diff --git a/app/index.html b/app/index.html index 151fda54cf20bcfc2454f26235c091622aa860fc..8d015ed4f58a3e39ef06935bd6d0347081c0d19b 100644 --- a/app/index.html +++ b/app/index.html @@ -1034,10 +1034,10 @@ Аврора, ул. Авроры 6/1, Уфа

- RemZona, Курская 14А, Ростов-на-Дону + RemZona, ул. Курская, 14А, Ростов-на-Дону

- PodrezGarage, Орбитальная 3Е, Ростов-на-Дону + PodrezGarage, ул. Орбитальная, 3Е, Ростов-на-Дону

На Колесах.ру, мкр. Северное Чертаново, ЮАО, 5, Москва @@ -1057,25 +1057,25 @@

- BMW Транстехсервис, пр. Салавата Юлаева 95, Уфа + BMW Транстехсервис, пр. Салавата Юлаева 95, Уфа

- Fit Service, Казахская улица, 60, Ростов-на-Дону + Fit Service, Казахская улица, 60, Ростов-на-Дону

Авантаж Стайл, ул. Вильнюсская, 5, Москва

- Механик-СПб,ул. Тёплый Стан, 15, стр. 1, Москва + Механик-СПб, ул. Благодатная, 63, Санкт-Петербург

- Техноцентр Гараж, ул. Благодатная, 63, Санкт-Петербург + Техноцентр Гараж, ул. Тёплый Стан, 15, стр. 1, Москва

- Астор, Витебский проспект, 17 + Астор, Витебский проспект, 17, корп. 10, Санкт-Петербург

- Zet-avto,ул. ул. Салова, 70, корп. 2, Санкт-Петербург + Zet-avto, ул. Салова, 70, корп. 2, Санкт-Петербург

@@ -1285,10 +1285,10 @@ Аврора, ул. Авроры 6/1, Уфа

- RemZona, Курская 14А, Ростов-на-Дону + RemZona, ул. Курская, 14А, Ростов-на-Дону

- PodrezGarage, Орбитальная 3Е, Ростов-на-Дону + PodrezGarage, ул. Орбитальная, 3Е, Ростов-на-Дону

На Колесах.ру, мкр. Северное Чертаново, ЮАО, 5, Москва @@ -1308,25 +1308,25 @@

- BMW Транстехсервис, пр. Салавата Юлаева 95, Уфа + BMW Транстехсервис, пр. Салавата Юлаева 95, Уфа

- Fit Service, Казахская улица, 60, Ростов-на-Дону + Fit Service, Казахская улица, 60, Ростов-на-Дону

Авантаж Стайл, ул. Вильнюсская, 5, Москва

- Механик-СПб,ул. Тёплый Стан, 15, стр. 1, Москва + Механик-СПб, ул. Благодатная, 63, Санкт-Петербург

- Техноцентр Гараж, ул. Благодатная, 63, Санкт-Петербург + Техноцентр Гараж, ул. Тёплый Стан, 15, стр. 1, Москва

- Астор, Витебский проспект, 17 + Астор, Витебский проспект, 17, корп. 10, Санкт-Петербург

- Zet-avto,ул. ул. Салова, 70, корп. 2, Санкт-Петербург + Zet-avto, ул. Салова, 70, корп. 2, Санкт-Петербург

diff --git a/app/js/main.js b/app/js/main.js index 3aa2fcbeddac6b8fa73fc17db21271def880120e..72a91f2b551861ce8bc80f0da7209adf9ca04e3f 100644 --- a/app/js/main.js +++ b/app/js/main.js @@ -20,10541 +20,8144 @@ const t=t=>"object"==typeof t&&null!==t&&t.constructor===Object&&"[object Object /***/ }), -/***/ "./node_modules/@videojs/vhs-utils/es/byte-helpers.js": -/*!************************************************************!*\ - !*** ./node_modules/@videojs/vhs-utils/es/byte-helpers.js ***! - \************************************************************/ +/***/ "./node_modules/@videojs/vhs-utils/es/decode-b64-to-uint8-array.js": +/*!*************************************************************************!*\ + !*** ./node_modules/@videojs/vhs-utils/es/decode-b64-to-uint8-array.js ***! + \*************************************************************************/ /***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { "use strict"; __webpack_require__.r(__webpack_exports__); /* harmony export */ __webpack_require__.d(__webpack_exports__, { -/* harmony export */ ENDIANNESS: () => (/* binding */ ENDIANNESS), -/* harmony export */ IS_BIG_ENDIAN: () => (/* binding */ IS_BIG_ENDIAN), -/* harmony export */ IS_LITTLE_ENDIAN: () => (/* binding */ IS_LITTLE_ENDIAN), -/* harmony export */ bytesMatch: () => (/* binding */ bytesMatch), -/* harmony export */ bytesToNumber: () => (/* binding */ bytesToNumber), -/* harmony export */ bytesToString: () => (/* binding */ bytesToString), -/* harmony export */ concatTypedArrays: () => (/* binding */ concatTypedArrays), -/* harmony export */ countBits: () => (/* binding */ countBits), -/* harmony export */ countBytes: () => (/* binding */ countBytes), -/* harmony export */ isArrayBufferView: () => (/* binding */ isArrayBufferView), -/* harmony export */ isTypedArray: () => (/* binding */ isTypedArray), -/* harmony export */ numberToBytes: () => (/* binding */ numberToBytes), -/* harmony export */ padStart: () => (/* binding */ padStart), -/* harmony export */ reverseBytes: () => (/* binding */ reverseBytes), -/* harmony export */ sliceBytes: () => (/* binding */ sliceBytes), -/* harmony export */ stringToBytes: () => (/* binding */ stringToBytes), -/* harmony export */ toBinaryString: () => (/* binding */ toBinaryString), -/* harmony export */ toHexString: () => (/* binding */ toHexString), -/* harmony export */ toUint8: () => (/* binding */ toUint8) +/* harmony export */ "default": () => (/* binding */ decodeB64ToUint8Array) /* harmony export */ }); /* harmony import */ var global_window__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! global/window */ "./node_modules/global/window.js"); /* harmony import */ var global_window__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(global_window__WEBPACK_IMPORTED_MODULE_0__); - // const log2 = Math.log2 ? Math.log2 : (x) => (Math.log(x) / Math.log(2)); - -var repeat = function repeat(str, len) { - var acc = ''; - - while (len--) { - acc += str; - } - return acc; -}; // count the number of bits it would take to represent a number -// we used to do this with log2 but BigInt does not support builtin math -// Math.ceil(log2(x)); +var atob = function atob(s) { + return (global_window__WEBPACK_IMPORTED_MODULE_0___default().atob) ? global_window__WEBPACK_IMPORTED_MODULE_0___default().atob(s) : Buffer.from(s, 'base64').toString('binary'); +}; -var countBits = function countBits(x) { - return x.toString(2).length; -}; // count the number of whole bytes it would take to represent a number +function decodeB64ToUint8Array(b64Text) { + var decodedString = atob(b64Text); + var array = new Uint8Array(decodedString.length); -var countBytes = function countBytes(x) { - return Math.ceil(countBits(x) / 8); -}; -var padStart = function padStart(b, len, str) { - if (str === void 0) { - str = ' '; + for (var i = 0; i < decodedString.length; i++) { + array[i] = decodedString.charCodeAt(i); } - return (repeat(str, len) + b.toString()).slice(-len); -}; -var isArrayBufferView = function isArrayBufferView(obj) { - if (ArrayBuffer.isView === 'function') { - return ArrayBuffer.isView(obj); - } + return array; +} - return obj && obj.buffer instanceof ArrayBuffer; -}; -var isTypedArray = function isTypedArray(obj) { - return isArrayBufferView(obj); -}; -var toUint8 = function toUint8(bytes) { - if (bytes instanceof Uint8Array) { - return bytes; - } +/***/ }), - if (!Array.isArray(bytes) && !isTypedArray(bytes) && !(bytes instanceof ArrayBuffer)) { - // any non-number or NaN leads to empty uint8array - // eslint-disable-next-line - if (typeof bytes !== 'number' || typeof bytes === 'number' && bytes !== bytes) { - bytes = 0; - } else { - bytes = [bytes]; - } - } +/***/ "./node_modules/@videojs/vhs-utils/es/media-groups.js": +/*!************************************************************!*\ + !*** ./node_modules/@videojs/vhs-utils/es/media-groups.js ***! + \************************************************************/ +/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { - return new Uint8Array(bytes && bytes.buffer || bytes, bytes && bytes.byteOffset || 0, bytes && bytes.byteLength || 0); +"use strict"; +__webpack_require__.r(__webpack_exports__); +/* harmony export */ __webpack_require__.d(__webpack_exports__, { +/* harmony export */ forEachMediaGroup: () => (/* binding */ forEachMediaGroup) +/* harmony export */ }); +/** + * Loops through all supported media groups in master and calls the provided + * callback for each group + * + * @param {Object} master + * The parsed master manifest object + * @param {string[]} groups + * The media groups to call the callback for + * @param {Function} callback + * Callback to call for each media group + */ +var forEachMediaGroup = function forEachMediaGroup(master, groups, callback) { + groups.forEach(function (mediaType) { + for (var groupKey in master.mediaGroups[mediaType]) { + for (var labelKey in master.mediaGroups[mediaType][groupKey]) { + var mediaProperties = master.mediaGroups[mediaType][groupKey][labelKey]; + callback(mediaProperties, mediaType, groupKey, labelKey); + } + } + }); }; -var toHexString = function toHexString(bytes) { - bytes = toUint8(bytes); - var str = ''; - for (var i = 0; i < bytes.length; i++) { - str += padStart(bytes[i].toString(16), 2, '0'); - } +/***/ }), - return str; -}; -var toBinaryString = function toBinaryString(bytes) { - bytes = toUint8(bytes); - var str = ''; +/***/ "./node_modules/@videojs/vhs-utils/es/resolve-url.js": +/*!***********************************************************!*\ + !*** ./node_modules/@videojs/vhs-utils/es/resolve-url.js ***! + \***********************************************************/ +/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { - for (var i = 0; i < bytes.length; i++) { - str += padStart(bytes[i].toString(2), 8, '0'); - } +"use strict"; +__webpack_require__.r(__webpack_exports__); +/* harmony export */ __webpack_require__.d(__webpack_exports__, { +/* harmony export */ "default": () => (__WEBPACK_DEFAULT_EXPORT__) +/* harmony export */ }); +/* harmony import */ var url_toolkit__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! url-toolkit */ "./node_modules/url-toolkit/src/url-toolkit.js"); +/* harmony import */ var url_toolkit__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(url_toolkit__WEBPACK_IMPORTED_MODULE_0__); +/* harmony import */ var global_window__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! global/window */ "./node_modules/global/window.js"); +/* harmony import */ var global_window__WEBPACK_IMPORTED_MODULE_1___default = /*#__PURE__*/__webpack_require__.n(global_window__WEBPACK_IMPORTED_MODULE_1__); - return str; -}; -var BigInt = (global_window__WEBPACK_IMPORTED_MODULE_0___default().BigInt) || Number; -var BYTE_TABLE = [BigInt('0x1'), BigInt('0x100'), BigInt('0x10000'), BigInt('0x1000000'), BigInt('0x100000000'), BigInt('0x10000000000'), BigInt('0x1000000000000'), BigInt('0x100000000000000'), BigInt('0x10000000000000000')]; -var ENDIANNESS = function () { - var a = new Uint16Array([0xFFCC]); - var b = new Uint8Array(a.buffer, a.byteOffset, a.byteLength); - if (b[0] === 0xFF) { - return 'big'; - } +var DEFAULT_LOCATION = 'http://example.com'; - if (b[0] === 0xCC) { - return 'little'; - } +var resolveUrl = function resolveUrl(baseUrl, relativeUrl) { + // return early if we don't need to resolve + if (/^[a-z]+:/i.test(relativeUrl)) { + return relativeUrl; + } // if baseUrl is a data URI, ignore it and resolve everything relative to window.location - return 'unknown'; -}(); -var IS_BIG_ENDIAN = ENDIANNESS === 'big'; -var IS_LITTLE_ENDIAN = ENDIANNESS === 'little'; -var bytesToNumber = function bytesToNumber(bytes, _temp) { - var _ref = _temp === void 0 ? {} : _temp, - _ref$signed = _ref.signed, - signed = _ref$signed === void 0 ? false : _ref$signed, - _ref$le = _ref.le, - le = _ref$le === void 0 ? false : _ref$le; - bytes = toUint8(bytes); - var fn = le ? 'reduce' : 'reduceRight'; - var obj = bytes[fn] ? bytes[fn] : Array.prototype[fn]; - var number = obj.call(bytes, function (total, byte, i) { - var exponent = le ? i : Math.abs(i + 1 - bytes.length); - return total + BigInt(byte) * BYTE_TABLE[exponent]; - }, BigInt(0)); + if (/^data:/.test(baseUrl)) { + baseUrl = (global_window__WEBPACK_IMPORTED_MODULE_1___default().location) && (global_window__WEBPACK_IMPORTED_MODULE_1___default().location).href || ''; + } // IE11 supports URL but not the URL constructor + // feature detect the behavior we want - if (signed) { - var max = BYTE_TABLE[bytes.length] / BigInt(2) - BigInt(1); - number = BigInt(number); - if (number > max) { - number -= max; - number -= max; - number -= BigInt(2); - } - } + var nativeURL = typeof (global_window__WEBPACK_IMPORTED_MODULE_1___default().URL) === 'function'; + var protocolLess = /^\/\//.test(baseUrl); // remove location if window.location isn't available (i.e. we're in node) + // and if baseUrl isn't an absolute url - return Number(number); -}; -var numberToBytes = function numberToBytes(number, _temp2) { - var _ref2 = _temp2 === void 0 ? {} : _temp2, - _ref2$le = _ref2.le, - le = _ref2$le === void 0 ? false : _ref2$le; + var removeLocation = !(global_window__WEBPACK_IMPORTED_MODULE_1___default().location) && !/\/\//i.test(baseUrl); // if the base URL is relative then combine with the current location - // eslint-disable-next-line - if (typeof number !== 'bigint' && typeof number !== 'number' || typeof number === 'number' && number !== number) { - number = 0; + if (nativeURL) { + baseUrl = new (global_window__WEBPACK_IMPORTED_MODULE_1___default().URL)(baseUrl, (global_window__WEBPACK_IMPORTED_MODULE_1___default().location) || DEFAULT_LOCATION); + } else if (!/\/\//i.test(baseUrl)) { + baseUrl = url_toolkit__WEBPACK_IMPORTED_MODULE_0___default().buildAbsoluteURL((global_window__WEBPACK_IMPORTED_MODULE_1___default().location) && (global_window__WEBPACK_IMPORTED_MODULE_1___default().location).href || '', baseUrl); } - number = BigInt(number); - var byteCount = countBytes(number); - var bytes = new Uint8Array(new ArrayBuffer(byteCount)); - - for (var i = 0; i < byteCount; i++) { - var byteIndex = le ? i : Math.abs(i + 1 - bytes.length); - bytes[byteIndex] = Number(number / BYTE_TABLE[i] & BigInt(0xFF)); + if (nativeURL) { + var newUrl = new URL(relativeUrl, baseUrl); // if we're a protocol-less url, remove the protocol + // and if we're location-less, remove the location + // otherwise, return the url unmodified - if (number < 0) { - bytes[byteIndex] = Math.abs(~bytes[byteIndex]); - bytes[byteIndex] -= i === 0 ? 1 : 2; + if (removeLocation) { + return newUrl.href.slice(DEFAULT_LOCATION.length); + } else if (protocolLess) { + return newUrl.href.slice(newUrl.protocol.length); } + + return newUrl.href; } - return bytes; + return url_toolkit__WEBPACK_IMPORTED_MODULE_0___default().buildAbsoluteURL(baseUrl, relativeUrl); }; -var bytesToString = function bytesToString(bytes) { - if (!bytes) { - return ''; - } // TODO: should toUint8 handle cases where we only have 8 bytes - // but report more since this is a Uint16+ Array? +/* harmony default export */ const __WEBPACK_DEFAULT_EXPORT__ = (resolveUrl); - bytes = Array.prototype.slice.call(bytes); - var string = String.fromCharCode.apply(null, toUint8(bytes)); +/***/ }), - try { - return decodeURIComponent(escape(string)); - } catch (e) {// if decodeURIComponent/escape fails, we are dealing with partial - // or full non string data. Just return the potentially garbled string. - } +/***/ "./node_modules/@videojs/vhs-utils/es/stream.js": +/*!******************************************************!*\ + !*** ./node_modules/@videojs/vhs-utils/es/stream.js ***! + \******************************************************/ +/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { - return string; -}; -var stringToBytes = function stringToBytes(string, stringIsBytes) { - if (typeof string !== 'string' && string && typeof string.toString === 'function') { - string = string.toString(); +"use strict"; +__webpack_require__.r(__webpack_exports__); +/* harmony export */ __webpack_require__.d(__webpack_exports__, { +/* harmony export */ "default": () => (/* binding */ Stream) +/* harmony export */ }); +/** + * @file stream.js + */ + +/** + * A lightweight readable stream implemention that handles event dispatching. + * + * @class Stream + */ +var Stream = /*#__PURE__*/function () { + function Stream() { + this.listeners = {}; } + /** + * Add a listener for a specified event type. + * + * @param {string} type the event name + * @param {Function} listener the callback to be invoked when an event of + * the specified type occurs + */ - if (typeof string !== 'string') { - return new Uint8Array(); - } // If the string already is bytes, we don't have to do this - // otherwise we do this so that we split multi length characters - // into individual bytes + var _proto = Stream.prototype; - if (!stringIsBytes) { - string = unescape(encodeURIComponent(string)); + _proto.on = function on(type, listener) { + if (!this.listeners[type]) { + this.listeners[type] = []; + } + + this.listeners[type].push(listener); } + /** + * Remove a listener for a specified event type. + * + * @param {string} type the event name + * @param {Function} listener a function previously registered for this + * type of event through `on` + * @return {boolean} if we could turn it off or not + */ + ; - var view = new Uint8Array(string.length); + _proto.off = function off(type, listener) { + if (!this.listeners[type]) { + return false; + } - for (var i = 0; i < string.length; i++) { - view[i] = string.charCodeAt(i); - } + var index = this.listeners[type].indexOf(listener); // TODO: which is better? + // In Video.js we slice listener functions + // on trigger so that it does not mess up the order + // while we loop through. + // + // Here we slice on off so that the loop in trigger + // can continue using it's old reference to loop without + // messing up the order. - return view; -}; -var concatTypedArrays = function concatTypedArrays() { - for (var _len = arguments.length, buffers = new Array(_len), _key = 0; _key < _len; _key++) { - buffers[_key] = arguments[_key]; + this.listeners[type] = this.listeners[type].slice(0); + this.listeners[type].splice(index, 1); + return index > -1; } + /** + * Trigger an event of the specified type on this stream. Any additional + * arguments to this function are passed as parameters to event listeners. + * + * @param {string} type the event name + */ + ; - buffers = buffers.filter(function (b) { - return b && (b.byteLength || b.length) && typeof b !== 'string'; - }); + _proto.trigger = function trigger(type) { + var callbacks = this.listeners[type]; - if (buffers.length <= 1) { - // for 0 length we will return empty uint8 - // for 1 length we return the first uint8 - return toUint8(buffers[0]); - } + if (!callbacks) { + return; + } // Slicing the arguments on every invocation of this method + // can add a significant amount of overhead. Avoid the + // intermediate object creation for the common case of a + // single callback argument - var totalLen = buffers.reduce(function (total, buf, i) { - return total + (buf.byteLength || buf.length); - }, 0); - var tempBuffer = new Uint8Array(totalLen); - var offset = 0; - buffers.forEach(function (buf) { - buf = toUint8(buf); - tempBuffer.set(buf, offset); - offset += buf.byteLength; - }); - return tempBuffer; -}; -/** - * Check if the bytes "b" are contained within bytes "a". - * - * @param {Uint8Array|Array} a - * Bytes to check in - * - * @param {Uint8Array|Array} b - * Bytes to check for - * - * @param {Object} options - * options - * - * @param {Array|Uint8Array} [offset=0] - * offset to use when looking at bytes in a - * - * @param {Array|Uint8Array} [mask=[]] - * mask to use on bytes before comparison. - * - * @return {boolean} - * If all bytes in b are inside of a, taking into account - * bit masks. - */ -var bytesMatch = function bytesMatch(a, b, _temp3) { - var _ref3 = _temp3 === void 0 ? {} : _temp3, - _ref3$offset = _ref3.offset, - offset = _ref3$offset === void 0 ? 0 : _ref3$offset, - _ref3$mask = _ref3.mask, - mask = _ref3$mask === void 0 ? [] : _ref3$mask; + if (arguments.length === 2) { + var length = callbacks.length; - a = toUint8(a); - b = toUint8(b); // ie 11 does not support uint8 every + for (var i = 0; i < length; ++i) { + callbacks[i].call(this, arguments[1]); + } + } else { + var args = Array.prototype.slice.call(arguments, 1); + var _length = callbacks.length; - var fn = b.every ? b.every : Array.prototype.every; - return b.length && a.length - offset >= b.length && // ie 11 doesn't support every on uin8 - fn.call(b, function (bByte, i) { - var aByte = mask[i] ? mask[i] & a[offset + i] : a[offset + i]; - return bByte === aByte; - }); -}; -var sliceBytes = function sliceBytes(src, start, end) { - if (Uint8Array.prototype.slice) { - return Uint8Array.prototype.slice.call(src, start, end); + for (var _i = 0; _i < _length; ++_i) { + callbacks[_i].apply(this, args); + } + } } + /** + * Destroys the stream and cleans up. + */ + ; - return new Uint8Array(Array.prototype.slice.call(src, start, end)); -}; -var reverseBytes = function reverseBytes(src) { - if (src.reverse) { - return src.reverse(); + _proto.dispose = function dispose() { + this.listeners = {}; } + /** + * Forwards all `data` events on this stream to the destination stream. The + * destination stream should provide a method `push` to receive the data + * events as they arrive. + * + * @param {Stream} destination the stream that will receive all `data` events + * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options + */ + ; + + _proto.pipe = function pipe(destination) { + this.on('data', function (data) { + destination.push(data); + }); + }; + + return Stream; +}(); + - return Array.prototype.reverse.call(src); -}; /***/ }), -/***/ "./node_modules/@videojs/vhs-utils/es/codec-helpers.js": -/*!*************************************************************!*\ - !*** ./node_modules/@videojs/vhs-utils/es/codec-helpers.js ***! - \*************************************************************/ -/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { +/***/ "./node_modules/@videojs/xhr/lib/http-handler.js": +/*!*******************************************************!*\ + !*** ./node_modules/@videojs/xhr/lib/http-handler.js ***! + \*******************************************************/ +/***/ ((module, __unused_webpack_exports, __webpack_require__) => { "use strict"; -__webpack_require__.r(__webpack_exports__); -/* harmony export */ __webpack_require__.d(__webpack_exports__, { -/* harmony export */ getAv1Codec: () => (/* binding */ getAv1Codec), -/* harmony export */ getAvcCodec: () => (/* binding */ getAvcCodec), -/* harmony export */ getHvcCodec: () => (/* binding */ getHvcCodec) -/* harmony export */ }); -/* harmony import */ var _byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./byte-helpers.js */ "./node_modules/@videojs/vhs-utils/es/byte-helpers.js"); - // https://aomediacodec.github.io/av1-isobmff/#av1codecconfigurationbox-syntax -// https://developer.mozilla.org/en-US/docs/Web/Media/Formats/codecs_parameter#AV1 -var getAv1Codec = function getAv1Codec(bytes) { - var codec = ''; - var profile = bytes[1] >>> 3; - var level = bytes[1] & 0x1F; - var tier = bytes[2] >>> 7; - var highBitDepth = (bytes[2] & 0x40) >> 6; - var twelveBit = (bytes[2] & 0x20) >> 5; - var monochrome = (bytes[2] & 0x10) >> 4; - var chromaSubsamplingX = (bytes[2] & 0x08) >> 3; - var chromaSubsamplingY = (bytes[2] & 0x04) >> 2; - var chromaSamplePosition = bytes[2] & 0x03; - codec += profile + "." + (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.padStart)(level, 2, '0'); - if (tier === 0) { - codec += 'M'; - } else if (tier === 1) { - codec += 'H'; +var window = __webpack_require__(/*! global/window */ "./node_modules/global/window.js"); + +var httpResponseHandler = function httpResponseHandler(callback, decodeResponseBody) { + if (decodeResponseBody === void 0) { + decodeResponseBody = false; } - var bitDepth; + return function (err, response, responseBody) { + // if the XHR failed, return that error + if (err) { + callback(err); + return; + } // if the HTTP status code is 4xx or 5xx, the request also failed - if (profile === 2 && highBitDepth) { - bitDepth = twelveBit ? 12 : 10; - } else { - bitDepth = highBitDepth ? 10 : 8; - } - codec += "." + (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.padStart)(bitDepth, 2, '0'); // TODO: can we parse color range?? + if (response.statusCode >= 400 && response.statusCode <= 599) { + var cause = responseBody; - codec += "." + monochrome; - codec += "." + chromaSubsamplingX + chromaSubsamplingY + chromaSamplePosition; - return codec; -}; -var getAvcCodec = function getAvcCodec(bytes) { - var profileId = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toHexString)(bytes[1]); - var constraintFlags = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toHexString)(bytes[2] & 0xFC); - var levelId = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toHexString)(bytes[3]); - return "" + profileId + constraintFlags + levelId; -}; -var getHvcCodec = function getHvcCodec(bytes) { - var codec = ''; - var profileSpace = bytes[1] >> 6; - var profileId = bytes[1] & 0x1F; - var tierFlag = (bytes[1] & 0x20) >> 5; - var profileCompat = bytes.subarray(2, 6); - var constraintIds = bytes.subarray(6, 12); - var levelId = bytes[12]; + if (decodeResponseBody) { + if (window.TextDecoder) { + var charset = getCharset(response.headers && response.headers['content-type']); - if (profileSpace === 1) { - codec += 'A'; - } else if (profileSpace === 2) { - codec += 'B'; - } else if (profileSpace === 3) { - codec += 'C'; - } - - codec += profileId + "."; // ffmpeg does this in big endian + try { + cause = new TextDecoder(charset).decode(responseBody); + } catch (e) {} + } else { + cause = String.fromCharCode.apply(null, new Uint8Array(responseBody)); + } + } - var profileCompatVal = parseInt((0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toBinaryString)(profileCompat).split('').reverse().join(''), 2); // apple does this in little endian... + callback({ + cause: cause + }); + return; + } // otherwise, request succeeded - if (profileCompatVal > 255) { - profileCompatVal = parseInt((0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toBinaryString)(profileCompat), 2); - } - codec += profileCompatVal.toString(16) + "."; + callback(null, responseBody); + }; +}; - if (tierFlag === 0) { - codec += 'L'; - } else { - codec += 'H'; +function getCharset(contentTypeHeader) { + if (contentTypeHeader === void 0) { + contentTypeHeader = ''; } - codec += levelId; - var constraints = ''; - - for (var i = 0; i < constraintIds.length; i++) { - var v = constraintIds[i]; - - if (v) { - if (constraints) { - constraints += '.'; - } + return contentTypeHeader.toLowerCase().split(';').reduce(function (charset, contentType) { + var _contentType$split = contentType.split('='), + type = _contentType$split[0], + value = _contentType$split[1]; - constraints += v.toString(16); + if (type.trim() === 'charset') { + return value.trim(); } - } - if (constraints) { - codec += "." + constraints; - } + return charset; + }, 'utf-8'); +} - return codec; -}; +module.exports = httpResponseHandler; /***/ }), -/***/ "./node_modules/@videojs/vhs-utils/es/codecs.js": -/*!******************************************************!*\ - !*** ./node_modules/@videojs/vhs-utils/es/codecs.js ***! - \******************************************************/ -/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { +/***/ "./node_modules/@videojs/xhr/lib/index.js": +/*!************************************************!*\ + !*** ./node_modules/@videojs/xhr/lib/index.js ***! + \************************************************/ +/***/ ((module, __unused_webpack_exports, __webpack_require__) => { "use strict"; -__webpack_require__.r(__webpack_exports__); -/* harmony export */ __webpack_require__.d(__webpack_exports__, { -/* harmony export */ DEFAULT_AUDIO_CODEC: () => (/* binding */ DEFAULT_AUDIO_CODEC), -/* harmony export */ DEFAULT_VIDEO_CODEC: () => (/* binding */ DEFAULT_VIDEO_CODEC), -/* harmony export */ browserSupportsCodec: () => (/* binding */ browserSupportsCodec), -/* harmony export */ codecsFromDefault: () => (/* binding */ codecsFromDefault), -/* harmony export */ getMimeForCodec: () => (/* binding */ getMimeForCodec), -/* harmony export */ isAudioCodec: () => (/* binding */ isAudioCodec), -/* harmony export */ isTextCodec: () => (/* binding */ isTextCodec), -/* harmony export */ isVideoCodec: () => (/* binding */ isVideoCodec), -/* harmony export */ mapLegacyAvcCodecs: () => (/* binding */ mapLegacyAvcCodecs), -/* harmony export */ muxerSupportsCodec: () => (/* binding */ muxerSupportsCodec), -/* harmony export */ parseCodecs: () => (/* binding */ parseCodecs), -/* harmony export */ translateLegacyCodec: () => (/* binding */ translateLegacyCodec), -/* harmony export */ translateLegacyCodecs: () => (/* binding */ translateLegacyCodecs) -/* harmony export */ }); -/* harmony import */ var global_window__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! global/window */ "./node_modules/global/window.js"); -/* harmony import */ var global_window__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(global_window__WEBPACK_IMPORTED_MODULE_0__); -var regexs = { - // to determine mime types - mp4: /^(av0?1|avc0?[1234]|vp0?9|flac|opus|mp3|mp4a|mp4v|stpp.ttml.im1t)/, - webm: /^(vp0?[89]|av0?1|opus|vorbis)/, - ogg: /^(vp0?[89]|theora|flac|opus|vorbis)/, - // to determine if a codec is audio or video - video: /^(av0?1|avc0?[1234]|vp0?[89]|hvc1|hev1|theora|mp4v)/, - audio: /^(mp4a|flac|vorbis|opus|ac-[34]|ec-3|alac|mp3|speex|aac)/, - text: /^(stpp.ttml.im1t)/, - // mux.js support regex - muxerVideo: /^(avc0?1)/, - muxerAudio: /^(mp4a)/, - // match nothing as muxer does not support text right now. - // there cannot never be a character before the start of a string - // so this matches nothing. - muxerText: /a^/ -}; -var mediaTypes = ['video', 'audio', 'text']; -var upperMediaTypes = ['Video', 'Audio', 'Text']; + +var window = __webpack_require__(/*! global/window */ "./node_modules/global/window.js"); + +var _extends = __webpack_require__(/*! @babel/runtime/helpers/extends */ "./node_modules/@babel/runtime/helpers/extends.js"); + +var isFunction = __webpack_require__(/*! is-function */ "./node_modules/is-function/index.js"); + +createXHR.httpHandler = __webpack_require__(/*! ./http-handler.js */ "./node_modules/@videojs/xhr/lib/http-handler.js"); /** - * Replace the old apple-style `avc1.
.
` codec string with the standard - * `avc1.` - * - * @param {string} codec - * Codec string to translate - * @return {string} - * The translated codec string + * @license + * slighly modified parse-headers 2.0.2 + * Copyright (c) 2014 David Björklund + * Available under the MIT license + * */ -var translateLegacyCodec = function translateLegacyCodec(codec) { - if (!codec) { - return codec; +var parseHeaders = function parseHeaders(headers) { + var result = {}; + + if (!headers) { + return result; } - return codec.replace(/avc1\.(\d+)\.(\d+)/i, function (orig, profile, avcLevel) { - var profileHex = ('00' + Number(profile).toString(16)).slice(-2); - var avcLevelHex = ('00' + Number(avcLevel).toString(16)).slice(-2); - return 'avc1.' + profileHex + '00' + avcLevelHex; + headers.trim().split('\n').forEach(function (row) { + var index = row.indexOf(':'); + var key = row.slice(0, index).trim().toLowerCase(); + var value = row.slice(index + 1).trim(); + + if (typeof result[key] === 'undefined') { + result[key] = value; + } else if (Array.isArray(result[key])) { + result[key].push(value); + } else { + result[key] = [result[key], value]; + } }); + return result; }; -/** - * Replace the old apple-style `avc1.
.
` codec strings with the standard - * `avc1.` - * - * @param {string[]} codecs - * An array of codec strings to translate - * @return {string[]} - * The translated array of codec strings - */ -var translateLegacyCodecs = function translateLegacyCodecs(codecs) { - return codecs.map(translateLegacyCodec); -}; -/** - * Replace codecs in the codec string with the old apple-style `avc1.
.
` to the - * standard `avc1.`. - * - * @param {string} codecString - * The codec string - * @return {string} - * The codec string with old apple-style codecs replaced - * - * @private - */ +module.exports = createXHR; // Allow use of default import syntax in TypeScript -var mapLegacyAvcCodecs = function mapLegacyAvcCodecs(codecString) { - return codecString.replace(/avc1\.(\d+)\.(\d+)/i, function (match) { - return translateLegacyCodecs([match])[0]; - }); -}; -/** - * @typedef {Object} ParsedCodecInfo - * @property {number} codecCount - * Number of codecs parsed - * @property {string} [videoCodec] - * Parsed video codec (if found) - * @property {string} [videoObjectTypeIndicator] - * Video object type indicator (if found) - * @property {string|null} audioProfile - * Audio profile - */ +module.exports["default"] = createXHR; +createXHR.XMLHttpRequest = window.XMLHttpRequest || noop; +createXHR.XDomainRequest = "withCredentials" in new createXHR.XMLHttpRequest() ? createXHR.XMLHttpRequest : window.XDomainRequest; +forEachArray(["get", "put", "post", "patch", "head", "delete"], function (method) { + createXHR[method === "delete" ? "del" : method] = function (uri, options, callback) { + options = initParams(uri, options, callback); + options.method = method.toUpperCase(); + return _createXHR(options); + }; +}); -/** - * Parses a codec string to retrieve the number of codecs specified, the video codec and - * object type indicator, and the audio profile. - * - * @param {string} [codecString] - * The codec string to parse - * @return {ParsedCodecInfo} - * Parsed codec info - */ +function forEachArray(array, iterator) { + for (var i = 0; i < array.length; i++) { + iterator(array[i]); + } +} -var parseCodecs = function parseCodecs(codecString) { - if (codecString === void 0) { - codecString = ''; +function isEmpty(obj) { + for (var i in obj) { + if (obj.hasOwnProperty(i)) return false; } - var codecs = codecString.split(','); - var result = []; - codecs.forEach(function (codec) { - codec = codec.trim(); - var codecType; - mediaTypes.forEach(function (name) { - var match = regexs[name].exec(codec.toLowerCase()); + return true; +} - if (!match || match.length <= 1) { - return; - } +function initParams(uri, options, callback) { + var params = uri; - codecType = name; // maintain codec case + if (isFunction(options)) { + callback = options; - var type = codec.substring(0, match[1].length); - var details = codec.replace(type, ''); - result.push({ - type: type, - details: details, - mediaType: name - }); + if (typeof uri === "string") { + params = { + uri: uri + }; + } + } else { + params = _extends({}, options, { + uri: uri }); + } - if (!codecType) { - result.push({ - type: codec, - details: '', - mediaType: 'unknown' - }); - } - }); - return result; -}; -/** - * Returns a ParsedCodecInfo object for the default alternate audio playlist if there is - * a default alternate audio playlist for the provided audio group. - * - * @param {Object} master - * The master playlist - * @param {string} audioGroupId - * ID of the audio group for which to find the default codec info - * @return {ParsedCodecInfo} - * Parsed codec info - */ + params.callback = callback; + return params; +} -var codecsFromDefault = function codecsFromDefault(master, audioGroupId) { - if (!master.mediaGroups.AUDIO || !audioGroupId) { - return null; +function createXHR(uri, options, callback) { + options = initParams(uri, options, callback); + return _createXHR(options); +} + +function _createXHR(options) { + if (typeof options.callback === "undefined") { + throw new Error("callback argument missing"); } - var audioGroup = master.mediaGroups.AUDIO[audioGroupId]; + var called = false; - if (!audioGroup) { - return null; + var callback = function cbOnce(err, response, body) { + if (!called) { + called = true; + options.callback(err, response, body); + } + }; + + function readystatechange() { + if (xhr.readyState === 4) { + setTimeout(loadFunc, 0); + } } - for (var name in audioGroup) { - var audioType = audioGroup[name]; + function getBody() { + // Chrome with requestType=blob throws errors arround when even testing access to responseText + var body = undefined; - if (audioType.default && audioType.playlists) { - // codec should be the same for all playlists within the audio type - return parseCodecs(audioType.playlists[0].attributes.CODECS); + if (xhr.response) { + body = xhr.response; + } else { + body = xhr.responseText || getXml(xhr); } - } - return null; -}; -var isVideoCodec = function isVideoCodec(codec) { - if (codec === void 0) { - codec = ''; - } + if (isJson) { + try { + body = JSON.parse(body); + } catch (e) {} + } - return regexs.video.test(codec.trim().toLowerCase()); -}; -var isAudioCodec = function isAudioCodec(codec) { - if (codec === void 0) { - codec = ''; + return body; } - return regexs.audio.test(codec.trim().toLowerCase()); -}; -var isTextCodec = function isTextCodec(codec) { - if (codec === void 0) { - codec = ''; - } + function errorFunc(evt) { + clearTimeout(timeoutTimer); - return regexs.text.test(codec.trim().toLowerCase()); -}; -var getMimeForCodec = function getMimeForCodec(codecString) { - if (!codecString || typeof codecString !== 'string') { - return; - } + if (!(evt instanceof Error)) { + evt = new Error("" + (evt || "Unknown XMLHttpRequest Error")); + } - var codecs = codecString.toLowerCase().split(',').map(function (c) { - return translateLegacyCodec(c.trim()); - }); // default to video type + evt.statusCode = 0; + return callback(evt, failureResponse); + } // will load the data & process the response in a special response object - var type = 'video'; // only change to audio type if the only codec we have is - // audio - if (codecs.length === 1 && isAudioCodec(codecs[0])) { - type = 'audio'; - } else if (codecs.length === 1 && isTextCodec(codecs[0])) { - // text uses application/ for now - type = 'application'; - } // default the container to mp4 + function loadFunc() { + if (aborted) return; + var status; + clearTimeout(timeoutTimer); + if (options.useXDR && xhr.status === undefined) { + //IE8 CORS GET successful response doesn't have a status field, but body is fine + status = 200; + } else { + status = xhr.status === 1223 ? 204 : xhr.status; + } - var container = 'mp4'; // every codec must be able to go into the container - // for that container to be the correct one + var response = failureResponse; + var err = null; - if (codecs.every(function (c) { - return regexs.mp4.test(c); - })) { - container = 'mp4'; - } else if (codecs.every(function (c) { - return regexs.webm.test(c); - })) { - container = 'webm'; - } else if (codecs.every(function (c) { - return regexs.ogg.test(c); - })) { - container = 'ogg'; - } + if (status !== 0) { + response = { + body: getBody(), + statusCode: status, + method: method, + headers: {}, + url: uri, + rawRequest: xhr + }; - return type + "/" + container + ";codecs=\"" + codecString + "\""; -}; -var browserSupportsCodec = function browserSupportsCodec(codecString) { - if (codecString === void 0) { - codecString = ''; + if (xhr.getAllResponseHeaders) { + //remember xhr can in fact be XDR for CORS in IE + response.headers = parseHeaders(xhr.getAllResponseHeaders()); + } + } else { + err = new Error("Internal XMLHttpRequest Error"); + } + + return callback(err, response, response.body); } - return (global_window__WEBPACK_IMPORTED_MODULE_0___default().MediaSource) && (global_window__WEBPACK_IMPORTED_MODULE_0___default().MediaSource).isTypeSupported && global_window__WEBPACK_IMPORTED_MODULE_0___default().MediaSource.isTypeSupported(getMimeForCodec(codecString)) || false; -}; -var muxerSupportsCodec = function muxerSupportsCodec(codecString) { - if (codecString === void 0) { - codecString = ''; + var xhr = options.xhr || null; + + if (!xhr) { + if (options.cors || options.useXDR) { + xhr = new createXHR.XDomainRequest(); + } else { + xhr = new createXHR.XMLHttpRequest(); + } } - return codecString.toLowerCase().split(',').every(function (codec) { - codec = codec.trim(); // any match is supported. + var key; + var aborted; + var uri = xhr.url = options.uri || options.url; + var method = xhr.method = options.method || "GET"; + var body = options.body || options.data; + var headers = xhr.headers = options.headers || {}; + var sync = !!options.sync; + var isJson = false; + var timeoutTimer; + var failureResponse = { + body: undefined, + headers: {}, + statusCode: 0, + method: method, + url: uri, + rawRequest: xhr + }; - for (var i = 0; i < upperMediaTypes.length; i++) { - var type = upperMediaTypes[i]; + if ("json" in options && options.json !== false) { + isJson = true; + headers["accept"] || headers["Accept"] || (headers["Accept"] = "application/json"); //Don't override existing accept header declared by user - if (regexs["muxer" + type].test(codec)) { - return true; - } + if (method !== "GET" && method !== "HEAD") { + headers["content-type"] || headers["Content-Type"] || (headers["Content-Type"] = "application/json"); //Don't override existing accept header declared by user + + body = JSON.stringify(options.json === true ? body : options.json); } + } - return false; - }); -}; -var DEFAULT_AUDIO_CODEC = 'mp4a.40.2'; -var DEFAULT_VIDEO_CODEC = 'avc1.4d400d'; + xhr.onreadystatechange = readystatechange; + xhr.onload = loadFunc; + xhr.onerror = errorFunc; // IE9 must have onprogress be set to a unique function. -/***/ }), + xhr.onprogress = function () {// IE must die + }; -/***/ "./node_modules/@videojs/vhs-utils/es/containers.js": -/*!**********************************************************!*\ - !*** ./node_modules/@videojs/vhs-utils/es/containers.js ***! - \**********************************************************/ -/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { + xhr.onabort = function () { + aborted = true; + }; -"use strict"; -__webpack_require__.r(__webpack_exports__); -/* harmony export */ __webpack_require__.d(__webpack_exports__, { -/* harmony export */ detectContainerForBytes: () => (/* binding */ detectContainerForBytes), -/* harmony export */ isLikely: () => (/* binding */ isLikely), -/* harmony export */ isLikelyFmp4MediaSegment: () => (/* binding */ isLikelyFmp4MediaSegment) -/* harmony export */ }); -/* harmony import */ var _byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./byte-helpers.js */ "./node_modules/@videojs/vhs-utils/es/byte-helpers.js"); -/* harmony import */ var _mp4_helpers_js__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./mp4-helpers.js */ "./node_modules/@videojs/vhs-utils/es/mp4-helpers.js"); -/* harmony import */ var _ebml_helpers_js__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ./ebml-helpers.js */ "./node_modules/@videojs/vhs-utils/es/ebml-helpers.js"); -/* harmony import */ var _id3_helpers_js__WEBPACK_IMPORTED_MODULE_3__ = __webpack_require__(/*! ./id3-helpers.js */ "./node_modules/@videojs/vhs-utils/es/id3-helpers.js"); -/* harmony import */ var _nal_helpers_js__WEBPACK_IMPORTED_MODULE_4__ = __webpack_require__(/*! ./nal-helpers.js */ "./node_modules/@videojs/vhs-utils/es/nal-helpers.js"); + xhr.ontimeout = errorFunc; + xhr.open(method, uri, !sync, options.username, options.password); //has to be after open + if (!sync) { + xhr.withCredentials = !!options.withCredentials; + } // Cannot set timeout with sync request + // not setting timeout on the xhr object, because of old webkits etc. not handling that correctly + // both npm's request and jquery 1.x use this kind of timeout, so this is being consistent + if (!sync && options.timeout > 0) { + timeoutTimer = setTimeout(function () { + if (aborted) return; + aborted = true; //IE9 may still call readystatechange + xhr.abort("timeout"); + var e = new Error("XMLHttpRequest timeout"); + e.code = "ETIMEDOUT"; + errorFunc(e); + }, options.timeout); + } -var CONSTANTS = { - // "webm" string literal in hex - 'webm': (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x77, 0x65, 0x62, 0x6d]), - // "matroska" string literal in hex - 'matroska': (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x6d, 0x61, 0x74, 0x72, 0x6f, 0x73, 0x6b, 0x61]), - // "fLaC" string literal in hex - 'flac': (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x66, 0x4c, 0x61, 0x43]), - // "OggS" string literal in hex - 'ogg': (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x4f, 0x67, 0x67, 0x53]), - // ac-3 sync byte, also works for ec-3 as that is simply a codec - // of ac-3 - 'ac3': (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x0b, 0x77]), - // "RIFF" string literal in hex used for wav and avi - 'riff': (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x52, 0x49, 0x46, 0x46]), - // "AVI" string literal in hex - 'avi': (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x41, 0x56, 0x49]), - // "WAVE" string literal in hex - 'wav': (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x57, 0x41, 0x56, 0x45]), - // "ftyp3g" string literal in hex - '3gp': (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x66, 0x74, 0x79, 0x70, 0x33, 0x67]), - // "ftyp" string literal in hex - 'mp4': (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x66, 0x74, 0x79, 0x70]), - // "styp" string literal in hex - 'fmp4': (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x73, 0x74, 0x79, 0x70]), - // "ftypqt" string literal in hex - 'mov': (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x66, 0x74, 0x79, 0x70, 0x71, 0x74]), - // moov string literal in hex - 'moov': (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x6D, 0x6F, 0x6F, 0x76]), - // moof string literal in hex - 'moof': (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x6D, 0x6F, 0x6F, 0x66]) -}; -var _isLikely = { - aac: function aac(bytes) { - var offset = (0,_id3_helpers_js__WEBPACK_IMPORTED_MODULE_3__.getId3Offset)(bytes); - return (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, [0xFF, 0x10], { - offset: offset, - mask: [0xFF, 0x16] - }); - }, - mp3: function mp3(bytes) { - var offset = (0,_id3_helpers_js__WEBPACK_IMPORTED_MODULE_3__.getId3Offset)(bytes); - return (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, [0xFF, 0x02], { - offset: offset, - mask: [0xFF, 0x06] - }); - }, - webm: function webm(bytes) { - var docType = (0,_ebml_helpers_js__WEBPACK_IMPORTED_MODULE_2__.findEbml)(bytes, [_ebml_helpers_js__WEBPACK_IMPORTED_MODULE_2__.EBML_TAGS.EBML, _ebml_helpers_js__WEBPACK_IMPORTED_MODULE_2__.EBML_TAGS.DocType])[0]; // check if DocType EBML tag is webm - - return (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(docType, CONSTANTS.webm); - }, - mkv: function mkv(bytes) { - var docType = (0,_ebml_helpers_js__WEBPACK_IMPORTED_MODULE_2__.findEbml)(bytes, [_ebml_helpers_js__WEBPACK_IMPORTED_MODULE_2__.EBML_TAGS.EBML, _ebml_helpers_js__WEBPACK_IMPORTED_MODULE_2__.EBML_TAGS.DocType])[0]; // check if DocType EBML tag is matroska - - return (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(docType, CONSTANTS.matroska); - }, - mp4: function mp4(bytes) { - // if this file is another base media file format, it is not mp4 - if (_isLikely['3gp'](bytes) || _isLikely.mov(bytes)) { - return false; - } // if this file starts with a ftyp or styp box its mp4 - - - if ((0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, CONSTANTS.mp4, { - offset: 4 - }) || (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, CONSTANTS.fmp4, { - offset: 4 - })) { - return true; - } // if this file starts with a moof/moov box its mp4 - - - if ((0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, CONSTANTS.moof, { - offset: 4 - }) || (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, CONSTANTS.moov, { - offset: 4 - })) { - return true; - } - }, - mov: function mov(bytes) { - return (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, CONSTANTS.mov, { - offset: 4 - }); - }, - '3gp': function gp(bytes) { - return (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, CONSTANTS['3gp'], { - offset: 4 - }); - }, - ac3: function ac3(bytes) { - var offset = (0,_id3_helpers_js__WEBPACK_IMPORTED_MODULE_3__.getId3Offset)(bytes); - return (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, CONSTANTS.ac3, { - offset: offset - }); - }, - ts: function ts(bytes) { - if (bytes.length < 189 && bytes.length >= 1) { - return bytes[0] === 0x47; - } - - var i = 0; // check the first 376 bytes for two matching sync bytes - - while (i + 188 < bytes.length && i < 188) { - if (bytes[i] === 0x47 && bytes[i + 188] === 0x47) { - return true; + if (xhr.setRequestHeader) { + for (key in headers) { + if (headers.hasOwnProperty(key)) { + xhr.setRequestHeader(key, headers[key]); } - - i += 1; } - - return false; - }, - flac: function flac(bytes) { - var offset = (0,_id3_helpers_js__WEBPACK_IMPORTED_MODULE_3__.getId3Offset)(bytes); - return (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, CONSTANTS.flac, { - offset: offset - }); - }, - ogg: function ogg(bytes) { - return (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, CONSTANTS.ogg); - }, - avi: function avi(bytes) { - return (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, CONSTANTS.riff) && (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, CONSTANTS.avi, { - offset: 8 - }); - }, - wav: function wav(bytes) { - return (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, CONSTANTS.riff) && (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, CONSTANTS.wav, { - offset: 8 - }); - }, - 'h264': function h264(bytes) { - // find seq_parameter_set_rbsp - return (0,_nal_helpers_js__WEBPACK_IMPORTED_MODULE_4__.findH264Nal)(bytes, 7, 3).length; - }, - 'h265': function h265(bytes) { - // find video_parameter_set_rbsp or seq_parameter_set_rbsp - return (0,_nal_helpers_js__WEBPACK_IMPORTED_MODULE_4__.findH265Nal)(bytes, [32, 33], 3).length; + } else if (options.headers && !isEmpty(options.headers)) { + throw new Error("Headers cannot be set on an XDomainRequest object"); } -}; // get all the isLikely functions -// but make sure 'ts' is above h264 and h265 -// but below everything else as it is the least specific -var isLikelyTypes = Object.keys(_isLikely) // remove ts, h264, h265 -.filter(function (t) { - return t !== 'ts' && t !== 'h264' && t !== 'h265'; -}) // add it back to the bottom -.concat(['ts', 'h264', 'h265']); // make sure we are dealing with uint8 data. + if ("responseType" in options) { + xhr.responseType = options.responseType; + } -isLikelyTypes.forEach(function (type) { - var isLikelyFn = _isLikely[type]; + if ("beforeSend" in options && typeof options.beforeSend === "function") { + options.beforeSend(xhr); + } // Microsoft Edge browser sends "undefined" when send is called with undefined value. + // XMLHttpRequest spec says to pass null as body to indicate no body + // See https://github.com/naugtur/xhr/issues/100. - _isLikely[type] = function (bytes) { - return isLikelyFn((0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)(bytes)); - }; -}); // export after wrapping -var isLikely = _isLikely; // A useful list of file signatures can be found here -// https://en.wikipedia.org/wiki/List_of_file_signatures + xhr.send(body || null); + return xhr; +} -var detectContainerForBytes = function detectContainerForBytes(bytes) { - bytes = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)(bytes); +function getXml(xhr) { + // xhr.responseXML will throw Exception "InvalidStateError" or "DOMException" + // See https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/responseXML. + try { + if (xhr.responseType === "document") { + return xhr.responseXML; + } - for (var i = 0; i < isLikelyTypes.length; i++) { - var type = isLikelyTypes[i]; + var firefoxBugTakenEffect = xhr.responseXML && xhr.responseXML.documentElement.nodeName === "parsererror"; - if (isLikely[type](bytes)) { - return type; + if (xhr.responseType === "" && !firefoxBugTakenEffect) { + return xhr.responseXML; } - } + } catch (e) {} - return ''; -}; // fmp4 is not a container + return null; +} -var isLikelyFmp4MediaSegment = function isLikelyFmp4MediaSegment(bytes) { - return (0,_mp4_helpers_js__WEBPACK_IMPORTED_MODULE_1__.findBox)(bytes, ['moof']).length > 0; -}; +function noop() {} /***/ }), -/***/ "./node_modules/@videojs/vhs-utils/es/ebml-helpers.js": -/*!************************************************************!*\ - !*** ./node_modules/@videojs/vhs-utils/es/ebml-helpers.js ***! - \************************************************************/ +/***/ "./src/js/components/accordion.js": +/*!****************************************!*\ + !*** ./src/js/components/accordion.js ***! + \****************************************/ /***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { "use strict"; __webpack_require__.r(__webpack_exports__); /* harmony export */ __webpack_require__.d(__webpack_exports__, { -/* harmony export */ EBML_TAGS: () => (/* binding */ EBML_TAGS), -/* harmony export */ decodeBlock: () => (/* binding */ decodeBlock), -/* harmony export */ findEbml: () => (/* binding */ findEbml), -/* harmony export */ parseData: () => (/* binding */ parseData), -/* harmony export */ parseTracks: () => (/* binding */ parseTracks) +/* harmony export */ toggleAccordion: () => (/* binding */ toggleAccordion) /* harmony export */ }); -/* harmony import */ var _byte_helpers__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./byte-helpers */ "./node_modules/@videojs/vhs-utils/es/byte-helpers.js"); -/* harmony import */ var _codec_helpers_js__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./codec-helpers.js */ "./node_modules/@videojs/vhs-utils/es/codec-helpers.js"); - - // relevant specs for this parser: -// https://matroska-org.github.io/libebml/specs.html -// https://www.matroska.org/technical/elements.html -// https://www.webmproject.org/docs/container/ - -var EBML_TAGS = { - EBML: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x1A, 0x45, 0xDF, 0xA3]), - DocType: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x42, 0x82]), - Segment: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x18, 0x53, 0x80, 0x67]), - SegmentInfo: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x15, 0x49, 0xA9, 0x66]), - Tracks: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x16, 0x54, 0xAE, 0x6B]), - Track: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0xAE]), - TrackNumber: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0xd7]), - DefaultDuration: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x23, 0xe3, 0x83]), - TrackEntry: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0xAE]), - TrackType: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x83]), - FlagDefault: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x88]), - CodecID: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x86]), - CodecPrivate: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x63, 0xA2]), - VideoTrack: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0xe0]), - AudioTrack: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0xe1]), - // Not used yet, but will be used for live webm/mkv - // see https://www.matroska.org/technical/basics.html#block-structure - // see https://www.matroska.org/technical/basics.html#simpleblock-structure - Cluster: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x1F, 0x43, 0xB6, 0x75]), - Timestamp: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0xE7]), - TimestampScale: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x2A, 0xD7, 0xB1]), - BlockGroup: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0xA0]), - BlockDuration: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x9B]), - Block: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0xA1]), - SimpleBlock: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0xA3]) +let items = document.querySelectorAll('.accordion__item'); +let title = document.querySelectorAll('.accordion__title-wrapper'); +const toggleAccordion = () => { + title.forEach(question => question.addEventListener('click', function () { + let thisItem = this.parentNode; + items.forEach(item => { + if (thisItem == item) { + thisItem.classList.toggle('active'); + return; + } + item.classList.remove('active'); + }); + })); }; -/** - * This is a simple table to determine the length - * of things in ebml. The length is one based (starts at 1, - * rather than zero) and for every zero bit before a one bit - * we add one to length. We also need this table because in some - * case we have to xor all the length bits from another value. - */ -var LENGTH_TABLE = [128, 64, 32, 16, 8, 4, 2, 1]; +/***/ }), -var getLength = function getLength(byte) { - var len = 1; +/***/ "./src/js/components/burger-menu.js": +/*!******************************************!*\ + !*** ./src/js/components/burger-menu.js ***! + \******************************************/ +/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { - for (var i = 0; i < LENGTH_TABLE.length; i++) { - if (byte & LENGTH_TABLE[i]) { - break; +"use strict"; +__webpack_require__.r(__webpack_exports__); +/* harmony export */ __webpack_require__.d(__webpack_exports__, { +/* harmony export */ changeMenu: () => (/* binding */ changeMenu) +/* harmony export */ }); +const burger = document.querySelector('.burger-js'); +const menu = document.querySelector('.menu-js'); +const menuLinks = document.querySelectorAll('.nav__link'); +const changeMenu = () => { + burger?.addEventListener('click', () => { + menu?.classList.toggle('active'); + burger?.classList.toggle('active'); + if (menu?.classList.contains('active')) { + document.body.style.overflowY = 'hidden'; + } else { + document.body.style.overflowY = 'auto'; } - - len++; - } - - return len; -}; // length in ebml is stored in the first 4 to 8 bits -// of the first byte. 4 for the id length and 8 for the -// data size length. Length is measured by converting the number to binary -// then 1 + the number of zeros before a 1 is encountered starting -// from the left. - - -var getvint = function getvint(bytes, offset, removeLength, signed) { - if (removeLength === void 0) { - removeLength = true; - } - - if (signed === void 0) { - signed = false; - } - - var length = getLength(bytes[offset]); - var valueBytes = bytes.subarray(offset, offset + length); // NOTE that we do **not** subarray here because we need to copy these bytes - // as they will be modified below to remove the dataSizeLen bits and we do not - // want to modify the original data. normally we could just call slice on - // uint8array but ie 11 does not support that... - - if (removeLength) { - valueBytes = Array.prototype.slice.call(bytes, offset, offset + length); - valueBytes[0] ^= LENGTH_TABLE[length - 1]; - } - - return { - length: length, - value: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(valueBytes, { - signed: signed - }), - bytes: valueBytes - }; -}; - -var normalizePath = function normalizePath(path) { - if (typeof path === 'string') { - return path.match(/.{1,2}/g).map(function (p) { - return normalizePath(p); + }); + menuLinks.forEach(el => { + el.addEventListener('click', () => { + menu?.classList.remove('active'); + document.body.style.overflowY = 'auto'; + burger?.classList.remove('active'); }); - } - - if (typeof path === 'number') { - return (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.numberToBytes)(path); - } - - return path; -}; - -var normalizePaths = function normalizePaths(paths) { - if (!Array.isArray(paths)) { - return [normalizePath(paths)]; - } - - return paths.map(function (p) { - return normalizePath(p); }); }; -var getInfinityDataSize = function getInfinityDataSize(id, bytes, offset) { - if (offset >= bytes.length) { - return bytes.length; - } - - var innerid = getvint(bytes, offset, false); - - if ((0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(id.bytes, innerid.bytes)) { - return offset; - } - - var dataHeader = getvint(bytes, offset + innerid.length); - return getInfinityDataSize(id, bytes, offset + dataHeader.length + dataHeader.value + innerid.length); -}; -/** - * Notes on the EBLM format. - * - * EBLM uses "vints" tags. Every vint tag contains - * two parts - * - * 1. The length from the first byte. You get this by - * converting the byte to binary and counting the zeros - * before a 1. Then you add 1 to that. Examples - * 00011111 = length 4 because there are 3 zeros before a 1. - * 00100000 = length 3 because there are 2 zeros before a 1. - * 00000011 = length 7 because there are 6 zeros before a 1. - * - * 2. The bits used for length are removed from the first byte - * Then all the bytes are merged into a value. NOTE: this - * is not the case for id ebml tags as there id includes - * length bits. - * - */ - - -var findEbml = function findEbml(bytes, paths) { - paths = normalizePaths(paths); - bytes = (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)(bytes); - var results = []; - - if (!paths.length) { - return results; - } - - var i = 0; - - while (i < bytes.length) { - var id = getvint(bytes, i, false); - var dataHeader = getvint(bytes, i + id.length); - var dataStart = i + id.length + dataHeader.length; // dataSize is unknown or this is a live stream - - if (dataHeader.value === 0x7f) { - dataHeader.value = getInfinityDataSize(id, bytes, dataStart); - - if (dataHeader.value !== bytes.length) { - dataHeader.value -= dataStart; - } - } +/***/ }), - var dataEnd = dataStart + dataHeader.value > bytes.length ? bytes.length : dataStart + dataHeader.value; - var data = bytes.subarray(dataStart, dataEnd); +/***/ "./src/js/components/paint-btn.js": +/*!****************************************!*\ + !*** ./src/js/components/paint-btn.js ***! + \****************************************/ +/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { - if ((0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(paths[0], id.bytes)) { - if (paths.length === 1) { - // this is the end of the paths and we've found the tag we were - // looking for - results.push(data); +"use strict"; +__webpack_require__.r(__webpack_exports__); +/* harmony export */ __webpack_require__.d(__webpack_exports__, { +/* harmony export */ paintBtn: () => (/* binding */ paintBtn) +/* harmony export */ }); +const btnNext = document.querySelector('.nav-history__next'); +const paintBtn = () => { + try { + const scrollToTop = () => { + const top = window.scrollY; + if (top >= 100) { + btnNext.classList.add('active'); } else { - // recursively search for the next tag inside of the data - // of this one - results = results.concat(findEbml(data, paths.slice(1))); + btnNext.classList.remove('active'); } - } - - var totalLength = id.length + dataHeader.length + data.length; // move past this tag entirely, we are not looking for it - - i += totalLength; + }; + scrollToTop(); + window.addEventListener('scroll', () => { + scrollToTop(); + }); + } catch (e) { + console.log(e); } +}; - return results; -}; // see https://www.matroska.org/technical/basics.html#block-structure +/***/ }), -var decodeBlock = function decodeBlock(block, type, timestampScale, clusterTimestamp) { - var duration; +/***/ "./src/js/components/scroll-smooth.js": +/*!********************************************!*\ + !*** ./src/js/components/scroll-smooth.js ***! + \********************************************/ +/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { - if (type === 'group') { - duration = findEbml(block, [EBML_TAGS.BlockDuration])[0]; +"use strict"; +__webpack_require__.r(__webpack_exports__); +/* harmony export */ __webpack_require__.d(__webpack_exports__, { +/* harmony export */ addSmoothScroll: () => (/* binding */ addSmoothScroll) +/* harmony export */ }); +/* harmony import */ var _node_modules_smooth_scroll_dist_smooth_scroll_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ../../../node_modules/smooth-scroll/dist/smooth-scroll.js */ "./node_modules/smooth-scroll/dist/smooth-scroll.js"); +/* harmony import */ var _node_modules_smooth_scroll_dist_smooth_scroll_js__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(_node_modules_smooth_scroll_dist_smooth_scroll_js__WEBPACK_IMPORTED_MODULE_0__); - if (duration) { - duration = (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(duration); - duration = 1 / timestampScale * duration * timestampScale / 1000; +const header = document.querySelector('header'); +const btnUpWrapper = document.querySelector('.btn-up-wrapper'); +const addSmoothScroll = () => { + const scroll = new (_node_modules_smooth_scroll_dist_smooth_scroll_js__WEBPACK_IMPORTED_MODULE_0___default())('a[href*="#"]', { + header: '.header', + speed: 500 + }); + const scrollToTop = () => { + const top = window.scrollY; + if (top >= 100) { + header.classList.add('active'); + } else { + header.classList.remove('active'); } + if (top >= 300) { + btnUpWrapper.classList.add('active'); + } else { + btnUpWrapper.classList.remove('active'); + } + }; + scrollToTop(); + window.addEventListener('scroll', () => { + scrollToTop(); + }); +}; - block = findEbml(block, [EBML_TAGS.Block])[0]; - type = 'block'; // treat data as a block after this point - } +/***/ }), - var dv = new DataView(block.buffer, block.byteOffset, block.byteLength); - var trackNumber = getvint(block, 0); - var timestamp = dv.getInt16(trackNumber.length, false); - var flags = block[trackNumber.length + 2]; - var data = block.subarray(trackNumber.length + 3); // pts/dts in seconds +/***/ "./src/js/components/sliders.js": +/*!**************************************!*\ + !*** ./src/js/components/sliders.js ***! + \**************************************/ +/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { - var ptsdts = 1 / timestampScale * (clusterTimestamp + timestamp) * timestampScale / 1000; // return the frame +"use strict"; +__webpack_require__.r(__webpack_exports__); +/* harmony export */ __webpack_require__.d(__webpack_exports__, { +/* harmony export */ initializationSliders: () => (/* binding */ initializationSliders) +/* harmony export */ }); +/* harmony import */ var swiper__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! swiper */ "./node_modules/swiper/swiper.esm.js"); - var parsed = { - duration: duration, - trackNumber: trackNumber.value, - keyframe: type === 'simple' && flags >> 7 === 1, - invisible: (flags & 0x08) >> 3 === 1, - lacing: (flags & 0x06) >> 1, - discardable: type === 'simple' && (flags & 0x01) === 1, - frames: [], - pts: ptsdts, - dts: ptsdts, - timestamp: timestamp - }; - - if (!parsed.lacing) { - parsed.frames.push(data); - return parsed; +swiper__WEBPACK_IMPORTED_MODULE_0__["default"].use([swiper__WEBPACK_IMPORTED_MODULE_0__.Navigation, swiper__WEBPACK_IMPORTED_MODULE_0__.Pagination, swiper__WEBPACK_IMPORTED_MODULE_0__.Autoplay]); +const initializationSliders = () => { + try { + const recomendationsSlider = new swiper__WEBPACK_IMPORTED_MODULE_0__["default"]('.recommendations__slider', { + slidesPerView: '1', + navigation: { + nextEl: '.recommendations__slider-navigation-next', + prevEl: '.recommendations__slider-navigation-prev' + }, + loop: true + }); + const goodsSlider = new swiper__WEBPACK_IMPORTED_MODULE_0__["default"]('.goods__slider', { + slidesPerView: 3, + loop: true, + navigation: { + nextEl: '.goods__slider-next', + prevEl: '.goods__slider-prev' + }, + pagination: { + clickable: true, + el: '.goods__slider-pagination', + clickable: true + }, + breakpoints: { + 940: { + slidesPerView: 4 + }, + 764: { + slidesPerView: 3 + }, + 600: { + slidesPerView: 2 + }, + 0: { + slidesPerView: 1 + } + } + }); + const professionalSlider = new swiper__WEBPACK_IMPORTED_MODULE_0__["default"]('.professional__slider', { + navigation: { + nextEl: '.professional__slider-navigation-next', + prevEl: '.professional__slider-navigation-prev' + }, + paginationClickable: true, + // loop: true, + initialSlide: 1, + centeredSlides: true, + slidesPerView: 2, + speed: 1000, + zoom: { + maxRatio: 1.6 + }, + pagination: { + clickable: true, + el: '.professional__slider-pagination', + clickable: true + }, + breakpoints: { + 993: { + spaceBetween: -180 + }, + 860: { + spaceBetween: -260, + slidesPerView: 2 + }, + 768: { + spaceBetween: -200 + }, + 500: { + spaceBetween: -80 + }, + 320: { + slidesPerView: 1.6, + spaceBetween: -80 + } + }, + allowTouchMove: false + }); + const interviewSlider = new swiper__WEBPACK_IMPORTED_MODULE_0__["default"]('.interview__slider', { + navigation: { + nextEl: '.interview__slider-navigation-next', + prevEl: '.interview__slider-navigation-prev' + }, + pagination: { + el: '.interview__slider-pagination', + clickable: true + }, + allowTouchMove: false, + paginationClickable: true, + centeredSlides: true, + loop: true, + speed: 1000 + }); + const partnersSlider = new swiper__WEBPACK_IMPORTED_MODULE_0__["default"]('.partners__wrapper', { + freeMode: true, + grabCursor: true, + centeredSlides: true, + slidesPerView: 'auto', + loop: true, + speed: 2000, + autoplay: { + enabled: true, + delay: 1, + disableOnInteraction: true + }, + freeModeMomentum: true + }); + document.querySelector('.partners__wrapper').addEventListener('mouseover', function () { + partnersSlider.autoplay.stop(); + }); + document.querySelector('.partners__wrapper').addEventListener('mouseout', function () { + partnersSlider.autoplay.start(); + }); + window.addEventListener('scroll', () => { + if (!partnersSlider.autoplay.running) { + partnersSlider.autoplay.start(); + } + }); + } catch (e) { + console.error(e); } +}; - var numberOfFrames = data[0] + 1; - var frameSizes = []; - var offset = 1; // Fixed +/***/ }), - if (parsed.lacing === 2) { - var sizeOfFrame = (data.length - offset) / numberOfFrames; +/***/ "./src/js/components/video-player.js": +/*!*******************************************!*\ + !*** ./src/js/components/video-player.js ***! + \*******************************************/ +/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { - for (var i = 0; i < numberOfFrames; i++) { - frameSizes.push(sizeOfFrame); - } - } // xiph +"use strict"; +__webpack_require__.r(__webpack_exports__); +/* harmony export */ __webpack_require__.d(__webpack_exports__, { +/* harmony export */ addVideoPlayer: () => (/* binding */ addVideoPlayer) +/* harmony export */ }); +/* harmony import */ var video_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! video.js */ "./node_modules/video.js/dist/video.es.js"); +const playBtn = document.querySelector('.video__btn'); +const videoTitle = document.querySelector('.video__title'); +const videoText = document.querySelector('.video__text'); +const videoLink = document.querySelector('.video__link'); +const videoGradient = document.querySelector('.video__gradient'); +const videoIntro = document.querySelector('.video__intro'); +const videoMask = document.querySelector('.video__mask'); +const videoJsTech = document.querySelector('.vjs-tech'); +const addVideoPlayer = () => { + try { + let isPreviewVideo = true; + const videoPlayer = (0,video_js__WEBPACK_IMPORTED_MODULE_0__["default"])(document.getElementById('video__player'), { + autoplay: true, + loop: true, + muted: true, + controls: false, + playToggle: false + }); + const loadMainVideo = (desktopUrl, mobileUrl) => { + if (window.screen.width > 768) { + videoPlayer.src({ + type: 'video/mp4', + src: `./videos/${desktopUrl}` + }); + } else { + videoPlayer.src({ + type: 'video/mp4', + src: `./videos/${mobileUrl}` + }); + } + }; + loadMainVideo('preview.mp4', 'preview-mobile.mp4'); + videoPlayer.volume(0.7); + const changePlayerStatus = () => { + videoPlayer.play(); + videoPlayer.addClass('play'); + videoPlayer.muted(false); + videoPlayer.controls(true); + videoPlayer.loop(false); + playBtn.classList.add('hide'); + videoTitle.classList.add('hide'); + videoText.classList.add('hide'); + videoLink.classList.add('hide'); + }; + videoPlayer.on('play', () => { + if (!videoPlayer.played()) { + videoPlayer.addClass('play'); + videoPlayer.removeClass('play'); + playBtn?.classList.add('hide'); + } else if (videoPlayer.played() && videoPlayer.loop()) { + videoPlayer.removeClass('play'); + } else if (videoPlayer.played() && !videoPlayer.loop()) { + videoPlayer.removeClass('play'); + playBtn?.classList.add('hide'); + } + }); + videoPlayer.on('pause', () => { + playBtn?.classList.remove('hide'); + }); + videoPlayer.on('ended', () => { + playBtn?.classList.remove('hide'); + videoMask?.classList.remove('visible'); + }); + videoMask.addEventListener('click', () => { + playBtn?.classList.remove('hide'); + videoPlayer.pause(); + videoMask?.classList.remove('visible'); + }); + playBtn.addEventListener('click', () => { + if (isPreviewVideo === true) { + loadMainVideo('video.mp4', 'video-mobile.mp4'); + isPreviewVideo = false; + } + document.querySelector('.video__inner').classList.add('active'); + document.querySelector('.video-js').classList.add('active'); + document.querySelector('.vjs-poster').classList.add('active'); + videoPlayer.fluid(true); + videoGradient?.classList.add('hide'); + videoMask?.classList.add('visible'); + playBtn?.classList.add('center-position'); + document.querySelector('video').style.objectFit = 'contain'; + if (videoPlayer.muted()) { + videoPlayer.currentTime(0); + changePlayerStatus(); + } else { + changePlayerStatus(); + } + }); + } catch (e) { + console.log(e); + } +}; - if (parsed.lacing === 1) { - for (var _i = 0; _i < numberOfFrames - 1; _i++) { - var size = 0; +/***/ }), - do { - size += data[offset]; - offset++; - } while (data[offset - 1] === 0xFF); +/***/ "./node_modules/global/document.js": +/*!*****************************************!*\ + !*** ./node_modules/global/document.js ***! + \*****************************************/ +/***/ ((module, __unused_webpack_exports, __webpack_require__) => { - frameSizes.push(size); - } - } // ebml +var topLevel = typeof __webpack_require__.g !== 'undefined' ? __webpack_require__.g : + typeof window !== 'undefined' ? window : {} +var minDoc = __webpack_require__(/*! min-document */ "?34aa"); +var doccy; - if (parsed.lacing === 3) { - // first vint is unsinged - // after that vints are singed and - // based on a compounding size - var _size = 0; +if (typeof document !== 'undefined') { + doccy = document; +} else { + doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4']; - for (var _i2 = 0; _i2 < numberOfFrames - 1; _i2++) { - var vint = _i2 === 0 ? getvint(data, offset) : getvint(data, offset, true, true); - _size += vint.value; - frameSizes.push(_size); - offset += vint.length; + if (!doccy) { + doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4'] = minDoc; } - } +} - frameSizes.forEach(function (size) { - parsed.frames.push(data.subarray(offset, offset + size)); - offset += size; - }); - return parsed; -}; // VP9 Codec Feature Metadata (CodecPrivate) -// https://www.webmproject.org/docs/container/ +module.exports = doccy; -var parseVp9Private = function parseVp9Private(bytes) { - var i = 0; - var params = {}; - while (i < bytes.length) { - var id = bytes[i] & 0x7f; - var len = bytes[i + 1]; - var val = void 0; +/***/ }), - if (len === 1) { - val = bytes[i + 2]; - } else { - val = bytes.subarray(i + 2, i + 2 + len); - } +/***/ "./node_modules/global/window.js": +/*!***************************************!*\ + !*** ./node_modules/global/window.js ***! + \***************************************/ +/***/ ((module, __unused_webpack_exports, __webpack_require__) => { - if (id === 1) { - params.profile = val; - } else if (id === 2) { - params.level = val; - } else if (id === 3) { - params.bitDepth = val; - } else if (id === 4) { - params.chromaSubsampling = val; - } else { - params[id] = val; - } +var win; - i += 2 + len; - } +if (typeof window !== "undefined") { + win = window; +} else if (typeof __webpack_require__.g !== "undefined") { + win = __webpack_require__.g; +} else if (typeof self !== "undefined"){ + win = self; +} else { + win = {}; +} - return params; -}; +module.exports = win; -var parseTracks = function parseTracks(bytes) { - bytes = (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)(bytes); - var decodedTracks = []; - var tracks = findEbml(bytes, [EBML_TAGS.Segment, EBML_TAGS.Tracks, EBML_TAGS.Track]); - if (!tracks.length) { - tracks = findEbml(bytes, [EBML_TAGS.Tracks, EBML_TAGS.Track]); - } +/***/ }), - if (!tracks.length) { - tracks = findEbml(bytes, [EBML_TAGS.Track]); - } +/***/ "./node_modules/is-function/index.js": +/*!*******************************************!*\ + !*** ./node_modules/is-function/index.js ***! + \*******************************************/ +/***/ ((module) => { - if (!tracks.length) { - return decodedTracks; +module.exports = isFunction + +var toString = Object.prototype.toString + +function isFunction (fn) { + if (!fn) { + return false } + var string = toString.call(fn) + return string === '[object Function]' || + (typeof fn === 'function' && string !== '[object RegExp]') || + (typeof window !== 'undefined' && + // IE8 and below + (fn === window.setTimeout || + fn === window.alert || + fn === window.confirm || + fn === window.prompt)) +}; - tracks.forEach(function (track) { - var trackType = findEbml(track, EBML_TAGS.TrackType)[0]; - if (!trackType || !trackType.length) { - return; - } // 1 is video, 2 is audio, 17 is subtitle - // other values are unimportant in this context +/***/ }), +/***/ "./node_modules/keycode/index.js": +/*!***************************************!*\ + !*** ./node_modules/keycode/index.js ***! + \***************************************/ +/***/ ((module, exports) => { - if (trackType[0] === 1) { - trackType = 'video'; - } else if (trackType[0] === 2) { - trackType = 'audio'; - } else if (trackType[0] === 17) { - trackType = 'subtitle'; - } else { - return; - } // todo parse language +// Source: http://jsfiddle.net/vWx8V/ +// http://stackoverflow.com/questions/5603195/full-list-of-javascript-keycodes +/** + * Conenience method returns corresponding value for given keyName or keyCode. + * + * @param {Mixed} keyCode {Number} or keyName {String} + * @return {Mixed} + * @api public + */ - var decodedTrack = { - rawCodec: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.bytesToString)(findEbml(track, [EBML_TAGS.CodecID])[0]), - type: trackType, - codecPrivate: findEbml(track, [EBML_TAGS.CodecPrivate])[0], - number: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(findEbml(track, [EBML_TAGS.TrackNumber])[0]), - defaultDuration: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(findEbml(track, [EBML_TAGS.DefaultDuration])[0]), - default: findEbml(track, [EBML_TAGS.FlagDefault])[0], - rawData: track - }; - var codec = ''; +function keyCode(searchInput) { + // Keyboard Events + if (searchInput && 'object' === typeof searchInput) { + var hasKeyCode = searchInput.which || searchInput.keyCode || searchInput.charCode + if (hasKeyCode) searchInput = hasKeyCode + } - if (/V_MPEG4\/ISO\/AVC/.test(decodedTrack.rawCodec)) { - codec = "avc1." + (0,_codec_helpers_js__WEBPACK_IMPORTED_MODULE_1__.getAvcCodec)(decodedTrack.codecPrivate); - } else if (/V_MPEGH\/ISO\/HEVC/.test(decodedTrack.rawCodec)) { - codec = "hev1." + (0,_codec_helpers_js__WEBPACK_IMPORTED_MODULE_1__.getHvcCodec)(decodedTrack.codecPrivate); - } else if (/V_MPEG4\/ISO\/ASP/.test(decodedTrack.rawCodec)) { - if (decodedTrack.codecPrivate) { - codec = 'mp4v.20.' + decodedTrack.codecPrivate[4].toString(); - } else { - codec = 'mp4v.20.9'; - } - } else if (/^V_THEORA/.test(decodedTrack.rawCodec)) { - codec = 'theora'; - } else if (/^V_VP8/.test(decodedTrack.rawCodec)) { - codec = 'vp8'; - } else if (/^V_VP9/.test(decodedTrack.rawCodec)) { - if (decodedTrack.codecPrivate) { - var _parseVp9Private = parseVp9Private(decodedTrack.codecPrivate), - profile = _parseVp9Private.profile, - level = _parseVp9Private.level, - bitDepth = _parseVp9Private.bitDepth, - chromaSubsampling = _parseVp9Private.chromaSubsampling; + // Numbers + if ('number' === typeof searchInput) return names[searchInput] - codec = 'vp09.'; - codec += (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.padStart)(profile, 2, '0') + "."; - codec += (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.padStart)(level, 2, '0') + "."; - codec += (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.padStart)(bitDepth, 2, '0') + "."; - codec += "" + (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.padStart)(chromaSubsampling, 2, '0'); // Video -> Colour -> Ebml name + // Everything else (cast to string) + var search = String(searchInput) - var matrixCoefficients = findEbml(track, [0xE0, [0x55, 0xB0], [0x55, 0xB1]])[0] || []; - var videoFullRangeFlag = findEbml(track, [0xE0, [0x55, 0xB0], [0x55, 0xB9]])[0] || []; - var transferCharacteristics = findEbml(track, [0xE0, [0x55, 0xB0], [0x55, 0xBA]])[0] || []; - var colourPrimaries = findEbml(track, [0xE0, [0x55, 0xB0], [0x55, 0xBB]])[0] || []; // if we find any optional codec parameter specify them all. + // check codes + var foundNamedKey = codes[search.toLowerCase()] + if (foundNamedKey) return foundNamedKey - if (matrixCoefficients.length || videoFullRangeFlag.length || transferCharacteristics.length || colourPrimaries.length) { - codec += "." + (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.padStart)(colourPrimaries[0], 2, '0'); - codec += "." + (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.padStart)(transferCharacteristics[0], 2, '0'); - codec += "." + (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.padStart)(matrixCoefficients[0], 2, '0'); - codec += "." + (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.padStart)(videoFullRangeFlag[0], 2, '0'); - } - } else { - codec = 'vp9'; - } - } else if (/^V_AV1/.test(decodedTrack.rawCodec)) { - codec = "av01." + (0,_codec_helpers_js__WEBPACK_IMPORTED_MODULE_1__.getAv1Codec)(decodedTrack.codecPrivate); - } else if (/A_ALAC/.test(decodedTrack.rawCodec)) { - codec = 'alac'; - } else if (/A_MPEG\/L2/.test(decodedTrack.rawCodec)) { - codec = 'mp2'; - } else if (/A_MPEG\/L3/.test(decodedTrack.rawCodec)) { - codec = 'mp3'; - } else if (/^A_AAC/.test(decodedTrack.rawCodec)) { - if (decodedTrack.codecPrivate) { - codec = 'mp4a.40.' + (decodedTrack.codecPrivate[0] >>> 3).toString(); - } else { - codec = 'mp4a.40.2'; - } - } else if (/^A_AC3/.test(decodedTrack.rawCodec)) { - codec = 'ac-3'; - } else if (/^A_PCM/.test(decodedTrack.rawCodec)) { - codec = 'pcm'; - } else if (/^A_MS\/ACM/.test(decodedTrack.rawCodec)) { - codec = 'speex'; - } else if (/^A_EAC3/.test(decodedTrack.rawCodec)) { - codec = 'ec-3'; - } else if (/^A_VORBIS/.test(decodedTrack.rawCodec)) { - codec = 'vorbis'; - } else if (/^A_FLAC/.test(decodedTrack.rawCodec)) { - codec = 'flac'; - } else if (/^A_OPUS/.test(decodedTrack.rawCodec)) { - codec = 'opus'; - } + // check aliases + var foundNamedKey = aliases[search.toLowerCase()] + if (foundNamedKey) return foundNamedKey - decodedTrack.codec = codec; - decodedTracks.push(decodedTrack); - }); - return decodedTracks.sort(function (a, b) { - return a.number - b.number; - }); -}; -var parseData = function parseData(data, tracks) { - var allBlocks = []; - var segment = findEbml(data, [EBML_TAGS.Segment])[0]; - var timestampScale = findEbml(segment, [EBML_TAGS.SegmentInfo, EBML_TAGS.TimestampScale])[0]; // in nanoseconds, defaults to 1ms + // weird character? + if (search.length === 1) return search.charCodeAt(0) - if (timestampScale && timestampScale.length) { - timestampScale = (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(timestampScale); - } else { - timestampScale = 1000000; - } - - var clusters = findEbml(segment, [EBML_TAGS.Cluster]); + return undefined +} - if (!tracks) { - tracks = parseTracks(segment); +/** + * Compares a keyboard event with a given keyCode or keyName. + * + * @param {Event} event Keyboard event that should be tested + * @param {Mixed} keyCode {Number} or keyName {String} + * @return {Boolean} + * @api public + */ +keyCode.isEventKey = function isEventKey(event, nameOrCode) { + if (event && 'object' === typeof event) { + var keyCode = event.which || event.keyCode || event.charCode + if (keyCode === null || keyCode === undefined) { return false; } + if (typeof nameOrCode === 'string') { + // check codes + var foundNamedKey = codes[nameOrCode.toLowerCase()] + if (foundNamedKey) { return foundNamedKey === keyCode; } + + // check aliases + var foundNamedKey = aliases[nameOrCode.toLowerCase()] + if (foundNamedKey) { return foundNamedKey === keyCode; } + } else if (typeof nameOrCode === 'number') { + return nameOrCode === keyCode; + } + return false; } +} - clusters.forEach(function (cluster, ci) { - var simpleBlocks = findEbml(cluster, [EBML_TAGS.SimpleBlock]).map(function (b) { - return { - type: 'simple', - data: b - }; - }); - var blockGroups = findEbml(cluster, [EBML_TAGS.BlockGroup]).map(function (b) { - return { - type: 'group', - data: b - }; - }); - var timestamp = findEbml(cluster, [EBML_TAGS.Timestamp])[0] || 0; +exports = module.exports = keyCode; - if (timestamp && timestamp.length) { - timestamp = (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(timestamp); - } // get all blocks then sort them into the correct order +/** + * Get by name + * + * exports.code['enter'] // => 13 + */ +var codes = exports.code = exports.codes = { + 'backspace': 8, + 'tab': 9, + 'enter': 13, + 'shift': 16, + 'ctrl': 17, + 'alt': 18, + 'pause/break': 19, + 'caps lock': 20, + 'esc': 27, + 'space': 32, + 'page up': 33, + 'page down': 34, + 'end': 35, + 'home': 36, + 'left': 37, + 'up': 38, + 'right': 39, + 'down': 40, + 'insert': 45, + 'delete': 46, + 'command': 91, + 'left command': 91, + 'right command': 93, + 'numpad *': 106, + 'numpad +': 107, + 'numpad -': 109, + 'numpad .': 110, + 'numpad /': 111, + 'num lock': 144, + 'scroll lock': 145, + 'my computer': 182, + 'my calculator': 183, + ';': 186, + '=': 187, + ',': 188, + '-': 189, + '.': 190, + '/': 191, + '`': 192, + '[': 219, + '\\': 220, + ']': 221, + "'": 222 +} - var blocks = simpleBlocks.concat(blockGroups).sort(function (a, b) { - return a.data.byteOffset - b.data.byteOffset; - }); - blocks.forEach(function (block, bi) { - var decoded = decodeBlock(block.data, block.type, timestampScale, timestamp); - allBlocks.push(decoded); - }); - }); - return { - tracks: tracks, - blocks: allBlocks - }; -}; +// Helper aliases -/***/ }), +var aliases = exports.aliases = { + 'windows': 91, + '⇧': 16, + '⌥': 18, + '⌃': 17, + '⌘': 91, + 'ctl': 17, + 'control': 17, + 'option': 18, + 'pause': 19, + 'break': 19, + 'caps': 20, + 'return': 13, + 'escape': 27, + 'spc': 32, + 'spacebar': 32, + 'pgup': 33, + 'pgdn': 34, + 'ins': 45, + 'del': 46, + 'cmd': 91 +} -/***/ "./node_modules/@videojs/vhs-utils/es/id3-helpers.js": -/*!***********************************************************!*\ - !*** ./node_modules/@videojs/vhs-utils/es/id3-helpers.js ***! - \***********************************************************/ -/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { +/*! + * Programatically add the following + */ -"use strict"; -__webpack_require__.r(__webpack_exports__); -/* harmony export */ __webpack_require__.d(__webpack_exports__, { -/* harmony export */ getId3Offset: () => (/* binding */ getId3Offset), -/* harmony export */ getId3Size: () => (/* binding */ getId3Size) -/* harmony export */ }); -/* harmony import */ var _byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./byte-helpers.js */ "./node_modules/@videojs/vhs-utils/es/byte-helpers.js"); +// lower case chars +for (i = 97; i < 123; i++) codes[String.fromCharCode(i)] = i - 32 -var ID3 = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x49, 0x44, 0x33]); -var getId3Size = function getId3Size(bytes, offset) { - if (offset === void 0) { - offset = 0; - } +// numbers +for (var i = 48; i < 58; i++) codes[i - 48] = i - bytes = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)(bytes); - var flags = bytes[offset + 5]; - var returnSize = bytes[offset + 6] << 21 | bytes[offset + 7] << 14 | bytes[offset + 8] << 7 | bytes[offset + 9]; - var footerPresent = (flags & 16) >> 4; +// function keys +for (i = 1; i < 13; i++) codes['f'+i] = i + 111 - if (footerPresent) { - return returnSize + 20; - } +// numpad keys +for (i = 0; i < 10; i++) codes['numpad '+i] = i + 96 - return returnSize + 10; -}; -var getId3Offset = function getId3Offset(bytes, offset) { - if (offset === void 0) { - offset = 0; - } +/** + * Get by code + * + * exports.name[13] // => 'Enter' + */ - bytes = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)(bytes); +var names = exports.names = exports.title = {} // title for backward compat - if (bytes.length - offset < 10 || !(0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, ID3, { - offset: offset - })) { - return offset; - } +// Create reverse mapping +for (i in codes) names[codes[i]] = i - offset += getId3Size(bytes, offset); // recursive check for id3 tags as some files - // have multiple ID3 tag sections even though - // they should not. +// Add aliases +for (var alias in aliases) { + codes[alias] = aliases[alias] +} - return getId3Offset(bytes, offset); -}; /***/ }), -/***/ "./node_modules/@videojs/vhs-utils/es/media-types.js": -/*!***********************************************************!*\ - !*** ./node_modules/@videojs/vhs-utils/es/media-types.js ***! - \***********************************************************/ +/***/ "./node_modules/m3u8-parser/dist/m3u8-parser.es.js": +/*!*********************************************************!*\ + !*** ./node_modules/m3u8-parser/dist/m3u8-parser.es.js ***! + \*********************************************************/ /***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { "use strict"; __webpack_require__.r(__webpack_exports__); /* harmony export */ __webpack_require__.d(__webpack_exports__, { -/* harmony export */ simpleTypeFromSourceType: () => (/* binding */ simpleTypeFromSourceType) +/* harmony export */ LineStream: () => (/* binding */ LineStream), +/* harmony export */ ParseStream: () => (/* binding */ ParseStream), +/* harmony export */ Parser: () => (/* binding */ Parser) /* harmony export */ }); -var MPEGURL_REGEX = /^(audio|video|application)\/(x-|vnd\.apple\.)?mpegurl/i; -var DASH_REGEX = /^application\/dash\+xml/i; +/* harmony import */ var _videojs_vhs_utils_es_stream_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! @videojs/vhs-utils/es/stream.js */ "./node_modules/@videojs/vhs-utils/es/stream.js"); +/* harmony import */ var _babel_runtime_helpers_extends__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! @babel/runtime/helpers/extends */ "./node_modules/@babel/runtime/helpers/esm/extends.js"); +/* harmony import */ var _videojs_vhs_utils_es_decode_b64_to_uint8_array_js__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! @videojs/vhs-utils/es/decode-b64-to-uint8-array.js */ "./node_modules/@videojs/vhs-utils/es/decode-b64-to-uint8-array.js"); +/*! @name m3u8-parser @version 6.2.0 @license Apache-2.0 */ + + + + /** - * Returns a string that describes the type of source based on a video source object's - * media type. - * - * @see {@link https://dev.w3.org/html5/pf-summary/video.html#dom-source-type|Source Type} + * @file m3u8/line-stream.js + */ +/** + * A stream that buffers string input and generates a `data` event for each + * line. * - * @param {string} type - * Video source object media type - * @return {('hls'|'dash'|'vhs-json'|null)} - * VHS source type string + * @class LineStream + * @extends Stream */ -var simpleTypeFromSourceType = function simpleTypeFromSourceType(type) { - if (MPEGURL_REGEX.test(type)) { - return 'hls'; +class LineStream extends _videojs_vhs_utils_es_stream_js__WEBPACK_IMPORTED_MODULE_0__["default"] { + constructor() { + super(); + this.buffer = ''; } + /** + * Add new data to be parsed. + * + * @param {string} data the text to process + */ - if (DASH_REGEX.test(type)) { - return 'dash'; - } // Denotes the special case of a manifest object passed to http-streaming instead of a - // source URL. - // - // See https://en.wikipedia.org/wiki/Media_type for details on specifying media types. - // - // In this case, vnd stands for vendor, video.js for the organization, VHS for this - // project, and the +json suffix identifies the structure of the media type. + push(data) { + let nextNewline; + this.buffer += data; + nextNewline = this.buffer.indexOf('\n'); - if (type === 'application/vnd.videojs.vhs+json') { - return 'vhs-json'; + for (; nextNewline > -1; nextNewline = this.buffer.indexOf('\n')) { + this.trigger('data', this.buffer.substring(0, nextNewline)); + this.buffer = this.buffer.substring(nextNewline + 1); + } } - return null; -}; - -/***/ }), - -/***/ "./node_modules/@videojs/vhs-utils/es/mp4-helpers.js": -/*!***********************************************************!*\ - !*** ./node_modules/@videojs/vhs-utils/es/mp4-helpers.js ***! - \***********************************************************/ -/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { - -"use strict"; -__webpack_require__.r(__webpack_exports__); -/* harmony export */ __webpack_require__.d(__webpack_exports__, { -/* harmony export */ addSampleDescription: () => (/* binding */ addSampleDescription), -/* harmony export */ buildFrameTable: () => (/* binding */ buildFrameTable), -/* harmony export */ findBox: () => (/* binding */ findBox), -/* harmony export */ findNamedBox: () => (/* binding */ findNamedBox), -/* harmony export */ parseDescriptors: () => (/* binding */ parseDescriptors), -/* harmony export */ parseMediaInfo: () => (/* binding */ parseMediaInfo), -/* harmony export */ parseTracks: () => (/* binding */ parseTracks) -/* harmony export */ }); -/* harmony import */ var _byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./byte-helpers.js */ "./node_modules/@videojs/vhs-utils/es/byte-helpers.js"); -/* harmony import */ var _codec_helpers_js__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./codec-helpers.js */ "./node_modules/@videojs/vhs-utils/es/codec-helpers.js"); -/* harmony import */ var _opus_helpers_js__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ./opus-helpers.js */ "./node_modules/@videojs/vhs-utils/es/opus-helpers.js"); - +} +const TAB = String.fromCharCode(0x09); +const parseByterange = function (byterangeString) { + // optionally match and capture 0+ digits before `@` + // optionally match and capture 0+ digits after `@` + const match = /([0-9.]*)?@?([0-9.]*)?/.exec(byterangeString || ''); + const result = {}; -var normalizePath = function normalizePath(path) { - if (typeof path === 'string') { - return (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.stringToBytes)(path); + if (match[1]) { + result.length = parseInt(match[1], 10); } - if (typeof path === 'number') { - return path; + if (match[2]) { + result.offset = parseInt(match[2], 10); } - return path; + return result; }; +/** + * "forgiving" attribute list psuedo-grammar: + * attributes -> keyvalue (',' keyvalue)* + * keyvalue -> key '=' value + * key -> [^=]* + * value -> '"' [^"]* '"' | [^,]* + */ -var normalizePaths = function normalizePaths(paths) { - if (!Array.isArray(paths)) { - return [normalizePath(paths)]; - } - return paths.map(function (p) { - return normalizePath(p); - }); +const attributeSeparator = function () { + const key = '[^=]*'; + const value = '"[^"]*"|[^,]*'; + const keyvalue = '(?:' + key + ')=(?:' + value + ')'; + return new RegExp('(?:^|,)(' + keyvalue + ')'); }; +/** + * Parse attributes from a line given the separator + * + * @param {string} attributes the attribute line to parse + */ -var DESCRIPTORS; -var parseDescriptors = function parseDescriptors(bytes) { - bytes = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)(bytes); - var results = []; - var i = 0; - while (bytes.length > i) { - var tag = bytes[i]; - var size = 0; - var headerSize = 0; // tag +const parseAttributes = function (attributes) { + const result = {}; - headerSize++; - var byte = bytes[headerSize]; // first byte + if (!attributes) { + return result; + } // split the string using attributes as the separator - headerSize++; - while (byte & 0x80) { - size = (byte & 0x7F) << 7; - byte = bytes[headerSize]; - headerSize++; - } + const attrs = attributes.split(attributeSeparator()); + let i = attrs.length; + let attr; - size += byte & 0x7F; + while (i--) { + // filter out unmatched portions of the string + if (attrs[i] === '') { + continue; + } // split the key and value - for (var z = 0; z < DESCRIPTORS.length; z++) { - var _DESCRIPTORS$z = DESCRIPTORS[z], - id = _DESCRIPTORS$z.id, - parser = _DESCRIPTORS$z.parser; - if (tag === id) { - results.push(parser(bytes.subarray(headerSize, headerSize + size))); - break; - } - } + attr = /([^=]*)=(.*)/.exec(attrs[i]).slice(1); // trim whitespace and remove optional quotes around the value - i += size + headerSize; + attr[0] = attr[0].replace(/^\s+|\s+$/g, ''); + attr[1] = attr[1].replace(/^\s+|\s+$/g, ''); + attr[1] = attr[1].replace(/^['"](.*)['"]$/g, '$1'); + result[attr[0]] = attr[1]; } - return results; + return result; }; -DESCRIPTORS = [{ - id: 0x03, - parser: function parser(bytes) { - var desc = { - tag: 0x03, - id: bytes[0] << 8 | bytes[1], - flags: bytes[2], - size: 3, - dependsOnEsId: 0, - ocrEsId: 0, - descriptors: [], - url: '' - }; // depends on es id - - if (desc.flags & 0x80) { - desc.dependsOnEsId = bytes[desc.size] << 8 | bytes[desc.size + 1]; - desc.size += 2; - } // url - - - if (desc.flags & 0x40) { - var len = bytes[desc.size]; - desc.url = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToString)(bytes.subarray(desc.size + 1, desc.size + 1 + len)); - desc.size += len; - } // ocr es id - - - if (desc.flags & 0x20) { - desc.ocrEsId = bytes[desc.size] << 8 | bytes[desc.size + 1]; - desc.size += 2; - } - - desc.descriptors = parseDescriptors(bytes.subarray(desc.size)) || []; - return desc; - } -}, { - id: 0x04, - parser: function parser(bytes) { - // DecoderConfigDescriptor - var desc = { - tag: 0x04, - oti: bytes[0], - streamType: bytes[1], - bufferSize: bytes[2] << 16 | bytes[3] << 8 | bytes[4], - maxBitrate: bytes[5] << 24 | bytes[6] << 16 | bytes[7] << 8 | bytes[8], - avgBitrate: bytes[9] << 24 | bytes[10] << 16 | bytes[11] << 8 | bytes[12], - descriptors: parseDescriptors(bytes.subarray(13)) - }; - return desc; - } -}, { - id: 0x05, - parser: function parser(bytes) { - // DecoderSpecificInfo - return { - tag: 0x05, - bytes: bytes - }; - } -}, { - id: 0x06, - parser: function parser(bytes) { - // SLConfigDescriptor - return { - tag: 0x06, - bytes: bytes - }; - } -}]; /** - * find any number of boxes by name given a path to it in an iso bmff - * such as mp4. - * - * @param {TypedArray} bytes - * bytes for the iso bmff to search for boxes in + * A line-level M3U8 parser event stream. It expects to receive input one + * line at a time and performs a context-free parse of its contents. A stream + * interpretation of a manifest can be useful if the manifest is expected to + * be too large to fit comfortably into memory or the entirety of the input + * is not immediately available. Otherwise, it's probably much easier to work + * with a regular `Parser` object. * - * @param {Uint8Array[]|string[]|string|Uint8Array} name - * An array of paths or a single path representing the name - * of boxes to search through in bytes. Paths may be - * uint8 (character codes) or strings. + * Produces `data` events with an object that captures the parser's + * interpretation of the input. That object has a property `tag` that is one + * of `uri`, `comment`, or `tag`. URIs only have a single additional + * property, `line`, which captures the entirety of the input without + * interpretation. Comments similarly have a single additional property + * `text` which is the input without the leading `#`. * - * @param {boolean} [complete=false] - * Should we search only for complete boxes on the final path. - * This is very useful when you do not want to get back partial boxes - * in the case of streaming files. + * Tags always have a property `tagType` which is the lower-cased version of + * the M3U8 directive without the `#EXT` or `#EXT-X-` prefix. For instance, + * `#EXT-X-MEDIA-SEQUENCE` becomes `media-sequence` when parsed. Unrecognized + * tags are given the tag type `unknown` and a single additional property + * `data` with the remainder of the input. * - * @return {Uint8Array[]} - * An array of the end paths that we found. + * @class ParseStream + * @extends Stream */ -var findBox = function findBox(bytes, paths, complete) { - if (complete === void 0) { - complete = false; - } - - paths = normalizePaths(paths); - bytes = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)(bytes); - var results = []; - if (!paths.length) { - // short-circuit the search for empty paths - return results; +class ParseStream extends _videojs_vhs_utils_es_stream_js__WEBPACK_IMPORTED_MODULE_0__["default"] { + constructor() { + super(); + this.customParsers = []; + this.tagMappers = []; } + /** + * Parses an additional line of input. + * + * @param {string} line a single line of an M3U8 file to parse + */ - var i = 0; - while (i < bytes.length) { - var size = (bytes[i] << 24 | bytes[i + 1] << 16 | bytes[i + 2] << 8 | bytes[i + 3]) >>> 0; - var type = bytes.subarray(i + 4, i + 8); // invalid box format. + push(line) { + let match; + let event; // strip whitespace - if (size === 0) { - break; - } + line = line.trim(); - var end = i + size; - - if (end > bytes.length) { - // this box is bigger than the number of bytes we have - // and complete is set, we cannot find any more boxes. - if (complete) { - break; - } + if (line.length === 0) { + // ignore empty lines + return; + } // URIs - end = bytes.length; - } - var data = bytes.subarray(i + 8, end); + if (line[0] !== '#') { + this.trigger('data', { + type: 'uri', + uri: line + }); + return; + } // map tags - if ((0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(type, paths[0])) { - if (paths.length === 1) { - // this is the end of the path and we've found the box we were - // looking for - results.push(data); - } else { - // recursively search for the next box along the path - results.push.apply(results, findBox(data, paths.slice(1), complete)); - } - } - i = end; - } // we've finished searching all of bytes + const newLines = this.tagMappers.reduce((acc, mapper) => { + const mappedLine = mapper(line); // skip if unchanged + if (mappedLine === line) { + return acc; + } - return results; -}; -/** - * Search for a single matching box by name in an iso bmff format like - * mp4. This function is useful for finding codec boxes which - * can be placed arbitrarily in sample descriptions depending - * on the version of the file or file type. - * - * @param {TypedArray} bytes - * bytes for the iso bmff to search for boxes in - * - * @param {string|Uint8Array} name - * The name of the box to find. - * - * @return {Uint8Array[]} - * a subarray of bytes representing the name boxed we found. - */ + return acc.concat([mappedLine]); + }, [line]); + newLines.forEach(newLine => { + for (let i = 0; i < this.customParsers.length; i++) { + if (this.customParsers[i].call(this, newLine)) { + return; + } + } // Comments -var findNamedBox = function findNamedBox(bytes, name) { - name = normalizePath(name); - if (!name.length) { - // short-circuit the search for empty paths - return bytes.subarray(bytes.length); - } + if (newLine.indexOf('#EXT') !== 0) { + this.trigger('data', { + type: 'comment', + text: newLine.slice(1) + }); + return; + } // strip off any carriage returns here so the regex matching + // doesn't have to account for them. - var i = 0; - while (i < bytes.length) { - if ((0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes.subarray(i, i + name.length), name)) { - var size = (bytes[i - 4] << 24 | bytes[i - 3] << 16 | bytes[i - 2] << 8 | bytes[i - 1]) >>> 0; - var end = size > 1 ? i + size : bytes.byteLength; - return bytes.subarray(i + 4, end); - } + newLine = newLine.replace('\r', ''); // Tags - i++; - } // we've finished searching all of bytes + match = /^#EXTM3U/.exec(newLine); + if (match) { + this.trigger('data', { + type: 'tag', + tagType: 'm3u' + }); + return; + } - return bytes.subarray(bytes.length); -}; + match = /^#EXTINF:([0-9\.]*)?,?(.*)?$/.exec(newLine); -var parseSamples = function parseSamples(data, entrySize, parseEntry) { - if (entrySize === void 0) { - entrySize = 4; - } + if (match) { + event = { + type: 'tag', + tagType: 'inf' + }; - if (parseEntry === void 0) { - parseEntry = function parseEntry(d) { - return (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(d); - }; - } + if (match[1]) { + event.duration = parseFloat(match[1]); + } - var entries = []; + if (match[2]) { + event.title = match[2]; + } - if (!data || !data.length) { - return entries; - } + this.trigger('data', event); + return; + } - var entryCount = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(data.subarray(4, 8)); + match = /^#EXT-X-TARGETDURATION:([0-9.]*)?/.exec(newLine); - for (var i = 8; entryCount; i += entrySize, entryCount--) { - entries.push(parseEntry(data.subarray(i, i + entrySize))); - } + if (match) { + event = { + type: 'tag', + tagType: 'targetduration' + }; - return entries; -}; + if (match[1]) { + event.duration = parseInt(match[1], 10); + } -var buildFrameTable = function buildFrameTable(stbl, timescale) { - var keySamples = parseSamples(findBox(stbl, ['stss'])[0]); - var chunkOffsets = parseSamples(findBox(stbl, ['stco'])[0]); - var timeToSamples = parseSamples(findBox(stbl, ['stts'])[0], 8, function (entry) { - return { - sampleCount: (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(entry.subarray(0, 4)), - sampleDelta: (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(entry.subarray(4, 8)) - }; - }); - var samplesToChunks = parseSamples(findBox(stbl, ['stsc'])[0], 12, function (entry) { - return { - firstChunk: (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(entry.subarray(0, 4)), - samplesPerChunk: (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(entry.subarray(4, 8)), - sampleDescriptionIndex: (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(entry.subarray(8, 12)) - }; - }); - var stsz = findBox(stbl, ['stsz'])[0]; // stsz starts with a 4 byte sampleSize which we don't need + this.trigger('data', event); + return; + } - var sampleSizes = parseSamples(stsz && stsz.length && stsz.subarray(4) || null); - var frames = []; + match = /^#EXT-X-VERSION:([0-9.]*)?/.exec(newLine); - for (var chunkIndex = 0; chunkIndex < chunkOffsets.length; chunkIndex++) { - var samplesInChunk = void 0; + if (match) { + event = { + type: 'tag', + tagType: 'version' + }; - for (var i = 0; i < samplesToChunks.length; i++) { - var sampleToChunk = samplesToChunks[i]; - var isThisOne = chunkIndex + 1 >= sampleToChunk.firstChunk && (i + 1 >= samplesToChunks.length || chunkIndex + 1 < samplesToChunks[i + 1].firstChunk); + if (match[1]) { + event.version = parseInt(match[1], 10); + } - if (isThisOne) { - samplesInChunk = sampleToChunk.samplesPerChunk; - break; + this.trigger('data', event); + return; } - } - var chunkOffset = chunkOffsets[chunkIndex]; + match = /^#EXT-X-MEDIA-SEQUENCE:(\-?[0-9.]*)?/.exec(newLine); - for (var _i = 0; _i < samplesInChunk; _i++) { - var frameEnd = sampleSizes[frames.length]; // if we don't have key samples every frame is a keyframe + if (match) { + event = { + type: 'tag', + tagType: 'media-sequence' + }; - var keyframe = !keySamples.length; + if (match[1]) { + event.number = parseInt(match[1], 10); + } - if (keySamples.length && keySamples.indexOf(frames.length + 1) !== -1) { - keyframe = true; + this.trigger('data', event); + return; } - var frame = { - keyframe: keyframe, - start: chunkOffset, - end: chunkOffset + frameEnd - }; + match = /^#EXT-X-DISCONTINUITY-SEQUENCE:(\-?[0-9.]*)?/.exec(newLine); - for (var k = 0; k < timeToSamples.length; k++) { - var _timeToSamples$k = timeToSamples[k], - sampleCount = _timeToSamples$k.sampleCount, - sampleDelta = _timeToSamples$k.sampleDelta; + if (match) { + event = { + type: 'tag', + tagType: 'discontinuity-sequence' + }; - if (frames.length <= sampleCount) { - // ms to ns - var lastTimestamp = frames.length ? frames[frames.length - 1].timestamp : 0; - frame.timestamp = lastTimestamp + sampleDelta / timescale * 1000; - frame.duration = sampleDelta; - break; + if (match[1]) { + event.number = parseInt(match[1], 10); } + + this.trigger('data', event); + return; } - frames.push(frame); - chunkOffset += frameEnd; - } - } + match = /^#EXT-X-PLAYLIST-TYPE:(.*)?$/.exec(newLine); - return frames; -}; -var addSampleDescription = function addSampleDescription(track, bytes) { - var codec = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToString)(bytes.subarray(0, 4)); + if (match) { + event = { + type: 'tag', + tagType: 'playlist-type' + }; - if (track.type === 'video') { - track.info = track.info || {}; - track.info.width = bytes[28] << 8 | bytes[29]; - track.info.height = bytes[30] << 8 | bytes[31]; - } else if (track.type === 'audio') { - track.info = track.info || {}; - track.info.channels = bytes[20] << 8 | bytes[21]; - track.info.bitDepth = bytes[22] << 8 | bytes[23]; - track.info.sampleRate = bytes[28] << 8 | bytes[29]; - } + if (match[1]) { + event.playlistType = match[1]; + } - if (codec === 'avc1') { - var avcC = findNamedBox(bytes, 'avcC'); // AVCDecoderConfigurationRecord + this.trigger('data', event); + return; + } - codec += "." + (0,_codec_helpers_js__WEBPACK_IMPORTED_MODULE_1__.getAvcCodec)(avcC); - track.info.avcC = avcC; // TODO: do we need to parse all this? + match = /^#EXT-X-BYTERANGE:(.*)?$/.exec(newLine); - /* { - configurationVersion: avcC[0], - profile: avcC[1], - profileCompatibility: avcC[2], - level: avcC[3], - lengthSizeMinusOne: avcC[4] & 0x3 - }; - let spsNalUnitCount = avcC[5] & 0x1F; - const spsNalUnits = track.info.avc.spsNalUnits = []; - // past spsNalUnitCount - let offset = 6; - while (spsNalUnitCount--) { - const nalLen = avcC[offset] << 8 | avcC[offset + 1]; - spsNalUnits.push(avcC.subarray(offset + 2, offset + 2 + nalLen)); - offset += nalLen + 2; - } - let ppsNalUnitCount = avcC[offset]; - const ppsNalUnits = track.info.avc.ppsNalUnits = []; - // past ppsNalUnitCount - offset += 1; - while (ppsNalUnitCount--) { - const nalLen = avcC[offset] << 8 | avcC[offset + 1]; - ppsNalUnits.push(avcC.subarray(offset + 2, offset + 2 + nalLen)); - offset += nalLen + 2; - }*/ - // HEVCDecoderConfigurationRecord - } else if (codec === 'hvc1' || codec === 'hev1') { - codec += "." + (0,_codec_helpers_js__WEBPACK_IMPORTED_MODULE_1__.getHvcCodec)(findNamedBox(bytes, 'hvcC')); - } else if (codec === 'mp4a' || codec === 'mp4v') { - var esds = findNamedBox(bytes, 'esds'); - var esDescriptor = parseDescriptors(esds.subarray(4))[0]; - var decoderConfig = esDescriptor && esDescriptor.descriptors.filter(function (_ref) { - var tag = _ref.tag; - return tag === 0x04; - })[0]; + if (match) { + event = (0,_babel_runtime_helpers_extends__WEBPACK_IMPORTED_MODULE_1__["default"])(parseByterange(match[1]), { + type: 'tag', + tagType: 'byterange' + }); + this.trigger('data', event); + return; + } - if (decoderConfig) { - // most codecs do not have a further '.' - // such as 0xa5 for ac-3 and 0xa6 for e-ac-3 - codec += '.' + (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toHexString)(decoderConfig.oti); + match = /^#EXT-X-ALLOW-CACHE:(YES|NO)?/.exec(newLine); - if (decoderConfig.oti === 0x40) { - codec += '.' + (decoderConfig.descriptors[0].bytes[0] >> 3).toString(); - } else if (decoderConfig.oti === 0x20) { - codec += '.' + decoderConfig.descriptors[0].bytes[4].toString(); - } else if (decoderConfig.oti === 0xdd) { - codec = 'vorbis'; + if (match) { + event = { + type: 'tag', + tagType: 'allow-cache' + }; + + if (match[1]) { + event.allowed = !/NO/.test(match[1]); + } + + this.trigger('data', event); + return; } - } else if (track.type === 'audio') { - codec += '.40.2'; - } else { - codec += '.20.9'; - } - } else if (codec === 'av01') { - // AV1DecoderConfigurationRecord - codec += "." + (0,_codec_helpers_js__WEBPACK_IMPORTED_MODULE_1__.getAv1Codec)(findNamedBox(bytes, 'av1C')); - } else if (codec === 'vp09') { - // VPCodecConfigurationRecord - var vpcC = findNamedBox(bytes, 'vpcC'); // https://www.webmproject.org/vp9/mp4/ - var profile = vpcC[0]; - var level = vpcC[1]; - var bitDepth = vpcC[2] >> 4; - var chromaSubsampling = (vpcC[2] & 0x0F) >> 1; - var videoFullRangeFlag = (vpcC[2] & 0x0F) >> 3; - var colourPrimaries = vpcC[3]; - var transferCharacteristics = vpcC[4]; - var matrixCoefficients = vpcC[5]; - codec += "." + (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.padStart)(profile, 2, '0'); - codec += "." + (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.padStart)(level, 2, '0'); - codec += "." + (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.padStart)(bitDepth, 2, '0'); - codec += "." + (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.padStart)(chromaSubsampling, 2, '0'); - codec += "." + (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.padStart)(colourPrimaries, 2, '0'); - codec += "." + (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.padStart)(transferCharacteristics, 2, '0'); - codec += "." + (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.padStart)(matrixCoefficients, 2, '0'); - codec += "." + (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.padStart)(videoFullRangeFlag, 2, '0'); - } else if (codec === 'theo') { - codec = 'theora'; - } else if (codec === 'spex') { - codec = 'speex'; - } else if (codec === '.mp3') { - codec = 'mp4a.40.34'; - } else if (codec === 'msVo') { - codec = 'vorbis'; - } else if (codec === 'Opus') { - codec = 'opus'; - var dOps = findNamedBox(bytes, 'dOps'); - track.info.opus = (0,_opus_helpers_js__WEBPACK_IMPORTED_MODULE_2__.parseOpusHead)(dOps); // TODO: should this go into the webm code?? - // Firefox requires a codecDelay for opus playback - // see https://bugzilla.mozilla.org/show_bug.cgi?id=1276238 + match = /^#EXT-X-MAP:(.*)$/.exec(newLine); - track.info.codecDelay = 6500000; - } else { - codec = codec.toLowerCase(); - } - /* eslint-enable */ - // flac, ac-3, ec-3, opus + if (match) { + event = { + type: 'tag', + tagType: 'map' + }; + if (match[1]) { + const attributes = parseAttributes(match[1]); - track.codec = codec; -}; -var parseTracks = function parseTracks(bytes, frameTable) { - if (frameTable === void 0) { - frameTable = true; - } + if (attributes.URI) { + event.uri = attributes.URI; + } - bytes = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)(bytes); - var traks = findBox(bytes, ['moov', 'trak'], true); - var tracks = []; - traks.forEach(function (trak) { - var track = { - bytes: trak - }; - var mdia = findBox(trak, ['mdia'])[0]; - var hdlr = findBox(mdia, ['hdlr'])[0]; - var trakType = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToString)(hdlr.subarray(8, 12)); + if (attributes.BYTERANGE) { + event.byterange = parseByterange(attributes.BYTERANGE); + } + } - if (trakType === 'soun') { - track.type = 'audio'; - } else if (trakType === 'vide') { - track.type = 'video'; - } else { - track.type = trakType; - } + this.trigger('data', event); + return; + } - var tkhd = findBox(trak, ['tkhd'])[0]; + match = /^#EXT-X-STREAM-INF:(.*)$/.exec(newLine); - if (tkhd) { - var view = new DataView(tkhd.buffer, tkhd.byteOffset, tkhd.byteLength); - var tkhdVersion = view.getUint8(0); - track.number = tkhdVersion === 0 ? view.getUint32(12) : view.getUint32(20); - } + if (match) { + event = { + type: 'tag', + tagType: 'stream-inf' + }; - var mdhd = findBox(mdia, ['mdhd'])[0]; + if (match[1]) { + event.attributes = parseAttributes(match[1]); - if (mdhd) { - // mdhd is a FullBox, meaning it will have its own version as the first byte - var version = mdhd[0]; - var index = version === 0 ? 12 : 20; - track.timescale = (mdhd[index] << 24 | mdhd[index + 1] << 16 | mdhd[index + 2] << 8 | mdhd[index + 3]) >>> 0; - } + if (event.attributes.RESOLUTION) { + const split = event.attributes.RESOLUTION.split('x'); + const resolution = {}; - var stbl = findBox(mdia, ['minf', 'stbl'])[0]; - var stsd = findBox(stbl, ['stsd'])[0]; - var descriptionCount = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(stsd.subarray(4, 8)); - var offset = 8; // add codec and codec info + if (split[0]) { + resolution.width = parseInt(split[0], 10); + } - while (descriptionCount--) { - var len = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(stsd.subarray(offset, offset + 4)); - var sampleDescriptor = stsd.subarray(offset + 4, offset + 4 + len); - addSampleDescription(track, sampleDescriptor); - offset += 4 + len; - } + if (split[1]) { + resolution.height = parseInt(split[1], 10); + } - if (frameTable) { - track.frameTable = buildFrameTable(stbl, track.timescale); - } // codec has no sub parameters + event.attributes.RESOLUTION = resolution; + } + if (event.attributes.BANDWIDTH) { + event.attributes.BANDWIDTH = parseInt(event.attributes.BANDWIDTH, 10); + } - tracks.push(track); - }); - return tracks; -}; -var parseMediaInfo = function parseMediaInfo(bytes) { - var mvhd = findBox(bytes, ['moov', 'mvhd'], true)[0]; + if (event.attributes['FRAME-RATE']) { + event.attributes['FRAME-RATE'] = parseFloat(event.attributes['FRAME-RATE']); + } - if (!mvhd || !mvhd.length) { - return; - } + if (event.attributes['PROGRAM-ID']) { + event.attributes['PROGRAM-ID'] = parseInt(event.attributes['PROGRAM-ID'], 10); + } + } - var info = {}; // ms to ns - // mvhd v1 has 8 byte duration and other fields too + this.trigger('data', event); + return; + } - if (mvhd[0] === 1) { - info.timestampScale = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(mvhd.subarray(20, 24)); - info.duration = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(mvhd.subarray(24, 32)); - } else { - info.timestampScale = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(mvhd.subarray(12, 16)); - info.duration = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(mvhd.subarray(16, 20)); - } + match = /^#EXT-X-MEDIA:(.*)$/.exec(newLine); - info.bytes = mvhd; - return info; -}; + if (match) { + event = { + type: 'tag', + tagType: 'media' + }; -/***/ }), + if (match[1]) { + event.attributes = parseAttributes(match[1]); + } -/***/ "./node_modules/@videojs/vhs-utils/es/nal-helpers.js": -/*!***********************************************************!*\ - !*** ./node_modules/@videojs/vhs-utils/es/nal-helpers.js ***! - \***********************************************************/ -/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { + this.trigger('data', event); + return; + } -"use strict"; -__webpack_require__.r(__webpack_exports__); -/* harmony export */ __webpack_require__.d(__webpack_exports__, { -/* harmony export */ EMULATION_PREVENTION: () => (/* binding */ EMULATION_PREVENTION), -/* harmony export */ NAL_TYPE_ONE: () => (/* binding */ NAL_TYPE_ONE), -/* harmony export */ NAL_TYPE_TWO: () => (/* binding */ NAL_TYPE_TWO), -/* harmony export */ discardEmulationPreventionBytes: () => (/* binding */ discardEmulationPreventionBytes), -/* harmony export */ findH264Nal: () => (/* binding */ findH264Nal), -/* harmony export */ findH265Nal: () => (/* binding */ findH265Nal), -/* harmony export */ findNal: () => (/* binding */ findNal) -/* harmony export */ }); -/* harmony import */ var _byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./byte-helpers.js */ "./node_modules/@videojs/vhs-utils/es/byte-helpers.js"); - -var NAL_TYPE_ONE = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x00, 0x00, 0x00, 0x01]); -var NAL_TYPE_TWO = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x00, 0x00, 0x01]); -var EMULATION_PREVENTION = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x00, 0x00, 0x03]); -/** - * Expunge any "Emulation Prevention" bytes from a "Raw Byte - * Sequence Payload" - * - * @param data {Uint8Array} the bytes of a RBSP from a NAL - * unit - * @return {Uint8Array} the RBSP without any Emulation - * Prevention Bytes - */ - -var discardEmulationPreventionBytes = function discardEmulationPreventionBytes(bytes) { - var positions = []; - var i = 1; // Find all `Emulation Prevention Bytes` + match = /^#EXT-X-ENDLIST/.exec(newLine); - while (i < bytes.length - 2) { - if ((0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes.subarray(i, i + 3), EMULATION_PREVENTION)) { - positions.push(i + 2); - i++; - } + if (match) { + this.trigger('data', { + type: 'tag', + tagType: 'endlist' + }); + return; + } - i++; - } // If no Emulation Prevention Bytes were found just return the original - // array + match = /^#EXT-X-DISCONTINUITY/.exec(newLine); + if (match) { + this.trigger('data', { + type: 'tag', + tagType: 'discontinuity' + }); + return; + } - if (positions.length === 0) { - return bytes; - } // Create a new array to hold the NAL unit data + match = /^#EXT-X-PROGRAM-DATE-TIME:(.*)$/.exec(newLine); + if (match) { + event = { + type: 'tag', + tagType: 'program-date-time' + }; - var newLength = bytes.length - positions.length; - var newData = new Uint8Array(newLength); - var sourceIndex = 0; + if (match[1]) { + event.dateTimeString = match[1]; + event.dateTimeObject = new Date(match[1]); + } - for (i = 0; i < newLength; sourceIndex++, i++) { - if (sourceIndex === positions[0]) { - // Skip this byte - sourceIndex++; // Remove this position index + this.trigger('data', event); + return; + } - positions.shift(); - } + match = /^#EXT-X-KEY:(.*)$/.exec(newLine); - newData[i] = bytes[sourceIndex]; - } + if (match) { + event = { + type: 'tag', + tagType: 'key' + }; - return newData; -}; -var findNal = function findNal(bytes, dataType, types, nalLimit) { - if (nalLimit === void 0) { - nalLimit = Infinity; - } + if (match[1]) { + event.attributes = parseAttributes(match[1]); // parse the IV string into a Uint32Array - bytes = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)(bytes); - types = [].concat(types); - var i = 0; - var nalStart; - var nalsFound = 0; // keep searching until: - // we reach the end of bytes - // we reach the maximum number of nals they want to seach - // NOTE: that we disregard nalLimit when we have found the start - // of the nal we want so that we can find the end of the nal we want. + if (event.attributes.IV) { + if (event.attributes.IV.substring(0, 2).toLowerCase() === '0x') { + event.attributes.IV = event.attributes.IV.substring(2); + } - while (i < bytes.length && (nalsFound < nalLimit || nalStart)) { - var nalOffset = void 0; + event.attributes.IV = event.attributes.IV.match(/.{8}/g); + event.attributes.IV[0] = parseInt(event.attributes.IV[0], 16); + event.attributes.IV[1] = parseInt(event.attributes.IV[1], 16); + event.attributes.IV[2] = parseInt(event.attributes.IV[2], 16); + event.attributes.IV[3] = parseInt(event.attributes.IV[3], 16); + event.attributes.IV = new Uint32Array(event.attributes.IV); + } + } - if ((0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes.subarray(i), NAL_TYPE_ONE)) { - nalOffset = 4; - } else if ((0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes.subarray(i), NAL_TYPE_TWO)) { - nalOffset = 3; - } // we are unsynced, - // find the next nal unit + this.trigger('data', event); + return; + } + match = /^#EXT-X-START:(.*)$/.exec(newLine); - if (!nalOffset) { - i++; - continue; - } + if (match) { + event = { + type: 'tag', + tagType: 'start' + }; - nalsFound++; + if (match[1]) { + event.attributes = parseAttributes(match[1]); + event.attributes['TIME-OFFSET'] = parseFloat(event.attributes['TIME-OFFSET']); + event.attributes.PRECISE = /YES/.test(event.attributes.PRECISE); + } - if (nalStart) { - return discardEmulationPreventionBytes(bytes.subarray(nalStart, i)); - } + this.trigger('data', event); + return; + } - var nalType = void 0; + match = /^#EXT-X-CUE-OUT-CONT:(.*)?$/.exec(newLine); - if (dataType === 'h264') { - nalType = bytes[i + nalOffset] & 0x1f; - } else if (dataType === 'h265') { - nalType = bytes[i + nalOffset] >> 1 & 0x3f; - } + if (match) { + event = { + type: 'tag', + tagType: 'cue-out-cont' + }; - if (types.indexOf(nalType) !== -1) { - nalStart = i + nalOffset; - } // nal header is 1 length for h264, and 2 for h265 + if (match[1]) { + event.data = match[1]; + } else { + event.data = ''; + } + this.trigger('data', event); + return; + } - i += nalOffset + (dataType === 'h264' ? 1 : 2); - } + match = /^#EXT-X-CUE-OUT:(.*)?$/.exec(newLine); - return bytes.subarray(0, 0); -}; -var findH264Nal = function findH264Nal(bytes, type, nalLimit) { - return findNal(bytes, 'h264', type, nalLimit); -}; -var findH265Nal = function findH265Nal(bytes, type, nalLimit) { - return findNal(bytes, 'h265', type, nalLimit); -}; + if (match) { + event = { + type: 'tag', + tagType: 'cue-out' + }; -/***/ }), + if (match[1]) { + event.data = match[1]; + } else { + event.data = ''; + } -/***/ "./node_modules/@videojs/vhs-utils/es/opus-helpers.js": -/*!************************************************************!*\ - !*** ./node_modules/@videojs/vhs-utils/es/opus-helpers.js ***! - \************************************************************/ -/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { + this.trigger('data', event); + return; + } -"use strict"; -__webpack_require__.r(__webpack_exports__); -/* harmony export */ __webpack_require__.d(__webpack_exports__, { -/* harmony export */ OPUS_HEAD: () => (/* binding */ OPUS_HEAD), -/* harmony export */ parseOpusHead: () => (/* binding */ parseOpusHead), -/* harmony export */ setOpusHead: () => (/* binding */ setOpusHead) -/* harmony export */ }); -var OPUS_HEAD = new Uint8Array([// O, p, u, s -0x4f, 0x70, 0x75, 0x73, // H, e, a, d -0x48, 0x65, 0x61, 0x64]); // https://wiki.xiph.org/OggOpus -// https://vfrmaniac.fushizen.eu/contents/opus_in_isobmff.html -// https://opus-codec.org/docs/opusfile_api-0.7/structOpusHead.html + match = /^#EXT-X-CUE-IN:(.*)?$/.exec(newLine); -var parseOpusHead = function parseOpusHead(bytes) { - var view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength); - var version = view.getUint8(0); // version 0, from mp4, does not use littleEndian. + if (match) { + event = { + type: 'tag', + tagType: 'cue-in' + }; - var littleEndian = version !== 0; - var config = { - version: version, - channels: view.getUint8(1), - preSkip: view.getUint16(2, littleEndian), - sampleRate: view.getUint32(4, littleEndian), - outputGain: view.getUint16(8, littleEndian), - channelMappingFamily: view.getUint8(10) - }; + if (match[1]) { + event.data = match[1]; + } else { + event.data = ''; + } - if (config.channelMappingFamily > 0 && bytes.length > 10) { - config.streamCount = view.getUint8(11); - config.twoChannelStreamCount = view.getUint8(12); - config.channelMapping = []; + this.trigger('data', event); + return; + } - for (var c = 0; c < config.channels; c++) { - config.channelMapping.push(view.getUint8(13 + c)); - } - } + match = /^#EXT-X-SKIP:(.*)$/.exec(newLine); - return config; -}; -var setOpusHead = function setOpusHead(config) { - var size = config.channelMappingFamily <= 0 ? 11 : 12 + config.channels; - var view = new DataView(new ArrayBuffer(size)); - var littleEndian = config.version !== 0; - view.setUint8(0, config.version); - view.setUint8(1, config.channels); - view.setUint16(2, config.preSkip, littleEndian); - view.setUint32(4, config.sampleRate, littleEndian); - view.setUint16(8, config.outputGain, littleEndian); - view.setUint8(10, config.channelMappingFamily); + if (match && match[1]) { + event = { + type: 'tag', + tagType: 'skip' + }; + event.attributes = parseAttributes(match[1]); - if (config.channelMappingFamily > 0) { - view.setUint8(11, config.streamCount); - config.channelMapping.foreach(function (cm, i) { - view.setUint8(12 + i, cm); - }); - } + if (event.attributes.hasOwnProperty('SKIPPED-SEGMENTS')) { + event.attributes['SKIPPED-SEGMENTS'] = parseInt(event.attributes['SKIPPED-SEGMENTS'], 10); + } - return new Uint8Array(view.buffer); -}; + if (event.attributes.hasOwnProperty('RECENTLY-REMOVED-DATERANGES')) { + event.attributes['RECENTLY-REMOVED-DATERANGES'] = event.attributes['RECENTLY-REMOVED-DATERANGES'].split(TAB); + } -/***/ }), + this.trigger('data', event); + return; + } -/***/ "./node_modules/@videojs/vhs-utils/es/resolve-url.js": -/*!***********************************************************!*\ - !*** ./node_modules/@videojs/vhs-utils/es/resolve-url.js ***! - \***********************************************************/ -/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { + match = /^#EXT-X-PART:(.*)$/.exec(newLine); -"use strict"; -__webpack_require__.r(__webpack_exports__); -/* harmony export */ __webpack_require__.d(__webpack_exports__, { -/* harmony export */ "default": () => (__WEBPACK_DEFAULT_EXPORT__) -/* harmony export */ }); -/* harmony import */ var url_toolkit__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! url-toolkit */ "./node_modules/url-toolkit/src/url-toolkit.js"); -/* harmony import */ var url_toolkit__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(url_toolkit__WEBPACK_IMPORTED_MODULE_0__); -/* harmony import */ var global_window__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! global/window */ "./node_modules/global/window.js"); -/* harmony import */ var global_window__WEBPACK_IMPORTED_MODULE_1___default = /*#__PURE__*/__webpack_require__.n(global_window__WEBPACK_IMPORTED_MODULE_1__); + if (match && match[1]) { + event = { + type: 'tag', + tagType: 'part' + }; + event.attributes = parseAttributes(match[1]); + ['DURATION'].forEach(function (key) { + if (event.attributes.hasOwnProperty(key)) { + event.attributes[key] = parseFloat(event.attributes[key]); + } + }); + ['INDEPENDENT', 'GAP'].forEach(function (key) { + if (event.attributes.hasOwnProperty(key)) { + event.attributes[key] = /YES/.test(event.attributes[key]); + } + }); + if (event.attributes.hasOwnProperty('BYTERANGE')) { + event.attributes.byterange = parseByterange(event.attributes.BYTERANGE); + } -var DEFAULT_LOCATION = 'http://example.com'; + this.trigger('data', event); + return; + } -var resolveUrl = function resolveUrl(baseUrl, relativeUrl) { - // return early if we don't need to resolve - if (/^[a-z]+:/i.test(relativeUrl)) { - return relativeUrl; - } // if baseUrl is a data URI, ignore it and resolve everything relative to window.location + match = /^#EXT-X-SERVER-CONTROL:(.*)$/.exec(newLine); + if (match && match[1]) { + event = { + type: 'tag', + tagType: 'server-control' + }; + event.attributes = parseAttributes(match[1]); + ['CAN-SKIP-UNTIL', 'PART-HOLD-BACK', 'HOLD-BACK'].forEach(function (key) { + if (event.attributes.hasOwnProperty(key)) { + event.attributes[key] = parseFloat(event.attributes[key]); + } + }); + ['CAN-SKIP-DATERANGES', 'CAN-BLOCK-RELOAD'].forEach(function (key) { + if (event.attributes.hasOwnProperty(key)) { + event.attributes[key] = /YES/.test(event.attributes[key]); + } + }); + this.trigger('data', event); + return; + } - if (/^data:/.test(baseUrl)) { - baseUrl = (global_window__WEBPACK_IMPORTED_MODULE_1___default().location) && (global_window__WEBPACK_IMPORTED_MODULE_1___default().location).href || ''; - } // IE11 supports URL but not the URL constructor - // feature detect the behavior we want + match = /^#EXT-X-PART-INF:(.*)$/.exec(newLine); + if (match && match[1]) { + event = { + type: 'tag', + tagType: 'part-inf' + }; + event.attributes = parseAttributes(match[1]); + ['PART-TARGET'].forEach(function (key) { + if (event.attributes.hasOwnProperty(key)) { + event.attributes[key] = parseFloat(event.attributes[key]); + } + }); + this.trigger('data', event); + return; + } - var nativeURL = typeof (global_window__WEBPACK_IMPORTED_MODULE_1___default().URL) === 'function'; - var protocolLess = /^\/\//.test(baseUrl); // remove location if window.location isn't available (i.e. we're in node) - // and if baseUrl isn't an absolute url + match = /^#EXT-X-PRELOAD-HINT:(.*)$/.exec(newLine); - var removeLocation = !(global_window__WEBPACK_IMPORTED_MODULE_1___default().location) && !/\/\//i.test(baseUrl); // if the base URL is relative then combine with the current location + if (match && match[1]) { + event = { + type: 'tag', + tagType: 'preload-hint' + }; + event.attributes = parseAttributes(match[1]); + ['BYTERANGE-START', 'BYTERANGE-LENGTH'].forEach(function (key) { + if (event.attributes.hasOwnProperty(key)) { + event.attributes[key] = parseInt(event.attributes[key], 10); + const subkey = key === 'BYTERANGE-LENGTH' ? 'length' : 'offset'; + event.attributes.byterange = event.attributes.byterange || {}; + event.attributes.byterange[subkey] = event.attributes[key]; // only keep the parsed byterange object. - if (nativeURL) { - baseUrl = new (global_window__WEBPACK_IMPORTED_MODULE_1___default().URL)(baseUrl, (global_window__WEBPACK_IMPORTED_MODULE_1___default().location) || DEFAULT_LOCATION); - } else if (!/\/\//i.test(baseUrl)) { - baseUrl = url_toolkit__WEBPACK_IMPORTED_MODULE_0___default().buildAbsoluteURL((global_window__WEBPACK_IMPORTED_MODULE_1___default().location) && (global_window__WEBPACK_IMPORTED_MODULE_1___default().location).href || '', baseUrl); - } + delete event.attributes[key]; + } + }); + this.trigger('data', event); + return; + } - if (nativeURL) { - var newUrl = new URL(relativeUrl, baseUrl); // if we're a protocol-less url, remove the protocol - // and if we're location-less, remove the location - // otherwise, return the url unmodified + match = /^#EXT-X-RENDITION-REPORT:(.*)$/.exec(newLine); - if (removeLocation) { - return newUrl.href.slice(DEFAULT_LOCATION.length); - } else if (protocolLess) { - return newUrl.href.slice(newUrl.protocol.length); - } + if (match && match[1]) { + event = { + type: 'tag', + tagType: 'rendition-report' + }; + event.attributes = parseAttributes(match[1]); + ['LAST-MSN', 'LAST-PART'].forEach(function (key) { + if (event.attributes.hasOwnProperty(key)) { + event.attributes[key] = parseInt(event.attributes[key], 10); + } + }); + this.trigger('data', event); + return; + } - return newUrl.href; - } + match = /^#EXT-X-DATERANGE:(.*)$/.exec(newLine); - return url_toolkit__WEBPACK_IMPORTED_MODULE_0___default().buildAbsoluteURL(baseUrl, relativeUrl); -}; + if (match && match[1]) { + event = { + type: 'tag', + tagType: 'daterange' + }; + event.attributes = parseAttributes(match[1]); + ['ID', 'CLASS'].forEach(function (key) { + if (event.attributes.hasOwnProperty(key)) { + event.attributes[key] = String(event.attributes[key]); + } + }); + ['START-DATE', 'END-DATE'].forEach(function (key) { + if (event.attributes.hasOwnProperty(key)) { + event.attributes[key] = new Date(event.attributes[key]); + } + }); + ['DURATION', 'PLANNED-DURATION'].forEach(function (key) { + if (event.attributes.hasOwnProperty(key)) { + event.attributes[key] = parseFloat(event.attributes[key]); + } + }); + ['END-ON-NEXT'].forEach(function (key) { + if (event.attributes.hasOwnProperty(key)) { + event.attributes[key] = /YES/i.test(event.attributes[key]); + } + }); + ['SCTE35-CMD', ' SCTE35-OUT', 'SCTE35-IN'].forEach(function (key) { + if (event.attributes.hasOwnProperty(key)) { + event.attributes[key] = event.attributes[key].toString(16); + } + }); + const clientAttributePattern = /^X-([A-Z]+-)+[A-Z]+$/; -/* harmony default export */ const __WEBPACK_DEFAULT_EXPORT__ = (resolveUrl); + for (const key in event.attributes) { + if (!clientAttributePattern.test(key)) { + continue; + } -/***/ }), + const isHexaDecimal = /[0-9A-Fa-f]{6}/g.test(event.attributes[key]); + const isDecimalFloating = /^\d+(\.\d+)?$/.test(event.attributes[key]); + event.attributes[key] = isHexaDecimal ? event.attributes[key].toString(16) : isDecimalFloating ? parseFloat(event.attributes[key]) : String(event.attributes[key]); + } -/***/ "./node_modules/@videojs/xhr/lib/http-handler.js": -/*!*******************************************************!*\ - !*** ./node_modules/@videojs/xhr/lib/http-handler.js ***! - \*******************************************************/ -/***/ ((module, __unused_webpack_exports, __webpack_require__) => { + this.trigger('data', event); + return; + } -"use strict"; + match = /^#EXT-X-INDEPENDENT-SEGMENTS/.exec(newLine); + if (match) { + this.trigger('data', { + type: 'tag', + tagType: 'independent-segments' + }); + return; + } // unknown tag type -var window = __webpack_require__(/*! global/window */ "./node_modules/global/window.js"); -var httpResponseHandler = function httpResponseHandler(callback, decodeResponseBody) { - if (decodeResponseBody === void 0) { - decodeResponseBody = false; + this.trigger('data', { + type: 'tag', + data: newLine.slice(4) + }); + }); } + /** + * Add a parser for custom headers + * + * @param {Object} options a map of options for the added parser + * @param {RegExp} options.expression a regular expression to match the custom header + * @param {string} options.customType the custom type to register to the output + * @param {Function} [options.dataParser] function to parse the line into an object + * @param {boolean} [options.segment] should tag data be attached to the segment object + */ - return function (err, response, responseBody) { - // if the XHR failed, return that error - if (err) { - callback(err); - return; - } // if the HTTP status code is 4xx or 5xx, the request also failed + addParser({ + expression, + customType, + dataParser, + segment + }) { + if (typeof dataParser !== 'function') { + dataParser = line => line; + } - if (response.statusCode >= 400 && response.statusCode <= 599) { - var cause = responseBody; - - if (decodeResponseBody) { - if (window.TextDecoder) { - var charset = getCharset(response.headers && response.headers['content-type']); + this.customParsers.push(line => { + const match = expression.exec(line); - try { - cause = new TextDecoder(charset).decode(responseBody); - } catch (e) {} - } else { - cause = String.fromCharCode.apply(null, new Uint8Array(responseBody)); - } + if (match) { + this.trigger('data', { + type: 'custom', + data: dataParser(line), + customType, + segment + }); + return true; } + }); + } + /** + * Add a custom header mapper + * + * @param {Object} options + * @param {RegExp} options.expression a regular expression to match the custom header + * @param {Function} options.map function to translate tag into a different tag + */ - callback({ - cause: cause - }); - return; - } // otherwise, request succeeded + addTagMapper({ + expression, + map + }) { + const mapFn = line => { + if (expression.test(line)) { + return map(line); + } - callback(null, responseBody); - }; -}; + return line; + }; -function getCharset(contentTypeHeader) { - if (contentTypeHeader === void 0) { - contentTypeHeader = ''; + this.tagMappers.push(mapFn); } - return contentTypeHeader.toLowerCase().split(';').reduce(function (charset, contentType) { - var _contentType$split = contentType.split('='), - type = _contentType$split[0], - value = _contentType$split[1]; +} - if (type.trim() === 'charset') { - return value.trim(); - } +const camelCase = str => str.toLowerCase().replace(/-(\w)/g, a => a[1].toUpperCase()); - return charset; - }, 'utf-8'); -} +const camelCaseKeys = function (attributes) { + const result = {}; + Object.keys(attributes).forEach(function (key) { + result[camelCase(key)] = attributes[key]; + }); + return result; +}; // set SERVER-CONTROL hold back based upon targetDuration and partTargetDuration +// we need this helper because defaults are based upon targetDuration and +// partTargetDuration being set, but they may not be if SERVER-CONTROL appears before +// target durations are set. -module.exports = httpResponseHandler; -/***/ }), +const setHoldBack = function (manifest) { + const { + serverControl, + targetDuration, + partTargetDuration + } = manifest; -/***/ "./node_modules/@videojs/xhr/lib/index.js": -/*!************************************************!*\ - !*** ./node_modules/@videojs/xhr/lib/index.js ***! - \************************************************/ -/***/ ((module, __unused_webpack_exports, __webpack_require__) => { + if (!serverControl) { + return; + } -"use strict"; + const tag = '#EXT-X-SERVER-CONTROL'; + const hb = 'holdBack'; + const phb = 'partHoldBack'; + const minTargetDuration = targetDuration && targetDuration * 3; + const minPartDuration = partTargetDuration && partTargetDuration * 2; + + if (targetDuration && !serverControl.hasOwnProperty(hb)) { + serverControl[hb] = minTargetDuration; + this.trigger('info', { + message: `${tag} defaulting HOLD-BACK to targetDuration * 3 (${minTargetDuration}).` + }); + } + if (minTargetDuration && serverControl[hb] < minTargetDuration) { + this.trigger('warn', { + message: `${tag} clamping HOLD-BACK (${serverControl[hb]}) to targetDuration * 3 (${minTargetDuration})` + }); + serverControl[hb] = minTargetDuration; + } // default no part hold back to part target duration * 3 -var window = __webpack_require__(/*! global/window */ "./node_modules/global/window.js"); -var _extends = __webpack_require__(/*! @babel/runtime/helpers/extends */ "./node_modules/@babel/runtime/helpers/extends.js"); + if (partTargetDuration && !serverControl.hasOwnProperty(phb)) { + serverControl[phb] = partTargetDuration * 3; + this.trigger('info', { + message: `${tag} defaulting PART-HOLD-BACK to partTargetDuration * 3 (${serverControl[phb]}).` + }); + } // if part hold back is too small default it to part target duration * 2 -var isFunction = __webpack_require__(/*! is-function */ "./node_modules/is-function/index.js"); -createXHR.httpHandler = __webpack_require__(/*! ./http-handler.js */ "./node_modules/@videojs/xhr/lib/http-handler.js"); + if (partTargetDuration && serverControl[phb] < minPartDuration) { + this.trigger('warn', { + message: `${tag} clamping PART-HOLD-BACK (${serverControl[phb]}) to partTargetDuration * 2 (${minPartDuration}).` + }); + serverControl[phb] = minPartDuration; + } +}; /** - * @license - * slighly modified parse-headers 2.0.2 - * Copyright (c) 2014 David Björklund - * Available under the MIT license - * + * A parser for M3U8 files. The current interpretation of the input is + * exposed as a property `manifest` on parser objects. It's just two lines to + * create and parse a manifest once you have the contents available as a string: + * + * ```js + * var parser = new m3u8.Parser(); + * parser.push(xhr.responseText); + * ``` + * + * New input can later be applied to update the manifest object by calling + * `push` again. + * + * The parser attempts to create a usable manifest object even if the + * underlying input is somewhat nonsensical. It emits `info` and `warning` + * events during the parse if it encounters input that seems invalid or + * requires some property of the manifest object to be defaulted. + * + * @class Parser + * @extends Stream */ -var parseHeaders = function parseHeaders(headers) { - var result = {}; - - if (!headers) { - return result; - } - headers.trim().split('\n').forEach(function (row) { - var index = row.indexOf(':'); - var key = row.slice(0, index).trim().toLowerCase(); - var value = row.slice(index + 1).trim(); +class Parser extends _videojs_vhs_utils_es_stream_js__WEBPACK_IMPORTED_MODULE_0__["default"] { + constructor() { + super(); + this.lineStream = new LineStream(); + this.parseStream = new ParseStream(); + this.lineStream.pipe(this.parseStream); + /* eslint-disable consistent-this */ - if (typeof result[key] === 'undefined') { - result[key] = value; - } else if (Array.isArray(result[key])) { - result[key].push(value); - } else { - result[key] = [result[key], value]; - } - }); - return result; -}; + const self = this; + /* eslint-enable consistent-this */ -module.exports = createXHR; // Allow use of default import syntax in TypeScript + const uris = []; + let currentUri = {}; // if specified, the active EXT-X-MAP definition -module.exports["default"] = createXHR; -createXHR.XMLHttpRequest = window.XMLHttpRequest || noop; -createXHR.XDomainRequest = "withCredentials" in new createXHR.XMLHttpRequest() ? createXHR.XMLHttpRequest : window.XDomainRequest; -forEachArray(["get", "put", "post", "patch", "head", "delete"], function (method) { - createXHR[method === "delete" ? "del" : method] = function (uri, options, callback) { - options = initParams(uri, options, callback); - options.method = method.toUpperCase(); - return _createXHR(options); - }; -}); + let currentMap; // if specified, the active decryption key -function forEachArray(array, iterator) { - for (var i = 0; i < array.length; i++) { - iterator(array[i]); - } -} + let key; + let hasParts = false; -function isEmpty(obj) { - for (var i in obj) { - if (obj.hasOwnProperty(i)) return false; - } + const noop = function () {}; - return true; -} + const defaultMediaGroups = { + 'AUDIO': {}, + 'VIDEO': {}, + 'CLOSED-CAPTIONS': {}, + 'SUBTITLES': {} + }; // This is the Widevine UUID from DASH IF IOP. The same exact string is + // used in MPDs with Widevine encrypted streams. -function initParams(uri, options, callback) { - var params = uri; + const widevineUuid = 'urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed'; // group segments into numbered timelines delineated by discontinuities - if (isFunction(options)) { - callback = options; + let currentTimeline = 0; // the manifest is empty until the parse stream begins delivering data - if (typeof uri === "string") { - params = { - uri: uri - }; - } - } else { - params = _extends({}, options, { - uri: uri - }); - } + this.manifest = { + allowCache: true, + discontinuityStarts: [], + segments: [] + }; // keep track of the last seen segment's byte range end, as segments are not required + // to provide the offset, in which case it defaults to the next byte after the + // previous segment - params.callback = callback; - return params; -} + let lastByterangeEnd = 0; // keep track of the last seen part's byte range end. -function createXHR(uri, options, callback) { - options = initParams(uri, options, callback); - return _createXHR(options); -} + let lastPartByterangeEnd = 0; + const daterangeTags = {}; + this.on('end', () => { + // only add preloadSegment if we don't yet have a uri for it. + // and we actually have parts/preloadHints + if (currentUri.uri || !currentUri.parts && !currentUri.preloadHints) { + return; + } -function _createXHR(options) { - if (typeof options.callback === "undefined") { - throw new Error("callback argument missing"); - } + if (!currentUri.map && currentMap) { + currentUri.map = currentMap; + } - var called = false; + if (!currentUri.key && key) { + currentUri.key = key; + } - var callback = function cbOnce(err, response, body) { - if (!called) { - called = true; - options.callback(err, response, body); - } - }; + if (!currentUri.timeline && typeof currentTimeline === 'number') { + currentUri.timeline = currentTimeline; + } - function readystatechange() { - if (xhr.readyState === 4) { - setTimeout(loadFunc, 0); - } - } + this.manifest.preloadSegment = currentUri; + }); // update the manifest with the m3u8 entry from the parse stream - function getBody() { - // Chrome with requestType=blob throws errors arround when even testing access to responseText - var body = undefined; + this.parseStream.on('data', function (entry) { + let mediaGroup; + let rendition; + ({ + tag() { + // switch based on the tag type + (({ + version() { + if (entry.version) { + this.manifest.version = entry.version; + } + }, - if (xhr.response) { - body = xhr.response; - } else { - body = xhr.responseText || getXml(xhr); - } + 'allow-cache'() { + this.manifest.allowCache = entry.allowed; - if (isJson) { - try { - body = JSON.parse(body); - } catch (e) {} - } + if (!('allowed' in entry)) { + this.trigger('info', { + message: 'defaulting allowCache to YES' + }); + this.manifest.allowCache = true; + } + }, - return body; - } + byterange() { + const byterange = {}; - function errorFunc(evt) { - clearTimeout(timeoutTimer); + if ('length' in entry) { + currentUri.byterange = byterange; + byterange.length = entry.length; - if (!(evt instanceof Error)) { - evt = new Error("" + (evt || "Unknown XMLHttpRequest Error")); - } + if (!('offset' in entry)) { + /* + * From the latest spec (as of this writing): + * https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.2.2 + * + * Same text since EXT-X-BYTERANGE's introduction in draft 7: + * https://tools.ietf.org/html/draft-pantos-http-live-streaming-07#section-3.3.1) + * + * "If o [offset] is not present, the sub-range begins at the next byte + * following the sub-range of the previous media segment." + */ + entry.offset = lastByterangeEnd; + } + } - evt.statusCode = 0; - return callback(evt, failureResponse); - } // will load the data & process the response in a special response object + if ('offset' in entry) { + currentUri.byterange = byterange; + byterange.offset = entry.offset; + } + lastByterangeEnd = byterange.offset + byterange.length; + }, - function loadFunc() { - if (aborted) return; - var status; - clearTimeout(timeoutTimer); + endlist() { + this.manifest.endList = true; + }, - if (options.useXDR && xhr.status === undefined) { - //IE8 CORS GET successful response doesn't have a status field, but body is fine - status = 200; - } else { - status = xhr.status === 1223 ? 204 : xhr.status; - } + inf() { + if (!('mediaSequence' in this.manifest)) { + this.manifest.mediaSequence = 0; + this.trigger('info', { + message: 'defaulting media sequence to zero' + }); + } - var response = failureResponse; - var err = null; + if (!('discontinuitySequence' in this.manifest)) { + this.manifest.discontinuitySequence = 0; + this.trigger('info', { + message: 'defaulting discontinuity sequence to zero' + }); + } - if (status !== 0) { - response = { - body: getBody(), - statusCode: status, - method: method, - headers: {}, - url: uri, - rawRequest: xhr - }; + if (entry.duration > 0) { + currentUri.duration = entry.duration; + } - if (xhr.getAllResponseHeaders) { - //remember xhr can in fact be XDR for CORS in IE - response.headers = parseHeaders(xhr.getAllResponseHeaders()); - } - } else { - err = new Error("Internal XMLHttpRequest Error"); - } + if (entry.duration === 0) { + currentUri.duration = 0.01; + this.trigger('info', { + message: 'updating zero segment duration to a small value' + }); + } - return callback(err, response, response.body); - } + this.manifest.segments = uris; + }, - var xhr = options.xhr || null; + key() { + if (!entry.attributes) { + this.trigger('warn', { + message: 'ignoring key declaration without attribute list' + }); + return; + } // clear the active encryption key - if (!xhr) { - if (options.cors || options.useXDR) { - xhr = new createXHR.XDomainRequest(); - } else { - xhr = new createXHR.XMLHttpRequest(); - } - } - var key; - var aborted; - var uri = xhr.url = options.uri || options.url; - var method = xhr.method = options.method || "GET"; - var body = options.body || options.data; - var headers = xhr.headers = options.headers || {}; - var sync = !!options.sync; - var isJson = false; - var timeoutTimer; - var failureResponse = { - body: undefined, - headers: {}, - statusCode: 0, - method: method, - url: uri, - rawRequest: xhr - }; + if (entry.attributes.METHOD === 'NONE') { + key = null; + return; + } - if ("json" in options && options.json !== false) { - isJson = true; - headers["accept"] || headers["Accept"] || (headers["Accept"] = "application/json"); //Don't override existing accept header declared by user + if (!entry.attributes.URI) { + this.trigger('warn', { + message: 'ignoring key declaration without URI' + }); + return; + } - if (method !== "GET" && method !== "HEAD") { - headers["content-type"] || headers["Content-Type"] || (headers["Content-Type"] = "application/json"); //Don't override existing accept header declared by user + if (entry.attributes.KEYFORMAT === 'com.apple.streamingkeydelivery') { + this.manifest.contentProtection = this.manifest.contentProtection || {}; // TODO: add full support for this. - body = JSON.stringify(options.json === true ? body : options.json); - } - } + this.manifest.contentProtection['com.apple.fps.1_0'] = { + attributes: entry.attributes + }; + return; + } - xhr.onreadystatechange = readystatechange; - xhr.onload = loadFunc; - xhr.onerror = errorFunc; // IE9 must have onprogress be set to a unique function. + if (entry.attributes.KEYFORMAT === 'com.microsoft.playready') { + this.manifest.contentProtection = this.manifest.contentProtection || {}; // TODO: add full support for this. - xhr.onprogress = function () {// IE must die - }; + this.manifest.contentProtection['com.microsoft.playready'] = { + uri: entry.attributes.URI + }; + return; + } // check if the content is encrypted for Widevine + // Widevine/HLS spec: https://storage.googleapis.com/wvdocs/Widevine_DRM_HLS.pdf - xhr.onabort = function () { - aborted = true; - }; - xhr.ontimeout = errorFunc; - xhr.open(method, uri, !sync, options.username, options.password); //has to be after open + if (entry.attributes.KEYFORMAT === widevineUuid) { + const VALID_METHODS = ['SAMPLE-AES', 'SAMPLE-AES-CTR', 'SAMPLE-AES-CENC']; - if (!sync) { - xhr.withCredentials = !!options.withCredentials; - } // Cannot set timeout with sync request - // not setting timeout on the xhr object, because of old webkits etc. not handling that correctly - // both npm's request and jquery 1.x use this kind of timeout, so this is being consistent + if (VALID_METHODS.indexOf(entry.attributes.METHOD) === -1) { + this.trigger('warn', { + message: 'invalid key method provided for Widevine' + }); + return; + } + if (entry.attributes.METHOD === 'SAMPLE-AES-CENC') { + this.trigger('warn', { + message: 'SAMPLE-AES-CENC is deprecated, please use SAMPLE-AES-CTR instead' + }); + } - if (!sync && options.timeout > 0) { - timeoutTimer = setTimeout(function () { - if (aborted) return; - aborted = true; //IE9 may still call readystatechange + if (entry.attributes.URI.substring(0, 23) !== 'data:text/plain;base64,') { + this.trigger('warn', { + message: 'invalid key URI provided for Widevine' + }); + return; + } - xhr.abort("timeout"); - var e = new Error("XMLHttpRequest timeout"); - e.code = "ETIMEDOUT"; - errorFunc(e); - }, options.timeout); - } + if (!(entry.attributes.KEYID && entry.attributes.KEYID.substring(0, 2) === '0x')) { + this.trigger('warn', { + message: 'invalid key ID provided for Widevine' + }); + return; + } // if Widevine key attributes are valid, store them as `contentProtection` + // on the manifest to emulate Widevine tag structure in a DASH mpd - if (xhr.setRequestHeader) { - for (key in headers) { - if (headers.hasOwnProperty(key)) { - xhr.setRequestHeader(key, headers[key]); - } - } - } else if (options.headers && !isEmpty(options.headers)) { - throw new Error("Headers cannot be set on an XDomainRequest object"); - } - if ("responseType" in options) { - xhr.responseType = options.responseType; - } + this.manifest.contentProtection = this.manifest.contentProtection || {}; + this.manifest.contentProtection['com.widevine.alpha'] = { + attributes: { + schemeIdUri: entry.attributes.KEYFORMAT, + // remove '0x' from the key id string + keyId: entry.attributes.KEYID.substring(2) + }, + // decode the base64-encoded PSSH box + pssh: (0,_videojs_vhs_utils_es_decode_b64_to_uint8_array_js__WEBPACK_IMPORTED_MODULE_2__["default"])(entry.attributes.URI.split(',')[1]) + }; + return; + } - if ("beforeSend" in options && typeof options.beforeSend === "function") { - options.beforeSend(xhr); - } // Microsoft Edge browser sends "undefined" when send is called with undefined value. - // XMLHttpRequest spec says to pass null as body to indicate no body - // See https://github.com/naugtur/xhr/issues/100. + if (!entry.attributes.METHOD) { + this.trigger('warn', { + message: 'defaulting key method to AES-128' + }); + } // setup an encryption key for upcoming segments - xhr.send(body || null); - return xhr; -} + key = { + method: entry.attributes.METHOD || 'AES-128', + uri: entry.attributes.URI + }; -function getXml(xhr) { - // xhr.responseXML will throw Exception "InvalidStateError" or "DOMException" - // See https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/responseXML. - try { - if (xhr.responseType === "document") { - return xhr.responseXML; - } + if (typeof entry.attributes.IV !== 'undefined') { + key.iv = entry.attributes.IV; + } + }, - var firefoxBugTakenEffect = xhr.responseXML && xhr.responseXML.documentElement.nodeName === "parsererror"; + 'media-sequence'() { + if (!isFinite(entry.number)) { + this.trigger('warn', { + message: 'ignoring invalid media sequence: ' + entry.number + }); + return; + } - if (xhr.responseType === "" && !firefoxBugTakenEffect) { - return xhr.responseXML; - } - } catch (e) {} + this.manifest.mediaSequence = entry.number; + }, - return null; -} + 'discontinuity-sequence'() { + if (!isFinite(entry.number)) { + this.trigger('warn', { + message: 'ignoring invalid discontinuity sequence: ' + entry.number + }); + return; + } -function noop() {} + this.manifest.discontinuitySequence = entry.number; + currentTimeline = entry.number; + }, -/***/ }), + 'playlist-type'() { + if (!/VOD|EVENT/.test(entry.playlistType)) { + this.trigger('warn', { + message: 'ignoring unknown playlist type: ' + entry.playlist + }); + return; + } -/***/ "./src/js/components/accordion.js": -/*!****************************************!*\ - !*** ./src/js/components/accordion.js ***! - \****************************************/ -/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { + this.manifest.playlistType = entry.playlistType; + }, -"use strict"; -__webpack_require__.r(__webpack_exports__); -/* harmony export */ __webpack_require__.d(__webpack_exports__, { -/* harmony export */ toggleAccordion: () => (/* binding */ toggleAccordion) -/* harmony export */ }); -let items = document.querySelectorAll('.accordion__item'); -let title = document.querySelectorAll('.accordion__title-wrapper'); -const toggleAccordion = () => { - title.forEach(question => question.addEventListener('click', function () { - let thisItem = this.parentNode; - items.forEach(item => { - if (thisItem == item) { - thisItem.classList.toggle('active'); - return; - } - item.classList.remove('active'); - }); - })); -}; + map() { + currentMap = {}; -/***/ }), + if (entry.uri) { + currentMap.uri = entry.uri; + } -/***/ "./src/js/components/burger-menu.js": -/*!******************************************!*\ - !*** ./src/js/components/burger-menu.js ***! - \******************************************/ -/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { + if (entry.byterange) { + currentMap.byterange = entry.byterange; + } -"use strict"; -__webpack_require__.r(__webpack_exports__); -/* harmony export */ __webpack_require__.d(__webpack_exports__, { -/* harmony export */ changeMenu: () => (/* binding */ changeMenu) -/* harmony export */ }); -const burger = document.querySelector('.burger-js'); -const menu = document.querySelector('.menu-js'); -const menuLinks = document.querySelectorAll('.nav__link'); -const changeMenu = () => { - burger?.addEventListener('click', () => { - menu?.classList.toggle('active'); - burger?.classList.toggle('active'); - if (menu?.classList.contains('active')) { - document.body.style.overflowY = 'hidden'; - } else { - document.body.style.overflowY = 'auto'; - } - }); - menuLinks.forEach(el => { - el.addEventListener('click', () => { - menu?.classList.remove('active'); - document.body.style.overflowY = 'auto'; - burger?.classList.remove('active'); - }); - }); -}; + if (key) { + currentMap.key = key; + } + }, -/***/ }), + 'stream-inf'() { + this.manifest.playlists = uris; + this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups; -/***/ "./src/js/components/paint-btn.js": -/*!****************************************!*\ - !*** ./src/js/components/paint-btn.js ***! - \****************************************/ -/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { + if (!entry.attributes) { + this.trigger('warn', { + message: 'ignoring empty stream-inf attributes' + }); + return; + } -"use strict"; -__webpack_require__.r(__webpack_exports__); -/* harmony export */ __webpack_require__.d(__webpack_exports__, { -/* harmony export */ paintBtn: () => (/* binding */ paintBtn) -/* harmony export */ }); -const btnNext = document.querySelector('.nav-history__next'); -const paintBtn = () => { - try { - const scrollToTop = () => { - const top = window.scrollY; - if (top >= 100) { - btnNext.classList.add('active'); - } else { - btnNext.classList.remove('active'); - } - }; - scrollToTop(); - window.addEventListener('scroll', () => { - scrollToTop(); - }); - } catch (e) { - console.log(e); - } -}; + if (!currentUri.attributes) { + currentUri.attributes = {}; + } -/***/ }), + (0,_babel_runtime_helpers_extends__WEBPACK_IMPORTED_MODULE_1__["default"])(currentUri.attributes, entry.attributes); + }, -/***/ "./src/js/components/scroll-smooth.js": -/*!********************************************!*\ - !*** ./src/js/components/scroll-smooth.js ***! - \********************************************/ -/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { + media() { + this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups; -"use strict"; -__webpack_require__.r(__webpack_exports__); -/* harmony export */ __webpack_require__.d(__webpack_exports__, { -/* harmony export */ addSmoothScroll: () => (/* binding */ addSmoothScroll) -/* harmony export */ }); -/* harmony import */ var _node_modules_smooth_scroll_dist_smooth_scroll_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ../../../node_modules/smooth-scroll/dist/smooth-scroll.js */ "./node_modules/smooth-scroll/dist/smooth-scroll.js"); -/* harmony import */ var _node_modules_smooth_scroll_dist_smooth_scroll_js__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(_node_modules_smooth_scroll_dist_smooth_scroll_js__WEBPACK_IMPORTED_MODULE_0__); + if (!(entry.attributes && entry.attributes.TYPE && entry.attributes['GROUP-ID'] && entry.attributes.NAME)) { + this.trigger('warn', { + message: 'ignoring incomplete or missing media group' + }); + return; + } // find the media group, creating defaults as necessary -const header = document.querySelector('header'); -const btnUpWrapper = document.querySelector('.btn-up-wrapper'); -const addSmoothScroll = () => { - const scroll = new (_node_modules_smooth_scroll_dist_smooth_scroll_js__WEBPACK_IMPORTED_MODULE_0___default())('a[href*="#"]', { - header: '.header', - speed: 500 - }); - const scrollToTop = () => { - const top = window.scrollY; - if (top >= 100) { - header.classList.add('active'); - } else { - header.classList.remove('active'); - } - if (top >= 300) { - btnUpWrapper.classList.add('active'); - } else { - btnUpWrapper.classList.remove('active'); - } - }; - scrollToTop(); - window.addEventListener('scroll', () => { - scrollToTop(); - }); -}; -/***/ }), + const mediaGroupType = this.manifest.mediaGroups[entry.attributes.TYPE]; + mediaGroupType[entry.attributes['GROUP-ID']] = mediaGroupType[entry.attributes['GROUP-ID']] || {}; + mediaGroup = mediaGroupType[entry.attributes['GROUP-ID']]; // collect the rendition metadata -/***/ "./src/js/components/sliders.js": -/*!**************************************!*\ - !*** ./src/js/components/sliders.js ***! - \**************************************/ -/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { + rendition = { + default: /yes/i.test(entry.attributes.DEFAULT) + }; -"use strict"; -__webpack_require__.r(__webpack_exports__); -/* harmony export */ __webpack_require__.d(__webpack_exports__, { -/* harmony export */ initializationSliders: () => (/* binding */ initializationSliders) -/* harmony export */ }); -/* harmony import */ var swiper__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! swiper */ "./node_modules/swiper/swiper.esm.js"); + if (rendition.default) { + rendition.autoselect = true; + } else { + rendition.autoselect = /yes/i.test(entry.attributes.AUTOSELECT); + } -swiper__WEBPACK_IMPORTED_MODULE_0__["default"].use([swiper__WEBPACK_IMPORTED_MODULE_0__.Navigation, swiper__WEBPACK_IMPORTED_MODULE_0__.Pagination, swiper__WEBPACK_IMPORTED_MODULE_0__.Autoplay]); -const initializationSliders = () => { - try { - const recomendationsSlider = new swiper__WEBPACK_IMPORTED_MODULE_0__["default"]('.recommendations__slider', { - slidesPerView: '1', - navigation: { - nextEl: '.recommendations__slider-navigation-next', - prevEl: '.recommendations__slider-navigation-prev' - }, - loop: true - }); - const goodsSlider = new swiper__WEBPACK_IMPORTED_MODULE_0__["default"]('.goods__slider', { - slidesPerView: 3, - loop: true, - navigation: { - nextEl: '.goods__slider-next', - prevEl: '.goods__slider-prev' - }, - pagination: { - clickable: true, - el: '.goods__slider-pagination', - clickable: true - }, - breakpoints: { - 940: { - slidesPerView: 4 - }, - 764: { - slidesPerView: 3 - }, - 600: { - slidesPerView: 2 - }, - 0: { - slidesPerView: 1 - } - } - }); - const professionalSlider = new swiper__WEBPACK_IMPORTED_MODULE_0__["default"]('.professional__slider', { - navigation: { - nextEl: '.professional__slider-navigation-next', - prevEl: '.professional__slider-navigation-prev' - }, - paginationClickable: true, - // loop: true, - initialSlide: 1, - centeredSlides: true, - slidesPerView: 2, - speed: 1000, - zoom: { - maxRatio: 1.6 - }, - pagination: { - clickable: true, - el: '.professional__slider-pagination', - clickable: true - }, - breakpoints: { - 993: { - spaceBetween: -180 - }, - 860: { - spaceBetween: -260, - slidesPerView: 2 - }, - 768: { - spaceBetween: -200 - }, - 500: { - spaceBetween: -80 - }, - 320: { - slidesPerView: 1.6, - spaceBetween: -80 - } - }, - allowTouchMove: false - }); - const interviewSlider = new swiper__WEBPACK_IMPORTED_MODULE_0__["default"]('.interview__slider', { - navigation: { - nextEl: '.interview__slider-navigation-next', - prevEl: '.interview__slider-navigation-prev' - }, - pagination: { - el: '.interview__slider-pagination', - clickable: true - }, - allowTouchMove: false, - paginationClickable: true, - centeredSlides: true, - loop: true, - speed: 1000 - }); - const partnersSlider = new swiper__WEBPACK_IMPORTED_MODULE_0__["default"]('.partners__wrapper', { - freeMode: true, - grabCursor: true, - centeredSlides: true, - slidesPerView: 'auto', - loop: true, - speed: 2000, - autoplay: { - enabled: true, - delay: 1, - disableOnInteraction: true - }, - freeModeMomentum: true - }); - document.querySelector('.partners__wrapper').addEventListener('mouseover', function () { - partnersSlider.autoplay.stop(); - }); - document.querySelector('.partners__wrapper').addEventListener('mouseout', function () { - partnersSlider.autoplay.start(); - }); - window.addEventListener('scroll', () => { - if (!partnersSlider.autoplay.running) { - partnersSlider.autoplay.start(); - } - }); - } catch (e) { - console.error(e); - } -}; + if (entry.attributes.LANGUAGE) { + rendition.language = entry.attributes.LANGUAGE; + } -/***/ }), + if (entry.attributes.URI) { + rendition.uri = entry.attributes.URI; + } -/***/ "./src/js/components/video-player.js": -/*!*******************************************!*\ - !*** ./src/js/components/video-player.js ***! - \*******************************************/ -/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { + if (entry.attributes['INSTREAM-ID']) { + rendition.instreamId = entry.attributes['INSTREAM-ID']; + } -"use strict"; -__webpack_require__.r(__webpack_exports__); -/* harmony export */ __webpack_require__.d(__webpack_exports__, { -/* harmony export */ addVideoPlayer: () => (/* binding */ addVideoPlayer) -/* harmony export */ }); -/* harmony import */ var video_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! video.js */ "./node_modules/video.js/dist/video.es.js"); + if (entry.attributes.CHARACTERISTICS) { + rendition.characteristics = entry.attributes.CHARACTERISTICS; + } -const playBtn = document.querySelector('.video__btn'); -const videoTitle = document.querySelector('.video__title'); -const videoText = document.querySelector('.video__text'); -const videoLink = document.querySelector('.video__link'); -const videoGradient = document.querySelector('.video__gradient'); -const videoIntro = document.querySelector('.video__intro'); -const videoMask = document.querySelector('.video__mask'); -const videoJsTech = document.querySelector('.vjs-tech'); -const addVideoPlayer = () => { - try { - let isPreviewVideo = true; - const videoPlayer = (0,video_js__WEBPACK_IMPORTED_MODULE_0__["default"])(document.getElementById('video__player'), { - autoplay: true, - loop: true, - muted: true, - controls: false, - playToggle: false - }); - const loadMainVideo = (desktopUrl, mobileUrl) => { - if (window.screen.width > 768) { - videoPlayer.src({ - type: 'video/mp4', - src: `./videos/${desktopUrl}` - }); - } else { - videoPlayer.src({ - type: 'video/mp4', - src: `./videos/${mobileUrl}` - }); - } - }; - loadMainVideo('preview.mp4', 'preview-mobile.mp4'); - videoPlayer.volume(0.7); - const changePlayerStatus = () => { - videoPlayer.play(); - videoPlayer.addClass('play'); - videoPlayer.muted(false); - videoPlayer.controls(true); - videoPlayer.loop(false); - playBtn.classList.add('hide'); - videoTitle.classList.add('hide'); - videoText.classList.add('hide'); - videoLink.classList.add('hide'); - }; - videoPlayer.on('play', () => { - if (!videoPlayer.played()) { - videoPlayer.addClass('play'); - videoPlayer.removeClass('play'); - playBtn?.classList.add('hide'); - } else if (videoPlayer.played() && videoPlayer.loop()) { - videoPlayer.removeClass('play'); - } else if (videoPlayer.played() && !videoPlayer.loop()) { - videoPlayer.removeClass('play'); - playBtn?.classList.add('hide'); - } - }); - videoPlayer.on('pause', () => { - playBtn?.classList.remove('hide'); - }); - videoPlayer.on('ended', () => { - playBtn?.classList.remove('hide'); - videoMask?.classList.remove('visible'); - }); - videoMask.addEventListener('click', () => { - playBtn?.classList.remove('hide'); - videoPlayer.pause(); - videoMask?.classList.remove('visible'); - }); - playBtn.addEventListener('click', () => { - if (isPreviewVideo === true) { - loadMainVideo('video.mp4', 'video-mobile.mp4'); - isPreviewVideo = false; - } - document.querySelector('.video__inner').classList.add('active'); - document.querySelector('.video-js').classList.add('active'); - document.querySelector('.vjs-poster').classList.add('active'); - videoPlayer.fluid(true); - videoGradient?.classList.add('hide'); - videoMask?.classList.add('visible'); - playBtn?.classList.add('center-position'); - document.querySelector('video').style.objectFit = 'contain'; - if (videoPlayer.muted()) { - videoPlayer.currentTime(0); - changePlayerStatus(); - } else { - changePlayerStatus(); - } - }); - } catch (e) { - console.log(e); - } -}; + if (entry.attributes.FORCED) { + rendition.forced = /yes/i.test(entry.attributes.FORCED); + } // insert the new rendition -/***/ }), -/***/ "./node_modules/global/document.js": -/*!*****************************************!*\ - !*** ./node_modules/global/document.js ***! - \*****************************************/ -/***/ ((module, __unused_webpack_exports, __webpack_require__) => { + mediaGroup[entry.attributes.NAME] = rendition; + }, -var topLevel = typeof __webpack_require__.g !== 'undefined' ? __webpack_require__.g : - typeof window !== 'undefined' ? window : {} -var minDoc = __webpack_require__(/*! min-document */ "?34aa"); + discontinuity() { + currentTimeline += 1; + currentUri.discontinuity = true; + this.manifest.discontinuityStarts.push(uris.length); + }, -var doccy; + 'program-date-time'() { + if (typeof this.manifest.dateTimeString === 'undefined') { + // PROGRAM-DATE-TIME is a media-segment tag, but for backwards + // compatibility, we add the first occurence of the PROGRAM-DATE-TIME tag + // to the manifest object + // TODO: Consider removing this in future major version + this.manifest.dateTimeString = entry.dateTimeString; + this.manifest.dateTimeObject = entry.dateTimeObject; + } -if (typeof document !== 'undefined') { - doccy = document; -} else { - doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4']; + currentUri.dateTimeString = entry.dateTimeString; + currentUri.dateTimeObject = entry.dateTimeObject; + }, - if (!doccy) { - doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4'] = minDoc; - } -} + targetduration() { + if (!isFinite(entry.duration) || entry.duration < 0) { + this.trigger('warn', { + message: 'ignoring invalid target duration: ' + entry.duration + }); + return; + } -module.exports = doccy; + this.manifest.targetDuration = entry.duration; + setHoldBack.call(this, this.manifest); + }, + start() { + if (!entry.attributes || isNaN(entry.attributes['TIME-OFFSET'])) { + this.trigger('warn', { + message: 'ignoring start declaration without appropriate attribute list' + }); + return; + } -/***/ }), + this.manifest.start = { + timeOffset: entry.attributes['TIME-OFFSET'], + precise: entry.attributes.PRECISE + }; + }, -/***/ "./node_modules/global/window.js": -/*!***************************************!*\ - !*** ./node_modules/global/window.js ***! - \***************************************/ -/***/ ((module, __unused_webpack_exports, __webpack_require__) => { + 'cue-out'() { + currentUri.cueOut = entry.data; + }, -var win; + 'cue-out-cont'() { + currentUri.cueOutCont = entry.data; + }, -if (typeof window !== "undefined") { - win = window; -} else if (typeof __webpack_require__.g !== "undefined") { - win = __webpack_require__.g; -} else if (typeof self !== "undefined"){ - win = self; -} else { - win = {}; -} + 'cue-in'() { + currentUri.cueIn = entry.data; + }, -module.exports = win; + 'skip'() { + this.manifest.skip = camelCaseKeys(entry.attributes); + this.warnOnMissingAttributes_('#EXT-X-SKIP', entry.attributes, ['SKIPPED-SEGMENTS']); + }, + 'part'() { + hasParts = true; // parts are always specifed before a segment -/***/ }), + const segmentIndex = this.manifest.segments.length; + const part = camelCaseKeys(entry.attributes); + currentUri.parts = currentUri.parts || []; + currentUri.parts.push(part); -/***/ "./node_modules/is-function/index.js": -/*!*******************************************!*\ - !*** ./node_modules/is-function/index.js ***! - \*******************************************/ -/***/ ((module) => { + if (part.byterange) { + if (!part.byterange.hasOwnProperty('offset')) { + part.byterange.offset = lastPartByterangeEnd; + } -module.exports = isFunction + lastPartByterangeEnd = part.byterange.offset + part.byterange.length; + } -var toString = Object.prototype.toString + const partIndex = currentUri.parts.length - 1; + this.warnOnMissingAttributes_(`#EXT-X-PART #${partIndex} for segment #${segmentIndex}`, entry.attributes, ['URI', 'DURATION']); -function isFunction (fn) { - if (!fn) { - return false - } - var string = toString.call(fn) - return string === '[object Function]' || - (typeof fn === 'function' && string !== '[object RegExp]') || - (typeof window !== 'undefined' && - // IE8 and below - (fn === window.setTimeout || - fn === window.alert || - fn === window.confirm || - fn === window.prompt)) -}; + if (this.manifest.renditionReports) { + this.manifest.renditionReports.forEach((r, i) => { + if (!r.hasOwnProperty('lastPart')) { + this.trigger('warn', { + message: `#EXT-X-RENDITION-REPORT #${i} lacks required attribute(s): LAST-PART` + }); + } + }); + } + }, + 'server-control'() { + const attrs = this.manifest.serverControl = camelCaseKeys(entry.attributes); -/***/ }), + if (!attrs.hasOwnProperty('canBlockReload')) { + attrs.canBlockReload = false; + this.trigger('info', { + message: '#EXT-X-SERVER-CONTROL defaulting CAN-BLOCK-RELOAD to false' + }); + } -/***/ "./node_modules/keycode/index.js": -/*!***************************************!*\ - !*** ./node_modules/keycode/index.js ***! - \***************************************/ -/***/ ((module, exports) => { + setHoldBack.call(this, this.manifest); -// Source: http://jsfiddle.net/vWx8V/ -// http://stackoverflow.com/questions/5603195/full-list-of-javascript-keycodes + if (attrs.canSkipDateranges && !attrs.hasOwnProperty('canSkipUntil')) { + this.trigger('warn', { + message: '#EXT-X-SERVER-CONTROL lacks required attribute CAN-SKIP-UNTIL which is required when CAN-SKIP-DATERANGES is set' + }); + } + }, -/** - * Conenience method returns corresponding value for given keyName or keyCode. - * - * @param {Mixed} keyCode {Number} or keyName {String} - * @return {Mixed} - * @api public - */ + 'preload-hint'() { + // parts are always specifed before a segment + const segmentIndex = this.manifest.segments.length; + const hint = camelCaseKeys(entry.attributes); + const isPart = hint.type && hint.type === 'PART'; + currentUri.preloadHints = currentUri.preloadHints || []; + currentUri.preloadHints.push(hint); -function keyCode(searchInput) { - // Keyboard Events - if (searchInput && 'object' === typeof searchInput) { - var hasKeyCode = searchInput.which || searchInput.keyCode || searchInput.charCode - if (hasKeyCode) searchInput = hasKeyCode - } + if (hint.byterange) { + if (!hint.byterange.hasOwnProperty('offset')) { + // use last part byterange end or zero if not a part. + hint.byterange.offset = isPart ? lastPartByterangeEnd : 0; - // Numbers - if ('number' === typeof searchInput) return names[searchInput] + if (isPart) { + lastPartByterangeEnd = hint.byterange.offset + hint.byterange.length; + } + } + } - // Everything else (cast to string) - var search = String(searchInput) + const index = currentUri.preloadHints.length - 1; + this.warnOnMissingAttributes_(`#EXT-X-PRELOAD-HINT #${index} for segment #${segmentIndex}`, entry.attributes, ['TYPE', 'URI']); - // check codes - var foundNamedKey = codes[search.toLowerCase()] - if (foundNamedKey) return foundNamedKey + if (!hint.type) { + return; + } // search through all preload hints except for the current one for + // a duplicate type. - // check aliases - var foundNamedKey = aliases[search.toLowerCase()] - if (foundNamedKey) return foundNamedKey - // weird character? - if (search.length === 1) return search.charCodeAt(0) + for (let i = 0; i < currentUri.preloadHints.length - 1; i++) { + const otherHint = currentUri.preloadHints[i]; - return undefined -} + if (!otherHint.type) { + continue; + } -/** - * Compares a keyboard event with a given keyCode or keyName. - * - * @param {Event} event Keyboard event that should be tested - * @param {Mixed} keyCode {Number} or keyName {String} - * @return {Boolean} - * @api public - */ -keyCode.isEventKey = function isEventKey(event, nameOrCode) { - if (event && 'object' === typeof event) { - var keyCode = event.which || event.keyCode || event.charCode - if (keyCode === null || keyCode === undefined) { return false; } - if (typeof nameOrCode === 'string') { - // check codes - var foundNamedKey = codes[nameOrCode.toLowerCase()] - if (foundNamedKey) { return foundNamedKey === keyCode; } - - // check aliases - var foundNamedKey = aliases[nameOrCode.toLowerCase()] - if (foundNamedKey) { return foundNamedKey === keyCode; } - } else if (typeof nameOrCode === 'number') { - return nameOrCode === keyCode; - } - return false; - } -} + if (otherHint.type === hint.type) { + this.trigger('warn', { + message: `#EXT-X-PRELOAD-HINT #${index} for segment #${segmentIndex} has the same TYPE ${hint.type} as preload hint #${i}` + }); + } + } + }, -exports = module.exports = keyCode; + 'rendition-report'() { + const report = camelCaseKeys(entry.attributes); + this.manifest.renditionReports = this.manifest.renditionReports || []; + this.manifest.renditionReports.push(report); + const index = this.manifest.renditionReports.length - 1; + const required = ['LAST-MSN', 'URI']; -/** - * Get by name - * - * exports.code['enter'] // => 13 - */ + if (hasParts) { + required.push('LAST-PART'); + } -var codes = exports.code = exports.codes = { - 'backspace': 8, - 'tab': 9, - 'enter': 13, - 'shift': 16, - 'ctrl': 17, - 'alt': 18, - 'pause/break': 19, - 'caps lock': 20, - 'esc': 27, - 'space': 32, - 'page up': 33, - 'page down': 34, - 'end': 35, - 'home': 36, - 'left': 37, - 'up': 38, - 'right': 39, - 'down': 40, - 'insert': 45, - 'delete': 46, - 'command': 91, - 'left command': 91, - 'right command': 93, - 'numpad *': 106, - 'numpad +': 107, - 'numpad -': 109, - 'numpad .': 110, - 'numpad /': 111, - 'num lock': 144, - 'scroll lock': 145, - 'my computer': 182, - 'my calculator': 183, - ';': 186, - '=': 187, - ',': 188, - '-': 189, - '.': 190, - '/': 191, - '`': 192, - '[': 219, - '\\': 220, - ']': 221, - "'": 222 -} + this.warnOnMissingAttributes_(`#EXT-X-RENDITION-REPORT #${index}`, entry.attributes, required); + }, -// Helper aliases + 'part-inf'() { + this.manifest.partInf = camelCaseKeys(entry.attributes); + this.warnOnMissingAttributes_('#EXT-X-PART-INF', entry.attributes, ['PART-TARGET']); -var aliases = exports.aliases = { - 'windows': 91, - '⇧': 16, - '⌥': 18, - '⌃': 17, - '⌘': 91, - 'ctl': 17, - 'control': 17, - 'option': 18, - 'pause': 19, - 'break': 19, - 'caps': 20, - 'return': 13, - 'escape': 27, - 'spc': 32, - 'spacebar': 32, - 'pgup': 33, - 'pgdn': 34, - 'ins': 45, - 'del': 46, - 'cmd': 91 -} + if (this.manifest.partInf.partTarget) { + this.manifest.partTargetDuration = this.manifest.partInf.partTarget; + } -/*! - * Programatically add the following - */ + setHoldBack.call(this, this.manifest); + }, -// lower case chars -for (i = 97; i < 123; i++) codes[String.fromCharCode(i)] = i - 32 + 'daterange'() { + this.manifest.daterange = this.manifest.daterange || []; + this.manifest.daterange.push(camelCaseKeys(entry.attributes)); + const index = this.manifest.daterange.length - 1; + this.warnOnMissingAttributes_(`#EXT-X-DATERANGE #${index}`, entry.attributes, ['ID', 'START-DATE']); + const daterange = this.manifest.daterange[index]; -// numbers -for (var i = 48; i < 58; i++) codes[i - 48] = i + if (daterange.endDate && daterange.startDate && new Date(daterange.endDate) < new Date(daterange.startDate)) { + this.trigger('warn', { + message: 'EXT-X-DATERANGE END-DATE must be equal to or later than the value of the START-DATE' + }); + } -// function keys -for (i = 1; i < 13; i++) codes['f'+i] = i + 111 + if (daterange.duration && daterange.duration < 0) { + this.trigger('warn', { + message: 'EXT-X-DATERANGE DURATION must not be negative' + }); + } -// numpad keys -for (i = 0; i < 10; i++) codes['numpad '+i] = i + 96 + if (daterange.plannedDuration && daterange.plannedDuration < 0) { + this.trigger('warn', { + message: 'EXT-X-DATERANGE PLANNED-DURATION must not be negative' + }); + } -/** - * Get by code - * - * exports.name[13] // => 'Enter' - */ + const endOnNextYes = !!daterange.endOnNext; -var names = exports.names = exports.title = {} // title for backward compat + if (endOnNextYes && !daterange.class) { + this.trigger('warn', { + message: 'EXT-X-DATERANGE with an END-ON-NEXT=YES attribute must have a CLASS attribute' + }); + } -// Create reverse mapping -for (i in codes) names[codes[i]] = i + if (endOnNextYes && (daterange.duration || daterange.endDate)) { + this.trigger('warn', { + message: 'EXT-X-DATERANGE with an END-ON-NEXT=YES attribute must not contain DURATION or END-DATE attributes' + }); + } -// Add aliases -for (var alias in aliases) { - codes[alias] = aliases[alias] -} + if (daterange.duration && daterange.endDate) { + const startDate = daterange.startDate; + const newDateInSeconds = startDate.setSeconds(startDate.getSeconds() + daterange.duration); + this.manifest.daterange[index].endDate = new Date(newDateInSeconds); + } + if (daterange && !this.manifest.dateTimeString) { + this.trigger('warn', { + message: 'A playlist with EXT-X-DATERANGE tag must contain atleast one EXT-X-PROGRAM-DATE-TIME tag' + }); + } -/***/ }), + if (!daterangeTags[daterange.id]) { + daterangeTags[daterange.id] = daterange; + } else { + for (const attribute in daterangeTags[daterange.id]) { + if (daterangeTags[daterange.id][attribute] !== daterange[attribute]) { + this.trigger('warn', { + message: 'EXT-X-DATERANGE tags with the same ID in a playlist must have the same attributes and same attribute values' + }); + break; + } + } + } + }, -/***/ "./node_modules/m3u8-parser/dist/m3u8-parser.es.js": -/*!*********************************************************!*\ - !*** ./node_modules/m3u8-parser/dist/m3u8-parser.es.js ***! - \*********************************************************/ -/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { + 'independent-segments'() { + this.manifest.independentSegments = true; + } -"use strict"; -__webpack_require__.r(__webpack_exports__); -/* harmony export */ __webpack_require__.d(__webpack_exports__, { -/* harmony export */ LineStream: () => (/* binding */ LineStream), -/* harmony export */ ParseStream: () => (/* binding */ ParseStream), -/* harmony export */ Parser: () => (/* binding */ Parser) -/* harmony export */ }); -/* harmony import */ var _videojs_vhs_utils_es_stream_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! @videojs/vhs-utils/es/stream.js */ "./node_modules/m3u8-parser/node_modules/@videojs/vhs-utils/es/stream.js"); -/* harmony import */ var _babel_runtime_helpers_extends__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! @babel/runtime/helpers/extends */ "./node_modules/@babel/runtime/helpers/esm/extends.js"); -/* harmony import */ var _videojs_vhs_utils_es_decode_b64_to_uint8_array_js__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! @videojs/vhs-utils/es/decode-b64-to-uint8-array.js */ "./node_modules/m3u8-parser/node_modules/@videojs/vhs-utils/es/decode-b64-to-uint8-array.js"); -/*! @name m3u8-parser @version 6.2.0 @license Apache-2.0 */ + })[entry.tagType] || noop).call(self); + }, + uri() { + currentUri.uri = entry.uri; + uris.push(currentUri); // if no explicit duration was declared, use the target duration + if (this.manifest.targetDuration && !('duration' in currentUri)) { + this.trigger('warn', { + message: 'defaulting segment duration to the target duration' + }); + currentUri.duration = this.manifest.targetDuration; + } // annotate with encryption information, if necessary -/** - * @file m3u8/line-stream.js - */ -/** - * A stream that buffers string input and generates a `data` event for each - * line. - * - * @class LineStream - * @extends Stream - */ + if (key) { + currentUri.key = key; + } -class LineStream extends _videojs_vhs_utils_es_stream_js__WEBPACK_IMPORTED_MODULE_0__["default"] { - constructor() { - super(); - this.buffer = ''; - } - /** - * Add new data to be parsed. - * - * @param {string} data the text to process - */ + currentUri.timeline = currentTimeline; // annotate with initialization segment information, if necessary + if (currentMap) { + currentUri.map = currentMap; + } // reset the last byterange end as it needs to be 0 between parts - push(data) { - let nextNewline; - this.buffer += data; - nextNewline = this.buffer.indexOf('\n'); - for (; nextNewline > -1; nextNewline = this.buffer.indexOf('\n')) { - this.trigger('data', this.buffer.substring(0, nextNewline)); - this.buffer = this.buffer.substring(nextNewline + 1); - } - } + lastPartByterangeEnd = 0; // prepare for the next URI -} + currentUri = {}; + }, -const TAB = String.fromCharCode(0x09); + comment() {// comments are not important for playback + }, -const parseByterange = function (byterangeString) { - // optionally match and capture 0+ digits before `@` - // optionally match and capture 0+ digits after `@` - const match = /([0-9.]*)?@?([0-9.]*)?/.exec(byterangeString || ''); - const result = {}; + custom() { + // if this is segment-level data attach the output to the segment + if (entry.segment) { + currentUri.custom = currentUri.custom || {}; + currentUri.custom[entry.customType] = entry.data; // if this is manifest-level data attach to the top level manifest object + } else { + this.manifest.custom = this.manifest.custom || {}; + this.manifest.custom[entry.customType] = entry.data; + } + } - if (match[1]) { - result.length = parseInt(match[1], 10); - } - - if (match[2]) { - result.offset = parseInt(match[2], 10); + })[entry.type].call(self); + }); } - return result; -}; -/** - * "forgiving" attribute list psuedo-grammar: - * attributes -> keyvalue (',' keyvalue)* - * keyvalue -> key '=' value - * key -> [^=]* - * value -> '"' [^"]* '"' | [^,]* - */ - - -const attributeSeparator = function () { - const key = '[^=]*'; - const value = '"[^"]*"|[^,]*'; - const keyvalue = '(?:' + key + ')=(?:' + value + ')'; - return new RegExp('(?:^|,)(' + keyvalue + ')'); -}; -/** - * Parse attributes from a line given the separator - * - * @param {string} attributes the attribute line to parse - */ - - -const parseAttributes = function (attributes) { - const result = {}; - - if (!attributes) { - return result; - } // split the string using attributes as the separator - - - const attrs = attributes.split(attributeSeparator()); - let i = attrs.length; - let attr; - - while (i--) { - // filter out unmatched portions of the string - if (attrs[i] === '') { - continue; - } // split the key and value + warnOnMissingAttributes_(identifier, attributes, required) { + const missing = []; + required.forEach(function (key) { + if (!attributes.hasOwnProperty(key)) { + missing.push(key); + } + }); + if (missing.length) { + this.trigger('warn', { + message: `${identifier} lacks required attribute(s): ${missing.join(', ')}` + }); + } + } + /** + * Parse the input string and update the manifest object. + * + * @param {string} chunk a potentially incomplete portion of the manifest + */ - attr = /([^=]*)=(.*)/.exec(attrs[i]).slice(1); // trim whitespace and remove optional quotes around the value - attr[0] = attr[0].replace(/^\s+|\s+$/g, ''); - attr[1] = attr[1].replace(/^\s+|\s+$/g, ''); - attr[1] = attr[1].replace(/^['"](.*)['"]$/g, '$1'); - result[attr[0]] = attr[1]; + push(chunk) { + this.lineStream.push(chunk); } - - return result; -}; -/** - * A line-level M3U8 parser event stream. It expects to receive input one - * line at a time and performs a context-free parse of its contents. A stream - * interpretation of a manifest can be useful if the manifest is expected to - * be too large to fit comfortably into memory or the entirety of the input - * is not immediately available. Otherwise, it's probably much easier to work - * with a regular `Parser` object. - * - * Produces `data` events with an object that captures the parser's - * interpretation of the input. That object has a property `tag` that is one - * of `uri`, `comment`, or `tag`. URIs only have a single additional - * property, `line`, which captures the entirety of the input without - * interpretation. Comments similarly have a single additional property - * `text` which is the input without the leading `#`. - * - * Tags always have a property `tagType` which is the lower-cased version of - * the M3U8 directive without the `#EXT` or `#EXT-X-` prefix. For instance, - * `#EXT-X-MEDIA-SEQUENCE` becomes `media-sequence` when parsed. Unrecognized - * tags are given the tag type `unknown` and a single additional property - * `data` with the remainder of the input. - * - * @class ParseStream - * @extends Stream - */ + /** + * Flush any remaining input. This can be handy if the last line of an M3U8 + * manifest did not contain a trailing newline but the file has been + * completely received. + */ -class ParseStream extends _videojs_vhs_utils_es_stream_js__WEBPACK_IMPORTED_MODULE_0__["default"] { - constructor() { - super(); - this.customParsers = []; - this.tagMappers = []; + end() { + // flush any buffered input + this.lineStream.push('\n'); + this.trigger('end'); } /** - * Parses an additional line of input. + * Add an additional parser for non-standard tags * - * @param {string} line a single line of an M3U8 file to parse + * @param {Object} options a map of options for the added parser + * @param {RegExp} options.expression a regular expression to match the custom header + * @param {string} options.type the type to register to the output + * @param {Function} [options.dataParser] function to parse the line into an object + * @param {boolean} [options.segment] should tag data be attached to the segment object */ - push(line) { - let match; - let event; // strip whitespace - - line = line.trim(); + addParser(options) { + this.parseStream.addParser(options); + } + /** + * Add a custom header mapper + * + * @param {Object} options + * @param {RegExp} options.expression a regular expression to match the custom header + * @param {Function} options.map function to translate tag into a different tag + */ - if (line.length === 0) { - // ignore empty lines - return; - } // URIs + addTagMapper(options) { + this.parseStream.addTagMapper(options); + } - if (line[0] !== '#') { - this.trigger('data', { - type: 'uri', - uri: line - }); - return; - } // map tags +} - const newLines = this.tagMappers.reduce((acc, mapper) => { - const mappedLine = mapper(line); // skip if unchanged - if (mappedLine === line) { - return acc; - } - return acc.concat([mappedLine]); - }, [line]); - newLines.forEach(newLine => { - for (let i = 0; i < this.customParsers.length; i++) { - if (this.customParsers[i].call(this, newLine)) { - return; - } - } // Comments +/***/ }), +/***/ "./node_modules/mpd-parser/dist/mpd-parser.es.js": +/*!*******************************************************!*\ + !*** ./node_modules/mpd-parser/dist/mpd-parser.es.js ***! + \*******************************************************/ +/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { - if (newLine.indexOf('#EXT') !== 0) { - this.trigger('data', { - type: 'comment', - text: newLine.slice(1) - }); - return; - } // strip off any carriage returns here so the regex matching - // doesn't have to account for them. +"use strict"; +__webpack_require__.r(__webpack_exports__); +/* harmony export */ __webpack_require__.d(__webpack_exports__, { +/* harmony export */ VERSION: () => (/* binding */ VERSION), +/* harmony export */ addSidxSegmentsToPlaylist: () => (/* binding */ addSidxSegmentsToPlaylist$1), +/* harmony export */ generateSidxKey: () => (/* binding */ generateSidxKey), +/* harmony export */ inheritAttributes: () => (/* binding */ inheritAttributes), +/* harmony export */ parse: () => (/* binding */ parse), +/* harmony export */ parseUTCTiming: () => (/* binding */ parseUTCTiming), +/* harmony export */ stringToMpdXml: () => (/* binding */ stringToMpdXml), +/* harmony export */ toM3u8: () => (/* binding */ toM3u8), +/* harmony export */ toPlaylists: () => (/* binding */ toPlaylists) +/* harmony export */ }); +/* harmony import */ var _videojs_vhs_utils_es_resolve_url__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! @videojs/vhs-utils/es/resolve-url */ "./node_modules/@videojs/vhs-utils/es/resolve-url.js"); +/* harmony import */ var global_window__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! global/window */ "./node_modules/global/window.js"); +/* harmony import */ var global_window__WEBPACK_IMPORTED_MODULE_1___default = /*#__PURE__*/__webpack_require__.n(global_window__WEBPACK_IMPORTED_MODULE_1__); +/* harmony import */ var _videojs_vhs_utils_es_media_groups__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! @videojs/vhs-utils/es/media-groups */ "./node_modules/@videojs/vhs-utils/es/media-groups.js"); +/* harmony import */ var _videojs_vhs_utils_es_decode_b64_to_uint8_array__WEBPACK_IMPORTED_MODULE_3__ = __webpack_require__(/*! @videojs/vhs-utils/es/decode-b64-to-uint8-array */ "./node_modules/@videojs/vhs-utils/es/decode-b64-to-uint8-array.js"); +/* harmony import */ var _xmldom_xmldom__WEBPACK_IMPORTED_MODULE_4__ = __webpack_require__(/*! @xmldom/xmldom */ "./node_modules/mpd-parser/node_modules/@xmldom/xmldom/lib/index.js"); +/*! @name mpd-parser @version 1.2.2 @license Apache-2.0 */ - newLine = newLine.replace('\r', ''); // Tags - match = /^#EXTM3U/.exec(newLine); - if (match) { - this.trigger('data', { - type: 'tag', - tagType: 'm3u' - }); - return; - } - match = /^#EXTINF:([0-9\.]*)?,?(.*)?$/.exec(newLine); - if (match) { - event = { - type: 'tag', - tagType: 'inf' - }; +var version = "1.2.2"; - if (match[1]) { - event.duration = parseFloat(match[1]); - } +const isObject = obj => { + return !!obj && typeof obj === 'object'; +}; - if (match[2]) { - event.title = match[2]; - } +const merge = (...objects) => { + return objects.reduce((result, source) => { + if (typeof source !== 'object') { + return result; + } - this.trigger('data', event); - return; + Object.keys(source).forEach(key => { + if (Array.isArray(result[key]) && Array.isArray(source[key])) { + result[key] = result[key].concat(source[key]); + } else if (isObject(result[key]) && isObject(source[key])) { + result[key] = merge(result[key], source[key]); + } else { + result[key] = source[key]; } + }); + return result; + }, {}); +}; +const values = o => Object.keys(o).map(k => o[k]); - match = /^#EXT-X-TARGETDURATION:([0-9.]*)?/.exec(newLine); - - if (match) { - event = { - type: 'tag', - tagType: 'targetduration' - }; +const range = (start, end) => { + const result = []; - if (match[1]) { - event.duration = parseInt(match[1], 10); - } + for (let i = start; i < end; i++) { + result.push(i); + } - this.trigger('data', event); - return; - } + return result; +}; +const flatten = lists => lists.reduce((x, y) => x.concat(y), []); +const from = list => { + if (!list.length) { + return []; + } - match = /^#EXT-X-VERSION:([0-9.]*)?/.exec(newLine); + const result = []; - if (match) { - event = { - type: 'tag', - tagType: 'version' - }; + for (let i = 0; i < list.length; i++) { + result.push(list[i]); + } - if (match[1]) { - event.version = parseInt(match[1], 10); - } + return result; +}; +const findIndexes = (l, key) => l.reduce((a, e, i) => { + if (e[key]) { + a.push(i); + } - this.trigger('data', event); - return; - } + return a; +}, []); +/** + * Returns a union of the included lists provided each element can be identified by a key. + * + * @param {Array} list - list of lists to get the union of + * @param {Function} keyFunction - the function to use as a key for each element + * + * @return {Array} the union of the arrays + */ - match = /^#EXT-X-MEDIA-SEQUENCE:(\-?[0-9.]*)?/.exec(newLine); +const union = (lists, keyFunction) => { + return values(lists.reduce((acc, list) => { + list.forEach(el => { + acc[keyFunction(el)] = el; + }); + return acc; + }, {})); +}; - if (match) { - event = { - type: 'tag', - tagType: 'media-sequence' - }; +var errors = { + INVALID_NUMBER_OF_PERIOD: 'INVALID_NUMBER_OF_PERIOD', + INVALID_NUMBER_OF_CONTENT_STEERING: 'INVALID_NUMBER_OF_CONTENT_STEERING', + DASH_EMPTY_MANIFEST: 'DASH_EMPTY_MANIFEST', + DASH_INVALID_XML: 'DASH_INVALID_XML', + NO_BASE_URL: 'NO_BASE_URL', + MISSING_SEGMENT_INFORMATION: 'MISSING_SEGMENT_INFORMATION', + SEGMENT_TIME_UNSPECIFIED: 'SEGMENT_TIME_UNSPECIFIED', + UNSUPPORTED_UTC_TIMING_SCHEME: 'UNSUPPORTED_UTC_TIMING_SCHEME' +}; - if (match[1]) { - event.number = parseInt(match[1], 10); - } +/** + * @typedef {Object} SingleUri + * @property {string} uri - relative location of segment + * @property {string} resolvedUri - resolved location of segment + * @property {Object} byterange - Object containing information on how to make byte range + * requests following byte-range-spec per RFC2616. + * @property {String} byterange.length - length of range request + * @property {String} byterange.offset - byte offset of range request + * + * @see https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35.1 + */ - this.trigger('data', event); - return; - } +/** + * Converts a URLType node (5.3.9.2.3 Table 13) to a segment object + * that conforms to how m3u8-parser is structured + * + * @see https://github.com/videojs/m3u8-parser + * + * @param {string} baseUrl - baseUrl provided by nodes + * @param {string} source - source url for segment + * @param {string} range - optional range used for range calls, + * follows RFC 2616, Clause 14.35.1 + * @return {SingleUri} full segment information transformed into a format similar + * to m3u8-parser + */ - match = /^#EXT-X-DISCONTINUITY-SEQUENCE:(\-?[0-9.]*)?/.exec(newLine); +const urlTypeToSegment = ({ + baseUrl = '', + source = '', + range = '', + indexRange = '' +}) => { + const segment = { + uri: source, + resolvedUri: (0,_videojs_vhs_utils_es_resolve_url__WEBPACK_IMPORTED_MODULE_0__["default"])(baseUrl || '', source) + }; - if (match) { - event = { - type: 'tag', - tagType: 'discontinuity-sequence' - }; + if (range || indexRange) { + const rangeStr = range ? range : indexRange; + const ranges = rangeStr.split('-'); // default to parsing this as a BigInt if possible - if (match[1]) { - event.number = parseInt(match[1], 10); - } + let startRange = (global_window__WEBPACK_IMPORTED_MODULE_1___default().BigInt) ? global_window__WEBPACK_IMPORTED_MODULE_1___default().BigInt(ranges[0]) : parseInt(ranges[0], 10); + let endRange = (global_window__WEBPACK_IMPORTED_MODULE_1___default().BigInt) ? global_window__WEBPACK_IMPORTED_MODULE_1___default().BigInt(ranges[1]) : parseInt(ranges[1], 10); // convert back to a number if less than MAX_SAFE_INTEGER - this.trigger('data', event); - return; - } + if (startRange < Number.MAX_SAFE_INTEGER && typeof startRange === 'bigint') { + startRange = Number(startRange); + } - match = /^#EXT-X-PLAYLIST-TYPE:(.*)?$/.exec(newLine); + if (endRange < Number.MAX_SAFE_INTEGER && typeof endRange === 'bigint') { + endRange = Number(endRange); + } - if (match) { - event = { - type: 'tag', - tagType: 'playlist-type' - }; + let length; - if (match[1]) { - event.playlistType = match[1]; - } + if (typeof endRange === 'bigint' || typeof startRange === 'bigint') { + length = global_window__WEBPACK_IMPORTED_MODULE_1___default().BigInt(endRange) - global_window__WEBPACK_IMPORTED_MODULE_1___default().BigInt(startRange) + global_window__WEBPACK_IMPORTED_MODULE_1___default().BigInt(1); + } else { + length = endRange - startRange + 1; + } - this.trigger('data', event); - return; - } + if (typeof length === 'bigint' && length < Number.MAX_SAFE_INTEGER) { + length = Number(length); + } // byterange should be inclusive according to + // RFC 2616, Clause 14.35.1 - match = /^#EXT-X-BYTERANGE:(.*)?$/.exec(newLine); - if (match) { - event = (0,_babel_runtime_helpers_extends__WEBPACK_IMPORTED_MODULE_1__["default"])(parseByterange(match[1]), { - type: 'tag', - tagType: 'byterange' - }); - this.trigger('data', event); - return; - } + segment.byterange = { + length, + offset: startRange + }; + } - match = /^#EXT-X-ALLOW-CACHE:(YES|NO)?/.exec(newLine); + return segment; +}; +const byteRangeToString = byterange => { + // `endRange` is one less than `offset + length` because the HTTP range + // header uses inclusive ranges + let endRange; - if (match) { - event = { - type: 'tag', - tagType: 'allow-cache' - }; + if (typeof byterange.offset === 'bigint' || typeof byterange.length === 'bigint') { + endRange = global_window__WEBPACK_IMPORTED_MODULE_1___default().BigInt(byterange.offset) + global_window__WEBPACK_IMPORTED_MODULE_1___default().BigInt(byterange.length) - global_window__WEBPACK_IMPORTED_MODULE_1___default().BigInt(1); + } else { + endRange = byterange.offset + byterange.length - 1; + } - if (match[1]) { - event.allowed = !/NO/.test(match[1]); - } + return `${byterange.offset}-${endRange}`; +}; - this.trigger('data', event); - return; - } +/** + * parse the end number attribue that can be a string + * number, or undefined. + * + * @param {string|number|undefined} endNumber + * The end number attribute. + * + * @return {number|null} + * The result of parsing the end number. + */ - match = /^#EXT-X-MAP:(.*)$/.exec(newLine); +const parseEndNumber = endNumber => { + if (endNumber && typeof endNumber !== 'number') { + endNumber = parseInt(endNumber, 10); + } - if (match) { - event = { - type: 'tag', - tagType: 'map' - }; + if (isNaN(endNumber)) { + return null; + } - if (match[1]) { - const attributes = parseAttributes(match[1]); + return endNumber; +}; +/** + * Functions for calculating the range of available segments in static and dynamic + * manifests. + */ - if (attributes.URI) { - event.uri = attributes.URI; - } - if (attributes.BYTERANGE) { - event.byterange = parseByterange(attributes.BYTERANGE); - } - } +const segmentRange = { + /** + * Returns the entire range of available segments for a static MPD + * + * @param {Object} attributes + * Inheritied MPD attributes + * @return {{ start: number, end: number }} + * The start and end numbers for available segments + */ + static(attributes) { + const { + duration, + timescale = 1, + sourceDuration, + periodDuration + } = attributes; + const endNumber = parseEndNumber(attributes.endNumber); + const segmentDuration = duration / timescale; - this.trigger('data', event); - return; - } + if (typeof endNumber === 'number') { + return { + start: 0, + end: endNumber + }; + } - match = /^#EXT-X-STREAM-INF:(.*)$/.exec(newLine); + if (typeof periodDuration === 'number') { + return { + start: 0, + end: periodDuration / segmentDuration + }; + } - if (match) { - event = { - type: 'tag', - tagType: 'stream-inf' - }; + return { + start: 0, + end: sourceDuration / segmentDuration + }; + }, - if (match[1]) { - event.attributes = parseAttributes(match[1]); + /** + * Returns the current live window range of available segments for a dynamic MPD + * + * @param {Object} attributes + * Inheritied MPD attributes + * @return {{ start: number, end: number }} + * The start and end numbers for available segments + */ + dynamic(attributes) { + const { + NOW, + clientOffset, + availabilityStartTime, + timescale = 1, + duration, + periodStart = 0, + minimumUpdatePeriod = 0, + timeShiftBufferDepth = Infinity + } = attributes; + const endNumber = parseEndNumber(attributes.endNumber); // clientOffset is passed in at the top level of mpd-parser and is an offset calculated + // after retrieving UTC server time. - if (event.attributes.RESOLUTION) { - const split = event.attributes.RESOLUTION.split('x'); - const resolution = {}; + const now = (NOW + clientOffset) / 1000; // WC stands for Wall Clock. + // Convert the period start time to EPOCH. - if (split[0]) { - resolution.width = parseInt(split[0], 10); - } + const periodStartWC = availabilityStartTime + periodStart; // Period end in EPOCH is manifest's retrieval time + time until next update. - if (split[1]) { - resolution.height = parseInt(split[1], 10); - } + const periodEndWC = now + minimumUpdatePeriod; + const periodDuration = periodEndWC - periodStartWC; + const segmentCount = Math.ceil(periodDuration * timescale / duration); + const availableStart = Math.floor((now - periodStartWC - timeShiftBufferDepth) * timescale / duration); + const availableEnd = Math.floor((now - periodStartWC) * timescale / duration); + return { + start: Math.max(0, availableStart), + end: typeof endNumber === 'number' ? endNumber : Math.min(segmentCount, availableEnd) + }; + } - event.attributes.RESOLUTION = resolution; - } +}; +/** + * Maps a range of numbers to objects with information needed to build the corresponding + * segment list + * + * @name toSegmentsCallback + * @function + * @param {number} number + * Number of the segment + * @param {number} index + * Index of the number in the range list + * @return {{ number: Number, duration: Number, timeline: Number, time: Number }} + * Object with segment timing and duration info + */ - if (event.attributes.BANDWIDTH) { - event.attributes.BANDWIDTH = parseInt(event.attributes.BANDWIDTH, 10); - } +/** + * Returns a callback for Array.prototype.map for mapping a range of numbers to + * information needed to build the segment list. + * + * @param {Object} attributes + * Inherited MPD attributes + * @return {toSegmentsCallback} + * Callback map function + */ - if (event.attributes['FRAME-RATE']) { - event.attributes['FRAME-RATE'] = parseFloat(event.attributes['FRAME-RATE']); - } +const toSegments = attributes => number => { + const { + duration, + timescale = 1, + periodStart, + startNumber = 1 + } = attributes; + return { + number: startNumber + number, + duration: duration / timescale, + timeline: periodStart, + time: number * duration + }; +}; +/** + * Returns a list of objects containing segment timing and duration info used for + * building the list of segments. This uses the @duration attribute specified + * in the MPD manifest to derive the range of segments. + * + * @param {Object} attributes + * Inherited MPD attributes + * @return {{number: number, duration: number, time: number, timeline: number}[]} + * List of Objects with segment timing and duration info + */ - if (event.attributes['PROGRAM-ID']) { - event.attributes['PROGRAM-ID'] = parseInt(event.attributes['PROGRAM-ID'], 10); - } - } +const parseByDuration = attributes => { + const { + type, + duration, + timescale = 1, + periodDuration, + sourceDuration + } = attributes; + const { + start, + end + } = segmentRange[type](attributes); + const segments = range(start, end).map(toSegments(attributes)); - this.trigger('data', event); - return; - } + if (type === 'static') { + const index = segments.length - 1; // section is either a period or the full source - match = /^#EXT-X-MEDIA:(.*)$/.exec(newLine); + const sectionDuration = typeof periodDuration === 'number' ? periodDuration : sourceDuration; // final segment may be less than full segment duration - if (match) { - event = { - type: 'tag', - tagType: 'media' - }; + segments[index].duration = sectionDuration - duration / timescale * index; + } - if (match[1]) { - event.attributes = parseAttributes(match[1]); - } + return segments; +}; - this.trigger('data', event); - return; - } +/** + * Translates SegmentBase into a set of segments. + * (DASH SPEC Section 5.3.9.3.2) contains a set of nodes. Each + * node should be translated into segment. + * + * @param {Object} attributes + * Object containing all inherited attributes from parent elements with attribute + * names as keys + * @return {Object.} list of segments + */ - match = /^#EXT-X-ENDLIST/.exec(newLine); +const segmentsFromBase = attributes => { + const { + baseUrl, + initialization = {}, + sourceDuration, + indexRange = '', + periodStart, + presentationTime, + number = 0, + duration + } = attributes; // base url is required for SegmentBase to work, per spec (Section 5.3.9.2.1) - if (match) { - this.trigger('data', { - type: 'tag', - tagType: 'endlist' - }); - return; - } + if (!baseUrl) { + throw new Error(errors.NO_BASE_URL); + } - match = /^#EXT-X-DISCONTINUITY/.exec(newLine); + const initSegment = urlTypeToSegment({ + baseUrl, + source: initialization.sourceURL, + range: initialization.range + }); + const segment = urlTypeToSegment({ + baseUrl, + source: baseUrl, + indexRange + }); + segment.map = initSegment; // If there is a duration, use it, otherwise use the given duration of the source + // (since SegmentBase is only for one total segment) - if (match) { - this.trigger('data', { - type: 'tag', - tagType: 'discontinuity' - }); - return; - } + if (duration) { + const segmentTimeInfo = parseByDuration(attributes); - match = /^#EXT-X-PROGRAM-DATE-TIME:(.*)$/.exec(newLine); + if (segmentTimeInfo.length) { + segment.duration = segmentTimeInfo[0].duration; + segment.timeline = segmentTimeInfo[0].timeline; + } + } else if (sourceDuration) { + segment.duration = sourceDuration; + segment.timeline = periodStart; + } // If presentation time is provided, these segments are being generated by SIDX + // references, and should use the time provided. For the general case of SegmentBase, + // there should only be one segment in the period, so its presentation time is the same + // as its period start. - if (match) { - event = { - type: 'tag', - tagType: 'program-date-time' - }; - if (match[1]) { - event.dateTimeString = match[1]; - event.dateTimeObject = new Date(match[1]); - } + segment.presentationTime = presentationTime || periodStart; + segment.number = number; + return [segment]; +}; +/** + * Given a playlist, a sidx box, and a baseUrl, update the segment list of the playlist + * according to the sidx information given. + * + * playlist.sidx has metadadata about the sidx where-as the sidx param + * is the parsed sidx box itself. + * + * @param {Object} playlist the playlist to update the sidx information for + * @param {Object} sidx the parsed sidx box + * @return {Object} the playlist object with the updated sidx information + */ - this.trigger('data', event); - return; - } +const addSidxSegmentsToPlaylist$1 = (playlist, sidx, baseUrl) => { + // Retain init segment information + const initSegment = playlist.sidx.map ? playlist.sidx.map : null; // Retain source duration from initial main manifest parsing - match = /^#EXT-X-KEY:(.*)$/.exec(newLine); + const sourceDuration = playlist.sidx.duration; // Retain source timeline - if (match) { - event = { - type: 'tag', - tagType: 'key' - }; + const timeline = playlist.timeline || 0; + const sidxByteRange = playlist.sidx.byterange; + const sidxEnd = sidxByteRange.offset + sidxByteRange.length; // Retain timescale of the parsed sidx - if (match[1]) { - event.attributes = parseAttributes(match[1]); // parse the IV string into a Uint32Array + const timescale = sidx.timescale; // referenceType 1 refers to other sidx boxes - if (event.attributes.IV) { - if (event.attributes.IV.substring(0, 2).toLowerCase() === '0x') { - event.attributes.IV = event.attributes.IV.substring(2); - } + const mediaReferences = sidx.references.filter(r => r.referenceType !== 1); + const segments = []; + const type = playlist.endList ? 'static' : 'dynamic'; + const periodStart = playlist.sidx.timeline; + let presentationTime = periodStart; + let number = playlist.mediaSequence || 0; // firstOffset is the offset from the end of the sidx box - event.attributes.IV = event.attributes.IV.match(/.{8}/g); - event.attributes.IV[0] = parseInt(event.attributes.IV[0], 16); - event.attributes.IV[1] = parseInt(event.attributes.IV[1], 16); - event.attributes.IV[2] = parseInt(event.attributes.IV[2], 16); - event.attributes.IV[3] = parseInt(event.attributes.IV[3], 16); - event.attributes.IV = new Uint32Array(event.attributes.IV); - } - } + let startIndex; // eslint-disable-next-line - this.trigger('data', event); - return; - } + if (typeof sidx.firstOffset === 'bigint') { + startIndex = global_window__WEBPACK_IMPORTED_MODULE_1___default().BigInt(sidxEnd) + sidx.firstOffset; + } else { + startIndex = sidxEnd + sidx.firstOffset; + } - match = /^#EXT-X-START:(.*)$/.exec(newLine); + for (let i = 0; i < mediaReferences.length; i++) { + const reference = sidx.references[i]; // size of the referenced (sub)segment - if (match) { - event = { - type: 'tag', - tagType: 'start' - }; + const size = reference.referencedSize; // duration of the referenced (sub)segment, in the timescale + // this will be converted to seconds when generating segments - if (match[1]) { - event.attributes = parseAttributes(match[1]); - event.attributes['TIME-OFFSET'] = parseFloat(event.attributes['TIME-OFFSET']); - event.attributes.PRECISE = /YES/.test(event.attributes.PRECISE); - } + const duration = reference.subsegmentDuration; // should be an inclusive range - this.trigger('data', event); - return; - } + let endIndex; // eslint-disable-next-line - match = /^#EXT-X-CUE-OUT-CONT:(.*)?$/.exec(newLine); + if (typeof startIndex === 'bigint') { + endIndex = startIndex + global_window__WEBPACK_IMPORTED_MODULE_1___default().BigInt(size) - global_window__WEBPACK_IMPORTED_MODULE_1___default().BigInt(1); + } else { + endIndex = startIndex + size - 1; + } - if (match) { - event = { - type: 'tag', - tagType: 'cue-out-cont' - }; + const indexRange = `${startIndex}-${endIndex}`; + const attributes = { + baseUrl, + timescale, + timeline, + periodStart, + presentationTime, + number, + duration, + sourceDuration, + indexRange, + type + }; + const segment = segmentsFromBase(attributes)[0]; - if (match[1]) { - event.data = match[1]; - } else { - event.data = ''; - } + if (initSegment) { + segment.map = initSegment; + } - this.trigger('data', event); - return; - } + segments.push(segment); - match = /^#EXT-X-CUE-OUT:(.*)?$/.exec(newLine); + if (typeof startIndex === 'bigint') { + startIndex += global_window__WEBPACK_IMPORTED_MODULE_1___default().BigInt(size); + } else { + startIndex += size; + } - if (match) { - event = { - type: 'tag', - tagType: 'cue-out' - }; + presentationTime += duration / timescale; + number++; + } - if (match[1]) { - event.data = match[1]; - } else { - event.data = ''; - } + playlist.segments = segments; + return playlist; +}; - this.trigger('data', event); - return; - } +const SUPPORTED_MEDIA_TYPES = ['AUDIO', 'SUBTITLES']; // allow one 60fps frame as leniency (arbitrarily chosen) - match = /^#EXT-X-CUE-IN:(.*)?$/.exec(newLine); +const TIME_FUDGE = 1 / 60; +/** + * Given a list of timelineStarts, combines, dedupes, and sorts them. + * + * @param {TimelineStart[]} timelineStarts - list of timeline starts + * + * @return {TimelineStart[]} the combined and deduped timeline starts + */ - if (match) { - event = { - type: 'tag', - tagType: 'cue-in' - }; +const getUniqueTimelineStarts = timelineStarts => { + return union(timelineStarts, ({ + timeline + }) => timeline).sort((a, b) => a.timeline > b.timeline ? 1 : -1); +}; +/** + * Finds the playlist with the matching NAME attribute. + * + * @param {Array} playlists - playlists to search through + * @param {string} name - the NAME attribute to search for + * + * @return {Object|null} the matching playlist object, or null + */ - if (match[1]) { - event.data = match[1]; - } else { - event.data = ''; - } +const findPlaylistWithName = (playlists, name) => { + for (let i = 0; i < playlists.length; i++) { + if (playlists[i].attributes.NAME === name) { + return playlists[i]; + } + } - this.trigger('data', event); - return; - } + return null; +}; +/** + * Gets a flattened array of media group playlists. + * + * @param {Object} manifest - the main manifest object + * + * @return {Array} the media group playlists + */ - match = /^#EXT-X-SKIP:(.*)$/.exec(newLine); +const getMediaGroupPlaylists = manifest => { + let mediaGroupPlaylists = []; + (0,_videojs_vhs_utils_es_media_groups__WEBPACK_IMPORTED_MODULE_2__.forEachMediaGroup)(manifest, SUPPORTED_MEDIA_TYPES, (properties, type, group, label) => { + mediaGroupPlaylists = mediaGroupPlaylists.concat(properties.playlists || []); + }); + return mediaGroupPlaylists; +}; +/** + * Updates the playlist's media sequence numbers. + * + * @param {Object} config - options object + * @param {Object} config.playlist - the playlist to update + * @param {number} config.mediaSequence - the mediaSequence number to start with + */ - if (match && match[1]) { - event = { - type: 'tag', - tagType: 'skip' - }; - event.attributes = parseAttributes(match[1]); +const updateMediaSequenceForPlaylist = ({ + playlist, + mediaSequence +}) => { + playlist.mediaSequence = mediaSequence; + playlist.segments.forEach((segment, index) => { + segment.number = playlist.mediaSequence + index; + }); +}; +/** + * Updates the media and discontinuity sequence numbers of newPlaylists given oldPlaylists + * and a complete list of timeline starts. + * + * If no matching playlist is found, only the discontinuity sequence number of the playlist + * will be updated. + * + * Since early available timelines are not supported, at least one segment must be present. + * + * @param {Object} config - options object + * @param {Object[]} oldPlaylists - the old playlists to use as a reference + * @param {Object[]} newPlaylists - the new playlists to update + * @param {Object} timelineStarts - all timelineStarts seen in the stream to this point + */ - if (event.attributes.hasOwnProperty('SKIPPED-SEGMENTS')) { - event.attributes['SKIPPED-SEGMENTS'] = parseInt(event.attributes['SKIPPED-SEGMENTS'], 10); - } +const updateSequenceNumbers = ({ + oldPlaylists, + newPlaylists, + timelineStarts +}) => { + newPlaylists.forEach(playlist => { + playlist.discontinuitySequence = timelineStarts.findIndex(function ({ + timeline + }) { + return timeline === playlist.timeline; + }); // Playlists NAMEs come from DASH Representation IDs, which are mandatory + // (see ISO_23009-1-2012 5.3.5.2). + // + // If the same Representation existed in a prior Period, it will retain the same NAME. - if (event.attributes.hasOwnProperty('RECENTLY-REMOVED-DATERANGES')) { - event.attributes['RECENTLY-REMOVED-DATERANGES'] = event.attributes['RECENTLY-REMOVED-DATERANGES'].split(TAB); - } + const oldPlaylist = findPlaylistWithName(oldPlaylists, playlist.attributes.NAME); - this.trigger('data', event); - return; - } + if (!oldPlaylist) { + // Since this is a new playlist, the media sequence values can start from 0 without + // consequence. + return; + } // TODO better support for live SIDX + // + // As of this writing, mpd-parser does not support multiperiod SIDX (in live or VOD). + // This is evident by a playlist only having a single SIDX reference. In a multiperiod + // playlist there would need to be multiple SIDX references. In addition, live SIDX is + // not supported when the SIDX properties change on refreshes. + // + // In the future, if support needs to be added, the merging logic here can be called + // after SIDX references are resolved. For now, exit early to prevent exceptions being + // thrown due to undefined references. - match = /^#EXT-X-PART:(.*)$/.exec(newLine); - if (match && match[1]) { - event = { - type: 'tag', - tagType: 'part' - }; - event.attributes = parseAttributes(match[1]); - ['DURATION'].forEach(function (key) { - if (event.attributes.hasOwnProperty(key)) { - event.attributes[key] = parseFloat(event.attributes[key]); - } - }); - ['INDEPENDENT', 'GAP'].forEach(function (key) { - if (event.attributes.hasOwnProperty(key)) { - event.attributes[key] = /YES/.test(event.attributes[key]); - } - }); + if (playlist.sidx) { + return; + } // Since we don't yet support early available timelines, we don't need to support + // playlists with no segments. - if (event.attributes.hasOwnProperty('BYTERANGE')) { - event.attributes.byterange = parseByterange(event.attributes.BYTERANGE); - } - this.trigger('data', event); - return; - } + const firstNewSegment = playlist.segments[0]; + const oldMatchingSegmentIndex = oldPlaylist.segments.findIndex(function (oldSegment) { + return Math.abs(oldSegment.presentationTime - firstNewSegment.presentationTime) < TIME_FUDGE; + }); // No matching segment from the old playlist means the entire playlist was refreshed. + // In this case the media sequence should account for this update, and the new segments + // should be marked as discontinuous from the prior content, since the last prior + // timeline was removed. - match = /^#EXT-X-SERVER-CONTROL:(.*)$/.exec(newLine); + if (oldMatchingSegmentIndex === -1) { + updateMediaSequenceForPlaylist({ + playlist, + mediaSequence: oldPlaylist.mediaSequence + oldPlaylist.segments.length + }); + playlist.segments[0].discontinuity = true; + playlist.discontinuityStarts.unshift(0); // No matching segment does not necessarily mean there's missing content. + // + // If the new playlist's timeline is the same as the last seen segment's timeline, + // then a discontinuity can be added to identify that there's potentially missing + // content. If there's no missing content, the discontinuity should still be rather + // harmless. It's possible that if segment durations are accurate enough, that the + // existence of a gap can be determined using the presentation times and durations, + // but if the segment timing info is off, it may introduce more problems than simply + // adding the discontinuity. + // + // If the new playlist's timeline is different from the last seen segment's timeline, + // then a discontinuity can be added to identify that this is the first seen segment + // of a new timeline. However, the logic at the start of this function that + // determined the disconinuity sequence by timeline index is now off by one (the + // discontinuity of the newest timeline hasn't yet fallen off the manifest...since + // we added it), so the disconinuity sequence must be decremented. + // + // A period may also have a duration of zero, so the case of no segments is handled + // here even though we don't yet support early available periods. - if (match && match[1]) { - event = { - type: 'tag', - tagType: 'server-control' - }; - event.attributes = parseAttributes(match[1]); - ['CAN-SKIP-UNTIL', 'PART-HOLD-BACK', 'HOLD-BACK'].forEach(function (key) { - if (event.attributes.hasOwnProperty(key)) { - event.attributes[key] = parseFloat(event.attributes[key]); - } - }); - ['CAN-SKIP-DATERANGES', 'CAN-BLOCK-RELOAD'].forEach(function (key) { - if (event.attributes.hasOwnProperty(key)) { - event.attributes[key] = /YES/.test(event.attributes[key]); - } - }); - this.trigger('data', event); - return; + if (!oldPlaylist.segments.length && playlist.timeline > oldPlaylist.timeline || oldPlaylist.segments.length && playlist.timeline > oldPlaylist.segments[oldPlaylist.segments.length - 1].timeline) { + playlist.discontinuitySequence--; } - match = /^#EXT-X-PART-INF:(.*)$/.exec(newLine); - - if (match && match[1]) { - event = { - type: 'tag', - tagType: 'part-inf' - }; - event.attributes = parseAttributes(match[1]); - ['PART-TARGET'].forEach(function (key) { - if (event.attributes.hasOwnProperty(key)) { - event.attributes[key] = parseFloat(event.attributes[key]); - } - }); - this.trigger('data', event); - return; - } + return; + } // If the first segment matched with a prior segment on a discontinuity (it's matching + // on the first segment of a period), then the discontinuitySequence shouldn't be the + // timeline's matching one, but instead should be the one prior, and the first segment + // of the new manifest should be marked with a discontinuity. + // + // The reason for this special case is that discontinuity sequence shows how many + // discontinuities have fallen off of the playlist, and discontinuities are marked on + // the first segment of a new "timeline." Because of this, while DASH will retain that + // Period while the "timeline" exists, HLS keeps track of it via the discontinuity + // sequence, and that first segment is an indicator, but can be removed before that + // timeline is gone. - match = /^#EXT-X-PRELOAD-HINT:(.*)$/.exec(newLine); - if (match && match[1]) { - event = { - type: 'tag', - tagType: 'preload-hint' - }; - event.attributes = parseAttributes(match[1]); - ['BYTERANGE-START', 'BYTERANGE-LENGTH'].forEach(function (key) { - if (event.attributes.hasOwnProperty(key)) { - event.attributes[key] = parseInt(event.attributes[key], 10); - const subkey = key === 'BYTERANGE-LENGTH' ? 'length' : 'offset'; - event.attributes.byterange = event.attributes.byterange || {}; - event.attributes.byterange[subkey] = event.attributes[key]; // only keep the parsed byterange object. + const oldMatchingSegment = oldPlaylist.segments[oldMatchingSegmentIndex]; - delete event.attributes[key]; - } - }); - this.trigger('data', event); - return; - } + if (oldMatchingSegment.discontinuity && !firstNewSegment.discontinuity) { + firstNewSegment.discontinuity = true; + playlist.discontinuityStarts.unshift(0); + playlist.discontinuitySequence--; + } - match = /^#EXT-X-RENDITION-REPORT:(.*)$/.exec(newLine); + updateMediaSequenceForPlaylist({ + playlist, + mediaSequence: oldPlaylist.segments[oldMatchingSegmentIndex].number + }); + }); +}; +/** + * Given an old parsed manifest object and a new parsed manifest object, updates the + * sequence and timing values within the new manifest to ensure that it lines up with the + * old. + * + * @param {Array} oldManifest - the old main manifest object + * @param {Array} newManifest - the new main manifest object + * + * @return {Object} the updated new manifest object + */ - if (match && match[1]) { - event = { - type: 'tag', - tagType: 'rendition-report' - }; - event.attributes = parseAttributes(match[1]); - ['LAST-MSN', 'LAST-PART'].forEach(function (key) { - if (event.attributes.hasOwnProperty(key)) { - event.attributes[key] = parseInt(event.attributes[key], 10); - } - }); - this.trigger('data', event); - return; - } +const positionManifestOnTimeline = ({ + oldManifest, + newManifest +}) => { + // Starting from v4.1.2 of the IOP, section 4.4.3.3 states: + // + // "MPD@availabilityStartTime and Period@start shall not be changed over MPD updates." + // + // This was added from https://github.com/Dash-Industry-Forum/DASH-IF-IOP/issues/160 + // + // Because of this change, and the difficulty of supporting periods with changing start + // times, periods with changing start times are not supported. This makes the logic much + // simpler, since periods with the same start time can be considerred the same period + // across refreshes. + // + // To give an example as to the difficulty of handling periods where the start time may + // change, if a single period manifest is refreshed with another manifest with a single + // period, and both the start and end times are increased, then the only way to determine + // if it's a new period or an old one that has changed is to look through the segments of + // each playlist and determine the presentation time bounds to find a match. In addition, + // if the period start changed to exceed the old period end, then there would be no + // match, and it would not be possible to determine whether the refreshed period is a new + // one or the old one. + const oldPlaylists = oldManifest.playlists.concat(getMediaGroupPlaylists(oldManifest)); + const newPlaylists = newManifest.playlists.concat(getMediaGroupPlaylists(newManifest)); // Save all seen timelineStarts to the new manifest. Although this potentially means that + // there's a "memory leak" in that it will never stop growing, in reality, only a couple + // of properties are saved for each seen Period. Even long running live streams won't + // generate too many Periods, unless the stream is watched for decades. In the future, + // this can be optimized by mapping to discontinuity sequence numbers for each timeline, + // but it may not become an issue, and the additional info can be useful for debugging. - match = /^#EXT-X-DATERANGE:(.*)$/.exec(newLine); + newManifest.timelineStarts = getUniqueTimelineStarts([oldManifest.timelineStarts, newManifest.timelineStarts]); + updateSequenceNumbers({ + oldPlaylists, + newPlaylists, + timelineStarts: newManifest.timelineStarts + }); + return newManifest; +}; - if (match && match[1]) { - event = { - type: 'tag', - tagType: 'daterange' - }; - event.attributes = parseAttributes(match[1]); - ['ID', 'CLASS'].forEach(function (key) { - if (event.attributes.hasOwnProperty(key)) { - event.attributes[key] = String(event.attributes[key]); - } - }); - ['START-DATE', 'END-DATE'].forEach(function (key) { - if (event.attributes.hasOwnProperty(key)) { - event.attributes[key] = new Date(event.attributes[key]); - } - }); - ['DURATION', 'PLANNED-DURATION'].forEach(function (key) { - if (event.attributes.hasOwnProperty(key)) { - event.attributes[key] = parseFloat(event.attributes[key]); - } - }); - ['END-ON-NEXT'].forEach(function (key) { - if (event.attributes.hasOwnProperty(key)) { - event.attributes[key] = /YES/i.test(event.attributes[key]); - } - }); - ['SCTE35-CMD', ' SCTE35-OUT', 'SCTE35-IN'].forEach(function (key) { - if (event.attributes.hasOwnProperty(key)) { - event.attributes[key] = event.attributes[key].toString(16); - } - }); - const clientAttributePattern = /^X-([A-Z]+-)+[A-Z]+$/; +const generateSidxKey = sidx => sidx && sidx.uri + '-' + byteRangeToString(sidx.byterange); - for (const key in event.attributes) { - if (!clientAttributePattern.test(key)) { - continue; - } +const mergeDiscontiguousPlaylists = playlists => { + // Break out playlists into groups based on their baseUrl + const playlistsByBaseUrl = playlists.reduce(function (acc, cur) { + if (!acc[cur.attributes.baseUrl]) { + acc[cur.attributes.baseUrl] = []; + } - const isHexaDecimal = /[0-9A-Fa-f]{6}/g.test(event.attributes[key]); - const isDecimalFloating = /^\d+(\.\d+)?$/.test(event.attributes[key]); - event.attributes[key] = isHexaDecimal ? event.attributes[key].toString(16) : isDecimalFloating ? parseFloat(event.attributes[key]) : String(event.attributes[key]); - } + acc[cur.attributes.baseUrl].push(cur); + return acc; + }, {}); + let allPlaylists = []; + Object.values(playlistsByBaseUrl).forEach(playlistGroup => { + const mergedPlaylists = values(playlistGroup.reduce((acc, playlist) => { + // assuming playlist IDs are the same across periods + // TODO: handle multiperiod where representation sets are not the same + // across periods + const name = playlist.attributes.id + (playlist.attributes.lang || ''); - this.trigger('data', event); - return; - } + if (!acc[name]) { + // First Period + acc[name] = playlist; + acc[name].attributes.timelineStarts = []; + } else { + // Subsequent Periods + if (playlist.segments) { + // first segment of subsequent periods signal a discontinuity + if (playlist.segments[0]) { + playlist.segments[0].discontinuity = true; + } - match = /^#EXT-X-INDEPENDENT-SEGMENTS/.exec(newLine); + acc[name].segments.push(...playlist.segments); + } // bubble up contentProtection, this assumes all DRM content + // has the same contentProtection - if (match) { - this.trigger('data', { - type: 'tag', - tagType: 'independent-segments' - }); - return; - } // unknown tag type + if (playlist.attributes.contentProtection) { + acc[name].attributes.contentProtection = playlist.attributes.contentProtection; + } + } - this.trigger('data', { - type: 'tag', - data: newLine.slice(4) + acc[name].attributes.timelineStarts.push({ + // Although they represent the same number, it's important to have both to make it + // compatible with HLS potentially having a similar attribute. + start: playlist.attributes.periodStart, + timeline: playlist.attributes.periodStart }); - }); - } - /** - * Add a parser for custom headers - * - * @param {Object} options a map of options for the added parser - * @param {RegExp} options.expression a regular expression to match the custom header - * @param {string} options.customType the custom type to register to the output - * @param {Function} [options.dataParser] function to parse the line into an object - * @param {boolean} [options.segment] should tag data be attached to the segment object - */ - + return acc; + }, {})); + allPlaylists = allPlaylists.concat(mergedPlaylists); + }); + return allPlaylists.map(playlist => { + playlist.discontinuityStarts = findIndexes(playlist.segments || [], 'discontinuity'); + return playlist; + }); +}; - addParser({ - expression, - customType, - dataParser, - segment - }) { - if (typeof dataParser !== 'function') { - dataParser = line => line; - } +const addSidxSegmentsToPlaylist = (playlist, sidxMapping) => { + const sidxKey = generateSidxKey(playlist.sidx); + const sidxMatch = sidxKey && sidxMapping[sidxKey] && sidxMapping[sidxKey].sidx; - this.customParsers.push(line => { - const match = expression.exec(line); + if (sidxMatch) { + addSidxSegmentsToPlaylist$1(playlist, sidxMatch, playlist.sidx.resolvedUri); + } - if (match) { - this.trigger('data', { - type: 'custom', - data: dataParser(line), - customType, - segment - }); - return true; - } - }); + return playlist; +}; +const addSidxSegmentsToPlaylists = (playlists, sidxMapping = {}) => { + if (!Object.keys(sidxMapping).length) { + return playlists; } - /** - * Add a custom header mapper - * - * @param {Object} options - * @param {RegExp} options.expression a regular expression to match the custom header - * @param {Function} options.map function to translate tag into a different tag - */ + for (const i in playlists) { + playlists[i] = addSidxSegmentsToPlaylist(playlists[i], sidxMapping); + } - addTagMapper({ - expression, - map - }) { - const mapFn = line => { - if (expression.test(line)) { - return map(line); - } + return playlists; +}; +const formatAudioPlaylist = ({ + attributes, + segments, + sidx, + mediaSequence, + discontinuitySequence, + discontinuityStarts +}, isAudioOnly) => { + const playlist = { + attributes: { + NAME: attributes.id, + BANDWIDTH: attributes.bandwidth, + CODECS: attributes.codecs, + ['PROGRAM-ID']: 1 + }, + uri: '', + endList: attributes.type === 'static', + timeline: attributes.periodStart, + resolvedUri: attributes.baseUrl || '', + targetDuration: attributes.duration, + discontinuitySequence, + discontinuityStarts, + timelineStarts: attributes.timelineStarts, + mediaSequence, + segments + }; - return line; - }; + if (attributes.contentProtection) { + playlist.contentProtection = attributes.contentProtection; + } - this.tagMappers.push(mapFn); + if (attributes.serviceLocation) { + playlist.attributes.serviceLocation = attributes.serviceLocation; } -} + if (sidx) { + playlist.sidx = sidx; + } -const camelCase = str => str.toLowerCase().replace(/-(\w)/g, a => a[1].toUpperCase()); + if (isAudioOnly) { + playlist.attributes.AUDIO = 'audio'; + playlist.attributes.SUBTITLES = 'subs'; + } -const camelCaseKeys = function (attributes) { - const result = {}; - Object.keys(attributes).forEach(function (key) { - result[camelCase(key)] = attributes[key]; - }); - return result; -}; // set SERVER-CONTROL hold back based upon targetDuration and partTargetDuration -// we need this helper because defaults are based upon targetDuration and -// partTargetDuration being set, but they may not be if SERVER-CONTROL appears before -// target durations are set. + return playlist; +}; +const formatVttPlaylist = ({ + attributes, + segments, + mediaSequence, + discontinuityStarts, + discontinuitySequence +}) => { + if (typeof segments === 'undefined') { + // vtt tracks may use single file in BaseURL + segments = [{ + uri: attributes.baseUrl, + timeline: attributes.periodStart, + resolvedUri: attributes.baseUrl || '', + duration: attributes.sourceDuration, + number: 0 + }]; // targetDuration should be the same duration as the only segment + attributes.duration = attributes.sourceDuration; + } -const setHoldBack = function (manifest) { - const { - serverControl, - targetDuration, - partTargetDuration - } = manifest; + const m3u8Attributes = { + NAME: attributes.id, + BANDWIDTH: attributes.bandwidth, + ['PROGRAM-ID']: 1 + }; - if (!serverControl) { - return; + if (attributes.codecs) { + m3u8Attributes.CODECS = attributes.codecs; } - const tag = '#EXT-X-SERVER-CONTROL'; - const hb = 'holdBack'; - const phb = 'partHoldBack'; - const minTargetDuration = targetDuration && targetDuration * 3; - const minPartDuration = partTargetDuration && partTargetDuration * 2; + const vttPlaylist = { + attributes: m3u8Attributes, + uri: '', + endList: attributes.type === 'static', + timeline: attributes.periodStart, + resolvedUri: attributes.baseUrl || '', + targetDuration: attributes.duration, + timelineStarts: attributes.timelineStarts, + discontinuityStarts, + discontinuitySequence, + mediaSequence, + segments + }; - if (targetDuration && !serverControl.hasOwnProperty(hb)) { - serverControl[hb] = minTargetDuration; - this.trigger('info', { - message: `${tag} defaulting HOLD-BACK to targetDuration * 3 (${minTargetDuration}).` - }); + if (attributes.serviceLocation) { + vttPlaylist.attributes.serviceLocation = attributes.serviceLocation; } - if (minTargetDuration && serverControl[hb] < minTargetDuration) { - this.trigger('warn', { - message: `${tag} clamping HOLD-BACK (${serverControl[hb]}) to targetDuration * 3 (${minTargetDuration})` - }); - serverControl[hb] = minTargetDuration; - } // default no part hold back to part target duration * 3 + return vttPlaylist; +}; +const organizeAudioPlaylists = (playlists, sidxMapping = {}, isAudioOnly = false) => { + let mainPlaylist; + const formattedPlaylists = playlists.reduce((a, playlist) => { + const role = playlist.attributes.role && playlist.attributes.role.value || ''; + const language = playlist.attributes.lang || ''; + let label = playlist.attributes.label || 'main'; + if (language && !playlist.attributes.label) { + const roleLabel = role ? ` (${role})` : ''; + label = `${playlist.attributes.lang}${roleLabel}`; + } - if (partTargetDuration && !serverControl.hasOwnProperty(phb)) { - serverControl[phb] = partTargetDuration * 3; - this.trigger('info', { - message: `${tag} defaulting PART-HOLD-BACK to partTargetDuration * 3 (${serverControl[phb]}).` - }); - } // if part hold back is too small default it to part target duration * 2 + if (!a[label]) { + a[label] = { + language, + autoselect: true, + default: role === 'main', + playlists: [], + uri: '' + }; + } + const formatted = addSidxSegmentsToPlaylist(formatAudioPlaylist(playlist, isAudioOnly), sidxMapping); + a[label].playlists.push(formatted); - if (partTargetDuration && serverControl[phb] < minPartDuration) { - this.trigger('warn', { - message: `${tag} clamping PART-HOLD-BACK (${serverControl[phb]}) to partTargetDuration * 2 (${minPartDuration}).` - }); - serverControl[phb] = minPartDuration; - } -}; -/** - * A parser for M3U8 files. The current interpretation of the input is - * exposed as a property `manifest` on parser objects. It's just two lines to - * create and parse a manifest once you have the contents available as a string: - * - * ```js - * var parser = new m3u8.Parser(); - * parser.push(xhr.responseText); - * ``` - * - * New input can later be applied to update the manifest object by calling - * `push` again. - * - * The parser attempts to create a usable manifest object even if the - * underlying input is somewhat nonsensical. It emits `info` and `warning` - * events during the parse if it encounters input that seems invalid or - * requires some property of the manifest object to be defaulted. - * - * @class Parser - * @extends Stream - */ - + if (typeof mainPlaylist === 'undefined' && role === 'main') { + mainPlaylist = playlist; + mainPlaylist.default = true; + } -class Parser extends _videojs_vhs_utils_es_stream_js__WEBPACK_IMPORTED_MODULE_0__["default"] { - constructor() { - super(); - this.lineStream = new LineStream(); - this.parseStream = new ParseStream(); - this.lineStream.pipe(this.parseStream); - /* eslint-disable consistent-this */ + return a; + }, {}); // if no playlists have role "main", mark the first as main - const self = this; - /* eslint-enable consistent-this */ + if (!mainPlaylist) { + const firstLabel = Object.keys(formattedPlaylists)[0]; + formattedPlaylists[firstLabel].default = true; + } - const uris = []; - let currentUri = {}; // if specified, the active EXT-X-MAP definition + return formattedPlaylists; +}; +const organizeVttPlaylists = (playlists, sidxMapping = {}) => { + return playlists.reduce((a, playlist) => { + const label = playlist.attributes.label || playlist.attributes.lang || 'text'; - let currentMap; // if specified, the active decryption key + if (!a[label]) { + a[label] = { + language: label, + default: false, + autoselect: false, + playlists: [], + uri: '' + }; + } - let key; - let hasParts = false; + a[label].playlists.push(addSidxSegmentsToPlaylist(formatVttPlaylist(playlist), sidxMapping)); + return a; + }, {}); +}; - const noop = function () {}; +const organizeCaptionServices = captionServices => captionServices.reduce((svcObj, svc) => { + if (!svc) { + return svcObj; + } - const defaultMediaGroups = { - 'AUDIO': {}, - 'VIDEO': {}, - 'CLOSED-CAPTIONS': {}, - 'SUBTITLES': {} - }; // This is the Widevine UUID from DASH IF IOP. The same exact string is - // used in MPDs with Widevine encrypted streams. + svc.forEach(service => { + const { + channel, + language + } = service; + svcObj[language] = { + autoselect: false, + default: false, + instreamId: channel, + language + }; - const widevineUuid = 'urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed'; // group segments into numbered timelines delineated by discontinuities + if (service.hasOwnProperty('aspectRatio')) { + svcObj[language].aspectRatio = service.aspectRatio; + } - let currentTimeline = 0; // the manifest is empty until the parse stream begins delivering data + if (service.hasOwnProperty('easyReader')) { + svcObj[language].easyReader = service.easyReader; + } - this.manifest = { - allowCache: true, - discontinuityStarts: [], - segments: [] - }; // keep track of the last seen segment's byte range end, as segments are not required - // to provide the offset, in which case it defaults to the next byte after the - // previous segment + if (service.hasOwnProperty('3D')) { + svcObj[language]['3D'] = service['3D']; + } + }); + return svcObj; +}, {}); - let lastByterangeEnd = 0; // keep track of the last seen part's byte range end. +const formatVideoPlaylist = ({ + attributes, + segments, + sidx, + discontinuityStarts +}) => { + const playlist = { + attributes: { + NAME: attributes.id, + AUDIO: 'audio', + SUBTITLES: 'subs', + RESOLUTION: { + width: attributes.width, + height: attributes.height + }, + CODECS: attributes.codecs, + BANDWIDTH: attributes.bandwidth, + ['PROGRAM-ID']: 1 + }, + uri: '', + endList: attributes.type === 'static', + timeline: attributes.periodStart, + resolvedUri: attributes.baseUrl || '', + targetDuration: attributes.duration, + discontinuityStarts, + timelineStarts: attributes.timelineStarts, + segments + }; - let lastPartByterangeEnd = 0; - const daterangeTags = {}; - this.on('end', () => { - // only add preloadSegment if we don't yet have a uri for it. - // and we actually have parts/preloadHints - if (currentUri.uri || !currentUri.parts && !currentUri.preloadHints) { - return; - } + if (attributes.frameRate) { + playlist.attributes['FRAME-RATE'] = attributes.frameRate; + } - if (!currentUri.map && currentMap) { - currentUri.map = currentMap; - } + if (attributes.contentProtection) { + playlist.contentProtection = attributes.contentProtection; + } - if (!currentUri.key && key) { - currentUri.key = key; - } + if (attributes.serviceLocation) { + playlist.attributes.serviceLocation = attributes.serviceLocation; + } - if (!currentUri.timeline && typeof currentTimeline === 'number') { - currentUri.timeline = currentTimeline; - } + if (sidx) { + playlist.sidx = sidx; + } - this.manifest.preloadSegment = currentUri; - }); // update the manifest with the m3u8 entry from the parse stream + return playlist; +}; - this.parseStream.on('data', function (entry) { - let mediaGroup; - let rendition; - ({ - tag() { - // switch based on the tag type - (({ - version() { - if (entry.version) { - this.manifest.version = entry.version; - } - }, +const videoOnly = ({ + attributes +}) => attributes.mimeType === 'video/mp4' || attributes.mimeType === 'video/webm' || attributes.contentType === 'video'; - 'allow-cache'() { - this.manifest.allowCache = entry.allowed; +const audioOnly = ({ + attributes +}) => attributes.mimeType === 'audio/mp4' || attributes.mimeType === 'audio/webm' || attributes.contentType === 'audio'; - if (!('allowed' in entry)) { - this.trigger('info', { - message: 'defaulting allowCache to YES' - }); - this.manifest.allowCache = true; - } - }, +const vttOnly = ({ + attributes +}) => attributes.mimeType === 'text/vtt' || attributes.contentType === 'text'; +/** + * Contains start and timeline properties denoting a timeline start. For DASH, these will + * be the same number. + * + * @typedef {Object} TimelineStart + * @property {number} start - the start time of the timeline + * @property {number} timeline - the timeline number + */ - byterange() { - const byterange = {}; +/** + * Adds appropriate media and discontinuity sequence values to the segments and playlists. + * + * Throughout mpd-parser, the `number` attribute is used in relation to `startNumber`, a + * DASH specific attribute used in constructing segment URI's from templates. However, from + * an HLS perspective, the `number` attribute on a segment would be its `mediaSequence` + * value, which should start at the original media sequence value (or 0) and increment by 1 + * for each segment thereafter. Since DASH's `startNumber` values are independent per + * period, it doesn't make sense to use it for `number`. Instead, assume everything starts + * from a 0 mediaSequence value and increment from there. + * + * Note that VHS currently doesn't use the `number` property, but it can be helpful for + * debugging and making sense of the manifest. + * + * For live playlists, to account for values increasing in manifests when periods are + * removed on refreshes, merging logic should be used to update the numbers to their + * appropriate values (to ensure they're sequential and increasing). + * + * @param {Object[]} playlists - the playlists to update + * @param {TimelineStart[]} timelineStarts - the timeline starts for the manifest + */ - if ('length' in entry) { - currentUri.byterange = byterange; - byterange.length = entry.length; - if (!('offset' in entry)) { - /* - * From the latest spec (as of this writing): - * https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.2.2 - * - * Same text since EXT-X-BYTERANGE's introduction in draft 7: - * https://tools.ietf.org/html/draft-pantos-http-live-streaming-07#section-3.3.1) - * - * "If o [offset] is not present, the sub-range begins at the next byte - * following the sub-range of the previous media segment." - */ - entry.offset = lastByterangeEnd; - } - } +const addMediaSequenceValues = (playlists, timelineStarts) => { + // increment all segments sequentially + playlists.forEach(playlist => { + playlist.mediaSequence = 0; + playlist.discontinuitySequence = timelineStarts.findIndex(function ({ + timeline + }) { + return timeline === playlist.timeline; + }); - if ('offset' in entry) { - currentUri.byterange = byterange; - byterange.offset = entry.offset; - } + if (!playlist.segments) { + return; + } - lastByterangeEnd = byterange.offset + byterange.length; - }, + playlist.segments.forEach((segment, index) => { + segment.number = index; + }); + }); +}; +/** + * Given a media group object, flattens all playlists within the media group into a single + * array. + * + * @param {Object} mediaGroupObject - the media group object + * + * @return {Object[]} + * The media group playlists + */ - endlist() { - this.manifest.endList = true; - }, +const flattenMediaGroupPlaylists = mediaGroupObject => { + if (!mediaGroupObject) { + return []; + } - inf() { - if (!('mediaSequence' in this.manifest)) { - this.manifest.mediaSequence = 0; - this.trigger('info', { - message: 'defaulting media sequence to zero' - }); - } + return Object.keys(mediaGroupObject).reduce((acc, label) => { + const labelContents = mediaGroupObject[label]; + return acc.concat(labelContents.playlists); + }, []); +}; +const toM3u8 = ({ + dashPlaylists, + locations, + contentSteering, + sidxMapping = {}, + previousManifest, + eventStream +}) => { + if (!dashPlaylists.length) { + return {}; + } // grab all main manifest attributes - if (!('discontinuitySequence' in this.manifest)) { - this.manifest.discontinuitySequence = 0; - this.trigger('info', { - message: 'defaulting discontinuity sequence to zero' - }); - } - if (entry.duration > 0) { - currentUri.duration = entry.duration; - } + const { + sourceDuration: duration, + type, + suggestedPresentationDelay, + minimumUpdatePeriod + } = dashPlaylists[0].attributes; + const videoPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(videoOnly)).map(formatVideoPlaylist); + const audioPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(audioOnly)); + const vttPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(vttOnly)); + const captions = dashPlaylists.map(playlist => playlist.attributes.captionServices).filter(Boolean); + const manifest = { + allowCache: true, + discontinuityStarts: [], + segments: [], + endList: true, + mediaGroups: { + AUDIO: {}, + VIDEO: {}, + ['CLOSED-CAPTIONS']: {}, + SUBTITLES: {} + }, + uri: '', + duration, + playlists: addSidxSegmentsToPlaylists(videoPlaylists, sidxMapping) + }; - if (entry.duration === 0) { - currentUri.duration = 0.01; - this.trigger('info', { - message: 'updating zero segment duration to a small value' - }); - } + if (minimumUpdatePeriod >= 0) { + manifest.minimumUpdatePeriod = minimumUpdatePeriod * 1000; + } - this.manifest.segments = uris; - }, + if (locations) { + manifest.locations = locations; + } - key() { - if (!entry.attributes) { - this.trigger('warn', { - message: 'ignoring key declaration without attribute list' - }); - return; - } // clear the active encryption key + if (contentSteering) { + manifest.contentSteering = contentSteering; + } + if (type === 'dynamic') { + manifest.suggestedPresentationDelay = suggestedPresentationDelay; + } - if (entry.attributes.METHOD === 'NONE') { - key = null; - return; - } + if (eventStream && eventStream.length > 0) { + manifest.eventStream = eventStream; + } - if (!entry.attributes.URI) { - this.trigger('warn', { - message: 'ignoring key declaration without URI' - }); - return; - } + const isAudioOnly = manifest.playlists.length === 0; + const organizedAudioGroup = audioPlaylists.length ? organizeAudioPlaylists(audioPlaylists, sidxMapping, isAudioOnly) : null; + const organizedVttGroup = vttPlaylists.length ? organizeVttPlaylists(vttPlaylists, sidxMapping) : null; + const formattedPlaylists = videoPlaylists.concat(flattenMediaGroupPlaylists(organizedAudioGroup), flattenMediaGroupPlaylists(organizedVttGroup)); + const playlistTimelineStarts = formattedPlaylists.map(({ + timelineStarts + }) => timelineStarts); + manifest.timelineStarts = getUniqueTimelineStarts(playlistTimelineStarts); + addMediaSequenceValues(formattedPlaylists, manifest.timelineStarts); - if (entry.attributes.KEYFORMAT === 'com.apple.streamingkeydelivery') { - this.manifest.contentProtection = this.manifest.contentProtection || {}; // TODO: add full support for this. + if (organizedAudioGroup) { + manifest.mediaGroups.AUDIO.audio = organizedAudioGroup; + } - this.manifest.contentProtection['com.apple.fps.1_0'] = { - attributes: entry.attributes - }; - return; - } + if (organizedVttGroup) { + manifest.mediaGroups.SUBTITLES.subs = organizedVttGroup; + } - if (entry.attributes.KEYFORMAT === 'com.microsoft.playready') { - this.manifest.contentProtection = this.manifest.contentProtection || {}; // TODO: add full support for this. + if (captions.length) { + manifest.mediaGroups['CLOSED-CAPTIONS'].cc = organizeCaptionServices(captions); + } - this.manifest.contentProtection['com.microsoft.playready'] = { - uri: entry.attributes.URI - }; - return; - } // check if the content is encrypted for Widevine - // Widevine/HLS spec: https://storage.googleapis.com/wvdocs/Widevine_DRM_HLS.pdf + if (previousManifest) { + return positionManifestOnTimeline({ + oldManifest: previousManifest, + newManifest: manifest + }); + } + return manifest; +}; - if (entry.attributes.KEYFORMAT === widevineUuid) { - const VALID_METHODS = ['SAMPLE-AES', 'SAMPLE-AES-CTR', 'SAMPLE-AES-CENC']; +/** + * Calculates the R (repetition) value for a live stream (for the final segment + * in a manifest where the r value is negative 1) + * + * @param {Object} attributes + * Object containing all inherited attributes from parent elements with attribute + * names as keys + * @param {number} time + * current time (typically the total time up until the final segment) + * @param {number} duration + * duration property for the given + * + * @return {number} + * R value to reach the end of the given period + */ +const getLiveRValue = (attributes, time, duration) => { + const { + NOW, + clientOffset, + availabilityStartTime, + timescale = 1, + periodStart = 0, + minimumUpdatePeriod = 0 + } = attributes; + const now = (NOW + clientOffset) / 1000; + const periodStartWC = availabilityStartTime + periodStart; + const periodEndWC = now + minimumUpdatePeriod; + const periodDuration = periodEndWC - periodStartWC; + return Math.ceil((periodDuration * timescale - time) / duration); +}; +/** + * Uses information provided by SegmentTemplate.SegmentTimeline to determine segment + * timing and duration + * + * @param {Object} attributes + * Object containing all inherited attributes from parent elements with attribute + * names as keys + * @param {Object[]} segmentTimeline + * List of objects representing the attributes of each S element contained within + * + * @return {{number: number, duration: number, time: number, timeline: number}[]} + * List of Objects with segment timing and duration info + */ - if (VALID_METHODS.indexOf(entry.attributes.METHOD) === -1) { - this.trigger('warn', { - message: 'invalid key method provided for Widevine' - }); - return; - } - if (entry.attributes.METHOD === 'SAMPLE-AES-CENC') { - this.trigger('warn', { - message: 'SAMPLE-AES-CENC is deprecated, please use SAMPLE-AES-CTR instead' - }); - } +const parseByTimeline = (attributes, segmentTimeline) => { + const { + type, + minimumUpdatePeriod = 0, + media = '', + sourceDuration, + timescale = 1, + startNumber = 1, + periodStart: timeline + } = attributes; + const segments = []; + let time = -1; - if (entry.attributes.URI.substring(0, 23) !== 'data:text/plain;base64,') { - this.trigger('warn', { - message: 'invalid key URI provided for Widevine' - }); - return; - } + for (let sIndex = 0; sIndex < segmentTimeline.length; sIndex++) { + const S = segmentTimeline[sIndex]; + const duration = S.d; + const repeat = S.r || 0; + const segmentTime = S.t || 0; - if (!(entry.attributes.KEYID && entry.attributes.KEYID.substring(0, 2) === '0x')) { - this.trigger('warn', { - message: 'invalid key ID provided for Widevine' - }); - return; - } // if Widevine key attributes are valid, store them as `contentProtection` - // on the manifest to emulate Widevine tag structure in a DASH mpd + if (time < 0) { + // first segment + time = segmentTime; + } + if (segmentTime && segmentTime > time) { + // discontinuity + // TODO: How to handle this type of discontinuity + // timeline++ here would treat it like HLS discontuity and content would + // get appended without gap + // E.G. + // + // + // + // + // would have $Time$ values of [0, 1, 2, 5] + // should this be appened at time positions [0, 1, 2, 3],(#EXT-X-DISCONTINUITY) + // or [0, 1, 2, gap, gap, 5]? (#EXT-X-GAP) + // does the value of sourceDuration consider this when calculating arbitrary + // negative @r repeat value? + // E.G. Same elements as above with this added at the end + // + // with a sourceDuration of 10 + // Would the 2 gaps be included in the time duration calculations resulting in + // 8 segments with $Time$ values of [0, 1, 2, 5, 6, 7, 8, 9] or 10 segments + // with $Time$ values of [0, 1, 2, 5, 6, 7, 8, 9, 10, 11] ? + time = segmentTime; + } - this.manifest.contentProtection = this.manifest.contentProtection || {}; - this.manifest.contentProtection['com.widevine.alpha'] = { - attributes: { - schemeIdUri: entry.attributes.KEYFORMAT, - // remove '0x' from the key id string - keyId: entry.attributes.KEYID.substring(2) - }, - // decode the base64-encoded PSSH box - pssh: (0,_videojs_vhs_utils_es_decode_b64_to_uint8_array_js__WEBPACK_IMPORTED_MODULE_2__["default"])(entry.attributes.URI.split(',')[1]) - }; - return; - } + let count; - if (!entry.attributes.METHOD) { - this.trigger('warn', { - message: 'defaulting key method to AES-128' - }); - } // setup an encryption key for upcoming segments + if (repeat < 0) { + const nextS = sIndex + 1; + if (nextS === segmentTimeline.length) { + // last segment + if (type === 'dynamic' && minimumUpdatePeriod > 0 && media.indexOf('$Number$') > 0) { + count = getLiveRValue(attributes, time, duration); + } else { + // TODO: This may be incorrect depending on conclusion of TODO above + count = (sourceDuration * timescale - time) / duration; + } + } else { + count = (segmentTimeline[nextS].t - time) / duration; + } + } else { + count = repeat + 1; + } - key = { - method: entry.attributes.METHOD || 'AES-128', - uri: entry.attributes.URI - }; + const end = startNumber + segments.length + count; + let number = startNumber + segments.length; - if (typeof entry.attributes.IV !== 'undefined') { - key.iv = entry.attributes.IV; - } - }, + while (number < end) { + segments.push({ + number, + duration: duration / timescale, + time, + timeline + }); + time += duration; + number++; + } + } - 'media-sequence'() { - if (!isFinite(entry.number)) { - this.trigger('warn', { - message: 'ignoring invalid media sequence: ' + entry.number - }); - return; - } + return segments; +}; - this.manifest.mediaSequence = entry.number; - }, +const identifierPattern = /\$([A-z]*)(?:(%0)([0-9]+)d)?\$/g; +/** + * Replaces template identifiers with corresponding values. To be used as the callback + * for String.prototype.replace + * + * @name replaceCallback + * @function + * @param {string} match + * Entire match of identifier + * @param {string} identifier + * Name of matched identifier + * @param {string} format + * Format tag string. Its presence indicates that padding is expected + * @param {string} width + * Desired length of the replaced value. Values less than this width shall be left + * zero padded + * @return {string} + * Replacement for the matched identifier + */ - 'discontinuity-sequence'() { - if (!isFinite(entry.number)) { - this.trigger('warn', { - message: 'ignoring invalid discontinuity sequence: ' + entry.number - }); - return; - } +/** + * Returns a function to be used as a callback for String.prototype.replace to replace + * template identifiers + * + * @param {Obect} values + * Object containing values that shall be used to replace known identifiers + * @param {number} values.RepresentationID + * Value of the Representation@id attribute + * @param {number} values.Number + * Number of the corresponding segment + * @param {number} values.Bandwidth + * Value of the Representation@bandwidth attribute. + * @param {number} values.Time + * Timestamp value of the corresponding segment + * @return {replaceCallback} + * Callback to be used with String.prototype.replace to replace identifiers + */ - this.manifest.discontinuitySequence = entry.number; - currentTimeline = entry.number; - }, +const identifierReplacement = values => (match, identifier, format, width) => { + if (match === '$$') { + // escape sequence + return '$'; + } - 'playlist-type'() { - if (!/VOD|EVENT/.test(entry.playlistType)) { - this.trigger('warn', { - message: 'ignoring unknown playlist type: ' + entry.playlist - }); - return; - } + if (typeof values[identifier] === 'undefined') { + return match; + } - this.manifest.playlistType = entry.playlistType; - }, + const value = '' + values[identifier]; - map() { - currentMap = {}; + if (identifier === 'RepresentationID') { + // Format tag shall not be present with RepresentationID + return value; + } - if (entry.uri) { - currentMap.uri = entry.uri; - } + if (!format) { + width = 1; + } else { + width = parseInt(width, 10); + } - if (entry.byterange) { - currentMap.byterange = entry.byterange; - } + if (value.length >= width) { + return value; + } - if (key) { - currentMap.key = key; - } - }, + return `${new Array(width - value.length + 1).join('0')}${value}`; +}; +/** + * Constructs a segment url from a template string + * + * @param {string} url + * Template string to construct url from + * @param {Obect} values + * Object containing values that shall be used to replace known identifiers + * @param {number} values.RepresentationID + * Value of the Representation@id attribute + * @param {number} values.Number + * Number of the corresponding segment + * @param {number} values.Bandwidth + * Value of the Representation@bandwidth attribute. + * @param {number} values.Time + * Timestamp value of the corresponding segment + * @return {string} + * Segment url with identifiers replaced + */ - 'stream-inf'() { - this.manifest.playlists = uris; - this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups; +const constructTemplateUrl = (url, values) => url.replace(identifierPattern, identifierReplacement(values)); +/** + * Generates a list of objects containing timing and duration information about each + * segment needed to generate segment uris and the complete segment object + * + * @param {Object} attributes + * Object containing all inherited attributes from parent elements with attribute + * names as keys + * @param {Object[]|undefined} segmentTimeline + * List of objects representing the attributes of each S element contained within + * the SegmentTimeline element + * @return {{number: number, duration: number, time: number, timeline: number}[]} + * List of Objects with segment timing and duration info + */ - if (!entry.attributes) { - this.trigger('warn', { - message: 'ignoring empty stream-inf attributes' - }); - return; - } +const parseTemplateInfo = (attributes, segmentTimeline) => { + if (!attributes.duration && !segmentTimeline) { + // if neither @duration or SegmentTimeline are present, then there shall be exactly + // one media segment + return [{ + number: attributes.startNumber || 1, + duration: attributes.sourceDuration, + time: 0, + timeline: attributes.periodStart + }]; + } - if (!currentUri.attributes) { - currentUri.attributes = {}; - } + if (attributes.duration) { + return parseByDuration(attributes); + } - (0,_babel_runtime_helpers_extends__WEBPACK_IMPORTED_MODULE_1__["default"])(currentUri.attributes, entry.attributes); - }, + return parseByTimeline(attributes, segmentTimeline); +}; +/** + * Generates a list of segments using information provided by the SegmentTemplate element + * + * @param {Object} attributes + * Object containing all inherited attributes from parent elements with attribute + * names as keys + * @param {Object[]|undefined} segmentTimeline + * List of objects representing the attributes of each S element contained within + * the SegmentTimeline element + * @return {Object[]} + * List of segment objects + */ - media() { - this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups; +const segmentsFromTemplate = (attributes, segmentTimeline) => { + const templateValues = { + RepresentationID: attributes.id, + Bandwidth: attributes.bandwidth || 0 + }; + const { + initialization = { + sourceURL: '', + range: '' + } + } = attributes; + const mapSegment = urlTypeToSegment({ + baseUrl: attributes.baseUrl, + source: constructTemplateUrl(initialization.sourceURL, templateValues), + range: initialization.range + }); + const segments = parseTemplateInfo(attributes, segmentTimeline); + return segments.map(segment => { + templateValues.Number = segment.number; + templateValues.Time = segment.time; + const uri = constructTemplateUrl(attributes.media || '', templateValues); // See DASH spec section 5.3.9.2.2 + // - if timescale isn't present on any level, default to 1. - if (!(entry.attributes && entry.attributes.TYPE && entry.attributes['GROUP-ID'] && entry.attributes.NAME)) { - this.trigger('warn', { - message: 'ignoring incomplete or missing media group' - }); - return; - } // find the media group, creating defaults as necessary + const timescale = attributes.timescale || 1; // - if presentationTimeOffset isn't present on any level, default to 0 + const presentationTimeOffset = attributes.presentationTimeOffset || 0; + const presentationTime = // Even if the @t attribute is not specified for the segment, segment.time is + // calculated in mpd-parser prior to this, so it's assumed to be available. + attributes.periodStart + (segment.time - presentationTimeOffset) / timescale; + const map = { + uri, + timeline: segment.timeline, + duration: segment.duration, + resolvedUri: (0,_videojs_vhs_utils_es_resolve_url__WEBPACK_IMPORTED_MODULE_0__["default"])(attributes.baseUrl || '', uri), + map: mapSegment, + number: segment.number, + presentationTime + }; + return map; + }); +}; - const mediaGroupType = this.manifest.mediaGroups[entry.attributes.TYPE]; - mediaGroupType[entry.attributes['GROUP-ID']] = mediaGroupType[entry.attributes['GROUP-ID']] || {}; - mediaGroup = mediaGroupType[entry.attributes['GROUP-ID']]; // collect the rendition metadata +/** + * Converts a (of type URLType from the DASH spec 5.3.9.2 Table 14) + * to an object that matches the output of a segment in videojs/mpd-parser + * + * @param {Object} attributes + * Object containing all inherited attributes from parent elements with attribute + * names as keys + * @param {Object} segmentUrl + * node to translate into a segment object + * @return {Object} translated segment object + */ - rendition = { - default: /yes/i.test(entry.attributes.DEFAULT) - }; +const SegmentURLToSegmentObject = (attributes, segmentUrl) => { + const { + baseUrl, + initialization = {} + } = attributes; + const initSegment = urlTypeToSegment({ + baseUrl, + source: initialization.sourceURL, + range: initialization.range + }); + const segment = urlTypeToSegment({ + baseUrl, + source: segmentUrl.media, + range: segmentUrl.mediaRange + }); + segment.map = initSegment; + return segment; +}; +/** + * Generates a list of segments using information provided by the SegmentList element + * SegmentList (DASH SPEC Section 5.3.9.3.2) contains a set of nodes. Each + * node should be translated into segment. + * + * @param {Object} attributes + * Object containing all inherited attributes from parent elements with attribute + * names as keys + * @param {Object[]|undefined} segmentTimeline + * List of objects representing the attributes of each S element contained within + * the SegmentTimeline element + * @return {Object.} list of segments + */ - if (rendition.default) { - rendition.autoselect = true; - } else { - rendition.autoselect = /yes/i.test(entry.attributes.AUTOSELECT); - } - if (entry.attributes.LANGUAGE) { - rendition.language = entry.attributes.LANGUAGE; - } +const segmentsFromList = (attributes, segmentTimeline) => { + const { + duration, + segmentUrls = [], + periodStart + } = attributes; // Per spec (5.3.9.2.1) no way to determine segment duration OR + // if both SegmentTimeline and @duration are defined, it is outside of spec. - if (entry.attributes.URI) { - rendition.uri = entry.attributes.URI; - } + if (!duration && !segmentTimeline || duration && segmentTimeline) { + throw new Error(errors.SEGMENT_TIME_UNSPECIFIED); + } - if (entry.attributes['INSTREAM-ID']) { - rendition.instreamId = entry.attributes['INSTREAM-ID']; - } + const segmentUrlMap = segmentUrls.map(segmentUrlObject => SegmentURLToSegmentObject(attributes, segmentUrlObject)); + let segmentTimeInfo; - if (entry.attributes.CHARACTERISTICS) { - rendition.characteristics = entry.attributes.CHARACTERISTICS; - } + if (duration) { + segmentTimeInfo = parseByDuration(attributes); + } - if (entry.attributes.FORCED) { - rendition.forced = /yes/i.test(entry.attributes.FORCED); - } // insert the new rendition + if (segmentTimeline) { + segmentTimeInfo = parseByTimeline(attributes, segmentTimeline); + } + const segments = segmentTimeInfo.map((segmentTime, index) => { + if (segmentUrlMap[index]) { + const segment = segmentUrlMap[index]; // See DASH spec section 5.3.9.2.2 + // - if timescale isn't present on any level, default to 1. - mediaGroup[entry.attributes.NAME] = rendition; - }, + const timescale = attributes.timescale || 1; // - if presentationTimeOffset isn't present on any level, default to 0 - discontinuity() { - currentTimeline += 1; - currentUri.discontinuity = true; - this.manifest.discontinuityStarts.push(uris.length); - }, + const presentationTimeOffset = attributes.presentationTimeOffset || 0; + segment.timeline = segmentTime.timeline; + segment.duration = segmentTime.duration; + segment.number = segmentTime.number; + segment.presentationTime = periodStart + (segmentTime.time - presentationTimeOffset) / timescale; + return segment; + } // Since we're mapping we should get rid of any blank segments (in case + // the given SegmentTimeline is handling for more elements than we have + // SegmentURLs for). - 'program-date-time'() { - if (typeof this.manifest.dateTimeString === 'undefined') { - // PROGRAM-DATE-TIME is a media-segment tag, but for backwards - // compatibility, we add the first occurence of the PROGRAM-DATE-TIME tag - // to the manifest object - // TODO: Consider removing this in future major version - this.manifest.dateTimeString = entry.dateTimeString; - this.manifest.dateTimeObject = entry.dateTimeObject; - } + }).filter(segment => segment); + return segments; +}; - currentUri.dateTimeString = entry.dateTimeString; - currentUri.dateTimeObject = entry.dateTimeObject; - }, +const generateSegments = ({ + attributes, + segmentInfo +}) => { + let segmentAttributes; + let segmentsFn; - targetduration() { - if (!isFinite(entry.duration) || entry.duration < 0) { - this.trigger('warn', { - message: 'ignoring invalid target duration: ' + entry.duration - }); - return; - } + if (segmentInfo.template) { + segmentsFn = segmentsFromTemplate; + segmentAttributes = merge(attributes, segmentInfo.template); + } else if (segmentInfo.base) { + segmentsFn = segmentsFromBase; + segmentAttributes = merge(attributes, segmentInfo.base); + } else if (segmentInfo.list) { + segmentsFn = segmentsFromList; + segmentAttributes = merge(attributes, segmentInfo.list); + } - this.manifest.targetDuration = entry.duration; - setHoldBack.call(this, this.manifest); - }, + const segmentsInfo = { + attributes + }; - start() { - if (!entry.attributes || isNaN(entry.attributes['TIME-OFFSET'])) { - this.trigger('warn', { - message: 'ignoring start declaration without appropriate attribute list' - }); - return; - } + if (!segmentsFn) { + return segmentsInfo; + } - this.manifest.start = { - timeOffset: entry.attributes['TIME-OFFSET'], - precise: entry.attributes.PRECISE - }; - }, + const segments = segmentsFn(segmentAttributes, segmentInfo.segmentTimeline); // The @duration attribute will be used to determin the playlist's targetDuration which + // must be in seconds. Since we've generated the segment list, we no longer need + // @duration to be in @timescale units, so we can convert it here. - 'cue-out'() { - currentUri.cueOut = entry.data; - }, + if (segmentAttributes.duration) { + const { + duration, + timescale = 1 + } = segmentAttributes; + segmentAttributes.duration = duration / timescale; + } else if (segments.length) { + // if there is no @duration attribute, use the largest segment duration as + // as target duration + segmentAttributes.duration = segments.reduce((max, segment) => { + return Math.max(max, Math.ceil(segment.duration)); + }, 0); + } else { + segmentAttributes.duration = 0; + } - 'cue-out-cont'() { - currentUri.cueOutCont = entry.data; - }, + segmentsInfo.attributes = segmentAttributes; + segmentsInfo.segments = segments; // This is a sidx box without actual segment information - 'cue-in'() { - currentUri.cueIn = entry.data; - }, + if (segmentInfo.base && segmentAttributes.indexRange) { + segmentsInfo.sidx = segments[0]; + segmentsInfo.segments = []; + } - 'skip'() { - this.manifest.skip = camelCaseKeys(entry.attributes); - this.warnOnMissingAttributes_('#EXT-X-SKIP', entry.attributes, ['SKIPPED-SEGMENTS']); - }, - - 'part'() { - hasParts = true; // parts are always specifed before a segment - - const segmentIndex = this.manifest.segments.length; - const part = camelCaseKeys(entry.attributes); - currentUri.parts = currentUri.parts || []; - currentUri.parts.push(part); - - if (part.byterange) { - if (!part.byterange.hasOwnProperty('offset')) { - part.byterange.offset = lastPartByterangeEnd; - } - - lastPartByterangeEnd = part.byterange.offset + part.byterange.length; - } - - const partIndex = currentUri.parts.length - 1; - this.warnOnMissingAttributes_(`#EXT-X-PART #${partIndex} for segment #${segmentIndex}`, entry.attributes, ['URI', 'DURATION']); - - if (this.manifest.renditionReports) { - this.manifest.renditionReports.forEach((r, i) => { - if (!r.hasOwnProperty('lastPart')) { - this.trigger('warn', { - message: `#EXT-X-RENDITION-REPORT #${i} lacks required attribute(s): LAST-PART` - }); - } - }); - } - }, - - 'server-control'() { - const attrs = this.manifest.serverControl = camelCaseKeys(entry.attributes); - - if (!attrs.hasOwnProperty('canBlockReload')) { - attrs.canBlockReload = false; - this.trigger('info', { - message: '#EXT-X-SERVER-CONTROL defaulting CAN-BLOCK-RELOAD to false' - }); - } - - setHoldBack.call(this, this.manifest); - - if (attrs.canSkipDateranges && !attrs.hasOwnProperty('canSkipUntil')) { - this.trigger('warn', { - message: '#EXT-X-SERVER-CONTROL lacks required attribute CAN-SKIP-UNTIL which is required when CAN-SKIP-DATERANGES is set' - }); - } - }, - - 'preload-hint'() { - // parts are always specifed before a segment - const segmentIndex = this.manifest.segments.length; - const hint = camelCaseKeys(entry.attributes); - const isPart = hint.type && hint.type === 'PART'; - currentUri.preloadHints = currentUri.preloadHints || []; - currentUri.preloadHints.push(hint); - - if (hint.byterange) { - if (!hint.byterange.hasOwnProperty('offset')) { - // use last part byterange end or zero if not a part. - hint.byterange.offset = isPart ? lastPartByterangeEnd : 0; - - if (isPart) { - lastPartByterangeEnd = hint.byterange.offset + hint.byterange.length; - } - } - } - - const index = currentUri.preloadHints.length - 1; - this.warnOnMissingAttributes_(`#EXT-X-PRELOAD-HINT #${index} for segment #${segmentIndex}`, entry.attributes, ['TYPE', 'URI']); - - if (!hint.type) { - return; - } // search through all preload hints except for the current one for - // a duplicate type. - - - for (let i = 0; i < currentUri.preloadHints.length - 1; i++) { - const otherHint = currentUri.preloadHints[i]; - - if (!otherHint.type) { - continue; - } - - if (otherHint.type === hint.type) { - this.trigger('warn', { - message: `#EXT-X-PRELOAD-HINT #${index} for segment #${segmentIndex} has the same TYPE ${hint.type} as preload hint #${i}` - }); - } - } - }, - - 'rendition-report'() { - const report = camelCaseKeys(entry.attributes); - this.manifest.renditionReports = this.manifest.renditionReports || []; - this.manifest.renditionReports.push(report); - const index = this.manifest.renditionReports.length - 1; - const required = ['LAST-MSN', 'URI']; - - if (hasParts) { - required.push('LAST-PART'); - } - - this.warnOnMissingAttributes_(`#EXT-X-RENDITION-REPORT #${index}`, entry.attributes, required); - }, - - 'part-inf'() { - this.manifest.partInf = camelCaseKeys(entry.attributes); - this.warnOnMissingAttributes_('#EXT-X-PART-INF', entry.attributes, ['PART-TARGET']); - - if (this.manifest.partInf.partTarget) { - this.manifest.partTargetDuration = this.manifest.partInf.partTarget; - } - - setHoldBack.call(this, this.manifest); - }, - - 'daterange'() { - this.manifest.daterange = this.manifest.daterange || []; - this.manifest.daterange.push(camelCaseKeys(entry.attributes)); - const index = this.manifest.daterange.length - 1; - this.warnOnMissingAttributes_(`#EXT-X-DATERANGE #${index}`, entry.attributes, ['ID', 'START-DATE']); - const daterange = this.manifest.daterange[index]; - - if (daterange.endDate && daterange.startDate && new Date(daterange.endDate) < new Date(daterange.startDate)) { - this.trigger('warn', { - message: 'EXT-X-DATERANGE END-DATE must be equal to or later than the value of the START-DATE' - }); - } - - if (daterange.duration && daterange.duration < 0) { - this.trigger('warn', { - message: 'EXT-X-DATERANGE DURATION must not be negative' - }); - } - - if (daterange.plannedDuration && daterange.plannedDuration < 0) { - this.trigger('warn', { - message: 'EXT-X-DATERANGE PLANNED-DURATION must not be negative' - }); - } - - const endOnNextYes = !!daterange.endOnNext; - - if (endOnNextYes && !daterange.class) { - this.trigger('warn', { - message: 'EXT-X-DATERANGE with an END-ON-NEXT=YES attribute must have a CLASS attribute' - }); - } - - if (endOnNextYes && (daterange.duration || daterange.endDate)) { - this.trigger('warn', { - message: 'EXT-X-DATERANGE with an END-ON-NEXT=YES attribute must not contain DURATION or END-DATE attributes' - }); - } - - if (daterange.duration && daterange.endDate) { - const startDate = daterange.startDate; - const newDateInSeconds = startDate.setSeconds(startDate.getSeconds() + daterange.duration); - this.manifest.daterange[index].endDate = new Date(newDateInSeconds); - } - - if (daterange && !this.manifest.dateTimeString) { - this.trigger('warn', { - message: 'A playlist with EXT-X-DATERANGE tag must contain atleast one EXT-X-PROGRAM-DATE-TIME tag' - }); - } - - if (!daterangeTags[daterange.id]) { - daterangeTags[daterange.id] = daterange; - } else { - for (const attribute in daterangeTags[daterange.id]) { - if (daterangeTags[daterange.id][attribute] !== daterange[attribute]) { - this.trigger('warn', { - message: 'EXT-X-DATERANGE tags with the same ID in a playlist must have the same attributes and same attribute values' - }); - break; - } - } - } - }, - - 'independent-segments'() { - this.manifest.independentSegments = true; - } - - })[entry.tagType] || noop).call(self); - }, - - uri() { - currentUri.uri = entry.uri; - uris.push(currentUri); // if no explicit duration was declared, use the target duration - - if (this.manifest.targetDuration && !('duration' in currentUri)) { - this.trigger('warn', { - message: 'defaulting segment duration to the target duration' - }); - currentUri.duration = this.manifest.targetDuration; - } // annotate with encryption information, if necessary - - - if (key) { - currentUri.key = key; - } - - currentUri.timeline = currentTimeline; // annotate with initialization segment information, if necessary + return segmentsInfo; +}; +const toPlaylists = representations => representations.map(generateSegments); - if (currentMap) { - currentUri.map = currentMap; - } // reset the last byterange end as it needs to be 0 between parts +const findChildren = (element, name) => from(element.childNodes).filter(({ + tagName +}) => tagName === name); +const getContent = element => element.textContent.trim(); +/** + * Converts the provided string that may contain a division operation to a number. + * + * @param {string} value - the provided string value + * + * @return {number} the parsed string value + */ +const parseDivisionValue = value => { + return parseFloat(value.split('/').reduce((prev, current) => prev / current)); +}; - lastPartByterangeEnd = 0; // prepare for the next URI +const parseDuration = str => { + const SECONDS_IN_YEAR = 365 * 24 * 60 * 60; + const SECONDS_IN_MONTH = 30 * 24 * 60 * 60; + const SECONDS_IN_DAY = 24 * 60 * 60; + const SECONDS_IN_HOUR = 60 * 60; + const SECONDS_IN_MIN = 60; // P10Y10M10DT10H10M10.1S - currentUri = {}; - }, + const durationRegex = /P(?:(\d*)Y)?(?:(\d*)M)?(?:(\d*)D)?(?:T(?:(\d*)H)?(?:(\d*)M)?(?:([\d.]*)S)?)?/; + const match = durationRegex.exec(str); - comment() {// comments are not important for playback - }, + if (!match) { + return 0; + } - custom() { - // if this is segment-level data attach the output to the segment - if (entry.segment) { - currentUri.custom = currentUri.custom || {}; - currentUri.custom[entry.customType] = entry.data; // if this is manifest-level data attach to the top level manifest object - } else { - this.manifest.custom = this.manifest.custom || {}; - this.manifest.custom[entry.customType] = entry.data; - } - } + const [year, month, day, hour, minute, second] = match.slice(1); + return parseFloat(year || 0) * SECONDS_IN_YEAR + parseFloat(month || 0) * SECONDS_IN_MONTH + parseFloat(day || 0) * SECONDS_IN_DAY + parseFloat(hour || 0) * SECONDS_IN_HOUR + parseFloat(minute || 0) * SECONDS_IN_MIN + parseFloat(second || 0); +}; +const parseDate = str => { + // Date format without timezone according to ISO 8601 + // YYY-MM-DDThh:mm:ss.ssssss + const dateRegex = /^\d+-\d+-\d+T\d+:\d+:\d+(\.\d+)?$/; // If the date string does not specifiy a timezone, we must specifiy UTC. This is + // expressed by ending with 'Z' - })[entry.type].call(self); - }); + if (dateRegex.test(str)) { + str += 'Z'; } - warnOnMissingAttributes_(identifier, attributes, required) { - const missing = []; - required.forEach(function (key) { - if (!attributes.hasOwnProperty(key)) { - missing.push(key); - } - }); + return Date.parse(str); +}; - if (missing.length) { - this.trigger('warn', { - message: `${identifier} lacks required attribute(s): ${missing.join(', ')}` - }); - } - } +const parsers = { /** - * Parse the input string and update the manifest object. + * Specifies the duration of the entire Media Presentation. Format is a duration string + * as specified in ISO 8601 * - * @param {string} chunk a potentially incomplete portion of the manifest + * @param {string} value + * value of attribute as a string + * @return {number} + * The duration in seconds */ + mediaPresentationDuration(value) { + return parseDuration(value); + }, - - push(chunk) { - this.lineStream.push(chunk); - } /** - * Flush any remaining input. This can be handy if the last line of an M3U8 - * manifest did not contain a trailing newline but the file has been - * completely received. + * Specifies the Segment availability start time for all Segments referred to in this + * MPD. For a dynamic manifest, it specifies the anchor for the earliest availability + * time. Format is a date string as specified in ISO 8601 + * + * @param {string} value + * value of attribute as a string + * @return {number} + * The date as seconds from unix epoch */ + availabilityStartTime(value) { + return parseDate(value) / 1000; + }, - - end() { - // flush any buffered input - this.lineStream.push('\n'); - this.trigger('end'); - } /** - * Add an additional parser for non-standard tags + * Specifies the smallest period between potential changes to the MPD. Format is a + * duration string as specified in ISO 8601 * - * @param {Object} options a map of options for the added parser - * @param {RegExp} options.expression a regular expression to match the custom header - * @param {string} options.type the type to register to the output - * @param {Function} [options.dataParser] function to parse the line into an object - * @param {boolean} [options.segment] should tag data be attached to the segment object + * @param {string} value + * value of attribute as a string + * @return {number} + * The duration in seconds */ + minimumUpdatePeriod(value) { + return parseDuration(value); + }, - - addParser(options) { - this.parseStream.addParser(options); - } /** - * Add a custom header mapper + * Specifies the suggested presentation delay. Format is a + * duration string as specified in ISO 8601 * - * @param {Object} options - * @param {RegExp} options.expression a regular expression to match the custom header - * @param {Function} options.map function to translate tag into a different tag + * @param {string} value + * value of attribute as a string + * @return {number} + * The duration in seconds */ + suggestedPresentationDelay(value) { + return parseDuration(value); + }, - - addTagMapper(options) { - this.parseStream.addTagMapper(options); - } - -} - - - - -/***/ }), - -/***/ "./node_modules/m3u8-parser/node_modules/@videojs/vhs-utils/es/decode-b64-to-uint8-array.js": -/*!**************************************************************************************************!*\ - !*** ./node_modules/m3u8-parser/node_modules/@videojs/vhs-utils/es/decode-b64-to-uint8-array.js ***! - \**************************************************************************************************/ -/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { - -"use strict"; -__webpack_require__.r(__webpack_exports__); -/* harmony export */ __webpack_require__.d(__webpack_exports__, { -/* harmony export */ "default": () => (/* binding */ decodeB64ToUint8Array) -/* harmony export */ }); -/* harmony import */ var global_window__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! global/window */ "./node_modules/global/window.js"); -/* harmony import */ var global_window__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(global_window__WEBPACK_IMPORTED_MODULE_0__); - - -var atob = function atob(s) { - return (global_window__WEBPACK_IMPORTED_MODULE_0___default().atob) ? global_window__WEBPACK_IMPORTED_MODULE_0___default().atob(s) : Buffer.from(s, 'base64').toString('binary'); -}; - -function decodeB64ToUint8Array(b64Text) { - var decodedString = atob(b64Text); - var array = new Uint8Array(decodedString.length); - - for (var i = 0; i < decodedString.length; i++) { - array[i] = decodedString.charCodeAt(i); - } - - return array; -} - -/***/ }), - -/***/ "./node_modules/m3u8-parser/node_modules/@videojs/vhs-utils/es/stream.js": -/*!*******************************************************************************!*\ - !*** ./node_modules/m3u8-parser/node_modules/@videojs/vhs-utils/es/stream.js ***! - \*******************************************************************************/ -/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { - -"use strict"; -__webpack_require__.r(__webpack_exports__); -/* harmony export */ __webpack_require__.d(__webpack_exports__, { -/* harmony export */ "default": () => (/* binding */ Stream) -/* harmony export */ }); -/** - * @file stream.js - */ - -/** - * A lightweight readable stream implemention that handles event dispatching. - * - * @class Stream - */ -var Stream = /*#__PURE__*/function () { - function Stream() { - this.listeners = {}; - } /** - * Add a listener for a specified event type. + * specifices the type of mpd. Can be either "static" or "dynamic" * - * @param {string} type the event name - * @param {Function} listener the callback to be invoked when an event of - * the specified type occurs + * @param {string} value + * value of attribute as a string + * + * @return {string} + * The type as a string */ + type(value) { + return value; + }, + /** + * Specifies the duration of the smallest time shifting buffer for any Representation + * in the MPD. Format is a duration string as specified in ISO 8601 + * + * @param {string} value + * value of attribute as a string + * @return {number} + * The duration in seconds + */ + timeShiftBufferDepth(value) { + return parseDuration(value); + }, - var _proto = Stream.prototype; - - _proto.on = function on(type, listener) { - if (!this.listeners[type]) { - this.listeners[type] = []; - } - - this.listeners[type].push(listener); - } /** - * Remove a listener for a specified event type. + * Specifies the PeriodStart time of the Period relative to the availabilityStarttime. + * Format is a duration string as specified in ISO 8601 * - * @param {string} type the event name - * @param {Function} listener a function previously registered for this - * type of event through `on` - * @return {boolean} if we could turn it off or not + * @param {string} value + * value of attribute as a string + * @return {number} + * The duration in seconds */ - ; + start(value) { + return parseDuration(value); + }, - _proto.off = function off(type, listener) { - if (!this.listeners[type]) { - return false; - } + /** + * Specifies the width of the visual presentation + * + * @param {string} value + * value of attribute as a string + * @return {number} + * The parsed width + */ + width(value) { + return parseInt(value, 10); + }, - var index = this.listeners[type].indexOf(listener); // TODO: which is better? - // In Video.js we slice listener functions - // on trigger so that it does not mess up the order - // while we loop through. - // - // Here we slice on off so that the loop in trigger - // can continue using it's old reference to loop without - // messing up the order. + /** + * Specifies the height of the visual presentation + * + * @param {string} value + * value of attribute as a string + * @return {number} + * The parsed height + */ + height(value) { + return parseInt(value, 10); + }, - this.listeners[type] = this.listeners[type].slice(0); - this.listeners[type].splice(index, 1); - return index > -1; - } /** - * Trigger an event of the specified type on this stream. Any additional - * arguments to this function are passed as parameters to event listeners. + * Specifies the bitrate of the representation * - * @param {string} type the event name + * @param {string} value + * value of attribute as a string + * @return {number} + * The parsed bandwidth */ - ; + bandwidth(value) { + return parseInt(value, 10); + }, - _proto.trigger = function trigger(type) { - var callbacks = this.listeners[type]; - - if (!callbacks) { - return; - } // Slicing the arguments on every invocation of this method - // can add a significant amount of overhead. Avoid the - // intermediate object creation for the common case of a - // single callback argument - - - if (arguments.length === 2) { - var length = callbacks.length; - - for (var i = 0; i < length; ++i) { - callbacks[i].call(this, arguments[1]); - } - } else { - var args = Array.prototype.slice.call(arguments, 1); - var _length = callbacks.length; - - for (var _i = 0; _i < _length; ++_i) { - callbacks[_i].apply(this, args); - } - } - } /** - * Destroys the stream and cleans up. + * Specifies the frame rate of the representation + * + * @param {string} value + * value of attribute as a string + * @return {number} + * The parsed frame rate */ - ; + frameRate(value) { + return parseDivisionValue(value); + }, - _proto.dispose = function dispose() { - this.listeners = {}; - } /** - * Forwards all `data` events on this stream to the destination stream. The - * destination stream should provide a method `push` to receive the data - * events as they arrive. + * Specifies the number of the first Media Segment in this Representation in the Period * - * @param {Stream} destination the stream that will receive all `data` events - * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options + * @param {string} value + * value of attribute as a string + * @return {number} + * The parsed number */ - ; - - _proto.pipe = function pipe(destination) { - this.on('data', function (data) { - destination.push(data); - }); - }; - - return Stream; -}(); - + startNumber(value) { + return parseInt(value, 10); + }, + /** + * Specifies the timescale in units per seconds + * + * @param {string} value + * value of attribute as a string + * @return {number} + * The parsed timescale + */ + timescale(value) { + return parseInt(value, 10); + }, -/***/ }), + /** + * Specifies the presentationTimeOffset. + * + * @param {string} value + * value of the attribute as a string + * + * @return {number} + * The parsed presentationTimeOffset + */ + presentationTimeOffset(value) { + return parseInt(value, 10); + }, -/***/ "./node_modules/mpd-parser/dist/mpd-parser.es.js": -/*!*******************************************************!*\ - !*** ./node_modules/mpd-parser/dist/mpd-parser.es.js ***! - \*******************************************************/ -/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { + /** + * Specifies the constant approximate Segment duration + * NOTE: The element also contains an @duration attribute. This duration + * specifies the duration of the Period. This attribute is currently not + * supported by the rest of the parser, however we still check for it to prevent + * errors. + * + * @param {string} value + * value of attribute as a string + * @return {number} + * The parsed duration + */ + duration(value) { + const parsedValue = parseInt(value, 10); -"use strict"; -__webpack_require__.r(__webpack_exports__); -/* harmony export */ __webpack_require__.d(__webpack_exports__, { -/* harmony export */ VERSION: () => (/* binding */ VERSION), -/* harmony export */ addSidxSegmentsToPlaylist: () => (/* binding */ addSidxSegmentsToPlaylist$1), -/* harmony export */ generateSidxKey: () => (/* binding */ generateSidxKey), -/* harmony export */ inheritAttributes: () => (/* binding */ inheritAttributes), -/* harmony export */ parse: () => (/* binding */ parse), -/* harmony export */ parseUTCTiming: () => (/* binding */ parseUTCTiming), -/* harmony export */ stringToMpdXml: () => (/* binding */ stringToMpdXml), -/* harmony export */ toM3u8: () => (/* binding */ toM3u8), -/* harmony export */ toPlaylists: () => (/* binding */ toPlaylists) -/* harmony export */ }); -/* harmony import */ var _videojs_vhs_utils_es_resolve_url__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! @videojs/vhs-utils/es/resolve-url */ "./node_modules/mpd-parser/node_modules/@videojs/vhs-utils/es/resolve-url.js"); -/* harmony import */ var global_window__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! global/window */ "./node_modules/global/window.js"); -/* harmony import */ var global_window__WEBPACK_IMPORTED_MODULE_1___default = /*#__PURE__*/__webpack_require__.n(global_window__WEBPACK_IMPORTED_MODULE_1__); -/* harmony import */ var _videojs_vhs_utils_es_media_groups__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! @videojs/vhs-utils/es/media-groups */ "./node_modules/mpd-parser/node_modules/@videojs/vhs-utils/es/media-groups.js"); -/* harmony import */ var _videojs_vhs_utils_es_decode_b64_to_uint8_array__WEBPACK_IMPORTED_MODULE_3__ = __webpack_require__(/*! @videojs/vhs-utils/es/decode-b64-to-uint8-array */ "./node_modules/mpd-parser/node_modules/@videojs/vhs-utils/es/decode-b64-to-uint8-array.js"); -/* harmony import */ var _xmldom_xmldom__WEBPACK_IMPORTED_MODULE_4__ = __webpack_require__(/*! @xmldom/xmldom */ "./node_modules/mpd-parser/node_modules/@xmldom/xmldom/lib/index.js"); -/*! @name mpd-parser @version 1.2.2 @license Apache-2.0 */ + if (isNaN(parsedValue)) { + return parseDuration(value); + } + return parsedValue; + }, + /** + * Specifies the Segment duration, in units of the value of the @timescale. + * + * @param {string} value + * value of attribute as a string + * @return {number} + * The parsed duration + */ + d(value) { + return parseInt(value, 10); + }, + /** + * Specifies the MPD start time, in @timescale units, the first Segment in the series + * starts relative to the beginning of the Period + * + * @param {string} value + * value of attribute as a string + * @return {number} + * The parsed time + */ + t(value) { + return parseInt(value, 10); + }, + /** + * Specifies the repeat count of the number of following contiguous Segments with the + * same duration expressed by the value of @d + * + * @param {string} value + * value of attribute as a string + * @return {number} + * The parsed number + */ + r(value) { + return parseInt(value, 10); + }, + /** + * Specifies the presentationTime. + * + * @param {string} value + * value of the attribute as a string + * + * @return {number} + * The parsed presentationTime + */ + presentationTime(value) { + return parseInt(value, 10); + }, -var version = "1.2.2"; + /** + * Default parser for all other attributes. Acts as a no-op and just returns the value + * as a string + * + * @param {string} value + * value of attribute as a string + * @return {string} + * Unparsed value + */ + DEFAULT(value) { + return value; + } -const isObject = obj => { - return !!obj && typeof obj === 'object'; }; +/** + * Gets all the attributes and values of the provided node, parses attributes with known + * types, and returns an object with attribute names mapped to values. + * + * @param {Node} el + * The node to parse attributes from + * @return {Object} + * Object with all attributes of el parsed + */ -const merge = (...objects) => { - return objects.reduce((result, source) => { - if (typeof source !== 'object') { - return result; - } +const parseAttributes = el => { + if (!(el && el.attributes)) { + return {}; + } - Object.keys(source).forEach(key => { - if (Array.isArray(result[key]) && Array.isArray(source[key])) { - result[key] = result[key].concat(source[key]); - } else if (isObject(result[key]) && isObject(source[key])) { - result[key] = merge(result[key], source[key]); - } else { - result[key] = source[key]; - } - }); - return result; + return from(el.attributes).reduce((a, e) => { + const parseFn = parsers[e.name] || parsers.DEFAULT; + a[e.name] = parseFn(e.value); + return a; }, {}); }; -const values = o => Object.keys(o).map(k => o[k]); - -const range = (start, end) => { - const result = []; - - for (let i = start; i < end; i++) { - result.push(i); - } - return result; +const keySystemsMap = { + 'urn:uuid:1077efec-c0b2-4d02-ace3-3c1e52e2fb4b': 'org.w3.clearkey', + 'urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed': 'com.widevine.alpha', + 'urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95': 'com.microsoft.playready', + 'urn:uuid:f239e769-efa3-4850-9c16-a903c6932efb': 'com.adobe.primetime' }; -const flatten = lists => lists.reduce((x, y) => x.concat(y), []); -const from = list => { - if (!list.length) { - return []; +/** + * Builds a list of urls that is the product of the reference urls and BaseURL values + * + * @param {Object[]} references + * List of objects containing the reference URL as well as its attributes + * @param {Node[]} baseUrlElements + * List of BaseURL nodes from the mpd + * @return {Object[]} + * List of objects with resolved urls and attributes + */ + +const buildBaseUrls = (references, baseUrlElements) => { + if (!baseUrlElements.length) { + return references; } - const result = []; + return flatten(references.map(function (reference) { + return baseUrlElements.map(function (baseUrlElement) { + const initialBaseUrl = getContent(baseUrlElement); + const resolvedBaseUrl = (0,_videojs_vhs_utils_es_resolve_url__WEBPACK_IMPORTED_MODULE_0__["default"])(reference.baseUrl, initialBaseUrl); + const finalBaseUrl = merge(parseAttributes(baseUrlElement), { + baseUrl: resolvedBaseUrl + }); // If the URL is resolved, we want to get the serviceLocation from the reference + // assuming there is no serviceLocation on the initialBaseUrl - for (let i = 0; i < list.length; i++) { - result.push(list[i]); - } + if (resolvedBaseUrl !== initialBaseUrl && !finalBaseUrl.serviceLocation && reference.serviceLocation) { + finalBaseUrl.serviceLocation = reference.serviceLocation; + } - return result; + return finalBaseUrl; + }); + })); }; -const findIndexes = (l, key) => l.reduce((a, e, i) => { - if (e[key]) { - a.push(i); - } - - return a; -}, []); /** - * Returns a union of the included lists provided each element can be identified by a key. + * Contains all Segment information for its containing AdaptationSet * - * @param {Array} list - list of lists to get the union of - * @param {Function} keyFunction - the function to use as a key for each element + * @typedef {Object} SegmentInformation + * @property {Object|undefined} template + * Contains the attributes for the SegmentTemplate node + * @property {Object[]|undefined} segmentTimeline + * Contains a list of atrributes for each S node within the SegmentTimeline node + * @property {Object|undefined} list + * Contains the attributes for the SegmentList node + * @property {Object|undefined} base + * Contains the attributes for the SegmentBase node + */ + +/** + * Returns all available Segment information contained within the AdaptationSet node * - * @return {Array} the union of the arrays + * @param {Node} adaptationSet + * The AdaptationSet node to get Segment information from + * @return {SegmentInformation} + * The Segment information contained within the provided AdaptationSet */ -const union = (lists, keyFunction) => { - return values(lists.reduce((acc, list) => { - list.forEach(el => { - acc[keyFunction(el)] = el; - }); - return acc; - }, {})); -}; +const getSegmentInformation = adaptationSet => { + const segmentTemplate = findChildren(adaptationSet, 'SegmentTemplate')[0]; + const segmentList = findChildren(adaptationSet, 'SegmentList')[0]; + const segmentUrls = segmentList && findChildren(segmentList, 'SegmentURL').map(s => merge({ + tag: 'SegmentURL' + }, parseAttributes(s))); + const segmentBase = findChildren(adaptationSet, 'SegmentBase')[0]; + const segmentTimelineParentNode = segmentList || segmentTemplate; + const segmentTimeline = segmentTimelineParentNode && findChildren(segmentTimelineParentNode, 'SegmentTimeline')[0]; + const segmentInitializationParentNode = segmentList || segmentBase || segmentTemplate; + const segmentInitialization = segmentInitializationParentNode && findChildren(segmentInitializationParentNode, 'Initialization')[0]; // SegmentTemplate is handled slightly differently, since it can have both + // @initialization and an node. @initialization can be templated, + // while the node can have a url and range specified. If the has + // both @initialization and an subelement we opt to override with + // the node, as this interaction is not defined in the spec. -var errors = { - INVALID_NUMBER_OF_PERIOD: 'INVALID_NUMBER_OF_PERIOD', - INVALID_NUMBER_OF_CONTENT_STEERING: 'INVALID_NUMBER_OF_CONTENT_STEERING', - DASH_EMPTY_MANIFEST: 'DASH_EMPTY_MANIFEST', - DASH_INVALID_XML: 'DASH_INVALID_XML', - NO_BASE_URL: 'NO_BASE_URL', - MISSING_SEGMENT_INFORMATION: 'MISSING_SEGMENT_INFORMATION', - SEGMENT_TIME_UNSPECIFIED: 'SEGMENT_TIME_UNSPECIFIED', - UNSUPPORTED_UTC_TIMING_SCHEME: 'UNSUPPORTED_UTC_TIMING_SCHEME' -}; + const template = segmentTemplate && parseAttributes(segmentTemplate); + + if (template && segmentInitialization) { + template.initialization = segmentInitialization && parseAttributes(segmentInitialization); + } else if (template && template.initialization) { + // If it is @initialization we convert it to an object since this is the format that + // later functions will rely on for the initialization segment. This is only valid + // for + template.initialization = { + sourceURL: template.initialization + }; + } + const segmentInfo = { + template, + segmentTimeline: segmentTimeline && findChildren(segmentTimeline, 'S').map(s => parseAttributes(s)), + list: segmentList && merge(parseAttributes(segmentList), { + segmentUrls, + initialization: parseAttributes(segmentInitialization) + }), + base: segmentBase && merge(parseAttributes(segmentBase), { + initialization: parseAttributes(segmentInitialization) + }) + }; + Object.keys(segmentInfo).forEach(key => { + if (!segmentInfo[key]) { + delete segmentInfo[key]; + } + }); + return segmentInfo; +}; /** - * @typedef {Object} SingleUri - * @property {string} uri - relative location of segment - * @property {string} resolvedUri - resolved location of segment - * @property {Object} byterange - Object containing information on how to make byte range - * requests following byte-range-spec per RFC2616. - * @property {String} byterange.length - length of range request - * @property {String} byterange.offset - byte offset of range request + * Contains Segment information and attributes needed to construct a Playlist object + * from a Representation * - * @see https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35.1 + * @typedef {Object} RepresentationInformation + * @property {SegmentInformation} segmentInfo + * Segment information for this Representation + * @property {Object} attributes + * Inherited attributes for this Representation */ /** - * Converts a URLType node (5.3.9.2.3 Table 13) to a segment object - * that conforms to how m3u8-parser is structured - * - * @see https://github.com/videojs/m3u8-parser + * Maps a Representation node to an object containing Segment information and attributes * - * @param {string} baseUrl - baseUrl provided by nodes - * @param {string} source - source url for segment - * @param {string} range - optional range used for range calls, - * follows RFC 2616, Clause 14.35.1 - * @return {SingleUri} full segment information transformed into a format similar - * to m3u8-parser + * @name inheritBaseUrlsCallback + * @function + * @param {Node} representation + * Representation node from the mpd + * @return {RepresentationInformation} + * Representation information needed to construct a Playlist object */ -const urlTypeToSegment = ({ - baseUrl = '', - source = '', - range = '', - indexRange = '' -}) => { - const segment = { - uri: source, - resolvedUri: (0,_videojs_vhs_utils_es_resolve_url__WEBPACK_IMPORTED_MODULE_0__["default"])(baseUrl || '', source) - }; +/** + * Returns a callback for Array.prototype.map for mapping Representation nodes to + * Segment information and attributes using inherited BaseURL nodes. + * + * @param {Object} adaptationSetAttributes + * Contains attributes inherited by the AdaptationSet + * @param {Object[]} adaptationSetBaseUrls + * List of objects containing resolved base URLs and attributes + * inherited by the AdaptationSet + * @param {SegmentInformation} adaptationSetSegmentInfo + * Contains Segment information for the AdaptationSet + * @return {inheritBaseUrlsCallback} + * Callback map function + */ - if (range || indexRange) { - const rangeStr = range ? range : indexRange; - const ranges = rangeStr.split('-'); // default to parsing this as a BigInt if possible +const inheritBaseUrls = (adaptationSetAttributes, adaptationSetBaseUrls, adaptationSetSegmentInfo) => representation => { + const repBaseUrlElements = findChildren(representation, 'BaseURL'); + const repBaseUrls = buildBaseUrls(adaptationSetBaseUrls, repBaseUrlElements); + const attributes = merge(adaptationSetAttributes, parseAttributes(representation)); + const representationSegmentInfo = getSegmentInformation(representation); + return repBaseUrls.map(baseUrl => { + return { + segmentInfo: merge(adaptationSetSegmentInfo, representationSegmentInfo), + attributes: merge(attributes, baseUrl) + }; + }); +}; +/** + * Tranforms a series of content protection nodes to + * an object containing pssh data by key system + * + * @param {Node[]} contentProtectionNodes + * Content protection nodes + * @return {Object} + * Object containing pssh data by key system + */ - let startRange = (global_window__WEBPACK_IMPORTED_MODULE_1___default().BigInt) ? global_window__WEBPACK_IMPORTED_MODULE_1___default().BigInt(ranges[0]) : parseInt(ranges[0], 10); - let endRange = (global_window__WEBPACK_IMPORTED_MODULE_1___default().BigInt) ? global_window__WEBPACK_IMPORTED_MODULE_1___default().BigInt(ranges[1]) : parseInt(ranges[1], 10); // convert back to a number if less than MAX_SAFE_INTEGER +const generateKeySystemInformation = contentProtectionNodes => { + return contentProtectionNodes.reduce((acc, node) => { + const attributes = parseAttributes(node); // Although it could be argued that according to the UUID RFC spec the UUID string (a-f chars) should be generated + // as a lowercase string it also mentions it should be treated as case-insensitive on input. Since the key system + // UUIDs in the keySystemsMap are hardcoded as lowercase in the codebase there isn't any reason not to do + // .toLowerCase() on the input UUID string from the manifest (at least I could not think of one). - if (startRange < Number.MAX_SAFE_INTEGER && typeof startRange === 'bigint') { - startRange = Number(startRange); + if (attributes.schemeIdUri) { + attributes.schemeIdUri = attributes.schemeIdUri.toLowerCase(); } - if (endRange < Number.MAX_SAFE_INTEGER && typeof endRange === 'bigint') { - endRange = Number(endRange); - } + const keySystem = keySystemsMap[attributes.schemeIdUri]; - let length; + if (keySystem) { + acc[keySystem] = { + attributes + }; + const psshNode = findChildren(node, 'cenc:pssh')[0]; - if (typeof endRange === 'bigint' || typeof startRange === 'bigint') { - length = global_window__WEBPACK_IMPORTED_MODULE_1___default().BigInt(endRange) - global_window__WEBPACK_IMPORTED_MODULE_1___default().BigInt(startRange) + global_window__WEBPACK_IMPORTED_MODULE_1___default().BigInt(1); - } else { - length = endRange - startRange + 1; + if (psshNode) { + const pssh = getContent(psshNode); + acc[keySystem].pssh = pssh && (0,_videojs_vhs_utils_es_decode_b64_to_uint8_array__WEBPACK_IMPORTED_MODULE_3__["default"])(pssh); + } } - if (typeof length === 'bigint' && length < Number.MAX_SAFE_INTEGER) { - length = Number(length); - } // byterange should be inclusive according to - // RFC 2616, Clause 14.35.1 + return acc; + }, {}); +}; // defined in ANSI_SCTE 214-1 2016 - segment.byterange = { - length, - offset: startRange - }; - } +const parseCaptionServiceMetadata = service => { + // 608 captions + if (service.schemeIdUri === 'urn:scte:dash:cc:cea-608:2015') { + const values = typeof service.value !== 'string' ? [] : service.value.split(';'); + return values.map(value => { + let channel; + let language; // default language to value - return segment; -}; -const byteRangeToString = byterange => { - // `endRange` is one less than `offset + length` because the HTTP range - // header uses inclusive ranges - let endRange; + language = value; - if (typeof byterange.offset === 'bigint' || typeof byterange.length === 'bigint') { - endRange = global_window__WEBPACK_IMPORTED_MODULE_1___default().BigInt(byterange.offset) + global_window__WEBPACK_IMPORTED_MODULE_1___default().BigInt(byterange.length) - global_window__WEBPACK_IMPORTED_MODULE_1___default().BigInt(1); - } else { - endRange = byterange.offset + byterange.length - 1; - } + if (/^CC\d=/.test(value)) { + [channel, language] = value.split('='); + } else if (/^CC\d$/.test(value)) { + channel = value; + } - return `${byterange.offset}-${endRange}`; -}; + return { + channel, + language + }; + }); + } else if (service.schemeIdUri === 'urn:scte:dash:cc:cea-708:2015') { + const values = typeof service.value !== 'string' ? [] : service.value.split(';'); + return values.map(value => { + const flags = { + // service or channel number 1-63 + 'channel': undefined, + // language is a 3ALPHA per ISO 639.2/B + // field is required + 'language': undefined, + // BIT 1/0 or ? + // default value is 1, meaning 16:9 aspect ratio, 0 is 4:3, ? is unknown + 'aspectRatio': 1, + // BIT 1/0 + // easy reader flag indicated the text is tailed to the needs of beginning readers + // default 0, or off + 'easyReader': 0, + // BIT 1/0 + // If 3d metadata is present (CEA-708.1) then 1 + // default 0 + '3D': 0 + }; -/** - * parse the end number attribue that can be a string - * number, or undefined. - * - * @param {string|number|undefined} endNumber - * The end number attribute. - * - * @return {number|null} - * The result of parsing the end number. - */ + if (/=/.test(value)) { + const [channel, opts = ''] = value.split('='); + flags.channel = channel; + flags.language = value; + opts.split(',').forEach(opt => { + const [name, val] = opt.split(':'); -const parseEndNumber = endNumber => { - if (endNumber && typeof endNumber !== 'number') { - endNumber = parseInt(endNumber, 10); - } + if (name === 'lang') { + flags.language = val; // er for easyReadery + } else if (name === 'er') { + flags.easyReader = Number(val); // war for wide aspect ratio + } else if (name === 'war') { + flags.aspectRatio = Number(val); + } else if (name === '3D') { + flags['3D'] = Number(val); + } + }); + } else { + flags.language = value; + } - if (isNaN(endNumber)) { - return null; - } + if (flags.channel) { + flags.channel = 'SERVICE' + flags.channel; + } - return endNumber; + return flags; + }); + } }; /** - * Functions for calculating the range of available segments in static and dynamic - * manifests. + * A map callback that will parse all event stream data for a collection of periods + * DASH ISO_IEC_23009 5.10.2.2 + * https://dashif-documents.azurewebsites.net/Events/master/event.html#mpd-event-timing + * + * @param {PeriodInformation} period object containing necessary period information + * @return a collection of parsed eventstream event objects */ +const toEventStream = period => { + // get and flatten all EventStreams tags and parse attributes and children + return flatten(findChildren(period.node, 'EventStream').map(eventStream => { + const eventStreamAttributes = parseAttributes(eventStream); + const schemeIdUri = eventStreamAttributes.schemeIdUri; // find all Events per EventStream tag and map to return objects -const segmentRange = { - /** - * Returns the entire range of available segments for a static MPD - * - * @param {Object} attributes - * Inheritied MPD attributes - * @return {{ start: number, end: number }} - * The start and end numbers for available segments - */ - static(attributes) { - const { - duration, - timescale = 1, - sourceDuration, - periodDuration - } = attributes; - const endNumber = parseEndNumber(attributes.endNumber); - const segmentDuration = duration / timescale; - - if (typeof endNumber === 'number') { + return findChildren(eventStream, 'Event').map(event => { + const eventAttributes = parseAttributes(event); + const presentationTime = eventAttributes.presentationTime || 0; + const timescale = eventStreamAttributes.timescale || 1; + const duration = eventAttributes.duration || 0; + const start = presentationTime / timescale + period.attributes.start; return { - start: 0, - end: endNumber + schemeIdUri, + value: eventStreamAttributes.value, + id: eventAttributes.id, + start, + end: start + duration / timescale, + messageData: getContent(event) || eventAttributes.messageData, + contentEncoding: eventStreamAttributes.contentEncoding, + presentationTimeOffset: eventStreamAttributes.presentationTimeOffset || 0 }; - } + }); + })); +}; +/** + * Maps an AdaptationSet node to a list of Representation information objects + * + * @name toRepresentationsCallback + * @function + * @param {Node} adaptationSet + * AdaptationSet node from the mpd + * @return {RepresentationInformation[]} + * List of objects containing Representaion information + */ - if (typeof periodDuration === 'number') { - return { - start: 0, - end: periodDuration / segmentDuration - }; - } +/** + * Returns a callback for Array.prototype.map for mapping AdaptationSet nodes to a list of + * Representation information objects + * + * @param {Object} periodAttributes + * Contains attributes inherited by the Period + * @param {Object[]} periodBaseUrls + * Contains list of objects with resolved base urls and attributes + * inherited by the Period + * @param {string[]} periodSegmentInfo + * Contains Segment Information at the period level + * @return {toRepresentationsCallback} + * Callback map function + */ - return { - start: 0, - end: sourceDuration / segmentDuration - }; - }, +const toRepresentations = (periodAttributes, periodBaseUrls, periodSegmentInfo) => adaptationSet => { + const adaptationSetAttributes = parseAttributes(adaptationSet); + const adaptationSetBaseUrls = buildBaseUrls(periodBaseUrls, findChildren(adaptationSet, 'BaseURL')); + const role = findChildren(adaptationSet, 'Role')[0]; + const roleAttributes = { + role: parseAttributes(role) + }; + let attrs = merge(periodAttributes, adaptationSetAttributes, roleAttributes); + const accessibility = findChildren(adaptationSet, 'Accessibility')[0]; + const captionServices = parseCaptionServiceMetadata(parseAttributes(accessibility)); - /** - * Returns the current live window range of available segments for a dynamic MPD - * - * @param {Object} attributes - * Inheritied MPD attributes - * @return {{ start: number, end: number }} - * The start and end numbers for available segments - */ - dynamic(attributes) { - const { - NOW, - clientOffset, - availabilityStartTime, - timescale = 1, - duration, - periodStart = 0, - minimumUpdatePeriod = 0, - timeShiftBufferDepth = Infinity - } = attributes; - const endNumber = parseEndNumber(attributes.endNumber); // clientOffset is passed in at the top level of mpd-parser and is an offset calculated - // after retrieving UTC server time. + if (captionServices) { + attrs = merge(attrs, { + captionServices + }); + } - const now = (NOW + clientOffset) / 1000; // WC stands for Wall Clock. - // Convert the period start time to EPOCH. + const label = findChildren(adaptationSet, 'Label')[0]; - const periodStartWC = availabilityStartTime + periodStart; // Period end in EPOCH is manifest's retrieval time + time until next update. + if (label && label.childNodes.length) { + const labelVal = label.childNodes[0].nodeValue.trim(); + attrs = merge(attrs, { + label: labelVal + }); + } - const periodEndWC = now + minimumUpdatePeriod; - const periodDuration = periodEndWC - periodStartWC; - const segmentCount = Math.ceil(periodDuration * timescale / duration); - const availableStart = Math.floor((now - periodStartWC - timeShiftBufferDepth) * timescale / duration); - const availableEnd = Math.floor((now - periodStartWC) * timescale / duration); - return { - start: Math.max(0, availableStart), - end: typeof endNumber === 'number' ? endNumber : Math.min(segmentCount, availableEnd) - }; + const contentProtection = generateKeySystemInformation(findChildren(adaptationSet, 'ContentProtection')); + + if (Object.keys(contentProtection).length) { + attrs = merge(attrs, { + contentProtection + }); } + const segmentInfo = getSegmentInformation(adaptationSet); + const representations = findChildren(adaptationSet, 'Representation'); + const adaptationSetSegmentInfo = merge(periodSegmentInfo, segmentInfo); + return flatten(representations.map(inheritBaseUrls(attrs, adaptationSetBaseUrls, adaptationSetSegmentInfo))); }; /** - * Maps a range of numbers to objects with information needed to build the corresponding - * segment list + * Contains all period information for mapping nodes onto adaptation sets. * - * @name toSegmentsCallback + * @typedef {Object} PeriodInformation + * @property {Node} period.node + * Period node from the mpd + * @property {Object} period.attributes + * Parsed period attributes from node plus any added + */ + +/** + * Maps a PeriodInformation object to a list of Representation information objects for all + * AdaptationSet nodes contained within the Period. + * + * @name toAdaptationSetsCallback * @function - * @param {number} number - * Number of the segment - * @param {number} index - * Index of the number in the range list - * @return {{ number: Number, duration: Number, timeline: Number, time: Number }} - * Object with segment timing and duration info + * @param {PeriodInformation} period + * Period object containing necessary period information + * @param {number} periodStart + * Start time of the Period within the mpd + * @return {RepresentationInformation[]} + * List of objects containing Representaion information */ /** - * Returns a callback for Array.prototype.map for mapping a range of numbers to - * information needed to build the segment list. + * Returns a callback for Array.prototype.map for mapping Period nodes to a list of + * Representation information objects * - * @param {Object} attributes - * Inherited MPD attributes - * @return {toSegmentsCallback} + * @param {Object} mpdAttributes + * Contains attributes inherited by the mpd + * @param {Object[]} mpdBaseUrls + * Contains list of objects with resolved base urls and attributes + * inherited by the mpd + * @return {toAdaptationSetsCallback} * Callback map function */ -const toSegments = attributes => number => { - const { - duration, - timescale = 1, - periodStart, - startNumber = 1 - } = attributes; - return { - number: startNumber + number, - duration: duration / timescale, - timeline: periodStart, - time: number * duration - }; +const toAdaptationSets = (mpdAttributes, mpdBaseUrls) => (period, index) => { + const periodBaseUrls = buildBaseUrls(mpdBaseUrls, findChildren(period.node, 'BaseURL')); + const periodAttributes = merge(mpdAttributes, { + periodStart: period.attributes.start + }); + + if (typeof period.attributes.duration === 'number') { + periodAttributes.periodDuration = period.attributes.duration; + } + + const adaptationSets = findChildren(period.node, 'AdaptationSet'); + const periodSegmentInfo = getSegmentInformation(period.node); + return flatten(adaptationSets.map(toRepresentations(periodAttributes, periodBaseUrls, periodSegmentInfo))); }; /** - * Returns a list of objects containing segment timing and duration info used for - * building the list of segments. This uses the @duration attribute specified - * in the MPD manifest to derive the range of segments. + * Tranforms an array of content steering nodes into an object + * containing CDN content steering information from the MPD manifest. * - * @param {Object} attributes - * Inherited MPD attributes - * @return {{number: number, duration: number, time: number, timeline: number}[]} - * List of Objects with segment timing and duration info + * For more information on the DASH spec for Content Steering parsing, see: + * https://dashif.org/docs/DASH-IF-CTS-00XX-Content-Steering-Community-Review.pdf + * + * @param {Node[]} contentSteeringNodes + * Content steering nodes + * @param {Function} eventHandler + * The event handler passed into the parser options to handle warnings + * @return {Object} + * Object containing content steering data */ -const parseByDuration = attributes => { - const { - type, - duration, - timescale = 1, - periodDuration, - sourceDuration - } = attributes; - const { - start, - end - } = segmentRange[type](attributes); - const segments = range(start, end).map(toSegments(attributes)); - - if (type === 'static') { - const index = segments.length - 1; // section is either a period or the full source +const generateContentSteeringInformation = (contentSteeringNodes, eventHandler) => { + // If there are more than one ContentSteering tags, throw an error + if (contentSteeringNodes.length > 1) { + eventHandler({ + type: 'warn', + message: 'The MPD manifest should contain no more than one ContentSteering tag' + }); + } // Return a null value if there are no ContentSteering tags - const sectionDuration = typeof periodDuration === 'number' ? periodDuration : sourceDuration; // final segment may be less than full segment duration - segments[index].duration = sectionDuration - duration / timescale * index; + if (!contentSteeringNodes.length) { + return null; } - return segments; -}; + const infoFromContentSteeringTag = merge({ + serverURL: getContent(contentSteeringNodes[0]) + }, parseAttributes(contentSteeringNodes[0])); // Converts `queryBeforeStart` to a boolean, as well as setting the default value + // to `false` if it doesn't exist + infoFromContentSteeringTag.queryBeforeStart = infoFromContentSteeringTag.queryBeforeStart === 'true'; + return infoFromContentSteeringTag; +}; /** - * Translates SegmentBase into a set of segments. - * (DASH SPEC Section 5.3.9.3.2) contains a set of nodes. Each - * node should be translated into segment. + * Gets Period@start property for a given period. * - * @param {Object} attributes - * Object containing all inherited attributes from parent elements with attribute - * names as keys - * @return {Object.} list of segments + * @param {Object} options + * Options object + * @param {Object} options.attributes + * Period attributes + * @param {Object} [options.priorPeriodAttributes] + * Prior period attributes (if prior period is available) + * @param {string} options.mpdType + * The MPD@type these periods came from + * @return {number|null} + * The period start, or null if it's an early available period or error */ -const segmentsFromBase = attributes => { - const { - baseUrl, - initialization = {}, - sourceDuration, - indexRange = '', - periodStart, - presentationTime, - number = 0, - duration - } = attributes; // base url is required for SegmentBase to work, per spec (Section 5.3.9.2.1) +const getPeriodStart = ({ + attributes, + priorPeriodAttributes, + mpdType +}) => { + // Summary of period start time calculation from DASH spec section 5.3.2.1 + // + // A period's start is the first period's start + time elapsed after playing all + // prior periods to this one. Periods continue one after the other in time (without + // gaps) until the end of the presentation. + // + // The value of Period@start should be: + // 1. if Period@start is present: value of Period@start + // 2. if previous period exists and it has @duration: previous Period@start + + // previous Period@duration + // 3. if this is first period and MPD@type is 'static': 0 + // 4. in all other cases, consider the period an "early available period" (note: not + // currently supported) + // (1) + if (typeof attributes.start === 'number') { + return attributes.start; + } // (2) - if (!baseUrl) { - throw new Error(errors.NO_BASE_URL); - } - const initSegment = urlTypeToSegment({ - baseUrl, - source: initialization.sourceURL, - range: initialization.range - }); - const segment = urlTypeToSegment({ - baseUrl, - source: baseUrl, - indexRange - }); - segment.map = initSegment; // If there is a duration, use it, otherwise use the given duration of the source - // (since SegmentBase is only for one total segment) + if (priorPeriodAttributes && typeof priorPeriodAttributes.start === 'number' && typeof priorPeriodAttributes.duration === 'number') { + return priorPeriodAttributes.start + priorPeriodAttributes.duration; + } // (3) - if (duration) { - const segmentTimeInfo = parseByDuration(attributes); - if (segmentTimeInfo.length) { - segment.duration = segmentTimeInfo[0].duration; - segment.timeline = segmentTimeInfo[0].timeline; - } - } else if (sourceDuration) { - segment.duration = sourceDuration; - segment.timeline = periodStart; - } // If presentation time is provided, these segments are being generated by SIDX - // references, and should use the time provided. For the general case of SegmentBase, - // there should only be one segment in the period, so its presentation time is the same - // as its period start. + if (!priorPeriodAttributes && mpdType === 'static') { + return 0; + } // (4) + // There is currently no logic for calculating the Period@start value if there is + // no Period@start or prior Period@start and Period@duration available. This is not made + // explicit by the DASH interop guidelines or the DASH spec, however, since there's + // nothing about any other resolution strategies, it's implied. Thus, this case should + // be considered an early available period, or error, and null should suffice for both + // of those cases. - segment.presentationTime = presentationTime || periodStart; - segment.number = number; - return [segment]; + return null; }; /** - * Given a playlist, a sidx box, and a baseUrl, update the segment list of the playlist - * according to the sidx information given. - * - * playlist.sidx has metadadata about the sidx where-as the sidx param - * is the parsed sidx box itself. + * Traverses the mpd xml tree to generate a list of Representation information objects + * that have inherited attributes from parent nodes * - * @param {Object} playlist the playlist to update the sidx information for - * @param {Object} sidx the parsed sidx box - * @return {Object} the playlist object with the updated sidx information + * @param {Node} mpd + * The root node of the mpd + * @param {Object} options + * Available options for inheritAttributes + * @param {string} options.manifestUri + * The uri source of the mpd + * @param {number} options.NOW + * Current time per DASH IOP. Default is current time in ms since epoch + * @param {number} options.clientOffset + * Client time difference from NOW (in milliseconds) + * @return {RepresentationInformation[]} + * List of objects containing Representation information */ -const addSidxSegmentsToPlaylist$1 = (playlist, sidx, baseUrl) => { - // Retain init segment information - const initSegment = playlist.sidx.map ? playlist.sidx.map : null; // Retain source duration from initial main manifest parsing - - const sourceDuration = playlist.sidx.duration; // Retain source timeline - - const timeline = playlist.timeline || 0; - const sidxByteRange = playlist.sidx.byterange; - const sidxEnd = sidxByteRange.offset + sidxByteRange.length; // Retain timescale of the parsed sidx +const inheritAttributes = (mpd, options = {}) => { + const { + manifestUri = '', + NOW = Date.now(), + clientOffset = 0, + // TODO: For now, we are expecting an eventHandler callback function + // to be passed into the mpd parser as an option. + // In the future, we should enable stream parsing by using the Stream class from vhs-utils. + // This will support new features including a standardized event handler. + // See the m3u8 parser for examples of how stream parsing is currently used for HLS parsing. + // https://github.com/videojs/vhs-utils/blob/88d6e10c631e57a5af02c5a62bc7376cd456b4f5/src/stream.js#L9 + eventHandler = function () {} + } = options; + const periodNodes = findChildren(mpd, 'Period'); - const timescale = sidx.timescale; // referenceType 1 refers to other sidx boxes + if (!periodNodes.length) { + throw new Error(errors.INVALID_NUMBER_OF_PERIOD); + } - const mediaReferences = sidx.references.filter(r => r.referenceType !== 1); - const segments = []; - const type = playlist.endList ? 'static' : 'dynamic'; - const periodStart = playlist.sidx.timeline; - let presentationTime = periodStart; - let number = playlist.mediaSequence || 0; // firstOffset is the offset from the end of the sidx box + const locations = findChildren(mpd, 'Location'); + const mpdAttributes = parseAttributes(mpd); + const mpdBaseUrls = buildBaseUrls([{ + baseUrl: manifestUri + }], findChildren(mpd, 'BaseURL')); + const contentSteeringNodes = findChildren(mpd, 'ContentSteering'); // See DASH spec section 5.3.1.2, Semantics of MPD element. Default type to 'static'. - let startIndex; // eslint-disable-next-line + mpdAttributes.type = mpdAttributes.type || 'static'; + mpdAttributes.sourceDuration = mpdAttributes.mediaPresentationDuration || 0; + mpdAttributes.NOW = NOW; + mpdAttributes.clientOffset = clientOffset; - if (typeof sidx.firstOffset === 'bigint') { - startIndex = global_window__WEBPACK_IMPORTED_MODULE_1___default().BigInt(sidxEnd) + sidx.firstOffset; - } else { - startIndex = sidxEnd + sidx.firstOffset; + if (locations.length) { + mpdAttributes.locations = locations.map(getContent); } - for (let i = 0; i < mediaReferences.length; i++) { - const reference = sidx.references[i]; // size of the referenced (sub)segment + const periods = []; // Since toAdaptationSets acts on individual periods right now, the simplest approach to + // adding properties that require looking at prior periods is to parse attributes and add + // missing ones before toAdaptationSets is called. If more such properties are added, it + // may be better to refactor toAdaptationSets. - const size = reference.referencedSize; // duration of the referenced (sub)segment, in the timescale - // this will be converted to seconds when generating segments + periodNodes.forEach((node, index) => { + const attributes = parseAttributes(node); // Use the last modified prior period, as it may contain added information necessary + // for this period. - const duration = reference.subsegmentDuration; // should be an inclusive range + const priorPeriod = periods[index - 1]; + attributes.start = getPeriodStart({ + attributes, + priorPeriodAttributes: priorPeriod ? priorPeriod.attributes : null, + mpdType: mpdAttributes.type + }); + periods.push({ + node, + attributes + }); + }); + return { + locations: mpdAttributes.locations, + contentSteeringInfo: generateContentSteeringInformation(contentSteeringNodes, eventHandler), + // TODO: There are occurences where this `representationInfo` array contains undesired + // duplicates. This generally occurs when there are multiple BaseURL nodes that are + // direct children of the MPD node. When we attempt to resolve URLs from a combination of the + // parent BaseURL and a child BaseURL, and the value does not resolve, + // we end up returning the child BaseURL multiple times. + // We need to determine a way to remove these duplicates in a safe way. + // See: https://github.com/videojs/mpd-parser/pull/17#discussion_r162750527 + representationInfo: flatten(periods.map(toAdaptationSets(mpdAttributes, mpdBaseUrls))), + eventStream: flatten(periods.map(toEventStream)) + }; +}; - let endIndex; // eslint-disable-next-line +const stringToMpdXml = manifestString => { + if (manifestString === '') { + throw new Error(errors.DASH_EMPTY_MANIFEST); + } - if (typeof startIndex === 'bigint') { - endIndex = startIndex + global_window__WEBPACK_IMPORTED_MODULE_1___default().BigInt(size) - global_window__WEBPACK_IMPORTED_MODULE_1___default().BigInt(1); - } else { - endIndex = startIndex + size - 1; - } + const parser = new _xmldom_xmldom__WEBPACK_IMPORTED_MODULE_4__.DOMParser(); + let xml; + let mpd; - const indexRange = `${startIndex}-${endIndex}`; - const attributes = { - baseUrl, - timescale, - timeline, - periodStart, - presentationTime, - number, - duration, - sourceDuration, - indexRange, - type - }; - const segment = segmentsFromBase(attributes)[0]; + try { + xml = parser.parseFromString(manifestString, 'application/xml'); + mpd = xml && xml.documentElement.tagName === 'MPD' ? xml.documentElement : null; + } catch (e) {// ie 11 throws on invalid xml + } - if (initSegment) { - segment.map = initSegment; - } + if (!mpd || mpd && mpd.getElementsByTagName('parsererror').length > 0) { + throw new Error(errors.DASH_INVALID_XML); + } - segments.push(segment); + return mpd; +}; - if (typeof startIndex === 'bigint') { - startIndex += global_window__WEBPACK_IMPORTED_MODULE_1___default().BigInt(size); - } else { - startIndex += size; - } +/** + * Parses the manifest for a UTCTiming node, returning the nodes attributes if found + * + * @param {string} mpd + * XML string of the MPD manifest + * @return {Object|null} + * Attributes of UTCTiming node specified in the manifest. Null if none found + */ - presentationTime += duration / timescale; - number++; +const parseUTCTimingScheme = mpd => { + const UTCTimingNode = findChildren(mpd, 'UTCTiming')[0]; + + if (!UTCTimingNode) { + return null; } - playlist.segments = segments; - return playlist; -}; + const attributes = parseAttributes(UTCTimingNode); -const SUPPORTED_MEDIA_TYPES = ['AUDIO', 'SUBTITLES']; // allow one 60fps frame as leniency (arbitrarily chosen) + switch (attributes.schemeIdUri) { + case 'urn:mpeg:dash:utc:http-head:2014': + case 'urn:mpeg:dash:utc:http-head:2012': + attributes.method = 'HEAD'; + break; -const TIME_FUDGE = 1 / 60; -/** - * Given a list of timelineStarts, combines, dedupes, and sorts them. + case 'urn:mpeg:dash:utc:http-xsdate:2014': + case 'urn:mpeg:dash:utc:http-iso:2014': + case 'urn:mpeg:dash:utc:http-xsdate:2012': + case 'urn:mpeg:dash:utc:http-iso:2012': + attributes.method = 'GET'; + break; + + case 'urn:mpeg:dash:utc:direct:2014': + case 'urn:mpeg:dash:utc:direct:2012': + attributes.method = 'DIRECT'; + attributes.value = Date.parse(attributes.value); + break; + + case 'urn:mpeg:dash:utc:http-ntp:2014': + case 'urn:mpeg:dash:utc:ntp:2014': + case 'urn:mpeg:dash:utc:sntp:2014': + default: + throw new Error(errors.UNSUPPORTED_UTC_TIMING_SCHEME); + } + + return attributes; +}; + +const VERSION = version; +/* + * Given a DASH manifest string and options, parses the DASH manifest into an object in the + * form outputed by m3u8-parser and accepted by videojs/http-streaming. * - * @param {TimelineStart[]} timelineStarts - list of timeline starts + * For live DASH manifests, if `previousManifest` is provided in options, then the newly + * parsed DASH manifest will have its media sequence and discontinuity sequence values + * updated to reflect its position relative to the prior manifest. * - * @return {TimelineStart[]} the combined and deduped timeline starts + * @param {string} manifestString - the DASH manifest as a string + * @param {options} [options] - any options + * + * @return {Object} the manifest object */ -const getUniqueTimelineStarts = timelineStarts => { - return union(timelineStarts, ({ - timeline - }) => timeline).sort((a, b) => a.timeline > b.timeline ? 1 : -1); +const parse = (manifestString, options = {}) => { + const parsedManifestInfo = inheritAttributes(stringToMpdXml(manifestString), options); + const playlists = toPlaylists(parsedManifestInfo.representationInfo); + return toM3u8({ + dashPlaylists: playlists, + locations: parsedManifestInfo.locations, + contentSteering: parsedManifestInfo.contentSteeringInfo, + sidxMapping: options.sidxMapping, + previousManifest: options.previousManifest, + eventStream: parsedManifestInfo.eventStream + }); }; /** - * Finds the playlist with the matching NAME attribute. - * - * @param {Array} playlists - playlists to search through - * @param {string} name - the NAME attribute to search for + * Parses the manifest for a UTCTiming node, returning the nodes attributes if found * - * @return {Object|null} the matching playlist object, or null + * @param {string} manifestString + * XML string of the MPD manifest + * @return {Object|null} + * Attributes of UTCTiming node specified in the manifest. Null if none found */ -const findPlaylistWithName = (playlists, name) => { - for (let i = 0; i < playlists.length; i++) { - if (playlists[i].attributes.NAME === name) { - return playlists[i]; - } - } - return null; -}; +const parseUTCTiming = manifestString => parseUTCTimingScheme(stringToMpdXml(manifestString)); + + + + +/***/ }), + +/***/ "./node_modules/mpd-parser/node_modules/@xmldom/xmldom/lib/conventions.js": +/*!********************************************************************************!*\ + !*** ./node_modules/mpd-parser/node_modules/@xmldom/xmldom/lib/conventions.js ***! + \********************************************************************************/ +/***/ ((__unused_webpack_module, exports) => { + +"use strict"; + + /** - * Gets a flattened array of media group playlists. + * Ponyfill for `Array.prototype.find` which is only available in ES6 runtimes. * - * @param {Object} manifest - the main manifest object + * Works with anything that has a `length` property and index access properties, including NodeList. * - * @return {Array} the media group playlists + * @template {unknown} T + * @param {Array | ({length:number, [number]: T})} list + * @param {function (item: T, index: number, list:Array | ({length:number, [number]: T})):boolean} predicate + * @param {Partial>?} ac `Array.prototype` by default, + * allows injecting a custom implementation in tests + * @returns {T | undefined} + * + * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find + * @see https://tc39.es/ecma262/multipage/indexed-collections.html#sec-array.prototype.find */ +function find(list, predicate, ac) { + if (ac === undefined) { + ac = Array.prototype; + } + if (list && typeof ac.find === 'function') { + return ac.find.call(list, predicate); + } + for (var i = 0; i < list.length; i++) { + if (Object.prototype.hasOwnProperty.call(list, i)) { + var item = list[i]; + if (predicate.call(undefined, item, i, list)) { + return item; + } + } + } +} -const getMediaGroupPlaylists = manifest => { - let mediaGroupPlaylists = []; - (0,_videojs_vhs_utils_es_media_groups__WEBPACK_IMPORTED_MODULE_2__.forEachMediaGroup)(manifest, SUPPORTED_MEDIA_TYPES, (properties, type, group, label) => { - mediaGroupPlaylists = mediaGroupPlaylists.concat(properties.playlists || []); - }); - return mediaGroupPlaylists; -}; /** - * Updates the playlist's media sequence numbers. + * "Shallow freezes" an object to render it immutable. + * Uses `Object.freeze` if available, + * otherwise the immutability is only in the type. * - * @param {Object} config - options object - * @param {Object} config.playlist - the playlist to update - * @param {number} config.mediaSequence - the mediaSequence number to start with + * Is used to create "enum like" objects. + * + * @template T + * @param {T} object the object to freeze + * @param {Pick = Object} oc `Object` by default, + * allows to inject custom object constructor for tests + * @returns {Readonly} + * + * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/freeze */ +function freeze(object, oc) { + if (oc === undefined) { + oc = Object + } + return oc && typeof oc.freeze === 'function' ? oc.freeze(object) : object +} -const updateMediaSequenceForPlaylist = ({ - playlist, - mediaSequence -}) => { - playlist.mediaSequence = mediaSequence; - playlist.segments.forEach((segment, index) => { - segment.number = playlist.mediaSequence + index; - }); -}; /** - * Updates the media and discontinuity sequence numbers of newPlaylists given oldPlaylists - * and a complete list of timeline starts. + * Since we can not rely on `Object.assign` we provide a simplified version + * that is sufficient for our needs. * - * If no matching playlist is found, only the discontinuity sequence number of the playlist - * will be updated. + * @param {Object} target + * @param {Object | null | undefined} source * - * Since early available timelines are not supported, at least one segment must be present. + * @returns {Object} target + * @throws TypeError if target is not an object * - * @param {Object} config - options object - * @param {Object[]} oldPlaylists - the old playlists to use as a reference - * @param {Object[]} newPlaylists - the new playlists to update - * @param {Object} timelineStarts - all timelineStarts seen in the stream to this point + * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign + * @see https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-object.assign */ +function assign(target, source) { + if (target === null || typeof target !== 'object') { + throw new TypeError('target is not an object') + } + for (var key in source) { + if (Object.prototype.hasOwnProperty.call(source, key)) { + target[key] = source[key] + } + } + return target +} -const updateSequenceNumbers = ({ - oldPlaylists, - newPlaylists, - timelineStarts -}) => { - newPlaylists.forEach(playlist => { - playlist.discontinuitySequence = timelineStarts.findIndex(function ({ - timeline - }) { - return timeline === playlist.timeline; - }); // Playlists NAMEs come from DASH Representation IDs, which are mandatory - // (see ISO_23009-1-2012 5.3.5.2). - // - // If the same Representation existed in a prior Period, it will retain the same NAME. +/** + * All mime types that are allowed as input to `DOMParser.parseFromString` + * + * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString#Argument02 MDN + * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#domparsersupportedtype WHATWG HTML Spec + * @see DOMParser.prototype.parseFromString + */ +var MIME_TYPE = freeze({ + /** + * `text/html`, the only mime type that triggers treating an XML document as HTML. + * + * @see DOMParser.SupportedType.isHTML + * @see https://www.iana.org/assignments/media-types/text/html IANA MimeType registration + * @see https://en.wikipedia.org/wiki/HTML Wikipedia + * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString MDN + * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-domparser-parsefromstring WHATWG HTML Spec + */ + HTML: 'text/html', - const oldPlaylist = findPlaylistWithName(oldPlaylists, playlist.attributes.NAME); + /** + * Helper method to check a mime type if it indicates an HTML document + * + * @param {string} [value] + * @returns {boolean} + * + * @see https://www.iana.org/assignments/media-types/text/html IANA MimeType registration + * @see https://en.wikipedia.org/wiki/HTML Wikipedia + * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString MDN + * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-domparser-parsefromstring */ + isHTML: function (value) { + return value === MIME_TYPE.HTML + }, - if (!oldPlaylist) { - // Since this is a new playlist, the media sequence values can start from 0 without - // consequence. - return; - } // TODO better support for live SIDX - // - // As of this writing, mpd-parser does not support multiperiod SIDX (in live or VOD). - // This is evident by a playlist only having a single SIDX reference. In a multiperiod - // playlist there would need to be multiple SIDX references. In addition, live SIDX is - // not supported when the SIDX properties change on refreshes. - // - // In the future, if support needs to be added, the merging logic here can be called - // after SIDX references are resolved. For now, exit early to prevent exceptions being - // thrown due to undefined references. + /** + * `application/xml`, the standard mime type for XML documents. + * + * @see https://www.iana.org/assignments/media-types/application/xml IANA MimeType registration + * @see https://tools.ietf.org/html/rfc7303#section-9.1 RFC 7303 + * @see https://en.wikipedia.org/wiki/XML_and_MIME Wikipedia + */ + XML_APPLICATION: 'application/xml', + /** + * `text/html`, an alias for `application/xml`. + * + * @see https://tools.ietf.org/html/rfc7303#section-9.2 RFC 7303 + * @see https://www.iana.org/assignments/media-types/text/xml IANA MimeType registration + * @see https://en.wikipedia.org/wiki/XML_and_MIME Wikipedia + */ + XML_TEXT: 'text/xml', - if (playlist.sidx) { - return; - } // Since we don't yet support early available timelines, we don't need to support - // playlists with no segments. + /** + * `application/xhtml+xml`, indicates an XML document that has the default HTML namespace, + * but is parsed as an XML document. + * + * @see https://www.iana.org/assignments/media-types/application/xhtml+xml IANA MimeType registration + * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocument WHATWG DOM Spec + * @see https://en.wikipedia.org/wiki/XHTML Wikipedia + */ + XML_XHTML_APPLICATION: 'application/xhtml+xml', + /** + * `image/svg+xml`, + * + * @see https://www.iana.org/assignments/media-types/image/svg+xml IANA MimeType registration + * @see https://www.w3.org/TR/SVG11/ W3C SVG 1.1 + * @see https://en.wikipedia.org/wiki/Scalable_Vector_Graphics Wikipedia + */ + XML_SVG_IMAGE: 'image/svg+xml', +}) - const firstNewSegment = playlist.segments[0]; - const oldMatchingSegmentIndex = oldPlaylist.segments.findIndex(function (oldSegment) { - return Math.abs(oldSegment.presentationTime - firstNewSegment.presentationTime) < TIME_FUDGE; - }); // No matching segment from the old playlist means the entire playlist was refreshed. - // In this case the media sequence should account for this update, and the new segments - // should be marked as discontinuous from the prior content, since the last prior - // timeline was removed. +/** + * Namespaces that are used in this code base. + * + * @see http://www.w3.org/TR/REC-xml-names + */ +var NAMESPACE = freeze({ + /** + * The XHTML namespace. + * + * @see http://www.w3.org/1999/xhtml + */ + HTML: 'http://www.w3.org/1999/xhtml', - if (oldMatchingSegmentIndex === -1) { - updateMediaSequenceForPlaylist({ - playlist, - mediaSequence: oldPlaylist.mediaSequence + oldPlaylist.segments.length - }); - playlist.segments[0].discontinuity = true; - playlist.discontinuityStarts.unshift(0); // No matching segment does not necessarily mean there's missing content. - // - // If the new playlist's timeline is the same as the last seen segment's timeline, - // then a discontinuity can be added to identify that there's potentially missing - // content. If there's no missing content, the discontinuity should still be rather - // harmless. It's possible that if segment durations are accurate enough, that the - // existence of a gap can be determined using the presentation times and durations, - // but if the segment timing info is off, it may introduce more problems than simply - // adding the discontinuity. - // - // If the new playlist's timeline is different from the last seen segment's timeline, - // then a discontinuity can be added to identify that this is the first seen segment - // of a new timeline. However, the logic at the start of this function that - // determined the disconinuity sequence by timeline index is now off by one (the - // discontinuity of the newest timeline hasn't yet fallen off the manifest...since - // we added it), so the disconinuity sequence must be decremented. - // - // A period may also have a duration of zero, so the case of no segments is handled - // here even though we don't yet support early available periods. + /** + * Checks if `uri` equals `NAMESPACE.HTML`. + * + * @param {string} [uri] + * + * @see NAMESPACE.HTML + */ + isHTML: function (uri) { + return uri === NAMESPACE.HTML + }, - if (!oldPlaylist.segments.length && playlist.timeline > oldPlaylist.timeline || oldPlaylist.segments.length && playlist.timeline > oldPlaylist.segments[oldPlaylist.segments.length - 1].timeline) { - playlist.discontinuitySequence--; - } + /** + * The SVG namespace. + * + * @see http://www.w3.org/2000/svg + */ + SVG: 'http://www.w3.org/2000/svg', - return; - } // If the first segment matched with a prior segment on a discontinuity (it's matching - // on the first segment of a period), then the discontinuitySequence shouldn't be the - // timeline's matching one, but instead should be the one prior, and the first segment - // of the new manifest should be marked with a discontinuity. - // - // The reason for this special case is that discontinuity sequence shows how many - // discontinuities have fallen off of the playlist, and discontinuities are marked on - // the first segment of a new "timeline." Because of this, while DASH will retain that - // Period while the "timeline" exists, HLS keeps track of it via the discontinuity - // sequence, and that first segment is an indicator, but can be removed before that - // timeline is gone. + /** + * The `xml:` namespace. + * + * @see http://www.w3.org/XML/1998/namespace + */ + XML: 'http://www.w3.org/XML/1998/namespace', + /** + * The `xmlns:` namespace + * + * @see https://www.w3.org/2000/xmlns/ + */ + XMLNS: 'http://www.w3.org/2000/xmlns/', +}) - const oldMatchingSegment = oldPlaylist.segments[oldMatchingSegmentIndex]; +exports.assign = assign; +exports.find = find; +exports.freeze = freeze; +exports.MIME_TYPE = MIME_TYPE; +exports.NAMESPACE = NAMESPACE; - if (oldMatchingSegment.discontinuity && !firstNewSegment.discontinuity) { - firstNewSegment.discontinuity = true; - playlist.discontinuityStarts.unshift(0); - playlist.discontinuitySequence--; - } - updateMediaSequenceForPlaylist({ - playlist, - mediaSequence: oldPlaylist.segments[oldMatchingSegmentIndex].number - }); - }); -}; -/** - * Given an old parsed manifest object and a new parsed manifest object, updates the - * sequence and timing values within the new manifest to ensure that it lines up with the - * old. - * - * @param {Array} oldManifest - the old main manifest object - * @param {Array} newManifest - the new main manifest object - * - * @return {Object} the updated new manifest object - */ +/***/ }), -const positionManifestOnTimeline = ({ - oldManifest, - newManifest -}) => { - // Starting from v4.1.2 of the IOP, section 4.4.3.3 states: - // - // "MPD@availabilityStartTime and Period@start shall not be changed over MPD updates." - // - // This was added from https://github.com/Dash-Industry-Forum/DASH-IF-IOP/issues/160 - // - // Because of this change, and the difficulty of supporting periods with changing start - // times, periods with changing start times are not supported. This makes the logic much - // simpler, since periods with the same start time can be considerred the same period - // across refreshes. - // - // To give an example as to the difficulty of handling periods where the start time may - // change, if a single period manifest is refreshed with another manifest with a single - // period, and both the start and end times are increased, then the only way to determine - // if it's a new period or an old one that has changed is to look through the segments of - // each playlist and determine the presentation time bounds to find a match. In addition, - // if the period start changed to exceed the old period end, then there would be no - // match, and it would not be possible to determine whether the refreshed period is a new - // one or the old one. - const oldPlaylists = oldManifest.playlists.concat(getMediaGroupPlaylists(oldManifest)); - const newPlaylists = newManifest.playlists.concat(getMediaGroupPlaylists(newManifest)); // Save all seen timelineStarts to the new manifest. Although this potentially means that - // there's a "memory leak" in that it will never stop growing, in reality, only a couple - // of properties are saved for each seen Period. Even long running live streams won't - // generate too many Periods, unless the stream is watched for decades. In the future, - // this can be optimized by mapping to discontinuity sequence numbers for each timeline, - // but it may not become an issue, and the additional info can be useful for debugging. - - newManifest.timelineStarts = getUniqueTimelineStarts([oldManifest.timelineStarts, newManifest.timelineStarts]); - updateSequenceNumbers({ - oldPlaylists, - newPlaylists, - timelineStarts: newManifest.timelineStarts - }); - return newManifest; -}; - -const generateSidxKey = sidx => sidx && sidx.uri + '-' + byteRangeToString(sidx.byterange); - -const mergeDiscontiguousPlaylists = playlists => { - // Break out playlists into groups based on their baseUrl - const playlistsByBaseUrl = playlists.reduce(function (acc, cur) { - if (!acc[cur.attributes.baseUrl]) { - acc[cur.attributes.baseUrl] = []; - } +/***/ "./node_modules/mpd-parser/node_modules/@xmldom/xmldom/lib/dom-parser.js": +/*!*******************************************************************************!*\ + !*** ./node_modules/mpd-parser/node_modules/@xmldom/xmldom/lib/dom-parser.js ***! + \*******************************************************************************/ +/***/ ((__unused_webpack_module, exports, __webpack_require__) => { - acc[cur.attributes.baseUrl].push(cur); - return acc; - }, {}); - let allPlaylists = []; - Object.values(playlistsByBaseUrl).forEach(playlistGroup => { - const mergedPlaylists = values(playlistGroup.reduce((acc, playlist) => { - // assuming playlist IDs are the same across periods - // TODO: handle multiperiod where representation sets are not the same - // across periods - const name = playlist.attributes.id + (playlist.attributes.lang || ''); +var conventions = __webpack_require__(/*! ./conventions */ "./node_modules/mpd-parser/node_modules/@xmldom/xmldom/lib/conventions.js"); +var dom = __webpack_require__(/*! ./dom */ "./node_modules/mpd-parser/node_modules/@xmldom/xmldom/lib/dom.js") +var entities = __webpack_require__(/*! ./entities */ "./node_modules/mpd-parser/node_modules/@xmldom/xmldom/lib/entities.js"); +var sax = __webpack_require__(/*! ./sax */ "./node_modules/mpd-parser/node_modules/@xmldom/xmldom/lib/sax.js"); - if (!acc[name]) { - // First Period - acc[name] = playlist; - acc[name].attributes.timelineStarts = []; - } else { - // Subsequent Periods - if (playlist.segments) { - // first segment of subsequent periods signal a discontinuity - if (playlist.segments[0]) { - playlist.segments[0].discontinuity = true; - } +var DOMImplementation = dom.DOMImplementation; - acc[name].segments.push(...playlist.segments); - } // bubble up contentProtection, this assumes all DRM content - // has the same contentProtection +var NAMESPACE = conventions.NAMESPACE; +var ParseError = sax.ParseError; +var XMLReader = sax.XMLReader; - if (playlist.attributes.contentProtection) { - acc[name].attributes.contentProtection = playlist.attributes.contentProtection; - } - } +/** + * Normalizes line ending according to https://www.w3.org/TR/xml11/#sec-line-ends: + * + * > XML parsed entities are often stored in computer files which, + * > for editing convenience, are organized into lines. + * > These lines are typically separated by some combination + * > of the characters CARRIAGE RETURN (#xD) and LINE FEED (#xA). + * > + * > To simplify the tasks of applications, the XML processor must behave + * > as if it normalized all line breaks in external parsed entities (including the document entity) + * > on input, before parsing, by translating all of the following to a single #xA character: + * > + * > 1. the two-character sequence #xD #xA + * > 2. the two-character sequence #xD #x85 + * > 3. the single character #x85 + * > 4. the single character #x2028 + * > 5. any #xD character that is not immediately followed by #xA or #x85. + * + * @param {string} input + * @returns {string} + */ +function normalizeLineEndings(input) { + return input + .replace(/\r[\n\u0085]/g, '\n') + .replace(/[\r\u0085\u2028]/g, '\n') +} - acc[name].attributes.timelineStarts.push({ - // Although they represent the same number, it's important to have both to make it - // compatible with HLS potentially having a similar attribute. - start: playlist.attributes.periodStart, - timeline: playlist.attributes.periodStart - }); - return acc; - }, {})); - allPlaylists = allPlaylists.concat(mergedPlaylists); - }); - return allPlaylists.map(playlist => { - playlist.discontinuityStarts = findIndexes(playlist.segments || [], 'discontinuity'); - return playlist; - }); -}; +/** + * @typedef Locator + * @property {number} [columnNumber] + * @property {number} [lineNumber] + */ -const addSidxSegmentsToPlaylist = (playlist, sidxMapping) => { - const sidxKey = generateSidxKey(playlist.sidx); - const sidxMatch = sidxKey && sidxMapping[sidxKey] && sidxMapping[sidxKey].sidx; +/** + * @typedef DOMParserOptions + * @property {DOMHandler} [domBuilder] + * @property {Function} [errorHandler] + * @property {(string) => string} [normalizeLineEndings] used to replace line endings before parsing + * defaults to `normalizeLineEndings` + * @property {Locator} [locator] + * @property {Record} [xmlns] + * + * @see normalizeLineEndings + */ - if (sidxMatch) { - addSidxSegmentsToPlaylist$1(playlist, sidxMatch, playlist.sidx.resolvedUri); - } +/** + * The DOMParser interface provides the ability to parse XML or HTML source code + * from a string into a DOM `Document`. + * + * _xmldom is different from the spec in that it allows an `options` parameter, + * to override the default behavior._ + * + * @param {DOMParserOptions} [options] + * @constructor + * + * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser + * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-parsing-and-serialization + */ +function DOMParser(options){ + this.options = options ||{locator:{}}; +} - return playlist; -}; -const addSidxSegmentsToPlaylists = (playlists, sidxMapping = {}) => { - if (!Object.keys(sidxMapping).length) { - return playlists; - } +DOMParser.prototype.parseFromString = function(source,mimeType){ + var options = this.options; + var sax = new XMLReader(); + var domBuilder = options.domBuilder || new DOMHandler();//contentHandler and LexicalHandler + var errorHandler = options.errorHandler; + var locator = options.locator; + var defaultNSMap = options.xmlns||{}; + var isHTML = /\/x?html?$/.test(mimeType);//mimeType.toLowerCase().indexOf('html') > -1; + var entityMap = isHTML ? entities.HTML_ENTITIES : entities.XML_ENTITIES; + if(locator){ + domBuilder.setDocumentLocator(locator) + } - for (const i in playlists) { - playlists[i] = addSidxSegmentsToPlaylist(playlists[i], sidxMapping); - } + sax.errorHandler = buildErrorHandler(errorHandler,domBuilder,locator); + sax.domBuilder = options.domBuilder || domBuilder; + if(isHTML){ + defaultNSMap[''] = NAMESPACE.HTML; + } + defaultNSMap.xml = defaultNSMap.xml || NAMESPACE.XML; + var normalize = options.normalizeLineEndings || normalizeLineEndings; + if (source && typeof source === 'string') { + sax.parse( + normalize(source), + defaultNSMap, + entityMap + ) + } else { + sax.errorHandler.error('invalid doc source') + } + return domBuilder.doc; +} +function buildErrorHandler(errorImpl,domBuilder,locator){ + if(!errorImpl){ + if(domBuilder instanceof DOMHandler){ + return domBuilder; + } + errorImpl = domBuilder ; + } + var errorHandler = {} + var isCallback = errorImpl instanceof Function; + locator = locator||{} + function build(key){ + var fn = errorImpl[key]; + if(!fn && isCallback){ + fn = errorImpl.length == 2?function(msg){errorImpl(key,msg)}:errorImpl; + } + errorHandler[key] = fn && function(msg){ + fn('[xmldom '+key+']\t'+msg+_locator(locator)); + }||function(){}; + } + build('warning'); + build('error'); + build('fatalError'); + return errorHandler; +} - return playlists; -}; -const formatAudioPlaylist = ({ - attributes, - segments, - sidx, - mediaSequence, - discontinuitySequence, - discontinuityStarts -}, isAudioOnly) => { - const playlist = { - attributes: { - NAME: attributes.id, - BANDWIDTH: attributes.bandwidth, - CODECS: attributes.codecs, - ['PROGRAM-ID']: 1 - }, - uri: '', - endList: attributes.type === 'static', - timeline: attributes.periodStart, - resolvedUri: attributes.baseUrl || '', - targetDuration: attributes.duration, - discontinuitySequence, - discontinuityStarts, - timelineStarts: attributes.timelineStarts, - mediaSequence, - segments - }; +//console.log('#\n\n\n\n\n\n\n####') +/** + * +ContentHandler+ErrorHandler + * +LexicalHandler+EntityResolver2 + * -DeclHandler-DTDHandler + * + * DefaultHandler:EntityResolver, DTDHandler, ContentHandler, ErrorHandler + * DefaultHandler2:DefaultHandler,LexicalHandler, DeclHandler, EntityResolver2 + * @link http://www.saxproject.org/apidoc/org/xml/sax/helpers/DefaultHandler.html + */ +function DOMHandler() { + this.cdata = false; +} +function position(locator,node){ + node.lineNumber = locator.lineNumber; + node.columnNumber = locator.columnNumber; +} +/** + * @see org.xml.sax.ContentHandler#startDocument + * @link http://www.saxproject.org/apidoc/org/xml/sax/ContentHandler.html + */ +DOMHandler.prototype = { + startDocument : function() { + this.doc = new DOMImplementation().createDocument(null, null, null); + if (this.locator) { + this.doc.documentURI = this.locator.systemId; + } + }, + startElement:function(namespaceURI, localName, qName, attrs) { + var doc = this.doc; + var el = doc.createElementNS(namespaceURI, qName||localName); + var len = attrs.length; + appendElement(this, el); + this.currentElement = el; - if (attributes.contentProtection) { - playlist.contentProtection = attributes.contentProtection; - } + this.locator && position(this.locator,el) + for (var i = 0 ; i < len; i++) { + var namespaceURI = attrs.getURI(i); + var value = attrs.getValue(i); + var qName = attrs.getQName(i); + var attr = doc.createAttributeNS(namespaceURI, qName); + this.locator &&position(attrs.getLocator(i),attr); + attr.value = attr.nodeValue = value; + el.setAttributeNode(attr) + } + }, + endElement:function(namespaceURI, localName, qName) { + var current = this.currentElement + var tagName = current.tagName; + this.currentElement = current.parentNode; + }, + startPrefixMapping:function(prefix, uri) { + }, + endPrefixMapping:function(prefix) { + }, + processingInstruction:function(target, data) { + var ins = this.doc.createProcessingInstruction(target, data); + this.locator && position(this.locator,ins) + appendElement(this, ins); + }, + ignorableWhitespace:function(ch, start, length) { + }, + characters:function(chars, start, length) { + chars = _toString.apply(this,arguments) + //console.log(chars) + if(chars){ + if (this.cdata) { + var charNode = this.doc.createCDATASection(chars); + } else { + var charNode = this.doc.createTextNode(chars); + } + if(this.currentElement){ + this.currentElement.appendChild(charNode); + }else if(/^\s*$/.test(chars)){ + this.doc.appendChild(charNode); + //process xml + } + this.locator && position(this.locator,charNode) + } + }, + skippedEntity:function(name) { + }, + endDocument:function() { + this.doc.normalize(); + }, + setDocumentLocator:function (locator) { + if(this.locator = locator){// && !('lineNumber' in locator)){ + locator.lineNumber = 0; + } + }, + //LexicalHandler + comment:function(chars, start, length) { + chars = _toString.apply(this,arguments) + var comm = this.doc.createComment(chars); + this.locator && position(this.locator,comm) + appendElement(this, comm); + }, - if (attributes.serviceLocation) { - playlist.attributes.serviceLocation = attributes.serviceLocation; - } + startCDATA:function() { + //used in characters() methods + this.cdata = true; + }, + endCDATA:function() { + this.cdata = false; + }, - if (sidx) { - playlist.sidx = sidx; - } + startDTD:function(name, publicId, systemId) { + var impl = this.doc.implementation; + if (impl && impl.createDocumentType) { + var dt = impl.createDocumentType(name, publicId, systemId); + this.locator && position(this.locator,dt) + appendElement(this, dt); + this.doc.doctype = dt; + } + }, + /** + * @see org.xml.sax.ErrorHandler + * @link http://www.saxproject.org/apidoc/org/xml/sax/ErrorHandler.html + */ + warning:function(error) { + console.warn('[xmldom warning]\t'+error,_locator(this.locator)); + }, + error:function(error) { + console.error('[xmldom error]\t'+error,_locator(this.locator)); + }, + fatalError:function(error) { + throw new ParseError(error, this.locator); + } +} +function _locator(l){ + if(l){ + return '\n@'+(l.systemId ||'')+'#[line:'+l.lineNumber+',col:'+l.columnNumber+']' + } +} +function _toString(chars,start,length){ + if(typeof chars == 'string'){ + return chars.substr(start,length) + }else{//java sax connect width xmldom on rhino(what about: "? && !(chars instanceof String)") + if(chars.length >= start+length || start){ + return new java.lang.String(chars,start,length)+''; + } + return chars; + } +} - if (isAudioOnly) { - playlist.attributes.AUDIO = 'audio'; - playlist.attributes.SUBTITLES = 'subs'; - } +/* + * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/LexicalHandler.html + * used method of org.xml.sax.ext.LexicalHandler: + * #comment(chars, start, length) + * #startCDATA() + * #endCDATA() + * #startDTD(name, publicId, systemId) + * + * + * IGNORED method of org.xml.sax.ext.LexicalHandler: + * #endDTD() + * #startEntity(name) + * #endEntity(name) + * + * + * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/DeclHandler.html + * IGNORED method of org.xml.sax.ext.DeclHandler + * #attributeDecl(eName, aName, type, mode, value) + * #elementDecl(name, model) + * #externalEntityDecl(name, publicId, systemId) + * #internalEntityDecl(name, value) + * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/EntityResolver2.html + * IGNORED method of org.xml.sax.EntityResolver2 + * #resolveEntity(String name,String publicId,String baseURI,String systemId) + * #resolveEntity(publicId, systemId) + * #getExternalSubset(name, baseURI) + * @link http://www.saxproject.org/apidoc/org/xml/sax/DTDHandler.html + * IGNORED method of org.xml.sax.DTDHandler + * #notationDecl(name, publicId, systemId) {}; + * #unparsedEntityDecl(name, publicId, systemId, notationName) {}; + */ +"endDTD,startEntity,endEntity,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,resolveEntity,getExternalSubset,notationDecl,unparsedEntityDecl".replace(/\w+/g,function(key){ + DOMHandler.prototype[key] = function(){return null} +}) - return playlist; -}; -const formatVttPlaylist = ({ - attributes, - segments, - mediaSequence, - discontinuityStarts, - discontinuitySequence -}) => { - if (typeof segments === 'undefined') { - // vtt tracks may use single file in BaseURL - segments = [{ - uri: attributes.baseUrl, - timeline: attributes.periodStart, - resolvedUri: attributes.baseUrl || '', - duration: attributes.sourceDuration, - number: 0 - }]; // targetDuration should be the same duration as the only segment +/* Private static helpers treated below as private instance methods, so don't need to add these to the public API; we might use a Relator to also get rid of non-standard public properties */ +function appendElement (hander,node) { + if (!hander.currentElement) { + hander.doc.appendChild(node); + } else { + hander.currentElement.appendChild(node); + } +}//appendChild and setAttributeNS are preformance key - attributes.duration = attributes.sourceDuration; - } +exports.__DOMHandler = DOMHandler; +exports.normalizeLineEndings = normalizeLineEndings; +exports.DOMParser = DOMParser; - const m3u8Attributes = { - NAME: attributes.id, - BANDWIDTH: attributes.bandwidth, - ['PROGRAM-ID']: 1 - }; - if (attributes.codecs) { - m3u8Attributes.CODECS = attributes.codecs; - } +/***/ }), - const vttPlaylist = { - attributes: m3u8Attributes, - uri: '', - endList: attributes.type === 'static', - timeline: attributes.periodStart, - resolvedUri: attributes.baseUrl || '', - targetDuration: attributes.duration, - timelineStarts: attributes.timelineStarts, - discontinuityStarts, - discontinuitySequence, - mediaSequence, - segments - }; +/***/ "./node_modules/mpd-parser/node_modules/@xmldom/xmldom/lib/dom.js": +/*!************************************************************************!*\ + !*** ./node_modules/mpd-parser/node_modules/@xmldom/xmldom/lib/dom.js ***! + \************************************************************************/ +/***/ ((__unused_webpack_module, exports, __webpack_require__) => { - if (attributes.serviceLocation) { - vttPlaylist.attributes.serviceLocation = attributes.serviceLocation; - } +var conventions = __webpack_require__(/*! ./conventions */ "./node_modules/mpd-parser/node_modules/@xmldom/xmldom/lib/conventions.js"); - return vttPlaylist; -}; -const organizeAudioPlaylists = (playlists, sidxMapping = {}, isAudioOnly = false) => { - let mainPlaylist; - const formattedPlaylists = playlists.reduce((a, playlist) => { - const role = playlist.attributes.role && playlist.attributes.role.value || ''; - const language = playlist.attributes.lang || ''; - let label = playlist.attributes.label || 'main'; +var find = conventions.find; +var NAMESPACE = conventions.NAMESPACE; - if (language && !playlist.attributes.label) { - const roleLabel = role ? ` (${role})` : ''; - label = `${playlist.attributes.lang}${roleLabel}`; - } +/** + * A prerequisite for `[].filter`, to drop elements that are empty + * @param {string} input + * @returns {boolean} + */ +function notEmptyString (input) { + return input !== '' +} +/** + * @see https://infra.spec.whatwg.org/#split-on-ascii-whitespace + * @see https://infra.spec.whatwg.org/#ascii-whitespace + * + * @param {string} input + * @returns {string[]} (can be empty) + */ +function splitOnASCIIWhitespace(input) { + // U+0009 TAB, U+000A LF, U+000C FF, U+000D CR, U+0020 SPACE + return input ? input.split(/[\t\n\f\r ]+/).filter(notEmptyString) : [] +} - if (!a[label]) { - a[label] = { - language, - autoselect: true, - default: role === 'main', - playlists: [], - uri: '' - }; - } +/** + * Adds element as a key to current if it is not already present. + * + * @param {Record} current + * @param {string} element + * @returns {Record} + */ +function orderedSetReducer (current, element) { + if (!current.hasOwnProperty(element)) { + current[element] = true; + } + return current; +} - const formatted = addSidxSegmentsToPlaylist(formatAudioPlaylist(playlist, isAudioOnly), sidxMapping); - a[label].playlists.push(formatted); +/** + * @see https://infra.spec.whatwg.org/#ordered-set + * @param {string} input + * @returns {string[]} + */ +function toOrderedSet(input) { + if (!input) return []; + var list = splitOnASCIIWhitespace(input); + return Object.keys(list.reduce(orderedSetReducer, {})) +} - if (typeof mainPlaylist === 'undefined' && role === 'main') { - mainPlaylist = playlist; - mainPlaylist.default = true; - } +/** + * Uses `list.indexOf` to implement something like `Array.prototype.includes`, + * which we can not rely on being available. + * + * @param {any[]} list + * @returns {function(any): boolean} + */ +function arrayIncludes (list) { + return function(element) { + return list && list.indexOf(element) !== -1; + } +} - return a; - }, {}); // if no playlists have role "main", mark the first as main +function copy(src,dest){ + for(var p in src){ + if (Object.prototype.hasOwnProperty.call(src, p)) { + dest[p] = src[p]; + } + } +} - if (!mainPlaylist) { - const firstLabel = Object.keys(formattedPlaylists)[0]; - formattedPlaylists[firstLabel].default = true; - } +/** +^\w+\.prototype\.([_\w]+)\s*=\s*((?:.*\{\s*?[\r\n][\s\S]*?^})|\S.*?(?=[;\r\n]));? +^\w+\.prototype\.([_\w]+)\s*=\s*(\S.*?(?=[;\r\n]));? + */ +function _extends(Class,Super){ + var pt = Class.prototype; + if(!(pt instanceof Super)){ + function t(){}; + t.prototype = Super.prototype; + t = new t(); + copy(pt,t); + Class.prototype = pt = t; + } + if(pt.constructor != Class){ + if(typeof Class != 'function'){ + console.error("unknown Class:"+Class) + } + pt.constructor = Class + } +} - return formattedPlaylists; -}; -const organizeVttPlaylists = (playlists, sidxMapping = {}) => { - return playlists.reduce((a, playlist) => { - const label = playlist.attributes.label || playlist.attributes.lang || 'text'; +// Node Types +var NodeType = {} +var ELEMENT_NODE = NodeType.ELEMENT_NODE = 1; +var ATTRIBUTE_NODE = NodeType.ATTRIBUTE_NODE = 2; +var TEXT_NODE = NodeType.TEXT_NODE = 3; +var CDATA_SECTION_NODE = NodeType.CDATA_SECTION_NODE = 4; +var ENTITY_REFERENCE_NODE = NodeType.ENTITY_REFERENCE_NODE = 5; +var ENTITY_NODE = NodeType.ENTITY_NODE = 6; +var PROCESSING_INSTRUCTION_NODE = NodeType.PROCESSING_INSTRUCTION_NODE = 7; +var COMMENT_NODE = NodeType.COMMENT_NODE = 8; +var DOCUMENT_NODE = NodeType.DOCUMENT_NODE = 9; +var DOCUMENT_TYPE_NODE = NodeType.DOCUMENT_TYPE_NODE = 10; +var DOCUMENT_FRAGMENT_NODE = NodeType.DOCUMENT_FRAGMENT_NODE = 11; +var NOTATION_NODE = NodeType.NOTATION_NODE = 12; - if (!a[label]) { - a[label] = { - language: label, - default: false, - autoselect: false, - playlists: [], - uri: '' - }; - } +// ExceptionCode +var ExceptionCode = {} +var ExceptionMessage = {}; +var INDEX_SIZE_ERR = ExceptionCode.INDEX_SIZE_ERR = ((ExceptionMessage[1]="Index size error"),1); +var DOMSTRING_SIZE_ERR = ExceptionCode.DOMSTRING_SIZE_ERR = ((ExceptionMessage[2]="DOMString size error"),2); +var HIERARCHY_REQUEST_ERR = ExceptionCode.HIERARCHY_REQUEST_ERR = ((ExceptionMessage[3]="Hierarchy request error"),3); +var WRONG_DOCUMENT_ERR = ExceptionCode.WRONG_DOCUMENT_ERR = ((ExceptionMessage[4]="Wrong document"),4); +var INVALID_CHARACTER_ERR = ExceptionCode.INVALID_CHARACTER_ERR = ((ExceptionMessage[5]="Invalid character"),5); +var NO_DATA_ALLOWED_ERR = ExceptionCode.NO_DATA_ALLOWED_ERR = ((ExceptionMessage[6]="No data allowed"),6); +var NO_MODIFICATION_ALLOWED_ERR = ExceptionCode.NO_MODIFICATION_ALLOWED_ERR = ((ExceptionMessage[7]="No modification allowed"),7); +var NOT_FOUND_ERR = ExceptionCode.NOT_FOUND_ERR = ((ExceptionMessage[8]="Not found"),8); +var NOT_SUPPORTED_ERR = ExceptionCode.NOT_SUPPORTED_ERR = ((ExceptionMessage[9]="Not supported"),9); +var INUSE_ATTRIBUTE_ERR = ExceptionCode.INUSE_ATTRIBUTE_ERR = ((ExceptionMessage[10]="Attribute in use"),10); +//level2 +var INVALID_STATE_ERR = ExceptionCode.INVALID_STATE_ERR = ((ExceptionMessage[11]="Invalid state"),11); +var SYNTAX_ERR = ExceptionCode.SYNTAX_ERR = ((ExceptionMessage[12]="Syntax error"),12); +var INVALID_MODIFICATION_ERR = ExceptionCode.INVALID_MODIFICATION_ERR = ((ExceptionMessage[13]="Invalid modification"),13); +var NAMESPACE_ERR = ExceptionCode.NAMESPACE_ERR = ((ExceptionMessage[14]="Invalid namespace"),14); +var INVALID_ACCESS_ERR = ExceptionCode.INVALID_ACCESS_ERR = ((ExceptionMessage[15]="Invalid access"),15); - a[label].playlists.push(addSidxSegmentsToPlaylist(formatVttPlaylist(playlist), sidxMapping)); - return a; - }, {}); +/** + * DOM Level 2 + * Object DOMException + * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/ecma-script-binding.html + * @see http://www.w3.org/TR/REC-DOM-Level-1/ecma-script-language-binding.html + */ +function DOMException(code, message) { + if(message instanceof Error){ + var error = message; + }else{ + error = this; + Error.call(this, ExceptionMessage[code]); + this.message = ExceptionMessage[code]; + if(Error.captureStackTrace) Error.captureStackTrace(this, DOMException); + } + error.code = code; + if(message) this.message = this.message + ": " + message; + return error; }; +DOMException.prototype = Error.prototype; +copy(ExceptionCode,DOMException) -const organizeCaptionServices = captionServices => captionServices.reduce((svcObj, svc) => { - if (!svc) { - return svcObj; - } - - svc.forEach(service => { - const { - channel, - language - } = service; - svcObj[language] = { - autoselect: false, - default: false, - instreamId: channel, - language - }; - - if (service.hasOwnProperty('aspectRatio')) { - svcObj[language].aspectRatio = service.aspectRatio; - } - - if (service.hasOwnProperty('easyReader')) { - svcObj[language].easyReader = service.easyReader; - } - - if (service.hasOwnProperty('3D')) { - svcObj[language]['3D'] = service['3D']; - } - }); - return svcObj; -}, {}); - -const formatVideoPlaylist = ({ - attributes, - segments, - sidx, - discontinuityStarts -}) => { - const playlist = { - attributes: { - NAME: attributes.id, - AUDIO: 'audio', - SUBTITLES: 'subs', - RESOLUTION: { - width: attributes.width, - height: attributes.height - }, - CODECS: attributes.codecs, - BANDWIDTH: attributes.bandwidth, - ['PROGRAM-ID']: 1 - }, - uri: '', - endList: attributes.type === 'static', - timeline: attributes.periodStart, - resolvedUri: attributes.baseUrl || '', - targetDuration: attributes.duration, - discontinuityStarts, - timelineStarts: attributes.timelineStarts, - segments - }; - - if (attributes.frameRate) { - playlist.attributes['FRAME-RATE'] = attributes.frameRate; - } - - if (attributes.contentProtection) { - playlist.contentProtection = attributes.contentProtection; - } - - if (attributes.serviceLocation) { - playlist.attributes.serviceLocation = attributes.serviceLocation; - } - - if (sidx) { - playlist.sidx = sidx; - } - - return playlist; +/** + * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-536297177 + * The NodeList interface provides the abstraction of an ordered collection of nodes, without defining or constraining how this collection is implemented. NodeList objects in the DOM are live. + * The items in the NodeList are accessible via an integral index, starting from 0. + */ +function NodeList() { +}; +NodeList.prototype = { + /** + * The number of nodes in the list. The range of valid child node indices is 0 to length-1 inclusive. + * @standard level1 + */ + length:0, + /** + * Returns the indexth item in the collection. If index is greater than or equal to the number of nodes in the list, this returns null. + * @standard level1 + * @param index unsigned long + * Index into the collection. + * @return Node + * The node at the indexth position in the NodeList, or null if that is not a valid index. + */ + item: function(index) { + return index >= 0 && index < this.length ? this[index] : null; + }, + toString:function(isHTML,nodeFilter){ + for(var buf = [], i = 0;i attributes.mimeType === 'video/mp4' || attributes.mimeType === 'video/webm' || attributes.contentType === 'video'; +function LiveNodeList(node,refresh){ + this._node = node; + this._refresh = refresh + _updateLiveList(this); +} +function _updateLiveList(list){ + var inc = list._node._inc || list._node.ownerDocument._inc; + if (list._inc !== inc) { + var ls = list._refresh(list._node); + __set__(list,'length',ls.length); + if (!list.$$length || ls.length < list.$$length) { + for (var i = ls.length; i in list; i++) { + if (Object.prototype.hasOwnProperty.call(list, i)) { + delete list[i]; + } + } + } + copy(ls,list); + list._inc = inc; + } +} +LiveNodeList.prototype.item = function(i){ + _updateLiveList(this); + return this[i] || null; +} -const audioOnly = ({ - attributes -}) => attributes.mimeType === 'audio/mp4' || attributes.mimeType === 'audio/webm' || attributes.contentType === 'audio'; +_extends(LiveNodeList,NodeList); -const vttOnly = ({ - attributes -}) => attributes.mimeType === 'text/vtt' || attributes.contentType === 'text'; /** - * Contains start and timeline properties denoting a timeline start. For DASH, these will - * be the same number. - * - * @typedef {Object} TimelineStart - * @property {number} start - the start time of the timeline - * @property {number} timeline - the timeline number + * Objects implementing the NamedNodeMap interface are used + * to represent collections of nodes that can be accessed by name. + * Note that NamedNodeMap does not inherit from NodeList; + * NamedNodeMaps are not maintained in any particular order. + * Objects contained in an object implementing NamedNodeMap may also be accessed by an ordinal index, + * but this is simply to allow convenient enumeration of the contents of a NamedNodeMap, + * and does not imply that the DOM specifies an order to these Nodes. + * NamedNodeMap objects in the DOM are live. + * used for attributes or DocumentType entities */ +function NamedNodeMap() { +}; -/** - * Adds appropriate media and discontinuity sequence values to the segments and playlists. - * - * Throughout mpd-parser, the `number` attribute is used in relation to `startNumber`, a - * DASH specific attribute used in constructing segment URI's from templates. However, from - * an HLS perspective, the `number` attribute on a segment would be its `mediaSequence` - * value, which should start at the original media sequence value (or 0) and increment by 1 - * for each segment thereafter. Since DASH's `startNumber` values are independent per - * period, it doesn't make sense to use it for `number`. Instead, assume everything starts - * from a 0 mediaSequence value and increment from there. - * - * Note that VHS currently doesn't use the `number` property, but it can be helpful for - * debugging and making sense of the manifest. - * - * For live playlists, to account for values increasing in manifests when periods are - * removed on refreshes, merging logic should be used to update the numbers to their - * appropriate values (to ensure they're sequential and increasing). - * - * @param {Object[]} playlists - the playlists to update - * @param {TimelineStart[]} timelineStarts - the timeline starts for the manifest - */ +function _findNodeIndex(list,node){ + var i = list.length; + while(i--){ + if(list[i] === node){return i} + } +} + +function _addNamedNode(el,list,newAttr,oldAttr){ + if(oldAttr){ + list[_findNodeIndex(list,oldAttr)] = newAttr; + }else{ + list[list.length++] = newAttr; + } + if(el){ + newAttr.ownerElement = el; + var doc = el.ownerDocument; + if(doc){ + oldAttr && _onRemoveAttribute(doc,el,oldAttr); + _onAddAttribute(doc,el,newAttr); + } + } +} +function _removeNamedNode(el,list,attr){ + //console.log('remove attr:'+attr) + var i = _findNodeIndex(list,attr); + if(i>=0){ + var lastIndex = list.length-1 + while(i0 || key == 'xmlns'){ +// return null; +// } + //console.log() + var i = this.length; + while(i--){ + var attr = this[i]; + //console.log(attr.nodeName,key) + if(attr.nodeName == key){ + return attr; + } + } + }, + setNamedItem: function(attr) { + var el = attr.ownerElement; + if(el && el!=this._ownerElement){ + throw new DOMException(INUSE_ATTRIBUTE_ERR); + } + var oldAttr = this.getNamedItem(attr.nodeName); + _addNamedNode(this._ownerElement,this,attr,oldAttr); + return oldAttr; + }, + /* returns Node */ + setNamedItemNS: function(attr) {// raises: WRONG_DOCUMENT_ERR,NO_MODIFICATION_ALLOWED_ERR,INUSE_ATTRIBUTE_ERR + var el = attr.ownerElement, oldAttr; + if(el && el!=this._ownerElement){ + throw new DOMException(INUSE_ATTRIBUTE_ERR); + } + oldAttr = this.getNamedItemNS(attr.namespaceURI,attr.localName); + _addNamedNode(this._ownerElement,this,attr,oldAttr); + return oldAttr; + }, + /* returns Node */ + removeNamedItem: function(key) { + var attr = this.getNamedItem(key); + _removeNamedNode(this._ownerElement,this,attr); + return attr; -const addMediaSequenceValues = (playlists, timelineStarts) => { - // increment all segments sequentially - playlists.forEach(playlist => { - playlist.mediaSequence = 0; - playlist.discontinuitySequence = timelineStarts.findIndex(function ({ - timeline - }) { - return timeline === playlist.timeline; - }); - if (!playlist.segments) { - return; - } + },// raises: NOT_FOUND_ERR,NO_MODIFICATION_ALLOWED_ERR - playlist.segments.forEach((segment, index) => { - segment.number = index; - }); - }); + //for level2 + removeNamedItemNS:function(namespaceURI,localName){ + var attr = this.getNamedItemNS(namespaceURI,localName); + _removeNamedNode(this._ownerElement,this,attr); + return attr; + }, + getNamedItemNS: function(namespaceURI, localName) { + var i = this.length; + while(i--){ + var node = this[i]; + if(node.localName == localName && node.namespaceURI == namespaceURI){ + return node; + } + } + return null; + } }; + /** - * Given a media group object, flattens all playlists within the media group into a single - * array. + * The DOMImplementation interface represents an object providing methods + * which are not dependent on any particular document. + * Such an object is returned by the `Document.implementation` property. * - * @param {Object} mediaGroupObject - the media group object + * __The individual methods describe the differences compared to the specs.__ * - * @return {Object[]} - * The media group playlists + * @constructor + * + * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation MDN + * @see https://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-102161490 DOM Level 1 Core (Initial) + * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#ID-102161490 DOM Level 2 Core + * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#ID-102161490 DOM Level 3 Core + * @see https://dom.spec.whatwg.org/#domimplementation DOM Living Standard */ +function DOMImplementation() { +} -const flattenMediaGroupPlaylists = mediaGroupObject => { - if (!mediaGroupObject) { - return []; - } +DOMImplementation.prototype = { + /** + * The DOMImplementation.hasFeature() method returns a Boolean flag indicating if a given feature is supported. + * The different implementations fairly diverged in what kind of features were reported. + * The latest version of the spec settled to force this method to always return true, where the functionality was accurate and in use. + * + * @deprecated It is deprecated and modern browsers return true in all cases. + * + * @param {string} feature + * @param {string} [version] + * @returns {boolean} always true + * + * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/hasFeature MDN + * @see https://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-5CED94D7 DOM Level 1 Core + * @see https://dom.spec.whatwg.org/#dom-domimplementation-hasfeature DOM Living Standard + */ + hasFeature: function(feature, version) { + return true; + }, + /** + * Creates an XML Document object of the specified type with its document element. + * + * __It behaves slightly different from the description in the living standard__: + * - There is no interface/class `XMLDocument`, it returns a `Document` instance. + * - `contentType`, `encoding`, `mode`, `origin`, `url` fields are currently not declared. + * - this implementation is not validating names or qualified names + * (when parsing XML strings, the SAX parser takes care of that) + * + * @param {string|null} namespaceURI + * @param {string} qualifiedName + * @param {DocumentType=null} doctype + * @returns {Document} + * + * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/createDocument MDN + * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#Level-2-Core-DOM-createDocument DOM Level 2 Core (initial) + * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocument DOM Level 2 Core + * + * @see https://dom.spec.whatwg.org/#validate-and-extract DOM: Validate and extract + * @see https://www.w3.org/TR/xml/#NT-NameStartChar XML Spec: Names + * @see https://www.w3.org/TR/xml-names/#ns-qualnames XML Namespaces: Qualified names + */ + createDocument: function(namespaceURI, qualifiedName, doctype){ + var doc = new Document(); + doc.implementation = this; + doc.childNodes = new NodeList(); + doc.doctype = doctype || null; + if (doctype){ + doc.appendChild(doctype); + } + if (qualifiedName){ + var root = doc.createElementNS(namespaceURI, qualifiedName); + doc.appendChild(root); + } + return doc; + }, + /** + * Returns a doctype, with the given `qualifiedName`, `publicId`, and `systemId`. + * + * __This behavior is slightly different from the in the specs__: + * - this implementation is not validating names or qualified names + * (when parsing XML strings, the SAX parser takes care of that) + * + * @param {string} qualifiedName + * @param {string} [publicId] + * @param {string} [systemId] + * @returns {DocumentType} which can either be used with `DOMImplementation.createDocument` upon document creation + * or can be put into the document via methods like `Node.insertBefore()` or `Node.replaceChild()` + * + * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/createDocumentType MDN + * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#Level-2-Core-DOM-createDocType DOM Level 2 Core + * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocumenttype DOM Living Standard + * + * @see https://dom.spec.whatwg.org/#validate-and-extract DOM: Validate and extract + * @see https://www.w3.org/TR/xml/#NT-NameStartChar XML Spec: Names + * @see https://www.w3.org/TR/xml-names/#ns-qualnames XML Namespaces: Qualified names + */ + createDocumentType: function(qualifiedName, publicId, systemId){ + var node = new DocumentType(); + node.name = qualifiedName; + node.nodeName = qualifiedName; + node.publicId = publicId || ''; + node.systemId = systemId || ''; - return Object.keys(mediaGroupObject).reduce((acc, label) => { - const labelContents = mediaGroupObject[label]; - return acc.concat(labelContents.playlists); - }, []); + return node; + } }; -const toM3u8 = ({ - dashPlaylists, - locations, - contentSteering, - sidxMapping = {}, - previousManifest, - eventStream -}) => { - if (!dashPlaylists.length) { - return {}; - } // grab all main manifest attributes - const { - sourceDuration: duration, - type, - suggestedPresentationDelay, - minimumUpdatePeriod - } = dashPlaylists[0].attributes; - const videoPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(videoOnly)).map(formatVideoPlaylist); - const audioPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(audioOnly)); - const vttPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(vttOnly)); - const captions = dashPlaylists.map(playlist => playlist.attributes.captionServices).filter(Boolean); - const manifest = { - allowCache: true, - discontinuityStarts: [], - segments: [], - endList: true, - mediaGroups: { - AUDIO: {}, - VIDEO: {}, - ['CLOSED-CAPTIONS']: {}, - SUBTITLES: {} - }, - uri: '', - duration, - playlists: addSidxSegmentsToPlaylists(videoPlaylists, sidxMapping) - }; +/** + * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-1950641247 + */ - if (minimumUpdatePeriod >= 0) { - manifest.minimumUpdatePeriod = minimumUpdatePeriod * 1000; - } +function Node() { +}; - if (locations) { - manifest.locations = locations; - } +Node.prototype = { + firstChild : null, + lastChild : null, + previousSibling : null, + nextSibling : null, + attributes : null, + parentNode : null, + childNodes : null, + ownerDocument : null, + nodeValue : null, + namespaceURI : null, + prefix : null, + localName : null, + // Modified in DOM Level 2: + insertBefore:function(newChild, refChild){//raises + return _insertBefore(this,newChild,refChild); + }, + replaceChild:function(newChild, oldChild){//raises + _insertBefore(this, newChild,oldChild, assertPreReplacementValidityInDocument); + if(oldChild){ + this.removeChild(oldChild); + } + }, + removeChild:function(oldChild){ + return _removeChild(this,oldChild); + }, + appendChild:function(newChild){ + return this.insertBefore(newChild,null); + }, + hasChildNodes:function(){ + return this.firstChild != null; + }, + cloneNode:function(deep){ + return cloneNode(this.ownerDocument||this,this,deep); + }, + // Modified in DOM Level 2: + normalize:function(){ + var child = this.firstChild; + while(child){ + var next = child.nextSibling; + if(next && next.nodeType == TEXT_NODE && child.nodeType == TEXT_NODE){ + this.removeChild(next); + child.appendData(next.data); + }else{ + child.normalize(); + child = next; + } + } + }, + // Introduced in DOM Level 2: + isSupported:function(feature, version){ + return this.ownerDocument.implementation.hasFeature(feature,version); + }, + // Introduced in DOM Level 2: + hasAttributes:function(){ + return this.attributes.length>0; + }, + /** + * Look up the prefix associated to the given namespace URI, starting from this node. + * **The default namespace declarations are ignored by this method.** + * See Namespace Prefix Lookup for details on the algorithm used by this method. + * + * _Note: The implementation seems to be incomplete when compared to the algorithm described in the specs._ + * + * @param {string | null} namespaceURI + * @returns {string | null} + * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#Node3-lookupNamespacePrefix + * @see https://www.w3.org/TR/DOM-Level-3-Core/namespaces-algorithms.html#lookupNamespacePrefixAlgo + * @see https://dom.spec.whatwg.org/#dom-node-lookupprefix + * @see https://github.com/xmldom/xmldom/issues/322 + */ + lookupPrefix:function(namespaceURI){ + var el = this; + while(el){ + var map = el._nsMap; + //console.dir(map) + if(map){ + for(var n in map){ + if (Object.prototype.hasOwnProperty.call(map, n) && map[n] === namespaceURI) { + return n; + } + } + } + el = el.nodeType == ATTRIBUTE_NODE?el.ownerDocument : el.parentNode; + } + return null; + }, + // Introduced in DOM Level 3: + lookupNamespaceURI:function(prefix){ + var el = this; + while(el){ + var map = el._nsMap; + //console.dir(map) + if(map){ + if(Object.prototype.hasOwnProperty.call(map, prefix)){ + return map[prefix] ; + } + } + el = el.nodeType == ATTRIBUTE_NODE?el.ownerDocument : el.parentNode; + } + return null; + }, + // Introduced in DOM Level 3: + isDefaultNamespace:function(namespaceURI){ + var prefix = this.lookupPrefix(namespaceURI); + return prefix == null; + } +}; - if (contentSteering) { - manifest.contentSteering = contentSteering; - } - if (type === 'dynamic') { - manifest.suggestedPresentationDelay = suggestedPresentationDelay; - } +function _xmlEncoder(c){ + return c == '<' && '<' || + c == '>' && '>' || + c == '&' && '&' || + c == '"' && '"' || + '&#'+c.charCodeAt()+';' +} - if (eventStream && eventStream.length > 0) { - manifest.eventStream = eventStream; - } - const isAudioOnly = manifest.playlists.length === 0; - const organizedAudioGroup = audioPlaylists.length ? organizeAudioPlaylists(audioPlaylists, sidxMapping, isAudioOnly) : null; - const organizedVttGroup = vttPlaylists.length ? organizeVttPlaylists(vttPlaylists, sidxMapping) : null; - const formattedPlaylists = videoPlaylists.concat(flattenMediaGroupPlaylists(organizedAudioGroup), flattenMediaGroupPlaylists(organizedVttGroup)); - const playlistTimelineStarts = formattedPlaylists.map(({ - timelineStarts - }) => timelineStarts); - manifest.timelineStarts = getUniqueTimelineStarts(playlistTimelineStarts); - addMediaSequenceValues(formattedPlaylists, manifest.timelineStarts); +copy(NodeType,Node); +copy(NodeType,Node.prototype); - if (organizedAudioGroup) { - manifest.mediaGroups.AUDIO.audio = organizedAudioGroup; - } +/** + * @param callback return true for continue,false for break + * @return boolean true: break visit; + */ +function _visitNode(node,callback){ + if(callback(node)){ + return true; + } + if(node = node.firstChild){ + do{ + if(_visitNode(node,callback)){return true} + }while(node=node.nextSibling) + } +} - if (organizedVttGroup) { - manifest.mediaGroups.SUBTITLES.subs = organizedVttGroup; - } - if (captions.length) { - manifest.mediaGroups['CLOSED-CAPTIONS'].cc = organizeCaptionServices(captions); - } - if (previousManifest) { - return positionManifestOnTimeline({ - oldManifest: previousManifest, - newManifest: manifest - }); - } +function Document(){ + this.ownerDocument = this; +} - return manifest; -}; +function _onAddAttribute(doc,el,newAttr){ + doc && doc._inc++; + var ns = newAttr.namespaceURI ; + if(ns === NAMESPACE.XMLNS){ + //update namespace + el._nsMap[newAttr.prefix?newAttr.localName:''] = newAttr.value + } +} + +function _onRemoveAttribute(doc,el,newAttr,remove){ + doc && doc._inc++; + var ns = newAttr.namespaceURI ; + if(ns === NAMESPACE.XMLNS){ + //update namespace + delete el._nsMap[newAttr.prefix?newAttr.localName:''] + } +} /** - * Calculates the R (repetition) value for a live stream (for the final segment - * in a manifest where the r value is negative 1) - * - * @param {Object} attributes - * Object containing all inherited attributes from parent elements with attribute - * names as keys - * @param {number} time - * current time (typically the total time up until the final segment) - * @param {number} duration - * duration property for the given + * Updates `el.childNodes`, updating the indexed items and it's `length`. + * Passing `newChild` means it will be appended. + * Otherwise it's assumed that an item has been removed, + * and `el.firstNode` and it's `.nextSibling` are used + * to walk the current list of child nodes. * - * @return {number} - * R value to reach the end of the given period + * @param {Document} doc + * @param {Node} el + * @param {Node} [newChild] + * @private */ -const getLiveRValue = (attributes, time, duration) => { - const { - NOW, - clientOffset, - availabilityStartTime, - timescale = 1, - periodStart = 0, - minimumUpdatePeriod = 0 - } = attributes; - const now = (NOW + clientOffset) / 1000; - const periodStartWC = availabilityStartTime + periodStart; - const periodEndWC = now + minimumUpdatePeriod; - const periodDuration = periodEndWC - periodStartWC; - return Math.ceil((periodDuration * timescale - time) / duration); -}; +function _onUpdateChild (doc, el, newChild) { + if(doc && doc._inc){ + doc._inc++; + //update childNodes + var cs = el.childNodes; + if (newChild) { + cs[cs.length++] = newChild; + } else { + var child = el.firstChild; + var i = 0; + while (child) { + cs[i++] = child; + child = child.nextSibling; + } + cs.length = i; + delete cs[cs.length]; + } + } +} + /** - * Uses information provided by SegmentTemplate.SegmentTimeline to determine segment - * timing and duration + * Removes the connections between `parentNode` and `child` + * and any existing `child.previousSibling` or `child.nextSibling`. * - * @param {Object} attributes - * Object containing all inherited attributes from parent elements with attribute - * names as keys - * @param {Object[]} segmentTimeline - * List of objects representing the attributes of each S element contained within + * @see https://github.com/xmldom/xmldom/issues/135 + * @see https://github.com/xmldom/xmldom/issues/145 * - * @return {{number: number, duration: number, time: number, timeline: number}[]} - * List of Objects with segment timing and duration info + * @param {Node} parentNode + * @param {Node} child + * @returns {Node} the child that was removed. + * @private */ +function _removeChild (parentNode, child) { + var previous = child.previousSibling; + var next = child.nextSibling; + if (previous) { + previous.nextSibling = next; + } else { + parentNode.firstChild = next; + } + if (next) { + next.previousSibling = previous; + } else { + parentNode.lastChild = previous; + } + child.parentNode = null; + child.previousSibling = null; + child.nextSibling = null; + _onUpdateChild(parentNode.ownerDocument, parentNode); + return child; +} +/** + * Returns `true` if `node` can be a parent for insertion. + * @param {Node} node + * @returns {boolean} + */ +function hasValidParentNodeType(node) { + return ( + node && + (node.nodeType === Node.DOCUMENT_NODE || node.nodeType === Node.DOCUMENT_FRAGMENT_NODE || node.nodeType === Node.ELEMENT_NODE) + ); +} -const parseByTimeline = (attributes, segmentTimeline) => { - const { - type, - minimumUpdatePeriod = 0, - media = '', - sourceDuration, - timescale = 1, - startNumber = 1, - periodStart: timeline - } = attributes; - const segments = []; - let time = -1; - - for (let sIndex = 0; sIndex < segmentTimeline.length; sIndex++) { - const S = segmentTimeline[sIndex]; - const duration = S.d; - const repeat = S.r || 0; - const segmentTime = S.t || 0; - - if (time < 0) { - // first segment - time = segmentTime; - } +/** + * Returns `true` if `node` can be inserted according to it's `nodeType`. + * @param {Node} node + * @returns {boolean} + */ +function hasInsertableNodeType(node) { + return ( + node && + (isElementNode(node) || + isTextNode(node) || + isDocTypeNode(node) || + node.nodeType === Node.DOCUMENT_FRAGMENT_NODE || + node.nodeType === Node.COMMENT_NODE || + node.nodeType === Node.PROCESSING_INSTRUCTION_NODE) + ); +} - if (segmentTime && segmentTime > time) { - // discontinuity - // TODO: How to handle this type of discontinuity - // timeline++ here would treat it like HLS discontuity and content would - // get appended without gap - // E.G. - // - // - // - // - // would have $Time$ values of [0, 1, 2, 5] - // should this be appened at time positions [0, 1, 2, 3],(#EXT-X-DISCONTINUITY) - // or [0, 1, 2, gap, gap, 5]? (#EXT-X-GAP) - // does the value of sourceDuration consider this when calculating arbitrary - // negative @r repeat value? - // E.G. Same elements as above with this added at the end - // - // with a sourceDuration of 10 - // Would the 2 gaps be included in the time duration calculations resulting in - // 8 segments with $Time$ values of [0, 1, 2, 5, 6, 7, 8, 9] or 10 segments - // with $Time$ values of [0, 1, 2, 5, 6, 7, 8, 9, 10, 11] ? - time = segmentTime; - } +/** + * Returns true if `node` is a DOCTYPE node + * @param {Node} node + * @returns {boolean} + */ +function isDocTypeNode(node) { + return node && node.nodeType === Node.DOCUMENT_TYPE_NODE; +} - let count; +/** + * Returns true if the node is an element + * @param {Node} node + * @returns {boolean} + */ +function isElementNode(node) { + return node && node.nodeType === Node.ELEMENT_NODE; +} +/** + * Returns true if `node` is a text node + * @param {Node} node + * @returns {boolean} + */ +function isTextNode(node) { + return node && node.nodeType === Node.TEXT_NODE; +} - if (repeat < 0) { - const nextS = sIndex + 1; - - if (nextS === segmentTimeline.length) { - // last segment - if (type === 'dynamic' && minimumUpdatePeriod > 0 && media.indexOf('$Number$') > 0) { - count = getLiveRValue(attributes, time, duration); - } else { - // TODO: This may be incorrect depending on conclusion of TODO above - count = (sourceDuration * timescale - time) / duration; - } - } else { - count = (segmentTimeline[nextS].t - time) / duration; - } - } else { - count = repeat + 1; - } - - const end = startNumber + segments.length + count; - let number = startNumber + segments.length; - - while (number < end) { - segments.push({ - number, - duration: duration / timescale, - time, - timeline - }); - time += duration; - number++; - } - } - - return segments; -}; - -const identifierPattern = /\$([A-z]*)(?:(%0)([0-9]+)d)?\$/g; /** - * Replaces template identifiers with corresponding values. To be used as the callback - * for String.prototype.replace + * Check if en element node can be inserted before `child`, or at the end if child is falsy, + * according to the presence and position of a doctype node on the same level. * - * @name replaceCallback - * @function - * @param {string} match - * Entire match of identifier - * @param {string} identifier - * Name of matched identifier - * @param {string} format - * Format tag string. Its presence indicates that padding is expected - * @param {string} width - * Desired length of the replaced value. Values less than this width shall be left - * zero padded - * @return {string} - * Replacement for the matched identifier + * @param {Document} doc The document node + * @param {Node} child the node that would become the nextSibling if the element would be inserted + * @returns {boolean} `true` if an element can be inserted before child + * @private + * https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity */ +function isElementInsertionPossible(doc, child) { + var parentChildNodes = doc.childNodes || []; + if (find(parentChildNodes, isElementNode) || isDocTypeNode(child)) { + return false; + } + var docTypeNode = find(parentChildNodes, isDocTypeNode); + return !(child && docTypeNode && parentChildNodes.indexOf(docTypeNode) > parentChildNodes.indexOf(child)); +} /** - * Returns a function to be used as a callback for String.prototype.replace to replace - * template identifiers + * Check if en element node can be inserted before `child`, or at the end if child is falsy, + * according to the presence and position of a doctype node on the same level. * - * @param {Obect} values - * Object containing values that shall be used to replace known identifiers - * @param {number} values.RepresentationID - * Value of the Representation@id attribute - * @param {number} values.Number - * Number of the corresponding segment - * @param {number} values.Bandwidth - * Value of the Representation@bandwidth attribute. - * @param {number} values.Time - * Timestamp value of the corresponding segment - * @return {replaceCallback} - * Callback to be used with String.prototype.replace to replace identifiers + * @param {Node} doc The document node + * @param {Node} child the node that would become the nextSibling if the element would be inserted + * @returns {boolean} `true` if an element can be inserted before child + * @private + * https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity */ +function isElementReplacementPossible(doc, child) { + var parentChildNodes = doc.childNodes || []; -const identifierReplacement = values => (match, identifier, format, width) => { - if (match === '$$') { - // escape sequence - return '$'; - } - - if (typeof values[identifier] === 'undefined') { - return match; - } - - const value = '' + values[identifier]; - - if (identifier === 'RepresentationID') { - // Format tag shall not be present with RepresentationID - return value; - } - - if (!format) { - width = 1; - } else { - width = parseInt(width, 10); - } + function hasElementChildThatIsNotChild(node) { + return isElementNode(node) && node !== child; + } - if (value.length >= width) { - return value; - } + if (find(parentChildNodes, hasElementChildThatIsNotChild)) { + return false; + } + var docTypeNode = find(parentChildNodes, isDocTypeNode); + return !(child && docTypeNode && parentChildNodes.indexOf(docTypeNode) > parentChildNodes.indexOf(child)); +} - return `${new Array(width - value.length + 1).join('0')}${value}`; -}; /** - * Constructs a segment url from a template string + * @private + * Steps 1-5 of the checks before inserting and before replacing a child are the same. * - * @param {string} url - * Template string to construct url from - * @param {Obect} values - * Object containing values that shall be used to replace known identifiers - * @param {number} values.RepresentationID - * Value of the Representation@id attribute - * @param {number} values.Number - * Number of the corresponding segment - * @param {number} values.Bandwidth - * Value of the Representation@bandwidth attribute. - * @param {number} values.Time - * Timestamp value of the corresponding segment - * @return {string} - * Segment url with identifiers replaced + * @param {Node} parent the parent node to insert `node` into + * @param {Node} node the node to insert + * @param {Node=} child the node that should become the `nextSibling` of `node` + * @returns {Node} + * @throws DOMException for several node combinations that would create a DOM that is not well-formed. + * @throws DOMException if `child` is provided but is not a child of `parent`. + * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity + * @see https://dom.spec.whatwg.org/#concept-node-replace */ +function assertPreInsertionValidity1to5(parent, node, child) { + // 1. If `parent` is not a Document, DocumentFragment, or Element node, then throw a "HierarchyRequestError" DOMException. + if (!hasValidParentNodeType(parent)) { + throw new DOMException(HIERARCHY_REQUEST_ERR, 'Unexpected parent node type ' + parent.nodeType); + } + // 2. If `node` is a host-including inclusive ancestor of `parent`, then throw a "HierarchyRequestError" DOMException. + // not implemented! + // 3. If `child` is non-null and its parent is not `parent`, then throw a "NotFoundError" DOMException. + if (child && child.parentNode !== parent) { + throw new DOMException(NOT_FOUND_ERR, 'child not in parent'); + } + if ( + // 4. If `node` is not a DocumentFragment, DocumentType, Element, or CharacterData node, then throw a "HierarchyRequestError" DOMException. + !hasInsertableNodeType(node) || + // 5. If either `node` is a Text node and `parent` is a document, + // the sax parser currently adds top level text nodes, this will be fixed in 0.9.0 + // || (node.nodeType === Node.TEXT_NODE && parent.nodeType === Node.DOCUMENT_NODE) + // or `node` is a doctype and `parent` is not a document, then throw a "HierarchyRequestError" DOMException. + (isDocTypeNode(node) && parent.nodeType !== Node.DOCUMENT_NODE) + ) { + throw new DOMException( + HIERARCHY_REQUEST_ERR, + 'Unexpected node type ' + node.nodeType + ' for parent node type ' + parent.nodeType + ); + } +} -const constructTemplateUrl = (url, values) => url.replace(identifierPattern, identifierReplacement(values)); /** - * Generates a list of objects containing timing and duration information about each - * segment needed to generate segment uris and the complete segment object + * @private + * Step 6 of the checks before inserting and before replacing a child are different. * - * @param {Object} attributes - * Object containing all inherited attributes from parent elements with attribute - * names as keys - * @param {Object[]|undefined} segmentTimeline - * List of objects representing the attributes of each S element contained within - * the SegmentTimeline element - * @return {{number: number, duration: number, time: number, timeline: number}[]} - * List of Objects with segment timing and duration info + * @param {Document} parent the parent node to insert `node` into + * @param {Node} node the node to insert + * @param {Node | undefined} child the node that should become the `nextSibling` of `node` + * @returns {Node} + * @throws DOMException for several node combinations that would create a DOM that is not well-formed. + * @throws DOMException if `child` is provided but is not a child of `parent`. + * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity + * @see https://dom.spec.whatwg.org/#concept-node-replace */ +function assertPreInsertionValidityInDocument(parent, node, child) { + var parentChildNodes = parent.childNodes || []; + var nodeChildNodes = node.childNodes || []; -const parseTemplateInfo = (attributes, segmentTimeline) => { - if (!attributes.duration && !segmentTimeline) { - // if neither @duration or SegmentTimeline are present, then there shall be exactly - // one media segment - return [{ - number: attributes.startNumber || 1, - duration: attributes.sourceDuration, - time: 0, - timeline: attributes.periodStart - }]; - } - - if (attributes.duration) { - return parseByDuration(attributes); - } + // DocumentFragment + if (node.nodeType === Node.DOCUMENT_FRAGMENT_NODE) { + var nodeChildElements = nodeChildNodes.filter(isElementNode); + // If node has more than one element child or has a Text node child. + if (nodeChildElements.length > 1 || find(nodeChildNodes, isTextNode)) { + throw new DOMException(HIERARCHY_REQUEST_ERR, 'More than one element or text in fragment'); + } + // Otherwise, if `node` has one element child and either `parent` has an element child, + // `child` is a doctype, or `child` is non-null and a doctype is following `child`. + if (nodeChildElements.length === 1 && !isElementInsertionPossible(parent, child)) { + throw new DOMException(HIERARCHY_REQUEST_ERR, 'Element in fragment can not be inserted before doctype'); + } + } + // Element + if (isElementNode(node)) { + // `parent` has an element child, `child` is a doctype, + // or `child` is non-null and a doctype is following `child`. + if (!isElementInsertionPossible(parent, child)) { + throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one element can be added and only after doctype'); + } + } + // DocumentType + if (isDocTypeNode(node)) { + // `parent` has a doctype child, + if (find(parentChildNodes, isDocTypeNode)) { + throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one doctype is allowed'); + } + var parentElementChild = find(parentChildNodes, isElementNode); + // `child` is non-null and an element is preceding `child`, + if (child && parentChildNodes.indexOf(parentElementChild) < parentChildNodes.indexOf(child)) { + throw new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can only be inserted before an element'); + } + // or `child` is null and `parent` has an element child. + if (!child && parentElementChild) { + throw new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can not be appended since element is present'); + } + } +} - return parseByTimeline(attributes, segmentTimeline); -}; /** - * Generates a list of segments using information provided by the SegmentTemplate element + * @private + * Step 6 of the checks before inserting and before replacing a child are different. * - * @param {Object} attributes - * Object containing all inherited attributes from parent elements with attribute - * names as keys - * @param {Object[]|undefined} segmentTimeline - * List of objects representing the attributes of each S element contained within - * the SegmentTimeline element - * @return {Object[]} - * List of segment objects + * @param {Document} parent the parent node to insert `node` into + * @param {Node} node the node to insert + * @param {Node | undefined} child the node that should become the `nextSibling` of `node` + * @returns {Node} + * @throws DOMException for several node combinations that would create a DOM that is not well-formed. + * @throws DOMException if `child` is provided but is not a child of `parent`. + * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity + * @see https://dom.spec.whatwg.org/#concept-node-replace */ +function assertPreReplacementValidityInDocument(parent, node, child) { + var parentChildNodes = parent.childNodes || []; + var nodeChildNodes = node.childNodes || []; -const segmentsFromTemplate = (attributes, segmentTimeline) => { - const templateValues = { - RepresentationID: attributes.id, - Bandwidth: attributes.bandwidth || 0 - }; - const { - initialization = { - sourceURL: '', - range: '' - } - } = attributes; - const mapSegment = urlTypeToSegment({ - baseUrl: attributes.baseUrl, - source: constructTemplateUrl(initialization.sourceURL, templateValues), - range: initialization.range - }); - const segments = parseTemplateInfo(attributes, segmentTimeline); - return segments.map(segment => { - templateValues.Number = segment.number; - templateValues.Time = segment.time; - const uri = constructTemplateUrl(attributes.media || '', templateValues); // See DASH spec section 5.3.9.2.2 - // - if timescale isn't present on any level, default to 1. - - const timescale = attributes.timescale || 1; // - if presentationTimeOffset isn't present on any level, default to 0 - - const presentationTimeOffset = attributes.presentationTimeOffset || 0; - const presentationTime = // Even if the @t attribute is not specified for the segment, segment.time is - // calculated in mpd-parser prior to this, so it's assumed to be available. - attributes.periodStart + (segment.time - presentationTimeOffset) / timescale; - const map = { - uri, - timeline: segment.timeline, - duration: segment.duration, - resolvedUri: (0,_videojs_vhs_utils_es_resolve_url__WEBPACK_IMPORTED_MODULE_0__["default"])(attributes.baseUrl || '', uri), - map: mapSegment, - number: segment.number, - presentationTime - }; - return map; - }); -}; + // DocumentFragment + if (node.nodeType === Node.DOCUMENT_FRAGMENT_NODE) { + var nodeChildElements = nodeChildNodes.filter(isElementNode); + // If `node` has more than one element child or has a Text node child. + if (nodeChildElements.length > 1 || find(nodeChildNodes, isTextNode)) { + throw new DOMException(HIERARCHY_REQUEST_ERR, 'More than one element or text in fragment'); + } + // Otherwise, if `node` has one element child and either `parent` has an element child that is not `child` or a doctype is following `child`. + if (nodeChildElements.length === 1 && !isElementReplacementPossible(parent, child)) { + throw new DOMException(HIERARCHY_REQUEST_ERR, 'Element in fragment can not be inserted before doctype'); + } + } + // Element + if (isElementNode(node)) { + // `parent` has an element child that is not `child` or a doctype is following `child`. + if (!isElementReplacementPossible(parent, child)) { + throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one element can be added and only after doctype'); + } + } + // DocumentType + if (isDocTypeNode(node)) { + function hasDoctypeChildThatIsNotChild(node) { + return isDocTypeNode(node) && node !== child; + } -/** - * Converts a (of type URLType from the DASH spec 5.3.9.2 Table 14) - * to an object that matches the output of a segment in videojs/mpd-parser - * - * @param {Object} attributes - * Object containing all inherited attributes from parent elements with attribute - * names as keys - * @param {Object} segmentUrl - * node to translate into a segment object - * @return {Object} translated segment object - */ + // `parent` has a doctype child that is not `child`, + if (find(parentChildNodes, hasDoctypeChildThatIsNotChild)) { + throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one doctype is allowed'); + } + var parentElementChild = find(parentChildNodes, isElementNode); + // or an element is preceding `child`. + if (child && parentChildNodes.indexOf(parentElementChild) < parentChildNodes.indexOf(child)) { + throw new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can only be inserted before an element'); + } + } +} -const SegmentURLToSegmentObject = (attributes, segmentUrl) => { - const { - baseUrl, - initialization = {} - } = attributes; - const initSegment = urlTypeToSegment({ - baseUrl, - source: initialization.sourceURL, - range: initialization.range - }); - const segment = urlTypeToSegment({ - baseUrl, - source: segmentUrl.media, - range: segmentUrl.mediaRange - }); - segment.map = initSegment; - return segment; -}; /** - * Generates a list of segments using information provided by the SegmentList element - * SegmentList (DASH SPEC Section 5.3.9.3.2) contains a set of nodes. Each - * node should be translated into segment. - * - * @param {Object} attributes - * Object containing all inherited attributes from parent elements with attribute - * names as keys - * @param {Object[]|undefined} segmentTimeline - * List of objects representing the attributes of each S element contained within - * the SegmentTimeline element - * @return {Object.} list of segments + * @private + * @param {Node} parent the parent node to insert `node` into + * @param {Node} node the node to insert + * @param {Node=} child the node that should become the `nextSibling` of `node` + * @returns {Node} + * @throws DOMException for several node combinations that would create a DOM that is not well-formed. + * @throws DOMException if `child` is provided but is not a child of `parent`. + * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity */ +function _insertBefore(parent, node, child, _inDocumentAssertion) { + // To ensure pre-insertion validity of a node into a parent before a child, run these steps: + assertPreInsertionValidity1to5(parent, node, child); + // If parent is a document, and any of the statements below, switched on the interface node implements, + // are true, then throw a "HierarchyRequestError" DOMException. + if (parent.nodeType === Node.DOCUMENT_NODE) { + (_inDocumentAssertion || assertPreInsertionValidityInDocument)(parent, node, child); + } -const segmentsFromList = (attributes, segmentTimeline) => { - const { - duration, - segmentUrls = [], - periodStart - } = attributes; // Per spec (5.3.9.2.1) no way to determine segment duration OR - // if both SegmentTimeline and @duration are defined, it is outside of spec. - - if (!duration && !segmentTimeline || duration && segmentTimeline) { - throw new Error(errors.SEGMENT_TIME_UNSPECIFIED); - } + var cp = node.parentNode; + if(cp){ + cp.removeChild(node);//remove and update + } + if(node.nodeType === DOCUMENT_FRAGMENT_NODE){ + var newFirst = node.firstChild; + if (newFirst == null) { + return node; + } + var newLast = node.lastChild; + }else{ + newFirst = newLast = node; + } + var pre = child ? child.previousSibling : parent.lastChild; - const segmentUrlMap = segmentUrls.map(segmentUrlObject => SegmentURLToSegmentObject(attributes, segmentUrlObject)); - let segmentTimeInfo; + newFirst.previousSibling = pre; + newLast.nextSibling = child; - if (duration) { - segmentTimeInfo = parseByDuration(attributes); - } - if (segmentTimeline) { - segmentTimeInfo = parseByTimeline(attributes, segmentTimeline); - } + if(pre){ + pre.nextSibling = newFirst; + }else{ + parent.firstChild = newFirst; + } + if(child == null){ + parent.lastChild = newLast; + }else{ + child.previousSibling = newLast; + } + do{ + newFirst.parentNode = parent; + }while(newFirst !== newLast && (newFirst= newFirst.nextSibling)) + _onUpdateChild(parent.ownerDocument||parent, parent); + //console.log(parent.lastChild.nextSibling == null) + if (node.nodeType == DOCUMENT_FRAGMENT_NODE) { + node.firstChild = node.lastChild = null; + } + return node; +} - const segments = segmentTimeInfo.map((segmentTime, index) => { - if (segmentUrlMap[index]) { - const segment = segmentUrlMap[index]; // See DASH spec section 5.3.9.2.2 - // - if timescale isn't present on any level, default to 1. +/** + * Appends `newChild` to `parentNode`. + * If `newChild` is already connected to a `parentNode` it is first removed from it. + * + * @see https://github.com/xmldom/xmldom/issues/135 + * @see https://github.com/xmldom/xmldom/issues/145 + * @param {Node} parentNode + * @param {Node} newChild + * @returns {Node} + * @private + */ +function _appendSingleChild (parentNode, newChild) { + if (newChild.parentNode) { + newChild.parentNode.removeChild(newChild); + } + newChild.parentNode = parentNode; + newChild.previousSibling = parentNode.lastChild; + newChild.nextSibling = null; + if (newChild.previousSibling) { + newChild.previousSibling.nextSibling = newChild; + } else { + parentNode.firstChild = newChild; + } + parentNode.lastChild = newChild; + _onUpdateChild(parentNode.ownerDocument, parentNode, newChild); + return newChild; +} - const timescale = attributes.timescale || 1; // - if presentationTimeOffset isn't present on any level, default to 0 +Document.prototype = { + //implementation : null, + nodeName : '#document', + nodeType : DOCUMENT_NODE, + /** + * The DocumentType node of the document. + * + * @readonly + * @type DocumentType + */ + doctype : null, + documentElement : null, + _inc : 1, - const presentationTimeOffset = attributes.presentationTimeOffset || 0; - segment.timeline = segmentTime.timeline; - segment.duration = segmentTime.duration; - segment.number = segmentTime.number; - segment.presentationTime = periodStart + (segmentTime.time - presentationTimeOffset) / timescale; - return segment; - } // Since we're mapping we should get rid of any blank segments (in case - // the given SegmentTimeline is handling for more elements than we have - // SegmentURLs for). - - }).filter(segment => segment); - return segments; -}; + insertBefore : function(newChild, refChild){//raises + if(newChild.nodeType == DOCUMENT_FRAGMENT_NODE){ + var child = newChild.firstChild; + while(child){ + var next = child.nextSibling; + this.insertBefore(child,refChild); + child = next; + } + return newChild; + } + _insertBefore(this, newChild, refChild); + newChild.ownerDocument = this; + if (this.documentElement === null && newChild.nodeType === ELEMENT_NODE) { + this.documentElement = newChild; + } -const generateSegments = ({ - attributes, - segmentInfo -}) => { - let segmentAttributes; - let segmentsFn; + return newChild; + }, + removeChild : function(oldChild){ + if(this.documentElement == oldChild){ + this.documentElement = null; + } + return _removeChild(this,oldChild); + }, + replaceChild: function (newChild, oldChild) { + //raises + _insertBefore(this, newChild, oldChild, assertPreReplacementValidityInDocument); + newChild.ownerDocument = this; + if (oldChild) { + this.removeChild(oldChild); + } + if (isElementNode(newChild)) { + this.documentElement = newChild; + } + }, + // Introduced in DOM Level 2: + importNode : function(importedNode,deep){ + return importNode(this,importedNode,deep); + }, + // Introduced in DOM Level 2: + getElementById : function(id){ + var rtv = null; + _visitNode(this.documentElement,function(node){ + if(node.nodeType == ELEMENT_NODE){ + if(node.getAttribute('id') == id){ + rtv = node; + return true; + } + } + }) + return rtv; + }, - if (segmentInfo.template) { - segmentsFn = segmentsFromTemplate; - segmentAttributes = merge(attributes, segmentInfo.template); - } else if (segmentInfo.base) { - segmentsFn = segmentsFromBase; - segmentAttributes = merge(attributes, segmentInfo.base); - } else if (segmentInfo.list) { - segmentsFn = segmentsFromList; - segmentAttributes = merge(attributes, segmentInfo.list); - } + /** + * The `getElementsByClassName` method of `Document` interface returns an array-like object + * of all child elements which have **all** of the given class name(s). + * + * Returns an empty list if `classeNames` is an empty string or only contains HTML white space characters. + * + * + * Warning: This is a live LiveNodeList. + * Changes in the DOM will reflect in the array as the changes occur. + * If an element selected by this array no longer qualifies for the selector, + * it will automatically be removed. Be aware of this for iteration purposes. + * + * @param {string} classNames is a string representing the class name(s) to match; multiple class names are separated by (ASCII-)whitespace + * + * @see https://developer.mozilla.org/en-US/docs/Web/API/Document/getElementsByClassName + * @see https://dom.spec.whatwg.org/#concept-getelementsbyclassname + */ + getElementsByClassName: function(classNames) { + var classNamesSet = toOrderedSet(classNames) + return new LiveNodeList(this, function(base) { + var ls = []; + if (classNamesSet.length > 0) { + _visitNode(base.documentElement, function(node) { + if(node !== base && node.nodeType === ELEMENT_NODE) { + var nodeClassNames = node.getAttribute('class') + // can be null if the attribute does not exist + if (nodeClassNames) { + // before splitting and iterating just compare them for the most common case + var matches = classNames === nodeClassNames; + if (!matches) { + var nodeClassNamesSet = toOrderedSet(nodeClassNames) + matches = classNamesSet.every(arrayIncludes(nodeClassNamesSet)) + } + if(matches) { + ls.push(node); + } + } + } + }); + } + return ls; + }); + }, - const segmentsInfo = { - attributes - }; + //document factory method: + createElement : function(tagName){ + var node = new Element(); + node.ownerDocument = this; + node.nodeName = tagName; + node.tagName = tagName; + node.localName = tagName; + node.childNodes = new NodeList(); + var attrs = node.attributes = new NamedNodeMap(); + attrs._ownerElement = node; + return node; + }, + createDocumentFragment : function(){ + var node = new DocumentFragment(); + node.ownerDocument = this; + node.childNodes = new NodeList(); + return node; + }, + createTextNode : function(data){ + var node = new Text(); + node.ownerDocument = this; + node.appendData(data) + return node; + }, + createComment : function(data){ + var node = new Comment(); + node.ownerDocument = this; + node.appendData(data) + return node; + }, + createCDATASection : function(data){ + var node = new CDATASection(); + node.ownerDocument = this; + node.appendData(data) + return node; + }, + createProcessingInstruction : function(target,data){ + var node = new ProcessingInstruction(); + node.ownerDocument = this; + node.tagName = node.nodeName = node.target = target; + node.nodeValue = node.data = data; + return node; + }, + createAttribute : function(name){ + var node = new Attr(); + node.ownerDocument = this; + node.name = name; + node.nodeName = name; + node.localName = name; + node.specified = true; + return node; + }, + createEntityReference : function(name){ + var node = new EntityReference(); + node.ownerDocument = this; + node.nodeName = name; + return node; + }, + // Introduced in DOM Level 2: + createElementNS : function(namespaceURI,qualifiedName){ + var node = new Element(); + var pl = qualifiedName.split(':'); + var attrs = node.attributes = new NamedNodeMap(); + node.childNodes = new NodeList(); + node.ownerDocument = this; + node.nodeName = qualifiedName; + node.tagName = qualifiedName; + node.namespaceURI = namespaceURI; + if(pl.length == 2){ + node.prefix = pl[0]; + node.localName = pl[1]; + }else{ + //el.prefix = null; + node.localName = qualifiedName; + } + attrs._ownerElement = node; + return node; + }, + // Introduced in DOM Level 2: + createAttributeNS : function(namespaceURI,qualifiedName){ + var node = new Attr(); + var pl = qualifiedName.split(':'); + node.ownerDocument = this; + node.nodeName = qualifiedName; + node.name = qualifiedName; + node.namespaceURI = namespaceURI; + node.specified = true; + if(pl.length == 2){ + node.prefix = pl[0]; + node.localName = pl[1]; + }else{ + //el.prefix = null; + node.localName = qualifiedName; + } + return node; + } +}; +_extends(Document,Node); - if (!segmentsFn) { - return segmentsInfo; - } - const segments = segmentsFn(segmentAttributes, segmentInfo.segmentTimeline); // The @duration attribute will be used to determin the playlist's targetDuration which - // must be in seconds. Since we've generated the segment list, we no longer need - // @duration to be in @timescale units, so we can convert it here. +function Element() { + this._nsMap = {}; +}; +Element.prototype = { + nodeType : ELEMENT_NODE, + hasAttribute : function(name){ + return this.getAttributeNode(name)!=null; + }, + getAttribute : function(name){ + var attr = this.getAttributeNode(name); + return attr && attr.value || ''; + }, + getAttributeNode : function(name){ + return this.attributes.getNamedItem(name); + }, + setAttribute : function(name, value){ + var attr = this.ownerDocument.createAttribute(name); + attr.value = attr.nodeValue = "" + value; + this.setAttributeNode(attr) + }, + removeAttribute : function(name){ + var attr = this.getAttributeNode(name) + attr && this.removeAttributeNode(attr); + }, - if (segmentAttributes.duration) { - const { - duration, - timescale = 1 - } = segmentAttributes; - segmentAttributes.duration = duration / timescale; - } else if (segments.length) { - // if there is no @duration attribute, use the largest segment duration as - // as target duration - segmentAttributes.duration = segments.reduce((max, segment) => { - return Math.max(max, Math.ceil(segment.duration)); - }, 0); - } else { - segmentAttributes.duration = 0; - } + //four real opeartion method + appendChild:function(newChild){ + if(newChild.nodeType === DOCUMENT_FRAGMENT_NODE){ + return this.insertBefore(newChild,null); + }else{ + return _appendSingleChild(this,newChild); + } + }, + setAttributeNode : function(newAttr){ + return this.attributes.setNamedItem(newAttr); + }, + setAttributeNodeNS : function(newAttr){ + return this.attributes.setNamedItemNS(newAttr); + }, + removeAttributeNode : function(oldAttr){ + //console.log(this == oldAttr.ownerElement) + return this.attributes.removeNamedItem(oldAttr.nodeName); + }, + //get real attribute name,and remove it by removeAttributeNode + removeAttributeNS : function(namespaceURI, localName){ + var old = this.getAttributeNodeNS(namespaceURI, localName); + old && this.removeAttributeNode(old); + }, - segmentsInfo.attributes = segmentAttributes; - segmentsInfo.segments = segments; // This is a sidx box without actual segment information + hasAttributeNS : function(namespaceURI, localName){ + return this.getAttributeNodeNS(namespaceURI, localName)!=null; + }, + getAttributeNS : function(namespaceURI, localName){ + var attr = this.getAttributeNodeNS(namespaceURI, localName); + return attr && attr.value || ''; + }, + setAttributeNS : function(namespaceURI, qualifiedName, value){ + var attr = this.ownerDocument.createAttributeNS(namespaceURI, qualifiedName); + attr.value = attr.nodeValue = "" + value; + this.setAttributeNode(attr) + }, + getAttributeNodeNS : function(namespaceURI, localName){ + return this.attributes.getNamedItemNS(namespaceURI, localName); + }, - if (segmentInfo.base && segmentAttributes.indexRange) { - segmentsInfo.sidx = segments[0]; - segmentsInfo.segments = []; - } + getElementsByTagName : function(tagName){ + return new LiveNodeList(this,function(base){ + var ls = []; + _visitNode(base,function(node){ + if(node !== base && node.nodeType == ELEMENT_NODE && (tagName === '*' || node.tagName == tagName)){ + ls.push(node); + } + }); + return ls; + }); + }, + getElementsByTagNameNS : function(namespaceURI, localName){ + return new LiveNodeList(this,function(base){ + var ls = []; + _visitNode(base,function(node){ + if(node !== base && node.nodeType === ELEMENT_NODE && (namespaceURI === '*' || node.namespaceURI === namespaceURI) && (localName === '*' || node.localName == localName)){ + ls.push(node); + } + }); + return ls; - return segmentsInfo; + }); + } }; -const toPlaylists = representations => representations.map(generateSegments); +Document.prototype.getElementsByTagName = Element.prototype.getElementsByTagName; +Document.prototype.getElementsByTagNameNS = Element.prototype.getElementsByTagNameNS; -const findChildren = (element, name) => from(element.childNodes).filter(({ - tagName -}) => tagName === name); -const getContent = element => element.textContent.trim(); -/** - * Converts the provided string that may contain a division operation to a number. - * - * @param {string} value - the provided string value - * - * @return {number} the parsed string value - */ -const parseDivisionValue = value => { - return parseFloat(value.split('/').reduce((prev, current) => prev / current)); +_extends(Element,Node); +function Attr() { }; +Attr.prototype.nodeType = ATTRIBUTE_NODE; +_extends(Attr,Node); -const parseDuration = str => { - const SECONDS_IN_YEAR = 365 * 24 * 60 * 60; - const SECONDS_IN_MONTH = 30 * 24 * 60 * 60; - const SECONDS_IN_DAY = 24 * 60 * 60; - const SECONDS_IN_HOUR = 60 * 60; - const SECONDS_IN_MIN = 60; // P10Y10M10DT10H10M10.1S - const durationRegex = /P(?:(\d*)Y)?(?:(\d*)M)?(?:(\d*)D)?(?:T(?:(\d*)H)?(?:(\d*)M)?(?:([\d.]*)S)?)?/; - const match = durationRegex.exec(str); +function CharacterData() { +}; +CharacterData.prototype = { + data : '', + substringData : function(offset, count) { + return this.data.substring(offset, offset+count); + }, + appendData: function(text) { + text = this.data+text; + this.nodeValue = this.data = text; + this.length = text.length; + }, + insertData: function(offset,text) { + this.replaceData(offset,0,text); - if (!match) { - return 0; - } + }, + appendChild:function(newChild){ + throw new Error(ExceptionMessage[HIERARCHY_REQUEST_ERR]) + }, + deleteData: function(offset, count) { + this.replaceData(offset,count,""); + }, + replaceData: function(offset, count, text) { + var start = this.data.substring(0,offset); + var end = this.data.substring(offset+count); + text = start + text + end; + this.nodeValue = this.data = text; + this.length = text.length; + } +} +_extends(CharacterData,Node); +function Text() { +}; +Text.prototype = { + nodeName : "#text", + nodeType : TEXT_NODE, + splitText : function(offset) { + var text = this.data; + var newText = text.substring(offset); + text = text.substring(0, offset); + this.data = this.nodeValue = text; + this.length = text.length; + var newNode = this.ownerDocument.createTextNode(newText); + if(this.parentNode){ + this.parentNode.insertBefore(newNode, this.nextSibling); + } + return newNode; + } +} +_extends(Text,CharacterData); +function Comment() { +}; +Comment.prototype = { + nodeName : "#comment", + nodeType : COMMENT_NODE +} +_extends(Comment,CharacterData); - const [year, month, day, hour, minute, second] = match.slice(1); - return parseFloat(year || 0) * SECONDS_IN_YEAR + parseFloat(month || 0) * SECONDS_IN_MONTH + parseFloat(day || 0) * SECONDS_IN_DAY + parseFloat(hour || 0) * SECONDS_IN_HOUR + parseFloat(minute || 0) * SECONDS_IN_MIN + parseFloat(second || 0); +function CDATASection() { }; -const parseDate = str => { - // Date format without timezone according to ISO 8601 - // YYY-MM-DDThh:mm:ss.ssssss - const dateRegex = /^\d+-\d+-\d+T\d+:\d+:\d+(\.\d+)?$/; // If the date string does not specifiy a timezone, we must specifiy UTC. This is - // expressed by ending with 'Z' +CDATASection.prototype = { + nodeName : "#cdata-section", + nodeType : CDATA_SECTION_NODE +} +_extends(CDATASection,CharacterData); - if (dateRegex.test(str)) { - str += 'Z'; - } - return Date.parse(str); +function DocumentType() { }; +DocumentType.prototype.nodeType = DOCUMENT_TYPE_NODE; +_extends(DocumentType,Node); -const parsers = { - /** - * Specifies the duration of the entire Media Presentation. Format is a duration string - * as specified in ISO 8601 - * - * @param {string} value - * value of attribute as a string - * @return {number} - * The duration in seconds - */ - mediaPresentationDuration(value) { - return parseDuration(value); - }, +function Notation() { +}; +Notation.prototype.nodeType = NOTATION_NODE; +_extends(Notation,Node); - /** - * Specifies the Segment availability start time for all Segments referred to in this - * MPD. For a dynamic manifest, it specifies the anchor for the earliest availability - * time. Format is a date string as specified in ISO 8601 - * - * @param {string} value - * value of attribute as a string - * @return {number} - * The date as seconds from unix epoch - */ - availabilityStartTime(value) { - return parseDate(value) / 1000; - }, +function Entity() { +}; +Entity.prototype.nodeType = ENTITY_NODE; +_extends(Entity,Node); - /** - * Specifies the smallest period between potential changes to the MPD. Format is a - * duration string as specified in ISO 8601 - * - * @param {string} value - * value of attribute as a string - * @return {number} - * The duration in seconds - */ - minimumUpdatePeriod(value) { - return parseDuration(value); - }, +function EntityReference() { +}; +EntityReference.prototype.nodeType = ENTITY_REFERENCE_NODE; +_extends(EntityReference,Node); - /** - * Specifies the suggested presentation delay. Format is a - * duration string as specified in ISO 8601 - * - * @param {string} value - * value of attribute as a string - * @return {number} - * The duration in seconds - */ - suggestedPresentationDelay(value) { - return parseDuration(value); - }, +function DocumentFragment() { +}; +DocumentFragment.prototype.nodeName = "#document-fragment"; +DocumentFragment.prototype.nodeType = DOCUMENT_FRAGMENT_NODE; +_extends(DocumentFragment,Node); - /** - * specifices the type of mpd. Can be either "static" or "dynamic" - * - * @param {string} value - * value of attribute as a string - * - * @return {string} - * The type as a string - */ - type(value) { - return value; - }, - - /** - * Specifies the duration of the smallest time shifting buffer for any Representation - * in the MPD. Format is a duration string as specified in ISO 8601 - * - * @param {string} value - * value of attribute as a string - * @return {number} - * The duration in seconds - */ - timeShiftBufferDepth(value) { - return parseDuration(value); - }, - - /** - * Specifies the PeriodStart time of the Period relative to the availabilityStarttime. - * Format is a duration string as specified in ISO 8601 - * - * @param {string} value - * value of attribute as a string - * @return {number} - * The duration in seconds - */ - start(value) { - return parseDuration(value); - }, - - /** - * Specifies the width of the visual presentation - * - * @param {string} value - * value of attribute as a string - * @return {number} - * The parsed width - */ - width(value) { - return parseInt(value, 10); - }, - - /** - * Specifies the height of the visual presentation - * - * @param {string} value - * value of attribute as a string - * @return {number} - * The parsed height - */ - height(value) { - return parseInt(value, 10); - }, - - /** - * Specifies the bitrate of the representation - * - * @param {string} value - * value of attribute as a string - * @return {number} - * The parsed bandwidth - */ - bandwidth(value) { - return parseInt(value, 10); - }, - - /** - * Specifies the frame rate of the representation - * - * @param {string} value - * value of attribute as a string - * @return {number} - * The parsed frame rate - */ - frameRate(value) { - return parseDivisionValue(value); - }, - - /** - * Specifies the number of the first Media Segment in this Representation in the Period - * - * @param {string} value - * value of attribute as a string - * @return {number} - * The parsed number - */ - startNumber(value) { - return parseInt(value, 10); - }, - - /** - * Specifies the timescale in units per seconds - * - * @param {string} value - * value of attribute as a string - * @return {number} - * The parsed timescale - */ - timescale(value) { - return parseInt(value, 10); - }, - - /** - * Specifies the presentationTimeOffset. - * - * @param {string} value - * value of the attribute as a string - * - * @return {number} - * The parsed presentationTimeOffset - */ - presentationTimeOffset(value) { - return parseInt(value, 10); - }, - - /** - * Specifies the constant approximate Segment duration - * NOTE: The element also contains an @duration attribute. This duration - * specifies the duration of the Period. This attribute is currently not - * supported by the rest of the parser, however we still check for it to prevent - * errors. - * - * @param {string} value - * value of attribute as a string - * @return {number} - * The parsed duration - */ - duration(value) { - const parsedValue = parseInt(value, 10); - - if (isNaN(parsedValue)) { - return parseDuration(value); - } - - return parsedValue; - }, - - /** - * Specifies the Segment duration, in units of the value of the @timescale. - * - * @param {string} value - * value of attribute as a string - * @return {number} - * The parsed duration - */ - d(value) { - return parseInt(value, 10); - }, - - /** - * Specifies the MPD start time, in @timescale units, the first Segment in the series - * starts relative to the beginning of the Period - * - * @param {string} value - * value of attribute as a string - * @return {number} - * The parsed time - */ - t(value) { - return parseInt(value, 10); - }, - - /** - * Specifies the repeat count of the number of following contiguous Segments with the - * same duration expressed by the value of @d - * - * @param {string} value - * value of attribute as a string - * @return {number} - * The parsed number - */ - r(value) { - return parseInt(value, 10); - }, - - /** - * Specifies the presentationTime. - * - * @param {string} value - * value of the attribute as a string - * - * @return {number} - * The parsed presentationTime - */ - presentationTime(value) { - return parseInt(value, 10); - }, - - /** - * Default parser for all other attributes. Acts as a no-op and just returns the value - * as a string - * - * @param {string} value - * value of attribute as a string - * @return {string} - * Unparsed value - */ - DEFAULT(value) { - return value; - } -}; -/** - * Gets all the attributes and values of the provided node, parses attributes with known - * types, and returns an object with attribute names mapped to values. - * - * @param {Node} el - * The node to parse attributes from - * @return {Object} - * Object with all attributes of el parsed - */ +function ProcessingInstruction() { +} +ProcessingInstruction.prototype.nodeType = PROCESSING_INSTRUCTION_NODE; +_extends(ProcessingInstruction,Node); +function XMLSerializer(){} +XMLSerializer.prototype.serializeToString = function(node,isHtml,nodeFilter){ + return nodeSerializeToString.call(node,isHtml,nodeFilter); +} +Node.prototype.toString = nodeSerializeToString; +function nodeSerializeToString(isHtml,nodeFilter){ + var buf = []; + var refNode = this.nodeType == 9 && this.documentElement || this; + var prefix = refNode.prefix; + var uri = refNode.namespaceURI; -const parseAttributes = el => { - if (!(el && el.attributes)) { - return {}; - } + if(uri && prefix == null){ + //console.log(prefix) + var prefix = refNode.lookupPrefix(uri); + if(prefix == null){ + //isHTML = true; + var visibleNamespaces=[ + {namespace:uri,prefix:null} + //{namespace:uri,prefix:''} + ] + } + } + serializeToString(this,buf,isHtml,nodeFilter,visibleNamespaces); + //console.log('###',this.nodeType,uri,prefix,buf.join('')) + return buf.join(''); +} - return from(el.attributes).reduce((a, e) => { - const parseFn = parsers[e.name] || parsers.DEFAULT; - a[e.name] = parseFn(e.value); - return a; - }, {}); -}; +function needNamespaceDefine(node, isHTML, visibleNamespaces) { + var prefix = node.prefix || ''; + var uri = node.namespaceURI; + // According to [Namespaces in XML 1.0](https://www.w3.org/TR/REC-xml-names/#ns-using) , + // and more specifically https://www.w3.org/TR/REC-xml-names/#nsc-NoPrefixUndecl : + // > In a namespace declaration for a prefix [...], the attribute value MUST NOT be empty. + // in a similar manner [Namespaces in XML 1.1](https://www.w3.org/TR/xml-names11/#ns-using) + // and more specifically https://www.w3.org/TR/xml-names11/#nsc-NSDeclared : + // > [...] Furthermore, the attribute value [...] must not be an empty string. + // so serializing empty namespace value like xmlns:ds="" would produce an invalid XML document. + if (!uri) { + return false; + } + if (prefix === "xml" && uri === NAMESPACE.XML || uri === NAMESPACE.XMLNS) { + return false; + } -const keySystemsMap = { - 'urn:uuid:1077efec-c0b2-4d02-ace3-3c1e52e2fb4b': 'org.w3.clearkey', - 'urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed': 'com.widevine.alpha', - 'urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95': 'com.microsoft.playready', - 'urn:uuid:f239e769-efa3-4850-9c16-a903c6932efb': 'com.adobe.primetime' -}; + var i = visibleNamespaces.length + while (i--) { + var ns = visibleNamespaces[i]; + // get namespace prefix + if (ns.prefix === prefix) { + return ns.namespace !== uri; + } + } + return true; +} /** - * Builds a list of urls that is the product of the reference urls and BaseURL values + * Well-formed constraint: No < in Attribute Values + * > The replacement text of any entity referred to directly or indirectly + * > in an attribute value must not contain a <. + * @see https://www.w3.org/TR/xml11/#CleanAttrVals + * @see https://www.w3.org/TR/xml11/#NT-AttValue * - * @param {Object[]} references - * List of objects containing the reference URL as well as its attributes - * @param {Node[]} baseUrlElements - * List of BaseURL nodes from the mpd - * @return {Object[]} - * List of objects with resolved urls and attributes + * Literal whitespace other than space that appear in attribute values + * are serialized as their entity references, so they will be preserved. + * (In contrast to whitespace literals in the input which are normalized to spaces) + * @see https://www.w3.org/TR/xml11/#AVNormalize + * @see https://w3c.github.io/DOM-Parsing/#serializing-an-element-s-attributes */ +function addSerializedAttribute(buf, qualifiedName, value) { + buf.push(' ', qualifiedName, '="', value.replace(/[<>&"\t\n\r]/g, _xmlEncoder), '"') +} -const buildBaseUrls = (references, baseUrlElements) => { - if (!baseUrlElements.length) { - return references; - } - - return flatten(references.map(function (reference) { - return baseUrlElements.map(function (baseUrlElement) { - const initialBaseUrl = getContent(baseUrlElement); - const resolvedBaseUrl = (0,_videojs_vhs_utils_es_resolve_url__WEBPACK_IMPORTED_MODULE_0__["default"])(reference.baseUrl, initialBaseUrl); - const finalBaseUrl = merge(parseAttributes(baseUrlElement), { - baseUrl: resolvedBaseUrl - }); // If the URL is resolved, we want to get the serviceLocation from the reference - // assuming there is no serviceLocation on the initialBaseUrl - - if (resolvedBaseUrl !== initialBaseUrl && !finalBaseUrl.serviceLocation && reference.serviceLocation) { - finalBaseUrl.serviceLocation = reference.serviceLocation; - } +function serializeToString(node,buf,isHTML,nodeFilter,visibleNamespaces){ + if (!visibleNamespaces) { + visibleNamespaces = []; + } - return finalBaseUrl; - }); - })); -}; -/** - * Contains all Segment information for its containing AdaptationSet - * - * @typedef {Object} SegmentInformation - * @property {Object|undefined} template - * Contains the attributes for the SegmentTemplate node - * @property {Object[]|undefined} segmentTimeline - * Contains a list of atrributes for each S node within the SegmentTimeline node - * @property {Object|undefined} list - * Contains the attributes for the SegmentList node - * @property {Object|undefined} base - * Contains the attributes for the SegmentBase node - */ + if(nodeFilter){ + node = nodeFilter(node); + if(node){ + if(typeof node == 'string'){ + buf.push(node); + return; + } + }else{ + return; + } + //buf.sort.apply(attrs, attributeSorter); + } -/** - * Returns all available Segment information contained within the AdaptationSet node - * - * @param {Node} adaptationSet - * The AdaptationSet node to get Segment information from - * @return {SegmentInformation} - * The Segment information contained within the provided AdaptationSet - */ + switch(node.nodeType){ + case ELEMENT_NODE: + var attrs = node.attributes; + var len = attrs.length; + var child = node.firstChild; + var nodeName = node.tagName; -const getSegmentInformation = adaptationSet => { - const segmentTemplate = findChildren(adaptationSet, 'SegmentTemplate')[0]; - const segmentList = findChildren(adaptationSet, 'SegmentList')[0]; - const segmentUrls = segmentList && findChildren(segmentList, 'SegmentURL').map(s => merge({ - tag: 'SegmentURL' - }, parseAttributes(s))); - const segmentBase = findChildren(adaptationSet, 'SegmentBase')[0]; - const segmentTimelineParentNode = segmentList || segmentTemplate; - const segmentTimeline = segmentTimelineParentNode && findChildren(segmentTimelineParentNode, 'SegmentTimeline')[0]; - const segmentInitializationParentNode = segmentList || segmentBase || segmentTemplate; - const segmentInitialization = segmentInitializationParentNode && findChildren(segmentInitializationParentNode, 'Initialization')[0]; // SegmentTemplate is handled slightly differently, since it can have both - // @initialization and an node. @initialization can be templated, - // while the node can have a url and range specified. If the has - // both @initialization and an subelement we opt to override with - // the node, as this interaction is not defined in the spec. + isHTML = NAMESPACE.isHTML(node.namespaceURI) || isHTML - const template = segmentTemplate && parseAttributes(segmentTemplate); + var prefixedNodeName = nodeName + if (!isHTML && !node.prefix && node.namespaceURI) { + var defaultNS + // lookup current default ns from `xmlns` attribute + for (var ai = 0; ai < attrs.length; ai++) { + if (attrs.item(ai).name === 'xmlns') { + defaultNS = attrs.item(ai).value + break + } + } + if (!defaultNS) { + // lookup current default ns in visibleNamespaces + for (var nsi = visibleNamespaces.length - 1; nsi >= 0; nsi--) { + var namespace = visibleNamespaces[nsi] + if (namespace.prefix === '' && namespace.namespace === node.namespaceURI) { + defaultNS = namespace.namespace + break + } + } + } + if (defaultNS !== node.namespaceURI) { + for (var nsi = visibleNamespaces.length - 1; nsi >= 0; nsi--) { + var namespace = visibleNamespaces[nsi] + if (namespace.namespace === node.namespaceURI) { + if (namespace.prefix) { + prefixedNodeName = namespace.prefix + ':' + nodeName + } + break + } + } + } + } - if (template && segmentInitialization) { - template.initialization = segmentInitialization && parseAttributes(segmentInitialization); - } else if (template && template.initialization) { - // If it is @initialization we convert it to an object since this is the format that - // later functions will rely on for the initialization segment. This is only valid - // for - template.initialization = { - sourceURL: template.initialization - }; - } + buf.push('<', prefixedNodeName); - const segmentInfo = { - template, - segmentTimeline: segmentTimeline && findChildren(segmentTimeline, 'S').map(s => parseAttributes(s)), - list: segmentList && merge(parseAttributes(segmentList), { - segmentUrls, - initialization: parseAttributes(segmentInitialization) - }), - base: segmentBase && merge(parseAttributes(segmentBase), { - initialization: parseAttributes(segmentInitialization) - }) - }; - Object.keys(segmentInfo).forEach(key => { - if (!segmentInfo[key]) { - delete segmentInfo[key]; - } - }); - return segmentInfo; -}; -/** - * Contains Segment information and attributes needed to construct a Playlist object - * from a Representation - * - * @typedef {Object} RepresentationInformation - * @property {SegmentInformation} segmentInfo - * Segment information for this Representation - * @property {Object} attributes - * Inherited attributes for this Representation - */ + for(var i=0;i representation => { - const repBaseUrlElements = findChildren(representation, 'BaseURL'); - const repBaseUrls = buildBaseUrls(adaptationSetBaseUrls, repBaseUrlElements); - const attributes = merge(adaptationSetAttributes, parseAttributes(representation)); - const representationSegmentInfo = getSegmentInformation(representation); - return repBaseUrls.map(baseUrl => { - return { - segmentInfo: merge(adaptationSetSegmentInfo, representationSegmentInfo), - attributes: merge(attributes, baseUrl) - }; - }); -}; -/** - * Tranforms a series of content protection nodes to - * an object containing pssh data by key system - * - * @param {Node[]} contentProtectionNodes - * Content protection nodes - * @return {Object} - * Object containing pssh data by key system - */ - -const generateKeySystemInformation = contentProtectionNodes => { - return contentProtectionNodes.reduce((acc, node) => { - const attributes = parseAttributes(node); // Although it could be argued that according to the UUID RFC spec the UUID string (a-f chars) should be generated - // as a lowercase string it also mentions it should be treated as case-insensitive on input. Since the key system - // UUIDs in the keySystemsMap are hardcoded as lowercase in the codebase there isn't any reason not to do - // .toLowerCase() on the input UUID string from the manifest (at least I could not think of one). - - if (attributes.schemeIdUri) { - attributes.schemeIdUri = attributes.schemeIdUri.toLowerCase(); - } - - const keySystem = keySystemsMap[attributes.schemeIdUri]; - - if (keySystem) { - acc[keySystem] = { - attributes - }; - const psshNode = findChildren(node, 'cenc:pssh')[0]; - - if (psshNode) { - const pssh = getContent(psshNode); - acc[keySystem].pssh = pssh && (0,_videojs_vhs_utils_es_decode_b64_to_uint8_array__WEBPACK_IMPORTED_MODULE_3__["default"])(pssh); - } - } - - return acc; - }, {}); -}; // defined in ANSI_SCTE 214-1 2016 - - -const parseCaptionServiceMetadata = service => { - // 608 captions - if (service.schemeIdUri === 'urn:scte:dash:cc:cea-608:2015') { - const values = typeof service.value !== 'string' ? [] : service.value.split(';'); - return values.map(value => { - let channel; - let language; // default language to value - - language = value; - - if (/^CC\d=/.test(value)) { - [channel, language] = value.split('='); - } else if (/^CC\d$/.test(value)) { - channel = value; - } - - return { - channel, - language - }; - }); - } else if (service.schemeIdUri === 'urn:scte:dash:cc:cea-708:2015') { - const values = typeof service.value !== 'string' ? [] : service.value.split(';'); - return values.map(value => { - const flags = { - // service or channel number 1-63 - 'channel': undefined, - // language is a 3ALPHA per ISO 639.2/B - // field is required - 'language': undefined, - // BIT 1/0 or ? - // default value is 1, meaning 16:9 aspect ratio, 0 is 4:3, ? is unknown - 'aspectRatio': 1, - // BIT 1/0 - // easy reader flag indicated the text is tailed to the needs of beginning readers - // default 0, or off - 'easyReader': 0, - // BIT 1/0 - // If 3d metadata is present (CEA-708.1) then 1 - // default 0 - '3D': 0 - }; - - if (/=/.test(value)) { - const [channel, opts = ''] = value.split('='); - flags.channel = channel; - flags.language = value; - opts.split(',').forEach(opt => { - const [name, val] = opt.split(':'); + if(child || isHTML && !/^(?:meta|link|img|br|hr|input)$/i.test(nodeName)){ + buf.push('>'); + //if is cdata child node + if(isHTML && /^script$/i.test(nodeName)){ + while(child){ + if(child.data){ + buf.push(child.data); + }else{ + serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice()); + } + child = child.nextSibling; + } + }else + { + while(child){ + serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice()); + child = child.nextSibling; + } + } + buf.push(''); + }else{ + buf.push('/>'); + } + // remove added visible namespaces + //visibleNamespaces.length = startVisibleNamespaces; + return; + case DOCUMENT_NODE: + case DOCUMENT_FRAGMENT_NODE: + var child = node.firstChild; + while(child){ + serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice()); + child = child.nextSibling; + } + return; + case ATTRIBUTE_NODE: + return addSerializedAttribute(buf, node.name, node.value); + case TEXT_NODE: + /** + * The ampersand character (&) and the left angle bracket (<) must not appear in their literal form, + * except when used as markup delimiters, or within a comment, a processing instruction, or a CDATA section. + * If they are needed elsewhere, they must be escaped using either numeric character references or the strings + * `&` and `<` respectively. + * The right angle bracket (>) may be represented using the string " > ", and must, for compatibility, + * be escaped using either `>` or a character reference when it appears in the string `]]>` in content, + * when that string is not marking the end of a CDATA section. + * + * In the content of elements, character data is any string of characters + * which does not contain the start-delimiter of any markup + * and does not include the CDATA-section-close delimiter, `]]>`. + * + * @see https://www.w3.org/TR/xml/#NT-CharData + * @see https://w3c.github.io/DOM-Parsing/#xml-serializing-a-text-node + */ + return buf.push(node.data + .replace(/[<&>]/g,_xmlEncoder) + ); + case CDATA_SECTION_NODE: + return buf.push( ''); + case COMMENT_NODE: + return buf.push( ""); + case DOCUMENT_TYPE_NODE: + var pubid = node.publicId; + var sysid = node.systemId; + buf.push(''); + }else if(sysid && sysid!='.'){ + buf.push(' SYSTEM ', sysid, '>'); + }else{ + var sub = node.internalSubset; + if(sub){ + buf.push(" [",sub,"]"); + } + buf.push(">"); + } + return; + case PROCESSING_INSTRUCTION_NODE: + return buf.push( ""); + case ENTITY_REFERENCE_NODE: + return buf.push( '&',node.nodeName,';'); + //case ENTITY_NODE: + //case NOTATION_NODE: + default: + buf.push('??',node.nodeName); + } +} +function importNode(doc,node,deep){ + var node2; + switch (node.nodeType) { + case ELEMENT_NODE: + node2 = node.cloneNode(false); + node2.ownerDocument = doc; + //var attrs = node2.attributes; + //var len = attrs.length; + //for(var i=0;i { - // get and flatten all EventStreams tags and parse attributes and children - return flatten(findChildren(period.node, 'EventStream').map(eventStream => { - const eventStreamAttributes = parseAttributes(eventStream); - const schemeIdUri = eventStreamAttributes.schemeIdUri; // find all Events per EventStream tag and map to return objects + default: + this.data = data; + this.value = data; + this.nodeValue = data; + } + } + }) - return findChildren(eventStream, 'Event').map(event => { - const eventAttributes = parseAttributes(event); - const presentationTime = eventAttributes.presentationTime || 0; - const timescale = eventStreamAttributes.timescale || 1; - const duration = eventAttributes.duration || 0; - const start = presentationTime / timescale + period.attributes.start; - return { - schemeIdUri, - value: eventStreamAttributes.value, - id: eventAttributes.id, - start, - end: start + duration / timescale, - messageData: getContent(event) || eventAttributes.messageData, - contentEncoding: eventStreamAttributes.contentEncoding, - presentationTimeOffset: eventStreamAttributes.presentationTimeOffset || 0 - }; - }); - })); -}; -/** - * Maps an AdaptationSet node to a list of Representation information objects - * - * @name toRepresentationsCallback - * @function - * @param {Node} adaptationSet - * AdaptationSet node from the mpd - * @return {RepresentationInformation[]} - * List of objects containing Representaion information - */ + function getTextContent(node){ + switch(node.nodeType){ + case ELEMENT_NODE: + case DOCUMENT_FRAGMENT_NODE: + var buf = []; + node = node.firstChild; + while(node){ + if(node.nodeType!==7 && node.nodeType !==8){ + buf.push(getTextContent(node)); + } + node = node.nextSibling; + } + return buf.join(''); + default: + return node.nodeValue; + } + } -/** - * Returns a callback for Array.prototype.map for mapping AdaptationSet nodes to a list of - * Representation information objects - * - * @param {Object} periodAttributes - * Contains attributes inherited by the Period - * @param {Object[]} periodBaseUrls - * Contains list of objects with resolved base urls and attributes - * inherited by the Period - * @param {string[]} periodSegmentInfo - * Contains Segment Information at the period level - * @return {toRepresentationsCallback} - * Callback map function - */ + __set__ = function(object,key,value){ + //console.log(value) + object['$$'+key] = value + } + } +}catch(e){//ie8 +} -const toRepresentations = (periodAttributes, periodBaseUrls, periodSegmentInfo) => adaptationSet => { - const adaptationSetAttributes = parseAttributes(adaptationSet); - const adaptationSetBaseUrls = buildBaseUrls(periodBaseUrls, findChildren(adaptationSet, 'BaseURL')); - const role = findChildren(adaptationSet, 'Role')[0]; - const roleAttributes = { - role: parseAttributes(role) - }; - let attrs = merge(periodAttributes, adaptationSetAttributes, roleAttributes); - const accessibility = findChildren(adaptationSet, 'Accessibility')[0]; - const captionServices = parseCaptionServiceMetadata(parseAttributes(accessibility)); +//if(typeof require == 'function'){ + exports.DocumentType = DocumentType; + exports.DOMException = DOMException; + exports.DOMImplementation = DOMImplementation; + exports.Element = Element; + exports.Node = Node; + exports.NodeList = NodeList; + exports.XMLSerializer = XMLSerializer; +//} - if (captionServices) { - attrs = merge(attrs, { - captionServices - }); - } - const label = findChildren(adaptationSet, 'Label')[0]; +/***/ }), - if (label && label.childNodes.length) { - const labelVal = label.childNodes[0].nodeValue.trim(); - attrs = merge(attrs, { - label: labelVal - }); - } +/***/ "./node_modules/mpd-parser/node_modules/@xmldom/xmldom/lib/entities.js": +/*!*****************************************************************************!*\ + !*** ./node_modules/mpd-parser/node_modules/@xmldom/xmldom/lib/entities.js ***! + \*****************************************************************************/ +/***/ ((__unused_webpack_module, exports, __webpack_require__) => { - const contentProtection = generateKeySystemInformation(findChildren(adaptationSet, 'ContentProtection')); +"use strict"; - if (Object.keys(contentProtection).length) { - attrs = merge(attrs, { - contentProtection - }); - } - const segmentInfo = getSegmentInformation(adaptationSet); - const representations = findChildren(adaptationSet, 'Representation'); - const adaptationSetSegmentInfo = merge(periodSegmentInfo, segmentInfo); - return flatten(representations.map(inheritBaseUrls(attrs, adaptationSetBaseUrls, adaptationSetSegmentInfo))); -}; -/** - * Contains all period information for mapping nodes onto adaptation sets. - * - * @typedef {Object} PeriodInformation - * @property {Node} period.node - * Period node from the mpd - * @property {Object} period.attributes - * Parsed period attributes from node plus any added - */ +var freeze = (__webpack_require__(/*! ./conventions */ "./node_modules/mpd-parser/node_modules/@xmldom/xmldom/lib/conventions.js").freeze); /** - * Maps a PeriodInformation object to a list of Representation information objects for all - * AdaptationSet nodes contained within the Period. + * The entities that are predefined in every XML document. * - * @name toAdaptationSetsCallback - * @function - * @param {PeriodInformation} period - * Period object containing necessary period information - * @param {number} periodStart - * Start time of the Period within the mpd - * @return {RepresentationInformation[]} - * List of objects containing Representaion information + * @see https://www.w3.org/TR/2006/REC-xml11-20060816/#sec-predefined-ent W3C XML 1.1 + * @see https://www.w3.org/TR/2008/REC-xml-20081126/#sec-predefined-ent W3C XML 1.0 + * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Predefined_entities_in_XML Wikipedia */ +exports.XML_ENTITIES = freeze({ + amp: '&', + apos: "'", + gt: '>', + lt: '<', + quot: '"', +}); /** - * Returns a callback for Array.prototype.map for mapping Period nodes to a list of - * Representation information objects + * A map of all entities that are detected in an HTML document. + * They contain all entries from `XML_ENTITIES`. * - * @param {Object} mpdAttributes - * Contains attributes inherited by the mpd - * @param {Object[]} mpdBaseUrls - * Contains list of objects with resolved base urls and attributes - * inherited by the mpd - * @return {toAdaptationSetsCallback} - * Callback map function - */ - -const toAdaptationSets = (mpdAttributes, mpdBaseUrls) => (period, index) => { - const periodBaseUrls = buildBaseUrls(mpdBaseUrls, findChildren(period.node, 'BaseURL')); - const periodAttributes = merge(mpdAttributes, { - periodStart: period.attributes.start - }); - - if (typeof period.attributes.duration === 'number') { - periodAttributes.periodDuration = period.attributes.duration; - } - - const adaptationSets = findChildren(period.node, 'AdaptationSet'); - const periodSegmentInfo = getSegmentInformation(period.node); - return flatten(adaptationSets.map(toRepresentations(periodAttributes, periodBaseUrls, periodSegmentInfo))); -}; -/** - * Tranforms an array of content steering nodes into an object - * containing CDN content steering information from the MPD manifest. - * - * For more information on the DASH spec for Content Steering parsing, see: - * https://dashif.org/docs/DASH-IF-CTS-00XX-Content-Steering-Community-Review.pdf - * - * @param {Node[]} contentSteeringNodes - * Content steering nodes - * @param {Function} eventHandler - * The event handler passed into the parser options to handle warnings - * @return {Object} - * Object containing content steering data - */ - -const generateContentSteeringInformation = (contentSteeringNodes, eventHandler) => { - // If there are more than one ContentSteering tags, throw an error - if (contentSteeringNodes.length > 1) { - eventHandler({ - type: 'warn', - message: 'The MPD manifest should contain no more than one ContentSteering tag' - }); - } // Return a null value if there are no ContentSteering tags - - - if (!contentSteeringNodes.length) { - return null; - } - - const infoFromContentSteeringTag = merge({ - serverURL: getContent(contentSteeringNodes[0]) - }, parseAttributes(contentSteeringNodes[0])); // Converts `queryBeforeStart` to a boolean, as well as setting the default value - // to `false` if it doesn't exist - - infoFromContentSteeringTag.queryBeforeStart = infoFromContentSteeringTag.queryBeforeStart === 'true'; - return infoFromContentSteeringTag; -}; -/** - * Gets Period@start property for a given period. - * - * @param {Object} options - * Options object - * @param {Object} options.attributes - * Period attributes - * @param {Object} [options.priorPeriodAttributes] - * Prior period attributes (if prior period is available) - * @param {string} options.mpdType - * The MPD@type these periods came from - * @return {number|null} - * The period start, or null if it's an early available period or error - */ - -const getPeriodStart = ({ - attributes, - priorPeriodAttributes, - mpdType -}) => { - // Summary of period start time calculation from DASH spec section 5.3.2.1 - // - // A period's start is the first period's start + time elapsed after playing all - // prior periods to this one. Periods continue one after the other in time (without - // gaps) until the end of the presentation. - // - // The value of Period@start should be: - // 1. if Period@start is present: value of Period@start - // 2. if previous period exists and it has @duration: previous Period@start + - // previous Period@duration - // 3. if this is first period and MPD@type is 'static': 0 - // 4. in all other cases, consider the period an "early available period" (note: not - // currently supported) - // (1) - if (typeof attributes.start === 'number') { - return attributes.start; - } // (2) - - - if (priorPeriodAttributes && typeof priorPeriodAttributes.start === 'number' && typeof priorPeriodAttributes.duration === 'number') { - return priorPeriodAttributes.start + priorPeriodAttributes.duration; - } // (3) - - - if (!priorPeriodAttributes && mpdType === 'static') { - return 0; - } // (4) - // There is currently no logic for calculating the Period@start value if there is - // no Period@start or prior Period@start and Period@duration available. This is not made - // explicit by the DASH interop guidelines or the DASH spec, however, since there's - // nothing about any other resolution strategies, it's implied. Thus, this case should - // be considered an early available period, or error, and null should suffice for both - // of those cases. - - - return null; -}; -/** - * Traverses the mpd xml tree to generate a list of Representation information objects - * that have inherited attributes from parent nodes - * - * @param {Node} mpd - * The root node of the mpd - * @param {Object} options - * Available options for inheritAttributes - * @param {string} options.manifestUri - * The uri source of the mpd - * @param {number} options.NOW - * Current time per DASH IOP. Default is current time in ms since epoch - * @param {number} options.clientOffset - * Client time difference from NOW (in milliseconds) - * @return {RepresentationInformation[]} - * List of objects containing Representation information - */ - -const inheritAttributes = (mpd, options = {}) => { - const { - manifestUri = '', - NOW = Date.now(), - clientOffset = 0, - // TODO: For now, we are expecting an eventHandler callback function - // to be passed into the mpd parser as an option. - // In the future, we should enable stream parsing by using the Stream class from vhs-utils. - // This will support new features including a standardized event handler. - // See the m3u8 parser for examples of how stream parsing is currently used for HLS parsing. - // https://github.com/videojs/vhs-utils/blob/88d6e10c631e57a5af02c5a62bc7376cd456b4f5/src/stream.js#L9 - eventHandler = function () {} - } = options; - const periodNodes = findChildren(mpd, 'Period'); - - if (!periodNodes.length) { - throw new Error(errors.INVALID_NUMBER_OF_PERIOD); - } - - const locations = findChildren(mpd, 'Location'); - const mpdAttributes = parseAttributes(mpd); - const mpdBaseUrls = buildBaseUrls([{ - baseUrl: manifestUri - }], findChildren(mpd, 'BaseURL')); - const contentSteeringNodes = findChildren(mpd, 'ContentSteering'); // See DASH spec section 5.3.1.2, Semantics of MPD element. Default type to 'static'. - - mpdAttributes.type = mpdAttributes.type || 'static'; - mpdAttributes.sourceDuration = mpdAttributes.mediaPresentationDuration || 0; - mpdAttributes.NOW = NOW; - mpdAttributes.clientOffset = clientOffset; - - if (locations.length) { - mpdAttributes.locations = locations.map(getContent); - } - - const periods = []; // Since toAdaptationSets acts on individual periods right now, the simplest approach to - // adding properties that require looking at prior periods is to parse attributes and add - // missing ones before toAdaptationSets is called. If more such properties are added, it - // may be better to refactor toAdaptationSets. - - periodNodes.forEach((node, index) => { - const attributes = parseAttributes(node); // Use the last modified prior period, as it may contain added information necessary - // for this period. - - const priorPeriod = periods[index - 1]; - attributes.start = getPeriodStart({ - attributes, - priorPeriodAttributes: priorPeriod ? priorPeriod.attributes : null, - mpdType: mpdAttributes.type - }); - periods.push({ - node, - attributes - }); - }); - return { - locations: mpdAttributes.locations, - contentSteeringInfo: generateContentSteeringInformation(contentSteeringNodes, eventHandler), - // TODO: There are occurences where this `representationInfo` array contains undesired - // duplicates. This generally occurs when there are multiple BaseURL nodes that are - // direct children of the MPD node. When we attempt to resolve URLs from a combination of the - // parent BaseURL and a child BaseURL, and the value does not resolve, - // we end up returning the child BaseURL multiple times. - // We need to determine a way to remove these duplicates in a safe way. - // See: https://github.com/videojs/mpd-parser/pull/17#discussion_r162750527 - representationInfo: flatten(periods.map(toAdaptationSets(mpdAttributes, mpdBaseUrls))), - eventStream: flatten(periods.map(toEventStream)) - }; -}; - -const stringToMpdXml = manifestString => { - if (manifestString === '') { - throw new Error(errors.DASH_EMPTY_MANIFEST); - } - - const parser = new _xmldom_xmldom__WEBPACK_IMPORTED_MODULE_4__.DOMParser(); - let xml; - let mpd; - - try { - xml = parser.parseFromString(manifestString, 'application/xml'); - mpd = xml && xml.documentElement.tagName === 'MPD' ? xml.documentElement : null; - } catch (e) {// ie 11 throws on invalid xml - } - - if (!mpd || mpd && mpd.getElementsByTagName('parsererror').length > 0) { - throw new Error(errors.DASH_INVALID_XML); - } - - return mpd; -}; - -/** - * Parses the manifest for a UTCTiming node, returning the nodes attributes if found - * - * @param {string} mpd - * XML string of the MPD manifest - * @return {Object|null} - * Attributes of UTCTiming node specified in the manifest. Null if none found - */ - -const parseUTCTimingScheme = mpd => { - const UTCTimingNode = findChildren(mpd, 'UTCTiming')[0]; - - if (!UTCTimingNode) { - return null; - } - - const attributes = parseAttributes(UTCTimingNode); - - switch (attributes.schemeIdUri) { - case 'urn:mpeg:dash:utc:http-head:2014': - case 'urn:mpeg:dash:utc:http-head:2012': - attributes.method = 'HEAD'; - break; - - case 'urn:mpeg:dash:utc:http-xsdate:2014': - case 'urn:mpeg:dash:utc:http-iso:2014': - case 'urn:mpeg:dash:utc:http-xsdate:2012': - case 'urn:mpeg:dash:utc:http-iso:2012': - attributes.method = 'GET'; - break; - - case 'urn:mpeg:dash:utc:direct:2014': - case 'urn:mpeg:dash:utc:direct:2012': - attributes.method = 'DIRECT'; - attributes.value = Date.parse(attributes.value); - break; - - case 'urn:mpeg:dash:utc:http-ntp:2014': - case 'urn:mpeg:dash:utc:ntp:2014': - case 'urn:mpeg:dash:utc:sntp:2014': - default: - throw new Error(errors.UNSUPPORTED_UTC_TIMING_SCHEME); - } - - return attributes; -}; - -const VERSION = version; -/* - * Given a DASH manifest string and options, parses the DASH manifest into an object in the - * form outputed by m3u8-parser and accepted by videojs/http-streaming. - * - * For live DASH manifests, if `previousManifest` is provided in options, then the newly - * parsed DASH manifest will have its media sequence and discontinuity sequence values - * updated to reflect its position relative to the prior manifest. - * - * @param {string} manifestString - the DASH manifest as a string - * @param {options} [options] - any options - * - * @return {Object} the manifest object - */ - -const parse = (manifestString, options = {}) => { - const parsedManifestInfo = inheritAttributes(stringToMpdXml(manifestString), options); - const playlists = toPlaylists(parsedManifestInfo.representationInfo); - return toM3u8({ - dashPlaylists: playlists, - locations: parsedManifestInfo.locations, - contentSteering: parsedManifestInfo.contentSteeringInfo, - sidxMapping: options.sidxMapping, - previousManifest: options.previousManifest, - eventStream: parsedManifestInfo.eventStream - }); -}; -/** - * Parses the manifest for a UTCTiming node, returning the nodes attributes if found - * - * @param {string} manifestString - * XML string of the MPD manifest - * @return {Object|null} - * Attributes of UTCTiming node specified in the manifest. Null if none found - */ - - -const parseUTCTiming = manifestString => parseUTCTimingScheme(stringToMpdXml(manifestString)); - - - - -/***/ }), - -/***/ "./node_modules/mpd-parser/node_modules/@videojs/vhs-utils/es/decode-b64-to-uint8-array.js": -/*!*************************************************************************************************!*\ - !*** ./node_modules/mpd-parser/node_modules/@videojs/vhs-utils/es/decode-b64-to-uint8-array.js ***! - \*************************************************************************************************/ -/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { - -"use strict"; -__webpack_require__.r(__webpack_exports__); -/* harmony export */ __webpack_require__.d(__webpack_exports__, { -/* harmony export */ "default": () => (/* binding */ decodeB64ToUint8Array) -/* harmony export */ }); -/* harmony import */ var global_window__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! global/window */ "./node_modules/global/window.js"); -/* harmony import */ var global_window__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(global_window__WEBPACK_IMPORTED_MODULE_0__); - - -var atob = function atob(s) { - return (global_window__WEBPACK_IMPORTED_MODULE_0___default().atob) ? global_window__WEBPACK_IMPORTED_MODULE_0___default().atob(s) : Buffer.from(s, 'base64').toString('binary'); -}; - -function decodeB64ToUint8Array(b64Text) { - var decodedString = atob(b64Text); - var array = new Uint8Array(decodedString.length); - - for (var i = 0; i < decodedString.length; i++) { - array[i] = decodedString.charCodeAt(i); - } - - return array; -} - -/***/ }), - -/***/ "./node_modules/mpd-parser/node_modules/@videojs/vhs-utils/es/media-groups.js": -/*!************************************************************************************!*\ - !*** ./node_modules/mpd-parser/node_modules/@videojs/vhs-utils/es/media-groups.js ***! - \************************************************************************************/ -/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { - -"use strict"; -__webpack_require__.r(__webpack_exports__); -/* harmony export */ __webpack_require__.d(__webpack_exports__, { -/* harmony export */ forEachMediaGroup: () => (/* binding */ forEachMediaGroup) -/* harmony export */ }); -/** - * Loops through all supported media groups in master and calls the provided - * callback for each group - * - * @param {Object} master - * The parsed master manifest object - * @param {string[]} groups - * The media groups to call the callback for - * @param {Function} callback - * Callback to call for each media group - */ -var forEachMediaGroup = function forEachMediaGroup(master, groups, callback) { - groups.forEach(function (mediaType) { - for (var groupKey in master.mediaGroups[mediaType]) { - for (var labelKey in master.mediaGroups[mediaType][groupKey]) { - var mediaProperties = master.mediaGroups[mediaType][groupKey][labelKey]; - callback(mediaProperties, mediaType, groupKey, labelKey); - } - } - }); -}; - -/***/ }), - -/***/ "./node_modules/mpd-parser/node_modules/@videojs/vhs-utils/es/resolve-url.js": -/*!***********************************************************************************!*\ - !*** ./node_modules/mpd-parser/node_modules/@videojs/vhs-utils/es/resolve-url.js ***! - \***********************************************************************************/ -/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { - -"use strict"; -__webpack_require__.r(__webpack_exports__); -/* harmony export */ __webpack_require__.d(__webpack_exports__, { -/* harmony export */ "default": () => (__WEBPACK_DEFAULT_EXPORT__) -/* harmony export */ }); -/* harmony import */ var url_toolkit__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! url-toolkit */ "./node_modules/url-toolkit/src/url-toolkit.js"); -/* harmony import */ var url_toolkit__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(url_toolkit__WEBPACK_IMPORTED_MODULE_0__); -/* harmony import */ var global_window__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! global/window */ "./node_modules/global/window.js"); -/* harmony import */ var global_window__WEBPACK_IMPORTED_MODULE_1___default = /*#__PURE__*/__webpack_require__.n(global_window__WEBPACK_IMPORTED_MODULE_1__); - - -var DEFAULT_LOCATION = 'http://example.com'; - -var resolveUrl = function resolveUrl(baseUrl, relativeUrl) { - // return early if we don't need to resolve - if (/^[a-z]+:/i.test(relativeUrl)) { - return relativeUrl; - } // if baseUrl is a data URI, ignore it and resolve everything relative to window.location - - - if (/^data:/.test(baseUrl)) { - baseUrl = (global_window__WEBPACK_IMPORTED_MODULE_1___default().location) && (global_window__WEBPACK_IMPORTED_MODULE_1___default().location).href || ''; - } // IE11 supports URL but not the URL constructor - // feature detect the behavior we want - - - var nativeURL = typeof (global_window__WEBPACK_IMPORTED_MODULE_1___default().URL) === 'function'; - var protocolLess = /^\/\//.test(baseUrl); // remove location if window.location isn't available (i.e. we're in node) - // and if baseUrl isn't an absolute url - - var removeLocation = !(global_window__WEBPACK_IMPORTED_MODULE_1___default().location) && !/\/\//i.test(baseUrl); // if the base URL is relative then combine with the current location - - if (nativeURL) { - baseUrl = new (global_window__WEBPACK_IMPORTED_MODULE_1___default().URL)(baseUrl, (global_window__WEBPACK_IMPORTED_MODULE_1___default().location) || DEFAULT_LOCATION); - } else if (!/\/\//i.test(baseUrl)) { - baseUrl = url_toolkit__WEBPACK_IMPORTED_MODULE_0___default().buildAbsoluteURL((global_window__WEBPACK_IMPORTED_MODULE_1___default().location) && (global_window__WEBPACK_IMPORTED_MODULE_1___default().location).href || '', baseUrl); - } - - if (nativeURL) { - var newUrl = new URL(relativeUrl, baseUrl); // if we're a protocol-less url, remove the protocol - // and if we're location-less, remove the location - // otherwise, return the url unmodified - - if (removeLocation) { - return newUrl.href.slice(DEFAULT_LOCATION.length); - } else if (protocolLess) { - return newUrl.href.slice(newUrl.protocol.length); - } - - return newUrl.href; - } - - return url_toolkit__WEBPACK_IMPORTED_MODULE_0___default().buildAbsoluteURL(baseUrl, relativeUrl); -}; - -/* harmony default export */ const __WEBPACK_DEFAULT_EXPORT__ = (resolveUrl); - -/***/ }), - -/***/ "./node_modules/mpd-parser/node_modules/@xmldom/xmldom/lib/conventions.js": -/*!********************************************************************************!*\ - !*** ./node_modules/mpd-parser/node_modules/@xmldom/xmldom/lib/conventions.js ***! - \********************************************************************************/ -/***/ ((__unused_webpack_module, exports) => { - -"use strict"; - - -/** - * Ponyfill for `Array.prototype.find` which is only available in ES6 runtimes. - * - * Works with anything that has a `length` property and index access properties, including NodeList. - * - * @template {unknown} T - * @param {Array | ({length:number, [number]: T})} list - * @param {function (item: T, index: number, list:Array | ({length:number, [number]: T})):boolean} predicate - * @param {Partial>?} ac `Array.prototype` by default, - * allows injecting a custom implementation in tests - * @returns {T | undefined} - * - * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find - * @see https://tc39.es/ecma262/multipage/indexed-collections.html#sec-array.prototype.find - */ -function find(list, predicate, ac) { - if (ac === undefined) { - ac = Array.prototype; - } - if (list && typeof ac.find === 'function') { - return ac.find.call(list, predicate); - } - for (var i = 0; i < list.length; i++) { - if (Object.prototype.hasOwnProperty.call(list, i)) { - var item = list[i]; - if (predicate.call(undefined, item, i, list)) { - return item; - } - } - } -} - -/** - * "Shallow freezes" an object to render it immutable. - * Uses `Object.freeze` if available, - * otherwise the immutability is only in the type. - * - * Is used to create "enum like" objects. - * - * @template T - * @param {T} object the object to freeze - * @param {Pick = Object} oc `Object` by default, - * allows to inject custom object constructor for tests - * @returns {Readonly} - * - * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/freeze - */ -function freeze(object, oc) { - if (oc === undefined) { - oc = Object - } - return oc && typeof oc.freeze === 'function' ? oc.freeze(object) : object -} - -/** - * Since we can not rely on `Object.assign` we provide a simplified version - * that is sufficient for our needs. - * - * @param {Object} target - * @param {Object | null | undefined} source - * - * @returns {Object} target - * @throws TypeError if target is not an object - * - * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign - * @see https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-object.assign - */ -function assign(target, source) { - if (target === null || typeof target !== 'object') { - throw new TypeError('target is not an object') - } - for (var key in source) { - if (Object.prototype.hasOwnProperty.call(source, key)) { - target[key] = source[key] - } - } - return target -} - -/** - * All mime types that are allowed as input to `DOMParser.parseFromString` - * - * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString#Argument02 MDN - * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#domparsersupportedtype WHATWG HTML Spec - * @see DOMParser.prototype.parseFromString - */ -var MIME_TYPE = freeze({ - /** - * `text/html`, the only mime type that triggers treating an XML document as HTML. - * - * @see DOMParser.SupportedType.isHTML - * @see https://www.iana.org/assignments/media-types/text/html IANA MimeType registration - * @see https://en.wikipedia.org/wiki/HTML Wikipedia - * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString MDN - * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-domparser-parsefromstring WHATWG HTML Spec - */ - HTML: 'text/html', - - /** - * Helper method to check a mime type if it indicates an HTML document - * - * @param {string} [value] - * @returns {boolean} - * - * @see https://www.iana.org/assignments/media-types/text/html IANA MimeType registration - * @see https://en.wikipedia.org/wiki/HTML Wikipedia - * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString MDN - * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-domparser-parsefromstring */ - isHTML: function (value) { - return value === MIME_TYPE.HTML - }, - - /** - * `application/xml`, the standard mime type for XML documents. - * - * @see https://www.iana.org/assignments/media-types/application/xml IANA MimeType registration - * @see https://tools.ietf.org/html/rfc7303#section-9.1 RFC 7303 - * @see https://en.wikipedia.org/wiki/XML_and_MIME Wikipedia - */ - XML_APPLICATION: 'application/xml', - - /** - * `text/html`, an alias for `application/xml`. - * - * @see https://tools.ietf.org/html/rfc7303#section-9.2 RFC 7303 - * @see https://www.iana.org/assignments/media-types/text/xml IANA MimeType registration - * @see https://en.wikipedia.org/wiki/XML_and_MIME Wikipedia - */ - XML_TEXT: 'text/xml', - - /** - * `application/xhtml+xml`, indicates an XML document that has the default HTML namespace, - * but is parsed as an XML document. - * - * @see https://www.iana.org/assignments/media-types/application/xhtml+xml IANA MimeType registration - * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocument WHATWG DOM Spec - * @see https://en.wikipedia.org/wiki/XHTML Wikipedia - */ - XML_XHTML_APPLICATION: 'application/xhtml+xml', - - /** - * `image/svg+xml`, - * - * @see https://www.iana.org/assignments/media-types/image/svg+xml IANA MimeType registration - * @see https://www.w3.org/TR/SVG11/ W3C SVG 1.1 - * @see https://en.wikipedia.org/wiki/Scalable_Vector_Graphics Wikipedia - */ - XML_SVG_IMAGE: 'image/svg+xml', -}) - -/** - * Namespaces that are used in this code base. - * - * @see http://www.w3.org/TR/REC-xml-names - */ -var NAMESPACE = freeze({ - /** - * The XHTML namespace. - * - * @see http://www.w3.org/1999/xhtml - */ - HTML: 'http://www.w3.org/1999/xhtml', - - /** - * Checks if `uri` equals `NAMESPACE.HTML`. - * - * @param {string} [uri] - * - * @see NAMESPACE.HTML - */ - isHTML: function (uri) { - return uri === NAMESPACE.HTML - }, - - /** - * The SVG namespace. - * - * @see http://www.w3.org/2000/svg - */ - SVG: 'http://www.w3.org/2000/svg', - - /** - * The `xml:` namespace. - * - * @see http://www.w3.org/XML/1998/namespace - */ - XML: 'http://www.w3.org/XML/1998/namespace', - - /** - * The `xmlns:` namespace - * - * @see https://www.w3.org/2000/xmlns/ - */ - XMLNS: 'http://www.w3.org/2000/xmlns/', -}) - -exports.assign = assign; -exports.find = find; -exports.freeze = freeze; -exports.MIME_TYPE = MIME_TYPE; -exports.NAMESPACE = NAMESPACE; - - -/***/ }), - -/***/ "./node_modules/mpd-parser/node_modules/@xmldom/xmldom/lib/dom-parser.js": -/*!*******************************************************************************!*\ - !*** ./node_modules/mpd-parser/node_modules/@xmldom/xmldom/lib/dom-parser.js ***! - \*******************************************************************************/ -/***/ ((__unused_webpack_module, exports, __webpack_require__) => { - -var conventions = __webpack_require__(/*! ./conventions */ "./node_modules/mpd-parser/node_modules/@xmldom/xmldom/lib/conventions.js"); -var dom = __webpack_require__(/*! ./dom */ "./node_modules/mpd-parser/node_modules/@xmldom/xmldom/lib/dom.js") -var entities = __webpack_require__(/*! ./entities */ "./node_modules/mpd-parser/node_modules/@xmldom/xmldom/lib/entities.js"); -var sax = __webpack_require__(/*! ./sax */ "./node_modules/mpd-parser/node_modules/@xmldom/xmldom/lib/sax.js"); - -var DOMImplementation = dom.DOMImplementation; - -var NAMESPACE = conventions.NAMESPACE; - -var ParseError = sax.ParseError; -var XMLReader = sax.XMLReader; - -/** - * Normalizes line ending according to https://www.w3.org/TR/xml11/#sec-line-ends: - * - * > XML parsed entities are often stored in computer files which, - * > for editing convenience, are organized into lines. - * > These lines are typically separated by some combination - * > of the characters CARRIAGE RETURN (#xD) and LINE FEED (#xA). - * > - * > To simplify the tasks of applications, the XML processor must behave - * > as if it normalized all line breaks in external parsed entities (including the document entity) - * > on input, before parsing, by translating all of the following to a single #xA character: - * > - * > 1. the two-character sequence #xD #xA - * > 2. the two-character sequence #xD #x85 - * > 3. the single character #x85 - * > 4. the single character #x2028 - * > 5. any #xD character that is not immediately followed by #xA or #x85. - * - * @param {string} input - * @returns {string} - */ -function normalizeLineEndings(input) { - return input - .replace(/\r[\n\u0085]/g, '\n') - .replace(/[\r\u0085\u2028]/g, '\n') -} - -/** - * @typedef Locator - * @property {number} [columnNumber] - * @property {number} [lineNumber] - */ - -/** - * @typedef DOMParserOptions - * @property {DOMHandler} [domBuilder] - * @property {Function} [errorHandler] - * @property {(string) => string} [normalizeLineEndings] used to replace line endings before parsing - * defaults to `normalizeLineEndings` - * @property {Locator} [locator] - * @property {Record} [xmlns] - * - * @see normalizeLineEndings - */ - -/** - * The DOMParser interface provides the ability to parse XML or HTML source code - * from a string into a DOM `Document`. - * - * _xmldom is different from the spec in that it allows an `options` parameter, - * to override the default behavior._ - * - * @param {DOMParserOptions} [options] - * @constructor - * - * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser - * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-parsing-and-serialization - */ -function DOMParser(options){ - this.options = options ||{locator:{}}; -} - -DOMParser.prototype.parseFromString = function(source,mimeType){ - var options = this.options; - var sax = new XMLReader(); - var domBuilder = options.domBuilder || new DOMHandler();//contentHandler and LexicalHandler - var errorHandler = options.errorHandler; - var locator = options.locator; - var defaultNSMap = options.xmlns||{}; - var isHTML = /\/x?html?$/.test(mimeType);//mimeType.toLowerCase().indexOf('html') > -1; - var entityMap = isHTML ? entities.HTML_ENTITIES : entities.XML_ENTITIES; - if(locator){ - domBuilder.setDocumentLocator(locator) - } - - sax.errorHandler = buildErrorHandler(errorHandler,domBuilder,locator); - sax.domBuilder = options.domBuilder || domBuilder; - if(isHTML){ - defaultNSMap[''] = NAMESPACE.HTML; - } - defaultNSMap.xml = defaultNSMap.xml || NAMESPACE.XML; - var normalize = options.normalizeLineEndings || normalizeLineEndings; - if (source && typeof source === 'string') { - sax.parse( - normalize(source), - defaultNSMap, - entityMap - ) - } else { - sax.errorHandler.error('invalid doc source') - } - return domBuilder.doc; -} -function buildErrorHandler(errorImpl,domBuilder,locator){ - if(!errorImpl){ - if(domBuilder instanceof DOMHandler){ - return domBuilder; - } - errorImpl = domBuilder ; - } - var errorHandler = {} - var isCallback = errorImpl instanceof Function; - locator = locator||{} - function build(key){ - var fn = errorImpl[key]; - if(!fn && isCallback){ - fn = errorImpl.length == 2?function(msg){errorImpl(key,msg)}:errorImpl; - } - errorHandler[key] = fn && function(msg){ - fn('[xmldom '+key+']\t'+msg+_locator(locator)); - }||function(){}; - } - build('warning'); - build('error'); - build('fatalError'); - return errorHandler; -} - -//console.log('#\n\n\n\n\n\n\n####') -/** - * +ContentHandler+ErrorHandler - * +LexicalHandler+EntityResolver2 - * -DeclHandler-DTDHandler - * - * DefaultHandler:EntityResolver, DTDHandler, ContentHandler, ErrorHandler - * DefaultHandler2:DefaultHandler,LexicalHandler, DeclHandler, EntityResolver2 - * @link http://www.saxproject.org/apidoc/org/xml/sax/helpers/DefaultHandler.html - */ -function DOMHandler() { - this.cdata = false; -} -function position(locator,node){ - node.lineNumber = locator.lineNumber; - node.columnNumber = locator.columnNumber; -} -/** - * @see org.xml.sax.ContentHandler#startDocument - * @link http://www.saxproject.org/apidoc/org/xml/sax/ContentHandler.html - */ -DOMHandler.prototype = { - startDocument : function() { - this.doc = new DOMImplementation().createDocument(null, null, null); - if (this.locator) { - this.doc.documentURI = this.locator.systemId; - } - }, - startElement:function(namespaceURI, localName, qName, attrs) { - var doc = this.doc; - var el = doc.createElementNS(namespaceURI, qName||localName); - var len = attrs.length; - appendElement(this, el); - this.currentElement = el; - - this.locator && position(this.locator,el) - for (var i = 0 ; i < len; i++) { - var namespaceURI = attrs.getURI(i); - var value = attrs.getValue(i); - var qName = attrs.getQName(i); - var attr = doc.createAttributeNS(namespaceURI, qName); - this.locator &&position(attrs.getLocator(i),attr); - attr.value = attr.nodeValue = value; - el.setAttributeNode(attr) - } - }, - endElement:function(namespaceURI, localName, qName) { - var current = this.currentElement - var tagName = current.tagName; - this.currentElement = current.parentNode; - }, - startPrefixMapping:function(prefix, uri) { - }, - endPrefixMapping:function(prefix) { - }, - processingInstruction:function(target, data) { - var ins = this.doc.createProcessingInstruction(target, data); - this.locator && position(this.locator,ins) - appendElement(this, ins); - }, - ignorableWhitespace:function(ch, start, length) { - }, - characters:function(chars, start, length) { - chars = _toString.apply(this,arguments) - //console.log(chars) - if(chars){ - if (this.cdata) { - var charNode = this.doc.createCDATASection(chars); - } else { - var charNode = this.doc.createTextNode(chars); - } - if(this.currentElement){ - this.currentElement.appendChild(charNode); - }else if(/^\s*$/.test(chars)){ - this.doc.appendChild(charNode); - //process xml - } - this.locator && position(this.locator,charNode) - } - }, - skippedEntity:function(name) { - }, - endDocument:function() { - this.doc.normalize(); - }, - setDocumentLocator:function (locator) { - if(this.locator = locator){// && !('lineNumber' in locator)){ - locator.lineNumber = 0; - } - }, - //LexicalHandler - comment:function(chars, start, length) { - chars = _toString.apply(this,arguments) - var comm = this.doc.createComment(chars); - this.locator && position(this.locator,comm) - appendElement(this, comm); - }, - - startCDATA:function() { - //used in characters() methods - this.cdata = true; - }, - endCDATA:function() { - this.cdata = false; - }, - - startDTD:function(name, publicId, systemId) { - var impl = this.doc.implementation; - if (impl && impl.createDocumentType) { - var dt = impl.createDocumentType(name, publicId, systemId); - this.locator && position(this.locator,dt) - appendElement(this, dt); - this.doc.doctype = dt; - } - }, - /** - * @see org.xml.sax.ErrorHandler - * @link http://www.saxproject.org/apidoc/org/xml/sax/ErrorHandler.html - */ - warning:function(error) { - console.warn('[xmldom warning]\t'+error,_locator(this.locator)); - }, - error:function(error) { - console.error('[xmldom error]\t'+error,_locator(this.locator)); - }, - fatalError:function(error) { - throw new ParseError(error, this.locator); - } -} -function _locator(l){ - if(l){ - return '\n@'+(l.systemId ||'')+'#[line:'+l.lineNumber+',col:'+l.columnNumber+']' - } -} -function _toString(chars,start,length){ - if(typeof chars == 'string'){ - return chars.substr(start,length) - }else{//java sax connect width xmldom on rhino(what about: "? && !(chars instanceof String)") - if(chars.length >= start+length || start){ - return new java.lang.String(chars,start,length)+''; - } - return chars; - } -} - -/* - * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/LexicalHandler.html - * used method of org.xml.sax.ext.LexicalHandler: - * #comment(chars, start, length) - * #startCDATA() - * #endCDATA() - * #startDTD(name, publicId, systemId) - * - * - * IGNORED method of org.xml.sax.ext.LexicalHandler: - * #endDTD() - * #startEntity(name) - * #endEntity(name) - * - * - * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/DeclHandler.html - * IGNORED method of org.xml.sax.ext.DeclHandler - * #attributeDecl(eName, aName, type, mode, value) - * #elementDecl(name, model) - * #externalEntityDecl(name, publicId, systemId) - * #internalEntityDecl(name, value) - * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/EntityResolver2.html - * IGNORED method of org.xml.sax.EntityResolver2 - * #resolveEntity(String name,String publicId,String baseURI,String systemId) - * #resolveEntity(publicId, systemId) - * #getExternalSubset(name, baseURI) - * @link http://www.saxproject.org/apidoc/org/xml/sax/DTDHandler.html - * IGNORED method of org.xml.sax.DTDHandler - * #notationDecl(name, publicId, systemId) {}; - * #unparsedEntityDecl(name, publicId, systemId, notationName) {}; - */ -"endDTD,startEntity,endEntity,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,resolveEntity,getExternalSubset,notationDecl,unparsedEntityDecl".replace(/\w+/g,function(key){ - DOMHandler.prototype[key] = function(){return null} -}) - -/* Private static helpers treated below as private instance methods, so don't need to add these to the public API; we might use a Relator to also get rid of non-standard public properties */ -function appendElement (hander,node) { - if (!hander.currentElement) { - hander.doc.appendChild(node); - } else { - hander.currentElement.appendChild(node); - } -}//appendChild and setAttributeNS are preformance key - -exports.__DOMHandler = DOMHandler; -exports.normalizeLineEndings = normalizeLineEndings; -exports.DOMParser = DOMParser; - - -/***/ }), - -/***/ "./node_modules/mpd-parser/node_modules/@xmldom/xmldom/lib/dom.js": -/*!************************************************************************!*\ - !*** ./node_modules/mpd-parser/node_modules/@xmldom/xmldom/lib/dom.js ***! - \************************************************************************/ -/***/ ((__unused_webpack_module, exports, __webpack_require__) => { - -var conventions = __webpack_require__(/*! ./conventions */ "./node_modules/mpd-parser/node_modules/@xmldom/xmldom/lib/conventions.js"); - -var find = conventions.find; -var NAMESPACE = conventions.NAMESPACE; - -/** - * A prerequisite for `[].filter`, to drop elements that are empty - * @param {string} input - * @returns {boolean} - */ -function notEmptyString (input) { - return input !== '' -} -/** - * @see https://infra.spec.whatwg.org/#split-on-ascii-whitespace - * @see https://infra.spec.whatwg.org/#ascii-whitespace - * - * @param {string} input - * @returns {string[]} (can be empty) - */ -function splitOnASCIIWhitespace(input) { - // U+0009 TAB, U+000A LF, U+000C FF, U+000D CR, U+0020 SPACE - return input ? input.split(/[\t\n\f\r ]+/).filter(notEmptyString) : [] -} - -/** - * Adds element as a key to current if it is not already present. - * - * @param {Record} current - * @param {string} element - * @returns {Record} - */ -function orderedSetReducer (current, element) { - if (!current.hasOwnProperty(element)) { - current[element] = true; - } - return current; -} - -/** - * @see https://infra.spec.whatwg.org/#ordered-set - * @param {string} input - * @returns {string[]} - */ -function toOrderedSet(input) { - if (!input) return []; - var list = splitOnASCIIWhitespace(input); - return Object.keys(list.reduce(orderedSetReducer, {})) -} - -/** - * Uses `list.indexOf` to implement something like `Array.prototype.includes`, - * which we can not rely on being available. - * - * @param {any[]} list - * @returns {function(any): boolean} - */ -function arrayIncludes (list) { - return function(element) { - return list && list.indexOf(element) !== -1; - } -} - -function copy(src,dest){ - for(var p in src){ - if (Object.prototype.hasOwnProperty.call(src, p)) { - dest[p] = src[p]; - } - } -} - -/** -^\w+\.prototype\.([_\w]+)\s*=\s*((?:.*\{\s*?[\r\n][\s\S]*?^})|\S.*?(?=[;\r\n]));? -^\w+\.prototype\.([_\w]+)\s*=\s*(\S.*?(?=[;\r\n]));? - */ -function _extends(Class,Super){ - var pt = Class.prototype; - if(!(pt instanceof Super)){ - function t(){}; - t.prototype = Super.prototype; - t = new t(); - copy(pt,t); - Class.prototype = pt = t; - } - if(pt.constructor != Class){ - if(typeof Class != 'function'){ - console.error("unknown Class:"+Class) - } - pt.constructor = Class - } -} - -// Node Types -var NodeType = {} -var ELEMENT_NODE = NodeType.ELEMENT_NODE = 1; -var ATTRIBUTE_NODE = NodeType.ATTRIBUTE_NODE = 2; -var TEXT_NODE = NodeType.TEXT_NODE = 3; -var CDATA_SECTION_NODE = NodeType.CDATA_SECTION_NODE = 4; -var ENTITY_REFERENCE_NODE = NodeType.ENTITY_REFERENCE_NODE = 5; -var ENTITY_NODE = NodeType.ENTITY_NODE = 6; -var PROCESSING_INSTRUCTION_NODE = NodeType.PROCESSING_INSTRUCTION_NODE = 7; -var COMMENT_NODE = NodeType.COMMENT_NODE = 8; -var DOCUMENT_NODE = NodeType.DOCUMENT_NODE = 9; -var DOCUMENT_TYPE_NODE = NodeType.DOCUMENT_TYPE_NODE = 10; -var DOCUMENT_FRAGMENT_NODE = NodeType.DOCUMENT_FRAGMENT_NODE = 11; -var NOTATION_NODE = NodeType.NOTATION_NODE = 12; - -// ExceptionCode -var ExceptionCode = {} -var ExceptionMessage = {}; -var INDEX_SIZE_ERR = ExceptionCode.INDEX_SIZE_ERR = ((ExceptionMessage[1]="Index size error"),1); -var DOMSTRING_SIZE_ERR = ExceptionCode.DOMSTRING_SIZE_ERR = ((ExceptionMessage[2]="DOMString size error"),2); -var HIERARCHY_REQUEST_ERR = ExceptionCode.HIERARCHY_REQUEST_ERR = ((ExceptionMessage[3]="Hierarchy request error"),3); -var WRONG_DOCUMENT_ERR = ExceptionCode.WRONG_DOCUMENT_ERR = ((ExceptionMessage[4]="Wrong document"),4); -var INVALID_CHARACTER_ERR = ExceptionCode.INVALID_CHARACTER_ERR = ((ExceptionMessage[5]="Invalid character"),5); -var NO_DATA_ALLOWED_ERR = ExceptionCode.NO_DATA_ALLOWED_ERR = ((ExceptionMessage[6]="No data allowed"),6); -var NO_MODIFICATION_ALLOWED_ERR = ExceptionCode.NO_MODIFICATION_ALLOWED_ERR = ((ExceptionMessage[7]="No modification allowed"),7); -var NOT_FOUND_ERR = ExceptionCode.NOT_FOUND_ERR = ((ExceptionMessage[8]="Not found"),8); -var NOT_SUPPORTED_ERR = ExceptionCode.NOT_SUPPORTED_ERR = ((ExceptionMessage[9]="Not supported"),9); -var INUSE_ATTRIBUTE_ERR = ExceptionCode.INUSE_ATTRIBUTE_ERR = ((ExceptionMessage[10]="Attribute in use"),10); -//level2 -var INVALID_STATE_ERR = ExceptionCode.INVALID_STATE_ERR = ((ExceptionMessage[11]="Invalid state"),11); -var SYNTAX_ERR = ExceptionCode.SYNTAX_ERR = ((ExceptionMessage[12]="Syntax error"),12); -var INVALID_MODIFICATION_ERR = ExceptionCode.INVALID_MODIFICATION_ERR = ((ExceptionMessage[13]="Invalid modification"),13); -var NAMESPACE_ERR = ExceptionCode.NAMESPACE_ERR = ((ExceptionMessage[14]="Invalid namespace"),14); -var INVALID_ACCESS_ERR = ExceptionCode.INVALID_ACCESS_ERR = ((ExceptionMessage[15]="Invalid access"),15); - -/** - * DOM Level 2 - * Object DOMException - * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/ecma-script-binding.html - * @see http://www.w3.org/TR/REC-DOM-Level-1/ecma-script-language-binding.html - */ -function DOMException(code, message) { - if(message instanceof Error){ - var error = message; - }else{ - error = this; - Error.call(this, ExceptionMessage[code]); - this.message = ExceptionMessage[code]; - if(Error.captureStackTrace) Error.captureStackTrace(this, DOMException); - } - error.code = code; - if(message) this.message = this.message + ": " + message; - return error; -}; -DOMException.prototype = Error.prototype; -copy(ExceptionCode,DOMException) - -/** - * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-536297177 - * The NodeList interface provides the abstraction of an ordered collection of nodes, without defining or constraining how this collection is implemented. NodeList objects in the DOM are live. - * The items in the NodeList are accessible via an integral index, starting from 0. - */ -function NodeList() { -}; -NodeList.prototype = { - /** - * The number of nodes in the list. The range of valid child node indices is 0 to length-1 inclusive. - * @standard level1 - */ - length:0, - /** - * Returns the indexth item in the collection. If index is greater than or equal to the number of nodes in the list, this returns null. - * @standard level1 - * @param index unsigned long - * Index into the collection. - * @return Node - * The node at the indexth position in the NodeList, or null if that is not a valid index. - */ - item: function(index) { - return index >= 0 && index < this.length ? this[index] : null; - }, - toString:function(isHTML,nodeFilter){ - for(var buf = [], i = 0;i=0){ - var lastIndex = list.length-1 - while(i0 || key == 'xmlns'){ -// return null; -// } - //console.log() - var i = this.length; - while(i--){ - var attr = this[i]; - //console.log(attr.nodeName,key) - if(attr.nodeName == key){ - return attr; - } - } - }, - setNamedItem: function(attr) { - var el = attr.ownerElement; - if(el && el!=this._ownerElement){ - throw new DOMException(INUSE_ATTRIBUTE_ERR); - } - var oldAttr = this.getNamedItem(attr.nodeName); - _addNamedNode(this._ownerElement,this,attr,oldAttr); - return oldAttr; - }, - /* returns Node */ - setNamedItemNS: function(attr) {// raises: WRONG_DOCUMENT_ERR,NO_MODIFICATION_ALLOWED_ERR,INUSE_ATTRIBUTE_ERR - var el = attr.ownerElement, oldAttr; - if(el && el!=this._ownerElement){ - throw new DOMException(INUSE_ATTRIBUTE_ERR); - } - oldAttr = this.getNamedItemNS(attr.namespaceURI,attr.localName); - _addNamedNode(this._ownerElement,this,attr,oldAttr); - return oldAttr; - }, - - /* returns Node */ - removeNamedItem: function(key) { - var attr = this.getNamedItem(key); - _removeNamedNode(this._ownerElement,this,attr); - return attr; - - - },// raises: NOT_FOUND_ERR,NO_MODIFICATION_ALLOWED_ERR - - //for level2 - removeNamedItemNS:function(namespaceURI,localName){ - var attr = this.getNamedItemNS(namespaceURI,localName); - _removeNamedNode(this._ownerElement,this,attr); - return attr; - }, - getNamedItemNS: function(namespaceURI, localName) { - var i = this.length; - while(i--){ - var node = this[i]; - if(node.localName == localName && node.namespaceURI == namespaceURI){ - return node; - } - } - return null; - } -}; - -/** - * The DOMImplementation interface represents an object providing methods - * which are not dependent on any particular document. - * Such an object is returned by the `Document.implementation` property. - * - * __The individual methods describe the differences compared to the specs.__ - * - * @constructor - * - * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation MDN - * @see https://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-102161490 DOM Level 1 Core (Initial) - * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#ID-102161490 DOM Level 2 Core - * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#ID-102161490 DOM Level 3 Core - * @see https://dom.spec.whatwg.org/#domimplementation DOM Living Standard - */ -function DOMImplementation() { -} - -DOMImplementation.prototype = { - /** - * The DOMImplementation.hasFeature() method returns a Boolean flag indicating if a given feature is supported. - * The different implementations fairly diverged in what kind of features were reported. - * The latest version of the spec settled to force this method to always return true, where the functionality was accurate and in use. - * - * @deprecated It is deprecated and modern browsers return true in all cases. - * - * @param {string} feature - * @param {string} [version] - * @returns {boolean} always true - * - * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/hasFeature MDN - * @see https://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-5CED94D7 DOM Level 1 Core - * @see https://dom.spec.whatwg.org/#dom-domimplementation-hasfeature DOM Living Standard - */ - hasFeature: function(feature, version) { - return true; - }, - /** - * Creates an XML Document object of the specified type with its document element. - * - * __It behaves slightly different from the description in the living standard__: - * - There is no interface/class `XMLDocument`, it returns a `Document` instance. - * - `contentType`, `encoding`, `mode`, `origin`, `url` fields are currently not declared. - * - this implementation is not validating names or qualified names - * (when parsing XML strings, the SAX parser takes care of that) - * - * @param {string|null} namespaceURI - * @param {string} qualifiedName - * @param {DocumentType=null} doctype - * @returns {Document} - * - * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/createDocument MDN - * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#Level-2-Core-DOM-createDocument DOM Level 2 Core (initial) - * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocument DOM Level 2 Core - * - * @see https://dom.spec.whatwg.org/#validate-and-extract DOM: Validate and extract - * @see https://www.w3.org/TR/xml/#NT-NameStartChar XML Spec: Names - * @see https://www.w3.org/TR/xml-names/#ns-qualnames XML Namespaces: Qualified names - */ - createDocument: function(namespaceURI, qualifiedName, doctype){ - var doc = new Document(); - doc.implementation = this; - doc.childNodes = new NodeList(); - doc.doctype = doctype || null; - if (doctype){ - doc.appendChild(doctype); - } - if (qualifiedName){ - var root = doc.createElementNS(namespaceURI, qualifiedName); - doc.appendChild(root); - } - return doc; - }, - /** - * Returns a doctype, with the given `qualifiedName`, `publicId`, and `systemId`. - * - * __This behavior is slightly different from the in the specs__: - * - this implementation is not validating names or qualified names - * (when parsing XML strings, the SAX parser takes care of that) - * - * @param {string} qualifiedName - * @param {string} [publicId] - * @param {string} [systemId] - * @returns {DocumentType} which can either be used with `DOMImplementation.createDocument` upon document creation - * or can be put into the document via methods like `Node.insertBefore()` or `Node.replaceChild()` - * - * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/createDocumentType MDN - * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#Level-2-Core-DOM-createDocType DOM Level 2 Core - * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocumenttype DOM Living Standard - * - * @see https://dom.spec.whatwg.org/#validate-and-extract DOM: Validate and extract - * @see https://www.w3.org/TR/xml/#NT-NameStartChar XML Spec: Names - * @see https://www.w3.org/TR/xml-names/#ns-qualnames XML Namespaces: Qualified names - */ - createDocumentType: function(qualifiedName, publicId, systemId){ - var node = new DocumentType(); - node.name = qualifiedName; - node.nodeName = qualifiedName; - node.publicId = publicId || ''; - node.systemId = systemId || ''; - - return node; - } -}; - - -/** - * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-1950641247 - */ - -function Node() { -}; - -Node.prototype = { - firstChild : null, - lastChild : null, - previousSibling : null, - nextSibling : null, - attributes : null, - parentNode : null, - childNodes : null, - ownerDocument : null, - nodeValue : null, - namespaceURI : null, - prefix : null, - localName : null, - // Modified in DOM Level 2: - insertBefore:function(newChild, refChild){//raises - return _insertBefore(this,newChild,refChild); - }, - replaceChild:function(newChild, oldChild){//raises - _insertBefore(this, newChild,oldChild, assertPreReplacementValidityInDocument); - if(oldChild){ - this.removeChild(oldChild); - } - }, - removeChild:function(oldChild){ - return _removeChild(this,oldChild); - }, - appendChild:function(newChild){ - return this.insertBefore(newChild,null); - }, - hasChildNodes:function(){ - return this.firstChild != null; - }, - cloneNode:function(deep){ - return cloneNode(this.ownerDocument||this,this,deep); - }, - // Modified in DOM Level 2: - normalize:function(){ - var child = this.firstChild; - while(child){ - var next = child.nextSibling; - if(next && next.nodeType == TEXT_NODE && child.nodeType == TEXT_NODE){ - this.removeChild(next); - child.appendData(next.data); - }else{ - child.normalize(); - child = next; - } - } - }, - // Introduced in DOM Level 2: - isSupported:function(feature, version){ - return this.ownerDocument.implementation.hasFeature(feature,version); - }, - // Introduced in DOM Level 2: - hasAttributes:function(){ - return this.attributes.length>0; - }, - /** - * Look up the prefix associated to the given namespace URI, starting from this node. - * **The default namespace declarations are ignored by this method.** - * See Namespace Prefix Lookup for details on the algorithm used by this method. - * - * _Note: The implementation seems to be incomplete when compared to the algorithm described in the specs._ - * - * @param {string | null} namespaceURI - * @returns {string | null} - * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#Node3-lookupNamespacePrefix - * @see https://www.w3.org/TR/DOM-Level-3-Core/namespaces-algorithms.html#lookupNamespacePrefixAlgo - * @see https://dom.spec.whatwg.org/#dom-node-lookupprefix - * @see https://github.com/xmldom/xmldom/issues/322 - */ - lookupPrefix:function(namespaceURI){ - var el = this; - while(el){ - var map = el._nsMap; - //console.dir(map) - if(map){ - for(var n in map){ - if (Object.prototype.hasOwnProperty.call(map, n) && map[n] === namespaceURI) { - return n; - } - } - } - el = el.nodeType == ATTRIBUTE_NODE?el.ownerDocument : el.parentNode; - } - return null; - }, - // Introduced in DOM Level 3: - lookupNamespaceURI:function(prefix){ - var el = this; - while(el){ - var map = el._nsMap; - //console.dir(map) - if(map){ - if(Object.prototype.hasOwnProperty.call(map, prefix)){ - return map[prefix] ; - } - } - el = el.nodeType == ATTRIBUTE_NODE?el.ownerDocument : el.parentNode; - } - return null; - }, - // Introduced in DOM Level 3: - isDefaultNamespace:function(namespaceURI){ - var prefix = this.lookupPrefix(namespaceURI); - return prefix == null; - } -}; - - -function _xmlEncoder(c){ - return c == '<' && '<' || - c == '>' && '>' || - c == '&' && '&' || - c == '"' && '"' || - '&#'+c.charCodeAt()+';' -} - - -copy(NodeType,Node); -copy(NodeType,Node.prototype); - -/** - * @param callback return true for continue,false for break - * @return boolean true: break visit; - */ -function _visitNode(node,callback){ - if(callback(node)){ - return true; - } - if(node = node.firstChild){ - do{ - if(_visitNode(node,callback)){return true} - }while(node=node.nextSibling) - } -} - - - -function Document(){ - this.ownerDocument = this; -} - -function _onAddAttribute(doc,el,newAttr){ - doc && doc._inc++; - var ns = newAttr.namespaceURI ; - if(ns === NAMESPACE.XMLNS){ - //update namespace - el._nsMap[newAttr.prefix?newAttr.localName:''] = newAttr.value - } -} - -function _onRemoveAttribute(doc,el,newAttr,remove){ - doc && doc._inc++; - var ns = newAttr.namespaceURI ; - if(ns === NAMESPACE.XMLNS){ - //update namespace - delete el._nsMap[newAttr.prefix?newAttr.localName:''] - } -} - -/** - * Updates `el.childNodes`, updating the indexed items and it's `length`. - * Passing `newChild` means it will be appended. - * Otherwise it's assumed that an item has been removed, - * and `el.firstNode` and it's `.nextSibling` are used - * to walk the current list of child nodes. - * - * @param {Document} doc - * @param {Node} el - * @param {Node} [newChild] - * @private - */ -function _onUpdateChild (doc, el, newChild) { - if(doc && doc._inc){ - doc._inc++; - //update childNodes - var cs = el.childNodes; - if (newChild) { - cs[cs.length++] = newChild; - } else { - var child = el.firstChild; - var i = 0; - while (child) { - cs[i++] = child; - child = child.nextSibling; - } - cs.length = i; - delete cs[cs.length]; - } - } -} - -/** - * Removes the connections between `parentNode` and `child` - * and any existing `child.previousSibling` or `child.nextSibling`. - * - * @see https://github.com/xmldom/xmldom/issues/135 - * @see https://github.com/xmldom/xmldom/issues/145 - * - * @param {Node} parentNode - * @param {Node} child - * @returns {Node} the child that was removed. - * @private - */ -function _removeChild (parentNode, child) { - var previous = child.previousSibling; - var next = child.nextSibling; - if (previous) { - previous.nextSibling = next; - } else { - parentNode.firstChild = next; - } - if (next) { - next.previousSibling = previous; - } else { - parentNode.lastChild = previous; - } - child.parentNode = null; - child.previousSibling = null; - child.nextSibling = null; - _onUpdateChild(parentNode.ownerDocument, parentNode); - return child; -} - -/** - * Returns `true` if `node` can be a parent for insertion. - * @param {Node} node - * @returns {boolean} - */ -function hasValidParentNodeType(node) { - return ( - node && - (node.nodeType === Node.DOCUMENT_NODE || node.nodeType === Node.DOCUMENT_FRAGMENT_NODE || node.nodeType === Node.ELEMENT_NODE) - ); -} - -/** - * Returns `true` if `node` can be inserted according to it's `nodeType`. - * @param {Node} node - * @returns {boolean} - */ -function hasInsertableNodeType(node) { - return ( - node && - (isElementNode(node) || - isTextNode(node) || - isDocTypeNode(node) || - node.nodeType === Node.DOCUMENT_FRAGMENT_NODE || - node.nodeType === Node.COMMENT_NODE || - node.nodeType === Node.PROCESSING_INSTRUCTION_NODE) - ); -} - -/** - * Returns true if `node` is a DOCTYPE node - * @param {Node} node - * @returns {boolean} - */ -function isDocTypeNode(node) { - return node && node.nodeType === Node.DOCUMENT_TYPE_NODE; -} - -/** - * Returns true if the node is an element - * @param {Node} node - * @returns {boolean} - */ -function isElementNode(node) { - return node && node.nodeType === Node.ELEMENT_NODE; -} -/** - * Returns true if `node` is a text node - * @param {Node} node - * @returns {boolean} - */ -function isTextNode(node) { - return node && node.nodeType === Node.TEXT_NODE; -} - -/** - * Check if en element node can be inserted before `child`, or at the end if child is falsy, - * according to the presence and position of a doctype node on the same level. - * - * @param {Document} doc The document node - * @param {Node} child the node that would become the nextSibling if the element would be inserted - * @returns {boolean} `true` if an element can be inserted before child - * @private - * https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity - */ -function isElementInsertionPossible(doc, child) { - var parentChildNodes = doc.childNodes || []; - if (find(parentChildNodes, isElementNode) || isDocTypeNode(child)) { - return false; - } - var docTypeNode = find(parentChildNodes, isDocTypeNode); - return !(child && docTypeNode && parentChildNodes.indexOf(docTypeNode) > parentChildNodes.indexOf(child)); -} - -/** - * Check if en element node can be inserted before `child`, or at the end if child is falsy, - * according to the presence and position of a doctype node on the same level. - * - * @param {Node} doc The document node - * @param {Node} child the node that would become the nextSibling if the element would be inserted - * @returns {boolean} `true` if an element can be inserted before child - * @private - * https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity - */ -function isElementReplacementPossible(doc, child) { - var parentChildNodes = doc.childNodes || []; - - function hasElementChildThatIsNotChild(node) { - return isElementNode(node) && node !== child; - } - - if (find(parentChildNodes, hasElementChildThatIsNotChild)) { - return false; - } - var docTypeNode = find(parentChildNodes, isDocTypeNode); - return !(child && docTypeNode && parentChildNodes.indexOf(docTypeNode) > parentChildNodes.indexOf(child)); -} - -/** - * @private - * Steps 1-5 of the checks before inserting and before replacing a child are the same. - * - * @param {Node} parent the parent node to insert `node` into - * @param {Node} node the node to insert - * @param {Node=} child the node that should become the `nextSibling` of `node` - * @returns {Node} - * @throws DOMException for several node combinations that would create a DOM that is not well-formed. - * @throws DOMException if `child` is provided but is not a child of `parent`. - * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity - * @see https://dom.spec.whatwg.org/#concept-node-replace - */ -function assertPreInsertionValidity1to5(parent, node, child) { - // 1. If `parent` is not a Document, DocumentFragment, or Element node, then throw a "HierarchyRequestError" DOMException. - if (!hasValidParentNodeType(parent)) { - throw new DOMException(HIERARCHY_REQUEST_ERR, 'Unexpected parent node type ' + parent.nodeType); - } - // 2. If `node` is a host-including inclusive ancestor of `parent`, then throw a "HierarchyRequestError" DOMException. - // not implemented! - // 3. If `child` is non-null and its parent is not `parent`, then throw a "NotFoundError" DOMException. - if (child && child.parentNode !== parent) { - throw new DOMException(NOT_FOUND_ERR, 'child not in parent'); - } - if ( - // 4. If `node` is not a DocumentFragment, DocumentType, Element, or CharacterData node, then throw a "HierarchyRequestError" DOMException. - !hasInsertableNodeType(node) || - // 5. If either `node` is a Text node and `parent` is a document, - // the sax parser currently adds top level text nodes, this will be fixed in 0.9.0 - // || (node.nodeType === Node.TEXT_NODE && parent.nodeType === Node.DOCUMENT_NODE) - // or `node` is a doctype and `parent` is not a document, then throw a "HierarchyRequestError" DOMException. - (isDocTypeNode(node) && parent.nodeType !== Node.DOCUMENT_NODE) - ) { - throw new DOMException( - HIERARCHY_REQUEST_ERR, - 'Unexpected node type ' + node.nodeType + ' for parent node type ' + parent.nodeType - ); - } -} - -/** - * @private - * Step 6 of the checks before inserting and before replacing a child are different. - * - * @param {Document} parent the parent node to insert `node` into - * @param {Node} node the node to insert - * @param {Node | undefined} child the node that should become the `nextSibling` of `node` - * @returns {Node} - * @throws DOMException for several node combinations that would create a DOM that is not well-formed. - * @throws DOMException if `child` is provided but is not a child of `parent`. - * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity - * @see https://dom.spec.whatwg.org/#concept-node-replace - */ -function assertPreInsertionValidityInDocument(parent, node, child) { - var parentChildNodes = parent.childNodes || []; - var nodeChildNodes = node.childNodes || []; - - // DocumentFragment - if (node.nodeType === Node.DOCUMENT_FRAGMENT_NODE) { - var nodeChildElements = nodeChildNodes.filter(isElementNode); - // If node has more than one element child or has a Text node child. - if (nodeChildElements.length > 1 || find(nodeChildNodes, isTextNode)) { - throw new DOMException(HIERARCHY_REQUEST_ERR, 'More than one element or text in fragment'); - } - // Otherwise, if `node` has one element child and either `parent` has an element child, - // `child` is a doctype, or `child` is non-null and a doctype is following `child`. - if (nodeChildElements.length === 1 && !isElementInsertionPossible(parent, child)) { - throw new DOMException(HIERARCHY_REQUEST_ERR, 'Element in fragment can not be inserted before doctype'); - } - } - // Element - if (isElementNode(node)) { - // `parent` has an element child, `child` is a doctype, - // or `child` is non-null and a doctype is following `child`. - if (!isElementInsertionPossible(parent, child)) { - throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one element can be added and only after doctype'); - } - } - // DocumentType - if (isDocTypeNode(node)) { - // `parent` has a doctype child, - if (find(parentChildNodes, isDocTypeNode)) { - throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one doctype is allowed'); - } - var parentElementChild = find(parentChildNodes, isElementNode); - // `child` is non-null and an element is preceding `child`, - if (child && parentChildNodes.indexOf(parentElementChild) < parentChildNodes.indexOf(child)) { - throw new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can only be inserted before an element'); - } - // or `child` is null and `parent` has an element child. - if (!child && parentElementChild) { - throw new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can not be appended since element is present'); - } - } -} - -/** - * @private - * Step 6 of the checks before inserting and before replacing a child are different. - * - * @param {Document} parent the parent node to insert `node` into - * @param {Node} node the node to insert - * @param {Node | undefined} child the node that should become the `nextSibling` of `node` - * @returns {Node} - * @throws DOMException for several node combinations that would create a DOM that is not well-formed. - * @throws DOMException if `child` is provided but is not a child of `parent`. - * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity - * @see https://dom.spec.whatwg.org/#concept-node-replace - */ -function assertPreReplacementValidityInDocument(parent, node, child) { - var parentChildNodes = parent.childNodes || []; - var nodeChildNodes = node.childNodes || []; - - // DocumentFragment - if (node.nodeType === Node.DOCUMENT_FRAGMENT_NODE) { - var nodeChildElements = nodeChildNodes.filter(isElementNode); - // If `node` has more than one element child or has a Text node child. - if (nodeChildElements.length > 1 || find(nodeChildNodes, isTextNode)) { - throw new DOMException(HIERARCHY_REQUEST_ERR, 'More than one element or text in fragment'); - } - // Otherwise, if `node` has one element child and either `parent` has an element child that is not `child` or a doctype is following `child`. - if (nodeChildElements.length === 1 && !isElementReplacementPossible(parent, child)) { - throw new DOMException(HIERARCHY_REQUEST_ERR, 'Element in fragment can not be inserted before doctype'); - } - } - // Element - if (isElementNode(node)) { - // `parent` has an element child that is not `child` or a doctype is following `child`. - if (!isElementReplacementPossible(parent, child)) { - throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one element can be added and only after doctype'); - } - } - // DocumentType - if (isDocTypeNode(node)) { - function hasDoctypeChildThatIsNotChild(node) { - return isDocTypeNode(node) && node !== child; - } - - // `parent` has a doctype child that is not `child`, - if (find(parentChildNodes, hasDoctypeChildThatIsNotChild)) { - throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one doctype is allowed'); - } - var parentElementChild = find(parentChildNodes, isElementNode); - // or an element is preceding `child`. - if (child && parentChildNodes.indexOf(parentElementChild) < parentChildNodes.indexOf(child)) { - throw new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can only be inserted before an element'); - } - } -} - -/** - * @private - * @param {Node} parent the parent node to insert `node` into - * @param {Node} node the node to insert - * @param {Node=} child the node that should become the `nextSibling` of `node` - * @returns {Node} - * @throws DOMException for several node combinations that would create a DOM that is not well-formed. - * @throws DOMException if `child` is provided but is not a child of `parent`. - * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity - */ -function _insertBefore(parent, node, child, _inDocumentAssertion) { - // To ensure pre-insertion validity of a node into a parent before a child, run these steps: - assertPreInsertionValidity1to5(parent, node, child); - - // If parent is a document, and any of the statements below, switched on the interface node implements, - // are true, then throw a "HierarchyRequestError" DOMException. - if (parent.nodeType === Node.DOCUMENT_NODE) { - (_inDocumentAssertion || assertPreInsertionValidityInDocument)(parent, node, child); - } - - var cp = node.parentNode; - if(cp){ - cp.removeChild(node);//remove and update - } - if(node.nodeType === DOCUMENT_FRAGMENT_NODE){ - var newFirst = node.firstChild; - if (newFirst == null) { - return node; - } - var newLast = node.lastChild; - }else{ - newFirst = newLast = node; - } - var pre = child ? child.previousSibling : parent.lastChild; - - newFirst.previousSibling = pre; - newLast.nextSibling = child; - - - if(pre){ - pre.nextSibling = newFirst; - }else{ - parent.firstChild = newFirst; - } - if(child == null){ - parent.lastChild = newLast; - }else{ - child.previousSibling = newLast; - } - do{ - newFirst.parentNode = parent; - }while(newFirst !== newLast && (newFirst= newFirst.nextSibling)) - _onUpdateChild(parent.ownerDocument||parent, parent); - //console.log(parent.lastChild.nextSibling == null) - if (node.nodeType == DOCUMENT_FRAGMENT_NODE) { - node.firstChild = node.lastChild = null; - } - return node; -} - -/** - * Appends `newChild` to `parentNode`. - * If `newChild` is already connected to a `parentNode` it is first removed from it. - * - * @see https://github.com/xmldom/xmldom/issues/135 - * @see https://github.com/xmldom/xmldom/issues/145 - * @param {Node} parentNode - * @param {Node} newChild - * @returns {Node} - * @private - */ -function _appendSingleChild (parentNode, newChild) { - if (newChild.parentNode) { - newChild.parentNode.removeChild(newChild); - } - newChild.parentNode = parentNode; - newChild.previousSibling = parentNode.lastChild; - newChild.nextSibling = null; - if (newChild.previousSibling) { - newChild.previousSibling.nextSibling = newChild; - } else { - parentNode.firstChild = newChild; - } - parentNode.lastChild = newChild; - _onUpdateChild(parentNode.ownerDocument, parentNode, newChild); - return newChild; -} - -Document.prototype = { - //implementation : null, - nodeName : '#document', - nodeType : DOCUMENT_NODE, - /** - * The DocumentType node of the document. - * - * @readonly - * @type DocumentType - */ - doctype : null, - documentElement : null, - _inc : 1, - - insertBefore : function(newChild, refChild){//raises - if(newChild.nodeType == DOCUMENT_FRAGMENT_NODE){ - var child = newChild.firstChild; - while(child){ - var next = child.nextSibling; - this.insertBefore(child,refChild); - child = next; - } - return newChild; - } - _insertBefore(this, newChild, refChild); - newChild.ownerDocument = this; - if (this.documentElement === null && newChild.nodeType === ELEMENT_NODE) { - this.documentElement = newChild; - } - - return newChild; - }, - removeChild : function(oldChild){ - if(this.documentElement == oldChild){ - this.documentElement = null; - } - return _removeChild(this,oldChild); - }, - replaceChild: function (newChild, oldChild) { - //raises - _insertBefore(this, newChild, oldChild, assertPreReplacementValidityInDocument); - newChild.ownerDocument = this; - if (oldChild) { - this.removeChild(oldChild); - } - if (isElementNode(newChild)) { - this.documentElement = newChild; - } - }, - // Introduced in DOM Level 2: - importNode : function(importedNode,deep){ - return importNode(this,importedNode,deep); - }, - // Introduced in DOM Level 2: - getElementById : function(id){ - var rtv = null; - _visitNode(this.documentElement,function(node){ - if(node.nodeType == ELEMENT_NODE){ - if(node.getAttribute('id') == id){ - rtv = node; - return true; - } - } - }) - return rtv; - }, - - /** - * The `getElementsByClassName` method of `Document` interface returns an array-like object - * of all child elements which have **all** of the given class name(s). - * - * Returns an empty list if `classeNames` is an empty string or only contains HTML white space characters. - * - * - * Warning: This is a live LiveNodeList. - * Changes in the DOM will reflect in the array as the changes occur. - * If an element selected by this array no longer qualifies for the selector, - * it will automatically be removed. Be aware of this for iteration purposes. - * - * @param {string} classNames is a string representing the class name(s) to match; multiple class names are separated by (ASCII-)whitespace - * - * @see https://developer.mozilla.org/en-US/docs/Web/API/Document/getElementsByClassName - * @see https://dom.spec.whatwg.org/#concept-getelementsbyclassname - */ - getElementsByClassName: function(classNames) { - var classNamesSet = toOrderedSet(classNames) - return new LiveNodeList(this, function(base) { - var ls = []; - if (classNamesSet.length > 0) { - _visitNode(base.documentElement, function(node) { - if(node !== base && node.nodeType === ELEMENT_NODE) { - var nodeClassNames = node.getAttribute('class') - // can be null if the attribute does not exist - if (nodeClassNames) { - // before splitting and iterating just compare them for the most common case - var matches = classNames === nodeClassNames; - if (!matches) { - var nodeClassNamesSet = toOrderedSet(nodeClassNames) - matches = classNamesSet.every(arrayIncludes(nodeClassNamesSet)) - } - if(matches) { - ls.push(node); - } - } - } - }); - } - return ls; - }); - }, - - //document factory method: - createElement : function(tagName){ - var node = new Element(); - node.ownerDocument = this; - node.nodeName = tagName; - node.tagName = tagName; - node.localName = tagName; - node.childNodes = new NodeList(); - var attrs = node.attributes = new NamedNodeMap(); - attrs._ownerElement = node; - return node; - }, - createDocumentFragment : function(){ - var node = new DocumentFragment(); - node.ownerDocument = this; - node.childNodes = new NodeList(); - return node; - }, - createTextNode : function(data){ - var node = new Text(); - node.ownerDocument = this; - node.appendData(data) - return node; - }, - createComment : function(data){ - var node = new Comment(); - node.ownerDocument = this; - node.appendData(data) - return node; - }, - createCDATASection : function(data){ - var node = new CDATASection(); - node.ownerDocument = this; - node.appendData(data) - return node; - }, - createProcessingInstruction : function(target,data){ - var node = new ProcessingInstruction(); - node.ownerDocument = this; - node.tagName = node.nodeName = node.target = target; - node.nodeValue = node.data = data; - return node; - }, - createAttribute : function(name){ - var node = new Attr(); - node.ownerDocument = this; - node.name = name; - node.nodeName = name; - node.localName = name; - node.specified = true; - return node; - }, - createEntityReference : function(name){ - var node = new EntityReference(); - node.ownerDocument = this; - node.nodeName = name; - return node; - }, - // Introduced in DOM Level 2: - createElementNS : function(namespaceURI,qualifiedName){ - var node = new Element(); - var pl = qualifiedName.split(':'); - var attrs = node.attributes = new NamedNodeMap(); - node.childNodes = new NodeList(); - node.ownerDocument = this; - node.nodeName = qualifiedName; - node.tagName = qualifiedName; - node.namespaceURI = namespaceURI; - if(pl.length == 2){ - node.prefix = pl[0]; - node.localName = pl[1]; - }else{ - //el.prefix = null; - node.localName = qualifiedName; - } - attrs._ownerElement = node; - return node; - }, - // Introduced in DOM Level 2: - createAttributeNS : function(namespaceURI,qualifiedName){ - var node = new Attr(); - var pl = qualifiedName.split(':'); - node.ownerDocument = this; - node.nodeName = qualifiedName; - node.name = qualifiedName; - node.namespaceURI = namespaceURI; - node.specified = true; - if(pl.length == 2){ - node.prefix = pl[0]; - node.localName = pl[1]; - }else{ - //el.prefix = null; - node.localName = qualifiedName; - } - return node; - } -}; -_extends(Document,Node); - - -function Element() { - this._nsMap = {}; -}; -Element.prototype = { - nodeType : ELEMENT_NODE, - hasAttribute : function(name){ - return this.getAttributeNode(name)!=null; - }, - getAttribute : function(name){ - var attr = this.getAttributeNode(name); - return attr && attr.value || ''; - }, - getAttributeNode : function(name){ - return this.attributes.getNamedItem(name); - }, - setAttribute : function(name, value){ - var attr = this.ownerDocument.createAttribute(name); - attr.value = attr.nodeValue = "" + value; - this.setAttributeNode(attr) - }, - removeAttribute : function(name){ - var attr = this.getAttributeNode(name) - attr && this.removeAttributeNode(attr); - }, - - //four real opeartion method - appendChild:function(newChild){ - if(newChild.nodeType === DOCUMENT_FRAGMENT_NODE){ - return this.insertBefore(newChild,null); - }else{ - return _appendSingleChild(this,newChild); - } - }, - setAttributeNode : function(newAttr){ - return this.attributes.setNamedItem(newAttr); - }, - setAttributeNodeNS : function(newAttr){ - return this.attributes.setNamedItemNS(newAttr); - }, - removeAttributeNode : function(oldAttr){ - //console.log(this == oldAttr.ownerElement) - return this.attributes.removeNamedItem(oldAttr.nodeName); - }, - //get real attribute name,and remove it by removeAttributeNode - removeAttributeNS : function(namespaceURI, localName){ - var old = this.getAttributeNodeNS(namespaceURI, localName); - old && this.removeAttributeNode(old); - }, - - hasAttributeNS : function(namespaceURI, localName){ - return this.getAttributeNodeNS(namespaceURI, localName)!=null; - }, - getAttributeNS : function(namespaceURI, localName){ - var attr = this.getAttributeNodeNS(namespaceURI, localName); - return attr && attr.value || ''; - }, - setAttributeNS : function(namespaceURI, qualifiedName, value){ - var attr = this.ownerDocument.createAttributeNS(namespaceURI, qualifiedName); - attr.value = attr.nodeValue = "" + value; - this.setAttributeNode(attr) - }, - getAttributeNodeNS : function(namespaceURI, localName){ - return this.attributes.getNamedItemNS(namespaceURI, localName); - }, - - getElementsByTagName : function(tagName){ - return new LiveNodeList(this,function(base){ - var ls = []; - _visitNode(base,function(node){ - if(node !== base && node.nodeType == ELEMENT_NODE && (tagName === '*' || node.tagName == tagName)){ - ls.push(node); - } - }); - return ls; - }); - }, - getElementsByTagNameNS : function(namespaceURI, localName){ - return new LiveNodeList(this,function(base){ - var ls = []; - _visitNode(base,function(node){ - if(node !== base && node.nodeType === ELEMENT_NODE && (namespaceURI === '*' || node.namespaceURI === namespaceURI) && (localName === '*' || node.localName == localName)){ - ls.push(node); - } - }); - return ls; - - }); - } -}; -Document.prototype.getElementsByTagName = Element.prototype.getElementsByTagName; -Document.prototype.getElementsByTagNameNS = Element.prototype.getElementsByTagNameNS; - - -_extends(Element,Node); -function Attr() { -}; -Attr.prototype.nodeType = ATTRIBUTE_NODE; -_extends(Attr,Node); - - -function CharacterData() { -}; -CharacterData.prototype = { - data : '', - substringData : function(offset, count) { - return this.data.substring(offset, offset+count); - }, - appendData: function(text) { - text = this.data+text; - this.nodeValue = this.data = text; - this.length = text.length; - }, - insertData: function(offset,text) { - this.replaceData(offset,0,text); - - }, - appendChild:function(newChild){ - throw new Error(ExceptionMessage[HIERARCHY_REQUEST_ERR]) - }, - deleteData: function(offset, count) { - this.replaceData(offset,count,""); - }, - replaceData: function(offset, count, text) { - var start = this.data.substring(0,offset); - var end = this.data.substring(offset+count); - text = start + text + end; - this.nodeValue = this.data = text; - this.length = text.length; - } -} -_extends(CharacterData,Node); -function Text() { -}; -Text.prototype = { - nodeName : "#text", - nodeType : TEXT_NODE, - splitText : function(offset) { - var text = this.data; - var newText = text.substring(offset); - text = text.substring(0, offset); - this.data = this.nodeValue = text; - this.length = text.length; - var newNode = this.ownerDocument.createTextNode(newText); - if(this.parentNode){ - this.parentNode.insertBefore(newNode, this.nextSibling); - } - return newNode; - } -} -_extends(Text,CharacterData); -function Comment() { -}; -Comment.prototype = { - nodeName : "#comment", - nodeType : COMMENT_NODE -} -_extends(Comment,CharacterData); - -function CDATASection() { -}; -CDATASection.prototype = { - nodeName : "#cdata-section", - nodeType : CDATA_SECTION_NODE -} -_extends(CDATASection,CharacterData); - - -function DocumentType() { -}; -DocumentType.prototype.nodeType = DOCUMENT_TYPE_NODE; -_extends(DocumentType,Node); - -function Notation() { -}; -Notation.prototype.nodeType = NOTATION_NODE; -_extends(Notation,Node); - -function Entity() { -}; -Entity.prototype.nodeType = ENTITY_NODE; -_extends(Entity,Node); - -function EntityReference() { -}; -EntityReference.prototype.nodeType = ENTITY_REFERENCE_NODE; -_extends(EntityReference,Node); - -function DocumentFragment() { -}; -DocumentFragment.prototype.nodeName = "#document-fragment"; -DocumentFragment.prototype.nodeType = DOCUMENT_FRAGMENT_NODE; -_extends(DocumentFragment,Node); - - -function ProcessingInstruction() { -} -ProcessingInstruction.prototype.nodeType = PROCESSING_INSTRUCTION_NODE; -_extends(ProcessingInstruction,Node); -function XMLSerializer(){} -XMLSerializer.prototype.serializeToString = function(node,isHtml,nodeFilter){ - return nodeSerializeToString.call(node,isHtml,nodeFilter); -} -Node.prototype.toString = nodeSerializeToString; -function nodeSerializeToString(isHtml,nodeFilter){ - var buf = []; - var refNode = this.nodeType == 9 && this.documentElement || this; - var prefix = refNode.prefix; - var uri = refNode.namespaceURI; - - if(uri && prefix == null){ - //console.log(prefix) - var prefix = refNode.lookupPrefix(uri); - if(prefix == null){ - //isHTML = true; - var visibleNamespaces=[ - {namespace:uri,prefix:null} - //{namespace:uri,prefix:''} - ] - } - } - serializeToString(this,buf,isHtml,nodeFilter,visibleNamespaces); - //console.log('###',this.nodeType,uri,prefix,buf.join('')) - return buf.join(''); -} - -function needNamespaceDefine(node, isHTML, visibleNamespaces) { - var prefix = node.prefix || ''; - var uri = node.namespaceURI; - // According to [Namespaces in XML 1.0](https://www.w3.org/TR/REC-xml-names/#ns-using) , - // and more specifically https://www.w3.org/TR/REC-xml-names/#nsc-NoPrefixUndecl : - // > In a namespace declaration for a prefix [...], the attribute value MUST NOT be empty. - // in a similar manner [Namespaces in XML 1.1](https://www.w3.org/TR/xml-names11/#ns-using) - // and more specifically https://www.w3.org/TR/xml-names11/#nsc-NSDeclared : - // > [...] Furthermore, the attribute value [...] must not be an empty string. - // so serializing empty namespace value like xmlns:ds="" would produce an invalid XML document. - if (!uri) { - return false; - } - if (prefix === "xml" && uri === NAMESPACE.XML || uri === NAMESPACE.XMLNS) { - return false; - } - - var i = visibleNamespaces.length - while (i--) { - var ns = visibleNamespaces[i]; - // get namespace prefix - if (ns.prefix === prefix) { - return ns.namespace !== uri; - } - } - return true; -} -/** - * Well-formed constraint: No < in Attribute Values - * > The replacement text of any entity referred to directly or indirectly - * > in an attribute value must not contain a <. - * @see https://www.w3.org/TR/xml11/#CleanAttrVals - * @see https://www.w3.org/TR/xml11/#NT-AttValue - * - * Literal whitespace other than space that appear in attribute values - * are serialized as their entity references, so they will be preserved. - * (In contrast to whitespace literals in the input which are normalized to spaces) - * @see https://www.w3.org/TR/xml11/#AVNormalize - * @see https://w3c.github.io/DOM-Parsing/#serializing-an-element-s-attributes - */ -function addSerializedAttribute(buf, qualifiedName, value) { - buf.push(' ', qualifiedName, '="', value.replace(/[<>&"\t\n\r]/g, _xmlEncoder), '"') -} - -function serializeToString(node,buf,isHTML,nodeFilter,visibleNamespaces){ - if (!visibleNamespaces) { - visibleNamespaces = []; - } - - if(nodeFilter){ - node = nodeFilter(node); - if(node){ - if(typeof node == 'string'){ - buf.push(node); - return; - } - }else{ - return; - } - //buf.sort.apply(attrs, attributeSorter); - } - - switch(node.nodeType){ - case ELEMENT_NODE: - var attrs = node.attributes; - var len = attrs.length; - var child = node.firstChild; - var nodeName = node.tagName; - - isHTML = NAMESPACE.isHTML(node.namespaceURI) || isHTML - - var prefixedNodeName = nodeName - if (!isHTML && !node.prefix && node.namespaceURI) { - var defaultNS - // lookup current default ns from `xmlns` attribute - for (var ai = 0; ai < attrs.length; ai++) { - if (attrs.item(ai).name === 'xmlns') { - defaultNS = attrs.item(ai).value - break - } - } - if (!defaultNS) { - // lookup current default ns in visibleNamespaces - for (var nsi = visibleNamespaces.length - 1; nsi >= 0; nsi--) { - var namespace = visibleNamespaces[nsi] - if (namespace.prefix === '' && namespace.namespace === node.namespaceURI) { - defaultNS = namespace.namespace - break - } - } - } - if (defaultNS !== node.namespaceURI) { - for (var nsi = visibleNamespaces.length - 1; nsi >= 0; nsi--) { - var namespace = visibleNamespaces[nsi] - if (namespace.namespace === node.namespaceURI) { - if (namespace.prefix) { - prefixedNodeName = namespace.prefix + ':' + nodeName - } - break - } - } - } - } - - buf.push('<', prefixedNodeName); - - for(var i=0;i'); - //if is cdata child node - if(isHTML && /^script$/i.test(nodeName)){ - while(child){ - if(child.data){ - buf.push(child.data); - }else{ - serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice()); - } - child = child.nextSibling; - } - }else - { - while(child){ - serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice()); - child = child.nextSibling; - } - } - buf.push(''); - }else{ - buf.push('/>'); - } - // remove added visible namespaces - //visibleNamespaces.length = startVisibleNamespaces; - return; - case DOCUMENT_NODE: - case DOCUMENT_FRAGMENT_NODE: - var child = node.firstChild; - while(child){ - serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice()); - child = child.nextSibling; - } - return; - case ATTRIBUTE_NODE: - return addSerializedAttribute(buf, node.name, node.value); - case TEXT_NODE: - /** - * The ampersand character (&) and the left angle bracket (<) must not appear in their literal form, - * except when used as markup delimiters, or within a comment, a processing instruction, or a CDATA section. - * If they are needed elsewhere, they must be escaped using either numeric character references or the strings - * `&` and `<` respectively. - * The right angle bracket (>) may be represented using the string " > ", and must, for compatibility, - * be escaped using either `>` or a character reference when it appears in the string `]]>` in content, - * when that string is not marking the end of a CDATA section. - * - * In the content of elements, character data is any string of characters - * which does not contain the start-delimiter of any markup - * and does not include the CDATA-section-close delimiter, `]]>`. - * - * @see https://www.w3.org/TR/xml/#NT-CharData - * @see https://w3c.github.io/DOM-Parsing/#xml-serializing-a-text-node - */ - return buf.push(node.data - .replace(/[<&>]/g,_xmlEncoder) - ); - case CDATA_SECTION_NODE: - return buf.push( ''); - case COMMENT_NODE: - return buf.push( ""); - case DOCUMENT_TYPE_NODE: - var pubid = node.publicId; - var sysid = node.systemId; - buf.push(''); - }else if(sysid && sysid!='.'){ - buf.push(' SYSTEM ', sysid, '>'); - }else{ - var sub = node.internalSubset; - if(sub){ - buf.push(" [",sub,"]"); - } - buf.push(">"); - } - return; - case PROCESSING_INSTRUCTION_NODE: - return buf.push( ""); - case ENTITY_REFERENCE_NODE: - return buf.push( '&',node.nodeName,';'); - //case ENTITY_NODE: - //case NOTATION_NODE: - default: - buf.push('??',node.nodeName); - } -} -function importNode(doc,node,deep){ - var node2; - switch (node.nodeType) { - case ELEMENT_NODE: - node2 = node.cloneNode(false); - node2.ownerDocument = doc; - //var attrs = node2.attributes; - //var len = attrs.length; - //for(var i=0;i { - -"use strict"; - - -var freeze = (__webpack_require__(/*! ./conventions */ "./node_modules/mpd-parser/node_modules/@xmldom/xmldom/lib/conventions.js").freeze); - -/** - * The entities that are predefined in every XML document. - * - * @see https://www.w3.org/TR/2006/REC-xml11-20060816/#sec-predefined-ent W3C XML 1.1 - * @see https://www.w3.org/TR/2008/REC-xml-20081126/#sec-predefined-ent W3C XML 1.0 - * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Predefined_entities_in_XML Wikipedia - */ -exports.XML_ENTITIES = freeze({ - amp: '&', - apos: "'", - gt: '>', - lt: '<', - quot: '"', -}); - -/** - * A map of all entities that are detected in an HTML document. - * They contain all entries from `XML_ENTITIES`. - * - * @see XML_ENTITIES - * @see DOMParser.parseFromString - * @see DOMImplementation.prototype.createHTMLDocument - * @see https://html.spec.whatwg.org/#named-character-references WHATWG HTML(5) Spec - * @see https://html.spec.whatwg.org/entities.json JSON - * @see https://www.w3.org/TR/xml-entity-names/ W3C XML Entity Names - * @see https://www.w3.org/TR/html4/sgml/entities.html W3C HTML4/SGML - * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Character_entity_references_in_HTML Wikipedia (HTML) - * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Entities_representing_special_characters_in_XHTML Wikpedia (XHTML) + * @see XML_ENTITIES + * @see DOMParser.parseFromString + * @see DOMImplementation.prototype.createHTMLDocument + * @see https://html.spec.whatwg.org/#named-character-references WHATWG HTML(5) Spec + * @see https://html.spec.whatwg.org/entities.json JSON + * @see https://www.w3.org/TR/xml-entity-names/ W3C XML Entity Names + * @see https://www.w3.org/TR/html4/sgml/entities.html W3C HTML4/SGML + * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Character_entity_references_in_HTML Wikipedia (HTML) + * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Entities_representing_special_characters_in_XHTML Wikpedia (XHTML) */ exports.HTML_ENTITIES = freeze({ Aacute: '\u00C1', @@ -14419,17 +12022,17 @@ __webpack_require__.r(__webpack_exports__); /* harmony import */ var _videojs_xhr__WEBPACK_IMPORTED_MODULE_4___default = /*#__PURE__*/__webpack_require__.n(_videojs_xhr__WEBPACK_IMPORTED_MODULE_4__); /* harmony import */ var videojs_vtt_js__WEBPACK_IMPORTED_MODULE_5__ = __webpack_require__(/*! videojs-vtt.js */ "./node_modules/videojs-vtt.js/lib/browser-index.js"); /* harmony import */ var videojs_vtt_js__WEBPACK_IMPORTED_MODULE_5___default = /*#__PURE__*/__webpack_require__.n(videojs_vtt_js__WEBPACK_IMPORTED_MODULE_5__); -/* harmony import */ var _videojs_vhs_utils_es_resolve_url_js__WEBPACK_IMPORTED_MODULE_6__ = __webpack_require__(/*! @videojs/vhs-utils/es/resolve-url.js */ "./node_modules/@videojs/vhs-utils/es/resolve-url.js"); +/* harmony import */ var _videojs_vhs_utils_es_resolve_url_js__WEBPACK_IMPORTED_MODULE_6__ = __webpack_require__(/*! @videojs/vhs-utils/es/resolve-url.js */ "./node_modules/video.js/node_modules/@videojs/vhs-utils/es/resolve-url.js"); /* harmony import */ var _babel_runtime_helpers_extends__WEBPACK_IMPORTED_MODULE_7__ = __webpack_require__(/*! @babel/runtime/helpers/extends */ "./node_modules/@babel/runtime/helpers/esm/extends.js"); /* harmony import */ var m3u8_parser__WEBPACK_IMPORTED_MODULE_8__ = __webpack_require__(/*! m3u8-parser */ "./node_modules/m3u8-parser/dist/m3u8-parser.es.js"); -/* harmony import */ var _videojs_vhs_utils_es_codecs_js__WEBPACK_IMPORTED_MODULE_9__ = __webpack_require__(/*! @videojs/vhs-utils/es/codecs.js */ "./node_modules/@videojs/vhs-utils/es/codecs.js"); -/* harmony import */ var _videojs_vhs_utils_es_media_types_js__WEBPACK_IMPORTED_MODULE_10__ = __webpack_require__(/*! @videojs/vhs-utils/es/media-types.js */ "./node_modules/@videojs/vhs-utils/es/media-types.js"); -/* harmony import */ var _videojs_vhs_utils_es_byte_helpers__WEBPACK_IMPORTED_MODULE_11__ = __webpack_require__(/*! @videojs/vhs-utils/es/byte-helpers */ "./node_modules/@videojs/vhs-utils/es/byte-helpers.js"); +/* harmony import */ var _videojs_vhs_utils_es_codecs_js__WEBPACK_IMPORTED_MODULE_9__ = __webpack_require__(/*! @videojs/vhs-utils/es/codecs.js */ "./node_modules/video.js/node_modules/@videojs/vhs-utils/es/codecs.js"); +/* harmony import */ var _videojs_vhs_utils_es_media_types_js__WEBPACK_IMPORTED_MODULE_10__ = __webpack_require__(/*! @videojs/vhs-utils/es/media-types.js */ "./node_modules/video.js/node_modules/@videojs/vhs-utils/es/media-types.js"); +/* harmony import */ var _videojs_vhs_utils_es_byte_helpers__WEBPACK_IMPORTED_MODULE_11__ = __webpack_require__(/*! @videojs/vhs-utils/es/byte-helpers */ "./node_modules/video.js/node_modules/@videojs/vhs-utils/es/byte-helpers.js"); /* harmony import */ var mpd_parser__WEBPACK_IMPORTED_MODULE_12__ = __webpack_require__(/*! mpd-parser */ "./node_modules/mpd-parser/dist/mpd-parser.es.js"); /* harmony import */ var mux_js_lib_tools_parse_sidx__WEBPACK_IMPORTED_MODULE_13__ = __webpack_require__(/*! mux.js/lib/tools/parse-sidx */ "./node_modules/mux.js/lib/tools/parse-sidx.js"); /* harmony import */ var mux_js_lib_tools_parse_sidx__WEBPACK_IMPORTED_MODULE_13___default = /*#__PURE__*/__webpack_require__.n(mux_js_lib_tools_parse_sidx__WEBPACK_IMPORTED_MODULE_13__); -/* harmony import */ var _videojs_vhs_utils_es_id3_helpers__WEBPACK_IMPORTED_MODULE_14__ = __webpack_require__(/*! @videojs/vhs-utils/es/id3-helpers */ "./node_modules/@videojs/vhs-utils/es/id3-helpers.js"); -/* harmony import */ var _videojs_vhs_utils_es_containers__WEBPACK_IMPORTED_MODULE_15__ = __webpack_require__(/*! @videojs/vhs-utils/es/containers */ "./node_modules/@videojs/vhs-utils/es/containers.js"); +/* harmony import */ var _videojs_vhs_utils_es_id3_helpers__WEBPACK_IMPORTED_MODULE_14__ = __webpack_require__(/*! @videojs/vhs-utils/es/id3-helpers */ "./node_modules/video.js/node_modules/@videojs/vhs-utils/es/id3-helpers.js"); +/* harmony import */ var _videojs_vhs_utils_es_containers__WEBPACK_IMPORTED_MODULE_15__ = __webpack_require__(/*! @videojs/vhs-utils/es/containers */ "./node_modules/video.js/node_modules/@videojs/vhs-utils/es/containers.js"); /* harmony import */ var mux_js_lib_utils_clock__WEBPACK_IMPORTED_MODULE_16__ = __webpack_require__(/*! mux.js/lib/utils/clock */ "./node_modules/mux.js/lib/utils/clock.js"); /* harmony import */ var mux_js_lib_utils_clock__WEBPACK_IMPORTED_MODULE_16___default = /*#__PURE__*/__webpack_require__.n(mux_js_lib_utils_clock__WEBPACK_IMPORTED_MODULE_16__); /** @@ -34097,11591 +31700,13865 @@ Html5.resetMediaElement = function (el) { * The value of `networkState` from the media element. This will be a number * from the list in the description. * - * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-networkstate} + * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-networkstate} + */ +'networkState', +/** + * Get the value of `readyState` from the media element. `readyState` indicates + * the current state of the media element. It returns an enumeration from the + * following list: + * - 0: HAVE_NOTHING + * - 1: HAVE_METADATA + * - 2: HAVE_CURRENT_DATA + * - 3: HAVE_FUTURE_DATA + * - 4: HAVE_ENOUGH_DATA + * + * @method Html5#readyState + * @return {number} + * The value of `readyState` from the media element. This will be a number + * from the list in the description. + * + * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#ready-states} + */ +'readyState', +/** + * Get the value of `videoWidth` from the video element. `videoWidth` indicates + * the current width of the video in css pixels. + * + * @method Html5#videoWidth + * @return {number} + * The value of `videoWidth` from the video element. This will be a number + * in css pixels. + * + * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-video-videowidth} + */ +'videoWidth', +/** + * Get the value of `videoHeight` from the video element. `videoHeight` indicates + * the current height of the video in css pixels. + * + * @method Html5#videoHeight + * @return {number} + * The value of `videoHeight` from the video element. This will be a number + * in css pixels. + * + * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-video-videowidth} + */ +'videoHeight', +/** + * Get the value of `crossOrigin` from the media element. `crossOrigin` indicates + * to the browser that should sent the cookies along with the requests for the + * different assets/playlists + * + * @method Html5#crossOrigin + * @return {string} + * - anonymous indicates that the media should not sent cookies. + * - use-credentials indicates that the media should sent cookies along the requests. + * + * @see [Spec]{@link https://html.spec.whatwg.org/#attr-media-crossorigin} + */ +'crossOrigin'].forEach(function (prop) { + Html5.prototype[prop] = function () { + return this.el_[prop]; + }; +}); + +// Wrap native properties with a setter in this format: +// set + toTitleCase(name) +// The list is as follows: +// setVolume, setSrc, setPoster, setPreload, setPlaybackRate, setDefaultPlaybackRate, +// setDisablePictureInPicture, setCrossOrigin +[ +/** + * Set the value of `volume` on the media element. `volume` indicates the current + * audio level as a percentage in decimal form. This means that 1 is 100%, 0.5 is 50%, and + * so on. + * + * @method Html5#setVolume + * @param {number} percentAsDecimal + * The volume percent as a decimal. Valid range is from 0-1. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-a-volume} + */ +'volume', +/** + * Set the value of `src` on the media element. `src` indicates the current + * {@link Tech~SourceObject} for the media. + * + * @method Html5#setSrc + * @param {Tech~SourceObject} src + * The source object to set as the current source. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-src} + */ +'src', +/** + * Set the value of `poster` on the media element. `poster` is the url to + * an image file that can/will be shown when no media data is available. + * + * @method Html5#setPoster + * @param {string} poster + * The url to an image that should be used as the `poster` for the media + * element. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-poster} + */ +'poster', +/** + * Set the value of `preload` on the media element. `preload` indicates + * what should download before the media is interacted with. It can have the following + * values: + * - none: nothing should be downloaded + * - metadata: poster and the first few frames of the media may be downloaded to get + * media dimensions and other metadata + * - auto: allow the media and metadata for the media to be downloaded before + * interaction + * + * @method Html5#setPreload + * @param {string} preload + * The value of `preload` to set on the media element. Must be 'none', 'metadata', + * or 'auto'. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-preload} + */ +'preload', +/** + * Set the value of `playbackRate` on the media element. `playbackRate` indicates + * the rate at which the media should play back. Examples: + * - if playbackRate is set to 2, media will play twice as fast. + * - if playbackRate is set to 0.5, media will play half as fast. + * + * @method Html5#setPlaybackRate + * @return {number} + * The value of `playbackRate` from the media element. A number indicating + * the current playback speed of the media, where 1 is normal speed. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate} + */ +'playbackRate', +/** + * Set the value of `defaultPlaybackRate` on the media element. `defaultPlaybackRate` indicates + * the rate at which the media should play back upon initial startup. Changing this value + * after a video has started will do nothing. Instead you should used {@link Html5#setPlaybackRate}. + * + * Example Values: + * - if playbackRate is set to 2, media will play twice as fast. + * - if playbackRate is set to 0.5, media will play half as fast. + * + * @method Html5.prototype.setDefaultPlaybackRate + * @return {number} + * The value of `defaultPlaybackRate` from the media element. A number indicating + * the current playback speed of the media, where 1 is normal speed. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultplaybackrate} + */ +'defaultPlaybackRate', +/** + * Prevents the browser from suggesting a Picture-in-Picture context menu + * or to request Picture-in-Picture automatically in some cases. + * + * @method Html5#setDisablePictureInPicture + * @param {boolean} value + * The true value will disable Picture-in-Picture mode. + * + * @see [Spec]{@link https://w3c.github.io/picture-in-picture/#disable-pip} + */ +'disablePictureInPicture', +/** + * Set the value of `crossOrigin` from the media element. `crossOrigin` indicates + * to the browser that should sent the cookies along with the requests for the + * different assets/playlists + * + * @method Html5#setCrossOrigin + * @param {string} crossOrigin + * - anonymous indicates that the media should not sent cookies. + * - use-credentials indicates that the media should sent cookies along the requests. + * + * @see [Spec]{@link https://html.spec.whatwg.org/#attr-media-crossorigin} + */ +'crossOrigin'].forEach(function (prop) { + Html5.prototype['set' + toTitleCase$1(prop)] = function (v) { + this.el_[prop] = v; + }; +}); + +// wrap native functions with a function +// The list is as follows: +// pause, load, play +[ +/** + * A wrapper around the media elements `pause` function. This will call the `HTML5` + * media elements `pause` function. + * + * @method Html5#pause + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-pause} + */ +'pause', +/** + * A wrapper around the media elements `load` function. This will call the `HTML5`s + * media element `load` function. + * + * @method Html5#load + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-load} + */ +'load', +/** + * A wrapper around the media elements `play` function. This will call the `HTML5`s + * media element `play` function. + * + * @method Html5#play + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-play} + */ +'play'].forEach(function (prop) { + Html5.prototype[prop] = function () { + return this.el_[prop](); + }; +}); +Tech.withSourceHandlers(Html5); + +/** + * Native source handler for Html5, simply passes the source to the media element. + * + * @property {Tech~SourceObject} source + * The source object + * + * @property {Html5} tech + * The instance of the HTML5 tech. + */ +Html5.nativeSourceHandler = {}; + +/** + * Check if the media element can play the given mime type. + * + * @param {string} type + * The mimetype to check + * + * @return {string} + * 'probably', 'maybe', or '' (empty string) + */ +Html5.nativeSourceHandler.canPlayType = function (type) { + // IE without MediaPlayer throws an error (#519) + try { + return Html5.TEST_VID.canPlayType(type); + } catch (e) { + return ''; + } +}; + +/** + * Check if the media element can handle a source natively. + * + * @param {Tech~SourceObject} source + * The source object + * + * @param {Object} [options] + * Options to be passed to the tech. + * + * @return {string} + * 'probably', 'maybe', or '' (empty string). + */ +Html5.nativeSourceHandler.canHandleSource = function (source, options) { + // If a type was provided we should rely on that + if (source.type) { + return Html5.nativeSourceHandler.canPlayType(source.type); + + // If no type, fall back to checking 'video/[EXTENSION]' + } else if (source.src) { + const ext = getFileExtension(source.src); + return Html5.nativeSourceHandler.canPlayType(`video/${ext}`); + } + return ''; +}; + +/** + * Pass the source to the native media element. + * + * @param {Tech~SourceObject} source + * The source object + * + * @param {Html5} tech + * The instance of the Html5 tech + * + * @param {Object} [options] + * The options to pass to the source + */ +Html5.nativeSourceHandler.handleSource = function (source, tech, options) { + tech.setSrc(source.src); +}; + +/** + * A noop for the native dispose function, as cleanup is not needed. + */ +Html5.nativeSourceHandler.dispose = function () {}; + +// Register the native source handler +Html5.registerSourceHandler(Html5.nativeSourceHandler); +Tech.registerTech('Html5', Html5); + +/** + * @file player.js + */ + +// The following tech events are simply re-triggered +// on the player when they happen +const TECH_EVENTS_RETRIGGER = [ +/** + * Fired while the user agent is downloading media data. + * + * @event Player#progress + * @type {Event} + */ +/** + * Retrigger the `progress` event that was triggered by the {@link Tech}. + * + * @private + * @method Player#handleTechProgress_ + * @fires Player#progress + * @listens Tech#progress + */ +'progress', +/** + * Fires when the loading of an audio/video is aborted. + * + * @event Player#abort + * @type {Event} + */ +/** + * Retrigger the `abort` event that was triggered by the {@link Tech}. + * + * @private + * @method Player#handleTechAbort_ + * @fires Player#abort + * @listens Tech#abort + */ +'abort', +/** + * Fires when the browser is intentionally not getting media data. + * + * @event Player#suspend + * @type {Event} + */ +/** + * Retrigger the `suspend` event that was triggered by the {@link Tech}. + * + * @private + * @method Player#handleTechSuspend_ + * @fires Player#suspend + * @listens Tech#suspend + */ +'suspend', +/** + * Fires when the current playlist is empty. + * + * @event Player#emptied + * @type {Event} + */ +/** + * Retrigger the `emptied` event that was triggered by the {@link Tech}. + * + * @private + * @method Player#handleTechEmptied_ + * @fires Player#emptied + * @listens Tech#emptied + */ +'emptied', +/** + * Fires when the browser is trying to get media data, but data is not available. + * + * @event Player#stalled + * @type {Event} + */ +/** + * Retrigger the `stalled` event that was triggered by the {@link Tech}. + * + * @private + * @method Player#handleTechStalled_ + * @fires Player#stalled + * @listens Tech#stalled + */ +'stalled', +/** + * Fires when the browser has loaded meta data for the audio/video. + * + * @event Player#loadedmetadata + * @type {Event} + */ +/** + * Retrigger the `loadedmetadata` event that was triggered by the {@link Tech}. + * + * @private + * @method Player#handleTechLoadedmetadata_ + * @fires Player#loadedmetadata + * @listens Tech#loadedmetadata + */ +'loadedmetadata', +/** + * Fires when the browser has loaded the current frame of the audio/video. + * + * @event Player#loadeddata + * @type {event} + */ +/** + * Retrigger the `loadeddata` event that was triggered by the {@link Tech}. + * + * @private + * @method Player#handleTechLoaddeddata_ + * @fires Player#loadeddata + * @listens Tech#loadeddata + */ +'loadeddata', +/** + * Fires when the current playback position has changed. + * + * @event Player#timeupdate + * @type {event} + */ +/** + * Retrigger the `timeupdate` event that was triggered by the {@link Tech}. + * + * @private + * @method Player#handleTechTimeUpdate_ + * @fires Player#timeupdate + * @listens Tech#timeupdate */ -'networkState', +'timeupdate', /** - * Get the value of `readyState` from the media element. `readyState` indicates - * the current state of the media element. It returns an enumeration from the - * following list: - * - 0: HAVE_NOTHING - * - 1: HAVE_METADATA - * - 2: HAVE_CURRENT_DATA - * - 3: HAVE_FUTURE_DATA - * - 4: HAVE_ENOUGH_DATA + * Fires when the video's intrinsic dimensions change * - * @method Html5#readyState - * @return {number} - * The value of `readyState` from the media element. This will be a number - * from the list in the description. + * @event Player#resize + * @type {event} + */ +/** + * Retrigger the `resize` event that was triggered by the {@link Tech}. * - * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#ready-states} + * @private + * @method Player#handleTechResize_ + * @fires Player#resize + * @listens Tech#resize */ -'readyState', +'resize', /** - * Get the value of `videoWidth` from the video element. `videoWidth` indicates - * the current width of the video in css pixels. + * Fires when the volume has been changed * - * @method Html5#videoWidth - * @return {number} - * The value of `videoWidth` from the video element. This will be a number - * in css pixels. + * @event Player#volumechange + * @type {event} + */ +/** + * Retrigger the `volumechange` event that was triggered by the {@link Tech}. * - * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-video-videowidth} + * @private + * @method Player#handleTechVolumechange_ + * @fires Player#volumechange + * @listens Tech#volumechange */ -'videoWidth', +'volumechange', /** - * Get the value of `videoHeight` from the video element. `videoHeight` indicates - * the current height of the video in css pixels. + * Fires when the text track has been changed * - * @method Html5#videoHeight - * @return {number} - * The value of `videoHeight` from the video element. This will be a number - * in css pixels. + * @event Player#texttrackchange + * @type {event} + */ +/** + * Retrigger the `texttrackchange` event that was triggered by the {@link Tech}. * - * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-video-videowidth} + * @private + * @method Player#handleTechTexttrackchange_ + * @fires Player#texttrackchange + * @listens Tech#texttrackchange */ -'videoHeight', +'texttrackchange']; + +// events to queue when playback rate is zero +// this is a hash for the sole purpose of mapping non-camel-cased event names +// to camel-cased function names +const TECH_EVENTS_QUEUE = { + canplay: 'CanPlay', + canplaythrough: 'CanPlayThrough', + playing: 'Playing', + seeked: 'Seeked' +}; +const BREAKPOINT_ORDER = ['tiny', 'xsmall', 'small', 'medium', 'large', 'xlarge', 'huge']; +const BREAKPOINT_CLASSES = {}; + +// grep: vjs-layout-tiny +// grep: vjs-layout-x-small +// grep: vjs-layout-small +// grep: vjs-layout-medium +// grep: vjs-layout-large +// grep: vjs-layout-x-large +// grep: vjs-layout-huge +BREAKPOINT_ORDER.forEach(k => { + const v = k.charAt(0) === 'x' ? `x-${k.substring(1)}` : k; + BREAKPOINT_CLASSES[k] = `vjs-layout-${v}`; +}); +const DEFAULT_BREAKPOINTS = { + tiny: 210, + xsmall: 320, + small: 425, + medium: 768, + large: 1440, + xlarge: 2560, + huge: Infinity +}; + /** - * Get the value of `crossOrigin` from the media element. `crossOrigin` indicates - * to the browser that should sent the cookies along with the requests for the - * different assets/playlists + * An instance of the `Player` class is created when any of the Video.js setup methods + * are used to initialize a video. * - * @method Html5#crossOrigin - * @return {string} - * - anonymous indicates that the media should not sent cookies. - * - use-credentials indicates that the media should sent cookies along the requests. + * After an instance has been created it can be accessed globally in three ways: + * 1. By calling `videojs.getPlayer('example_video_1');` + * 2. By calling `videojs('example_video_1');` (not recommended) + * 2. By using it directly via `videojs.players.example_video_1;` * - * @see [Spec]{@link https://html.spec.whatwg.org/#attr-media-crossorigin} + * @extends Component + * @global */ -'crossOrigin'].forEach(function (prop) { - Html5.prototype[prop] = function () { - return this.el_[prop]; - }; -}); +class Player extends Component$1 { + /** + * Create an instance of this class. + * + * @param {Element} tag + * The original video DOM element used for configuring options. + * + * @param {Object} [options] + * Object of option names and values. + * + * @param {Function} [ready] + * Ready callback function. + */ + constructor(tag, options, ready) { + // Make sure tag ID exists + // also here.. probably better + tag.id = tag.id || options.id || `vjs_video_${newGUID()}`; + + // Set Options + // The options argument overrides options set in the video tag + // which overrides globally set options. + // This latter part coincides with the load order + // (tag must exist before Player) + options = Object.assign(Player.getTagSettings(tag), options); + + // Delay the initialization of children because we need to set up + // player properties first, and can't use `this` before `super()` + options.initChildren = false; + + // Same with creating the element + options.createEl = false; + + // don't auto mixin the evented mixin + options.evented = false; + + // we don't want the player to report touch activity on itself + // see enableTouchActivity in Component + options.reportTouchActivity = false; + + // If language is not set, get the closest lang attribute + if (!options.language) { + const closest = tag.closest('[lang]'); + if (closest) { + options.language = closest.getAttribute('lang'); + } + } + + // Run base component initializing with new options + super(null, options, ready); + + // Create bound methods for document listeners. + this.boundDocumentFullscreenChange_ = e => this.documentFullscreenChange_(e); + this.boundFullWindowOnEscKey_ = e => this.fullWindowOnEscKey(e); + this.boundUpdateStyleEl_ = e => this.updateStyleEl_(e); + this.boundApplyInitTime_ = e => this.applyInitTime_(e); + this.boundUpdateCurrentBreakpoint_ = e => this.updateCurrentBreakpoint_(e); + this.boundHandleTechClick_ = e => this.handleTechClick_(e); + this.boundHandleTechDoubleClick_ = e => this.handleTechDoubleClick_(e); + this.boundHandleTechTouchStart_ = e => this.handleTechTouchStart_(e); + this.boundHandleTechTouchMove_ = e => this.handleTechTouchMove_(e); + this.boundHandleTechTouchEnd_ = e => this.handleTechTouchEnd_(e); + this.boundHandleTechTap_ = e => this.handleTechTap_(e); + + // default isFullscreen_ to false + this.isFullscreen_ = false; + + // create logger + this.log = createLogger(this.id_); + + // Hold our own reference to fullscreen api so it can be mocked in tests + this.fsApi_ = FullscreenApi; + + // Tracks when a tech changes the poster + this.isPosterFromTech_ = false; + + // Holds callback info that gets queued when playback rate is zero + // and a seek is happening + this.queuedCallbacks_ = []; + + // Turn off API access because we're loading a new tech that might load asynchronously + this.isReady_ = false; + + // Init state hasStarted_ + this.hasStarted_ = false; + + // Init state userActive_ + this.userActive_ = false; + + // Init debugEnabled_ + this.debugEnabled_ = false; + + // Init state audioOnlyMode_ + this.audioOnlyMode_ = false; + + // Init state audioPosterMode_ + this.audioPosterMode_ = false; + + // Init state audioOnlyCache_ + this.audioOnlyCache_ = { + playerHeight: null, + hiddenChildren: [] + }; + + // if the global option object was accidentally blown away by + // someone, bail early with an informative error + if (!this.options_ || !this.options_.techOrder || !this.options_.techOrder.length) { + throw new Error('No techOrder specified. Did you overwrite ' + 'videojs.options instead of just changing the ' + 'properties you want to override?'); + } + + // Store the original tag used to set options + this.tag = tag; + + // Store the tag attributes used to restore html5 element + this.tagAttributes = tag && getAttributes(tag); + + // Update current language + this.language(this.options_.language); + + // Update Supported Languages + if (options.languages) { + // Normalise player option languages to lowercase + const languagesToLower = {}; + Object.getOwnPropertyNames(options.languages).forEach(function (name) { + languagesToLower[name.toLowerCase()] = options.languages[name]; + }); + this.languages_ = languagesToLower; + } else { + this.languages_ = Player.prototype.options_.languages; + } + this.resetCache_(); + + // Set poster + /** @type string */ + this.poster_ = options.poster || ''; + + // Set controls + /** @type {boolean} */ + this.controls_ = !!options.controls; + + // Original tag settings stored in options + // now remove immediately so native controls don't flash. + // May be turned back on by HTML5 tech if nativeControlsForTouch is true + tag.controls = false; + tag.removeAttribute('controls'); + this.changingSrc_ = false; + this.playCallbacks_ = []; + this.playTerminatedQueue_ = []; + + // the attribute overrides the option + if (tag.hasAttribute('autoplay')) { + this.autoplay(true); + } else { + // otherwise use the setter to validate and + // set the correct value. + this.autoplay(this.options_.autoplay); + } + + // check plugins + if (options.plugins) { + Object.keys(options.plugins).forEach(name => { + if (typeof this[name] !== 'function') { + throw new Error(`plugin "${name}" does not exist`); + } + }); + } + + /* + * Store the internal state of scrubbing + * + * @private + * @return {Boolean} True if the user is scrubbing + */ + this.scrubbing_ = false; + this.el_ = this.createEl(); + + // Make this an evented object and use `el_` as its event bus. + evented(this, { + eventBusKey: 'el_' + }); + + // listen to document and player fullscreenchange handlers so we receive those events + // before a user can receive them so we can update isFullscreen appropriately. + // make sure that we listen to fullscreenchange events before everything else to make sure that + // our isFullscreen method is updated properly for internal components as well as external. + if (this.fsApi_.requestFullscreen) { + on((global_document__WEBPACK_IMPORTED_MODULE_1___default()), this.fsApi_.fullscreenchange, this.boundDocumentFullscreenChange_); + this.on(this.fsApi_.fullscreenchange, this.boundDocumentFullscreenChange_); + } + if (this.fluid_) { + this.on(['playerreset', 'resize'], this.boundUpdateStyleEl_); + } + // We also want to pass the original player options to each component and plugin + // as well so they don't need to reach back into the player for options later. + // We also need to do another copy of this.options_ so we don't end up with + // an infinite loop. + const playerOptionsCopy = merge$1(this.options_); + + // Load plugins + if (options.plugins) { + Object.keys(options.plugins).forEach(name => { + this[name](options.plugins[name]); + }); + } + + // Enable debug mode to fire debugon event for all plugins. + if (options.debug) { + this.debug(true); + } + this.options_.playerOptions = playerOptionsCopy; + this.middleware_ = []; + this.playbackRates(options.playbackRates); + if (options.experimentalSvgIcons) { + // Add SVG Sprite to the DOM + const parser = new (global_window__WEBPACK_IMPORTED_MODULE_0___default().DOMParser)(); + const parsedSVG = parser.parseFromString(icons, 'image/svg+xml'); + const errorNode = parsedSVG.querySelector('parsererror'); + if (errorNode) { + log$1.warn('Failed to load SVG Icons. Falling back to Font Icons.'); + this.options_.experimentalSvgIcons = null; + } else { + const sprite = parsedSVG.documentElement; + sprite.style.display = 'none'; + this.el_.appendChild(sprite); + this.addClass('vjs-svg-icons-enabled'); + } + } + this.initChildren(); + + // Set isAudio based on whether or not an audio tag was used + this.isAudio(tag.nodeName.toLowerCase() === 'audio'); + + // Update controls className. Can't do this when the controls are initially + // set because the element doesn't exist yet. + if (this.controls()) { + this.addClass('vjs-controls-enabled'); + } else { + this.addClass('vjs-controls-disabled'); + } + + // Set ARIA label and region role depending on player type + this.el_.setAttribute('role', 'region'); + if (this.isAudio()) { + this.el_.setAttribute('aria-label', this.localize('Audio Player')); + } else { + this.el_.setAttribute('aria-label', this.localize('Video Player')); + } + if (this.isAudio()) { + this.addClass('vjs-audio'); + } + + // TODO: Make this smarter. Toggle user state between touching/mousing + // using events, since devices can have both touch and mouse events. + // TODO: Make this check be performed again when the window switches between monitors + // (See https://github.com/videojs/video.js/issues/5683) + if (TOUCH_ENABLED) { + this.addClass('vjs-touch-enabled'); + } + + // iOS Safari has broken hover handling + if (!IS_IOS) { + this.addClass('vjs-workinghover'); + } + + // Make player easily findable by ID + Player.players[this.id_] = this; + + // Add a major version class to aid css in plugins + const majorVersion = version$6.split('.')[0]; + this.addClass(`vjs-v${majorVersion}`); + + // When the player is first initialized, trigger activity so components + // like the control bar show themselves if needed + this.userActive(true); + this.reportUserActivity(); + this.one('play', e => this.listenForUserActivity_(e)); + this.on('keydown', e => this.handleKeyDown(e)); + this.on('languagechange', e => this.handleLanguagechange(e)); + this.breakpoints(this.options_.breakpoints); + this.responsive(this.options_.responsive); + + // Calling both the audio mode methods after the player is fully + // setup to be able to listen to the events triggered by them + this.on('ready', () => { + // Calling the audioPosterMode method first so that + // the audioOnlyMode can take precedence when both options are set to true + this.audioPosterMode(this.options_.audioPosterMode); + this.audioOnlyMode(this.options_.audioOnlyMode); + }); + } + + /** + * Destroys the video player and does any necessary cleanup. + * + * This is especially helpful if you are dynamically adding and removing videos + * to/from the DOM. + * + * @fires Player#dispose + */ + dispose() { + /** + * Called when the player is being disposed of. + * + * @event Player#dispose + * @type {Event} + */ + this.trigger('dispose'); + // prevent dispose from being called twice + this.off('dispose'); + + // Make sure all player-specific document listeners are unbound. This is + off((global_document__WEBPACK_IMPORTED_MODULE_1___default()), this.fsApi_.fullscreenchange, this.boundDocumentFullscreenChange_); + off((global_document__WEBPACK_IMPORTED_MODULE_1___default()), 'keydown', this.boundFullWindowOnEscKey_); + if (this.styleEl_ && this.styleEl_.parentNode) { + this.styleEl_.parentNode.removeChild(this.styleEl_); + this.styleEl_ = null; + } + + // Kill reference to this player + Player.players[this.id_] = null; + if (this.tag && this.tag.player) { + this.tag.player = null; + } + if (this.el_ && this.el_.player) { + this.el_.player = null; + } + if (this.tech_) { + this.tech_.dispose(); + this.isPosterFromTech_ = false; + this.poster_ = ''; + } + if (this.playerElIngest_) { + this.playerElIngest_ = null; + } + if (this.tag) { + this.tag = null; + } + clearCacheForPlayer(this); + + // remove all event handlers for track lists + // all tracks and track listeners are removed on + // tech dispose + ALL.names.forEach(name => { + const props = ALL[name]; + const list = this[props.getterName](); + + // if it is not a native list + // we have to manually remove event listeners + if (list && list.off) { + list.off(); + } + }); + + // the actual .el_ is removed here, or replaced if + super.dispose({ + restoreEl: this.options_.restoreEl + }); + } + + /** + * Create the `Player`'s DOM element. + * + * @return {Element} + * The DOM element that gets created. + */ + createEl() { + let tag = this.tag; + let el; + let playerElIngest = this.playerElIngest_ = tag.parentNode && tag.parentNode.hasAttribute && tag.parentNode.hasAttribute('data-vjs-player'); + const divEmbed = this.tag.tagName.toLowerCase() === 'video-js'; + if (playerElIngest) { + el = this.el_ = tag.parentNode; + } else if (!divEmbed) { + el = this.el_ = super.createEl('div'); + } + + // Copy over all the attributes from the tag, including ID and class + // ID will now reference player box, not the video tag + const attrs = getAttributes(tag); + if (divEmbed) { + el = this.el_ = tag; + tag = this.tag = global_document__WEBPACK_IMPORTED_MODULE_1___default().createElement('video'); + while (el.children.length) { + tag.appendChild(el.firstChild); + } + if (!hasClass(el, 'video-js')) { + addClass(el, 'video-js'); + } + el.appendChild(tag); + playerElIngest = this.playerElIngest_ = el; + // move properties over from our custom `video-js` element + // to our new `video` element. This will move things like + // `src` or `controls` that were set via js before the player + // was initialized. + Object.keys(el).forEach(k => { + try { + tag[k] = el[k]; + } catch (e) { + // we got a a property like outerHTML which we can't actually copy, ignore it + } + }); + } -// Wrap native properties with a setter in this format: -// set + toTitleCase(name) -// The list is as follows: -// setVolume, setSrc, setPoster, setPreload, setPlaybackRate, setDefaultPlaybackRate, -// setDisablePictureInPicture, setCrossOrigin -[ -/** - * Set the value of `volume` on the media element. `volume` indicates the current - * audio level as a percentage in decimal form. This means that 1 is 100%, 0.5 is 50%, and - * so on. - * - * @method Html5#setVolume - * @param {number} percentAsDecimal - * The volume percent as a decimal. Valid range is from 0-1. - * - * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-a-volume} - */ -'volume', -/** - * Set the value of `src` on the media element. `src` indicates the current - * {@link Tech~SourceObject} for the media. - * - * @method Html5#setSrc - * @param {Tech~SourceObject} src - * The source object to set as the current source. - * - * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-src} - */ -'src', -/** - * Set the value of `poster` on the media element. `poster` is the url to - * an image file that can/will be shown when no media data is available. - * - * @method Html5#setPoster - * @param {string} poster - * The url to an image that should be used as the `poster` for the media - * element. - * - * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-poster} - */ -'poster', -/** - * Set the value of `preload` on the media element. `preload` indicates - * what should download before the media is interacted with. It can have the following - * values: - * - none: nothing should be downloaded - * - metadata: poster and the first few frames of the media may be downloaded to get - * media dimensions and other metadata - * - auto: allow the media and metadata for the media to be downloaded before - * interaction - * - * @method Html5#setPreload - * @param {string} preload - * The value of `preload` to set on the media element. Must be 'none', 'metadata', - * or 'auto'. - * - * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-preload} - */ -'preload', -/** - * Set the value of `playbackRate` on the media element. `playbackRate` indicates - * the rate at which the media should play back. Examples: - * - if playbackRate is set to 2, media will play twice as fast. - * - if playbackRate is set to 0.5, media will play half as fast. - * - * @method Html5#setPlaybackRate - * @return {number} - * The value of `playbackRate` from the media element. A number indicating - * the current playback speed of the media, where 1 is normal speed. - * - * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate} - */ -'playbackRate', -/** - * Set the value of `defaultPlaybackRate` on the media element. `defaultPlaybackRate` indicates - * the rate at which the media should play back upon initial startup. Changing this value - * after a video has started will do nothing. Instead you should used {@link Html5#setPlaybackRate}. - * - * Example Values: - * - if playbackRate is set to 2, media will play twice as fast. - * - if playbackRate is set to 0.5, media will play half as fast. - * - * @method Html5.prototype.setDefaultPlaybackRate - * @return {number} - * The value of `defaultPlaybackRate` from the media element. A number indicating - * the current playback speed of the media, where 1 is normal speed. - * - * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultplaybackrate} - */ -'defaultPlaybackRate', -/** - * Prevents the browser from suggesting a Picture-in-Picture context menu - * or to request Picture-in-Picture automatically in some cases. - * - * @method Html5#setDisablePictureInPicture - * @param {boolean} value - * The true value will disable Picture-in-Picture mode. - * - * @see [Spec]{@link https://w3c.github.io/picture-in-picture/#disable-pip} - */ -'disablePictureInPicture', -/** - * Set the value of `crossOrigin` from the media element. `crossOrigin` indicates - * to the browser that should sent the cookies along with the requests for the - * different assets/playlists - * - * @method Html5#setCrossOrigin - * @param {string} crossOrigin - * - anonymous indicates that the media should not sent cookies. - * - use-credentials indicates that the media should sent cookies along the requests. - * - * @see [Spec]{@link https://html.spec.whatwg.org/#attr-media-crossorigin} - */ -'crossOrigin'].forEach(function (prop) { - Html5.prototype['set' + toTitleCase$1(prop)] = function (v) { - this.el_[prop] = v; - }; -}); + // set tabindex to -1 to remove the video element from the focus order + tag.setAttribute('tabindex', '-1'); + attrs.tabindex = '-1'; -// wrap native functions with a function -// The list is as follows: -// pause, load, play -[ -/** - * A wrapper around the media elements `pause` function. This will call the `HTML5` - * media elements `pause` function. - * - * @method Html5#pause - * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-pause} - */ -'pause', -/** - * A wrapper around the media elements `load` function. This will call the `HTML5`s - * media element `load` function. - * - * @method Html5#load - * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-load} - */ -'load', -/** - * A wrapper around the media elements `play` function. This will call the `HTML5`s - * media element `play` function. - * - * @method Html5#play - * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-play} - */ -'play'].forEach(function (prop) { - Html5.prototype[prop] = function () { - return this.el_[prop](); - }; -}); -Tech.withSourceHandlers(Html5); + // Workaround for #4583 on Chrome (on Windows) with JAWS. + // See https://github.com/FreedomScientific/VFO-standards-support/issues/78 + // Note that we can't detect if JAWS is being used, but this ARIA attribute + // doesn't change behavior of Chrome if JAWS is not being used + if (IS_CHROME && IS_WINDOWS) { + tag.setAttribute('role', 'application'); + attrs.role = 'application'; + } -/** - * Native source handler for Html5, simply passes the source to the media element. - * - * @property {Tech~SourceObject} source - * The source object - * - * @property {Html5} tech - * The instance of the HTML5 tech. - */ -Html5.nativeSourceHandler = {}; + // Remove width/height attrs from tag so CSS can make it 100% width/height + tag.removeAttribute('width'); + tag.removeAttribute('height'); + if ('width' in attrs) { + delete attrs.width; + } + if ('height' in attrs) { + delete attrs.height; + } + Object.getOwnPropertyNames(attrs).forEach(function (attr) { + // don't copy over the class attribute to the player element when we're in a div embed + // the class is already set up properly in the divEmbed case + // and we want to make sure that the `video-js` class doesn't get lost + if (!(divEmbed && attr === 'class')) { + el.setAttribute(attr, attrs[attr]); + } + if (divEmbed) { + tag.setAttribute(attr, attrs[attr]); + } + }); -/** - * Check if the media element can play the given mime type. - * - * @param {string} type - * The mimetype to check - * - * @return {string} - * 'probably', 'maybe', or '' (empty string) - */ -Html5.nativeSourceHandler.canPlayType = function (type) { - // IE without MediaPlayer throws an error (#519) - try { - return Html5.TEST_VID.canPlayType(type); - } catch (e) { - return ''; + // Update tag id/class for use as HTML5 playback tech + // Might think we should do this after embedding in container so .vjs-tech class + // doesn't flash 100% width/height, but class only applies with .video-js parent + tag.playerId = tag.id; + tag.id += '_html5_api'; + tag.className = 'vjs-tech'; + + // Make player findable on elements + tag.player = el.player = this; + // Default state of video is paused + this.addClass('vjs-paused'); + + // Add a style element in the player that we'll use to set the width/height + // of the player in a way that's still overridable by CSS, just like the + // video element + if ((global_window__WEBPACK_IMPORTED_MODULE_0___default().VIDEOJS_NO_DYNAMIC_STYLE) !== true) { + this.styleEl_ = createStyleElement('vjs-styles-dimensions'); + const defaultsStyleEl = $('.vjs-styles-defaults'); + const head = $('head'); + head.insertBefore(this.styleEl_, defaultsStyleEl ? defaultsStyleEl.nextSibling : head.firstChild); + } + this.fill_ = false; + this.fluid_ = false; + + // Pass in the width/height/aspectRatio options which will update the style el + this.width(this.options_.width); + this.height(this.options_.height); + this.fill(this.options_.fill); + this.fluid(this.options_.fluid); + this.aspectRatio(this.options_.aspectRatio); + // support both crossOrigin and crossorigin to reduce confusion and issues around the name + this.crossOrigin(this.options_.crossOrigin || this.options_.crossorigin); + + // Hide any links within the video/audio tag, + // because IE doesn't hide them completely from screen readers. + const links = tag.getElementsByTagName('a'); + for (let i = 0; i < links.length; i++) { + const linkEl = links.item(i); + addClass(linkEl, 'vjs-hidden'); + linkEl.setAttribute('hidden', 'hidden'); + } + + // insertElFirst seems to cause the networkState to flicker from 3 to 2, so + // keep track of the original for later so we can know if the source originally failed + tag.initNetworkState_ = tag.networkState; + + // Wrap video tag in div (el/box) container + if (tag.parentNode && !playerElIngest) { + tag.parentNode.insertBefore(el, tag); + } + + // insert the tag as the first child of the player element + // then manually add it to the children array so that this.addChild + // will work properly for other components + // + // Breaks iPhone, fixed in HTML5 setup. + prependTo(tag, el); + this.children_.unshift(tag); + + // Set lang attr on player to ensure CSS :lang() in consistent with player + // if it's been set to something different to the doc + this.el_.setAttribute('lang', this.language_); + this.el_.setAttribute('translate', 'no'); + this.el_ = el; + return el; } -}; -/** - * Check if the media element can handle a source natively. - * - * @param {Tech~SourceObject} source - * The source object - * - * @param {Object} [options] - * Options to be passed to the tech. - * - * @return {string} - * 'probably', 'maybe', or '' (empty string). - */ -Html5.nativeSourceHandler.canHandleSource = function (source, options) { - // If a type was provided we should rely on that - if (source.type) { - return Html5.nativeSourceHandler.canPlayType(source.type); + /** + * Get or set the `Player`'s crossOrigin option. For the HTML5 player, this + * sets the `crossOrigin` property on the `
.
` codec string with the standard + * `avc1.` + * + * @param {string} codec + * Codec string to translate + * @return {string} + * The translated codec string + */ - this.load(); +var translateLegacyCodec = function translateLegacyCodec(codec) { + if (!codec) { + return codec; } - /** - * get the current duration - * - * @return {TimeRange} the duration - */ - duration() { - if (!this.mainPlaylistLoader_) { - return 0; - } - const media = this.mainPlaylistLoader_.media(); - if (!media) { - // no playlists loaded yet, so can't determine a duration - return 0; - } // Don't rely on the media source for duration in the case of a live playlist since - // setting the native MediaSource's duration to infinity ends up with consequences to - // seekable behavior. See https://github.com/w3c/media-source/issues/5 for details. - // - // This is resolved in the spec by https://github.com/w3c/media-source/pull/92, - // however, few browsers have support for setLiveSeekableRange() - // https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/setLiveSeekableRange - // - // Until a time when the duration of the media source can be set to infinity, and a - // seekable range specified across browsers, just return Infinity. + return codec.replace(/avc1\.(\d+)\.(\d+)/i, function (orig, profile, avcLevel) { + var profileHex = ('00' + Number(profile).toString(16)).slice(-2); + var avcLevelHex = ('00' + Number(avcLevel).toString(16)).slice(-2); + return 'avc1.' + profileHex + '00' + avcLevelHex; + }); +}; +/** + * Replace the old apple-style `avc1.
.
` codec strings with the standard + * `avc1.` + * + * @param {string[]} codecs + * An array of codec strings to translate + * @return {string[]} + * The translated array of codec strings + */ - if (!media.endList) { - return Infinity; - } // Since this is a VOD video, it is safe to rely on the media source's duration (if - // available). If it's not available, fall back to a playlist-calculated estimate. +var translateLegacyCodecs = function translateLegacyCodecs(codecs) { + return codecs.map(translateLegacyCodec); +}; +/** + * Replace codecs in the codec string with the old apple-style `avc1.
.
` to the + * standard `avc1.`. + * + * @param {string} codecString + * The codec string + * @return {string} + * The codec string with old apple-style codecs replaced + * + * @private + */ - if (this.mediaSource) { - return this.mediaSource.duration; - } - return Vhs$1.Playlist.duration(media); - } - /** - * check the seekable range - * - * @return {TimeRange} the seekable range - */ +var mapLegacyAvcCodecs = function mapLegacyAvcCodecs(codecString) { + return codecString.replace(/avc1\.(\d+)\.(\d+)/i, function (match) { + return translateLegacyCodecs([match])[0]; + }); +}; +/** + * @typedef {Object} ParsedCodecInfo + * @property {number} codecCount + * Number of codecs parsed + * @property {string} [videoCodec] + * Parsed video codec (if found) + * @property {string} [videoObjectTypeIndicator] + * Video object type indicator (if found) + * @property {string|null} audioProfile + * Audio profile + */ - seekable() { - return this.seekable_; +/** + * Parses a codec string to retrieve the number of codecs specified, the video codec and + * object type indicator, and the audio profile. + * + * @param {string} [codecString] + * The codec string to parse + * @return {ParsedCodecInfo} + * Parsed codec info + */ + +var parseCodecs = function parseCodecs(codecString) { + if (codecString === void 0) { + codecString = ''; } - onSyncInfoUpdate_() { - let audioSeekable; // TODO check for creation of both source buffers before updating seekable - // - // A fix was made to this function where a check for - // this.sourceUpdater_.hasCreatedSourceBuffers - // was added to ensure that both source buffers were created before seekable was - // updated. However, it originally had a bug where it was checking for a true and - // returning early instead of checking for false. Setting it to check for false to - // return early though created other issues. A call to play() would check for seekable - // end without verifying that a seekable range was present. In addition, even checking - // for that didn't solve some issues, as handleFirstPlay is sometimes worked around - // due to a media update calling load on the segment loaders, skipping a seek to live, - // thereby starting live streams at the beginning of the stream rather than at the end. - // - // This conditional should be fixed to wait for the creation of two source buffers at - // the same time as the other sections of code are fixed to properly seek to live and - // not throw an error due to checking for a seekable end when no seekable range exists. - // - // For now, fall back to the older behavior, with the understanding that the seekable - // range may not be completely correct, leading to a suboptimal initial live point. - if (!this.mainPlaylistLoader_) { - return; - } - let media = this.mainPlaylistLoader_.media(); - if (!media) { - return; - } - let expired = this.syncController_.getExpiredTime(media, this.duration()); - if (expired === null) { - // not enough information to update seekable - return; - } - const main = this.mainPlaylistLoader_.main; - const mainSeekable = Vhs$1.Playlist.seekable(media, expired, Vhs$1.Playlist.liveEdgeDelay(main, media)); - if (mainSeekable.length === 0) { - return; - } - if (this.mediaTypes_.AUDIO.activePlaylistLoader) { - media = this.mediaTypes_.AUDIO.activePlaylistLoader.media(); - expired = this.syncController_.getExpiredTime(media, this.duration()); - if (expired === null) { - return; - } - audioSeekable = Vhs$1.Playlist.seekable(media, expired, Vhs$1.Playlist.liveEdgeDelay(main, media)); - if (audioSeekable.length === 0) { - return; - } - } - let oldEnd; - let oldStart; - if (this.seekable_ && this.seekable_.length) { - oldEnd = this.seekable_.end(0); - oldStart = this.seekable_.start(0); - } - if (!audioSeekable) { - // seekable has been calculated based on buffering video data so it - // can be returned directly - this.seekable_ = mainSeekable; - } else if (audioSeekable.start(0) > mainSeekable.end(0) || mainSeekable.start(0) > audioSeekable.end(0)) { - // seekables are pretty far off, rely on main - this.seekable_ = mainSeekable; - } else { - this.seekable_ = createTimeRanges([[audioSeekable.start(0) > mainSeekable.start(0) ? audioSeekable.start(0) : mainSeekable.start(0), audioSeekable.end(0) < mainSeekable.end(0) ? audioSeekable.end(0) : mainSeekable.end(0)]]); - } // seekable is the same as last time + var codecs = codecString.split(','); + var result = []; + codecs.forEach(function (codec) { + codec = codec.trim(); + var codecType; + mediaTypes.forEach(function (name) { + var match = regexs[name].exec(codec.toLowerCase()); - if (this.seekable_ && this.seekable_.length) { - if (this.seekable_.end(0) === oldEnd && this.seekable_.start(0) === oldStart) { + if (!match || match.length <= 1) { return; } - } - this.logger_(`seekable updated [${printableRange(this.seekable_)}]`); - this.tech_.trigger('seekablechanged'); - } - /** - * Update the player duration - */ - - updateDuration(isLive) { - if (this.updateDuration_) { - this.mediaSource.removeEventListener('sourceopen', this.updateDuration_); - this.updateDuration_ = null; - } - if (this.mediaSource.readyState !== 'open') { - this.updateDuration_ = this.updateDuration.bind(this, isLive); - this.mediaSource.addEventListener('sourceopen', this.updateDuration_); - return; - } - if (isLive) { - const seekable = this.seekable(); - if (!seekable.length) { - return; - } // Even in the case of a live playlist, the native MediaSource's duration should not - // be set to Infinity (even though this would be expected for a live playlist), since - // setting the native MediaSource's duration to infinity ends up with consequences to - // seekable behavior. See https://github.com/w3c/media-source/issues/5 for details. - // - // This is resolved in the spec by https://github.com/w3c/media-source/pull/92, - // however, few browsers have support for setLiveSeekableRange() - // https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/setLiveSeekableRange - // - // Until a time when the duration of the media source can be set to infinity, and a - // seekable range specified across browsers, the duration should be greater than or - // equal to the last possible seekable value. - // MediaSource duration starts as NaN - // It is possible (and probable) that this case will never be reached for many - // sources, since the MediaSource reports duration as the highest value without - // accounting for timestamp offset. For example, if the timestamp offset is -100 and - // we buffered times 0 to 100 with real times of 100 to 200, even though current - // time will be between 0 and 100, the native media source may report the duration - // as 200. However, since we report duration separate from the media source (as - // Infinity), and as long as the native media source duration value is greater than - // our reported seekable range, seeks will work as expected. The large number as - // duration for live is actually a strategy used by some players to work around the - // issue of live seekable ranges cited above. - if (isNaN(this.mediaSource.duration) || this.mediaSource.duration < seekable.end(seekable.length - 1)) { - this.sourceUpdater_.setDuration(seekable.end(seekable.length - 1)); - } - return; - } - const buffered = this.tech_.buffered(); - let duration = Vhs$1.Playlist.duration(this.mainPlaylistLoader_.media()); - if (buffered.length > 0) { - duration = Math.max(duration, buffered.end(buffered.length - 1)); - } - if (this.mediaSource.duration !== duration) { - this.sourceUpdater_.setDuration(duration); - } - } - /** - * dispose of the PlaylistController and everything - * that it controls - */ + codecType = name; // maintain codec case - dispose() { - this.trigger('dispose'); - this.decrypter_.terminate(); - this.mainPlaylistLoader_.dispose(); - this.mainSegmentLoader_.dispose(); - this.contentSteeringController_.dispose(); - if (this.loadOnPlay_) { - this.tech_.off('play', this.loadOnPlay_); - } - ['AUDIO', 'SUBTITLES'].forEach(type => { - const groups = this.mediaTypes_[type].groups; - for (const id in groups) { - groups[id].forEach(group => { - if (group.playlistLoader) { - group.playlistLoader.dispose(); - } - }); - } + var type = codec.substring(0, match[1].length); + var details = codec.replace(type, ''); + result.push({ + type: type, + details: details, + mediaType: name + }); }); - this.audioSegmentLoader_.dispose(); - this.subtitleSegmentLoader_.dispose(); - this.sourceUpdater_.dispose(); - this.timelineChangeController_.dispose(); - this.stopABRTimer_(); - if (this.updateDuration_) { - this.mediaSource.removeEventListener('sourceopen', this.updateDuration_); + + if (!codecType) { + result.push({ + type: codec, + details: '', + mediaType: 'unknown' + }); } - this.mediaSource.removeEventListener('durationchange', this.handleDurationChange_); // load the media source into the player + }); + return result; +}; +/** + * Returns a ParsedCodecInfo object for the default alternate audio playlist if there is + * a default alternate audio playlist for the provided audio group. + * + * @param {Object} master + * The master playlist + * @param {string} audioGroupId + * ID of the audio group for which to find the default codec info + * @return {ParsedCodecInfo} + * Parsed codec info + */ - this.mediaSource.removeEventListener('sourceopen', this.handleSourceOpen_); - this.mediaSource.removeEventListener('sourceended', this.handleSourceEnded_); - this.off(); +var codecsFromDefault = function codecsFromDefault(master, audioGroupId) { + if (!master.mediaGroups.AUDIO || !audioGroupId) { + return null; } - /** - * return the main playlist object if we have one - * - * @return {Object} the main playlist object that we parsed - */ - main() { - return this.mainPlaylistLoader_.main; - } - /** - * return the currently selected playlist - * - * @return {Object} the currently selected playlist object that we parsed - */ + var audioGroup = master.mediaGroups.AUDIO[audioGroupId]; - media() { - // playlist loader will not return media if it has not been fully loaded - return this.mainPlaylistLoader_.media() || this.initialMedia_; + if (!audioGroup) { + return null; } - areMediaTypesKnown_() { - const usingAudioLoader = !!this.mediaTypes_.AUDIO.activePlaylistLoader; - const hasMainMediaInfo = !!this.mainSegmentLoader_.getCurrentMediaInfo_(); // if we are not using an audio loader, then we have audio media info - // otherwise check on the segment loader. - const hasAudioMediaInfo = !usingAudioLoader ? true : !!this.audioSegmentLoader_.getCurrentMediaInfo_(); // one or both loaders has not loaded sufficently to get codecs + for (var name in audioGroup) { + var audioType = audioGroup[name]; - if (!hasMainMediaInfo || !hasAudioMediaInfo) { - return false; + if (audioType.default && audioType.playlists) { + // codec should be the same for all playlists within the audio type + return parseCodecs(audioType.playlists[0].attributes.CODECS); } - return true; } - getCodecsOrExclude_() { - const media = { - main: this.mainSegmentLoader_.getCurrentMediaInfo_() || {}, - audio: this.audioSegmentLoader_.getCurrentMediaInfo_() || {} - }; - const playlist = this.mainSegmentLoader_.getPendingSegmentPlaylist() || this.media(); // set "main" media equal to video - media.video = media.main; - const playlistCodecs = codecsForPlaylist(this.main(), playlist); - const codecs = {}; - const usingAudioLoader = !!this.mediaTypes_.AUDIO.activePlaylistLoader; - if (media.main.hasVideo) { - codecs.video = playlistCodecs.video || media.main.videoCodec || _videojs_vhs_utils_es_codecs_js__WEBPACK_IMPORTED_MODULE_9__.DEFAULT_VIDEO_CODEC; - } - if (media.main.isMuxed) { - codecs.video += `,${playlistCodecs.audio || media.main.audioCodec || _videojs_vhs_utils_es_codecs_js__WEBPACK_IMPORTED_MODULE_9__.DEFAULT_AUDIO_CODEC}`; - } - if (media.main.hasAudio && !media.main.isMuxed || media.audio.hasAudio || usingAudioLoader) { - codecs.audio = playlistCodecs.audio || media.main.audioCodec || media.audio.audioCodec || _videojs_vhs_utils_es_codecs_js__WEBPACK_IMPORTED_MODULE_9__.DEFAULT_AUDIO_CODEC; // set audio isFmp4 so we use the correct "supports" function below + return null; +}; +var isVideoCodec = function isVideoCodec(codec) { + if (codec === void 0) { + codec = ''; + } - media.audio.isFmp4 = media.main.hasAudio && !media.main.isMuxed ? media.main.isFmp4 : media.audio.isFmp4; - } // no codecs, no playback. + return regexs.video.test(codec.trim().toLowerCase()); +}; +var isAudioCodec = function isAudioCodec(codec) { + if (codec === void 0) { + codec = ''; + } - if (!codecs.audio && !codecs.video) { - this.excludePlaylist({ - playlistToExclude: playlist, - error: { - message: 'Could not determine codecs for playlist.' - }, - playlistExclusionDuration: Infinity - }); - return; - } // fmp4 relies on browser support, while ts relies on muxer support + return regexs.audio.test(codec.trim().toLowerCase()); +}; +var isTextCodec = function isTextCodec(codec) { + if (codec === void 0) { + codec = ''; + } - const supportFunction = (isFmp4, codec) => isFmp4 ? (0,_videojs_vhs_utils_es_codecs_js__WEBPACK_IMPORTED_MODULE_9__.browserSupportsCodec)(codec) : (0,_videojs_vhs_utils_es_codecs_js__WEBPACK_IMPORTED_MODULE_9__.muxerSupportsCodec)(codec); - const unsupportedCodecs = {}; - let unsupportedAudio; - ['video', 'audio'].forEach(function (type) { - if (codecs.hasOwnProperty(type) && !supportFunction(media[type].isFmp4, codecs[type])) { - const supporter = media[type].isFmp4 ? 'browser' : 'muxer'; - unsupportedCodecs[supporter] = unsupportedCodecs[supporter] || []; - unsupportedCodecs[supporter].push(codecs[type]); - if (type === 'audio') { - unsupportedAudio = supporter; - } - } - }); - if (usingAudioLoader && unsupportedAudio && playlist.attributes.AUDIO) { - const audioGroup = playlist.attributes.AUDIO; - this.main().playlists.forEach(variant => { - const variantAudioGroup = variant.attributes && variant.attributes.AUDIO; - if (variantAudioGroup === audioGroup && variant !== playlist) { - variant.excludeUntil = Infinity; - } - }); - this.logger_(`excluding audio group ${audioGroup} as ${unsupportedAudio} does not support codec(s): "${codecs.audio}"`); - } // if we have any unsupported codecs exclude this playlist. + return regexs.text.test(codec.trim().toLowerCase()); +}; +var getMimeForCodec = function getMimeForCodec(codecString) { + if (!codecString || typeof codecString !== 'string') { + return; + } - if (Object.keys(unsupportedCodecs).length) { - const message = Object.keys(unsupportedCodecs).reduce((acc, supporter) => { - if (acc) { - acc += ', '; - } - acc += `${supporter} does not support codec(s): "${unsupportedCodecs[supporter].join(',')}"`; - return acc; - }, '') + '.'; - this.excludePlaylist({ - playlistToExclude: playlist, - error: { - internal: true, - message - }, - playlistExclusionDuration: Infinity - }); - return; - } // check if codec switching is happening + var codecs = codecString.toLowerCase().split(',').map(function (c) { + return translateLegacyCodec(c.trim()); + }); // default to video type - if (this.sourceUpdater_.hasCreatedSourceBuffers() && !this.sourceUpdater_.canChangeType()) { - const switchMessages = []; - ['video', 'audio'].forEach(type => { - const newCodec = ((0,_videojs_vhs_utils_es_codecs_js__WEBPACK_IMPORTED_MODULE_9__.parseCodecs)(this.sourceUpdater_.codecs[type] || '')[0] || {}).type; - const oldCodec = ((0,_videojs_vhs_utils_es_codecs_js__WEBPACK_IMPORTED_MODULE_9__.parseCodecs)(codecs[type] || '')[0] || {}).type; - if (newCodec && oldCodec && newCodec.toLowerCase() !== oldCodec.toLowerCase()) { - switchMessages.push(`"${this.sourceUpdater_.codecs[type]}" -> "${codecs[type]}"`); - } - }); - if (switchMessages.length) { - this.excludePlaylist({ - playlistToExclude: playlist, - error: { - message: `Codec switching not supported: ${switchMessages.join(', ')}.`, - internal: true - }, - playlistExclusionDuration: Infinity - }); - return; - } - } // TODO: when using the muxer shouldn't we just return - // the codecs that the muxer outputs? + var type = 'video'; // only change to audio type if the only codec we have is + // audio - return codecs; + if (codecs.length === 1 && isAudioCodec(codecs[0])) { + type = 'audio'; + } else if (codecs.length === 1 && isTextCodec(codecs[0])) { + // text uses application/ for now + type = 'application'; + } // default the container to mp4 + + + var container = 'mp4'; // every codec must be able to go into the container + // for that container to be the correct one + + if (codecs.every(function (c) { + return regexs.mp4.test(c); + })) { + container = 'mp4'; + } else if (codecs.every(function (c) { + return regexs.webm.test(c); + })) { + container = 'webm'; + } else if (codecs.every(function (c) { + return regexs.ogg.test(c); + })) { + container = 'ogg'; } - /** - * Create source buffers and exlude any incompatible renditions. - * - * @private - */ - tryToCreateSourceBuffers_() { - // media source is not ready yet or sourceBuffers are already - // created. - if (this.mediaSource.readyState !== 'open' || this.sourceUpdater_.hasCreatedSourceBuffers()) { - return; - } - if (!this.areMediaTypesKnown_()) { - return; - } - const codecs = this.getCodecsOrExclude_(); // no codecs means that the playlist was excluded + return type + "/" + container + ";codecs=\"" + codecString + "\""; +}; +var browserSupportsCodec = function browserSupportsCodec(codecString) { + if (codecString === void 0) { + codecString = ''; + } - if (!codecs) { - return; - } - this.sourceUpdater_.createSourceBuffers(codecs); - const codecString = [codecs.video, codecs.audio].filter(Boolean).join(','); - this.excludeIncompatibleVariants_(codecString); + return (global_window__WEBPACK_IMPORTED_MODULE_0___default().MediaSource) && (global_window__WEBPACK_IMPORTED_MODULE_0___default().MediaSource).isTypeSupported && global_window__WEBPACK_IMPORTED_MODULE_0___default().MediaSource.isTypeSupported(getMimeForCodec(codecString)) || false; +}; +var muxerSupportsCodec = function muxerSupportsCodec(codecString) { + if (codecString === void 0) { + codecString = ''; } - /** - * Excludes playlists with codecs that are unsupported by the muxer and browser. - */ - excludeUnsupportedVariants_() { - const playlists = this.main().playlists; - const ids = []; // TODO: why don't we have a property to loop through all - // playlist? Why did we ever mix indexes and keys? + return codecString.toLowerCase().split(',').every(function (codec) { + codec = codec.trim(); // any match is supported. - Object.keys(playlists).forEach(key => { - const variant = playlists[key]; // check if we already processed this playlist. + for (var i = 0; i < upperMediaTypes.length; i++) { + var type = upperMediaTypes[i]; - if (ids.indexOf(variant.id) !== -1) { - return; - } - ids.push(variant.id); - const codecs = codecsForPlaylist(this.main, variant); - const unsupported = []; - if (codecs.audio && !(0,_videojs_vhs_utils_es_codecs_js__WEBPACK_IMPORTED_MODULE_9__.muxerSupportsCodec)(codecs.audio) && !(0,_videojs_vhs_utils_es_codecs_js__WEBPACK_IMPORTED_MODULE_9__.browserSupportsCodec)(codecs.audio)) { - unsupported.push(`audio codec ${codecs.audio}`); - } - if (codecs.video && !(0,_videojs_vhs_utils_es_codecs_js__WEBPACK_IMPORTED_MODULE_9__.muxerSupportsCodec)(codecs.video) && !(0,_videojs_vhs_utils_es_codecs_js__WEBPACK_IMPORTED_MODULE_9__.browserSupportsCodec)(codecs.video)) { - unsupported.push(`video codec ${codecs.video}`); - } - if (codecs.text && codecs.text === 'stpp.ttml.im1t') { - unsupported.push(`text codec ${codecs.text}`); - } - if (unsupported.length) { - variant.excludeUntil = Infinity; - this.logger_(`excluding ${variant.id} for unsupported: ${unsupported.join(', ')}`); + if (regexs["muxer" + type].test(codec)) { + return true; } - }); - } - /** - * Exclude playlists that are known to be codec or - * stream-incompatible with the SourceBuffer configuration. For - * instance, Media Source Extensions would cause the video element to - * stall waiting for video data if you switched from a variant with - * video and audio to an audio-only one. - * - * @param {Object} media a media playlist compatible with the current - * set of SourceBuffers. Variants in the current main playlist that - * do not appear to have compatible codec or stream configurations - * will be excluded from the default playlist selection algorithm - * indefinitely. - * @private - */ + } - excludeIncompatibleVariants_(codecString) { - const ids = []; - const playlists = this.main().playlists; - const codecs = unwrapCodecList((0,_videojs_vhs_utils_es_codecs_js__WEBPACK_IMPORTED_MODULE_9__.parseCodecs)(codecString)); - const codecCount_ = codecCount(codecs); - const videoDetails = codecs.video && (0,_videojs_vhs_utils_es_codecs_js__WEBPACK_IMPORTED_MODULE_9__.parseCodecs)(codecs.video)[0] || null; - const audioDetails = codecs.audio && (0,_videojs_vhs_utils_es_codecs_js__WEBPACK_IMPORTED_MODULE_9__.parseCodecs)(codecs.audio)[0] || null; - Object.keys(playlists).forEach(key => { - const variant = playlists[key]; // check if we already processed this playlist. - // or it if it is already excluded forever. + return false; + }); +}; +var DEFAULT_AUDIO_CODEC = 'mp4a.40.2'; +var DEFAULT_VIDEO_CODEC = 'avc1.4d400d'; - if (ids.indexOf(variant.id) !== -1 || variant.excludeUntil === Infinity) { - return; - } - ids.push(variant.id); - const exclusionReasons = []; // get codecs from the playlist for this variant +/***/ }), - const variantCodecs = codecsForPlaylist(this.mainPlaylistLoader_.main, variant); - const variantCodecCount = codecCount(variantCodecs); // if no codecs are listed, we cannot determine that this - // variant is incompatible. Wait for mux.js to probe +/***/ "./node_modules/video.js/node_modules/@videojs/vhs-utils/es/containers.js": +/*!********************************************************************************!*\ + !*** ./node_modules/video.js/node_modules/@videojs/vhs-utils/es/containers.js ***! + \********************************************************************************/ +/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { - if (!variantCodecs.audio && !variantCodecs.video) { - return; - } // TODO: we can support this by removing the - // old media source and creating a new one, but it will take some work. - // The number of streams cannot change +"use strict"; +__webpack_require__.r(__webpack_exports__); +/* harmony export */ __webpack_require__.d(__webpack_exports__, { +/* harmony export */ detectContainerForBytes: () => (/* binding */ detectContainerForBytes), +/* harmony export */ isLikely: () => (/* binding */ isLikely), +/* harmony export */ isLikelyFmp4MediaSegment: () => (/* binding */ isLikelyFmp4MediaSegment) +/* harmony export */ }); +/* harmony import */ var _byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./byte-helpers.js */ "./node_modules/video.js/node_modules/@videojs/vhs-utils/es/byte-helpers.js"); +/* harmony import */ var _mp4_helpers_js__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./mp4-helpers.js */ "./node_modules/video.js/node_modules/@videojs/vhs-utils/es/mp4-helpers.js"); +/* harmony import */ var _ebml_helpers_js__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ./ebml-helpers.js */ "./node_modules/video.js/node_modules/@videojs/vhs-utils/es/ebml-helpers.js"); +/* harmony import */ var _id3_helpers_js__WEBPACK_IMPORTED_MODULE_3__ = __webpack_require__(/*! ./id3-helpers.js */ "./node_modules/video.js/node_modules/@videojs/vhs-utils/es/id3-helpers.js"); +/* harmony import */ var _nal_helpers_js__WEBPACK_IMPORTED_MODULE_4__ = __webpack_require__(/*! ./nal-helpers.js */ "./node_modules/video.js/node_modules/@videojs/vhs-utils/es/nal-helpers.js"); - if (variantCodecCount !== codecCount_) { - exclusionReasons.push(`codec count "${variantCodecCount}" !== "${codecCount_}"`); - } // only exclude playlists by codec change, if codecs cannot switch - // during playback. - if (!this.sourceUpdater_.canChangeType()) { - const variantVideoDetails = variantCodecs.video && (0,_videojs_vhs_utils_es_codecs_js__WEBPACK_IMPORTED_MODULE_9__.parseCodecs)(variantCodecs.video)[0] || null; - const variantAudioDetails = variantCodecs.audio && (0,_videojs_vhs_utils_es_codecs_js__WEBPACK_IMPORTED_MODULE_9__.parseCodecs)(variantCodecs.audio)[0] || null; // the video codec cannot change - if (variantVideoDetails && videoDetails && variantVideoDetails.type.toLowerCase() !== videoDetails.type.toLowerCase()) { - exclusionReasons.push(`video codec "${variantVideoDetails.type}" !== "${videoDetails.type}"`); - } // the audio codec cannot change - if (variantAudioDetails && audioDetails && variantAudioDetails.type.toLowerCase() !== audioDetails.type.toLowerCase()) { - exclusionReasons.push(`audio codec "${variantAudioDetails.type}" !== "${audioDetails.type}"`); - } - } - if (exclusionReasons.length) { - variant.excludeUntil = Infinity; - this.logger_(`excluding ${variant.id}: ${exclusionReasons.join(' && ')}`); - } + +var CONSTANTS = { + // "webm" string literal in hex + 'webm': (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x77, 0x65, 0x62, 0x6d]), + // "matroska" string literal in hex + 'matroska': (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x6d, 0x61, 0x74, 0x72, 0x6f, 0x73, 0x6b, 0x61]), + // "fLaC" string literal in hex + 'flac': (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x66, 0x4c, 0x61, 0x43]), + // "OggS" string literal in hex + 'ogg': (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x4f, 0x67, 0x67, 0x53]), + // ac-3 sync byte, also works for ec-3 as that is simply a codec + // of ac-3 + 'ac3': (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x0b, 0x77]), + // "RIFF" string literal in hex used for wav and avi + 'riff': (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x52, 0x49, 0x46, 0x46]), + // "AVI" string literal in hex + 'avi': (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x41, 0x56, 0x49]), + // "WAVE" string literal in hex + 'wav': (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x57, 0x41, 0x56, 0x45]), + // "ftyp3g" string literal in hex + '3gp': (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x66, 0x74, 0x79, 0x70, 0x33, 0x67]), + // "ftyp" string literal in hex + 'mp4': (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x66, 0x74, 0x79, 0x70]), + // "styp" string literal in hex + 'fmp4': (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x73, 0x74, 0x79, 0x70]), + // "ftypqt" string literal in hex + 'mov': (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x66, 0x74, 0x79, 0x70, 0x71, 0x74]), + // moov string literal in hex + 'moov': (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x6D, 0x6F, 0x6F, 0x76]), + // moof string literal in hex + 'moof': (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x6D, 0x6F, 0x6F, 0x66]) +}; +var _isLikely = { + aac: function aac(bytes) { + var offset = (0,_id3_helpers_js__WEBPACK_IMPORTED_MODULE_3__.getId3Offset)(bytes); + return (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, [0xFF, 0x10], { + offset: offset, + mask: [0xFF, 0x16] }); - } - updateAdCues_(media) { - let offset = 0; - const seekable = this.seekable(); - if (seekable.length) { - offset = seekable.start(0); - } - updateAdCues(media, this.cueTagsTrack_, offset); - } - /** - * Calculates the desired forward buffer length based on current time - * - * @return {number} Desired forward buffer length in seconds - */ + }, + mp3: function mp3(bytes) { + var offset = (0,_id3_helpers_js__WEBPACK_IMPORTED_MODULE_3__.getId3Offset)(bytes); + return (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, [0xFF, 0x02], { + offset: offset, + mask: [0xFF, 0x06] + }); + }, + webm: function webm(bytes) { + var docType = (0,_ebml_helpers_js__WEBPACK_IMPORTED_MODULE_2__.findEbml)(bytes, [_ebml_helpers_js__WEBPACK_IMPORTED_MODULE_2__.EBML_TAGS.EBML, _ebml_helpers_js__WEBPACK_IMPORTED_MODULE_2__.EBML_TAGS.DocType])[0]; // check if DocType EBML tag is webm - goalBufferLength() { - const currentTime = this.tech_.currentTime(); - const initial = Config.GOAL_BUFFER_LENGTH; - const rate = Config.GOAL_BUFFER_LENGTH_RATE; - const max = Math.max(initial, Config.MAX_GOAL_BUFFER_LENGTH); - return Math.min(initial + currentTime * rate, max); - } - /** - * Calculates the desired buffer low water line based on current time - * - * @return {number} Desired buffer low water line in seconds - */ + return (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(docType, CONSTANTS.webm); + }, + mkv: function mkv(bytes) { + var docType = (0,_ebml_helpers_js__WEBPACK_IMPORTED_MODULE_2__.findEbml)(bytes, [_ebml_helpers_js__WEBPACK_IMPORTED_MODULE_2__.EBML_TAGS.EBML, _ebml_helpers_js__WEBPACK_IMPORTED_MODULE_2__.EBML_TAGS.DocType])[0]; // check if DocType EBML tag is matroska - bufferLowWaterLine() { - const currentTime = this.tech_.currentTime(); - const initial = Config.BUFFER_LOW_WATER_LINE; - const rate = Config.BUFFER_LOW_WATER_LINE_RATE; - const max = Math.max(initial, Config.MAX_BUFFER_LOW_WATER_LINE); - const newMax = Math.max(initial, Config.EXPERIMENTAL_MAX_BUFFER_LOW_WATER_LINE); - return Math.min(initial + currentTime * rate, this.bufferBasedABR ? newMax : max); - } - bufferHighWaterLine() { - return Config.BUFFER_HIGH_WATER_LINE; - } - addDateRangesToTextTrack_(dateRanges) { - createMetadataTrackIfNotExists(this.inbandTextTracks_, 'com.apple.streaming', this.tech_); - addDateRangeMetadata({ - inbandTextTracks: this.inbandTextTracks_, - dateRanges + return (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(docType, CONSTANTS.matroska); + }, + mp4: function mp4(bytes) { + // if this file is another base media file format, it is not mp4 + if (_isLikely['3gp'](bytes) || _isLikely.mov(bytes)) { + return false; + } // if this file starts with a ftyp or styp box its mp4 + + + if ((0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, CONSTANTS.mp4, { + offset: 4 + }) || (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, CONSTANTS.fmp4, { + offset: 4 + })) { + return true; + } // if this file starts with a moof/moov box its mp4 + + + if ((0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, CONSTANTS.moof, { + offset: 4 + }) || (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, CONSTANTS.moov, { + offset: 4 + })) { + return true; + } + }, + mov: function mov(bytes) { + return (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, CONSTANTS.mov, { + offset: 4 }); - } - addMetadataToTextTrack(dispatchType, metadataArray, videoDuration) { - const timestampOffset = this.sourceUpdater_.videoBuffer ? this.sourceUpdater_.videoTimestampOffset() : this.sourceUpdater_.audioTimestampOffset(); // There's potentially an issue where we could double add metadata if there's a muxed - // audio/video source with a metadata track, and an alt audio with a metadata track. - // However, this probably won't happen, and if it does it can be handled then. + }, + '3gp': function gp(bytes) { + return (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, CONSTANTS['3gp'], { + offset: 4 + }); + }, + ac3: function ac3(bytes) { + var offset = (0,_id3_helpers_js__WEBPACK_IMPORTED_MODULE_3__.getId3Offset)(bytes); + return (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, CONSTANTS.ac3, { + offset: offset + }); + }, + ts: function ts(bytes) { + if (bytes.length < 189 && bytes.length >= 1) { + return bytes[0] === 0x47; + } - createMetadataTrackIfNotExists(this.inbandTextTracks_, dispatchType, this.tech_); - addMetadata({ - inbandTextTracks: this.inbandTextTracks_, - metadataArray, - timestampOffset, - videoDuration + var i = 0; // check the first 376 bytes for two matching sync bytes + + while (i + 188 < bytes.length && i < 188) { + if (bytes[i] === 0x47 && bytes[i + 188] === 0x47) { + return true; + } + + i += 1; + } + + return false; + }, + flac: function flac(bytes) { + var offset = (0,_id3_helpers_js__WEBPACK_IMPORTED_MODULE_3__.getId3Offset)(bytes); + return (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, CONSTANTS.flac, { + offset: offset }); + }, + ogg: function ogg(bytes) { + return (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, CONSTANTS.ogg); + }, + avi: function avi(bytes) { + return (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, CONSTANTS.riff) && (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, CONSTANTS.avi, { + offset: 8 + }); + }, + wav: function wav(bytes) { + return (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, CONSTANTS.riff) && (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, CONSTANTS.wav, { + offset: 8 + }); + }, + 'h264': function h264(bytes) { + // find seq_parameter_set_rbsp + return (0,_nal_helpers_js__WEBPACK_IMPORTED_MODULE_4__.findH264Nal)(bytes, 7, 3).length; + }, + 'h265': function h265(bytes) { + // find video_parameter_set_rbsp or seq_parameter_set_rbsp + return (0,_nal_helpers_js__WEBPACK_IMPORTED_MODULE_4__.findH265Nal)(bytes, [32, 33], 3).length; } - pathwayAttribute_(playlist) { - return playlist.attributes['PATHWAY-ID'] || playlist.attributes.serviceLocation; - } - /** - * Initialize content steering listeners and apply the tag properties. - */ +}; // get all the isLikely functions +// but make sure 'ts' is above h264 and h265 +// but below everything else as it is the least specific - initContentSteeringController_() { - const initialMain = this.main(); - if (!initialMain.contentSteering) { - return; - } - const updateSteeringValues = main => { - for (const playlist of main.playlists) { - this.contentSteeringController_.addAvailablePathway(this.pathwayAttribute_(playlist)); - } - this.contentSteeringController_.assignTagProperties(main.uri, main.contentSteering); - }; - updateSteeringValues(initialMain); - this.contentSteeringController_.on('content-steering', this.excludeThenChangePathway_.bind(this)); // We need to ensure we update the content steering values when a new - // manifest is loaded in live DASH with content steering. +var isLikelyTypes = Object.keys(_isLikely) // remove ts, h264, h265 +.filter(function (t) { + return t !== 'ts' && t !== 'h264' && t !== 'h265'; +}) // add it back to the bottom +.concat(['ts', 'h264', 'h265']); // make sure we are dealing with uint8 data. - if (this.sourceType_ === 'dash') { - this.mainPlaylistLoader_.on('mediaupdatetimeout', () => { - this.mainPlaylistLoader_.refreshMedia_(this.mainPlaylistLoader_.media().id); // clear past values +isLikelyTypes.forEach(function (type) { + var isLikelyFn = _isLikely[type]; - this.contentSteeringController_.abort(); - this.contentSteeringController_.clearTTLTimeout_(); - this.contentSteeringController_.clearAvailablePathways(); - updateSteeringValues(this.main()); - }); - } // Do this at startup only, after that the steering requests are managed by the Content Steering class. - // DASH queryBeforeStart scenarios will be handled by the Content Steering class. + _isLikely[type] = function (bytes) { + return isLikelyFn((0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)(bytes)); + }; +}); // export after wrapping - if (!this.contentSteeringController_.queryBeforeStart) { - this.tech_.one('canplay', () => { - this.contentSteeringController_.requestSteeringManifest(); - }); - } - } - /** - * Simple exclude and change playlist logic for content steering. - */ +var isLikely = _isLikely; // A useful list of file signatures can be found here +// https://en.wikipedia.org/wiki/List_of_file_signatures - excludeThenChangePathway_() { - const currentPathway = this.contentSteeringController_.getPathway(); - if (!currentPathway) { - return; - } - const main = this.main(); - const playlists = main.playlists; - const ids = new Set(); - let didEnablePlaylists = false; - Object.keys(playlists).forEach(key => { - const variant = playlists[key]; - const pathwayId = this.pathwayAttribute_(variant); - const differentPathwayId = pathwayId && currentPathway !== pathwayId; - const steeringExclusion = variant.excludeUntil === Infinity && variant.lastExcludeReason_ === 'content-steering'; - if (steeringExclusion && !differentPathwayId) { - delete variant.excludeUntil; - delete variant.lastExcludeReason_; - didEnablePlaylists = true; - } - const noExcludeUntil = !variant.excludeUntil && variant.excludeUntil !== Infinity; - const shouldExclude = !ids.has(variant.id) && differentPathwayId && noExcludeUntil; - if (!shouldExclude) { - return; - } - ids.add(variant.id); - variant.excludeUntil = Infinity; - variant.lastExcludeReason_ = 'content-steering'; // TODO: kind of spammy, maybe move this. +var detectContainerForBytes = function detectContainerForBytes(bytes) { + bytes = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)(bytes); - this.logger_(`excluding ${variant.id} for ${variant.lastExcludeReason_}`); - }); - if (this.contentSteeringController_.manifestType_ === 'DASH') { - Object.keys(this.mediaTypes_).forEach(key => { - const type = this.mediaTypes_[key]; - if (type.activePlaylistLoader) { - const currentPlaylist = type.activePlaylistLoader.media_; // Check if the current media playlist matches the current CDN + for (var i = 0; i < isLikelyTypes.length; i++) { + var type = isLikelyTypes[i]; - if (currentPlaylist && currentPlaylist.attributes.serviceLocation !== currentPathway) { - didEnablePlaylists = true; - } - } - }); - } - if (didEnablePlaylists) { - this.changeSegmentPathway_(); + if (isLikely[type](bytes)) { + return type; } } - /** - * Changes the current playlists for audio, video and subtitles after a new pathway - * is chosen from content steering. - */ - changeSegmentPathway_() { - const nextPlaylist = this.selectPlaylist(); - this.pauseLoading(); // Switch audio and text track playlists if necessary in DASH + return ''; +}; // fmp4 is not a container - if (this.contentSteeringController_.manifestType_ === 'DASH') { - this.switchMediaForDASHContentSteering_(); - } - this.switchMedia_(nextPlaylist, 'content-steering'); - } -} +var isLikelyFmp4MediaSegment = function isLikelyFmp4MediaSegment(bytes) { + return (0,_mp4_helpers_js__WEBPACK_IMPORTED_MODULE_1__.findBox)(bytes, ['moof']).length > 0; +}; -/** - * Returns a function that acts as the Enable/disable playlist function. - * - * @param {PlaylistLoader} loader - The main playlist loader - * @param {string} playlistID - id of the playlist - * @param {Function} changePlaylistFn - A function to be called after a - * playlist's enabled-state has been changed. Will NOT be called if a - * playlist's enabled-state is unchanged - * @param {boolean=} enable - Value to set the playlist enabled-state to - * or if undefined returns the current enabled-state for the playlist - * @return {Function} Function for setting/getting enabled - */ +/***/ }), -const enableFunction = (loader, playlistID, changePlaylistFn) => enable => { - const playlist = loader.main.playlists[playlistID]; - const incompatible = isIncompatible(playlist); - const currentlyEnabled = isEnabled(playlist); - if (typeof enable === 'undefined') { - return currentlyEnabled; - } - if (enable) { - delete playlist.disabled; - } else { - playlist.disabled = true; - } - if (enable !== currentlyEnabled && !incompatible) { - // Ensure the outside world knows about our changes - changePlaylistFn(); - if (enable) { - loader.trigger('renditionenabled'); - } else { - loader.trigger('renditiondisabled'); - } - } - return enable; +/***/ "./node_modules/video.js/node_modules/@videojs/vhs-utils/es/ebml-helpers.js": +/*!**********************************************************************************!*\ + !*** ./node_modules/video.js/node_modules/@videojs/vhs-utils/es/ebml-helpers.js ***! + \**********************************************************************************/ +/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { + +"use strict"; +__webpack_require__.r(__webpack_exports__); +/* harmony export */ __webpack_require__.d(__webpack_exports__, { +/* harmony export */ EBML_TAGS: () => (/* binding */ EBML_TAGS), +/* harmony export */ decodeBlock: () => (/* binding */ decodeBlock), +/* harmony export */ findEbml: () => (/* binding */ findEbml), +/* harmony export */ parseData: () => (/* binding */ parseData), +/* harmony export */ parseTracks: () => (/* binding */ parseTracks) +/* harmony export */ }); +/* harmony import */ var _byte_helpers__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./byte-helpers */ "./node_modules/video.js/node_modules/@videojs/vhs-utils/es/byte-helpers.js"); +/* harmony import */ var _codec_helpers_js__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./codec-helpers.js */ "./node_modules/video.js/node_modules/@videojs/vhs-utils/es/codec-helpers.js"); + + // relevant specs for this parser: +// https://matroska-org.github.io/libebml/specs.html +// https://www.matroska.org/technical/elements.html +// https://www.webmproject.org/docs/container/ + +var EBML_TAGS = { + EBML: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x1A, 0x45, 0xDF, 0xA3]), + DocType: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x42, 0x82]), + Segment: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x18, 0x53, 0x80, 0x67]), + SegmentInfo: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x15, 0x49, 0xA9, 0x66]), + Tracks: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x16, 0x54, 0xAE, 0x6B]), + Track: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0xAE]), + TrackNumber: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0xd7]), + DefaultDuration: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x23, 0xe3, 0x83]), + TrackEntry: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0xAE]), + TrackType: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x83]), + FlagDefault: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x88]), + CodecID: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x86]), + CodecPrivate: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x63, 0xA2]), + VideoTrack: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0xe0]), + AudioTrack: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0xe1]), + // Not used yet, but will be used for live webm/mkv + // see https://www.matroska.org/technical/basics.html#block-structure + // see https://www.matroska.org/technical/basics.html#simpleblock-structure + Cluster: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x1F, 0x43, 0xB6, 0x75]), + Timestamp: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0xE7]), + TimestampScale: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x2A, 0xD7, 0xB1]), + BlockGroup: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0xA0]), + BlockDuration: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x9B]), + Block: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0xA1]), + SimpleBlock: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0xA3]) }; /** - * The representation object encapsulates the publicly visible information - * in a media playlist along with a setter/getter-type function (enabled) - * for changing the enabled-state of a particular playlist entry - * - * @class Representation + * This is a simple table to determine the length + * of things in ebml. The length is one based (starts at 1, + * rather than zero) and for every zero bit before a one bit + * we add one to length. We also need this table because in some + * case we have to xor all the length bits from another value. */ -class Representation { - constructor(vhsHandler, playlist, id) { - const { - playlistController_: pc - } = vhsHandler; - const qualityChangeFunction = pc.fastQualityChange_.bind(pc); // some playlist attributes are optional +var LENGTH_TABLE = [128, 64, 32, 16, 8, 4, 2, 1]; - if (playlist.attributes) { - const resolution = playlist.attributes.RESOLUTION; - this.width = resolution && resolution.width; - this.height = resolution && resolution.height; - this.bandwidth = playlist.attributes.BANDWIDTH; - this.frameRate = playlist.attributes['FRAME-RATE']; +var getLength = function getLength(byte) { + var len = 1; + + for (var i = 0; i < LENGTH_TABLE.length; i++) { + if (byte & LENGTH_TABLE[i]) { + break; } - this.codecs = codecsForPlaylist(pc.main(), playlist); - this.playlist = playlist; // The id is simply the ordinality of the media playlist - // within the main playlist - this.id = id; // Partially-apply the enableFunction to create a playlist- - // specific variant + len++; + } - this.enabled = enableFunction(vhsHandler.playlists, playlist.id, qualityChangeFunction); + return len; +}; // length in ebml is stored in the first 4 to 8 bits +// of the first byte. 4 for the id length and 8 for the +// data size length. Length is measured by converting the number to binary +// then 1 + the number of zeros before a 1 is encountered starting +// from the left. + + +var getvint = function getvint(bytes, offset, removeLength, signed) { + if (removeLength === void 0) { + removeLength = true; } -} -/** - * A mixin function that adds the `representations` api to an instance - * of the VhsHandler class - * - * @param {VhsHandler} vhsHandler - An instance of VhsHandler to add the - * representation API into - */ -const renditionSelectionMixin = function (vhsHandler) { - // Add a single API-specific function to the VhsHandler instance - vhsHandler.representations = () => { - const main = vhsHandler.playlistController_.main(); - const playlists = isAudioOnly(main) ? vhsHandler.playlistController_.getAudioTrackPlaylists_() : main.playlists; - if (!playlists) { - return []; - } - return playlists.filter(media => !isIncompatible(media)).map((e, i) => new Representation(vhsHandler, e, e.id)); + if (signed === void 0) { + signed = false; + } + + var length = getLength(bytes[offset]); + var valueBytes = bytes.subarray(offset, offset + length); // NOTE that we do **not** subarray here because we need to copy these bytes + // as they will be modified below to remove the dataSizeLen bits and we do not + // want to modify the original data. normally we could just call slice on + // uint8array but ie 11 does not support that... + + if (removeLength) { + valueBytes = Array.prototype.slice.call(bytes, offset, offset + length); + valueBytes[0] ^= LENGTH_TABLE[length - 1]; + } + + return { + length: length, + value: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(valueBytes, { + signed: signed + }), + bytes: valueBytes }; }; -/** - * @file playback-watcher.js - * - * Playback starts, and now my watch begins. It shall not end until my death. I shall - * take no wait, hold no uncleared timeouts, father no bad seeks. I shall wear no crowns - * and win no glory. I shall live and die at my post. I am the corrector of the underflow. - * I am the watcher of gaps. I am the shield that guards the realms of seekable. I pledge - * my life and honor to the Playback Watch, for this Player and all the Players to come. - */ +var normalizePath = function normalizePath(path) { + if (typeof path === 'string') { + return path.match(/.{1,2}/g).map(function (p) { + return normalizePath(p); + }); + } -const timerCancelEvents = ['seeking', 'seeked', 'pause', 'playing', 'error']; -/** - * @class PlaybackWatcher - */ + if (typeof path === 'number') { + return (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.numberToBytes)(path); + } -class PlaybackWatcher { - /** - * Represents an PlaybackWatcher object. - * - * @class - * @param {Object} options an object that includes the tech and settings - */ - constructor(options) { - this.playlistController_ = options.playlistController; - this.tech_ = options.tech; - this.seekable = options.seekable; - this.allowSeeksWithinUnsafeLiveWindow = options.allowSeeksWithinUnsafeLiveWindow; - this.liveRangeSafeTimeDelta = options.liveRangeSafeTimeDelta; - this.media = options.media; - this.consecutiveUpdates = 0; - this.lastRecordedTime = null; - this.checkCurrentTimeTimeout_ = null; - this.logger_ = logger('PlaybackWatcher'); - this.logger_('initialize'); - const playHandler = () => this.monitorCurrentTime_(); - const canPlayHandler = () => this.monitorCurrentTime_(); - const waitingHandler = () => this.techWaiting_(); - const cancelTimerHandler = () => this.resetTimeUpdate_(); - const pc = this.playlistController_; - const loaderTypes = ['main', 'subtitle', 'audio']; - const loaderChecks = {}; - loaderTypes.forEach(type => { - loaderChecks[type] = { - reset: () => this.resetSegmentDownloads_(type), - updateend: () => this.checkSegmentDownloads_(type) - }; - pc[`${type}SegmentLoader_`].on('appendsdone', loaderChecks[type].updateend); // If a rendition switch happens during a playback stall where the buffer - // isn't changing we want to reset. We cannot assume that the new rendition - // will also be stalled, until after new appends. + return path; +}; - pc[`${type}SegmentLoader_`].on('playlistupdate', loaderChecks[type].reset); // Playback stalls should not be detected right after seeking. - // This prevents one segment playlists (single vtt or single segment content) - // from being detected as stalling. As the buffer will not change in those cases, since - // the buffer is the entire video duration. +var normalizePaths = function normalizePaths(paths) { + if (!Array.isArray(paths)) { + return [normalizePath(paths)]; + } - this.tech_.on(['seeked', 'seeking'], loaderChecks[type].reset); - }); - /** - * We check if a seek was into a gap through the following steps: - * 1. We get a seeking event and we do not get a seeked event. This means that - * a seek was attempted but not completed. - * 2. We run `fixesBadSeeks_` on segment loader appends. This means that we already - * removed everything from our buffer and appended a segment, and should be ready - * to check for gaps. - */ + return paths.map(function (p) { + return normalizePath(p); + }); +}; - const setSeekingHandlers = fn => { - ['main', 'audio'].forEach(type => { - pc[`${type}SegmentLoader_`][fn]('appended', this.seekingAppendCheck_); - }); - }; - this.seekingAppendCheck_ = () => { - if (this.fixesBadSeeks_()) { - this.consecutiveUpdates = 0; - this.lastRecordedTime = this.tech_.currentTime(); - setSeekingHandlers('off'); - } - }; - this.clearSeekingAppendCheck_ = () => setSeekingHandlers('off'); - this.watchForBadSeeking_ = () => { - this.clearSeekingAppendCheck_(); - setSeekingHandlers('on'); - }; - this.tech_.on('seeked', this.clearSeekingAppendCheck_); - this.tech_.on('seeking', this.watchForBadSeeking_); - this.tech_.on('waiting', waitingHandler); - this.tech_.on(timerCancelEvents, cancelTimerHandler); - this.tech_.on('canplay', canPlayHandler); - /* - An edge case exists that results in gaps not being skipped when they exist at the beginning of a stream. This case - is surfaced in one of two ways: - 1) The `waiting` event is fired before the player has buffered content, making it impossible - to find or skip the gap. The `waiting` event is followed by a `play` event. On first play - we can check if playback is stalled due to a gap, and skip the gap if necessary. - 2) A source with a gap at the beginning of the stream is loaded programatically while the player - is in a playing state. To catch this case, it's important that our one-time play listener is setup - even if the player is in a playing state - */ +var getInfinityDataSize = function getInfinityDataSize(id, bytes, offset) { + if (offset >= bytes.length) { + return bytes.length; + } - this.tech_.one('play', playHandler); // Define the dispose function to clean up our events + var innerid = getvint(bytes, offset, false); - this.dispose = () => { - this.clearSeekingAppendCheck_(); - this.logger_('dispose'); - this.tech_.off('waiting', waitingHandler); - this.tech_.off(timerCancelEvents, cancelTimerHandler); - this.tech_.off('canplay', canPlayHandler); - this.tech_.off('play', playHandler); - this.tech_.off('seeking', this.watchForBadSeeking_); - this.tech_.off('seeked', this.clearSeekingAppendCheck_); - loaderTypes.forEach(type => { - pc[`${type}SegmentLoader_`].off('appendsdone', loaderChecks[type].updateend); - pc[`${type}SegmentLoader_`].off('playlistupdate', loaderChecks[type].reset); - this.tech_.off(['seeked', 'seeking'], loaderChecks[type].reset); - }); - if (this.checkCurrentTimeTimeout_) { - global_window__WEBPACK_IMPORTED_MODULE_0___default().clearTimeout(this.checkCurrentTimeTimeout_); - } - this.resetTimeUpdate_(); - }; + if ((0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(id.bytes, innerid.bytes)) { + return offset; } - /** - * Periodically check current time to see if playback stopped - * - * @private - */ - monitorCurrentTime_() { - this.checkCurrentTime_(); - if (this.checkCurrentTimeTimeout_) { - global_window__WEBPACK_IMPORTED_MODULE_0___default().clearTimeout(this.checkCurrentTimeTimeout_); - } // 42 = 24 fps // 250 is what Webkit uses // FF uses 15 + var dataHeader = getvint(bytes, offset + innerid.length); + return getInfinityDataSize(id, bytes, offset + dataHeader.length + dataHeader.value + innerid.length); +}; +/** + * Notes on the EBLM format. + * + * EBLM uses "vints" tags. Every vint tag contains + * two parts + * + * 1. The length from the first byte. You get this by + * converting the byte to binary and counting the zeros + * before a 1. Then you add 1 to that. Examples + * 00011111 = length 4 because there are 3 zeros before a 1. + * 00100000 = length 3 because there are 2 zeros before a 1. + * 00000011 = length 7 because there are 6 zeros before a 1. + * + * 2. The bits used for length are removed from the first byte + * Then all the bytes are merged into a value. NOTE: this + * is not the case for id ebml tags as there id includes + * length bits. + * + */ - this.checkCurrentTimeTimeout_ = global_window__WEBPACK_IMPORTED_MODULE_0___default().setTimeout(this.monitorCurrentTime_.bind(this), 250); - } - /** - * Reset stalled download stats for a specific type of loader - * - * @param {string} type - * The segment loader type to check. - * - * @listens SegmentLoader#playlistupdate - * @listens Tech#seeking - * @listens Tech#seeked - */ - resetSegmentDownloads_(type) { - const loader = this.playlistController_[`${type}SegmentLoader_`]; - if (this[`${type}StalledDownloads_`] > 0) { - this.logger_(`resetting possible stalled download count for ${type} loader`); - } - this[`${type}StalledDownloads_`] = 0; - this[`${type}Buffered_`] = loader.buffered_(); +var findEbml = function findEbml(bytes, paths) { + paths = normalizePaths(paths); + bytes = (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)(bytes); + var results = []; + + if (!paths.length) { + return results; } - /** - * Checks on every segment `appendsdone` to see - * if segment appends are making progress. If they are not - * and we are still downloading bytes. We exclude the playlist. - * - * @param {string} type - * The segment loader type to check. - * - * @listens SegmentLoader#appendsdone - */ - checkSegmentDownloads_(type) { - const pc = this.playlistController_; - const loader = pc[`${type}SegmentLoader_`]; - const buffered = loader.buffered_(); - const isBufferedDifferent = isRangeDifferent(this[`${type}Buffered_`], buffered); - this[`${type}Buffered_`] = buffered; // if another watcher is going to fix the issue or - // the buffered value for this loader changed - // appends are working + var i = 0; - if (isBufferedDifferent) { - this.resetSegmentDownloads_(type); - return; + while (i < bytes.length) { + var id = getvint(bytes, i, false); + var dataHeader = getvint(bytes, i + id.length); + var dataStart = i + id.length + dataHeader.length; // dataSize is unknown or this is a live stream + + if (dataHeader.value === 0x7f) { + dataHeader.value = getInfinityDataSize(id, bytes, dataStart); + + if (dataHeader.value !== bytes.length) { + dataHeader.value -= dataStart; + } } - this[`${type}StalledDownloads_`]++; - this.logger_(`found #${this[`${type}StalledDownloads_`]} ${type} appends that did not increase buffer (possible stalled download)`, { - playlistId: loader.playlist_ && loader.playlist_.id, - buffered: timeRangesToArray(buffered) - }); // after 10 possibly stalled appends with no reset, exclude - if (this[`${type}StalledDownloads_`] < 10) { - return; + var dataEnd = dataStart + dataHeader.value > bytes.length ? bytes.length : dataStart + dataHeader.value; + var data = bytes.subarray(dataStart, dataEnd); + + if ((0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(paths[0], id.bytes)) { + if (paths.length === 1) { + // this is the end of the paths and we've found the tag we were + // looking for + results.push(data); + } else { + // recursively search for the next tag inside of the data + // of this one + results = results.concat(findEbml(data, paths.slice(1))); + } } - this.logger_(`${type} loader stalled download exclusion`); - this.resetSegmentDownloads_(type); - this.tech_.trigger({ - type: 'usage', - name: `vhs-${type}-download-exclusion` - }); - if (type === 'subtitle') { - return; - } // TODO: should we exclude audio tracks rather than main tracks - // when type is audio? - pc.excludePlaylist({ - error: { - message: `Excessive ${type} segment downloading detected.` - }, - playlistExclusionDuration: Infinity - }); + var totalLength = id.length + dataHeader.length + data.length; // move past this tag entirely, we are not looking for it + + i += totalLength; } - /** - * The purpose of this function is to emulate the "waiting" event on - * browsers that do not emit it when they are waiting for more - * data to continue playback - * - * @private - */ - checkCurrentTime_() { - if (this.tech_.paused() || this.tech_.seeking()) { - return; - } - const currentTime = this.tech_.currentTime(); - const buffered = this.tech_.buffered(); - if (this.lastRecordedTime === currentTime && (!buffered.length || currentTime + SAFE_TIME_DELTA >= buffered.end(buffered.length - 1))) { - // If current time is at the end of the final buffered region, then any playback - // stall is most likely caused by buffering in a low bandwidth environment. The tech - // should fire a `waiting` event in this scenario, but due to browser and tech - // inconsistencies. Calling `techWaiting_` here allows us to simulate - // responding to a native `waiting` event when the tech fails to emit one. - return this.techWaiting_(); - } - if (this.consecutiveUpdates >= 5 && currentTime === this.lastRecordedTime) { - this.consecutiveUpdates++; - this.waiting_(); - } else if (currentTime === this.lastRecordedTime) { - this.consecutiveUpdates++; - } else { - this.consecutiveUpdates = 0; - this.lastRecordedTime = currentTime; + return results; +}; // see https://www.matroska.org/technical/basics.html#block-structure + +var decodeBlock = function decodeBlock(block, type, timestampScale, clusterTimestamp) { + var duration; + + if (type === 'group') { + duration = findEbml(block, [EBML_TAGS.BlockDuration])[0]; + + if (duration) { + duration = (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(duration); + duration = 1 / timestampScale * duration * timestampScale / 1000; } + + block = findEbml(block, [EBML_TAGS.Block])[0]; + type = 'block'; // treat data as a block after this point } - /** - * Resets the 'timeupdate' mechanism designed to detect that we are stalled - * - * @private - */ - resetTimeUpdate_() { - this.consecutiveUpdates = 0; + var dv = new DataView(block.buffer, block.byteOffset, block.byteLength); + var trackNumber = getvint(block, 0); + var timestamp = dv.getInt16(trackNumber.length, false); + var flags = block[trackNumber.length + 2]; + var data = block.subarray(trackNumber.length + 3); // pts/dts in seconds + + var ptsdts = 1 / timestampScale * (clusterTimestamp + timestamp) * timestampScale / 1000; // return the frame + + var parsed = { + duration: duration, + trackNumber: trackNumber.value, + keyframe: type === 'simple' && flags >> 7 === 1, + invisible: (flags & 0x08) >> 3 === 1, + lacing: (flags & 0x06) >> 1, + discardable: type === 'simple' && (flags & 0x01) === 1, + frames: [], + pts: ptsdts, + dts: ptsdts, + timestamp: timestamp + }; + + if (!parsed.lacing) { + parsed.frames.push(data); + return parsed; } - /** - * Fixes situations where there's a bad seek - * - * @return {boolean} whether an action was taken to fix the seek - * @private - */ - fixesBadSeeks_() { - const seeking = this.tech_.seeking(); - if (!seeking) { - return false; - } // TODO: It's possible that these seekable checks should be moved out of this function - // and into a function that runs on seekablechange. It's also possible that we only need - // afterSeekableWindow as the buffered check at the bottom is good enough to handle before - // seekable range. + var numberOfFrames = data[0] + 1; + var frameSizes = []; + var offset = 1; // Fixed - const seekable = this.seekable(); - const currentTime = this.tech_.currentTime(); - const isAfterSeekableRange = this.afterSeekableWindow_(seekable, currentTime, this.media(), this.allowSeeksWithinUnsafeLiveWindow); - let seekTo; - if (isAfterSeekableRange) { - const seekableEnd = seekable.end(seekable.length - 1); // sync to live point (if VOD, our seekable was updated and we're simply adjusting) + if (parsed.lacing === 2) { + var sizeOfFrame = (data.length - offset) / numberOfFrames; - seekTo = seekableEnd; + for (var i = 0; i < numberOfFrames; i++) { + frameSizes.push(sizeOfFrame); } - if (this.beforeSeekableWindow_(seekable, currentTime)) { - const seekableStart = seekable.start(0); // sync to the beginning of the live window - // provide a buffer of .1 seconds to handle rounding/imprecise numbers + } // xiph - seekTo = seekableStart + ( - // if the playlist is too short and the seekable range is an exact time (can - // happen in live with a 3 segment playlist), then don't use a time delta - seekableStart === seekable.end(0) ? 0 : SAFE_TIME_DELTA); - } - if (typeof seekTo !== 'undefined') { - this.logger_(`Trying to seek outside of seekable at time ${currentTime} with ` + `seekable range ${printableRange(seekable)}. Seeking to ` + `${seekTo}.`); - this.tech_.setCurrentTime(seekTo); - return true; - } - const sourceUpdater = this.playlistController_.sourceUpdater_; - const buffered = this.tech_.buffered(); - const audioBuffered = sourceUpdater.audioBuffer ? sourceUpdater.audioBuffered() : null; - const videoBuffered = sourceUpdater.videoBuffer ? sourceUpdater.videoBuffered() : null; - const media = this.media(); // verify that at least two segment durations or one part duration have been - // appended before checking for a gap. - const minAppendedDuration = media.partTargetDuration ? media.partTargetDuration : (media.targetDuration - TIME_FUDGE_FACTOR) * 2; // verify that at least two segment durations have been - // appended before checking for a gap. + if (parsed.lacing === 1) { + for (var _i = 0; _i < numberOfFrames - 1; _i++) { + var size = 0; - const bufferedToCheck = [audioBuffered, videoBuffered]; - for (let i = 0; i < bufferedToCheck.length; i++) { - // skip null buffered - if (!bufferedToCheck[i]) { - continue; - } - const timeAhead = timeAheadOf(bufferedToCheck[i], currentTime); // if we are less than two video/audio segment durations or one part - // duration behind we haven't appended enough to call this a bad seek. + do { + size += data[offset]; + offset++; + } while (data[offset - 1] === 0xFF); - if (timeAhead < minAppendedDuration) { - return false; - } + frameSizes.push(size); } - const nextRange = findNextRange(buffered, currentTime); // we have appended enough content, but we don't have anything buffered - // to seek over the gap + } // ebml - if (nextRange.length === 0) { - return false; + + if (parsed.lacing === 3) { + // first vint is unsinged + // after that vints are singed and + // based on a compounding size + var _size = 0; + + for (var _i2 = 0; _i2 < numberOfFrames - 1; _i2++) { + var vint = _i2 === 0 ? getvint(data, offset) : getvint(data, offset, true, true); + _size += vint.value; + frameSizes.push(_size); + offset += vint.length; } - seekTo = nextRange.start(0) + SAFE_TIME_DELTA; - this.logger_(`Buffered region starts (${nextRange.start(0)}) ` + ` just beyond seek point (${currentTime}). Seeking to ${seekTo}.`); - this.tech_.setCurrentTime(seekTo); - return true; } - /** - * Handler for situations when we determine the player is waiting. - * - * @private - */ - waiting_() { - if (this.techWaiting_()) { - return; - } // All tech waiting checks failed. Use last resort correction + frameSizes.forEach(function (size) { + parsed.frames.push(data.subarray(offset, offset + size)); + offset += size; + }); + return parsed; +}; // VP9 Codec Feature Metadata (CodecPrivate) +// https://www.webmproject.org/docs/container/ - const currentTime = this.tech_.currentTime(); - const buffered = this.tech_.buffered(); - const currentRange = findRange(buffered, currentTime); // Sometimes the player can stall for unknown reasons within a contiguous buffered - // region with no indication that anything is amiss (seen in Firefox). Seeking to - // currentTime is usually enough to kickstart the player. This checks that the player - // is currently within a buffered region before attempting a corrective seek. - // Chrome does not appear to continue `timeupdate` events after a `waiting` event - // until there is ~ 3 seconds of forward buffer available. PlaybackWatcher should also - // make sure there is ~3 seconds of forward buffer before taking any corrective action - // to avoid triggering an `unknownwaiting` event when the network is slow. +var parseVp9Private = function parseVp9Private(bytes) { + var i = 0; + var params = {}; - if (currentRange.length && currentTime + 3 <= currentRange.end(0)) { - this.resetTimeUpdate_(); - this.tech_.setCurrentTime(currentTime); - this.logger_(`Stopped at ${currentTime} while inside a buffered region ` + `[${currentRange.start(0)} -> ${currentRange.end(0)}]. Attempting to resume ` + 'playback by seeking to the current time.'); // unknown waiting corrections may be useful for monitoring QoS + while (i < bytes.length) { + var id = bytes[i] & 0x7f; + var len = bytes[i + 1]; + var val = void 0; - this.tech_.trigger({ - type: 'usage', - name: 'vhs-unknown-waiting' - }); - return; + if (len === 1) { + val = bytes[i + 2]; + } else { + val = bytes.subarray(i + 2, i + 2 + len); } - } - /** - * Handler for situations when the tech fires a `waiting` event - * - * @return {boolean} - * True if an action (or none) was needed to correct the waiting. False if no - * checks passed - * @private - */ - techWaiting_() { - const seekable = this.seekable(); - const currentTime = this.tech_.currentTime(); - if (this.tech_.seeking()) { - // Tech is seeking or already waiting on another action, no action needed - return true; + if (id === 1) { + params.profile = val; + } else if (id === 2) { + params.level = val; + } else if (id === 3) { + params.bitDepth = val; + } else if (id === 4) { + params.chromaSubsampling = val; + } else { + params[id] = val; } - if (this.beforeSeekableWindow_(seekable, currentTime)) { - const livePoint = seekable.end(seekable.length - 1); - this.logger_(`Fell out of live window at time ${currentTime}. Seeking to ` + `live point (seekable end) ${livePoint}`); - this.resetTimeUpdate_(); - this.tech_.setCurrentTime(livePoint); // live window resyncs may be useful for monitoring QoS - this.tech_.trigger({ - type: 'usage', - name: 'vhs-live-resync' - }); - return true; - } - const sourceUpdater = this.tech_.vhs.playlistController_.sourceUpdater_; - const buffered = this.tech_.buffered(); - const videoUnderflow = this.videoUnderflow_({ - audioBuffered: sourceUpdater.audioBuffered(), - videoBuffered: sourceUpdater.videoBuffered(), - currentTime - }); - if (videoUnderflow) { - // Even though the video underflowed and was stuck in a gap, the audio overplayed - // the gap, leading currentTime into a buffered range. Seeking to currentTime - // allows the video to catch up to the audio position without losing any audio - // (only suffering ~3 seconds of frozen video and a pause in audio playback). - this.resetTimeUpdate_(); - this.tech_.setCurrentTime(currentTime); // video underflow may be useful for monitoring QoS + i += 2 + len; + } - this.tech_.trigger({ - type: 'usage', - name: 'vhs-video-underflow' - }); - return true; - } - const nextRange = findNextRange(buffered, currentTime); // check for gap + return params; +}; - if (nextRange.length > 0) { - this.logger_(`Stopped at ${currentTime} and seeking to ${nextRange.start(0)}`); - this.resetTimeUpdate_(); - this.skipTheGap_(currentTime); - return true; - } // All checks failed. Returning false to indicate failure to correct waiting +var parseTracks = function parseTracks(bytes) { + bytes = (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.toUint8)(bytes); + var decodedTracks = []; + var tracks = findEbml(bytes, [EBML_TAGS.Segment, EBML_TAGS.Tracks, EBML_TAGS.Track]); - return false; + if (!tracks.length) { + tracks = findEbml(bytes, [EBML_TAGS.Tracks, EBML_TAGS.Track]); } - afterSeekableWindow_(seekable, currentTime, playlist, allowSeeksWithinUnsafeLiveWindow = false) { - if (!seekable.length) { - // we can't make a solid case if there's no seekable, default to false - return false; - } - let allowedEnd = seekable.end(seekable.length - 1) + SAFE_TIME_DELTA; - const isLive = !playlist.endList; - const isLLHLS = typeof playlist.partTargetDuration === 'number'; - if (isLive && (isLLHLS || allowSeeksWithinUnsafeLiveWindow)) { - allowedEnd = seekable.end(seekable.length - 1) + playlist.targetDuration * 3; - } - if (currentTime > allowedEnd) { - return true; - } - return false; + + if (!tracks.length) { + tracks = findEbml(bytes, [EBML_TAGS.Track]); } - beforeSeekableWindow_(seekable, currentTime) { - if (seekable.length && - // can't fall before 0 and 0 seekable start identifies VOD stream - seekable.start(0) > 0 && currentTime < seekable.start(0) - this.liveRangeSafeTimeDelta) { - return true; - } - return false; + + if (!tracks.length) { + return decodedTracks; } - videoUnderflow_({ - videoBuffered, - audioBuffered, - currentTime - }) { - // audio only content will not have video underflow :) - if (!videoBuffered) { + + tracks.forEach(function (track) { + var trackType = findEbml(track, EBML_TAGS.TrackType)[0]; + + if (!trackType || !trackType.length) { return; + } // 1 is video, 2 is audio, 17 is subtitle + // other values are unimportant in this context + + + if (trackType[0] === 1) { + trackType = 'video'; + } else if (trackType[0] === 2) { + trackType = 'audio'; + } else if (trackType[0] === 17) { + trackType = 'subtitle'; + } else { + return; + } // todo parse language + + + var decodedTrack = { + rawCodec: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.bytesToString)(findEbml(track, [EBML_TAGS.CodecID])[0]), + type: trackType, + codecPrivate: findEbml(track, [EBML_TAGS.CodecPrivate])[0], + number: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(findEbml(track, [EBML_TAGS.TrackNumber])[0]), + defaultDuration: (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(findEbml(track, [EBML_TAGS.DefaultDuration])[0]), + default: findEbml(track, [EBML_TAGS.FlagDefault])[0], + rawData: track + }; + var codec = ''; + + if (/V_MPEG4\/ISO\/AVC/.test(decodedTrack.rawCodec)) { + codec = "avc1." + (0,_codec_helpers_js__WEBPACK_IMPORTED_MODULE_1__.getAvcCodec)(decodedTrack.codecPrivate); + } else if (/V_MPEGH\/ISO\/HEVC/.test(decodedTrack.rawCodec)) { + codec = "hev1." + (0,_codec_helpers_js__WEBPACK_IMPORTED_MODULE_1__.getHvcCodec)(decodedTrack.codecPrivate); + } else if (/V_MPEG4\/ISO\/ASP/.test(decodedTrack.rawCodec)) { + if (decodedTrack.codecPrivate) { + codec = 'mp4v.20.' + decodedTrack.codecPrivate[4].toString(); + } else { + codec = 'mp4v.20.9'; + } + } else if (/^V_THEORA/.test(decodedTrack.rawCodec)) { + codec = 'theora'; + } else if (/^V_VP8/.test(decodedTrack.rawCodec)) { + codec = 'vp8'; + } else if (/^V_VP9/.test(decodedTrack.rawCodec)) { + if (decodedTrack.codecPrivate) { + var _parseVp9Private = parseVp9Private(decodedTrack.codecPrivate), + profile = _parseVp9Private.profile, + level = _parseVp9Private.level, + bitDepth = _parseVp9Private.bitDepth, + chromaSubsampling = _parseVp9Private.chromaSubsampling; + + codec = 'vp09.'; + codec += (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.padStart)(profile, 2, '0') + "."; + codec += (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.padStart)(level, 2, '0') + "."; + codec += (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.padStart)(bitDepth, 2, '0') + "."; + codec += "" + (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.padStart)(chromaSubsampling, 2, '0'); // Video -> Colour -> Ebml name + + var matrixCoefficients = findEbml(track, [0xE0, [0x55, 0xB0], [0x55, 0xB1]])[0] || []; + var videoFullRangeFlag = findEbml(track, [0xE0, [0x55, 0xB0], [0x55, 0xB9]])[0] || []; + var transferCharacteristics = findEbml(track, [0xE0, [0x55, 0xB0], [0x55, 0xBA]])[0] || []; + var colourPrimaries = findEbml(track, [0xE0, [0x55, 0xB0], [0x55, 0xBB]])[0] || []; // if we find any optional codec parameter specify them all. + + if (matrixCoefficients.length || videoFullRangeFlag.length || transferCharacteristics.length || colourPrimaries.length) { + codec += "." + (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.padStart)(colourPrimaries[0], 2, '0'); + codec += "." + (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.padStart)(transferCharacteristics[0], 2, '0'); + codec += "." + (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.padStart)(matrixCoefficients[0], 2, '0'); + codec += "." + (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.padStart)(videoFullRangeFlag[0], 2, '0'); + } + } else { + codec = 'vp9'; + } + } else if (/^V_AV1/.test(decodedTrack.rawCodec)) { + codec = "av01." + (0,_codec_helpers_js__WEBPACK_IMPORTED_MODULE_1__.getAv1Codec)(decodedTrack.codecPrivate); + } else if (/A_ALAC/.test(decodedTrack.rawCodec)) { + codec = 'alac'; + } else if (/A_MPEG\/L2/.test(decodedTrack.rawCodec)) { + codec = 'mp2'; + } else if (/A_MPEG\/L3/.test(decodedTrack.rawCodec)) { + codec = 'mp3'; + } else if (/^A_AAC/.test(decodedTrack.rawCodec)) { + if (decodedTrack.codecPrivate) { + codec = 'mp4a.40.' + (decodedTrack.codecPrivate[0] >>> 3).toString(); + } else { + codec = 'mp4a.40.2'; + } + } else if (/^A_AC3/.test(decodedTrack.rawCodec)) { + codec = 'ac-3'; + } else if (/^A_PCM/.test(decodedTrack.rawCodec)) { + codec = 'pcm'; + } else if (/^A_MS\/ACM/.test(decodedTrack.rawCodec)) { + codec = 'speex'; + } else if (/^A_EAC3/.test(decodedTrack.rawCodec)) { + codec = 'ec-3'; + } else if (/^A_VORBIS/.test(decodedTrack.rawCodec)) { + codec = 'vorbis'; + } else if (/^A_FLAC/.test(decodedTrack.rawCodec)) { + codec = 'flac'; + } else if (/^A_OPUS/.test(decodedTrack.rawCodec)) { + codec = 'opus'; } - let gap; // find a gap in demuxed content. - if (videoBuffered.length && audioBuffered.length) { - // in Chrome audio will continue to play for ~3s when we run out of video - // so we have to check that the video buffer did have some buffer in the - // past. - const lastVideoRange = findRange(videoBuffered, currentTime - 3); - const videoRange = findRange(videoBuffered, currentTime); - const audioRange = findRange(audioBuffered, currentTime); - if (audioRange.length && !videoRange.length && lastVideoRange.length) { - gap = { - start: lastVideoRange.end(0), - end: audioRange.end(0) - }; - } // find a gap in muxed content. - } else { - const nextRange = findNextRange(videoBuffered, currentTime); // Even if there is no available next range, there is still a possibility we are - // stuck in a gap due to video underflow. + decodedTrack.codec = codec; + decodedTracks.push(decodedTrack); + }); + return decodedTracks.sort(function (a, b) { + return a.number - b.number; + }); +}; +var parseData = function parseData(data, tracks) { + var allBlocks = []; + var segment = findEbml(data, [EBML_TAGS.Segment])[0]; + var timestampScale = findEbml(segment, [EBML_TAGS.SegmentInfo, EBML_TAGS.TimestampScale])[0]; // in nanoseconds, defaults to 1ms + + if (timestampScale && timestampScale.length) { + timestampScale = (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(timestampScale); + } else { + timestampScale = 1000000; + } + + var clusters = findEbml(segment, [EBML_TAGS.Cluster]); + + if (!tracks) { + tracks = parseTracks(segment); + } + + clusters.forEach(function (cluster, ci) { + var simpleBlocks = findEbml(cluster, [EBML_TAGS.SimpleBlock]).map(function (b) { + return { + type: 'simple', + data: b + }; + }); + var blockGroups = findEbml(cluster, [EBML_TAGS.BlockGroup]).map(function (b) { + return { + type: 'group', + data: b + }; + }); + var timestamp = findEbml(cluster, [EBML_TAGS.Timestamp])[0] || 0; + + if (timestamp && timestamp.length) { + timestamp = (0,_byte_helpers__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(timestamp); + } // get all blocks then sort them into the correct order + + + var blocks = simpleBlocks.concat(blockGroups).sort(function (a, b) { + return a.data.byteOffset - b.data.byteOffset; + }); + blocks.forEach(function (block, bi) { + var decoded = decodeBlock(block.data, block.type, timestampScale, timestamp); + allBlocks.push(decoded); + }); + }); + return { + tracks: tracks, + blocks: allBlocks + }; +}; + +/***/ }), - if (!nextRange.length) { - gap = this.gapFromVideoUnderflow_(videoBuffered, currentTime); - } - } - if (gap) { - this.logger_(`Encountered a gap in video from ${gap.start} to ${gap.end}. ` + `Seeking to current time ${currentTime}`); - return true; - } - return false; +/***/ "./node_modules/video.js/node_modules/@videojs/vhs-utils/es/id3-helpers.js": +/*!*********************************************************************************!*\ + !*** ./node_modules/video.js/node_modules/@videojs/vhs-utils/es/id3-helpers.js ***! + \*********************************************************************************/ +/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { + +"use strict"; +__webpack_require__.r(__webpack_exports__); +/* harmony export */ __webpack_require__.d(__webpack_exports__, { +/* harmony export */ getId3Offset: () => (/* binding */ getId3Offset), +/* harmony export */ getId3Size: () => (/* binding */ getId3Size) +/* harmony export */ }); +/* harmony import */ var _byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./byte-helpers.js */ "./node_modules/video.js/node_modules/@videojs/vhs-utils/es/byte-helpers.js"); + +var ID3 = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x49, 0x44, 0x33]); +var getId3Size = function getId3Size(bytes, offset) { + if (offset === void 0) { + offset = 0; } - /** - * Timer callback. If playback still has not proceeded, then we seek - * to the start of the next buffered region. - * - * @private - */ - skipTheGap_(scheduledCurrentTime) { - const buffered = this.tech_.buffered(); - const currentTime = this.tech_.currentTime(); - const nextRange = findNextRange(buffered, currentTime); - this.resetTimeUpdate_(); - if (nextRange.length === 0 || currentTime !== scheduledCurrentTime) { - return; - } - this.logger_('skipTheGap_:', 'currentTime:', currentTime, 'scheduled currentTime:', scheduledCurrentTime, 'nextRange start:', nextRange.start(0)); // only seek if we still have not played + bytes = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)(bytes); + var flags = bytes[offset + 5]; + var returnSize = bytes[offset + 6] << 21 | bytes[offset + 7] << 14 | bytes[offset + 8] << 7 | bytes[offset + 9]; + var footerPresent = (flags & 16) >> 4; - this.tech_.setCurrentTime(nextRange.start(0) + TIME_FUDGE_FACTOR); - this.tech_.trigger({ - type: 'usage', - name: 'vhs-gap-skip' - }); + if (footerPresent) { + return returnSize + 20; } - gapFromVideoUnderflow_(buffered, currentTime) { - // At least in Chrome, if there is a gap in the video buffer, the audio will continue - // playing for ~3 seconds after the video gap starts. This is done to account for - // video buffer underflow/underrun (note that this is not done when there is audio - // buffer underflow/underrun -- in that case the video will stop as soon as it - // encounters the gap, as audio stalls are more noticeable/jarring to a user than - // video stalls). The player's time will reflect the playthrough of audio, so the - // time will appear as if we are in a buffered region, even if we are stuck in a - // "gap." - // - // Example: - // video buffer: 0 => 10.1, 10.2 => 20 - // audio buffer: 0 => 20 - // overall buffer: 0 => 10.1, 10.2 => 20 - // current time: 13 - // - // Chrome's video froze at 10 seconds, where the video buffer encountered the gap, - // however, the audio continued playing until it reached ~3 seconds past the gap - // (13 seconds), at which point it stops as well. Since current time is past the - // gap, findNextRange will return no ranges. - // - // To check for this issue, we see if there is a gap that starts somewhere within - // a 3 second range (3 seconds +/- 1 second) back from our current time. - const gaps = findGaps(buffered); - for (let i = 0; i < gaps.length; i++) { - const start = gaps.start(i); - const end = gaps.end(i); // gap is starts no more than 4 seconds back - if (currentTime - start < 4 && currentTime - start > 2) { - return { - start, - end - }; - } - } - return null; + return returnSize + 10; +}; +var getId3Offset = function getId3Offset(bytes, offset) { + if (offset === void 0) { + offset = 0; } -} -const defaultOptions = { - errorInterval: 30, - getSource(next) { - const tech = this.tech({ - IWillNotUseThisInPlugins: true - }); - const sourceObj = tech.currentSource_ || this.currentSource(); - return next(sourceObj); + + bytes = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)(bytes); + + if (bytes.length - offset < 10 || !(0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes, ID3, { + offset: offset + })) { + return offset; } + + offset += getId3Size(bytes, offset); // recursive check for id3 tags as some files + // have multiple ID3 tag sections even though + // they should not. + + return getId3Offset(bytes, offset); }; + +/***/ }), + +/***/ "./node_modules/video.js/node_modules/@videojs/vhs-utils/es/media-types.js": +/*!*********************************************************************************!*\ + !*** ./node_modules/video.js/node_modules/@videojs/vhs-utils/es/media-types.js ***! + \*********************************************************************************/ +/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { + +"use strict"; +__webpack_require__.r(__webpack_exports__); +/* harmony export */ __webpack_require__.d(__webpack_exports__, { +/* harmony export */ simpleTypeFromSourceType: () => (/* binding */ simpleTypeFromSourceType) +/* harmony export */ }); +var MPEGURL_REGEX = /^(audio|video|application)\/(x-|vnd\.apple\.)?mpegurl/i; +var DASH_REGEX = /^application\/dash\+xml/i; /** - * Main entry point for the plugin + * Returns a string that describes the type of source based on a video source object's + * media type. * - * @param {Player} player a reference to a videojs Player instance - * @param {Object} [options] an object with plugin options - * @private + * @see {@link https://dev.w3.org/html5/pf-summary/video.html#dom-source-type|Source Type} + * + * @param {string} type + * Video source object media type + * @return {('hls'|'dash'|'vhs-json'|null)} + * VHS source type string */ -const initPlugin = function (player, options) { - let lastCalled = 0; - let seekTo = 0; - const localOptions = merge(defaultOptions, options); - player.ready(() => { - player.trigger({ - type: 'usage', - name: 'vhs-error-reload-initialized' - }); - }); - /** - * Player modifications to perform that must wait until `loadedmetadata` - * has been triggered - * - * @private - */ +var simpleTypeFromSourceType = function simpleTypeFromSourceType(type) { + if (MPEGURL_REGEX.test(type)) { + return 'hls'; + } - const loadedMetadataHandler = function () { - if (seekTo) { - player.currentTime(seekTo); - } - }; - /** - * Set the source on the player element, play, and seek if necessary - * - * @param {Object} sourceObj An object specifying the source url and mime-type to play - * @private - */ + if (DASH_REGEX.test(type)) { + return 'dash'; + } // Denotes the special case of a manifest object passed to http-streaming instead of a + // source URL. + // + // See https://en.wikipedia.org/wiki/Media_type for details on specifying media types. + // + // In this case, vnd stands for vendor, video.js for the organization, VHS for this + // project, and the +json suffix identifies the structure of the media type. - const setSource = function (sourceObj) { - if (sourceObj === null || sourceObj === undefined) { - return; - } - seekTo = player.duration() !== Infinity && player.currentTime() || 0; - player.one('loadedmetadata', loadedMetadataHandler); - player.src(sourceObj); - player.trigger({ - type: 'usage', - name: 'vhs-error-reload' - }); - player.play(); - }; - /** - * Attempt to get a source from either the built-in getSource function - * or a custom function provided via the options - * - * @private - */ - const errorHandler = function () { - // Do not attempt to reload the source if a source-reload occurred before - // 'errorInterval' time has elapsed since the last source-reload - if (Date.now() - lastCalled < localOptions.errorInterval * 1000) { - player.trigger({ - type: 'usage', - name: 'vhs-error-reload-canceled' - }); - return; - } - if (!localOptions.getSource || typeof localOptions.getSource !== 'function') { - videojs.log.error('ERROR: reloadSourceOnError - The option getSource must be a function!'); - return; - } - lastCalled = Date.now(); - return localOptions.getSource.call(player, setSource); - }; - /** - * Unbind any event handlers that were bound by the plugin - * - * @private - */ + if (type === 'application/vnd.videojs.vhs+json') { + return 'vhs-json'; + } - const cleanupEvents = function () { - player.off('loadedmetadata', loadedMetadataHandler); - player.off('error', errorHandler); - player.off('dispose', cleanupEvents); - }; - /** - * Cleanup before re-initializing the plugin - * - * @param {Object} [newOptions] an object with plugin options - * @private - */ + return null; +}; - const reinitPlugin = function (newOptions) { - cleanupEvents(); - initPlugin(player, newOptions); - }; - player.on('error', errorHandler); - player.on('dispose', cleanupEvents); // Overwrite the plugin function so that we can correctly cleanup before - // initializing the plugin +/***/ }), - player.reloadSourceOnError = reinitPlugin; +/***/ "./node_modules/video.js/node_modules/@videojs/vhs-utils/es/mp4-helpers.js": +/*!*********************************************************************************!*\ + !*** ./node_modules/video.js/node_modules/@videojs/vhs-utils/es/mp4-helpers.js ***! + \*********************************************************************************/ +/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { + +"use strict"; +__webpack_require__.r(__webpack_exports__); +/* harmony export */ __webpack_require__.d(__webpack_exports__, { +/* harmony export */ addSampleDescription: () => (/* binding */ addSampleDescription), +/* harmony export */ buildFrameTable: () => (/* binding */ buildFrameTable), +/* harmony export */ findBox: () => (/* binding */ findBox), +/* harmony export */ findNamedBox: () => (/* binding */ findNamedBox), +/* harmony export */ parseDescriptors: () => (/* binding */ parseDescriptors), +/* harmony export */ parseMediaInfo: () => (/* binding */ parseMediaInfo), +/* harmony export */ parseTracks: () => (/* binding */ parseTracks) +/* harmony export */ }); +/* harmony import */ var _byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./byte-helpers.js */ "./node_modules/video.js/node_modules/@videojs/vhs-utils/es/byte-helpers.js"); +/* harmony import */ var _codec_helpers_js__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./codec-helpers.js */ "./node_modules/video.js/node_modules/@videojs/vhs-utils/es/codec-helpers.js"); +/* harmony import */ var _opus_helpers_js__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ./opus-helpers.js */ "./node_modules/video.js/node_modules/@videojs/vhs-utils/es/opus-helpers.js"); + + + + +var normalizePath = function normalizePath(path) { + if (typeof path === 'string') { + return (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.stringToBytes)(path); + } + + if (typeof path === 'number') { + return path; + } + + return path; }; -/** - * Reload the source when an error is detected as long as there - * wasn't an error previously within the last 30 seconds - * - * @param {Object} [options] an object with plugin options - */ -const reloadSourceOnError = function (options) { - initPlugin(this, options); +var normalizePaths = function normalizePaths(paths) { + if (!Array.isArray(paths)) { + return [normalizePath(paths)]; + } + + return paths.map(function (p) { + return normalizePath(p); + }); }; -var version$4 = "3.7.0"; -var version$3 = "7.0.1"; -var version$2 = "1.2.2"; -var version$1 = "7.1.0"; -var version = "4.0.1"; -/** - * @file videojs-http-streaming.js - * - * The main file for the VHS project. - * License: https://github.com/videojs/videojs-http-streaming/blob/main/LICENSE - */ -const Vhs = { - PlaylistLoader, - Playlist, - utils, - STANDARD_PLAYLIST_SELECTOR: lastBandwidthSelector, - INITIAL_PLAYLIST_SELECTOR: lowestBitrateCompatibleVariantSelector, - lastBandwidthSelector, - movingAverageBandwidthSelector, - comparePlaylistBandwidth, - comparePlaylistResolution, - xhr: xhrFactory() -}; // Define getter/setters for config properties +var DESCRIPTORS; +var parseDescriptors = function parseDescriptors(bytes) { + bytes = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)(bytes); + var results = []; + var i = 0; -Object.keys(Config).forEach(prop => { - Object.defineProperty(Vhs, prop, { - get() { - videojs.log.warn(`using Vhs.${prop} is UNSAFE be sure you know what you are doing`); - return Config[prop]; - }, - set(value) { - videojs.log.warn(`using Vhs.${prop} is UNSAFE be sure you know what you are doing`); - if (typeof value !== 'number' || value < 0) { - videojs.log.warn(`value of Vhs.${prop} must be greater than or equal to 0`); - return; - } - Config[prop] = value; + while (bytes.length > i) { + var tag = bytes[i]; + var size = 0; + var headerSize = 0; // tag + + headerSize++; + var byte = bytes[headerSize]; // first byte + + headerSize++; + + while (byte & 0x80) { + size = (byte & 0x7F) << 7; + byte = bytes[headerSize]; + headerSize++; } - }); -}); -const LOCAL_STORAGE_KEY = 'videojs-vhs'; -/** - * Updates the selectedIndex of the QualityLevelList when a mediachange happens in vhs. - * - * @param {QualityLevelList} qualityLevels The QualityLevelList to update. - * @param {PlaylistLoader} playlistLoader PlaylistLoader containing the new media info. - * @function handleVhsMediaChange - */ -const handleVhsMediaChange = function (qualityLevels, playlistLoader) { - const newPlaylist = playlistLoader.media(); - let selectedIndex = -1; - for (let i = 0; i < qualityLevels.length; i++) { - if (qualityLevels[i].id === newPlaylist.id) { - selectedIndex = i; - break; + size += byte & 0x7F; + + for (var z = 0; z < DESCRIPTORS.length; z++) { + var _DESCRIPTORS$z = DESCRIPTORS[z], + id = _DESCRIPTORS$z.id, + parser = _DESCRIPTORS$z.parser; + + if (tag === id) { + results.push(parser(bytes.subarray(headerSize, headerSize + size))); + break; + } } + + i += size + headerSize; } - qualityLevels.selectedIndex_ = selectedIndex; - qualityLevels.trigger({ - selectedIndex, - type: 'change' - }); + + return results; }; -/** - * Adds quality levels to list once playlist metadata is available - * - * @param {QualityLevelList} qualityLevels The QualityLevelList to attach events to. - * @param {Object} vhs Vhs object to listen to for media events. - * @function handleVhsLoadedMetadata - */ +DESCRIPTORS = [{ + id: 0x03, + parser: function parser(bytes) { + var desc = { + tag: 0x03, + id: bytes[0] << 8 | bytes[1], + flags: bytes[2], + size: 3, + dependsOnEsId: 0, + ocrEsId: 0, + descriptors: [], + url: '' + }; // depends on es id -const handleVhsLoadedMetadata = function (qualityLevels, vhs) { - vhs.representations().forEach(rep => { - qualityLevels.addQualityLevel(rep); - }); - handleVhsMediaChange(qualityLevels, vhs.playlists); -}; // VHS is a source handler, not a tech. Make sure attempts to use it -// as one do not cause exceptions. + if (desc.flags & 0x80) { + desc.dependsOnEsId = bytes[desc.size] << 8 | bytes[desc.size + 1]; + desc.size += 2; + } // url -Vhs.canPlaySource = function () { - return videojs.log.warn('VHS is no longer a tech. Please remove it from ' + 'your player\'s techOrder.'); -}; -const emeKeySystems = (keySystemOptions, mainPlaylist, audioPlaylist) => { - if (!keySystemOptions) { - return keySystemOptions; - } - let codecs = {}; - if (mainPlaylist && mainPlaylist.attributes && mainPlaylist.attributes.CODECS) { - codecs = unwrapCodecList((0,_videojs_vhs_utils_es_codecs_js__WEBPACK_IMPORTED_MODULE_9__.parseCodecs)(mainPlaylist.attributes.CODECS)); - } - if (audioPlaylist && audioPlaylist.attributes && audioPlaylist.attributes.CODECS) { - codecs.audio = audioPlaylist.attributes.CODECS; - } - const videoContentType = (0,_videojs_vhs_utils_es_codecs_js__WEBPACK_IMPORTED_MODULE_9__.getMimeForCodec)(codecs.video); - const audioContentType = (0,_videojs_vhs_utils_es_codecs_js__WEBPACK_IMPORTED_MODULE_9__.getMimeForCodec)(codecs.audio); // upsert the content types based on the selected playlist - const keySystemContentTypes = {}; - for (const keySystem in keySystemOptions) { - keySystemContentTypes[keySystem] = {}; - if (audioContentType) { - keySystemContentTypes[keySystem].audioContentType = audioContentType; - } - if (videoContentType) { - keySystemContentTypes[keySystem].videoContentType = videoContentType; - } // Default to using the video playlist's PSSH even though they may be different, as - // videojs-contrib-eme will only accept one in the options. - // - // This shouldn't be an issue for most cases as early intialization will handle all - // unique PSSH values, and if they aren't, then encrypted events should have the - // specific information needed for the unique license. + if (desc.flags & 0x40) { + var len = bytes[desc.size]; + desc.url = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToString)(bytes.subarray(desc.size + 1, desc.size + 1 + len)); + desc.size += len; + } // ocr es id - if (mainPlaylist.contentProtection && mainPlaylist.contentProtection[keySystem] && mainPlaylist.contentProtection[keySystem].pssh) { - keySystemContentTypes[keySystem].pssh = mainPlaylist.contentProtection[keySystem].pssh; - } // videojs-contrib-eme accepts the option of specifying: 'com.some.cdm': 'url' - // so we need to prevent overwriting the URL entirely - if (typeof keySystemOptions[keySystem] === 'string') { - keySystemContentTypes[keySystem].url = keySystemOptions[keySystem]; + if (desc.flags & 0x20) { + desc.ocrEsId = bytes[desc.size] << 8 | bytes[desc.size + 1]; + desc.size += 2; } + + desc.descriptors = parseDescriptors(bytes.subarray(desc.size)) || []; + return desc; + } +}, { + id: 0x04, + parser: function parser(bytes) { + // DecoderConfigDescriptor + var desc = { + tag: 0x04, + oti: bytes[0], + streamType: bytes[1], + bufferSize: bytes[2] << 16 | bytes[3] << 8 | bytes[4], + maxBitrate: bytes[5] << 24 | bytes[6] << 16 | bytes[7] << 8 | bytes[8], + avgBitrate: bytes[9] << 24 | bytes[10] << 16 | bytes[11] << 8 | bytes[12], + descriptors: parseDescriptors(bytes.subarray(13)) + }; + return desc; + } +}, { + id: 0x05, + parser: function parser(bytes) { + // DecoderSpecificInfo + return { + tag: 0x05, + bytes: bytes + }; + } +}, { + id: 0x06, + parser: function parser(bytes) { + // SLConfigDescriptor + return { + tag: 0x06, + bytes: bytes + }; } - return merge(keySystemOptions, keySystemContentTypes); -}; +}]; /** - * @typedef {Object} KeySystems + * find any number of boxes by name given a path to it in an iso bmff + * such as mp4. * - * keySystems configuration for https://github.com/videojs/videojs-contrib-eme - * Note: not all options are listed here. + * @param {TypedArray} bytes + * bytes for the iso bmff to search for boxes in * - * @property {Uint8Array} [pssh] - * Protection System Specific Header - */ - -/** - * Goes through all the playlists and collects an array of KeySystems options objects - * containing each playlist's keySystems and their pssh values, if available. + * @param {Uint8Array[]|string[]|string|Uint8Array} name + * An array of paths or a single path representing the name + * of boxes to search through in bytes. Paths may be + * uint8 (character codes) or strings. * - * @param {Object[]} playlists - * The playlists to look through - * @param {string[]} keySystems - * The keySystems to collect pssh values for + * @param {boolean} [complete=false] + * Should we search only for complete boxes on the final path. + * This is very useful when you do not want to get back partial boxes + * in the case of streaming files. * - * @return {KeySystems[]} - * An array of KeySystems objects containing available key systems and their - * pssh values + * @return {Uint8Array[]} + * An array of the end paths that we found. */ -const getAllPsshKeySystemsOptions = (playlists, keySystems) => { - return playlists.reduce((keySystemsArr, playlist) => { - if (!playlist.contentProtection) { - return keySystemsArr; +var findBox = function findBox(bytes, paths, complete) { + if (complete === void 0) { + complete = false; + } + + paths = normalizePaths(paths); + bytes = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)(bytes); + var results = []; + + if (!paths.length) { + // short-circuit the search for empty paths + return results; + } + + var i = 0; + + while (i < bytes.length) { + var size = (bytes[i] << 24 | bytes[i + 1] << 16 | bytes[i + 2] << 8 | bytes[i + 3]) >>> 0; + var type = bytes.subarray(i + 4, i + 8); // invalid box format. + + if (size === 0) { + break; } - const keySystemsOptions = keySystems.reduce((keySystemsObj, keySystem) => { - const keySystemOptions = playlist.contentProtection[keySystem]; - if (keySystemOptions && keySystemOptions.pssh) { - keySystemsObj[keySystem] = { - pssh: keySystemOptions.pssh - }; + + var end = i + size; + + if (end > bytes.length) { + // this box is bigger than the number of bytes we have + // and complete is set, we cannot find any more boxes. + if (complete) { + break; } - return keySystemsObj; - }, {}); - if (Object.keys(keySystemsOptions).length) { - keySystemsArr.push(keySystemsOptions); + + end = bytes.length; } - return keySystemsArr; - }, []); -}; -/** - * Returns a promise that waits for the - * [eme plugin](https://github.com/videojs/videojs-contrib-eme) to create a key session. - * - * Works around https://bugs.chromium.org/p/chromium/issues/detail?id=895449 in non-IE11 - * browsers. - * - * As per the above ticket, this is particularly important for Chrome, where, if - * unencrypted content is appended before encrypted content and the key session has not - * been created, a MEDIA_ERR_DECODE will be thrown once the encrypted content is reached - * during playback. - * - * @param {Object} player - * The player instance - * @param {Object[]} sourceKeySystems - * The key systems options from the player source - * @param {Object} [audioMedia] - * The active audio media playlist (optional) - * @param {Object[]} mainPlaylists - * The playlists found on the main playlist object - * - * @return {Object} - * Promise that resolves when the key session has been created - */ -const waitForKeySessionCreation = ({ - player, - sourceKeySystems, - audioMedia, - mainPlaylists -}) => { - if (!player.eme.initializeMediaKeys) { - return Promise.resolve(); - } // TODO should all audio PSSH values be initialized for DRM? - // - // All unique video rendition pssh values are initialized for DRM, but here only - // the initial audio playlist license is initialized. In theory, an encrypted - // event should be fired if the user switches to an alternative audio playlist - // where a license is required, but this case hasn't yet been tested. In addition, there - // may be many alternate audio playlists unlikely to be used (e.g., multiple different - // languages). + var data = bytes.subarray(i + 8, end); - const playlists = audioMedia ? mainPlaylists.concat([audioMedia]) : mainPlaylists; - const keySystemsOptionsArr = getAllPsshKeySystemsOptions(playlists, Object.keys(sourceKeySystems)); - const initializationFinishedPromises = []; - const keySessionCreatedPromises = []; // Since PSSH values are interpreted as initData, EME will dedupe any duplicates. The - // only place where it should not be deduped is for ms-prefixed APIs, but - // the existence of modern EME APIs in addition to - // ms-prefixed APIs on Edge should prevent this from being a concern. - // initializeMediaKeys also won't use the webkit-prefixed APIs. + if ((0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(type, paths[0])) { + if (paths.length === 1) { + // this is the end of the path and we've found the box we were + // looking for + results.push(data); + } else { + // recursively search for the next box along the path + results.push.apply(results, findBox(data, paths.slice(1), complete)); + } + } - keySystemsOptionsArr.forEach(keySystemsOptions => { - keySessionCreatedPromises.push(new Promise((resolve, reject) => { - player.tech_.one('keysessioncreated', resolve); - })); - initializationFinishedPromises.push(new Promise((resolve, reject) => { - player.eme.initializeMediaKeys({ - keySystems: keySystemsOptions - }, err => { - if (err) { - reject(err); - return; - } - resolve(); - }); - })); - }); // The reasons Promise.race is chosen over Promise.any: - // - // * Promise.any is only available in Safari 14+. - // * None of these promises are expected to reject. If they do reject, it might be - // better here for the race to surface the rejection, rather than mask it by using - // Promise.any. + i = end; + } // we've finished searching all of bytes - return Promise.race([ - // If a session was previously created, these will all finish resolving without - // creating a new session, otherwise it will take until the end of all license - // requests, which is why the key session check is used (to make setup much faster). - Promise.all(initializationFinishedPromises), - // Once a single session is created, the browser knows DRM will be used. - Promise.race(keySessionCreatedPromises)]); + + return results; }; /** - * If the [eme](https://github.com/videojs/videojs-contrib-eme) plugin is available, and - * there are keySystems on the source, sets up source options to prepare the source for - * eme. + * Search for a single matching box by name in an iso bmff format like + * mp4. This function is useful for finding codec boxes which + * can be placed arbitrarily in sample descriptions depending + * on the version of the file or file type. * - * @param {Object} player - * The player instance - * @param {Object[]} sourceKeySystems - * The key systems options from the player source - * @param {Object} media - * The active media playlist - * @param {Object} [audioMedia] - * The active audio media playlist (optional) + * @param {TypedArray} bytes + * bytes for the iso bmff to search for boxes in * - * @return {boolean} - * Whether or not options were configured and EME is available + * @param {string|Uint8Array} name + * The name of the box to find. + * + * @return {Uint8Array[]} + * a subarray of bytes representing the name boxed we found. */ -const setupEmeOptions = ({ - player, - sourceKeySystems, - media, - audioMedia -}) => { - const sourceOptions = emeKeySystems(sourceKeySystems, media, audioMedia); - if (!sourceOptions) { - return false; - } - player.currentSource().keySystems = sourceOptions; // eme handles the rest of the setup, so if it is missing - // do nothing. +var findNamedBox = function findNamedBox(bytes, name) { + name = normalizePath(name); - if (sourceOptions && !player.eme) { - videojs.log.warn('DRM encrypted source cannot be decrypted without a DRM plugin'); - return false; - } - return true; -}; -const getVhsLocalStorage = () => { - if (!(global_window__WEBPACK_IMPORTED_MODULE_0___default().localStorage)) { - return null; - } - const storedObject = global_window__WEBPACK_IMPORTED_MODULE_0___default().localStorage.getItem(LOCAL_STORAGE_KEY); - if (!storedObject) { - return null; - } - try { - return JSON.parse(storedObject); - } catch (e) { - // someone may have tampered with the value - return null; - } -}; -const updateVhsLocalStorage = options => { - if (!(global_window__WEBPACK_IMPORTED_MODULE_0___default().localStorage)) { - return false; - } - let objectToStore = getVhsLocalStorage(); - objectToStore = objectToStore ? merge(objectToStore, options) : options; - try { - global_window__WEBPACK_IMPORTED_MODULE_0___default().localStorage.setItem(LOCAL_STORAGE_KEY, JSON.stringify(objectToStore)); - } catch (e) { - // Throws if storage is full (e.g., always on iOS 5+ Safari private mode, where - // storage is set to 0). - // https://developer.mozilla.org/en-US/docs/Web/API/Storage/setItem#Exceptions - // No need to perform any operation. - return false; + if (!name.length) { + // short-circuit the search for empty paths + return bytes.subarray(bytes.length); } - return objectToStore; -}; -/** - * Parses VHS-supported media types from data URIs. See - * https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URIs - * for information on data URIs. - * - * @param {string} dataUri - * The data URI - * - * @return {string|Object} - * The parsed object/string, or the original string if no supported media type - * was found - */ -const expandDataUri = dataUri => { - if (dataUri.toLowerCase().indexOf('data:application/vnd.videojs.vhs+json,') === 0) { - return JSON.parse(dataUri.substring(dataUri.indexOf(',') + 1)); - } // no known case for this data URI, return the string as-is + var i = 0; - return dataUri; + while (i < bytes.length) { + if ((0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes.subarray(i, i + name.length), name)) { + var size = (bytes[i - 4] << 24 | bytes[i - 3] << 16 | bytes[i - 2] << 8 | bytes[i - 1]) >>> 0; + var end = size > 1 ? i + size : bytes.byteLength; + return bytes.subarray(i + 4, end); + } + + i++; + } // we've finished searching all of bytes + + + return bytes.subarray(bytes.length); }; -/** - * Adds a request hook to an xhr object - * - * @param {Object} xhr object to add the onRequest hook to - * @param {function} callback hook function for an xhr request - */ -const addOnRequestHook = (xhr, callback) => { - if (!xhr._requestCallbackSet) { - xhr._requestCallbackSet = new Set(); +var parseSamples = function parseSamples(data, entrySize, parseEntry) { + if (entrySize === void 0) { + entrySize = 4; } - xhr._requestCallbackSet.add(callback); -}; -/** - * Adds a response hook to an xhr object - * - * @param {Object} xhr object to add the onResponse hook to - * @param {function} callback hook function for an xhr response - */ -const addOnResponseHook = (xhr, callback) => { - if (!xhr._responseCallbackSet) { - xhr._responseCallbackSet = new Set(); + if (parseEntry === void 0) { + parseEntry = function parseEntry(d) { + return (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(d); + }; } - xhr._responseCallbackSet.add(callback); -}; -/** - * Removes a request hook on an xhr object, deletes the onRequest set if empty. - * - * @param {Object} xhr object to remove the onRequest hook from - * @param {function} callback hook function to remove - */ -const removeOnRequestHook = (xhr, callback) => { - if (!xhr._requestCallbackSet) { - return; + var entries = []; + + if (!data || !data.length) { + return entries; } - xhr._requestCallbackSet.delete(callback); - if (!xhr._requestCallbackSet.size) { - delete xhr._requestCallbackSet; + + var entryCount = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(data.subarray(4, 8)); + + for (var i = 8; entryCount; i += entrySize, entryCount--) { + entries.push(parseEntry(data.subarray(i, i + entrySize))); } + + return entries; }; -/** - * Removes a response hook on an xhr object, deletes the onResponse set if empty. - * - * @param {Object} xhr object to remove the onResponse hook from - * @param {function} callback hook function to remove - */ -const removeOnResponseHook = (xhr, callback) => { - if (!xhr._responseCallbackSet) { - return; - } - xhr._responseCallbackSet.delete(callback); - if (!xhr._responseCallbackSet.size) { - delete xhr._responseCallbackSet; +var buildFrameTable = function buildFrameTable(stbl, timescale) { + var keySamples = parseSamples(findBox(stbl, ['stss'])[0]); + var chunkOffsets = parseSamples(findBox(stbl, ['stco'])[0]); + var timeToSamples = parseSamples(findBox(stbl, ['stts'])[0], 8, function (entry) { + return { + sampleCount: (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(entry.subarray(0, 4)), + sampleDelta: (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(entry.subarray(4, 8)) + }; + }); + var samplesToChunks = parseSamples(findBox(stbl, ['stsc'])[0], 12, function (entry) { + return { + firstChunk: (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(entry.subarray(0, 4)), + samplesPerChunk: (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(entry.subarray(4, 8)), + sampleDescriptionIndex: (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(entry.subarray(8, 12)) + }; + }); + var stsz = findBox(stbl, ['stsz'])[0]; // stsz starts with a 4 byte sampleSize which we don't need + + var sampleSizes = parseSamples(stsz && stsz.length && stsz.subarray(4) || null); + var frames = []; + + for (var chunkIndex = 0; chunkIndex < chunkOffsets.length; chunkIndex++) { + var samplesInChunk = void 0; + + for (var i = 0; i < samplesToChunks.length; i++) { + var sampleToChunk = samplesToChunks[i]; + var isThisOne = chunkIndex + 1 >= sampleToChunk.firstChunk && (i + 1 >= samplesToChunks.length || chunkIndex + 1 < samplesToChunks[i + 1].firstChunk); + + if (isThisOne) { + samplesInChunk = sampleToChunk.samplesPerChunk; + break; + } + } + + var chunkOffset = chunkOffsets[chunkIndex]; + + for (var _i = 0; _i < samplesInChunk; _i++) { + var frameEnd = sampleSizes[frames.length]; // if we don't have key samples every frame is a keyframe + + var keyframe = !keySamples.length; + + if (keySamples.length && keySamples.indexOf(frames.length + 1) !== -1) { + keyframe = true; + } + + var frame = { + keyframe: keyframe, + start: chunkOffset, + end: chunkOffset + frameEnd + }; + + for (var k = 0; k < timeToSamples.length; k++) { + var _timeToSamples$k = timeToSamples[k], + sampleCount = _timeToSamples$k.sampleCount, + sampleDelta = _timeToSamples$k.sampleDelta; + + if (frames.length <= sampleCount) { + // ms to ns + var lastTimestamp = frames.length ? frames[frames.length - 1].timestamp : 0; + frame.timestamp = lastTimestamp + sampleDelta / timescale * 1000; + frame.duration = sampleDelta; + break; + } + } + + frames.push(frame); + chunkOffset += frameEnd; + } } + + return frames; }; -/** - * Whether the browser has built-in HLS support. - */ +var addSampleDescription = function addSampleDescription(track, bytes) { + var codec = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToString)(bytes.subarray(0, 4)); -Vhs.supportsNativeHls = function () { - if (!(global_document__WEBPACK_IMPORTED_MODULE_1___default()) || !(global_document__WEBPACK_IMPORTED_MODULE_1___default().createElement)) { - return false; + if (track.type === 'video') { + track.info = track.info || {}; + track.info.width = bytes[28] << 8 | bytes[29]; + track.info.height = bytes[30] << 8 | bytes[31]; + } else if (track.type === 'audio') { + track.info = track.info || {}; + track.info.channels = bytes[20] << 8 | bytes[21]; + track.info.bitDepth = bytes[22] << 8 | bytes[23]; + track.info.sampleRate = bytes[28] << 8 | bytes[29]; } - const video = global_document__WEBPACK_IMPORTED_MODULE_1___default().createElement('video'); // native HLS is definitely not supported if HTML5 video isn't - if (!videojs.getTech('Html5').isSupported()) { - return false; - } // HLS manifests can go by many mime-types + if (codec === 'avc1') { + var avcC = findNamedBox(bytes, 'avcC'); // AVCDecoderConfigurationRecord - const canPlay = [ - // Apple santioned - 'application/vnd.apple.mpegurl', - // Apple sanctioned for backwards compatibility - 'audio/mpegurl', - // Very common - 'audio/x-mpegurl', - // Very common - 'application/x-mpegurl', - // Included for completeness - 'video/x-mpegurl', 'video/mpegurl', 'application/mpegurl']; - return canPlay.some(function (canItPlay) { - return /maybe|probably/i.test(video.canPlayType(canItPlay)); - }); -}(); -Vhs.supportsNativeDash = function () { - if (!(global_document__WEBPACK_IMPORTED_MODULE_1___default()) || !(global_document__WEBPACK_IMPORTED_MODULE_1___default().createElement) || !videojs.getTech('Html5').isSupported()) { - return false; - } - return /maybe|probably/i.test(global_document__WEBPACK_IMPORTED_MODULE_1___default().createElement('video').canPlayType('application/dash+xml')); -}(); -Vhs.supportsTypeNatively = type => { - if (type === 'hls') { - return Vhs.supportsNativeHls; - } - if (type === 'dash') { - return Vhs.supportsNativeDash; - } - return false; -}; -/** - * VHS is a source handler, not a tech. Make sure attempts to use it - * as one do not cause exceptions. - */ + codec += "." + (0,_codec_helpers_js__WEBPACK_IMPORTED_MODULE_1__.getAvcCodec)(avcC); + track.info.avcC = avcC; // TODO: do we need to parse all this? + + /* { + configurationVersion: avcC[0], + profile: avcC[1], + profileCompatibility: avcC[2], + level: avcC[3], + lengthSizeMinusOne: avcC[4] & 0x3 + }; + let spsNalUnitCount = avcC[5] & 0x1F; + const spsNalUnits = track.info.avc.spsNalUnits = []; + // past spsNalUnitCount + let offset = 6; + while (spsNalUnitCount--) { + const nalLen = avcC[offset] << 8 | avcC[offset + 1]; + spsNalUnits.push(avcC.subarray(offset + 2, offset + 2 + nalLen)); + offset += nalLen + 2; + } + let ppsNalUnitCount = avcC[offset]; + const ppsNalUnits = track.info.avc.ppsNalUnits = []; + // past ppsNalUnitCount + offset += 1; + while (ppsNalUnitCount--) { + const nalLen = avcC[offset] << 8 | avcC[offset + 1]; + ppsNalUnits.push(avcC.subarray(offset + 2, offset + 2 + nalLen)); + offset += nalLen + 2; + }*/ + // HEVCDecoderConfigurationRecord + } else if (codec === 'hvc1' || codec === 'hev1') { + codec += "." + (0,_codec_helpers_js__WEBPACK_IMPORTED_MODULE_1__.getHvcCodec)(findNamedBox(bytes, 'hvcC')); + } else if (codec === 'mp4a' || codec === 'mp4v') { + var esds = findNamedBox(bytes, 'esds'); + var esDescriptor = parseDescriptors(esds.subarray(4))[0]; + var decoderConfig = esDescriptor && esDescriptor.descriptors.filter(function (_ref) { + var tag = _ref.tag; + return tag === 0x04; + })[0]; -Vhs.isSupported = function () { - return videojs.log.warn('VHS is no longer a tech. Please remove it from ' + 'your player\'s techOrder.'); -}; -/** - * A global function for setting an onRequest hook - * - * @param {function} callback for request modifiction - */ + if (decoderConfig) { + // most codecs do not have a further '.' + // such as 0xa5 for ac-3 and 0xa6 for e-ac-3 + codec += '.' + (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toHexString)(decoderConfig.oti); -Vhs.xhr.onRequest = function (callback) { - addOnRequestHook(Vhs.xhr, callback); -}; -/** - * A global function for setting an onResponse hook - * - * @param {callback} callback for response data retrieval - */ + if (decoderConfig.oti === 0x40) { + codec += '.' + (decoderConfig.descriptors[0].bytes[0] >> 3).toString(); + } else if (decoderConfig.oti === 0x20) { + codec += '.' + decoderConfig.descriptors[0].bytes[4].toString(); + } else if (decoderConfig.oti === 0xdd) { + codec = 'vorbis'; + } + } else if (track.type === 'audio') { + codec += '.40.2'; + } else { + codec += '.20.9'; + } + } else if (codec === 'av01') { + // AV1DecoderConfigurationRecord + codec += "." + (0,_codec_helpers_js__WEBPACK_IMPORTED_MODULE_1__.getAv1Codec)(findNamedBox(bytes, 'av1C')); + } else if (codec === 'vp09') { + // VPCodecConfigurationRecord + var vpcC = findNamedBox(bytes, 'vpcC'); // https://www.webmproject.org/vp9/mp4/ -Vhs.xhr.onResponse = function (callback) { - addOnResponseHook(Vhs.xhr, callback); -}; -/** - * Deletes a global onRequest callback if it exists - * - * @param {function} callback to delete from the global set - */ + var profile = vpcC[0]; + var level = vpcC[1]; + var bitDepth = vpcC[2] >> 4; + var chromaSubsampling = (vpcC[2] & 0x0F) >> 1; + var videoFullRangeFlag = (vpcC[2] & 0x0F) >> 3; + var colourPrimaries = vpcC[3]; + var transferCharacteristics = vpcC[4]; + var matrixCoefficients = vpcC[5]; + codec += "." + (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.padStart)(profile, 2, '0'); + codec += "." + (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.padStart)(level, 2, '0'); + codec += "." + (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.padStart)(bitDepth, 2, '0'); + codec += "." + (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.padStart)(chromaSubsampling, 2, '0'); + codec += "." + (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.padStart)(colourPrimaries, 2, '0'); + codec += "." + (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.padStart)(transferCharacteristics, 2, '0'); + codec += "." + (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.padStart)(matrixCoefficients, 2, '0'); + codec += "." + (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.padStart)(videoFullRangeFlag, 2, '0'); + } else if (codec === 'theo') { + codec = 'theora'; + } else if (codec === 'spex') { + codec = 'speex'; + } else if (codec === '.mp3') { + codec = 'mp4a.40.34'; + } else if (codec === 'msVo') { + codec = 'vorbis'; + } else if (codec === 'Opus') { + codec = 'opus'; + var dOps = findNamedBox(bytes, 'dOps'); + track.info.opus = (0,_opus_helpers_js__WEBPACK_IMPORTED_MODULE_2__.parseOpusHead)(dOps); // TODO: should this go into the webm code?? + // Firefox requires a codecDelay for opus playback + // see https://bugzilla.mozilla.org/show_bug.cgi?id=1276238 -Vhs.xhr.offRequest = function (callback) { - removeOnRequestHook(Vhs.xhr, callback); -}; -/** - * Deletes a global onResponse callback if it exists - * - * @param {function} callback to delete from the global set - */ + track.info.codecDelay = 6500000; + } else { + codec = codec.toLowerCase(); + } + /* eslint-enable */ + // flac, ac-3, ec-3, opus -Vhs.xhr.offResponse = function (callback) { - removeOnResponseHook(Vhs.xhr, callback); + + track.codec = codec; }; -const Component = videojs.getComponent('Component'); -/** - * The Vhs Handler object, where we orchestrate all of the parts - * of VHS to interact with video.js - * - * @class VhsHandler - * @extends videojs.Component - * @param {Object} source the soruce object - * @param {Tech} tech the parent tech object - * @param {Object} options optional and required options - */ +var parseTracks = function parseTracks(bytes, frameTable) { + if (frameTable === void 0) { + frameTable = true; + } -class VhsHandler extends Component { - constructor(source, tech, options) { - super(tech, options.vhs); // if a tech level `initialBandwidth` option was passed - // use that over the VHS level `bandwidth` option + bytes = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)(bytes); + var traks = findBox(bytes, ['moov', 'trak'], true); + var tracks = []; + traks.forEach(function (trak) { + var track = { + bytes: trak + }; + var mdia = findBox(trak, ['mdia'])[0]; + var hdlr = findBox(mdia, ['hdlr'])[0]; + var trakType = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToString)(hdlr.subarray(8, 12)); - if (typeof options.initialBandwidth === 'number') { - this.options_.bandwidth = options.initialBandwidth; + if (trakType === 'soun') { + track.type = 'audio'; + } else if (trakType === 'vide') { + track.type = 'video'; + } else { + track.type = trakType; } - this.logger_ = logger('VhsHandler'); // we need access to the player in some cases, - // so, get it from Video.js via the `playerId` - if (tech.options_ && tech.options_.playerId) { - const _player = videojs.getPlayer(tech.options_.playerId); - this.player_ = _player; - } - this.tech_ = tech; - this.source_ = source; - this.stats = {}; - this.ignoreNextSeekingEvent_ = false; - this.setOptions_(); - if (this.options_.overrideNative && tech.overrideNativeAudioTracks && tech.overrideNativeVideoTracks) { - tech.overrideNativeAudioTracks(true); - tech.overrideNativeVideoTracks(true); - } else if (this.options_.overrideNative && (tech.featuresNativeVideoTracks || tech.featuresNativeAudioTracks)) { - // overriding native VHS only works if audio tracks have been emulated - // error early if we're misconfigured - throw new Error('Overriding native VHS requires emulated tracks. ' + 'See https://git.io/vMpjB'); - } // listen for fullscreenchange events for this player so that we - // can adjust our quality selection quickly + var tkhd = findBox(trak, ['tkhd'])[0]; - this.on((global_document__WEBPACK_IMPORTED_MODULE_1___default()), ['fullscreenchange', 'webkitfullscreenchange', 'mozfullscreenchange', 'MSFullscreenChange'], event => { - const fullscreenElement = (global_document__WEBPACK_IMPORTED_MODULE_1___default().fullscreenElement) || (global_document__WEBPACK_IMPORTED_MODULE_1___default().webkitFullscreenElement) || (global_document__WEBPACK_IMPORTED_MODULE_1___default().mozFullScreenElement) || (global_document__WEBPACK_IMPORTED_MODULE_1___default().msFullscreenElement); - if (fullscreenElement && fullscreenElement.contains(this.tech_.el())) { - this.playlistController_.fastQualityChange_(); - } else { - // When leaving fullscreen, since the in page pixel dimensions should be smaller - // than full screen, see if there should be a rendition switch down to preserve - // bandwidth. - this.playlistController_.checkABR_(); - } - }); - this.on(this.tech_, 'seeking', function () { - if (this.ignoreNextSeekingEvent_) { - this.ignoreNextSeekingEvent_ = false; - return; - } - this.setCurrentTime(this.tech_.currentTime()); - }); - this.on(this.tech_, 'error', function () { - // verify that the error was real and we are loaded - // enough to have pc loaded. - if (this.tech_.error() && this.playlistController_) { - this.playlistController_.pauseLoading(); - } - }); - this.on(this.tech_, 'play', this.play); - } - setOptions_() { - // defaults - this.options_.withCredentials = this.options_.withCredentials || false; - this.options_.limitRenditionByPlayerDimensions = this.options_.limitRenditionByPlayerDimensions === false ? false : true; - this.options_.useDevicePixelRatio = this.options_.useDevicePixelRatio || false; - this.options_.useBandwidthFromLocalStorage = typeof this.source_.useBandwidthFromLocalStorage !== 'undefined' ? this.source_.useBandwidthFromLocalStorage : this.options_.useBandwidthFromLocalStorage || false; - this.options_.useForcedSubtitles = this.options_.useForcedSubtitles || false; - this.options_.useNetworkInformationApi = this.options_.useNetworkInformationApi || false; - this.options_.useDtsForTimestampOffset = this.options_.useDtsForTimestampOffset || false; - this.options_.calculateTimestampOffsetForEachSegment = this.options_.calculateTimestampOffsetForEachSegment || false; - this.options_.customTagParsers = this.options_.customTagParsers || []; - this.options_.customTagMappers = this.options_.customTagMappers || []; - this.options_.cacheEncryptionKeys = this.options_.cacheEncryptionKeys || false; - this.options_.llhls = this.options_.llhls === false ? false : true; - this.options_.bufferBasedABR = this.options_.bufferBasedABR || false; - if (typeof this.options_.playlistExclusionDuration !== 'number') { - this.options_.playlistExclusionDuration = 60; + if (tkhd) { + var view = new DataView(tkhd.buffer, tkhd.byteOffset, tkhd.byteLength); + var tkhdVersion = view.getUint8(0); + track.number = tkhdVersion === 0 ? view.getUint32(12) : view.getUint32(20); } - if (typeof this.options_.bandwidth !== 'number') { - if (this.options_.useBandwidthFromLocalStorage) { - const storedObject = getVhsLocalStorage(); - if (storedObject && storedObject.bandwidth) { - this.options_.bandwidth = storedObject.bandwidth; - this.tech_.trigger({ - type: 'usage', - name: 'vhs-bandwidth-from-local-storage' - }); - } - if (storedObject && storedObject.throughput) { - this.options_.throughput = storedObject.throughput; - this.tech_.trigger({ - type: 'usage', - name: 'vhs-throughput-from-local-storage' - }); - } - } - } // if bandwidth was not set by options or pulled from local storage, start playlist - // selection at a reasonable bandwidth - if (typeof this.options_.bandwidth !== 'number') { - this.options_.bandwidth = Config.INITIAL_BANDWIDTH; - } // If the bandwidth number is unchanged from the initial setting - // then this takes precedence over the enableLowInitialPlaylist option + var mdhd = findBox(mdia, ['mdhd'])[0]; - this.options_.enableLowInitialPlaylist = this.options_.enableLowInitialPlaylist && this.options_.bandwidth === Config.INITIAL_BANDWIDTH; // grab options passed to player.src + if (mdhd) { + // mdhd is a FullBox, meaning it will have its own version as the first byte + var version = mdhd[0]; + var index = version === 0 ? 12 : 20; + track.timescale = (mdhd[index] << 24 | mdhd[index + 1] << 16 | mdhd[index + 2] << 8 | mdhd[index + 3]) >>> 0; + } - ['withCredentials', 'useDevicePixelRatio', 'limitRenditionByPlayerDimensions', 'bandwidth', 'customTagParsers', 'customTagMappers', 'cacheEncryptionKeys', 'playlistSelector', 'initialPlaylistSelector', 'bufferBasedABR', 'liveRangeSafeTimeDelta', 'llhls', 'useForcedSubtitles', 'useNetworkInformationApi', 'useDtsForTimestampOffset', 'calculateTimestampOffsetForEachSegment', 'exactManifestTimings', 'leastPixelDiffSelector'].forEach(option => { - if (typeof this.source_[option] !== 'undefined') { - this.options_[option] = this.source_[option]; - } - }); - this.limitRenditionByPlayerDimensions = this.options_.limitRenditionByPlayerDimensions; - this.useDevicePixelRatio = this.options_.useDevicePixelRatio; - } - /** - * called when player.src gets called, handle a new source - * - * @param {Object} src the source object to handle - */ + var stbl = findBox(mdia, ['minf', 'stbl'])[0]; + var stsd = findBox(stbl, ['stsd'])[0]; + var descriptionCount = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(stsd.subarray(4, 8)); + var offset = 8; // add codec and codec info - src(src, type) { - // do nothing if the src is falsey - if (!src) { - return; + while (descriptionCount--) { + var len = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(stsd.subarray(offset, offset + 4)); + var sampleDescriptor = stsd.subarray(offset + 4, offset + 4 + len); + addSampleDescription(track, sampleDescriptor); + offset += 4 + len; } - this.setOptions_(); // add main playlist controller options - - this.options_.src = expandDataUri(this.source_.src); - this.options_.tech = this.tech_; - this.options_.externVhs = Vhs; - this.options_.sourceType = (0,_videojs_vhs_utils_es_media_types_js__WEBPACK_IMPORTED_MODULE_10__.simpleTypeFromSourceType)(type); // Whenever we seek internally, we should update the tech - this.options_.seekTo = time => { - this.tech_.setCurrentTime(time); - }; - this.playlistController_ = new PlaylistController(this.options_); - const playbackWatcherOptions = merge({ - liveRangeSafeTimeDelta: SAFE_TIME_DELTA - }, this.options_, { - seekable: () => this.seekable(), - media: () => this.playlistController_.media(), - playlistController: this.playlistController_ - }); - this.playbackWatcher_ = new PlaybackWatcher(playbackWatcherOptions); - this.playlistController_.on('error', () => { - const player = videojs.players[this.tech_.options_.playerId]; - let error = this.playlistController_.error; - if (typeof error === 'object' && !error.code) { - error.code = 3; - } else if (typeof error === 'string') { - error = { - message: error, - code: 3 - }; - } - player.error(error); - }); - const defaultSelector = this.options_.bufferBasedABR ? Vhs.movingAverageBandwidthSelector(0.55) : Vhs.STANDARD_PLAYLIST_SELECTOR; // `this` in selectPlaylist should be the VhsHandler for backwards - // compatibility with < v2 + if (frameTable) { + track.frameTable = buildFrameTable(stbl, track.timescale); + } // codec has no sub parameters - this.playlistController_.selectPlaylist = this.selectPlaylist ? this.selectPlaylist.bind(this) : defaultSelector.bind(this); - this.playlistController_.selectInitialPlaylist = Vhs.INITIAL_PLAYLIST_SELECTOR.bind(this); // re-expose some internal objects for backwards compatibility with < v2 - this.playlists = this.playlistController_.mainPlaylistLoader_; - this.mediaSource = this.playlistController_.mediaSource; // Proxy assignment of some properties to the main playlist - // controller. Using a custom property for backwards compatibility - // with < v2 + tracks.push(track); + }); + return tracks; +}; +var parseMediaInfo = function parseMediaInfo(bytes) { + var mvhd = findBox(bytes, ['moov', 'mvhd'], true)[0]; - Object.defineProperties(this, { - selectPlaylist: { - get() { - return this.playlistController_.selectPlaylist; - }, - set(selectPlaylist) { - this.playlistController_.selectPlaylist = selectPlaylist.bind(this); - } - }, - throughput: { - get() { - return this.playlistController_.mainSegmentLoader_.throughput.rate; - }, - set(throughput) { - this.playlistController_.mainSegmentLoader_.throughput.rate = throughput; // By setting `count` to 1 the throughput value becomes the starting value - // for the cumulative average + if (!mvhd || !mvhd.length) { + return; + } - this.playlistController_.mainSegmentLoader_.throughput.count = 1; - } - }, - bandwidth: { - get() { - let playerBandwidthEst = this.playlistController_.mainSegmentLoader_.bandwidth; - const networkInformation = (global_window__WEBPACK_IMPORTED_MODULE_0___default().navigator).connection || (global_window__WEBPACK_IMPORTED_MODULE_0___default().navigator).mozConnection || (global_window__WEBPACK_IMPORTED_MODULE_0___default().navigator).webkitConnection; - const tenMbpsAsBitsPerSecond = 10e6; - if (this.options_.useNetworkInformationApi && networkInformation) { - // downlink returns Mbps - // https://developer.mozilla.org/en-US/docs/Web/API/NetworkInformation/downlink - const networkInfoBandwidthEstBitsPerSec = networkInformation.downlink * 1000 * 1000; // downlink maxes out at 10 Mbps. In the event that both networkInformationApi and the player - // estimate a bandwidth greater than 10 Mbps, use the larger of the two estimates to ensure that - // high quality streams are not filtered out. + var info = {}; // ms to ns + // mvhd v1 has 8 byte duration and other fields too - if (networkInfoBandwidthEstBitsPerSec >= tenMbpsAsBitsPerSecond && playerBandwidthEst >= tenMbpsAsBitsPerSecond) { - playerBandwidthEst = Math.max(playerBandwidthEst, networkInfoBandwidthEstBitsPerSec); - } else { - playerBandwidthEst = networkInfoBandwidthEstBitsPerSec; - } - } - return playerBandwidthEst; - }, - set(bandwidth) { - this.playlistController_.mainSegmentLoader_.bandwidth = bandwidth; // setting the bandwidth manually resets the throughput counter - // `count` is set to zero that current value of `rate` isn't included - // in the cumulative average + if (mvhd[0] === 1) { + info.timestampScale = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(mvhd.subarray(20, 24)); + info.duration = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(mvhd.subarray(24, 32)); + } else { + info.timestampScale = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(mvhd.subarray(12, 16)); + info.duration = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesToNumber)(mvhd.subarray(16, 20)); + } - this.playlistController_.mainSegmentLoader_.throughput = { - rate: 0, - count: 0 - }; - } - }, - /** - * `systemBandwidth` is a combination of two serial processes bit-rates. The first - * is the network bitrate provided by `bandwidth` and the second is the bitrate of - * the entire process after that - decryption, transmuxing, and appending - provided - * by `throughput`. - * - * Since the two process are serial, the overall system bandwidth is given by: - * sysBandwidth = 1 / (1 / bandwidth + 1 / throughput) - */ - systemBandwidth: { - get() { - const invBandwidth = 1 / (this.bandwidth || 1); - let invThroughput; - if (this.throughput > 0) { - invThroughput = 1 / this.throughput; - } else { - invThroughput = 0; - } - const systemBitrate = Math.floor(1 / (invBandwidth + invThroughput)); - return systemBitrate; - }, - set() { - videojs.log.error('The "systemBandwidth" property is read-only'); - } - } - }); - if (this.options_.bandwidth) { - this.bandwidth = this.options_.bandwidth; - } - if (this.options_.throughput) { - this.throughput = this.options_.throughput; - } - Object.defineProperties(this.stats, { - bandwidth: { - get: () => this.bandwidth || 0, - enumerable: true - }, - mediaRequests: { - get: () => this.playlistController_.mediaRequests_() || 0, - enumerable: true - }, - mediaRequestsAborted: { - get: () => this.playlistController_.mediaRequestsAborted_() || 0, - enumerable: true - }, - mediaRequestsTimedout: { - get: () => this.playlistController_.mediaRequestsTimedout_() || 0, - enumerable: true - }, - mediaRequestsErrored: { - get: () => this.playlistController_.mediaRequestsErrored_() || 0, - enumerable: true - }, - mediaTransferDuration: { - get: () => this.playlistController_.mediaTransferDuration_() || 0, - enumerable: true - }, - mediaBytesTransferred: { - get: () => this.playlistController_.mediaBytesTransferred_() || 0, - enumerable: true - }, - mediaSecondsLoaded: { - get: () => this.playlistController_.mediaSecondsLoaded_() || 0, - enumerable: true - }, - mediaAppends: { - get: () => this.playlistController_.mediaAppends_() || 0, - enumerable: true - }, - mainAppendsToLoadedData: { - get: () => this.playlistController_.mainAppendsToLoadedData_() || 0, - enumerable: true - }, - audioAppendsToLoadedData: { - get: () => this.playlistController_.audioAppendsToLoadedData_() || 0, - enumerable: true - }, - appendsToLoadedData: { - get: () => this.playlistController_.appendsToLoadedData_() || 0, - enumerable: true - }, - timeToLoadedData: { - get: () => this.playlistController_.timeToLoadedData_() || 0, - enumerable: true - }, - buffered: { - get: () => timeRangesToArray(this.tech_.buffered()), - enumerable: true - }, - currentTime: { - get: () => this.tech_.currentTime(), - enumerable: true - }, - currentSource: { - get: () => this.tech_.currentSource_, - enumerable: true - }, - currentTech: { - get: () => this.tech_.name_, - enumerable: true - }, - duration: { - get: () => this.tech_.duration(), - enumerable: true - }, - main: { - get: () => this.playlists.main, - enumerable: true - }, - playerDimensions: { - get: () => this.tech_.currentDimensions(), - enumerable: true - }, - seekable: { - get: () => timeRangesToArray(this.tech_.seekable()), - enumerable: true - }, - timestamp: { - get: () => Date.now(), - enumerable: true - }, - videoPlaybackQuality: { - get: () => this.tech_.getVideoPlaybackQuality(), - enumerable: true - } - }); - this.tech_.one('canplay', this.playlistController_.setupFirstPlay.bind(this.playlistController_)); - this.tech_.on('bandwidthupdate', () => { - if (this.options_.useBandwidthFromLocalStorage) { - updateVhsLocalStorage({ - bandwidth: this.bandwidth, - throughput: Math.round(this.throughput) - }); - } - }); - this.playlistController_.on('selectedinitialmedia', () => { - // Add the manual rendition mix-in to VhsHandler - renditionSelectionMixin(this); - }); - this.playlistController_.sourceUpdater_.on('createdsourcebuffers', () => { - this.setupEme_(); - }); // the bandwidth of the primary segment loader is our best - // estimate of overall bandwidth + info.bytes = mvhd; + return info; +}; - this.on(this.playlistController_, 'progress', function () { - this.tech_.trigger('progress'); - }); // In the live case, we need to ignore the very first `seeking` event since - // that will be the result of the seek-to-live behavior +/***/ }), - this.on(this.playlistController_, 'firstplay', function () { - this.ignoreNextSeekingEvent_ = true; - }); - this.setupQualityLevels_(); // do nothing if the tech has been disposed already - // this can occur if someone sets the src in player.ready(), for instance +/***/ "./node_modules/video.js/node_modules/@videojs/vhs-utils/es/nal-helpers.js": +/*!*********************************************************************************!*\ + !*** ./node_modules/video.js/node_modules/@videojs/vhs-utils/es/nal-helpers.js ***! + \*********************************************************************************/ +/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { - if (!this.tech_.el()) { - return; - } - this.mediaSourceUrl_ = global_window__WEBPACK_IMPORTED_MODULE_0___default().URL.createObjectURL(this.playlistController_.mediaSource); - this.tech_.src(this.mediaSourceUrl_); - } - createKeySessions_() { - const audioPlaylistLoader = this.playlistController_.mediaTypes_.AUDIO.activePlaylistLoader; - this.logger_('waiting for EME key session creation'); - waitForKeySessionCreation({ - player: this.player_, - sourceKeySystems: this.source_.keySystems, - audioMedia: audioPlaylistLoader && audioPlaylistLoader.media(), - mainPlaylists: this.playlists.main.playlists - }).then(() => { - this.logger_('created EME key session'); - this.playlistController_.sourceUpdater_.initializedEme(); - }).catch(err => { - this.logger_('error while creating EME key session', err); - this.player_.error({ - message: 'Failed to initialize media keys for EME', - code: 3 - }); - }); - } - handleWaitingForKey_() { - // If waitingforkey is fired, it's possible that the data that's necessary to retrieve - // the key is in the manifest. While this should've happened on initial source load, it - // may happen again in live streams where the keys change, and the manifest info - // reflects the update. - // - // Because videojs-contrib-eme compares the PSSH data we send to that of PSSH data it's - // already requested keys for, we don't have to worry about this generating extraneous - // requests. - this.logger_('waitingforkey fired, attempting to create any new key sessions'); - this.createKeySessions_(); - } - /** - * If necessary and EME is available, sets up EME options and waits for key session - * creation. - * - * This function also updates the source updater so taht it can be used, as for some - * browsers, EME must be configured before content is appended (if appending unencrypted - * content before encrypted content). - */ +"use strict"; +__webpack_require__.r(__webpack_exports__); +/* harmony export */ __webpack_require__.d(__webpack_exports__, { +/* harmony export */ EMULATION_PREVENTION: () => (/* binding */ EMULATION_PREVENTION), +/* harmony export */ NAL_TYPE_ONE: () => (/* binding */ NAL_TYPE_ONE), +/* harmony export */ NAL_TYPE_TWO: () => (/* binding */ NAL_TYPE_TWO), +/* harmony export */ discardEmulationPreventionBytes: () => (/* binding */ discardEmulationPreventionBytes), +/* harmony export */ findH264Nal: () => (/* binding */ findH264Nal), +/* harmony export */ findH265Nal: () => (/* binding */ findH265Nal), +/* harmony export */ findNal: () => (/* binding */ findNal) +/* harmony export */ }); +/* harmony import */ var _byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./byte-helpers.js */ "./node_modules/video.js/node_modules/@videojs/vhs-utils/es/byte-helpers.js"); - setupEme_() { - const audioPlaylistLoader = this.playlistController_.mediaTypes_.AUDIO.activePlaylistLoader; - const didSetupEmeOptions = setupEmeOptions({ - player: this.player_, - sourceKeySystems: this.source_.keySystems, - media: this.playlists.media(), - audioMedia: audioPlaylistLoader && audioPlaylistLoader.media() - }); - this.player_.tech_.on('keystatuschange', e => { - if (e.status !== 'output-restricted') { - return; - } - const mainPlaylist = this.playlistController_.main(); - if (!mainPlaylist || !mainPlaylist.playlists) { - return; - } - const excludedHDPlaylists = []; // Assume all HD streams are unplayable and exclude them from ABR selection +var NAL_TYPE_ONE = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x00, 0x00, 0x00, 0x01]); +var NAL_TYPE_TWO = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x00, 0x00, 0x01]); +var EMULATION_PREVENTION = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)([0x00, 0x00, 0x03]); +/** + * Expunge any "Emulation Prevention" bytes from a "Raw Byte + * Sequence Payload" + * + * @param data {Uint8Array} the bytes of a RBSP from a NAL + * unit + * @return {Uint8Array} the RBSP without any Emulation + * Prevention Bytes + */ - mainPlaylist.playlists.forEach(playlist => { - if (playlist && playlist.attributes && playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.height >= 720) { - if (!playlist.excludeUntil || playlist.excludeUntil < Infinity) { - playlist.excludeUntil = Infinity; - excludedHDPlaylists.push(playlist); - } - } - }); - if (excludedHDPlaylists.length) { - videojs.log.warn('DRM keystatus changed to "output-restricted." Removing the following HD playlists ' + 'that will most likely fail to play and clearing the buffer. ' + 'This may be due to HDCP restrictions on the stream and the capabilities of the current device.', ...excludedHDPlaylists); // Clear the buffer before switching playlists, since it may already contain unplayable segments +var discardEmulationPreventionBytes = function discardEmulationPreventionBytes(bytes) { + var positions = []; + var i = 1; // Find all `Emulation Prevention Bytes` - this.playlistController_.mainSegmentLoader_.resetEverything(); - this.playlistController_.fastQualityChange_(); - } - }); - this.handleWaitingForKey_ = this.handleWaitingForKey_.bind(this); - this.player_.tech_.on('waitingforkey', this.handleWaitingForKey_); - if (!didSetupEmeOptions) { - // If EME options were not set up, we've done all we could to initialize EME. - this.playlistController_.sourceUpdater_.initializedEme(); - return; + while (i < bytes.length - 2) { + if ((0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes.subarray(i, i + 3), EMULATION_PREVENTION)) { + positions.push(i + 2); + i++; } - this.createKeySessions_(); - } - /** - * Initializes the quality levels and sets listeners to update them. - * - * @method setupQualityLevels_ - * @private - */ - setupQualityLevels_() { - const player = videojs.players[this.tech_.options_.playerId]; // if there isn't a player or there isn't a qualityLevels plugin - // or qualityLevels_ listeners have already been setup, do nothing. + i++; + } // If no Emulation Prevention Bytes were found just return the original + // array - if (!player || !player.qualityLevels || this.qualityLevels_) { - return; + + if (positions.length === 0) { + return bytes; + } // Create a new array to hold the NAL unit data + + + var newLength = bytes.length - positions.length; + var newData = new Uint8Array(newLength); + var sourceIndex = 0; + + for (i = 0; i < newLength; sourceIndex++, i++) { + if (sourceIndex === positions[0]) { + // Skip this byte + sourceIndex++; // Remove this position index + + positions.shift(); } - this.qualityLevels_ = player.qualityLevels(); - this.playlistController_.on('selectedinitialmedia', () => { - handleVhsLoadedMetadata(this.qualityLevels_, this); - }); - this.playlists.on('mediachange', () => { - handleVhsMediaChange(this.qualityLevels_, this.playlists); - }); - } - /** - * return the version - */ - static version() { - return { - '@videojs/http-streaming': version$4, - 'mux.js': version$3, - 'mpd-parser': version$2, - 'm3u8-parser': version$1, - 'aes-decrypter': version - }; + newData[i] = bytes[sourceIndex]; } - /** - * return the version - */ - version() { - return this.constructor.version(); - } - canChangeType() { - return SourceUpdater.canChangeType(); + return newData; +}; +var findNal = function findNal(bytes, dataType, types, nalLimit) { + if (nalLimit === void 0) { + nalLimit = Infinity; } - /** - * Begin playing the video. - */ - play() { - this.playlistController_.play(); - } - /** - * a wrapper around the function in PlaylistController - */ + bytes = (0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.toUint8)(bytes); + types = [].concat(types); + var i = 0; + var nalStart; + var nalsFound = 0; // keep searching until: + // we reach the end of bytes + // we reach the maximum number of nals they want to seach + // NOTE: that we disregard nalLimit when we have found the start + // of the nal we want so that we can find the end of the nal we want. - setCurrentTime(currentTime) { - this.playlistController_.setCurrentTime(currentTime); - } - /** - * a wrapper around the function in PlaylistController - */ + while (i < bytes.length && (nalsFound < nalLimit || nalStart)) { + var nalOffset = void 0; - duration() { - return this.playlistController_.duration(); - } - /** - * a wrapper around the function in PlaylistController - */ + if ((0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes.subarray(i), NAL_TYPE_ONE)) { + nalOffset = 4; + } else if ((0,_byte_helpers_js__WEBPACK_IMPORTED_MODULE_0__.bytesMatch)(bytes.subarray(i), NAL_TYPE_TWO)) { + nalOffset = 3; + } // we are unsynced, + // find the next nal unit - seekable() { - return this.playlistController_.seekable(); - } - /** - * Abort all outstanding work and cleanup. - */ - dispose() { - if (this.playbackWatcher_) { - this.playbackWatcher_.dispose(); - } - if (this.playlistController_) { - this.playlistController_.dispose(); - } - if (this.qualityLevels_) { - this.qualityLevels_.dispose(); + if (!nalOffset) { + i++; + continue; } - if (this.tech_ && this.tech_.vhs) { - delete this.tech_.vhs; + + nalsFound++; + + if (nalStart) { + return discardEmulationPreventionBytes(bytes.subarray(nalStart, i)); } - if (this.mediaSourceUrl_ && (global_window__WEBPACK_IMPORTED_MODULE_0___default().URL).revokeObjectURL) { - global_window__WEBPACK_IMPORTED_MODULE_0___default().URL.revokeObjectURL(this.mediaSourceUrl_); - this.mediaSourceUrl_ = null; + + var nalType = void 0; + + if (dataType === 'h264') { + nalType = bytes[i + nalOffset] & 0x1f; + } else if (dataType === 'h265') { + nalType = bytes[i + nalOffset] >> 1 & 0x3f; } - if (this.tech_) { - this.tech_.off('waitingforkey', this.handleWaitingForKey_); + + if (types.indexOf(nalType) !== -1) { + nalStart = i + nalOffset; + } // nal header is 1 length for h264, and 2 for h265 + + + i += nalOffset + (dataType === 'h264' ? 1 : 2); + } + + return bytes.subarray(0, 0); +}; +var findH264Nal = function findH264Nal(bytes, type, nalLimit) { + return findNal(bytes, 'h264', type, nalLimit); +}; +var findH265Nal = function findH265Nal(bytes, type, nalLimit) { + return findNal(bytes, 'h265', type, nalLimit); +}; + +/***/ }), + +/***/ "./node_modules/video.js/node_modules/@videojs/vhs-utils/es/opus-helpers.js": +/*!**********************************************************************************!*\ + !*** ./node_modules/video.js/node_modules/@videojs/vhs-utils/es/opus-helpers.js ***! + \**********************************************************************************/ +/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { + +"use strict"; +__webpack_require__.r(__webpack_exports__); +/* harmony export */ __webpack_require__.d(__webpack_exports__, { +/* harmony export */ OPUS_HEAD: () => (/* binding */ OPUS_HEAD), +/* harmony export */ parseOpusHead: () => (/* binding */ parseOpusHead), +/* harmony export */ setOpusHead: () => (/* binding */ setOpusHead) +/* harmony export */ }); +var OPUS_HEAD = new Uint8Array([// O, p, u, s +0x4f, 0x70, 0x75, 0x73, // H, e, a, d +0x48, 0x65, 0x61, 0x64]); // https://wiki.xiph.org/OggOpus +// https://vfrmaniac.fushizen.eu/contents/opus_in_isobmff.html +// https://opus-codec.org/docs/opusfile_api-0.7/structOpusHead.html + +var parseOpusHead = function parseOpusHead(bytes) { + var view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength); + var version = view.getUint8(0); // version 0, from mp4, does not use littleEndian. + + var littleEndian = version !== 0; + var config = { + version: version, + channels: view.getUint8(1), + preSkip: view.getUint16(2, littleEndian), + sampleRate: view.getUint32(4, littleEndian), + outputGain: view.getUint16(8, littleEndian), + channelMappingFamily: view.getUint8(10) + }; + + if (config.channelMappingFamily > 0 && bytes.length > 10) { + config.streamCount = view.getUint8(11); + config.twoChannelStreamCount = view.getUint8(12); + config.channelMapping = []; + + for (var c = 0; c < config.channels; c++) { + config.channelMapping.push(view.getUint8(13 + c)); } - super.dispose(); } - convertToProgramTime(time, callback) { - return getProgramTime({ - playlist: this.playlistController_.media(), - time, - callback - }); - } // the player must be playing before calling this - seekToProgramTime(programTime, callback, pauseAfterSeek = true, retryCount = 2) { - return seekToProgramTime({ - programTime, - playlist: this.playlistController_.media(), - retryCount, - pauseAfterSeek, - seekTo: this.options_.seekTo, - tech: this.options_.tech, - callback + return config; +}; +var setOpusHead = function setOpusHead(config) { + var size = config.channelMappingFamily <= 0 ? 11 : 12 + config.channels; + var view = new DataView(new ArrayBuffer(size)); + var littleEndian = config.version !== 0; + view.setUint8(0, config.version); + view.setUint8(1, config.channels); + view.setUint16(2, config.preSkip, littleEndian); + view.setUint32(4, config.sampleRate, littleEndian); + view.setUint16(8, config.outputGain, littleEndian); + view.setUint8(10, config.channelMappingFamily); + + if (config.channelMappingFamily > 0) { + view.setUint8(11, config.streamCount); + config.channelMapping.foreach(function (cm, i) { + view.setUint8(12 + i, cm); }); } - /** - * Adds the onRequest, onResponse, offRequest and offResponse functions - * to the VhsHandler xhr Object. - */ - setupXhrHooks_() { - /** - * A player function for setting an onRequest hook - * - * @param {function} callback for request modifiction - */ - this.xhr.onRequest = callback => { - addOnRequestHook(this.xhr, callback); - }; - /** - * A player function for setting an onResponse hook - * - * @param {callback} callback for response data retrieval - */ + return new Uint8Array(view.buffer); +}; - this.xhr.onResponse = callback => { - addOnResponseHook(this.xhr, callback); - }; - /** - * Deletes a player onRequest callback if it exists - * - * @param {function} callback to delete from the player set - */ +/***/ }), - this.xhr.offRequest = callback => { - removeOnRequestHook(this.xhr, callback); - }; - /** - * Deletes a player onResponse callback if it exists - * - * @param {function} callback to delete from the player set - */ +/***/ "./node_modules/video.js/node_modules/@videojs/vhs-utils/es/resolve-url.js": +/*!*********************************************************************************!*\ + !*** ./node_modules/video.js/node_modules/@videojs/vhs-utils/es/resolve-url.js ***! + \*********************************************************************************/ +/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => { - this.xhr.offResponse = callback => { - removeOnResponseHook(this.xhr, callback); - }; // Trigger an event on the player to notify the user that vhs is ready to set xhr hooks. - // This allows hooks to be set before the source is set to vhs when handleSource is called. +"use strict"; +__webpack_require__.r(__webpack_exports__); +/* harmony export */ __webpack_require__.d(__webpack_exports__, { +/* harmony export */ "default": () => (__WEBPACK_DEFAULT_EXPORT__) +/* harmony export */ }); +/* harmony import */ var url_toolkit__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! url-toolkit */ "./node_modules/url-toolkit/src/url-toolkit.js"); +/* harmony import */ var url_toolkit__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(url_toolkit__WEBPACK_IMPORTED_MODULE_0__); +/* harmony import */ var global_window__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! global/window */ "./node_modules/global/window.js"); +/* harmony import */ var global_window__WEBPACK_IMPORTED_MODULE_1___default = /*#__PURE__*/__webpack_require__.n(global_window__WEBPACK_IMPORTED_MODULE_1__); - this.player_.trigger('xhr-hooks-ready'); - } -} -/** - * The Source Handler object, which informs video.js what additional - * MIME types are supported and sets up playback. It is registered - * automatically to the appropriate tech based on the capabilities of - * the browser it is running in. It is not necessary to use or modify - * this object in normal usage. - */ -const VhsSourceHandler = { - name: 'videojs-http-streaming', - VERSION: version$4, - canHandleSource(srcObj, options = {}) { - const localOptions = merge(videojs.options, options); - return VhsSourceHandler.canPlayType(srcObj.type, localOptions); - }, - handleSource(source, tech, options = {}) { - const localOptions = merge(videojs.options, options); - tech.vhs = new VhsHandler(source, tech, localOptions); - tech.vhs.xhr = xhrFactory(); - tech.vhs.setupXhrHooks_(); - tech.vhs.src(source.src, source.type); - return tech.vhs; - }, - canPlayType(type, options) { - const simpleType = (0,_videojs_vhs_utils_es_media_types_js__WEBPACK_IMPORTED_MODULE_10__.simpleTypeFromSourceType)(type); - if (!simpleType) { - return ''; - } - const overrideNative = VhsSourceHandler.getOverrideNative(options); - const supportsTypeNatively = Vhs.supportsTypeNatively(simpleType); - const canUseMsePlayback = !supportsTypeNatively || overrideNative; - return canUseMsePlayback ? 'maybe' : ''; - }, - getOverrideNative(options = {}) { - const { - vhs = {} - } = options; - const defaultOverrideNative = !(videojs.browser.IS_ANY_SAFARI || videojs.browser.IS_IOS); - const { - overrideNative = defaultOverrideNative - } = vhs; - return overrideNative; +var DEFAULT_LOCATION = 'http://example.com'; + +var resolveUrl = function resolveUrl(baseUrl, relativeUrl) { + // return early if we don't need to resolve + if (/^[a-z]+:/i.test(relativeUrl)) { + return relativeUrl; + } // if baseUrl is a data URI, ignore it and resolve everything relative to window.location + + + if (/^data:/.test(baseUrl)) { + baseUrl = (global_window__WEBPACK_IMPORTED_MODULE_1___default().location) && (global_window__WEBPACK_IMPORTED_MODULE_1___default().location).href || ''; + } // IE11 supports URL but not the URL constructor + // feature detect the behavior we want + + + var nativeURL = typeof (global_window__WEBPACK_IMPORTED_MODULE_1___default().URL) === 'function'; + var protocolLess = /^\/\//.test(baseUrl); // remove location if window.location isn't available (i.e. we're in node) + // and if baseUrl isn't an absolute url + + var removeLocation = !(global_window__WEBPACK_IMPORTED_MODULE_1___default().location) && !/\/\//i.test(baseUrl); // if the base URL is relative then combine with the current location + + if (nativeURL) { + baseUrl = new (global_window__WEBPACK_IMPORTED_MODULE_1___default().URL)(baseUrl, (global_window__WEBPACK_IMPORTED_MODULE_1___default().location) || DEFAULT_LOCATION); + } else if (!/\/\//i.test(baseUrl)) { + baseUrl = url_toolkit__WEBPACK_IMPORTED_MODULE_0___default().buildAbsoluteURL((global_window__WEBPACK_IMPORTED_MODULE_1___default().location) && (global_window__WEBPACK_IMPORTED_MODULE_1___default().location).href || '', baseUrl); } -}; -/** - * Check to see if the native MediaSource object exists and supports - * an MP4 container with both H.264 video and AAC-LC audio. - * - * @return {boolean} if native media sources are supported - */ -const supportsNativeMediaSources = () => { - return (0,_videojs_vhs_utils_es_codecs_js__WEBPACK_IMPORTED_MODULE_9__.browserSupportsCodec)('avc1.4d400d,mp4a.40.2'); -}; // register source handlers with the appropriate techs + if (nativeURL) { + var newUrl = new URL(relativeUrl, baseUrl); // if we're a protocol-less url, remove the protocol + // and if we're location-less, remove the location + // otherwise, return the url unmodified -if (supportsNativeMediaSources()) { - videojs.getTech('Html5').registerSourceHandler(VhsSourceHandler, 0); -} -videojs.VhsHandler = VhsHandler; -videojs.VhsSourceHandler = VhsSourceHandler; -videojs.Vhs = Vhs; -if (!videojs.use) { - videojs.registerComponent('Vhs', Vhs); -} -videojs.options.vhs = videojs.options.vhs || {}; -if (!videojs.getPlugin || !videojs.getPlugin('reloadSourceOnError')) { - videojs.registerPlugin('reloadSourceOnError', reloadSourceOnError); -} + if (removeLocation) { + return newUrl.href.slice(DEFAULT_LOCATION.length); + } else if (protocolLess) { + return newUrl.href.slice(newUrl.protocol.length); + } + return newUrl.href; + } + return url_toolkit__WEBPACK_IMPORTED_MODULE_0___default().buildAbsoluteURL(baseUrl, relativeUrl); +}; +/* harmony default export */ const __WEBPACK_DEFAULT_EXPORT__ = (resolveUrl); /***/ }), diff --git a/app/js/main.js.map b/app/js/main.js.map index 8ea1e6fa6e748c39e7d97e0d3cdd815a10a94ef7..adf63c67a42f804204f1b4bc1d2c53583a6b91cb 100644 --- a/app/js/main.js.map +++ b/app/js/main.js.map @@ -1 +1 @@ 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e=this.currentPointers.findIndex((e=>e.id===t.id));e<0||(this.currentPointers[e]=t)}this._moveCallback(e,this.currentPointers.slice(),t)},this._triggerPointerEnd=(t,e)=>{const i=this.currentPointers.findIndex((e=>e.id===t.id));return!(i<0)&&(this.currentPointers.splice(i,1),this.startPointers.splice(i,1),this._endCallback(t,e),!0)},this._pointerEnd=t=>{t.buttons>0&&0!==t.button||this._triggerPointerEnd(new n(t),t)&&(window.removeEventListener(\"mousemove\",this._move,{passive:!1}),window.removeEventListener(\"mouseup\",this._pointerEnd,{passive:!1}))},this._touchEnd=t=>{for(const e of Array.from(t.changedTouches||[]))this._triggerPointerEnd(new n(e),t)},this._startCallback=e,this._moveCallback=i,this._endCallback=s,this._element.addEventListener(\"mousedown\",this._pointerStart,{passive:!1}),this._element.addEventListener(\"touchstart\",this._touchStart,{passive:!1}),this._element.addEventListener(\"touchmove\",this._move,{passive:!1}),this._element.addEventListener(\"touchend\",this._touchEnd),this._element.addEventListener(\"touchcancel\",this._touchEnd)}stop(){this._element.removeEventListener(\"mousedown\",this._pointerStart,{passive:!1}),this._element.removeEventListener(\"touchstart\",this._touchStart,{passive:!1}),this._element.removeEventListener(\"touchmove\",this._move,{passive:!1}),this._element.removeEventListener(\"touchend\",this._touchEnd),this._element.removeEventListener(\"touchcancel\",this._touchEnd),window.removeEventListener(\"mousemove\",this._move),window.removeEventListener(\"mouseup\",this._pointerEnd)}_triggerPointerStart(t,e){return!!this._startCallback(t,e)&&(this.currentPointers.push(t),this.startPointers.push(t),!0)}}class l{constructor(t={}){this.options=e(!0,{},t),this.plugins=[],this.events={};for(const t of[\"on\",\"once\"])for(const e of Object.entries(this.options[t]||{}))this[t](...e)}option(t,e,...i){t=String(t);let s=(o=t,n=this.options,o.split(\".\").reduce((function(t,e){return t&&t[e]}),n));var o,n;return\"function\"==typeof s&&(s=s.call(this,this,...i)),void 0===s?e:s}localize(t,e=[]){return t=(t=String(t).replace(/\\{\\{(\\w+).?(\\w+)?\\}\\}/g,((t,i,s)=>{let o=\"\";s?o=this.option(`${i[0]+i.toLowerCase().substring(1)}.l10n.${s}`):i&&(o=this.option(`l10n.${i}`)),o||(o=t);for(let t=0;te))}on(e,i){if(t(e)){for(const t of Object.entries(e))this.on(...t);return this}return String(e).split(\" \").forEach((t=>{const e=this.events[t]=this.events[t]||[];-1==e.indexOf(i)&&e.push(i)})),this}once(e,i){if(t(e)){for(const t of Object.entries(e))this.once(...t);return this}return String(e).split(\" \").forEach((t=>{const e=(...s)=>{this.off(t,e),i.call(this,this,...s)};e._=i,this.on(t,e)})),this}off(e,i){if(!t(e))return e.split(\" \").forEach((t=>{const e=this.events[t];if(!e||!e.length)return this;let s=-1;for(let t=0,o=e.length;t1||Math.abs(e.left-this.dragStart.rect.left)>1))return t.preventDefault(),void t.stopPropagation();!1!==this.trigger(\"click\",t)&&this.option(\"zoom\")&&\"toggleZoom\"===this.option(\"click\")&&(t.preventDefault(),t.stopPropagation(),this.zoomWithClick(t))}onWheel(t){!1!==this.trigger(\"wheel\",t)&&this.option(\"zoom\")&&this.option(\"wheel\")&&this.zoomWithWheel(t)}zoomWithWheel(t){void 0===this.changedDelta&&(this.changedDelta=0);const e=Math.max(-1,Math.min(1,-t.deltaY||-t.deltaX||t.wheelDelta||-t.detail)),i=this.content.scale;let s=i*(100+e*this.option(\"wheelFactor\"))/100;if(e<0&&Math.abs(i-this.option(\"minScale\"))<.01||e>0&&Math.abs(i-this.option(\"maxScale\"))<.01?(this.changedDelta+=Math.abs(e),s=i):(this.changedDelta=0,s=Math.max(Math.min(s,this.option(\"maxScale\")),this.option(\"minScale\"))),this.changedDelta>this.option(\"wheelLimit\"))return;if(t.preventDefault(),s===i)return;const o=this.$content.getBoundingClientRect(),n=t.clientX-o.left,a=t.clientY-o.top;this.zoomTo(s,{x:n,y:a})}zoomWithClick(t){const e=this.$content.getClientRects()[0],i=t.clientX-e.left,s=t.clientY-e.top;this.toggleZoom({x:i,y:s})}attachEvents(){this.$content.addEventListener(\"load\",this.onLoad),this.$container.addEventListener(\"wheel\",this.onWheel,{passive:!1}),this.$container.addEventListener(\"click\",this.onClick,{passive:!1}),this.initObserver();const t=new h(this.$container,{start:(e,i)=>{if(!this.option(\"touch\"))return!1;if(this.velocity.scale<0)return!1;const o=i.composedPath()[0];if(!t.currentPointers.length){if(-1!==[\"BUTTON\",\"TEXTAREA\",\"OPTION\",\"INPUT\",\"SELECT\",\"VIDEO\"].indexOf(o.nodeName))return!1;if(this.option(\"textSelection\")&&((t,e,i)=>{const s=t.childNodes,o=document.createRange();for(let t=0;t=a.left&&i>=a.top&&e<=a.right&&i<=a.bottom)return n}return!1})(o,e.clientX,e.clientY))return!1}return!s(o)&&(!1!==this.trigger(\"touchStart\",i)&&(\"mousedown\"===i.type&&i.preventDefault(),this.state=\"pointerdown\",this.resetDragPosition(),this.dragPosition.midPoint=null,this.dragPosition.time=Date.now(),!0))},move:(e,i,s)=>{if(\"pointerdown\"!==this.state)return;if(!1===this.trigger(\"touchMove\",s))return void s.preventDefault();if(i.length<2&&!0===this.option(\"panOnlyZoomed\")&&this.content.width<=this.viewport.width&&this.content.height<=this.viewport.height&&this.transform.scale<=this.option(\"baseScale\"))return;if(i.length>1&&(!this.option(\"zoom\")||!1===this.option(\"pinchToZoom\")))return;const o=r(e[0],e[1]),n=r(i[0],i[1]),h=n.clientX-o.clientX,l=n.clientY-o.clientY,c=a(e[0],e[1]),d=a(i[0],i[1]),u=c&&d?d/c:1;this.dragOffset.x+=h,this.dragOffset.y+=l,this.dragOffset.scale*=u,this.dragOffset.time=Date.now()-this.dragPosition.time;const f=1===this.dragStart.scale&&this.option(\"lockAxis\");if(f&&!this.lockAxis){if(Math.abs(this.dragOffset.x)<6&&Math.abs(this.dragOffset.y)<6)return void s.preventDefault();const t=Math.abs(180*Math.atan2(this.dragOffset.y,this.dragOffset.x)/Math.PI);this.lockAxis=t>45&&t<135?\"y\":\"x\"}if(\"xy\"===f||\"y\"!==this.lockAxis){if(s.preventDefault(),s.stopPropagation(),s.stopImmediatePropagation(),this.lockAxis&&(this.dragOffset[\"x\"===this.lockAxis?\"y\":\"x\"]=0),this.$container.classList.add(this.option(\"draggingClass\")),this.transform.scale===this.option(\"baseScale\")&&\"y\"===this.lockAxis||(this.dragPosition.x=this.dragStart.x+this.dragOffset.x),this.transform.scale===this.option(\"baseScale\")&&\"x\"===this.lockAxis||(this.dragPosition.y=this.dragStart.y+this.dragOffset.y),this.dragPosition.scale=this.dragStart.scale*this.dragOffset.scale,i.length>1){const e=r(t.startPointers[0],t.startPointers[1]),i=e.clientX-this.dragStart.rect.x,s=e.clientY-this.dragStart.rect.y,{deltaX:o,deltaY:a}=this.getZoomDelta(this.content.scale*this.dragOffset.scale,i,s);this.dragPosition.x-=o,this.dragPosition.y-=a,this.dragPosition.midPoint=n}else this.setDragResistance();this.transform={x:this.dragPosition.x,y:this.dragPosition.y,scale:this.dragPosition.scale},this.startAnimation()}},end:(e,i)=>{if(\"pointerdown\"!==this.state)return;if(this._dragOffset={...this.dragOffset},t.currentPointers.length)return void this.resetDragPosition();if(this.state=\"decel\",this.friction=this.option(\"decelFriction\"),this.recalculateTransform(),this.$container.classList.remove(this.option(\"draggingClass\")),!1===this.trigger(\"touchEnd\",i))return;if(\"decel\"!==this.state)return;const s=this.option(\"minScale\");if(this.transform.scale.01){const t=this.dragPosition.midPoint||e,i=this.$content.getClientRects()[0];this.zoomTo(o,{friction:.64,x:t.clientX-i.left,y:t.clientY-i.top})}else;}});this.pointerTracker=t}initObserver(){this.resizeObserver||(this.resizeObserver=new o((()=>{this.updateTimer||(this.updateTimer=setTimeout((()=>{const t=this.$container.getBoundingClientRect();t.width&&t.height?((Math.abs(t.width-this.container.width)>1||Math.abs(t.height-this.container.height)>1)&&(this.isAnimating()&&this.endAnimation(!0),this.updateMetrics(),this.panTo({x:this.content.x,y:this.content.y,scale:this.option(\"baseScale\"),friction:0})),this.updateTimer=null):this.updateTimer=null}),this.updateRate))})),this.resizeObserver.observe(this.$container))}resetDragPosition(){this.lockAxis=null,this.friction=this.option(\"friction\"),this.velocity={x:0,y:0,scale:0};const{x:t,y:e,scale:i}=this.content;this.dragStart={rect:this.$content.getBoundingClientRect(),x:t,y:e,scale:i},this.dragPosition={...this.dragPosition,x:t,y:e,scale:i},this.dragOffset={x:0,y:0,scale:1,time:0}}updateMetrics(t){!0!==t&&this.trigger(\"beforeUpdate\");const e=this.$container,s=this.$content,o=this.$viewport,n=s instanceof HTMLImageElement,a=this.option(\"zoom\"),r=this.option(\"resizeParent\",a);let h=this.option(\"width\"),l=this.option(\"height\"),c=h||(d=s,Math.max(parseFloat(d.naturalWidth||0),parseFloat(d.width&&d.width.baseVal&&d.width.baseVal.value||0),parseFloat(d.offsetWidth||0),parseFloat(d.scrollWidth||0)));var d;let u=l||(t=>Math.max(parseFloat(t.naturalHeight||0),parseFloat(t.height&&t.height.baseVal&&t.height.baseVal.value||0),parseFloat(t.offsetHeight||0),parseFloat(t.scrollHeight||0)))(s);Object.assign(s.style,{width:h?`${h}px`:\"\",height:l?`${l}px`:\"\",maxWidth:\"\",maxHeight:\"\"}),r&&Object.assign(o.style,{width:\"\",height:\"\"});const f=this.option(\"ratio\");c=i(c*f),u=i(u*f),h=c,l=u;const g=s.getBoundingClientRect(),p=o.getBoundingClientRect(),m=o==e?p:e.getBoundingClientRect();let y=Math.max(o.offsetWidth,i(p.width)),v=Math.max(o.offsetHeight,i(p.height)),b=window.getComputedStyle(o);if(y-=parseFloat(b.paddingLeft)+parseFloat(b.paddingRight),v-=parseFloat(b.paddingTop)+parseFloat(b.paddingBottom),this.viewport.width=y,this.viewport.height=v,a){if(Math.abs(c-g.width)>.1||Math.abs(u-g.height)>.1){const t=((t,e,i,s)=>{const o=Math.min(i/t||0,s/e);return{width:t*o||0,height:e*o||0}})(c,u,Math.min(c,g.width),Math.min(u,g.height));h=i(t.width),l=i(t.height)}Object.assign(s.style,{width:`${h}px`,height:`${l}px`,transform:\"\"})}if(r&&(Object.assign(o.style,{width:`${h}px`,height:`${l}px`}),this.viewport={...this.viewport,width:h,height:l}),n&&a&&\"function\"!=typeof this.options.maxScale){const t=this.option(\"maxScale\");this.options.maxScale=function(){return this.content.origWidth>0&&this.content.fitWidth>0?this.content.origWidth/this.content.fitWidth:t}}this.content={...this.content,origWidth:c,origHeight:u,fitWidth:h,fitHeight:l,width:h,height:l,scale:1,isZoomable:a},this.container={width:m.width,height:m.height},!0!==t&&this.trigger(\"afterUpdate\")}zoomIn(t){this.zoomTo(this.content.scale+(t||this.option(\"step\")))}zoomOut(t){this.zoomTo(this.content.scale-(t||this.option(\"step\")))}toggleZoom(t={}){const e=this.option(\"maxScale\"),i=this.option(\"baseScale\"),s=this.content.scale>i+.5*(e-i)?i:e;this.zoomTo(s,t)}zoomTo(t=this.option(\"baseScale\"),{x:e=null,y:s=null}={}){t=Math.max(Math.min(t,this.option(\"maxScale\")),this.option(\"minScale\"));const o=i(this.content.scale/(this.content.width/this.content.fitWidth),1e7);null===e&&(e=this.content.width*o*.5),null===s&&(s=this.content.height*o*.5);const{deltaX:n,deltaY:a}=this.getZoomDelta(t,e,s);e=this.content.x-n,s=this.content.y-a,this.panTo({x:e,y:s,scale:t,friction:this.option(\"zoomFriction\")})}getZoomDelta(t,e=0,i=0){const s=this.content.fitWidth*this.content.scale,o=this.content.fitHeight*this.content.scale,n=e>0&&s?e/s:0,a=i>0&&o?i/o:0;return{deltaX:(this.content.fitWidth*t-s)*n,deltaY:(this.content.fitHeight*t-o)*a}}panTo({x:t=this.content.x,y:e=this.content.y,scale:i,friction:s=this.option(\"friction\"),ignoreBounds:o=!1}={}){if(i=i||this.content.scale||1,!o){const{boundX:s,boundY:o}=this.getBounds(i);s&&(t=Math.max(Math.min(t,s.to),s.from)),o&&(e=Math.max(Math.min(e,o.to),o.from))}this.friction=s,this.transform={...this.transform,x:t,y:e,scale:i},s?(this.state=\"panning\",this.velocity={x:(1/this.friction-1)*(t-this.content.x),y:(1/this.friction-1)*(e-this.content.y),scale:(1/this.friction-1)*(i-this.content.scale)},this.startAnimation()):this.endAnimation()}startAnimation(){this.rAF?cancelAnimationFrame(this.rAF):this.trigger(\"startAnimation\"),this.rAF=requestAnimationFrame((()=>this.animate()))}animate(){if(this.setEdgeForce(),this.setDragForce(),this.velocity.x*=this.friction,this.velocity.y*=this.friction,this.velocity.scale*=this.friction,this.content.x+=this.velocity.x,this.content.y+=this.velocity.y,this.content.scale+=this.velocity.scale,this.isAnimating())this.setTransform();else if(\"pointerdown\"!==this.state)return void this.endAnimation();this.rAF=requestAnimationFrame((()=>this.animate()))}getBounds(t){let e=this.boundX,s=this.boundY;if(void 0!==e&&void 0!==s)return{boundX:e,boundY:s};e={from:0,to:0},s={from:0,to:0},t=t||this.transform.scale;const o=this.content.fitWidth*t,n=this.content.fitHeight*t,a=this.viewport.width,r=this.viewport.height;if(oe.to),i&&(n=this.content.yi.to),s||o){let i=((s?e.from:e.to)-this.content.x)*t;const o=this.content.x+(this.velocity.x+i)/this.friction;o>=e.from&&o<=e.to&&(i+=this.velocity.x),this.velocity.x=i,this.recalculateTransform()}if(n||a){let e=((n?i.from:i.to)-this.content.y)*t;const s=this.content.y+(e+this.velocity.y)/this.friction;s>=i.from&&s<=i.to&&(e+=this.velocity.y),this.velocity.y=e,this.recalculateTransform()}}setDragResistance(){if(\"pointerdown\"!==this.state)return;const{boundX:t,boundY:e}=this.getBounds(this.dragPosition.scale);let i,s,o,n;if(t&&(i=this.dragPosition.xt.to),e&&(o=this.dragPosition.ye.to),(i||s)&&(!i||!s)){const e=i?t.from:t.to,s=e-this.dragPosition.x;this.dragPosition.x=e-.3*s}if((o||n)&&(!o||!n)){const t=o?e.from:e.to,i=t-this.dragPosition.y;this.dragPosition.y=t-.3*i}}setDragForce(){\"pointerdown\"===this.state&&(this.velocity.x=this.dragPosition.x-this.content.x,this.velocity.y=this.dragPosition.y-this.content.y,this.velocity.scale=this.dragPosition.scale-this.content.scale)}recalculateTransform(){this.transform.x=this.content.x+this.velocity.x/(1/this.friction-1),this.transform.y=this.content.y+this.velocity.y/(1/this.friction-1),this.transform.scale=this.content.scale+this.velocity.scale/(1/this.friction-1)}isAnimating(){return!(!this.friction||!(Math.abs(this.velocity.x)>.05||Math.abs(this.velocity.y)>.05||Math.abs(this.velocity.scale)>.05))}setTransform(t){let e,s,o;if(t?(e=i(this.transform.x),s=i(this.transform.y),o=this.transform.scale,this.content={...this.content,x:e,y:s,scale:o}):(e=i(this.content.x),s=i(this.content.y),o=this.content.scale/(this.content.width/this.content.fitWidth),this.content={...this.content,x:e,y:s}),this.trigger(\"beforeTransform\"),e=i(this.content.x),s=i(this.content.y),t&&this.option(\"zoom\")){let t,n;t=i(this.content.fitWidth*o),n=i(this.content.fitHeight*o),this.content.width=t,this.content.height=n,this.transform={...this.transform,width:t,height:n,scale:o},Object.assign(this.$content.style,{width:`${t}px`,height:`${n}px`,maxWidth:\"none\",maxHeight:\"none\",transform:`translate3d(${e}px, ${s}px, 0) scale(1)`})}else this.$content.style.transform=`translate3d(${e}px, ${s}px, 0) scale(${o})`;this.trigger(\"afterTransform\")}endAnimation(t){cancelAnimationFrame(this.rAF),this.rAF=null,this.velocity={x:0,y:0,scale:0},this.setTransform(!0),this.state=\"ready\",this.handleCursor(),!0!==t&&this.trigger(\"endAnimation\")}handleCursor(){const t=this.option(\"draggableClass\");t&&this.option(\"touch\")&&(1==this.option(\"panOnlyZoomed\")&&this.content.width<=this.viewport.width&&this.content.height<=this.viewport.height&&this.transform.scale<=this.option(\"baseScale\")?this.$container.classList.remove(t):this.$container.classList.add(t))}detachEvents(){this.$content.removeEventListener(\"load\",this.onLoad),this.$container.removeEventListener(\"wheel\",this.onWheel,{passive:!1}),this.$container.removeEventListener(\"click\",this.onClick,{passive:!1}),this.pointerTracker&&(this.pointerTracker.stop(),this.pointerTracker=null),this.resizeObserver&&(this.resizeObserver.disconnect(),this.resizeObserver=null)}destroy(){\"destroy\"!==this.state&&(this.state=\"destroy\",clearTimeout(this.updateTimer),this.updateTimer=null,cancelAnimationFrame(this.rAF),this.rAF=null,this.detachEvents(),this.detachPlugins(),this.resetDragPosition())}}d.version=\"4.0.31\",d.Plugins={};const u=(t,e)=>{let i=0;return function(...s){const o=(new Date).getTime();if(!(o-i{e.preventDefault(),e.stopPropagation(),this.carousel[\"slide\"+(\"next\"===t?\"Next\":\"Prev\")]()})),e}build(){this.$container||(this.$container=document.createElement(\"div\"),this.$container.classList.add(...this.option(\"classNames.main\").split(\" \")),this.carousel.$container.appendChild(this.$container)),this.$next||(this.$next=this.createButton(\"next\"),this.$container.appendChild(this.$next)),this.$prev||(this.$prev=this.createButton(\"prev\"),this.$container.appendChild(this.$prev))}onRefresh(){const t=this.carousel.pages.length;t<=1||t>1&&this.carousel.elemDimWidth=t-1&&this.$next.setAttribute(\"disabled\",\"\")))}cleanup(){this.$prev&&this.$prev.remove(),this.$prev=null,this.$next&&this.$next.remove(),this.$next=null,this.$container&&this.$container.remove(),this.$container=null}attach(){this.carousel.on(\"refresh change\",this.onRefresh)}detach(){this.carousel.off(\"refresh change\",this.onRefresh),this.cleanup()}}f.defaults={prevTpl:'',nextTpl:'',classNames:{main:\"carousel__nav\",button:\"carousel__button\",next:\"is-next\",prev:\"is-prev\"}};class g{constructor(t){this.carousel=t,this.selectedIndex=null,this.friction=0,this.onNavReady=this.onNavReady.bind(this),this.onNavClick=this.onNavClick.bind(this),this.onNavCreateSlide=this.onNavCreateSlide.bind(this),this.onTargetChange=this.onTargetChange.bind(this)}addAsTargetFor(t){this.target=this.carousel,this.nav=t,this.attachEvents()}addAsNavFor(t){this.target=t,this.nav=this.carousel,this.attachEvents()}attachEvents(){this.nav.options.initialSlide=this.target.options.initialPage,this.nav.on(\"ready\",this.onNavReady),this.nav.on(\"createSlide\",this.onNavCreateSlide),this.nav.on(\"Panzoom.click\",this.onNavClick),this.target.on(\"change\",this.onTargetChange),this.target.on(\"Panzoom.afterUpdate\",this.onTargetChange)}onNavReady(){this.onTargetChange(!0)}onNavClick(t,e,i){const s=i.target.closest(\".carousel__slide\");if(!s)return;i.stopPropagation();const o=parseInt(s.dataset.index,10),n=this.target.findPageForSlide(o);this.target.page!==n&&this.target.slideTo(n,{friction:this.friction}),this.markSelectedSlide(o)}onNavCreateSlide(t,e){e.index===this.selectedIndex&&this.markSelectedSlide(e.index)}onTargetChange(){const t=this.target.pages[this.target.page].indexes[0],e=this.nav.findPageForSlide(t);this.nav.slideTo(e),this.markSelectedSlide(t)}markSelectedSlide(t){this.selectedIndex=t,[...this.nav.slides].filter((t=>t.$el&&t.$el.classList.remove(\"is-nav-selected\")));const e=this.nav.slides[t];e&&e.$el&&e.$el.classList.add(\"is-nav-selected\")}attach(t){const e=t.options.Sync;(e.target||e.nav)&&(e.target?this.addAsNavFor(e.target):e.nav&&this.addAsTargetFor(e.nav),this.friction=e.friction)}detach(){this.nav&&(this.nav.off(\"ready\",this.onNavReady),this.nav.off(\"Panzoom.click\",this.onNavClick),this.nav.off(\"createSlide\",this.onNavCreateSlide)),this.target&&(this.target.off(\"Panzoom.afterUpdate\",this.onTargetChange),this.target.off(\"change\",this.onTargetChange))}}g.defaults={friction:.92};const p={Navigation:f,Dots:class{constructor(t){this.carousel=t,this.$list=null,this.events={change:this.onChange.bind(this),refresh:this.onRefresh.bind(this)}}buildList(){if(this.carousel.pages.length{if(!(\"page\"in t.target.dataset))return;t.preventDefault(),t.stopPropagation();const e=parseInt(t.target.dataset.page,10),i=this.carousel;e!==i.page&&(i.pages.length<3&&i.option(\"infinite\")?i[0==e?\"slidePrev\":\"slideNext\"]():i.slideTo(e))})),this.$list=t,this.carousel.$container.appendChild(t),this.carousel.$container.classList.add(\"has-dots\"),t}removeList(){this.$list&&(this.$list.parentNode.removeChild(this.$list),this.$list=null),this.carousel.$container.classList.remove(\"has-dots\")}rebuildDots(){let t=this.$list;const e=!!t,i=this.carousel.pages.length;if(i<2)return void(e&&this.removeList());e||(t=this.buildList());const s=this.$list.children.length;if(s>i)for(let t=i;t{const i=t.code;let s;\"Enter\"===i||\"NumpadEnter\"===i?s=e:\"ArrowRight\"===i?s=e.nextSibling:\"ArrowLeft\"===i&&(s=e.previousSibling),s&&s.click()})),this.$list.appendChild(e)}this.setActiveDot()}}setActiveDot(){if(!this.$list)return;this.$list.childNodes.forEach((t=>{t.classList.remove(\"is-selected\")}));const t=this.$list.childNodes[this.carousel.page];t&&t.classList.add(\"is-selected\")}onChange(){this.setActiveDot()}onRefresh(){this.rebuildDots()}attach(){this.carousel.on(this.events)}detach(){this.removeList(),this.carousel.off(this.events),this.carousel=null}},Sync:g};const m={slides:[],preload:0,slidesPerPage:\"auto\",initialPage:null,initialSlide:null,friction:.92,center:!0,infinite:!0,fill:!0,dragFree:!1,prefix:\"\",classNames:{viewport:\"carousel__viewport\",track:\"carousel__track\",slide:\"carousel__slide\",slideSelected:\"is-selected\"},l10n:{NEXT:\"Next slide\",PREV:\"Previous slide\",GOTO:\"Go to slide #%d\"}};class y extends l{constructor(t,i={}){if(super(i=e(!0,{},m,i)),this.state=\"init\",this.$container=t,!(this.$container instanceof HTMLElement))throw new Error(\"No root element provided\");this.slideNext=u(this.slideNext.bind(this),250),this.slidePrev=u(this.slidePrev.bind(this),250),this.init(),t.__Carousel=this}init(){this.pages=[],this.page=this.pageIndex=null,this.prevPage=this.prevPageIndex=null,this.attachPlugins(y.Plugins),this.trigger(\"init\"),this.initLayout(),this.initSlides(),this.updateMetrics(),this.$track&&this.pages.length&&(this.$track.style.transform=`translate3d(${-1*this.pages[this.page].left}px, 0px, 0) scale(1)`),this.manageSlideVisiblity(),this.initPanzoom(),this.state=\"ready\",this.trigger(\"ready\")}initLayout(){const t=this.option(\"prefix\"),e=this.option(\"classNames\");this.$viewport=this.option(\"viewport\")||this.$container.querySelector(`.${t}${e.viewport}`),this.$viewport||(this.$viewport=document.createElement(\"div\"),this.$viewport.classList.add(...(t+e.viewport).split(\" \")),this.$viewport.append(...this.$container.childNodes),this.$container.appendChild(this.$viewport)),this.$track=this.option(\"track\")||this.$container.querySelector(`.${t}${e.track}`),this.$track||(this.$track=document.createElement(\"div\"),this.$track.classList.add(...(t+e.track).split(\" \")),this.$track.append(...this.$viewport.childNodes),this.$viewport.appendChild(this.$track))}initSlides(){this.slides=[];this.$viewport.querySelectorAll(`.${this.option(\"prefix\")}${this.option(\"classNames.slide\")}`).forEach((t=>{const e={$el:t,isDom:!0};this.slides.push(e),this.trigger(\"createSlide\",e,this.slides.length)})),Array.isArray(this.options.slides)&&(this.slides=e(!0,[...this.slides],this.options.slides))}updateMetrics(){let t,e=0,s=[];this.slides.forEach(((i,o)=>{const n=i.$el,a=i.isDom||!t?this.getSlideMetrics(n):t;i.index=o,i.width=a,i.left=e,t=a,e+=a,s.push(o)}));let o=Math.max(this.$track.offsetWidth,i(this.$track.getBoundingClientRect().width)),n=getComputedStyle(this.$track);o-=parseFloat(n.paddingLeft)+parseFloat(n.paddingRight),this.contentWidth=e,this.viewportWidth=o;const a=[],r=this.option(\"slidesPerPage\");if(Number.isInteger(r)&&e>o)for(let t=0;to)&&(a.push({indexes:[],slides:[]}),t=a.length-1,e=0),e+=s.width,a[t].indexes.push(i),a[t].slides.push(s)}}const h=this.option(\"center\"),l=this.option(\"fill\");a.forEach(((t,i)=>{t.index=i,t.width=t.slides.reduce(((t,e)=>t+e.width),0),t.left=t.slides[0].left,h&&(t.left+=.5*(o-t.width)*-1),l&&!this.option(\"infiniteX\",this.option(\"infinite\"))&&e>o&&(t.left=Math.max(t.left,0),t.left=Math.min(t.left,e-o))}));const c=[];let d;a.forEach((t=>{const e={...t};d&&e.left===d.left?(d.width+=e.width,d.slides=[...d.slides,...e.slides],d.indexes=[...d.indexes,...e.indexes]):(e.index=c.length,d=e,c.push(e))})),this.pages=c;let u=this.page;if(null===u){const t=this.option(\"initialSlide\");u=null!==t?this.findPageForSlide(t):parseInt(this.option(\"initialPage\",0),10)||0,c[u]||(u=c.length&&u>c.length?c[c.length-1].index:0),this.page=u,this.pageIndex=u}this.updatePanzoom(),this.trigger(\"refresh\")}getSlideMetrics(t){if(!t){const e=this.slides[0];(t=document.createElement(\"div\")).dataset.isTestEl=1,t.style.visibility=\"hidden\",t.classList.add(...(this.option(\"prefix\")+this.option(\"classNames.slide\")).split(\" \")),e.customClass&&t.classList.add(...e.customClass.split(\" \")),this.$track.prepend(t)}let e=Math.max(t.offsetWidth,i(t.getBoundingClientRect().width));const s=t.currentStyle||window.getComputedStyle(t);return e=e+(parseFloat(s.marginLeft)||0)+(parseFloat(s.marginRight)||0),t.dataset.isTestEl&&t.remove(),e}findPageForSlide(t){t=parseInt(t,10)||0;const e=this.pages.find((e=>e.indexes.indexOf(t)>-1));return e?e.index:null}slideNext(){this.slideTo(this.pageIndex+1)}slidePrev(){this.slideTo(this.pageIndex-1)}slideTo(t,e={}){const{x:i=-1*this.setPage(t,!0),y:s=0,friction:o=this.option(\"friction\")}=e;this.Panzoom.content.x===i&&!this.Panzoom.velocity.x&&o||(this.Panzoom.panTo({x:i,y:s,friction:o,ignoreBounds:!0}),\"ready\"===this.state&&\"ready\"===this.Panzoom.state&&this.trigger(\"settle\"))}initPanzoom(){this.Panzoom&&this.Panzoom.destroy();const t=e(!0,{},{content:this.$track,wrapInner:!1,resizeParent:!1,zoom:!1,click:!1,lockAxis:\"x\",x:this.pages.length?-1*this.pages[this.page].left:0,centerOnStart:!1,textSelection:()=>this.option(\"textSelection\",!1),panOnlyZoomed:function(){return this.content.width<=this.viewport.width}},this.option(\"Panzoom\"));this.Panzoom=new d(this.$container,t),this.Panzoom.on({\"*\":(t,...e)=>this.trigger(`Panzoom.${t}`,...e),afterUpdate:()=>{this.updatePage()},beforeTransform:this.onBeforeTransform.bind(this),touchEnd:this.onTouchEnd.bind(this),endAnimation:()=>{this.trigger(\"settle\")}}),this.updateMetrics(),this.manageSlideVisiblity()}updatePanzoom(){this.Panzoom&&(this.Panzoom.content={...this.Panzoom.content,fitWidth:this.contentWidth,origWidth:this.contentWidth,width:this.contentWidth},this.pages.length>1&&this.option(\"infiniteX\",this.option(\"infinite\"))?this.Panzoom.boundX=null:this.pages.length&&(this.Panzoom.boundX={from:-1*this.pages[this.pages.length-1].left,to:-1*this.pages[0].left}),this.option(\"infiniteY\",this.option(\"infinite\"))?this.Panzoom.boundY=null:this.Panzoom.boundY={from:0,to:0},this.Panzoom.handleCursor())}manageSlideVisiblity(){const t=this.contentWidth,e=this.viewportWidth;let i=this.Panzoom?-1*this.Panzoom.content.x:this.pages.length?this.pages[this.page].left:0;const s=this.option(\"preload\"),o=this.option(\"infiniteX\",this.option(\"infinite\")),n=parseFloat(getComputedStyle(this.$viewport,null).getPropertyValue(\"padding-left\")),a=parseFloat(getComputedStyle(this.$viewport,null).getPropertyValue(\"padding-right\"));this.slides.forEach((r=>{let h,l,c=0;h=i-n,l=i+e+a,h-=s*(e+n+a),l+=s*(e+n+a);const d=r.left+r.width>h&&r.lefth&&r.lefth&&r.lefti&&r.left<=i+e+a&&(c=0)):this.removeSlideEl(r),r.hasDiff=c}));let r=0,h=0;this.slides.forEach(((e,i)=>{let s=0;e.$el?(i!==r||e.hasDiff?s=h+e.hasDiff*t:h=0,e.$el.style.left=Math.abs(s)>.1?`${h+e.hasDiff*t}px`:\"\",r++):h+=e.width})),this.markSelectedSlides()}createSlideEl(t){if(!t)return;if(t.$el){let e=t.$el.dataset.index;if(!e||parseInt(e,10)!==t.index){let e;t.$el.dataset.index=t.index,t.$el.querySelectorAll(\"[data-lazy-srcset]\").forEach((t=>{t.srcset=t.dataset.lazySrcset})),t.$el.querySelectorAll(\"[data-lazy-src]\").forEach((t=>{let e=t.dataset.lazySrc;t instanceof HTMLImageElement?t.src=e:t.style.backgroundImage=`url('${e}')`})),(e=t.$el.dataset.lazySrc)&&(t.$el.style.backgroundImage=`url('${e}')`),t.state=\"ready\"}return}const e=document.createElement(\"div\");e.dataset.index=t.index,e.classList.add(...(this.option(\"prefix\")+this.option(\"classNames.slide\")).split(\" \")),t.customClass&&e.classList.add(...t.customClass.split(\" \")),t.html&&(e.innerHTML=t.html);const i=[];this.slides.forEach(((t,e)=>{t.$el&&i.push(e)}));const s=t.index;let o=null;if(i.length){let t=i.reduce(((t,e)=>Math.abs(e-s){const o=i.$el;if(!o)return;const n=this.pages[this.page];n&&n.indexes&&n.indexes.indexOf(s)>-1?(t&&!o.classList.contains(t)&&(o.classList.add(t),this.trigger(\"selectSlide\",i)),o.removeAttribute(e)):(t&&o.classList.contains(t)&&(o.classList.remove(t),this.trigger(\"unselectSlide\",i)),o.setAttribute(e,!0))}))}updatePage(){this.updateMetrics(),this.slideTo(this.page,{friction:0})}onBeforeTransform(){this.option(\"infiniteX\",this.option(\"infinite\"))&&this.manageInfiniteTrack(),this.manageSlideVisiblity()}manageInfiniteTrack(){const t=this.contentWidth,e=this.viewportWidth;if(!this.option(\"infiniteX\",this.option(\"infinite\"))||this.pages.length<2||te&&(i.content.x-=t,this.pageIndex=this.pageIndex+this.pages.length,s=!0),s&&\"pointerdown\"===i.state&&i.resetDragPosition(),s}onTouchEnd(t,e){const i=this.option(\"dragFree\");if(!i&&this.pages.length>1&&t.dragOffset.time<350&&Math.abs(t.dragOffset.y)<1&&Math.abs(t.dragOffset.x)>5)this[t.dragOffset.x<0?\"slideNext\":\"slidePrev\"]();else if(i){const[,e]=this.getPageFromPosition(-1*t.transform.x);this.setPage(e)}else this.slideToClosest()}slideToClosest(t={}){let[,e]=this.getPageFromPosition(-1*this.Panzoom.content.x);this.slideTo(e,t)}getPageFromPosition(t){const e=this.pages.length;this.option(\"center\")&&(t+=.5*this.viewportWidth);const i=Math.floor(t/this.contentWidth);t-=i*this.contentWidth;let s=this.slides.find((e=>e.left<=t&&e.left+e.width>t));if(s){let t=this.findPageForSlide(s.index);return[t,t+i*e]}return[0,0]}setPage(t,e){let i=0,s=parseInt(t,10)||0;const o=this.page,n=this.pageIndex,a=this.pages.length,r=this.contentWidth,h=this.viewportWidth;if(t=(s%a+a)%a,this.option(\"infiniteX\",this.option(\"infinite\"))&&r>h){const o=Math.floor(s/a)||0,n=r;if(i=this.pages[t].left+o*n,!0===e&&a>2){let t=-1*this.Panzoom.content.x;const e=i-n,o=i+n,r=Math.abs(t-i),h=Math.abs(t-e),l=Math.abs(t-o);l{this.removeSlideEl(t)})),this.slides=[],this.Panzoom.destroy(),this.detachPlugins()}}y.version=\"4.0.31\",y.Plugins=p;const v=!(\"undefined\"==typeof window||!window.document||!window.document.createElement);let b=null;const x=[\"a[href]\",\"area[href]\",'input:not([disabled]):not([type=\"hidden\"]):not([aria-hidden])',\"select:not([disabled]):not([aria-hidden])\",\"textarea:not([disabled]):not([aria-hidden])\",\"button:not([disabled]):not([aria-hidden])\",\"iframe\",\"object\",\"embed\",\"video\",\"audio\",\"[contenteditable]\",'[tabindex]:not([tabindex^=\"-\"]):not([disabled]):not([aria-hidden])'],w=t=>{if(t&&v){null===b&&document.createElement(\"div\").focus({get preventScroll(){return b=!0,!1}});try{if(t.setActive)t.setActive();else if(b)t.focus({preventScroll:!0});else{const e=window.pageXOffset||document.body.scrollTop,i=window.pageYOffset||document.body.scrollLeft;t.focus(),document.body.scrollTo({top:e,left:i,behavior:\"auto\"})}}catch(t){}}};const $={minSlideCount:2,minScreenHeight:500,autoStart:!0,key:\"t\",Carousel:{},tpl:'
'};class C{constructor(t){this.fancybox=t,this.$container=null,this.state=\"init\";for(const t of[\"onPrepare\",\"onClosing\",\"onKeydown\"])this[t]=this[t].bind(this);this.events={prepare:this.onPrepare,closing:this.onClosing,keydown:this.onKeydown}}onPrepare(){this.getSlides().length=this.fancybox.option(\"Thumbs.minScreenHeight\")&&this.build()}onClosing(){this.Carousel&&this.Carousel.Panzoom.detachEvents()}onKeydown(t,e){e===t.option(\"Thumbs.key\")&&this.toggle()}build(){if(this.$container)return;const t=document.createElement(\"div\");t.classList.add(\"fancybox__thumbs\"),this.fancybox.$carousel.parentNode.insertBefore(t,this.fancybox.$carousel.nextSibling),this.Carousel=new y(t,e(!0,{Dots:!1,Navigation:!1,Sync:{friction:0},infinite:!1,center:!0,fill:!0,dragFree:!0,slidesPerPage:1,preload:1},this.fancybox.option(\"Thumbs.Carousel\"),{Sync:{target:this.fancybox.Carousel},slides:this.getSlides()})),this.Carousel.Panzoom.on(\"wheel\",((t,e)=>{e.preventDefault(),this.fancybox[e.deltaY<0?\"prev\":\"next\"]()})),this.$container=t,this.state=\"visible\"}getSlides(){const t=[];for(const e of this.fancybox.items){const i=e.thumb;i&&t.push({html:this.fancybox.option(\"Thumbs.tpl\").replace(/\\{\\{src\\}\\}/gi,i),customClass:`has-thumb has-${e.type||\"image\"}`})}return t}toggle(){\"visible\"===this.state?this.hide():\"hidden\"===this.state?this.show():this.build()}show(){\"hidden\"===this.state&&(this.$container.style.display=\"\",this.Carousel.Panzoom.attachEvents(),this.state=\"visible\")}hide(){\"visible\"===this.state&&(this.Carousel.Panzoom.detachEvents(),this.$container.style.display=\"none\",this.state=\"hidden\")}cleanup(){this.Carousel&&(this.Carousel.destroy(),this.Carousel=null),this.$container&&(this.$container.remove(),this.$container=null),this.state=\"init\"}attach(){this.fancybox.on(this.events)}detach(){this.fancybox.off(this.events),this.cleanup()}}C.defaults=$;const S=(t,e)=>{const i=new URL(t),s=new URLSearchParams(i.search);let o=new URLSearchParams;for(const[t,i]of[...s,...Object.entries(e)])\"t\"===t?o.set(\"start\",parseInt(i)):o.set(t,i);o=o.toString();let n=t.match(/#t=((.*)?\\d+s)/);return n&&(o+=`#t=${n[1]}`),o},E={video:{autoplay:!0,ratio:16/9},youtube:{autohide:1,fs:1,rel:0,hd:1,wmode:\"transparent\",enablejsapi:1,html5:1},vimeo:{hd:1,show_title:1,show_byline:1,show_portrait:0,fullscreen:1},html5video:{tpl:'',format:\"\"}};class P{constructor(t){this.fancybox=t;for(const t of[\"onInit\",\"onReady\",\"onCreateSlide\",\"onRemoveSlide\",\"onSelectSlide\",\"onUnselectSlide\",\"onRefresh\",\"onMessage\"])this[t]=this[t].bind(this);this.events={init:this.onInit,ready:this.onReady,\"Carousel.createSlide\":this.onCreateSlide,\"Carousel.removeSlide\":this.onRemoveSlide,\"Carousel.selectSlide\":this.onSelectSlide,\"Carousel.unselectSlide\":this.onUnselectSlide,\"Carousel.refresh\":this.onRefresh}}onInit(){for(const t of this.fancybox.items)this.processType(t)}processType(t){if(t.html)return t.src=t.html,t.type=\"html\",void delete t.html;const i=t.src||\"\";let s=t.type||this.fancybox.options.type,o=null;if(!i||\"string\"==typeof i){if(o=i.match(/(?:youtube\\.com|youtu\\.be|youtube\\-nocookie\\.com)\\/(?:watch\\?(?:.*&)?v=|v\\/|u\\/|embed\\/?)?(videoseries\\?list=(?:.*)|[\\w-]{11}|\\?listType=(?:.*)&list=(?:.*))(?:.*)/i)){const e=S(i,this.fancybox.option(\"Html.youtube\")),n=encodeURIComponent(o[1]);t.videoId=n,t.src=`https://www.youtube-nocookie.com/embed/${n}?${e}`,t.thumb=t.thumb||`https://i.ytimg.com/vi/${n}/mqdefault.jpg`,t.vendor=\"youtube\",s=\"video\"}else if(o=i.match(/^.+vimeo.com\\/(?:\\/)?([\\d]+)(.*)?/)){const e=S(i,this.fancybox.option(\"Html.vimeo\")),n=encodeURIComponent(o[1]);t.videoId=n,t.src=`https://player.vimeo.com/video/${n}?${e}`,t.vendor=\"vimeo\",s=\"video\"}else(o=i.match(/(?:maps\\.)?google\\.([a-z]{2,3}(?:\\.[a-z]{2})?)\\/(?:(?:(?:maps\\/(?:place\\/(?:.*)\\/)?\\@(.*),(\\d+.?\\d+?)z))|(?:\\?ll=))(.*)?/i))?(t.src=`//maps.google.${o[1]}/?ll=${(o[2]?o[2]+\"&z=\"+Math.floor(o[3])+(o[4]?o[4].replace(/^\\//,\"&\"):\"\"):o[4]+\"\").replace(/\\?/,\"&\")}&output=${o[4]&&o[4].indexOf(\"layer=c\")>0?\"svembed\":\"embed\"}`,s=\"map\"):(o=i.match(/(?:maps\\.)?google\\.([a-z]{2,3}(?:\\.[a-z]{2})?)\\/(?:maps\\/search\\/)(.*)/i))&&(t.src=`//maps.google.${o[1]}/maps?q=${o[2].replace(\"query=\",\"q=\").replace(\"api=1\",\"\")}&output=embed`,s=\"map\");s||(\"#\"===i.charAt(0)?s=\"inline\":(o=i.match(/\\.(mp4|mov|ogv|webm)((\\?|#).*)?$/i))?(s=\"html5video\",t.format=t.format||\"video/\"+(\"ogv\"===o[1]?\"ogg\":o[1])):i.match(/(^data:image\\/[a-z0-9+\\/=]*,)|(\\.(jp(e|g|eg)|gif|png|bmp|webp|svg|ico)((\\?|#).*)?$)/i)?s=\"image\":i.match(/\\.(pdf)((\\?|#).*)?$/i)&&(s=\"pdf\")),t.type=s||this.fancybox.option(\"defaultType\",\"image\"),\"html5video\"!==s&&\"video\"!==s||(t.video=e({},this.fancybox.option(\"Html.video\"),t.video),t._width&&t._height?t.ratio=parseFloat(t._width)/parseFloat(t._height):t.ratio=t.ratio||t.video.ratio||E.video.ratio)}}onReady(){this.fancybox.Carousel.slides.forEach((t=>{t.$el&&(this.setContent(t),t.index===this.fancybox.getSlide().index&&this.playVideo(t))}))}onCreateSlide(t,e,i){\"ready\"===this.fancybox.state&&this.setContent(i)}loadInlineContent(t){let e;if(t.src instanceof HTMLElement)e=t.src;else if(\"string\"==typeof t.src){const i=t.src.split(\"#\",2),s=2===i.length&&\"\"===i[0]?i[1]:i[0];e=document.getElementById(s)}if(e){if(\"clone\"===t.type||e.$placeHolder){e=e.cloneNode(!0);let i=e.getAttribute(\"id\");i=i?`${i}--clone`:`clone-${this.fancybox.id}-${t.index}`,e.setAttribute(\"id\",i)}else{const t=document.createElement(\"div\");t.classList.add(\"fancybox-placeholder\"),e.parentNode.insertBefore(t,e),e.$placeHolder=t}this.fancybox.setContent(t,e)}else this.fancybox.setError(t,\"{{ELEMENT_NOT_FOUND}}\")}loadAjaxContent(t){const e=this.fancybox,i=new XMLHttpRequest;e.showLoading(t),i.onreadystatechange=function(){i.readyState===XMLHttpRequest.DONE&&\"ready\"===e.state&&(e.hideLoading(t),200===i.status?e.setContent(t,i.responseText):e.setError(t,404===i.status?\"{{AJAX_NOT_FOUND}}\":\"{{AJAX_FORBIDDEN}}\"))};const s=t.ajax||null;i.open(s?\"POST\":\"GET\",t.src),i.setRequestHeader(\"Content-Type\",\"application/x-www-form-urlencoded\"),i.setRequestHeader(\"X-Requested-With\",\"XMLHttpRequest\"),i.send(s),t.xhr=i}loadIframeContent(t){const e=this.fancybox,i=document.createElement(\"iframe\");if(i.className=\"fancybox__iframe\",i.setAttribute(\"id\",`fancybox__iframe_${e.id}_${t.index}`),i.setAttribute(\"allow\",\"autoplay; fullscreen\"),i.setAttribute(\"scrolling\",\"auto\"),t.$iframe=i,\"iframe\"!==t.type||!1===t.preload)return i.setAttribute(\"src\",t.src),this.fancybox.setContent(t,i),void this.resizeIframe(t);e.showLoading(t);const s=document.createElement(\"div\");s.style.visibility=\"hidden\",this.fancybox.setContent(t,s),s.appendChild(i),i.onerror=()=>{e.setError(t,\"{{IFRAME_ERROR}}\")},i.onload=()=>{e.hideLoading(t);let s=!1;i.isReady||(i.isReady=!0,s=!0),i.src.length&&(i.parentNode.style.visibility=\"\",this.resizeIframe(t),s&&e.revealContent(t))},i.setAttribute(\"src\",t.src)}setAspectRatio(t){const e=t.$content,i=t.ratio;if(!e)return;let s=t._width,o=t._height;if(i||s&&o){Object.assign(e.style,{width:s&&o?\"100%\":\"\",height:s&&o?\"100%\":\"\",maxWidth:\"\",maxHeight:\"\"});let t=e.offsetWidth,n=e.offsetHeight;if(s=s||t,o=o||n,s>t||o>n){let e=Math.min(t/s,n/o);s*=e,o*=e}Math.abs(s/o-i)>.01&&(i{t.$el&&(t.$iframe&&this.resizeIframe(t),t.ratio&&this.setAspectRatio(t))}))}setContent(t){if(t&&!t.isDom){switch(t.type){case\"html\":this.fancybox.setContent(t,t.src);break;case\"html5video\":this.fancybox.setContent(t,this.fancybox.option(\"Html.html5video.tpl\").replace(/\\{\\{src\\}\\}/gi,t.src).replace(\"{{format}}\",t.format||t.html5video&&t.html5video.format||\"\").replace(\"{{poster}}\",t.poster||t.thumb||\"\"));break;case\"inline\":case\"clone\":this.loadInlineContent(t);break;case\"ajax\":this.loadAjaxContent(t);break;case\"pdf\":case\"video\":case\"map\":t.preload=!1;case\"iframe\":this.loadIframeContent(t)}t.ratio&&this.setAspectRatio(t)}}onSelectSlide(t,e,i){\"ready\"===t.state&&this.playVideo(i)}playVideo(t){if(\"html5video\"===t.type&&t.video.autoplay)try{const e=t.$el.querySelector(\"video\");if(e){const t=e.play();void 0!==t&&t.then((()=>{})).catch((t=>{e.muted=!0,e.play()}))}}catch(t){}if(\"video\"!==t.type||!t.$iframe||!t.$iframe.contentWindow)return;const e=()=>{if(\"done\"===t.state&&t.$iframe&&t.$iframe.contentWindow){let e;if(t.$iframe.isReady)return t.video&&t.video.autoplay&&(e=\"youtube\"==t.vendor?{event:\"command\",func:\"playVideo\"}:{method:\"play\",value:\"true\"}),void(e&&t.$iframe.contentWindow.postMessage(JSON.stringify(e),\"*\"));\"youtube\"===t.vendor&&(e={event:\"listening\",id:t.$iframe.getAttribute(\"id\")},t.$iframe.contentWindow.postMessage(JSON.stringify(e),\"*\"))}t.poller=setTimeout(e,250)};e()}onUnselectSlide(t,e,i){if(\"html5video\"===i.type){try{i.$el.querySelector(\"video\").pause()}catch(t){}return}let s=!1;\"vimeo\"==i.vendor?s={method:\"pause\",value:\"true\"}:\"youtube\"===i.vendor&&(s={event:\"command\",func:\"pauseVideo\"}),s&&i.$iframe&&i.$iframe.contentWindow&&i.$iframe.contentWindow.postMessage(JSON.stringify(s),\"*\"),clearTimeout(i.poller)}onRemoveSlide(t,e,i){i.xhr&&(i.xhr.abort(),i.xhr=null),i.$iframe&&(i.$iframe.onload=i.$iframe.onerror=null,i.$iframe.src=\"//about:blank\",i.$iframe=null);const s=i.$content;\"inline\"===i.type&&s&&(s.classList.remove(\"fancybox__content\"),\"none\"!==s.style.display&&(s.style.display=\"none\")),i.$closeButton&&(i.$closeButton.remove(),i.$closeButton=null);const o=s&&s.$placeHolder;o&&(o.parentNode.insertBefore(s,o),o.remove(),s.$placeHolder=null)}onMessage(t){try{let e=JSON.parse(t.data);if(\"https://player.vimeo.com\"===t.origin){if(\"ready\"===e.event)for(let e of document.getElementsByClassName(\"fancybox__iframe\"))e.contentWindow===t.source&&(e.isReady=1)}else\"https://www.youtube-nocookie.com\"===t.origin&&\"onReady\"===e.event&&(document.getElementById(e.id).isReady=1)}catch(t){}}attach(){this.fancybox.on(this.events),window.addEventListener(\"message\",this.onMessage,!1)}detach(){this.fancybox.off(this.events),window.removeEventListener(\"message\",this.onMessage,!1)}}P.defaults=E;class T{constructor(t){this.fancybox=t;for(const t of[\"onReady\",\"onClosing\",\"onDone\",\"onPageChange\",\"onCreateSlide\",\"onRemoveSlide\",\"onImageStatusChange\"])this[t]=this[t].bind(this);this.events={ready:this.onReady,closing:this.onClosing,done:this.onDone,\"Carousel.change\":this.onPageChange,\"Carousel.createSlide\":this.onCreateSlide,\"Carousel.removeSlide\":this.onRemoveSlide}}onReady(){this.fancybox.Carousel.slides.forEach((t=>{t.$el&&this.setContent(t)}))}onDone(t,e){this.handleCursor(e)}onClosing(t){clearTimeout(this.clickTimer),this.clickTimer=null,t.Carousel.slides.forEach((t=>{t.$image&&(t.state=\"destroy\"),t.Panzoom&&t.Panzoom.detachEvents()})),\"closing\"===this.fancybox.state&&this.canZoom(t.getSlide())&&this.zoomOut()}onCreateSlide(t,e,i){\"ready\"===this.fancybox.state&&this.setContent(i)}onRemoveSlide(t,e,i){i.$image&&(i.$el.classList.remove(t.option(\"Image.canZoomInClass\")),i.$image.remove(),i.$image=null),i.Panzoom&&(i.Panzoom.destroy(),i.Panzoom=null),i.$el&&i.$el.dataset&&delete i.$el.dataset.imageFit}setContent(t){if(t.isDom||t.html||t.type&&\"image\"!==t.type)return;if(t.$image)return;t.type=\"image\",t.state=\"loading\";const e=document.createElement(\"div\");e.style.visibility=\"hidden\";const i=document.createElement(\"img\");i.addEventListener(\"load\",(e=>{e.stopImmediatePropagation(),this.onImageStatusChange(t)})),i.addEventListener(\"error\",(()=>{this.onImageStatusChange(t)})),i.src=t.src,i.alt=\"\",i.draggable=!1,i.classList.add(\"fancybox__image\"),t.srcset&&i.setAttribute(\"srcset\",t.srcset),t.sizes&&i.setAttribute(\"sizes\",t.sizes),t.$image=i;const s=this.fancybox.option(\"Image.wrap\");if(s){const o=document.createElement(\"div\");o.classList.add(\"string\"==typeof s?s:\"fancybox__image-wrap\"),o.appendChild(i),e.appendChild(o),t.$wrap=o}else e.appendChild(i);t.$el.dataset.imageFit=this.fancybox.option(\"Image.fit\"),this.fancybox.setContent(t,e),i.complete||i.error?this.onImageStatusChange(t):this.fancybox.showLoading(t)}onImageStatusChange(t){const e=t.$image;e&&\"loading\"===t.state&&(e.complete&&e.naturalWidth&&e.naturalHeight?(this.fancybox.hideLoading(t),\"contain\"===this.fancybox.option(\"Image.fit\")&&this.initSlidePanzoom(t),t.$el.addEventListener(\"wheel\",(e=>this.onWheel(t,e)),{passive:!1}),t.$content.addEventListener(\"click\",(e=>this.onClick(t,e)),{passive:!1}),this.revealContent(t)):this.fancybox.setError(t,\"{{IMAGE_ERROR}}\"))}initSlidePanzoom(t){t.Panzoom||(t.Panzoom=new d(t.$el,e(!0,this.fancybox.option(\"Image.Panzoom\",{}),{viewport:t.$wrap,content:t.$image,width:t._width,height:t._height,wrapInner:!1,textSelection:!0,touch:this.fancybox.option(\"Image.touch\"),panOnlyZoomed:!0,click:!1,wheel:!1})),t.Panzoom.on(\"startAnimation\",(()=>{this.fancybox.trigger(\"Image.startAnimation\",t)})),t.Panzoom.on(\"endAnimation\",(()=>{\"zoomIn\"===t.state&&this.fancybox.done(t),this.handleCursor(t),this.fancybox.trigger(\"Image.endAnimation\",t)})),t.Panzoom.on(\"afterUpdate\",(()=>{this.handleCursor(t),this.fancybox.trigger(\"Image.afterUpdate\",t)})))}revealContent(t){null===this.fancybox.Carousel.prevPage&&t.index===this.fancybox.options.startIndex&&this.canZoom(t)?this.zoomIn():this.fancybox.revealContent(t)}getZoomInfo(t){const e=t.$thumb.getBoundingClientRect(),i=e.width,s=e.height,o=t.$content.getBoundingClientRect(),n=o.width,a=o.height,r=o.top-e.top,h=o.left-e.left;let l=this.fancybox.option(\"Image.zoomOpacity\");return\"auto\"===l&&(l=Math.abs(i/s-n/a)>.1),{top:r,left:h,scale:n&&i?i/n:1,opacity:l}}canZoom(t){const e=this.fancybox,i=e.$container;if(window.visualViewport&&1!==window.visualViewport.scale)return!1;if(t.Panzoom&&!t.Panzoom.content.width)return!1;if(!e.option(\"Image.zoom\")||\"contain\"!==e.option(\"Image.fit\"))return!1;const s=t.$thumb;if(!s||\"loading\"===t.state)return!1;i.classList.add(\"fancybox__no-click\");const o=s.getBoundingClientRect();let n;if(this.fancybox.option(\"Image.ignoreCoveredThumbnail\")){const t=document.elementFromPoint(o.left+1,o.top+1)===s,e=document.elementFromPoint(o.right-1,o.bottom-1)===s;n=t&&e}else n=document.elementFromPoint(o.left+.5*o.width,o.top+.5*o.height)===s;return i.classList.remove(\"fancybox__no-click\"),n}zoomIn(){const t=this.fancybox,e=t.getSlide(),i=e.Panzoom,{top:s,left:o,scale:n,opacity:a}=this.getZoomInfo(e);t.trigger(\"reveal\",e),i.panTo({x:-1*o,y:-1*s,scale:n,friction:0,ignoreBounds:!0}),e.$content.style.visibility=\"\",e.state=\"zoomIn\",!0===a&&i.on(\"afterTransform\",(t=>{\"zoomIn\"!==e.state&&\"zoomOut\"!==e.state||(t.$content.style.opacity=Math.min(1,1-(1-t.content.scale)/(1-n)))})),i.panTo({x:0,y:0,scale:1,friction:this.fancybox.option(\"Image.zoomFriction\")})}zoomOut(){const t=this.fancybox,e=t.getSlide(),i=e.Panzoom;if(!i)return;e.state=\"zoomOut\",t.state=\"customClosing\",e.$caption&&(e.$caption.style.visibility=\"hidden\");let s=this.fancybox.option(\"Image.zoomFriction\");const o=t=>{const{top:o,left:n,scale:a,opacity:r}=this.getZoomInfo(e);t||r||(s*=.82),i.panTo({x:-1*n,y:-1*o,scale:a,friction:s,ignoreBounds:!0}),s*=.98};window.addEventListener(\"scroll\",o),i.once(\"endAnimation\",(()=>{window.removeEventListener(\"scroll\",o),t.destroy()})),o()}handleCursor(t){if(\"image\"!==t.type||!t.$el)return;const e=t.Panzoom,i=this.fancybox.option(\"Image.click\",!1,t),s=this.fancybox.option(\"Image.touch\"),o=t.$el.classList,n=this.fancybox.option(\"Image.canZoomInClass\"),a=this.fancybox.option(\"Image.canZoomOutClass\");if(o.remove(a),o.remove(n),e&&\"toggleZoom\"===i){e&&1===e.content.scale&&e.option(\"maxScale\")-e.content.scale>.01?o.add(n):e.content.scale>1&&!s&&o.add(a)}else\"close\"===i&&o.add(a)}onWheel(t,e){if(\"ready\"===this.fancybox.state&&!1!==this.fancybox.trigger(\"Image.wheel\",e))switch(this.fancybox.option(\"Image.wheel\")){case\"zoom\":\"done\"===t.state&&t.Panzoom&&t.Panzoom.zoomWithWheel(e);break;case\"close\":this.fancybox.close();break;case\"slide\":this.fancybox[e.deltaY<0?\"prev\":\"next\"]()}}onClick(t,e){if(\"ready\"!==this.fancybox.state)return;const i=t.Panzoom;if(i&&(i.dragPosition.midPoint||0!==i.dragOffset.x||0!==i.dragOffset.y||1!==i.dragOffset.scale))return;if(this.fancybox.Carousel.Panzoom.lockAxis)return!1;const s=i=>{switch(i){case\"toggleZoom\":e.stopPropagation(),t.Panzoom&&t.Panzoom.zoomWithClick(e);break;case\"close\":this.fancybox.close();break;case\"next\":e.stopPropagation(),this.fancybox.next()}},o=this.fancybox.option(\"Image.click\"),n=this.fancybox.option(\"Image.doubleClick\");n?this.clickTimer?(clearTimeout(this.clickTimer),this.clickTimer=null,s(n)):this.clickTimer=setTimeout((()=>{this.clickTimer=null,s(o)}),300):s(o)}onPageChange(t,e){const i=t.getSlide();e.slides.forEach((t=>{t.Panzoom&&\"done\"===t.state&&t.index!==i.index&&t.Panzoom.panTo({x:0,y:0,scale:1,friction:.8})}))}attach(){this.fancybox.on(this.events)}detach(){this.fancybox.off(this.events)}}T.defaults={canZoomInClass:\"can-zoom_in\",canZoomOutClass:\"can-zoom_out\",zoom:!0,zoomOpacity:\"auto\",zoomFriction:.82,ignoreCoveredThumbnail:!1,touch:!0,click:\"toggleZoom\",doubleClick:null,wheel:\"zoom\",fit:\"contain\",wrap:!1,Panzoom:{ratio:1}};class L{constructor(t){this.fancybox=t;for(const t of[\"onChange\",\"onClosing\"])this[t]=this[t].bind(this);this.events={initCarousel:this.onChange,\"Carousel.change\":this.onChange,closing:this.onClosing},this.hasCreatedHistory=!1,this.origHash=\"\",this.timer=null}onChange(t){const e=t.Carousel;this.timer&&clearTimeout(this.timer);const i=null===e.prevPage,s=t.getSlide(),o=new URL(document.URL).hash;let n=!1;if(s.slug)n=\"#\"+s.slug;else{const i=s.$trigger&&s.$trigger.dataset,o=t.option(\"slug\")||i&&i.fancybox;o&&o.length&&\"true\"!==o&&(n=\"#\"+o+(e.slides.length>1?\"-\"+(s.index+1):\"\"))}i&&(this.origHash=o!==n?o:\"\"),n&&o!==n&&(this.timer=setTimeout((()=>{try{window.history[i?\"pushState\":\"replaceState\"]({},document.title,window.location.pathname+window.location.search+n),i&&(this.hasCreatedHistory=!0)}catch(t){}}),300))}onClosing(){if(this.timer&&clearTimeout(this.timer),!0!==this.hasSilentClose)try{return void window.history.replaceState({},document.title,window.location.pathname+window.location.search+(this.origHash||\"\"))}catch(t){}}attach(t){t.on(this.events)}detach(t){t.off(this.events)}static startFromUrl(){const t=L.Fancybox;if(!t||t.getInstance()||!1===t.defaults.Hash)return;const{hash:e,slug:i,index:s}=L.getParsedURL();if(!i)return;let o=document.querySelector(`[data-slug=\"${e}\"]`);if(o&&o.dispatchEvent(new CustomEvent(\"click\",{bubbles:!0,cancelable:!0})),t.getInstance())return;const n=document.querySelectorAll(`[data-fancybox=\"${i}\"]`);n.length&&(null===s&&1===n.length?o=n[0]:s&&(o=n[s-1]),o&&o.dispatchEvent(new CustomEvent(\"click\",{bubbles:!0,cancelable:!0})))}static onHashChange(){const{slug:t,index:e}=L.getParsedURL(),i=L.Fancybox,s=i&&i.getInstance();if(s&&s.plugins.Hash){if(t){const i=s.Carousel;if(t===s.option(\"slug\"))return i.slideTo(e-1);for(let e of i.slides)if(e.slug&&e.slug===t)return i.slideTo(e.index);const o=s.getSlide(),n=o.$trigger&&o.$trigger.dataset;if(n&&n.fancybox===t)return i.slideTo(e-1)}s.plugins.Hash.hasSilentClose=!0,s.close()}L.startFromUrl()}static create(t){function e(){window.addEventListener(\"hashchange\",L.onHashChange,!1),L.startFromUrl()}L.Fancybox=t,v&&window.requestAnimationFrame((()=>{/complete|interactive|loaded/.test(document.readyState)?e():document.addEventListener(\"DOMContentLoaded\",e)}))}static destroy(){window.removeEventListener(\"hashchange\",L.onHashChange,!1)}static getParsedURL(){const t=window.location.hash.substr(1),e=t.split(\"-\"),i=e.length>1&&/^\\+?\\d+$/.test(e[e.length-1])&&parseInt(e.pop(-1),10)||null;return{hash:t,slug:e.join(\"-\"),index:i}}}const _={pageXOffset:0,pageYOffset:0,element:()=>document.fullscreenElement||document.mozFullScreenElement||document.webkitFullscreenElement,activate(t){_.pageXOffset=window.pageXOffset,_.pageYOffset=window.pageYOffset,t.requestFullscreen?t.requestFullscreen():t.mozRequestFullScreen?t.mozRequestFullScreen():t.webkitRequestFullscreen?t.webkitRequestFullscreen():t.msRequestFullscreen&&t.msRequestFullscreen()},deactivate(){document.exitFullscreen?document.exitFullscreen():document.mozCancelFullScreen?document.mozCancelFullScreen():document.webkitExitFullscreen&&document.webkitExitFullscreen()}};class A{constructor(t){this.fancybox=t,this.active=!1,this.handleVisibilityChange=this.handleVisibilityChange.bind(this)}isActive(){return this.active}setTimer(){if(!this.active||this.timer)return;const t=this.fancybox.option(\"slideshow.delay\",3e3);this.timer=setTimeout((()=>{this.timer=null,this.fancybox.option(\"infinite\")||this.fancybox.getSlide().index!==this.fancybox.Carousel.slides.length-1?this.fancybox.next():this.fancybox.jumpTo(0,{friction:0})}),t);let e=this.$progress;e||(e=document.createElement(\"div\"),e.classList.add(\"fancybox__progress\"),this.fancybox.$carousel.parentNode.insertBefore(e,this.fancybox.$carousel),this.$progress=e,e.offsetHeight),e.style.transitionDuration=`${t}ms`,e.style.transform=\"scaleX(1)\"}clearTimer(){clearTimeout(this.timer),this.timer=null,this.$progress&&(this.$progress.style.transitionDuration=\"\",this.$progress.style.transform=\"\",this.$progress.offsetHeight)}activate(){this.active||(this.active=!0,this.fancybox.$container.classList.add(\"has-slideshow\"),\"done\"===this.fancybox.getSlide().state&&this.setTimer(),document.addEventListener(\"visibilitychange\",this.handleVisibilityChange,!1))}handleVisibilityChange(){this.deactivate()}deactivate(){this.active=!1,this.clearTimer(),this.fancybox.$container.classList.remove(\"has-slideshow\"),document.removeEventListener(\"visibilitychange\",this.handleVisibilityChange,!1)}toggle(){this.active?this.deactivate():this.fancybox.Carousel.slides.length>1&&this.activate()}}const z={display:[\"counter\",\"zoom\",\"slideshow\",\"fullscreen\",\"thumbs\",\"close\"],autoEnable:!0,items:{counter:{position:\"left\",type:\"div\",class:\"fancybox__counter\",html:' / ',attr:{tabindex:-1}},prev:{type:\"button\",class:\"fancybox__button--prev\",label:\"PREV\",html:'',attr:{\"data-fancybox-prev\":\"\"}},next:{type:\"button\",class:\"fancybox__button--next\",label:\"NEXT\",html:'',attr:{\"data-fancybox-next\":\"\"}},fullscreen:{type:\"button\",class:\"fancybox__button--fullscreen\",label:\"TOGGLE_FULLSCREEN\",html:'\\n \\n \\n ',click:function(t){t.preventDefault(),_.element()?_.deactivate():_.activate(this.fancybox.$container)}},slideshow:{type:\"button\",class:\"fancybox__button--slideshow\",label:\"TOGGLE_SLIDESHOW\",html:'\\n \\n \\n ',click:function(t){t.preventDefault(),this.Slideshow.toggle()}},zoom:{type:\"button\",class:\"fancybox__button--zoom\",label:\"TOGGLE_ZOOM\",html:'',click:function(t){t.preventDefault();const e=this.fancybox.getSlide().Panzoom;e&&e.toggleZoom()}},download:{type:\"link\",label:\"DOWNLOAD\",class:\"fancybox__button--download\",html:'',click:function(t){t.stopPropagation()}},thumbs:{type:\"button\",label:\"TOGGLE_THUMBS\",class:\"fancybox__button--thumbs\",html:'',click:function(t){t.stopPropagation();const e=this.fancybox.plugins.Thumbs;e&&e.toggle()}},close:{type:\"button\",label:\"CLOSE\",class:\"fancybox__button--close\",html:'',attr:{\"data-fancybox-close\":\"\",tabindex:0}}}};class k{constructor(t){this.fancybox=t,this.$container=null,this.state=\"init\";for(const t of[\"onInit\",\"onPrepare\",\"onDone\",\"onKeydown\",\"onClosing\",\"onChange\",\"onSettle\",\"onRefresh\"])this[t]=this[t].bind(this);this.events={init:this.onInit,prepare:this.onPrepare,done:this.onDone,keydown:this.onKeydown,closing:this.onClosing,\"Carousel.change\":this.onChange,\"Carousel.settle\":this.onSettle,\"Carousel.Panzoom.touchStart\":()=>this.onRefresh(),\"Image.startAnimation\":(t,e)=>this.onRefresh(e),\"Image.afterUpdate\":(t,e)=>this.onRefresh(e)}}onInit(){if(this.fancybox.option(\"Toolbar.autoEnable\")){let t=!1;for(const e of this.fancybox.items)if(\"image\"===e.type){t=!0;break}if(!t)return void(this.state=\"disabled\")}for(const e of this.fancybox.option(\"Toolbar.display\")){if(\"close\"===(t(e)?e.id:e)){this.fancybox.options.closeButton=!1;break}}}onPrepare(){const t=this.fancybox;if(\"init\"===this.state&&(this.build(),this.update(),this.Slideshow=new A(t),!t.Carousel.prevPage&&(t.option(\"slideshow.autoStart\")&&this.Slideshow.activate(),t.option(\"fullscreen.autoStart\")&&!_.element())))try{_.activate(t.$container)}catch(t){}}onFsChange(){window.scrollTo(_.pageXOffset,_.pageYOffset)}onSettle(){const t=this.fancybox,e=this.Slideshow;e&&e.isActive()&&(t.getSlide().index!==t.Carousel.slides.length-1||t.option(\"infinite\")?\"done\"===t.getSlide().state&&e.setTimer():e.deactivate())}onChange(){this.update(),this.Slideshow&&this.Slideshow.isActive()&&this.Slideshow.clearTimer()}onDone(t,e){const i=this.Slideshow;e.index===t.getSlide().index&&(this.update(),i&&i.isActive()&&(t.option(\"infinite\")||e.index!==t.Carousel.slides.length-1?i.setTimer():i.deactivate()))}onRefresh(t){t&&t.index!==this.fancybox.getSlide().index||(this.update(),!this.Slideshow||!this.Slideshow.isActive()||t&&\"done\"!==t.state||this.Slideshow.deactivate())}onKeydown(t,e,i){\" \"===e&&this.Slideshow&&(this.Slideshow.toggle(),i.preventDefault())}onClosing(){this.Slideshow&&this.Slideshow.deactivate(),document.removeEventListener(\"fullscreenchange\",this.onFsChange)}createElement(t){let e;\"div\"===t.type?e=document.createElement(\"div\"):(e=document.createElement(\"link\"===t.type?\"a\":\"button\"),e.classList.add(\"carousel__button\")),e.innerHTML=t.html,e.setAttribute(\"tabindex\",t.tabindex||0),t.class&&e.classList.add(...t.class.split(\" \"));for(const i in t.attr)e.setAttribute(i,t.attr[i]);t.label&&e.setAttribute(\"title\",this.fancybox.localize(`{{${t.label}}}`)),t.click&&e.addEventListener(\"click\",t.click.bind(this)),\"prev\"===t.id&&e.setAttribute(\"data-fancybox-prev\",\"\"),\"next\"===t.id&&e.setAttribute(\"data-fancybox-next\",\"\");const i=e.querySelector(\"svg\");return i&&(i.setAttribute(\"role\",\"img\"),i.setAttribute(\"tabindex\",\"-1\"),i.setAttribute(\"xmlns\",\"http://www.w3.org/2000/svg\")),e}build(){this.cleanup();const i=this.fancybox.option(\"Toolbar.items\"),s=[{position:\"left\",items:[]},{position:\"center\",items:[]},{position:\"right\",items:[]}],o=this.fancybox.plugins.Thumbs;for(const n of this.fancybox.option(\"Toolbar.display\")){let a,r;if(t(n)?(a=n.id,r=e({},i[a],n)):(a=n,r=i[a]),[\"counter\",\"next\",\"prev\",\"slideshow\"].includes(a)&&this.fancybox.items.length<2)continue;if(\"fullscreen\"===a){if(!document.fullscreenEnabled||window.fullScreen)continue;document.addEventListener(\"fullscreenchange\",this.onFsChange)}if(\"thumbs\"===a&&(!o||\"disabled\"===o.state))continue;if(!r)continue;let h=r.position||\"right\",l=s.find((t=>t.position===h));l&&l.items.push(r)}const n=document.createElement(\"div\");n.classList.add(\"fancybox__toolbar\");for(const t of s)if(t.items.length){const e=document.createElement(\"div\");e.classList.add(\"fancybox__toolbar__items\"),e.classList.add(`fancybox__toolbar__items--${t.position}`);for(const i of t.items)e.appendChild(this.createElement(i));n.appendChild(e)}this.fancybox.$carousel.parentNode.insertBefore(n,this.fancybox.$carousel),this.$container=n}update(){const t=this.fancybox.getSlide(),e=t.index,i=this.fancybox.items.length,s=t.downloadSrc||(\"image\"!==t.type||t.error?null:t.src);for(const t of this.fancybox.$container.querySelectorAll(\"a.fancybox__button--download\"))s?(t.removeAttribute(\"disabled\"),t.removeAttribute(\"tabindex\"),t.setAttribute(\"href\",s),t.setAttribute(\"download\",s),t.setAttribute(\"target\",\"_blank\")):(t.setAttribute(\"disabled\",\"\"),t.setAttribute(\"tabindex\",-1),t.removeAttribute(\"href\"),t.removeAttribute(\"download\"));const o=t.Panzoom,n=o&&o.option(\"maxScale\")>o.option(\"baseScale\");for(const t of this.fancybox.$container.querySelectorAll(\".fancybox__button--zoom\"))n?t.removeAttribute(\"disabled\"):t.setAttribute(\"disabled\",\"\");for(const e of this.fancybox.$container.querySelectorAll(\"[data-fancybox-index]\"))e.innerHTML=t.index+1;for(const t of this.fancybox.$container.querySelectorAll(\"[data-fancybox-count]\"))t.innerHTML=i;if(!this.fancybox.option(\"infinite\")){for(const t of this.fancybox.$container.querySelectorAll(\"[data-fancybox-prev]\"))0===e?t.setAttribute(\"disabled\",\"\"):t.removeAttribute(\"disabled\");for(const t of this.fancybox.$container.querySelectorAll(\"[data-fancybox-next]\"))e===i-1?t.setAttribute(\"disabled\",\"\"):t.removeAttribute(\"disabled\")}}cleanup(){this.Slideshow&&this.Slideshow.isActive()&&this.Slideshow.clearTimer(),this.$container&&this.$container.remove(),this.$container=null}attach(){this.fancybox.on(this.events)}detach(){this.fancybox.off(this.events),this.cleanup()}}k.defaults=z;const O={ScrollLock:class{constructor(t){this.fancybox=t,this.viewport=null,this.pendingUpdate=null;for(const t of[\"onReady\",\"onResize\",\"onTouchstart\",\"onTouchmove\"])this[t]=this[t].bind(this)}onReady(){const t=window.visualViewport;t&&(this.viewport=t,this.startY=0,t.addEventListener(\"resize\",this.onResize),this.updateViewport()),window.addEventListener(\"touchstart\",this.onTouchstart,{passive:!1}),window.addEventListener(\"touchmove\",this.onTouchmove,{passive:!1}),window.addEventListener(\"wheel\",this.onWheel,{passive:!1})}onResize(){this.updateViewport()}updateViewport(){const t=this.fancybox,e=this.viewport,i=e.scale||1,s=t.$container;if(!s)return;let o=\"\",n=\"\",a=\"\";i-1>.1&&(o=e.width*i+\"px\",n=e.height*i+\"px\",a=`translate3d(${e.offsetLeft}px, ${e.offsetTop}px, 0) scale(${1/i})`),s.style.width=o,s.style.height=n,s.style.transform=a}onTouchstart(t){this.startY=t.touches?t.touches[0].screenY:t.screenY}onTouchmove(t){const e=this.startY,i=window.innerWidth/window.document.documentElement.clientWidth;if(!t.cancelable)return;if(t.touches.length>1||1!==i)return;const o=s(t.composedPath()[0]);if(!o)return void t.preventDefault();const n=window.getComputedStyle(o),a=parseInt(n.getPropertyValue(\"height\"),10),r=t.touches?t.touches[0].screenY:t.screenY,h=e<=r&&0===o.scrollTop,l=e>=r&&o.scrollHeight-o.scrollTop===a;(h||l)&&t.preventDefault()}onWheel(t){s(t.composedPath()[0])||t.preventDefault()}cleanup(){this.pendingUpdate&&(cancelAnimationFrame(this.pendingUpdate),this.pendingUpdate=null);const t=this.viewport;t&&(t.removeEventListener(\"resize\",this.onResize),this.viewport=null),window.removeEventListener(\"touchstart\",this.onTouchstart,!1),window.removeEventListener(\"touchmove\",this.onTouchmove,!1),window.removeEventListener(\"wheel\",this.onWheel,{passive:!1})}attach(){this.fancybox.on(\"initLayout\",this.onReady)}detach(){this.fancybox.off(\"initLayout\",this.onReady),this.cleanup()}},Thumbs:C,Html:P,Toolbar:k,Image:T,Hash:L};const M={startIndex:0,preload:1,infinite:!0,showClass:\"fancybox-zoomInUp\",hideClass:\"fancybox-fadeOut\",animated:!0,hideScrollbar:!0,parentEl:null,mainClass:null,autoFocus:!0,trapFocus:!0,placeFocusBack:!0,click:\"close\",closeButton:\"inside\",dragToClose:!0,keyboard:{Escape:\"close\",Delete:\"close\",Backspace:\"close\",PageUp:\"next\",PageDown:\"prev\",ArrowUp:\"next\",ArrowDown:\"prev\",ArrowRight:\"next\",ArrowLeft:\"prev\"},template:{closeButton:'',spinner:'',main:null},l10n:{CLOSE:\"Close\",NEXT:\"Next\",PREV:\"Previous\",MODAL:\"You can close this modal content with the ESC key\",ERROR:\"Something Went Wrong, Please Try Again Later\",IMAGE_ERROR:\"Image Not Found\",ELEMENT_NOT_FOUND:\"HTML Element Not Found\",AJAX_NOT_FOUND:\"Error Loading AJAX : Not Found\",AJAX_FORBIDDEN:\"Error Loading AJAX : Forbidden\",IFRAME_ERROR:\"Error Loading Page\",TOGGLE_ZOOM:\"Toggle zoom level\",TOGGLE_THUMBS:\"Toggle thumbnails\",TOGGLE_SLIDESHOW:\"Toggle slideshow\",TOGGLE_FULLSCREEN:\"Toggle full-screen mode\",DOWNLOAD:\"Download\"}},I=new Map;let F=0;class R extends l{constructor(t,i={}){t=t.map((t=>(t.width&&(t._width=t.width),t.height&&(t._height=t.height),t))),super(e(!0,{},M,i)),this.bindHandlers(),this.state=\"init\",this.setItems(t),this.attachPlugins(R.Plugins),this.trigger(\"init\"),!0===this.option(\"hideScrollbar\")&&this.hideScrollbar(),this.initLayout(),this.initCarousel(),this.attachEvents(),I.set(this.id,this),this.trigger(\"prepare\"),this.state=\"ready\",this.trigger(\"ready\"),this.$container.setAttribute(\"aria-hidden\",\"false\"),this.option(\"trapFocus\")&&this.focus()}option(t,...e){const i=this.getSlide();let s=i?i[t]:void 0;return void 0!==s?(\"function\"==typeof s&&(s=s.call(this,this,...e)),s):super.option(t,...e)}bindHandlers(){for(const t of[\"onMousedown\",\"onKeydown\",\"onClick\",\"onFocus\",\"onCreateSlide\",\"onSettle\",\"onTouchMove\",\"onTouchEnd\",\"onTransform\"])this[t]=this[t].bind(this)}attachEvents(){document.addEventListener(\"mousedown\",this.onMousedown),document.addEventListener(\"keydown\",this.onKeydown,!0),this.option(\"trapFocus\")&&document.addEventListener(\"focus\",this.onFocus,!0),this.$container.addEventListener(\"click\",this.onClick)}detachEvents(){document.removeEventListener(\"mousedown\",this.onMousedown),document.removeEventListener(\"keydown\",this.onKeydown,!0),document.removeEventListener(\"focus\",this.onFocus,!0),this.$container.removeEventListener(\"click\",this.onClick)}initLayout(){this.$root=this.option(\"parentEl\")||document.body;let t=this.option(\"template.main\");t&&(this.$root.insertAdjacentHTML(\"beforeend\",this.localize(t)),this.$container=this.$root.querySelector(\".fancybox__container\")),this.$container||(this.$container=document.createElement(\"div\"),this.$root.appendChild(this.$container)),this.$container.onscroll=()=>(this.$container.scrollLeft=0,!1),Object.entries({class:\"fancybox__container\",role:\"dialog\",tabIndex:\"-1\",\"aria-modal\":\"true\",\"aria-hidden\":\"true\",\"aria-label\":this.localize(\"{{MODAL}}\")}).forEach((t=>this.$container.setAttribute(...t))),this.option(\"animated\")&&this.$container.classList.add(\"is-animated\"),this.$backdrop=this.$container.querySelector(\".fancybox__backdrop\"),this.$backdrop||(this.$backdrop=document.createElement(\"div\"),this.$backdrop.classList.add(\"fancybox__backdrop\"),this.$container.appendChild(this.$backdrop)),this.$carousel=this.$container.querySelector(\".fancybox__carousel\"),this.$carousel||(this.$carousel=document.createElement(\"div\"),this.$carousel.classList.add(\"fancybox__carousel\"),this.$container.appendChild(this.$carousel)),this.$container.Fancybox=this,this.id=this.$container.getAttribute(\"id\"),this.id||(this.id=this.options.id||++F,this.$container.setAttribute(\"id\",\"fancybox-\"+this.id));const e=this.option(\"mainClass\");return e&&this.$container.classList.add(...e.split(\" \")),document.documentElement.classList.add(\"with-fancybox\"),this.trigger(\"initLayout\"),this}setItems(t){const e=[];for(const i of t){const t=i.$trigger;if(t){const e=t.dataset||{};i.src=e.src||t.getAttribute(\"href\")||i.src,i.type=e.type||i.type,!i.src&&t instanceof HTMLImageElement&&(i.src=t.currentSrc||i.$trigger.src)}let s=i.$thumb;if(!s){let t=i.$trigger&&i.$trigger.origTarget;t&&(s=t instanceof HTMLImageElement?t:t.querySelector(\"img:not([aria-hidden])\")),!s&&i.$trigger&&(s=i.$trigger instanceof HTMLImageElement?i.$trigger:i.$trigger.querySelector(\"img:not([aria-hidden])\"))}i.$thumb=s||null;let o=i.thumb;!o&&s&&(o=s.currentSrc||s.src,!o&&s.dataset&&(o=s.dataset.lazySrc||s.dataset.src)),o||\"image\"!==i.type||(o=i.src),i.thumb=o||null,i.caption=i.caption||\"\",e.push(i)}this.items=e}initCarousel(){return this.Carousel=new y(this.$carousel,e(!0,{},{prefix:\"\",classNames:{viewport:\"fancybox__viewport\",track:\"fancybox__track\",slide:\"fancybox__slide\"},textSelection:!0,preload:this.option(\"preload\"),friction:.88,slides:this.items,initialPage:this.options.startIndex,slidesPerPage:1,infiniteX:this.option(\"infinite\"),infiniteY:!0,l10n:this.option(\"l10n\"),Dots:!1,Navigation:{classNames:{main:\"fancybox__nav\",button:\"carousel__button\",next:\"is-next\",prev:\"is-prev\"}},Panzoom:{textSelection:!0,panOnlyZoomed:()=>this.Carousel&&this.Carousel.pages&&this.Carousel.pages.length<2&&!this.option(\"dragToClose\"),lockAxis:()=>{if(this.Carousel){let t=\"x\";return this.option(\"dragToClose\")&&(t+=\"y\"),t}}},on:{\"*\":(t,...e)=>this.trigger(`Carousel.${t}`,...e),init:t=>this.Carousel=t,createSlide:this.onCreateSlide,settle:this.onSettle}},this.option(\"Carousel\"))),this.option(\"dragToClose\")&&this.Carousel.Panzoom.on({touchMove:this.onTouchMove,afterTransform:this.onTransform,touchEnd:this.onTouchEnd}),this.trigger(\"initCarousel\"),this}onCreateSlide(t,e){let i=e.caption||\"\";if(\"function\"==typeof this.options.caption&&(i=this.options.caption.call(this,this,this.Carousel,e)),\"string\"==typeof i&&i.length){const t=document.createElement(\"div\"),s=`fancybox__caption_${this.id}_${e.index}`;t.className=\"fancybox__caption\",t.innerHTML=i,t.setAttribute(\"id\",s),e.$caption=e.$el.appendChild(t),e.$el.classList.add(\"has-caption\"),e.$el.setAttribute(\"aria-labelledby\",s)}}onSettle(){this.option(\"autoFocus\")&&this.focus()}onFocus(t){this.isTopmost()&&this.focus(t)}onClick(t){if(t.defaultPrevented)return;let e=t.composedPath()[0];if(e.matches(\"[data-fancybox-close]\"))return t.preventDefault(),void R.close(!1,t);if(e.matches(\"[data-fancybox-next]\"))return t.preventDefault(),void R.next();if(e.matches(\"[data-fancybox-prev]\"))return t.preventDefault(),void R.prev();const i=document.activeElement;if(i){if(i.closest(\"[contenteditable]\"))return;e.matches(x)||i.blur()}if(e.closest(\".fancybox__content\"))return;if(getSelection().toString().length)return;if(!1===this.trigger(\"click\",t))return;switch(this.option(\"click\")){case\"close\":this.close();break;case\"next\":this.next()}}onTouchMove(){const t=this.getSlide().Panzoom;return!t||1===t.content.scale}onTouchEnd(t){const e=t.dragOffset.y;Math.abs(e)>=150||Math.abs(e)>=35&&t.dragOffset.time<350?(this.option(\"hideClass\")&&(this.getSlide().hideClass=\"fancybox-throwOut\"+(t.content.y<0?\"Up\":\"Down\")),this.close()):\"y\"===t.lockAxis&&t.panTo({y:0})}onTransform(t){if(this.$backdrop){const e=Math.abs(t.content.y),i=e<1?\"\":Math.max(.33,Math.min(1,1-e/t.content.fitHeight*1.5));this.$container.style.setProperty(\"--fancybox-ts\",i?\"0s\":\"\"),this.$container.style.setProperty(\"--fancybox-opacity\",i)}}onMousedown(){\"ready\"===this.state&&document.body.classList.add(\"is-using-mouse\")}onKeydown(t){if(!this.isTopmost())return;document.body.classList.remove(\"is-using-mouse\");const e=t.key,i=this.option(\"keyboard\");if(!i||t.ctrlKey||t.altKey||t.shiftKey)return;const s=t.composedPath()[0],o=document.activeElement&&document.activeElement.classList,n=o&&o.contains(\"carousel__button\");if(\"Escape\"!==e&&!n){if(t.target.isContentEditable||-1!==[\"BUTTON\",\"TEXTAREA\",\"OPTION\",\"INPUT\",\"SELECT\",\"VIDEO\"].indexOf(s.nodeName))return}if(!1===this.trigger(\"keydown\",e,t))return;const a=i[e];\"function\"==typeof this[a]&&this[a]()}getSlide(){const t=this.Carousel;if(!t)return null;const e=null===t.page?t.option(\"initialPage\"):t.page,i=t.pages||[];return i.length&&i[e]?i[e].slides[0]:null}focus(t){if(R.ignoreFocusChange)return;if([\"init\",\"closing\",\"customClosing\",\"destroy\"].indexOf(this.state)>-1)return;const e=this.$container,i=this.getSlide(),s=\"done\"===i.state?i.$el:null;if(s&&s.contains(document.activeElement))return;t&&t.preventDefault(),R.ignoreFocusChange=!0;const o=Array.from(e.querySelectorAll(x));let n,a=[];for(let t of o){const e=t.offsetParent,i=s&&s.contains(t),o=!this.Carousel.$viewport.contains(t);e&&(i||o)?(a.push(t),void 0!==t.dataset.origTabindex&&(t.tabIndex=t.dataset.origTabindex,t.removeAttribute(\"data-orig-tabindex\")),(t.hasAttribute(\"autoFocus\")||!n&&i&&!t.classList.contains(\"carousel__button\"))&&(n=t)):(t.dataset.origTabindex=void 0===t.dataset.origTabindex?t.getAttribute(\"tabindex\"):t.dataset.origTabindex,t.tabIndex=-1)}t?a.indexOf(t.target)>-1?this.lastFocus=t.target:this.lastFocus===e?w(a[a.length-1]):w(e):this.option(\"autoFocus\")&&n?w(n):a.indexOf(document.activeElement)<0&&w(e),this.lastFocus=document.activeElement,R.ignoreFocusChange=!1}hideScrollbar(){if(!v)return;const t=window.innerWidth-document.documentElement.getBoundingClientRect().width,e=\"fancybox-style-noscroll\";let i=document.getElementById(e);i||t>0&&(i=document.createElement(\"style\"),i.id=e,i.type=\"text/css\",i.innerHTML=`.compensate-for-scrollbar {padding-right: ${t}px;}`,document.getElementsByTagName(\"head\")[0].appendChild(i),document.body.classList.add(\"compensate-for-scrollbar\"))}revealScrollbar(){document.body.classList.remove(\"compensate-for-scrollbar\");const t=document.getElementById(\"fancybox-style-noscroll\");t&&t.remove()}clearContent(t){this.Carousel.trigger(\"removeSlide\",t),t.$content&&(t.$content.remove(),t.$content=null),t.$closeButton&&(t.$closeButton.remove(),t.$closeButton=null),t._className&&t.$el.classList.remove(t._className)}setContent(t,e,i={}){let s;const o=t.$el;if(e instanceof HTMLElement)[\"img\",\"iframe\",\"video\",\"audio\"].indexOf(e.nodeName.toLowerCase())>-1?(s=document.createElement(\"div\"),s.appendChild(e)):s=e;else{const t=document.createRange().createContextualFragment(e);s=document.createElement(\"div\"),s.appendChild(t)}if(t.filter&&!t.error&&(s=s.querySelector(t.filter)),s instanceof Element)return t._className=`has-${i.suffix||t.type||\"unknown\"}`,o.classList.add(t._className),s.classList.add(\"fancybox__content\"),\"none\"!==s.style.display&&\"none\"!==getComputedStyle(s).getPropertyValue(\"display\")||(s.style.display=t.display||this.option(\"defaultDisplay\")||\"flex\"),t.id&&s.setAttribute(\"id\",t.id),t.$content=s,o.prepend(s),this.manageCloseButton(t),\"loading\"!==t.state&&this.revealContent(t),s;this.setError(t,\"{{ELEMENT_NOT_FOUND}}\")}manageCloseButton(t){const e=void 0===t.closeButton?this.option(\"closeButton\"):t.closeButton;if(!e||\"top\"===e&&this.$closeButton)return;const i=document.createElement(\"button\");i.classList.add(\"carousel__button\",\"is-close\"),i.setAttribute(\"title\",this.options.l10n.CLOSE),i.innerHTML=this.option(\"template.closeButton\"),i.addEventListener(\"click\",(t=>this.close(t))),\"inside\"===e?(t.$closeButton&&t.$closeButton.remove(),t.$closeButton=t.$content.appendChild(i)):this.$closeButton=this.$container.insertBefore(i,this.$container.firstChild)}revealContent(t){this.trigger(\"reveal\",t),t.$content.style.visibility=\"\";let e=!1;t.error||\"loading\"===t.state||null!==this.Carousel.prevPage||t.index!==this.options.startIndex||(e=void 0===t.showClass?this.option(\"showClass\"):t.showClass),e?(t.state=\"animating\",this.animateCSS(t.$content,e,(()=>{this.done(t)}))):this.done(t)}animateCSS(t,e,i){if(t&&t.dispatchEvent(new CustomEvent(\"animationend\",{bubbles:!0,cancelable:!0})),!t||!e)return void(\"function\"==typeof i&&i());const s=function(o){o.currentTarget===this&&(t.removeEventListener(\"animationend\",s),i&&i(),t.classList.remove(e))};t.addEventListener(\"animationend\",s),t.classList.add(e)}done(t){t.state=\"done\",this.trigger(\"done\",t);const e=this.getSlide();e&&t.index===e.index&&this.option(\"autoFocus\")&&this.focus()}setError(t,e){t.error=e,this.hideLoading(t),this.clearContent(t);const i=document.createElement(\"div\");i.classList.add(\"fancybox-error\"),i.innerHTML=this.localize(e||\"

{{ERROR}}

\"),this.setContent(t,i,{suffix:\"error\"})}showLoading(t){t.state=\"loading\",t.$el.classList.add(\"is-loading\");let e=t.$el.querySelector(\".fancybox__spinner\");e||(e=document.createElement(\"div\"),e.classList.add(\"fancybox__spinner\"),e.innerHTML=this.option(\"template.spinner\"),e.addEventListener(\"click\",(()=>{this.Carousel.Panzoom.velocity||this.close()})),t.$el.prepend(e))}hideLoading(t){const e=t.$el&&t.$el.querySelector(\".fancybox__spinner\");e&&(e.remove(),t.$el.classList.remove(\"is-loading\")),\"loading\"===t.state&&(this.trigger(\"load\",t),t.state=\"ready\")}next(){const t=this.Carousel;t&&t.pages.length>1&&t.slideNext()}prev(){const t=this.Carousel;t&&t.pages.length>1&&t.slidePrev()}jumpTo(...t){this.Carousel&&this.Carousel.slideTo(...t)}isClosing(){return[\"closing\",\"customClosing\",\"destroy\"].includes(this.state)}isTopmost(){return R.getInstance().id==this.id}close(t){if(t&&t.preventDefault(),this.isClosing())return;if(!1===this.trigger(\"shouldClose\",t))return;if(this.state=\"closing\",this.Carousel.Panzoom.destroy(),this.detachEvents(),this.trigger(\"closing\",t),\"destroy\"===this.state)return;this.$container.setAttribute(\"aria-hidden\",\"true\"),this.$container.classList.add(\"is-closing\");const e=this.getSlide();if(this.Carousel.slides.forEach((t=>{t.$content&&t.index!==e.index&&this.Carousel.trigger(\"removeSlide\",t)})),\"closing\"===this.state){const t=void 0===e.hideClass?this.option(\"hideClass\"):e.hideClass;this.animateCSS(e.$content,t,(()=>{this.destroy()}),!0)}}destroy(){if(\"destroy\"===this.state)return;this.state=\"destroy\",this.trigger(\"destroy\");const t=this.option(\"placeFocusBack\")?this.option(\"triggerTarget\",this.getSlide().$trigger):null;this.Carousel.destroy(),this.detachPlugins(),this.Carousel=null,this.options={},this.events={},this.$container.remove(),this.$container=this.$backdrop=this.$carousel=null,t&&w(t),I.delete(this.id);const e=R.getInstance();e?e.focus():(document.documentElement.classList.remove(\"with-fancybox\"),document.body.classList.remove(\"is-using-mouse\"),this.revealScrollbar())}static show(t,e={}){return new R(t,e)}static fromEvent(t,e={}){if(t.defaultPrevented)return;if(t.button&&0!==t.button)return;if(t.ctrlKey||t.metaKey||t.shiftKey)return;const i=t.composedPath()[0];let s,o,n,a=i;if((a.matches(\"[data-fancybox-trigger]\")||(a=a.closest(\"[data-fancybox-trigger]\")))&&(e.triggerTarget=a,s=a&&a.dataset&&a.dataset.fancyboxTrigger),s){const t=document.querySelectorAll(`[data-fancybox=\"${s}\"]`),e=parseInt(a.dataset.fancyboxIndex,10)||0;a=t.length?t[e]:a}Array.from(R.openers.keys()).reverse().some((e=>{n=a||i;let s=!1;try{n instanceof Element&&(\"string\"==typeof e||e instanceof String)&&(s=n.matches(e)||(n=n.closest(e)))}catch(t){}return!!s&&(t.preventDefault(),o=e,!0)}));let r=!1;if(o){e.event=t,e.target=n,n.origTarget=i,r=R.fromOpener(o,e);const s=R.getInstance();s&&\"ready\"===s.state&&t.detail&&document.body.classList.add(\"is-using-mouse\")}return r}static fromOpener(t,i={}){let s=[],o=i.startIndex||0,n=i.target||null;const a=void 0!==(i=e({},i,R.openers.get(t))).groupAll&&i.groupAll,r=void 0===i.groupAttr?\"data-fancybox\":i.groupAttr,h=r&&n?n.getAttribute(`${r}`):\"\";if(!n||h||a){const e=i.root||(n?n.getRootNode():document.body);s=[].slice.call(e.querySelectorAll(t))}if(n&&!a&&(s=h?s.filter((t=>t.getAttribute(`${r}`)===h)):[n]),!s.length)return!1;const l=R.getInstance();return!(l&&s.indexOf(l.options.$trigger)>-1)&&(o=n?s.indexOf(n):o,s=s.map((function(t){const e=[\"false\",\"0\",\"no\",\"null\",\"undefined\"],i=[\"true\",\"1\",\"yes\"],s=Object.assign({},t.dataset),o={};for(let[t,n]of Object.entries(s))if(\"fancybox\"!==t)if(\"width\"===t||\"height\"===t)o[`_${t}`]=n;else if(\"string\"==typeof n||n instanceof String)if(e.indexOf(n)>-1)o[t]=!1;else if(i.indexOf(o[t])>-1)o[t]=!0;else try{o[t]=JSON.parse(n)}catch(e){o[t]=n}else o[t]=n;return t instanceof Element&&(o.$trigger=t),o})),new R(s,e({},i,{startIndex:o,$trigger:n})))}static bind(t,e={}){function i(){document.body.addEventListener(\"click\",R.fromEvent,!1)}v&&(R.openers.size||(/complete|interactive|loaded/.test(document.readyState)?i():document.addEventListener(\"DOMContentLoaded\",i)),R.openers.set(t,e))}static unbind(t){R.openers.delete(t),R.openers.size||R.destroy()}static destroy(){let t;for(;t=R.getInstance();)t.destroy();R.openers=new Map,document.body.removeEventListener(\"click\",R.fromEvent,!1)}static getInstance(t){if(t)return I.get(t);return Array.from(I.values()).reverse().find((t=>!t.isClosing()&&t))||null}static close(t=!0,e){if(t)for(const t of I.values())t.close(e);else{const t=R.getInstance();t&&t.close(e)}}static next(){const t=R.getInstance();t&&t.next()}static prev(){const t=R.getInstance();t&&t.prev()}}R.version=\"4.0.31\",R.defaults=M,R.openers=new Map,R.Plugins=O,R.bind(\"[data-fancybox]\");for(const[t,e]of Object.entries(R.Plugins||{}))\"function\"==typeof e.create&&e.create(R);export{y as Carousel,R as Fancybox,d as Panzoom};\n","import window from 'global/window'; // const log2 = Math.log2 ? Math.log2 : (x) => (Math.log(x) / Math.log(2));\n\nvar repeat = function repeat(str, len) {\n var acc = '';\n\n while (len--) {\n acc += str;\n }\n\n return acc;\n}; // count the number of bits it would take to represent a number\n// we used to do this with log2 but BigInt does not support builtin math\n// Math.ceil(log2(x));\n\n\nexport var countBits = function countBits(x) {\n return x.toString(2).length;\n}; // count the number of whole bytes it would take to represent a number\n\nexport var countBytes = function countBytes(x) {\n return Math.ceil(countBits(x) / 8);\n};\nexport var padStart = function padStart(b, len, str) {\n if (str === void 0) {\n str = ' ';\n }\n\n return (repeat(str, len) + b.toString()).slice(-len);\n};\nexport var isArrayBufferView = function isArrayBufferView(obj) {\n if (ArrayBuffer.isView === 'function') {\n return ArrayBuffer.isView(obj);\n }\n\n return obj && obj.buffer instanceof ArrayBuffer;\n};\nexport var isTypedArray = function isTypedArray(obj) {\n return isArrayBufferView(obj);\n};\nexport var toUint8 = function toUint8(bytes) {\n if (bytes instanceof Uint8Array) {\n return bytes;\n }\n\n if (!Array.isArray(bytes) && !isTypedArray(bytes) && !(bytes instanceof ArrayBuffer)) {\n // any non-number or NaN leads to empty uint8array\n // eslint-disable-next-line\n if (typeof bytes !== 'number' || typeof bytes === 'number' && bytes !== bytes) {\n bytes = 0;\n } else {\n bytes = [bytes];\n }\n }\n\n return new Uint8Array(bytes && bytes.buffer || bytes, bytes && bytes.byteOffset || 0, bytes && bytes.byteLength || 0);\n};\nexport var toHexString = function toHexString(bytes) {\n bytes = toUint8(bytes);\n var str = '';\n\n for (var i = 0; i < bytes.length; i++) {\n str += padStart(bytes[i].toString(16), 2, '0');\n }\n\n return str;\n};\nexport var toBinaryString = function toBinaryString(bytes) {\n bytes = toUint8(bytes);\n var str = '';\n\n for (var i = 0; i < bytes.length; i++) {\n str += padStart(bytes[i].toString(2), 8, '0');\n }\n\n return str;\n};\nvar BigInt = window.BigInt || Number;\nvar BYTE_TABLE = [BigInt('0x1'), BigInt('0x100'), BigInt('0x10000'), BigInt('0x1000000'), BigInt('0x100000000'), BigInt('0x10000000000'), BigInt('0x1000000000000'), BigInt('0x100000000000000'), BigInt('0x10000000000000000')];\nexport var ENDIANNESS = function () {\n var a = new Uint16Array([0xFFCC]);\n var b = new Uint8Array(a.buffer, a.byteOffset, a.byteLength);\n\n if (b[0] === 0xFF) {\n return 'big';\n }\n\n if (b[0] === 0xCC) {\n return 'little';\n }\n\n return 'unknown';\n}();\nexport var IS_BIG_ENDIAN = ENDIANNESS === 'big';\nexport var IS_LITTLE_ENDIAN = ENDIANNESS === 'little';\nexport var bytesToNumber = function bytesToNumber(bytes, _temp) {\n var _ref = _temp === void 0 ? {} : _temp,\n _ref$signed = _ref.signed,\n signed = _ref$signed === void 0 ? false : _ref$signed,\n _ref$le = _ref.le,\n le = _ref$le === void 0 ? false : _ref$le;\n\n bytes = toUint8(bytes);\n var fn = le ? 'reduce' : 'reduceRight';\n var obj = bytes[fn] ? bytes[fn] : Array.prototype[fn];\n var number = obj.call(bytes, function (total, byte, i) {\n var exponent = le ? i : Math.abs(i + 1 - bytes.length);\n return total + BigInt(byte) * BYTE_TABLE[exponent];\n }, BigInt(0));\n\n if (signed) {\n var max = BYTE_TABLE[bytes.length] / BigInt(2) - BigInt(1);\n number = BigInt(number);\n\n if (number > max) {\n number -= max;\n number -= max;\n number -= BigInt(2);\n }\n }\n\n return Number(number);\n};\nexport var numberToBytes = function numberToBytes(number, _temp2) {\n var _ref2 = _temp2 === void 0 ? {} : _temp2,\n _ref2$le = _ref2.le,\n le = _ref2$le === void 0 ? false : _ref2$le;\n\n // eslint-disable-next-line\n if (typeof number !== 'bigint' && typeof number !== 'number' || typeof number === 'number' && number !== number) {\n number = 0;\n }\n\n number = BigInt(number);\n var byteCount = countBytes(number);\n var bytes = new Uint8Array(new ArrayBuffer(byteCount));\n\n for (var i = 0; i < byteCount; i++) {\n var byteIndex = le ? i : Math.abs(i + 1 - bytes.length);\n bytes[byteIndex] = Number(number / BYTE_TABLE[i] & BigInt(0xFF));\n\n if (number < 0) {\n bytes[byteIndex] = Math.abs(~bytes[byteIndex]);\n bytes[byteIndex] -= i === 0 ? 1 : 2;\n }\n }\n\n return bytes;\n};\nexport var bytesToString = function bytesToString(bytes) {\n if (!bytes) {\n return '';\n } // TODO: should toUint8 handle cases where we only have 8 bytes\n // but report more since this is a Uint16+ Array?\n\n\n bytes = Array.prototype.slice.call(bytes);\n var string = String.fromCharCode.apply(null, toUint8(bytes));\n\n try {\n return decodeURIComponent(escape(string));\n } catch (e) {// if decodeURIComponent/escape fails, we are dealing with partial\n // or full non string data. Just return the potentially garbled string.\n }\n\n return string;\n};\nexport var stringToBytes = function stringToBytes(string, stringIsBytes) {\n if (typeof string !== 'string' && string && typeof string.toString === 'function') {\n string = string.toString();\n }\n\n if (typeof string !== 'string') {\n return new Uint8Array();\n } // If the string already is bytes, we don't have to do this\n // otherwise we do this so that we split multi length characters\n // into individual bytes\n\n\n if (!stringIsBytes) {\n string = unescape(encodeURIComponent(string));\n }\n\n var view = new Uint8Array(string.length);\n\n for (var i = 0; i < string.length; i++) {\n view[i] = string.charCodeAt(i);\n }\n\n return view;\n};\nexport var concatTypedArrays = function concatTypedArrays() {\n for (var _len = arguments.length, buffers = new Array(_len), _key = 0; _key < _len; _key++) {\n buffers[_key] = arguments[_key];\n }\n\n buffers = buffers.filter(function (b) {\n return b && (b.byteLength || b.length) && typeof b !== 'string';\n });\n\n if (buffers.length <= 1) {\n // for 0 length we will return empty uint8\n // for 1 length we return the first uint8\n return toUint8(buffers[0]);\n }\n\n var totalLen = buffers.reduce(function (total, buf, i) {\n return total + (buf.byteLength || buf.length);\n }, 0);\n var tempBuffer = new Uint8Array(totalLen);\n var offset = 0;\n buffers.forEach(function (buf) {\n buf = toUint8(buf);\n tempBuffer.set(buf, offset);\n offset += buf.byteLength;\n });\n return tempBuffer;\n};\n/**\n * Check if the bytes \"b\" are contained within bytes \"a\".\n *\n * @param {Uint8Array|Array} a\n * Bytes to check in\n *\n * @param {Uint8Array|Array} b\n * Bytes to check for\n *\n * @param {Object} options\n * options\n *\n * @param {Array|Uint8Array} [offset=0]\n * offset to use when looking at bytes in a\n *\n * @param {Array|Uint8Array} [mask=[]]\n * mask to use on bytes before comparison.\n *\n * @return {boolean}\n * If all bytes in b are inside of a, taking into account\n * bit masks.\n */\n\nexport var bytesMatch = function bytesMatch(a, b, _temp3) {\n var _ref3 = _temp3 === void 0 ? {} : _temp3,\n _ref3$offset = _ref3.offset,\n offset = _ref3$offset === void 0 ? 0 : _ref3$offset,\n _ref3$mask = _ref3.mask,\n mask = _ref3$mask === void 0 ? [] : _ref3$mask;\n\n a = toUint8(a);\n b = toUint8(b); // ie 11 does not support uint8 every\n\n var fn = b.every ? b.every : Array.prototype.every;\n return b.length && a.length - offset >= b.length && // ie 11 doesn't support every on uin8\n fn.call(b, function (bByte, i) {\n var aByte = mask[i] ? mask[i] & a[offset + i] : a[offset + i];\n return bByte === aByte;\n });\n};\nexport var sliceBytes = function sliceBytes(src, start, end) {\n if (Uint8Array.prototype.slice) {\n return Uint8Array.prototype.slice.call(src, start, end);\n }\n\n return new Uint8Array(Array.prototype.slice.call(src, start, end));\n};\nexport var reverseBytes = function reverseBytes(src) {\n if (src.reverse) {\n return src.reverse();\n }\n\n return Array.prototype.reverse.call(src);\n};","import { padStart, toHexString, toBinaryString } from './byte-helpers.js'; // https://aomediacodec.github.io/av1-isobmff/#av1codecconfigurationbox-syntax\n// https://developer.mozilla.org/en-US/docs/Web/Media/Formats/codecs_parameter#AV1\n\nexport var getAv1Codec = function getAv1Codec(bytes) {\n var codec = '';\n var profile = bytes[1] >>> 3;\n var level = bytes[1] & 0x1F;\n var tier = bytes[2] >>> 7;\n var highBitDepth = (bytes[2] & 0x40) >> 6;\n var twelveBit = (bytes[2] & 0x20) >> 5;\n var monochrome = (bytes[2] & 0x10) >> 4;\n var chromaSubsamplingX = (bytes[2] & 0x08) >> 3;\n var chromaSubsamplingY = (bytes[2] & 0x04) >> 2;\n var chromaSamplePosition = bytes[2] & 0x03;\n codec += profile + \".\" + padStart(level, 2, '0');\n\n if (tier === 0) {\n codec += 'M';\n } else if (tier === 1) {\n codec += 'H';\n }\n\n var bitDepth;\n\n if (profile === 2 && highBitDepth) {\n bitDepth = twelveBit ? 12 : 10;\n } else {\n bitDepth = highBitDepth ? 10 : 8;\n }\n\n codec += \".\" + padStart(bitDepth, 2, '0'); // TODO: can we parse color range??\n\n codec += \".\" + monochrome;\n codec += \".\" + chromaSubsamplingX + chromaSubsamplingY + chromaSamplePosition;\n return codec;\n};\nexport var getAvcCodec = function getAvcCodec(bytes) {\n var profileId = toHexString(bytes[1]);\n var constraintFlags = toHexString(bytes[2] & 0xFC);\n var levelId = toHexString(bytes[3]);\n return \"\" + profileId + constraintFlags + levelId;\n};\nexport var getHvcCodec = function getHvcCodec(bytes) {\n var codec = '';\n var profileSpace = bytes[1] >> 6;\n var profileId = bytes[1] & 0x1F;\n var tierFlag = (bytes[1] & 0x20) >> 5;\n var profileCompat = bytes.subarray(2, 6);\n var constraintIds = bytes.subarray(6, 12);\n var levelId = bytes[12];\n\n if (profileSpace === 1) {\n codec += 'A';\n } else if (profileSpace === 2) {\n codec += 'B';\n } else if (profileSpace === 3) {\n codec += 'C';\n }\n\n codec += profileId + \".\"; // ffmpeg does this in big endian\n\n var profileCompatVal = parseInt(toBinaryString(profileCompat).split('').reverse().join(''), 2); // apple does this in little endian...\n\n if (profileCompatVal > 255) {\n profileCompatVal = parseInt(toBinaryString(profileCompat), 2);\n }\n\n codec += profileCompatVal.toString(16) + \".\";\n\n if (tierFlag === 0) {\n codec += 'L';\n } else {\n codec += 'H';\n }\n\n codec += levelId;\n var constraints = '';\n\n for (var i = 0; i < constraintIds.length; i++) {\n var v = constraintIds[i];\n\n if (v) {\n if (constraints) {\n constraints += '.';\n }\n\n constraints += v.toString(16);\n }\n }\n\n if (constraints) {\n codec += \".\" + constraints;\n }\n\n return codec;\n};","import window from 'global/window';\nvar regexs = {\n // to determine mime types\n mp4: /^(av0?1|avc0?[1234]|vp0?9|flac|opus|mp3|mp4a|mp4v|stpp.ttml.im1t)/,\n webm: /^(vp0?[89]|av0?1|opus|vorbis)/,\n ogg: /^(vp0?[89]|theora|flac|opus|vorbis)/,\n // to determine if a codec is audio or video\n video: /^(av0?1|avc0?[1234]|vp0?[89]|hvc1|hev1|theora|mp4v)/,\n audio: /^(mp4a|flac|vorbis|opus|ac-[34]|ec-3|alac|mp3|speex|aac)/,\n text: /^(stpp.ttml.im1t)/,\n // mux.js support regex\n muxerVideo: /^(avc0?1)/,\n muxerAudio: /^(mp4a)/,\n // match nothing as muxer does not support text right now.\n // there cannot never be a character before the start of a string\n // so this matches nothing.\n muxerText: /a^/\n};\nvar mediaTypes = ['video', 'audio', 'text'];\nvar upperMediaTypes = ['Video', 'Audio', 'Text'];\n/**\n * Replace the old apple-style `avc1.
.
` codec string with the standard\n * `avc1.`\n *\n * @param {string} codec\n * Codec string to translate\n * @return {string}\n * The translated codec string\n */\n\nexport var translateLegacyCodec = function translateLegacyCodec(codec) {\n if (!codec) {\n return codec;\n }\n\n return codec.replace(/avc1\\.(\\d+)\\.(\\d+)/i, function (orig, profile, avcLevel) {\n var profileHex = ('00' + Number(profile).toString(16)).slice(-2);\n var avcLevelHex = ('00' + Number(avcLevel).toString(16)).slice(-2);\n return 'avc1.' + profileHex + '00' + avcLevelHex;\n });\n};\n/**\n * Replace the old apple-style `avc1.
.
` codec strings with the standard\n * `avc1.`\n *\n * @param {string[]} codecs\n * An array of codec strings to translate\n * @return {string[]}\n * The translated array of codec strings\n */\n\nexport var translateLegacyCodecs = function translateLegacyCodecs(codecs) {\n return codecs.map(translateLegacyCodec);\n};\n/**\n * Replace codecs in the codec string with the old apple-style `avc1.
.
` to the\n * standard `avc1.`.\n *\n * @param {string} codecString\n * The codec string\n * @return {string}\n * The codec string with old apple-style codecs replaced\n *\n * @private\n */\n\nexport var mapLegacyAvcCodecs = function mapLegacyAvcCodecs(codecString) {\n return codecString.replace(/avc1\\.(\\d+)\\.(\\d+)/i, function (match) {\n return translateLegacyCodecs([match])[0];\n });\n};\n/**\n * @typedef {Object} ParsedCodecInfo\n * @property {number} codecCount\n * Number of codecs parsed\n * @property {string} [videoCodec]\n * Parsed video codec (if found)\n * @property {string} [videoObjectTypeIndicator]\n * Video object type indicator (if found)\n * @property {string|null} audioProfile\n * Audio profile\n */\n\n/**\n * Parses a codec string to retrieve the number of codecs specified, the video codec and\n * object type indicator, and the audio profile.\n *\n * @param {string} [codecString]\n * The codec string to parse\n * @return {ParsedCodecInfo}\n * Parsed codec info\n */\n\nexport var parseCodecs = function parseCodecs(codecString) {\n if (codecString === void 0) {\n codecString = '';\n }\n\n var codecs = codecString.split(',');\n var result = [];\n codecs.forEach(function (codec) {\n codec = codec.trim();\n var codecType;\n mediaTypes.forEach(function (name) {\n var match = regexs[name].exec(codec.toLowerCase());\n\n if (!match || match.length <= 1) {\n return;\n }\n\n codecType = name; // maintain codec case\n\n var type = codec.substring(0, match[1].length);\n var details = codec.replace(type, '');\n result.push({\n type: type,\n details: details,\n mediaType: name\n });\n });\n\n if (!codecType) {\n result.push({\n type: codec,\n details: '',\n mediaType: 'unknown'\n });\n }\n });\n return result;\n};\n/**\n * Returns a ParsedCodecInfo object for the default alternate audio playlist if there is\n * a default alternate audio playlist for the provided audio group.\n *\n * @param {Object} master\n * The master playlist\n * @param {string} audioGroupId\n * ID of the audio group for which to find the default codec info\n * @return {ParsedCodecInfo}\n * Parsed codec info\n */\n\nexport var codecsFromDefault = function codecsFromDefault(master, audioGroupId) {\n if (!master.mediaGroups.AUDIO || !audioGroupId) {\n return null;\n }\n\n var audioGroup = master.mediaGroups.AUDIO[audioGroupId];\n\n if (!audioGroup) {\n return null;\n }\n\n for (var name in audioGroup) {\n var audioType = audioGroup[name];\n\n if (audioType.default && audioType.playlists) {\n // codec should be the same for all playlists within the audio type\n return parseCodecs(audioType.playlists[0].attributes.CODECS);\n }\n }\n\n return null;\n};\nexport var isVideoCodec = function isVideoCodec(codec) {\n if (codec === void 0) {\n codec = '';\n }\n\n return regexs.video.test(codec.trim().toLowerCase());\n};\nexport var isAudioCodec = function isAudioCodec(codec) {\n if (codec === void 0) {\n codec = '';\n }\n\n return regexs.audio.test(codec.trim().toLowerCase());\n};\nexport var isTextCodec = function isTextCodec(codec) {\n if (codec === void 0) {\n codec = '';\n }\n\n return regexs.text.test(codec.trim().toLowerCase());\n};\nexport var getMimeForCodec = function getMimeForCodec(codecString) {\n if (!codecString || typeof codecString !== 'string') {\n return;\n }\n\n var codecs = codecString.toLowerCase().split(',').map(function (c) {\n return translateLegacyCodec(c.trim());\n }); // default to video type\n\n var type = 'video'; // only change to audio type if the only codec we have is\n // audio\n\n if (codecs.length === 1 && isAudioCodec(codecs[0])) {\n type = 'audio';\n } else if (codecs.length === 1 && isTextCodec(codecs[0])) {\n // text uses application/ for now\n type = 'application';\n } // default the container to mp4\n\n\n var container = 'mp4'; // every codec must be able to go into the container\n // for that container to be the correct one\n\n if (codecs.every(function (c) {\n return regexs.mp4.test(c);\n })) {\n container = 'mp4';\n } else if (codecs.every(function (c) {\n return regexs.webm.test(c);\n })) {\n container = 'webm';\n } else if (codecs.every(function (c) {\n return regexs.ogg.test(c);\n })) {\n container = 'ogg';\n }\n\n return type + \"/\" + container + \";codecs=\\\"\" + codecString + \"\\\"\";\n};\nexport var browserSupportsCodec = function browserSupportsCodec(codecString) {\n if (codecString === void 0) {\n codecString = '';\n }\n\n return window.MediaSource && window.MediaSource.isTypeSupported && window.MediaSource.isTypeSupported(getMimeForCodec(codecString)) || false;\n};\nexport var muxerSupportsCodec = function muxerSupportsCodec(codecString) {\n if (codecString === void 0) {\n codecString = '';\n }\n\n return codecString.toLowerCase().split(',').every(function (codec) {\n codec = codec.trim(); // any match is supported.\n\n for (var i = 0; i < upperMediaTypes.length; i++) {\n var type = upperMediaTypes[i];\n\n if (regexs[\"muxer\" + type].test(codec)) {\n return true;\n }\n }\n\n return false;\n });\n};\nexport var DEFAULT_AUDIO_CODEC = 'mp4a.40.2';\nexport var DEFAULT_VIDEO_CODEC = 'avc1.4d400d';","import { toUint8, bytesMatch } from './byte-helpers.js';\nimport { findBox } from './mp4-helpers.js';\nimport { findEbml, EBML_TAGS } from './ebml-helpers.js';\nimport { getId3Offset } from './id3-helpers.js';\nimport { findH264Nal, findH265Nal } from './nal-helpers.js';\nvar CONSTANTS = {\n // \"webm\" string literal in hex\n 'webm': toUint8([0x77, 0x65, 0x62, 0x6d]),\n // \"matroska\" string literal in hex\n 'matroska': toUint8([0x6d, 0x61, 0x74, 0x72, 0x6f, 0x73, 0x6b, 0x61]),\n // \"fLaC\" string literal in hex\n 'flac': toUint8([0x66, 0x4c, 0x61, 0x43]),\n // \"OggS\" string literal in hex\n 'ogg': toUint8([0x4f, 0x67, 0x67, 0x53]),\n // ac-3 sync byte, also works for ec-3 as that is simply a codec\n // of ac-3\n 'ac3': toUint8([0x0b, 0x77]),\n // \"RIFF\" string literal in hex used for wav and avi\n 'riff': toUint8([0x52, 0x49, 0x46, 0x46]),\n // \"AVI\" string literal in hex\n 'avi': toUint8([0x41, 0x56, 0x49]),\n // \"WAVE\" string literal in hex\n 'wav': toUint8([0x57, 0x41, 0x56, 0x45]),\n // \"ftyp3g\" string literal in hex\n '3gp': toUint8([0x66, 0x74, 0x79, 0x70, 0x33, 0x67]),\n // \"ftyp\" string literal in hex\n 'mp4': toUint8([0x66, 0x74, 0x79, 0x70]),\n // \"styp\" string literal in hex\n 'fmp4': toUint8([0x73, 0x74, 0x79, 0x70]),\n // \"ftypqt\" string literal in hex\n 'mov': toUint8([0x66, 0x74, 0x79, 0x70, 0x71, 0x74]),\n // moov string literal in hex\n 'moov': toUint8([0x6D, 0x6F, 0x6F, 0x76]),\n // moof string literal in hex\n 'moof': toUint8([0x6D, 0x6F, 0x6F, 0x66])\n};\nvar _isLikely = {\n aac: function aac(bytes) {\n var offset = getId3Offset(bytes);\n return bytesMatch(bytes, [0xFF, 0x10], {\n offset: offset,\n mask: [0xFF, 0x16]\n });\n },\n mp3: function mp3(bytes) {\n var offset = getId3Offset(bytes);\n return bytesMatch(bytes, [0xFF, 0x02], {\n offset: offset,\n mask: [0xFF, 0x06]\n });\n },\n webm: function webm(bytes) {\n var docType = findEbml(bytes, [EBML_TAGS.EBML, EBML_TAGS.DocType])[0]; // check if DocType EBML tag is webm\n\n return bytesMatch(docType, CONSTANTS.webm);\n },\n mkv: function mkv(bytes) {\n var docType = findEbml(bytes, [EBML_TAGS.EBML, EBML_TAGS.DocType])[0]; // check if DocType EBML tag is matroska\n\n return bytesMatch(docType, CONSTANTS.matroska);\n },\n mp4: function mp4(bytes) {\n // if this file is another base media file format, it is not mp4\n if (_isLikely['3gp'](bytes) || _isLikely.mov(bytes)) {\n return false;\n } // if this file starts with a ftyp or styp box its mp4\n\n\n if (bytesMatch(bytes, CONSTANTS.mp4, {\n offset: 4\n }) || bytesMatch(bytes, CONSTANTS.fmp4, {\n offset: 4\n })) {\n return true;\n } // if this file starts with a moof/moov box its mp4\n\n\n if (bytesMatch(bytes, CONSTANTS.moof, {\n offset: 4\n }) || bytesMatch(bytes, CONSTANTS.moov, {\n offset: 4\n })) {\n return true;\n }\n },\n mov: function mov(bytes) {\n return bytesMatch(bytes, CONSTANTS.mov, {\n offset: 4\n });\n },\n '3gp': function gp(bytes) {\n return bytesMatch(bytes, CONSTANTS['3gp'], {\n offset: 4\n });\n },\n ac3: function ac3(bytes) {\n var offset = getId3Offset(bytes);\n return bytesMatch(bytes, CONSTANTS.ac3, {\n offset: offset\n });\n },\n ts: function ts(bytes) {\n if (bytes.length < 189 && bytes.length >= 1) {\n return bytes[0] === 0x47;\n }\n\n var i = 0; // check the first 376 bytes for two matching sync bytes\n\n while (i + 188 < bytes.length && i < 188) {\n if (bytes[i] === 0x47 && bytes[i + 188] === 0x47) {\n return true;\n }\n\n i += 1;\n }\n\n return false;\n },\n flac: function flac(bytes) {\n var offset = getId3Offset(bytes);\n return bytesMatch(bytes, CONSTANTS.flac, {\n offset: offset\n });\n },\n ogg: function ogg(bytes) {\n return bytesMatch(bytes, CONSTANTS.ogg);\n },\n avi: function avi(bytes) {\n return bytesMatch(bytes, CONSTANTS.riff) && bytesMatch(bytes, CONSTANTS.avi, {\n offset: 8\n });\n },\n wav: function wav(bytes) {\n return bytesMatch(bytes, CONSTANTS.riff) && bytesMatch(bytes, CONSTANTS.wav, {\n offset: 8\n });\n },\n 'h264': function h264(bytes) {\n // find seq_parameter_set_rbsp\n return findH264Nal(bytes, 7, 3).length;\n },\n 'h265': function h265(bytes) {\n // find video_parameter_set_rbsp or seq_parameter_set_rbsp\n return findH265Nal(bytes, [32, 33], 3).length;\n }\n}; // get all the isLikely functions\n// but make sure 'ts' is above h264 and h265\n// but below everything else as it is the least specific\n\nvar isLikelyTypes = Object.keys(_isLikely) // remove ts, h264, h265\n.filter(function (t) {\n return t !== 'ts' && t !== 'h264' && t !== 'h265';\n}) // add it back to the bottom\n.concat(['ts', 'h264', 'h265']); // make sure we are dealing with uint8 data.\n\nisLikelyTypes.forEach(function (type) {\n var isLikelyFn = _isLikely[type];\n\n _isLikely[type] = function (bytes) {\n return isLikelyFn(toUint8(bytes));\n };\n}); // export after wrapping\n\nexport var isLikely = _isLikely; // A useful list of file signatures can be found here\n// https://en.wikipedia.org/wiki/List_of_file_signatures\n\nexport var detectContainerForBytes = function detectContainerForBytes(bytes) {\n bytes = toUint8(bytes);\n\n for (var i = 0; i < isLikelyTypes.length; i++) {\n var type = isLikelyTypes[i];\n\n if (isLikely[type](bytes)) {\n return type;\n }\n }\n\n return '';\n}; // fmp4 is not a container\n\nexport var isLikelyFmp4MediaSegment = function isLikelyFmp4MediaSegment(bytes) {\n return findBox(bytes, ['moof']).length > 0;\n};","import { toUint8, bytesToNumber, bytesMatch, bytesToString, numberToBytes, padStart } from './byte-helpers';\nimport { getAvcCodec, getHvcCodec, getAv1Codec } from './codec-helpers.js'; // relevant specs for this parser:\n// https://matroska-org.github.io/libebml/specs.html\n// https://www.matroska.org/technical/elements.html\n// https://www.webmproject.org/docs/container/\n\nexport var EBML_TAGS = {\n EBML: toUint8([0x1A, 0x45, 0xDF, 0xA3]),\n DocType: toUint8([0x42, 0x82]),\n Segment: toUint8([0x18, 0x53, 0x80, 0x67]),\n SegmentInfo: toUint8([0x15, 0x49, 0xA9, 0x66]),\n Tracks: toUint8([0x16, 0x54, 0xAE, 0x6B]),\n Track: toUint8([0xAE]),\n TrackNumber: toUint8([0xd7]),\n DefaultDuration: toUint8([0x23, 0xe3, 0x83]),\n TrackEntry: toUint8([0xAE]),\n TrackType: toUint8([0x83]),\n FlagDefault: toUint8([0x88]),\n CodecID: toUint8([0x86]),\n CodecPrivate: toUint8([0x63, 0xA2]),\n VideoTrack: toUint8([0xe0]),\n AudioTrack: toUint8([0xe1]),\n // Not used yet, but will be used for live webm/mkv\n // see https://www.matroska.org/technical/basics.html#block-structure\n // see https://www.matroska.org/technical/basics.html#simpleblock-structure\n Cluster: toUint8([0x1F, 0x43, 0xB6, 0x75]),\n Timestamp: toUint8([0xE7]),\n TimestampScale: toUint8([0x2A, 0xD7, 0xB1]),\n BlockGroup: toUint8([0xA0]),\n BlockDuration: toUint8([0x9B]),\n Block: toUint8([0xA1]),\n SimpleBlock: toUint8([0xA3])\n};\n/**\n * This is a simple table to determine the length\n * of things in ebml. The length is one based (starts at 1,\n * rather than zero) and for every zero bit before a one bit\n * we add one to length. We also need this table because in some\n * case we have to xor all the length bits from another value.\n */\n\nvar LENGTH_TABLE = [128, 64, 32, 16, 8, 4, 2, 1];\n\nvar getLength = function getLength(byte) {\n var len = 1;\n\n for (var i = 0; i < LENGTH_TABLE.length; i++) {\n if (byte & LENGTH_TABLE[i]) {\n break;\n }\n\n len++;\n }\n\n return len;\n}; // length in ebml is stored in the first 4 to 8 bits\n// of the first byte. 4 for the id length and 8 for the\n// data size length. Length is measured by converting the number to binary\n// then 1 + the number of zeros before a 1 is encountered starting\n// from the left.\n\n\nvar getvint = function getvint(bytes, offset, removeLength, signed) {\n if (removeLength === void 0) {\n removeLength = true;\n }\n\n if (signed === void 0) {\n signed = false;\n }\n\n var length = getLength(bytes[offset]);\n var valueBytes = bytes.subarray(offset, offset + length); // NOTE that we do **not** subarray here because we need to copy these bytes\n // as they will be modified below to remove the dataSizeLen bits and we do not\n // want to modify the original data. normally we could just call slice on\n // uint8array but ie 11 does not support that...\n\n if (removeLength) {\n valueBytes = Array.prototype.slice.call(bytes, offset, offset + length);\n valueBytes[0] ^= LENGTH_TABLE[length - 1];\n }\n\n return {\n length: length,\n value: bytesToNumber(valueBytes, {\n signed: signed\n }),\n bytes: valueBytes\n };\n};\n\nvar normalizePath = function normalizePath(path) {\n if (typeof path === 'string') {\n return path.match(/.{1,2}/g).map(function (p) {\n return normalizePath(p);\n });\n }\n\n if (typeof path === 'number') {\n return numberToBytes(path);\n }\n\n return path;\n};\n\nvar normalizePaths = function normalizePaths(paths) {\n if (!Array.isArray(paths)) {\n return [normalizePath(paths)];\n }\n\n return paths.map(function (p) {\n return normalizePath(p);\n });\n};\n\nvar getInfinityDataSize = function getInfinityDataSize(id, bytes, offset) {\n if (offset >= bytes.length) {\n return bytes.length;\n }\n\n var innerid = getvint(bytes, offset, false);\n\n if (bytesMatch(id.bytes, innerid.bytes)) {\n return offset;\n }\n\n var dataHeader = getvint(bytes, offset + innerid.length);\n return getInfinityDataSize(id, bytes, offset + dataHeader.length + dataHeader.value + innerid.length);\n};\n/**\n * Notes on the EBLM format.\n *\n * EBLM uses \"vints\" tags. Every vint tag contains\n * two parts\n *\n * 1. The length from the first byte. You get this by\n * converting the byte to binary and counting the zeros\n * before a 1. Then you add 1 to that. Examples\n * 00011111 = length 4 because there are 3 zeros before a 1.\n * 00100000 = length 3 because there are 2 zeros before a 1.\n * 00000011 = length 7 because there are 6 zeros before a 1.\n *\n * 2. The bits used for length are removed from the first byte\n * Then all the bytes are merged into a value. NOTE: this\n * is not the case for id ebml tags as there id includes\n * length bits.\n *\n */\n\n\nexport var findEbml = function findEbml(bytes, paths) {\n paths = normalizePaths(paths);\n bytes = toUint8(bytes);\n var results = [];\n\n if (!paths.length) {\n return results;\n }\n\n var i = 0;\n\n while (i < bytes.length) {\n var id = getvint(bytes, i, false);\n var dataHeader = getvint(bytes, i + id.length);\n var dataStart = i + id.length + dataHeader.length; // dataSize is unknown or this is a live stream\n\n if (dataHeader.value === 0x7f) {\n dataHeader.value = getInfinityDataSize(id, bytes, dataStart);\n\n if (dataHeader.value !== bytes.length) {\n dataHeader.value -= dataStart;\n }\n }\n\n var dataEnd = dataStart + dataHeader.value > bytes.length ? bytes.length : dataStart + dataHeader.value;\n var data = bytes.subarray(dataStart, dataEnd);\n\n if (bytesMatch(paths[0], id.bytes)) {\n if (paths.length === 1) {\n // this is the end of the paths and we've found the tag we were\n // looking for\n results.push(data);\n } else {\n // recursively search for the next tag inside of the data\n // of this one\n results = results.concat(findEbml(data, paths.slice(1)));\n }\n }\n\n var totalLength = id.length + dataHeader.length + data.length; // move past this tag entirely, we are not looking for it\n\n i += totalLength;\n }\n\n return results;\n}; // see https://www.matroska.org/technical/basics.html#block-structure\n\nexport var decodeBlock = function decodeBlock(block, type, timestampScale, clusterTimestamp) {\n var duration;\n\n if (type === 'group') {\n duration = findEbml(block, [EBML_TAGS.BlockDuration])[0];\n\n if (duration) {\n duration = bytesToNumber(duration);\n duration = 1 / timestampScale * duration * timestampScale / 1000;\n }\n\n block = findEbml(block, [EBML_TAGS.Block])[0];\n type = 'block'; // treat data as a block after this point\n }\n\n var dv = new DataView(block.buffer, block.byteOffset, block.byteLength);\n var trackNumber = getvint(block, 0);\n var timestamp = dv.getInt16(trackNumber.length, false);\n var flags = block[trackNumber.length + 2];\n var data = block.subarray(trackNumber.length + 3); // pts/dts in seconds\n\n var ptsdts = 1 / timestampScale * (clusterTimestamp + timestamp) * timestampScale / 1000; // return the frame\n\n var parsed = {\n duration: duration,\n trackNumber: trackNumber.value,\n keyframe: type === 'simple' && flags >> 7 === 1,\n invisible: (flags & 0x08) >> 3 === 1,\n lacing: (flags & 0x06) >> 1,\n discardable: type === 'simple' && (flags & 0x01) === 1,\n frames: [],\n pts: ptsdts,\n dts: ptsdts,\n timestamp: timestamp\n };\n\n if (!parsed.lacing) {\n parsed.frames.push(data);\n return parsed;\n }\n\n var numberOfFrames = data[0] + 1;\n var frameSizes = [];\n var offset = 1; // Fixed\n\n if (parsed.lacing === 2) {\n var sizeOfFrame = (data.length - offset) / numberOfFrames;\n\n for (var i = 0; i < numberOfFrames; i++) {\n frameSizes.push(sizeOfFrame);\n }\n } // xiph\n\n\n if (parsed.lacing === 1) {\n for (var _i = 0; _i < numberOfFrames - 1; _i++) {\n var size = 0;\n\n do {\n size += data[offset];\n offset++;\n } while (data[offset - 1] === 0xFF);\n\n frameSizes.push(size);\n }\n } // ebml\n\n\n if (parsed.lacing === 3) {\n // first vint is unsinged\n // after that vints are singed and\n // based on a compounding size\n var _size = 0;\n\n for (var _i2 = 0; _i2 < numberOfFrames - 1; _i2++) {\n var vint = _i2 === 0 ? getvint(data, offset) : getvint(data, offset, true, true);\n _size += vint.value;\n frameSizes.push(_size);\n offset += vint.length;\n }\n }\n\n frameSizes.forEach(function (size) {\n parsed.frames.push(data.subarray(offset, offset + size));\n offset += size;\n });\n return parsed;\n}; // VP9 Codec Feature Metadata (CodecPrivate)\n// https://www.webmproject.org/docs/container/\n\nvar parseVp9Private = function parseVp9Private(bytes) {\n var i = 0;\n var params = {};\n\n while (i < bytes.length) {\n var id = bytes[i] & 0x7f;\n var len = bytes[i + 1];\n var val = void 0;\n\n if (len === 1) {\n val = bytes[i + 2];\n } else {\n val = bytes.subarray(i + 2, i + 2 + len);\n }\n\n if (id === 1) {\n params.profile = val;\n } else if (id === 2) {\n params.level = val;\n } else if (id === 3) {\n params.bitDepth = val;\n } else if (id === 4) {\n params.chromaSubsampling = val;\n } else {\n params[id] = val;\n }\n\n i += 2 + len;\n }\n\n return params;\n};\n\nexport var parseTracks = function parseTracks(bytes) {\n bytes = toUint8(bytes);\n var decodedTracks = [];\n var tracks = findEbml(bytes, [EBML_TAGS.Segment, EBML_TAGS.Tracks, EBML_TAGS.Track]);\n\n if (!tracks.length) {\n tracks = findEbml(bytes, [EBML_TAGS.Tracks, EBML_TAGS.Track]);\n }\n\n if (!tracks.length) {\n tracks = findEbml(bytes, [EBML_TAGS.Track]);\n }\n\n if (!tracks.length) {\n return decodedTracks;\n }\n\n tracks.forEach(function (track) {\n var trackType = findEbml(track, EBML_TAGS.TrackType)[0];\n\n if (!trackType || !trackType.length) {\n return;\n } // 1 is video, 2 is audio, 17 is subtitle\n // other values are unimportant in this context\n\n\n if (trackType[0] === 1) {\n trackType = 'video';\n } else if (trackType[0] === 2) {\n trackType = 'audio';\n } else if (trackType[0] === 17) {\n trackType = 'subtitle';\n } else {\n return;\n } // todo parse language\n\n\n var decodedTrack = {\n rawCodec: bytesToString(findEbml(track, [EBML_TAGS.CodecID])[0]),\n type: trackType,\n codecPrivate: findEbml(track, [EBML_TAGS.CodecPrivate])[0],\n number: bytesToNumber(findEbml(track, [EBML_TAGS.TrackNumber])[0]),\n defaultDuration: bytesToNumber(findEbml(track, [EBML_TAGS.DefaultDuration])[0]),\n default: findEbml(track, [EBML_TAGS.FlagDefault])[0],\n rawData: track\n };\n var codec = '';\n\n if (/V_MPEG4\\/ISO\\/AVC/.test(decodedTrack.rawCodec)) {\n codec = \"avc1.\" + getAvcCodec(decodedTrack.codecPrivate);\n } else if (/V_MPEGH\\/ISO\\/HEVC/.test(decodedTrack.rawCodec)) {\n codec = \"hev1.\" + getHvcCodec(decodedTrack.codecPrivate);\n } else if (/V_MPEG4\\/ISO\\/ASP/.test(decodedTrack.rawCodec)) {\n if (decodedTrack.codecPrivate) {\n codec = 'mp4v.20.' + decodedTrack.codecPrivate[4].toString();\n } else {\n codec = 'mp4v.20.9';\n }\n } else if (/^V_THEORA/.test(decodedTrack.rawCodec)) {\n codec = 'theora';\n } else if (/^V_VP8/.test(decodedTrack.rawCodec)) {\n codec = 'vp8';\n } else if (/^V_VP9/.test(decodedTrack.rawCodec)) {\n if (decodedTrack.codecPrivate) {\n var _parseVp9Private = parseVp9Private(decodedTrack.codecPrivate),\n profile = _parseVp9Private.profile,\n level = _parseVp9Private.level,\n bitDepth = _parseVp9Private.bitDepth,\n chromaSubsampling = _parseVp9Private.chromaSubsampling;\n\n codec = 'vp09.';\n codec += padStart(profile, 2, '0') + \".\";\n codec += padStart(level, 2, '0') + \".\";\n codec += padStart(bitDepth, 2, '0') + \".\";\n codec += \"\" + padStart(chromaSubsampling, 2, '0'); // Video -> Colour -> Ebml name\n\n var matrixCoefficients = findEbml(track, [0xE0, [0x55, 0xB0], [0x55, 0xB1]])[0] || [];\n var videoFullRangeFlag = findEbml(track, [0xE0, [0x55, 0xB0], [0x55, 0xB9]])[0] || [];\n var transferCharacteristics = findEbml(track, [0xE0, [0x55, 0xB0], [0x55, 0xBA]])[0] || [];\n var colourPrimaries = findEbml(track, [0xE0, [0x55, 0xB0], [0x55, 0xBB]])[0] || []; // if we find any optional codec parameter specify them all.\n\n if (matrixCoefficients.length || videoFullRangeFlag.length || transferCharacteristics.length || colourPrimaries.length) {\n codec += \".\" + padStart(colourPrimaries[0], 2, '0');\n codec += \".\" + padStart(transferCharacteristics[0], 2, '0');\n codec += \".\" + padStart(matrixCoefficients[0], 2, '0');\n codec += \".\" + padStart(videoFullRangeFlag[0], 2, '0');\n }\n } else {\n codec = 'vp9';\n }\n } else if (/^V_AV1/.test(decodedTrack.rawCodec)) {\n codec = \"av01.\" + getAv1Codec(decodedTrack.codecPrivate);\n } else if (/A_ALAC/.test(decodedTrack.rawCodec)) {\n codec = 'alac';\n } else if (/A_MPEG\\/L2/.test(decodedTrack.rawCodec)) {\n codec = 'mp2';\n } else if (/A_MPEG\\/L3/.test(decodedTrack.rawCodec)) {\n codec = 'mp3';\n } else if (/^A_AAC/.test(decodedTrack.rawCodec)) {\n if (decodedTrack.codecPrivate) {\n codec = 'mp4a.40.' + (decodedTrack.codecPrivate[0] >>> 3).toString();\n } else {\n codec = 'mp4a.40.2';\n }\n } else if (/^A_AC3/.test(decodedTrack.rawCodec)) {\n codec = 'ac-3';\n } else if (/^A_PCM/.test(decodedTrack.rawCodec)) {\n codec = 'pcm';\n } else if (/^A_MS\\/ACM/.test(decodedTrack.rawCodec)) {\n codec = 'speex';\n } else if (/^A_EAC3/.test(decodedTrack.rawCodec)) {\n codec = 'ec-3';\n } else if (/^A_VORBIS/.test(decodedTrack.rawCodec)) {\n codec = 'vorbis';\n } else if (/^A_FLAC/.test(decodedTrack.rawCodec)) {\n codec = 'flac';\n } else if (/^A_OPUS/.test(decodedTrack.rawCodec)) {\n codec = 'opus';\n }\n\n decodedTrack.codec = codec;\n decodedTracks.push(decodedTrack);\n });\n return decodedTracks.sort(function (a, b) {\n return a.number - b.number;\n });\n};\nexport var parseData = function parseData(data, tracks) {\n var allBlocks = [];\n var segment = findEbml(data, [EBML_TAGS.Segment])[0];\n var timestampScale = findEbml(segment, [EBML_TAGS.SegmentInfo, EBML_TAGS.TimestampScale])[0]; // in nanoseconds, defaults to 1ms\n\n if (timestampScale && timestampScale.length) {\n timestampScale = bytesToNumber(timestampScale);\n } else {\n timestampScale = 1000000;\n }\n\n var clusters = findEbml(segment, [EBML_TAGS.Cluster]);\n\n if (!tracks) {\n tracks = parseTracks(segment);\n }\n\n clusters.forEach(function (cluster, ci) {\n var simpleBlocks = findEbml(cluster, [EBML_TAGS.SimpleBlock]).map(function (b) {\n return {\n type: 'simple',\n data: b\n };\n });\n var blockGroups = findEbml(cluster, [EBML_TAGS.BlockGroup]).map(function (b) {\n return {\n type: 'group',\n data: b\n };\n });\n var timestamp = findEbml(cluster, [EBML_TAGS.Timestamp])[0] || 0;\n\n if (timestamp && timestamp.length) {\n timestamp = bytesToNumber(timestamp);\n } // get all blocks then sort them into the correct order\n\n\n var blocks = simpleBlocks.concat(blockGroups).sort(function (a, b) {\n return a.data.byteOffset - b.data.byteOffset;\n });\n blocks.forEach(function (block, bi) {\n var decoded = decodeBlock(block.data, block.type, timestampScale, timestamp);\n allBlocks.push(decoded);\n });\n });\n return {\n tracks: tracks,\n blocks: allBlocks\n };\n};","import { toUint8, bytesMatch } from './byte-helpers.js';\nvar ID3 = toUint8([0x49, 0x44, 0x33]);\nexport var getId3Size = function getId3Size(bytes, offset) {\n if (offset === void 0) {\n offset = 0;\n }\n\n bytes = toUint8(bytes);\n var flags = bytes[offset + 5];\n var returnSize = bytes[offset + 6] << 21 | bytes[offset + 7] << 14 | bytes[offset + 8] << 7 | bytes[offset + 9];\n var footerPresent = (flags & 16) >> 4;\n\n if (footerPresent) {\n return returnSize + 20;\n }\n\n return returnSize + 10;\n};\nexport var getId3Offset = function getId3Offset(bytes, offset) {\n if (offset === void 0) {\n offset = 0;\n }\n\n bytes = toUint8(bytes);\n\n if (bytes.length - offset < 10 || !bytesMatch(bytes, ID3, {\n offset: offset\n })) {\n return offset;\n }\n\n offset += getId3Size(bytes, offset); // recursive check for id3 tags as some files\n // have multiple ID3 tag sections even though\n // they should not.\n\n return getId3Offset(bytes, offset);\n};","var MPEGURL_REGEX = /^(audio|video|application)\\/(x-|vnd\\.apple\\.)?mpegurl/i;\nvar DASH_REGEX = /^application\\/dash\\+xml/i;\n/**\n * Returns a string that describes the type of source based on a video source object's\n * media type.\n *\n * @see {@link https://dev.w3.org/html5/pf-summary/video.html#dom-source-type|Source Type}\n *\n * @param {string} type\n * Video source object media type\n * @return {('hls'|'dash'|'vhs-json'|null)}\n * VHS source type string\n */\n\nexport var simpleTypeFromSourceType = function simpleTypeFromSourceType(type) {\n if (MPEGURL_REGEX.test(type)) {\n return 'hls';\n }\n\n if (DASH_REGEX.test(type)) {\n return 'dash';\n } // Denotes the special case of a manifest object passed to http-streaming instead of a\n // source URL.\n //\n // See https://en.wikipedia.org/wiki/Media_type for details on specifying media types.\n //\n // In this case, vnd stands for vendor, video.js for the organization, VHS for this\n // project, and the +json suffix identifies the structure of the media type.\n\n\n if (type === 'application/vnd.videojs.vhs+json') {\n return 'vhs-json';\n }\n\n return null;\n};","import { stringToBytes, toUint8, bytesMatch, bytesToString, toHexString, padStart, bytesToNumber } from './byte-helpers.js';\nimport { getAvcCodec, getHvcCodec, getAv1Codec } from './codec-helpers.js';\nimport { parseOpusHead } from './opus-helpers.js';\n\nvar normalizePath = function normalizePath(path) {\n if (typeof path === 'string') {\n return stringToBytes(path);\n }\n\n if (typeof path === 'number') {\n return path;\n }\n\n return path;\n};\n\nvar normalizePaths = function normalizePaths(paths) {\n if (!Array.isArray(paths)) {\n return [normalizePath(paths)];\n }\n\n return paths.map(function (p) {\n return normalizePath(p);\n });\n};\n\nvar DESCRIPTORS;\nexport var parseDescriptors = function parseDescriptors(bytes) {\n bytes = toUint8(bytes);\n var results = [];\n var i = 0;\n\n while (bytes.length > i) {\n var tag = bytes[i];\n var size = 0;\n var headerSize = 0; // tag\n\n headerSize++;\n var byte = bytes[headerSize]; // first byte\n\n headerSize++;\n\n while (byte & 0x80) {\n size = (byte & 0x7F) << 7;\n byte = bytes[headerSize];\n headerSize++;\n }\n\n size += byte & 0x7F;\n\n for (var z = 0; z < DESCRIPTORS.length; z++) {\n var _DESCRIPTORS$z = DESCRIPTORS[z],\n id = _DESCRIPTORS$z.id,\n parser = _DESCRIPTORS$z.parser;\n\n if (tag === id) {\n results.push(parser(bytes.subarray(headerSize, headerSize + size)));\n break;\n }\n }\n\n i += size + headerSize;\n }\n\n return results;\n};\nDESCRIPTORS = [{\n id: 0x03,\n parser: function parser(bytes) {\n var desc = {\n tag: 0x03,\n id: bytes[0] << 8 | bytes[1],\n flags: bytes[2],\n size: 3,\n dependsOnEsId: 0,\n ocrEsId: 0,\n descriptors: [],\n url: ''\n }; // depends on es id\n\n if (desc.flags & 0x80) {\n desc.dependsOnEsId = bytes[desc.size] << 8 | bytes[desc.size + 1];\n desc.size += 2;\n } // url\n\n\n if (desc.flags & 0x40) {\n var len = bytes[desc.size];\n desc.url = bytesToString(bytes.subarray(desc.size + 1, desc.size + 1 + len));\n desc.size += len;\n } // ocr es id\n\n\n if (desc.flags & 0x20) {\n desc.ocrEsId = bytes[desc.size] << 8 | bytes[desc.size + 1];\n desc.size += 2;\n }\n\n desc.descriptors = parseDescriptors(bytes.subarray(desc.size)) || [];\n return desc;\n }\n}, {\n id: 0x04,\n parser: function parser(bytes) {\n // DecoderConfigDescriptor\n var desc = {\n tag: 0x04,\n oti: bytes[0],\n streamType: bytes[1],\n bufferSize: bytes[2] << 16 | bytes[3] << 8 | bytes[4],\n maxBitrate: bytes[5] << 24 | bytes[6] << 16 | bytes[7] << 8 | bytes[8],\n avgBitrate: bytes[9] << 24 | bytes[10] << 16 | bytes[11] << 8 | bytes[12],\n descriptors: parseDescriptors(bytes.subarray(13))\n };\n return desc;\n }\n}, {\n id: 0x05,\n parser: function parser(bytes) {\n // DecoderSpecificInfo\n return {\n tag: 0x05,\n bytes: bytes\n };\n }\n}, {\n id: 0x06,\n parser: function parser(bytes) {\n // SLConfigDescriptor\n return {\n tag: 0x06,\n bytes: bytes\n };\n }\n}];\n/**\n * find any number of boxes by name given a path to it in an iso bmff\n * such as mp4.\n *\n * @param {TypedArray} bytes\n * bytes for the iso bmff to search for boxes in\n *\n * @param {Uint8Array[]|string[]|string|Uint8Array} name\n * An array of paths or a single path representing the name\n * of boxes to search through in bytes. Paths may be\n * uint8 (character codes) or strings.\n *\n * @param {boolean} [complete=false]\n * Should we search only for complete boxes on the final path.\n * This is very useful when you do not want to get back partial boxes\n * in the case of streaming files.\n *\n * @return {Uint8Array[]}\n * An array of the end paths that we found.\n */\n\nexport var findBox = function findBox(bytes, paths, complete) {\n if (complete === void 0) {\n complete = false;\n }\n\n paths = normalizePaths(paths);\n bytes = toUint8(bytes);\n var results = [];\n\n if (!paths.length) {\n // short-circuit the search for empty paths\n return results;\n }\n\n var i = 0;\n\n while (i < bytes.length) {\n var size = (bytes[i] << 24 | bytes[i + 1] << 16 | bytes[i + 2] << 8 | bytes[i + 3]) >>> 0;\n var type = bytes.subarray(i + 4, i + 8); // invalid box format.\n\n if (size === 0) {\n break;\n }\n\n var end = i + size;\n\n if (end > bytes.length) {\n // this box is bigger than the number of bytes we have\n // and complete is set, we cannot find any more boxes.\n if (complete) {\n break;\n }\n\n end = bytes.length;\n }\n\n var data = bytes.subarray(i + 8, end);\n\n if (bytesMatch(type, paths[0])) {\n if (paths.length === 1) {\n // this is the end of the path and we've found the box we were\n // looking for\n results.push(data);\n } else {\n // recursively search for the next box along the path\n results.push.apply(results, findBox(data, paths.slice(1), complete));\n }\n }\n\n i = end;\n } // we've finished searching all of bytes\n\n\n return results;\n};\n/**\n * Search for a single matching box by name in an iso bmff format like\n * mp4. This function is useful for finding codec boxes which\n * can be placed arbitrarily in sample descriptions depending\n * on the version of the file or file type.\n *\n * @param {TypedArray} bytes\n * bytes for the iso bmff to search for boxes in\n *\n * @param {string|Uint8Array} name\n * The name of the box to find.\n *\n * @return {Uint8Array[]}\n * a subarray of bytes representing the name boxed we found.\n */\n\nexport var findNamedBox = function findNamedBox(bytes, name) {\n name = normalizePath(name);\n\n if (!name.length) {\n // short-circuit the search for empty paths\n return bytes.subarray(bytes.length);\n }\n\n var i = 0;\n\n while (i < bytes.length) {\n if (bytesMatch(bytes.subarray(i, i + name.length), name)) {\n var size = (bytes[i - 4] << 24 | bytes[i - 3] << 16 | bytes[i - 2] << 8 | bytes[i - 1]) >>> 0;\n var end = size > 1 ? i + size : bytes.byteLength;\n return bytes.subarray(i + 4, end);\n }\n\n i++;\n } // we've finished searching all of bytes\n\n\n return bytes.subarray(bytes.length);\n};\n\nvar parseSamples = function parseSamples(data, entrySize, parseEntry) {\n if (entrySize === void 0) {\n entrySize = 4;\n }\n\n if (parseEntry === void 0) {\n parseEntry = function parseEntry(d) {\n return bytesToNumber(d);\n };\n }\n\n var entries = [];\n\n if (!data || !data.length) {\n return entries;\n }\n\n var entryCount = bytesToNumber(data.subarray(4, 8));\n\n for (var i = 8; entryCount; i += entrySize, entryCount--) {\n entries.push(parseEntry(data.subarray(i, i + entrySize)));\n }\n\n return entries;\n};\n\nexport var buildFrameTable = function buildFrameTable(stbl, timescale) {\n var keySamples = parseSamples(findBox(stbl, ['stss'])[0]);\n var chunkOffsets = parseSamples(findBox(stbl, ['stco'])[0]);\n var timeToSamples = parseSamples(findBox(stbl, ['stts'])[0], 8, function (entry) {\n return {\n sampleCount: bytesToNumber(entry.subarray(0, 4)),\n sampleDelta: bytesToNumber(entry.subarray(4, 8))\n };\n });\n var samplesToChunks = parseSamples(findBox(stbl, ['stsc'])[0], 12, function (entry) {\n return {\n firstChunk: bytesToNumber(entry.subarray(0, 4)),\n samplesPerChunk: bytesToNumber(entry.subarray(4, 8)),\n sampleDescriptionIndex: bytesToNumber(entry.subarray(8, 12))\n };\n });\n var stsz = findBox(stbl, ['stsz'])[0]; // stsz starts with a 4 byte sampleSize which we don't need\n\n var sampleSizes = parseSamples(stsz && stsz.length && stsz.subarray(4) || null);\n var frames = [];\n\n for (var chunkIndex = 0; chunkIndex < chunkOffsets.length; chunkIndex++) {\n var samplesInChunk = void 0;\n\n for (var i = 0; i < samplesToChunks.length; i++) {\n var sampleToChunk = samplesToChunks[i];\n var isThisOne = chunkIndex + 1 >= sampleToChunk.firstChunk && (i + 1 >= samplesToChunks.length || chunkIndex + 1 < samplesToChunks[i + 1].firstChunk);\n\n if (isThisOne) {\n samplesInChunk = sampleToChunk.samplesPerChunk;\n break;\n }\n }\n\n var chunkOffset = chunkOffsets[chunkIndex];\n\n for (var _i = 0; _i < samplesInChunk; _i++) {\n var frameEnd = sampleSizes[frames.length]; // if we don't have key samples every frame is a keyframe\n\n var keyframe = !keySamples.length;\n\n if (keySamples.length && keySamples.indexOf(frames.length + 1) !== -1) {\n keyframe = true;\n }\n\n var frame = {\n keyframe: keyframe,\n start: chunkOffset,\n end: chunkOffset + frameEnd\n };\n\n for (var k = 0; k < timeToSamples.length; k++) {\n var _timeToSamples$k = timeToSamples[k],\n sampleCount = _timeToSamples$k.sampleCount,\n sampleDelta = _timeToSamples$k.sampleDelta;\n\n if (frames.length <= sampleCount) {\n // ms to ns\n var lastTimestamp = frames.length ? frames[frames.length - 1].timestamp : 0;\n frame.timestamp = lastTimestamp + sampleDelta / timescale * 1000;\n frame.duration = sampleDelta;\n break;\n }\n }\n\n frames.push(frame);\n chunkOffset += frameEnd;\n }\n }\n\n return frames;\n};\nexport var addSampleDescription = function addSampleDescription(track, bytes) {\n var codec = bytesToString(bytes.subarray(0, 4));\n\n if (track.type === 'video') {\n track.info = track.info || {};\n track.info.width = bytes[28] << 8 | bytes[29];\n track.info.height = bytes[30] << 8 | bytes[31];\n } else if (track.type === 'audio') {\n track.info = track.info || {};\n track.info.channels = bytes[20] << 8 | bytes[21];\n track.info.bitDepth = bytes[22] << 8 | bytes[23];\n track.info.sampleRate = bytes[28] << 8 | bytes[29];\n }\n\n if (codec === 'avc1') {\n var avcC = findNamedBox(bytes, 'avcC'); // AVCDecoderConfigurationRecord\n\n codec += \".\" + getAvcCodec(avcC);\n track.info.avcC = avcC; // TODO: do we need to parse all this?\n\n /* {\n configurationVersion: avcC[0],\n profile: avcC[1],\n profileCompatibility: avcC[2],\n level: avcC[3],\n lengthSizeMinusOne: avcC[4] & 0x3\n };\n let spsNalUnitCount = avcC[5] & 0x1F;\n const spsNalUnits = track.info.avc.spsNalUnits = [];\n // past spsNalUnitCount\n let offset = 6;\n while (spsNalUnitCount--) {\n const nalLen = avcC[offset] << 8 | avcC[offset + 1];\n spsNalUnits.push(avcC.subarray(offset + 2, offset + 2 + nalLen));\n offset += nalLen + 2;\n }\n let ppsNalUnitCount = avcC[offset];\n const ppsNalUnits = track.info.avc.ppsNalUnits = [];\n // past ppsNalUnitCount\n offset += 1;\n while (ppsNalUnitCount--) {\n const nalLen = avcC[offset] << 8 | avcC[offset + 1];\n ppsNalUnits.push(avcC.subarray(offset + 2, offset + 2 + nalLen));\n offset += nalLen + 2;\n }*/\n // HEVCDecoderConfigurationRecord\n } else if (codec === 'hvc1' || codec === 'hev1') {\n codec += \".\" + getHvcCodec(findNamedBox(bytes, 'hvcC'));\n } else if (codec === 'mp4a' || codec === 'mp4v') {\n var esds = findNamedBox(bytes, 'esds');\n var esDescriptor = parseDescriptors(esds.subarray(4))[0];\n var decoderConfig = esDescriptor && esDescriptor.descriptors.filter(function (_ref) {\n var tag = _ref.tag;\n return tag === 0x04;\n })[0];\n\n if (decoderConfig) {\n // most codecs do not have a further '.'\n // such as 0xa5 for ac-3 and 0xa6 for e-ac-3\n codec += '.' + toHexString(decoderConfig.oti);\n\n if (decoderConfig.oti === 0x40) {\n codec += '.' + (decoderConfig.descriptors[0].bytes[0] >> 3).toString();\n } else if (decoderConfig.oti === 0x20) {\n codec += '.' + decoderConfig.descriptors[0].bytes[4].toString();\n } else if (decoderConfig.oti === 0xdd) {\n codec = 'vorbis';\n }\n } else if (track.type === 'audio') {\n codec += '.40.2';\n } else {\n codec += '.20.9';\n }\n } else if (codec === 'av01') {\n // AV1DecoderConfigurationRecord\n codec += \".\" + getAv1Codec(findNamedBox(bytes, 'av1C'));\n } else if (codec === 'vp09') {\n // VPCodecConfigurationRecord\n var vpcC = findNamedBox(bytes, 'vpcC'); // https://www.webmproject.org/vp9/mp4/\n\n var profile = vpcC[0];\n var level = vpcC[1];\n var bitDepth = vpcC[2] >> 4;\n var chromaSubsampling = (vpcC[2] & 0x0F) >> 1;\n var videoFullRangeFlag = (vpcC[2] & 0x0F) >> 3;\n var colourPrimaries = vpcC[3];\n var transferCharacteristics = vpcC[4];\n var matrixCoefficients = vpcC[5];\n codec += \".\" + padStart(profile, 2, '0');\n codec += \".\" + padStart(level, 2, '0');\n codec += \".\" + padStart(bitDepth, 2, '0');\n codec += \".\" + padStart(chromaSubsampling, 2, '0');\n codec += \".\" + padStart(colourPrimaries, 2, '0');\n codec += \".\" + padStart(transferCharacteristics, 2, '0');\n codec += \".\" + padStart(matrixCoefficients, 2, '0');\n codec += \".\" + padStart(videoFullRangeFlag, 2, '0');\n } else if (codec === 'theo') {\n codec = 'theora';\n } else if (codec === 'spex') {\n codec = 'speex';\n } else if (codec === '.mp3') {\n codec = 'mp4a.40.34';\n } else if (codec === 'msVo') {\n codec = 'vorbis';\n } else if (codec === 'Opus') {\n codec = 'opus';\n var dOps = findNamedBox(bytes, 'dOps');\n track.info.opus = parseOpusHead(dOps); // TODO: should this go into the webm code??\n // Firefox requires a codecDelay for opus playback\n // see https://bugzilla.mozilla.org/show_bug.cgi?id=1276238\n\n track.info.codecDelay = 6500000;\n } else {\n codec = codec.toLowerCase();\n }\n /* eslint-enable */\n // flac, ac-3, ec-3, opus\n\n\n track.codec = codec;\n};\nexport var parseTracks = function parseTracks(bytes, frameTable) {\n if (frameTable === void 0) {\n frameTable = true;\n }\n\n bytes = toUint8(bytes);\n var traks = findBox(bytes, ['moov', 'trak'], true);\n var tracks = [];\n traks.forEach(function (trak) {\n var track = {\n bytes: trak\n };\n var mdia = findBox(trak, ['mdia'])[0];\n var hdlr = findBox(mdia, ['hdlr'])[0];\n var trakType = bytesToString(hdlr.subarray(8, 12));\n\n if (trakType === 'soun') {\n track.type = 'audio';\n } else if (trakType === 'vide') {\n track.type = 'video';\n } else {\n track.type = trakType;\n }\n\n var tkhd = findBox(trak, ['tkhd'])[0];\n\n if (tkhd) {\n var view = new DataView(tkhd.buffer, tkhd.byteOffset, tkhd.byteLength);\n var tkhdVersion = view.getUint8(0);\n track.number = tkhdVersion === 0 ? view.getUint32(12) : view.getUint32(20);\n }\n\n var mdhd = findBox(mdia, ['mdhd'])[0];\n\n if (mdhd) {\n // mdhd is a FullBox, meaning it will have its own version as the first byte\n var version = mdhd[0];\n var index = version === 0 ? 12 : 20;\n track.timescale = (mdhd[index] << 24 | mdhd[index + 1] << 16 | mdhd[index + 2] << 8 | mdhd[index + 3]) >>> 0;\n }\n\n var stbl = findBox(mdia, ['minf', 'stbl'])[0];\n var stsd = findBox(stbl, ['stsd'])[0];\n var descriptionCount = bytesToNumber(stsd.subarray(4, 8));\n var offset = 8; // add codec and codec info\n\n while (descriptionCount--) {\n var len = bytesToNumber(stsd.subarray(offset, offset + 4));\n var sampleDescriptor = stsd.subarray(offset + 4, offset + 4 + len);\n addSampleDescription(track, sampleDescriptor);\n offset += 4 + len;\n }\n\n if (frameTable) {\n track.frameTable = buildFrameTable(stbl, track.timescale);\n } // codec has no sub parameters\n\n\n tracks.push(track);\n });\n return tracks;\n};\nexport var parseMediaInfo = function parseMediaInfo(bytes) {\n var mvhd = findBox(bytes, ['moov', 'mvhd'], true)[0];\n\n if (!mvhd || !mvhd.length) {\n return;\n }\n\n var info = {}; // ms to ns\n // mvhd v1 has 8 byte duration and other fields too\n\n if (mvhd[0] === 1) {\n info.timestampScale = bytesToNumber(mvhd.subarray(20, 24));\n info.duration = bytesToNumber(mvhd.subarray(24, 32));\n } else {\n info.timestampScale = bytesToNumber(mvhd.subarray(12, 16));\n info.duration = bytesToNumber(mvhd.subarray(16, 20));\n }\n\n info.bytes = mvhd;\n return info;\n};","import { bytesMatch, toUint8 } from './byte-helpers.js';\nexport var NAL_TYPE_ONE = toUint8([0x00, 0x00, 0x00, 0x01]);\nexport var NAL_TYPE_TWO = toUint8([0x00, 0x00, 0x01]);\nexport var EMULATION_PREVENTION = toUint8([0x00, 0x00, 0x03]);\n/**\n * Expunge any \"Emulation Prevention\" bytes from a \"Raw Byte\n * Sequence Payload\"\n *\n * @param data {Uint8Array} the bytes of a RBSP from a NAL\n * unit\n * @return {Uint8Array} the RBSP without any Emulation\n * Prevention Bytes\n */\n\nexport var discardEmulationPreventionBytes = function discardEmulationPreventionBytes(bytes) {\n var positions = [];\n var i = 1; // Find all `Emulation Prevention Bytes`\n\n while (i < bytes.length - 2) {\n if (bytesMatch(bytes.subarray(i, i + 3), EMULATION_PREVENTION)) {\n positions.push(i + 2);\n i++;\n }\n\n i++;\n } // If no Emulation Prevention Bytes were found just return the original\n // array\n\n\n if (positions.length === 0) {\n return bytes;\n } // Create a new array to hold the NAL unit data\n\n\n var newLength = bytes.length - positions.length;\n var newData = new Uint8Array(newLength);\n var sourceIndex = 0;\n\n for (i = 0; i < newLength; sourceIndex++, i++) {\n if (sourceIndex === positions[0]) {\n // Skip this byte\n sourceIndex++; // Remove this position index\n\n positions.shift();\n }\n\n newData[i] = bytes[sourceIndex];\n }\n\n return newData;\n};\nexport var findNal = function findNal(bytes, dataType, types, nalLimit) {\n if (nalLimit === void 0) {\n nalLimit = Infinity;\n }\n\n bytes = toUint8(bytes);\n types = [].concat(types);\n var i = 0;\n var nalStart;\n var nalsFound = 0; // keep searching until:\n // we reach the end of bytes\n // we reach the maximum number of nals they want to seach\n // NOTE: that we disregard nalLimit when we have found the start\n // of the nal we want so that we can find the end of the nal we want.\n\n while (i < bytes.length && (nalsFound < nalLimit || nalStart)) {\n var nalOffset = void 0;\n\n if (bytesMatch(bytes.subarray(i), NAL_TYPE_ONE)) {\n nalOffset = 4;\n } else if (bytesMatch(bytes.subarray(i), NAL_TYPE_TWO)) {\n nalOffset = 3;\n } // we are unsynced,\n // find the next nal unit\n\n\n if (!nalOffset) {\n i++;\n continue;\n }\n\n nalsFound++;\n\n if (nalStart) {\n return discardEmulationPreventionBytes(bytes.subarray(nalStart, i));\n }\n\n var nalType = void 0;\n\n if (dataType === 'h264') {\n nalType = bytes[i + nalOffset] & 0x1f;\n } else if (dataType === 'h265') {\n nalType = bytes[i + nalOffset] >> 1 & 0x3f;\n }\n\n if (types.indexOf(nalType) !== -1) {\n nalStart = i + nalOffset;\n } // nal header is 1 length for h264, and 2 for h265\n\n\n i += nalOffset + (dataType === 'h264' ? 1 : 2);\n }\n\n return bytes.subarray(0, 0);\n};\nexport var findH264Nal = function findH264Nal(bytes, type, nalLimit) {\n return findNal(bytes, 'h264', type, nalLimit);\n};\nexport var findH265Nal = function findH265Nal(bytes, type, nalLimit) {\n return findNal(bytes, 'h265', type, nalLimit);\n};","export var OPUS_HEAD = new Uint8Array([// O, p, u, s\n0x4f, 0x70, 0x75, 0x73, // H, e, a, d\n0x48, 0x65, 0x61, 0x64]); // https://wiki.xiph.org/OggOpus\n// https://vfrmaniac.fushizen.eu/contents/opus_in_isobmff.html\n// https://opus-codec.org/docs/opusfile_api-0.7/structOpusHead.html\n\nexport var parseOpusHead = function parseOpusHead(bytes) {\n var view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);\n var version = view.getUint8(0); // version 0, from mp4, does not use littleEndian.\n\n var littleEndian = version !== 0;\n var config = {\n version: version,\n channels: view.getUint8(1),\n preSkip: view.getUint16(2, littleEndian),\n sampleRate: view.getUint32(4, littleEndian),\n outputGain: view.getUint16(8, littleEndian),\n channelMappingFamily: view.getUint8(10)\n };\n\n if (config.channelMappingFamily > 0 && bytes.length > 10) {\n config.streamCount = view.getUint8(11);\n config.twoChannelStreamCount = view.getUint8(12);\n config.channelMapping = [];\n\n for (var c = 0; c < config.channels; c++) {\n config.channelMapping.push(view.getUint8(13 + c));\n }\n }\n\n return config;\n};\nexport var setOpusHead = function setOpusHead(config) {\n var size = config.channelMappingFamily <= 0 ? 11 : 12 + config.channels;\n var view = new DataView(new ArrayBuffer(size));\n var littleEndian = config.version !== 0;\n view.setUint8(0, config.version);\n view.setUint8(1, config.channels);\n view.setUint16(2, config.preSkip, littleEndian);\n view.setUint32(4, config.sampleRate, littleEndian);\n view.setUint16(8, config.outputGain, littleEndian);\n view.setUint8(10, config.channelMappingFamily);\n\n if (config.channelMappingFamily > 0) {\n view.setUint8(11, config.streamCount);\n config.channelMapping.foreach(function (cm, i) {\n view.setUint8(12 + i, cm);\n });\n }\n\n return new Uint8Array(view.buffer);\n};","import URLToolkit from 'url-toolkit';\nimport window from 'global/window';\nvar DEFAULT_LOCATION = 'http://example.com';\n\nvar resolveUrl = function resolveUrl(baseUrl, relativeUrl) {\n // return early if we don't need to resolve\n if (/^[a-z]+:/i.test(relativeUrl)) {\n return relativeUrl;\n } // if baseUrl is a data URI, ignore it and resolve everything relative to window.location\n\n\n if (/^data:/.test(baseUrl)) {\n baseUrl = window.location && window.location.href || '';\n } // IE11 supports URL but not the URL constructor\n // feature detect the behavior we want\n\n\n var nativeURL = typeof window.URL === 'function';\n var protocolLess = /^\\/\\//.test(baseUrl); // remove location if window.location isn't available (i.e. we're in node)\n // and if baseUrl isn't an absolute url\n\n var removeLocation = !window.location && !/\\/\\//i.test(baseUrl); // if the base URL is relative then combine with the current location\n\n if (nativeURL) {\n baseUrl = new window.URL(baseUrl, window.location || DEFAULT_LOCATION);\n } else if (!/\\/\\//i.test(baseUrl)) {\n baseUrl = URLToolkit.buildAbsoluteURL(window.location && window.location.href || '', baseUrl);\n }\n\n if (nativeURL) {\n var newUrl = new URL(relativeUrl, baseUrl); // if we're a protocol-less url, remove the protocol\n // and if we're location-less, remove the location\n // otherwise, return the url unmodified\n\n if (removeLocation) {\n return newUrl.href.slice(DEFAULT_LOCATION.length);\n } else if (protocolLess) {\n return newUrl.href.slice(newUrl.protocol.length);\n }\n\n return newUrl.href;\n }\n\n return URLToolkit.buildAbsoluteURL(baseUrl, relativeUrl);\n};\n\nexport default resolveUrl;","\"use strict\";\n\nvar window = require('global/window');\n\nvar httpResponseHandler = function httpResponseHandler(callback, decodeResponseBody) {\n if (decodeResponseBody === void 0) {\n decodeResponseBody = false;\n }\n\n return function (err, response, responseBody) {\n // if the XHR failed, return that error\n if (err) {\n callback(err);\n return;\n } // if the HTTP status code is 4xx or 5xx, the request also failed\n\n\n if (response.statusCode >= 400 && response.statusCode <= 599) {\n var cause = responseBody;\n\n if (decodeResponseBody) {\n if (window.TextDecoder) {\n var charset = getCharset(response.headers && response.headers['content-type']);\n\n try {\n cause = new TextDecoder(charset).decode(responseBody);\n } catch (e) {}\n } else {\n cause = String.fromCharCode.apply(null, new Uint8Array(responseBody));\n }\n }\n\n callback({\n cause: cause\n });\n return;\n } // otherwise, request succeeded\n\n\n callback(null, responseBody);\n };\n};\n\nfunction getCharset(contentTypeHeader) {\n if (contentTypeHeader === void 0) {\n contentTypeHeader = '';\n }\n\n return contentTypeHeader.toLowerCase().split(';').reduce(function (charset, contentType) {\n var _contentType$split = contentType.split('='),\n type = _contentType$split[0],\n value = _contentType$split[1];\n\n if (type.trim() === 'charset') {\n return value.trim();\n }\n\n return charset;\n }, 'utf-8');\n}\n\nmodule.exports = httpResponseHandler;","\"use strict\";\n\nvar window = require(\"global/window\");\n\nvar _extends = require(\"@babel/runtime/helpers/extends\");\n\nvar isFunction = require('is-function');\n\ncreateXHR.httpHandler = require('./http-handler.js');\n/**\n * @license\n * slighly modified parse-headers 2.0.2 \n * Copyright (c) 2014 David Björklund\n * Available under the MIT license\n * \n */\n\nvar parseHeaders = function parseHeaders(headers) {\n var result = {};\n\n if (!headers) {\n return result;\n }\n\n headers.trim().split('\\n').forEach(function (row) {\n var index = row.indexOf(':');\n var key = row.slice(0, index).trim().toLowerCase();\n var value = row.slice(index + 1).trim();\n\n if (typeof result[key] === 'undefined') {\n result[key] = value;\n } else if (Array.isArray(result[key])) {\n result[key].push(value);\n } else {\n result[key] = [result[key], value];\n }\n });\n return result;\n};\n\nmodule.exports = createXHR; // Allow use of default import syntax in TypeScript\n\nmodule.exports.default = createXHR;\ncreateXHR.XMLHttpRequest = window.XMLHttpRequest || noop;\ncreateXHR.XDomainRequest = \"withCredentials\" in new createXHR.XMLHttpRequest() ? createXHR.XMLHttpRequest : window.XDomainRequest;\nforEachArray([\"get\", \"put\", \"post\", \"patch\", \"head\", \"delete\"], function (method) {\n createXHR[method === \"delete\" ? \"del\" : method] = function (uri, options, callback) {\n options = initParams(uri, options, callback);\n options.method = method.toUpperCase();\n return _createXHR(options);\n };\n});\n\nfunction forEachArray(array, iterator) {\n for (var i = 0; i < array.length; i++) {\n iterator(array[i]);\n }\n}\n\nfunction isEmpty(obj) {\n for (var i in obj) {\n if (obj.hasOwnProperty(i)) return false;\n }\n\n return true;\n}\n\nfunction initParams(uri, options, callback) {\n var params = uri;\n\n if (isFunction(options)) {\n callback = options;\n\n if (typeof uri === \"string\") {\n params = {\n uri: uri\n };\n }\n } else {\n params = _extends({}, options, {\n uri: uri\n });\n }\n\n params.callback = callback;\n return params;\n}\n\nfunction createXHR(uri, options, callback) {\n options = initParams(uri, options, callback);\n return _createXHR(options);\n}\n\nfunction _createXHR(options) {\n if (typeof options.callback === \"undefined\") {\n throw new Error(\"callback argument missing\");\n }\n\n var called = false;\n\n var callback = function cbOnce(err, response, body) {\n if (!called) {\n called = true;\n options.callback(err, response, body);\n }\n };\n\n function readystatechange() {\n if (xhr.readyState === 4) {\n setTimeout(loadFunc, 0);\n }\n }\n\n function getBody() {\n // Chrome with requestType=blob throws errors arround when even testing access to responseText\n var body = undefined;\n\n if (xhr.response) {\n body = xhr.response;\n } else {\n body = xhr.responseText || getXml(xhr);\n }\n\n if (isJson) {\n try {\n body = JSON.parse(body);\n } catch (e) {}\n }\n\n return body;\n }\n\n function errorFunc(evt) {\n clearTimeout(timeoutTimer);\n\n if (!(evt instanceof Error)) {\n evt = new Error(\"\" + (evt || \"Unknown XMLHttpRequest Error\"));\n }\n\n evt.statusCode = 0;\n return callback(evt, failureResponse);\n } // will load the data & process the response in a special response object\n\n\n function loadFunc() {\n if (aborted) return;\n var status;\n clearTimeout(timeoutTimer);\n\n if (options.useXDR && xhr.status === undefined) {\n //IE8 CORS GET successful response doesn't have a status field, but body is fine\n status = 200;\n } else {\n status = xhr.status === 1223 ? 204 : xhr.status;\n }\n\n var response = failureResponse;\n var err = null;\n\n if (status !== 0) {\n response = {\n body: getBody(),\n statusCode: status,\n method: method,\n headers: {},\n url: uri,\n rawRequest: xhr\n };\n\n if (xhr.getAllResponseHeaders) {\n //remember xhr can in fact be XDR for CORS in IE\n response.headers = parseHeaders(xhr.getAllResponseHeaders());\n }\n } else {\n err = new Error(\"Internal XMLHttpRequest Error\");\n }\n\n return callback(err, response, response.body);\n }\n\n var xhr = options.xhr || null;\n\n if (!xhr) {\n if (options.cors || options.useXDR) {\n xhr = new createXHR.XDomainRequest();\n } else {\n xhr = new createXHR.XMLHttpRequest();\n }\n }\n\n var key;\n var aborted;\n var uri = xhr.url = options.uri || options.url;\n var method = xhr.method = options.method || \"GET\";\n var body = options.body || options.data;\n var headers = xhr.headers = options.headers || {};\n var sync = !!options.sync;\n var isJson = false;\n var timeoutTimer;\n var failureResponse = {\n body: undefined,\n headers: {},\n statusCode: 0,\n method: method,\n url: uri,\n rawRequest: xhr\n };\n\n if (\"json\" in options && options.json !== false) {\n isJson = true;\n headers[\"accept\"] || headers[\"Accept\"] || (headers[\"Accept\"] = \"application/json\"); //Don't override existing accept header declared by user\n\n if (method !== \"GET\" && method !== \"HEAD\") {\n headers[\"content-type\"] || headers[\"Content-Type\"] || (headers[\"Content-Type\"] = \"application/json\"); //Don't override existing accept header declared by user\n\n body = JSON.stringify(options.json === true ? body : options.json);\n }\n }\n\n xhr.onreadystatechange = readystatechange;\n xhr.onload = loadFunc;\n xhr.onerror = errorFunc; // IE9 must have onprogress be set to a unique function.\n\n xhr.onprogress = function () {// IE must die\n };\n\n xhr.onabort = function () {\n aborted = true;\n };\n\n xhr.ontimeout = errorFunc;\n xhr.open(method, uri, !sync, options.username, options.password); //has to be after open\n\n if (!sync) {\n xhr.withCredentials = !!options.withCredentials;\n } // Cannot set timeout with sync request\n // not setting timeout on the xhr object, because of old webkits etc. not handling that correctly\n // both npm's request and jquery 1.x use this kind of timeout, so this is being consistent\n\n\n if (!sync && options.timeout > 0) {\n timeoutTimer = setTimeout(function () {\n if (aborted) return;\n aborted = true; //IE9 may still call readystatechange\n\n xhr.abort(\"timeout\");\n var e = new Error(\"XMLHttpRequest timeout\");\n e.code = \"ETIMEDOUT\";\n errorFunc(e);\n }, options.timeout);\n }\n\n if (xhr.setRequestHeader) {\n for (key in headers) {\n if (headers.hasOwnProperty(key)) {\n xhr.setRequestHeader(key, headers[key]);\n }\n }\n } else if (options.headers && !isEmpty(options.headers)) {\n throw new Error(\"Headers cannot be set on an XDomainRequest object\");\n }\n\n if (\"responseType\" in options) {\n xhr.responseType = options.responseType;\n }\n\n if (\"beforeSend\" in options && typeof options.beforeSend === \"function\") {\n options.beforeSend(xhr);\n } // Microsoft Edge browser sends \"undefined\" when send is called with undefined value.\n // XMLHttpRequest spec says to pass null as body to indicate no body\n // See https://github.com/naugtur/xhr/issues/100.\n\n\n xhr.send(body || null);\n return xhr;\n}\n\nfunction getXml(xhr) {\n // xhr.responseXML will throw Exception \"InvalidStateError\" or \"DOMException\"\n // See https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/responseXML.\n try {\n if (xhr.responseType === \"document\") {\n return xhr.responseXML;\n }\n\n var firefoxBugTakenEffect = xhr.responseXML && xhr.responseXML.documentElement.nodeName === \"parsererror\";\n\n if (xhr.responseType === \"\" && !firefoxBugTakenEffect) {\n return xhr.responseXML;\n }\n } catch (e) {}\n\n return null;\n}\n\nfunction noop() {}","let items = document.querySelectorAll('.accordion__item')\r\nlet title = document.querySelectorAll('.accordion__title-wrapper')\r\n\r\nexport const toggleAccordion = () => {\r\n title.forEach((question) =>\r\n question.addEventListener('click', function () {\r\n let thisItem = this.parentNode\r\n\r\n items.forEach((item) => {\r\n if (thisItem == item) {\r\n thisItem.classList.toggle('active')\r\n return\r\n }\r\n item.classList.remove('active')\r\n })\r\n })\r\n )\r\n}\r\n","const burger = document.querySelector('.burger-js')\r\nconst menu = document.querySelector('.menu-js')\r\nconst menuLinks = document.querySelectorAll('.nav__link')\r\n\r\nexport const changeMenu = () => {\r\n\tburger?.addEventListener('click', () => {\r\n\t\tmenu?.classList.toggle('active')\r\n\t\tburger?.classList.toggle('active')\r\n\t\tif (menu?.classList.contains('active')) {\r\n\t\t\tdocument.body.style.overflowY = 'hidden'\r\n\t\t} else {\r\n\t\t\tdocument.body.style.overflowY = 'auto'\r\n\t\t}\r\n\t})\r\n\r\n\tmenuLinks.forEach((el) => {\r\n\t\tel.addEventListener('click', () => {\r\n\t\t\tmenu?.classList.remove('active')\r\n\t\t\tdocument.body.style.overflowY = 'auto'\r\n\t\t\tburger?.classList.remove('active')\r\n\t\t})\r\n\t})\r\n}\r\n","const btnNext = document.querySelector('.nav-history__next')\r\n\r\nexport const paintBtn = () => {\r\n try {\r\n const scrollToTop = () => {\r\n const top = window.scrollY\r\n if (top >= 100) {\r\n btnNext.classList.add('active')\r\n } else {\r\n btnNext.classList.remove('active')\r\n }\r\n }\r\n\r\n scrollToTop()\r\n window.addEventListener('scroll', () => {\r\n scrollToTop()\r\n })\r\n } catch (e) {\r\n console.log(e)\r\n }\r\n}\r\n","import SmoothScroll from '../../../node_modules/smooth-scroll/dist/smooth-scroll.js'\r\nconst header = document.querySelector('header')\r\nconst btnUpWrapper = document.querySelector('.btn-up-wrapper')\r\n\r\nexport const addSmoothScroll = () => {\r\n const scroll = new SmoothScroll('a[href*=\"#\"]', {\r\n header: '.header',\r\n speed: 500\r\n })\r\n\r\n const scrollToTop = () => {\r\n const top = window.scrollY\r\n if (top >= 100) {\r\n header.classList.add('active')\r\n } else {\r\n header.classList.remove('active')\r\n }\r\n\r\n if (top >= 300) {\r\n btnUpWrapper.classList.add('active')\r\n } else {\r\n btnUpWrapper.classList.remove('active')\r\n }\r\n }\r\n scrollToTop()\r\n window.addEventListener('scroll', () => {\r\n scrollToTop()\r\n })\r\n}\r\n","import Swiper, { Navigation, Pagination, Autoplay } from 'swiper'\r\nSwiper.use([Navigation, Pagination, Autoplay])\r\n\r\nexport const initializationSliders = () => {\r\n try {\r\n const recomendationsSlider = new Swiper('.recommendations__slider', {\r\n slidesPerView: '1',\r\n navigation: {\r\n nextEl: '.recommendations__slider-navigation-next',\r\n prevEl: '.recommendations__slider-navigation-prev'\r\n },\r\n loop: true\r\n })\r\n\r\n const goodsSlider = new Swiper('.goods__slider', {\r\n slidesPerView: 3,\r\n loop: true,\r\n navigation: {\r\n nextEl: '.goods__slider-next',\r\n prevEl: '.goods__slider-prev'\r\n },\r\n pagination: {\r\n clickable: true,\r\n el: '.goods__slider-pagination',\r\n clickable: true\r\n },\r\n breakpoints: {\r\n 940: {\r\n slidesPerView: 4\r\n },\r\n 764: {\r\n slidesPerView: 3\r\n },\r\n 600: {\r\n slidesPerView: 2\r\n },\r\n 0: {\r\n slidesPerView: 1\r\n }\r\n }\r\n })\r\n\r\n const professionalSlider = new Swiper('.professional__slider', {\r\n navigation: {\r\n nextEl: '.professional__slider-navigation-next',\r\n prevEl: '.professional__slider-navigation-prev'\r\n },\r\n paginationClickable: true,\r\n // loop: true,\r\n initialSlide: 1,\r\n centeredSlides: true,\r\n slidesPerView: 2,\r\n speed: 1000,\r\n zoom: {\r\n maxRatio: 1.6\r\n },\r\n pagination: {\r\n clickable: true,\r\n el: '.professional__slider-pagination',\r\n clickable: true\r\n },\r\n breakpoints: {\r\n 993: {\r\n spaceBetween: -180\r\n },\r\n 860: {\r\n spaceBetween: -260,\r\n slidesPerView: 2\r\n },\r\n 768: {\r\n spaceBetween: -200\r\n },\r\n 500: {\r\n spaceBetween: -80\r\n },\r\n 320: {\r\n slidesPerView: 1.6,\r\n spaceBetween: -80\r\n }\r\n },\r\n allowTouchMove: false\r\n })\r\n\r\n const interviewSlider = new Swiper('.interview__slider', {\r\n navigation: {\r\n nextEl: '.interview__slider-navigation-next',\r\n prevEl: '.interview__slider-navigation-prev'\r\n },\r\n pagination: {\r\n el: '.interview__slider-pagination',\r\n clickable: true\r\n },\r\n allowTouchMove: false,\r\n paginationClickable: true,\r\n centeredSlides: true,\r\n loop: true,\r\n speed: 1000\r\n })\r\n\r\n const partnersSlider = new Swiper('.partners__wrapper', {\r\n freeMode: true,\r\n grabCursor: true,\r\n centeredSlides: true,\r\n slidesPerView: 'auto',\r\n loop: true,\r\n speed: 2000,\r\n autoplay: {\r\n enabled: true,\r\n delay: 1,\r\n disableOnInteraction: true\r\n },\r\n freeModeMomentum: true\r\n })\r\n\r\n document\r\n .querySelector('.partners__wrapper')\r\n .addEventListener('mouseover', function () {\r\n partnersSlider.autoplay.stop()\r\n })\r\n\r\n document\r\n .querySelector('.partners__wrapper')\r\n .addEventListener('mouseout', function () {\r\n partnersSlider.autoplay.start()\r\n })\r\n\r\n window.addEventListener('scroll', () => {\r\n if (!partnersSlider.autoplay.running) {\r\n partnersSlider.autoplay.start()\r\n }\r\n })\r\n } catch (e) {\r\n console.error(e)\r\n }\r\n}\r\n","import videojs from 'video.js'\r\n\r\nconst playBtn = document.querySelector('.video__btn')\r\nconst videoTitle = document.querySelector('.video__title')\r\nconst videoText = document.querySelector('.video__text')\r\nconst videoLink = document.querySelector('.video__link')\r\nconst videoGradient = document.querySelector('.video__gradient')\r\nconst videoIntro = document.querySelector('.video__intro')\r\nconst videoMask = document.querySelector('.video__mask')\r\nconst videoJsTech = document.querySelector('.vjs-tech')\r\n\r\nexport const addVideoPlayer = () => {\r\n try {\r\n let isPreviewVideo = true\r\n\r\n const videoPlayer = videojs(document.getElementById('video__player'), {\r\n autoplay: true,\r\n loop: true,\r\n muted: true,\r\n controls: false,\r\n playToggle: false\r\n })\r\n\r\n const loadMainVideo = (desktopUrl, mobileUrl) => {\r\n if (window.screen.width > 768) {\r\n videoPlayer.src({\r\n type: 'video/mp4',\r\n src: `./videos/${desktopUrl}`\r\n })\r\n } else {\r\n videoPlayer.src({\r\n type: 'video/mp4',\r\n src: `./videos/${mobileUrl}`\r\n })\r\n }\r\n }\r\n\r\n loadMainVideo('preview.mp4', 'preview-mobile.mp4')\r\n videoPlayer.volume(0.7)\r\n const changePlayerStatus = () => {\r\n videoPlayer.play()\r\n\r\n videoPlayer.addClass('play')\r\n videoPlayer.muted(false)\r\n videoPlayer.controls(true)\r\n videoPlayer.loop(false)\r\n\r\n playBtn.classList.add('hide')\r\n videoTitle.classList.add('hide')\r\n videoText.classList.add('hide')\r\n videoLink.classList.add('hide')\r\n }\r\n\r\n videoPlayer.on('play', () => {\r\n if (!videoPlayer.played()) {\r\n videoPlayer.addClass('play')\r\n videoPlayer.removeClass('play')\r\n playBtn?.classList.add('hide')\r\n } else if (videoPlayer.played() && videoPlayer.loop()) {\r\n videoPlayer.removeClass('play')\r\n } else if (videoPlayer.played() && !videoPlayer.loop()) {\r\n videoPlayer.removeClass('play')\r\n playBtn?.classList.add('hide')\r\n }\r\n })\r\n\r\n videoPlayer.on('pause', () => {\r\n playBtn?.classList.remove('hide')\r\n })\r\n\r\n videoPlayer.on('ended', () => {\r\n playBtn?.classList.remove('hide')\r\n videoMask?.classList.remove('visible')\r\n })\r\n\r\n videoMask.addEventListener('click', () => {\r\n playBtn?.classList.remove('hide')\r\n videoPlayer.pause()\r\n videoMask?.classList.remove('visible')\r\n })\r\n\r\n playBtn.addEventListener('click', () => {\r\n if (isPreviewVideo === true) {\r\n loadMainVideo('video.mp4', 'video-mobile.mp4')\r\n isPreviewVideo = false\r\n }\r\n document.querySelector('.video__inner').classList.add('active')\r\n document.querySelector('.video-js').classList.add('active')\r\n document.querySelector('.vjs-poster').classList.add('active')\r\n\r\n videoPlayer.fluid(true)\r\n videoGradient?.classList.add('hide')\r\n videoMask?.classList.add('visible')\r\n playBtn?.classList.add('center-position')\r\n document.querySelector('video').style.objectFit = 'contain'\r\n\r\n if (videoPlayer.muted()) {\r\n videoPlayer.currentTime(0)\r\n changePlayerStatus()\r\n } else {\r\n changePlayerStatus()\r\n }\r\n })\r\n } catch (e) {\r\n console.log(e)\r\n }\r\n}\r\n","var topLevel = typeof global !== 'undefined' ? global :\n typeof window !== 'undefined' ? window : {}\nvar minDoc = require('min-document');\n\nvar doccy;\n\nif (typeof document !== 'undefined') {\n doccy = document;\n} else {\n doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4'];\n\n if (!doccy) {\n doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4'] = minDoc;\n }\n}\n\nmodule.exports = doccy;\n","var win;\n\nif (typeof window !== \"undefined\") {\n win = window;\n} else if (typeof global !== \"undefined\") {\n win = global;\n} else if (typeof self !== \"undefined\"){\n win = self;\n} else {\n win = {};\n}\n\nmodule.exports = win;\n","module.exports = isFunction\n\nvar toString = Object.prototype.toString\n\nfunction isFunction (fn) {\n if (!fn) {\n return false\n }\n var string = toString.call(fn)\n return string === '[object Function]' ||\n (typeof fn === 'function' && string !== '[object RegExp]') ||\n (typeof window !== 'undefined' &&\n // IE8 and below\n (fn === window.setTimeout ||\n fn === window.alert ||\n fn === window.confirm ||\n fn === window.prompt))\n};\n","// Source: http://jsfiddle.net/vWx8V/\n// http://stackoverflow.com/questions/5603195/full-list-of-javascript-keycodes\n\n/**\n * Conenience method returns corresponding value for given keyName or keyCode.\n *\n * @param {Mixed} keyCode {Number} or keyName {String}\n * @return {Mixed}\n * @api public\n */\n\nfunction keyCode(searchInput) {\n // Keyboard Events\n if (searchInput && 'object' === typeof searchInput) {\n var hasKeyCode = searchInput.which || searchInput.keyCode || searchInput.charCode\n if (hasKeyCode) searchInput = hasKeyCode\n }\n\n // Numbers\n if ('number' === typeof searchInput) return names[searchInput]\n\n // Everything else (cast to string)\n var search = String(searchInput)\n\n // check codes\n var foundNamedKey = codes[search.toLowerCase()]\n if (foundNamedKey) return foundNamedKey\n\n // check aliases\n var foundNamedKey = aliases[search.toLowerCase()]\n if (foundNamedKey) return foundNamedKey\n\n // weird character?\n if (search.length === 1) return search.charCodeAt(0)\n\n return undefined\n}\n\n/**\n * Compares a keyboard event with a given keyCode or keyName.\n *\n * @param {Event} event Keyboard event that should be tested\n * @param {Mixed} keyCode {Number} or keyName {String}\n * @return {Boolean}\n * @api public\n */\nkeyCode.isEventKey = function isEventKey(event, nameOrCode) {\n if (event && 'object' === typeof event) {\n var keyCode = event.which || event.keyCode || event.charCode\n if (keyCode === null || keyCode === undefined) { return false; }\n if (typeof nameOrCode === 'string') {\n // check codes\n var foundNamedKey = codes[nameOrCode.toLowerCase()]\n if (foundNamedKey) { return foundNamedKey === keyCode; }\n \n // check aliases\n var foundNamedKey = aliases[nameOrCode.toLowerCase()]\n if (foundNamedKey) { return foundNamedKey === keyCode; }\n } else if (typeof nameOrCode === 'number') {\n return nameOrCode === keyCode;\n }\n return false;\n }\n}\n\nexports = module.exports = keyCode;\n\n/**\n * Get by name\n *\n * exports.code['enter'] // => 13\n */\n\nvar codes = exports.code = exports.codes = {\n 'backspace': 8,\n 'tab': 9,\n 'enter': 13,\n 'shift': 16,\n 'ctrl': 17,\n 'alt': 18,\n 'pause/break': 19,\n 'caps lock': 20,\n 'esc': 27,\n 'space': 32,\n 'page up': 33,\n 'page down': 34,\n 'end': 35,\n 'home': 36,\n 'left': 37,\n 'up': 38,\n 'right': 39,\n 'down': 40,\n 'insert': 45,\n 'delete': 46,\n 'command': 91,\n 'left command': 91,\n 'right command': 93,\n 'numpad *': 106,\n 'numpad +': 107,\n 'numpad -': 109,\n 'numpad .': 110,\n 'numpad /': 111,\n 'num lock': 144,\n 'scroll lock': 145,\n 'my computer': 182,\n 'my calculator': 183,\n ';': 186,\n '=': 187,\n ',': 188,\n '-': 189,\n '.': 190,\n '/': 191,\n '`': 192,\n '[': 219,\n '\\\\': 220,\n ']': 221,\n \"'\": 222\n}\n\n// Helper aliases\n\nvar aliases = exports.aliases = {\n 'windows': 91,\n '⇧': 16,\n '⌥': 18,\n '⌃': 17,\n '⌘': 91,\n 'ctl': 17,\n 'control': 17,\n 'option': 18,\n 'pause': 19,\n 'break': 19,\n 'caps': 20,\n 'return': 13,\n 'escape': 27,\n 'spc': 32,\n 'spacebar': 32,\n 'pgup': 33,\n 'pgdn': 34,\n 'ins': 45,\n 'del': 46,\n 'cmd': 91\n}\n\n/*!\n * Programatically add the following\n */\n\n// lower case chars\nfor (i = 97; i < 123; i++) codes[String.fromCharCode(i)] = i - 32\n\n// numbers\nfor (var i = 48; i < 58; i++) codes[i - 48] = i\n\n// function keys\nfor (i = 1; i < 13; i++) codes['f'+i] = i + 111\n\n// numpad keys\nfor (i = 0; i < 10; i++) codes['numpad '+i] = i + 96\n\n/**\n * Get by code\n *\n * exports.name[13] // => 'Enter'\n */\n\nvar names = exports.names = exports.title = {} // title for backward compat\n\n// Create reverse mapping\nfor (i in codes) names[codes[i]] = i\n\n// Add aliases\nfor (var alias in aliases) {\n codes[alias] = aliases[alias]\n}\n","/*! @name m3u8-parser @version 6.2.0 @license Apache-2.0 */\nimport Stream from '@videojs/vhs-utils/es/stream.js';\nimport _extends from '@babel/runtime/helpers/extends';\nimport decodeB64ToUint8Array from '@videojs/vhs-utils/es/decode-b64-to-uint8-array.js';\n\n/**\n * @file m3u8/line-stream.js\n */\n/**\n * A stream that buffers string input and generates a `data` event for each\n * line.\n *\n * @class LineStream\n * @extends Stream\n */\n\nclass LineStream extends Stream {\n constructor() {\n super();\n this.buffer = '';\n }\n /**\n * Add new data to be parsed.\n *\n * @param {string} data the text to process\n */\n\n\n push(data) {\n let nextNewline;\n this.buffer += data;\n nextNewline = this.buffer.indexOf('\\n');\n\n for (; nextNewline > -1; nextNewline = this.buffer.indexOf('\\n')) {\n this.trigger('data', this.buffer.substring(0, nextNewline));\n this.buffer = this.buffer.substring(nextNewline + 1);\n }\n }\n\n}\n\nconst TAB = String.fromCharCode(0x09);\n\nconst parseByterange = function (byterangeString) {\n // optionally match and capture 0+ digits before `@`\n // optionally match and capture 0+ digits after `@`\n const match = /([0-9.]*)?@?([0-9.]*)?/.exec(byterangeString || '');\n const result = {};\n\n if (match[1]) {\n result.length = parseInt(match[1], 10);\n }\n\n if (match[2]) {\n result.offset = parseInt(match[2], 10);\n }\n\n return result;\n};\n/**\n * \"forgiving\" attribute list psuedo-grammar:\n * attributes -> keyvalue (',' keyvalue)*\n * keyvalue -> key '=' value\n * key -> [^=]*\n * value -> '\"' [^\"]* '\"' | [^,]*\n */\n\n\nconst attributeSeparator = function () {\n const key = '[^=]*';\n const value = '\"[^\"]*\"|[^,]*';\n const keyvalue = '(?:' + key + ')=(?:' + value + ')';\n return new RegExp('(?:^|,)(' + keyvalue + ')');\n};\n/**\n * Parse attributes from a line given the separator\n *\n * @param {string} attributes the attribute line to parse\n */\n\n\nconst parseAttributes = function (attributes) {\n const result = {};\n\n if (!attributes) {\n return result;\n } // split the string using attributes as the separator\n\n\n const attrs = attributes.split(attributeSeparator());\n let i = attrs.length;\n let attr;\n\n while (i--) {\n // filter out unmatched portions of the string\n if (attrs[i] === '') {\n continue;\n } // split the key and value\n\n\n attr = /([^=]*)=(.*)/.exec(attrs[i]).slice(1); // trim whitespace and remove optional quotes around the value\n\n attr[0] = attr[0].replace(/^\\s+|\\s+$/g, '');\n attr[1] = attr[1].replace(/^\\s+|\\s+$/g, '');\n attr[1] = attr[1].replace(/^['\"](.*)['\"]$/g, '$1');\n result[attr[0]] = attr[1];\n }\n\n return result;\n};\n/**\n * A line-level M3U8 parser event stream. It expects to receive input one\n * line at a time and performs a context-free parse of its contents. A stream\n * interpretation of a manifest can be useful if the manifest is expected to\n * be too large to fit comfortably into memory or the entirety of the input\n * is not immediately available. Otherwise, it's probably much easier to work\n * with a regular `Parser` object.\n *\n * Produces `data` events with an object that captures the parser's\n * interpretation of the input. That object has a property `tag` that is one\n * of `uri`, `comment`, or `tag`. URIs only have a single additional\n * property, `line`, which captures the entirety of the input without\n * interpretation. Comments similarly have a single additional property\n * `text` which is the input without the leading `#`.\n *\n * Tags always have a property `tagType` which is the lower-cased version of\n * the M3U8 directive without the `#EXT` or `#EXT-X-` prefix. For instance,\n * `#EXT-X-MEDIA-SEQUENCE` becomes `media-sequence` when parsed. Unrecognized\n * tags are given the tag type `unknown` and a single additional property\n * `data` with the remainder of the input.\n *\n * @class ParseStream\n * @extends Stream\n */\n\n\nclass ParseStream extends Stream {\n constructor() {\n super();\n this.customParsers = [];\n this.tagMappers = [];\n }\n /**\n * Parses an additional line of input.\n *\n * @param {string} line a single line of an M3U8 file to parse\n */\n\n\n push(line) {\n let match;\n let event; // strip whitespace\n\n line = line.trim();\n\n if (line.length === 0) {\n // ignore empty lines\n return;\n } // URIs\n\n\n if (line[0] !== '#') {\n this.trigger('data', {\n type: 'uri',\n uri: line\n });\n return;\n } // map tags\n\n\n const newLines = this.tagMappers.reduce((acc, mapper) => {\n const mappedLine = mapper(line); // skip if unchanged\n\n if (mappedLine === line) {\n return acc;\n }\n\n return acc.concat([mappedLine]);\n }, [line]);\n newLines.forEach(newLine => {\n for (let i = 0; i < this.customParsers.length; i++) {\n if (this.customParsers[i].call(this, newLine)) {\n return;\n }\n } // Comments\n\n\n if (newLine.indexOf('#EXT') !== 0) {\n this.trigger('data', {\n type: 'comment',\n text: newLine.slice(1)\n });\n return;\n } // strip off any carriage returns here so the regex matching\n // doesn't have to account for them.\n\n\n newLine = newLine.replace('\\r', ''); // Tags\n\n match = /^#EXTM3U/.exec(newLine);\n\n if (match) {\n this.trigger('data', {\n type: 'tag',\n tagType: 'm3u'\n });\n return;\n }\n\n match = /^#EXTINF:([0-9\\.]*)?,?(.*)?$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'inf'\n };\n\n if (match[1]) {\n event.duration = parseFloat(match[1]);\n }\n\n if (match[2]) {\n event.title = match[2];\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-TARGETDURATION:([0-9.]*)?/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'targetduration'\n };\n\n if (match[1]) {\n event.duration = parseInt(match[1], 10);\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-VERSION:([0-9.]*)?/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'version'\n };\n\n if (match[1]) {\n event.version = parseInt(match[1], 10);\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-MEDIA-SEQUENCE:(\\-?[0-9.]*)?/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'media-sequence'\n };\n\n if (match[1]) {\n event.number = parseInt(match[1], 10);\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-DISCONTINUITY-SEQUENCE:(\\-?[0-9.]*)?/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'discontinuity-sequence'\n };\n\n if (match[1]) {\n event.number = parseInt(match[1], 10);\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-PLAYLIST-TYPE:(.*)?$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'playlist-type'\n };\n\n if (match[1]) {\n event.playlistType = match[1];\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-BYTERANGE:(.*)?$/.exec(newLine);\n\n if (match) {\n event = _extends(parseByterange(match[1]), {\n type: 'tag',\n tagType: 'byterange'\n });\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-ALLOW-CACHE:(YES|NO)?/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'allow-cache'\n };\n\n if (match[1]) {\n event.allowed = !/NO/.test(match[1]);\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-MAP:(.*)$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'map'\n };\n\n if (match[1]) {\n const attributes = parseAttributes(match[1]);\n\n if (attributes.URI) {\n event.uri = attributes.URI;\n }\n\n if (attributes.BYTERANGE) {\n event.byterange = parseByterange(attributes.BYTERANGE);\n }\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-STREAM-INF:(.*)$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'stream-inf'\n };\n\n if (match[1]) {\n event.attributes = parseAttributes(match[1]);\n\n if (event.attributes.RESOLUTION) {\n const split = event.attributes.RESOLUTION.split('x');\n const resolution = {};\n\n if (split[0]) {\n resolution.width = parseInt(split[0], 10);\n }\n\n if (split[1]) {\n resolution.height = parseInt(split[1], 10);\n }\n\n event.attributes.RESOLUTION = resolution;\n }\n\n if (event.attributes.BANDWIDTH) {\n event.attributes.BANDWIDTH = parseInt(event.attributes.BANDWIDTH, 10);\n }\n\n if (event.attributes['FRAME-RATE']) {\n event.attributes['FRAME-RATE'] = parseFloat(event.attributes['FRAME-RATE']);\n }\n\n if (event.attributes['PROGRAM-ID']) {\n event.attributes['PROGRAM-ID'] = parseInt(event.attributes['PROGRAM-ID'], 10);\n }\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-MEDIA:(.*)$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'media'\n };\n\n if (match[1]) {\n event.attributes = parseAttributes(match[1]);\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-ENDLIST/.exec(newLine);\n\n if (match) {\n this.trigger('data', {\n type: 'tag',\n tagType: 'endlist'\n });\n return;\n }\n\n match = /^#EXT-X-DISCONTINUITY/.exec(newLine);\n\n if (match) {\n this.trigger('data', {\n type: 'tag',\n tagType: 'discontinuity'\n });\n return;\n }\n\n match = /^#EXT-X-PROGRAM-DATE-TIME:(.*)$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'program-date-time'\n };\n\n if (match[1]) {\n event.dateTimeString = match[1];\n event.dateTimeObject = new Date(match[1]);\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-KEY:(.*)$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'key'\n };\n\n if (match[1]) {\n event.attributes = parseAttributes(match[1]); // parse the IV string into a Uint32Array\n\n if (event.attributes.IV) {\n if (event.attributes.IV.substring(0, 2).toLowerCase() === '0x') {\n event.attributes.IV = event.attributes.IV.substring(2);\n }\n\n event.attributes.IV = event.attributes.IV.match(/.{8}/g);\n event.attributes.IV[0] = parseInt(event.attributes.IV[0], 16);\n event.attributes.IV[1] = parseInt(event.attributes.IV[1], 16);\n event.attributes.IV[2] = parseInt(event.attributes.IV[2], 16);\n event.attributes.IV[3] = parseInt(event.attributes.IV[3], 16);\n event.attributes.IV = new Uint32Array(event.attributes.IV);\n }\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-START:(.*)$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'start'\n };\n\n if (match[1]) {\n event.attributes = parseAttributes(match[1]);\n event.attributes['TIME-OFFSET'] = parseFloat(event.attributes['TIME-OFFSET']);\n event.attributes.PRECISE = /YES/.test(event.attributes.PRECISE);\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-CUE-OUT-CONT:(.*)?$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'cue-out-cont'\n };\n\n if (match[1]) {\n event.data = match[1];\n } else {\n event.data = '';\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-CUE-OUT:(.*)?$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'cue-out'\n };\n\n if (match[1]) {\n event.data = match[1];\n } else {\n event.data = '';\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-CUE-IN:(.*)?$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'cue-in'\n };\n\n if (match[1]) {\n event.data = match[1];\n } else {\n event.data = '';\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-SKIP:(.*)$/.exec(newLine);\n\n if (match && match[1]) {\n event = {\n type: 'tag',\n tagType: 'skip'\n };\n event.attributes = parseAttributes(match[1]);\n\n if (event.attributes.hasOwnProperty('SKIPPED-SEGMENTS')) {\n event.attributes['SKIPPED-SEGMENTS'] = parseInt(event.attributes['SKIPPED-SEGMENTS'], 10);\n }\n\n if (event.attributes.hasOwnProperty('RECENTLY-REMOVED-DATERANGES')) {\n event.attributes['RECENTLY-REMOVED-DATERANGES'] = event.attributes['RECENTLY-REMOVED-DATERANGES'].split(TAB);\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-PART:(.*)$/.exec(newLine);\n\n if (match && match[1]) {\n event = {\n type: 'tag',\n tagType: 'part'\n };\n event.attributes = parseAttributes(match[1]);\n ['DURATION'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = parseFloat(event.attributes[key]);\n }\n });\n ['INDEPENDENT', 'GAP'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = /YES/.test(event.attributes[key]);\n }\n });\n\n if (event.attributes.hasOwnProperty('BYTERANGE')) {\n event.attributes.byterange = parseByterange(event.attributes.BYTERANGE);\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-SERVER-CONTROL:(.*)$/.exec(newLine);\n\n if (match && match[1]) {\n event = {\n type: 'tag',\n tagType: 'server-control'\n };\n event.attributes = parseAttributes(match[1]);\n ['CAN-SKIP-UNTIL', 'PART-HOLD-BACK', 'HOLD-BACK'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = parseFloat(event.attributes[key]);\n }\n });\n ['CAN-SKIP-DATERANGES', 'CAN-BLOCK-RELOAD'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = /YES/.test(event.attributes[key]);\n }\n });\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-PART-INF:(.*)$/.exec(newLine);\n\n if (match && match[1]) {\n event = {\n type: 'tag',\n tagType: 'part-inf'\n };\n event.attributes = parseAttributes(match[1]);\n ['PART-TARGET'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = parseFloat(event.attributes[key]);\n }\n });\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-PRELOAD-HINT:(.*)$/.exec(newLine);\n\n if (match && match[1]) {\n event = {\n type: 'tag',\n tagType: 'preload-hint'\n };\n event.attributes = parseAttributes(match[1]);\n ['BYTERANGE-START', 'BYTERANGE-LENGTH'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = parseInt(event.attributes[key], 10);\n const subkey = key === 'BYTERANGE-LENGTH' ? 'length' : 'offset';\n event.attributes.byterange = event.attributes.byterange || {};\n event.attributes.byterange[subkey] = event.attributes[key]; // only keep the parsed byterange object.\n\n delete event.attributes[key];\n }\n });\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-RENDITION-REPORT:(.*)$/.exec(newLine);\n\n if (match && match[1]) {\n event = {\n type: 'tag',\n tagType: 'rendition-report'\n };\n event.attributes = parseAttributes(match[1]);\n ['LAST-MSN', 'LAST-PART'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = parseInt(event.attributes[key], 10);\n }\n });\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-DATERANGE:(.*)$/.exec(newLine);\n\n if (match && match[1]) {\n event = {\n type: 'tag',\n tagType: 'daterange'\n };\n event.attributes = parseAttributes(match[1]);\n ['ID', 'CLASS'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = String(event.attributes[key]);\n }\n });\n ['START-DATE', 'END-DATE'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = new Date(event.attributes[key]);\n }\n });\n ['DURATION', 'PLANNED-DURATION'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = parseFloat(event.attributes[key]);\n }\n });\n ['END-ON-NEXT'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = /YES/i.test(event.attributes[key]);\n }\n });\n ['SCTE35-CMD', ' SCTE35-OUT', 'SCTE35-IN'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = event.attributes[key].toString(16);\n }\n });\n const clientAttributePattern = /^X-([A-Z]+-)+[A-Z]+$/;\n\n for (const key in event.attributes) {\n if (!clientAttributePattern.test(key)) {\n continue;\n }\n\n const isHexaDecimal = /[0-9A-Fa-f]{6}/g.test(event.attributes[key]);\n const isDecimalFloating = /^\\d+(\\.\\d+)?$/.test(event.attributes[key]);\n event.attributes[key] = isHexaDecimal ? event.attributes[key].toString(16) : isDecimalFloating ? parseFloat(event.attributes[key]) : String(event.attributes[key]);\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-INDEPENDENT-SEGMENTS/.exec(newLine);\n\n if (match) {\n this.trigger('data', {\n type: 'tag',\n tagType: 'independent-segments'\n });\n return;\n } // unknown tag type\n\n\n this.trigger('data', {\n type: 'tag',\n data: newLine.slice(4)\n });\n });\n }\n /**\n * Add a parser for custom headers\n *\n * @param {Object} options a map of options for the added parser\n * @param {RegExp} options.expression a regular expression to match the custom header\n * @param {string} options.customType the custom type to register to the output\n * @param {Function} [options.dataParser] function to parse the line into an object\n * @param {boolean} [options.segment] should tag data be attached to the segment object\n */\n\n\n addParser({\n expression,\n customType,\n dataParser,\n segment\n }) {\n if (typeof dataParser !== 'function') {\n dataParser = line => line;\n }\n\n this.customParsers.push(line => {\n const match = expression.exec(line);\n\n if (match) {\n this.trigger('data', {\n type: 'custom',\n data: dataParser(line),\n customType,\n segment\n });\n return true;\n }\n });\n }\n /**\n * Add a custom header mapper\n *\n * @param {Object} options\n * @param {RegExp} options.expression a regular expression to match the custom header\n * @param {Function} options.map function to translate tag into a different tag\n */\n\n\n addTagMapper({\n expression,\n map\n }) {\n const mapFn = line => {\n if (expression.test(line)) {\n return map(line);\n }\n\n return line;\n };\n\n this.tagMappers.push(mapFn);\n }\n\n}\n\nconst camelCase = str => str.toLowerCase().replace(/-(\\w)/g, a => a[1].toUpperCase());\n\nconst camelCaseKeys = function (attributes) {\n const result = {};\n Object.keys(attributes).forEach(function (key) {\n result[camelCase(key)] = attributes[key];\n });\n return result;\n}; // set SERVER-CONTROL hold back based upon targetDuration and partTargetDuration\n// we need this helper because defaults are based upon targetDuration and\n// partTargetDuration being set, but they may not be if SERVER-CONTROL appears before\n// target durations are set.\n\n\nconst setHoldBack = function (manifest) {\n const {\n serverControl,\n targetDuration,\n partTargetDuration\n } = manifest;\n\n if (!serverControl) {\n return;\n }\n\n const tag = '#EXT-X-SERVER-CONTROL';\n const hb = 'holdBack';\n const phb = 'partHoldBack';\n const minTargetDuration = targetDuration && targetDuration * 3;\n const minPartDuration = partTargetDuration && partTargetDuration * 2;\n\n if (targetDuration && !serverControl.hasOwnProperty(hb)) {\n serverControl[hb] = minTargetDuration;\n this.trigger('info', {\n message: `${tag} defaulting HOLD-BACK to targetDuration * 3 (${minTargetDuration}).`\n });\n }\n\n if (minTargetDuration && serverControl[hb] < minTargetDuration) {\n this.trigger('warn', {\n message: `${tag} clamping HOLD-BACK (${serverControl[hb]}) to targetDuration * 3 (${minTargetDuration})`\n });\n serverControl[hb] = minTargetDuration;\n } // default no part hold back to part target duration * 3\n\n\n if (partTargetDuration && !serverControl.hasOwnProperty(phb)) {\n serverControl[phb] = partTargetDuration * 3;\n this.trigger('info', {\n message: `${tag} defaulting PART-HOLD-BACK to partTargetDuration * 3 (${serverControl[phb]}).`\n });\n } // if part hold back is too small default it to part target duration * 2\n\n\n if (partTargetDuration && serverControl[phb] < minPartDuration) {\n this.trigger('warn', {\n message: `${tag} clamping PART-HOLD-BACK (${serverControl[phb]}) to partTargetDuration * 2 (${minPartDuration}).`\n });\n serverControl[phb] = minPartDuration;\n }\n};\n/**\n * A parser for M3U8 files. The current interpretation of the input is\n * exposed as a property `manifest` on parser objects. It's just two lines to\n * create and parse a manifest once you have the contents available as a string:\n *\n * ```js\n * var parser = new m3u8.Parser();\n * parser.push(xhr.responseText);\n * ```\n *\n * New input can later be applied to update the manifest object by calling\n * `push` again.\n *\n * The parser attempts to create a usable manifest object even if the\n * underlying input is somewhat nonsensical. It emits `info` and `warning`\n * events during the parse if it encounters input that seems invalid or\n * requires some property of the manifest object to be defaulted.\n *\n * @class Parser\n * @extends Stream\n */\n\n\nclass Parser extends Stream {\n constructor() {\n super();\n this.lineStream = new LineStream();\n this.parseStream = new ParseStream();\n this.lineStream.pipe(this.parseStream);\n /* eslint-disable consistent-this */\n\n const self = this;\n /* eslint-enable consistent-this */\n\n const uris = [];\n let currentUri = {}; // if specified, the active EXT-X-MAP definition\n\n let currentMap; // if specified, the active decryption key\n\n let key;\n let hasParts = false;\n\n const noop = function () {};\n\n const defaultMediaGroups = {\n 'AUDIO': {},\n 'VIDEO': {},\n 'CLOSED-CAPTIONS': {},\n 'SUBTITLES': {}\n }; // This is the Widevine UUID from DASH IF IOP. The same exact string is\n // used in MPDs with Widevine encrypted streams.\n\n const widevineUuid = 'urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed'; // group segments into numbered timelines delineated by discontinuities\n\n let currentTimeline = 0; // the manifest is empty until the parse stream begins delivering data\n\n this.manifest = {\n allowCache: true,\n discontinuityStarts: [],\n segments: []\n }; // keep track of the last seen segment's byte range end, as segments are not required\n // to provide the offset, in which case it defaults to the next byte after the\n // previous segment\n\n let lastByterangeEnd = 0; // keep track of the last seen part's byte range end.\n\n let lastPartByterangeEnd = 0;\n const daterangeTags = {};\n this.on('end', () => {\n // only add preloadSegment if we don't yet have a uri for it.\n // and we actually have parts/preloadHints\n if (currentUri.uri || !currentUri.parts && !currentUri.preloadHints) {\n return;\n }\n\n if (!currentUri.map && currentMap) {\n currentUri.map = currentMap;\n }\n\n if (!currentUri.key && key) {\n currentUri.key = key;\n }\n\n if (!currentUri.timeline && typeof currentTimeline === 'number') {\n currentUri.timeline = currentTimeline;\n }\n\n this.manifest.preloadSegment = currentUri;\n }); // update the manifest with the m3u8 entry from the parse stream\n\n this.parseStream.on('data', function (entry) {\n let mediaGroup;\n let rendition;\n ({\n tag() {\n // switch based on the tag type\n (({\n version() {\n if (entry.version) {\n this.manifest.version = entry.version;\n }\n },\n\n 'allow-cache'() {\n this.manifest.allowCache = entry.allowed;\n\n if (!('allowed' in entry)) {\n this.trigger('info', {\n message: 'defaulting allowCache to YES'\n });\n this.manifest.allowCache = true;\n }\n },\n\n byterange() {\n const byterange = {};\n\n if ('length' in entry) {\n currentUri.byterange = byterange;\n byterange.length = entry.length;\n\n if (!('offset' in entry)) {\n /*\n * From the latest spec (as of this writing):\n * https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.2.2\n *\n * Same text since EXT-X-BYTERANGE's introduction in draft 7:\n * https://tools.ietf.org/html/draft-pantos-http-live-streaming-07#section-3.3.1)\n *\n * \"If o [offset] is not present, the sub-range begins at the next byte\n * following the sub-range of the previous media segment.\"\n */\n entry.offset = lastByterangeEnd;\n }\n }\n\n if ('offset' in entry) {\n currentUri.byterange = byterange;\n byterange.offset = entry.offset;\n }\n\n lastByterangeEnd = byterange.offset + byterange.length;\n },\n\n endlist() {\n this.manifest.endList = true;\n },\n\n inf() {\n if (!('mediaSequence' in this.manifest)) {\n this.manifest.mediaSequence = 0;\n this.trigger('info', {\n message: 'defaulting media sequence to zero'\n });\n }\n\n if (!('discontinuitySequence' in this.manifest)) {\n this.manifest.discontinuitySequence = 0;\n this.trigger('info', {\n message: 'defaulting discontinuity sequence to zero'\n });\n }\n\n if (entry.duration > 0) {\n currentUri.duration = entry.duration;\n }\n\n if (entry.duration === 0) {\n currentUri.duration = 0.01;\n this.trigger('info', {\n message: 'updating zero segment duration to a small value'\n });\n }\n\n this.manifest.segments = uris;\n },\n\n key() {\n if (!entry.attributes) {\n this.trigger('warn', {\n message: 'ignoring key declaration without attribute list'\n });\n return;\n } // clear the active encryption key\n\n\n if (entry.attributes.METHOD === 'NONE') {\n key = null;\n return;\n }\n\n if (!entry.attributes.URI) {\n this.trigger('warn', {\n message: 'ignoring key declaration without URI'\n });\n return;\n }\n\n if (entry.attributes.KEYFORMAT === 'com.apple.streamingkeydelivery') {\n this.manifest.contentProtection = this.manifest.contentProtection || {}; // TODO: add full support for this.\n\n this.manifest.contentProtection['com.apple.fps.1_0'] = {\n attributes: entry.attributes\n };\n return;\n }\n\n if (entry.attributes.KEYFORMAT === 'com.microsoft.playready') {\n this.manifest.contentProtection = this.manifest.contentProtection || {}; // TODO: add full support for this.\n\n this.manifest.contentProtection['com.microsoft.playready'] = {\n uri: entry.attributes.URI\n };\n return;\n } // check if the content is encrypted for Widevine\n // Widevine/HLS spec: https://storage.googleapis.com/wvdocs/Widevine_DRM_HLS.pdf\n\n\n if (entry.attributes.KEYFORMAT === widevineUuid) {\n const VALID_METHODS = ['SAMPLE-AES', 'SAMPLE-AES-CTR', 'SAMPLE-AES-CENC'];\n\n if (VALID_METHODS.indexOf(entry.attributes.METHOD) === -1) {\n this.trigger('warn', {\n message: 'invalid key method provided for Widevine'\n });\n return;\n }\n\n if (entry.attributes.METHOD === 'SAMPLE-AES-CENC') {\n this.trigger('warn', {\n message: 'SAMPLE-AES-CENC is deprecated, please use SAMPLE-AES-CTR instead'\n });\n }\n\n if (entry.attributes.URI.substring(0, 23) !== 'data:text/plain;base64,') {\n this.trigger('warn', {\n message: 'invalid key URI provided for Widevine'\n });\n return;\n }\n\n if (!(entry.attributes.KEYID && entry.attributes.KEYID.substring(0, 2) === '0x')) {\n this.trigger('warn', {\n message: 'invalid key ID provided for Widevine'\n });\n return;\n } // if Widevine key attributes are valid, store them as `contentProtection`\n // on the manifest to emulate Widevine tag structure in a DASH mpd\n\n\n this.manifest.contentProtection = this.manifest.contentProtection || {};\n this.manifest.contentProtection['com.widevine.alpha'] = {\n attributes: {\n schemeIdUri: entry.attributes.KEYFORMAT,\n // remove '0x' from the key id string\n keyId: entry.attributes.KEYID.substring(2)\n },\n // decode the base64-encoded PSSH box\n pssh: decodeB64ToUint8Array(entry.attributes.URI.split(',')[1])\n };\n return;\n }\n\n if (!entry.attributes.METHOD) {\n this.trigger('warn', {\n message: 'defaulting key method to AES-128'\n });\n } // setup an encryption key for upcoming segments\n\n\n key = {\n method: entry.attributes.METHOD || 'AES-128',\n uri: entry.attributes.URI\n };\n\n if (typeof entry.attributes.IV !== 'undefined') {\n key.iv = entry.attributes.IV;\n }\n },\n\n 'media-sequence'() {\n if (!isFinite(entry.number)) {\n this.trigger('warn', {\n message: 'ignoring invalid media sequence: ' + entry.number\n });\n return;\n }\n\n this.manifest.mediaSequence = entry.number;\n },\n\n 'discontinuity-sequence'() {\n if (!isFinite(entry.number)) {\n this.trigger('warn', {\n message: 'ignoring invalid discontinuity sequence: ' + entry.number\n });\n return;\n }\n\n this.manifest.discontinuitySequence = entry.number;\n currentTimeline = entry.number;\n },\n\n 'playlist-type'() {\n if (!/VOD|EVENT/.test(entry.playlistType)) {\n this.trigger('warn', {\n message: 'ignoring unknown playlist type: ' + entry.playlist\n });\n return;\n }\n\n this.manifest.playlistType = entry.playlistType;\n },\n\n map() {\n currentMap = {};\n\n if (entry.uri) {\n currentMap.uri = entry.uri;\n }\n\n if (entry.byterange) {\n currentMap.byterange = entry.byterange;\n }\n\n if (key) {\n currentMap.key = key;\n }\n },\n\n 'stream-inf'() {\n this.manifest.playlists = uris;\n this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups;\n\n if (!entry.attributes) {\n this.trigger('warn', {\n message: 'ignoring empty stream-inf attributes'\n });\n return;\n }\n\n if (!currentUri.attributes) {\n currentUri.attributes = {};\n }\n\n _extends(currentUri.attributes, entry.attributes);\n },\n\n media() {\n this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups;\n\n if (!(entry.attributes && entry.attributes.TYPE && entry.attributes['GROUP-ID'] && entry.attributes.NAME)) {\n this.trigger('warn', {\n message: 'ignoring incomplete or missing media group'\n });\n return;\n } // find the media group, creating defaults as necessary\n\n\n const mediaGroupType = this.manifest.mediaGroups[entry.attributes.TYPE];\n mediaGroupType[entry.attributes['GROUP-ID']] = mediaGroupType[entry.attributes['GROUP-ID']] || {};\n mediaGroup = mediaGroupType[entry.attributes['GROUP-ID']]; // collect the rendition metadata\n\n rendition = {\n default: /yes/i.test(entry.attributes.DEFAULT)\n };\n\n if (rendition.default) {\n rendition.autoselect = true;\n } else {\n rendition.autoselect = /yes/i.test(entry.attributes.AUTOSELECT);\n }\n\n if (entry.attributes.LANGUAGE) {\n rendition.language = entry.attributes.LANGUAGE;\n }\n\n if (entry.attributes.URI) {\n rendition.uri = entry.attributes.URI;\n }\n\n if (entry.attributes['INSTREAM-ID']) {\n rendition.instreamId = entry.attributes['INSTREAM-ID'];\n }\n\n if (entry.attributes.CHARACTERISTICS) {\n rendition.characteristics = entry.attributes.CHARACTERISTICS;\n }\n\n if (entry.attributes.FORCED) {\n rendition.forced = /yes/i.test(entry.attributes.FORCED);\n } // insert the new rendition\n\n\n mediaGroup[entry.attributes.NAME] = rendition;\n },\n\n discontinuity() {\n currentTimeline += 1;\n currentUri.discontinuity = true;\n this.manifest.discontinuityStarts.push(uris.length);\n },\n\n 'program-date-time'() {\n if (typeof this.manifest.dateTimeString === 'undefined') {\n // PROGRAM-DATE-TIME is a media-segment tag, but for backwards\n // compatibility, we add the first occurence of the PROGRAM-DATE-TIME tag\n // to the manifest object\n // TODO: Consider removing this in future major version\n this.manifest.dateTimeString = entry.dateTimeString;\n this.manifest.dateTimeObject = entry.dateTimeObject;\n }\n\n currentUri.dateTimeString = entry.dateTimeString;\n currentUri.dateTimeObject = entry.dateTimeObject;\n },\n\n targetduration() {\n if (!isFinite(entry.duration) || entry.duration < 0) {\n this.trigger('warn', {\n message: 'ignoring invalid target duration: ' + entry.duration\n });\n return;\n }\n\n this.manifest.targetDuration = entry.duration;\n setHoldBack.call(this, this.manifest);\n },\n\n start() {\n if (!entry.attributes || isNaN(entry.attributes['TIME-OFFSET'])) {\n this.trigger('warn', {\n message: 'ignoring start declaration without appropriate attribute list'\n });\n return;\n }\n\n this.manifest.start = {\n timeOffset: entry.attributes['TIME-OFFSET'],\n precise: entry.attributes.PRECISE\n };\n },\n\n 'cue-out'() {\n currentUri.cueOut = entry.data;\n },\n\n 'cue-out-cont'() {\n currentUri.cueOutCont = entry.data;\n },\n\n 'cue-in'() {\n currentUri.cueIn = entry.data;\n },\n\n 'skip'() {\n this.manifest.skip = camelCaseKeys(entry.attributes);\n this.warnOnMissingAttributes_('#EXT-X-SKIP', entry.attributes, ['SKIPPED-SEGMENTS']);\n },\n\n 'part'() {\n hasParts = true; // parts are always specifed before a segment\n\n const segmentIndex = this.manifest.segments.length;\n const part = camelCaseKeys(entry.attributes);\n currentUri.parts = currentUri.parts || [];\n currentUri.parts.push(part);\n\n if (part.byterange) {\n if (!part.byterange.hasOwnProperty('offset')) {\n part.byterange.offset = lastPartByterangeEnd;\n }\n\n lastPartByterangeEnd = part.byterange.offset + part.byterange.length;\n }\n\n const partIndex = currentUri.parts.length - 1;\n this.warnOnMissingAttributes_(`#EXT-X-PART #${partIndex} for segment #${segmentIndex}`, entry.attributes, ['URI', 'DURATION']);\n\n if (this.manifest.renditionReports) {\n this.manifest.renditionReports.forEach((r, i) => {\n if (!r.hasOwnProperty('lastPart')) {\n this.trigger('warn', {\n message: `#EXT-X-RENDITION-REPORT #${i} lacks required attribute(s): LAST-PART`\n });\n }\n });\n }\n },\n\n 'server-control'() {\n const attrs = this.manifest.serverControl = camelCaseKeys(entry.attributes);\n\n if (!attrs.hasOwnProperty('canBlockReload')) {\n attrs.canBlockReload = false;\n this.trigger('info', {\n message: '#EXT-X-SERVER-CONTROL defaulting CAN-BLOCK-RELOAD to false'\n });\n }\n\n setHoldBack.call(this, this.manifest);\n\n if (attrs.canSkipDateranges && !attrs.hasOwnProperty('canSkipUntil')) {\n this.trigger('warn', {\n message: '#EXT-X-SERVER-CONTROL lacks required attribute CAN-SKIP-UNTIL which is required when CAN-SKIP-DATERANGES is set'\n });\n }\n },\n\n 'preload-hint'() {\n // parts are always specifed before a segment\n const segmentIndex = this.manifest.segments.length;\n const hint = camelCaseKeys(entry.attributes);\n const isPart = hint.type && hint.type === 'PART';\n currentUri.preloadHints = currentUri.preloadHints || [];\n currentUri.preloadHints.push(hint);\n\n if (hint.byterange) {\n if (!hint.byterange.hasOwnProperty('offset')) {\n // use last part byterange end or zero if not a part.\n hint.byterange.offset = isPart ? lastPartByterangeEnd : 0;\n\n if (isPart) {\n lastPartByterangeEnd = hint.byterange.offset + hint.byterange.length;\n }\n }\n }\n\n const index = currentUri.preloadHints.length - 1;\n this.warnOnMissingAttributes_(`#EXT-X-PRELOAD-HINT #${index} for segment #${segmentIndex}`, entry.attributes, ['TYPE', 'URI']);\n\n if (!hint.type) {\n return;\n } // search through all preload hints except for the current one for\n // a duplicate type.\n\n\n for (let i = 0; i < currentUri.preloadHints.length - 1; i++) {\n const otherHint = currentUri.preloadHints[i];\n\n if (!otherHint.type) {\n continue;\n }\n\n if (otherHint.type === hint.type) {\n this.trigger('warn', {\n message: `#EXT-X-PRELOAD-HINT #${index} for segment #${segmentIndex} has the same TYPE ${hint.type} as preload hint #${i}`\n });\n }\n }\n },\n\n 'rendition-report'() {\n const report = camelCaseKeys(entry.attributes);\n this.manifest.renditionReports = this.manifest.renditionReports || [];\n this.manifest.renditionReports.push(report);\n const index = this.manifest.renditionReports.length - 1;\n const required = ['LAST-MSN', 'URI'];\n\n if (hasParts) {\n required.push('LAST-PART');\n }\n\n this.warnOnMissingAttributes_(`#EXT-X-RENDITION-REPORT #${index}`, entry.attributes, required);\n },\n\n 'part-inf'() {\n this.manifest.partInf = camelCaseKeys(entry.attributes);\n this.warnOnMissingAttributes_('#EXT-X-PART-INF', entry.attributes, ['PART-TARGET']);\n\n if (this.manifest.partInf.partTarget) {\n this.manifest.partTargetDuration = this.manifest.partInf.partTarget;\n }\n\n setHoldBack.call(this, this.manifest);\n },\n\n 'daterange'() {\n this.manifest.daterange = this.manifest.daterange || [];\n this.manifest.daterange.push(camelCaseKeys(entry.attributes));\n const index = this.manifest.daterange.length - 1;\n this.warnOnMissingAttributes_(`#EXT-X-DATERANGE #${index}`, entry.attributes, ['ID', 'START-DATE']);\n const daterange = this.manifest.daterange[index];\n\n if (daterange.endDate && daterange.startDate && new Date(daterange.endDate) < new Date(daterange.startDate)) {\n this.trigger('warn', {\n message: 'EXT-X-DATERANGE END-DATE must be equal to or later than the value of the START-DATE'\n });\n }\n\n if (daterange.duration && daterange.duration < 0) {\n this.trigger('warn', {\n message: 'EXT-X-DATERANGE DURATION must not be negative'\n });\n }\n\n if (daterange.plannedDuration && daterange.plannedDuration < 0) {\n this.trigger('warn', {\n message: 'EXT-X-DATERANGE PLANNED-DURATION must not be negative'\n });\n }\n\n const endOnNextYes = !!daterange.endOnNext;\n\n if (endOnNextYes && !daterange.class) {\n this.trigger('warn', {\n message: 'EXT-X-DATERANGE with an END-ON-NEXT=YES attribute must have a CLASS attribute'\n });\n }\n\n if (endOnNextYes && (daterange.duration || daterange.endDate)) {\n this.trigger('warn', {\n message: 'EXT-X-DATERANGE with an END-ON-NEXT=YES attribute must not contain DURATION or END-DATE attributes'\n });\n }\n\n if (daterange.duration && daterange.endDate) {\n const startDate = daterange.startDate;\n const newDateInSeconds = startDate.setSeconds(startDate.getSeconds() + daterange.duration);\n this.manifest.daterange[index].endDate = new Date(newDateInSeconds);\n }\n\n if (daterange && !this.manifest.dateTimeString) {\n this.trigger('warn', {\n message: 'A playlist with EXT-X-DATERANGE tag must contain atleast one EXT-X-PROGRAM-DATE-TIME tag'\n });\n }\n\n if (!daterangeTags[daterange.id]) {\n daterangeTags[daterange.id] = daterange;\n } else {\n for (const attribute in daterangeTags[daterange.id]) {\n if (daterangeTags[daterange.id][attribute] !== daterange[attribute]) {\n this.trigger('warn', {\n message: 'EXT-X-DATERANGE tags with the same ID in a playlist must have the same attributes and same attribute values'\n });\n break;\n }\n }\n }\n },\n\n 'independent-segments'() {\n this.manifest.independentSegments = true;\n }\n\n })[entry.tagType] || noop).call(self);\n },\n\n uri() {\n currentUri.uri = entry.uri;\n uris.push(currentUri); // if no explicit duration was declared, use the target duration\n\n if (this.manifest.targetDuration && !('duration' in currentUri)) {\n this.trigger('warn', {\n message: 'defaulting segment duration to the target duration'\n });\n currentUri.duration = this.manifest.targetDuration;\n } // annotate with encryption information, if necessary\n\n\n if (key) {\n currentUri.key = key;\n }\n\n currentUri.timeline = currentTimeline; // annotate with initialization segment information, if necessary\n\n if (currentMap) {\n currentUri.map = currentMap;\n } // reset the last byterange end as it needs to be 0 between parts\n\n\n lastPartByterangeEnd = 0; // prepare for the next URI\n\n currentUri = {};\n },\n\n comment() {// comments are not important for playback\n },\n\n custom() {\n // if this is segment-level data attach the output to the segment\n if (entry.segment) {\n currentUri.custom = currentUri.custom || {};\n currentUri.custom[entry.customType] = entry.data; // if this is manifest-level data attach to the top level manifest object\n } else {\n this.manifest.custom = this.manifest.custom || {};\n this.manifest.custom[entry.customType] = entry.data;\n }\n }\n\n })[entry.type].call(self);\n });\n }\n\n warnOnMissingAttributes_(identifier, attributes, required) {\n const missing = [];\n required.forEach(function (key) {\n if (!attributes.hasOwnProperty(key)) {\n missing.push(key);\n }\n });\n\n if (missing.length) {\n this.trigger('warn', {\n message: `${identifier} lacks required attribute(s): ${missing.join(', ')}`\n });\n }\n }\n /**\n * Parse the input string and update the manifest object.\n *\n * @param {string} chunk a potentially incomplete portion of the manifest\n */\n\n\n push(chunk) {\n this.lineStream.push(chunk);\n }\n /**\n * Flush any remaining input. This can be handy if the last line of an M3U8\n * manifest did not contain a trailing newline but the file has been\n * completely received.\n */\n\n\n end() {\n // flush any buffered input\n this.lineStream.push('\\n');\n this.trigger('end');\n }\n /**\n * Add an additional parser for non-standard tags\n *\n * @param {Object} options a map of options for the added parser\n * @param {RegExp} options.expression a regular expression to match the custom header\n * @param {string} options.type the type to register to the output\n * @param {Function} [options.dataParser] function to parse the line into an object\n * @param {boolean} [options.segment] should tag data be attached to the segment object\n */\n\n\n addParser(options) {\n this.parseStream.addParser(options);\n }\n /**\n * Add a custom header mapper\n *\n * @param {Object} options\n * @param {RegExp} options.expression a regular expression to match the custom header\n * @param {Function} options.map function to translate tag into a different tag\n */\n\n\n addTagMapper(options) {\n this.parseStream.addTagMapper(options);\n }\n\n}\n\nexport { LineStream, ParseStream, Parser };\n","import window from 'global/window';\n\nvar atob = function atob(s) {\n return window.atob ? window.atob(s) : Buffer.from(s, 'base64').toString('binary');\n};\n\nexport default function decodeB64ToUint8Array(b64Text) {\n var decodedString = atob(b64Text);\n var array = new Uint8Array(decodedString.length);\n\n for (var i = 0; i < decodedString.length; i++) {\n array[i] = decodedString.charCodeAt(i);\n }\n\n return array;\n}","/**\n * @file stream.js\n */\n\n/**\n * A lightweight readable stream implemention that handles event dispatching.\n *\n * @class Stream\n */\nvar Stream = /*#__PURE__*/function () {\n function Stream() {\n this.listeners = {};\n }\n /**\n * Add a listener for a specified event type.\n *\n * @param {string} type the event name\n * @param {Function} listener the callback to be invoked when an event of\n * the specified type occurs\n */\n\n\n var _proto = Stream.prototype;\n\n _proto.on = function on(type, listener) {\n if (!this.listeners[type]) {\n this.listeners[type] = [];\n }\n\n this.listeners[type].push(listener);\n }\n /**\n * Remove a listener for a specified event type.\n *\n * @param {string} type the event name\n * @param {Function} listener a function previously registered for this\n * type of event through `on`\n * @return {boolean} if we could turn it off or not\n */\n ;\n\n _proto.off = function off(type, listener) {\n if (!this.listeners[type]) {\n return false;\n }\n\n var index = this.listeners[type].indexOf(listener); // TODO: which is better?\n // In Video.js we slice listener functions\n // on trigger so that it does not mess up the order\n // while we loop through.\n //\n // Here we slice on off so that the loop in trigger\n // can continue using it's old reference to loop without\n // messing up the order.\n\n this.listeners[type] = this.listeners[type].slice(0);\n this.listeners[type].splice(index, 1);\n return index > -1;\n }\n /**\n * Trigger an event of the specified type on this stream. Any additional\n * arguments to this function are passed as parameters to event listeners.\n *\n * @param {string} type the event name\n */\n ;\n\n _proto.trigger = function trigger(type) {\n var callbacks = this.listeners[type];\n\n if (!callbacks) {\n return;\n } // Slicing the arguments on every invocation of this method\n // can add a significant amount of overhead. Avoid the\n // intermediate object creation for the common case of a\n // single callback argument\n\n\n if (arguments.length === 2) {\n var length = callbacks.length;\n\n for (var i = 0; i < length; ++i) {\n callbacks[i].call(this, arguments[1]);\n }\n } else {\n var args = Array.prototype.slice.call(arguments, 1);\n var _length = callbacks.length;\n\n for (var _i = 0; _i < _length; ++_i) {\n callbacks[_i].apply(this, args);\n }\n }\n }\n /**\n * Destroys the stream and cleans up.\n */\n ;\n\n _proto.dispose = function dispose() {\n this.listeners = {};\n }\n /**\n * Forwards all `data` events on this stream to the destination stream. The\n * destination stream should provide a method `push` to receive the data\n * events as they arrive.\n *\n * @param {Stream} destination the stream that will receive all `data` events\n * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options\n */\n ;\n\n _proto.pipe = function pipe(destination) {\n this.on('data', function (data) {\n destination.push(data);\n });\n };\n\n return Stream;\n}();\n\nexport { Stream as default };","/*! @name mpd-parser @version 1.2.2 @license Apache-2.0 */\nimport resolveUrl from '@videojs/vhs-utils/es/resolve-url';\nimport window from 'global/window';\nimport { forEachMediaGroup } from '@videojs/vhs-utils/es/media-groups';\nimport decodeB64ToUint8Array from '@videojs/vhs-utils/es/decode-b64-to-uint8-array';\nimport { DOMParser } from '@xmldom/xmldom';\n\nvar version = \"1.2.2\";\n\nconst isObject = obj => {\n return !!obj && typeof obj === 'object';\n};\n\nconst merge = (...objects) => {\n return objects.reduce((result, source) => {\n if (typeof source !== 'object') {\n return result;\n }\n\n Object.keys(source).forEach(key => {\n if (Array.isArray(result[key]) && Array.isArray(source[key])) {\n result[key] = result[key].concat(source[key]);\n } else if (isObject(result[key]) && isObject(source[key])) {\n result[key] = merge(result[key], source[key]);\n } else {\n result[key] = source[key];\n }\n });\n return result;\n }, {});\n};\nconst values = o => Object.keys(o).map(k => o[k]);\n\nconst range = (start, end) => {\n const result = [];\n\n for (let i = start; i < end; i++) {\n result.push(i);\n }\n\n return result;\n};\nconst flatten = lists => lists.reduce((x, y) => x.concat(y), []);\nconst from = list => {\n if (!list.length) {\n return [];\n }\n\n const result = [];\n\n for (let i = 0; i < list.length; i++) {\n result.push(list[i]);\n }\n\n return result;\n};\nconst findIndexes = (l, key) => l.reduce((a, e, i) => {\n if (e[key]) {\n a.push(i);\n }\n\n return a;\n}, []);\n/**\n * Returns a union of the included lists provided each element can be identified by a key.\n *\n * @param {Array} list - list of lists to get the union of\n * @param {Function} keyFunction - the function to use as a key for each element\n *\n * @return {Array} the union of the arrays\n */\n\nconst union = (lists, keyFunction) => {\n return values(lists.reduce((acc, list) => {\n list.forEach(el => {\n acc[keyFunction(el)] = el;\n });\n return acc;\n }, {}));\n};\n\nvar errors = {\n INVALID_NUMBER_OF_PERIOD: 'INVALID_NUMBER_OF_PERIOD',\n INVALID_NUMBER_OF_CONTENT_STEERING: 'INVALID_NUMBER_OF_CONTENT_STEERING',\n DASH_EMPTY_MANIFEST: 'DASH_EMPTY_MANIFEST',\n DASH_INVALID_XML: 'DASH_INVALID_XML',\n NO_BASE_URL: 'NO_BASE_URL',\n MISSING_SEGMENT_INFORMATION: 'MISSING_SEGMENT_INFORMATION',\n SEGMENT_TIME_UNSPECIFIED: 'SEGMENT_TIME_UNSPECIFIED',\n UNSUPPORTED_UTC_TIMING_SCHEME: 'UNSUPPORTED_UTC_TIMING_SCHEME'\n};\n\n/**\n * @typedef {Object} SingleUri\n * @property {string} uri - relative location of segment\n * @property {string} resolvedUri - resolved location of segment\n * @property {Object} byterange - Object containing information on how to make byte range\n * requests following byte-range-spec per RFC2616.\n * @property {String} byterange.length - length of range request\n * @property {String} byterange.offset - byte offset of range request\n *\n * @see https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35.1\n */\n\n/**\n * Converts a URLType node (5.3.9.2.3 Table 13) to a segment object\n * that conforms to how m3u8-parser is structured\n *\n * @see https://github.com/videojs/m3u8-parser\n *\n * @param {string} baseUrl - baseUrl provided by nodes\n * @param {string} source - source url for segment\n * @param {string} range - optional range used for range calls,\n * follows RFC 2616, Clause 14.35.1\n * @return {SingleUri} full segment information transformed into a format similar\n * to m3u8-parser\n */\n\nconst urlTypeToSegment = ({\n baseUrl = '',\n source = '',\n range = '',\n indexRange = ''\n}) => {\n const segment = {\n uri: source,\n resolvedUri: resolveUrl(baseUrl || '', source)\n };\n\n if (range || indexRange) {\n const rangeStr = range ? range : indexRange;\n const ranges = rangeStr.split('-'); // default to parsing this as a BigInt if possible\n\n let startRange = window.BigInt ? window.BigInt(ranges[0]) : parseInt(ranges[0], 10);\n let endRange = window.BigInt ? window.BigInt(ranges[1]) : parseInt(ranges[1], 10); // convert back to a number if less than MAX_SAFE_INTEGER\n\n if (startRange < Number.MAX_SAFE_INTEGER && typeof startRange === 'bigint') {\n startRange = Number(startRange);\n }\n\n if (endRange < Number.MAX_SAFE_INTEGER && typeof endRange === 'bigint') {\n endRange = Number(endRange);\n }\n\n let length;\n\n if (typeof endRange === 'bigint' || typeof startRange === 'bigint') {\n length = window.BigInt(endRange) - window.BigInt(startRange) + window.BigInt(1);\n } else {\n length = endRange - startRange + 1;\n }\n\n if (typeof length === 'bigint' && length < Number.MAX_SAFE_INTEGER) {\n length = Number(length);\n } // byterange should be inclusive according to\n // RFC 2616, Clause 14.35.1\n\n\n segment.byterange = {\n length,\n offset: startRange\n };\n }\n\n return segment;\n};\nconst byteRangeToString = byterange => {\n // `endRange` is one less than `offset + length` because the HTTP range\n // header uses inclusive ranges\n let endRange;\n\n if (typeof byterange.offset === 'bigint' || typeof byterange.length === 'bigint') {\n endRange = window.BigInt(byterange.offset) + window.BigInt(byterange.length) - window.BigInt(1);\n } else {\n endRange = byterange.offset + byterange.length - 1;\n }\n\n return `${byterange.offset}-${endRange}`;\n};\n\n/**\n * parse the end number attribue that can be a string\n * number, or undefined.\n *\n * @param {string|number|undefined} endNumber\n * The end number attribute.\n *\n * @return {number|null}\n * The result of parsing the end number.\n */\n\nconst parseEndNumber = endNumber => {\n if (endNumber && typeof endNumber !== 'number') {\n endNumber = parseInt(endNumber, 10);\n }\n\n if (isNaN(endNumber)) {\n return null;\n }\n\n return endNumber;\n};\n/**\n * Functions for calculating the range of available segments in static and dynamic\n * manifests.\n */\n\n\nconst segmentRange = {\n /**\n * Returns the entire range of available segments for a static MPD\n *\n * @param {Object} attributes\n * Inheritied MPD attributes\n * @return {{ start: number, end: number }}\n * The start and end numbers for available segments\n */\n static(attributes) {\n const {\n duration,\n timescale = 1,\n sourceDuration,\n periodDuration\n } = attributes;\n const endNumber = parseEndNumber(attributes.endNumber);\n const segmentDuration = duration / timescale;\n\n if (typeof endNumber === 'number') {\n return {\n start: 0,\n end: endNumber\n };\n }\n\n if (typeof periodDuration === 'number') {\n return {\n start: 0,\n end: periodDuration / segmentDuration\n };\n }\n\n return {\n start: 0,\n end: sourceDuration / segmentDuration\n };\n },\n\n /**\n * Returns the current live window range of available segments for a dynamic MPD\n *\n * @param {Object} attributes\n * Inheritied MPD attributes\n * @return {{ start: number, end: number }}\n * The start and end numbers for available segments\n */\n dynamic(attributes) {\n const {\n NOW,\n clientOffset,\n availabilityStartTime,\n timescale = 1,\n duration,\n periodStart = 0,\n minimumUpdatePeriod = 0,\n timeShiftBufferDepth = Infinity\n } = attributes;\n const endNumber = parseEndNumber(attributes.endNumber); // clientOffset is passed in at the top level of mpd-parser and is an offset calculated\n // after retrieving UTC server time.\n\n const now = (NOW + clientOffset) / 1000; // WC stands for Wall Clock.\n // Convert the period start time to EPOCH.\n\n const periodStartWC = availabilityStartTime + periodStart; // Period end in EPOCH is manifest's retrieval time + time until next update.\n\n const periodEndWC = now + minimumUpdatePeriod;\n const periodDuration = periodEndWC - periodStartWC;\n const segmentCount = Math.ceil(periodDuration * timescale / duration);\n const availableStart = Math.floor((now - periodStartWC - timeShiftBufferDepth) * timescale / duration);\n const availableEnd = Math.floor((now - periodStartWC) * timescale / duration);\n return {\n start: Math.max(0, availableStart),\n end: typeof endNumber === 'number' ? endNumber : Math.min(segmentCount, availableEnd)\n };\n }\n\n};\n/**\n * Maps a range of numbers to objects with information needed to build the corresponding\n * segment list\n *\n * @name toSegmentsCallback\n * @function\n * @param {number} number\n * Number of the segment\n * @param {number} index\n * Index of the number in the range list\n * @return {{ number: Number, duration: Number, timeline: Number, time: Number }}\n * Object with segment timing and duration info\n */\n\n/**\n * Returns a callback for Array.prototype.map for mapping a range of numbers to\n * information needed to build the segment list.\n *\n * @param {Object} attributes\n * Inherited MPD attributes\n * @return {toSegmentsCallback}\n * Callback map function\n */\n\nconst toSegments = attributes => number => {\n const {\n duration,\n timescale = 1,\n periodStart,\n startNumber = 1\n } = attributes;\n return {\n number: startNumber + number,\n duration: duration / timescale,\n timeline: periodStart,\n time: number * duration\n };\n};\n/**\n * Returns a list of objects containing segment timing and duration info used for\n * building the list of segments. This uses the @duration attribute specified\n * in the MPD manifest to derive the range of segments.\n *\n * @param {Object} attributes\n * Inherited MPD attributes\n * @return {{number: number, duration: number, time: number, timeline: number}[]}\n * List of Objects with segment timing and duration info\n */\n\nconst parseByDuration = attributes => {\n const {\n type,\n duration,\n timescale = 1,\n periodDuration,\n sourceDuration\n } = attributes;\n const {\n start,\n end\n } = segmentRange[type](attributes);\n const segments = range(start, end).map(toSegments(attributes));\n\n if (type === 'static') {\n const index = segments.length - 1; // section is either a period or the full source\n\n const sectionDuration = typeof periodDuration === 'number' ? periodDuration : sourceDuration; // final segment may be less than full segment duration\n\n segments[index].duration = sectionDuration - duration / timescale * index;\n }\n\n return segments;\n};\n\n/**\n * Translates SegmentBase into a set of segments.\n * (DASH SPEC Section 5.3.9.3.2) contains a set of nodes. Each\n * node should be translated into segment.\n *\n * @param {Object} attributes\n * Object containing all inherited attributes from parent elements with attribute\n * names as keys\n * @return {Object.} list of segments\n */\n\nconst segmentsFromBase = attributes => {\n const {\n baseUrl,\n initialization = {},\n sourceDuration,\n indexRange = '',\n periodStart,\n presentationTime,\n number = 0,\n duration\n } = attributes; // base url is required for SegmentBase to work, per spec (Section 5.3.9.2.1)\n\n if (!baseUrl) {\n throw new Error(errors.NO_BASE_URL);\n }\n\n const initSegment = urlTypeToSegment({\n baseUrl,\n source: initialization.sourceURL,\n range: initialization.range\n });\n const segment = urlTypeToSegment({\n baseUrl,\n source: baseUrl,\n indexRange\n });\n segment.map = initSegment; // If there is a duration, use it, otherwise use the given duration of the source\n // (since SegmentBase is only for one total segment)\n\n if (duration) {\n const segmentTimeInfo = parseByDuration(attributes);\n\n if (segmentTimeInfo.length) {\n segment.duration = segmentTimeInfo[0].duration;\n segment.timeline = segmentTimeInfo[0].timeline;\n }\n } else if (sourceDuration) {\n segment.duration = sourceDuration;\n segment.timeline = periodStart;\n } // If presentation time is provided, these segments are being generated by SIDX\n // references, and should use the time provided. For the general case of SegmentBase,\n // there should only be one segment in the period, so its presentation time is the same\n // as its period start.\n\n\n segment.presentationTime = presentationTime || periodStart;\n segment.number = number;\n return [segment];\n};\n/**\n * Given a playlist, a sidx box, and a baseUrl, update the segment list of the playlist\n * according to the sidx information given.\n *\n * playlist.sidx has metadadata about the sidx where-as the sidx param\n * is the parsed sidx box itself.\n *\n * @param {Object} playlist the playlist to update the sidx information for\n * @param {Object} sidx the parsed sidx box\n * @return {Object} the playlist object with the updated sidx information\n */\n\nconst addSidxSegmentsToPlaylist$1 = (playlist, sidx, baseUrl) => {\n // Retain init segment information\n const initSegment = playlist.sidx.map ? playlist.sidx.map : null; // Retain source duration from initial main manifest parsing\n\n const sourceDuration = playlist.sidx.duration; // Retain source timeline\n\n const timeline = playlist.timeline || 0;\n const sidxByteRange = playlist.sidx.byterange;\n const sidxEnd = sidxByteRange.offset + sidxByteRange.length; // Retain timescale of the parsed sidx\n\n const timescale = sidx.timescale; // referenceType 1 refers to other sidx boxes\n\n const mediaReferences = sidx.references.filter(r => r.referenceType !== 1);\n const segments = [];\n const type = playlist.endList ? 'static' : 'dynamic';\n const periodStart = playlist.sidx.timeline;\n let presentationTime = periodStart;\n let number = playlist.mediaSequence || 0; // firstOffset is the offset from the end of the sidx box\n\n let startIndex; // eslint-disable-next-line\n\n if (typeof sidx.firstOffset === 'bigint') {\n startIndex = window.BigInt(sidxEnd) + sidx.firstOffset;\n } else {\n startIndex = sidxEnd + sidx.firstOffset;\n }\n\n for (let i = 0; i < mediaReferences.length; i++) {\n const reference = sidx.references[i]; // size of the referenced (sub)segment\n\n const size = reference.referencedSize; // duration of the referenced (sub)segment, in the timescale\n // this will be converted to seconds when generating segments\n\n const duration = reference.subsegmentDuration; // should be an inclusive range\n\n let endIndex; // eslint-disable-next-line\n\n if (typeof startIndex === 'bigint') {\n endIndex = startIndex + window.BigInt(size) - window.BigInt(1);\n } else {\n endIndex = startIndex + size - 1;\n }\n\n const indexRange = `${startIndex}-${endIndex}`;\n const attributes = {\n baseUrl,\n timescale,\n timeline,\n periodStart,\n presentationTime,\n number,\n duration,\n sourceDuration,\n indexRange,\n type\n };\n const segment = segmentsFromBase(attributes)[0];\n\n if (initSegment) {\n segment.map = initSegment;\n }\n\n segments.push(segment);\n\n if (typeof startIndex === 'bigint') {\n startIndex += window.BigInt(size);\n } else {\n startIndex += size;\n }\n\n presentationTime += duration / timescale;\n number++;\n }\n\n playlist.segments = segments;\n return playlist;\n};\n\nconst SUPPORTED_MEDIA_TYPES = ['AUDIO', 'SUBTITLES']; // allow one 60fps frame as leniency (arbitrarily chosen)\n\nconst TIME_FUDGE = 1 / 60;\n/**\n * Given a list of timelineStarts, combines, dedupes, and sorts them.\n *\n * @param {TimelineStart[]} timelineStarts - list of timeline starts\n *\n * @return {TimelineStart[]} the combined and deduped timeline starts\n */\n\nconst getUniqueTimelineStarts = timelineStarts => {\n return union(timelineStarts, ({\n timeline\n }) => timeline).sort((a, b) => a.timeline > b.timeline ? 1 : -1);\n};\n/**\n * Finds the playlist with the matching NAME attribute.\n *\n * @param {Array} playlists - playlists to search through\n * @param {string} name - the NAME attribute to search for\n *\n * @return {Object|null} the matching playlist object, or null\n */\n\nconst findPlaylistWithName = (playlists, name) => {\n for (let i = 0; i < playlists.length; i++) {\n if (playlists[i].attributes.NAME === name) {\n return playlists[i];\n }\n }\n\n return null;\n};\n/**\n * Gets a flattened array of media group playlists.\n *\n * @param {Object} manifest - the main manifest object\n *\n * @return {Array} the media group playlists\n */\n\nconst getMediaGroupPlaylists = manifest => {\n let mediaGroupPlaylists = [];\n forEachMediaGroup(manifest, SUPPORTED_MEDIA_TYPES, (properties, type, group, label) => {\n mediaGroupPlaylists = mediaGroupPlaylists.concat(properties.playlists || []);\n });\n return mediaGroupPlaylists;\n};\n/**\n * Updates the playlist's media sequence numbers.\n *\n * @param {Object} config - options object\n * @param {Object} config.playlist - the playlist to update\n * @param {number} config.mediaSequence - the mediaSequence number to start with\n */\n\nconst updateMediaSequenceForPlaylist = ({\n playlist,\n mediaSequence\n}) => {\n playlist.mediaSequence = mediaSequence;\n playlist.segments.forEach((segment, index) => {\n segment.number = playlist.mediaSequence + index;\n });\n};\n/**\n * Updates the media and discontinuity sequence numbers of newPlaylists given oldPlaylists\n * and a complete list of timeline starts.\n *\n * If no matching playlist is found, only the discontinuity sequence number of the playlist\n * will be updated.\n *\n * Since early available timelines are not supported, at least one segment must be present.\n *\n * @param {Object} config - options object\n * @param {Object[]} oldPlaylists - the old playlists to use as a reference\n * @param {Object[]} newPlaylists - the new playlists to update\n * @param {Object} timelineStarts - all timelineStarts seen in the stream to this point\n */\n\nconst updateSequenceNumbers = ({\n oldPlaylists,\n newPlaylists,\n timelineStarts\n}) => {\n newPlaylists.forEach(playlist => {\n playlist.discontinuitySequence = timelineStarts.findIndex(function ({\n timeline\n }) {\n return timeline === playlist.timeline;\n }); // Playlists NAMEs come from DASH Representation IDs, which are mandatory\n // (see ISO_23009-1-2012 5.3.5.2).\n //\n // If the same Representation existed in a prior Period, it will retain the same NAME.\n\n const oldPlaylist = findPlaylistWithName(oldPlaylists, playlist.attributes.NAME);\n\n if (!oldPlaylist) {\n // Since this is a new playlist, the media sequence values can start from 0 without\n // consequence.\n return;\n } // TODO better support for live SIDX\n //\n // As of this writing, mpd-parser does not support multiperiod SIDX (in live or VOD).\n // This is evident by a playlist only having a single SIDX reference. In a multiperiod\n // playlist there would need to be multiple SIDX references. In addition, live SIDX is\n // not supported when the SIDX properties change on refreshes.\n //\n // In the future, if support needs to be added, the merging logic here can be called\n // after SIDX references are resolved. For now, exit early to prevent exceptions being\n // thrown due to undefined references.\n\n\n if (playlist.sidx) {\n return;\n } // Since we don't yet support early available timelines, we don't need to support\n // playlists with no segments.\n\n\n const firstNewSegment = playlist.segments[0];\n const oldMatchingSegmentIndex = oldPlaylist.segments.findIndex(function (oldSegment) {\n return Math.abs(oldSegment.presentationTime - firstNewSegment.presentationTime) < TIME_FUDGE;\n }); // No matching segment from the old playlist means the entire playlist was refreshed.\n // In this case the media sequence should account for this update, and the new segments\n // should be marked as discontinuous from the prior content, since the last prior\n // timeline was removed.\n\n if (oldMatchingSegmentIndex === -1) {\n updateMediaSequenceForPlaylist({\n playlist,\n mediaSequence: oldPlaylist.mediaSequence + oldPlaylist.segments.length\n });\n playlist.segments[0].discontinuity = true;\n playlist.discontinuityStarts.unshift(0); // No matching segment does not necessarily mean there's missing content.\n //\n // If the new playlist's timeline is the same as the last seen segment's timeline,\n // then a discontinuity can be added to identify that there's potentially missing\n // content. If there's no missing content, the discontinuity should still be rather\n // harmless. It's possible that if segment durations are accurate enough, that the\n // existence of a gap can be determined using the presentation times and durations,\n // but if the segment timing info is off, it may introduce more problems than simply\n // adding the discontinuity.\n //\n // If the new playlist's timeline is different from the last seen segment's timeline,\n // then a discontinuity can be added to identify that this is the first seen segment\n // of a new timeline. However, the logic at the start of this function that\n // determined the disconinuity sequence by timeline index is now off by one (the\n // discontinuity of the newest timeline hasn't yet fallen off the manifest...since\n // we added it), so the disconinuity sequence must be decremented.\n //\n // A period may also have a duration of zero, so the case of no segments is handled\n // here even though we don't yet support early available periods.\n\n if (!oldPlaylist.segments.length && playlist.timeline > oldPlaylist.timeline || oldPlaylist.segments.length && playlist.timeline > oldPlaylist.segments[oldPlaylist.segments.length - 1].timeline) {\n playlist.discontinuitySequence--;\n }\n\n return;\n } // If the first segment matched with a prior segment on a discontinuity (it's matching\n // on the first segment of a period), then the discontinuitySequence shouldn't be the\n // timeline's matching one, but instead should be the one prior, and the first segment\n // of the new manifest should be marked with a discontinuity.\n //\n // The reason for this special case is that discontinuity sequence shows how many\n // discontinuities have fallen off of the playlist, and discontinuities are marked on\n // the first segment of a new \"timeline.\" Because of this, while DASH will retain that\n // Period while the \"timeline\" exists, HLS keeps track of it via the discontinuity\n // sequence, and that first segment is an indicator, but can be removed before that\n // timeline is gone.\n\n\n const oldMatchingSegment = oldPlaylist.segments[oldMatchingSegmentIndex];\n\n if (oldMatchingSegment.discontinuity && !firstNewSegment.discontinuity) {\n firstNewSegment.discontinuity = true;\n playlist.discontinuityStarts.unshift(0);\n playlist.discontinuitySequence--;\n }\n\n updateMediaSequenceForPlaylist({\n playlist,\n mediaSequence: oldPlaylist.segments[oldMatchingSegmentIndex].number\n });\n });\n};\n/**\n * Given an old parsed manifest object and a new parsed manifest object, updates the\n * sequence and timing values within the new manifest to ensure that it lines up with the\n * old.\n *\n * @param {Array} oldManifest - the old main manifest object\n * @param {Array} newManifest - the new main manifest object\n *\n * @return {Object} the updated new manifest object\n */\n\nconst positionManifestOnTimeline = ({\n oldManifest,\n newManifest\n}) => {\n // Starting from v4.1.2 of the IOP, section 4.4.3.3 states:\n //\n // \"MPD@availabilityStartTime and Period@start shall not be changed over MPD updates.\"\n //\n // This was added from https://github.com/Dash-Industry-Forum/DASH-IF-IOP/issues/160\n //\n // Because of this change, and the difficulty of supporting periods with changing start\n // times, periods with changing start times are not supported. This makes the logic much\n // simpler, since periods with the same start time can be considerred the same period\n // across refreshes.\n //\n // To give an example as to the difficulty of handling periods where the start time may\n // change, if a single period manifest is refreshed with another manifest with a single\n // period, and both the start and end times are increased, then the only way to determine\n // if it's a new period or an old one that has changed is to look through the segments of\n // each playlist and determine the presentation time bounds to find a match. In addition,\n // if the period start changed to exceed the old period end, then there would be no\n // match, and it would not be possible to determine whether the refreshed period is a new\n // one or the old one.\n const oldPlaylists = oldManifest.playlists.concat(getMediaGroupPlaylists(oldManifest));\n const newPlaylists = newManifest.playlists.concat(getMediaGroupPlaylists(newManifest)); // Save all seen timelineStarts to the new manifest. Although this potentially means that\n // there's a \"memory leak\" in that it will never stop growing, in reality, only a couple\n // of properties are saved for each seen Period. Even long running live streams won't\n // generate too many Periods, unless the stream is watched for decades. In the future,\n // this can be optimized by mapping to discontinuity sequence numbers for each timeline,\n // but it may not become an issue, and the additional info can be useful for debugging.\n\n newManifest.timelineStarts = getUniqueTimelineStarts([oldManifest.timelineStarts, newManifest.timelineStarts]);\n updateSequenceNumbers({\n oldPlaylists,\n newPlaylists,\n timelineStarts: newManifest.timelineStarts\n });\n return newManifest;\n};\n\nconst generateSidxKey = sidx => sidx && sidx.uri + '-' + byteRangeToString(sidx.byterange);\n\nconst mergeDiscontiguousPlaylists = playlists => {\n // Break out playlists into groups based on their baseUrl\n const playlistsByBaseUrl = playlists.reduce(function (acc, cur) {\n if (!acc[cur.attributes.baseUrl]) {\n acc[cur.attributes.baseUrl] = [];\n }\n\n acc[cur.attributes.baseUrl].push(cur);\n return acc;\n }, {});\n let allPlaylists = [];\n Object.values(playlistsByBaseUrl).forEach(playlistGroup => {\n const mergedPlaylists = values(playlistGroup.reduce((acc, playlist) => {\n // assuming playlist IDs are the same across periods\n // TODO: handle multiperiod where representation sets are not the same\n // across periods\n const name = playlist.attributes.id + (playlist.attributes.lang || '');\n\n if (!acc[name]) {\n // First Period\n acc[name] = playlist;\n acc[name].attributes.timelineStarts = [];\n } else {\n // Subsequent Periods\n if (playlist.segments) {\n // first segment of subsequent periods signal a discontinuity\n if (playlist.segments[0]) {\n playlist.segments[0].discontinuity = true;\n }\n\n acc[name].segments.push(...playlist.segments);\n } // bubble up contentProtection, this assumes all DRM content\n // has the same contentProtection\n\n\n if (playlist.attributes.contentProtection) {\n acc[name].attributes.contentProtection = playlist.attributes.contentProtection;\n }\n }\n\n acc[name].attributes.timelineStarts.push({\n // Although they represent the same number, it's important to have both to make it\n // compatible with HLS potentially having a similar attribute.\n start: playlist.attributes.periodStart,\n timeline: playlist.attributes.periodStart\n });\n return acc;\n }, {}));\n allPlaylists = allPlaylists.concat(mergedPlaylists);\n });\n return allPlaylists.map(playlist => {\n playlist.discontinuityStarts = findIndexes(playlist.segments || [], 'discontinuity');\n return playlist;\n });\n};\n\nconst addSidxSegmentsToPlaylist = (playlist, sidxMapping) => {\n const sidxKey = generateSidxKey(playlist.sidx);\n const sidxMatch = sidxKey && sidxMapping[sidxKey] && sidxMapping[sidxKey].sidx;\n\n if (sidxMatch) {\n addSidxSegmentsToPlaylist$1(playlist, sidxMatch, playlist.sidx.resolvedUri);\n }\n\n return playlist;\n};\nconst addSidxSegmentsToPlaylists = (playlists, sidxMapping = {}) => {\n if (!Object.keys(sidxMapping).length) {\n return playlists;\n }\n\n for (const i in playlists) {\n playlists[i] = addSidxSegmentsToPlaylist(playlists[i], sidxMapping);\n }\n\n return playlists;\n};\nconst formatAudioPlaylist = ({\n attributes,\n segments,\n sidx,\n mediaSequence,\n discontinuitySequence,\n discontinuityStarts\n}, isAudioOnly) => {\n const playlist = {\n attributes: {\n NAME: attributes.id,\n BANDWIDTH: attributes.bandwidth,\n CODECS: attributes.codecs,\n ['PROGRAM-ID']: 1\n },\n uri: '',\n endList: attributes.type === 'static',\n timeline: attributes.periodStart,\n resolvedUri: attributes.baseUrl || '',\n targetDuration: attributes.duration,\n discontinuitySequence,\n discontinuityStarts,\n timelineStarts: attributes.timelineStarts,\n mediaSequence,\n segments\n };\n\n if (attributes.contentProtection) {\n playlist.contentProtection = attributes.contentProtection;\n }\n\n if (attributes.serviceLocation) {\n playlist.attributes.serviceLocation = attributes.serviceLocation;\n }\n\n if (sidx) {\n playlist.sidx = sidx;\n }\n\n if (isAudioOnly) {\n playlist.attributes.AUDIO = 'audio';\n playlist.attributes.SUBTITLES = 'subs';\n }\n\n return playlist;\n};\nconst formatVttPlaylist = ({\n attributes,\n segments,\n mediaSequence,\n discontinuityStarts,\n discontinuitySequence\n}) => {\n if (typeof segments === 'undefined') {\n // vtt tracks may use single file in BaseURL\n segments = [{\n uri: attributes.baseUrl,\n timeline: attributes.periodStart,\n resolvedUri: attributes.baseUrl || '',\n duration: attributes.sourceDuration,\n number: 0\n }]; // targetDuration should be the same duration as the only segment\n\n attributes.duration = attributes.sourceDuration;\n }\n\n const m3u8Attributes = {\n NAME: attributes.id,\n BANDWIDTH: attributes.bandwidth,\n ['PROGRAM-ID']: 1\n };\n\n if (attributes.codecs) {\n m3u8Attributes.CODECS = attributes.codecs;\n }\n\n const vttPlaylist = {\n attributes: m3u8Attributes,\n uri: '',\n endList: attributes.type === 'static',\n timeline: attributes.periodStart,\n resolvedUri: attributes.baseUrl || '',\n targetDuration: attributes.duration,\n timelineStarts: attributes.timelineStarts,\n discontinuityStarts,\n discontinuitySequence,\n mediaSequence,\n segments\n };\n\n if (attributes.serviceLocation) {\n vttPlaylist.attributes.serviceLocation = attributes.serviceLocation;\n }\n\n return vttPlaylist;\n};\nconst organizeAudioPlaylists = (playlists, sidxMapping = {}, isAudioOnly = false) => {\n let mainPlaylist;\n const formattedPlaylists = playlists.reduce((a, playlist) => {\n const role = playlist.attributes.role && playlist.attributes.role.value || '';\n const language = playlist.attributes.lang || '';\n let label = playlist.attributes.label || 'main';\n\n if (language && !playlist.attributes.label) {\n const roleLabel = role ? ` (${role})` : '';\n label = `${playlist.attributes.lang}${roleLabel}`;\n }\n\n if (!a[label]) {\n a[label] = {\n language,\n autoselect: true,\n default: role === 'main',\n playlists: [],\n uri: ''\n };\n }\n\n const formatted = addSidxSegmentsToPlaylist(formatAudioPlaylist(playlist, isAudioOnly), sidxMapping);\n a[label].playlists.push(formatted);\n\n if (typeof mainPlaylist === 'undefined' && role === 'main') {\n mainPlaylist = playlist;\n mainPlaylist.default = true;\n }\n\n return a;\n }, {}); // if no playlists have role \"main\", mark the first as main\n\n if (!mainPlaylist) {\n const firstLabel = Object.keys(formattedPlaylists)[0];\n formattedPlaylists[firstLabel].default = true;\n }\n\n return formattedPlaylists;\n};\nconst organizeVttPlaylists = (playlists, sidxMapping = {}) => {\n return playlists.reduce((a, playlist) => {\n const label = playlist.attributes.label || playlist.attributes.lang || 'text';\n\n if (!a[label]) {\n a[label] = {\n language: label,\n default: false,\n autoselect: false,\n playlists: [],\n uri: ''\n };\n }\n\n a[label].playlists.push(addSidxSegmentsToPlaylist(formatVttPlaylist(playlist), sidxMapping));\n return a;\n }, {});\n};\n\nconst organizeCaptionServices = captionServices => captionServices.reduce((svcObj, svc) => {\n if (!svc) {\n return svcObj;\n }\n\n svc.forEach(service => {\n const {\n channel,\n language\n } = service;\n svcObj[language] = {\n autoselect: false,\n default: false,\n instreamId: channel,\n language\n };\n\n if (service.hasOwnProperty('aspectRatio')) {\n svcObj[language].aspectRatio = service.aspectRatio;\n }\n\n if (service.hasOwnProperty('easyReader')) {\n svcObj[language].easyReader = service.easyReader;\n }\n\n if (service.hasOwnProperty('3D')) {\n svcObj[language]['3D'] = service['3D'];\n }\n });\n return svcObj;\n}, {});\n\nconst formatVideoPlaylist = ({\n attributes,\n segments,\n sidx,\n discontinuityStarts\n}) => {\n const playlist = {\n attributes: {\n NAME: attributes.id,\n AUDIO: 'audio',\n SUBTITLES: 'subs',\n RESOLUTION: {\n width: attributes.width,\n height: attributes.height\n },\n CODECS: attributes.codecs,\n BANDWIDTH: attributes.bandwidth,\n ['PROGRAM-ID']: 1\n },\n uri: '',\n endList: attributes.type === 'static',\n timeline: attributes.periodStart,\n resolvedUri: attributes.baseUrl || '',\n targetDuration: attributes.duration,\n discontinuityStarts,\n timelineStarts: attributes.timelineStarts,\n segments\n };\n\n if (attributes.frameRate) {\n playlist.attributes['FRAME-RATE'] = attributes.frameRate;\n }\n\n if (attributes.contentProtection) {\n playlist.contentProtection = attributes.contentProtection;\n }\n\n if (attributes.serviceLocation) {\n playlist.attributes.serviceLocation = attributes.serviceLocation;\n }\n\n if (sidx) {\n playlist.sidx = sidx;\n }\n\n return playlist;\n};\n\nconst videoOnly = ({\n attributes\n}) => attributes.mimeType === 'video/mp4' || attributes.mimeType === 'video/webm' || attributes.contentType === 'video';\n\nconst audioOnly = ({\n attributes\n}) => attributes.mimeType === 'audio/mp4' || attributes.mimeType === 'audio/webm' || attributes.contentType === 'audio';\n\nconst vttOnly = ({\n attributes\n}) => attributes.mimeType === 'text/vtt' || attributes.contentType === 'text';\n/**\n * Contains start and timeline properties denoting a timeline start. For DASH, these will\n * be the same number.\n *\n * @typedef {Object} TimelineStart\n * @property {number} start - the start time of the timeline\n * @property {number} timeline - the timeline number\n */\n\n/**\n * Adds appropriate media and discontinuity sequence values to the segments and playlists.\n *\n * Throughout mpd-parser, the `number` attribute is used in relation to `startNumber`, a\n * DASH specific attribute used in constructing segment URI's from templates. However, from\n * an HLS perspective, the `number` attribute on a segment would be its `mediaSequence`\n * value, which should start at the original media sequence value (or 0) and increment by 1\n * for each segment thereafter. Since DASH's `startNumber` values are independent per\n * period, it doesn't make sense to use it for `number`. Instead, assume everything starts\n * from a 0 mediaSequence value and increment from there.\n *\n * Note that VHS currently doesn't use the `number` property, but it can be helpful for\n * debugging and making sense of the manifest.\n *\n * For live playlists, to account for values increasing in manifests when periods are\n * removed on refreshes, merging logic should be used to update the numbers to their\n * appropriate values (to ensure they're sequential and increasing).\n *\n * @param {Object[]} playlists - the playlists to update\n * @param {TimelineStart[]} timelineStarts - the timeline starts for the manifest\n */\n\n\nconst addMediaSequenceValues = (playlists, timelineStarts) => {\n // increment all segments sequentially\n playlists.forEach(playlist => {\n playlist.mediaSequence = 0;\n playlist.discontinuitySequence = timelineStarts.findIndex(function ({\n timeline\n }) {\n return timeline === playlist.timeline;\n });\n\n if (!playlist.segments) {\n return;\n }\n\n playlist.segments.forEach((segment, index) => {\n segment.number = index;\n });\n });\n};\n/**\n * Given a media group object, flattens all playlists within the media group into a single\n * array.\n *\n * @param {Object} mediaGroupObject - the media group object\n *\n * @return {Object[]}\n * The media group playlists\n */\n\nconst flattenMediaGroupPlaylists = mediaGroupObject => {\n if (!mediaGroupObject) {\n return [];\n }\n\n return Object.keys(mediaGroupObject).reduce((acc, label) => {\n const labelContents = mediaGroupObject[label];\n return acc.concat(labelContents.playlists);\n }, []);\n};\nconst toM3u8 = ({\n dashPlaylists,\n locations,\n contentSteering,\n sidxMapping = {},\n previousManifest,\n eventStream\n}) => {\n if (!dashPlaylists.length) {\n return {};\n } // grab all main manifest attributes\n\n\n const {\n sourceDuration: duration,\n type,\n suggestedPresentationDelay,\n minimumUpdatePeriod\n } = dashPlaylists[0].attributes;\n const videoPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(videoOnly)).map(formatVideoPlaylist);\n const audioPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(audioOnly));\n const vttPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(vttOnly));\n const captions = dashPlaylists.map(playlist => playlist.attributes.captionServices).filter(Boolean);\n const manifest = {\n allowCache: true,\n discontinuityStarts: [],\n segments: [],\n endList: true,\n mediaGroups: {\n AUDIO: {},\n VIDEO: {},\n ['CLOSED-CAPTIONS']: {},\n SUBTITLES: {}\n },\n uri: '',\n duration,\n playlists: addSidxSegmentsToPlaylists(videoPlaylists, sidxMapping)\n };\n\n if (minimumUpdatePeriod >= 0) {\n manifest.minimumUpdatePeriod = minimumUpdatePeriod * 1000;\n }\n\n if (locations) {\n manifest.locations = locations;\n }\n\n if (contentSteering) {\n manifest.contentSteering = contentSteering;\n }\n\n if (type === 'dynamic') {\n manifest.suggestedPresentationDelay = suggestedPresentationDelay;\n }\n\n if (eventStream && eventStream.length > 0) {\n manifest.eventStream = eventStream;\n }\n\n const isAudioOnly = manifest.playlists.length === 0;\n const organizedAudioGroup = audioPlaylists.length ? organizeAudioPlaylists(audioPlaylists, sidxMapping, isAudioOnly) : null;\n const organizedVttGroup = vttPlaylists.length ? organizeVttPlaylists(vttPlaylists, sidxMapping) : null;\n const formattedPlaylists = videoPlaylists.concat(flattenMediaGroupPlaylists(organizedAudioGroup), flattenMediaGroupPlaylists(organizedVttGroup));\n const playlistTimelineStarts = formattedPlaylists.map(({\n timelineStarts\n }) => timelineStarts);\n manifest.timelineStarts = getUniqueTimelineStarts(playlistTimelineStarts);\n addMediaSequenceValues(formattedPlaylists, manifest.timelineStarts);\n\n if (organizedAudioGroup) {\n manifest.mediaGroups.AUDIO.audio = organizedAudioGroup;\n }\n\n if (organizedVttGroup) {\n manifest.mediaGroups.SUBTITLES.subs = organizedVttGroup;\n }\n\n if (captions.length) {\n manifest.mediaGroups['CLOSED-CAPTIONS'].cc = organizeCaptionServices(captions);\n }\n\n if (previousManifest) {\n return positionManifestOnTimeline({\n oldManifest: previousManifest,\n newManifest: manifest\n });\n }\n\n return manifest;\n};\n\n/**\n * Calculates the R (repetition) value for a live stream (for the final segment\n * in a manifest where the r value is negative 1)\n *\n * @param {Object} attributes\n * Object containing all inherited attributes from parent elements with attribute\n * names as keys\n * @param {number} time\n * current time (typically the total time up until the final segment)\n * @param {number} duration\n * duration property for the given \n *\n * @return {number}\n * R value to reach the end of the given period\n */\nconst getLiveRValue = (attributes, time, duration) => {\n const {\n NOW,\n clientOffset,\n availabilityStartTime,\n timescale = 1,\n periodStart = 0,\n minimumUpdatePeriod = 0\n } = attributes;\n const now = (NOW + clientOffset) / 1000;\n const periodStartWC = availabilityStartTime + periodStart;\n const periodEndWC = now + minimumUpdatePeriod;\n const periodDuration = periodEndWC - periodStartWC;\n return Math.ceil((periodDuration * timescale - time) / duration);\n};\n/**\n * Uses information provided by SegmentTemplate.SegmentTimeline to determine segment\n * timing and duration\n *\n * @param {Object} attributes\n * Object containing all inherited attributes from parent elements with attribute\n * names as keys\n * @param {Object[]} segmentTimeline\n * List of objects representing the attributes of each S element contained within\n *\n * @return {{number: number, duration: number, time: number, timeline: number}[]}\n * List of Objects with segment timing and duration info\n */\n\n\nconst parseByTimeline = (attributes, segmentTimeline) => {\n const {\n type,\n minimumUpdatePeriod = 0,\n media = '',\n sourceDuration,\n timescale = 1,\n startNumber = 1,\n periodStart: timeline\n } = attributes;\n const segments = [];\n let time = -1;\n\n for (let sIndex = 0; sIndex < segmentTimeline.length; sIndex++) {\n const S = segmentTimeline[sIndex];\n const duration = S.d;\n const repeat = S.r || 0;\n const segmentTime = S.t || 0;\n\n if (time < 0) {\n // first segment\n time = segmentTime;\n }\n\n if (segmentTime && segmentTime > time) {\n // discontinuity\n // TODO: How to handle this type of discontinuity\n // timeline++ here would treat it like HLS discontuity and content would\n // get appended without gap\n // E.G.\n // \n // \n // \n // \n // would have $Time$ values of [0, 1, 2, 5]\n // should this be appened at time positions [0, 1, 2, 3],(#EXT-X-DISCONTINUITY)\n // or [0, 1, 2, gap, gap, 5]? (#EXT-X-GAP)\n // does the value of sourceDuration consider this when calculating arbitrary\n // negative @r repeat value?\n // E.G. Same elements as above with this added at the end\n // \n // with a sourceDuration of 10\n // Would the 2 gaps be included in the time duration calculations resulting in\n // 8 segments with $Time$ values of [0, 1, 2, 5, 6, 7, 8, 9] or 10 segments\n // with $Time$ values of [0, 1, 2, 5, 6, 7, 8, 9, 10, 11] ?\n time = segmentTime;\n }\n\n let count;\n\n if (repeat < 0) {\n const nextS = sIndex + 1;\n\n if (nextS === segmentTimeline.length) {\n // last segment\n if (type === 'dynamic' && minimumUpdatePeriod > 0 && media.indexOf('$Number$') > 0) {\n count = getLiveRValue(attributes, time, duration);\n } else {\n // TODO: This may be incorrect depending on conclusion of TODO above\n count = (sourceDuration * timescale - time) / duration;\n }\n } else {\n count = (segmentTimeline[nextS].t - time) / duration;\n }\n } else {\n count = repeat + 1;\n }\n\n const end = startNumber + segments.length + count;\n let number = startNumber + segments.length;\n\n while (number < end) {\n segments.push({\n number,\n duration: duration / timescale,\n time,\n timeline\n });\n time += duration;\n number++;\n }\n }\n\n return segments;\n};\n\nconst identifierPattern = /\\$([A-z]*)(?:(%0)([0-9]+)d)?\\$/g;\n/**\n * Replaces template identifiers with corresponding values. To be used as the callback\n * for String.prototype.replace\n *\n * @name replaceCallback\n * @function\n * @param {string} match\n * Entire match of identifier\n * @param {string} identifier\n * Name of matched identifier\n * @param {string} format\n * Format tag string. Its presence indicates that padding is expected\n * @param {string} width\n * Desired length of the replaced value. Values less than this width shall be left\n * zero padded\n * @return {string}\n * Replacement for the matched identifier\n */\n\n/**\n * Returns a function to be used as a callback for String.prototype.replace to replace\n * template identifiers\n *\n * @param {Obect} values\n * Object containing values that shall be used to replace known identifiers\n * @param {number} values.RepresentationID\n * Value of the Representation@id attribute\n * @param {number} values.Number\n * Number of the corresponding segment\n * @param {number} values.Bandwidth\n * Value of the Representation@bandwidth attribute.\n * @param {number} values.Time\n * Timestamp value of the corresponding segment\n * @return {replaceCallback}\n * Callback to be used with String.prototype.replace to replace identifiers\n */\n\nconst identifierReplacement = values => (match, identifier, format, width) => {\n if (match === '$$') {\n // escape sequence\n return '$';\n }\n\n if (typeof values[identifier] === 'undefined') {\n return match;\n }\n\n const value = '' + values[identifier];\n\n if (identifier === 'RepresentationID') {\n // Format tag shall not be present with RepresentationID\n return value;\n }\n\n if (!format) {\n width = 1;\n } else {\n width = parseInt(width, 10);\n }\n\n if (value.length >= width) {\n return value;\n }\n\n return `${new Array(width - value.length + 1).join('0')}${value}`;\n};\n/**\n * Constructs a segment url from a template string\n *\n * @param {string} url\n * Template string to construct url from\n * @param {Obect} values\n * Object containing values that shall be used to replace known identifiers\n * @param {number} values.RepresentationID\n * Value of the Representation@id attribute\n * @param {number} values.Number\n * Number of the corresponding segment\n * @param {number} values.Bandwidth\n * Value of the Representation@bandwidth attribute.\n * @param {number} values.Time\n * Timestamp value of the corresponding segment\n * @return {string}\n * Segment url with identifiers replaced\n */\n\nconst constructTemplateUrl = (url, values) => url.replace(identifierPattern, identifierReplacement(values));\n/**\n * Generates a list of objects containing timing and duration information about each\n * segment needed to generate segment uris and the complete segment object\n *\n * @param {Object} attributes\n * Object containing all inherited attributes from parent elements with attribute\n * names as keys\n * @param {Object[]|undefined} segmentTimeline\n * List of objects representing the attributes of each S element contained within\n * the SegmentTimeline element\n * @return {{number: number, duration: number, time: number, timeline: number}[]}\n * List of Objects with segment timing and duration info\n */\n\nconst parseTemplateInfo = (attributes, segmentTimeline) => {\n if (!attributes.duration && !segmentTimeline) {\n // if neither @duration or SegmentTimeline are present, then there shall be exactly\n // one media segment\n return [{\n number: attributes.startNumber || 1,\n duration: attributes.sourceDuration,\n time: 0,\n timeline: attributes.periodStart\n }];\n }\n\n if (attributes.duration) {\n return parseByDuration(attributes);\n }\n\n return parseByTimeline(attributes, segmentTimeline);\n};\n/**\n * Generates a list of segments using information provided by the SegmentTemplate element\n *\n * @param {Object} attributes\n * Object containing all inherited attributes from parent elements with attribute\n * names as keys\n * @param {Object[]|undefined} segmentTimeline\n * List of objects representing the attributes of each S element contained within\n * the SegmentTimeline element\n * @return {Object[]}\n * List of segment objects\n */\n\nconst segmentsFromTemplate = (attributes, segmentTimeline) => {\n const templateValues = {\n RepresentationID: attributes.id,\n Bandwidth: attributes.bandwidth || 0\n };\n const {\n initialization = {\n sourceURL: '',\n range: ''\n }\n } = attributes;\n const mapSegment = urlTypeToSegment({\n baseUrl: attributes.baseUrl,\n source: constructTemplateUrl(initialization.sourceURL, templateValues),\n range: initialization.range\n });\n const segments = parseTemplateInfo(attributes, segmentTimeline);\n return segments.map(segment => {\n templateValues.Number = segment.number;\n templateValues.Time = segment.time;\n const uri = constructTemplateUrl(attributes.media || '', templateValues); // See DASH spec section 5.3.9.2.2\n // - if timescale isn't present on any level, default to 1.\n\n const timescale = attributes.timescale || 1; // - if presentationTimeOffset isn't present on any level, default to 0\n\n const presentationTimeOffset = attributes.presentationTimeOffset || 0;\n const presentationTime = // Even if the @t attribute is not specified for the segment, segment.time is\n // calculated in mpd-parser prior to this, so it's assumed to be available.\n attributes.periodStart + (segment.time - presentationTimeOffset) / timescale;\n const map = {\n uri,\n timeline: segment.timeline,\n duration: segment.duration,\n resolvedUri: resolveUrl(attributes.baseUrl || '', uri),\n map: mapSegment,\n number: segment.number,\n presentationTime\n };\n return map;\n });\n};\n\n/**\n * Converts a (of type URLType from the DASH spec 5.3.9.2 Table 14)\n * to an object that matches the output of a segment in videojs/mpd-parser\n *\n * @param {Object} attributes\n * Object containing all inherited attributes from parent elements with attribute\n * names as keys\n * @param {Object} segmentUrl\n * node to translate into a segment object\n * @return {Object} translated segment object\n */\n\nconst SegmentURLToSegmentObject = (attributes, segmentUrl) => {\n const {\n baseUrl,\n initialization = {}\n } = attributes;\n const initSegment = urlTypeToSegment({\n baseUrl,\n source: initialization.sourceURL,\n range: initialization.range\n });\n const segment = urlTypeToSegment({\n baseUrl,\n source: segmentUrl.media,\n range: segmentUrl.mediaRange\n });\n segment.map = initSegment;\n return segment;\n};\n/**\n * Generates a list of segments using information provided by the SegmentList element\n * SegmentList (DASH SPEC Section 5.3.9.3.2) contains a set of nodes. Each\n * node should be translated into segment.\n *\n * @param {Object} attributes\n * Object containing all inherited attributes from parent elements with attribute\n * names as keys\n * @param {Object[]|undefined} segmentTimeline\n * List of objects representing the attributes of each S element contained within\n * the SegmentTimeline element\n * @return {Object.} list of segments\n */\n\n\nconst segmentsFromList = (attributes, segmentTimeline) => {\n const {\n duration,\n segmentUrls = [],\n periodStart\n } = attributes; // Per spec (5.3.9.2.1) no way to determine segment duration OR\n // if both SegmentTimeline and @duration are defined, it is outside of spec.\n\n if (!duration && !segmentTimeline || duration && segmentTimeline) {\n throw new Error(errors.SEGMENT_TIME_UNSPECIFIED);\n }\n\n const segmentUrlMap = segmentUrls.map(segmentUrlObject => SegmentURLToSegmentObject(attributes, segmentUrlObject));\n let segmentTimeInfo;\n\n if (duration) {\n segmentTimeInfo = parseByDuration(attributes);\n }\n\n if (segmentTimeline) {\n segmentTimeInfo = parseByTimeline(attributes, segmentTimeline);\n }\n\n const segments = segmentTimeInfo.map((segmentTime, index) => {\n if (segmentUrlMap[index]) {\n const segment = segmentUrlMap[index]; // See DASH spec section 5.3.9.2.2\n // - if timescale isn't present on any level, default to 1.\n\n const timescale = attributes.timescale || 1; // - if presentationTimeOffset isn't present on any level, default to 0\n\n const presentationTimeOffset = attributes.presentationTimeOffset || 0;\n segment.timeline = segmentTime.timeline;\n segment.duration = segmentTime.duration;\n segment.number = segmentTime.number;\n segment.presentationTime = periodStart + (segmentTime.time - presentationTimeOffset) / timescale;\n return segment;\n } // Since we're mapping we should get rid of any blank segments (in case\n // the given SegmentTimeline is handling for more elements than we have\n // SegmentURLs for).\n\n }).filter(segment => segment);\n return segments;\n};\n\nconst generateSegments = ({\n attributes,\n segmentInfo\n}) => {\n let segmentAttributes;\n let segmentsFn;\n\n if (segmentInfo.template) {\n segmentsFn = segmentsFromTemplate;\n segmentAttributes = merge(attributes, segmentInfo.template);\n } else if (segmentInfo.base) {\n segmentsFn = segmentsFromBase;\n segmentAttributes = merge(attributes, segmentInfo.base);\n } else if (segmentInfo.list) {\n segmentsFn = segmentsFromList;\n segmentAttributes = merge(attributes, segmentInfo.list);\n }\n\n const segmentsInfo = {\n attributes\n };\n\n if (!segmentsFn) {\n return segmentsInfo;\n }\n\n const segments = segmentsFn(segmentAttributes, segmentInfo.segmentTimeline); // The @duration attribute will be used to determin the playlist's targetDuration which\n // must be in seconds. Since we've generated the segment list, we no longer need\n // @duration to be in @timescale units, so we can convert it here.\n\n if (segmentAttributes.duration) {\n const {\n duration,\n timescale = 1\n } = segmentAttributes;\n segmentAttributes.duration = duration / timescale;\n } else if (segments.length) {\n // if there is no @duration attribute, use the largest segment duration as\n // as target duration\n segmentAttributes.duration = segments.reduce((max, segment) => {\n return Math.max(max, Math.ceil(segment.duration));\n }, 0);\n } else {\n segmentAttributes.duration = 0;\n }\n\n segmentsInfo.attributes = segmentAttributes;\n segmentsInfo.segments = segments; // This is a sidx box without actual segment information\n\n if (segmentInfo.base && segmentAttributes.indexRange) {\n segmentsInfo.sidx = segments[0];\n segmentsInfo.segments = [];\n }\n\n return segmentsInfo;\n};\nconst toPlaylists = representations => representations.map(generateSegments);\n\nconst findChildren = (element, name) => from(element.childNodes).filter(({\n tagName\n}) => tagName === name);\nconst getContent = element => element.textContent.trim();\n\n/**\n * Converts the provided string that may contain a division operation to a number.\n *\n * @param {string} value - the provided string value\n *\n * @return {number} the parsed string value\n */\nconst parseDivisionValue = value => {\n return parseFloat(value.split('/').reduce((prev, current) => prev / current));\n};\n\nconst parseDuration = str => {\n const SECONDS_IN_YEAR = 365 * 24 * 60 * 60;\n const SECONDS_IN_MONTH = 30 * 24 * 60 * 60;\n const SECONDS_IN_DAY = 24 * 60 * 60;\n const SECONDS_IN_HOUR = 60 * 60;\n const SECONDS_IN_MIN = 60; // P10Y10M10DT10H10M10.1S\n\n const durationRegex = /P(?:(\\d*)Y)?(?:(\\d*)M)?(?:(\\d*)D)?(?:T(?:(\\d*)H)?(?:(\\d*)M)?(?:([\\d.]*)S)?)?/;\n const match = durationRegex.exec(str);\n\n if (!match) {\n return 0;\n }\n\n const [year, month, day, hour, minute, second] = match.slice(1);\n return parseFloat(year || 0) * SECONDS_IN_YEAR + parseFloat(month || 0) * SECONDS_IN_MONTH + parseFloat(day || 0) * SECONDS_IN_DAY + parseFloat(hour || 0) * SECONDS_IN_HOUR + parseFloat(minute || 0) * SECONDS_IN_MIN + parseFloat(second || 0);\n};\nconst parseDate = str => {\n // Date format without timezone according to ISO 8601\n // YYY-MM-DDThh:mm:ss.ssssss\n const dateRegex = /^\\d+-\\d+-\\d+T\\d+:\\d+:\\d+(\\.\\d+)?$/; // If the date string does not specifiy a timezone, we must specifiy UTC. This is\n // expressed by ending with 'Z'\n\n if (dateRegex.test(str)) {\n str += 'Z';\n }\n\n return Date.parse(str);\n};\n\nconst parsers = {\n /**\n * Specifies the duration of the entire Media Presentation. Format is a duration string\n * as specified in ISO 8601\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The duration in seconds\n */\n mediaPresentationDuration(value) {\n return parseDuration(value);\n },\n\n /**\n * Specifies the Segment availability start time for all Segments referred to in this\n * MPD. For a dynamic manifest, it specifies the anchor for the earliest availability\n * time. Format is a date string as specified in ISO 8601\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The date as seconds from unix epoch\n */\n availabilityStartTime(value) {\n return parseDate(value) / 1000;\n },\n\n /**\n * Specifies the smallest period between potential changes to the MPD. Format is a\n * duration string as specified in ISO 8601\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The duration in seconds\n */\n minimumUpdatePeriod(value) {\n return parseDuration(value);\n },\n\n /**\n * Specifies the suggested presentation delay. Format is a\n * duration string as specified in ISO 8601\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The duration in seconds\n */\n suggestedPresentationDelay(value) {\n return parseDuration(value);\n },\n\n /**\n * specifices the type of mpd. Can be either \"static\" or \"dynamic\"\n *\n * @param {string} value\n * value of attribute as a string\n *\n * @return {string}\n * The type as a string\n */\n type(value) {\n return value;\n },\n\n /**\n * Specifies the duration of the smallest time shifting buffer for any Representation\n * in the MPD. Format is a duration string as specified in ISO 8601\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The duration in seconds\n */\n timeShiftBufferDepth(value) {\n return parseDuration(value);\n },\n\n /**\n * Specifies the PeriodStart time of the Period relative to the availabilityStarttime.\n * Format is a duration string as specified in ISO 8601\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The duration in seconds\n */\n start(value) {\n return parseDuration(value);\n },\n\n /**\n * Specifies the width of the visual presentation\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed width\n */\n width(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the height of the visual presentation\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed height\n */\n height(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the bitrate of the representation\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed bandwidth\n */\n bandwidth(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the frame rate of the representation\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed frame rate\n */\n frameRate(value) {\n return parseDivisionValue(value);\n },\n\n /**\n * Specifies the number of the first Media Segment in this Representation in the Period\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed number\n */\n startNumber(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the timescale in units per seconds\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed timescale\n */\n timescale(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the presentationTimeOffset.\n *\n * @param {string} value\n * value of the attribute as a string\n *\n * @return {number}\n * The parsed presentationTimeOffset\n */\n presentationTimeOffset(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the constant approximate Segment duration\n * NOTE: The element also contains an @duration attribute. This duration\n * specifies the duration of the Period. This attribute is currently not\n * supported by the rest of the parser, however we still check for it to prevent\n * errors.\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed duration\n */\n duration(value) {\n const parsedValue = parseInt(value, 10);\n\n if (isNaN(parsedValue)) {\n return parseDuration(value);\n }\n\n return parsedValue;\n },\n\n /**\n * Specifies the Segment duration, in units of the value of the @timescale.\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed duration\n */\n d(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the MPD start time, in @timescale units, the first Segment in the series\n * starts relative to the beginning of the Period\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed time\n */\n t(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the repeat count of the number of following contiguous Segments with the\n * same duration expressed by the value of @d\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed number\n */\n r(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the presentationTime.\n *\n * @param {string} value\n * value of the attribute as a string\n *\n * @return {number}\n * The parsed presentationTime\n */\n presentationTime(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Default parser for all other attributes. Acts as a no-op and just returns the value\n * as a string\n *\n * @param {string} value\n * value of attribute as a string\n * @return {string}\n * Unparsed value\n */\n DEFAULT(value) {\n return value;\n }\n\n};\n/**\n * Gets all the attributes and values of the provided node, parses attributes with known\n * types, and returns an object with attribute names mapped to values.\n *\n * @param {Node} el\n * The node to parse attributes from\n * @return {Object}\n * Object with all attributes of el parsed\n */\n\nconst parseAttributes = el => {\n if (!(el && el.attributes)) {\n return {};\n }\n\n return from(el.attributes).reduce((a, e) => {\n const parseFn = parsers[e.name] || parsers.DEFAULT;\n a[e.name] = parseFn(e.value);\n return a;\n }, {});\n};\n\nconst keySystemsMap = {\n 'urn:uuid:1077efec-c0b2-4d02-ace3-3c1e52e2fb4b': 'org.w3.clearkey',\n 'urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed': 'com.widevine.alpha',\n 'urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95': 'com.microsoft.playready',\n 'urn:uuid:f239e769-efa3-4850-9c16-a903c6932efb': 'com.adobe.primetime'\n};\n/**\n * Builds a list of urls that is the product of the reference urls and BaseURL values\n *\n * @param {Object[]} references\n * List of objects containing the reference URL as well as its attributes\n * @param {Node[]} baseUrlElements\n * List of BaseURL nodes from the mpd\n * @return {Object[]}\n * List of objects with resolved urls and attributes\n */\n\nconst buildBaseUrls = (references, baseUrlElements) => {\n if (!baseUrlElements.length) {\n return references;\n }\n\n return flatten(references.map(function (reference) {\n return baseUrlElements.map(function (baseUrlElement) {\n const initialBaseUrl = getContent(baseUrlElement);\n const resolvedBaseUrl = resolveUrl(reference.baseUrl, initialBaseUrl);\n const finalBaseUrl = merge(parseAttributes(baseUrlElement), {\n baseUrl: resolvedBaseUrl\n }); // If the URL is resolved, we want to get the serviceLocation from the reference\n // assuming there is no serviceLocation on the initialBaseUrl\n\n if (resolvedBaseUrl !== initialBaseUrl && !finalBaseUrl.serviceLocation && reference.serviceLocation) {\n finalBaseUrl.serviceLocation = reference.serviceLocation;\n }\n\n return finalBaseUrl;\n });\n }));\n};\n/**\n * Contains all Segment information for its containing AdaptationSet\n *\n * @typedef {Object} SegmentInformation\n * @property {Object|undefined} template\n * Contains the attributes for the SegmentTemplate node\n * @property {Object[]|undefined} segmentTimeline\n * Contains a list of atrributes for each S node within the SegmentTimeline node\n * @property {Object|undefined} list\n * Contains the attributes for the SegmentList node\n * @property {Object|undefined} base\n * Contains the attributes for the SegmentBase node\n */\n\n/**\n * Returns all available Segment information contained within the AdaptationSet node\n *\n * @param {Node} adaptationSet\n * The AdaptationSet node to get Segment information from\n * @return {SegmentInformation}\n * The Segment information contained within the provided AdaptationSet\n */\n\nconst getSegmentInformation = adaptationSet => {\n const segmentTemplate = findChildren(adaptationSet, 'SegmentTemplate')[0];\n const segmentList = findChildren(adaptationSet, 'SegmentList')[0];\n const segmentUrls = segmentList && findChildren(segmentList, 'SegmentURL').map(s => merge({\n tag: 'SegmentURL'\n }, parseAttributes(s)));\n const segmentBase = findChildren(adaptationSet, 'SegmentBase')[0];\n const segmentTimelineParentNode = segmentList || segmentTemplate;\n const segmentTimeline = segmentTimelineParentNode && findChildren(segmentTimelineParentNode, 'SegmentTimeline')[0];\n const segmentInitializationParentNode = segmentList || segmentBase || segmentTemplate;\n const segmentInitialization = segmentInitializationParentNode && findChildren(segmentInitializationParentNode, 'Initialization')[0]; // SegmentTemplate is handled slightly differently, since it can have both\n // @initialization and an node. @initialization can be templated,\n // while the node can have a url and range specified. If the has\n // both @initialization and an subelement we opt to override with\n // the node, as this interaction is not defined in the spec.\n\n const template = segmentTemplate && parseAttributes(segmentTemplate);\n\n if (template && segmentInitialization) {\n template.initialization = segmentInitialization && parseAttributes(segmentInitialization);\n } else if (template && template.initialization) {\n // If it is @initialization we convert it to an object since this is the format that\n // later functions will rely on for the initialization segment. This is only valid\n // for \n template.initialization = {\n sourceURL: template.initialization\n };\n }\n\n const segmentInfo = {\n template,\n segmentTimeline: segmentTimeline && findChildren(segmentTimeline, 'S').map(s => parseAttributes(s)),\n list: segmentList && merge(parseAttributes(segmentList), {\n segmentUrls,\n initialization: parseAttributes(segmentInitialization)\n }),\n base: segmentBase && merge(parseAttributes(segmentBase), {\n initialization: parseAttributes(segmentInitialization)\n })\n };\n Object.keys(segmentInfo).forEach(key => {\n if (!segmentInfo[key]) {\n delete segmentInfo[key];\n }\n });\n return segmentInfo;\n};\n/**\n * Contains Segment information and attributes needed to construct a Playlist object\n * from a Representation\n *\n * @typedef {Object} RepresentationInformation\n * @property {SegmentInformation} segmentInfo\n * Segment information for this Representation\n * @property {Object} attributes\n * Inherited attributes for this Representation\n */\n\n/**\n * Maps a Representation node to an object containing Segment information and attributes\n *\n * @name inheritBaseUrlsCallback\n * @function\n * @param {Node} representation\n * Representation node from the mpd\n * @return {RepresentationInformation}\n * Representation information needed to construct a Playlist object\n */\n\n/**\n * Returns a callback for Array.prototype.map for mapping Representation nodes to\n * Segment information and attributes using inherited BaseURL nodes.\n *\n * @param {Object} adaptationSetAttributes\n * Contains attributes inherited by the AdaptationSet\n * @param {Object[]} adaptationSetBaseUrls\n * List of objects containing resolved base URLs and attributes\n * inherited by the AdaptationSet\n * @param {SegmentInformation} adaptationSetSegmentInfo\n * Contains Segment information for the AdaptationSet\n * @return {inheritBaseUrlsCallback}\n * Callback map function\n */\n\nconst inheritBaseUrls = (adaptationSetAttributes, adaptationSetBaseUrls, adaptationSetSegmentInfo) => representation => {\n const repBaseUrlElements = findChildren(representation, 'BaseURL');\n const repBaseUrls = buildBaseUrls(adaptationSetBaseUrls, repBaseUrlElements);\n const attributes = merge(adaptationSetAttributes, parseAttributes(representation));\n const representationSegmentInfo = getSegmentInformation(representation);\n return repBaseUrls.map(baseUrl => {\n return {\n segmentInfo: merge(adaptationSetSegmentInfo, representationSegmentInfo),\n attributes: merge(attributes, baseUrl)\n };\n });\n};\n/**\n * Tranforms a series of content protection nodes to\n * an object containing pssh data by key system\n *\n * @param {Node[]} contentProtectionNodes\n * Content protection nodes\n * @return {Object}\n * Object containing pssh data by key system\n */\n\nconst generateKeySystemInformation = contentProtectionNodes => {\n return contentProtectionNodes.reduce((acc, node) => {\n const attributes = parseAttributes(node); // Although it could be argued that according to the UUID RFC spec the UUID string (a-f chars) should be generated\n // as a lowercase string it also mentions it should be treated as case-insensitive on input. Since the key system\n // UUIDs in the keySystemsMap are hardcoded as lowercase in the codebase there isn't any reason not to do\n // .toLowerCase() on the input UUID string from the manifest (at least I could not think of one).\n\n if (attributes.schemeIdUri) {\n attributes.schemeIdUri = attributes.schemeIdUri.toLowerCase();\n }\n\n const keySystem = keySystemsMap[attributes.schemeIdUri];\n\n if (keySystem) {\n acc[keySystem] = {\n attributes\n };\n const psshNode = findChildren(node, 'cenc:pssh')[0];\n\n if (psshNode) {\n const pssh = getContent(psshNode);\n acc[keySystem].pssh = pssh && decodeB64ToUint8Array(pssh);\n }\n }\n\n return acc;\n }, {});\n}; // defined in ANSI_SCTE 214-1 2016\n\n\nconst parseCaptionServiceMetadata = service => {\n // 608 captions\n if (service.schemeIdUri === 'urn:scte:dash:cc:cea-608:2015') {\n const values = typeof service.value !== 'string' ? [] : service.value.split(';');\n return values.map(value => {\n let channel;\n let language; // default language to value\n\n language = value;\n\n if (/^CC\\d=/.test(value)) {\n [channel, language] = value.split('=');\n } else if (/^CC\\d$/.test(value)) {\n channel = value;\n }\n\n return {\n channel,\n language\n };\n });\n } else if (service.schemeIdUri === 'urn:scte:dash:cc:cea-708:2015') {\n const values = typeof service.value !== 'string' ? [] : service.value.split(';');\n return values.map(value => {\n const flags = {\n // service or channel number 1-63\n 'channel': undefined,\n // language is a 3ALPHA per ISO 639.2/B\n // field is required\n 'language': undefined,\n // BIT 1/0 or ?\n // default value is 1, meaning 16:9 aspect ratio, 0 is 4:3, ? is unknown\n 'aspectRatio': 1,\n // BIT 1/0\n // easy reader flag indicated the text is tailed to the needs of beginning readers\n // default 0, or off\n 'easyReader': 0,\n // BIT 1/0\n // If 3d metadata is present (CEA-708.1) then 1\n // default 0\n '3D': 0\n };\n\n if (/=/.test(value)) {\n const [channel, opts = ''] = value.split('=');\n flags.channel = channel;\n flags.language = value;\n opts.split(',').forEach(opt => {\n const [name, val] = opt.split(':');\n\n if (name === 'lang') {\n flags.language = val; // er for easyReadery\n } else if (name === 'er') {\n flags.easyReader = Number(val); // war for wide aspect ratio\n } else if (name === 'war') {\n flags.aspectRatio = Number(val);\n } else if (name === '3D') {\n flags['3D'] = Number(val);\n }\n });\n } else {\n flags.language = value;\n }\n\n if (flags.channel) {\n flags.channel = 'SERVICE' + flags.channel;\n }\n\n return flags;\n });\n }\n};\n/**\n * A map callback that will parse all event stream data for a collection of periods\n * DASH ISO_IEC_23009 5.10.2.2\n * https://dashif-documents.azurewebsites.net/Events/master/event.html#mpd-event-timing\n *\n * @param {PeriodInformation} period object containing necessary period information\n * @return a collection of parsed eventstream event objects\n */\n\nconst toEventStream = period => {\n // get and flatten all EventStreams tags and parse attributes and children\n return flatten(findChildren(period.node, 'EventStream').map(eventStream => {\n const eventStreamAttributes = parseAttributes(eventStream);\n const schemeIdUri = eventStreamAttributes.schemeIdUri; // find all Events per EventStream tag and map to return objects\n\n return findChildren(eventStream, 'Event').map(event => {\n const eventAttributes = parseAttributes(event);\n const presentationTime = eventAttributes.presentationTime || 0;\n const timescale = eventStreamAttributes.timescale || 1;\n const duration = eventAttributes.duration || 0;\n const start = presentationTime / timescale + period.attributes.start;\n return {\n schemeIdUri,\n value: eventStreamAttributes.value,\n id: eventAttributes.id,\n start,\n end: start + duration / timescale,\n messageData: getContent(event) || eventAttributes.messageData,\n contentEncoding: eventStreamAttributes.contentEncoding,\n presentationTimeOffset: eventStreamAttributes.presentationTimeOffset || 0\n };\n });\n }));\n};\n/**\n * Maps an AdaptationSet node to a list of Representation information objects\n *\n * @name toRepresentationsCallback\n * @function\n * @param {Node} adaptationSet\n * AdaptationSet node from the mpd\n * @return {RepresentationInformation[]}\n * List of objects containing Representaion information\n */\n\n/**\n * Returns a callback for Array.prototype.map for mapping AdaptationSet nodes to a list of\n * Representation information objects\n *\n * @param {Object} periodAttributes\n * Contains attributes inherited by the Period\n * @param {Object[]} periodBaseUrls\n * Contains list of objects with resolved base urls and attributes\n * inherited by the Period\n * @param {string[]} periodSegmentInfo\n * Contains Segment Information at the period level\n * @return {toRepresentationsCallback}\n * Callback map function\n */\n\nconst toRepresentations = (periodAttributes, periodBaseUrls, periodSegmentInfo) => adaptationSet => {\n const adaptationSetAttributes = parseAttributes(adaptationSet);\n const adaptationSetBaseUrls = buildBaseUrls(periodBaseUrls, findChildren(adaptationSet, 'BaseURL'));\n const role = findChildren(adaptationSet, 'Role')[0];\n const roleAttributes = {\n role: parseAttributes(role)\n };\n let attrs = merge(periodAttributes, adaptationSetAttributes, roleAttributes);\n const accessibility = findChildren(adaptationSet, 'Accessibility')[0];\n const captionServices = parseCaptionServiceMetadata(parseAttributes(accessibility));\n\n if (captionServices) {\n attrs = merge(attrs, {\n captionServices\n });\n }\n\n const label = findChildren(adaptationSet, 'Label')[0];\n\n if (label && label.childNodes.length) {\n const labelVal = label.childNodes[0].nodeValue.trim();\n attrs = merge(attrs, {\n label: labelVal\n });\n }\n\n const contentProtection = generateKeySystemInformation(findChildren(adaptationSet, 'ContentProtection'));\n\n if (Object.keys(contentProtection).length) {\n attrs = merge(attrs, {\n contentProtection\n });\n }\n\n const segmentInfo = getSegmentInformation(adaptationSet);\n const representations = findChildren(adaptationSet, 'Representation');\n const adaptationSetSegmentInfo = merge(periodSegmentInfo, segmentInfo);\n return flatten(representations.map(inheritBaseUrls(attrs, adaptationSetBaseUrls, adaptationSetSegmentInfo)));\n};\n/**\n * Contains all period information for mapping nodes onto adaptation sets.\n *\n * @typedef {Object} PeriodInformation\n * @property {Node} period.node\n * Period node from the mpd\n * @property {Object} period.attributes\n * Parsed period attributes from node plus any added\n */\n\n/**\n * Maps a PeriodInformation object to a list of Representation information objects for all\n * AdaptationSet nodes contained within the Period.\n *\n * @name toAdaptationSetsCallback\n * @function\n * @param {PeriodInformation} period\n * Period object containing necessary period information\n * @param {number} periodStart\n * Start time of the Period within the mpd\n * @return {RepresentationInformation[]}\n * List of objects containing Representaion information\n */\n\n/**\n * Returns a callback for Array.prototype.map for mapping Period nodes to a list of\n * Representation information objects\n *\n * @param {Object} mpdAttributes\n * Contains attributes inherited by the mpd\n * @param {Object[]} mpdBaseUrls\n * Contains list of objects with resolved base urls and attributes\n * inherited by the mpd\n * @return {toAdaptationSetsCallback}\n * Callback map function\n */\n\nconst toAdaptationSets = (mpdAttributes, mpdBaseUrls) => (period, index) => {\n const periodBaseUrls = buildBaseUrls(mpdBaseUrls, findChildren(period.node, 'BaseURL'));\n const periodAttributes = merge(mpdAttributes, {\n periodStart: period.attributes.start\n });\n\n if (typeof period.attributes.duration === 'number') {\n periodAttributes.periodDuration = period.attributes.duration;\n }\n\n const adaptationSets = findChildren(period.node, 'AdaptationSet');\n const periodSegmentInfo = getSegmentInformation(period.node);\n return flatten(adaptationSets.map(toRepresentations(periodAttributes, periodBaseUrls, periodSegmentInfo)));\n};\n/**\n * Tranforms an array of content steering nodes into an object\n * containing CDN content steering information from the MPD manifest.\n *\n * For more information on the DASH spec for Content Steering parsing, see:\n * https://dashif.org/docs/DASH-IF-CTS-00XX-Content-Steering-Community-Review.pdf\n *\n * @param {Node[]} contentSteeringNodes\n * Content steering nodes\n * @param {Function} eventHandler\n * The event handler passed into the parser options to handle warnings\n * @return {Object}\n * Object containing content steering data\n */\n\nconst generateContentSteeringInformation = (contentSteeringNodes, eventHandler) => {\n // If there are more than one ContentSteering tags, throw an error\n if (contentSteeringNodes.length > 1) {\n eventHandler({\n type: 'warn',\n message: 'The MPD manifest should contain no more than one ContentSteering tag'\n });\n } // Return a null value if there are no ContentSteering tags\n\n\n if (!contentSteeringNodes.length) {\n return null;\n }\n\n const infoFromContentSteeringTag = merge({\n serverURL: getContent(contentSteeringNodes[0])\n }, parseAttributes(contentSteeringNodes[0])); // Converts `queryBeforeStart` to a boolean, as well as setting the default value\n // to `false` if it doesn't exist\n\n infoFromContentSteeringTag.queryBeforeStart = infoFromContentSteeringTag.queryBeforeStart === 'true';\n return infoFromContentSteeringTag;\n};\n/**\n * Gets Period@start property for a given period.\n *\n * @param {Object} options\n * Options object\n * @param {Object} options.attributes\n * Period attributes\n * @param {Object} [options.priorPeriodAttributes]\n * Prior period attributes (if prior period is available)\n * @param {string} options.mpdType\n * The MPD@type these periods came from\n * @return {number|null}\n * The period start, or null if it's an early available period or error\n */\n\nconst getPeriodStart = ({\n attributes,\n priorPeriodAttributes,\n mpdType\n}) => {\n // Summary of period start time calculation from DASH spec section 5.3.2.1\n //\n // A period's start is the first period's start + time elapsed after playing all\n // prior periods to this one. Periods continue one after the other in time (without\n // gaps) until the end of the presentation.\n //\n // The value of Period@start should be:\n // 1. if Period@start is present: value of Period@start\n // 2. if previous period exists and it has @duration: previous Period@start +\n // previous Period@duration\n // 3. if this is first period and MPD@type is 'static': 0\n // 4. in all other cases, consider the period an \"early available period\" (note: not\n // currently supported)\n // (1)\n if (typeof attributes.start === 'number') {\n return attributes.start;\n } // (2)\n\n\n if (priorPeriodAttributes && typeof priorPeriodAttributes.start === 'number' && typeof priorPeriodAttributes.duration === 'number') {\n return priorPeriodAttributes.start + priorPeriodAttributes.duration;\n } // (3)\n\n\n if (!priorPeriodAttributes && mpdType === 'static') {\n return 0;\n } // (4)\n // There is currently no logic for calculating the Period@start value if there is\n // no Period@start or prior Period@start and Period@duration available. This is not made\n // explicit by the DASH interop guidelines or the DASH spec, however, since there's\n // nothing about any other resolution strategies, it's implied. Thus, this case should\n // be considered an early available period, or error, and null should suffice for both\n // of those cases.\n\n\n return null;\n};\n/**\n * Traverses the mpd xml tree to generate a list of Representation information objects\n * that have inherited attributes from parent nodes\n *\n * @param {Node} mpd\n * The root node of the mpd\n * @param {Object} options\n * Available options for inheritAttributes\n * @param {string} options.manifestUri\n * The uri source of the mpd\n * @param {number} options.NOW\n * Current time per DASH IOP. Default is current time in ms since epoch\n * @param {number} options.clientOffset\n * Client time difference from NOW (in milliseconds)\n * @return {RepresentationInformation[]}\n * List of objects containing Representation information\n */\n\nconst inheritAttributes = (mpd, options = {}) => {\n const {\n manifestUri = '',\n NOW = Date.now(),\n clientOffset = 0,\n // TODO: For now, we are expecting an eventHandler callback function\n // to be passed into the mpd parser as an option.\n // In the future, we should enable stream parsing by using the Stream class from vhs-utils.\n // This will support new features including a standardized event handler.\n // See the m3u8 parser for examples of how stream parsing is currently used for HLS parsing.\n // https://github.com/videojs/vhs-utils/blob/88d6e10c631e57a5af02c5a62bc7376cd456b4f5/src/stream.js#L9\n eventHandler = function () {}\n } = options;\n const periodNodes = findChildren(mpd, 'Period');\n\n if (!periodNodes.length) {\n throw new Error(errors.INVALID_NUMBER_OF_PERIOD);\n }\n\n const locations = findChildren(mpd, 'Location');\n const mpdAttributes = parseAttributes(mpd);\n const mpdBaseUrls = buildBaseUrls([{\n baseUrl: manifestUri\n }], findChildren(mpd, 'BaseURL'));\n const contentSteeringNodes = findChildren(mpd, 'ContentSteering'); // See DASH spec section 5.3.1.2, Semantics of MPD element. Default type to 'static'.\n\n mpdAttributes.type = mpdAttributes.type || 'static';\n mpdAttributes.sourceDuration = mpdAttributes.mediaPresentationDuration || 0;\n mpdAttributes.NOW = NOW;\n mpdAttributes.clientOffset = clientOffset;\n\n if (locations.length) {\n mpdAttributes.locations = locations.map(getContent);\n }\n\n const periods = []; // Since toAdaptationSets acts on individual periods right now, the simplest approach to\n // adding properties that require looking at prior periods is to parse attributes and add\n // missing ones before toAdaptationSets is called. If more such properties are added, it\n // may be better to refactor toAdaptationSets.\n\n periodNodes.forEach((node, index) => {\n const attributes = parseAttributes(node); // Use the last modified prior period, as it may contain added information necessary\n // for this period.\n\n const priorPeriod = periods[index - 1];\n attributes.start = getPeriodStart({\n attributes,\n priorPeriodAttributes: priorPeriod ? priorPeriod.attributes : null,\n mpdType: mpdAttributes.type\n });\n periods.push({\n node,\n attributes\n });\n });\n return {\n locations: mpdAttributes.locations,\n contentSteeringInfo: generateContentSteeringInformation(contentSteeringNodes, eventHandler),\n // TODO: There are occurences where this `representationInfo` array contains undesired\n // duplicates. This generally occurs when there are multiple BaseURL nodes that are\n // direct children of the MPD node. When we attempt to resolve URLs from a combination of the\n // parent BaseURL and a child BaseURL, and the value does not resolve,\n // we end up returning the child BaseURL multiple times.\n // We need to determine a way to remove these duplicates in a safe way.\n // See: https://github.com/videojs/mpd-parser/pull/17#discussion_r162750527\n representationInfo: flatten(periods.map(toAdaptationSets(mpdAttributes, mpdBaseUrls))),\n eventStream: flatten(periods.map(toEventStream))\n };\n};\n\nconst stringToMpdXml = manifestString => {\n if (manifestString === '') {\n throw new Error(errors.DASH_EMPTY_MANIFEST);\n }\n\n const parser = new DOMParser();\n let xml;\n let mpd;\n\n try {\n xml = parser.parseFromString(manifestString, 'application/xml');\n mpd = xml && xml.documentElement.tagName === 'MPD' ? xml.documentElement : null;\n } catch (e) {// ie 11 throws on invalid xml\n }\n\n if (!mpd || mpd && mpd.getElementsByTagName('parsererror').length > 0) {\n throw new Error(errors.DASH_INVALID_XML);\n }\n\n return mpd;\n};\n\n/**\n * Parses the manifest for a UTCTiming node, returning the nodes attributes if found\n *\n * @param {string} mpd\n * XML string of the MPD manifest\n * @return {Object|null}\n * Attributes of UTCTiming node specified in the manifest. Null if none found\n */\n\nconst parseUTCTimingScheme = mpd => {\n const UTCTimingNode = findChildren(mpd, 'UTCTiming')[0];\n\n if (!UTCTimingNode) {\n return null;\n }\n\n const attributes = parseAttributes(UTCTimingNode);\n\n switch (attributes.schemeIdUri) {\n case 'urn:mpeg:dash:utc:http-head:2014':\n case 'urn:mpeg:dash:utc:http-head:2012':\n attributes.method = 'HEAD';\n break;\n\n case 'urn:mpeg:dash:utc:http-xsdate:2014':\n case 'urn:mpeg:dash:utc:http-iso:2014':\n case 'urn:mpeg:dash:utc:http-xsdate:2012':\n case 'urn:mpeg:dash:utc:http-iso:2012':\n attributes.method = 'GET';\n break;\n\n case 'urn:mpeg:dash:utc:direct:2014':\n case 'urn:mpeg:dash:utc:direct:2012':\n attributes.method = 'DIRECT';\n attributes.value = Date.parse(attributes.value);\n break;\n\n case 'urn:mpeg:dash:utc:http-ntp:2014':\n case 'urn:mpeg:dash:utc:ntp:2014':\n case 'urn:mpeg:dash:utc:sntp:2014':\n default:\n throw new Error(errors.UNSUPPORTED_UTC_TIMING_SCHEME);\n }\n\n return attributes;\n};\n\nconst VERSION = version;\n/*\n * Given a DASH manifest string and options, parses the DASH manifest into an object in the\n * form outputed by m3u8-parser and accepted by videojs/http-streaming.\n *\n * For live DASH manifests, if `previousManifest` is provided in options, then the newly\n * parsed DASH manifest will have its media sequence and discontinuity sequence values\n * updated to reflect its position relative to the prior manifest.\n *\n * @param {string} manifestString - the DASH manifest as a string\n * @param {options} [options] - any options\n *\n * @return {Object} the manifest object\n */\n\nconst parse = (manifestString, options = {}) => {\n const parsedManifestInfo = inheritAttributes(stringToMpdXml(manifestString), options);\n const playlists = toPlaylists(parsedManifestInfo.representationInfo);\n return toM3u8({\n dashPlaylists: playlists,\n locations: parsedManifestInfo.locations,\n contentSteering: parsedManifestInfo.contentSteeringInfo,\n sidxMapping: options.sidxMapping,\n previousManifest: options.previousManifest,\n eventStream: parsedManifestInfo.eventStream\n });\n};\n/**\n * Parses the manifest for a UTCTiming node, returning the nodes attributes if found\n *\n * @param {string} manifestString\n * XML string of the MPD manifest\n * @return {Object|null}\n * Attributes of UTCTiming node specified in the manifest. Null if none found\n */\n\n\nconst parseUTCTiming = manifestString => parseUTCTimingScheme(stringToMpdXml(manifestString));\n\nexport { VERSION, addSidxSegmentsToPlaylist$1 as addSidxSegmentsToPlaylist, generateSidxKey, inheritAttributes, parse, parseUTCTiming, stringToMpdXml, toM3u8, toPlaylists };\n","import window from 'global/window';\n\nvar atob = function atob(s) {\n return window.atob ? window.atob(s) : Buffer.from(s, 'base64').toString('binary');\n};\n\nexport default function decodeB64ToUint8Array(b64Text) {\n var decodedString = atob(b64Text);\n var array = new Uint8Array(decodedString.length);\n\n for (var i = 0; i < decodedString.length; i++) {\n array[i] = decodedString.charCodeAt(i);\n }\n\n return array;\n}","/**\n * Loops through all supported media groups in master and calls the provided\n * callback for each group\n *\n * @param {Object} master\n * The parsed master manifest object\n * @param {string[]} groups\n * The media groups to call the callback for\n * @param {Function} callback\n * Callback to call for each media group\n */\nexport var forEachMediaGroup = function forEachMediaGroup(master, groups, callback) {\n groups.forEach(function (mediaType) {\n for (var groupKey in master.mediaGroups[mediaType]) {\n for (var labelKey in master.mediaGroups[mediaType][groupKey]) {\n var mediaProperties = master.mediaGroups[mediaType][groupKey][labelKey];\n callback(mediaProperties, mediaType, groupKey, labelKey);\n }\n }\n });\n};","import URLToolkit from 'url-toolkit';\nimport window from 'global/window';\nvar DEFAULT_LOCATION = 'http://example.com';\n\nvar resolveUrl = function resolveUrl(baseUrl, relativeUrl) {\n // return early if we don't need to resolve\n if (/^[a-z]+:/i.test(relativeUrl)) {\n return relativeUrl;\n } // if baseUrl is a data URI, ignore it and resolve everything relative to window.location\n\n\n if (/^data:/.test(baseUrl)) {\n baseUrl = window.location && window.location.href || '';\n } // IE11 supports URL but not the URL constructor\n // feature detect the behavior we want\n\n\n var nativeURL = typeof window.URL === 'function';\n var protocolLess = /^\\/\\//.test(baseUrl); // remove location if window.location isn't available (i.e. we're in node)\n // and if baseUrl isn't an absolute url\n\n var removeLocation = !window.location && !/\\/\\//i.test(baseUrl); // if the base URL is relative then combine with the current location\n\n if (nativeURL) {\n baseUrl = new window.URL(baseUrl, window.location || DEFAULT_LOCATION);\n } else if (!/\\/\\//i.test(baseUrl)) {\n baseUrl = URLToolkit.buildAbsoluteURL(window.location && window.location.href || '', baseUrl);\n }\n\n if (nativeURL) {\n var newUrl = new URL(relativeUrl, baseUrl); // if we're a protocol-less url, remove the protocol\n // and if we're location-less, remove the location\n // otherwise, return the url unmodified\n\n if (removeLocation) {\n return newUrl.href.slice(DEFAULT_LOCATION.length);\n } else if (protocolLess) {\n return newUrl.href.slice(newUrl.protocol.length);\n }\n\n return newUrl.href;\n }\n\n return URLToolkit.buildAbsoluteURL(baseUrl, relativeUrl);\n};\n\nexport default resolveUrl;","'use strict'\n\n/**\n * Ponyfill for `Array.prototype.find` which is only available in ES6 runtimes.\n *\n * Works with anything that has a `length` property and index access properties, including NodeList.\n *\n * @template {unknown} T\n * @param {Array | ({length:number, [number]: T})} list\n * @param {function (item: T, index: number, list:Array | ({length:number, [number]: T})):boolean} predicate\n * @param {Partial>?} ac `Array.prototype` by default,\n * \t\t\t\tallows injecting a custom implementation in tests\n * @returns {T | undefined}\n *\n * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find\n * @see https://tc39.es/ecma262/multipage/indexed-collections.html#sec-array.prototype.find\n */\nfunction find(list, predicate, ac) {\n\tif (ac === undefined) {\n\t\tac = Array.prototype;\n\t}\n\tif (list && typeof ac.find === 'function') {\n\t\treturn ac.find.call(list, predicate);\n\t}\n\tfor (var i = 0; i < list.length; i++) {\n\t\tif (Object.prototype.hasOwnProperty.call(list, i)) {\n\t\t\tvar item = list[i];\n\t\t\tif (predicate.call(undefined, item, i, list)) {\n\t\t\t\treturn item;\n\t\t\t}\n\t\t}\n\t}\n}\n\n/**\n * \"Shallow freezes\" an object to render it immutable.\n * Uses `Object.freeze` if available,\n * otherwise the immutability is only in the type.\n *\n * Is used to create \"enum like\" objects.\n *\n * @template T\n * @param {T} object the object to freeze\n * @param {Pick = Object} oc `Object` by default,\n * \t\t\t\tallows to inject custom object constructor for tests\n * @returns {Readonly}\n *\n * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/freeze\n */\nfunction freeze(object, oc) {\n\tif (oc === undefined) {\n\t\toc = Object\n\t}\n\treturn oc && typeof oc.freeze === 'function' ? oc.freeze(object) : object\n}\n\n/**\n * Since we can not rely on `Object.assign` we provide a simplified version\n * that is sufficient for our needs.\n *\n * @param {Object} target\n * @param {Object | null | undefined} source\n *\n * @returns {Object} target\n * @throws TypeError if target is not an object\n *\n * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign\n * @see https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-object.assign\n */\nfunction assign(target, source) {\n\tif (target === null || typeof target !== 'object') {\n\t\tthrow new TypeError('target is not an object')\n\t}\n\tfor (var key in source) {\n\t\tif (Object.prototype.hasOwnProperty.call(source, key)) {\n\t\t\ttarget[key] = source[key]\n\t\t}\n\t}\n\treturn target\n}\n\n/**\n * All mime types that are allowed as input to `DOMParser.parseFromString`\n *\n * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString#Argument02 MDN\n * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#domparsersupportedtype WHATWG HTML Spec\n * @see DOMParser.prototype.parseFromString\n */\nvar MIME_TYPE = freeze({\n\t/**\n\t * `text/html`, the only mime type that triggers treating an XML document as HTML.\n\t *\n\t * @see DOMParser.SupportedType.isHTML\n\t * @see https://www.iana.org/assignments/media-types/text/html IANA MimeType registration\n\t * @see https://en.wikipedia.org/wiki/HTML Wikipedia\n\t * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString MDN\n\t * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-domparser-parsefromstring WHATWG HTML Spec\n\t */\n\tHTML: 'text/html',\n\n\t/**\n\t * Helper method to check a mime type if it indicates an HTML document\n\t *\n\t * @param {string} [value]\n\t * @returns {boolean}\n\t *\n\t * @see https://www.iana.org/assignments/media-types/text/html IANA MimeType registration\n\t * @see https://en.wikipedia.org/wiki/HTML Wikipedia\n\t * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString MDN\n\t * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-domparser-parsefromstring \t */\n\tisHTML: function (value) {\n\t\treturn value === MIME_TYPE.HTML\n\t},\n\n\t/**\n\t * `application/xml`, the standard mime type for XML documents.\n\t *\n\t * @see https://www.iana.org/assignments/media-types/application/xml IANA MimeType registration\n\t * @see https://tools.ietf.org/html/rfc7303#section-9.1 RFC 7303\n\t * @see https://en.wikipedia.org/wiki/XML_and_MIME Wikipedia\n\t */\n\tXML_APPLICATION: 'application/xml',\n\n\t/**\n\t * `text/html`, an alias for `application/xml`.\n\t *\n\t * @see https://tools.ietf.org/html/rfc7303#section-9.2 RFC 7303\n\t * @see https://www.iana.org/assignments/media-types/text/xml IANA MimeType registration\n\t * @see https://en.wikipedia.org/wiki/XML_and_MIME Wikipedia\n\t */\n\tXML_TEXT: 'text/xml',\n\n\t/**\n\t * `application/xhtml+xml`, indicates an XML document that has the default HTML namespace,\n\t * but is parsed as an XML document.\n\t *\n\t * @see https://www.iana.org/assignments/media-types/application/xhtml+xml IANA MimeType registration\n\t * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocument WHATWG DOM Spec\n\t * @see https://en.wikipedia.org/wiki/XHTML Wikipedia\n\t */\n\tXML_XHTML_APPLICATION: 'application/xhtml+xml',\n\n\t/**\n\t * `image/svg+xml`,\n\t *\n\t * @see https://www.iana.org/assignments/media-types/image/svg+xml IANA MimeType registration\n\t * @see https://www.w3.org/TR/SVG11/ W3C SVG 1.1\n\t * @see https://en.wikipedia.org/wiki/Scalable_Vector_Graphics Wikipedia\n\t */\n\tXML_SVG_IMAGE: 'image/svg+xml',\n})\n\n/**\n * Namespaces that are used in this code base.\n *\n * @see http://www.w3.org/TR/REC-xml-names\n */\nvar NAMESPACE = freeze({\n\t/**\n\t * The XHTML namespace.\n\t *\n\t * @see http://www.w3.org/1999/xhtml\n\t */\n\tHTML: 'http://www.w3.org/1999/xhtml',\n\n\t/**\n\t * Checks if `uri` equals `NAMESPACE.HTML`.\n\t *\n\t * @param {string} [uri]\n\t *\n\t * @see NAMESPACE.HTML\n\t */\n\tisHTML: function (uri) {\n\t\treturn uri === NAMESPACE.HTML\n\t},\n\n\t/**\n\t * The SVG namespace.\n\t *\n\t * @see http://www.w3.org/2000/svg\n\t */\n\tSVG: 'http://www.w3.org/2000/svg',\n\n\t/**\n\t * The `xml:` namespace.\n\t *\n\t * @see http://www.w3.org/XML/1998/namespace\n\t */\n\tXML: 'http://www.w3.org/XML/1998/namespace',\n\n\t/**\n\t * The `xmlns:` namespace\n\t *\n\t * @see https://www.w3.org/2000/xmlns/\n\t */\n\tXMLNS: 'http://www.w3.org/2000/xmlns/',\n})\n\nexports.assign = assign;\nexports.find = find;\nexports.freeze = freeze;\nexports.MIME_TYPE = MIME_TYPE;\nexports.NAMESPACE = NAMESPACE;\n","var conventions = require(\"./conventions\");\nvar dom = require('./dom')\nvar entities = require('./entities');\nvar sax = require('./sax');\n\nvar DOMImplementation = dom.DOMImplementation;\n\nvar NAMESPACE = conventions.NAMESPACE;\n\nvar ParseError = sax.ParseError;\nvar XMLReader = sax.XMLReader;\n\n/**\n * Normalizes line ending according to https://www.w3.org/TR/xml11/#sec-line-ends:\n *\n * > XML parsed entities are often stored in computer files which,\n * > for editing convenience, are organized into lines.\n * > These lines are typically separated by some combination\n * > of the characters CARRIAGE RETURN (#xD) and LINE FEED (#xA).\n * >\n * > To simplify the tasks of applications, the XML processor must behave\n * > as if it normalized all line breaks in external parsed entities (including the document entity)\n * > on input, before parsing, by translating all of the following to a single #xA character:\n * >\n * > 1. the two-character sequence #xD #xA\n * > 2. the two-character sequence #xD #x85\n * > 3. the single character #x85\n * > 4. the single character #x2028\n * > 5. any #xD character that is not immediately followed by #xA or #x85.\n *\n * @param {string} input\n * @returns {string}\n */\nfunction normalizeLineEndings(input) {\n\treturn input\n\t\t.replace(/\\r[\\n\\u0085]/g, '\\n')\n\t\t.replace(/[\\r\\u0085\\u2028]/g, '\\n')\n}\n\n/**\n * @typedef Locator\n * @property {number} [columnNumber]\n * @property {number} [lineNumber]\n */\n\n/**\n * @typedef DOMParserOptions\n * @property {DOMHandler} [domBuilder]\n * @property {Function} [errorHandler]\n * @property {(string) => string} [normalizeLineEndings] used to replace line endings before parsing\n * \t\t\t\t\t\tdefaults to `normalizeLineEndings`\n * @property {Locator} [locator]\n * @property {Record} [xmlns]\n *\n * @see normalizeLineEndings\n */\n\n/**\n * The DOMParser interface provides the ability to parse XML or HTML source code\n * from a string into a DOM `Document`.\n *\n * _xmldom is different from the spec in that it allows an `options` parameter,\n * to override the default behavior._\n *\n * @param {DOMParserOptions} [options]\n * @constructor\n *\n * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser\n * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-parsing-and-serialization\n */\nfunction DOMParser(options){\n\tthis.options = options ||{locator:{}};\n}\n\nDOMParser.prototype.parseFromString = function(source,mimeType){\n\tvar options = this.options;\n\tvar sax = new XMLReader();\n\tvar domBuilder = options.domBuilder || new DOMHandler();//contentHandler and LexicalHandler\n\tvar errorHandler = options.errorHandler;\n\tvar locator = options.locator;\n\tvar defaultNSMap = options.xmlns||{};\n\tvar isHTML = /\\/x?html?$/.test(mimeType);//mimeType.toLowerCase().indexOf('html') > -1;\n \tvar entityMap = isHTML ? entities.HTML_ENTITIES : entities.XML_ENTITIES;\n\tif(locator){\n\t\tdomBuilder.setDocumentLocator(locator)\n\t}\n\n\tsax.errorHandler = buildErrorHandler(errorHandler,domBuilder,locator);\n\tsax.domBuilder = options.domBuilder || domBuilder;\n\tif(isHTML){\n\t\tdefaultNSMap[''] = NAMESPACE.HTML;\n\t}\n\tdefaultNSMap.xml = defaultNSMap.xml || NAMESPACE.XML;\n\tvar normalize = options.normalizeLineEndings || normalizeLineEndings;\n\tif (source && typeof source === 'string') {\n\t\tsax.parse(\n\t\t\tnormalize(source),\n\t\t\tdefaultNSMap,\n\t\t\tentityMap\n\t\t)\n\t} else {\n\t\tsax.errorHandler.error('invalid doc source')\n\t}\n\treturn domBuilder.doc;\n}\nfunction buildErrorHandler(errorImpl,domBuilder,locator){\n\tif(!errorImpl){\n\t\tif(domBuilder instanceof DOMHandler){\n\t\t\treturn domBuilder;\n\t\t}\n\t\terrorImpl = domBuilder ;\n\t}\n\tvar errorHandler = {}\n\tvar isCallback = errorImpl instanceof Function;\n\tlocator = locator||{}\n\tfunction build(key){\n\t\tvar fn = errorImpl[key];\n\t\tif(!fn && isCallback){\n\t\t\tfn = errorImpl.length == 2?function(msg){errorImpl(key,msg)}:errorImpl;\n\t\t}\n\t\terrorHandler[key] = fn && function(msg){\n\t\t\tfn('[xmldom '+key+']\\t'+msg+_locator(locator));\n\t\t}||function(){};\n\t}\n\tbuild('warning');\n\tbuild('error');\n\tbuild('fatalError');\n\treturn errorHandler;\n}\n\n//console.log('#\\n\\n\\n\\n\\n\\n\\n####')\n/**\n * +ContentHandler+ErrorHandler\n * +LexicalHandler+EntityResolver2\n * -DeclHandler-DTDHandler\n *\n * DefaultHandler:EntityResolver, DTDHandler, ContentHandler, ErrorHandler\n * DefaultHandler2:DefaultHandler,LexicalHandler, DeclHandler, EntityResolver2\n * @link http://www.saxproject.org/apidoc/org/xml/sax/helpers/DefaultHandler.html\n */\nfunction DOMHandler() {\n this.cdata = false;\n}\nfunction position(locator,node){\n\tnode.lineNumber = locator.lineNumber;\n\tnode.columnNumber = locator.columnNumber;\n}\n/**\n * @see org.xml.sax.ContentHandler#startDocument\n * @link http://www.saxproject.org/apidoc/org/xml/sax/ContentHandler.html\n */\nDOMHandler.prototype = {\n\tstartDocument : function() {\n \tthis.doc = new DOMImplementation().createDocument(null, null, null);\n \tif (this.locator) {\n \tthis.doc.documentURI = this.locator.systemId;\n \t}\n\t},\n\tstartElement:function(namespaceURI, localName, qName, attrs) {\n\t\tvar doc = this.doc;\n\t var el = doc.createElementNS(namespaceURI, qName||localName);\n\t var len = attrs.length;\n\t appendElement(this, el);\n\t this.currentElement = el;\n\n\t\tthis.locator && position(this.locator,el)\n\t for (var i = 0 ; i < len; i++) {\n\t var namespaceURI = attrs.getURI(i);\n\t var value = attrs.getValue(i);\n\t var qName = attrs.getQName(i);\n\t\t\tvar attr = doc.createAttributeNS(namespaceURI, qName);\n\t\t\tthis.locator &&position(attrs.getLocator(i),attr);\n\t\t\tattr.value = attr.nodeValue = value;\n\t\t\tel.setAttributeNode(attr)\n\t }\n\t},\n\tendElement:function(namespaceURI, localName, qName) {\n\t\tvar current = this.currentElement\n\t\tvar tagName = current.tagName;\n\t\tthis.currentElement = current.parentNode;\n\t},\n\tstartPrefixMapping:function(prefix, uri) {\n\t},\n\tendPrefixMapping:function(prefix) {\n\t},\n\tprocessingInstruction:function(target, data) {\n\t var ins = this.doc.createProcessingInstruction(target, data);\n\t this.locator && position(this.locator,ins)\n\t appendElement(this, ins);\n\t},\n\tignorableWhitespace:function(ch, start, length) {\n\t},\n\tcharacters:function(chars, start, length) {\n\t\tchars = _toString.apply(this,arguments)\n\t\t//console.log(chars)\n\t\tif(chars){\n\t\t\tif (this.cdata) {\n\t\t\t\tvar charNode = this.doc.createCDATASection(chars);\n\t\t\t} else {\n\t\t\t\tvar charNode = this.doc.createTextNode(chars);\n\t\t\t}\n\t\t\tif(this.currentElement){\n\t\t\t\tthis.currentElement.appendChild(charNode);\n\t\t\t}else if(/^\\s*$/.test(chars)){\n\t\t\t\tthis.doc.appendChild(charNode);\n\t\t\t\t//process xml\n\t\t\t}\n\t\t\tthis.locator && position(this.locator,charNode)\n\t\t}\n\t},\n\tskippedEntity:function(name) {\n\t},\n\tendDocument:function() {\n\t\tthis.doc.normalize();\n\t},\n\tsetDocumentLocator:function (locator) {\n\t if(this.locator = locator){// && !('lineNumber' in locator)){\n\t \tlocator.lineNumber = 0;\n\t }\n\t},\n\t//LexicalHandler\n\tcomment:function(chars, start, length) {\n\t\tchars = _toString.apply(this,arguments)\n\t var comm = this.doc.createComment(chars);\n\t this.locator && position(this.locator,comm)\n\t appendElement(this, comm);\n\t},\n\n\tstartCDATA:function() {\n\t //used in characters() methods\n\t this.cdata = true;\n\t},\n\tendCDATA:function() {\n\t this.cdata = false;\n\t},\n\n\tstartDTD:function(name, publicId, systemId) {\n\t\tvar impl = this.doc.implementation;\n\t if (impl && impl.createDocumentType) {\n\t var dt = impl.createDocumentType(name, publicId, systemId);\n\t this.locator && position(this.locator,dt)\n\t appendElement(this, dt);\n\t\t\t\t\tthis.doc.doctype = dt;\n\t }\n\t},\n\t/**\n\t * @see org.xml.sax.ErrorHandler\n\t * @link http://www.saxproject.org/apidoc/org/xml/sax/ErrorHandler.html\n\t */\n\twarning:function(error) {\n\t\tconsole.warn('[xmldom warning]\\t'+error,_locator(this.locator));\n\t},\n\terror:function(error) {\n\t\tconsole.error('[xmldom error]\\t'+error,_locator(this.locator));\n\t},\n\tfatalError:function(error) {\n\t\tthrow new ParseError(error, this.locator);\n\t}\n}\nfunction _locator(l){\n\tif(l){\n\t\treturn '\\n@'+(l.systemId ||'')+'#[line:'+l.lineNumber+',col:'+l.columnNumber+']'\n\t}\n}\nfunction _toString(chars,start,length){\n\tif(typeof chars == 'string'){\n\t\treturn chars.substr(start,length)\n\t}else{//java sax connect width xmldom on rhino(what about: \"? && !(chars instanceof String)\")\n\t\tif(chars.length >= start+length || start){\n\t\t\treturn new java.lang.String(chars,start,length)+'';\n\t\t}\n\t\treturn chars;\n\t}\n}\n\n/*\n * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/LexicalHandler.html\n * used method of org.xml.sax.ext.LexicalHandler:\n * #comment(chars, start, length)\n * #startCDATA()\n * #endCDATA()\n * #startDTD(name, publicId, systemId)\n *\n *\n * IGNORED method of org.xml.sax.ext.LexicalHandler:\n * #endDTD()\n * #startEntity(name)\n * #endEntity(name)\n *\n *\n * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/DeclHandler.html\n * IGNORED method of org.xml.sax.ext.DeclHandler\n * \t#attributeDecl(eName, aName, type, mode, value)\n * #elementDecl(name, model)\n * #externalEntityDecl(name, publicId, systemId)\n * #internalEntityDecl(name, value)\n * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/EntityResolver2.html\n * IGNORED method of org.xml.sax.EntityResolver2\n * #resolveEntity(String name,String publicId,String baseURI,String systemId)\n * #resolveEntity(publicId, systemId)\n * #getExternalSubset(name, baseURI)\n * @link http://www.saxproject.org/apidoc/org/xml/sax/DTDHandler.html\n * IGNORED method of org.xml.sax.DTDHandler\n * #notationDecl(name, publicId, systemId) {};\n * #unparsedEntityDecl(name, publicId, systemId, notationName) {};\n */\n\"endDTD,startEntity,endEntity,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,resolveEntity,getExternalSubset,notationDecl,unparsedEntityDecl\".replace(/\\w+/g,function(key){\n\tDOMHandler.prototype[key] = function(){return null}\n})\n\n/* Private static helpers treated below as private instance methods, so don't need to add these to the public API; we might use a Relator to also get rid of non-standard public properties */\nfunction appendElement (hander,node) {\n if (!hander.currentElement) {\n hander.doc.appendChild(node);\n } else {\n hander.currentElement.appendChild(node);\n }\n}//appendChild and setAttributeNS are preformance key\n\nexports.__DOMHandler = DOMHandler;\nexports.normalizeLineEndings = normalizeLineEndings;\nexports.DOMParser = DOMParser;\n","var conventions = require(\"./conventions\");\n\nvar find = conventions.find;\nvar NAMESPACE = conventions.NAMESPACE;\n\n/**\n * A prerequisite for `[].filter`, to drop elements that are empty\n * @param {string} input\n * @returns {boolean}\n */\nfunction notEmptyString (input) {\n\treturn input !== ''\n}\n/**\n * @see https://infra.spec.whatwg.org/#split-on-ascii-whitespace\n * @see https://infra.spec.whatwg.org/#ascii-whitespace\n *\n * @param {string} input\n * @returns {string[]} (can be empty)\n */\nfunction splitOnASCIIWhitespace(input) {\n\t// U+0009 TAB, U+000A LF, U+000C FF, U+000D CR, U+0020 SPACE\n\treturn input ? input.split(/[\\t\\n\\f\\r ]+/).filter(notEmptyString) : []\n}\n\n/**\n * Adds element as a key to current if it is not already present.\n *\n * @param {Record} current\n * @param {string} element\n * @returns {Record}\n */\nfunction orderedSetReducer (current, element) {\n\tif (!current.hasOwnProperty(element)) {\n\t\tcurrent[element] = true;\n\t}\n\treturn current;\n}\n\n/**\n * @see https://infra.spec.whatwg.org/#ordered-set\n * @param {string} input\n * @returns {string[]}\n */\nfunction toOrderedSet(input) {\n\tif (!input) return [];\n\tvar list = splitOnASCIIWhitespace(input);\n\treturn Object.keys(list.reduce(orderedSetReducer, {}))\n}\n\n/**\n * Uses `list.indexOf` to implement something like `Array.prototype.includes`,\n * which we can not rely on being available.\n *\n * @param {any[]} list\n * @returns {function(any): boolean}\n */\nfunction arrayIncludes (list) {\n\treturn function(element) {\n\t\treturn list && list.indexOf(element) !== -1;\n\t}\n}\n\nfunction copy(src,dest){\n\tfor(var p in src){\n\t\tif (Object.prototype.hasOwnProperty.call(src, p)) {\n\t\t\tdest[p] = src[p];\n\t\t}\n\t}\n}\n\n/**\n^\\w+\\.prototype\\.([_\\w]+)\\s*=\\s*((?:.*\\{\\s*?[\\r\\n][\\s\\S]*?^})|\\S.*?(?=[;\\r\\n]));?\n^\\w+\\.prototype\\.([_\\w]+)\\s*=\\s*(\\S.*?(?=[;\\r\\n]));?\n */\nfunction _extends(Class,Super){\n\tvar pt = Class.prototype;\n\tif(!(pt instanceof Super)){\n\t\tfunction t(){};\n\t\tt.prototype = Super.prototype;\n\t\tt = new t();\n\t\tcopy(pt,t);\n\t\tClass.prototype = pt = t;\n\t}\n\tif(pt.constructor != Class){\n\t\tif(typeof Class != 'function'){\n\t\t\tconsole.error(\"unknown Class:\"+Class)\n\t\t}\n\t\tpt.constructor = Class\n\t}\n}\n\n// Node Types\nvar NodeType = {}\nvar ELEMENT_NODE = NodeType.ELEMENT_NODE = 1;\nvar ATTRIBUTE_NODE = NodeType.ATTRIBUTE_NODE = 2;\nvar TEXT_NODE = NodeType.TEXT_NODE = 3;\nvar CDATA_SECTION_NODE = NodeType.CDATA_SECTION_NODE = 4;\nvar ENTITY_REFERENCE_NODE = NodeType.ENTITY_REFERENCE_NODE = 5;\nvar ENTITY_NODE = NodeType.ENTITY_NODE = 6;\nvar PROCESSING_INSTRUCTION_NODE = NodeType.PROCESSING_INSTRUCTION_NODE = 7;\nvar COMMENT_NODE = NodeType.COMMENT_NODE = 8;\nvar DOCUMENT_NODE = NodeType.DOCUMENT_NODE = 9;\nvar DOCUMENT_TYPE_NODE = NodeType.DOCUMENT_TYPE_NODE = 10;\nvar DOCUMENT_FRAGMENT_NODE = NodeType.DOCUMENT_FRAGMENT_NODE = 11;\nvar NOTATION_NODE = NodeType.NOTATION_NODE = 12;\n\n// ExceptionCode\nvar ExceptionCode = {}\nvar ExceptionMessage = {};\nvar INDEX_SIZE_ERR = ExceptionCode.INDEX_SIZE_ERR = ((ExceptionMessage[1]=\"Index size error\"),1);\nvar DOMSTRING_SIZE_ERR = ExceptionCode.DOMSTRING_SIZE_ERR = ((ExceptionMessage[2]=\"DOMString size error\"),2);\nvar HIERARCHY_REQUEST_ERR = ExceptionCode.HIERARCHY_REQUEST_ERR = ((ExceptionMessage[3]=\"Hierarchy request error\"),3);\nvar WRONG_DOCUMENT_ERR = ExceptionCode.WRONG_DOCUMENT_ERR = ((ExceptionMessage[4]=\"Wrong document\"),4);\nvar INVALID_CHARACTER_ERR = ExceptionCode.INVALID_CHARACTER_ERR = ((ExceptionMessage[5]=\"Invalid character\"),5);\nvar NO_DATA_ALLOWED_ERR = ExceptionCode.NO_DATA_ALLOWED_ERR = ((ExceptionMessage[6]=\"No data allowed\"),6);\nvar NO_MODIFICATION_ALLOWED_ERR = ExceptionCode.NO_MODIFICATION_ALLOWED_ERR = ((ExceptionMessage[7]=\"No modification allowed\"),7);\nvar NOT_FOUND_ERR = ExceptionCode.NOT_FOUND_ERR = ((ExceptionMessage[8]=\"Not found\"),8);\nvar NOT_SUPPORTED_ERR = ExceptionCode.NOT_SUPPORTED_ERR = ((ExceptionMessage[9]=\"Not supported\"),9);\nvar INUSE_ATTRIBUTE_ERR = ExceptionCode.INUSE_ATTRIBUTE_ERR = ((ExceptionMessage[10]=\"Attribute in use\"),10);\n//level2\nvar INVALID_STATE_ERR \t= ExceptionCode.INVALID_STATE_ERR \t= ((ExceptionMessage[11]=\"Invalid state\"),11);\nvar SYNTAX_ERR \t= ExceptionCode.SYNTAX_ERR \t= ((ExceptionMessage[12]=\"Syntax error\"),12);\nvar INVALID_MODIFICATION_ERR \t= ExceptionCode.INVALID_MODIFICATION_ERR \t= ((ExceptionMessage[13]=\"Invalid modification\"),13);\nvar NAMESPACE_ERR \t= ExceptionCode.NAMESPACE_ERR \t= ((ExceptionMessage[14]=\"Invalid namespace\"),14);\nvar INVALID_ACCESS_ERR \t= ExceptionCode.INVALID_ACCESS_ERR \t= ((ExceptionMessage[15]=\"Invalid access\"),15);\n\n/**\n * DOM Level 2\n * Object DOMException\n * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/ecma-script-binding.html\n * @see http://www.w3.org/TR/REC-DOM-Level-1/ecma-script-language-binding.html\n */\nfunction DOMException(code, message) {\n\tif(message instanceof Error){\n\t\tvar error = message;\n\t}else{\n\t\terror = this;\n\t\tError.call(this, ExceptionMessage[code]);\n\t\tthis.message = ExceptionMessage[code];\n\t\tif(Error.captureStackTrace) Error.captureStackTrace(this, DOMException);\n\t}\n\terror.code = code;\n\tif(message) this.message = this.message + \": \" + message;\n\treturn error;\n};\nDOMException.prototype = Error.prototype;\ncopy(ExceptionCode,DOMException)\n\n/**\n * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-536297177\n * The NodeList interface provides the abstraction of an ordered collection of nodes, without defining or constraining how this collection is implemented. NodeList objects in the DOM are live.\n * The items in the NodeList are accessible via an integral index, starting from 0.\n */\nfunction NodeList() {\n};\nNodeList.prototype = {\n\t/**\n\t * The number of nodes in the list. The range of valid child node indices is 0 to length-1 inclusive.\n\t * @standard level1\n\t */\n\tlength:0,\n\t/**\n\t * Returns the indexth item in the collection. If index is greater than or equal to the number of nodes in the list, this returns null.\n\t * @standard level1\n\t * @param index unsigned long\n\t * Index into the collection.\n\t * @return Node\n\t * \tThe node at the indexth position in the NodeList, or null if that is not a valid index.\n\t */\n\titem: function(index) {\n\t\treturn index >= 0 && index < this.length ? this[index] : null;\n\t},\n\ttoString:function(isHTML,nodeFilter){\n\t\tfor(var buf = [], i = 0;i=0){\n\t\tvar lastIndex = list.length-1\n\t\twhile(i0 || key == 'xmlns'){\n//\t\t\treturn null;\n//\t\t}\n\t\t//console.log()\n\t\tvar i = this.length;\n\t\twhile(i--){\n\t\t\tvar attr = this[i];\n\t\t\t//console.log(attr.nodeName,key)\n\t\t\tif(attr.nodeName == key){\n\t\t\t\treturn attr;\n\t\t\t}\n\t\t}\n\t},\n\tsetNamedItem: function(attr) {\n\t\tvar el = attr.ownerElement;\n\t\tif(el && el!=this._ownerElement){\n\t\t\tthrow new DOMException(INUSE_ATTRIBUTE_ERR);\n\t\t}\n\t\tvar oldAttr = this.getNamedItem(attr.nodeName);\n\t\t_addNamedNode(this._ownerElement,this,attr,oldAttr);\n\t\treturn oldAttr;\n\t},\n\t/* returns Node */\n\tsetNamedItemNS: function(attr) {// raises: WRONG_DOCUMENT_ERR,NO_MODIFICATION_ALLOWED_ERR,INUSE_ATTRIBUTE_ERR\n\t\tvar el = attr.ownerElement, oldAttr;\n\t\tif(el && el!=this._ownerElement){\n\t\t\tthrow new DOMException(INUSE_ATTRIBUTE_ERR);\n\t\t}\n\t\toldAttr = this.getNamedItemNS(attr.namespaceURI,attr.localName);\n\t\t_addNamedNode(this._ownerElement,this,attr,oldAttr);\n\t\treturn oldAttr;\n\t},\n\n\t/* returns Node */\n\tremoveNamedItem: function(key) {\n\t\tvar attr = this.getNamedItem(key);\n\t\t_removeNamedNode(this._ownerElement,this,attr);\n\t\treturn attr;\n\n\n\t},// raises: NOT_FOUND_ERR,NO_MODIFICATION_ALLOWED_ERR\n\n\t//for level2\n\tremoveNamedItemNS:function(namespaceURI,localName){\n\t\tvar attr = this.getNamedItemNS(namespaceURI,localName);\n\t\t_removeNamedNode(this._ownerElement,this,attr);\n\t\treturn attr;\n\t},\n\tgetNamedItemNS: function(namespaceURI, localName) {\n\t\tvar i = this.length;\n\t\twhile(i--){\n\t\t\tvar node = this[i];\n\t\t\tif(node.localName == localName && node.namespaceURI == namespaceURI){\n\t\t\t\treturn node;\n\t\t\t}\n\t\t}\n\t\treturn null;\n\t}\n};\n\n/**\n * The DOMImplementation interface represents an object providing methods\n * which are not dependent on any particular document.\n * Such an object is returned by the `Document.implementation` property.\n *\n * __The individual methods describe the differences compared to the specs.__\n *\n * @constructor\n *\n * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation MDN\n * @see https://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-102161490 DOM Level 1 Core (Initial)\n * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#ID-102161490 DOM Level 2 Core\n * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#ID-102161490 DOM Level 3 Core\n * @see https://dom.spec.whatwg.org/#domimplementation DOM Living Standard\n */\nfunction DOMImplementation() {\n}\n\nDOMImplementation.prototype = {\n\t/**\n\t * The DOMImplementation.hasFeature() method returns a Boolean flag indicating if a given feature is supported.\n\t * The different implementations fairly diverged in what kind of features were reported.\n\t * The latest version of the spec settled to force this method to always return true, where the functionality was accurate and in use.\n\t *\n\t * @deprecated It is deprecated and modern browsers return true in all cases.\n\t *\n\t * @param {string} feature\n\t * @param {string} [version]\n\t * @returns {boolean} always true\n\t *\n\t * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/hasFeature MDN\n\t * @see https://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-5CED94D7 DOM Level 1 Core\n\t * @see https://dom.spec.whatwg.org/#dom-domimplementation-hasfeature DOM Living Standard\n\t */\n\thasFeature: function(feature, version) {\n\t\t\treturn true;\n\t},\n\t/**\n\t * Creates an XML Document object of the specified type with its document element.\n\t *\n\t * __It behaves slightly different from the description in the living standard__:\n\t * - There is no interface/class `XMLDocument`, it returns a `Document` instance.\n\t * - `contentType`, `encoding`, `mode`, `origin`, `url` fields are currently not declared.\n\t * - this implementation is not validating names or qualified names\n\t * (when parsing XML strings, the SAX parser takes care of that)\n\t *\n\t * @param {string|null} namespaceURI\n\t * @param {string} qualifiedName\n\t * @param {DocumentType=null} doctype\n\t * @returns {Document}\n\t *\n\t * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/createDocument MDN\n\t * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#Level-2-Core-DOM-createDocument DOM Level 2 Core (initial)\n\t * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocument DOM Level 2 Core\n\t *\n\t * @see https://dom.spec.whatwg.org/#validate-and-extract DOM: Validate and extract\n\t * @see https://www.w3.org/TR/xml/#NT-NameStartChar XML Spec: Names\n\t * @see https://www.w3.org/TR/xml-names/#ns-qualnames XML Namespaces: Qualified names\n\t */\n\tcreateDocument: function(namespaceURI, qualifiedName, doctype){\n\t\tvar doc = new Document();\n\t\tdoc.implementation = this;\n\t\tdoc.childNodes = new NodeList();\n\t\tdoc.doctype = doctype || null;\n\t\tif (doctype){\n\t\t\tdoc.appendChild(doctype);\n\t\t}\n\t\tif (qualifiedName){\n\t\t\tvar root = doc.createElementNS(namespaceURI, qualifiedName);\n\t\t\tdoc.appendChild(root);\n\t\t}\n\t\treturn doc;\n\t},\n\t/**\n\t * Returns a doctype, with the given `qualifiedName`, `publicId`, and `systemId`.\n\t *\n\t * __This behavior is slightly different from the in the specs__:\n\t * - this implementation is not validating names or qualified names\n\t * (when parsing XML strings, the SAX parser takes care of that)\n\t *\n\t * @param {string} qualifiedName\n\t * @param {string} [publicId]\n\t * @param {string} [systemId]\n\t * @returns {DocumentType} which can either be used with `DOMImplementation.createDocument` upon document creation\n\t * \t\t\t\t or can be put into the document via methods like `Node.insertBefore()` or `Node.replaceChild()`\n\t *\n\t * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/createDocumentType MDN\n\t * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#Level-2-Core-DOM-createDocType DOM Level 2 Core\n\t * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocumenttype DOM Living Standard\n\t *\n\t * @see https://dom.spec.whatwg.org/#validate-and-extract DOM: Validate and extract\n\t * @see https://www.w3.org/TR/xml/#NT-NameStartChar XML Spec: Names\n\t * @see https://www.w3.org/TR/xml-names/#ns-qualnames XML Namespaces: Qualified names\n\t */\n\tcreateDocumentType: function(qualifiedName, publicId, systemId){\n\t\tvar node = new DocumentType();\n\t\tnode.name = qualifiedName;\n\t\tnode.nodeName = qualifiedName;\n\t\tnode.publicId = publicId || '';\n\t\tnode.systemId = systemId || '';\n\n\t\treturn node;\n\t}\n};\n\n\n/**\n * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-1950641247\n */\n\nfunction Node() {\n};\n\nNode.prototype = {\n\tfirstChild : null,\n\tlastChild : null,\n\tpreviousSibling : null,\n\tnextSibling : null,\n\tattributes : null,\n\tparentNode : null,\n\tchildNodes : null,\n\townerDocument : null,\n\tnodeValue : null,\n\tnamespaceURI : null,\n\tprefix : null,\n\tlocalName : null,\n\t// Modified in DOM Level 2:\n\tinsertBefore:function(newChild, refChild){//raises\n\t\treturn _insertBefore(this,newChild,refChild);\n\t},\n\treplaceChild:function(newChild, oldChild){//raises\n\t\t_insertBefore(this, newChild,oldChild, assertPreReplacementValidityInDocument);\n\t\tif(oldChild){\n\t\t\tthis.removeChild(oldChild);\n\t\t}\n\t},\n\tremoveChild:function(oldChild){\n\t\treturn _removeChild(this,oldChild);\n\t},\n\tappendChild:function(newChild){\n\t\treturn this.insertBefore(newChild,null);\n\t},\n\thasChildNodes:function(){\n\t\treturn this.firstChild != null;\n\t},\n\tcloneNode:function(deep){\n\t\treturn cloneNode(this.ownerDocument||this,this,deep);\n\t},\n\t// Modified in DOM Level 2:\n\tnormalize:function(){\n\t\tvar child = this.firstChild;\n\t\twhile(child){\n\t\t\tvar next = child.nextSibling;\n\t\t\tif(next && next.nodeType == TEXT_NODE && child.nodeType == TEXT_NODE){\n\t\t\t\tthis.removeChild(next);\n\t\t\t\tchild.appendData(next.data);\n\t\t\t}else{\n\t\t\t\tchild.normalize();\n\t\t\t\tchild = next;\n\t\t\t}\n\t\t}\n\t},\n \t// Introduced in DOM Level 2:\n\tisSupported:function(feature, version){\n\t\treturn this.ownerDocument.implementation.hasFeature(feature,version);\n\t},\n // Introduced in DOM Level 2:\n hasAttributes:function(){\n \treturn this.attributes.length>0;\n },\n\t/**\n\t * Look up the prefix associated to the given namespace URI, starting from this node.\n\t * **The default namespace declarations are ignored by this method.**\n\t * See Namespace Prefix Lookup for details on the algorithm used by this method.\n\t *\n\t * _Note: The implementation seems to be incomplete when compared to the algorithm described in the specs._\n\t *\n\t * @param {string | null} namespaceURI\n\t * @returns {string | null}\n\t * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#Node3-lookupNamespacePrefix\n\t * @see https://www.w3.org/TR/DOM-Level-3-Core/namespaces-algorithms.html#lookupNamespacePrefixAlgo\n\t * @see https://dom.spec.whatwg.org/#dom-node-lookupprefix\n\t * @see https://github.com/xmldom/xmldom/issues/322\n\t */\n lookupPrefix:function(namespaceURI){\n \tvar el = this;\n \twhile(el){\n \t\tvar map = el._nsMap;\n \t\t//console.dir(map)\n \t\tif(map){\n \t\t\tfor(var n in map){\n\t\t\t\t\t\tif (Object.prototype.hasOwnProperty.call(map, n) && map[n] === namespaceURI) {\n\t\t\t\t\t\t\treturn n;\n\t\t\t\t\t\t}\n \t\t\t}\n \t\t}\n \t\tel = el.nodeType == ATTRIBUTE_NODE?el.ownerDocument : el.parentNode;\n \t}\n \treturn null;\n },\n // Introduced in DOM Level 3:\n lookupNamespaceURI:function(prefix){\n \tvar el = this;\n \twhile(el){\n \t\tvar map = el._nsMap;\n \t\t//console.dir(map)\n \t\tif(map){\n \t\t\tif(Object.prototype.hasOwnProperty.call(map, prefix)){\n \t\t\t\treturn map[prefix] ;\n \t\t\t}\n \t\t}\n \t\tel = el.nodeType == ATTRIBUTE_NODE?el.ownerDocument : el.parentNode;\n \t}\n \treturn null;\n },\n // Introduced in DOM Level 3:\n isDefaultNamespace:function(namespaceURI){\n \tvar prefix = this.lookupPrefix(namespaceURI);\n \treturn prefix == null;\n }\n};\n\n\nfunction _xmlEncoder(c){\n\treturn c == '<' && '<' ||\n c == '>' && '>' ||\n c == '&' && '&' ||\n c == '\"' && '"' ||\n '&#'+c.charCodeAt()+';'\n}\n\n\ncopy(NodeType,Node);\ncopy(NodeType,Node.prototype);\n\n/**\n * @param callback return true for continue,false for break\n * @return boolean true: break visit;\n */\nfunction _visitNode(node,callback){\n\tif(callback(node)){\n\t\treturn true;\n\t}\n\tif(node = node.firstChild){\n\t\tdo{\n\t\t\tif(_visitNode(node,callback)){return true}\n }while(node=node.nextSibling)\n }\n}\n\n\n\nfunction Document(){\n\tthis.ownerDocument = this;\n}\n\nfunction _onAddAttribute(doc,el,newAttr){\n\tdoc && doc._inc++;\n\tvar ns = newAttr.namespaceURI ;\n\tif(ns === NAMESPACE.XMLNS){\n\t\t//update namespace\n\t\tel._nsMap[newAttr.prefix?newAttr.localName:''] = newAttr.value\n\t}\n}\n\nfunction _onRemoveAttribute(doc,el,newAttr,remove){\n\tdoc && doc._inc++;\n\tvar ns = newAttr.namespaceURI ;\n\tif(ns === NAMESPACE.XMLNS){\n\t\t//update namespace\n\t\tdelete el._nsMap[newAttr.prefix?newAttr.localName:'']\n\t}\n}\n\n/**\n * Updates `el.childNodes`, updating the indexed items and it's `length`.\n * Passing `newChild` means it will be appended.\n * Otherwise it's assumed that an item has been removed,\n * and `el.firstNode` and it's `.nextSibling` are used\n * to walk the current list of child nodes.\n *\n * @param {Document} doc\n * @param {Node} el\n * @param {Node} [newChild]\n * @private\n */\nfunction _onUpdateChild (doc, el, newChild) {\n\tif(doc && doc._inc){\n\t\tdoc._inc++;\n\t\t//update childNodes\n\t\tvar cs = el.childNodes;\n\t\tif (newChild) {\n\t\t\tcs[cs.length++] = newChild;\n\t\t} else {\n\t\t\tvar child = el.firstChild;\n\t\t\tvar i = 0;\n\t\t\twhile (child) {\n\t\t\t\tcs[i++] = child;\n\t\t\t\tchild = child.nextSibling;\n\t\t\t}\n\t\t\tcs.length = i;\n\t\t\tdelete cs[cs.length];\n\t\t}\n\t}\n}\n\n/**\n * Removes the connections between `parentNode` and `child`\n * and any existing `child.previousSibling` or `child.nextSibling`.\n *\n * @see https://github.com/xmldom/xmldom/issues/135\n * @see https://github.com/xmldom/xmldom/issues/145\n *\n * @param {Node} parentNode\n * @param {Node} child\n * @returns {Node} the child that was removed.\n * @private\n */\nfunction _removeChild (parentNode, child) {\n\tvar previous = child.previousSibling;\n\tvar next = child.nextSibling;\n\tif (previous) {\n\t\tprevious.nextSibling = next;\n\t} else {\n\t\tparentNode.firstChild = next;\n\t}\n\tif (next) {\n\t\tnext.previousSibling = previous;\n\t} else {\n\t\tparentNode.lastChild = previous;\n\t}\n\tchild.parentNode = null;\n\tchild.previousSibling = null;\n\tchild.nextSibling = null;\n\t_onUpdateChild(parentNode.ownerDocument, parentNode);\n\treturn child;\n}\n\n/**\n * Returns `true` if `node` can be a parent for insertion.\n * @param {Node} node\n * @returns {boolean}\n */\nfunction hasValidParentNodeType(node) {\n\treturn (\n\t\tnode &&\n\t\t(node.nodeType === Node.DOCUMENT_NODE || node.nodeType === Node.DOCUMENT_FRAGMENT_NODE || node.nodeType === Node.ELEMENT_NODE)\n\t);\n}\n\n/**\n * Returns `true` if `node` can be inserted according to it's `nodeType`.\n * @param {Node} node\n * @returns {boolean}\n */\nfunction hasInsertableNodeType(node) {\n\treturn (\n\t\tnode &&\n\t\t(isElementNode(node) ||\n\t\t\tisTextNode(node) ||\n\t\t\tisDocTypeNode(node) ||\n\t\t\tnode.nodeType === Node.DOCUMENT_FRAGMENT_NODE ||\n\t\t\tnode.nodeType === Node.COMMENT_NODE ||\n\t\t\tnode.nodeType === Node.PROCESSING_INSTRUCTION_NODE)\n\t);\n}\n\n/**\n * Returns true if `node` is a DOCTYPE node\n * @param {Node} node\n * @returns {boolean}\n */\nfunction isDocTypeNode(node) {\n\treturn node && node.nodeType === Node.DOCUMENT_TYPE_NODE;\n}\n\n/**\n * Returns true if the node is an element\n * @param {Node} node\n * @returns {boolean}\n */\nfunction isElementNode(node) {\n\treturn node && node.nodeType === Node.ELEMENT_NODE;\n}\n/**\n * Returns true if `node` is a text node\n * @param {Node} node\n * @returns {boolean}\n */\nfunction isTextNode(node) {\n\treturn node && node.nodeType === Node.TEXT_NODE;\n}\n\n/**\n * Check if en element node can be inserted before `child`, or at the end if child is falsy,\n * according to the presence and position of a doctype node on the same level.\n *\n * @param {Document} doc The document node\n * @param {Node} child the node that would become the nextSibling if the element would be inserted\n * @returns {boolean} `true` if an element can be inserted before child\n * @private\n * https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n */\nfunction isElementInsertionPossible(doc, child) {\n\tvar parentChildNodes = doc.childNodes || [];\n\tif (find(parentChildNodes, isElementNode) || isDocTypeNode(child)) {\n\t\treturn false;\n\t}\n\tvar docTypeNode = find(parentChildNodes, isDocTypeNode);\n\treturn !(child && docTypeNode && parentChildNodes.indexOf(docTypeNode) > parentChildNodes.indexOf(child));\n}\n\n/**\n * Check if en element node can be inserted before `child`, or at the end if child is falsy,\n * according to the presence and position of a doctype node on the same level.\n *\n * @param {Node} doc The document node\n * @param {Node} child the node that would become the nextSibling if the element would be inserted\n * @returns {boolean} `true` if an element can be inserted before child\n * @private\n * https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n */\nfunction isElementReplacementPossible(doc, child) {\n\tvar parentChildNodes = doc.childNodes || [];\n\n\tfunction hasElementChildThatIsNotChild(node) {\n\t\treturn isElementNode(node) && node !== child;\n\t}\n\n\tif (find(parentChildNodes, hasElementChildThatIsNotChild)) {\n\t\treturn false;\n\t}\n\tvar docTypeNode = find(parentChildNodes, isDocTypeNode);\n\treturn !(child && docTypeNode && parentChildNodes.indexOf(docTypeNode) > parentChildNodes.indexOf(child));\n}\n\n/**\n * @private\n * Steps 1-5 of the checks before inserting and before replacing a child are the same.\n *\n * @param {Node} parent the parent node to insert `node` into\n * @param {Node} node the node to insert\n * @param {Node=} child the node that should become the `nextSibling` of `node`\n * @returns {Node}\n * @throws DOMException for several node combinations that would create a DOM that is not well-formed.\n * @throws DOMException if `child` is provided but is not a child of `parent`.\n * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n * @see https://dom.spec.whatwg.org/#concept-node-replace\n */\nfunction assertPreInsertionValidity1to5(parent, node, child) {\n\t// 1. If `parent` is not a Document, DocumentFragment, or Element node, then throw a \"HierarchyRequestError\" DOMException.\n\tif (!hasValidParentNodeType(parent)) {\n\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Unexpected parent node type ' + parent.nodeType);\n\t}\n\t// 2. If `node` is a host-including inclusive ancestor of `parent`, then throw a \"HierarchyRequestError\" DOMException.\n\t// not implemented!\n\t// 3. If `child` is non-null and its parent is not `parent`, then throw a \"NotFoundError\" DOMException.\n\tif (child && child.parentNode !== parent) {\n\t\tthrow new DOMException(NOT_FOUND_ERR, 'child not in parent');\n\t}\n\tif (\n\t\t// 4. If `node` is not a DocumentFragment, DocumentType, Element, or CharacterData node, then throw a \"HierarchyRequestError\" DOMException.\n\t\t!hasInsertableNodeType(node) ||\n\t\t// 5. If either `node` is a Text node and `parent` is a document,\n\t\t// the sax parser currently adds top level text nodes, this will be fixed in 0.9.0\n\t\t// || (node.nodeType === Node.TEXT_NODE && parent.nodeType === Node.DOCUMENT_NODE)\n\t\t// or `node` is a doctype and `parent` is not a document, then throw a \"HierarchyRequestError\" DOMException.\n\t\t(isDocTypeNode(node) && parent.nodeType !== Node.DOCUMENT_NODE)\n\t) {\n\t\tthrow new DOMException(\n\t\t\tHIERARCHY_REQUEST_ERR,\n\t\t\t'Unexpected node type ' + node.nodeType + ' for parent node type ' + parent.nodeType\n\t\t);\n\t}\n}\n\n/**\n * @private\n * Step 6 of the checks before inserting and before replacing a child are different.\n *\n * @param {Document} parent the parent node to insert `node` into\n * @param {Node} node the node to insert\n * @param {Node | undefined} child the node that should become the `nextSibling` of `node`\n * @returns {Node}\n * @throws DOMException for several node combinations that would create a DOM that is not well-formed.\n * @throws DOMException if `child` is provided but is not a child of `parent`.\n * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n * @see https://dom.spec.whatwg.org/#concept-node-replace\n */\nfunction assertPreInsertionValidityInDocument(parent, node, child) {\n\tvar parentChildNodes = parent.childNodes || [];\n\tvar nodeChildNodes = node.childNodes || [];\n\n\t// DocumentFragment\n\tif (node.nodeType === Node.DOCUMENT_FRAGMENT_NODE) {\n\t\tvar nodeChildElements = nodeChildNodes.filter(isElementNode);\n\t\t// If node has more than one element child or has a Text node child.\n\t\tif (nodeChildElements.length > 1 || find(nodeChildNodes, isTextNode)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'More than one element or text in fragment');\n\t\t}\n\t\t// Otherwise, if `node` has one element child and either `parent` has an element child,\n\t\t// `child` is a doctype, or `child` is non-null and a doctype is following `child`.\n\t\tif (nodeChildElements.length === 1 && !isElementInsertionPossible(parent, child)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Element in fragment can not be inserted before doctype');\n\t\t}\n\t}\n\t// Element\n\tif (isElementNode(node)) {\n\t\t// `parent` has an element child, `child` is a doctype,\n\t\t// or `child` is non-null and a doctype is following `child`.\n\t\tif (!isElementInsertionPossible(parent, child)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Only one element can be added and only after doctype');\n\t\t}\n\t}\n\t// DocumentType\n\tif (isDocTypeNode(node)) {\n\t\t// `parent` has a doctype child,\n\t\tif (find(parentChildNodes, isDocTypeNode)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Only one doctype is allowed');\n\t\t}\n\t\tvar parentElementChild = find(parentChildNodes, isElementNode);\n\t\t// `child` is non-null and an element is preceding `child`,\n\t\tif (child && parentChildNodes.indexOf(parentElementChild) < parentChildNodes.indexOf(child)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can only be inserted before an element');\n\t\t}\n\t\t// or `child` is null and `parent` has an element child.\n\t\tif (!child && parentElementChild) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can not be appended since element is present');\n\t\t}\n\t}\n}\n\n/**\n * @private\n * Step 6 of the checks before inserting and before replacing a child are different.\n *\n * @param {Document} parent the parent node to insert `node` into\n * @param {Node} node the node to insert\n * @param {Node | undefined} child the node that should become the `nextSibling` of `node`\n * @returns {Node}\n * @throws DOMException for several node combinations that would create a DOM that is not well-formed.\n * @throws DOMException if `child` is provided but is not a child of `parent`.\n * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n * @see https://dom.spec.whatwg.org/#concept-node-replace\n */\nfunction assertPreReplacementValidityInDocument(parent, node, child) {\n\tvar parentChildNodes = parent.childNodes || [];\n\tvar nodeChildNodes = node.childNodes || [];\n\n\t// DocumentFragment\n\tif (node.nodeType === Node.DOCUMENT_FRAGMENT_NODE) {\n\t\tvar nodeChildElements = nodeChildNodes.filter(isElementNode);\n\t\t// If `node` has more than one element child or has a Text node child.\n\t\tif (nodeChildElements.length > 1 || find(nodeChildNodes, isTextNode)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'More than one element or text in fragment');\n\t\t}\n\t\t// Otherwise, if `node` has one element child and either `parent` has an element child that is not `child` or a doctype is following `child`.\n\t\tif (nodeChildElements.length === 1 && !isElementReplacementPossible(parent, child)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Element in fragment can not be inserted before doctype');\n\t\t}\n\t}\n\t// Element\n\tif (isElementNode(node)) {\n\t\t// `parent` has an element child that is not `child` or a doctype is following `child`.\n\t\tif (!isElementReplacementPossible(parent, child)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Only one element can be added and only after doctype');\n\t\t}\n\t}\n\t// DocumentType\n\tif (isDocTypeNode(node)) {\n\t\tfunction hasDoctypeChildThatIsNotChild(node) {\n\t\t\treturn isDocTypeNode(node) && node !== child;\n\t\t}\n\n\t\t// `parent` has a doctype child that is not `child`,\n\t\tif (find(parentChildNodes, hasDoctypeChildThatIsNotChild)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Only one doctype is allowed');\n\t\t}\n\t\tvar parentElementChild = find(parentChildNodes, isElementNode);\n\t\t// or an element is preceding `child`.\n\t\tif (child && parentChildNodes.indexOf(parentElementChild) < parentChildNodes.indexOf(child)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can only be inserted before an element');\n\t\t}\n\t}\n}\n\n/**\n * @private\n * @param {Node} parent the parent node to insert `node` into\n * @param {Node} node the node to insert\n * @param {Node=} child the node that should become the `nextSibling` of `node`\n * @returns {Node}\n * @throws DOMException for several node combinations that would create a DOM that is not well-formed.\n * @throws DOMException if `child` is provided but is not a child of `parent`.\n * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n */\nfunction _insertBefore(parent, node, child, _inDocumentAssertion) {\n\t// To ensure pre-insertion validity of a node into a parent before a child, run these steps:\n\tassertPreInsertionValidity1to5(parent, node, child);\n\n\t// If parent is a document, and any of the statements below, switched on the interface node implements,\n\t// are true, then throw a \"HierarchyRequestError\" DOMException.\n\tif (parent.nodeType === Node.DOCUMENT_NODE) {\n\t\t(_inDocumentAssertion || assertPreInsertionValidityInDocument)(parent, node, child);\n\t}\n\n\tvar cp = node.parentNode;\n\tif(cp){\n\t\tcp.removeChild(node);//remove and update\n\t}\n\tif(node.nodeType === DOCUMENT_FRAGMENT_NODE){\n\t\tvar newFirst = node.firstChild;\n\t\tif (newFirst == null) {\n\t\t\treturn node;\n\t\t}\n\t\tvar newLast = node.lastChild;\n\t}else{\n\t\tnewFirst = newLast = node;\n\t}\n\tvar pre = child ? child.previousSibling : parent.lastChild;\n\n\tnewFirst.previousSibling = pre;\n\tnewLast.nextSibling = child;\n\n\n\tif(pre){\n\t\tpre.nextSibling = newFirst;\n\t}else{\n\t\tparent.firstChild = newFirst;\n\t}\n\tif(child == null){\n\t\tparent.lastChild = newLast;\n\t}else{\n\t\tchild.previousSibling = newLast;\n\t}\n\tdo{\n\t\tnewFirst.parentNode = parent;\n\t}while(newFirst !== newLast && (newFirst= newFirst.nextSibling))\n\t_onUpdateChild(parent.ownerDocument||parent, parent);\n\t//console.log(parent.lastChild.nextSibling == null)\n\tif (node.nodeType == DOCUMENT_FRAGMENT_NODE) {\n\t\tnode.firstChild = node.lastChild = null;\n\t}\n\treturn node;\n}\n\n/**\n * Appends `newChild` to `parentNode`.\n * If `newChild` is already connected to a `parentNode` it is first removed from it.\n *\n * @see https://github.com/xmldom/xmldom/issues/135\n * @see https://github.com/xmldom/xmldom/issues/145\n * @param {Node} parentNode\n * @param {Node} newChild\n * @returns {Node}\n * @private\n */\nfunction _appendSingleChild (parentNode, newChild) {\n\tif (newChild.parentNode) {\n\t\tnewChild.parentNode.removeChild(newChild);\n\t}\n\tnewChild.parentNode = parentNode;\n\tnewChild.previousSibling = parentNode.lastChild;\n\tnewChild.nextSibling = null;\n\tif (newChild.previousSibling) {\n\t\tnewChild.previousSibling.nextSibling = newChild;\n\t} else {\n\t\tparentNode.firstChild = newChild;\n\t}\n\tparentNode.lastChild = newChild;\n\t_onUpdateChild(parentNode.ownerDocument, parentNode, newChild);\n\treturn newChild;\n}\n\nDocument.prototype = {\n\t//implementation : null,\n\tnodeName : '#document',\n\tnodeType : DOCUMENT_NODE,\n\t/**\n\t * The DocumentType node of the document.\n\t *\n\t * @readonly\n\t * @type DocumentType\n\t */\n\tdoctype : null,\n\tdocumentElement : null,\n\t_inc : 1,\n\n\tinsertBefore : function(newChild, refChild){//raises\n\t\tif(newChild.nodeType == DOCUMENT_FRAGMENT_NODE){\n\t\t\tvar child = newChild.firstChild;\n\t\t\twhile(child){\n\t\t\t\tvar next = child.nextSibling;\n\t\t\t\tthis.insertBefore(child,refChild);\n\t\t\t\tchild = next;\n\t\t\t}\n\t\t\treturn newChild;\n\t\t}\n\t\t_insertBefore(this, newChild, refChild);\n\t\tnewChild.ownerDocument = this;\n\t\tif (this.documentElement === null && newChild.nodeType === ELEMENT_NODE) {\n\t\t\tthis.documentElement = newChild;\n\t\t}\n\n\t\treturn newChild;\n\t},\n\tremoveChild : function(oldChild){\n\t\tif(this.documentElement == oldChild){\n\t\t\tthis.documentElement = null;\n\t\t}\n\t\treturn _removeChild(this,oldChild);\n\t},\n\treplaceChild: function (newChild, oldChild) {\n\t\t//raises\n\t\t_insertBefore(this, newChild, oldChild, assertPreReplacementValidityInDocument);\n\t\tnewChild.ownerDocument = this;\n\t\tif (oldChild) {\n\t\t\tthis.removeChild(oldChild);\n\t\t}\n\t\tif (isElementNode(newChild)) {\n\t\t\tthis.documentElement = newChild;\n\t\t}\n\t},\n\t// Introduced in DOM Level 2:\n\timportNode : function(importedNode,deep){\n\t\treturn importNode(this,importedNode,deep);\n\t},\n\t// Introduced in DOM Level 2:\n\tgetElementById :\tfunction(id){\n\t\tvar rtv = null;\n\t\t_visitNode(this.documentElement,function(node){\n\t\t\tif(node.nodeType == ELEMENT_NODE){\n\t\t\t\tif(node.getAttribute('id') == id){\n\t\t\t\t\trtv = node;\n\t\t\t\t\treturn true;\n\t\t\t\t}\n\t\t\t}\n\t\t})\n\t\treturn rtv;\n\t},\n\n\t/**\n\t * The `getElementsByClassName` method of `Document` interface returns an array-like object\n\t * of all child elements which have **all** of the given class name(s).\n\t *\n\t * Returns an empty list if `classeNames` is an empty string or only contains HTML white space characters.\n\t *\n\t *\n\t * Warning: This is a live LiveNodeList.\n\t * Changes in the DOM will reflect in the array as the changes occur.\n\t * If an element selected by this array no longer qualifies for the selector,\n\t * it will automatically be removed. Be aware of this for iteration purposes.\n\t *\n\t * @param {string} classNames is a string representing the class name(s) to match; multiple class names are separated by (ASCII-)whitespace\n\t *\n\t * @see https://developer.mozilla.org/en-US/docs/Web/API/Document/getElementsByClassName\n\t * @see https://dom.spec.whatwg.org/#concept-getelementsbyclassname\n\t */\n\tgetElementsByClassName: function(classNames) {\n\t\tvar classNamesSet = toOrderedSet(classNames)\n\t\treturn new LiveNodeList(this, function(base) {\n\t\t\tvar ls = [];\n\t\t\tif (classNamesSet.length > 0) {\n\t\t\t\t_visitNode(base.documentElement, function(node) {\n\t\t\t\t\tif(node !== base && node.nodeType === ELEMENT_NODE) {\n\t\t\t\t\t\tvar nodeClassNames = node.getAttribute('class')\n\t\t\t\t\t\t// can be null if the attribute does not exist\n\t\t\t\t\t\tif (nodeClassNames) {\n\t\t\t\t\t\t\t// before splitting and iterating just compare them for the most common case\n\t\t\t\t\t\t\tvar matches = classNames === nodeClassNames;\n\t\t\t\t\t\t\tif (!matches) {\n\t\t\t\t\t\t\t\tvar nodeClassNamesSet = toOrderedSet(nodeClassNames)\n\t\t\t\t\t\t\t\tmatches = classNamesSet.every(arrayIncludes(nodeClassNamesSet))\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\tif(matches) {\n\t\t\t\t\t\t\t\tls.push(node);\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t});\n\t\t\t}\n\t\t\treturn ls;\n\t\t});\n\t},\n\n\t//document factory method:\n\tcreateElement :\tfunction(tagName){\n\t\tvar node = new Element();\n\t\tnode.ownerDocument = this;\n\t\tnode.nodeName = tagName;\n\t\tnode.tagName = tagName;\n\t\tnode.localName = tagName;\n\t\tnode.childNodes = new NodeList();\n\t\tvar attrs\t= node.attributes = new NamedNodeMap();\n\t\tattrs._ownerElement = node;\n\t\treturn node;\n\t},\n\tcreateDocumentFragment :\tfunction(){\n\t\tvar node = new DocumentFragment();\n\t\tnode.ownerDocument = this;\n\t\tnode.childNodes = new NodeList();\n\t\treturn node;\n\t},\n\tcreateTextNode :\tfunction(data){\n\t\tvar node = new Text();\n\t\tnode.ownerDocument = this;\n\t\tnode.appendData(data)\n\t\treturn node;\n\t},\n\tcreateComment :\tfunction(data){\n\t\tvar node = new Comment();\n\t\tnode.ownerDocument = this;\n\t\tnode.appendData(data)\n\t\treturn node;\n\t},\n\tcreateCDATASection :\tfunction(data){\n\t\tvar node = new CDATASection();\n\t\tnode.ownerDocument = this;\n\t\tnode.appendData(data)\n\t\treturn node;\n\t},\n\tcreateProcessingInstruction :\tfunction(target,data){\n\t\tvar node = new ProcessingInstruction();\n\t\tnode.ownerDocument = this;\n\t\tnode.tagName = node.nodeName = node.target = target;\n\t\tnode.nodeValue = node.data = data;\n\t\treturn node;\n\t},\n\tcreateAttribute :\tfunction(name){\n\t\tvar node = new Attr();\n\t\tnode.ownerDocument\t= this;\n\t\tnode.name = name;\n\t\tnode.nodeName\t= name;\n\t\tnode.localName = name;\n\t\tnode.specified = true;\n\t\treturn node;\n\t},\n\tcreateEntityReference :\tfunction(name){\n\t\tvar node = new EntityReference();\n\t\tnode.ownerDocument\t= this;\n\t\tnode.nodeName\t= name;\n\t\treturn node;\n\t},\n\t// Introduced in DOM Level 2:\n\tcreateElementNS :\tfunction(namespaceURI,qualifiedName){\n\t\tvar node = new Element();\n\t\tvar pl = qualifiedName.split(':');\n\t\tvar attrs\t= node.attributes = new NamedNodeMap();\n\t\tnode.childNodes = new NodeList();\n\t\tnode.ownerDocument = this;\n\t\tnode.nodeName = qualifiedName;\n\t\tnode.tagName = qualifiedName;\n\t\tnode.namespaceURI = namespaceURI;\n\t\tif(pl.length == 2){\n\t\t\tnode.prefix = pl[0];\n\t\t\tnode.localName = pl[1];\n\t\t}else{\n\t\t\t//el.prefix = null;\n\t\t\tnode.localName = qualifiedName;\n\t\t}\n\t\tattrs._ownerElement = node;\n\t\treturn node;\n\t},\n\t// Introduced in DOM Level 2:\n\tcreateAttributeNS :\tfunction(namespaceURI,qualifiedName){\n\t\tvar node = new Attr();\n\t\tvar pl = qualifiedName.split(':');\n\t\tnode.ownerDocument = this;\n\t\tnode.nodeName = qualifiedName;\n\t\tnode.name = qualifiedName;\n\t\tnode.namespaceURI = namespaceURI;\n\t\tnode.specified = true;\n\t\tif(pl.length == 2){\n\t\t\tnode.prefix = pl[0];\n\t\t\tnode.localName = pl[1];\n\t\t}else{\n\t\t\t//el.prefix = null;\n\t\t\tnode.localName = qualifiedName;\n\t\t}\n\t\treturn node;\n\t}\n};\n_extends(Document,Node);\n\n\nfunction Element() {\n\tthis._nsMap = {};\n};\nElement.prototype = {\n\tnodeType : ELEMENT_NODE,\n\thasAttribute : function(name){\n\t\treturn this.getAttributeNode(name)!=null;\n\t},\n\tgetAttribute : function(name){\n\t\tvar attr = this.getAttributeNode(name);\n\t\treturn attr && attr.value || '';\n\t},\n\tgetAttributeNode : function(name){\n\t\treturn this.attributes.getNamedItem(name);\n\t},\n\tsetAttribute : function(name, value){\n\t\tvar attr = this.ownerDocument.createAttribute(name);\n\t\tattr.value = attr.nodeValue = \"\" + value;\n\t\tthis.setAttributeNode(attr)\n\t},\n\tremoveAttribute : function(name){\n\t\tvar attr = this.getAttributeNode(name)\n\t\tattr && this.removeAttributeNode(attr);\n\t},\n\n\t//four real opeartion method\n\tappendChild:function(newChild){\n\t\tif(newChild.nodeType === DOCUMENT_FRAGMENT_NODE){\n\t\t\treturn this.insertBefore(newChild,null);\n\t\t}else{\n\t\t\treturn _appendSingleChild(this,newChild);\n\t\t}\n\t},\n\tsetAttributeNode : function(newAttr){\n\t\treturn this.attributes.setNamedItem(newAttr);\n\t},\n\tsetAttributeNodeNS : function(newAttr){\n\t\treturn this.attributes.setNamedItemNS(newAttr);\n\t},\n\tremoveAttributeNode : function(oldAttr){\n\t\t//console.log(this == oldAttr.ownerElement)\n\t\treturn this.attributes.removeNamedItem(oldAttr.nodeName);\n\t},\n\t//get real attribute name,and remove it by removeAttributeNode\n\tremoveAttributeNS : function(namespaceURI, localName){\n\t\tvar old = this.getAttributeNodeNS(namespaceURI, localName);\n\t\told && this.removeAttributeNode(old);\n\t},\n\n\thasAttributeNS : function(namespaceURI, localName){\n\t\treturn this.getAttributeNodeNS(namespaceURI, localName)!=null;\n\t},\n\tgetAttributeNS : function(namespaceURI, localName){\n\t\tvar attr = this.getAttributeNodeNS(namespaceURI, localName);\n\t\treturn attr && attr.value || '';\n\t},\n\tsetAttributeNS : function(namespaceURI, qualifiedName, value){\n\t\tvar attr = this.ownerDocument.createAttributeNS(namespaceURI, qualifiedName);\n\t\tattr.value = attr.nodeValue = \"\" + value;\n\t\tthis.setAttributeNode(attr)\n\t},\n\tgetAttributeNodeNS : function(namespaceURI, localName){\n\t\treturn this.attributes.getNamedItemNS(namespaceURI, localName);\n\t},\n\n\tgetElementsByTagName : function(tagName){\n\t\treturn new LiveNodeList(this,function(base){\n\t\t\tvar ls = [];\n\t\t\t_visitNode(base,function(node){\n\t\t\t\tif(node !== base && node.nodeType == ELEMENT_NODE && (tagName === '*' || node.tagName == tagName)){\n\t\t\t\t\tls.push(node);\n\t\t\t\t}\n\t\t\t});\n\t\t\treturn ls;\n\t\t});\n\t},\n\tgetElementsByTagNameNS : function(namespaceURI, localName){\n\t\treturn new LiveNodeList(this,function(base){\n\t\t\tvar ls = [];\n\t\t\t_visitNode(base,function(node){\n\t\t\t\tif(node !== base && node.nodeType === ELEMENT_NODE && (namespaceURI === '*' || node.namespaceURI === namespaceURI) && (localName === '*' || node.localName == localName)){\n\t\t\t\t\tls.push(node);\n\t\t\t\t}\n\t\t\t});\n\t\t\treturn ls;\n\n\t\t});\n\t}\n};\nDocument.prototype.getElementsByTagName = Element.prototype.getElementsByTagName;\nDocument.prototype.getElementsByTagNameNS = Element.prototype.getElementsByTagNameNS;\n\n\n_extends(Element,Node);\nfunction Attr() {\n};\nAttr.prototype.nodeType = ATTRIBUTE_NODE;\n_extends(Attr,Node);\n\n\nfunction CharacterData() {\n};\nCharacterData.prototype = {\n\tdata : '',\n\tsubstringData : function(offset, count) {\n\t\treturn this.data.substring(offset, offset+count);\n\t},\n\tappendData: function(text) {\n\t\ttext = this.data+text;\n\t\tthis.nodeValue = this.data = text;\n\t\tthis.length = text.length;\n\t},\n\tinsertData: function(offset,text) {\n\t\tthis.replaceData(offset,0,text);\n\n\t},\n\tappendChild:function(newChild){\n\t\tthrow new Error(ExceptionMessage[HIERARCHY_REQUEST_ERR])\n\t},\n\tdeleteData: function(offset, count) {\n\t\tthis.replaceData(offset,count,\"\");\n\t},\n\treplaceData: function(offset, count, text) {\n\t\tvar start = this.data.substring(0,offset);\n\t\tvar end = this.data.substring(offset+count);\n\t\ttext = start + text + end;\n\t\tthis.nodeValue = this.data = text;\n\t\tthis.length = text.length;\n\t}\n}\n_extends(CharacterData,Node);\nfunction Text() {\n};\nText.prototype = {\n\tnodeName : \"#text\",\n\tnodeType : TEXT_NODE,\n\tsplitText : function(offset) {\n\t\tvar text = this.data;\n\t\tvar newText = text.substring(offset);\n\t\ttext = text.substring(0, offset);\n\t\tthis.data = this.nodeValue = text;\n\t\tthis.length = text.length;\n\t\tvar newNode = this.ownerDocument.createTextNode(newText);\n\t\tif(this.parentNode){\n\t\t\tthis.parentNode.insertBefore(newNode, this.nextSibling);\n\t\t}\n\t\treturn newNode;\n\t}\n}\n_extends(Text,CharacterData);\nfunction Comment() {\n};\nComment.prototype = {\n\tnodeName : \"#comment\",\n\tnodeType : COMMENT_NODE\n}\n_extends(Comment,CharacterData);\n\nfunction CDATASection() {\n};\nCDATASection.prototype = {\n\tnodeName : \"#cdata-section\",\n\tnodeType : CDATA_SECTION_NODE\n}\n_extends(CDATASection,CharacterData);\n\n\nfunction DocumentType() {\n};\nDocumentType.prototype.nodeType = DOCUMENT_TYPE_NODE;\n_extends(DocumentType,Node);\n\nfunction Notation() {\n};\nNotation.prototype.nodeType = NOTATION_NODE;\n_extends(Notation,Node);\n\nfunction Entity() {\n};\nEntity.prototype.nodeType = ENTITY_NODE;\n_extends(Entity,Node);\n\nfunction EntityReference() {\n};\nEntityReference.prototype.nodeType = ENTITY_REFERENCE_NODE;\n_extends(EntityReference,Node);\n\nfunction DocumentFragment() {\n};\nDocumentFragment.prototype.nodeName =\t\"#document-fragment\";\nDocumentFragment.prototype.nodeType =\tDOCUMENT_FRAGMENT_NODE;\n_extends(DocumentFragment,Node);\n\n\nfunction ProcessingInstruction() {\n}\nProcessingInstruction.prototype.nodeType = PROCESSING_INSTRUCTION_NODE;\n_extends(ProcessingInstruction,Node);\nfunction XMLSerializer(){}\nXMLSerializer.prototype.serializeToString = function(node,isHtml,nodeFilter){\n\treturn nodeSerializeToString.call(node,isHtml,nodeFilter);\n}\nNode.prototype.toString = nodeSerializeToString;\nfunction nodeSerializeToString(isHtml,nodeFilter){\n\tvar buf = [];\n\tvar refNode = this.nodeType == 9 && this.documentElement || this;\n\tvar prefix = refNode.prefix;\n\tvar uri = refNode.namespaceURI;\n\n\tif(uri && prefix == null){\n\t\t//console.log(prefix)\n\t\tvar prefix = refNode.lookupPrefix(uri);\n\t\tif(prefix == null){\n\t\t\t//isHTML = true;\n\t\t\tvar visibleNamespaces=[\n\t\t\t{namespace:uri,prefix:null}\n\t\t\t//{namespace:uri,prefix:''}\n\t\t\t]\n\t\t}\n\t}\n\tserializeToString(this,buf,isHtml,nodeFilter,visibleNamespaces);\n\t//console.log('###',this.nodeType,uri,prefix,buf.join(''))\n\treturn buf.join('');\n}\n\nfunction needNamespaceDefine(node, isHTML, visibleNamespaces) {\n\tvar prefix = node.prefix || '';\n\tvar uri = node.namespaceURI;\n\t// According to [Namespaces in XML 1.0](https://www.w3.org/TR/REC-xml-names/#ns-using) ,\n\t// and more specifically https://www.w3.org/TR/REC-xml-names/#nsc-NoPrefixUndecl :\n\t// > In a namespace declaration for a prefix [...], the attribute value MUST NOT be empty.\n\t// in a similar manner [Namespaces in XML 1.1](https://www.w3.org/TR/xml-names11/#ns-using)\n\t// and more specifically https://www.w3.org/TR/xml-names11/#nsc-NSDeclared :\n\t// > [...] Furthermore, the attribute value [...] must not be an empty string.\n\t// so serializing empty namespace value like xmlns:ds=\"\" would produce an invalid XML document.\n\tif (!uri) {\n\t\treturn false;\n\t}\n\tif (prefix === \"xml\" && uri === NAMESPACE.XML || uri === NAMESPACE.XMLNS) {\n\t\treturn false;\n\t}\n\n\tvar i = visibleNamespaces.length\n\twhile (i--) {\n\t\tvar ns = visibleNamespaces[i];\n\t\t// get namespace prefix\n\t\tif (ns.prefix === prefix) {\n\t\t\treturn ns.namespace !== uri;\n\t\t}\n\t}\n\treturn true;\n}\n/**\n * Well-formed constraint: No < in Attribute Values\n * > The replacement text of any entity referred to directly or indirectly\n * > in an attribute value must not contain a <.\n * @see https://www.w3.org/TR/xml11/#CleanAttrVals\n * @see https://www.w3.org/TR/xml11/#NT-AttValue\n *\n * Literal whitespace other than space that appear in attribute values\n * are serialized as their entity references, so they will be preserved.\n * (In contrast to whitespace literals in the input which are normalized to spaces)\n * @see https://www.w3.org/TR/xml11/#AVNormalize\n * @see https://w3c.github.io/DOM-Parsing/#serializing-an-element-s-attributes\n */\nfunction addSerializedAttribute(buf, qualifiedName, value) {\n\tbuf.push(' ', qualifiedName, '=\"', value.replace(/[<>&\"\\t\\n\\r]/g, _xmlEncoder), '\"')\n}\n\nfunction serializeToString(node,buf,isHTML,nodeFilter,visibleNamespaces){\n\tif (!visibleNamespaces) {\n\t\tvisibleNamespaces = [];\n\t}\n\n\tif(nodeFilter){\n\t\tnode = nodeFilter(node);\n\t\tif(node){\n\t\t\tif(typeof node == 'string'){\n\t\t\t\tbuf.push(node);\n\t\t\t\treturn;\n\t\t\t}\n\t\t}else{\n\t\t\treturn;\n\t\t}\n\t\t//buf.sort.apply(attrs, attributeSorter);\n\t}\n\n\tswitch(node.nodeType){\n\tcase ELEMENT_NODE:\n\t\tvar attrs = node.attributes;\n\t\tvar len = attrs.length;\n\t\tvar child = node.firstChild;\n\t\tvar nodeName = node.tagName;\n\n\t\tisHTML = NAMESPACE.isHTML(node.namespaceURI) || isHTML\n\n\t\tvar prefixedNodeName = nodeName\n\t\tif (!isHTML && !node.prefix && node.namespaceURI) {\n\t\t\tvar defaultNS\n\t\t\t// lookup current default ns from `xmlns` attribute\n\t\t\tfor (var ai = 0; ai < attrs.length; ai++) {\n\t\t\t\tif (attrs.item(ai).name === 'xmlns') {\n\t\t\t\t\tdefaultNS = attrs.item(ai).value\n\t\t\t\t\tbreak\n\t\t\t\t}\n\t\t\t}\n\t\t\tif (!defaultNS) {\n\t\t\t\t// lookup current default ns in visibleNamespaces\n\t\t\t\tfor (var nsi = visibleNamespaces.length - 1; nsi >= 0; nsi--) {\n\t\t\t\t\tvar namespace = visibleNamespaces[nsi]\n\t\t\t\t\tif (namespace.prefix === '' && namespace.namespace === node.namespaceURI) {\n\t\t\t\t\t\tdefaultNS = namespace.namespace\n\t\t\t\t\t\tbreak\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t\tif (defaultNS !== node.namespaceURI) {\n\t\t\t\tfor (var nsi = visibleNamespaces.length - 1; nsi >= 0; nsi--) {\n\t\t\t\t\tvar namespace = visibleNamespaces[nsi]\n\t\t\t\t\tif (namespace.namespace === node.namespaceURI) {\n\t\t\t\t\t\tif (namespace.prefix) {\n\t\t\t\t\t\t\tprefixedNodeName = namespace.prefix + ':' + nodeName\n\t\t\t\t\t\t}\n\t\t\t\t\t\tbreak\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tbuf.push('<', prefixedNodeName);\n\n\t\tfor(var i=0;i');\n\t\t\t//if is cdata child node\n\t\t\tif(isHTML && /^script$/i.test(nodeName)){\n\t\t\t\twhile(child){\n\t\t\t\t\tif(child.data){\n\t\t\t\t\t\tbuf.push(child.data);\n\t\t\t\t\t}else{\n\t\t\t\t\t\tserializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());\n\t\t\t\t\t}\n\t\t\t\t\tchild = child.nextSibling;\n\t\t\t\t}\n\t\t\t}else\n\t\t\t{\n\t\t\t\twhile(child){\n\t\t\t\t\tserializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());\n\t\t\t\t\tchild = child.nextSibling;\n\t\t\t\t}\n\t\t\t}\n\t\t\tbuf.push('');\n\t\t}else{\n\t\t\tbuf.push('/>');\n\t\t}\n\t\t// remove added visible namespaces\n\t\t//visibleNamespaces.length = startVisibleNamespaces;\n\t\treturn;\n\tcase DOCUMENT_NODE:\n\tcase DOCUMENT_FRAGMENT_NODE:\n\t\tvar child = node.firstChild;\n\t\twhile(child){\n\t\t\tserializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());\n\t\t\tchild = child.nextSibling;\n\t\t}\n\t\treturn;\n\tcase ATTRIBUTE_NODE:\n\t\treturn addSerializedAttribute(buf, node.name, node.value);\n\tcase TEXT_NODE:\n\t\t/**\n\t\t * The ampersand character (&) and the left angle bracket (<) must not appear in their literal form,\n\t\t * except when used as markup delimiters, or within a comment, a processing instruction, or a CDATA section.\n\t\t * If they are needed elsewhere, they must be escaped using either numeric character references or the strings\n\t\t * `&` and `<` respectively.\n\t\t * The right angle bracket (>) may be represented using the string \" > \", and must, for compatibility,\n\t\t * be escaped using either `>` or a character reference when it appears in the string `]]>` in content,\n\t\t * when that string is not marking the end of a CDATA section.\n\t\t *\n\t\t * In the content of elements, character data is any string of characters\n\t\t * which does not contain the start-delimiter of any markup\n\t\t * and does not include the CDATA-section-close delimiter, `]]>`.\n\t\t *\n\t\t * @see https://www.w3.org/TR/xml/#NT-CharData\n\t\t * @see https://w3c.github.io/DOM-Parsing/#xml-serializing-a-text-node\n\t\t */\n\t\treturn buf.push(node.data\n\t\t\t.replace(/[<&>]/g,_xmlEncoder)\n\t\t);\n\tcase CDATA_SECTION_NODE:\n\t\treturn buf.push( '');\n\tcase COMMENT_NODE:\n\t\treturn buf.push( \"\");\n\tcase DOCUMENT_TYPE_NODE:\n\t\tvar pubid = node.publicId;\n\t\tvar sysid = node.systemId;\n\t\tbuf.push('');\n\t\t}else if(sysid && sysid!='.'){\n\t\t\tbuf.push(' SYSTEM ', sysid, '>');\n\t\t}else{\n\t\t\tvar sub = node.internalSubset;\n\t\t\tif(sub){\n\t\t\t\tbuf.push(\" [\",sub,\"]\");\n\t\t\t}\n\t\t\tbuf.push(\">\");\n\t\t}\n\t\treturn;\n\tcase PROCESSING_INSTRUCTION_NODE:\n\t\treturn buf.push( \"\");\n\tcase ENTITY_REFERENCE_NODE:\n\t\treturn buf.push( '&',node.nodeName,';');\n\t//case ENTITY_NODE:\n\t//case NOTATION_NODE:\n\tdefault:\n\t\tbuf.push('??',node.nodeName);\n\t}\n}\nfunction importNode(doc,node,deep){\n\tvar node2;\n\tswitch (node.nodeType) {\n\tcase ELEMENT_NODE:\n\t\tnode2 = node.cloneNode(false);\n\t\tnode2.ownerDocument = doc;\n\t\t//var attrs = node2.attributes;\n\t\t//var len = attrs.length;\n\t\t//for(var i=0;i',\n\tlt: '<',\n\tquot: '\"',\n});\n\n/**\n * A map of all entities that are detected in an HTML document.\n * They contain all entries from `XML_ENTITIES`.\n *\n * @see XML_ENTITIES\n * @see DOMParser.parseFromString\n * @see DOMImplementation.prototype.createHTMLDocument\n * @see https://html.spec.whatwg.org/#named-character-references WHATWG HTML(5) Spec\n * @see https://html.spec.whatwg.org/entities.json JSON\n * @see https://www.w3.org/TR/xml-entity-names/ W3C XML Entity Names\n * @see https://www.w3.org/TR/html4/sgml/entities.html W3C HTML4/SGML\n * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Character_entity_references_in_HTML Wikipedia (HTML)\n * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Entities_representing_special_characters_in_XHTML Wikpedia (XHTML)\n */\nexports.HTML_ENTITIES = freeze({\n\tAacute: '\\u00C1',\n\taacute: '\\u00E1',\n\tAbreve: '\\u0102',\n\tabreve: '\\u0103',\n\tac: '\\u223E',\n\tacd: '\\u223F',\n\tacE: '\\u223E\\u0333',\n\tAcirc: '\\u00C2',\n\tacirc: '\\u00E2',\n\tacute: '\\u00B4',\n\tAcy: '\\u0410',\n\tacy: '\\u0430',\n\tAElig: '\\u00C6',\n\taelig: '\\u00E6',\n\taf: '\\u2061',\n\tAfr: '\\uD835\\uDD04',\n\tafr: '\\uD835\\uDD1E',\n\tAgrave: '\\u00C0',\n\tagrave: '\\u00E0',\n\talefsym: '\\u2135',\n\taleph: '\\u2135',\n\tAlpha: '\\u0391',\n\talpha: '\\u03B1',\n\tAmacr: '\\u0100',\n\tamacr: '\\u0101',\n\tamalg: '\\u2A3F',\n\tAMP: '\\u0026',\n\tamp: '\\u0026',\n\tAnd: '\\u2A53',\n\tand: '\\u2227',\n\tandand: '\\u2A55',\n\tandd: '\\u2A5C',\n\tandslope: '\\u2A58',\n\tandv: '\\u2A5A',\n\tang: '\\u2220',\n\tange: '\\u29A4',\n\tangle: '\\u2220',\n\tangmsd: '\\u2221',\n\tangmsdaa: '\\u29A8',\n\tangmsdab: '\\u29A9',\n\tangmsdac: '\\u29AA',\n\tangmsdad: '\\u29AB',\n\tangmsdae: '\\u29AC',\n\tangmsdaf: '\\u29AD',\n\tangmsdag: '\\u29AE',\n\tangmsdah: '\\u29AF',\n\tangrt: '\\u221F',\n\tangrtvb: '\\u22BE',\n\tangrtvbd: '\\u299D',\n\tangsph: '\\u2222',\n\tangst: '\\u00C5',\n\tangzarr: '\\u237C',\n\tAogon: '\\u0104',\n\taogon: '\\u0105',\n\tAopf: '\\uD835\\uDD38',\n\taopf: '\\uD835\\uDD52',\n\tap: '\\u2248',\n\tapacir: '\\u2A6F',\n\tapE: '\\u2A70',\n\tape: '\\u224A',\n\tapid: '\\u224B',\n\tapos: '\\u0027',\n\tApplyFunction: '\\u2061',\n\tapprox: '\\u2248',\n\tapproxeq: '\\u224A',\n\tAring: '\\u00C5',\n\taring: '\\u00E5',\n\tAscr: '\\uD835\\uDC9C',\n\tascr: '\\uD835\\uDCB6',\n\tAssign: '\\u2254',\n\tast: '\\u002A',\n\tasymp: '\\u2248',\n\tasympeq: '\\u224D',\n\tAtilde: '\\u00C3',\n\tatilde: '\\u00E3',\n\tAuml: '\\u00C4',\n\tauml: '\\u00E4',\n\tawconint: '\\u2233',\n\tawint: '\\u2A11',\n\tbackcong: '\\u224C',\n\tbackepsilon: '\\u03F6',\n\tbackprime: '\\u2035',\n\tbacksim: '\\u223D',\n\tbacksimeq: '\\u22CD',\n\tBackslash: '\\u2216',\n\tBarv: '\\u2AE7',\n\tbarvee: '\\u22BD',\n\tBarwed: '\\u2306',\n\tbarwed: '\\u2305',\n\tbarwedge: '\\u2305',\n\tbbrk: '\\u23B5',\n\tbbrktbrk: '\\u23B6',\n\tbcong: '\\u224C',\n\tBcy: '\\u0411',\n\tbcy: '\\u0431',\n\tbdquo: '\\u201E',\n\tbecaus: '\\u2235',\n\tBecause: '\\u2235',\n\tbecause: '\\u2235',\n\tbemptyv: '\\u29B0',\n\tbepsi: '\\u03F6',\n\tbernou: '\\u212C',\n\tBernoullis: '\\u212C',\n\tBeta: '\\u0392',\n\tbeta: '\\u03B2',\n\tbeth: '\\u2136',\n\tbetween: '\\u226C',\n\tBfr: '\\uD835\\uDD05',\n\tbfr: '\\uD835\\uDD1F',\n\tbigcap: '\\u22C2',\n\tbigcirc: '\\u25EF',\n\tbigcup: '\\u22C3',\n\tbigodot: '\\u2A00',\n\tbigoplus: '\\u2A01',\n\tbigotimes: '\\u2A02',\n\tbigsqcup: '\\u2A06',\n\tbigstar: '\\u2605',\n\tbigtriangledown: '\\u25BD',\n\tbigtriangleup: '\\u25B3',\n\tbiguplus: '\\u2A04',\n\tbigvee: '\\u22C1',\n\tbigwedge: '\\u22C0',\n\tbkarow: '\\u290D',\n\tblacklozenge: '\\u29EB',\n\tblacksquare: '\\u25AA',\n\tblacktriangle: '\\u25B4',\n\tblacktriangledown: '\\u25BE',\n\tblacktriangleleft: '\\u25C2',\n\tblacktriangleright: '\\u25B8',\n\tblank: '\\u2423',\n\tblk12: '\\u2592',\n\tblk14: '\\u2591',\n\tblk34: '\\u2593',\n\tblock: '\\u2588',\n\tbne: '\\u003D\\u20E5',\n\tbnequiv: '\\u2261\\u20E5',\n\tbNot: '\\u2AED',\n\tbnot: '\\u2310',\n\tBopf: '\\uD835\\uDD39',\n\tbopf: '\\uD835\\uDD53',\n\tbot: '\\u22A5',\n\tbottom: '\\u22A5',\n\tbowtie: '\\u22C8',\n\tboxbox: '\\u29C9',\n\tboxDL: '\\u2557',\n\tboxDl: '\\u2556',\n\tboxdL: '\\u2555',\n\tboxdl: '\\u2510',\n\tboxDR: '\\u2554',\n\tboxDr: '\\u2553',\n\tboxdR: '\\u2552',\n\tboxdr: '\\u250C',\n\tboxH: '\\u2550',\n\tboxh: '\\u2500',\n\tboxHD: '\\u2566',\n\tboxHd: '\\u2564',\n\tboxhD: '\\u2565',\n\tboxhd: '\\u252C',\n\tboxHU: '\\u2569',\n\tboxHu: '\\u2567',\n\tboxhU: '\\u2568',\n\tboxhu: '\\u2534',\n\tboxminus: '\\u229F',\n\tboxplus: '\\u229E',\n\tboxtimes: '\\u22A0',\n\tboxUL: '\\u255D',\n\tboxUl: '\\u255C',\n\tboxuL: '\\u255B',\n\tboxul: '\\u2518',\n\tboxUR: '\\u255A',\n\tboxUr: '\\u2559',\n\tboxuR: '\\u2558',\n\tboxur: '\\u2514',\n\tboxV: '\\u2551',\n\tboxv: '\\u2502',\n\tboxVH: '\\u256C',\n\tboxVh: '\\u256B',\n\tboxvH: '\\u256A',\n\tboxvh: '\\u253C',\n\tboxVL: '\\u2563',\n\tboxVl: '\\u2562',\n\tboxvL: '\\u2561',\n\tboxvl: '\\u2524',\n\tboxVR: '\\u2560',\n\tboxVr: '\\u255F',\n\tboxvR: '\\u255E',\n\tboxvr: '\\u251C',\n\tbprime: '\\u2035',\n\tBreve: '\\u02D8',\n\tbreve: '\\u02D8',\n\tbrvbar: '\\u00A6',\n\tBscr: '\\u212C',\n\tbscr: '\\uD835\\uDCB7',\n\tbsemi: '\\u204F',\n\tbsim: '\\u223D',\n\tbsime: '\\u22CD',\n\tbsol: '\\u005C',\n\tbsolb: '\\u29C5',\n\tbsolhsub: '\\u27C8',\n\tbull: '\\u2022',\n\tbullet: '\\u2022',\n\tbump: '\\u224E',\n\tbumpE: '\\u2AAE',\n\tbumpe: '\\u224F',\n\tBumpeq: '\\u224E',\n\tbumpeq: '\\u224F',\n\tCacute: '\\u0106',\n\tcacute: '\\u0107',\n\tCap: '\\u22D2',\n\tcap: '\\u2229',\n\tcapand: '\\u2A44',\n\tcapbrcup: '\\u2A49',\n\tcapcap: '\\u2A4B',\n\tcapcup: '\\u2A47',\n\tcapdot: '\\u2A40',\n\tCapitalDifferentialD: '\\u2145',\n\tcaps: '\\u2229\\uFE00',\n\tcaret: '\\u2041',\n\tcaron: '\\u02C7',\n\tCayleys: '\\u212D',\n\tccaps: '\\u2A4D',\n\tCcaron: '\\u010C',\n\tccaron: '\\u010D',\n\tCcedil: '\\u00C7',\n\tccedil: '\\u00E7',\n\tCcirc: '\\u0108',\n\tccirc: '\\u0109',\n\tCconint: '\\u2230',\n\tccups: '\\u2A4C',\n\tccupssm: '\\u2A50',\n\tCdot: '\\u010A',\n\tcdot: '\\u010B',\n\tcedil: '\\u00B8',\n\tCedilla: '\\u00B8',\n\tcemptyv: '\\u29B2',\n\tcent: '\\u00A2',\n\tCenterDot: '\\u00B7',\n\tcenterdot: '\\u00B7',\n\tCfr: '\\u212D',\n\tcfr: '\\uD835\\uDD20',\n\tCHcy: '\\u0427',\n\tchcy: '\\u0447',\n\tcheck: '\\u2713',\n\tcheckmark: '\\u2713',\n\tChi: '\\u03A7',\n\tchi: '\\u03C7',\n\tcir: '\\u25CB',\n\tcirc: '\\u02C6',\n\tcirceq: '\\u2257',\n\tcirclearrowleft: '\\u21BA',\n\tcirclearrowright: '\\u21BB',\n\tcircledast: '\\u229B',\n\tcircledcirc: '\\u229A',\n\tcircleddash: '\\u229D',\n\tCircleDot: '\\u2299',\n\tcircledR: '\\u00AE',\n\tcircledS: '\\u24C8',\n\tCircleMinus: '\\u2296',\n\tCirclePlus: '\\u2295',\n\tCircleTimes: '\\u2297',\n\tcirE: '\\u29C3',\n\tcire: '\\u2257',\n\tcirfnint: '\\u2A10',\n\tcirmid: '\\u2AEF',\n\tcirscir: '\\u29C2',\n\tClockwiseContourIntegral: '\\u2232',\n\tCloseCurlyDoubleQuote: '\\u201D',\n\tCloseCurlyQuote: '\\u2019',\n\tclubs: '\\u2663',\n\tclubsuit: '\\u2663',\n\tColon: '\\u2237',\n\tcolon: '\\u003A',\n\tColone: '\\u2A74',\n\tcolone: '\\u2254',\n\tcoloneq: '\\u2254',\n\tcomma: '\\u002C',\n\tcommat: '\\u0040',\n\tcomp: '\\u2201',\n\tcompfn: '\\u2218',\n\tcomplement: '\\u2201',\n\tcomplexes: '\\u2102',\n\tcong: '\\u2245',\n\tcongdot: '\\u2A6D',\n\tCongruent: '\\u2261',\n\tConint: '\\u222F',\n\tconint: '\\u222E',\n\tContourIntegral: '\\u222E',\n\tCopf: '\\u2102',\n\tcopf: '\\uD835\\uDD54',\n\tcoprod: '\\u2210',\n\tCoproduct: '\\u2210',\n\tCOPY: '\\u00A9',\n\tcopy: '\\u00A9',\n\tcopysr: '\\u2117',\n\tCounterClockwiseContourIntegral: '\\u2233',\n\tcrarr: '\\u21B5',\n\tCross: '\\u2A2F',\n\tcross: '\\u2717',\n\tCscr: '\\uD835\\uDC9E',\n\tcscr: '\\uD835\\uDCB8',\n\tcsub: '\\u2ACF',\n\tcsube: '\\u2AD1',\n\tcsup: '\\u2AD0',\n\tcsupe: '\\u2AD2',\n\tctdot: '\\u22EF',\n\tcudarrl: '\\u2938',\n\tcudarrr: '\\u2935',\n\tcuepr: '\\u22DE',\n\tcuesc: '\\u22DF',\n\tcularr: '\\u21B6',\n\tcularrp: '\\u293D',\n\tCup: '\\u22D3',\n\tcup: '\\u222A',\n\tcupbrcap: '\\u2A48',\n\tCupCap: '\\u224D',\n\tcupcap: '\\u2A46',\n\tcupcup: '\\u2A4A',\n\tcupdot: '\\u228D',\n\tcupor: '\\u2A45',\n\tcups: '\\u222A\\uFE00',\n\tcurarr: '\\u21B7',\n\tcurarrm: '\\u293C',\n\tcurlyeqprec: '\\u22DE',\n\tcurlyeqsucc: '\\u22DF',\n\tcurlyvee: '\\u22CE',\n\tcurlywedge: '\\u22CF',\n\tcurren: '\\u00A4',\n\tcurvearrowleft: '\\u21B6',\n\tcurvearrowright: '\\u21B7',\n\tcuvee: '\\u22CE',\n\tcuwed: '\\u22CF',\n\tcwconint: '\\u2232',\n\tcwint: '\\u2231',\n\tcylcty: '\\u232D',\n\tDagger: '\\u2021',\n\tdagger: '\\u2020',\n\tdaleth: '\\u2138',\n\tDarr: '\\u21A1',\n\tdArr: '\\u21D3',\n\tdarr: '\\u2193',\n\tdash: '\\u2010',\n\tDashv: '\\u2AE4',\n\tdashv: '\\u22A3',\n\tdbkarow: '\\u290F',\n\tdblac: '\\u02DD',\n\tDcaron: '\\u010E',\n\tdcaron: '\\u010F',\n\tDcy: '\\u0414',\n\tdcy: '\\u0434',\n\tDD: '\\u2145',\n\tdd: '\\u2146',\n\tddagger: '\\u2021',\n\tddarr: '\\u21CA',\n\tDDotrahd: '\\u2911',\n\tddotseq: '\\u2A77',\n\tdeg: '\\u00B0',\n\tDel: '\\u2207',\n\tDelta: '\\u0394',\n\tdelta: '\\u03B4',\n\tdemptyv: '\\u29B1',\n\tdfisht: '\\u297F',\n\tDfr: '\\uD835\\uDD07',\n\tdfr: '\\uD835\\uDD21',\n\tdHar: '\\u2965',\n\tdharl: '\\u21C3',\n\tdharr: '\\u21C2',\n\tDiacriticalAcute: '\\u00B4',\n\tDiacriticalDot: '\\u02D9',\n\tDiacriticalDoubleAcute: '\\u02DD',\n\tDiacriticalGrave: '\\u0060',\n\tDiacriticalTilde: '\\u02DC',\n\tdiam: '\\u22C4',\n\tDiamond: '\\u22C4',\n\tdiamond: '\\u22C4',\n\tdiamondsuit: '\\u2666',\n\tdiams: '\\u2666',\n\tdie: '\\u00A8',\n\tDifferentialD: '\\u2146',\n\tdigamma: '\\u03DD',\n\tdisin: '\\u22F2',\n\tdiv: '\\u00F7',\n\tdivide: '\\u00F7',\n\tdivideontimes: '\\u22C7',\n\tdivonx: '\\u22C7',\n\tDJcy: '\\u0402',\n\tdjcy: '\\u0452',\n\tdlcorn: '\\u231E',\n\tdlcrop: '\\u230D',\n\tdollar: '\\u0024',\n\tDopf: '\\uD835\\uDD3B',\n\tdopf: '\\uD835\\uDD55',\n\tDot: '\\u00A8',\n\tdot: '\\u02D9',\n\tDotDot: '\\u20DC',\n\tdoteq: '\\u2250',\n\tdoteqdot: '\\u2251',\n\tDotEqual: '\\u2250',\n\tdotminus: '\\u2238',\n\tdotplus: '\\u2214',\n\tdotsquare: '\\u22A1',\n\tdoublebarwedge: '\\u2306',\n\tDoubleContourIntegral: '\\u222F',\n\tDoubleDot: '\\u00A8',\n\tDoubleDownArrow: '\\u21D3',\n\tDoubleLeftArrow: '\\u21D0',\n\tDoubleLeftRightArrow: '\\u21D4',\n\tDoubleLeftTee: '\\u2AE4',\n\tDoubleLongLeftArrow: '\\u27F8',\n\tDoubleLongLeftRightArrow: '\\u27FA',\n\tDoubleLongRightArrow: '\\u27F9',\n\tDoubleRightArrow: '\\u21D2',\n\tDoubleRightTee: '\\u22A8',\n\tDoubleUpArrow: '\\u21D1',\n\tDoubleUpDownArrow: '\\u21D5',\n\tDoubleVerticalBar: '\\u2225',\n\tDownArrow: '\\u2193',\n\tDownarrow: '\\u21D3',\n\tdownarrow: '\\u2193',\n\tDownArrowBar: '\\u2913',\n\tDownArrowUpArrow: '\\u21F5',\n\tDownBreve: '\\u0311',\n\tdowndownarrows: '\\u21CA',\n\tdownharpoonleft: '\\u21C3',\n\tdownharpoonright: '\\u21C2',\n\tDownLeftRightVector: '\\u2950',\n\tDownLeftTeeVector: '\\u295E',\n\tDownLeftVector: '\\u21BD',\n\tDownLeftVectorBar: '\\u2956',\n\tDownRightTeeVector: '\\u295F',\n\tDownRightVector: '\\u21C1',\n\tDownRightVectorBar: '\\u2957',\n\tDownTee: '\\u22A4',\n\tDownTeeArrow: '\\u21A7',\n\tdrbkarow: '\\u2910',\n\tdrcorn: '\\u231F',\n\tdrcrop: '\\u230C',\n\tDscr: '\\uD835\\uDC9F',\n\tdscr: '\\uD835\\uDCB9',\n\tDScy: '\\u0405',\n\tdscy: '\\u0455',\n\tdsol: '\\u29F6',\n\tDstrok: '\\u0110',\n\tdstrok: '\\u0111',\n\tdtdot: '\\u22F1',\n\tdtri: '\\u25BF',\n\tdtrif: '\\u25BE',\n\tduarr: '\\u21F5',\n\tduhar: '\\u296F',\n\tdwangle: '\\u29A6',\n\tDZcy: '\\u040F',\n\tdzcy: '\\u045F',\n\tdzigrarr: '\\u27FF',\n\tEacute: '\\u00C9',\n\teacute: '\\u00E9',\n\teaster: '\\u2A6E',\n\tEcaron: '\\u011A',\n\tecaron: '\\u011B',\n\tecir: '\\u2256',\n\tEcirc: '\\u00CA',\n\tecirc: '\\u00EA',\n\tecolon: '\\u2255',\n\tEcy: '\\u042D',\n\tecy: '\\u044D',\n\teDDot: '\\u2A77',\n\tEdot: '\\u0116',\n\teDot: '\\u2251',\n\tedot: '\\u0117',\n\tee: '\\u2147',\n\tefDot: '\\u2252',\n\tEfr: '\\uD835\\uDD08',\n\tefr: '\\uD835\\uDD22',\n\teg: '\\u2A9A',\n\tEgrave: '\\u00C8',\n\tegrave: '\\u00E8',\n\tegs: '\\u2A96',\n\tegsdot: '\\u2A98',\n\tel: '\\u2A99',\n\tElement: '\\u2208',\n\telinters: '\\u23E7',\n\tell: '\\u2113',\n\tels: '\\u2A95',\n\telsdot: '\\u2A97',\n\tEmacr: '\\u0112',\n\temacr: '\\u0113',\n\tempty: '\\u2205',\n\temptyset: '\\u2205',\n\tEmptySmallSquare: '\\u25FB',\n\temptyv: '\\u2205',\n\tEmptyVerySmallSquare: '\\u25AB',\n\temsp: '\\u2003',\n\temsp13: '\\u2004',\n\temsp14: '\\u2005',\n\tENG: '\\u014A',\n\teng: '\\u014B',\n\tensp: '\\u2002',\n\tEogon: '\\u0118',\n\teogon: '\\u0119',\n\tEopf: '\\uD835\\uDD3C',\n\teopf: '\\uD835\\uDD56',\n\tepar: '\\u22D5',\n\teparsl: '\\u29E3',\n\teplus: '\\u2A71',\n\tepsi: '\\u03B5',\n\tEpsilon: '\\u0395',\n\tepsilon: '\\u03B5',\n\tepsiv: '\\u03F5',\n\teqcirc: '\\u2256',\n\teqcolon: '\\u2255',\n\teqsim: '\\u2242',\n\teqslantgtr: '\\u2A96',\n\teqslantless: '\\u2A95',\n\tEqual: '\\u2A75',\n\tequals: '\\u003D',\n\tEqualTilde: '\\u2242',\n\tequest: '\\u225F',\n\tEquilibrium: '\\u21CC',\n\tequiv: '\\u2261',\n\tequivDD: '\\u2A78',\n\teqvparsl: '\\u29E5',\n\terarr: '\\u2971',\n\terDot: '\\u2253',\n\tEscr: '\\u2130',\n\tescr: '\\u212F',\n\tesdot: '\\u2250',\n\tEsim: '\\u2A73',\n\tesim: '\\u2242',\n\tEta: '\\u0397',\n\teta: '\\u03B7',\n\tETH: '\\u00D0',\n\teth: '\\u00F0',\n\tEuml: '\\u00CB',\n\teuml: '\\u00EB',\n\teuro: '\\u20AC',\n\texcl: '\\u0021',\n\texist: '\\u2203',\n\tExists: '\\u2203',\n\texpectation: '\\u2130',\n\tExponentialE: '\\u2147',\n\texponentiale: '\\u2147',\n\tfallingdotseq: '\\u2252',\n\tFcy: '\\u0424',\n\tfcy: '\\u0444',\n\tfemale: '\\u2640',\n\tffilig: '\\uFB03',\n\tfflig: '\\uFB00',\n\tffllig: '\\uFB04',\n\tFfr: '\\uD835\\uDD09',\n\tffr: '\\uD835\\uDD23',\n\tfilig: '\\uFB01',\n\tFilledSmallSquare: '\\u25FC',\n\tFilledVerySmallSquare: '\\u25AA',\n\tfjlig: '\\u0066\\u006A',\n\tflat: '\\u266D',\n\tfllig: '\\uFB02',\n\tfltns: '\\u25B1',\n\tfnof: '\\u0192',\n\tFopf: '\\uD835\\uDD3D',\n\tfopf: '\\uD835\\uDD57',\n\tForAll: '\\u2200',\n\tforall: '\\u2200',\n\tfork: '\\u22D4',\n\tforkv: '\\u2AD9',\n\tFouriertrf: '\\u2131',\n\tfpartint: '\\u2A0D',\n\tfrac12: '\\u00BD',\n\tfrac13: '\\u2153',\n\tfrac14: '\\u00BC',\n\tfrac15: '\\u2155',\n\tfrac16: '\\u2159',\n\tfrac18: '\\u215B',\n\tfrac23: '\\u2154',\n\tfrac25: '\\u2156',\n\tfrac34: '\\u00BE',\n\tfrac35: '\\u2157',\n\tfrac38: '\\u215C',\n\tfrac45: '\\u2158',\n\tfrac56: '\\u215A',\n\tfrac58: '\\u215D',\n\tfrac78: '\\u215E',\n\tfrasl: '\\u2044',\n\tfrown: '\\u2322',\n\tFscr: '\\u2131',\n\tfscr: '\\uD835\\uDCBB',\n\tgacute: '\\u01F5',\n\tGamma: '\\u0393',\n\tgamma: '\\u03B3',\n\tGammad: '\\u03DC',\n\tgammad: '\\u03DD',\n\tgap: '\\u2A86',\n\tGbreve: '\\u011E',\n\tgbreve: '\\u011F',\n\tGcedil: '\\u0122',\n\tGcirc: '\\u011C',\n\tgcirc: '\\u011D',\n\tGcy: '\\u0413',\n\tgcy: '\\u0433',\n\tGdot: '\\u0120',\n\tgdot: '\\u0121',\n\tgE: '\\u2267',\n\tge: '\\u2265',\n\tgEl: '\\u2A8C',\n\tgel: '\\u22DB',\n\tgeq: '\\u2265',\n\tgeqq: '\\u2267',\n\tgeqslant: '\\u2A7E',\n\tges: '\\u2A7E',\n\tgescc: '\\u2AA9',\n\tgesdot: '\\u2A80',\n\tgesdoto: '\\u2A82',\n\tgesdotol: '\\u2A84',\n\tgesl: '\\u22DB\\uFE00',\n\tgesles: '\\u2A94',\n\tGfr: '\\uD835\\uDD0A',\n\tgfr: '\\uD835\\uDD24',\n\tGg: '\\u22D9',\n\tgg: '\\u226B',\n\tggg: '\\u22D9',\n\tgimel: '\\u2137',\n\tGJcy: '\\u0403',\n\tgjcy: '\\u0453',\n\tgl: '\\u2277',\n\tgla: '\\u2AA5',\n\tglE: '\\u2A92',\n\tglj: '\\u2AA4',\n\tgnap: '\\u2A8A',\n\tgnapprox: '\\u2A8A',\n\tgnE: '\\u2269',\n\tgne: '\\u2A88',\n\tgneq: '\\u2A88',\n\tgneqq: '\\u2269',\n\tgnsim: '\\u22E7',\n\tGopf: '\\uD835\\uDD3E',\n\tgopf: '\\uD835\\uDD58',\n\tgrave: '\\u0060',\n\tGreaterEqual: '\\u2265',\n\tGreaterEqualLess: '\\u22DB',\n\tGreaterFullEqual: '\\u2267',\n\tGreaterGreater: '\\u2AA2',\n\tGreaterLess: '\\u2277',\n\tGreaterSlantEqual: '\\u2A7E',\n\tGreaterTilde: '\\u2273',\n\tGscr: '\\uD835\\uDCA2',\n\tgscr: '\\u210A',\n\tgsim: '\\u2273',\n\tgsime: '\\u2A8E',\n\tgsiml: '\\u2A90',\n\tGt: '\\u226B',\n\tGT: '\\u003E',\n\tgt: '\\u003E',\n\tgtcc: '\\u2AA7',\n\tgtcir: '\\u2A7A',\n\tgtdot: '\\u22D7',\n\tgtlPar: '\\u2995',\n\tgtquest: '\\u2A7C',\n\tgtrapprox: '\\u2A86',\n\tgtrarr: '\\u2978',\n\tgtrdot: '\\u22D7',\n\tgtreqless: '\\u22DB',\n\tgtreqqless: '\\u2A8C',\n\tgtrless: '\\u2277',\n\tgtrsim: '\\u2273',\n\tgvertneqq: '\\u2269\\uFE00',\n\tgvnE: '\\u2269\\uFE00',\n\tHacek: '\\u02C7',\n\thairsp: '\\u200A',\n\thalf: '\\u00BD',\n\thamilt: '\\u210B',\n\tHARDcy: '\\u042A',\n\thardcy: '\\u044A',\n\thArr: '\\u21D4',\n\tharr: '\\u2194',\n\tharrcir: '\\u2948',\n\tharrw: '\\u21AD',\n\tHat: '\\u005E',\n\thbar: '\\u210F',\n\tHcirc: '\\u0124',\n\thcirc: '\\u0125',\n\thearts: '\\u2665',\n\theartsuit: '\\u2665',\n\thellip: '\\u2026',\n\thercon: '\\u22B9',\n\tHfr: '\\u210C',\n\thfr: '\\uD835\\uDD25',\n\tHilbertSpace: '\\u210B',\n\thksearow: '\\u2925',\n\thkswarow: '\\u2926',\n\thoarr: '\\u21FF',\n\thomtht: '\\u223B',\n\thookleftarrow: '\\u21A9',\n\thookrightarrow: '\\u21AA',\n\tHopf: '\\u210D',\n\thopf: '\\uD835\\uDD59',\n\thorbar: '\\u2015',\n\tHorizontalLine: '\\u2500',\n\tHscr: '\\u210B',\n\thscr: '\\uD835\\uDCBD',\n\thslash: '\\u210F',\n\tHstrok: '\\u0126',\n\thstrok: '\\u0127',\n\tHumpDownHump: '\\u224E',\n\tHumpEqual: '\\u224F',\n\thybull: '\\u2043',\n\thyphen: '\\u2010',\n\tIacute: '\\u00CD',\n\tiacute: '\\u00ED',\n\tic: '\\u2063',\n\tIcirc: '\\u00CE',\n\ticirc: '\\u00EE',\n\tIcy: '\\u0418',\n\ticy: '\\u0438',\n\tIdot: '\\u0130',\n\tIEcy: '\\u0415',\n\tiecy: '\\u0435',\n\tiexcl: '\\u00A1',\n\tiff: '\\u21D4',\n\tIfr: '\\u2111',\n\tifr: '\\uD835\\uDD26',\n\tIgrave: '\\u00CC',\n\tigrave: '\\u00EC',\n\tii: '\\u2148',\n\tiiiint: '\\u2A0C',\n\tiiint: '\\u222D',\n\tiinfin: '\\u29DC',\n\tiiota: '\\u2129',\n\tIJlig: '\\u0132',\n\tijlig: '\\u0133',\n\tIm: '\\u2111',\n\tImacr: '\\u012A',\n\timacr: '\\u012B',\n\timage: '\\u2111',\n\tImaginaryI: '\\u2148',\n\timagline: '\\u2110',\n\timagpart: '\\u2111',\n\timath: '\\u0131',\n\timof: '\\u22B7',\n\timped: '\\u01B5',\n\tImplies: '\\u21D2',\n\tin: '\\u2208',\n\tincare: '\\u2105',\n\tinfin: '\\u221E',\n\tinfintie: '\\u29DD',\n\tinodot: '\\u0131',\n\tInt: '\\u222C',\n\tint: '\\u222B',\n\tintcal: '\\u22BA',\n\tintegers: '\\u2124',\n\tIntegral: '\\u222B',\n\tintercal: '\\u22BA',\n\tIntersection: '\\u22C2',\n\tintlarhk: '\\u2A17',\n\tintprod: '\\u2A3C',\n\tInvisibleComma: '\\u2063',\n\tInvisibleTimes: '\\u2062',\n\tIOcy: '\\u0401',\n\tiocy: '\\u0451',\n\tIogon: '\\u012E',\n\tiogon: '\\u012F',\n\tIopf: '\\uD835\\uDD40',\n\tiopf: '\\uD835\\uDD5A',\n\tIota: '\\u0399',\n\tiota: '\\u03B9',\n\tiprod: '\\u2A3C',\n\tiquest: '\\u00BF',\n\tIscr: '\\u2110',\n\tiscr: '\\uD835\\uDCBE',\n\tisin: '\\u2208',\n\tisindot: '\\u22F5',\n\tisinE: '\\u22F9',\n\tisins: '\\u22F4',\n\tisinsv: '\\u22F3',\n\tisinv: '\\u2208',\n\tit: '\\u2062',\n\tItilde: '\\u0128',\n\titilde: '\\u0129',\n\tIukcy: '\\u0406',\n\tiukcy: '\\u0456',\n\tIuml: '\\u00CF',\n\tiuml: '\\u00EF',\n\tJcirc: '\\u0134',\n\tjcirc: '\\u0135',\n\tJcy: '\\u0419',\n\tjcy: '\\u0439',\n\tJfr: '\\uD835\\uDD0D',\n\tjfr: '\\uD835\\uDD27',\n\tjmath: '\\u0237',\n\tJopf: '\\uD835\\uDD41',\n\tjopf: '\\uD835\\uDD5B',\n\tJscr: '\\uD835\\uDCA5',\n\tjscr: '\\uD835\\uDCBF',\n\tJsercy: '\\u0408',\n\tjsercy: '\\u0458',\n\tJukcy: '\\u0404',\n\tjukcy: '\\u0454',\n\tKappa: '\\u039A',\n\tkappa: '\\u03BA',\n\tkappav: '\\u03F0',\n\tKcedil: '\\u0136',\n\tkcedil: '\\u0137',\n\tKcy: '\\u041A',\n\tkcy: '\\u043A',\n\tKfr: '\\uD835\\uDD0E',\n\tkfr: '\\uD835\\uDD28',\n\tkgreen: '\\u0138',\n\tKHcy: '\\u0425',\n\tkhcy: '\\u0445',\n\tKJcy: '\\u040C',\n\tkjcy: '\\u045C',\n\tKopf: '\\uD835\\uDD42',\n\tkopf: '\\uD835\\uDD5C',\n\tKscr: '\\uD835\\uDCA6',\n\tkscr: '\\uD835\\uDCC0',\n\tlAarr: '\\u21DA',\n\tLacute: '\\u0139',\n\tlacute: '\\u013A',\n\tlaemptyv: '\\u29B4',\n\tlagran: '\\u2112',\n\tLambda: '\\u039B',\n\tlambda: '\\u03BB',\n\tLang: '\\u27EA',\n\tlang: '\\u27E8',\n\tlangd: '\\u2991',\n\tlangle: '\\u27E8',\n\tlap: '\\u2A85',\n\tLaplacetrf: '\\u2112',\n\tlaquo: '\\u00AB',\n\tLarr: '\\u219E',\n\tlArr: '\\u21D0',\n\tlarr: '\\u2190',\n\tlarrb: '\\u21E4',\n\tlarrbfs: '\\u291F',\n\tlarrfs: '\\u291D',\n\tlarrhk: '\\u21A9',\n\tlarrlp: '\\u21AB',\n\tlarrpl: '\\u2939',\n\tlarrsim: '\\u2973',\n\tlarrtl: '\\u21A2',\n\tlat: '\\u2AAB',\n\tlAtail: '\\u291B',\n\tlatail: '\\u2919',\n\tlate: '\\u2AAD',\n\tlates: '\\u2AAD\\uFE00',\n\tlBarr: '\\u290E',\n\tlbarr: '\\u290C',\n\tlbbrk: '\\u2772',\n\tlbrace: '\\u007B',\n\tlbrack: '\\u005B',\n\tlbrke: '\\u298B',\n\tlbrksld: '\\u298F',\n\tlbrkslu: '\\u298D',\n\tLcaron: '\\u013D',\n\tlcaron: '\\u013E',\n\tLcedil: '\\u013B',\n\tlcedil: '\\u013C',\n\tlceil: '\\u2308',\n\tlcub: '\\u007B',\n\tLcy: '\\u041B',\n\tlcy: '\\u043B',\n\tldca: '\\u2936',\n\tldquo: '\\u201C',\n\tldquor: '\\u201E',\n\tldrdhar: '\\u2967',\n\tldrushar: '\\u294B',\n\tldsh: '\\u21B2',\n\tlE: '\\u2266',\n\tle: '\\u2264',\n\tLeftAngleBracket: '\\u27E8',\n\tLeftArrow: '\\u2190',\n\tLeftarrow: '\\u21D0',\n\tleftarrow: '\\u2190',\n\tLeftArrowBar: '\\u21E4',\n\tLeftArrowRightArrow: '\\u21C6',\n\tleftarrowtail: '\\u21A2',\n\tLeftCeiling: '\\u2308',\n\tLeftDoubleBracket: '\\u27E6',\n\tLeftDownTeeVector: '\\u2961',\n\tLeftDownVector: '\\u21C3',\n\tLeftDownVectorBar: '\\u2959',\n\tLeftFloor: '\\u230A',\n\tleftharpoondown: '\\u21BD',\n\tleftharpoonup: '\\u21BC',\n\tleftleftarrows: '\\u21C7',\n\tLeftRightArrow: '\\u2194',\n\tLeftrightarrow: '\\u21D4',\n\tleftrightarrow: '\\u2194',\n\tleftrightarrows: '\\u21C6',\n\tleftrightharpoons: '\\u21CB',\n\tleftrightsquigarrow: '\\u21AD',\n\tLeftRightVector: '\\u294E',\n\tLeftTee: '\\u22A3',\n\tLeftTeeArrow: '\\u21A4',\n\tLeftTeeVector: '\\u295A',\n\tleftthreetimes: '\\u22CB',\n\tLeftTriangle: '\\u22B2',\n\tLeftTriangleBar: '\\u29CF',\n\tLeftTriangleEqual: '\\u22B4',\n\tLeftUpDownVector: '\\u2951',\n\tLeftUpTeeVector: '\\u2960',\n\tLeftUpVector: '\\u21BF',\n\tLeftUpVectorBar: '\\u2958',\n\tLeftVector: '\\u21BC',\n\tLeftVectorBar: '\\u2952',\n\tlEg: '\\u2A8B',\n\tleg: '\\u22DA',\n\tleq: '\\u2264',\n\tleqq: '\\u2266',\n\tleqslant: '\\u2A7D',\n\tles: '\\u2A7D',\n\tlescc: '\\u2AA8',\n\tlesdot: '\\u2A7F',\n\tlesdoto: '\\u2A81',\n\tlesdotor: '\\u2A83',\n\tlesg: '\\u22DA\\uFE00',\n\tlesges: '\\u2A93',\n\tlessapprox: '\\u2A85',\n\tlessdot: '\\u22D6',\n\tlesseqgtr: '\\u22DA',\n\tlesseqqgtr: '\\u2A8B',\n\tLessEqualGreater: '\\u22DA',\n\tLessFullEqual: '\\u2266',\n\tLessGreater: '\\u2276',\n\tlessgtr: '\\u2276',\n\tLessLess: '\\u2AA1',\n\tlesssim: '\\u2272',\n\tLessSlantEqual: '\\u2A7D',\n\tLessTilde: '\\u2272',\n\tlfisht: '\\u297C',\n\tlfloor: '\\u230A',\n\tLfr: '\\uD835\\uDD0F',\n\tlfr: '\\uD835\\uDD29',\n\tlg: '\\u2276',\n\tlgE: '\\u2A91',\n\tlHar: '\\u2962',\n\tlhard: '\\u21BD',\n\tlharu: '\\u21BC',\n\tlharul: '\\u296A',\n\tlhblk: '\\u2584',\n\tLJcy: '\\u0409',\n\tljcy: '\\u0459',\n\tLl: '\\u22D8',\n\tll: '\\u226A',\n\tllarr: '\\u21C7',\n\tllcorner: '\\u231E',\n\tLleftarrow: '\\u21DA',\n\tllhard: '\\u296B',\n\tlltri: '\\u25FA',\n\tLmidot: '\\u013F',\n\tlmidot: '\\u0140',\n\tlmoust: '\\u23B0',\n\tlmoustache: '\\u23B0',\n\tlnap: '\\u2A89',\n\tlnapprox: '\\u2A89',\n\tlnE: '\\u2268',\n\tlne: '\\u2A87',\n\tlneq: '\\u2A87',\n\tlneqq: '\\u2268',\n\tlnsim: '\\u22E6',\n\tloang: '\\u27EC',\n\tloarr: '\\u21FD',\n\tlobrk: '\\u27E6',\n\tLongLeftArrow: '\\u27F5',\n\tLongleftarrow: '\\u27F8',\n\tlongleftarrow: '\\u27F5',\n\tLongLeftRightArrow: '\\u27F7',\n\tLongleftrightarrow: '\\u27FA',\n\tlongleftrightarrow: '\\u27F7',\n\tlongmapsto: '\\u27FC',\n\tLongRightArrow: '\\u27F6',\n\tLongrightarrow: '\\u27F9',\n\tlongrightarrow: '\\u27F6',\n\tlooparrowleft: '\\u21AB',\n\tlooparrowright: '\\u21AC',\n\tlopar: '\\u2985',\n\tLopf: '\\uD835\\uDD43',\n\tlopf: '\\uD835\\uDD5D',\n\tloplus: '\\u2A2D',\n\tlotimes: '\\u2A34',\n\tlowast: '\\u2217',\n\tlowbar: '\\u005F',\n\tLowerLeftArrow: '\\u2199',\n\tLowerRightArrow: '\\u2198',\n\tloz: '\\u25CA',\n\tlozenge: '\\u25CA',\n\tlozf: '\\u29EB',\n\tlpar: '\\u0028',\n\tlparlt: '\\u2993',\n\tlrarr: '\\u21C6',\n\tlrcorner: '\\u231F',\n\tlrhar: '\\u21CB',\n\tlrhard: '\\u296D',\n\tlrm: '\\u200E',\n\tlrtri: '\\u22BF',\n\tlsaquo: '\\u2039',\n\tLscr: '\\u2112',\n\tlscr: '\\uD835\\uDCC1',\n\tLsh: '\\u21B0',\n\tlsh: '\\u21B0',\n\tlsim: '\\u2272',\n\tlsime: '\\u2A8D',\n\tlsimg: '\\u2A8F',\n\tlsqb: '\\u005B',\n\tlsquo: '\\u2018',\n\tlsquor: '\\u201A',\n\tLstrok: '\\u0141',\n\tlstrok: '\\u0142',\n\tLt: '\\u226A',\n\tLT: '\\u003C',\n\tlt: '\\u003C',\n\tltcc: '\\u2AA6',\n\tltcir: '\\u2A79',\n\tltdot: '\\u22D6',\n\tlthree: '\\u22CB',\n\tltimes: '\\u22C9',\n\tltlarr: '\\u2976',\n\tltquest: '\\u2A7B',\n\tltri: '\\u25C3',\n\tltrie: '\\u22B4',\n\tltrif: '\\u25C2',\n\tltrPar: '\\u2996',\n\tlurdshar: '\\u294A',\n\tluruhar: '\\u2966',\n\tlvertneqq: '\\u2268\\uFE00',\n\tlvnE: '\\u2268\\uFE00',\n\tmacr: '\\u00AF',\n\tmale: '\\u2642',\n\tmalt: '\\u2720',\n\tmaltese: '\\u2720',\n\tMap: '\\u2905',\n\tmap: '\\u21A6',\n\tmapsto: '\\u21A6',\n\tmapstodown: '\\u21A7',\n\tmapstoleft: '\\u21A4',\n\tmapstoup: '\\u21A5',\n\tmarker: '\\u25AE',\n\tmcomma: '\\u2A29',\n\tMcy: '\\u041C',\n\tmcy: '\\u043C',\n\tmdash: '\\u2014',\n\tmDDot: '\\u223A',\n\tmeasuredangle: '\\u2221',\n\tMediumSpace: '\\u205F',\n\tMellintrf: '\\u2133',\n\tMfr: '\\uD835\\uDD10',\n\tmfr: '\\uD835\\uDD2A',\n\tmho: '\\u2127',\n\tmicro: '\\u00B5',\n\tmid: '\\u2223',\n\tmidast: '\\u002A',\n\tmidcir: '\\u2AF0',\n\tmiddot: '\\u00B7',\n\tminus: '\\u2212',\n\tminusb: '\\u229F',\n\tminusd: '\\u2238',\n\tminusdu: '\\u2A2A',\n\tMinusPlus: '\\u2213',\n\tmlcp: '\\u2ADB',\n\tmldr: '\\u2026',\n\tmnplus: '\\u2213',\n\tmodels: '\\u22A7',\n\tMopf: '\\uD835\\uDD44',\n\tmopf: '\\uD835\\uDD5E',\n\tmp: '\\u2213',\n\tMscr: '\\u2133',\n\tmscr: '\\uD835\\uDCC2',\n\tmstpos: '\\u223E',\n\tMu: '\\u039C',\n\tmu: '\\u03BC',\n\tmultimap: '\\u22B8',\n\tmumap: '\\u22B8',\n\tnabla: '\\u2207',\n\tNacute: '\\u0143',\n\tnacute: '\\u0144',\n\tnang: '\\u2220\\u20D2',\n\tnap: '\\u2249',\n\tnapE: '\\u2A70\\u0338',\n\tnapid: '\\u224B\\u0338',\n\tnapos: '\\u0149',\n\tnapprox: '\\u2249',\n\tnatur: '\\u266E',\n\tnatural: '\\u266E',\n\tnaturals: '\\u2115',\n\tnbsp: '\\u00A0',\n\tnbump: '\\u224E\\u0338',\n\tnbumpe: '\\u224F\\u0338',\n\tncap: '\\u2A43',\n\tNcaron: '\\u0147',\n\tncaron: '\\u0148',\n\tNcedil: '\\u0145',\n\tncedil: '\\u0146',\n\tncong: '\\u2247',\n\tncongdot: '\\u2A6D\\u0338',\n\tncup: '\\u2A42',\n\tNcy: '\\u041D',\n\tncy: '\\u043D',\n\tndash: '\\u2013',\n\tne: '\\u2260',\n\tnearhk: '\\u2924',\n\tneArr: '\\u21D7',\n\tnearr: '\\u2197',\n\tnearrow: '\\u2197',\n\tnedot: '\\u2250\\u0338',\n\tNegativeMediumSpace: '\\u200B',\n\tNegativeThickSpace: '\\u200B',\n\tNegativeThinSpace: '\\u200B',\n\tNegativeVeryThinSpace: '\\u200B',\n\tnequiv: '\\u2262',\n\tnesear: '\\u2928',\n\tnesim: '\\u2242\\u0338',\n\tNestedGreaterGreater: '\\u226B',\n\tNestedLessLess: '\\u226A',\n\tNewLine: '\\u000A',\n\tnexist: '\\u2204',\n\tnexists: '\\u2204',\n\tNfr: '\\uD835\\uDD11',\n\tnfr: '\\uD835\\uDD2B',\n\tngE: '\\u2267\\u0338',\n\tnge: '\\u2271',\n\tngeq: '\\u2271',\n\tngeqq: '\\u2267\\u0338',\n\tngeqslant: '\\u2A7E\\u0338',\n\tnges: '\\u2A7E\\u0338',\n\tnGg: '\\u22D9\\u0338',\n\tngsim: '\\u2275',\n\tnGt: '\\u226B\\u20D2',\n\tngt: '\\u226F',\n\tngtr: '\\u226F',\n\tnGtv: '\\u226B\\u0338',\n\tnhArr: '\\u21CE',\n\tnharr: '\\u21AE',\n\tnhpar: '\\u2AF2',\n\tni: '\\u220B',\n\tnis: '\\u22FC',\n\tnisd: '\\u22FA',\n\tniv: '\\u220B',\n\tNJcy: '\\u040A',\n\tnjcy: '\\u045A',\n\tnlArr: '\\u21CD',\n\tnlarr: '\\u219A',\n\tnldr: '\\u2025',\n\tnlE: '\\u2266\\u0338',\n\tnle: '\\u2270',\n\tnLeftarrow: '\\u21CD',\n\tnleftarrow: '\\u219A',\n\tnLeftrightarrow: '\\u21CE',\n\tnleftrightarrow: '\\u21AE',\n\tnleq: '\\u2270',\n\tnleqq: '\\u2266\\u0338',\n\tnleqslant: '\\u2A7D\\u0338',\n\tnles: '\\u2A7D\\u0338',\n\tnless: '\\u226E',\n\tnLl: '\\u22D8\\u0338',\n\tnlsim: '\\u2274',\n\tnLt: '\\u226A\\u20D2',\n\tnlt: '\\u226E',\n\tnltri: '\\u22EA',\n\tnltrie: '\\u22EC',\n\tnLtv: '\\u226A\\u0338',\n\tnmid: '\\u2224',\n\tNoBreak: '\\u2060',\n\tNonBreakingSpace: '\\u00A0',\n\tNopf: '\\u2115',\n\tnopf: '\\uD835\\uDD5F',\n\tNot: '\\u2AEC',\n\tnot: '\\u00AC',\n\tNotCongruent: '\\u2262',\n\tNotCupCap: '\\u226D',\n\tNotDoubleVerticalBar: '\\u2226',\n\tNotElement: '\\u2209',\n\tNotEqual: '\\u2260',\n\tNotEqualTilde: '\\u2242\\u0338',\n\tNotExists: '\\u2204',\n\tNotGreater: '\\u226F',\n\tNotGreaterEqual: '\\u2271',\n\tNotGreaterFullEqual: '\\u2267\\u0338',\n\tNotGreaterGreater: '\\u226B\\u0338',\n\tNotGreaterLess: '\\u2279',\n\tNotGreaterSlantEqual: '\\u2A7E\\u0338',\n\tNotGreaterTilde: '\\u2275',\n\tNotHumpDownHump: '\\u224E\\u0338',\n\tNotHumpEqual: '\\u224F\\u0338',\n\tnotin: '\\u2209',\n\tnotindot: '\\u22F5\\u0338',\n\tnotinE: '\\u22F9\\u0338',\n\tnotinva: '\\u2209',\n\tnotinvb: '\\u22F7',\n\tnotinvc: '\\u22F6',\n\tNotLeftTriangle: '\\u22EA',\n\tNotLeftTriangleBar: '\\u29CF\\u0338',\n\tNotLeftTriangleEqual: '\\u22EC',\n\tNotLess: '\\u226E',\n\tNotLessEqual: '\\u2270',\n\tNotLessGreater: '\\u2278',\n\tNotLessLess: '\\u226A\\u0338',\n\tNotLessSlantEqual: '\\u2A7D\\u0338',\n\tNotLessTilde: '\\u2274',\n\tNotNestedGreaterGreater: '\\u2AA2\\u0338',\n\tNotNestedLessLess: '\\u2AA1\\u0338',\n\tnotni: '\\u220C',\n\tnotniva: '\\u220C',\n\tnotnivb: '\\u22FE',\n\tnotnivc: '\\u22FD',\n\tNotPrecedes: '\\u2280',\n\tNotPrecedesEqual: '\\u2AAF\\u0338',\n\tNotPrecedesSlantEqual: '\\u22E0',\n\tNotReverseElement: '\\u220C',\n\tNotRightTriangle: '\\u22EB',\n\tNotRightTriangleBar: '\\u29D0\\u0338',\n\tNotRightTriangleEqual: '\\u22ED',\n\tNotSquareSubset: '\\u228F\\u0338',\n\tNotSquareSubsetEqual: '\\u22E2',\n\tNotSquareSuperset: '\\u2290\\u0338',\n\tNotSquareSupersetEqual: '\\u22E3',\n\tNotSubset: '\\u2282\\u20D2',\n\tNotSubsetEqual: '\\u2288',\n\tNotSucceeds: '\\u2281',\n\tNotSucceedsEqual: '\\u2AB0\\u0338',\n\tNotSucceedsSlantEqual: '\\u22E1',\n\tNotSucceedsTilde: '\\u227F\\u0338',\n\tNotSuperset: '\\u2283\\u20D2',\n\tNotSupersetEqual: '\\u2289',\n\tNotTilde: '\\u2241',\n\tNotTildeEqual: '\\u2244',\n\tNotTildeFullEqual: '\\u2247',\n\tNotTildeTilde: '\\u2249',\n\tNotVerticalBar: '\\u2224',\n\tnpar: '\\u2226',\n\tnparallel: '\\u2226',\n\tnparsl: '\\u2AFD\\u20E5',\n\tnpart: '\\u2202\\u0338',\n\tnpolint: '\\u2A14',\n\tnpr: '\\u2280',\n\tnprcue: '\\u22E0',\n\tnpre: '\\u2AAF\\u0338',\n\tnprec: '\\u2280',\n\tnpreceq: '\\u2AAF\\u0338',\n\tnrArr: '\\u21CF',\n\tnrarr: '\\u219B',\n\tnrarrc: '\\u2933\\u0338',\n\tnrarrw: '\\u219D\\u0338',\n\tnRightarrow: '\\u21CF',\n\tnrightarrow: '\\u219B',\n\tnrtri: '\\u22EB',\n\tnrtrie: '\\u22ED',\n\tnsc: '\\u2281',\n\tnsccue: '\\u22E1',\n\tnsce: '\\u2AB0\\u0338',\n\tNscr: '\\uD835\\uDCA9',\n\tnscr: '\\uD835\\uDCC3',\n\tnshortmid: '\\u2224',\n\tnshortparallel: '\\u2226',\n\tnsim: '\\u2241',\n\tnsime: '\\u2244',\n\tnsimeq: '\\u2244',\n\tnsmid: '\\u2224',\n\tnspar: '\\u2226',\n\tnsqsube: '\\u22E2',\n\tnsqsupe: '\\u22E3',\n\tnsub: '\\u2284',\n\tnsubE: '\\u2AC5\\u0338',\n\tnsube: '\\u2288',\n\tnsubset: '\\u2282\\u20D2',\n\tnsubseteq: '\\u2288',\n\tnsubseteqq: '\\u2AC5\\u0338',\n\tnsucc: '\\u2281',\n\tnsucceq: '\\u2AB0\\u0338',\n\tnsup: '\\u2285',\n\tnsupE: '\\u2AC6\\u0338',\n\tnsupe: '\\u2289',\n\tnsupset: '\\u2283\\u20D2',\n\tnsupseteq: '\\u2289',\n\tnsupseteqq: '\\u2AC6\\u0338',\n\tntgl: '\\u2279',\n\tNtilde: '\\u00D1',\n\tntilde: '\\u00F1',\n\tntlg: '\\u2278',\n\tntriangleleft: '\\u22EA',\n\tntrianglelefteq: '\\u22EC',\n\tntriangleright: '\\u22EB',\n\tntrianglerighteq: '\\u22ED',\n\tNu: '\\u039D',\n\tnu: '\\u03BD',\n\tnum: '\\u0023',\n\tnumero: '\\u2116',\n\tnumsp: '\\u2007',\n\tnvap: '\\u224D\\u20D2',\n\tnVDash: '\\u22AF',\n\tnVdash: '\\u22AE',\n\tnvDash: '\\u22AD',\n\tnvdash: '\\u22AC',\n\tnvge: '\\u2265\\u20D2',\n\tnvgt: '\\u003E\\u20D2',\n\tnvHarr: '\\u2904',\n\tnvinfin: '\\u29DE',\n\tnvlArr: '\\u2902',\n\tnvle: '\\u2264\\u20D2',\n\tnvlt: '\\u003C\\u20D2',\n\tnvltrie: '\\u22B4\\u20D2',\n\tnvrArr: '\\u2903',\n\tnvrtrie: '\\u22B5\\u20D2',\n\tnvsim: '\\u223C\\u20D2',\n\tnwarhk: '\\u2923',\n\tnwArr: '\\u21D6',\n\tnwarr: '\\u2196',\n\tnwarrow: '\\u2196',\n\tnwnear: '\\u2927',\n\tOacute: '\\u00D3',\n\toacute: '\\u00F3',\n\toast: '\\u229B',\n\tocir: '\\u229A',\n\tOcirc: '\\u00D4',\n\tocirc: '\\u00F4',\n\tOcy: '\\u041E',\n\tocy: '\\u043E',\n\todash: '\\u229D',\n\tOdblac: '\\u0150',\n\todblac: '\\u0151',\n\todiv: '\\u2A38',\n\todot: '\\u2299',\n\todsold: '\\u29BC',\n\tOElig: '\\u0152',\n\toelig: '\\u0153',\n\tofcir: '\\u29BF',\n\tOfr: '\\uD835\\uDD12',\n\tofr: '\\uD835\\uDD2C',\n\togon: '\\u02DB',\n\tOgrave: '\\u00D2',\n\tograve: '\\u00F2',\n\togt: '\\u29C1',\n\tohbar: '\\u29B5',\n\tohm: '\\u03A9',\n\toint: '\\u222E',\n\tolarr: '\\u21BA',\n\tolcir: '\\u29BE',\n\tolcross: '\\u29BB',\n\toline: '\\u203E',\n\tolt: '\\u29C0',\n\tOmacr: '\\u014C',\n\tomacr: '\\u014D',\n\tOmega: '\\u03A9',\n\tomega: '\\u03C9',\n\tOmicron: '\\u039F',\n\tomicron: '\\u03BF',\n\tomid: '\\u29B6',\n\tominus: '\\u2296',\n\tOopf: '\\uD835\\uDD46',\n\toopf: '\\uD835\\uDD60',\n\topar: '\\u29B7',\n\tOpenCurlyDoubleQuote: '\\u201C',\n\tOpenCurlyQuote: '\\u2018',\n\toperp: '\\u29B9',\n\toplus: '\\u2295',\n\tOr: '\\u2A54',\n\tor: '\\u2228',\n\torarr: '\\u21BB',\n\tord: '\\u2A5D',\n\torder: '\\u2134',\n\torderof: '\\u2134',\n\tordf: '\\u00AA',\n\tordm: '\\u00BA',\n\torigof: '\\u22B6',\n\toror: '\\u2A56',\n\torslope: '\\u2A57',\n\torv: '\\u2A5B',\n\toS: '\\u24C8',\n\tOscr: '\\uD835\\uDCAA',\n\toscr: '\\u2134',\n\tOslash: '\\u00D8',\n\toslash: '\\u00F8',\n\tosol: '\\u2298',\n\tOtilde: '\\u00D5',\n\totilde: '\\u00F5',\n\tOtimes: '\\u2A37',\n\totimes: '\\u2297',\n\totimesas: '\\u2A36',\n\tOuml: '\\u00D6',\n\touml: '\\u00F6',\n\tovbar: '\\u233D',\n\tOverBar: '\\u203E',\n\tOverBrace: '\\u23DE',\n\tOverBracket: '\\u23B4',\n\tOverParenthesis: '\\u23DC',\n\tpar: '\\u2225',\n\tpara: '\\u00B6',\n\tparallel: '\\u2225',\n\tparsim: '\\u2AF3',\n\tparsl: '\\u2AFD',\n\tpart: '\\u2202',\n\tPartialD: '\\u2202',\n\tPcy: '\\u041F',\n\tpcy: '\\u043F',\n\tpercnt: '\\u0025',\n\tperiod: '\\u002E',\n\tpermil: '\\u2030',\n\tperp: '\\u22A5',\n\tpertenk: '\\u2031',\n\tPfr: '\\uD835\\uDD13',\n\tpfr: '\\uD835\\uDD2D',\n\tPhi: '\\u03A6',\n\tphi: '\\u03C6',\n\tphiv: '\\u03D5',\n\tphmmat: '\\u2133',\n\tphone: '\\u260E',\n\tPi: '\\u03A0',\n\tpi: '\\u03C0',\n\tpitchfork: '\\u22D4',\n\tpiv: '\\u03D6',\n\tplanck: '\\u210F',\n\tplanckh: '\\u210E',\n\tplankv: '\\u210F',\n\tplus: '\\u002B',\n\tplusacir: '\\u2A23',\n\tplusb: '\\u229E',\n\tpluscir: '\\u2A22',\n\tplusdo: '\\u2214',\n\tplusdu: '\\u2A25',\n\tpluse: '\\u2A72',\n\tPlusMinus: '\\u00B1',\n\tplusmn: '\\u00B1',\n\tplussim: '\\u2A26',\n\tplustwo: '\\u2A27',\n\tpm: '\\u00B1',\n\tPoincareplane: '\\u210C',\n\tpointint: '\\u2A15',\n\tPopf: '\\u2119',\n\tpopf: '\\uD835\\uDD61',\n\tpound: '\\u00A3',\n\tPr: '\\u2ABB',\n\tpr: '\\u227A',\n\tprap: '\\u2AB7',\n\tprcue: '\\u227C',\n\tprE: '\\u2AB3',\n\tpre: '\\u2AAF',\n\tprec: '\\u227A',\n\tprecapprox: '\\u2AB7',\n\tpreccurlyeq: '\\u227C',\n\tPrecedes: '\\u227A',\n\tPrecedesEqual: '\\u2AAF',\n\tPrecedesSlantEqual: '\\u227C',\n\tPrecedesTilde: '\\u227E',\n\tpreceq: '\\u2AAF',\n\tprecnapprox: '\\u2AB9',\n\tprecneqq: '\\u2AB5',\n\tprecnsim: '\\u22E8',\n\tprecsim: '\\u227E',\n\tPrime: '\\u2033',\n\tprime: '\\u2032',\n\tprimes: '\\u2119',\n\tprnap: '\\u2AB9',\n\tprnE: '\\u2AB5',\n\tprnsim: '\\u22E8',\n\tprod: '\\u220F',\n\tProduct: '\\u220F',\n\tprofalar: '\\u232E',\n\tprofline: '\\u2312',\n\tprofsurf: '\\u2313',\n\tprop: '\\u221D',\n\tProportion: '\\u2237',\n\tProportional: '\\u221D',\n\tpropto: '\\u221D',\n\tprsim: '\\u227E',\n\tprurel: '\\u22B0',\n\tPscr: '\\uD835\\uDCAB',\n\tpscr: '\\uD835\\uDCC5',\n\tPsi: '\\u03A8',\n\tpsi: '\\u03C8',\n\tpuncsp: '\\u2008',\n\tQfr: '\\uD835\\uDD14',\n\tqfr: '\\uD835\\uDD2E',\n\tqint: '\\u2A0C',\n\tQopf: '\\u211A',\n\tqopf: '\\uD835\\uDD62',\n\tqprime: '\\u2057',\n\tQscr: '\\uD835\\uDCAC',\n\tqscr: '\\uD835\\uDCC6',\n\tquaternions: '\\u210D',\n\tquatint: '\\u2A16',\n\tquest: '\\u003F',\n\tquesteq: '\\u225F',\n\tQUOT: '\\u0022',\n\tquot: '\\u0022',\n\trAarr: '\\u21DB',\n\trace: '\\u223D\\u0331',\n\tRacute: '\\u0154',\n\tracute: '\\u0155',\n\tradic: '\\u221A',\n\traemptyv: '\\u29B3',\n\tRang: '\\u27EB',\n\trang: '\\u27E9',\n\trangd: '\\u2992',\n\trange: '\\u29A5',\n\trangle: '\\u27E9',\n\traquo: '\\u00BB',\n\tRarr: '\\u21A0',\n\trArr: '\\u21D2',\n\trarr: '\\u2192',\n\trarrap: '\\u2975',\n\trarrb: '\\u21E5',\n\trarrbfs: '\\u2920',\n\trarrc: '\\u2933',\n\trarrfs: '\\u291E',\n\trarrhk: '\\u21AA',\n\trarrlp: '\\u21AC',\n\trarrpl: '\\u2945',\n\trarrsim: '\\u2974',\n\tRarrtl: '\\u2916',\n\trarrtl: '\\u21A3',\n\trarrw: '\\u219D',\n\trAtail: '\\u291C',\n\tratail: '\\u291A',\n\tratio: '\\u2236',\n\trationals: '\\u211A',\n\tRBarr: '\\u2910',\n\trBarr: '\\u290F',\n\trbarr: '\\u290D',\n\trbbrk: '\\u2773',\n\trbrace: '\\u007D',\n\trbrack: '\\u005D',\n\trbrke: '\\u298C',\n\trbrksld: '\\u298E',\n\trbrkslu: '\\u2990',\n\tRcaron: '\\u0158',\n\trcaron: '\\u0159',\n\tRcedil: '\\u0156',\n\trcedil: '\\u0157',\n\trceil: '\\u2309',\n\trcub: '\\u007D',\n\tRcy: '\\u0420',\n\trcy: '\\u0440',\n\trdca: '\\u2937',\n\trdldhar: '\\u2969',\n\trdquo: '\\u201D',\n\trdquor: '\\u201D',\n\trdsh: '\\u21B3',\n\tRe: '\\u211C',\n\treal: '\\u211C',\n\trealine: '\\u211B',\n\trealpart: '\\u211C',\n\treals: '\\u211D',\n\trect: '\\u25AD',\n\tREG: '\\u00AE',\n\treg: '\\u00AE',\n\tReverseElement: '\\u220B',\n\tReverseEquilibrium: '\\u21CB',\n\tReverseUpEquilibrium: '\\u296F',\n\trfisht: '\\u297D',\n\trfloor: '\\u230B',\n\tRfr: '\\u211C',\n\trfr: '\\uD835\\uDD2F',\n\trHar: '\\u2964',\n\trhard: '\\u21C1',\n\trharu: '\\u21C0',\n\trharul: '\\u296C',\n\tRho: '\\u03A1',\n\trho: '\\u03C1',\n\trhov: '\\u03F1',\n\tRightAngleBracket: '\\u27E9',\n\tRightArrow: '\\u2192',\n\tRightarrow: '\\u21D2',\n\trightarrow: '\\u2192',\n\tRightArrowBar: '\\u21E5',\n\tRightArrowLeftArrow: '\\u21C4',\n\trightarrowtail: '\\u21A3',\n\tRightCeiling: '\\u2309',\n\tRightDoubleBracket: '\\u27E7',\n\tRightDownTeeVector: '\\u295D',\n\tRightDownVector: '\\u21C2',\n\tRightDownVectorBar: '\\u2955',\n\tRightFloor: '\\u230B',\n\trightharpoondown: '\\u21C1',\n\trightharpoonup: '\\u21C0',\n\trightleftarrows: '\\u21C4',\n\trightleftharpoons: '\\u21CC',\n\trightrightarrows: '\\u21C9',\n\trightsquigarrow: '\\u219D',\n\tRightTee: '\\u22A2',\n\tRightTeeArrow: '\\u21A6',\n\tRightTeeVector: '\\u295B',\n\trightthreetimes: '\\u22CC',\n\tRightTriangle: '\\u22B3',\n\tRightTriangleBar: '\\u29D0',\n\tRightTriangleEqual: '\\u22B5',\n\tRightUpDownVector: '\\u294F',\n\tRightUpTeeVector: '\\u295C',\n\tRightUpVector: '\\u21BE',\n\tRightUpVectorBar: '\\u2954',\n\tRightVector: '\\u21C0',\n\tRightVectorBar: '\\u2953',\n\tring: '\\u02DA',\n\trisingdotseq: '\\u2253',\n\trlarr: '\\u21C4',\n\trlhar: '\\u21CC',\n\trlm: '\\u200F',\n\trmoust: '\\u23B1',\n\trmoustache: '\\u23B1',\n\trnmid: '\\u2AEE',\n\troang: '\\u27ED',\n\troarr: '\\u21FE',\n\trobrk: '\\u27E7',\n\tropar: '\\u2986',\n\tRopf: '\\u211D',\n\tropf: '\\uD835\\uDD63',\n\troplus: '\\u2A2E',\n\trotimes: '\\u2A35',\n\tRoundImplies: '\\u2970',\n\trpar: '\\u0029',\n\trpargt: '\\u2994',\n\trppolint: '\\u2A12',\n\trrarr: '\\u21C9',\n\tRrightarrow: '\\u21DB',\n\trsaquo: '\\u203A',\n\tRscr: '\\u211B',\n\trscr: '\\uD835\\uDCC7',\n\tRsh: '\\u21B1',\n\trsh: '\\u21B1',\n\trsqb: '\\u005D',\n\trsquo: '\\u2019',\n\trsquor: '\\u2019',\n\trthree: '\\u22CC',\n\trtimes: '\\u22CA',\n\trtri: '\\u25B9',\n\trtrie: '\\u22B5',\n\trtrif: '\\u25B8',\n\trtriltri: '\\u29CE',\n\tRuleDelayed: '\\u29F4',\n\truluhar: '\\u2968',\n\trx: '\\u211E',\n\tSacute: '\\u015A',\n\tsacute: '\\u015B',\n\tsbquo: '\\u201A',\n\tSc: '\\u2ABC',\n\tsc: '\\u227B',\n\tscap: '\\u2AB8',\n\tScaron: '\\u0160',\n\tscaron: '\\u0161',\n\tsccue: '\\u227D',\n\tscE: '\\u2AB4',\n\tsce: '\\u2AB0',\n\tScedil: '\\u015E',\n\tscedil: '\\u015F',\n\tScirc: '\\u015C',\n\tscirc: '\\u015D',\n\tscnap: '\\u2ABA',\n\tscnE: '\\u2AB6',\n\tscnsim: '\\u22E9',\n\tscpolint: '\\u2A13',\n\tscsim: '\\u227F',\n\tScy: '\\u0421',\n\tscy: '\\u0441',\n\tsdot: '\\u22C5',\n\tsdotb: '\\u22A1',\n\tsdote: '\\u2A66',\n\tsearhk: '\\u2925',\n\tseArr: '\\u21D8',\n\tsearr: '\\u2198',\n\tsearrow: '\\u2198',\n\tsect: '\\u00A7',\n\tsemi: '\\u003B',\n\tseswar: '\\u2929',\n\tsetminus: '\\u2216',\n\tsetmn: '\\u2216',\n\tsext: '\\u2736',\n\tSfr: '\\uD835\\uDD16',\n\tsfr: '\\uD835\\uDD30',\n\tsfrown: '\\u2322',\n\tsharp: '\\u266F',\n\tSHCHcy: '\\u0429',\n\tshchcy: '\\u0449',\n\tSHcy: '\\u0428',\n\tshcy: '\\u0448',\n\tShortDownArrow: '\\u2193',\n\tShortLeftArrow: '\\u2190',\n\tshortmid: '\\u2223',\n\tshortparallel: '\\u2225',\n\tShortRightArrow: '\\u2192',\n\tShortUpArrow: '\\u2191',\n\tshy: '\\u00AD',\n\tSigma: '\\u03A3',\n\tsigma: '\\u03C3',\n\tsigmaf: '\\u03C2',\n\tsigmav: '\\u03C2',\n\tsim: '\\u223C',\n\tsimdot: '\\u2A6A',\n\tsime: '\\u2243',\n\tsimeq: '\\u2243',\n\tsimg: '\\u2A9E',\n\tsimgE: '\\u2AA0',\n\tsiml: '\\u2A9D',\n\tsimlE: '\\u2A9F',\n\tsimne: '\\u2246',\n\tsimplus: '\\u2A24',\n\tsimrarr: '\\u2972',\n\tslarr: '\\u2190',\n\tSmallCircle: '\\u2218',\n\tsmallsetminus: '\\u2216',\n\tsmashp: '\\u2A33',\n\tsmeparsl: '\\u29E4',\n\tsmid: '\\u2223',\n\tsmile: '\\u2323',\n\tsmt: '\\u2AAA',\n\tsmte: '\\u2AAC',\n\tsmtes: '\\u2AAC\\uFE00',\n\tSOFTcy: '\\u042C',\n\tsoftcy: '\\u044C',\n\tsol: '\\u002F',\n\tsolb: '\\u29C4',\n\tsolbar: '\\u233F',\n\tSopf: '\\uD835\\uDD4A',\n\tsopf: '\\uD835\\uDD64',\n\tspades: '\\u2660',\n\tspadesuit: '\\u2660',\n\tspar: '\\u2225',\n\tsqcap: '\\u2293',\n\tsqcaps: '\\u2293\\uFE00',\n\tsqcup: '\\u2294',\n\tsqcups: '\\u2294\\uFE00',\n\tSqrt: '\\u221A',\n\tsqsub: '\\u228F',\n\tsqsube: '\\u2291',\n\tsqsubset: '\\u228F',\n\tsqsubseteq: '\\u2291',\n\tsqsup: '\\u2290',\n\tsqsupe: '\\u2292',\n\tsqsupset: '\\u2290',\n\tsqsupseteq: '\\u2292',\n\tsqu: '\\u25A1',\n\tSquare: '\\u25A1',\n\tsquare: '\\u25A1',\n\tSquareIntersection: '\\u2293',\n\tSquareSubset: '\\u228F',\n\tSquareSubsetEqual: '\\u2291',\n\tSquareSuperset: '\\u2290',\n\tSquareSupersetEqual: '\\u2292',\n\tSquareUnion: '\\u2294',\n\tsquarf: '\\u25AA',\n\tsquf: '\\u25AA',\n\tsrarr: '\\u2192',\n\tSscr: '\\uD835\\uDCAE',\n\tsscr: '\\uD835\\uDCC8',\n\tssetmn: '\\u2216',\n\tssmile: '\\u2323',\n\tsstarf: '\\u22C6',\n\tStar: '\\u22C6',\n\tstar: '\\u2606',\n\tstarf: '\\u2605',\n\tstraightepsilon: '\\u03F5',\n\tstraightphi: '\\u03D5',\n\tstrns: '\\u00AF',\n\tSub: '\\u22D0',\n\tsub: '\\u2282',\n\tsubdot: '\\u2ABD',\n\tsubE: '\\u2AC5',\n\tsube: '\\u2286',\n\tsubedot: '\\u2AC3',\n\tsubmult: '\\u2AC1',\n\tsubnE: '\\u2ACB',\n\tsubne: '\\u228A',\n\tsubplus: '\\u2ABF',\n\tsubrarr: '\\u2979',\n\tSubset: '\\u22D0',\n\tsubset: '\\u2282',\n\tsubseteq: '\\u2286',\n\tsubseteqq: '\\u2AC5',\n\tSubsetEqual: '\\u2286',\n\tsubsetneq: '\\u228A',\n\tsubsetneqq: '\\u2ACB',\n\tsubsim: '\\u2AC7',\n\tsubsub: '\\u2AD5',\n\tsubsup: '\\u2AD3',\n\tsucc: '\\u227B',\n\tsuccapprox: '\\u2AB8',\n\tsucccurlyeq: '\\u227D',\n\tSucceeds: '\\u227B',\n\tSucceedsEqual: '\\u2AB0',\n\tSucceedsSlantEqual: '\\u227D',\n\tSucceedsTilde: '\\u227F',\n\tsucceq: '\\u2AB0',\n\tsuccnapprox: '\\u2ABA',\n\tsuccneqq: '\\u2AB6',\n\tsuccnsim: '\\u22E9',\n\tsuccsim: '\\u227F',\n\tSuchThat: '\\u220B',\n\tSum: '\\u2211',\n\tsum: '\\u2211',\n\tsung: '\\u266A',\n\tSup: '\\u22D1',\n\tsup: '\\u2283',\n\tsup1: '\\u00B9',\n\tsup2: '\\u00B2',\n\tsup3: '\\u00B3',\n\tsupdot: '\\u2ABE',\n\tsupdsub: '\\u2AD8',\n\tsupE: '\\u2AC6',\n\tsupe: '\\u2287',\n\tsupedot: '\\u2AC4',\n\tSuperset: '\\u2283',\n\tSupersetEqual: '\\u2287',\n\tsuphsol: '\\u27C9',\n\tsuphsub: '\\u2AD7',\n\tsuplarr: '\\u297B',\n\tsupmult: '\\u2AC2',\n\tsupnE: '\\u2ACC',\n\tsupne: '\\u228B',\n\tsupplus: '\\u2AC0',\n\tSupset: '\\u22D1',\n\tsupset: '\\u2283',\n\tsupseteq: '\\u2287',\n\tsupseteqq: '\\u2AC6',\n\tsupsetneq: '\\u228B',\n\tsupsetneqq: '\\u2ACC',\n\tsupsim: '\\u2AC8',\n\tsupsub: '\\u2AD4',\n\tsupsup: '\\u2AD6',\n\tswarhk: '\\u2926',\n\tswArr: '\\u21D9',\n\tswarr: '\\u2199',\n\tswarrow: '\\u2199',\n\tswnwar: '\\u292A',\n\tszlig: '\\u00DF',\n\tTab: '\\u0009',\n\ttarget: '\\u2316',\n\tTau: '\\u03A4',\n\ttau: '\\u03C4',\n\ttbrk: '\\u23B4',\n\tTcaron: '\\u0164',\n\ttcaron: '\\u0165',\n\tTcedil: '\\u0162',\n\ttcedil: '\\u0163',\n\tTcy: '\\u0422',\n\ttcy: '\\u0442',\n\ttdot: '\\u20DB',\n\ttelrec: '\\u2315',\n\tTfr: '\\uD835\\uDD17',\n\ttfr: '\\uD835\\uDD31',\n\tthere4: '\\u2234',\n\tTherefore: '\\u2234',\n\ttherefore: '\\u2234',\n\tTheta: '\\u0398',\n\ttheta: '\\u03B8',\n\tthetasym: '\\u03D1',\n\tthetav: '\\u03D1',\n\tthickapprox: '\\u2248',\n\tthicksim: '\\u223C',\n\tThickSpace: '\\u205F\\u200A',\n\tthinsp: '\\u2009',\n\tThinSpace: '\\u2009',\n\tthkap: '\\u2248',\n\tthksim: '\\u223C',\n\tTHORN: '\\u00DE',\n\tthorn: '\\u00FE',\n\tTilde: '\\u223C',\n\ttilde: '\\u02DC',\n\tTildeEqual: '\\u2243',\n\tTildeFullEqual: '\\u2245',\n\tTildeTilde: '\\u2248',\n\ttimes: '\\u00D7',\n\ttimesb: '\\u22A0',\n\ttimesbar: '\\u2A31',\n\ttimesd: '\\u2A30',\n\ttint: '\\u222D',\n\ttoea: '\\u2928',\n\ttop: '\\u22A4',\n\ttopbot: '\\u2336',\n\ttopcir: '\\u2AF1',\n\tTopf: '\\uD835\\uDD4B',\n\ttopf: '\\uD835\\uDD65',\n\ttopfork: '\\u2ADA',\n\ttosa: '\\u2929',\n\ttprime: '\\u2034',\n\tTRADE: '\\u2122',\n\ttrade: '\\u2122',\n\ttriangle: '\\u25B5',\n\ttriangledown: '\\u25BF',\n\ttriangleleft: '\\u25C3',\n\ttrianglelefteq: '\\u22B4',\n\ttriangleq: '\\u225C',\n\ttriangleright: '\\u25B9',\n\ttrianglerighteq: '\\u22B5',\n\ttridot: '\\u25EC',\n\ttrie: '\\u225C',\n\ttriminus: '\\u2A3A',\n\tTripleDot: '\\u20DB',\n\ttriplus: '\\u2A39',\n\ttrisb: '\\u29CD',\n\ttritime: '\\u2A3B',\n\ttrpezium: '\\u23E2',\n\tTscr: '\\uD835\\uDCAF',\n\ttscr: '\\uD835\\uDCC9',\n\tTScy: '\\u0426',\n\ttscy: '\\u0446',\n\tTSHcy: '\\u040B',\n\ttshcy: '\\u045B',\n\tTstrok: '\\u0166',\n\ttstrok: '\\u0167',\n\ttwixt: '\\u226C',\n\ttwoheadleftarrow: '\\u219E',\n\ttwoheadrightarrow: '\\u21A0',\n\tUacute: '\\u00DA',\n\tuacute: '\\u00FA',\n\tUarr: '\\u219F',\n\tuArr: '\\u21D1',\n\tuarr: '\\u2191',\n\tUarrocir: '\\u2949',\n\tUbrcy: '\\u040E',\n\tubrcy: '\\u045E',\n\tUbreve: '\\u016C',\n\tubreve: '\\u016D',\n\tUcirc: '\\u00DB',\n\tucirc: '\\u00FB',\n\tUcy: '\\u0423',\n\tucy: '\\u0443',\n\tudarr: '\\u21C5',\n\tUdblac: '\\u0170',\n\tudblac: '\\u0171',\n\tudhar: '\\u296E',\n\tufisht: '\\u297E',\n\tUfr: '\\uD835\\uDD18',\n\tufr: '\\uD835\\uDD32',\n\tUgrave: '\\u00D9',\n\tugrave: '\\u00F9',\n\tuHar: '\\u2963',\n\tuharl: '\\u21BF',\n\tuharr: '\\u21BE',\n\tuhblk: '\\u2580',\n\tulcorn: '\\u231C',\n\tulcorner: '\\u231C',\n\tulcrop: '\\u230F',\n\tultri: '\\u25F8',\n\tUmacr: '\\u016A',\n\tumacr: '\\u016B',\n\tuml: '\\u00A8',\n\tUnderBar: '\\u005F',\n\tUnderBrace: '\\u23DF',\n\tUnderBracket: '\\u23B5',\n\tUnderParenthesis: '\\u23DD',\n\tUnion: '\\u22C3',\n\tUnionPlus: '\\u228E',\n\tUogon: '\\u0172',\n\tuogon: '\\u0173',\n\tUopf: '\\uD835\\uDD4C',\n\tuopf: '\\uD835\\uDD66',\n\tUpArrow: '\\u2191',\n\tUparrow: '\\u21D1',\n\tuparrow: '\\u2191',\n\tUpArrowBar: '\\u2912',\n\tUpArrowDownArrow: '\\u21C5',\n\tUpDownArrow: '\\u2195',\n\tUpdownarrow: '\\u21D5',\n\tupdownarrow: '\\u2195',\n\tUpEquilibrium: '\\u296E',\n\tupharpoonleft: '\\u21BF',\n\tupharpoonright: '\\u21BE',\n\tuplus: '\\u228E',\n\tUpperLeftArrow: '\\u2196',\n\tUpperRightArrow: '\\u2197',\n\tUpsi: '\\u03D2',\n\tupsi: '\\u03C5',\n\tupsih: '\\u03D2',\n\tUpsilon: '\\u03A5',\n\tupsilon: '\\u03C5',\n\tUpTee: '\\u22A5',\n\tUpTeeArrow: '\\u21A5',\n\tupuparrows: '\\u21C8',\n\turcorn: '\\u231D',\n\turcorner: '\\u231D',\n\turcrop: '\\u230E',\n\tUring: '\\u016E',\n\turing: '\\u016F',\n\turtri: '\\u25F9',\n\tUscr: '\\uD835\\uDCB0',\n\tuscr: '\\uD835\\uDCCA',\n\tutdot: '\\u22F0',\n\tUtilde: '\\u0168',\n\tutilde: '\\u0169',\n\tutri: '\\u25B5',\n\tutrif: '\\u25B4',\n\tuuarr: '\\u21C8',\n\tUuml: '\\u00DC',\n\tuuml: '\\u00FC',\n\tuwangle: '\\u29A7',\n\tvangrt: '\\u299C',\n\tvarepsilon: '\\u03F5',\n\tvarkappa: '\\u03F0',\n\tvarnothing: '\\u2205',\n\tvarphi: '\\u03D5',\n\tvarpi: '\\u03D6',\n\tvarpropto: '\\u221D',\n\tvArr: '\\u21D5',\n\tvarr: '\\u2195',\n\tvarrho: '\\u03F1',\n\tvarsigma: '\\u03C2',\n\tvarsubsetneq: '\\u228A\\uFE00',\n\tvarsubsetneqq: '\\u2ACB\\uFE00',\n\tvarsupsetneq: '\\u228B\\uFE00',\n\tvarsupsetneqq: '\\u2ACC\\uFE00',\n\tvartheta: '\\u03D1',\n\tvartriangleleft: '\\u22B2',\n\tvartriangleright: '\\u22B3',\n\tVbar: '\\u2AEB',\n\tvBar: '\\u2AE8',\n\tvBarv: '\\u2AE9',\n\tVcy: '\\u0412',\n\tvcy: '\\u0432',\n\tVDash: '\\u22AB',\n\tVdash: '\\u22A9',\n\tvDash: '\\u22A8',\n\tvdash: '\\u22A2',\n\tVdashl: '\\u2AE6',\n\tVee: '\\u22C1',\n\tvee: '\\u2228',\n\tveebar: '\\u22BB',\n\tveeeq: '\\u225A',\n\tvellip: '\\u22EE',\n\tVerbar: '\\u2016',\n\tverbar: '\\u007C',\n\tVert: '\\u2016',\n\tvert: '\\u007C',\n\tVerticalBar: '\\u2223',\n\tVerticalLine: '\\u007C',\n\tVerticalSeparator: '\\u2758',\n\tVerticalTilde: '\\u2240',\n\tVeryThinSpace: '\\u200A',\n\tVfr: '\\uD835\\uDD19',\n\tvfr: '\\uD835\\uDD33',\n\tvltri: '\\u22B2',\n\tvnsub: '\\u2282\\u20D2',\n\tvnsup: '\\u2283\\u20D2',\n\tVopf: '\\uD835\\uDD4D',\n\tvopf: '\\uD835\\uDD67',\n\tvprop: '\\u221D',\n\tvrtri: '\\u22B3',\n\tVscr: '\\uD835\\uDCB1',\n\tvscr: '\\uD835\\uDCCB',\n\tvsubnE: '\\u2ACB\\uFE00',\n\tvsubne: '\\u228A\\uFE00',\n\tvsupnE: '\\u2ACC\\uFE00',\n\tvsupne: '\\u228B\\uFE00',\n\tVvdash: '\\u22AA',\n\tvzigzag: '\\u299A',\n\tWcirc: '\\u0174',\n\twcirc: '\\u0175',\n\twedbar: '\\u2A5F',\n\tWedge: '\\u22C0',\n\twedge: '\\u2227',\n\twedgeq: '\\u2259',\n\tweierp: '\\u2118',\n\tWfr: '\\uD835\\uDD1A',\n\twfr: '\\uD835\\uDD34',\n\tWopf: '\\uD835\\uDD4E',\n\twopf: '\\uD835\\uDD68',\n\twp: '\\u2118',\n\twr: '\\u2240',\n\twreath: '\\u2240',\n\tWscr: '\\uD835\\uDCB2',\n\twscr: '\\uD835\\uDCCC',\n\txcap: '\\u22C2',\n\txcirc: '\\u25EF',\n\txcup: '\\u22C3',\n\txdtri: '\\u25BD',\n\tXfr: '\\uD835\\uDD1B',\n\txfr: '\\uD835\\uDD35',\n\txhArr: '\\u27FA',\n\txharr: '\\u27F7',\n\tXi: '\\u039E',\n\txi: '\\u03BE',\n\txlArr: '\\u27F8',\n\txlarr: '\\u27F5',\n\txmap: '\\u27FC',\n\txnis: '\\u22FB',\n\txodot: '\\u2A00',\n\tXopf: '\\uD835\\uDD4F',\n\txopf: '\\uD835\\uDD69',\n\txoplus: '\\u2A01',\n\txotime: '\\u2A02',\n\txrArr: '\\u27F9',\n\txrarr: '\\u27F6',\n\tXscr: '\\uD835\\uDCB3',\n\txscr: '\\uD835\\uDCCD',\n\txsqcup: '\\u2A06',\n\txuplus: '\\u2A04',\n\txutri: '\\u25B3',\n\txvee: '\\u22C1',\n\txwedge: '\\u22C0',\n\tYacute: '\\u00DD',\n\tyacute: '\\u00FD',\n\tYAcy: '\\u042F',\n\tyacy: '\\u044F',\n\tYcirc: '\\u0176',\n\tycirc: '\\u0177',\n\tYcy: '\\u042B',\n\tycy: '\\u044B',\n\tyen: '\\u00A5',\n\tYfr: '\\uD835\\uDD1C',\n\tyfr: '\\uD835\\uDD36',\n\tYIcy: '\\u0407',\n\tyicy: '\\u0457',\n\tYopf: '\\uD835\\uDD50',\n\tyopf: '\\uD835\\uDD6A',\n\tYscr: '\\uD835\\uDCB4',\n\tyscr: '\\uD835\\uDCCE',\n\tYUcy: '\\u042E',\n\tyucy: '\\u044E',\n\tYuml: '\\u0178',\n\tyuml: '\\u00FF',\n\tZacute: '\\u0179',\n\tzacute: '\\u017A',\n\tZcaron: '\\u017D',\n\tzcaron: '\\u017E',\n\tZcy: '\\u0417',\n\tzcy: '\\u0437',\n\tZdot: '\\u017B',\n\tzdot: '\\u017C',\n\tzeetrf: '\\u2128',\n\tZeroWidthSpace: '\\u200B',\n\tZeta: '\\u0396',\n\tzeta: '\\u03B6',\n\tZfr: '\\u2128',\n\tzfr: '\\uD835\\uDD37',\n\tZHcy: '\\u0416',\n\tzhcy: '\\u0436',\n\tzigrarr: '\\u21DD',\n\tZopf: '\\u2124',\n\tzopf: '\\uD835\\uDD6B',\n\tZscr: '\\uD835\\uDCB5',\n\tzscr: '\\uD835\\uDCCF',\n\tzwj: '\\u200D',\n\tzwnj: '\\u200C',\n});\n\n/**\n * @deprecated use `HTML_ENTITIES` instead\n * @see HTML_ENTITIES\n */\nexports.entityMap = exports.HTML_ENTITIES;\n","var dom = require('./dom')\nexports.DOMImplementation = dom.DOMImplementation\nexports.XMLSerializer = dom.XMLSerializer\nexports.DOMParser = require('./dom-parser').DOMParser\n","var NAMESPACE = require(\"./conventions\").NAMESPACE;\n\n//[4] \tNameStartChar\t ::= \t\":\" | [A-Z] | \"_\" | [a-z] | [#xC0-#xD6] | [#xD8-#xF6] | [#xF8-#x2FF] | [#x370-#x37D] | [#x37F-#x1FFF] | [#x200C-#x200D] | [#x2070-#x218F] | [#x2C00-#x2FEF] | [#x3001-#xD7FF] | [#xF900-#xFDCF] | [#xFDF0-#xFFFD] | [#x10000-#xEFFFF]\n//[4a] \tNameChar\t ::= \tNameStartChar | \"-\" | \".\" | [0-9] | #xB7 | [#x0300-#x036F] | [#x203F-#x2040]\n//[5] \tName\t ::= \tNameStartChar (NameChar)*\nvar nameStartChar = /[A-Z_a-z\\xC0-\\xD6\\xD8-\\xF6\\u00F8-\\u02FF\\u0370-\\u037D\\u037F-\\u1FFF\\u200C-\\u200D\\u2070-\\u218F\\u2C00-\\u2FEF\\u3001-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFFD]///\\u10000-\\uEFFFF\nvar nameChar = new RegExp(\"[\\\\-\\\\.0-9\"+nameStartChar.source.slice(1,-1)+\"\\\\u00B7\\\\u0300-\\\\u036F\\\\u203F-\\\\u2040]\");\nvar tagNamePattern = new RegExp('^'+nameStartChar.source+nameChar.source+'*(?:\\:'+nameStartChar.source+nameChar.source+'*)?$');\n//var tagNamePattern = /^[a-zA-Z_][\\w\\-\\.]*(?:\\:[a-zA-Z_][\\w\\-\\.]*)?$/\n//var handlers = 'resolveEntity,getExternalSubset,characters,endDocument,endElement,endPrefixMapping,ignorableWhitespace,processingInstruction,setDocumentLocator,skippedEntity,startDocument,startElement,startPrefixMapping,notationDecl,unparsedEntityDecl,error,fatalError,warning,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,comment,endCDATA,endDTD,endEntity,startCDATA,startDTD,startEntity'.split(',')\n\n//S_TAG,\tS_ATTR,\tS_EQ,\tS_ATTR_NOQUOT_VALUE\n//S_ATTR_SPACE,\tS_ATTR_END,\tS_TAG_SPACE, S_TAG_CLOSE\nvar S_TAG = 0;//tag name offerring\nvar S_ATTR = 1;//attr name offerring\nvar S_ATTR_SPACE=2;//attr name end and space offer\nvar S_EQ = 3;//=space?\nvar S_ATTR_NOQUOT_VALUE = 4;//attr value(no quot value only)\nvar S_ATTR_END = 5;//attr value end and no space(quot end)\nvar S_TAG_SPACE = 6;//(attr value end || tag end ) && (space offer)\nvar S_TAG_CLOSE = 7;//closed el\n\n/**\n * Creates an error that will not be caught by XMLReader aka the SAX parser.\n *\n * @param {string} message\n * @param {any?} locator Optional, can provide details about the location in the source\n * @constructor\n */\nfunction ParseError(message, locator) {\n\tthis.message = message\n\tthis.locator = locator\n\tif(Error.captureStackTrace) Error.captureStackTrace(this, ParseError);\n}\nParseError.prototype = new Error();\nParseError.prototype.name = ParseError.name\n\nfunction XMLReader(){\n\n}\n\nXMLReader.prototype = {\n\tparse:function(source,defaultNSMap,entityMap){\n\t\tvar domBuilder = this.domBuilder;\n\t\tdomBuilder.startDocument();\n\t\t_copy(defaultNSMap ,defaultNSMap = {})\n\t\tparse(source,defaultNSMap,entityMap,\n\t\t\t\tdomBuilder,this.errorHandler);\n\t\tdomBuilder.endDocument();\n\t}\n}\nfunction parse(source,defaultNSMapCopy,entityMap,domBuilder,errorHandler){\n\tfunction fixedFromCharCode(code) {\n\t\t// String.prototype.fromCharCode does not supports\n\t\t// > 2 bytes unicode chars directly\n\t\tif (code > 0xffff) {\n\t\t\tcode -= 0x10000;\n\t\t\tvar surrogate1 = 0xd800 + (code >> 10)\n\t\t\t\t, surrogate2 = 0xdc00 + (code & 0x3ff);\n\n\t\t\treturn String.fromCharCode(surrogate1, surrogate2);\n\t\t} else {\n\t\t\treturn String.fromCharCode(code);\n\t\t}\n\t}\n\tfunction entityReplacer(a){\n\t\tvar k = a.slice(1,-1);\n\t\tif (Object.hasOwnProperty.call(entityMap, k)) {\n\t\t\treturn entityMap[k];\n\t\t}else if(k.charAt(0) === '#'){\n\t\t\treturn fixedFromCharCode(parseInt(k.substr(1).replace('x','0x')))\n\t\t}else{\n\t\t\terrorHandler.error('entity not found:'+a);\n\t\t\treturn a;\n\t\t}\n\t}\n\tfunction appendText(end){//has some bugs\n\t\tif(end>start){\n\t\t\tvar xt = source.substring(start,end).replace(/&#?\\w+;/g,entityReplacer);\n\t\t\tlocator&&position(start);\n\t\t\tdomBuilder.characters(xt,0,end-start);\n\t\t\tstart = end\n\t\t}\n\t}\n\tfunction position(p,m){\n\t\twhile(p>=lineEnd && (m = linePattern.exec(source))){\n\t\t\tlineStart = m.index;\n\t\t\tlineEnd = lineStart + m[0].length;\n\t\t\tlocator.lineNumber++;\n\t\t\t//console.log('line++:',locator,startPos,endPos)\n\t\t}\n\t\tlocator.columnNumber = p-lineStart+1;\n\t}\n\tvar lineStart = 0;\n\tvar lineEnd = 0;\n\tvar linePattern = /.*(?:\\r\\n?|\\n)|.*$/g\n\tvar locator = domBuilder.locator;\n\n\tvar parseStack = [{currentNSMap:defaultNSMapCopy}]\n\tvar closeMap = {};\n\tvar start = 0;\n\twhile(true){\n\t\ttry{\n\t\t\tvar tagStart = source.indexOf('<',start);\n\t\t\tif(tagStart<0){\n\t\t\t\tif(!source.substr(start).match(/^\\s*$/)){\n\t\t\t\t\tvar doc = domBuilder.doc;\n\t \t\t\tvar text = doc.createTextNode(source.substr(start));\n\t \t\t\tdoc.appendChild(text);\n\t \t\t\tdomBuilder.currentElement = text;\n\t\t\t\t}\n\t\t\t\treturn;\n\t\t\t}\n\t\t\tif(tagStart>start){\n\t\t\t\tappendText(tagStart);\n\t\t\t}\n\t\t\tswitch(source.charAt(tagStart+1)){\n\t\t\tcase '/':\n\t\t\t\tvar end = source.indexOf('>',tagStart+3);\n\t\t\t\tvar tagName = source.substring(tagStart + 2, end).replace(/[ \\t\\n\\r]+$/g, '');\n\t\t\t\tvar config = parseStack.pop();\n\t\t\t\tif(end<0){\n\n\t \t\ttagName = source.substring(tagStart+2).replace(/[\\s<].*/,'');\n\t \t\terrorHandler.error(\"end tag name: \"+tagName+' is not complete:'+config.tagName);\n\t \t\tend = tagStart+1+tagName.length;\n\t \t}else if(tagName.match(/\\s\n\t\t\t\tlocator&&position(tagStart);\n\t\t\t\tend = parseInstruction(source,tagStart,domBuilder);\n\t\t\t\tbreak;\n\t\t\tcase '!':// start){\n\t\t\tstart = end;\n\t\t}else{\n\t\t\t//TODO: 这里有可能sax回退，有位置错误风险\n\t\t\tappendText(Math.max(tagStart,start)+1);\n\t\t}\n\t}\n}\nfunction copyLocator(f,t){\n\tt.lineNumber = f.lineNumber;\n\tt.columnNumber = f.columnNumber;\n\treturn t;\n}\n\n/**\n * @see #appendElement(source,elStartEnd,el,selfClosed,entityReplacer,domBuilder,parseStack);\n * @return end of the elementStartPart(end of elementEndPart for selfClosed el)\n */\nfunction parseElementStartPart(source,start,el,currentNSMap,entityReplacer,errorHandler){\n\n\t/**\n\t * @param {string} qname\n\t * @param {string} value\n\t * @param {number} startIndex\n\t */\n\tfunction addAttribute(qname, value, startIndex) {\n\t\tif (el.attributeNames.hasOwnProperty(qname)) {\n\t\t\terrorHandler.fatalError('Attribute ' + qname + ' redefined')\n\t\t}\n\t\tel.addValue(\n\t\t\tqname,\n\t\t\t// @see https://www.w3.org/TR/xml/#AVNormalize\n\t\t\t// since the xmldom sax parser does not \"interpret\" DTD the following is not implemented:\n\t\t\t// - recursive replacement of (DTD) entity references\n\t\t\t// - trimming and collapsing multiple spaces into a single one for attributes that are not of type CDATA\n\t\t\tvalue.replace(/[\\t\\n\\r]/g, ' ').replace(/&#?\\w+;/g, entityReplacer),\n\t\t\tstartIndex\n\t\t)\n\t}\n\tvar attrName;\n\tvar value;\n\tvar p = ++start;\n\tvar s = S_TAG;//status\n\twhile(true){\n\t\tvar c = source.charAt(p);\n\t\tswitch(c){\n\t\tcase '=':\n\t\t\tif(s === S_ATTR){//attrName\n\t\t\t\tattrName = source.slice(start,p);\n\t\t\t\ts = S_EQ;\n\t\t\t}else if(s === S_ATTR_SPACE){\n\t\t\t\ts = S_EQ;\n\t\t\t}else{\n\t\t\t\t//fatalError: equal must after attrName or space after attrName\n\t\t\t\tthrow new Error('attribute equal must after attrName'); // No known test case\n\t\t\t}\n\t\t\tbreak;\n\t\tcase '\\'':\n\t\tcase '\"':\n\t\t\tif(s === S_EQ || s === S_ATTR //|| s == S_ATTR_SPACE\n\t\t\t\t){//equal\n\t\t\t\tif(s === S_ATTR){\n\t\t\t\t\terrorHandler.warning('attribute value must after \"=\"')\n\t\t\t\t\tattrName = source.slice(start,p)\n\t\t\t\t}\n\t\t\t\tstart = p+1;\n\t\t\t\tp = source.indexOf(c,start)\n\t\t\t\tif(p>0){\n\t\t\t\t\tvalue = source.slice(start, p);\n\t\t\t\t\taddAttribute(attrName, value, start-1);\n\t\t\t\t\ts = S_ATTR_END;\n\t\t\t\t}else{\n\t\t\t\t\t//fatalError: no end quot match\n\t\t\t\t\tthrow new Error('attribute value no end \\''+c+'\\' match');\n\t\t\t\t}\n\t\t\t}else if(s == S_ATTR_NOQUOT_VALUE){\n\t\t\t\tvalue = source.slice(start, p);\n\t\t\t\taddAttribute(attrName, value, start);\n\t\t\t\terrorHandler.warning('attribute \"'+attrName+'\" missed start quot('+c+')!!');\n\t\t\t\tstart = p+1;\n\t\t\t\ts = S_ATTR_END\n\t\t\t}else{\n\t\t\t\t//fatalError: no equal before\n\t\t\t\tthrow new Error('attribute value must after \"=\"'); // No known test case\n\t\t\t}\n\t\t\tbreak;\n\t\tcase '/':\n\t\t\tswitch(s){\n\t\t\tcase S_TAG:\n\t\t\t\tel.setTagName(source.slice(start,p));\n\t\t\tcase S_ATTR_END:\n\t\t\tcase S_TAG_SPACE:\n\t\t\tcase S_TAG_CLOSE:\n\t\t\t\ts =S_TAG_CLOSE;\n\t\t\t\tel.closed = true;\n\t\t\tcase S_ATTR_NOQUOT_VALUE:\n\t\t\tcase S_ATTR:\n\t\t\t\tbreak;\n\t\t\t\tcase S_ATTR_SPACE:\n\t\t\t\t\tel.closed = true;\n\t\t\t\tbreak;\n\t\t\t//case S_EQ:\n\t\t\tdefault:\n\t\t\t\tthrow new Error(\"attribute invalid close char('/')\") // No known test case\n\t\t\t}\n\t\t\tbreak;\n\t\tcase ''://end document\n\t\t\terrorHandler.error('unexpected end of input');\n\t\t\tif(s == S_TAG){\n\t\t\t\tel.setTagName(source.slice(start,p));\n\t\t\t}\n\t\t\treturn p;\n\t\tcase '>':\n\t\t\tswitch(s){\n\t\t\tcase S_TAG:\n\t\t\t\tel.setTagName(source.slice(start,p));\n\t\t\tcase S_ATTR_END:\n\t\t\tcase S_TAG_SPACE:\n\t\t\tcase S_TAG_CLOSE:\n\t\t\t\tbreak;//normal\n\t\t\tcase S_ATTR_NOQUOT_VALUE://Compatible state\n\t\t\tcase S_ATTR:\n\t\t\t\tvalue = source.slice(start,p);\n\t\t\t\tif(value.slice(-1) === '/'){\n\t\t\t\t\tel.closed = true;\n\t\t\t\t\tvalue = value.slice(0,-1)\n\t\t\t\t}\n\t\t\tcase S_ATTR_SPACE:\n\t\t\t\tif(s === S_ATTR_SPACE){\n\t\t\t\t\tvalue = attrName;\n\t\t\t\t}\n\t\t\t\tif(s == S_ATTR_NOQUOT_VALUE){\n\t\t\t\t\terrorHandler.warning('attribute \"'+value+'\" missed quot(\")!');\n\t\t\t\t\taddAttribute(attrName, value, start)\n\t\t\t\t}else{\n\t\t\t\t\tif(!NAMESPACE.isHTML(currentNSMap['']) || !value.match(/^(?:disabled|checked|selected)$/i)){\n\t\t\t\t\t\terrorHandler.warning('attribute \"'+value+'\" missed value!! \"'+value+'\" instead!!')\n\t\t\t\t\t}\n\t\t\t\t\taddAttribute(value, value, start)\n\t\t\t\t}\n\t\t\t\tbreak;\n\t\t\tcase S_EQ:\n\t\t\t\tthrow new Error('attribute value missed!!');\n\t\t\t}\n//\t\t\tconsole.log(tagName,tagNamePattern,tagNamePattern.test(tagName))\n\t\t\treturn p;\n\t\t/*xml space '\\x20' | #x9 | #xD | #xA; */\n\t\tcase '\\u0080':\n\t\t\tc = ' ';\n\t\tdefault:\n\t\t\tif(c<= ' '){//space\n\t\t\t\tswitch(s){\n\t\t\t\tcase S_TAG:\n\t\t\t\t\tel.setTagName(source.slice(start,p));//tagName\n\t\t\t\t\ts = S_TAG_SPACE;\n\t\t\t\t\tbreak;\n\t\t\t\tcase S_ATTR:\n\t\t\t\t\tattrName = source.slice(start,p)\n\t\t\t\t\ts = S_ATTR_SPACE;\n\t\t\t\t\tbreak;\n\t\t\t\tcase S_ATTR_NOQUOT_VALUE:\n\t\t\t\t\tvar value = source.slice(start, p);\n\t\t\t\t\terrorHandler.warning('attribute \"'+value+'\" missed quot(\")!!');\n\t\t\t\t\taddAttribute(attrName, value, start)\n\t\t\t\tcase S_ATTR_END:\n\t\t\t\t\ts = S_TAG_SPACE;\n\t\t\t\t\tbreak;\n\t\t\t\t//case S_TAG_SPACE:\n\t\t\t\t//case S_EQ:\n\t\t\t\t//case S_ATTR_SPACE:\n\t\t\t\t//\tvoid();break;\n\t\t\t\t//case S_TAG_CLOSE:\n\t\t\t\t\t//ignore warning\n\t\t\t\t}\n\t\t\t}else{//not space\n//S_TAG,\tS_ATTR,\tS_EQ,\tS_ATTR_NOQUOT_VALUE\n//S_ATTR_SPACE,\tS_ATTR_END,\tS_TAG_SPACE, S_TAG_CLOSE\n\t\t\t\tswitch(s){\n\t\t\t\t//case S_TAG:void();break;\n\t\t\t\t//case S_ATTR:void();break;\n\t\t\t\t//case S_ATTR_NOQUOT_VALUE:void();break;\n\t\t\t\tcase S_ATTR_SPACE:\n\t\t\t\t\tvar tagName = el.tagName;\n\t\t\t\t\tif (!NAMESPACE.isHTML(currentNSMap['']) || !attrName.match(/^(?:disabled|checked|selected)$/i)) {\n\t\t\t\t\t\terrorHandler.warning('attribute \"'+attrName+'\" missed value!! \"'+attrName+'\" instead2!!')\n\t\t\t\t\t}\n\t\t\t\t\taddAttribute(attrName, attrName, start);\n\t\t\t\t\tstart = p;\n\t\t\t\t\ts = S_ATTR;\n\t\t\t\t\tbreak;\n\t\t\t\tcase S_ATTR_END:\n\t\t\t\t\terrorHandler.warning('attribute space is required\"'+attrName+'\"!!')\n\t\t\t\tcase S_TAG_SPACE:\n\t\t\t\t\ts = S_ATTR;\n\t\t\t\t\tstart = p;\n\t\t\t\t\tbreak;\n\t\t\t\tcase S_EQ:\n\t\t\t\t\ts = S_ATTR_NOQUOT_VALUE;\n\t\t\t\t\tstart = p;\n\t\t\t\t\tbreak;\n\t\t\t\tcase S_TAG_CLOSE:\n\t\t\t\t\tthrow new Error(\"elements closed character '/' and '>' must be connected to\");\n\t\t\t\t}\n\t\t\t}\n\t\t}//end outer switch\n\t\t//console.log('p++',p)\n\t\tp++;\n\t}\n}\n/**\n * @return true if has new namespace define\n */\nfunction appendElement(el,domBuilder,currentNSMap){\n\tvar tagName = el.tagName;\n\tvar localNSMap = null;\n\t//var currentNSMap = parseStack[parseStack.length-1].currentNSMap;\n\tvar i = el.length;\n\twhile(i--){\n\t\tvar a = el[i];\n\t\tvar qName = a.qName;\n\t\tvar value = a.value;\n\t\tvar nsp = qName.indexOf(':');\n\t\tif(nsp>0){\n\t\t\tvar prefix = a.prefix = qName.slice(0,nsp);\n\t\t\tvar localName = qName.slice(nsp+1);\n\t\t\tvar nsPrefix = prefix === 'xmlns' && localName\n\t\t}else{\n\t\t\tlocalName = qName;\n\t\t\tprefix = null\n\t\t\tnsPrefix = qName === 'xmlns' && ''\n\t\t}\n\t\t//can not set prefix,because prefix !== ''\n\t\ta.localName = localName ;\n\t\t//prefix == null for no ns prefix attribute\n\t\tif(nsPrefix !== false){//hack!!\n\t\t\tif(localNSMap == null){\n\t\t\t\tlocalNSMap = {}\n\t\t\t\t//console.log(currentNSMap,0)\n\t\t\t\t_copy(currentNSMap,currentNSMap={})\n\t\t\t\t//console.log(currentNSMap,1)\n\t\t\t}\n\t\t\tcurrentNSMap[nsPrefix] = localNSMap[nsPrefix] = value;\n\t\t\ta.uri = NAMESPACE.XMLNS\n\t\t\tdomBuilder.startPrefixMapping(nsPrefix, value)\n\t\t}\n\t}\n\tvar i = el.length;\n\twhile(i--){\n\t\ta = el[i];\n\t\tvar prefix = a.prefix;\n\t\tif(prefix){//no prefix attribute has no namespace\n\t\t\tif(prefix === 'xml'){\n\t\t\t\ta.uri = NAMESPACE.XML;\n\t\t\t}if(prefix !== 'xmlns'){\n\t\t\t\ta.uri = currentNSMap[prefix || '']\n\n\t\t\t\t//{console.log('###'+a.qName,domBuilder.locator.systemId+'',currentNSMap,a.uri)}\n\t\t\t}\n\t\t}\n\t}\n\tvar nsp = tagName.indexOf(':');\n\tif(nsp>0){\n\t\tprefix = el.prefix = tagName.slice(0,nsp);\n\t\tlocalName = el.localName = tagName.slice(nsp+1);\n\t}else{\n\t\tprefix = null;//important!!\n\t\tlocalName = el.localName = tagName;\n\t}\n\t//no prefix element has default namespace\n\tvar ns = el.uri = currentNSMap[prefix || ''];\n\tdomBuilder.startElement(ns,localName,tagName,el);\n\t//endPrefixMapping and startPrefixMapping have not any help for dom builder\n\t//localNSMap = null\n\tif(el.closed){\n\t\tdomBuilder.endElement(ns,localName,tagName);\n\t\tif(localNSMap){\n\t\t\tfor (prefix in localNSMap) {\n\t\t\t\tif (Object.prototype.hasOwnProperty.call(localNSMap, prefix)) {\n\t\t\t\t\tdomBuilder.endPrefixMapping(prefix);\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}else{\n\t\tel.currentNSMap = currentNSMap;\n\t\tel.localNSMap = localNSMap;\n\t\t//parseStack.push(el);\n\t\treturn true;\n\t}\n}\nfunction parseHtmlSpecialContent(source,elStartEnd,tagName,entityReplacer,domBuilder){\n\tif(/^(?:script|textarea)$/i.test(tagName)){\n\t\tvar elEndStart = source.indexOf('',elStartEnd);\n\t\tvar text = source.substring(elStartEnd+1,elEndStart);\n\t\tif(/[&<]/.test(text)){\n\t\t\tif(/^script$/i.test(tagName)){\n\t\t\t\t//if(!/\\]\\]>/.test(text)){\n\t\t\t\t\t//lexHandler.startCDATA();\n\t\t\t\t\tdomBuilder.characters(text,0,text.length);\n\t\t\t\t\t//lexHandler.endCDATA();\n\t\t\t\t\treturn elEndStart;\n\t\t\t\t//}\n\t\t\t}//}else{//text area\n\t\t\t\ttext = text.replace(/&#?\\w+;/g,entityReplacer);\n\t\t\t\tdomBuilder.characters(text,0,text.length);\n\t\t\t\treturn elEndStart;\n\t\t\t//}\n\n\t\t}\n\t}\n\treturn elStartEnd+1;\n}\nfunction fixSelfClosed(source,elStartEnd,tagName,closeMap){\n\t//if(tagName in closeMap){\n\tvar pos = closeMap[tagName];\n\tif(pos == null){\n\t\t//console.log(tagName)\n\t\tpos = source.lastIndexOf('')\n\t\tif(pos',start+4);\n\t\t\t//append comment source.substring(4,end)//';\n if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {\n // ignore frames with unrecognized character encodings\n return;\n } // parsing fields [ID3v2.4.0 section 4.14.]\n\n mimeTypeEndIndex = typedArrayIndexOf(frame.data, 0, i);\n if (mimeTypeEndIndex < 0) {\n // malformed frame\n return;\n } // parsing Mime type field (terminated with \\0)\n\n frame.mimeType = parseIso88591$1(frame.data, i, mimeTypeEndIndex);\n i = mimeTypeEndIndex + 1; // parsing 1-byte Picture Type field\n\n frame.pictureType = frame.data[i];\n i++;\n descriptionEndIndex = typedArrayIndexOf(frame.data, 0, i);\n if (descriptionEndIndex < 0) {\n // malformed frame\n return;\n } // parsing Description field (terminated with \\0)\n\n frame.description = parseUtf8(frame.data, i, descriptionEndIndex);\n i = descriptionEndIndex + 1;\n if (frame.mimeType === LINK_MIME_TYPE) {\n // parsing Picture Data field as URL (always represented as ISO-8859-1 [ID3v2.4.0 section 4.])\n frame.url = parseIso88591$1(frame.data, i, frame.data.length);\n } else {\n // parsing Picture Data field as binary data\n frame.pictureData = frame.data.subarray(i, frame.data.length);\n }\n },\n 'T*': function (frame) {\n if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {\n // ignore frames with unrecognized character encodings\n return;\n } // parse text field, do not include null terminator in the frame value\n // frames that allow different types of encoding contain terminated text [ID3v2.4.0 section 4.]\n\n frame.value = parseUtf8(frame.data, 1, frame.data.length).replace(/\\0*$/, ''); // text information frames supports multiple strings, stored as a terminator separated list [ID3v2.4.0 section 4.2.]\n\n frame.values = frame.value.split('\\0');\n },\n 'TXXX': function (frame) {\n var descriptionEndIndex;\n if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {\n // ignore frames with unrecognized character encodings\n return;\n }\n descriptionEndIndex = typedArrayIndexOf(frame.data, 0, 1);\n if (descriptionEndIndex === -1) {\n return;\n } // parse the text fields\n\n frame.description = parseUtf8(frame.data, 1, descriptionEndIndex); // do not include the null terminator in the tag value\n // frames that allow different types of encoding contain terminated text\n // [ID3v2.4.0 section 4.]\n\n frame.value = parseUtf8(frame.data, descriptionEndIndex + 1, frame.data.length).replace(/\\0*$/, '');\n frame.data = frame.value;\n },\n 'W*': function (frame) {\n // parse URL field; URL fields are always represented as ISO-8859-1 [ID3v2.4.0 section 4.]\n // if the value is followed by a string termination all the following information should be ignored [ID3v2.4.0 section 4.3]\n frame.url = parseIso88591$1(frame.data, 0, frame.data.length).replace(/\\0.*$/, '');\n },\n 'WXXX': function (frame) {\n var descriptionEndIndex;\n if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {\n // ignore frames with unrecognized character encodings\n return;\n }\n descriptionEndIndex = typedArrayIndexOf(frame.data, 0, 1);\n if (descriptionEndIndex === -1) {\n return;\n } // parse the description and URL fields\n\n frame.description = parseUtf8(frame.data, 1, descriptionEndIndex); // URL fields are always represented as ISO-8859-1 [ID3v2.4.0 section 4.]\n // if the value is followed by a string termination all the following information\n // should be ignored [ID3v2.4.0 section 4.3]\n\n frame.url = parseIso88591$1(frame.data, descriptionEndIndex + 1, frame.data.length).replace(/\\0.*$/, '');\n },\n 'PRIV': function (frame) {\n var i;\n for (i = 0; i < frame.data.length; i++) {\n if (frame.data[i] === 0) {\n // parse the description and URL fields\n frame.owner = parseIso88591$1(frame.data, 0, i);\n break;\n }\n }\n frame.privateData = frame.data.subarray(i + 1);\n frame.data = frame.privateData;\n }\n };\n var parseId3Frames$1 = function (data) {\n var frameSize,\n frameHeader,\n frameStart = 10,\n tagSize = 0,\n frames = []; // If we don't have enough data for a header, 10 bytes, \n // or 'ID3' in the first 3 bytes this is not a valid ID3 tag.\n\n if (data.length < 10 || data[0] !== 'I'.charCodeAt(0) || data[1] !== 'D'.charCodeAt(0) || data[2] !== '3'.charCodeAt(0)) {\n return;\n } // the frame size is transmitted as a 28-bit integer in the\n // last four bytes of the ID3 header.\n // The most significant bit of each byte is dropped and the\n // results concatenated to recover the actual value.\n\n tagSize = parseSyncSafeInteger$1(data.subarray(6, 10)); // ID3 reports the tag size excluding the header but it's more\n // convenient for our comparisons to include it\n\n tagSize += 10; // check bit 6 of byte 5 for the extended header flag.\n\n var hasExtendedHeader = data[5] & 0x40;\n if (hasExtendedHeader) {\n // advance the frame start past the extended header\n frameStart += 4; // header size field\n\n frameStart += parseSyncSafeInteger$1(data.subarray(10, 14));\n tagSize -= parseSyncSafeInteger$1(data.subarray(16, 20)); // clip any padding off the end\n } // parse one or more ID3 frames\n // http://id3.org/id3v2.3.0#ID3v2_frame_overview\n\n do {\n // determine the number of bytes in this frame\n frameSize = parseSyncSafeInteger$1(data.subarray(frameStart + 4, frameStart + 8));\n if (frameSize < 1) {\n break;\n }\n frameHeader = String.fromCharCode(data[frameStart], data[frameStart + 1], data[frameStart + 2], data[frameStart + 3]);\n var frame = {\n id: frameHeader,\n data: data.subarray(frameStart + 10, frameStart + frameSize + 10)\n };\n frame.key = frame.id; // parse frame values\n\n if (frameParsers[frame.id]) {\n // use frame specific parser\n frameParsers[frame.id](frame);\n } else if (frame.id[0] === 'T') {\n // use text frame generic parser\n frameParsers['T*'](frame);\n } else if (frame.id[0] === 'W') {\n // use URL link frame generic parser\n frameParsers['W*'](frame);\n }\n frames.push(frame);\n frameStart += 10; // advance past the frame header\n\n frameStart += frameSize; // advance past the frame body\n } while (frameStart < tagSize);\n return frames;\n };\n var parseId3 = {\n parseId3Frames: parseId3Frames$1,\n parseSyncSafeInteger: parseSyncSafeInteger$1,\n frameParsers: frameParsers\n };\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * Accepts program elementary stream (PES) data events and parses out\n * ID3 metadata from them, if present.\n * @see http://id3.org/id3v2.3.0\n */\n\n var Stream$5 = stream,\n StreamTypes$3 = streamTypes,\n id3 = parseId3,\n MetadataStream;\n MetadataStream = function (options) {\n var settings = {\n // the bytes of the program-level descriptor field in MP2T\n // see ISO/IEC 13818-1:2013 (E), section 2.6 \"Program and\n // program element descriptors\"\n descriptor: options && options.descriptor\n },\n // the total size in bytes of the ID3 tag being parsed\n tagSize = 0,\n // tag data that is not complete enough to be parsed\n buffer = [],\n // the total number of bytes currently in the buffer\n bufferSize = 0,\n i;\n MetadataStream.prototype.init.call(this); // calculate the text track in-band metadata track dispatch type\n // https://html.spec.whatwg.org/multipage/embedded-content.html#steps-to-expose-a-media-resource-specific-text-track\n\n this.dispatchType = StreamTypes$3.METADATA_STREAM_TYPE.toString(16);\n if (settings.descriptor) {\n for (i = 0; i < settings.descriptor.length; i++) {\n this.dispatchType += ('00' + settings.descriptor[i].toString(16)).slice(-2);\n }\n }\n this.push = function (chunk) {\n var tag, frameStart, frameSize, frame, i, frameHeader;\n if (chunk.type !== 'timed-metadata') {\n return;\n } // if data_alignment_indicator is set in the PES header,\n // we must have the start of a new ID3 tag. Assume anything\n // remaining in the buffer was malformed and throw it out\n\n if (chunk.dataAlignmentIndicator) {\n bufferSize = 0;\n buffer.length = 0;\n } // ignore events that don't look like ID3 data\n\n if (buffer.length === 0 && (chunk.data.length < 10 || chunk.data[0] !== 'I'.charCodeAt(0) || chunk.data[1] !== 'D'.charCodeAt(0) || chunk.data[2] !== '3'.charCodeAt(0))) {\n this.trigger('log', {\n level: 'warn',\n message: 'Skipping unrecognized metadata packet'\n });\n return;\n } // add this chunk to the data we've collected so far\n\n buffer.push(chunk);\n bufferSize += chunk.data.byteLength; // grab the size of the entire frame from the ID3 header\n\n if (buffer.length === 1) {\n // the frame size is transmitted as a 28-bit integer in the\n // last four bytes of the ID3 header.\n // The most significant bit of each byte is dropped and the\n // results concatenated to recover the actual value.\n tagSize = id3.parseSyncSafeInteger(chunk.data.subarray(6, 10)); // ID3 reports the tag size excluding the header but it's more\n // convenient for our comparisons to include it\n\n tagSize += 10;\n } // if the entire frame has not arrived, wait for more data\n\n if (bufferSize < tagSize) {\n return;\n } // collect the entire frame so it can be parsed\n\n tag = {\n data: new Uint8Array(tagSize),\n frames: [],\n pts: buffer[0].pts,\n dts: buffer[0].dts\n };\n for (i = 0; i < tagSize;) {\n tag.data.set(buffer[0].data.subarray(0, tagSize - i), i);\n i += buffer[0].data.byteLength;\n bufferSize -= buffer[0].data.byteLength;\n buffer.shift();\n } // find the start of the first frame and the end of the tag\n\n frameStart = 10;\n if (tag.data[5] & 0x40) {\n // advance the frame start past the extended header\n frameStart += 4; // header size field\n\n frameStart += id3.parseSyncSafeInteger(tag.data.subarray(10, 14)); // clip any padding off the end\n\n tagSize -= id3.parseSyncSafeInteger(tag.data.subarray(16, 20));\n } // parse one or more ID3 frames\n // http://id3.org/id3v2.3.0#ID3v2_frame_overview\n\n do {\n // determine the number of bytes in this frame\n frameSize = id3.parseSyncSafeInteger(tag.data.subarray(frameStart + 4, frameStart + 8));\n if (frameSize < 1) {\n this.trigger('log', {\n level: 'warn',\n message: 'Malformed ID3 frame encountered. Skipping remaining metadata parsing.'\n }); // If the frame is malformed, don't parse any further frames but allow previous valid parsed frames\n // to be sent along.\n\n break;\n }\n frameHeader = String.fromCharCode(tag.data[frameStart], tag.data[frameStart + 1], tag.data[frameStart + 2], tag.data[frameStart + 3]);\n frame = {\n id: frameHeader,\n data: tag.data.subarray(frameStart + 10, frameStart + frameSize + 10)\n };\n frame.key = frame.id; // parse frame values\n\n if (id3.frameParsers[frame.id]) {\n // use frame specific parser\n id3.frameParsers[frame.id](frame);\n } else if (frame.id[0] === 'T') {\n // use text frame generic parser\n id3.frameParsers['T*'](frame);\n } else if (frame.id[0] === 'W') {\n // use URL link frame generic parser\n id3.frameParsers['W*'](frame);\n } // handle the special PRIV frame used to indicate the start\n // time for raw AAC data\n\n if (frame.owner === 'com.apple.streaming.transportStreamTimestamp') {\n var d = frame.data,\n size = (d[3] & 0x01) << 30 | d[4] << 22 | d[5] << 14 | d[6] << 6 | d[7] >>> 2;\n size *= 4;\n size += d[7] & 0x03;\n frame.timeStamp = size; // in raw AAC, all subsequent data will be timestamped based\n // on the value of this frame\n // we couldn't have known the appropriate pts and dts before\n // parsing this ID3 tag so set those values now\n\n if (tag.pts === undefined && tag.dts === undefined) {\n tag.pts = frame.timeStamp;\n tag.dts = frame.timeStamp;\n }\n this.trigger('timestamp', frame);\n }\n tag.frames.push(frame);\n frameStart += 10; // advance past the frame header\n\n frameStart += frameSize; // advance past the frame body\n } while (frameStart < tagSize);\n this.trigger('data', tag);\n };\n };\n MetadataStream.prototype = new Stream$5();\n var metadataStream = MetadataStream;\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * A stream-based mp2t to mp4 converter. This utility can be used to\n * deliver mp4s to a SourceBuffer on platforms that support native\n * Media Source Extensions.\n */\n\n var Stream$4 = stream,\n CaptionStream$1 = captionStream,\n StreamTypes$2 = streamTypes,\n TimestampRolloverStream = timestampRolloverStream.TimestampRolloverStream; // object types\n\n var TransportPacketStream, TransportParseStream, ElementaryStream; // constants\n\n var MP2T_PACKET_LENGTH$1 = 188,\n // bytes\n SYNC_BYTE$1 = 0x47;\n /**\n * Splits an incoming stream of binary data into MPEG-2 Transport\n * Stream packets.\n */\n\n TransportPacketStream = function () {\n var buffer = new Uint8Array(MP2T_PACKET_LENGTH$1),\n bytesInBuffer = 0;\n TransportPacketStream.prototype.init.call(this); // Deliver new bytes to the stream.\n\n /**\n * Split a stream of data into M2TS packets\n **/\n\n this.push = function (bytes) {\n var startIndex = 0,\n endIndex = MP2T_PACKET_LENGTH$1,\n everything; // If there are bytes remaining from the last segment, prepend them to the\n // bytes that were pushed in\n\n if (bytesInBuffer) {\n everything = new Uint8Array(bytes.byteLength + bytesInBuffer);\n everything.set(buffer.subarray(0, bytesInBuffer));\n everything.set(bytes, bytesInBuffer);\n bytesInBuffer = 0;\n } else {\n everything = bytes;\n } // While we have enough data for a packet\n\n while (endIndex < everything.byteLength) {\n // Look for a pair of start and end sync bytes in the data..\n if (everything[startIndex] === SYNC_BYTE$1 && everything[endIndex] === SYNC_BYTE$1) {\n // We found a packet so emit it and jump one whole packet forward in\n // the stream\n this.trigger('data', everything.subarray(startIndex, endIndex));\n startIndex += MP2T_PACKET_LENGTH$1;\n endIndex += MP2T_PACKET_LENGTH$1;\n continue;\n } // If we get here, we have somehow become de-synchronized and we need to step\n // forward one byte at a time until we find a pair of sync bytes that denote\n // a packet\n\n startIndex++;\n endIndex++;\n } // If there was some data left over at the end of the segment that couldn't\n // possibly be a whole packet, keep it because it might be the start of a packet\n // that continues in the next segment\n\n if (startIndex < everything.byteLength) {\n buffer.set(everything.subarray(startIndex), 0);\n bytesInBuffer = everything.byteLength - startIndex;\n }\n };\n /**\n * Passes identified M2TS packets to the TransportParseStream to be parsed\n **/\n\n this.flush = function () {\n // If the buffer contains a whole packet when we are being flushed, emit it\n // and empty the buffer. Otherwise hold onto the data because it may be\n // important for decoding the next segment\n if (bytesInBuffer === MP2T_PACKET_LENGTH$1 && buffer[0] === SYNC_BYTE$1) {\n this.trigger('data', buffer);\n bytesInBuffer = 0;\n }\n this.trigger('done');\n };\n this.endTimeline = function () {\n this.flush();\n this.trigger('endedtimeline');\n };\n this.reset = function () {\n bytesInBuffer = 0;\n this.trigger('reset');\n };\n };\n TransportPacketStream.prototype = new Stream$4();\n /**\n * Accepts an MP2T TransportPacketStream and emits data events with parsed\n * forms of the individual transport stream packets.\n */\n\n TransportParseStream = function () {\n var parsePsi, parsePat, parsePmt, self;\n TransportParseStream.prototype.init.call(this);\n self = this;\n this.packetsWaitingForPmt = [];\n this.programMapTable = undefined;\n parsePsi = function (payload, psi) {\n var offset = 0; // PSI packets may be split into multiple sections and those\n // sections may be split into multiple packets. If a PSI\n // section starts in this packet, the payload_unit_start_indicator\n // will be true and the first byte of the payload will indicate\n // the offset from the current position to the start of the\n // section.\n\n if (psi.payloadUnitStartIndicator) {\n offset += payload[offset] + 1;\n }\n if (psi.type === 'pat') {\n parsePat(payload.subarray(offset), psi);\n } else {\n parsePmt(payload.subarray(offset), psi);\n }\n };\n parsePat = function (payload, pat) {\n pat.section_number = payload[7]; // eslint-disable-line camelcase\n\n pat.last_section_number = payload[8]; // eslint-disable-line camelcase\n // skip the PSI header and parse the first PMT entry\n\n self.pmtPid = (payload[10] & 0x1F) << 8 | payload[11];\n pat.pmtPid = self.pmtPid;\n };\n /**\n * Parse out the relevant fields of a Program Map Table (PMT).\n * @param payload {Uint8Array} the PMT-specific portion of an MP2T\n * packet. The first byte in this array should be the table_id\n * field.\n * @param pmt {object} the object that should be decorated with\n * fields parsed from the PMT.\n */\n\n parsePmt = function (payload, pmt) {\n var sectionLength, tableEnd, programInfoLength, offset; // PMTs can be sent ahead of the time when they should actually\n // take effect. We don't believe this should ever be the case\n // for HLS but we'll ignore \"forward\" PMT declarations if we see\n // them. Future PMT declarations have the current_next_indicator\n // set to zero.\n\n if (!(payload[5] & 0x01)) {\n return;\n } // overwrite any existing program map table\n\n self.programMapTable = {\n video: null,\n audio: null,\n 'timed-metadata': {}\n }; // the mapping table ends at the end of the current section\n\n sectionLength = (payload[1] & 0x0f) << 8 | payload[2];\n tableEnd = 3 + sectionLength - 4; // to determine where the table is, we have to figure out how\n // long the program info descriptors are\n\n programInfoLength = (payload[10] & 0x0f) << 8 | payload[11]; // advance the offset to the first entry in the mapping table\n\n offset = 12 + programInfoLength;\n while (offset < tableEnd) {\n var streamType = payload[offset];\n var pid = (payload[offset + 1] & 0x1F) << 8 | payload[offset + 2]; // only map a single elementary_pid for audio and video stream types\n // TODO: should this be done for metadata too? for now maintain behavior of\n // multiple metadata streams\n\n if (streamType === StreamTypes$2.H264_STREAM_TYPE && self.programMapTable.video === null) {\n self.programMapTable.video = pid;\n } else if (streamType === StreamTypes$2.ADTS_STREAM_TYPE && self.programMapTable.audio === null) {\n self.programMapTable.audio = pid;\n } else if (streamType === StreamTypes$2.METADATA_STREAM_TYPE) {\n // map pid to stream type for metadata streams\n self.programMapTable['timed-metadata'][pid] = streamType;\n } // move to the next table entry\n // skip past the elementary stream descriptors, if present\n\n offset += ((payload[offset + 3] & 0x0F) << 8 | payload[offset + 4]) + 5;\n } // record the map on the packet as well\n\n pmt.programMapTable = self.programMapTable;\n };\n /**\n * Deliver a new MP2T packet to the next stream in the pipeline.\n */\n\n this.push = function (packet) {\n var result = {},\n offset = 4;\n result.payloadUnitStartIndicator = !!(packet[1] & 0x40); // pid is a 13-bit field starting at the last bit of packet[1]\n\n result.pid = packet[1] & 0x1f;\n result.pid <<= 8;\n result.pid |= packet[2]; // if an adaption field is present, its length is specified by the\n // fifth byte of the TS packet header. The adaptation field is\n // used to add stuffing to PES packets that don't fill a complete\n // TS packet, and to specify some forms of timing and control data\n // that we do not currently use.\n\n if ((packet[3] & 0x30) >>> 4 > 0x01) {\n offset += packet[offset] + 1;\n } // parse the rest of the packet based on the type\n\n if (result.pid === 0) {\n result.type = 'pat';\n parsePsi(packet.subarray(offset), result);\n this.trigger('data', result);\n } else if (result.pid === this.pmtPid) {\n result.type = 'pmt';\n parsePsi(packet.subarray(offset), result);\n this.trigger('data', result); // if there are any packets waiting for a PMT to be found, process them now\n\n while (this.packetsWaitingForPmt.length) {\n this.processPes_.apply(this, this.packetsWaitingForPmt.shift());\n }\n } else if (this.programMapTable === undefined) {\n // When we have not seen a PMT yet, defer further processing of\n // PES packets until one has been parsed\n this.packetsWaitingForPmt.push([packet, offset, result]);\n } else {\n this.processPes_(packet, offset, result);\n }\n };\n this.processPes_ = function (packet, offset, result) {\n // set the appropriate stream type\n if (result.pid === this.programMapTable.video) {\n result.streamType = StreamTypes$2.H264_STREAM_TYPE;\n } else if (result.pid === this.programMapTable.audio) {\n result.streamType = StreamTypes$2.ADTS_STREAM_TYPE;\n } else {\n // if not video or audio, it is timed-metadata or unknown\n // if unknown, streamType will be undefined\n result.streamType = this.programMapTable['timed-metadata'][result.pid];\n }\n result.type = 'pes';\n result.data = packet.subarray(offset);\n this.trigger('data', result);\n };\n };\n TransportParseStream.prototype = new Stream$4();\n TransportParseStream.STREAM_TYPES = {\n h264: 0x1b,\n adts: 0x0f\n };\n /**\n * Reconsistutes program elementary stream (PES) packets from parsed\n * transport stream packets. That is, if you pipe an\n * mp2t.TransportParseStream into a mp2t.ElementaryStream, the output\n * events will be events which capture the bytes for individual PES\n * packets plus relevant metadata that has been extracted from the\n * container.\n */\n\n ElementaryStream = function () {\n var self = this,\n segmentHadPmt = false,\n // PES packet fragments\n video = {\n data: [],\n size: 0\n },\n audio = {\n data: [],\n size: 0\n },\n timedMetadata = {\n data: [],\n size: 0\n },\n programMapTable,\n parsePes = function (payload, pes) {\n var ptsDtsFlags;\n const startPrefix = payload[0] << 16 | payload[1] << 8 | payload[2]; // default to an empty array\n\n pes.data = new Uint8Array(); // In certain live streams, the start of a TS fragment has ts packets\n // that are frame data that is continuing from the previous fragment. This\n // is to check that the pes data is the start of a new pes payload\n\n if (startPrefix !== 1) {\n return;\n } // get the packet length, this will be 0 for video\n\n pes.packetLength = 6 + (payload[4] << 8 | payload[5]); // find out if this packets starts a new keyframe\n\n pes.dataAlignmentIndicator = (payload[6] & 0x04) !== 0; // PES packets may be annotated with a PTS value, or a PTS value\n // and a DTS value. Determine what combination of values is\n // available to work with.\n\n ptsDtsFlags = payload[7]; // PTS and DTS are normally stored as a 33-bit number. Javascript\n // performs all bitwise operations on 32-bit integers but javascript\n // supports a much greater range (52-bits) of integer using standard\n // mathematical operations.\n // We construct a 31-bit value using bitwise operators over the 31\n // most significant bits and then multiply by 4 (equal to a left-shift\n // of 2) before we add the final 2 least significant bits of the\n // timestamp (equal to an OR.)\n\n if (ptsDtsFlags & 0xC0) {\n // the PTS and DTS are not written out directly. For information\n // on how they are encoded, see\n // http://dvd.sourceforge.net/dvdinfo/pes-hdr.html\n pes.pts = (payload[9] & 0x0E) << 27 | (payload[10] & 0xFF) << 20 | (payload[11] & 0xFE) << 12 | (payload[12] & 0xFF) << 5 | (payload[13] & 0xFE) >>> 3;\n pes.pts *= 4; // Left shift by 2\n\n pes.pts += (payload[13] & 0x06) >>> 1; // OR by the two LSBs\n\n pes.dts = pes.pts;\n if (ptsDtsFlags & 0x40) {\n pes.dts = (payload[14] & 0x0E) << 27 | (payload[15] & 0xFF) << 20 | (payload[16] & 0xFE) << 12 | (payload[17] & 0xFF) << 5 | (payload[18] & 0xFE) >>> 3;\n pes.dts *= 4; // Left shift by 2\n\n pes.dts += (payload[18] & 0x06) >>> 1; // OR by the two LSBs\n }\n } // the data section starts immediately after the PES header.\n // pes_header_data_length specifies the number of header bytes\n // that follow the last byte of the field.\n\n pes.data = payload.subarray(9 + payload[8]);\n },\n /**\n * Pass completely parsed PES packets to the next stream in the pipeline\n **/\n flushStream = function (stream, type, forceFlush) {\n var packetData = new Uint8Array(stream.size),\n event = {\n type: type\n },\n i = 0,\n offset = 0,\n packetFlushable = false,\n fragment; // do nothing if there is not enough buffered data for a complete\n // PES header\n\n if (!stream.data.length || stream.size < 9) {\n return;\n }\n event.trackId = stream.data[0].pid; // reassemble the packet\n\n for (i = 0; i < stream.data.length; i++) {\n fragment = stream.data[i];\n packetData.set(fragment.data, offset);\n offset += fragment.data.byteLength;\n } // parse assembled packet's PES header\n\n parsePes(packetData, event); // non-video PES packets MUST have a non-zero PES_packet_length\n // check that there is enough stream data to fill the packet\n\n packetFlushable = type === 'video' || event.packetLength <= stream.size; // flush pending packets if the conditions are right\n\n if (forceFlush || packetFlushable) {\n stream.size = 0;\n stream.data.length = 0;\n } // only emit packets that are complete. this is to avoid assembling\n // incomplete PES packets due to poor segmentation\n\n if (packetFlushable) {\n self.trigger('data', event);\n }\n };\n ElementaryStream.prototype.init.call(this);\n /**\n * Identifies M2TS packet types and parses PES packets using metadata\n * parsed from the PMT\n **/\n\n this.push = function (data) {\n ({\n pat: function () {// we have to wait for the PMT to arrive as well before we\n // have any meaningful metadata\n },\n pes: function () {\n var stream, streamType;\n switch (data.streamType) {\n case StreamTypes$2.H264_STREAM_TYPE:\n stream = video;\n streamType = 'video';\n break;\n case StreamTypes$2.ADTS_STREAM_TYPE:\n stream = audio;\n streamType = 'audio';\n break;\n case StreamTypes$2.METADATA_STREAM_TYPE:\n stream = timedMetadata;\n streamType = 'timed-metadata';\n break;\n default:\n // ignore unknown stream types\n return;\n } // if a new packet is starting, we can flush the completed\n // packet\n\n if (data.payloadUnitStartIndicator) {\n flushStream(stream, streamType, true);\n } // buffer this fragment until we are sure we've received the\n // complete payload\n\n stream.data.push(data);\n stream.size += data.data.byteLength;\n },\n pmt: function () {\n var event = {\n type: 'metadata',\n tracks: []\n };\n programMapTable = data.programMapTable; // translate audio and video streams to tracks\n\n if (programMapTable.video !== null) {\n event.tracks.push({\n timelineStartInfo: {\n baseMediaDecodeTime: 0\n },\n id: +programMapTable.video,\n codec: 'avc',\n type: 'video'\n });\n }\n if (programMapTable.audio !== null) {\n event.tracks.push({\n timelineStartInfo: {\n baseMediaDecodeTime: 0\n },\n id: +programMapTable.audio,\n codec: 'adts',\n type: 'audio'\n });\n }\n segmentHadPmt = true;\n self.trigger('data', event);\n }\n })[data.type]();\n };\n this.reset = function () {\n video.size = 0;\n video.data.length = 0;\n audio.size = 0;\n audio.data.length = 0;\n this.trigger('reset');\n };\n /**\n * Flush any remaining input. Video PES packets may be of variable\n * length. Normally, the start of a new video packet can trigger the\n * finalization of the previous packet. That is not possible if no\n * more video is forthcoming, however. In that case, some other\n * mechanism (like the end of the file) has to be employed. When it is\n * clear that no additional data is forthcoming, calling this method\n * will flush the buffered packets.\n */\n\n this.flushStreams_ = function () {\n // !!THIS ORDER IS IMPORTANT!!\n // video first then audio\n flushStream(video, 'video');\n flushStream(audio, 'audio');\n flushStream(timedMetadata, 'timed-metadata');\n };\n this.flush = function () {\n // if on flush we haven't had a pmt emitted\n // and we have a pmt to emit. emit the pmt\n // so that we trigger a trackinfo downstream.\n if (!segmentHadPmt && programMapTable) {\n var pmt = {\n type: 'metadata',\n tracks: []\n }; // translate audio and video streams to tracks\n\n if (programMapTable.video !== null) {\n pmt.tracks.push({\n timelineStartInfo: {\n baseMediaDecodeTime: 0\n },\n id: +programMapTable.video,\n codec: 'avc',\n type: 'video'\n });\n }\n if (programMapTable.audio !== null) {\n pmt.tracks.push({\n timelineStartInfo: {\n baseMediaDecodeTime: 0\n },\n id: +programMapTable.audio,\n codec: 'adts',\n type: 'audio'\n });\n }\n self.trigger('data', pmt);\n }\n segmentHadPmt = false;\n this.flushStreams_();\n this.trigger('done');\n };\n };\n ElementaryStream.prototype = new Stream$4();\n var m2ts$1 = {\n PAT_PID: 0x0000,\n MP2T_PACKET_LENGTH: MP2T_PACKET_LENGTH$1,\n TransportPacketStream: TransportPacketStream,\n TransportParseStream: TransportParseStream,\n ElementaryStream: ElementaryStream,\n TimestampRolloverStream: TimestampRolloverStream,\n CaptionStream: CaptionStream$1.CaptionStream,\n Cea608Stream: CaptionStream$1.Cea608Stream,\n Cea708Stream: CaptionStream$1.Cea708Stream,\n MetadataStream: metadataStream\n };\n for (var type in StreamTypes$2) {\n if (StreamTypes$2.hasOwnProperty(type)) {\n m2ts$1[type] = StreamTypes$2[type];\n }\n }\n var m2ts_1 = m2ts$1;\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n */\n\n var Stream$3 = stream;\n var ONE_SECOND_IN_TS$2 = clock$2.ONE_SECOND_IN_TS;\n var AdtsStream$1;\n var ADTS_SAMPLING_FREQUENCIES$1 = [96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 7350];\n /*\n * Accepts a ElementaryStream and emits data events with parsed\n * AAC Audio Frames of the individual packets. Input audio in ADTS\n * format is unpacked and re-emitted as AAC frames.\n *\n * @see http://wiki.multimedia.cx/index.php?title=ADTS\n * @see http://wiki.multimedia.cx/?title=Understanding_AAC\n */\n\n AdtsStream$1 = function (handlePartialSegments) {\n var buffer,\n frameNum = 0;\n AdtsStream$1.prototype.init.call(this);\n this.skipWarn_ = function (start, end) {\n this.trigger('log', {\n level: 'warn',\n message: `adts skiping bytes ${start} to ${end} in frame ${frameNum} outside syncword`\n });\n };\n this.push = function (packet) {\n var i = 0,\n frameLength,\n protectionSkipBytes,\n oldBuffer,\n sampleCount,\n adtsFrameDuration;\n if (!handlePartialSegments) {\n frameNum = 0;\n }\n if (packet.type !== 'audio') {\n // ignore non-audio data\n return;\n } // Prepend any data in the buffer to the input data so that we can parse\n // aac frames the cross a PES packet boundary\n\n if (buffer && buffer.length) {\n oldBuffer = buffer;\n buffer = new Uint8Array(oldBuffer.byteLength + packet.data.byteLength);\n buffer.set(oldBuffer);\n buffer.set(packet.data, oldBuffer.byteLength);\n } else {\n buffer = packet.data;\n } // unpack any ADTS frames which have been fully received\n // for details on the ADTS header, see http://wiki.multimedia.cx/index.php?title=ADTS\n\n var skip; // We use i + 7 here because we want to be able to parse the entire header.\n // If we don't have enough bytes to do that, then we definitely won't have a full frame.\n\n while (i + 7 < buffer.length) {\n // Look for the start of an ADTS header..\n if (buffer[i] !== 0xFF || (buffer[i + 1] & 0xF6) !== 0xF0) {\n if (typeof skip !== 'number') {\n skip = i;\n } // If a valid header was not found, jump one forward and attempt to\n // find a valid ADTS header starting at the next byte\n\n i++;\n continue;\n }\n if (typeof skip === 'number') {\n this.skipWarn_(skip, i);\n skip = null;\n } // The protection skip bit tells us if we have 2 bytes of CRC data at the\n // end of the ADTS header\n\n protectionSkipBytes = (~buffer[i + 1] & 0x01) * 2; // Frame length is a 13 bit integer starting 16 bits from the\n // end of the sync sequence\n // NOTE: frame length includes the size of the header\n\n frameLength = (buffer[i + 3] & 0x03) << 11 | buffer[i + 4] << 3 | (buffer[i + 5] & 0xe0) >> 5;\n sampleCount = ((buffer[i + 6] & 0x03) + 1) * 1024;\n adtsFrameDuration = sampleCount * ONE_SECOND_IN_TS$2 / ADTS_SAMPLING_FREQUENCIES$1[(buffer[i + 2] & 0x3c) >>> 2]; // If we don't have enough data to actually finish this ADTS frame,\n // then we have to wait for more data\n\n if (buffer.byteLength - i < frameLength) {\n break;\n } // Otherwise, deliver the complete AAC frame\n\n this.trigger('data', {\n pts: packet.pts + frameNum * adtsFrameDuration,\n dts: packet.dts + frameNum * adtsFrameDuration,\n sampleCount: sampleCount,\n audioobjecttype: (buffer[i + 2] >>> 6 & 0x03) + 1,\n channelcount: (buffer[i + 2] & 1) << 2 | (buffer[i + 3] & 0xc0) >>> 6,\n samplerate: ADTS_SAMPLING_FREQUENCIES$1[(buffer[i + 2] & 0x3c) >>> 2],\n samplingfrequencyindex: (buffer[i + 2] & 0x3c) >>> 2,\n // assume ISO/IEC 14496-12 AudioSampleEntry default of 16\n samplesize: 16,\n // data is the frame without it's header\n data: buffer.subarray(i + 7 + protectionSkipBytes, i + frameLength)\n });\n frameNum++;\n i += frameLength;\n }\n if (typeof skip === 'number') {\n this.skipWarn_(skip, i);\n skip = null;\n } // remove processed bytes from the buffer.\n\n buffer = buffer.subarray(i);\n };\n this.flush = function () {\n frameNum = 0;\n this.trigger('done');\n };\n this.reset = function () {\n buffer = void 0;\n this.trigger('reset');\n };\n this.endTimeline = function () {\n buffer = void 0;\n this.trigger('endedtimeline');\n };\n };\n AdtsStream$1.prototype = new Stream$3();\n var adts = AdtsStream$1;\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n */\n\n var ExpGolomb$1;\n /**\n * Parser for exponential Golomb codes, a variable-bitwidth number encoding\n * scheme used by h264.\n */\n\n ExpGolomb$1 = function (workingData) {\n var\n // the number of bytes left to examine in workingData\n workingBytesAvailable = workingData.byteLength,\n // the current word being examined\n workingWord = 0,\n // :uint\n // the number of bits left to examine in the current word\n workingBitsAvailable = 0; // :uint;\n // ():uint\n\n this.length = function () {\n return 8 * workingBytesAvailable;\n }; // ():uint\n\n this.bitsAvailable = function () {\n return 8 * workingBytesAvailable + workingBitsAvailable;\n }; // ():void\n\n this.loadWord = function () {\n var position = workingData.byteLength - workingBytesAvailable,\n workingBytes = new Uint8Array(4),\n availableBytes = Math.min(4, workingBytesAvailable);\n if (availableBytes === 0) {\n throw new Error('no bytes available');\n }\n workingBytes.set(workingData.subarray(position, position + availableBytes));\n workingWord = new DataView(workingBytes.buffer).getUint32(0); // track the amount of workingData that has been processed\n\n workingBitsAvailable = availableBytes * 8;\n workingBytesAvailable -= availableBytes;\n }; // (count:int):void\n\n this.skipBits = function (count) {\n var skipBytes; // :int\n\n if (workingBitsAvailable > count) {\n workingWord <<= count;\n workingBitsAvailable -= count;\n } else {\n count -= workingBitsAvailable;\n skipBytes = Math.floor(count / 8);\n count -= skipBytes * 8;\n workingBytesAvailable -= skipBytes;\n this.loadWord();\n workingWord <<= count;\n workingBitsAvailable -= count;\n }\n }; // (size:int):uint\n\n this.readBits = function (size) {\n var bits = Math.min(workingBitsAvailable, size),\n // :uint\n valu = workingWord >>> 32 - bits; // :uint\n // if size > 31, handle error\n\n workingBitsAvailable -= bits;\n if (workingBitsAvailable > 0) {\n workingWord <<= bits;\n } else if (workingBytesAvailable > 0) {\n this.loadWord();\n }\n bits = size - bits;\n if (bits > 0) {\n return valu << bits | this.readBits(bits);\n }\n return valu;\n }; // ():uint\n\n this.skipLeadingZeros = function () {\n var leadingZeroCount; // :uint\n\n for (leadingZeroCount = 0; leadingZeroCount < workingBitsAvailable; ++leadingZeroCount) {\n if ((workingWord & 0x80000000 >>> leadingZeroCount) !== 0) {\n // the first bit of working word is 1\n workingWord <<= leadingZeroCount;\n workingBitsAvailable -= leadingZeroCount;\n return leadingZeroCount;\n }\n } // we exhausted workingWord and still have not found a 1\n\n this.loadWord();\n return leadingZeroCount + this.skipLeadingZeros();\n }; // ():void\n\n this.skipUnsignedExpGolomb = function () {\n this.skipBits(1 + this.skipLeadingZeros());\n }; // ():void\n\n this.skipExpGolomb = function () {\n this.skipBits(1 + this.skipLeadingZeros());\n }; // ():uint\n\n this.readUnsignedExpGolomb = function () {\n var clz = this.skipLeadingZeros(); // :uint\n\n return this.readBits(clz + 1) - 1;\n }; // ():int\n\n this.readExpGolomb = function () {\n var valu = this.readUnsignedExpGolomb(); // :int\n\n if (0x01 & valu) {\n // the number is odd if the low order bit is set\n return 1 + valu >>> 1; // add 1 to make it even, and divide by 2\n }\n\n return -1 * (valu >>> 1); // divide by two then make it negative\n }; // Some convenience functions\n // :Boolean\n\n this.readBoolean = function () {\n return this.readBits(1) === 1;\n }; // ():int\n\n this.readUnsignedByte = function () {\n return this.readBits(8);\n };\n this.loadWord();\n };\n var expGolomb = ExpGolomb$1;\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n */\n\n var Stream$2 = stream;\n var ExpGolomb = expGolomb;\n var H264Stream$1, NalByteStream;\n var PROFILES_WITH_OPTIONAL_SPS_DATA;\n /**\n * Accepts a NAL unit byte stream and unpacks the embedded NAL units.\n */\n\n NalByteStream = function () {\n var syncPoint = 0,\n i,\n buffer;\n NalByteStream.prototype.init.call(this);\n /*\n * Scans a byte stream and triggers a data event with the NAL units found.\n * @param {Object} data Event received from H264Stream\n * @param {Uint8Array} data.data The h264 byte stream to be scanned\n *\n * @see H264Stream.push\n */\n\n this.push = function (data) {\n var swapBuffer;\n if (!buffer) {\n buffer = data.data;\n } else {\n swapBuffer = new Uint8Array(buffer.byteLength + data.data.byteLength);\n swapBuffer.set(buffer);\n swapBuffer.set(data.data, buffer.byteLength);\n buffer = swapBuffer;\n }\n var len = buffer.byteLength; // Rec. ITU-T H.264, Annex B\n // scan for NAL unit boundaries\n // a match looks like this:\n // 0 0 1 .. NAL .. 0 0 1\n // ^ sync point ^ i\n // or this:\n // 0 0 1 .. NAL .. 0 0 0\n // ^ sync point ^ i\n // advance the sync point to a NAL start, if necessary\n\n for (; syncPoint < len - 3; syncPoint++) {\n if (buffer[syncPoint + 2] === 1) {\n // the sync point is properly aligned\n i = syncPoint + 5;\n break;\n }\n }\n while (i < len) {\n // look at the current byte to determine if we've hit the end of\n // a NAL unit boundary\n switch (buffer[i]) {\n case 0:\n // skip past non-sync sequences\n if (buffer[i - 1] !== 0) {\n i += 2;\n break;\n } else if (buffer[i - 2] !== 0) {\n i++;\n break;\n } // deliver the NAL unit if it isn't empty\n\n if (syncPoint + 3 !== i - 2) {\n this.trigger('data', buffer.subarray(syncPoint + 3, i - 2));\n } // drop trailing zeroes\n\n do {\n i++;\n } while (buffer[i] !== 1 && i < len);\n syncPoint = i - 2;\n i += 3;\n break;\n case 1:\n // skip past non-sync sequences\n if (buffer[i - 1] !== 0 || buffer[i - 2] !== 0) {\n i += 3;\n break;\n } // deliver the NAL unit\n\n this.trigger('data', buffer.subarray(syncPoint + 3, i - 2));\n syncPoint = i - 2;\n i += 3;\n break;\n default:\n // the current byte isn't a one or zero, so it cannot be part\n // of a sync sequence\n i += 3;\n break;\n }\n } // filter out the NAL units that were delivered\n\n buffer = buffer.subarray(syncPoint);\n i -= syncPoint;\n syncPoint = 0;\n };\n this.reset = function () {\n buffer = null;\n syncPoint = 0;\n this.trigger('reset');\n };\n this.flush = function () {\n // deliver the last buffered NAL unit\n if (buffer && buffer.byteLength > 3) {\n this.trigger('data', buffer.subarray(syncPoint + 3));\n } // reset the stream state\n\n buffer = null;\n syncPoint = 0;\n this.trigger('done');\n };\n this.endTimeline = function () {\n this.flush();\n this.trigger('endedtimeline');\n };\n };\n NalByteStream.prototype = new Stream$2(); // values of profile_idc that indicate additional fields are included in the SPS\n // see Recommendation ITU-T H.264 (4/2013),\n // 7.3.2.1.1 Sequence parameter set data syntax\n\n PROFILES_WITH_OPTIONAL_SPS_DATA = {\n 100: true,\n 110: true,\n 122: true,\n 244: true,\n 44: true,\n 83: true,\n 86: true,\n 118: true,\n 128: true,\n // TODO: the three profiles below don't\n // appear to have sps data in the specificiation anymore?\n 138: true,\n 139: true,\n 134: true\n };\n /**\n * Accepts input from a ElementaryStream and produces H.264 NAL unit data\n * events.\n */\n\n H264Stream$1 = function () {\n var nalByteStream = new NalByteStream(),\n self,\n trackId,\n currentPts,\n currentDts,\n discardEmulationPreventionBytes,\n readSequenceParameterSet,\n skipScalingList;\n H264Stream$1.prototype.init.call(this);\n self = this;\n /*\n * Pushes a packet from a stream onto the NalByteStream\n *\n * @param {Object} packet - A packet received from a stream\n * @param {Uint8Array} packet.data - The raw bytes of the packet\n * @param {Number} packet.dts - Decode timestamp of the packet\n * @param {Number} packet.pts - Presentation timestamp of the packet\n * @param {Number} packet.trackId - The id of the h264 track this packet came from\n * @param {('video'|'audio')} packet.type - The type of packet\n *\n */\n\n this.push = function (packet) {\n if (packet.type !== 'video') {\n return;\n }\n trackId = packet.trackId;\n currentPts = packet.pts;\n currentDts = packet.dts;\n nalByteStream.push(packet);\n };\n /*\n * Identify NAL unit types and pass on the NALU, trackId, presentation and decode timestamps\n * for the NALUs to the next stream component.\n * Also, preprocess caption and sequence parameter NALUs.\n *\n * @param {Uint8Array} data - A NAL unit identified by `NalByteStream.push`\n * @see NalByteStream.push\n */\n\n nalByteStream.on('data', function (data) {\n var event = {\n trackId: trackId,\n pts: currentPts,\n dts: currentDts,\n data: data,\n nalUnitTypeCode: data[0] & 0x1f\n };\n switch (event.nalUnitTypeCode) {\n case 0x05:\n event.nalUnitType = 'slice_layer_without_partitioning_rbsp_idr';\n break;\n case 0x06:\n event.nalUnitType = 'sei_rbsp';\n event.escapedRBSP = discardEmulationPreventionBytes(data.subarray(1));\n break;\n case 0x07:\n event.nalUnitType = 'seq_parameter_set_rbsp';\n event.escapedRBSP = discardEmulationPreventionBytes(data.subarray(1));\n event.config = readSequenceParameterSet(event.escapedRBSP);\n break;\n case 0x08:\n event.nalUnitType = 'pic_parameter_set_rbsp';\n break;\n case 0x09:\n event.nalUnitType = 'access_unit_delimiter_rbsp';\n break;\n } // This triggers data on the H264Stream\n\n self.trigger('data', event);\n });\n nalByteStream.on('done', function () {\n self.trigger('done');\n });\n nalByteStream.on('partialdone', function () {\n self.trigger('partialdone');\n });\n nalByteStream.on('reset', function () {\n self.trigger('reset');\n });\n nalByteStream.on('endedtimeline', function () {\n self.trigger('endedtimeline');\n });\n this.flush = function () {\n nalByteStream.flush();\n };\n this.partialFlush = function () {\n nalByteStream.partialFlush();\n };\n this.reset = function () {\n nalByteStream.reset();\n };\n this.endTimeline = function () {\n nalByteStream.endTimeline();\n };\n /**\n * Advance the ExpGolomb decoder past a scaling list. The scaling\n * list is optionally transmitted as part of a sequence parameter\n * set and is not relevant to transmuxing.\n * @param count {number} the number of entries in this scaling list\n * @param expGolombDecoder {object} an ExpGolomb pointed to the\n * start of a scaling list\n * @see Recommendation ITU-T H.264, Section 7.3.2.1.1.1\n */\n\n skipScalingList = function (count, expGolombDecoder) {\n var lastScale = 8,\n nextScale = 8,\n j,\n deltaScale;\n for (j = 0; j < count; j++) {\n if (nextScale !== 0) {\n deltaScale = expGolombDecoder.readExpGolomb();\n nextScale = (lastScale + deltaScale + 256) % 256;\n }\n lastScale = nextScale === 0 ? lastScale : nextScale;\n }\n };\n /**\n * Expunge any \"Emulation Prevention\" bytes from a \"Raw Byte\n * Sequence Payload\"\n * @param data {Uint8Array} the bytes of a RBSP from a NAL\n * unit\n * @return {Uint8Array} the RBSP without any Emulation\n * Prevention Bytes\n */\n\n discardEmulationPreventionBytes = function (data) {\n var length = data.byteLength,\n emulationPreventionBytesPositions = [],\n i = 1,\n newLength,\n newData; // Find all `Emulation Prevention Bytes`\n\n while (i < length - 2) {\n if (data[i] === 0 && data[i + 1] === 0 && data[i + 2] === 0x03) {\n emulationPreventionBytesPositions.push(i + 2);\n i += 2;\n } else {\n i++;\n }\n } // If no Emulation Prevention Bytes were found just return the original\n // array\n\n if (emulationPreventionBytesPositions.length === 0) {\n return data;\n } // Create a new array to hold the NAL unit data\n\n newLength = length - emulationPreventionBytesPositions.length;\n newData = new Uint8Array(newLength);\n var sourceIndex = 0;\n for (i = 0; i < newLength; sourceIndex++, i++) {\n if (sourceIndex === emulationPreventionBytesPositions[0]) {\n // Skip this byte\n sourceIndex++; // Remove this position index\n\n emulationPreventionBytesPositions.shift();\n }\n newData[i] = data[sourceIndex];\n }\n return newData;\n };\n /**\n * Read a sequence parameter set and return some interesting video\n * properties. A sequence parameter set is the H264 metadata that\n * describes the properties of upcoming video frames.\n * @param data {Uint8Array} the bytes of a sequence parameter set\n * @return {object} an object with configuration parsed from the\n * sequence parameter set, including the dimensions of the\n * associated video frames.\n */\n\n readSequenceParameterSet = function (data) {\n var frameCropLeftOffset = 0,\n frameCropRightOffset = 0,\n frameCropTopOffset = 0,\n frameCropBottomOffset = 0,\n expGolombDecoder,\n profileIdc,\n levelIdc,\n profileCompatibility,\n chromaFormatIdc,\n picOrderCntType,\n numRefFramesInPicOrderCntCycle,\n picWidthInMbsMinus1,\n picHeightInMapUnitsMinus1,\n frameMbsOnlyFlag,\n scalingListCount,\n sarRatio = [1, 1],\n aspectRatioIdc,\n i;\n expGolombDecoder = new ExpGolomb(data);\n profileIdc = expGolombDecoder.readUnsignedByte(); // profile_idc\n\n profileCompatibility = expGolombDecoder.readUnsignedByte(); // constraint_set[0-5]_flag\n\n levelIdc = expGolombDecoder.readUnsignedByte(); // level_idc u(8)\n\n expGolombDecoder.skipUnsignedExpGolomb(); // seq_parameter_set_id\n // some profiles have more optional data we don't need\n\n if (PROFILES_WITH_OPTIONAL_SPS_DATA[profileIdc]) {\n chromaFormatIdc = expGolombDecoder.readUnsignedExpGolomb();\n if (chromaFormatIdc === 3) {\n expGolombDecoder.skipBits(1); // separate_colour_plane_flag\n }\n\n expGolombDecoder.skipUnsignedExpGolomb(); // bit_depth_luma_minus8\n\n expGolombDecoder.skipUnsignedExpGolomb(); // bit_depth_chroma_minus8\n\n expGolombDecoder.skipBits(1); // qpprime_y_zero_transform_bypass_flag\n\n if (expGolombDecoder.readBoolean()) {\n // seq_scaling_matrix_present_flag\n scalingListCount = chromaFormatIdc !== 3 ? 8 : 12;\n for (i = 0; i < scalingListCount; i++) {\n if (expGolombDecoder.readBoolean()) {\n // seq_scaling_list_present_flag[ i ]\n if (i < 6) {\n skipScalingList(16, expGolombDecoder);\n } else {\n skipScalingList(64, expGolombDecoder);\n }\n }\n }\n }\n }\n expGolombDecoder.skipUnsignedExpGolomb(); // log2_max_frame_num_minus4\n\n picOrderCntType = expGolombDecoder.readUnsignedExpGolomb();\n if (picOrderCntType === 0) {\n expGolombDecoder.readUnsignedExpGolomb(); // log2_max_pic_order_cnt_lsb_minus4\n } else if (picOrderCntType === 1) {\n expGolombDecoder.skipBits(1); // delta_pic_order_always_zero_flag\n\n expGolombDecoder.skipExpGolomb(); // offset_for_non_ref_pic\n\n expGolombDecoder.skipExpGolomb(); // offset_for_top_to_bottom_field\n\n numRefFramesInPicOrderCntCycle = expGolombDecoder.readUnsignedExpGolomb();\n for (i = 0; i < numRefFramesInPicOrderCntCycle; i++) {\n expGolombDecoder.skipExpGolomb(); // offset_for_ref_frame[ i ]\n }\n }\n\n expGolombDecoder.skipUnsignedExpGolomb(); // max_num_ref_frames\n\n expGolombDecoder.skipBits(1); // gaps_in_frame_num_value_allowed_flag\n\n picWidthInMbsMinus1 = expGolombDecoder.readUnsignedExpGolomb();\n picHeightInMapUnitsMinus1 = expGolombDecoder.readUnsignedExpGolomb();\n frameMbsOnlyFlag = expGolombDecoder.readBits(1);\n if (frameMbsOnlyFlag === 0) {\n expGolombDecoder.skipBits(1); // mb_adaptive_frame_field_flag\n }\n\n expGolombDecoder.skipBits(1); // direct_8x8_inference_flag\n\n if (expGolombDecoder.readBoolean()) {\n // frame_cropping_flag\n frameCropLeftOffset = expGolombDecoder.readUnsignedExpGolomb();\n frameCropRightOffset = expGolombDecoder.readUnsignedExpGolomb();\n frameCropTopOffset = expGolombDecoder.readUnsignedExpGolomb();\n frameCropBottomOffset = expGolombDecoder.readUnsignedExpGolomb();\n }\n if (expGolombDecoder.readBoolean()) {\n // vui_parameters_present_flag\n if (expGolombDecoder.readBoolean()) {\n // aspect_ratio_info_present_flag\n aspectRatioIdc = expGolombDecoder.readUnsignedByte();\n switch (aspectRatioIdc) {\n case 1:\n sarRatio = [1, 1];\n break;\n case 2:\n sarRatio = [12, 11];\n break;\n case 3:\n sarRatio = [10, 11];\n break;\n case 4:\n sarRatio = [16, 11];\n break;\n case 5:\n sarRatio = [40, 33];\n break;\n case 6:\n sarRatio = [24, 11];\n break;\n case 7:\n sarRatio = [20, 11];\n break;\n case 8:\n sarRatio = [32, 11];\n break;\n case 9:\n sarRatio = [80, 33];\n break;\n case 10:\n sarRatio = [18, 11];\n break;\n case 11:\n sarRatio = [15, 11];\n break;\n case 12:\n sarRatio = [64, 33];\n break;\n case 13:\n sarRatio = [160, 99];\n break;\n case 14:\n sarRatio = [4, 3];\n break;\n case 15:\n sarRatio = [3, 2];\n break;\n case 16:\n sarRatio = [2, 1];\n break;\n case 255:\n {\n sarRatio = [expGolombDecoder.readUnsignedByte() << 8 | expGolombDecoder.readUnsignedByte(), expGolombDecoder.readUnsignedByte() << 8 | expGolombDecoder.readUnsignedByte()];\n break;\n }\n }\n if (sarRatio) {\n sarRatio[0] / sarRatio[1];\n }\n }\n }\n return {\n profileIdc: profileIdc,\n levelIdc: levelIdc,\n profileCompatibility: profileCompatibility,\n width: (picWidthInMbsMinus1 + 1) * 16 - frameCropLeftOffset * 2 - frameCropRightOffset * 2,\n height: (2 - frameMbsOnlyFlag) * (picHeightInMapUnitsMinus1 + 1) * 16 - frameCropTopOffset * 2 - frameCropBottomOffset * 2,\n // sar is sample aspect ratio\n sarRatio: sarRatio\n };\n };\n };\n H264Stream$1.prototype = new Stream$2();\n var h264 = {\n H264Stream: H264Stream$1,\n NalByteStream: NalByteStream\n };\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * Utilities to detect basic properties and metadata about Aac data.\n */\n\n var ADTS_SAMPLING_FREQUENCIES = [96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 7350];\n var parseId3TagSize = function (header, byteIndex) {\n var returnSize = header[byteIndex + 6] << 21 | header[byteIndex + 7] << 14 | header[byteIndex + 8] << 7 | header[byteIndex + 9],\n flags = header[byteIndex + 5],\n footerPresent = (flags & 16) >> 4; // if we get a negative returnSize clamp it to 0\n\n returnSize = returnSize >= 0 ? returnSize : 0;\n if (footerPresent) {\n return returnSize + 20;\n }\n return returnSize + 10;\n };\n var getId3Offset = function (data, offset) {\n if (data.length - offset < 10 || data[offset] !== 'I'.charCodeAt(0) || data[offset + 1] !== 'D'.charCodeAt(0) || data[offset + 2] !== '3'.charCodeAt(0)) {\n return offset;\n }\n offset += parseId3TagSize(data, offset);\n return getId3Offset(data, offset);\n }; // TODO: use vhs-utils\n\n var isLikelyAacData$1 = function (data) {\n var offset = getId3Offset(data, 0);\n return data.length >= offset + 2 && (data[offset] & 0xFF) === 0xFF && (data[offset + 1] & 0xF0) === 0xF0 &&\n // verify that the 2 layer bits are 0, aka this\n // is not mp3 data but aac data.\n (data[offset + 1] & 0x16) === 0x10;\n };\n var parseSyncSafeInteger = function (data) {\n return data[0] << 21 | data[1] << 14 | data[2] << 7 | data[3];\n }; // return a percent-encoded representation of the specified byte range\n // @see http://en.wikipedia.org/wiki/Percent-encoding\n\n var percentEncode = function (bytes, start, end) {\n var i,\n result = '';\n for (i = start; i < end; i++) {\n result += '%' + ('00' + bytes[i].toString(16)).slice(-2);\n }\n return result;\n }; // return the string representation of the specified byte range,\n // interpreted as ISO-8859-1.\n\n var parseIso88591 = function (bytes, start, end) {\n return unescape(percentEncode(bytes, start, end)); // jshint ignore:line\n };\n\n var parseAdtsSize = function (header, byteIndex) {\n var lowThree = (header[byteIndex + 5] & 0xE0) >> 5,\n middle = header[byteIndex + 4] << 3,\n highTwo = header[byteIndex + 3] & 0x3 << 11;\n return highTwo | middle | lowThree;\n };\n var parseType$4 = function (header, byteIndex) {\n if (header[byteIndex] === 'I'.charCodeAt(0) && header[byteIndex + 1] === 'D'.charCodeAt(0) && header[byteIndex + 2] === '3'.charCodeAt(0)) {\n return 'timed-metadata';\n } else if (header[byteIndex] & 0xff === 0xff && (header[byteIndex + 1] & 0xf0) === 0xf0) {\n return 'audio';\n }\n return null;\n };\n var parseSampleRate = function (packet) {\n var i = 0;\n while (i + 5 < packet.length) {\n if (packet[i] !== 0xFF || (packet[i + 1] & 0xF6) !== 0xF0) {\n // If a valid header was not found, jump one forward and attempt to\n // find a valid ADTS header starting at the next byte\n i++;\n continue;\n }\n return ADTS_SAMPLING_FREQUENCIES[(packet[i + 2] & 0x3c) >>> 2];\n }\n return null;\n };\n var parseAacTimestamp = function (packet) {\n var frameStart, frameSize, frame, frameHeader; // find the start of the first frame and the end of the tag\n\n frameStart = 10;\n if (packet[5] & 0x40) {\n // advance the frame start past the extended header\n frameStart += 4; // header size field\n\n frameStart += parseSyncSafeInteger(packet.subarray(10, 14));\n } // parse one or more ID3 frames\n // http://id3.org/id3v2.3.0#ID3v2_frame_overview\n\n do {\n // determine the number of bytes in this frame\n frameSize = parseSyncSafeInteger(packet.subarray(frameStart + 4, frameStart + 8));\n if (frameSize < 1) {\n return null;\n }\n frameHeader = String.fromCharCode(packet[frameStart], packet[frameStart + 1], packet[frameStart + 2], packet[frameStart + 3]);\n if (frameHeader === 'PRIV') {\n frame = packet.subarray(frameStart + 10, frameStart + frameSize + 10);\n for (var i = 0; i < frame.byteLength; i++) {\n if (frame[i] === 0) {\n var owner = parseIso88591(frame, 0, i);\n if (owner === 'com.apple.streaming.transportStreamTimestamp') {\n var d = frame.subarray(i + 1);\n var size = (d[3] & 0x01) << 30 | d[4] << 22 | d[5] << 14 | d[6] << 6 | d[7] >>> 2;\n size *= 4;\n size += d[7] & 0x03;\n return size;\n }\n break;\n }\n }\n }\n frameStart += 10; // advance past the frame header\n\n frameStart += frameSize; // advance past the frame body\n } while (frameStart < packet.byteLength);\n return null;\n };\n var utils = {\n isLikelyAacData: isLikelyAacData$1,\n parseId3TagSize: parseId3TagSize,\n parseAdtsSize: parseAdtsSize,\n parseType: parseType$4,\n parseSampleRate: parseSampleRate,\n parseAacTimestamp: parseAacTimestamp\n };\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * A stream-based aac to mp4 converter. This utility can be used to\n * deliver mp4s to a SourceBuffer on platforms that support native\n * Media Source Extensions.\n */\n\n var Stream$1 = stream;\n var aacUtils = utils; // Constants\n\n var AacStream$1;\n /**\n * Splits an incoming stream of binary data into ADTS and ID3 Frames.\n */\n\n AacStream$1 = function () {\n var everything = new Uint8Array(),\n timeStamp = 0;\n AacStream$1.prototype.init.call(this);\n this.setTimestamp = function (timestamp) {\n timeStamp = timestamp;\n };\n this.push = function (bytes) {\n var frameSize = 0,\n byteIndex = 0,\n bytesLeft,\n chunk,\n packet,\n tempLength; // If there are bytes remaining from the last segment, prepend them to the\n // bytes that were pushed in\n\n if (everything.length) {\n tempLength = everything.length;\n everything = new Uint8Array(bytes.byteLength + tempLength);\n everything.set(everything.subarray(0, tempLength));\n everything.set(bytes, tempLength);\n } else {\n everything = bytes;\n }\n while (everything.length - byteIndex >= 3) {\n if (everything[byteIndex] === 'I'.charCodeAt(0) && everything[byteIndex + 1] === 'D'.charCodeAt(0) && everything[byteIndex + 2] === '3'.charCodeAt(0)) {\n // Exit early because we don't have enough to parse\n // the ID3 tag header\n if (everything.length - byteIndex < 10) {\n break;\n } // check framesize\n\n frameSize = aacUtils.parseId3TagSize(everything, byteIndex); // Exit early if we don't have enough in the buffer\n // to emit a full packet\n // Add to byteIndex to support multiple ID3 tags in sequence\n\n if (byteIndex + frameSize > everything.length) {\n break;\n }\n chunk = {\n type: 'timed-metadata',\n data: everything.subarray(byteIndex, byteIndex + frameSize)\n };\n this.trigger('data', chunk);\n byteIndex += frameSize;\n continue;\n } else if ((everything[byteIndex] & 0xff) === 0xff && (everything[byteIndex + 1] & 0xf0) === 0xf0) {\n // Exit early because we don't have enough to parse\n // the ADTS frame header\n if (everything.length - byteIndex < 7) {\n break;\n }\n frameSize = aacUtils.parseAdtsSize(everything, byteIndex); // Exit early if we don't have enough in the buffer\n // to emit a full packet\n\n if (byteIndex + frameSize > everything.length) {\n break;\n }\n packet = {\n type: 'audio',\n data: everything.subarray(byteIndex, byteIndex + frameSize),\n pts: timeStamp,\n dts: timeStamp\n };\n this.trigger('data', packet);\n byteIndex += frameSize;\n continue;\n }\n byteIndex++;\n }\n bytesLeft = everything.length - byteIndex;\n if (bytesLeft > 0) {\n everything = everything.subarray(byteIndex);\n } else {\n everything = new Uint8Array();\n }\n };\n this.reset = function () {\n everything = new Uint8Array();\n this.trigger('reset');\n };\n this.endTimeline = function () {\n everything = new Uint8Array();\n this.trigger('endedtimeline');\n };\n };\n AacStream$1.prototype = new Stream$1();\n var aac = AacStream$1;\n var AUDIO_PROPERTIES$1 = ['audioobjecttype', 'channelcount', 'samplerate', 'samplingfrequencyindex', 'samplesize'];\n var audioProperties = AUDIO_PROPERTIES$1;\n var VIDEO_PROPERTIES$1 = ['width', 'height', 'profileIdc', 'levelIdc', 'profileCompatibility', 'sarRatio'];\n var videoProperties = VIDEO_PROPERTIES$1;\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * A stream-based mp2t to mp4 converter. This utility can be used to\n * deliver mp4s to a SourceBuffer on platforms that support native\n * Media Source Extensions.\n */\n\n var Stream = stream;\n var mp4 = mp4Generator;\n var frameUtils = frameUtils$1;\n var audioFrameUtils = audioFrameUtils$1;\n var trackDecodeInfo = trackDecodeInfo$1;\n var m2ts = m2ts_1;\n var clock = clock$2;\n var AdtsStream = adts;\n var H264Stream = h264.H264Stream;\n var AacStream = aac;\n var isLikelyAacData = utils.isLikelyAacData;\n var ONE_SECOND_IN_TS$1 = clock$2.ONE_SECOND_IN_TS;\n var AUDIO_PROPERTIES = audioProperties;\n var VIDEO_PROPERTIES = videoProperties; // object types\n\n var VideoSegmentStream, AudioSegmentStream, Transmuxer, CoalesceStream;\n var retriggerForStream = function (key, event) {\n event.stream = key;\n this.trigger('log', event);\n };\n var addPipelineLogRetriggers = function (transmuxer, pipeline) {\n var keys = Object.keys(pipeline);\n for (var i = 0; i < keys.length; i++) {\n var key = keys[i]; // skip non-stream keys and headOfPipeline\n // which is just a duplicate\n\n if (key === 'headOfPipeline' || !pipeline[key].on) {\n continue;\n }\n pipeline[key].on('log', retriggerForStream.bind(transmuxer, key));\n }\n };\n /**\n * Compare two arrays (even typed) for same-ness\n */\n\n var arrayEquals = function (a, b) {\n var i;\n if (a.length !== b.length) {\n return false;\n } // compare the value of each element in the array\n\n for (i = 0; i < a.length; i++) {\n if (a[i] !== b[i]) {\n return false;\n }\n }\n return true;\n };\n var generateSegmentTimingInfo = function (baseMediaDecodeTime, startDts, startPts, endDts, endPts, prependedContentDuration) {\n var ptsOffsetFromDts = startPts - startDts,\n decodeDuration = endDts - startDts,\n presentationDuration = endPts - startPts; // The PTS and DTS values are based on the actual stream times from the segment,\n // however, the player time values will reflect a start from the baseMediaDecodeTime.\n // In order to provide relevant values for the player times, base timing info on the\n // baseMediaDecodeTime and the DTS and PTS durations of the segment.\n\n return {\n start: {\n dts: baseMediaDecodeTime,\n pts: baseMediaDecodeTime + ptsOffsetFromDts\n },\n end: {\n dts: baseMediaDecodeTime + decodeDuration,\n pts: baseMediaDecodeTime + presentationDuration\n },\n prependedContentDuration: prependedContentDuration,\n baseMediaDecodeTime: baseMediaDecodeTime\n };\n };\n /**\n * Constructs a single-track, ISO BMFF media segment from AAC data\n * events. The output of this stream can be fed to a SourceBuffer\n * configured with a suitable initialization segment.\n * @param track {object} track metadata configuration\n * @param options {object} transmuxer options object\n * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps\n * in the source; false to adjust the first segment to start at 0.\n */\n\n AudioSegmentStream = function (track, options) {\n var adtsFrames = [],\n sequenceNumber,\n earliestAllowedDts = 0,\n audioAppendStartTs = 0,\n videoBaseMediaDecodeTime = Infinity;\n options = options || {};\n sequenceNumber = options.firstSequenceNumber || 0;\n AudioSegmentStream.prototype.init.call(this);\n this.push = function (data) {\n trackDecodeInfo.collectDtsInfo(track, data);\n if (track) {\n AUDIO_PROPERTIES.forEach(function (prop) {\n track[prop] = data[prop];\n });\n } // buffer audio data until end() is called\n\n adtsFrames.push(data);\n };\n this.setEarliestDts = function (earliestDts) {\n earliestAllowedDts = earliestDts;\n };\n this.setVideoBaseMediaDecodeTime = function (baseMediaDecodeTime) {\n videoBaseMediaDecodeTime = baseMediaDecodeTime;\n };\n this.setAudioAppendStart = function (timestamp) {\n audioAppendStartTs = timestamp;\n };\n this.flush = function () {\n var frames, moof, mdat, boxes, frameDuration, segmentDuration, videoClockCyclesOfSilencePrefixed; // return early if no audio data has been observed\n\n if (adtsFrames.length === 0) {\n this.trigger('done', 'AudioSegmentStream');\n return;\n }\n frames = audioFrameUtils.trimAdtsFramesByEarliestDts(adtsFrames, track, earliestAllowedDts);\n track.baseMediaDecodeTime = trackDecodeInfo.calculateTrackBaseMediaDecodeTime(track, options.keepOriginalTimestamps); // amount of audio filled but the value is in video clock rather than audio clock\n\n videoClockCyclesOfSilencePrefixed = audioFrameUtils.prefixWithSilence(track, frames, audioAppendStartTs, videoBaseMediaDecodeTime); // we have to build the index from byte locations to\n // samples (that is, adts frames) in the audio data\n\n track.samples = audioFrameUtils.generateSampleTable(frames); // concatenate the audio data to constuct the mdat\n\n mdat = mp4.mdat(audioFrameUtils.concatenateFrameData(frames));\n adtsFrames = [];\n moof = mp4.moof(sequenceNumber, [track]);\n boxes = new Uint8Array(moof.byteLength + mdat.byteLength); // bump the sequence number for next time\n\n sequenceNumber++;\n boxes.set(moof);\n boxes.set(mdat, moof.byteLength);\n trackDecodeInfo.clearDtsInfo(track);\n frameDuration = Math.ceil(ONE_SECOND_IN_TS$1 * 1024 / track.samplerate); // TODO this check was added to maintain backwards compatibility (particularly with\n // tests) on adding the timingInfo event. However, it seems unlikely that there's a\n // valid use-case where an init segment/data should be triggered without associated\n // frames. Leaving for now, but should be looked into.\n\n if (frames.length) {\n segmentDuration = frames.length * frameDuration;\n this.trigger('segmentTimingInfo', generateSegmentTimingInfo(\n // The audio track's baseMediaDecodeTime is in audio clock cycles, but the\n // frame info is in video clock cycles. Convert to match expectation of\n // listeners (that all timestamps will be based on video clock cycles).\n clock.audioTsToVideoTs(track.baseMediaDecodeTime, track.samplerate),\n // frame times are already in video clock, as is segment duration\n frames[0].dts, frames[0].pts, frames[0].dts + segmentDuration, frames[0].pts + segmentDuration, videoClockCyclesOfSilencePrefixed || 0));\n this.trigger('timingInfo', {\n start: frames[0].pts,\n end: frames[0].pts + segmentDuration\n });\n }\n this.trigger('data', {\n track: track,\n boxes: boxes\n });\n this.trigger('done', 'AudioSegmentStream');\n };\n this.reset = function () {\n trackDecodeInfo.clearDtsInfo(track);\n adtsFrames = [];\n this.trigger('reset');\n };\n };\n AudioSegmentStream.prototype = new Stream();\n /**\n * Constructs a single-track, ISO BMFF media segment from H264 data\n * events. The output of this stream can be fed to a SourceBuffer\n * configured with a suitable initialization segment.\n * @param track {object} track metadata configuration\n * @param options {object} transmuxer options object\n * @param options.alignGopsAtEnd {boolean} If true, start from the end of the\n * gopsToAlignWith list when attempting to align gop pts\n * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps\n * in the source; false to adjust the first segment to start at 0.\n */\n\n VideoSegmentStream = function (track, options) {\n var sequenceNumber,\n nalUnits = [],\n gopsToAlignWith = [],\n config,\n pps;\n options = options || {};\n sequenceNumber = options.firstSequenceNumber || 0;\n VideoSegmentStream.prototype.init.call(this);\n delete track.minPTS;\n this.gopCache_ = [];\n /**\n * Constructs a ISO BMFF segment given H264 nalUnits\n * @param {Object} nalUnit A data event representing a nalUnit\n * @param {String} nalUnit.nalUnitType\n * @param {Object} nalUnit.config Properties for a mp4 track\n * @param {Uint8Array} nalUnit.data The nalUnit bytes\n * @see lib/codecs/h264.js\n **/\n\n this.push = function (nalUnit) {\n trackDecodeInfo.collectDtsInfo(track, nalUnit); // record the track config\n\n if (nalUnit.nalUnitType === 'seq_parameter_set_rbsp' && !config) {\n config = nalUnit.config;\n track.sps = [nalUnit.data];\n VIDEO_PROPERTIES.forEach(function (prop) {\n track[prop] = config[prop];\n }, this);\n }\n if (nalUnit.nalUnitType === 'pic_parameter_set_rbsp' && !pps) {\n pps = nalUnit.data;\n track.pps = [nalUnit.data];\n } // buffer video until flush() is called\n\n nalUnits.push(nalUnit);\n };\n /**\n * Pass constructed ISO BMFF track and boxes on to the\n * next stream in the pipeline\n **/\n\n this.flush = function () {\n var frames,\n gopForFusion,\n gops,\n moof,\n mdat,\n boxes,\n prependedContentDuration = 0,\n firstGop,\n lastGop; // Throw away nalUnits at the start of the byte stream until\n // we find the first AUD\n\n while (nalUnits.length) {\n if (nalUnits[0].nalUnitType === 'access_unit_delimiter_rbsp') {\n break;\n }\n nalUnits.shift();\n } // Return early if no video data has been observed\n\n if (nalUnits.length === 0) {\n this.resetStream_();\n this.trigger('done', 'VideoSegmentStream');\n return;\n } // Organize the raw nal-units into arrays that represent\n // higher-level constructs such as frames and gops\n // (group-of-pictures)\n\n frames = frameUtils.groupNalsIntoFrames(nalUnits);\n gops = frameUtils.groupFramesIntoGops(frames); // If the first frame of this fragment is not a keyframe we have\n // a problem since MSE (on Chrome) requires a leading keyframe.\n //\n // We have two approaches to repairing this situation:\n // 1) GOP-FUSION:\n // This is where we keep track of the GOPS (group-of-pictures)\n // from previous fragments and attempt to find one that we can\n // prepend to the current fragment in order to create a valid\n // fragment.\n // 2) KEYFRAME-PULLING:\n // Here we search for the first keyframe in the fragment and\n // throw away all the frames between the start of the fragment\n // and that keyframe. We then extend the duration and pull the\n // PTS of the keyframe forward so that it covers the time range\n // of the frames that were disposed of.\n //\n // #1 is far prefereable over #2 which can cause \"stuttering\" but\n // requires more things to be just right.\n\n if (!gops[0][0].keyFrame) {\n // Search for a gop for fusion from our gopCache\n gopForFusion = this.getGopForFusion_(nalUnits[0], track);\n if (gopForFusion) {\n // in order to provide more accurate timing information about the segment, save\n // the number of seconds prepended to the original segment due to GOP fusion\n prependedContentDuration = gopForFusion.duration;\n gops.unshift(gopForFusion); // Adjust Gops' metadata to account for the inclusion of the\n // new gop at the beginning\n\n gops.byteLength += gopForFusion.byteLength;\n gops.nalCount += gopForFusion.nalCount;\n gops.pts = gopForFusion.pts;\n gops.dts = gopForFusion.dts;\n gops.duration += gopForFusion.duration;\n } else {\n // If we didn't find a candidate gop fall back to keyframe-pulling\n gops = frameUtils.extendFirstKeyFrame(gops);\n }\n } // Trim gops to align with gopsToAlignWith\n\n if (gopsToAlignWith.length) {\n var alignedGops;\n if (options.alignGopsAtEnd) {\n alignedGops = this.alignGopsAtEnd_(gops);\n } else {\n alignedGops = this.alignGopsAtStart_(gops);\n }\n if (!alignedGops) {\n // save all the nals in the last GOP into the gop cache\n this.gopCache_.unshift({\n gop: gops.pop(),\n pps: track.pps,\n sps: track.sps\n }); // Keep a maximum of 6 GOPs in the cache\n\n this.gopCache_.length = Math.min(6, this.gopCache_.length); // Clear nalUnits\n\n nalUnits = []; // return early no gops can be aligned with desired gopsToAlignWith\n\n this.resetStream_();\n this.trigger('done', 'VideoSegmentStream');\n return;\n } // Some gops were trimmed. clear dts info so minSegmentDts and pts are correct\n // when recalculated before sending off to CoalesceStream\n\n trackDecodeInfo.clearDtsInfo(track);\n gops = alignedGops;\n }\n trackDecodeInfo.collectDtsInfo(track, gops); // First, we have to build the index from byte locations to\n // samples (that is, frames) in the video data\n\n track.samples = frameUtils.generateSampleTable(gops); // Concatenate the video data and construct the mdat\n\n mdat = mp4.mdat(frameUtils.concatenateNalData(gops));\n track.baseMediaDecodeTime = trackDecodeInfo.calculateTrackBaseMediaDecodeTime(track, options.keepOriginalTimestamps);\n this.trigger('processedGopsInfo', gops.map(function (gop) {\n return {\n pts: gop.pts,\n dts: gop.dts,\n byteLength: gop.byteLength\n };\n }));\n firstGop = gops[0];\n lastGop = gops[gops.length - 1];\n this.trigger('segmentTimingInfo', generateSegmentTimingInfo(track.baseMediaDecodeTime, firstGop.dts, firstGop.pts, lastGop.dts + lastGop.duration, lastGop.pts + lastGop.duration, prependedContentDuration));\n this.trigger('timingInfo', {\n start: gops[0].pts,\n end: gops[gops.length - 1].pts + gops[gops.length - 1].duration\n }); // save all the nals in the last GOP into the gop cache\n\n this.gopCache_.unshift({\n gop: gops.pop(),\n pps: track.pps,\n sps: track.sps\n }); // Keep a maximum of 6 GOPs in the cache\n\n this.gopCache_.length = Math.min(6, this.gopCache_.length); // Clear nalUnits\n\n nalUnits = [];\n this.trigger('baseMediaDecodeTime', track.baseMediaDecodeTime);\n this.trigger('timelineStartInfo', track.timelineStartInfo);\n moof = mp4.moof(sequenceNumber, [track]); // it would be great to allocate this array up front instead of\n // throwing away hundreds of media segment fragments\n\n boxes = new Uint8Array(moof.byteLength + mdat.byteLength); // Bump the sequence number for next time\n\n sequenceNumber++;\n boxes.set(moof);\n boxes.set(mdat, moof.byteLength);\n this.trigger('data', {\n track: track,\n boxes: boxes\n });\n this.resetStream_(); // Continue with the flush process now\n\n this.trigger('done', 'VideoSegmentStream');\n };\n this.reset = function () {\n this.resetStream_();\n nalUnits = [];\n this.gopCache_.length = 0;\n gopsToAlignWith.length = 0;\n this.trigger('reset');\n };\n this.resetStream_ = function () {\n trackDecodeInfo.clearDtsInfo(track); // reset config and pps because they may differ across segments\n // for instance, when we are rendition switching\n\n config = undefined;\n pps = undefined;\n }; // Search for a candidate Gop for gop-fusion from the gop cache and\n // return it or return null if no good candidate was found\n\n this.getGopForFusion_ = function (nalUnit) {\n var halfSecond = 45000,\n // Half-a-second in a 90khz clock\n allowableOverlap = 10000,\n // About 3 frames @ 30fps\n nearestDistance = Infinity,\n dtsDistance,\n nearestGopObj,\n currentGop,\n currentGopObj,\n i; // Search for the GOP nearest to the beginning of this nal unit\n\n for (i = 0; i < this.gopCache_.length; i++) {\n currentGopObj = this.gopCache_[i];\n currentGop = currentGopObj.gop; // Reject Gops with different SPS or PPS\n\n if (!(track.pps && arrayEquals(track.pps[0], currentGopObj.pps[0])) || !(track.sps && arrayEquals(track.sps[0], currentGopObj.sps[0]))) {\n continue;\n } // Reject Gops that would require a negative baseMediaDecodeTime\n\n if (currentGop.dts < track.timelineStartInfo.dts) {\n continue;\n } // The distance between the end of the gop and the start of the nalUnit\n\n dtsDistance = nalUnit.dts - currentGop.dts - currentGop.duration; // Only consider GOPS that start before the nal unit and end within\n // a half-second of the nal unit\n\n if (dtsDistance >= -allowableOverlap && dtsDistance <= halfSecond) {\n // Always use the closest GOP we found if there is more than\n // one candidate\n if (!nearestGopObj || nearestDistance > dtsDistance) {\n nearestGopObj = currentGopObj;\n nearestDistance = dtsDistance;\n }\n }\n }\n if (nearestGopObj) {\n return nearestGopObj.gop;\n }\n return null;\n }; // trim gop list to the first gop found that has a matching pts with a gop in the list\n // of gopsToAlignWith starting from the START of the list\n\n this.alignGopsAtStart_ = function (gops) {\n var alignIndex, gopIndex, align, gop, byteLength, nalCount, duration, alignedGops;\n byteLength = gops.byteLength;\n nalCount = gops.nalCount;\n duration = gops.duration;\n alignIndex = gopIndex = 0;\n while (alignIndex < gopsToAlignWith.length && gopIndex < gops.length) {\n align = gopsToAlignWith[alignIndex];\n gop = gops[gopIndex];\n if (align.pts === gop.pts) {\n break;\n }\n if (gop.pts > align.pts) {\n // this current gop starts after the current gop we want to align on, so increment\n // align index\n alignIndex++;\n continue;\n } // current gop starts before the current gop we want to align on. so increment gop\n // index\n\n gopIndex++;\n byteLength -= gop.byteLength;\n nalCount -= gop.nalCount;\n duration -= gop.duration;\n }\n if (gopIndex === 0) {\n // no gops to trim\n return gops;\n }\n if (gopIndex === gops.length) {\n // all gops trimmed, skip appending all gops\n return null;\n }\n alignedGops = gops.slice(gopIndex);\n alignedGops.byteLength = byteLength;\n alignedGops.duration = duration;\n alignedGops.nalCount = nalCount;\n alignedGops.pts = alignedGops[0].pts;\n alignedGops.dts = alignedGops[0].dts;\n return alignedGops;\n }; // trim gop list to the first gop found that has a matching pts with a gop in the list\n // of gopsToAlignWith starting from the END of the list\n\n this.alignGopsAtEnd_ = function (gops) {\n var alignIndex, gopIndex, align, gop, alignEndIndex, matchFound;\n alignIndex = gopsToAlignWith.length - 1;\n gopIndex = gops.length - 1;\n alignEndIndex = null;\n matchFound = false;\n while (alignIndex >= 0 && gopIndex >= 0) {\n align = gopsToAlignWith[alignIndex];\n gop = gops[gopIndex];\n if (align.pts === gop.pts) {\n matchFound = true;\n break;\n }\n if (align.pts > gop.pts) {\n alignIndex--;\n continue;\n }\n if (alignIndex === gopsToAlignWith.length - 1) {\n // gop.pts is greater than the last alignment candidate. If no match is found\n // by the end of this loop, we still want to append gops that come after this\n // point\n alignEndIndex = gopIndex;\n }\n gopIndex--;\n }\n if (!matchFound && alignEndIndex === null) {\n return null;\n }\n var trimIndex;\n if (matchFound) {\n trimIndex = gopIndex;\n } else {\n trimIndex = alignEndIndex;\n }\n if (trimIndex === 0) {\n return gops;\n }\n var alignedGops = gops.slice(trimIndex);\n var metadata = alignedGops.reduce(function (total, gop) {\n total.byteLength += gop.byteLength;\n total.duration += gop.duration;\n total.nalCount += gop.nalCount;\n return total;\n }, {\n byteLength: 0,\n duration: 0,\n nalCount: 0\n });\n alignedGops.byteLength = metadata.byteLength;\n alignedGops.duration = metadata.duration;\n alignedGops.nalCount = metadata.nalCount;\n alignedGops.pts = alignedGops[0].pts;\n alignedGops.dts = alignedGops[0].dts;\n return alignedGops;\n };\n this.alignGopsWith = function (newGopsToAlignWith) {\n gopsToAlignWith = newGopsToAlignWith;\n };\n };\n VideoSegmentStream.prototype = new Stream();\n /**\n * A Stream that can combine multiple streams (ie. audio & video)\n * into a single output segment for MSE. Also supports audio-only\n * and video-only streams.\n * @param options {object} transmuxer options object\n * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps\n * in the source; false to adjust the first segment to start at media timeline start.\n */\n\n CoalesceStream = function (options, metadataStream) {\n // Number of Tracks per output segment\n // If greater than 1, we combine multiple\n // tracks into a single segment\n this.numberOfTracks = 0;\n this.metadataStream = metadataStream;\n options = options || {};\n if (typeof options.remux !== 'undefined') {\n this.remuxTracks = !!options.remux;\n } else {\n this.remuxTracks = true;\n }\n if (typeof options.keepOriginalTimestamps === 'boolean') {\n this.keepOriginalTimestamps = options.keepOriginalTimestamps;\n } else {\n this.keepOriginalTimestamps = false;\n }\n this.pendingTracks = [];\n this.videoTrack = null;\n this.pendingBoxes = [];\n this.pendingCaptions = [];\n this.pendingMetadata = [];\n this.pendingBytes = 0;\n this.emittedTracks = 0;\n CoalesceStream.prototype.init.call(this); // Take output from multiple\n\n this.push = function (output) {\n // buffer incoming captions until the associated video segment\n // finishes\n if (output.content || output.text) {\n return this.pendingCaptions.push(output);\n } // buffer incoming id3 tags until the final flush\n\n if (output.frames) {\n return this.pendingMetadata.push(output);\n } // Add this track to the list of pending tracks and store\n // important information required for the construction of\n // the final segment\n\n this.pendingTracks.push(output.track);\n this.pendingBytes += output.boxes.byteLength; // TODO: is there an issue for this against chrome?\n // We unshift audio and push video because\n // as of Chrome 75 when switching from\n // one init segment to another if the video\n // mdat does not appear after the audio mdat\n // only audio will play for the duration of our transmux.\n\n if (output.track.type === 'video') {\n this.videoTrack = output.track;\n this.pendingBoxes.push(output.boxes);\n }\n if (output.track.type === 'audio') {\n this.audioTrack = output.track;\n this.pendingBoxes.unshift(output.boxes);\n }\n };\n };\n CoalesceStream.prototype = new Stream();\n CoalesceStream.prototype.flush = function (flushSource) {\n var offset = 0,\n event = {\n captions: [],\n captionStreams: {},\n metadata: [],\n info: {}\n },\n caption,\n id3,\n initSegment,\n timelineStartPts = 0,\n i;\n if (this.pendingTracks.length < this.numberOfTracks) {\n if (flushSource !== 'VideoSegmentStream' && flushSource !== 'AudioSegmentStream') {\n // Return because we haven't received a flush from a data-generating\n // portion of the segment (meaning that we have only recieved meta-data\n // or captions.)\n return;\n } else if (this.remuxTracks) {\n // Return until we have enough tracks from the pipeline to remux (if we\n // are remuxing audio and video into a single MP4)\n return;\n } else if (this.pendingTracks.length === 0) {\n // In the case where we receive a flush without any data having been\n // received we consider it an emitted track for the purposes of coalescing\n // `done` events.\n // We do this for the case where there is an audio and video track in the\n // segment but no audio data. (seen in several playlists with alternate\n // audio tracks and no audio present in the main TS segments.)\n this.emittedTracks++;\n if (this.emittedTracks >= this.numberOfTracks) {\n this.trigger('done');\n this.emittedTracks = 0;\n }\n return;\n }\n }\n if (this.videoTrack) {\n timelineStartPts = this.videoTrack.timelineStartInfo.pts;\n VIDEO_PROPERTIES.forEach(function (prop) {\n event.info[prop] = this.videoTrack[prop];\n }, this);\n } else if (this.audioTrack) {\n timelineStartPts = this.audioTrack.timelineStartInfo.pts;\n AUDIO_PROPERTIES.forEach(function (prop) {\n event.info[prop] = this.audioTrack[prop];\n }, this);\n }\n if (this.videoTrack || this.audioTrack) {\n if (this.pendingTracks.length === 1) {\n event.type = this.pendingTracks[0].type;\n } else {\n event.type = 'combined';\n }\n this.emittedTracks += this.pendingTracks.length;\n initSegment = mp4.initSegment(this.pendingTracks); // Create a new typed array to hold the init segment\n\n event.initSegment = new Uint8Array(initSegment.byteLength); // Create an init segment containing a moov\n // and track definitions\n\n event.initSegment.set(initSegment); // Create a new typed array to hold the moof+mdats\n\n event.data = new Uint8Array(this.pendingBytes); // Append each moof+mdat (one per track) together\n\n for (i = 0; i < this.pendingBoxes.length; i++) {\n event.data.set(this.pendingBoxes[i], offset);\n offset += this.pendingBoxes[i].byteLength;\n } // Translate caption PTS times into second offsets to match the\n // video timeline for the segment, and add track info\n\n for (i = 0; i < this.pendingCaptions.length; i++) {\n caption = this.pendingCaptions[i];\n caption.startTime = clock.metadataTsToSeconds(caption.startPts, timelineStartPts, this.keepOriginalTimestamps);\n caption.endTime = clock.metadataTsToSeconds(caption.endPts, timelineStartPts, this.keepOriginalTimestamps);\n event.captionStreams[caption.stream] = true;\n event.captions.push(caption);\n } // Translate ID3 frame PTS times into second offsets to match the\n // video timeline for the segment\n\n for (i = 0; i < this.pendingMetadata.length; i++) {\n id3 = this.pendingMetadata[i];\n id3.cueTime = clock.metadataTsToSeconds(id3.pts, timelineStartPts, this.keepOriginalTimestamps);\n event.metadata.push(id3);\n } // We add this to every single emitted segment even though we only need\n // it for the first\n\n event.metadata.dispatchType = this.metadataStream.dispatchType; // Reset stream state\n\n this.pendingTracks.length = 0;\n this.videoTrack = null;\n this.pendingBoxes.length = 0;\n this.pendingCaptions.length = 0;\n this.pendingBytes = 0;\n this.pendingMetadata.length = 0; // Emit the built segment\n // We include captions and ID3 tags for backwards compatibility,\n // ideally we should send only video and audio in the data event\n\n this.trigger('data', event); // Emit each caption to the outside world\n // Ideally, this would happen immediately on parsing captions,\n // but we need to ensure that video data is sent back first\n // so that caption timing can be adjusted to match video timing\n\n for (i = 0; i < event.captions.length; i++) {\n caption = event.captions[i];\n this.trigger('caption', caption);\n } // Emit each id3 tag to the outside world\n // Ideally, this would happen immediately on parsing the tag,\n // but we need to ensure that video data is sent back first\n // so that ID3 frame timing can be adjusted to match video timing\n\n for (i = 0; i < event.metadata.length; i++) {\n id3 = event.metadata[i];\n this.trigger('id3Frame', id3);\n }\n } // Only emit `done` if all tracks have been flushed and emitted\n\n if (this.emittedTracks >= this.numberOfTracks) {\n this.trigger('done');\n this.emittedTracks = 0;\n }\n };\n CoalesceStream.prototype.setRemux = function (val) {\n this.remuxTracks = val;\n };\n /**\n * A Stream that expects MP2T binary data as input and produces\n * corresponding media segments, suitable for use with Media Source\n * Extension (MSE) implementations that support the ISO BMFF byte\n * stream format, like Chrome.\n */\n\n Transmuxer = function (options) {\n var self = this,\n hasFlushed = true,\n videoTrack,\n audioTrack;\n Transmuxer.prototype.init.call(this);\n options = options || {};\n this.baseMediaDecodeTime = options.baseMediaDecodeTime || 0;\n this.transmuxPipeline_ = {};\n this.setupAacPipeline = function () {\n var pipeline = {};\n this.transmuxPipeline_ = pipeline;\n pipeline.type = 'aac';\n pipeline.metadataStream = new m2ts.MetadataStream(); // set up the parsing pipeline\n\n pipeline.aacStream = new AacStream();\n pipeline.audioTimestampRolloverStream = new m2ts.TimestampRolloverStream('audio');\n pipeline.timedMetadataTimestampRolloverStream = new m2ts.TimestampRolloverStream('timed-metadata');\n pipeline.adtsStream = new AdtsStream();\n pipeline.coalesceStream = new CoalesceStream(options, pipeline.metadataStream);\n pipeline.headOfPipeline = pipeline.aacStream;\n pipeline.aacStream.pipe(pipeline.audioTimestampRolloverStream).pipe(pipeline.adtsStream);\n pipeline.aacStream.pipe(pipeline.timedMetadataTimestampRolloverStream).pipe(pipeline.metadataStream).pipe(pipeline.coalesceStream);\n pipeline.metadataStream.on('timestamp', function (frame) {\n pipeline.aacStream.setTimestamp(frame.timeStamp);\n });\n pipeline.aacStream.on('data', function (data) {\n if (data.type !== 'timed-metadata' && data.type !== 'audio' || pipeline.audioSegmentStream) {\n return;\n }\n audioTrack = audioTrack || {\n timelineStartInfo: {\n baseMediaDecodeTime: self.baseMediaDecodeTime\n },\n codec: 'adts',\n type: 'audio'\n }; // hook up the audio segment stream to the first track with aac data\n\n pipeline.coalesceStream.numberOfTracks++;\n pipeline.audioSegmentStream = new AudioSegmentStream(audioTrack, options);\n pipeline.audioSegmentStream.on('log', self.getLogTrigger_('audioSegmentStream'));\n pipeline.audioSegmentStream.on('timingInfo', self.trigger.bind(self, 'audioTimingInfo')); // Set up the final part of the audio pipeline\n\n pipeline.adtsStream.pipe(pipeline.audioSegmentStream).pipe(pipeline.coalesceStream); // emit pmt info\n\n self.trigger('trackinfo', {\n hasAudio: !!audioTrack,\n hasVideo: !!videoTrack\n });\n }); // Re-emit any data coming from the coalesce stream to the outside world\n\n pipeline.coalesceStream.on('data', this.trigger.bind(this, 'data')); // Let the consumer know we have finished flushing the entire pipeline\n\n pipeline.coalesceStream.on('done', this.trigger.bind(this, 'done'));\n addPipelineLogRetriggers(this, pipeline);\n };\n this.setupTsPipeline = function () {\n var pipeline = {};\n this.transmuxPipeline_ = pipeline;\n pipeline.type = 'ts';\n pipeline.metadataStream = new m2ts.MetadataStream(); // set up the parsing pipeline\n\n pipeline.packetStream = new m2ts.TransportPacketStream();\n pipeline.parseStream = new m2ts.TransportParseStream();\n pipeline.elementaryStream = new m2ts.ElementaryStream();\n pipeline.timestampRolloverStream = new m2ts.TimestampRolloverStream();\n pipeline.adtsStream = new AdtsStream();\n pipeline.h264Stream = new H264Stream();\n pipeline.captionStream = new m2ts.CaptionStream(options);\n pipeline.coalesceStream = new CoalesceStream(options, pipeline.metadataStream);\n pipeline.headOfPipeline = pipeline.packetStream; // disassemble MPEG2-TS packets into elementary streams\n\n pipeline.packetStream.pipe(pipeline.parseStream).pipe(pipeline.elementaryStream).pipe(pipeline.timestampRolloverStream); // !!THIS ORDER IS IMPORTANT!!\n // demux the streams\n\n pipeline.timestampRolloverStream.pipe(pipeline.h264Stream);\n pipeline.timestampRolloverStream.pipe(pipeline.adtsStream);\n pipeline.timestampRolloverStream.pipe(pipeline.metadataStream).pipe(pipeline.coalesceStream); // Hook up CEA-608/708 caption stream\n\n pipeline.h264Stream.pipe(pipeline.captionStream).pipe(pipeline.coalesceStream);\n pipeline.elementaryStream.on('data', function (data) {\n var i;\n if (data.type === 'metadata') {\n i = data.tracks.length; // scan the tracks listed in the metadata\n\n while (i--) {\n if (!videoTrack && data.tracks[i].type === 'video') {\n videoTrack = data.tracks[i];\n videoTrack.timelineStartInfo.baseMediaDecodeTime = self.baseMediaDecodeTime;\n } else if (!audioTrack && data.tracks[i].type === 'audio') {\n audioTrack = data.tracks[i];\n audioTrack.timelineStartInfo.baseMediaDecodeTime = self.baseMediaDecodeTime;\n }\n } // hook up the video segment stream to the first track with h264 data\n\n if (videoTrack && !pipeline.videoSegmentStream) {\n pipeline.coalesceStream.numberOfTracks++;\n pipeline.videoSegmentStream = new VideoSegmentStream(videoTrack, options);\n pipeline.videoSegmentStream.on('log', self.getLogTrigger_('videoSegmentStream'));\n pipeline.videoSegmentStream.on('timelineStartInfo', function (timelineStartInfo) {\n // When video emits timelineStartInfo data after a flush, we forward that\n // info to the AudioSegmentStream, if it exists, because video timeline\n // data takes precedence. Do not do this if keepOriginalTimestamps is set,\n // because this is a particularly subtle form of timestamp alteration.\n if (audioTrack && !options.keepOriginalTimestamps) {\n audioTrack.timelineStartInfo = timelineStartInfo; // On the first segment we trim AAC frames that exist before the\n // very earliest DTS we have seen in video because Chrome will\n // interpret any video track with a baseMediaDecodeTime that is\n // non-zero as a gap.\n\n pipeline.audioSegmentStream.setEarliestDts(timelineStartInfo.dts - self.baseMediaDecodeTime);\n }\n });\n pipeline.videoSegmentStream.on('processedGopsInfo', self.trigger.bind(self, 'gopInfo'));\n pipeline.videoSegmentStream.on('segmentTimingInfo', self.trigger.bind(self, 'videoSegmentTimingInfo'));\n pipeline.videoSegmentStream.on('baseMediaDecodeTime', function (baseMediaDecodeTime) {\n if (audioTrack) {\n pipeline.audioSegmentStream.setVideoBaseMediaDecodeTime(baseMediaDecodeTime);\n }\n });\n pipeline.videoSegmentStream.on('timingInfo', self.trigger.bind(self, 'videoTimingInfo')); // Set up the final part of the video pipeline\n\n pipeline.h264Stream.pipe(pipeline.videoSegmentStream).pipe(pipeline.coalesceStream);\n }\n if (audioTrack && !pipeline.audioSegmentStream) {\n // hook up the audio segment stream to the first track with aac data\n pipeline.coalesceStream.numberOfTracks++;\n pipeline.audioSegmentStream = new AudioSegmentStream(audioTrack, options);\n pipeline.audioSegmentStream.on('log', self.getLogTrigger_('audioSegmentStream'));\n pipeline.audioSegmentStream.on('timingInfo', self.trigger.bind(self, 'audioTimingInfo'));\n pipeline.audioSegmentStream.on('segmentTimingInfo', self.trigger.bind(self, 'audioSegmentTimingInfo')); // Set up the final part of the audio pipeline\n\n pipeline.adtsStream.pipe(pipeline.audioSegmentStream).pipe(pipeline.coalesceStream);\n } // emit pmt info\n\n self.trigger('trackinfo', {\n hasAudio: !!audioTrack,\n hasVideo: !!videoTrack\n });\n }\n }); // Re-emit any data coming from the coalesce stream to the outside world\n\n pipeline.coalesceStream.on('data', this.trigger.bind(this, 'data'));\n pipeline.coalesceStream.on('id3Frame', function (id3Frame) {\n id3Frame.dispatchType = pipeline.metadataStream.dispatchType;\n self.trigger('id3Frame', id3Frame);\n });\n pipeline.coalesceStream.on('caption', this.trigger.bind(this, 'caption')); // Let the consumer know we have finished flushing the entire pipeline\n\n pipeline.coalesceStream.on('done', this.trigger.bind(this, 'done'));\n addPipelineLogRetriggers(this, pipeline);\n }; // hook up the segment streams once track metadata is delivered\n\n this.setBaseMediaDecodeTime = function (baseMediaDecodeTime) {\n var pipeline = this.transmuxPipeline_;\n if (!options.keepOriginalTimestamps) {\n this.baseMediaDecodeTime = baseMediaDecodeTime;\n }\n if (audioTrack) {\n audioTrack.timelineStartInfo.dts = undefined;\n audioTrack.timelineStartInfo.pts = undefined;\n trackDecodeInfo.clearDtsInfo(audioTrack);\n if (pipeline.audioTimestampRolloverStream) {\n pipeline.audioTimestampRolloverStream.discontinuity();\n }\n }\n if (videoTrack) {\n if (pipeline.videoSegmentStream) {\n pipeline.videoSegmentStream.gopCache_ = [];\n }\n videoTrack.timelineStartInfo.dts = undefined;\n videoTrack.timelineStartInfo.pts = undefined;\n trackDecodeInfo.clearDtsInfo(videoTrack);\n pipeline.captionStream.reset();\n }\n if (pipeline.timestampRolloverStream) {\n pipeline.timestampRolloverStream.discontinuity();\n }\n };\n this.setAudioAppendStart = function (timestamp) {\n if (audioTrack) {\n this.transmuxPipeline_.audioSegmentStream.setAudioAppendStart(timestamp);\n }\n };\n this.setRemux = function (val) {\n var pipeline = this.transmuxPipeline_;\n options.remux = val;\n if (pipeline && pipeline.coalesceStream) {\n pipeline.coalesceStream.setRemux(val);\n }\n };\n this.alignGopsWith = function (gopsToAlignWith) {\n if (videoTrack && this.transmuxPipeline_.videoSegmentStream) {\n this.transmuxPipeline_.videoSegmentStream.alignGopsWith(gopsToAlignWith);\n }\n };\n this.getLogTrigger_ = function (key) {\n var self = this;\n return function (event) {\n event.stream = key;\n self.trigger('log', event);\n };\n }; // feed incoming data to the front of the parsing pipeline\n\n this.push = function (data) {\n if (hasFlushed) {\n var isAac = isLikelyAacData(data);\n if (isAac && this.transmuxPipeline_.type !== 'aac') {\n this.setupAacPipeline();\n } else if (!isAac && this.transmuxPipeline_.type !== 'ts') {\n this.setupTsPipeline();\n }\n hasFlushed = false;\n }\n this.transmuxPipeline_.headOfPipeline.push(data);\n }; // flush any buffered data\n\n this.flush = function () {\n hasFlushed = true; // Start at the top of the pipeline and flush all pending work\n\n this.transmuxPipeline_.headOfPipeline.flush();\n };\n this.endTimeline = function () {\n this.transmuxPipeline_.headOfPipeline.endTimeline();\n };\n this.reset = function () {\n if (this.transmuxPipeline_.headOfPipeline) {\n this.transmuxPipeline_.headOfPipeline.reset();\n }\n }; // Caption data has to be reset when seeking outside buffered range\n\n this.resetCaptions = function () {\n if (this.transmuxPipeline_.captionStream) {\n this.transmuxPipeline_.captionStream.reset();\n }\n };\n };\n Transmuxer.prototype = new Stream();\n var transmuxer = {\n Transmuxer: Transmuxer,\n VideoSegmentStream: VideoSegmentStream,\n AudioSegmentStream: AudioSegmentStream,\n AUDIO_PROPERTIES: AUDIO_PROPERTIES,\n VIDEO_PROPERTIES: VIDEO_PROPERTIES,\n // exported for testing\n generateSegmentTimingInfo: generateSegmentTimingInfo\n };\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n */\n\n var toUnsigned$3 = function (value) {\n return value >>> 0;\n };\n var toHexString$1 = function (value) {\n return ('00' + value.toString(16)).slice(-2);\n };\n var bin = {\n toUnsigned: toUnsigned$3,\n toHexString: toHexString$1\n };\n var parseType$3 = function (buffer) {\n var result = '';\n result += String.fromCharCode(buffer[0]);\n result += String.fromCharCode(buffer[1]);\n result += String.fromCharCode(buffer[2]);\n result += String.fromCharCode(buffer[3]);\n return result;\n };\n var parseType_1 = parseType$3;\n var toUnsigned$2 = bin.toUnsigned;\n var parseType$2 = parseType_1;\n var findBox$2 = function (data, path) {\n var results = [],\n i,\n size,\n type,\n end,\n subresults;\n if (!path.length) {\n // short-circuit the search for empty paths\n return null;\n }\n for (i = 0; i < data.byteLength;) {\n size = toUnsigned$2(data[i] << 24 | data[i + 1] << 16 | data[i + 2] << 8 | data[i + 3]);\n type = parseType$2(data.subarray(i + 4, i + 8));\n end = size > 1 ? i + size : data.byteLength;\n if (type === path[0]) {\n if (path.length === 1) {\n // this is the end of the path and we've found the box we were\n // looking for\n results.push(data.subarray(i + 8, end));\n } else {\n // recursively search for the next box along the path\n subresults = findBox$2(data.subarray(i + 8, end), path.slice(1));\n if (subresults.length) {\n results = results.concat(subresults);\n }\n }\n }\n i = end;\n } // we've finished searching all of data\n\n return results;\n };\n var findBox_1 = findBox$2;\n var toUnsigned$1 = bin.toUnsigned;\n var getUint64$2 = numbers.getUint64;\n var tfdt = function (data) {\n var result = {\n version: data[0],\n flags: new Uint8Array(data.subarray(1, 4))\n };\n if (result.version === 1) {\n result.baseMediaDecodeTime = getUint64$2(data.subarray(4));\n } else {\n result.baseMediaDecodeTime = toUnsigned$1(data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7]);\n }\n return result;\n };\n var parseTfdt$2 = tfdt;\n var parseSampleFlags$1 = function (flags) {\n return {\n isLeading: (flags[0] & 0x0c) >>> 2,\n dependsOn: flags[0] & 0x03,\n isDependedOn: (flags[1] & 0xc0) >>> 6,\n hasRedundancy: (flags[1] & 0x30) >>> 4,\n paddingValue: (flags[1] & 0x0e) >>> 1,\n isNonSyncSample: flags[1] & 0x01,\n degradationPriority: flags[2] << 8 | flags[3]\n };\n };\n var parseSampleFlags_1 = parseSampleFlags$1;\n var parseSampleFlags = parseSampleFlags_1;\n var trun = function (data) {\n var result = {\n version: data[0],\n flags: new Uint8Array(data.subarray(1, 4)),\n samples: []\n },\n view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n // Flag interpretation\n dataOffsetPresent = result.flags[2] & 0x01,\n // compare with 2nd byte of 0x1\n firstSampleFlagsPresent = result.flags[2] & 0x04,\n // compare with 2nd byte of 0x4\n sampleDurationPresent = result.flags[1] & 0x01,\n // compare with 2nd byte of 0x100\n sampleSizePresent = result.flags[1] & 0x02,\n // compare with 2nd byte of 0x200\n sampleFlagsPresent = result.flags[1] & 0x04,\n // compare with 2nd byte of 0x400\n sampleCompositionTimeOffsetPresent = result.flags[1] & 0x08,\n // compare with 2nd byte of 0x800\n sampleCount = view.getUint32(4),\n offset = 8,\n sample;\n if (dataOffsetPresent) {\n // 32 bit signed integer\n result.dataOffset = view.getInt32(offset);\n offset += 4;\n } // Overrides the flags for the first sample only. The order of\n // optional values will be: duration, size, compositionTimeOffset\n\n if (firstSampleFlagsPresent && sampleCount) {\n sample = {\n flags: parseSampleFlags(data.subarray(offset, offset + 4))\n };\n offset += 4;\n if (sampleDurationPresent) {\n sample.duration = view.getUint32(offset);\n offset += 4;\n }\n if (sampleSizePresent) {\n sample.size = view.getUint32(offset);\n offset += 4;\n }\n if (sampleCompositionTimeOffsetPresent) {\n if (result.version === 1) {\n sample.compositionTimeOffset = view.getInt32(offset);\n } else {\n sample.compositionTimeOffset = view.getUint32(offset);\n }\n offset += 4;\n }\n result.samples.push(sample);\n sampleCount--;\n }\n while (sampleCount--) {\n sample = {};\n if (sampleDurationPresent) {\n sample.duration = view.getUint32(offset);\n offset += 4;\n }\n if (sampleSizePresent) {\n sample.size = view.getUint32(offset);\n offset += 4;\n }\n if (sampleFlagsPresent) {\n sample.flags = parseSampleFlags(data.subarray(offset, offset + 4));\n offset += 4;\n }\n if (sampleCompositionTimeOffsetPresent) {\n if (result.version === 1) {\n sample.compositionTimeOffset = view.getInt32(offset);\n } else {\n sample.compositionTimeOffset = view.getUint32(offset);\n }\n offset += 4;\n }\n result.samples.push(sample);\n }\n return result;\n };\n var parseTrun$2 = trun;\n var tfhd = function (data) {\n var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n result = {\n version: data[0],\n flags: new Uint8Array(data.subarray(1, 4)),\n trackId: view.getUint32(4)\n },\n baseDataOffsetPresent = result.flags[2] & 0x01,\n sampleDescriptionIndexPresent = result.flags[2] & 0x02,\n defaultSampleDurationPresent = result.flags[2] & 0x08,\n defaultSampleSizePresent = result.flags[2] & 0x10,\n defaultSampleFlagsPresent = result.flags[2] & 0x20,\n durationIsEmpty = result.flags[0] & 0x010000,\n defaultBaseIsMoof = result.flags[0] & 0x020000,\n i;\n i = 8;\n if (baseDataOffsetPresent) {\n i += 4; // truncate top 4 bytes\n // FIXME: should we read the full 64 bits?\n\n result.baseDataOffset = view.getUint32(12);\n i += 4;\n }\n if (sampleDescriptionIndexPresent) {\n result.sampleDescriptionIndex = view.getUint32(i);\n i += 4;\n }\n if (defaultSampleDurationPresent) {\n result.defaultSampleDuration = view.getUint32(i);\n i += 4;\n }\n if (defaultSampleSizePresent) {\n result.defaultSampleSize = view.getUint32(i);\n i += 4;\n }\n if (defaultSampleFlagsPresent) {\n result.defaultSampleFlags = view.getUint32(i);\n }\n if (durationIsEmpty) {\n result.durationIsEmpty = true;\n }\n if (!baseDataOffsetPresent && defaultBaseIsMoof) {\n result.baseDataOffsetIsMoof = true;\n }\n return result;\n };\n var parseTfhd$2 = tfhd;\n var win;\n if (typeof window !== \"undefined\") {\n win = window;\n } else if (typeof commonjsGlobal !== \"undefined\") {\n win = commonjsGlobal;\n } else if (typeof self !== \"undefined\") {\n win = self;\n } else {\n win = {};\n }\n var window_1 = win;\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * Reads in-band CEA-708 captions out of FMP4 segments.\n * @see https://en.wikipedia.org/wiki/CEA-708\n */\n\n var discardEmulationPreventionBytes = captionPacketParser.discardEmulationPreventionBytes;\n var CaptionStream = captionStream.CaptionStream;\n var findBox$1 = findBox_1;\n var parseTfdt$1 = parseTfdt$2;\n var parseTrun$1 = parseTrun$2;\n var parseTfhd$1 = parseTfhd$2;\n var window$2 = window_1;\n /**\n * Maps an offset in the mdat to a sample based on the the size of the samples.\n * Assumes that `parseSamples` has been called first.\n *\n * @param {Number} offset - The offset into the mdat\n * @param {Object[]} samples - An array of samples, parsed using `parseSamples`\n * @return {?Object} The matching sample, or null if no match was found.\n *\n * @see ISO-BMFF-12/2015, Section 8.8.8\n **/\n\n var mapToSample = function (offset, samples) {\n var approximateOffset = offset;\n for (var i = 0; i < samples.length; i++) {\n var sample = samples[i];\n if (approximateOffset < sample.size) {\n return sample;\n }\n approximateOffset -= sample.size;\n }\n return null;\n };\n /**\n * Finds SEI nal units contained in a Media Data Box.\n * Assumes that `parseSamples` has been called first.\n *\n * @param {Uint8Array} avcStream - The bytes of the mdat\n * @param {Object[]} samples - The samples parsed out by `parseSamples`\n * @param {Number} trackId - The trackId of this video track\n * @return {Object[]} seiNals - the parsed SEI NALUs found.\n * The contents of the seiNal should match what is expected by\n * CaptionStream.push (nalUnitType, size, data, escapedRBSP, pts, dts)\n *\n * @see ISO-BMFF-12/2015, Section 8.1.1\n * @see Rec. ITU-T H.264, 7.3.2.3.1\n **/\n\n var findSeiNals = function (avcStream, samples, trackId) {\n var avcView = new DataView(avcStream.buffer, avcStream.byteOffset, avcStream.byteLength),\n result = {\n logs: [],\n seiNals: []\n },\n seiNal,\n i,\n length,\n lastMatchedSample;\n for (i = 0; i + 4 < avcStream.length; i += length) {\n length = avcView.getUint32(i);\n i += 4; // Bail if this doesn't appear to be an H264 stream\n\n if (length <= 0) {\n continue;\n }\n switch (avcStream[i] & 0x1F) {\n case 0x06:\n var data = avcStream.subarray(i + 1, i + 1 + length);\n var matchingSample = mapToSample(i, samples);\n seiNal = {\n nalUnitType: 'sei_rbsp',\n size: length,\n data: data,\n escapedRBSP: discardEmulationPreventionBytes(data),\n trackId: trackId\n };\n if (matchingSample) {\n seiNal.pts = matchingSample.pts;\n seiNal.dts = matchingSample.dts;\n lastMatchedSample = matchingSample;\n } else if (lastMatchedSample) {\n // If a matching sample cannot be found, use the last\n // sample's values as they should be as close as possible\n seiNal.pts = lastMatchedSample.pts;\n seiNal.dts = lastMatchedSample.dts;\n } else {\n result.logs.push({\n level: 'warn',\n message: 'We\\'ve encountered a nal unit without data at ' + i + ' for trackId ' + trackId + '. See mux.js#223.'\n });\n break;\n }\n result.seiNals.push(seiNal);\n break;\n }\n }\n return result;\n };\n /**\n * Parses sample information out of Track Run Boxes and calculates\n * the absolute presentation and decode timestamps of each sample.\n *\n * @param {Array} truns - The Trun Run boxes to be parsed\n * @param {Number|BigInt} baseMediaDecodeTime - base media decode time from tfdt\n @see ISO-BMFF-12/2015, Section 8.8.12\n * @param {Object} tfhd - The parsed Track Fragment Header\n * @see inspect.parseTfhd\n * @return {Object[]} the parsed samples\n *\n * @see ISO-BMFF-12/2015, Section 8.8.8\n **/\n\n var parseSamples = function (truns, baseMediaDecodeTime, tfhd) {\n var currentDts = baseMediaDecodeTime;\n var defaultSampleDuration = tfhd.defaultSampleDuration || 0;\n var defaultSampleSize = tfhd.defaultSampleSize || 0;\n var trackId = tfhd.trackId;\n var allSamples = [];\n truns.forEach(function (trun) {\n // Note: We currently do not parse the sample table as well\n // as the trun. It's possible some sources will require this.\n // moov > trak > mdia > minf > stbl\n var trackRun = parseTrun$1(trun);\n var samples = trackRun.samples;\n samples.forEach(function (sample) {\n if (sample.duration === undefined) {\n sample.duration = defaultSampleDuration;\n }\n if (sample.size === undefined) {\n sample.size = defaultSampleSize;\n }\n sample.trackId = trackId;\n sample.dts = currentDts;\n if (sample.compositionTimeOffset === undefined) {\n sample.compositionTimeOffset = 0;\n }\n if (typeof currentDts === 'bigint') {\n sample.pts = currentDts + window$2.BigInt(sample.compositionTimeOffset);\n currentDts += window$2.BigInt(sample.duration);\n } else {\n sample.pts = currentDts + sample.compositionTimeOffset;\n currentDts += sample.duration;\n }\n });\n allSamples = allSamples.concat(samples);\n });\n return allSamples;\n };\n /**\n * Parses out caption nals from an FMP4 segment's video tracks.\n *\n * @param {Uint8Array} segment - The bytes of a single segment\n * @param {Number} videoTrackId - The trackId of a video track in the segment\n * @return {Object.} A mapping of video trackId to\n * a list of seiNals found in that track\n **/\n\n var parseCaptionNals = function (segment, videoTrackId) {\n // To get the samples\n var trafs = findBox$1(segment, ['moof', 'traf']); // To get SEI NAL units\n\n var mdats = findBox$1(segment, ['mdat']);\n var captionNals = {};\n var mdatTrafPairs = []; // Pair up each traf with a mdat as moofs and mdats are in pairs\n\n mdats.forEach(function (mdat, index) {\n var matchingTraf = trafs[index];\n mdatTrafPairs.push({\n mdat: mdat,\n traf: matchingTraf\n });\n });\n mdatTrafPairs.forEach(function (pair) {\n var mdat = pair.mdat;\n var traf = pair.traf;\n var tfhd = findBox$1(traf, ['tfhd']); // Exactly 1 tfhd per traf\n\n var headerInfo = parseTfhd$1(tfhd[0]);\n var trackId = headerInfo.trackId;\n var tfdt = findBox$1(traf, ['tfdt']); // Either 0 or 1 tfdt per traf\n\n var baseMediaDecodeTime = tfdt.length > 0 ? parseTfdt$1(tfdt[0]).baseMediaDecodeTime : 0;\n var truns = findBox$1(traf, ['trun']);\n var samples;\n var result; // Only parse video data for the chosen video track\n\n if (videoTrackId === trackId && truns.length > 0) {\n samples = parseSamples(truns, baseMediaDecodeTime, headerInfo);\n result = findSeiNals(mdat, samples, trackId);\n if (!captionNals[trackId]) {\n captionNals[trackId] = {\n seiNals: [],\n logs: []\n };\n }\n captionNals[trackId].seiNals = captionNals[trackId].seiNals.concat(result.seiNals);\n captionNals[trackId].logs = captionNals[trackId].logs.concat(result.logs);\n }\n });\n return captionNals;\n };\n /**\n * Parses out inband captions from an MP4 container and returns\n * caption objects that can be used by WebVTT and the TextTrack API.\n * @see https://developer.mozilla.org/en-US/docs/Web/API/VTTCue\n * @see https://developer.mozilla.org/en-US/docs/Web/API/TextTrack\n * Assumes that `probe.getVideoTrackIds` and `probe.timescale` have been called first\n *\n * @param {Uint8Array} segment - The fmp4 segment containing embedded captions\n * @param {Number} trackId - The id of the video track to parse\n * @param {Number} timescale - The timescale for the video track from the init segment\n *\n * @return {?Object[]} parsedCaptions - A list of captions or null if no video tracks\n * @return {Number} parsedCaptions[].startTime - The time to show the caption in seconds\n * @return {Number} parsedCaptions[].endTime - The time to stop showing the caption in seconds\n * @return {Object[]} parsedCaptions[].content - A list of individual caption segments\n * @return {String} parsedCaptions[].content.text - The visible content of the caption segment\n * @return {Number} parsedCaptions[].content.line - The line height from 1-15 for positioning of the caption segment\n * @return {Number} parsedCaptions[].content.position - The column indent percentage for cue positioning from 10-80\n **/\n\n var parseEmbeddedCaptions = function (segment, trackId, timescale) {\n var captionNals; // the ISO-BMFF spec says that trackId can't be zero, but there's some broken content out there\n\n if (trackId === null) {\n return null;\n }\n captionNals = parseCaptionNals(segment, trackId);\n var trackNals = captionNals[trackId] || {};\n return {\n seiNals: trackNals.seiNals,\n logs: trackNals.logs,\n timescale: timescale\n };\n };\n /**\n * Converts SEI NALUs into captions that can be used by video.js\n **/\n\n var CaptionParser = function () {\n var isInitialized = false;\n var captionStream; // Stores segments seen before trackId and timescale are set\n\n var segmentCache; // Stores video track ID of the track being parsed\n\n var trackId; // Stores the timescale of the track being parsed\n\n var timescale; // Stores captions parsed so far\n\n var parsedCaptions; // Stores whether we are receiving partial data or not\n\n var parsingPartial;\n /**\n * A method to indicate whether a CaptionParser has been initalized\n * @returns {Boolean}\n **/\n\n this.isInitialized = function () {\n return isInitialized;\n };\n /**\n * Initializes the underlying CaptionStream, SEI NAL parsing\n * and management, and caption collection\n **/\n\n this.init = function (options) {\n captionStream = new CaptionStream();\n isInitialized = true;\n parsingPartial = options ? options.isPartial : false; // Collect dispatched captions\n\n captionStream.on('data', function (event) {\n // Convert to seconds in the source's timescale\n event.startTime = event.startPts / timescale;\n event.endTime = event.endPts / timescale;\n parsedCaptions.captions.push(event);\n parsedCaptions.captionStreams[event.stream] = true;\n });\n captionStream.on('log', function (log) {\n parsedCaptions.logs.push(log);\n });\n };\n /**\n * Determines if a new video track will be selected\n * or if the timescale changed\n * @return {Boolean}\n **/\n\n this.isNewInit = function (videoTrackIds, timescales) {\n if (videoTrackIds && videoTrackIds.length === 0 || timescales && typeof timescales === 'object' && Object.keys(timescales).length === 0) {\n return false;\n }\n return trackId !== videoTrackIds[0] || timescale !== timescales[trackId];\n };\n /**\n * Parses out SEI captions and interacts with underlying\n * CaptionStream to return dispatched captions\n *\n * @param {Uint8Array} segment - The fmp4 segment containing embedded captions\n * @param {Number[]} videoTrackIds - A list of video tracks found in the init segment\n * @param {Object.} timescales - The timescales found in the init segment\n * @see parseEmbeddedCaptions\n * @see m2ts/caption-stream.js\n **/\n\n this.parse = function (segment, videoTrackIds, timescales) {\n var parsedData;\n if (!this.isInitialized()) {\n return null; // This is not likely to be a video segment\n } else if (!videoTrackIds || !timescales) {\n return null;\n } else if (this.isNewInit(videoTrackIds, timescales)) {\n // Use the first video track only as there is no\n // mechanism to switch to other video tracks\n trackId = videoTrackIds[0];\n timescale = timescales[trackId]; // If an init segment has not been seen yet, hold onto segment\n // data until we have one.\n // the ISO-BMFF spec says that trackId can't be zero, but there's some broken content out there\n } else if (trackId === null || !timescale) {\n segmentCache.push(segment);\n return null;\n } // Now that a timescale and trackId is set, parse cached segments\n\n while (segmentCache.length > 0) {\n var cachedSegment = segmentCache.shift();\n this.parse(cachedSegment, videoTrackIds, timescales);\n }\n parsedData = parseEmbeddedCaptions(segment, trackId, timescale);\n if (parsedData && parsedData.logs) {\n parsedCaptions.logs = parsedCaptions.logs.concat(parsedData.logs);\n }\n if (parsedData === null || !parsedData.seiNals) {\n if (parsedCaptions.logs.length) {\n return {\n logs: parsedCaptions.logs,\n captions: [],\n captionStreams: []\n };\n }\n return null;\n }\n this.pushNals(parsedData.seiNals); // Force the parsed captions to be dispatched\n\n this.flushStream();\n return parsedCaptions;\n };\n /**\n * Pushes SEI NALUs onto CaptionStream\n * @param {Object[]} nals - A list of SEI nals parsed using `parseCaptionNals`\n * Assumes that `parseCaptionNals` has been called first\n * @see m2ts/caption-stream.js\n **/\n\n this.pushNals = function (nals) {\n if (!this.isInitialized() || !nals || nals.length === 0) {\n return null;\n }\n nals.forEach(function (nal) {\n captionStream.push(nal);\n });\n };\n /**\n * Flushes underlying CaptionStream to dispatch processed, displayable captions\n * @see m2ts/caption-stream.js\n **/\n\n this.flushStream = function () {\n if (!this.isInitialized()) {\n return null;\n }\n if (!parsingPartial) {\n captionStream.flush();\n } else {\n captionStream.partialFlush();\n }\n };\n /**\n * Reset caption buckets for new data\n **/\n\n this.clearParsedCaptions = function () {\n parsedCaptions.captions = [];\n parsedCaptions.captionStreams = {};\n parsedCaptions.logs = [];\n };\n /**\n * Resets underlying CaptionStream\n * @see m2ts/caption-stream.js\n **/\n\n this.resetCaptionStream = function () {\n if (!this.isInitialized()) {\n return null;\n }\n captionStream.reset();\n };\n /**\n * Convenience method to clear all captions flushed from the\n * CaptionStream and still being parsed\n * @see m2ts/caption-stream.js\n **/\n\n this.clearAllCaptions = function () {\n this.clearParsedCaptions();\n this.resetCaptionStream();\n };\n /**\n * Reset caption parser\n **/\n\n this.reset = function () {\n segmentCache = [];\n trackId = null;\n timescale = null;\n if (!parsedCaptions) {\n parsedCaptions = {\n captions: [],\n // CC1, CC2, CC3, CC4\n captionStreams: {},\n logs: []\n };\n } else {\n this.clearParsedCaptions();\n }\n this.resetCaptionStream();\n };\n this.reset();\n };\n var captionParser = CaptionParser;\n /**\n * Returns the first string in the data array ending with a null char '\\0'\n * @param {UInt8} data \n * @returns the string with the null char\n */\n\n var uint8ToCString$1 = function (data) {\n var index = 0;\n var curChar = String.fromCharCode(data[index]);\n var retString = '';\n while (curChar !== '\\0') {\n retString += curChar;\n index++;\n curChar = String.fromCharCode(data[index]);\n } // Add nullChar\n\n retString += curChar;\n return retString;\n };\n var string = {\n uint8ToCString: uint8ToCString$1\n };\n var uint8ToCString = string.uint8ToCString;\n var getUint64$1 = numbers.getUint64;\n /**\n * Based on: ISO/IEC 23009 Section: 5.10.3.3\n * References:\n * https://dashif-documents.azurewebsites.net/Events/master/event.html#emsg-format\n * https://aomediacodec.github.io/id3-emsg/\n * \n * Takes emsg box data as a uint8 array and returns a emsg box object\n * @param {UInt8Array} boxData data from emsg box\n * @returns A parsed emsg box object\n */\n\n var parseEmsgBox = function (boxData) {\n // version + flags\n var offset = 4;\n var version = boxData[0];\n var scheme_id_uri, value, timescale, presentation_time, presentation_time_delta, event_duration, id, message_data;\n if (version === 0) {\n scheme_id_uri = uint8ToCString(boxData.subarray(offset));\n offset += scheme_id_uri.length;\n value = uint8ToCString(boxData.subarray(offset));\n offset += value.length;\n var dv = new DataView(boxData.buffer);\n timescale = dv.getUint32(offset);\n offset += 4;\n presentation_time_delta = dv.getUint32(offset);\n offset += 4;\n event_duration = dv.getUint32(offset);\n offset += 4;\n id = dv.getUint32(offset);\n offset += 4;\n } else if (version === 1) {\n var dv = new DataView(boxData.buffer);\n timescale = dv.getUint32(offset);\n offset += 4;\n presentation_time = getUint64$1(boxData.subarray(offset));\n offset += 8;\n event_duration = dv.getUint32(offset);\n offset += 4;\n id = dv.getUint32(offset);\n offset += 4;\n scheme_id_uri = uint8ToCString(boxData.subarray(offset));\n offset += scheme_id_uri.length;\n value = uint8ToCString(boxData.subarray(offset));\n offset += value.length;\n }\n message_data = new Uint8Array(boxData.subarray(offset, boxData.byteLength));\n var emsgBox = {\n scheme_id_uri,\n value,\n // if timescale is undefined or 0 set to 1 \n timescale: timescale ? timescale : 1,\n presentation_time,\n presentation_time_delta,\n event_duration,\n id,\n message_data\n };\n return isValidEmsgBox(version, emsgBox) ? emsgBox : undefined;\n };\n /**\n * Scales a presentation time or time delta with an offset with a provided timescale\n * @param {number} presentationTime \n * @param {number} timescale \n * @param {number} timeDelta \n * @param {number} offset \n * @returns the scaled time as a number\n */\n\n var scaleTime = function (presentationTime, timescale, timeDelta, offset) {\n return presentationTime || presentationTime === 0 ? presentationTime / timescale : offset + timeDelta / timescale;\n };\n /**\n * Checks the emsg box data for validity based on the version\n * @param {number} version of the emsg box to validate\n * @param {Object} emsg the emsg data to validate\n * @returns if the box is valid as a boolean\n */\n\n var isValidEmsgBox = function (version, emsg) {\n var hasScheme = emsg.scheme_id_uri !== '\\0';\n var isValidV0Box = version === 0 && isDefined(emsg.presentation_time_delta) && hasScheme;\n var isValidV1Box = version === 1 && isDefined(emsg.presentation_time) && hasScheme; // Only valid versions of emsg are 0 and 1\n\n return !(version > 1) && isValidV0Box || isValidV1Box;\n }; // Utility function to check if an object is defined\n\n var isDefined = function (data) {\n return data !== undefined || data !== null;\n };\n var emsg$1 = {\n parseEmsgBox: parseEmsgBox,\n scaleTime: scaleTime\n };\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * Utilities to detect basic properties and metadata about MP4s.\n */\n\n var toUnsigned = bin.toUnsigned;\n var toHexString = bin.toHexString;\n var findBox = findBox_1;\n var parseType$1 = parseType_1;\n var emsg = emsg$1;\n var parseTfhd = parseTfhd$2;\n var parseTrun = parseTrun$2;\n var parseTfdt = parseTfdt$2;\n var getUint64 = numbers.getUint64;\n var timescale, startTime, compositionStartTime, getVideoTrackIds, getTracks, getTimescaleFromMediaHeader, getEmsgID3;\n var window$1 = window_1;\n var parseId3Frames = parseId3.parseId3Frames;\n /**\n * Parses an MP4 initialization segment and extracts the timescale\n * values for any declared tracks. Timescale values indicate the\n * number of clock ticks per second to assume for time-based values\n * elsewhere in the MP4.\n *\n * To determine the start time of an MP4, you need two pieces of\n * information: the timescale unit and the earliest base media decode\n * time. Multiple timescales can be specified within an MP4 but the\n * base media decode time is always expressed in the timescale from\n * the media header box for the track:\n * ```\n * moov > trak > mdia > mdhd.timescale\n * ```\n * @param init {Uint8Array} the bytes of the init segment\n * @return {object} a hash of track ids to timescale values or null if\n * the init segment is malformed.\n */\n\n timescale = function (init) {\n var result = {},\n traks = findBox(init, ['moov', 'trak']); // mdhd timescale\n\n return traks.reduce(function (result, trak) {\n var tkhd, version, index, id, mdhd;\n tkhd = findBox(trak, ['tkhd'])[0];\n if (!tkhd) {\n return null;\n }\n version = tkhd[0];\n index = version === 0 ? 12 : 20;\n id = toUnsigned(tkhd[index] << 24 | tkhd[index + 1] << 16 | tkhd[index + 2] << 8 | tkhd[index + 3]);\n mdhd = findBox(trak, ['mdia', 'mdhd'])[0];\n if (!mdhd) {\n return null;\n }\n version = mdhd[0];\n index = version === 0 ? 12 : 20;\n result[id] = toUnsigned(mdhd[index] << 24 | mdhd[index + 1] << 16 | mdhd[index + 2] << 8 | mdhd[index + 3]);\n return result;\n }, result);\n };\n /**\n * Determine the base media decode start time, in seconds, for an MP4\n * fragment. If multiple fragments are specified, the earliest time is\n * returned.\n *\n * The base media decode time can be parsed from track fragment\n * metadata:\n * ```\n * moof > traf > tfdt.baseMediaDecodeTime\n * ```\n * It requires the timescale value from the mdhd to interpret.\n *\n * @param timescale {object} a hash of track ids to timescale values.\n * @return {number} the earliest base media decode start time for the\n * fragment, in seconds\n */\n\n startTime = function (timescale, fragment) {\n var trafs; // we need info from two childrend of each track fragment box\n\n trafs = findBox(fragment, ['moof', 'traf']); // determine the start times for each track\n\n var lowestTime = trafs.reduce(function (acc, traf) {\n var tfhd = findBox(traf, ['tfhd'])[0]; // get the track id from the tfhd\n\n var id = toUnsigned(tfhd[4] << 24 | tfhd[5] << 16 | tfhd[6] << 8 | tfhd[7]); // assume a 90kHz clock if no timescale was specified\n\n var scale = timescale[id] || 90e3; // get the base media decode time from the tfdt\n\n var tfdt = findBox(traf, ['tfdt'])[0];\n var dv = new DataView(tfdt.buffer, tfdt.byteOffset, tfdt.byteLength);\n var baseTime; // version 1 is 64 bit\n\n if (tfdt[0] === 1) {\n baseTime = getUint64(tfdt.subarray(4, 12));\n } else {\n baseTime = dv.getUint32(4);\n } // convert base time to seconds if it is a valid number.\n\n let seconds;\n if (typeof baseTime === 'bigint') {\n seconds = baseTime / window$1.BigInt(scale);\n } else if (typeof baseTime === 'number' && !isNaN(baseTime)) {\n seconds = baseTime / scale;\n }\n if (seconds < Number.MAX_SAFE_INTEGER) {\n seconds = Number(seconds);\n }\n if (seconds < acc) {\n acc = seconds;\n }\n return acc;\n }, Infinity);\n return typeof lowestTime === 'bigint' || isFinite(lowestTime) ? lowestTime : 0;\n };\n /**\n * Determine the composition start, in seconds, for an MP4\n * fragment.\n *\n * The composition start time of a fragment can be calculated using the base\n * media decode time, composition time offset, and timescale, as follows:\n *\n * compositionStartTime = (baseMediaDecodeTime + compositionTimeOffset) / timescale\n *\n * All of the aforementioned information is contained within a media fragment's\n * `traf` box, except for timescale info, which comes from the initialization\n * segment, so a track id (also contained within a `traf`) is also necessary to\n * associate it with a timescale\n *\n *\n * @param timescales {object} - a hash of track ids to timescale values.\n * @param fragment {Unit8Array} - the bytes of a media segment\n * @return {number} the composition start time for the fragment, in seconds\n **/\n\n compositionStartTime = function (timescales, fragment) {\n var trafBoxes = findBox(fragment, ['moof', 'traf']);\n var baseMediaDecodeTime = 0;\n var compositionTimeOffset = 0;\n var trackId;\n if (trafBoxes && trafBoxes.length) {\n // The spec states that track run samples contained within a `traf` box are contiguous, but\n // it does not explicitly state whether the `traf` boxes themselves are contiguous.\n // We will assume that they are, so we only need the first to calculate start time.\n var tfhd = findBox(trafBoxes[0], ['tfhd'])[0];\n var trun = findBox(trafBoxes[0], ['trun'])[0];\n var tfdt = findBox(trafBoxes[0], ['tfdt'])[0];\n if (tfhd) {\n var parsedTfhd = parseTfhd(tfhd);\n trackId = parsedTfhd.trackId;\n }\n if (tfdt) {\n var parsedTfdt = parseTfdt(tfdt);\n baseMediaDecodeTime = parsedTfdt.baseMediaDecodeTime;\n }\n if (trun) {\n var parsedTrun = parseTrun(trun);\n if (parsedTrun.samples && parsedTrun.samples.length) {\n compositionTimeOffset = parsedTrun.samples[0].compositionTimeOffset || 0;\n }\n }\n } // Get timescale for this specific track. Assume a 90kHz clock if no timescale was\n // specified.\n\n var timescale = timescales[trackId] || 90e3; // return the composition start time, in seconds\n\n if (typeof baseMediaDecodeTime === 'bigint') {\n compositionTimeOffset = window$1.BigInt(compositionTimeOffset);\n timescale = window$1.BigInt(timescale);\n }\n var result = (baseMediaDecodeTime + compositionTimeOffset) / timescale;\n if (typeof result === 'bigint' && result < Number.MAX_SAFE_INTEGER) {\n result = Number(result);\n }\n return result;\n };\n /**\n * Find the trackIds of the video tracks in this source.\n * Found by parsing the Handler Reference and Track Header Boxes:\n * moov > trak > mdia > hdlr\n * moov > trak > tkhd\n *\n * @param {Uint8Array} init - The bytes of the init segment for this source\n * @return {Number[]} A list of trackIds\n *\n * @see ISO-BMFF-12/2015, Section 8.4.3\n **/\n\n getVideoTrackIds = function (init) {\n var traks = findBox(init, ['moov', 'trak']);\n var videoTrackIds = [];\n traks.forEach(function (trak) {\n var hdlrs = findBox(trak, ['mdia', 'hdlr']);\n var tkhds = findBox(trak, ['tkhd']);\n hdlrs.forEach(function (hdlr, index) {\n var handlerType = parseType$1(hdlr.subarray(8, 12));\n var tkhd = tkhds[index];\n var view;\n var version;\n var trackId;\n if (handlerType === 'vide') {\n view = new DataView(tkhd.buffer, tkhd.byteOffset, tkhd.byteLength);\n version = view.getUint8(0);\n trackId = version === 0 ? view.getUint32(12) : view.getUint32(20);\n videoTrackIds.push(trackId);\n }\n });\n });\n return videoTrackIds;\n };\n getTimescaleFromMediaHeader = function (mdhd) {\n // mdhd is a FullBox, meaning it will have its own version as the first byte\n var version = mdhd[0];\n var index = version === 0 ? 12 : 20;\n return toUnsigned(mdhd[index] << 24 | mdhd[index + 1] << 16 | mdhd[index + 2] << 8 | mdhd[index + 3]);\n };\n /**\n * Get all the video, audio, and hint tracks from a non fragmented\n * mp4 segment\n */\n\n getTracks = function (init) {\n var traks = findBox(init, ['moov', 'trak']);\n var tracks = [];\n traks.forEach(function (trak) {\n var track = {};\n var tkhd = findBox(trak, ['tkhd'])[0];\n var view, tkhdVersion; // id\n\n if (tkhd) {\n view = new DataView(tkhd.buffer, tkhd.byteOffset, tkhd.byteLength);\n tkhdVersion = view.getUint8(0);\n track.id = tkhdVersion === 0 ? view.getUint32(12) : view.getUint32(20);\n }\n var hdlr = findBox(trak, ['mdia', 'hdlr'])[0]; // type\n\n if (hdlr) {\n var type = parseType$1(hdlr.subarray(8, 12));\n if (type === 'vide') {\n track.type = 'video';\n } else if (type === 'soun') {\n track.type = 'audio';\n } else {\n track.type = type;\n }\n } // codec\n\n var stsd = findBox(trak, ['mdia', 'minf', 'stbl', 'stsd'])[0];\n if (stsd) {\n var sampleDescriptions = stsd.subarray(8); // gives the codec type string\n\n track.codec = parseType$1(sampleDescriptions.subarray(4, 8));\n var codecBox = findBox(sampleDescriptions, [track.codec])[0];\n var codecConfig, codecConfigType;\n if (codecBox) {\n // https://tools.ietf.org/html/rfc6381#section-3.3\n if (/^[asm]vc[1-9]$/i.test(track.codec)) {\n // we don't need anything but the \"config\" parameter of the\n // avc1 codecBox\n codecConfig = codecBox.subarray(78);\n codecConfigType = parseType$1(codecConfig.subarray(4, 8));\n if (codecConfigType === 'avcC' && codecConfig.length > 11) {\n track.codec += '.'; // left padded with zeroes for single digit hex\n // profile idc\n\n track.codec += toHexString(codecConfig[9]); // the byte containing the constraint_set flags\n\n track.codec += toHexString(codecConfig[10]); // level idc\n\n track.codec += toHexString(codecConfig[11]);\n } else {\n // TODO: show a warning that we couldn't parse the codec\n // and are using the default\n track.codec = 'avc1.4d400d';\n }\n } else if (/^mp4[a,v]$/i.test(track.codec)) {\n // we do not need anything but the streamDescriptor of the mp4a codecBox\n codecConfig = codecBox.subarray(28);\n codecConfigType = parseType$1(codecConfig.subarray(4, 8));\n if (codecConfigType === 'esds' && codecConfig.length > 20 && codecConfig[19] !== 0) {\n track.codec += '.' + toHexString(codecConfig[19]); // this value is only a single digit\n\n track.codec += '.' + toHexString(codecConfig[20] >>> 2 & 0x3f).replace(/^0/, '');\n } else {\n // TODO: show a warning that we couldn't parse the codec\n // and are using the default\n track.codec = 'mp4a.40.2';\n }\n } else {\n // flac, opus, etc\n track.codec = track.codec.toLowerCase();\n }\n }\n }\n var mdhd = findBox(trak, ['mdia', 'mdhd'])[0];\n if (mdhd) {\n track.timescale = getTimescaleFromMediaHeader(mdhd);\n }\n tracks.push(track);\n });\n return tracks;\n };\n /**\n * Returns an array of emsg ID3 data from the provided segmentData.\n * An offset can also be provided as the Latest Arrival Time to calculate \n * the Event Start Time of v0 EMSG boxes. \n * See: https://dashif-documents.azurewebsites.net/Events/master/event.html#Inband-event-timing\n * \n * @param {Uint8Array} segmentData the segment byte array.\n * @param {number} offset the segment start time or Latest Arrival Time, \n * @return {Object[]} an array of ID3 parsed from EMSG boxes\n */\n\n getEmsgID3 = function (segmentData, offset = 0) {\n var emsgBoxes = findBox(segmentData, ['emsg']);\n return emsgBoxes.map(data => {\n var parsedBox = emsg.parseEmsgBox(new Uint8Array(data));\n var parsedId3Frames = parseId3Frames(parsedBox.message_data);\n return {\n cueTime: emsg.scaleTime(parsedBox.presentation_time, parsedBox.timescale, parsedBox.presentation_time_delta, offset),\n duration: emsg.scaleTime(parsedBox.event_duration, parsedBox.timescale),\n frames: parsedId3Frames\n };\n });\n };\n var probe$2 = {\n // export mp4 inspector's findBox and parseType for backwards compatibility\n findBox: findBox,\n parseType: parseType$1,\n timescale: timescale,\n startTime: startTime,\n compositionStartTime: compositionStartTime,\n videoTrackIds: getVideoTrackIds,\n tracks: getTracks,\n getTimescaleFromMediaHeader: getTimescaleFromMediaHeader,\n getEmsgID3: getEmsgID3\n };\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * Utilities to detect basic properties and metadata about TS Segments.\n */\n\n var StreamTypes$1 = streamTypes;\n var parsePid = function (packet) {\n var pid = packet[1] & 0x1f;\n pid <<= 8;\n pid |= packet[2];\n return pid;\n };\n var parsePayloadUnitStartIndicator = function (packet) {\n return !!(packet[1] & 0x40);\n };\n var parseAdaptionField = function (packet) {\n var offset = 0; // if an adaption field is present, its length is specified by the\n // fifth byte of the TS packet header. The adaptation field is\n // used to add stuffing to PES packets that don't fill a complete\n // TS packet, and to specify some forms of timing and control data\n // that we do not currently use.\n\n if ((packet[3] & 0x30) >>> 4 > 0x01) {\n offset += packet[4] + 1;\n }\n return offset;\n };\n var parseType = function (packet, pmtPid) {\n var pid = parsePid(packet);\n if (pid === 0) {\n return 'pat';\n } else if (pid === pmtPid) {\n return 'pmt';\n } else if (pmtPid) {\n return 'pes';\n }\n return null;\n };\n var parsePat = function (packet) {\n var pusi = parsePayloadUnitStartIndicator(packet);\n var offset = 4 + parseAdaptionField(packet);\n if (pusi) {\n offset += packet[offset] + 1;\n }\n return (packet[offset + 10] & 0x1f) << 8 | packet[offset + 11];\n };\n var parsePmt = function (packet) {\n var programMapTable = {};\n var pusi = parsePayloadUnitStartIndicator(packet);\n var payloadOffset = 4 + parseAdaptionField(packet);\n if (pusi) {\n payloadOffset += packet[payloadOffset] + 1;\n } // PMTs can be sent ahead of the time when they should actually\n // take effect. We don't believe this should ever be the case\n // for HLS but we'll ignore \"forward\" PMT declarations if we see\n // them. Future PMT declarations have the current_next_indicator\n // set to zero.\n\n if (!(packet[payloadOffset + 5] & 0x01)) {\n return;\n }\n var sectionLength, tableEnd, programInfoLength; // the mapping table ends at the end of the current section\n\n sectionLength = (packet[payloadOffset + 1] & 0x0f) << 8 | packet[payloadOffset + 2];\n tableEnd = 3 + sectionLength - 4; // to determine where the table is, we have to figure out how\n // long the program info descriptors are\n\n programInfoLength = (packet[payloadOffset + 10] & 0x0f) << 8 | packet[payloadOffset + 11]; // advance the offset to the first entry in the mapping table\n\n var offset = 12 + programInfoLength;\n while (offset < tableEnd) {\n var i = payloadOffset + offset; // add an entry that maps the elementary_pid to the stream_type\n\n programMapTable[(packet[i + 1] & 0x1F) << 8 | packet[i + 2]] = packet[i]; // move to the next table entry\n // skip past the elementary stream descriptors, if present\n\n offset += ((packet[i + 3] & 0x0F) << 8 | packet[i + 4]) + 5;\n }\n return programMapTable;\n };\n var parsePesType = function (packet, programMapTable) {\n var pid = parsePid(packet);\n var type = programMapTable[pid];\n switch (type) {\n case StreamTypes$1.H264_STREAM_TYPE:\n return 'video';\n case StreamTypes$1.ADTS_STREAM_TYPE:\n return 'audio';\n case StreamTypes$1.METADATA_STREAM_TYPE:\n return 'timed-metadata';\n default:\n return null;\n }\n };\n var parsePesTime = function (packet) {\n var pusi = parsePayloadUnitStartIndicator(packet);\n if (!pusi) {\n return null;\n }\n var offset = 4 + parseAdaptionField(packet);\n if (offset >= packet.byteLength) {\n // From the H 222.0 MPEG-TS spec\n // \"For transport stream packets carrying PES packets, stuffing is needed when there\n // is insufficient PES packet data to completely fill the transport stream packet\n // payload bytes. Stuffing is accomplished by defining an adaptation field longer than\n // the sum of the lengths of the data elements in it, so that the payload bytes\n // remaining after the adaptation field exactly accommodates the available PES packet\n // data.\"\n //\n // If the offset is >= the length of the packet, then the packet contains no data\n // and instead is just adaption field stuffing bytes\n return null;\n }\n var pes = null;\n var ptsDtsFlags; // PES packets may be annotated with a PTS value, or a PTS value\n // and a DTS value. Determine what combination of values is\n // available to work with.\n\n ptsDtsFlags = packet[offset + 7]; // PTS and DTS are normally stored as a 33-bit number. Javascript\n // performs all bitwise operations on 32-bit integers but javascript\n // supports a much greater range (52-bits) of integer using standard\n // mathematical operations.\n // We construct a 31-bit value using bitwise operators over the 31\n // most significant bits and then multiply by 4 (equal to a left-shift\n // of 2) before we add the final 2 least significant bits of the\n // timestamp (equal to an OR.)\n\n if (ptsDtsFlags & 0xC0) {\n pes = {}; // the PTS and DTS are not written out directly. For information\n // on how they are encoded, see\n // http://dvd.sourceforge.net/dvdinfo/pes-hdr.html\n\n pes.pts = (packet[offset + 9] & 0x0E) << 27 | (packet[offset + 10] & 0xFF) << 20 | (packet[offset + 11] & 0xFE) << 12 | (packet[offset + 12] & 0xFF) << 5 | (packet[offset + 13] & 0xFE) >>> 3;\n pes.pts *= 4; // Left shift by 2\n\n pes.pts += (packet[offset + 13] & 0x06) >>> 1; // OR by the two LSBs\n\n pes.dts = pes.pts;\n if (ptsDtsFlags & 0x40) {\n pes.dts = (packet[offset + 14] & 0x0E) << 27 | (packet[offset + 15] & 0xFF) << 20 | (packet[offset + 16] & 0xFE) << 12 | (packet[offset + 17] & 0xFF) << 5 | (packet[offset + 18] & 0xFE) >>> 3;\n pes.dts *= 4; // Left shift by 2\n\n pes.dts += (packet[offset + 18] & 0x06) >>> 1; // OR by the two LSBs\n }\n }\n\n return pes;\n };\n var parseNalUnitType = function (type) {\n switch (type) {\n case 0x05:\n return 'slice_layer_without_partitioning_rbsp_idr';\n case 0x06:\n return 'sei_rbsp';\n case 0x07:\n return 'seq_parameter_set_rbsp';\n case 0x08:\n return 'pic_parameter_set_rbsp';\n case 0x09:\n return 'access_unit_delimiter_rbsp';\n default:\n return null;\n }\n };\n var videoPacketContainsKeyFrame = function (packet) {\n var offset = 4 + parseAdaptionField(packet);\n var frameBuffer = packet.subarray(offset);\n var frameI = 0;\n var frameSyncPoint = 0;\n var foundKeyFrame = false;\n var nalType; // advance the sync point to a NAL start, if necessary\n\n for (; frameSyncPoint < frameBuffer.byteLength - 3; frameSyncPoint++) {\n if (frameBuffer[frameSyncPoint + 2] === 1) {\n // the sync point is properly aligned\n frameI = frameSyncPoint + 5;\n break;\n }\n }\n while (frameI < frameBuffer.byteLength) {\n // look at the current byte to determine if we've hit the end of\n // a NAL unit boundary\n switch (frameBuffer[frameI]) {\n case 0:\n // skip past non-sync sequences\n if (frameBuffer[frameI - 1] !== 0) {\n frameI += 2;\n break;\n } else if (frameBuffer[frameI - 2] !== 0) {\n frameI++;\n break;\n }\n if (frameSyncPoint + 3 !== frameI - 2) {\n nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);\n if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {\n foundKeyFrame = true;\n }\n } // drop trailing zeroes\n\n do {\n frameI++;\n } while (frameBuffer[frameI] !== 1 && frameI < frameBuffer.length);\n frameSyncPoint = frameI - 2;\n frameI += 3;\n break;\n case 1:\n // skip past non-sync sequences\n if (frameBuffer[frameI - 1] !== 0 || frameBuffer[frameI - 2] !== 0) {\n frameI += 3;\n break;\n }\n nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);\n if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {\n foundKeyFrame = true;\n }\n frameSyncPoint = frameI - 2;\n frameI += 3;\n break;\n default:\n // the current byte isn't a one or zero, so it cannot be part\n // of a sync sequence\n frameI += 3;\n break;\n }\n }\n frameBuffer = frameBuffer.subarray(frameSyncPoint);\n frameI -= frameSyncPoint;\n frameSyncPoint = 0; // parse the final nal\n\n if (frameBuffer && frameBuffer.byteLength > 3) {\n nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);\n if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {\n foundKeyFrame = true;\n }\n }\n return foundKeyFrame;\n };\n var probe$1 = {\n parseType: parseType,\n parsePat: parsePat,\n parsePmt: parsePmt,\n parsePayloadUnitStartIndicator: parsePayloadUnitStartIndicator,\n parsePesType: parsePesType,\n parsePesTime: parsePesTime,\n videoPacketContainsKeyFrame: videoPacketContainsKeyFrame\n };\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * Parse mpeg2 transport stream packets to extract basic timing information\n */\n\n var StreamTypes = streamTypes;\n var handleRollover = timestampRolloverStream.handleRollover;\n var probe = {};\n probe.ts = probe$1;\n probe.aac = utils;\n var ONE_SECOND_IN_TS = clock$2.ONE_SECOND_IN_TS;\n var MP2T_PACKET_LENGTH = 188,\n // bytes\n SYNC_BYTE = 0x47;\n /**\n * walks through segment data looking for pat and pmt packets to parse out\n * program map table information\n */\n\n var parsePsi_ = function (bytes, pmt) {\n var startIndex = 0,\n endIndex = MP2T_PACKET_LENGTH,\n packet,\n type;\n while (endIndex < bytes.byteLength) {\n // Look for a pair of start and end sync bytes in the data..\n if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {\n // We found a packet\n packet = bytes.subarray(startIndex, endIndex);\n type = probe.ts.parseType(packet, pmt.pid);\n switch (type) {\n case 'pat':\n pmt.pid = probe.ts.parsePat(packet);\n break;\n case 'pmt':\n var table = probe.ts.parsePmt(packet);\n pmt.table = pmt.table || {};\n Object.keys(table).forEach(function (key) {\n pmt.table[key] = table[key];\n });\n break;\n }\n startIndex += MP2T_PACKET_LENGTH;\n endIndex += MP2T_PACKET_LENGTH;\n continue;\n } // If we get here, we have somehow become de-synchronized and we need to step\n // forward one byte at a time until we find a pair of sync bytes that denote\n // a packet\n\n startIndex++;\n endIndex++;\n }\n };\n /**\n * walks through the segment data from the start and end to get timing information\n * for the first and last audio pes packets\n */\n\n var parseAudioPes_ = function (bytes, pmt, result) {\n var startIndex = 0,\n endIndex = MP2T_PACKET_LENGTH,\n packet,\n type,\n pesType,\n pusi,\n parsed;\n var endLoop = false; // Start walking from start of segment to get first audio packet\n\n while (endIndex <= bytes.byteLength) {\n // Look for a pair of start and end sync bytes in the data..\n if (bytes[startIndex] === SYNC_BYTE && (bytes[endIndex] === SYNC_BYTE || endIndex === bytes.byteLength)) {\n // We found a packet\n packet = bytes.subarray(startIndex, endIndex);\n type = probe.ts.parseType(packet, pmt.pid);\n switch (type) {\n case 'pes':\n pesType = probe.ts.parsePesType(packet, pmt.table);\n pusi = probe.ts.parsePayloadUnitStartIndicator(packet);\n if (pesType === 'audio' && pusi) {\n parsed = probe.ts.parsePesTime(packet);\n if (parsed) {\n parsed.type = 'audio';\n result.audio.push(parsed);\n endLoop = true;\n }\n }\n break;\n }\n if (endLoop) {\n break;\n }\n startIndex += MP2T_PACKET_LENGTH;\n endIndex += MP2T_PACKET_LENGTH;\n continue;\n } // If we get here, we have somehow become de-synchronized and we need to step\n // forward one byte at a time until we find a pair of sync bytes that denote\n // a packet\n\n startIndex++;\n endIndex++;\n } // Start walking from end of segment to get last audio packet\n\n endIndex = bytes.byteLength;\n startIndex = endIndex - MP2T_PACKET_LENGTH;\n endLoop = false;\n while (startIndex >= 0) {\n // Look for a pair of start and end sync bytes in the data..\n if (bytes[startIndex] === SYNC_BYTE && (bytes[endIndex] === SYNC_BYTE || endIndex === bytes.byteLength)) {\n // We found a packet\n packet = bytes.subarray(startIndex, endIndex);\n type = probe.ts.parseType(packet, pmt.pid);\n switch (type) {\n case 'pes':\n pesType = probe.ts.parsePesType(packet, pmt.table);\n pusi = probe.ts.parsePayloadUnitStartIndicator(packet);\n if (pesType === 'audio' && pusi) {\n parsed = probe.ts.parsePesTime(packet);\n if (parsed) {\n parsed.type = 'audio';\n result.audio.push(parsed);\n endLoop = true;\n }\n }\n break;\n }\n if (endLoop) {\n break;\n }\n startIndex -= MP2T_PACKET_LENGTH;\n endIndex -= MP2T_PACKET_LENGTH;\n continue;\n } // If we get here, we have somehow become de-synchronized and we need to step\n // forward one byte at a time until we find a pair of sync bytes that denote\n // a packet\n\n startIndex--;\n endIndex--;\n }\n };\n /**\n * walks through the segment data from the start and end to get timing information\n * for the first and last video pes packets as well as timing information for the first\n * key frame.\n */\n\n var parseVideoPes_ = function (bytes, pmt, result) {\n var startIndex = 0,\n endIndex = MP2T_PACKET_LENGTH,\n packet,\n type,\n pesType,\n pusi,\n parsed,\n frame,\n i,\n pes;\n var endLoop = false;\n var currentFrame = {\n data: [],\n size: 0\n }; // Start walking from start of segment to get first video packet\n\n while (endIndex < bytes.byteLength) {\n // Look for a pair of start and end sync bytes in the data..\n if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {\n // We found a packet\n packet = bytes.subarray(startIndex, endIndex);\n type = probe.ts.parseType(packet, pmt.pid);\n switch (type) {\n case 'pes':\n pesType = probe.ts.parsePesType(packet, pmt.table);\n pusi = probe.ts.parsePayloadUnitStartIndicator(packet);\n if (pesType === 'video') {\n if (pusi && !endLoop) {\n parsed = probe.ts.parsePesTime(packet);\n if (parsed) {\n parsed.type = 'video';\n result.video.push(parsed);\n endLoop = true;\n }\n }\n if (!result.firstKeyFrame) {\n if (pusi) {\n if (currentFrame.size !== 0) {\n frame = new Uint8Array(currentFrame.size);\n i = 0;\n while (currentFrame.data.length) {\n pes = currentFrame.data.shift();\n frame.set(pes, i);\n i += pes.byteLength;\n }\n if (probe.ts.videoPacketContainsKeyFrame(frame)) {\n var firstKeyFrame = probe.ts.parsePesTime(frame); // PTS/DTS may not be available. Simply *not* setting\n // the keyframe seems to work fine with HLS playback\n // and definitely preferable to a crash with TypeError...\n\n if (firstKeyFrame) {\n result.firstKeyFrame = firstKeyFrame;\n result.firstKeyFrame.type = 'video';\n } else {\n // eslint-disable-next-line\n console.warn('Failed to extract PTS/DTS from PES at first keyframe. ' + 'This could be an unusual TS segment, or else mux.js did not ' + 'parse your TS segment correctly. If you know your TS ' + 'segments do contain PTS/DTS on keyframes please file a bug ' + 'report! You can try ffprobe to double check for yourself.');\n }\n }\n currentFrame.size = 0;\n }\n }\n currentFrame.data.push(packet);\n currentFrame.size += packet.byteLength;\n }\n }\n break;\n }\n if (endLoop && result.firstKeyFrame) {\n break;\n }\n startIndex += MP2T_PACKET_LENGTH;\n endIndex += MP2T_PACKET_LENGTH;\n continue;\n } // If we get here, we have somehow become de-synchronized and we need to step\n // forward one byte at a time until we find a pair of sync bytes that denote\n // a packet\n\n startIndex++;\n endIndex++;\n } // Start walking from end of segment to get last video packet\n\n endIndex = bytes.byteLength;\n startIndex = endIndex - MP2T_PACKET_LENGTH;\n endLoop = false;\n while (startIndex >= 0) {\n // Look for a pair of start and end sync bytes in the data..\n if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {\n // We found a packet\n packet = bytes.subarray(startIndex, endIndex);\n type = probe.ts.parseType(packet, pmt.pid);\n switch (type) {\n case 'pes':\n pesType = probe.ts.parsePesType(packet, pmt.table);\n pusi = probe.ts.parsePayloadUnitStartIndicator(packet);\n if (pesType === 'video' && pusi) {\n parsed = probe.ts.parsePesTime(packet);\n if (parsed) {\n parsed.type = 'video';\n result.video.push(parsed);\n endLoop = true;\n }\n }\n break;\n }\n if (endLoop) {\n break;\n }\n startIndex -= MP2T_PACKET_LENGTH;\n endIndex -= MP2T_PACKET_LENGTH;\n continue;\n } // If we get here, we have somehow become de-synchronized and we need to step\n // forward one byte at a time until we find a pair of sync bytes that denote\n // a packet\n\n startIndex--;\n endIndex--;\n }\n };\n /**\n * Adjusts the timestamp information for the segment to account for\n * rollover and convert to seconds based on pes packet timescale (90khz clock)\n */\n\n var adjustTimestamp_ = function (segmentInfo, baseTimestamp) {\n if (segmentInfo.audio && segmentInfo.audio.length) {\n var audioBaseTimestamp = baseTimestamp;\n if (typeof audioBaseTimestamp === 'undefined' || isNaN(audioBaseTimestamp)) {\n audioBaseTimestamp = segmentInfo.audio[0].dts;\n }\n segmentInfo.audio.forEach(function (info) {\n info.dts = handleRollover(info.dts, audioBaseTimestamp);\n info.pts = handleRollover(info.pts, audioBaseTimestamp); // time in seconds\n\n info.dtsTime = info.dts / ONE_SECOND_IN_TS;\n info.ptsTime = info.pts / ONE_SECOND_IN_TS;\n });\n }\n if (segmentInfo.video && segmentInfo.video.length) {\n var videoBaseTimestamp = baseTimestamp;\n if (typeof videoBaseTimestamp === 'undefined' || isNaN(videoBaseTimestamp)) {\n videoBaseTimestamp = segmentInfo.video[0].dts;\n }\n segmentInfo.video.forEach(function (info) {\n info.dts = handleRollover(info.dts, videoBaseTimestamp);\n info.pts = handleRollover(info.pts, videoBaseTimestamp); // time in seconds\n\n info.dtsTime = info.dts / ONE_SECOND_IN_TS;\n info.ptsTime = info.pts / ONE_SECOND_IN_TS;\n });\n if (segmentInfo.firstKeyFrame) {\n var frame = segmentInfo.firstKeyFrame;\n frame.dts = handleRollover(frame.dts, videoBaseTimestamp);\n frame.pts = handleRollover(frame.pts, videoBaseTimestamp); // time in seconds\n\n frame.dtsTime = frame.dts / ONE_SECOND_IN_TS;\n frame.ptsTime = frame.pts / ONE_SECOND_IN_TS;\n }\n }\n };\n /**\n * inspects the aac data stream for start and end time information\n */\n\n var inspectAac_ = function (bytes) {\n var endLoop = false,\n audioCount = 0,\n sampleRate = null,\n timestamp = null,\n frameSize = 0,\n byteIndex = 0,\n packet;\n while (bytes.length - byteIndex >= 3) {\n var type = probe.aac.parseType(bytes, byteIndex);\n switch (type) {\n case 'timed-metadata':\n // Exit early because we don't have enough to parse\n // the ID3 tag header\n if (bytes.length - byteIndex < 10) {\n endLoop = true;\n break;\n }\n frameSize = probe.aac.parseId3TagSize(bytes, byteIndex); // Exit early if we don't have enough in the buffer\n // to emit a full packet\n\n if (frameSize > bytes.length) {\n endLoop = true;\n break;\n }\n if (timestamp === null) {\n packet = bytes.subarray(byteIndex, byteIndex + frameSize);\n timestamp = probe.aac.parseAacTimestamp(packet);\n }\n byteIndex += frameSize;\n break;\n case 'audio':\n // Exit early because we don't have enough to parse\n // the ADTS frame header\n if (bytes.length - byteIndex < 7) {\n endLoop = true;\n break;\n }\n frameSize = probe.aac.parseAdtsSize(bytes, byteIndex); // Exit early if we don't have enough in the buffer\n // to emit a full packet\n\n if (frameSize > bytes.length) {\n endLoop = true;\n break;\n }\n if (sampleRate === null) {\n packet = bytes.subarray(byteIndex, byteIndex + frameSize);\n sampleRate = probe.aac.parseSampleRate(packet);\n }\n audioCount++;\n byteIndex += frameSize;\n break;\n default:\n byteIndex++;\n break;\n }\n if (endLoop) {\n return null;\n }\n }\n if (sampleRate === null || timestamp === null) {\n return null;\n }\n var audioTimescale = ONE_SECOND_IN_TS / sampleRate;\n var result = {\n audio: [{\n type: 'audio',\n dts: timestamp,\n pts: timestamp\n }, {\n type: 'audio',\n dts: timestamp + audioCount * 1024 * audioTimescale,\n pts: timestamp + audioCount * 1024 * audioTimescale\n }]\n };\n return result;\n };\n /**\n * inspects the transport stream segment data for start and end time information\n * of the audio and video tracks (when present) as well as the first key frame's\n * start time.\n */\n\n var inspectTs_ = function (bytes) {\n var pmt = {\n pid: null,\n table: null\n };\n var result = {};\n parsePsi_(bytes, pmt);\n for (var pid in pmt.table) {\n if (pmt.table.hasOwnProperty(pid)) {\n var type = pmt.table[pid];\n switch (type) {\n case StreamTypes.H264_STREAM_TYPE:\n result.video = [];\n parseVideoPes_(bytes, pmt, result);\n if (result.video.length === 0) {\n delete result.video;\n }\n break;\n case StreamTypes.ADTS_STREAM_TYPE:\n result.audio = [];\n parseAudioPes_(bytes, pmt, result);\n if (result.audio.length === 0) {\n delete result.audio;\n }\n break;\n }\n }\n }\n return result;\n };\n /**\n * Inspects segment byte data and returns an object with start and end timing information\n *\n * @param {Uint8Array} bytes The segment byte data\n * @param {Number} baseTimestamp Relative reference timestamp used when adjusting frame\n * timestamps for rollover. This value must be in 90khz clock.\n * @return {Object} Object containing start and end frame timing info of segment.\n */\n\n var inspect = function (bytes, baseTimestamp) {\n var isAacData = probe.aac.isLikelyAacData(bytes);\n var result;\n if (isAacData) {\n result = inspectAac_(bytes);\n } else {\n result = inspectTs_(bytes);\n }\n if (!result || !result.audio && !result.video) {\n return null;\n }\n adjustTimestamp_(result, baseTimestamp);\n return result;\n };\n var tsInspector = {\n inspect: inspect,\n parseAudioPes_: parseAudioPes_\n };\n /* global self */\n\n /**\n * Re-emits transmuxer events by converting them into messages to the\n * world outside the worker.\n *\n * @param {Object} transmuxer the transmuxer to wire events on\n * @private\n */\n\n const wireTransmuxerEvents = function (self, transmuxer) {\n transmuxer.on('data', function (segment) {\n // transfer ownership of the underlying ArrayBuffer\n // instead of doing a copy to save memory\n // ArrayBuffers are transferable but generic TypedArrays are not\n // @link https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Using_web_workers#Passing_data_by_transferring_ownership_(transferable_objects)\n const initArray = segment.initSegment;\n segment.initSegment = {\n data: initArray.buffer,\n byteOffset: initArray.byteOffset,\n byteLength: initArray.byteLength\n };\n const typedArray = segment.data;\n segment.data = typedArray.buffer;\n self.postMessage({\n action: 'data',\n segment,\n byteOffset: typedArray.byteOffset,\n byteLength: typedArray.byteLength\n }, [segment.data]);\n });\n transmuxer.on('done', function (data) {\n self.postMessage({\n action: 'done'\n });\n });\n transmuxer.on('gopInfo', function (gopInfo) {\n self.postMessage({\n action: 'gopInfo',\n gopInfo\n });\n });\n transmuxer.on('videoSegmentTimingInfo', function (timingInfo) {\n const videoSegmentTimingInfo = {\n start: {\n decode: clock$2.videoTsToSeconds(timingInfo.start.dts),\n presentation: clock$2.videoTsToSeconds(timingInfo.start.pts)\n },\n end: {\n decode: clock$2.videoTsToSeconds(timingInfo.end.dts),\n presentation: clock$2.videoTsToSeconds(timingInfo.end.pts)\n },\n baseMediaDecodeTime: clock$2.videoTsToSeconds(timingInfo.baseMediaDecodeTime)\n };\n if (timingInfo.prependedContentDuration) {\n videoSegmentTimingInfo.prependedContentDuration = clock$2.videoTsToSeconds(timingInfo.prependedContentDuration);\n }\n self.postMessage({\n action: 'videoSegmentTimingInfo',\n videoSegmentTimingInfo\n });\n });\n transmuxer.on('audioSegmentTimingInfo', function (timingInfo) {\n // Note that all times for [audio/video]SegmentTimingInfo events are in video clock\n const audioSegmentTimingInfo = {\n start: {\n decode: clock$2.videoTsToSeconds(timingInfo.start.dts),\n presentation: clock$2.videoTsToSeconds(timingInfo.start.pts)\n },\n end: {\n decode: clock$2.videoTsToSeconds(timingInfo.end.dts),\n presentation: clock$2.videoTsToSeconds(timingInfo.end.pts)\n },\n baseMediaDecodeTime: clock$2.videoTsToSeconds(timingInfo.baseMediaDecodeTime)\n };\n if (timingInfo.prependedContentDuration) {\n audioSegmentTimingInfo.prependedContentDuration = clock$2.videoTsToSeconds(timingInfo.prependedContentDuration);\n }\n self.postMessage({\n action: 'audioSegmentTimingInfo',\n audioSegmentTimingInfo\n });\n });\n transmuxer.on('id3Frame', function (id3Frame) {\n self.postMessage({\n action: 'id3Frame',\n id3Frame\n });\n });\n transmuxer.on('caption', function (caption) {\n self.postMessage({\n action: 'caption',\n caption\n });\n });\n transmuxer.on('trackinfo', function (trackInfo) {\n self.postMessage({\n action: 'trackinfo',\n trackInfo\n });\n });\n transmuxer.on('audioTimingInfo', function (audioTimingInfo) {\n // convert to video TS since we prioritize video time over audio\n self.postMessage({\n action: 'audioTimingInfo',\n audioTimingInfo: {\n start: clock$2.videoTsToSeconds(audioTimingInfo.start),\n end: clock$2.videoTsToSeconds(audioTimingInfo.end)\n }\n });\n });\n transmuxer.on('videoTimingInfo', function (videoTimingInfo) {\n self.postMessage({\n action: 'videoTimingInfo',\n videoTimingInfo: {\n start: clock$2.videoTsToSeconds(videoTimingInfo.start),\n end: clock$2.videoTsToSeconds(videoTimingInfo.end)\n }\n });\n });\n transmuxer.on('log', function (log) {\n self.postMessage({\n action: 'log',\n log\n });\n });\n };\n /**\n * All incoming messages route through this hash. If no function exists\n * to handle an incoming message, then we ignore the message.\n *\n * @class MessageHandlers\n * @param {Object} options the options to initialize with\n */\n\n class MessageHandlers {\n constructor(self, options) {\n this.options = options || {};\n this.self = self;\n this.init();\n }\n /**\n * initialize our web worker and wire all the events.\n */\n\n init() {\n if (this.transmuxer) {\n this.transmuxer.dispose();\n }\n this.transmuxer = new transmuxer.Transmuxer(this.options);\n wireTransmuxerEvents(this.self, this.transmuxer);\n }\n pushMp4Captions(data) {\n if (!this.captionParser) {\n this.captionParser = new captionParser();\n this.captionParser.init();\n }\n const segment = new Uint8Array(data.data, data.byteOffset, data.byteLength);\n const parsed = this.captionParser.parse(segment, data.trackIds, data.timescales);\n this.self.postMessage({\n action: 'mp4Captions',\n captions: parsed && parsed.captions || [],\n logs: parsed && parsed.logs || [],\n data: segment.buffer\n }, [segment.buffer]);\n }\n probeMp4StartTime({\n timescales,\n data\n }) {\n const startTime = probe$2.startTime(timescales, data);\n this.self.postMessage({\n action: 'probeMp4StartTime',\n startTime,\n data\n }, [data.buffer]);\n }\n probeMp4Tracks({\n data\n }) {\n const tracks = probe$2.tracks(data);\n this.self.postMessage({\n action: 'probeMp4Tracks',\n tracks,\n data\n }, [data.buffer]);\n }\n /**\n * Probes an mp4 segment for EMSG boxes containing ID3 data.\n * https://aomediacodec.github.io/id3-emsg/\n *\n * @param {Uint8Array} data segment data\n * @param {number} offset segment start time\n * @return {Object[]} an array of ID3 frames\n */\n\n probeEmsgID3({\n data,\n offset\n }) {\n const id3Frames = probe$2.getEmsgID3(data, offset);\n this.self.postMessage({\n action: 'probeEmsgID3',\n id3Frames,\n emsgData: data\n }, [data.buffer]);\n }\n /**\n * Probe an mpeg2-ts segment to determine the start time of the segment in it's\n * internal \"media time,\" as well as whether it contains video and/or audio.\n *\n * @private\n * @param {Uint8Array} bytes - segment bytes\n * @param {number} baseStartTime\n * Relative reference timestamp used when adjusting frame timestamps for rollover.\n * This value should be in seconds, as it's converted to a 90khz clock within the\n * function body.\n * @return {Object} The start time of the current segment in \"media time\" as well as\n * whether it contains video and/or audio\n */\n\n probeTs({\n data,\n baseStartTime\n }) {\n const tsStartTime = typeof baseStartTime === 'number' && !isNaN(baseStartTime) ? baseStartTime * clock$2.ONE_SECOND_IN_TS : void 0;\n const timeInfo = tsInspector.inspect(data, tsStartTime);\n let result = null;\n if (timeInfo) {\n result = {\n // each type's time info comes back as an array of 2 times, start and end\n hasVideo: timeInfo.video && timeInfo.video.length === 2 || false,\n hasAudio: timeInfo.audio && timeInfo.audio.length === 2 || false\n };\n if (result.hasVideo) {\n result.videoStart = timeInfo.video[0].ptsTime;\n }\n if (result.hasAudio) {\n result.audioStart = timeInfo.audio[0].ptsTime;\n }\n }\n this.self.postMessage({\n action: 'probeTs',\n result,\n data\n }, [data.buffer]);\n }\n clearAllMp4Captions() {\n if (this.captionParser) {\n this.captionParser.clearAllCaptions();\n }\n }\n clearParsedMp4Captions() {\n if (this.captionParser) {\n this.captionParser.clearParsedCaptions();\n }\n }\n /**\n * Adds data (a ts segment) to the start of the transmuxer pipeline for\n * processing.\n *\n * @param {ArrayBuffer} data data to push into the muxer\n */\n\n push(data) {\n // Cast array buffer to correct type for transmuxer\n const segment = new Uint8Array(data.data, data.byteOffset, data.byteLength);\n this.transmuxer.push(segment);\n }\n /**\n * Recreate the transmuxer so that the next segment added via `push`\n * start with a fresh transmuxer.\n */\n\n reset() {\n this.transmuxer.reset();\n }\n /**\n * Set the value that will be used as the `baseMediaDecodeTime` time for the\n * next segment pushed in. Subsequent segments will have their `baseMediaDecodeTime`\n * set relative to the first based on the PTS values.\n *\n * @param {Object} data used to set the timestamp offset in the muxer\n */\n\n setTimestampOffset(data) {\n const timestampOffset = data.timestampOffset || 0;\n this.transmuxer.setBaseMediaDecodeTime(Math.round(clock$2.secondsToVideoTs(timestampOffset)));\n }\n setAudioAppendStart(data) {\n this.transmuxer.setAudioAppendStart(Math.ceil(clock$2.secondsToVideoTs(data.appendStart)));\n }\n setRemux(data) {\n this.transmuxer.setRemux(data.remux);\n }\n /**\n * Forces the pipeline to finish processing the last segment and emit it's\n * results.\n *\n * @param {Object} data event data, not really used\n */\n\n flush(data) {\n this.transmuxer.flush(); // transmuxed done action is fired after both audio/video pipelines are flushed\n\n self.postMessage({\n action: 'done',\n type: 'transmuxed'\n });\n }\n endTimeline() {\n this.transmuxer.endTimeline(); // transmuxed endedtimeline action is fired after both audio/video pipelines end their\n // timelines\n\n self.postMessage({\n action: 'endedtimeline',\n type: 'transmuxed'\n });\n }\n alignGopsWith(data) {\n this.transmuxer.alignGopsWith(data.gopsToAlignWith.slice());\n }\n }\n /**\n * Our web worker interface so that things can talk to mux.js\n * that will be running in a web worker. the scope is passed to this by\n * webworkify.\n *\n * @param {Object} self the scope for the web worker\n */\n\n self.onmessage = function (event) {\n if (event.data.action === 'init' && event.data.options) {\n this.messageHandlers = new MessageHandlers(self, event.data.options);\n return;\n }\n if (!this.messageHandlers) {\n this.messageHandlers = new MessageHandlers(self);\n }\n if (event.data && event.data.action && event.data.action !== 'init') {\n if (this.messageHandlers[event.data.action]) {\n this.messageHandlers[event.data.action](event.data);\n }\n }\n };\n}));\nvar TransmuxWorker = factory(workerCode$1);\n/* rollup-plugin-worker-factory end for worker!/home/runner/work/http-streaming/http-streaming/src/transmuxer-worker.js */\n\nconst handleData_ = (event, transmuxedData, callback) => {\n const {\n type,\n initSegment,\n captions,\n captionStreams,\n metadata,\n videoFrameDtsTime,\n videoFramePtsTime\n } = event.data.segment;\n transmuxedData.buffer.push({\n captions,\n captionStreams,\n metadata\n });\n const boxes = event.data.segment.boxes || {\n data: event.data.segment.data\n };\n const result = {\n type,\n // cast ArrayBuffer to TypedArray\n data: new Uint8Array(boxes.data, boxes.data.byteOffset, boxes.data.byteLength),\n initSegment: new Uint8Array(initSegment.data, initSegment.byteOffset, initSegment.byteLength)\n };\n if (typeof videoFrameDtsTime !== 'undefined') {\n result.videoFrameDtsTime = videoFrameDtsTime;\n }\n if (typeof videoFramePtsTime !== 'undefined') {\n result.videoFramePtsTime = videoFramePtsTime;\n }\n callback(result);\n};\nconst handleDone_ = ({\n transmuxedData,\n callback\n}) => {\n // Previously we only returned data on data events,\n // not on done events. Clear out the buffer to keep that consistent.\n transmuxedData.buffer = []; // all buffers should have been flushed from the muxer, so start processing anything we\n // have received\n\n callback(transmuxedData);\n};\nconst handleGopInfo_ = (event, transmuxedData) => {\n transmuxedData.gopInfo = event.data.gopInfo;\n};\nconst processTransmux = options => {\n const {\n transmuxer,\n bytes,\n audioAppendStart,\n gopsToAlignWith,\n remux,\n onData,\n onTrackInfo,\n onAudioTimingInfo,\n onVideoTimingInfo,\n onVideoSegmentTimingInfo,\n onAudioSegmentTimingInfo,\n onId3,\n onCaptions,\n onDone,\n onEndedTimeline,\n onTransmuxerLog,\n isEndOfTimeline\n } = options;\n const transmuxedData = {\n buffer: []\n };\n let waitForEndedTimelineEvent = isEndOfTimeline;\n const handleMessage = event => {\n if (transmuxer.currentTransmux !== options) {\n // disposed\n return;\n }\n if (event.data.action === 'data') {\n handleData_(event, transmuxedData, onData);\n }\n if (event.data.action === 'trackinfo') {\n onTrackInfo(event.data.trackInfo);\n }\n if (event.data.action === 'gopInfo') {\n handleGopInfo_(event, transmuxedData);\n }\n if (event.data.action === 'audioTimingInfo') {\n onAudioTimingInfo(event.data.audioTimingInfo);\n }\n if (event.data.action === 'videoTimingInfo') {\n onVideoTimingInfo(event.data.videoTimingInfo);\n }\n if (event.data.action === 'videoSegmentTimingInfo') {\n onVideoSegmentTimingInfo(event.data.videoSegmentTimingInfo);\n }\n if (event.data.action === 'audioSegmentTimingInfo') {\n onAudioSegmentTimingInfo(event.data.audioSegmentTimingInfo);\n }\n if (event.data.action === 'id3Frame') {\n onId3([event.data.id3Frame], event.data.id3Frame.dispatchType);\n }\n if (event.data.action === 'caption') {\n onCaptions(event.data.caption);\n }\n if (event.data.action === 'endedtimeline') {\n waitForEndedTimelineEvent = false;\n onEndedTimeline();\n }\n if (event.data.action === 'log') {\n onTransmuxerLog(event.data.log);\n } // wait for the transmuxed event since we may have audio and video\n\n if (event.data.type !== 'transmuxed') {\n return;\n } // If the \"endedtimeline\" event has not yet fired, and this segment represents the end\n // of a timeline, that means there may still be data events before the segment\n // processing can be considerred complete. In that case, the final event should be\n // an \"endedtimeline\" event with the type \"transmuxed.\"\n\n if (waitForEndedTimelineEvent) {\n return;\n }\n transmuxer.onmessage = null;\n handleDone_({\n transmuxedData,\n callback: onDone\n });\n /* eslint-disable no-use-before-define */\n\n dequeue(transmuxer);\n /* eslint-enable */\n };\n\n transmuxer.onmessage = handleMessage;\n if (audioAppendStart) {\n transmuxer.postMessage({\n action: 'setAudioAppendStart',\n appendStart: audioAppendStart\n });\n } // allow empty arrays to be passed to clear out GOPs\n\n if (Array.isArray(gopsToAlignWith)) {\n transmuxer.postMessage({\n action: 'alignGopsWith',\n gopsToAlignWith\n });\n }\n if (typeof remux !== 'undefined') {\n transmuxer.postMessage({\n action: 'setRemux',\n remux\n });\n }\n if (bytes.byteLength) {\n const buffer = bytes instanceof ArrayBuffer ? bytes : bytes.buffer;\n const byteOffset = bytes instanceof ArrayBuffer ? 0 : bytes.byteOffset;\n transmuxer.postMessage({\n action: 'push',\n // Send the typed-array of data as an ArrayBuffer so that\n // it can be sent as a \"Transferable\" and avoid the costly\n // memory copy\n data: buffer,\n // To recreate the original typed-array, we need information\n // about what portion of the ArrayBuffer it was a view into\n byteOffset,\n byteLength: bytes.byteLength\n }, [buffer]);\n }\n if (isEndOfTimeline) {\n transmuxer.postMessage({\n action: 'endTimeline'\n });\n } // even if we didn't push any bytes, we have to make sure we flush in case we reached\n // the end of the segment\n\n transmuxer.postMessage({\n action: 'flush'\n });\n};\nconst dequeue = transmuxer => {\n transmuxer.currentTransmux = null;\n if (transmuxer.transmuxQueue.length) {\n transmuxer.currentTransmux = transmuxer.transmuxQueue.shift();\n if (typeof transmuxer.currentTransmux === 'function') {\n transmuxer.currentTransmux();\n } else {\n processTransmux(transmuxer.currentTransmux);\n }\n }\n};\nconst processAction = (transmuxer, action) => {\n transmuxer.postMessage({\n action\n });\n dequeue(transmuxer);\n};\nconst enqueueAction = (action, transmuxer) => {\n if (!transmuxer.currentTransmux) {\n transmuxer.currentTransmux = action;\n processAction(transmuxer, action);\n return;\n }\n transmuxer.transmuxQueue.push(processAction.bind(null, transmuxer, action));\n};\nconst reset = transmuxer => {\n enqueueAction('reset', transmuxer);\n};\nconst endTimeline = transmuxer => {\n enqueueAction('endTimeline', transmuxer);\n};\nconst transmux = options => {\n if (!options.transmuxer.currentTransmux) {\n options.transmuxer.currentTransmux = options;\n processTransmux(options);\n return;\n }\n options.transmuxer.transmuxQueue.push(options);\n};\nconst createTransmuxer = options => {\n const transmuxer = new TransmuxWorker();\n transmuxer.currentTransmux = null;\n transmuxer.transmuxQueue = [];\n const term = transmuxer.terminate;\n transmuxer.terminate = () => {\n transmuxer.currentTransmux = null;\n transmuxer.transmuxQueue.length = 0;\n return term.call(transmuxer);\n };\n transmuxer.postMessage({\n action: 'init',\n options\n });\n return transmuxer;\n};\nvar segmentTransmuxer = {\n reset,\n endTimeline,\n transmux,\n createTransmuxer\n};\nconst workerCallback = function (options) {\n const transmuxer = options.transmuxer;\n const endAction = options.endAction || options.action;\n const callback = options.callback;\n const message = _extends({}, options, {\n endAction: null,\n transmuxer: null,\n callback: null\n });\n const listenForEndEvent = event => {\n if (event.data.action !== endAction) {\n return;\n }\n transmuxer.removeEventListener('message', listenForEndEvent); // transfer ownership of bytes back to us.\n\n if (event.data.data) {\n event.data.data = new Uint8Array(event.data.data, options.byteOffset || 0, options.byteLength || event.data.data.byteLength);\n if (options.data) {\n options.data = event.data.data;\n }\n }\n callback(event.data);\n };\n transmuxer.addEventListener('message', listenForEndEvent);\n if (options.data) {\n const isArrayBuffer = options.data instanceof ArrayBuffer;\n message.byteOffset = isArrayBuffer ? 0 : options.data.byteOffset;\n message.byteLength = options.data.byteLength;\n const transfers = [isArrayBuffer ? options.data : options.data.buffer];\n transmuxer.postMessage(message, transfers);\n } else {\n transmuxer.postMessage(message);\n }\n};\nconst REQUEST_ERRORS = {\n FAILURE: 2,\n TIMEOUT: -101,\n ABORTED: -102\n};\n/**\n * Abort all requests\n *\n * @param {Object} activeXhrs - an object that tracks all XHR requests\n */\n\nconst abortAll = activeXhrs => {\n activeXhrs.forEach(xhr => {\n xhr.abort();\n });\n};\n/**\n * Gather important bandwidth stats once a request has completed\n *\n * @param {Object} request - the XHR request from which to gather stats\n */\n\nconst getRequestStats = request => {\n return {\n bandwidth: request.bandwidth,\n bytesReceived: request.bytesReceived || 0,\n roundTripTime: request.roundTripTime || 0\n };\n};\n/**\n * If possible gather bandwidth stats as a request is in\n * progress\n *\n * @param {Event} progressEvent - an event object from an XHR's progress event\n */\n\nconst getProgressStats = progressEvent => {\n const request = progressEvent.target;\n const roundTripTime = Date.now() - request.requestTime;\n const stats = {\n bandwidth: Infinity,\n bytesReceived: 0,\n roundTripTime: roundTripTime || 0\n };\n stats.bytesReceived = progressEvent.loaded; // This can result in Infinity if stats.roundTripTime is 0 but that is ok\n // because we should only use bandwidth stats on progress to determine when\n // abort a request early due to insufficient bandwidth\n\n stats.bandwidth = Math.floor(stats.bytesReceived / stats.roundTripTime * 8 * 1000);\n return stats;\n};\n/**\n * Handle all error conditions in one place and return an object\n * with all the information\n *\n * @param {Error|null} error - if non-null signals an error occured with the XHR\n * @param {Object} request - the XHR request that possibly generated the error\n */\n\nconst handleErrors = (error, request) => {\n if (request.timedout) {\n return {\n status: request.status,\n message: 'HLS request timed-out at URL: ' + request.uri,\n code: REQUEST_ERRORS.TIMEOUT,\n xhr: request\n };\n }\n if (request.aborted) {\n return {\n status: request.status,\n message: 'HLS request aborted at URL: ' + request.uri,\n code: REQUEST_ERRORS.ABORTED,\n xhr: request\n };\n }\n if (error) {\n return {\n status: request.status,\n message: 'HLS request errored at URL: ' + request.uri,\n code: REQUEST_ERRORS.FAILURE,\n xhr: request\n };\n }\n if (request.responseType === 'arraybuffer' && request.response.byteLength === 0) {\n return {\n status: request.status,\n message: 'Empty HLS response at URL: ' + request.uri,\n code: REQUEST_ERRORS.FAILURE,\n xhr: request\n };\n }\n return null;\n};\n/**\n * Handle responses for key data and convert the key data to the correct format\n * for the decryption step later\n *\n * @param {Object} segment - a simplified copy of the segmentInfo object\n * from SegmentLoader\n * @param {Array} objects - objects to add the key bytes to.\n * @param {Function} finishProcessingFn - a callback to execute to continue processing\n * this request\n */\n\nconst handleKeyResponse = (segment, objects, finishProcessingFn) => (error, request) => {\n const response = request.response;\n const errorObj = handleErrors(error, request);\n if (errorObj) {\n return finishProcessingFn(errorObj, segment);\n }\n if (response.byteLength !== 16) {\n return finishProcessingFn({\n status: request.status,\n message: 'Invalid HLS key at URL: ' + request.uri,\n code: REQUEST_ERRORS.FAILURE,\n xhr: request\n }, segment);\n }\n const view = new DataView(response);\n const bytes = new Uint32Array([view.getUint32(0), view.getUint32(4), view.getUint32(8), view.getUint32(12)]);\n for (let i = 0; i < objects.length; i++) {\n objects[i].bytes = bytes;\n }\n return finishProcessingFn(null, segment);\n};\nconst parseInitSegment = (segment, callback) => {\n const type = detectContainerForBytes(segment.map.bytes); // TODO: We should also handle ts init segments here, but we\n // only know how to parse mp4 init segments at the moment\n\n if (type !== 'mp4') {\n const uri = segment.map.resolvedUri || segment.map.uri;\n return callback({\n internal: true,\n message: `Found unsupported ${type || 'unknown'} container for initialization segment at URL: ${uri}`,\n code: REQUEST_ERRORS.FAILURE\n });\n }\n workerCallback({\n action: 'probeMp4Tracks',\n data: segment.map.bytes,\n transmuxer: segment.transmuxer,\n callback: ({\n tracks,\n data\n }) => {\n // transfer bytes back to us\n segment.map.bytes = data;\n tracks.forEach(function (track) {\n segment.map.tracks = segment.map.tracks || {}; // only support one track of each type for now\n\n if (segment.map.tracks[track.type]) {\n return;\n }\n segment.map.tracks[track.type] = track;\n if (typeof track.id === 'number' && track.timescale) {\n segment.map.timescales = segment.map.timescales || {};\n segment.map.timescales[track.id] = track.timescale;\n }\n });\n return callback(null);\n }\n });\n};\n/**\n * Handle init-segment responses\n *\n * @param {Object} segment - a simplified copy of the segmentInfo object\n * from SegmentLoader\n * @param {Function} finishProcessingFn - a callback to execute to continue processing\n * this request\n */\n\nconst handleInitSegmentResponse = ({\n segment,\n finishProcessingFn\n}) => (error, request) => {\n const errorObj = handleErrors(error, request);\n if (errorObj) {\n return finishProcessingFn(errorObj, segment);\n }\n const bytes = new Uint8Array(request.response); // init segment is encypted, we will have to wait\n // until the key request is done to decrypt.\n\n if (segment.map.key) {\n segment.map.encryptedBytes = bytes;\n return finishProcessingFn(null, segment);\n }\n segment.map.bytes = bytes;\n parseInitSegment(segment, function (parseError) {\n if (parseError) {\n parseError.xhr = request;\n parseError.status = request.status;\n return finishProcessingFn(parseError, segment);\n }\n finishProcessingFn(null, segment);\n });\n};\n/**\n * Response handler for segment-requests being sure to set the correct\n * property depending on whether the segment is encryped or not\n * Also records and keeps track of stats that are used for ABR purposes\n *\n * @param {Object} segment - a simplified copy of the segmentInfo object\n * from SegmentLoader\n * @param {Function} finishProcessingFn - a callback to execute to continue processing\n * this request\n */\n\nconst handleSegmentResponse = ({\n segment,\n finishProcessingFn,\n responseType\n}) => (error, request) => {\n const errorObj = handleErrors(error, request);\n if (errorObj) {\n return finishProcessingFn(errorObj, segment);\n }\n const newBytes =\n // although responseText \"should\" exist, this guard serves to prevent an error being\n // thrown for two primary cases:\n // 1. the mime type override stops working, or is not implemented for a specific\n // browser\n // 2. when using mock XHR libraries like sinon that do not allow the override behavior\n responseType === 'arraybuffer' || !request.responseText ? request.response : stringToArrayBuffer(request.responseText.substring(segment.lastReachedChar || 0));\n segment.stats = getRequestStats(request);\n if (segment.key) {\n segment.encryptedBytes = new Uint8Array(newBytes);\n } else {\n segment.bytes = new Uint8Array(newBytes);\n }\n return finishProcessingFn(null, segment);\n};\nconst transmuxAndNotify = ({\n segment,\n bytes,\n trackInfoFn,\n timingInfoFn,\n videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn,\n id3Fn,\n captionsFn,\n isEndOfTimeline,\n endedTimelineFn,\n dataFn,\n doneFn,\n onTransmuxerLog\n}) => {\n const fmp4Tracks = segment.map && segment.map.tracks || {};\n const isMuxed = Boolean(fmp4Tracks.audio && fmp4Tracks.video); // Keep references to each function so we can null them out after we're done with them.\n // One reason for this is that in the case of full segments, we want to trust start\n // times from the probe, rather than the transmuxer.\n\n let audioStartFn = timingInfoFn.bind(null, segment, 'audio', 'start');\n const audioEndFn = timingInfoFn.bind(null, segment, 'audio', 'end');\n let videoStartFn = timingInfoFn.bind(null, segment, 'video', 'start');\n const videoEndFn = timingInfoFn.bind(null, segment, 'video', 'end');\n const finish = () => transmux({\n bytes,\n transmuxer: segment.transmuxer,\n audioAppendStart: segment.audioAppendStart,\n gopsToAlignWith: segment.gopsToAlignWith,\n remux: isMuxed,\n onData: result => {\n result.type = result.type === 'combined' ? 'video' : result.type;\n dataFn(segment, result);\n },\n onTrackInfo: trackInfo => {\n if (trackInfoFn) {\n if (isMuxed) {\n trackInfo.isMuxed = true;\n }\n trackInfoFn(segment, trackInfo);\n }\n },\n onAudioTimingInfo: audioTimingInfo => {\n // we only want the first start value we encounter\n if (audioStartFn && typeof audioTimingInfo.start !== 'undefined') {\n audioStartFn(audioTimingInfo.start);\n audioStartFn = null;\n } // we want to continually update the end time\n\n if (audioEndFn && typeof audioTimingInfo.end !== 'undefined') {\n audioEndFn(audioTimingInfo.end);\n }\n },\n onVideoTimingInfo: videoTimingInfo => {\n // we only want the first start value we encounter\n if (videoStartFn && typeof videoTimingInfo.start !== 'undefined') {\n videoStartFn(videoTimingInfo.start);\n videoStartFn = null;\n } // we want to continually update the end time\n\n if (videoEndFn && typeof videoTimingInfo.end !== 'undefined') {\n videoEndFn(videoTimingInfo.end);\n }\n },\n onVideoSegmentTimingInfo: videoSegmentTimingInfo => {\n videoSegmentTimingInfoFn(videoSegmentTimingInfo);\n },\n onAudioSegmentTimingInfo: audioSegmentTimingInfo => {\n audioSegmentTimingInfoFn(audioSegmentTimingInfo);\n },\n onId3: (id3Frames, dispatchType) => {\n id3Fn(segment, id3Frames, dispatchType);\n },\n onCaptions: captions => {\n captionsFn(segment, [captions]);\n },\n isEndOfTimeline,\n onEndedTimeline: () => {\n endedTimelineFn();\n },\n onTransmuxerLog,\n onDone: result => {\n if (!doneFn) {\n return;\n }\n result.type = result.type === 'combined' ? 'video' : result.type;\n doneFn(null, segment, result);\n }\n }); // In the transmuxer, we don't yet have the ability to extract a \"proper\" start time.\n // Meaning cached frame data may corrupt our notion of where this segment\n // really starts. To get around this, probe for the info needed.\n\n workerCallback({\n action: 'probeTs',\n transmuxer: segment.transmuxer,\n data: bytes,\n baseStartTime: segment.baseStartTime,\n callback: data => {\n segment.bytes = bytes = data.data;\n const probeResult = data.result;\n if (probeResult) {\n trackInfoFn(segment, {\n hasAudio: probeResult.hasAudio,\n hasVideo: probeResult.hasVideo,\n isMuxed\n });\n trackInfoFn = null;\n }\n finish();\n }\n });\n};\nconst handleSegmentBytes = ({\n segment,\n bytes,\n trackInfoFn,\n timingInfoFn,\n videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn,\n id3Fn,\n captionsFn,\n isEndOfTimeline,\n endedTimelineFn,\n dataFn,\n doneFn,\n onTransmuxerLog\n}) => {\n let bytesAsUint8Array = new Uint8Array(bytes); // TODO:\n // We should have a handler that fetches the number of bytes required\n // to check if something is fmp4. This will allow us to save bandwidth\n // because we can only exclude a playlist and abort requests\n // by codec after trackinfo triggers.\n\n if (isLikelyFmp4MediaSegment(bytesAsUint8Array)) {\n segment.isFmp4 = true;\n const {\n tracks\n } = segment.map;\n const trackInfo = {\n isFmp4: true,\n hasVideo: !!tracks.video,\n hasAudio: !!tracks.audio\n }; // if we have a audio track, with a codec that is not set to\n // encrypted audio\n\n if (tracks.audio && tracks.audio.codec && tracks.audio.codec !== 'enca') {\n trackInfo.audioCodec = tracks.audio.codec;\n } // if we have a video track, with a codec that is not set to\n // encrypted video\n\n if (tracks.video && tracks.video.codec && tracks.video.codec !== 'encv') {\n trackInfo.videoCodec = tracks.video.codec;\n }\n if (tracks.video && tracks.audio) {\n trackInfo.isMuxed = true;\n } // since we don't support appending fmp4 data on progress, we know we have the full\n // segment here\n\n trackInfoFn(segment, trackInfo); // The probe doesn't provide the segment end time, so only callback with the start\n // time. The end time can be roughly calculated by the receiver using the duration.\n //\n // Note that the start time returned by the probe reflects the baseMediaDecodeTime, as\n // that is the true start of the segment (where the playback engine should begin\n // decoding).\n\n const finishLoading = (captions, id3Frames) => {\n // if the track still has audio at this point it is only possible\n // for it to be audio only. See `tracks.video && tracks.audio` if statement\n // above.\n // we make sure to use segment.bytes here as that\n dataFn(segment, {\n data: bytesAsUint8Array,\n type: trackInfo.hasAudio && !trackInfo.isMuxed ? 'audio' : 'video'\n });\n if (id3Frames && id3Frames.length) {\n id3Fn(segment, id3Frames);\n }\n if (captions && captions.length) {\n captionsFn(segment, captions);\n }\n doneFn(null, segment, {});\n };\n workerCallback({\n action: 'probeMp4StartTime',\n timescales: segment.map.timescales,\n data: bytesAsUint8Array,\n transmuxer: segment.transmuxer,\n callback: ({\n data,\n startTime\n }) => {\n // transfer bytes back to us\n bytes = data.buffer;\n segment.bytes = bytesAsUint8Array = data;\n if (trackInfo.hasAudio && !trackInfo.isMuxed) {\n timingInfoFn(segment, 'audio', 'start', startTime);\n }\n if (trackInfo.hasVideo) {\n timingInfoFn(segment, 'video', 'start', startTime);\n }\n workerCallback({\n action: 'probeEmsgID3',\n data: bytesAsUint8Array,\n transmuxer: segment.transmuxer,\n offset: startTime,\n callback: ({\n emsgData,\n id3Frames\n }) => {\n // transfer bytes back to us\n bytes = emsgData.buffer;\n segment.bytes = bytesAsUint8Array = emsgData; // Run through the CaptionParser in case there are captions.\n // Initialize CaptionParser if it hasn't been yet\n\n if (!tracks.video || !emsgData.byteLength || !segment.transmuxer) {\n finishLoading(undefined, id3Frames);\n return;\n }\n workerCallback({\n action: 'pushMp4Captions',\n endAction: 'mp4Captions',\n transmuxer: segment.transmuxer,\n data: bytesAsUint8Array,\n timescales: segment.map.timescales,\n trackIds: [tracks.video.id],\n callback: message => {\n // transfer bytes back to us\n bytes = message.data.buffer;\n segment.bytes = bytesAsUint8Array = message.data;\n message.logs.forEach(function (log) {\n onTransmuxerLog(merge(log, {\n stream: 'mp4CaptionParser'\n }));\n });\n finishLoading(message.captions, id3Frames);\n }\n });\n }\n });\n }\n });\n return;\n } // VTT or other segments that don't need processing\n\n if (!segment.transmuxer) {\n doneFn(null, segment, {});\n return;\n }\n if (typeof segment.container === 'undefined') {\n segment.container = detectContainerForBytes(bytesAsUint8Array);\n }\n if (segment.container !== 'ts' && segment.container !== 'aac') {\n trackInfoFn(segment, {\n hasAudio: false,\n hasVideo: false\n });\n doneFn(null, segment, {});\n return;\n } // ts or aac\n\n transmuxAndNotify({\n segment,\n bytes,\n trackInfoFn,\n timingInfoFn,\n videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn,\n id3Fn,\n captionsFn,\n isEndOfTimeline,\n endedTimelineFn,\n dataFn,\n doneFn,\n onTransmuxerLog\n });\n};\nconst decrypt = function ({\n id,\n key,\n encryptedBytes,\n decryptionWorker\n}, callback) {\n const decryptionHandler = event => {\n if (event.data.source === id) {\n decryptionWorker.removeEventListener('message', decryptionHandler);\n const decrypted = event.data.decrypted;\n callback(new Uint8Array(decrypted.bytes, decrypted.byteOffset, decrypted.byteLength));\n }\n };\n decryptionWorker.addEventListener('message', decryptionHandler);\n let keyBytes;\n if (key.bytes.slice) {\n keyBytes = key.bytes.slice();\n } else {\n keyBytes = new Uint32Array(Array.prototype.slice.call(key.bytes));\n } // incrementally decrypt the bytes\n\n decryptionWorker.postMessage(createTransferableMessage({\n source: id,\n encrypted: encryptedBytes,\n key: keyBytes,\n iv: key.iv\n }), [encryptedBytes.buffer, keyBytes.buffer]);\n};\n/**\n * Decrypt the segment via the decryption web worker\n *\n * @param {WebWorker} decryptionWorker - a WebWorker interface to AES-128 decryption\n * routines\n * @param {Object} segment - a simplified copy of the segmentInfo object\n * from SegmentLoader\n * @param {Function} trackInfoFn - a callback that receives track info\n * @param {Function} timingInfoFn - a callback that receives timing info\n * @param {Function} videoSegmentTimingInfoFn\n * a callback that receives video timing info based on media times and\n * any adjustments made by the transmuxer\n * @param {Function} audioSegmentTimingInfoFn\n * a callback that receives audio timing info based on media times and\n * any adjustments made by the transmuxer\n * @param {boolean} isEndOfTimeline\n * true if this segment represents the last segment in a timeline\n * @param {Function} endedTimelineFn\n * a callback made when a timeline is ended, will only be called if\n * isEndOfTimeline is true\n * @param {Function} dataFn - a callback that is executed when segment bytes are available\n * and ready to use\n * @param {Function} doneFn - a callback that is executed after decryption has completed\n */\n\nconst decryptSegment = ({\n decryptionWorker,\n segment,\n trackInfoFn,\n timingInfoFn,\n videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn,\n id3Fn,\n captionsFn,\n isEndOfTimeline,\n endedTimelineFn,\n dataFn,\n doneFn,\n onTransmuxerLog\n}) => {\n decrypt({\n id: segment.requestId,\n key: segment.key,\n encryptedBytes: segment.encryptedBytes,\n decryptionWorker\n }, decryptedBytes => {\n segment.bytes = decryptedBytes;\n handleSegmentBytes({\n segment,\n bytes: segment.bytes,\n trackInfoFn,\n timingInfoFn,\n videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn,\n id3Fn,\n captionsFn,\n isEndOfTimeline,\n endedTimelineFn,\n dataFn,\n doneFn,\n onTransmuxerLog\n });\n });\n};\n/**\n * This function waits for all XHRs to finish (with either success or failure)\n * before continueing processing via it's callback. The function gathers errors\n * from each request into a single errors array so that the error status for\n * each request can be examined later.\n *\n * @param {Object} activeXhrs - an object that tracks all XHR requests\n * @param {WebWorker} decryptionWorker - a WebWorker interface to AES-128 decryption\n * routines\n * @param {Function} trackInfoFn - a callback that receives track info\n * @param {Function} timingInfoFn - a callback that receives timing info\n * @param {Function} videoSegmentTimingInfoFn\n * a callback that receives video timing info based on media times and\n * any adjustments made by the transmuxer\n * @param {Function} audioSegmentTimingInfoFn\n * a callback that receives audio timing info based on media times and\n * any adjustments made by the transmuxer\n * @param {Function} id3Fn - a callback that receives ID3 metadata\n * @param {Function} captionsFn - a callback that receives captions\n * @param {boolean} isEndOfTimeline\n * true if this segment represents the last segment in a timeline\n * @param {Function} endedTimelineFn\n * a callback made when a timeline is ended, will only be called if\n * isEndOfTimeline is true\n * @param {Function} dataFn - a callback that is executed when segment bytes are available\n * and ready to use\n * @param {Function} doneFn - a callback that is executed after all resources have been\n * downloaded and any decryption completed\n */\n\nconst waitForCompletion = ({\n activeXhrs,\n decryptionWorker,\n trackInfoFn,\n timingInfoFn,\n videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn,\n id3Fn,\n captionsFn,\n isEndOfTimeline,\n endedTimelineFn,\n dataFn,\n doneFn,\n onTransmuxerLog\n}) => {\n let count = 0;\n let didError = false;\n return (error, segment) => {\n if (didError) {\n return;\n }\n if (error) {\n didError = true; // If there are errors, we have to abort any outstanding requests\n\n abortAll(activeXhrs); // Even though the requests above are aborted, and in theory we could wait until we\n // handle the aborted events from those requests, there are some cases where we may\n // never get an aborted event. For instance, if the network connection is lost and\n // there were two requests, the first may have triggered an error immediately, while\n // the second request remains unsent. In that case, the aborted algorithm will not\n // trigger an abort: see https://xhr.spec.whatwg.org/#the-abort()-method\n //\n // We also can't rely on the ready state of the XHR, since the request that\n // triggered the connection error may also show as a ready state of 0 (unsent).\n // Therefore, we have to finish this group of requests immediately after the first\n // seen error.\n\n return doneFn(error, segment);\n }\n count += 1;\n if (count === activeXhrs.length) {\n const segmentFinish = function () {\n if (segment.encryptedBytes) {\n return decryptSegment({\n decryptionWorker,\n segment,\n trackInfoFn,\n timingInfoFn,\n videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn,\n id3Fn,\n captionsFn,\n isEndOfTimeline,\n endedTimelineFn,\n dataFn,\n doneFn,\n onTransmuxerLog\n });\n } // Otherwise, everything is ready just continue\n\n handleSegmentBytes({\n segment,\n bytes: segment.bytes,\n trackInfoFn,\n timingInfoFn,\n videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn,\n id3Fn,\n captionsFn,\n isEndOfTimeline,\n endedTimelineFn,\n dataFn,\n doneFn,\n onTransmuxerLog\n });\n }; // Keep track of when *all* of the requests have completed\n\n segment.endOfAllRequests = Date.now();\n if (segment.map && segment.map.encryptedBytes && !segment.map.bytes) {\n return decrypt({\n decryptionWorker,\n // add -init to the \"id\" to differentiate between segment\n // and init segment decryption, just in case they happen\n // at the same time at some point in the future.\n id: segment.requestId + '-init',\n encryptedBytes: segment.map.encryptedBytes,\n key: segment.map.key\n }, decryptedBytes => {\n segment.map.bytes = decryptedBytes;\n parseInitSegment(segment, parseError => {\n if (parseError) {\n abortAll(activeXhrs);\n return doneFn(parseError, segment);\n }\n segmentFinish();\n });\n });\n }\n segmentFinish();\n }\n };\n};\n/**\n * Calls the abort callback if any request within the batch was aborted. Will only call\n * the callback once per batch of requests, even if multiple were aborted.\n *\n * @param {Object} loadendState - state to check to see if the abort function was called\n * @param {Function} abortFn - callback to call for abort\n */\n\nconst handleLoadEnd = ({\n loadendState,\n abortFn\n}) => event => {\n const request = event.target;\n if (request.aborted && abortFn && !loadendState.calledAbortFn) {\n abortFn();\n loadendState.calledAbortFn = true;\n }\n};\n/**\n * Simple progress event callback handler that gathers some stats before\n * executing a provided callback with the `segment` object\n *\n * @param {Object} segment - a simplified copy of the segmentInfo object\n * from SegmentLoader\n * @param {Function} progressFn - a callback that is executed each time a progress event\n * is received\n * @param {Function} trackInfoFn - a callback that receives track info\n * @param {Function} timingInfoFn - a callback that receives timing info\n * @param {Function} videoSegmentTimingInfoFn\n * a callback that receives video timing info based on media times and\n * any adjustments made by the transmuxer\n * @param {Function} audioSegmentTimingInfoFn\n * a callback that receives audio timing info based on media times and\n * any adjustments made by the transmuxer\n * @param {boolean} isEndOfTimeline\n * true if this segment represents the last segment in a timeline\n * @param {Function} endedTimelineFn\n * a callback made when a timeline is ended, will only be called if\n * isEndOfTimeline is true\n * @param {Function} dataFn - a callback that is executed when segment bytes are available\n * and ready to use\n * @param {Event} event - the progress event object from XMLHttpRequest\n */\n\nconst handleProgress = ({\n segment,\n progressFn,\n trackInfoFn,\n timingInfoFn,\n videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn,\n id3Fn,\n captionsFn,\n isEndOfTimeline,\n endedTimelineFn,\n dataFn\n}) => event => {\n const request = event.target;\n if (request.aborted) {\n return;\n }\n segment.stats = merge(segment.stats, getProgressStats(event)); // record the time that we receive the first byte of data\n\n if (!segment.stats.firstBytesReceivedAt && segment.stats.bytesReceived) {\n segment.stats.firstBytesReceivedAt = Date.now();\n }\n return progressFn(event, segment);\n};\n/**\n * Load all resources and does any processing necessary for a media-segment\n *\n * Features:\n * decrypts the media-segment if it has a key uri and an iv\n * aborts *all* requests if *any* one request fails\n *\n * The segment object, at minimum, has the following format:\n * {\n * resolvedUri: String,\n * [transmuxer]: Object,\n * [byterange]: {\n * offset: Number,\n * length: Number\n * },\n * [key]: {\n * resolvedUri: String\n * [byterange]: {\n * offset: Number,\n * length: Number\n * },\n * iv: {\n * bytes: Uint32Array\n * }\n * },\n * [map]: {\n * resolvedUri: String,\n * [byterange]: {\n * offset: Number,\n * length: Number\n * },\n * [bytes]: Uint8Array\n * }\n * }\n * ...where [name] denotes optional properties\n *\n * @param {Function} xhr - an instance of the xhr wrapper in xhr.js\n * @param {Object} xhrOptions - the base options to provide to all xhr requests\n * @param {WebWorker} decryptionWorker - a WebWorker interface to AES-128\n * decryption routines\n * @param {Object} segment - a simplified copy of the segmentInfo object\n * from SegmentLoader\n * @param {Function} abortFn - a callback called (only once) if any piece of a request was\n * aborted\n * @param {Function} progressFn - a callback that receives progress events from the main\n * segment's xhr request\n * @param {Function} trackInfoFn - a callback that receives track info\n * @param {Function} timingInfoFn - a callback that receives timing info\n * @param {Function} videoSegmentTimingInfoFn\n * a callback that receives video timing info based on media times and\n * any adjustments made by the transmuxer\n * @param {Function} audioSegmentTimingInfoFn\n * a callback that receives audio timing info based on media times and\n * any adjustments made by the transmuxer\n * @param {Function} id3Fn - a callback that receives ID3 metadata\n * @param {Function} captionsFn - a callback that receives captions\n * @param {boolean} isEndOfTimeline\n * true if this segment represents the last segment in a timeline\n * @param {Function} endedTimelineFn\n * a callback made when a timeline is ended, will only be called if\n * isEndOfTimeline is true\n * @param {Function} dataFn - a callback that receives data from the main segment's xhr\n * request, transmuxed if needed\n * @param {Function} doneFn - a callback that is executed only once all requests have\n * succeeded or failed\n * @return {Function} a function that, when invoked, immediately aborts all\n * outstanding requests\n */\n\nconst mediaSegmentRequest = ({\n xhr,\n xhrOptions,\n decryptionWorker,\n segment,\n abortFn,\n progressFn,\n trackInfoFn,\n timingInfoFn,\n videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn,\n id3Fn,\n captionsFn,\n isEndOfTimeline,\n endedTimelineFn,\n dataFn,\n doneFn,\n onTransmuxerLog\n}) => {\n const activeXhrs = [];\n const finishProcessingFn = waitForCompletion({\n activeXhrs,\n decryptionWorker,\n trackInfoFn,\n timingInfoFn,\n videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn,\n id3Fn,\n captionsFn,\n isEndOfTimeline,\n endedTimelineFn,\n dataFn,\n doneFn,\n onTransmuxerLog\n }); // optionally, request the decryption key\n\n if (segment.key && !segment.key.bytes) {\n const objects = [segment.key];\n if (segment.map && !segment.map.bytes && segment.map.key && segment.map.key.resolvedUri === segment.key.resolvedUri) {\n objects.push(segment.map.key);\n }\n const keyRequestOptions = merge(xhrOptions, {\n uri: segment.key.resolvedUri,\n responseType: 'arraybuffer'\n });\n const keyRequestCallback = handleKeyResponse(segment, objects, finishProcessingFn);\n const keyXhr = xhr(keyRequestOptions, keyRequestCallback);\n activeXhrs.push(keyXhr);\n } // optionally, request the associated media init segment\n\n if (segment.map && !segment.map.bytes) {\n const differentMapKey = segment.map.key && (!segment.key || segment.key.resolvedUri !== segment.map.key.resolvedUri);\n if (differentMapKey) {\n const mapKeyRequestOptions = merge(xhrOptions, {\n uri: segment.map.key.resolvedUri,\n responseType: 'arraybuffer'\n });\n const mapKeyRequestCallback = handleKeyResponse(segment, [segment.map.key], finishProcessingFn);\n const mapKeyXhr = xhr(mapKeyRequestOptions, mapKeyRequestCallback);\n activeXhrs.push(mapKeyXhr);\n }\n const initSegmentOptions = merge(xhrOptions, {\n uri: segment.map.resolvedUri,\n responseType: 'arraybuffer',\n headers: segmentXhrHeaders(segment.map)\n });\n const initSegmentRequestCallback = handleInitSegmentResponse({\n segment,\n finishProcessingFn\n });\n const initSegmentXhr = xhr(initSegmentOptions, initSegmentRequestCallback);\n activeXhrs.push(initSegmentXhr);\n }\n const segmentRequestOptions = merge(xhrOptions, {\n uri: segment.part && segment.part.resolvedUri || segment.resolvedUri,\n responseType: 'arraybuffer',\n headers: segmentXhrHeaders(segment)\n });\n const segmentRequestCallback = handleSegmentResponse({\n segment,\n finishProcessingFn,\n responseType: segmentRequestOptions.responseType\n });\n const segmentXhr = xhr(segmentRequestOptions, segmentRequestCallback);\n segmentXhr.addEventListener('progress', handleProgress({\n segment,\n progressFn,\n trackInfoFn,\n timingInfoFn,\n videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn,\n id3Fn,\n captionsFn,\n isEndOfTimeline,\n endedTimelineFn,\n dataFn\n }));\n activeXhrs.push(segmentXhr); // since all parts of the request must be considered, but should not make callbacks\n // multiple times, provide a shared state object\n\n const loadendState = {};\n activeXhrs.forEach(activeXhr => {\n activeXhr.addEventListener('loadend', handleLoadEnd({\n loadendState,\n abortFn\n }));\n });\n return () => abortAll(activeXhrs);\n};\n\n/**\n * @file - codecs.js - Handles tasks regarding codec strings such as translating them to\n * codec strings, or translating codec strings into objects that can be examined.\n */\nconst logFn$1 = logger('CodecUtils');\n/**\n * Returns a set of codec strings parsed from the playlist or the default\n * codec strings if no codecs were specified in the playlist\n *\n * @param {Playlist} media the current media playlist\n * @return {Object} an object with the video and audio codecs\n */\n\nconst getCodecs = function (media) {\n // if the codecs were explicitly specified, use them instead of the\n // defaults\n const mediaAttributes = media.attributes || {};\n if (mediaAttributes.CODECS) {\n return parseCodecs(mediaAttributes.CODECS);\n }\n};\nconst isMaat = (main, media) => {\n const mediaAttributes = media.attributes || {};\n return main && main.mediaGroups && main.mediaGroups.AUDIO && mediaAttributes.AUDIO && main.mediaGroups.AUDIO[mediaAttributes.AUDIO];\n};\nconst isMuxed = (main, media) => {\n if (!isMaat(main, media)) {\n return true;\n }\n const mediaAttributes = media.attributes || {};\n const audioGroup = main.mediaGroups.AUDIO[mediaAttributes.AUDIO];\n for (const groupId in audioGroup) {\n // If an audio group has a URI (the case for HLS, as HLS will use external playlists),\n // or there are listed playlists (the case for DASH, as the manifest will have already\n // provided all of the details necessary to generate the audio playlist, as opposed to\n // HLS' externally requested playlists), then the content is demuxed.\n if (!audioGroup[groupId].uri && !audioGroup[groupId].playlists) {\n return true;\n }\n }\n return false;\n};\nconst unwrapCodecList = function (codecList) {\n const codecs = {};\n codecList.forEach(({\n mediaType,\n type,\n details\n }) => {\n codecs[mediaType] = codecs[mediaType] || [];\n codecs[mediaType].push(translateLegacyCodec(`${type}${details}`));\n });\n Object.keys(codecs).forEach(function (mediaType) {\n if (codecs[mediaType].length > 1) {\n logFn$1(`multiple ${mediaType} codecs found as attributes: ${codecs[mediaType].join(', ')}. Setting playlist codecs to null so that we wait for mux.js to probe segments for real codecs.`);\n codecs[mediaType] = null;\n return;\n }\n codecs[mediaType] = codecs[mediaType][0];\n });\n return codecs;\n};\nconst codecCount = function (codecObj) {\n let count = 0;\n if (codecObj.audio) {\n count++;\n }\n if (codecObj.video) {\n count++;\n }\n return count;\n};\n/**\n * Calculates the codec strings for a working configuration of\n * SourceBuffers to play variant streams in a main playlist. If\n * there is no possible working configuration, an empty object will be\n * returned.\n *\n * @param main {Object} the m3u8 object for the main playlist\n * @param media {Object} the m3u8 object for the variant playlist\n * @return {Object} the codec strings.\n *\n * @private\n */\n\nconst codecsForPlaylist = function (main, media) {\n const mediaAttributes = media.attributes || {};\n const codecInfo = unwrapCodecList(getCodecs(media) || []); // HLS with multiple-audio tracks must always get an audio codec.\n // Put another way, there is no way to have a video-only multiple-audio HLS!\n\n if (isMaat(main, media) && !codecInfo.audio) {\n if (!isMuxed(main, media)) {\n // It is possible for codecs to be specified on the audio media group playlist but\n // not on the rendition playlist. This is mostly the case for DASH, where audio and\n // video are always separate (and separately specified).\n const defaultCodecs = unwrapCodecList(codecsFromDefault(main, mediaAttributes.AUDIO) || []);\n if (defaultCodecs.audio) {\n codecInfo.audio = defaultCodecs.audio;\n }\n }\n }\n return codecInfo;\n};\nconst logFn = logger('PlaylistSelector');\nconst representationToString = function (representation) {\n if (!representation || !representation.playlist) {\n return;\n }\n const playlist = representation.playlist;\n return JSON.stringify({\n id: playlist.id,\n bandwidth: representation.bandwidth,\n width: representation.width,\n height: representation.height,\n codecs: playlist.attributes && playlist.attributes.CODECS || ''\n });\n}; // Utilities\n\n/**\n * Returns the CSS value for the specified property on an element\n * using `getComputedStyle`. Firefox has a long-standing issue where\n * getComputedStyle() may return null when running in an iframe with\n * `display: none`.\n *\n * @see https://bugzilla.mozilla.org/show_bug.cgi?id=548397\n * @param {HTMLElement} el the htmlelement to work on\n * @param {string} the proprety to get the style for\n */\n\nconst safeGetComputedStyle = function (el, property) {\n if (!el) {\n return '';\n }\n const result = window$1.getComputedStyle(el);\n if (!result) {\n return '';\n }\n return result[property];\n};\n/**\n * Resuable stable sort function\n *\n * @param {Playlists} array\n * @param {Function} sortFn Different comparators\n * @function stableSort\n */\n\nconst stableSort = function (array, sortFn) {\n const newArray = array.slice();\n array.sort(function (left, right) {\n const cmp = sortFn(left, right);\n if (cmp === 0) {\n return newArray.indexOf(left) - newArray.indexOf(right);\n }\n return cmp;\n });\n};\n/**\n * A comparator function to sort two playlist object by bandwidth.\n *\n * @param {Object} left a media playlist object\n * @param {Object} right a media playlist object\n * @return {number} Greater than zero if the bandwidth attribute of\n * left is greater than the corresponding attribute of right. Less\n * than zero if the bandwidth of right is greater than left and\n * exactly zero if the two are equal.\n */\n\nconst comparePlaylistBandwidth = function (left, right) {\n let leftBandwidth;\n let rightBandwidth;\n if (left.attributes.BANDWIDTH) {\n leftBandwidth = left.attributes.BANDWIDTH;\n }\n leftBandwidth = leftBandwidth || window$1.Number.MAX_VALUE;\n if (right.attributes.BANDWIDTH) {\n rightBandwidth = right.attributes.BANDWIDTH;\n }\n rightBandwidth = rightBandwidth || window$1.Number.MAX_VALUE;\n return leftBandwidth - rightBandwidth;\n};\n/**\n * A comparator function to sort two playlist object by resolution (width).\n *\n * @param {Object} left a media playlist object\n * @param {Object} right a media playlist object\n * @return {number} Greater than zero if the resolution.width attribute of\n * left is greater than the corresponding attribute of right. Less\n * than zero if the resolution.width of right is greater than left and\n * exactly zero if the two are equal.\n */\n\nconst comparePlaylistResolution = function (left, right) {\n let leftWidth;\n let rightWidth;\n if (left.attributes.RESOLUTION && left.attributes.RESOLUTION.width) {\n leftWidth = left.attributes.RESOLUTION.width;\n }\n leftWidth = leftWidth || window$1.Number.MAX_VALUE;\n if (right.attributes.RESOLUTION && right.attributes.RESOLUTION.width) {\n rightWidth = right.attributes.RESOLUTION.width;\n }\n rightWidth = rightWidth || window$1.Number.MAX_VALUE; // NOTE - Fallback to bandwidth sort as appropriate in cases where multiple renditions\n // have the same media dimensions/ resolution\n\n if (leftWidth === rightWidth && left.attributes.BANDWIDTH && right.attributes.BANDWIDTH) {\n return left.attributes.BANDWIDTH - right.attributes.BANDWIDTH;\n }\n return leftWidth - rightWidth;\n};\n/**\n * Chooses the appropriate media playlist based on bandwidth and player size\n *\n * @param {Object} main\n * Object representation of the main manifest\n * @param {number} playerBandwidth\n * Current calculated bandwidth of the player\n * @param {number} playerWidth\n * Current width of the player element (should account for the device pixel ratio)\n * @param {number} playerHeight\n * Current height of the player element (should account for the device pixel ratio)\n * @param {boolean} limitRenditionByPlayerDimensions\n * True if the player width and height should be used during the selection, false otherwise\n * @param {Object} playlistController\n * the current playlistController object\n * @return {Playlist} the highest bitrate playlist less than the\n * currently detected bandwidth, accounting for some amount of\n * bandwidth variance\n */\n\nlet simpleSelector = function (main, playerBandwidth, playerWidth, playerHeight, limitRenditionByPlayerDimensions, playlistController) {\n // If we end up getting called before `main` is available, exit early\n if (!main) {\n return;\n }\n const options = {\n bandwidth: playerBandwidth,\n width: playerWidth,\n height: playerHeight,\n limitRenditionByPlayerDimensions\n };\n let playlists = main.playlists; // if playlist is audio only, select between currently active audio group playlists.\n\n if (Playlist.isAudioOnly(main)) {\n playlists = playlistController.getAudioTrackPlaylists_(); // add audioOnly to options so that we log audioOnly: true\n // at the buttom of this function for debugging.\n\n options.audioOnly = true;\n } // convert the playlists to an intermediary representation to make comparisons easier\n\n let sortedPlaylistReps = playlists.map(playlist => {\n let bandwidth;\n const width = playlist.attributes && playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.width;\n const height = playlist.attributes && playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.height;\n bandwidth = playlist.attributes && playlist.attributes.BANDWIDTH;\n bandwidth = bandwidth || window$1.Number.MAX_VALUE;\n return {\n bandwidth,\n width,\n height,\n playlist\n };\n });\n stableSort(sortedPlaylistReps, (left, right) => left.bandwidth - right.bandwidth); // filter out any playlists that have been excluded due to\n // incompatible configurations\n\n sortedPlaylistReps = sortedPlaylistReps.filter(rep => !Playlist.isIncompatible(rep.playlist)); // filter out any playlists that have been disabled manually through the representations\n // api or excluded temporarily due to playback errors.\n\n let enabledPlaylistReps = sortedPlaylistReps.filter(rep => Playlist.isEnabled(rep.playlist));\n if (!enabledPlaylistReps.length) {\n // if there are no enabled playlists, then they have all been excluded or disabled\n // by the user through the representations api. In this case, ignore exclusion and\n // fallback to what the user wants by using playlists the user has not disabled.\n enabledPlaylistReps = sortedPlaylistReps.filter(rep => !Playlist.isDisabled(rep.playlist));\n } // filter out any variant that has greater effective bitrate\n // than the current estimated bandwidth\n\n const bandwidthPlaylistReps = enabledPlaylistReps.filter(rep => rep.bandwidth * Config.BANDWIDTH_VARIANCE < playerBandwidth);\n let highestRemainingBandwidthRep = bandwidthPlaylistReps[bandwidthPlaylistReps.length - 1]; // get all of the renditions with the same (highest) bandwidth\n // and then taking the very first element\n\n const bandwidthBestRep = bandwidthPlaylistReps.filter(rep => rep.bandwidth === highestRemainingBandwidthRep.bandwidth)[0]; // if we're not going to limit renditions by player size, make an early decision.\n\n if (limitRenditionByPlayerDimensions === false) {\n const chosenRep = bandwidthBestRep || enabledPlaylistReps[0] || sortedPlaylistReps[0];\n if (chosenRep && chosenRep.playlist) {\n let type = 'sortedPlaylistReps';\n if (bandwidthBestRep) {\n type = 'bandwidthBestRep';\n }\n if (enabledPlaylistReps[0]) {\n type = 'enabledPlaylistReps';\n }\n logFn(`choosing ${representationToString(chosenRep)} using ${type} with options`, options);\n return chosenRep.playlist;\n }\n logFn('could not choose a playlist with options', options);\n return null;\n } // filter out playlists without resolution information\n\n const haveResolution = bandwidthPlaylistReps.filter(rep => rep.width && rep.height); // sort variants by resolution\n\n stableSort(haveResolution, (left, right) => left.width - right.width); // if we have the exact resolution as the player use it\n\n const resolutionBestRepList = haveResolution.filter(rep => rep.width === playerWidth && rep.height === playerHeight);\n highestRemainingBandwidthRep = resolutionBestRepList[resolutionBestRepList.length - 1]; // ensure that we pick the highest bandwidth variant that have exact resolution\n\n const resolutionBestRep = resolutionBestRepList.filter(rep => rep.bandwidth === highestRemainingBandwidthRep.bandwidth)[0];\n let resolutionPlusOneList;\n let resolutionPlusOneSmallest;\n let resolutionPlusOneRep; // find the smallest variant that is larger than the player\n // if there is no match of exact resolution\n\n if (!resolutionBestRep) {\n resolutionPlusOneList = haveResolution.filter(rep => rep.width > playerWidth || rep.height > playerHeight); // find all the variants have the same smallest resolution\n\n resolutionPlusOneSmallest = resolutionPlusOneList.filter(rep => rep.width === resolutionPlusOneList[0].width && rep.height === resolutionPlusOneList[0].height); // ensure that we also pick the highest bandwidth variant that\n // is just-larger-than the video player\n\n highestRemainingBandwidthRep = resolutionPlusOneSmallest[resolutionPlusOneSmallest.length - 1];\n resolutionPlusOneRep = resolutionPlusOneSmallest.filter(rep => rep.bandwidth === highestRemainingBandwidthRep.bandwidth)[0];\n }\n let leastPixelDiffRep; // If this selector proves to be better than others,\n // resolutionPlusOneRep and resolutionBestRep and all\n // the code involving them should be removed.\n\n if (playlistController.leastPixelDiffSelector) {\n // find the variant that is closest to the player's pixel size\n const leastPixelDiffList = haveResolution.map(rep => {\n rep.pixelDiff = Math.abs(rep.width - playerWidth) + Math.abs(rep.height - playerHeight);\n return rep;\n }); // get the highest bandwidth, closest resolution playlist\n\n stableSort(leastPixelDiffList, (left, right) => {\n // sort by highest bandwidth if pixelDiff is the same\n if (left.pixelDiff === right.pixelDiff) {\n return right.bandwidth - left.bandwidth;\n }\n return left.pixelDiff - right.pixelDiff;\n });\n leastPixelDiffRep = leastPixelDiffList[0];\n } // fallback chain of variants\n\n const chosenRep = leastPixelDiffRep || resolutionPlusOneRep || resolutionBestRep || bandwidthBestRep || enabledPlaylistReps[0] || sortedPlaylistReps[0];\n if (chosenRep && chosenRep.playlist) {\n let type = 'sortedPlaylistReps';\n if (leastPixelDiffRep) {\n type = 'leastPixelDiffRep';\n } else if (resolutionPlusOneRep) {\n type = 'resolutionPlusOneRep';\n } else if (resolutionBestRep) {\n type = 'resolutionBestRep';\n } else if (bandwidthBestRep) {\n type = 'bandwidthBestRep';\n } else if (enabledPlaylistReps[0]) {\n type = 'enabledPlaylistReps';\n }\n logFn(`choosing ${representationToString(chosenRep)} using ${type} with options`, options);\n return chosenRep.playlist;\n }\n logFn('could not choose a playlist with options', options);\n return null;\n};\n\n/**\n * Chooses the appropriate media playlist based on the most recent\n * bandwidth estimate and the player size.\n *\n * Expects to be called within the context of an instance of VhsHandler\n *\n * @return {Playlist} the highest bitrate playlist less than the\n * currently detected bandwidth, accounting for some amount of\n * bandwidth variance\n */\n\nconst lastBandwidthSelector = function () {\n const pixelRatio = this.useDevicePixelRatio ? window$1.devicePixelRatio || 1 : 1;\n return simpleSelector(this.playlists.main, this.systemBandwidth, parseInt(safeGetComputedStyle(this.tech_.el(), 'width'), 10) * pixelRatio, parseInt(safeGetComputedStyle(this.tech_.el(), 'height'), 10) * pixelRatio, this.limitRenditionByPlayerDimensions, this.playlistController_);\n};\n/**\n * Chooses the appropriate media playlist based on an\n * exponential-weighted moving average of the bandwidth after\n * filtering for player size.\n *\n * Expects to be called within the context of an instance of VhsHandler\n *\n * @param {number} decay - a number between 0 and 1. Higher values of\n * this parameter will cause previous bandwidth estimates to lose\n * significance more quickly.\n * @return {Function} a function which can be invoked to create a new\n * playlist selector function.\n * @see https://en.wikipedia.org/wiki/Moving_average#Exponential_moving_average\n */\n\nconst movingAverageBandwidthSelector = function (decay) {\n let average = -1;\n let lastSystemBandwidth = -1;\n if (decay < 0 || decay > 1) {\n throw new Error('Moving average bandwidth decay must be between 0 and 1.');\n }\n return function () {\n const pixelRatio = this.useDevicePixelRatio ? window$1.devicePixelRatio || 1 : 1;\n if (average < 0) {\n average = this.systemBandwidth;\n lastSystemBandwidth = this.systemBandwidth;\n } // stop the average value from decaying for every 250ms\n // when the systemBandwidth is constant\n // and\n // stop average from setting to a very low value when the\n // systemBandwidth becomes 0 in case of chunk cancellation\n\n if (this.systemBandwidth > 0 && this.systemBandwidth !== lastSystemBandwidth) {\n average = decay * this.systemBandwidth + (1 - decay) * average;\n lastSystemBandwidth = this.systemBandwidth;\n }\n return simpleSelector(this.playlists.main, average, parseInt(safeGetComputedStyle(this.tech_.el(), 'width'), 10) * pixelRatio, parseInt(safeGetComputedStyle(this.tech_.el(), 'height'), 10) * pixelRatio, this.limitRenditionByPlayerDimensions, this.playlistController_);\n };\n};\n/**\n * Chooses the appropriate media playlist based on the potential to rebuffer\n *\n * @param {Object} settings\n * Object of information required to use this selector\n * @param {Object} settings.main\n * Object representation of the main manifest\n * @param {number} settings.currentTime\n * The current time of the player\n * @param {number} settings.bandwidth\n * Current measured bandwidth\n * @param {number} settings.duration\n * Duration of the media\n * @param {number} settings.segmentDuration\n * Segment duration to be used in round trip time calculations\n * @param {number} settings.timeUntilRebuffer\n * Time left in seconds until the player has to rebuffer\n * @param {number} settings.currentTimeline\n * The current timeline segments are being loaded from\n * @param {SyncController} settings.syncController\n * SyncController for determining if we have a sync point for a given playlist\n * @return {Object|null}\n * {Object} return.playlist\n * The highest bandwidth playlist with the least amount of rebuffering\n * {Number} return.rebufferingImpact\n * The amount of time in seconds switching to this playlist will rebuffer. A\n * negative value means that switching will cause zero rebuffering.\n */\n\nconst minRebufferMaxBandwidthSelector = function (settings) {\n const {\n main,\n currentTime,\n bandwidth,\n duration,\n segmentDuration,\n timeUntilRebuffer,\n currentTimeline,\n syncController\n } = settings; // filter out any playlists that have been excluded due to\n // incompatible configurations\n\n const compatiblePlaylists = main.playlists.filter(playlist => !Playlist.isIncompatible(playlist)); // filter out any playlists that have been disabled manually through the representations\n // api or excluded temporarily due to playback errors.\n\n let enabledPlaylists = compatiblePlaylists.filter(Playlist.isEnabled);\n if (!enabledPlaylists.length) {\n // if there are no enabled playlists, then they have all been excluded or disabled\n // by the user through the representations api. In this case, ignore exclusion and\n // fallback to what the user wants by using playlists the user has not disabled.\n enabledPlaylists = compatiblePlaylists.filter(playlist => !Playlist.isDisabled(playlist));\n }\n const bandwidthPlaylists = enabledPlaylists.filter(Playlist.hasAttribute.bind(null, 'BANDWIDTH'));\n const rebufferingEstimates = bandwidthPlaylists.map(playlist => {\n const syncPoint = syncController.getSyncPoint(playlist, duration, currentTimeline, currentTime); // If there is no sync point for this playlist, switching to it will require a\n // sync request first. This will double the request time\n\n const numRequests = syncPoint ? 1 : 2;\n const requestTimeEstimate = Playlist.estimateSegmentRequestTime(segmentDuration, bandwidth, playlist);\n const rebufferingImpact = requestTimeEstimate * numRequests - timeUntilRebuffer;\n return {\n playlist,\n rebufferingImpact\n };\n });\n const noRebufferingPlaylists = rebufferingEstimates.filter(estimate => estimate.rebufferingImpact <= 0); // Sort by bandwidth DESC\n\n stableSort(noRebufferingPlaylists, (a, b) => comparePlaylistBandwidth(b.playlist, a.playlist));\n if (noRebufferingPlaylists.length) {\n return noRebufferingPlaylists[0];\n }\n stableSort(rebufferingEstimates, (a, b) => a.rebufferingImpact - b.rebufferingImpact);\n return rebufferingEstimates[0] || null;\n};\n/**\n * Chooses the appropriate media playlist, which in this case is the lowest bitrate\n * one with video. If no renditions with video exist, return the lowest audio rendition.\n *\n * Expects to be called within the context of an instance of VhsHandler\n *\n * @return {Object|null}\n * {Object} return.playlist\n * The lowest bitrate playlist that contains a video codec. If no such rendition\n * exists pick the lowest audio rendition.\n */\n\nconst lowestBitrateCompatibleVariantSelector = function () {\n // filter out any playlists that have been excluded due to\n // incompatible configurations or playback errors\n const playlists = this.playlists.main.playlists.filter(Playlist.isEnabled); // Sort ascending by bitrate\n\n stableSort(playlists, (a, b) => comparePlaylistBandwidth(a, b)); // Parse and assume that playlists with no video codec have no video\n // (this is not necessarily true, although it is generally true).\n //\n // If an entire manifest has no valid videos everything will get filtered\n // out.\n\n const playlistsWithVideo = playlists.filter(playlist => !!codecsForPlaylist(this.playlists.main, playlist).video);\n return playlistsWithVideo[0] || null;\n};\n\n/**\n * Combine all segments into a single Uint8Array\n *\n * @param {Object} segmentObj\n * @return {Uint8Array} concatenated bytes\n * @private\n */\nconst concatSegments = segmentObj => {\n let offset = 0;\n let tempBuffer;\n if (segmentObj.bytes) {\n tempBuffer = new Uint8Array(segmentObj.bytes); // combine the individual segments into one large typed-array\n\n segmentObj.segments.forEach(segment => {\n tempBuffer.set(segment, offset);\n offset += segment.byteLength;\n });\n }\n return tempBuffer;\n};\n\n/**\n * @file text-tracks.js\n */\n/**\n * Create captions text tracks on video.js if they do not exist\n *\n * @param {Object} inbandTextTracks a reference to current inbandTextTracks\n * @param {Object} tech the video.js tech\n * @param {Object} captionStream the caption stream to create\n * @private\n */\n\nconst createCaptionsTrackIfNotExists = function (inbandTextTracks, tech, captionStream) {\n if (!inbandTextTracks[captionStream]) {\n tech.trigger({\n type: 'usage',\n name: 'vhs-608'\n });\n let instreamId = captionStream; // we need to translate SERVICEn for 708 to how mux.js currently labels them\n\n if (/^cc708_/.test(captionStream)) {\n instreamId = 'SERVICE' + captionStream.split('_')[1];\n }\n const track = tech.textTracks().getTrackById(instreamId);\n if (track) {\n // Resuse an existing track with a CC# id because this was\n // very likely created by videojs-contrib-hls from information\n // in the m3u8 for us to use\n inbandTextTracks[captionStream] = track;\n } else {\n // This section gets called when we have caption services that aren't specified in the manifest.\n // Manifest level caption services are handled in media-groups.js under CLOSED-CAPTIONS.\n const captionServices = tech.options_.vhs && tech.options_.vhs.captionServices || {};\n let label = captionStream;\n let language = captionStream;\n let def = false;\n const captionService = captionServices[instreamId];\n if (captionService) {\n label = captionService.label;\n language = captionService.language;\n def = captionService.default;\n } // Otherwise, create a track with the default `CC#` label and\n // without a language\n\n inbandTextTracks[captionStream] = tech.addRemoteTextTrack({\n kind: 'captions',\n id: instreamId,\n // TODO: investigate why this doesn't seem to turn the caption on by default\n default: def,\n label,\n language\n }, false).track;\n }\n }\n};\n/**\n * Add caption text track data to a source handler given an array of captions\n *\n * @param {Object}\n * @param {Object} inbandTextTracks the inband text tracks\n * @param {number} timestampOffset the timestamp offset of the source buffer\n * @param {Array} captionArray an array of caption data\n * @private\n */\n\nconst addCaptionData = function ({\n inbandTextTracks,\n captionArray,\n timestampOffset\n}) {\n if (!captionArray) {\n return;\n }\n const Cue = window$1.WebKitDataCue || window$1.VTTCue;\n captionArray.forEach(caption => {\n const track = caption.stream; // in CEA 608 captions, video.js/mux.js sends a content array\n // with positioning data\n\n if (caption.content) {\n caption.content.forEach(value => {\n const cue = new Cue(caption.startTime + timestampOffset, caption.endTime + timestampOffset, value.text);\n cue.line = value.line;\n cue.align = 'left';\n cue.position = value.position;\n cue.positionAlign = 'line-left';\n inbandTextTracks[track].addCue(cue);\n });\n } else {\n // otherwise, a text value with combined captions is sent\n inbandTextTracks[track].addCue(new Cue(caption.startTime + timestampOffset, caption.endTime + timestampOffset, caption.text));\n }\n });\n};\n/**\n * Define properties on a cue for backwards compatability,\n * but warn the user that the way that they are using it\n * is depricated and will be removed at a later date.\n *\n * @param {Cue} cue the cue to add the properties on\n * @private\n */\n\nconst deprecateOldCue = function (cue) {\n Object.defineProperties(cue.frame, {\n id: {\n get() {\n videojs.log.warn('cue.frame.id is deprecated. Use cue.value.key instead.');\n return cue.value.key;\n }\n },\n value: {\n get() {\n videojs.log.warn('cue.frame.value is deprecated. Use cue.value.data instead.');\n return cue.value.data;\n }\n },\n privateData: {\n get() {\n videojs.log.warn('cue.frame.privateData is deprecated. Use cue.value.data instead.');\n return cue.value.data;\n }\n }\n });\n};\n/**\n * Add metadata text track data to a source handler given an array of metadata\n *\n * @param {Object}\n * @param {Object} inbandTextTracks the inband text tracks\n * @param {Array} metadataArray an array of meta data\n * @param {number} timestampOffset the timestamp offset of the source buffer\n * @param {number} videoDuration the duration of the video\n * @private\n */\n\nconst addMetadata = ({\n inbandTextTracks,\n metadataArray,\n timestampOffset,\n videoDuration\n}) => {\n if (!metadataArray) {\n return;\n }\n const Cue = window$1.WebKitDataCue || window$1.VTTCue;\n const metadataTrack = inbandTextTracks.metadataTrack_;\n if (!metadataTrack) {\n return;\n }\n metadataArray.forEach(metadata => {\n const time = metadata.cueTime + timestampOffset; // if time isn't a finite number between 0 and Infinity, like NaN,\n // ignore this bit of metadata.\n // This likely occurs when you have an non-timed ID3 tag like TIT2,\n // which is the \"Title/Songname/Content description\" frame\n\n if (typeof time !== 'number' || window$1.isNaN(time) || time < 0 || !(time < Infinity)) {\n return;\n } // If we have no frames, we can't create a cue.\n\n if (!metadata.frames || !metadata.frames.length) {\n return;\n }\n metadata.frames.forEach(frame => {\n const cue = new Cue(time, time, frame.value || frame.url || frame.data || '');\n cue.frame = frame;\n cue.value = frame;\n deprecateOldCue(cue);\n metadataTrack.addCue(cue);\n });\n });\n if (!metadataTrack.cues || !metadataTrack.cues.length) {\n return;\n } // Updating the metadeta cues so that\n // the endTime of each cue is the startTime of the next cue\n // the endTime of last cue is the duration of the video\n\n const cues = metadataTrack.cues;\n const cuesArray = []; // Create a copy of the TextTrackCueList...\n // ...disregarding cues with a falsey value\n\n for (let i = 0; i < cues.length; i++) {\n if (cues[i]) {\n cuesArray.push(cues[i]);\n }\n } // Group cues by their startTime value\n\n const cuesGroupedByStartTime = cuesArray.reduce((obj, cue) => {\n const timeSlot = obj[cue.startTime] || [];\n timeSlot.push(cue);\n obj[cue.startTime] = timeSlot;\n return obj;\n }, {}); // Sort startTimes by ascending order\n\n const sortedStartTimes = Object.keys(cuesGroupedByStartTime).sort((a, b) => Number(a) - Number(b)); // Map each cue group's endTime to the next group's startTime\n\n sortedStartTimes.forEach((startTime, idx) => {\n const cueGroup = cuesGroupedByStartTime[startTime];\n const finiteDuration = isFinite(videoDuration) ? videoDuration : 0;\n const nextTime = Number(sortedStartTimes[idx + 1]) || finiteDuration; // Map each cue's endTime the next group's startTime\n\n cueGroup.forEach(cue => {\n cue.endTime = nextTime;\n });\n });\n}; // object for mapping daterange attributes\n\nconst dateRangeAttr = {\n id: 'ID',\n class: 'CLASS',\n startDate: 'START-DATE',\n duration: 'DURATION',\n endDate: 'END-DATE',\n endOnNext: 'END-ON-NEXT',\n plannedDuration: 'PLANNED-DURATION',\n scte35Out: 'SCTE35-OUT',\n scte35In: 'SCTE35-IN'\n};\nconst dateRangeKeysToOmit = new Set(['id', 'class', 'startDate', 'duration', 'endDate', 'endOnNext', 'startTime', 'endTime', 'processDateRange']);\n/**\n * Add DateRange metadata text track to a source handler given an array of metadata\n *\n * @param {Object}\n * @param {Object} inbandTextTracks the inband text tracks\n * @param {Array} dateRanges parsed media playlist\n * @private\n */\n\nconst addDateRangeMetadata = ({\n inbandTextTracks,\n dateRanges\n}) => {\n const metadataTrack = inbandTextTracks.metadataTrack_;\n if (!metadataTrack) {\n return;\n }\n const Cue = window$1.WebKitDataCue || window$1.VTTCue;\n dateRanges.forEach(dateRange => {\n // we generate multiple cues for each date range with different attributes\n for (const key of Object.keys(dateRange)) {\n if (dateRangeKeysToOmit.has(key)) {\n continue;\n }\n const cue = new Cue(dateRange.startTime, dateRange.endTime, '');\n cue.id = dateRange.id;\n cue.type = 'com.apple.quicktime.HLS';\n cue.value = {\n key: dateRangeAttr[key],\n data: dateRange[key]\n };\n if (key === 'scte35Out' || key === 'scte35In') {\n cue.value.data = new Uint8Array(cue.value.data.match(/[\\da-f]{2}/gi)).buffer;\n }\n metadataTrack.addCue(cue);\n }\n dateRange.processDateRange();\n });\n};\n/**\n * Create metadata text track on video.js if it does not exist\n *\n * @param {Object} inbandTextTracks a reference to current inbandTextTracks\n * @param {string} dispatchType the inband metadata track dispatch type\n * @param {Object} tech the video.js tech\n * @private\n */\n\nconst createMetadataTrackIfNotExists = (inbandTextTracks, dispatchType, tech) => {\n if (inbandTextTracks.metadataTrack_) {\n return;\n }\n inbandTextTracks.metadataTrack_ = tech.addRemoteTextTrack({\n kind: 'metadata',\n label: 'Timed Metadata'\n }, false).track;\n if (!videojs.browser.IS_ANY_SAFARI) {\n inbandTextTracks.metadataTrack_.inBandMetadataTrackDispatchType = dispatchType;\n }\n};\n/**\n * Remove cues from a track on video.js.\n *\n * @param {Double} start start of where we should remove the cue\n * @param {Double} end end of where the we should remove the cue\n * @param {Object} track the text track to remove the cues from\n * @private\n */\n\nconst removeCuesFromTrack = function (start, end, track) {\n let i;\n let cue;\n if (!track) {\n return;\n }\n if (!track.cues) {\n return;\n }\n i = track.cues.length;\n while (i--) {\n cue = track.cues[i]; // Remove any cue within the provided start and end time\n\n if (cue.startTime >= start && cue.endTime <= end) {\n track.removeCue(cue);\n }\n }\n};\n/**\n * Remove duplicate cues from a track on video.js (a cue is considered a\n * duplicate if it has the same time interval and text as another)\n *\n * @param {Object} track the text track to remove the duplicate cues from\n * @private\n */\n\nconst removeDuplicateCuesFromTrack = function (track) {\n const cues = track.cues;\n if (!cues) {\n return;\n }\n const uniqueCues = {};\n for (let i = cues.length - 1; i >= 0; i--) {\n const cue = cues[i];\n const cueKey = `${cue.startTime}-${cue.endTime}-${cue.text}`;\n if (uniqueCues[cueKey]) {\n track.removeCue(cue);\n } else {\n uniqueCues[cueKey] = cue;\n }\n }\n};\n\n/**\n * Returns a list of gops in the buffer that have a pts value of 3 seconds or more in\n * front of current time.\n *\n * @param {Array} buffer\n * The current buffer of gop information\n * @param {number} currentTime\n * The current time\n * @param {Double} mapping\n * Offset to map display time to stream presentation time\n * @return {Array}\n * List of gops considered safe to append over\n */\n\nconst gopsSafeToAlignWith = (buffer, currentTime, mapping) => {\n if (typeof currentTime === 'undefined' || currentTime === null || !buffer.length) {\n return [];\n } // pts value for current time + 3 seconds to give a bit more wiggle room\n\n const currentTimePts = Math.ceil((currentTime - mapping + 3) * ONE_SECOND_IN_TS);\n let i;\n for (i = 0; i < buffer.length; i++) {\n if (buffer[i].pts > currentTimePts) {\n break;\n }\n }\n return buffer.slice(i);\n};\n/**\n * Appends gop information (timing and byteLength) received by the transmuxer for the\n * gops appended in the last call to appendBuffer\n *\n * @param {Array} buffer\n * The current buffer of gop information\n * @param {Array} gops\n * List of new gop information\n * @param {boolean} replace\n * If true, replace the buffer with the new gop information. If false, append the\n * new gop information to the buffer in the right location of time.\n * @return {Array}\n * Updated list of gop information\n */\n\nconst updateGopBuffer = (buffer, gops, replace) => {\n if (!gops.length) {\n return buffer;\n }\n if (replace) {\n // If we are in safe append mode, then completely overwrite the gop buffer\n // with the most recent appeneded data. This will make sure that when appending\n // future segments, we only try to align with gops that are both ahead of current\n // time and in the last segment appended.\n return gops.slice();\n }\n const start = gops[0].pts;\n let i = 0;\n for (i; i < buffer.length; i++) {\n if (buffer[i].pts >= start) {\n break;\n }\n }\n return buffer.slice(0, i).concat(gops);\n};\n/**\n * Removes gop information in buffer that overlaps with provided start and end\n *\n * @param {Array} buffer\n * The current buffer of gop information\n * @param {Double} start\n * position to start the remove at\n * @param {Double} end\n * position to end the remove at\n * @param {Double} mapping\n * Offset to map display time to stream presentation time\n */\n\nconst removeGopBuffer = (buffer, start, end, mapping) => {\n const startPts = Math.ceil((start - mapping) * ONE_SECOND_IN_TS);\n const endPts = Math.ceil((end - mapping) * ONE_SECOND_IN_TS);\n const updatedBuffer = buffer.slice();\n let i = buffer.length;\n while (i--) {\n if (buffer[i].pts <= endPts) {\n break;\n }\n }\n if (i === -1) {\n // no removal because end of remove range is before start of buffer\n return updatedBuffer;\n }\n let j = i + 1;\n while (j--) {\n if (buffer[j].pts <= startPts) {\n break;\n }\n } // clamp remove range start to 0 index\n\n j = Math.max(j, 0);\n updatedBuffer.splice(j, i - j + 1);\n return updatedBuffer;\n};\nconst shallowEqual = function (a, b) {\n // if both are undefined\n // or one or the other is undefined\n // they are not equal\n if (!a && !b || !a && b || a && !b) {\n return false;\n } // they are the same object and thus, equal\n\n if (a === b) {\n return true;\n } // sort keys so we can make sure they have\n // all the same keys later.\n\n const akeys = Object.keys(a).sort();\n const bkeys = Object.keys(b).sort(); // different number of keys, not equal\n\n if (akeys.length !== bkeys.length) {\n return false;\n }\n for (let i = 0; i < akeys.length; i++) {\n const key = akeys[i]; // different sorted keys, not equal\n\n if (key !== bkeys[i]) {\n return false;\n } // different values, not equal\n\n if (a[key] !== b[key]) {\n return false;\n }\n }\n return true;\n};\n\n// https://www.w3.org/TR/WebIDL-1/#quotaexceedederror\nconst QUOTA_EXCEEDED_ERR = 22;\n\n/**\n * The segment loader has no recourse except to fetch a segment in the\n * current playlist and use the internal timestamps in that segment to\n * generate a syncPoint. This function returns a good candidate index\n * for that process.\n *\n * @param {Array} segments - the segments array from a playlist.\n * @return {number} An index of a segment from the playlist to load\n */\n\nconst getSyncSegmentCandidate = function (currentTimeline, segments, targetTime) {\n segments = segments || [];\n const timelineSegments = [];\n let time = 0;\n for (let i = 0; i < segments.length; i++) {\n const segment = segments[i];\n if (currentTimeline === segment.timeline) {\n timelineSegments.push(i);\n time += segment.duration;\n if (time > targetTime) {\n return i;\n }\n }\n }\n if (timelineSegments.length === 0) {\n return 0;\n } // default to the last timeline segment\n\n return timelineSegments[timelineSegments.length - 1];\n}; // In the event of a quota exceeded error, keep at least one second of back buffer. This\n// number was arbitrarily chosen and may be updated in the future, but seemed reasonable\n// as a start to prevent any potential issues with removing content too close to the\n// playhead.\n\nconst MIN_BACK_BUFFER = 1; // in ms\n\nconst CHECK_BUFFER_DELAY = 500;\nconst finite = num => typeof num === 'number' && isFinite(num); // With most content hovering around 30fps, if a segment has a duration less than a half\n// frame at 30fps or one frame at 60fps, the bandwidth and throughput calculations will\n// not accurately reflect the rest of the content.\n\nconst MIN_SEGMENT_DURATION_TO_SAVE_STATS = 1 / 60;\nconst illegalMediaSwitch = (loaderType, startingMedia, trackInfo) => {\n // Although these checks should most likely cover non 'main' types, for now it narrows\n // the scope of our checks.\n if (loaderType !== 'main' || !startingMedia || !trackInfo) {\n return null;\n }\n if (!trackInfo.hasAudio && !trackInfo.hasVideo) {\n return 'Neither audio nor video found in segment.';\n }\n if (startingMedia.hasVideo && !trackInfo.hasVideo) {\n return 'Only audio found in segment when we expected video.' + ' We can\\'t switch to audio only from a stream that had video.' + ' To get rid of this message, please add codec information to the manifest.';\n }\n if (!startingMedia.hasVideo && trackInfo.hasVideo) {\n return 'Video found in segment when we expected only audio.' + ' We can\\'t switch to a stream with video from an audio only stream.' + ' To get rid of this message, please add codec information to the manifest.';\n }\n return null;\n};\n/**\n * Calculates a time value that is safe to remove from the back buffer without interrupting\n * playback.\n *\n * @param {TimeRange} seekable\n * The current seekable range\n * @param {number} currentTime\n * The current time of the player\n * @param {number} targetDuration\n * The target duration of the current playlist\n * @return {number}\n * Time that is safe to remove from the back buffer without interrupting playback\n */\n\nconst safeBackBufferTrimTime = (seekable, currentTime, targetDuration) => {\n // 30 seconds before the playhead provides a safe default for trimming.\n //\n // Choosing a reasonable default is particularly important for high bitrate content and\n // VOD videos/live streams with large windows, as the buffer may end up overfilled and\n // throw an APPEND_BUFFER_ERR.\n let trimTime = currentTime - Config.BACK_BUFFER_LENGTH;\n if (seekable.length) {\n // Some live playlists may have a shorter window of content than the full allowed back\n // buffer. For these playlists, don't save content that's no longer within the window.\n trimTime = Math.max(trimTime, seekable.start(0));\n } // Don't remove within target duration of the current time to avoid the possibility of\n // removing the GOP currently being played, as removing it can cause playback stalls.\n\n const maxTrimTime = currentTime - targetDuration;\n return Math.min(maxTrimTime, trimTime);\n};\nconst segmentInfoString = segmentInfo => {\n const {\n startOfSegment,\n duration,\n segment,\n part,\n playlist: {\n mediaSequence: seq,\n id,\n segments = []\n },\n mediaIndex: index,\n partIndex,\n timeline\n } = segmentInfo;\n const segmentLen = segments.length - 1;\n let selection = 'mediaIndex/partIndex increment';\n if (segmentInfo.getMediaInfoForTime) {\n selection = `getMediaInfoForTime (${segmentInfo.getMediaInfoForTime})`;\n } else if (segmentInfo.isSyncRequest) {\n selection = 'getSyncSegmentCandidate (isSyncRequest)';\n }\n if (segmentInfo.independent) {\n selection += ` with independent ${segmentInfo.independent}`;\n }\n const hasPartIndex = typeof partIndex === 'number';\n const name = segmentInfo.segment.uri ? 'segment' : 'pre-segment';\n const zeroBasedPartCount = hasPartIndex ? getKnownPartCount({\n preloadSegment: segment\n }) - 1 : 0;\n return `${name} [${seq + index}/${seq + segmentLen}]` + (hasPartIndex ? ` part [${partIndex}/${zeroBasedPartCount}]` : '') + ` segment start/end [${segment.start} => ${segment.end}]` + (hasPartIndex ? ` part start/end [${part.start} => ${part.end}]` : '') + ` startOfSegment [${startOfSegment}]` + ` duration [${duration}]` + ` timeline [${timeline}]` + ` selected by [${selection}]` + ` playlist [${id}]`;\n};\nconst timingInfoPropertyForMedia = mediaType => `${mediaType}TimingInfo`;\nconst getBufferedEndOrFallback = (buffered, fallback) => buffered.length ? buffered.end(buffered.length - 1) : fallback;\n/**\n * Returns the timestamp offset to use for the segment.\n *\n * @param {number} segmentTimeline\n * The timeline of the segment\n * @param {number} currentTimeline\n * The timeline currently being followed by the loader\n * @param {number} startOfSegment\n * The estimated segment start\n * @param {TimeRange[]} buffered\n * The loader's buffer\n * @param {boolean} calculateTimestampOffsetForEachSegment\n * Feature flag to always calculate timestampOffset\n * @param {boolean} overrideCheck\n * If true, no checks are made to see if the timestamp offset value should be set,\n * but sets it directly to a value.\n *\n * @return {number|null}\n * Either a number representing a new timestamp offset, or null if the segment is\n * part of the same timeline\n */\n\nconst timestampOffsetForSegment = ({\n segmentTimeline,\n currentTimeline,\n startOfSegment,\n buffered,\n calculateTimestampOffsetForEachSegment,\n overrideCheck\n}) => {\n if (calculateTimestampOffsetForEachSegment) {\n return getBufferedEndOrFallback(buffered, startOfSegment);\n } // Check to see if we are crossing a discontinuity to see if we need to set the\n // timestamp offset on the transmuxer and source buffer.\n //\n // Previously, we changed the timestampOffset if the start of this segment was less than\n // the currently set timestampOffset, but this isn't desirable as it can produce bad\n // behavior, especially around long running live streams.\n\n if (!overrideCheck && segmentTimeline === currentTimeline) {\n return null;\n } // When changing renditions, it's possible to request a segment on an older timeline. For\n // instance, given two renditions with the following:\n //\n // #EXTINF:10\n // segment1\n // #EXT-X-DISCONTINUITY\n // #EXTINF:10\n // segment2\n // #EXTINF:10\n // segment3\n //\n // And the current player state:\n //\n // current time: 8\n // buffer: 0 => 20\n //\n // The next segment on the current rendition would be segment3, filling the buffer from\n // 20s onwards. However, if a rendition switch happens after segment2 was requested,\n // then the next segment to be requested will be segment1 from the new rendition in\n // order to fill time 8 and onwards. Using the buffered end would result in repeated\n // content (since it would position segment1 of the new rendition starting at 20s). This\n // case can be identified when the new segment's timeline is a prior value. Instead of\n // using the buffered end, the startOfSegment can be used, which, hopefully, will be\n // more accurate to the actual start time of the segment.\n\n if (segmentTimeline < currentTimeline) {\n return startOfSegment;\n } // segmentInfo.startOfSegment used to be used as the timestamp offset, however, that\n // value uses the end of the last segment if it is available. While this value\n // should often be correct, it's better to rely on the buffered end, as the new\n // content post discontinuity should line up with the buffered end as if it were\n // time 0 for the new content.\n\n return getBufferedEndOrFallback(buffered, startOfSegment);\n};\n/**\n * Returns whether or not the loader should wait for a timeline change from the timeline\n * change controller before processing the segment.\n *\n * Primary timing in VHS goes by video. This is different from most media players, as\n * audio is more often used as the primary timing source. For the foreseeable future, VHS\n * will continue to use video as the primary timing source, due to the current logic and\n * expectations built around it.\n\n * Since the timing follows video, in order to maintain sync, the video loader is\n * responsible for setting both audio and video source buffer timestamp offsets.\n *\n * Setting different values for audio and video source buffers could lead to\n * desyncing. The following examples demonstrate some of the situations where this\n * distinction is important. Note that all of these cases involve demuxed content. When\n * content is muxed, the audio and video are packaged together, therefore syncing\n * separate media playlists is not an issue.\n *\n * CASE 1: Audio prepares to load a new timeline before video:\n *\n * Timeline: 0 1\n * Audio Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n * Audio Loader: ^\n * Video Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n * Video Loader ^\n *\n * In the above example, the audio loader is preparing to load the 6th segment, the first\n * after a discontinuity, while the video loader is still loading the 5th segment, before\n * the discontinuity.\n *\n * If the audio loader goes ahead and loads and appends the 6th segment before the video\n * loader crosses the discontinuity, then when appended, the 6th audio segment will use\n * the timestamp offset from timeline 0. This will likely lead to desyncing. In addition,\n * the audio loader must provide the audioAppendStart value to trim the content in the\n * transmuxer, and that value relies on the audio timestamp offset. Since the audio\n * timestamp offset is set by the video (main) loader, the audio loader shouldn't load the\n * segment until that value is provided.\n *\n * CASE 2: Video prepares to load a new timeline before audio:\n *\n * Timeline: 0 1\n * Audio Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n * Audio Loader: ^\n * Video Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n * Video Loader ^\n *\n * In the above example, the video loader is preparing to load the 6th segment, the first\n * after a discontinuity, while the audio loader is still loading the 5th segment, before\n * the discontinuity.\n *\n * If the video loader goes ahead and loads and appends the 6th segment, then once the\n * segment is loaded and processed, both the video and audio timestamp offsets will be\n * set, since video is used as the primary timing source. This is to ensure content lines\n * up appropriately, as any modifications to the video timing are reflected by audio when\n * the video loader sets the audio and video timestamp offsets to the same value. However,\n * setting the timestamp offset for audio before audio has had a chance to change\n * timelines will likely lead to desyncing, as the audio loader will append segment 5 with\n * a timestamp intended to apply to segments from timeline 1 rather than timeline 0.\n *\n * CASE 3: When seeking, audio prepares to load a new timeline before video\n *\n * Timeline: 0 1\n * Audio Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n * Audio Loader: ^\n * Video Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n * Video Loader ^\n *\n * In the above example, both audio and video loaders are loading segments from timeline\n * 0, but imagine that the seek originated from timeline 1.\n *\n * When seeking to a new timeline, the timestamp offset will be set based on the expected\n * segment start of the loaded video segment. In order to maintain sync, the audio loader\n * must wait for the video loader to load its segment and update both the audio and video\n * timestamp offsets before it may load and append its own segment. This is the case\n * whether the seek results in a mismatched segment request (e.g., the audio loader\n * chooses to load segment 3 and the video loader chooses to load segment 4) or the\n * loaders choose to load the same segment index from each playlist, as the segments may\n * not be aligned perfectly, even for matching segment indexes.\n *\n * @param {Object} timelinechangeController\n * @param {number} currentTimeline\n * The timeline currently being followed by the loader\n * @param {number} segmentTimeline\n * The timeline of the segment being loaded\n * @param {('main'|'audio')} loaderType\n * The loader type\n * @param {boolean} audioDisabled\n * Whether the audio is disabled for the loader. This should only be true when the\n * loader may have muxed audio in its segment, but should not append it, e.g., for\n * the main loader when an alternate audio playlist is active.\n *\n * @return {boolean}\n * Whether the loader should wait for a timeline change from the timeline change\n * controller before processing the segment\n */\n\nconst shouldWaitForTimelineChange = ({\n timelineChangeController,\n currentTimeline,\n segmentTimeline,\n loaderType,\n audioDisabled\n}) => {\n if (currentTimeline === segmentTimeline) {\n return false;\n }\n if (loaderType === 'audio') {\n const lastMainTimelineChange = timelineChangeController.lastTimelineChange({\n type: 'main'\n }); // Audio loader should wait if:\n //\n // * main hasn't had a timeline change yet (thus has not loaded its first segment)\n // * main hasn't yet changed to the timeline audio is looking to load\n\n return !lastMainTimelineChange || lastMainTimelineChange.to !== segmentTimeline;\n } // The main loader only needs to wait for timeline changes if there's demuxed audio.\n // Otherwise, there's nothing to wait for, since audio would be muxed into the main\n // loader's segments (or the content is audio/video only and handled by the main\n // loader).\n\n if (loaderType === 'main' && audioDisabled) {\n const pendingAudioTimelineChange = timelineChangeController.pendingTimelineChange({\n type: 'audio'\n }); // Main loader should wait for the audio loader if audio is not pending a timeline\n // change to the current timeline.\n //\n // Since the main loader is responsible for setting the timestamp offset for both\n // audio and video, the main loader must wait for audio to be about to change to its\n // timeline before setting the offset, otherwise, if audio is behind in loading,\n // segments from the previous timeline would be adjusted by the new timestamp offset.\n //\n // This requirement means that video will not cross a timeline until the audio is\n // about to cross to it, so that way audio and video will always cross the timeline\n // together.\n //\n // In addition to normal timeline changes, these rules also apply to the start of a\n // stream (going from a non-existent timeline, -1, to timeline 0). It's important\n // that these rules apply to the first timeline change because if they did not, it's\n // possible that the main loader will cross two timelines before the audio loader has\n // crossed one. Logic may be implemented to handle the startup as a special case, but\n // it's easier to simply treat all timeline changes the same.\n\n if (pendingAudioTimelineChange && pendingAudioTimelineChange.to === segmentTimeline) {\n return false;\n }\n return true;\n }\n return false;\n};\nconst mediaDuration = timingInfos => {\n let maxDuration = 0;\n ['video', 'audio'].forEach(function (type) {\n const typeTimingInfo = timingInfos[`${type}TimingInfo`];\n if (!typeTimingInfo) {\n return;\n }\n const {\n start,\n end\n } = typeTimingInfo;\n let duration;\n if (typeof start === 'bigint' || typeof end === 'bigint') {\n duration = window$1.BigInt(end) - window$1.BigInt(start);\n } else if (typeof start === 'number' && typeof end === 'number') {\n duration = end - start;\n }\n if (typeof duration !== 'undefined' && duration > maxDuration) {\n maxDuration = duration;\n }\n }); // convert back to a number if it is lower than MAX_SAFE_INTEGER\n // as we only need BigInt when we are above that.\n\n if (typeof maxDuration === 'bigint' && maxDuration < Number.MAX_SAFE_INTEGER) {\n maxDuration = Number(maxDuration);\n }\n return maxDuration;\n};\nconst segmentTooLong = ({\n segmentDuration,\n maxDuration\n}) => {\n // 0 duration segments are most likely due to metadata only segments or a lack of\n // information.\n if (!segmentDuration) {\n return false;\n } // For HLS:\n //\n // https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.3.1\n // The EXTINF duration of each Media Segment in the Playlist\n // file, when rounded to the nearest integer, MUST be less than or equal\n // to the target duration; longer segments can trigger playback stalls\n // or other errors.\n //\n // For DASH, the mpd-parser uses the largest reported segment duration as the target\n // duration. Although that reported duration is occasionally approximate (i.e., not\n // exact), a strict check may report that a segment is too long more often in DASH.\n\n return Math.round(segmentDuration) > maxDuration + TIME_FUDGE_FACTOR;\n};\nconst getTroublesomeSegmentDurationMessage = (segmentInfo, sourceType) => {\n // Right now we aren't following DASH's timing model exactly, so only perform\n // this check for HLS content.\n if (sourceType !== 'hls') {\n return null;\n }\n const segmentDuration = mediaDuration({\n audioTimingInfo: segmentInfo.audioTimingInfo,\n videoTimingInfo: segmentInfo.videoTimingInfo\n }); // Don't report if we lack information.\n //\n // If the segment has a duration of 0 it is either a lack of information or a\n // metadata only segment and shouldn't be reported here.\n\n if (!segmentDuration) {\n return null;\n }\n const targetDuration = segmentInfo.playlist.targetDuration;\n const isSegmentWayTooLong = segmentTooLong({\n segmentDuration,\n maxDuration: targetDuration * 2\n });\n const isSegmentSlightlyTooLong = segmentTooLong({\n segmentDuration,\n maxDuration: targetDuration\n });\n const segmentTooLongMessage = `Segment with index ${segmentInfo.mediaIndex} ` + `from playlist ${segmentInfo.playlist.id} ` + `has a duration of ${segmentDuration} ` + `when the reported duration is ${segmentInfo.duration} ` + `and the target duration is ${targetDuration}. ` + 'For HLS content, a duration in excess of the target duration may result in ' + 'playback issues. See the HLS specification section on EXT-X-TARGETDURATION for ' + 'more details: ' + 'https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.3.1';\n if (isSegmentWayTooLong || isSegmentSlightlyTooLong) {\n return {\n severity: isSegmentWayTooLong ? 'warn' : 'info',\n message: segmentTooLongMessage\n };\n }\n return null;\n};\n/**\n * An object that manages segment loading and appending.\n *\n * @class SegmentLoader\n * @param {Object} options required and optional options\n * @extends videojs.EventTarget\n */\n\nclass SegmentLoader extends videojs.EventTarget {\n constructor(settings, options = {}) {\n super(); // check pre-conditions\n\n if (!settings) {\n throw new TypeError('Initialization settings are required');\n }\n if (typeof settings.currentTime !== 'function') {\n throw new TypeError('No currentTime getter specified');\n }\n if (!settings.mediaSource) {\n throw new TypeError('No MediaSource specified');\n } // public properties\n\n this.bandwidth = settings.bandwidth;\n this.throughput = {\n rate: 0,\n count: 0\n };\n this.roundTrip = NaN;\n this.resetStats_();\n this.mediaIndex = null;\n this.partIndex = null; // private settings\n\n this.hasPlayed_ = settings.hasPlayed;\n this.currentTime_ = settings.currentTime;\n this.seekable_ = settings.seekable;\n this.seeking_ = settings.seeking;\n this.duration_ = settings.duration;\n this.mediaSource_ = settings.mediaSource;\n this.vhs_ = settings.vhs;\n this.loaderType_ = settings.loaderType;\n this.currentMediaInfo_ = void 0;\n this.startingMediaInfo_ = void 0;\n this.segmentMetadataTrack_ = settings.segmentMetadataTrack;\n this.goalBufferLength_ = settings.goalBufferLength;\n this.sourceType_ = settings.sourceType;\n this.sourceUpdater_ = settings.sourceUpdater;\n this.inbandTextTracks_ = settings.inbandTextTracks;\n this.state_ = 'INIT';\n this.timelineChangeController_ = settings.timelineChangeController;\n this.shouldSaveSegmentTimingInfo_ = true;\n this.parse708captions_ = settings.parse708captions;\n this.useDtsForTimestampOffset_ = settings.useDtsForTimestampOffset;\n this.calculateTimestampOffsetForEachSegment_ = settings.calculateTimestampOffsetForEachSegment;\n this.captionServices_ = settings.captionServices;\n this.exactManifestTimings = settings.exactManifestTimings;\n this.addMetadataToTextTrack = settings.addMetadataToTextTrack; // private instance variables\n\n this.checkBufferTimeout_ = null;\n this.error_ = void 0;\n this.currentTimeline_ = -1;\n this.pendingSegment_ = null;\n this.xhrOptions_ = null;\n this.pendingSegments_ = [];\n this.audioDisabled_ = false;\n this.isPendingTimestampOffset_ = false; // TODO possibly move gopBuffer and timeMapping info to a separate controller\n\n this.gopBuffer_ = [];\n this.timeMapping_ = 0;\n this.safeAppend_ = false;\n this.appendInitSegment_ = {\n audio: true,\n video: true\n };\n this.playlistOfLastInitSegment_ = {\n audio: null,\n video: null\n };\n this.callQueue_ = []; // If the segment loader prepares to load a segment, but does not have enough\n // information yet to start the loading process (e.g., if the audio loader wants to\n // load a segment from the next timeline but the main loader hasn't yet crossed that\n // timeline), then the load call will be added to the queue until it is ready to be\n // processed.\n\n this.loadQueue_ = [];\n this.metadataQueue_ = {\n id3: [],\n caption: []\n };\n this.waitingOnRemove_ = false;\n this.quotaExceededErrorRetryTimeout_ = null; // Fragmented mp4 playback\n\n this.activeInitSegmentId_ = null;\n this.initSegments_ = {}; // HLSe playback\n\n this.cacheEncryptionKeys_ = settings.cacheEncryptionKeys;\n this.keyCache_ = {};\n this.decrypter_ = settings.decrypter; // Manages the tracking and generation of sync-points, mappings\n // between a time in the display time and a segment index within\n // a playlist\n\n this.syncController_ = settings.syncController;\n this.syncPoint_ = {\n segmentIndex: 0,\n time: 0\n };\n this.transmuxer_ = this.createTransmuxer_();\n this.triggerSyncInfoUpdate_ = () => this.trigger('syncinfoupdate');\n this.syncController_.on('syncinfoupdate', this.triggerSyncInfoUpdate_);\n this.mediaSource_.addEventListener('sourceopen', () => {\n if (!this.isEndOfStream_()) {\n this.ended_ = false;\n }\n }); // ...for determining the fetch location\n\n this.fetchAtBuffer_ = false; // For comparing with currentTime when overwriting segments on fastQualityChange_ changes. Use -1 as the inactive flag.\n\n this.replaceSegmentsUntil_ = -1;\n this.logger_ = logger(`SegmentLoader[${this.loaderType_}]`);\n Object.defineProperty(this, 'state', {\n get() {\n return this.state_;\n },\n set(newState) {\n if (newState !== this.state_) {\n this.logger_(`${this.state_} -> ${newState}`);\n this.state_ = newState;\n this.trigger('statechange');\n }\n }\n });\n this.sourceUpdater_.on('ready', () => {\n if (this.hasEnoughInfoToAppend_()) {\n this.processCallQueue_();\n }\n }); // Only the main loader needs to listen for pending timeline changes, as the main\n // loader should wait for audio to be ready to change its timeline so that both main\n // and audio timelines change together. For more details, see the\n // shouldWaitForTimelineChange function.\n\n if (this.loaderType_ === 'main') {\n this.timelineChangeController_.on('pendingtimelinechange', () => {\n if (this.hasEnoughInfoToAppend_()) {\n this.processCallQueue_();\n }\n });\n } // The main loader only listens on pending timeline changes, but the audio loader,\n // since its loads follow main, needs to listen on timeline changes. For more details,\n // see the shouldWaitForTimelineChange function.\n\n if (this.loaderType_ === 'audio') {\n this.timelineChangeController_.on('timelinechange', () => {\n if (this.hasEnoughInfoToLoad_()) {\n this.processLoadQueue_();\n }\n if (this.hasEnoughInfoToAppend_()) {\n this.processCallQueue_();\n }\n });\n }\n }\n createTransmuxer_() {\n return segmentTransmuxer.createTransmuxer({\n remux: false,\n alignGopsAtEnd: this.safeAppend_,\n keepOriginalTimestamps: true,\n parse708captions: this.parse708captions_,\n captionServices: this.captionServices_\n });\n }\n /**\n * reset all of our media stats\n *\n * @private\n */\n\n resetStats_() {\n this.mediaBytesTransferred = 0;\n this.mediaRequests = 0;\n this.mediaRequestsAborted = 0;\n this.mediaRequestsTimedout = 0;\n this.mediaRequestsErrored = 0;\n this.mediaTransferDuration = 0;\n this.mediaSecondsLoaded = 0;\n this.mediaAppends = 0;\n }\n /**\n * dispose of the SegmentLoader and reset to the default state\n */\n\n dispose() {\n this.trigger('dispose');\n this.state = 'DISPOSED';\n this.pause();\n this.abort_();\n if (this.transmuxer_) {\n this.transmuxer_.terminate();\n }\n this.resetStats_();\n if (this.checkBufferTimeout_) {\n window$1.clearTimeout(this.checkBufferTimeout_);\n }\n if (this.syncController_ && this.triggerSyncInfoUpdate_) {\n this.syncController_.off('syncinfoupdate', this.triggerSyncInfoUpdate_);\n }\n this.off();\n }\n setAudio(enable) {\n this.audioDisabled_ = !enable;\n if (enable) {\n this.appendInitSegment_.audio = true;\n } else {\n // remove current track audio if it gets disabled\n this.sourceUpdater_.removeAudio(0, this.duration_());\n }\n }\n /**\n * abort anything that is currently doing on with the SegmentLoader\n * and reset to a default state\n */\n\n abort() {\n if (this.state !== 'WAITING') {\n if (this.pendingSegment_) {\n this.pendingSegment_ = null;\n }\n return;\n }\n this.abort_(); // We aborted the requests we were waiting on, so reset the loader's state to READY\n // since we are no longer \"waiting\" on any requests. XHR callback is not always run\n // when the request is aborted. This will prevent the loader from being stuck in the\n // WAITING state indefinitely.\n\n this.state = 'READY'; // don't wait for buffer check timeouts to begin fetching the\n // next segment\n\n if (!this.paused()) {\n this.monitorBuffer_();\n }\n }\n /**\n * abort all pending xhr requests and null any pending segements\n *\n * @private\n */\n\n abort_() {\n if (this.pendingSegment_ && this.pendingSegment_.abortRequests) {\n this.pendingSegment_.abortRequests();\n } // clear out the segment being processed\n\n this.pendingSegment_ = null;\n this.callQueue_ = [];\n this.loadQueue_ = [];\n this.metadataQueue_.id3 = [];\n this.metadataQueue_.caption = [];\n this.timelineChangeController_.clearPendingTimelineChange(this.loaderType_);\n this.waitingOnRemove_ = false;\n window$1.clearTimeout(this.quotaExceededErrorRetryTimeout_);\n this.quotaExceededErrorRetryTimeout_ = null;\n }\n checkForAbort_(requestId) {\n // If the state is APPENDING, then aborts will not modify the state, meaning the first\n // callback that happens should reset the state to READY so that loading can continue.\n if (this.state === 'APPENDING' && !this.pendingSegment_) {\n this.state = 'READY';\n return true;\n }\n if (!this.pendingSegment_ || this.pendingSegment_.requestId !== requestId) {\n return true;\n }\n return false;\n }\n /**\n * set an error on the segment loader and null out any pending segements\n *\n * @param {Error} error the error to set on the SegmentLoader\n * @return {Error} the error that was set or that is currently set\n */\n\n error(error) {\n if (typeof error !== 'undefined') {\n this.logger_('error occurred:', error);\n this.error_ = error;\n }\n this.pendingSegment_ = null;\n return this.error_;\n }\n endOfStream() {\n this.ended_ = true;\n if (this.transmuxer_) {\n // need to clear out any cached data to prepare for the new segment\n segmentTransmuxer.reset(this.transmuxer_);\n }\n this.gopBuffer_.length = 0;\n this.pause();\n this.trigger('ended');\n }\n /**\n * Indicates which time ranges are buffered\n *\n * @return {TimeRange}\n * TimeRange object representing the current buffered ranges\n */\n\n buffered_() {\n const trackInfo = this.getMediaInfo_();\n if (!this.sourceUpdater_ || !trackInfo) {\n return createTimeRanges();\n }\n if (this.loaderType_ === 'main') {\n const {\n hasAudio,\n hasVideo,\n isMuxed\n } = trackInfo;\n if (hasVideo && hasAudio && !this.audioDisabled_ && !isMuxed) {\n return this.sourceUpdater_.buffered();\n }\n if (hasVideo) {\n return this.sourceUpdater_.videoBuffered();\n }\n } // One case that can be ignored for now is audio only with alt audio,\n // as we don't yet have proper support for that.\n\n return this.sourceUpdater_.audioBuffered();\n }\n /**\n * Gets and sets init segment for the provided map\n *\n * @param {Object} map\n * The map object representing the init segment to get or set\n * @param {boolean=} set\n * If true, the init segment for the provided map should be saved\n * @return {Object}\n * map object for desired init segment\n */\n\n initSegmentForMap(map, set = false) {\n if (!map) {\n return null;\n }\n const id = initSegmentId(map);\n let storedMap = this.initSegments_[id];\n if (set && !storedMap && map.bytes) {\n this.initSegments_[id] = storedMap = {\n resolvedUri: map.resolvedUri,\n byterange: map.byterange,\n bytes: map.bytes,\n tracks: map.tracks,\n timescales: map.timescales\n };\n }\n return storedMap || map;\n }\n /**\n * Gets and sets key for the provided key\n *\n * @param {Object} key\n * The key object representing the key to get or set\n * @param {boolean=} set\n * If true, the key for the provided key should be saved\n * @return {Object}\n * Key object for desired key\n */\n\n segmentKey(key, set = false) {\n if (!key) {\n return null;\n }\n const id = segmentKeyId(key);\n let storedKey = this.keyCache_[id]; // TODO: We should use the HTTP Expires header to invalidate our cache per\n // https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-6.2.3\n\n if (this.cacheEncryptionKeys_ && set && !storedKey && key.bytes) {\n this.keyCache_[id] = storedKey = {\n resolvedUri: key.resolvedUri,\n bytes: key.bytes\n };\n }\n const result = {\n resolvedUri: (storedKey || key).resolvedUri\n };\n if (storedKey) {\n result.bytes = storedKey.bytes;\n }\n return result;\n }\n /**\n * Returns true if all configuration required for loading is present, otherwise false.\n *\n * @return {boolean} True if the all configuration is ready for loading\n * @private\n */\n\n couldBeginLoading_() {\n return this.playlist_ && !this.paused();\n }\n /**\n * load a playlist and start to fill the buffer\n */\n\n load() {\n // un-pause\n this.monitorBuffer_(); // if we don't have a playlist yet, keep waiting for one to be\n // specified\n\n if (!this.playlist_) {\n return;\n } // if all the configuration is ready, initialize and begin loading\n\n if (this.state === 'INIT' && this.couldBeginLoading_()) {\n return this.init_();\n } // if we're in the middle of processing a segment already, don't\n // kick off an additional segment request\n\n if (!this.couldBeginLoading_() || this.state !== 'READY' && this.state !== 'INIT') {\n return;\n }\n this.state = 'READY';\n }\n /**\n * Once all the starting parameters have been specified, begin\n * operation. This method should only be invoked from the INIT\n * state.\n *\n * @private\n */\n\n init_() {\n this.state = 'READY'; // if this is the audio segment loader, and it hasn't been inited before, then any old\n // audio data from the muxed content should be removed\n\n this.resetEverything();\n return this.monitorBuffer_();\n }\n /**\n * set a playlist on the segment loader\n *\n * @param {PlaylistLoader} media the playlist to set on the segment loader\n */\n\n playlist(newPlaylist, options = {}) {\n if (!newPlaylist) {\n return;\n }\n const oldPlaylist = this.playlist_;\n const segmentInfo = this.pendingSegment_;\n this.playlist_ = newPlaylist;\n this.xhrOptions_ = options; // when we haven't started playing yet, the start of a live playlist\n // is always our zero-time so force a sync update each time the playlist\n // is refreshed from the server\n //\n // Use the INIT state to determine if playback has started, as the playlist sync info\n // should be fixed once requests begin (as sync points are generated based on sync\n // info), but not before then.\n\n if (this.state === 'INIT') {\n newPlaylist.syncInfo = {\n mediaSequence: newPlaylist.mediaSequence,\n time: 0\n }; // Setting the date time mapping means mapping the program date time (if available)\n // to time 0 on the player's timeline. The playlist's syncInfo serves a similar\n // purpose, mapping the initial mediaSequence to time zero. Since the syncInfo can\n // be updated as the playlist is refreshed before the loader starts loading, the\n // program date time mapping needs to be updated as well.\n //\n // This mapping is only done for the main loader because a program date time should\n // map equivalently between playlists.\n\n if (this.loaderType_ === 'main') {\n this.syncController_.setDateTimeMappingForStart(newPlaylist);\n }\n }\n let oldId = null;\n if (oldPlaylist) {\n if (oldPlaylist.id) {\n oldId = oldPlaylist.id;\n } else if (oldPlaylist.uri) {\n oldId = oldPlaylist.uri;\n }\n }\n this.logger_(`playlist update [${oldId} => ${newPlaylist.id || newPlaylist.uri}]`); // in VOD, this is always a rendition switch (or we updated our syncInfo above)\n // in LIVE, we always want to update with new playlists (including refreshes)\n\n this.trigger('syncinfoupdate'); // if we were unpaused but waiting for a playlist, start\n // buffering now\n\n if (this.state === 'INIT' && this.couldBeginLoading_()) {\n return this.init_();\n }\n if (!oldPlaylist || oldPlaylist.uri !== newPlaylist.uri) {\n if (this.mediaIndex !== null) {\n // we must reset/resync the segment loader when we switch renditions and\n // the segment loader is already synced to the previous rendition\n // We only want to reset the loader here for LLHLS playback, as resetLoader sets fetchAtBuffer_\n // to false, resulting in fetching segments at currentTime and causing repeated\n // same-segment requests on playlist change. This erroneously drives up the playback watcher\n // stalled segment count, as re-requesting segments at the currentTime or browser cached segments\n // will not change the buffer.\n // Reference for LLHLS fixes: https://github.com/videojs/http-streaming/pull/1201\n const isLLHLS = !newPlaylist.endList && typeof newPlaylist.partTargetDuration === 'number';\n if (isLLHLS) {\n this.resetLoader();\n } else {\n this.resyncLoader();\n }\n }\n this.currentMediaInfo_ = void 0;\n this.trigger('playlistupdate'); // the rest of this function depends on `oldPlaylist` being defined\n\n return;\n } // we reloaded the same playlist so we are in a live scenario\n // and we will likely need to adjust the mediaIndex\n\n const mediaSequenceDiff = newPlaylist.mediaSequence - oldPlaylist.mediaSequence;\n this.logger_(`live window shift [${mediaSequenceDiff}]`); // update the mediaIndex on the SegmentLoader\n // this is important because we can abort a request and this value must be\n // equal to the last appended mediaIndex\n\n if (this.mediaIndex !== null) {\n this.mediaIndex -= mediaSequenceDiff; // this can happen if we are going to load the first segment, but get a playlist\n // update during that. mediaIndex would go from 0 to -1 if mediaSequence in the\n // new playlist was incremented by 1.\n\n if (this.mediaIndex < 0) {\n this.mediaIndex = null;\n this.partIndex = null;\n } else {\n const segment = this.playlist_.segments[this.mediaIndex]; // partIndex should remain the same for the same segment\n // unless parts fell off of the playlist for this segment.\n // In that case we need to reset partIndex and resync\n\n if (this.partIndex && (!segment.parts || !segment.parts.length || !segment.parts[this.partIndex])) {\n const mediaIndex = this.mediaIndex;\n this.logger_(`currently processing part (index ${this.partIndex}) no longer exists.`);\n this.resetLoader(); // We want to throw away the partIndex and the data associated with it,\n // as the part was dropped from our current playlists segment.\n // The mediaIndex will still be valid so keep that around.\n\n this.mediaIndex = mediaIndex;\n }\n }\n } // update the mediaIndex on the SegmentInfo object\n // this is important because we will update this.mediaIndex with this value\n // in `handleAppendsDone_` after the segment has been successfully appended\n\n if (segmentInfo) {\n segmentInfo.mediaIndex -= mediaSequenceDiff;\n if (segmentInfo.mediaIndex < 0) {\n segmentInfo.mediaIndex = null;\n segmentInfo.partIndex = null;\n } else {\n // we need to update the referenced segment so that timing information is\n // saved for the new playlist's segment, however, if the segment fell off the\n // playlist, we can leave the old reference and just lose the timing info\n if (segmentInfo.mediaIndex >= 0) {\n segmentInfo.segment = newPlaylist.segments[segmentInfo.mediaIndex];\n }\n if (segmentInfo.partIndex >= 0 && segmentInfo.segment.parts) {\n segmentInfo.part = segmentInfo.segment.parts[segmentInfo.partIndex];\n }\n }\n }\n this.syncController_.saveExpiredSegmentInfo(oldPlaylist, newPlaylist);\n }\n /**\n * Prevent the loader from fetching additional segments. If there\n * is a segment request outstanding, it will finish processing\n * before the loader halts. A segment loader can be unpaused by\n * calling load().\n */\n\n pause() {\n if (this.checkBufferTimeout_) {\n window$1.clearTimeout(this.checkBufferTimeout_);\n this.checkBufferTimeout_ = null;\n }\n }\n /**\n * Returns whether the segment loader is fetching additional\n * segments when given the opportunity. This property can be\n * modified through calls to pause() and load().\n */\n\n paused() {\n return this.checkBufferTimeout_ === null;\n }\n /**\n * Resets the segment loader ended and init properties.\n */\n\n resetLoaderProperties() {\n this.ended_ = false;\n this.activeInitSegmentId_ = null;\n this.appendInitSegment_ = {\n audio: true,\n video: true\n };\n }\n /**\n * Delete all the buffered data and reset the SegmentLoader\n *\n * @param {Function} [done] an optional callback to be executed when the remove\n * operation is complete\n */\n\n resetEverything(done) {\n this.resetLoaderProperties();\n this.resetLoader(); // remove from 0, the earliest point, to Infinity, to signify removal of everything.\n // VTT Segment Loader doesn't need to do anything but in the regular SegmentLoader,\n // we then clamp the value to duration if necessary.\n\n this.remove(0, Infinity, done); // clears fmp4 captions\n\n if (this.transmuxer_) {\n this.transmuxer_.postMessage({\n action: 'clearAllMp4Captions'\n }); // reset the cache in the transmuxer\n\n this.transmuxer_.postMessage({\n action: 'reset'\n });\n }\n }\n /**\n * Force the SegmentLoader to resync and start loading around the currentTime instead\n * of starting at the end of the buffer\n *\n * Useful for fast quality changes\n */\n\n resetLoader() {\n this.fetchAtBuffer_ = false;\n this.resyncLoader();\n }\n /**\n * Force the SegmentLoader to restart synchronization and make a conservative guess\n * before returning to the simple walk-forward method\n */\n\n resyncLoader() {\n if (this.transmuxer_) {\n // need to clear out any cached data to prepare for the new segment\n segmentTransmuxer.reset(this.transmuxer_);\n }\n this.mediaIndex = null;\n this.partIndex = null;\n this.syncPoint_ = null;\n this.isPendingTimestampOffset_ = false;\n this.callQueue_ = [];\n this.loadQueue_ = [];\n this.metadataQueue_.id3 = [];\n this.metadataQueue_.caption = [];\n this.abort();\n if (this.transmuxer_) {\n this.transmuxer_.postMessage({\n action: 'clearParsedMp4Captions'\n });\n }\n }\n /**\n * Remove any data in the source buffer between start and end times\n *\n * @param {number} start - the start time of the region to remove from the buffer\n * @param {number} end - the end time of the region to remove from the buffer\n * @param {Function} [done] - an optional callback to be executed when the remove\n * @param {boolean} force - force all remove operations to happen\n * operation is complete\n */\n\n remove(start, end, done = () => {}, force = false) {\n // clamp end to duration if we need to remove everything.\n // This is due to a browser bug that causes issues if we remove to Infinity.\n // videojs/videojs-contrib-hls#1225\n if (end === Infinity) {\n end = this.duration_();\n } // skip removes that would throw an error\n // commonly happens during a rendition switch at the start of a video\n // from start 0 to end 0\n\n if (end <= start) {\n this.logger_('skipping remove because end ${end} is <= start ${start}');\n return;\n }\n if (!this.sourceUpdater_ || !this.getMediaInfo_()) {\n this.logger_('skipping remove because no source updater or starting media info'); // nothing to remove if we haven't processed any media\n\n return;\n } // set it to one to complete this function's removes\n\n let removesRemaining = 1;\n const removeFinished = () => {\n removesRemaining--;\n if (removesRemaining === 0) {\n done();\n }\n };\n if (force || !this.audioDisabled_) {\n removesRemaining++;\n this.sourceUpdater_.removeAudio(start, end, removeFinished);\n } // While it would be better to only remove video if the main loader has video, this\n // should be safe with audio only as removeVideo will call back even if there's no\n // video buffer.\n //\n // In theory we can check to see if there's video before calling the remove, but in\n // the event that we're switching between renditions and from video to audio only\n // (when we add support for that), we may need to clear the video contents despite\n // what the new media will contain.\n\n if (force || this.loaderType_ === 'main') {\n this.gopBuffer_ = removeGopBuffer(this.gopBuffer_, start, end, this.timeMapping_);\n removesRemaining++;\n this.sourceUpdater_.removeVideo(start, end, removeFinished);\n } // remove any captions and ID3 tags\n\n for (const track in this.inbandTextTracks_) {\n removeCuesFromTrack(start, end, this.inbandTextTracks_[track]);\n }\n removeCuesFromTrack(start, end, this.segmentMetadataTrack_); // finished this function's removes\n\n removeFinished();\n }\n /**\n * (re-)schedule monitorBufferTick_ to run as soon as possible\n *\n * @private\n */\n\n monitorBuffer_() {\n if (this.checkBufferTimeout_) {\n window$1.clearTimeout(this.checkBufferTimeout_);\n }\n this.checkBufferTimeout_ = window$1.setTimeout(this.monitorBufferTick_.bind(this), 1);\n }\n /**\n * As long as the SegmentLoader is in the READY state, periodically\n * invoke fillBuffer_().\n *\n * @private\n */\n\n monitorBufferTick_() {\n if (this.state === 'READY') {\n this.fillBuffer_();\n }\n if (this.checkBufferTimeout_) {\n window$1.clearTimeout(this.checkBufferTimeout_);\n }\n this.checkBufferTimeout_ = window$1.setTimeout(this.monitorBufferTick_.bind(this), CHECK_BUFFER_DELAY);\n }\n /**\n * fill the buffer with segements unless the sourceBuffers are\n * currently updating\n *\n * Note: this function should only ever be called by monitorBuffer_\n * and never directly\n *\n * @private\n */\n\n fillBuffer_() {\n // TODO since the source buffer maintains a queue, and we shouldn't call this function\n // except when we're ready for the next segment, this check can most likely be removed\n if (this.sourceUpdater_.updating()) {\n return;\n } // see if we need to begin loading immediately\n\n const segmentInfo = this.chooseNextRequest_();\n if (!segmentInfo) {\n return;\n }\n if (typeof segmentInfo.timestampOffset === 'number') {\n this.isPendingTimestampOffset_ = false;\n this.timelineChangeController_.pendingTimelineChange({\n type: this.loaderType_,\n from: this.currentTimeline_,\n to: segmentInfo.timeline\n });\n }\n this.loadSegment_(segmentInfo);\n }\n /**\n * Determines if we should call endOfStream on the media source based\n * on the state of the buffer or if appened segment was the final\n * segment in the playlist.\n *\n * @param {number} [mediaIndex] the media index of segment we last appended\n * @param {Object} [playlist] a media playlist object\n * @return {boolean} do we need to call endOfStream on the MediaSource\n */\n\n isEndOfStream_(mediaIndex = this.mediaIndex, playlist = this.playlist_, partIndex = this.partIndex) {\n if (!playlist || !this.mediaSource_) {\n return false;\n }\n const segment = typeof mediaIndex === 'number' && playlist.segments[mediaIndex]; // mediaIndex is zero based but length is 1 based\n\n const appendedLastSegment = mediaIndex + 1 === playlist.segments.length; // true if there are no parts, or this is the last part.\n\n const appendedLastPart = !segment || !segment.parts || partIndex + 1 === segment.parts.length; // if we've buffered to the end of the video, we need to call endOfStream\n // so that MediaSources can trigger the `ended` event when it runs out of\n // buffered data instead of waiting for me\n\n return playlist.endList && this.mediaSource_.readyState === 'open' && appendedLastSegment && appendedLastPart;\n }\n /**\n * Determines what request should be made given current segment loader state.\n *\n * @return {Object} a request object that describes the segment/part to load\n */\n\n chooseNextRequest_() {\n const buffered = this.buffered_();\n const bufferedEnd = lastBufferedEnd(buffered) || 0;\n const bufferedTime = timeAheadOf(buffered, this.currentTime_());\n const preloaded = !this.hasPlayed_() && bufferedTime >= 1;\n const haveEnoughBuffer = bufferedTime >= this.goalBufferLength_();\n const segments = this.playlist_.segments; // return no segment if:\n // 1. we don't have segments\n // 2. The video has not yet played and we already downloaded a segment\n // 3. we already have enough buffered time\n\n if (!segments.length || preloaded || haveEnoughBuffer) {\n return null;\n }\n this.syncPoint_ = this.syncPoint_ || this.syncController_.getSyncPoint(this.playlist_, this.duration_(), this.currentTimeline_, this.currentTime_());\n const next = {\n partIndex: null,\n mediaIndex: null,\n startOfSegment: null,\n playlist: this.playlist_,\n isSyncRequest: Boolean(!this.syncPoint_)\n };\n if (next.isSyncRequest) {\n next.mediaIndex = getSyncSegmentCandidate(this.currentTimeline_, segments, bufferedEnd);\n } else if (this.mediaIndex !== null) {\n const segment = segments[this.mediaIndex];\n const partIndex = typeof this.partIndex === 'number' ? this.partIndex : -1;\n next.startOfSegment = segment.end ? segment.end : bufferedEnd;\n if (segment.parts && segment.parts[partIndex + 1]) {\n next.mediaIndex = this.mediaIndex;\n next.partIndex = partIndex + 1;\n } else {\n next.mediaIndex = this.mediaIndex + 1;\n }\n } else {\n // Find the segment containing the end of the buffer or current time.\n const {\n segmentIndex,\n startTime,\n partIndex\n } = Playlist.getMediaInfoForTime({\n exactManifestTimings: this.exactManifestTimings,\n playlist: this.playlist_,\n currentTime: this.fetchAtBuffer_ ? bufferedEnd : this.currentTime_(),\n startingPartIndex: this.syncPoint_.partIndex,\n startingSegmentIndex: this.syncPoint_.segmentIndex,\n startTime: this.syncPoint_.time\n });\n next.getMediaInfoForTime = this.fetchAtBuffer_ ? `bufferedEnd ${bufferedEnd}` : `currentTime ${this.currentTime_()}`;\n next.mediaIndex = segmentIndex;\n next.startOfSegment = startTime;\n next.partIndex = partIndex;\n }\n const nextSegment = segments[next.mediaIndex];\n let nextPart = nextSegment && typeof next.partIndex === 'number' && nextSegment.parts && nextSegment.parts[next.partIndex]; // if the next segment index is invalid or\n // the next partIndex is invalid do not choose a next segment.\n\n if (!nextSegment || typeof next.partIndex === 'number' && !nextPart) {\n return null;\n } // if the next segment has parts, and we don't have a partIndex.\n // Set partIndex to 0\n\n if (typeof next.partIndex !== 'number' && nextSegment.parts) {\n next.partIndex = 0;\n nextPart = nextSegment.parts[0];\n } // independentSegments applies to every segment in a playlist. If independentSegments appears in a main playlist,\n // it applies to each segment in each media playlist.\n // https://datatracker.ietf.org/doc/html/draft-pantos-http-live-streaming-23#section-4.3.5.1\n\n const hasIndependentSegments = this.vhs_.playlists && this.vhs_.playlists.main && this.vhs_.playlists.main.independentSegments || this.playlist_.independentSegments; // if we have no buffered data then we need to make sure\n // that the next part we append is \"independent\" if possible.\n // So we check if the previous part is independent, and request\n // it if it is.\n\n if (!bufferedTime && nextPart && !hasIndependentSegments && !nextPart.independent) {\n if (next.partIndex === 0) {\n const lastSegment = segments[next.mediaIndex - 1];\n const lastSegmentLastPart = lastSegment.parts && lastSegment.parts.length && lastSegment.parts[lastSegment.parts.length - 1];\n if (lastSegmentLastPart && lastSegmentLastPart.independent) {\n next.mediaIndex -= 1;\n next.partIndex = lastSegment.parts.length - 1;\n next.independent = 'previous segment';\n }\n } else if (nextSegment.parts[next.partIndex - 1].independent) {\n next.partIndex -= 1;\n next.independent = 'previous part';\n }\n }\n const ended = this.mediaSource_ && this.mediaSource_.readyState === 'ended'; // do not choose a next segment if all of the following:\n // 1. this is the last segment in the playlist\n // 2. end of stream has been called on the media source already\n // 3. the player is not seeking\n\n if (next.mediaIndex >= segments.length - 1 && ended && !this.seeking_()) {\n return null;\n }\n return this.generateSegmentInfo_(next);\n }\n generateSegmentInfo_(options) {\n const {\n independent,\n playlist,\n mediaIndex,\n startOfSegment,\n isSyncRequest,\n partIndex,\n forceTimestampOffset,\n getMediaInfoForTime\n } = options;\n const segment = playlist.segments[mediaIndex];\n const part = typeof partIndex === 'number' && segment.parts[partIndex];\n const segmentInfo = {\n requestId: 'segment-loader-' + Math.random(),\n // resolve the segment URL relative to the playlist\n uri: part && part.resolvedUri || segment.resolvedUri,\n // the segment's mediaIndex at the time it was requested\n mediaIndex,\n partIndex: part ? partIndex : null,\n // whether or not to update the SegmentLoader's state with this\n // segment's mediaIndex\n isSyncRequest,\n startOfSegment,\n // the segment's playlist\n playlist,\n // unencrypted bytes of the segment\n bytes: null,\n // when a key is defined for this segment, the encrypted bytes\n encryptedBytes: null,\n // The target timestampOffset for this segment when we append it\n // to the source buffer\n timestampOffset: null,\n // The timeline that the segment is in\n timeline: segment.timeline,\n // The expected duration of the segment in seconds\n duration: part && part.duration || segment.duration,\n // retain the segment in case the playlist updates while doing an async process\n segment,\n part,\n byteLength: 0,\n transmuxer: this.transmuxer_,\n // type of getMediaInfoForTime that was used to get this segment\n getMediaInfoForTime,\n independent\n };\n const overrideCheck = typeof forceTimestampOffset !== 'undefined' ? forceTimestampOffset : this.isPendingTimestampOffset_;\n segmentInfo.timestampOffset = this.timestampOffsetForSegment_({\n segmentTimeline: segment.timeline,\n currentTimeline: this.currentTimeline_,\n startOfSegment,\n buffered: this.buffered_(),\n calculateTimestampOffsetForEachSegment: this.calculateTimestampOffsetForEachSegment_,\n overrideCheck\n });\n const audioBufferedEnd = lastBufferedEnd(this.sourceUpdater_.audioBuffered());\n if (typeof audioBufferedEnd === 'number') {\n // since the transmuxer is using the actual timing values, but the buffer is\n // adjusted by the timestamp offset, we must adjust the value here\n segmentInfo.audioAppendStart = audioBufferedEnd - this.sourceUpdater_.audioTimestampOffset();\n }\n if (this.sourceUpdater_.videoBuffered().length) {\n segmentInfo.gopsToAlignWith = gopsSafeToAlignWith(this.gopBuffer_,\n // since the transmuxer is using the actual timing values, but the time is\n // adjusted by the timestmap offset, we must adjust the value here\n this.currentTime_() - this.sourceUpdater_.videoTimestampOffset(), this.timeMapping_);\n }\n return segmentInfo;\n } // get the timestampoffset for a segment,\n // added so that vtt segment loader can override and prevent\n // adding timestamp offsets.\n\n timestampOffsetForSegment_(options) {\n return timestampOffsetForSegment(options);\n }\n /**\n * Determines if the network has enough bandwidth to complete the current segment\n * request in a timely manner. If not, the request will be aborted early and bandwidth\n * updated to trigger a playlist switch.\n *\n * @param {Object} stats\n * Object containing stats about the request timing and size\n * @private\n */\n\n earlyAbortWhenNeeded_(stats) {\n if (this.vhs_.tech_.paused() ||\n // Don't abort if the current playlist is on the lowestEnabledRendition\n // TODO: Replace using timeout with a boolean indicating whether this playlist is\n // the lowestEnabledRendition.\n !this.xhrOptions_.timeout ||\n // Don't abort if we have no bandwidth information to estimate segment sizes\n !this.playlist_.attributes.BANDWIDTH) {\n return;\n } // Wait at least 1 second since the first byte of data has been received before\n // using the calculated bandwidth from the progress event to allow the bitrate\n // to stabilize\n\n if (Date.now() - (stats.firstBytesReceivedAt || Date.now()) < 1000) {\n return;\n }\n const currentTime = this.currentTime_();\n const measuredBandwidth = stats.bandwidth;\n const segmentDuration = this.pendingSegment_.duration;\n const requestTimeRemaining = Playlist.estimateSegmentRequestTime(segmentDuration, measuredBandwidth, this.playlist_, stats.bytesReceived); // Subtract 1 from the timeUntilRebuffer so we still consider an early abort\n // if we are only left with less than 1 second when the request completes.\n // A negative timeUntilRebuffering indicates we are already rebuffering\n\n const timeUntilRebuffer$1 = timeUntilRebuffer(this.buffered_(), currentTime, this.vhs_.tech_.playbackRate()) - 1; // Only consider aborting early if the estimated time to finish the download\n // is larger than the estimated time until the player runs out of forward buffer\n\n if (requestTimeRemaining <= timeUntilRebuffer$1) {\n return;\n }\n const switchCandidate = minRebufferMaxBandwidthSelector({\n main: this.vhs_.playlists.main,\n currentTime,\n bandwidth: measuredBandwidth,\n duration: this.duration_(),\n segmentDuration,\n timeUntilRebuffer: timeUntilRebuffer$1,\n currentTimeline: this.currentTimeline_,\n syncController: this.syncController_\n });\n if (!switchCandidate) {\n return;\n }\n const rebufferingImpact = requestTimeRemaining - timeUntilRebuffer$1;\n const timeSavedBySwitching = rebufferingImpact - switchCandidate.rebufferingImpact;\n let minimumTimeSaving = 0.5; // If we are already rebuffering, increase the amount of variance we add to the\n // potential round trip time of the new request so that we are not too aggressive\n // with switching to a playlist that might save us a fraction of a second.\n\n if (timeUntilRebuffer$1 <= TIME_FUDGE_FACTOR) {\n minimumTimeSaving = 1;\n }\n if (!switchCandidate.playlist || switchCandidate.playlist.uri === this.playlist_.uri || timeSavedBySwitching < minimumTimeSaving) {\n return;\n } // set the bandwidth to that of the desired playlist being sure to scale by\n // BANDWIDTH_VARIANCE and add one so the playlist selector does not exclude it\n // don't trigger a bandwidthupdate as the bandwidth is artifial\n\n this.bandwidth = switchCandidate.playlist.attributes.BANDWIDTH * Config.BANDWIDTH_VARIANCE + 1;\n this.trigger('earlyabort');\n }\n handleAbort_(segmentInfo) {\n this.logger_(`Aborting ${segmentInfoString(segmentInfo)}`);\n this.mediaRequestsAborted += 1;\n }\n /**\n * XHR `progress` event handler\n *\n * @param {Event}\n * The XHR `progress` event\n * @param {Object} simpleSegment\n * A simplified segment object copy\n * @private\n */\n\n handleProgress_(event, simpleSegment) {\n this.earlyAbortWhenNeeded_(simpleSegment.stats);\n if (this.checkForAbort_(simpleSegment.requestId)) {\n return;\n }\n this.trigger('progress');\n }\n handleTrackInfo_(simpleSegment, trackInfo) {\n this.earlyAbortWhenNeeded_(simpleSegment.stats);\n if (this.checkForAbort_(simpleSegment.requestId)) {\n return;\n }\n if (this.checkForIllegalMediaSwitch(trackInfo)) {\n return;\n }\n trackInfo = trackInfo || {}; // When we have track info, determine what media types this loader is dealing with.\n // Guard against cases where we're not getting track info at all until we are\n // certain that all streams will provide it.\n\n if (!shallowEqual(this.currentMediaInfo_, trackInfo)) {\n this.appendInitSegment_ = {\n audio: true,\n video: true\n };\n this.startingMediaInfo_ = trackInfo;\n this.currentMediaInfo_ = trackInfo;\n this.logger_('trackinfo update', trackInfo);\n this.trigger('trackinfo');\n } // trackinfo may cause an abort if the trackinfo\n // causes a codec change to an unsupported codec.\n\n if (this.checkForAbort_(simpleSegment.requestId)) {\n return;\n } // set trackinfo on the pending segment so that\n // it can append.\n\n this.pendingSegment_.trackInfo = trackInfo; // check if any calls were waiting on the track info\n\n if (this.hasEnoughInfoToAppend_()) {\n this.processCallQueue_();\n }\n }\n handleTimingInfo_(simpleSegment, mediaType, timeType, time) {\n this.earlyAbortWhenNeeded_(simpleSegment.stats);\n if (this.checkForAbort_(simpleSegment.requestId)) {\n return;\n }\n const segmentInfo = this.pendingSegment_;\n const timingInfoProperty = timingInfoPropertyForMedia(mediaType);\n segmentInfo[timingInfoProperty] = segmentInfo[timingInfoProperty] || {};\n segmentInfo[timingInfoProperty][timeType] = time;\n this.logger_(`timinginfo: ${mediaType} - ${timeType} - ${time}`); // check if any calls were waiting on the timing info\n\n if (this.hasEnoughInfoToAppend_()) {\n this.processCallQueue_();\n }\n }\n handleCaptions_(simpleSegment, captionData) {\n this.earlyAbortWhenNeeded_(simpleSegment.stats);\n if (this.checkForAbort_(simpleSegment.requestId)) {\n return;\n } // This could only happen with fmp4 segments, but\n // should still not happen in general\n\n if (captionData.length === 0) {\n this.logger_('SegmentLoader received no captions from a caption event');\n return;\n }\n const segmentInfo = this.pendingSegment_; // Wait until we have some video data so that caption timing\n // can be adjusted by the timestamp offset\n\n if (!segmentInfo.hasAppendedData_) {\n this.metadataQueue_.caption.push(this.handleCaptions_.bind(this, simpleSegment, captionData));\n return;\n }\n const timestampOffset = this.sourceUpdater_.videoTimestampOffset() === null ? this.sourceUpdater_.audioTimestampOffset() : this.sourceUpdater_.videoTimestampOffset();\n const captionTracks = {}; // get total start/end and captions for each track/stream\n\n captionData.forEach(caption => {\n // caption.stream is actually a track name...\n // set to the existing values in tracks or default values\n captionTracks[caption.stream] = captionTracks[caption.stream] || {\n // Infinity, as any other value will be less than this\n startTime: Infinity,\n captions: [],\n // 0 as an other value will be more than this\n endTime: 0\n };\n const captionTrack = captionTracks[caption.stream];\n captionTrack.startTime = Math.min(captionTrack.startTime, caption.startTime + timestampOffset);\n captionTrack.endTime = Math.max(captionTrack.endTime, caption.endTime + timestampOffset);\n captionTrack.captions.push(caption);\n });\n Object.keys(captionTracks).forEach(trackName => {\n const {\n startTime,\n endTime,\n captions\n } = captionTracks[trackName];\n const inbandTextTracks = this.inbandTextTracks_;\n this.logger_(`adding cues from ${startTime} -> ${endTime} for ${trackName}`);\n createCaptionsTrackIfNotExists(inbandTextTracks, this.vhs_.tech_, trackName); // clear out any cues that start and end at the same time period for the same track.\n // We do this because a rendition change that also changes the timescale for captions\n // will result in captions being re-parsed for certain segments. If we add them again\n // without clearing we will have two of the same captions visible.\n\n removeCuesFromTrack(startTime, endTime, inbandTextTracks[trackName]);\n addCaptionData({\n captionArray: captions,\n inbandTextTracks,\n timestampOffset\n });\n }); // Reset stored captions since we added parsed\n // captions to a text track at this point\n\n if (this.transmuxer_) {\n this.transmuxer_.postMessage({\n action: 'clearParsedMp4Captions'\n });\n }\n }\n handleId3_(simpleSegment, id3Frames, dispatchType) {\n this.earlyAbortWhenNeeded_(simpleSegment.stats);\n if (this.checkForAbort_(simpleSegment.requestId)) {\n return;\n }\n const segmentInfo = this.pendingSegment_; // we need to have appended data in order for the timestamp offset to be set\n\n if (!segmentInfo.hasAppendedData_) {\n this.metadataQueue_.id3.push(this.handleId3_.bind(this, simpleSegment, id3Frames, dispatchType));\n return;\n }\n this.addMetadataToTextTrack(dispatchType, id3Frames, this.duration_());\n }\n processMetadataQueue_() {\n this.metadataQueue_.id3.forEach(fn => fn());\n this.metadataQueue_.caption.forEach(fn => fn());\n this.metadataQueue_.id3 = [];\n this.metadataQueue_.caption = [];\n }\n processCallQueue_() {\n const callQueue = this.callQueue_; // Clear out the queue before the queued functions are run, since some of the\n // functions may check the length of the load queue and default to pushing themselves\n // back onto the queue.\n\n this.callQueue_ = [];\n callQueue.forEach(fun => fun());\n }\n processLoadQueue_() {\n const loadQueue = this.loadQueue_; // Clear out the queue before the queued functions are run, since some of the\n // functions may check the length of the load queue and default to pushing themselves\n // back onto the queue.\n\n this.loadQueue_ = [];\n loadQueue.forEach(fun => fun());\n }\n /**\n * Determines whether the loader has enough info to load the next segment.\n *\n * @return {boolean}\n * Whether or not the loader has enough info to load the next segment\n */\n\n hasEnoughInfoToLoad_() {\n // Since primary timing goes by video, only the audio loader potentially needs to wait\n // to load.\n if (this.loaderType_ !== 'audio') {\n return true;\n }\n const segmentInfo = this.pendingSegment_; // A fill buffer must have already run to establish a pending segment before there's\n // enough info to load.\n\n if (!segmentInfo) {\n return false;\n } // The first segment can and should be loaded immediately so that source buffers are\n // created together (before appending). Source buffer creation uses the presence of\n // audio and video data to determine whether to create audio/video source buffers, and\n // uses processed (transmuxed or parsed) media to determine the types required.\n\n if (!this.getCurrentMediaInfo_()) {\n return true;\n }\n if (\n // Technically, instead of waiting to load a segment on timeline changes, a segment\n // can be requested and downloaded and only wait before it is transmuxed or parsed.\n // But in practice, there are a few reasons why it is better to wait until a loader\n // is ready to append that segment before requesting and downloading:\n //\n // 1. Because audio and main loaders cross discontinuities together, if this loader\n // is waiting for the other to catch up, then instead of requesting another\n // segment and using up more bandwidth, by not yet loading, more bandwidth is\n // allotted to the loader currently behind.\n // 2. media-segment-request doesn't have to have logic to consider whether a segment\n // is ready to be processed or not, isolating the queueing behavior to the loader.\n // 3. The audio loader bases some of its segment properties on timing information\n // provided by the main loader, meaning that, if the logic for waiting on\n // processing was in media-segment-request, then it would also need to know how\n // to re-generate the segment information after the main loader caught up.\n shouldWaitForTimelineChange({\n timelineChangeController: this.timelineChangeController_,\n currentTimeline: this.currentTimeline_,\n segmentTimeline: segmentInfo.timeline,\n loaderType: this.loaderType_,\n audioDisabled: this.audioDisabled_\n })) {\n return false;\n }\n return true;\n }\n getCurrentMediaInfo_(segmentInfo = this.pendingSegment_) {\n return segmentInfo && segmentInfo.trackInfo || this.currentMediaInfo_;\n }\n getMediaInfo_(segmentInfo = this.pendingSegment_) {\n return this.getCurrentMediaInfo_(segmentInfo) || this.startingMediaInfo_;\n }\n getPendingSegmentPlaylist() {\n return this.pendingSegment_ ? this.pendingSegment_.playlist : null;\n }\n hasEnoughInfoToAppend_() {\n if (!this.sourceUpdater_.ready()) {\n return false;\n } // If content needs to be removed or the loader is waiting on an append reattempt,\n // then no additional content should be appended until the prior append is resolved.\n\n if (this.waitingOnRemove_ || this.quotaExceededErrorRetryTimeout_) {\n return false;\n }\n const segmentInfo = this.pendingSegment_;\n const trackInfo = this.getCurrentMediaInfo_(); // no segment to append any data for or\n // we do not have information on this specific\n // segment yet\n\n if (!segmentInfo || !trackInfo) {\n return false;\n }\n const {\n hasAudio,\n hasVideo,\n isMuxed\n } = trackInfo;\n if (hasVideo && !segmentInfo.videoTimingInfo) {\n return false;\n } // muxed content only relies on video timing information for now.\n\n if (hasAudio && !this.audioDisabled_ && !isMuxed && !segmentInfo.audioTimingInfo) {\n return false;\n }\n if (shouldWaitForTimelineChange({\n timelineChangeController: this.timelineChangeController_,\n currentTimeline: this.currentTimeline_,\n segmentTimeline: segmentInfo.timeline,\n loaderType: this.loaderType_,\n audioDisabled: this.audioDisabled_\n })) {\n return false;\n }\n return true;\n }\n handleData_(simpleSegment, result) {\n this.earlyAbortWhenNeeded_(simpleSegment.stats);\n if (this.checkForAbort_(simpleSegment.requestId)) {\n return;\n } // If there's anything in the call queue, then this data came later and should be\n // executed after the calls currently queued.\n\n if (this.callQueue_.length || !this.hasEnoughInfoToAppend_()) {\n this.callQueue_.push(this.handleData_.bind(this, simpleSegment, result));\n return;\n }\n const segmentInfo = this.pendingSegment_; // update the time mapping so we can translate from display time to media time\n\n this.setTimeMapping_(segmentInfo.timeline); // for tracking overall stats\n\n this.updateMediaSecondsLoaded_(segmentInfo.part || segmentInfo.segment); // Note that the state isn't changed from loading to appending. This is because abort\n // logic may change behavior depending on the state, and changing state too early may\n // inflate our estimates of bandwidth. In the future this should be re-examined to\n // note more granular states.\n // don't process and append data if the mediaSource is closed\n\n if (this.mediaSource_.readyState === 'closed') {\n return;\n } // if this request included an initialization segment, save that data\n // to the initSegment cache\n\n if (simpleSegment.map) {\n simpleSegment.map = this.initSegmentForMap(simpleSegment.map, true); // move over init segment properties to media request\n\n segmentInfo.segment.map = simpleSegment.map;\n } // if this request included a segment key, save that data in the cache\n\n if (simpleSegment.key) {\n this.segmentKey(simpleSegment.key, true);\n }\n segmentInfo.isFmp4 = simpleSegment.isFmp4;\n segmentInfo.timingInfo = segmentInfo.timingInfo || {};\n if (segmentInfo.isFmp4) {\n this.trigger('fmp4');\n segmentInfo.timingInfo.start = segmentInfo[timingInfoPropertyForMedia(result.type)].start;\n } else {\n const trackInfo = this.getCurrentMediaInfo_();\n const useVideoTimingInfo = this.loaderType_ === 'main' && trackInfo && trackInfo.hasVideo;\n let firstVideoFrameTimeForData;\n if (useVideoTimingInfo) {\n firstVideoFrameTimeForData = segmentInfo.videoTimingInfo.start;\n } // Segment loader knows more about segment timing than the transmuxer (in certain\n // aspects), so make any changes required for a more accurate start time.\n // Don't set the end time yet, as the segment may not be finished processing.\n\n segmentInfo.timingInfo.start = this.trueSegmentStart_({\n currentStart: segmentInfo.timingInfo.start,\n playlist: segmentInfo.playlist,\n mediaIndex: segmentInfo.mediaIndex,\n currentVideoTimestampOffset: this.sourceUpdater_.videoTimestampOffset(),\n useVideoTimingInfo,\n firstVideoFrameTimeForData,\n videoTimingInfo: segmentInfo.videoTimingInfo,\n audioTimingInfo: segmentInfo.audioTimingInfo\n });\n } // Init segments for audio and video only need to be appended in certain cases. Now\n // that data is about to be appended, we can check the final cases to determine\n // whether we should append an init segment.\n\n this.updateAppendInitSegmentStatus(segmentInfo, result.type); // Timestamp offset should be updated once we get new data and have its timing info,\n // as we use the start of the segment to offset the best guess (playlist provided)\n // timestamp offset.\n\n this.updateSourceBufferTimestampOffset_(segmentInfo); // if this is a sync request we need to determine whether it should\n // be appended or not.\n\n if (segmentInfo.isSyncRequest) {\n // first save/update our timing info for this segment.\n // this is what allows us to choose an accurate segment\n // and the main reason we make a sync request.\n this.updateTimingInfoEnd_(segmentInfo);\n this.syncController_.saveSegmentTimingInfo({\n segmentInfo,\n shouldSaveTimelineMapping: this.loaderType_ === 'main'\n });\n const next = this.chooseNextRequest_(); // If the sync request isn't the segment that would be requested next\n // after taking into account its timing info, do not append it.\n\n if (next.mediaIndex !== segmentInfo.mediaIndex || next.partIndex !== segmentInfo.partIndex) {\n this.logger_('sync segment was incorrect, not appending');\n return;\n } // otherwise append it like any other segment as our guess was correct.\n\n this.logger_('sync segment was correct, appending');\n } // Save some state so that in the future anything waiting on first append (and/or\n // timestamp offset(s)) can process immediately. While the extra state isn't optimal,\n // we need some notion of whether the timestamp offset or other relevant information\n // has had a chance to be set.\n\n segmentInfo.hasAppendedData_ = true; // Now that the timestamp offset should be set, we can append any waiting ID3 tags.\n\n this.processMetadataQueue_();\n this.appendData_(segmentInfo, result);\n }\n updateAppendInitSegmentStatus(segmentInfo, type) {\n // alt audio doesn't manage timestamp offset\n if (this.loaderType_ === 'main' && typeof segmentInfo.timestampOffset === 'number' &&\n // in the case that we're handling partial data, we don't want to append an init\n // segment for each chunk\n !segmentInfo.changedTimestampOffset) {\n // if the timestamp offset changed, the timeline may have changed, so we have to re-\n // append init segments\n this.appendInitSegment_ = {\n audio: true,\n video: true\n };\n }\n if (this.playlistOfLastInitSegment_[type] !== segmentInfo.playlist) {\n // make sure we append init segment on playlist changes, in case the media config\n // changed\n this.appendInitSegment_[type] = true;\n }\n }\n getInitSegmentAndUpdateState_({\n type,\n initSegment,\n map,\n playlist\n }) {\n // \"The EXT-X-MAP tag specifies how to obtain the Media Initialization Section\n // (Section 3) required to parse the applicable Media Segments. It applies to every\n // Media Segment that appears after it in the Playlist until the next EXT-X-MAP tag\n // or until the end of the playlist.\"\n // https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.2.5\n if (map) {\n const id = initSegmentId(map);\n if (this.activeInitSegmentId_ === id) {\n // don't need to re-append the init segment if the ID matches\n return null;\n } // a map-specified init segment takes priority over any transmuxed (or otherwise\n // obtained) init segment\n //\n // this also caches the init segment for later use\n\n initSegment = this.initSegmentForMap(map, true).bytes;\n this.activeInitSegmentId_ = id;\n } // We used to always prepend init segments for video, however, that shouldn't be\n // necessary. Instead, we should only append on changes, similar to what we've always\n // done for audio. This is more important (though may not be that important) for\n // frame-by-frame appending for LHLS, simply because of the increased quantity of\n // appends.\n\n if (initSegment && this.appendInitSegment_[type]) {\n // Make sure we track the playlist that we last used for the init segment, so that\n // we can re-append the init segment in the event that we get data from a new\n // playlist. Discontinuities and track changes are handled in other sections.\n this.playlistOfLastInitSegment_[type] = playlist; // Disable future init segment appends for this type. Until a change is necessary.\n\n this.appendInitSegment_[type] = false; // we need to clear out the fmp4 active init segment id, since\n // we are appending the muxer init segment\n\n this.activeInitSegmentId_ = null;\n return initSegment;\n }\n return null;\n }\n handleQuotaExceededError_({\n segmentInfo,\n type,\n bytes\n }, error) {\n const audioBuffered = this.sourceUpdater_.audioBuffered();\n const videoBuffered = this.sourceUpdater_.videoBuffered(); // For now we're ignoring any notion of gaps in the buffer, but they, in theory,\n // should be cleared out during the buffer removals. However, log in case it helps\n // debug.\n\n if (audioBuffered.length > 1) {\n this.logger_('On QUOTA_EXCEEDED_ERR, found gaps in the audio buffer: ' + timeRangesToArray(audioBuffered).join(', '));\n }\n if (videoBuffered.length > 1) {\n this.logger_('On QUOTA_EXCEEDED_ERR, found gaps in the video buffer: ' + timeRangesToArray(videoBuffered).join(', '));\n }\n const audioBufferStart = audioBuffered.length ? audioBuffered.start(0) : 0;\n const audioBufferEnd = audioBuffered.length ? audioBuffered.end(audioBuffered.length - 1) : 0;\n const videoBufferStart = videoBuffered.length ? videoBuffered.start(0) : 0;\n const videoBufferEnd = videoBuffered.length ? videoBuffered.end(videoBuffered.length - 1) : 0;\n if (audioBufferEnd - audioBufferStart <= MIN_BACK_BUFFER && videoBufferEnd - videoBufferStart <= MIN_BACK_BUFFER) {\n // Can't remove enough buffer to make room for new segment (or the browser doesn't\n // allow for appends of segments this size). In the future, it may be possible to\n // split up the segment and append in pieces, but for now, error out this playlist\n // in an attempt to switch to a more manageable rendition.\n this.logger_('On QUOTA_EXCEEDED_ERR, single segment too large to append to ' + 'buffer, triggering an error. ' + `Appended byte length: ${bytes.byteLength}, ` + `audio buffer: ${timeRangesToArray(audioBuffered).join(', ')}, ` + `video buffer: ${timeRangesToArray(videoBuffered).join(', ')}, `);\n this.error({\n message: 'Quota exceeded error with append of a single segment of content',\n excludeUntil: Infinity\n });\n this.trigger('error');\n return;\n } // To try to resolve the quota exceeded error, clear back buffer and retry. This means\n // that the segment-loader should block on future events until this one is handled, so\n // that it doesn't keep moving onto further segments. Adding the call to the call\n // queue will prevent further appends until waitingOnRemove_ and\n // quotaExceededErrorRetryTimeout_ are cleared.\n //\n // Note that this will only block the current loader. In the case of demuxed content,\n // the other load may keep filling as fast as possible. In practice, this should be\n // OK, as it is a rare case when either audio has a high enough bitrate to fill up a\n // source buffer, or video fills without enough room for audio to append (and without\n // the availability of clearing out seconds of back buffer to make room for audio).\n // But it might still be good to handle this case in the future as a TODO.\n\n this.waitingOnRemove_ = true;\n this.callQueue_.push(this.appendToSourceBuffer_.bind(this, {\n segmentInfo,\n type,\n bytes\n }));\n const currentTime = this.currentTime_(); // Try to remove as much audio and video as possible to make room for new content\n // before retrying.\n\n const timeToRemoveUntil = currentTime - MIN_BACK_BUFFER;\n this.logger_(`On QUOTA_EXCEEDED_ERR, removing audio/video from 0 to ${timeToRemoveUntil}`);\n this.remove(0, timeToRemoveUntil, () => {\n this.logger_(`On QUOTA_EXCEEDED_ERR, retrying append in ${MIN_BACK_BUFFER}s`);\n this.waitingOnRemove_ = false; // wait the length of time alotted in the back buffer to prevent wasted\n // attempts (since we can't clear less than the minimum)\n\n this.quotaExceededErrorRetryTimeout_ = window$1.setTimeout(() => {\n this.logger_('On QUOTA_EXCEEDED_ERR, re-processing call queue');\n this.quotaExceededErrorRetryTimeout_ = null;\n this.processCallQueue_();\n }, MIN_BACK_BUFFER * 1000);\n }, true);\n }\n handleAppendError_({\n segmentInfo,\n type,\n bytes\n }, error) {\n // if there's no error, nothing to do\n if (!error) {\n return;\n }\n if (error.code === QUOTA_EXCEEDED_ERR) {\n this.handleQuotaExceededError_({\n segmentInfo,\n type,\n bytes\n }); // A quota exceeded error should be recoverable with a future re-append, so no need\n // to trigger an append error.\n\n return;\n }\n this.logger_('Received non QUOTA_EXCEEDED_ERR on append', error);\n this.error(`${type} append of ${bytes.length}b failed for segment ` + `#${segmentInfo.mediaIndex} in playlist ${segmentInfo.playlist.id}`); // If an append errors, we often can't recover.\n // (see https://w3c.github.io/media-source/#sourcebuffer-append-error).\n //\n // Trigger a special error so that it can be handled separately from normal,\n // recoverable errors.\n\n this.trigger('appenderror');\n }\n appendToSourceBuffer_({\n segmentInfo,\n type,\n initSegment,\n data,\n bytes\n }) {\n // If this is a re-append, bytes were already created and don't need to be recreated\n if (!bytes) {\n const segments = [data];\n let byteLength = data.byteLength;\n if (initSegment) {\n // if the media initialization segment is changing, append it before the content\n // segment\n segments.unshift(initSegment);\n byteLength += initSegment.byteLength;\n } // Technically we should be OK appending the init segment separately, however, we\n // haven't yet tested that, and prepending is how we have always done things.\n\n bytes = concatSegments({\n bytes: byteLength,\n segments\n });\n }\n this.sourceUpdater_.appendBuffer({\n segmentInfo,\n type,\n bytes\n }, this.handleAppendError_.bind(this, {\n segmentInfo,\n type,\n bytes\n }));\n }\n handleSegmentTimingInfo_(type, requestId, segmentTimingInfo) {\n if (!this.pendingSegment_ || requestId !== this.pendingSegment_.requestId) {\n return;\n }\n const segment = this.pendingSegment_.segment;\n const timingInfoProperty = `${type}TimingInfo`;\n if (!segment[timingInfoProperty]) {\n segment[timingInfoProperty] = {};\n }\n segment[timingInfoProperty].transmuxerPrependedSeconds = segmentTimingInfo.prependedContentDuration || 0;\n segment[timingInfoProperty].transmuxedPresentationStart = segmentTimingInfo.start.presentation;\n segment[timingInfoProperty].transmuxedDecodeStart = segmentTimingInfo.start.decode;\n segment[timingInfoProperty].transmuxedPresentationEnd = segmentTimingInfo.end.presentation;\n segment[timingInfoProperty].transmuxedDecodeEnd = segmentTimingInfo.end.decode; // mainly used as a reference for debugging\n\n segment[timingInfoProperty].baseMediaDecodeTime = segmentTimingInfo.baseMediaDecodeTime;\n }\n appendData_(segmentInfo, result) {\n const {\n type,\n data\n } = result;\n if (!data || !data.byteLength) {\n return;\n }\n if (type === 'audio' && this.audioDisabled_) {\n return;\n }\n const initSegment = this.getInitSegmentAndUpdateState_({\n type,\n initSegment: result.initSegment,\n playlist: segmentInfo.playlist,\n map: segmentInfo.isFmp4 ? segmentInfo.segment.map : null\n });\n this.appendToSourceBuffer_({\n segmentInfo,\n type,\n initSegment,\n data\n });\n }\n /**\n * load a specific segment from a request into the buffer\n *\n * @private\n */\n\n loadSegment_(segmentInfo) {\n this.state = 'WAITING';\n this.pendingSegment_ = segmentInfo;\n this.trimBackBuffer_(segmentInfo);\n if (typeof segmentInfo.timestampOffset === 'number') {\n if (this.transmuxer_) {\n this.transmuxer_.postMessage({\n action: 'clearAllMp4Captions'\n });\n }\n }\n if (!this.hasEnoughInfoToLoad_()) {\n this.loadQueue_.push(() => {\n // regenerate the audioAppendStart, timestampOffset, etc as they\n // may have changed since this function was added to the queue.\n const options = _extends({}, segmentInfo, {\n forceTimestampOffset: true\n });\n _extends(segmentInfo, this.generateSegmentInfo_(options));\n this.isPendingTimestampOffset_ = false;\n this.updateTransmuxerAndRequestSegment_(segmentInfo);\n });\n return;\n }\n this.updateTransmuxerAndRequestSegment_(segmentInfo);\n }\n updateTransmuxerAndRequestSegment_(segmentInfo) {\n // We'll update the source buffer's timestamp offset once we have transmuxed data, but\n // the transmuxer still needs to be updated before then.\n //\n // Even though keepOriginalTimestamps is set to true for the transmuxer, timestamp\n // offset must be passed to the transmuxer for stream correcting adjustments.\n if (this.shouldUpdateTransmuxerTimestampOffset_(segmentInfo.timestampOffset)) {\n this.gopBuffer_.length = 0; // gopsToAlignWith was set before the GOP buffer was cleared\n\n segmentInfo.gopsToAlignWith = [];\n this.timeMapping_ = 0; // reset values in the transmuxer since a discontinuity should start fresh\n\n this.transmuxer_.postMessage({\n action: 'reset'\n });\n this.transmuxer_.postMessage({\n action: 'setTimestampOffset',\n timestampOffset: segmentInfo.timestampOffset\n });\n }\n const simpleSegment = this.createSimplifiedSegmentObj_(segmentInfo);\n const isEndOfStream = this.isEndOfStream_(segmentInfo.mediaIndex, segmentInfo.playlist, segmentInfo.partIndex);\n const isWalkingForward = this.mediaIndex !== null;\n const isDiscontinuity = segmentInfo.timeline !== this.currentTimeline_ &&\n // currentTimeline starts at -1, so we shouldn't end the timeline switching to 0,\n // the first timeline\n segmentInfo.timeline > 0;\n const isEndOfTimeline = isEndOfStream || isWalkingForward && isDiscontinuity;\n this.logger_(`Requesting ${segmentInfoString(segmentInfo)}`); // If there's an init segment associated with this segment, but it is not cached (identified by a lack of bytes),\n // then this init segment has never been seen before and should be appended.\n //\n // At this point the content type (audio/video or both) is not yet known, but it should be safe to set\n // both to true and leave the decision of whether to append the init segment to append time.\n\n if (simpleSegment.map && !simpleSegment.map.bytes) {\n this.logger_('going to request init segment.');\n this.appendInitSegment_ = {\n video: true,\n audio: true\n };\n }\n segmentInfo.abortRequests = mediaSegmentRequest({\n xhr: this.vhs_.xhr,\n xhrOptions: this.xhrOptions_,\n decryptionWorker: this.decrypter_,\n segment: simpleSegment,\n abortFn: this.handleAbort_.bind(this, segmentInfo),\n progressFn: this.handleProgress_.bind(this),\n trackInfoFn: this.handleTrackInfo_.bind(this),\n timingInfoFn: this.handleTimingInfo_.bind(this),\n videoSegmentTimingInfoFn: this.handleSegmentTimingInfo_.bind(this, 'video', segmentInfo.requestId),\n audioSegmentTimingInfoFn: this.handleSegmentTimingInfo_.bind(this, 'audio', segmentInfo.requestId),\n captionsFn: this.handleCaptions_.bind(this),\n isEndOfTimeline,\n endedTimelineFn: () => {\n this.logger_('received endedtimeline callback');\n },\n id3Fn: this.handleId3_.bind(this),\n dataFn: this.handleData_.bind(this),\n doneFn: this.segmentRequestFinished_.bind(this),\n onTransmuxerLog: ({\n message,\n level,\n stream\n }) => {\n this.logger_(`${segmentInfoString(segmentInfo)} logged from transmuxer stream ${stream} as a ${level}: ${message}`);\n }\n });\n }\n /**\n * trim the back buffer so that we don't have too much data\n * in the source buffer\n *\n * @private\n *\n * @param {Object} segmentInfo - the current segment\n */\n\n trimBackBuffer_(segmentInfo) {\n const removeToTime = safeBackBufferTrimTime(this.seekable_(), this.currentTime_(), this.playlist_.targetDuration || 10); // Chrome has a hard limit of 150MB of\n // buffer and a very conservative \"garbage collector\"\n // We manually clear out the old buffer to ensure\n // we don't trigger the QuotaExceeded error\n // on the source buffer during subsequent appends\n\n if (removeToTime > 0) {\n this.remove(0, removeToTime);\n }\n }\n /**\n * created a simplified copy of the segment object with just the\n * information necessary to perform the XHR and decryption\n *\n * @private\n *\n * @param {Object} segmentInfo - the current segment\n * @return {Object} a simplified segment object copy\n */\n\n createSimplifiedSegmentObj_(segmentInfo) {\n const segment = segmentInfo.segment;\n const part = segmentInfo.part;\n const simpleSegment = {\n resolvedUri: part ? part.resolvedUri : segment.resolvedUri,\n byterange: part ? part.byterange : segment.byterange,\n requestId: segmentInfo.requestId,\n transmuxer: segmentInfo.transmuxer,\n audioAppendStart: segmentInfo.audioAppendStart,\n gopsToAlignWith: segmentInfo.gopsToAlignWith,\n part: segmentInfo.part\n };\n const previousSegment = segmentInfo.playlist.segments[segmentInfo.mediaIndex - 1];\n if (previousSegment && previousSegment.timeline === segment.timeline) {\n // The baseStartTime of a segment is used to handle rollover when probing the TS\n // segment to retrieve timing information. Since the probe only looks at the media's\n // times (e.g., PTS and DTS values of the segment), and doesn't consider the\n // player's time (e.g., player.currentTime()), baseStartTime should reflect the\n // media time as well. transmuxedDecodeEnd represents the end time of a segment, in\n // seconds of media time, so should be used here. The previous segment is used since\n // the end of the previous segment should represent the beginning of the current\n // segment, so long as they are on the same timeline.\n if (previousSegment.videoTimingInfo) {\n simpleSegment.baseStartTime = previousSegment.videoTimingInfo.transmuxedDecodeEnd;\n } else if (previousSegment.audioTimingInfo) {\n simpleSegment.baseStartTime = previousSegment.audioTimingInfo.transmuxedDecodeEnd;\n }\n }\n if (segment.key) {\n // if the media sequence is greater than 2^32, the IV will be incorrect\n // assuming 10s segments, that would be about 1300 years\n const iv = segment.key.iv || new Uint32Array([0, 0, 0, segmentInfo.mediaIndex + segmentInfo.playlist.mediaSequence]);\n simpleSegment.key = this.segmentKey(segment.key);\n simpleSegment.key.iv = iv;\n }\n if (segment.map) {\n simpleSegment.map = this.initSegmentForMap(segment.map);\n }\n return simpleSegment;\n }\n saveTransferStats_(stats) {\n // every request counts as a media request even if it has been aborted\n // or canceled due to a timeout\n this.mediaRequests += 1;\n if (stats) {\n this.mediaBytesTransferred += stats.bytesReceived;\n this.mediaTransferDuration += stats.roundTripTime;\n }\n }\n saveBandwidthRelatedStats_(duration, stats) {\n // byteLength will be used for throughput, and should be based on bytes receieved,\n // which we only know at the end of the request and should reflect total bytes\n // downloaded rather than just bytes processed from components of the segment\n this.pendingSegment_.byteLength = stats.bytesReceived;\n if (duration < MIN_SEGMENT_DURATION_TO_SAVE_STATS) {\n this.logger_(`Ignoring segment's bandwidth because its duration of ${duration}` + ` is less than the min to record ${MIN_SEGMENT_DURATION_TO_SAVE_STATS}`);\n return;\n }\n this.bandwidth = stats.bandwidth;\n this.roundTrip = stats.roundTripTime;\n }\n handleTimeout_() {\n // although the VTT segment loader bandwidth isn't really used, it's good to\n // maintain functinality between segment loaders\n this.mediaRequestsTimedout += 1;\n this.bandwidth = 1;\n this.roundTrip = NaN;\n this.trigger('bandwidthupdate');\n this.trigger('timeout');\n }\n /**\n * Handle the callback from the segmentRequest function and set the\n * associated SegmentLoader state and errors if necessary\n *\n * @private\n */\n\n segmentRequestFinished_(error, simpleSegment, result) {\n // TODO handle special cases, e.g., muxed audio/video but only audio in the segment\n // check the call queue directly since this function doesn't need to deal with any\n // data, and can continue even if the source buffers are not set up and we didn't get\n // any data from the segment\n if (this.callQueue_.length) {\n this.callQueue_.push(this.segmentRequestFinished_.bind(this, error, simpleSegment, result));\n return;\n }\n this.saveTransferStats_(simpleSegment.stats); // The request was aborted and the SegmentLoader has already been reset\n\n if (!this.pendingSegment_) {\n return;\n } // the request was aborted and the SegmentLoader has already started\n // another request. this can happen when the timeout for an aborted\n // request triggers due to a limitation in the XHR library\n // do not count this as any sort of request or we risk double-counting\n\n if (simpleSegment.requestId !== this.pendingSegment_.requestId) {\n return;\n } // an error occurred from the active pendingSegment_ so reset everything\n\n if (error) {\n this.pendingSegment_ = null;\n this.state = 'READY'; // aborts are not a true error condition and nothing corrective needs to be done\n\n if (error.code === REQUEST_ERRORS.ABORTED) {\n return;\n }\n this.pause(); // the error is really just that at least one of the requests timed-out\n // set the bandwidth to a very low value and trigger an ABR switch to\n // take emergency action\n\n if (error.code === REQUEST_ERRORS.TIMEOUT) {\n this.handleTimeout_();\n return;\n } // if control-flow has arrived here, then the error is real\n // emit an error event to exclude the current playlist\n\n this.mediaRequestsErrored += 1;\n this.error(error);\n this.trigger('error');\n return;\n }\n const segmentInfo = this.pendingSegment_; // the response was a success so set any bandwidth stats the request\n // generated for ABR purposes\n\n this.saveBandwidthRelatedStats_(segmentInfo.duration, simpleSegment.stats);\n segmentInfo.endOfAllRequests = simpleSegment.endOfAllRequests;\n if (result.gopInfo) {\n this.gopBuffer_ = updateGopBuffer(this.gopBuffer_, result.gopInfo, this.safeAppend_);\n } // Although we may have already started appending on progress, we shouldn't switch the\n // state away from loading until we are officially done loading the segment data.\n\n this.state = 'APPENDING'; // used for testing\n\n this.trigger('appending');\n this.waitForAppendsToComplete_(segmentInfo);\n }\n setTimeMapping_(timeline) {\n const timelineMapping = this.syncController_.mappingForTimeline(timeline);\n if (timelineMapping !== null) {\n this.timeMapping_ = timelineMapping;\n }\n }\n updateMediaSecondsLoaded_(segment) {\n if (typeof segment.start === 'number' && typeof segment.end === 'number') {\n this.mediaSecondsLoaded += segment.end - segment.start;\n } else {\n this.mediaSecondsLoaded += segment.duration;\n }\n }\n shouldUpdateTransmuxerTimestampOffset_(timestampOffset) {\n if (timestampOffset === null) {\n return false;\n } // note that we're potentially using the same timestamp offset for both video and\n // audio\n\n if (this.loaderType_ === 'main' && timestampOffset !== this.sourceUpdater_.videoTimestampOffset()) {\n return true;\n }\n if (!this.audioDisabled_ && timestampOffset !== this.sourceUpdater_.audioTimestampOffset()) {\n return true;\n }\n return false;\n }\n trueSegmentStart_({\n currentStart,\n playlist,\n mediaIndex,\n firstVideoFrameTimeForData,\n currentVideoTimestampOffset,\n useVideoTimingInfo,\n videoTimingInfo,\n audioTimingInfo\n }) {\n if (typeof currentStart !== 'undefined') {\n // if start was set once, keep using it\n return currentStart;\n }\n if (!useVideoTimingInfo) {\n return audioTimingInfo.start;\n }\n const previousSegment = playlist.segments[mediaIndex - 1]; // The start of a segment should be the start of the first full frame contained\n // within that segment. Since the transmuxer maintains a cache of incomplete data\n // from and/or the last frame seen, the start time may reflect a frame that starts\n // in the previous segment. Check for that case and ensure the start time is\n // accurate for the segment.\n\n if (mediaIndex === 0 || !previousSegment || typeof previousSegment.start === 'undefined' || previousSegment.end !== firstVideoFrameTimeForData + currentVideoTimestampOffset) {\n return firstVideoFrameTimeForData;\n }\n return videoTimingInfo.start;\n }\n waitForAppendsToComplete_(segmentInfo) {\n const trackInfo = this.getCurrentMediaInfo_(segmentInfo);\n if (!trackInfo) {\n this.error({\n message: 'No starting media returned, likely due to an unsupported media format.',\n playlistExclusionDuration: Infinity\n });\n this.trigger('error');\n return;\n } // Although transmuxing is done, appends may not yet be finished. Throw a marker\n // on each queue this loader is responsible for to ensure that the appends are\n // complete.\n\n const {\n hasAudio,\n hasVideo,\n isMuxed\n } = trackInfo;\n const waitForVideo = this.loaderType_ === 'main' && hasVideo;\n const waitForAudio = !this.audioDisabled_ && hasAudio && !isMuxed;\n segmentInfo.waitingOnAppends = 0; // segments with no data\n\n if (!segmentInfo.hasAppendedData_) {\n if (!segmentInfo.timingInfo && typeof segmentInfo.timestampOffset === 'number') {\n // When there's no audio or video data in the segment, there's no audio or video\n // timing information.\n //\n // If there's no audio or video timing information, then the timestamp offset\n // can't be adjusted to the appropriate value for the transmuxer and source\n // buffers.\n //\n // Therefore, the next segment should be used to set the timestamp offset.\n this.isPendingTimestampOffset_ = true;\n } // override settings for metadata only segments\n\n segmentInfo.timingInfo = {\n start: 0\n };\n segmentInfo.waitingOnAppends++;\n if (!this.isPendingTimestampOffset_) {\n // update the timestampoffset\n this.updateSourceBufferTimestampOffset_(segmentInfo); // make sure the metadata queue is processed even though we have\n // no video/audio data.\n\n this.processMetadataQueue_();\n } // append is \"done\" instantly with no data.\n\n this.checkAppendsDone_(segmentInfo);\n return;\n } // Since source updater could call back synchronously, do the increments first.\n\n if (waitForVideo) {\n segmentInfo.waitingOnAppends++;\n }\n if (waitForAudio) {\n segmentInfo.waitingOnAppends++;\n }\n if (waitForVideo) {\n this.sourceUpdater_.videoQueueCallback(this.checkAppendsDone_.bind(this, segmentInfo));\n }\n if (waitForAudio) {\n this.sourceUpdater_.audioQueueCallback(this.checkAppendsDone_.bind(this, segmentInfo));\n }\n }\n checkAppendsDone_(segmentInfo) {\n if (this.checkForAbort_(segmentInfo.requestId)) {\n return;\n }\n segmentInfo.waitingOnAppends--;\n if (segmentInfo.waitingOnAppends === 0) {\n this.handleAppendsDone_();\n }\n }\n checkForIllegalMediaSwitch(trackInfo) {\n const illegalMediaSwitchError = illegalMediaSwitch(this.loaderType_, this.getCurrentMediaInfo_(), trackInfo);\n if (illegalMediaSwitchError) {\n this.error({\n message: illegalMediaSwitchError,\n playlistExclusionDuration: Infinity\n });\n this.trigger('error');\n return true;\n }\n return false;\n }\n updateSourceBufferTimestampOffset_(segmentInfo) {\n if (segmentInfo.timestampOffset === null ||\n // we don't yet have the start for whatever media type (video or audio) has\n // priority, timing-wise, so we must wait\n typeof segmentInfo.timingInfo.start !== 'number' ||\n // already updated the timestamp offset for this segment\n segmentInfo.changedTimestampOffset ||\n // the alt audio loader should not be responsible for setting the timestamp offset\n this.loaderType_ !== 'main') {\n return;\n }\n let didChange = false; // Primary timing goes by video, and audio is trimmed in the transmuxer, meaning that\n // the timing info here comes from video. In the event that the audio is longer than\n // the video, this will trim the start of the audio.\n // This also trims any offset from 0 at the beginning of the media\n\n segmentInfo.timestampOffset -= this.getSegmentStartTimeForTimestampOffsetCalculation_({\n videoTimingInfo: segmentInfo.segment.videoTimingInfo,\n audioTimingInfo: segmentInfo.segment.audioTimingInfo,\n timingInfo: segmentInfo.timingInfo\n }); // In the event that there are part segment downloads, each will try to update the\n // timestamp offset. Retaining this bit of state prevents us from updating in the\n // future (within the same segment), however, there may be a better way to handle it.\n\n segmentInfo.changedTimestampOffset = true;\n if (segmentInfo.timestampOffset !== this.sourceUpdater_.videoTimestampOffset()) {\n this.sourceUpdater_.videoTimestampOffset(segmentInfo.timestampOffset);\n didChange = true;\n }\n if (segmentInfo.timestampOffset !== this.sourceUpdater_.audioTimestampOffset()) {\n this.sourceUpdater_.audioTimestampOffset(segmentInfo.timestampOffset);\n didChange = true;\n }\n if (didChange) {\n this.trigger('timestampoffset');\n }\n }\n getSegmentStartTimeForTimestampOffsetCalculation_({\n videoTimingInfo,\n audioTimingInfo,\n timingInfo\n }) {\n if (!this.useDtsForTimestampOffset_) {\n return timingInfo.start;\n }\n if (videoTimingInfo && typeof videoTimingInfo.transmuxedDecodeStart === 'number') {\n return videoTimingInfo.transmuxedDecodeStart;\n } // handle audio only\n\n if (audioTimingInfo && typeof audioTimingInfo.transmuxedDecodeStart === 'number') {\n return audioTimingInfo.transmuxedDecodeStart;\n } // handle content not transmuxed (e.g., MP4)\n\n return timingInfo.start;\n }\n updateTimingInfoEnd_(segmentInfo) {\n segmentInfo.timingInfo = segmentInfo.timingInfo || {};\n const trackInfo = this.getMediaInfo_();\n const useVideoTimingInfo = this.loaderType_ === 'main' && trackInfo && trackInfo.hasVideo;\n const prioritizedTimingInfo = useVideoTimingInfo && segmentInfo.videoTimingInfo ? segmentInfo.videoTimingInfo : segmentInfo.audioTimingInfo;\n if (!prioritizedTimingInfo) {\n return;\n }\n segmentInfo.timingInfo.end = typeof prioritizedTimingInfo.end === 'number' ?\n // End time may not exist in a case where we aren't parsing the full segment (one\n // current example is the case of fmp4), so use the rough duration to calculate an\n // end time.\n prioritizedTimingInfo.end : prioritizedTimingInfo.start + segmentInfo.duration;\n }\n /**\n * callback to run when appendBuffer is finished. detects if we are\n * in a good state to do things with the data we got, or if we need\n * to wait for more\n *\n * @private\n */\n\n handleAppendsDone_() {\n // appendsdone can cause an abort\n if (this.pendingSegment_) {\n this.trigger('appendsdone');\n }\n if (!this.pendingSegment_) {\n this.state = 'READY'; // TODO should this move into this.checkForAbort to speed up requests post abort in\n // all appending cases?\n\n if (!this.paused()) {\n this.monitorBuffer_();\n }\n return;\n }\n const segmentInfo = this.pendingSegment_; // Now that the end of the segment has been reached, we can set the end time. It's\n // best to wait until all appends are done so we're sure that the primary media is\n // finished (and we have its end time).\n\n this.updateTimingInfoEnd_(segmentInfo);\n if (this.shouldSaveSegmentTimingInfo_) {\n // Timeline mappings should only be saved for the main loader. This is for multiple\n // reasons:\n //\n // 1) Only one mapping is saved per timeline, meaning that if both the audio loader\n // and the main loader try to save the timeline mapping, whichever comes later\n // will overwrite the first. In theory this is OK, as the mappings should be the\n // same, however, it breaks for (2)\n // 2) In the event of a live stream, the initial live point will make for a somewhat\n // arbitrary mapping. If audio and video streams are not perfectly in-sync, then\n // the mapping will be off for one of the streams, dependent on which one was\n // first saved (see (1)).\n // 3) Primary timing goes by video in VHS, so the mapping should be video.\n //\n // Since the audio loader will wait for the main loader to load the first segment,\n // the main loader will save the first timeline mapping, and ensure that there won't\n // be a case where audio loads two segments without saving a mapping (thus leading\n // to missing segment timing info).\n this.syncController_.saveSegmentTimingInfo({\n segmentInfo,\n shouldSaveTimelineMapping: this.loaderType_ === 'main'\n });\n }\n const segmentDurationMessage = getTroublesomeSegmentDurationMessage(segmentInfo, this.sourceType_);\n if (segmentDurationMessage) {\n if (segmentDurationMessage.severity === 'warn') {\n videojs.log.warn(segmentDurationMessage.message);\n } else {\n this.logger_(segmentDurationMessage.message);\n }\n }\n this.recordThroughput_(segmentInfo);\n this.pendingSegment_ = null;\n this.state = 'READY';\n if (segmentInfo.isSyncRequest) {\n this.trigger('syncinfoupdate'); // if the sync request was not appended\n // then it was not the correct segment.\n // throw it away and use the data it gave us\n // to get the correct one.\n\n if (!segmentInfo.hasAppendedData_) {\n this.logger_(`Throwing away un-appended sync request ${segmentInfoString(segmentInfo)}`);\n return;\n }\n }\n this.logger_(`Appended ${segmentInfoString(segmentInfo)}`);\n this.addSegmentMetadataCue_(segmentInfo);\n if (this.currentTime_() >= this.replaceSegmentsUntil_) {\n this.replaceSegmentsUntil_ = -1;\n this.fetchAtBuffer_ = true;\n }\n if (this.currentTimeline_ !== segmentInfo.timeline) {\n this.timelineChangeController_.lastTimelineChange({\n type: this.loaderType_,\n from: this.currentTimeline_,\n to: segmentInfo.timeline\n }); // If audio is not disabled, the main segment loader is responsible for updating\n // the audio timeline as well. If the content is video only, this won't have any\n // impact.\n\n if (this.loaderType_ === 'main' && !this.audioDisabled_) {\n this.timelineChangeController_.lastTimelineChange({\n type: 'audio',\n from: this.currentTimeline_,\n to: segmentInfo.timeline\n });\n }\n }\n this.currentTimeline_ = segmentInfo.timeline; // We must update the syncinfo to recalculate the seekable range before\n // the following conditional otherwise it may consider this a bad \"guess\"\n // and attempt to resync when the post-update seekable window and live\n // point would mean that this was the perfect segment to fetch\n\n this.trigger('syncinfoupdate');\n const segment = segmentInfo.segment;\n const part = segmentInfo.part;\n const badSegmentGuess = segment.end && this.currentTime_() - segment.end > segmentInfo.playlist.targetDuration * 3;\n const badPartGuess = part && part.end && this.currentTime_() - part.end > segmentInfo.playlist.partTargetDuration * 3; // If we previously appended a segment/part that ends more than 3 part/targetDurations before\n // the currentTime_ that means that our conservative guess was too conservative.\n // In that case, reset the loader state so that we try to use any information gained\n // from the previous request to create a new, more accurate, sync-point.\n\n if (badSegmentGuess || badPartGuess) {\n this.logger_(`bad ${badSegmentGuess ? 'segment' : 'part'} ${segmentInfoString(segmentInfo)}`);\n this.resetEverything();\n return;\n }\n const isWalkingForward = this.mediaIndex !== null; // Don't do a rendition switch unless we have enough time to get a sync segment\n // and conservatively guess\n\n if (isWalkingForward) {\n this.trigger('bandwidthupdate');\n }\n this.trigger('progress');\n this.mediaIndex = segmentInfo.mediaIndex;\n this.partIndex = segmentInfo.partIndex; // any time an update finishes and the last segment is in the\n // buffer, end the stream. this ensures the \"ended\" event will\n // fire if playback reaches that point.\n\n if (this.isEndOfStream_(segmentInfo.mediaIndex, segmentInfo.playlist, segmentInfo.partIndex)) {\n this.endOfStream();\n } // used for testing\n\n this.trigger('appended');\n if (segmentInfo.hasAppendedData_) {\n this.mediaAppends++;\n }\n if (!this.paused()) {\n this.monitorBuffer_();\n }\n }\n /**\n * Records the current throughput of the decrypt, transmux, and append\n * portion of the semgment pipeline. `throughput.rate` is a the cumulative\n * moving average of the throughput. `throughput.count` is the number of\n * data points in the average.\n *\n * @private\n * @param {Object} segmentInfo the object returned by loadSegment\n */\n\n recordThroughput_(segmentInfo) {\n if (segmentInfo.duration < MIN_SEGMENT_DURATION_TO_SAVE_STATS) {\n this.logger_(`Ignoring segment's throughput because its duration of ${segmentInfo.duration}` + ` is less than the min to record ${MIN_SEGMENT_DURATION_TO_SAVE_STATS}`);\n return;\n }\n const rate = this.throughput.rate; // Add one to the time to ensure that we don't accidentally attempt to divide\n // by zero in the case where the throughput is ridiculously high\n\n const segmentProcessingTime = Date.now() - segmentInfo.endOfAllRequests + 1; // Multiply by 8000 to convert from bytes/millisecond to bits/second\n\n const segmentProcessingThroughput = Math.floor(segmentInfo.byteLength / segmentProcessingTime * 8 * 1000); // This is just a cumulative moving average calculation:\n // newAvg = oldAvg + (sample - oldAvg) / (sampleCount + 1)\n\n this.throughput.rate += (segmentProcessingThroughput - rate) / ++this.throughput.count;\n }\n /**\n * Adds a cue to the segment-metadata track with some metadata information about the\n * segment\n *\n * @private\n * @param {Object} segmentInfo\n * the object returned by loadSegment\n * @method addSegmentMetadataCue_\n */\n\n addSegmentMetadataCue_(segmentInfo) {\n if (!this.segmentMetadataTrack_) {\n return;\n }\n const segment = segmentInfo.segment;\n const start = segment.start;\n const end = segment.end; // Do not try adding the cue if the start and end times are invalid.\n\n if (!finite(start) || !finite(end)) {\n return;\n }\n removeCuesFromTrack(start, end, this.segmentMetadataTrack_);\n const Cue = window$1.WebKitDataCue || window$1.VTTCue;\n const value = {\n custom: segment.custom,\n dateTimeObject: segment.dateTimeObject,\n dateTimeString: segment.dateTimeString,\n programDateTime: segment.programDateTime,\n bandwidth: segmentInfo.playlist.attributes.BANDWIDTH,\n resolution: segmentInfo.playlist.attributes.RESOLUTION,\n codecs: segmentInfo.playlist.attributes.CODECS,\n byteLength: segmentInfo.byteLength,\n uri: segmentInfo.uri,\n timeline: segmentInfo.timeline,\n playlist: segmentInfo.playlist.id,\n start,\n end\n };\n const data = JSON.stringify(value);\n const cue = new Cue(start, end, data); // Attach the metadata to the value property of the cue to keep consistency between\n // the differences of WebKitDataCue in safari and VTTCue in other browsers\n\n cue.value = value;\n this.segmentMetadataTrack_.addCue(cue);\n }\n /**\n * Public setter for defining the private replaceSegmentsUntil_ property, which\n * determines when we can return fetchAtBuffer to true if overwriting the buffer.\n *\n * @param {number} bufferedEnd the end of the buffered range to replace segments\n * until currentTime reaches this time.\n */\n\n set replaceSegmentsUntil(bufferedEnd) {\n this.logger_(`Replacing currently buffered segments until ${bufferedEnd}`);\n this.replaceSegmentsUntil_ = bufferedEnd;\n }\n}\nfunction noop() {}\nconst toTitleCase = function (string) {\n if (typeof string !== 'string') {\n return string;\n }\n return string.replace(/./, w => w.toUpperCase());\n};\n\n/**\n * @file source-updater.js\n */\nconst bufferTypes = ['video', 'audio'];\nconst updating = (type, sourceUpdater) => {\n const sourceBuffer = sourceUpdater[`${type}Buffer`];\n return sourceBuffer && sourceBuffer.updating || sourceUpdater.queuePending[type];\n};\nconst nextQueueIndexOfType = (type, queue) => {\n for (let i = 0; i < queue.length; i++) {\n const queueEntry = queue[i];\n if (queueEntry.type === 'mediaSource') {\n // If the next entry is a media source entry (uses multiple source buffers), block\n // processing to allow it to go through first.\n return null;\n }\n if (queueEntry.type === type) {\n return i;\n }\n }\n return null;\n};\nconst shiftQueue = (type, sourceUpdater) => {\n if (sourceUpdater.queue.length === 0) {\n return;\n }\n let queueIndex = 0;\n let queueEntry = sourceUpdater.queue[queueIndex];\n if (queueEntry.type === 'mediaSource') {\n if (!sourceUpdater.updating() && sourceUpdater.mediaSource.readyState !== 'closed') {\n sourceUpdater.queue.shift();\n queueEntry.action(sourceUpdater);\n if (queueEntry.doneFn) {\n queueEntry.doneFn();\n } // Only specific source buffer actions must wait for async updateend events. Media\n // Source actions process synchronously. Therefore, both audio and video source\n // buffers are now clear to process the next queue entries.\n\n shiftQueue('audio', sourceUpdater);\n shiftQueue('video', sourceUpdater);\n } // Media Source actions require both source buffers, so if the media source action\n // couldn't process yet (because one or both source buffers are busy), block other\n // queue actions until both are available and the media source action can process.\n\n return;\n }\n if (type === 'mediaSource') {\n // If the queue was shifted by a media source action (this happens when pushing a\n // media source action onto the queue), then it wasn't from an updateend event from an\n // audio or video source buffer, so there's no change from previous state, and no\n // processing should be done.\n return;\n } // Media source queue entries don't need to consider whether the source updater is\n // started (i.e., source buffers are created) as they don't need the source buffers, but\n // source buffer queue entries do.\n\n if (!sourceUpdater.ready() || sourceUpdater.mediaSource.readyState === 'closed' || updating(type, sourceUpdater)) {\n return;\n }\n if (queueEntry.type !== type) {\n queueIndex = nextQueueIndexOfType(type, sourceUpdater.queue);\n if (queueIndex === null) {\n // Either there's no queue entry that uses this source buffer type in the queue, or\n // there's a media source queue entry before the next entry of this type, in which\n // case wait for that action to process first.\n return;\n }\n queueEntry = sourceUpdater.queue[queueIndex];\n }\n sourceUpdater.queue.splice(queueIndex, 1); // Keep a record that this source buffer type is in use.\n //\n // The queue pending operation must be set before the action is performed in the event\n // that the action results in a synchronous event that is acted upon. For instance, if\n // an exception is thrown that can be handled, it's possible that new actions will be\n // appended to an empty queue and immediately executed, but would not have the correct\n // pending information if this property was set after the action was performed.\n\n sourceUpdater.queuePending[type] = queueEntry;\n queueEntry.action(type, sourceUpdater);\n if (!queueEntry.doneFn) {\n // synchronous operation, process next entry\n sourceUpdater.queuePending[type] = null;\n shiftQueue(type, sourceUpdater);\n return;\n }\n};\nconst cleanupBuffer = (type, sourceUpdater) => {\n const buffer = sourceUpdater[`${type}Buffer`];\n const titleType = toTitleCase(type);\n if (!buffer) {\n return;\n }\n buffer.removeEventListener('updateend', sourceUpdater[`on${titleType}UpdateEnd_`]);\n buffer.removeEventListener('error', sourceUpdater[`on${titleType}Error_`]);\n sourceUpdater.codecs[type] = null;\n sourceUpdater[`${type}Buffer`] = null;\n};\nconst inSourceBuffers = (mediaSource, sourceBuffer) => mediaSource && sourceBuffer && Array.prototype.indexOf.call(mediaSource.sourceBuffers, sourceBuffer) !== -1;\nconst actions = {\n appendBuffer: (bytes, segmentInfo, onError) => (type, sourceUpdater) => {\n const sourceBuffer = sourceUpdater[`${type}Buffer`]; // can't do anything if the media source / source buffer is null\n // or the media source does not contain this source buffer.\n\n if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n return;\n }\n sourceUpdater.logger_(`Appending segment ${segmentInfo.mediaIndex}'s ${bytes.length} bytes to ${type}Buffer`);\n try {\n sourceBuffer.appendBuffer(bytes);\n } catch (e) {\n sourceUpdater.logger_(`Error with code ${e.code} ` + (e.code === QUOTA_EXCEEDED_ERR ? '(QUOTA_EXCEEDED_ERR) ' : '') + `when appending segment ${segmentInfo.mediaIndex} to ${type}Buffer`);\n sourceUpdater.queuePending[type] = null;\n onError(e);\n }\n },\n remove: (start, end) => (type, sourceUpdater) => {\n const sourceBuffer = sourceUpdater[`${type}Buffer`]; // can't do anything if the media source / source buffer is null\n // or the media source does not contain this source buffer.\n\n if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n return;\n }\n sourceUpdater.logger_(`Removing ${start} to ${end} from ${type}Buffer`);\n try {\n sourceBuffer.remove(start, end);\n } catch (e) {\n sourceUpdater.logger_(`Remove ${start} to ${end} from ${type}Buffer failed`);\n }\n },\n timestampOffset: offset => (type, sourceUpdater) => {\n const sourceBuffer = sourceUpdater[`${type}Buffer`]; // can't do anything if the media source / source buffer is null\n // or the media source does not contain this source buffer.\n\n if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n return;\n }\n sourceUpdater.logger_(`Setting ${type}timestampOffset to ${offset}`);\n sourceBuffer.timestampOffset = offset;\n },\n callback: callback => (type, sourceUpdater) => {\n callback();\n },\n endOfStream: error => sourceUpdater => {\n if (sourceUpdater.mediaSource.readyState !== 'open') {\n return;\n }\n sourceUpdater.logger_(`Calling mediaSource endOfStream(${error || ''})`);\n try {\n sourceUpdater.mediaSource.endOfStream(error);\n } catch (e) {\n videojs.log.warn('Failed to call media source endOfStream', e);\n }\n },\n duration: duration => sourceUpdater => {\n sourceUpdater.logger_(`Setting mediaSource duration to ${duration}`);\n try {\n sourceUpdater.mediaSource.duration = duration;\n } catch (e) {\n videojs.log.warn('Failed to set media source duration', e);\n }\n },\n abort: () => (type, sourceUpdater) => {\n if (sourceUpdater.mediaSource.readyState !== 'open') {\n return;\n }\n const sourceBuffer = sourceUpdater[`${type}Buffer`]; // can't do anything if the media source / source buffer is null\n // or the media source does not contain this source buffer.\n\n if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n return;\n }\n sourceUpdater.logger_(`calling abort on ${type}Buffer`);\n try {\n sourceBuffer.abort();\n } catch (e) {\n videojs.log.warn(`Failed to abort on ${type}Buffer`, e);\n }\n },\n addSourceBuffer: (type, codec) => sourceUpdater => {\n const titleType = toTitleCase(type);\n const mime = getMimeForCodec(codec);\n sourceUpdater.logger_(`Adding ${type}Buffer with codec ${codec} to mediaSource`);\n const sourceBuffer = sourceUpdater.mediaSource.addSourceBuffer(mime);\n sourceBuffer.addEventListener('updateend', sourceUpdater[`on${titleType}UpdateEnd_`]);\n sourceBuffer.addEventListener('error', sourceUpdater[`on${titleType}Error_`]);\n sourceUpdater.codecs[type] = codec;\n sourceUpdater[`${type}Buffer`] = sourceBuffer;\n },\n removeSourceBuffer: type => sourceUpdater => {\n const sourceBuffer = sourceUpdater[`${type}Buffer`];\n cleanupBuffer(type, sourceUpdater); // can't do anything if the media source / source buffer is null\n // or the media source does not contain this source buffer.\n\n if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n return;\n }\n sourceUpdater.logger_(`Removing ${type}Buffer with codec ${sourceUpdater.codecs[type]} from mediaSource`);\n try {\n sourceUpdater.mediaSource.removeSourceBuffer(sourceBuffer);\n } catch (e) {\n videojs.log.warn(`Failed to removeSourceBuffer ${type}Buffer`, e);\n }\n },\n changeType: codec => (type, sourceUpdater) => {\n const sourceBuffer = sourceUpdater[`${type}Buffer`];\n const mime = getMimeForCodec(codec); // can't do anything if the media source / source buffer is null\n // or the media source does not contain this source buffer.\n\n if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n return;\n } // do not update codec if we don't need to.\n\n if (sourceUpdater.codecs[type] === codec) {\n return;\n }\n sourceUpdater.logger_(`changing ${type}Buffer codec from ${sourceUpdater.codecs[type]} to ${codec}`);\n sourceBuffer.changeType(mime);\n sourceUpdater.codecs[type] = codec;\n }\n};\nconst pushQueue = ({\n type,\n sourceUpdater,\n action,\n doneFn,\n name\n}) => {\n sourceUpdater.queue.push({\n type,\n action,\n doneFn,\n name\n });\n shiftQueue(type, sourceUpdater);\n};\nconst onUpdateend = (type, sourceUpdater) => e => {\n const buffered = sourceUpdater[`${type}Buffered`]();\n const bufferedAsString = prettyBuffered(buffered);\n sourceUpdater.logger_(`${type} source buffer update end. Buffered: \\n`, bufferedAsString); // Although there should, in theory, be a pending action for any updateend receieved,\n // there are some actions that may trigger updateend events without set definitions in\n // the w3c spec. For instance, setting the duration on the media source may trigger\n // updateend events on source buffers. This does not appear to be in the spec. As such,\n // if we encounter an updateend without a corresponding pending action from our queue\n // for that source buffer type, process the next action.\n\n if (sourceUpdater.queuePending[type]) {\n const doneFn = sourceUpdater.queuePending[type].doneFn;\n sourceUpdater.queuePending[type] = null;\n if (doneFn) {\n // if there's an error, report it\n doneFn(sourceUpdater[`${type}Error_`]);\n }\n }\n shiftQueue(type, sourceUpdater);\n};\n/**\n * A queue of callbacks to be serialized and applied when a\n * MediaSource and its associated SourceBuffers are not in the\n * updating state. It is used by the segment loader to update the\n * underlying SourceBuffers when new data is loaded, for instance.\n *\n * @class SourceUpdater\n * @param {MediaSource} mediaSource the MediaSource to create the SourceBuffer from\n * @param {string} mimeType the desired MIME type of the underlying SourceBuffer\n */\n\nclass SourceUpdater extends videojs.EventTarget {\n constructor(mediaSource) {\n super();\n this.mediaSource = mediaSource;\n this.sourceopenListener_ = () => shiftQueue('mediaSource', this);\n this.mediaSource.addEventListener('sourceopen', this.sourceopenListener_);\n this.logger_ = logger('SourceUpdater'); // initial timestamp offset is 0\n\n this.audioTimestampOffset_ = 0;\n this.videoTimestampOffset_ = 0;\n this.queue = [];\n this.queuePending = {\n audio: null,\n video: null\n };\n this.delayedAudioAppendQueue_ = [];\n this.videoAppendQueued_ = false;\n this.codecs = {};\n this.onVideoUpdateEnd_ = onUpdateend('video', this);\n this.onAudioUpdateEnd_ = onUpdateend('audio', this);\n this.onVideoError_ = e => {\n // used for debugging\n this.videoError_ = e;\n };\n this.onAudioError_ = e => {\n // used for debugging\n this.audioError_ = e;\n };\n this.createdSourceBuffers_ = false;\n this.initializedEme_ = false;\n this.triggeredReady_ = false;\n }\n initializedEme() {\n this.initializedEme_ = true;\n this.triggerReady();\n }\n hasCreatedSourceBuffers() {\n // if false, likely waiting on one of the segment loaders to get enough data to create\n // source buffers\n return this.createdSourceBuffers_;\n }\n hasInitializedAnyEme() {\n return this.initializedEme_;\n }\n ready() {\n return this.hasCreatedSourceBuffers() && this.hasInitializedAnyEme();\n }\n createSourceBuffers(codecs) {\n if (this.hasCreatedSourceBuffers()) {\n // already created them before\n return;\n } // the intial addOrChangeSourceBuffers will always be\n // two add buffers.\n\n this.addOrChangeSourceBuffers(codecs);\n this.createdSourceBuffers_ = true;\n this.trigger('createdsourcebuffers');\n this.triggerReady();\n }\n triggerReady() {\n // only allow ready to be triggered once, this prevents the case\n // where:\n // 1. we trigger createdsourcebuffers\n // 2. ie 11 synchronously initializates eme\n // 3. the synchronous initialization causes us to trigger ready\n // 4. We go back to the ready check in createSourceBuffers and ready is triggered again.\n if (this.ready() && !this.triggeredReady_) {\n this.triggeredReady_ = true;\n this.trigger('ready');\n }\n }\n /**\n * Add a type of source buffer to the media source.\n *\n * @param {string} type\n * The type of source buffer to add.\n *\n * @param {string} codec\n * The codec to add the source buffer with.\n */\n\n addSourceBuffer(type, codec) {\n pushQueue({\n type: 'mediaSource',\n sourceUpdater: this,\n action: actions.addSourceBuffer(type, codec),\n name: 'addSourceBuffer'\n });\n }\n /**\n * call abort on a source buffer.\n *\n * @param {string} type\n * The type of source buffer to call abort on.\n */\n\n abort(type) {\n pushQueue({\n type,\n sourceUpdater: this,\n action: actions.abort(type),\n name: 'abort'\n });\n }\n /**\n * Call removeSourceBuffer and remove a specific type\n * of source buffer on the mediaSource.\n *\n * @param {string} type\n * The type of source buffer to remove.\n */\n\n removeSourceBuffer(type) {\n if (!this.canRemoveSourceBuffer()) {\n videojs.log.error('removeSourceBuffer is not supported!');\n return;\n }\n pushQueue({\n type: 'mediaSource',\n sourceUpdater: this,\n action: actions.removeSourceBuffer(type),\n name: 'removeSourceBuffer'\n });\n }\n /**\n * Whether or not the removeSourceBuffer function is supported\n * on the mediaSource.\n *\n * @return {boolean}\n * if removeSourceBuffer can be called.\n */\n\n canRemoveSourceBuffer() {\n // As of Firefox 83 removeSourceBuffer\n // throws errors, so we report that it does not support this.\n return !videojs.browser.IS_FIREFOX && window$1.MediaSource && window$1.MediaSource.prototype && typeof window$1.MediaSource.prototype.removeSourceBuffer === 'function';\n }\n /**\n * Whether or not the changeType function is supported\n * on our SourceBuffers.\n *\n * @return {boolean}\n * if changeType can be called.\n */\n\n static canChangeType() {\n return window$1.SourceBuffer && window$1.SourceBuffer.prototype && typeof window$1.SourceBuffer.prototype.changeType === 'function';\n }\n /**\n * Whether or not the changeType function is supported\n * on our SourceBuffers.\n *\n * @return {boolean}\n * if changeType can be called.\n */\n\n canChangeType() {\n return this.constructor.canChangeType();\n }\n /**\n * Call the changeType function on a source buffer, given the code and type.\n *\n * @param {string} type\n * The type of source buffer to call changeType on.\n *\n * @param {string} codec\n * The codec string to change type with on the source buffer.\n */\n\n changeType(type, codec) {\n if (!this.canChangeType()) {\n videojs.log.error('changeType is not supported!');\n return;\n }\n pushQueue({\n type,\n sourceUpdater: this,\n action: actions.changeType(codec),\n name: 'changeType'\n });\n }\n /**\n * Add source buffers with a codec or, if they are already created,\n * call changeType on source buffers using changeType.\n *\n * @param {Object} codecs\n * Codecs to switch to\n */\n\n addOrChangeSourceBuffers(codecs) {\n if (!codecs || typeof codecs !== 'object' || Object.keys(codecs).length === 0) {\n throw new Error('Cannot addOrChangeSourceBuffers to undefined codecs');\n }\n Object.keys(codecs).forEach(type => {\n const codec = codecs[type];\n if (!this.hasCreatedSourceBuffers()) {\n return this.addSourceBuffer(type, codec);\n }\n if (this.canChangeType()) {\n this.changeType(type, codec);\n }\n });\n }\n /**\n * Queue an update to append an ArrayBuffer.\n *\n * @param {MediaObject} object containing audioBytes and/or videoBytes\n * @param {Function} done the function to call when done\n * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-appendBuffer-void-ArrayBuffer-data\n */\n\n appendBuffer(options, doneFn) {\n const {\n segmentInfo,\n type,\n bytes\n } = options;\n this.processedAppend_ = true;\n if (type === 'audio' && this.videoBuffer && !this.videoAppendQueued_) {\n this.delayedAudioAppendQueue_.push([options, doneFn]);\n this.logger_(`delayed audio append of ${bytes.length} until video append`);\n return;\n } // In the case of certain errors, for instance, QUOTA_EXCEEDED_ERR, updateend will\n // not be fired. This means that the queue will be blocked until the next action\n // taken by the segment-loader. Provide a mechanism for segment-loader to handle\n // these errors by calling the doneFn with the specific error.\n\n const onError = doneFn;\n pushQueue({\n type,\n sourceUpdater: this,\n action: actions.appendBuffer(bytes, segmentInfo || {\n mediaIndex: -1\n }, onError),\n doneFn,\n name: 'appendBuffer'\n });\n if (type === 'video') {\n this.videoAppendQueued_ = true;\n if (!this.delayedAudioAppendQueue_.length) {\n return;\n }\n const queue = this.delayedAudioAppendQueue_.slice();\n this.logger_(`queuing delayed audio ${queue.length} appendBuffers`);\n this.delayedAudioAppendQueue_.length = 0;\n queue.forEach(que => {\n this.appendBuffer.apply(this, que);\n });\n }\n }\n /**\n * Get the audio buffer's buffered timerange.\n *\n * @return {TimeRange}\n * The audio buffer's buffered time range\n */\n\n audioBuffered() {\n // no media source/source buffer or it isn't in the media sources\n // source buffer list\n if (!inSourceBuffers(this.mediaSource, this.audioBuffer)) {\n return createTimeRanges();\n }\n return this.audioBuffer.buffered ? this.audioBuffer.buffered : createTimeRanges();\n }\n /**\n * Get the video buffer's buffered timerange.\n *\n * @return {TimeRange}\n * The video buffer's buffered time range\n */\n\n videoBuffered() {\n // no media source/source buffer or it isn't in the media sources\n // source buffer list\n if (!inSourceBuffers(this.mediaSource, this.videoBuffer)) {\n return createTimeRanges();\n }\n return this.videoBuffer.buffered ? this.videoBuffer.buffered : createTimeRanges();\n }\n /**\n * Get a combined video/audio buffer's buffered timerange.\n *\n * @return {TimeRange}\n * the combined time range\n */\n\n buffered() {\n const video = inSourceBuffers(this.mediaSource, this.videoBuffer) ? this.videoBuffer : null;\n const audio = inSourceBuffers(this.mediaSource, this.audioBuffer) ? this.audioBuffer : null;\n if (audio && !video) {\n return this.audioBuffered();\n }\n if (video && !audio) {\n return this.videoBuffered();\n }\n return bufferIntersection(this.audioBuffered(), this.videoBuffered());\n }\n /**\n * Add a callback to the queue that will set duration on the mediaSource.\n *\n * @param {number} duration\n * The duration to set\n *\n * @param {Function} [doneFn]\n * function to run after duration has been set.\n */\n\n setDuration(duration, doneFn = noop) {\n // In order to set the duration on the media source, it's necessary to wait for all\n // source buffers to no longer be updating. \"If the updating attribute equals true on\n // any SourceBuffer in sourceBuffers, then throw an InvalidStateError exception and\n // abort these steps.\" (source: https://www.w3.org/TR/media-source/#attributes).\n pushQueue({\n type: 'mediaSource',\n sourceUpdater: this,\n action: actions.duration(duration),\n name: 'duration',\n doneFn\n });\n }\n /**\n * Add a mediaSource endOfStream call to the queue\n *\n * @param {Error} [error]\n * Call endOfStream with an error\n *\n * @param {Function} [doneFn]\n * A function that should be called when the\n * endOfStream call has finished.\n */\n\n endOfStream(error = null, doneFn = noop) {\n if (typeof error !== 'string') {\n error = undefined;\n } // In order to set the duration on the media source, it's necessary to wait for all\n // source buffers to no longer be updating. \"If the updating attribute equals true on\n // any SourceBuffer in sourceBuffers, then throw an InvalidStateError exception and\n // abort these steps.\" (source: https://www.w3.org/TR/media-source/#attributes).\n\n pushQueue({\n type: 'mediaSource',\n sourceUpdater: this,\n action: actions.endOfStream(error),\n name: 'endOfStream',\n doneFn\n });\n }\n /**\n * Queue an update to remove a time range from the buffer.\n *\n * @param {number} start where to start the removal\n * @param {number} end where to end the removal\n * @param {Function} [done=noop] optional callback to be executed when the remove\n * operation is complete\n * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-remove-void-double-start-unrestricted-double-end\n */\n\n removeAudio(start, end, done = noop) {\n if (!this.audioBuffered().length || this.audioBuffered().end(0) === 0) {\n done();\n return;\n }\n pushQueue({\n type: 'audio',\n sourceUpdater: this,\n action: actions.remove(start, end),\n doneFn: done,\n name: 'remove'\n });\n }\n /**\n * Queue an update to remove a time range from the buffer.\n *\n * @param {number} start where to start the removal\n * @param {number} end where to end the removal\n * @param {Function} [done=noop] optional callback to be executed when the remove\n * operation is complete\n * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-remove-void-double-start-unrestricted-double-end\n */\n\n removeVideo(start, end, done = noop) {\n if (!this.videoBuffered().length || this.videoBuffered().end(0) === 0) {\n done();\n return;\n }\n pushQueue({\n type: 'video',\n sourceUpdater: this,\n action: actions.remove(start, end),\n doneFn: done,\n name: 'remove'\n });\n }\n /**\n * Whether the underlying sourceBuffer is updating or not\n *\n * @return {boolean} the updating status of the SourceBuffer\n */\n\n updating() {\n // the audio/video source buffer is updating\n if (updating('audio', this) || updating('video', this)) {\n return true;\n }\n return false;\n }\n /**\n * Set/get the timestampoffset on the audio SourceBuffer\n *\n * @return {number} the timestamp offset\n */\n\n audioTimestampOffset(offset) {\n if (typeof offset !== 'undefined' && this.audioBuffer &&\n // no point in updating if it's the same\n this.audioTimestampOffset_ !== offset) {\n pushQueue({\n type: 'audio',\n sourceUpdater: this,\n action: actions.timestampOffset(offset),\n name: 'timestampOffset'\n });\n this.audioTimestampOffset_ = offset;\n }\n return this.audioTimestampOffset_;\n }\n /**\n * Set/get the timestampoffset on the video SourceBuffer\n *\n * @return {number} the timestamp offset\n */\n\n videoTimestampOffset(offset) {\n if (typeof offset !== 'undefined' && this.videoBuffer &&\n // no point in updating if it's the same\n this.videoTimestampOffset !== offset) {\n pushQueue({\n type: 'video',\n sourceUpdater: this,\n action: actions.timestampOffset(offset),\n name: 'timestampOffset'\n });\n this.videoTimestampOffset_ = offset;\n }\n return this.videoTimestampOffset_;\n }\n /**\n * Add a function to the queue that will be called\n * when it is its turn to run in the audio queue.\n *\n * @param {Function} callback\n * The callback to queue.\n */\n\n audioQueueCallback(callback) {\n if (!this.audioBuffer) {\n return;\n }\n pushQueue({\n type: 'audio',\n sourceUpdater: this,\n action: actions.callback(callback),\n name: 'callback'\n });\n }\n /**\n * Add a function to the queue that will be called\n * when it is its turn to run in the video queue.\n *\n * @param {Function} callback\n * The callback to queue.\n */\n\n videoQueueCallback(callback) {\n if (!this.videoBuffer) {\n return;\n }\n pushQueue({\n type: 'video',\n sourceUpdater: this,\n action: actions.callback(callback),\n name: 'callback'\n });\n }\n /**\n * dispose of the source updater and the underlying sourceBuffer\n */\n\n dispose() {\n this.trigger('dispose');\n bufferTypes.forEach(type => {\n this.abort(type);\n if (this.canRemoveSourceBuffer()) {\n this.removeSourceBuffer(type);\n } else {\n this[`${type}QueueCallback`](() => cleanupBuffer(type, this));\n }\n });\n this.videoAppendQueued_ = false;\n this.delayedAudioAppendQueue_.length = 0;\n if (this.sourceopenListener_) {\n this.mediaSource.removeEventListener('sourceopen', this.sourceopenListener_);\n }\n this.off();\n }\n}\nconst uint8ToUtf8 = uintArray => decodeURIComponent(escape(String.fromCharCode.apply(null, uintArray)));\n\n/**\n * @file vtt-segment-loader.js\n */\nconst VTT_LINE_TERMINATORS = new Uint8Array('\\n\\n'.split('').map(char => char.charCodeAt(0)));\nclass NoVttJsError extends Error {\n constructor() {\n super('Trying to parse received VTT cues, but there is no WebVTT. Make sure vtt.js is loaded.');\n }\n}\n/**\n * An object that manages segment loading and appending.\n *\n * @class VTTSegmentLoader\n * @param {Object} options required and optional options\n * @extends videojs.EventTarget\n */\n\nclass VTTSegmentLoader extends SegmentLoader {\n constructor(settings, options = {}) {\n super(settings, options); // SegmentLoader requires a MediaSource be specified or it will throw an error;\n // however, VTTSegmentLoader has no need of a media source, so delete the reference\n\n this.mediaSource_ = null;\n this.subtitlesTrack_ = null;\n this.loaderType_ = 'subtitle';\n this.featuresNativeTextTracks_ = settings.featuresNativeTextTracks;\n this.loadVttJs = settings.loadVttJs; // The VTT segment will have its own time mappings. Saving VTT segment timing info in\n // the sync controller leads to improper behavior.\n\n this.shouldSaveSegmentTimingInfo_ = false;\n }\n createTransmuxer_() {\n // don't need to transmux any subtitles\n return null;\n }\n /**\n * Indicates which time ranges are buffered\n *\n * @return {TimeRange}\n * TimeRange object representing the current buffered ranges\n */\n\n buffered_() {\n if (!this.subtitlesTrack_ || !this.subtitlesTrack_.cues || !this.subtitlesTrack_.cues.length) {\n return createTimeRanges();\n }\n const cues = this.subtitlesTrack_.cues;\n const start = cues[0].startTime;\n const end = cues[cues.length - 1].startTime;\n return createTimeRanges([[start, end]]);\n }\n /**\n * Gets and sets init segment for the provided map\n *\n * @param {Object} map\n * The map object representing the init segment to get or set\n * @param {boolean=} set\n * If true, the init segment for the provided map should be saved\n * @return {Object}\n * map object for desired init segment\n */\n\n initSegmentForMap(map, set = false) {\n if (!map) {\n return null;\n }\n const id = initSegmentId(map);\n let storedMap = this.initSegments_[id];\n if (set && !storedMap && map.bytes) {\n // append WebVTT line terminators to the media initialization segment if it exists\n // to follow the WebVTT spec (https://w3c.github.io/webvtt/#file-structure) that\n // requires two or more WebVTT line terminators between the WebVTT header and the\n // rest of the file\n const combinedByteLength = VTT_LINE_TERMINATORS.byteLength + map.bytes.byteLength;\n const combinedSegment = new Uint8Array(combinedByteLength);\n combinedSegment.set(map.bytes);\n combinedSegment.set(VTT_LINE_TERMINATORS, map.bytes.byteLength);\n this.initSegments_[id] = storedMap = {\n resolvedUri: map.resolvedUri,\n byterange: map.byterange,\n bytes: combinedSegment\n };\n }\n return storedMap || map;\n }\n /**\n * Returns true if all configuration required for loading is present, otherwise false.\n *\n * @return {boolean} True if the all configuration is ready for loading\n * @private\n */\n\n couldBeginLoading_() {\n return this.playlist_ && this.subtitlesTrack_ && !this.paused();\n }\n /**\n * Once all the starting parameters have been specified, begin\n * operation. This method should only be invoked from the INIT\n * state.\n *\n * @private\n */\n\n init_() {\n this.state = 'READY';\n this.resetEverything();\n return this.monitorBuffer_();\n }\n /**\n * Set a subtitle track on the segment loader to add subtitles to\n *\n * @param {TextTrack=} track\n * The text track to add loaded subtitles to\n * @return {TextTrack}\n * Returns the subtitles track\n */\n\n track(track) {\n if (typeof track === 'undefined') {\n return this.subtitlesTrack_;\n }\n this.subtitlesTrack_ = track; // if we were unpaused but waiting for a sourceUpdater, start\n // buffering now\n\n if (this.state === 'INIT' && this.couldBeginLoading_()) {\n this.init_();\n }\n return this.subtitlesTrack_;\n }\n /**\n * Remove any data in the source buffer between start and end times\n *\n * @param {number} start - the start time of the region to remove from the buffer\n * @param {number} end - the end time of the region to remove from the buffer\n */\n\n remove(start, end) {\n removeCuesFromTrack(start, end, this.subtitlesTrack_);\n }\n /**\n * fill the buffer with segements unless the sourceBuffers are\n * currently updating\n *\n * Note: this function should only ever be called by monitorBuffer_\n * and never directly\n *\n * @private\n */\n\n fillBuffer_() {\n // see if we need to begin loading immediately\n const segmentInfo = this.chooseNextRequest_();\n if (!segmentInfo) {\n return;\n }\n if (this.syncController_.timestampOffsetForTimeline(segmentInfo.timeline) === null) {\n // We don't have the timestamp offset that we need to sync subtitles.\n // Rerun on a timestamp offset or user interaction.\n const checkTimestampOffset = () => {\n this.state = 'READY';\n if (!this.paused()) {\n // if not paused, queue a buffer check as soon as possible\n this.monitorBuffer_();\n }\n };\n this.syncController_.one('timestampoffset', checkTimestampOffset);\n this.state = 'WAITING_ON_TIMELINE';\n return;\n }\n this.loadSegment_(segmentInfo);\n } // never set a timestamp offset for vtt segments.\n\n timestampOffsetForSegment_() {\n return null;\n }\n chooseNextRequest_() {\n return this.skipEmptySegments_(super.chooseNextRequest_());\n }\n /**\n * Prevents the segment loader from requesting segments we know contain no subtitles\n * by walking forward until we find the next segment that we don't know whether it is\n * empty or not.\n *\n * @param {Object} segmentInfo\n * a segment info object that describes the current segment\n * @return {Object}\n * a segment info object that describes the current segment\n */\n\n skipEmptySegments_(segmentInfo) {\n while (segmentInfo && segmentInfo.segment.empty) {\n // stop at the last possible segmentInfo\n if (segmentInfo.mediaIndex + 1 >= segmentInfo.playlist.segments.length) {\n segmentInfo = null;\n break;\n }\n segmentInfo = this.generateSegmentInfo_({\n playlist: segmentInfo.playlist,\n mediaIndex: segmentInfo.mediaIndex + 1,\n startOfSegment: segmentInfo.startOfSegment + segmentInfo.duration,\n isSyncRequest: segmentInfo.isSyncRequest\n });\n }\n return segmentInfo;\n }\n stopForError(error) {\n this.error(error);\n this.state = 'READY';\n this.pause();\n this.trigger('error');\n }\n /**\n * append a decrypted segement to the SourceBuffer through a SourceUpdater\n *\n * @private\n */\n\n segmentRequestFinished_(error, simpleSegment, result) {\n if (!this.subtitlesTrack_) {\n this.state = 'READY';\n return;\n }\n this.saveTransferStats_(simpleSegment.stats); // the request was aborted\n\n if (!this.pendingSegment_) {\n this.state = 'READY';\n this.mediaRequestsAborted += 1;\n return;\n }\n if (error) {\n if (error.code === REQUEST_ERRORS.TIMEOUT) {\n this.handleTimeout_();\n }\n if (error.code === REQUEST_ERRORS.ABORTED) {\n this.mediaRequestsAborted += 1;\n } else {\n this.mediaRequestsErrored += 1;\n }\n this.stopForError(error);\n return;\n }\n const segmentInfo = this.pendingSegment_; // although the VTT segment loader bandwidth isn't really used, it's good to\n // maintain functionality between segment loaders\n\n this.saveBandwidthRelatedStats_(segmentInfo.duration, simpleSegment.stats); // if this request included a segment key, save that data in the cache\n\n if (simpleSegment.key) {\n this.segmentKey(simpleSegment.key, true);\n }\n this.state = 'APPENDING'; // used for tests\n\n this.trigger('appending');\n const segment = segmentInfo.segment;\n if (segment.map) {\n segment.map.bytes = simpleSegment.map.bytes;\n }\n segmentInfo.bytes = simpleSegment.bytes; // Make sure that vttjs has loaded, otherwise, load it and wait till it finished loading\n\n if (typeof window$1.WebVTT !== 'function' && typeof this.loadVttJs === 'function') {\n this.state = 'WAITING_ON_VTTJS'; // should be fine to call multiple times\n // script will be loaded once but multiple listeners will be added to the queue, which is expected.\n\n this.loadVttJs().then(() => this.segmentRequestFinished_(error, simpleSegment, result), () => this.stopForError({\n message: 'Error loading vtt.js'\n }));\n return;\n }\n segment.requested = true;\n try {\n this.parseVTTCues_(segmentInfo);\n } catch (e) {\n this.stopForError({\n message: e.message\n });\n return;\n }\n this.updateTimeMapping_(segmentInfo, this.syncController_.timelines[segmentInfo.timeline], this.playlist_);\n if (segmentInfo.cues.length) {\n segmentInfo.timingInfo = {\n start: segmentInfo.cues[0].startTime,\n end: segmentInfo.cues[segmentInfo.cues.length - 1].endTime\n };\n } else {\n segmentInfo.timingInfo = {\n start: segmentInfo.startOfSegment,\n end: segmentInfo.startOfSegment + segmentInfo.duration\n };\n }\n if (segmentInfo.isSyncRequest) {\n this.trigger('syncinfoupdate');\n this.pendingSegment_ = null;\n this.state = 'READY';\n return;\n }\n segmentInfo.byteLength = segmentInfo.bytes.byteLength;\n this.mediaSecondsLoaded += segment.duration; // Create VTTCue instances for each cue in the new segment and add them to\n // the subtitle track\n\n segmentInfo.cues.forEach(cue => {\n this.subtitlesTrack_.addCue(this.featuresNativeTextTracks_ ? new window$1.VTTCue(cue.startTime, cue.endTime, cue.text) : cue);\n }); // Remove any duplicate cues from the subtitle track. The WebVTT spec allows\n // cues to have identical time-intervals, but if the text is also identical\n // we can safely assume it is a duplicate that can be removed (ex. when a cue\n // \"overlaps\" VTT segments)\n\n removeDuplicateCuesFromTrack(this.subtitlesTrack_);\n this.handleAppendsDone_();\n }\n handleData_() {// noop as we shouldn't be getting video/audio data captions\n // that we do not support here.\n }\n updateTimingInfoEnd_() {// noop\n }\n /**\n * Uses the WebVTT parser to parse the segment response\n *\n * @throws NoVttJsError\n *\n * @param {Object} segmentInfo\n * a segment info object that describes the current segment\n * @private\n */\n\n parseVTTCues_(segmentInfo) {\n let decoder;\n let decodeBytesToString = false;\n if (typeof window$1.WebVTT !== 'function') {\n // caller is responsible for exception handling.\n throw new NoVttJsError();\n }\n if (typeof window$1.TextDecoder === 'function') {\n decoder = new window$1.TextDecoder('utf8');\n } else {\n decoder = window$1.WebVTT.StringDecoder();\n decodeBytesToString = true;\n }\n const parser = new window$1.WebVTT.Parser(window$1, window$1.vttjs, decoder);\n segmentInfo.cues = [];\n segmentInfo.timestampmap = {\n MPEGTS: 0,\n LOCAL: 0\n };\n parser.oncue = segmentInfo.cues.push.bind(segmentInfo.cues);\n parser.ontimestampmap = map => {\n segmentInfo.timestampmap = map;\n };\n parser.onparsingerror = error => {\n videojs.log.warn('Error encountered when parsing cues: ' + error.message);\n };\n if (segmentInfo.segment.map) {\n let mapData = segmentInfo.segment.map.bytes;\n if (decodeBytesToString) {\n mapData = uint8ToUtf8(mapData);\n }\n parser.parse(mapData);\n }\n let segmentData = segmentInfo.bytes;\n if (decodeBytesToString) {\n segmentData = uint8ToUtf8(segmentData);\n }\n parser.parse(segmentData);\n parser.flush();\n }\n /**\n * Updates the start and end times of any cues parsed by the WebVTT parser using\n * the information parsed from the X-TIMESTAMP-MAP header and a TS to media time mapping\n * from the SyncController\n *\n * @param {Object} segmentInfo\n * a segment info object that describes the current segment\n * @param {Object} mappingObj\n * object containing a mapping from TS to media time\n * @param {Object} playlist\n * the playlist object containing the segment\n * @private\n */\n\n updateTimeMapping_(segmentInfo, mappingObj, playlist) {\n const segment = segmentInfo.segment;\n if (!mappingObj) {\n // If the sync controller does not have a mapping of TS to Media Time for the\n // timeline, then we don't have enough information to update the cue\n // start/end times\n return;\n }\n if (!segmentInfo.cues.length) {\n // If there are no cues, we also do not have enough information to figure out\n // segment timing. Mark that the segment contains no cues so we don't re-request\n // an empty segment.\n segment.empty = true;\n return;\n }\n const timestampmap = segmentInfo.timestampmap;\n const diff = timestampmap.MPEGTS / ONE_SECOND_IN_TS - timestampmap.LOCAL + mappingObj.mapping;\n segmentInfo.cues.forEach(cue => {\n // First convert cue time to TS time using the timestamp-map provided within the vtt\n cue.startTime += diff;\n cue.endTime += diff;\n });\n if (!playlist.syncInfo) {\n const firstStart = segmentInfo.cues[0].startTime;\n const lastStart = segmentInfo.cues[segmentInfo.cues.length - 1].startTime;\n playlist.syncInfo = {\n mediaSequence: playlist.mediaSequence + segmentInfo.mediaIndex,\n time: Math.min(firstStart, lastStart - segment.duration)\n };\n }\n }\n}\n\n/**\n * @file ad-cue-tags.js\n */\n/**\n * Searches for an ad cue that overlaps with the given mediaTime\n *\n * @param {Object} track\n * the track to find the cue for\n *\n * @param {number} mediaTime\n * the time to find the cue at\n *\n * @return {Object|null}\n * the found cue or null\n */\n\nconst findAdCue = function (track, mediaTime) {\n const cues = track.cues;\n for (let i = 0; i < cues.length; i++) {\n const cue = cues[i];\n if (mediaTime >= cue.adStartTime && mediaTime <= cue.adEndTime) {\n return cue;\n }\n }\n return null;\n};\nconst updateAdCues = function (media, track, offset = 0) {\n if (!media.segments) {\n return;\n }\n let mediaTime = offset;\n let cue;\n for (let i = 0; i < media.segments.length; i++) {\n const segment = media.segments[i];\n if (!cue) {\n // Since the cues will span for at least the segment duration, adding a fudge\n // factor of half segment duration will prevent duplicate cues from being\n // created when timing info is not exact (e.g. cue start time initialized\n // at 10.006677, but next call mediaTime is 10.003332 )\n cue = findAdCue(track, mediaTime + segment.duration / 2);\n }\n if (cue) {\n if ('cueIn' in segment) {\n // Found a CUE-IN so end the cue\n cue.endTime = mediaTime;\n cue.adEndTime = mediaTime;\n mediaTime += segment.duration;\n cue = null;\n continue;\n }\n if (mediaTime < cue.endTime) {\n // Already processed this mediaTime for this cue\n mediaTime += segment.duration;\n continue;\n } // otherwise extend cue until a CUE-IN is found\n\n cue.endTime += segment.duration;\n } else {\n if ('cueOut' in segment) {\n cue = new window$1.VTTCue(mediaTime, mediaTime + segment.duration, segment.cueOut);\n cue.adStartTime = mediaTime; // Assumes tag format to be\n // #EXT-X-CUE-OUT:30\n\n cue.adEndTime = mediaTime + parseFloat(segment.cueOut);\n track.addCue(cue);\n }\n if ('cueOutCont' in segment) {\n // Entered into the middle of an ad cue\n // Assumes tag formate to be\n // #EXT-X-CUE-OUT-CONT:10/30\n const [adOffset, adTotal] = segment.cueOutCont.split('/').map(parseFloat);\n cue = new window$1.VTTCue(mediaTime, mediaTime + segment.duration, '');\n cue.adStartTime = mediaTime - adOffset;\n cue.adEndTime = cue.adStartTime + adTotal;\n track.addCue(cue);\n }\n }\n mediaTime += segment.duration;\n }\n};\n\n/**\n * @file sync-controller.js\n */\n// synchronize expired playlist segments.\n// the max media sequence diff is 48 hours of live stream\n// content with two second segments. Anything larger than that\n// will likely be invalid.\n\nconst MAX_MEDIA_SEQUENCE_DIFF_FOR_SYNC = 86400;\nconst syncPointStrategies = [\n// Stategy \"VOD\": Handle the VOD-case where the sync-point is *always*\n// the equivalence display-time 0 === segment-index 0\n{\n name: 'VOD',\n run: (syncController, playlist, duration, currentTimeline, currentTime) => {\n if (duration !== Infinity) {\n const syncPoint = {\n time: 0,\n segmentIndex: 0,\n partIndex: null\n };\n return syncPoint;\n }\n return null;\n }\n},\n// Stategy \"ProgramDateTime\": We have a program-date-time tag in this playlist\n{\n name: 'ProgramDateTime',\n run: (syncController, playlist, duration, currentTimeline, currentTime) => {\n if (!Object.keys(syncController.timelineToDatetimeMappings).length) {\n return null;\n }\n let syncPoint = null;\n let lastDistance = null;\n const partsAndSegments = getPartsAndSegments(playlist);\n currentTime = currentTime || 0;\n for (let i = 0; i < partsAndSegments.length; i++) {\n // start from the end and loop backwards for live\n // or start from the front and loop forwards for non-live\n const index = playlist.endList || currentTime === 0 ? i : partsAndSegments.length - (i + 1);\n const partAndSegment = partsAndSegments[index];\n const segment = partAndSegment.segment;\n const datetimeMapping = syncController.timelineToDatetimeMappings[segment.timeline];\n if (!datetimeMapping || !segment.dateTimeObject) {\n continue;\n }\n const segmentTime = segment.dateTimeObject.getTime() / 1000;\n let start = segmentTime + datetimeMapping; // take part duration into account.\n\n if (segment.parts && typeof partAndSegment.partIndex === 'number') {\n for (let z = 0; z < partAndSegment.partIndex; z++) {\n start += segment.parts[z].duration;\n }\n }\n const distance = Math.abs(currentTime - start); // Once the distance begins to increase, or if distance is 0, we have passed\n // currentTime and can stop looking for better candidates\n\n if (lastDistance !== null && (distance === 0 || lastDistance < distance)) {\n break;\n }\n lastDistance = distance;\n syncPoint = {\n time: start,\n segmentIndex: partAndSegment.segmentIndex,\n partIndex: partAndSegment.partIndex\n };\n }\n return syncPoint;\n }\n},\n// Stategy \"Segment\": We have a known time mapping for a timeline and a\n// segment in the current timeline with timing data\n{\n name: 'Segment',\n run: (syncController, playlist, duration, currentTimeline, currentTime) => {\n let syncPoint = null;\n let lastDistance = null;\n currentTime = currentTime || 0;\n const partsAndSegments = getPartsAndSegments(playlist);\n for (let i = 0; i < partsAndSegments.length; i++) {\n // start from the end and loop backwards for live\n // or start from the front and loop forwards for non-live\n const index = playlist.endList || currentTime === 0 ? i : partsAndSegments.length - (i + 1);\n const partAndSegment = partsAndSegments[index];\n const segment = partAndSegment.segment;\n const start = partAndSegment.part && partAndSegment.part.start || segment && segment.start;\n if (segment.timeline === currentTimeline && typeof start !== 'undefined') {\n const distance = Math.abs(currentTime - start); // Once the distance begins to increase, we have passed\n // currentTime and can stop looking for better candidates\n\n if (lastDistance !== null && lastDistance < distance) {\n break;\n }\n if (!syncPoint || lastDistance === null || lastDistance >= distance) {\n lastDistance = distance;\n syncPoint = {\n time: start,\n segmentIndex: partAndSegment.segmentIndex,\n partIndex: partAndSegment.partIndex\n };\n }\n }\n }\n return syncPoint;\n }\n},\n// Stategy \"Discontinuity\": We have a discontinuity with a known\n// display-time\n{\n name: 'Discontinuity',\n run: (syncController, playlist, duration, currentTimeline, currentTime) => {\n let syncPoint = null;\n currentTime = currentTime || 0;\n if (playlist.discontinuityStarts && playlist.discontinuityStarts.length) {\n let lastDistance = null;\n for (let i = 0; i < playlist.discontinuityStarts.length; i++) {\n const segmentIndex = playlist.discontinuityStarts[i];\n const discontinuity = playlist.discontinuitySequence + i + 1;\n const discontinuitySync = syncController.discontinuities[discontinuity];\n if (discontinuitySync) {\n const distance = Math.abs(currentTime - discontinuitySync.time); // Once the distance begins to increase, we have passed\n // currentTime and can stop looking for better candidates\n\n if (lastDistance !== null && lastDistance < distance) {\n break;\n }\n if (!syncPoint || lastDistance === null || lastDistance >= distance) {\n lastDistance = distance;\n syncPoint = {\n time: discontinuitySync.time,\n segmentIndex,\n partIndex: null\n };\n }\n }\n }\n }\n return syncPoint;\n }\n},\n// Stategy \"Playlist\": We have a playlist with a known mapping of\n// segment index to display time\n{\n name: 'Playlist',\n run: (syncController, playlist, duration, currentTimeline, currentTime) => {\n if (playlist.syncInfo) {\n const syncPoint = {\n time: playlist.syncInfo.time,\n segmentIndex: playlist.syncInfo.mediaSequence - playlist.mediaSequence,\n partIndex: null\n };\n return syncPoint;\n }\n return null;\n }\n}];\nclass SyncController extends videojs.EventTarget {\n constructor(options = {}) {\n super(); // ...for synching across variants\n\n this.timelines = [];\n this.discontinuities = [];\n this.timelineToDatetimeMappings = {};\n this.logger_ = logger('SyncController');\n }\n /**\n * Find a sync-point for the playlist specified\n *\n * A sync-point is defined as a known mapping from display-time to\n * a segment-index in the current playlist.\n *\n * @param {Playlist} playlist\n * The playlist that needs a sync-point\n * @param {number} duration\n * Duration of the MediaSource (Infinite if playing a live source)\n * @param {number} currentTimeline\n * The last timeline from which a segment was loaded\n * @return {Object}\n * A sync-point object\n */\n\n getSyncPoint(playlist, duration, currentTimeline, currentTime) {\n const syncPoints = this.runStrategies_(playlist, duration, currentTimeline, currentTime);\n if (!syncPoints.length) {\n // Signal that we need to attempt to get a sync-point manually\n // by fetching a segment in the playlist and constructing\n // a sync-point from that information\n return null;\n } // Now find the sync-point that is closest to the currentTime because\n // that should result in the most accurate guess about which segment\n // to fetch\n\n return this.selectSyncPoint_(syncPoints, {\n key: 'time',\n value: currentTime\n });\n }\n /**\n * Calculate the amount of time that has expired off the playlist during playback\n *\n * @param {Playlist} playlist\n * Playlist object to calculate expired from\n * @param {number} duration\n * Duration of the MediaSource (Infinity if playling a live source)\n * @return {number|null}\n * The amount of time that has expired off the playlist during playback. Null\n * if no sync-points for the playlist can be found.\n */\n\n getExpiredTime(playlist, duration) {\n if (!playlist || !playlist.segments) {\n return null;\n }\n const syncPoints = this.runStrategies_(playlist, duration, playlist.discontinuitySequence, 0); // Without sync-points, there is not enough information to determine the expired time\n\n if (!syncPoints.length) {\n return null;\n }\n const syncPoint = this.selectSyncPoint_(syncPoints, {\n key: 'segmentIndex',\n value: 0\n }); // If the sync-point is beyond the start of the playlist, we want to subtract the\n // duration from index 0 to syncPoint.segmentIndex instead of adding.\n\n if (syncPoint.segmentIndex > 0) {\n syncPoint.time *= -1;\n }\n return Math.abs(syncPoint.time + sumDurations({\n defaultDuration: playlist.targetDuration,\n durationList: playlist.segments,\n startIndex: syncPoint.segmentIndex,\n endIndex: 0\n }));\n }\n /**\n * Runs each sync-point strategy and returns a list of sync-points returned by the\n * strategies\n *\n * @private\n * @param {Playlist} playlist\n * The playlist that needs a sync-point\n * @param {number} duration\n * Duration of the MediaSource (Infinity if playing a live source)\n * @param {number} currentTimeline\n * The last timeline from which a segment was loaded\n * @return {Array}\n * A list of sync-point objects\n */\n\n runStrategies_(playlist, duration, currentTimeline, currentTime) {\n const syncPoints = []; // Try to find a sync-point in by utilizing various strategies...\n\n for (let i = 0; i < syncPointStrategies.length; i++) {\n const strategy = syncPointStrategies[i];\n const syncPoint = strategy.run(this, playlist, duration, currentTimeline, currentTime);\n if (syncPoint) {\n syncPoint.strategy = strategy.name;\n syncPoints.push({\n strategy: strategy.name,\n syncPoint\n });\n }\n }\n return syncPoints;\n }\n /**\n * Selects the sync-point nearest the specified target\n *\n * @private\n * @param {Array} syncPoints\n * List of sync-points to select from\n * @param {Object} target\n * Object specifying the property and value we are targeting\n * @param {string} target.key\n * Specifies the property to target. Must be either 'time' or 'segmentIndex'\n * @param {number} target.value\n * The value to target for the specified key.\n * @return {Object}\n * The sync-point nearest the target\n */\n\n selectSyncPoint_(syncPoints, target) {\n let bestSyncPoint = syncPoints[0].syncPoint;\n let bestDistance = Math.abs(syncPoints[0].syncPoint[target.key] - target.value);\n let bestStrategy = syncPoints[0].strategy;\n for (let i = 1; i < syncPoints.length; i++) {\n const newDistance = Math.abs(syncPoints[i].syncPoint[target.key] - target.value);\n if (newDistance < bestDistance) {\n bestDistance = newDistance;\n bestSyncPoint = syncPoints[i].syncPoint;\n bestStrategy = syncPoints[i].strategy;\n }\n }\n this.logger_(`syncPoint for [${target.key}: ${target.value}] chosen with strategy` + ` [${bestStrategy}]: [time:${bestSyncPoint.time},` + ` segmentIndex:${bestSyncPoint.segmentIndex}` + (typeof bestSyncPoint.partIndex === 'number' ? `,partIndex:${bestSyncPoint.partIndex}` : '') + ']');\n return bestSyncPoint;\n }\n /**\n * Save any meta-data present on the segments when segments leave\n * the live window to the playlist to allow for synchronization at the\n * playlist level later.\n *\n * @param {Playlist} oldPlaylist - The previous active playlist\n * @param {Playlist} newPlaylist - The updated and most current playlist\n */\n\n saveExpiredSegmentInfo(oldPlaylist, newPlaylist) {\n const mediaSequenceDiff = newPlaylist.mediaSequence - oldPlaylist.mediaSequence; // Ignore large media sequence gaps\n\n if (mediaSequenceDiff > MAX_MEDIA_SEQUENCE_DIFF_FOR_SYNC) {\n videojs.log.warn(`Not saving expired segment info. Media sequence gap ${mediaSequenceDiff} is too large.`);\n return;\n } // When a segment expires from the playlist and it has a start time\n // save that information as a possible sync-point reference in future\n\n for (let i = mediaSequenceDiff - 1; i >= 0; i--) {\n const lastRemovedSegment = oldPlaylist.segments[i];\n if (lastRemovedSegment && typeof lastRemovedSegment.start !== 'undefined') {\n newPlaylist.syncInfo = {\n mediaSequence: oldPlaylist.mediaSequence + i,\n time: lastRemovedSegment.start\n };\n this.logger_(`playlist refresh sync: [time:${newPlaylist.syncInfo.time},` + ` mediaSequence: ${newPlaylist.syncInfo.mediaSequence}]`);\n this.trigger('syncinfoupdate');\n break;\n }\n }\n }\n /**\n * Save the mapping from playlist's ProgramDateTime to display. This should only happen\n * before segments start to load.\n *\n * @param {Playlist} playlist - The currently active playlist\n */\n\n setDateTimeMappingForStart(playlist) {\n // It's possible for the playlist to be updated before playback starts, meaning time\n // zero is not yet set. If, during these playlist refreshes, a discontinuity is\n // crossed, then the old time zero mapping (for the prior timeline) would be retained\n // unless the mappings are cleared.\n this.timelineToDatetimeMappings = {};\n if (playlist.segments && playlist.segments.length && playlist.segments[0].dateTimeObject) {\n const firstSegment = playlist.segments[0];\n const playlistTimestamp = firstSegment.dateTimeObject.getTime() / 1000;\n this.timelineToDatetimeMappings[firstSegment.timeline] = -playlistTimestamp;\n }\n }\n /**\n * Calculates and saves timeline mappings, playlist sync info, and segment timing values\n * based on the latest timing information.\n *\n * @param {Object} options\n * Options object\n * @param {SegmentInfo} options.segmentInfo\n * The current active request information\n * @param {boolean} options.shouldSaveTimelineMapping\n * If there's a timeline change, determines if the timeline mapping should be\n * saved for timeline mapping and program date time mappings.\n */\n\n saveSegmentTimingInfo({\n segmentInfo,\n shouldSaveTimelineMapping\n }) {\n const didCalculateSegmentTimeMapping = this.calculateSegmentTimeMapping_(segmentInfo, segmentInfo.timingInfo, shouldSaveTimelineMapping);\n const segment = segmentInfo.segment;\n if (didCalculateSegmentTimeMapping) {\n this.saveDiscontinuitySyncInfo_(segmentInfo); // If the playlist does not have sync information yet, record that information\n // now with segment timing information\n\n if (!segmentInfo.playlist.syncInfo) {\n segmentInfo.playlist.syncInfo = {\n mediaSequence: segmentInfo.playlist.mediaSequence + segmentInfo.mediaIndex,\n time: segment.start\n };\n }\n }\n const dateTime = segment.dateTimeObject;\n if (segment.discontinuity && shouldSaveTimelineMapping && dateTime) {\n this.timelineToDatetimeMappings[segment.timeline] = -(dateTime.getTime() / 1000);\n }\n }\n timestampOffsetForTimeline(timeline) {\n if (typeof this.timelines[timeline] === 'undefined') {\n return null;\n }\n return this.timelines[timeline].time;\n }\n mappingForTimeline(timeline) {\n if (typeof this.timelines[timeline] === 'undefined') {\n return null;\n }\n return this.timelines[timeline].mapping;\n }\n /**\n * Use the \"media time\" for a segment to generate a mapping to \"display time\" and\n * save that display time to the segment.\n *\n * @private\n * @param {SegmentInfo} segmentInfo\n * The current active request information\n * @param {Object} timingInfo\n * The start and end time of the current segment in \"media time\"\n * @param {boolean} shouldSaveTimelineMapping\n * If there's a timeline change, determines if the timeline mapping should be\n * saved in timelines.\n * @return {boolean}\n * Returns false if segment time mapping could not be calculated\n */\n\n calculateSegmentTimeMapping_(segmentInfo, timingInfo, shouldSaveTimelineMapping) {\n // TODO: remove side effects\n const segment = segmentInfo.segment;\n const part = segmentInfo.part;\n let mappingObj = this.timelines[segmentInfo.timeline];\n let start;\n let end;\n if (typeof segmentInfo.timestampOffset === 'number') {\n mappingObj = {\n time: segmentInfo.startOfSegment,\n mapping: segmentInfo.startOfSegment - timingInfo.start\n };\n if (shouldSaveTimelineMapping) {\n this.timelines[segmentInfo.timeline] = mappingObj;\n this.trigger('timestampoffset');\n this.logger_(`time mapping for timeline ${segmentInfo.timeline}: ` + `[time: ${mappingObj.time}] [mapping: ${mappingObj.mapping}]`);\n }\n start = segmentInfo.startOfSegment;\n end = timingInfo.end + mappingObj.mapping;\n } else if (mappingObj) {\n start = timingInfo.start + mappingObj.mapping;\n end = timingInfo.end + mappingObj.mapping;\n } else {\n return false;\n }\n if (part) {\n part.start = start;\n part.end = end;\n } // If we don't have a segment start yet or the start value we got\n // is less than our current segment.start value, save a new start value.\n // We have to do this because parts will have segment timing info saved\n // multiple times and we want segment start to be the earliest part start\n // value for that segment.\n\n if (!segment.start || start < segment.start) {\n segment.start = start;\n }\n segment.end = end;\n return true;\n }\n /**\n * Each time we have discontinuity in the playlist, attempt to calculate the location\n * in display of the start of the discontinuity and save that. We also save an accuracy\n * value so that we save values with the most accuracy (closest to 0.)\n *\n * @private\n * @param {SegmentInfo} segmentInfo - The current active request information\n */\n\n saveDiscontinuitySyncInfo_(segmentInfo) {\n const playlist = segmentInfo.playlist;\n const segment = segmentInfo.segment; // If the current segment is a discontinuity then we know exactly where\n // the start of the range and it's accuracy is 0 (greater accuracy values\n // mean more approximation)\n\n if (segment.discontinuity) {\n this.discontinuities[segment.timeline] = {\n time: segment.start,\n accuracy: 0\n };\n } else if (playlist.discontinuityStarts && playlist.discontinuityStarts.length) {\n // Search for future discontinuities that we can provide better timing\n // information for and save that information for sync purposes\n for (let i = 0; i < playlist.discontinuityStarts.length; i++) {\n const segmentIndex = playlist.discontinuityStarts[i];\n const discontinuity = playlist.discontinuitySequence + i + 1;\n const mediaIndexDiff = segmentIndex - segmentInfo.mediaIndex;\n const accuracy = Math.abs(mediaIndexDiff);\n if (!this.discontinuities[discontinuity] || this.discontinuities[discontinuity].accuracy > accuracy) {\n let time;\n if (mediaIndexDiff < 0) {\n time = segment.start - sumDurations({\n defaultDuration: playlist.targetDuration,\n durationList: playlist.segments,\n startIndex: segmentInfo.mediaIndex,\n endIndex: segmentIndex\n });\n } else {\n time = segment.end + sumDurations({\n defaultDuration: playlist.targetDuration,\n durationList: playlist.segments,\n startIndex: segmentInfo.mediaIndex + 1,\n endIndex: segmentIndex\n });\n }\n this.discontinuities[discontinuity] = {\n time,\n accuracy\n };\n }\n }\n }\n }\n dispose() {\n this.trigger('dispose');\n this.off();\n }\n}\n\n/**\n * The TimelineChangeController acts as a source for segment loaders to listen for and\n * keep track of latest and pending timeline changes. This is useful to ensure proper\n * sync, as each loader may need to make a consideration for what timeline the other\n * loader is on before making changes which could impact the other loader's media.\n *\n * @class TimelineChangeController\n * @extends videojs.EventTarget\n */\n\nclass TimelineChangeController extends videojs.EventTarget {\n constructor() {\n super();\n this.pendingTimelineChanges_ = {};\n this.lastTimelineChanges_ = {};\n }\n clearPendingTimelineChange(type) {\n this.pendingTimelineChanges_[type] = null;\n this.trigger('pendingtimelinechange');\n }\n pendingTimelineChange({\n type,\n from,\n to\n }) {\n if (typeof from === 'number' && typeof to === 'number') {\n this.pendingTimelineChanges_[type] = {\n type,\n from,\n to\n };\n this.trigger('pendingtimelinechange');\n }\n return this.pendingTimelineChanges_[type];\n }\n lastTimelineChange({\n type,\n from,\n to\n }) {\n if (typeof from === 'number' && typeof to === 'number') {\n this.lastTimelineChanges_[type] = {\n type,\n from,\n to\n };\n delete this.pendingTimelineChanges_[type];\n this.trigger('timelinechange');\n }\n return this.lastTimelineChanges_[type];\n }\n dispose() {\n this.trigger('dispose');\n this.pendingTimelineChanges_ = {};\n this.lastTimelineChanges_ = {};\n this.off();\n }\n}\n\n/* rollup-plugin-worker-factory start for worker!/home/runner/work/http-streaming/http-streaming/src/decrypter-worker.js */\nconst workerCode = transform(getWorkerString(function () {\n /**\n * @file stream.js\n */\n\n /**\n * A lightweight readable stream implemention that handles event dispatching.\n *\n * @class Stream\n */\n\n var Stream = /*#__PURE__*/function () {\n function Stream() {\n this.listeners = {};\n }\n /**\n * Add a listener for a specified event type.\n *\n * @param {string} type the event name\n * @param {Function} listener the callback to be invoked when an event of\n * the specified type occurs\n */\n\n var _proto = Stream.prototype;\n _proto.on = function on(type, listener) {\n if (!this.listeners[type]) {\n this.listeners[type] = [];\n }\n this.listeners[type].push(listener);\n }\n /**\n * Remove a listener for a specified event type.\n *\n * @param {string} type the event name\n * @param {Function} listener a function previously registered for this\n * type of event through `on`\n * @return {boolean} if we could turn it off or not\n */;\n\n _proto.off = function off(type, listener) {\n if (!this.listeners[type]) {\n return false;\n }\n var index = this.listeners[type].indexOf(listener); // TODO: which is better?\n // In Video.js we slice listener functions\n // on trigger so that it does not mess up the order\n // while we loop through.\n //\n // Here we slice on off so that the loop in trigger\n // can continue using it's old reference to loop without\n // messing up the order.\n\n this.listeners[type] = this.listeners[type].slice(0);\n this.listeners[type].splice(index, 1);\n return index > -1;\n }\n /**\n * Trigger an event of the specified type on this stream. Any additional\n * arguments to this function are passed as parameters to event listeners.\n *\n * @param {string} type the event name\n */;\n\n _proto.trigger = function trigger(type) {\n var callbacks = this.listeners[type];\n if (!callbacks) {\n return;\n } // Slicing the arguments on every invocation of this method\n // can add a significant amount of overhead. Avoid the\n // intermediate object creation for the common case of a\n // single callback argument\n\n if (arguments.length === 2) {\n var length = callbacks.length;\n for (var i = 0; i < length; ++i) {\n callbacks[i].call(this, arguments[1]);\n }\n } else {\n var args = Array.prototype.slice.call(arguments, 1);\n var _length = callbacks.length;\n for (var _i = 0; _i < _length; ++_i) {\n callbacks[_i].apply(this, args);\n }\n }\n }\n /**\n * Destroys the stream and cleans up.\n */;\n\n _proto.dispose = function dispose() {\n this.listeners = {};\n }\n /**\n * Forwards all `data` events on this stream to the destination stream. The\n * destination stream should provide a method `push` to receive the data\n * events as they arrive.\n *\n * @param {Stream} destination the stream that will receive all `data` events\n * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options\n */;\n\n _proto.pipe = function pipe(destination) {\n this.on('data', function (data) {\n destination.push(data);\n });\n };\n return Stream;\n }();\n /*! @name pkcs7 @version 1.0.4 @license Apache-2.0 */\n\n /**\n * Returns the subarray of a Uint8Array without PKCS#7 padding.\n *\n * @param padded {Uint8Array} unencrypted bytes that have been padded\n * @return {Uint8Array} the unpadded bytes\n * @see http://tools.ietf.org/html/rfc5652\n */\n\n function unpad(padded) {\n return padded.subarray(0, padded.byteLength - padded[padded.byteLength - 1]);\n }\n /*! @name aes-decrypter @version 4.0.1 @license Apache-2.0 */\n\n /**\n * @file aes.js\n *\n * This file contains an adaptation of the AES decryption algorithm\n * from the Standford Javascript Cryptography Library. That work is\n * covered by the following copyright and permissions notice:\n *\n * Copyright 2009-2010 Emily Stark, Mike Hamburg, Dan Boneh.\n * All rights reserved.\n *\n * Redistribution and use in source and binary forms, with or without\n * modification, are permitted provided that the following conditions are\n * met:\n *\n * 1. Redistributions of source code must retain the above copyright\n * notice, this list of conditions and the following disclaimer.\n *\n * 2. Redistributions in binary form must reproduce the above\n * copyright notice, this list of conditions and the following\n * disclaimer in the documentation and/or other materials provided\n * with the distribution.\n *\n * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR\n * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\n * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE\n * DISCLAIMED. IN NO EVENT SHALL OR CONTRIBUTORS BE\n * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR\n * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF\n * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR\n * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,\n * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE\n * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN\n * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n *\n * The views and conclusions contained in the software and documentation\n * are those of the authors and should not be interpreted as representing\n * official policies, either expressed or implied, of the authors.\n */\n\n /**\n * Expand the S-box tables.\n *\n * @private\n */\n\n const precompute = function () {\n const tables = [[[], [], [], [], []], [[], [], [], [], []]];\n const encTable = tables[0];\n const decTable = tables[1];\n const sbox = encTable[4];\n const sboxInv = decTable[4];\n let i;\n let x;\n let xInv;\n const d = [];\n const th = [];\n let x2;\n let x4;\n let x8;\n let s;\n let tEnc;\n let tDec; // Compute double and third tables\n\n for (i = 0; i < 256; i++) {\n th[(d[i] = i << 1 ^ (i >> 7) * 283) ^ i] = i;\n }\n for (x = xInv = 0; !sbox[x]; x ^= x2 || 1, xInv = th[xInv] || 1) {\n // Compute sbox\n s = xInv ^ xInv << 1 ^ xInv << 2 ^ xInv << 3 ^ xInv << 4;\n s = s >> 8 ^ s & 255 ^ 99;\n sbox[x] = s;\n sboxInv[s] = x; // Compute MixColumns\n\n x8 = d[x4 = d[x2 = d[x]]];\n tDec = x8 * 0x1010101 ^ x4 * 0x10001 ^ x2 * 0x101 ^ x * 0x1010100;\n tEnc = d[s] * 0x101 ^ s * 0x1010100;\n for (i = 0; i < 4; i++) {\n encTable[i][x] = tEnc = tEnc << 24 ^ tEnc >>> 8;\n decTable[i][s] = tDec = tDec << 24 ^ tDec >>> 8;\n }\n } // Compactify. Considerable speedup on Firefox.\n\n for (i = 0; i < 5; i++) {\n encTable[i] = encTable[i].slice(0);\n decTable[i] = decTable[i].slice(0);\n }\n return tables;\n };\n let aesTables = null;\n /**\n * Schedule out an AES key for both encryption and decryption. This\n * is a low-level class. Use a cipher mode to do bulk encryption.\n *\n * @class AES\n * @param key {Array} The key as an array of 4, 6 or 8 words.\n */\n\n class AES {\n constructor(key) {\n /**\n * The expanded S-box and inverse S-box tables. These will be computed\n * on the client so that we don't have to send them down the wire.\n *\n * There are two tables, _tables[0] is for encryption and\n * _tables[1] is for decryption.\n *\n * The first 4 sub-tables are the expanded S-box with MixColumns. The\n * last (_tables[01][4]) is the S-box itself.\n *\n * @private\n */\n // if we have yet to precompute the S-box tables\n // do so now\n if (!aesTables) {\n aesTables = precompute();\n } // then make a copy of that object for use\n\n this._tables = [[aesTables[0][0].slice(), aesTables[0][1].slice(), aesTables[0][2].slice(), aesTables[0][3].slice(), aesTables[0][4].slice()], [aesTables[1][0].slice(), aesTables[1][1].slice(), aesTables[1][2].slice(), aesTables[1][3].slice(), aesTables[1][4].slice()]];\n let i;\n let j;\n let tmp;\n const sbox = this._tables[0][4];\n const decTable = this._tables[1];\n const keyLen = key.length;\n let rcon = 1;\n if (keyLen !== 4 && keyLen !== 6 && keyLen !== 8) {\n throw new Error('Invalid aes key size');\n }\n const encKey = key.slice(0);\n const decKey = [];\n this._key = [encKey, decKey]; // schedule encryption keys\n\n for (i = keyLen; i < 4 * keyLen + 28; i++) {\n tmp = encKey[i - 1]; // apply sbox\n\n if (i % keyLen === 0 || keyLen === 8 && i % keyLen === 4) {\n tmp = sbox[tmp >>> 24] << 24 ^ sbox[tmp >> 16 & 255] << 16 ^ sbox[tmp >> 8 & 255] << 8 ^ sbox[tmp & 255]; // shift rows and add rcon\n\n if (i % keyLen === 0) {\n tmp = tmp << 8 ^ tmp >>> 24 ^ rcon << 24;\n rcon = rcon << 1 ^ (rcon >> 7) * 283;\n }\n }\n encKey[i] = encKey[i - keyLen] ^ tmp;\n } // schedule decryption keys\n\n for (j = 0; i; j++, i--) {\n tmp = encKey[j & 3 ? i : i - 4];\n if (i <= 4 || j < 4) {\n decKey[j] = tmp;\n } else {\n decKey[j] = decTable[0][sbox[tmp >>> 24]] ^ decTable[1][sbox[tmp >> 16 & 255]] ^ decTable[2][sbox[tmp >> 8 & 255]] ^ decTable[3][sbox[tmp & 255]];\n }\n }\n }\n /**\n * Decrypt 16 bytes, specified as four 32-bit words.\n *\n * @param {number} encrypted0 the first word to decrypt\n * @param {number} encrypted1 the second word to decrypt\n * @param {number} encrypted2 the third word to decrypt\n * @param {number} encrypted3 the fourth word to decrypt\n * @param {Int32Array} out the array to write the decrypted words\n * into\n * @param {number} offset the offset into the output array to start\n * writing results\n * @return {Array} The plaintext.\n */\n\n decrypt(encrypted0, encrypted1, encrypted2, encrypted3, out, offset) {\n const key = this._key[1]; // state variables a,b,c,d are loaded with pre-whitened data\n\n let a = encrypted0 ^ key[0];\n let b = encrypted3 ^ key[1];\n let c = encrypted2 ^ key[2];\n let d = encrypted1 ^ key[3];\n let a2;\n let b2;\n let c2; // key.length === 2 ?\n\n const nInnerRounds = key.length / 4 - 2;\n let i;\n let kIndex = 4;\n const table = this._tables[1]; // load up the tables\n\n const table0 = table[0];\n const table1 = table[1];\n const table2 = table[2];\n const table3 = table[3];\n const sbox = table[4]; // Inner rounds. Cribbed from OpenSSL.\n\n for (i = 0; i < nInnerRounds; i++) {\n a2 = table0[a >>> 24] ^ table1[b >> 16 & 255] ^ table2[c >> 8 & 255] ^ table3[d & 255] ^ key[kIndex];\n b2 = table0[b >>> 24] ^ table1[c >> 16 & 255] ^ table2[d >> 8 & 255] ^ table3[a & 255] ^ key[kIndex + 1];\n c2 = table0[c >>> 24] ^ table1[d >> 16 & 255] ^ table2[a >> 8 & 255] ^ table3[b & 255] ^ key[kIndex + 2];\n d = table0[d >>> 24] ^ table1[a >> 16 & 255] ^ table2[b >> 8 & 255] ^ table3[c & 255] ^ key[kIndex + 3];\n kIndex += 4;\n a = a2;\n b = b2;\n c = c2;\n } // Last round.\n\n for (i = 0; i < 4; i++) {\n out[(3 & -i) + offset] = sbox[a >>> 24] << 24 ^ sbox[b >> 16 & 255] << 16 ^ sbox[c >> 8 & 255] << 8 ^ sbox[d & 255] ^ key[kIndex++];\n a2 = a;\n a = b;\n b = c;\n c = d;\n d = a2;\n }\n }\n }\n /**\n * @file async-stream.js\n */\n\n /**\n * A wrapper around the Stream class to use setTimeout\n * and run stream \"jobs\" Asynchronously\n *\n * @class AsyncStream\n * @extends Stream\n */\n\n class AsyncStream extends Stream {\n constructor() {\n super(Stream);\n this.jobs = [];\n this.delay = 1;\n this.timeout_ = null;\n }\n /**\n * process an async job\n *\n * @private\n */\n\n processJob_() {\n this.jobs.shift()();\n if (this.jobs.length) {\n this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay);\n } else {\n this.timeout_ = null;\n }\n }\n /**\n * push a job into the stream\n *\n * @param {Function} job the job to push into the stream\n */\n\n push(job) {\n this.jobs.push(job);\n if (!this.timeout_) {\n this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay);\n }\n }\n }\n /**\n * @file decrypter.js\n *\n * An asynchronous implementation of AES-128 CBC decryption with\n * PKCS#7 padding.\n */\n\n /**\n * Convert network-order (big-endian) bytes into their little-endian\n * representation.\n */\n\n const ntoh = function (word) {\n return word << 24 | (word & 0xff00) << 8 | (word & 0xff0000) >> 8 | word >>> 24;\n };\n /**\n * Decrypt bytes using AES-128 with CBC and PKCS#7 padding.\n *\n * @param {Uint8Array} encrypted the encrypted bytes\n * @param {Uint32Array} key the bytes of the decryption key\n * @param {Uint32Array} initVector the initialization vector (IV) to\n * use for the first round of CBC.\n * @return {Uint8Array} the decrypted bytes\n *\n * @see http://en.wikipedia.org/wiki/Advanced_Encryption_Standard\n * @see http://en.wikipedia.org/wiki/Block_cipher_mode_of_operation#Cipher_Block_Chaining_.28CBC.29\n * @see https://tools.ietf.org/html/rfc2315\n */\n\n const decrypt = function (encrypted, key, initVector) {\n // word-level access to the encrypted bytes\n const encrypted32 = new Int32Array(encrypted.buffer, encrypted.byteOffset, encrypted.byteLength >> 2);\n const decipher = new AES(Array.prototype.slice.call(key)); // byte and word-level access for the decrypted output\n\n const decrypted = new Uint8Array(encrypted.byteLength);\n const decrypted32 = new Int32Array(decrypted.buffer); // temporary variables for working with the IV, encrypted, and\n // decrypted data\n\n let init0;\n let init1;\n let init2;\n let init3;\n let encrypted0;\n let encrypted1;\n let encrypted2;\n let encrypted3; // iteration variable\n\n let wordIx; // pull out the words of the IV to ensure we don't modify the\n // passed-in reference and easier access\n\n init0 = initVector[0];\n init1 = initVector[1];\n init2 = initVector[2];\n init3 = initVector[3]; // decrypt four word sequences, applying cipher-block chaining (CBC)\n // to each decrypted block\n\n for (wordIx = 0; wordIx < encrypted32.length; wordIx += 4) {\n // convert big-endian (network order) words into little-endian\n // (javascript order)\n encrypted0 = ntoh(encrypted32[wordIx]);\n encrypted1 = ntoh(encrypted32[wordIx + 1]);\n encrypted2 = ntoh(encrypted32[wordIx + 2]);\n encrypted3 = ntoh(encrypted32[wordIx + 3]); // decrypt the block\n\n decipher.decrypt(encrypted0, encrypted1, encrypted2, encrypted3, decrypted32, wordIx); // XOR with the IV, and restore network byte-order to obtain the\n // plaintext\n\n decrypted32[wordIx] = ntoh(decrypted32[wordIx] ^ init0);\n decrypted32[wordIx + 1] = ntoh(decrypted32[wordIx + 1] ^ init1);\n decrypted32[wordIx + 2] = ntoh(decrypted32[wordIx + 2] ^ init2);\n decrypted32[wordIx + 3] = ntoh(decrypted32[wordIx + 3] ^ init3); // setup the IV for the next round\n\n init0 = encrypted0;\n init1 = encrypted1;\n init2 = encrypted2;\n init3 = encrypted3;\n }\n return decrypted;\n };\n /**\n * The `Decrypter` class that manages decryption of AES\n * data through `AsyncStream` objects and the `decrypt`\n * function\n *\n * @param {Uint8Array} encrypted the encrypted bytes\n * @param {Uint32Array} key the bytes of the decryption key\n * @param {Uint32Array} initVector the initialization vector (IV) to\n * @param {Function} done the function to run when done\n * @class Decrypter\n */\n\n class Decrypter {\n constructor(encrypted, key, initVector, done) {\n const step = Decrypter.STEP;\n const encrypted32 = new Int32Array(encrypted.buffer);\n const decrypted = new Uint8Array(encrypted.byteLength);\n let i = 0;\n this.asyncStream_ = new AsyncStream(); // split up the encryption job and do the individual chunks asynchronously\n\n this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i, i + step), key, initVector, decrypted));\n for (i = step; i < encrypted32.length; i += step) {\n initVector = new Uint32Array([ntoh(encrypted32[i - 4]), ntoh(encrypted32[i - 3]), ntoh(encrypted32[i - 2]), ntoh(encrypted32[i - 1])]);\n this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i, i + step), key, initVector, decrypted));\n } // invoke the done() callback when everything is finished\n\n this.asyncStream_.push(function () {\n // remove pkcs#7 padding from the decrypted bytes\n done(null, unpad(decrypted));\n });\n }\n /**\n * a getter for step the maximum number of bytes to process at one time\n *\n * @return {number} the value of step 32000\n */\n\n static get STEP() {\n // 4 * 8000;\n return 32000;\n }\n /**\n * @private\n */\n\n decryptChunk_(encrypted, key, initVector, decrypted) {\n return function () {\n const bytes = decrypt(encrypted, key, initVector);\n decrypted.set(bytes, encrypted.byteOffset);\n };\n }\n }\n var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};\n var win;\n if (typeof window !== \"undefined\") {\n win = window;\n } else if (typeof commonjsGlobal !== \"undefined\") {\n win = commonjsGlobal;\n } else if (typeof self !== \"undefined\") {\n win = self;\n } else {\n win = {};\n }\n var window_1 = win;\n var isArrayBufferView = function isArrayBufferView(obj) {\n if (ArrayBuffer.isView === 'function') {\n return ArrayBuffer.isView(obj);\n }\n return obj && obj.buffer instanceof ArrayBuffer;\n };\n var BigInt = window_1.BigInt || Number;\n [BigInt('0x1'), BigInt('0x100'), BigInt('0x10000'), BigInt('0x1000000'), BigInt('0x100000000'), BigInt('0x10000000000'), BigInt('0x1000000000000'), BigInt('0x100000000000000'), BigInt('0x10000000000000000')];\n (function () {\n var a = new Uint16Array([0xFFCC]);\n var b = new Uint8Array(a.buffer, a.byteOffset, a.byteLength);\n if (b[0] === 0xFF) {\n return 'big';\n }\n if (b[0] === 0xCC) {\n return 'little';\n }\n return 'unknown';\n })();\n /**\n * Creates an object for sending to a web worker modifying properties that are TypedArrays\n * into a new object with seperated properties for the buffer, byteOffset, and byteLength.\n *\n * @param {Object} message\n * Object of properties and values to send to the web worker\n * @return {Object}\n * Modified message with TypedArray values expanded\n * @function createTransferableMessage\n */\n\n const createTransferableMessage = function (message) {\n const transferable = {};\n Object.keys(message).forEach(key => {\n const value = message[key];\n if (isArrayBufferView(value)) {\n transferable[key] = {\n bytes: value.buffer,\n byteOffset: value.byteOffset,\n byteLength: value.byteLength\n };\n } else {\n transferable[key] = value;\n }\n });\n return transferable;\n };\n /* global self */\n\n /**\n * Our web worker interface so that things can talk to aes-decrypter\n * that will be running in a web worker. the scope is passed to this by\n * webworkify.\n */\n\n self.onmessage = function (event) {\n const data = event.data;\n const encrypted = new Uint8Array(data.encrypted.bytes, data.encrypted.byteOffset, data.encrypted.byteLength);\n const key = new Uint32Array(data.key.bytes, data.key.byteOffset, data.key.byteLength / 4);\n const iv = new Uint32Array(data.iv.bytes, data.iv.byteOffset, data.iv.byteLength / 4);\n /* eslint-disable no-new, handle-callback-err */\n\n new Decrypter(encrypted, key, iv, function (err, bytes) {\n self.postMessage(createTransferableMessage({\n source: data.source,\n decrypted: bytes\n }), [bytes.buffer]);\n });\n /* eslint-enable */\n };\n}));\n\nvar Decrypter = factory(workerCode);\n/* rollup-plugin-worker-factory end for worker!/home/runner/work/http-streaming/http-streaming/src/decrypter-worker.js */\n\n/**\n * Convert the properties of an HLS track into an audioTrackKind.\n *\n * @private\n */\n\nconst audioTrackKind_ = properties => {\n let kind = properties.default ? 'main' : 'alternative';\n if (properties.characteristics && properties.characteristics.indexOf('public.accessibility.describes-video') >= 0) {\n kind = 'main-desc';\n }\n return kind;\n};\n/**\n * Pause provided segment loader and playlist loader if active\n *\n * @param {SegmentLoader} segmentLoader\n * SegmentLoader to pause\n * @param {Object} mediaType\n * Active media type\n * @function stopLoaders\n */\n\nconst stopLoaders = (segmentLoader, mediaType) => {\n segmentLoader.abort();\n segmentLoader.pause();\n if (mediaType && mediaType.activePlaylistLoader) {\n mediaType.activePlaylistLoader.pause();\n mediaType.activePlaylistLoader = null;\n }\n};\n/**\n * Start loading provided segment loader and playlist loader\n *\n * @param {PlaylistLoader} playlistLoader\n * PlaylistLoader to start loading\n * @param {Object} mediaType\n * Active media type\n * @function startLoaders\n */\n\nconst startLoaders = (playlistLoader, mediaType) => {\n // Segment loader will be started after `loadedmetadata` or `loadedplaylist` from the\n // playlist loader\n mediaType.activePlaylistLoader = playlistLoader;\n playlistLoader.load();\n};\n/**\n * Returns a function to be called when the media group changes. It performs a\n * non-destructive (preserve the buffer) resync of the SegmentLoader. This is because a\n * change of group is merely a rendition switch of the same content at another encoding,\n * rather than a change of content, such as switching audio from English to Spanish.\n *\n * @param {string} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @return {Function}\n * Handler for a non-destructive resync of SegmentLoader when the active media\n * group changes.\n * @function onGroupChanged\n */\n\nconst onGroupChanged = (type, settings) => () => {\n const {\n segmentLoaders: {\n [type]: segmentLoader,\n main: mainSegmentLoader\n },\n mediaTypes: {\n [type]: mediaType\n }\n } = settings;\n const activeTrack = mediaType.activeTrack();\n const activeGroup = mediaType.getActiveGroup();\n const previousActiveLoader = mediaType.activePlaylistLoader;\n const lastGroup = mediaType.lastGroup_; // the group did not change do nothing\n\n if (activeGroup && lastGroup && activeGroup.id === lastGroup.id) {\n return;\n }\n mediaType.lastGroup_ = activeGroup;\n mediaType.lastTrack_ = activeTrack;\n stopLoaders(segmentLoader, mediaType);\n if (!activeGroup || activeGroup.isMainPlaylist) {\n // there is no group active or active group is a main playlist and won't change\n return;\n }\n if (!activeGroup.playlistLoader) {\n if (previousActiveLoader) {\n // The previous group had a playlist loader but the new active group does not\n // this means we are switching from demuxed to muxed audio. In this case we want to\n // do a destructive reset of the main segment loader and not restart the audio\n // loaders.\n mainSegmentLoader.resetEverything();\n }\n return;\n } // Non-destructive resync\n\n segmentLoader.resyncLoader();\n startLoaders(activeGroup.playlistLoader, mediaType);\n};\nconst onGroupChanging = (type, settings) => () => {\n const {\n segmentLoaders: {\n [type]: segmentLoader\n },\n mediaTypes: {\n [type]: mediaType\n }\n } = settings;\n mediaType.lastGroup_ = null;\n segmentLoader.abort();\n segmentLoader.pause();\n};\n/**\n * Returns a function to be called when the media track changes. It performs a\n * destructive reset of the SegmentLoader to ensure we start loading as close to\n * currentTime as possible.\n *\n * @param {string} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @return {Function}\n * Handler for a destructive reset of SegmentLoader when the active media\n * track changes.\n * @function onTrackChanged\n */\n\nconst onTrackChanged = (type, settings) => () => {\n const {\n mainPlaylistLoader,\n segmentLoaders: {\n [type]: segmentLoader,\n main: mainSegmentLoader\n },\n mediaTypes: {\n [type]: mediaType\n }\n } = settings;\n const activeTrack = mediaType.activeTrack();\n const activeGroup = mediaType.getActiveGroup();\n const previousActiveLoader = mediaType.activePlaylistLoader;\n const lastTrack = mediaType.lastTrack_; // track did not change, do nothing\n\n if (lastTrack && activeTrack && lastTrack.id === activeTrack.id) {\n return;\n }\n mediaType.lastGroup_ = activeGroup;\n mediaType.lastTrack_ = activeTrack;\n stopLoaders(segmentLoader, mediaType);\n if (!activeGroup) {\n // there is no group active so we do not want to restart loaders\n return;\n }\n if (activeGroup.isMainPlaylist) {\n // track did not change, do nothing\n if (!activeTrack || !lastTrack || activeTrack.id === lastTrack.id) {\n return;\n }\n const pc = settings.vhs.playlistController_;\n const newPlaylist = pc.selectPlaylist(); // media will not change do nothing\n\n if (pc.media() === newPlaylist) {\n return;\n }\n mediaType.logger_(`track change. Switching main audio from ${lastTrack.id} to ${activeTrack.id}`);\n mainPlaylistLoader.pause();\n mainSegmentLoader.resetEverything();\n pc.fastQualityChange_(newPlaylist);\n return;\n }\n if (type === 'AUDIO') {\n if (!activeGroup.playlistLoader) {\n // when switching from demuxed audio/video to muxed audio/video (noted by no\n // playlist loader for the audio group), we want to do a destructive reset of the\n // main segment loader and not restart the audio loaders\n mainSegmentLoader.setAudio(true); // don't have to worry about disabling the audio of the audio segment loader since\n // it should be stopped\n\n mainSegmentLoader.resetEverything();\n return;\n } // although the segment loader is an audio segment loader, call the setAudio\n // function to ensure it is prepared to re-append the init segment (or handle other\n // config changes)\n\n segmentLoader.setAudio(true);\n mainSegmentLoader.setAudio(false);\n }\n if (previousActiveLoader === activeGroup.playlistLoader) {\n // Nothing has actually changed. This can happen because track change events can fire\n // multiple times for a \"single\" change. One for enabling the new active track, and\n // one for disabling the track that was active\n startLoaders(activeGroup.playlistLoader, mediaType);\n return;\n }\n if (segmentLoader.track) {\n // For WebVTT, set the new text track in the segmentloader\n segmentLoader.track(activeTrack);\n } // destructive reset\n\n segmentLoader.resetEverything();\n startLoaders(activeGroup.playlistLoader, mediaType);\n};\nconst onError = {\n /**\n * Returns a function to be called when a SegmentLoader or PlaylistLoader encounters\n * an error.\n *\n * @param {string} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @return {Function}\n * Error handler. Logs warning (or error if the playlist is excluded) to\n * console and switches back to default audio track.\n * @function onError.AUDIO\n */\n AUDIO: (type, settings) => () => {\n const {\n mediaTypes: {\n [type]: mediaType\n },\n excludePlaylist\n } = settings; // switch back to default audio track\n\n const activeTrack = mediaType.activeTrack();\n const activeGroup = mediaType.activeGroup();\n const id = (activeGroup.filter(group => group.default)[0] || activeGroup[0]).id;\n const defaultTrack = mediaType.tracks[id];\n if (activeTrack === defaultTrack) {\n // Default track encountered an error. All we can do now is exclude the current\n // rendition and hope another will switch audio groups\n excludePlaylist({\n error: {\n message: 'Problem encountered loading the default audio track.'\n }\n });\n return;\n }\n videojs.log.warn('Problem encountered loading the alternate audio track.' + 'Switching back to default.');\n for (const trackId in mediaType.tracks) {\n mediaType.tracks[trackId].enabled = mediaType.tracks[trackId] === defaultTrack;\n }\n mediaType.onTrackChanged();\n },\n /**\n * Returns a function to be called when a SegmentLoader or PlaylistLoader encounters\n * an error.\n *\n * @param {string} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @return {Function}\n * Error handler. Logs warning to console and disables the active subtitle track\n * @function onError.SUBTITLES\n */\n SUBTITLES: (type, settings) => () => {\n const {\n mediaTypes: {\n [type]: mediaType\n }\n } = settings;\n videojs.log.warn('Problem encountered loading the subtitle track.' + 'Disabling subtitle track.');\n const track = mediaType.activeTrack();\n if (track) {\n track.mode = 'disabled';\n }\n mediaType.onTrackChanged();\n }\n};\nconst setupListeners = {\n /**\n * Setup event listeners for audio playlist loader\n *\n * @param {string} type\n * MediaGroup type\n * @param {PlaylistLoader|null} playlistLoader\n * PlaylistLoader to register listeners on\n * @param {Object} settings\n * Object containing required information for media groups\n * @function setupListeners.AUDIO\n */\n AUDIO: (type, playlistLoader, settings) => {\n if (!playlistLoader) {\n // no playlist loader means audio will be muxed with the video\n return;\n }\n const {\n tech,\n requestOptions,\n segmentLoaders: {\n [type]: segmentLoader\n }\n } = settings;\n playlistLoader.on('loadedmetadata', () => {\n const media = playlistLoader.media();\n segmentLoader.playlist(media, requestOptions); // if the video is already playing, or if this isn't a live video and preload\n // permits, start downloading segments\n\n if (!tech.paused() || media.endList && tech.preload() !== 'none') {\n segmentLoader.load();\n }\n });\n playlistLoader.on('loadedplaylist', () => {\n segmentLoader.playlist(playlistLoader.media(), requestOptions); // If the player isn't paused, ensure that the segment loader is running\n\n if (!tech.paused()) {\n segmentLoader.load();\n }\n });\n playlistLoader.on('error', onError[type](type, settings));\n },\n /**\n * Setup event listeners for subtitle playlist loader\n *\n * @param {string} type\n * MediaGroup type\n * @param {PlaylistLoader|null} playlistLoader\n * PlaylistLoader to register listeners on\n * @param {Object} settings\n * Object containing required information for media groups\n * @function setupListeners.SUBTITLES\n */\n SUBTITLES: (type, playlistLoader, settings) => {\n const {\n tech,\n requestOptions,\n segmentLoaders: {\n [type]: segmentLoader\n },\n mediaTypes: {\n [type]: mediaType\n }\n } = settings;\n playlistLoader.on('loadedmetadata', () => {\n const media = playlistLoader.media();\n segmentLoader.playlist(media, requestOptions);\n segmentLoader.track(mediaType.activeTrack()); // if the video is already playing, or if this isn't a live video and preload\n // permits, start downloading segments\n\n if (!tech.paused() || media.endList && tech.preload() !== 'none') {\n segmentLoader.load();\n }\n });\n playlistLoader.on('loadedplaylist', () => {\n segmentLoader.playlist(playlistLoader.media(), requestOptions); // If the player isn't paused, ensure that the segment loader is running\n\n if (!tech.paused()) {\n segmentLoader.load();\n }\n });\n playlistLoader.on('error', onError[type](type, settings));\n }\n};\nconst initialize = {\n /**\n * Setup PlaylistLoaders and AudioTracks for the audio groups\n *\n * @param {string} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @function initialize.AUDIO\n */\n 'AUDIO': (type, settings) => {\n const {\n vhs,\n sourceType,\n segmentLoaders: {\n [type]: segmentLoader\n },\n requestOptions,\n main: {\n mediaGroups\n },\n mediaTypes: {\n [type]: {\n groups,\n tracks,\n logger_\n }\n },\n mainPlaylistLoader\n } = settings;\n const audioOnlyMain = isAudioOnly(mainPlaylistLoader.main); // force a default if we have none\n\n if (!mediaGroups[type] || Object.keys(mediaGroups[type]).length === 0) {\n mediaGroups[type] = {\n main: {\n default: {\n default: true\n }\n }\n };\n if (audioOnlyMain) {\n mediaGroups[type].main.default.playlists = mainPlaylistLoader.main.playlists;\n }\n }\n for (const groupId in mediaGroups[type]) {\n if (!groups[groupId]) {\n groups[groupId] = [];\n }\n for (const variantLabel in mediaGroups[type][groupId]) {\n let properties = mediaGroups[type][groupId][variantLabel];\n let playlistLoader;\n if (audioOnlyMain) {\n logger_(`AUDIO group '${groupId}' label '${variantLabel}' is a main playlist`);\n properties.isMainPlaylist = true;\n playlistLoader = null; // if vhs-json was provided as the source, and the media playlist was resolved,\n // use the resolved media playlist object\n } else if (sourceType === 'vhs-json' && properties.playlists) {\n playlistLoader = new PlaylistLoader(properties.playlists[0], vhs, requestOptions);\n } else if (properties.resolvedUri) {\n playlistLoader = new PlaylistLoader(properties.resolvedUri, vhs, requestOptions); // TODO: dash isn't the only type with properties.playlists\n // should we even have properties.playlists in this check.\n } else if (properties.playlists && sourceType === 'dash') {\n playlistLoader = new DashPlaylistLoader(properties.playlists[0], vhs, requestOptions, mainPlaylistLoader);\n } else {\n // no resolvedUri means the audio is muxed with the video when using this\n // audio track\n playlistLoader = null;\n }\n properties = merge({\n id: variantLabel,\n playlistLoader\n }, properties);\n setupListeners[type](type, properties.playlistLoader, settings);\n groups[groupId].push(properties);\n if (typeof tracks[variantLabel] === 'undefined') {\n const track = new videojs.AudioTrack({\n id: variantLabel,\n kind: audioTrackKind_(properties),\n enabled: false,\n language: properties.language,\n default: properties.default,\n label: variantLabel\n });\n tracks[variantLabel] = track;\n }\n }\n } // setup single error event handler for the segment loader\n\n segmentLoader.on('error', onError[type](type, settings));\n },\n /**\n * Setup PlaylistLoaders and TextTracks for the subtitle groups\n *\n * @param {string} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @function initialize.SUBTITLES\n */\n 'SUBTITLES': (type, settings) => {\n const {\n tech,\n vhs,\n sourceType,\n segmentLoaders: {\n [type]: segmentLoader\n },\n requestOptions,\n main: {\n mediaGroups\n },\n mediaTypes: {\n [type]: {\n groups,\n tracks\n }\n },\n mainPlaylistLoader\n } = settings;\n for (const groupId in mediaGroups[type]) {\n if (!groups[groupId]) {\n groups[groupId] = [];\n }\n for (const variantLabel in mediaGroups[type][groupId]) {\n if (!vhs.options_.useForcedSubtitles && mediaGroups[type][groupId][variantLabel].forced) {\n // Subtitle playlists with the forced attribute are not selectable in Safari.\n // According to Apple's HLS Authoring Specification:\n // If content has forced subtitles and regular subtitles in a given language,\n // the regular subtitles track in that language MUST contain both the forced\n // subtitles and the regular subtitles for that language.\n // Because of this requirement and that Safari does not add forced subtitles,\n // forced subtitles are skipped here to maintain consistent experience across\n // all platforms\n continue;\n }\n let properties = mediaGroups[type][groupId][variantLabel];\n let playlistLoader;\n if (sourceType === 'hls') {\n playlistLoader = new PlaylistLoader(properties.resolvedUri, vhs, requestOptions);\n } else if (sourceType === 'dash') {\n const playlists = properties.playlists.filter(p => p.excludeUntil !== Infinity);\n if (!playlists.length) {\n return;\n }\n playlistLoader = new DashPlaylistLoader(properties.playlists[0], vhs, requestOptions, mainPlaylistLoader);\n } else if (sourceType === 'vhs-json') {\n playlistLoader = new PlaylistLoader(\n // if the vhs-json object included the media playlist, use the media playlist\n // as provided, otherwise use the resolved URI to load the playlist\n properties.playlists ? properties.playlists[0] : properties.resolvedUri, vhs, requestOptions);\n }\n properties = merge({\n id: variantLabel,\n playlistLoader\n }, properties);\n setupListeners[type](type, properties.playlistLoader, settings);\n groups[groupId].push(properties);\n if (typeof tracks[variantLabel] === 'undefined') {\n const track = tech.addRemoteTextTrack({\n id: variantLabel,\n kind: 'subtitles',\n default: properties.default && properties.autoselect,\n language: properties.language,\n label: variantLabel\n }, false).track;\n tracks[variantLabel] = track;\n }\n }\n } // setup single error event handler for the segment loader\n\n segmentLoader.on('error', onError[type](type, settings));\n },\n /**\n * Setup TextTracks for the closed-caption groups\n *\n * @param {String} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @function initialize['CLOSED-CAPTIONS']\n */\n 'CLOSED-CAPTIONS': (type, settings) => {\n const {\n tech,\n main: {\n mediaGroups\n },\n mediaTypes: {\n [type]: {\n groups,\n tracks\n }\n }\n } = settings;\n for (const groupId in mediaGroups[type]) {\n if (!groups[groupId]) {\n groups[groupId] = [];\n }\n for (const variantLabel in mediaGroups[type][groupId]) {\n const properties = mediaGroups[type][groupId][variantLabel]; // Look for either 608 (CCn) or 708 (SERVICEn) caption services\n\n if (!/^(?:CC|SERVICE)/.test(properties.instreamId)) {\n continue;\n }\n const captionServices = tech.options_.vhs && tech.options_.vhs.captionServices || {};\n let newProps = {\n label: variantLabel,\n language: properties.language,\n instreamId: properties.instreamId,\n default: properties.default && properties.autoselect\n };\n if (captionServices[newProps.instreamId]) {\n newProps = merge(newProps, captionServices[newProps.instreamId]);\n }\n if (newProps.default === undefined) {\n delete newProps.default;\n } // No PlaylistLoader is required for Closed-Captions because the captions are\n // embedded within the video stream\n\n groups[groupId].push(merge({\n id: variantLabel\n }, properties));\n if (typeof tracks[variantLabel] === 'undefined') {\n const track = tech.addRemoteTextTrack({\n id: newProps.instreamId,\n kind: 'captions',\n default: newProps.default,\n language: newProps.language,\n label: newProps.label\n }, false).track;\n tracks[variantLabel] = track;\n }\n }\n }\n }\n};\nconst groupMatch = (list, media) => {\n for (let i = 0; i < list.length; i++) {\n if (playlistMatch(media, list[i])) {\n return true;\n }\n if (list[i].playlists && groupMatch(list[i].playlists, media)) {\n return true;\n }\n }\n return false;\n};\n/**\n * Returns a function used to get the active group of the provided type\n *\n * @param {string} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @return {Function}\n * Function that returns the active media group for the provided type. Takes an\n * optional parameter {TextTrack} track. If no track is provided, a list of all\n * variants in the group, otherwise the variant corresponding to the provided\n * track is returned.\n * @function activeGroup\n */\n\nconst activeGroup = (type, settings) => track => {\n const {\n mainPlaylistLoader,\n mediaTypes: {\n [type]: {\n groups\n }\n }\n } = settings;\n const media = mainPlaylistLoader.media();\n if (!media) {\n return null;\n }\n let variants = null; // set to variants to main media active group\n\n if (media.attributes[type]) {\n variants = groups[media.attributes[type]];\n }\n const groupKeys = Object.keys(groups);\n if (!variants) {\n // find the mainPlaylistLoader media\n // that is in a media group if we are dealing\n // with audio only\n if (type === 'AUDIO' && groupKeys.length > 1 && isAudioOnly(settings.main)) {\n for (let i = 0; i < groupKeys.length; i++) {\n const groupPropertyList = groups[groupKeys[i]];\n if (groupMatch(groupPropertyList, media)) {\n variants = groupPropertyList;\n break;\n }\n } // use the main group if it exists\n } else if (groups.main) {\n variants = groups.main; // only one group, use that one\n } else if (groupKeys.length === 1) {\n variants = groups[groupKeys[0]];\n }\n }\n if (typeof track === 'undefined') {\n return variants;\n }\n if (track === null || !variants) {\n // An active track was specified so a corresponding group is expected. track === null\n // means no track is currently active so there is no corresponding group\n return null;\n }\n return variants.filter(props => props.id === track.id)[0] || null;\n};\nconst activeTrack = {\n /**\n * Returns a function used to get the active track of type provided\n *\n * @param {string} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @return {Function}\n * Function that returns the active media track for the provided type. Returns\n * null if no track is active\n * @function activeTrack.AUDIO\n */\n AUDIO: (type, settings) => () => {\n const {\n mediaTypes: {\n [type]: {\n tracks\n }\n }\n } = settings;\n for (const id in tracks) {\n if (tracks[id].enabled) {\n return tracks[id];\n }\n }\n return null;\n },\n /**\n * Returns a function used to get the active track of type provided\n *\n * @param {string} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @return {Function}\n * Function that returns the active media track for the provided type. Returns\n * null if no track is active\n * @function activeTrack.SUBTITLES\n */\n SUBTITLES: (type, settings) => () => {\n const {\n mediaTypes: {\n [type]: {\n tracks\n }\n }\n } = settings;\n for (const id in tracks) {\n if (tracks[id].mode === 'showing' || tracks[id].mode === 'hidden') {\n return tracks[id];\n }\n }\n return null;\n }\n};\nconst getActiveGroup = (type, {\n mediaTypes\n}) => () => {\n const activeTrack_ = mediaTypes[type].activeTrack();\n if (!activeTrack_) {\n return null;\n }\n return mediaTypes[type].activeGroup(activeTrack_);\n};\n/**\n * Setup PlaylistLoaders and Tracks for media groups (Audio, Subtitles,\n * Closed-Captions) specified in the main manifest.\n *\n * @param {Object} settings\n * Object containing required information for setting up the media groups\n * @param {Tech} settings.tech\n * The tech of the player\n * @param {Object} settings.requestOptions\n * XHR request options used by the segment loaders\n * @param {PlaylistLoader} settings.mainPlaylistLoader\n * PlaylistLoader for the main source\n * @param {VhsHandler} settings.vhs\n * VHS SourceHandler\n * @param {Object} settings.main\n * The parsed main manifest\n * @param {Object} settings.mediaTypes\n * Object to store the loaders, tracks, and utility methods for each media type\n * @param {Function} settings.excludePlaylist\n * Excludes the current rendition and forces a rendition switch.\n * @function setupMediaGroups\n */\n\nconst setupMediaGroups = settings => {\n ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(type => {\n initialize[type](type, settings);\n });\n const {\n mediaTypes,\n mainPlaylistLoader,\n tech,\n vhs,\n segmentLoaders: {\n ['AUDIO']: audioSegmentLoader,\n main: mainSegmentLoader\n }\n } = settings; // setup active group and track getters and change event handlers\n\n ['AUDIO', 'SUBTITLES'].forEach(type => {\n mediaTypes[type].activeGroup = activeGroup(type, settings);\n mediaTypes[type].activeTrack = activeTrack[type](type, settings);\n mediaTypes[type].onGroupChanged = onGroupChanged(type, settings);\n mediaTypes[type].onGroupChanging = onGroupChanging(type, settings);\n mediaTypes[type].onTrackChanged = onTrackChanged(type, settings);\n mediaTypes[type].getActiveGroup = getActiveGroup(type, settings);\n }); // DO NOT enable the default subtitle or caption track.\n // DO enable the default audio track\n\n const audioGroup = mediaTypes.AUDIO.activeGroup();\n if (audioGroup) {\n const groupId = (audioGroup.filter(group => group.default)[0] || audioGroup[0]).id;\n mediaTypes.AUDIO.tracks[groupId].enabled = true;\n mediaTypes.AUDIO.onGroupChanged();\n mediaTypes.AUDIO.onTrackChanged();\n const activeAudioGroup = mediaTypes.AUDIO.getActiveGroup(); // a similar check for handling setAudio on each loader is run again each time the\n // track is changed, but needs to be handled here since the track may not be considered\n // changed on the first call to onTrackChanged\n\n if (!activeAudioGroup.playlistLoader) {\n // either audio is muxed with video or the stream is audio only\n mainSegmentLoader.setAudio(true);\n } else {\n // audio is demuxed\n mainSegmentLoader.setAudio(false);\n audioSegmentLoader.setAudio(true);\n }\n }\n mainPlaylistLoader.on('mediachange', () => {\n ['AUDIO', 'SUBTITLES'].forEach(type => mediaTypes[type].onGroupChanged());\n });\n mainPlaylistLoader.on('mediachanging', () => {\n ['AUDIO', 'SUBTITLES'].forEach(type => mediaTypes[type].onGroupChanging());\n }); // custom audio track change event handler for usage event\n\n const onAudioTrackChanged = () => {\n mediaTypes.AUDIO.onTrackChanged();\n tech.trigger({\n type: 'usage',\n name: 'vhs-audio-change'\n });\n };\n tech.audioTracks().addEventListener('change', onAudioTrackChanged);\n tech.remoteTextTracks().addEventListener('change', mediaTypes.SUBTITLES.onTrackChanged);\n vhs.on('dispose', () => {\n tech.audioTracks().removeEventListener('change', onAudioTrackChanged);\n tech.remoteTextTracks().removeEventListener('change', mediaTypes.SUBTITLES.onTrackChanged);\n }); // clear existing audio tracks and add the ones we just created\n\n tech.clearTracks('audio');\n for (const id in mediaTypes.AUDIO.tracks) {\n tech.audioTracks().addTrack(mediaTypes.AUDIO.tracks[id]);\n }\n};\n/**\n * Creates skeleton object used to store the loaders, tracks, and utility methods for each\n * media type\n *\n * @return {Object}\n * Object to store the loaders, tracks, and utility methods for each media type\n * @function createMediaTypes\n */\n\nconst createMediaTypes = () => {\n const mediaTypes = {};\n ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(type => {\n mediaTypes[type] = {\n groups: {},\n tracks: {},\n activePlaylistLoader: null,\n activeGroup: noop,\n activeTrack: noop,\n getActiveGroup: noop,\n onGroupChanged: noop,\n onTrackChanged: noop,\n lastTrack_: null,\n logger_: logger(`MediaGroups[${type}]`)\n };\n });\n return mediaTypes;\n};\n\n/**\n * A utility class for setting properties and maintaining the state of the content steering manifest.\n *\n * Content Steering manifest format:\n * VERSION: number (required) currently only version 1 is supported.\n * TTL: number in seconds (optional) until the next content steering manifest reload.\n * RELOAD-URI: string (optional) uri to fetch the next content steering manifest.\n * SERVICE-LOCATION-PRIORITY or PATHWAY-PRIORITY a non empty array of unique string values.\n */\n\nclass SteeringManifest {\n constructor() {\n this.priority_ = [];\n }\n set version(number) {\n // Only version 1 is currently supported for both DASH and HLS.\n if (number === 1) {\n this.version_ = number;\n }\n }\n set ttl(seconds) {\n // TTL = time-to-live, default = 300 seconds.\n this.ttl_ = seconds || 300;\n }\n set reloadUri(uri) {\n if (uri) {\n // reload URI can be relative to the previous reloadUri.\n this.reloadUri_ = resolveUrl(this.reloadUri_, uri);\n }\n }\n set priority(array) {\n // priority must be non-empty and unique values.\n if (array && array.length) {\n this.priority_ = array;\n }\n }\n get version() {\n return this.version_;\n }\n get ttl() {\n return this.ttl_;\n }\n get reloadUri() {\n return this.reloadUri_;\n }\n get priority() {\n return this.priority_;\n }\n}\n/**\n * This class represents a content steering manifest and associated state. See both HLS and DASH specifications.\n * HLS: https://developer.apple.com/streaming/HLSContentSteeringSpecification.pdf and\n * https://datatracker.ietf.org/doc/draft-pantos-hls-rfc8216bis/ section 4.4.6.6.\n * DASH: https://dashif.org/docs/DASH-IF-CTS-00XX-Content-Steering-Community-Review.pdf\n *\n * @param {function} xhr for making a network request from the browser.\n * @param {function} bandwidth for fetching the current bandwidth from the main segment loader.\n */\n\nclass ContentSteeringController extends videojs.EventTarget {\n constructor(xhr, bandwidth) {\n super();\n this.currentPathway = null;\n this.defaultPathway = null;\n this.queryBeforeStart = null;\n this.availablePathways_ = new Set();\n this.excludedPathways_ = new Set();\n this.steeringManifest = new SteeringManifest();\n this.proxyServerUrl_ = null;\n this.manifestType_ = null;\n this.ttlTimeout_ = null;\n this.request_ = null;\n this.excludedSteeringManifestURLs = new Set();\n this.logger_ = logger('Content Steering');\n this.xhr_ = xhr;\n this.getBandwidth_ = bandwidth;\n }\n /**\n * Assigns the content steering tag properties to the steering controller\n *\n * @param {string} baseUrl the baseURL from the manifest for resolving the steering manifest url\n * @param {Object} steeringTag the content steering tag from the main manifest\n */\n\n assignTagProperties(baseUrl, steeringTag) {\n this.manifestType_ = steeringTag.serverUri ? 'HLS' : 'DASH'; // serverUri is HLS serverURL is DASH\n\n const steeringUri = steeringTag.serverUri || steeringTag.serverURL;\n if (!steeringUri) {\n this.logger_(`steering manifest URL is ${steeringUri}, cannot request steering manifest.`);\n this.trigger('error');\n return;\n } // Content steering manifests can be encoded as a data URI. We can decode, parse and return early if that's the case.\n\n if (steeringUri.startsWith('data:')) {\n this.decodeDataUriManifest_(steeringUri.substring(steeringUri.indexOf(',') + 1));\n return;\n } // With DASH queryBeforeStart, we want to use the steeringUri as soon as possible for the request.\n\n this.steeringManifest.reloadUri = this.queryBeforeStart ? steeringUri : resolveUrl(baseUrl, steeringUri); // pathwayId is HLS defaultServiceLocation is DASH\n\n this.defaultPathway = steeringTag.pathwayId || steeringTag.defaultServiceLocation; // currently only DASH supports the following properties on tags.\n\n this.queryBeforeStart = steeringTag.queryBeforeStart || false;\n this.proxyServerUrl_ = steeringTag.proxyServerURL || null; // trigger a steering event if we have a pathway from the content steering tag.\n // this tells VHS which segment pathway to start with.\n // If queryBeforeStart is true we need to wait for the steering manifest response.\n\n if (this.defaultPathway && !this.queryBeforeStart) {\n this.trigger('content-steering');\n }\n if (this.queryBeforeStart) {\n this.requestSteeringManifest(this.steeringManifest.reloadUri);\n }\n }\n /**\n * Requests the content steering manifest and parse the response. This should only be called after\n * assignTagProperties was called with a content steering tag.\n *\n * @param {string} initialUri The optional uri to make the request with.\n * If set, the request should be made with exactly what is passed in this variable.\n * This scenario is specific to DASH when the queryBeforeStart parameter is true.\n * This scenario should only happen once on initalization.\n */\n\n requestSteeringManifest(initialUri) {\n const reloadUri = this.steeringManifest.reloadUri;\n if (!initialUri && !reloadUri) {\n return;\n } // We currently don't support passing MPD query parameters directly to the content steering URL as this requires\n // ExtUrlQueryInfo tag support. See the DASH content steering spec section 8.1.\n // This request URI accounts for manifest URIs that have been excluded.\n\n const uri = initialUri || this.getRequestURI(reloadUri); // If there are no valid manifest URIs, we should stop content steering.\n\n if (!uri) {\n this.logger_('No valid content steering manifest URIs. Stopping content steering.');\n this.trigger('error');\n this.dispose();\n return;\n }\n this.request_ = this.xhr_({\n uri\n }, (error, errorInfo) => {\n if (error) {\n // If the client receives HTTP 410 Gone in response to a manifest request,\n // it MUST NOT issue another request for that URI for the remainder of the\n // playback session. It MAY continue to use the most-recently obtained set\n // of Pathways.\n if (errorInfo.status === 410) {\n this.logger_(`manifest request 410 ${error}.`);\n this.logger_(`There will be no more content steering requests to ${uri} this session.`);\n this.excludedSteeringManifestURLs.add(uri);\n return;\n } // If the client receives HTTP 429 Too Many Requests with a Retry-After\n // header in response to a manifest request, it SHOULD wait until the time\n // specified by the Retry-After header to reissue the request.\n\n if (errorInfo.status === 429) {\n const retrySeconds = errorInfo.responseHeaders['retry-after'];\n this.logger_(`manifest request 429 ${error}.`);\n this.logger_(`content steering will retry in ${retrySeconds} seconds.`);\n this.startTTLTimeout_(parseInt(retrySeconds, 10));\n return;\n } // If the Steering Manifest cannot be loaded and parsed correctly, the\n // client SHOULD continue to use the previous values and attempt to reload\n // it after waiting for the previously-specified TTL (or 5 minutes if\n // none).\n\n this.logger_(`manifest failed to load ${error}.`);\n this.startTTLTimeout_();\n return;\n }\n const steeringManifestJson = JSON.parse(this.request_.responseText);\n this.startTTLTimeout_();\n this.assignSteeringProperties_(steeringManifestJson);\n });\n }\n /**\n * Set the proxy server URL and add the steering manifest url as a URI encoded parameter.\n *\n * @param {string} steeringUrl the steering manifest url\n * @return the steering manifest url to a proxy server with all parameters set\n */\n\n setProxyServerUrl_(steeringUrl) {\n const steeringUrlObject = new window$1.URL(steeringUrl);\n const proxyServerUrlObject = new window$1.URL(this.proxyServerUrl_);\n proxyServerUrlObject.searchParams.set('url', encodeURI(steeringUrlObject.toString()));\n return this.setSteeringParams_(proxyServerUrlObject.toString());\n }\n /**\n * Decodes and parses the data uri encoded steering manifest\n *\n * @param {string} dataUri the data uri to be decoded and parsed.\n */\n\n decodeDataUriManifest_(dataUri) {\n const steeringManifestJson = JSON.parse(window$1.atob(dataUri));\n this.assignSteeringProperties_(steeringManifestJson);\n }\n /**\n * Set the HLS or DASH content steering manifest request query parameters. For example:\n * _HLS_pathway=\"\" and _HLS_throughput=\n * _DASH_pathway and _DASH_throughput\n *\n * @param {string} uri to add content steering server parameters to.\n * @return a new uri as a string with the added steering query parameters.\n */\n\n setSteeringParams_(url) {\n const urlObject = new window$1.URL(url);\n const path = this.getPathway();\n const networkThroughput = this.getBandwidth_();\n if (path) {\n const pathwayKey = `_${this.manifestType_}_pathway`;\n urlObject.searchParams.set(pathwayKey, path);\n }\n if (networkThroughput) {\n const throughputKey = `_${this.manifestType_}_throughput`;\n urlObject.searchParams.set(throughputKey, networkThroughput);\n }\n return urlObject.toString();\n }\n /**\n * Assigns the current steering manifest properties and to the SteeringManifest object\n *\n * @param {Object} steeringJson the raw JSON steering manifest\n */\n\n assignSteeringProperties_(steeringJson) {\n this.steeringManifest.version = steeringJson.VERSION;\n if (!this.steeringManifest.version) {\n this.logger_(`manifest version is ${steeringJson.VERSION}, which is not supported.`);\n this.trigger('error');\n return;\n }\n this.steeringManifest.ttl = steeringJson.TTL;\n this.steeringManifest.reloadUri = steeringJson['RELOAD-URI']; // HLS = PATHWAY-PRIORITY required. DASH = SERVICE-LOCATION-PRIORITY optional\n\n this.steeringManifest.priority = steeringJson['PATHWAY-PRIORITY'] || steeringJson['SERVICE-LOCATION-PRIORITY']; // TODO: HLS handle PATHWAY-CLONES. See section 7.2 https://datatracker.ietf.org/doc/draft-pantos-hls-rfc8216bis/\n // 1. apply first pathway from the array.\n // 2. if first pathway doesn't exist in manifest, try next pathway.\n // a. if all pathways are exhausted, ignore the steering manifest priority.\n // 3. if segments fail from an established pathway, try all variants/renditions, then exclude the failed pathway.\n // a. exclude a pathway for a minimum of the last TTL duration. Meaning, from the next steering response,\n // the excluded pathway will be ignored.\n // See excludePathway usage in excludePlaylist().\n // If there are no available pathways, we need to stop content steering.\n\n if (!this.availablePathways_.size) {\n this.logger_('There are no available pathways for content steering. Ending content steering.');\n this.trigger('error');\n this.dispose();\n }\n const chooseNextPathway = pathwaysByPriority => {\n for (const path of pathwaysByPriority) {\n if (this.availablePathways_.has(path)) {\n return path;\n }\n } // If no pathway matches, ignore the manifest and choose the first available.\n\n return [...this.availablePathways_][0];\n };\n const nextPathway = chooseNextPathway(this.steeringManifest.priority);\n if (this.currentPathway !== nextPathway) {\n this.currentPathway = nextPathway;\n this.trigger('content-steering');\n }\n }\n /**\n * Returns the pathway to use for steering decisions\n *\n * @return {string} returns the current pathway or the default\n */\n\n getPathway() {\n return this.currentPathway || this.defaultPathway;\n }\n /**\n * Chooses the manifest request URI based on proxy URIs and server URLs.\n * Also accounts for exclusion on certain manifest URIs.\n *\n * @param {string} reloadUri the base uri before parameters\n *\n * @return {string} the final URI for the request to the manifest server.\n */\n\n getRequestURI(reloadUri) {\n if (!reloadUri) {\n return null;\n }\n const isExcluded = uri => this.excludedSteeringManifestURLs.has(uri);\n if (this.proxyServerUrl_) {\n const proxyURI = this.setProxyServerUrl_(reloadUri);\n if (!isExcluded(proxyURI)) {\n return proxyURI;\n }\n }\n const steeringURI = this.setSteeringParams_(reloadUri);\n if (!isExcluded(steeringURI)) {\n return steeringURI;\n } // Return nothing if all valid manifest URIs are excluded.\n\n return null;\n }\n /**\n * Start the timeout for re-requesting the steering manifest at the TTL interval.\n *\n * @param {number} ttl time in seconds of the timeout. Defaults to the\n * ttl interval in the steering manifest\n */\n\n startTTLTimeout_(ttl = this.steeringManifest.ttl) {\n // 300 (5 minutes) is the default value.\n const ttlMS = ttl * 1000;\n this.ttlTimeout_ = window$1.setTimeout(() => {\n this.requestSteeringManifest();\n }, ttlMS);\n }\n /**\n * Clear the TTL timeout if necessary.\n */\n\n clearTTLTimeout_() {\n window$1.clearTimeout(this.ttlTimeout_);\n this.ttlTimeout_ = null;\n }\n /**\n * aborts any current steering xhr and sets the current request object to null\n */\n\n abort() {\n if (this.request_) {\n this.request_.abort();\n }\n this.request_ = null;\n }\n /**\n * aborts steering requests clears the ttl timeout and resets all properties.\n */\n\n dispose() {\n this.off('content-steering');\n this.off('error');\n this.abort();\n this.clearTTLTimeout_();\n this.currentPathway = null;\n this.defaultPathway = null;\n this.queryBeforeStart = null;\n this.proxyServerUrl_ = null;\n this.manifestType_ = null;\n this.ttlTimeout_ = null;\n this.request_ = null;\n this.excludedSteeringManifestURLs = new Set();\n this.availablePathways_ = new Set();\n this.excludedPathways_ = new Set();\n this.steeringManifest = new SteeringManifest();\n }\n /**\n * adds a pathway to the available pathways set\n *\n * @param {string} pathway the pathway string to add\n */\n\n addAvailablePathway(pathway) {\n if (pathway) {\n this.availablePathways_.add(pathway);\n }\n }\n /**\n * clears all pathways from the available pathways set\n */\n\n clearAvailablePathways() {\n this.availablePathways_.clear();\n }\n excludePathway(pathway) {\n return this.availablePathways_.delete(pathway);\n }\n}\n\n/**\n * @file playlist-controller.js\n */\nconst ABORT_EARLY_EXCLUSION_SECONDS = 10;\nlet Vhs$1; // SegmentLoader stats that need to have each loader's\n// values summed to calculate the final value\n\nconst loaderStats = ['mediaRequests', 'mediaRequestsAborted', 'mediaRequestsTimedout', 'mediaRequestsErrored', 'mediaTransferDuration', 'mediaBytesTransferred', 'mediaAppends'];\nconst sumLoaderStat = function (stat) {\n return this.audioSegmentLoader_[stat] + this.mainSegmentLoader_[stat];\n};\nconst shouldSwitchToMedia = function ({\n currentPlaylist,\n buffered,\n currentTime,\n nextPlaylist,\n bufferLowWaterLine,\n bufferHighWaterLine,\n duration,\n bufferBasedABR,\n log\n}) {\n // we have no other playlist to switch to\n if (!nextPlaylist) {\n videojs.log.warn('We received no playlist to switch to. Please check your stream.');\n return false;\n }\n const sharedLogLine = `allowing switch ${currentPlaylist && currentPlaylist.id || 'null'} -> ${nextPlaylist.id}`;\n if (!currentPlaylist) {\n log(`${sharedLogLine} as current playlist is not set`);\n return true;\n } // no need to switch if playlist is the same\n\n if (nextPlaylist.id === currentPlaylist.id) {\n return false;\n } // determine if current time is in a buffered range.\n\n const isBuffered = Boolean(findRange(buffered, currentTime).length); // If the playlist is live, then we want to not take low water line into account.\n // This is because in LIVE, the player plays 3 segments from the end of the\n // playlist, and if `BUFFER_LOW_WATER_LINE` is greater than the duration availble\n // in those segments, a viewer will never experience a rendition upswitch.\n\n if (!currentPlaylist.endList) {\n // For LLHLS live streams, don't switch renditions before playback has started, as it almost\n // doubles the time to first playback.\n if (!isBuffered && typeof currentPlaylist.partTargetDuration === 'number') {\n log(`not ${sharedLogLine} as current playlist is live llhls, but currentTime isn't in buffered.`);\n return false;\n }\n log(`${sharedLogLine} as current playlist is live`);\n return true;\n }\n const forwardBuffer = timeAheadOf(buffered, currentTime);\n const maxBufferLowWaterLine = bufferBasedABR ? Config.EXPERIMENTAL_MAX_BUFFER_LOW_WATER_LINE : Config.MAX_BUFFER_LOW_WATER_LINE; // For the same reason as LIVE, we ignore the low water line when the VOD\n // duration is below the max potential low water line\n\n if (duration < maxBufferLowWaterLine) {\n log(`${sharedLogLine} as duration < max low water line (${duration} < ${maxBufferLowWaterLine})`);\n return true;\n }\n const nextBandwidth = nextPlaylist.attributes.BANDWIDTH;\n const currBandwidth = currentPlaylist.attributes.BANDWIDTH; // when switching down, if our buffer is lower than the high water line,\n // we can switch down\n\n if (nextBandwidth < currBandwidth && (!bufferBasedABR || forwardBuffer < bufferHighWaterLine)) {\n let logLine = `${sharedLogLine} as next bandwidth < current bandwidth (${nextBandwidth} < ${currBandwidth})`;\n if (bufferBasedABR) {\n logLine += ` and forwardBuffer < bufferHighWaterLine (${forwardBuffer} < ${bufferHighWaterLine})`;\n }\n log(logLine);\n return true;\n } // and if our buffer is higher than the low water line,\n // we can switch up\n\n if ((!bufferBasedABR || nextBandwidth > currBandwidth) && forwardBuffer >= bufferLowWaterLine) {\n let logLine = `${sharedLogLine} as forwardBuffer >= bufferLowWaterLine (${forwardBuffer} >= ${bufferLowWaterLine})`;\n if (bufferBasedABR) {\n logLine += ` and next bandwidth > current bandwidth (${nextBandwidth} > ${currBandwidth})`;\n }\n log(logLine);\n return true;\n }\n log(`not ${sharedLogLine} as no switching criteria met`);\n return false;\n};\n/**\n * the main playlist controller controller all interactons\n * between playlists and segmentloaders. At this time this mainly\n * involves a main playlist and a series of audio playlists\n * if they are available\n *\n * @class PlaylistController\n * @extends videojs.EventTarget\n */\n\nclass PlaylistController extends videojs.EventTarget {\n constructor(options) {\n super();\n const {\n src,\n withCredentials,\n tech,\n bandwidth,\n externVhs,\n useCueTags,\n playlistExclusionDuration,\n enableLowInitialPlaylist,\n sourceType,\n cacheEncryptionKeys,\n bufferBasedABR,\n leastPixelDiffSelector,\n captionServices\n } = options;\n if (!src) {\n throw new Error('A non-empty playlist URL or JSON manifest string is required');\n }\n let {\n maxPlaylistRetries\n } = options;\n if (maxPlaylistRetries === null || typeof maxPlaylistRetries === 'undefined') {\n maxPlaylistRetries = Infinity;\n }\n Vhs$1 = externVhs;\n this.bufferBasedABR = Boolean(bufferBasedABR);\n this.leastPixelDiffSelector = Boolean(leastPixelDiffSelector);\n this.withCredentials = withCredentials;\n this.tech_ = tech;\n this.vhs_ = tech.vhs;\n this.sourceType_ = sourceType;\n this.useCueTags_ = useCueTags;\n this.playlistExclusionDuration = playlistExclusionDuration;\n this.maxPlaylistRetries = maxPlaylistRetries;\n this.enableLowInitialPlaylist = enableLowInitialPlaylist;\n if (this.useCueTags_) {\n this.cueTagsTrack_ = this.tech_.addTextTrack('metadata', 'ad-cues');\n this.cueTagsTrack_.inBandMetadataTrackDispatchType = '';\n }\n this.requestOptions_ = {\n withCredentials,\n maxPlaylistRetries,\n timeout: null\n };\n this.on('error', this.pauseLoading);\n this.mediaTypes_ = createMediaTypes();\n this.mediaSource = new window$1.MediaSource();\n this.handleDurationChange_ = this.handleDurationChange_.bind(this);\n this.handleSourceOpen_ = this.handleSourceOpen_.bind(this);\n this.handleSourceEnded_ = this.handleSourceEnded_.bind(this);\n this.mediaSource.addEventListener('durationchange', this.handleDurationChange_); // load the media source into the player\n\n this.mediaSource.addEventListener('sourceopen', this.handleSourceOpen_);\n this.mediaSource.addEventListener('sourceended', this.handleSourceEnded_); // we don't have to handle sourceclose since dispose will handle termination of\n // everything, and the MediaSource should not be detached without a proper disposal\n\n this.seekable_ = createTimeRanges();\n this.hasPlayed_ = false;\n this.syncController_ = new SyncController(options);\n this.segmentMetadataTrack_ = tech.addRemoteTextTrack({\n kind: 'metadata',\n label: 'segment-metadata'\n }, false).track;\n this.decrypter_ = new Decrypter();\n this.sourceUpdater_ = new SourceUpdater(this.mediaSource);\n this.inbandTextTracks_ = {};\n this.timelineChangeController_ = new TimelineChangeController();\n const segmentLoaderSettings = {\n vhs: this.vhs_,\n parse708captions: options.parse708captions,\n useDtsForTimestampOffset: options.useDtsForTimestampOffset,\n calculateTimestampOffsetForEachSegment: options.calculateTimestampOffsetForEachSegment,\n captionServices,\n mediaSource: this.mediaSource,\n currentTime: this.tech_.currentTime.bind(this.tech_),\n seekable: () => this.seekable(),\n seeking: () => this.tech_.seeking(),\n duration: () => this.duration(),\n hasPlayed: () => this.hasPlayed_,\n goalBufferLength: () => this.goalBufferLength(),\n bandwidth,\n syncController: this.syncController_,\n decrypter: this.decrypter_,\n sourceType: this.sourceType_,\n inbandTextTracks: this.inbandTextTracks_,\n cacheEncryptionKeys,\n sourceUpdater: this.sourceUpdater_,\n timelineChangeController: this.timelineChangeController_,\n exactManifestTimings: options.exactManifestTimings,\n addMetadataToTextTrack: this.addMetadataToTextTrack.bind(this)\n }; // The source type check not only determines whether a special DASH playlist loader\n // should be used, but also covers the case where the provided src is a vhs-json\n // manifest object (instead of a URL). In the case of vhs-json, the default\n // PlaylistLoader should be used.\n\n this.mainPlaylistLoader_ = this.sourceType_ === 'dash' ? new DashPlaylistLoader(src, this.vhs_, merge(this.requestOptions_, {\n addMetadataToTextTrack: this.addMetadataToTextTrack.bind(this)\n })) : new PlaylistLoader(src, this.vhs_, merge(this.requestOptions_, {\n addDateRangesToTextTrack: this.addDateRangesToTextTrack_.bind(this)\n }));\n this.setupMainPlaylistLoaderListeners_(); // setup segment loaders\n // combined audio/video or just video when alternate audio track is selected\n\n this.mainSegmentLoader_ = new SegmentLoader(merge(segmentLoaderSettings, {\n segmentMetadataTrack: this.segmentMetadataTrack_,\n loaderType: 'main'\n }), options); // alternate audio track\n\n this.audioSegmentLoader_ = new SegmentLoader(merge(segmentLoaderSettings, {\n loaderType: 'audio'\n }), options);\n this.subtitleSegmentLoader_ = new VTTSegmentLoader(merge(segmentLoaderSettings, {\n loaderType: 'vtt',\n featuresNativeTextTracks: this.tech_.featuresNativeTextTracks,\n loadVttJs: () => new Promise((resolve, reject) => {\n function onLoad() {\n tech.off('vttjserror', onError);\n resolve();\n }\n function onError() {\n tech.off('vttjsloaded', onLoad);\n reject();\n }\n tech.one('vttjsloaded', onLoad);\n tech.one('vttjserror', onError); // safe to call multiple times, script will be loaded only once:\n\n tech.addWebVttScript_();\n })\n }), options);\n const getBandwidth = () => {\n return this.mainSegmentLoader_.bandwidth;\n };\n this.contentSteeringController_ = new ContentSteeringController(this.vhs_.xhr, getBandwidth);\n this.setupSegmentLoaderListeners_();\n if (this.bufferBasedABR) {\n this.mainPlaylistLoader_.one('loadedplaylist', () => this.startABRTimer_());\n this.tech_.on('pause', () => this.stopABRTimer_());\n this.tech_.on('play', () => this.startABRTimer_());\n } // Create SegmentLoader stat-getters\n // mediaRequests_\n // mediaRequestsAborted_\n // mediaRequestsTimedout_\n // mediaRequestsErrored_\n // mediaTransferDuration_\n // mediaBytesTransferred_\n // mediaAppends_\n\n loaderStats.forEach(stat => {\n this[stat + '_'] = sumLoaderStat.bind(this, stat);\n });\n this.logger_ = logger('pc');\n this.triggeredFmp4Usage = false;\n if (this.tech_.preload() === 'none') {\n this.loadOnPlay_ = () => {\n this.loadOnPlay_ = null;\n this.mainPlaylistLoader_.load();\n };\n this.tech_.one('play', this.loadOnPlay_);\n } else {\n this.mainPlaylistLoader_.load();\n }\n this.timeToLoadedData__ = -1;\n this.mainAppendsToLoadedData__ = -1;\n this.audioAppendsToLoadedData__ = -1;\n const event = this.tech_.preload() === 'none' ? 'play' : 'loadstart'; // start the first frame timer on loadstart or play (for preload none)\n\n this.tech_.one(event, () => {\n const timeToLoadedDataStart = Date.now();\n this.tech_.one('loadeddata', () => {\n this.timeToLoadedData__ = Date.now() - timeToLoadedDataStart;\n this.mainAppendsToLoadedData__ = this.mainSegmentLoader_.mediaAppends;\n this.audioAppendsToLoadedData__ = this.audioSegmentLoader_.mediaAppends;\n });\n });\n }\n mainAppendsToLoadedData_() {\n return this.mainAppendsToLoadedData__;\n }\n audioAppendsToLoadedData_() {\n return this.audioAppendsToLoadedData__;\n }\n appendsToLoadedData_() {\n const main = this.mainAppendsToLoadedData_();\n const audio = this.audioAppendsToLoadedData_();\n if (main === -1 || audio === -1) {\n return -1;\n }\n return main + audio;\n }\n timeToLoadedData_() {\n return this.timeToLoadedData__;\n }\n /**\n * Run selectPlaylist and switch to the new playlist if we should\n *\n * @param {string} [reason=abr] a reason for why the ABR check is made\n * @private\n */\n\n checkABR_(reason = 'abr') {\n const nextPlaylist = this.selectPlaylist();\n if (nextPlaylist && this.shouldSwitchToMedia_(nextPlaylist)) {\n this.switchMedia_(nextPlaylist, reason);\n }\n }\n switchMedia_(playlist, cause, delay) {\n const oldMedia = this.media();\n const oldId = oldMedia && (oldMedia.id || oldMedia.uri);\n const newId = playlist.id || playlist.uri;\n if (oldId && oldId !== newId) {\n this.logger_(`switch media ${oldId} -> ${newId} from ${cause}`);\n this.tech_.trigger({\n type: 'usage',\n name: `vhs-rendition-change-${cause}`\n });\n }\n this.mainPlaylistLoader_.media(playlist, delay);\n }\n /**\n * A function that ensures we switch our playlists inside of `mediaTypes`\n * to match the current `serviceLocation` provided by the contentSteering controller.\n * We want to check media types of `AUDIO`, `SUBTITLES`, and `CLOSED-CAPTIONS`.\n *\n * This should only be called on a DASH playback scenario while using content steering.\n * This is necessary due to differences in how media in HLS manifests are generally tied to\n * a video playlist, where in DASH that is not always the case.\n */\n\n switchMediaForDASHContentSteering_() {\n ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(type => {\n const mediaType = this.mediaTypes_[type];\n const activeGroup = mediaType ? mediaType.activeGroup() : null;\n const pathway = this.contentSteeringController_.getPathway();\n if (activeGroup && pathway) {\n // activeGroup can be an array or a single group\n const mediaPlaylists = activeGroup.length ? activeGroup[0].playlists : activeGroup.playlists;\n const dashMediaPlaylists = mediaPlaylists.filter(p => p.attributes.serviceLocation === pathway); // Switch the current active playlist to the correct CDN\n\n if (dashMediaPlaylists.length) {\n this.mediaTypes_[type].activePlaylistLoader.media(dashMediaPlaylists[0]);\n }\n }\n });\n }\n /**\n * Start a timer that periodically calls checkABR_\n *\n * @private\n */\n\n startABRTimer_() {\n this.stopABRTimer_();\n this.abrTimer_ = window$1.setInterval(() => this.checkABR_(), 250);\n }\n /**\n * Stop the timer that periodically calls checkABR_\n *\n * @private\n */\n\n stopABRTimer_() {\n // if we're scrubbing, we don't need to pause.\n // This getter will be added to Video.js in version 7.11.\n if (this.tech_.scrubbing && this.tech_.scrubbing()) {\n return;\n }\n window$1.clearInterval(this.abrTimer_);\n this.abrTimer_ = null;\n }\n /**\n * Get a list of playlists for the currently selected audio playlist\n *\n * @return {Array} the array of audio playlists\n */\n\n getAudioTrackPlaylists_() {\n const main = this.main();\n const defaultPlaylists = main && main.playlists || []; // if we don't have any audio groups then we can only\n // assume that the audio tracks are contained in main\n // playlist array, use that or an empty array.\n\n if (!main || !main.mediaGroups || !main.mediaGroups.AUDIO) {\n return defaultPlaylists;\n }\n const AUDIO = main.mediaGroups.AUDIO;\n const groupKeys = Object.keys(AUDIO);\n let track; // get the current active track\n\n if (Object.keys(this.mediaTypes_.AUDIO.groups).length) {\n track = this.mediaTypes_.AUDIO.activeTrack(); // or get the default track from main if mediaTypes_ isn't setup yet\n } else {\n // default group is `main` or just the first group.\n const defaultGroup = AUDIO.main || groupKeys.length && AUDIO[groupKeys[0]];\n for (const label in defaultGroup) {\n if (defaultGroup[label].default) {\n track = {\n label\n };\n break;\n }\n }\n } // no active track no playlists.\n\n if (!track) {\n return defaultPlaylists;\n }\n const playlists = []; // get all of the playlists that are possible for the\n // active track.\n\n for (const group in AUDIO) {\n if (AUDIO[group][track.label]) {\n const properties = AUDIO[group][track.label];\n if (properties.playlists && properties.playlists.length) {\n playlists.push.apply(playlists, properties.playlists);\n } else if (properties.uri) {\n playlists.push(properties);\n } else if (main.playlists.length) {\n // if an audio group does not have a uri\n // see if we have main playlists that use it as a group.\n // if we do then add those to the playlists list.\n for (let i = 0; i < main.playlists.length; i++) {\n const playlist = main.playlists[i];\n if (playlist.attributes && playlist.attributes.AUDIO && playlist.attributes.AUDIO === group) {\n playlists.push(playlist);\n }\n }\n }\n }\n }\n if (!playlists.length) {\n return defaultPlaylists;\n }\n return playlists;\n }\n /**\n * Register event handlers on the main playlist loader. A helper\n * function for construction time.\n *\n * @private\n */\n\n setupMainPlaylistLoaderListeners_() {\n this.mainPlaylistLoader_.on('loadedmetadata', () => {\n const media = this.mainPlaylistLoader_.media();\n const requestTimeout = media.targetDuration * 1.5 * 1000; // If we don't have any more available playlists, we don't want to\n // timeout the request.\n\n if (isLowestEnabledRendition(this.mainPlaylistLoader_.main, this.mainPlaylistLoader_.media())) {\n this.requestOptions_.timeout = 0;\n } else {\n this.requestOptions_.timeout = requestTimeout;\n } // if this isn't a live video and preload permits, start\n // downloading segments\n\n if (media.endList && this.tech_.preload() !== 'none') {\n this.mainSegmentLoader_.playlist(media, this.requestOptions_);\n this.mainSegmentLoader_.load();\n }\n setupMediaGroups({\n sourceType: this.sourceType_,\n segmentLoaders: {\n AUDIO: this.audioSegmentLoader_,\n SUBTITLES: this.subtitleSegmentLoader_,\n main: this.mainSegmentLoader_\n },\n tech: this.tech_,\n requestOptions: this.requestOptions_,\n mainPlaylistLoader: this.mainPlaylistLoader_,\n vhs: this.vhs_,\n main: this.main(),\n mediaTypes: this.mediaTypes_,\n excludePlaylist: this.excludePlaylist.bind(this)\n });\n this.triggerPresenceUsage_(this.main(), media);\n this.setupFirstPlay();\n if (!this.mediaTypes_.AUDIO.activePlaylistLoader || this.mediaTypes_.AUDIO.activePlaylistLoader.media()) {\n this.trigger('selectedinitialmedia');\n } else {\n // We must wait for the active audio playlist loader to\n // finish setting up before triggering this event so the\n // representations API and EME setup is correct\n this.mediaTypes_.AUDIO.activePlaylistLoader.one('loadedmetadata', () => {\n this.trigger('selectedinitialmedia');\n });\n }\n });\n this.mainPlaylistLoader_.on('loadedplaylist', () => {\n if (this.loadOnPlay_) {\n this.tech_.off('play', this.loadOnPlay_);\n }\n let updatedPlaylist = this.mainPlaylistLoader_.media();\n if (!updatedPlaylist) {\n this.initContentSteeringController_(); // exclude any variants that are not supported by the browser before selecting\n // an initial media as the playlist selectors do not consider browser support\n\n this.excludeUnsupportedVariants_();\n let selectedMedia;\n if (this.enableLowInitialPlaylist) {\n selectedMedia = this.selectInitialPlaylist();\n }\n if (!selectedMedia) {\n selectedMedia = this.selectPlaylist();\n }\n if (!selectedMedia || !this.shouldSwitchToMedia_(selectedMedia)) {\n return;\n }\n this.initialMedia_ = selectedMedia;\n this.switchMedia_(this.initialMedia_, 'initial'); // Under the standard case where a source URL is provided, loadedplaylist will\n // fire again since the playlist will be requested. In the case of vhs-json\n // (where the manifest object is provided as the source), when the media\n // playlist's `segments` list is already available, a media playlist won't be\n // requested, and loadedplaylist won't fire again, so the playlist handler must be\n // called on its own here.\n\n const haveJsonSource = this.sourceType_ === 'vhs-json' && this.initialMedia_.segments;\n if (!haveJsonSource) {\n return;\n }\n updatedPlaylist = this.initialMedia_;\n }\n this.handleUpdatedMediaPlaylist(updatedPlaylist);\n });\n this.mainPlaylistLoader_.on('error', () => {\n const error = this.mainPlaylistLoader_.error;\n this.excludePlaylist({\n playlistToExclude: error.playlist,\n error\n });\n });\n this.mainPlaylistLoader_.on('mediachanging', () => {\n this.mainSegmentLoader_.abort();\n this.mainSegmentLoader_.pause();\n });\n this.mainPlaylistLoader_.on('mediachange', () => {\n const media = this.mainPlaylistLoader_.media();\n const requestTimeout = media.targetDuration * 1.5 * 1000; // If we don't have any more available playlists, we don't want to\n // timeout the request.\n\n if (isLowestEnabledRendition(this.mainPlaylistLoader_.main, this.mainPlaylistLoader_.media())) {\n this.requestOptions_.timeout = 0;\n } else {\n this.requestOptions_.timeout = requestTimeout;\n }\n this.mainPlaylistLoader_.load(); // TODO: Create a new event on the PlaylistLoader that signals\n // that the segments have changed in some way and use that to\n // update the SegmentLoader instead of doing it twice here and\n // on `loadedplaylist`\n\n this.mainSegmentLoader_.playlist(media, this.requestOptions_);\n this.mainSegmentLoader_.load();\n this.tech_.trigger({\n type: 'mediachange',\n bubbles: true\n });\n });\n this.mainPlaylistLoader_.on('playlistunchanged', () => {\n const updatedPlaylist = this.mainPlaylistLoader_.media(); // ignore unchanged playlists that have already been\n // excluded for not-changing. We likely just have a really slowly updating\n // playlist.\n\n if (updatedPlaylist.lastExcludeReason_ === 'playlist-unchanged') {\n return;\n }\n const playlistOutdated = this.stuckAtPlaylistEnd_(updatedPlaylist);\n if (playlistOutdated) {\n // Playlist has stopped updating and we're stuck at its end. Try to\n // exclude it and switch to another playlist in the hope that that\n // one is updating (and give the player a chance to re-adjust to the\n // safe live point).\n this.excludePlaylist({\n error: {\n message: 'Playlist no longer updating.',\n reason: 'playlist-unchanged'\n }\n }); // useful for monitoring QoS\n\n this.tech_.trigger('playliststuck');\n }\n });\n this.mainPlaylistLoader_.on('renditiondisabled', () => {\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-rendition-disabled'\n });\n });\n this.mainPlaylistLoader_.on('renditionenabled', () => {\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-rendition-enabled'\n });\n });\n }\n /**\n * Given an updated media playlist (whether it was loaded for the first time, or\n * refreshed for live playlists), update any relevant properties and state to reflect\n * changes in the media that should be accounted for (e.g., cues and duration).\n *\n * @param {Object} updatedPlaylist the updated media playlist object\n *\n * @private\n */\n\n handleUpdatedMediaPlaylist(updatedPlaylist) {\n if (this.useCueTags_) {\n this.updateAdCues_(updatedPlaylist);\n } // TODO: Create a new event on the PlaylistLoader that signals\n // that the segments have changed in some way and use that to\n // update the SegmentLoader instead of doing it twice here and\n // on `mediachange`\n\n this.mainSegmentLoader_.playlist(updatedPlaylist, this.requestOptions_);\n this.updateDuration(!updatedPlaylist.endList); // If the player isn't paused, ensure that the segment loader is running,\n // as it is possible that it was temporarily stopped while waiting for\n // a playlist (e.g., in case the playlist errored and we re-requested it).\n\n if (!this.tech_.paused()) {\n this.mainSegmentLoader_.load();\n if (this.audioSegmentLoader_) {\n this.audioSegmentLoader_.load();\n }\n }\n }\n /**\n * A helper function for triggerring presence usage events once per source\n *\n * @private\n */\n\n triggerPresenceUsage_(main, media) {\n const mediaGroups = main.mediaGroups || {};\n let defaultDemuxed = true;\n const audioGroupKeys = Object.keys(mediaGroups.AUDIO);\n for (const mediaGroup in mediaGroups.AUDIO) {\n for (const label in mediaGroups.AUDIO[mediaGroup]) {\n const properties = mediaGroups.AUDIO[mediaGroup][label];\n if (!properties.uri) {\n defaultDemuxed = false;\n }\n }\n }\n if (defaultDemuxed) {\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-demuxed'\n });\n }\n if (Object.keys(mediaGroups.SUBTITLES).length) {\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-webvtt'\n });\n }\n if (Vhs$1.Playlist.isAes(media)) {\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-aes'\n });\n }\n if (audioGroupKeys.length && Object.keys(mediaGroups.AUDIO[audioGroupKeys[0]]).length > 1) {\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-alternate-audio'\n });\n }\n if (this.useCueTags_) {\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-playlist-cue-tags'\n });\n }\n }\n shouldSwitchToMedia_(nextPlaylist) {\n const currentPlaylist = this.mainPlaylistLoader_.media() || this.mainPlaylistLoader_.pendingMedia_;\n const currentTime = this.tech_.currentTime();\n const bufferLowWaterLine = this.bufferLowWaterLine();\n const bufferHighWaterLine = this.bufferHighWaterLine();\n const buffered = this.tech_.buffered();\n return shouldSwitchToMedia({\n buffered,\n currentTime,\n currentPlaylist,\n nextPlaylist,\n bufferLowWaterLine,\n bufferHighWaterLine,\n duration: this.duration(),\n bufferBasedABR: this.bufferBasedABR,\n log: this.logger_\n });\n }\n /**\n * Register event handlers on the segment loaders. A helper function\n * for construction time.\n *\n * @private\n */\n\n setupSegmentLoaderListeners_() {\n this.mainSegmentLoader_.on('bandwidthupdate', () => {\n // Whether or not buffer based ABR or another ABR is used, on a bandwidth change it's\n // useful to check to see if a rendition switch should be made.\n this.checkABR_('bandwidthupdate');\n this.tech_.trigger('bandwidthupdate');\n });\n this.mainSegmentLoader_.on('timeout', () => {\n if (this.bufferBasedABR) {\n // If a rendition change is needed, then it would've be done on `bandwidthupdate`.\n // Here the only consideration is that for buffer based ABR there's no guarantee\n // of an immediate switch (since the bandwidth is averaged with a timeout\n // bandwidth value of 1), so force a load on the segment loader to keep it going.\n this.mainSegmentLoader_.load();\n }\n }); // `progress` events are not reliable enough of a bandwidth measure to trigger buffer\n // based ABR.\n\n if (!this.bufferBasedABR) {\n this.mainSegmentLoader_.on('progress', () => {\n this.trigger('progress');\n });\n }\n this.mainSegmentLoader_.on('error', () => {\n const error = this.mainSegmentLoader_.error();\n this.excludePlaylist({\n playlistToExclude: error.playlist,\n error\n });\n });\n this.mainSegmentLoader_.on('appenderror', () => {\n this.error = this.mainSegmentLoader_.error_;\n this.trigger('error');\n });\n this.mainSegmentLoader_.on('syncinfoupdate', () => {\n this.onSyncInfoUpdate_();\n });\n this.mainSegmentLoader_.on('timestampoffset', () => {\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-timestamp-offset'\n });\n });\n this.audioSegmentLoader_.on('syncinfoupdate', () => {\n this.onSyncInfoUpdate_();\n });\n this.audioSegmentLoader_.on('appenderror', () => {\n this.error = this.audioSegmentLoader_.error_;\n this.trigger('error');\n });\n this.mainSegmentLoader_.on('ended', () => {\n this.logger_('main segment loader ended');\n this.onEndOfStream();\n });\n this.mainSegmentLoader_.on('earlyabort', event => {\n // never try to early abort with the new ABR algorithm\n if (this.bufferBasedABR) {\n return;\n }\n this.delegateLoaders_('all', ['abort']);\n this.excludePlaylist({\n error: {\n message: 'Aborted early because there isn\\'t enough bandwidth to complete ' + 'the request without rebuffering.'\n },\n playlistExclusionDuration: ABORT_EARLY_EXCLUSION_SECONDS\n });\n });\n const updateCodecs = () => {\n if (!this.sourceUpdater_.hasCreatedSourceBuffers()) {\n return this.tryToCreateSourceBuffers_();\n }\n const codecs = this.getCodecsOrExclude_(); // no codecs means that the playlist was excluded\n\n if (!codecs) {\n return;\n }\n this.sourceUpdater_.addOrChangeSourceBuffers(codecs);\n };\n this.mainSegmentLoader_.on('trackinfo', updateCodecs);\n this.audioSegmentLoader_.on('trackinfo', updateCodecs);\n this.mainSegmentLoader_.on('fmp4', () => {\n if (!this.triggeredFmp4Usage) {\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-fmp4'\n });\n this.triggeredFmp4Usage = true;\n }\n });\n this.audioSegmentLoader_.on('fmp4', () => {\n if (!this.triggeredFmp4Usage) {\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-fmp4'\n });\n this.triggeredFmp4Usage = true;\n }\n });\n this.audioSegmentLoader_.on('ended', () => {\n this.logger_('audioSegmentLoader ended');\n this.onEndOfStream();\n });\n }\n mediaSecondsLoaded_() {\n return Math.max(this.audioSegmentLoader_.mediaSecondsLoaded + this.mainSegmentLoader_.mediaSecondsLoaded);\n }\n /**\n * Call load on our SegmentLoaders\n */\n\n load() {\n this.mainSegmentLoader_.load();\n if (this.mediaTypes_.AUDIO.activePlaylistLoader) {\n this.audioSegmentLoader_.load();\n }\n if (this.mediaTypes_.SUBTITLES.activePlaylistLoader) {\n this.subtitleSegmentLoader_.load();\n }\n }\n /**\n * Re-tune playback quality level for the current player\n * conditions. This will reset the main segment loader\n * and the next segment position to the currentTime.\n * This is good for manual quality changes.\n *\n * @private\n */\n\n fastQualityChange_(media = this.selectPlaylist()) {\n if (media === this.mainPlaylistLoader_.media()) {\n this.logger_('skipping fastQualityChange because new media is same as old');\n return;\n }\n this.switchMedia_(media, 'fast-quality'); // Reset main segment loader properties and next segment position information.\n // Don't need to reset audio as it is reset when media changes.\n // We resetLoaderProperties separately here as we want to fetch init segments if\n // necessary and ensure we're not in an ended state when we switch playlists.\n\n this.resetMainLoaderReplaceSegments();\n }\n /**\n * Sets the replaceUntil flag on the main segment soader to the buffered end\n * and resets the main segment loaders properties.\n */\n\n resetMainLoaderReplaceSegments() {\n const buffered = this.tech_.buffered();\n const bufferedEnd = buffered.end(buffered.length - 1); // Set the replace segments flag to the buffered end, this forces fetchAtBuffer\n // on the main loader to remain, false after the resetLoader call, until we have\n // replaced all content buffered ahead of the currentTime.\n\n this.mainSegmentLoader_.replaceSegmentsUntil = bufferedEnd;\n this.mainSegmentLoader_.resetLoaderProperties();\n this.mainSegmentLoader_.resetLoader();\n }\n /**\n * Begin playback.\n */\n\n play() {\n if (this.setupFirstPlay()) {\n return;\n }\n if (this.tech_.ended()) {\n this.tech_.setCurrentTime(0);\n }\n if (this.hasPlayed_) {\n this.load();\n }\n const seekable = this.tech_.seekable(); // if the viewer has paused and we fell out of the live window,\n // seek forward to the live point\n\n if (this.tech_.duration() === Infinity) {\n if (this.tech_.currentTime() < seekable.start(0)) {\n return this.tech_.setCurrentTime(seekable.end(seekable.length - 1));\n }\n }\n }\n /**\n * Seek to the latest media position if this is a live video and the\n * player and video are loaded and initialized.\n */\n\n setupFirstPlay() {\n const media = this.mainPlaylistLoader_.media(); // Check that everything is ready to begin buffering for the first call to play\n // If 1) there is no active media\n // 2) the player is paused\n // 3) the first play has already been setup\n // then exit early\n\n if (!media || this.tech_.paused() || this.hasPlayed_) {\n return false;\n } // when the video is a live stream and/or has a start time\n\n if (!media.endList || media.start) {\n const seekable = this.seekable();\n if (!seekable.length) {\n // without a seekable range, the player cannot seek to begin buffering at the\n // live or start point\n return false;\n }\n const seekableEnd = seekable.end(0);\n let startPoint = seekableEnd;\n if (media.start) {\n const offset = media.start.timeOffset;\n if (offset < 0) {\n startPoint = Math.max(seekableEnd + offset, seekable.start(0));\n } else {\n startPoint = Math.min(seekableEnd, offset);\n }\n } // trigger firstplay to inform the source handler to ignore the next seek event\n\n this.trigger('firstplay'); // seek to the live point\n\n this.tech_.setCurrentTime(startPoint);\n }\n this.hasPlayed_ = true; // we can begin loading now that everything is ready\n\n this.load();\n return true;\n }\n /**\n * handle the sourceopen event on the MediaSource\n *\n * @private\n */\n\n handleSourceOpen_() {\n // Only attempt to create the source buffer if none already exist.\n // handleSourceOpen is also called when we are \"re-opening\" a source buffer\n // after `endOfStream` has been called (in response to a seek for instance)\n this.tryToCreateSourceBuffers_(); // if autoplay is enabled, begin playback. This is duplicative of\n // code in video.js but is required because play() must be invoked\n // *after* the media source has opened.\n\n if (this.tech_.autoplay()) {\n const playPromise = this.tech_.play(); // Catch/silence error when a pause interrupts a play request\n // on browsers which return a promise\n\n if (typeof playPromise !== 'undefined' && typeof playPromise.then === 'function') {\n playPromise.then(null, e => {});\n }\n }\n this.trigger('sourceopen');\n }\n /**\n * handle the sourceended event on the MediaSource\n *\n * @private\n */\n\n handleSourceEnded_() {\n if (!this.inbandTextTracks_.metadataTrack_) {\n return;\n }\n const cues = this.inbandTextTracks_.metadataTrack_.cues;\n if (!cues || !cues.length) {\n return;\n }\n const duration = this.duration();\n cues[cues.length - 1].endTime = isNaN(duration) || Math.abs(duration) === Infinity ? Number.MAX_VALUE : duration;\n }\n /**\n * handle the durationchange event on the MediaSource\n *\n * @private\n */\n\n handleDurationChange_() {\n this.tech_.trigger('durationchange');\n }\n /**\n * Calls endOfStream on the media source when all active stream types have called\n * endOfStream\n *\n * @param {string} streamType\n * Stream type of the segment loader that called endOfStream\n * @private\n */\n\n onEndOfStream() {\n let isEndOfStream = this.mainSegmentLoader_.ended_;\n if (this.mediaTypes_.AUDIO.activePlaylistLoader) {\n const mainMediaInfo = this.mainSegmentLoader_.getCurrentMediaInfo_(); // if the audio playlist loader exists, then alternate audio is active\n\n if (!mainMediaInfo || mainMediaInfo.hasVideo) {\n // if we do not know if the main segment loader contains video yet or if we\n // definitively know the main segment loader contains video, then we need to wait\n // for both main and audio segment loaders to call endOfStream\n isEndOfStream = isEndOfStream && this.audioSegmentLoader_.ended_;\n } else {\n // otherwise just rely on the audio loader\n isEndOfStream = this.audioSegmentLoader_.ended_;\n }\n }\n if (!isEndOfStream) {\n return;\n }\n this.stopABRTimer_();\n this.sourceUpdater_.endOfStream();\n }\n /**\n * Check if a playlist has stopped being updated\n *\n * @param {Object} playlist the media playlist object\n * @return {boolean} whether the playlist has stopped being updated or not\n */\n\n stuckAtPlaylistEnd_(playlist) {\n const seekable = this.seekable();\n if (!seekable.length) {\n // playlist doesn't have enough information to determine whether we are stuck\n return false;\n }\n const expired = this.syncController_.getExpiredTime(playlist, this.duration());\n if (expired === null) {\n return false;\n } // does not use the safe live end to calculate playlist end, since we\n // don't want to say we are stuck while there is still content\n\n const absolutePlaylistEnd = Vhs$1.Playlist.playlistEnd(playlist, expired);\n const currentTime = this.tech_.currentTime();\n const buffered = this.tech_.buffered();\n if (!buffered.length) {\n // return true if the playhead reached the absolute end of the playlist\n return absolutePlaylistEnd - currentTime <= SAFE_TIME_DELTA;\n }\n const bufferedEnd = buffered.end(buffered.length - 1); // return true if there is too little buffer left and buffer has reached absolute\n // end of playlist\n\n return bufferedEnd - currentTime <= SAFE_TIME_DELTA && absolutePlaylistEnd - bufferedEnd <= SAFE_TIME_DELTA;\n }\n /**\n * Exclude a playlist for a set amount of time, making it unavailable for selection by\n * the rendition selection algorithm, then force a new playlist (rendition) selection.\n *\n * @param {Object=} playlistToExclude\n * the playlist to exclude, defaults to the currently selected playlist\n * @param {Object=} error\n * an optional error\n * @param {number=} playlistExclusionDuration\n * an optional number of seconds to exclude the playlist\n */\n\n excludePlaylist({\n playlistToExclude = this.mainPlaylistLoader_.media(),\n error = {},\n playlistExclusionDuration\n }) {\n // If the `error` was generated by the playlist loader, it will contain\n // the playlist we were trying to load (but failed) and that should be\n // excluded instead of the currently selected playlist which is likely\n // out-of-date in this scenario\n playlistToExclude = playlistToExclude || this.mainPlaylistLoader_.media();\n playlistExclusionDuration = playlistExclusionDuration || error.playlistExclusionDuration || this.playlistExclusionDuration; // If there is no current playlist, then an error occurred while we were\n // trying to load the main OR while we were disposing of the tech\n\n if (!playlistToExclude) {\n this.error = error;\n if (this.mediaSource.readyState !== 'open') {\n this.trigger('error');\n } else {\n this.sourceUpdater_.endOfStream('network');\n }\n return;\n }\n playlistToExclude.playlistErrors_++;\n const playlists = this.mainPlaylistLoader_.main.playlists;\n const enabledPlaylists = playlists.filter(isEnabled);\n const isFinalRendition = enabledPlaylists.length === 1 && enabledPlaylists[0] === playlistToExclude; // Don't exclude the only playlist unless it was excluded\n // forever\n\n if (playlists.length === 1 && playlistExclusionDuration !== Infinity) {\n videojs.log.warn(`Problem encountered with playlist ${playlistToExclude.id}. ` + 'Trying again since it is the only playlist.');\n this.tech_.trigger('retryplaylist'); // if this is a final rendition, we should delay\n\n return this.mainPlaylistLoader_.load(isFinalRendition);\n }\n if (isFinalRendition) {\n // If we're content steering, try other pathways.\n if (this.main().contentSteering) {\n const pathway = this.pathwayAttribute_(playlistToExclude); // Ignore at least 1 steering manifest refresh.\n\n const reIncludeDelay = this.contentSteeringController_.steeringManifest.ttl * 1000;\n this.contentSteeringController_.excludePathway(pathway);\n this.excludeThenChangePathway_();\n setTimeout(() => {\n this.contentSteeringController_.addAvailablePathway(pathway);\n }, reIncludeDelay);\n return;\n } // Since we're on the final non-excluded playlist, and we're about to exclude\n // it, instead of erring the player or retrying this playlist, clear out the current\n // exclusion list. This allows other playlists to be attempted in case any have been\n // fixed.\n\n let reincluded = false;\n playlists.forEach(playlist => {\n // skip current playlist which is about to be excluded\n if (playlist === playlistToExclude) {\n return;\n }\n const excludeUntil = playlist.excludeUntil; // a playlist cannot be reincluded if it wasn't excluded to begin with.\n\n if (typeof excludeUntil !== 'undefined' && excludeUntil !== Infinity) {\n reincluded = true;\n delete playlist.excludeUntil;\n }\n });\n if (reincluded) {\n videojs.log.warn('Removing other playlists from the exclusion list because the last ' + 'rendition is about to be excluded.'); // Technically we are retrying a playlist, in that we are simply retrying a previous\n // playlist. This is needed for users relying on the retryplaylist event to catch a\n // case where the player might be stuck and looping through \"dead\" playlists.\n\n this.tech_.trigger('retryplaylist');\n }\n } // Exclude this playlist\n\n let excludeUntil;\n if (playlistToExclude.playlistErrors_ > this.maxPlaylistRetries) {\n excludeUntil = Infinity;\n } else {\n excludeUntil = Date.now() + playlistExclusionDuration * 1000;\n }\n playlistToExclude.excludeUntil = excludeUntil;\n if (error.reason) {\n playlistToExclude.lastExcludeReason_ = error.reason;\n }\n this.tech_.trigger('excludeplaylist');\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-rendition-excluded'\n }); // TODO: only load a new playlist if we're excluding the current playlist\n // If this function was called with a playlist that's not the current active playlist\n // (e.g., media().id !== playlistToExclude.id),\n // then a new playlist should not be selected and loaded, as there's nothing wrong with the current playlist.\n\n const nextPlaylist = this.selectPlaylist();\n if (!nextPlaylist) {\n this.error = 'Playback cannot continue. No available working or supported playlists.';\n this.trigger('error');\n return;\n }\n const logFn = error.internal ? this.logger_ : videojs.log.warn;\n const errorMessage = error.message ? ' ' + error.message : '';\n logFn(`${error.internal ? 'Internal problem' : 'Problem'} encountered with playlist ${playlistToExclude.id}.` + `${errorMessage} Switching to playlist ${nextPlaylist.id}.`); // if audio group changed reset audio loaders\n\n if (nextPlaylist.attributes.AUDIO !== playlistToExclude.attributes.AUDIO) {\n this.delegateLoaders_('audio', ['abort', 'pause']);\n } // if subtitle group changed reset subtitle loaders\n\n if (nextPlaylist.attributes.SUBTITLES !== playlistToExclude.attributes.SUBTITLES) {\n this.delegateLoaders_('subtitle', ['abort', 'pause']);\n }\n this.delegateLoaders_('main', ['abort', 'pause']);\n const delayDuration = nextPlaylist.targetDuration / 2 * 1000 || 5 * 1000;\n const shouldDelay = typeof nextPlaylist.lastRequest === 'number' && Date.now() - nextPlaylist.lastRequest <= delayDuration; // delay if it's a final rendition or if the last refresh is sooner than half targetDuration\n\n return this.switchMedia_(nextPlaylist, 'exclude', isFinalRendition || shouldDelay);\n }\n /**\n * Pause all segment/playlist loaders\n */\n\n pauseLoading() {\n this.delegateLoaders_('all', ['abort', 'pause']);\n this.stopABRTimer_();\n }\n /**\n * Call a set of functions in order on playlist loaders, segment loaders,\n * or both types of loaders.\n *\n * @param {string} filter\n * Filter loaders that should call fnNames using a string. Can be:\n * * all - run on all loaders\n * * audio - run on all audio loaders\n * * subtitle - run on all subtitle loaders\n * * main - run on the main loaders\n *\n * @param {Array|string} fnNames\n * A string or array of function names to call.\n */\n\n delegateLoaders_(filter, fnNames) {\n const loaders = [];\n const dontFilterPlaylist = filter === 'all';\n if (dontFilterPlaylist || filter === 'main') {\n loaders.push(this.mainPlaylistLoader_);\n }\n const mediaTypes = [];\n if (dontFilterPlaylist || filter === 'audio') {\n mediaTypes.push('AUDIO');\n }\n if (dontFilterPlaylist || filter === 'subtitle') {\n mediaTypes.push('CLOSED-CAPTIONS');\n mediaTypes.push('SUBTITLES');\n }\n mediaTypes.forEach(mediaType => {\n const loader = this.mediaTypes_[mediaType] && this.mediaTypes_[mediaType].activePlaylistLoader;\n if (loader) {\n loaders.push(loader);\n }\n });\n ['main', 'audio', 'subtitle'].forEach(name => {\n const loader = this[`${name}SegmentLoader_`];\n if (loader && (filter === name || filter === 'all')) {\n loaders.push(loader);\n }\n });\n loaders.forEach(loader => fnNames.forEach(fnName => {\n if (typeof loader[fnName] === 'function') {\n loader[fnName]();\n }\n }));\n }\n /**\n * set the current time on all segment loaders\n *\n * @param {TimeRange} currentTime the current time to set\n * @return {TimeRange} the current time\n */\n\n setCurrentTime(currentTime) {\n const buffered = findRange(this.tech_.buffered(), currentTime);\n if (!(this.mainPlaylistLoader_ && this.mainPlaylistLoader_.media())) {\n // return immediately if the metadata is not ready yet\n return 0;\n } // it's clearly an edge-case but don't thrown an error if asked to\n // seek within an empty playlist\n\n if (!this.mainPlaylistLoader_.media().segments) {\n return 0;\n } // if the seek location is already buffered, continue buffering as usual\n\n if (buffered && buffered.length) {\n return currentTime;\n } // cancel outstanding requests so we begin buffering at the new\n // location\n\n this.mainSegmentLoader_.resetEverything();\n if (this.mediaTypes_.AUDIO.activePlaylistLoader) {\n this.audioSegmentLoader_.resetEverything();\n }\n if (this.mediaTypes_.SUBTITLES.activePlaylistLoader) {\n this.subtitleSegmentLoader_.resetEverything();\n } // start segment loader loading in case they are paused\n\n this.load();\n }\n /**\n * get the current duration\n *\n * @return {TimeRange} the duration\n */\n\n duration() {\n if (!this.mainPlaylistLoader_) {\n return 0;\n }\n const media = this.mainPlaylistLoader_.media();\n if (!media) {\n // no playlists loaded yet, so can't determine a duration\n return 0;\n } // Don't rely on the media source for duration in the case of a live playlist since\n // setting the native MediaSource's duration to infinity ends up with consequences to\n // seekable behavior. See https://github.com/w3c/media-source/issues/5 for details.\n //\n // This is resolved in the spec by https://github.com/w3c/media-source/pull/92,\n // however, few browsers have support for setLiveSeekableRange()\n // https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/setLiveSeekableRange\n //\n // Until a time when the duration of the media source can be set to infinity, and a\n // seekable range specified across browsers, just return Infinity.\n\n if (!media.endList) {\n return Infinity;\n } // Since this is a VOD video, it is safe to rely on the media source's duration (if\n // available). If it's not available, fall back to a playlist-calculated estimate.\n\n if (this.mediaSource) {\n return this.mediaSource.duration;\n }\n return Vhs$1.Playlist.duration(media);\n }\n /**\n * check the seekable range\n *\n * @return {TimeRange} the seekable range\n */\n\n seekable() {\n return this.seekable_;\n }\n onSyncInfoUpdate_() {\n let audioSeekable; // TODO check for creation of both source buffers before updating seekable\n //\n // A fix was made to this function where a check for\n // this.sourceUpdater_.hasCreatedSourceBuffers\n // was added to ensure that both source buffers were created before seekable was\n // updated. However, it originally had a bug where it was checking for a true and\n // returning early instead of checking for false. Setting it to check for false to\n // return early though created other issues. A call to play() would check for seekable\n // end without verifying that a seekable range was present. In addition, even checking\n // for that didn't solve some issues, as handleFirstPlay is sometimes worked around\n // due to a media update calling load on the segment loaders, skipping a seek to live,\n // thereby starting live streams at the beginning of the stream rather than at the end.\n //\n // This conditional should be fixed to wait for the creation of two source buffers at\n // the same time as the other sections of code are fixed to properly seek to live and\n // not throw an error due to checking for a seekable end when no seekable range exists.\n //\n // For now, fall back to the older behavior, with the understanding that the seekable\n // range may not be completely correct, leading to a suboptimal initial live point.\n\n if (!this.mainPlaylistLoader_) {\n return;\n }\n let media = this.mainPlaylistLoader_.media();\n if (!media) {\n return;\n }\n let expired = this.syncController_.getExpiredTime(media, this.duration());\n if (expired === null) {\n // not enough information to update seekable\n return;\n }\n const main = this.mainPlaylistLoader_.main;\n const mainSeekable = Vhs$1.Playlist.seekable(media, expired, Vhs$1.Playlist.liveEdgeDelay(main, media));\n if (mainSeekable.length === 0) {\n return;\n }\n if (this.mediaTypes_.AUDIO.activePlaylistLoader) {\n media = this.mediaTypes_.AUDIO.activePlaylistLoader.media();\n expired = this.syncController_.getExpiredTime(media, this.duration());\n if (expired === null) {\n return;\n }\n audioSeekable = Vhs$1.Playlist.seekable(media, expired, Vhs$1.Playlist.liveEdgeDelay(main, media));\n if (audioSeekable.length === 0) {\n return;\n }\n }\n let oldEnd;\n let oldStart;\n if (this.seekable_ && this.seekable_.length) {\n oldEnd = this.seekable_.end(0);\n oldStart = this.seekable_.start(0);\n }\n if (!audioSeekable) {\n // seekable has been calculated based on buffering video data so it\n // can be returned directly\n this.seekable_ = mainSeekable;\n } else if (audioSeekable.start(0) > mainSeekable.end(0) || mainSeekable.start(0) > audioSeekable.end(0)) {\n // seekables are pretty far off, rely on main\n this.seekable_ = mainSeekable;\n } else {\n this.seekable_ = createTimeRanges([[audioSeekable.start(0) > mainSeekable.start(0) ? audioSeekable.start(0) : mainSeekable.start(0), audioSeekable.end(0) < mainSeekable.end(0) ? audioSeekable.end(0) : mainSeekable.end(0)]]);\n } // seekable is the same as last time\n\n if (this.seekable_ && this.seekable_.length) {\n if (this.seekable_.end(0) === oldEnd && this.seekable_.start(0) === oldStart) {\n return;\n }\n }\n this.logger_(`seekable updated [${printableRange(this.seekable_)}]`);\n this.tech_.trigger('seekablechanged');\n }\n /**\n * Update the player duration\n */\n\n updateDuration(isLive) {\n if (this.updateDuration_) {\n this.mediaSource.removeEventListener('sourceopen', this.updateDuration_);\n this.updateDuration_ = null;\n }\n if (this.mediaSource.readyState !== 'open') {\n this.updateDuration_ = this.updateDuration.bind(this, isLive);\n this.mediaSource.addEventListener('sourceopen', this.updateDuration_);\n return;\n }\n if (isLive) {\n const seekable = this.seekable();\n if (!seekable.length) {\n return;\n } // Even in the case of a live playlist, the native MediaSource's duration should not\n // be set to Infinity (even though this would be expected for a live playlist), since\n // setting the native MediaSource's duration to infinity ends up with consequences to\n // seekable behavior. See https://github.com/w3c/media-source/issues/5 for details.\n //\n // This is resolved in the spec by https://github.com/w3c/media-source/pull/92,\n // however, few browsers have support for setLiveSeekableRange()\n // https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/setLiveSeekableRange\n //\n // Until a time when the duration of the media source can be set to infinity, and a\n // seekable range specified across browsers, the duration should be greater than or\n // equal to the last possible seekable value.\n // MediaSource duration starts as NaN\n // It is possible (and probable) that this case will never be reached for many\n // sources, since the MediaSource reports duration as the highest value without\n // accounting for timestamp offset. For example, if the timestamp offset is -100 and\n // we buffered times 0 to 100 with real times of 100 to 200, even though current\n // time will be between 0 and 100, the native media source may report the duration\n // as 200. However, since we report duration separate from the media source (as\n // Infinity), and as long as the native media source duration value is greater than\n // our reported seekable range, seeks will work as expected. The large number as\n // duration for live is actually a strategy used by some players to work around the\n // issue of live seekable ranges cited above.\n\n if (isNaN(this.mediaSource.duration) || this.mediaSource.duration < seekable.end(seekable.length - 1)) {\n this.sourceUpdater_.setDuration(seekable.end(seekable.length - 1));\n }\n return;\n }\n const buffered = this.tech_.buffered();\n let duration = Vhs$1.Playlist.duration(this.mainPlaylistLoader_.media());\n if (buffered.length > 0) {\n duration = Math.max(duration, buffered.end(buffered.length - 1));\n }\n if (this.mediaSource.duration !== duration) {\n this.sourceUpdater_.setDuration(duration);\n }\n }\n /**\n * dispose of the PlaylistController and everything\n * that it controls\n */\n\n dispose() {\n this.trigger('dispose');\n this.decrypter_.terminate();\n this.mainPlaylistLoader_.dispose();\n this.mainSegmentLoader_.dispose();\n this.contentSteeringController_.dispose();\n if (this.loadOnPlay_) {\n this.tech_.off('play', this.loadOnPlay_);\n }\n ['AUDIO', 'SUBTITLES'].forEach(type => {\n const groups = this.mediaTypes_[type].groups;\n for (const id in groups) {\n groups[id].forEach(group => {\n if (group.playlistLoader) {\n group.playlistLoader.dispose();\n }\n });\n }\n });\n this.audioSegmentLoader_.dispose();\n this.subtitleSegmentLoader_.dispose();\n this.sourceUpdater_.dispose();\n this.timelineChangeController_.dispose();\n this.stopABRTimer_();\n if (this.updateDuration_) {\n this.mediaSource.removeEventListener('sourceopen', this.updateDuration_);\n }\n this.mediaSource.removeEventListener('durationchange', this.handleDurationChange_); // load the media source into the player\n\n this.mediaSource.removeEventListener('sourceopen', this.handleSourceOpen_);\n this.mediaSource.removeEventListener('sourceended', this.handleSourceEnded_);\n this.off();\n }\n /**\n * return the main playlist object if we have one\n *\n * @return {Object} the main playlist object that we parsed\n */\n\n main() {\n return this.mainPlaylistLoader_.main;\n }\n /**\n * return the currently selected playlist\n *\n * @return {Object} the currently selected playlist object that we parsed\n */\n\n media() {\n // playlist loader will not return media if it has not been fully loaded\n return this.mainPlaylistLoader_.media() || this.initialMedia_;\n }\n areMediaTypesKnown_() {\n const usingAudioLoader = !!this.mediaTypes_.AUDIO.activePlaylistLoader;\n const hasMainMediaInfo = !!this.mainSegmentLoader_.getCurrentMediaInfo_(); // if we are not using an audio loader, then we have audio media info\n // otherwise check on the segment loader.\n\n const hasAudioMediaInfo = !usingAudioLoader ? true : !!this.audioSegmentLoader_.getCurrentMediaInfo_(); // one or both loaders has not loaded sufficently to get codecs\n\n if (!hasMainMediaInfo || !hasAudioMediaInfo) {\n return false;\n }\n return true;\n }\n getCodecsOrExclude_() {\n const media = {\n main: this.mainSegmentLoader_.getCurrentMediaInfo_() || {},\n audio: this.audioSegmentLoader_.getCurrentMediaInfo_() || {}\n };\n const playlist = this.mainSegmentLoader_.getPendingSegmentPlaylist() || this.media(); // set \"main\" media equal to video\n\n media.video = media.main;\n const playlistCodecs = codecsForPlaylist(this.main(), playlist);\n const codecs = {};\n const usingAudioLoader = !!this.mediaTypes_.AUDIO.activePlaylistLoader;\n if (media.main.hasVideo) {\n codecs.video = playlistCodecs.video || media.main.videoCodec || DEFAULT_VIDEO_CODEC;\n }\n if (media.main.isMuxed) {\n codecs.video += `,${playlistCodecs.audio || media.main.audioCodec || DEFAULT_AUDIO_CODEC}`;\n }\n if (media.main.hasAudio && !media.main.isMuxed || media.audio.hasAudio || usingAudioLoader) {\n codecs.audio = playlistCodecs.audio || media.main.audioCodec || media.audio.audioCodec || DEFAULT_AUDIO_CODEC; // set audio isFmp4 so we use the correct \"supports\" function below\n\n media.audio.isFmp4 = media.main.hasAudio && !media.main.isMuxed ? media.main.isFmp4 : media.audio.isFmp4;\n } // no codecs, no playback.\n\n if (!codecs.audio && !codecs.video) {\n this.excludePlaylist({\n playlistToExclude: playlist,\n error: {\n message: 'Could not determine codecs for playlist.'\n },\n playlistExclusionDuration: Infinity\n });\n return;\n } // fmp4 relies on browser support, while ts relies on muxer support\n\n const supportFunction = (isFmp4, codec) => isFmp4 ? browserSupportsCodec(codec) : muxerSupportsCodec(codec);\n const unsupportedCodecs = {};\n let unsupportedAudio;\n ['video', 'audio'].forEach(function (type) {\n if (codecs.hasOwnProperty(type) && !supportFunction(media[type].isFmp4, codecs[type])) {\n const supporter = media[type].isFmp4 ? 'browser' : 'muxer';\n unsupportedCodecs[supporter] = unsupportedCodecs[supporter] || [];\n unsupportedCodecs[supporter].push(codecs[type]);\n if (type === 'audio') {\n unsupportedAudio = supporter;\n }\n }\n });\n if (usingAudioLoader && unsupportedAudio && playlist.attributes.AUDIO) {\n const audioGroup = playlist.attributes.AUDIO;\n this.main().playlists.forEach(variant => {\n const variantAudioGroup = variant.attributes && variant.attributes.AUDIO;\n if (variantAudioGroup === audioGroup && variant !== playlist) {\n variant.excludeUntil = Infinity;\n }\n });\n this.logger_(`excluding audio group ${audioGroup} as ${unsupportedAudio} does not support codec(s): \"${codecs.audio}\"`);\n } // if we have any unsupported codecs exclude this playlist.\n\n if (Object.keys(unsupportedCodecs).length) {\n const message = Object.keys(unsupportedCodecs).reduce((acc, supporter) => {\n if (acc) {\n acc += ', ';\n }\n acc += `${supporter} does not support codec(s): \"${unsupportedCodecs[supporter].join(',')}\"`;\n return acc;\n }, '') + '.';\n this.excludePlaylist({\n playlistToExclude: playlist,\n error: {\n internal: true,\n message\n },\n playlistExclusionDuration: Infinity\n });\n return;\n } // check if codec switching is happening\n\n if (this.sourceUpdater_.hasCreatedSourceBuffers() && !this.sourceUpdater_.canChangeType()) {\n const switchMessages = [];\n ['video', 'audio'].forEach(type => {\n const newCodec = (parseCodecs(this.sourceUpdater_.codecs[type] || '')[0] || {}).type;\n const oldCodec = (parseCodecs(codecs[type] || '')[0] || {}).type;\n if (newCodec && oldCodec && newCodec.toLowerCase() !== oldCodec.toLowerCase()) {\n switchMessages.push(`\"${this.sourceUpdater_.codecs[type]}\" -> \"${codecs[type]}\"`);\n }\n });\n if (switchMessages.length) {\n this.excludePlaylist({\n playlistToExclude: playlist,\n error: {\n message: `Codec switching not supported: ${switchMessages.join(', ')}.`,\n internal: true\n },\n playlistExclusionDuration: Infinity\n });\n return;\n }\n } // TODO: when using the muxer shouldn't we just return\n // the codecs that the muxer outputs?\n\n return codecs;\n }\n /**\n * Create source buffers and exlude any incompatible renditions.\n *\n * @private\n */\n\n tryToCreateSourceBuffers_() {\n // media source is not ready yet or sourceBuffers are already\n // created.\n if (this.mediaSource.readyState !== 'open' || this.sourceUpdater_.hasCreatedSourceBuffers()) {\n return;\n }\n if (!this.areMediaTypesKnown_()) {\n return;\n }\n const codecs = this.getCodecsOrExclude_(); // no codecs means that the playlist was excluded\n\n if (!codecs) {\n return;\n }\n this.sourceUpdater_.createSourceBuffers(codecs);\n const codecString = [codecs.video, codecs.audio].filter(Boolean).join(',');\n this.excludeIncompatibleVariants_(codecString);\n }\n /**\n * Excludes playlists with codecs that are unsupported by the muxer and browser.\n */\n\n excludeUnsupportedVariants_() {\n const playlists = this.main().playlists;\n const ids = []; // TODO: why don't we have a property to loop through all\n // playlist? Why did we ever mix indexes and keys?\n\n Object.keys(playlists).forEach(key => {\n const variant = playlists[key]; // check if we already processed this playlist.\n\n if (ids.indexOf(variant.id) !== -1) {\n return;\n }\n ids.push(variant.id);\n const codecs = codecsForPlaylist(this.main, variant);\n const unsupported = [];\n if (codecs.audio && !muxerSupportsCodec(codecs.audio) && !browserSupportsCodec(codecs.audio)) {\n unsupported.push(`audio codec ${codecs.audio}`);\n }\n if (codecs.video && !muxerSupportsCodec(codecs.video) && !browserSupportsCodec(codecs.video)) {\n unsupported.push(`video codec ${codecs.video}`);\n }\n if (codecs.text && codecs.text === 'stpp.ttml.im1t') {\n unsupported.push(`text codec ${codecs.text}`);\n }\n if (unsupported.length) {\n variant.excludeUntil = Infinity;\n this.logger_(`excluding ${variant.id} for unsupported: ${unsupported.join(', ')}`);\n }\n });\n }\n /**\n * Exclude playlists that are known to be codec or\n * stream-incompatible with the SourceBuffer configuration. For\n * instance, Media Source Extensions would cause the video element to\n * stall waiting for video data if you switched from a variant with\n * video and audio to an audio-only one.\n *\n * @param {Object} media a media playlist compatible with the current\n * set of SourceBuffers. Variants in the current main playlist that\n * do not appear to have compatible codec or stream configurations\n * will be excluded from the default playlist selection algorithm\n * indefinitely.\n * @private\n */\n\n excludeIncompatibleVariants_(codecString) {\n const ids = [];\n const playlists = this.main().playlists;\n const codecs = unwrapCodecList(parseCodecs(codecString));\n const codecCount_ = codecCount(codecs);\n const videoDetails = codecs.video && parseCodecs(codecs.video)[0] || null;\n const audioDetails = codecs.audio && parseCodecs(codecs.audio)[0] || null;\n Object.keys(playlists).forEach(key => {\n const variant = playlists[key]; // check if we already processed this playlist.\n // or it if it is already excluded forever.\n\n if (ids.indexOf(variant.id) !== -1 || variant.excludeUntil === Infinity) {\n return;\n }\n ids.push(variant.id);\n const exclusionReasons = []; // get codecs from the playlist for this variant\n\n const variantCodecs = codecsForPlaylist(this.mainPlaylistLoader_.main, variant);\n const variantCodecCount = codecCount(variantCodecs); // if no codecs are listed, we cannot determine that this\n // variant is incompatible. Wait for mux.js to probe\n\n if (!variantCodecs.audio && !variantCodecs.video) {\n return;\n } // TODO: we can support this by removing the\n // old media source and creating a new one, but it will take some work.\n // The number of streams cannot change\n\n if (variantCodecCount !== codecCount_) {\n exclusionReasons.push(`codec count \"${variantCodecCount}\" !== \"${codecCount_}\"`);\n } // only exclude playlists by codec change, if codecs cannot switch\n // during playback.\n\n if (!this.sourceUpdater_.canChangeType()) {\n const variantVideoDetails = variantCodecs.video && parseCodecs(variantCodecs.video)[0] || null;\n const variantAudioDetails = variantCodecs.audio && parseCodecs(variantCodecs.audio)[0] || null; // the video codec cannot change\n\n if (variantVideoDetails && videoDetails && variantVideoDetails.type.toLowerCase() !== videoDetails.type.toLowerCase()) {\n exclusionReasons.push(`video codec \"${variantVideoDetails.type}\" !== \"${videoDetails.type}\"`);\n } // the audio codec cannot change\n\n if (variantAudioDetails && audioDetails && variantAudioDetails.type.toLowerCase() !== audioDetails.type.toLowerCase()) {\n exclusionReasons.push(`audio codec \"${variantAudioDetails.type}\" !== \"${audioDetails.type}\"`);\n }\n }\n if (exclusionReasons.length) {\n variant.excludeUntil = Infinity;\n this.logger_(`excluding ${variant.id}: ${exclusionReasons.join(' && ')}`);\n }\n });\n }\n updateAdCues_(media) {\n let offset = 0;\n const seekable = this.seekable();\n if (seekable.length) {\n offset = seekable.start(0);\n }\n updateAdCues(media, this.cueTagsTrack_, offset);\n }\n /**\n * Calculates the desired forward buffer length based on current time\n *\n * @return {number} Desired forward buffer length in seconds\n */\n\n goalBufferLength() {\n const currentTime = this.tech_.currentTime();\n const initial = Config.GOAL_BUFFER_LENGTH;\n const rate = Config.GOAL_BUFFER_LENGTH_RATE;\n const max = Math.max(initial, Config.MAX_GOAL_BUFFER_LENGTH);\n return Math.min(initial + currentTime * rate, max);\n }\n /**\n * Calculates the desired buffer low water line based on current time\n *\n * @return {number} Desired buffer low water line in seconds\n */\n\n bufferLowWaterLine() {\n const currentTime = this.tech_.currentTime();\n const initial = Config.BUFFER_LOW_WATER_LINE;\n const rate = Config.BUFFER_LOW_WATER_LINE_RATE;\n const max = Math.max(initial, Config.MAX_BUFFER_LOW_WATER_LINE);\n const newMax = Math.max(initial, Config.EXPERIMENTAL_MAX_BUFFER_LOW_WATER_LINE);\n return Math.min(initial + currentTime * rate, this.bufferBasedABR ? newMax : max);\n }\n bufferHighWaterLine() {\n return Config.BUFFER_HIGH_WATER_LINE;\n }\n addDateRangesToTextTrack_(dateRanges) {\n createMetadataTrackIfNotExists(this.inbandTextTracks_, 'com.apple.streaming', this.tech_);\n addDateRangeMetadata({\n inbandTextTracks: this.inbandTextTracks_,\n dateRanges\n });\n }\n addMetadataToTextTrack(dispatchType, metadataArray, videoDuration) {\n const timestampOffset = this.sourceUpdater_.videoBuffer ? this.sourceUpdater_.videoTimestampOffset() : this.sourceUpdater_.audioTimestampOffset(); // There's potentially an issue where we could double add metadata if there's a muxed\n // audio/video source with a metadata track, and an alt audio with a metadata track.\n // However, this probably won't happen, and if it does it can be handled then.\n\n createMetadataTrackIfNotExists(this.inbandTextTracks_, dispatchType, this.tech_);\n addMetadata({\n inbandTextTracks: this.inbandTextTracks_,\n metadataArray,\n timestampOffset,\n videoDuration\n });\n }\n pathwayAttribute_(playlist) {\n return playlist.attributes['PATHWAY-ID'] || playlist.attributes.serviceLocation;\n }\n /**\n * Initialize content steering listeners and apply the tag properties.\n */\n\n initContentSteeringController_() {\n const initialMain = this.main();\n if (!initialMain.contentSteering) {\n return;\n }\n const updateSteeringValues = main => {\n for (const playlist of main.playlists) {\n this.contentSteeringController_.addAvailablePathway(this.pathwayAttribute_(playlist));\n }\n this.contentSteeringController_.assignTagProperties(main.uri, main.contentSteering);\n };\n updateSteeringValues(initialMain);\n this.contentSteeringController_.on('content-steering', this.excludeThenChangePathway_.bind(this)); // We need to ensure we update the content steering values when a new\n // manifest is loaded in live DASH with content steering.\n\n if (this.sourceType_ === 'dash') {\n this.mainPlaylistLoader_.on('mediaupdatetimeout', () => {\n this.mainPlaylistLoader_.refreshMedia_(this.mainPlaylistLoader_.media().id); // clear past values\n\n this.contentSteeringController_.abort();\n this.contentSteeringController_.clearTTLTimeout_();\n this.contentSteeringController_.clearAvailablePathways();\n updateSteeringValues(this.main());\n });\n } // Do this at startup only, after that the steering requests are managed by the Content Steering class.\n // DASH queryBeforeStart scenarios will be handled by the Content Steering class.\n\n if (!this.contentSteeringController_.queryBeforeStart) {\n this.tech_.one('canplay', () => {\n this.contentSteeringController_.requestSteeringManifest();\n });\n }\n }\n /**\n * Simple exclude and change playlist logic for content steering.\n */\n\n excludeThenChangePathway_() {\n const currentPathway = this.contentSteeringController_.getPathway();\n if (!currentPathway) {\n return;\n }\n const main = this.main();\n const playlists = main.playlists;\n const ids = new Set();\n let didEnablePlaylists = false;\n Object.keys(playlists).forEach(key => {\n const variant = playlists[key];\n const pathwayId = this.pathwayAttribute_(variant);\n const differentPathwayId = pathwayId && currentPathway !== pathwayId;\n const steeringExclusion = variant.excludeUntil === Infinity && variant.lastExcludeReason_ === 'content-steering';\n if (steeringExclusion && !differentPathwayId) {\n delete variant.excludeUntil;\n delete variant.lastExcludeReason_;\n didEnablePlaylists = true;\n }\n const noExcludeUntil = !variant.excludeUntil && variant.excludeUntil !== Infinity;\n const shouldExclude = !ids.has(variant.id) && differentPathwayId && noExcludeUntil;\n if (!shouldExclude) {\n return;\n }\n ids.add(variant.id);\n variant.excludeUntil = Infinity;\n variant.lastExcludeReason_ = 'content-steering'; // TODO: kind of spammy, maybe move this.\n\n this.logger_(`excluding ${variant.id} for ${variant.lastExcludeReason_}`);\n });\n if (this.contentSteeringController_.manifestType_ === 'DASH') {\n Object.keys(this.mediaTypes_).forEach(key => {\n const type = this.mediaTypes_[key];\n if (type.activePlaylistLoader) {\n const currentPlaylist = type.activePlaylistLoader.media_; // Check if the current media playlist matches the current CDN\n\n if (currentPlaylist && currentPlaylist.attributes.serviceLocation !== currentPathway) {\n didEnablePlaylists = true;\n }\n }\n });\n }\n if (didEnablePlaylists) {\n this.changeSegmentPathway_();\n }\n }\n /**\n * Changes the current playlists for audio, video and subtitles after a new pathway\n * is chosen from content steering.\n */\n\n changeSegmentPathway_() {\n const nextPlaylist = this.selectPlaylist();\n this.pauseLoading(); // Switch audio and text track playlists if necessary in DASH\n\n if (this.contentSteeringController_.manifestType_ === 'DASH') {\n this.switchMediaForDASHContentSteering_();\n }\n this.switchMedia_(nextPlaylist, 'content-steering');\n }\n}\n\n/**\n * Returns a function that acts as the Enable/disable playlist function.\n *\n * @param {PlaylistLoader} loader - The main playlist loader\n * @param {string} playlistID - id of the playlist\n * @param {Function} changePlaylistFn - A function to be called after a\n * playlist's enabled-state has been changed. Will NOT be called if a\n * playlist's enabled-state is unchanged\n * @param {boolean=} enable - Value to set the playlist enabled-state to\n * or if undefined returns the current enabled-state for the playlist\n * @return {Function} Function for setting/getting enabled\n */\n\nconst enableFunction = (loader, playlistID, changePlaylistFn) => enable => {\n const playlist = loader.main.playlists[playlistID];\n const incompatible = isIncompatible(playlist);\n const currentlyEnabled = isEnabled(playlist);\n if (typeof enable === 'undefined') {\n return currentlyEnabled;\n }\n if (enable) {\n delete playlist.disabled;\n } else {\n playlist.disabled = true;\n }\n if (enable !== currentlyEnabled && !incompatible) {\n // Ensure the outside world knows about our changes\n changePlaylistFn();\n if (enable) {\n loader.trigger('renditionenabled');\n } else {\n loader.trigger('renditiondisabled');\n }\n }\n return enable;\n};\n/**\n * The representation object encapsulates the publicly visible information\n * in a media playlist along with a setter/getter-type function (enabled)\n * for changing the enabled-state of a particular playlist entry\n *\n * @class Representation\n */\n\nclass Representation {\n constructor(vhsHandler, playlist, id) {\n const {\n playlistController_: pc\n } = vhsHandler;\n const qualityChangeFunction = pc.fastQualityChange_.bind(pc); // some playlist attributes are optional\n\n if (playlist.attributes) {\n const resolution = playlist.attributes.RESOLUTION;\n this.width = resolution && resolution.width;\n this.height = resolution && resolution.height;\n this.bandwidth = playlist.attributes.BANDWIDTH;\n this.frameRate = playlist.attributes['FRAME-RATE'];\n }\n this.codecs = codecsForPlaylist(pc.main(), playlist);\n this.playlist = playlist; // The id is simply the ordinality of the media playlist\n // within the main playlist\n\n this.id = id; // Partially-apply the enableFunction to create a playlist-\n // specific variant\n\n this.enabled = enableFunction(vhsHandler.playlists, playlist.id, qualityChangeFunction);\n }\n}\n/**\n * A mixin function that adds the `representations` api to an instance\n * of the VhsHandler class\n *\n * @param {VhsHandler} vhsHandler - An instance of VhsHandler to add the\n * representation API into\n */\n\nconst renditionSelectionMixin = function (vhsHandler) {\n // Add a single API-specific function to the VhsHandler instance\n vhsHandler.representations = () => {\n const main = vhsHandler.playlistController_.main();\n const playlists = isAudioOnly(main) ? vhsHandler.playlistController_.getAudioTrackPlaylists_() : main.playlists;\n if (!playlists) {\n return [];\n }\n return playlists.filter(media => !isIncompatible(media)).map((e, i) => new Representation(vhsHandler, e, e.id));\n };\n};\n\n/**\n * @file playback-watcher.js\n *\n * Playback starts, and now my watch begins. It shall not end until my death. I shall\n * take no wait, hold no uncleared timeouts, father no bad seeks. I shall wear no crowns\n * and win no glory. I shall live and die at my post. I am the corrector of the underflow.\n * I am the watcher of gaps. I am the shield that guards the realms of seekable. I pledge\n * my life and honor to the Playback Watch, for this Player and all the Players to come.\n */\n\nconst timerCancelEvents = ['seeking', 'seeked', 'pause', 'playing', 'error'];\n/**\n * @class PlaybackWatcher\n */\n\nclass PlaybackWatcher {\n /**\n * Represents an PlaybackWatcher object.\n *\n * @class\n * @param {Object} options an object that includes the tech and settings\n */\n constructor(options) {\n this.playlistController_ = options.playlistController;\n this.tech_ = options.tech;\n this.seekable = options.seekable;\n this.allowSeeksWithinUnsafeLiveWindow = options.allowSeeksWithinUnsafeLiveWindow;\n this.liveRangeSafeTimeDelta = options.liveRangeSafeTimeDelta;\n this.media = options.media;\n this.consecutiveUpdates = 0;\n this.lastRecordedTime = null;\n this.checkCurrentTimeTimeout_ = null;\n this.logger_ = logger('PlaybackWatcher');\n this.logger_('initialize');\n const playHandler = () => this.monitorCurrentTime_();\n const canPlayHandler = () => this.monitorCurrentTime_();\n const waitingHandler = () => this.techWaiting_();\n const cancelTimerHandler = () => this.resetTimeUpdate_();\n const pc = this.playlistController_;\n const loaderTypes = ['main', 'subtitle', 'audio'];\n const loaderChecks = {};\n loaderTypes.forEach(type => {\n loaderChecks[type] = {\n reset: () => this.resetSegmentDownloads_(type),\n updateend: () => this.checkSegmentDownloads_(type)\n };\n pc[`${type}SegmentLoader_`].on('appendsdone', loaderChecks[type].updateend); // If a rendition switch happens during a playback stall where the buffer\n // isn't changing we want to reset. We cannot assume that the new rendition\n // will also be stalled, until after new appends.\n\n pc[`${type}SegmentLoader_`].on('playlistupdate', loaderChecks[type].reset); // Playback stalls should not be detected right after seeking.\n // This prevents one segment playlists (single vtt or single segment content)\n // from being detected as stalling. As the buffer will not change in those cases, since\n // the buffer is the entire video duration.\n\n this.tech_.on(['seeked', 'seeking'], loaderChecks[type].reset);\n });\n /**\n * We check if a seek was into a gap through the following steps:\n * 1. We get a seeking event and we do not get a seeked event. This means that\n * a seek was attempted but not completed.\n * 2. We run `fixesBadSeeks_` on segment loader appends. This means that we already\n * removed everything from our buffer and appended a segment, and should be ready\n * to check for gaps.\n */\n\n const setSeekingHandlers = fn => {\n ['main', 'audio'].forEach(type => {\n pc[`${type}SegmentLoader_`][fn]('appended', this.seekingAppendCheck_);\n });\n };\n this.seekingAppendCheck_ = () => {\n if (this.fixesBadSeeks_()) {\n this.consecutiveUpdates = 0;\n this.lastRecordedTime = this.tech_.currentTime();\n setSeekingHandlers('off');\n }\n };\n this.clearSeekingAppendCheck_ = () => setSeekingHandlers('off');\n this.watchForBadSeeking_ = () => {\n this.clearSeekingAppendCheck_();\n setSeekingHandlers('on');\n };\n this.tech_.on('seeked', this.clearSeekingAppendCheck_);\n this.tech_.on('seeking', this.watchForBadSeeking_);\n this.tech_.on('waiting', waitingHandler);\n this.tech_.on(timerCancelEvents, cancelTimerHandler);\n this.tech_.on('canplay', canPlayHandler);\n /*\n An edge case exists that results in gaps not being skipped when they exist at the beginning of a stream. This case\n is surfaced in one of two ways:\n 1) The `waiting` event is fired before the player has buffered content, making it impossible\n to find or skip the gap. The `waiting` event is followed by a `play` event. On first play\n we can check if playback is stalled due to a gap, and skip the gap if necessary.\n 2) A source with a gap at the beginning of the stream is loaded programatically while the player\n is in a playing state. To catch this case, it's important that our one-time play listener is setup\n even if the player is in a playing state\n */\n\n this.tech_.one('play', playHandler); // Define the dispose function to clean up our events\n\n this.dispose = () => {\n this.clearSeekingAppendCheck_();\n this.logger_('dispose');\n this.tech_.off('waiting', waitingHandler);\n this.tech_.off(timerCancelEvents, cancelTimerHandler);\n this.tech_.off('canplay', canPlayHandler);\n this.tech_.off('play', playHandler);\n this.tech_.off('seeking', this.watchForBadSeeking_);\n this.tech_.off('seeked', this.clearSeekingAppendCheck_);\n loaderTypes.forEach(type => {\n pc[`${type}SegmentLoader_`].off('appendsdone', loaderChecks[type].updateend);\n pc[`${type}SegmentLoader_`].off('playlistupdate', loaderChecks[type].reset);\n this.tech_.off(['seeked', 'seeking'], loaderChecks[type].reset);\n });\n if (this.checkCurrentTimeTimeout_) {\n window$1.clearTimeout(this.checkCurrentTimeTimeout_);\n }\n this.resetTimeUpdate_();\n };\n }\n /**\n * Periodically check current time to see if playback stopped\n *\n * @private\n */\n\n monitorCurrentTime_() {\n this.checkCurrentTime_();\n if (this.checkCurrentTimeTimeout_) {\n window$1.clearTimeout(this.checkCurrentTimeTimeout_);\n } // 42 = 24 fps // 250 is what Webkit uses // FF uses 15\n\n this.checkCurrentTimeTimeout_ = window$1.setTimeout(this.monitorCurrentTime_.bind(this), 250);\n }\n /**\n * Reset stalled download stats for a specific type of loader\n *\n * @param {string} type\n * The segment loader type to check.\n *\n * @listens SegmentLoader#playlistupdate\n * @listens Tech#seeking\n * @listens Tech#seeked\n */\n\n resetSegmentDownloads_(type) {\n const loader = this.playlistController_[`${type}SegmentLoader_`];\n if (this[`${type}StalledDownloads_`] > 0) {\n this.logger_(`resetting possible stalled download count for ${type} loader`);\n }\n this[`${type}StalledDownloads_`] = 0;\n this[`${type}Buffered_`] = loader.buffered_();\n }\n /**\n * Checks on every segment `appendsdone` to see\n * if segment appends are making progress. If they are not\n * and we are still downloading bytes. We exclude the playlist.\n *\n * @param {string} type\n * The segment loader type to check.\n *\n * @listens SegmentLoader#appendsdone\n */\n\n checkSegmentDownloads_(type) {\n const pc = this.playlistController_;\n const loader = pc[`${type}SegmentLoader_`];\n const buffered = loader.buffered_();\n const isBufferedDifferent = isRangeDifferent(this[`${type}Buffered_`], buffered);\n this[`${type}Buffered_`] = buffered; // if another watcher is going to fix the issue or\n // the buffered value for this loader changed\n // appends are working\n\n if (isBufferedDifferent) {\n this.resetSegmentDownloads_(type);\n return;\n }\n this[`${type}StalledDownloads_`]++;\n this.logger_(`found #${this[`${type}StalledDownloads_`]} ${type} appends that did not increase buffer (possible stalled download)`, {\n playlistId: loader.playlist_ && loader.playlist_.id,\n buffered: timeRangesToArray(buffered)\n }); // after 10 possibly stalled appends with no reset, exclude\n\n if (this[`${type}StalledDownloads_`] < 10) {\n return;\n }\n this.logger_(`${type} loader stalled download exclusion`);\n this.resetSegmentDownloads_(type);\n this.tech_.trigger({\n type: 'usage',\n name: `vhs-${type}-download-exclusion`\n });\n if (type === 'subtitle') {\n return;\n } // TODO: should we exclude audio tracks rather than main tracks\n // when type is audio?\n\n pc.excludePlaylist({\n error: {\n message: `Excessive ${type} segment downloading detected.`\n },\n playlistExclusionDuration: Infinity\n });\n }\n /**\n * The purpose of this function is to emulate the \"waiting\" event on\n * browsers that do not emit it when they are waiting for more\n * data to continue playback\n *\n * @private\n */\n\n checkCurrentTime_() {\n if (this.tech_.paused() || this.tech_.seeking()) {\n return;\n }\n const currentTime = this.tech_.currentTime();\n const buffered = this.tech_.buffered();\n if (this.lastRecordedTime === currentTime && (!buffered.length || currentTime + SAFE_TIME_DELTA >= buffered.end(buffered.length - 1))) {\n // If current time is at the end of the final buffered region, then any playback\n // stall is most likely caused by buffering in a low bandwidth environment. The tech\n // should fire a `waiting` event in this scenario, but due to browser and tech\n // inconsistencies. Calling `techWaiting_` here allows us to simulate\n // responding to a native `waiting` event when the tech fails to emit one.\n return this.techWaiting_();\n }\n if (this.consecutiveUpdates >= 5 && currentTime === this.lastRecordedTime) {\n this.consecutiveUpdates++;\n this.waiting_();\n } else if (currentTime === this.lastRecordedTime) {\n this.consecutiveUpdates++;\n } else {\n this.consecutiveUpdates = 0;\n this.lastRecordedTime = currentTime;\n }\n }\n /**\n * Resets the 'timeupdate' mechanism designed to detect that we are stalled\n *\n * @private\n */\n\n resetTimeUpdate_() {\n this.consecutiveUpdates = 0;\n }\n /**\n * Fixes situations where there's a bad seek\n *\n * @return {boolean} whether an action was taken to fix the seek\n * @private\n */\n\n fixesBadSeeks_() {\n const seeking = this.tech_.seeking();\n if (!seeking) {\n return false;\n } // TODO: It's possible that these seekable checks should be moved out of this function\n // and into a function that runs on seekablechange. It's also possible that we only need\n // afterSeekableWindow as the buffered check at the bottom is good enough to handle before\n // seekable range.\n\n const seekable = this.seekable();\n const currentTime = this.tech_.currentTime();\n const isAfterSeekableRange = this.afterSeekableWindow_(seekable, currentTime, this.media(), this.allowSeeksWithinUnsafeLiveWindow);\n let seekTo;\n if (isAfterSeekableRange) {\n const seekableEnd = seekable.end(seekable.length - 1); // sync to live point (if VOD, our seekable was updated and we're simply adjusting)\n\n seekTo = seekableEnd;\n }\n if (this.beforeSeekableWindow_(seekable, currentTime)) {\n const seekableStart = seekable.start(0); // sync to the beginning of the live window\n // provide a buffer of .1 seconds to handle rounding/imprecise numbers\n\n seekTo = seekableStart + (\n // if the playlist is too short and the seekable range is an exact time (can\n // happen in live with a 3 segment playlist), then don't use a time delta\n seekableStart === seekable.end(0) ? 0 : SAFE_TIME_DELTA);\n }\n if (typeof seekTo !== 'undefined') {\n this.logger_(`Trying to seek outside of seekable at time ${currentTime} with ` + `seekable range ${printableRange(seekable)}. Seeking to ` + `${seekTo}.`);\n this.tech_.setCurrentTime(seekTo);\n return true;\n }\n const sourceUpdater = this.playlistController_.sourceUpdater_;\n const buffered = this.tech_.buffered();\n const audioBuffered = sourceUpdater.audioBuffer ? sourceUpdater.audioBuffered() : null;\n const videoBuffered = sourceUpdater.videoBuffer ? sourceUpdater.videoBuffered() : null;\n const media = this.media(); // verify that at least two segment durations or one part duration have been\n // appended before checking for a gap.\n\n const minAppendedDuration = media.partTargetDuration ? media.partTargetDuration : (media.targetDuration - TIME_FUDGE_FACTOR) * 2; // verify that at least two segment durations have been\n // appended before checking for a gap.\n\n const bufferedToCheck = [audioBuffered, videoBuffered];\n for (let i = 0; i < bufferedToCheck.length; i++) {\n // skip null buffered\n if (!bufferedToCheck[i]) {\n continue;\n }\n const timeAhead = timeAheadOf(bufferedToCheck[i], currentTime); // if we are less than two video/audio segment durations or one part\n // duration behind we haven't appended enough to call this a bad seek.\n\n if (timeAhead < minAppendedDuration) {\n return false;\n }\n }\n const nextRange = findNextRange(buffered, currentTime); // we have appended enough content, but we don't have anything buffered\n // to seek over the gap\n\n if (nextRange.length === 0) {\n return false;\n }\n seekTo = nextRange.start(0) + SAFE_TIME_DELTA;\n this.logger_(`Buffered region starts (${nextRange.start(0)}) ` + ` just beyond seek point (${currentTime}). Seeking to ${seekTo}.`);\n this.tech_.setCurrentTime(seekTo);\n return true;\n }\n /**\n * Handler for situations when we determine the player is waiting.\n *\n * @private\n */\n\n waiting_() {\n if (this.techWaiting_()) {\n return;\n } // All tech waiting checks failed. Use last resort correction\n\n const currentTime = this.tech_.currentTime();\n const buffered = this.tech_.buffered();\n const currentRange = findRange(buffered, currentTime); // Sometimes the player can stall for unknown reasons within a contiguous buffered\n // region with no indication that anything is amiss (seen in Firefox). Seeking to\n // currentTime is usually enough to kickstart the player. This checks that the player\n // is currently within a buffered region before attempting a corrective seek.\n // Chrome does not appear to continue `timeupdate` events after a `waiting` event\n // until there is ~ 3 seconds of forward buffer available. PlaybackWatcher should also\n // make sure there is ~3 seconds of forward buffer before taking any corrective action\n // to avoid triggering an `unknownwaiting` event when the network is slow.\n\n if (currentRange.length && currentTime + 3 <= currentRange.end(0)) {\n this.resetTimeUpdate_();\n this.tech_.setCurrentTime(currentTime);\n this.logger_(`Stopped at ${currentTime} while inside a buffered region ` + `[${currentRange.start(0)} -> ${currentRange.end(0)}]. Attempting to resume ` + 'playback by seeking to the current time.'); // unknown waiting corrections may be useful for monitoring QoS\n\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-unknown-waiting'\n });\n return;\n }\n }\n /**\n * Handler for situations when the tech fires a `waiting` event\n *\n * @return {boolean}\n * True if an action (or none) was needed to correct the waiting. False if no\n * checks passed\n * @private\n */\n\n techWaiting_() {\n const seekable = this.seekable();\n const currentTime = this.tech_.currentTime();\n if (this.tech_.seeking()) {\n // Tech is seeking or already waiting on another action, no action needed\n return true;\n }\n if (this.beforeSeekableWindow_(seekable, currentTime)) {\n const livePoint = seekable.end(seekable.length - 1);\n this.logger_(`Fell out of live window at time ${currentTime}. Seeking to ` + `live point (seekable end) ${livePoint}`);\n this.resetTimeUpdate_();\n this.tech_.setCurrentTime(livePoint); // live window resyncs may be useful for monitoring QoS\n\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-live-resync'\n });\n return true;\n }\n const sourceUpdater = this.tech_.vhs.playlistController_.sourceUpdater_;\n const buffered = this.tech_.buffered();\n const videoUnderflow = this.videoUnderflow_({\n audioBuffered: sourceUpdater.audioBuffered(),\n videoBuffered: sourceUpdater.videoBuffered(),\n currentTime\n });\n if (videoUnderflow) {\n // Even though the video underflowed and was stuck in a gap, the audio overplayed\n // the gap, leading currentTime into a buffered range. Seeking to currentTime\n // allows the video to catch up to the audio position without losing any audio\n // (only suffering ~3 seconds of frozen video and a pause in audio playback).\n this.resetTimeUpdate_();\n this.tech_.setCurrentTime(currentTime); // video underflow may be useful for monitoring QoS\n\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-video-underflow'\n });\n return true;\n }\n const nextRange = findNextRange(buffered, currentTime); // check for gap\n\n if (nextRange.length > 0) {\n this.logger_(`Stopped at ${currentTime} and seeking to ${nextRange.start(0)}`);\n this.resetTimeUpdate_();\n this.skipTheGap_(currentTime);\n return true;\n } // All checks failed. Returning false to indicate failure to correct waiting\n\n return false;\n }\n afterSeekableWindow_(seekable, currentTime, playlist, allowSeeksWithinUnsafeLiveWindow = false) {\n if (!seekable.length) {\n // we can't make a solid case if there's no seekable, default to false\n return false;\n }\n let allowedEnd = seekable.end(seekable.length - 1) + SAFE_TIME_DELTA;\n const isLive = !playlist.endList;\n const isLLHLS = typeof playlist.partTargetDuration === 'number';\n if (isLive && (isLLHLS || allowSeeksWithinUnsafeLiveWindow)) {\n allowedEnd = seekable.end(seekable.length - 1) + playlist.targetDuration * 3;\n }\n if (currentTime > allowedEnd) {\n return true;\n }\n return false;\n }\n beforeSeekableWindow_(seekable, currentTime) {\n if (seekable.length &&\n // can't fall before 0 and 0 seekable start identifies VOD stream\n seekable.start(0) > 0 && currentTime < seekable.start(0) - this.liveRangeSafeTimeDelta) {\n return true;\n }\n return false;\n }\n videoUnderflow_({\n videoBuffered,\n audioBuffered,\n currentTime\n }) {\n // audio only content will not have video underflow :)\n if (!videoBuffered) {\n return;\n }\n let gap; // find a gap in demuxed content.\n\n if (videoBuffered.length && audioBuffered.length) {\n // in Chrome audio will continue to play for ~3s when we run out of video\n // so we have to check that the video buffer did have some buffer in the\n // past.\n const lastVideoRange = findRange(videoBuffered, currentTime - 3);\n const videoRange = findRange(videoBuffered, currentTime);\n const audioRange = findRange(audioBuffered, currentTime);\n if (audioRange.length && !videoRange.length && lastVideoRange.length) {\n gap = {\n start: lastVideoRange.end(0),\n end: audioRange.end(0)\n };\n } // find a gap in muxed content.\n } else {\n const nextRange = findNextRange(videoBuffered, currentTime); // Even if there is no available next range, there is still a possibility we are\n // stuck in a gap due to video underflow.\n\n if (!nextRange.length) {\n gap = this.gapFromVideoUnderflow_(videoBuffered, currentTime);\n }\n }\n if (gap) {\n this.logger_(`Encountered a gap in video from ${gap.start} to ${gap.end}. ` + `Seeking to current time ${currentTime}`);\n return true;\n }\n return false;\n }\n /**\n * Timer callback. If playback still has not proceeded, then we seek\n * to the start of the next buffered region.\n *\n * @private\n */\n\n skipTheGap_(scheduledCurrentTime) {\n const buffered = this.tech_.buffered();\n const currentTime = this.tech_.currentTime();\n const nextRange = findNextRange(buffered, currentTime);\n this.resetTimeUpdate_();\n if (nextRange.length === 0 || currentTime !== scheduledCurrentTime) {\n return;\n }\n this.logger_('skipTheGap_:', 'currentTime:', currentTime, 'scheduled currentTime:', scheduledCurrentTime, 'nextRange start:', nextRange.start(0)); // only seek if we still have not played\n\n this.tech_.setCurrentTime(nextRange.start(0) + TIME_FUDGE_FACTOR);\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-gap-skip'\n });\n }\n gapFromVideoUnderflow_(buffered, currentTime) {\n // At least in Chrome, if there is a gap in the video buffer, the audio will continue\n // playing for ~3 seconds after the video gap starts. This is done to account for\n // video buffer underflow/underrun (note that this is not done when there is audio\n // buffer underflow/underrun -- in that case the video will stop as soon as it\n // encounters the gap, as audio stalls are more noticeable/jarring to a user than\n // video stalls). The player's time will reflect the playthrough of audio, so the\n // time will appear as if we are in a buffered region, even if we are stuck in a\n // \"gap.\"\n //\n // Example:\n // video buffer: 0 => 10.1, 10.2 => 20\n // audio buffer: 0 => 20\n // overall buffer: 0 => 10.1, 10.2 => 20\n // current time: 13\n //\n // Chrome's video froze at 10 seconds, where the video buffer encountered the gap,\n // however, the audio continued playing until it reached ~3 seconds past the gap\n // (13 seconds), at which point it stops as well. Since current time is past the\n // gap, findNextRange will return no ranges.\n //\n // To check for this issue, we see if there is a gap that starts somewhere within\n // a 3 second range (3 seconds +/- 1 second) back from our current time.\n const gaps = findGaps(buffered);\n for (let i = 0; i < gaps.length; i++) {\n const start = gaps.start(i);\n const end = gaps.end(i); // gap is starts no more than 4 seconds back\n\n if (currentTime - start < 4 && currentTime - start > 2) {\n return {\n start,\n end\n };\n }\n }\n return null;\n }\n}\nconst defaultOptions = {\n errorInterval: 30,\n getSource(next) {\n const tech = this.tech({\n IWillNotUseThisInPlugins: true\n });\n const sourceObj = tech.currentSource_ || this.currentSource();\n return next(sourceObj);\n }\n};\n/**\n * Main entry point for the plugin\n *\n * @param {Player} player a reference to a videojs Player instance\n * @param {Object} [options] an object with plugin options\n * @private\n */\n\nconst initPlugin = function (player, options) {\n let lastCalled = 0;\n let seekTo = 0;\n const localOptions = merge(defaultOptions, options);\n player.ready(() => {\n player.trigger({\n type: 'usage',\n name: 'vhs-error-reload-initialized'\n });\n });\n /**\n * Player modifications to perform that must wait until `loadedmetadata`\n * has been triggered\n *\n * @private\n */\n\n const loadedMetadataHandler = function () {\n if (seekTo) {\n player.currentTime(seekTo);\n }\n };\n /**\n * Set the source on the player element, play, and seek if necessary\n *\n * @param {Object} sourceObj An object specifying the source url and mime-type to play\n * @private\n */\n\n const setSource = function (sourceObj) {\n if (sourceObj === null || sourceObj === undefined) {\n return;\n }\n seekTo = player.duration() !== Infinity && player.currentTime() || 0;\n player.one('loadedmetadata', loadedMetadataHandler);\n player.src(sourceObj);\n player.trigger({\n type: 'usage',\n name: 'vhs-error-reload'\n });\n player.play();\n };\n /**\n * Attempt to get a source from either the built-in getSource function\n * or a custom function provided via the options\n *\n * @private\n */\n\n const errorHandler = function () {\n // Do not attempt to reload the source if a source-reload occurred before\n // 'errorInterval' time has elapsed since the last source-reload\n if (Date.now() - lastCalled < localOptions.errorInterval * 1000) {\n player.trigger({\n type: 'usage',\n name: 'vhs-error-reload-canceled'\n });\n return;\n }\n if (!localOptions.getSource || typeof localOptions.getSource !== 'function') {\n videojs.log.error('ERROR: reloadSourceOnError - The option getSource must be a function!');\n return;\n }\n lastCalled = Date.now();\n return localOptions.getSource.call(player, setSource);\n };\n /**\n * Unbind any event handlers that were bound by the plugin\n *\n * @private\n */\n\n const cleanupEvents = function () {\n player.off('loadedmetadata', loadedMetadataHandler);\n player.off('error', errorHandler);\n player.off('dispose', cleanupEvents);\n };\n /**\n * Cleanup before re-initializing the plugin\n *\n * @param {Object} [newOptions] an object with plugin options\n * @private\n */\n\n const reinitPlugin = function (newOptions) {\n cleanupEvents();\n initPlugin(player, newOptions);\n };\n player.on('error', errorHandler);\n player.on('dispose', cleanupEvents); // Overwrite the plugin function so that we can correctly cleanup before\n // initializing the plugin\n\n player.reloadSourceOnError = reinitPlugin;\n};\n/**\n * Reload the source when an error is detected as long as there\n * wasn't an error previously within the last 30 seconds\n *\n * @param {Object} [options] an object with plugin options\n */\n\nconst reloadSourceOnError = function (options) {\n initPlugin(this, options);\n};\nvar version$4 = \"3.7.0\";\nvar version$3 = \"7.0.1\";\nvar version$2 = \"1.2.2\";\nvar version$1 = \"7.1.0\";\nvar version = \"4.0.1\";\n\n/**\n * @file videojs-http-streaming.js\n *\n * The main file for the VHS project.\n * License: https://github.com/videojs/videojs-http-streaming/blob/main/LICENSE\n */\nconst Vhs = {\n PlaylistLoader,\n Playlist,\n utils,\n STANDARD_PLAYLIST_SELECTOR: lastBandwidthSelector,\n INITIAL_PLAYLIST_SELECTOR: lowestBitrateCompatibleVariantSelector,\n lastBandwidthSelector,\n movingAverageBandwidthSelector,\n comparePlaylistBandwidth,\n comparePlaylistResolution,\n xhr: xhrFactory()\n}; // Define getter/setters for config properties\n\nObject.keys(Config).forEach(prop => {\n Object.defineProperty(Vhs, prop, {\n get() {\n videojs.log.warn(`using Vhs.${prop} is UNSAFE be sure you know what you are doing`);\n return Config[prop];\n },\n set(value) {\n videojs.log.warn(`using Vhs.${prop} is UNSAFE be sure you know what you are doing`);\n if (typeof value !== 'number' || value < 0) {\n videojs.log.warn(`value of Vhs.${prop} must be greater than or equal to 0`);\n return;\n }\n Config[prop] = value;\n }\n });\n});\nconst LOCAL_STORAGE_KEY = 'videojs-vhs';\n/**\n * Updates the selectedIndex of the QualityLevelList when a mediachange happens in vhs.\n *\n * @param {QualityLevelList} qualityLevels The QualityLevelList to update.\n * @param {PlaylistLoader} playlistLoader PlaylistLoader containing the new media info.\n * @function handleVhsMediaChange\n */\n\nconst handleVhsMediaChange = function (qualityLevels, playlistLoader) {\n const newPlaylist = playlistLoader.media();\n let selectedIndex = -1;\n for (let i = 0; i < qualityLevels.length; i++) {\n if (qualityLevels[i].id === newPlaylist.id) {\n selectedIndex = i;\n break;\n }\n }\n qualityLevels.selectedIndex_ = selectedIndex;\n qualityLevels.trigger({\n selectedIndex,\n type: 'change'\n });\n};\n/**\n * Adds quality levels to list once playlist metadata is available\n *\n * @param {QualityLevelList} qualityLevels The QualityLevelList to attach events to.\n * @param {Object} vhs Vhs object to listen to for media events.\n * @function handleVhsLoadedMetadata\n */\n\nconst handleVhsLoadedMetadata = function (qualityLevels, vhs) {\n vhs.representations().forEach(rep => {\n qualityLevels.addQualityLevel(rep);\n });\n handleVhsMediaChange(qualityLevels, vhs.playlists);\n}; // VHS is a source handler, not a tech. Make sure attempts to use it\n// as one do not cause exceptions.\n\nVhs.canPlaySource = function () {\n return videojs.log.warn('VHS is no longer a tech. Please remove it from ' + 'your player\\'s techOrder.');\n};\nconst emeKeySystems = (keySystemOptions, mainPlaylist, audioPlaylist) => {\n if (!keySystemOptions) {\n return keySystemOptions;\n }\n let codecs = {};\n if (mainPlaylist && mainPlaylist.attributes && mainPlaylist.attributes.CODECS) {\n codecs = unwrapCodecList(parseCodecs(mainPlaylist.attributes.CODECS));\n }\n if (audioPlaylist && audioPlaylist.attributes && audioPlaylist.attributes.CODECS) {\n codecs.audio = audioPlaylist.attributes.CODECS;\n }\n const videoContentType = getMimeForCodec(codecs.video);\n const audioContentType = getMimeForCodec(codecs.audio); // upsert the content types based on the selected playlist\n\n const keySystemContentTypes = {};\n for (const keySystem in keySystemOptions) {\n keySystemContentTypes[keySystem] = {};\n if (audioContentType) {\n keySystemContentTypes[keySystem].audioContentType = audioContentType;\n }\n if (videoContentType) {\n keySystemContentTypes[keySystem].videoContentType = videoContentType;\n } // Default to using the video playlist's PSSH even though they may be different, as\n // videojs-contrib-eme will only accept one in the options.\n //\n // This shouldn't be an issue for most cases as early intialization will handle all\n // unique PSSH values, and if they aren't, then encrypted events should have the\n // specific information needed for the unique license.\n\n if (mainPlaylist.contentProtection && mainPlaylist.contentProtection[keySystem] && mainPlaylist.contentProtection[keySystem].pssh) {\n keySystemContentTypes[keySystem].pssh = mainPlaylist.contentProtection[keySystem].pssh;\n } // videojs-contrib-eme accepts the option of specifying: 'com.some.cdm': 'url'\n // so we need to prevent overwriting the URL entirely\n\n if (typeof keySystemOptions[keySystem] === 'string') {\n keySystemContentTypes[keySystem].url = keySystemOptions[keySystem];\n }\n }\n return merge(keySystemOptions, keySystemContentTypes);\n};\n/**\n * @typedef {Object} KeySystems\n *\n * keySystems configuration for https://github.com/videojs/videojs-contrib-eme\n * Note: not all options are listed here.\n *\n * @property {Uint8Array} [pssh]\n * Protection System Specific Header\n */\n\n/**\n * Goes through all the playlists and collects an array of KeySystems options objects\n * containing each playlist's keySystems and their pssh values, if available.\n *\n * @param {Object[]} playlists\n * The playlists to look through\n * @param {string[]} keySystems\n * The keySystems to collect pssh values for\n *\n * @return {KeySystems[]}\n * An array of KeySystems objects containing available key systems and their\n * pssh values\n */\n\nconst getAllPsshKeySystemsOptions = (playlists, keySystems) => {\n return playlists.reduce((keySystemsArr, playlist) => {\n if (!playlist.contentProtection) {\n return keySystemsArr;\n }\n const keySystemsOptions = keySystems.reduce((keySystemsObj, keySystem) => {\n const keySystemOptions = playlist.contentProtection[keySystem];\n if (keySystemOptions && keySystemOptions.pssh) {\n keySystemsObj[keySystem] = {\n pssh: keySystemOptions.pssh\n };\n }\n return keySystemsObj;\n }, {});\n if (Object.keys(keySystemsOptions).length) {\n keySystemsArr.push(keySystemsOptions);\n }\n return keySystemsArr;\n }, []);\n};\n/**\n * Returns a promise that waits for the\n * [eme plugin](https://github.com/videojs/videojs-contrib-eme) to create a key session.\n *\n * Works around https://bugs.chromium.org/p/chromium/issues/detail?id=895449 in non-IE11\n * browsers.\n *\n * As per the above ticket, this is particularly important for Chrome, where, if\n * unencrypted content is appended before encrypted content and the key session has not\n * been created, a MEDIA_ERR_DECODE will be thrown once the encrypted content is reached\n * during playback.\n *\n * @param {Object} player\n * The player instance\n * @param {Object[]} sourceKeySystems\n * The key systems options from the player source\n * @param {Object} [audioMedia]\n * The active audio media playlist (optional)\n * @param {Object[]} mainPlaylists\n * The playlists found on the main playlist object\n *\n * @return {Object}\n * Promise that resolves when the key session has been created\n */\n\nconst waitForKeySessionCreation = ({\n player,\n sourceKeySystems,\n audioMedia,\n mainPlaylists\n}) => {\n if (!player.eme.initializeMediaKeys) {\n return Promise.resolve();\n } // TODO should all audio PSSH values be initialized for DRM?\n //\n // All unique video rendition pssh values are initialized for DRM, but here only\n // the initial audio playlist license is initialized. In theory, an encrypted\n // event should be fired if the user switches to an alternative audio playlist\n // where a license is required, but this case hasn't yet been tested. In addition, there\n // may be many alternate audio playlists unlikely to be used (e.g., multiple different\n // languages).\n\n const playlists = audioMedia ? mainPlaylists.concat([audioMedia]) : mainPlaylists;\n const keySystemsOptionsArr = getAllPsshKeySystemsOptions(playlists, Object.keys(sourceKeySystems));\n const initializationFinishedPromises = [];\n const keySessionCreatedPromises = []; // Since PSSH values are interpreted as initData, EME will dedupe any duplicates. The\n // only place where it should not be deduped is for ms-prefixed APIs, but\n // the existence of modern EME APIs in addition to\n // ms-prefixed APIs on Edge should prevent this from being a concern.\n // initializeMediaKeys also won't use the webkit-prefixed APIs.\n\n keySystemsOptionsArr.forEach(keySystemsOptions => {\n keySessionCreatedPromises.push(new Promise((resolve, reject) => {\n player.tech_.one('keysessioncreated', resolve);\n }));\n initializationFinishedPromises.push(new Promise((resolve, reject) => {\n player.eme.initializeMediaKeys({\n keySystems: keySystemsOptions\n }, err => {\n if (err) {\n reject(err);\n return;\n }\n resolve();\n });\n }));\n }); // The reasons Promise.race is chosen over Promise.any:\n //\n // * Promise.any is only available in Safari 14+.\n // * None of these promises are expected to reject. If they do reject, it might be\n // better here for the race to surface the rejection, rather than mask it by using\n // Promise.any.\n\n return Promise.race([\n // If a session was previously created, these will all finish resolving without\n // creating a new session, otherwise it will take until the end of all license\n // requests, which is why the key session check is used (to make setup much faster).\n Promise.all(initializationFinishedPromises),\n // Once a single session is created, the browser knows DRM will be used.\n Promise.race(keySessionCreatedPromises)]);\n};\n/**\n * If the [eme](https://github.com/videojs/videojs-contrib-eme) plugin is available, and\n * there are keySystems on the source, sets up source options to prepare the source for\n * eme.\n *\n * @param {Object} player\n * The player instance\n * @param {Object[]} sourceKeySystems\n * The key systems options from the player source\n * @param {Object} media\n * The active media playlist\n * @param {Object} [audioMedia]\n * The active audio media playlist (optional)\n *\n * @return {boolean}\n * Whether or not options were configured and EME is available\n */\n\nconst setupEmeOptions = ({\n player,\n sourceKeySystems,\n media,\n audioMedia\n}) => {\n const sourceOptions = emeKeySystems(sourceKeySystems, media, audioMedia);\n if (!sourceOptions) {\n return false;\n }\n player.currentSource().keySystems = sourceOptions; // eme handles the rest of the setup, so if it is missing\n // do nothing.\n\n if (sourceOptions && !player.eme) {\n videojs.log.warn('DRM encrypted source cannot be decrypted without a DRM plugin');\n return false;\n }\n return true;\n};\nconst getVhsLocalStorage = () => {\n if (!window$1.localStorage) {\n return null;\n }\n const storedObject = window$1.localStorage.getItem(LOCAL_STORAGE_KEY);\n if (!storedObject) {\n return null;\n }\n try {\n return JSON.parse(storedObject);\n } catch (e) {\n // someone may have tampered with the value\n return null;\n }\n};\nconst updateVhsLocalStorage = options => {\n if (!window$1.localStorage) {\n return false;\n }\n let objectToStore = getVhsLocalStorage();\n objectToStore = objectToStore ? merge(objectToStore, options) : options;\n try {\n window$1.localStorage.setItem(LOCAL_STORAGE_KEY, JSON.stringify(objectToStore));\n } catch (e) {\n // Throws if storage is full (e.g., always on iOS 5+ Safari private mode, where\n // storage is set to 0).\n // https://developer.mozilla.org/en-US/docs/Web/API/Storage/setItem#Exceptions\n // No need to perform any operation.\n return false;\n }\n return objectToStore;\n};\n/**\n * Parses VHS-supported media types from data URIs. See\n * https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URIs\n * for information on data URIs.\n *\n * @param {string} dataUri\n * The data URI\n *\n * @return {string|Object}\n * The parsed object/string, or the original string if no supported media type\n * was found\n */\n\nconst expandDataUri = dataUri => {\n if (dataUri.toLowerCase().indexOf('data:application/vnd.videojs.vhs+json,') === 0) {\n return JSON.parse(dataUri.substring(dataUri.indexOf(',') + 1));\n } // no known case for this data URI, return the string as-is\n\n return dataUri;\n};\n/**\n * Adds a request hook to an xhr object\n *\n * @param {Object} xhr object to add the onRequest hook to\n * @param {function} callback hook function for an xhr request\n */\n\nconst addOnRequestHook = (xhr, callback) => {\n if (!xhr._requestCallbackSet) {\n xhr._requestCallbackSet = new Set();\n }\n xhr._requestCallbackSet.add(callback);\n};\n/**\n * Adds a response hook to an xhr object\n *\n * @param {Object} xhr object to add the onResponse hook to\n * @param {function} callback hook function for an xhr response\n */\n\nconst addOnResponseHook = (xhr, callback) => {\n if (!xhr._responseCallbackSet) {\n xhr._responseCallbackSet = new Set();\n }\n xhr._responseCallbackSet.add(callback);\n};\n/**\n * Removes a request hook on an xhr object, deletes the onRequest set if empty.\n *\n * @param {Object} xhr object to remove the onRequest hook from\n * @param {function} callback hook function to remove\n */\n\nconst removeOnRequestHook = (xhr, callback) => {\n if (!xhr._requestCallbackSet) {\n return;\n }\n xhr._requestCallbackSet.delete(callback);\n if (!xhr._requestCallbackSet.size) {\n delete xhr._requestCallbackSet;\n }\n};\n/**\n * Removes a response hook on an xhr object, deletes the onResponse set if empty.\n *\n * @param {Object} xhr object to remove the onResponse hook from\n * @param {function} callback hook function to remove\n */\n\nconst removeOnResponseHook = (xhr, callback) => {\n if (!xhr._responseCallbackSet) {\n return;\n }\n xhr._responseCallbackSet.delete(callback);\n if (!xhr._responseCallbackSet.size) {\n delete xhr._responseCallbackSet;\n }\n};\n/**\n * Whether the browser has built-in HLS support.\n */\n\nVhs.supportsNativeHls = function () {\n if (!document || !document.createElement) {\n return false;\n }\n const video = document.createElement('video'); // native HLS is definitely not supported if HTML5 video isn't\n\n if (!videojs.getTech('Html5').isSupported()) {\n return false;\n } // HLS manifests can go by many mime-types\n\n const canPlay = [\n // Apple santioned\n 'application/vnd.apple.mpegurl',\n // Apple sanctioned for backwards compatibility\n 'audio/mpegurl',\n // Very common\n 'audio/x-mpegurl',\n // Very common\n 'application/x-mpegurl',\n // Included for completeness\n 'video/x-mpegurl', 'video/mpegurl', 'application/mpegurl'];\n return canPlay.some(function (canItPlay) {\n return /maybe|probably/i.test(video.canPlayType(canItPlay));\n });\n}();\nVhs.supportsNativeDash = function () {\n if (!document || !document.createElement || !videojs.getTech('Html5').isSupported()) {\n return false;\n }\n return /maybe|probably/i.test(document.createElement('video').canPlayType('application/dash+xml'));\n}();\nVhs.supportsTypeNatively = type => {\n if (type === 'hls') {\n return Vhs.supportsNativeHls;\n }\n if (type === 'dash') {\n return Vhs.supportsNativeDash;\n }\n return false;\n};\n/**\n * VHS is a source handler, not a tech. Make sure attempts to use it\n * as one do not cause exceptions.\n */\n\nVhs.isSupported = function () {\n return videojs.log.warn('VHS is no longer a tech. Please remove it from ' + 'your player\\'s techOrder.');\n};\n/**\n * A global function for setting an onRequest hook\n *\n * @param {function} callback for request modifiction\n */\n\nVhs.xhr.onRequest = function (callback) {\n addOnRequestHook(Vhs.xhr, callback);\n};\n/**\n * A global function for setting an onResponse hook\n *\n * @param {callback} callback for response data retrieval\n */\n\nVhs.xhr.onResponse = function (callback) {\n addOnResponseHook(Vhs.xhr, callback);\n};\n/**\n * Deletes a global onRequest callback if it exists\n *\n * @param {function} callback to delete from the global set\n */\n\nVhs.xhr.offRequest = function (callback) {\n removeOnRequestHook(Vhs.xhr, callback);\n};\n/**\n * Deletes a global onResponse callback if it exists\n *\n * @param {function} callback to delete from the global set\n */\n\nVhs.xhr.offResponse = function (callback) {\n removeOnResponseHook(Vhs.xhr, callback);\n};\nconst Component = videojs.getComponent('Component');\n/**\n * The Vhs Handler object, where we orchestrate all of the parts\n * of VHS to interact with video.js\n *\n * @class VhsHandler\n * @extends videojs.Component\n * @param {Object} source the soruce object\n * @param {Tech} tech the parent tech object\n * @param {Object} options optional and required options\n */\n\nclass VhsHandler extends Component {\n constructor(source, tech, options) {\n super(tech, options.vhs); // if a tech level `initialBandwidth` option was passed\n // use that over the VHS level `bandwidth` option\n\n if (typeof options.initialBandwidth === 'number') {\n this.options_.bandwidth = options.initialBandwidth;\n }\n this.logger_ = logger('VhsHandler'); // we need access to the player in some cases,\n // so, get it from Video.js via the `playerId`\n\n if (tech.options_ && tech.options_.playerId) {\n const _player = videojs.getPlayer(tech.options_.playerId);\n this.player_ = _player;\n }\n this.tech_ = tech;\n this.source_ = source;\n this.stats = {};\n this.ignoreNextSeekingEvent_ = false;\n this.setOptions_();\n if (this.options_.overrideNative && tech.overrideNativeAudioTracks && tech.overrideNativeVideoTracks) {\n tech.overrideNativeAudioTracks(true);\n tech.overrideNativeVideoTracks(true);\n } else if (this.options_.overrideNative && (tech.featuresNativeVideoTracks || tech.featuresNativeAudioTracks)) {\n // overriding native VHS only works if audio tracks have been emulated\n // error early if we're misconfigured\n throw new Error('Overriding native VHS requires emulated tracks. ' + 'See https://git.io/vMpjB');\n } // listen for fullscreenchange events for this player so that we\n // can adjust our quality selection quickly\n\n this.on(document, ['fullscreenchange', 'webkitfullscreenchange', 'mozfullscreenchange', 'MSFullscreenChange'], event => {\n const fullscreenElement = document.fullscreenElement || document.webkitFullscreenElement || document.mozFullScreenElement || document.msFullscreenElement;\n if (fullscreenElement && fullscreenElement.contains(this.tech_.el())) {\n this.playlistController_.fastQualityChange_();\n } else {\n // When leaving fullscreen, since the in page pixel dimensions should be smaller\n // than full screen, see if there should be a rendition switch down to preserve\n // bandwidth.\n this.playlistController_.checkABR_();\n }\n });\n this.on(this.tech_, 'seeking', function () {\n if (this.ignoreNextSeekingEvent_) {\n this.ignoreNextSeekingEvent_ = false;\n return;\n }\n this.setCurrentTime(this.tech_.currentTime());\n });\n this.on(this.tech_, 'error', function () {\n // verify that the error was real and we are loaded\n // enough to have pc loaded.\n if (this.tech_.error() && this.playlistController_) {\n this.playlistController_.pauseLoading();\n }\n });\n this.on(this.tech_, 'play', this.play);\n }\n setOptions_() {\n // defaults\n this.options_.withCredentials = this.options_.withCredentials || false;\n this.options_.limitRenditionByPlayerDimensions = this.options_.limitRenditionByPlayerDimensions === false ? false : true;\n this.options_.useDevicePixelRatio = this.options_.useDevicePixelRatio || false;\n this.options_.useBandwidthFromLocalStorage = typeof this.source_.useBandwidthFromLocalStorage !== 'undefined' ? this.source_.useBandwidthFromLocalStorage : this.options_.useBandwidthFromLocalStorage || false;\n this.options_.useForcedSubtitles = this.options_.useForcedSubtitles || false;\n this.options_.useNetworkInformationApi = this.options_.useNetworkInformationApi || false;\n this.options_.useDtsForTimestampOffset = this.options_.useDtsForTimestampOffset || false;\n this.options_.calculateTimestampOffsetForEachSegment = this.options_.calculateTimestampOffsetForEachSegment || false;\n this.options_.customTagParsers = this.options_.customTagParsers || [];\n this.options_.customTagMappers = this.options_.customTagMappers || [];\n this.options_.cacheEncryptionKeys = this.options_.cacheEncryptionKeys || false;\n this.options_.llhls = this.options_.llhls === false ? false : true;\n this.options_.bufferBasedABR = this.options_.bufferBasedABR || false;\n if (typeof this.options_.playlistExclusionDuration !== 'number') {\n this.options_.playlistExclusionDuration = 60;\n }\n if (typeof this.options_.bandwidth !== 'number') {\n if (this.options_.useBandwidthFromLocalStorage) {\n const storedObject = getVhsLocalStorage();\n if (storedObject && storedObject.bandwidth) {\n this.options_.bandwidth = storedObject.bandwidth;\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-bandwidth-from-local-storage'\n });\n }\n if (storedObject && storedObject.throughput) {\n this.options_.throughput = storedObject.throughput;\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-throughput-from-local-storage'\n });\n }\n }\n } // if bandwidth was not set by options or pulled from local storage, start playlist\n // selection at a reasonable bandwidth\n\n if (typeof this.options_.bandwidth !== 'number') {\n this.options_.bandwidth = Config.INITIAL_BANDWIDTH;\n } // If the bandwidth number is unchanged from the initial setting\n // then this takes precedence over the enableLowInitialPlaylist option\n\n this.options_.enableLowInitialPlaylist = this.options_.enableLowInitialPlaylist && this.options_.bandwidth === Config.INITIAL_BANDWIDTH; // grab options passed to player.src\n\n ['withCredentials', 'useDevicePixelRatio', 'limitRenditionByPlayerDimensions', 'bandwidth', 'customTagParsers', 'customTagMappers', 'cacheEncryptionKeys', 'playlistSelector', 'initialPlaylistSelector', 'bufferBasedABR', 'liveRangeSafeTimeDelta', 'llhls', 'useForcedSubtitles', 'useNetworkInformationApi', 'useDtsForTimestampOffset', 'calculateTimestampOffsetForEachSegment', 'exactManifestTimings', 'leastPixelDiffSelector'].forEach(option => {\n if (typeof this.source_[option] !== 'undefined') {\n this.options_[option] = this.source_[option];\n }\n });\n this.limitRenditionByPlayerDimensions = this.options_.limitRenditionByPlayerDimensions;\n this.useDevicePixelRatio = this.options_.useDevicePixelRatio;\n }\n /**\n * called when player.src gets called, handle a new source\n *\n * @param {Object} src the source object to handle\n */\n\n src(src, type) {\n // do nothing if the src is falsey\n if (!src) {\n return;\n }\n this.setOptions_(); // add main playlist controller options\n\n this.options_.src = expandDataUri(this.source_.src);\n this.options_.tech = this.tech_;\n this.options_.externVhs = Vhs;\n this.options_.sourceType = simpleTypeFromSourceType(type); // Whenever we seek internally, we should update the tech\n\n this.options_.seekTo = time => {\n this.tech_.setCurrentTime(time);\n };\n this.playlistController_ = new PlaylistController(this.options_);\n const playbackWatcherOptions = merge({\n liveRangeSafeTimeDelta: SAFE_TIME_DELTA\n }, this.options_, {\n seekable: () => this.seekable(),\n media: () => this.playlistController_.media(),\n playlistController: this.playlistController_\n });\n this.playbackWatcher_ = new PlaybackWatcher(playbackWatcherOptions);\n this.playlistController_.on('error', () => {\n const player = videojs.players[this.tech_.options_.playerId];\n let error = this.playlistController_.error;\n if (typeof error === 'object' && !error.code) {\n error.code = 3;\n } else if (typeof error === 'string') {\n error = {\n message: error,\n code: 3\n };\n }\n player.error(error);\n });\n const defaultSelector = this.options_.bufferBasedABR ? Vhs.movingAverageBandwidthSelector(0.55) : Vhs.STANDARD_PLAYLIST_SELECTOR; // `this` in selectPlaylist should be the VhsHandler for backwards\n // compatibility with < v2\n\n this.playlistController_.selectPlaylist = this.selectPlaylist ? this.selectPlaylist.bind(this) : defaultSelector.bind(this);\n this.playlistController_.selectInitialPlaylist = Vhs.INITIAL_PLAYLIST_SELECTOR.bind(this); // re-expose some internal objects for backwards compatibility with < v2\n\n this.playlists = this.playlistController_.mainPlaylistLoader_;\n this.mediaSource = this.playlistController_.mediaSource; // Proxy assignment of some properties to the main playlist\n // controller. Using a custom property for backwards compatibility\n // with < v2\n\n Object.defineProperties(this, {\n selectPlaylist: {\n get() {\n return this.playlistController_.selectPlaylist;\n },\n set(selectPlaylist) {\n this.playlistController_.selectPlaylist = selectPlaylist.bind(this);\n }\n },\n throughput: {\n get() {\n return this.playlistController_.mainSegmentLoader_.throughput.rate;\n },\n set(throughput) {\n this.playlistController_.mainSegmentLoader_.throughput.rate = throughput; // By setting `count` to 1 the throughput value becomes the starting value\n // for the cumulative average\n\n this.playlistController_.mainSegmentLoader_.throughput.count = 1;\n }\n },\n bandwidth: {\n get() {\n let playerBandwidthEst = this.playlistController_.mainSegmentLoader_.bandwidth;\n const networkInformation = window$1.navigator.connection || window$1.navigator.mozConnection || window$1.navigator.webkitConnection;\n const tenMbpsAsBitsPerSecond = 10e6;\n if (this.options_.useNetworkInformationApi && networkInformation) {\n // downlink returns Mbps\n // https://developer.mozilla.org/en-US/docs/Web/API/NetworkInformation/downlink\n const networkInfoBandwidthEstBitsPerSec = networkInformation.downlink * 1000 * 1000; // downlink maxes out at 10 Mbps. In the event that both networkInformationApi and the player\n // estimate a bandwidth greater than 10 Mbps, use the larger of the two estimates to ensure that\n // high quality streams are not filtered out.\n\n if (networkInfoBandwidthEstBitsPerSec >= tenMbpsAsBitsPerSecond && playerBandwidthEst >= tenMbpsAsBitsPerSecond) {\n playerBandwidthEst = Math.max(playerBandwidthEst, networkInfoBandwidthEstBitsPerSec);\n } else {\n playerBandwidthEst = networkInfoBandwidthEstBitsPerSec;\n }\n }\n return playerBandwidthEst;\n },\n set(bandwidth) {\n this.playlistController_.mainSegmentLoader_.bandwidth = bandwidth; // setting the bandwidth manually resets the throughput counter\n // `count` is set to zero that current value of `rate` isn't included\n // in the cumulative average\n\n this.playlistController_.mainSegmentLoader_.throughput = {\n rate: 0,\n count: 0\n };\n }\n },\n /**\n * `systemBandwidth` is a combination of two serial processes bit-rates. The first\n * is the network bitrate provided by `bandwidth` and the second is the bitrate of\n * the entire process after that - decryption, transmuxing, and appending - provided\n * by `throughput`.\n *\n * Since the two process are serial, the overall system bandwidth is given by:\n * sysBandwidth = 1 / (1 / bandwidth + 1 / throughput)\n */\n systemBandwidth: {\n get() {\n const invBandwidth = 1 / (this.bandwidth || 1);\n let invThroughput;\n if (this.throughput > 0) {\n invThroughput = 1 / this.throughput;\n } else {\n invThroughput = 0;\n }\n const systemBitrate = Math.floor(1 / (invBandwidth + invThroughput));\n return systemBitrate;\n },\n set() {\n videojs.log.error('The \"systemBandwidth\" property is read-only');\n }\n }\n });\n if (this.options_.bandwidth) {\n this.bandwidth = this.options_.bandwidth;\n }\n if (this.options_.throughput) {\n this.throughput = this.options_.throughput;\n }\n Object.defineProperties(this.stats, {\n bandwidth: {\n get: () => this.bandwidth || 0,\n enumerable: true\n },\n mediaRequests: {\n get: () => this.playlistController_.mediaRequests_() || 0,\n enumerable: true\n },\n mediaRequestsAborted: {\n get: () => this.playlistController_.mediaRequestsAborted_() || 0,\n enumerable: true\n },\n mediaRequestsTimedout: {\n get: () => this.playlistController_.mediaRequestsTimedout_() || 0,\n enumerable: true\n },\n mediaRequestsErrored: {\n get: () => this.playlistController_.mediaRequestsErrored_() || 0,\n enumerable: true\n },\n mediaTransferDuration: {\n get: () => this.playlistController_.mediaTransferDuration_() || 0,\n enumerable: true\n },\n mediaBytesTransferred: {\n get: () => this.playlistController_.mediaBytesTransferred_() || 0,\n enumerable: true\n },\n mediaSecondsLoaded: {\n get: () => this.playlistController_.mediaSecondsLoaded_() || 0,\n enumerable: true\n },\n mediaAppends: {\n get: () => this.playlistController_.mediaAppends_() || 0,\n enumerable: true\n },\n mainAppendsToLoadedData: {\n get: () => this.playlistController_.mainAppendsToLoadedData_() || 0,\n enumerable: true\n },\n audioAppendsToLoadedData: {\n get: () => this.playlistController_.audioAppendsToLoadedData_() || 0,\n enumerable: true\n },\n appendsToLoadedData: {\n get: () => this.playlistController_.appendsToLoadedData_() || 0,\n enumerable: true\n },\n timeToLoadedData: {\n get: () => this.playlistController_.timeToLoadedData_() || 0,\n enumerable: true\n },\n buffered: {\n get: () => timeRangesToArray(this.tech_.buffered()),\n enumerable: true\n },\n currentTime: {\n get: () => this.tech_.currentTime(),\n enumerable: true\n },\n currentSource: {\n get: () => this.tech_.currentSource_,\n enumerable: true\n },\n currentTech: {\n get: () => this.tech_.name_,\n enumerable: true\n },\n duration: {\n get: () => this.tech_.duration(),\n enumerable: true\n },\n main: {\n get: () => this.playlists.main,\n enumerable: true\n },\n playerDimensions: {\n get: () => this.tech_.currentDimensions(),\n enumerable: true\n },\n seekable: {\n get: () => timeRangesToArray(this.tech_.seekable()),\n enumerable: true\n },\n timestamp: {\n get: () => Date.now(),\n enumerable: true\n },\n videoPlaybackQuality: {\n get: () => this.tech_.getVideoPlaybackQuality(),\n enumerable: true\n }\n });\n this.tech_.one('canplay', this.playlistController_.setupFirstPlay.bind(this.playlistController_));\n this.tech_.on('bandwidthupdate', () => {\n if (this.options_.useBandwidthFromLocalStorage) {\n updateVhsLocalStorage({\n bandwidth: this.bandwidth,\n throughput: Math.round(this.throughput)\n });\n }\n });\n this.playlistController_.on('selectedinitialmedia', () => {\n // Add the manual rendition mix-in to VhsHandler\n renditionSelectionMixin(this);\n });\n this.playlistController_.sourceUpdater_.on('createdsourcebuffers', () => {\n this.setupEme_();\n }); // the bandwidth of the primary segment loader is our best\n // estimate of overall bandwidth\n\n this.on(this.playlistController_, 'progress', function () {\n this.tech_.trigger('progress');\n }); // In the live case, we need to ignore the very first `seeking` event since\n // that will be the result of the seek-to-live behavior\n\n this.on(this.playlistController_, 'firstplay', function () {\n this.ignoreNextSeekingEvent_ = true;\n });\n this.setupQualityLevels_(); // do nothing if the tech has been disposed already\n // this can occur if someone sets the src in player.ready(), for instance\n\n if (!this.tech_.el()) {\n return;\n }\n this.mediaSourceUrl_ = window$1.URL.createObjectURL(this.playlistController_.mediaSource);\n this.tech_.src(this.mediaSourceUrl_);\n }\n createKeySessions_() {\n const audioPlaylistLoader = this.playlistController_.mediaTypes_.AUDIO.activePlaylistLoader;\n this.logger_('waiting for EME key session creation');\n waitForKeySessionCreation({\n player: this.player_,\n sourceKeySystems: this.source_.keySystems,\n audioMedia: audioPlaylistLoader && audioPlaylistLoader.media(),\n mainPlaylists: this.playlists.main.playlists\n }).then(() => {\n this.logger_('created EME key session');\n this.playlistController_.sourceUpdater_.initializedEme();\n }).catch(err => {\n this.logger_('error while creating EME key session', err);\n this.player_.error({\n message: 'Failed to initialize media keys for EME',\n code: 3\n });\n });\n }\n handleWaitingForKey_() {\n // If waitingforkey is fired, it's possible that the data that's necessary to retrieve\n // the key is in the manifest. While this should've happened on initial source load, it\n // may happen again in live streams where the keys change, and the manifest info\n // reflects the update.\n //\n // Because videojs-contrib-eme compares the PSSH data we send to that of PSSH data it's\n // already requested keys for, we don't have to worry about this generating extraneous\n // requests.\n this.logger_('waitingforkey fired, attempting to create any new key sessions');\n this.createKeySessions_();\n }\n /**\n * If necessary and EME is available, sets up EME options and waits for key session\n * creation.\n *\n * This function also updates the source updater so taht it can be used, as for some\n * browsers, EME must be configured before content is appended (if appending unencrypted\n * content before encrypted content).\n */\n\n setupEme_() {\n const audioPlaylistLoader = this.playlistController_.mediaTypes_.AUDIO.activePlaylistLoader;\n const didSetupEmeOptions = setupEmeOptions({\n player: this.player_,\n sourceKeySystems: this.source_.keySystems,\n media: this.playlists.media(),\n audioMedia: audioPlaylistLoader && audioPlaylistLoader.media()\n });\n this.player_.tech_.on('keystatuschange', e => {\n if (e.status !== 'output-restricted') {\n return;\n }\n const mainPlaylist = this.playlistController_.main();\n if (!mainPlaylist || !mainPlaylist.playlists) {\n return;\n }\n const excludedHDPlaylists = []; // Assume all HD streams are unplayable and exclude them from ABR selection\n\n mainPlaylist.playlists.forEach(playlist => {\n if (playlist && playlist.attributes && playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.height >= 720) {\n if (!playlist.excludeUntil || playlist.excludeUntil < Infinity) {\n playlist.excludeUntil = Infinity;\n excludedHDPlaylists.push(playlist);\n }\n }\n });\n if (excludedHDPlaylists.length) {\n videojs.log.warn('DRM keystatus changed to \"output-restricted.\" Removing the following HD playlists ' + 'that will most likely fail to play and clearing the buffer. ' + 'This may be due to HDCP restrictions on the stream and the capabilities of the current device.', ...excludedHDPlaylists); // Clear the buffer before switching playlists, since it may already contain unplayable segments\n\n this.playlistController_.mainSegmentLoader_.resetEverything();\n this.playlistController_.fastQualityChange_();\n }\n });\n this.handleWaitingForKey_ = this.handleWaitingForKey_.bind(this);\n this.player_.tech_.on('waitingforkey', this.handleWaitingForKey_);\n if (!didSetupEmeOptions) {\n // If EME options were not set up, we've done all we could to initialize EME.\n this.playlistController_.sourceUpdater_.initializedEme();\n return;\n }\n this.createKeySessions_();\n }\n /**\n * Initializes the quality levels and sets listeners to update them.\n *\n * @method setupQualityLevels_\n * @private\n */\n\n setupQualityLevels_() {\n const player = videojs.players[this.tech_.options_.playerId]; // if there isn't a player or there isn't a qualityLevels plugin\n // or qualityLevels_ listeners have already been setup, do nothing.\n\n if (!player || !player.qualityLevels || this.qualityLevels_) {\n return;\n }\n this.qualityLevels_ = player.qualityLevels();\n this.playlistController_.on('selectedinitialmedia', () => {\n handleVhsLoadedMetadata(this.qualityLevels_, this);\n });\n this.playlists.on('mediachange', () => {\n handleVhsMediaChange(this.qualityLevels_, this.playlists);\n });\n }\n /**\n * return the version\n */\n\n static version() {\n return {\n '@videojs/http-streaming': version$4,\n 'mux.js': version$3,\n 'mpd-parser': version$2,\n 'm3u8-parser': version$1,\n 'aes-decrypter': version\n };\n }\n /**\n * return the version\n */\n\n version() {\n return this.constructor.version();\n }\n canChangeType() {\n return SourceUpdater.canChangeType();\n }\n /**\n * Begin playing the video.\n */\n\n play() {\n this.playlistController_.play();\n }\n /**\n * a wrapper around the function in PlaylistController\n */\n\n setCurrentTime(currentTime) {\n this.playlistController_.setCurrentTime(currentTime);\n }\n /**\n * a wrapper around the function in PlaylistController\n */\n\n duration() {\n return this.playlistController_.duration();\n }\n /**\n * a wrapper around the function in PlaylistController\n */\n\n seekable() {\n return this.playlistController_.seekable();\n }\n /**\n * Abort all outstanding work and cleanup.\n */\n\n dispose() {\n if (this.playbackWatcher_) {\n this.playbackWatcher_.dispose();\n }\n if (this.playlistController_) {\n this.playlistController_.dispose();\n }\n if (this.qualityLevels_) {\n this.qualityLevels_.dispose();\n }\n if (this.tech_ && this.tech_.vhs) {\n delete this.tech_.vhs;\n }\n if (this.mediaSourceUrl_ && window$1.URL.revokeObjectURL) {\n window$1.URL.revokeObjectURL(this.mediaSourceUrl_);\n this.mediaSourceUrl_ = null;\n }\n if (this.tech_) {\n this.tech_.off('waitingforkey', this.handleWaitingForKey_);\n }\n super.dispose();\n }\n convertToProgramTime(time, callback) {\n return getProgramTime({\n playlist: this.playlistController_.media(),\n time,\n callback\n });\n } // the player must be playing before calling this\n\n seekToProgramTime(programTime, callback, pauseAfterSeek = true, retryCount = 2) {\n return seekToProgramTime({\n programTime,\n playlist: this.playlistController_.media(),\n retryCount,\n pauseAfterSeek,\n seekTo: this.options_.seekTo,\n tech: this.options_.tech,\n callback\n });\n }\n /**\n * Adds the onRequest, onResponse, offRequest and offResponse functions\n * to the VhsHandler xhr Object.\n */\n\n setupXhrHooks_() {\n /**\n * A player function for setting an onRequest hook\n *\n * @param {function} callback for request modifiction\n */\n this.xhr.onRequest = callback => {\n addOnRequestHook(this.xhr, callback);\n };\n /**\n * A player function for setting an onResponse hook\n *\n * @param {callback} callback for response data retrieval\n */\n\n this.xhr.onResponse = callback => {\n addOnResponseHook(this.xhr, callback);\n };\n /**\n * Deletes a player onRequest callback if it exists\n *\n * @param {function} callback to delete from the player set\n */\n\n this.xhr.offRequest = callback => {\n removeOnRequestHook(this.xhr, callback);\n };\n /**\n * Deletes a player onResponse callback if it exists\n *\n * @param {function} callback to delete from the player set\n */\n\n this.xhr.offResponse = callback => {\n removeOnResponseHook(this.xhr, callback);\n }; // Trigger an event on the player to notify the user that vhs is ready to set xhr hooks.\n // This allows hooks to be set before the source is set to vhs when handleSource is called.\n\n this.player_.trigger('xhr-hooks-ready');\n }\n}\n/**\n * The Source Handler object, which informs video.js what additional\n * MIME types are supported and sets up playback. It is registered\n * automatically to the appropriate tech based on the capabilities of\n * the browser it is running in. It is not necessary to use or modify\n * this object in normal usage.\n */\n\nconst VhsSourceHandler = {\n name: 'videojs-http-streaming',\n VERSION: version$4,\n canHandleSource(srcObj, options = {}) {\n const localOptions = merge(videojs.options, options);\n return VhsSourceHandler.canPlayType(srcObj.type, localOptions);\n },\n handleSource(source, tech, options = {}) {\n const localOptions = merge(videojs.options, options);\n tech.vhs = new VhsHandler(source, tech, localOptions);\n tech.vhs.xhr = xhrFactory();\n tech.vhs.setupXhrHooks_();\n tech.vhs.src(source.src, source.type);\n return tech.vhs;\n },\n canPlayType(type, options) {\n const simpleType = simpleTypeFromSourceType(type);\n if (!simpleType) {\n return '';\n }\n const overrideNative = VhsSourceHandler.getOverrideNative(options);\n const supportsTypeNatively = Vhs.supportsTypeNatively(simpleType);\n const canUseMsePlayback = !supportsTypeNatively || overrideNative;\n return canUseMsePlayback ? 'maybe' : '';\n },\n getOverrideNative(options = {}) {\n const {\n vhs = {}\n } = options;\n const defaultOverrideNative = !(videojs.browser.IS_ANY_SAFARI || videojs.browser.IS_IOS);\n const {\n overrideNative = defaultOverrideNative\n } = vhs;\n return overrideNative;\n }\n};\n/**\n * Check to see if the native MediaSource object exists and supports\n * an MP4 container with both H.264 video and AAC-LC audio.\n *\n * @return {boolean} if native media sources are supported\n */\n\nconst supportsNativeMediaSources = () => {\n return browserSupportsCodec('avc1.4d400d,mp4a.40.2');\n}; // register source handlers with the appropriate techs\n\nif (supportsNativeMediaSources()) {\n videojs.getTech('Html5').registerSourceHandler(VhsSourceHandler, 0);\n}\nvideojs.VhsHandler = VhsHandler;\nvideojs.VhsSourceHandler = VhsSourceHandler;\nvideojs.Vhs = Vhs;\nif (!videojs.use) {\n videojs.registerComponent('Vhs', Vhs);\n}\nvideojs.options.vhs = videojs.options.vhs || {};\nif (!videojs.getPlugin || !videojs.getPlugin('reloadSourceOnError')) {\n videojs.registerPlugin('reloadSourceOnError', reloadSourceOnError);\n}\n\nexport { videojs as default };\n","/**\n * Copyright 2013 vtt.js Contributors\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n// Default exports for Node. Export the extended versions of VTTCue and\n// VTTRegion in Node since we likely want the capability to convert back and\n// forth between JSON. If we don't then it's not that big of a deal since we're\n// off browser.\n\nvar window = require('global/window');\n\nvar vttjs = module.exports = {\n WebVTT: require(\"./vtt.js\"),\n VTTCue: require(\"./vttcue.js\"),\n VTTRegion: require(\"./vttregion.js\")\n};\n\nwindow.vttjs = vttjs;\nwindow.WebVTT = vttjs.WebVTT;\n\nvar cueShim = vttjs.VTTCue;\nvar regionShim = vttjs.VTTRegion;\nvar nativeVTTCue = window.VTTCue;\nvar nativeVTTRegion = window.VTTRegion;\n\nvttjs.shim = function() {\n window.VTTCue = cueShim;\n window.VTTRegion = regionShim;\n};\n\nvttjs.restore = function() {\n window.VTTCue = nativeVTTCue;\n window.VTTRegion = nativeVTTRegion;\n};\n\nif (!window.VTTCue) {\n vttjs.shim();\n}\n","/**\n * Copyright 2013 vtt.js Contributors\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */\n/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */\nvar document = require('global/document');\n\nvar _objCreate = Object.create || (function() {\n function F() {}\n return function(o) {\n if (arguments.length !== 1) {\n throw new Error('Object.create shim only accepts one parameter.');\n }\n F.prototype = o;\n return new F();\n };\n})();\n\n// Creates a new ParserError object from an errorData object. The errorData\n// object should have default code and message properties. The default message\n// property can be overriden by passing in a message parameter.\n// See ParsingError.Errors below for acceptable errors.\nfunction ParsingError(errorData, message) {\n this.name = \"ParsingError\";\n this.code = errorData.code;\n this.message = message || errorData.message;\n}\nParsingError.prototype = _objCreate(Error.prototype);\nParsingError.prototype.constructor = ParsingError;\n\n// ParsingError metadata for acceptable ParsingErrors.\nParsingError.Errors = {\n BadSignature: {\n code: 0,\n message: \"Malformed WebVTT signature.\"\n },\n BadTimeStamp: {\n code: 1,\n message: \"Malformed time stamp.\"\n }\n};\n\n// Try to parse input as a time stamp.\nfunction parseTimeStamp(input) {\n\n function computeSeconds(h, m, s, f) {\n return (h | 0) * 3600 + (m | 0) * 60 + (s | 0) + (f | 0) / 1000;\n }\n\n var m = input.match(/^(\\d+):(\\d{1,2})(:\\d{1,2})?\\.(\\d{3})/);\n if (!m) {\n return null;\n }\n\n if (m[3]) {\n // Timestamp takes the form of [hours]:[minutes]:[seconds].[milliseconds]\n return computeSeconds(m[1], m[2], m[3].replace(\":\", \"\"), m[4]);\n } else if (m[1] > 59) {\n // Timestamp takes the form of [hours]:[minutes].[milliseconds]\n // First position is hours as it's over 59.\n return computeSeconds(m[1], m[2], 0, m[4]);\n } else {\n // Timestamp takes the form of [minutes]:[seconds].[milliseconds]\n return computeSeconds(0, m[1], m[2], m[4]);\n }\n}\n\n// A settings object holds key/value pairs and will ignore anything but the first\n// assignment to a specific key.\nfunction Settings() {\n this.values = _objCreate(null);\n}\n\nSettings.prototype = {\n // Only accept the first assignment to any key.\n set: function(k, v) {\n if (!this.get(k) && v !== \"\") {\n this.values[k] = v;\n }\n },\n // Return the value for a key, or a default value.\n // If 'defaultKey' is passed then 'dflt' is assumed to be an object with\n // a number of possible default values as properties where 'defaultKey' is\n // the key of the property that will be chosen; otherwise it's assumed to be\n // a single value.\n get: function(k, dflt, defaultKey) {\n if (defaultKey) {\n return this.has(k) ? this.values[k] : dflt[defaultKey];\n }\n return this.has(k) ? this.values[k] : dflt;\n },\n // Check whether we have a value for a key.\n has: function(k) {\n return k in this.values;\n },\n // Accept a setting if its one of the given alternatives.\n alt: function(k, v, a) {\n for (var n = 0; n < a.length; ++n) {\n if (v === a[n]) {\n this.set(k, v);\n break;\n }\n }\n },\n // Accept a setting if its a valid (signed) integer.\n integer: function(k, v) {\n if (/^-?\\d+$/.test(v)) { // integer\n this.set(k, parseInt(v, 10));\n }\n },\n // Accept a setting if its a valid percentage.\n percent: function(k, v) {\n var m;\n if ((m = v.match(/^([\\d]{1,3})(\\.[\\d]*)?%$/))) {\n v = parseFloat(v);\n if (v >= 0 && v <= 100) {\n this.set(k, v);\n return true;\n }\n }\n return false;\n }\n};\n\n// Helper function to parse input into groups separated by 'groupDelim', and\n// interprete each group as a key/value pair separated by 'keyValueDelim'.\nfunction parseOptions(input, callback, keyValueDelim, groupDelim) {\n var groups = groupDelim ? input.split(groupDelim) : [input];\n for (var i in groups) {\n if (typeof groups[i] !== \"string\") {\n continue;\n }\n var kv = groups[i].split(keyValueDelim);\n if (kv.length !== 2) {\n continue;\n }\n var k = kv[0].trim();\n var v = kv[1].trim();\n callback(k, v);\n }\n}\n\nfunction parseCue(input, cue, regionList) {\n // Remember the original input if we need to throw an error.\n var oInput = input;\n // 4.1 WebVTT timestamp\n function consumeTimeStamp() {\n var ts = parseTimeStamp(input);\n if (ts === null) {\n throw new ParsingError(ParsingError.Errors.BadTimeStamp,\n \"Malformed timestamp: \" + oInput);\n }\n // Remove time stamp from input.\n input = input.replace(/^[^\\sa-zA-Z-]+/, \"\");\n return ts;\n }\n\n // 4.4.2 WebVTT cue settings\n function consumeCueSettings(input, cue) {\n var settings = new Settings();\n\n parseOptions(input, function (k, v) {\n switch (k) {\n case \"region\":\n // Find the last region we parsed with the same region id.\n for (var i = regionList.length - 1; i >= 0; i--) {\n if (regionList[i].id === v) {\n settings.set(k, regionList[i].region);\n break;\n }\n }\n break;\n case \"vertical\":\n settings.alt(k, v, [\"rl\", \"lr\"]);\n break;\n case \"line\":\n var vals = v.split(\",\"),\n vals0 = vals[0];\n settings.integer(k, vals0);\n settings.percent(k, vals0) ? settings.set(\"snapToLines\", false) : null;\n settings.alt(k, vals0, [\"auto\"]);\n if (vals.length === 2) {\n settings.alt(\"lineAlign\", vals[1], [\"start\", \"center\", \"end\"]);\n }\n break;\n case \"position\":\n vals = v.split(\",\");\n settings.percent(k, vals[0]);\n if (vals.length === 2) {\n settings.alt(\"positionAlign\", vals[1], [\"start\", \"center\", \"end\"]);\n }\n break;\n case \"size\":\n settings.percent(k, v);\n break;\n case \"align\":\n settings.alt(k, v, [\"start\", \"center\", \"end\", \"left\", \"right\"]);\n break;\n }\n }, /:/, /\\s/);\n\n // Apply default values for any missing fields.\n cue.region = settings.get(\"region\", null);\n cue.vertical = settings.get(\"vertical\", \"\");\n try {\n cue.line = settings.get(\"line\", \"auto\");\n } catch (e) {}\n cue.lineAlign = settings.get(\"lineAlign\", \"start\");\n cue.snapToLines = settings.get(\"snapToLines\", true);\n cue.size = settings.get(\"size\", 100);\n // Safari still uses the old middle value and won't accept center\n try {\n cue.align = settings.get(\"align\", \"center\");\n } catch (e) {\n cue.align = settings.get(\"align\", \"middle\");\n }\n try {\n cue.position = settings.get(\"position\", \"auto\");\n } catch (e) {\n cue.position = settings.get(\"position\", {\n start: 0,\n left: 0,\n center: 50,\n middle: 50,\n end: 100,\n right: 100\n }, cue.align);\n }\n\n\n cue.positionAlign = settings.get(\"positionAlign\", {\n start: \"start\",\n left: \"start\",\n center: \"center\",\n middle: \"center\",\n end: \"end\",\n right: \"end\"\n }, cue.align);\n }\n\n function skipWhitespace() {\n input = input.replace(/^\\s+/, \"\");\n }\n\n // 4.1 WebVTT cue timings.\n skipWhitespace();\n cue.startTime = consumeTimeStamp(); // (1) collect cue start time\n skipWhitespace();\n if (input.substr(0, 3) !== \"-->\") { // (3) next characters must match \"-->\"\n throw new ParsingError(ParsingError.Errors.BadTimeStamp,\n \"Malformed time stamp (time stamps must be separated by '-->'): \" +\n oInput);\n }\n input = input.substr(3);\n skipWhitespace();\n cue.endTime = consumeTimeStamp(); // (5) collect cue end time\n\n // 4.1 WebVTT cue settings list.\n skipWhitespace();\n consumeCueSettings(input, cue);\n}\n\n// When evaluating this file as part of a Webpack bundle for server\n// side rendering, `document` is an empty object.\nvar TEXTAREA_ELEMENT = document.createElement && document.createElement(\"textarea\");\n\nvar TAG_NAME = {\n c: \"span\",\n i: \"i\",\n b: \"b\",\n u: \"u\",\n ruby: \"ruby\",\n rt: \"rt\",\n v: \"span\",\n lang: \"span\"\n};\n\n// 5.1 default text color\n// 5.2 default text background color is equivalent to text color with bg_ prefix\nvar DEFAULT_COLOR_CLASS = {\n white: 'rgba(255,255,255,1)',\n lime: 'rgba(0,255,0,1)',\n cyan: 'rgba(0,255,255,1)',\n red: 'rgba(255,0,0,1)',\n yellow: 'rgba(255,255,0,1)',\n magenta: 'rgba(255,0,255,1)',\n blue: 'rgba(0,0,255,1)',\n black: 'rgba(0,0,0,1)'\n};\n\nvar TAG_ANNOTATION = {\n v: \"title\",\n lang: \"lang\"\n};\n\nvar NEEDS_PARENT = {\n rt: \"ruby\"\n};\n\n// Parse content into a document fragment.\nfunction parseContent(window, input) {\n function nextToken() {\n // Check for end-of-string.\n if (!input) {\n return null;\n }\n\n // Consume 'n' characters from the input.\n function consume(result) {\n input = input.substr(result.length);\n return result;\n }\n\n var m = input.match(/^([^<]*)(<[^>]*>?)?/);\n // If there is some text before the next tag, return it, otherwise return\n // the tag.\n return consume(m[1] ? m[1] : m[2]);\n }\n\n function unescape(s) {\n TEXTAREA_ELEMENT.innerHTML = s;\n s = TEXTAREA_ELEMENT.textContent;\n TEXTAREA_ELEMENT.textContent = \"\";\n return s;\n }\n\n function shouldAdd(current, element) {\n return !NEEDS_PARENT[element.localName] ||\n NEEDS_PARENT[element.localName] === current.localName;\n }\n\n // Create an element for this tag.\n function createElement(type, annotation) {\n var tagName = TAG_NAME[type];\n if (!tagName) {\n return null;\n }\n var element = window.document.createElement(tagName);\n var name = TAG_ANNOTATION[type];\n if (name && annotation) {\n element[name] = annotation.trim();\n }\n return element;\n }\n\n var rootDiv = window.document.createElement(\"div\"),\n current = rootDiv,\n t,\n tagStack = [];\n\n while ((t = nextToken()) !== null) {\n if (t[0] === '<') {\n if (t[1] === \"/\") {\n // If the closing tag matches, move back up to the parent node.\n if (tagStack.length &&\n tagStack[tagStack.length - 1] === t.substr(2).replace(\">\", \"\")) {\n tagStack.pop();\n current = current.parentNode;\n }\n // Otherwise just ignore the end tag.\n continue;\n }\n var ts = parseTimeStamp(t.substr(1, t.length - 2));\n var node;\n if (ts) {\n // Timestamps are lead nodes as well.\n node = window.document.createProcessingInstruction(\"timestamp\", ts);\n current.appendChild(node);\n continue;\n }\n var m = t.match(/^<([^.\\s/0-9>]+)(\\.[^\\s\\\\>]+)?([^>\\\\]+)?(\\\\?)>?$/);\n // If we can't parse the tag, skip to the next tag.\n if (!m) {\n continue;\n }\n // Try to construct an element, and ignore the tag if we couldn't.\n node = createElement(m[1], m[3]);\n if (!node) {\n continue;\n }\n // Determine if the tag should be added based on the context of where it\n // is placed in the cuetext.\n if (!shouldAdd(current, node)) {\n continue;\n }\n // Set the class list (as a list of classes, separated by space).\n if (m[2]) {\n var classes = m[2].split('.');\n\n classes.forEach(function(cl) {\n var bgColor = /^bg_/.test(cl);\n // slice out `bg_` if it's a background color\n var colorName = bgColor ? cl.slice(3) : cl;\n\n if (DEFAULT_COLOR_CLASS.hasOwnProperty(colorName)) {\n var propName = bgColor ? 'background-color' : 'color';\n var propValue = DEFAULT_COLOR_CLASS[colorName];\n\n node.style[propName] = propValue;\n }\n });\n\n node.className = classes.join(' ');\n }\n // Append the node to the current node, and enter the scope of the new\n // node.\n tagStack.push(m[1]);\n current.appendChild(node);\n current = node;\n continue;\n }\n\n // Text nodes are leaf nodes.\n current.appendChild(window.document.createTextNode(unescape(t)));\n }\n\n return rootDiv;\n}\n\n// This is a list of all the Unicode characters that have a strong\n// right-to-left category. What this means is that these characters are\n// written right-to-left for sure. It was generated by pulling all the strong\n// right-to-left characters out of the Unicode data table. That table can\n// found at: http://www.unicode.org/Public/UNIDATA/UnicodeData.txt\nvar strongRTLRanges = [[0x5be, 0x5be], [0x5c0, 0x5c0], [0x5c3, 0x5c3], [0x5c6, 0x5c6],\n [0x5d0, 0x5ea], [0x5f0, 0x5f4], [0x608, 0x608], [0x60b, 0x60b], [0x60d, 0x60d],\n [0x61b, 0x61b], [0x61e, 0x64a], [0x66d, 0x66f], [0x671, 0x6d5], [0x6e5, 0x6e6],\n [0x6ee, 0x6ef], [0x6fa, 0x70d], [0x70f, 0x710], [0x712, 0x72f], [0x74d, 0x7a5],\n [0x7b1, 0x7b1], [0x7c0, 0x7ea], [0x7f4, 0x7f5], [0x7fa, 0x7fa], [0x800, 0x815],\n [0x81a, 0x81a], [0x824, 0x824], [0x828, 0x828], [0x830, 0x83e], [0x840, 0x858],\n [0x85e, 0x85e], [0x8a0, 0x8a0], [0x8a2, 0x8ac], [0x200f, 0x200f],\n [0xfb1d, 0xfb1d], [0xfb1f, 0xfb28], [0xfb2a, 0xfb36], [0xfb38, 0xfb3c],\n [0xfb3e, 0xfb3e], [0xfb40, 0xfb41], [0xfb43, 0xfb44], [0xfb46, 0xfbc1],\n [0xfbd3, 0xfd3d], [0xfd50, 0xfd8f], [0xfd92, 0xfdc7], [0xfdf0, 0xfdfc],\n [0xfe70, 0xfe74], [0xfe76, 0xfefc], [0x10800, 0x10805], [0x10808, 0x10808],\n [0x1080a, 0x10835], [0x10837, 0x10838], [0x1083c, 0x1083c], [0x1083f, 0x10855],\n [0x10857, 0x1085f], [0x10900, 0x1091b], [0x10920, 0x10939], [0x1093f, 0x1093f],\n [0x10980, 0x109b7], [0x109be, 0x109bf], [0x10a00, 0x10a00], [0x10a10, 0x10a13],\n [0x10a15, 0x10a17], [0x10a19, 0x10a33], [0x10a40, 0x10a47], [0x10a50, 0x10a58],\n [0x10a60, 0x10a7f], [0x10b00, 0x10b35], [0x10b40, 0x10b55], [0x10b58, 0x10b72],\n [0x10b78, 0x10b7f], [0x10c00, 0x10c48], [0x1ee00, 0x1ee03], [0x1ee05, 0x1ee1f],\n [0x1ee21, 0x1ee22], [0x1ee24, 0x1ee24], [0x1ee27, 0x1ee27], [0x1ee29, 0x1ee32],\n [0x1ee34, 0x1ee37], [0x1ee39, 0x1ee39], [0x1ee3b, 0x1ee3b], [0x1ee42, 0x1ee42],\n [0x1ee47, 0x1ee47], [0x1ee49, 0x1ee49], [0x1ee4b, 0x1ee4b], [0x1ee4d, 0x1ee4f],\n [0x1ee51, 0x1ee52], [0x1ee54, 0x1ee54], [0x1ee57, 0x1ee57], [0x1ee59, 0x1ee59],\n [0x1ee5b, 0x1ee5b], [0x1ee5d, 0x1ee5d], [0x1ee5f, 0x1ee5f], [0x1ee61, 0x1ee62],\n [0x1ee64, 0x1ee64], [0x1ee67, 0x1ee6a], [0x1ee6c, 0x1ee72], [0x1ee74, 0x1ee77],\n [0x1ee79, 0x1ee7c], [0x1ee7e, 0x1ee7e], [0x1ee80, 0x1ee89], [0x1ee8b, 0x1ee9b],\n [0x1eea1, 0x1eea3], [0x1eea5, 0x1eea9], [0x1eeab, 0x1eebb], [0x10fffd, 0x10fffd]];\n\nfunction isStrongRTLChar(charCode) {\n for (var i = 0; i < strongRTLRanges.length; i++) {\n var currentRange = strongRTLRanges[i];\n if (charCode >= currentRange[0] && charCode <= currentRange[1]) {\n return true;\n }\n }\n\n return false;\n}\n\nfunction determineBidi(cueDiv) {\n var nodeStack = [],\n text = \"\",\n charCode;\n\n if (!cueDiv || !cueDiv.childNodes) {\n return \"ltr\";\n }\n\n function pushNodes(nodeStack, node) {\n for (var i = node.childNodes.length - 1; i >= 0; i--) {\n nodeStack.push(node.childNodes[i]);\n }\n }\n\n function nextTextNode(nodeStack) {\n if (!nodeStack || !nodeStack.length) {\n return null;\n }\n\n var node = nodeStack.pop(),\n text = node.textContent || node.innerText;\n if (text) {\n // TODO: This should match all unicode type B characters (paragraph\n // separator characters). See issue #115.\n var m = text.match(/^.*(\\n|\\r)/);\n if (m) {\n nodeStack.length = 0;\n return m[0];\n }\n return text;\n }\n if (node.tagName === \"ruby\") {\n return nextTextNode(nodeStack);\n }\n if (node.childNodes) {\n pushNodes(nodeStack, node);\n return nextTextNode(nodeStack);\n }\n }\n\n pushNodes(nodeStack, cueDiv);\n while ((text = nextTextNode(nodeStack))) {\n for (var i = 0; i < text.length; i++) {\n charCode = text.charCodeAt(i);\n if (isStrongRTLChar(charCode)) {\n return \"rtl\";\n }\n }\n }\n return \"ltr\";\n}\n\nfunction computeLinePos(cue) {\n if (typeof cue.line === \"number\" &&\n (cue.snapToLines || (cue.line >= 0 && cue.line <= 100))) {\n return cue.line;\n }\n if (!cue.track || !cue.track.textTrackList ||\n !cue.track.textTrackList.mediaElement) {\n return -1;\n }\n var track = cue.track,\n trackList = track.textTrackList,\n count = 0;\n for (var i = 0; i < trackList.length && trackList[i] !== track; i++) {\n if (trackList[i].mode === \"showing\") {\n count++;\n }\n }\n return ++count * -1;\n}\n\nfunction StyleBox() {\n}\n\n// Apply styles to a div. If there is no div passed then it defaults to the\n// div on 'this'.\nStyleBox.prototype.applyStyles = function(styles, div) {\n div = div || this.div;\n for (var prop in styles) {\n if (styles.hasOwnProperty(prop)) {\n div.style[prop] = styles[prop];\n }\n }\n};\n\nStyleBox.prototype.formatStyle = function(val, unit) {\n return val === 0 ? 0 : val + unit;\n};\n\n// Constructs the computed display state of the cue (a div). Places the div\n// into the overlay which should be a block level element (usually a div).\nfunction CueStyleBox(window, cue, styleOptions) {\n StyleBox.call(this);\n this.cue = cue;\n\n // Parse our cue's text into a DOM tree rooted at 'cueDiv'. This div will\n // have inline positioning and will function as the cue background box.\n this.cueDiv = parseContent(window, cue.text);\n var styles = {\n color: \"rgba(255, 255, 255, 1)\",\n backgroundColor: \"rgba(0, 0, 0, 0.8)\",\n position: \"relative\",\n left: 0,\n right: 0,\n top: 0,\n bottom: 0,\n display: \"inline\",\n writingMode: cue.vertical === \"\" ? \"horizontal-tb\"\n : cue.vertical === \"lr\" ? \"vertical-lr\"\n : \"vertical-rl\",\n unicodeBidi: \"plaintext\"\n };\n\n this.applyStyles(styles, this.cueDiv);\n\n // Create an absolutely positioned div that will be used to position the cue\n // div. Note, all WebVTT cue-setting alignments are equivalent to the CSS\n // mirrors of them except middle instead of center on Safari.\n this.div = window.document.createElement(\"div\");\n styles = {\n direction: determineBidi(this.cueDiv),\n writingMode: cue.vertical === \"\" ? \"horizontal-tb\"\n : cue.vertical === \"lr\" ? \"vertical-lr\"\n : \"vertical-rl\",\n unicodeBidi: \"plaintext\",\n textAlign: cue.align === \"middle\" ? \"center\" : cue.align,\n font: styleOptions.font,\n whiteSpace: \"pre-line\",\n position: \"absolute\"\n };\n\n this.applyStyles(styles);\n this.div.appendChild(this.cueDiv);\n\n // Calculate the distance from the reference edge of the viewport to the text\n // position of the cue box. The reference edge will be resolved later when\n // the box orientation styles are applied.\n var textPos = 0;\n switch (cue.positionAlign) {\n case \"start\":\n case \"line-left\":\n textPos = cue.position;\n break;\n case \"center\":\n textPos = cue.position - (cue.size / 2);\n break;\n case \"end\":\n case \"line-right\":\n textPos = cue.position - cue.size;\n break;\n }\n\n // Horizontal box orientation; textPos is the distance from the left edge of the\n // area to the left edge of the box and cue.size is the distance extending to\n // the right from there.\n if (cue.vertical === \"\") {\n this.applyStyles({\n left: this.formatStyle(textPos, \"%\"),\n width: this.formatStyle(cue.size, \"%\")\n });\n // Vertical box orientation; textPos is the distance from the top edge of the\n // area to the top edge of the box and cue.size is the height extending\n // downwards from there.\n } else {\n this.applyStyles({\n top: this.formatStyle(textPos, \"%\"),\n height: this.formatStyle(cue.size, \"%\")\n });\n }\n\n this.move = function(box) {\n this.applyStyles({\n top: this.formatStyle(box.top, \"px\"),\n bottom: this.formatStyle(box.bottom, \"px\"),\n left: this.formatStyle(box.left, \"px\"),\n right: this.formatStyle(box.right, \"px\"),\n height: this.formatStyle(box.height, \"px\"),\n width: this.formatStyle(box.width, \"px\")\n });\n };\n}\nCueStyleBox.prototype = _objCreate(StyleBox.prototype);\nCueStyleBox.prototype.constructor = CueStyleBox;\n\n// Represents the co-ordinates of an Element in a way that we can easily\n// compute things with such as if it overlaps or intersects with another Element.\n// Can initialize it with either a StyleBox or another BoxPosition.\nfunction BoxPosition(obj) {\n // Either a BoxPosition was passed in and we need to copy it, or a StyleBox\n // was passed in and we need to copy the results of 'getBoundingClientRect'\n // as the object returned is readonly. All co-ordinate values are in reference\n // to the viewport origin (top left).\n var lh, height, width, top;\n if (obj.div) {\n height = obj.div.offsetHeight;\n width = obj.div.offsetWidth;\n top = obj.div.offsetTop;\n\n var rects = (rects = obj.div.childNodes) && (rects = rects[0]) &&\n rects.getClientRects && rects.getClientRects();\n obj = obj.div.getBoundingClientRect();\n // In certain cases the outter div will be slightly larger then the sum of\n // the inner div's lines. This could be due to bold text, etc, on some platforms.\n // In this case we should get the average line height and use that. This will\n // result in the desired behaviour.\n lh = rects ? Math.max((rects[0] && rects[0].height) || 0, obj.height / rects.length)\n : 0;\n\n }\n this.left = obj.left;\n this.right = obj.right;\n this.top = obj.top || top;\n this.height = obj.height || height;\n this.bottom = obj.bottom || (top + (obj.height || height));\n this.width = obj.width || width;\n this.lineHeight = lh !== undefined ? lh : obj.lineHeight;\n}\n\n// Move the box along a particular axis. Optionally pass in an amount to move\n// the box. If no amount is passed then the default is the line height of the\n// box.\nBoxPosition.prototype.move = function(axis, toMove) {\n toMove = toMove !== undefined ? toMove : this.lineHeight;\n switch (axis) {\n case \"+x\":\n this.left += toMove;\n this.right += toMove;\n break;\n case \"-x\":\n this.left -= toMove;\n this.right -= toMove;\n break;\n case \"+y\":\n this.top += toMove;\n this.bottom += toMove;\n break;\n case \"-y\":\n this.top -= toMove;\n this.bottom -= toMove;\n break;\n }\n};\n\n// Check if this box overlaps another box, b2.\nBoxPosition.prototype.overlaps = function(b2) {\n return this.left < b2.right &&\n this.right > b2.left &&\n this.top < b2.bottom &&\n this.bottom > b2.top;\n};\n\n// Check if this box overlaps any other boxes in boxes.\nBoxPosition.prototype.overlapsAny = function(boxes) {\n for (var i = 0; i < boxes.length; i++) {\n if (this.overlaps(boxes[i])) {\n return true;\n }\n }\n return false;\n};\n\n// Check if this box is within another box.\nBoxPosition.prototype.within = function(container) {\n return this.top >= container.top &&\n this.bottom <= container.bottom &&\n this.left >= container.left &&\n this.right <= container.right;\n};\n\n// Check if this box is entirely within the container or it is overlapping\n// on the edge opposite of the axis direction passed. For example, if \"+x\" is\n// passed and the box is overlapping on the left edge of the container, then\n// return true.\nBoxPosition.prototype.overlapsOppositeAxis = function(container, axis) {\n switch (axis) {\n case \"+x\":\n return this.left < container.left;\n case \"-x\":\n return this.right > container.right;\n case \"+y\":\n return this.top < container.top;\n case \"-y\":\n return this.bottom > container.bottom;\n }\n};\n\n// Find the percentage of the area that this box is overlapping with another\n// box.\nBoxPosition.prototype.intersectPercentage = function(b2) {\n var x = Math.max(0, Math.min(this.right, b2.right) - Math.max(this.left, b2.left)),\n y = Math.max(0, Math.min(this.bottom, b2.bottom) - Math.max(this.top, b2.top)),\n intersectArea = x * y;\n return intersectArea / (this.height * this.width);\n};\n\n// Convert the positions from this box to CSS compatible positions using\n// the reference container's positions. This has to be done because this\n// box's positions are in reference to the viewport origin, whereas, CSS\n// values are in referecne to their respective edges.\nBoxPosition.prototype.toCSSCompatValues = function(reference) {\n return {\n top: this.top - reference.top,\n bottom: reference.bottom - this.bottom,\n left: this.left - reference.left,\n right: reference.right - this.right,\n height: this.height,\n width: this.width\n };\n};\n\n// Get an object that represents the box's position without anything extra.\n// Can pass a StyleBox, HTMLElement, or another BoxPositon.\nBoxPosition.getSimpleBoxPosition = function(obj) {\n var height = obj.div ? obj.div.offsetHeight : obj.tagName ? obj.offsetHeight : 0;\n var width = obj.div ? obj.div.offsetWidth : obj.tagName ? obj.offsetWidth : 0;\n var top = obj.div ? obj.div.offsetTop : obj.tagName ? obj.offsetTop : 0;\n\n obj = obj.div ? obj.div.getBoundingClientRect() :\n obj.tagName ? obj.getBoundingClientRect() : obj;\n var ret = {\n left: obj.left,\n right: obj.right,\n top: obj.top || top,\n height: obj.height || height,\n bottom: obj.bottom || (top + (obj.height || height)),\n width: obj.width || width\n };\n return ret;\n};\n\n// Move a StyleBox to its specified, or next best, position. The containerBox\n// is the box that contains the StyleBox, such as a div. boxPositions are\n// a list of other boxes that the styleBox can't overlap with.\nfunction moveBoxToLinePosition(window, styleBox, containerBox, boxPositions) {\n\n // Find the best position for a cue box, b, on the video. The axis parameter\n // is a list of axis, the order of which, it will move the box along. For example:\n // Passing [\"+x\", \"-x\"] will move the box first along the x axis in the positive\n // direction. If it doesn't find a good position for it there it will then move\n // it along the x axis in the negative direction.\n function findBestPosition(b, axis) {\n var bestPosition,\n specifiedPosition = new BoxPosition(b),\n percentage = 1; // Highest possible so the first thing we get is better.\n\n for (var i = 0; i < axis.length; i++) {\n while (b.overlapsOppositeAxis(containerBox, axis[i]) ||\n (b.within(containerBox) && b.overlapsAny(boxPositions))) {\n b.move(axis[i]);\n }\n // We found a spot where we aren't overlapping anything. This is our\n // best position.\n if (b.within(containerBox)) {\n return b;\n }\n var p = b.intersectPercentage(containerBox);\n // If we're outside the container box less then we were on our last try\n // then remember this position as the best position.\n if (percentage > p) {\n bestPosition = new BoxPosition(b);\n percentage = p;\n }\n // Reset the box position to the specified position.\n b = new BoxPosition(specifiedPosition);\n }\n return bestPosition || specifiedPosition;\n }\n\n var boxPosition = new BoxPosition(styleBox),\n cue = styleBox.cue,\n linePos = computeLinePos(cue),\n axis = [];\n\n // If we have a line number to align the cue to.\n if (cue.snapToLines) {\n var size;\n switch (cue.vertical) {\n case \"\":\n axis = [ \"+y\", \"-y\" ];\n size = \"height\";\n break;\n case \"rl\":\n axis = [ \"+x\", \"-x\" ];\n size = \"width\";\n break;\n case \"lr\":\n axis = [ \"-x\", \"+x\" ];\n size = \"width\";\n break;\n }\n\n var step = boxPosition.lineHeight,\n position = step * Math.round(linePos),\n maxPosition = containerBox[size] + step,\n initialAxis = axis[0];\n\n // If the specified intial position is greater then the max position then\n // clamp the box to the amount of steps it would take for the box to\n // reach the max position.\n if (Math.abs(position) > maxPosition) {\n position = position < 0 ? -1 : 1;\n position *= Math.ceil(maxPosition / step) * step;\n }\n\n // If computed line position returns negative then line numbers are\n // relative to the bottom of the video instead of the top. Therefore, we\n // need to increase our initial position by the length or width of the\n // video, depending on the writing direction, and reverse our axis directions.\n if (linePos < 0) {\n position += cue.vertical === \"\" ? containerBox.height : containerBox.width;\n axis = axis.reverse();\n }\n\n // Move the box to the specified position. This may not be its best\n // position.\n boxPosition.move(initialAxis, position);\n\n } else {\n // If we have a percentage line value for the cue.\n var calculatedPercentage = (boxPosition.lineHeight / containerBox.height) * 100;\n\n switch (cue.lineAlign) {\n case \"center\":\n linePos -= (calculatedPercentage / 2);\n break;\n case \"end\":\n linePos -= calculatedPercentage;\n break;\n }\n\n // Apply initial line position to the cue box.\n switch (cue.vertical) {\n case \"\":\n styleBox.applyStyles({\n top: styleBox.formatStyle(linePos, \"%\")\n });\n break;\n case \"rl\":\n styleBox.applyStyles({\n left: styleBox.formatStyle(linePos, \"%\")\n });\n break;\n case \"lr\":\n styleBox.applyStyles({\n right: styleBox.formatStyle(linePos, \"%\")\n });\n break;\n }\n\n axis = [ \"+y\", \"-x\", \"+x\", \"-y\" ];\n\n // Get the box position again after we've applied the specified positioning\n // to it.\n boxPosition = new BoxPosition(styleBox);\n }\n\n var bestPosition = findBestPosition(boxPosition, axis);\n styleBox.move(bestPosition.toCSSCompatValues(containerBox));\n}\n\nfunction WebVTT() {\n // Nothing\n}\n\n// Helper to allow strings to be decoded instead of the default binary utf8 data.\nWebVTT.StringDecoder = function() {\n return {\n decode: function(data) {\n if (!data) {\n return \"\";\n }\n if (typeof data !== \"string\") {\n throw new Error(\"Error - expected string data.\");\n }\n return decodeURIComponent(encodeURIComponent(data));\n }\n };\n};\n\nWebVTT.convertCueToDOMTree = function(window, cuetext) {\n if (!window || !cuetext) {\n return null;\n }\n return parseContent(window, cuetext);\n};\n\nvar FONT_SIZE_PERCENT = 0.05;\nvar FONT_STYLE = \"sans-serif\";\nvar CUE_BACKGROUND_PADDING = \"1.5%\";\n\n// Runs the processing model over the cues and regions passed to it.\n// @param overlay A block level element (usually a div) that the computed cues\n// and regions will be placed into.\nWebVTT.processCues = function(window, cues, overlay) {\n if (!window || !cues || !overlay) {\n return null;\n }\n\n // Remove all previous children.\n while (overlay.firstChild) {\n overlay.removeChild(overlay.firstChild);\n }\n\n var paddedOverlay = window.document.createElement(\"div\");\n paddedOverlay.style.position = \"absolute\";\n paddedOverlay.style.left = \"0\";\n paddedOverlay.style.right = \"0\";\n paddedOverlay.style.top = \"0\";\n paddedOverlay.style.bottom = \"0\";\n paddedOverlay.style.margin = CUE_BACKGROUND_PADDING;\n overlay.appendChild(paddedOverlay);\n\n // Determine if we need to compute the display states of the cues. This could\n // be the case if a cue's state has been changed since the last computation or\n // if it has not been computed yet.\n function shouldCompute(cues) {\n for (var i = 0; i < cues.length; i++) {\n if (cues[i].hasBeenReset || !cues[i].displayState) {\n return true;\n }\n }\n return false;\n }\n\n // We don't need to recompute the cues' display states. Just reuse them.\n if (!shouldCompute(cues)) {\n for (var i = 0; i < cues.length; i++) {\n paddedOverlay.appendChild(cues[i].displayState);\n }\n return;\n }\n\n var boxPositions = [],\n containerBox = BoxPosition.getSimpleBoxPosition(paddedOverlay),\n fontSize = Math.round(containerBox.height * FONT_SIZE_PERCENT * 100) / 100;\n var styleOptions = {\n font: fontSize + \"px \" + FONT_STYLE\n };\n\n (function() {\n var styleBox, cue;\n\n for (var i = 0; i < cues.length; i++) {\n cue = cues[i];\n\n // Compute the intial position and styles of the cue div.\n styleBox = new CueStyleBox(window, cue, styleOptions);\n paddedOverlay.appendChild(styleBox.div);\n\n // Move the cue div to it's correct line position.\n moveBoxToLinePosition(window, styleBox, containerBox, boxPositions);\n\n // Remember the computed div so that we don't have to recompute it later\n // if we don't have too.\n cue.displayState = styleBox.div;\n\n boxPositions.push(BoxPosition.getSimpleBoxPosition(styleBox));\n }\n })();\n};\n\nWebVTT.Parser = function(window, vttjs, decoder) {\n if (!decoder) {\n decoder = vttjs;\n vttjs = {};\n }\n if (!vttjs) {\n vttjs = {};\n }\n\n this.window = window;\n this.vttjs = vttjs;\n this.state = \"INITIAL\";\n this.buffer = \"\";\n this.decoder = decoder || new TextDecoder(\"utf8\");\n this.regionList = [];\n};\n\nWebVTT.Parser.prototype = {\n // If the error is a ParsingError then report it to the consumer if\n // possible. If it's not a ParsingError then throw it like normal.\n reportOrThrowError: function(e) {\n if (e instanceof ParsingError) {\n this.onparsingerror && this.onparsingerror(e);\n } else {\n throw e;\n }\n },\n parse: function (data) {\n var self = this;\n\n // If there is no data then we won't decode it, but will just try to parse\n // whatever is in buffer already. This may occur in circumstances, for\n // example when flush() is called.\n if (data) {\n // Try to decode the data that we received.\n self.buffer += self.decoder.decode(data, {stream: true});\n }\n\n function collectNextLine() {\n var buffer = self.buffer;\n var pos = 0;\n while (pos < buffer.length && buffer[pos] !== '\\r' && buffer[pos] !== '\\n') {\n ++pos;\n }\n var line = buffer.substr(0, pos);\n // Advance the buffer early in case we fail below.\n if (buffer[pos] === '\\r') {\n ++pos;\n }\n if (buffer[pos] === '\\n') {\n ++pos;\n }\n self.buffer = buffer.substr(pos);\n return line;\n }\n\n // 3.4 WebVTT region and WebVTT region settings syntax\n function parseRegion(input) {\n var settings = new Settings();\n\n parseOptions(input, function (k, v) {\n switch (k) {\n case \"id\":\n settings.set(k, v);\n break;\n case \"width\":\n settings.percent(k, v);\n break;\n case \"lines\":\n settings.integer(k, v);\n break;\n case \"regionanchor\":\n case \"viewportanchor\":\n var xy = v.split(',');\n if (xy.length !== 2) {\n break;\n }\n // We have to make sure both x and y parse, so use a temporary\n // settings object here.\n var anchor = new Settings();\n anchor.percent(\"x\", xy[0]);\n anchor.percent(\"y\", xy[1]);\n if (!anchor.has(\"x\") || !anchor.has(\"y\")) {\n break;\n }\n settings.set(k + \"X\", anchor.get(\"x\"));\n settings.set(k + \"Y\", anchor.get(\"y\"));\n break;\n case \"scroll\":\n settings.alt(k, v, [\"up\"]);\n break;\n }\n }, /=/, /\\s/);\n\n // Create the region, using default values for any values that were not\n // specified.\n if (settings.has(\"id\")) {\n var region = new (self.vttjs.VTTRegion || self.window.VTTRegion)();\n region.width = settings.get(\"width\", 100);\n region.lines = settings.get(\"lines\", 3);\n region.regionAnchorX = settings.get(\"regionanchorX\", 0);\n region.regionAnchorY = settings.get(\"regionanchorY\", 100);\n region.viewportAnchorX = settings.get(\"viewportanchorX\", 0);\n region.viewportAnchorY = settings.get(\"viewportanchorY\", 100);\n region.scroll = settings.get(\"scroll\", \"\");\n // Register the region.\n self.onregion && self.onregion(region);\n // Remember the VTTRegion for later in case we parse any VTTCues that\n // reference it.\n self.regionList.push({\n id: settings.get(\"id\"),\n region: region\n });\n }\n }\n\n // draft-pantos-http-live-streaming-20\n // https://tools.ietf.org/html/draft-pantos-http-live-streaming-20#section-3.5\n // 3.5 WebVTT\n function parseTimestampMap(input) {\n var settings = new Settings();\n\n parseOptions(input, function(k, v) {\n switch(k) {\n case \"MPEGT\":\n settings.integer(k + 'S', v);\n break;\n case \"LOCA\":\n settings.set(k + 'L', parseTimeStamp(v));\n break;\n }\n }, /[^\\d]:/, /,/);\n\n self.ontimestampmap && self.ontimestampmap({\n \"MPEGTS\": settings.get(\"MPEGTS\"),\n \"LOCAL\": settings.get(\"LOCAL\")\n });\n }\n\n // 3.2 WebVTT metadata header syntax\n function parseHeader(input) {\n if (input.match(/X-TIMESTAMP-MAP/)) {\n // This line contains HLS X-TIMESTAMP-MAP metadata\n parseOptions(input, function(k, v) {\n switch(k) {\n case \"X-TIMESTAMP-MAP\":\n parseTimestampMap(v);\n break;\n }\n }, /=/);\n } else {\n parseOptions(input, function (k, v) {\n switch (k) {\n case \"Region\":\n // 3.3 WebVTT region metadata header syntax\n parseRegion(v);\n break;\n }\n }, /:/);\n }\n\n }\n\n // 5.1 WebVTT file parsing.\n try {\n var line;\n if (self.state === \"INITIAL\") {\n // We can't start parsing until we have the first line.\n if (!/\\r\\n|\\n/.test(self.buffer)) {\n return this;\n }\n\n line = collectNextLine();\n\n var m = line.match(/^WEBVTT([ \\t].*)?$/);\n if (!m || !m[0]) {\n throw new ParsingError(ParsingError.Errors.BadSignature);\n }\n\n self.state = \"HEADER\";\n }\n\n var alreadyCollectedLine = false;\n while (self.buffer) {\n // We can't parse a line until we have the full line.\n if (!/\\r\\n|\\n/.test(self.buffer)) {\n return this;\n }\n\n if (!alreadyCollectedLine) {\n line = collectNextLine();\n } else {\n alreadyCollectedLine = false;\n }\n\n switch (self.state) {\n case \"HEADER\":\n // 13-18 - Allow a header (metadata) under the WEBVTT line.\n if (/:/.test(line)) {\n parseHeader(line);\n } else if (!line) {\n // An empty line terminates the header and starts the body (cues).\n self.state = \"ID\";\n }\n continue;\n case \"NOTE\":\n // Ignore NOTE blocks.\n if (!line) {\n self.state = \"ID\";\n }\n continue;\n case \"ID\":\n // Check for the start of NOTE blocks.\n if (/^NOTE($|[ \\t])/.test(line)) {\n self.state = \"NOTE\";\n break;\n }\n // 19-29 - Allow any number of line terminators, then initialize new cue values.\n if (!line) {\n continue;\n }\n self.cue = new (self.vttjs.VTTCue || self.window.VTTCue)(0, 0, \"\");\n // Safari still uses the old middle value and won't accept center\n try {\n self.cue.align = \"center\";\n } catch (e) {\n self.cue.align = \"middle\";\n }\n self.state = \"CUE\";\n // 30-39 - Check if self line contains an optional identifier or timing data.\n if (line.indexOf(\"-->\") === -1) {\n self.cue.id = line;\n continue;\n }\n // Process line as start of a cue.\n /*falls through*/\n case \"CUE\":\n // 40 - Collect cue timings and settings.\n try {\n parseCue(line, self.cue, self.regionList);\n } catch (e) {\n self.reportOrThrowError(e);\n // In case of an error ignore rest of the cue.\n self.cue = null;\n self.state = \"BADCUE\";\n continue;\n }\n self.state = \"CUETEXT\";\n continue;\n case \"CUETEXT\":\n var hasSubstring = line.indexOf(\"-->\") !== -1;\n // 34 - If we have an empty line then report the cue.\n // 35 - If we have the special substring '-->' then report the cue,\n // but do not collect the line as we need to process the current\n // one as a new cue.\n if (!line || hasSubstring && (alreadyCollectedLine = true)) {\n // We are done parsing self cue.\n self.oncue && self.oncue(self.cue);\n self.cue = null;\n self.state = \"ID\";\n continue;\n }\n if (self.cue.text) {\n self.cue.text += \"\\n\";\n }\n self.cue.text += line.replace(/\\u2028/g, '\\n').replace(/u2029/g, '\\n');\n continue;\n case \"BADCUE\": // BADCUE\n // 54-62 - Collect and discard the remaining cue.\n if (!line) {\n self.state = \"ID\";\n }\n continue;\n }\n }\n } catch (e) {\n self.reportOrThrowError(e);\n\n // If we are currently parsing a cue, report what we have.\n if (self.state === \"CUETEXT\" && self.cue && self.oncue) {\n self.oncue(self.cue);\n }\n self.cue = null;\n // Enter BADWEBVTT state if header was not parsed correctly otherwise\n // another exception occurred so enter BADCUE state.\n self.state = self.state === \"INITIAL\" ? \"BADWEBVTT\" : \"BADCUE\";\n }\n return this;\n },\n flush: function () {\n var self = this;\n try {\n // Finish decoding the stream.\n self.buffer += self.decoder.decode();\n // Synthesize the end of the current cue or region.\n if (self.cue || self.state === \"HEADER\") {\n self.buffer += \"\\n\\n\";\n self.parse();\n }\n // If we've flushed, parsed, and we're still on the INITIAL state then\n // that means we don't have enough of the stream to parse the first\n // line.\n if (self.state === \"INITIAL\") {\n throw new ParsingError(ParsingError.Errors.BadSignature);\n }\n } catch(e) {\n self.reportOrThrowError(e);\n }\n self.onflush && self.onflush();\n return this;\n }\n};\n\nmodule.exports = WebVTT;\n","/**\n * Copyright 2013 vtt.js Contributors\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nvar autoKeyword = \"auto\";\nvar directionSetting = {\n \"\": 1,\n \"lr\": 1,\n \"rl\": 1\n};\nvar alignSetting = {\n \"start\": 1,\n \"center\": 1,\n \"end\": 1,\n \"left\": 1,\n \"right\": 1,\n \"auto\": 1,\n \"line-left\": 1,\n \"line-right\": 1\n};\n\nfunction findDirectionSetting(value) {\n if (typeof value !== \"string\") {\n return false;\n }\n var dir = directionSetting[value.toLowerCase()];\n return dir ? value.toLowerCase() : false;\n}\n\nfunction findAlignSetting(value) {\n if (typeof value !== \"string\") {\n return false;\n }\n var align = alignSetting[value.toLowerCase()];\n return align ? value.toLowerCase() : false;\n}\n\nfunction VTTCue(startTime, endTime, text) {\n /**\n * Shim implementation specific properties. These properties are not in\n * the spec.\n */\n\n // Lets us know when the VTTCue's data has changed in such a way that we need\n // to recompute its display state. This lets us compute its display state\n // lazily.\n this.hasBeenReset = false;\n\n /**\n * VTTCue and TextTrackCue properties\n * http://dev.w3.org/html5/webvtt/#vttcue-interface\n */\n\n var _id = \"\";\n var _pauseOnExit = false;\n var _startTime = startTime;\n var _endTime = endTime;\n var _text = text;\n var _region = null;\n var _vertical = \"\";\n var _snapToLines = true;\n var _line = \"auto\";\n var _lineAlign = \"start\";\n var _position = \"auto\";\n var _positionAlign = \"auto\";\n var _size = 100;\n var _align = \"center\";\n\n Object.defineProperties(this, {\n \"id\": {\n enumerable: true,\n get: function() {\n return _id;\n },\n set: function(value) {\n _id = \"\" + value;\n }\n },\n\n \"pauseOnExit\": {\n enumerable: true,\n get: function() {\n return _pauseOnExit;\n },\n set: function(value) {\n _pauseOnExit = !!value;\n }\n },\n\n \"startTime\": {\n enumerable: true,\n get: function() {\n return _startTime;\n },\n set: function(value) {\n if (typeof value !== \"number\") {\n throw new TypeError(\"Start time must be set to a number.\");\n }\n _startTime = value;\n this.hasBeenReset = true;\n }\n },\n\n \"endTime\": {\n enumerable: true,\n get: function() {\n return _endTime;\n },\n set: function(value) {\n if (typeof value !== \"number\") {\n throw new TypeError(\"End time must be set to a number.\");\n }\n _endTime = value;\n this.hasBeenReset = true;\n }\n },\n\n \"text\": {\n enumerable: true,\n get: function() {\n return _text;\n },\n set: function(value) {\n _text = \"\" + value;\n this.hasBeenReset = true;\n }\n },\n\n \"region\": {\n enumerable: true,\n get: function() {\n return _region;\n },\n set: function(value) {\n _region = value;\n this.hasBeenReset = true;\n }\n },\n\n \"vertical\": {\n enumerable: true,\n get: function() {\n return _vertical;\n },\n set: function(value) {\n var setting = findDirectionSetting(value);\n // Have to check for false because the setting an be an empty string.\n if (setting === false) {\n throw new SyntaxError(\"Vertical: an invalid or illegal direction string was specified.\");\n }\n _vertical = setting;\n this.hasBeenReset = true;\n }\n },\n\n \"snapToLines\": {\n enumerable: true,\n get: function() {\n return _snapToLines;\n },\n set: function(value) {\n _snapToLines = !!value;\n this.hasBeenReset = true;\n }\n },\n\n \"line\": {\n enumerable: true,\n get: function() {\n return _line;\n },\n set: function(value) {\n if (typeof value !== \"number\" && value !== autoKeyword) {\n throw new SyntaxError(\"Line: an invalid number or illegal string was specified.\");\n }\n _line = value;\n this.hasBeenReset = true;\n }\n },\n\n \"lineAlign\": {\n enumerable: true,\n get: function() {\n return _lineAlign;\n },\n set: function(value) {\n var setting = findAlignSetting(value);\n if (!setting) {\n console.warn(\"lineAlign: an invalid or illegal string was specified.\");\n } else {\n _lineAlign = setting;\n this.hasBeenReset = true;\n }\n }\n },\n\n \"position\": {\n enumerable: true,\n get: function() {\n return _position;\n },\n set: function(value) {\n if (value < 0 || value > 100) {\n throw new Error(\"Position must be between 0 and 100.\");\n }\n _position = value;\n this.hasBeenReset = true;\n }\n },\n\n \"positionAlign\": {\n enumerable: true,\n get: function() {\n return _positionAlign;\n },\n set: function(value) {\n var setting = findAlignSetting(value);\n if (!setting) {\n console.warn(\"positionAlign: an invalid or illegal string was specified.\");\n } else {\n _positionAlign = setting;\n this.hasBeenReset = true;\n }\n }\n },\n\n \"size\": {\n enumerable: true,\n get: function() {\n return _size;\n },\n set: function(value) {\n if (value < 0 || value > 100) {\n throw new Error(\"Size must be between 0 and 100.\");\n }\n _size = value;\n this.hasBeenReset = true;\n }\n },\n\n \"align\": {\n enumerable: true,\n get: function() {\n return _align;\n },\n set: function(value) {\n var setting = findAlignSetting(value);\n if (!setting) {\n throw new SyntaxError(\"align: an invalid or illegal alignment string was specified.\");\n }\n _align = setting;\n this.hasBeenReset = true;\n }\n }\n });\n\n /**\n * Other spec defined properties\n */\n\n // http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html#text-track-cue-display-state\n this.displayState = undefined;\n}\n\n/**\n * VTTCue methods\n */\n\nVTTCue.prototype.getCueAsHTML = function() {\n // Assume WebVTT.convertCueToDOMTree is on the global.\n return WebVTT.convertCueToDOMTree(window, this.text);\n};\n\nmodule.exports = VTTCue;\n","/**\n * Copyright 2013 vtt.js Contributors\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nvar scrollSetting = {\n \"\": true,\n \"up\": true\n};\n\nfunction findScrollSetting(value) {\n if (typeof value !== \"string\") {\n return false;\n }\n var scroll = scrollSetting[value.toLowerCase()];\n return scroll ? value.toLowerCase() : false;\n}\n\nfunction isValidPercentValue(value) {\n return typeof value === \"number\" && (value >= 0 && value <= 100);\n}\n\n// VTTRegion shim http://dev.w3.org/html5/webvtt/#vttregion-interface\nfunction VTTRegion() {\n var _width = 100;\n var _lines = 3;\n var _regionAnchorX = 0;\n var _regionAnchorY = 100;\n var _viewportAnchorX = 0;\n var _viewportAnchorY = 100;\n var _scroll = \"\";\n\n Object.defineProperties(this, {\n \"width\": {\n enumerable: true,\n get: function() {\n return _width;\n },\n set: function(value) {\n if (!isValidPercentValue(value)) {\n throw new Error(\"Width must be between 0 and 100.\");\n }\n _width = value;\n }\n },\n \"lines\": {\n enumerable: true,\n get: function() {\n return _lines;\n },\n set: function(value) {\n if (typeof value !== \"number\") {\n throw new TypeError(\"Lines must be set to a number.\");\n }\n _lines = value;\n }\n },\n \"regionAnchorY\": {\n enumerable: true,\n get: function() {\n return _regionAnchorY;\n },\n set: function(value) {\n if (!isValidPercentValue(value)) {\n throw new Error(\"RegionAnchorX must be between 0 and 100.\");\n }\n _regionAnchorY = value;\n }\n },\n \"regionAnchorX\": {\n enumerable: true,\n get: function() {\n return _regionAnchorX;\n },\n set: function(value) {\n if(!isValidPercentValue(value)) {\n throw new Error(\"RegionAnchorY must be between 0 and 100.\");\n }\n _regionAnchorX = value;\n }\n },\n \"viewportAnchorY\": {\n enumerable: true,\n get: function() {\n return _viewportAnchorY;\n },\n set: function(value) {\n if (!isValidPercentValue(value)) {\n throw new Error(\"ViewportAnchorY must be between 0 and 100.\");\n }\n _viewportAnchorY = value;\n }\n },\n \"viewportAnchorX\": {\n enumerable: true,\n get: function() {\n return _viewportAnchorX;\n },\n set: function(value) {\n if (!isValidPercentValue(value)) {\n throw new Error(\"ViewportAnchorX must be between 0 and 100.\");\n }\n _viewportAnchorX = value;\n }\n },\n \"scroll\": {\n enumerable: true,\n get: function() {\n return _scroll;\n },\n set: function(value) {\n var setting = findScrollSetting(value);\n // Have to check for false as an empty string is a legal value.\n if (setting === false) {\n console.warn(\"Scroll: an invalid or illegal string was specified.\");\n } else {\n _scroll = setting;\n }\n }\n }\n });\n}\n\nmodule.exports = VTTRegion;\n","/* (ignored) */","function _extends() {\n module.exports = _extends = Object.assign ? Object.assign.bind() : function (target) {\n for (var i = 1; i < arguments.length; i++) {\n var source = arguments[i];\n for (var key in source) {\n if (Object.prototype.hasOwnProperty.call(source, key)) {\n target[key] = source[key];\n }\n }\n }\n return target;\n }, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;\n return _extends.apply(this, arguments);\n}\nmodule.exports = _extends, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;","export default function _extends() {\n _extends = Object.assign ? Object.assign.bind() : function (target) {\n for (var i = 1; i < arguments.length; i++) {\n var source = arguments[i];\n for (var key in source) {\n if (Object.prototype.hasOwnProperty.call(source, key)) {\n target[key] = source[key];\n }\n }\n }\n return target;\n };\n return _extends.apply(this, arguments);\n}","/**\n * Dom7 4.0.6\n * Minimalistic JavaScript library for DOM manipulation, with a jQuery-compatible API\n * https://framework7.io/docs/dom7.html\n *\n * Copyright 2023, Vladimir Kharlampidi\n *\n * Licensed under MIT\n *\n * Released on: February 2, 2023\n */\nimport { getWindow, getDocument } from 'ssr-window';\n\n/* eslint-disable no-proto */\nfunction makeReactive(obj) {\n const proto = obj.__proto__;\n Object.defineProperty(obj, '__proto__', {\n get() {\n return proto;\n },\n\n set(value) {\n proto.__proto__ = value;\n }\n\n });\n}\n\nclass Dom7 extends Array {\n constructor(items) {\n if (typeof items === 'number') {\n super(items);\n } else {\n super(...(items || []));\n makeReactive(this);\n }\n }\n\n}\n\nfunction arrayFlat(arr = []) {\n const res = [];\n arr.forEach(el => {\n if (Array.isArray(el)) {\n res.push(...arrayFlat(el));\n } else {\n res.push(el);\n }\n });\n return res;\n}\nfunction arrayFilter(arr, callback) {\n return Array.prototype.filter.call(arr, callback);\n}\nfunction arrayUnique(arr) {\n const uniqueArray = [];\n\n for (let i = 0; i < arr.length; i += 1) {\n if (uniqueArray.indexOf(arr[i]) === -1) uniqueArray.push(arr[i]);\n }\n\n return uniqueArray;\n}\nfunction toCamelCase(string) {\n return string.toLowerCase().replace(/-(.)/g, (match, group) => group.toUpperCase());\n}\n\n// eslint-disable-next-line\n\nfunction qsa(selector, context) {\n if (typeof selector !== 'string') {\n return [selector];\n }\n\n const a = [];\n const res = context.querySelectorAll(selector);\n\n for (let i = 0; i < res.length; i += 1) {\n a.push(res[i]);\n }\n\n return a;\n}\n\nfunction $(selector, context) {\n const window = getWindow();\n const document = getDocument();\n let arr = [];\n\n if (!context && selector instanceof Dom7) {\n return selector;\n }\n\n if (!selector) {\n return new Dom7(arr);\n }\n\n if (typeof selector === 'string') {\n const html = selector.trim();\n\n if (html.indexOf('<') >= 0 && html.indexOf('>') >= 0) {\n let toCreate = 'div';\n if (html.indexOf(' c.split(' ')));\n this.forEach(el => {\n el.classList.add(...classNames);\n });\n return this;\n}\n\nfunction removeClass(...classes) {\n const classNames = arrayFlat(classes.map(c => c.split(' ')));\n this.forEach(el => {\n el.classList.remove(...classNames);\n });\n return this;\n}\n\nfunction toggleClass(...classes) {\n const classNames = arrayFlat(classes.map(c => c.split(' ')));\n this.forEach(el => {\n classNames.forEach(className => {\n el.classList.toggle(className);\n });\n });\n}\n\nfunction hasClass(...classes) {\n const classNames = arrayFlat(classes.map(c => c.split(' ')));\n return arrayFilter(this, el => {\n return classNames.filter(className => el.classList.contains(className)).length > 0;\n }).length > 0;\n}\n\nfunction attr(attrs, value) {\n if (arguments.length === 1 && typeof attrs === 'string') {\n // Get attr\n if (this[0]) return this[0].getAttribute(attrs);\n return undefined;\n } // Set attrs\n\n\n for (let i = 0; i < this.length; i += 1) {\n if (arguments.length === 2) {\n // String\n this[i].setAttribute(attrs, value);\n } else {\n // Object\n for (const attrName in attrs) {\n this[i][attrName] = attrs[attrName];\n this[i].setAttribute(attrName, attrs[attrName]);\n }\n }\n }\n\n return this;\n}\n\nfunction removeAttr(attr) {\n for (let i = 0; i < this.length; i += 1) {\n this[i].removeAttribute(attr);\n }\n\n return this;\n}\n\nfunction prop(props, value) {\n if (arguments.length === 1 && typeof props === 'string') {\n // Get prop\n if (this[0]) return this[0][props];\n } else {\n // Set props\n for (let i = 0; i < this.length; i += 1) {\n if (arguments.length === 2) {\n // String\n this[i][props] = value;\n } else {\n // Object\n for (const propName in props) {\n this[i][propName] = props[propName];\n }\n }\n }\n\n return this;\n }\n\n return this;\n}\n\nfunction data(key, value) {\n let el;\n\n if (typeof value === 'undefined') {\n el = this[0];\n if (!el) return undefined; // Get value\n\n if (el.dom7ElementDataStorage && key in el.dom7ElementDataStorage) {\n return el.dom7ElementDataStorage[key];\n }\n\n const dataKey = el.getAttribute(`data-${key}`);\n\n if (dataKey) {\n return dataKey;\n }\n\n return undefined;\n } // Set value\n\n\n for (let i = 0; i < this.length; i += 1) {\n el = this[i];\n if (!el.dom7ElementDataStorage) el.dom7ElementDataStorage = {};\n el.dom7ElementDataStorage[key] = value;\n }\n\n return this;\n}\n\nfunction removeData(key) {\n for (let i = 0; i < this.length; i += 1) {\n const el = this[i];\n\n if (el.dom7ElementDataStorage && el.dom7ElementDataStorage[key]) {\n el.dom7ElementDataStorage[key] = null;\n delete el.dom7ElementDataStorage[key];\n }\n }\n}\n\nfunction dataset() {\n const el = this[0];\n if (!el) return undefined;\n const dataset = {}; // eslint-disable-line\n\n if (el.dataset) {\n for (const dataKey in el.dataset) {\n dataset[dataKey] = el.dataset[dataKey];\n }\n } else {\n for (let i = 0; i < el.attributes.length; i += 1) {\n const attr = el.attributes[i];\n\n if (attr.name.indexOf('data-') >= 0) {\n dataset[toCamelCase(attr.name.split('data-')[1])] = attr.value;\n }\n }\n }\n\n for (const key in dataset) {\n if (dataset[key] === 'false') dataset[key] = false;else if (dataset[key] === 'true') dataset[key] = true;else if (parseFloat(dataset[key]) === dataset[key] * 1) dataset[key] *= 1;\n }\n\n return dataset;\n}\n\nfunction val(value) {\n if (typeof value === 'undefined') {\n // get value\n const el = this[0];\n if (!el) return undefined;\n\n if (el.multiple && el.nodeName.toLowerCase() === 'select') {\n const values = [];\n\n for (let i = 0; i < el.selectedOptions.length; i += 1) {\n values.push(el.selectedOptions[i].value);\n }\n\n return values;\n }\n\n return el.value;\n } // set value\n\n\n for (let i = 0; i < this.length; i += 1) {\n const el = this[i];\n\n if (Array.isArray(value) && el.multiple && el.nodeName.toLowerCase() === 'select') {\n for (let j = 0; j < el.options.length; j += 1) {\n el.options[j].selected = value.indexOf(el.options[j].value) >= 0;\n }\n } else {\n el.value = value;\n }\n }\n\n return this;\n}\n\nfunction value(value) {\n return this.val(value);\n}\n\nfunction transform(transform) {\n for (let i = 0; i < this.length; i += 1) {\n this[i].style.transform = transform;\n }\n\n return this;\n}\n\nfunction transition(duration) {\n for (let i = 0; i < this.length; i += 1) {\n this[i].style.transitionDuration = typeof duration !== 'string' ? `${duration}ms` : duration;\n }\n\n return this;\n}\n\nfunction on(...args) {\n let [eventType, targetSelector, listener, capture] = args;\n\n if (typeof args[1] === 'function') {\n [eventType, listener, capture] = args;\n targetSelector = undefined;\n }\n\n if (!capture) capture = false;\n\n function handleLiveEvent(e) {\n const target = e.target;\n if (!target) return;\n const eventData = e.target.dom7EventData || [];\n\n if (eventData.indexOf(e) < 0) {\n eventData.unshift(e);\n }\n\n if ($(target).is(targetSelector)) listener.apply(target, eventData);else {\n const parents = $(target).parents(); // eslint-disable-line\n\n for (let k = 0; k < parents.length; k += 1) {\n if ($(parents[k]).is(targetSelector)) listener.apply(parents[k], eventData);\n }\n }\n }\n\n function handleEvent(e) {\n const eventData = e && e.target ? e.target.dom7EventData || [] : [];\n\n if (eventData.indexOf(e) < 0) {\n eventData.unshift(e);\n }\n\n listener.apply(this, eventData);\n }\n\n const events = eventType.split(' ');\n let j;\n\n for (let i = 0; i < this.length; i += 1) {\n const el = this[i];\n\n if (!targetSelector) {\n for (j = 0; j < events.length; j += 1) {\n const event = events[j];\n if (!el.dom7Listeners) el.dom7Listeners = {};\n if (!el.dom7Listeners[event]) el.dom7Listeners[event] = [];\n el.dom7Listeners[event].push({\n listener,\n proxyListener: handleEvent\n });\n el.addEventListener(event, handleEvent, capture);\n }\n } else {\n // Live events\n for (j = 0; j < events.length; j += 1) {\n const event = events[j];\n if (!el.dom7LiveListeners) el.dom7LiveListeners = {};\n if (!el.dom7LiveListeners[event]) el.dom7LiveListeners[event] = [];\n el.dom7LiveListeners[event].push({\n listener,\n proxyListener: handleLiveEvent\n });\n el.addEventListener(event, handleLiveEvent, capture);\n }\n }\n }\n\n return this;\n}\n\nfunction off(...args) {\n let [eventType, targetSelector, listener, capture] = args;\n\n if (typeof args[1] === 'function') {\n [eventType, listener, capture] = args;\n targetSelector = undefined;\n }\n\n if (!capture) capture = false;\n const events = eventType.split(' ');\n\n for (let i = 0; i < events.length; i += 1) {\n const event = events[i];\n\n for (let j = 0; j < this.length; j += 1) {\n const el = this[j];\n let handlers;\n\n if (!targetSelector && el.dom7Listeners) {\n handlers = el.dom7Listeners[event];\n } else if (targetSelector && el.dom7LiveListeners) {\n handlers = el.dom7LiveListeners[event];\n }\n\n if (handlers && handlers.length) {\n for (let k = handlers.length - 1; k >= 0; k -= 1) {\n const handler = handlers[k];\n\n if (listener && handler.listener === listener) {\n el.removeEventListener(event, handler.proxyListener, capture);\n handlers.splice(k, 1);\n } else if (listener && handler.listener && handler.listener.dom7proxy && handler.listener.dom7proxy === listener) {\n el.removeEventListener(event, handler.proxyListener, capture);\n handlers.splice(k, 1);\n } else if (!listener) {\n el.removeEventListener(event, handler.proxyListener, capture);\n handlers.splice(k, 1);\n }\n }\n }\n }\n }\n\n return this;\n}\n\nfunction once(...args) {\n const dom = this;\n let [eventName, targetSelector, listener, capture] = args;\n\n if (typeof args[1] === 'function') {\n [eventName, listener, capture] = args;\n targetSelector = undefined;\n }\n\n function onceHandler(...eventArgs) {\n listener.apply(this, eventArgs);\n dom.off(eventName, targetSelector, onceHandler, capture);\n\n if (onceHandler.dom7proxy) {\n delete onceHandler.dom7proxy;\n }\n }\n\n onceHandler.dom7proxy = listener;\n return dom.on(eventName, targetSelector, onceHandler, capture);\n}\n\nfunction trigger(...args) {\n const window = getWindow();\n const events = args[0].split(' ');\n const eventData = args[1];\n\n for (let i = 0; i < events.length; i += 1) {\n const event = events[i];\n\n for (let j = 0; j < this.length; j += 1) {\n const el = this[j];\n\n if (window.CustomEvent) {\n const evt = new window.CustomEvent(event, {\n detail: eventData,\n bubbles: true,\n cancelable: true\n });\n el.dom7EventData = args.filter((data, dataIndex) => dataIndex > 0);\n el.dispatchEvent(evt);\n el.dom7EventData = [];\n delete el.dom7EventData;\n }\n }\n }\n\n return this;\n}\n\nfunction transitionStart(callback) {\n const dom = this;\n\n function fireCallBack(e) {\n if (e.target !== this) return;\n callback.call(this, e);\n dom.off('transitionstart', fireCallBack);\n }\n\n if (callback) {\n dom.on('transitionstart', fireCallBack);\n }\n\n return this;\n}\n\nfunction transitionEnd(callback) {\n const dom = this;\n\n function fireCallBack(e) {\n if (e.target !== this) return;\n callback.call(this, e);\n dom.off('transitionend', fireCallBack);\n }\n\n if (callback) {\n dom.on('transitionend', fireCallBack);\n }\n\n return this;\n}\n\nfunction animationEnd(callback) {\n const dom = this;\n\n function fireCallBack(e) {\n if (e.target !== this) return;\n callback.call(this, e);\n dom.off('animationend', fireCallBack);\n }\n\n if (callback) {\n dom.on('animationend', fireCallBack);\n }\n\n return this;\n}\n\nfunction width() {\n const window = getWindow();\n\n if (this[0] === window) {\n return window.innerWidth;\n }\n\n if (this.length > 0) {\n return parseFloat(this.css('width'));\n }\n\n return null;\n}\n\nfunction outerWidth(includeMargins) {\n if (this.length > 0) {\n if (includeMargins) {\n const styles = this.styles();\n return this[0].offsetWidth + parseFloat(styles.getPropertyValue('margin-right')) + parseFloat(styles.getPropertyValue('margin-left'));\n }\n\n return this[0].offsetWidth;\n }\n\n return null;\n}\n\nfunction height() {\n const window = getWindow();\n\n if (this[0] === window) {\n return window.innerHeight;\n }\n\n if (this.length > 0) {\n return parseFloat(this.css('height'));\n }\n\n return null;\n}\n\nfunction outerHeight(includeMargins) {\n if (this.length > 0) {\n if (includeMargins) {\n const styles = this.styles();\n return this[0].offsetHeight + parseFloat(styles.getPropertyValue('margin-top')) + parseFloat(styles.getPropertyValue('margin-bottom'));\n }\n\n return this[0].offsetHeight;\n }\n\n return null;\n}\n\nfunction offset() {\n if (this.length > 0) {\n const window = getWindow();\n const document = getDocument();\n const el = this[0];\n const box = el.getBoundingClientRect();\n const body = document.body;\n const clientTop = el.clientTop || body.clientTop || 0;\n const clientLeft = el.clientLeft || body.clientLeft || 0;\n const scrollTop = el === window ? window.scrollY : el.scrollTop;\n const scrollLeft = el === window ? window.scrollX : el.scrollLeft;\n return {\n top: box.top + scrollTop - clientTop,\n left: box.left + scrollLeft - clientLeft\n };\n }\n\n return null;\n}\n\nfunction hide() {\n for (let i = 0; i < this.length; i += 1) {\n this[i].style.display = 'none';\n }\n\n return this;\n}\n\nfunction show() {\n const window = getWindow();\n\n for (let i = 0; i < this.length; i += 1) {\n const el = this[i];\n\n if (el.style.display === 'none') {\n el.style.display = '';\n }\n\n if (window.getComputedStyle(el, null).getPropertyValue('display') === 'none') {\n // Still not visible\n el.style.display = 'block';\n }\n }\n\n return this;\n}\n\nfunction styles() {\n const window = getWindow();\n if (this[0]) return window.getComputedStyle(this[0], null);\n return {};\n}\n\nfunction css(props, value) {\n const window = getWindow();\n let i;\n\n if (arguments.length === 1) {\n if (typeof props === 'string') {\n // .css('width')\n if (this[0]) return window.getComputedStyle(this[0], null).getPropertyValue(props);\n } else {\n // .css({ width: '100px' })\n for (i = 0; i < this.length; i += 1) {\n for (const prop in props) {\n this[i].style[prop] = props[prop];\n }\n }\n\n return this;\n }\n }\n\n if (arguments.length === 2 && typeof props === 'string') {\n // .css('width', '100px')\n for (i = 0; i < this.length; i += 1) {\n this[i].style[props] = value;\n }\n\n return this;\n }\n\n return this;\n}\n\nfunction each(callback) {\n if (!callback) return this;\n this.forEach((el, index) => {\n callback.apply(el, [el, index]);\n });\n return this;\n}\n\nfunction filter(callback) {\n const result = arrayFilter(this, callback);\n return $(result);\n}\n\nfunction html(html) {\n if (typeof html === 'undefined') {\n return this[0] ? this[0].innerHTML : null;\n }\n\n for (let i = 0; i < this.length; i += 1) {\n this[i].innerHTML = html;\n }\n\n return this;\n}\n\nfunction text(text) {\n if (typeof text === 'undefined') {\n return this[0] ? this[0].textContent.trim() : null;\n }\n\n for (let i = 0; i < this.length; i += 1) {\n this[i].textContent = text;\n }\n\n return this;\n}\n\nfunction is(selector) {\n const window = getWindow();\n const document = getDocument();\n const el = this[0];\n let compareWith;\n let i;\n if (!el || typeof selector === 'undefined') return false;\n\n if (typeof selector === 'string') {\n if (el.matches) return el.matches(selector);\n if (el.webkitMatchesSelector) return el.webkitMatchesSelector(selector);\n if (el.msMatchesSelector) return el.msMatchesSelector(selector);\n compareWith = $(selector);\n\n for (i = 0; i < compareWith.length; i += 1) {\n if (compareWith[i] === el) return true;\n }\n\n return false;\n }\n\n if (selector === document) {\n return el === document;\n }\n\n if (selector === window) {\n return el === window;\n }\n\n if (selector.nodeType || selector instanceof Dom7) {\n compareWith = selector.nodeType ? [selector] : selector;\n\n for (i = 0; i < compareWith.length; i += 1) {\n if (compareWith[i] === el) return true;\n }\n\n return false;\n }\n\n return false;\n}\n\nfunction index() {\n let child = this[0];\n let i;\n\n if (child) {\n i = 0; // eslint-disable-next-line\n\n while ((child = child.previousSibling) !== null) {\n if (child.nodeType === 1) i += 1;\n }\n\n return i;\n }\n\n return undefined;\n}\n\nfunction eq(index) {\n if (typeof index === 'undefined') return this;\n const length = this.length;\n\n if (index > length - 1) {\n return $([]);\n }\n\n if (index < 0) {\n const returnIndex = length + index;\n if (returnIndex < 0) return $([]);\n return $([this[returnIndex]]);\n }\n\n return $([this[index]]);\n}\n\nfunction append(...els) {\n let newChild;\n const document = getDocument();\n\n for (let k = 0; k < els.length; k += 1) {\n newChild = els[k];\n\n for (let i = 0; i < this.length; i += 1) {\n if (typeof newChild === 'string') {\n const tempDiv = document.createElement('div');\n tempDiv.innerHTML = newChild;\n\n while (tempDiv.firstChild) {\n this[i].appendChild(tempDiv.firstChild);\n }\n } else if (newChild instanceof Dom7) {\n for (let j = 0; j < newChild.length; j += 1) {\n this[i].appendChild(newChild[j]);\n }\n } else {\n this[i].appendChild(newChild);\n }\n }\n }\n\n return this;\n}\n\nfunction appendTo(parent) {\n $(parent).append(this);\n return this;\n}\n\nfunction prepend(newChild) {\n const document = getDocument();\n let i;\n let j;\n\n for (i = 0; i < this.length; i += 1) {\n if (typeof newChild === 'string') {\n const tempDiv = document.createElement('div');\n tempDiv.innerHTML = newChild;\n\n for (j = tempDiv.childNodes.length - 1; j >= 0; j -= 1) {\n this[i].insertBefore(tempDiv.childNodes[j], this[i].childNodes[0]);\n }\n } else if (newChild instanceof Dom7) {\n for (j = 0; j < newChild.length; j += 1) {\n this[i].insertBefore(newChild[j], this[i].childNodes[0]);\n }\n } else {\n this[i].insertBefore(newChild, this[i].childNodes[0]);\n }\n }\n\n return this;\n}\n\nfunction prependTo(parent) {\n $(parent).prepend(this);\n return this;\n}\n\nfunction insertBefore(selector) {\n const before = $(selector);\n\n for (let i = 0; i < this.length; i += 1) {\n if (before.length === 1) {\n before[0].parentNode.insertBefore(this[i], before[0]);\n } else if (before.length > 1) {\n for (let j = 0; j < before.length; j += 1) {\n before[j].parentNode.insertBefore(this[i].cloneNode(true), before[j]);\n }\n }\n }\n}\n\nfunction insertAfter(selector) {\n const after = $(selector);\n\n for (let i = 0; i < this.length; i += 1) {\n if (after.length === 1) {\n after[0].parentNode.insertBefore(this[i], after[0].nextSibling);\n } else if (after.length > 1) {\n for (let j = 0; j < after.length; j += 1) {\n after[j].parentNode.insertBefore(this[i].cloneNode(true), after[j].nextSibling);\n }\n }\n }\n}\n\nfunction next(selector) {\n if (this.length > 0) {\n if (selector) {\n if (this[0].nextElementSibling && $(this[0].nextElementSibling).is(selector)) {\n return $([this[0].nextElementSibling]);\n }\n\n return $([]);\n }\n\n if (this[0].nextElementSibling) return $([this[0].nextElementSibling]);\n return $([]);\n }\n\n return $([]);\n}\n\nfunction nextAll(selector) {\n const nextEls = [];\n let el = this[0];\n if (!el) return $([]);\n\n while (el.nextElementSibling) {\n const next = el.nextElementSibling; // eslint-disable-line\n\n if (selector) {\n if ($(next).is(selector)) nextEls.push(next);\n } else nextEls.push(next);\n\n el = next;\n }\n\n return $(nextEls);\n}\n\nfunction prev(selector) {\n if (this.length > 0) {\n const el = this[0];\n\n if (selector) {\n if (el.previousElementSibling && $(el.previousElementSibling).is(selector)) {\n return $([el.previousElementSibling]);\n }\n\n return $([]);\n }\n\n if (el.previousElementSibling) return $([el.previousElementSibling]);\n return $([]);\n }\n\n return $([]);\n}\n\nfunction prevAll(selector) {\n const prevEls = [];\n let el = this[0];\n if (!el) return $([]);\n\n while (el.previousElementSibling) {\n const prev = el.previousElementSibling; // eslint-disable-line\n\n if (selector) {\n if ($(prev).is(selector)) prevEls.push(prev);\n } else prevEls.push(prev);\n\n el = prev;\n }\n\n return $(prevEls);\n}\n\nfunction siblings(selector) {\n return this.nextAll(selector).add(this.prevAll(selector));\n}\n\nfunction parent(selector) {\n const parents = []; // eslint-disable-line\n\n for (let i = 0; i < this.length; i += 1) {\n if (this[i].parentNode !== null) {\n if (selector) {\n if ($(this[i].parentNode).is(selector)) parents.push(this[i].parentNode);\n } else {\n parents.push(this[i].parentNode);\n }\n }\n }\n\n return $(parents);\n}\n\nfunction parents(selector) {\n const parents = []; // eslint-disable-line\n\n for (let i = 0; i < this.length; i += 1) {\n let parent = this[i].parentNode; // eslint-disable-line\n\n while (parent) {\n if (selector) {\n if ($(parent).is(selector)) parents.push(parent);\n } else {\n parents.push(parent);\n }\n\n parent = parent.parentNode;\n }\n }\n\n return $(parents);\n}\n\nfunction closest(selector) {\n let closest = this; // eslint-disable-line\n\n if (typeof selector === 'undefined') {\n return $([]);\n }\n\n if (!closest.is(selector)) {\n closest = closest.parents(selector).eq(0);\n }\n\n return closest;\n}\n\nfunction find(selector) {\n const foundElements = [];\n\n for (let i = 0; i < this.length; i += 1) {\n const found = this[i].querySelectorAll(selector);\n\n for (let j = 0; j < found.length; j += 1) {\n foundElements.push(found[j]);\n }\n }\n\n return $(foundElements);\n}\n\nfunction children(selector) {\n const children = []; // eslint-disable-line\n\n for (let i = 0; i < this.length; i += 1) {\n const childNodes = this[i].children;\n\n for (let j = 0; j < childNodes.length; j += 1) {\n if (!selector || $(childNodes[j]).is(selector)) {\n children.push(childNodes[j]);\n }\n }\n }\n\n return $(children);\n}\n\nfunction remove() {\n for (let i = 0; i < this.length; i += 1) {\n if (this[i].parentNode) this[i].parentNode.removeChild(this[i]);\n }\n\n return this;\n}\n\nfunction detach() {\n return this.remove();\n}\n\nfunction add(...els) {\n const dom = this;\n let i;\n let j;\n\n for (i = 0; i < els.length; i += 1) {\n const toAdd = $(els[i]);\n\n for (j = 0; j < toAdd.length; j += 1) {\n dom.push(toAdd[j]);\n }\n }\n\n return dom;\n}\n\nfunction empty() {\n for (let i = 0; i < this.length; i += 1) {\n const el = this[i];\n\n if (el.nodeType === 1) {\n for (let j = 0; j < el.childNodes.length; j += 1) {\n if (el.childNodes[j].parentNode) {\n el.childNodes[j].parentNode.removeChild(el.childNodes[j]);\n }\n }\n\n el.textContent = '';\n }\n }\n\n return this;\n}\n\n// eslint-disable-next-line\n\nfunction scrollTo(...args) {\n const window = getWindow();\n let [left, top, duration, easing, callback] = args;\n\n if (args.length === 4 && typeof easing === 'function') {\n callback = easing;\n [left, top, duration, callback, easing] = args;\n }\n\n if (typeof easing === 'undefined') easing = 'swing';\n return this.each(function animate() {\n const el = this;\n let currentTop;\n let currentLeft;\n let maxTop;\n let maxLeft;\n let newTop;\n let newLeft;\n let scrollTop; // eslint-disable-line\n\n let scrollLeft; // eslint-disable-line\n\n let animateTop = top > 0 || top === 0;\n let animateLeft = left > 0 || left === 0;\n\n if (typeof easing === 'undefined') {\n easing = 'swing';\n }\n\n if (animateTop) {\n currentTop = el.scrollTop;\n\n if (!duration) {\n el.scrollTop = top;\n }\n }\n\n if (animateLeft) {\n currentLeft = el.scrollLeft;\n\n if (!duration) {\n el.scrollLeft = left;\n }\n }\n\n if (!duration) return;\n\n if (animateTop) {\n maxTop = el.scrollHeight - el.offsetHeight;\n newTop = Math.max(Math.min(top, maxTop), 0);\n }\n\n if (animateLeft) {\n maxLeft = el.scrollWidth - el.offsetWidth;\n newLeft = Math.max(Math.min(left, maxLeft), 0);\n }\n\n let startTime = null;\n if (animateTop && newTop === currentTop) animateTop = false;\n if (animateLeft && newLeft === currentLeft) animateLeft = false;\n\n function render(time = new Date().getTime()) {\n if (startTime === null) {\n startTime = time;\n }\n\n const progress = Math.max(Math.min((time - startTime) / duration, 1), 0);\n const easeProgress = easing === 'linear' ? progress : 0.5 - Math.cos(progress * Math.PI) / 2;\n let done;\n if (animateTop) scrollTop = currentTop + easeProgress * (newTop - currentTop);\n if (animateLeft) scrollLeft = currentLeft + easeProgress * (newLeft - currentLeft);\n\n if (animateTop && newTop > currentTop && scrollTop >= newTop) {\n el.scrollTop = newTop;\n done = true;\n }\n\n if (animateTop && newTop < currentTop && scrollTop <= newTop) {\n el.scrollTop = newTop;\n done = true;\n }\n\n if (animateLeft && newLeft > currentLeft && scrollLeft >= newLeft) {\n el.scrollLeft = newLeft;\n done = true;\n }\n\n if (animateLeft && newLeft < currentLeft && scrollLeft <= newLeft) {\n el.scrollLeft = newLeft;\n done = true;\n }\n\n if (done) {\n if (callback) callback();\n return;\n }\n\n if (animateTop) el.scrollTop = scrollTop;\n if (animateLeft) el.scrollLeft = scrollLeft;\n window.requestAnimationFrame(render);\n }\n\n window.requestAnimationFrame(render);\n });\n} // scrollTop(top, duration, easing, callback) {\n\n\nfunction scrollTop(...args) {\n let [top, duration, easing, callback] = args;\n\n if (args.length === 3 && typeof easing === 'function') {\n [top, duration, callback, easing] = args;\n }\n\n const dom = this;\n\n if (typeof top === 'undefined') {\n if (dom.length > 0) return dom[0].scrollTop;\n return null;\n }\n\n return dom.scrollTo(undefined, top, duration, easing, callback);\n}\n\nfunction scrollLeft(...args) {\n let [left, duration, easing, callback] = args;\n\n if (args.length === 3 && typeof easing === 'function') {\n [left, duration, callback, easing] = args;\n }\n\n const dom = this;\n\n if (typeof left === 'undefined') {\n if (dom.length > 0) return dom[0].scrollLeft;\n return null;\n }\n\n return dom.scrollTo(left, undefined, duration, easing, callback);\n}\n\n// eslint-disable-next-line\n\nfunction animate(initialProps, initialParams) {\n const window = getWindow();\n const els = this;\n const a = {\n props: Object.assign({}, initialProps),\n params: Object.assign({\n duration: 300,\n easing: 'swing' // or 'linear'\n\n /* Callbacks\n begin(elements)\n complete(elements)\n progress(elements, complete, remaining, start, tweenValue)\n */\n\n }, initialParams),\n elements: els,\n animating: false,\n que: [],\n\n easingProgress(easing, progress) {\n if (easing === 'swing') {\n return 0.5 - Math.cos(progress * Math.PI) / 2;\n }\n\n if (typeof easing === 'function') {\n return easing(progress);\n }\n\n return progress;\n },\n\n stop() {\n if (a.frameId) {\n window.cancelAnimationFrame(a.frameId);\n }\n\n a.animating = false;\n a.elements.each(el => {\n const element = el;\n delete element.dom7AnimateInstance;\n });\n a.que = [];\n },\n\n done(complete) {\n a.animating = false;\n a.elements.each(el => {\n const element = el;\n delete element.dom7AnimateInstance;\n });\n if (complete) complete(els);\n\n if (a.que.length > 0) {\n const que = a.que.shift();\n a.animate(que[0], que[1]);\n }\n },\n\n animate(props, params) {\n if (a.animating) {\n a.que.push([props, params]);\n return a;\n }\n\n const elements = []; // Define & Cache Initials & Units\n\n a.elements.each((el, index) => {\n let initialFullValue;\n let initialValue;\n let unit;\n let finalValue;\n let finalFullValue;\n if (!el.dom7AnimateInstance) a.elements[index].dom7AnimateInstance = a;\n elements[index] = {\n container: el\n };\n Object.keys(props).forEach(prop => {\n initialFullValue = window.getComputedStyle(el, null).getPropertyValue(prop).replace(',', '.');\n initialValue = parseFloat(initialFullValue);\n unit = initialFullValue.replace(initialValue, '');\n finalValue = parseFloat(props[prop]);\n finalFullValue = props[prop] + unit;\n elements[index][prop] = {\n initialFullValue,\n initialValue,\n unit,\n finalValue,\n finalFullValue,\n currentValue: initialValue\n };\n });\n });\n let startTime = null;\n let time;\n let elementsDone = 0;\n let propsDone = 0;\n let done;\n let began = false;\n a.animating = true;\n\n function render() {\n time = new Date().getTime();\n let progress;\n let easeProgress; // let el;\n\n if (!began) {\n began = true;\n if (params.begin) params.begin(els);\n }\n\n if (startTime === null) {\n startTime = time;\n }\n\n if (params.progress) {\n // eslint-disable-next-line\n params.progress(els, Math.max(Math.min((time - startTime) / params.duration, 1), 0), startTime + params.duration - time < 0 ? 0 : startTime + params.duration - time, startTime);\n }\n\n elements.forEach(element => {\n const el = element;\n if (done || el.done) return;\n Object.keys(props).forEach(prop => {\n if (done || el.done) return;\n progress = Math.max(Math.min((time - startTime) / params.duration, 1), 0);\n easeProgress = a.easingProgress(params.easing, progress);\n const {\n initialValue,\n finalValue,\n unit\n } = el[prop];\n el[prop].currentValue = initialValue + easeProgress * (finalValue - initialValue);\n const currentValue = el[prop].currentValue;\n\n if (finalValue > initialValue && currentValue >= finalValue || finalValue < initialValue && currentValue <= finalValue) {\n el.container.style[prop] = finalValue + unit;\n propsDone += 1;\n\n if (propsDone === Object.keys(props).length) {\n el.done = true;\n elementsDone += 1;\n }\n\n if (elementsDone === elements.length) {\n done = true;\n }\n }\n\n if (done) {\n a.done(params.complete);\n return;\n }\n\n el.container.style[prop] = currentValue + unit;\n });\n });\n if (done) return; // Then call\n\n a.frameId = window.requestAnimationFrame(render);\n }\n\n a.frameId = window.requestAnimationFrame(render);\n return a;\n }\n\n };\n\n if (a.elements.length === 0) {\n return els;\n }\n\n let animateInstance;\n\n for (let i = 0; i < a.elements.length; i += 1) {\n if (a.elements[i].dom7AnimateInstance) {\n animateInstance = a.elements[i].dom7AnimateInstance;\n } else a.elements[i].dom7AnimateInstance = a;\n }\n\n if (!animateInstance) {\n animateInstance = a;\n }\n\n if (initialProps === 'stop') {\n animateInstance.stop();\n } else {\n animateInstance.animate(a.props, a.params);\n }\n\n return els;\n}\n\nfunction stop() {\n const els = this;\n\n for (let i = 0; i < els.length; i += 1) {\n if (els[i].dom7AnimateInstance) {\n els[i].dom7AnimateInstance.stop();\n }\n }\n}\n\nconst noTrigger = 'resize scroll'.split(' ');\n\nfunction shortcut(name) {\n function eventHandler(...args) {\n if (typeof args[0] === 'undefined') {\n for (let i = 0; i < this.length; i += 1) {\n if (noTrigger.indexOf(name) < 0) {\n if (name in this[i]) this[i][name]();else {\n $(this[i]).trigger(name);\n }\n }\n }\n\n return this;\n }\n\n return this.on(name, ...args);\n }\n\n return eventHandler;\n}\n\nconst click = shortcut('click');\nconst blur = shortcut('blur');\nconst focus = shortcut('focus');\nconst focusin = shortcut('focusin');\nconst focusout = shortcut('focusout');\nconst keyup = shortcut('keyup');\nconst keydown = shortcut('keydown');\nconst keypress = shortcut('keypress');\nconst submit = shortcut('submit');\nconst change = shortcut('change');\nconst mousedown = shortcut('mousedown');\nconst mousemove = shortcut('mousemove');\nconst mouseup = shortcut('mouseup');\nconst mouseenter = shortcut('mouseenter');\nconst mouseleave = shortcut('mouseleave');\nconst mouseout = shortcut('mouseout');\nconst mouseover = shortcut('mouseover');\nconst touchstart = shortcut('touchstart');\nconst touchend = shortcut('touchend');\nconst touchmove = shortcut('touchmove');\nconst resize = shortcut('resize');\nconst scroll = shortcut('scroll');\n\nexport default $;\nexport { $, add, addClass, animate, animationEnd, append, appendTo, attr, blur, change, children, click, closest, css, data, dataset, detach, each, empty, eq, filter, find, focus, focusin, focusout, hasClass, height, hide, html, index, insertAfter, insertBefore, is, keydown, keypress, keyup, mousedown, mouseenter, mouseleave, mousemove, mouseout, mouseover, mouseup, next, nextAll, off, offset, on, once, outerHeight, outerWidth, parent, parents, prepend, prependTo, prev, prevAll, prop, remove, removeAttr, removeClass, removeData, resize, scroll, scrollLeft, scrollTo, scrollTop, show, siblings, stop, styles, submit, text, toggleClass, touchend, touchmove, touchstart, transform, transition, transitionEnd, transitionStart, trigger, val, value, width };\n","/**\n * SSR Window 4.0.2\n * Better handling for window object in SSR environment\n * https://github.com/nolimits4web/ssr-window\n *\n * Copyright 2021, Vladimir Kharlampidi\n *\n * Licensed under MIT\n *\n * Released on: December 13, 2021\n */\n/* eslint-disable no-param-reassign */\nfunction isObject(obj) {\n return (obj !== null &&\n typeof obj === 'object' &&\n 'constructor' in obj &&\n obj.constructor === Object);\n}\nfunction extend(target = {}, src = {}) {\n Object.keys(src).forEach((key) => {\n if (typeof target[key] === 'undefined')\n target[key] = src[key];\n else if (isObject(src[key]) &&\n isObject(target[key]) &&\n Object.keys(src[key]).length > 0) {\n extend(target[key], src[key]);\n }\n });\n}\n\nconst ssrDocument = {\n body: {},\n addEventListener() { },\n removeEventListener() { },\n activeElement: {\n blur() { },\n nodeName: '',\n },\n querySelector() {\n return null;\n },\n querySelectorAll() {\n return [];\n },\n getElementById() {\n return null;\n },\n createEvent() {\n return {\n initEvent() { },\n };\n },\n createElement() {\n return {\n children: [],\n childNodes: [],\n style: {},\n setAttribute() { },\n getElementsByTagName() {\n return [];\n },\n };\n },\n createElementNS() {\n return {};\n },\n importNode() {\n return null;\n },\n location: {\n hash: '',\n host: '',\n hostname: '',\n href: '',\n origin: '',\n pathname: '',\n protocol: '',\n search: '',\n },\n};\nfunction getDocument() {\n const doc = typeof document !== 'undefined' ? document : {};\n extend(doc, ssrDocument);\n return doc;\n}\n\nconst ssrWindow = {\n document: ssrDocument,\n navigator: {\n userAgent: '',\n },\n location: {\n hash: '',\n host: '',\n hostname: '',\n href: '',\n origin: '',\n pathname: '',\n protocol: '',\n search: '',\n },\n history: {\n replaceState() { },\n pushState() { },\n go() { },\n back() { },\n },\n CustomEvent: function CustomEvent() {\n return this;\n },\n addEventListener() { },\n removeEventListener() { },\n getComputedStyle() {\n return {\n getPropertyValue() {\n return '';\n },\n };\n },\n Image() { },\n Date() { },\n screen: {},\n setTimeout() { },\n clearTimeout() { },\n matchMedia() {\n return {};\n },\n requestAnimationFrame(callback) {\n if (typeof setTimeout === 'undefined') {\n callback();\n return null;\n }\n return setTimeout(callback, 0);\n },\n cancelAnimationFrame(id) {\n if (typeof setTimeout === 'undefined') {\n return;\n }\n clearTimeout(id);\n },\n};\nfunction getWindow() {\n const win = typeof window !== 'undefined' ? window : {};\n extend(win, ssrWindow);\n return win;\n}\n\nexport { extend, getDocument, getWindow, ssrDocument, ssrWindow };\n","import { getWindow } from 'ssr-window';\nexport default function getBreakpoint(breakpoints, base = 'window', containerEl) {\n if (!breakpoints || base === 'container' && !containerEl) return undefined;\n let breakpoint = false;\n const window = getWindow();\n const currentHeight = base === 'window' ? window.innerHeight : containerEl.clientHeight;\n const points = Object.keys(breakpoints).map(point => {\n if (typeof point === 'string' && point.indexOf('@') === 0) {\n const minRatio = parseFloat(point.substr(1));\n const value = currentHeight * minRatio;\n return {\n value,\n point\n };\n }\n\n return {\n value: point,\n point\n };\n });\n points.sort((a, b) => parseInt(a.value, 10) - parseInt(b.value, 10));\n\n for (let i = 0; i < points.length; i += 1) {\n const {\n point,\n value\n } = points[i];\n\n if (base === 'window') {\n if (window.matchMedia(`(min-width: ${value}px)`).matches) {\n breakpoint = point;\n }\n } else if (value <= containerEl.clientWidth) {\n breakpoint = point;\n }\n }\n\n return breakpoint || 'max';\n}","import setBreakpoint from './setBreakpoint.js';\nimport getBreakpoint from './getBreakpoint.js';\nexport default {\n setBreakpoint,\n getBreakpoint\n};","import { extend } from '../../shared/utils.js';\n\nconst isGridEnabled = (swiper, params) => {\n return swiper.grid && params.grid && params.grid.rows > 1;\n};\n\nexport default function setBreakpoint() {\n const swiper = this;\n const {\n activeIndex,\n initialized,\n loopedSlides = 0,\n params,\n $el\n } = swiper;\n const breakpoints = params.breakpoints;\n if (!breakpoints || breakpoints && Object.keys(breakpoints).length === 0) return; // Get breakpoint for window width and update parameters\n\n const breakpoint = swiper.getBreakpoint(breakpoints, swiper.params.breakpointsBase, swiper.el);\n if (!breakpoint || swiper.currentBreakpoint === breakpoint) return;\n const breakpointOnlyParams = breakpoint in breakpoints ? breakpoints[breakpoint] : undefined;\n const breakpointParams = breakpointOnlyParams || swiper.originalParams;\n const wasMultiRow = isGridEnabled(swiper, params);\n const isMultiRow = isGridEnabled(swiper, breakpointParams);\n const wasEnabled = params.enabled;\n\n if (wasMultiRow && !isMultiRow) {\n $el.removeClass(`${params.containerModifierClass}grid ${params.containerModifierClass}grid-column`);\n swiper.emitContainerClasses();\n } else if (!wasMultiRow && isMultiRow) {\n $el.addClass(`${params.containerModifierClass}grid`);\n\n if (breakpointParams.grid.fill && breakpointParams.grid.fill === 'column' || !breakpointParams.grid.fill && params.grid.fill === 'column') {\n $el.addClass(`${params.containerModifierClass}grid-column`);\n }\n\n swiper.emitContainerClasses();\n }\n\n const directionChanged = breakpointParams.direction && breakpointParams.direction !== params.direction;\n const needsReLoop = params.loop && (breakpointParams.slidesPerView !== params.slidesPerView || directionChanged);\n\n if (directionChanged && initialized) {\n swiper.changeDirection();\n }\n\n extend(swiper.params, breakpointParams);\n const isEnabled = swiper.params.enabled;\n Object.assign(swiper, {\n allowTouchMove: swiper.params.allowTouchMove,\n allowSlideNext: swiper.params.allowSlideNext,\n allowSlidePrev: swiper.params.allowSlidePrev\n });\n\n if (wasEnabled && !isEnabled) {\n swiper.disable();\n } else if (!wasEnabled && isEnabled) {\n swiper.enable();\n }\n\n swiper.currentBreakpoint = breakpoint;\n swiper.emit('_beforeBreakpoint', breakpointParams);\n\n if (needsReLoop && initialized) {\n swiper.loopDestroy();\n swiper.loopCreate();\n swiper.updateSlides();\n swiper.slideTo(activeIndex - loopedSlides + swiper.loopedSlides, 0, false);\n }\n\n swiper.emit('breakpoint', breakpointParams);\n}","function checkOverflow() {\n const swiper = this;\n const {\n isLocked: wasLocked,\n params\n } = swiper;\n const {\n slidesOffsetBefore\n } = params;\n\n if (slidesOffsetBefore) {\n const lastSlideIndex = swiper.slides.length - 1;\n const lastSlideRightEdge = swiper.slidesGrid[lastSlideIndex] + swiper.slidesSizesGrid[lastSlideIndex] + slidesOffsetBefore * 2;\n swiper.isLocked = swiper.size > lastSlideRightEdge;\n } else {\n swiper.isLocked = swiper.snapGrid.length === 1;\n }\n\n if (params.allowSlideNext === true) {\n swiper.allowSlideNext = !swiper.isLocked;\n }\n\n if (params.allowSlidePrev === true) {\n swiper.allowSlidePrev = !swiper.isLocked;\n }\n\n if (wasLocked && wasLocked !== swiper.isLocked) {\n swiper.isEnd = false;\n }\n\n if (wasLocked !== swiper.isLocked) {\n swiper.emit(swiper.isLocked ? 'lock' : 'unlock');\n }\n}\n\nexport default {\n checkOverflow\n};","function prepareClasses(entries, prefix) {\n const resultClasses = [];\n entries.forEach(item => {\n if (typeof item === 'object') {\n Object.keys(item).forEach(classNames => {\n if (item[classNames]) {\n resultClasses.push(prefix + classNames);\n }\n });\n } else if (typeof item === 'string') {\n resultClasses.push(prefix + item);\n }\n });\n return resultClasses;\n}\n\nexport default function addClasses() {\n const swiper = this;\n const {\n classNames,\n params,\n rtl,\n $el,\n device,\n support\n } = swiper; // prettier-ignore\n\n const suffixes = prepareClasses(['initialized', params.direction, {\n 'pointer-events': !support.touch\n }, {\n 'free-mode': swiper.params.freeMode && params.freeMode.enabled\n }, {\n 'autoheight': params.autoHeight\n }, {\n 'rtl': rtl\n }, {\n 'grid': params.grid && params.grid.rows > 1\n }, {\n 'grid-column': params.grid && params.grid.rows > 1 && params.grid.fill === 'column'\n }, {\n 'android': device.android\n }, {\n 'ios': device.ios\n }, {\n 'css-mode': params.cssMode\n }, {\n 'centered': params.cssMode && params.centeredSlides\n }], params.containerModifierClass);\n classNames.push(...suffixes);\n $el.addClass([...classNames].join(' '));\n swiper.emitContainerClasses();\n}","import addClasses from './addClasses.js';\nimport removeClasses from './removeClasses.js';\nexport default {\n addClasses,\n removeClasses\n};","export default function removeClasses() {\n const swiper = this;\n const {\n $el,\n classNames\n } = swiper;\n $el.removeClass(classNames.join(' '));\n swiper.emitContainerClasses();\n}","/* eslint no-param-reassign: \"off\" */\nimport { getDocument } from 'ssr-window';\nimport $ from '../shared/dom.js';\nimport { extend, now, deleteProps } from '../shared/utils.js';\nimport { getSupport } from '../shared/get-support.js';\nimport { getDevice } from '../shared/get-device.js';\nimport { getBrowser } from '../shared/get-browser.js';\nimport Resize from './modules/resize/resize.js';\nimport Observer from './modules/observer/observer.js';\nimport eventsEmitter from './events-emitter.js';\nimport update from './update/index.js';\nimport translate from './translate/index.js';\nimport transition from './transition/index.js';\nimport slide from './slide/index.js';\nimport loop from './loop/index.js';\nimport grabCursor from './grab-cursor/index.js';\nimport events from './events/index.js';\nimport breakpoints from './breakpoints/index.js';\nimport classes from './classes/index.js';\nimport images from './images/index.js';\nimport checkOverflow from './check-overflow/index.js';\nimport defaults from './defaults.js';\nimport moduleExtendParams from './moduleExtendParams.js';\nconst prototypes = {\n eventsEmitter,\n update,\n translate,\n transition,\n slide,\n loop,\n grabCursor,\n events,\n breakpoints,\n checkOverflow,\n classes,\n images\n};\nconst extendedDefaults = {};\n\nclass Swiper {\n constructor(...args) {\n let el;\n let params;\n\n if (args.length === 1 && args[0].constructor && Object.prototype.toString.call(args[0]).slice(8, -1) === 'Object') {\n params = args[0];\n } else {\n [el, params] = args;\n }\n\n if (!params) params = {};\n params = extend({}, params);\n if (el && !params.el) params.el = el;\n\n if (params.el && $(params.el).length > 1) {\n const swipers = [];\n $(params.el).each(containerEl => {\n const newParams = extend({}, params, {\n el: containerEl\n });\n swipers.push(new Swiper(newParams));\n });\n return swipers;\n } // Swiper Instance\n\n\n const swiper = this;\n swiper.__swiper__ = true;\n swiper.support = getSupport();\n swiper.device = getDevice({\n userAgent: params.userAgent\n });\n swiper.browser = getBrowser();\n swiper.eventsListeners = {};\n swiper.eventsAnyListeners = [];\n swiper.modules = [...swiper.__modules__];\n\n if (params.modules && Array.isArray(params.modules)) {\n swiper.modules.push(...params.modules);\n }\n\n const allModulesParams = {};\n swiper.modules.forEach(mod => {\n mod({\n swiper,\n extendParams: moduleExtendParams(params, allModulesParams),\n on: swiper.on.bind(swiper),\n once: swiper.once.bind(swiper),\n off: swiper.off.bind(swiper),\n emit: swiper.emit.bind(swiper)\n });\n }); // Extend defaults with modules params\n\n const swiperParams = extend({}, defaults, allModulesParams); // Extend defaults with passed params\n\n swiper.params = extend({}, swiperParams, extendedDefaults, params);\n swiper.originalParams = extend({}, swiper.params);\n swiper.passedParams = extend({}, params); // add event listeners\n\n if (swiper.params && swiper.params.on) {\n Object.keys(swiper.params.on).forEach(eventName => {\n swiper.on(eventName, swiper.params.on[eventName]);\n });\n }\n\n if (swiper.params && swiper.params.onAny) {\n swiper.onAny(swiper.params.onAny);\n } // Save Dom lib\n\n\n swiper.$ = $; // Extend Swiper\n\n Object.assign(swiper, {\n enabled: swiper.params.enabled,\n el,\n // Classes\n classNames: [],\n // Slides\n slides: $(),\n slidesGrid: [],\n snapGrid: [],\n slidesSizesGrid: [],\n\n // isDirection\n isHorizontal() {\n return swiper.params.direction === 'horizontal';\n },\n\n isVertical() {\n return swiper.params.direction === 'vertical';\n },\n\n // Indexes\n activeIndex: 0,\n realIndex: 0,\n //\n isBeginning: true,\n isEnd: false,\n // Props\n translate: 0,\n previousTranslate: 0,\n progress: 0,\n velocity: 0,\n animating: false,\n // Locks\n allowSlideNext: swiper.params.allowSlideNext,\n allowSlidePrev: swiper.params.allowSlidePrev,\n // Touch Events\n touchEvents: function touchEvents() {\n const touch = ['touchstart', 'touchmove', 'touchend', 'touchcancel'];\n const desktop = ['pointerdown', 'pointermove', 'pointerup'];\n swiper.touchEventsTouch = {\n start: touch[0],\n move: touch[1],\n end: touch[2],\n cancel: touch[3]\n };\n swiper.touchEventsDesktop = {\n start: desktop[0],\n move: desktop[1],\n end: desktop[2]\n };\n return swiper.support.touch || !swiper.params.simulateTouch ? swiper.touchEventsTouch : swiper.touchEventsDesktop;\n }(),\n touchEventsData: {\n isTouched: undefined,\n isMoved: undefined,\n allowTouchCallbacks: undefined,\n touchStartTime: undefined,\n isScrolling: undefined,\n currentTranslate: undefined,\n startTranslate: undefined,\n allowThresholdMove: undefined,\n // Form elements to match\n focusableElements: swiper.params.focusableElements,\n // Last click time\n lastClickTime: now(),\n clickTimeout: undefined,\n // Velocities\n velocities: [],\n allowMomentumBounce: undefined,\n isTouchEvent: undefined,\n startMoving: undefined\n },\n // Clicks\n allowClick: true,\n // Touches\n allowTouchMove: swiper.params.allowTouchMove,\n touches: {\n startX: 0,\n startY: 0,\n currentX: 0,\n currentY: 0,\n diff: 0\n },\n // Images\n imagesToLoad: [],\n imagesLoaded: 0\n });\n swiper.emit('_swiper'); // Init\n\n if (swiper.params.init) {\n swiper.init();\n } // Return app instance\n\n\n return swiper;\n }\n\n enable() {\n const swiper = this;\n if (swiper.enabled) return;\n swiper.enabled = true;\n\n if (swiper.params.grabCursor) {\n swiper.setGrabCursor();\n }\n\n swiper.emit('enable');\n }\n\n disable() {\n const swiper = this;\n if (!swiper.enabled) return;\n swiper.enabled = false;\n\n if (swiper.params.grabCursor) {\n swiper.unsetGrabCursor();\n }\n\n swiper.emit('disable');\n }\n\n setProgress(progress, speed) {\n const swiper = this;\n progress = Math.min(Math.max(progress, 0), 1);\n const min = swiper.minTranslate();\n const max = swiper.maxTranslate();\n const current = (max - min) * progress + min;\n swiper.translateTo(current, typeof speed === 'undefined' ? 0 : speed);\n swiper.updateActiveIndex();\n swiper.updateSlidesClasses();\n }\n\n emitContainerClasses() {\n const swiper = this;\n if (!swiper.params._emitClasses || !swiper.el) return;\n const cls = swiper.el.className.split(' ').filter(className => {\n return className.indexOf('swiper') === 0 || className.indexOf(swiper.params.containerModifierClass) === 0;\n });\n swiper.emit('_containerClasses', cls.join(' '));\n }\n\n getSlideClasses(slideEl) {\n const swiper = this;\n return slideEl.className.split(' ').filter(className => {\n return className.indexOf('swiper-slide') === 0 || className.indexOf(swiper.params.slideClass) === 0;\n }).join(' ');\n }\n\n emitSlidesClasses() {\n const swiper = this;\n if (!swiper.params._emitClasses || !swiper.el) return;\n const updates = [];\n swiper.slides.each(slideEl => {\n const classNames = swiper.getSlideClasses(slideEl);\n updates.push({\n slideEl,\n classNames\n });\n swiper.emit('_slideClass', slideEl, classNames);\n });\n swiper.emit('_slideClasses', updates);\n }\n\n slidesPerViewDynamic(view = 'current', exact = false) {\n const swiper = this;\n const {\n params,\n slides,\n slidesGrid,\n slidesSizesGrid,\n size: swiperSize,\n activeIndex\n } = swiper;\n let spv = 1;\n\n if (params.centeredSlides) {\n let slideSize = slides[activeIndex].swiperSlideSize;\n let breakLoop;\n\n for (let i = activeIndex + 1; i < slides.length; i += 1) {\n if (slides[i] && !breakLoop) {\n slideSize += slides[i].swiperSlideSize;\n spv += 1;\n if (slideSize > swiperSize) breakLoop = true;\n }\n }\n\n for (let i = activeIndex - 1; i >= 0; i -= 1) {\n if (slides[i] && !breakLoop) {\n slideSize += slides[i].swiperSlideSize;\n spv += 1;\n if (slideSize > swiperSize) breakLoop = true;\n }\n }\n } else {\n // eslint-disable-next-line\n if (view === 'current') {\n for (let i = activeIndex + 1; i < slides.length; i += 1) {\n const slideInView = exact ? slidesGrid[i] + slidesSizesGrid[i] - slidesGrid[activeIndex] < swiperSize : slidesGrid[i] - slidesGrid[activeIndex] < swiperSize;\n\n if (slideInView) {\n spv += 1;\n }\n }\n } else {\n // previous\n for (let i = activeIndex - 1; i >= 0; i -= 1) {\n const slideInView = slidesGrid[activeIndex] - slidesGrid[i] < swiperSize;\n\n if (slideInView) {\n spv += 1;\n }\n }\n }\n }\n\n return spv;\n }\n\n update() {\n const swiper = this;\n if (!swiper || swiper.destroyed) return;\n const {\n snapGrid,\n params\n } = swiper; // Breakpoints\n\n if (params.breakpoints) {\n swiper.setBreakpoint();\n }\n\n swiper.updateSize();\n swiper.updateSlides();\n swiper.updateProgress();\n swiper.updateSlidesClasses();\n\n function setTranslate() {\n const translateValue = swiper.rtlTranslate ? swiper.translate * -1 : swiper.translate;\n const newTranslate = Math.min(Math.max(translateValue, swiper.maxTranslate()), swiper.minTranslate());\n swiper.setTranslate(newTranslate);\n swiper.updateActiveIndex();\n swiper.updateSlidesClasses();\n }\n\n let translated;\n\n if (swiper.params.freeMode && swiper.params.freeMode.enabled) {\n setTranslate();\n\n if (swiper.params.autoHeight) {\n swiper.updateAutoHeight();\n }\n } else {\n if ((swiper.params.slidesPerView === 'auto' || swiper.params.slidesPerView > 1) && swiper.isEnd && !swiper.params.centeredSlides) {\n translated = swiper.slideTo(swiper.slides.length - 1, 0, false, true);\n } else {\n translated = swiper.slideTo(swiper.activeIndex, 0, false, true);\n }\n\n if (!translated) {\n setTranslate();\n }\n }\n\n if (params.watchOverflow && snapGrid !== swiper.snapGrid) {\n swiper.checkOverflow();\n }\n\n swiper.emit('update');\n }\n\n changeDirection(newDirection, needUpdate = true) {\n const swiper = this;\n const currentDirection = swiper.params.direction;\n\n if (!newDirection) {\n // eslint-disable-next-line\n newDirection = currentDirection === 'horizontal' ? 'vertical' : 'horizontal';\n }\n\n if (newDirection === currentDirection || newDirection !== 'horizontal' && newDirection !== 'vertical') {\n return swiper;\n }\n\n swiper.$el.removeClass(`${swiper.params.containerModifierClass}${currentDirection}`).addClass(`${swiper.params.containerModifierClass}${newDirection}`);\n swiper.emitContainerClasses();\n swiper.params.direction = newDirection;\n swiper.slides.each(slideEl => {\n if (newDirection === 'vertical') {\n slideEl.style.width = '';\n } else {\n slideEl.style.height = '';\n }\n });\n swiper.emit('changeDirection');\n if (needUpdate) swiper.update();\n return swiper;\n }\n\n mount(el) {\n const swiper = this;\n if (swiper.mounted) return true; // Find el\n\n const $el = $(el || swiper.params.el);\n el = $el[0];\n\n if (!el) {\n return false;\n }\n\n el.swiper = swiper;\n\n const getWrapperSelector = () => {\n return `.${(swiper.params.wrapperClass || '').trim().split(' ').join('.')}`;\n };\n\n const getWrapper = () => {\n if (el && el.shadowRoot && el.shadowRoot.querySelector) {\n const res = $(el.shadowRoot.querySelector(getWrapperSelector())); // Children needs to return slot items\n\n res.children = options => $el.children(options);\n\n return res;\n }\n\n return $el.children(getWrapperSelector());\n }; // Find Wrapper\n\n\n let $wrapperEl = getWrapper();\n\n if ($wrapperEl.length === 0 && swiper.params.createElements) {\n const document = getDocument();\n const wrapper = document.createElement('div');\n $wrapperEl = $(wrapper);\n wrapper.className = swiper.params.wrapperClass;\n $el.append(wrapper);\n $el.children(`.${swiper.params.slideClass}`).each(slideEl => {\n $wrapperEl.append(slideEl);\n });\n }\n\n Object.assign(swiper, {\n $el,\n el,\n $wrapperEl,\n wrapperEl: $wrapperEl[0],\n mounted: true,\n // RTL\n rtl: el.dir.toLowerCase() === 'rtl' || $el.css('direction') === 'rtl',\n rtlTranslate: swiper.params.direction === 'horizontal' && (el.dir.toLowerCase() === 'rtl' || $el.css('direction') === 'rtl'),\n wrongRTL: $wrapperEl.css('display') === '-webkit-box'\n });\n return true;\n }\n\n init(el) {\n const swiper = this;\n if (swiper.initialized) return swiper;\n const mounted = swiper.mount(el);\n if (mounted === false) return swiper;\n swiper.emit('beforeInit'); // Set breakpoint\n\n if (swiper.params.breakpoints) {\n swiper.setBreakpoint();\n } // Add Classes\n\n\n swiper.addClasses(); // Create loop\n\n if (swiper.params.loop) {\n swiper.loopCreate();\n } // Update size\n\n\n swiper.updateSize(); // Update slides\n\n swiper.updateSlides();\n\n if (swiper.params.watchOverflow) {\n swiper.checkOverflow();\n } // Set Grab Cursor\n\n\n if (swiper.params.grabCursor && swiper.enabled) {\n swiper.setGrabCursor();\n }\n\n if (swiper.params.preloadImages) {\n swiper.preloadImages();\n } // Slide To Initial Slide\n\n\n if (swiper.params.loop) {\n swiper.slideTo(swiper.params.initialSlide + swiper.loopedSlides, 0, swiper.params.runCallbacksOnInit, false, true);\n } else {\n swiper.slideTo(swiper.params.initialSlide, 0, swiper.params.runCallbacksOnInit, false, true);\n } // Attach events\n\n\n swiper.attachEvents(); // Init Flag\n\n swiper.initialized = true; // Emit\n\n swiper.emit('init');\n swiper.emit('afterInit');\n return swiper;\n }\n\n destroy(deleteInstance = true, cleanStyles = true) {\n const swiper = this;\n const {\n params,\n $el,\n $wrapperEl,\n slides\n } = swiper;\n\n if (typeof swiper.params === 'undefined' || swiper.destroyed) {\n return null;\n }\n\n swiper.emit('beforeDestroy'); // Init Flag\n\n swiper.initialized = false; // Detach events\n\n swiper.detachEvents(); // Destroy loop\n\n if (params.loop) {\n swiper.loopDestroy();\n } // Cleanup styles\n\n\n if (cleanStyles) {\n swiper.removeClasses();\n $el.removeAttr('style');\n $wrapperEl.removeAttr('style');\n\n if (slides && slides.length) {\n slides.removeClass([params.slideVisibleClass, params.slideActiveClass, params.slideNextClass, params.slidePrevClass].join(' ')).removeAttr('style').removeAttr('data-swiper-slide-index');\n }\n }\n\n swiper.emit('destroy'); // Detach emitter events\n\n Object.keys(swiper.eventsListeners).forEach(eventName => {\n swiper.off(eventName);\n });\n\n if (deleteInstance !== false) {\n swiper.$el[0].swiper = null;\n deleteProps(swiper);\n }\n\n swiper.destroyed = true;\n return null;\n }\n\n static extendDefaults(newDefaults) {\n extend(extendedDefaults, newDefaults);\n }\n\n static get extendedDefaults() {\n return extendedDefaults;\n }\n\n static get defaults() {\n return defaults;\n }\n\n static installModule(mod) {\n if (!Swiper.prototype.__modules__) Swiper.prototype.__modules__ = [];\n const modules = Swiper.prototype.__modules__;\n\n if (typeof mod === 'function' && modules.indexOf(mod) < 0) {\n modules.push(mod);\n }\n }\n\n static use(module) {\n if (Array.isArray(module)) {\n module.forEach(m => Swiper.installModule(m));\n return Swiper;\n }\n\n Swiper.installModule(module);\n return Swiper;\n }\n\n}\n\nObject.keys(prototypes).forEach(prototypeGroup => {\n Object.keys(prototypes[prototypeGroup]).forEach(protoMethod => {\n Swiper.prototype[protoMethod] = prototypes[prototypeGroup][protoMethod];\n });\n});\nSwiper.use([Resize, Observer]);\nexport default Swiper;","export default {\n init: true,\n direction: 'horizontal',\n touchEventsTarget: 'wrapper',\n initialSlide: 0,\n speed: 300,\n cssMode: false,\n updateOnWindowResize: true,\n resizeObserver: true,\n nested: false,\n createElements: false,\n enabled: true,\n focusableElements: 'input, select, option, textarea, button, video, label',\n // Overrides\n width: null,\n height: null,\n //\n preventInteractionOnTransition: false,\n // ssr\n userAgent: null,\n url: null,\n // To support iOS's swipe-to-go-back gesture (when being used in-app).\n edgeSwipeDetection: false,\n edgeSwipeThreshold: 20,\n // Autoheight\n autoHeight: false,\n // Set wrapper width\n setWrapperSize: false,\n // Virtual Translate\n virtualTranslate: false,\n // Effects\n effect: 'slide',\n // 'slide' or 'fade' or 'cube' or 'coverflow' or 'flip'\n // Breakpoints\n breakpoints: undefined,\n breakpointsBase: 'window',\n // Slides grid\n spaceBetween: 0,\n slidesPerView: 1,\n slidesPerGroup: 1,\n slidesPerGroupSkip: 0,\n slidesPerGroupAuto: false,\n centeredSlides: false,\n centeredSlidesBounds: false,\n slidesOffsetBefore: 0,\n // in px\n slidesOffsetAfter: 0,\n // in px\n normalizeSlideIndex: true,\n centerInsufficientSlides: false,\n // Disable swiper and hide navigation when container not overflow\n watchOverflow: true,\n // Round length\n roundLengths: false,\n // Touches\n touchRatio: 1,\n touchAngle: 45,\n simulateTouch: true,\n shortSwipes: true,\n longSwipes: true,\n longSwipesRatio: 0.5,\n longSwipesMs: 300,\n followFinger: true,\n allowTouchMove: true,\n threshold: 0,\n touchMoveStopPropagation: false,\n touchStartPreventDefault: true,\n touchStartForcePreventDefault: false,\n touchReleaseOnEdges: false,\n // Unique Navigation Elements\n uniqueNavElements: true,\n // Resistance\n resistance: true,\n resistanceRatio: 0.85,\n // Progress\n watchSlidesProgress: false,\n // Cursor\n grabCursor: false,\n // Clicks\n preventClicks: true,\n preventClicksPropagation: true,\n slideToClickedSlide: false,\n // Images\n preloadImages: true,\n updateOnImagesReady: true,\n // loop\n loop: false,\n loopAdditionalSlides: 0,\n loopedSlides: null,\n loopFillGroupWithBlank: false,\n loopPreventsSlide: true,\n // rewind\n rewind: false,\n // Swiping/no swiping\n allowSlidePrev: true,\n allowSlideNext: true,\n swipeHandler: null,\n // '.swipe-handler',\n noSwiping: true,\n noSwipingClass: 'swiper-no-swiping',\n noSwipingSelector: null,\n // Passive Listeners\n passiveListeners: true,\n // NS\n containerModifierClass: 'swiper-',\n // NEW\n slideClass: 'swiper-slide',\n slideBlankClass: 'swiper-slide-invisible-blank',\n slideActiveClass: 'swiper-slide-active',\n slideDuplicateActiveClass: 'swiper-slide-duplicate-active',\n slideVisibleClass: 'swiper-slide-visible',\n slideDuplicateClass: 'swiper-slide-duplicate',\n slideNextClass: 'swiper-slide-next',\n slideDuplicateNextClass: 'swiper-slide-duplicate-next',\n slidePrevClass: 'swiper-slide-prev',\n slideDuplicatePrevClass: 'swiper-slide-duplicate-prev',\n wrapperClass: 'swiper-wrapper',\n // Callbacks\n runCallbacksOnInit: true,\n // Internals\n _emitClasses: false\n};","/* eslint-disable no-underscore-dangle */\nexport default {\n on(events, handler, priority) {\n const self = this;\n if (typeof handler !== 'function') return self;\n const method = priority ? 'unshift' : 'push';\n events.split(' ').forEach(event => {\n if (!self.eventsListeners[event]) self.eventsListeners[event] = [];\n self.eventsListeners[event][method](handler);\n });\n return self;\n },\n\n once(events, handler, priority) {\n const self = this;\n if (typeof handler !== 'function') return self;\n\n function onceHandler(...args) {\n self.off(events, onceHandler);\n\n if (onceHandler.__emitterProxy) {\n delete onceHandler.__emitterProxy;\n }\n\n handler.apply(self, args);\n }\n\n onceHandler.__emitterProxy = handler;\n return self.on(events, onceHandler, priority);\n },\n\n onAny(handler, priority) {\n const self = this;\n if (typeof handler !== 'function') return self;\n const method = priority ? 'unshift' : 'push';\n\n if (self.eventsAnyListeners.indexOf(handler) < 0) {\n self.eventsAnyListeners[method](handler);\n }\n\n return self;\n },\n\n offAny(handler) {\n const self = this;\n if (!self.eventsAnyListeners) return self;\n const index = self.eventsAnyListeners.indexOf(handler);\n\n if (index >= 0) {\n self.eventsAnyListeners.splice(index, 1);\n }\n\n return self;\n },\n\n off(events, handler) {\n const self = this;\n if (!self.eventsListeners) return self;\n events.split(' ').forEach(event => {\n if (typeof handler === 'undefined') {\n self.eventsListeners[event] = [];\n } else if (self.eventsListeners[event]) {\n self.eventsListeners[event].forEach((eventHandler, index) => {\n if (eventHandler === handler || eventHandler.__emitterProxy && eventHandler.__emitterProxy === handler) {\n self.eventsListeners[event].splice(index, 1);\n }\n });\n }\n });\n return self;\n },\n\n emit(...args) {\n const self = this;\n if (!self.eventsListeners) return self;\n let events;\n let data;\n let context;\n\n if (typeof args[0] === 'string' || Array.isArray(args[0])) {\n events = args[0];\n data = args.slice(1, args.length);\n context = self;\n } else {\n events = args[0].events;\n data = args[0].data;\n context = args[0].context || self;\n }\n\n data.unshift(context);\n const eventsArray = Array.isArray(events) ? events : events.split(' ');\n eventsArray.forEach(event => {\n if (self.eventsAnyListeners && self.eventsAnyListeners.length) {\n self.eventsAnyListeners.forEach(eventHandler => {\n eventHandler.apply(context, [event, ...data]);\n });\n }\n\n if (self.eventsListeners && self.eventsListeners[event]) {\n self.eventsListeners[event].forEach(eventHandler => {\n eventHandler.apply(context, data);\n });\n }\n });\n return self;\n }\n\n};","import { getDocument } from 'ssr-window';\nimport onTouchStart from './onTouchStart.js';\nimport onTouchMove from './onTouchMove.js';\nimport onTouchEnd from './onTouchEnd.js';\nimport onResize from './onResize.js';\nimport onClick from './onClick.js';\nimport onScroll from './onScroll.js';\nlet dummyEventAttached = false;\n\nfunction dummyEventListener() {}\n\nconst events = (swiper, method) => {\n const document = getDocument();\n const {\n params,\n touchEvents,\n el,\n wrapperEl,\n device,\n support\n } = swiper;\n const capture = !!params.nested;\n const domMethod = method === 'on' ? 'addEventListener' : 'removeEventListener';\n const swiperMethod = method; // Touch Events\n\n if (!support.touch) {\n el[domMethod](touchEvents.start, swiper.onTouchStart, false);\n document[domMethod](touchEvents.move, swiper.onTouchMove, capture);\n document[domMethod](touchEvents.end, swiper.onTouchEnd, false);\n } else {\n const passiveListener = touchEvents.start === 'touchstart' && support.passiveListener && params.passiveListeners ? {\n passive: true,\n capture: false\n } : false;\n el[domMethod](touchEvents.start, swiper.onTouchStart, passiveListener);\n el[domMethod](touchEvents.move, swiper.onTouchMove, support.passiveListener ? {\n passive: false,\n capture\n } : capture);\n el[domMethod](touchEvents.end, swiper.onTouchEnd, passiveListener);\n\n if (touchEvents.cancel) {\n el[domMethod](touchEvents.cancel, swiper.onTouchEnd, passiveListener);\n }\n } // Prevent Links Clicks\n\n\n if (params.preventClicks || params.preventClicksPropagation) {\n el[domMethod]('click', swiper.onClick, true);\n }\n\n if (params.cssMode) {\n wrapperEl[domMethod]('scroll', swiper.onScroll);\n } // Resize handler\n\n\n if (params.updateOnWindowResize) {\n swiper[swiperMethod](device.ios || device.android ? 'resize orientationchange observerUpdate' : 'resize observerUpdate', onResize, true);\n } else {\n swiper[swiperMethod]('observerUpdate', onResize, true);\n }\n};\n\nfunction attachEvents() {\n const swiper = this;\n const document = getDocument();\n const {\n params,\n support\n } = swiper;\n swiper.onTouchStart = onTouchStart.bind(swiper);\n swiper.onTouchMove = onTouchMove.bind(swiper);\n swiper.onTouchEnd = onTouchEnd.bind(swiper);\n\n if (params.cssMode) {\n swiper.onScroll = onScroll.bind(swiper);\n }\n\n swiper.onClick = onClick.bind(swiper);\n\n if (support.touch && !dummyEventAttached) {\n document.addEventListener('touchstart', dummyEventListener);\n dummyEventAttached = true;\n }\n\n events(swiper, 'on');\n}\n\nfunction detachEvents() {\n const swiper = this;\n events(swiper, 'off');\n}\n\nexport default {\n attachEvents,\n detachEvents\n};","export default function onClick(e) {\n const swiper = this;\n if (!swiper.enabled) return;\n\n if (!swiper.allowClick) {\n if (swiper.params.preventClicks) e.preventDefault();\n\n if (swiper.params.preventClicksPropagation && swiper.animating) {\n e.stopPropagation();\n e.stopImmediatePropagation();\n }\n }\n}","export default function onResize() {\n const swiper = this;\n const {\n params,\n el\n } = swiper;\n if (el && el.offsetWidth === 0) return; // Breakpoints\n\n if (params.breakpoints) {\n swiper.setBreakpoint();\n } // Save locks\n\n\n const {\n allowSlideNext,\n allowSlidePrev,\n snapGrid\n } = swiper; // Disable locks on resize\n\n swiper.allowSlideNext = true;\n swiper.allowSlidePrev = true;\n swiper.updateSize();\n swiper.updateSlides();\n swiper.updateSlidesClasses();\n\n if ((params.slidesPerView === 'auto' || params.slidesPerView > 1) && swiper.isEnd && !swiper.isBeginning && !swiper.params.centeredSlides) {\n swiper.slideTo(swiper.slides.length - 1, 0, false, true);\n } else {\n swiper.slideTo(swiper.activeIndex, 0, false, true);\n }\n\n if (swiper.autoplay && swiper.autoplay.running && swiper.autoplay.paused) {\n swiper.autoplay.run();\n } // Return locks after resize\n\n\n swiper.allowSlidePrev = allowSlidePrev;\n swiper.allowSlideNext = allowSlideNext;\n\n if (swiper.params.watchOverflow && snapGrid !== swiper.snapGrid) {\n swiper.checkOverflow();\n }\n}","export default function onScroll() {\n const swiper = this;\n const {\n wrapperEl,\n rtlTranslate,\n enabled\n } = swiper;\n if (!enabled) return;\n swiper.previousTranslate = swiper.translate;\n\n if (swiper.isHorizontal()) {\n swiper.translate = -wrapperEl.scrollLeft;\n } else {\n swiper.translate = -wrapperEl.scrollTop;\n } // eslint-disable-next-line\n\n\n if (swiper.translate === -0) swiper.translate = 0;\n swiper.updateActiveIndex();\n swiper.updateSlidesClasses();\n let newProgress;\n const translatesDiff = swiper.maxTranslate() - swiper.minTranslate();\n\n if (translatesDiff === 0) {\n newProgress = 0;\n } else {\n newProgress = (swiper.translate - swiper.minTranslate()) / translatesDiff;\n }\n\n if (newProgress !== swiper.progress) {\n swiper.updateProgress(rtlTranslate ? -swiper.translate : swiper.translate);\n }\n\n swiper.emit('setTranslate', swiper.translate, false);\n}","import { now, nextTick } from '../../shared/utils.js';\nexport default function onTouchEnd(event) {\n const swiper = this;\n const data = swiper.touchEventsData;\n const {\n params,\n touches,\n rtlTranslate: rtl,\n slidesGrid,\n enabled\n } = swiper;\n if (!enabled) return;\n let e = event;\n if (e.originalEvent) e = e.originalEvent;\n\n if (data.allowTouchCallbacks) {\n swiper.emit('touchEnd', e);\n }\n\n data.allowTouchCallbacks = false;\n\n if (!data.isTouched) {\n if (data.isMoved && params.grabCursor) {\n swiper.setGrabCursor(false);\n }\n\n data.isMoved = false;\n data.startMoving = false;\n return;\n } // Return Grab Cursor\n\n\n if (params.grabCursor && data.isMoved && data.isTouched && (swiper.allowSlideNext === true || swiper.allowSlidePrev === true)) {\n swiper.setGrabCursor(false);\n } // Time diff\n\n\n const touchEndTime = now();\n const timeDiff = touchEndTime - data.touchStartTime; // Tap, doubleTap, Click\n\n if (swiper.allowClick) {\n const pathTree = e.path || e.composedPath && e.composedPath();\n swiper.updateClickedSlide(pathTree && pathTree[0] || e.target);\n swiper.emit('tap click', e);\n\n if (timeDiff < 300 && touchEndTime - data.lastClickTime < 300) {\n swiper.emit('doubleTap doubleClick', e);\n }\n }\n\n data.lastClickTime = now();\n nextTick(() => {\n if (!swiper.destroyed) swiper.allowClick = true;\n });\n\n if (!data.isTouched || !data.isMoved || !swiper.swipeDirection || touches.diff === 0 || data.currentTranslate === data.startTranslate) {\n data.isTouched = false;\n data.isMoved = false;\n data.startMoving = false;\n return;\n }\n\n data.isTouched = false;\n data.isMoved = false;\n data.startMoving = false;\n let currentPos;\n\n if (params.followFinger) {\n currentPos = rtl ? swiper.translate : -swiper.translate;\n } else {\n currentPos = -data.currentTranslate;\n }\n\n if (params.cssMode) {\n return;\n }\n\n if (swiper.params.freeMode && params.freeMode.enabled) {\n swiper.freeMode.onTouchEnd({\n currentPos\n });\n return;\n } // Find current slide\n\n\n let stopIndex = 0;\n let groupSize = swiper.slidesSizesGrid[0];\n\n for (let i = 0; i < slidesGrid.length; i += i < params.slidesPerGroupSkip ? 1 : params.slidesPerGroup) {\n const increment = i < params.slidesPerGroupSkip - 1 ? 1 : params.slidesPerGroup;\n\n if (typeof slidesGrid[i + increment] !== 'undefined') {\n if (currentPos >= slidesGrid[i] && currentPos < slidesGrid[i + increment]) {\n stopIndex = i;\n groupSize = slidesGrid[i + increment] - slidesGrid[i];\n }\n } else if (currentPos >= slidesGrid[i]) {\n stopIndex = i;\n groupSize = slidesGrid[slidesGrid.length - 1] - slidesGrid[slidesGrid.length - 2];\n }\n } // Find current slide size\n\n\n const ratio = (currentPos - slidesGrid[stopIndex]) / groupSize;\n const increment = stopIndex < params.slidesPerGroupSkip - 1 ? 1 : params.slidesPerGroup;\n\n if (timeDiff > params.longSwipesMs) {\n // Long touches\n if (!params.longSwipes) {\n swiper.slideTo(swiper.activeIndex);\n return;\n }\n\n if (swiper.swipeDirection === 'next') {\n if (ratio >= params.longSwipesRatio) swiper.slideTo(stopIndex + increment);else swiper.slideTo(stopIndex);\n }\n\n if (swiper.swipeDirection === 'prev') {\n if (ratio > 1 - params.longSwipesRatio) swiper.slideTo(stopIndex + increment);else swiper.slideTo(stopIndex);\n }\n } else {\n // Short swipes\n if (!params.shortSwipes) {\n swiper.slideTo(swiper.activeIndex);\n return;\n }\n\n const isNavButtonTarget = swiper.navigation && (e.target === swiper.navigation.nextEl || e.target === swiper.navigation.prevEl);\n\n if (!isNavButtonTarget) {\n if (swiper.swipeDirection === 'next') {\n swiper.slideTo(stopIndex + increment);\n }\n\n if (swiper.swipeDirection === 'prev') {\n swiper.slideTo(stopIndex);\n }\n } else if (e.target === swiper.navigation.nextEl) {\n swiper.slideTo(stopIndex + increment);\n } else {\n swiper.slideTo(stopIndex);\n }\n }\n}","import { getDocument } from 'ssr-window';\nimport $ from '../../shared/dom.js';\nimport { now } from '../../shared/utils.js';\nexport default function onTouchMove(event) {\n const document = getDocument();\n const swiper = this;\n const data = swiper.touchEventsData;\n const {\n params,\n touches,\n rtlTranslate: rtl,\n enabled\n } = swiper;\n if (!enabled) return;\n let e = event;\n if (e.originalEvent) e = e.originalEvent;\n\n if (!data.isTouched) {\n if (data.startMoving && data.isScrolling) {\n swiper.emit('touchMoveOpposite', e);\n }\n\n return;\n }\n\n if (data.isTouchEvent && e.type !== 'touchmove') return;\n const targetTouch = e.type === 'touchmove' && e.targetTouches && (e.targetTouches[0] || e.changedTouches[0]);\n const pageX = e.type === 'touchmove' ? targetTouch.pageX : e.pageX;\n const pageY = e.type === 'touchmove' ? targetTouch.pageY : e.pageY;\n\n if (e.preventedByNestedSwiper) {\n touches.startX = pageX;\n touches.startY = pageY;\n return;\n }\n\n if (!swiper.allowTouchMove) {\n // isMoved = true;\n swiper.allowClick = false;\n\n if (data.isTouched) {\n Object.assign(touches, {\n startX: pageX,\n startY: pageY,\n currentX: pageX,\n currentY: pageY\n });\n data.touchStartTime = now();\n }\n\n return;\n }\n\n if (data.isTouchEvent && params.touchReleaseOnEdges && !params.loop) {\n if (swiper.isVertical()) {\n // Vertical\n if (pageY < touches.startY && swiper.translate <= swiper.maxTranslate() || pageY > touches.startY && swiper.translate >= swiper.minTranslate()) {\n data.isTouched = false;\n data.isMoved = false;\n return;\n }\n } else if (pageX < touches.startX && swiper.translate <= swiper.maxTranslate() || pageX > touches.startX && swiper.translate >= swiper.minTranslate()) {\n return;\n }\n }\n\n if (data.isTouchEvent && document.activeElement) {\n if (e.target === document.activeElement && $(e.target).is(data.focusableElements)) {\n data.isMoved = true;\n swiper.allowClick = false;\n return;\n }\n }\n\n if (data.allowTouchCallbacks) {\n swiper.emit('touchMove', e);\n }\n\n if (e.targetTouches && e.targetTouches.length > 1) return;\n touches.currentX = pageX;\n touches.currentY = pageY;\n const diffX = touches.currentX - touches.startX;\n const diffY = touches.currentY - touches.startY;\n if (swiper.params.threshold && Math.sqrt(diffX ** 2 + diffY ** 2) < swiper.params.threshold) return;\n\n if (typeof data.isScrolling === 'undefined') {\n let touchAngle;\n\n if (swiper.isHorizontal() && touches.currentY === touches.startY || swiper.isVertical() && touches.currentX === touches.startX) {\n data.isScrolling = false;\n } else {\n // eslint-disable-next-line\n if (diffX * diffX + diffY * diffY >= 25) {\n touchAngle = Math.atan2(Math.abs(diffY), Math.abs(diffX)) * 180 / Math.PI;\n data.isScrolling = swiper.isHorizontal() ? touchAngle > params.touchAngle : 90 - touchAngle > params.touchAngle;\n }\n }\n }\n\n if (data.isScrolling) {\n swiper.emit('touchMoveOpposite', e);\n }\n\n if (typeof data.startMoving === 'undefined') {\n if (touches.currentX !== touches.startX || touches.currentY !== touches.startY) {\n data.startMoving = true;\n }\n }\n\n if (data.isScrolling) {\n data.isTouched = false;\n return;\n }\n\n if (!data.startMoving) {\n return;\n }\n\n swiper.allowClick = false;\n\n if (!params.cssMode && e.cancelable) {\n e.preventDefault();\n }\n\n if (params.touchMoveStopPropagation && !params.nested) {\n e.stopPropagation();\n }\n\n if (!data.isMoved) {\n if (params.loop && !params.cssMode) {\n swiper.loopFix();\n }\n\n data.startTranslate = swiper.getTranslate();\n swiper.setTransition(0);\n\n if (swiper.animating) {\n swiper.$wrapperEl.trigger('webkitTransitionEnd transitionend');\n }\n\n data.allowMomentumBounce = false; // Grab Cursor\n\n if (params.grabCursor && (swiper.allowSlideNext === true || swiper.allowSlidePrev === true)) {\n swiper.setGrabCursor(true);\n }\n\n swiper.emit('sliderFirstMove', e);\n }\n\n swiper.emit('sliderMove', e);\n data.isMoved = true;\n let diff = swiper.isHorizontal() ? diffX : diffY;\n touches.diff = diff;\n diff *= params.touchRatio;\n if (rtl) diff = -diff;\n swiper.swipeDirection = diff > 0 ? 'prev' : 'next';\n data.currentTranslate = diff + data.startTranslate;\n let disableParentSwiper = true;\n let resistanceRatio = params.resistanceRatio;\n\n if (params.touchReleaseOnEdges) {\n resistanceRatio = 0;\n }\n\n if (diff > 0 && data.currentTranslate > swiper.minTranslate()) {\n disableParentSwiper = false;\n if (params.resistance) data.currentTranslate = swiper.minTranslate() - 1 + (-swiper.minTranslate() + data.startTranslate + diff) ** resistanceRatio;\n } else if (diff < 0 && data.currentTranslate < swiper.maxTranslate()) {\n disableParentSwiper = false;\n if (params.resistance) data.currentTranslate = swiper.maxTranslate() + 1 - (swiper.maxTranslate() - data.startTranslate - diff) ** resistanceRatio;\n }\n\n if (disableParentSwiper) {\n e.preventedByNestedSwiper = true;\n } // Directions locks\n\n\n if (!swiper.allowSlideNext && swiper.swipeDirection === 'next' && data.currentTranslate < data.startTranslate) {\n data.currentTranslate = data.startTranslate;\n }\n\n if (!swiper.allowSlidePrev && swiper.swipeDirection === 'prev' && data.currentTranslate > data.startTranslate) {\n data.currentTranslate = data.startTranslate;\n }\n\n if (!swiper.allowSlidePrev && !swiper.allowSlideNext) {\n data.currentTranslate = data.startTranslate;\n } // Threshold\n\n\n if (params.threshold > 0) {\n if (Math.abs(diff) > params.threshold || data.allowThresholdMove) {\n if (!data.allowThresholdMove) {\n data.allowThresholdMove = true;\n touches.startX = touches.currentX;\n touches.startY = touches.currentY;\n data.currentTranslate = data.startTranslate;\n touches.diff = swiper.isHorizontal() ? touches.currentX - touches.startX : touches.currentY - touches.startY;\n return;\n }\n } else {\n data.currentTranslate = data.startTranslate;\n return;\n }\n }\n\n if (!params.followFinger || params.cssMode) return; // Update active index in free mode\n\n if (params.freeMode && params.freeMode.enabled && swiper.freeMode || params.watchSlidesProgress) {\n swiper.updateActiveIndex();\n swiper.updateSlidesClasses();\n }\n\n if (swiper.params.freeMode && params.freeMode.enabled && swiper.freeMode) {\n swiper.freeMode.onTouchMove();\n } // Update progress\n\n\n swiper.updateProgress(data.currentTranslate); // Update translate\n\n swiper.setTranslate(data.currentTranslate);\n}","import { getWindow, getDocument } from 'ssr-window';\nimport $ from '../../shared/dom.js';\nimport { now } from '../../shared/utils.js'; // Modified from https://stackoverflow.com/questions/54520554/custom-element-getrootnode-closest-function-crossing-multiple-parent-shadowd\n\nfunction closestElement(selector, base = this) {\n function __closestFrom(el) {\n if (!el || el === getDocument() || el === getWindow()) return null;\n if (el.assignedSlot) el = el.assignedSlot;\n const found = el.closest(selector);\n return found || __closestFrom(el.getRootNode().host);\n }\n\n return __closestFrom(base);\n}\n\nexport default function onTouchStart(event) {\n const swiper = this;\n const document = getDocument();\n const window = getWindow();\n const data = swiper.touchEventsData;\n const {\n params,\n touches,\n enabled\n } = swiper;\n if (!enabled) return;\n\n if (swiper.animating && params.preventInteractionOnTransition) {\n return;\n }\n\n if (!swiper.animating && params.cssMode && params.loop) {\n swiper.loopFix();\n }\n\n let e = event;\n if (e.originalEvent) e = e.originalEvent;\n let $targetEl = $(e.target);\n\n if (params.touchEventsTarget === 'wrapper') {\n if (!$targetEl.closest(swiper.wrapperEl).length) return;\n }\n\n data.isTouchEvent = e.type === 'touchstart';\n if (!data.isTouchEvent && 'which' in e && e.which === 3) return;\n if (!data.isTouchEvent && 'button' in e && e.button > 0) return;\n if (data.isTouched && data.isMoved) return; // change target el for shadow root component\n\n const swipingClassHasValue = !!params.noSwipingClass && params.noSwipingClass !== '';\n\n if (swipingClassHasValue && e.target && e.target.shadowRoot && event.path && event.path[0]) {\n $targetEl = $(event.path[0]);\n }\n\n const noSwipingSelector = params.noSwipingSelector ? params.noSwipingSelector : `.${params.noSwipingClass}`;\n const isTargetShadow = !!(e.target && e.target.shadowRoot); // use closestElement for shadow root element to get the actual closest for nested shadow root element\n\n if (params.noSwiping && (isTargetShadow ? closestElement(noSwipingSelector, e.target) : $targetEl.closest(noSwipingSelector)[0])) {\n swiper.allowClick = true;\n return;\n }\n\n if (params.swipeHandler) {\n if (!$targetEl.closest(params.swipeHandler)[0]) return;\n }\n\n touches.currentX = e.type === 'touchstart' ? e.targetTouches[0].pageX : e.pageX;\n touches.currentY = e.type === 'touchstart' ? e.targetTouches[0].pageY : e.pageY;\n const startX = touches.currentX;\n const startY = touches.currentY; // Do NOT start if iOS edge swipe is detected. Otherwise iOS app cannot swipe-to-go-back anymore\n\n const edgeSwipeDetection = params.edgeSwipeDetection || params.iOSEdgeSwipeDetection;\n const edgeSwipeThreshold = params.edgeSwipeThreshold || params.iOSEdgeSwipeThreshold;\n\n if (edgeSwipeDetection && (startX <= edgeSwipeThreshold || startX >= window.innerWidth - edgeSwipeThreshold)) {\n if (edgeSwipeDetection === 'prevent') {\n event.preventDefault();\n } else {\n return;\n }\n }\n\n Object.assign(data, {\n isTouched: true,\n isMoved: false,\n allowTouchCallbacks: true,\n isScrolling: undefined,\n startMoving: undefined\n });\n touches.startX = startX;\n touches.startY = startY;\n data.touchStartTime = now();\n swiper.allowClick = true;\n swiper.updateSize();\n swiper.swipeDirection = undefined;\n if (params.threshold > 0) data.allowThresholdMove = false;\n\n if (e.type !== 'touchstart') {\n let preventDefault = true;\n if ($targetEl.is(data.focusableElements)) preventDefault = false;\n\n if (document.activeElement && $(document.activeElement).is(data.focusableElements) && document.activeElement !== $targetEl[0]) {\n document.activeElement.blur();\n }\n\n const shouldPreventDefault = preventDefault && swiper.allowTouchMove && params.touchStartPreventDefault;\n\n if ((params.touchStartForcePreventDefault || shouldPreventDefault) && !$targetEl[0].isContentEditable) {\n e.preventDefault();\n }\n }\n\n swiper.emit('touchStart', e);\n}","import setGrabCursor from './setGrabCursor.js';\nimport unsetGrabCursor from './unsetGrabCursor.js';\nexport default {\n setGrabCursor,\n unsetGrabCursor\n};","export default function setGrabCursor(moving) {\n const swiper = this;\n if (swiper.support.touch || !swiper.params.simulateTouch || swiper.params.watchOverflow && swiper.isLocked || swiper.params.cssMode) return;\n const el = swiper.params.touchEventsTarget === 'container' ? swiper.el : swiper.wrapperEl;\n el.style.cursor = 'move';\n el.style.cursor = moving ? '-webkit-grabbing' : '-webkit-grab';\n el.style.cursor = moving ? '-moz-grabbin' : '-moz-grab';\n el.style.cursor = moving ? 'grabbing' : 'grab';\n}","export default function unsetGrabCursor() {\n const swiper = this;\n\n if (swiper.support.touch || swiper.params.watchOverflow && swiper.isLocked || swiper.params.cssMode) {\n return;\n }\n\n swiper[swiper.params.touchEventsTarget === 'container' ? 'el' : 'wrapperEl'].style.cursor = '';\n}","import loadImage from './loadImage.js';\nimport preloadImages from './preloadImages.js';\nexport default {\n loadImage,\n preloadImages\n};","import { getWindow } from 'ssr-window';\nimport $ from '../../shared/dom.js';\nexport default function loadImage(imageEl, src, srcset, sizes, checkForComplete, callback) {\n const window = getWindow();\n let image;\n\n function onReady() {\n if (callback) callback();\n }\n\n const isPicture = $(imageEl).parent('picture')[0];\n\n if (!isPicture && (!imageEl.complete || !checkForComplete)) {\n if (src) {\n image = new window.Image();\n image.onload = onReady;\n image.onerror = onReady;\n\n if (sizes) {\n image.sizes = sizes;\n }\n\n if (srcset) {\n image.srcset = srcset;\n }\n\n if (src) {\n image.src = src;\n }\n } else {\n onReady();\n }\n } else {\n // image already loaded...\n onReady();\n }\n}","export default function preloadImages() {\n const swiper = this;\n swiper.imagesToLoad = swiper.$el.find('img');\n\n function onReady() {\n if (typeof swiper === 'undefined' || swiper === null || !swiper || swiper.destroyed) return;\n if (swiper.imagesLoaded !== undefined) swiper.imagesLoaded += 1;\n\n if (swiper.imagesLoaded === swiper.imagesToLoad.length) {\n if (swiper.params.updateOnImagesReady) swiper.update();\n swiper.emit('imagesReady');\n }\n }\n\n for (let i = 0; i < swiper.imagesToLoad.length; i += 1) {\n const imageEl = swiper.imagesToLoad[i];\n swiper.loadImage(imageEl, imageEl.currentSrc || imageEl.getAttribute('src'), imageEl.srcset || imageEl.getAttribute('srcset'), imageEl.sizes || imageEl.getAttribute('sizes'), true, onReady);\n }\n}","import loopCreate from './loopCreate.js';\nimport loopFix from './loopFix.js';\nimport loopDestroy from './loopDestroy.js';\nexport default {\n loopCreate,\n loopFix,\n loopDestroy\n};","import { getDocument } from 'ssr-window';\nimport $ from '../../shared/dom.js';\nexport default function loopCreate() {\n const swiper = this;\n const document = getDocument();\n const {\n params,\n $wrapperEl\n } = swiper; // Remove duplicated slides\n\n const $selector = $wrapperEl.children().length > 0 ? $($wrapperEl.children()[0].parentNode) : $wrapperEl;\n $selector.children(`.${params.slideClass}.${params.slideDuplicateClass}`).remove();\n let slides = $selector.children(`.${params.slideClass}`);\n\n if (params.loopFillGroupWithBlank) {\n const blankSlidesNum = params.slidesPerGroup - slides.length % params.slidesPerGroup;\n\n if (blankSlidesNum !== params.slidesPerGroup) {\n for (let i = 0; i < blankSlidesNum; i += 1) {\n const blankNode = $(document.createElement('div')).addClass(`${params.slideClass} ${params.slideBlankClass}`);\n $selector.append(blankNode);\n }\n\n slides = $selector.children(`.${params.slideClass}`);\n }\n }\n\n if (params.slidesPerView === 'auto' && !params.loopedSlides) params.loopedSlides = slides.length;\n swiper.loopedSlides = Math.ceil(parseFloat(params.loopedSlides || params.slidesPerView, 10));\n swiper.loopedSlides += params.loopAdditionalSlides;\n\n if (swiper.loopedSlides > slides.length) {\n swiper.loopedSlides = slides.length;\n }\n\n const prependSlides = [];\n const appendSlides = [];\n slides.each((el, index) => {\n const slide = $(el);\n\n if (index < swiper.loopedSlides) {\n appendSlides.push(el);\n }\n\n if (index < slides.length && index >= slides.length - swiper.loopedSlides) {\n prependSlides.push(el);\n }\n\n slide.attr('data-swiper-slide-index', index);\n });\n\n for (let i = 0; i < appendSlides.length; i += 1) {\n $selector.append($(appendSlides[i].cloneNode(true)).addClass(params.slideDuplicateClass));\n }\n\n for (let i = prependSlides.length - 1; i >= 0; i -= 1) {\n $selector.prepend($(prependSlides[i].cloneNode(true)).addClass(params.slideDuplicateClass));\n }\n}","export default function loopDestroy() {\n const swiper = this;\n const {\n $wrapperEl,\n params,\n slides\n } = swiper;\n $wrapperEl.children(`.${params.slideClass}.${params.slideDuplicateClass},.${params.slideClass}.${params.slideBlankClass}`).remove();\n slides.removeAttr('data-swiper-slide-index');\n}","export default function loopFix() {\n const swiper = this;\n swiper.emit('beforeLoopFix');\n const {\n activeIndex,\n slides,\n loopedSlides,\n allowSlidePrev,\n allowSlideNext,\n snapGrid,\n rtlTranslate: rtl\n } = swiper;\n let newIndex;\n swiper.allowSlidePrev = true;\n swiper.allowSlideNext = true;\n const snapTranslate = -snapGrid[activeIndex];\n const diff = snapTranslate - swiper.getTranslate(); // Fix For Negative Oversliding\n\n if (activeIndex < loopedSlides) {\n newIndex = slides.length - loopedSlides * 3 + activeIndex;\n newIndex += loopedSlides;\n const slideChanged = swiper.slideTo(newIndex, 0, false, true);\n\n if (slideChanged && diff !== 0) {\n swiper.setTranslate((rtl ? -swiper.translate : swiper.translate) - diff);\n }\n } else if (activeIndex >= slides.length - loopedSlides) {\n // Fix For Positive Oversliding\n newIndex = -slides.length + activeIndex + loopedSlides;\n newIndex += loopedSlides;\n const slideChanged = swiper.slideTo(newIndex, 0, false, true);\n\n if (slideChanged && diff !== 0) {\n swiper.setTranslate((rtl ? -swiper.translate : swiper.translate) - diff);\n }\n }\n\n swiper.allowSlidePrev = allowSlidePrev;\n swiper.allowSlideNext = allowSlideNext;\n swiper.emit('loopFix');\n}","import { extend } from '../shared/utils.js';\nexport default function moduleExtendParams(params, allModulesParams) {\n return function extendParams(obj = {}) {\n const moduleParamName = Object.keys(obj)[0];\n const moduleParams = obj[moduleParamName];\n\n if (typeof moduleParams !== 'object' || moduleParams === null) {\n extend(allModulesParams, obj);\n return;\n }\n\n if (['navigation', 'pagination', 'scrollbar'].indexOf(moduleParamName) >= 0 && params[moduleParamName] === true) {\n params[moduleParamName] = {\n auto: true\n };\n }\n\n if (!(moduleParamName in params && 'enabled' in moduleParams)) {\n extend(allModulesParams, obj);\n return;\n }\n\n if (params[moduleParamName] === true) {\n params[moduleParamName] = {\n enabled: true\n };\n }\n\n if (typeof params[moduleParamName] === 'object' && !('enabled' in params[moduleParamName])) {\n params[moduleParamName].enabled = true;\n }\n\n if (!params[moduleParamName]) params[moduleParamName] = {\n enabled: false\n };\n extend(allModulesParams, obj);\n };\n}","import { getWindow } from 'ssr-window';\nexport default function Observer({\n swiper,\n extendParams,\n on,\n emit\n}) {\n const observers = [];\n const window = getWindow();\n\n const attach = (target, options = {}) => {\n const ObserverFunc = window.MutationObserver || window.WebkitMutationObserver;\n const observer = new ObserverFunc(mutations => {\n // The observerUpdate event should only be triggered\n // once despite the number of mutations. Additional\n // triggers are redundant and are very costly\n if (mutations.length === 1) {\n emit('observerUpdate', mutations[0]);\n return;\n }\n\n const observerUpdate = function observerUpdate() {\n emit('observerUpdate', mutations[0]);\n };\n\n if (window.requestAnimationFrame) {\n window.requestAnimationFrame(observerUpdate);\n } else {\n window.setTimeout(observerUpdate, 0);\n }\n });\n observer.observe(target, {\n attributes: typeof options.attributes === 'undefined' ? true : options.attributes,\n childList: typeof options.childList === 'undefined' ? true : options.childList,\n characterData: typeof options.characterData === 'undefined' ? true : options.characterData\n });\n observers.push(observer);\n };\n\n const init = () => {\n if (!swiper.params.observer) return;\n\n if (swiper.params.observeParents) {\n const containerParents = swiper.$el.parents();\n\n for (let i = 0; i < containerParents.length; i += 1) {\n attach(containerParents[i]);\n }\n } // Observe container\n\n\n attach(swiper.$el[0], {\n childList: swiper.params.observeSlideChildren\n }); // Observe wrapper\n\n attach(swiper.$wrapperEl[0], {\n attributes: false\n });\n };\n\n const destroy = () => {\n observers.forEach(observer => {\n observer.disconnect();\n });\n observers.splice(0, observers.length);\n };\n\n extendParams({\n observer: false,\n observeParents: false,\n observeSlideChildren: false\n });\n on('init', init);\n on('destroy', destroy);\n}","import { getWindow } from 'ssr-window';\nexport default function Resize({\n swiper,\n on,\n emit\n}) {\n const window = getWindow();\n let observer = null;\n\n const resizeHandler = () => {\n if (!swiper || swiper.destroyed || !swiper.initialized) return;\n emit('beforeResize');\n emit('resize');\n };\n\n const createObserver = () => {\n if (!swiper || swiper.destroyed || !swiper.initialized) return;\n observer = new ResizeObserver(entries => {\n const {\n width,\n height\n } = swiper;\n let newWidth = width;\n let newHeight = height;\n entries.forEach(({\n contentBoxSize,\n contentRect,\n target\n }) => {\n if (target && target !== swiper.el) return;\n newWidth = contentRect ? contentRect.width : (contentBoxSize[0] || contentBoxSize).inlineSize;\n newHeight = contentRect ? contentRect.height : (contentBoxSize[0] || contentBoxSize).blockSize;\n });\n\n if (newWidth !== width || newHeight !== height) {\n resizeHandler();\n }\n });\n observer.observe(swiper.el);\n };\n\n const removeObserver = () => {\n if (observer && observer.unobserve && swiper.el) {\n observer.unobserve(swiper.el);\n observer = null;\n }\n };\n\n const orientationChangeHandler = () => {\n if (!swiper || swiper.destroyed || !swiper.initialized) return;\n emit('orientationchange');\n };\n\n on('init', () => {\n if (swiper.params.resizeObserver && typeof window.ResizeObserver !== 'undefined') {\n createObserver();\n return;\n }\n\n window.addEventListener('resize', resizeHandler);\n window.addEventListener('orientationchange', orientationChangeHandler);\n });\n on('destroy', () => {\n removeObserver();\n window.removeEventListener('resize', resizeHandler);\n window.removeEventListener('orientationchange', orientationChangeHandler);\n });\n}","import slideTo from './slideTo.js';\nimport slideToLoop from './slideToLoop.js';\nimport slideNext from './slideNext.js';\nimport slidePrev from './slidePrev.js';\nimport slideReset from './slideReset.js';\nimport slideToClosest from './slideToClosest.js';\nimport slideToClickedSlide from './slideToClickedSlide.js';\nexport default {\n slideTo,\n slideToLoop,\n slideNext,\n slidePrev,\n slideReset,\n slideToClosest,\n slideToClickedSlide\n};","/* eslint no-unused-vars: \"off\" */\nexport default function slideNext(speed = this.params.speed, runCallbacks = true, internal) {\n const swiper = this;\n const {\n animating,\n enabled,\n params\n } = swiper;\n if (!enabled) return swiper;\n let perGroup = params.slidesPerGroup;\n\n if (params.slidesPerView === 'auto' && params.slidesPerGroup === 1 && params.slidesPerGroupAuto) {\n perGroup = Math.max(swiper.slidesPerViewDynamic('current', true), 1);\n }\n\n const increment = swiper.activeIndex < params.slidesPerGroupSkip ? 1 : perGroup;\n\n if (params.loop) {\n if (animating && params.loopPreventsSlide) return false;\n swiper.loopFix(); // eslint-disable-next-line\n\n swiper._clientLeft = swiper.$wrapperEl[0].clientLeft;\n }\n\n if (params.rewind && swiper.isEnd) {\n return swiper.slideTo(0, speed, runCallbacks, internal);\n }\n\n return swiper.slideTo(swiper.activeIndex + increment, speed, runCallbacks, internal);\n}","/* eslint no-unused-vars: \"off\" */\nexport default function slidePrev(speed = this.params.speed, runCallbacks = true, internal) {\n const swiper = this;\n const {\n params,\n animating,\n snapGrid,\n slidesGrid,\n rtlTranslate,\n enabled\n } = swiper;\n if (!enabled) return swiper;\n\n if (params.loop) {\n if (animating && params.loopPreventsSlide) return false;\n swiper.loopFix(); // eslint-disable-next-line\n\n swiper._clientLeft = swiper.$wrapperEl[0].clientLeft;\n }\n\n const translate = rtlTranslate ? swiper.translate : -swiper.translate;\n\n function normalize(val) {\n if (val < 0) return -Math.floor(Math.abs(val));\n return Math.floor(val);\n }\n\n const normalizedTranslate = normalize(translate);\n const normalizedSnapGrid = snapGrid.map(val => normalize(val));\n let prevSnap = snapGrid[normalizedSnapGrid.indexOf(normalizedTranslate) - 1];\n\n if (typeof prevSnap === 'undefined' && params.cssMode) {\n let prevSnapIndex;\n snapGrid.forEach((snap, snapIndex) => {\n if (normalizedTranslate >= snap) {\n // prevSnap = snap;\n prevSnapIndex = snapIndex;\n }\n });\n\n if (typeof prevSnapIndex !== 'undefined') {\n prevSnap = snapGrid[prevSnapIndex > 0 ? prevSnapIndex - 1 : prevSnapIndex];\n }\n }\n\n let prevIndex = 0;\n\n if (typeof prevSnap !== 'undefined') {\n prevIndex = slidesGrid.indexOf(prevSnap);\n if (prevIndex < 0) prevIndex = swiper.activeIndex - 1;\n\n if (params.slidesPerView === 'auto' && params.slidesPerGroup === 1 && params.slidesPerGroupAuto) {\n prevIndex = prevIndex - swiper.slidesPerViewDynamic('previous', true) + 1;\n prevIndex = Math.max(prevIndex, 0);\n }\n }\n\n if (params.rewind && swiper.isBeginning) {\n return swiper.slideTo(swiper.slides.length - 1, speed, runCallbacks, internal);\n }\n\n return swiper.slideTo(prevIndex, speed, runCallbacks, internal);\n}","/* eslint no-unused-vars: \"off\" */\nexport default function slideReset(speed = this.params.speed, runCallbacks = true, internal) {\n const swiper = this;\n return swiper.slideTo(swiper.activeIndex, speed, runCallbacks, internal);\n}","import { animateCSSModeScroll } from '../../shared/utils.js';\nexport default function slideTo(index = 0, speed = this.params.speed, runCallbacks = true, internal, initial) {\n if (typeof index !== 'number' && typeof index !== 'string') {\n throw new Error(`The 'index' argument cannot have type other than 'number' or 'string'. [${typeof index}] given.`);\n }\n\n if (typeof index === 'string') {\n /**\n * The `index` argument converted from `string` to `number`.\n * @type {number}\n */\n const indexAsNumber = parseInt(index, 10);\n /**\n * Determines whether the `index` argument is a valid `number`\n * after being converted from the `string` type.\n * @type {boolean}\n */\n\n const isValidNumber = isFinite(indexAsNumber);\n\n if (!isValidNumber) {\n throw new Error(`The passed-in 'index' (string) couldn't be converted to 'number'. [${index}] given.`);\n } // Knowing that the converted `index` is a valid number,\n // we can update the original argument's value.\n\n\n index = indexAsNumber;\n }\n\n const swiper = this;\n let slideIndex = index;\n if (slideIndex < 0) slideIndex = 0;\n const {\n params,\n snapGrid,\n slidesGrid,\n previousIndex,\n activeIndex,\n rtlTranslate: rtl,\n wrapperEl,\n enabled\n } = swiper;\n\n if (swiper.animating && params.preventInteractionOnTransition || !enabled && !internal && !initial) {\n return false;\n }\n\n const skip = Math.min(swiper.params.slidesPerGroupSkip, slideIndex);\n let snapIndex = skip + Math.floor((slideIndex - skip) / swiper.params.slidesPerGroup);\n if (snapIndex >= snapGrid.length) snapIndex = snapGrid.length - 1;\n\n if ((activeIndex || params.initialSlide || 0) === (previousIndex || 0) && runCallbacks) {\n swiper.emit('beforeSlideChangeStart');\n }\n\n const translate = -snapGrid[snapIndex]; // Update progress\n\n swiper.updateProgress(translate); // Normalize slideIndex\n\n if (params.normalizeSlideIndex) {\n for (let i = 0; i < slidesGrid.length; i += 1) {\n const normalizedTranslate = -Math.floor(translate * 100);\n const normalizedGrid = Math.floor(slidesGrid[i] * 100);\n const normalizedGridNext = Math.floor(slidesGrid[i + 1] * 100);\n\n if (typeof slidesGrid[i + 1] !== 'undefined') {\n if (normalizedTranslate >= normalizedGrid && normalizedTranslate < normalizedGridNext - (normalizedGridNext - normalizedGrid) / 2) {\n slideIndex = i;\n } else if (normalizedTranslate >= normalizedGrid && normalizedTranslate < normalizedGridNext) {\n slideIndex = i + 1;\n }\n } else if (normalizedTranslate >= normalizedGrid) {\n slideIndex = i;\n }\n }\n } // Directions locks\n\n\n if (swiper.initialized && slideIndex !== activeIndex) {\n if (!swiper.allowSlideNext && translate < swiper.translate && translate < swiper.minTranslate()) {\n return false;\n }\n\n if (!swiper.allowSlidePrev && translate > swiper.translate && translate > swiper.maxTranslate()) {\n if ((activeIndex || 0) !== slideIndex) return false;\n }\n }\n\n let direction;\n if (slideIndex > activeIndex) direction = 'next';else if (slideIndex < activeIndex) direction = 'prev';else direction = 'reset'; // Update Index\n\n if (rtl && -translate === swiper.translate || !rtl && translate === swiper.translate) {\n swiper.updateActiveIndex(slideIndex); // Update Height\n\n if (params.autoHeight) {\n swiper.updateAutoHeight();\n }\n\n swiper.updateSlidesClasses();\n\n if (params.effect !== 'slide') {\n swiper.setTranslate(translate);\n }\n\n if (direction !== 'reset') {\n swiper.transitionStart(runCallbacks, direction);\n swiper.transitionEnd(runCallbacks, direction);\n }\n\n return false;\n }\n\n if (params.cssMode) {\n const isH = swiper.isHorizontal();\n const t = rtl ? translate : -translate;\n\n if (speed === 0) {\n const isVirtual = swiper.virtual && swiper.params.virtual.enabled;\n\n if (isVirtual) {\n swiper.wrapperEl.style.scrollSnapType = 'none';\n swiper._immediateVirtual = true;\n }\n\n wrapperEl[isH ? 'scrollLeft' : 'scrollTop'] = t;\n\n if (isVirtual) {\n requestAnimationFrame(() => {\n swiper.wrapperEl.style.scrollSnapType = '';\n swiper._swiperImmediateVirtual = false;\n });\n }\n } else {\n if (!swiper.support.smoothScroll) {\n animateCSSModeScroll({\n swiper,\n targetPosition: t,\n side: isH ? 'left' : 'top'\n });\n return true;\n }\n\n wrapperEl.scrollTo({\n [isH ? 'left' : 'top']: t,\n behavior: 'smooth'\n });\n }\n\n return true;\n }\n\n swiper.setTransition(speed);\n swiper.setTranslate(translate);\n swiper.updateActiveIndex(slideIndex);\n swiper.updateSlidesClasses();\n swiper.emit('beforeTransitionStart', speed, internal);\n swiper.transitionStart(runCallbacks, direction);\n\n if (speed === 0) {\n swiper.transitionEnd(runCallbacks, direction);\n } else if (!swiper.animating) {\n swiper.animating = true;\n\n if (!swiper.onSlideToWrapperTransitionEnd) {\n swiper.onSlideToWrapperTransitionEnd = function transitionEnd(e) {\n if (!swiper || swiper.destroyed) return;\n if (e.target !== this) return;\n swiper.$wrapperEl[0].removeEventListener('transitionend', swiper.onSlideToWrapperTransitionEnd);\n swiper.$wrapperEl[0].removeEventListener('webkitTransitionEnd', swiper.onSlideToWrapperTransitionEnd);\n swiper.onSlideToWrapperTransitionEnd = null;\n delete swiper.onSlideToWrapperTransitionEnd;\n swiper.transitionEnd(runCallbacks, direction);\n };\n }\n\n swiper.$wrapperEl[0].addEventListener('transitionend', swiper.onSlideToWrapperTransitionEnd);\n swiper.$wrapperEl[0].addEventListener('webkitTransitionEnd', swiper.onSlideToWrapperTransitionEnd);\n }\n\n return true;\n}","import $ from '../../shared/dom.js';\nimport { nextTick } from '../../shared/utils.js';\nexport default function slideToClickedSlide() {\n const swiper = this;\n const {\n params,\n $wrapperEl\n } = swiper;\n const slidesPerView = params.slidesPerView === 'auto' ? swiper.slidesPerViewDynamic() : params.slidesPerView;\n let slideToIndex = swiper.clickedIndex;\n let realIndex;\n\n if (params.loop) {\n if (swiper.animating) return;\n realIndex = parseInt($(swiper.clickedSlide).attr('data-swiper-slide-index'), 10);\n\n if (params.centeredSlides) {\n if (slideToIndex < swiper.loopedSlides - slidesPerView / 2 || slideToIndex > swiper.slides.length - swiper.loopedSlides + slidesPerView / 2) {\n swiper.loopFix();\n slideToIndex = $wrapperEl.children(`.${params.slideClass}[data-swiper-slide-index=\"${realIndex}\"]:not(.${params.slideDuplicateClass})`).eq(0).index();\n nextTick(() => {\n swiper.slideTo(slideToIndex);\n });\n } else {\n swiper.slideTo(slideToIndex);\n }\n } else if (slideToIndex > swiper.slides.length - slidesPerView) {\n swiper.loopFix();\n slideToIndex = $wrapperEl.children(`.${params.slideClass}[data-swiper-slide-index=\"${realIndex}\"]:not(.${params.slideDuplicateClass})`).eq(0).index();\n nextTick(() => {\n swiper.slideTo(slideToIndex);\n });\n } else {\n swiper.slideTo(slideToIndex);\n }\n } else {\n swiper.slideTo(slideToIndex);\n }\n}","/* eslint no-unused-vars: \"off\" */\nexport default function slideToClosest(speed = this.params.speed, runCallbacks = true, internal, threshold = 0.5) {\n const swiper = this;\n let index = swiper.activeIndex;\n const skip = Math.min(swiper.params.slidesPerGroupSkip, index);\n const snapIndex = skip + Math.floor((index - skip) / swiper.params.slidesPerGroup);\n const translate = swiper.rtlTranslate ? swiper.translate : -swiper.translate;\n\n if (translate >= swiper.snapGrid[snapIndex]) {\n // The current translate is on or after the current snap index, so the choice\n // is between the current index and the one after it.\n const currentSnap = swiper.snapGrid[snapIndex];\n const nextSnap = swiper.snapGrid[snapIndex + 1];\n\n if (translate - currentSnap > (nextSnap - currentSnap) * threshold) {\n index += swiper.params.slidesPerGroup;\n }\n } else {\n // The current translate is before the current snap index, so the choice\n // is between the current index and the one before it.\n const prevSnap = swiper.snapGrid[snapIndex - 1];\n const currentSnap = swiper.snapGrid[snapIndex];\n\n if (translate - prevSnap <= (currentSnap - prevSnap) * threshold) {\n index -= swiper.params.slidesPerGroup;\n }\n }\n\n index = Math.max(index, 0);\n index = Math.min(index, swiper.slidesGrid.length - 1);\n return swiper.slideTo(index, speed, runCallbacks, internal);\n}","export default function slideToLoop(index = 0, speed = this.params.speed, runCallbacks = true, internal) {\n const swiper = this;\n let newIndex = index;\n\n if (swiper.params.loop) {\n newIndex += swiper.loopedSlides;\n }\n\n return swiper.slideTo(newIndex, speed, runCallbacks, internal);\n}","import setTransition from './setTransition.js';\nimport transitionStart from './transitionStart.js';\nimport transitionEnd from './transitionEnd.js';\nexport default {\n setTransition,\n transitionStart,\n transitionEnd\n};","export default function setTransition(duration, byController) {\n const swiper = this;\n\n if (!swiper.params.cssMode) {\n swiper.$wrapperEl.transition(duration);\n }\n\n swiper.emit('setTransition', duration, byController);\n}","export default function transitionEmit({\n swiper,\n runCallbacks,\n direction,\n step\n}) {\n const {\n activeIndex,\n previousIndex\n } = swiper;\n let dir = direction;\n\n if (!dir) {\n if (activeIndex > previousIndex) dir = 'next';else if (activeIndex < previousIndex) dir = 'prev';else dir = 'reset';\n }\n\n swiper.emit(`transition${step}`);\n\n if (runCallbacks && activeIndex !== previousIndex) {\n if (dir === 'reset') {\n swiper.emit(`slideResetTransition${step}`);\n return;\n }\n\n swiper.emit(`slideChangeTransition${step}`);\n\n if (dir === 'next') {\n swiper.emit(`slideNextTransition${step}`);\n } else {\n swiper.emit(`slidePrevTransition${step}`);\n }\n }\n}","import transitionEmit from './transitionEmit.js';\nexport default function transitionEnd(runCallbacks = true, direction) {\n const swiper = this;\n const {\n params\n } = swiper;\n swiper.animating = false;\n if (params.cssMode) return;\n swiper.setTransition(0);\n transitionEmit({\n swiper,\n runCallbacks,\n direction,\n step: 'End'\n });\n}","import transitionEmit from './transitionEmit.js';\nexport default function transitionStart(runCallbacks = true, direction) {\n const swiper = this;\n const {\n params\n } = swiper;\n if (params.cssMode) return;\n\n if (params.autoHeight) {\n swiper.updateAutoHeight();\n }\n\n transitionEmit({\n swiper,\n runCallbacks,\n direction,\n step: 'Start'\n });\n}","import { getTranslate } from '../../shared/utils.js';\nexport default function getSwiperTranslate(axis = this.isHorizontal() ? 'x' : 'y') {\n const swiper = this;\n const {\n params,\n rtlTranslate: rtl,\n translate,\n $wrapperEl\n } = swiper;\n\n if (params.virtualTranslate) {\n return rtl ? -translate : translate;\n }\n\n if (params.cssMode) {\n return translate;\n }\n\n let currentTranslate = getTranslate($wrapperEl[0], axis);\n if (rtl) currentTranslate = -currentTranslate;\n return currentTranslate || 0;\n}","import getTranslate from './getTranslate.js';\nimport setTranslate from './setTranslate.js';\nimport minTranslate from './minTranslate.js';\nimport maxTranslate from './maxTranslate.js';\nimport translateTo from './translateTo.js';\nexport default {\n getTranslate,\n setTranslate,\n minTranslate,\n maxTranslate,\n translateTo\n};","export default function maxTranslate() {\n return -this.snapGrid[this.snapGrid.length - 1];\n}","export default function minTranslate() {\n return -this.snapGrid[0];\n}","export default function setTranslate(translate, byController) {\n const swiper = this;\n const {\n rtlTranslate: rtl,\n params,\n $wrapperEl,\n wrapperEl,\n progress\n } = swiper;\n let x = 0;\n let y = 0;\n const z = 0;\n\n if (swiper.isHorizontal()) {\n x = rtl ? -translate : translate;\n } else {\n y = translate;\n }\n\n if (params.roundLengths) {\n x = Math.floor(x);\n y = Math.floor(y);\n }\n\n if (params.cssMode) {\n wrapperEl[swiper.isHorizontal() ? 'scrollLeft' : 'scrollTop'] = swiper.isHorizontal() ? -x : -y;\n } else if (!params.virtualTranslate) {\n $wrapperEl.transform(`translate3d(${x}px, ${y}px, ${z}px)`);\n }\n\n swiper.previousTranslate = swiper.translate;\n swiper.translate = swiper.isHorizontal() ? x : y; // Check if we need to update progress\n\n let newProgress;\n const translatesDiff = swiper.maxTranslate() - swiper.minTranslate();\n\n if (translatesDiff === 0) {\n newProgress = 0;\n } else {\n newProgress = (translate - swiper.minTranslate()) / translatesDiff;\n }\n\n if (newProgress !== progress) {\n swiper.updateProgress(translate);\n }\n\n swiper.emit('setTranslate', swiper.translate, byController);\n}","import { animateCSSModeScroll } from '../../shared/utils.js';\nexport default function translateTo(translate = 0, speed = this.params.speed, runCallbacks = true, translateBounds = true, internal) {\n const swiper = this;\n const {\n params,\n wrapperEl\n } = swiper;\n\n if (swiper.animating && params.preventInteractionOnTransition) {\n return false;\n }\n\n const minTranslate = swiper.minTranslate();\n const maxTranslate = swiper.maxTranslate();\n let newTranslate;\n if (translateBounds && translate > minTranslate) newTranslate = minTranslate;else if (translateBounds && translate < maxTranslate) newTranslate = maxTranslate;else newTranslate = translate; // Update progress\n\n swiper.updateProgress(newTranslate);\n\n if (params.cssMode) {\n const isH = swiper.isHorizontal();\n\n if (speed === 0) {\n wrapperEl[isH ? 'scrollLeft' : 'scrollTop'] = -newTranslate;\n } else {\n if (!swiper.support.smoothScroll) {\n animateCSSModeScroll({\n swiper,\n targetPosition: -newTranslate,\n side: isH ? 'left' : 'top'\n });\n return true;\n }\n\n wrapperEl.scrollTo({\n [isH ? 'left' : 'top']: -newTranslate,\n behavior: 'smooth'\n });\n }\n\n return true;\n }\n\n if (speed === 0) {\n swiper.setTransition(0);\n swiper.setTranslate(newTranslate);\n\n if (runCallbacks) {\n swiper.emit('beforeTransitionStart', speed, internal);\n swiper.emit('transitionEnd');\n }\n } else {\n swiper.setTransition(speed);\n swiper.setTranslate(newTranslate);\n\n if (runCallbacks) {\n swiper.emit('beforeTransitionStart', speed, internal);\n swiper.emit('transitionStart');\n }\n\n if (!swiper.animating) {\n swiper.animating = true;\n\n if (!swiper.onTranslateToWrapperTransitionEnd) {\n swiper.onTranslateToWrapperTransitionEnd = function transitionEnd(e) {\n if (!swiper || swiper.destroyed) return;\n if (e.target !== this) return;\n swiper.$wrapperEl[0].removeEventListener('transitionend', swiper.onTranslateToWrapperTransitionEnd);\n swiper.$wrapperEl[0].removeEventListener('webkitTransitionEnd', swiper.onTranslateToWrapperTransitionEnd);\n swiper.onTranslateToWrapperTransitionEnd = null;\n delete swiper.onTranslateToWrapperTransitionEnd;\n\n if (runCallbacks) {\n swiper.emit('transitionEnd');\n }\n };\n }\n\n swiper.$wrapperEl[0].addEventListener('transitionend', swiper.onTranslateToWrapperTransitionEnd);\n swiper.$wrapperEl[0].addEventListener('webkitTransitionEnd', swiper.onTranslateToWrapperTransitionEnd);\n }\n }\n\n return true;\n}","import updateSize from './updateSize.js';\nimport updateSlides from './updateSlides.js';\nimport updateAutoHeight from './updateAutoHeight.js';\nimport updateSlidesOffset from './updateSlidesOffset.js';\nimport updateSlidesProgress from './updateSlidesProgress.js';\nimport updateProgress from './updateProgress.js';\nimport updateSlidesClasses from './updateSlidesClasses.js';\nimport updateActiveIndex from './updateActiveIndex.js';\nimport updateClickedSlide from './updateClickedSlide.js';\nexport default {\n updateSize,\n updateSlides,\n updateAutoHeight,\n updateSlidesOffset,\n updateSlidesProgress,\n updateProgress,\n updateSlidesClasses,\n updateActiveIndex,\n updateClickedSlide\n};","export default function updateActiveIndex(newActiveIndex) {\n const swiper = this;\n const translate = swiper.rtlTranslate ? swiper.translate : -swiper.translate;\n const {\n slidesGrid,\n snapGrid,\n params,\n activeIndex: previousIndex,\n realIndex: previousRealIndex,\n snapIndex: previousSnapIndex\n } = swiper;\n let activeIndex = newActiveIndex;\n let snapIndex;\n\n if (typeof activeIndex === 'undefined') {\n for (let i = 0; i < slidesGrid.length; i += 1) {\n if (typeof slidesGrid[i + 1] !== 'undefined') {\n if (translate >= slidesGrid[i] && translate < slidesGrid[i + 1] - (slidesGrid[i + 1] - slidesGrid[i]) / 2) {\n activeIndex = i;\n } else if (translate >= slidesGrid[i] && translate < slidesGrid[i + 1]) {\n activeIndex = i + 1;\n }\n } else if (translate >= slidesGrid[i]) {\n activeIndex = i;\n }\n } // Normalize slideIndex\n\n\n if (params.normalizeSlideIndex) {\n if (activeIndex < 0 || typeof activeIndex === 'undefined') activeIndex = 0;\n }\n }\n\n if (snapGrid.indexOf(translate) >= 0) {\n snapIndex = snapGrid.indexOf(translate);\n } else {\n const skip = Math.min(params.slidesPerGroupSkip, activeIndex);\n snapIndex = skip + Math.floor((activeIndex - skip) / params.slidesPerGroup);\n }\n\n if (snapIndex >= snapGrid.length) snapIndex = snapGrid.length - 1;\n\n if (activeIndex === previousIndex) {\n if (snapIndex !== previousSnapIndex) {\n swiper.snapIndex = snapIndex;\n swiper.emit('snapIndexChange');\n }\n\n return;\n } // Get real index\n\n\n const realIndex = parseInt(swiper.slides.eq(activeIndex).attr('data-swiper-slide-index') || activeIndex, 10);\n Object.assign(swiper, {\n snapIndex,\n realIndex,\n previousIndex,\n activeIndex\n });\n swiper.emit('activeIndexChange');\n swiper.emit('snapIndexChange');\n\n if (previousRealIndex !== realIndex) {\n swiper.emit('realIndexChange');\n }\n\n if (swiper.initialized || swiper.params.runCallbacksOnInit) {\n swiper.emit('slideChange');\n }\n}","export default function updateAutoHeight(speed) {\n const swiper = this;\n const activeSlides = [];\n const isVirtual = swiper.virtual && swiper.params.virtual.enabled;\n let newHeight = 0;\n let i;\n\n if (typeof speed === 'number') {\n swiper.setTransition(speed);\n } else if (speed === true) {\n swiper.setTransition(swiper.params.speed);\n }\n\n const getSlideByIndex = index => {\n if (isVirtual) {\n return swiper.slides.filter(el => parseInt(el.getAttribute('data-swiper-slide-index'), 10) === index)[0];\n }\n\n return swiper.slides.eq(index)[0];\n }; // Find slides currently in view\n\n\n if (swiper.params.slidesPerView !== 'auto' && swiper.params.slidesPerView > 1) {\n if (swiper.params.centeredSlides) {\n swiper.visibleSlides.each(slide => {\n activeSlides.push(slide);\n });\n } else {\n for (i = 0; i < Math.ceil(swiper.params.slidesPerView); i += 1) {\n const index = swiper.activeIndex + i;\n if (index > swiper.slides.length && !isVirtual) break;\n activeSlides.push(getSlideByIndex(index));\n }\n }\n } else {\n activeSlides.push(getSlideByIndex(swiper.activeIndex));\n } // Find new height from highest slide in view\n\n\n for (i = 0; i < activeSlides.length; i += 1) {\n if (typeof activeSlides[i] !== 'undefined') {\n const height = activeSlides[i].offsetHeight;\n newHeight = height > newHeight ? height : newHeight;\n }\n } // Update Height\n\n\n if (newHeight || newHeight === 0) swiper.$wrapperEl.css('height', `${newHeight}px`);\n}","import $ from '../../shared/dom.js';\nexport default function updateClickedSlide(e) {\n const swiper = this;\n const params = swiper.params;\n const slide = $(e).closest(`.${params.slideClass}`)[0];\n let slideFound = false;\n let slideIndex;\n\n if (slide) {\n for (let i = 0; i < swiper.slides.length; i += 1) {\n if (swiper.slides[i] === slide) {\n slideFound = true;\n slideIndex = i;\n break;\n }\n }\n }\n\n if (slide && slideFound) {\n swiper.clickedSlide = slide;\n\n if (swiper.virtual && swiper.params.virtual.enabled) {\n swiper.clickedIndex = parseInt($(slide).attr('data-swiper-slide-index'), 10);\n } else {\n swiper.clickedIndex = slideIndex;\n }\n } else {\n swiper.clickedSlide = undefined;\n swiper.clickedIndex = undefined;\n return;\n }\n\n if (params.slideToClickedSlide && swiper.clickedIndex !== undefined && swiper.clickedIndex !== swiper.activeIndex) {\n swiper.slideToClickedSlide();\n }\n}","export default function updateProgress(translate) {\n const swiper = this;\n\n if (typeof translate === 'undefined') {\n const multiplier = swiper.rtlTranslate ? -1 : 1; // eslint-disable-next-line\n\n translate = swiper && swiper.translate && swiper.translate * multiplier || 0;\n }\n\n const params = swiper.params;\n const translatesDiff = swiper.maxTranslate() - swiper.minTranslate();\n let {\n progress,\n isBeginning,\n isEnd\n } = swiper;\n const wasBeginning = isBeginning;\n const wasEnd = isEnd;\n\n if (translatesDiff === 0) {\n progress = 0;\n isBeginning = true;\n isEnd = true;\n } else {\n progress = (translate - swiper.minTranslate()) / translatesDiff;\n isBeginning = progress <= 0;\n isEnd = progress >= 1;\n }\n\n Object.assign(swiper, {\n progress,\n isBeginning,\n isEnd\n });\n if (params.watchSlidesProgress || params.centeredSlides && params.autoHeight) swiper.updateSlidesProgress(translate);\n\n if (isBeginning && !wasBeginning) {\n swiper.emit('reachBeginning toEdge');\n }\n\n if (isEnd && !wasEnd) {\n swiper.emit('reachEnd toEdge');\n }\n\n if (wasBeginning && !isBeginning || wasEnd && !isEnd) {\n swiper.emit('fromEdge');\n }\n\n swiper.emit('progress', progress);\n}","export default function updateSize() {\n const swiper = this;\n let width;\n let height;\n const $el = swiper.$el;\n\n if (typeof swiper.params.width !== 'undefined' && swiper.params.width !== null) {\n width = swiper.params.width;\n } else {\n width = $el[0].clientWidth;\n }\n\n if (typeof swiper.params.height !== 'undefined' && swiper.params.height !== null) {\n height = swiper.params.height;\n } else {\n height = $el[0].clientHeight;\n }\n\n if (width === 0 && swiper.isHorizontal() || height === 0 && swiper.isVertical()) {\n return;\n } // Subtract paddings\n\n\n width = width - parseInt($el.css('padding-left') || 0, 10) - parseInt($el.css('padding-right') || 0, 10);\n height = height - parseInt($el.css('padding-top') || 0, 10) - parseInt($el.css('padding-bottom') || 0, 10);\n if (Number.isNaN(width)) width = 0;\n if (Number.isNaN(height)) height = 0;\n Object.assign(swiper, {\n width,\n height,\n size: swiper.isHorizontal() ? width : height\n });\n}","import { setCSSProperty } from '../../shared/utils.js';\nexport default function updateSlides() {\n const swiper = this;\n\n function getDirectionLabel(property) {\n if (swiper.isHorizontal()) {\n return property;\n } // prettier-ignore\n\n\n return {\n 'width': 'height',\n 'margin-top': 'margin-left',\n 'margin-bottom ': 'margin-right',\n 'margin-left': 'margin-top',\n 'margin-right': 'margin-bottom',\n 'padding-left': 'padding-top',\n 'padding-right': 'padding-bottom',\n 'marginRight': 'marginBottom'\n }[property];\n }\n\n function getDirectionPropertyValue(node, label) {\n return parseFloat(node.getPropertyValue(getDirectionLabel(label)) || 0);\n }\n\n const params = swiper.params;\n const {\n $wrapperEl,\n size: swiperSize,\n rtlTranslate: rtl,\n wrongRTL\n } = swiper;\n const isVirtual = swiper.virtual && params.virtual.enabled;\n const previousSlidesLength = isVirtual ? swiper.virtual.slides.length : swiper.slides.length;\n const slides = $wrapperEl.children(`.${swiper.params.slideClass}`);\n const slidesLength = isVirtual ? swiper.virtual.slides.length : slides.length;\n let snapGrid = [];\n const slidesGrid = [];\n const slidesSizesGrid = [];\n let offsetBefore = params.slidesOffsetBefore;\n\n if (typeof offsetBefore === 'function') {\n offsetBefore = params.slidesOffsetBefore.call(swiper);\n }\n\n let offsetAfter = params.slidesOffsetAfter;\n\n if (typeof offsetAfter === 'function') {\n offsetAfter = params.slidesOffsetAfter.call(swiper);\n }\n\n const previousSnapGridLength = swiper.snapGrid.length;\n const previousSlidesGridLength = swiper.slidesGrid.length;\n let spaceBetween = params.spaceBetween;\n let slidePosition = -offsetBefore;\n let prevSlideSize = 0;\n let index = 0;\n\n if (typeof swiperSize === 'undefined') {\n return;\n }\n\n if (typeof spaceBetween === 'string' && spaceBetween.indexOf('%') >= 0) {\n spaceBetween = parseFloat(spaceBetween.replace('%', '')) / 100 * swiperSize;\n }\n\n swiper.virtualSize = -spaceBetween; // reset margins\n\n if (rtl) slides.css({\n marginLeft: '',\n marginBottom: '',\n marginTop: ''\n });else slides.css({\n marginRight: '',\n marginBottom: '',\n marginTop: ''\n }); // reset cssMode offsets\n\n if (params.centeredSlides && params.cssMode) {\n setCSSProperty(swiper.wrapperEl, '--swiper-centered-offset-before', '');\n setCSSProperty(swiper.wrapperEl, '--swiper-centered-offset-after', '');\n }\n\n const gridEnabled = params.grid && params.grid.rows > 1 && swiper.grid;\n\n if (gridEnabled) {\n swiper.grid.initSlides(slidesLength);\n } // Calc slides\n\n\n let slideSize;\n const shouldResetSlideSize = params.slidesPerView === 'auto' && params.breakpoints && Object.keys(params.breakpoints).filter(key => {\n return typeof params.breakpoints[key].slidesPerView !== 'undefined';\n }).length > 0;\n\n for (let i = 0; i < slidesLength; i += 1) {\n slideSize = 0;\n const slide = slides.eq(i);\n\n if (gridEnabled) {\n swiper.grid.updateSlide(i, slide, slidesLength, getDirectionLabel);\n }\n\n if (slide.css('display') === 'none') continue; // eslint-disable-line\n\n if (params.slidesPerView === 'auto') {\n if (shouldResetSlideSize) {\n slides[i].style[getDirectionLabel('width')] = ``;\n }\n\n const slideStyles = getComputedStyle(slide[0]);\n const currentTransform = slide[0].style.transform;\n const currentWebKitTransform = slide[0].style.webkitTransform;\n\n if (currentTransform) {\n slide[0].style.transform = 'none';\n }\n\n if (currentWebKitTransform) {\n slide[0].style.webkitTransform = 'none';\n }\n\n if (params.roundLengths) {\n slideSize = swiper.isHorizontal() ? slide.outerWidth(true) : slide.outerHeight(true);\n } else {\n // eslint-disable-next-line\n const width = getDirectionPropertyValue(slideStyles, 'width');\n const paddingLeft = getDirectionPropertyValue(slideStyles, 'padding-left');\n const paddingRight = getDirectionPropertyValue(slideStyles, 'padding-right');\n const marginLeft = getDirectionPropertyValue(slideStyles, 'margin-left');\n const marginRight = getDirectionPropertyValue(slideStyles, 'margin-right');\n const boxSizing = slideStyles.getPropertyValue('box-sizing');\n\n if (boxSizing && boxSizing === 'border-box') {\n slideSize = width + marginLeft + marginRight;\n } else {\n const {\n clientWidth,\n offsetWidth\n } = slide[0];\n slideSize = width + paddingLeft + paddingRight + marginLeft + marginRight + (offsetWidth - clientWidth);\n }\n }\n\n if (currentTransform) {\n slide[0].style.transform = currentTransform;\n }\n\n if (currentWebKitTransform) {\n slide[0].style.webkitTransform = currentWebKitTransform;\n }\n\n if (params.roundLengths) slideSize = Math.floor(slideSize);\n } else {\n slideSize = (swiperSize - (params.slidesPerView - 1) * spaceBetween) / params.slidesPerView;\n if (params.roundLengths) slideSize = Math.floor(slideSize);\n\n if (slides[i]) {\n slides[i].style[getDirectionLabel('width')] = `${slideSize}px`;\n }\n }\n\n if (slides[i]) {\n slides[i].swiperSlideSize = slideSize;\n }\n\n slidesSizesGrid.push(slideSize);\n\n if (params.centeredSlides) {\n slidePosition = slidePosition + slideSize / 2 + prevSlideSize / 2 + spaceBetween;\n if (prevSlideSize === 0 && i !== 0) slidePosition = slidePosition - swiperSize / 2 - spaceBetween;\n if (i === 0) slidePosition = slidePosition - swiperSize / 2 - spaceBetween;\n if (Math.abs(slidePosition) < 1 / 1000) slidePosition = 0;\n if (params.roundLengths) slidePosition = Math.floor(slidePosition);\n if (index % params.slidesPerGroup === 0) snapGrid.push(slidePosition);\n slidesGrid.push(slidePosition);\n } else {\n if (params.roundLengths) slidePosition = Math.floor(slidePosition);\n if ((index - Math.min(swiper.params.slidesPerGroupSkip, index)) % swiper.params.slidesPerGroup === 0) snapGrid.push(slidePosition);\n slidesGrid.push(slidePosition);\n slidePosition = slidePosition + slideSize + spaceBetween;\n }\n\n swiper.virtualSize += slideSize + spaceBetween;\n prevSlideSize = slideSize;\n index += 1;\n }\n\n swiper.virtualSize = Math.max(swiper.virtualSize, swiperSize) + offsetAfter;\n\n if (rtl && wrongRTL && (params.effect === 'slide' || params.effect === 'coverflow')) {\n $wrapperEl.css({\n width: `${swiper.virtualSize + params.spaceBetween}px`\n });\n }\n\n if (params.setWrapperSize) {\n $wrapperEl.css({\n [getDirectionLabel('width')]: `${swiper.virtualSize + params.spaceBetween}px`\n });\n }\n\n if (gridEnabled) {\n swiper.grid.updateWrapperSize(slideSize, snapGrid, getDirectionLabel);\n } // Remove last grid elements depending on width\n\n\n if (!params.centeredSlides) {\n const newSlidesGrid = [];\n\n for (let i = 0; i < snapGrid.length; i += 1) {\n let slidesGridItem = snapGrid[i];\n if (params.roundLengths) slidesGridItem = Math.floor(slidesGridItem);\n\n if (snapGrid[i] <= swiper.virtualSize - swiperSize) {\n newSlidesGrid.push(slidesGridItem);\n }\n }\n\n snapGrid = newSlidesGrid;\n\n if (Math.floor(swiper.virtualSize - swiperSize) - Math.floor(snapGrid[snapGrid.length - 1]) > 1) {\n snapGrid.push(swiper.virtualSize - swiperSize);\n }\n }\n\n if (snapGrid.length === 0) snapGrid = [0];\n\n if (params.spaceBetween !== 0) {\n const key = swiper.isHorizontal() && rtl ? 'marginLeft' : getDirectionLabel('marginRight');\n slides.filter((_, slideIndex) => {\n if (!params.cssMode) return true;\n\n if (slideIndex === slides.length - 1) {\n return false;\n }\n\n return true;\n }).css({\n [key]: `${spaceBetween}px`\n });\n }\n\n if (params.centeredSlides && params.centeredSlidesBounds) {\n let allSlidesSize = 0;\n slidesSizesGrid.forEach(slideSizeValue => {\n allSlidesSize += slideSizeValue + (params.spaceBetween ? params.spaceBetween : 0);\n });\n allSlidesSize -= params.spaceBetween;\n const maxSnap = allSlidesSize - swiperSize;\n snapGrid = snapGrid.map(snap => {\n if (snap < 0) return -offsetBefore;\n if (snap > maxSnap) return maxSnap + offsetAfter;\n return snap;\n });\n }\n\n if (params.centerInsufficientSlides) {\n let allSlidesSize = 0;\n slidesSizesGrid.forEach(slideSizeValue => {\n allSlidesSize += slideSizeValue + (params.spaceBetween ? params.spaceBetween : 0);\n });\n allSlidesSize -= params.spaceBetween;\n\n if (allSlidesSize < swiperSize) {\n const allSlidesOffset = (swiperSize - allSlidesSize) / 2;\n snapGrid.forEach((snap, snapIndex) => {\n snapGrid[snapIndex] = snap - allSlidesOffset;\n });\n slidesGrid.forEach((snap, snapIndex) => {\n slidesGrid[snapIndex] = snap + allSlidesOffset;\n });\n }\n }\n\n Object.assign(swiper, {\n slides,\n snapGrid,\n slidesGrid,\n slidesSizesGrid\n });\n\n if (params.centeredSlides && params.cssMode && !params.centeredSlidesBounds) {\n setCSSProperty(swiper.wrapperEl, '--swiper-centered-offset-before', `${-snapGrid[0]}px`);\n setCSSProperty(swiper.wrapperEl, '--swiper-centered-offset-after', `${swiper.size / 2 - slidesSizesGrid[slidesSizesGrid.length - 1] / 2}px`);\n const addToSnapGrid = -swiper.snapGrid[0];\n const addToSlidesGrid = -swiper.slidesGrid[0];\n swiper.snapGrid = swiper.snapGrid.map(v => v + addToSnapGrid);\n swiper.slidesGrid = swiper.slidesGrid.map(v => v + addToSlidesGrid);\n }\n\n if (slidesLength !== previousSlidesLength) {\n swiper.emit('slidesLengthChange');\n }\n\n if (snapGrid.length !== previousSnapGridLength) {\n if (swiper.params.watchOverflow) swiper.checkOverflow();\n swiper.emit('snapGridLengthChange');\n }\n\n if (slidesGrid.length !== previousSlidesGridLength) {\n swiper.emit('slidesGridLengthChange');\n }\n\n if (params.watchSlidesProgress) {\n swiper.updateSlidesOffset();\n }\n}","export default function updateSlidesClasses() {\n const swiper = this;\n const {\n slides,\n params,\n $wrapperEl,\n activeIndex,\n realIndex\n } = swiper;\n const isVirtual = swiper.virtual && params.virtual.enabled;\n slides.removeClass(`${params.slideActiveClass} ${params.slideNextClass} ${params.slidePrevClass} ${params.slideDuplicateActiveClass} ${params.slideDuplicateNextClass} ${params.slideDuplicatePrevClass}`);\n let activeSlide;\n\n if (isVirtual) {\n activeSlide = swiper.$wrapperEl.find(`.${params.slideClass}[data-swiper-slide-index=\"${activeIndex}\"]`);\n } else {\n activeSlide = slides.eq(activeIndex);\n } // Active classes\n\n\n activeSlide.addClass(params.slideActiveClass);\n\n if (params.loop) {\n // Duplicate to all looped slides\n if (activeSlide.hasClass(params.slideDuplicateClass)) {\n $wrapperEl.children(`.${params.slideClass}:not(.${params.slideDuplicateClass})[data-swiper-slide-index=\"${realIndex}\"]`).addClass(params.slideDuplicateActiveClass);\n } else {\n $wrapperEl.children(`.${params.slideClass}.${params.slideDuplicateClass}[data-swiper-slide-index=\"${realIndex}\"]`).addClass(params.slideDuplicateActiveClass);\n }\n } // Next Slide\n\n\n let nextSlide = activeSlide.nextAll(`.${params.slideClass}`).eq(0).addClass(params.slideNextClass);\n\n if (params.loop && nextSlide.length === 0) {\n nextSlide = slides.eq(0);\n nextSlide.addClass(params.slideNextClass);\n } // Prev Slide\n\n\n let prevSlide = activeSlide.prevAll(`.${params.slideClass}`).eq(0).addClass(params.slidePrevClass);\n\n if (params.loop && prevSlide.length === 0) {\n prevSlide = slides.eq(-1);\n prevSlide.addClass(params.slidePrevClass);\n }\n\n if (params.loop) {\n // Duplicate to all looped slides\n if (nextSlide.hasClass(params.slideDuplicateClass)) {\n $wrapperEl.children(`.${params.slideClass}:not(.${params.slideDuplicateClass})[data-swiper-slide-index=\"${nextSlide.attr('data-swiper-slide-index')}\"]`).addClass(params.slideDuplicateNextClass);\n } else {\n $wrapperEl.children(`.${params.slideClass}.${params.slideDuplicateClass}[data-swiper-slide-index=\"${nextSlide.attr('data-swiper-slide-index')}\"]`).addClass(params.slideDuplicateNextClass);\n }\n\n if (prevSlide.hasClass(params.slideDuplicateClass)) {\n $wrapperEl.children(`.${params.slideClass}:not(.${params.slideDuplicateClass})[data-swiper-slide-index=\"${prevSlide.attr('data-swiper-slide-index')}\"]`).addClass(params.slideDuplicatePrevClass);\n } else {\n $wrapperEl.children(`.${params.slideClass}.${params.slideDuplicateClass}[data-swiper-slide-index=\"${prevSlide.attr('data-swiper-slide-index')}\"]`).addClass(params.slideDuplicatePrevClass);\n }\n }\n\n swiper.emitSlidesClasses();\n}","export default function updateSlidesOffset() {\n const swiper = this;\n const slides = swiper.slides;\n\n for (let i = 0; i < slides.length; i += 1) {\n slides[i].swiperSlideOffset = swiper.isHorizontal() ? slides[i].offsetLeft : slides[i].offsetTop;\n }\n}","import $ from '../../shared/dom.js';\nexport default function updateSlidesProgress(translate = this && this.translate || 0) {\n const swiper = this;\n const params = swiper.params;\n const {\n slides,\n rtlTranslate: rtl,\n snapGrid\n } = swiper;\n if (slides.length === 0) return;\n if (typeof slides[0].swiperSlideOffset === 'undefined') swiper.updateSlidesOffset();\n let offsetCenter = -translate;\n if (rtl) offsetCenter = translate; // Visible Slides\n\n slides.removeClass(params.slideVisibleClass);\n swiper.visibleSlidesIndexes = [];\n swiper.visibleSlides = [];\n\n for (let i = 0; i < slides.length; i += 1) {\n const slide = slides[i];\n let slideOffset = slide.swiperSlideOffset;\n\n if (params.cssMode && params.centeredSlides) {\n slideOffset -= slides[0].swiperSlideOffset;\n }\n\n const slideProgress = (offsetCenter + (params.centeredSlides ? swiper.minTranslate() : 0) - slideOffset) / (slide.swiperSlideSize + params.spaceBetween);\n const originalSlideProgress = (offsetCenter - snapGrid[0] + (params.centeredSlides ? swiper.minTranslate() : 0) - slideOffset) / (slide.swiperSlideSize + params.spaceBetween);\n const slideBefore = -(offsetCenter - slideOffset);\n const slideAfter = slideBefore + swiper.slidesSizesGrid[i];\n const isVisible = slideBefore >= 0 && slideBefore < swiper.size - 1 || slideAfter > 1 && slideAfter <= swiper.size || slideBefore <= 0 && slideAfter >= swiper.size;\n\n if (isVisible) {\n swiper.visibleSlides.push(slide);\n swiper.visibleSlidesIndexes.push(i);\n slides.eq(i).addClass(params.slideVisibleClass);\n }\n\n slide.progress = rtl ? -slideProgress : slideProgress;\n slide.originalProgress = rtl ? -originalSlideProgress : originalSlideProgress;\n }\n\n swiper.visibleSlides = $(swiper.visibleSlides);\n}","import classesToSelector from '../../shared/classes-to-selector.js';\nimport $ from '../../shared/dom.js';\nexport default function A11y({\n swiper,\n extendParams,\n on\n}) {\n extendParams({\n a11y: {\n enabled: true,\n notificationClass: 'swiper-notification',\n prevSlideMessage: 'Previous slide',\n nextSlideMessage: 'Next slide',\n firstSlideMessage: 'This is the first slide',\n lastSlideMessage: 'This is the last slide',\n paginationBulletMessage: 'Go to slide {{index}}',\n slideLabelMessage: '{{index}} / {{slidesLength}}',\n containerMessage: null,\n containerRoleDescriptionMessage: null,\n itemRoleDescriptionMessage: null,\n slideRole: 'group'\n }\n });\n let liveRegion = null;\n\n function notify(message) {\n const notification = liveRegion;\n if (notification.length === 0) return;\n notification.html('');\n notification.html(message);\n }\n\n function getRandomNumber(size = 16) {\n const randomChar = () => Math.round(16 * Math.random()).toString(16);\n\n return 'x'.repeat(size).replace(/x/g, randomChar);\n }\n\n function makeElFocusable($el) {\n $el.attr('tabIndex', '0');\n }\n\n function makeElNotFocusable($el) {\n $el.attr('tabIndex', '-1');\n }\n\n function addElRole($el, role) {\n $el.attr('role', role);\n }\n\n function addElRoleDescription($el, description) {\n $el.attr('aria-roledescription', description);\n }\n\n function addElControls($el, controls) {\n $el.attr('aria-controls', controls);\n }\n\n function addElLabel($el, label) {\n $el.attr('aria-label', label);\n }\n\n function addElId($el, id) {\n $el.attr('id', id);\n }\n\n function addElLive($el, live) {\n $el.attr('aria-live', live);\n }\n\n function disableEl($el) {\n $el.attr('aria-disabled', true);\n }\n\n function enableEl($el) {\n $el.attr('aria-disabled', false);\n }\n\n function onEnterOrSpaceKey(e) {\n if (e.keyCode !== 13 && e.keyCode !== 32) return;\n const params = swiper.params.a11y;\n const $targetEl = $(e.target);\n\n if (swiper.navigation && swiper.navigation.$nextEl && $targetEl.is(swiper.navigation.$nextEl)) {\n if (!(swiper.isEnd && !swiper.params.loop)) {\n swiper.slideNext();\n }\n\n if (swiper.isEnd) {\n notify(params.lastSlideMessage);\n } else {\n notify(params.nextSlideMessage);\n }\n }\n\n if (swiper.navigation && swiper.navigation.$prevEl && $targetEl.is(swiper.navigation.$prevEl)) {\n if (!(swiper.isBeginning && !swiper.params.loop)) {\n swiper.slidePrev();\n }\n\n if (swiper.isBeginning) {\n notify(params.firstSlideMessage);\n } else {\n notify(params.prevSlideMessage);\n }\n }\n\n if (swiper.pagination && $targetEl.is(classesToSelector(swiper.params.pagination.bulletClass))) {\n $targetEl[0].click();\n }\n }\n\n function updateNavigation() {\n if (swiper.params.loop || swiper.params.rewind || !swiper.navigation) return;\n const {\n $nextEl,\n $prevEl\n } = swiper.navigation;\n\n if ($prevEl && $prevEl.length > 0) {\n if (swiper.isBeginning) {\n disableEl($prevEl);\n makeElNotFocusable($prevEl);\n } else {\n enableEl($prevEl);\n makeElFocusable($prevEl);\n }\n }\n\n if ($nextEl && $nextEl.length > 0) {\n if (swiper.isEnd) {\n disableEl($nextEl);\n makeElNotFocusable($nextEl);\n } else {\n enableEl($nextEl);\n makeElFocusable($nextEl);\n }\n }\n }\n\n function hasPagination() {\n return swiper.pagination && swiper.pagination.bullets && swiper.pagination.bullets.length;\n }\n\n function hasClickablePagination() {\n return hasPagination() && swiper.params.pagination.clickable;\n }\n\n function updatePagination() {\n const params = swiper.params.a11y;\n if (!hasPagination()) return;\n swiper.pagination.bullets.each(bulletEl => {\n const $bulletEl = $(bulletEl);\n\n if (swiper.params.pagination.clickable) {\n makeElFocusable($bulletEl);\n\n if (!swiper.params.pagination.renderBullet) {\n addElRole($bulletEl, 'button');\n addElLabel($bulletEl, params.paginationBulletMessage.replace(/\\{\\{index\\}\\}/, $bulletEl.index() + 1));\n }\n }\n\n if ($bulletEl.is(`.${swiper.params.pagination.bulletActiveClass}`)) {\n $bulletEl.attr('aria-current', 'true');\n } else {\n $bulletEl.removeAttr('aria-current');\n }\n });\n }\n\n const initNavEl = ($el, wrapperId, message) => {\n makeElFocusable($el);\n\n if ($el[0].tagName !== 'BUTTON') {\n addElRole($el, 'button');\n $el.on('keydown', onEnterOrSpaceKey);\n }\n\n addElLabel($el, message);\n addElControls($el, wrapperId);\n };\n\n function init() {\n const params = swiper.params.a11y;\n swiper.$el.append(liveRegion); // Container\n\n const $containerEl = swiper.$el;\n\n if (params.containerRoleDescriptionMessage) {\n addElRoleDescription($containerEl, params.containerRoleDescriptionMessage);\n }\n\n if (params.containerMessage) {\n addElLabel($containerEl, params.containerMessage);\n } // Wrapper\n\n\n const $wrapperEl = swiper.$wrapperEl;\n const wrapperId = $wrapperEl.attr('id') || `swiper-wrapper-${getRandomNumber(16)}`;\n const live = swiper.params.autoplay && swiper.params.autoplay.enabled ? 'off' : 'polite';\n addElId($wrapperEl, wrapperId);\n addElLive($wrapperEl, live); // Slide\n\n if (params.itemRoleDescriptionMessage) {\n addElRoleDescription($(swiper.slides), params.itemRoleDescriptionMessage);\n }\n\n addElRole($(swiper.slides), params.slideRole);\n const slidesLength = swiper.params.loop ? swiper.slides.filter(el => !el.classList.contains(swiper.params.slideDuplicateClass)).length : swiper.slides.length;\n swiper.slides.each((slideEl, index) => {\n const $slideEl = $(slideEl);\n const slideIndex = swiper.params.loop ? parseInt($slideEl.attr('data-swiper-slide-index'), 10) : index;\n const ariaLabelMessage = params.slideLabelMessage.replace(/\\{\\{index\\}\\}/, slideIndex + 1).replace(/\\{\\{slidesLength\\}\\}/, slidesLength);\n addElLabel($slideEl, ariaLabelMessage);\n }); // Navigation\n\n let $nextEl;\n let $prevEl;\n\n if (swiper.navigation && swiper.navigation.$nextEl) {\n $nextEl = swiper.navigation.$nextEl;\n }\n\n if (swiper.navigation && swiper.navigation.$prevEl) {\n $prevEl = swiper.navigation.$prevEl;\n }\n\n if ($nextEl && $nextEl.length) {\n initNavEl($nextEl, wrapperId, params.nextSlideMessage);\n }\n\n if ($prevEl && $prevEl.length) {\n initNavEl($prevEl, wrapperId, params.prevSlideMessage);\n } // Pagination\n\n\n if (hasClickablePagination()) {\n swiper.pagination.$el.on('keydown', classesToSelector(swiper.params.pagination.bulletClass), onEnterOrSpaceKey);\n }\n }\n\n function destroy() {\n if (liveRegion && liveRegion.length > 0) liveRegion.remove();\n let $nextEl;\n let $prevEl;\n\n if (swiper.navigation && swiper.navigation.$nextEl) {\n $nextEl = swiper.navigation.$nextEl;\n }\n\n if (swiper.navigation && swiper.navigation.$prevEl) {\n $prevEl = swiper.navigation.$prevEl;\n }\n\n if ($nextEl) {\n $nextEl.off('keydown', onEnterOrSpaceKey);\n }\n\n if ($prevEl) {\n $prevEl.off('keydown', onEnterOrSpaceKey);\n } // Pagination\n\n\n if (hasClickablePagination()) {\n swiper.pagination.$el.off('keydown', classesToSelector(swiper.params.pagination.bulletClass), onEnterOrSpaceKey);\n }\n }\n\n on('beforeInit', () => {\n liveRegion = $(``);\n });\n on('afterInit', () => {\n if (!swiper.params.a11y.enabled) return;\n init();\n updateNavigation();\n });\n on('toEdge', () => {\n if (!swiper.params.a11y.enabled) return;\n updateNavigation();\n });\n on('fromEdge', () => {\n if (!swiper.params.a11y.enabled) return;\n updateNavigation();\n });\n on('paginationUpdate', () => {\n if (!swiper.params.a11y.enabled) return;\n updatePagination();\n });\n on('destroy', () => {\n if (!swiper.params.a11y.enabled) return;\n destroy();\n });\n}","/* eslint no-underscore-dangle: \"off\" */\n\n/* eslint no-use-before-define: \"off\" */\nimport { getDocument } from 'ssr-window';\nimport { nextTick } from '../../shared/utils.js';\nexport default function Autoplay({\n swiper,\n extendParams,\n on,\n emit\n}) {\n let timeout;\n swiper.autoplay = {\n running: false,\n paused: false\n };\n extendParams({\n autoplay: {\n enabled: false,\n delay: 3000,\n waitForTransition: true,\n disableOnInteraction: true,\n stopOnLastSlide: false,\n reverseDirection: false,\n pauseOnMouseEnter: false\n }\n });\n\n function run() {\n const $activeSlideEl = swiper.slides.eq(swiper.activeIndex);\n let delay = swiper.params.autoplay.delay;\n\n if ($activeSlideEl.attr('data-swiper-autoplay')) {\n delay = $activeSlideEl.attr('data-swiper-autoplay') || swiper.params.autoplay.delay;\n }\n\n clearTimeout(timeout);\n timeout = nextTick(() => {\n let autoplayResult;\n\n if (swiper.params.autoplay.reverseDirection) {\n if (swiper.params.loop) {\n swiper.loopFix();\n autoplayResult = swiper.slidePrev(swiper.params.speed, true, true);\n emit('autoplay');\n } else if (!swiper.isBeginning) {\n autoplayResult = swiper.slidePrev(swiper.params.speed, true, true);\n emit('autoplay');\n } else if (!swiper.params.autoplay.stopOnLastSlide) {\n autoplayResult = swiper.slideTo(swiper.slides.length - 1, swiper.params.speed, true, true);\n emit('autoplay');\n } else {\n stop();\n }\n } else if (swiper.params.loop) {\n swiper.loopFix();\n autoplayResult = swiper.slideNext(swiper.params.speed, true, true);\n emit('autoplay');\n } else if (!swiper.isEnd) {\n autoplayResult = swiper.slideNext(swiper.params.speed, true, true);\n emit('autoplay');\n } else if (!swiper.params.autoplay.stopOnLastSlide) {\n autoplayResult = swiper.slideTo(0, swiper.params.speed, true, true);\n emit('autoplay');\n } else {\n stop();\n }\n\n if (swiper.params.cssMode && swiper.autoplay.running) run();else if (autoplayResult === false) {\n run();\n }\n }, delay);\n }\n\n function start() {\n if (typeof timeout !== 'undefined') return false;\n if (swiper.autoplay.running) return false;\n swiper.autoplay.running = true;\n emit('autoplayStart');\n run();\n return true;\n }\n\n function stop() {\n if (!swiper.autoplay.running) return false;\n if (typeof timeout === 'undefined') return false;\n\n if (timeout) {\n clearTimeout(timeout);\n timeout = undefined;\n }\n\n swiper.autoplay.running = false;\n emit('autoplayStop');\n return true;\n }\n\n function pause(speed) {\n if (!swiper.autoplay.running) return;\n if (swiper.autoplay.paused) return;\n if (timeout) clearTimeout(timeout);\n swiper.autoplay.paused = true;\n\n if (speed === 0 || !swiper.params.autoplay.waitForTransition) {\n swiper.autoplay.paused = false;\n run();\n } else {\n ['transitionend', 'webkitTransitionEnd'].forEach(event => {\n swiper.$wrapperEl[0].addEventListener(event, onTransitionEnd);\n });\n }\n }\n\n function onVisibilityChange() {\n const document = getDocument();\n\n if (document.visibilityState === 'hidden' && swiper.autoplay.running) {\n pause();\n }\n\n if (document.visibilityState === 'visible' && swiper.autoplay.paused) {\n run();\n swiper.autoplay.paused = false;\n }\n }\n\n function onTransitionEnd(e) {\n if (!swiper || swiper.destroyed || !swiper.$wrapperEl) return;\n if (e.target !== swiper.$wrapperEl[0]) return;\n ['transitionend', 'webkitTransitionEnd'].forEach(event => {\n swiper.$wrapperEl[0].removeEventListener(event, onTransitionEnd);\n });\n swiper.autoplay.paused = false;\n\n if (!swiper.autoplay.running) {\n stop();\n } else {\n run();\n }\n }\n\n function onMouseEnter() {\n if (swiper.params.autoplay.disableOnInteraction) {\n stop();\n } else {\n pause();\n }\n\n ['transitionend', 'webkitTransitionEnd'].forEach(event => {\n swiper.$wrapperEl[0].removeEventListener(event, onTransitionEnd);\n });\n }\n\n function onMouseLeave() {\n if (swiper.params.autoplay.disableOnInteraction) {\n return;\n }\n\n swiper.autoplay.paused = false;\n run();\n }\n\n function attachMouseEvents() {\n if (swiper.params.autoplay.pauseOnMouseEnter) {\n swiper.$el.on('mouseenter', onMouseEnter);\n swiper.$el.on('mouseleave', onMouseLeave);\n }\n }\n\n function detachMouseEvents() {\n swiper.$el.off('mouseenter', onMouseEnter);\n swiper.$el.off('mouseleave', onMouseLeave);\n }\n\n on('init', () => {\n if (swiper.params.autoplay.enabled) {\n start();\n const document = getDocument();\n document.addEventListener('visibilitychange', onVisibilityChange);\n attachMouseEvents();\n }\n });\n on('beforeTransitionStart', (_s, speed, internal) => {\n if (swiper.autoplay.running) {\n if (internal || !swiper.params.autoplay.disableOnInteraction) {\n swiper.autoplay.pause(speed);\n } else {\n stop();\n }\n }\n });\n on('sliderFirstMove', () => {\n if (swiper.autoplay.running) {\n if (swiper.params.autoplay.disableOnInteraction) {\n stop();\n } else {\n pause();\n }\n }\n });\n on('touchEnd', () => {\n if (swiper.params.cssMode && swiper.autoplay.paused && !swiper.params.autoplay.disableOnInteraction) {\n run();\n }\n });\n on('destroy', () => {\n detachMouseEvents();\n\n if (swiper.autoplay.running) {\n stop();\n }\n\n const document = getDocument();\n document.removeEventListener('visibilitychange', onVisibilityChange);\n });\n Object.assign(swiper.autoplay, {\n pause,\n run,\n start,\n stop\n });\n}","/* eslint no-bitwise: [\"error\", { \"allow\": [\">>\"] }] */\nimport { nextTick } from '../../shared/utils.js';\nexport default function Controller({\n swiper,\n extendParams,\n on\n}) {\n extendParams({\n controller: {\n control: undefined,\n inverse: false,\n by: 'slide' // or 'container'\n\n }\n });\n swiper.controller = {\n control: undefined\n };\n\n function LinearSpline(x, y) {\n const binarySearch = function search() {\n let maxIndex;\n let minIndex;\n let guess;\n return (array, val) => {\n minIndex = -1;\n maxIndex = array.length;\n\n while (maxIndex - minIndex > 1) {\n guess = maxIndex + minIndex >> 1;\n\n if (array[guess] <= val) {\n minIndex = guess;\n } else {\n maxIndex = guess;\n }\n }\n\n return maxIndex;\n };\n }();\n\n this.x = x;\n this.y = y;\n this.lastIndex = x.length - 1; // Given an x value (x2), return the expected y2 value:\n // (x1,y1) is the known point before given value,\n // (x3,y3) is the known point after given value.\n\n let i1;\n let i3;\n\n this.interpolate = function interpolate(x2) {\n if (!x2) return 0; // Get the indexes of x1 and x3 (the array indexes before and after given x2):\n\n i3 = binarySearch(this.x, x2);\n i1 = i3 - 1; // We have our indexes i1 & i3, so we can calculate already:\n // y2 := ((x2−x1) × (y3−y1)) ÷ (x3−x1) + y1\n\n return (x2 - this.x[i1]) * (this.y[i3] - this.y[i1]) / (this.x[i3] - this.x[i1]) + this.y[i1];\n };\n\n return this;\n } // xxx: for now i will just save one spline function to to\n\n\n function getInterpolateFunction(c) {\n if (!swiper.controller.spline) {\n swiper.controller.spline = swiper.params.loop ? new LinearSpline(swiper.slidesGrid, c.slidesGrid) : new LinearSpline(swiper.snapGrid, c.snapGrid);\n }\n }\n\n function setTranslate(_t, byController) {\n const controlled = swiper.controller.control;\n let multiplier;\n let controlledTranslate;\n const Swiper = swiper.constructor;\n\n function setControlledTranslate(c) {\n // this will create an Interpolate function based on the snapGrids\n // x is the Grid of the scrolled scroller and y will be the controlled scroller\n // it makes sense to create this only once and recall it for the interpolation\n // the function does a lot of value caching for performance\n const translate = swiper.rtlTranslate ? -swiper.translate : swiper.translate;\n\n if (swiper.params.controller.by === 'slide') {\n getInterpolateFunction(c); // i am not sure why the values have to be multiplicated this way, tried to invert the snapGrid\n // but it did not work out\n\n controlledTranslate = -swiper.controller.spline.interpolate(-translate);\n }\n\n if (!controlledTranslate || swiper.params.controller.by === 'container') {\n multiplier = (c.maxTranslate() - c.minTranslate()) / (swiper.maxTranslate() - swiper.minTranslate());\n controlledTranslate = (translate - swiper.minTranslate()) * multiplier + c.minTranslate();\n }\n\n if (swiper.params.controller.inverse) {\n controlledTranslate = c.maxTranslate() - controlledTranslate;\n }\n\n c.updateProgress(controlledTranslate);\n c.setTranslate(controlledTranslate, swiper);\n c.updateActiveIndex();\n c.updateSlidesClasses();\n }\n\n if (Array.isArray(controlled)) {\n for (let i = 0; i < controlled.length; i += 1) {\n if (controlled[i] !== byController && controlled[i] instanceof Swiper) {\n setControlledTranslate(controlled[i]);\n }\n }\n } else if (controlled instanceof Swiper && byController !== controlled) {\n setControlledTranslate(controlled);\n }\n }\n\n function setTransition(duration, byController) {\n const Swiper = swiper.constructor;\n const controlled = swiper.controller.control;\n let i;\n\n function setControlledTransition(c) {\n c.setTransition(duration, swiper);\n\n if (duration !== 0) {\n c.transitionStart();\n\n if (c.params.autoHeight) {\n nextTick(() => {\n c.updateAutoHeight();\n });\n }\n\n c.$wrapperEl.transitionEnd(() => {\n if (!controlled) return;\n\n if (c.params.loop && swiper.params.controller.by === 'slide') {\n c.loopFix();\n }\n\n c.transitionEnd();\n });\n }\n }\n\n if (Array.isArray(controlled)) {\n for (i = 0; i < controlled.length; i += 1) {\n if (controlled[i] !== byController && controlled[i] instanceof Swiper) {\n setControlledTransition(controlled[i]);\n }\n }\n } else if (controlled instanceof Swiper && byController !== controlled) {\n setControlledTransition(controlled);\n }\n }\n\n function removeSpline() {\n if (!swiper.controller.control) return;\n\n if (swiper.controller.spline) {\n swiper.controller.spline = undefined;\n delete swiper.controller.spline;\n }\n }\n\n on('beforeInit', () => {\n swiper.controller.control = swiper.params.controller.control;\n });\n on('update', () => {\n removeSpline();\n });\n on('resize', () => {\n removeSpline();\n });\n on('observerUpdate', () => {\n removeSpline();\n });\n on('setTranslate', (_s, translate, byController) => {\n if (!swiper.controller.control) return;\n swiper.controller.setTranslate(translate, byController);\n });\n on('setTransition', (_s, duration, byController) => {\n if (!swiper.controller.control) return;\n swiper.controller.setTransition(duration, byController);\n });\n Object.assign(swiper.controller, {\n setTranslate,\n setTransition\n });\n}","import createShadow from '../../shared/create-shadow.js';\nimport effectInit from '../../shared/effect-init.js';\nimport effectTarget from '../../shared/effect-target.js';\nimport effectVirtualTransitionEnd from '../../shared/effect-virtual-transition-end.js';\nexport default function EffectCards({\n swiper,\n extendParams,\n on\n}) {\n extendParams({\n cardsEffect: {\n slideShadows: true,\n transformEl: null\n }\n });\n\n const setTranslate = () => {\n const {\n slides,\n activeIndex\n } = swiper;\n const params = swiper.params.cardsEffect;\n const {\n startTranslate,\n isTouched\n } = swiper.touchEventsData;\n const currentTranslate = swiper.translate;\n\n for (let i = 0; i < slides.length; i += 1) {\n const $slideEl = slides.eq(i);\n const slideProgress = $slideEl[0].progress;\n const progress = Math.min(Math.max(slideProgress, -4), 4);\n let offset = $slideEl[0].swiperSlideOffset;\n\n if (swiper.params.centeredSlides && !swiper.params.cssMode) {\n swiper.$wrapperEl.transform(`translateX(${swiper.minTranslate()}px)`);\n }\n\n if (swiper.params.centeredSlides && swiper.params.cssMode) {\n offset -= slides[0].swiperSlideOffset;\n }\n\n let tX = swiper.params.cssMode ? -offset - swiper.translate : -offset;\n let tY = 0;\n const tZ = -100 * Math.abs(progress);\n let scale = 1;\n let rotate = -2 * progress;\n let tXAdd = 8 - Math.abs(progress) * 0.75;\n const isSwipeToNext = (i === activeIndex || i === activeIndex - 1) && progress > 0 && progress < 1 && (isTouched || swiper.params.cssMode) && currentTranslate < startTranslate;\n const isSwipeToPrev = (i === activeIndex || i === activeIndex + 1) && progress < 0 && progress > -1 && (isTouched || swiper.params.cssMode) && currentTranslate > startTranslate;\n\n if (isSwipeToNext || isSwipeToPrev) {\n const subProgress = (1 - Math.abs((Math.abs(progress) - 0.5) / 0.5)) ** 0.5;\n rotate += -28 * progress * subProgress;\n scale += -0.5 * subProgress;\n tXAdd += 96 * subProgress;\n tY = `${-25 * subProgress * Math.abs(progress)}%`;\n }\n\n if (progress < 0) {\n // next\n tX = `calc(${tX}px + (${tXAdd * Math.abs(progress)}%))`;\n } else if (progress > 0) {\n // prev\n tX = `calc(${tX}px + (-${tXAdd * Math.abs(progress)}%))`;\n } else {\n tX = `${tX}px`;\n }\n\n if (!swiper.isHorizontal()) {\n const prevY = tY;\n tY = tX;\n tX = prevY;\n }\n\n const scaleString = progress < 0 ? `${1 + (1 - scale) * progress}` : `${1 - (1 - scale) * progress}`;\n const transform = `\n translate3d(${tX}, ${tY}, ${tZ}px)\n rotateZ(${rotate}deg)\n scale(${scaleString})\n `;\n\n if (params.slideShadows) {\n // Set shadows\n let $shadowEl = $slideEl.find('.swiper-slide-shadow');\n\n if ($shadowEl.length === 0) {\n $shadowEl = createShadow(params, $slideEl);\n }\n\n if ($shadowEl.length) $shadowEl[0].style.opacity = Math.min(Math.max((Math.abs(progress) - 0.5) / 0.5, 0), 1);\n }\n\n $slideEl[0].style.zIndex = -Math.abs(Math.round(slideProgress)) + slides.length;\n const $targetEl = effectTarget(params, $slideEl);\n $targetEl.transform(transform);\n }\n };\n\n const setTransition = duration => {\n const {\n transformEl\n } = swiper.params.cardsEffect;\n const $transitionElements = transformEl ? swiper.slides.find(transformEl) : swiper.slides;\n $transitionElements.transition(duration).find('.swiper-slide-shadow').transition(duration);\n effectVirtualTransitionEnd({\n swiper,\n duration,\n transformEl\n });\n };\n\n effectInit({\n effect: 'cards',\n swiper,\n on,\n setTranslate,\n setTransition,\n perspective: () => true,\n overwriteParams: () => ({\n watchSlidesProgress: true,\n virtualTranslate: !swiper.params.cssMode\n })\n });\n}","import createShadow from '../../shared/create-shadow.js';\nimport effectInit from '../../shared/effect-init.js';\nimport effectTarget from '../../shared/effect-target.js';\nexport default function EffectCoverflow({\n swiper,\n extendParams,\n on\n}) {\n extendParams({\n coverflowEffect: {\n rotate: 50,\n stretch: 0,\n depth: 100,\n scale: 1,\n modifier: 1,\n slideShadows: true,\n transformEl: null\n }\n });\n\n const setTranslate = () => {\n const {\n width: swiperWidth,\n height: swiperHeight,\n slides,\n slidesSizesGrid\n } = swiper;\n const params = swiper.params.coverflowEffect;\n const isHorizontal = swiper.isHorizontal();\n const transform = swiper.translate;\n const center = isHorizontal ? -transform + swiperWidth / 2 : -transform + swiperHeight / 2;\n const rotate = isHorizontal ? params.rotate : -params.rotate;\n const translate = params.depth; // Each slide offset from center\n\n for (let i = 0, length = slides.length; i < length; i += 1) {\n const $slideEl = slides.eq(i);\n const slideSize = slidesSizesGrid[i];\n const slideOffset = $slideEl[0].swiperSlideOffset;\n const offsetMultiplier = (center - slideOffset - slideSize / 2) / slideSize * params.modifier;\n let rotateY = isHorizontal ? rotate * offsetMultiplier : 0;\n let rotateX = isHorizontal ? 0 : rotate * offsetMultiplier; // var rotateZ = 0\n\n let translateZ = -translate * Math.abs(offsetMultiplier);\n let stretch = params.stretch; // Allow percentage to make a relative stretch for responsive sliders\n\n if (typeof stretch === 'string' && stretch.indexOf('%') !== -1) {\n stretch = parseFloat(params.stretch) / 100 * slideSize;\n }\n\n let translateY = isHorizontal ? 0 : stretch * offsetMultiplier;\n let translateX = isHorizontal ? stretch * offsetMultiplier : 0;\n let scale = 1 - (1 - params.scale) * Math.abs(offsetMultiplier); // Fix for ultra small values\n\n if (Math.abs(translateX) < 0.001) translateX = 0;\n if (Math.abs(translateY) < 0.001) translateY = 0;\n if (Math.abs(translateZ) < 0.001) translateZ = 0;\n if (Math.abs(rotateY) < 0.001) rotateY = 0;\n if (Math.abs(rotateX) < 0.001) rotateX = 0;\n if (Math.abs(scale) < 0.001) scale = 0;\n const slideTransform = `translate3d(${translateX}px,${translateY}px,${translateZ}px) rotateX(${rotateX}deg) rotateY(${rotateY}deg) scale(${scale})`;\n const $targetEl = effectTarget(params, $slideEl);\n $targetEl.transform(slideTransform);\n $slideEl[0].style.zIndex = -Math.abs(Math.round(offsetMultiplier)) + 1;\n\n if (params.slideShadows) {\n // Set shadows\n let $shadowBeforeEl = isHorizontal ? $slideEl.find('.swiper-slide-shadow-left') : $slideEl.find('.swiper-slide-shadow-top');\n let $shadowAfterEl = isHorizontal ? $slideEl.find('.swiper-slide-shadow-right') : $slideEl.find('.swiper-slide-shadow-bottom');\n\n if ($shadowBeforeEl.length === 0) {\n $shadowBeforeEl = createShadow(params, $slideEl, isHorizontal ? 'left' : 'top');\n }\n\n if ($shadowAfterEl.length === 0) {\n $shadowAfterEl = createShadow(params, $slideEl, isHorizontal ? 'right' : 'bottom');\n }\n\n if ($shadowBeforeEl.length) $shadowBeforeEl[0].style.opacity = offsetMultiplier > 0 ? offsetMultiplier : 0;\n if ($shadowAfterEl.length) $shadowAfterEl[0].style.opacity = -offsetMultiplier > 0 ? -offsetMultiplier : 0;\n }\n }\n };\n\n const setTransition = duration => {\n const {\n transformEl\n } = swiper.params.coverflowEffect;\n const $transitionElements = transformEl ? swiper.slides.find(transformEl) : swiper.slides;\n $transitionElements.transition(duration).find('.swiper-slide-shadow-top, .swiper-slide-shadow-right, .swiper-slide-shadow-bottom, .swiper-slide-shadow-left').transition(duration);\n };\n\n effectInit({\n effect: 'coverflow',\n swiper,\n on,\n setTranslate,\n setTransition,\n perspective: () => true,\n overwriteParams: () => ({\n watchSlidesProgress: true\n })\n });\n}","import createShadow from '../../shared/create-shadow.js';\nimport effectInit from '../../shared/effect-init.js';\nimport effectTarget from '../../shared/effect-target.js';\nimport effectVirtualTransitionEnd from '../../shared/effect-virtual-transition-end.js';\nexport default function EffectCreative({\n swiper,\n extendParams,\n on\n}) {\n extendParams({\n creativeEffect: {\n transformEl: null,\n limitProgress: 1,\n shadowPerProgress: false,\n progressMultiplier: 1,\n perspective: true,\n prev: {\n translate: [0, 0, 0],\n rotate: [0, 0, 0],\n opacity: 1,\n scale: 1\n },\n next: {\n translate: [0, 0, 0],\n rotate: [0, 0, 0],\n opacity: 1,\n scale: 1\n }\n }\n });\n\n const getTranslateValue = value => {\n if (typeof value === 'string') return value;\n return `${value}px`;\n };\n\n const setTranslate = () => {\n const {\n slides,\n $wrapperEl,\n slidesSizesGrid\n } = swiper;\n const params = swiper.params.creativeEffect;\n const {\n progressMultiplier: multiplier\n } = params;\n const isCenteredSlides = swiper.params.centeredSlides;\n\n if (isCenteredSlides) {\n const margin = slidesSizesGrid[0] / 2 - swiper.params.slidesOffsetBefore || 0;\n $wrapperEl.transform(`translateX(calc(50% - ${margin}px))`);\n }\n\n for (let i = 0; i < slides.length; i += 1) {\n const $slideEl = slides.eq(i);\n const slideProgress = $slideEl[0].progress;\n const progress = Math.min(Math.max($slideEl[0].progress, -params.limitProgress), params.limitProgress);\n let originalProgress = progress;\n\n if (!isCenteredSlides) {\n originalProgress = Math.min(Math.max($slideEl[0].originalProgress, -params.limitProgress), params.limitProgress);\n }\n\n const offset = $slideEl[0].swiperSlideOffset;\n const t = [swiper.params.cssMode ? -offset - swiper.translate : -offset, 0, 0];\n const r = [0, 0, 0];\n let custom = false;\n\n if (!swiper.isHorizontal()) {\n t[1] = t[0];\n t[0] = 0;\n }\n\n let data = {\n translate: [0, 0, 0],\n rotate: [0, 0, 0],\n scale: 1,\n opacity: 1\n };\n\n if (progress < 0) {\n data = params.next;\n custom = true;\n } else if (progress > 0) {\n data = params.prev;\n custom = true;\n } // set translate\n\n\n t.forEach((value, index) => {\n t[index] = `calc(${value}px + (${getTranslateValue(data.translate[index])} * ${Math.abs(progress * multiplier)}))`;\n }); // set rotates\n\n r.forEach((value, index) => {\n r[index] = data.rotate[index] * Math.abs(progress * multiplier);\n });\n $slideEl[0].style.zIndex = -Math.abs(Math.round(slideProgress)) + slides.length;\n const translateString = t.join(', ');\n const rotateString = `rotateX(${r[0]}deg) rotateY(${r[1]}deg) rotateZ(${r[2]}deg)`;\n const scaleString = originalProgress < 0 ? `scale(${1 + (1 - data.scale) * originalProgress * multiplier})` : `scale(${1 - (1 - data.scale) * originalProgress * multiplier})`;\n const opacityString = originalProgress < 0 ? 1 + (1 - data.opacity) * originalProgress * multiplier : 1 - (1 - data.opacity) * originalProgress * multiplier;\n const transform = `translate3d(${translateString}) ${rotateString} ${scaleString}`; // Set shadows\n\n if (custom && data.shadow || !custom) {\n let $shadowEl = $slideEl.children('.swiper-slide-shadow');\n\n if ($shadowEl.length === 0 && data.shadow) {\n $shadowEl = createShadow(params, $slideEl);\n }\n\n if ($shadowEl.length) {\n const shadowOpacity = params.shadowPerProgress ? progress * (1 / params.limitProgress) : progress;\n $shadowEl[0].style.opacity = Math.min(Math.max(Math.abs(shadowOpacity), 0), 1);\n }\n }\n\n const $targetEl = effectTarget(params, $slideEl);\n $targetEl.transform(transform).css({\n opacity: opacityString\n });\n\n if (data.origin) {\n $targetEl.css('transform-origin', data.origin);\n }\n }\n };\n\n const setTransition = duration => {\n const {\n transformEl\n } = swiper.params.creativeEffect;\n const $transitionElements = transformEl ? swiper.slides.find(transformEl) : swiper.slides;\n $transitionElements.transition(duration).find('.swiper-slide-shadow').transition(duration);\n effectVirtualTransitionEnd({\n swiper,\n duration,\n transformEl,\n allSlides: true\n });\n };\n\n effectInit({\n effect: 'creative',\n swiper,\n on,\n setTranslate,\n setTransition,\n perspective: () => swiper.params.creativeEffect.perspective,\n overwriteParams: () => ({\n watchSlidesProgress: true,\n virtualTranslate: !swiper.params.cssMode\n })\n });\n}","import $ from '../../shared/dom.js';\nimport effectInit from '../../shared/effect-init.js';\nexport default function EffectCube({\n swiper,\n extendParams,\n on\n}) {\n extendParams({\n cubeEffect: {\n slideShadows: true,\n shadow: true,\n shadowOffset: 20,\n shadowScale: 0.94\n }\n });\n\n const setTranslate = () => {\n const {\n $el,\n $wrapperEl,\n slides,\n width: swiperWidth,\n height: swiperHeight,\n rtlTranslate: rtl,\n size: swiperSize,\n browser\n } = swiper;\n const params = swiper.params.cubeEffect;\n const isHorizontal = swiper.isHorizontal();\n const isVirtual = swiper.virtual && swiper.params.virtual.enabled;\n let wrapperRotate = 0;\n let $cubeShadowEl;\n\n if (params.shadow) {\n if (isHorizontal) {\n $cubeShadowEl = $wrapperEl.find('.swiper-cube-shadow');\n\n if ($cubeShadowEl.length === 0) {\n $cubeShadowEl = $('
');\n $wrapperEl.append($cubeShadowEl);\n }\n\n $cubeShadowEl.css({\n height: `${swiperWidth}px`\n });\n } else {\n $cubeShadowEl = $el.find('.swiper-cube-shadow');\n\n if ($cubeShadowEl.length === 0) {\n $cubeShadowEl = $('
');\n $el.append($cubeShadowEl);\n }\n }\n }\n\n for (let i = 0; i < slides.length; i += 1) {\n const $slideEl = slides.eq(i);\n let slideIndex = i;\n\n if (isVirtual) {\n slideIndex = parseInt($slideEl.attr('data-swiper-slide-index'), 10);\n }\n\n let slideAngle = slideIndex * 90;\n let round = Math.floor(slideAngle / 360);\n\n if (rtl) {\n slideAngle = -slideAngle;\n round = Math.floor(-slideAngle / 360);\n }\n\n const progress = Math.max(Math.min($slideEl[0].progress, 1), -1);\n let tx = 0;\n let ty = 0;\n let tz = 0;\n\n if (slideIndex % 4 === 0) {\n tx = -round * 4 * swiperSize;\n tz = 0;\n } else if ((slideIndex - 1) % 4 === 0) {\n tx = 0;\n tz = -round * 4 * swiperSize;\n } else if ((slideIndex - 2) % 4 === 0) {\n tx = swiperSize + round * 4 * swiperSize;\n tz = swiperSize;\n } else if ((slideIndex - 3) % 4 === 0) {\n tx = -swiperSize;\n tz = 3 * swiperSize + swiperSize * 4 * round;\n }\n\n if (rtl) {\n tx = -tx;\n }\n\n if (!isHorizontal) {\n ty = tx;\n tx = 0;\n }\n\n const transform = `rotateX(${isHorizontal ? 0 : -slideAngle}deg) rotateY(${isHorizontal ? slideAngle : 0}deg) translate3d(${tx}px, ${ty}px, ${tz}px)`;\n\n if (progress <= 1 && progress > -1) {\n wrapperRotate = slideIndex * 90 + progress * 90;\n if (rtl) wrapperRotate = -slideIndex * 90 - progress * 90;\n }\n\n $slideEl.transform(transform);\n\n if (params.slideShadows) {\n // Set shadows\n let shadowBefore = isHorizontal ? $slideEl.find('.swiper-slide-shadow-left') : $slideEl.find('.swiper-slide-shadow-top');\n let shadowAfter = isHorizontal ? $slideEl.find('.swiper-slide-shadow-right') : $slideEl.find('.swiper-slide-shadow-bottom');\n\n if (shadowBefore.length === 0) {\n shadowBefore = $(`
`);\n $slideEl.append(shadowBefore);\n }\n\n if (shadowAfter.length === 0) {\n shadowAfter = $(`
`);\n $slideEl.append(shadowAfter);\n }\n\n if (shadowBefore.length) shadowBefore[0].style.opacity = Math.max(-progress, 0);\n if (shadowAfter.length) shadowAfter[0].style.opacity = Math.max(progress, 0);\n }\n }\n\n $wrapperEl.css({\n '-webkit-transform-origin': `50% 50% -${swiperSize / 2}px`,\n 'transform-origin': `50% 50% -${swiperSize / 2}px`\n });\n\n if (params.shadow) {\n if (isHorizontal) {\n $cubeShadowEl.transform(`translate3d(0px, ${swiperWidth / 2 + params.shadowOffset}px, ${-swiperWidth / 2}px) rotateX(90deg) rotateZ(0deg) scale(${params.shadowScale})`);\n } else {\n const shadowAngle = Math.abs(wrapperRotate) - Math.floor(Math.abs(wrapperRotate) / 90) * 90;\n const multiplier = 1.5 - (Math.sin(shadowAngle * 2 * Math.PI / 360) / 2 + Math.cos(shadowAngle * 2 * Math.PI / 360) / 2);\n const scale1 = params.shadowScale;\n const scale2 = params.shadowScale / multiplier;\n const offset = params.shadowOffset;\n $cubeShadowEl.transform(`scale3d(${scale1}, 1, ${scale2}) translate3d(0px, ${swiperHeight / 2 + offset}px, ${-swiperHeight / 2 / scale2}px) rotateX(-90deg)`);\n }\n }\n\n const zFactor = browser.isSafari || browser.isWebView ? -swiperSize / 2 : 0;\n $wrapperEl.transform(`translate3d(0px,0,${zFactor}px) rotateX(${swiper.isHorizontal() ? 0 : wrapperRotate}deg) rotateY(${swiper.isHorizontal() ? -wrapperRotate : 0}deg)`);\n };\n\n const setTransition = duration => {\n const {\n $el,\n slides\n } = swiper;\n slides.transition(duration).find('.swiper-slide-shadow-top, .swiper-slide-shadow-right, .swiper-slide-shadow-bottom, .swiper-slide-shadow-left').transition(duration);\n\n if (swiper.params.cubeEffect.shadow && !swiper.isHorizontal()) {\n $el.find('.swiper-cube-shadow').transition(duration);\n }\n };\n\n effectInit({\n effect: 'cube',\n swiper,\n on,\n setTranslate,\n setTransition,\n perspective: () => true,\n overwriteParams: () => ({\n slidesPerView: 1,\n slidesPerGroup: 1,\n watchSlidesProgress: true,\n resistanceRatio: 0,\n spaceBetween: 0,\n centeredSlides: false,\n virtualTranslate: true\n })\n });\n}","import effectInit from '../../shared/effect-init.js';\nimport effectTarget from '../../shared/effect-target.js';\nimport effectVirtualTransitionEnd from '../../shared/effect-virtual-transition-end.js';\nexport default function EffectFade({\n swiper,\n extendParams,\n on\n}) {\n extendParams({\n fadeEffect: {\n crossFade: false,\n transformEl: null\n }\n });\n\n const setTranslate = () => {\n const {\n slides\n } = swiper;\n const params = swiper.params.fadeEffect;\n\n for (let i = 0; i < slides.length; i += 1) {\n const $slideEl = swiper.slides.eq(i);\n const offset = $slideEl[0].swiperSlideOffset;\n let tx = -offset;\n if (!swiper.params.virtualTranslate) tx -= swiper.translate;\n let ty = 0;\n\n if (!swiper.isHorizontal()) {\n ty = tx;\n tx = 0;\n }\n\n const slideOpacity = swiper.params.fadeEffect.crossFade ? Math.max(1 - Math.abs($slideEl[0].progress), 0) : 1 + Math.min(Math.max($slideEl[0].progress, -1), 0);\n const $targetEl = effectTarget(params, $slideEl);\n $targetEl.css({\n opacity: slideOpacity\n }).transform(`translate3d(${tx}px, ${ty}px, 0px)`);\n }\n };\n\n const setTransition = duration => {\n const {\n transformEl\n } = swiper.params.fadeEffect;\n const $transitionElements = transformEl ? swiper.slides.find(transformEl) : swiper.slides;\n $transitionElements.transition(duration);\n effectVirtualTransitionEnd({\n swiper,\n duration,\n transformEl,\n allSlides: true\n });\n };\n\n effectInit({\n effect: 'fade',\n swiper,\n on,\n setTranslate,\n setTransition,\n overwriteParams: () => ({\n slidesPerView: 1,\n slidesPerGroup: 1,\n watchSlidesProgress: true,\n spaceBetween: 0,\n virtualTranslate: !swiper.params.cssMode\n })\n });\n}","import createShadow from '../../shared/create-shadow.js';\nimport effectInit from '../../shared/effect-init.js';\nimport effectTarget from '../../shared/effect-target.js';\nimport effectVirtualTransitionEnd from '../../shared/effect-virtual-transition-end.js';\nexport default function EffectFlip({\n swiper,\n extendParams,\n on\n}) {\n extendParams({\n flipEffect: {\n slideShadows: true,\n limitRotation: true,\n transformEl: null\n }\n });\n\n const setTranslate = () => {\n const {\n slides,\n rtlTranslate: rtl\n } = swiper;\n const params = swiper.params.flipEffect;\n\n for (let i = 0; i < slides.length; i += 1) {\n const $slideEl = slides.eq(i);\n let progress = $slideEl[0].progress;\n\n if (swiper.params.flipEffect.limitRotation) {\n progress = Math.max(Math.min($slideEl[0].progress, 1), -1);\n }\n\n const offset = $slideEl[0].swiperSlideOffset;\n const rotate = -180 * progress;\n let rotateY = rotate;\n let rotateX = 0;\n let tx = swiper.params.cssMode ? -offset - swiper.translate : -offset;\n let ty = 0;\n\n if (!swiper.isHorizontal()) {\n ty = tx;\n tx = 0;\n rotateX = -rotateY;\n rotateY = 0;\n } else if (rtl) {\n rotateY = -rotateY;\n }\n\n $slideEl[0].style.zIndex = -Math.abs(Math.round(progress)) + slides.length;\n\n if (params.slideShadows) {\n // Set shadows\n let shadowBefore = swiper.isHorizontal() ? $slideEl.find('.swiper-slide-shadow-left') : $slideEl.find('.swiper-slide-shadow-top');\n let shadowAfter = swiper.isHorizontal() ? $slideEl.find('.swiper-slide-shadow-right') : $slideEl.find('.swiper-slide-shadow-bottom');\n\n if (shadowBefore.length === 0) {\n shadowBefore = createShadow(params, $slideEl, swiper.isHorizontal() ? 'left' : 'top');\n }\n\n if (shadowAfter.length === 0) {\n shadowAfter = createShadow(params, $slideEl, swiper.isHorizontal() ? 'right' : 'bottom');\n }\n\n if (shadowBefore.length) shadowBefore[0].style.opacity = Math.max(-progress, 0);\n if (shadowAfter.length) shadowAfter[0].style.opacity = Math.max(progress, 0);\n }\n\n const transform = `translate3d(${tx}px, ${ty}px, 0px) rotateX(${rotateX}deg) rotateY(${rotateY}deg)`;\n const $targetEl = effectTarget(params, $slideEl);\n $targetEl.transform(transform);\n }\n };\n\n const setTransition = duration => {\n const {\n transformEl\n } = swiper.params.flipEffect;\n const $transitionElements = transformEl ? swiper.slides.find(transformEl) : swiper.slides;\n $transitionElements.transition(duration).find('.swiper-slide-shadow-top, .swiper-slide-shadow-right, .swiper-slide-shadow-bottom, .swiper-slide-shadow-left').transition(duration);\n effectVirtualTransitionEnd({\n swiper,\n duration,\n transformEl\n });\n };\n\n effectInit({\n effect: 'flip',\n swiper,\n on,\n setTranslate,\n setTransition,\n perspective: () => true,\n overwriteParams: () => ({\n slidesPerView: 1,\n slidesPerGroup: 1,\n watchSlidesProgress: true,\n spaceBetween: 0,\n virtualTranslate: !swiper.params.cssMode\n })\n });\n}","import { now } from '../../shared/utils.js';\nexport default function freeMode({\n swiper,\n extendParams,\n emit,\n once\n}) {\n extendParams({\n freeMode: {\n enabled: false,\n momentum: true,\n momentumRatio: 1,\n momentumBounce: true,\n momentumBounceRatio: 1,\n momentumVelocityRatio: 1,\n sticky: false,\n minimumVelocity: 0.02\n }\n });\n\n function onTouchMove() {\n const {\n touchEventsData: data,\n touches\n } = swiper; // Velocity\n\n if (data.velocities.length === 0) {\n data.velocities.push({\n position: touches[swiper.isHorizontal() ? 'startX' : 'startY'],\n time: data.touchStartTime\n });\n }\n\n data.velocities.push({\n position: touches[swiper.isHorizontal() ? 'currentX' : 'currentY'],\n time: now()\n });\n }\n\n function onTouchEnd({\n currentPos\n }) {\n const {\n params,\n $wrapperEl,\n rtlTranslate: rtl,\n snapGrid,\n touchEventsData: data\n } = swiper; // Time diff\n\n const touchEndTime = now();\n const timeDiff = touchEndTime - data.touchStartTime;\n\n if (currentPos < -swiper.minTranslate()) {\n swiper.slideTo(swiper.activeIndex);\n return;\n }\n\n if (currentPos > -swiper.maxTranslate()) {\n if (swiper.slides.length < snapGrid.length) {\n swiper.slideTo(snapGrid.length - 1);\n } else {\n swiper.slideTo(swiper.slides.length - 1);\n }\n\n return;\n }\n\n if (params.freeMode.momentum) {\n if (data.velocities.length > 1) {\n const lastMoveEvent = data.velocities.pop();\n const velocityEvent = data.velocities.pop();\n const distance = lastMoveEvent.position - velocityEvent.position;\n const time = lastMoveEvent.time - velocityEvent.time;\n swiper.velocity = distance / time;\n swiper.velocity /= 2;\n\n if (Math.abs(swiper.velocity) < params.freeMode.minimumVelocity) {\n swiper.velocity = 0;\n } // this implies that the user stopped moving a finger then released.\n // There would be no events with distance zero, so the last event is stale.\n\n\n if (time > 150 || now() - lastMoveEvent.time > 300) {\n swiper.velocity = 0;\n }\n } else {\n swiper.velocity = 0;\n }\n\n swiper.velocity *= params.freeMode.momentumVelocityRatio;\n data.velocities.length = 0;\n let momentumDuration = 1000 * params.freeMode.momentumRatio;\n const momentumDistance = swiper.velocity * momentumDuration;\n let newPosition = swiper.translate + momentumDistance;\n if (rtl) newPosition = -newPosition;\n let doBounce = false;\n let afterBouncePosition;\n const bounceAmount = Math.abs(swiper.velocity) * 20 * params.freeMode.momentumBounceRatio;\n let needsLoopFix;\n\n if (newPosition < swiper.maxTranslate()) {\n if (params.freeMode.momentumBounce) {\n if (newPosition + swiper.maxTranslate() < -bounceAmount) {\n newPosition = swiper.maxTranslate() - bounceAmount;\n }\n\n afterBouncePosition = swiper.maxTranslate();\n doBounce = true;\n data.allowMomentumBounce = true;\n } else {\n newPosition = swiper.maxTranslate();\n }\n\n if (params.loop && params.centeredSlides) needsLoopFix = true;\n } else if (newPosition > swiper.minTranslate()) {\n if (params.freeMode.momentumBounce) {\n if (newPosition - swiper.minTranslate() > bounceAmount) {\n newPosition = swiper.minTranslate() + bounceAmount;\n }\n\n afterBouncePosition = swiper.minTranslate();\n doBounce = true;\n data.allowMomentumBounce = true;\n } else {\n newPosition = swiper.minTranslate();\n }\n\n if (params.loop && params.centeredSlides) needsLoopFix = true;\n } else if (params.freeMode.sticky) {\n let nextSlide;\n\n for (let j = 0; j < snapGrid.length; j += 1) {\n if (snapGrid[j] > -newPosition) {\n nextSlide = j;\n break;\n }\n }\n\n if (Math.abs(snapGrid[nextSlide] - newPosition) < Math.abs(snapGrid[nextSlide - 1] - newPosition) || swiper.swipeDirection === 'next') {\n newPosition = snapGrid[nextSlide];\n } else {\n newPosition = snapGrid[nextSlide - 1];\n }\n\n newPosition = -newPosition;\n }\n\n if (needsLoopFix) {\n once('transitionEnd', () => {\n swiper.loopFix();\n });\n } // Fix duration\n\n\n if (swiper.velocity !== 0) {\n if (rtl) {\n momentumDuration = Math.abs((-newPosition - swiper.translate) / swiper.velocity);\n } else {\n momentumDuration = Math.abs((newPosition - swiper.translate) / swiper.velocity);\n }\n\n if (params.freeMode.sticky) {\n // If freeMode.sticky is active and the user ends a swipe with a slow-velocity\n // event, then durations can be 20+ seconds to slide one (or zero!) slides.\n // It's easy to see this when simulating touch with mouse events. To fix this,\n // limit single-slide swipes to the default slide duration. This also has the\n // nice side effect of matching slide speed if the user stopped moving before\n // lifting finger or mouse vs. moving slowly before lifting the finger/mouse.\n // For faster swipes, also apply limits (albeit higher ones).\n const moveDistance = Math.abs((rtl ? -newPosition : newPosition) - swiper.translate);\n const currentSlideSize = swiper.slidesSizesGrid[swiper.activeIndex];\n\n if (moveDistance < currentSlideSize) {\n momentumDuration = params.speed;\n } else if (moveDistance < 2 * currentSlideSize) {\n momentumDuration = params.speed * 1.5;\n } else {\n momentumDuration = params.speed * 2.5;\n }\n }\n } else if (params.freeMode.sticky) {\n swiper.slideToClosest();\n return;\n }\n\n if (params.freeMode.momentumBounce && doBounce) {\n swiper.updateProgress(afterBouncePosition);\n swiper.setTransition(momentumDuration);\n swiper.setTranslate(newPosition);\n swiper.transitionStart(true, swiper.swipeDirection);\n swiper.animating = true;\n $wrapperEl.transitionEnd(() => {\n if (!swiper || swiper.destroyed || !data.allowMomentumBounce) return;\n emit('momentumBounce');\n swiper.setTransition(params.speed);\n setTimeout(() => {\n swiper.setTranslate(afterBouncePosition);\n $wrapperEl.transitionEnd(() => {\n if (!swiper || swiper.destroyed) return;\n swiper.transitionEnd();\n });\n }, 0);\n });\n } else if (swiper.velocity) {\n emit('_freeModeNoMomentumRelease');\n swiper.updateProgress(newPosition);\n swiper.setTransition(momentumDuration);\n swiper.setTranslate(newPosition);\n swiper.transitionStart(true, swiper.swipeDirection);\n\n if (!swiper.animating) {\n swiper.animating = true;\n $wrapperEl.transitionEnd(() => {\n if (!swiper || swiper.destroyed) return;\n swiper.transitionEnd();\n });\n }\n } else {\n swiper.updateProgress(newPosition);\n }\n\n swiper.updateActiveIndex();\n swiper.updateSlidesClasses();\n } else if (params.freeMode.sticky) {\n swiper.slideToClosest();\n return;\n } else if (params.freeMode) {\n emit('_freeModeNoMomentumRelease');\n }\n\n if (!params.freeMode.momentum || timeDiff >= params.longSwipesMs) {\n swiper.updateProgress();\n swiper.updateActiveIndex();\n swiper.updateSlidesClasses();\n }\n }\n\n Object.assign(swiper, {\n freeMode: {\n onTouchMove,\n onTouchEnd\n }\n });\n}","export default function Grid({\n swiper,\n extendParams\n}) {\n extendParams({\n grid: {\n rows: 1,\n fill: 'column'\n }\n });\n let slidesNumberEvenToRows;\n let slidesPerRow;\n let numFullColumns;\n\n const initSlides = slidesLength => {\n const {\n slidesPerView\n } = swiper.params;\n const {\n rows,\n fill\n } = swiper.params.grid;\n slidesPerRow = slidesNumberEvenToRows / rows;\n numFullColumns = Math.floor(slidesLength / rows);\n\n if (Math.floor(slidesLength / rows) === slidesLength / rows) {\n slidesNumberEvenToRows = slidesLength;\n } else {\n slidesNumberEvenToRows = Math.ceil(slidesLength / rows) * rows;\n }\n\n if (slidesPerView !== 'auto' && fill === 'row') {\n slidesNumberEvenToRows = Math.max(slidesNumberEvenToRows, slidesPerView * rows);\n }\n };\n\n const updateSlide = (i, slide, slidesLength, getDirectionLabel) => {\n const {\n slidesPerGroup,\n spaceBetween\n } = swiper.params;\n const {\n rows,\n fill\n } = swiper.params.grid; // Set slides order\n\n let newSlideOrderIndex;\n let column;\n let row;\n\n if (fill === 'row' && slidesPerGroup > 1) {\n const groupIndex = Math.floor(i / (slidesPerGroup * rows));\n const slideIndexInGroup = i - rows * slidesPerGroup * groupIndex;\n const columnsInGroup = groupIndex === 0 ? slidesPerGroup : Math.min(Math.ceil((slidesLength - groupIndex * rows * slidesPerGroup) / rows), slidesPerGroup);\n row = Math.floor(slideIndexInGroup / columnsInGroup);\n column = slideIndexInGroup - row * columnsInGroup + groupIndex * slidesPerGroup;\n newSlideOrderIndex = column + row * slidesNumberEvenToRows / rows;\n slide.css({\n '-webkit-order': newSlideOrderIndex,\n order: newSlideOrderIndex\n });\n } else if (fill === 'column') {\n column = Math.floor(i / rows);\n row = i - column * rows;\n\n if (column > numFullColumns || column === numFullColumns && row === rows - 1) {\n row += 1;\n\n if (row >= rows) {\n row = 0;\n column += 1;\n }\n }\n } else {\n row = Math.floor(i / slidesPerRow);\n column = i - row * slidesPerRow;\n }\n\n slide.css(getDirectionLabel('margin-top'), row !== 0 ? spaceBetween && `${spaceBetween}px` : '');\n };\n\n const updateWrapperSize = (slideSize, snapGrid, getDirectionLabel) => {\n const {\n spaceBetween,\n centeredSlides,\n roundLengths\n } = swiper.params;\n const {\n rows\n } = swiper.params.grid;\n swiper.virtualSize = (slideSize + spaceBetween) * slidesNumberEvenToRows;\n swiper.virtualSize = Math.ceil(swiper.virtualSize / rows) - spaceBetween;\n swiper.$wrapperEl.css({\n [getDirectionLabel('width')]: `${swiper.virtualSize + spaceBetween}px`\n });\n\n if (centeredSlides) {\n snapGrid.splice(0, snapGrid.length);\n const newSlidesGrid = [];\n\n for (let i = 0; i < snapGrid.length; i += 1) {\n let slidesGridItem = snapGrid[i];\n if (roundLengths) slidesGridItem = Math.floor(slidesGridItem);\n if (snapGrid[i] < swiper.virtualSize + snapGrid[0]) newSlidesGrid.push(slidesGridItem);\n }\n\n snapGrid.push(...newSlidesGrid);\n }\n };\n\n swiper.grid = {\n initSlides,\n updateSlide,\n updateWrapperSize\n };\n}","import { getWindow, getDocument } from 'ssr-window';\nimport $ from '../../shared/dom.js';\nexport default function HashNavigation({\n swiper,\n extendParams,\n emit,\n on\n}) {\n let initialized = false;\n const document = getDocument();\n const window = getWindow();\n extendParams({\n hashNavigation: {\n enabled: false,\n replaceState: false,\n watchState: false\n }\n });\n\n const onHashChange = () => {\n emit('hashChange');\n const newHash = document.location.hash.replace('#', '');\n const activeSlideHash = swiper.slides.eq(swiper.activeIndex).attr('data-hash');\n\n if (newHash !== activeSlideHash) {\n const newIndex = swiper.$wrapperEl.children(`.${swiper.params.slideClass}[data-hash=\"${newHash}\"]`).index();\n if (typeof newIndex === 'undefined') return;\n swiper.slideTo(newIndex);\n }\n };\n\n const setHash = () => {\n if (!initialized || !swiper.params.hashNavigation.enabled) return;\n\n if (swiper.params.hashNavigation.replaceState && window.history && window.history.replaceState) {\n window.history.replaceState(null, null, `#${swiper.slides.eq(swiper.activeIndex).attr('data-hash')}` || '');\n emit('hashSet');\n } else {\n const slide = swiper.slides.eq(swiper.activeIndex);\n const hash = slide.attr('data-hash') || slide.attr('data-history');\n document.location.hash = hash || '';\n emit('hashSet');\n }\n };\n\n const init = () => {\n if (!swiper.params.hashNavigation.enabled || swiper.params.history && swiper.params.history.enabled) return;\n initialized = true;\n const hash = document.location.hash.replace('#', '');\n\n if (hash) {\n const speed = 0;\n\n for (let i = 0, length = swiper.slides.length; i < length; i += 1) {\n const slide = swiper.slides.eq(i);\n const slideHash = slide.attr('data-hash') || slide.attr('data-history');\n\n if (slideHash === hash && !slide.hasClass(swiper.params.slideDuplicateClass)) {\n const index = slide.index();\n swiper.slideTo(index, speed, swiper.params.runCallbacksOnInit, true);\n }\n }\n }\n\n if (swiper.params.hashNavigation.watchState) {\n $(window).on('hashchange', onHashChange);\n }\n };\n\n const destroy = () => {\n if (swiper.params.hashNavigation.watchState) {\n $(window).off('hashchange', onHashChange);\n }\n };\n\n on('init', () => {\n if (swiper.params.hashNavigation.enabled) {\n init();\n }\n });\n on('destroy', () => {\n if (swiper.params.hashNavigation.enabled) {\n destroy();\n }\n });\n on('transitionEnd _freeModeNoMomentumRelease', () => {\n if (initialized) {\n setHash();\n }\n });\n on('slideChange', () => {\n if (initialized && swiper.params.cssMode) {\n setHash();\n }\n });\n}","import { getWindow } from 'ssr-window';\nexport default function History({\n swiper,\n extendParams,\n on\n}) {\n extendParams({\n history: {\n enabled: false,\n root: '',\n replaceState: false,\n key: 'slides'\n }\n });\n let initialized = false;\n let paths = {};\n\n const slugify = text => {\n return text.toString().replace(/\\s+/g, '-').replace(/[^\\w-]+/g, '').replace(/--+/g, '-').replace(/^-+/, '').replace(/-+$/, '');\n };\n\n const getPathValues = urlOverride => {\n const window = getWindow();\n let location;\n\n if (urlOverride) {\n location = new URL(urlOverride);\n } else {\n location = window.location;\n }\n\n const pathArray = location.pathname.slice(1).split('/').filter(part => part !== '');\n const total = pathArray.length;\n const key = pathArray[total - 2];\n const value = pathArray[total - 1];\n return {\n key,\n value\n };\n };\n\n const setHistory = (key, index) => {\n const window = getWindow();\n if (!initialized || !swiper.params.history.enabled) return;\n let location;\n\n if (swiper.params.url) {\n location = new URL(swiper.params.url);\n } else {\n location = window.location;\n }\n\n const slide = swiper.slides.eq(index);\n let value = slugify(slide.attr('data-history'));\n\n if (swiper.params.history.root.length > 0) {\n let root = swiper.params.history.root;\n if (root[root.length - 1] === '/') root = root.slice(0, root.length - 1);\n value = `${root}/${key}/${value}`;\n } else if (!location.pathname.includes(key)) {\n value = `${key}/${value}`;\n }\n\n const currentState = window.history.state;\n\n if (currentState && currentState.value === value) {\n return;\n }\n\n if (swiper.params.history.replaceState) {\n window.history.replaceState({\n value\n }, null, value);\n } else {\n window.history.pushState({\n value\n }, null, value);\n }\n };\n\n const scrollToSlide = (speed, value, runCallbacks) => {\n if (value) {\n for (let i = 0, length = swiper.slides.length; i < length; i += 1) {\n const slide = swiper.slides.eq(i);\n const slideHistory = slugify(slide.attr('data-history'));\n\n if (slideHistory === value && !slide.hasClass(swiper.params.slideDuplicateClass)) {\n const index = slide.index();\n swiper.slideTo(index, speed, runCallbacks);\n }\n }\n } else {\n swiper.slideTo(0, speed, runCallbacks);\n }\n };\n\n const setHistoryPopState = () => {\n paths = getPathValues(swiper.params.url);\n scrollToSlide(swiper.params.speed, swiper.paths.value, false);\n };\n\n const init = () => {\n const window = getWindow();\n if (!swiper.params.history) return;\n\n if (!window.history || !window.history.pushState) {\n swiper.params.history.enabled = false;\n swiper.params.hashNavigation.enabled = true;\n return;\n }\n\n initialized = true;\n paths = getPathValues(swiper.params.url);\n if (!paths.key && !paths.value) return;\n scrollToSlide(0, paths.value, swiper.params.runCallbacksOnInit);\n\n if (!swiper.params.history.replaceState) {\n window.addEventListener('popstate', setHistoryPopState);\n }\n };\n\n const destroy = () => {\n const window = getWindow();\n\n if (!swiper.params.history.replaceState) {\n window.removeEventListener('popstate', setHistoryPopState);\n }\n };\n\n on('init', () => {\n if (swiper.params.history.enabled) {\n init();\n }\n });\n on('destroy', () => {\n if (swiper.params.history.enabled) {\n destroy();\n }\n });\n on('transitionEnd _freeModeNoMomentumRelease', () => {\n if (initialized) {\n setHistory(swiper.params.history.key, swiper.activeIndex);\n }\n });\n on('slideChange', () => {\n if (initialized && swiper.params.cssMode) {\n setHistory(swiper.params.history.key, swiper.activeIndex);\n }\n });\n}","/* eslint-disable consistent-return */\nimport { getWindow, getDocument } from 'ssr-window';\nimport $ from '../../shared/dom.js';\nexport default function Keyboard({\n swiper,\n extendParams,\n on,\n emit\n}) {\n const document = getDocument();\n const window = getWindow();\n swiper.keyboard = {\n enabled: false\n };\n extendParams({\n keyboard: {\n enabled: false,\n onlyInViewport: true,\n pageUpDown: true\n }\n });\n\n function handle(event) {\n if (!swiper.enabled) return;\n const {\n rtlTranslate: rtl\n } = swiper;\n let e = event;\n if (e.originalEvent) e = e.originalEvent; // jquery fix\n\n const kc = e.keyCode || e.charCode;\n const pageUpDown = swiper.params.keyboard.pageUpDown;\n const isPageUp = pageUpDown && kc === 33;\n const isPageDown = pageUpDown && kc === 34;\n const isArrowLeft = kc === 37;\n const isArrowRight = kc === 39;\n const isArrowUp = kc === 38;\n const isArrowDown = kc === 40; // Directions locks\n\n if (!swiper.allowSlideNext && (swiper.isHorizontal() && isArrowRight || swiper.isVertical() && isArrowDown || isPageDown)) {\n return false;\n }\n\n if (!swiper.allowSlidePrev && (swiper.isHorizontal() && isArrowLeft || swiper.isVertical() && isArrowUp || isPageUp)) {\n return false;\n }\n\n if (e.shiftKey || e.altKey || e.ctrlKey || e.metaKey) {\n return undefined;\n }\n\n if (document.activeElement && document.activeElement.nodeName && (document.activeElement.nodeName.toLowerCase() === 'input' || document.activeElement.nodeName.toLowerCase() === 'textarea')) {\n return undefined;\n }\n\n if (swiper.params.keyboard.onlyInViewport && (isPageUp || isPageDown || isArrowLeft || isArrowRight || isArrowUp || isArrowDown)) {\n let inView = false; // Check that swiper should be inside of visible area of window\n\n if (swiper.$el.parents(`.${swiper.params.slideClass}`).length > 0 && swiper.$el.parents(`.${swiper.params.slideActiveClass}`).length === 0) {\n return undefined;\n }\n\n const $el = swiper.$el;\n const swiperWidth = $el[0].clientWidth;\n const swiperHeight = $el[0].clientHeight;\n const windowWidth = window.innerWidth;\n const windowHeight = window.innerHeight;\n const swiperOffset = swiper.$el.offset();\n if (rtl) swiperOffset.left -= swiper.$el[0].scrollLeft;\n const swiperCoord = [[swiperOffset.left, swiperOffset.top], [swiperOffset.left + swiperWidth, swiperOffset.top], [swiperOffset.left, swiperOffset.top + swiperHeight], [swiperOffset.left + swiperWidth, swiperOffset.top + swiperHeight]];\n\n for (let i = 0; i < swiperCoord.length; i += 1) {\n const point = swiperCoord[i];\n\n if (point[0] >= 0 && point[0] <= windowWidth && point[1] >= 0 && point[1] <= windowHeight) {\n if (point[0] === 0 && point[1] === 0) continue; // eslint-disable-line\n\n inView = true;\n }\n }\n\n if (!inView) return undefined;\n }\n\n if (swiper.isHorizontal()) {\n if (isPageUp || isPageDown || isArrowLeft || isArrowRight) {\n if (e.preventDefault) e.preventDefault();else e.returnValue = false;\n }\n\n if ((isPageDown || isArrowRight) && !rtl || (isPageUp || isArrowLeft) && rtl) swiper.slideNext();\n if ((isPageUp || isArrowLeft) && !rtl || (isPageDown || isArrowRight) && rtl) swiper.slidePrev();\n } else {\n if (isPageUp || isPageDown || isArrowUp || isArrowDown) {\n if (e.preventDefault) e.preventDefault();else e.returnValue = false;\n }\n\n if (isPageDown || isArrowDown) swiper.slideNext();\n if (isPageUp || isArrowUp) swiper.slidePrev();\n }\n\n emit('keyPress', kc);\n return undefined;\n }\n\n function enable() {\n if (swiper.keyboard.enabled) return;\n $(document).on('keydown', handle);\n swiper.keyboard.enabled = true;\n }\n\n function disable() {\n if (!swiper.keyboard.enabled) return;\n $(document).off('keydown', handle);\n swiper.keyboard.enabled = false;\n }\n\n on('init', () => {\n if (swiper.params.keyboard.enabled) {\n enable();\n }\n });\n on('destroy', () => {\n if (swiper.keyboard.enabled) {\n disable();\n }\n });\n Object.assign(swiper.keyboard, {\n enable,\n disable\n });\n}","import { getWindow } from 'ssr-window';\nimport $ from '../../shared/dom.js';\nexport default function Lazy({\n swiper,\n extendParams,\n on,\n emit\n}) {\n extendParams({\n lazy: {\n checkInView: false,\n enabled: false,\n loadPrevNext: false,\n loadPrevNextAmount: 1,\n loadOnTransitionStart: false,\n scrollingElement: '',\n elementClass: 'swiper-lazy',\n loadingClass: 'swiper-lazy-loading',\n loadedClass: 'swiper-lazy-loaded',\n preloaderClass: 'swiper-lazy-preloader'\n }\n });\n swiper.lazy = {};\n let scrollHandlerAttached = false;\n let initialImageLoaded = false;\n\n function loadInSlide(index, loadInDuplicate = true) {\n const params = swiper.params.lazy;\n if (typeof index === 'undefined') return;\n if (swiper.slides.length === 0) return;\n const isVirtual = swiper.virtual && swiper.params.virtual.enabled;\n const $slideEl = isVirtual ? swiper.$wrapperEl.children(`.${swiper.params.slideClass}[data-swiper-slide-index=\"${index}\"]`) : swiper.slides.eq(index);\n const $images = $slideEl.find(`.${params.elementClass}:not(.${params.loadedClass}):not(.${params.loadingClass})`);\n\n if ($slideEl.hasClass(params.elementClass) && !$slideEl.hasClass(params.loadedClass) && !$slideEl.hasClass(params.loadingClass)) {\n $images.push($slideEl[0]);\n }\n\n if ($images.length === 0) return;\n $images.each(imageEl => {\n const $imageEl = $(imageEl);\n $imageEl.addClass(params.loadingClass);\n const background = $imageEl.attr('data-background');\n const src = $imageEl.attr('data-src');\n const srcset = $imageEl.attr('data-srcset');\n const sizes = $imageEl.attr('data-sizes');\n const $pictureEl = $imageEl.parent('picture');\n swiper.loadImage($imageEl[0], src || background, srcset, sizes, false, () => {\n if (typeof swiper === 'undefined' || swiper === null || !swiper || swiper && !swiper.params || swiper.destroyed) return;\n\n if (background) {\n $imageEl.css('background-image', `url(\"${background}\")`);\n $imageEl.removeAttr('data-background');\n } else {\n if (srcset) {\n $imageEl.attr('srcset', srcset);\n $imageEl.removeAttr('data-srcset');\n }\n\n if (sizes) {\n $imageEl.attr('sizes', sizes);\n $imageEl.removeAttr('data-sizes');\n }\n\n if ($pictureEl.length) {\n $pictureEl.children('source').each(sourceEl => {\n const $source = $(sourceEl);\n\n if ($source.attr('data-srcset')) {\n $source.attr('srcset', $source.attr('data-srcset'));\n $source.removeAttr('data-srcset');\n }\n });\n }\n\n if (src) {\n $imageEl.attr('src', src);\n $imageEl.removeAttr('data-src');\n }\n }\n\n $imageEl.addClass(params.loadedClass).removeClass(params.loadingClass);\n $slideEl.find(`.${params.preloaderClass}`).remove();\n\n if (swiper.params.loop && loadInDuplicate) {\n const slideOriginalIndex = $slideEl.attr('data-swiper-slide-index');\n\n if ($slideEl.hasClass(swiper.params.slideDuplicateClass)) {\n const originalSlide = swiper.$wrapperEl.children(`[data-swiper-slide-index=\"${slideOriginalIndex}\"]:not(.${swiper.params.slideDuplicateClass})`);\n loadInSlide(originalSlide.index(), false);\n } else {\n const duplicatedSlide = swiper.$wrapperEl.children(`.${swiper.params.slideDuplicateClass}[data-swiper-slide-index=\"${slideOriginalIndex}\"]`);\n loadInSlide(duplicatedSlide.index(), false);\n }\n }\n\n emit('lazyImageReady', $slideEl[0], $imageEl[0]);\n\n if (swiper.params.autoHeight) {\n swiper.updateAutoHeight();\n }\n });\n emit('lazyImageLoad', $slideEl[0], $imageEl[0]);\n });\n }\n\n function load() {\n const {\n $wrapperEl,\n params: swiperParams,\n slides,\n activeIndex\n } = swiper;\n const isVirtual = swiper.virtual && swiperParams.virtual.enabled;\n const params = swiperParams.lazy;\n let slidesPerView = swiperParams.slidesPerView;\n\n if (slidesPerView === 'auto') {\n slidesPerView = 0;\n }\n\n function slideExist(index) {\n if (isVirtual) {\n if ($wrapperEl.children(`.${swiperParams.slideClass}[data-swiper-slide-index=\"${index}\"]`).length) {\n return true;\n }\n } else if (slides[index]) return true;\n\n return false;\n }\n\n function slideIndex(slideEl) {\n if (isVirtual) {\n return $(slideEl).attr('data-swiper-slide-index');\n }\n\n return $(slideEl).index();\n }\n\n if (!initialImageLoaded) initialImageLoaded = true;\n\n if (swiper.params.watchSlidesProgress) {\n $wrapperEl.children(`.${swiperParams.slideVisibleClass}`).each(slideEl => {\n const index = isVirtual ? $(slideEl).attr('data-swiper-slide-index') : $(slideEl).index();\n loadInSlide(index);\n });\n } else if (slidesPerView > 1) {\n for (let i = activeIndex; i < activeIndex + slidesPerView; i += 1) {\n if (slideExist(i)) loadInSlide(i);\n }\n } else {\n loadInSlide(activeIndex);\n }\n\n if (params.loadPrevNext) {\n if (slidesPerView > 1 || params.loadPrevNextAmount && params.loadPrevNextAmount > 1) {\n const amount = params.loadPrevNextAmount;\n const spv = slidesPerView;\n const maxIndex = Math.min(activeIndex + spv + Math.max(amount, spv), slides.length);\n const minIndex = Math.max(activeIndex - Math.max(spv, amount), 0); // Next Slides\n\n for (let i = activeIndex + slidesPerView; i < maxIndex; i += 1) {\n if (slideExist(i)) loadInSlide(i);\n } // Prev Slides\n\n\n for (let i = minIndex; i < activeIndex; i += 1) {\n if (slideExist(i)) loadInSlide(i);\n }\n } else {\n const nextSlide = $wrapperEl.children(`.${swiperParams.slideNextClass}`);\n if (nextSlide.length > 0) loadInSlide(slideIndex(nextSlide));\n const prevSlide = $wrapperEl.children(`.${swiperParams.slidePrevClass}`);\n if (prevSlide.length > 0) loadInSlide(slideIndex(prevSlide));\n }\n }\n }\n\n function checkInViewOnLoad() {\n const window = getWindow();\n if (!swiper || swiper.destroyed) return;\n const $scrollElement = swiper.params.lazy.scrollingElement ? $(swiper.params.lazy.scrollingElement) : $(window);\n const isWindow = $scrollElement[0] === window;\n const scrollElementWidth = isWindow ? window.innerWidth : $scrollElement[0].offsetWidth;\n const scrollElementHeight = isWindow ? window.innerHeight : $scrollElement[0].offsetHeight;\n const swiperOffset = swiper.$el.offset();\n const {\n rtlTranslate: rtl\n } = swiper;\n let inView = false;\n if (rtl) swiperOffset.left -= swiper.$el[0].scrollLeft;\n const swiperCoord = [[swiperOffset.left, swiperOffset.top], [swiperOffset.left + swiper.width, swiperOffset.top], [swiperOffset.left, swiperOffset.top + swiper.height], [swiperOffset.left + swiper.width, swiperOffset.top + swiper.height]];\n\n for (let i = 0; i < swiperCoord.length; i += 1) {\n const point = swiperCoord[i];\n\n if (point[0] >= 0 && point[0] <= scrollElementWidth && point[1] >= 0 && point[1] <= scrollElementHeight) {\n if (point[0] === 0 && point[1] === 0) continue; // eslint-disable-line\n\n inView = true;\n }\n }\n\n const passiveListener = swiper.touchEvents.start === 'touchstart' && swiper.support.passiveListener && swiper.params.passiveListeners ? {\n passive: true,\n capture: false\n } : false;\n\n if (inView) {\n load();\n $scrollElement.off('scroll', checkInViewOnLoad, passiveListener);\n } else if (!scrollHandlerAttached) {\n scrollHandlerAttached = true;\n $scrollElement.on('scroll', checkInViewOnLoad, passiveListener);\n }\n }\n\n on('beforeInit', () => {\n if (swiper.params.lazy.enabled && swiper.params.preloadImages) {\n swiper.params.preloadImages = false;\n }\n });\n on('init', () => {\n if (swiper.params.lazy.enabled) {\n if (swiper.params.lazy.checkInView) {\n checkInViewOnLoad();\n } else {\n load();\n }\n }\n });\n on('scroll', () => {\n if (swiper.params.freeMode && swiper.params.freeMode.enabled && !swiper.params.freeMode.sticky) {\n load();\n }\n });\n on('scrollbarDragMove resize _freeModeNoMomentumRelease', () => {\n if (swiper.params.lazy.enabled) {\n if (swiper.params.lazy.checkInView) {\n checkInViewOnLoad();\n } else {\n load();\n }\n }\n });\n on('transitionStart', () => {\n if (swiper.params.lazy.enabled) {\n if (swiper.params.lazy.loadOnTransitionStart || !swiper.params.lazy.loadOnTransitionStart && !initialImageLoaded) {\n if (swiper.params.lazy.checkInView) {\n checkInViewOnLoad();\n } else {\n load();\n }\n }\n }\n });\n on('transitionEnd', () => {\n if (swiper.params.lazy.enabled && !swiper.params.lazy.loadOnTransitionStart) {\n if (swiper.params.lazy.checkInView) {\n checkInViewOnLoad();\n } else {\n load();\n }\n }\n });\n on('slideChange', () => {\n const {\n lazy,\n cssMode,\n watchSlidesProgress,\n touchReleaseOnEdges,\n resistanceRatio\n } = swiper.params;\n\n if (lazy.enabled && (cssMode || watchSlidesProgress && (touchReleaseOnEdges || resistanceRatio === 0))) {\n load();\n }\n });\n Object.assign(swiper.lazy, {\n load,\n loadInSlide\n });\n}","import appendSlide from './methods/appendSlide.js';\nimport prependSlide from './methods/prependSlide.js';\nimport addSlide from './methods/addSlide.js';\nimport removeSlide from './methods/removeSlide.js';\nimport removeAllSlides from './methods/removeAllSlides.js';\nexport default function Manipulation({\n swiper\n}) {\n Object.assign(swiper, {\n appendSlide: appendSlide.bind(swiper),\n prependSlide: prependSlide.bind(swiper),\n addSlide: addSlide.bind(swiper),\n removeSlide: removeSlide.bind(swiper),\n removeAllSlides: removeAllSlides.bind(swiper)\n });\n}","export default function addSlide(index, slides) {\n const swiper = this;\n const {\n $wrapperEl,\n params,\n activeIndex\n } = swiper;\n let activeIndexBuffer = activeIndex;\n\n if (params.loop) {\n activeIndexBuffer -= swiper.loopedSlides;\n swiper.loopDestroy();\n swiper.slides = $wrapperEl.children(`.${params.slideClass}`);\n }\n\n const baseLength = swiper.slides.length;\n\n if (index <= 0) {\n swiper.prependSlide(slides);\n return;\n }\n\n if (index >= baseLength) {\n swiper.appendSlide(slides);\n return;\n }\n\n let newActiveIndex = activeIndexBuffer > index ? activeIndexBuffer + 1 : activeIndexBuffer;\n const slidesBuffer = [];\n\n for (let i = baseLength - 1; i >= index; i -= 1) {\n const currentSlide = swiper.slides.eq(i);\n currentSlide.remove();\n slidesBuffer.unshift(currentSlide);\n }\n\n if (typeof slides === 'object' && 'length' in slides) {\n for (let i = 0; i < slides.length; i += 1) {\n if (slides[i]) $wrapperEl.append(slides[i]);\n }\n\n newActiveIndex = activeIndexBuffer > index ? activeIndexBuffer + slides.length : activeIndexBuffer;\n } else {\n $wrapperEl.append(slides);\n }\n\n for (let i = 0; i < slidesBuffer.length; i += 1) {\n $wrapperEl.append(slidesBuffer[i]);\n }\n\n if (params.loop) {\n swiper.loopCreate();\n }\n\n if (!params.observer) {\n swiper.update();\n }\n\n if (params.loop) {\n swiper.slideTo(newActiveIndex + swiper.loopedSlides, 0, false);\n } else {\n swiper.slideTo(newActiveIndex, 0, false);\n }\n}","export default function appendSlide(slides) {\n const swiper = this;\n const {\n $wrapperEl,\n params\n } = swiper;\n\n if (params.loop) {\n swiper.loopDestroy();\n }\n\n if (typeof slides === 'object' && 'length' in slides) {\n for (let i = 0; i < slides.length; i += 1) {\n if (slides[i]) $wrapperEl.append(slides[i]);\n }\n } else {\n $wrapperEl.append(slides);\n }\n\n if (params.loop) {\n swiper.loopCreate();\n }\n\n if (!params.observer) {\n swiper.update();\n }\n}","export default function prependSlide(slides) {\n const swiper = this;\n const {\n params,\n $wrapperEl,\n activeIndex\n } = swiper;\n\n if (params.loop) {\n swiper.loopDestroy();\n }\n\n let newActiveIndex = activeIndex + 1;\n\n if (typeof slides === 'object' && 'length' in slides) {\n for (let i = 0; i < slides.length; i += 1) {\n if (slides[i]) $wrapperEl.prepend(slides[i]);\n }\n\n newActiveIndex = activeIndex + slides.length;\n } else {\n $wrapperEl.prepend(slides);\n }\n\n if (params.loop) {\n swiper.loopCreate();\n }\n\n if (!params.observer) {\n swiper.update();\n }\n\n swiper.slideTo(newActiveIndex, 0, false);\n}","export default function removeAllSlides() {\n const swiper = this;\n const slidesIndexes = [];\n\n for (let i = 0; i < swiper.slides.length; i += 1) {\n slidesIndexes.push(i);\n }\n\n swiper.removeSlide(slidesIndexes);\n}","export default function removeSlide(slidesIndexes) {\n const swiper = this;\n const {\n params,\n $wrapperEl,\n activeIndex\n } = swiper;\n let activeIndexBuffer = activeIndex;\n\n if (params.loop) {\n activeIndexBuffer -= swiper.loopedSlides;\n swiper.loopDestroy();\n swiper.slides = $wrapperEl.children(`.${params.slideClass}`);\n }\n\n let newActiveIndex = activeIndexBuffer;\n let indexToRemove;\n\n if (typeof slidesIndexes === 'object' && 'length' in slidesIndexes) {\n for (let i = 0; i < slidesIndexes.length; i += 1) {\n indexToRemove = slidesIndexes[i];\n if (swiper.slides[indexToRemove]) swiper.slides.eq(indexToRemove).remove();\n if (indexToRemove < newActiveIndex) newActiveIndex -= 1;\n }\n\n newActiveIndex = Math.max(newActiveIndex, 0);\n } else {\n indexToRemove = slidesIndexes;\n if (swiper.slides[indexToRemove]) swiper.slides.eq(indexToRemove).remove();\n if (indexToRemove < newActiveIndex) newActiveIndex -= 1;\n newActiveIndex = Math.max(newActiveIndex, 0);\n }\n\n if (params.loop) {\n swiper.loopCreate();\n }\n\n if (!params.observer) {\n swiper.update();\n }\n\n if (params.loop) {\n swiper.slideTo(newActiveIndex + swiper.loopedSlides, 0, false);\n } else {\n swiper.slideTo(newActiveIndex, 0, false);\n }\n}","/* eslint-disable consistent-return */\nimport { getWindow } from 'ssr-window';\nimport $ from '../../shared/dom.js';\nimport { now, nextTick } from '../../shared/utils.js';\nexport default function Mousewheel({\n swiper,\n extendParams,\n on,\n emit\n}) {\n const window = getWindow();\n extendParams({\n mousewheel: {\n enabled: false,\n releaseOnEdges: false,\n invert: false,\n forceToAxis: false,\n sensitivity: 1,\n eventsTarget: 'container',\n thresholdDelta: null,\n thresholdTime: null\n }\n });\n swiper.mousewheel = {\n enabled: false\n };\n let timeout;\n let lastScrollTime = now();\n let lastEventBeforeSnap;\n const recentWheelEvents = [];\n\n function normalize(e) {\n // Reasonable defaults\n const PIXEL_STEP = 10;\n const LINE_HEIGHT = 40;\n const PAGE_HEIGHT = 800;\n let sX = 0;\n let sY = 0; // spinX, spinY\n\n let pX = 0;\n let pY = 0; // pixelX, pixelY\n // Legacy\n\n if ('detail' in e) {\n sY = e.detail;\n }\n\n if ('wheelDelta' in e) {\n sY = -e.wheelDelta / 120;\n }\n\n if ('wheelDeltaY' in e) {\n sY = -e.wheelDeltaY / 120;\n }\n\n if ('wheelDeltaX' in e) {\n sX = -e.wheelDeltaX / 120;\n } // side scrolling on FF with DOMMouseScroll\n\n\n if ('axis' in e && e.axis === e.HORIZONTAL_AXIS) {\n sX = sY;\n sY = 0;\n }\n\n pX = sX * PIXEL_STEP;\n pY = sY * PIXEL_STEP;\n\n if ('deltaY' in e) {\n pY = e.deltaY;\n }\n\n if ('deltaX' in e) {\n pX = e.deltaX;\n }\n\n if (e.shiftKey && !pX) {\n // if user scrolls with shift he wants horizontal scroll\n pX = pY;\n pY = 0;\n }\n\n if ((pX || pY) && e.deltaMode) {\n if (e.deltaMode === 1) {\n // delta in LINE units\n pX *= LINE_HEIGHT;\n pY *= LINE_HEIGHT;\n } else {\n // delta in PAGE units\n pX *= PAGE_HEIGHT;\n pY *= PAGE_HEIGHT;\n }\n } // Fall-back if spin cannot be determined\n\n\n if (pX && !sX) {\n sX = pX < 1 ? -1 : 1;\n }\n\n if (pY && !sY) {\n sY = pY < 1 ? -1 : 1;\n }\n\n return {\n spinX: sX,\n spinY: sY,\n pixelX: pX,\n pixelY: pY\n };\n }\n\n function handleMouseEnter() {\n if (!swiper.enabled) return;\n swiper.mouseEntered = true;\n }\n\n function handleMouseLeave() {\n if (!swiper.enabled) return;\n swiper.mouseEntered = false;\n }\n\n function animateSlider(newEvent) {\n if (swiper.params.mousewheel.thresholdDelta && newEvent.delta < swiper.params.mousewheel.thresholdDelta) {\n // Prevent if delta of wheel scroll delta is below configured threshold\n return false;\n }\n\n if (swiper.params.mousewheel.thresholdTime && now() - lastScrollTime < swiper.params.mousewheel.thresholdTime) {\n // Prevent if time between scrolls is below configured threshold\n return false;\n } // If the movement is NOT big enough and\n // if the last time the user scrolled was too close to the current one (avoid continuously triggering the slider):\n // Don't go any further (avoid insignificant scroll movement).\n\n\n if (newEvent.delta >= 6 && now() - lastScrollTime < 60) {\n // Return false as a default\n return true;\n } // If user is scrolling towards the end:\n // If the slider hasn't hit the latest slide or\n // if the slider is a loop and\n // if the slider isn't moving right now:\n // Go to next slide and\n // emit a scroll event.\n // Else (the user is scrolling towards the beginning) and\n // if the slider hasn't hit the first slide or\n // if the slider is a loop and\n // if the slider isn't moving right now:\n // Go to prev slide and\n // emit a scroll event.\n\n\n if (newEvent.direction < 0) {\n if ((!swiper.isEnd || swiper.params.loop) && !swiper.animating) {\n swiper.slideNext();\n emit('scroll', newEvent.raw);\n }\n } else if ((!swiper.isBeginning || swiper.params.loop) && !swiper.animating) {\n swiper.slidePrev();\n emit('scroll', newEvent.raw);\n } // If you got here is because an animation has been triggered so store the current time\n\n\n lastScrollTime = new window.Date().getTime(); // Return false as a default\n\n return false;\n }\n\n function releaseScroll(newEvent) {\n const params = swiper.params.mousewheel;\n\n if (newEvent.direction < 0) {\n if (swiper.isEnd && !swiper.params.loop && params.releaseOnEdges) {\n // Return true to animate scroll on edges\n return true;\n }\n } else if (swiper.isBeginning && !swiper.params.loop && params.releaseOnEdges) {\n // Return true to animate scroll on edges\n return true;\n }\n\n return false;\n }\n\n function handle(event) {\n let e = event;\n let disableParentSwiper = true;\n if (!swiper.enabled) return;\n const params = swiper.params.mousewheel;\n\n if (swiper.params.cssMode) {\n e.preventDefault();\n }\n\n let target = swiper.$el;\n\n if (swiper.params.mousewheel.eventsTarget !== 'container') {\n target = $(swiper.params.mousewheel.eventsTarget);\n }\n\n if (!swiper.mouseEntered && !target[0].contains(e.target) && !params.releaseOnEdges) return true;\n if (e.originalEvent) e = e.originalEvent; // jquery fix\n\n let delta = 0;\n const rtlFactor = swiper.rtlTranslate ? -1 : 1;\n const data = normalize(e);\n\n if (params.forceToAxis) {\n if (swiper.isHorizontal()) {\n if (Math.abs(data.pixelX) > Math.abs(data.pixelY)) delta = -data.pixelX * rtlFactor;else return true;\n } else if (Math.abs(data.pixelY) > Math.abs(data.pixelX)) delta = -data.pixelY;else return true;\n } else {\n delta = Math.abs(data.pixelX) > Math.abs(data.pixelY) ? -data.pixelX * rtlFactor : -data.pixelY;\n }\n\n if (delta === 0) return true;\n if (params.invert) delta = -delta; // Get the scroll positions\n\n let positions = swiper.getTranslate() + delta * params.sensitivity;\n if (positions >= swiper.minTranslate()) positions = swiper.minTranslate();\n if (positions <= swiper.maxTranslate()) positions = swiper.maxTranslate(); // When loop is true:\n // the disableParentSwiper will be true.\n // When loop is false:\n // if the scroll positions is not on edge,\n // then the disableParentSwiper will be true.\n // if the scroll on edge positions,\n // then the disableParentSwiper will be false.\n\n disableParentSwiper = swiper.params.loop ? true : !(positions === swiper.minTranslate() || positions === swiper.maxTranslate());\n if (disableParentSwiper && swiper.params.nested) e.stopPropagation();\n\n if (!swiper.params.freeMode || !swiper.params.freeMode.enabled) {\n // Register the new event in a variable which stores the relevant data\n const newEvent = {\n time: now(),\n delta: Math.abs(delta),\n direction: Math.sign(delta),\n raw: event\n }; // Keep the most recent events\n\n if (recentWheelEvents.length >= 2) {\n recentWheelEvents.shift(); // only store the last N events\n }\n\n const prevEvent = recentWheelEvents.length ? recentWheelEvents[recentWheelEvents.length - 1] : undefined;\n recentWheelEvents.push(newEvent); // If there is at least one previous recorded event:\n // If direction has changed or\n // if the scroll is quicker than the previous one:\n // Animate the slider.\n // Else (this is the first time the wheel is moved):\n // Animate the slider.\n\n if (prevEvent) {\n if (newEvent.direction !== prevEvent.direction || newEvent.delta > prevEvent.delta || newEvent.time > prevEvent.time + 150) {\n animateSlider(newEvent);\n }\n } else {\n animateSlider(newEvent);\n } // If it's time to release the scroll:\n // Return now so you don't hit the preventDefault.\n\n\n if (releaseScroll(newEvent)) {\n return true;\n }\n } else {\n // Freemode or scrollContainer:\n // If we recently snapped after a momentum scroll, then ignore wheel events\n // to give time for the deceleration to finish. Stop ignoring after 500 msecs\n // or if it's a new scroll (larger delta or inverse sign as last event before\n // an end-of-momentum snap).\n const newEvent = {\n time: now(),\n delta: Math.abs(delta),\n direction: Math.sign(delta)\n };\n const ignoreWheelEvents = lastEventBeforeSnap && newEvent.time < lastEventBeforeSnap.time + 500 && newEvent.delta <= lastEventBeforeSnap.delta && newEvent.direction === lastEventBeforeSnap.direction;\n\n if (!ignoreWheelEvents) {\n lastEventBeforeSnap = undefined;\n\n if (swiper.params.loop) {\n swiper.loopFix();\n }\n\n let position = swiper.getTranslate() + delta * params.sensitivity;\n const wasBeginning = swiper.isBeginning;\n const wasEnd = swiper.isEnd;\n if (position >= swiper.minTranslate()) position = swiper.minTranslate();\n if (position <= swiper.maxTranslate()) position = swiper.maxTranslate();\n swiper.setTransition(0);\n swiper.setTranslate(position);\n swiper.updateProgress();\n swiper.updateActiveIndex();\n swiper.updateSlidesClasses();\n\n if (!wasBeginning && swiper.isBeginning || !wasEnd && swiper.isEnd) {\n swiper.updateSlidesClasses();\n }\n\n if (swiper.params.freeMode.sticky) {\n // When wheel scrolling starts with sticky (aka snap) enabled, then detect\n // the end of a momentum scroll by storing recent (N=15?) wheel events.\n // 1. do all N events have decreasing or same (absolute value) delta?\n // 2. did all N events arrive in the last M (M=500?) msecs?\n // 3. does the earliest event have an (absolute value) delta that's\n // at least P (P=1?) larger than the most recent event's delta?\n // 4. does the latest event have a delta that's smaller than Q (Q=6?) pixels?\n // If 1-4 are \"yes\" then we're near the end of a momentum scroll deceleration.\n // Snap immediately and ignore remaining wheel events in this scroll.\n // See comment above for \"remaining wheel events in this scroll\" determination.\n // If 1-4 aren't satisfied, then wait to snap until 500ms after the last event.\n clearTimeout(timeout);\n timeout = undefined;\n\n if (recentWheelEvents.length >= 15) {\n recentWheelEvents.shift(); // only store the last N events\n }\n\n const prevEvent = recentWheelEvents.length ? recentWheelEvents[recentWheelEvents.length - 1] : undefined;\n const firstEvent = recentWheelEvents[0];\n recentWheelEvents.push(newEvent);\n\n if (prevEvent && (newEvent.delta > prevEvent.delta || newEvent.direction !== prevEvent.direction)) {\n // Increasing or reverse-sign delta means the user started scrolling again. Clear the wheel event log.\n recentWheelEvents.splice(0);\n } else if (recentWheelEvents.length >= 15 && newEvent.time - firstEvent.time < 500 && firstEvent.delta - newEvent.delta >= 1 && newEvent.delta <= 6) {\n // We're at the end of the deceleration of a momentum scroll, so there's no need\n // to wait for more events. Snap ASAP on the next tick.\n // Also, because there's some remaining momentum we'll bias the snap in the\n // direction of the ongoing scroll because it's better UX for the scroll to snap\n // in the same direction as the scroll instead of reversing to snap. Therefore,\n // if it's already scrolled more than 20% in the current direction, keep going.\n const snapToThreshold = delta > 0 ? 0.8 : 0.2;\n lastEventBeforeSnap = newEvent;\n recentWheelEvents.splice(0);\n timeout = nextTick(() => {\n swiper.slideToClosest(swiper.params.speed, true, undefined, snapToThreshold);\n }, 0); // no delay; move on next tick\n }\n\n if (!timeout) {\n // if we get here, then we haven't detected the end of a momentum scroll, so\n // we'll consider a scroll \"complete\" when there haven't been any wheel events\n // for 500ms.\n timeout = nextTick(() => {\n const snapToThreshold = 0.5;\n lastEventBeforeSnap = newEvent;\n recentWheelEvents.splice(0);\n swiper.slideToClosest(swiper.params.speed, true, undefined, snapToThreshold);\n }, 500);\n }\n } // Emit event\n\n\n if (!ignoreWheelEvents) emit('scroll', e); // Stop autoplay\n\n if (swiper.params.autoplay && swiper.params.autoplayDisableOnInteraction) swiper.autoplay.stop(); // Return page scroll on edge positions\n\n if (position === swiper.minTranslate() || position === swiper.maxTranslate()) return true;\n }\n }\n\n if (e.preventDefault) e.preventDefault();else e.returnValue = false;\n return false;\n }\n\n function events(method) {\n let target = swiper.$el;\n\n if (swiper.params.mousewheel.eventsTarget !== 'container') {\n target = $(swiper.params.mousewheel.eventsTarget);\n }\n\n target[method]('mouseenter', handleMouseEnter);\n target[method]('mouseleave', handleMouseLeave);\n target[method]('wheel', handle);\n }\n\n function enable() {\n if (swiper.params.cssMode) {\n swiper.wrapperEl.removeEventListener('wheel', handle);\n return true;\n }\n\n if (swiper.mousewheel.enabled) return false;\n events('on');\n swiper.mousewheel.enabled = true;\n return true;\n }\n\n function disable() {\n if (swiper.params.cssMode) {\n swiper.wrapperEl.addEventListener(event, handle);\n return true;\n }\n\n if (!swiper.mousewheel.enabled) return false;\n events('off');\n swiper.mousewheel.enabled = false;\n return true;\n }\n\n on('init', () => {\n if (!swiper.params.mousewheel.enabled && swiper.params.cssMode) {\n disable();\n }\n\n if (swiper.params.mousewheel.enabled) enable();\n });\n on('destroy', () => {\n if (swiper.params.cssMode) {\n enable();\n }\n\n if (swiper.mousewheel.enabled) disable();\n });\n Object.assign(swiper.mousewheel, {\n enable,\n disable\n });\n}","import createElementIfNotDefined from '../../shared/create-element-if-not-defined.js';\nimport $ from '../../shared/dom.js';\nexport default function Navigation({\n swiper,\n extendParams,\n on,\n emit\n}) {\n extendParams({\n navigation: {\n nextEl: null,\n prevEl: null,\n hideOnClick: false,\n disabledClass: 'swiper-button-disabled',\n hiddenClass: 'swiper-button-hidden',\n lockClass: 'swiper-button-lock'\n }\n });\n swiper.navigation = {\n nextEl: null,\n $nextEl: null,\n prevEl: null,\n $prevEl: null\n };\n\n function getEl(el) {\n let $el;\n\n if (el) {\n $el = $(el);\n\n if (swiper.params.uniqueNavElements && typeof el === 'string' && $el.length > 1 && swiper.$el.find(el).length === 1) {\n $el = swiper.$el.find(el);\n }\n }\n\n return $el;\n }\n\n function toggleEl($el, disabled) {\n const params = swiper.params.navigation;\n\n if ($el && $el.length > 0) {\n $el[disabled ? 'addClass' : 'removeClass'](params.disabledClass);\n if ($el[0] && $el[0].tagName === 'BUTTON') $el[0].disabled = disabled;\n\n if (swiper.params.watchOverflow && swiper.enabled) {\n $el[swiper.isLocked ? 'addClass' : 'removeClass'](params.lockClass);\n }\n }\n }\n\n function update() {\n // Update Navigation Buttons\n if (swiper.params.loop) return;\n const {\n $nextEl,\n $prevEl\n } = swiper.navigation;\n toggleEl($prevEl, swiper.isBeginning && !swiper.params.rewind);\n toggleEl($nextEl, swiper.isEnd && !swiper.params.rewind);\n }\n\n function onPrevClick(e) {\n e.preventDefault();\n if (swiper.isBeginning && !swiper.params.loop && !swiper.params.rewind) return;\n swiper.slidePrev();\n }\n\n function onNextClick(e) {\n e.preventDefault();\n if (swiper.isEnd && !swiper.params.loop && !swiper.params.rewind) return;\n swiper.slideNext();\n }\n\n function init() {\n const params = swiper.params.navigation;\n swiper.params.navigation = createElementIfNotDefined(swiper, swiper.originalParams.navigation, swiper.params.navigation, {\n nextEl: 'swiper-button-next',\n prevEl: 'swiper-button-prev'\n });\n if (!(params.nextEl || params.prevEl)) return;\n const $nextEl = getEl(params.nextEl);\n const $prevEl = getEl(params.prevEl);\n\n if ($nextEl && $nextEl.length > 0) {\n $nextEl.on('click', onNextClick);\n }\n\n if ($prevEl && $prevEl.length > 0) {\n $prevEl.on('click', onPrevClick);\n }\n\n Object.assign(swiper.navigation, {\n $nextEl,\n nextEl: $nextEl && $nextEl[0],\n $prevEl,\n prevEl: $prevEl && $prevEl[0]\n });\n\n if (!swiper.enabled) {\n if ($nextEl) $nextEl.addClass(params.lockClass);\n if ($prevEl) $prevEl.addClass(params.lockClass);\n }\n }\n\n function destroy() {\n const {\n $nextEl,\n $prevEl\n } = swiper.navigation;\n\n if ($nextEl && $nextEl.length) {\n $nextEl.off('click', onNextClick);\n $nextEl.removeClass(swiper.params.navigation.disabledClass);\n }\n\n if ($prevEl && $prevEl.length) {\n $prevEl.off('click', onPrevClick);\n $prevEl.removeClass(swiper.params.navigation.disabledClass);\n }\n }\n\n on('init', () => {\n init();\n update();\n });\n on('toEdge fromEdge lock unlock', () => {\n update();\n });\n on('destroy', () => {\n destroy();\n });\n on('enable disable', () => {\n const {\n $nextEl,\n $prevEl\n } = swiper.navigation;\n\n if ($nextEl) {\n $nextEl[swiper.enabled ? 'removeClass' : 'addClass'](swiper.params.navigation.lockClass);\n }\n\n if ($prevEl) {\n $prevEl[swiper.enabled ? 'removeClass' : 'addClass'](swiper.params.navigation.lockClass);\n }\n });\n on('click', (_s, e) => {\n const {\n $nextEl,\n $prevEl\n } = swiper.navigation;\n const targetEl = e.target;\n\n if (swiper.params.navigation.hideOnClick && !$(targetEl).is($prevEl) && !$(targetEl).is($nextEl)) {\n if (swiper.pagination && swiper.params.pagination && swiper.params.pagination.clickable && (swiper.pagination.el === targetEl || swiper.pagination.el.contains(targetEl))) return;\n let isHidden;\n\n if ($nextEl) {\n isHidden = $nextEl.hasClass(swiper.params.navigation.hiddenClass);\n } else if ($prevEl) {\n isHidden = $prevEl.hasClass(swiper.params.navigation.hiddenClass);\n }\n\n if (isHidden === true) {\n emit('navigationShow');\n } else {\n emit('navigationHide');\n }\n\n if ($nextEl) {\n $nextEl.toggleClass(swiper.params.navigation.hiddenClass);\n }\n\n if ($prevEl) {\n $prevEl.toggleClass(swiper.params.navigation.hiddenClass);\n }\n }\n });\n Object.assign(swiper.navigation, {\n update,\n init,\n destroy\n });\n}","import $ from '../../shared/dom.js';\nimport classesToSelector from '../../shared/classes-to-selector.js';\nimport createElementIfNotDefined from '../../shared/create-element-if-not-defined.js';\nexport default function Pagination({\n swiper,\n extendParams,\n on,\n emit\n}) {\n const pfx = 'swiper-pagination';\n extendParams({\n pagination: {\n el: null,\n bulletElement: 'span',\n clickable: false,\n hideOnClick: false,\n renderBullet: null,\n renderProgressbar: null,\n renderFraction: null,\n renderCustom: null,\n progressbarOpposite: false,\n type: 'bullets',\n // 'bullets' or 'progressbar' or 'fraction' or 'custom'\n dynamicBullets: false,\n dynamicMainBullets: 1,\n formatFractionCurrent: number => number,\n formatFractionTotal: number => number,\n bulletClass: `${pfx}-bullet`,\n bulletActiveClass: `${pfx}-bullet-active`,\n modifierClass: `${pfx}-`,\n currentClass: `${pfx}-current`,\n totalClass: `${pfx}-total`,\n hiddenClass: `${pfx}-hidden`,\n progressbarFillClass: `${pfx}-progressbar-fill`,\n progressbarOppositeClass: `${pfx}-progressbar-opposite`,\n clickableClass: `${pfx}-clickable`,\n lockClass: `${pfx}-lock`,\n horizontalClass: `${pfx}-horizontal`,\n verticalClass: `${pfx}-vertical`\n }\n });\n swiper.pagination = {\n el: null,\n $el: null,\n bullets: []\n };\n let bulletSize;\n let dynamicBulletIndex = 0;\n\n function isPaginationDisabled() {\n return !swiper.params.pagination.el || !swiper.pagination.el || !swiper.pagination.$el || swiper.pagination.$el.length === 0;\n }\n\n function setSideBullets($bulletEl, position) {\n const {\n bulletActiveClass\n } = swiper.params.pagination;\n $bulletEl[position]().addClass(`${bulletActiveClass}-${position}`)[position]().addClass(`${bulletActiveClass}-${position}-${position}`);\n }\n\n function update() {\n // Render || Update Pagination bullets/items\n const rtl = swiper.rtl;\n const params = swiper.params.pagination;\n if (isPaginationDisabled()) return;\n const slidesLength = swiper.virtual && swiper.params.virtual.enabled ? swiper.virtual.slides.length : swiper.slides.length;\n const $el = swiper.pagination.$el; // Current/Total\n\n let current;\n const total = swiper.params.loop ? Math.ceil((slidesLength - swiper.loopedSlides * 2) / swiper.params.slidesPerGroup) : swiper.snapGrid.length;\n\n if (swiper.params.loop) {\n current = Math.ceil((swiper.activeIndex - swiper.loopedSlides) / swiper.params.slidesPerGroup);\n\n if (current > slidesLength - 1 - swiper.loopedSlides * 2) {\n current -= slidesLength - swiper.loopedSlides * 2;\n }\n\n if (current > total - 1) current -= total;\n if (current < 0 && swiper.params.paginationType !== 'bullets') current = total + current;\n } else if (typeof swiper.snapIndex !== 'undefined') {\n current = swiper.snapIndex;\n } else {\n current = swiper.activeIndex || 0;\n } // Types\n\n\n if (params.type === 'bullets' && swiper.pagination.bullets && swiper.pagination.bullets.length > 0) {\n const bullets = swiper.pagination.bullets;\n let firstIndex;\n let lastIndex;\n let midIndex;\n\n if (params.dynamicBullets) {\n bulletSize = bullets.eq(0)[swiper.isHorizontal() ? 'outerWidth' : 'outerHeight'](true);\n $el.css(swiper.isHorizontal() ? 'width' : 'height', `${bulletSize * (params.dynamicMainBullets + 4)}px`);\n\n if (params.dynamicMainBullets > 1 && swiper.previousIndex !== undefined) {\n dynamicBulletIndex += current - (swiper.previousIndex - swiper.loopedSlides || 0);\n\n if (dynamicBulletIndex > params.dynamicMainBullets - 1) {\n dynamicBulletIndex = params.dynamicMainBullets - 1;\n } else if (dynamicBulletIndex < 0) {\n dynamicBulletIndex = 0;\n }\n }\n\n firstIndex = Math.max(current - dynamicBulletIndex, 0);\n lastIndex = firstIndex + (Math.min(bullets.length, params.dynamicMainBullets) - 1);\n midIndex = (lastIndex + firstIndex) / 2;\n }\n\n bullets.removeClass(['', '-next', '-next-next', '-prev', '-prev-prev', '-main'].map(suffix => `${params.bulletActiveClass}${suffix}`).join(' '));\n\n if ($el.length > 1) {\n bullets.each(bullet => {\n const $bullet = $(bullet);\n const bulletIndex = $bullet.index();\n\n if (bulletIndex === current) {\n $bullet.addClass(params.bulletActiveClass);\n }\n\n if (params.dynamicBullets) {\n if (bulletIndex >= firstIndex && bulletIndex <= lastIndex) {\n $bullet.addClass(`${params.bulletActiveClass}-main`);\n }\n\n if (bulletIndex === firstIndex) {\n setSideBullets($bullet, 'prev');\n }\n\n if (bulletIndex === lastIndex) {\n setSideBullets($bullet, 'next');\n }\n }\n });\n } else {\n const $bullet = bullets.eq(current);\n const bulletIndex = $bullet.index();\n $bullet.addClass(params.bulletActiveClass);\n\n if (params.dynamicBullets) {\n const $firstDisplayedBullet = bullets.eq(firstIndex);\n const $lastDisplayedBullet = bullets.eq(lastIndex);\n\n for (let i = firstIndex; i <= lastIndex; i += 1) {\n bullets.eq(i).addClass(`${params.bulletActiveClass}-main`);\n }\n\n if (swiper.params.loop) {\n if (bulletIndex >= bullets.length) {\n for (let i = params.dynamicMainBullets; i >= 0; i -= 1) {\n bullets.eq(bullets.length - i).addClass(`${params.bulletActiveClass}-main`);\n }\n\n bullets.eq(bullets.length - params.dynamicMainBullets - 1).addClass(`${params.bulletActiveClass}-prev`);\n } else {\n setSideBullets($firstDisplayedBullet, 'prev');\n setSideBullets($lastDisplayedBullet, 'next');\n }\n } else {\n setSideBullets($firstDisplayedBullet, 'prev');\n setSideBullets($lastDisplayedBullet, 'next');\n }\n }\n }\n\n if (params.dynamicBullets) {\n const dynamicBulletsLength = Math.min(bullets.length, params.dynamicMainBullets + 4);\n const bulletsOffset = (bulletSize * dynamicBulletsLength - bulletSize) / 2 - midIndex * bulletSize;\n const offsetProp = rtl ? 'right' : 'left';\n bullets.css(swiper.isHorizontal() ? offsetProp : 'top', `${bulletsOffset}px`);\n }\n }\n\n if (params.type === 'fraction') {\n $el.find(classesToSelector(params.currentClass)).text(params.formatFractionCurrent(current + 1));\n $el.find(classesToSelector(params.totalClass)).text(params.formatFractionTotal(total));\n }\n\n if (params.type === 'progressbar') {\n let progressbarDirection;\n\n if (params.progressbarOpposite) {\n progressbarDirection = swiper.isHorizontal() ? 'vertical' : 'horizontal';\n } else {\n progressbarDirection = swiper.isHorizontal() ? 'horizontal' : 'vertical';\n }\n\n const scale = (current + 1) / total;\n let scaleX = 1;\n let scaleY = 1;\n\n if (progressbarDirection === 'horizontal') {\n scaleX = scale;\n } else {\n scaleY = scale;\n }\n\n $el.find(classesToSelector(params.progressbarFillClass)).transform(`translate3d(0,0,0) scaleX(${scaleX}) scaleY(${scaleY})`).transition(swiper.params.speed);\n }\n\n if (params.type === 'custom' && params.renderCustom) {\n $el.html(params.renderCustom(swiper, current + 1, total));\n emit('paginationRender', $el[0]);\n } else {\n emit('paginationUpdate', $el[0]);\n }\n\n if (swiper.params.watchOverflow && swiper.enabled) {\n $el[swiper.isLocked ? 'addClass' : 'removeClass'](params.lockClass);\n }\n }\n\n function render() {\n // Render Container\n const params = swiper.params.pagination;\n if (isPaginationDisabled()) return;\n const slidesLength = swiper.virtual && swiper.params.virtual.enabled ? swiper.virtual.slides.length : swiper.slides.length;\n const $el = swiper.pagination.$el;\n let paginationHTML = '';\n\n if (params.type === 'bullets') {\n let numberOfBullets = swiper.params.loop ? Math.ceil((slidesLength - swiper.loopedSlides * 2) / swiper.params.slidesPerGroup) : swiper.snapGrid.length;\n\n if (swiper.params.freeMode && swiper.params.freeMode.enabled && !swiper.params.loop && numberOfBullets > slidesLength) {\n numberOfBullets = slidesLength;\n }\n\n for (let i = 0; i < numberOfBullets; i += 1) {\n if (params.renderBullet) {\n paginationHTML += params.renderBullet.call(swiper, i, params.bulletClass);\n } else {\n paginationHTML += `<${params.bulletElement} class=\"${params.bulletClass}\">`;\n }\n }\n\n $el.html(paginationHTML);\n swiper.pagination.bullets = $el.find(classesToSelector(params.bulletClass));\n }\n\n if (params.type === 'fraction') {\n if (params.renderFraction) {\n paginationHTML = params.renderFraction.call(swiper, params.currentClass, params.totalClass);\n } else {\n paginationHTML = `` + ' / ' + ``;\n }\n\n $el.html(paginationHTML);\n }\n\n if (params.type === 'progressbar') {\n if (params.renderProgressbar) {\n paginationHTML = params.renderProgressbar.call(swiper, params.progressbarFillClass);\n } else {\n paginationHTML = ``;\n }\n\n $el.html(paginationHTML);\n }\n\n if (params.type !== 'custom') {\n emit('paginationRender', swiper.pagination.$el[0]);\n }\n }\n\n function init() {\n swiper.params.pagination = createElementIfNotDefined(swiper, swiper.originalParams.pagination, swiper.params.pagination, {\n el: 'swiper-pagination'\n });\n const params = swiper.params.pagination;\n if (!params.el) return;\n let $el = $(params.el);\n if ($el.length === 0) return;\n\n if (swiper.params.uniqueNavElements && typeof params.el === 'string' && $el.length > 1) {\n $el = swiper.$el.find(params.el); // check if it belongs to another nested Swiper\n\n if ($el.length > 1) {\n $el = $el.filter(el => {\n if ($(el).parents('.swiper')[0] !== swiper.el) return false;\n return true;\n });\n }\n }\n\n if (params.type === 'bullets' && params.clickable) {\n $el.addClass(params.clickableClass);\n }\n\n $el.addClass(params.modifierClass + params.type);\n $el.addClass(params.modifierClass + swiper.params.direction);\n\n if (params.type === 'bullets' && params.dynamicBullets) {\n $el.addClass(`${params.modifierClass}${params.type}-dynamic`);\n dynamicBulletIndex = 0;\n\n if (params.dynamicMainBullets < 1) {\n params.dynamicMainBullets = 1;\n }\n }\n\n if (params.type === 'progressbar' && params.progressbarOpposite) {\n $el.addClass(params.progressbarOppositeClass);\n }\n\n if (params.clickable) {\n $el.on('click', classesToSelector(params.bulletClass), function onClick(e) {\n e.preventDefault();\n let index = $(this).index() * swiper.params.slidesPerGroup;\n if (swiper.params.loop) index += swiper.loopedSlides;\n swiper.slideTo(index);\n });\n }\n\n Object.assign(swiper.pagination, {\n $el,\n el: $el[0]\n });\n\n if (!swiper.enabled) {\n $el.addClass(params.lockClass);\n }\n }\n\n function destroy() {\n const params = swiper.params.pagination;\n if (isPaginationDisabled()) return;\n const $el = swiper.pagination.$el;\n $el.removeClass(params.hiddenClass);\n $el.removeClass(params.modifierClass + params.type);\n $el.removeClass(params.modifierClass + swiper.params.direction);\n if (swiper.pagination.bullets && swiper.pagination.bullets.removeClass) swiper.pagination.bullets.removeClass(params.bulletActiveClass);\n\n if (params.clickable) {\n $el.off('click', classesToSelector(params.bulletClass));\n }\n }\n\n on('init', () => {\n init();\n render();\n update();\n });\n on('activeIndexChange', () => {\n if (swiper.params.loop) {\n update();\n } else if (typeof swiper.snapIndex === 'undefined') {\n update();\n }\n });\n on('snapIndexChange', () => {\n if (!swiper.params.loop) {\n update();\n }\n });\n on('slidesLengthChange', () => {\n if (swiper.params.loop) {\n render();\n update();\n }\n });\n on('snapGridLengthChange', () => {\n if (!swiper.params.loop) {\n render();\n update();\n }\n });\n on('destroy', () => {\n destroy();\n });\n on('enable disable', () => {\n const {\n $el\n } = swiper.pagination;\n\n if ($el) {\n $el[swiper.enabled ? 'removeClass' : 'addClass'](swiper.params.pagination.lockClass);\n }\n });\n on('lock unlock', () => {\n update();\n });\n on('click', (_s, e) => {\n const targetEl = e.target;\n const {\n $el\n } = swiper.pagination;\n\n if (swiper.params.pagination.el && swiper.params.pagination.hideOnClick && $el.length > 0 && !$(targetEl).hasClass(swiper.params.pagination.bulletClass)) {\n if (swiper.navigation && (swiper.navigation.nextEl && targetEl === swiper.navigation.nextEl || swiper.navigation.prevEl && targetEl === swiper.navigation.prevEl)) return;\n const isHidden = $el.hasClass(swiper.params.pagination.hiddenClass);\n\n if (isHidden === true) {\n emit('paginationShow');\n } else {\n emit('paginationHide');\n }\n\n $el.toggleClass(swiper.params.pagination.hiddenClass);\n }\n });\n Object.assign(swiper.pagination, {\n render,\n update,\n init,\n destroy\n });\n}","import $ from '../../shared/dom.js';\nexport default function Parallax({\n swiper,\n extendParams,\n on\n}) {\n extendParams({\n parallax: {\n enabled: false\n }\n });\n\n const setTransform = (el, progress) => {\n const {\n rtl\n } = swiper;\n const $el = $(el);\n const rtlFactor = rtl ? -1 : 1;\n const p = $el.attr('data-swiper-parallax') || '0';\n let x = $el.attr('data-swiper-parallax-x');\n let y = $el.attr('data-swiper-parallax-y');\n const scale = $el.attr('data-swiper-parallax-scale');\n const opacity = $el.attr('data-swiper-parallax-opacity');\n\n if (x || y) {\n x = x || '0';\n y = y || '0';\n } else if (swiper.isHorizontal()) {\n x = p;\n y = '0';\n } else {\n y = p;\n x = '0';\n }\n\n if (x.indexOf('%') >= 0) {\n x = `${parseInt(x, 10) * progress * rtlFactor}%`;\n } else {\n x = `${x * progress * rtlFactor}px`;\n }\n\n if (y.indexOf('%') >= 0) {\n y = `${parseInt(y, 10) * progress}%`;\n } else {\n y = `${y * progress}px`;\n }\n\n if (typeof opacity !== 'undefined' && opacity !== null) {\n const currentOpacity = opacity - (opacity - 1) * (1 - Math.abs(progress));\n $el[0].style.opacity = currentOpacity;\n }\n\n if (typeof scale === 'undefined' || scale === null) {\n $el.transform(`translate3d(${x}, ${y}, 0px)`);\n } else {\n const currentScale = scale - (scale - 1) * (1 - Math.abs(progress));\n $el.transform(`translate3d(${x}, ${y}, 0px) scale(${currentScale})`);\n }\n };\n\n const setTranslate = () => {\n const {\n $el,\n slides,\n progress,\n snapGrid\n } = swiper;\n $el.children('[data-swiper-parallax], [data-swiper-parallax-x], [data-swiper-parallax-y], [data-swiper-parallax-opacity], [data-swiper-parallax-scale]').each(el => {\n setTransform(el, progress);\n });\n slides.each((slideEl, slideIndex) => {\n let slideProgress = slideEl.progress;\n\n if (swiper.params.slidesPerGroup > 1 && swiper.params.slidesPerView !== 'auto') {\n slideProgress += Math.ceil(slideIndex / 2) - progress * (snapGrid.length - 1);\n }\n\n slideProgress = Math.min(Math.max(slideProgress, -1), 1);\n $(slideEl).find('[data-swiper-parallax], [data-swiper-parallax-x], [data-swiper-parallax-y], [data-swiper-parallax-opacity], [data-swiper-parallax-scale]').each(el => {\n setTransform(el, slideProgress);\n });\n });\n };\n\n const setTransition = (duration = swiper.params.speed) => {\n const {\n $el\n } = swiper;\n $el.find('[data-swiper-parallax], [data-swiper-parallax-x], [data-swiper-parallax-y], [data-swiper-parallax-opacity], [data-swiper-parallax-scale]').each(parallaxEl => {\n const $parallaxEl = $(parallaxEl);\n let parallaxDuration = parseInt($parallaxEl.attr('data-swiper-parallax-duration'), 10) || duration;\n if (duration === 0) parallaxDuration = 0;\n $parallaxEl.transition(parallaxDuration);\n });\n };\n\n on('beforeInit', () => {\n if (!swiper.params.parallax.enabled) return;\n swiper.params.watchSlidesProgress = true;\n swiper.originalParams.watchSlidesProgress = true;\n });\n on('init', () => {\n if (!swiper.params.parallax.enabled) return;\n setTranslate();\n });\n on('setTranslate', () => {\n if (!swiper.params.parallax.enabled) return;\n setTranslate();\n });\n on('setTransition', (_swiper, duration) => {\n if (!swiper.params.parallax.enabled) return;\n setTransition(duration);\n });\n}","import { getDocument } from 'ssr-window';\nimport $ from '../../shared/dom.js';\nimport { nextTick } from '../../shared/utils.js';\nimport createElementIfNotDefined from '../../shared/create-element-if-not-defined.js';\nexport default function Scrollbar({\n swiper,\n extendParams,\n on,\n emit\n}) {\n const document = getDocument();\n let isTouched = false;\n let timeout = null;\n let dragTimeout = null;\n let dragStartPos;\n let dragSize;\n let trackSize;\n let divider;\n extendParams({\n scrollbar: {\n el: null,\n dragSize: 'auto',\n hide: false,\n draggable: false,\n snapOnRelease: true,\n lockClass: 'swiper-scrollbar-lock',\n dragClass: 'swiper-scrollbar-drag'\n }\n });\n swiper.scrollbar = {\n el: null,\n dragEl: null,\n $el: null,\n $dragEl: null\n };\n\n function setTranslate() {\n if (!swiper.params.scrollbar.el || !swiper.scrollbar.el) return;\n const {\n scrollbar,\n rtlTranslate: rtl,\n progress\n } = swiper;\n const {\n $dragEl,\n $el\n } = scrollbar;\n const params = swiper.params.scrollbar;\n let newSize = dragSize;\n let newPos = (trackSize - dragSize) * progress;\n\n if (rtl) {\n newPos = -newPos;\n\n if (newPos > 0) {\n newSize = dragSize - newPos;\n newPos = 0;\n } else if (-newPos + dragSize > trackSize) {\n newSize = trackSize + newPos;\n }\n } else if (newPos < 0) {\n newSize = dragSize + newPos;\n newPos = 0;\n } else if (newPos + dragSize > trackSize) {\n newSize = trackSize - newPos;\n }\n\n if (swiper.isHorizontal()) {\n $dragEl.transform(`translate3d(${newPos}px, 0, 0)`);\n $dragEl[0].style.width = `${newSize}px`;\n } else {\n $dragEl.transform(`translate3d(0px, ${newPos}px, 0)`);\n $dragEl[0].style.height = `${newSize}px`;\n }\n\n if (params.hide) {\n clearTimeout(timeout);\n $el[0].style.opacity = 1;\n timeout = setTimeout(() => {\n $el[0].style.opacity = 0;\n $el.transition(400);\n }, 1000);\n }\n }\n\n function setTransition(duration) {\n if (!swiper.params.scrollbar.el || !swiper.scrollbar.el) return;\n swiper.scrollbar.$dragEl.transition(duration);\n }\n\n function updateSize() {\n if (!swiper.params.scrollbar.el || !swiper.scrollbar.el) return;\n const {\n scrollbar\n } = swiper;\n const {\n $dragEl,\n $el\n } = scrollbar;\n $dragEl[0].style.width = '';\n $dragEl[0].style.height = '';\n trackSize = swiper.isHorizontal() ? $el[0].offsetWidth : $el[0].offsetHeight;\n divider = swiper.size / (swiper.virtualSize + swiper.params.slidesOffsetBefore - (swiper.params.centeredSlides ? swiper.snapGrid[0] : 0));\n\n if (swiper.params.scrollbar.dragSize === 'auto') {\n dragSize = trackSize * divider;\n } else {\n dragSize = parseInt(swiper.params.scrollbar.dragSize, 10);\n }\n\n if (swiper.isHorizontal()) {\n $dragEl[0].style.width = `${dragSize}px`;\n } else {\n $dragEl[0].style.height = `${dragSize}px`;\n }\n\n if (divider >= 1) {\n $el[0].style.display = 'none';\n } else {\n $el[0].style.display = '';\n }\n\n if (swiper.params.scrollbar.hide) {\n $el[0].style.opacity = 0;\n }\n\n if (swiper.params.watchOverflow && swiper.enabled) {\n scrollbar.$el[swiper.isLocked ? 'addClass' : 'removeClass'](swiper.params.scrollbar.lockClass);\n }\n }\n\n function getPointerPosition(e) {\n if (swiper.isHorizontal()) {\n return e.type === 'touchstart' || e.type === 'touchmove' ? e.targetTouches[0].clientX : e.clientX;\n }\n\n return e.type === 'touchstart' || e.type === 'touchmove' ? e.targetTouches[0].clientY : e.clientY;\n }\n\n function setDragPosition(e) {\n const {\n scrollbar,\n rtlTranslate: rtl\n } = swiper;\n const {\n $el\n } = scrollbar;\n let positionRatio;\n positionRatio = (getPointerPosition(e) - $el.offset()[swiper.isHorizontal() ? 'left' : 'top'] - (dragStartPos !== null ? dragStartPos : dragSize / 2)) / (trackSize - dragSize);\n positionRatio = Math.max(Math.min(positionRatio, 1), 0);\n\n if (rtl) {\n positionRatio = 1 - positionRatio;\n }\n\n const position = swiper.minTranslate() + (swiper.maxTranslate() - swiper.minTranslate()) * positionRatio;\n swiper.updateProgress(position);\n swiper.setTranslate(position);\n swiper.updateActiveIndex();\n swiper.updateSlidesClasses();\n }\n\n function onDragStart(e) {\n const params = swiper.params.scrollbar;\n const {\n scrollbar,\n $wrapperEl\n } = swiper;\n const {\n $el,\n $dragEl\n } = scrollbar;\n isTouched = true;\n dragStartPos = e.target === $dragEl[0] || e.target === $dragEl ? getPointerPosition(e) - e.target.getBoundingClientRect()[swiper.isHorizontal() ? 'left' : 'top'] : null;\n e.preventDefault();\n e.stopPropagation();\n $wrapperEl.transition(100);\n $dragEl.transition(100);\n setDragPosition(e);\n clearTimeout(dragTimeout);\n $el.transition(0);\n\n if (params.hide) {\n $el.css('opacity', 1);\n }\n\n if (swiper.params.cssMode) {\n swiper.$wrapperEl.css('scroll-snap-type', 'none');\n }\n\n emit('scrollbarDragStart', e);\n }\n\n function onDragMove(e) {\n const {\n scrollbar,\n $wrapperEl\n } = swiper;\n const {\n $el,\n $dragEl\n } = scrollbar;\n if (!isTouched) return;\n if (e.preventDefault) e.preventDefault();else e.returnValue = false;\n setDragPosition(e);\n $wrapperEl.transition(0);\n $el.transition(0);\n $dragEl.transition(0);\n emit('scrollbarDragMove', e);\n }\n\n function onDragEnd(e) {\n const params = swiper.params.scrollbar;\n const {\n scrollbar,\n $wrapperEl\n } = swiper;\n const {\n $el\n } = scrollbar;\n if (!isTouched) return;\n isTouched = false;\n\n if (swiper.params.cssMode) {\n swiper.$wrapperEl.css('scroll-snap-type', '');\n $wrapperEl.transition('');\n }\n\n if (params.hide) {\n clearTimeout(dragTimeout);\n dragTimeout = nextTick(() => {\n $el.css('opacity', 0);\n $el.transition(400);\n }, 1000);\n }\n\n emit('scrollbarDragEnd', e);\n\n if (params.snapOnRelease) {\n swiper.slideToClosest();\n }\n }\n\n function events(method) {\n const {\n scrollbar,\n touchEventsTouch,\n touchEventsDesktop,\n params,\n support\n } = swiper;\n const $el = scrollbar.$el;\n const target = $el[0];\n const activeListener = support.passiveListener && params.passiveListeners ? {\n passive: false,\n capture: false\n } : false;\n const passiveListener = support.passiveListener && params.passiveListeners ? {\n passive: true,\n capture: false\n } : false;\n if (!target) return;\n const eventMethod = method === 'on' ? 'addEventListener' : 'removeEventListener';\n\n if (!support.touch) {\n target[eventMethod](touchEventsDesktop.start, onDragStart, activeListener);\n document[eventMethod](touchEventsDesktop.move, onDragMove, activeListener);\n document[eventMethod](touchEventsDesktop.end, onDragEnd, passiveListener);\n } else {\n target[eventMethod](touchEventsTouch.start, onDragStart, activeListener);\n target[eventMethod](touchEventsTouch.move, onDragMove, activeListener);\n target[eventMethod](touchEventsTouch.end, onDragEnd, passiveListener);\n }\n }\n\n function enableDraggable() {\n if (!swiper.params.scrollbar.el) return;\n events('on');\n }\n\n function disableDraggable() {\n if (!swiper.params.scrollbar.el) return;\n events('off');\n }\n\n function init() {\n const {\n scrollbar,\n $el: $swiperEl\n } = swiper;\n swiper.params.scrollbar = createElementIfNotDefined(swiper, swiper.originalParams.scrollbar, swiper.params.scrollbar, {\n el: 'swiper-scrollbar'\n });\n const params = swiper.params.scrollbar;\n if (!params.el) return;\n let $el = $(params.el);\n\n if (swiper.params.uniqueNavElements && typeof params.el === 'string' && $el.length > 1 && $swiperEl.find(params.el).length === 1) {\n $el = $swiperEl.find(params.el);\n }\n\n let $dragEl = $el.find(`.${swiper.params.scrollbar.dragClass}`);\n\n if ($dragEl.length === 0) {\n $dragEl = $(`
`);\n $el.append($dragEl);\n }\n\n Object.assign(scrollbar, {\n $el,\n el: $el[0],\n $dragEl,\n dragEl: $dragEl[0]\n });\n\n if (params.draggable) {\n enableDraggable();\n }\n\n if ($el) {\n $el[swiper.enabled ? 'removeClass' : 'addClass'](swiper.params.scrollbar.lockClass);\n }\n }\n\n function destroy() {\n disableDraggable();\n }\n\n on('init', () => {\n init();\n updateSize();\n setTranslate();\n });\n on('update resize observerUpdate lock unlock', () => {\n updateSize();\n });\n on('setTranslate', () => {\n setTranslate();\n });\n on('setTransition', (_s, duration) => {\n setTransition(duration);\n });\n on('enable disable', () => {\n const {\n $el\n } = swiper.scrollbar;\n\n if ($el) {\n $el[swiper.enabled ? 'removeClass' : 'addClass'](swiper.params.scrollbar.lockClass);\n }\n });\n on('destroy', () => {\n destroy();\n });\n Object.assign(swiper.scrollbar, {\n updateSize,\n setTranslate,\n init,\n destroy\n });\n}","import { isObject } from '../../shared/utils.js';\nimport $ from '../../shared/dom.js';\nexport default function Thumb({\n swiper,\n extendParams,\n on\n}) {\n extendParams({\n thumbs: {\n swiper: null,\n multipleActiveThumbs: true,\n autoScrollOffset: 0,\n slideThumbActiveClass: 'swiper-slide-thumb-active',\n thumbsContainerClass: 'swiper-thumbs'\n }\n });\n let initialized = false;\n let swiperCreated = false;\n swiper.thumbs = {\n swiper: null\n };\n\n function onThumbClick() {\n const thumbsSwiper = swiper.thumbs.swiper;\n if (!thumbsSwiper) return;\n const clickedIndex = thumbsSwiper.clickedIndex;\n const clickedSlide = thumbsSwiper.clickedSlide;\n if (clickedSlide && $(clickedSlide).hasClass(swiper.params.thumbs.slideThumbActiveClass)) return;\n if (typeof clickedIndex === 'undefined' || clickedIndex === null) return;\n let slideToIndex;\n\n if (thumbsSwiper.params.loop) {\n slideToIndex = parseInt($(thumbsSwiper.clickedSlide).attr('data-swiper-slide-index'), 10);\n } else {\n slideToIndex = clickedIndex;\n }\n\n if (swiper.params.loop) {\n let currentIndex = swiper.activeIndex;\n\n if (swiper.slides.eq(currentIndex).hasClass(swiper.params.slideDuplicateClass)) {\n swiper.loopFix(); // eslint-disable-next-line\n\n swiper._clientLeft = swiper.$wrapperEl[0].clientLeft;\n currentIndex = swiper.activeIndex;\n }\n\n const prevIndex = swiper.slides.eq(currentIndex).prevAll(`[data-swiper-slide-index=\"${slideToIndex}\"]`).eq(0).index();\n const nextIndex = swiper.slides.eq(currentIndex).nextAll(`[data-swiper-slide-index=\"${slideToIndex}\"]`).eq(0).index();\n if (typeof prevIndex === 'undefined') slideToIndex = nextIndex;else if (typeof nextIndex === 'undefined') slideToIndex = prevIndex;else if (nextIndex - currentIndex < currentIndex - prevIndex) slideToIndex = nextIndex;else slideToIndex = prevIndex;\n }\n\n swiper.slideTo(slideToIndex);\n }\n\n function init() {\n const {\n thumbs: thumbsParams\n } = swiper.params;\n if (initialized) return false;\n initialized = true;\n const SwiperClass = swiper.constructor;\n\n if (thumbsParams.swiper instanceof SwiperClass) {\n swiper.thumbs.swiper = thumbsParams.swiper;\n Object.assign(swiper.thumbs.swiper.originalParams, {\n watchSlidesProgress: true,\n slideToClickedSlide: false\n });\n Object.assign(swiper.thumbs.swiper.params, {\n watchSlidesProgress: true,\n slideToClickedSlide: false\n });\n } else if (isObject(thumbsParams.swiper)) {\n const thumbsSwiperParams = Object.assign({}, thumbsParams.swiper);\n Object.assign(thumbsSwiperParams, {\n watchSlidesProgress: true,\n slideToClickedSlide: false\n });\n swiper.thumbs.swiper = new SwiperClass(thumbsSwiperParams);\n swiperCreated = true;\n }\n\n swiper.thumbs.swiper.$el.addClass(swiper.params.thumbs.thumbsContainerClass);\n swiper.thumbs.swiper.on('tap', onThumbClick);\n return true;\n }\n\n function update(initial) {\n const thumbsSwiper = swiper.thumbs.swiper;\n if (!thumbsSwiper) return;\n const slidesPerView = thumbsSwiper.params.slidesPerView === 'auto' ? thumbsSwiper.slidesPerViewDynamic() : thumbsSwiper.params.slidesPerView;\n const autoScrollOffset = swiper.params.thumbs.autoScrollOffset;\n const useOffset = autoScrollOffset && !thumbsSwiper.params.loop;\n\n if (swiper.realIndex !== thumbsSwiper.realIndex || useOffset) {\n let currentThumbsIndex = thumbsSwiper.activeIndex;\n let newThumbsIndex;\n let direction;\n\n if (thumbsSwiper.params.loop) {\n if (thumbsSwiper.slides.eq(currentThumbsIndex).hasClass(thumbsSwiper.params.slideDuplicateClass)) {\n thumbsSwiper.loopFix(); // eslint-disable-next-line\n\n thumbsSwiper._clientLeft = thumbsSwiper.$wrapperEl[0].clientLeft;\n currentThumbsIndex = thumbsSwiper.activeIndex;\n } // Find actual thumbs index to slide to\n\n\n const prevThumbsIndex = thumbsSwiper.slides.eq(currentThumbsIndex).prevAll(`[data-swiper-slide-index=\"${swiper.realIndex}\"]`).eq(0).index();\n const nextThumbsIndex = thumbsSwiper.slides.eq(currentThumbsIndex).nextAll(`[data-swiper-slide-index=\"${swiper.realIndex}\"]`).eq(0).index();\n\n if (typeof prevThumbsIndex === 'undefined') {\n newThumbsIndex = nextThumbsIndex;\n } else if (typeof nextThumbsIndex === 'undefined') {\n newThumbsIndex = prevThumbsIndex;\n } else if (nextThumbsIndex - currentThumbsIndex === currentThumbsIndex - prevThumbsIndex) {\n newThumbsIndex = thumbsSwiper.params.slidesPerGroup > 1 ? nextThumbsIndex : currentThumbsIndex;\n } else if (nextThumbsIndex - currentThumbsIndex < currentThumbsIndex - prevThumbsIndex) {\n newThumbsIndex = nextThumbsIndex;\n } else {\n newThumbsIndex = prevThumbsIndex;\n }\n\n direction = swiper.activeIndex > swiper.previousIndex ? 'next' : 'prev';\n } else {\n newThumbsIndex = swiper.realIndex;\n direction = newThumbsIndex > swiper.previousIndex ? 'next' : 'prev';\n }\n\n if (useOffset) {\n newThumbsIndex += direction === 'next' ? autoScrollOffset : -1 * autoScrollOffset;\n }\n\n if (thumbsSwiper.visibleSlidesIndexes && thumbsSwiper.visibleSlidesIndexes.indexOf(newThumbsIndex) < 0) {\n if (thumbsSwiper.params.centeredSlides) {\n if (newThumbsIndex > currentThumbsIndex) {\n newThumbsIndex = newThumbsIndex - Math.floor(slidesPerView / 2) + 1;\n } else {\n newThumbsIndex = newThumbsIndex + Math.floor(slidesPerView / 2) - 1;\n }\n } else if (newThumbsIndex > currentThumbsIndex && thumbsSwiper.params.slidesPerGroup === 1) {// newThumbsIndex = newThumbsIndex - slidesPerView + 1;\n }\n\n thumbsSwiper.slideTo(newThumbsIndex, initial ? 0 : undefined);\n }\n } // Activate thumbs\n\n\n let thumbsToActivate = 1;\n const thumbActiveClass = swiper.params.thumbs.slideThumbActiveClass;\n\n if (swiper.params.slidesPerView > 1 && !swiper.params.centeredSlides) {\n thumbsToActivate = swiper.params.slidesPerView;\n }\n\n if (!swiper.params.thumbs.multipleActiveThumbs) {\n thumbsToActivate = 1;\n }\n\n thumbsToActivate = Math.floor(thumbsToActivate);\n thumbsSwiper.slides.removeClass(thumbActiveClass);\n\n if (thumbsSwiper.params.loop || thumbsSwiper.params.virtual && thumbsSwiper.params.virtual.enabled) {\n for (let i = 0; i < thumbsToActivate; i += 1) {\n thumbsSwiper.$wrapperEl.children(`[data-swiper-slide-index=\"${swiper.realIndex + i}\"]`).addClass(thumbActiveClass);\n }\n } else {\n for (let i = 0; i < thumbsToActivate; i += 1) {\n thumbsSwiper.slides.eq(swiper.realIndex + i).addClass(thumbActiveClass);\n }\n }\n }\n\n on('beforeInit', () => {\n const {\n thumbs\n } = swiper.params;\n if (!thumbs || !thumbs.swiper) return;\n init();\n update(true);\n });\n on('slideChange update resize observerUpdate', () => {\n if (!swiper.thumbs.swiper) return;\n update();\n });\n on('setTransition', (_s, duration) => {\n const thumbsSwiper = swiper.thumbs.swiper;\n if (!thumbsSwiper) return;\n thumbsSwiper.setTransition(duration);\n });\n on('beforeDestroy', () => {\n const thumbsSwiper = swiper.thumbs.swiper;\n if (!thumbsSwiper) return;\n\n if (swiperCreated && thumbsSwiper) {\n thumbsSwiper.destroy();\n }\n });\n Object.assign(swiper.thumbs, {\n init,\n update\n });\n}","import $ from '../../shared/dom.js';\nimport { setCSSProperty } from '../../shared/utils.js';\nexport default function Virtual({\n swiper,\n extendParams,\n on\n}) {\n extendParams({\n virtual: {\n enabled: false,\n slides: [],\n cache: true,\n renderSlide: null,\n renderExternal: null,\n renderExternalUpdate: true,\n addSlidesBefore: 0,\n addSlidesAfter: 0\n }\n });\n let cssModeTimeout;\n swiper.virtual = {\n cache: {},\n from: undefined,\n to: undefined,\n slides: [],\n offset: 0,\n slidesGrid: []\n };\n\n function renderSlide(slide, index) {\n const params = swiper.params.virtual;\n\n if (params.cache && swiper.virtual.cache[index]) {\n return swiper.virtual.cache[index];\n }\n\n const $slideEl = params.renderSlide ? $(params.renderSlide.call(swiper, slide, index)) : $(`
${slide}
`);\n if (!$slideEl.attr('data-swiper-slide-index')) $slideEl.attr('data-swiper-slide-index', index);\n if (params.cache) swiper.virtual.cache[index] = $slideEl;\n return $slideEl;\n }\n\n function update(force) {\n const {\n slidesPerView,\n slidesPerGroup,\n centeredSlides\n } = swiper.params;\n const {\n addSlidesBefore,\n addSlidesAfter\n } = swiper.params.virtual;\n const {\n from: previousFrom,\n to: previousTo,\n slides,\n slidesGrid: previousSlidesGrid,\n offset: previousOffset\n } = swiper.virtual;\n\n if (!swiper.params.cssMode) {\n swiper.updateActiveIndex();\n }\n\n const activeIndex = swiper.activeIndex || 0;\n let offsetProp;\n if (swiper.rtlTranslate) offsetProp = 'right';else offsetProp = swiper.isHorizontal() ? 'left' : 'top';\n let slidesAfter;\n let slidesBefore;\n\n if (centeredSlides) {\n slidesAfter = Math.floor(slidesPerView / 2) + slidesPerGroup + addSlidesAfter;\n slidesBefore = Math.floor(slidesPerView / 2) + slidesPerGroup + addSlidesBefore;\n } else {\n slidesAfter = slidesPerView + (slidesPerGroup - 1) + addSlidesAfter;\n slidesBefore = slidesPerGroup + addSlidesBefore;\n }\n\n const from = Math.max((activeIndex || 0) - slidesBefore, 0);\n const to = Math.min((activeIndex || 0) + slidesAfter, slides.length - 1);\n const offset = (swiper.slidesGrid[from] || 0) - (swiper.slidesGrid[0] || 0);\n Object.assign(swiper.virtual, {\n from,\n to,\n offset,\n slidesGrid: swiper.slidesGrid\n });\n\n function onRendered() {\n swiper.updateSlides();\n swiper.updateProgress();\n swiper.updateSlidesClasses();\n\n if (swiper.lazy && swiper.params.lazy.enabled) {\n swiper.lazy.load();\n }\n }\n\n if (previousFrom === from && previousTo === to && !force) {\n if (swiper.slidesGrid !== previousSlidesGrid && offset !== previousOffset) {\n swiper.slides.css(offsetProp, `${offset}px`);\n }\n\n swiper.updateProgress();\n return;\n }\n\n if (swiper.params.virtual.renderExternal) {\n swiper.params.virtual.renderExternal.call(swiper, {\n offset,\n from,\n to,\n slides: function getSlides() {\n const slidesToRender = [];\n\n for (let i = from; i <= to; i += 1) {\n slidesToRender.push(slides[i]);\n }\n\n return slidesToRender;\n }()\n });\n\n if (swiper.params.virtual.renderExternalUpdate) {\n onRendered();\n }\n\n return;\n }\n\n const prependIndexes = [];\n const appendIndexes = [];\n\n if (force) {\n swiper.$wrapperEl.find(`.${swiper.params.slideClass}`).remove();\n } else {\n for (let i = previousFrom; i <= previousTo; i += 1) {\n if (i < from || i > to) {\n swiper.$wrapperEl.find(`.${swiper.params.slideClass}[data-swiper-slide-index=\"${i}\"]`).remove();\n }\n }\n }\n\n for (let i = 0; i < slides.length; i += 1) {\n if (i >= from && i <= to) {\n if (typeof previousTo === 'undefined' || force) {\n appendIndexes.push(i);\n } else {\n if (i > previousTo) appendIndexes.push(i);\n if (i < previousFrom) prependIndexes.push(i);\n }\n }\n }\n\n appendIndexes.forEach(index => {\n swiper.$wrapperEl.append(renderSlide(slides[index], index));\n });\n prependIndexes.sort((a, b) => b - a).forEach(index => {\n swiper.$wrapperEl.prepend(renderSlide(slides[index], index));\n });\n swiper.$wrapperEl.children('.swiper-slide').css(offsetProp, `${offset}px`);\n onRendered();\n }\n\n function appendSlide(slides) {\n if (typeof slides === 'object' && 'length' in slides) {\n for (let i = 0; i < slides.length; i += 1) {\n if (slides[i]) swiper.virtual.slides.push(slides[i]);\n }\n } else {\n swiper.virtual.slides.push(slides);\n }\n\n update(true);\n }\n\n function prependSlide(slides) {\n const activeIndex = swiper.activeIndex;\n let newActiveIndex = activeIndex + 1;\n let numberOfNewSlides = 1;\n\n if (Array.isArray(slides)) {\n for (let i = 0; i < slides.length; i += 1) {\n if (slides[i]) swiper.virtual.slides.unshift(slides[i]);\n }\n\n newActiveIndex = activeIndex + slides.length;\n numberOfNewSlides = slides.length;\n } else {\n swiper.virtual.slides.unshift(slides);\n }\n\n if (swiper.params.virtual.cache) {\n const cache = swiper.virtual.cache;\n const newCache = {};\n Object.keys(cache).forEach(cachedIndex => {\n const $cachedEl = cache[cachedIndex];\n const cachedElIndex = $cachedEl.attr('data-swiper-slide-index');\n\n if (cachedElIndex) {\n $cachedEl.attr('data-swiper-slide-index', parseInt(cachedElIndex, 10) + numberOfNewSlides);\n }\n\n newCache[parseInt(cachedIndex, 10) + numberOfNewSlides] = $cachedEl;\n });\n swiper.virtual.cache = newCache;\n }\n\n update(true);\n swiper.slideTo(newActiveIndex, 0);\n }\n\n function removeSlide(slidesIndexes) {\n if (typeof slidesIndexes === 'undefined' || slidesIndexes === null) return;\n let activeIndex = swiper.activeIndex;\n\n if (Array.isArray(slidesIndexes)) {\n for (let i = slidesIndexes.length - 1; i >= 0; i -= 1) {\n swiper.virtual.slides.splice(slidesIndexes[i], 1);\n\n if (swiper.params.virtual.cache) {\n delete swiper.virtual.cache[slidesIndexes[i]];\n }\n\n if (slidesIndexes[i] < activeIndex) activeIndex -= 1;\n activeIndex = Math.max(activeIndex, 0);\n }\n } else {\n swiper.virtual.slides.splice(slidesIndexes, 1);\n\n if (swiper.params.virtual.cache) {\n delete swiper.virtual.cache[slidesIndexes];\n }\n\n if (slidesIndexes < activeIndex) activeIndex -= 1;\n activeIndex = Math.max(activeIndex, 0);\n }\n\n update(true);\n swiper.slideTo(activeIndex, 0);\n }\n\n function removeAllSlides() {\n swiper.virtual.slides = [];\n\n if (swiper.params.virtual.cache) {\n swiper.virtual.cache = {};\n }\n\n update(true);\n swiper.slideTo(0, 0);\n }\n\n on('beforeInit', () => {\n if (!swiper.params.virtual.enabled) return;\n swiper.virtual.slides = swiper.params.virtual.slides;\n swiper.classNames.push(`${swiper.params.containerModifierClass}virtual`);\n swiper.params.watchSlidesProgress = true;\n swiper.originalParams.watchSlidesProgress = true;\n\n if (!swiper.params.initialSlide) {\n update();\n }\n });\n on('setTranslate', () => {\n if (!swiper.params.virtual.enabled) return;\n\n if (swiper.params.cssMode && !swiper._immediateVirtual) {\n clearTimeout(cssModeTimeout);\n cssModeTimeout = setTimeout(() => {\n update();\n }, 100);\n } else {\n update();\n }\n });\n on('init update resize', () => {\n if (!swiper.params.virtual.enabled) return;\n\n if (swiper.params.cssMode) {\n setCSSProperty(swiper.wrapperEl, '--swiper-virtual-size', `${swiper.virtualSize}px`);\n }\n });\n Object.assign(swiper.virtual, {\n appendSlide,\n prependSlide,\n removeSlide,\n removeAllSlides,\n update\n });\n}","import { getWindow } from 'ssr-window';\nimport $ from '../../shared/dom.js';\nimport { getTranslate } from '../../shared/utils.js';\nexport default function Zoom({\n swiper,\n extendParams,\n on,\n emit\n}) {\n const window = getWindow();\n extendParams({\n zoom: {\n enabled: false,\n maxRatio: 3,\n minRatio: 1,\n toggle: true,\n containerClass: 'swiper-zoom-container',\n zoomedSlideClass: 'swiper-slide-zoomed'\n }\n });\n swiper.zoom = {\n enabled: false\n };\n let currentScale = 1;\n let isScaling = false;\n let gesturesEnabled;\n let fakeGestureTouched;\n let fakeGestureMoved;\n const gesture = {\n $slideEl: undefined,\n slideWidth: undefined,\n slideHeight: undefined,\n $imageEl: undefined,\n $imageWrapEl: undefined,\n maxRatio: 3\n };\n const image = {\n isTouched: undefined,\n isMoved: undefined,\n currentX: undefined,\n currentY: undefined,\n minX: undefined,\n minY: undefined,\n maxX: undefined,\n maxY: undefined,\n width: undefined,\n height: undefined,\n startX: undefined,\n startY: undefined,\n touchesStart: {},\n touchesCurrent: {}\n };\n const velocity = {\n x: undefined,\n y: undefined,\n prevPositionX: undefined,\n prevPositionY: undefined,\n prevTime: undefined\n };\n let scale = 1;\n Object.defineProperty(swiper.zoom, 'scale', {\n get() {\n return scale;\n },\n\n set(value) {\n if (scale !== value) {\n const imageEl = gesture.$imageEl ? gesture.$imageEl[0] : undefined;\n const slideEl = gesture.$slideEl ? gesture.$slideEl[0] : undefined;\n emit('zoomChange', value, imageEl, slideEl);\n }\n\n scale = value;\n }\n\n });\n\n function getDistanceBetweenTouches(e) {\n if (e.targetTouches.length < 2) return 1;\n const x1 = e.targetTouches[0].pageX;\n const y1 = e.targetTouches[0].pageY;\n const x2 = e.targetTouches[1].pageX;\n const y2 = e.targetTouches[1].pageY;\n const distance = Math.sqrt((x2 - x1) ** 2 + (y2 - y1) ** 2);\n return distance;\n } // Events\n\n\n function onGestureStart(e) {\n const support = swiper.support;\n const params = swiper.params.zoom;\n fakeGestureTouched = false;\n fakeGestureMoved = false;\n\n if (!support.gestures) {\n if (e.type !== 'touchstart' || e.type === 'touchstart' && e.targetTouches.length < 2) {\n return;\n }\n\n fakeGestureTouched = true;\n gesture.scaleStart = getDistanceBetweenTouches(e);\n }\n\n if (!gesture.$slideEl || !gesture.$slideEl.length) {\n gesture.$slideEl = $(e.target).closest(`.${swiper.params.slideClass}`);\n if (gesture.$slideEl.length === 0) gesture.$slideEl = swiper.slides.eq(swiper.activeIndex);\n gesture.$imageEl = gesture.$slideEl.find(`.${params.containerClass}`).eq(0).find('picture, img, svg, canvas, .swiper-zoom-target').eq(0);\n gesture.$imageWrapEl = gesture.$imageEl.parent(`.${params.containerClass}`);\n gesture.maxRatio = gesture.$imageWrapEl.attr('data-swiper-zoom') || params.maxRatio;\n\n if (gesture.$imageWrapEl.length === 0) {\n gesture.$imageEl = undefined;\n return;\n }\n }\n\n if (gesture.$imageEl) {\n gesture.$imageEl.transition(0);\n }\n\n isScaling = true;\n }\n\n function onGestureChange(e) {\n const support = swiper.support;\n const params = swiper.params.zoom;\n const zoom = swiper.zoom;\n\n if (!support.gestures) {\n if (e.type !== 'touchmove' || e.type === 'touchmove' && e.targetTouches.length < 2) {\n return;\n }\n\n fakeGestureMoved = true;\n gesture.scaleMove = getDistanceBetweenTouches(e);\n }\n\n if (!gesture.$imageEl || gesture.$imageEl.length === 0) {\n if (e.type === 'gesturechange') onGestureStart(e);\n return;\n }\n\n if (support.gestures) {\n zoom.scale = e.scale * currentScale;\n } else {\n zoom.scale = gesture.scaleMove / gesture.scaleStart * currentScale;\n }\n\n if (zoom.scale > gesture.maxRatio) {\n zoom.scale = gesture.maxRatio - 1 + (zoom.scale - gesture.maxRatio + 1) ** 0.5;\n }\n\n if (zoom.scale < params.minRatio) {\n zoom.scale = params.minRatio + 1 - (params.minRatio - zoom.scale + 1) ** 0.5;\n }\n\n gesture.$imageEl.transform(`translate3d(0,0,0) scale(${zoom.scale})`);\n }\n\n function onGestureEnd(e) {\n const device = swiper.device;\n const support = swiper.support;\n const params = swiper.params.zoom;\n const zoom = swiper.zoom;\n\n if (!support.gestures) {\n if (!fakeGestureTouched || !fakeGestureMoved) {\n return;\n }\n\n if (e.type !== 'touchend' || e.type === 'touchend' && e.changedTouches.length < 2 && !device.android) {\n return;\n }\n\n fakeGestureTouched = false;\n fakeGestureMoved = false;\n }\n\n if (!gesture.$imageEl || gesture.$imageEl.length === 0) return;\n zoom.scale = Math.max(Math.min(zoom.scale, gesture.maxRatio), params.minRatio);\n gesture.$imageEl.transition(swiper.params.speed).transform(`translate3d(0,0,0) scale(${zoom.scale})`);\n currentScale = zoom.scale;\n isScaling = false;\n if (zoom.scale === 1) gesture.$slideEl = undefined;\n }\n\n function onTouchStart(e) {\n const device = swiper.device;\n if (!gesture.$imageEl || gesture.$imageEl.length === 0) return;\n if (image.isTouched) return;\n if (device.android && e.cancelable) e.preventDefault();\n image.isTouched = true;\n image.touchesStart.x = e.type === 'touchstart' ? e.targetTouches[0].pageX : e.pageX;\n image.touchesStart.y = e.type === 'touchstart' ? e.targetTouches[0].pageY : e.pageY;\n }\n\n function onTouchMove(e) {\n const zoom = swiper.zoom;\n if (!gesture.$imageEl || gesture.$imageEl.length === 0) return;\n swiper.allowClick = false;\n if (!image.isTouched || !gesture.$slideEl) return;\n\n if (!image.isMoved) {\n image.width = gesture.$imageEl[0].offsetWidth;\n image.height = gesture.$imageEl[0].offsetHeight;\n image.startX = getTranslate(gesture.$imageWrapEl[0], 'x') || 0;\n image.startY = getTranslate(gesture.$imageWrapEl[0], 'y') || 0;\n gesture.slideWidth = gesture.$slideEl[0].offsetWidth;\n gesture.slideHeight = gesture.$slideEl[0].offsetHeight;\n gesture.$imageWrapEl.transition(0);\n } // Define if we need image drag\n\n\n const scaledWidth = image.width * zoom.scale;\n const scaledHeight = image.height * zoom.scale;\n if (scaledWidth < gesture.slideWidth && scaledHeight < gesture.slideHeight) return;\n image.minX = Math.min(gesture.slideWidth / 2 - scaledWidth / 2, 0);\n image.maxX = -image.minX;\n image.minY = Math.min(gesture.slideHeight / 2 - scaledHeight / 2, 0);\n image.maxY = -image.minY;\n image.touchesCurrent.x = e.type === 'touchmove' ? e.targetTouches[0].pageX : e.pageX;\n image.touchesCurrent.y = e.type === 'touchmove' ? e.targetTouches[0].pageY : e.pageY;\n\n if (!image.isMoved && !isScaling) {\n if (swiper.isHorizontal() && (Math.floor(image.minX) === Math.floor(image.startX) && image.touchesCurrent.x < image.touchesStart.x || Math.floor(image.maxX) === Math.floor(image.startX) && image.touchesCurrent.x > image.touchesStart.x)) {\n image.isTouched = false;\n return;\n }\n\n if (!swiper.isHorizontal() && (Math.floor(image.minY) === Math.floor(image.startY) && image.touchesCurrent.y < image.touchesStart.y || Math.floor(image.maxY) === Math.floor(image.startY) && image.touchesCurrent.y > image.touchesStart.y)) {\n image.isTouched = false;\n return;\n }\n }\n\n if (e.cancelable) {\n e.preventDefault();\n }\n\n e.stopPropagation();\n image.isMoved = true;\n image.currentX = image.touchesCurrent.x - image.touchesStart.x + image.startX;\n image.currentY = image.touchesCurrent.y - image.touchesStart.y + image.startY;\n\n if (image.currentX < image.minX) {\n image.currentX = image.minX + 1 - (image.minX - image.currentX + 1) ** 0.8;\n }\n\n if (image.currentX > image.maxX) {\n image.currentX = image.maxX - 1 + (image.currentX - image.maxX + 1) ** 0.8;\n }\n\n if (image.currentY < image.minY) {\n image.currentY = image.minY + 1 - (image.minY - image.currentY + 1) ** 0.8;\n }\n\n if (image.currentY > image.maxY) {\n image.currentY = image.maxY - 1 + (image.currentY - image.maxY + 1) ** 0.8;\n } // Velocity\n\n\n if (!velocity.prevPositionX) velocity.prevPositionX = image.touchesCurrent.x;\n if (!velocity.prevPositionY) velocity.prevPositionY = image.touchesCurrent.y;\n if (!velocity.prevTime) velocity.prevTime = Date.now();\n velocity.x = (image.touchesCurrent.x - velocity.prevPositionX) / (Date.now() - velocity.prevTime) / 2;\n velocity.y = (image.touchesCurrent.y - velocity.prevPositionY) / (Date.now() - velocity.prevTime) / 2;\n if (Math.abs(image.touchesCurrent.x - velocity.prevPositionX) < 2) velocity.x = 0;\n if (Math.abs(image.touchesCurrent.y - velocity.prevPositionY) < 2) velocity.y = 0;\n velocity.prevPositionX = image.touchesCurrent.x;\n velocity.prevPositionY = image.touchesCurrent.y;\n velocity.prevTime = Date.now();\n gesture.$imageWrapEl.transform(`translate3d(${image.currentX}px, ${image.currentY}px,0)`);\n }\n\n function onTouchEnd() {\n const zoom = swiper.zoom;\n if (!gesture.$imageEl || gesture.$imageEl.length === 0) return;\n\n if (!image.isTouched || !image.isMoved) {\n image.isTouched = false;\n image.isMoved = false;\n return;\n }\n\n image.isTouched = false;\n image.isMoved = false;\n let momentumDurationX = 300;\n let momentumDurationY = 300;\n const momentumDistanceX = velocity.x * momentumDurationX;\n const newPositionX = image.currentX + momentumDistanceX;\n const momentumDistanceY = velocity.y * momentumDurationY;\n const newPositionY = image.currentY + momentumDistanceY; // Fix duration\n\n if (velocity.x !== 0) momentumDurationX = Math.abs((newPositionX - image.currentX) / velocity.x);\n if (velocity.y !== 0) momentumDurationY = Math.abs((newPositionY - image.currentY) / velocity.y);\n const momentumDuration = Math.max(momentumDurationX, momentumDurationY);\n image.currentX = newPositionX;\n image.currentY = newPositionY; // Define if we need image drag\n\n const scaledWidth = image.width * zoom.scale;\n const scaledHeight = image.height * zoom.scale;\n image.minX = Math.min(gesture.slideWidth / 2 - scaledWidth / 2, 0);\n image.maxX = -image.minX;\n image.minY = Math.min(gesture.slideHeight / 2 - scaledHeight / 2, 0);\n image.maxY = -image.minY;\n image.currentX = Math.max(Math.min(image.currentX, image.maxX), image.minX);\n image.currentY = Math.max(Math.min(image.currentY, image.maxY), image.minY);\n gesture.$imageWrapEl.transition(momentumDuration).transform(`translate3d(${image.currentX}px, ${image.currentY}px,0)`);\n }\n\n function onTransitionEnd() {\n const zoom = swiper.zoom;\n\n if (gesture.$slideEl && swiper.previousIndex !== swiper.activeIndex) {\n if (gesture.$imageEl) {\n gesture.$imageEl.transform('translate3d(0,0,0) scale(1)');\n }\n\n if (gesture.$imageWrapEl) {\n gesture.$imageWrapEl.transform('translate3d(0,0,0)');\n }\n\n zoom.scale = 1;\n currentScale = 1;\n gesture.$slideEl = undefined;\n gesture.$imageEl = undefined;\n gesture.$imageWrapEl = undefined;\n }\n }\n\n function zoomIn(e) {\n const zoom = swiper.zoom;\n const params = swiper.params.zoom;\n\n if (!gesture.$slideEl) {\n if (e && e.target) {\n gesture.$slideEl = $(e.target).closest(`.${swiper.params.slideClass}`);\n }\n\n if (!gesture.$slideEl) {\n if (swiper.params.virtual && swiper.params.virtual.enabled && swiper.virtual) {\n gesture.$slideEl = swiper.$wrapperEl.children(`.${swiper.params.slideActiveClass}`);\n } else {\n gesture.$slideEl = swiper.slides.eq(swiper.activeIndex);\n }\n }\n\n gesture.$imageEl = gesture.$slideEl.find(`.${params.containerClass}`).eq(0).find('picture, img, svg, canvas, .swiper-zoom-target').eq(0);\n gesture.$imageWrapEl = gesture.$imageEl.parent(`.${params.containerClass}`);\n }\n\n if (!gesture.$imageEl || gesture.$imageEl.length === 0 || !gesture.$imageWrapEl || gesture.$imageWrapEl.length === 0) return;\n\n if (swiper.params.cssMode) {\n swiper.wrapperEl.style.overflow = 'hidden';\n swiper.wrapperEl.style.touchAction = 'none';\n }\n\n gesture.$slideEl.addClass(`${params.zoomedSlideClass}`);\n let touchX;\n let touchY;\n let offsetX;\n let offsetY;\n let diffX;\n let diffY;\n let translateX;\n let translateY;\n let imageWidth;\n let imageHeight;\n let scaledWidth;\n let scaledHeight;\n let translateMinX;\n let translateMinY;\n let translateMaxX;\n let translateMaxY;\n let slideWidth;\n let slideHeight;\n\n if (typeof image.touchesStart.x === 'undefined' && e) {\n touchX = e.type === 'touchend' ? e.changedTouches[0].pageX : e.pageX;\n touchY = e.type === 'touchend' ? e.changedTouches[0].pageY : e.pageY;\n } else {\n touchX = image.touchesStart.x;\n touchY = image.touchesStart.y;\n }\n\n zoom.scale = gesture.$imageWrapEl.attr('data-swiper-zoom') || params.maxRatio;\n currentScale = gesture.$imageWrapEl.attr('data-swiper-zoom') || params.maxRatio;\n\n if (e) {\n slideWidth = gesture.$slideEl[0].offsetWidth;\n slideHeight = gesture.$slideEl[0].offsetHeight;\n offsetX = gesture.$slideEl.offset().left + window.scrollX;\n offsetY = gesture.$slideEl.offset().top + window.scrollY;\n diffX = offsetX + slideWidth / 2 - touchX;\n diffY = offsetY + slideHeight / 2 - touchY;\n imageWidth = gesture.$imageEl[0].offsetWidth;\n imageHeight = gesture.$imageEl[0].offsetHeight;\n scaledWidth = imageWidth * zoom.scale;\n scaledHeight = imageHeight * zoom.scale;\n translateMinX = Math.min(slideWidth / 2 - scaledWidth / 2, 0);\n translateMinY = Math.min(slideHeight / 2 - scaledHeight / 2, 0);\n translateMaxX = -translateMinX;\n translateMaxY = -translateMinY;\n translateX = diffX * zoom.scale;\n translateY = diffY * zoom.scale;\n\n if (translateX < translateMinX) {\n translateX = translateMinX;\n }\n\n if (translateX > translateMaxX) {\n translateX = translateMaxX;\n }\n\n if (translateY < translateMinY) {\n translateY = translateMinY;\n }\n\n if (translateY > translateMaxY) {\n translateY = translateMaxY;\n }\n } else {\n translateX = 0;\n translateY = 0;\n }\n\n gesture.$imageWrapEl.transition(300).transform(`translate3d(${translateX}px, ${translateY}px,0)`);\n gesture.$imageEl.transition(300).transform(`translate3d(0,0,0) scale(${zoom.scale})`);\n }\n\n function zoomOut() {\n const zoom = swiper.zoom;\n const params = swiper.params.zoom;\n\n if (!gesture.$slideEl) {\n if (swiper.params.virtual && swiper.params.virtual.enabled && swiper.virtual) {\n gesture.$slideEl = swiper.$wrapperEl.children(`.${swiper.params.slideActiveClass}`);\n } else {\n gesture.$slideEl = swiper.slides.eq(swiper.activeIndex);\n }\n\n gesture.$imageEl = gesture.$slideEl.find(`.${params.containerClass}`).eq(0).find('picture, img, svg, canvas, .swiper-zoom-target').eq(0);\n gesture.$imageWrapEl = gesture.$imageEl.parent(`.${params.containerClass}`);\n }\n\n if (!gesture.$imageEl || gesture.$imageEl.length === 0 || !gesture.$imageWrapEl || gesture.$imageWrapEl.length === 0) return;\n\n if (swiper.params.cssMode) {\n swiper.wrapperEl.style.overflow = '';\n swiper.wrapperEl.style.touchAction = '';\n }\n\n zoom.scale = 1;\n currentScale = 1;\n gesture.$imageWrapEl.transition(300).transform('translate3d(0,0,0)');\n gesture.$imageEl.transition(300).transform('translate3d(0,0,0) scale(1)');\n gesture.$slideEl.removeClass(`${params.zoomedSlideClass}`);\n gesture.$slideEl = undefined;\n } // Toggle Zoom\n\n\n function zoomToggle(e) {\n const zoom = swiper.zoom;\n\n if (zoom.scale && zoom.scale !== 1) {\n // Zoom Out\n zoomOut();\n } else {\n // Zoom In\n zoomIn(e);\n }\n }\n\n function getListeners() {\n const support = swiper.support;\n const passiveListener = swiper.touchEvents.start === 'touchstart' && support.passiveListener && swiper.params.passiveListeners ? {\n passive: true,\n capture: false\n } : false;\n const activeListenerWithCapture = support.passiveListener ? {\n passive: false,\n capture: true\n } : true;\n return {\n passiveListener,\n activeListenerWithCapture\n };\n }\n\n function getSlideSelector() {\n return `.${swiper.params.slideClass}`;\n }\n\n function toggleGestures(method) {\n const {\n passiveListener\n } = getListeners();\n const slideSelector = getSlideSelector();\n swiper.$wrapperEl[method]('gesturestart', slideSelector, onGestureStart, passiveListener);\n swiper.$wrapperEl[method]('gesturechange', slideSelector, onGestureChange, passiveListener);\n swiper.$wrapperEl[method]('gestureend', slideSelector, onGestureEnd, passiveListener);\n }\n\n function enableGestures() {\n if (gesturesEnabled) return;\n gesturesEnabled = true;\n toggleGestures('on');\n }\n\n function disableGestures() {\n if (!gesturesEnabled) return;\n gesturesEnabled = false;\n toggleGestures('off');\n } // Attach/Detach Events\n\n\n function enable() {\n const zoom = swiper.zoom;\n if (zoom.enabled) return;\n zoom.enabled = true;\n const support = swiper.support;\n const {\n passiveListener,\n activeListenerWithCapture\n } = getListeners();\n const slideSelector = getSlideSelector(); // Scale image\n\n if (support.gestures) {\n swiper.$wrapperEl.on(swiper.touchEvents.start, enableGestures, passiveListener);\n swiper.$wrapperEl.on(swiper.touchEvents.end, disableGestures, passiveListener);\n } else if (swiper.touchEvents.start === 'touchstart') {\n swiper.$wrapperEl.on(swiper.touchEvents.start, slideSelector, onGestureStart, passiveListener);\n swiper.$wrapperEl.on(swiper.touchEvents.move, slideSelector, onGestureChange, activeListenerWithCapture);\n swiper.$wrapperEl.on(swiper.touchEvents.end, slideSelector, onGestureEnd, passiveListener);\n\n if (swiper.touchEvents.cancel) {\n swiper.$wrapperEl.on(swiper.touchEvents.cancel, slideSelector, onGestureEnd, passiveListener);\n }\n } // Move image\n\n\n swiper.$wrapperEl.on(swiper.touchEvents.move, `.${swiper.params.zoom.containerClass}`, onTouchMove, activeListenerWithCapture);\n }\n\n function disable() {\n const zoom = swiper.zoom;\n if (!zoom.enabled) return;\n const support = swiper.support;\n zoom.enabled = false;\n const {\n passiveListener,\n activeListenerWithCapture\n } = getListeners();\n const slideSelector = getSlideSelector(); // Scale image\n\n if (support.gestures) {\n swiper.$wrapperEl.off(swiper.touchEvents.start, enableGestures, passiveListener);\n swiper.$wrapperEl.off(swiper.touchEvents.end, disableGestures, passiveListener);\n } else if (swiper.touchEvents.start === 'touchstart') {\n swiper.$wrapperEl.off(swiper.touchEvents.start, slideSelector, onGestureStart, passiveListener);\n swiper.$wrapperEl.off(swiper.touchEvents.move, slideSelector, onGestureChange, activeListenerWithCapture);\n swiper.$wrapperEl.off(swiper.touchEvents.end, slideSelector, onGestureEnd, passiveListener);\n\n if (swiper.touchEvents.cancel) {\n swiper.$wrapperEl.off(swiper.touchEvents.cancel, slideSelector, onGestureEnd, passiveListener);\n }\n } // Move image\n\n\n swiper.$wrapperEl.off(swiper.touchEvents.move, `.${swiper.params.zoom.containerClass}`, onTouchMove, activeListenerWithCapture);\n }\n\n on('init', () => {\n if (swiper.params.zoom.enabled) {\n enable();\n }\n });\n on('destroy', () => {\n disable();\n });\n on('touchStart', (_s, e) => {\n if (!swiper.zoom.enabled) return;\n onTouchStart(e);\n });\n on('touchEnd', (_s, e) => {\n if (!swiper.zoom.enabled) return;\n onTouchEnd(e);\n });\n on('doubleTap', (_s, e) => {\n if (!swiper.animating && swiper.params.zoom.enabled && swiper.zoom.enabled && swiper.params.zoom.toggle) {\n zoomToggle(e);\n }\n });\n on('transitionEnd', () => {\n if (swiper.zoom.enabled && swiper.params.zoom.enabled) {\n onTransitionEnd();\n }\n });\n on('slideChange', () => {\n if (swiper.zoom.enabled && swiper.params.zoom.enabled && swiper.params.cssMode) {\n onTransitionEnd();\n }\n });\n Object.assign(swiper.zoom, {\n enable,\n disable,\n in: zoomIn,\n out: zoomOut,\n toggle: zoomToggle\n });\n}","export default function classesToSelector(classes = '') {\n return `.${classes.trim().replace(/([\\.:!\\/])/g, '\\\\$1') // eslint-disable-line\n .replace(/ /g, '.')}`;\n}","import { getDocument } from 'ssr-window';\nexport default function createElementIfNotDefined(swiper, originalParams, params, checkProps) {\n const document = getDocument();\n\n if (swiper.params.createElements) {\n Object.keys(checkProps).forEach(key => {\n if (!params[key] && params.auto === true) {\n let element = swiper.$el.children(`.${checkProps[key]}`)[0];\n\n if (!element) {\n element = document.createElement('div');\n element.className = checkProps[key];\n swiper.$el.append(element);\n }\n\n params[key] = element;\n originalParams[key] = element;\n }\n });\n }\n\n return params;\n}","import $ from './dom.js';\nexport default function createShadow(params, $slideEl, side) {\n const shadowClass = `swiper-slide-shadow${side ? `-${side}` : ''}`;\n const $shadowContainer = params.transformEl ? $slideEl.find(params.transformEl) : $slideEl;\n let $shadowEl = $shadowContainer.children(`.${shadowClass}`);\n\n if (!$shadowEl.length) {\n $shadowEl = $(`
`);\n $shadowContainer.append($shadowEl);\n }\n\n return $shadowEl;\n}","import { $, addClass, removeClass, hasClass, toggleClass, attr, removeAttr, transform, transition, on, off, trigger, transitionEnd, outerWidth, outerHeight, styles, offset, css, each, html, text, is, index, eq, append, prepend, next, nextAll, prev, prevAll, parent, parents, closest, find, children, filter, remove } from 'dom7';\nconst Methods = {\n addClass,\n removeClass,\n hasClass,\n toggleClass,\n attr,\n removeAttr,\n transform,\n transition,\n on,\n off,\n trigger,\n transitionEnd,\n outerWidth,\n outerHeight,\n styles,\n offset,\n css,\n each,\n html,\n text,\n is,\n index,\n eq,\n append,\n prepend,\n next,\n nextAll,\n prev,\n prevAll,\n parent,\n parents,\n closest,\n find,\n children,\n filter,\n remove\n};\nObject.keys(Methods).forEach(methodName => {\n Object.defineProperty($.fn, methodName, {\n value: Methods[methodName],\n writable: true\n });\n});\nexport default $;","export default function effectInit(params) {\n const {\n effect,\n swiper,\n on,\n setTranslate,\n setTransition,\n overwriteParams,\n perspective\n } = params;\n on('beforeInit', () => {\n if (swiper.params.effect !== effect) return;\n swiper.classNames.push(`${swiper.params.containerModifierClass}${effect}`);\n\n if (perspective && perspective()) {\n swiper.classNames.push(`${swiper.params.containerModifierClass}3d`);\n }\n\n const overwriteParamsResult = overwriteParams ? overwriteParams() : {};\n Object.assign(swiper.params, overwriteParamsResult);\n Object.assign(swiper.originalParams, overwriteParamsResult);\n });\n on('setTranslate', () => {\n if (swiper.params.effect !== effect) return;\n setTranslate();\n });\n on('setTransition', (_s, duration) => {\n if (swiper.params.effect !== effect) return;\n setTransition(duration);\n });\n}","export default function effectTarget(effectParams, $slideEl) {\n if (effectParams.transformEl) {\n return $slideEl.find(effectParams.transformEl).css({\n 'backface-visibility': 'hidden',\n '-webkit-backface-visibility': 'hidden'\n });\n }\n\n return $slideEl;\n}","export default function effectVirtualTransitionEnd({\n swiper,\n duration,\n transformEl,\n allSlides\n}) {\n const {\n slides,\n activeIndex,\n $wrapperEl\n } = swiper;\n\n if (swiper.params.virtualTranslate && duration !== 0) {\n let eventTriggered = false;\n let $transitionEndTarget;\n\n if (allSlides) {\n $transitionEndTarget = transformEl ? slides.find(transformEl) : slides;\n } else {\n $transitionEndTarget = transformEl ? slides.eq(activeIndex).find(transformEl) : slides.eq(activeIndex);\n }\n\n $transitionEndTarget.transitionEnd(() => {\n if (eventTriggered) return;\n if (!swiper || swiper.destroyed) return;\n eventTriggered = true;\n swiper.animating = false;\n const triggerEvents = ['webkitTransitionEnd', 'transitionend'];\n\n for (let i = 0; i < triggerEvents.length; i += 1) {\n $wrapperEl.trigger(triggerEvents[i]);\n }\n });\n }\n}","import { getWindow } from 'ssr-window';\nlet browser;\n\nfunction calcBrowser() {\n const window = getWindow();\n\n function isSafari() {\n const ua = window.navigator.userAgent.toLowerCase();\n return ua.indexOf('safari') >= 0 && ua.indexOf('chrome') < 0 && ua.indexOf('android') < 0;\n }\n\n return {\n isSafari: isSafari(),\n isWebView: /(iPhone|iPod|iPad).*AppleWebKit(?!.*Safari)/i.test(window.navigator.userAgent)\n };\n}\n\nfunction getBrowser() {\n if (!browser) {\n browser = calcBrowser();\n }\n\n return browser;\n}\n\nexport { getBrowser };","import { getWindow } from 'ssr-window';\nimport { getSupport } from './get-support.js';\nlet deviceCached;\n\nfunction calcDevice({\n userAgent\n} = {}) {\n const support = getSupport();\n const window = getWindow();\n const platform = window.navigator.platform;\n const ua = userAgent || window.navigator.userAgent;\n const device = {\n ios: false,\n android: false\n };\n const screenWidth = window.screen.width;\n const screenHeight = window.screen.height;\n const android = ua.match(/(Android);?[\\s\\/]+([\\d.]+)?/); // eslint-disable-line\n\n let ipad = ua.match(/(iPad).*OS\\s([\\d_]+)/);\n const ipod = ua.match(/(iPod)(.*OS\\s([\\d_]+))?/);\n const iphone = !ipad && ua.match(/(iPhone\\sOS|iOS)\\s([\\d_]+)/);\n const windows = platform === 'Win32';\n let macos = platform === 'MacIntel'; // iPadOs 13 fix\n\n const iPadScreens = ['1024x1366', '1366x1024', '834x1194', '1194x834', '834x1112', '1112x834', '768x1024', '1024x768', '820x1180', '1180x820', '810x1080', '1080x810'];\n\n if (!ipad && macos && support.touch && iPadScreens.indexOf(`${screenWidth}x${screenHeight}`) >= 0) {\n ipad = ua.match(/(Version)\\/([\\d.]+)/);\n if (!ipad) ipad = [0, 1, '13_0_0'];\n macos = false;\n } // Android\n\n\n if (android && !windows) {\n device.os = 'android';\n device.android = true;\n }\n\n if (ipad || iphone || ipod) {\n device.os = 'ios';\n device.ios = true;\n } // Export object\n\n\n return device;\n}\n\nfunction getDevice(overrides = {}) {\n if (!deviceCached) {\n deviceCached = calcDevice(overrides);\n }\n\n return deviceCached;\n}\n\nexport { getDevice };","import { getWindow, getDocument } from 'ssr-window';\nlet support;\n\nfunction calcSupport() {\n const window = getWindow();\n const document = getDocument();\n return {\n smoothScroll: document.documentElement && 'scrollBehavior' in document.documentElement.style,\n touch: !!('ontouchstart' in window || window.DocumentTouch && document instanceof window.DocumentTouch),\n passiveListener: function checkPassiveListener() {\n let supportsPassive = false;\n\n try {\n const opts = Object.defineProperty({}, 'passive', {\n // eslint-disable-next-line\n get() {\n supportsPassive = true;\n }\n\n });\n window.addEventListener('testPassiveListener', null, opts);\n } catch (e) {// No support\n }\n\n return supportsPassive;\n }(),\n gestures: function checkGestures() {\n return 'ongesturestart' in window;\n }()\n };\n}\n\nfunction getSupport() {\n if (!support) {\n support = calcSupport();\n }\n\n return support;\n}\n\nexport { getSupport };","import { getWindow } from 'ssr-window';\n\nfunction deleteProps(obj) {\n const object = obj;\n Object.keys(object).forEach(key => {\n try {\n object[key] = null;\n } catch (e) {// no getter for object\n }\n\n try {\n delete object[key];\n } catch (e) {// something got wrong\n }\n });\n}\n\nfunction nextTick(callback, delay = 0) {\n return setTimeout(callback, delay);\n}\n\nfunction now() {\n return Date.now();\n}\n\nfunction getComputedStyle(el) {\n const window = getWindow();\n let style;\n\n if (window.getComputedStyle) {\n style = window.getComputedStyle(el, null);\n }\n\n if (!style && el.currentStyle) {\n style = el.currentStyle;\n }\n\n if (!style) {\n style = el.style;\n }\n\n return style;\n}\n\nfunction getTranslate(el, axis = 'x') {\n const window = getWindow();\n let matrix;\n let curTransform;\n let transformMatrix;\n const curStyle = getComputedStyle(el, null);\n\n if (window.WebKitCSSMatrix) {\n curTransform = curStyle.transform || curStyle.webkitTransform;\n\n if (curTransform.split(',').length > 6) {\n curTransform = curTransform.split(', ').map(a => a.replace(',', '.')).join(', ');\n } // Some old versions of Webkit choke when 'none' is passed; pass\n // empty string instead in this case\n\n\n transformMatrix = new window.WebKitCSSMatrix(curTransform === 'none' ? '' : curTransform);\n } else {\n transformMatrix = curStyle.MozTransform || curStyle.OTransform || curStyle.MsTransform || curStyle.msTransform || curStyle.transform || curStyle.getPropertyValue('transform').replace('translate(', 'matrix(1, 0, 0, 1,');\n matrix = transformMatrix.toString().split(',');\n }\n\n if (axis === 'x') {\n // Latest Chrome and webkits Fix\n if (window.WebKitCSSMatrix) curTransform = transformMatrix.m41; // Crazy IE10 Matrix\n else if (matrix.length === 16) curTransform = parseFloat(matrix[12]); // Normal Browsers\n else curTransform = parseFloat(matrix[4]);\n }\n\n if (axis === 'y') {\n // Latest Chrome and webkits Fix\n if (window.WebKitCSSMatrix) curTransform = transformMatrix.m42; // Crazy IE10 Matrix\n else if (matrix.length === 16) curTransform = parseFloat(matrix[13]); // Normal Browsers\n else curTransform = parseFloat(matrix[5]);\n }\n\n return curTransform || 0;\n}\n\nfunction isObject(o) {\n return typeof o === 'object' && o !== null && o.constructor && Object.prototype.toString.call(o).slice(8, -1) === 'Object';\n}\n\nfunction isNode(node) {\n // eslint-disable-next-line\n if (typeof window !== 'undefined' && typeof window.HTMLElement !== 'undefined') {\n return node instanceof HTMLElement;\n }\n\n return node && (node.nodeType === 1 || node.nodeType === 11);\n}\n\nfunction extend(...args) {\n const to = Object(args[0]);\n const noExtend = ['__proto__', 'constructor', 'prototype'];\n\n for (let i = 1; i < args.length; i += 1) {\n const nextSource = args[i];\n\n if (nextSource !== undefined && nextSource !== null && !isNode(nextSource)) {\n const keysArray = Object.keys(Object(nextSource)).filter(key => noExtend.indexOf(key) < 0);\n\n for (let nextIndex = 0, len = keysArray.length; nextIndex < len; nextIndex += 1) {\n const nextKey = keysArray[nextIndex];\n const desc = Object.getOwnPropertyDescriptor(nextSource, nextKey);\n\n if (desc !== undefined && desc.enumerable) {\n if (isObject(to[nextKey]) && isObject(nextSource[nextKey])) {\n if (nextSource[nextKey].__swiper__) {\n to[nextKey] = nextSource[nextKey];\n } else {\n extend(to[nextKey], nextSource[nextKey]);\n }\n } else if (!isObject(to[nextKey]) && isObject(nextSource[nextKey])) {\n to[nextKey] = {};\n\n if (nextSource[nextKey].__swiper__) {\n to[nextKey] = nextSource[nextKey];\n } else {\n extend(to[nextKey], nextSource[nextKey]);\n }\n } else {\n to[nextKey] = nextSource[nextKey];\n }\n }\n }\n }\n }\n\n return to;\n}\n\nfunction setCSSProperty(el, varName, varValue) {\n el.style.setProperty(varName, varValue);\n}\n\nfunction animateCSSModeScroll({\n swiper,\n targetPosition,\n side\n}) {\n const window = getWindow();\n const startPosition = -swiper.translate;\n let startTime = null;\n let time;\n const duration = swiper.params.speed;\n swiper.wrapperEl.style.scrollSnapType = 'none';\n window.cancelAnimationFrame(swiper.cssModeFrameID);\n const dir = targetPosition > startPosition ? 'next' : 'prev';\n\n const isOutOfBound = (current, target) => {\n return dir === 'next' && current >= target || dir === 'prev' && current <= target;\n };\n\n const animate = () => {\n time = new Date().getTime();\n\n if (startTime === null) {\n startTime = time;\n }\n\n const progress = Math.max(Math.min((time - startTime) / duration, 1), 0);\n const easeProgress = 0.5 - Math.cos(progress * Math.PI) / 2;\n let currentPosition = startPosition + easeProgress * (targetPosition - startPosition);\n\n if (isOutOfBound(currentPosition, targetPosition)) {\n currentPosition = targetPosition;\n }\n\n swiper.wrapperEl.scrollTo({\n [side]: currentPosition\n });\n\n if (isOutOfBound(currentPosition, targetPosition)) {\n swiper.wrapperEl.style.overflow = 'hidden';\n swiper.wrapperEl.style.scrollSnapType = '';\n setTimeout(() => {\n swiper.wrapperEl.style.overflow = '';\n swiper.wrapperEl.scrollTo({\n [side]: currentPosition\n });\n });\n window.cancelAnimationFrame(swiper.cssModeFrameID);\n 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e=this.currentPointers.findIndex((e=>e.id===t.id));e<0||(this.currentPointers[e]=t)}this._moveCallback(e,this.currentPointers.slice(),t)},this._triggerPointerEnd=(t,e)=>{const i=this.currentPointers.findIndex((e=>e.id===t.id));return!(i<0)&&(this.currentPointers.splice(i,1),this.startPointers.splice(i,1),this._endCallback(t,e),!0)},this._pointerEnd=t=>{t.buttons>0&&0!==t.button||this._triggerPointerEnd(new n(t),t)&&(window.removeEventListener(\"mousemove\",this._move,{passive:!1}),window.removeEventListener(\"mouseup\",this._pointerEnd,{passive:!1}))},this._touchEnd=t=>{for(const e of Array.from(t.changedTouches||[]))this._triggerPointerEnd(new n(e),t)},this._startCallback=e,this._moveCallback=i,this._endCallback=s,this._element.addEventListener(\"mousedown\",this._pointerStart,{passive:!1}),this._element.addEventListener(\"touchstart\",this._touchStart,{passive:!1}),this._element.addEventListener(\"touchmove\",this._move,{passive:!1}),this._element.addEventListener(\"touchend\",this._touchEnd),this._element.addEventListener(\"touchcancel\",this._touchEnd)}stop(){this._element.removeEventListener(\"mousedown\",this._pointerStart,{passive:!1}),this._element.removeEventListener(\"touchstart\",this._touchStart,{passive:!1}),this._element.removeEventListener(\"touchmove\",this._move,{passive:!1}),this._element.removeEventListener(\"touchend\",this._touchEnd),this._element.removeEventListener(\"touchcancel\",this._touchEnd),window.removeEventListener(\"mousemove\",this._move),window.removeEventListener(\"mouseup\",this._pointerEnd)}_triggerPointerStart(t,e){return!!this._startCallback(t,e)&&(this.currentPointers.push(t),this.startPointers.push(t),!0)}}class l{constructor(t={}){this.options=e(!0,{},t),this.plugins=[],this.events={};for(const t of[\"on\",\"once\"])for(const e of Object.entries(this.options[t]||{}))this[t](...e)}option(t,e,...i){t=String(t);let s=(o=t,n=this.options,o.split(\".\").reduce((function(t,e){return t&&t[e]}),n));var o,n;return\"function\"==typeof s&&(s=s.call(this,this,...i)),void 0===s?e:s}localize(t,e=[]){return t=(t=String(t).replace(/\\{\\{(\\w+).?(\\w+)?\\}\\}/g,((t,i,s)=>{let o=\"\";s?o=this.option(`${i[0]+i.toLowerCase().substring(1)}.l10n.${s}`):i&&(o=this.option(`l10n.${i}`)),o||(o=t);for(let t=0;te))}on(e,i){if(t(e)){for(const t of Object.entries(e))this.on(...t);return this}return String(e).split(\" \").forEach((t=>{const e=this.events[t]=this.events[t]||[];-1==e.indexOf(i)&&e.push(i)})),this}once(e,i){if(t(e)){for(const t of Object.entries(e))this.once(...t);return this}return String(e).split(\" \").forEach((t=>{const e=(...s)=>{this.off(t,e),i.call(this,this,...s)};e._=i,this.on(t,e)})),this}off(e,i){if(!t(e))return e.split(\" \").forEach((t=>{const e=this.events[t];if(!e||!e.length)return this;let s=-1;for(let t=0,o=e.length;t1||Math.abs(e.left-this.dragStart.rect.left)>1))return t.preventDefault(),void t.stopPropagation();!1!==this.trigger(\"click\",t)&&this.option(\"zoom\")&&\"toggleZoom\"===this.option(\"click\")&&(t.preventDefault(),t.stopPropagation(),this.zoomWithClick(t))}onWheel(t){!1!==this.trigger(\"wheel\",t)&&this.option(\"zoom\")&&this.option(\"wheel\")&&this.zoomWithWheel(t)}zoomWithWheel(t){void 0===this.changedDelta&&(this.changedDelta=0);const e=Math.max(-1,Math.min(1,-t.deltaY||-t.deltaX||t.wheelDelta||-t.detail)),i=this.content.scale;let s=i*(100+e*this.option(\"wheelFactor\"))/100;if(e<0&&Math.abs(i-this.option(\"minScale\"))<.01||e>0&&Math.abs(i-this.option(\"maxScale\"))<.01?(this.changedDelta+=Math.abs(e),s=i):(this.changedDelta=0,s=Math.max(Math.min(s,this.option(\"maxScale\")),this.option(\"minScale\"))),this.changedDelta>this.option(\"wheelLimit\"))return;if(t.preventDefault(),s===i)return;const o=this.$content.getBoundingClientRect(),n=t.clientX-o.left,a=t.clientY-o.top;this.zoomTo(s,{x:n,y:a})}zoomWithClick(t){const e=this.$content.getClientRects()[0],i=t.clientX-e.left,s=t.clientY-e.top;this.toggleZoom({x:i,y:s})}attachEvents(){this.$content.addEventListener(\"load\",this.onLoad),this.$container.addEventListener(\"wheel\",this.onWheel,{passive:!1}),this.$container.addEventListener(\"click\",this.onClick,{passive:!1}),this.initObserver();const t=new h(this.$container,{start:(e,i)=>{if(!this.option(\"touch\"))return!1;if(this.velocity.scale<0)return!1;const o=i.composedPath()[0];if(!t.currentPointers.length){if(-1!==[\"BUTTON\",\"TEXTAREA\",\"OPTION\",\"INPUT\",\"SELECT\",\"VIDEO\"].indexOf(o.nodeName))return!1;if(this.option(\"textSelection\")&&((t,e,i)=>{const s=t.childNodes,o=document.createRange();for(let t=0;t=a.left&&i>=a.top&&e<=a.right&&i<=a.bottom)return n}return!1})(o,e.clientX,e.clientY))return!1}return!s(o)&&(!1!==this.trigger(\"touchStart\",i)&&(\"mousedown\"===i.type&&i.preventDefault(),this.state=\"pointerdown\",this.resetDragPosition(),this.dragPosition.midPoint=null,this.dragPosition.time=Date.now(),!0))},move:(e,i,s)=>{if(\"pointerdown\"!==this.state)return;if(!1===this.trigger(\"touchMove\",s))return void s.preventDefault();if(i.length<2&&!0===this.option(\"panOnlyZoomed\")&&this.content.width<=this.viewport.width&&this.content.height<=this.viewport.height&&this.transform.scale<=this.option(\"baseScale\"))return;if(i.length>1&&(!this.option(\"zoom\")||!1===this.option(\"pinchToZoom\")))return;const o=r(e[0],e[1]),n=r(i[0],i[1]),h=n.clientX-o.clientX,l=n.clientY-o.clientY,c=a(e[0],e[1]),d=a(i[0],i[1]),u=c&&d?d/c:1;this.dragOffset.x+=h,this.dragOffset.y+=l,this.dragOffset.scale*=u,this.dragOffset.time=Date.now()-this.dragPosition.time;const f=1===this.dragStart.scale&&this.option(\"lockAxis\");if(f&&!this.lockAxis){if(Math.abs(this.dragOffset.x)<6&&Math.abs(this.dragOffset.y)<6)return void s.preventDefault();const t=Math.abs(180*Math.atan2(this.dragOffset.y,this.dragOffset.x)/Math.PI);this.lockAxis=t>45&&t<135?\"y\":\"x\"}if(\"xy\"===f||\"y\"!==this.lockAxis){if(s.preventDefault(),s.stopPropagation(),s.stopImmediatePropagation(),this.lockAxis&&(this.dragOffset[\"x\"===this.lockAxis?\"y\":\"x\"]=0),this.$container.classList.add(this.option(\"draggingClass\")),this.transform.scale===this.option(\"baseScale\")&&\"y\"===this.lockAxis||(this.dragPosition.x=this.dragStart.x+this.dragOffset.x),this.transform.scale===this.option(\"baseScale\")&&\"x\"===this.lockAxis||(this.dragPosition.y=this.dragStart.y+this.dragOffset.y),this.dragPosition.scale=this.dragStart.scale*this.dragOffset.scale,i.length>1){const e=r(t.startPointers[0],t.startPointers[1]),i=e.clientX-this.dragStart.rect.x,s=e.clientY-this.dragStart.rect.y,{deltaX:o,deltaY:a}=this.getZoomDelta(this.content.scale*this.dragOffset.scale,i,s);this.dragPosition.x-=o,this.dragPosition.y-=a,this.dragPosition.midPoint=n}else this.setDragResistance();this.transform={x:this.dragPosition.x,y:this.dragPosition.y,scale:this.dragPosition.scale},this.startAnimation()}},end:(e,i)=>{if(\"pointerdown\"!==this.state)return;if(this._dragOffset={...this.dragOffset},t.currentPointers.length)return void this.resetDragPosition();if(this.state=\"decel\",this.friction=this.option(\"decelFriction\"),this.recalculateTransform(),this.$container.classList.remove(this.option(\"draggingClass\")),!1===this.trigger(\"touchEnd\",i))return;if(\"decel\"!==this.state)return;const s=this.option(\"minScale\");if(this.transform.scale.01){const t=this.dragPosition.midPoint||e,i=this.$content.getClientRects()[0];this.zoomTo(o,{friction:.64,x:t.clientX-i.left,y:t.clientY-i.top})}else;}});this.pointerTracker=t}initObserver(){this.resizeObserver||(this.resizeObserver=new o((()=>{this.updateTimer||(this.updateTimer=setTimeout((()=>{const t=this.$container.getBoundingClientRect();t.width&&t.height?((Math.abs(t.width-this.container.width)>1||Math.abs(t.height-this.container.height)>1)&&(this.isAnimating()&&this.endAnimation(!0),this.updateMetrics(),this.panTo({x:this.content.x,y:this.content.y,scale:this.option(\"baseScale\"),friction:0})),this.updateTimer=null):this.updateTimer=null}),this.updateRate))})),this.resizeObserver.observe(this.$container))}resetDragPosition(){this.lockAxis=null,this.friction=this.option(\"friction\"),this.velocity={x:0,y:0,scale:0};const{x:t,y:e,scale:i}=this.content;this.dragStart={rect:this.$content.getBoundingClientRect(),x:t,y:e,scale:i},this.dragPosition={...this.dragPosition,x:t,y:e,scale:i},this.dragOffset={x:0,y:0,scale:1,time:0}}updateMetrics(t){!0!==t&&this.trigger(\"beforeUpdate\");const e=this.$container,s=this.$content,o=this.$viewport,n=s instanceof HTMLImageElement,a=this.option(\"zoom\"),r=this.option(\"resizeParent\",a);let h=this.option(\"width\"),l=this.option(\"height\"),c=h||(d=s,Math.max(parseFloat(d.naturalWidth||0),parseFloat(d.width&&d.width.baseVal&&d.width.baseVal.value||0),parseFloat(d.offsetWidth||0),parseFloat(d.scrollWidth||0)));var d;let u=l||(t=>Math.max(parseFloat(t.naturalHeight||0),parseFloat(t.height&&t.height.baseVal&&t.height.baseVal.value||0),parseFloat(t.offsetHeight||0),parseFloat(t.scrollHeight||0)))(s);Object.assign(s.style,{width:h?`${h}px`:\"\",height:l?`${l}px`:\"\",maxWidth:\"\",maxHeight:\"\"}),r&&Object.assign(o.style,{width:\"\",height:\"\"});const f=this.option(\"ratio\");c=i(c*f),u=i(u*f),h=c,l=u;const g=s.getBoundingClientRect(),p=o.getBoundingClientRect(),m=o==e?p:e.getBoundingClientRect();let y=Math.max(o.offsetWidth,i(p.width)),v=Math.max(o.offsetHeight,i(p.height)),b=window.getComputedStyle(o);if(y-=parseFloat(b.paddingLeft)+parseFloat(b.paddingRight),v-=parseFloat(b.paddingTop)+parseFloat(b.paddingBottom),this.viewport.width=y,this.viewport.height=v,a){if(Math.abs(c-g.width)>.1||Math.abs(u-g.height)>.1){const t=((t,e,i,s)=>{const o=Math.min(i/t||0,s/e);return{width:t*o||0,height:e*o||0}})(c,u,Math.min(c,g.width),Math.min(u,g.height));h=i(t.width),l=i(t.height)}Object.assign(s.style,{width:`${h}px`,height:`${l}px`,transform:\"\"})}if(r&&(Object.assign(o.style,{width:`${h}px`,height:`${l}px`}),this.viewport={...this.viewport,width:h,height:l}),n&&a&&\"function\"!=typeof this.options.maxScale){const t=this.option(\"maxScale\");this.options.maxScale=function(){return this.content.origWidth>0&&this.content.fitWidth>0?this.content.origWidth/this.content.fitWidth:t}}this.content={...this.content,origWidth:c,origHeight:u,fitWidth:h,fitHeight:l,width:h,height:l,scale:1,isZoomable:a},this.container={width:m.width,height:m.height},!0!==t&&this.trigger(\"afterUpdate\")}zoomIn(t){this.zoomTo(this.content.scale+(t||this.option(\"step\")))}zoomOut(t){this.zoomTo(this.content.scale-(t||this.option(\"step\")))}toggleZoom(t={}){const e=this.option(\"maxScale\"),i=this.option(\"baseScale\"),s=this.content.scale>i+.5*(e-i)?i:e;this.zoomTo(s,t)}zoomTo(t=this.option(\"baseScale\"),{x:e=null,y:s=null}={}){t=Math.max(Math.min(t,this.option(\"maxScale\")),this.option(\"minScale\"));const o=i(this.content.scale/(this.content.width/this.content.fitWidth),1e7);null===e&&(e=this.content.width*o*.5),null===s&&(s=this.content.height*o*.5);const{deltaX:n,deltaY:a}=this.getZoomDelta(t,e,s);e=this.content.x-n,s=this.content.y-a,this.panTo({x:e,y:s,scale:t,friction:this.option(\"zoomFriction\")})}getZoomDelta(t,e=0,i=0){const s=this.content.fitWidth*this.content.scale,o=this.content.fitHeight*this.content.scale,n=e>0&&s?e/s:0,a=i>0&&o?i/o:0;return{deltaX:(this.content.fitWidth*t-s)*n,deltaY:(this.content.fitHeight*t-o)*a}}panTo({x:t=this.content.x,y:e=this.content.y,scale:i,friction:s=this.option(\"friction\"),ignoreBounds:o=!1}={}){if(i=i||this.content.scale||1,!o){const{boundX:s,boundY:o}=this.getBounds(i);s&&(t=Math.max(Math.min(t,s.to),s.from)),o&&(e=Math.max(Math.min(e,o.to),o.from))}this.friction=s,this.transform={...this.transform,x:t,y:e,scale:i},s?(this.state=\"panning\",this.velocity={x:(1/this.friction-1)*(t-this.content.x),y:(1/this.friction-1)*(e-this.content.y),scale:(1/this.friction-1)*(i-this.content.scale)},this.startAnimation()):this.endAnimation()}startAnimation(){this.rAF?cancelAnimationFrame(this.rAF):this.trigger(\"startAnimation\"),this.rAF=requestAnimationFrame((()=>this.animate()))}animate(){if(this.setEdgeForce(),this.setDragForce(),this.velocity.x*=this.friction,this.velocity.y*=this.friction,this.velocity.scale*=this.friction,this.content.x+=this.velocity.x,this.content.y+=this.velocity.y,this.content.scale+=this.velocity.scale,this.isAnimating())this.setTransform();else if(\"pointerdown\"!==this.state)return void this.endAnimation();this.rAF=requestAnimationFrame((()=>this.animate()))}getBounds(t){let e=this.boundX,s=this.boundY;if(void 0!==e&&void 0!==s)return{boundX:e,boundY:s};e={from:0,to:0},s={from:0,to:0},t=t||this.transform.scale;const o=this.content.fitWidth*t,n=this.content.fitHeight*t,a=this.viewport.width,r=this.viewport.height;if(oe.to),i&&(n=this.content.yi.to),s||o){let i=((s?e.from:e.to)-this.content.x)*t;const o=this.content.x+(this.velocity.x+i)/this.friction;o>=e.from&&o<=e.to&&(i+=this.velocity.x),this.velocity.x=i,this.recalculateTransform()}if(n||a){let e=((n?i.from:i.to)-this.content.y)*t;const s=this.content.y+(e+this.velocity.y)/this.friction;s>=i.from&&s<=i.to&&(e+=this.velocity.y),this.velocity.y=e,this.recalculateTransform()}}setDragResistance(){if(\"pointerdown\"!==this.state)return;const{boundX:t,boundY:e}=this.getBounds(this.dragPosition.scale);let i,s,o,n;if(t&&(i=this.dragPosition.xt.to),e&&(o=this.dragPosition.ye.to),(i||s)&&(!i||!s)){const e=i?t.from:t.to,s=e-this.dragPosition.x;this.dragPosition.x=e-.3*s}if((o||n)&&(!o||!n)){const t=o?e.from:e.to,i=t-this.dragPosition.y;this.dragPosition.y=t-.3*i}}setDragForce(){\"pointerdown\"===this.state&&(this.velocity.x=this.dragPosition.x-this.content.x,this.velocity.y=this.dragPosition.y-this.content.y,this.velocity.scale=this.dragPosition.scale-this.content.scale)}recalculateTransform(){this.transform.x=this.content.x+this.velocity.x/(1/this.friction-1),this.transform.y=this.content.y+this.velocity.y/(1/this.friction-1),this.transform.scale=this.content.scale+this.velocity.scale/(1/this.friction-1)}isAnimating(){return!(!this.friction||!(Math.abs(this.velocity.x)>.05||Math.abs(this.velocity.y)>.05||Math.abs(this.velocity.scale)>.05))}setTransform(t){let e,s,o;if(t?(e=i(this.transform.x),s=i(this.transform.y),o=this.transform.scale,this.content={...this.content,x:e,y:s,scale:o}):(e=i(this.content.x),s=i(this.content.y),o=this.content.scale/(this.content.width/this.content.fitWidth),this.content={...this.content,x:e,y:s}),this.trigger(\"beforeTransform\"),e=i(this.content.x),s=i(this.content.y),t&&this.option(\"zoom\")){let t,n;t=i(this.content.fitWidth*o),n=i(this.content.fitHeight*o),this.content.width=t,this.content.height=n,this.transform={...this.transform,width:t,height:n,scale:o},Object.assign(this.$content.style,{width:`${t}px`,height:`${n}px`,maxWidth:\"none\",maxHeight:\"none\",transform:`translate3d(${e}px, ${s}px, 0) scale(1)`})}else this.$content.style.transform=`translate3d(${e}px, ${s}px, 0) scale(${o})`;this.trigger(\"afterTransform\")}endAnimation(t){cancelAnimationFrame(this.rAF),this.rAF=null,this.velocity={x:0,y:0,scale:0},this.setTransform(!0),this.state=\"ready\",this.handleCursor(),!0!==t&&this.trigger(\"endAnimation\")}handleCursor(){const t=this.option(\"draggableClass\");t&&this.option(\"touch\")&&(1==this.option(\"panOnlyZoomed\")&&this.content.width<=this.viewport.width&&this.content.height<=this.viewport.height&&this.transform.scale<=this.option(\"baseScale\")?this.$container.classList.remove(t):this.$container.classList.add(t))}detachEvents(){this.$content.removeEventListener(\"load\",this.onLoad),this.$container.removeEventListener(\"wheel\",this.onWheel,{passive:!1}),this.$container.removeEventListener(\"click\",this.onClick,{passive:!1}),this.pointerTracker&&(this.pointerTracker.stop(),this.pointerTracker=null),this.resizeObserver&&(this.resizeObserver.disconnect(),this.resizeObserver=null)}destroy(){\"destroy\"!==this.state&&(this.state=\"destroy\",clearTimeout(this.updateTimer),this.updateTimer=null,cancelAnimationFrame(this.rAF),this.rAF=null,this.detachEvents(),this.detachPlugins(),this.resetDragPosition())}}d.version=\"4.0.31\",d.Plugins={};const u=(t,e)=>{let i=0;return function(...s){const o=(new Date).getTime();if(!(o-i{e.preventDefault(),e.stopPropagation(),this.carousel[\"slide\"+(\"next\"===t?\"Next\":\"Prev\")]()})),e}build(){this.$container||(this.$container=document.createElement(\"div\"),this.$container.classList.add(...this.option(\"classNames.main\").split(\" \")),this.carousel.$container.appendChild(this.$container)),this.$next||(this.$next=this.createButton(\"next\"),this.$container.appendChild(this.$next)),this.$prev||(this.$prev=this.createButton(\"prev\"),this.$container.appendChild(this.$prev))}onRefresh(){const t=this.carousel.pages.length;t<=1||t>1&&this.carousel.elemDimWidth=t-1&&this.$next.setAttribute(\"disabled\",\"\")))}cleanup(){this.$prev&&this.$prev.remove(),this.$prev=null,this.$next&&this.$next.remove(),this.$next=null,this.$container&&this.$container.remove(),this.$container=null}attach(){this.carousel.on(\"refresh change\",this.onRefresh)}detach(){this.carousel.off(\"refresh change\",this.onRefresh),this.cleanup()}}f.defaults={prevTpl:'',nextTpl:'',classNames:{main:\"carousel__nav\",button:\"carousel__button\",next:\"is-next\",prev:\"is-prev\"}};class g{constructor(t){this.carousel=t,this.selectedIndex=null,this.friction=0,this.onNavReady=this.onNavReady.bind(this),this.onNavClick=this.onNavClick.bind(this),this.onNavCreateSlide=this.onNavCreateSlide.bind(this),this.onTargetChange=this.onTargetChange.bind(this)}addAsTargetFor(t){this.target=this.carousel,this.nav=t,this.attachEvents()}addAsNavFor(t){this.target=t,this.nav=this.carousel,this.attachEvents()}attachEvents(){this.nav.options.initialSlide=this.target.options.initialPage,this.nav.on(\"ready\",this.onNavReady),this.nav.on(\"createSlide\",this.onNavCreateSlide),this.nav.on(\"Panzoom.click\",this.onNavClick),this.target.on(\"change\",this.onTargetChange),this.target.on(\"Panzoom.afterUpdate\",this.onTargetChange)}onNavReady(){this.onTargetChange(!0)}onNavClick(t,e,i){const s=i.target.closest(\".carousel__slide\");if(!s)return;i.stopPropagation();const o=parseInt(s.dataset.index,10),n=this.target.findPageForSlide(o);this.target.page!==n&&this.target.slideTo(n,{friction:this.friction}),this.markSelectedSlide(o)}onNavCreateSlide(t,e){e.index===this.selectedIndex&&this.markSelectedSlide(e.index)}onTargetChange(){const t=this.target.pages[this.target.page].indexes[0],e=this.nav.findPageForSlide(t);this.nav.slideTo(e),this.markSelectedSlide(t)}markSelectedSlide(t){this.selectedIndex=t,[...this.nav.slides].filter((t=>t.$el&&t.$el.classList.remove(\"is-nav-selected\")));const e=this.nav.slides[t];e&&e.$el&&e.$el.classList.add(\"is-nav-selected\")}attach(t){const e=t.options.Sync;(e.target||e.nav)&&(e.target?this.addAsNavFor(e.target):e.nav&&this.addAsTargetFor(e.nav),this.friction=e.friction)}detach(){this.nav&&(this.nav.off(\"ready\",this.onNavReady),this.nav.off(\"Panzoom.click\",this.onNavClick),this.nav.off(\"createSlide\",this.onNavCreateSlide)),this.target&&(this.target.off(\"Panzoom.afterUpdate\",this.onTargetChange),this.target.off(\"change\",this.onTargetChange))}}g.defaults={friction:.92};const p={Navigation:f,Dots:class{constructor(t){this.carousel=t,this.$list=null,this.events={change:this.onChange.bind(this),refresh:this.onRefresh.bind(this)}}buildList(){if(this.carousel.pages.length{if(!(\"page\"in t.target.dataset))return;t.preventDefault(),t.stopPropagation();const e=parseInt(t.target.dataset.page,10),i=this.carousel;e!==i.page&&(i.pages.length<3&&i.option(\"infinite\")?i[0==e?\"slidePrev\":\"slideNext\"]():i.slideTo(e))})),this.$list=t,this.carousel.$container.appendChild(t),this.carousel.$container.classList.add(\"has-dots\"),t}removeList(){this.$list&&(this.$list.parentNode.removeChild(this.$list),this.$list=null),this.carousel.$container.classList.remove(\"has-dots\")}rebuildDots(){let t=this.$list;const e=!!t,i=this.carousel.pages.length;if(i<2)return void(e&&this.removeList());e||(t=this.buildList());const s=this.$list.children.length;if(s>i)for(let t=i;t{const i=t.code;let s;\"Enter\"===i||\"NumpadEnter\"===i?s=e:\"ArrowRight\"===i?s=e.nextSibling:\"ArrowLeft\"===i&&(s=e.previousSibling),s&&s.click()})),this.$list.appendChild(e)}this.setActiveDot()}}setActiveDot(){if(!this.$list)return;this.$list.childNodes.forEach((t=>{t.classList.remove(\"is-selected\")}));const t=this.$list.childNodes[this.carousel.page];t&&t.classList.add(\"is-selected\")}onChange(){this.setActiveDot()}onRefresh(){this.rebuildDots()}attach(){this.carousel.on(this.events)}detach(){this.removeList(),this.carousel.off(this.events),this.carousel=null}},Sync:g};const m={slides:[],preload:0,slidesPerPage:\"auto\",initialPage:null,initialSlide:null,friction:.92,center:!0,infinite:!0,fill:!0,dragFree:!1,prefix:\"\",classNames:{viewport:\"carousel__viewport\",track:\"carousel__track\",slide:\"carousel__slide\",slideSelected:\"is-selected\"},l10n:{NEXT:\"Next slide\",PREV:\"Previous slide\",GOTO:\"Go to slide #%d\"}};class y extends l{constructor(t,i={}){if(super(i=e(!0,{},m,i)),this.state=\"init\",this.$container=t,!(this.$container instanceof HTMLElement))throw new Error(\"No root element provided\");this.slideNext=u(this.slideNext.bind(this),250),this.slidePrev=u(this.slidePrev.bind(this),250),this.init(),t.__Carousel=this}init(){this.pages=[],this.page=this.pageIndex=null,this.prevPage=this.prevPageIndex=null,this.attachPlugins(y.Plugins),this.trigger(\"init\"),this.initLayout(),this.initSlides(),this.updateMetrics(),this.$track&&this.pages.length&&(this.$track.style.transform=`translate3d(${-1*this.pages[this.page].left}px, 0px, 0) scale(1)`),this.manageSlideVisiblity(),this.initPanzoom(),this.state=\"ready\",this.trigger(\"ready\")}initLayout(){const t=this.option(\"prefix\"),e=this.option(\"classNames\");this.$viewport=this.option(\"viewport\")||this.$container.querySelector(`.${t}${e.viewport}`),this.$viewport||(this.$viewport=document.createElement(\"div\"),this.$viewport.classList.add(...(t+e.viewport).split(\" \")),this.$viewport.append(...this.$container.childNodes),this.$container.appendChild(this.$viewport)),this.$track=this.option(\"track\")||this.$container.querySelector(`.${t}${e.track}`),this.$track||(this.$track=document.createElement(\"div\"),this.$track.classList.add(...(t+e.track).split(\" \")),this.$track.append(...this.$viewport.childNodes),this.$viewport.appendChild(this.$track))}initSlides(){this.slides=[];this.$viewport.querySelectorAll(`.${this.option(\"prefix\")}${this.option(\"classNames.slide\")}`).forEach((t=>{const e={$el:t,isDom:!0};this.slides.push(e),this.trigger(\"createSlide\",e,this.slides.length)})),Array.isArray(this.options.slides)&&(this.slides=e(!0,[...this.slides],this.options.slides))}updateMetrics(){let t,e=0,s=[];this.slides.forEach(((i,o)=>{const n=i.$el,a=i.isDom||!t?this.getSlideMetrics(n):t;i.index=o,i.width=a,i.left=e,t=a,e+=a,s.push(o)}));let o=Math.max(this.$track.offsetWidth,i(this.$track.getBoundingClientRect().width)),n=getComputedStyle(this.$track);o-=parseFloat(n.paddingLeft)+parseFloat(n.paddingRight),this.contentWidth=e,this.viewportWidth=o;const a=[],r=this.option(\"slidesPerPage\");if(Number.isInteger(r)&&e>o)for(let t=0;to)&&(a.push({indexes:[],slides:[]}),t=a.length-1,e=0),e+=s.width,a[t].indexes.push(i),a[t].slides.push(s)}}const h=this.option(\"center\"),l=this.option(\"fill\");a.forEach(((t,i)=>{t.index=i,t.width=t.slides.reduce(((t,e)=>t+e.width),0),t.left=t.slides[0].left,h&&(t.left+=.5*(o-t.width)*-1),l&&!this.option(\"infiniteX\",this.option(\"infinite\"))&&e>o&&(t.left=Math.max(t.left,0),t.left=Math.min(t.left,e-o))}));const c=[];let d;a.forEach((t=>{const e={...t};d&&e.left===d.left?(d.width+=e.width,d.slides=[...d.slides,...e.slides],d.indexes=[...d.indexes,...e.indexes]):(e.index=c.length,d=e,c.push(e))})),this.pages=c;let u=this.page;if(null===u){const t=this.option(\"initialSlide\");u=null!==t?this.findPageForSlide(t):parseInt(this.option(\"initialPage\",0),10)||0,c[u]||(u=c.length&&u>c.length?c[c.length-1].index:0),this.page=u,this.pageIndex=u}this.updatePanzoom(),this.trigger(\"refresh\")}getSlideMetrics(t){if(!t){const e=this.slides[0];(t=document.createElement(\"div\")).dataset.isTestEl=1,t.style.visibility=\"hidden\",t.classList.add(...(this.option(\"prefix\")+this.option(\"classNames.slide\")).split(\" \")),e.customClass&&t.classList.add(...e.customClass.split(\" \")),this.$track.prepend(t)}let e=Math.max(t.offsetWidth,i(t.getBoundingClientRect().width));const s=t.currentStyle||window.getComputedStyle(t);return e=e+(parseFloat(s.marginLeft)||0)+(parseFloat(s.marginRight)||0),t.dataset.isTestEl&&t.remove(),e}findPageForSlide(t){t=parseInt(t,10)||0;const e=this.pages.find((e=>e.indexes.indexOf(t)>-1));return e?e.index:null}slideNext(){this.slideTo(this.pageIndex+1)}slidePrev(){this.slideTo(this.pageIndex-1)}slideTo(t,e={}){const{x:i=-1*this.setPage(t,!0),y:s=0,friction:o=this.option(\"friction\")}=e;this.Panzoom.content.x===i&&!this.Panzoom.velocity.x&&o||(this.Panzoom.panTo({x:i,y:s,friction:o,ignoreBounds:!0}),\"ready\"===this.state&&\"ready\"===this.Panzoom.state&&this.trigger(\"settle\"))}initPanzoom(){this.Panzoom&&this.Panzoom.destroy();const t=e(!0,{},{content:this.$track,wrapInner:!1,resizeParent:!1,zoom:!1,click:!1,lockAxis:\"x\",x:this.pages.length?-1*this.pages[this.page].left:0,centerOnStart:!1,textSelection:()=>this.option(\"textSelection\",!1),panOnlyZoomed:function(){return this.content.width<=this.viewport.width}},this.option(\"Panzoom\"));this.Panzoom=new d(this.$container,t),this.Panzoom.on({\"*\":(t,...e)=>this.trigger(`Panzoom.${t}`,...e),afterUpdate:()=>{this.updatePage()},beforeTransform:this.onBeforeTransform.bind(this),touchEnd:this.onTouchEnd.bind(this),endAnimation:()=>{this.trigger(\"settle\")}}),this.updateMetrics(),this.manageSlideVisiblity()}updatePanzoom(){this.Panzoom&&(this.Panzoom.content={...this.Panzoom.content,fitWidth:this.contentWidth,origWidth:this.contentWidth,width:this.contentWidth},this.pages.length>1&&this.option(\"infiniteX\",this.option(\"infinite\"))?this.Panzoom.boundX=null:this.pages.length&&(this.Panzoom.boundX={from:-1*this.pages[this.pages.length-1].left,to:-1*this.pages[0].left}),this.option(\"infiniteY\",this.option(\"infinite\"))?this.Panzoom.boundY=null:this.Panzoom.boundY={from:0,to:0},this.Panzoom.handleCursor())}manageSlideVisiblity(){const t=this.contentWidth,e=this.viewportWidth;let i=this.Panzoom?-1*this.Panzoom.content.x:this.pages.length?this.pages[this.page].left:0;const s=this.option(\"preload\"),o=this.option(\"infiniteX\",this.option(\"infinite\")),n=parseFloat(getComputedStyle(this.$viewport,null).getPropertyValue(\"padding-left\")),a=parseFloat(getComputedStyle(this.$viewport,null).getPropertyValue(\"padding-right\"));this.slides.forEach((r=>{let h,l,c=0;h=i-n,l=i+e+a,h-=s*(e+n+a),l+=s*(e+n+a);const d=r.left+r.width>h&&r.lefth&&r.lefth&&r.lefti&&r.left<=i+e+a&&(c=0)):this.removeSlideEl(r),r.hasDiff=c}));let r=0,h=0;this.slides.forEach(((e,i)=>{let s=0;e.$el?(i!==r||e.hasDiff?s=h+e.hasDiff*t:h=0,e.$el.style.left=Math.abs(s)>.1?`${h+e.hasDiff*t}px`:\"\",r++):h+=e.width})),this.markSelectedSlides()}createSlideEl(t){if(!t)return;if(t.$el){let e=t.$el.dataset.index;if(!e||parseInt(e,10)!==t.index){let e;t.$el.dataset.index=t.index,t.$el.querySelectorAll(\"[data-lazy-srcset]\").forEach((t=>{t.srcset=t.dataset.lazySrcset})),t.$el.querySelectorAll(\"[data-lazy-src]\").forEach((t=>{let e=t.dataset.lazySrc;t instanceof HTMLImageElement?t.src=e:t.style.backgroundImage=`url('${e}')`})),(e=t.$el.dataset.lazySrc)&&(t.$el.style.backgroundImage=`url('${e}')`),t.state=\"ready\"}return}const e=document.createElement(\"div\");e.dataset.index=t.index,e.classList.add(...(this.option(\"prefix\")+this.option(\"classNames.slide\")).split(\" \")),t.customClass&&e.classList.add(...t.customClass.split(\" \")),t.html&&(e.innerHTML=t.html);const i=[];this.slides.forEach(((t,e)=>{t.$el&&i.push(e)}));const s=t.index;let o=null;if(i.length){let t=i.reduce(((t,e)=>Math.abs(e-s){const o=i.$el;if(!o)return;const n=this.pages[this.page];n&&n.indexes&&n.indexes.indexOf(s)>-1?(t&&!o.classList.contains(t)&&(o.classList.add(t),this.trigger(\"selectSlide\",i)),o.removeAttribute(e)):(t&&o.classList.contains(t)&&(o.classList.remove(t),this.trigger(\"unselectSlide\",i)),o.setAttribute(e,!0))}))}updatePage(){this.updateMetrics(),this.slideTo(this.page,{friction:0})}onBeforeTransform(){this.option(\"infiniteX\",this.option(\"infinite\"))&&this.manageInfiniteTrack(),this.manageSlideVisiblity()}manageInfiniteTrack(){const t=this.contentWidth,e=this.viewportWidth;if(!this.option(\"infiniteX\",this.option(\"infinite\"))||this.pages.length<2||te&&(i.content.x-=t,this.pageIndex=this.pageIndex+this.pages.length,s=!0),s&&\"pointerdown\"===i.state&&i.resetDragPosition(),s}onTouchEnd(t,e){const i=this.option(\"dragFree\");if(!i&&this.pages.length>1&&t.dragOffset.time<350&&Math.abs(t.dragOffset.y)<1&&Math.abs(t.dragOffset.x)>5)this[t.dragOffset.x<0?\"slideNext\":\"slidePrev\"]();else if(i){const[,e]=this.getPageFromPosition(-1*t.transform.x);this.setPage(e)}else this.slideToClosest()}slideToClosest(t={}){let[,e]=this.getPageFromPosition(-1*this.Panzoom.content.x);this.slideTo(e,t)}getPageFromPosition(t){const e=this.pages.length;this.option(\"center\")&&(t+=.5*this.viewportWidth);const i=Math.floor(t/this.contentWidth);t-=i*this.contentWidth;let s=this.slides.find((e=>e.left<=t&&e.left+e.width>t));if(s){let t=this.findPageForSlide(s.index);return[t,t+i*e]}return[0,0]}setPage(t,e){let i=0,s=parseInt(t,10)||0;const o=this.page,n=this.pageIndex,a=this.pages.length,r=this.contentWidth,h=this.viewportWidth;if(t=(s%a+a)%a,this.option(\"infiniteX\",this.option(\"infinite\"))&&r>h){const o=Math.floor(s/a)||0,n=r;if(i=this.pages[t].left+o*n,!0===e&&a>2){let t=-1*this.Panzoom.content.x;const e=i-n,o=i+n,r=Math.abs(t-i),h=Math.abs(t-e),l=Math.abs(t-o);l{this.removeSlideEl(t)})),this.slides=[],this.Panzoom.destroy(),this.detachPlugins()}}y.version=\"4.0.31\",y.Plugins=p;const v=!(\"undefined\"==typeof window||!window.document||!window.document.createElement);let b=null;const x=[\"a[href]\",\"area[href]\",'input:not([disabled]):not([type=\"hidden\"]):not([aria-hidden])',\"select:not([disabled]):not([aria-hidden])\",\"textarea:not([disabled]):not([aria-hidden])\",\"button:not([disabled]):not([aria-hidden])\",\"iframe\",\"object\",\"embed\",\"video\",\"audio\",\"[contenteditable]\",'[tabindex]:not([tabindex^=\"-\"]):not([disabled]):not([aria-hidden])'],w=t=>{if(t&&v){null===b&&document.createElement(\"div\").focus({get preventScroll(){return b=!0,!1}});try{if(t.setActive)t.setActive();else if(b)t.focus({preventScroll:!0});else{const e=window.pageXOffset||document.body.scrollTop,i=window.pageYOffset||document.body.scrollLeft;t.focus(),document.body.scrollTo({top:e,left:i,behavior:\"auto\"})}}catch(t){}}};const $={minSlideCount:2,minScreenHeight:500,autoStart:!0,key:\"t\",Carousel:{},tpl:'
'};class C{constructor(t){this.fancybox=t,this.$container=null,this.state=\"init\";for(const t of[\"onPrepare\",\"onClosing\",\"onKeydown\"])this[t]=this[t].bind(this);this.events={prepare:this.onPrepare,closing:this.onClosing,keydown:this.onKeydown}}onPrepare(){this.getSlides().length=this.fancybox.option(\"Thumbs.minScreenHeight\")&&this.build()}onClosing(){this.Carousel&&this.Carousel.Panzoom.detachEvents()}onKeydown(t,e){e===t.option(\"Thumbs.key\")&&this.toggle()}build(){if(this.$container)return;const t=document.createElement(\"div\");t.classList.add(\"fancybox__thumbs\"),this.fancybox.$carousel.parentNode.insertBefore(t,this.fancybox.$carousel.nextSibling),this.Carousel=new y(t,e(!0,{Dots:!1,Navigation:!1,Sync:{friction:0},infinite:!1,center:!0,fill:!0,dragFree:!0,slidesPerPage:1,preload:1},this.fancybox.option(\"Thumbs.Carousel\"),{Sync:{target:this.fancybox.Carousel},slides:this.getSlides()})),this.Carousel.Panzoom.on(\"wheel\",((t,e)=>{e.preventDefault(),this.fancybox[e.deltaY<0?\"prev\":\"next\"]()})),this.$container=t,this.state=\"visible\"}getSlides(){const t=[];for(const e of this.fancybox.items){const i=e.thumb;i&&t.push({html:this.fancybox.option(\"Thumbs.tpl\").replace(/\\{\\{src\\}\\}/gi,i),customClass:`has-thumb has-${e.type||\"image\"}`})}return t}toggle(){\"visible\"===this.state?this.hide():\"hidden\"===this.state?this.show():this.build()}show(){\"hidden\"===this.state&&(this.$container.style.display=\"\",this.Carousel.Panzoom.attachEvents(),this.state=\"visible\")}hide(){\"visible\"===this.state&&(this.Carousel.Panzoom.detachEvents(),this.$container.style.display=\"none\",this.state=\"hidden\")}cleanup(){this.Carousel&&(this.Carousel.destroy(),this.Carousel=null),this.$container&&(this.$container.remove(),this.$container=null),this.state=\"init\"}attach(){this.fancybox.on(this.events)}detach(){this.fancybox.off(this.events),this.cleanup()}}C.defaults=$;const S=(t,e)=>{const i=new URL(t),s=new URLSearchParams(i.search);let o=new URLSearchParams;for(const[t,i]of[...s,...Object.entries(e)])\"t\"===t?o.set(\"start\",parseInt(i)):o.set(t,i);o=o.toString();let n=t.match(/#t=((.*)?\\d+s)/);return n&&(o+=`#t=${n[1]}`),o},E={video:{autoplay:!0,ratio:16/9},youtube:{autohide:1,fs:1,rel:0,hd:1,wmode:\"transparent\",enablejsapi:1,html5:1},vimeo:{hd:1,show_title:1,show_byline:1,show_portrait:0,fullscreen:1},html5video:{tpl:'',format:\"\"}};class P{constructor(t){this.fancybox=t;for(const t of[\"onInit\",\"onReady\",\"onCreateSlide\",\"onRemoveSlide\",\"onSelectSlide\",\"onUnselectSlide\",\"onRefresh\",\"onMessage\"])this[t]=this[t].bind(this);this.events={init:this.onInit,ready:this.onReady,\"Carousel.createSlide\":this.onCreateSlide,\"Carousel.removeSlide\":this.onRemoveSlide,\"Carousel.selectSlide\":this.onSelectSlide,\"Carousel.unselectSlide\":this.onUnselectSlide,\"Carousel.refresh\":this.onRefresh}}onInit(){for(const t of this.fancybox.items)this.processType(t)}processType(t){if(t.html)return t.src=t.html,t.type=\"html\",void delete t.html;const i=t.src||\"\";let s=t.type||this.fancybox.options.type,o=null;if(!i||\"string\"==typeof i){if(o=i.match(/(?:youtube\\.com|youtu\\.be|youtube\\-nocookie\\.com)\\/(?:watch\\?(?:.*&)?v=|v\\/|u\\/|embed\\/?)?(videoseries\\?list=(?:.*)|[\\w-]{11}|\\?listType=(?:.*)&list=(?:.*))(?:.*)/i)){const e=S(i,this.fancybox.option(\"Html.youtube\")),n=encodeURIComponent(o[1]);t.videoId=n,t.src=`https://www.youtube-nocookie.com/embed/${n}?${e}`,t.thumb=t.thumb||`https://i.ytimg.com/vi/${n}/mqdefault.jpg`,t.vendor=\"youtube\",s=\"video\"}else if(o=i.match(/^.+vimeo.com\\/(?:\\/)?([\\d]+)(.*)?/)){const e=S(i,this.fancybox.option(\"Html.vimeo\")),n=encodeURIComponent(o[1]);t.videoId=n,t.src=`https://player.vimeo.com/video/${n}?${e}`,t.vendor=\"vimeo\",s=\"video\"}else(o=i.match(/(?:maps\\.)?google\\.([a-z]{2,3}(?:\\.[a-z]{2})?)\\/(?:(?:(?:maps\\/(?:place\\/(?:.*)\\/)?\\@(.*),(\\d+.?\\d+?)z))|(?:\\?ll=))(.*)?/i))?(t.src=`//maps.google.${o[1]}/?ll=${(o[2]?o[2]+\"&z=\"+Math.floor(o[3])+(o[4]?o[4].replace(/^\\//,\"&\"):\"\"):o[4]+\"\").replace(/\\?/,\"&\")}&output=${o[4]&&o[4].indexOf(\"layer=c\")>0?\"svembed\":\"embed\"}`,s=\"map\"):(o=i.match(/(?:maps\\.)?google\\.([a-z]{2,3}(?:\\.[a-z]{2})?)\\/(?:maps\\/search\\/)(.*)/i))&&(t.src=`//maps.google.${o[1]}/maps?q=${o[2].replace(\"query=\",\"q=\").replace(\"api=1\",\"\")}&output=embed`,s=\"map\");s||(\"#\"===i.charAt(0)?s=\"inline\":(o=i.match(/\\.(mp4|mov|ogv|webm)((\\?|#).*)?$/i))?(s=\"html5video\",t.format=t.format||\"video/\"+(\"ogv\"===o[1]?\"ogg\":o[1])):i.match(/(^data:image\\/[a-z0-9+\\/=]*,)|(\\.(jp(e|g|eg)|gif|png|bmp|webp|svg|ico)((\\?|#).*)?$)/i)?s=\"image\":i.match(/\\.(pdf)((\\?|#).*)?$/i)&&(s=\"pdf\")),t.type=s||this.fancybox.option(\"defaultType\",\"image\"),\"html5video\"!==s&&\"video\"!==s||(t.video=e({},this.fancybox.option(\"Html.video\"),t.video),t._width&&t._height?t.ratio=parseFloat(t._width)/parseFloat(t._height):t.ratio=t.ratio||t.video.ratio||E.video.ratio)}}onReady(){this.fancybox.Carousel.slides.forEach((t=>{t.$el&&(this.setContent(t),t.index===this.fancybox.getSlide().index&&this.playVideo(t))}))}onCreateSlide(t,e,i){\"ready\"===this.fancybox.state&&this.setContent(i)}loadInlineContent(t){let e;if(t.src instanceof HTMLElement)e=t.src;else if(\"string\"==typeof t.src){const i=t.src.split(\"#\",2),s=2===i.length&&\"\"===i[0]?i[1]:i[0];e=document.getElementById(s)}if(e){if(\"clone\"===t.type||e.$placeHolder){e=e.cloneNode(!0);let i=e.getAttribute(\"id\");i=i?`${i}--clone`:`clone-${this.fancybox.id}-${t.index}`,e.setAttribute(\"id\",i)}else{const t=document.createElement(\"div\");t.classList.add(\"fancybox-placeholder\"),e.parentNode.insertBefore(t,e),e.$placeHolder=t}this.fancybox.setContent(t,e)}else this.fancybox.setError(t,\"{{ELEMENT_NOT_FOUND}}\")}loadAjaxContent(t){const e=this.fancybox,i=new XMLHttpRequest;e.showLoading(t),i.onreadystatechange=function(){i.readyState===XMLHttpRequest.DONE&&\"ready\"===e.state&&(e.hideLoading(t),200===i.status?e.setContent(t,i.responseText):e.setError(t,404===i.status?\"{{AJAX_NOT_FOUND}}\":\"{{AJAX_FORBIDDEN}}\"))};const s=t.ajax||null;i.open(s?\"POST\":\"GET\",t.src),i.setRequestHeader(\"Content-Type\",\"application/x-www-form-urlencoded\"),i.setRequestHeader(\"X-Requested-With\",\"XMLHttpRequest\"),i.send(s),t.xhr=i}loadIframeContent(t){const e=this.fancybox,i=document.createElement(\"iframe\");if(i.className=\"fancybox__iframe\",i.setAttribute(\"id\",`fancybox__iframe_${e.id}_${t.index}`),i.setAttribute(\"allow\",\"autoplay; fullscreen\"),i.setAttribute(\"scrolling\",\"auto\"),t.$iframe=i,\"iframe\"!==t.type||!1===t.preload)return i.setAttribute(\"src\",t.src),this.fancybox.setContent(t,i),void this.resizeIframe(t);e.showLoading(t);const s=document.createElement(\"div\");s.style.visibility=\"hidden\",this.fancybox.setContent(t,s),s.appendChild(i),i.onerror=()=>{e.setError(t,\"{{IFRAME_ERROR}}\")},i.onload=()=>{e.hideLoading(t);let s=!1;i.isReady||(i.isReady=!0,s=!0),i.src.length&&(i.parentNode.style.visibility=\"\",this.resizeIframe(t),s&&e.revealContent(t))},i.setAttribute(\"src\",t.src)}setAspectRatio(t){const e=t.$content,i=t.ratio;if(!e)return;let s=t._width,o=t._height;if(i||s&&o){Object.assign(e.style,{width:s&&o?\"100%\":\"\",height:s&&o?\"100%\":\"\",maxWidth:\"\",maxHeight:\"\"});let t=e.offsetWidth,n=e.offsetHeight;if(s=s||t,o=o||n,s>t||o>n){let e=Math.min(t/s,n/o);s*=e,o*=e}Math.abs(s/o-i)>.01&&(i{t.$el&&(t.$iframe&&this.resizeIframe(t),t.ratio&&this.setAspectRatio(t))}))}setContent(t){if(t&&!t.isDom){switch(t.type){case\"html\":this.fancybox.setContent(t,t.src);break;case\"html5video\":this.fancybox.setContent(t,this.fancybox.option(\"Html.html5video.tpl\").replace(/\\{\\{src\\}\\}/gi,t.src).replace(\"{{format}}\",t.format||t.html5video&&t.html5video.format||\"\").replace(\"{{poster}}\",t.poster||t.thumb||\"\"));break;case\"inline\":case\"clone\":this.loadInlineContent(t);break;case\"ajax\":this.loadAjaxContent(t);break;case\"pdf\":case\"video\":case\"map\":t.preload=!1;case\"iframe\":this.loadIframeContent(t)}t.ratio&&this.setAspectRatio(t)}}onSelectSlide(t,e,i){\"ready\"===t.state&&this.playVideo(i)}playVideo(t){if(\"html5video\"===t.type&&t.video.autoplay)try{const e=t.$el.querySelector(\"video\");if(e){const t=e.play();void 0!==t&&t.then((()=>{})).catch((t=>{e.muted=!0,e.play()}))}}catch(t){}if(\"video\"!==t.type||!t.$iframe||!t.$iframe.contentWindow)return;const e=()=>{if(\"done\"===t.state&&t.$iframe&&t.$iframe.contentWindow){let e;if(t.$iframe.isReady)return t.video&&t.video.autoplay&&(e=\"youtube\"==t.vendor?{event:\"command\",func:\"playVideo\"}:{method:\"play\",value:\"true\"}),void(e&&t.$iframe.contentWindow.postMessage(JSON.stringify(e),\"*\"));\"youtube\"===t.vendor&&(e={event:\"listening\",id:t.$iframe.getAttribute(\"id\")},t.$iframe.contentWindow.postMessage(JSON.stringify(e),\"*\"))}t.poller=setTimeout(e,250)};e()}onUnselectSlide(t,e,i){if(\"html5video\"===i.type){try{i.$el.querySelector(\"video\").pause()}catch(t){}return}let s=!1;\"vimeo\"==i.vendor?s={method:\"pause\",value:\"true\"}:\"youtube\"===i.vendor&&(s={event:\"command\",func:\"pauseVideo\"}),s&&i.$iframe&&i.$iframe.contentWindow&&i.$iframe.contentWindow.postMessage(JSON.stringify(s),\"*\"),clearTimeout(i.poller)}onRemoveSlide(t,e,i){i.xhr&&(i.xhr.abort(),i.xhr=null),i.$iframe&&(i.$iframe.onload=i.$iframe.onerror=null,i.$iframe.src=\"//about:blank\",i.$iframe=null);const s=i.$content;\"inline\"===i.type&&s&&(s.classList.remove(\"fancybox__content\"),\"none\"!==s.style.display&&(s.style.display=\"none\")),i.$closeButton&&(i.$closeButton.remove(),i.$closeButton=null);const o=s&&s.$placeHolder;o&&(o.parentNode.insertBefore(s,o),o.remove(),s.$placeHolder=null)}onMessage(t){try{let e=JSON.parse(t.data);if(\"https://player.vimeo.com\"===t.origin){if(\"ready\"===e.event)for(let e of document.getElementsByClassName(\"fancybox__iframe\"))e.contentWindow===t.source&&(e.isReady=1)}else\"https://www.youtube-nocookie.com\"===t.origin&&\"onReady\"===e.event&&(document.getElementById(e.id).isReady=1)}catch(t){}}attach(){this.fancybox.on(this.events),window.addEventListener(\"message\",this.onMessage,!1)}detach(){this.fancybox.off(this.events),window.removeEventListener(\"message\",this.onMessage,!1)}}P.defaults=E;class T{constructor(t){this.fancybox=t;for(const t of[\"onReady\",\"onClosing\",\"onDone\",\"onPageChange\",\"onCreateSlide\",\"onRemoveSlide\",\"onImageStatusChange\"])this[t]=this[t].bind(this);this.events={ready:this.onReady,closing:this.onClosing,done:this.onDone,\"Carousel.change\":this.onPageChange,\"Carousel.createSlide\":this.onCreateSlide,\"Carousel.removeSlide\":this.onRemoveSlide}}onReady(){this.fancybox.Carousel.slides.forEach((t=>{t.$el&&this.setContent(t)}))}onDone(t,e){this.handleCursor(e)}onClosing(t){clearTimeout(this.clickTimer),this.clickTimer=null,t.Carousel.slides.forEach((t=>{t.$image&&(t.state=\"destroy\"),t.Panzoom&&t.Panzoom.detachEvents()})),\"closing\"===this.fancybox.state&&this.canZoom(t.getSlide())&&this.zoomOut()}onCreateSlide(t,e,i){\"ready\"===this.fancybox.state&&this.setContent(i)}onRemoveSlide(t,e,i){i.$image&&(i.$el.classList.remove(t.option(\"Image.canZoomInClass\")),i.$image.remove(),i.$image=null),i.Panzoom&&(i.Panzoom.destroy(),i.Panzoom=null),i.$el&&i.$el.dataset&&delete i.$el.dataset.imageFit}setContent(t){if(t.isDom||t.html||t.type&&\"image\"!==t.type)return;if(t.$image)return;t.type=\"image\",t.state=\"loading\";const e=document.createElement(\"div\");e.style.visibility=\"hidden\";const i=document.createElement(\"img\");i.addEventListener(\"load\",(e=>{e.stopImmediatePropagation(),this.onImageStatusChange(t)})),i.addEventListener(\"error\",(()=>{this.onImageStatusChange(t)})),i.src=t.src,i.alt=\"\",i.draggable=!1,i.classList.add(\"fancybox__image\"),t.srcset&&i.setAttribute(\"srcset\",t.srcset),t.sizes&&i.setAttribute(\"sizes\",t.sizes),t.$image=i;const s=this.fancybox.option(\"Image.wrap\");if(s){const o=document.createElement(\"div\");o.classList.add(\"string\"==typeof s?s:\"fancybox__image-wrap\"),o.appendChild(i),e.appendChild(o),t.$wrap=o}else e.appendChild(i);t.$el.dataset.imageFit=this.fancybox.option(\"Image.fit\"),this.fancybox.setContent(t,e),i.complete||i.error?this.onImageStatusChange(t):this.fancybox.showLoading(t)}onImageStatusChange(t){const e=t.$image;e&&\"loading\"===t.state&&(e.complete&&e.naturalWidth&&e.naturalHeight?(this.fancybox.hideLoading(t),\"contain\"===this.fancybox.option(\"Image.fit\")&&this.initSlidePanzoom(t),t.$el.addEventListener(\"wheel\",(e=>this.onWheel(t,e)),{passive:!1}),t.$content.addEventListener(\"click\",(e=>this.onClick(t,e)),{passive:!1}),this.revealContent(t)):this.fancybox.setError(t,\"{{IMAGE_ERROR}}\"))}initSlidePanzoom(t){t.Panzoom||(t.Panzoom=new d(t.$el,e(!0,this.fancybox.option(\"Image.Panzoom\",{}),{viewport:t.$wrap,content:t.$image,width:t._width,height:t._height,wrapInner:!1,textSelection:!0,touch:this.fancybox.option(\"Image.touch\"),panOnlyZoomed:!0,click:!1,wheel:!1})),t.Panzoom.on(\"startAnimation\",(()=>{this.fancybox.trigger(\"Image.startAnimation\",t)})),t.Panzoom.on(\"endAnimation\",(()=>{\"zoomIn\"===t.state&&this.fancybox.done(t),this.handleCursor(t),this.fancybox.trigger(\"Image.endAnimation\",t)})),t.Panzoom.on(\"afterUpdate\",(()=>{this.handleCursor(t),this.fancybox.trigger(\"Image.afterUpdate\",t)})))}revealContent(t){null===this.fancybox.Carousel.prevPage&&t.index===this.fancybox.options.startIndex&&this.canZoom(t)?this.zoomIn():this.fancybox.revealContent(t)}getZoomInfo(t){const e=t.$thumb.getBoundingClientRect(),i=e.width,s=e.height,o=t.$content.getBoundingClientRect(),n=o.width,a=o.height,r=o.top-e.top,h=o.left-e.left;let l=this.fancybox.option(\"Image.zoomOpacity\");return\"auto\"===l&&(l=Math.abs(i/s-n/a)>.1),{top:r,left:h,scale:n&&i?i/n:1,opacity:l}}canZoom(t){const e=this.fancybox,i=e.$container;if(window.visualViewport&&1!==window.visualViewport.scale)return!1;if(t.Panzoom&&!t.Panzoom.content.width)return!1;if(!e.option(\"Image.zoom\")||\"contain\"!==e.option(\"Image.fit\"))return!1;const s=t.$thumb;if(!s||\"loading\"===t.state)return!1;i.classList.add(\"fancybox__no-click\");const o=s.getBoundingClientRect();let n;if(this.fancybox.option(\"Image.ignoreCoveredThumbnail\")){const t=document.elementFromPoint(o.left+1,o.top+1)===s,e=document.elementFromPoint(o.right-1,o.bottom-1)===s;n=t&&e}else n=document.elementFromPoint(o.left+.5*o.width,o.top+.5*o.height)===s;return i.classList.remove(\"fancybox__no-click\"),n}zoomIn(){const t=this.fancybox,e=t.getSlide(),i=e.Panzoom,{top:s,left:o,scale:n,opacity:a}=this.getZoomInfo(e);t.trigger(\"reveal\",e),i.panTo({x:-1*o,y:-1*s,scale:n,friction:0,ignoreBounds:!0}),e.$content.style.visibility=\"\",e.state=\"zoomIn\",!0===a&&i.on(\"afterTransform\",(t=>{\"zoomIn\"!==e.state&&\"zoomOut\"!==e.state||(t.$content.style.opacity=Math.min(1,1-(1-t.content.scale)/(1-n)))})),i.panTo({x:0,y:0,scale:1,friction:this.fancybox.option(\"Image.zoomFriction\")})}zoomOut(){const t=this.fancybox,e=t.getSlide(),i=e.Panzoom;if(!i)return;e.state=\"zoomOut\",t.state=\"customClosing\",e.$caption&&(e.$caption.style.visibility=\"hidden\");let s=this.fancybox.option(\"Image.zoomFriction\");const o=t=>{const{top:o,left:n,scale:a,opacity:r}=this.getZoomInfo(e);t||r||(s*=.82),i.panTo({x:-1*n,y:-1*o,scale:a,friction:s,ignoreBounds:!0}),s*=.98};window.addEventListener(\"scroll\",o),i.once(\"endAnimation\",(()=>{window.removeEventListener(\"scroll\",o),t.destroy()})),o()}handleCursor(t){if(\"image\"!==t.type||!t.$el)return;const e=t.Panzoom,i=this.fancybox.option(\"Image.click\",!1,t),s=this.fancybox.option(\"Image.touch\"),o=t.$el.classList,n=this.fancybox.option(\"Image.canZoomInClass\"),a=this.fancybox.option(\"Image.canZoomOutClass\");if(o.remove(a),o.remove(n),e&&\"toggleZoom\"===i){e&&1===e.content.scale&&e.option(\"maxScale\")-e.content.scale>.01?o.add(n):e.content.scale>1&&!s&&o.add(a)}else\"close\"===i&&o.add(a)}onWheel(t,e){if(\"ready\"===this.fancybox.state&&!1!==this.fancybox.trigger(\"Image.wheel\",e))switch(this.fancybox.option(\"Image.wheel\")){case\"zoom\":\"done\"===t.state&&t.Panzoom&&t.Panzoom.zoomWithWheel(e);break;case\"close\":this.fancybox.close();break;case\"slide\":this.fancybox[e.deltaY<0?\"prev\":\"next\"]()}}onClick(t,e){if(\"ready\"!==this.fancybox.state)return;const i=t.Panzoom;if(i&&(i.dragPosition.midPoint||0!==i.dragOffset.x||0!==i.dragOffset.y||1!==i.dragOffset.scale))return;if(this.fancybox.Carousel.Panzoom.lockAxis)return!1;const s=i=>{switch(i){case\"toggleZoom\":e.stopPropagation(),t.Panzoom&&t.Panzoom.zoomWithClick(e);break;case\"close\":this.fancybox.close();break;case\"next\":e.stopPropagation(),this.fancybox.next()}},o=this.fancybox.option(\"Image.click\"),n=this.fancybox.option(\"Image.doubleClick\");n?this.clickTimer?(clearTimeout(this.clickTimer),this.clickTimer=null,s(n)):this.clickTimer=setTimeout((()=>{this.clickTimer=null,s(o)}),300):s(o)}onPageChange(t,e){const i=t.getSlide();e.slides.forEach((t=>{t.Panzoom&&\"done\"===t.state&&t.index!==i.index&&t.Panzoom.panTo({x:0,y:0,scale:1,friction:.8})}))}attach(){this.fancybox.on(this.events)}detach(){this.fancybox.off(this.events)}}T.defaults={canZoomInClass:\"can-zoom_in\",canZoomOutClass:\"can-zoom_out\",zoom:!0,zoomOpacity:\"auto\",zoomFriction:.82,ignoreCoveredThumbnail:!1,touch:!0,click:\"toggleZoom\",doubleClick:null,wheel:\"zoom\",fit:\"contain\",wrap:!1,Panzoom:{ratio:1}};class L{constructor(t){this.fancybox=t;for(const t of[\"onChange\",\"onClosing\"])this[t]=this[t].bind(this);this.events={initCarousel:this.onChange,\"Carousel.change\":this.onChange,closing:this.onClosing},this.hasCreatedHistory=!1,this.origHash=\"\",this.timer=null}onChange(t){const e=t.Carousel;this.timer&&clearTimeout(this.timer);const i=null===e.prevPage,s=t.getSlide(),o=new URL(document.URL).hash;let n=!1;if(s.slug)n=\"#\"+s.slug;else{const i=s.$trigger&&s.$trigger.dataset,o=t.option(\"slug\")||i&&i.fancybox;o&&o.length&&\"true\"!==o&&(n=\"#\"+o+(e.slides.length>1?\"-\"+(s.index+1):\"\"))}i&&(this.origHash=o!==n?o:\"\"),n&&o!==n&&(this.timer=setTimeout((()=>{try{window.history[i?\"pushState\":\"replaceState\"]({},document.title,window.location.pathname+window.location.search+n),i&&(this.hasCreatedHistory=!0)}catch(t){}}),300))}onClosing(){if(this.timer&&clearTimeout(this.timer),!0!==this.hasSilentClose)try{return void window.history.replaceState({},document.title,window.location.pathname+window.location.search+(this.origHash||\"\"))}catch(t){}}attach(t){t.on(this.events)}detach(t){t.off(this.events)}static startFromUrl(){const t=L.Fancybox;if(!t||t.getInstance()||!1===t.defaults.Hash)return;const{hash:e,slug:i,index:s}=L.getParsedURL();if(!i)return;let o=document.querySelector(`[data-slug=\"${e}\"]`);if(o&&o.dispatchEvent(new CustomEvent(\"click\",{bubbles:!0,cancelable:!0})),t.getInstance())return;const n=document.querySelectorAll(`[data-fancybox=\"${i}\"]`);n.length&&(null===s&&1===n.length?o=n[0]:s&&(o=n[s-1]),o&&o.dispatchEvent(new CustomEvent(\"click\",{bubbles:!0,cancelable:!0})))}static onHashChange(){const{slug:t,index:e}=L.getParsedURL(),i=L.Fancybox,s=i&&i.getInstance();if(s&&s.plugins.Hash){if(t){const i=s.Carousel;if(t===s.option(\"slug\"))return i.slideTo(e-1);for(let e of i.slides)if(e.slug&&e.slug===t)return i.slideTo(e.index);const o=s.getSlide(),n=o.$trigger&&o.$trigger.dataset;if(n&&n.fancybox===t)return i.slideTo(e-1)}s.plugins.Hash.hasSilentClose=!0,s.close()}L.startFromUrl()}static create(t){function e(){window.addEventListener(\"hashchange\",L.onHashChange,!1),L.startFromUrl()}L.Fancybox=t,v&&window.requestAnimationFrame((()=>{/complete|interactive|loaded/.test(document.readyState)?e():document.addEventListener(\"DOMContentLoaded\",e)}))}static destroy(){window.removeEventListener(\"hashchange\",L.onHashChange,!1)}static getParsedURL(){const t=window.location.hash.substr(1),e=t.split(\"-\"),i=e.length>1&&/^\\+?\\d+$/.test(e[e.length-1])&&parseInt(e.pop(-1),10)||null;return{hash:t,slug:e.join(\"-\"),index:i}}}const _={pageXOffset:0,pageYOffset:0,element:()=>document.fullscreenElement||document.mozFullScreenElement||document.webkitFullscreenElement,activate(t){_.pageXOffset=window.pageXOffset,_.pageYOffset=window.pageYOffset,t.requestFullscreen?t.requestFullscreen():t.mozRequestFullScreen?t.mozRequestFullScreen():t.webkitRequestFullscreen?t.webkitRequestFullscreen():t.msRequestFullscreen&&t.msRequestFullscreen()},deactivate(){document.exitFullscreen?document.exitFullscreen():document.mozCancelFullScreen?document.mozCancelFullScreen():document.webkitExitFullscreen&&document.webkitExitFullscreen()}};class A{constructor(t){this.fancybox=t,this.active=!1,this.handleVisibilityChange=this.handleVisibilityChange.bind(this)}isActive(){return this.active}setTimer(){if(!this.active||this.timer)return;const t=this.fancybox.option(\"slideshow.delay\",3e3);this.timer=setTimeout((()=>{this.timer=null,this.fancybox.option(\"infinite\")||this.fancybox.getSlide().index!==this.fancybox.Carousel.slides.length-1?this.fancybox.next():this.fancybox.jumpTo(0,{friction:0})}),t);let e=this.$progress;e||(e=document.createElement(\"div\"),e.classList.add(\"fancybox__progress\"),this.fancybox.$carousel.parentNode.insertBefore(e,this.fancybox.$carousel),this.$progress=e,e.offsetHeight),e.style.transitionDuration=`${t}ms`,e.style.transform=\"scaleX(1)\"}clearTimer(){clearTimeout(this.timer),this.timer=null,this.$progress&&(this.$progress.style.transitionDuration=\"\",this.$progress.style.transform=\"\",this.$progress.offsetHeight)}activate(){this.active||(this.active=!0,this.fancybox.$container.classList.add(\"has-slideshow\"),\"done\"===this.fancybox.getSlide().state&&this.setTimer(),document.addEventListener(\"visibilitychange\",this.handleVisibilityChange,!1))}handleVisibilityChange(){this.deactivate()}deactivate(){this.active=!1,this.clearTimer(),this.fancybox.$container.classList.remove(\"has-slideshow\"),document.removeEventListener(\"visibilitychange\",this.handleVisibilityChange,!1)}toggle(){this.active?this.deactivate():this.fancybox.Carousel.slides.length>1&&this.activate()}}const z={display:[\"counter\",\"zoom\",\"slideshow\",\"fullscreen\",\"thumbs\",\"close\"],autoEnable:!0,items:{counter:{position:\"left\",type:\"div\",class:\"fancybox__counter\",html:' / ',attr:{tabindex:-1}},prev:{type:\"button\",class:\"fancybox__button--prev\",label:\"PREV\",html:'',attr:{\"data-fancybox-prev\":\"\"}},next:{type:\"button\",class:\"fancybox__button--next\",label:\"NEXT\",html:'',attr:{\"data-fancybox-next\":\"\"}},fullscreen:{type:\"button\",class:\"fancybox__button--fullscreen\",label:\"TOGGLE_FULLSCREEN\",html:'\\n \\n \\n ',click:function(t){t.preventDefault(),_.element()?_.deactivate():_.activate(this.fancybox.$container)}},slideshow:{type:\"button\",class:\"fancybox__button--slideshow\",label:\"TOGGLE_SLIDESHOW\",html:'\\n \\n \\n ',click:function(t){t.preventDefault(),this.Slideshow.toggle()}},zoom:{type:\"button\",class:\"fancybox__button--zoom\",label:\"TOGGLE_ZOOM\",html:'',click:function(t){t.preventDefault();const e=this.fancybox.getSlide().Panzoom;e&&e.toggleZoom()}},download:{type:\"link\",label:\"DOWNLOAD\",class:\"fancybox__button--download\",html:'',click:function(t){t.stopPropagation()}},thumbs:{type:\"button\",label:\"TOGGLE_THUMBS\",class:\"fancybox__button--thumbs\",html:'',click:function(t){t.stopPropagation();const e=this.fancybox.plugins.Thumbs;e&&e.toggle()}},close:{type:\"button\",label:\"CLOSE\",class:\"fancybox__button--close\",html:'',attr:{\"data-fancybox-close\":\"\",tabindex:0}}}};class k{constructor(t){this.fancybox=t,this.$container=null,this.state=\"init\";for(const t of[\"onInit\",\"onPrepare\",\"onDone\",\"onKeydown\",\"onClosing\",\"onChange\",\"onSettle\",\"onRefresh\"])this[t]=this[t].bind(this);this.events={init:this.onInit,prepare:this.onPrepare,done:this.onDone,keydown:this.onKeydown,closing:this.onClosing,\"Carousel.change\":this.onChange,\"Carousel.settle\":this.onSettle,\"Carousel.Panzoom.touchStart\":()=>this.onRefresh(),\"Image.startAnimation\":(t,e)=>this.onRefresh(e),\"Image.afterUpdate\":(t,e)=>this.onRefresh(e)}}onInit(){if(this.fancybox.option(\"Toolbar.autoEnable\")){let t=!1;for(const e of this.fancybox.items)if(\"image\"===e.type){t=!0;break}if(!t)return void(this.state=\"disabled\")}for(const e of this.fancybox.option(\"Toolbar.display\")){if(\"close\"===(t(e)?e.id:e)){this.fancybox.options.closeButton=!1;break}}}onPrepare(){const t=this.fancybox;if(\"init\"===this.state&&(this.build(),this.update(),this.Slideshow=new A(t),!t.Carousel.prevPage&&(t.option(\"slideshow.autoStart\")&&this.Slideshow.activate(),t.option(\"fullscreen.autoStart\")&&!_.element())))try{_.activate(t.$container)}catch(t){}}onFsChange(){window.scrollTo(_.pageXOffset,_.pageYOffset)}onSettle(){const t=this.fancybox,e=this.Slideshow;e&&e.isActive()&&(t.getSlide().index!==t.Carousel.slides.length-1||t.option(\"infinite\")?\"done\"===t.getSlide().state&&e.setTimer():e.deactivate())}onChange(){this.update(),this.Slideshow&&this.Slideshow.isActive()&&this.Slideshow.clearTimer()}onDone(t,e){const i=this.Slideshow;e.index===t.getSlide().index&&(this.update(),i&&i.isActive()&&(t.option(\"infinite\")||e.index!==t.Carousel.slides.length-1?i.setTimer():i.deactivate()))}onRefresh(t){t&&t.index!==this.fancybox.getSlide().index||(this.update(),!this.Slideshow||!this.Slideshow.isActive()||t&&\"done\"!==t.state||this.Slideshow.deactivate())}onKeydown(t,e,i){\" \"===e&&this.Slideshow&&(this.Slideshow.toggle(),i.preventDefault())}onClosing(){this.Slideshow&&this.Slideshow.deactivate(),document.removeEventListener(\"fullscreenchange\",this.onFsChange)}createElement(t){let e;\"div\"===t.type?e=document.createElement(\"div\"):(e=document.createElement(\"link\"===t.type?\"a\":\"button\"),e.classList.add(\"carousel__button\")),e.innerHTML=t.html,e.setAttribute(\"tabindex\",t.tabindex||0),t.class&&e.classList.add(...t.class.split(\" \"));for(const i in t.attr)e.setAttribute(i,t.attr[i]);t.label&&e.setAttribute(\"title\",this.fancybox.localize(`{{${t.label}}}`)),t.click&&e.addEventListener(\"click\",t.click.bind(this)),\"prev\"===t.id&&e.setAttribute(\"data-fancybox-prev\",\"\"),\"next\"===t.id&&e.setAttribute(\"data-fancybox-next\",\"\");const i=e.querySelector(\"svg\");return i&&(i.setAttribute(\"role\",\"img\"),i.setAttribute(\"tabindex\",\"-1\"),i.setAttribute(\"xmlns\",\"http://www.w3.org/2000/svg\")),e}build(){this.cleanup();const i=this.fancybox.option(\"Toolbar.items\"),s=[{position:\"left\",items:[]},{position:\"center\",items:[]},{position:\"right\",items:[]}],o=this.fancybox.plugins.Thumbs;for(const n of this.fancybox.option(\"Toolbar.display\")){let a,r;if(t(n)?(a=n.id,r=e({},i[a],n)):(a=n,r=i[a]),[\"counter\",\"next\",\"prev\",\"slideshow\"].includes(a)&&this.fancybox.items.length<2)continue;if(\"fullscreen\"===a){if(!document.fullscreenEnabled||window.fullScreen)continue;document.addEventListener(\"fullscreenchange\",this.onFsChange)}if(\"thumbs\"===a&&(!o||\"disabled\"===o.state))continue;if(!r)continue;let h=r.position||\"right\",l=s.find((t=>t.position===h));l&&l.items.push(r)}const n=document.createElement(\"div\");n.classList.add(\"fancybox__toolbar\");for(const t of s)if(t.items.length){const e=document.createElement(\"div\");e.classList.add(\"fancybox__toolbar__items\"),e.classList.add(`fancybox__toolbar__items--${t.position}`);for(const i of t.items)e.appendChild(this.createElement(i));n.appendChild(e)}this.fancybox.$carousel.parentNode.insertBefore(n,this.fancybox.$carousel),this.$container=n}update(){const t=this.fancybox.getSlide(),e=t.index,i=this.fancybox.items.length,s=t.downloadSrc||(\"image\"!==t.type||t.error?null:t.src);for(const t of this.fancybox.$container.querySelectorAll(\"a.fancybox__button--download\"))s?(t.removeAttribute(\"disabled\"),t.removeAttribute(\"tabindex\"),t.setAttribute(\"href\",s),t.setAttribute(\"download\",s),t.setAttribute(\"target\",\"_blank\")):(t.setAttribute(\"disabled\",\"\"),t.setAttribute(\"tabindex\",-1),t.removeAttribute(\"href\"),t.removeAttribute(\"download\"));const o=t.Panzoom,n=o&&o.option(\"maxScale\")>o.option(\"baseScale\");for(const t of this.fancybox.$container.querySelectorAll(\".fancybox__button--zoom\"))n?t.removeAttribute(\"disabled\"):t.setAttribute(\"disabled\",\"\");for(const e of this.fancybox.$container.querySelectorAll(\"[data-fancybox-index]\"))e.innerHTML=t.index+1;for(const t of this.fancybox.$container.querySelectorAll(\"[data-fancybox-count]\"))t.innerHTML=i;if(!this.fancybox.option(\"infinite\")){for(const t of this.fancybox.$container.querySelectorAll(\"[data-fancybox-prev]\"))0===e?t.setAttribute(\"disabled\",\"\"):t.removeAttribute(\"disabled\");for(const t of this.fancybox.$container.querySelectorAll(\"[data-fancybox-next]\"))e===i-1?t.setAttribute(\"disabled\",\"\"):t.removeAttribute(\"disabled\")}}cleanup(){this.Slideshow&&this.Slideshow.isActive()&&this.Slideshow.clearTimer(),this.$container&&this.$container.remove(),this.$container=null}attach(){this.fancybox.on(this.events)}detach(){this.fancybox.off(this.events),this.cleanup()}}k.defaults=z;const O={ScrollLock:class{constructor(t){this.fancybox=t,this.viewport=null,this.pendingUpdate=null;for(const t of[\"onReady\",\"onResize\",\"onTouchstart\",\"onTouchmove\"])this[t]=this[t].bind(this)}onReady(){const t=window.visualViewport;t&&(this.viewport=t,this.startY=0,t.addEventListener(\"resize\",this.onResize),this.updateViewport()),window.addEventListener(\"touchstart\",this.onTouchstart,{passive:!1}),window.addEventListener(\"touchmove\",this.onTouchmove,{passive:!1}),window.addEventListener(\"wheel\",this.onWheel,{passive:!1})}onResize(){this.updateViewport()}updateViewport(){const t=this.fancybox,e=this.viewport,i=e.scale||1,s=t.$container;if(!s)return;let o=\"\",n=\"\",a=\"\";i-1>.1&&(o=e.width*i+\"px\",n=e.height*i+\"px\",a=`translate3d(${e.offsetLeft}px, ${e.offsetTop}px, 0) scale(${1/i})`),s.style.width=o,s.style.height=n,s.style.transform=a}onTouchstart(t){this.startY=t.touches?t.touches[0].screenY:t.screenY}onTouchmove(t){const e=this.startY,i=window.innerWidth/window.document.documentElement.clientWidth;if(!t.cancelable)return;if(t.touches.length>1||1!==i)return;const o=s(t.composedPath()[0]);if(!o)return void t.preventDefault();const n=window.getComputedStyle(o),a=parseInt(n.getPropertyValue(\"height\"),10),r=t.touches?t.touches[0].screenY:t.screenY,h=e<=r&&0===o.scrollTop,l=e>=r&&o.scrollHeight-o.scrollTop===a;(h||l)&&t.preventDefault()}onWheel(t){s(t.composedPath()[0])||t.preventDefault()}cleanup(){this.pendingUpdate&&(cancelAnimationFrame(this.pendingUpdate),this.pendingUpdate=null);const t=this.viewport;t&&(t.removeEventListener(\"resize\",this.onResize),this.viewport=null),window.removeEventListener(\"touchstart\",this.onTouchstart,!1),window.removeEventListener(\"touchmove\",this.onTouchmove,!1),window.removeEventListener(\"wheel\",this.onWheel,{passive:!1})}attach(){this.fancybox.on(\"initLayout\",this.onReady)}detach(){this.fancybox.off(\"initLayout\",this.onReady),this.cleanup()}},Thumbs:C,Html:P,Toolbar:k,Image:T,Hash:L};const M={startIndex:0,preload:1,infinite:!0,showClass:\"fancybox-zoomInUp\",hideClass:\"fancybox-fadeOut\",animated:!0,hideScrollbar:!0,parentEl:null,mainClass:null,autoFocus:!0,trapFocus:!0,placeFocusBack:!0,click:\"close\",closeButton:\"inside\",dragToClose:!0,keyboard:{Escape:\"close\",Delete:\"close\",Backspace:\"close\",PageUp:\"next\",PageDown:\"prev\",ArrowUp:\"next\",ArrowDown:\"prev\",ArrowRight:\"next\",ArrowLeft:\"prev\"},template:{closeButton:'',spinner:'',main:null},l10n:{CLOSE:\"Close\",NEXT:\"Next\",PREV:\"Previous\",MODAL:\"You can close this modal content with the ESC key\",ERROR:\"Something Went Wrong, Please Try Again Later\",IMAGE_ERROR:\"Image Not Found\",ELEMENT_NOT_FOUND:\"HTML Element Not Found\",AJAX_NOT_FOUND:\"Error Loading AJAX : Not Found\",AJAX_FORBIDDEN:\"Error Loading AJAX : Forbidden\",IFRAME_ERROR:\"Error Loading Page\",TOGGLE_ZOOM:\"Toggle zoom level\",TOGGLE_THUMBS:\"Toggle thumbnails\",TOGGLE_SLIDESHOW:\"Toggle slideshow\",TOGGLE_FULLSCREEN:\"Toggle full-screen mode\",DOWNLOAD:\"Download\"}},I=new Map;let F=0;class R extends l{constructor(t,i={}){t=t.map((t=>(t.width&&(t._width=t.width),t.height&&(t._height=t.height),t))),super(e(!0,{},M,i)),this.bindHandlers(),this.state=\"init\",this.setItems(t),this.attachPlugins(R.Plugins),this.trigger(\"init\"),!0===this.option(\"hideScrollbar\")&&this.hideScrollbar(),this.initLayout(),this.initCarousel(),this.attachEvents(),I.set(this.id,this),this.trigger(\"prepare\"),this.state=\"ready\",this.trigger(\"ready\"),this.$container.setAttribute(\"aria-hidden\",\"false\"),this.option(\"trapFocus\")&&this.focus()}option(t,...e){const i=this.getSlide();let s=i?i[t]:void 0;return void 0!==s?(\"function\"==typeof s&&(s=s.call(this,this,...e)),s):super.option(t,...e)}bindHandlers(){for(const t of[\"onMousedown\",\"onKeydown\",\"onClick\",\"onFocus\",\"onCreateSlide\",\"onSettle\",\"onTouchMove\",\"onTouchEnd\",\"onTransform\"])this[t]=this[t].bind(this)}attachEvents(){document.addEventListener(\"mousedown\",this.onMousedown),document.addEventListener(\"keydown\",this.onKeydown,!0),this.option(\"trapFocus\")&&document.addEventListener(\"focus\",this.onFocus,!0),this.$container.addEventListener(\"click\",this.onClick)}detachEvents(){document.removeEventListener(\"mousedown\",this.onMousedown),document.removeEventListener(\"keydown\",this.onKeydown,!0),document.removeEventListener(\"focus\",this.onFocus,!0),this.$container.removeEventListener(\"click\",this.onClick)}initLayout(){this.$root=this.option(\"parentEl\")||document.body;let t=this.option(\"template.main\");t&&(this.$root.insertAdjacentHTML(\"beforeend\",this.localize(t)),this.$container=this.$root.querySelector(\".fancybox__container\")),this.$container||(this.$container=document.createElement(\"div\"),this.$root.appendChild(this.$container)),this.$container.onscroll=()=>(this.$container.scrollLeft=0,!1),Object.entries({class:\"fancybox__container\",role:\"dialog\",tabIndex:\"-1\",\"aria-modal\":\"true\",\"aria-hidden\":\"true\",\"aria-label\":this.localize(\"{{MODAL}}\")}).forEach((t=>this.$container.setAttribute(...t))),this.option(\"animated\")&&this.$container.classList.add(\"is-animated\"),this.$backdrop=this.$container.querySelector(\".fancybox__backdrop\"),this.$backdrop||(this.$backdrop=document.createElement(\"div\"),this.$backdrop.classList.add(\"fancybox__backdrop\"),this.$container.appendChild(this.$backdrop)),this.$carousel=this.$container.querySelector(\".fancybox__carousel\"),this.$carousel||(this.$carousel=document.createElement(\"div\"),this.$carousel.classList.add(\"fancybox__carousel\"),this.$container.appendChild(this.$carousel)),this.$container.Fancybox=this,this.id=this.$container.getAttribute(\"id\"),this.id||(this.id=this.options.id||++F,this.$container.setAttribute(\"id\",\"fancybox-\"+this.id));const e=this.option(\"mainClass\");return e&&this.$container.classList.add(...e.split(\" \")),document.documentElement.classList.add(\"with-fancybox\"),this.trigger(\"initLayout\"),this}setItems(t){const e=[];for(const i of t){const t=i.$trigger;if(t){const e=t.dataset||{};i.src=e.src||t.getAttribute(\"href\")||i.src,i.type=e.type||i.type,!i.src&&t instanceof HTMLImageElement&&(i.src=t.currentSrc||i.$trigger.src)}let s=i.$thumb;if(!s){let t=i.$trigger&&i.$trigger.origTarget;t&&(s=t instanceof HTMLImageElement?t:t.querySelector(\"img:not([aria-hidden])\")),!s&&i.$trigger&&(s=i.$trigger instanceof HTMLImageElement?i.$trigger:i.$trigger.querySelector(\"img:not([aria-hidden])\"))}i.$thumb=s||null;let o=i.thumb;!o&&s&&(o=s.currentSrc||s.src,!o&&s.dataset&&(o=s.dataset.lazySrc||s.dataset.src)),o||\"image\"!==i.type||(o=i.src),i.thumb=o||null,i.caption=i.caption||\"\",e.push(i)}this.items=e}initCarousel(){return this.Carousel=new y(this.$carousel,e(!0,{},{prefix:\"\",classNames:{viewport:\"fancybox__viewport\",track:\"fancybox__track\",slide:\"fancybox__slide\"},textSelection:!0,preload:this.option(\"preload\"),friction:.88,slides:this.items,initialPage:this.options.startIndex,slidesPerPage:1,infiniteX:this.option(\"infinite\"),infiniteY:!0,l10n:this.option(\"l10n\"),Dots:!1,Navigation:{classNames:{main:\"fancybox__nav\",button:\"carousel__button\",next:\"is-next\",prev:\"is-prev\"}},Panzoom:{textSelection:!0,panOnlyZoomed:()=>this.Carousel&&this.Carousel.pages&&this.Carousel.pages.length<2&&!this.option(\"dragToClose\"),lockAxis:()=>{if(this.Carousel){let t=\"x\";return this.option(\"dragToClose\")&&(t+=\"y\"),t}}},on:{\"*\":(t,...e)=>this.trigger(`Carousel.${t}`,...e),init:t=>this.Carousel=t,createSlide:this.onCreateSlide,settle:this.onSettle}},this.option(\"Carousel\"))),this.option(\"dragToClose\")&&this.Carousel.Panzoom.on({touchMove:this.onTouchMove,afterTransform:this.onTransform,touchEnd:this.onTouchEnd}),this.trigger(\"initCarousel\"),this}onCreateSlide(t,e){let i=e.caption||\"\";if(\"function\"==typeof this.options.caption&&(i=this.options.caption.call(this,this,this.Carousel,e)),\"string\"==typeof i&&i.length){const t=document.createElement(\"div\"),s=`fancybox__caption_${this.id}_${e.index}`;t.className=\"fancybox__caption\",t.innerHTML=i,t.setAttribute(\"id\",s),e.$caption=e.$el.appendChild(t),e.$el.classList.add(\"has-caption\"),e.$el.setAttribute(\"aria-labelledby\",s)}}onSettle(){this.option(\"autoFocus\")&&this.focus()}onFocus(t){this.isTopmost()&&this.focus(t)}onClick(t){if(t.defaultPrevented)return;let e=t.composedPath()[0];if(e.matches(\"[data-fancybox-close]\"))return t.preventDefault(),void R.close(!1,t);if(e.matches(\"[data-fancybox-next]\"))return t.preventDefault(),void R.next();if(e.matches(\"[data-fancybox-prev]\"))return t.preventDefault(),void R.prev();const i=document.activeElement;if(i){if(i.closest(\"[contenteditable]\"))return;e.matches(x)||i.blur()}if(e.closest(\".fancybox__content\"))return;if(getSelection().toString().length)return;if(!1===this.trigger(\"click\",t))return;switch(this.option(\"click\")){case\"close\":this.close();break;case\"next\":this.next()}}onTouchMove(){const t=this.getSlide().Panzoom;return!t||1===t.content.scale}onTouchEnd(t){const e=t.dragOffset.y;Math.abs(e)>=150||Math.abs(e)>=35&&t.dragOffset.time<350?(this.option(\"hideClass\")&&(this.getSlide().hideClass=\"fancybox-throwOut\"+(t.content.y<0?\"Up\":\"Down\")),this.close()):\"y\"===t.lockAxis&&t.panTo({y:0})}onTransform(t){if(this.$backdrop){const e=Math.abs(t.content.y),i=e<1?\"\":Math.max(.33,Math.min(1,1-e/t.content.fitHeight*1.5));this.$container.style.setProperty(\"--fancybox-ts\",i?\"0s\":\"\"),this.$container.style.setProperty(\"--fancybox-opacity\",i)}}onMousedown(){\"ready\"===this.state&&document.body.classList.add(\"is-using-mouse\")}onKeydown(t){if(!this.isTopmost())return;document.body.classList.remove(\"is-using-mouse\");const e=t.key,i=this.option(\"keyboard\");if(!i||t.ctrlKey||t.altKey||t.shiftKey)return;const s=t.composedPath()[0],o=document.activeElement&&document.activeElement.classList,n=o&&o.contains(\"carousel__button\");if(\"Escape\"!==e&&!n){if(t.target.isContentEditable||-1!==[\"BUTTON\",\"TEXTAREA\",\"OPTION\",\"INPUT\",\"SELECT\",\"VIDEO\"].indexOf(s.nodeName))return}if(!1===this.trigger(\"keydown\",e,t))return;const a=i[e];\"function\"==typeof this[a]&&this[a]()}getSlide(){const t=this.Carousel;if(!t)return null;const e=null===t.page?t.option(\"initialPage\"):t.page,i=t.pages||[];return i.length&&i[e]?i[e].slides[0]:null}focus(t){if(R.ignoreFocusChange)return;if([\"init\",\"closing\",\"customClosing\",\"destroy\"].indexOf(this.state)>-1)return;const e=this.$container,i=this.getSlide(),s=\"done\"===i.state?i.$el:null;if(s&&s.contains(document.activeElement))return;t&&t.preventDefault(),R.ignoreFocusChange=!0;const o=Array.from(e.querySelectorAll(x));let n,a=[];for(let t of o){const e=t.offsetParent,i=s&&s.contains(t),o=!this.Carousel.$viewport.contains(t);e&&(i||o)?(a.push(t),void 0!==t.dataset.origTabindex&&(t.tabIndex=t.dataset.origTabindex,t.removeAttribute(\"data-orig-tabindex\")),(t.hasAttribute(\"autoFocus\")||!n&&i&&!t.classList.contains(\"carousel__button\"))&&(n=t)):(t.dataset.origTabindex=void 0===t.dataset.origTabindex?t.getAttribute(\"tabindex\"):t.dataset.origTabindex,t.tabIndex=-1)}t?a.indexOf(t.target)>-1?this.lastFocus=t.target:this.lastFocus===e?w(a[a.length-1]):w(e):this.option(\"autoFocus\")&&n?w(n):a.indexOf(document.activeElement)<0&&w(e),this.lastFocus=document.activeElement,R.ignoreFocusChange=!1}hideScrollbar(){if(!v)return;const t=window.innerWidth-document.documentElement.getBoundingClientRect().width,e=\"fancybox-style-noscroll\";let i=document.getElementById(e);i||t>0&&(i=document.createElement(\"style\"),i.id=e,i.type=\"text/css\",i.innerHTML=`.compensate-for-scrollbar {padding-right: ${t}px;}`,document.getElementsByTagName(\"head\")[0].appendChild(i),document.body.classList.add(\"compensate-for-scrollbar\"))}revealScrollbar(){document.body.classList.remove(\"compensate-for-scrollbar\");const t=document.getElementById(\"fancybox-style-noscroll\");t&&t.remove()}clearContent(t){this.Carousel.trigger(\"removeSlide\",t),t.$content&&(t.$content.remove(),t.$content=null),t.$closeButton&&(t.$closeButton.remove(),t.$closeButton=null),t._className&&t.$el.classList.remove(t._className)}setContent(t,e,i={}){let s;const o=t.$el;if(e instanceof HTMLElement)[\"img\",\"iframe\",\"video\",\"audio\"].indexOf(e.nodeName.toLowerCase())>-1?(s=document.createElement(\"div\"),s.appendChild(e)):s=e;else{const t=document.createRange().createContextualFragment(e);s=document.createElement(\"div\"),s.appendChild(t)}if(t.filter&&!t.error&&(s=s.querySelector(t.filter)),s instanceof Element)return t._className=`has-${i.suffix||t.type||\"unknown\"}`,o.classList.add(t._className),s.classList.add(\"fancybox__content\"),\"none\"!==s.style.display&&\"none\"!==getComputedStyle(s).getPropertyValue(\"display\")||(s.style.display=t.display||this.option(\"defaultDisplay\")||\"flex\"),t.id&&s.setAttribute(\"id\",t.id),t.$content=s,o.prepend(s),this.manageCloseButton(t),\"loading\"!==t.state&&this.revealContent(t),s;this.setError(t,\"{{ELEMENT_NOT_FOUND}}\")}manageCloseButton(t){const e=void 0===t.closeButton?this.option(\"closeButton\"):t.closeButton;if(!e||\"top\"===e&&this.$closeButton)return;const i=document.createElement(\"button\");i.classList.add(\"carousel__button\",\"is-close\"),i.setAttribute(\"title\",this.options.l10n.CLOSE),i.innerHTML=this.option(\"template.closeButton\"),i.addEventListener(\"click\",(t=>this.close(t))),\"inside\"===e?(t.$closeButton&&t.$closeButton.remove(),t.$closeButton=t.$content.appendChild(i)):this.$closeButton=this.$container.insertBefore(i,this.$container.firstChild)}revealContent(t){this.trigger(\"reveal\",t),t.$content.style.visibility=\"\";let e=!1;t.error||\"loading\"===t.state||null!==this.Carousel.prevPage||t.index!==this.options.startIndex||(e=void 0===t.showClass?this.option(\"showClass\"):t.showClass),e?(t.state=\"animating\",this.animateCSS(t.$content,e,(()=>{this.done(t)}))):this.done(t)}animateCSS(t,e,i){if(t&&t.dispatchEvent(new CustomEvent(\"animationend\",{bubbles:!0,cancelable:!0})),!t||!e)return void(\"function\"==typeof i&&i());const s=function(o){o.currentTarget===this&&(t.removeEventListener(\"animationend\",s),i&&i(),t.classList.remove(e))};t.addEventListener(\"animationend\",s),t.classList.add(e)}done(t){t.state=\"done\",this.trigger(\"done\",t);const e=this.getSlide();e&&t.index===e.index&&this.option(\"autoFocus\")&&this.focus()}setError(t,e){t.error=e,this.hideLoading(t),this.clearContent(t);const i=document.createElement(\"div\");i.classList.add(\"fancybox-error\"),i.innerHTML=this.localize(e||\"

{{ERROR}}

\"),this.setContent(t,i,{suffix:\"error\"})}showLoading(t){t.state=\"loading\",t.$el.classList.add(\"is-loading\");let e=t.$el.querySelector(\".fancybox__spinner\");e||(e=document.createElement(\"div\"),e.classList.add(\"fancybox__spinner\"),e.innerHTML=this.option(\"template.spinner\"),e.addEventListener(\"click\",(()=>{this.Carousel.Panzoom.velocity||this.close()})),t.$el.prepend(e))}hideLoading(t){const e=t.$el&&t.$el.querySelector(\".fancybox__spinner\");e&&(e.remove(),t.$el.classList.remove(\"is-loading\")),\"loading\"===t.state&&(this.trigger(\"load\",t),t.state=\"ready\")}next(){const t=this.Carousel;t&&t.pages.length>1&&t.slideNext()}prev(){const t=this.Carousel;t&&t.pages.length>1&&t.slidePrev()}jumpTo(...t){this.Carousel&&this.Carousel.slideTo(...t)}isClosing(){return[\"closing\",\"customClosing\",\"destroy\"].includes(this.state)}isTopmost(){return R.getInstance().id==this.id}close(t){if(t&&t.preventDefault(),this.isClosing())return;if(!1===this.trigger(\"shouldClose\",t))return;if(this.state=\"closing\",this.Carousel.Panzoom.destroy(),this.detachEvents(),this.trigger(\"closing\",t),\"destroy\"===this.state)return;this.$container.setAttribute(\"aria-hidden\",\"true\"),this.$container.classList.add(\"is-closing\");const e=this.getSlide();if(this.Carousel.slides.forEach((t=>{t.$content&&t.index!==e.index&&this.Carousel.trigger(\"removeSlide\",t)})),\"closing\"===this.state){const t=void 0===e.hideClass?this.option(\"hideClass\"):e.hideClass;this.animateCSS(e.$content,t,(()=>{this.destroy()}),!0)}}destroy(){if(\"destroy\"===this.state)return;this.state=\"destroy\",this.trigger(\"destroy\");const t=this.option(\"placeFocusBack\")?this.option(\"triggerTarget\",this.getSlide().$trigger):null;this.Carousel.destroy(),this.detachPlugins(),this.Carousel=null,this.options={},this.events={},this.$container.remove(),this.$container=this.$backdrop=this.$carousel=null,t&&w(t),I.delete(this.id);const e=R.getInstance();e?e.focus():(document.documentElement.classList.remove(\"with-fancybox\"),document.body.classList.remove(\"is-using-mouse\"),this.revealScrollbar())}static show(t,e={}){return new R(t,e)}static fromEvent(t,e={}){if(t.defaultPrevented)return;if(t.button&&0!==t.button)return;if(t.ctrlKey||t.metaKey||t.shiftKey)return;const i=t.composedPath()[0];let s,o,n,a=i;if((a.matches(\"[data-fancybox-trigger]\")||(a=a.closest(\"[data-fancybox-trigger]\")))&&(e.triggerTarget=a,s=a&&a.dataset&&a.dataset.fancyboxTrigger),s){const t=document.querySelectorAll(`[data-fancybox=\"${s}\"]`),e=parseInt(a.dataset.fancyboxIndex,10)||0;a=t.length?t[e]:a}Array.from(R.openers.keys()).reverse().some((e=>{n=a||i;let s=!1;try{n instanceof Element&&(\"string\"==typeof e||e instanceof String)&&(s=n.matches(e)||(n=n.closest(e)))}catch(t){}return!!s&&(t.preventDefault(),o=e,!0)}));let r=!1;if(o){e.event=t,e.target=n,n.origTarget=i,r=R.fromOpener(o,e);const s=R.getInstance();s&&\"ready\"===s.state&&t.detail&&document.body.classList.add(\"is-using-mouse\")}return r}static fromOpener(t,i={}){let s=[],o=i.startIndex||0,n=i.target||null;const a=void 0!==(i=e({},i,R.openers.get(t))).groupAll&&i.groupAll,r=void 0===i.groupAttr?\"data-fancybox\":i.groupAttr,h=r&&n?n.getAttribute(`${r}`):\"\";if(!n||h||a){const e=i.root||(n?n.getRootNode():document.body);s=[].slice.call(e.querySelectorAll(t))}if(n&&!a&&(s=h?s.filter((t=>t.getAttribute(`${r}`)===h)):[n]),!s.length)return!1;const l=R.getInstance();return!(l&&s.indexOf(l.options.$trigger)>-1)&&(o=n?s.indexOf(n):o,s=s.map((function(t){const e=[\"false\",\"0\",\"no\",\"null\",\"undefined\"],i=[\"true\",\"1\",\"yes\"],s=Object.assign({},t.dataset),o={};for(let[t,n]of Object.entries(s))if(\"fancybox\"!==t)if(\"width\"===t||\"height\"===t)o[`_${t}`]=n;else if(\"string\"==typeof n||n instanceof String)if(e.indexOf(n)>-1)o[t]=!1;else if(i.indexOf(o[t])>-1)o[t]=!0;else try{o[t]=JSON.parse(n)}catch(e){o[t]=n}else o[t]=n;return t instanceof Element&&(o.$trigger=t),o})),new R(s,e({},i,{startIndex:o,$trigger:n})))}static bind(t,e={}){function i(){document.body.addEventListener(\"click\",R.fromEvent,!1)}v&&(R.openers.size||(/complete|interactive|loaded/.test(document.readyState)?i():document.addEventListener(\"DOMContentLoaded\",i)),R.openers.set(t,e))}static unbind(t){R.openers.delete(t),R.openers.size||R.destroy()}static destroy(){let t;for(;t=R.getInstance();)t.destroy();R.openers=new Map,document.body.removeEventListener(\"click\",R.fromEvent,!1)}static getInstance(t){if(t)return I.get(t);return Array.from(I.values()).reverse().find((t=>!t.isClosing()&&t))||null}static close(t=!0,e){if(t)for(const t of I.values())t.close(e);else{const t=R.getInstance();t&&t.close(e)}}static next(){const t=R.getInstance();t&&t.next()}static prev(){const t=R.getInstance();t&&t.prev()}}R.version=\"4.0.31\",R.defaults=M,R.openers=new Map,R.Plugins=O,R.bind(\"[data-fancybox]\");for(const[t,e]of Object.entries(R.Plugins||{}))\"function\"==typeof e.create&&e.create(R);export{y as Carousel,R as Fancybox,d as Panzoom};\n","import window from 'global/window';\n\nvar atob = function atob(s) {\n return window.atob ? window.atob(s) : Buffer.from(s, 'base64').toString('binary');\n};\n\nexport default function decodeB64ToUint8Array(b64Text) {\n var decodedString = atob(b64Text);\n var array = new Uint8Array(decodedString.length);\n\n for (var i = 0; i < decodedString.length; i++) {\n array[i] = decodedString.charCodeAt(i);\n }\n\n return array;\n}","/**\n * Loops through all supported media groups in master and calls the provided\n * callback for each group\n *\n * @param {Object} master\n * The parsed master manifest object\n * @param {string[]} groups\n * The media groups to call the callback for\n * @param {Function} callback\n * Callback to call for each media group\n */\nexport var forEachMediaGroup = function forEachMediaGroup(master, groups, callback) {\n groups.forEach(function (mediaType) {\n for (var groupKey in master.mediaGroups[mediaType]) {\n for (var labelKey in master.mediaGroups[mediaType][groupKey]) {\n var mediaProperties = master.mediaGroups[mediaType][groupKey][labelKey];\n callback(mediaProperties, mediaType, groupKey, labelKey);\n }\n }\n });\n};","import URLToolkit from 'url-toolkit';\nimport window from 'global/window';\nvar DEFAULT_LOCATION = 'http://example.com';\n\nvar resolveUrl = function resolveUrl(baseUrl, relativeUrl) {\n // return early if we don't need to resolve\n if (/^[a-z]+:/i.test(relativeUrl)) {\n return relativeUrl;\n } // if baseUrl is a data URI, ignore it and resolve everything relative to window.location\n\n\n if (/^data:/.test(baseUrl)) {\n baseUrl = window.location && window.location.href || '';\n } // IE11 supports URL but not the URL constructor\n // feature detect the behavior we want\n\n\n var nativeURL = typeof window.URL === 'function';\n var protocolLess = /^\\/\\//.test(baseUrl); // remove location if window.location isn't available (i.e. we're in node)\n // and if baseUrl isn't an absolute url\n\n var removeLocation = !window.location && !/\\/\\//i.test(baseUrl); // if the base URL is relative then combine with the current location\n\n if (nativeURL) {\n baseUrl = new window.URL(baseUrl, window.location || DEFAULT_LOCATION);\n } else if (!/\\/\\//i.test(baseUrl)) {\n baseUrl = URLToolkit.buildAbsoluteURL(window.location && window.location.href || '', baseUrl);\n }\n\n if (nativeURL) {\n var newUrl = new URL(relativeUrl, baseUrl); // if we're a protocol-less url, remove the protocol\n // and if we're location-less, remove the location\n // otherwise, return the url unmodified\n\n if (removeLocation) {\n return newUrl.href.slice(DEFAULT_LOCATION.length);\n } else if (protocolLess) {\n return newUrl.href.slice(newUrl.protocol.length);\n }\n\n return newUrl.href;\n }\n\n return URLToolkit.buildAbsoluteURL(baseUrl, relativeUrl);\n};\n\nexport default resolveUrl;","/**\n * @file stream.js\n */\n\n/**\n * A lightweight readable stream implemention that handles event dispatching.\n *\n * @class Stream\n */\nvar Stream = /*#__PURE__*/function () {\n function Stream() {\n this.listeners = {};\n }\n /**\n * Add a listener for a specified event type.\n *\n * @param {string} type the event name\n * @param {Function} listener the callback to be invoked when an event of\n * the specified type occurs\n */\n\n\n var _proto = Stream.prototype;\n\n _proto.on = function on(type, listener) {\n if (!this.listeners[type]) {\n this.listeners[type] = [];\n }\n\n this.listeners[type].push(listener);\n }\n /**\n * Remove a listener for a specified event type.\n *\n * @param {string} type the event name\n * @param {Function} listener a function previously registered for this\n * type of event through `on`\n * @return {boolean} if we could turn it off or not\n */\n ;\n\n _proto.off = function off(type, listener) {\n if (!this.listeners[type]) {\n return false;\n }\n\n var index = this.listeners[type].indexOf(listener); // TODO: which is better?\n // In Video.js we slice listener functions\n // on trigger so that it does not mess up the order\n // while we loop through.\n //\n // Here we slice on off so that the loop in trigger\n // can continue using it's old reference to loop without\n // messing up the order.\n\n this.listeners[type] = this.listeners[type].slice(0);\n this.listeners[type].splice(index, 1);\n return index > -1;\n }\n /**\n * Trigger an event of the specified type on this stream. Any additional\n * arguments to this function are passed as parameters to event listeners.\n *\n * @param {string} type the event name\n */\n ;\n\n _proto.trigger = function trigger(type) {\n var callbacks = this.listeners[type];\n\n if (!callbacks) {\n return;\n } // Slicing the arguments on every invocation of this method\n // can add a significant amount of overhead. Avoid the\n // intermediate object creation for the common case of a\n // single callback argument\n\n\n if (arguments.length === 2) {\n var length = callbacks.length;\n\n for (var i = 0; i < length; ++i) {\n callbacks[i].call(this, arguments[1]);\n }\n } else {\n var args = Array.prototype.slice.call(arguments, 1);\n var _length = callbacks.length;\n\n for (var _i = 0; _i < _length; ++_i) {\n callbacks[_i].apply(this, args);\n }\n }\n }\n /**\n * Destroys the stream and cleans up.\n */\n ;\n\n _proto.dispose = function dispose() {\n this.listeners = {};\n }\n /**\n * Forwards all `data` events on this stream to the destination stream. The\n * destination stream should provide a method `push` to receive the data\n * events as they arrive.\n *\n * @param {Stream} destination the stream that will receive all `data` events\n * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options\n */\n ;\n\n _proto.pipe = function pipe(destination) {\n this.on('data', function (data) {\n destination.push(data);\n });\n };\n\n return Stream;\n}();\n\nexport { Stream as default };","\"use strict\";\n\nvar window = require('global/window');\n\nvar httpResponseHandler = function httpResponseHandler(callback, decodeResponseBody) {\n if (decodeResponseBody === void 0) {\n decodeResponseBody = false;\n }\n\n return function (err, response, responseBody) {\n // if the XHR failed, return that error\n if (err) {\n callback(err);\n return;\n } // if the HTTP status code is 4xx or 5xx, the request also failed\n\n\n if (response.statusCode >= 400 && response.statusCode <= 599) {\n var cause = responseBody;\n\n if (decodeResponseBody) {\n if (window.TextDecoder) {\n var charset = getCharset(response.headers && response.headers['content-type']);\n\n try {\n cause = new TextDecoder(charset).decode(responseBody);\n } catch (e) {}\n } else {\n cause = String.fromCharCode.apply(null, new Uint8Array(responseBody));\n }\n }\n\n callback({\n cause: cause\n });\n return;\n } // otherwise, request succeeded\n\n\n callback(null, responseBody);\n };\n};\n\nfunction getCharset(contentTypeHeader) {\n if (contentTypeHeader === void 0) {\n contentTypeHeader = '';\n }\n\n return contentTypeHeader.toLowerCase().split(';').reduce(function (charset, contentType) {\n var _contentType$split = contentType.split('='),\n type = _contentType$split[0],\n value = _contentType$split[1];\n\n if (type.trim() === 'charset') {\n return value.trim();\n }\n\n return charset;\n }, 'utf-8');\n}\n\nmodule.exports = httpResponseHandler;","\"use strict\";\n\nvar window = require(\"global/window\");\n\nvar _extends = require(\"@babel/runtime/helpers/extends\");\n\nvar isFunction = require('is-function');\n\ncreateXHR.httpHandler = require('./http-handler.js');\n/**\n * @license\n * slighly modified parse-headers 2.0.2 \n * Copyright (c) 2014 David Björklund\n * Available under the MIT license\n * \n */\n\nvar parseHeaders = function parseHeaders(headers) {\n var result = {};\n\n if (!headers) {\n return result;\n }\n\n headers.trim().split('\\n').forEach(function (row) {\n var index = row.indexOf(':');\n var key = row.slice(0, index).trim().toLowerCase();\n var value = row.slice(index + 1).trim();\n\n if (typeof result[key] === 'undefined') {\n result[key] = value;\n } else if (Array.isArray(result[key])) {\n result[key].push(value);\n } else {\n result[key] = [result[key], value];\n }\n });\n return result;\n};\n\nmodule.exports = createXHR; // Allow use of default import syntax in TypeScript\n\nmodule.exports.default = createXHR;\ncreateXHR.XMLHttpRequest = window.XMLHttpRequest || noop;\ncreateXHR.XDomainRequest = \"withCredentials\" in new createXHR.XMLHttpRequest() ? createXHR.XMLHttpRequest : window.XDomainRequest;\nforEachArray([\"get\", \"put\", \"post\", \"patch\", \"head\", \"delete\"], function (method) {\n createXHR[method === \"delete\" ? \"del\" : method] = function (uri, options, callback) {\n options = initParams(uri, options, callback);\n options.method = method.toUpperCase();\n return _createXHR(options);\n };\n});\n\nfunction forEachArray(array, iterator) {\n for (var i = 0; i < array.length; i++) {\n iterator(array[i]);\n }\n}\n\nfunction isEmpty(obj) {\n for (var i in obj) {\n if (obj.hasOwnProperty(i)) return false;\n }\n\n return true;\n}\n\nfunction initParams(uri, options, callback) {\n var params = uri;\n\n if (isFunction(options)) {\n callback = options;\n\n if (typeof uri === \"string\") {\n params = {\n uri: uri\n };\n }\n } else {\n params = _extends({}, options, {\n uri: uri\n });\n }\n\n params.callback = callback;\n return params;\n}\n\nfunction createXHR(uri, options, callback) {\n options = initParams(uri, options, callback);\n return _createXHR(options);\n}\n\nfunction _createXHR(options) {\n if (typeof options.callback === \"undefined\") {\n throw new Error(\"callback argument missing\");\n }\n\n var called = false;\n\n var callback = function cbOnce(err, response, body) {\n if (!called) {\n called = true;\n options.callback(err, response, body);\n }\n };\n\n function readystatechange() {\n if (xhr.readyState === 4) {\n setTimeout(loadFunc, 0);\n }\n }\n\n function getBody() {\n // Chrome with requestType=blob throws errors arround when even testing access to responseText\n var body = undefined;\n\n if (xhr.response) {\n body = xhr.response;\n } else {\n body = xhr.responseText || getXml(xhr);\n }\n\n if (isJson) {\n try {\n body = JSON.parse(body);\n } catch (e) {}\n }\n\n return body;\n }\n\n function errorFunc(evt) {\n clearTimeout(timeoutTimer);\n\n if (!(evt instanceof Error)) {\n evt = new Error(\"\" + (evt || \"Unknown XMLHttpRequest Error\"));\n }\n\n evt.statusCode = 0;\n return callback(evt, failureResponse);\n } // will load the data & process the response in a special response object\n\n\n function loadFunc() {\n if (aborted) return;\n var status;\n clearTimeout(timeoutTimer);\n\n if (options.useXDR && xhr.status === undefined) {\n //IE8 CORS GET successful response doesn't have a status field, but body is fine\n status = 200;\n } else {\n status = xhr.status === 1223 ? 204 : xhr.status;\n }\n\n var response = failureResponse;\n var err = null;\n\n if (status !== 0) {\n response = {\n body: getBody(),\n statusCode: status,\n method: method,\n headers: {},\n url: uri,\n rawRequest: xhr\n };\n\n if (xhr.getAllResponseHeaders) {\n //remember xhr can in fact be XDR for CORS in IE\n response.headers = parseHeaders(xhr.getAllResponseHeaders());\n }\n } else {\n err = new Error(\"Internal XMLHttpRequest Error\");\n }\n\n return callback(err, response, response.body);\n }\n\n var xhr = options.xhr || null;\n\n if (!xhr) {\n if (options.cors || options.useXDR) {\n xhr = new createXHR.XDomainRequest();\n } else {\n xhr = new createXHR.XMLHttpRequest();\n }\n }\n\n var key;\n var aborted;\n var uri = xhr.url = options.uri || options.url;\n var method = xhr.method = options.method || \"GET\";\n var body = options.body || options.data;\n var headers = xhr.headers = options.headers || {};\n var sync = !!options.sync;\n var isJson = false;\n var timeoutTimer;\n var failureResponse = {\n body: undefined,\n headers: {},\n statusCode: 0,\n method: method,\n url: uri,\n rawRequest: xhr\n };\n\n if (\"json\" in options && options.json !== false) {\n isJson = true;\n headers[\"accept\"] || headers[\"Accept\"] || (headers[\"Accept\"] = \"application/json\"); //Don't override existing accept header declared by user\n\n if (method !== \"GET\" && method !== \"HEAD\") {\n headers[\"content-type\"] || headers[\"Content-Type\"] || (headers[\"Content-Type\"] = \"application/json\"); //Don't override existing accept header declared by user\n\n body = JSON.stringify(options.json === true ? body : options.json);\n }\n }\n\n xhr.onreadystatechange = readystatechange;\n xhr.onload = loadFunc;\n xhr.onerror = errorFunc; // IE9 must have onprogress be set to a unique function.\n\n xhr.onprogress = function () {// IE must die\n };\n\n xhr.onabort = function () {\n aborted = true;\n };\n\n xhr.ontimeout = errorFunc;\n xhr.open(method, uri, !sync, options.username, options.password); //has to be after open\n\n if (!sync) {\n xhr.withCredentials = !!options.withCredentials;\n } // Cannot set timeout with sync request\n // not setting timeout on the xhr object, because of old webkits etc. not handling that correctly\n // both npm's request and jquery 1.x use this kind of timeout, so this is being consistent\n\n\n if (!sync && options.timeout > 0) {\n timeoutTimer = setTimeout(function () {\n if (aborted) return;\n aborted = true; //IE9 may still call readystatechange\n\n xhr.abort(\"timeout\");\n var e = new Error(\"XMLHttpRequest timeout\");\n e.code = \"ETIMEDOUT\";\n errorFunc(e);\n }, options.timeout);\n }\n\n if (xhr.setRequestHeader) {\n for (key in headers) {\n if (headers.hasOwnProperty(key)) {\n xhr.setRequestHeader(key, headers[key]);\n }\n }\n } else if (options.headers && !isEmpty(options.headers)) {\n throw new Error(\"Headers cannot be set on an XDomainRequest object\");\n }\n\n if (\"responseType\" in options) {\n xhr.responseType = options.responseType;\n }\n\n if (\"beforeSend\" in options && typeof options.beforeSend === \"function\") {\n options.beforeSend(xhr);\n } // Microsoft Edge browser sends \"undefined\" when send is called with undefined value.\n // XMLHttpRequest spec says to pass null as body to indicate no body\n // See https://github.com/naugtur/xhr/issues/100.\n\n\n xhr.send(body || null);\n return xhr;\n}\n\nfunction getXml(xhr) {\n // xhr.responseXML will throw Exception \"InvalidStateError\" or \"DOMException\"\n // See https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/responseXML.\n try {\n if (xhr.responseType === \"document\") {\n return xhr.responseXML;\n }\n\n var firefoxBugTakenEffect = xhr.responseXML && xhr.responseXML.documentElement.nodeName === \"parsererror\";\n\n if (xhr.responseType === \"\" && !firefoxBugTakenEffect) {\n return xhr.responseXML;\n }\n } catch (e) {}\n\n return null;\n}\n\nfunction noop() {}","let items = document.querySelectorAll('.accordion__item')\r\nlet title = document.querySelectorAll('.accordion__title-wrapper')\r\n\r\nexport const toggleAccordion = () => {\r\n title.forEach((question) =>\r\n question.addEventListener('click', function () {\r\n let thisItem = this.parentNode\r\n\r\n items.forEach((item) => {\r\n if (thisItem == item) {\r\n thisItem.classList.toggle('active')\r\n return\r\n }\r\n item.classList.remove('active')\r\n })\r\n })\r\n )\r\n}\r\n","const burger = document.querySelector('.burger-js')\r\nconst menu = document.querySelector('.menu-js')\r\nconst menuLinks = document.querySelectorAll('.nav__link')\r\n\r\nexport const changeMenu = () => {\r\n\tburger?.addEventListener('click', () => {\r\n\t\tmenu?.classList.toggle('active')\r\n\t\tburger?.classList.toggle('active')\r\n\t\tif (menu?.classList.contains('active')) {\r\n\t\t\tdocument.body.style.overflowY = 'hidden'\r\n\t\t} else {\r\n\t\t\tdocument.body.style.overflowY = 'auto'\r\n\t\t}\r\n\t})\r\n\r\n\tmenuLinks.forEach((el) => {\r\n\t\tel.addEventListener('click', () => {\r\n\t\t\tmenu?.classList.remove('active')\r\n\t\t\tdocument.body.style.overflowY = 'auto'\r\n\t\t\tburger?.classList.remove('active')\r\n\t\t})\r\n\t})\r\n}\r\n","const btnNext = document.querySelector('.nav-history__next')\r\n\r\nexport const paintBtn = () => {\r\n try {\r\n const scrollToTop = () => {\r\n const top = window.scrollY\r\n if (top >= 100) {\r\n btnNext.classList.add('active')\r\n } else {\r\n btnNext.classList.remove('active')\r\n }\r\n }\r\n\r\n scrollToTop()\r\n window.addEventListener('scroll', () => {\r\n scrollToTop()\r\n })\r\n } catch (e) {\r\n console.log(e)\r\n }\r\n}\r\n","import SmoothScroll from '../../../node_modules/smooth-scroll/dist/smooth-scroll.js'\r\nconst header = document.querySelector('header')\r\nconst btnUpWrapper = document.querySelector('.btn-up-wrapper')\r\n\r\nexport const addSmoothScroll = () => {\r\n const scroll = new SmoothScroll('a[href*=\"#\"]', {\r\n header: '.header',\r\n speed: 500\r\n })\r\n\r\n const scrollToTop = () => {\r\n const top = window.scrollY\r\n if (top >= 100) {\r\n header.classList.add('active')\r\n } else {\r\n header.classList.remove('active')\r\n }\r\n\r\n if (top >= 300) {\r\n btnUpWrapper.classList.add('active')\r\n } else {\r\n btnUpWrapper.classList.remove('active')\r\n }\r\n }\r\n scrollToTop()\r\n window.addEventListener('scroll', () => {\r\n scrollToTop()\r\n })\r\n}\r\n","import Swiper, { Navigation, Pagination, Autoplay } from 'swiper'\r\nSwiper.use([Navigation, Pagination, Autoplay])\r\n\r\nexport const initializationSliders = () => {\r\n try {\r\n const recomendationsSlider = new Swiper('.recommendations__slider', {\r\n slidesPerView: '1',\r\n navigation: {\r\n nextEl: '.recommendations__slider-navigation-next',\r\n prevEl: '.recommendations__slider-navigation-prev'\r\n },\r\n loop: true\r\n })\r\n\r\n const goodsSlider = new Swiper('.goods__slider', {\r\n slidesPerView: 3,\r\n loop: true,\r\n navigation: {\r\n nextEl: '.goods__slider-next',\r\n prevEl: '.goods__slider-prev'\r\n },\r\n pagination: {\r\n clickable: true,\r\n el: '.goods__slider-pagination',\r\n clickable: true\r\n },\r\n breakpoints: {\r\n 940: {\r\n slidesPerView: 4\r\n },\r\n 764: {\r\n slidesPerView: 3\r\n },\r\n 600: {\r\n slidesPerView: 2\r\n },\r\n 0: {\r\n slidesPerView: 1\r\n }\r\n }\r\n })\r\n\r\n const professionalSlider = new Swiper('.professional__slider', {\r\n navigation: {\r\n nextEl: '.professional__slider-navigation-next',\r\n prevEl: '.professional__slider-navigation-prev'\r\n },\r\n paginationClickable: true,\r\n // loop: true,\r\n initialSlide: 1,\r\n centeredSlides: true,\r\n slidesPerView: 2,\r\n speed: 1000,\r\n zoom: {\r\n maxRatio: 1.6\r\n },\r\n pagination: {\r\n clickable: true,\r\n el: '.professional__slider-pagination',\r\n clickable: true\r\n },\r\n breakpoints: {\r\n 993: {\r\n spaceBetween: -180\r\n },\r\n 860: {\r\n spaceBetween: -260,\r\n slidesPerView: 2\r\n },\r\n 768: {\r\n spaceBetween: -200\r\n },\r\n 500: {\r\n spaceBetween: -80\r\n },\r\n 320: {\r\n slidesPerView: 1.6,\r\n spaceBetween: -80\r\n }\r\n },\r\n allowTouchMove: false\r\n })\r\n\r\n const interviewSlider = new Swiper('.interview__slider', {\r\n navigation: {\r\n nextEl: '.interview__slider-navigation-next',\r\n prevEl: '.interview__slider-navigation-prev'\r\n },\r\n pagination: {\r\n el: '.interview__slider-pagination',\r\n clickable: true\r\n },\r\n allowTouchMove: false,\r\n paginationClickable: true,\r\n centeredSlides: true,\r\n loop: true,\r\n speed: 1000\r\n })\r\n\r\n const partnersSlider = new Swiper('.partners__wrapper', {\r\n freeMode: true,\r\n grabCursor: true,\r\n centeredSlides: true,\r\n slidesPerView: 'auto',\r\n loop: true,\r\n speed: 2000,\r\n autoplay: {\r\n enabled: true,\r\n delay: 1,\r\n disableOnInteraction: true\r\n },\r\n freeModeMomentum: true\r\n })\r\n\r\n document\r\n .querySelector('.partners__wrapper')\r\n .addEventListener('mouseover', function () {\r\n partnersSlider.autoplay.stop()\r\n })\r\n\r\n document\r\n .querySelector('.partners__wrapper')\r\n .addEventListener('mouseout', function () {\r\n partnersSlider.autoplay.start()\r\n })\r\n\r\n window.addEventListener('scroll', () => {\r\n if (!partnersSlider.autoplay.running) {\r\n partnersSlider.autoplay.start()\r\n }\r\n })\r\n } catch (e) {\r\n console.error(e)\r\n }\r\n}\r\n","import videojs from 'video.js'\r\n\r\nconst playBtn = document.querySelector('.video__btn')\r\nconst videoTitle = document.querySelector('.video__title')\r\nconst videoText = document.querySelector('.video__text')\r\nconst videoLink = document.querySelector('.video__link')\r\nconst videoGradient = document.querySelector('.video__gradient')\r\nconst videoIntro = document.querySelector('.video__intro')\r\nconst videoMask = document.querySelector('.video__mask')\r\nconst videoJsTech = document.querySelector('.vjs-tech')\r\n\r\nexport const addVideoPlayer = () => {\r\n try {\r\n let isPreviewVideo = true\r\n\r\n const videoPlayer = videojs(document.getElementById('video__player'), {\r\n autoplay: true,\r\n loop: true,\r\n muted: true,\r\n controls: false,\r\n playToggle: false\r\n })\r\n\r\n const loadMainVideo = (desktopUrl, mobileUrl) => {\r\n if (window.screen.width > 768) {\r\n videoPlayer.src({\r\n type: 'video/mp4',\r\n src: `./videos/${desktopUrl}`\r\n })\r\n } else {\r\n videoPlayer.src({\r\n type: 'video/mp4',\r\n src: `./videos/${mobileUrl}`\r\n })\r\n }\r\n }\r\n\r\n loadMainVideo('preview.mp4', 'preview-mobile.mp4')\r\n videoPlayer.volume(0.7)\r\n const changePlayerStatus = () => {\r\n videoPlayer.play()\r\n\r\n videoPlayer.addClass('play')\r\n videoPlayer.muted(false)\r\n videoPlayer.controls(true)\r\n videoPlayer.loop(false)\r\n\r\n playBtn.classList.add('hide')\r\n videoTitle.classList.add('hide')\r\n videoText.classList.add('hide')\r\n videoLink.classList.add('hide')\r\n }\r\n\r\n videoPlayer.on('play', () => {\r\n if (!videoPlayer.played()) {\r\n videoPlayer.addClass('play')\r\n videoPlayer.removeClass('play')\r\n playBtn?.classList.add('hide')\r\n } else if (videoPlayer.played() && videoPlayer.loop()) {\r\n videoPlayer.removeClass('play')\r\n } else if (videoPlayer.played() && !videoPlayer.loop()) {\r\n videoPlayer.removeClass('play')\r\n playBtn?.classList.add('hide')\r\n }\r\n })\r\n\r\n videoPlayer.on('pause', () => {\r\n playBtn?.classList.remove('hide')\r\n })\r\n\r\n videoPlayer.on('ended', () => {\r\n playBtn?.classList.remove('hide')\r\n videoMask?.classList.remove('visible')\r\n })\r\n\r\n videoMask.addEventListener('click', () => {\r\n playBtn?.classList.remove('hide')\r\n videoPlayer.pause()\r\n videoMask?.classList.remove('visible')\r\n })\r\n\r\n playBtn.addEventListener('click', () => {\r\n if (isPreviewVideo === true) {\r\n loadMainVideo('video.mp4', 'video-mobile.mp4')\r\n isPreviewVideo = false\r\n }\r\n document.querySelector('.video__inner').classList.add('active')\r\n document.querySelector('.video-js').classList.add('active')\r\n document.querySelector('.vjs-poster').classList.add('active')\r\n\r\n videoPlayer.fluid(true)\r\n videoGradient?.classList.add('hide')\r\n videoMask?.classList.add('visible')\r\n playBtn?.classList.add('center-position')\r\n document.querySelector('video').style.objectFit = 'contain'\r\n\r\n if (videoPlayer.muted()) {\r\n videoPlayer.currentTime(0)\r\n changePlayerStatus()\r\n } else {\r\n changePlayerStatus()\r\n }\r\n })\r\n } catch (e) {\r\n console.log(e)\r\n }\r\n}\r\n","var topLevel = typeof global !== 'undefined' ? global :\n typeof window !== 'undefined' ? window : {}\nvar minDoc = require('min-document');\n\nvar doccy;\n\nif (typeof document !== 'undefined') {\n doccy = document;\n} else {\n doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4'];\n\n if (!doccy) {\n doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4'] = minDoc;\n }\n}\n\nmodule.exports = doccy;\n","var win;\n\nif (typeof window !== \"undefined\") {\n win = window;\n} else if (typeof global !== \"undefined\") {\n win = global;\n} else if (typeof self !== \"undefined\"){\n win = self;\n} else {\n win = {};\n}\n\nmodule.exports = win;\n","module.exports = isFunction\n\nvar toString = Object.prototype.toString\n\nfunction isFunction (fn) {\n if (!fn) {\n return false\n }\n var string = toString.call(fn)\n return string === '[object Function]' ||\n (typeof fn === 'function' && string !== '[object RegExp]') ||\n (typeof window !== 'undefined' &&\n // IE8 and below\n (fn === window.setTimeout ||\n fn === window.alert ||\n fn === window.confirm ||\n fn === window.prompt))\n};\n","// Source: http://jsfiddle.net/vWx8V/\n// http://stackoverflow.com/questions/5603195/full-list-of-javascript-keycodes\n\n/**\n * Conenience method returns corresponding value for given keyName or keyCode.\n *\n * @param {Mixed} keyCode {Number} or keyName {String}\n * @return {Mixed}\n * @api public\n */\n\nfunction keyCode(searchInput) {\n // Keyboard Events\n if (searchInput && 'object' === typeof searchInput) {\n var hasKeyCode = searchInput.which || searchInput.keyCode || searchInput.charCode\n if (hasKeyCode) searchInput = hasKeyCode\n }\n\n // Numbers\n if ('number' === typeof searchInput) return names[searchInput]\n\n // Everything else (cast to string)\n var search = String(searchInput)\n\n // check codes\n var foundNamedKey = codes[search.toLowerCase()]\n if (foundNamedKey) return foundNamedKey\n\n // check aliases\n var foundNamedKey = aliases[search.toLowerCase()]\n if (foundNamedKey) return foundNamedKey\n\n // weird character?\n if (search.length === 1) return search.charCodeAt(0)\n\n return undefined\n}\n\n/**\n * Compares a keyboard event with a given keyCode or keyName.\n *\n * @param {Event} event Keyboard event that should be tested\n * @param {Mixed} keyCode {Number} or keyName {String}\n * @return {Boolean}\n * @api public\n */\nkeyCode.isEventKey = function isEventKey(event, nameOrCode) {\n if (event && 'object' === typeof event) {\n var keyCode = event.which || event.keyCode || event.charCode\n if (keyCode === null || keyCode === undefined) { return false; }\n if (typeof nameOrCode === 'string') {\n // check codes\n var foundNamedKey = codes[nameOrCode.toLowerCase()]\n if (foundNamedKey) { return foundNamedKey === keyCode; }\n \n // check aliases\n var foundNamedKey = aliases[nameOrCode.toLowerCase()]\n if (foundNamedKey) { return foundNamedKey === keyCode; }\n } else if (typeof nameOrCode === 'number') {\n return nameOrCode === keyCode;\n }\n return false;\n }\n}\n\nexports = module.exports = keyCode;\n\n/**\n * Get by name\n *\n * exports.code['enter'] // => 13\n */\n\nvar codes = exports.code = exports.codes = {\n 'backspace': 8,\n 'tab': 9,\n 'enter': 13,\n 'shift': 16,\n 'ctrl': 17,\n 'alt': 18,\n 'pause/break': 19,\n 'caps lock': 20,\n 'esc': 27,\n 'space': 32,\n 'page up': 33,\n 'page down': 34,\n 'end': 35,\n 'home': 36,\n 'left': 37,\n 'up': 38,\n 'right': 39,\n 'down': 40,\n 'insert': 45,\n 'delete': 46,\n 'command': 91,\n 'left command': 91,\n 'right command': 93,\n 'numpad *': 106,\n 'numpad +': 107,\n 'numpad -': 109,\n 'numpad .': 110,\n 'numpad /': 111,\n 'num lock': 144,\n 'scroll lock': 145,\n 'my computer': 182,\n 'my calculator': 183,\n ';': 186,\n '=': 187,\n ',': 188,\n '-': 189,\n '.': 190,\n '/': 191,\n '`': 192,\n '[': 219,\n '\\\\': 220,\n ']': 221,\n \"'\": 222\n}\n\n// Helper aliases\n\nvar aliases = exports.aliases = {\n 'windows': 91,\n '⇧': 16,\n '⌥': 18,\n '⌃': 17,\n '⌘': 91,\n 'ctl': 17,\n 'control': 17,\n 'option': 18,\n 'pause': 19,\n 'break': 19,\n 'caps': 20,\n 'return': 13,\n 'escape': 27,\n 'spc': 32,\n 'spacebar': 32,\n 'pgup': 33,\n 'pgdn': 34,\n 'ins': 45,\n 'del': 46,\n 'cmd': 91\n}\n\n/*!\n * Programatically add the following\n */\n\n// lower case chars\nfor (i = 97; i < 123; i++) codes[String.fromCharCode(i)] = i - 32\n\n// numbers\nfor (var i = 48; i < 58; i++) codes[i - 48] = i\n\n// function keys\nfor (i = 1; i < 13; i++) codes['f'+i] = i + 111\n\n// numpad keys\nfor (i = 0; i < 10; i++) codes['numpad '+i] = i + 96\n\n/**\n * Get by code\n *\n * exports.name[13] // => 'Enter'\n */\n\nvar names = exports.names = exports.title = {} // title for backward compat\n\n// Create reverse mapping\nfor (i in codes) names[codes[i]] = i\n\n// Add aliases\nfor (var alias in aliases) {\n codes[alias] = aliases[alias]\n}\n","/*! @name m3u8-parser @version 6.2.0 @license Apache-2.0 */\nimport Stream from '@videojs/vhs-utils/es/stream.js';\nimport _extends from '@babel/runtime/helpers/extends';\nimport decodeB64ToUint8Array from '@videojs/vhs-utils/es/decode-b64-to-uint8-array.js';\n\n/**\n * @file m3u8/line-stream.js\n */\n/**\n * A stream that buffers string input and generates a `data` event for each\n * line.\n *\n * @class LineStream\n * @extends Stream\n */\n\nclass LineStream extends Stream {\n constructor() {\n super();\n this.buffer = '';\n }\n /**\n * Add new data to be parsed.\n *\n * @param {string} data the text to process\n */\n\n\n push(data) {\n let nextNewline;\n this.buffer += data;\n nextNewline = this.buffer.indexOf('\\n');\n\n for (; nextNewline > -1; nextNewline = this.buffer.indexOf('\\n')) {\n this.trigger('data', this.buffer.substring(0, nextNewline));\n this.buffer = this.buffer.substring(nextNewline + 1);\n }\n }\n\n}\n\nconst TAB = String.fromCharCode(0x09);\n\nconst parseByterange = function (byterangeString) {\n // optionally match and capture 0+ digits before `@`\n // optionally match and capture 0+ digits after `@`\n const match = /([0-9.]*)?@?([0-9.]*)?/.exec(byterangeString || '');\n const result = {};\n\n if (match[1]) {\n result.length = parseInt(match[1], 10);\n }\n\n if (match[2]) {\n result.offset = parseInt(match[2], 10);\n }\n\n return result;\n};\n/**\n * \"forgiving\" attribute list psuedo-grammar:\n * attributes -> keyvalue (',' keyvalue)*\n * keyvalue -> key '=' value\n * key -> [^=]*\n * value -> '\"' [^\"]* '\"' | [^,]*\n */\n\n\nconst attributeSeparator = function () {\n const key = '[^=]*';\n const value = '\"[^\"]*\"|[^,]*';\n const keyvalue = '(?:' + key + ')=(?:' + value + ')';\n return new RegExp('(?:^|,)(' + keyvalue + ')');\n};\n/**\n * Parse attributes from a line given the separator\n *\n * @param {string} attributes the attribute line to parse\n */\n\n\nconst parseAttributes = function (attributes) {\n const result = {};\n\n if (!attributes) {\n return result;\n } // split the string using attributes as the separator\n\n\n const attrs = attributes.split(attributeSeparator());\n let i = attrs.length;\n let attr;\n\n while (i--) {\n // filter out unmatched portions of the string\n if (attrs[i] === '') {\n continue;\n } // split the key and value\n\n\n attr = /([^=]*)=(.*)/.exec(attrs[i]).slice(1); // trim whitespace and remove optional quotes around the value\n\n attr[0] = attr[0].replace(/^\\s+|\\s+$/g, '');\n attr[1] = attr[1].replace(/^\\s+|\\s+$/g, '');\n attr[1] = attr[1].replace(/^['\"](.*)['\"]$/g, '$1');\n result[attr[0]] = attr[1];\n }\n\n return result;\n};\n/**\n * A line-level M3U8 parser event stream. It expects to receive input one\n * line at a time and performs a context-free parse of its contents. A stream\n * interpretation of a manifest can be useful if the manifest is expected to\n * be too large to fit comfortably into memory or the entirety of the input\n * is not immediately available. Otherwise, it's probably much easier to work\n * with a regular `Parser` object.\n *\n * Produces `data` events with an object that captures the parser's\n * interpretation of the input. That object has a property `tag` that is one\n * of `uri`, `comment`, or `tag`. URIs only have a single additional\n * property, `line`, which captures the entirety of the input without\n * interpretation. Comments similarly have a single additional property\n * `text` which is the input without the leading `#`.\n *\n * Tags always have a property `tagType` which is the lower-cased version of\n * the M3U8 directive without the `#EXT` or `#EXT-X-` prefix. For instance,\n * `#EXT-X-MEDIA-SEQUENCE` becomes `media-sequence` when parsed. Unrecognized\n * tags are given the tag type `unknown` and a single additional property\n * `data` with the remainder of the input.\n *\n * @class ParseStream\n * @extends Stream\n */\n\n\nclass ParseStream extends Stream {\n constructor() {\n super();\n this.customParsers = [];\n this.tagMappers = [];\n }\n /**\n * Parses an additional line of input.\n *\n * @param {string} line a single line of an M3U8 file to parse\n */\n\n\n push(line) {\n let match;\n let event; // strip whitespace\n\n line = line.trim();\n\n if (line.length === 0) {\n // ignore empty lines\n return;\n } // URIs\n\n\n if (line[0] !== '#') {\n this.trigger('data', {\n type: 'uri',\n uri: line\n });\n return;\n } // map tags\n\n\n const newLines = this.tagMappers.reduce((acc, mapper) => {\n const mappedLine = mapper(line); // skip if unchanged\n\n if (mappedLine === line) {\n return acc;\n }\n\n return acc.concat([mappedLine]);\n }, [line]);\n newLines.forEach(newLine => {\n for (let i = 0; i < this.customParsers.length; i++) {\n if (this.customParsers[i].call(this, newLine)) {\n return;\n }\n } // Comments\n\n\n if (newLine.indexOf('#EXT') !== 0) {\n this.trigger('data', {\n type: 'comment',\n text: newLine.slice(1)\n });\n return;\n } // strip off any carriage returns here so the regex matching\n // doesn't have to account for them.\n\n\n newLine = newLine.replace('\\r', ''); // Tags\n\n match = /^#EXTM3U/.exec(newLine);\n\n if (match) {\n this.trigger('data', {\n type: 'tag',\n tagType: 'm3u'\n });\n return;\n }\n\n match = /^#EXTINF:([0-9\\.]*)?,?(.*)?$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'inf'\n };\n\n if (match[1]) {\n event.duration = parseFloat(match[1]);\n }\n\n if (match[2]) {\n event.title = match[2];\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-TARGETDURATION:([0-9.]*)?/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'targetduration'\n };\n\n if (match[1]) {\n event.duration = parseInt(match[1], 10);\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-VERSION:([0-9.]*)?/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'version'\n };\n\n if (match[1]) {\n event.version = parseInt(match[1], 10);\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-MEDIA-SEQUENCE:(\\-?[0-9.]*)?/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'media-sequence'\n };\n\n if (match[1]) {\n event.number = parseInt(match[1], 10);\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-DISCONTINUITY-SEQUENCE:(\\-?[0-9.]*)?/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'discontinuity-sequence'\n };\n\n if (match[1]) {\n event.number = parseInt(match[1], 10);\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-PLAYLIST-TYPE:(.*)?$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'playlist-type'\n };\n\n if (match[1]) {\n event.playlistType = match[1];\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-BYTERANGE:(.*)?$/.exec(newLine);\n\n if (match) {\n event = _extends(parseByterange(match[1]), {\n type: 'tag',\n tagType: 'byterange'\n });\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-ALLOW-CACHE:(YES|NO)?/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'allow-cache'\n };\n\n if (match[1]) {\n event.allowed = !/NO/.test(match[1]);\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-MAP:(.*)$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'map'\n };\n\n if (match[1]) {\n const attributes = parseAttributes(match[1]);\n\n if (attributes.URI) {\n event.uri = attributes.URI;\n }\n\n if (attributes.BYTERANGE) {\n event.byterange = parseByterange(attributes.BYTERANGE);\n }\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-STREAM-INF:(.*)$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'stream-inf'\n };\n\n if (match[1]) {\n event.attributes = parseAttributes(match[1]);\n\n if (event.attributes.RESOLUTION) {\n const split = event.attributes.RESOLUTION.split('x');\n const resolution = {};\n\n if (split[0]) {\n resolution.width = parseInt(split[0], 10);\n }\n\n if (split[1]) {\n resolution.height = parseInt(split[1], 10);\n }\n\n event.attributes.RESOLUTION = resolution;\n }\n\n if (event.attributes.BANDWIDTH) {\n event.attributes.BANDWIDTH = parseInt(event.attributes.BANDWIDTH, 10);\n }\n\n if (event.attributes['FRAME-RATE']) {\n event.attributes['FRAME-RATE'] = parseFloat(event.attributes['FRAME-RATE']);\n }\n\n if (event.attributes['PROGRAM-ID']) {\n event.attributes['PROGRAM-ID'] = parseInt(event.attributes['PROGRAM-ID'], 10);\n }\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-MEDIA:(.*)$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'media'\n };\n\n if (match[1]) {\n event.attributes = parseAttributes(match[1]);\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-ENDLIST/.exec(newLine);\n\n if (match) {\n this.trigger('data', {\n type: 'tag',\n tagType: 'endlist'\n });\n return;\n }\n\n match = /^#EXT-X-DISCONTINUITY/.exec(newLine);\n\n if (match) {\n this.trigger('data', {\n type: 'tag',\n tagType: 'discontinuity'\n });\n return;\n }\n\n match = /^#EXT-X-PROGRAM-DATE-TIME:(.*)$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'program-date-time'\n };\n\n if (match[1]) {\n event.dateTimeString = match[1];\n event.dateTimeObject = new Date(match[1]);\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-KEY:(.*)$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'key'\n };\n\n if (match[1]) {\n event.attributes = parseAttributes(match[1]); // parse the IV string into a Uint32Array\n\n if (event.attributes.IV) {\n if (event.attributes.IV.substring(0, 2).toLowerCase() === '0x') {\n event.attributes.IV = event.attributes.IV.substring(2);\n }\n\n event.attributes.IV = event.attributes.IV.match(/.{8}/g);\n event.attributes.IV[0] = parseInt(event.attributes.IV[0], 16);\n event.attributes.IV[1] = parseInt(event.attributes.IV[1], 16);\n event.attributes.IV[2] = parseInt(event.attributes.IV[2], 16);\n event.attributes.IV[3] = parseInt(event.attributes.IV[3], 16);\n event.attributes.IV = new Uint32Array(event.attributes.IV);\n }\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-START:(.*)$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'start'\n };\n\n if (match[1]) {\n event.attributes = parseAttributes(match[1]);\n event.attributes['TIME-OFFSET'] = parseFloat(event.attributes['TIME-OFFSET']);\n event.attributes.PRECISE = /YES/.test(event.attributes.PRECISE);\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-CUE-OUT-CONT:(.*)?$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'cue-out-cont'\n };\n\n if (match[1]) {\n event.data = match[1];\n } else {\n event.data = '';\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-CUE-OUT:(.*)?$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'cue-out'\n };\n\n if (match[1]) {\n event.data = match[1];\n } else {\n event.data = '';\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-CUE-IN:(.*)?$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'cue-in'\n };\n\n if (match[1]) {\n event.data = match[1];\n } else {\n event.data = '';\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-SKIP:(.*)$/.exec(newLine);\n\n if (match && match[1]) {\n event = {\n type: 'tag',\n tagType: 'skip'\n };\n event.attributes = parseAttributes(match[1]);\n\n if (event.attributes.hasOwnProperty('SKIPPED-SEGMENTS')) {\n event.attributes['SKIPPED-SEGMENTS'] = parseInt(event.attributes['SKIPPED-SEGMENTS'], 10);\n }\n\n if (event.attributes.hasOwnProperty('RECENTLY-REMOVED-DATERANGES')) {\n event.attributes['RECENTLY-REMOVED-DATERANGES'] = event.attributes['RECENTLY-REMOVED-DATERANGES'].split(TAB);\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-PART:(.*)$/.exec(newLine);\n\n if (match && match[1]) {\n event = {\n type: 'tag',\n tagType: 'part'\n };\n event.attributes = parseAttributes(match[1]);\n ['DURATION'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = parseFloat(event.attributes[key]);\n }\n });\n ['INDEPENDENT', 'GAP'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = /YES/.test(event.attributes[key]);\n }\n });\n\n if (event.attributes.hasOwnProperty('BYTERANGE')) {\n event.attributes.byterange = parseByterange(event.attributes.BYTERANGE);\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-SERVER-CONTROL:(.*)$/.exec(newLine);\n\n if (match && match[1]) {\n event = {\n type: 'tag',\n tagType: 'server-control'\n };\n event.attributes = parseAttributes(match[1]);\n ['CAN-SKIP-UNTIL', 'PART-HOLD-BACK', 'HOLD-BACK'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = parseFloat(event.attributes[key]);\n }\n });\n ['CAN-SKIP-DATERANGES', 'CAN-BLOCK-RELOAD'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = /YES/.test(event.attributes[key]);\n }\n });\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-PART-INF:(.*)$/.exec(newLine);\n\n if (match && match[1]) {\n event = {\n type: 'tag',\n tagType: 'part-inf'\n };\n event.attributes = parseAttributes(match[1]);\n ['PART-TARGET'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = parseFloat(event.attributes[key]);\n }\n });\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-PRELOAD-HINT:(.*)$/.exec(newLine);\n\n if (match && match[1]) {\n event = {\n type: 'tag',\n tagType: 'preload-hint'\n };\n event.attributes = parseAttributes(match[1]);\n ['BYTERANGE-START', 'BYTERANGE-LENGTH'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = parseInt(event.attributes[key], 10);\n const subkey = key === 'BYTERANGE-LENGTH' ? 'length' : 'offset';\n event.attributes.byterange = event.attributes.byterange || {};\n event.attributes.byterange[subkey] = event.attributes[key]; // only keep the parsed byterange object.\n\n delete event.attributes[key];\n }\n });\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-RENDITION-REPORT:(.*)$/.exec(newLine);\n\n if (match && match[1]) {\n event = {\n type: 'tag',\n tagType: 'rendition-report'\n };\n event.attributes = parseAttributes(match[1]);\n ['LAST-MSN', 'LAST-PART'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = parseInt(event.attributes[key], 10);\n }\n });\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-DATERANGE:(.*)$/.exec(newLine);\n\n if (match && match[1]) {\n event = {\n type: 'tag',\n tagType: 'daterange'\n };\n event.attributes = parseAttributes(match[1]);\n ['ID', 'CLASS'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = String(event.attributes[key]);\n }\n });\n ['START-DATE', 'END-DATE'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = new Date(event.attributes[key]);\n }\n });\n ['DURATION', 'PLANNED-DURATION'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = parseFloat(event.attributes[key]);\n }\n });\n ['END-ON-NEXT'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = /YES/i.test(event.attributes[key]);\n }\n });\n ['SCTE35-CMD', ' SCTE35-OUT', 'SCTE35-IN'].forEach(function (key) {\n if (event.attributes.hasOwnProperty(key)) {\n event.attributes[key] = event.attributes[key].toString(16);\n }\n });\n const clientAttributePattern = /^X-([A-Z]+-)+[A-Z]+$/;\n\n for (const key in event.attributes) {\n if (!clientAttributePattern.test(key)) {\n continue;\n }\n\n const isHexaDecimal = /[0-9A-Fa-f]{6}/g.test(event.attributes[key]);\n const isDecimalFloating = /^\\d+(\\.\\d+)?$/.test(event.attributes[key]);\n event.attributes[key] = isHexaDecimal ? event.attributes[key].toString(16) : isDecimalFloating ? parseFloat(event.attributes[key]) : String(event.attributes[key]);\n }\n\n this.trigger('data', event);\n return;\n }\n\n match = /^#EXT-X-INDEPENDENT-SEGMENTS/.exec(newLine);\n\n if (match) {\n this.trigger('data', {\n type: 'tag',\n tagType: 'independent-segments'\n });\n return;\n } // unknown tag type\n\n\n this.trigger('data', {\n type: 'tag',\n data: newLine.slice(4)\n });\n });\n }\n /**\n * Add a parser for custom headers\n *\n * @param {Object} options a map of options for the added parser\n * @param {RegExp} options.expression a regular expression to match the custom header\n * @param {string} options.customType the custom type to register to the output\n * @param {Function} [options.dataParser] function to parse the line into an object\n * @param {boolean} [options.segment] should tag data be attached to the segment object\n */\n\n\n addParser({\n expression,\n customType,\n dataParser,\n segment\n }) {\n if (typeof dataParser !== 'function') {\n dataParser = line => line;\n }\n\n this.customParsers.push(line => {\n const match = expression.exec(line);\n\n if (match) {\n this.trigger('data', {\n type: 'custom',\n data: dataParser(line),\n customType,\n segment\n });\n return true;\n }\n });\n }\n /**\n * Add a custom header mapper\n *\n * @param {Object} options\n * @param {RegExp} options.expression a regular expression to match the custom header\n * @param {Function} options.map function to translate tag into a different tag\n */\n\n\n addTagMapper({\n expression,\n map\n }) {\n const mapFn = line => {\n if (expression.test(line)) {\n return map(line);\n }\n\n return line;\n };\n\n this.tagMappers.push(mapFn);\n }\n\n}\n\nconst camelCase = str => str.toLowerCase().replace(/-(\\w)/g, a => a[1].toUpperCase());\n\nconst camelCaseKeys = function (attributes) {\n const result = {};\n Object.keys(attributes).forEach(function (key) {\n result[camelCase(key)] = attributes[key];\n });\n return result;\n}; // set SERVER-CONTROL hold back based upon targetDuration and partTargetDuration\n// we need this helper because defaults are based upon targetDuration and\n// partTargetDuration being set, but they may not be if SERVER-CONTROL appears before\n// target durations are set.\n\n\nconst setHoldBack = function (manifest) {\n const {\n serverControl,\n targetDuration,\n partTargetDuration\n } = manifest;\n\n if (!serverControl) {\n return;\n }\n\n const tag = '#EXT-X-SERVER-CONTROL';\n const hb = 'holdBack';\n const phb = 'partHoldBack';\n const minTargetDuration = targetDuration && targetDuration * 3;\n const minPartDuration = partTargetDuration && partTargetDuration * 2;\n\n if (targetDuration && !serverControl.hasOwnProperty(hb)) {\n serverControl[hb] = minTargetDuration;\n this.trigger('info', {\n message: `${tag} defaulting HOLD-BACK to targetDuration * 3 (${minTargetDuration}).`\n });\n }\n\n if (minTargetDuration && serverControl[hb] < minTargetDuration) {\n this.trigger('warn', {\n message: `${tag} clamping HOLD-BACK (${serverControl[hb]}) to targetDuration * 3 (${minTargetDuration})`\n });\n serverControl[hb] = minTargetDuration;\n } // default no part hold back to part target duration * 3\n\n\n if (partTargetDuration && !serverControl.hasOwnProperty(phb)) {\n serverControl[phb] = partTargetDuration * 3;\n this.trigger('info', {\n message: `${tag} defaulting PART-HOLD-BACK to partTargetDuration * 3 (${serverControl[phb]}).`\n });\n } // if part hold back is too small default it to part target duration * 2\n\n\n if (partTargetDuration && serverControl[phb] < minPartDuration) {\n this.trigger('warn', {\n message: `${tag} clamping PART-HOLD-BACK (${serverControl[phb]}) to partTargetDuration * 2 (${minPartDuration}).`\n });\n serverControl[phb] = minPartDuration;\n }\n};\n/**\n * A parser for M3U8 files. The current interpretation of the input is\n * exposed as a property `manifest` on parser objects. It's just two lines to\n * create and parse a manifest once you have the contents available as a string:\n *\n * ```js\n * var parser = new m3u8.Parser();\n * parser.push(xhr.responseText);\n * ```\n *\n * New input can later be applied to update the manifest object by calling\n * `push` again.\n *\n * The parser attempts to create a usable manifest object even if the\n * underlying input is somewhat nonsensical. It emits `info` and `warning`\n * events during the parse if it encounters input that seems invalid or\n * requires some property of the manifest object to be defaulted.\n *\n * @class Parser\n * @extends Stream\n */\n\n\nclass Parser extends Stream {\n constructor() {\n super();\n this.lineStream = new LineStream();\n this.parseStream = new ParseStream();\n this.lineStream.pipe(this.parseStream);\n /* eslint-disable consistent-this */\n\n const self = this;\n /* eslint-enable consistent-this */\n\n const uris = [];\n let currentUri = {}; // if specified, the active EXT-X-MAP definition\n\n let currentMap; // if specified, the active decryption key\n\n let key;\n let hasParts = false;\n\n const noop = function () {};\n\n const defaultMediaGroups = {\n 'AUDIO': {},\n 'VIDEO': {},\n 'CLOSED-CAPTIONS': {},\n 'SUBTITLES': {}\n }; // This is the Widevine UUID from DASH IF IOP. The same exact string is\n // used in MPDs with Widevine encrypted streams.\n\n const widevineUuid = 'urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed'; // group segments into numbered timelines delineated by discontinuities\n\n let currentTimeline = 0; // the manifest is empty until the parse stream begins delivering data\n\n this.manifest = {\n allowCache: true,\n discontinuityStarts: [],\n segments: []\n }; // keep track of the last seen segment's byte range end, as segments are not required\n // to provide the offset, in which case it defaults to the next byte after the\n // previous segment\n\n let lastByterangeEnd = 0; // keep track of the last seen part's byte range end.\n\n let lastPartByterangeEnd = 0;\n const daterangeTags = {};\n this.on('end', () => {\n // only add preloadSegment if we don't yet have a uri for it.\n // and we actually have parts/preloadHints\n if (currentUri.uri || !currentUri.parts && !currentUri.preloadHints) {\n return;\n }\n\n if (!currentUri.map && currentMap) {\n currentUri.map = currentMap;\n }\n\n if (!currentUri.key && key) {\n currentUri.key = key;\n }\n\n if (!currentUri.timeline && typeof currentTimeline === 'number') {\n currentUri.timeline = currentTimeline;\n }\n\n this.manifest.preloadSegment = currentUri;\n }); // update the manifest with the m3u8 entry from the parse stream\n\n this.parseStream.on('data', function (entry) {\n let mediaGroup;\n let rendition;\n ({\n tag() {\n // switch based on the tag type\n (({\n version() {\n if (entry.version) {\n this.manifest.version = entry.version;\n }\n },\n\n 'allow-cache'() {\n this.manifest.allowCache = entry.allowed;\n\n if (!('allowed' in entry)) {\n this.trigger('info', {\n message: 'defaulting allowCache to YES'\n });\n this.manifest.allowCache = true;\n }\n },\n\n byterange() {\n const byterange = {};\n\n if ('length' in entry) {\n currentUri.byterange = byterange;\n byterange.length = entry.length;\n\n if (!('offset' in entry)) {\n /*\n * From the latest spec (as of this writing):\n * https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.2.2\n *\n * Same text since EXT-X-BYTERANGE's introduction in draft 7:\n * https://tools.ietf.org/html/draft-pantos-http-live-streaming-07#section-3.3.1)\n *\n * \"If o [offset] is not present, the sub-range begins at the next byte\n * following the sub-range of the previous media segment.\"\n */\n entry.offset = lastByterangeEnd;\n }\n }\n\n if ('offset' in entry) {\n currentUri.byterange = byterange;\n byterange.offset = entry.offset;\n }\n\n lastByterangeEnd = byterange.offset + byterange.length;\n },\n\n endlist() {\n this.manifest.endList = true;\n },\n\n inf() {\n if (!('mediaSequence' in this.manifest)) {\n this.manifest.mediaSequence = 0;\n this.trigger('info', {\n message: 'defaulting media sequence to zero'\n });\n }\n\n if (!('discontinuitySequence' in this.manifest)) {\n this.manifest.discontinuitySequence = 0;\n this.trigger('info', {\n message: 'defaulting discontinuity sequence to zero'\n });\n }\n\n if (entry.duration > 0) {\n currentUri.duration = entry.duration;\n }\n\n if (entry.duration === 0) {\n currentUri.duration = 0.01;\n this.trigger('info', {\n message: 'updating zero segment duration to a small value'\n });\n }\n\n this.manifest.segments = uris;\n },\n\n key() {\n if (!entry.attributes) {\n this.trigger('warn', {\n message: 'ignoring key declaration without attribute list'\n });\n return;\n } // clear the active encryption key\n\n\n if (entry.attributes.METHOD === 'NONE') {\n key = null;\n return;\n }\n\n if (!entry.attributes.URI) {\n this.trigger('warn', {\n message: 'ignoring key declaration without URI'\n });\n return;\n }\n\n if (entry.attributes.KEYFORMAT === 'com.apple.streamingkeydelivery') {\n this.manifest.contentProtection = this.manifest.contentProtection || {}; // TODO: add full support for this.\n\n this.manifest.contentProtection['com.apple.fps.1_0'] = {\n attributes: entry.attributes\n };\n return;\n }\n\n if (entry.attributes.KEYFORMAT === 'com.microsoft.playready') {\n this.manifest.contentProtection = this.manifest.contentProtection || {}; // TODO: add full support for this.\n\n this.manifest.contentProtection['com.microsoft.playready'] = {\n uri: entry.attributes.URI\n };\n return;\n } // check if the content is encrypted for Widevine\n // Widevine/HLS spec: https://storage.googleapis.com/wvdocs/Widevine_DRM_HLS.pdf\n\n\n if (entry.attributes.KEYFORMAT === widevineUuid) {\n const VALID_METHODS = ['SAMPLE-AES', 'SAMPLE-AES-CTR', 'SAMPLE-AES-CENC'];\n\n if (VALID_METHODS.indexOf(entry.attributes.METHOD) === -1) {\n this.trigger('warn', {\n message: 'invalid key method provided for Widevine'\n });\n return;\n }\n\n if (entry.attributes.METHOD === 'SAMPLE-AES-CENC') {\n this.trigger('warn', {\n message: 'SAMPLE-AES-CENC is deprecated, please use SAMPLE-AES-CTR instead'\n });\n }\n\n if (entry.attributes.URI.substring(0, 23) !== 'data:text/plain;base64,') {\n this.trigger('warn', {\n message: 'invalid key URI provided for Widevine'\n });\n return;\n }\n\n if (!(entry.attributes.KEYID && entry.attributes.KEYID.substring(0, 2) === '0x')) {\n this.trigger('warn', {\n message: 'invalid key ID provided for Widevine'\n });\n return;\n } // if Widevine key attributes are valid, store them as `contentProtection`\n // on the manifest to emulate Widevine tag structure in a DASH mpd\n\n\n this.manifest.contentProtection = this.manifest.contentProtection || {};\n this.manifest.contentProtection['com.widevine.alpha'] = {\n attributes: {\n schemeIdUri: entry.attributes.KEYFORMAT,\n // remove '0x' from the key id string\n keyId: entry.attributes.KEYID.substring(2)\n },\n // decode the base64-encoded PSSH box\n pssh: decodeB64ToUint8Array(entry.attributes.URI.split(',')[1])\n };\n return;\n }\n\n if (!entry.attributes.METHOD) {\n this.trigger('warn', {\n message: 'defaulting key method to AES-128'\n });\n } // setup an encryption key for upcoming segments\n\n\n key = {\n method: entry.attributes.METHOD || 'AES-128',\n uri: entry.attributes.URI\n };\n\n if (typeof entry.attributes.IV !== 'undefined') {\n key.iv = entry.attributes.IV;\n }\n },\n\n 'media-sequence'() {\n if (!isFinite(entry.number)) {\n this.trigger('warn', {\n message: 'ignoring invalid media sequence: ' + entry.number\n });\n return;\n }\n\n this.manifest.mediaSequence = entry.number;\n },\n\n 'discontinuity-sequence'() {\n if (!isFinite(entry.number)) {\n this.trigger('warn', {\n message: 'ignoring invalid discontinuity sequence: ' + entry.number\n });\n return;\n }\n\n this.manifest.discontinuitySequence = entry.number;\n currentTimeline = entry.number;\n },\n\n 'playlist-type'() {\n if (!/VOD|EVENT/.test(entry.playlistType)) {\n this.trigger('warn', {\n message: 'ignoring unknown playlist type: ' + entry.playlist\n });\n return;\n }\n\n this.manifest.playlistType = entry.playlistType;\n },\n\n map() {\n currentMap = {};\n\n if (entry.uri) {\n currentMap.uri = entry.uri;\n }\n\n if (entry.byterange) {\n currentMap.byterange = entry.byterange;\n }\n\n if (key) {\n currentMap.key = key;\n }\n },\n\n 'stream-inf'() {\n this.manifest.playlists = uris;\n this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups;\n\n if (!entry.attributes) {\n this.trigger('warn', {\n message: 'ignoring empty stream-inf attributes'\n });\n return;\n }\n\n if (!currentUri.attributes) {\n currentUri.attributes = {};\n }\n\n _extends(currentUri.attributes, entry.attributes);\n },\n\n media() {\n this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups;\n\n if (!(entry.attributes && entry.attributes.TYPE && entry.attributes['GROUP-ID'] && entry.attributes.NAME)) {\n this.trigger('warn', {\n message: 'ignoring incomplete or missing media group'\n });\n return;\n } // find the media group, creating defaults as necessary\n\n\n const mediaGroupType = this.manifest.mediaGroups[entry.attributes.TYPE];\n mediaGroupType[entry.attributes['GROUP-ID']] = mediaGroupType[entry.attributes['GROUP-ID']] || {};\n mediaGroup = mediaGroupType[entry.attributes['GROUP-ID']]; // collect the rendition metadata\n\n rendition = {\n default: /yes/i.test(entry.attributes.DEFAULT)\n };\n\n if (rendition.default) {\n rendition.autoselect = true;\n } else {\n rendition.autoselect = /yes/i.test(entry.attributes.AUTOSELECT);\n }\n\n if (entry.attributes.LANGUAGE) {\n rendition.language = entry.attributes.LANGUAGE;\n }\n\n if (entry.attributes.URI) {\n rendition.uri = entry.attributes.URI;\n }\n\n if (entry.attributes['INSTREAM-ID']) {\n rendition.instreamId = entry.attributes['INSTREAM-ID'];\n }\n\n if (entry.attributes.CHARACTERISTICS) {\n rendition.characteristics = entry.attributes.CHARACTERISTICS;\n }\n\n if (entry.attributes.FORCED) {\n rendition.forced = /yes/i.test(entry.attributes.FORCED);\n } // insert the new rendition\n\n\n mediaGroup[entry.attributes.NAME] = rendition;\n },\n\n discontinuity() {\n currentTimeline += 1;\n currentUri.discontinuity = true;\n this.manifest.discontinuityStarts.push(uris.length);\n },\n\n 'program-date-time'() {\n if (typeof this.manifest.dateTimeString === 'undefined') {\n // PROGRAM-DATE-TIME is a media-segment tag, but for backwards\n // compatibility, we add the first occurence of the PROGRAM-DATE-TIME tag\n // to the manifest object\n // TODO: Consider removing this in future major version\n this.manifest.dateTimeString = entry.dateTimeString;\n this.manifest.dateTimeObject = entry.dateTimeObject;\n }\n\n currentUri.dateTimeString = entry.dateTimeString;\n currentUri.dateTimeObject = entry.dateTimeObject;\n },\n\n targetduration() {\n if (!isFinite(entry.duration) || entry.duration < 0) {\n this.trigger('warn', {\n message: 'ignoring invalid target duration: ' + entry.duration\n });\n return;\n }\n\n this.manifest.targetDuration = entry.duration;\n setHoldBack.call(this, this.manifest);\n },\n\n start() {\n if (!entry.attributes || isNaN(entry.attributes['TIME-OFFSET'])) {\n this.trigger('warn', {\n message: 'ignoring start declaration without appropriate attribute list'\n });\n return;\n }\n\n this.manifest.start = {\n timeOffset: entry.attributes['TIME-OFFSET'],\n precise: entry.attributes.PRECISE\n };\n },\n\n 'cue-out'() {\n currentUri.cueOut = entry.data;\n },\n\n 'cue-out-cont'() {\n currentUri.cueOutCont = entry.data;\n },\n\n 'cue-in'() {\n currentUri.cueIn = entry.data;\n },\n\n 'skip'() {\n this.manifest.skip = camelCaseKeys(entry.attributes);\n this.warnOnMissingAttributes_('#EXT-X-SKIP', entry.attributes, ['SKIPPED-SEGMENTS']);\n },\n\n 'part'() {\n hasParts = true; // parts are always specifed before a segment\n\n const segmentIndex = this.manifest.segments.length;\n const part = camelCaseKeys(entry.attributes);\n currentUri.parts = currentUri.parts || [];\n currentUri.parts.push(part);\n\n if (part.byterange) {\n if (!part.byterange.hasOwnProperty('offset')) {\n part.byterange.offset = lastPartByterangeEnd;\n }\n\n lastPartByterangeEnd = part.byterange.offset + part.byterange.length;\n }\n\n const partIndex = currentUri.parts.length - 1;\n this.warnOnMissingAttributes_(`#EXT-X-PART #${partIndex} for segment #${segmentIndex}`, entry.attributes, ['URI', 'DURATION']);\n\n if (this.manifest.renditionReports) {\n this.manifest.renditionReports.forEach((r, i) => {\n if (!r.hasOwnProperty('lastPart')) {\n this.trigger('warn', {\n message: `#EXT-X-RENDITION-REPORT #${i} lacks required attribute(s): LAST-PART`\n });\n }\n });\n }\n },\n\n 'server-control'() {\n const attrs = this.manifest.serverControl = camelCaseKeys(entry.attributes);\n\n if (!attrs.hasOwnProperty('canBlockReload')) {\n attrs.canBlockReload = false;\n this.trigger('info', {\n message: '#EXT-X-SERVER-CONTROL defaulting CAN-BLOCK-RELOAD to false'\n });\n }\n\n setHoldBack.call(this, this.manifest);\n\n if (attrs.canSkipDateranges && !attrs.hasOwnProperty('canSkipUntil')) {\n this.trigger('warn', {\n message: '#EXT-X-SERVER-CONTROL lacks required attribute CAN-SKIP-UNTIL which is required when CAN-SKIP-DATERANGES is set'\n });\n }\n },\n\n 'preload-hint'() {\n // parts are always specifed before a segment\n const segmentIndex = this.manifest.segments.length;\n const hint = camelCaseKeys(entry.attributes);\n const isPart = hint.type && hint.type === 'PART';\n currentUri.preloadHints = currentUri.preloadHints || [];\n currentUri.preloadHints.push(hint);\n\n if (hint.byterange) {\n if (!hint.byterange.hasOwnProperty('offset')) {\n // use last part byterange end or zero if not a part.\n hint.byterange.offset = isPart ? lastPartByterangeEnd : 0;\n\n if (isPart) {\n lastPartByterangeEnd = hint.byterange.offset + hint.byterange.length;\n }\n }\n }\n\n const index = currentUri.preloadHints.length - 1;\n this.warnOnMissingAttributes_(`#EXT-X-PRELOAD-HINT #${index} for segment #${segmentIndex}`, entry.attributes, ['TYPE', 'URI']);\n\n if (!hint.type) {\n return;\n } // search through all preload hints except for the current one for\n // a duplicate type.\n\n\n for (let i = 0; i < currentUri.preloadHints.length - 1; i++) {\n const otherHint = currentUri.preloadHints[i];\n\n if (!otherHint.type) {\n continue;\n }\n\n if (otherHint.type === hint.type) {\n this.trigger('warn', {\n message: `#EXT-X-PRELOAD-HINT #${index} for segment #${segmentIndex} has the same TYPE ${hint.type} as preload hint #${i}`\n });\n }\n }\n },\n\n 'rendition-report'() {\n const report = camelCaseKeys(entry.attributes);\n this.manifest.renditionReports = this.manifest.renditionReports || [];\n this.manifest.renditionReports.push(report);\n const index = this.manifest.renditionReports.length - 1;\n const required = ['LAST-MSN', 'URI'];\n\n if (hasParts) {\n required.push('LAST-PART');\n }\n\n this.warnOnMissingAttributes_(`#EXT-X-RENDITION-REPORT #${index}`, entry.attributes, required);\n },\n\n 'part-inf'() {\n this.manifest.partInf = camelCaseKeys(entry.attributes);\n this.warnOnMissingAttributes_('#EXT-X-PART-INF', entry.attributes, ['PART-TARGET']);\n\n if (this.manifest.partInf.partTarget) {\n this.manifest.partTargetDuration = this.manifest.partInf.partTarget;\n }\n\n setHoldBack.call(this, this.manifest);\n },\n\n 'daterange'() {\n this.manifest.daterange = this.manifest.daterange || [];\n this.manifest.daterange.push(camelCaseKeys(entry.attributes));\n const index = this.manifest.daterange.length - 1;\n this.warnOnMissingAttributes_(`#EXT-X-DATERANGE #${index}`, entry.attributes, ['ID', 'START-DATE']);\n const daterange = this.manifest.daterange[index];\n\n if (daterange.endDate && daterange.startDate && new Date(daterange.endDate) < new Date(daterange.startDate)) {\n this.trigger('warn', {\n message: 'EXT-X-DATERANGE END-DATE must be equal to or later than the value of the START-DATE'\n });\n }\n\n if (daterange.duration && daterange.duration < 0) {\n this.trigger('warn', {\n message: 'EXT-X-DATERANGE DURATION must not be negative'\n });\n }\n\n if (daterange.plannedDuration && daterange.plannedDuration < 0) {\n this.trigger('warn', {\n message: 'EXT-X-DATERANGE PLANNED-DURATION must not be negative'\n });\n }\n\n const endOnNextYes = !!daterange.endOnNext;\n\n if (endOnNextYes && !daterange.class) {\n this.trigger('warn', {\n message: 'EXT-X-DATERANGE with an END-ON-NEXT=YES attribute must have a CLASS attribute'\n });\n }\n\n if (endOnNextYes && (daterange.duration || daterange.endDate)) {\n this.trigger('warn', {\n message: 'EXT-X-DATERANGE with an END-ON-NEXT=YES attribute must not contain DURATION or END-DATE attributes'\n });\n }\n\n if (daterange.duration && daterange.endDate) {\n const startDate = daterange.startDate;\n const newDateInSeconds = startDate.setSeconds(startDate.getSeconds() + daterange.duration);\n this.manifest.daterange[index].endDate = new Date(newDateInSeconds);\n }\n\n if (daterange && !this.manifest.dateTimeString) {\n this.trigger('warn', {\n message: 'A playlist with EXT-X-DATERANGE tag must contain atleast one EXT-X-PROGRAM-DATE-TIME tag'\n });\n }\n\n if (!daterangeTags[daterange.id]) {\n daterangeTags[daterange.id] = daterange;\n } else {\n for (const attribute in daterangeTags[daterange.id]) {\n if (daterangeTags[daterange.id][attribute] !== daterange[attribute]) {\n this.trigger('warn', {\n message: 'EXT-X-DATERANGE tags with the same ID in a playlist must have the same attributes and same attribute values'\n });\n break;\n }\n }\n }\n },\n\n 'independent-segments'() {\n this.manifest.independentSegments = true;\n }\n\n })[entry.tagType] || noop).call(self);\n },\n\n uri() {\n currentUri.uri = entry.uri;\n uris.push(currentUri); // if no explicit duration was declared, use the target duration\n\n if (this.manifest.targetDuration && !('duration' in currentUri)) {\n this.trigger('warn', {\n message: 'defaulting segment duration to the target duration'\n });\n currentUri.duration = this.manifest.targetDuration;\n } // annotate with encryption information, if necessary\n\n\n if (key) {\n currentUri.key = key;\n }\n\n currentUri.timeline = currentTimeline; // annotate with initialization segment information, if necessary\n\n if (currentMap) {\n currentUri.map = currentMap;\n } // reset the last byterange end as it needs to be 0 between parts\n\n\n lastPartByterangeEnd = 0; // prepare for the next URI\n\n currentUri = {};\n },\n\n comment() {// comments are not important for playback\n },\n\n custom() {\n // if this is segment-level data attach the output to the segment\n if (entry.segment) {\n currentUri.custom = currentUri.custom || {};\n currentUri.custom[entry.customType] = entry.data; // if this is manifest-level data attach to the top level manifest object\n } else {\n this.manifest.custom = this.manifest.custom || {};\n this.manifest.custom[entry.customType] = entry.data;\n }\n }\n\n })[entry.type].call(self);\n });\n }\n\n warnOnMissingAttributes_(identifier, attributes, required) {\n const missing = [];\n required.forEach(function (key) {\n if (!attributes.hasOwnProperty(key)) {\n missing.push(key);\n }\n });\n\n if (missing.length) {\n this.trigger('warn', {\n message: `${identifier} lacks required attribute(s): ${missing.join(', ')}`\n });\n }\n }\n /**\n * Parse the input string and update the manifest object.\n *\n * @param {string} chunk a potentially incomplete portion of the manifest\n */\n\n\n push(chunk) {\n this.lineStream.push(chunk);\n }\n /**\n * Flush any remaining input. This can be handy if the last line of an M3U8\n * manifest did not contain a trailing newline but the file has been\n * completely received.\n */\n\n\n end() {\n // flush any buffered input\n this.lineStream.push('\\n');\n this.trigger('end');\n }\n /**\n * Add an additional parser for non-standard tags\n *\n * @param {Object} options a map of options for the added parser\n * @param {RegExp} options.expression a regular expression to match the custom header\n * @param {string} options.type the type to register to the output\n * @param {Function} [options.dataParser] function to parse the line into an object\n * @param {boolean} [options.segment] should tag data be attached to the segment object\n */\n\n\n addParser(options) {\n this.parseStream.addParser(options);\n }\n /**\n * Add a custom header mapper\n *\n * @param {Object} options\n * @param {RegExp} options.expression a regular expression to match the custom header\n * @param {Function} options.map function to translate tag into a different tag\n */\n\n\n addTagMapper(options) {\n this.parseStream.addTagMapper(options);\n }\n\n}\n\nexport { LineStream, ParseStream, Parser };\n","/*! @name mpd-parser @version 1.2.2 @license Apache-2.0 */\nimport resolveUrl from '@videojs/vhs-utils/es/resolve-url';\nimport window from 'global/window';\nimport { forEachMediaGroup } from '@videojs/vhs-utils/es/media-groups';\nimport decodeB64ToUint8Array from '@videojs/vhs-utils/es/decode-b64-to-uint8-array';\nimport { DOMParser } from '@xmldom/xmldom';\n\nvar version = \"1.2.2\";\n\nconst isObject = obj => {\n return !!obj && typeof obj === 'object';\n};\n\nconst merge = (...objects) => {\n return objects.reduce((result, source) => {\n if (typeof source !== 'object') {\n return result;\n }\n\n Object.keys(source).forEach(key => {\n if (Array.isArray(result[key]) && Array.isArray(source[key])) {\n result[key] = result[key].concat(source[key]);\n } else if (isObject(result[key]) && isObject(source[key])) {\n result[key] = merge(result[key], source[key]);\n } else {\n result[key] = source[key];\n }\n });\n return result;\n }, {});\n};\nconst values = o => Object.keys(o).map(k => o[k]);\n\nconst range = (start, end) => {\n const result = [];\n\n for (let i = start; i < end; i++) {\n result.push(i);\n }\n\n return result;\n};\nconst flatten = lists => lists.reduce((x, y) => x.concat(y), []);\nconst from = list => {\n if (!list.length) {\n return [];\n }\n\n const result = [];\n\n for (let i = 0; i < list.length; i++) {\n result.push(list[i]);\n }\n\n return result;\n};\nconst findIndexes = (l, key) => l.reduce((a, e, i) => {\n if (e[key]) {\n a.push(i);\n }\n\n return a;\n}, []);\n/**\n * Returns a union of the included lists provided each element can be identified by a key.\n *\n * @param {Array} list - list of lists to get the union of\n * @param {Function} keyFunction - the function to use as a key for each element\n *\n * @return {Array} the union of the arrays\n */\n\nconst union = (lists, keyFunction) => {\n return values(lists.reduce((acc, list) => {\n list.forEach(el => {\n acc[keyFunction(el)] = el;\n });\n return acc;\n }, {}));\n};\n\nvar errors = {\n INVALID_NUMBER_OF_PERIOD: 'INVALID_NUMBER_OF_PERIOD',\n INVALID_NUMBER_OF_CONTENT_STEERING: 'INVALID_NUMBER_OF_CONTENT_STEERING',\n DASH_EMPTY_MANIFEST: 'DASH_EMPTY_MANIFEST',\n DASH_INVALID_XML: 'DASH_INVALID_XML',\n NO_BASE_URL: 'NO_BASE_URL',\n MISSING_SEGMENT_INFORMATION: 'MISSING_SEGMENT_INFORMATION',\n SEGMENT_TIME_UNSPECIFIED: 'SEGMENT_TIME_UNSPECIFIED',\n UNSUPPORTED_UTC_TIMING_SCHEME: 'UNSUPPORTED_UTC_TIMING_SCHEME'\n};\n\n/**\n * @typedef {Object} SingleUri\n * @property {string} uri - relative location of segment\n * @property {string} resolvedUri - resolved location of segment\n * @property {Object} byterange - Object containing information on how to make byte range\n * requests following byte-range-spec per RFC2616.\n * @property {String} byterange.length - length of range request\n * @property {String} byterange.offset - byte offset of range request\n *\n * @see https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35.1\n */\n\n/**\n * Converts a URLType node (5.3.9.2.3 Table 13) to a segment object\n * that conforms to how m3u8-parser is structured\n *\n * @see https://github.com/videojs/m3u8-parser\n *\n * @param {string} baseUrl - baseUrl provided by nodes\n * @param {string} source - source url for segment\n * @param {string} range - optional range used for range calls,\n * follows RFC 2616, Clause 14.35.1\n * @return {SingleUri} full segment information transformed into a format similar\n * to m3u8-parser\n */\n\nconst urlTypeToSegment = ({\n baseUrl = '',\n source = '',\n range = '',\n indexRange = ''\n}) => {\n const segment = {\n uri: source,\n resolvedUri: resolveUrl(baseUrl || '', source)\n };\n\n if (range || indexRange) {\n const rangeStr = range ? range : indexRange;\n const ranges = rangeStr.split('-'); // default to parsing this as a BigInt if possible\n\n let startRange = window.BigInt ? window.BigInt(ranges[0]) : parseInt(ranges[0], 10);\n let endRange = window.BigInt ? window.BigInt(ranges[1]) : parseInt(ranges[1], 10); // convert back to a number if less than MAX_SAFE_INTEGER\n\n if (startRange < Number.MAX_SAFE_INTEGER && typeof startRange === 'bigint') {\n startRange = Number(startRange);\n }\n\n if (endRange < Number.MAX_SAFE_INTEGER && typeof endRange === 'bigint') {\n endRange = Number(endRange);\n }\n\n let length;\n\n if (typeof endRange === 'bigint' || typeof startRange === 'bigint') {\n length = window.BigInt(endRange) - window.BigInt(startRange) + window.BigInt(1);\n } else {\n length = endRange - startRange + 1;\n }\n\n if (typeof length === 'bigint' && length < Number.MAX_SAFE_INTEGER) {\n length = Number(length);\n } // byterange should be inclusive according to\n // RFC 2616, Clause 14.35.1\n\n\n segment.byterange = {\n length,\n offset: startRange\n };\n }\n\n return segment;\n};\nconst byteRangeToString = byterange => {\n // `endRange` is one less than `offset + length` because the HTTP range\n // header uses inclusive ranges\n let endRange;\n\n if (typeof byterange.offset === 'bigint' || typeof byterange.length === 'bigint') {\n endRange = window.BigInt(byterange.offset) + window.BigInt(byterange.length) - window.BigInt(1);\n } else {\n endRange = byterange.offset + byterange.length - 1;\n }\n\n return `${byterange.offset}-${endRange}`;\n};\n\n/**\n * parse the end number attribue that can be a string\n * number, or undefined.\n *\n * @param {string|number|undefined} endNumber\n * The end number attribute.\n *\n * @return {number|null}\n * The result of parsing the end number.\n */\n\nconst parseEndNumber = endNumber => {\n if (endNumber && typeof endNumber !== 'number') {\n endNumber = parseInt(endNumber, 10);\n }\n\n if (isNaN(endNumber)) {\n return null;\n }\n\n return endNumber;\n};\n/**\n * Functions for calculating the range of available segments in static and dynamic\n * manifests.\n */\n\n\nconst segmentRange = {\n /**\n * Returns the entire range of available segments for a static MPD\n *\n * @param {Object} attributes\n * Inheritied MPD attributes\n * @return {{ start: number, end: number }}\n * The start and end numbers for available segments\n */\n static(attributes) {\n const {\n duration,\n timescale = 1,\n sourceDuration,\n periodDuration\n } = attributes;\n const endNumber = parseEndNumber(attributes.endNumber);\n const segmentDuration = duration / timescale;\n\n if (typeof endNumber === 'number') {\n return {\n start: 0,\n end: endNumber\n };\n }\n\n if (typeof periodDuration === 'number') {\n return {\n start: 0,\n end: periodDuration / segmentDuration\n };\n }\n\n return {\n start: 0,\n end: sourceDuration / segmentDuration\n };\n },\n\n /**\n * Returns the current live window range of available segments for a dynamic MPD\n *\n * @param {Object} attributes\n * Inheritied MPD attributes\n * @return {{ start: number, end: number }}\n * The start and end numbers for available segments\n */\n dynamic(attributes) {\n const {\n NOW,\n clientOffset,\n availabilityStartTime,\n timescale = 1,\n duration,\n periodStart = 0,\n minimumUpdatePeriod = 0,\n timeShiftBufferDepth = Infinity\n } = attributes;\n const endNumber = parseEndNumber(attributes.endNumber); // clientOffset is passed in at the top level of mpd-parser and is an offset calculated\n // after retrieving UTC server time.\n\n const now = (NOW + clientOffset) / 1000; // WC stands for Wall Clock.\n // Convert the period start time to EPOCH.\n\n const periodStartWC = availabilityStartTime + periodStart; // Period end in EPOCH is manifest's retrieval time + time until next update.\n\n const periodEndWC = now + minimumUpdatePeriod;\n const periodDuration = periodEndWC - periodStartWC;\n const segmentCount = Math.ceil(periodDuration * timescale / duration);\n const availableStart = Math.floor((now - periodStartWC - timeShiftBufferDepth) * timescale / duration);\n const availableEnd = Math.floor((now - periodStartWC) * timescale / duration);\n return {\n start: Math.max(0, availableStart),\n end: typeof endNumber === 'number' ? endNumber : Math.min(segmentCount, availableEnd)\n };\n }\n\n};\n/**\n * Maps a range of numbers to objects with information needed to build the corresponding\n * segment list\n *\n * @name toSegmentsCallback\n * @function\n * @param {number} number\n * Number of the segment\n * @param {number} index\n * Index of the number in the range list\n * @return {{ number: Number, duration: Number, timeline: Number, time: Number }}\n * Object with segment timing and duration info\n */\n\n/**\n * Returns a callback for Array.prototype.map for mapping a range of numbers to\n * information needed to build the segment list.\n *\n * @param {Object} attributes\n * Inherited MPD attributes\n * @return {toSegmentsCallback}\n * Callback map function\n */\n\nconst toSegments = attributes => number => {\n const {\n duration,\n timescale = 1,\n periodStart,\n startNumber = 1\n } = attributes;\n return {\n number: startNumber + number,\n duration: duration / timescale,\n timeline: periodStart,\n time: number * duration\n };\n};\n/**\n * Returns a list of objects containing segment timing and duration info used for\n * building the list of segments. This uses the @duration attribute specified\n * in the MPD manifest to derive the range of segments.\n *\n * @param {Object} attributes\n * Inherited MPD attributes\n * @return {{number: number, duration: number, time: number, timeline: number}[]}\n * List of Objects with segment timing and duration info\n */\n\nconst parseByDuration = attributes => {\n const {\n type,\n duration,\n timescale = 1,\n periodDuration,\n sourceDuration\n } = attributes;\n const {\n start,\n end\n } = segmentRange[type](attributes);\n const segments = range(start, end).map(toSegments(attributes));\n\n if (type === 'static') {\n const index = segments.length - 1; // section is either a period or the full source\n\n const sectionDuration = typeof periodDuration === 'number' ? periodDuration : sourceDuration; // final segment may be less than full segment duration\n\n segments[index].duration = sectionDuration - duration / timescale * index;\n }\n\n return segments;\n};\n\n/**\n * Translates SegmentBase into a set of segments.\n * (DASH SPEC Section 5.3.9.3.2) contains a set of nodes. Each\n * node should be translated into segment.\n *\n * @param {Object} attributes\n * Object containing all inherited attributes from parent elements with attribute\n * names as keys\n * @return {Object.} list of segments\n */\n\nconst segmentsFromBase = attributes => {\n const {\n baseUrl,\n initialization = {},\n sourceDuration,\n indexRange = '',\n periodStart,\n presentationTime,\n number = 0,\n duration\n } = attributes; // base url is required for SegmentBase to work, per spec (Section 5.3.9.2.1)\n\n if (!baseUrl) {\n throw new Error(errors.NO_BASE_URL);\n }\n\n const initSegment = urlTypeToSegment({\n baseUrl,\n source: initialization.sourceURL,\n range: initialization.range\n });\n const segment = urlTypeToSegment({\n baseUrl,\n source: baseUrl,\n indexRange\n });\n segment.map = initSegment; // If there is a duration, use it, otherwise use the given duration of the source\n // (since SegmentBase is only for one total segment)\n\n if (duration) {\n const segmentTimeInfo = parseByDuration(attributes);\n\n if (segmentTimeInfo.length) {\n segment.duration = segmentTimeInfo[0].duration;\n segment.timeline = segmentTimeInfo[0].timeline;\n }\n } else if (sourceDuration) {\n segment.duration = sourceDuration;\n segment.timeline = periodStart;\n } // If presentation time is provided, these segments are being generated by SIDX\n // references, and should use the time provided. For the general case of SegmentBase,\n // there should only be one segment in the period, so its presentation time is the same\n // as its period start.\n\n\n segment.presentationTime = presentationTime || periodStart;\n segment.number = number;\n return [segment];\n};\n/**\n * Given a playlist, a sidx box, and a baseUrl, update the segment list of the playlist\n * according to the sidx information given.\n *\n * playlist.sidx has metadadata about the sidx where-as the sidx param\n * is the parsed sidx box itself.\n *\n * @param {Object} playlist the playlist to update the sidx information for\n * @param {Object} sidx the parsed sidx box\n * @return {Object} the playlist object with the updated sidx information\n */\n\nconst addSidxSegmentsToPlaylist$1 = (playlist, sidx, baseUrl) => {\n // Retain init segment information\n const initSegment = playlist.sidx.map ? playlist.sidx.map : null; // Retain source duration from initial main manifest parsing\n\n const sourceDuration = playlist.sidx.duration; // Retain source timeline\n\n const timeline = playlist.timeline || 0;\n const sidxByteRange = playlist.sidx.byterange;\n const sidxEnd = sidxByteRange.offset + sidxByteRange.length; // Retain timescale of the parsed sidx\n\n const timescale = sidx.timescale; // referenceType 1 refers to other sidx boxes\n\n const mediaReferences = sidx.references.filter(r => r.referenceType !== 1);\n const segments = [];\n const type = playlist.endList ? 'static' : 'dynamic';\n const periodStart = playlist.sidx.timeline;\n let presentationTime = periodStart;\n let number = playlist.mediaSequence || 0; // firstOffset is the offset from the end of the sidx box\n\n let startIndex; // eslint-disable-next-line\n\n if (typeof sidx.firstOffset === 'bigint') {\n startIndex = window.BigInt(sidxEnd) + sidx.firstOffset;\n } else {\n startIndex = sidxEnd + sidx.firstOffset;\n }\n\n for (let i = 0; i < mediaReferences.length; i++) {\n const reference = sidx.references[i]; // size of the referenced (sub)segment\n\n const size = reference.referencedSize; // duration of the referenced (sub)segment, in the timescale\n // this will be converted to seconds when generating segments\n\n const duration = reference.subsegmentDuration; // should be an inclusive range\n\n let endIndex; // eslint-disable-next-line\n\n if (typeof startIndex === 'bigint') {\n endIndex = startIndex + window.BigInt(size) - window.BigInt(1);\n } else {\n endIndex = startIndex + size - 1;\n }\n\n const indexRange = `${startIndex}-${endIndex}`;\n const attributes = {\n baseUrl,\n timescale,\n timeline,\n periodStart,\n presentationTime,\n number,\n duration,\n sourceDuration,\n indexRange,\n type\n };\n const segment = segmentsFromBase(attributes)[0];\n\n if (initSegment) {\n segment.map = initSegment;\n }\n\n segments.push(segment);\n\n if (typeof startIndex === 'bigint') {\n startIndex += window.BigInt(size);\n } else {\n startIndex += size;\n }\n\n presentationTime += duration / timescale;\n number++;\n }\n\n playlist.segments = segments;\n return playlist;\n};\n\nconst SUPPORTED_MEDIA_TYPES = ['AUDIO', 'SUBTITLES']; // allow one 60fps frame as leniency (arbitrarily chosen)\n\nconst TIME_FUDGE = 1 / 60;\n/**\n * Given a list of timelineStarts, combines, dedupes, and sorts them.\n *\n * @param {TimelineStart[]} timelineStarts - list of timeline starts\n *\n * @return {TimelineStart[]} the combined and deduped timeline starts\n */\n\nconst getUniqueTimelineStarts = timelineStarts => {\n return union(timelineStarts, ({\n timeline\n }) => timeline).sort((a, b) => a.timeline > b.timeline ? 1 : -1);\n};\n/**\n * Finds the playlist with the matching NAME attribute.\n *\n * @param {Array} playlists - playlists to search through\n * @param {string} name - the NAME attribute to search for\n *\n * @return {Object|null} the matching playlist object, or null\n */\n\nconst findPlaylistWithName = (playlists, name) => {\n for (let i = 0; i < playlists.length; i++) {\n if (playlists[i].attributes.NAME === name) {\n return playlists[i];\n }\n }\n\n return null;\n};\n/**\n * Gets a flattened array of media group playlists.\n *\n * @param {Object} manifest - the main manifest object\n *\n * @return {Array} the media group playlists\n */\n\nconst getMediaGroupPlaylists = manifest => {\n let mediaGroupPlaylists = [];\n forEachMediaGroup(manifest, SUPPORTED_MEDIA_TYPES, (properties, type, group, label) => {\n mediaGroupPlaylists = mediaGroupPlaylists.concat(properties.playlists || []);\n });\n return mediaGroupPlaylists;\n};\n/**\n * Updates the playlist's media sequence numbers.\n *\n * @param {Object} config - options object\n * @param {Object} config.playlist - the playlist to update\n * @param {number} config.mediaSequence - the mediaSequence number to start with\n */\n\nconst updateMediaSequenceForPlaylist = ({\n playlist,\n mediaSequence\n}) => {\n playlist.mediaSequence = mediaSequence;\n playlist.segments.forEach((segment, index) => {\n segment.number = playlist.mediaSequence + index;\n });\n};\n/**\n * Updates the media and discontinuity sequence numbers of newPlaylists given oldPlaylists\n * and a complete list of timeline starts.\n *\n * If no matching playlist is found, only the discontinuity sequence number of the playlist\n * will be updated.\n *\n * Since early available timelines are not supported, at least one segment must be present.\n *\n * @param {Object} config - options object\n * @param {Object[]} oldPlaylists - the old playlists to use as a reference\n * @param {Object[]} newPlaylists - the new playlists to update\n * @param {Object} timelineStarts - all timelineStarts seen in the stream to this point\n */\n\nconst updateSequenceNumbers = ({\n oldPlaylists,\n newPlaylists,\n timelineStarts\n}) => {\n newPlaylists.forEach(playlist => {\n playlist.discontinuitySequence = timelineStarts.findIndex(function ({\n timeline\n }) {\n return timeline === playlist.timeline;\n }); // Playlists NAMEs come from DASH Representation IDs, which are mandatory\n // (see ISO_23009-1-2012 5.3.5.2).\n //\n // If the same Representation existed in a prior Period, it will retain the same NAME.\n\n const oldPlaylist = findPlaylistWithName(oldPlaylists, playlist.attributes.NAME);\n\n if (!oldPlaylist) {\n // Since this is a new playlist, the media sequence values can start from 0 without\n // consequence.\n return;\n } // TODO better support for live SIDX\n //\n // As of this writing, mpd-parser does not support multiperiod SIDX (in live or VOD).\n // This is evident by a playlist only having a single SIDX reference. In a multiperiod\n // playlist there would need to be multiple SIDX references. In addition, live SIDX is\n // not supported when the SIDX properties change on refreshes.\n //\n // In the future, if support needs to be added, the merging logic here can be called\n // after SIDX references are resolved. For now, exit early to prevent exceptions being\n // thrown due to undefined references.\n\n\n if (playlist.sidx) {\n return;\n } // Since we don't yet support early available timelines, we don't need to support\n // playlists with no segments.\n\n\n const firstNewSegment = playlist.segments[0];\n const oldMatchingSegmentIndex = oldPlaylist.segments.findIndex(function (oldSegment) {\n return Math.abs(oldSegment.presentationTime - firstNewSegment.presentationTime) < TIME_FUDGE;\n }); // No matching segment from the old playlist means the entire playlist was refreshed.\n // In this case the media sequence should account for this update, and the new segments\n // should be marked as discontinuous from the prior content, since the last prior\n // timeline was removed.\n\n if (oldMatchingSegmentIndex === -1) {\n updateMediaSequenceForPlaylist({\n playlist,\n mediaSequence: oldPlaylist.mediaSequence + oldPlaylist.segments.length\n });\n playlist.segments[0].discontinuity = true;\n playlist.discontinuityStarts.unshift(0); // No matching segment does not necessarily mean there's missing content.\n //\n // If the new playlist's timeline is the same as the last seen segment's timeline,\n // then a discontinuity can be added to identify that there's potentially missing\n // content. If there's no missing content, the discontinuity should still be rather\n // harmless. It's possible that if segment durations are accurate enough, that the\n // existence of a gap can be determined using the presentation times and durations,\n // but if the segment timing info is off, it may introduce more problems than simply\n // adding the discontinuity.\n //\n // If the new playlist's timeline is different from the last seen segment's timeline,\n // then a discontinuity can be added to identify that this is the first seen segment\n // of a new timeline. However, the logic at the start of this function that\n // determined the disconinuity sequence by timeline index is now off by one (the\n // discontinuity of the newest timeline hasn't yet fallen off the manifest...since\n // we added it), so the disconinuity sequence must be decremented.\n //\n // A period may also have a duration of zero, so the case of no segments is handled\n // here even though we don't yet support early available periods.\n\n if (!oldPlaylist.segments.length && playlist.timeline > oldPlaylist.timeline || oldPlaylist.segments.length && playlist.timeline > oldPlaylist.segments[oldPlaylist.segments.length - 1].timeline) {\n playlist.discontinuitySequence--;\n }\n\n return;\n } // If the first segment matched with a prior segment on a discontinuity (it's matching\n // on the first segment of a period), then the discontinuitySequence shouldn't be the\n // timeline's matching one, but instead should be the one prior, and the first segment\n // of the new manifest should be marked with a discontinuity.\n //\n // The reason for this special case is that discontinuity sequence shows how many\n // discontinuities have fallen off of the playlist, and discontinuities are marked on\n // the first segment of a new \"timeline.\" Because of this, while DASH will retain that\n // Period while the \"timeline\" exists, HLS keeps track of it via the discontinuity\n // sequence, and that first segment is an indicator, but can be removed before that\n // timeline is gone.\n\n\n const oldMatchingSegment = oldPlaylist.segments[oldMatchingSegmentIndex];\n\n if (oldMatchingSegment.discontinuity && !firstNewSegment.discontinuity) {\n firstNewSegment.discontinuity = true;\n playlist.discontinuityStarts.unshift(0);\n playlist.discontinuitySequence--;\n }\n\n updateMediaSequenceForPlaylist({\n playlist,\n mediaSequence: oldPlaylist.segments[oldMatchingSegmentIndex].number\n });\n });\n};\n/**\n * Given an old parsed manifest object and a new parsed manifest object, updates the\n * sequence and timing values within the new manifest to ensure that it lines up with the\n * old.\n *\n * @param {Array} oldManifest - the old main manifest object\n * @param {Array} newManifest - the new main manifest object\n *\n * @return {Object} the updated new manifest object\n */\n\nconst positionManifestOnTimeline = ({\n oldManifest,\n newManifest\n}) => {\n // Starting from v4.1.2 of the IOP, section 4.4.3.3 states:\n //\n // \"MPD@availabilityStartTime and Period@start shall not be changed over MPD updates.\"\n //\n // This was added from https://github.com/Dash-Industry-Forum/DASH-IF-IOP/issues/160\n //\n // Because of this change, and the difficulty of supporting periods with changing start\n // times, periods with changing start times are not supported. This makes the logic much\n // simpler, since periods with the same start time can be considerred the same period\n // across refreshes.\n //\n // To give an example as to the difficulty of handling periods where the start time may\n // change, if a single period manifest is refreshed with another manifest with a single\n // period, and both the start and end times are increased, then the only way to determine\n // if it's a new period or an old one that has changed is to look through the segments of\n // each playlist and determine the presentation time bounds to find a match. In addition,\n // if the period start changed to exceed the old period end, then there would be no\n // match, and it would not be possible to determine whether the refreshed period is a new\n // one or the old one.\n const oldPlaylists = oldManifest.playlists.concat(getMediaGroupPlaylists(oldManifest));\n const newPlaylists = newManifest.playlists.concat(getMediaGroupPlaylists(newManifest)); // Save all seen timelineStarts to the new manifest. Although this potentially means that\n // there's a \"memory leak\" in that it will never stop growing, in reality, only a couple\n // of properties are saved for each seen Period. Even long running live streams won't\n // generate too many Periods, unless the stream is watched for decades. In the future,\n // this can be optimized by mapping to discontinuity sequence numbers for each timeline,\n // but it may not become an issue, and the additional info can be useful for debugging.\n\n newManifest.timelineStarts = getUniqueTimelineStarts([oldManifest.timelineStarts, newManifest.timelineStarts]);\n updateSequenceNumbers({\n oldPlaylists,\n newPlaylists,\n timelineStarts: newManifest.timelineStarts\n });\n return newManifest;\n};\n\nconst generateSidxKey = sidx => sidx && sidx.uri + '-' + byteRangeToString(sidx.byterange);\n\nconst mergeDiscontiguousPlaylists = playlists => {\n // Break out playlists into groups based on their baseUrl\n const playlistsByBaseUrl = playlists.reduce(function (acc, cur) {\n if (!acc[cur.attributes.baseUrl]) {\n acc[cur.attributes.baseUrl] = [];\n }\n\n acc[cur.attributes.baseUrl].push(cur);\n return acc;\n }, {});\n let allPlaylists = [];\n Object.values(playlistsByBaseUrl).forEach(playlistGroup => {\n const mergedPlaylists = values(playlistGroup.reduce((acc, playlist) => {\n // assuming playlist IDs are the same across periods\n // TODO: handle multiperiod where representation sets are not the same\n // across periods\n const name = playlist.attributes.id + (playlist.attributes.lang || '');\n\n if (!acc[name]) {\n // First Period\n acc[name] = playlist;\n acc[name].attributes.timelineStarts = [];\n } else {\n // Subsequent Periods\n if (playlist.segments) {\n // first segment of subsequent periods signal a discontinuity\n if (playlist.segments[0]) {\n playlist.segments[0].discontinuity = true;\n }\n\n acc[name].segments.push(...playlist.segments);\n } // bubble up contentProtection, this assumes all DRM content\n // has the same contentProtection\n\n\n if (playlist.attributes.contentProtection) {\n acc[name].attributes.contentProtection = playlist.attributes.contentProtection;\n }\n }\n\n acc[name].attributes.timelineStarts.push({\n // Although they represent the same number, it's important to have both to make it\n // compatible with HLS potentially having a similar attribute.\n start: playlist.attributes.periodStart,\n timeline: playlist.attributes.periodStart\n });\n return acc;\n }, {}));\n allPlaylists = allPlaylists.concat(mergedPlaylists);\n });\n return allPlaylists.map(playlist => {\n playlist.discontinuityStarts = findIndexes(playlist.segments || [], 'discontinuity');\n return playlist;\n });\n};\n\nconst addSidxSegmentsToPlaylist = (playlist, sidxMapping) => {\n const sidxKey = generateSidxKey(playlist.sidx);\n const sidxMatch = sidxKey && sidxMapping[sidxKey] && sidxMapping[sidxKey].sidx;\n\n if (sidxMatch) {\n addSidxSegmentsToPlaylist$1(playlist, sidxMatch, playlist.sidx.resolvedUri);\n }\n\n return playlist;\n};\nconst addSidxSegmentsToPlaylists = (playlists, sidxMapping = {}) => {\n if (!Object.keys(sidxMapping).length) {\n return playlists;\n }\n\n for (const i in playlists) {\n playlists[i] = addSidxSegmentsToPlaylist(playlists[i], sidxMapping);\n }\n\n return playlists;\n};\nconst formatAudioPlaylist = ({\n attributes,\n segments,\n sidx,\n mediaSequence,\n discontinuitySequence,\n discontinuityStarts\n}, isAudioOnly) => {\n const playlist = {\n attributes: {\n NAME: attributes.id,\n BANDWIDTH: attributes.bandwidth,\n CODECS: attributes.codecs,\n ['PROGRAM-ID']: 1\n },\n uri: '',\n endList: attributes.type === 'static',\n timeline: attributes.periodStart,\n resolvedUri: attributes.baseUrl || '',\n targetDuration: attributes.duration,\n discontinuitySequence,\n discontinuityStarts,\n timelineStarts: attributes.timelineStarts,\n mediaSequence,\n segments\n };\n\n if (attributes.contentProtection) {\n playlist.contentProtection = attributes.contentProtection;\n }\n\n if (attributes.serviceLocation) {\n playlist.attributes.serviceLocation = attributes.serviceLocation;\n }\n\n if (sidx) {\n playlist.sidx = sidx;\n }\n\n if (isAudioOnly) {\n playlist.attributes.AUDIO = 'audio';\n playlist.attributes.SUBTITLES = 'subs';\n }\n\n return playlist;\n};\nconst formatVttPlaylist = ({\n attributes,\n segments,\n mediaSequence,\n discontinuityStarts,\n discontinuitySequence\n}) => {\n if (typeof segments === 'undefined') {\n // vtt tracks may use single file in BaseURL\n segments = [{\n uri: attributes.baseUrl,\n timeline: attributes.periodStart,\n resolvedUri: attributes.baseUrl || '',\n duration: attributes.sourceDuration,\n number: 0\n }]; // targetDuration should be the same duration as the only segment\n\n attributes.duration = attributes.sourceDuration;\n }\n\n const m3u8Attributes = {\n NAME: attributes.id,\n BANDWIDTH: attributes.bandwidth,\n ['PROGRAM-ID']: 1\n };\n\n if (attributes.codecs) {\n m3u8Attributes.CODECS = attributes.codecs;\n }\n\n const vttPlaylist = {\n attributes: m3u8Attributes,\n uri: '',\n endList: attributes.type === 'static',\n timeline: attributes.periodStart,\n resolvedUri: attributes.baseUrl || '',\n targetDuration: attributes.duration,\n timelineStarts: attributes.timelineStarts,\n discontinuityStarts,\n discontinuitySequence,\n mediaSequence,\n segments\n };\n\n if (attributes.serviceLocation) {\n vttPlaylist.attributes.serviceLocation = attributes.serviceLocation;\n }\n\n return vttPlaylist;\n};\nconst organizeAudioPlaylists = (playlists, sidxMapping = {}, isAudioOnly = false) => {\n let mainPlaylist;\n const formattedPlaylists = playlists.reduce((a, playlist) => {\n const role = playlist.attributes.role && playlist.attributes.role.value || '';\n const language = playlist.attributes.lang || '';\n let label = playlist.attributes.label || 'main';\n\n if (language && !playlist.attributes.label) {\n const roleLabel = role ? ` (${role})` : '';\n label = `${playlist.attributes.lang}${roleLabel}`;\n }\n\n if (!a[label]) {\n a[label] = {\n language,\n autoselect: true,\n default: role === 'main',\n playlists: [],\n uri: ''\n };\n }\n\n const formatted = addSidxSegmentsToPlaylist(formatAudioPlaylist(playlist, isAudioOnly), sidxMapping);\n a[label].playlists.push(formatted);\n\n if (typeof mainPlaylist === 'undefined' && role === 'main') {\n mainPlaylist = playlist;\n mainPlaylist.default = true;\n }\n\n return a;\n }, {}); // if no playlists have role \"main\", mark the first as main\n\n if (!mainPlaylist) {\n const firstLabel = Object.keys(formattedPlaylists)[0];\n formattedPlaylists[firstLabel].default = true;\n }\n\n return formattedPlaylists;\n};\nconst organizeVttPlaylists = (playlists, sidxMapping = {}) => {\n return playlists.reduce((a, playlist) => {\n const label = playlist.attributes.label || playlist.attributes.lang || 'text';\n\n if (!a[label]) {\n a[label] = {\n language: label,\n default: false,\n autoselect: false,\n playlists: [],\n uri: ''\n };\n }\n\n a[label].playlists.push(addSidxSegmentsToPlaylist(formatVttPlaylist(playlist), sidxMapping));\n return a;\n }, {});\n};\n\nconst organizeCaptionServices = captionServices => captionServices.reduce((svcObj, svc) => {\n if (!svc) {\n return svcObj;\n }\n\n svc.forEach(service => {\n const {\n channel,\n language\n } = service;\n svcObj[language] = {\n autoselect: false,\n default: false,\n instreamId: channel,\n language\n };\n\n if (service.hasOwnProperty('aspectRatio')) {\n svcObj[language].aspectRatio = service.aspectRatio;\n }\n\n if (service.hasOwnProperty('easyReader')) {\n svcObj[language].easyReader = service.easyReader;\n }\n\n if (service.hasOwnProperty('3D')) {\n svcObj[language]['3D'] = service['3D'];\n }\n });\n return svcObj;\n}, {});\n\nconst formatVideoPlaylist = ({\n attributes,\n segments,\n sidx,\n discontinuityStarts\n}) => {\n const playlist = {\n attributes: {\n NAME: attributes.id,\n AUDIO: 'audio',\n SUBTITLES: 'subs',\n RESOLUTION: {\n width: attributes.width,\n height: attributes.height\n },\n CODECS: attributes.codecs,\n BANDWIDTH: attributes.bandwidth,\n ['PROGRAM-ID']: 1\n },\n uri: '',\n endList: attributes.type === 'static',\n timeline: attributes.periodStart,\n resolvedUri: attributes.baseUrl || '',\n targetDuration: attributes.duration,\n discontinuityStarts,\n timelineStarts: attributes.timelineStarts,\n segments\n };\n\n if (attributes.frameRate) {\n playlist.attributes['FRAME-RATE'] = attributes.frameRate;\n }\n\n if (attributes.contentProtection) {\n playlist.contentProtection = attributes.contentProtection;\n }\n\n if (attributes.serviceLocation) {\n playlist.attributes.serviceLocation = attributes.serviceLocation;\n }\n\n if (sidx) {\n playlist.sidx = sidx;\n }\n\n return playlist;\n};\n\nconst videoOnly = ({\n attributes\n}) => attributes.mimeType === 'video/mp4' || attributes.mimeType === 'video/webm' || attributes.contentType === 'video';\n\nconst audioOnly = ({\n attributes\n}) => attributes.mimeType === 'audio/mp4' || attributes.mimeType === 'audio/webm' || attributes.contentType === 'audio';\n\nconst vttOnly = ({\n attributes\n}) => attributes.mimeType === 'text/vtt' || attributes.contentType === 'text';\n/**\n * Contains start and timeline properties denoting a timeline start. For DASH, these will\n * be the same number.\n *\n * @typedef {Object} TimelineStart\n * @property {number} start - the start time of the timeline\n * @property {number} timeline - the timeline number\n */\n\n/**\n * Adds appropriate media and discontinuity sequence values to the segments and playlists.\n *\n * Throughout mpd-parser, the `number` attribute is used in relation to `startNumber`, a\n * DASH specific attribute used in constructing segment URI's from templates. However, from\n * an HLS perspective, the `number` attribute on a segment would be its `mediaSequence`\n * value, which should start at the original media sequence value (or 0) and increment by 1\n * for each segment thereafter. Since DASH's `startNumber` values are independent per\n * period, it doesn't make sense to use it for `number`. Instead, assume everything starts\n * from a 0 mediaSequence value and increment from there.\n *\n * Note that VHS currently doesn't use the `number` property, but it can be helpful for\n * debugging and making sense of the manifest.\n *\n * For live playlists, to account for values increasing in manifests when periods are\n * removed on refreshes, merging logic should be used to update the numbers to their\n * appropriate values (to ensure they're sequential and increasing).\n *\n * @param {Object[]} playlists - the playlists to update\n * @param {TimelineStart[]} timelineStarts - the timeline starts for the manifest\n */\n\n\nconst addMediaSequenceValues = (playlists, timelineStarts) => {\n // increment all segments sequentially\n playlists.forEach(playlist => {\n playlist.mediaSequence = 0;\n playlist.discontinuitySequence = timelineStarts.findIndex(function ({\n timeline\n }) {\n return timeline === playlist.timeline;\n });\n\n if (!playlist.segments) {\n return;\n }\n\n playlist.segments.forEach((segment, index) => {\n segment.number = index;\n });\n });\n};\n/**\n * Given a media group object, flattens all playlists within the media group into a single\n * array.\n *\n * @param {Object} mediaGroupObject - the media group object\n *\n * @return {Object[]}\n * The media group playlists\n */\n\nconst flattenMediaGroupPlaylists = mediaGroupObject => {\n if (!mediaGroupObject) {\n return [];\n }\n\n return Object.keys(mediaGroupObject).reduce((acc, label) => {\n const labelContents = mediaGroupObject[label];\n return acc.concat(labelContents.playlists);\n }, []);\n};\nconst toM3u8 = ({\n dashPlaylists,\n locations,\n contentSteering,\n sidxMapping = {},\n previousManifest,\n eventStream\n}) => {\n if (!dashPlaylists.length) {\n return {};\n } // grab all main manifest attributes\n\n\n const {\n sourceDuration: duration,\n type,\n suggestedPresentationDelay,\n minimumUpdatePeriod\n } = dashPlaylists[0].attributes;\n const videoPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(videoOnly)).map(formatVideoPlaylist);\n const audioPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(audioOnly));\n const vttPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(vttOnly));\n const captions = dashPlaylists.map(playlist => playlist.attributes.captionServices).filter(Boolean);\n const manifest = {\n allowCache: true,\n discontinuityStarts: [],\n segments: [],\n endList: true,\n mediaGroups: {\n AUDIO: {},\n VIDEO: {},\n ['CLOSED-CAPTIONS']: {},\n SUBTITLES: {}\n },\n uri: '',\n duration,\n playlists: addSidxSegmentsToPlaylists(videoPlaylists, sidxMapping)\n };\n\n if (minimumUpdatePeriod >= 0) {\n manifest.minimumUpdatePeriod = minimumUpdatePeriod * 1000;\n }\n\n if (locations) {\n manifest.locations = locations;\n }\n\n if (contentSteering) {\n manifest.contentSteering = contentSteering;\n }\n\n if (type === 'dynamic') {\n manifest.suggestedPresentationDelay = suggestedPresentationDelay;\n }\n\n if (eventStream && eventStream.length > 0) {\n manifest.eventStream = eventStream;\n }\n\n const isAudioOnly = manifest.playlists.length === 0;\n const organizedAudioGroup = audioPlaylists.length ? organizeAudioPlaylists(audioPlaylists, sidxMapping, isAudioOnly) : null;\n const organizedVttGroup = vttPlaylists.length ? organizeVttPlaylists(vttPlaylists, sidxMapping) : null;\n const formattedPlaylists = videoPlaylists.concat(flattenMediaGroupPlaylists(organizedAudioGroup), flattenMediaGroupPlaylists(organizedVttGroup));\n const playlistTimelineStarts = formattedPlaylists.map(({\n timelineStarts\n }) => timelineStarts);\n manifest.timelineStarts = getUniqueTimelineStarts(playlistTimelineStarts);\n addMediaSequenceValues(formattedPlaylists, manifest.timelineStarts);\n\n if (organizedAudioGroup) {\n manifest.mediaGroups.AUDIO.audio = organizedAudioGroup;\n }\n\n if (organizedVttGroup) {\n manifest.mediaGroups.SUBTITLES.subs = organizedVttGroup;\n }\n\n if (captions.length) {\n manifest.mediaGroups['CLOSED-CAPTIONS'].cc = organizeCaptionServices(captions);\n }\n\n if (previousManifest) {\n return positionManifestOnTimeline({\n oldManifest: previousManifest,\n newManifest: manifest\n });\n }\n\n return manifest;\n};\n\n/**\n * Calculates the R (repetition) value for a live stream (for the final segment\n * in a manifest where the r value is negative 1)\n *\n * @param {Object} attributes\n * Object containing all inherited attributes from parent elements with attribute\n * names as keys\n * @param {number} time\n * current time (typically the total time up until the final segment)\n * @param {number} duration\n * duration property for the given \n *\n * @return {number}\n * R value to reach the end of the given period\n */\nconst getLiveRValue = (attributes, time, duration) => {\n const {\n NOW,\n clientOffset,\n availabilityStartTime,\n timescale = 1,\n periodStart = 0,\n minimumUpdatePeriod = 0\n } = attributes;\n const now = (NOW + clientOffset) / 1000;\n const periodStartWC = availabilityStartTime + periodStart;\n const periodEndWC = now + minimumUpdatePeriod;\n const periodDuration = periodEndWC - periodStartWC;\n return Math.ceil((periodDuration * timescale - time) / duration);\n};\n/**\n * Uses information provided by SegmentTemplate.SegmentTimeline to determine segment\n * timing and duration\n *\n * @param {Object} attributes\n * Object containing all inherited attributes from parent elements with attribute\n * names as keys\n * @param {Object[]} segmentTimeline\n * List of objects representing the attributes of each S element contained within\n *\n * @return {{number: number, duration: number, time: number, timeline: number}[]}\n * List of Objects with segment timing and duration info\n */\n\n\nconst parseByTimeline = (attributes, segmentTimeline) => {\n const {\n type,\n minimumUpdatePeriod = 0,\n media = '',\n sourceDuration,\n timescale = 1,\n startNumber = 1,\n periodStart: timeline\n } = attributes;\n const segments = [];\n let time = -1;\n\n for (let sIndex = 0; sIndex < segmentTimeline.length; sIndex++) {\n const S = segmentTimeline[sIndex];\n const duration = S.d;\n const repeat = S.r || 0;\n const segmentTime = S.t || 0;\n\n if (time < 0) {\n // first segment\n time = segmentTime;\n }\n\n if (segmentTime && segmentTime > time) {\n // discontinuity\n // TODO: How to handle this type of discontinuity\n // timeline++ here would treat it like HLS discontuity and content would\n // get appended without gap\n // E.G.\n // \n // \n // \n // \n // would have $Time$ values of [0, 1, 2, 5]\n // should this be appened at time positions [0, 1, 2, 3],(#EXT-X-DISCONTINUITY)\n // or [0, 1, 2, gap, gap, 5]? (#EXT-X-GAP)\n // does the value of sourceDuration consider this when calculating arbitrary\n // negative @r repeat value?\n // E.G. Same elements as above with this added at the end\n // \n // with a sourceDuration of 10\n // Would the 2 gaps be included in the time duration calculations resulting in\n // 8 segments with $Time$ values of [0, 1, 2, 5, 6, 7, 8, 9] or 10 segments\n // with $Time$ values of [0, 1, 2, 5, 6, 7, 8, 9, 10, 11] ?\n time = segmentTime;\n }\n\n let count;\n\n if (repeat < 0) {\n const nextS = sIndex + 1;\n\n if (nextS === segmentTimeline.length) {\n // last segment\n if (type === 'dynamic' && minimumUpdatePeriod > 0 && media.indexOf('$Number$') > 0) {\n count = getLiveRValue(attributes, time, duration);\n } else {\n // TODO: This may be incorrect depending on conclusion of TODO above\n count = (sourceDuration * timescale - time) / duration;\n }\n } else {\n count = (segmentTimeline[nextS].t - time) / duration;\n }\n } else {\n count = repeat + 1;\n }\n\n const end = startNumber + segments.length + count;\n let number = startNumber + segments.length;\n\n while (number < end) {\n segments.push({\n number,\n duration: duration / timescale,\n time,\n timeline\n });\n time += duration;\n number++;\n }\n }\n\n return segments;\n};\n\nconst identifierPattern = /\\$([A-z]*)(?:(%0)([0-9]+)d)?\\$/g;\n/**\n * Replaces template identifiers with corresponding values. To be used as the callback\n * for String.prototype.replace\n *\n * @name replaceCallback\n * @function\n * @param {string} match\n * Entire match of identifier\n * @param {string} identifier\n * Name of matched identifier\n * @param {string} format\n * Format tag string. Its presence indicates that padding is expected\n * @param {string} width\n * Desired length of the replaced value. Values less than this width shall be left\n * zero padded\n * @return {string}\n * Replacement for the matched identifier\n */\n\n/**\n * Returns a function to be used as a callback for String.prototype.replace to replace\n * template identifiers\n *\n * @param {Obect} values\n * Object containing values that shall be used to replace known identifiers\n * @param {number} values.RepresentationID\n * Value of the Representation@id attribute\n * @param {number} values.Number\n * Number of the corresponding segment\n * @param {number} values.Bandwidth\n * Value of the Representation@bandwidth attribute.\n * @param {number} values.Time\n * Timestamp value of the corresponding segment\n * @return {replaceCallback}\n * Callback to be used with String.prototype.replace to replace identifiers\n */\n\nconst identifierReplacement = values => (match, identifier, format, width) => {\n if (match === '$$') {\n // escape sequence\n return '$';\n }\n\n if (typeof values[identifier] === 'undefined') {\n return match;\n }\n\n const value = '' + values[identifier];\n\n if (identifier === 'RepresentationID') {\n // Format tag shall not be present with RepresentationID\n return value;\n }\n\n if (!format) {\n width = 1;\n } else {\n width = parseInt(width, 10);\n }\n\n if (value.length >= width) {\n return value;\n }\n\n return `${new Array(width - value.length + 1).join('0')}${value}`;\n};\n/**\n * Constructs a segment url from a template string\n *\n * @param {string} url\n * Template string to construct url from\n * @param {Obect} values\n * Object containing values that shall be used to replace known identifiers\n * @param {number} values.RepresentationID\n * Value of the Representation@id attribute\n * @param {number} values.Number\n * Number of the corresponding segment\n * @param {number} values.Bandwidth\n * Value of the Representation@bandwidth attribute.\n * @param {number} values.Time\n * Timestamp value of the corresponding segment\n * @return {string}\n * Segment url with identifiers replaced\n */\n\nconst constructTemplateUrl = (url, values) => url.replace(identifierPattern, identifierReplacement(values));\n/**\n * Generates a list of objects containing timing and duration information about each\n * segment needed to generate segment uris and the complete segment object\n *\n * @param {Object} attributes\n * Object containing all inherited attributes from parent elements with attribute\n * names as keys\n * @param {Object[]|undefined} segmentTimeline\n * List of objects representing the attributes of each S element contained within\n * the SegmentTimeline element\n * @return {{number: number, duration: number, time: number, timeline: number}[]}\n * List of Objects with segment timing and duration info\n */\n\nconst parseTemplateInfo = (attributes, segmentTimeline) => {\n if (!attributes.duration && !segmentTimeline) {\n // if neither @duration or SegmentTimeline are present, then there shall be exactly\n // one media segment\n return [{\n number: attributes.startNumber || 1,\n duration: attributes.sourceDuration,\n time: 0,\n timeline: attributes.periodStart\n }];\n }\n\n if (attributes.duration) {\n return parseByDuration(attributes);\n }\n\n return parseByTimeline(attributes, segmentTimeline);\n};\n/**\n * Generates a list of segments using information provided by the SegmentTemplate element\n *\n * @param {Object} attributes\n * Object containing all inherited attributes from parent elements with attribute\n * names as keys\n * @param {Object[]|undefined} segmentTimeline\n * List of objects representing the attributes of each S element contained within\n * the SegmentTimeline element\n * @return {Object[]}\n * List of segment objects\n */\n\nconst segmentsFromTemplate = (attributes, segmentTimeline) => {\n const templateValues = {\n RepresentationID: attributes.id,\n Bandwidth: attributes.bandwidth || 0\n };\n const {\n initialization = {\n sourceURL: '',\n range: ''\n }\n } = attributes;\n const mapSegment = urlTypeToSegment({\n baseUrl: attributes.baseUrl,\n source: constructTemplateUrl(initialization.sourceURL, templateValues),\n range: initialization.range\n });\n const segments = parseTemplateInfo(attributes, segmentTimeline);\n return segments.map(segment => {\n templateValues.Number = segment.number;\n templateValues.Time = segment.time;\n const uri = constructTemplateUrl(attributes.media || '', templateValues); // See DASH spec section 5.3.9.2.2\n // - if timescale isn't present on any level, default to 1.\n\n const timescale = attributes.timescale || 1; // - if presentationTimeOffset isn't present on any level, default to 0\n\n const presentationTimeOffset = attributes.presentationTimeOffset || 0;\n const presentationTime = // Even if the @t attribute is not specified for the segment, segment.time is\n // calculated in mpd-parser prior to this, so it's assumed to be available.\n attributes.periodStart + (segment.time - presentationTimeOffset) / timescale;\n const map = {\n uri,\n timeline: segment.timeline,\n duration: segment.duration,\n resolvedUri: resolveUrl(attributes.baseUrl || '', uri),\n map: mapSegment,\n number: segment.number,\n presentationTime\n };\n return map;\n });\n};\n\n/**\n * Converts a (of type URLType from the DASH spec 5.3.9.2 Table 14)\n * to an object that matches the output of a segment in videojs/mpd-parser\n *\n * @param {Object} attributes\n * Object containing all inherited attributes from parent elements with attribute\n * names as keys\n * @param {Object} segmentUrl\n * node to translate into a segment object\n * @return {Object} translated segment object\n */\n\nconst SegmentURLToSegmentObject = (attributes, segmentUrl) => {\n const {\n baseUrl,\n initialization = {}\n } = attributes;\n const initSegment = urlTypeToSegment({\n baseUrl,\n source: initialization.sourceURL,\n range: initialization.range\n });\n const segment = urlTypeToSegment({\n baseUrl,\n source: segmentUrl.media,\n range: segmentUrl.mediaRange\n });\n segment.map = initSegment;\n return segment;\n};\n/**\n * Generates a list of segments using information provided by the SegmentList element\n * SegmentList (DASH SPEC Section 5.3.9.3.2) contains a set of nodes. Each\n * node should be translated into segment.\n *\n * @param {Object} attributes\n * Object containing all inherited attributes from parent elements with attribute\n * names as keys\n * @param {Object[]|undefined} segmentTimeline\n * List of objects representing the attributes of each S element contained within\n * the SegmentTimeline element\n * @return {Object.} list of segments\n */\n\n\nconst segmentsFromList = (attributes, segmentTimeline) => {\n const {\n duration,\n segmentUrls = [],\n periodStart\n } = attributes; // Per spec (5.3.9.2.1) no way to determine segment duration OR\n // if both SegmentTimeline and @duration are defined, it is outside of spec.\n\n if (!duration && !segmentTimeline || duration && segmentTimeline) {\n throw new Error(errors.SEGMENT_TIME_UNSPECIFIED);\n }\n\n const segmentUrlMap = segmentUrls.map(segmentUrlObject => SegmentURLToSegmentObject(attributes, segmentUrlObject));\n let segmentTimeInfo;\n\n if (duration) {\n segmentTimeInfo = parseByDuration(attributes);\n }\n\n if (segmentTimeline) {\n segmentTimeInfo = parseByTimeline(attributes, segmentTimeline);\n }\n\n const segments = segmentTimeInfo.map((segmentTime, index) => {\n if (segmentUrlMap[index]) {\n const segment = segmentUrlMap[index]; // See DASH spec section 5.3.9.2.2\n // - if timescale isn't present on any level, default to 1.\n\n const timescale = attributes.timescale || 1; // - if presentationTimeOffset isn't present on any level, default to 0\n\n const presentationTimeOffset = attributes.presentationTimeOffset || 0;\n segment.timeline = segmentTime.timeline;\n segment.duration = segmentTime.duration;\n segment.number = segmentTime.number;\n segment.presentationTime = periodStart + (segmentTime.time - presentationTimeOffset) / timescale;\n return segment;\n } // Since we're mapping we should get rid of any blank segments (in case\n // the given SegmentTimeline is handling for more elements than we have\n // SegmentURLs for).\n\n }).filter(segment => segment);\n return segments;\n};\n\nconst generateSegments = ({\n attributes,\n segmentInfo\n}) => {\n let segmentAttributes;\n let segmentsFn;\n\n if (segmentInfo.template) {\n segmentsFn = segmentsFromTemplate;\n segmentAttributes = merge(attributes, segmentInfo.template);\n } else if (segmentInfo.base) {\n segmentsFn = segmentsFromBase;\n segmentAttributes = merge(attributes, segmentInfo.base);\n } else if (segmentInfo.list) {\n segmentsFn = segmentsFromList;\n segmentAttributes = merge(attributes, segmentInfo.list);\n }\n\n const segmentsInfo = {\n attributes\n };\n\n if (!segmentsFn) {\n return segmentsInfo;\n }\n\n const segments = segmentsFn(segmentAttributes, segmentInfo.segmentTimeline); // The @duration attribute will be used to determin the playlist's targetDuration which\n // must be in seconds. Since we've generated the segment list, we no longer need\n // @duration to be in @timescale units, so we can convert it here.\n\n if (segmentAttributes.duration) {\n const {\n duration,\n timescale = 1\n } = segmentAttributes;\n segmentAttributes.duration = duration / timescale;\n } else if (segments.length) {\n // if there is no @duration attribute, use the largest segment duration as\n // as target duration\n segmentAttributes.duration = segments.reduce((max, segment) => {\n return Math.max(max, Math.ceil(segment.duration));\n }, 0);\n } else {\n segmentAttributes.duration = 0;\n }\n\n segmentsInfo.attributes = segmentAttributes;\n segmentsInfo.segments = segments; // This is a sidx box without actual segment information\n\n if (segmentInfo.base && segmentAttributes.indexRange) {\n segmentsInfo.sidx = segments[0];\n segmentsInfo.segments = [];\n }\n\n return segmentsInfo;\n};\nconst toPlaylists = representations => representations.map(generateSegments);\n\nconst findChildren = (element, name) => from(element.childNodes).filter(({\n tagName\n}) => tagName === name);\nconst getContent = element => element.textContent.trim();\n\n/**\n * Converts the provided string that may contain a division operation to a number.\n *\n * @param {string} value - the provided string value\n *\n * @return {number} the parsed string value\n */\nconst parseDivisionValue = value => {\n return parseFloat(value.split('/').reduce((prev, current) => prev / current));\n};\n\nconst parseDuration = str => {\n const SECONDS_IN_YEAR = 365 * 24 * 60 * 60;\n const SECONDS_IN_MONTH = 30 * 24 * 60 * 60;\n const SECONDS_IN_DAY = 24 * 60 * 60;\n const SECONDS_IN_HOUR = 60 * 60;\n const SECONDS_IN_MIN = 60; // P10Y10M10DT10H10M10.1S\n\n const durationRegex = /P(?:(\\d*)Y)?(?:(\\d*)M)?(?:(\\d*)D)?(?:T(?:(\\d*)H)?(?:(\\d*)M)?(?:([\\d.]*)S)?)?/;\n const match = durationRegex.exec(str);\n\n if (!match) {\n return 0;\n }\n\n const [year, month, day, hour, minute, second] = match.slice(1);\n return parseFloat(year || 0) * SECONDS_IN_YEAR + parseFloat(month || 0) * SECONDS_IN_MONTH + parseFloat(day || 0) * SECONDS_IN_DAY + parseFloat(hour || 0) * SECONDS_IN_HOUR + parseFloat(minute || 0) * SECONDS_IN_MIN + parseFloat(second || 0);\n};\nconst parseDate = str => {\n // Date format without timezone according to ISO 8601\n // YYY-MM-DDThh:mm:ss.ssssss\n const dateRegex = /^\\d+-\\d+-\\d+T\\d+:\\d+:\\d+(\\.\\d+)?$/; // If the date string does not specifiy a timezone, we must specifiy UTC. This is\n // expressed by ending with 'Z'\n\n if (dateRegex.test(str)) {\n str += 'Z';\n }\n\n return Date.parse(str);\n};\n\nconst parsers = {\n /**\n * Specifies the duration of the entire Media Presentation. Format is a duration string\n * as specified in ISO 8601\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The duration in seconds\n */\n mediaPresentationDuration(value) {\n return parseDuration(value);\n },\n\n /**\n * Specifies the Segment availability start time for all Segments referred to in this\n * MPD. For a dynamic manifest, it specifies the anchor for the earliest availability\n * time. Format is a date string as specified in ISO 8601\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The date as seconds from unix epoch\n */\n availabilityStartTime(value) {\n return parseDate(value) / 1000;\n },\n\n /**\n * Specifies the smallest period between potential changes to the MPD. Format is a\n * duration string as specified in ISO 8601\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The duration in seconds\n */\n minimumUpdatePeriod(value) {\n return parseDuration(value);\n },\n\n /**\n * Specifies the suggested presentation delay. Format is a\n * duration string as specified in ISO 8601\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The duration in seconds\n */\n suggestedPresentationDelay(value) {\n return parseDuration(value);\n },\n\n /**\n * specifices the type of mpd. Can be either \"static\" or \"dynamic\"\n *\n * @param {string} value\n * value of attribute as a string\n *\n * @return {string}\n * The type as a string\n */\n type(value) {\n return value;\n },\n\n /**\n * Specifies the duration of the smallest time shifting buffer for any Representation\n * in the MPD. Format is a duration string as specified in ISO 8601\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The duration in seconds\n */\n timeShiftBufferDepth(value) {\n return parseDuration(value);\n },\n\n /**\n * Specifies the PeriodStart time of the Period relative to the availabilityStarttime.\n * Format is a duration string as specified in ISO 8601\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The duration in seconds\n */\n start(value) {\n return parseDuration(value);\n },\n\n /**\n * Specifies the width of the visual presentation\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed width\n */\n width(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the height of the visual presentation\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed height\n */\n height(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the bitrate of the representation\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed bandwidth\n */\n bandwidth(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the frame rate of the representation\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed frame rate\n */\n frameRate(value) {\n return parseDivisionValue(value);\n },\n\n /**\n * Specifies the number of the first Media Segment in this Representation in the Period\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed number\n */\n startNumber(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the timescale in units per seconds\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed timescale\n */\n timescale(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the presentationTimeOffset.\n *\n * @param {string} value\n * value of the attribute as a string\n *\n * @return {number}\n * The parsed presentationTimeOffset\n */\n presentationTimeOffset(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the constant approximate Segment duration\n * NOTE: The element also contains an @duration attribute. This duration\n * specifies the duration of the Period. This attribute is currently not\n * supported by the rest of the parser, however we still check for it to prevent\n * errors.\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed duration\n */\n duration(value) {\n const parsedValue = parseInt(value, 10);\n\n if (isNaN(parsedValue)) {\n return parseDuration(value);\n }\n\n return parsedValue;\n },\n\n /**\n * Specifies the Segment duration, in units of the value of the @timescale.\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed duration\n */\n d(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the MPD start time, in @timescale units, the first Segment in the series\n * starts relative to the beginning of the Period\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed time\n */\n t(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the repeat count of the number of following contiguous Segments with the\n * same duration expressed by the value of @d\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed number\n */\n r(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the presentationTime.\n *\n * @param {string} value\n * value of the attribute as a string\n *\n * @return {number}\n * The parsed presentationTime\n */\n presentationTime(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Default parser for all other attributes. Acts as a no-op and just returns the value\n * as a string\n *\n * @param {string} value\n * value of attribute as a string\n * @return {string}\n * Unparsed value\n */\n DEFAULT(value) {\n return value;\n }\n\n};\n/**\n * Gets all the attributes and values of the provided node, parses attributes with known\n * types, and returns an object with attribute names mapped to values.\n *\n * @param {Node} el\n * The node to parse attributes from\n * @return {Object}\n * Object with all attributes of el parsed\n */\n\nconst parseAttributes = el => {\n if (!(el && el.attributes)) {\n return {};\n }\n\n return from(el.attributes).reduce((a, e) => {\n const parseFn = parsers[e.name] || parsers.DEFAULT;\n a[e.name] = parseFn(e.value);\n return a;\n }, {});\n};\n\nconst keySystemsMap = {\n 'urn:uuid:1077efec-c0b2-4d02-ace3-3c1e52e2fb4b': 'org.w3.clearkey',\n 'urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed': 'com.widevine.alpha',\n 'urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95': 'com.microsoft.playready',\n 'urn:uuid:f239e769-efa3-4850-9c16-a903c6932efb': 'com.adobe.primetime'\n};\n/**\n * Builds a list of urls that is the product of the reference urls and BaseURL values\n *\n * @param {Object[]} references\n * List of objects containing the reference URL as well as its attributes\n * @param {Node[]} baseUrlElements\n * List of BaseURL nodes from the mpd\n * @return {Object[]}\n * List of objects with resolved urls and attributes\n */\n\nconst buildBaseUrls = (references, baseUrlElements) => {\n if (!baseUrlElements.length) {\n return references;\n }\n\n return flatten(references.map(function (reference) {\n return baseUrlElements.map(function (baseUrlElement) {\n const initialBaseUrl = getContent(baseUrlElement);\n const resolvedBaseUrl = resolveUrl(reference.baseUrl, initialBaseUrl);\n const finalBaseUrl = merge(parseAttributes(baseUrlElement), {\n baseUrl: resolvedBaseUrl\n }); // If the URL is resolved, we want to get the serviceLocation from the reference\n // assuming there is no serviceLocation on the initialBaseUrl\n\n if (resolvedBaseUrl !== initialBaseUrl && !finalBaseUrl.serviceLocation && reference.serviceLocation) {\n finalBaseUrl.serviceLocation = reference.serviceLocation;\n }\n\n return finalBaseUrl;\n });\n }));\n};\n/**\n * Contains all Segment information for its containing AdaptationSet\n *\n * @typedef {Object} SegmentInformation\n * @property {Object|undefined} template\n * Contains the attributes for the SegmentTemplate node\n * @property {Object[]|undefined} segmentTimeline\n * Contains a list of atrributes for each S node within the SegmentTimeline node\n * @property {Object|undefined} list\n * Contains the attributes for the SegmentList node\n * @property {Object|undefined} base\n * Contains the attributes for the SegmentBase node\n */\n\n/**\n * Returns all available Segment information contained within the AdaptationSet node\n *\n * @param {Node} adaptationSet\n * The AdaptationSet node to get Segment information from\n * @return {SegmentInformation}\n * The Segment information contained within the provided AdaptationSet\n */\n\nconst getSegmentInformation = adaptationSet => {\n const segmentTemplate = findChildren(adaptationSet, 'SegmentTemplate')[0];\n const segmentList = findChildren(adaptationSet, 'SegmentList')[0];\n const segmentUrls = segmentList && findChildren(segmentList, 'SegmentURL').map(s => merge({\n tag: 'SegmentURL'\n }, parseAttributes(s)));\n const segmentBase = findChildren(adaptationSet, 'SegmentBase')[0];\n const segmentTimelineParentNode = segmentList || segmentTemplate;\n const segmentTimeline = segmentTimelineParentNode && findChildren(segmentTimelineParentNode, 'SegmentTimeline')[0];\n const segmentInitializationParentNode = segmentList || segmentBase || segmentTemplate;\n const segmentInitialization = segmentInitializationParentNode && findChildren(segmentInitializationParentNode, 'Initialization')[0]; // SegmentTemplate is handled slightly differently, since it can have both\n // @initialization and an node. @initialization can be templated,\n // while the node can have a url and range specified. If the has\n // both @initialization and an subelement we opt to override with\n // the node, as this interaction is not defined in the spec.\n\n const template = segmentTemplate && parseAttributes(segmentTemplate);\n\n if (template && segmentInitialization) {\n template.initialization = segmentInitialization && parseAttributes(segmentInitialization);\n } else if (template && template.initialization) {\n // If it is @initialization we convert it to an object since this is the format that\n // later functions will rely on for the initialization segment. This is only valid\n // for \n template.initialization = {\n sourceURL: template.initialization\n };\n }\n\n const segmentInfo = {\n template,\n segmentTimeline: segmentTimeline && findChildren(segmentTimeline, 'S').map(s => parseAttributes(s)),\n list: segmentList && merge(parseAttributes(segmentList), {\n segmentUrls,\n initialization: parseAttributes(segmentInitialization)\n }),\n base: segmentBase && merge(parseAttributes(segmentBase), {\n initialization: parseAttributes(segmentInitialization)\n })\n };\n Object.keys(segmentInfo).forEach(key => {\n if (!segmentInfo[key]) {\n delete segmentInfo[key];\n }\n });\n return segmentInfo;\n};\n/**\n * Contains Segment information and attributes needed to construct a Playlist object\n * from a Representation\n *\n * @typedef {Object} RepresentationInformation\n * @property {SegmentInformation} segmentInfo\n * Segment information for this Representation\n * @property {Object} attributes\n * Inherited attributes for this Representation\n */\n\n/**\n * Maps a Representation node to an object containing Segment information and attributes\n *\n * @name inheritBaseUrlsCallback\n * @function\n * @param {Node} representation\n * Representation node from the mpd\n * @return {RepresentationInformation}\n * Representation information needed to construct a Playlist object\n */\n\n/**\n * Returns a callback for Array.prototype.map for mapping Representation nodes to\n * Segment information and attributes using inherited BaseURL nodes.\n *\n * @param {Object} adaptationSetAttributes\n * Contains attributes inherited by the AdaptationSet\n * @param {Object[]} adaptationSetBaseUrls\n * List of objects containing resolved base URLs and attributes\n * inherited by the AdaptationSet\n * @param {SegmentInformation} adaptationSetSegmentInfo\n * Contains Segment information for the AdaptationSet\n * @return {inheritBaseUrlsCallback}\n * Callback map function\n */\n\nconst inheritBaseUrls = (adaptationSetAttributes, adaptationSetBaseUrls, adaptationSetSegmentInfo) => representation => {\n const repBaseUrlElements = findChildren(representation, 'BaseURL');\n const repBaseUrls = buildBaseUrls(adaptationSetBaseUrls, repBaseUrlElements);\n const attributes = merge(adaptationSetAttributes, parseAttributes(representation));\n const representationSegmentInfo = getSegmentInformation(representation);\n return repBaseUrls.map(baseUrl => {\n return {\n segmentInfo: merge(adaptationSetSegmentInfo, representationSegmentInfo),\n attributes: merge(attributes, baseUrl)\n };\n });\n};\n/**\n * Tranforms a series of content protection nodes to\n * an object containing pssh data by key system\n *\n * @param {Node[]} contentProtectionNodes\n * Content protection nodes\n * @return {Object}\n * Object containing pssh data by key system\n */\n\nconst generateKeySystemInformation = contentProtectionNodes => {\n return contentProtectionNodes.reduce((acc, node) => {\n const attributes = parseAttributes(node); // Although it could be argued that according to the UUID RFC spec the UUID string (a-f chars) should be generated\n // as a lowercase string it also mentions it should be treated as case-insensitive on input. Since the key system\n // UUIDs in the keySystemsMap are hardcoded as lowercase in the codebase there isn't any reason not to do\n // .toLowerCase() on the input UUID string from the manifest (at least I could not think of one).\n\n if (attributes.schemeIdUri) {\n attributes.schemeIdUri = attributes.schemeIdUri.toLowerCase();\n }\n\n const keySystem = keySystemsMap[attributes.schemeIdUri];\n\n if (keySystem) {\n acc[keySystem] = {\n attributes\n };\n const psshNode = findChildren(node, 'cenc:pssh')[0];\n\n if (psshNode) {\n const pssh = getContent(psshNode);\n acc[keySystem].pssh = pssh && decodeB64ToUint8Array(pssh);\n }\n }\n\n return acc;\n }, {});\n}; // defined in ANSI_SCTE 214-1 2016\n\n\nconst parseCaptionServiceMetadata = service => {\n // 608 captions\n if (service.schemeIdUri === 'urn:scte:dash:cc:cea-608:2015') {\n const values = typeof service.value !== 'string' ? [] : service.value.split(';');\n return values.map(value => {\n let channel;\n let language; // default language to value\n\n language = value;\n\n if (/^CC\\d=/.test(value)) {\n [channel, language] = value.split('=');\n } else if (/^CC\\d$/.test(value)) {\n channel = value;\n }\n\n return {\n channel,\n language\n };\n });\n } else if (service.schemeIdUri === 'urn:scte:dash:cc:cea-708:2015') {\n const values = typeof service.value !== 'string' ? [] : service.value.split(';');\n return values.map(value => {\n const flags = {\n // service or channel number 1-63\n 'channel': undefined,\n // language is a 3ALPHA per ISO 639.2/B\n // field is required\n 'language': undefined,\n // BIT 1/0 or ?\n // default value is 1, meaning 16:9 aspect ratio, 0 is 4:3, ? is unknown\n 'aspectRatio': 1,\n // BIT 1/0\n // easy reader flag indicated the text is tailed to the needs of beginning readers\n // default 0, or off\n 'easyReader': 0,\n // BIT 1/0\n // If 3d metadata is present (CEA-708.1) then 1\n // default 0\n '3D': 0\n };\n\n if (/=/.test(value)) {\n const [channel, opts = ''] = value.split('=');\n flags.channel = channel;\n flags.language = value;\n opts.split(',').forEach(opt => {\n const [name, val] = opt.split(':');\n\n if (name === 'lang') {\n flags.language = val; // er for easyReadery\n } else if (name === 'er') {\n flags.easyReader = Number(val); // war for wide aspect ratio\n } else if (name === 'war') {\n flags.aspectRatio = Number(val);\n } else if (name === '3D') {\n flags['3D'] = Number(val);\n }\n });\n } else {\n flags.language = value;\n }\n\n if (flags.channel) {\n flags.channel = 'SERVICE' + flags.channel;\n }\n\n return flags;\n });\n }\n};\n/**\n * A map callback that will parse all event stream data for a collection of periods\n * DASH ISO_IEC_23009 5.10.2.2\n * https://dashif-documents.azurewebsites.net/Events/master/event.html#mpd-event-timing\n *\n * @param {PeriodInformation} period object containing necessary period information\n * @return a collection of parsed eventstream event objects\n */\n\nconst toEventStream = period => {\n // get and flatten all EventStreams tags and parse attributes and children\n return flatten(findChildren(period.node, 'EventStream').map(eventStream => {\n const eventStreamAttributes = parseAttributes(eventStream);\n const schemeIdUri = eventStreamAttributes.schemeIdUri; // find all Events per EventStream tag and map to return objects\n\n return findChildren(eventStream, 'Event').map(event => {\n const eventAttributes = parseAttributes(event);\n const presentationTime = eventAttributes.presentationTime || 0;\n const timescale = eventStreamAttributes.timescale || 1;\n const duration = eventAttributes.duration || 0;\n const start = presentationTime / timescale + period.attributes.start;\n return {\n schemeIdUri,\n value: eventStreamAttributes.value,\n id: eventAttributes.id,\n start,\n end: start + duration / timescale,\n messageData: getContent(event) || eventAttributes.messageData,\n contentEncoding: eventStreamAttributes.contentEncoding,\n presentationTimeOffset: eventStreamAttributes.presentationTimeOffset || 0\n };\n });\n }));\n};\n/**\n * Maps an AdaptationSet node to a list of Representation information objects\n *\n * @name toRepresentationsCallback\n * @function\n * @param {Node} adaptationSet\n * AdaptationSet node from the mpd\n * @return {RepresentationInformation[]}\n * List of objects containing Representaion information\n */\n\n/**\n * Returns a callback for Array.prototype.map for mapping AdaptationSet nodes to a list of\n * Representation information objects\n *\n * @param {Object} periodAttributes\n * Contains attributes inherited by the Period\n * @param {Object[]} periodBaseUrls\n * Contains list of objects with resolved base urls and attributes\n * inherited by the Period\n * @param {string[]} periodSegmentInfo\n * Contains Segment Information at the period level\n * @return {toRepresentationsCallback}\n * Callback map function\n */\n\nconst toRepresentations = (periodAttributes, periodBaseUrls, periodSegmentInfo) => adaptationSet => {\n const adaptationSetAttributes = parseAttributes(adaptationSet);\n const adaptationSetBaseUrls = buildBaseUrls(periodBaseUrls, findChildren(adaptationSet, 'BaseURL'));\n const role = findChildren(adaptationSet, 'Role')[0];\n const roleAttributes = {\n role: parseAttributes(role)\n };\n let attrs = merge(periodAttributes, adaptationSetAttributes, roleAttributes);\n const accessibility = findChildren(adaptationSet, 'Accessibility')[0];\n const captionServices = parseCaptionServiceMetadata(parseAttributes(accessibility));\n\n if (captionServices) {\n attrs = merge(attrs, {\n captionServices\n });\n }\n\n const label = findChildren(adaptationSet, 'Label')[0];\n\n if (label && label.childNodes.length) {\n const labelVal = label.childNodes[0].nodeValue.trim();\n attrs = merge(attrs, {\n label: labelVal\n });\n }\n\n const contentProtection = generateKeySystemInformation(findChildren(adaptationSet, 'ContentProtection'));\n\n if (Object.keys(contentProtection).length) {\n attrs = merge(attrs, {\n contentProtection\n });\n }\n\n const segmentInfo = getSegmentInformation(adaptationSet);\n const representations = findChildren(adaptationSet, 'Representation');\n const adaptationSetSegmentInfo = merge(periodSegmentInfo, segmentInfo);\n return flatten(representations.map(inheritBaseUrls(attrs, adaptationSetBaseUrls, adaptationSetSegmentInfo)));\n};\n/**\n * Contains all period information for mapping nodes onto adaptation sets.\n *\n * @typedef {Object} PeriodInformation\n * @property {Node} period.node\n * Period node from the mpd\n * @property {Object} period.attributes\n * Parsed period attributes from node plus any added\n */\n\n/**\n * Maps a PeriodInformation object to a list of Representation information objects for all\n * AdaptationSet nodes contained within the Period.\n *\n * @name toAdaptationSetsCallback\n * @function\n * @param {PeriodInformation} period\n * Period object containing necessary period information\n * @param {number} periodStart\n * Start time of the Period within the mpd\n * @return {RepresentationInformation[]}\n * List of objects containing Representaion information\n */\n\n/**\n * Returns a callback for Array.prototype.map for mapping Period nodes to a list of\n * Representation information objects\n *\n * @param {Object} mpdAttributes\n * Contains attributes inherited by the mpd\n * @param {Object[]} mpdBaseUrls\n * Contains list of objects with resolved base urls and attributes\n * inherited by the mpd\n * @return {toAdaptationSetsCallback}\n * Callback map function\n */\n\nconst toAdaptationSets = (mpdAttributes, mpdBaseUrls) => (period, index) => {\n const periodBaseUrls = buildBaseUrls(mpdBaseUrls, findChildren(period.node, 'BaseURL'));\n const periodAttributes = merge(mpdAttributes, {\n periodStart: period.attributes.start\n });\n\n if (typeof period.attributes.duration === 'number') {\n periodAttributes.periodDuration = period.attributes.duration;\n }\n\n const adaptationSets = findChildren(period.node, 'AdaptationSet');\n const periodSegmentInfo = getSegmentInformation(period.node);\n return flatten(adaptationSets.map(toRepresentations(periodAttributes, periodBaseUrls, periodSegmentInfo)));\n};\n/**\n * Tranforms an array of content steering nodes into an object\n * containing CDN content steering information from the MPD manifest.\n *\n * For more information on the DASH spec for Content Steering parsing, see:\n * https://dashif.org/docs/DASH-IF-CTS-00XX-Content-Steering-Community-Review.pdf\n *\n * @param {Node[]} contentSteeringNodes\n * Content steering nodes\n * @param {Function} eventHandler\n * The event handler passed into the parser options to handle warnings\n * @return {Object}\n * Object containing content steering data\n */\n\nconst generateContentSteeringInformation = (contentSteeringNodes, eventHandler) => {\n // If there are more than one ContentSteering tags, throw an error\n if (contentSteeringNodes.length > 1) {\n eventHandler({\n type: 'warn',\n message: 'The MPD manifest should contain no more than one ContentSteering tag'\n });\n } // Return a null value if there are no ContentSteering tags\n\n\n if (!contentSteeringNodes.length) {\n return null;\n }\n\n const infoFromContentSteeringTag = merge({\n serverURL: getContent(contentSteeringNodes[0])\n }, parseAttributes(contentSteeringNodes[0])); // Converts `queryBeforeStart` to a boolean, as well as setting the default value\n // to `false` if it doesn't exist\n\n infoFromContentSteeringTag.queryBeforeStart = infoFromContentSteeringTag.queryBeforeStart === 'true';\n return infoFromContentSteeringTag;\n};\n/**\n * Gets Period@start property for a given period.\n *\n * @param {Object} options\n * Options object\n * @param {Object} options.attributes\n * Period attributes\n * @param {Object} [options.priorPeriodAttributes]\n * Prior period attributes (if prior period is available)\n * @param {string} options.mpdType\n * The MPD@type these periods came from\n * @return {number|null}\n * The period start, or null if it's an early available period or error\n */\n\nconst getPeriodStart = ({\n attributes,\n priorPeriodAttributes,\n mpdType\n}) => {\n // Summary of period start time calculation from DASH spec section 5.3.2.1\n //\n // A period's start is the first period's start + time elapsed after playing all\n // prior periods to this one. Periods continue one after the other in time (without\n // gaps) until the end of the presentation.\n //\n // The value of Period@start should be:\n // 1. if Period@start is present: value of Period@start\n // 2. if previous period exists and it has @duration: previous Period@start +\n // previous Period@duration\n // 3. if this is first period and MPD@type is 'static': 0\n // 4. in all other cases, consider the period an \"early available period\" (note: not\n // currently supported)\n // (1)\n if (typeof attributes.start === 'number') {\n return attributes.start;\n } // (2)\n\n\n if (priorPeriodAttributes && typeof priorPeriodAttributes.start === 'number' && typeof priorPeriodAttributes.duration === 'number') {\n return priorPeriodAttributes.start + priorPeriodAttributes.duration;\n } // (3)\n\n\n if (!priorPeriodAttributes && mpdType === 'static') {\n return 0;\n } // (4)\n // There is currently no logic for calculating the Period@start value if there is\n // no Period@start or prior Period@start and Period@duration available. This is not made\n // explicit by the DASH interop guidelines or the DASH spec, however, since there's\n // nothing about any other resolution strategies, it's implied. Thus, this case should\n // be considered an early available period, or error, and null should suffice for both\n // of those cases.\n\n\n return null;\n};\n/**\n * Traverses the mpd xml tree to generate a list of Representation information objects\n * that have inherited attributes from parent nodes\n *\n * @param {Node} mpd\n * The root node of the mpd\n * @param {Object} options\n * Available options for inheritAttributes\n * @param {string} options.manifestUri\n * The uri source of the mpd\n * @param {number} options.NOW\n * Current time per DASH IOP. Default is current time in ms since epoch\n * @param {number} options.clientOffset\n * Client time difference from NOW (in milliseconds)\n * @return {RepresentationInformation[]}\n * List of objects containing Representation information\n */\n\nconst inheritAttributes = (mpd, options = {}) => {\n const {\n manifestUri = '',\n NOW = Date.now(),\n clientOffset = 0,\n // TODO: For now, we are expecting an eventHandler callback function\n // to be passed into the mpd parser as an option.\n // In the future, we should enable stream parsing by using the Stream class from vhs-utils.\n // This will support new features including a standardized event handler.\n // See the m3u8 parser for examples of how stream parsing is currently used for HLS parsing.\n // https://github.com/videojs/vhs-utils/blob/88d6e10c631e57a5af02c5a62bc7376cd456b4f5/src/stream.js#L9\n eventHandler = function () {}\n } = options;\n const periodNodes = findChildren(mpd, 'Period');\n\n if (!periodNodes.length) {\n throw new Error(errors.INVALID_NUMBER_OF_PERIOD);\n }\n\n const locations = findChildren(mpd, 'Location');\n const mpdAttributes = parseAttributes(mpd);\n const mpdBaseUrls = buildBaseUrls([{\n baseUrl: manifestUri\n }], findChildren(mpd, 'BaseURL'));\n const contentSteeringNodes = findChildren(mpd, 'ContentSteering'); // See DASH spec section 5.3.1.2, Semantics of MPD element. Default type to 'static'.\n\n mpdAttributes.type = mpdAttributes.type || 'static';\n mpdAttributes.sourceDuration = mpdAttributes.mediaPresentationDuration || 0;\n mpdAttributes.NOW = NOW;\n mpdAttributes.clientOffset = clientOffset;\n\n if (locations.length) {\n mpdAttributes.locations = locations.map(getContent);\n }\n\n const periods = []; // Since toAdaptationSets acts on individual periods right now, the simplest approach to\n // adding properties that require looking at prior periods is to parse attributes and add\n // missing ones before toAdaptationSets is called. If more such properties are added, it\n // may be better to refactor toAdaptationSets.\n\n periodNodes.forEach((node, index) => {\n const attributes = parseAttributes(node); // Use the last modified prior period, as it may contain added information necessary\n // for this period.\n\n const priorPeriod = periods[index - 1];\n attributes.start = getPeriodStart({\n attributes,\n priorPeriodAttributes: priorPeriod ? priorPeriod.attributes : null,\n mpdType: mpdAttributes.type\n });\n periods.push({\n node,\n attributes\n });\n });\n return {\n locations: mpdAttributes.locations,\n contentSteeringInfo: generateContentSteeringInformation(contentSteeringNodes, eventHandler),\n // TODO: There are occurences where this `representationInfo` array contains undesired\n // duplicates. This generally occurs when there are multiple BaseURL nodes that are\n // direct children of the MPD node. When we attempt to resolve URLs from a combination of the\n // parent BaseURL and a child BaseURL, and the value does not resolve,\n // we end up returning the child BaseURL multiple times.\n // We need to determine a way to remove these duplicates in a safe way.\n // See: https://github.com/videojs/mpd-parser/pull/17#discussion_r162750527\n representationInfo: flatten(periods.map(toAdaptationSets(mpdAttributes, mpdBaseUrls))),\n eventStream: flatten(periods.map(toEventStream))\n };\n};\n\nconst stringToMpdXml = manifestString => {\n if (manifestString === '') {\n throw new Error(errors.DASH_EMPTY_MANIFEST);\n }\n\n const parser = new DOMParser();\n let xml;\n let mpd;\n\n try {\n xml = parser.parseFromString(manifestString, 'application/xml');\n mpd = xml && xml.documentElement.tagName === 'MPD' ? xml.documentElement : null;\n } catch (e) {// ie 11 throws on invalid xml\n }\n\n if (!mpd || mpd && mpd.getElementsByTagName('parsererror').length > 0) {\n throw new Error(errors.DASH_INVALID_XML);\n }\n\n return mpd;\n};\n\n/**\n * Parses the manifest for a UTCTiming node, returning the nodes attributes if found\n *\n * @param {string} mpd\n * XML string of the MPD manifest\n * @return {Object|null}\n * Attributes of UTCTiming node specified in the manifest. Null if none found\n */\n\nconst parseUTCTimingScheme = mpd => {\n const UTCTimingNode = findChildren(mpd, 'UTCTiming')[0];\n\n if (!UTCTimingNode) {\n return null;\n }\n\n const attributes = parseAttributes(UTCTimingNode);\n\n switch (attributes.schemeIdUri) {\n case 'urn:mpeg:dash:utc:http-head:2014':\n case 'urn:mpeg:dash:utc:http-head:2012':\n attributes.method = 'HEAD';\n break;\n\n case 'urn:mpeg:dash:utc:http-xsdate:2014':\n case 'urn:mpeg:dash:utc:http-iso:2014':\n case 'urn:mpeg:dash:utc:http-xsdate:2012':\n case 'urn:mpeg:dash:utc:http-iso:2012':\n attributes.method = 'GET';\n break;\n\n case 'urn:mpeg:dash:utc:direct:2014':\n case 'urn:mpeg:dash:utc:direct:2012':\n attributes.method = 'DIRECT';\n attributes.value = Date.parse(attributes.value);\n break;\n\n case 'urn:mpeg:dash:utc:http-ntp:2014':\n case 'urn:mpeg:dash:utc:ntp:2014':\n case 'urn:mpeg:dash:utc:sntp:2014':\n default:\n throw new Error(errors.UNSUPPORTED_UTC_TIMING_SCHEME);\n }\n\n return attributes;\n};\n\nconst VERSION = version;\n/*\n * Given a DASH manifest string and options, parses the DASH manifest into an object in the\n * form outputed by m3u8-parser and accepted by videojs/http-streaming.\n *\n * For live DASH manifests, if `previousManifest` is provided in options, then the newly\n * parsed DASH manifest will have its media sequence and discontinuity sequence values\n * updated to reflect its position relative to the prior manifest.\n *\n * @param {string} manifestString - the DASH manifest as a string\n * @param {options} [options] - any options\n *\n * @return {Object} the manifest object\n */\n\nconst parse = (manifestString, options = {}) => {\n const parsedManifestInfo = inheritAttributes(stringToMpdXml(manifestString), options);\n const playlists = toPlaylists(parsedManifestInfo.representationInfo);\n return toM3u8({\n dashPlaylists: playlists,\n locations: parsedManifestInfo.locations,\n contentSteering: parsedManifestInfo.contentSteeringInfo,\n sidxMapping: options.sidxMapping,\n previousManifest: options.previousManifest,\n eventStream: parsedManifestInfo.eventStream\n });\n};\n/**\n * Parses the manifest for a UTCTiming node, returning the nodes attributes if found\n *\n * @param {string} manifestString\n * XML string of the MPD manifest\n * @return {Object|null}\n * Attributes of UTCTiming node specified in the manifest. Null if none found\n */\n\n\nconst parseUTCTiming = manifestString => parseUTCTimingScheme(stringToMpdXml(manifestString));\n\nexport { VERSION, addSidxSegmentsToPlaylist$1 as addSidxSegmentsToPlaylist, generateSidxKey, inheritAttributes, parse, parseUTCTiming, stringToMpdXml, toM3u8, toPlaylists };\n","'use strict'\n\n/**\n * Ponyfill for `Array.prototype.find` which is only available in ES6 runtimes.\n *\n * Works with anything that has a `length` property and index access properties, including NodeList.\n *\n * @template {unknown} T\n * @param {Array | ({length:number, [number]: T})} list\n * @param {function (item: T, index: number, list:Array | ({length:number, [number]: T})):boolean} predicate\n * @param {Partial>?} ac `Array.prototype` by default,\n * \t\t\t\tallows injecting a custom implementation in tests\n * @returns {T | undefined}\n *\n * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find\n * @see https://tc39.es/ecma262/multipage/indexed-collections.html#sec-array.prototype.find\n */\nfunction find(list, predicate, ac) {\n\tif (ac === undefined) {\n\t\tac = Array.prototype;\n\t}\n\tif (list && typeof ac.find === 'function') {\n\t\treturn ac.find.call(list, predicate);\n\t}\n\tfor (var i = 0; i < list.length; i++) {\n\t\tif (Object.prototype.hasOwnProperty.call(list, i)) {\n\t\t\tvar item = list[i];\n\t\t\tif (predicate.call(undefined, item, i, list)) {\n\t\t\t\treturn item;\n\t\t\t}\n\t\t}\n\t}\n}\n\n/**\n * \"Shallow freezes\" an object to render it immutable.\n * Uses `Object.freeze` if available,\n * otherwise the immutability is only in the type.\n *\n * Is used to create \"enum like\" objects.\n *\n * @template T\n * @param {T} object the object to freeze\n * @param {Pick = Object} oc `Object` by default,\n * \t\t\t\tallows to inject custom object constructor for tests\n * @returns {Readonly}\n *\n * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/freeze\n */\nfunction freeze(object, oc) {\n\tif (oc === undefined) {\n\t\toc = Object\n\t}\n\treturn oc && typeof oc.freeze === 'function' ? oc.freeze(object) : object\n}\n\n/**\n * Since we can not rely on `Object.assign` we provide a simplified version\n * that is sufficient for our needs.\n *\n * @param {Object} target\n * @param {Object | null | undefined} source\n *\n * @returns {Object} target\n * @throws TypeError if target is not an object\n *\n * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign\n * @see https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-object.assign\n */\nfunction assign(target, source) {\n\tif (target === null || typeof target !== 'object') {\n\t\tthrow new TypeError('target is not an object')\n\t}\n\tfor (var key in source) {\n\t\tif (Object.prototype.hasOwnProperty.call(source, key)) {\n\t\t\ttarget[key] = source[key]\n\t\t}\n\t}\n\treturn target\n}\n\n/**\n * All mime types that are allowed as input to `DOMParser.parseFromString`\n *\n * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString#Argument02 MDN\n * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#domparsersupportedtype WHATWG HTML Spec\n * @see DOMParser.prototype.parseFromString\n */\nvar MIME_TYPE = freeze({\n\t/**\n\t * `text/html`, the only mime type that triggers treating an XML document as HTML.\n\t *\n\t * @see DOMParser.SupportedType.isHTML\n\t * @see https://www.iana.org/assignments/media-types/text/html IANA MimeType registration\n\t * @see https://en.wikipedia.org/wiki/HTML Wikipedia\n\t * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString MDN\n\t * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-domparser-parsefromstring WHATWG HTML Spec\n\t */\n\tHTML: 'text/html',\n\n\t/**\n\t * Helper method to check a mime type if it indicates an HTML document\n\t *\n\t * @param {string} [value]\n\t * @returns {boolean}\n\t *\n\t * @see https://www.iana.org/assignments/media-types/text/html IANA MimeType registration\n\t * @see https://en.wikipedia.org/wiki/HTML Wikipedia\n\t * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString MDN\n\t * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-domparser-parsefromstring \t */\n\tisHTML: function (value) {\n\t\treturn value === MIME_TYPE.HTML\n\t},\n\n\t/**\n\t * `application/xml`, the standard mime type for XML documents.\n\t *\n\t * @see https://www.iana.org/assignments/media-types/application/xml IANA MimeType registration\n\t * @see https://tools.ietf.org/html/rfc7303#section-9.1 RFC 7303\n\t * @see https://en.wikipedia.org/wiki/XML_and_MIME Wikipedia\n\t */\n\tXML_APPLICATION: 'application/xml',\n\n\t/**\n\t * `text/html`, an alias for `application/xml`.\n\t *\n\t * @see https://tools.ietf.org/html/rfc7303#section-9.2 RFC 7303\n\t * @see https://www.iana.org/assignments/media-types/text/xml IANA MimeType registration\n\t * @see https://en.wikipedia.org/wiki/XML_and_MIME Wikipedia\n\t */\n\tXML_TEXT: 'text/xml',\n\n\t/**\n\t * `application/xhtml+xml`, indicates an XML document that has the default HTML namespace,\n\t * but is parsed as an XML document.\n\t *\n\t * @see https://www.iana.org/assignments/media-types/application/xhtml+xml IANA MimeType registration\n\t * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocument WHATWG DOM Spec\n\t * @see https://en.wikipedia.org/wiki/XHTML Wikipedia\n\t */\n\tXML_XHTML_APPLICATION: 'application/xhtml+xml',\n\n\t/**\n\t * `image/svg+xml`,\n\t *\n\t * @see https://www.iana.org/assignments/media-types/image/svg+xml IANA MimeType registration\n\t * @see https://www.w3.org/TR/SVG11/ W3C SVG 1.1\n\t * @see https://en.wikipedia.org/wiki/Scalable_Vector_Graphics Wikipedia\n\t */\n\tXML_SVG_IMAGE: 'image/svg+xml',\n})\n\n/**\n * Namespaces that are used in this code base.\n *\n * @see http://www.w3.org/TR/REC-xml-names\n */\nvar NAMESPACE = freeze({\n\t/**\n\t * The XHTML namespace.\n\t *\n\t * @see http://www.w3.org/1999/xhtml\n\t */\n\tHTML: 'http://www.w3.org/1999/xhtml',\n\n\t/**\n\t * Checks if `uri` equals `NAMESPACE.HTML`.\n\t *\n\t * @param {string} [uri]\n\t *\n\t * @see NAMESPACE.HTML\n\t */\n\tisHTML: function (uri) {\n\t\treturn uri === NAMESPACE.HTML\n\t},\n\n\t/**\n\t * The SVG namespace.\n\t *\n\t * @see http://www.w3.org/2000/svg\n\t */\n\tSVG: 'http://www.w3.org/2000/svg',\n\n\t/**\n\t * The `xml:` namespace.\n\t *\n\t * @see http://www.w3.org/XML/1998/namespace\n\t */\n\tXML: 'http://www.w3.org/XML/1998/namespace',\n\n\t/**\n\t * The `xmlns:` namespace\n\t *\n\t * @see https://www.w3.org/2000/xmlns/\n\t */\n\tXMLNS: 'http://www.w3.org/2000/xmlns/',\n})\n\nexports.assign = assign;\nexports.find = find;\nexports.freeze = freeze;\nexports.MIME_TYPE = MIME_TYPE;\nexports.NAMESPACE = NAMESPACE;\n","var conventions = require(\"./conventions\");\nvar dom = require('./dom')\nvar entities = require('./entities');\nvar sax = require('./sax');\n\nvar DOMImplementation = dom.DOMImplementation;\n\nvar NAMESPACE = conventions.NAMESPACE;\n\nvar ParseError = sax.ParseError;\nvar XMLReader = sax.XMLReader;\n\n/**\n * Normalizes line ending according to https://www.w3.org/TR/xml11/#sec-line-ends:\n *\n * > XML parsed entities are often stored in computer files which,\n * > for editing convenience, are organized into lines.\n * > These lines are typically separated by some combination\n * > of the characters CARRIAGE RETURN (#xD) and LINE FEED (#xA).\n * >\n * > To simplify the tasks of applications, the XML processor must behave\n * > as if it normalized all line breaks in external parsed entities (including the document entity)\n * > on input, before parsing, by translating all of the following to a single #xA character:\n * >\n * > 1. the two-character sequence #xD #xA\n * > 2. the two-character sequence #xD #x85\n * > 3. the single character #x85\n * > 4. the single character #x2028\n * > 5. any #xD character that is not immediately followed by #xA or #x85.\n *\n * @param {string} input\n * @returns {string}\n */\nfunction normalizeLineEndings(input) {\n\treturn input\n\t\t.replace(/\\r[\\n\\u0085]/g, '\\n')\n\t\t.replace(/[\\r\\u0085\\u2028]/g, '\\n')\n}\n\n/**\n * @typedef Locator\n * @property {number} [columnNumber]\n * @property {number} [lineNumber]\n */\n\n/**\n * @typedef DOMParserOptions\n * @property {DOMHandler} [domBuilder]\n * @property {Function} [errorHandler]\n * @property {(string) => string} [normalizeLineEndings] used to replace line endings before parsing\n * \t\t\t\t\t\tdefaults to `normalizeLineEndings`\n * @property {Locator} [locator]\n * @property {Record} [xmlns]\n *\n * @see normalizeLineEndings\n */\n\n/**\n * The DOMParser interface provides the ability to parse XML or HTML source code\n * from a string into a DOM `Document`.\n *\n * _xmldom is different from the spec in that it allows an `options` parameter,\n * to override the default behavior._\n *\n * @param {DOMParserOptions} [options]\n * @constructor\n *\n * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser\n * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-parsing-and-serialization\n */\nfunction DOMParser(options){\n\tthis.options = options ||{locator:{}};\n}\n\nDOMParser.prototype.parseFromString = function(source,mimeType){\n\tvar options = this.options;\n\tvar sax = new XMLReader();\n\tvar domBuilder = options.domBuilder || new DOMHandler();//contentHandler and LexicalHandler\n\tvar errorHandler = options.errorHandler;\n\tvar locator = options.locator;\n\tvar defaultNSMap = options.xmlns||{};\n\tvar isHTML = /\\/x?html?$/.test(mimeType);//mimeType.toLowerCase().indexOf('html') > -1;\n \tvar entityMap = isHTML ? entities.HTML_ENTITIES : entities.XML_ENTITIES;\n\tif(locator){\n\t\tdomBuilder.setDocumentLocator(locator)\n\t}\n\n\tsax.errorHandler = buildErrorHandler(errorHandler,domBuilder,locator);\n\tsax.domBuilder = options.domBuilder || domBuilder;\n\tif(isHTML){\n\t\tdefaultNSMap[''] = NAMESPACE.HTML;\n\t}\n\tdefaultNSMap.xml = defaultNSMap.xml || NAMESPACE.XML;\n\tvar normalize = options.normalizeLineEndings || normalizeLineEndings;\n\tif (source && typeof source === 'string') {\n\t\tsax.parse(\n\t\t\tnormalize(source),\n\t\t\tdefaultNSMap,\n\t\t\tentityMap\n\t\t)\n\t} else {\n\t\tsax.errorHandler.error('invalid doc source')\n\t}\n\treturn domBuilder.doc;\n}\nfunction buildErrorHandler(errorImpl,domBuilder,locator){\n\tif(!errorImpl){\n\t\tif(domBuilder instanceof DOMHandler){\n\t\t\treturn domBuilder;\n\t\t}\n\t\terrorImpl = domBuilder ;\n\t}\n\tvar errorHandler = {}\n\tvar isCallback = errorImpl instanceof Function;\n\tlocator = locator||{}\n\tfunction build(key){\n\t\tvar fn = errorImpl[key];\n\t\tif(!fn && isCallback){\n\t\t\tfn = errorImpl.length == 2?function(msg){errorImpl(key,msg)}:errorImpl;\n\t\t}\n\t\terrorHandler[key] = fn && function(msg){\n\t\t\tfn('[xmldom '+key+']\\t'+msg+_locator(locator));\n\t\t}||function(){};\n\t}\n\tbuild('warning');\n\tbuild('error');\n\tbuild('fatalError');\n\treturn errorHandler;\n}\n\n//console.log('#\\n\\n\\n\\n\\n\\n\\n####')\n/**\n * +ContentHandler+ErrorHandler\n * +LexicalHandler+EntityResolver2\n * -DeclHandler-DTDHandler\n *\n * DefaultHandler:EntityResolver, DTDHandler, ContentHandler, ErrorHandler\n * DefaultHandler2:DefaultHandler,LexicalHandler, DeclHandler, EntityResolver2\n * @link http://www.saxproject.org/apidoc/org/xml/sax/helpers/DefaultHandler.html\n */\nfunction DOMHandler() {\n this.cdata = false;\n}\nfunction position(locator,node){\n\tnode.lineNumber = locator.lineNumber;\n\tnode.columnNumber = locator.columnNumber;\n}\n/**\n * @see org.xml.sax.ContentHandler#startDocument\n * @link http://www.saxproject.org/apidoc/org/xml/sax/ContentHandler.html\n */\nDOMHandler.prototype = {\n\tstartDocument : function() {\n \tthis.doc = new DOMImplementation().createDocument(null, null, null);\n \tif (this.locator) {\n \tthis.doc.documentURI = this.locator.systemId;\n \t}\n\t},\n\tstartElement:function(namespaceURI, localName, qName, attrs) {\n\t\tvar doc = this.doc;\n\t var el = doc.createElementNS(namespaceURI, qName||localName);\n\t var len = attrs.length;\n\t appendElement(this, el);\n\t this.currentElement = el;\n\n\t\tthis.locator && position(this.locator,el)\n\t for (var i = 0 ; i < len; i++) {\n\t var namespaceURI = attrs.getURI(i);\n\t var value = attrs.getValue(i);\n\t var qName = attrs.getQName(i);\n\t\t\tvar attr = doc.createAttributeNS(namespaceURI, qName);\n\t\t\tthis.locator &&position(attrs.getLocator(i),attr);\n\t\t\tattr.value = attr.nodeValue = value;\n\t\t\tel.setAttributeNode(attr)\n\t }\n\t},\n\tendElement:function(namespaceURI, localName, qName) {\n\t\tvar current = this.currentElement\n\t\tvar tagName = current.tagName;\n\t\tthis.currentElement = current.parentNode;\n\t},\n\tstartPrefixMapping:function(prefix, uri) {\n\t},\n\tendPrefixMapping:function(prefix) {\n\t},\n\tprocessingInstruction:function(target, data) {\n\t var ins = this.doc.createProcessingInstruction(target, data);\n\t this.locator && position(this.locator,ins)\n\t appendElement(this, ins);\n\t},\n\tignorableWhitespace:function(ch, start, length) {\n\t},\n\tcharacters:function(chars, start, length) {\n\t\tchars = _toString.apply(this,arguments)\n\t\t//console.log(chars)\n\t\tif(chars){\n\t\t\tif (this.cdata) {\n\t\t\t\tvar charNode = this.doc.createCDATASection(chars);\n\t\t\t} else {\n\t\t\t\tvar charNode = this.doc.createTextNode(chars);\n\t\t\t}\n\t\t\tif(this.currentElement){\n\t\t\t\tthis.currentElement.appendChild(charNode);\n\t\t\t}else if(/^\\s*$/.test(chars)){\n\t\t\t\tthis.doc.appendChild(charNode);\n\t\t\t\t//process xml\n\t\t\t}\n\t\t\tthis.locator && position(this.locator,charNode)\n\t\t}\n\t},\n\tskippedEntity:function(name) {\n\t},\n\tendDocument:function() {\n\t\tthis.doc.normalize();\n\t},\n\tsetDocumentLocator:function (locator) {\n\t if(this.locator = locator){// && !('lineNumber' in locator)){\n\t \tlocator.lineNumber = 0;\n\t }\n\t},\n\t//LexicalHandler\n\tcomment:function(chars, start, length) {\n\t\tchars = _toString.apply(this,arguments)\n\t var comm = this.doc.createComment(chars);\n\t this.locator && position(this.locator,comm)\n\t appendElement(this, comm);\n\t},\n\n\tstartCDATA:function() {\n\t //used in characters() methods\n\t this.cdata = true;\n\t},\n\tendCDATA:function() {\n\t this.cdata = false;\n\t},\n\n\tstartDTD:function(name, publicId, systemId) {\n\t\tvar impl = this.doc.implementation;\n\t if (impl && impl.createDocumentType) {\n\t var dt = impl.createDocumentType(name, publicId, systemId);\n\t this.locator && position(this.locator,dt)\n\t appendElement(this, dt);\n\t\t\t\t\tthis.doc.doctype = dt;\n\t }\n\t},\n\t/**\n\t * @see org.xml.sax.ErrorHandler\n\t * @link http://www.saxproject.org/apidoc/org/xml/sax/ErrorHandler.html\n\t */\n\twarning:function(error) {\n\t\tconsole.warn('[xmldom warning]\\t'+error,_locator(this.locator));\n\t},\n\terror:function(error) {\n\t\tconsole.error('[xmldom error]\\t'+error,_locator(this.locator));\n\t},\n\tfatalError:function(error) {\n\t\tthrow new ParseError(error, this.locator);\n\t}\n}\nfunction _locator(l){\n\tif(l){\n\t\treturn '\\n@'+(l.systemId ||'')+'#[line:'+l.lineNumber+',col:'+l.columnNumber+']'\n\t}\n}\nfunction _toString(chars,start,length){\n\tif(typeof chars == 'string'){\n\t\treturn chars.substr(start,length)\n\t}else{//java sax connect width xmldom on rhino(what about: \"? && !(chars instanceof String)\")\n\t\tif(chars.length >= start+length || start){\n\t\t\treturn new java.lang.String(chars,start,length)+'';\n\t\t}\n\t\treturn chars;\n\t}\n}\n\n/*\n * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/LexicalHandler.html\n * used method of org.xml.sax.ext.LexicalHandler:\n * #comment(chars, start, length)\n * #startCDATA()\n * #endCDATA()\n * #startDTD(name, publicId, systemId)\n *\n *\n * IGNORED method of org.xml.sax.ext.LexicalHandler:\n * #endDTD()\n * #startEntity(name)\n * #endEntity(name)\n *\n *\n * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/DeclHandler.html\n * IGNORED method of org.xml.sax.ext.DeclHandler\n * \t#attributeDecl(eName, aName, type, mode, value)\n * #elementDecl(name, model)\n * #externalEntityDecl(name, publicId, systemId)\n * #internalEntityDecl(name, value)\n * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/EntityResolver2.html\n * IGNORED method of org.xml.sax.EntityResolver2\n * #resolveEntity(String name,String publicId,String baseURI,String systemId)\n * #resolveEntity(publicId, systemId)\n * #getExternalSubset(name, baseURI)\n * @link http://www.saxproject.org/apidoc/org/xml/sax/DTDHandler.html\n * IGNORED method of org.xml.sax.DTDHandler\n * #notationDecl(name, publicId, systemId) {};\n * #unparsedEntityDecl(name, publicId, systemId, notationName) {};\n */\n\"endDTD,startEntity,endEntity,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,resolveEntity,getExternalSubset,notationDecl,unparsedEntityDecl\".replace(/\\w+/g,function(key){\n\tDOMHandler.prototype[key] = function(){return null}\n})\n\n/* Private static helpers treated below as private instance methods, so don't need to add these to the public API; we might use a Relator to also get rid of non-standard public properties */\nfunction appendElement (hander,node) {\n if (!hander.currentElement) {\n hander.doc.appendChild(node);\n } else {\n hander.currentElement.appendChild(node);\n }\n}//appendChild and setAttributeNS are preformance key\n\nexports.__DOMHandler = DOMHandler;\nexports.normalizeLineEndings = normalizeLineEndings;\nexports.DOMParser = DOMParser;\n","var conventions = require(\"./conventions\");\n\nvar find = conventions.find;\nvar NAMESPACE = conventions.NAMESPACE;\n\n/**\n * A prerequisite for `[].filter`, to drop elements that are empty\n * @param {string} input\n * @returns {boolean}\n */\nfunction notEmptyString (input) {\n\treturn input !== ''\n}\n/**\n * @see https://infra.spec.whatwg.org/#split-on-ascii-whitespace\n * @see https://infra.spec.whatwg.org/#ascii-whitespace\n *\n * @param {string} input\n * @returns {string[]} (can be empty)\n */\nfunction splitOnASCIIWhitespace(input) {\n\t// U+0009 TAB, U+000A LF, U+000C FF, U+000D CR, U+0020 SPACE\n\treturn input ? input.split(/[\\t\\n\\f\\r ]+/).filter(notEmptyString) : []\n}\n\n/**\n * Adds element as a key to current if it is not already present.\n *\n * @param {Record} current\n * @param {string} element\n * @returns {Record}\n */\nfunction orderedSetReducer (current, element) {\n\tif (!current.hasOwnProperty(element)) {\n\t\tcurrent[element] = true;\n\t}\n\treturn current;\n}\n\n/**\n * @see https://infra.spec.whatwg.org/#ordered-set\n * @param {string} input\n * @returns {string[]}\n */\nfunction toOrderedSet(input) {\n\tif (!input) return [];\n\tvar list = splitOnASCIIWhitespace(input);\n\treturn Object.keys(list.reduce(orderedSetReducer, {}))\n}\n\n/**\n * Uses `list.indexOf` to implement something like `Array.prototype.includes`,\n * which we can not rely on being available.\n *\n * @param {any[]} list\n * @returns {function(any): boolean}\n */\nfunction arrayIncludes (list) {\n\treturn function(element) {\n\t\treturn list && list.indexOf(element) !== -1;\n\t}\n}\n\nfunction copy(src,dest){\n\tfor(var p in src){\n\t\tif (Object.prototype.hasOwnProperty.call(src, p)) {\n\t\t\tdest[p] = src[p];\n\t\t}\n\t}\n}\n\n/**\n^\\w+\\.prototype\\.([_\\w]+)\\s*=\\s*((?:.*\\{\\s*?[\\r\\n][\\s\\S]*?^})|\\S.*?(?=[;\\r\\n]));?\n^\\w+\\.prototype\\.([_\\w]+)\\s*=\\s*(\\S.*?(?=[;\\r\\n]));?\n */\nfunction _extends(Class,Super){\n\tvar pt = Class.prototype;\n\tif(!(pt instanceof Super)){\n\t\tfunction t(){};\n\t\tt.prototype = Super.prototype;\n\t\tt = new t();\n\t\tcopy(pt,t);\n\t\tClass.prototype = pt = t;\n\t}\n\tif(pt.constructor != Class){\n\t\tif(typeof Class != 'function'){\n\t\t\tconsole.error(\"unknown Class:\"+Class)\n\t\t}\n\t\tpt.constructor = Class\n\t}\n}\n\n// Node Types\nvar NodeType = {}\nvar ELEMENT_NODE = NodeType.ELEMENT_NODE = 1;\nvar ATTRIBUTE_NODE = NodeType.ATTRIBUTE_NODE = 2;\nvar TEXT_NODE = NodeType.TEXT_NODE = 3;\nvar CDATA_SECTION_NODE = NodeType.CDATA_SECTION_NODE = 4;\nvar ENTITY_REFERENCE_NODE = NodeType.ENTITY_REFERENCE_NODE = 5;\nvar ENTITY_NODE = NodeType.ENTITY_NODE = 6;\nvar PROCESSING_INSTRUCTION_NODE = NodeType.PROCESSING_INSTRUCTION_NODE = 7;\nvar COMMENT_NODE = NodeType.COMMENT_NODE = 8;\nvar DOCUMENT_NODE = NodeType.DOCUMENT_NODE = 9;\nvar DOCUMENT_TYPE_NODE = NodeType.DOCUMENT_TYPE_NODE = 10;\nvar DOCUMENT_FRAGMENT_NODE = NodeType.DOCUMENT_FRAGMENT_NODE = 11;\nvar NOTATION_NODE = NodeType.NOTATION_NODE = 12;\n\n// ExceptionCode\nvar ExceptionCode = {}\nvar ExceptionMessage = {};\nvar INDEX_SIZE_ERR = ExceptionCode.INDEX_SIZE_ERR = ((ExceptionMessage[1]=\"Index size error\"),1);\nvar DOMSTRING_SIZE_ERR = ExceptionCode.DOMSTRING_SIZE_ERR = ((ExceptionMessage[2]=\"DOMString size error\"),2);\nvar HIERARCHY_REQUEST_ERR = ExceptionCode.HIERARCHY_REQUEST_ERR = ((ExceptionMessage[3]=\"Hierarchy request error\"),3);\nvar WRONG_DOCUMENT_ERR = ExceptionCode.WRONG_DOCUMENT_ERR = ((ExceptionMessage[4]=\"Wrong document\"),4);\nvar INVALID_CHARACTER_ERR = ExceptionCode.INVALID_CHARACTER_ERR = ((ExceptionMessage[5]=\"Invalid character\"),5);\nvar NO_DATA_ALLOWED_ERR = ExceptionCode.NO_DATA_ALLOWED_ERR = ((ExceptionMessage[6]=\"No data allowed\"),6);\nvar NO_MODIFICATION_ALLOWED_ERR = ExceptionCode.NO_MODIFICATION_ALLOWED_ERR = ((ExceptionMessage[7]=\"No modification allowed\"),7);\nvar NOT_FOUND_ERR = ExceptionCode.NOT_FOUND_ERR = ((ExceptionMessage[8]=\"Not found\"),8);\nvar NOT_SUPPORTED_ERR = ExceptionCode.NOT_SUPPORTED_ERR = ((ExceptionMessage[9]=\"Not supported\"),9);\nvar INUSE_ATTRIBUTE_ERR = ExceptionCode.INUSE_ATTRIBUTE_ERR = ((ExceptionMessage[10]=\"Attribute in use\"),10);\n//level2\nvar INVALID_STATE_ERR \t= ExceptionCode.INVALID_STATE_ERR \t= ((ExceptionMessage[11]=\"Invalid state\"),11);\nvar SYNTAX_ERR \t= ExceptionCode.SYNTAX_ERR \t= ((ExceptionMessage[12]=\"Syntax error\"),12);\nvar INVALID_MODIFICATION_ERR \t= ExceptionCode.INVALID_MODIFICATION_ERR \t= ((ExceptionMessage[13]=\"Invalid modification\"),13);\nvar NAMESPACE_ERR \t= ExceptionCode.NAMESPACE_ERR \t= ((ExceptionMessage[14]=\"Invalid namespace\"),14);\nvar INVALID_ACCESS_ERR \t= ExceptionCode.INVALID_ACCESS_ERR \t= ((ExceptionMessage[15]=\"Invalid access\"),15);\n\n/**\n * DOM Level 2\n * Object DOMException\n * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/ecma-script-binding.html\n * @see http://www.w3.org/TR/REC-DOM-Level-1/ecma-script-language-binding.html\n */\nfunction DOMException(code, message) {\n\tif(message instanceof Error){\n\t\tvar error = message;\n\t}else{\n\t\terror = this;\n\t\tError.call(this, ExceptionMessage[code]);\n\t\tthis.message = ExceptionMessage[code];\n\t\tif(Error.captureStackTrace) Error.captureStackTrace(this, DOMException);\n\t}\n\terror.code = code;\n\tif(message) this.message = this.message + \": \" + message;\n\treturn error;\n};\nDOMException.prototype = Error.prototype;\ncopy(ExceptionCode,DOMException)\n\n/**\n * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-536297177\n * The NodeList interface provides the abstraction of an ordered collection of nodes, without defining or constraining how this collection is implemented. NodeList objects in the DOM are live.\n * The items in the NodeList are accessible via an integral index, starting from 0.\n */\nfunction NodeList() {\n};\nNodeList.prototype = {\n\t/**\n\t * The number of nodes in the list. The range of valid child node indices is 0 to length-1 inclusive.\n\t * @standard level1\n\t */\n\tlength:0,\n\t/**\n\t * Returns the indexth item in the collection. If index is greater than or equal to the number of nodes in the list, this returns null.\n\t * @standard level1\n\t * @param index unsigned long\n\t * Index into the collection.\n\t * @return Node\n\t * \tThe node at the indexth position in the NodeList, or null if that is not a valid index.\n\t */\n\titem: function(index) {\n\t\treturn index >= 0 && index < this.length ? this[index] : null;\n\t},\n\ttoString:function(isHTML,nodeFilter){\n\t\tfor(var buf = [], i = 0;i=0){\n\t\tvar lastIndex = list.length-1\n\t\twhile(i0 || key == 'xmlns'){\n//\t\t\treturn null;\n//\t\t}\n\t\t//console.log()\n\t\tvar i = this.length;\n\t\twhile(i--){\n\t\t\tvar attr = this[i];\n\t\t\t//console.log(attr.nodeName,key)\n\t\t\tif(attr.nodeName == key){\n\t\t\t\treturn attr;\n\t\t\t}\n\t\t}\n\t},\n\tsetNamedItem: function(attr) {\n\t\tvar el = attr.ownerElement;\n\t\tif(el && el!=this._ownerElement){\n\t\t\tthrow new DOMException(INUSE_ATTRIBUTE_ERR);\n\t\t}\n\t\tvar oldAttr = this.getNamedItem(attr.nodeName);\n\t\t_addNamedNode(this._ownerElement,this,attr,oldAttr);\n\t\treturn oldAttr;\n\t},\n\t/* returns Node */\n\tsetNamedItemNS: function(attr) {// raises: WRONG_DOCUMENT_ERR,NO_MODIFICATION_ALLOWED_ERR,INUSE_ATTRIBUTE_ERR\n\t\tvar el = attr.ownerElement, oldAttr;\n\t\tif(el && el!=this._ownerElement){\n\t\t\tthrow new DOMException(INUSE_ATTRIBUTE_ERR);\n\t\t}\n\t\toldAttr = this.getNamedItemNS(attr.namespaceURI,attr.localName);\n\t\t_addNamedNode(this._ownerElement,this,attr,oldAttr);\n\t\treturn oldAttr;\n\t},\n\n\t/* returns Node */\n\tremoveNamedItem: function(key) {\n\t\tvar attr = this.getNamedItem(key);\n\t\t_removeNamedNode(this._ownerElement,this,attr);\n\t\treturn attr;\n\n\n\t},// raises: NOT_FOUND_ERR,NO_MODIFICATION_ALLOWED_ERR\n\n\t//for level2\n\tremoveNamedItemNS:function(namespaceURI,localName){\n\t\tvar attr = this.getNamedItemNS(namespaceURI,localName);\n\t\t_removeNamedNode(this._ownerElement,this,attr);\n\t\treturn attr;\n\t},\n\tgetNamedItemNS: function(namespaceURI, localName) {\n\t\tvar i = this.length;\n\t\twhile(i--){\n\t\t\tvar node = this[i];\n\t\t\tif(node.localName == localName && node.namespaceURI == namespaceURI){\n\t\t\t\treturn node;\n\t\t\t}\n\t\t}\n\t\treturn null;\n\t}\n};\n\n/**\n * The DOMImplementation interface represents an object providing methods\n * which are not dependent on any particular document.\n * Such an object is returned by the `Document.implementation` property.\n *\n * __The individual methods describe the differences compared to the specs.__\n *\n * @constructor\n *\n * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation MDN\n * @see https://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-102161490 DOM Level 1 Core (Initial)\n * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#ID-102161490 DOM Level 2 Core\n * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#ID-102161490 DOM Level 3 Core\n * @see https://dom.spec.whatwg.org/#domimplementation DOM Living Standard\n */\nfunction DOMImplementation() {\n}\n\nDOMImplementation.prototype = {\n\t/**\n\t * The DOMImplementation.hasFeature() method returns a Boolean flag indicating if a given feature is supported.\n\t * The different implementations fairly diverged in what kind of features were reported.\n\t * The latest version of the spec settled to force this method to always return true, where the functionality was accurate and in use.\n\t *\n\t * @deprecated It is deprecated and modern browsers return true in all cases.\n\t *\n\t * @param {string} feature\n\t * @param {string} [version]\n\t * @returns {boolean} always true\n\t *\n\t * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/hasFeature MDN\n\t * @see https://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-5CED94D7 DOM Level 1 Core\n\t * @see https://dom.spec.whatwg.org/#dom-domimplementation-hasfeature DOM Living Standard\n\t */\n\thasFeature: function(feature, version) {\n\t\t\treturn true;\n\t},\n\t/**\n\t * Creates an XML Document object of the specified type with its document element.\n\t *\n\t * __It behaves slightly different from the description in the living standard__:\n\t * - There is no interface/class `XMLDocument`, it returns a `Document` instance.\n\t * - `contentType`, `encoding`, `mode`, `origin`, `url` fields are currently not declared.\n\t * - this implementation is not validating names or qualified names\n\t * (when parsing XML strings, the SAX parser takes care of that)\n\t *\n\t * @param {string|null} namespaceURI\n\t * @param {string} qualifiedName\n\t * @param {DocumentType=null} doctype\n\t * @returns {Document}\n\t *\n\t * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/createDocument MDN\n\t * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#Level-2-Core-DOM-createDocument DOM Level 2 Core (initial)\n\t * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocument DOM Level 2 Core\n\t *\n\t * @see https://dom.spec.whatwg.org/#validate-and-extract DOM: Validate and extract\n\t * @see https://www.w3.org/TR/xml/#NT-NameStartChar XML Spec: Names\n\t * @see https://www.w3.org/TR/xml-names/#ns-qualnames XML Namespaces: Qualified names\n\t */\n\tcreateDocument: function(namespaceURI, qualifiedName, doctype){\n\t\tvar doc = new Document();\n\t\tdoc.implementation = this;\n\t\tdoc.childNodes = new NodeList();\n\t\tdoc.doctype = doctype || null;\n\t\tif (doctype){\n\t\t\tdoc.appendChild(doctype);\n\t\t}\n\t\tif (qualifiedName){\n\t\t\tvar root = doc.createElementNS(namespaceURI, qualifiedName);\n\t\t\tdoc.appendChild(root);\n\t\t}\n\t\treturn doc;\n\t},\n\t/**\n\t * Returns a doctype, with the given `qualifiedName`, `publicId`, and `systemId`.\n\t *\n\t * __This behavior is slightly different from the in the specs__:\n\t * - this implementation is not validating names or qualified names\n\t * (when parsing XML strings, the SAX parser takes care of that)\n\t *\n\t * @param {string} qualifiedName\n\t * @param {string} [publicId]\n\t * @param {string} [systemId]\n\t * @returns {DocumentType} which can either be used with `DOMImplementation.createDocument` upon document creation\n\t * \t\t\t\t or can be put into the document via methods like `Node.insertBefore()` or `Node.replaceChild()`\n\t *\n\t * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/createDocumentType MDN\n\t * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#Level-2-Core-DOM-createDocType DOM Level 2 Core\n\t * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocumenttype DOM Living Standard\n\t *\n\t * @see https://dom.spec.whatwg.org/#validate-and-extract DOM: Validate and extract\n\t * @see https://www.w3.org/TR/xml/#NT-NameStartChar XML Spec: Names\n\t * @see https://www.w3.org/TR/xml-names/#ns-qualnames XML Namespaces: Qualified names\n\t */\n\tcreateDocumentType: function(qualifiedName, publicId, systemId){\n\t\tvar node = new DocumentType();\n\t\tnode.name = qualifiedName;\n\t\tnode.nodeName = qualifiedName;\n\t\tnode.publicId = publicId || '';\n\t\tnode.systemId = systemId || '';\n\n\t\treturn node;\n\t}\n};\n\n\n/**\n * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-1950641247\n */\n\nfunction Node() {\n};\n\nNode.prototype = {\n\tfirstChild : null,\n\tlastChild : null,\n\tpreviousSibling : null,\n\tnextSibling : null,\n\tattributes : null,\n\tparentNode : null,\n\tchildNodes : null,\n\townerDocument : null,\n\tnodeValue : null,\n\tnamespaceURI : null,\n\tprefix : null,\n\tlocalName : null,\n\t// Modified in DOM Level 2:\n\tinsertBefore:function(newChild, refChild){//raises\n\t\treturn _insertBefore(this,newChild,refChild);\n\t},\n\treplaceChild:function(newChild, oldChild){//raises\n\t\t_insertBefore(this, newChild,oldChild, assertPreReplacementValidityInDocument);\n\t\tif(oldChild){\n\t\t\tthis.removeChild(oldChild);\n\t\t}\n\t},\n\tremoveChild:function(oldChild){\n\t\treturn _removeChild(this,oldChild);\n\t},\n\tappendChild:function(newChild){\n\t\treturn this.insertBefore(newChild,null);\n\t},\n\thasChildNodes:function(){\n\t\treturn this.firstChild != null;\n\t},\n\tcloneNode:function(deep){\n\t\treturn cloneNode(this.ownerDocument||this,this,deep);\n\t},\n\t// Modified in DOM Level 2:\n\tnormalize:function(){\n\t\tvar child = this.firstChild;\n\t\twhile(child){\n\t\t\tvar next = child.nextSibling;\n\t\t\tif(next && next.nodeType == TEXT_NODE && child.nodeType == TEXT_NODE){\n\t\t\t\tthis.removeChild(next);\n\t\t\t\tchild.appendData(next.data);\n\t\t\t}else{\n\t\t\t\tchild.normalize();\n\t\t\t\tchild = next;\n\t\t\t}\n\t\t}\n\t},\n \t// Introduced in DOM Level 2:\n\tisSupported:function(feature, version){\n\t\treturn this.ownerDocument.implementation.hasFeature(feature,version);\n\t},\n // Introduced in DOM Level 2:\n hasAttributes:function(){\n \treturn this.attributes.length>0;\n },\n\t/**\n\t * Look up the prefix associated to the given namespace URI, starting from this node.\n\t * **The default namespace declarations are ignored by this method.**\n\t * See Namespace Prefix Lookup for details on the algorithm used by this method.\n\t *\n\t * _Note: The implementation seems to be incomplete when compared to the algorithm described in the specs._\n\t *\n\t * @param {string | null} namespaceURI\n\t * @returns {string | null}\n\t * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#Node3-lookupNamespacePrefix\n\t * @see https://www.w3.org/TR/DOM-Level-3-Core/namespaces-algorithms.html#lookupNamespacePrefixAlgo\n\t * @see https://dom.spec.whatwg.org/#dom-node-lookupprefix\n\t * @see https://github.com/xmldom/xmldom/issues/322\n\t */\n lookupPrefix:function(namespaceURI){\n \tvar el = this;\n \twhile(el){\n \t\tvar map = el._nsMap;\n \t\t//console.dir(map)\n \t\tif(map){\n \t\t\tfor(var n in map){\n\t\t\t\t\t\tif (Object.prototype.hasOwnProperty.call(map, n) && map[n] === namespaceURI) {\n\t\t\t\t\t\t\treturn n;\n\t\t\t\t\t\t}\n \t\t\t}\n \t\t}\n \t\tel = el.nodeType == ATTRIBUTE_NODE?el.ownerDocument : el.parentNode;\n \t}\n \treturn null;\n },\n // Introduced in DOM Level 3:\n lookupNamespaceURI:function(prefix){\n \tvar el = this;\n \twhile(el){\n \t\tvar map = el._nsMap;\n \t\t//console.dir(map)\n \t\tif(map){\n \t\t\tif(Object.prototype.hasOwnProperty.call(map, prefix)){\n \t\t\t\treturn map[prefix] ;\n \t\t\t}\n \t\t}\n \t\tel = el.nodeType == ATTRIBUTE_NODE?el.ownerDocument : el.parentNode;\n \t}\n \treturn null;\n },\n // Introduced in DOM Level 3:\n isDefaultNamespace:function(namespaceURI){\n \tvar prefix = this.lookupPrefix(namespaceURI);\n \treturn prefix == null;\n }\n};\n\n\nfunction _xmlEncoder(c){\n\treturn c == '<' && '<' ||\n c == '>' && '>' ||\n c == '&' && '&' ||\n c == '\"' && '"' ||\n '&#'+c.charCodeAt()+';'\n}\n\n\ncopy(NodeType,Node);\ncopy(NodeType,Node.prototype);\n\n/**\n * @param callback return true for continue,false for break\n * @return boolean true: break visit;\n */\nfunction _visitNode(node,callback){\n\tif(callback(node)){\n\t\treturn true;\n\t}\n\tif(node = node.firstChild){\n\t\tdo{\n\t\t\tif(_visitNode(node,callback)){return true}\n }while(node=node.nextSibling)\n }\n}\n\n\n\nfunction Document(){\n\tthis.ownerDocument = this;\n}\n\nfunction _onAddAttribute(doc,el,newAttr){\n\tdoc && doc._inc++;\n\tvar ns = newAttr.namespaceURI ;\n\tif(ns === NAMESPACE.XMLNS){\n\t\t//update namespace\n\t\tel._nsMap[newAttr.prefix?newAttr.localName:''] = newAttr.value\n\t}\n}\n\nfunction _onRemoveAttribute(doc,el,newAttr,remove){\n\tdoc && doc._inc++;\n\tvar ns = newAttr.namespaceURI ;\n\tif(ns === NAMESPACE.XMLNS){\n\t\t//update namespace\n\t\tdelete el._nsMap[newAttr.prefix?newAttr.localName:'']\n\t}\n}\n\n/**\n * Updates `el.childNodes`, updating the indexed items and it's `length`.\n * Passing `newChild` means it will be appended.\n * Otherwise it's assumed that an item has been removed,\n * and `el.firstNode` and it's `.nextSibling` are used\n * to walk the current list of child nodes.\n *\n * @param {Document} doc\n * @param {Node} el\n * @param {Node} [newChild]\n * @private\n */\nfunction _onUpdateChild (doc, el, newChild) {\n\tif(doc && doc._inc){\n\t\tdoc._inc++;\n\t\t//update childNodes\n\t\tvar cs = el.childNodes;\n\t\tif (newChild) {\n\t\t\tcs[cs.length++] = newChild;\n\t\t} else {\n\t\t\tvar child = el.firstChild;\n\t\t\tvar i = 0;\n\t\t\twhile (child) {\n\t\t\t\tcs[i++] = child;\n\t\t\t\tchild = child.nextSibling;\n\t\t\t}\n\t\t\tcs.length = i;\n\t\t\tdelete cs[cs.length];\n\t\t}\n\t}\n}\n\n/**\n * Removes the connections between `parentNode` and `child`\n * and any existing `child.previousSibling` or `child.nextSibling`.\n *\n * @see https://github.com/xmldom/xmldom/issues/135\n * @see https://github.com/xmldom/xmldom/issues/145\n *\n * @param {Node} parentNode\n * @param {Node} child\n * @returns {Node} the child that was removed.\n * @private\n */\nfunction _removeChild (parentNode, child) {\n\tvar previous = child.previousSibling;\n\tvar next = child.nextSibling;\n\tif (previous) {\n\t\tprevious.nextSibling = next;\n\t} else {\n\t\tparentNode.firstChild = next;\n\t}\n\tif (next) {\n\t\tnext.previousSibling = previous;\n\t} else {\n\t\tparentNode.lastChild = previous;\n\t}\n\tchild.parentNode = null;\n\tchild.previousSibling = null;\n\tchild.nextSibling = null;\n\t_onUpdateChild(parentNode.ownerDocument, parentNode);\n\treturn child;\n}\n\n/**\n * Returns `true` if `node` can be a parent for insertion.\n * @param {Node} node\n * @returns {boolean}\n */\nfunction hasValidParentNodeType(node) {\n\treturn (\n\t\tnode &&\n\t\t(node.nodeType === Node.DOCUMENT_NODE || node.nodeType === Node.DOCUMENT_FRAGMENT_NODE || node.nodeType === Node.ELEMENT_NODE)\n\t);\n}\n\n/**\n * Returns `true` if `node` can be inserted according to it's `nodeType`.\n * @param {Node} node\n * @returns {boolean}\n */\nfunction hasInsertableNodeType(node) {\n\treturn (\n\t\tnode &&\n\t\t(isElementNode(node) ||\n\t\t\tisTextNode(node) ||\n\t\t\tisDocTypeNode(node) ||\n\t\t\tnode.nodeType === Node.DOCUMENT_FRAGMENT_NODE ||\n\t\t\tnode.nodeType === Node.COMMENT_NODE ||\n\t\t\tnode.nodeType === Node.PROCESSING_INSTRUCTION_NODE)\n\t);\n}\n\n/**\n * Returns true if `node` is a DOCTYPE node\n * @param {Node} node\n * @returns {boolean}\n */\nfunction isDocTypeNode(node) {\n\treturn node && node.nodeType === Node.DOCUMENT_TYPE_NODE;\n}\n\n/**\n * Returns true if the node is an element\n * @param {Node} node\n * @returns {boolean}\n */\nfunction isElementNode(node) {\n\treturn node && node.nodeType === Node.ELEMENT_NODE;\n}\n/**\n * Returns true if `node` is a text node\n * @param {Node} node\n * @returns {boolean}\n */\nfunction isTextNode(node) {\n\treturn node && node.nodeType === Node.TEXT_NODE;\n}\n\n/**\n * Check if en element node can be inserted before `child`, or at the end if child is falsy,\n * according to the presence and position of a doctype node on the same level.\n *\n * @param {Document} doc The document node\n * @param {Node} child the node that would become the nextSibling if the element would be inserted\n * @returns {boolean} `true` if an element can be inserted before child\n * @private\n * https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n */\nfunction isElementInsertionPossible(doc, child) {\n\tvar parentChildNodes = doc.childNodes || [];\n\tif (find(parentChildNodes, isElementNode) || isDocTypeNode(child)) {\n\t\treturn false;\n\t}\n\tvar docTypeNode = find(parentChildNodes, isDocTypeNode);\n\treturn !(child && docTypeNode && parentChildNodes.indexOf(docTypeNode) > parentChildNodes.indexOf(child));\n}\n\n/**\n * Check if en element node can be inserted before `child`, or at the end if child is falsy,\n * according to the presence and position of a doctype node on the same level.\n *\n * @param {Node} doc The document node\n * @param {Node} child the node that would become the nextSibling if the element would be inserted\n * @returns {boolean} `true` if an element can be inserted before child\n * @private\n * https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n */\nfunction isElementReplacementPossible(doc, child) {\n\tvar parentChildNodes = doc.childNodes || [];\n\n\tfunction hasElementChildThatIsNotChild(node) {\n\t\treturn isElementNode(node) && node !== child;\n\t}\n\n\tif (find(parentChildNodes, hasElementChildThatIsNotChild)) {\n\t\treturn false;\n\t}\n\tvar docTypeNode = find(parentChildNodes, isDocTypeNode);\n\treturn !(child && docTypeNode && parentChildNodes.indexOf(docTypeNode) > parentChildNodes.indexOf(child));\n}\n\n/**\n * @private\n * Steps 1-5 of the checks before inserting and before replacing a child are the same.\n *\n * @param {Node} parent the parent node to insert `node` into\n * @param {Node} node the node to insert\n * @param {Node=} child the node that should become the `nextSibling` of `node`\n * @returns {Node}\n * @throws DOMException for several node combinations that would create a DOM that is not well-formed.\n * @throws DOMException if `child` is provided but is not a child of `parent`.\n * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n * @see https://dom.spec.whatwg.org/#concept-node-replace\n */\nfunction assertPreInsertionValidity1to5(parent, node, child) {\n\t// 1. If `parent` is not a Document, DocumentFragment, or Element node, then throw a \"HierarchyRequestError\" DOMException.\n\tif (!hasValidParentNodeType(parent)) {\n\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Unexpected parent node type ' + parent.nodeType);\n\t}\n\t// 2. If `node` is a host-including inclusive ancestor of `parent`, then throw a \"HierarchyRequestError\" DOMException.\n\t// not implemented!\n\t// 3. If `child` is non-null and its parent is not `parent`, then throw a \"NotFoundError\" DOMException.\n\tif (child && child.parentNode !== parent) {\n\t\tthrow new DOMException(NOT_FOUND_ERR, 'child not in parent');\n\t}\n\tif (\n\t\t// 4. If `node` is not a DocumentFragment, DocumentType, Element, or CharacterData node, then throw a \"HierarchyRequestError\" DOMException.\n\t\t!hasInsertableNodeType(node) ||\n\t\t// 5. If either `node` is a Text node and `parent` is a document,\n\t\t// the sax parser currently adds top level text nodes, this will be fixed in 0.9.0\n\t\t// || (node.nodeType === Node.TEXT_NODE && parent.nodeType === Node.DOCUMENT_NODE)\n\t\t// or `node` is a doctype and `parent` is not a document, then throw a \"HierarchyRequestError\" DOMException.\n\t\t(isDocTypeNode(node) && parent.nodeType !== Node.DOCUMENT_NODE)\n\t) {\n\t\tthrow new DOMException(\n\t\t\tHIERARCHY_REQUEST_ERR,\n\t\t\t'Unexpected node type ' + node.nodeType + ' for parent node type ' + parent.nodeType\n\t\t);\n\t}\n}\n\n/**\n * @private\n * Step 6 of the checks before inserting and before replacing a child are different.\n *\n * @param {Document} parent the parent node to insert `node` into\n * @param {Node} node the node to insert\n * @param {Node | undefined} child the node that should become the `nextSibling` of `node`\n * @returns {Node}\n * @throws DOMException for several node combinations that would create a DOM that is not well-formed.\n * @throws DOMException if `child` is provided but is not a child of `parent`.\n * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n * @see https://dom.spec.whatwg.org/#concept-node-replace\n */\nfunction assertPreInsertionValidityInDocument(parent, node, child) {\n\tvar parentChildNodes = parent.childNodes || [];\n\tvar nodeChildNodes = node.childNodes || [];\n\n\t// DocumentFragment\n\tif (node.nodeType === Node.DOCUMENT_FRAGMENT_NODE) {\n\t\tvar nodeChildElements = nodeChildNodes.filter(isElementNode);\n\t\t// If node has more than one element child or has a Text node child.\n\t\tif (nodeChildElements.length > 1 || find(nodeChildNodes, isTextNode)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'More than one element or text in fragment');\n\t\t}\n\t\t// Otherwise, if `node` has one element child and either `parent` has an element child,\n\t\t// `child` is a doctype, or `child` is non-null and a doctype is following `child`.\n\t\tif (nodeChildElements.length === 1 && !isElementInsertionPossible(parent, child)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Element in fragment can not be inserted before doctype');\n\t\t}\n\t}\n\t// Element\n\tif (isElementNode(node)) {\n\t\t// `parent` has an element child, `child` is a doctype,\n\t\t// or `child` is non-null and a doctype is following `child`.\n\t\tif (!isElementInsertionPossible(parent, child)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Only one element can be added and only after doctype');\n\t\t}\n\t}\n\t// DocumentType\n\tif (isDocTypeNode(node)) {\n\t\t// `parent` has a doctype child,\n\t\tif (find(parentChildNodes, isDocTypeNode)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Only one doctype is allowed');\n\t\t}\n\t\tvar parentElementChild = find(parentChildNodes, isElementNode);\n\t\t// `child` is non-null and an element is preceding `child`,\n\t\tif (child && parentChildNodes.indexOf(parentElementChild) < parentChildNodes.indexOf(child)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can only be inserted before an element');\n\t\t}\n\t\t// or `child` is null and `parent` has an element child.\n\t\tif (!child && parentElementChild) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can not be appended since element is present');\n\t\t}\n\t}\n}\n\n/**\n * @private\n * Step 6 of the checks before inserting and before replacing a child are different.\n *\n * @param {Document} parent the parent node to insert `node` into\n * @param {Node} node the node to insert\n * @param {Node | undefined} child the node that should become the `nextSibling` of `node`\n * @returns {Node}\n * @throws DOMException for several node combinations that would create a DOM that is not well-formed.\n * @throws DOMException if `child` is provided but is not a child of `parent`.\n * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n * @see https://dom.spec.whatwg.org/#concept-node-replace\n */\nfunction assertPreReplacementValidityInDocument(parent, node, child) {\n\tvar parentChildNodes = parent.childNodes || [];\n\tvar nodeChildNodes = node.childNodes || [];\n\n\t// DocumentFragment\n\tif (node.nodeType === Node.DOCUMENT_FRAGMENT_NODE) {\n\t\tvar nodeChildElements = nodeChildNodes.filter(isElementNode);\n\t\t// If `node` has more than one element child or has a Text node child.\n\t\tif (nodeChildElements.length > 1 || find(nodeChildNodes, isTextNode)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'More than one element or text in fragment');\n\t\t}\n\t\t// Otherwise, if `node` has one element child and either `parent` has an element child that is not `child` or a doctype is following `child`.\n\t\tif (nodeChildElements.length === 1 && !isElementReplacementPossible(parent, child)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Element in fragment can not be inserted before doctype');\n\t\t}\n\t}\n\t// Element\n\tif (isElementNode(node)) {\n\t\t// `parent` has an element child that is not `child` or a doctype is following `child`.\n\t\tif (!isElementReplacementPossible(parent, child)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Only one element can be added and only after doctype');\n\t\t}\n\t}\n\t// DocumentType\n\tif (isDocTypeNode(node)) {\n\t\tfunction hasDoctypeChildThatIsNotChild(node) {\n\t\t\treturn isDocTypeNode(node) && node !== child;\n\t\t}\n\n\t\t// `parent` has a doctype child that is not `child`,\n\t\tif (find(parentChildNodes, hasDoctypeChildThatIsNotChild)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Only one doctype is allowed');\n\t\t}\n\t\tvar parentElementChild = find(parentChildNodes, isElementNode);\n\t\t// or an element is preceding `child`.\n\t\tif (child && parentChildNodes.indexOf(parentElementChild) < parentChildNodes.indexOf(child)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can only be inserted before an element');\n\t\t}\n\t}\n}\n\n/**\n * @private\n * @param {Node} parent the parent node to insert `node` into\n * @param {Node} node the node to insert\n * @param {Node=} child the node that should become the `nextSibling` of `node`\n * @returns {Node}\n * @throws DOMException for several node combinations that would create a DOM that is not well-formed.\n * @throws DOMException if `child` is provided but is not a child of `parent`.\n * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n */\nfunction _insertBefore(parent, node, child, _inDocumentAssertion) {\n\t// To ensure pre-insertion validity of a node into a parent before a child, run these steps:\n\tassertPreInsertionValidity1to5(parent, node, child);\n\n\t// If parent is a document, and any of the statements below, switched on the interface node implements,\n\t// are true, then throw a \"HierarchyRequestError\" DOMException.\n\tif (parent.nodeType === Node.DOCUMENT_NODE) {\n\t\t(_inDocumentAssertion || assertPreInsertionValidityInDocument)(parent, node, child);\n\t}\n\n\tvar cp = node.parentNode;\n\tif(cp){\n\t\tcp.removeChild(node);//remove and update\n\t}\n\tif(node.nodeType === DOCUMENT_FRAGMENT_NODE){\n\t\tvar newFirst = node.firstChild;\n\t\tif (newFirst == null) {\n\t\t\treturn node;\n\t\t}\n\t\tvar newLast = node.lastChild;\n\t}else{\n\t\tnewFirst = newLast = node;\n\t}\n\tvar pre = child ? child.previousSibling : parent.lastChild;\n\n\tnewFirst.previousSibling = pre;\n\tnewLast.nextSibling = child;\n\n\n\tif(pre){\n\t\tpre.nextSibling = newFirst;\n\t}else{\n\t\tparent.firstChild = newFirst;\n\t}\n\tif(child == null){\n\t\tparent.lastChild = newLast;\n\t}else{\n\t\tchild.previousSibling = newLast;\n\t}\n\tdo{\n\t\tnewFirst.parentNode = parent;\n\t}while(newFirst !== newLast && (newFirst= newFirst.nextSibling))\n\t_onUpdateChild(parent.ownerDocument||parent, parent);\n\t//console.log(parent.lastChild.nextSibling == null)\n\tif (node.nodeType == DOCUMENT_FRAGMENT_NODE) {\n\t\tnode.firstChild = node.lastChild = null;\n\t}\n\treturn node;\n}\n\n/**\n * Appends `newChild` to `parentNode`.\n * If `newChild` is already connected to a `parentNode` it is first removed from it.\n *\n * @see https://github.com/xmldom/xmldom/issues/135\n * @see https://github.com/xmldom/xmldom/issues/145\n * @param {Node} parentNode\n * @param {Node} newChild\n * @returns {Node}\n * @private\n */\nfunction _appendSingleChild (parentNode, newChild) {\n\tif (newChild.parentNode) {\n\t\tnewChild.parentNode.removeChild(newChild);\n\t}\n\tnewChild.parentNode = parentNode;\n\tnewChild.previousSibling = parentNode.lastChild;\n\tnewChild.nextSibling = null;\n\tif (newChild.previousSibling) {\n\t\tnewChild.previousSibling.nextSibling = newChild;\n\t} else {\n\t\tparentNode.firstChild = newChild;\n\t}\n\tparentNode.lastChild = newChild;\n\t_onUpdateChild(parentNode.ownerDocument, parentNode, newChild);\n\treturn newChild;\n}\n\nDocument.prototype = {\n\t//implementation : null,\n\tnodeName : '#document',\n\tnodeType : DOCUMENT_NODE,\n\t/**\n\t * The DocumentType node of the document.\n\t *\n\t * @readonly\n\t * @type DocumentType\n\t */\n\tdoctype : null,\n\tdocumentElement : null,\n\t_inc : 1,\n\n\tinsertBefore : function(newChild, refChild){//raises\n\t\tif(newChild.nodeType == DOCUMENT_FRAGMENT_NODE){\n\t\t\tvar child = newChild.firstChild;\n\t\t\twhile(child){\n\t\t\t\tvar next = child.nextSibling;\n\t\t\t\tthis.insertBefore(child,refChild);\n\t\t\t\tchild = next;\n\t\t\t}\n\t\t\treturn newChild;\n\t\t}\n\t\t_insertBefore(this, newChild, refChild);\n\t\tnewChild.ownerDocument = this;\n\t\tif (this.documentElement === null && newChild.nodeType === ELEMENT_NODE) {\n\t\t\tthis.documentElement = newChild;\n\t\t}\n\n\t\treturn newChild;\n\t},\n\tremoveChild : function(oldChild){\n\t\tif(this.documentElement == oldChild){\n\t\t\tthis.documentElement = null;\n\t\t}\n\t\treturn _removeChild(this,oldChild);\n\t},\n\treplaceChild: function (newChild, oldChild) {\n\t\t//raises\n\t\t_insertBefore(this, newChild, oldChild, assertPreReplacementValidityInDocument);\n\t\tnewChild.ownerDocument = this;\n\t\tif (oldChild) {\n\t\t\tthis.removeChild(oldChild);\n\t\t}\n\t\tif (isElementNode(newChild)) {\n\t\t\tthis.documentElement = newChild;\n\t\t}\n\t},\n\t// Introduced in DOM Level 2:\n\timportNode : function(importedNode,deep){\n\t\treturn importNode(this,importedNode,deep);\n\t},\n\t// Introduced in DOM Level 2:\n\tgetElementById :\tfunction(id){\n\t\tvar rtv = null;\n\t\t_visitNode(this.documentElement,function(node){\n\t\t\tif(node.nodeType == ELEMENT_NODE){\n\t\t\t\tif(node.getAttribute('id') == id){\n\t\t\t\t\trtv = node;\n\t\t\t\t\treturn true;\n\t\t\t\t}\n\t\t\t}\n\t\t})\n\t\treturn rtv;\n\t},\n\n\t/**\n\t * The `getElementsByClassName` method of `Document` interface returns an array-like object\n\t * of all child elements which have **all** of the given class name(s).\n\t *\n\t * Returns an empty list if `classeNames` is an empty string or only contains HTML white space characters.\n\t *\n\t *\n\t * Warning: This is a live LiveNodeList.\n\t * Changes in the DOM will reflect in the array as the changes occur.\n\t * If an element selected by this array no longer qualifies for the selector,\n\t * it will automatically be removed. Be aware of this for iteration purposes.\n\t *\n\t * @param {string} classNames is a string representing the class name(s) to match; multiple class names are separated by (ASCII-)whitespace\n\t *\n\t * @see https://developer.mozilla.org/en-US/docs/Web/API/Document/getElementsByClassName\n\t * @see https://dom.spec.whatwg.org/#concept-getelementsbyclassname\n\t */\n\tgetElementsByClassName: function(classNames) {\n\t\tvar classNamesSet = toOrderedSet(classNames)\n\t\treturn new LiveNodeList(this, function(base) {\n\t\t\tvar ls = [];\n\t\t\tif (classNamesSet.length > 0) {\n\t\t\t\t_visitNode(base.documentElement, function(node) {\n\t\t\t\t\tif(node !== base && node.nodeType === ELEMENT_NODE) {\n\t\t\t\t\t\tvar nodeClassNames = node.getAttribute('class')\n\t\t\t\t\t\t// can be null if the attribute does not exist\n\t\t\t\t\t\tif (nodeClassNames) {\n\t\t\t\t\t\t\t// before splitting and iterating just compare them for the most common case\n\t\t\t\t\t\t\tvar matches = classNames === nodeClassNames;\n\t\t\t\t\t\t\tif (!matches) {\n\t\t\t\t\t\t\t\tvar nodeClassNamesSet = toOrderedSet(nodeClassNames)\n\t\t\t\t\t\t\t\tmatches = classNamesSet.every(arrayIncludes(nodeClassNamesSet))\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\tif(matches) {\n\t\t\t\t\t\t\t\tls.push(node);\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t});\n\t\t\t}\n\t\t\treturn ls;\n\t\t});\n\t},\n\n\t//document factory method:\n\tcreateElement :\tfunction(tagName){\n\t\tvar node = new Element();\n\t\tnode.ownerDocument = this;\n\t\tnode.nodeName = tagName;\n\t\tnode.tagName = tagName;\n\t\tnode.localName = tagName;\n\t\tnode.childNodes = new NodeList();\n\t\tvar attrs\t= node.attributes = new NamedNodeMap();\n\t\tattrs._ownerElement = node;\n\t\treturn node;\n\t},\n\tcreateDocumentFragment :\tfunction(){\n\t\tvar node = new DocumentFragment();\n\t\tnode.ownerDocument = this;\n\t\tnode.childNodes = new NodeList();\n\t\treturn node;\n\t},\n\tcreateTextNode :\tfunction(data){\n\t\tvar node = new Text();\n\t\tnode.ownerDocument = this;\n\t\tnode.appendData(data)\n\t\treturn node;\n\t},\n\tcreateComment :\tfunction(data){\n\t\tvar node = new Comment();\n\t\tnode.ownerDocument = this;\n\t\tnode.appendData(data)\n\t\treturn node;\n\t},\n\tcreateCDATASection :\tfunction(data){\n\t\tvar node = new CDATASection();\n\t\tnode.ownerDocument = this;\n\t\tnode.appendData(data)\n\t\treturn node;\n\t},\n\tcreateProcessingInstruction :\tfunction(target,data){\n\t\tvar node = new ProcessingInstruction();\n\t\tnode.ownerDocument = this;\n\t\tnode.tagName = node.nodeName = node.target = target;\n\t\tnode.nodeValue = node.data = data;\n\t\treturn node;\n\t},\n\tcreateAttribute :\tfunction(name){\n\t\tvar node = new Attr();\n\t\tnode.ownerDocument\t= this;\n\t\tnode.name = name;\n\t\tnode.nodeName\t= name;\n\t\tnode.localName = name;\n\t\tnode.specified = true;\n\t\treturn node;\n\t},\n\tcreateEntityReference :\tfunction(name){\n\t\tvar node = new EntityReference();\n\t\tnode.ownerDocument\t= this;\n\t\tnode.nodeName\t= name;\n\t\treturn node;\n\t},\n\t// Introduced in DOM Level 2:\n\tcreateElementNS :\tfunction(namespaceURI,qualifiedName){\n\t\tvar node = new Element();\n\t\tvar pl = qualifiedName.split(':');\n\t\tvar attrs\t= node.attributes = new NamedNodeMap();\n\t\tnode.childNodes = new NodeList();\n\t\tnode.ownerDocument = this;\n\t\tnode.nodeName = qualifiedName;\n\t\tnode.tagName = qualifiedName;\n\t\tnode.namespaceURI = namespaceURI;\n\t\tif(pl.length == 2){\n\t\t\tnode.prefix = pl[0];\n\t\t\tnode.localName = pl[1];\n\t\t}else{\n\t\t\t//el.prefix = null;\n\t\t\tnode.localName = qualifiedName;\n\t\t}\n\t\tattrs._ownerElement = node;\n\t\treturn node;\n\t},\n\t// Introduced in DOM Level 2:\n\tcreateAttributeNS :\tfunction(namespaceURI,qualifiedName){\n\t\tvar node = new Attr();\n\t\tvar pl = qualifiedName.split(':');\n\t\tnode.ownerDocument = this;\n\t\tnode.nodeName = qualifiedName;\n\t\tnode.name = qualifiedName;\n\t\tnode.namespaceURI = namespaceURI;\n\t\tnode.specified = true;\n\t\tif(pl.length == 2){\n\t\t\tnode.prefix = pl[0];\n\t\t\tnode.localName = pl[1];\n\t\t}else{\n\t\t\t//el.prefix = null;\n\t\t\tnode.localName = qualifiedName;\n\t\t}\n\t\treturn node;\n\t}\n};\n_extends(Document,Node);\n\n\nfunction Element() {\n\tthis._nsMap = {};\n};\nElement.prototype = {\n\tnodeType : ELEMENT_NODE,\n\thasAttribute : function(name){\n\t\treturn this.getAttributeNode(name)!=null;\n\t},\n\tgetAttribute : function(name){\n\t\tvar attr = this.getAttributeNode(name);\n\t\treturn attr && attr.value || '';\n\t},\n\tgetAttributeNode : function(name){\n\t\treturn this.attributes.getNamedItem(name);\n\t},\n\tsetAttribute : function(name, value){\n\t\tvar attr = this.ownerDocument.createAttribute(name);\n\t\tattr.value = attr.nodeValue = \"\" + value;\n\t\tthis.setAttributeNode(attr)\n\t},\n\tremoveAttribute : function(name){\n\t\tvar attr = this.getAttributeNode(name)\n\t\tattr && this.removeAttributeNode(attr);\n\t},\n\n\t//four real opeartion method\n\tappendChild:function(newChild){\n\t\tif(newChild.nodeType === DOCUMENT_FRAGMENT_NODE){\n\t\t\treturn this.insertBefore(newChild,null);\n\t\t}else{\n\t\t\treturn _appendSingleChild(this,newChild);\n\t\t}\n\t},\n\tsetAttributeNode : function(newAttr){\n\t\treturn this.attributes.setNamedItem(newAttr);\n\t},\n\tsetAttributeNodeNS : function(newAttr){\n\t\treturn this.attributes.setNamedItemNS(newAttr);\n\t},\n\tremoveAttributeNode : function(oldAttr){\n\t\t//console.log(this == oldAttr.ownerElement)\n\t\treturn this.attributes.removeNamedItem(oldAttr.nodeName);\n\t},\n\t//get real attribute name,and remove it by removeAttributeNode\n\tremoveAttributeNS : function(namespaceURI, localName){\n\t\tvar old = this.getAttributeNodeNS(namespaceURI, localName);\n\t\told && this.removeAttributeNode(old);\n\t},\n\n\thasAttributeNS : function(namespaceURI, localName){\n\t\treturn this.getAttributeNodeNS(namespaceURI, localName)!=null;\n\t},\n\tgetAttributeNS : function(namespaceURI, localName){\n\t\tvar attr = this.getAttributeNodeNS(namespaceURI, localName);\n\t\treturn attr && attr.value || '';\n\t},\n\tsetAttributeNS : function(namespaceURI, qualifiedName, value){\n\t\tvar attr = this.ownerDocument.createAttributeNS(namespaceURI, qualifiedName);\n\t\tattr.value = attr.nodeValue = \"\" + value;\n\t\tthis.setAttributeNode(attr)\n\t},\n\tgetAttributeNodeNS : function(namespaceURI, localName){\n\t\treturn this.attributes.getNamedItemNS(namespaceURI, localName);\n\t},\n\n\tgetElementsByTagName : function(tagName){\n\t\treturn new LiveNodeList(this,function(base){\n\t\t\tvar ls = [];\n\t\t\t_visitNode(base,function(node){\n\t\t\t\tif(node !== base && node.nodeType == ELEMENT_NODE && (tagName === '*' || node.tagName == tagName)){\n\t\t\t\t\tls.push(node);\n\t\t\t\t}\n\t\t\t});\n\t\t\treturn ls;\n\t\t});\n\t},\n\tgetElementsByTagNameNS : function(namespaceURI, localName){\n\t\treturn new LiveNodeList(this,function(base){\n\t\t\tvar ls = [];\n\t\t\t_visitNode(base,function(node){\n\t\t\t\tif(node !== base && node.nodeType === ELEMENT_NODE && (namespaceURI === '*' || node.namespaceURI === namespaceURI) && (localName === '*' || node.localName == localName)){\n\t\t\t\t\tls.push(node);\n\t\t\t\t}\n\t\t\t});\n\t\t\treturn ls;\n\n\t\t});\n\t}\n};\nDocument.prototype.getElementsByTagName = Element.prototype.getElementsByTagName;\nDocument.prototype.getElementsByTagNameNS = Element.prototype.getElementsByTagNameNS;\n\n\n_extends(Element,Node);\nfunction Attr() {\n};\nAttr.prototype.nodeType = ATTRIBUTE_NODE;\n_extends(Attr,Node);\n\n\nfunction CharacterData() {\n};\nCharacterData.prototype = {\n\tdata : '',\n\tsubstringData : function(offset, count) {\n\t\treturn this.data.substring(offset, offset+count);\n\t},\n\tappendData: function(text) {\n\t\ttext = this.data+text;\n\t\tthis.nodeValue = this.data = text;\n\t\tthis.length = text.length;\n\t},\n\tinsertData: function(offset,text) {\n\t\tthis.replaceData(offset,0,text);\n\n\t},\n\tappendChild:function(newChild){\n\t\tthrow new Error(ExceptionMessage[HIERARCHY_REQUEST_ERR])\n\t},\n\tdeleteData: function(offset, count) {\n\t\tthis.replaceData(offset,count,\"\");\n\t},\n\treplaceData: function(offset, count, text) {\n\t\tvar start = this.data.substring(0,offset);\n\t\tvar end = this.data.substring(offset+count);\n\t\ttext = start + text + end;\n\t\tthis.nodeValue = this.data = text;\n\t\tthis.length = text.length;\n\t}\n}\n_extends(CharacterData,Node);\nfunction Text() {\n};\nText.prototype = {\n\tnodeName : \"#text\",\n\tnodeType : TEXT_NODE,\n\tsplitText : function(offset) {\n\t\tvar text = this.data;\n\t\tvar newText = text.substring(offset);\n\t\ttext = text.substring(0, offset);\n\t\tthis.data = this.nodeValue = text;\n\t\tthis.length = text.length;\n\t\tvar newNode = this.ownerDocument.createTextNode(newText);\n\t\tif(this.parentNode){\n\t\t\tthis.parentNode.insertBefore(newNode, this.nextSibling);\n\t\t}\n\t\treturn newNode;\n\t}\n}\n_extends(Text,CharacterData);\nfunction Comment() {\n};\nComment.prototype = {\n\tnodeName : \"#comment\",\n\tnodeType : COMMENT_NODE\n}\n_extends(Comment,CharacterData);\n\nfunction CDATASection() {\n};\nCDATASection.prototype = {\n\tnodeName : \"#cdata-section\",\n\tnodeType : CDATA_SECTION_NODE\n}\n_extends(CDATASection,CharacterData);\n\n\nfunction DocumentType() {\n};\nDocumentType.prototype.nodeType = DOCUMENT_TYPE_NODE;\n_extends(DocumentType,Node);\n\nfunction Notation() {\n};\nNotation.prototype.nodeType = NOTATION_NODE;\n_extends(Notation,Node);\n\nfunction Entity() {\n};\nEntity.prototype.nodeType = ENTITY_NODE;\n_extends(Entity,Node);\n\nfunction EntityReference() {\n};\nEntityReference.prototype.nodeType = ENTITY_REFERENCE_NODE;\n_extends(EntityReference,Node);\n\nfunction DocumentFragment() {\n};\nDocumentFragment.prototype.nodeName =\t\"#document-fragment\";\nDocumentFragment.prototype.nodeType =\tDOCUMENT_FRAGMENT_NODE;\n_extends(DocumentFragment,Node);\n\n\nfunction ProcessingInstruction() {\n}\nProcessingInstruction.prototype.nodeType = PROCESSING_INSTRUCTION_NODE;\n_extends(ProcessingInstruction,Node);\nfunction XMLSerializer(){}\nXMLSerializer.prototype.serializeToString = function(node,isHtml,nodeFilter){\n\treturn nodeSerializeToString.call(node,isHtml,nodeFilter);\n}\nNode.prototype.toString = nodeSerializeToString;\nfunction nodeSerializeToString(isHtml,nodeFilter){\n\tvar buf = [];\n\tvar refNode = this.nodeType == 9 && this.documentElement || this;\n\tvar prefix = refNode.prefix;\n\tvar uri = refNode.namespaceURI;\n\n\tif(uri && prefix == null){\n\t\t//console.log(prefix)\n\t\tvar prefix = refNode.lookupPrefix(uri);\n\t\tif(prefix == null){\n\t\t\t//isHTML = true;\n\t\t\tvar visibleNamespaces=[\n\t\t\t{namespace:uri,prefix:null}\n\t\t\t//{namespace:uri,prefix:''}\n\t\t\t]\n\t\t}\n\t}\n\tserializeToString(this,buf,isHtml,nodeFilter,visibleNamespaces);\n\t//console.log('###',this.nodeType,uri,prefix,buf.join(''))\n\treturn buf.join('');\n}\n\nfunction needNamespaceDefine(node, isHTML, visibleNamespaces) {\n\tvar prefix = node.prefix || '';\n\tvar uri = node.namespaceURI;\n\t// According to [Namespaces in XML 1.0](https://www.w3.org/TR/REC-xml-names/#ns-using) ,\n\t// and more specifically https://www.w3.org/TR/REC-xml-names/#nsc-NoPrefixUndecl :\n\t// > In a namespace declaration for a prefix [...], the attribute value MUST NOT be empty.\n\t// in a similar manner [Namespaces in XML 1.1](https://www.w3.org/TR/xml-names11/#ns-using)\n\t// and more specifically https://www.w3.org/TR/xml-names11/#nsc-NSDeclared :\n\t// > [...] Furthermore, the attribute value [...] must not be an empty string.\n\t// so serializing empty namespace value like xmlns:ds=\"\" would produce an invalid XML document.\n\tif (!uri) {\n\t\treturn false;\n\t}\n\tif (prefix === \"xml\" && uri === NAMESPACE.XML || uri === NAMESPACE.XMLNS) {\n\t\treturn false;\n\t}\n\n\tvar i = visibleNamespaces.length\n\twhile (i--) {\n\t\tvar ns = visibleNamespaces[i];\n\t\t// get namespace prefix\n\t\tif (ns.prefix === prefix) {\n\t\t\treturn ns.namespace !== uri;\n\t\t}\n\t}\n\treturn true;\n}\n/**\n * Well-formed constraint: No < in Attribute Values\n * > The replacement text of any entity referred to directly or indirectly\n * > in an attribute value must not contain a <.\n * @see https://www.w3.org/TR/xml11/#CleanAttrVals\n * @see https://www.w3.org/TR/xml11/#NT-AttValue\n *\n * Literal whitespace other than space that appear in attribute values\n * are serialized as their entity references, so they will be preserved.\n * (In contrast to whitespace literals in the input which are normalized to spaces)\n * @see https://www.w3.org/TR/xml11/#AVNormalize\n * @see https://w3c.github.io/DOM-Parsing/#serializing-an-element-s-attributes\n */\nfunction addSerializedAttribute(buf, qualifiedName, value) {\n\tbuf.push(' ', qualifiedName, '=\"', value.replace(/[<>&\"\\t\\n\\r]/g, _xmlEncoder), '\"')\n}\n\nfunction serializeToString(node,buf,isHTML,nodeFilter,visibleNamespaces){\n\tif (!visibleNamespaces) {\n\t\tvisibleNamespaces = [];\n\t}\n\n\tif(nodeFilter){\n\t\tnode = nodeFilter(node);\n\t\tif(node){\n\t\t\tif(typeof node == 'string'){\n\t\t\t\tbuf.push(node);\n\t\t\t\treturn;\n\t\t\t}\n\t\t}else{\n\t\t\treturn;\n\t\t}\n\t\t//buf.sort.apply(attrs, attributeSorter);\n\t}\n\n\tswitch(node.nodeType){\n\tcase ELEMENT_NODE:\n\t\tvar attrs = node.attributes;\n\t\tvar len = attrs.length;\n\t\tvar child = node.firstChild;\n\t\tvar nodeName = node.tagName;\n\n\t\tisHTML = NAMESPACE.isHTML(node.namespaceURI) || isHTML\n\n\t\tvar prefixedNodeName = nodeName\n\t\tif (!isHTML && !node.prefix && node.namespaceURI) {\n\t\t\tvar defaultNS\n\t\t\t// lookup current default ns from `xmlns` attribute\n\t\t\tfor (var ai = 0; ai < attrs.length; ai++) {\n\t\t\t\tif (attrs.item(ai).name === 'xmlns') {\n\t\t\t\t\tdefaultNS = attrs.item(ai).value\n\t\t\t\t\tbreak\n\t\t\t\t}\n\t\t\t}\n\t\t\tif (!defaultNS) {\n\t\t\t\t// lookup current default ns in visibleNamespaces\n\t\t\t\tfor (var nsi = visibleNamespaces.length - 1; nsi >= 0; nsi--) {\n\t\t\t\t\tvar namespace = visibleNamespaces[nsi]\n\t\t\t\t\tif (namespace.prefix === '' && namespace.namespace === node.namespaceURI) {\n\t\t\t\t\t\tdefaultNS = namespace.namespace\n\t\t\t\t\t\tbreak\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t\tif (defaultNS !== node.namespaceURI) {\n\t\t\t\tfor (var nsi = visibleNamespaces.length - 1; nsi >= 0; nsi--) {\n\t\t\t\t\tvar namespace = visibleNamespaces[nsi]\n\t\t\t\t\tif (namespace.namespace === node.namespaceURI) {\n\t\t\t\t\t\tif (namespace.prefix) {\n\t\t\t\t\t\t\tprefixedNodeName = namespace.prefix + ':' + nodeName\n\t\t\t\t\t\t}\n\t\t\t\t\t\tbreak\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tbuf.push('<', prefixedNodeName);\n\n\t\tfor(var i=0;i');\n\t\t\t//if is cdata child node\n\t\t\tif(isHTML && /^script$/i.test(nodeName)){\n\t\t\t\twhile(child){\n\t\t\t\t\tif(child.data){\n\t\t\t\t\t\tbuf.push(child.data);\n\t\t\t\t\t}else{\n\t\t\t\t\t\tserializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());\n\t\t\t\t\t}\n\t\t\t\t\tchild = child.nextSibling;\n\t\t\t\t}\n\t\t\t}else\n\t\t\t{\n\t\t\t\twhile(child){\n\t\t\t\t\tserializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());\n\t\t\t\t\tchild = child.nextSibling;\n\t\t\t\t}\n\t\t\t}\n\t\t\tbuf.push('');\n\t\t}else{\n\t\t\tbuf.push('/>');\n\t\t}\n\t\t// remove added visible namespaces\n\t\t//visibleNamespaces.length = startVisibleNamespaces;\n\t\treturn;\n\tcase DOCUMENT_NODE:\n\tcase DOCUMENT_FRAGMENT_NODE:\n\t\tvar child = node.firstChild;\n\t\twhile(child){\n\t\t\tserializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());\n\t\t\tchild = child.nextSibling;\n\t\t}\n\t\treturn;\n\tcase ATTRIBUTE_NODE:\n\t\treturn addSerializedAttribute(buf, node.name, node.value);\n\tcase TEXT_NODE:\n\t\t/**\n\t\t * The ampersand character (&) and the left angle bracket (<) must not appear in their literal form,\n\t\t * except when used as markup delimiters, or within a comment, a processing instruction, or a CDATA section.\n\t\t * If they are needed elsewhere, they must be escaped using either numeric character references or the strings\n\t\t * `&` and `<` respectively.\n\t\t * The right angle bracket (>) may be represented using the string \" > \", and must, for compatibility,\n\t\t * be escaped using either `>` or a character reference when it appears in the string `]]>` in content,\n\t\t * when that string is not marking the end of a CDATA section.\n\t\t *\n\t\t * In the content of elements, character data is any string of characters\n\t\t * which does not contain the start-delimiter of any markup\n\t\t * and does not include the CDATA-section-close delimiter, `]]>`.\n\t\t *\n\t\t * @see https://www.w3.org/TR/xml/#NT-CharData\n\t\t * @see https://w3c.github.io/DOM-Parsing/#xml-serializing-a-text-node\n\t\t */\n\t\treturn buf.push(node.data\n\t\t\t.replace(/[<&>]/g,_xmlEncoder)\n\t\t);\n\tcase CDATA_SECTION_NODE:\n\t\treturn buf.push( '');\n\tcase COMMENT_NODE:\n\t\treturn buf.push( \"\");\n\tcase DOCUMENT_TYPE_NODE:\n\t\tvar pubid = node.publicId;\n\t\tvar sysid = node.systemId;\n\t\tbuf.push('');\n\t\t}else if(sysid && sysid!='.'){\n\t\t\tbuf.push(' SYSTEM ', sysid, '>');\n\t\t}else{\n\t\t\tvar sub = node.internalSubset;\n\t\t\tif(sub){\n\t\t\t\tbuf.push(\" [\",sub,\"]\");\n\t\t\t}\n\t\t\tbuf.push(\">\");\n\t\t}\n\t\treturn;\n\tcase PROCESSING_INSTRUCTION_NODE:\n\t\treturn buf.push( \"\");\n\tcase ENTITY_REFERENCE_NODE:\n\t\treturn buf.push( '&',node.nodeName,';');\n\t//case ENTITY_NODE:\n\t//case NOTATION_NODE:\n\tdefault:\n\t\tbuf.push('??',node.nodeName);\n\t}\n}\nfunction importNode(doc,node,deep){\n\tvar node2;\n\tswitch (node.nodeType) {\n\tcase ELEMENT_NODE:\n\t\tnode2 = node.cloneNode(false);\n\t\tnode2.ownerDocument = doc;\n\t\t//var attrs = node2.attributes;\n\t\t//var len = attrs.length;\n\t\t//for(var i=0;i',\n\tlt: '<',\n\tquot: '\"',\n});\n\n/**\n * A map of all entities that are detected in an HTML document.\n * They contain all entries from `XML_ENTITIES`.\n *\n * @see XML_ENTITIES\n * @see DOMParser.parseFromString\n * @see DOMImplementation.prototype.createHTMLDocument\n * @see https://html.spec.whatwg.org/#named-character-references WHATWG HTML(5) Spec\n * @see https://html.spec.whatwg.org/entities.json JSON\n * @see https://www.w3.org/TR/xml-entity-names/ W3C XML Entity Names\n * @see https://www.w3.org/TR/html4/sgml/entities.html W3C HTML4/SGML\n * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Character_entity_references_in_HTML Wikipedia (HTML)\n * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Entities_representing_special_characters_in_XHTML Wikpedia (XHTML)\n */\nexports.HTML_ENTITIES = freeze({\n\tAacute: '\\u00C1',\n\taacute: '\\u00E1',\n\tAbreve: '\\u0102',\n\tabreve: '\\u0103',\n\tac: '\\u223E',\n\tacd: '\\u223F',\n\tacE: '\\u223E\\u0333',\n\tAcirc: '\\u00C2',\n\tacirc: '\\u00E2',\n\tacute: '\\u00B4',\n\tAcy: '\\u0410',\n\tacy: '\\u0430',\n\tAElig: '\\u00C6',\n\taelig: '\\u00E6',\n\taf: '\\u2061',\n\tAfr: '\\uD835\\uDD04',\n\tafr: '\\uD835\\uDD1E',\n\tAgrave: '\\u00C0',\n\tagrave: '\\u00E0',\n\talefsym: '\\u2135',\n\taleph: '\\u2135',\n\tAlpha: '\\u0391',\n\talpha: '\\u03B1',\n\tAmacr: '\\u0100',\n\tamacr: '\\u0101',\n\tamalg: '\\u2A3F',\n\tAMP: '\\u0026',\n\tamp: '\\u0026',\n\tAnd: '\\u2A53',\n\tand: '\\u2227',\n\tandand: '\\u2A55',\n\tandd: '\\u2A5C',\n\tandslope: '\\u2A58',\n\tandv: '\\u2A5A',\n\tang: '\\u2220',\n\tange: '\\u29A4',\n\tangle: '\\u2220',\n\tangmsd: '\\u2221',\n\tangmsdaa: '\\u29A8',\n\tangmsdab: '\\u29A9',\n\tangmsdac: '\\u29AA',\n\tangmsdad: '\\u29AB',\n\tangmsdae: '\\u29AC',\n\tangmsdaf: '\\u29AD',\n\tangmsdag: '\\u29AE',\n\tangmsdah: '\\u29AF',\n\tangrt: '\\u221F',\n\tangrtvb: '\\u22BE',\n\tangrtvbd: '\\u299D',\n\tangsph: '\\u2222',\n\tangst: '\\u00C5',\n\tangzarr: '\\u237C',\n\tAogon: '\\u0104',\n\taogon: '\\u0105',\n\tAopf: '\\uD835\\uDD38',\n\taopf: '\\uD835\\uDD52',\n\tap: '\\u2248',\n\tapacir: '\\u2A6F',\n\tapE: '\\u2A70',\n\tape: '\\u224A',\n\tapid: '\\u224B',\n\tapos: '\\u0027',\n\tApplyFunction: '\\u2061',\n\tapprox: '\\u2248',\n\tapproxeq: '\\u224A',\n\tAring: '\\u00C5',\n\taring: '\\u00E5',\n\tAscr: '\\uD835\\uDC9C',\n\tascr: '\\uD835\\uDCB6',\n\tAssign: '\\u2254',\n\tast: '\\u002A',\n\tasymp: '\\u2248',\n\tasympeq: '\\u224D',\n\tAtilde: '\\u00C3',\n\tatilde: '\\u00E3',\n\tAuml: '\\u00C4',\n\tauml: '\\u00E4',\n\tawconint: '\\u2233',\n\tawint: '\\u2A11',\n\tbackcong: '\\u224C',\n\tbackepsilon: '\\u03F6',\n\tbackprime: '\\u2035',\n\tbacksim: '\\u223D',\n\tbacksimeq: '\\u22CD',\n\tBackslash: '\\u2216',\n\tBarv: '\\u2AE7',\n\tbarvee: '\\u22BD',\n\tBarwed: '\\u2306',\n\tbarwed: '\\u2305',\n\tbarwedge: '\\u2305',\n\tbbrk: '\\u23B5',\n\tbbrktbrk: '\\u23B6',\n\tbcong: '\\u224C',\n\tBcy: '\\u0411',\n\tbcy: '\\u0431',\n\tbdquo: '\\u201E',\n\tbecaus: '\\u2235',\n\tBecause: '\\u2235',\n\tbecause: '\\u2235',\n\tbemptyv: '\\u29B0',\n\tbepsi: '\\u03F6',\n\tbernou: '\\u212C',\n\tBernoullis: '\\u212C',\n\tBeta: '\\u0392',\n\tbeta: '\\u03B2',\n\tbeth: '\\u2136',\n\tbetween: '\\u226C',\n\tBfr: '\\uD835\\uDD05',\n\tbfr: '\\uD835\\uDD1F',\n\tbigcap: '\\u22C2',\n\tbigcirc: '\\u25EF',\n\tbigcup: '\\u22C3',\n\tbigodot: '\\u2A00',\n\tbigoplus: '\\u2A01',\n\tbigotimes: '\\u2A02',\n\tbigsqcup: '\\u2A06',\n\tbigstar: '\\u2605',\n\tbigtriangledown: '\\u25BD',\n\tbigtriangleup: '\\u25B3',\n\tbiguplus: '\\u2A04',\n\tbigvee: '\\u22C1',\n\tbigwedge: '\\u22C0',\n\tbkarow: '\\u290D',\n\tblacklozenge: '\\u29EB',\n\tblacksquare: '\\u25AA',\n\tblacktriangle: '\\u25B4',\n\tblacktriangledown: '\\u25BE',\n\tblacktriangleleft: '\\u25C2',\n\tblacktriangleright: '\\u25B8',\n\tblank: '\\u2423',\n\tblk12: '\\u2592',\n\tblk14: '\\u2591',\n\tblk34: '\\u2593',\n\tblock: '\\u2588',\n\tbne: '\\u003D\\u20E5',\n\tbnequiv: '\\u2261\\u20E5',\n\tbNot: '\\u2AED',\n\tbnot: '\\u2310',\n\tBopf: '\\uD835\\uDD39',\n\tbopf: '\\uD835\\uDD53',\n\tbot: '\\u22A5',\n\tbottom: '\\u22A5',\n\tbowtie: '\\u22C8',\n\tboxbox: '\\u29C9',\n\tboxDL: '\\u2557',\n\tboxDl: '\\u2556',\n\tboxdL: '\\u2555',\n\tboxdl: '\\u2510',\n\tboxDR: '\\u2554',\n\tboxDr: '\\u2553',\n\tboxdR: '\\u2552',\n\tboxdr: '\\u250C',\n\tboxH: '\\u2550',\n\tboxh: '\\u2500',\n\tboxHD: '\\u2566',\n\tboxHd: '\\u2564',\n\tboxhD: '\\u2565',\n\tboxhd: '\\u252C',\n\tboxHU: '\\u2569',\n\tboxHu: '\\u2567',\n\tboxhU: '\\u2568',\n\tboxhu: '\\u2534',\n\tboxminus: '\\u229F',\n\tboxplus: '\\u229E',\n\tboxtimes: '\\u22A0',\n\tboxUL: '\\u255D',\n\tboxUl: '\\u255C',\n\tboxuL: '\\u255B',\n\tboxul: '\\u2518',\n\tboxUR: '\\u255A',\n\tboxUr: '\\u2559',\n\tboxuR: '\\u2558',\n\tboxur: '\\u2514',\n\tboxV: '\\u2551',\n\tboxv: '\\u2502',\n\tboxVH: '\\u256C',\n\tboxVh: '\\u256B',\n\tboxvH: '\\u256A',\n\tboxvh: '\\u253C',\n\tboxVL: '\\u2563',\n\tboxVl: '\\u2562',\n\tboxvL: '\\u2561',\n\tboxvl: '\\u2524',\n\tboxVR: '\\u2560',\n\tboxVr: '\\u255F',\n\tboxvR: '\\u255E',\n\tboxvr: '\\u251C',\n\tbprime: '\\u2035',\n\tBreve: '\\u02D8',\n\tbreve: '\\u02D8',\n\tbrvbar: '\\u00A6',\n\tBscr: '\\u212C',\n\tbscr: '\\uD835\\uDCB7',\n\tbsemi: '\\u204F',\n\tbsim: '\\u223D',\n\tbsime: '\\u22CD',\n\tbsol: '\\u005C',\n\tbsolb: '\\u29C5',\n\tbsolhsub: '\\u27C8',\n\tbull: '\\u2022',\n\tbullet: '\\u2022',\n\tbump: '\\u224E',\n\tbumpE: '\\u2AAE',\n\tbumpe: '\\u224F',\n\tBumpeq: '\\u224E',\n\tbumpeq: '\\u224F',\n\tCacute: '\\u0106',\n\tcacute: '\\u0107',\n\tCap: '\\u22D2',\n\tcap: '\\u2229',\n\tcapand: '\\u2A44',\n\tcapbrcup: '\\u2A49',\n\tcapcap: '\\u2A4B',\n\tcapcup: '\\u2A47',\n\tcapdot: '\\u2A40',\n\tCapitalDifferentialD: '\\u2145',\n\tcaps: '\\u2229\\uFE00',\n\tcaret: '\\u2041',\n\tcaron: '\\u02C7',\n\tCayleys: '\\u212D',\n\tccaps: '\\u2A4D',\n\tCcaron: '\\u010C',\n\tccaron: '\\u010D',\n\tCcedil: '\\u00C7',\n\tccedil: '\\u00E7',\n\tCcirc: '\\u0108',\n\tccirc: '\\u0109',\n\tCconint: '\\u2230',\n\tccups: '\\u2A4C',\n\tccupssm: '\\u2A50',\n\tCdot: '\\u010A',\n\tcdot: '\\u010B',\n\tcedil: '\\u00B8',\n\tCedilla: '\\u00B8',\n\tcemptyv: '\\u29B2',\n\tcent: '\\u00A2',\n\tCenterDot: '\\u00B7',\n\tcenterdot: '\\u00B7',\n\tCfr: '\\u212D',\n\tcfr: '\\uD835\\uDD20',\n\tCHcy: '\\u0427',\n\tchcy: '\\u0447',\n\tcheck: '\\u2713',\n\tcheckmark: '\\u2713',\n\tChi: '\\u03A7',\n\tchi: '\\u03C7',\n\tcir: '\\u25CB',\n\tcirc: '\\u02C6',\n\tcirceq: '\\u2257',\n\tcirclearrowleft: '\\u21BA',\n\tcirclearrowright: '\\u21BB',\n\tcircledast: '\\u229B',\n\tcircledcirc: '\\u229A',\n\tcircleddash: '\\u229D',\n\tCircleDot: '\\u2299',\n\tcircledR: '\\u00AE',\n\tcircledS: '\\u24C8',\n\tCircleMinus: '\\u2296',\n\tCirclePlus: '\\u2295',\n\tCircleTimes: '\\u2297',\n\tcirE: '\\u29C3',\n\tcire: '\\u2257',\n\tcirfnint: '\\u2A10',\n\tcirmid: '\\u2AEF',\n\tcirscir: '\\u29C2',\n\tClockwiseContourIntegral: '\\u2232',\n\tCloseCurlyDoubleQuote: '\\u201D',\n\tCloseCurlyQuote: '\\u2019',\n\tclubs: '\\u2663',\n\tclubsuit: '\\u2663',\n\tColon: '\\u2237',\n\tcolon: '\\u003A',\n\tColone: '\\u2A74',\n\tcolone: '\\u2254',\n\tcoloneq: '\\u2254',\n\tcomma: '\\u002C',\n\tcommat: '\\u0040',\n\tcomp: '\\u2201',\n\tcompfn: '\\u2218',\n\tcomplement: '\\u2201',\n\tcomplexes: '\\u2102',\n\tcong: '\\u2245',\n\tcongdot: '\\u2A6D',\n\tCongruent: '\\u2261',\n\tConint: '\\u222F',\n\tconint: '\\u222E',\n\tContourIntegral: '\\u222E',\n\tCopf: '\\u2102',\n\tcopf: '\\uD835\\uDD54',\n\tcoprod: '\\u2210',\n\tCoproduct: '\\u2210',\n\tCOPY: '\\u00A9',\n\tcopy: '\\u00A9',\n\tcopysr: '\\u2117',\n\tCounterClockwiseContourIntegral: '\\u2233',\n\tcrarr: '\\u21B5',\n\tCross: '\\u2A2F',\n\tcross: '\\u2717',\n\tCscr: '\\uD835\\uDC9E',\n\tcscr: '\\uD835\\uDCB8',\n\tcsub: '\\u2ACF',\n\tcsube: '\\u2AD1',\n\tcsup: '\\u2AD0',\n\tcsupe: '\\u2AD2',\n\tctdot: '\\u22EF',\n\tcudarrl: '\\u2938',\n\tcudarrr: '\\u2935',\n\tcuepr: '\\u22DE',\n\tcuesc: '\\u22DF',\n\tcularr: '\\u21B6',\n\tcularrp: '\\u293D',\n\tCup: '\\u22D3',\n\tcup: '\\u222A',\n\tcupbrcap: '\\u2A48',\n\tCupCap: '\\u224D',\n\tcupcap: '\\u2A46',\n\tcupcup: '\\u2A4A',\n\tcupdot: '\\u228D',\n\tcupor: '\\u2A45',\n\tcups: '\\u222A\\uFE00',\n\tcurarr: '\\u21B7',\n\tcurarrm: '\\u293C',\n\tcurlyeqprec: '\\u22DE',\n\tcurlyeqsucc: '\\u22DF',\n\tcurlyvee: '\\u22CE',\n\tcurlywedge: '\\u22CF',\n\tcurren: '\\u00A4',\n\tcurvearrowleft: '\\u21B6',\n\tcurvearrowright: '\\u21B7',\n\tcuvee: '\\u22CE',\n\tcuwed: '\\u22CF',\n\tcwconint: '\\u2232',\n\tcwint: '\\u2231',\n\tcylcty: '\\u232D',\n\tDagger: '\\u2021',\n\tdagger: '\\u2020',\n\tdaleth: '\\u2138',\n\tDarr: '\\u21A1',\n\tdArr: '\\u21D3',\n\tdarr: '\\u2193',\n\tdash: '\\u2010',\n\tDashv: '\\u2AE4',\n\tdashv: '\\u22A3',\n\tdbkarow: '\\u290F',\n\tdblac: '\\u02DD',\n\tDcaron: '\\u010E',\n\tdcaron: '\\u010F',\n\tDcy: '\\u0414',\n\tdcy: '\\u0434',\n\tDD: '\\u2145',\n\tdd: '\\u2146',\n\tddagger: '\\u2021',\n\tddarr: '\\u21CA',\n\tDDotrahd: '\\u2911',\n\tddotseq: '\\u2A77',\n\tdeg: '\\u00B0',\n\tDel: '\\u2207',\n\tDelta: '\\u0394',\n\tdelta: '\\u03B4',\n\tdemptyv: '\\u29B1',\n\tdfisht: '\\u297F',\n\tDfr: '\\uD835\\uDD07',\n\tdfr: '\\uD835\\uDD21',\n\tdHar: '\\u2965',\n\tdharl: '\\u21C3',\n\tdharr: '\\u21C2',\n\tDiacriticalAcute: '\\u00B4',\n\tDiacriticalDot: '\\u02D9',\n\tDiacriticalDoubleAcute: '\\u02DD',\n\tDiacriticalGrave: '\\u0060',\n\tDiacriticalTilde: '\\u02DC',\n\tdiam: '\\u22C4',\n\tDiamond: '\\u22C4',\n\tdiamond: '\\u22C4',\n\tdiamondsuit: '\\u2666',\n\tdiams: '\\u2666',\n\tdie: '\\u00A8',\n\tDifferentialD: '\\u2146',\n\tdigamma: '\\u03DD',\n\tdisin: '\\u22F2',\n\tdiv: '\\u00F7',\n\tdivide: '\\u00F7',\n\tdivideontimes: '\\u22C7',\n\tdivonx: '\\u22C7',\n\tDJcy: '\\u0402',\n\tdjcy: '\\u0452',\n\tdlcorn: '\\u231E',\n\tdlcrop: '\\u230D',\n\tdollar: '\\u0024',\n\tDopf: '\\uD835\\uDD3B',\n\tdopf: '\\uD835\\uDD55',\n\tDot: '\\u00A8',\n\tdot: '\\u02D9',\n\tDotDot: '\\u20DC',\n\tdoteq: '\\u2250',\n\tdoteqdot: '\\u2251',\n\tDotEqual: '\\u2250',\n\tdotminus: '\\u2238',\n\tdotplus: '\\u2214',\n\tdotsquare: '\\u22A1',\n\tdoublebarwedge: '\\u2306',\n\tDoubleContourIntegral: '\\u222F',\n\tDoubleDot: '\\u00A8',\n\tDoubleDownArrow: '\\u21D3',\n\tDoubleLeftArrow: '\\u21D0',\n\tDoubleLeftRightArrow: '\\u21D4',\n\tDoubleLeftTee: '\\u2AE4',\n\tDoubleLongLeftArrow: '\\u27F8',\n\tDoubleLongLeftRightArrow: '\\u27FA',\n\tDoubleLongRightArrow: '\\u27F9',\n\tDoubleRightArrow: '\\u21D2',\n\tDoubleRightTee: '\\u22A8',\n\tDoubleUpArrow: '\\u21D1',\n\tDoubleUpDownArrow: '\\u21D5',\n\tDoubleVerticalBar: '\\u2225',\n\tDownArrow: '\\u2193',\n\tDownarrow: '\\u21D3',\n\tdownarrow: '\\u2193',\n\tDownArrowBar: '\\u2913',\n\tDownArrowUpArrow: '\\u21F5',\n\tDownBreve: '\\u0311',\n\tdowndownarrows: '\\u21CA',\n\tdownharpoonleft: '\\u21C3',\n\tdownharpoonright: '\\u21C2',\n\tDownLeftRightVector: '\\u2950',\n\tDownLeftTeeVector: '\\u295E',\n\tDownLeftVector: '\\u21BD',\n\tDownLeftVectorBar: '\\u2956',\n\tDownRightTeeVector: '\\u295F',\n\tDownRightVector: '\\u21C1',\n\tDownRightVectorBar: '\\u2957',\n\tDownTee: '\\u22A4',\n\tDownTeeArrow: '\\u21A7',\n\tdrbkarow: '\\u2910',\n\tdrcorn: '\\u231F',\n\tdrcrop: '\\u230C',\n\tDscr: '\\uD835\\uDC9F',\n\tdscr: '\\uD835\\uDCB9',\n\tDScy: '\\u0405',\n\tdscy: '\\u0455',\n\tdsol: '\\u29F6',\n\tDstrok: '\\u0110',\n\tdstrok: '\\u0111',\n\tdtdot: '\\u22F1',\n\tdtri: '\\u25BF',\n\tdtrif: '\\u25BE',\n\tduarr: '\\u21F5',\n\tduhar: '\\u296F',\n\tdwangle: '\\u29A6',\n\tDZcy: '\\u040F',\n\tdzcy: '\\u045F',\n\tdzigrarr: '\\u27FF',\n\tEacute: '\\u00C9',\n\teacute: '\\u00E9',\n\teaster: '\\u2A6E',\n\tEcaron: '\\u011A',\n\tecaron: '\\u011B',\n\tecir: '\\u2256',\n\tEcirc: '\\u00CA',\n\tecirc: '\\u00EA',\n\tecolon: '\\u2255',\n\tEcy: '\\u042D',\n\tecy: '\\u044D',\n\teDDot: '\\u2A77',\n\tEdot: '\\u0116',\n\teDot: '\\u2251',\n\tedot: '\\u0117',\n\tee: '\\u2147',\n\tefDot: '\\u2252',\n\tEfr: '\\uD835\\uDD08',\n\tefr: '\\uD835\\uDD22',\n\teg: '\\u2A9A',\n\tEgrave: '\\u00C8',\n\tegrave: '\\u00E8',\n\tegs: '\\u2A96',\n\tegsdot: '\\u2A98',\n\tel: '\\u2A99',\n\tElement: '\\u2208',\n\telinters: '\\u23E7',\n\tell: '\\u2113',\n\tels: '\\u2A95',\n\telsdot: '\\u2A97',\n\tEmacr: '\\u0112',\n\temacr: '\\u0113',\n\tempty: '\\u2205',\n\temptyset: '\\u2205',\n\tEmptySmallSquare: '\\u25FB',\n\temptyv: '\\u2205',\n\tEmptyVerySmallSquare: '\\u25AB',\n\temsp: '\\u2003',\n\temsp13: '\\u2004',\n\temsp14: '\\u2005',\n\tENG: '\\u014A',\n\teng: '\\u014B',\n\tensp: '\\u2002',\n\tEogon: '\\u0118',\n\teogon: '\\u0119',\n\tEopf: '\\uD835\\uDD3C',\n\teopf: '\\uD835\\uDD56',\n\tepar: '\\u22D5',\n\teparsl: '\\u29E3',\n\teplus: '\\u2A71',\n\tepsi: '\\u03B5',\n\tEpsilon: '\\u0395',\n\tepsilon: '\\u03B5',\n\tepsiv: '\\u03F5',\n\teqcirc: '\\u2256',\n\teqcolon: '\\u2255',\n\teqsim: '\\u2242',\n\teqslantgtr: '\\u2A96',\n\teqslantless: '\\u2A95',\n\tEqual: '\\u2A75',\n\tequals: '\\u003D',\n\tEqualTilde: '\\u2242',\n\tequest: '\\u225F',\n\tEquilibrium: '\\u21CC',\n\tequiv: '\\u2261',\n\tequivDD: '\\u2A78',\n\teqvparsl: '\\u29E5',\n\terarr: '\\u2971',\n\terDot: '\\u2253',\n\tEscr: '\\u2130',\n\tescr: '\\u212F',\n\tesdot: '\\u2250',\n\tEsim: '\\u2A73',\n\tesim: '\\u2242',\n\tEta: '\\u0397',\n\teta: '\\u03B7',\n\tETH: '\\u00D0',\n\teth: '\\u00F0',\n\tEuml: '\\u00CB',\n\teuml: '\\u00EB',\n\teuro: '\\u20AC',\n\texcl: '\\u0021',\n\texist: '\\u2203',\n\tExists: '\\u2203',\n\texpectation: '\\u2130',\n\tExponentialE: '\\u2147',\n\texponentiale: '\\u2147',\n\tfallingdotseq: '\\u2252',\n\tFcy: '\\u0424',\n\tfcy: '\\u0444',\n\tfemale: '\\u2640',\n\tffilig: '\\uFB03',\n\tfflig: '\\uFB00',\n\tffllig: '\\uFB04',\n\tFfr: '\\uD835\\uDD09',\n\tffr: '\\uD835\\uDD23',\n\tfilig: '\\uFB01',\n\tFilledSmallSquare: '\\u25FC',\n\tFilledVerySmallSquare: '\\u25AA',\n\tfjlig: '\\u0066\\u006A',\n\tflat: '\\u266D',\n\tfllig: '\\uFB02',\n\tfltns: '\\u25B1',\n\tfnof: '\\u0192',\n\tFopf: '\\uD835\\uDD3D',\n\tfopf: '\\uD835\\uDD57',\n\tForAll: '\\u2200',\n\tforall: '\\u2200',\n\tfork: '\\u22D4',\n\tforkv: '\\u2AD9',\n\tFouriertrf: '\\u2131',\n\tfpartint: '\\u2A0D',\n\tfrac12: '\\u00BD',\n\tfrac13: '\\u2153',\n\tfrac14: '\\u00BC',\n\tfrac15: '\\u2155',\n\tfrac16: '\\u2159',\n\tfrac18: '\\u215B',\n\tfrac23: '\\u2154',\n\tfrac25: '\\u2156',\n\tfrac34: '\\u00BE',\n\tfrac35: '\\u2157',\n\tfrac38: '\\u215C',\n\tfrac45: '\\u2158',\n\tfrac56: '\\u215A',\n\tfrac58: '\\u215D',\n\tfrac78: '\\u215E',\n\tfrasl: '\\u2044',\n\tfrown: '\\u2322',\n\tFscr: '\\u2131',\n\tfscr: '\\uD835\\uDCBB',\n\tgacute: '\\u01F5',\n\tGamma: '\\u0393',\n\tgamma: '\\u03B3',\n\tGammad: '\\u03DC',\n\tgammad: '\\u03DD',\n\tgap: '\\u2A86',\n\tGbreve: '\\u011E',\n\tgbreve: '\\u011F',\n\tGcedil: '\\u0122',\n\tGcirc: '\\u011C',\n\tgcirc: '\\u011D',\n\tGcy: '\\u0413',\n\tgcy: '\\u0433',\n\tGdot: '\\u0120',\n\tgdot: '\\u0121',\n\tgE: '\\u2267',\n\tge: '\\u2265',\n\tgEl: '\\u2A8C',\n\tgel: '\\u22DB',\n\tgeq: '\\u2265',\n\tgeqq: '\\u2267',\n\tgeqslant: '\\u2A7E',\n\tges: '\\u2A7E',\n\tgescc: '\\u2AA9',\n\tgesdot: '\\u2A80',\n\tgesdoto: '\\u2A82',\n\tgesdotol: '\\u2A84',\n\tgesl: '\\u22DB\\uFE00',\n\tgesles: '\\u2A94',\n\tGfr: '\\uD835\\uDD0A',\n\tgfr: '\\uD835\\uDD24',\n\tGg: '\\u22D9',\n\tgg: '\\u226B',\n\tggg: '\\u22D9',\n\tgimel: '\\u2137',\n\tGJcy: '\\u0403',\n\tgjcy: '\\u0453',\n\tgl: '\\u2277',\n\tgla: '\\u2AA5',\n\tglE: '\\u2A92',\n\tglj: '\\u2AA4',\n\tgnap: '\\u2A8A',\n\tgnapprox: '\\u2A8A',\n\tgnE: '\\u2269',\n\tgne: '\\u2A88',\n\tgneq: '\\u2A88',\n\tgneqq: '\\u2269',\n\tgnsim: '\\u22E7',\n\tGopf: '\\uD835\\uDD3E',\n\tgopf: '\\uD835\\uDD58',\n\tgrave: '\\u0060',\n\tGreaterEqual: '\\u2265',\n\tGreaterEqualLess: '\\u22DB',\n\tGreaterFullEqual: '\\u2267',\n\tGreaterGreater: '\\u2AA2',\n\tGreaterLess: '\\u2277',\n\tGreaterSlantEqual: '\\u2A7E',\n\tGreaterTilde: '\\u2273',\n\tGscr: '\\uD835\\uDCA2',\n\tgscr: '\\u210A',\n\tgsim: '\\u2273',\n\tgsime: '\\u2A8E',\n\tgsiml: '\\u2A90',\n\tGt: '\\u226B',\n\tGT: '\\u003E',\n\tgt: '\\u003E',\n\tgtcc: '\\u2AA7',\n\tgtcir: '\\u2A7A',\n\tgtdot: '\\u22D7',\n\tgtlPar: '\\u2995',\n\tgtquest: '\\u2A7C',\n\tgtrapprox: '\\u2A86',\n\tgtrarr: '\\u2978',\n\tgtrdot: '\\u22D7',\n\tgtreqless: '\\u22DB',\n\tgtreqqless: '\\u2A8C',\n\tgtrless: '\\u2277',\n\tgtrsim: '\\u2273',\n\tgvertneqq: '\\u2269\\uFE00',\n\tgvnE: '\\u2269\\uFE00',\n\tHacek: '\\u02C7',\n\thairsp: '\\u200A',\n\thalf: '\\u00BD',\n\thamilt: '\\u210B',\n\tHARDcy: '\\u042A',\n\thardcy: '\\u044A',\n\thArr: '\\u21D4',\n\tharr: '\\u2194',\n\tharrcir: '\\u2948',\n\tharrw: '\\u21AD',\n\tHat: '\\u005E',\n\thbar: '\\u210F',\n\tHcirc: '\\u0124',\n\thcirc: '\\u0125',\n\thearts: '\\u2665',\n\theartsuit: '\\u2665',\n\thellip: '\\u2026',\n\thercon: '\\u22B9',\n\tHfr: '\\u210C',\n\thfr: '\\uD835\\uDD25',\n\tHilbertSpace: '\\u210B',\n\thksearow: '\\u2925',\n\thkswarow: '\\u2926',\n\thoarr: '\\u21FF',\n\thomtht: '\\u223B',\n\thookleftarrow: '\\u21A9',\n\thookrightarrow: '\\u21AA',\n\tHopf: '\\u210D',\n\thopf: '\\uD835\\uDD59',\n\thorbar: '\\u2015',\n\tHorizontalLine: '\\u2500',\n\tHscr: '\\u210B',\n\thscr: '\\uD835\\uDCBD',\n\thslash: '\\u210F',\n\tHstrok: '\\u0126',\n\thstrok: '\\u0127',\n\tHumpDownHump: '\\u224E',\n\tHumpEqual: '\\u224F',\n\thybull: '\\u2043',\n\thyphen: '\\u2010',\n\tIacute: '\\u00CD',\n\tiacute: '\\u00ED',\n\tic: '\\u2063',\n\tIcirc: '\\u00CE',\n\ticirc: '\\u00EE',\n\tIcy: '\\u0418',\n\ticy: '\\u0438',\n\tIdot: '\\u0130',\n\tIEcy: '\\u0415',\n\tiecy: '\\u0435',\n\tiexcl: '\\u00A1',\n\tiff: '\\u21D4',\n\tIfr: '\\u2111',\n\tifr: '\\uD835\\uDD26',\n\tIgrave: '\\u00CC',\n\tigrave: '\\u00EC',\n\tii: '\\u2148',\n\tiiiint: '\\u2A0C',\n\tiiint: '\\u222D',\n\tiinfin: '\\u29DC',\n\tiiota: '\\u2129',\n\tIJlig: '\\u0132',\n\tijlig: '\\u0133',\n\tIm: '\\u2111',\n\tImacr: '\\u012A',\n\timacr: '\\u012B',\n\timage: '\\u2111',\n\tImaginaryI: '\\u2148',\n\timagline: '\\u2110',\n\timagpart: '\\u2111',\n\timath: '\\u0131',\n\timof: '\\u22B7',\n\timped: '\\u01B5',\n\tImplies: '\\u21D2',\n\tin: '\\u2208',\n\tincare: '\\u2105',\n\tinfin: '\\u221E',\n\tinfintie: '\\u29DD',\n\tinodot: '\\u0131',\n\tInt: '\\u222C',\n\tint: '\\u222B',\n\tintcal: '\\u22BA',\n\tintegers: '\\u2124',\n\tIntegral: '\\u222B',\n\tintercal: '\\u22BA',\n\tIntersection: '\\u22C2',\n\tintlarhk: '\\u2A17',\n\tintprod: '\\u2A3C',\n\tInvisibleComma: '\\u2063',\n\tInvisibleTimes: '\\u2062',\n\tIOcy: '\\u0401',\n\tiocy: '\\u0451',\n\tIogon: '\\u012E',\n\tiogon: '\\u012F',\n\tIopf: '\\uD835\\uDD40',\n\tiopf: '\\uD835\\uDD5A',\n\tIota: '\\u0399',\n\tiota: '\\u03B9',\n\tiprod: '\\u2A3C',\n\tiquest: '\\u00BF',\n\tIscr: '\\u2110',\n\tiscr: '\\uD835\\uDCBE',\n\tisin: '\\u2208',\n\tisindot: '\\u22F5',\n\tisinE: '\\u22F9',\n\tisins: '\\u22F4',\n\tisinsv: '\\u22F3',\n\tisinv: '\\u2208',\n\tit: '\\u2062',\n\tItilde: '\\u0128',\n\titilde: '\\u0129',\n\tIukcy: '\\u0406',\n\tiukcy: '\\u0456',\n\tIuml: '\\u00CF',\n\tiuml: '\\u00EF',\n\tJcirc: '\\u0134',\n\tjcirc: '\\u0135',\n\tJcy: '\\u0419',\n\tjcy: '\\u0439',\n\tJfr: '\\uD835\\uDD0D',\n\tjfr: '\\uD835\\uDD27',\n\tjmath: '\\u0237',\n\tJopf: '\\uD835\\uDD41',\n\tjopf: '\\uD835\\uDD5B',\n\tJscr: '\\uD835\\uDCA5',\n\tjscr: '\\uD835\\uDCBF',\n\tJsercy: '\\u0408',\n\tjsercy: '\\u0458',\n\tJukcy: '\\u0404',\n\tjukcy: '\\u0454',\n\tKappa: '\\u039A',\n\tkappa: '\\u03BA',\n\tkappav: '\\u03F0',\n\tKcedil: '\\u0136',\n\tkcedil: '\\u0137',\n\tKcy: '\\u041A',\n\tkcy: '\\u043A',\n\tKfr: '\\uD835\\uDD0E',\n\tkfr: '\\uD835\\uDD28',\n\tkgreen: '\\u0138',\n\tKHcy: '\\u0425',\n\tkhcy: '\\u0445',\n\tKJcy: '\\u040C',\n\tkjcy: '\\u045C',\n\tKopf: '\\uD835\\uDD42',\n\tkopf: '\\uD835\\uDD5C',\n\tKscr: '\\uD835\\uDCA6',\n\tkscr: '\\uD835\\uDCC0',\n\tlAarr: '\\u21DA',\n\tLacute: '\\u0139',\n\tlacute: '\\u013A',\n\tlaemptyv: '\\u29B4',\n\tlagran: '\\u2112',\n\tLambda: '\\u039B',\n\tlambda: '\\u03BB',\n\tLang: '\\u27EA',\n\tlang: '\\u27E8',\n\tlangd: '\\u2991',\n\tlangle: '\\u27E8',\n\tlap: '\\u2A85',\n\tLaplacetrf: '\\u2112',\n\tlaquo: '\\u00AB',\n\tLarr: '\\u219E',\n\tlArr: '\\u21D0',\n\tlarr: '\\u2190',\n\tlarrb: '\\u21E4',\n\tlarrbfs: '\\u291F',\n\tlarrfs: '\\u291D',\n\tlarrhk: '\\u21A9',\n\tlarrlp: '\\u21AB',\n\tlarrpl: '\\u2939',\n\tlarrsim: '\\u2973',\n\tlarrtl: '\\u21A2',\n\tlat: '\\u2AAB',\n\tlAtail: '\\u291B',\n\tlatail: '\\u2919',\n\tlate: '\\u2AAD',\n\tlates: '\\u2AAD\\uFE00',\n\tlBarr: '\\u290E',\n\tlbarr: '\\u290C',\n\tlbbrk: '\\u2772',\n\tlbrace: '\\u007B',\n\tlbrack: '\\u005B',\n\tlbrke: '\\u298B',\n\tlbrksld: '\\u298F',\n\tlbrkslu: '\\u298D',\n\tLcaron: '\\u013D',\n\tlcaron: '\\u013E',\n\tLcedil: '\\u013B',\n\tlcedil: '\\u013C',\n\tlceil: '\\u2308',\n\tlcub: '\\u007B',\n\tLcy: '\\u041B',\n\tlcy: '\\u043B',\n\tldca: '\\u2936',\n\tldquo: '\\u201C',\n\tldquor: '\\u201E',\n\tldrdhar: '\\u2967',\n\tldrushar: '\\u294B',\n\tldsh: '\\u21B2',\n\tlE: '\\u2266',\n\tle: '\\u2264',\n\tLeftAngleBracket: '\\u27E8',\n\tLeftArrow: '\\u2190',\n\tLeftarrow: '\\u21D0',\n\tleftarrow: '\\u2190',\n\tLeftArrowBar: '\\u21E4',\n\tLeftArrowRightArrow: '\\u21C6',\n\tleftarrowtail: '\\u21A2',\n\tLeftCeiling: '\\u2308',\n\tLeftDoubleBracket: '\\u27E6',\n\tLeftDownTeeVector: '\\u2961',\n\tLeftDownVector: '\\u21C3',\n\tLeftDownVectorBar: '\\u2959',\n\tLeftFloor: '\\u230A',\n\tleftharpoondown: '\\u21BD',\n\tleftharpoonup: '\\u21BC',\n\tleftleftarrows: '\\u21C7',\n\tLeftRightArrow: '\\u2194',\n\tLeftrightarrow: '\\u21D4',\n\tleftrightarrow: '\\u2194',\n\tleftrightarrows: '\\u21C6',\n\tleftrightharpoons: '\\u21CB',\n\tleftrightsquigarrow: '\\u21AD',\n\tLeftRightVector: '\\u294E',\n\tLeftTee: '\\u22A3',\n\tLeftTeeArrow: '\\u21A4',\n\tLeftTeeVector: '\\u295A',\n\tleftthreetimes: '\\u22CB',\n\tLeftTriangle: '\\u22B2',\n\tLeftTriangleBar: '\\u29CF',\n\tLeftTriangleEqual: '\\u22B4',\n\tLeftUpDownVector: '\\u2951',\n\tLeftUpTeeVector: '\\u2960',\n\tLeftUpVector: '\\u21BF',\n\tLeftUpVectorBar: '\\u2958',\n\tLeftVector: '\\u21BC',\n\tLeftVectorBar: '\\u2952',\n\tlEg: '\\u2A8B',\n\tleg: '\\u22DA',\n\tleq: '\\u2264',\n\tleqq: '\\u2266',\n\tleqslant: '\\u2A7D',\n\tles: '\\u2A7D',\n\tlescc: '\\u2AA8',\n\tlesdot: '\\u2A7F',\n\tlesdoto: '\\u2A81',\n\tlesdotor: '\\u2A83',\n\tlesg: '\\u22DA\\uFE00',\n\tlesges: '\\u2A93',\n\tlessapprox: '\\u2A85',\n\tlessdot: '\\u22D6',\n\tlesseqgtr: '\\u22DA',\n\tlesseqqgtr: '\\u2A8B',\n\tLessEqualGreater: '\\u22DA',\n\tLessFullEqual: '\\u2266',\n\tLessGreater: '\\u2276',\n\tlessgtr: '\\u2276',\n\tLessLess: '\\u2AA1',\n\tlesssim: '\\u2272',\n\tLessSlantEqual: '\\u2A7D',\n\tLessTilde: '\\u2272',\n\tlfisht: '\\u297C',\n\tlfloor: '\\u230A',\n\tLfr: '\\uD835\\uDD0F',\n\tlfr: '\\uD835\\uDD29',\n\tlg: '\\u2276',\n\tlgE: '\\u2A91',\n\tlHar: '\\u2962',\n\tlhard: '\\u21BD',\n\tlharu: '\\u21BC',\n\tlharul: '\\u296A',\n\tlhblk: '\\u2584',\n\tLJcy: '\\u0409',\n\tljcy: '\\u0459',\n\tLl: '\\u22D8',\n\tll: '\\u226A',\n\tllarr: '\\u21C7',\n\tllcorner: '\\u231E',\n\tLleftarrow: '\\u21DA',\n\tllhard: '\\u296B',\n\tlltri: '\\u25FA',\n\tLmidot: '\\u013F',\n\tlmidot: '\\u0140',\n\tlmoust: '\\u23B0',\n\tlmoustache: '\\u23B0',\n\tlnap: '\\u2A89',\n\tlnapprox: '\\u2A89',\n\tlnE: '\\u2268',\n\tlne: '\\u2A87',\n\tlneq: '\\u2A87',\n\tlneqq: '\\u2268',\n\tlnsim: '\\u22E6',\n\tloang: '\\u27EC',\n\tloarr: '\\u21FD',\n\tlobrk: '\\u27E6',\n\tLongLeftArrow: '\\u27F5',\n\tLongleftarrow: '\\u27F8',\n\tlongleftarrow: '\\u27F5',\n\tLongLeftRightArrow: '\\u27F7',\n\tLongleftrightarrow: '\\u27FA',\n\tlongleftrightarrow: '\\u27F7',\n\tlongmapsto: '\\u27FC',\n\tLongRightArrow: '\\u27F6',\n\tLongrightarrow: '\\u27F9',\n\tlongrightarrow: '\\u27F6',\n\tlooparrowleft: '\\u21AB',\n\tlooparrowright: '\\u21AC',\n\tlopar: '\\u2985',\n\tLopf: '\\uD835\\uDD43',\n\tlopf: '\\uD835\\uDD5D',\n\tloplus: '\\u2A2D',\n\tlotimes: '\\u2A34',\n\tlowast: '\\u2217',\n\tlowbar: '\\u005F',\n\tLowerLeftArrow: '\\u2199',\n\tLowerRightArrow: '\\u2198',\n\tloz: '\\u25CA',\n\tlozenge: '\\u25CA',\n\tlozf: '\\u29EB',\n\tlpar: '\\u0028',\n\tlparlt: '\\u2993',\n\tlrarr: '\\u21C6',\n\tlrcorner: '\\u231F',\n\tlrhar: '\\u21CB',\n\tlrhard: '\\u296D',\n\tlrm: '\\u200E',\n\tlrtri: '\\u22BF',\n\tlsaquo: '\\u2039',\n\tLscr: '\\u2112',\n\tlscr: '\\uD835\\uDCC1',\n\tLsh: '\\u21B0',\n\tlsh: '\\u21B0',\n\tlsim: '\\u2272',\n\tlsime: '\\u2A8D',\n\tlsimg: '\\u2A8F',\n\tlsqb: '\\u005B',\n\tlsquo: '\\u2018',\n\tlsquor: '\\u201A',\n\tLstrok: '\\u0141',\n\tlstrok: '\\u0142',\n\tLt: '\\u226A',\n\tLT: '\\u003C',\n\tlt: '\\u003C',\n\tltcc: '\\u2AA6',\n\tltcir: '\\u2A79',\n\tltdot: '\\u22D6',\n\tlthree: '\\u22CB',\n\tltimes: '\\u22C9',\n\tltlarr: '\\u2976',\n\tltquest: '\\u2A7B',\n\tltri: '\\u25C3',\n\tltrie: '\\u22B4',\n\tltrif: '\\u25C2',\n\tltrPar: '\\u2996',\n\tlurdshar: '\\u294A',\n\tluruhar: '\\u2966',\n\tlvertneqq: '\\u2268\\uFE00',\n\tlvnE: '\\u2268\\uFE00',\n\tmacr: '\\u00AF',\n\tmale: '\\u2642',\n\tmalt: '\\u2720',\n\tmaltese: '\\u2720',\n\tMap: '\\u2905',\n\tmap: '\\u21A6',\n\tmapsto: '\\u21A6',\n\tmapstodown: '\\u21A7',\n\tmapstoleft: '\\u21A4',\n\tmapstoup: '\\u21A5',\n\tmarker: '\\u25AE',\n\tmcomma: '\\u2A29',\n\tMcy: '\\u041C',\n\tmcy: '\\u043C',\n\tmdash: '\\u2014',\n\tmDDot: '\\u223A',\n\tmeasuredangle: '\\u2221',\n\tMediumSpace: '\\u205F',\n\tMellintrf: '\\u2133',\n\tMfr: '\\uD835\\uDD10',\n\tmfr: '\\uD835\\uDD2A',\n\tmho: '\\u2127',\n\tmicro: '\\u00B5',\n\tmid: '\\u2223',\n\tmidast: '\\u002A',\n\tmidcir: '\\u2AF0',\n\tmiddot: '\\u00B7',\n\tminus: '\\u2212',\n\tminusb: '\\u229F',\n\tminusd: '\\u2238',\n\tminusdu: '\\u2A2A',\n\tMinusPlus: '\\u2213',\n\tmlcp: '\\u2ADB',\n\tmldr: '\\u2026',\n\tmnplus: '\\u2213',\n\tmodels: '\\u22A7',\n\tMopf: '\\uD835\\uDD44',\n\tmopf: '\\uD835\\uDD5E',\n\tmp: '\\u2213',\n\tMscr: '\\u2133',\n\tmscr: '\\uD835\\uDCC2',\n\tmstpos: '\\u223E',\n\tMu: '\\u039C',\n\tmu: '\\u03BC',\n\tmultimap: '\\u22B8',\n\tmumap: '\\u22B8',\n\tnabla: '\\u2207',\n\tNacute: '\\u0143',\n\tnacute: '\\u0144',\n\tnang: '\\u2220\\u20D2',\n\tnap: '\\u2249',\n\tnapE: '\\u2A70\\u0338',\n\tnapid: '\\u224B\\u0338',\n\tnapos: '\\u0149',\n\tnapprox: '\\u2249',\n\tnatur: '\\u266E',\n\tnatural: '\\u266E',\n\tnaturals: '\\u2115',\n\tnbsp: '\\u00A0',\n\tnbump: '\\u224E\\u0338',\n\tnbumpe: '\\u224F\\u0338',\n\tncap: '\\u2A43',\n\tNcaron: '\\u0147',\n\tncaron: '\\u0148',\n\tNcedil: '\\u0145',\n\tncedil: '\\u0146',\n\tncong: '\\u2247',\n\tncongdot: '\\u2A6D\\u0338',\n\tncup: '\\u2A42',\n\tNcy: '\\u041D',\n\tncy: '\\u043D',\n\tndash: '\\u2013',\n\tne: '\\u2260',\n\tnearhk: '\\u2924',\n\tneArr: '\\u21D7',\n\tnearr: '\\u2197',\n\tnearrow: '\\u2197',\n\tnedot: '\\u2250\\u0338',\n\tNegativeMediumSpace: '\\u200B',\n\tNegativeThickSpace: '\\u200B',\n\tNegativeThinSpace: '\\u200B',\n\tNegativeVeryThinSpace: '\\u200B',\n\tnequiv: '\\u2262',\n\tnesear: '\\u2928',\n\tnesim: '\\u2242\\u0338',\n\tNestedGreaterGreater: '\\u226B',\n\tNestedLessLess: '\\u226A',\n\tNewLine: '\\u000A',\n\tnexist: '\\u2204',\n\tnexists: '\\u2204',\n\tNfr: '\\uD835\\uDD11',\n\tnfr: '\\uD835\\uDD2B',\n\tngE: '\\u2267\\u0338',\n\tnge: '\\u2271',\n\tngeq: '\\u2271',\n\tngeqq: '\\u2267\\u0338',\n\tngeqslant: '\\u2A7E\\u0338',\n\tnges: '\\u2A7E\\u0338',\n\tnGg: '\\u22D9\\u0338',\n\tngsim: '\\u2275',\n\tnGt: '\\u226B\\u20D2',\n\tngt: '\\u226F',\n\tngtr: '\\u226F',\n\tnGtv: '\\u226B\\u0338',\n\tnhArr: '\\u21CE',\n\tnharr: '\\u21AE',\n\tnhpar: '\\u2AF2',\n\tni: '\\u220B',\n\tnis: '\\u22FC',\n\tnisd: '\\u22FA',\n\tniv: '\\u220B',\n\tNJcy: '\\u040A',\n\tnjcy: '\\u045A',\n\tnlArr: '\\u21CD',\n\tnlarr: '\\u219A',\n\tnldr: '\\u2025',\n\tnlE: '\\u2266\\u0338',\n\tnle: '\\u2270',\n\tnLeftarrow: '\\u21CD',\n\tnleftarrow: '\\u219A',\n\tnLeftrightarrow: '\\u21CE',\n\tnleftrightarrow: '\\u21AE',\n\tnleq: '\\u2270',\n\tnleqq: '\\u2266\\u0338',\n\tnleqslant: '\\u2A7D\\u0338',\n\tnles: '\\u2A7D\\u0338',\n\tnless: '\\u226E',\n\tnLl: '\\u22D8\\u0338',\n\tnlsim: '\\u2274',\n\tnLt: '\\u226A\\u20D2',\n\tnlt: '\\u226E',\n\tnltri: '\\u22EA',\n\tnltrie: '\\u22EC',\n\tnLtv: '\\u226A\\u0338',\n\tnmid: '\\u2224',\n\tNoBreak: '\\u2060',\n\tNonBreakingSpace: '\\u00A0',\n\tNopf: '\\u2115',\n\tnopf: '\\uD835\\uDD5F',\n\tNot: '\\u2AEC',\n\tnot: '\\u00AC',\n\tNotCongruent: '\\u2262',\n\tNotCupCap: '\\u226D',\n\tNotDoubleVerticalBar: '\\u2226',\n\tNotElement: '\\u2209',\n\tNotEqual: '\\u2260',\n\tNotEqualTilde: '\\u2242\\u0338',\n\tNotExists: '\\u2204',\n\tNotGreater: '\\u226F',\n\tNotGreaterEqual: '\\u2271',\n\tNotGreaterFullEqual: '\\u2267\\u0338',\n\tNotGreaterGreater: '\\u226B\\u0338',\n\tNotGreaterLess: '\\u2279',\n\tNotGreaterSlantEqual: '\\u2A7E\\u0338',\n\tNotGreaterTilde: '\\u2275',\n\tNotHumpDownHump: '\\u224E\\u0338',\n\tNotHumpEqual: '\\u224F\\u0338',\n\tnotin: '\\u2209',\n\tnotindot: '\\u22F5\\u0338',\n\tnotinE: '\\u22F9\\u0338',\n\tnotinva: '\\u2209',\n\tnotinvb: '\\u22F7',\n\tnotinvc: '\\u22F6',\n\tNotLeftTriangle: '\\u22EA',\n\tNotLeftTriangleBar: '\\u29CF\\u0338',\n\tNotLeftTriangleEqual: '\\u22EC',\n\tNotLess: '\\u226E',\n\tNotLessEqual: '\\u2270',\n\tNotLessGreater: '\\u2278',\n\tNotLessLess: '\\u226A\\u0338',\n\tNotLessSlantEqual: '\\u2A7D\\u0338',\n\tNotLessTilde: '\\u2274',\n\tNotNestedGreaterGreater: '\\u2AA2\\u0338',\n\tNotNestedLessLess: '\\u2AA1\\u0338',\n\tnotni: '\\u220C',\n\tnotniva: '\\u220C',\n\tnotnivb: '\\u22FE',\n\tnotnivc: '\\u22FD',\n\tNotPrecedes: '\\u2280',\n\tNotPrecedesEqual: '\\u2AAF\\u0338',\n\tNotPrecedesSlantEqual: '\\u22E0',\n\tNotReverseElement: '\\u220C',\n\tNotRightTriangle: '\\u22EB',\n\tNotRightTriangleBar: '\\u29D0\\u0338',\n\tNotRightTriangleEqual: '\\u22ED',\n\tNotSquareSubset: '\\u228F\\u0338',\n\tNotSquareSubsetEqual: '\\u22E2',\n\tNotSquareSuperset: '\\u2290\\u0338',\n\tNotSquareSupersetEqual: '\\u22E3',\n\tNotSubset: '\\u2282\\u20D2',\n\tNotSubsetEqual: '\\u2288',\n\tNotSucceeds: '\\u2281',\n\tNotSucceedsEqual: '\\u2AB0\\u0338',\n\tNotSucceedsSlantEqual: '\\u22E1',\n\tNotSucceedsTilde: '\\u227F\\u0338',\n\tNotSuperset: '\\u2283\\u20D2',\n\tNotSupersetEqual: '\\u2289',\n\tNotTilde: '\\u2241',\n\tNotTildeEqual: '\\u2244',\n\tNotTildeFullEqual: '\\u2247',\n\tNotTildeTilde: '\\u2249',\n\tNotVerticalBar: '\\u2224',\n\tnpar: '\\u2226',\n\tnparallel: '\\u2226',\n\tnparsl: '\\u2AFD\\u20E5',\n\tnpart: '\\u2202\\u0338',\n\tnpolint: '\\u2A14',\n\tnpr: '\\u2280',\n\tnprcue: '\\u22E0',\n\tnpre: '\\u2AAF\\u0338',\n\tnprec: '\\u2280',\n\tnpreceq: '\\u2AAF\\u0338',\n\tnrArr: '\\u21CF',\n\tnrarr: '\\u219B',\n\tnrarrc: '\\u2933\\u0338',\n\tnrarrw: '\\u219D\\u0338',\n\tnRightarrow: '\\u21CF',\n\tnrightarrow: '\\u219B',\n\tnrtri: '\\u22EB',\n\tnrtrie: '\\u22ED',\n\tnsc: '\\u2281',\n\tnsccue: '\\u22E1',\n\tnsce: '\\u2AB0\\u0338',\n\tNscr: '\\uD835\\uDCA9',\n\tnscr: '\\uD835\\uDCC3',\n\tnshortmid: '\\u2224',\n\tnshortparallel: '\\u2226',\n\tnsim: '\\u2241',\n\tnsime: '\\u2244',\n\tnsimeq: '\\u2244',\n\tnsmid: '\\u2224',\n\tnspar: '\\u2226',\n\tnsqsube: '\\u22E2',\n\tnsqsupe: '\\u22E3',\n\tnsub: '\\u2284',\n\tnsubE: '\\u2AC5\\u0338',\n\tnsube: '\\u2288',\n\tnsubset: '\\u2282\\u20D2',\n\tnsubseteq: '\\u2288',\n\tnsubseteqq: '\\u2AC5\\u0338',\n\tnsucc: '\\u2281',\n\tnsucceq: '\\u2AB0\\u0338',\n\tnsup: '\\u2285',\n\tnsupE: '\\u2AC6\\u0338',\n\tnsupe: '\\u2289',\n\tnsupset: '\\u2283\\u20D2',\n\tnsupseteq: '\\u2289',\n\tnsupseteqq: '\\u2AC6\\u0338',\n\tntgl: '\\u2279',\n\tNtilde: '\\u00D1',\n\tntilde: '\\u00F1',\n\tntlg: '\\u2278',\n\tntriangleleft: '\\u22EA',\n\tntrianglelefteq: '\\u22EC',\n\tntriangleright: '\\u22EB',\n\tntrianglerighteq: '\\u22ED',\n\tNu: '\\u039D',\n\tnu: '\\u03BD',\n\tnum: '\\u0023',\n\tnumero: '\\u2116',\n\tnumsp: '\\u2007',\n\tnvap: '\\u224D\\u20D2',\n\tnVDash: '\\u22AF',\n\tnVdash: '\\u22AE',\n\tnvDash: '\\u22AD',\n\tnvdash: '\\u22AC',\n\tnvge: '\\u2265\\u20D2',\n\tnvgt: '\\u003E\\u20D2',\n\tnvHarr: '\\u2904',\n\tnvinfin: '\\u29DE',\n\tnvlArr: '\\u2902',\n\tnvle: '\\u2264\\u20D2',\n\tnvlt: '\\u003C\\u20D2',\n\tnvltrie: '\\u22B4\\u20D2',\n\tnvrArr: '\\u2903',\n\tnvrtrie: '\\u22B5\\u20D2',\n\tnvsim: '\\u223C\\u20D2',\n\tnwarhk: '\\u2923',\n\tnwArr: '\\u21D6',\n\tnwarr: '\\u2196',\n\tnwarrow: '\\u2196',\n\tnwnear: '\\u2927',\n\tOacute: '\\u00D3',\n\toacute: '\\u00F3',\n\toast: '\\u229B',\n\tocir: '\\u229A',\n\tOcirc: '\\u00D4',\n\tocirc: '\\u00F4',\n\tOcy: '\\u041E',\n\tocy: '\\u043E',\n\todash: '\\u229D',\n\tOdblac: '\\u0150',\n\todblac: '\\u0151',\n\todiv: '\\u2A38',\n\todot: '\\u2299',\n\todsold: '\\u29BC',\n\tOElig: '\\u0152',\n\toelig: '\\u0153',\n\tofcir: '\\u29BF',\n\tOfr: '\\uD835\\uDD12',\n\tofr: '\\uD835\\uDD2C',\n\togon: '\\u02DB',\n\tOgrave: '\\u00D2',\n\tograve: '\\u00F2',\n\togt: '\\u29C1',\n\tohbar: '\\u29B5',\n\tohm: '\\u03A9',\n\toint: '\\u222E',\n\tolarr: '\\u21BA',\n\tolcir: '\\u29BE',\n\tolcross: '\\u29BB',\n\toline: '\\u203E',\n\tolt: '\\u29C0',\n\tOmacr: '\\u014C',\n\tomacr: '\\u014D',\n\tOmega: '\\u03A9',\n\tomega: '\\u03C9',\n\tOmicron: '\\u039F',\n\tomicron: '\\u03BF',\n\tomid: '\\u29B6',\n\tominus: '\\u2296',\n\tOopf: '\\uD835\\uDD46',\n\toopf: '\\uD835\\uDD60',\n\topar: '\\u29B7',\n\tOpenCurlyDoubleQuote: '\\u201C',\n\tOpenCurlyQuote: '\\u2018',\n\toperp: '\\u29B9',\n\toplus: '\\u2295',\n\tOr: '\\u2A54',\n\tor: '\\u2228',\n\torarr: '\\u21BB',\n\tord: '\\u2A5D',\n\torder: '\\u2134',\n\torderof: '\\u2134',\n\tordf: '\\u00AA',\n\tordm: '\\u00BA',\n\torigof: '\\u22B6',\n\toror: '\\u2A56',\n\torslope: '\\u2A57',\n\torv: '\\u2A5B',\n\toS: '\\u24C8',\n\tOscr: '\\uD835\\uDCAA',\n\toscr: '\\u2134',\n\tOslash: '\\u00D8',\n\toslash: '\\u00F8',\n\tosol: '\\u2298',\n\tOtilde: '\\u00D5',\n\totilde: '\\u00F5',\n\tOtimes: '\\u2A37',\n\totimes: '\\u2297',\n\totimesas: '\\u2A36',\n\tOuml: '\\u00D6',\n\touml: '\\u00F6',\n\tovbar: '\\u233D',\n\tOverBar: '\\u203E',\n\tOverBrace: '\\u23DE',\n\tOverBracket: '\\u23B4',\n\tOverParenthesis: '\\u23DC',\n\tpar: '\\u2225',\n\tpara: '\\u00B6',\n\tparallel: '\\u2225',\n\tparsim: '\\u2AF3',\n\tparsl: '\\u2AFD',\n\tpart: '\\u2202',\n\tPartialD: '\\u2202',\n\tPcy: '\\u041F',\n\tpcy: '\\u043F',\n\tpercnt: '\\u0025',\n\tperiod: '\\u002E',\n\tpermil: '\\u2030',\n\tperp: '\\u22A5',\n\tpertenk: '\\u2031',\n\tPfr: '\\uD835\\uDD13',\n\tpfr: '\\uD835\\uDD2D',\n\tPhi: '\\u03A6',\n\tphi: '\\u03C6',\n\tphiv: '\\u03D5',\n\tphmmat: '\\u2133',\n\tphone: '\\u260E',\n\tPi: '\\u03A0',\n\tpi: '\\u03C0',\n\tpitchfork: '\\u22D4',\n\tpiv: '\\u03D6',\n\tplanck: '\\u210F',\n\tplanckh: '\\u210E',\n\tplankv: '\\u210F',\n\tplus: '\\u002B',\n\tplusacir: '\\u2A23',\n\tplusb: '\\u229E',\n\tpluscir: '\\u2A22',\n\tplusdo: '\\u2214',\n\tplusdu: '\\u2A25',\n\tpluse: '\\u2A72',\n\tPlusMinus: '\\u00B1',\n\tplusmn: '\\u00B1',\n\tplussim: '\\u2A26',\n\tplustwo: '\\u2A27',\n\tpm: '\\u00B1',\n\tPoincareplane: '\\u210C',\n\tpointint: '\\u2A15',\n\tPopf: '\\u2119',\n\tpopf: '\\uD835\\uDD61',\n\tpound: '\\u00A3',\n\tPr: '\\u2ABB',\n\tpr: '\\u227A',\n\tprap: '\\u2AB7',\n\tprcue: '\\u227C',\n\tprE: '\\u2AB3',\n\tpre: '\\u2AAF',\n\tprec: '\\u227A',\n\tprecapprox: '\\u2AB7',\n\tpreccurlyeq: '\\u227C',\n\tPrecedes: '\\u227A',\n\tPrecedesEqual: '\\u2AAF',\n\tPrecedesSlantEqual: '\\u227C',\n\tPrecedesTilde: '\\u227E',\n\tpreceq: '\\u2AAF',\n\tprecnapprox: '\\u2AB9',\n\tprecneqq: '\\u2AB5',\n\tprecnsim: '\\u22E8',\n\tprecsim: '\\u227E',\n\tPrime: '\\u2033',\n\tprime: '\\u2032',\n\tprimes: '\\u2119',\n\tprnap: '\\u2AB9',\n\tprnE: '\\u2AB5',\n\tprnsim: '\\u22E8',\n\tprod: '\\u220F',\n\tProduct: '\\u220F',\n\tprofalar: '\\u232E',\n\tprofline: '\\u2312',\n\tprofsurf: '\\u2313',\n\tprop: '\\u221D',\n\tProportion: '\\u2237',\n\tProportional: '\\u221D',\n\tpropto: '\\u221D',\n\tprsim: '\\u227E',\n\tprurel: '\\u22B0',\n\tPscr: '\\uD835\\uDCAB',\n\tpscr: '\\uD835\\uDCC5',\n\tPsi: '\\u03A8',\n\tpsi: '\\u03C8',\n\tpuncsp: '\\u2008',\n\tQfr: '\\uD835\\uDD14',\n\tqfr: '\\uD835\\uDD2E',\n\tqint: '\\u2A0C',\n\tQopf: '\\u211A',\n\tqopf: '\\uD835\\uDD62',\n\tqprime: '\\u2057',\n\tQscr: '\\uD835\\uDCAC',\n\tqscr: '\\uD835\\uDCC6',\n\tquaternions: '\\u210D',\n\tquatint: '\\u2A16',\n\tquest: '\\u003F',\n\tquesteq: '\\u225F',\n\tQUOT: '\\u0022',\n\tquot: '\\u0022',\n\trAarr: '\\u21DB',\n\trace: '\\u223D\\u0331',\n\tRacute: '\\u0154',\n\tracute: '\\u0155',\n\tradic: '\\u221A',\n\traemptyv: '\\u29B3',\n\tRang: '\\u27EB',\n\trang: '\\u27E9',\n\trangd: '\\u2992',\n\trange: '\\u29A5',\n\trangle: '\\u27E9',\n\traquo: '\\u00BB',\n\tRarr: '\\u21A0',\n\trArr: '\\u21D2',\n\trarr: '\\u2192',\n\trarrap: '\\u2975',\n\trarrb: '\\u21E5',\n\trarrbfs: '\\u2920',\n\trarrc: '\\u2933',\n\trarrfs: '\\u291E',\n\trarrhk: '\\u21AA',\n\trarrlp: '\\u21AC',\n\trarrpl: '\\u2945',\n\trarrsim: '\\u2974',\n\tRarrtl: '\\u2916',\n\trarrtl: '\\u21A3',\n\trarrw: '\\u219D',\n\trAtail: '\\u291C',\n\tratail: '\\u291A',\n\tratio: '\\u2236',\n\trationals: '\\u211A',\n\tRBarr: '\\u2910',\n\trBarr: '\\u290F',\n\trbarr: '\\u290D',\n\trbbrk: '\\u2773',\n\trbrace: '\\u007D',\n\trbrack: '\\u005D',\n\trbrke: '\\u298C',\n\trbrksld: '\\u298E',\n\trbrkslu: '\\u2990',\n\tRcaron: '\\u0158',\n\trcaron: '\\u0159',\n\tRcedil: '\\u0156',\n\trcedil: '\\u0157',\n\trceil: '\\u2309',\n\trcub: '\\u007D',\n\tRcy: '\\u0420',\n\trcy: '\\u0440',\n\trdca: '\\u2937',\n\trdldhar: '\\u2969',\n\trdquo: '\\u201D',\n\trdquor: '\\u201D',\n\trdsh: '\\u21B3',\n\tRe: '\\u211C',\n\treal: '\\u211C',\n\trealine: '\\u211B',\n\trealpart: '\\u211C',\n\treals: '\\u211D',\n\trect: '\\u25AD',\n\tREG: '\\u00AE',\n\treg: '\\u00AE',\n\tReverseElement: '\\u220B',\n\tReverseEquilibrium: '\\u21CB',\n\tReverseUpEquilibrium: '\\u296F',\n\trfisht: '\\u297D',\n\trfloor: '\\u230B',\n\tRfr: '\\u211C',\n\trfr: '\\uD835\\uDD2F',\n\trHar: '\\u2964',\n\trhard: '\\u21C1',\n\trharu: '\\u21C0',\n\trharul: '\\u296C',\n\tRho: '\\u03A1',\n\trho: '\\u03C1',\n\trhov: '\\u03F1',\n\tRightAngleBracket: '\\u27E9',\n\tRightArrow: '\\u2192',\n\tRightarrow: '\\u21D2',\n\trightarrow: '\\u2192',\n\tRightArrowBar: '\\u21E5',\n\tRightArrowLeftArrow: '\\u21C4',\n\trightarrowtail: '\\u21A3',\n\tRightCeiling: '\\u2309',\n\tRightDoubleBracket: '\\u27E7',\n\tRightDownTeeVector: '\\u295D',\n\tRightDownVector: '\\u21C2',\n\tRightDownVectorBar: '\\u2955',\n\tRightFloor: '\\u230B',\n\trightharpoondown: '\\u21C1',\n\trightharpoonup: '\\u21C0',\n\trightleftarrows: '\\u21C4',\n\trightleftharpoons: '\\u21CC',\n\trightrightarrows: '\\u21C9',\n\trightsquigarrow: '\\u219D',\n\tRightTee: '\\u22A2',\n\tRightTeeArrow: '\\u21A6',\n\tRightTeeVector: '\\u295B',\n\trightthreetimes: '\\u22CC',\n\tRightTriangle: '\\u22B3',\n\tRightTriangleBar: '\\u29D0',\n\tRightTriangleEqual: '\\u22B5',\n\tRightUpDownVector: '\\u294F',\n\tRightUpTeeVector: '\\u295C',\n\tRightUpVector: '\\u21BE',\n\tRightUpVectorBar: '\\u2954',\n\tRightVector: '\\u21C0',\n\tRightVectorBar: '\\u2953',\n\tring: '\\u02DA',\n\trisingdotseq: '\\u2253',\n\trlarr: '\\u21C4',\n\trlhar: '\\u21CC',\n\trlm: '\\u200F',\n\trmoust: '\\u23B1',\n\trmoustache: '\\u23B1',\n\trnmid: '\\u2AEE',\n\troang: '\\u27ED',\n\troarr: '\\u21FE',\n\trobrk: '\\u27E7',\n\tropar: '\\u2986',\n\tRopf: '\\u211D',\n\tropf: '\\uD835\\uDD63',\n\troplus: '\\u2A2E',\n\trotimes: '\\u2A35',\n\tRoundImplies: '\\u2970',\n\trpar: '\\u0029',\n\trpargt: '\\u2994',\n\trppolint: '\\u2A12',\n\trrarr: '\\u21C9',\n\tRrightarrow: '\\u21DB',\n\trsaquo: '\\u203A',\n\tRscr: '\\u211B',\n\trscr: '\\uD835\\uDCC7',\n\tRsh: '\\u21B1',\n\trsh: '\\u21B1',\n\trsqb: '\\u005D',\n\trsquo: '\\u2019',\n\trsquor: '\\u2019',\n\trthree: '\\u22CC',\n\trtimes: '\\u22CA',\n\trtri: '\\u25B9',\n\trtrie: '\\u22B5',\n\trtrif: '\\u25B8',\n\trtriltri: '\\u29CE',\n\tRuleDelayed: '\\u29F4',\n\truluhar: '\\u2968',\n\trx: '\\u211E',\n\tSacute: '\\u015A',\n\tsacute: '\\u015B',\n\tsbquo: '\\u201A',\n\tSc: '\\u2ABC',\n\tsc: '\\u227B',\n\tscap: '\\u2AB8',\n\tScaron: '\\u0160',\n\tscaron: '\\u0161',\n\tsccue: '\\u227D',\n\tscE: '\\u2AB4',\n\tsce: '\\u2AB0',\n\tScedil: '\\u015E',\n\tscedil: '\\u015F',\n\tScirc: '\\u015C',\n\tscirc: '\\u015D',\n\tscnap: '\\u2ABA',\n\tscnE: '\\u2AB6',\n\tscnsim: '\\u22E9',\n\tscpolint: '\\u2A13',\n\tscsim: '\\u227F',\n\tScy: '\\u0421',\n\tscy: '\\u0441',\n\tsdot: '\\u22C5',\n\tsdotb: '\\u22A1',\n\tsdote: '\\u2A66',\n\tsearhk: '\\u2925',\n\tseArr: '\\u21D8',\n\tsearr: '\\u2198',\n\tsearrow: '\\u2198',\n\tsect: '\\u00A7',\n\tsemi: '\\u003B',\n\tseswar: '\\u2929',\n\tsetminus: '\\u2216',\n\tsetmn: '\\u2216',\n\tsext: '\\u2736',\n\tSfr: '\\uD835\\uDD16',\n\tsfr: '\\uD835\\uDD30',\n\tsfrown: '\\u2322',\n\tsharp: '\\u266F',\n\tSHCHcy: '\\u0429',\n\tshchcy: '\\u0449',\n\tSHcy: '\\u0428',\n\tshcy: '\\u0448',\n\tShortDownArrow: '\\u2193',\n\tShortLeftArrow: '\\u2190',\n\tshortmid: '\\u2223',\n\tshortparallel: '\\u2225',\n\tShortRightArrow: '\\u2192',\n\tShortUpArrow: '\\u2191',\n\tshy: '\\u00AD',\n\tSigma: '\\u03A3',\n\tsigma: '\\u03C3',\n\tsigmaf: '\\u03C2',\n\tsigmav: '\\u03C2',\n\tsim: '\\u223C',\n\tsimdot: '\\u2A6A',\n\tsime: '\\u2243',\n\tsimeq: '\\u2243',\n\tsimg: '\\u2A9E',\n\tsimgE: '\\u2AA0',\n\tsiml: '\\u2A9D',\n\tsimlE: '\\u2A9F',\n\tsimne: '\\u2246',\n\tsimplus: '\\u2A24',\n\tsimrarr: '\\u2972',\n\tslarr: '\\u2190',\n\tSmallCircle: '\\u2218',\n\tsmallsetminus: '\\u2216',\n\tsmashp: '\\u2A33',\n\tsmeparsl: '\\u29E4',\n\tsmid: '\\u2223',\n\tsmile: '\\u2323',\n\tsmt: '\\u2AAA',\n\tsmte: '\\u2AAC',\n\tsmtes: '\\u2AAC\\uFE00',\n\tSOFTcy: '\\u042C',\n\tsoftcy: '\\u044C',\n\tsol: '\\u002F',\n\tsolb: '\\u29C4',\n\tsolbar: '\\u233F',\n\tSopf: '\\uD835\\uDD4A',\n\tsopf: '\\uD835\\uDD64',\n\tspades: '\\u2660',\n\tspadesuit: '\\u2660',\n\tspar: '\\u2225',\n\tsqcap: '\\u2293',\n\tsqcaps: '\\u2293\\uFE00',\n\tsqcup: '\\u2294',\n\tsqcups: '\\u2294\\uFE00',\n\tSqrt: '\\u221A',\n\tsqsub: '\\u228F',\n\tsqsube: '\\u2291',\n\tsqsubset: '\\u228F',\n\tsqsubseteq: '\\u2291',\n\tsqsup: '\\u2290',\n\tsqsupe: '\\u2292',\n\tsqsupset: '\\u2290',\n\tsqsupseteq: '\\u2292',\n\tsqu: '\\u25A1',\n\tSquare: '\\u25A1',\n\tsquare: '\\u25A1',\n\tSquareIntersection: '\\u2293',\n\tSquareSubset: '\\u228F',\n\tSquareSubsetEqual: '\\u2291',\n\tSquareSuperset: '\\u2290',\n\tSquareSupersetEqual: '\\u2292',\n\tSquareUnion: '\\u2294',\n\tsquarf: '\\u25AA',\n\tsquf: '\\u25AA',\n\tsrarr: '\\u2192',\n\tSscr: '\\uD835\\uDCAE',\n\tsscr: '\\uD835\\uDCC8',\n\tssetmn: '\\u2216',\n\tssmile: '\\u2323',\n\tsstarf: '\\u22C6',\n\tStar: '\\u22C6',\n\tstar: '\\u2606',\n\tstarf: '\\u2605',\n\tstraightepsilon: '\\u03F5',\n\tstraightphi: '\\u03D5',\n\tstrns: '\\u00AF',\n\tSub: '\\u22D0',\n\tsub: '\\u2282',\n\tsubdot: '\\u2ABD',\n\tsubE: '\\u2AC5',\n\tsube: '\\u2286',\n\tsubedot: '\\u2AC3',\n\tsubmult: '\\u2AC1',\n\tsubnE: '\\u2ACB',\n\tsubne: '\\u228A',\n\tsubplus: '\\u2ABF',\n\tsubrarr: '\\u2979',\n\tSubset: '\\u22D0',\n\tsubset: '\\u2282',\n\tsubseteq: '\\u2286',\n\tsubseteqq: '\\u2AC5',\n\tSubsetEqual: '\\u2286',\n\tsubsetneq: '\\u228A',\n\tsubsetneqq: '\\u2ACB',\n\tsubsim: '\\u2AC7',\n\tsubsub: '\\u2AD5',\n\tsubsup: '\\u2AD3',\n\tsucc: '\\u227B',\n\tsuccapprox: '\\u2AB8',\n\tsucccurlyeq: '\\u227D',\n\tSucceeds: '\\u227B',\n\tSucceedsEqual: '\\u2AB0',\n\tSucceedsSlantEqual: '\\u227D',\n\tSucceedsTilde: '\\u227F',\n\tsucceq: '\\u2AB0',\n\tsuccnapprox: '\\u2ABA',\n\tsuccneqq: '\\u2AB6',\n\tsuccnsim: '\\u22E9',\n\tsuccsim: '\\u227F',\n\tSuchThat: '\\u220B',\n\tSum: '\\u2211',\n\tsum: '\\u2211',\n\tsung: '\\u266A',\n\tSup: '\\u22D1',\n\tsup: '\\u2283',\n\tsup1: '\\u00B9',\n\tsup2: '\\u00B2',\n\tsup3: '\\u00B3',\n\tsupdot: '\\u2ABE',\n\tsupdsub: '\\u2AD8',\n\tsupE: '\\u2AC6',\n\tsupe: '\\u2287',\n\tsupedot: '\\u2AC4',\n\tSuperset: '\\u2283',\n\tSupersetEqual: '\\u2287',\n\tsuphsol: '\\u27C9',\n\tsuphsub: '\\u2AD7',\n\tsuplarr: '\\u297B',\n\tsupmult: '\\u2AC2',\n\tsupnE: '\\u2ACC',\n\tsupne: '\\u228B',\n\tsupplus: '\\u2AC0',\n\tSupset: '\\u22D1',\n\tsupset: '\\u2283',\n\tsupseteq: '\\u2287',\n\tsupseteqq: '\\u2AC6',\n\tsupsetneq: '\\u228B',\n\tsupsetneqq: '\\u2ACC',\n\tsupsim: '\\u2AC8',\n\tsupsub: '\\u2AD4',\n\tsupsup: '\\u2AD6',\n\tswarhk: '\\u2926',\n\tswArr: '\\u21D9',\n\tswarr: '\\u2199',\n\tswarrow: '\\u2199',\n\tswnwar: '\\u292A',\n\tszlig: '\\u00DF',\n\tTab: '\\u0009',\n\ttarget: '\\u2316',\n\tTau: '\\u03A4',\n\ttau: '\\u03C4',\n\ttbrk: '\\u23B4',\n\tTcaron: '\\u0164',\n\ttcaron: '\\u0165',\n\tTcedil: '\\u0162',\n\ttcedil: '\\u0163',\n\tTcy: '\\u0422',\n\ttcy: '\\u0442',\n\ttdot: '\\u20DB',\n\ttelrec: '\\u2315',\n\tTfr: '\\uD835\\uDD17',\n\ttfr: '\\uD835\\uDD31',\n\tthere4: '\\u2234',\n\tTherefore: '\\u2234',\n\ttherefore: '\\u2234',\n\tTheta: '\\u0398',\n\ttheta: '\\u03B8',\n\tthetasym: '\\u03D1',\n\tthetav: '\\u03D1',\n\tthickapprox: '\\u2248',\n\tthicksim: '\\u223C',\n\tThickSpace: '\\u205F\\u200A',\n\tthinsp: '\\u2009',\n\tThinSpace: '\\u2009',\n\tthkap: '\\u2248',\n\tthksim: '\\u223C',\n\tTHORN: '\\u00DE',\n\tthorn: '\\u00FE',\n\tTilde: '\\u223C',\n\ttilde: '\\u02DC',\n\tTildeEqual: '\\u2243',\n\tTildeFullEqual: '\\u2245',\n\tTildeTilde: '\\u2248',\n\ttimes: '\\u00D7',\n\ttimesb: '\\u22A0',\n\ttimesbar: '\\u2A31',\n\ttimesd: '\\u2A30',\n\ttint: '\\u222D',\n\ttoea: '\\u2928',\n\ttop: '\\u22A4',\n\ttopbot: '\\u2336',\n\ttopcir: '\\u2AF1',\n\tTopf: '\\uD835\\uDD4B',\n\ttopf: '\\uD835\\uDD65',\n\ttopfork: '\\u2ADA',\n\ttosa: '\\u2929',\n\ttprime: '\\u2034',\n\tTRADE: '\\u2122',\n\ttrade: '\\u2122',\n\ttriangle: '\\u25B5',\n\ttriangledown: '\\u25BF',\n\ttriangleleft: '\\u25C3',\n\ttrianglelefteq: '\\u22B4',\n\ttriangleq: '\\u225C',\n\ttriangleright: '\\u25B9',\n\ttrianglerighteq: '\\u22B5',\n\ttridot: '\\u25EC',\n\ttrie: '\\u225C',\n\ttriminus: '\\u2A3A',\n\tTripleDot: '\\u20DB',\n\ttriplus: '\\u2A39',\n\ttrisb: '\\u29CD',\n\ttritime: '\\u2A3B',\n\ttrpezium: '\\u23E2',\n\tTscr: '\\uD835\\uDCAF',\n\ttscr: '\\uD835\\uDCC9',\n\tTScy: '\\u0426',\n\ttscy: '\\u0446',\n\tTSHcy: '\\u040B',\n\ttshcy: '\\u045B',\n\tTstrok: '\\u0166',\n\ttstrok: '\\u0167',\n\ttwixt: '\\u226C',\n\ttwoheadleftarrow: '\\u219E',\n\ttwoheadrightarrow: '\\u21A0',\n\tUacute: '\\u00DA',\n\tuacute: '\\u00FA',\n\tUarr: '\\u219F',\n\tuArr: '\\u21D1',\n\tuarr: '\\u2191',\n\tUarrocir: '\\u2949',\n\tUbrcy: '\\u040E',\n\tubrcy: '\\u045E',\n\tUbreve: '\\u016C',\n\tubreve: '\\u016D',\n\tUcirc: '\\u00DB',\n\tucirc: '\\u00FB',\n\tUcy: '\\u0423',\n\tucy: '\\u0443',\n\tudarr: '\\u21C5',\n\tUdblac: '\\u0170',\n\tudblac: '\\u0171',\n\tudhar: '\\u296E',\n\tufisht: '\\u297E',\n\tUfr: '\\uD835\\uDD18',\n\tufr: '\\uD835\\uDD32',\n\tUgrave: '\\u00D9',\n\tugrave: '\\u00F9',\n\tuHar: '\\u2963',\n\tuharl: '\\u21BF',\n\tuharr: '\\u21BE',\n\tuhblk: '\\u2580',\n\tulcorn: '\\u231C',\n\tulcorner: '\\u231C',\n\tulcrop: '\\u230F',\n\tultri: '\\u25F8',\n\tUmacr: '\\u016A',\n\tumacr: '\\u016B',\n\tuml: '\\u00A8',\n\tUnderBar: '\\u005F',\n\tUnderBrace: '\\u23DF',\n\tUnderBracket: '\\u23B5',\n\tUnderParenthesis: '\\u23DD',\n\tUnion: '\\u22C3',\n\tUnionPlus: '\\u228E',\n\tUogon: '\\u0172',\n\tuogon: '\\u0173',\n\tUopf: '\\uD835\\uDD4C',\n\tuopf: '\\uD835\\uDD66',\n\tUpArrow: '\\u2191',\n\tUparrow: '\\u21D1',\n\tuparrow: '\\u2191',\n\tUpArrowBar: '\\u2912',\n\tUpArrowDownArrow: '\\u21C5',\n\tUpDownArrow: '\\u2195',\n\tUpdownarrow: '\\u21D5',\n\tupdownarrow: '\\u2195',\n\tUpEquilibrium: '\\u296E',\n\tupharpoonleft: '\\u21BF',\n\tupharpoonright: '\\u21BE',\n\tuplus: '\\u228E',\n\tUpperLeftArrow: '\\u2196',\n\tUpperRightArrow: '\\u2197',\n\tUpsi: '\\u03D2',\n\tupsi: '\\u03C5',\n\tupsih: '\\u03D2',\n\tUpsilon: '\\u03A5',\n\tupsilon: '\\u03C5',\n\tUpTee: '\\u22A5',\n\tUpTeeArrow: '\\u21A5',\n\tupuparrows: '\\u21C8',\n\turcorn: '\\u231D',\n\turcorner: '\\u231D',\n\turcrop: '\\u230E',\n\tUring: '\\u016E',\n\turing: '\\u016F',\n\turtri: '\\u25F9',\n\tUscr: '\\uD835\\uDCB0',\n\tuscr: '\\uD835\\uDCCA',\n\tutdot: '\\u22F0',\n\tUtilde: '\\u0168',\n\tutilde: '\\u0169',\n\tutri: '\\u25B5',\n\tutrif: '\\u25B4',\n\tuuarr: '\\u21C8',\n\tUuml: '\\u00DC',\n\tuuml: '\\u00FC',\n\tuwangle: '\\u29A7',\n\tvangrt: '\\u299C',\n\tvarepsilon: '\\u03F5',\n\tvarkappa: '\\u03F0',\n\tvarnothing: '\\u2205',\n\tvarphi: '\\u03D5',\n\tvarpi: '\\u03D6',\n\tvarpropto: '\\u221D',\n\tvArr: '\\u21D5',\n\tvarr: '\\u2195',\n\tvarrho: '\\u03F1',\n\tvarsigma: '\\u03C2',\n\tvarsubsetneq: '\\u228A\\uFE00',\n\tvarsubsetneqq: '\\u2ACB\\uFE00',\n\tvarsupsetneq: '\\u228B\\uFE00',\n\tvarsupsetneqq: '\\u2ACC\\uFE00',\n\tvartheta: '\\u03D1',\n\tvartriangleleft: '\\u22B2',\n\tvartriangleright: '\\u22B3',\n\tVbar: '\\u2AEB',\n\tvBar: '\\u2AE8',\n\tvBarv: '\\u2AE9',\n\tVcy: '\\u0412',\n\tvcy: '\\u0432',\n\tVDash: '\\u22AB',\n\tVdash: '\\u22A9',\n\tvDash: '\\u22A8',\n\tvdash: '\\u22A2',\n\tVdashl: '\\u2AE6',\n\tVee: '\\u22C1',\n\tvee: '\\u2228',\n\tveebar: '\\u22BB',\n\tveeeq: '\\u225A',\n\tvellip: '\\u22EE',\n\tVerbar: '\\u2016',\n\tverbar: '\\u007C',\n\tVert: '\\u2016',\n\tvert: '\\u007C',\n\tVerticalBar: '\\u2223',\n\tVerticalLine: '\\u007C',\n\tVerticalSeparator: '\\u2758',\n\tVerticalTilde: '\\u2240',\n\tVeryThinSpace: '\\u200A',\n\tVfr: '\\uD835\\uDD19',\n\tvfr: '\\uD835\\uDD33',\n\tvltri: '\\u22B2',\n\tvnsub: '\\u2282\\u20D2',\n\tvnsup: '\\u2283\\u20D2',\n\tVopf: '\\uD835\\uDD4D',\n\tvopf: '\\uD835\\uDD67',\n\tvprop: '\\u221D',\n\tvrtri: '\\u22B3',\n\tVscr: '\\uD835\\uDCB1',\n\tvscr: '\\uD835\\uDCCB',\n\tvsubnE: '\\u2ACB\\uFE00',\n\tvsubne: '\\u228A\\uFE00',\n\tvsupnE: '\\u2ACC\\uFE00',\n\tvsupne: '\\u228B\\uFE00',\n\tVvdash: '\\u22AA',\n\tvzigzag: '\\u299A',\n\tWcirc: '\\u0174',\n\twcirc: '\\u0175',\n\twedbar: '\\u2A5F',\n\tWedge: '\\u22C0',\n\twedge: '\\u2227',\n\twedgeq: '\\u2259',\n\tweierp: '\\u2118',\n\tWfr: '\\uD835\\uDD1A',\n\twfr: '\\uD835\\uDD34',\n\tWopf: '\\uD835\\uDD4E',\n\twopf: '\\uD835\\uDD68',\n\twp: '\\u2118',\n\twr: '\\u2240',\n\twreath: '\\u2240',\n\tWscr: '\\uD835\\uDCB2',\n\twscr: '\\uD835\\uDCCC',\n\txcap: '\\u22C2',\n\txcirc: '\\u25EF',\n\txcup: '\\u22C3',\n\txdtri: '\\u25BD',\n\tXfr: '\\uD835\\uDD1B',\n\txfr: '\\uD835\\uDD35',\n\txhArr: '\\u27FA',\n\txharr: '\\u27F7',\n\tXi: '\\u039E',\n\txi: '\\u03BE',\n\txlArr: '\\u27F8',\n\txlarr: '\\u27F5',\n\txmap: '\\u27FC',\n\txnis: '\\u22FB',\n\txodot: '\\u2A00',\n\tXopf: '\\uD835\\uDD4F',\n\txopf: '\\uD835\\uDD69',\n\txoplus: '\\u2A01',\n\txotime: '\\u2A02',\n\txrArr: '\\u27F9',\n\txrarr: '\\u27F6',\n\tXscr: '\\uD835\\uDCB3',\n\txscr: '\\uD835\\uDCCD',\n\txsqcup: '\\u2A06',\n\txuplus: '\\u2A04',\n\txutri: '\\u25B3',\n\txvee: '\\u22C1',\n\txwedge: '\\u22C0',\n\tYacute: '\\u00DD',\n\tyacute: '\\u00FD',\n\tYAcy: '\\u042F',\n\tyacy: '\\u044F',\n\tYcirc: '\\u0176',\n\tycirc: '\\u0177',\n\tYcy: '\\u042B',\n\tycy: '\\u044B',\n\tyen: '\\u00A5',\n\tYfr: '\\uD835\\uDD1C',\n\tyfr: '\\uD835\\uDD36',\n\tYIcy: '\\u0407',\n\tyicy: '\\u0457',\n\tYopf: '\\uD835\\uDD50',\n\tyopf: '\\uD835\\uDD6A',\n\tYscr: '\\uD835\\uDCB4',\n\tyscr: '\\uD835\\uDCCE',\n\tYUcy: '\\u042E',\n\tyucy: '\\u044E',\n\tYuml: '\\u0178',\n\tyuml: '\\u00FF',\n\tZacute: '\\u0179',\n\tzacute: '\\u017A',\n\tZcaron: '\\u017D',\n\tzcaron: '\\u017E',\n\tZcy: '\\u0417',\n\tzcy: '\\u0437',\n\tZdot: '\\u017B',\n\tzdot: '\\u017C',\n\tzeetrf: '\\u2128',\n\tZeroWidthSpace: '\\u200B',\n\tZeta: '\\u0396',\n\tzeta: '\\u03B6',\n\tZfr: '\\u2128',\n\tzfr: '\\uD835\\uDD37',\n\tZHcy: '\\u0416',\n\tzhcy: '\\u0436',\n\tzigrarr: '\\u21DD',\n\tZopf: '\\u2124',\n\tzopf: '\\uD835\\uDD6B',\n\tZscr: '\\uD835\\uDCB5',\n\tzscr: '\\uD835\\uDCCF',\n\tzwj: '\\u200D',\n\tzwnj: '\\u200C',\n});\n\n/**\n * @deprecated use `HTML_ENTITIES` instead\n * @see HTML_ENTITIES\n */\nexports.entityMap = exports.HTML_ENTITIES;\n","var dom = require('./dom')\nexports.DOMImplementation = dom.DOMImplementation\nexports.XMLSerializer = dom.XMLSerializer\nexports.DOMParser = require('./dom-parser').DOMParser\n","var NAMESPACE = require(\"./conventions\").NAMESPACE;\n\n//[4] \tNameStartChar\t ::= \t\":\" | [A-Z] | \"_\" | [a-z] | [#xC0-#xD6] | [#xD8-#xF6] | [#xF8-#x2FF] | [#x370-#x37D] | [#x37F-#x1FFF] | [#x200C-#x200D] | [#x2070-#x218F] | [#x2C00-#x2FEF] | [#x3001-#xD7FF] | [#xF900-#xFDCF] | [#xFDF0-#xFFFD] | [#x10000-#xEFFFF]\n//[4a] \tNameChar\t ::= \tNameStartChar | \"-\" | \".\" | [0-9] | #xB7 | [#x0300-#x036F] | [#x203F-#x2040]\n//[5] \tName\t ::= \tNameStartChar (NameChar)*\nvar nameStartChar = /[A-Z_a-z\\xC0-\\xD6\\xD8-\\xF6\\u00F8-\\u02FF\\u0370-\\u037D\\u037F-\\u1FFF\\u200C-\\u200D\\u2070-\\u218F\\u2C00-\\u2FEF\\u3001-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFFD]///\\u10000-\\uEFFFF\nvar nameChar = new RegExp(\"[\\\\-\\\\.0-9\"+nameStartChar.source.slice(1,-1)+\"\\\\u00B7\\\\u0300-\\\\u036F\\\\u203F-\\\\u2040]\");\nvar tagNamePattern = new RegExp('^'+nameStartChar.source+nameChar.source+'*(?:\\:'+nameStartChar.source+nameChar.source+'*)?$');\n//var tagNamePattern = /^[a-zA-Z_][\\w\\-\\.]*(?:\\:[a-zA-Z_][\\w\\-\\.]*)?$/\n//var handlers = 'resolveEntity,getExternalSubset,characters,endDocument,endElement,endPrefixMapping,ignorableWhitespace,processingInstruction,setDocumentLocator,skippedEntity,startDocument,startElement,startPrefixMapping,notationDecl,unparsedEntityDecl,error,fatalError,warning,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,comment,endCDATA,endDTD,endEntity,startCDATA,startDTD,startEntity'.split(',')\n\n//S_TAG,\tS_ATTR,\tS_EQ,\tS_ATTR_NOQUOT_VALUE\n//S_ATTR_SPACE,\tS_ATTR_END,\tS_TAG_SPACE, S_TAG_CLOSE\nvar S_TAG = 0;//tag name offerring\nvar S_ATTR = 1;//attr name offerring\nvar S_ATTR_SPACE=2;//attr name end and space offer\nvar S_EQ = 3;//=space?\nvar S_ATTR_NOQUOT_VALUE = 4;//attr value(no quot value only)\nvar S_ATTR_END = 5;//attr value end and no space(quot end)\nvar S_TAG_SPACE = 6;//(attr value end || tag end ) && (space offer)\nvar S_TAG_CLOSE = 7;//closed el\n\n/**\n * Creates an error that will not be caught by XMLReader aka the SAX parser.\n *\n * @param {string} message\n * @param {any?} locator Optional, can provide details about the location in the source\n * @constructor\n */\nfunction ParseError(message, locator) {\n\tthis.message = message\n\tthis.locator = locator\n\tif(Error.captureStackTrace) Error.captureStackTrace(this, ParseError);\n}\nParseError.prototype = new Error();\nParseError.prototype.name = ParseError.name\n\nfunction XMLReader(){\n\n}\n\nXMLReader.prototype = {\n\tparse:function(source,defaultNSMap,entityMap){\n\t\tvar domBuilder = this.domBuilder;\n\t\tdomBuilder.startDocument();\n\t\t_copy(defaultNSMap ,defaultNSMap = {})\n\t\tparse(source,defaultNSMap,entityMap,\n\t\t\t\tdomBuilder,this.errorHandler);\n\t\tdomBuilder.endDocument();\n\t}\n}\nfunction parse(source,defaultNSMapCopy,entityMap,domBuilder,errorHandler){\n\tfunction fixedFromCharCode(code) {\n\t\t// String.prototype.fromCharCode does not supports\n\t\t// > 2 bytes unicode chars directly\n\t\tif (code > 0xffff) {\n\t\t\tcode -= 0x10000;\n\t\t\tvar surrogate1 = 0xd800 + (code >> 10)\n\t\t\t\t, surrogate2 = 0xdc00 + (code & 0x3ff);\n\n\t\t\treturn String.fromCharCode(surrogate1, surrogate2);\n\t\t} else {\n\t\t\treturn String.fromCharCode(code);\n\t\t}\n\t}\n\tfunction entityReplacer(a){\n\t\tvar k = a.slice(1,-1);\n\t\tif (Object.hasOwnProperty.call(entityMap, k)) {\n\t\t\treturn entityMap[k];\n\t\t}else if(k.charAt(0) === '#'){\n\t\t\treturn fixedFromCharCode(parseInt(k.substr(1).replace('x','0x')))\n\t\t}else{\n\t\t\terrorHandler.error('entity not found:'+a);\n\t\t\treturn a;\n\t\t}\n\t}\n\tfunction appendText(end){//has some bugs\n\t\tif(end>start){\n\t\t\tvar xt = source.substring(start,end).replace(/&#?\\w+;/g,entityReplacer);\n\t\t\tlocator&&position(start);\n\t\t\tdomBuilder.characters(xt,0,end-start);\n\t\t\tstart = end\n\t\t}\n\t}\n\tfunction position(p,m){\n\t\twhile(p>=lineEnd && (m = linePattern.exec(source))){\n\t\t\tlineStart = m.index;\n\t\t\tlineEnd = lineStart + m[0].length;\n\t\t\tlocator.lineNumber++;\n\t\t\t//console.log('line++:',locator,startPos,endPos)\n\t\t}\n\t\tlocator.columnNumber = p-lineStart+1;\n\t}\n\tvar lineStart = 0;\n\tvar lineEnd = 0;\n\tvar linePattern = /.*(?:\\r\\n?|\\n)|.*$/g\n\tvar locator = domBuilder.locator;\n\n\tvar parseStack = [{currentNSMap:defaultNSMapCopy}]\n\tvar closeMap = {};\n\tvar start = 0;\n\twhile(true){\n\t\ttry{\n\t\t\tvar tagStart = source.indexOf('<',start);\n\t\t\tif(tagStart<0){\n\t\t\t\tif(!source.substr(start).match(/^\\s*$/)){\n\t\t\t\t\tvar doc = domBuilder.doc;\n\t \t\t\tvar text = doc.createTextNode(source.substr(start));\n\t \t\t\tdoc.appendChild(text);\n\t \t\t\tdomBuilder.currentElement = text;\n\t\t\t\t}\n\t\t\t\treturn;\n\t\t\t}\n\t\t\tif(tagStart>start){\n\t\t\t\tappendText(tagStart);\n\t\t\t}\n\t\t\tswitch(source.charAt(tagStart+1)){\n\t\t\tcase '/':\n\t\t\t\tvar end = source.indexOf('>',tagStart+3);\n\t\t\t\tvar tagName = source.substring(tagStart + 2, end).replace(/[ \\t\\n\\r]+$/g, '');\n\t\t\t\tvar config = parseStack.pop();\n\t\t\t\tif(end<0){\n\n\t \t\ttagName = source.substring(tagStart+2).replace(/[\\s<].*/,'');\n\t \t\terrorHandler.error(\"end tag name: \"+tagName+' is not complete:'+config.tagName);\n\t \t\tend = tagStart+1+tagName.length;\n\t \t}else if(tagName.match(/\\s\n\t\t\t\tlocator&&position(tagStart);\n\t\t\t\tend = parseInstruction(source,tagStart,domBuilder);\n\t\t\t\tbreak;\n\t\t\tcase '!':// start){\n\t\t\tstart = end;\n\t\t}else{\n\t\t\t//TODO: 这里有可能sax回退，有位置错误风险\n\t\t\tappendText(Math.max(tagStart,start)+1);\n\t\t}\n\t}\n}\nfunction copyLocator(f,t){\n\tt.lineNumber = f.lineNumber;\n\tt.columnNumber = f.columnNumber;\n\treturn t;\n}\n\n/**\n * @see #appendElement(source,elStartEnd,el,selfClosed,entityReplacer,domBuilder,parseStack);\n * @return end of the elementStartPart(end of elementEndPart for selfClosed el)\n */\nfunction parseElementStartPart(source,start,el,currentNSMap,entityReplacer,errorHandler){\n\n\t/**\n\t * @param {string} qname\n\t * @param {string} value\n\t * @param {number} startIndex\n\t */\n\tfunction addAttribute(qname, value, startIndex) {\n\t\tif (el.attributeNames.hasOwnProperty(qname)) {\n\t\t\terrorHandler.fatalError('Attribute ' + qname + ' redefined')\n\t\t}\n\t\tel.addValue(\n\t\t\tqname,\n\t\t\t// @see https://www.w3.org/TR/xml/#AVNormalize\n\t\t\t// since the xmldom sax parser does not \"interpret\" DTD the following is not implemented:\n\t\t\t// - recursive replacement of (DTD) entity references\n\t\t\t// - trimming and collapsing multiple spaces into a single one for attributes that are not of type CDATA\n\t\t\tvalue.replace(/[\\t\\n\\r]/g, ' ').replace(/&#?\\w+;/g, entityReplacer),\n\t\t\tstartIndex\n\t\t)\n\t}\n\tvar attrName;\n\tvar value;\n\tvar p = ++start;\n\tvar s = S_TAG;//status\n\twhile(true){\n\t\tvar c = source.charAt(p);\n\t\tswitch(c){\n\t\tcase '=':\n\t\t\tif(s === S_ATTR){//attrName\n\t\t\t\tattrName = source.slice(start,p);\n\t\t\t\ts = S_EQ;\n\t\t\t}else if(s === S_ATTR_SPACE){\n\t\t\t\ts = S_EQ;\n\t\t\t}else{\n\t\t\t\t//fatalError: equal must after attrName or space after attrName\n\t\t\t\tthrow new Error('attribute equal must after attrName'); // No known test case\n\t\t\t}\n\t\t\tbreak;\n\t\tcase '\\'':\n\t\tcase '\"':\n\t\t\tif(s === S_EQ || s === S_ATTR //|| s == S_ATTR_SPACE\n\t\t\t\t){//equal\n\t\t\t\tif(s === S_ATTR){\n\t\t\t\t\terrorHandler.warning('attribute value must after \"=\"')\n\t\t\t\t\tattrName = source.slice(start,p)\n\t\t\t\t}\n\t\t\t\tstart = p+1;\n\t\t\t\tp = source.indexOf(c,start)\n\t\t\t\tif(p>0){\n\t\t\t\t\tvalue = source.slice(start, p);\n\t\t\t\t\taddAttribute(attrName, value, start-1);\n\t\t\t\t\ts = S_ATTR_END;\n\t\t\t\t}else{\n\t\t\t\t\t//fatalError: no end quot match\n\t\t\t\t\tthrow new Error('attribute value no end \\''+c+'\\' match');\n\t\t\t\t}\n\t\t\t}else if(s == S_ATTR_NOQUOT_VALUE){\n\t\t\t\tvalue = source.slice(start, p);\n\t\t\t\taddAttribute(attrName, value, start);\n\t\t\t\terrorHandler.warning('attribute \"'+attrName+'\" missed start quot('+c+')!!');\n\t\t\t\tstart = p+1;\n\t\t\t\ts = S_ATTR_END\n\t\t\t}else{\n\t\t\t\t//fatalError: no equal before\n\t\t\t\tthrow new Error('attribute value must after \"=\"'); // No known test case\n\t\t\t}\n\t\t\tbreak;\n\t\tcase '/':\n\t\t\tswitch(s){\n\t\t\tcase S_TAG:\n\t\t\t\tel.setTagName(source.slice(start,p));\n\t\t\tcase S_ATTR_END:\n\t\t\tcase S_TAG_SPACE:\n\t\t\tcase S_TAG_CLOSE:\n\t\t\t\ts =S_TAG_CLOSE;\n\t\t\t\tel.closed = true;\n\t\t\tcase S_ATTR_NOQUOT_VALUE:\n\t\t\tcase S_ATTR:\n\t\t\t\tbreak;\n\t\t\t\tcase S_ATTR_SPACE:\n\t\t\t\t\tel.closed = true;\n\t\t\t\tbreak;\n\t\t\t//case S_EQ:\n\t\t\tdefault:\n\t\t\t\tthrow new Error(\"attribute invalid close char('/')\") // No known test case\n\t\t\t}\n\t\t\tbreak;\n\t\tcase ''://end document\n\t\t\terrorHandler.error('unexpected end of input');\n\t\t\tif(s == S_TAG){\n\t\t\t\tel.setTagName(source.slice(start,p));\n\t\t\t}\n\t\t\treturn p;\n\t\tcase '>':\n\t\t\tswitch(s){\n\t\t\tcase S_TAG:\n\t\t\t\tel.setTagName(source.slice(start,p));\n\t\t\tcase S_ATTR_END:\n\t\t\tcase S_TAG_SPACE:\n\t\t\tcase S_TAG_CLOSE:\n\t\t\t\tbreak;//normal\n\t\t\tcase S_ATTR_NOQUOT_VALUE://Compatible state\n\t\t\tcase S_ATTR:\n\t\t\t\tvalue = source.slice(start,p);\n\t\t\t\tif(value.slice(-1) === '/'){\n\t\t\t\t\tel.closed = true;\n\t\t\t\t\tvalue = value.slice(0,-1)\n\t\t\t\t}\n\t\t\tcase S_ATTR_SPACE:\n\t\t\t\tif(s === S_ATTR_SPACE){\n\t\t\t\t\tvalue = attrName;\n\t\t\t\t}\n\t\t\t\tif(s == S_ATTR_NOQUOT_VALUE){\n\t\t\t\t\terrorHandler.warning('attribute \"'+value+'\" missed quot(\")!');\n\t\t\t\t\taddAttribute(attrName, value, start)\n\t\t\t\t}else{\n\t\t\t\t\tif(!NAMESPACE.isHTML(currentNSMap['']) || !value.match(/^(?:disabled|checked|selected)$/i)){\n\t\t\t\t\t\terrorHandler.warning('attribute \"'+value+'\" missed value!! \"'+value+'\" instead!!')\n\t\t\t\t\t}\n\t\t\t\t\taddAttribute(value, value, start)\n\t\t\t\t}\n\t\t\t\tbreak;\n\t\t\tcase S_EQ:\n\t\t\t\tthrow new Error('attribute value missed!!');\n\t\t\t}\n//\t\t\tconsole.log(tagName,tagNamePattern,tagNamePattern.test(tagName))\n\t\t\treturn p;\n\t\t/*xml space '\\x20' | #x9 | #xD | #xA; */\n\t\tcase '\\u0080':\n\t\t\tc = ' ';\n\t\tdefault:\n\t\t\tif(c<= ' '){//space\n\t\t\t\tswitch(s){\n\t\t\t\tcase S_TAG:\n\t\t\t\t\tel.setTagName(source.slice(start,p));//tagName\n\t\t\t\t\ts = S_TAG_SPACE;\n\t\t\t\t\tbreak;\n\t\t\t\tcase S_ATTR:\n\t\t\t\t\tattrName = source.slice(start,p)\n\t\t\t\t\ts = S_ATTR_SPACE;\n\t\t\t\t\tbreak;\n\t\t\t\tcase S_ATTR_NOQUOT_VALUE:\n\t\t\t\t\tvar value = source.slice(start, p);\n\t\t\t\t\terrorHandler.warning('attribute \"'+value+'\" missed quot(\")!!');\n\t\t\t\t\taddAttribute(attrName, value, start)\n\t\t\t\tcase S_ATTR_END:\n\t\t\t\t\ts = S_TAG_SPACE;\n\t\t\t\t\tbreak;\n\t\t\t\t//case S_TAG_SPACE:\n\t\t\t\t//case S_EQ:\n\t\t\t\t//case S_ATTR_SPACE:\n\t\t\t\t//\tvoid();break;\n\t\t\t\t//case S_TAG_CLOSE:\n\t\t\t\t\t//ignore warning\n\t\t\t\t}\n\t\t\t}else{//not space\n//S_TAG,\tS_ATTR,\tS_EQ,\tS_ATTR_NOQUOT_VALUE\n//S_ATTR_SPACE,\tS_ATTR_END,\tS_TAG_SPACE, S_TAG_CLOSE\n\t\t\t\tswitch(s){\n\t\t\t\t//case S_TAG:void();break;\n\t\t\t\t//case S_ATTR:void();break;\n\t\t\t\t//case S_ATTR_NOQUOT_VALUE:void();break;\n\t\t\t\tcase S_ATTR_SPACE:\n\t\t\t\t\tvar tagName = el.tagName;\n\t\t\t\t\tif (!NAMESPACE.isHTML(currentNSMap['']) || !attrName.match(/^(?:disabled|checked|selected)$/i)) {\n\t\t\t\t\t\terrorHandler.warning('attribute \"'+attrName+'\" missed value!! \"'+attrName+'\" instead2!!')\n\t\t\t\t\t}\n\t\t\t\t\taddAttribute(attrName, attrName, start);\n\t\t\t\t\tstart = p;\n\t\t\t\t\ts = S_ATTR;\n\t\t\t\t\tbreak;\n\t\t\t\tcase S_ATTR_END:\n\t\t\t\t\terrorHandler.warning('attribute space is required\"'+attrName+'\"!!')\n\t\t\t\tcase S_TAG_SPACE:\n\t\t\t\t\ts = S_ATTR;\n\t\t\t\t\tstart = p;\n\t\t\t\t\tbreak;\n\t\t\t\tcase S_EQ:\n\t\t\t\t\ts = S_ATTR_NOQUOT_VALUE;\n\t\t\t\t\tstart = p;\n\t\t\t\t\tbreak;\n\t\t\t\tcase S_TAG_CLOSE:\n\t\t\t\t\tthrow new Error(\"elements closed character '/' and '>' must be connected to\");\n\t\t\t\t}\n\t\t\t}\n\t\t}//end outer switch\n\t\t//console.log('p++',p)\n\t\tp++;\n\t}\n}\n/**\n * @return true if has new namespace define\n */\nfunction appendElement(el,domBuilder,currentNSMap){\n\tvar tagName = el.tagName;\n\tvar localNSMap = null;\n\t//var currentNSMap = parseStack[parseStack.length-1].currentNSMap;\n\tvar i = el.length;\n\twhile(i--){\n\t\tvar a = el[i];\n\t\tvar qName = a.qName;\n\t\tvar value = a.value;\n\t\tvar nsp = qName.indexOf(':');\n\t\tif(nsp>0){\n\t\t\tvar prefix = a.prefix = qName.slice(0,nsp);\n\t\t\tvar localName = qName.slice(nsp+1);\n\t\t\tvar nsPrefix = prefix === 'xmlns' && localName\n\t\t}else{\n\t\t\tlocalName = qName;\n\t\t\tprefix = null\n\t\t\tnsPrefix = qName === 'xmlns' && ''\n\t\t}\n\t\t//can not set prefix,because prefix !== ''\n\t\ta.localName = localName ;\n\t\t//prefix == null for no ns prefix attribute\n\t\tif(nsPrefix !== false){//hack!!\n\t\t\tif(localNSMap == null){\n\t\t\t\tlocalNSMap = {}\n\t\t\t\t//console.log(currentNSMap,0)\n\t\t\t\t_copy(currentNSMap,currentNSMap={})\n\t\t\t\t//console.log(currentNSMap,1)\n\t\t\t}\n\t\t\tcurrentNSMap[nsPrefix] = localNSMap[nsPrefix] = value;\n\t\t\ta.uri = NAMESPACE.XMLNS\n\t\t\tdomBuilder.startPrefixMapping(nsPrefix, value)\n\t\t}\n\t}\n\tvar i = el.length;\n\twhile(i--){\n\t\ta = el[i];\n\t\tvar prefix = a.prefix;\n\t\tif(prefix){//no prefix attribute has no namespace\n\t\t\tif(prefix === 'xml'){\n\t\t\t\ta.uri = NAMESPACE.XML;\n\t\t\t}if(prefix !== 'xmlns'){\n\t\t\t\ta.uri = currentNSMap[prefix || '']\n\n\t\t\t\t//{console.log('###'+a.qName,domBuilder.locator.systemId+'',currentNSMap,a.uri)}\n\t\t\t}\n\t\t}\n\t}\n\tvar nsp = tagName.indexOf(':');\n\tif(nsp>0){\n\t\tprefix = el.prefix = tagName.slice(0,nsp);\n\t\tlocalName = el.localName = tagName.slice(nsp+1);\n\t}else{\n\t\tprefix = null;//important!!\n\t\tlocalName = el.localName = tagName;\n\t}\n\t//no prefix element has default namespace\n\tvar ns = el.uri = currentNSMap[prefix || ''];\n\tdomBuilder.startElement(ns,localName,tagName,el);\n\t//endPrefixMapping and startPrefixMapping have not any help for dom builder\n\t//localNSMap = null\n\tif(el.closed){\n\t\tdomBuilder.endElement(ns,localName,tagName);\n\t\tif(localNSMap){\n\t\t\tfor (prefix in localNSMap) {\n\t\t\t\tif (Object.prototype.hasOwnProperty.call(localNSMap, prefix)) {\n\t\t\t\t\tdomBuilder.endPrefixMapping(prefix);\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}else{\n\t\tel.currentNSMap = currentNSMap;\n\t\tel.localNSMap = localNSMap;\n\t\t//parseStack.push(el);\n\t\treturn true;\n\t}\n}\nfunction parseHtmlSpecialContent(source,elStartEnd,tagName,entityReplacer,domBuilder){\n\tif(/^(?:script|textarea)$/i.test(tagName)){\n\t\tvar elEndStart = source.indexOf('',elStartEnd);\n\t\tvar text = source.substring(elStartEnd+1,elEndStart);\n\t\tif(/[&<]/.test(text)){\n\t\t\tif(/^script$/i.test(tagName)){\n\t\t\t\t//if(!/\\]\\]>/.test(text)){\n\t\t\t\t\t//lexHandler.startCDATA();\n\t\t\t\t\tdomBuilder.characters(text,0,text.length);\n\t\t\t\t\t//lexHandler.endCDATA();\n\t\t\t\t\treturn elEndStart;\n\t\t\t\t//}\n\t\t\t}//}else{//text area\n\t\t\t\ttext = text.replace(/&#?\\w+;/g,entityReplacer);\n\t\t\t\tdomBuilder.characters(text,0,text.length);\n\t\t\t\treturn elEndStart;\n\t\t\t//}\n\n\t\t}\n\t}\n\treturn elStartEnd+1;\n}\nfunction fixSelfClosed(source,elStartEnd,tagName,closeMap){\n\t//if(tagName in closeMap){\n\tvar pos = closeMap[tagName];\n\tif(pos == null){\n\t\t//console.log(tagName)\n\t\tpos = source.lastIndexOf('')\n\t\tif(pos',start+4);\n\t\t\t//append comment source.substring(4,end)//';\n if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {\n // ignore frames with unrecognized character encodings\n return;\n } // parsing fields [ID3v2.4.0 section 4.14.]\n\n mimeTypeEndIndex = typedArrayIndexOf(frame.data, 0, i);\n if (mimeTypeEndIndex < 0) {\n // malformed frame\n return;\n } // parsing Mime type field (terminated with \\0)\n\n frame.mimeType = parseIso88591$1(frame.data, i, mimeTypeEndIndex);\n i = mimeTypeEndIndex + 1; // parsing 1-byte Picture Type field\n\n frame.pictureType = frame.data[i];\n i++;\n descriptionEndIndex = typedArrayIndexOf(frame.data, 0, i);\n if (descriptionEndIndex < 0) {\n // malformed frame\n return;\n } // parsing Description field (terminated with \\0)\n\n frame.description = parseUtf8(frame.data, i, descriptionEndIndex);\n i = descriptionEndIndex + 1;\n if (frame.mimeType === LINK_MIME_TYPE) {\n // parsing Picture Data field as URL (always represented as ISO-8859-1 [ID3v2.4.0 section 4.])\n frame.url = parseIso88591$1(frame.data, i, frame.data.length);\n } else {\n // parsing Picture Data field as binary data\n frame.pictureData = frame.data.subarray(i, frame.data.length);\n }\n },\n 'T*': function (frame) {\n if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {\n // ignore frames with unrecognized character encodings\n return;\n } // parse text field, do not include null terminator in the frame value\n // frames that allow different types of encoding contain terminated text [ID3v2.4.0 section 4.]\n\n frame.value = parseUtf8(frame.data, 1, frame.data.length).replace(/\\0*$/, ''); // text information frames supports multiple strings, stored as a terminator separated list [ID3v2.4.0 section 4.2.]\n\n frame.values = frame.value.split('\\0');\n },\n 'TXXX': function (frame) {\n var descriptionEndIndex;\n if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {\n // ignore frames with unrecognized character encodings\n return;\n }\n descriptionEndIndex = typedArrayIndexOf(frame.data, 0, 1);\n if (descriptionEndIndex === -1) {\n return;\n } // parse the text fields\n\n frame.description = parseUtf8(frame.data, 1, descriptionEndIndex); // do not include the null terminator in the tag value\n // frames that allow different types of encoding contain terminated text\n // [ID3v2.4.0 section 4.]\n\n frame.value = parseUtf8(frame.data, descriptionEndIndex + 1, frame.data.length).replace(/\\0*$/, '');\n frame.data = frame.value;\n },\n 'W*': function (frame) {\n // parse URL field; URL fields are always represented as ISO-8859-1 [ID3v2.4.0 section 4.]\n // if the value is followed by a string termination all the following information should be ignored [ID3v2.4.0 section 4.3]\n frame.url = parseIso88591$1(frame.data, 0, frame.data.length).replace(/\\0.*$/, '');\n },\n 'WXXX': function (frame) {\n var descriptionEndIndex;\n if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {\n // ignore frames with unrecognized character encodings\n return;\n }\n descriptionEndIndex = typedArrayIndexOf(frame.data, 0, 1);\n if (descriptionEndIndex === -1) {\n return;\n } // parse the description and URL fields\n\n frame.description = parseUtf8(frame.data, 1, descriptionEndIndex); // URL fields are always represented as ISO-8859-1 [ID3v2.4.0 section 4.]\n // if the value is followed by a string termination all the following information\n // should be ignored [ID3v2.4.0 section 4.3]\n\n frame.url = parseIso88591$1(frame.data, descriptionEndIndex + 1, frame.data.length).replace(/\\0.*$/, '');\n },\n 'PRIV': function (frame) {\n var i;\n for (i = 0; i < frame.data.length; i++) {\n if (frame.data[i] === 0) {\n // parse the description and URL fields\n frame.owner = parseIso88591$1(frame.data, 0, i);\n break;\n }\n }\n frame.privateData = frame.data.subarray(i + 1);\n frame.data = frame.privateData;\n }\n };\n var parseId3Frames$1 = function (data) {\n var frameSize,\n frameHeader,\n frameStart = 10,\n tagSize = 0,\n frames = []; // If we don't have enough data for a header, 10 bytes, \n // or 'ID3' in the first 3 bytes this is not a valid ID3 tag.\n\n if (data.length < 10 || data[0] !== 'I'.charCodeAt(0) || data[1] !== 'D'.charCodeAt(0) || data[2] !== '3'.charCodeAt(0)) {\n return;\n } // the frame size is transmitted as a 28-bit integer in the\n // last four bytes of the ID3 header.\n // The most significant bit of each byte is dropped and the\n // results concatenated to recover the actual value.\n\n tagSize = parseSyncSafeInteger$1(data.subarray(6, 10)); // ID3 reports the tag size excluding the header but it's more\n // convenient for our comparisons to include it\n\n tagSize += 10; // check bit 6 of byte 5 for the extended header flag.\n\n var hasExtendedHeader = data[5] & 0x40;\n if (hasExtendedHeader) {\n // advance the frame start past the extended header\n frameStart += 4; // header size field\n\n frameStart += parseSyncSafeInteger$1(data.subarray(10, 14));\n tagSize -= parseSyncSafeInteger$1(data.subarray(16, 20)); // clip any padding off the end\n } // parse one or more ID3 frames\n // http://id3.org/id3v2.3.0#ID3v2_frame_overview\n\n do {\n // determine the number of bytes in this frame\n frameSize = parseSyncSafeInteger$1(data.subarray(frameStart + 4, frameStart + 8));\n if (frameSize < 1) {\n break;\n }\n frameHeader = String.fromCharCode(data[frameStart], data[frameStart + 1], data[frameStart + 2], data[frameStart + 3]);\n var frame = {\n id: frameHeader,\n data: data.subarray(frameStart + 10, frameStart + frameSize + 10)\n };\n frame.key = frame.id; // parse frame values\n\n if (frameParsers[frame.id]) {\n // use frame specific parser\n frameParsers[frame.id](frame);\n } else if (frame.id[0] === 'T') {\n // use text frame generic parser\n frameParsers['T*'](frame);\n } else if (frame.id[0] === 'W') {\n // use URL link frame generic parser\n frameParsers['W*'](frame);\n }\n frames.push(frame);\n frameStart += 10; // advance past the frame header\n\n frameStart += frameSize; // advance past the frame body\n } while (frameStart < tagSize);\n return frames;\n };\n var parseId3 = {\n parseId3Frames: parseId3Frames$1,\n parseSyncSafeInteger: parseSyncSafeInteger$1,\n frameParsers: frameParsers\n };\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * Accepts program elementary stream (PES) data events and parses out\n * ID3 metadata from them, if present.\n * @see http://id3.org/id3v2.3.0\n */\n\n var Stream$5 = stream,\n StreamTypes$3 = streamTypes,\n id3 = parseId3,\n MetadataStream;\n MetadataStream = function (options) {\n var settings = {\n // the bytes of the program-level descriptor field in MP2T\n // see ISO/IEC 13818-1:2013 (E), section 2.6 \"Program and\n // program element descriptors\"\n descriptor: options && options.descriptor\n },\n // the total size in bytes of the ID3 tag being parsed\n tagSize = 0,\n // tag data that is not complete enough to be parsed\n buffer = [],\n // the total number of bytes currently in the buffer\n bufferSize = 0,\n i;\n MetadataStream.prototype.init.call(this); // calculate the text track in-band metadata track dispatch type\n // https://html.spec.whatwg.org/multipage/embedded-content.html#steps-to-expose-a-media-resource-specific-text-track\n\n this.dispatchType = StreamTypes$3.METADATA_STREAM_TYPE.toString(16);\n if (settings.descriptor) {\n for (i = 0; i < settings.descriptor.length; i++) {\n this.dispatchType += ('00' + settings.descriptor[i].toString(16)).slice(-2);\n }\n }\n this.push = function (chunk) {\n var tag, frameStart, frameSize, frame, i, frameHeader;\n if (chunk.type !== 'timed-metadata') {\n return;\n } // if data_alignment_indicator is set in the PES header,\n // we must have the start of a new ID3 tag. Assume anything\n // remaining in the buffer was malformed and throw it out\n\n if (chunk.dataAlignmentIndicator) {\n bufferSize = 0;\n buffer.length = 0;\n } // ignore events that don't look like ID3 data\n\n if (buffer.length === 0 && (chunk.data.length < 10 || chunk.data[0] !== 'I'.charCodeAt(0) || chunk.data[1] !== 'D'.charCodeAt(0) || chunk.data[2] !== '3'.charCodeAt(0))) {\n this.trigger('log', {\n level: 'warn',\n message: 'Skipping unrecognized metadata packet'\n });\n return;\n } // add this chunk to the data we've collected so far\n\n buffer.push(chunk);\n bufferSize += chunk.data.byteLength; // grab the size of the entire frame from the ID3 header\n\n if (buffer.length === 1) {\n // the frame size is transmitted as a 28-bit integer in the\n // last four bytes of the ID3 header.\n // The most significant bit of each byte is dropped and the\n // results concatenated to recover the actual value.\n tagSize = id3.parseSyncSafeInteger(chunk.data.subarray(6, 10)); // ID3 reports the tag size excluding the header but it's more\n // convenient for our comparisons to include it\n\n tagSize += 10;\n } // if the entire frame has not arrived, wait for more data\n\n if (bufferSize < tagSize) {\n return;\n } // collect the entire frame so it can be parsed\n\n tag = {\n data: new Uint8Array(tagSize),\n frames: [],\n pts: buffer[0].pts,\n dts: buffer[0].dts\n };\n for (i = 0; i < tagSize;) {\n tag.data.set(buffer[0].data.subarray(0, tagSize - i), i);\n i += buffer[0].data.byteLength;\n bufferSize -= buffer[0].data.byteLength;\n buffer.shift();\n } // find the start of the first frame and the end of the tag\n\n frameStart = 10;\n if (tag.data[5] & 0x40) {\n // advance the frame start past the extended header\n frameStart += 4; // header size field\n\n frameStart += id3.parseSyncSafeInteger(tag.data.subarray(10, 14)); // clip any padding off the end\n\n tagSize -= id3.parseSyncSafeInteger(tag.data.subarray(16, 20));\n } // parse one or more ID3 frames\n // http://id3.org/id3v2.3.0#ID3v2_frame_overview\n\n do {\n // determine the number of bytes in this frame\n frameSize = id3.parseSyncSafeInteger(tag.data.subarray(frameStart + 4, frameStart + 8));\n if (frameSize < 1) {\n this.trigger('log', {\n level: 'warn',\n message: 'Malformed ID3 frame encountered. Skipping remaining metadata parsing.'\n }); // If the frame is malformed, don't parse any further frames but allow previous valid parsed frames\n // to be sent along.\n\n break;\n }\n frameHeader = String.fromCharCode(tag.data[frameStart], tag.data[frameStart + 1], tag.data[frameStart + 2], tag.data[frameStart + 3]);\n frame = {\n id: frameHeader,\n data: tag.data.subarray(frameStart + 10, frameStart + frameSize + 10)\n };\n frame.key = frame.id; // parse frame values\n\n if (id3.frameParsers[frame.id]) {\n // use frame specific parser\n id3.frameParsers[frame.id](frame);\n } else if (frame.id[0] === 'T') {\n // use text frame generic parser\n id3.frameParsers['T*'](frame);\n } else if (frame.id[0] === 'W') {\n // use URL link frame generic parser\n id3.frameParsers['W*'](frame);\n } // handle the special PRIV frame used to indicate the start\n // time for raw AAC data\n\n if (frame.owner === 'com.apple.streaming.transportStreamTimestamp') {\n var d = frame.data,\n size = (d[3] & 0x01) << 30 | d[4] << 22 | d[5] << 14 | d[6] << 6 | d[7] >>> 2;\n size *= 4;\n size += d[7] & 0x03;\n frame.timeStamp = size; // in raw AAC, all subsequent data will be timestamped based\n // on the value of this frame\n // we couldn't have known the appropriate pts and dts before\n // parsing this ID3 tag so set those values now\n\n if (tag.pts === undefined && tag.dts === undefined) {\n tag.pts = frame.timeStamp;\n tag.dts = frame.timeStamp;\n }\n this.trigger('timestamp', frame);\n }\n tag.frames.push(frame);\n frameStart += 10; // advance past the frame header\n\n frameStart += frameSize; // advance past the frame body\n } while (frameStart < tagSize);\n this.trigger('data', tag);\n };\n };\n MetadataStream.prototype = new Stream$5();\n var metadataStream = MetadataStream;\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * A stream-based mp2t to mp4 converter. This utility can be used to\n * deliver mp4s to a SourceBuffer on platforms that support native\n * Media Source Extensions.\n */\n\n var Stream$4 = stream,\n CaptionStream$1 = captionStream,\n StreamTypes$2 = streamTypes,\n TimestampRolloverStream = timestampRolloverStream.TimestampRolloverStream; // object types\n\n var TransportPacketStream, TransportParseStream, ElementaryStream; // constants\n\n var MP2T_PACKET_LENGTH$1 = 188,\n // bytes\n SYNC_BYTE$1 = 0x47;\n /**\n * Splits an incoming stream of binary data into MPEG-2 Transport\n * Stream packets.\n */\n\n TransportPacketStream = function () {\n var buffer = new Uint8Array(MP2T_PACKET_LENGTH$1),\n bytesInBuffer = 0;\n TransportPacketStream.prototype.init.call(this); // Deliver new bytes to the stream.\n\n /**\n * Split a stream of data into M2TS packets\n **/\n\n this.push = function (bytes) {\n var startIndex = 0,\n endIndex = MP2T_PACKET_LENGTH$1,\n everything; // If there are bytes remaining from the last segment, prepend them to the\n // bytes that were pushed in\n\n if (bytesInBuffer) {\n everything = new Uint8Array(bytes.byteLength + bytesInBuffer);\n everything.set(buffer.subarray(0, bytesInBuffer));\n everything.set(bytes, bytesInBuffer);\n bytesInBuffer = 0;\n } else {\n everything = bytes;\n } // While we have enough data for a packet\n\n while (endIndex < everything.byteLength) {\n // Look for a pair of start and end sync bytes in the data..\n if (everything[startIndex] === SYNC_BYTE$1 && everything[endIndex] === SYNC_BYTE$1) {\n // We found a packet so emit it and jump one whole packet forward in\n // the stream\n this.trigger('data', everything.subarray(startIndex, endIndex));\n startIndex += MP2T_PACKET_LENGTH$1;\n endIndex += MP2T_PACKET_LENGTH$1;\n continue;\n } // If we get here, we have somehow become de-synchronized and we need to step\n // forward one byte at a time until we find a pair of sync bytes that denote\n // a packet\n\n startIndex++;\n endIndex++;\n } // If there was some data left over at the end of the segment that couldn't\n // possibly be a whole packet, keep it because it might be the start of a packet\n // that continues in the next segment\n\n if (startIndex < everything.byteLength) {\n buffer.set(everything.subarray(startIndex), 0);\n bytesInBuffer = everything.byteLength - startIndex;\n }\n };\n /**\n * Passes identified M2TS packets to the TransportParseStream to be parsed\n **/\n\n this.flush = function () {\n // If the buffer contains a whole packet when we are being flushed, emit it\n // and empty the buffer. Otherwise hold onto the data because it may be\n // important for decoding the next segment\n if (bytesInBuffer === MP2T_PACKET_LENGTH$1 && buffer[0] === SYNC_BYTE$1) {\n this.trigger('data', buffer);\n bytesInBuffer = 0;\n }\n this.trigger('done');\n };\n this.endTimeline = function () {\n this.flush();\n this.trigger('endedtimeline');\n };\n this.reset = function () {\n bytesInBuffer = 0;\n this.trigger('reset');\n };\n };\n TransportPacketStream.prototype = new Stream$4();\n /**\n * Accepts an MP2T TransportPacketStream and emits data events with parsed\n * forms of the individual transport stream packets.\n */\n\n TransportParseStream = function () {\n var parsePsi, parsePat, parsePmt, self;\n TransportParseStream.prototype.init.call(this);\n self = this;\n this.packetsWaitingForPmt = [];\n this.programMapTable = undefined;\n parsePsi = function (payload, psi) {\n var offset = 0; // PSI packets may be split into multiple sections and those\n // sections may be split into multiple packets. If a PSI\n // section starts in this packet, the payload_unit_start_indicator\n // will be true and the first byte of the payload will indicate\n // the offset from the current position to the start of the\n // section.\n\n if (psi.payloadUnitStartIndicator) {\n offset += payload[offset] + 1;\n }\n if (psi.type === 'pat') {\n parsePat(payload.subarray(offset), psi);\n } else {\n parsePmt(payload.subarray(offset), psi);\n }\n };\n parsePat = function (payload, pat) {\n pat.section_number = payload[7]; // eslint-disable-line camelcase\n\n pat.last_section_number = payload[8]; // eslint-disable-line camelcase\n // skip the PSI header and parse the first PMT entry\n\n self.pmtPid = (payload[10] & 0x1F) << 8 | payload[11];\n pat.pmtPid = self.pmtPid;\n };\n /**\n * Parse out the relevant fields of a Program Map Table (PMT).\n * @param payload {Uint8Array} the PMT-specific portion of an MP2T\n * packet. The first byte in this array should be the table_id\n * field.\n * @param pmt {object} the object that should be decorated with\n * fields parsed from the PMT.\n */\n\n parsePmt = function (payload, pmt) {\n var sectionLength, tableEnd, programInfoLength, offset; // PMTs can be sent ahead of the time when they should actually\n // take effect. We don't believe this should ever be the case\n // for HLS but we'll ignore \"forward\" PMT declarations if we see\n // them. Future PMT declarations have the current_next_indicator\n // set to zero.\n\n if (!(payload[5] & 0x01)) {\n return;\n } // overwrite any existing program map table\n\n self.programMapTable = {\n video: null,\n audio: null,\n 'timed-metadata': {}\n }; // the mapping table ends at the end of the current section\n\n sectionLength = (payload[1] & 0x0f) << 8 | payload[2];\n tableEnd = 3 + sectionLength - 4; // to determine where the table is, we have to figure out how\n // long the program info descriptors are\n\n programInfoLength = (payload[10] & 0x0f) << 8 | payload[11]; // advance the offset to the first entry in the mapping table\n\n offset = 12 + programInfoLength;\n while (offset < tableEnd) {\n var streamType = payload[offset];\n var pid = (payload[offset + 1] & 0x1F) << 8 | payload[offset + 2]; // only map a single elementary_pid for audio and video stream types\n // TODO: should this be done for metadata too? for now maintain behavior of\n // multiple metadata streams\n\n if (streamType === StreamTypes$2.H264_STREAM_TYPE && self.programMapTable.video === null) {\n self.programMapTable.video = pid;\n } else if (streamType === StreamTypes$2.ADTS_STREAM_TYPE && self.programMapTable.audio === null) {\n self.programMapTable.audio = pid;\n } else if (streamType === StreamTypes$2.METADATA_STREAM_TYPE) {\n // map pid to stream type for metadata streams\n self.programMapTable['timed-metadata'][pid] = streamType;\n } // move to the next table entry\n // skip past the elementary stream descriptors, if present\n\n offset += ((payload[offset + 3] & 0x0F) << 8 | payload[offset + 4]) + 5;\n } // record the map on the packet as well\n\n pmt.programMapTable = self.programMapTable;\n };\n /**\n * Deliver a new MP2T packet to the next stream in the pipeline.\n */\n\n this.push = function (packet) {\n var result = {},\n offset = 4;\n result.payloadUnitStartIndicator = !!(packet[1] & 0x40); // pid is a 13-bit field starting at the last bit of packet[1]\n\n result.pid = packet[1] & 0x1f;\n result.pid <<= 8;\n result.pid |= packet[2]; // if an adaption field is present, its length is specified by the\n // fifth byte of the TS packet header. The adaptation field is\n // used to add stuffing to PES packets that don't fill a complete\n // TS packet, and to specify some forms of timing and control data\n // that we do not currently use.\n\n if ((packet[3] & 0x30) >>> 4 > 0x01) {\n offset += packet[offset] + 1;\n } // parse the rest of the packet based on the type\n\n if (result.pid === 0) {\n result.type = 'pat';\n parsePsi(packet.subarray(offset), result);\n this.trigger('data', result);\n } else if (result.pid === this.pmtPid) {\n result.type = 'pmt';\n parsePsi(packet.subarray(offset), result);\n this.trigger('data', result); // if there are any packets waiting for a PMT to be found, process them now\n\n while (this.packetsWaitingForPmt.length) {\n this.processPes_.apply(this, this.packetsWaitingForPmt.shift());\n }\n } else if (this.programMapTable === undefined) {\n // When we have not seen a PMT yet, defer further processing of\n // PES packets until one has been parsed\n this.packetsWaitingForPmt.push([packet, offset, result]);\n } else {\n this.processPes_(packet, offset, result);\n }\n };\n this.processPes_ = function (packet, offset, result) {\n // set the appropriate stream type\n if (result.pid === this.programMapTable.video) {\n result.streamType = StreamTypes$2.H264_STREAM_TYPE;\n } else if (result.pid === this.programMapTable.audio) {\n result.streamType = StreamTypes$2.ADTS_STREAM_TYPE;\n } else {\n // if not video or audio, it is timed-metadata or unknown\n // if unknown, streamType will be undefined\n result.streamType = this.programMapTable['timed-metadata'][result.pid];\n }\n result.type = 'pes';\n result.data = packet.subarray(offset);\n this.trigger('data', result);\n };\n };\n TransportParseStream.prototype = new Stream$4();\n TransportParseStream.STREAM_TYPES = {\n h264: 0x1b,\n adts: 0x0f\n };\n /**\n * Reconsistutes program elementary stream (PES) packets from parsed\n * transport stream packets. That is, if you pipe an\n * mp2t.TransportParseStream into a mp2t.ElementaryStream, the output\n * events will be events which capture the bytes for individual PES\n * packets plus relevant metadata that has been extracted from the\n * container.\n */\n\n ElementaryStream = function () {\n var self = this,\n segmentHadPmt = false,\n // PES packet fragments\n video = {\n data: [],\n size: 0\n },\n audio = {\n data: [],\n size: 0\n },\n timedMetadata = {\n data: [],\n size: 0\n },\n programMapTable,\n parsePes = function (payload, pes) {\n var ptsDtsFlags;\n const startPrefix = payload[0] << 16 | payload[1] << 8 | payload[2]; // default to an empty array\n\n pes.data = new Uint8Array(); // In certain live streams, the start of a TS fragment has ts packets\n // that are frame data that is continuing from the previous fragment. This\n // is to check that the pes data is the start of a new pes payload\n\n if (startPrefix !== 1) {\n return;\n } // get the packet length, this will be 0 for video\n\n pes.packetLength = 6 + (payload[4] << 8 | payload[5]); // find out if this packets starts a new keyframe\n\n pes.dataAlignmentIndicator = (payload[6] & 0x04) !== 0; // PES packets may be annotated with a PTS value, or a PTS value\n // and a DTS value. Determine what combination of values is\n // available to work with.\n\n ptsDtsFlags = payload[7]; // PTS and DTS are normally stored as a 33-bit number. Javascript\n // performs all bitwise operations on 32-bit integers but javascript\n // supports a much greater range (52-bits) of integer using standard\n // mathematical operations.\n // We construct a 31-bit value using bitwise operators over the 31\n // most significant bits and then multiply by 4 (equal to a left-shift\n // of 2) before we add the final 2 least significant bits of the\n // timestamp (equal to an OR.)\n\n if (ptsDtsFlags & 0xC0) {\n // the PTS and DTS are not written out directly. For information\n // on how they are encoded, see\n // http://dvd.sourceforge.net/dvdinfo/pes-hdr.html\n pes.pts = (payload[9] & 0x0E) << 27 | (payload[10] & 0xFF) << 20 | (payload[11] & 0xFE) << 12 | (payload[12] & 0xFF) << 5 | (payload[13] & 0xFE) >>> 3;\n pes.pts *= 4; // Left shift by 2\n\n pes.pts += (payload[13] & 0x06) >>> 1; // OR by the two LSBs\n\n pes.dts = pes.pts;\n if (ptsDtsFlags & 0x40) {\n pes.dts = (payload[14] & 0x0E) << 27 | (payload[15] & 0xFF) << 20 | (payload[16] & 0xFE) << 12 | (payload[17] & 0xFF) << 5 | (payload[18] & 0xFE) >>> 3;\n pes.dts *= 4; // Left shift by 2\n\n pes.dts += (payload[18] & 0x06) >>> 1; // OR by the two LSBs\n }\n } // the data section starts immediately after the PES header.\n // pes_header_data_length specifies the number of header bytes\n // that follow the last byte of the field.\n\n pes.data = payload.subarray(9 + payload[8]);\n },\n /**\n * Pass completely parsed PES packets to the next stream in the pipeline\n **/\n flushStream = function (stream, type, forceFlush) {\n var packetData = new Uint8Array(stream.size),\n event = {\n type: type\n },\n i = 0,\n offset = 0,\n packetFlushable = false,\n fragment; // do nothing if there is not enough buffered data for a complete\n // PES header\n\n if (!stream.data.length || stream.size < 9) {\n return;\n }\n event.trackId = stream.data[0].pid; // reassemble the packet\n\n for (i = 0; i < stream.data.length; i++) {\n fragment = stream.data[i];\n packetData.set(fragment.data, offset);\n offset += fragment.data.byteLength;\n } // parse assembled packet's PES header\n\n parsePes(packetData, event); // non-video PES packets MUST have a non-zero PES_packet_length\n // check that there is enough stream data to fill the packet\n\n packetFlushable = type === 'video' || event.packetLength <= stream.size; // flush pending packets if the conditions are right\n\n if (forceFlush || packetFlushable) {\n stream.size = 0;\n stream.data.length = 0;\n } // only emit packets that are complete. this is to avoid assembling\n // incomplete PES packets due to poor segmentation\n\n if (packetFlushable) {\n self.trigger('data', event);\n }\n };\n ElementaryStream.prototype.init.call(this);\n /**\n * Identifies M2TS packet types and parses PES packets using metadata\n * parsed from the PMT\n **/\n\n this.push = function (data) {\n ({\n pat: function () {// we have to wait for the PMT to arrive as well before we\n // have any meaningful metadata\n },\n pes: function () {\n var stream, streamType;\n switch (data.streamType) {\n case StreamTypes$2.H264_STREAM_TYPE:\n stream = video;\n streamType = 'video';\n break;\n case StreamTypes$2.ADTS_STREAM_TYPE:\n stream = audio;\n streamType = 'audio';\n break;\n case StreamTypes$2.METADATA_STREAM_TYPE:\n stream = timedMetadata;\n streamType = 'timed-metadata';\n break;\n default:\n // ignore unknown stream types\n return;\n } // if a new packet is starting, we can flush the completed\n // packet\n\n if (data.payloadUnitStartIndicator) {\n flushStream(stream, streamType, true);\n } // buffer this fragment until we are sure we've received the\n // complete payload\n\n stream.data.push(data);\n stream.size += data.data.byteLength;\n },\n pmt: function () {\n var event = {\n type: 'metadata',\n tracks: []\n };\n programMapTable = data.programMapTable; // translate audio and video streams to tracks\n\n if (programMapTable.video !== null) {\n event.tracks.push({\n timelineStartInfo: {\n baseMediaDecodeTime: 0\n },\n id: +programMapTable.video,\n codec: 'avc',\n type: 'video'\n });\n }\n if (programMapTable.audio !== null) {\n event.tracks.push({\n timelineStartInfo: {\n baseMediaDecodeTime: 0\n },\n id: +programMapTable.audio,\n codec: 'adts',\n type: 'audio'\n });\n }\n segmentHadPmt = true;\n self.trigger('data', event);\n }\n })[data.type]();\n };\n this.reset = function () {\n video.size = 0;\n video.data.length = 0;\n audio.size = 0;\n audio.data.length = 0;\n this.trigger('reset');\n };\n /**\n * Flush any remaining input. Video PES packets may be of variable\n * length. Normally, the start of a new video packet can trigger the\n * finalization of the previous packet. That is not possible if no\n * more video is forthcoming, however. In that case, some other\n * mechanism (like the end of the file) has to be employed. When it is\n * clear that no additional data is forthcoming, calling this method\n * will flush the buffered packets.\n */\n\n this.flushStreams_ = function () {\n // !!THIS ORDER IS IMPORTANT!!\n // video first then audio\n flushStream(video, 'video');\n flushStream(audio, 'audio');\n flushStream(timedMetadata, 'timed-metadata');\n };\n this.flush = function () {\n // if on flush we haven't had a pmt emitted\n // and we have a pmt to emit. emit the pmt\n // so that we trigger a trackinfo downstream.\n if (!segmentHadPmt && programMapTable) {\n var pmt = {\n type: 'metadata',\n tracks: []\n }; // translate audio and video streams to tracks\n\n if (programMapTable.video !== null) {\n pmt.tracks.push({\n timelineStartInfo: {\n baseMediaDecodeTime: 0\n },\n id: +programMapTable.video,\n codec: 'avc',\n type: 'video'\n });\n }\n if (programMapTable.audio !== null) {\n pmt.tracks.push({\n timelineStartInfo: {\n baseMediaDecodeTime: 0\n },\n id: +programMapTable.audio,\n codec: 'adts',\n type: 'audio'\n });\n }\n self.trigger('data', pmt);\n }\n segmentHadPmt = false;\n this.flushStreams_();\n this.trigger('done');\n };\n };\n ElementaryStream.prototype = new Stream$4();\n var m2ts$1 = {\n PAT_PID: 0x0000,\n MP2T_PACKET_LENGTH: MP2T_PACKET_LENGTH$1,\n TransportPacketStream: TransportPacketStream,\n TransportParseStream: TransportParseStream,\n ElementaryStream: ElementaryStream,\n TimestampRolloverStream: TimestampRolloverStream,\n CaptionStream: CaptionStream$1.CaptionStream,\n Cea608Stream: CaptionStream$1.Cea608Stream,\n Cea708Stream: CaptionStream$1.Cea708Stream,\n MetadataStream: metadataStream\n };\n for (var type in StreamTypes$2) {\n if (StreamTypes$2.hasOwnProperty(type)) {\n m2ts$1[type] = StreamTypes$2[type];\n }\n }\n var m2ts_1 = m2ts$1;\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n */\n\n var Stream$3 = stream;\n var ONE_SECOND_IN_TS$2 = clock$2.ONE_SECOND_IN_TS;\n var AdtsStream$1;\n var ADTS_SAMPLING_FREQUENCIES$1 = [96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 7350];\n /*\n * Accepts a ElementaryStream and emits data events with parsed\n * AAC Audio Frames of the individual packets. Input audio in ADTS\n * format is unpacked and re-emitted as AAC frames.\n *\n * @see http://wiki.multimedia.cx/index.php?title=ADTS\n * @see http://wiki.multimedia.cx/?title=Understanding_AAC\n */\n\n AdtsStream$1 = function (handlePartialSegments) {\n var buffer,\n frameNum = 0;\n AdtsStream$1.prototype.init.call(this);\n this.skipWarn_ = function (start, end) {\n this.trigger('log', {\n level: 'warn',\n message: `adts skiping bytes ${start} to ${end} in frame ${frameNum} outside syncword`\n });\n };\n this.push = function (packet) {\n var i = 0,\n frameLength,\n protectionSkipBytes,\n oldBuffer,\n sampleCount,\n adtsFrameDuration;\n if (!handlePartialSegments) {\n frameNum = 0;\n }\n if (packet.type !== 'audio') {\n // ignore non-audio data\n return;\n } // Prepend any data in the buffer to the input data so that we can parse\n // aac frames the cross a PES packet boundary\n\n if (buffer && buffer.length) {\n oldBuffer = buffer;\n buffer = new Uint8Array(oldBuffer.byteLength + packet.data.byteLength);\n buffer.set(oldBuffer);\n buffer.set(packet.data, oldBuffer.byteLength);\n } else {\n buffer = packet.data;\n } // unpack any ADTS frames which have been fully received\n // for details on the ADTS header, see http://wiki.multimedia.cx/index.php?title=ADTS\n\n var skip; // We use i + 7 here because we want to be able to parse the entire header.\n // If we don't have enough bytes to do that, then we definitely won't have a full frame.\n\n while (i + 7 < buffer.length) {\n // Look for the start of an ADTS header..\n if (buffer[i] !== 0xFF || (buffer[i + 1] & 0xF6) !== 0xF0) {\n if (typeof skip !== 'number') {\n skip = i;\n } // If a valid header was not found, jump one forward and attempt to\n // find a valid ADTS header starting at the next byte\n\n i++;\n continue;\n }\n if (typeof skip === 'number') {\n this.skipWarn_(skip, i);\n skip = null;\n } // The protection skip bit tells us if we have 2 bytes of CRC data at the\n // end of the ADTS header\n\n protectionSkipBytes = (~buffer[i + 1] & 0x01) * 2; // Frame length is a 13 bit integer starting 16 bits from the\n // end of the sync sequence\n // NOTE: frame length includes the size of the header\n\n frameLength = (buffer[i + 3] & 0x03) << 11 | buffer[i + 4] << 3 | (buffer[i + 5] & 0xe0) >> 5;\n sampleCount = ((buffer[i + 6] & 0x03) + 1) * 1024;\n adtsFrameDuration = sampleCount * ONE_SECOND_IN_TS$2 / ADTS_SAMPLING_FREQUENCIES$1[(buffer[i + 2] & 0x3c) >>> 2]; // If we don't have enough data to actually finish this ADTS frame,\n // then we have to wait for more data\n\n if (buffer.byteLength - i < frameLength) {\n break;\n } // Otherwise, deliver the complete AAC frame\n\n this.trigger('data', {\n pts: packet.pts + frameNum * adtsFrameDuration,\n dts: packet.dts + frameNum * adtsFrameDuration,\n sampleCount: sampleCount,\n audioobjecttype: (buffer[i + 2] >>> 6 & 0x03) + 1,\n channelcount: (buffer[i + 2] & 1) << 2 | (buffer[i + 3] & 0xc0) >>> 6,\n samplerate: ADTS_SAMPLING_FREQUENCIES$1[(buffer[i + 2] & 0x3c) >>> 2],\n samplingfrequencyindex: (buffer[i + 2] & 0x3c) >>> 2,\n // assume ISO/IEC 14496-12 AudioSampleEntry default of 16\n samplesize: 16,\n // data is the frame without it's header\n data: buffer.subarray(i + 7 + protectionSkipBytes, i + frameLength)\n });\n frameNum++;\n i += frameLength;\n }\n if (typeof skip === 'number') {\n this.skipWarn_(skip, i);\n skip = null;\n } // remove processed bytes from the buffer.\n\n buffer = buffer.subarray(i);\n };\n this.flush = function () {\n frameNum = 0;\n this.trigger('done');\n };\n this.reset = function () {\n buffer = void 0;\n this.trigger('reset');\n };\n this.endTimeline = function () {\n buffer = void 0;\n this.trigger('endedtimeline');\n };\n };\n AdtsStream$1.prototype = new Stream$3();\n var adts = AdtsStream$1;\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n */\n\n var ExpGolomb$1;\n /**\n * Parser for exponential Golomb codes, a variable-bitwidth number encoding\n * scheme used by h264.\n */\n\n ExpGolomb$1 = function (workingData) {\n var\n // the number of bytes left to examine in workingData\n workingBytesAvailable = workingData.byteLength,\n // the current word being examined\n workingWord = 0,\n // :uint\n // the number of bits left to examine in the current word\n workingBitsAvailable = 0; // :uint;\n // ():uint\n\n this.length = function () {\n return 8 * workingBytesAvailable;\n }; // ():uint\n\n this.bitsAvailable = function () {\n return 8 * workingBytesAvailable + workingBitsAvailable;\n }; // ():void\n\n this.loadWord = function () {\n var position = workingData.byteLength - workingBytesAvailable,\n workingBytes = new Uint8Array(4),\n availableBytes = Math.min(4, workingBytesAvailable);\n if (availableBytes === 0) {\n throw new Error('no bytes available');\n }\n workingBytes.set(workingData.subarray(position, position + availableBytes));\n workingWord = new DataView(workingBytes.buffer).getUint32(0); // track the amount of workingData that has been processed\n\n workingBitsAvailable = availableBytes * 8;\n workingBytesAvailable -= availableBytes;\n }; // (count:int):void\n\n this.skipBits = function (count) {\n var skipBytes; // :int\n\n if (workingBitsAvailable > count) {\n workingWord <<= count;\n workingBitsAvailable -= count;\n } else {\n count -= workingBitsAvailable;\n skipBytes = Math.floor(count / 8);\n count -= skipBytes * 8;\n workingBytesAvailable -= skipBytes;\n this.loadWord();\n workingWord <<= count;\n workingBitsAvailable -= count;\n }\n }; // (size:int):uint\n\n this.readBits = function (size) {\n var bits = Math.min(workingBitsAvailable, size),\n // :uint\n valu = workingWord >>> 32 - bits; // :uint\n // if size > 31, handle error\n\n workingBitsAvailable -= bits;\n if (workingBitsAvailable > 0) {\n workingWord <<= bits;\n } else if (workingBytesAvailable > 0) {\n this.loadWord();\n }\n bits = size - bits;\n if (bits > 0) {\n return valu << bits | this.readBits(bits);\n }\n return valu;\n }; // ():uint\n\n this.skipLeadingZeros = function () {\n var leadingZeroCount; // :uint\n\n for (leadingZeroCount = 0; leadingZeroCount < workingBitsAvailable; ++leadingZeroCount) {\n if ((workingWord & 0x80000000 >>> leadingZeroCount) !== 0) {\n // the first bit of working word is 1\n workingWord <<= leadingZeroCount;\n workingBitsAvailable -= leadingZeroCount;\n return leadingZeroCount;\n }\n } // we exhausted workingWord and still have not found a 1\n\n this.loadWord();\n return leadingZeroCount + this.skipLeadingZeros();\n }; // ():void\n\n this.skipUnsignedExpGolomb = function () {\n this.skipBits(1 + this.skipLeadingZeros());\n }; // ():void\n\n this.skipExpGolomb = function () {\n this.skipBits(1 + this.skipLeadingZeros());\n }; // ():uint\n\n this.readUnsignedExpGolomb = function () {\n var clz = this.skipLeadingZeros(); // :uint\n\n return this.readBits(clz + 1) - 1;\n }; // ():int\n\n this.readExpGolomb = function () {\n var valu = this.readUnsignedExpGolomb(); // :int\n\n if (0x01 & valu) {\n // the number is odd if the low order bit is set\n return 1 + valu >>> 1; // add 1 to make it even, and divide by 2\n }\n\n return -1 * (valu >>> 1); // divide by two then make it negative\n }; // Some convenience functions\n // :Boolean\n\n this.readBoolean = function () {\n return this.readBits(1) === 1;\n }; // ():int\n\n this.readUnsignedByte = function () {\n return this.readBits(8);\n };\n this.loadWord();\n };\n var expGolomb = ExpGolomb$1;\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n */\n\n var Stream$2 = stream;\n var ExpGolomb = expGolomb;\n var H264Stream$1, NalByteStream;\n var PROFILES_WITH_OPTIONAL_SPS_DATA;\n /**\n * Accepts a NAL unit byte stream and unpacks the embedded NAL units.\n */\n\n NalByteStream = function () {\n var syncPoint = 0,\n i,\n buffer;\n NalByteStream.prototype.init.call(this);\n /*\n * Scans a byte stream and triggers a data event with the NAL units found.\n * @param {Object} data Event received from H264Stream\n * @param {Uint8Array} data.data The h264 byte stream to be scanned\n *\n * @see H264Stream.push\n */\n\n this.push = function (data) {\n var swapBuffer;\n if (!buffer) {\n buffer = data.data;\n } else {\n swapBuffer = new Uint8Array(buffer.byteLength + data.data.byteLength);\n swapBuffer.set(buffer);\n swapBuffer.set(data.data, buffer.byteLength);\n buffer = swapBuffer;\n }\n var len = buffer.byteLength; // Rec. ITU-T H.264, Annex B\n // scan for NAL unit boundaries\n // a match looks like this:\n // 0 0 1 .. NAL .. 0 0 1\n // ^ sync point ^ i\n // or this:\n // 0 0 1 .. NAL .. 0 0 0\n // ^ sync point ^ i\n // advance the sync point to a NAL start, if necessary\n\n for (; syncPoint < len - 3; syncPoint++) {\n if (buffer[syncPoint + 2] === 1) {\n // the sync point is properly aligned\n i = syncPoint + 5;\n break;\n }\n }\n while (i < len) {\n // look at the current byte to determine if we've hit the end of\n // a NAL unit boundary\n switch (buffer[i]) {\n case 0:\n // skip past non-sync sequences\n if (buffer[i - 1] !== 0) {\n i += 2;\n break;\n } else if (buffer[i - 2] !== 0) {\n i++;\n break;\n } // deliver the NAL unit if it isn't empty\n\n if (syncPoint + 3 !== i - 2) {\n this.trigger('data', buffer.subarray(syncPoint + 3, i - 2));\n } // drop trailing zeroes\n\n do {\n i++;\n } while (buffer[i] !== 1 && i < len);\n syncPoint = i - 2;\n i += 3;\n break;\n case 1:\n // skip past non-sync sequences\n if (buffer[i - 1] !== 0 || buffer[i - 2] !== 0) {\n i += 3;\n break;\n } // deliver the NAL unit\n\n this.trigger('data', buffer.subarray(syncPoint + 3, i - 2));\n syncPoint = i - 2;\n i += 3;\n break;\n default:\n // the current byte isn't a one or zero, so it cannot be part\n // of a sync sequence\n i += 3;\n break;\n }\n } // filter out the NAL units that were delivered\n\n buffer = buffer.subarray(syncPoint);\n i -= syncPoint;\n syncPoint = 0;\n };\n this.reset = function () {\n buffer = null;\n syncPoint = 0;\n this.trigger('reset');\n };\n this.flush = function () {\n // deliver the last buffered NAL unit\n if (buffer && buffer.byteLength > 3) {\n this.trigger('data', buffer.subarray(syncPoint + 3));\n } // reset the stream state\n\n buffer = null;\n syncPoint = 0;\n this.trigger('done');\n };\n this.endTimeline = function () {\n this.flush();\n this.trigger('endedtimeline');\n };\n };\n NalByteStream.prototype = new Stream$2(); // values of profile_idc that indicate additional fields are included in the SPS\n // see Recommendation ITU-T H.264 (4/2013),\n // 7.3.2.1.1 Sequence parameter set data syntax\n\n PROFILES_WITH_OPTIONAL_SPS_DATA = {\n 100: true,\n 110: true,\n 122: true,\n 244: true,\n 44: true,\n 83: true,\n 86: true,\n 118: true,\n 128: true,\n // TODO: the three profiles below don't\n // appear to have sps data in the specificiation anymore?\n 138: true,\n 139: true,\n 134: true\n };\n /**\n * Accepts input from a ElementaryStream and produces H.264 NAL unit data\n * events.\n */\n\n H264Stream$1 = function () {\n var nalByteStream = new NalByteStream(),\n self,\n trackId,\n currentPts,\n currentDts,\n discardEmulationPreventionBytes,\n readSequenceParameterSet,\n skipScalingList;\n H264Stream$1.prototype.init.call(this);\n self = this;\n /*\n * Pushes a packet from a stream onto the NalByteStream\n *\n * @param {Object} packet - A packet received from a stream\n * @param {Uint8Array} packet.data - The raw bytes of the packet\n * @param {Number} packet.dts - Decode timestamp of the packet\n * @param {Number} packet.pts - Presentation timestamp of the packet\n * @param {Number} packet.trackId - The id of the h264 track this packet came from\n * @param {('video'|'audio')} packet.type - The type of packet\n *\n */\n\n this.push = function (packet) {\n if (packet.type !== 'video') {\n return;\n }\n trackId = packet.trackId;\n currentPts = packet.pts;\n currentDts = packet.dts;\n nalByteStream.push(packet);\n };\n /*\n * Identify NAL unit types and pass on the NALU, trackId, presentation and decode timestamps\n * for the NALUs to the next stream component.\n * Also, preprocess caption and sequence parameter NALUs.\n *\n * @param {Uint8Array} data - A NAL unit identified by `NalByteStream.push`\n * @see NalByteStream.push\n */\n\n nalByteStream.on('data', function (data) {\n var event = {\n trackId: trackId,\n pts: currentPts,\n dts: currentDts,\n data: data,\n nalUnitTypeCode: data[0] & 0x1f\n };\n switch (event.nalUnitTypeCode) {\n case 0x05:\n event.nalUnitType = 'slice_layer_without_partitioning_rbsp_idr';\n break;\n case 0x06:\n event.nalUnitType = 'sei_rbsp';\n event.escapedRBSP = discardEmulationPreventionBytes(data.subarray(1));\n break;\n case 0x07:\n event.nalUnitType = 'seq_parameter_set_rbsp';\n event.escapedRBSP = discardEmulationPreventionBytes(data.subarray(1));\n event.config = readSequenceParameterSet(event.escapedRBSP);\n break;\n case 0x08:\n event.nalUnitType = 'pic_parameter_set_rbsp';\n break;\n case 0x09:\n event.nalUnitType = 'access_unit_delimiter_rbsp';\n break;\n } // This triggers data on the H264Stream\n\n self.trigger('data', event);\n });\n nalByteStream.on('done', function () {\n self.trigger('done');\n });\n nalByteStream.on('partialdone', function () {\n self.trigger('partialdone');\n });\n nalByteStream.on('reset', function () {\n self.trigger('reset');\n });\n nalByteStream.on('endedtimeline', function () {\n self.trigger('endedtimeline');\n });\n this.flush = function () {\n nalByteStream.flush();\n };\n this.partialFlush = function () {\n nalByteStream.partialFlush();\n };\n this.reset = function () {\n nalByteStream.reset();\n };\n this.endTimeline = function () {\n nalByteStream.endTimeline();\n };\n /**\n * Advance the ExpGolomb decoder past a scaling list. The scaling\n * list is optionally transmitted as part of a sequence parameter\n * set and is not relevant to transmuxing.\n * @param count {number} the number of entries in this scaling list\n * @param expGolombDecoder {object} an ExpGolomb pointed to the\n * start of a scaling list\n * @see Recommendation ITU-T H.264, Section 7.3.2.1.1.1\n */\n\n skipScalingList = function (count, expGolombDecoder) {\n var lastScale = 8,\n nextScale = 8,\n j,\n deltaScale;\n for (j = 0; j < count; j++) {\n if (nextScale !== 0) {\n deltaScale = expGolombDecoder.readExpGolomb();\n nextScale = (lastScale + deltaScale + 256) % 256;\n }\n lastScale = nextScale === 0 ? lastScale : nextScale;\n }\n };\n /**\n * Expunge any \"Emulation Prevention\" bytes from a \"Raw Byte\n * Sequence Payload\"\n * @param data {Uint8Array} the bytes of a RBSP from a NAL\n * unit\n * @return {Uint8Array} the RBSP without any Emulation\n * Prevention Bytes\n */\n\n discardEmulationPreventionBytes = function (data) {\n var length = data.byteLength,\n emulationPreventionBytesPositions = [],\n i = 1,\n newLength,\n newData; // Find all `Emulation Prevention Bytes`\n\n while (i < length - 2) {\n if (data[i] === 0 && data[i + 1] === 0 && data[i + 2] === 0x03) {\n emulationPreventionBytesPositions.push(i + 2);\n i += 2;\n } else {\n i++;\n }\n } // If no Emulation Prevention Bytes were found just return the original\n // array\n\n if (emulationPreventionBytesPositions.length === 0) {\n return data;\n } // Create a new array to hold the NAL unit data\n\n newLength = length - emulationPreventionBytesPositions.length;\n newData = new Uint8Array(newLength);\n var sourceIndex = 0;\n for (i = 0; i < newLength; sourceIndex++, i++) {\n if (sourceIndex === emulationPreventionBytesPositions[0]) {\n // Skip this byte\n sourceIndex++; // Remove this position index\n\n emulationPreventionBytesPositions.shift();\n }\n newData[i] = data[sourceIndex];\n }\n return newData;\n };\n /**\n * Read a sequence parameter set and return some interesting video\n * properties. A sequence parameter set is the H264 metadata that\n * describes the properties of upcoming video frames.\n * @param data {Uint8Array} the bytes of a sequence parameter set\n * @return {object} an object with configuration parsed from the\n * sequence parameter set, including the dimensions of the\n * associated video frames.\n */\n\n readSequenceParameterSet = function (data) {\n var frameCropLeftOffset = 0,\n frameCropRightOffset = 0,\n frameCropTopOffset = 0,\n frameCropBottomOffset = 0,\n expGolombDecoder,\n profileIdc,\n levelIdc,\n profileCompatibility,\n chromaFormatIdc,\n picOrderCntType,\n numRefFramesInPicOrderCntCycle,\n picWidthInMbsMinus1,\n picHeightInMapUnitsMinus1,\n frameMbsOnlyFlag,\n scalingListCount,\n sarRatio = [1, 1],\n aspectRatioIdc,\n i;\n expGolombDecoder = new ExpGolomb(data);\n profileIdc = expGolombDecoder.readUnsignedByte(); // profile_idc\n\n profileCompatibility = expGolombDecoder.readUnsignedByte(); // constraint_set[0-5]_flag\n\n levelIdc = expGolombDecoder.readUnsignedByte(); // level_idc u(8)\n\n expGolombDecoder.skipUnsignedExpGolomb(); // seq_parameter_set_id\n // some profiles have more optional data we don't need\n\n if (PROFILES_WITH_OPTIONAL_SPS_DATA[profileIdc]) {\n chromaFormatIdc = expGolombDecoder.readUnsignedExpGolomb();\n if (chromaFormatIdc === 3) {\n expGolombDecoder.skipBits(1); // separate_colour_plane_flag\n }\n\n expGolombDecoder.skipUnsignedExpGolomb(); // bit_depth_luma_minus8\n\n expGolombDecoder.skipUnsignedExpGolomb(); // bit_depth_chroma_minus8\n\n expGolombDecoder.skipBits(1); // qpprime_y_zero_transform_bypass_flag\n\n if (expGolombDecoder.readBoolean()) {\n // seq_scaling_matrix_present_flag\n scalingListCount = chromaFormatIdc !== 3 ? 8 : 12;\n for (i = 0; i < scalingListCount; i++) {\n if (expGolombDecoder.readBoolean()) {\n // seq_scaling_list_present_flag[ i ]\n if (i < 6) {\n skipScalingList(16, expGolombDecoder);\n } else {\n skipScalingList(64, expGolombDecoder);\n }\n }\n }\n }\n }\n expGolombDecoder.skipUnsignedExpGolomb(); // log2_max_frame_num_minus4\n\n picOrderCntType = expGolombDecoder.readUnsignedExpGolomb();\n if (picOrderCntType === 0) {\n expGolombDecoder.readUnsignedExpGolomb(); // log2_max_pic_order_cnt_lsb_minus4\n } else if (picOrderCntType === 1) {\n expGolombDecoder.skipBits(1); // delta_pic_order_always_zero_flag\n\n expGolombDecoder.skipExpGolomb(); // offset_for_non_ref_pic\n\n expGolombDecoder.skipExpGolomb(); // offset_for_top_to_bottom_field\n\n numRefFramesInPicOrderCntCycle = expGolombDecoder.readUnsignedExpGolomb();\n for (i = 0; i < numRefFramesInPicOrderCntCycle; i++) {\n expGolombDecoder.skipExpGolomb(); // offset_for_ref_frame[ i ]\n }\n }\n\n expGolombDecoder.skipUnsignedExpGolomb(); // max_num_ref_frames\n\n expGolombDecoder.skipBits(1); // gaps_in_frame_num_value_allowed_flag\n\n picWidthInMbsMinus1 = expGolombDecoder.readUnsignedExpGolomb();\n picHeightInMapUnitsMinus1 = expGolombDecoder.readUnsignedExpGolomb();\n frameMbsOnlyFlag = expGolombDecoder.readBits(1);\n if (frameMbsOnlyFlag === 0) {\n expGolombDecoder.skipBits(1); // mb_adaptive_frame_field_flag\n }\n\n expGolombDecoder.skipBits(1); // direct_8x8_inference_flag\n\n if (expGolombDecoder.readBoolean()) {\n // frame_cropping_flag\n frameCropLeftOffset = expGolombDecoder.readUnsignedExpGolomb();\n frameCropRightOffset = expGolombDecoder.readUnsignedExpGolomb();\n frameCropTopOffset = expGolombDecoder.readUnsignedExpGolomb();\n frameCropBottomOffset = expGolombDecoder.readUnsignedExpGolomb();\n }\n if (expGolombDecoder.readBoolean()) {\n // vui_parameters_present_flag\n if (expGolombDecoder.readBoolean()) {\n // aspect_ratio_info_present_flag\n aspectRatioIdc = expGolombDecoder.readUnsignedByte();\n switch (aspectRatioIdc) {\n case 1:\n sarRatio = [1, 1];\n break;\n case 2:\n sarRatio = [12, 11];\n break;\n case 3:\n sarRatio = [10, 11];\n break;\n case 4:\n sarRatio = [16, 11];\n break;\n case 5:\n sarRatio = [40, 33];\n break;\n case 6:\n sarRatio = [24, 11];\n break;\n case 7:\n sarRatio = [20, 11];\n break;\n case 8:\n sarRatio = [32, 11];\n break;\n case 9:\n sarRatio = [80, 33];\n break;\n case 10:\n sarRatio = [18, 11];\n break;\n case 11:\n sarRatio = [15, 11];\n break;\n case 12:\n sarRatio = [64, 33];\n break;\n case 13:\n sarRatio = [160, 99];\n break;\n case 14:\n sarRatio = [4, 3];\n break;\n case 15:\n sarRatio = [3, 2];\n break;\n case 16:\n sarRatio = [2, 1];\n break;\n case 255:\n {\n sarRatio = [expGolombDecoder.readUnsignedByte() << 8 | expGolombDecoder.readUnsignedByte(), expGolombDecoder.readUnsignedByte() << 8 | expGolombDecoder.readUnsignedByte()];\n break;\n }\n }\n if (sarRatio) {\n sarRatio[0] / sarRatio[1];\n }\n }\n }\n return {\n profileIdc: profileIdc,\n levelIdc: levelIdc,\n profileCompatibility: profileCompatibility,\n width: (picWidthInMbsMinus1 + 1) * 16 - frameCropLeftOffset * 2 - frameCropRightOffset * 2,\n height: (2 - frameMbsOnlyFlag) * (picHeightInMapUnitsMinus1 + 1) * 16 - frameCropTopOffset * 2 - frameCropBottomOffset * 2,\n // sar is sample aspect ratio\n sarRatio: sarRatio\n };\n };\n };\n H264Stream$1.prototype = new Stream$2();\n var h264 = {\n H264Stream: H264Stream$1,\n NalByteStream: NalByteStream\n };\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * Utilities to detect basic properties and metadata about Aac data.\n */\n\n var ADTS_SAMPLING_FREQUENCIES = [96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 7350];\n var parseId3TagSize = function (header, byteIndex) {\n var returnSize = header[byteIndex + 6] << 21 | header[byteIndex + 7] << 14 | header[byteIndex + 8] << 7 | header[byteIndex + 9],\n flags = header[byteIndex + 5],\n footerPresent = (flags & 16) >> 4; // if we get a negative returnSize clamp it to 0\n\n returnSize = returnSize >= 0 ? returnSize : 0;\n if (footerPresent) {\n return returnSize + 20;\n }\n return returnSize + 10;\n };\n var getId3Offset = function (data, offset) {\n if (data.length - offset < 10 || data[offset] !== 'I'.charCodeAt(0) || data[offset + 1] !== 'D'.charCodeAt(0) || data[offset + 2] !== '3'.charCodeAt(0)) {\n return offset;\n }\n offset += parseId3TagSize(data, offset);\n return getId3Offset(data, offset);\n }; // TODO: use vhs-utils\n\n var isLikelyAacData$1 = function (data) {\n var offset = getId3Offset(data, 0);\n return data.length >= offset + 2 && (data[offset] & 0xFF) === 0xFF && (data[offset + 1] & 0xF0) === 0xF0 &&\n // verify that the 2 layer bits are 0, aka this\n // is not mp3 data but aac data.\n (data[offset + 1] & 0x16) === 0x10;\n };\n var parseSyncSafeInteger = function (data) {\n return data[0] << 21 | data[1] << 14 | data[2] << 7 | data[3];\n }; // return a percent-encoded representation of the specified byte range\n // @see http://en.wikipedia.org/wiki/Percent-encoding\n\n var percentEncode = function (bytes, start, end) {\n var i,\n result = '';\n for (i = start; i < end; i++) {\n result += '%' + ('00' + bytes[i].toString(16)).slice(-2);\n }\n return result;\n }; // return the string representation of the specified byte range,\n // interpreted as ISO-8859-1.\n\n var parseIso88591 = function (bytes, start, end) {\n return unescape(percentEncode(bytes, start, end)); // jshint ignore:line\n };\n\n var parseAdtsSize = function (header, byteIndex) {\n var lowThree = (header[byteIndex + 5] & 0xE0) >> 5,\n middle = header[byteIndex + 4] << 3,\n highTwo = header[byteIndex + 3] & 0x3 << 11;\n return highTwo | middle | lowThree;\n };\n var parseType$4 = function (header, byteIndex) {\n if (header[byteIndex] === 'I'.charCodeAt(0) && header[byteIndex + 1] === 'D'.charCodeAt(0) && header[byteIndex + 2] === '3'.charCodeAt(0)) {\n return 'timed-metadata';\n } else if (header[byteIndex] & 0xff === 0xff && (header[byteIndex + 1] & 0xf0) === 0xf0) {\n return 'audio';\n }\n return null;\n };\n var parseSampleRate = function (packet) {\n var i = 0;\n while (i + 5 < packet.length) {\n if (packet[i] !== 0xFF || (packet[i + 1] & 0xF6) !== 0xF0) {\n // If a valid header was not found, jump one forward and attempt to\n // find a valid ADTS header starting at the next byte\n i++;\n continue;\n }\n return ADTS_SAMPLING_FREQUENCIES[(packet[i + 2] & 0x3c) >>> 2];\n }\n return null;\n };\n var parseAacTimestamp = function (packet) {\n var frameStart, frameSize, frame, frameHeader; // find the start of the first frame and the end of the tag\n\n frameStart = 10;\n if (packet[5] & 0x40) {\n // advance the frame start past the extended header\n frameStart += 4; // header size field\n\n frameStart += parseSyncSafeInteger(packet.subarray(10, 14));\n } // parse one or more ID3 frames\n // http://id3.org/id3v2.3.0#ID3v2_frame_overview\n\n do {\n // determine the number of bytes in this frame\n frameSize = parseSyncSafeInteger(packet.subarray(frameStart + 4, frameStart + 8));\n if (frameSize < 1) {\n return null;\n }\n frameHeader = String.fromCharCode(packet[frameStart], packet[frameStart + 1], packet[frameStart + 2], packet[frameStart + 3]);\n if (frameHeader === 'PRIV') {\n frame = packet.subarray(frameStart + 10, frameStart + frameSize + 10);\n for (var i = 0; i < frame.byteLength; i++) {\n if (frame[i] === 0) {\n var owner = parseIso88591(frame, 0, i);\n if (owner === 'com.apple.streaming.transportStreamTimestamp') {\n var d = frame.subarray(i + 1);\n var size = (d[3] & 0x01) << 30 | d[4] << 22 | d[5] << 14 | d[6] << 6 | d[7] >>> 2;\n size *= 4;\n size += d[7] & 0x03;\n return size;\n }\n break;\n }\n }\n }\n frameStart += 10; // advance past the frame header\n\n frameStart += frameSize; // advance past the frame body\n } while (frameStart < packet.byteLength);\n return null;\n };\n var utils = {\n isLikelyAacData: isLikelyAacData$1,\n parseId3TagSize: parseId3TagSize,\n parseAdtsSize: parseAdtsSize,\n parseType: parseType$4,\n parseSampleRate: parseSampleRate,\n parseAacTimestamp: parseAacTimestamp\n };\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * A stream-based aac to mp4 converter. This utility can be used to\n * deliver mp4s to a SourceBuffer on platforms that support native\n * Media Source Extensions.\n */\n\n var Stream$1 = stream;\n var aacUtils = utils; // Constants\n\n var AacStream$1;\n /**\n * Splits an incoming stream of binary data into ADTS and ID3 Frames.\n */\n\n AacStream$1 = function () {\n var everything = new Uint8Array(),\n timeStamp = 0;\n AacStream$1.prototype.init.call(this);\n this.setTimestamp = function (timestamp) {\n timeStamp = timestamp;\n };\n this.push = function (bytes) {\n var frameSize = 0,\n byteIndex = 0,\n bytesLeft,\n chunk,\n packet,\n tempLength; // If there are bytes remaining from the last segment, prepend them to the\n // bytes that were pushed in\n\n if (everything.length) {\n tempLength = everything.length;\n everything = new Uint8Array(bytes.byteLength + tempLength);\n everything.set(everything.subarray(0, tempLength));\n everything.set(bytes, tempLength);\n } else {\n everything = bytes;\n }\n while (everything.length - byteIndex >= 3) {\n if (everything[byteIndex] === 'I'.charCodeAt(0) && everything[byteIndex + 1] === 'D'.charCodeAt(0) && everything[byteIndex + 2] === '3'.charCodeAt(0)) {\n // Exit early because we don't have enough to parse\n // the ID3 tag header\n if (everything.length - byteIndex < 10) {\n break;\n } // check framesize\n\n frameSize = aacUtils.parseId3TagSize(everything, byteIndex); // Exit early if we don't have enough in the buffer\n // to emit a full packet\n // Add to byteIndex to support multiple ID3 tags in sequence\n\n if (byteIndex + frameSize > everything.length) {\n break;\n }\n chunk = {\n type: 'timed-metadata',\n data: everything.subarray(byteIndex, byteIndex + frameSize)\n };\n this.trigger('data', chunk);\n byteIndex += frameSize;\n continue;\n } else if ((everything[byteIndex] & 0xff) === 0xff && (everything[byteIndex + 1] & 0xf0) === 0xf0) {\n // Exit early because we don't have enough to parse\n // the ADTS frame header\n if (everything.length - byteIndex < 7) {\n break;\n }\n frameSize = aacUtils.parseAdtsSize(everything, byteIndex); // Exit early if we don't have enough in the buffer\n // to emit a full packet\n\n if (byteIndex + frameSize > everything.length) {\n break;\n }\n packet = {\n type: 'audio',\n data: everything.subarray(byteIndex, byteIndex + frameSize),\n pts: timeStamp,\n dts: timeStamp\n };\n this.trigger('data', packet);\n byteIndex += frameSize;\n continue;\n }\n byteIndex++;\n }\n bytesLeft = everything.length - byteIndex;\n if (bytesLeft > 0) {\n everything = everything.subarray(byteIndex);\n } else {\n everything = new Uint8Array();\n }\n };\n this.reset = function () {\n everything = new Uint8Array();\n this.trigger('reset');\n };\n this.endTimeline = function () {\n everything = new Uint8Array();\n this.trigger('endedtimeline');\n };\n };\n AacStream$1.prototype = new Stream$1();\n var aac = AacStream$1;\n var AUDIO_PROPERTIES$1 = ['audioobjecttype', 'channelcount', 'samplerate', 'samplingfrequencyindex', 'samplesize'];\n var audioProperties = AUDIO_PROPERTIES$1;\n var VIDEO_PROPERTIES$1 = ['width', 'height', 'profileIdc', 'levelIdc', 'profileCompatibility', 'sarRatio'];\n var videoProperties = VIDEO_PROPERTIES$1;\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * A stream-based mp2t to mp4 converter. This utility can be used to\n * deliver mp4s to a SourceBuffer on platforms that support native\n * Media Source Extensions.\n */\n\n var Stream = stream;\n var mp4 = mp4Generator;\n var frameUtils = frameUtils$1;\n var audioFrameUtils = audioFrameUtils$1;\n var trackDecodeInfo = trackDecodeInfo$1;\n var m2ts = m2ts_1;\n var clock = clock$2;\n var AdtsStream = adts;\n var H264Stream = h264.H264Stream;\n var AacStream = aac;\n var isLikelyAacData = utils.isLikelyAacData;\n var ONE_SECOND_IN_TS$1 = clock$2.ONE_SECOND_IN_TS;\n var AUDIO_PROPERTIES = audioProperties;\n var VIDEO_PROPERTIES = videoProperties; // object types\n\n var VideoSegmentStream, AudioSegmentStream, Transmuxer, CoalesceStream;\n var retriggerForStream = function (key, event) {\n event.stream = key;\n this.trigger('log', event);\n };\n var addPipelineLogRetriggers = function (transmuxer, pipeline) {\n var keys = Object.keys(pipeline);\n for (var i = 0; i < keys.length; i++) {\n var key = keys[i]; // skip non-stream keys and headOfPipeline\n // which is just a duplicate\n\n if (key === 'headOfPipeline' || !pipeline[key].on) {\n continue;\n }\n pipeline[key].on('log', retriggerForStream.bind(transmuxer, key));\n }\n };\n /**\n * Compare two arrays (even typed) for same-ness\n */\n\n var arrayEquals = function (a, b) {\n var i;\n if (a.length !== b.length) {\n return false;\n } // compare the value of each element in the array\n\n for (i = 0; i < a.length; i++) {\n if (a[i] !== b[i]) {\n return false;\n }\n }\n return true;\n };\n var generateSegmentTimingInfo = function (baseMediaDecodeTime, startDts, startPts, endDts, endPts, prependedContentDuration) {\n var ptsOffsetFromDts = startPts - startDts,\n decodeDuration = endDts - startDts,\n presentationDuration = endPts - startPts; // The PTS and DTS values are based on the actual stream times from the segment,\n // however, the player time values will reflect a start from the baseMediaDecodeTime.\n // In order to provide relevant values for the player times, base timing info on the\n // baseMediaDecodeTime and the DTS and PTS durations of the segment.\n\n return {\n start: {\n dts: baseMediaDecodeTime,\n pts: baseMediaDecodeTime + ptsOffsetFromDts\n },\n end: {\n dts: baseMediaDecodeTime + decodeDuration,\n pts: baseMediaDecodeTime + presentationDuration\n },\n prependedContentDuration: prependedContentDuration,\n baseMediaDecodeTime: baseMediaDecodeTime\n };\n };\n /**\n * Constructs a single-track, ISO BMFF media segment from AAC data\n * events. The output of this stream can be fed to a SourceBuffer\n * configured with a suitable initialization segment.\n * @param track {object} track metadata configuration\n * @param options {object} transmuxer options object\n * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps\n * in the source; false to adjust the first segment to start at 0.\n */\n\n AudioSegmentStream = function (track, options) {\n var adtsFrames = [],\n sequenceNumber,\n earliestAllowedDts = 0,\n audioAppendStartTs = 0,\n videoBaseMediaDecodeTime = Infinity;\n options = options || {};\n sequenceNumber = options.firstSequenceNumber || 0;\n AudioSegmentStream.prototype.init.call(this);\n this.push = function (data) {\n trackDecodeInfo.collectDtsInfo(track, data);\n if (track) {\n AUDIO_PROPERTIES.forEach(function (prop) {\n track[prop] = data[prop];\n });\n } // buffer audio data until end() is called\n\n adtsFrames.push(data);\n };\n this.setEarliestDts = function (earliestDts) {\n earliestAllowedDts = earliestDts;\n };\n this.setVideoBaseMediaDecodeTime = function (baseMediaDecodeTime) {\n videoBaseMediaDecodeTime = baseMediaDecodeTime;\n };\n this.setAudioAppendStart = function (timestamp) {\n audioAppendStartTs = timestamp;\n };\n this.flush = function () {\n var frames, moof, mdat, boxes, frameDuration, segmentDuration, videoClockCyclesOfSilencePrefixed; // return early if no audio data has been observed\n\n if (adtsFrames.length === 0) {\n this.trigger('done', 'AudioSegmentStream');\n return;\n }\n frames = audioFrameUtils.trimAdtsFramesByEarliestDts(adtsFrames, track, earliestAllowedDts);\n track.baseMediaDecodeTime = trackDecodeInfo.calculateTrackBaseMediaDecodeTime(track, options.keepOriginalTimestamps); // amount of audio filled but the value is in video clock rather than audio clock\n\n videoClockCyclesOfSilencePrefixed = audioFrameUtils.prefixWithSilence(track, frames, audioAppendStartTs, videoBaseMediaDecodeTime); // we have to build the index from byte locations to\n // samples (that is, adts frames) in the audio data\n\n track.samples = audioFrameUtils.generateSampleTable(frames); // concatenate the audio data to constuct the mdat\n\n mdat = mp4.mdat(audioFrameUtils.concatenateFrameData(frames));\n adtsFrames = [];\n moof = mp4.moof(sequenceNumber, [track]);\n boxes = new Uint8Array(moof.byteLength + mdat.byteLength); // bump the sequence number for next time\n\n sequenceNumber++;\n boxes.set(moof);\n boxes.set(mdat, moof.byteLength);\n trackDecodeInfo.clearDtsInfo(track);\n frameDuration = Math.ceil(ONE_SECOND_IN_TS$1 * 1024 / track.samplerate); // TODO this check was added to maintain backwards compatibility (particularly with\n // tests) on adding the timingInfo event. However, it seems unlikely that there's a\n // valid use-case where an init segment/data should be triggered without associated\n // frames. Leaving for now, but should be looked into.\n\n if (frames.length) {\n segmentDuration = frames.length * frameDuration;\n this.trigger('segmentTimingInfo', generateSegmentTimingInfo(\n // The audio track's baseMediaDecodeTime is in audio clock cycles, but the\n // frame info is in video clock cycles. Convert to match expectation of\n // listeners (that all timestamps will be based on video clock cycles).\n clock.audioTsToVideoTs(track.baseMediaDecodeTime, track.samplerate),\n // frame times are already in video clock, as is segment duration\n frames[0].dts, frames[0].pts, frames[0].dts + segmentDuration, frames[0].pts + segmentDuration, videoClockCyclesOfSilencePrefixed || 0));\n this.trigger('timingInfo', {\n start: frames[0].pts,\n end: frames[0].pts + segmentDuration\n });\n }\n this.trigger('data', {\n track: track,\n boxes: boxes\n });\n this.trigger('done', 'AudioSegmentStream');\n };\n this.reset = function () {\n trackDecodeInfo.clearDtsInfo(track);\n adtsFrames = [];\n this.trigger('reset');\n };\n };\n AudioSegmentStream.prototype = new Stream();\n /**\n * Constructs a single-track, ISO BMFF media segment from H264 data\n * events. The output of this stream can be fed to a SourceBuffer\n * configured with a suitable initialization segment.\n * @param track {object} track metadata configuration\n * @param options {object} transmuxer options object\n * @param options.alignGopsAtEnd {boolean} If true, start from the end of the\n * gopsToAlignWith list when attempting to align gop pts\n * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps\n * in the source; false to adjust the first segment to start at 0.\n */\n\n VideoSegmentStream = function (track, options) {\n var sequenceNumber,\n nalUnits = [],\n gopsToAlignWith = [],\n config,\n pps;\n options = options || {};\n sequenceNumber = options.firstSequenceNumber || 0;\n VideoSegmentStream.prototype.init.call(this);\n delete track.minPTS;\n this.gopCache_ = [];\n /**\n * Constructs a ISO BMFF segment given H264 nalUnits\n * @param {Object} nalUnit A data event representing a nalUnit\n * @param {String} nalUnit.nalUnitType\n * @param {Object} nalUnit.config Properties for a mp4 track\n * @param {Uint8Array} nalUnit.data The nalUnit bytes\n * @see lib/codecs/h264.js\n **/\n\n this.push = function (nalUnit) {\n trackDecodeInfo.collectDtsInfo(track, nalUnit); // record the track config\n\n if (nalUnit.nalUnitType === 'seq_parameter_set_rbsp' && !config) {\n config = nalUnit.config;\n track.sps = [nalUnit.data];\n VIDEO_PROPERTIES.forEach(function (prop) {\n track[prop] = config[prop];\n }, this);\n }\n if (nalUnit.nalUnitType === 'pic_parameter_set_rbsp' && !pps) {\n pps = nalUnit.data;\n track.pps = [nalUnit.data];\n } // buffer video until flush() is called\n\n nalUnits.push(nalUnit);\n };\n /**\n * Pass constructed ISO BMFF track and boxes on to the\n * next stream in the pipeline\n **/\n\n this.flush = function () {\n var frames,\n gopForFusion,\n gops,\n moof,\n mdat,\n boxes,\n prependedContentDuration = 0,\n firstGop,\n lastGop; // Throw away nalUnits at the start of the byte stream until\n // we find the first AUD\n\n while (nalUnits.length) {\n if (nalUnits[0].nalUnitType === 'access_unit_delimiter_rbsp') {\n break;\n }\n nalUnits.shift();\n } // Return early if no video data has been observed\n\n if (nalUnits.length === 0) {\n this.resetStream_();\n this.trigger('done', 'VideoSegmentStream');\n return;\n } // Organize the raw nal-units into arrays that represent\n // higher-level constructs such as frames and gops\n // (group-of-pictures)\n\n frames = frameUtils.groupNalsIntoFrames(nalUnits);\n gops = frameUtils.groupFramesIntoGops(frames); // If the first frame of this fragment is not a keyframe we have\n // a problem since MSE (on Chrome) requires a leading keyframe.\n //\n // We have two approaches to repairing this situation:\n // 1) GOP-FUSION:\n // This is where we keep track of the GOPS (group-of-pictures)\n // from previous fragments and attempt to find one that we can\n // prepend to the current fragment in order to create a valid\n // fragment.\n // 2) KEYFRAME-PULLING:\n // Here we search for the first keyframe in the fragment and\n // throw away all the frames between the start of the fragment\n // and that keyframe. We then extend the duration and pull the\n // PTS of the keyframe forward so that it covers the time range\n // of the frames that were disposed of.\n //\n // #1 is far prefereable over #2 which can cause \"stuttering\" but\n // requires more things to be just right.\n\n if (!gops[0][0].keyFrame) {\n // Search for a gop for fusion from our gopCache\n gopForFusion = this.getGopForFusion_(nalUnits[0], track);\n if (gopForFusion) {\n // in order to provide more accurate timing information about the segment, save\n // the number of seconds prepended to the original segment due to GOP fusion\n prependedContentDuration = gopForFusion.duration;\n gops.unshift(gopForFusion); // Adjust Gops' metadata to account for the inclusion of the\n // new gop at the beginning\n\n gops.byteLength += gopForFusion.byteLength;\n gops.nalCount += gopForFusion.nalCount;\n gops.pts = gopForFusion.pts;\n gops.dts = gopForFusion.dts;\n gops.duration += gopForFusion.duration;\n } else {\n // If we didn't find a candidate gop fall back to keyframe-pulling\n gops = frameUtils.extendFirstKeyFrame(gops);\n }\n } // Trim gops to align with gopsToAlignWith\n\n if (gopsToAlignWith.length) {\n var alignedGops;\n if (options.alignGopsAtEnd) {\n alignedGops = this.alignGopsAtEnd_(gops);\n } else {\n alignedGops = this.alignGopsAtStart_(gops);\n }\n if (!alignedGops) {\n // save all the nals in the last GOP into the gop cache\n this.gopCache_.unshift({\n gop: gops.pop(),\n pps: track.pps,\n sps: track.sps\n }); // Keep a maximum of 6 GOPs in the cache\n\n this.gopCache_.length = Math.min(6, this.gopCache_.length); // Clear nalUnits\n\n nalUnits = []; // return early no gops can be aligned with desired gopsToAlignWith\n\n this.resetStream_();\n this.trigger('done', 'VideoSegmentStream');\n return;\n } // Some gops were trimmed. clear dts info so minSegmentDts and pts are correct\n // when recalculated before sending off to CoalesceStream\n\n trackDecodeInfo.clearDtsInfo(track);\n gops = alignedGops;\n }\n trackDecodeInfo.collectDtsInfo(track, gops); // First, we have to build the index from byte locations to\n // samples (that is, frames) in the video data\n\n track.samples = frameUtils.generateSampleTable(gops); // Concatenate the video data and construct the mdat\n\n mdat = mp4.mdat(frameUtils.concatenateNalData(gops));\n track.baseMediaDecodeTime = trackDecodeInfo.calculateTrackBaseMediaDecodeTime(track, options.keepOriginalTimestamps);\n this.trigger('processedGopsInfo', gops.map(function (gop) {\n return {\n pts: gop.pts,\n dts: gop.dts,\n byteLength: gop.byteLength\n };\n }));\n firstGop = gops[0];\n lastGop = gops[gops.length - 1];\n this.trigger('segmentTimingInfo', generateSegmentTimingInfo(track.baseMediaDecodeTime, firstGop.dts, firstGop.pts, lastGop.dts + lastGop.duration, lastGop.pts + lastGop.duration, prependedContentDuration));\n this.trigger('timingInfo', {\n start: gops[0].pts,\n end: gops[gops.length - 1].pts + gops[gops.length - 1].duration\n }); // save all the nals in the last GOP into the gop cache\n\n this.gopCache_.unshift({\n gop: gops.pop(),\n pps: track.pps,\n sps: track.sps\n }); // Keep a maximum of 6 GOPs in the cache\n\n this.gopCache_.length = Math.min(6, this.gopCache_.length); // Clear nalUnits\n\n nalUnits = [];\n this.trigger('baseMediaDecodeTime', track.baseMediaDecodeTime);\n this.trigger('timelineStartInfo', track.timelineStartInfo);\n moof = mp4.moof(sequenceNumber, [track]); // it would be great to allocate this array up front instead of\n // throwing away hundreds of media segment fragments\n\n boxes = new Uint8Array(moof.byteLength + mdat.byteLength); // Bump the sequence number for next time\n\n sequenceNumber++;\n boxes.set(moof);\n boxes.set(mdat, moof.byteLength);\n this.trigger('data', {\n track: track,\n boxes: boxes\n });\n this.resetStream_(); // Continue with the flush process now\n\n this.trigger('done', 'VideoSegmentStream');\n };\n this.reset = function () {\n this.resetStream_();\n nalUnits = [];\n this.gopCache_.length = 0;\n gopsToAlignWith.length = 0;\n this.trigger('reset');\n };\n this.resetStream_ = function () {\n trackDecodeInfo.clearDtsInfo(track); // reset config and pps because they may differ across segments\n // for instance, when we are rendition switching\n\n config = undefined;\n pps = undefined;\n }; // Search for a candidate Gop for gop-fusion from the gop cache and\n // return it or return null if no good candidate was found\n\n this.getGopForFusion_ = function (nalUnit) {\n var halfSecond = 45000,\n // Half-a-second in a 90khz clock\n allowableOverlap = 10000,\n // About 3 frames @ 30fps\n nearestDistance = Infinity,\n dtsDistance,\n nearestGopObj,\n currentGop,\n currentGopObj,\n i; // Search for the GOP nearest to the beginning of this nal unit\n\n for (i = 0; i < this.gopCache_.length; i++) {\n currentGopObj = this.gopCache_[i];\n currentGop = currentGopObj.gop; // Reject Gops with different SPS or PPS\n\n if (!(track.pps && arrayEquals(track.pps[0], currentGopObj.pps[0])) || !(track.sps && arrayEquals(track.sps[0], currentGopObj.sps[0]))) {\n continue;\n } // Reject Gops that would require a negative baseMediaDecodeTime\n\n if (currentGop.dts < track.timelineStartInfo.dts) {\n continue;\n } // The distance between the end of the gop and the start of the nalUnit\n\n dtsDistance = nalUnit.dts - currentGop.dts - currentGop.duration; // Only consider GOPS that start before the nal unit and end within\n // a half-second of the nal unit\n\n if (dtsDistance >= -allowableOverlap && dtsDistance <= halfSecond) {\n // Always use the closest GOP we found if there is more than\n // one candidate\n if (!nearestGopObj || nearestDistance > dtsDistance) {\n nearestGopObj = currentGopObj;\n nearestDistance = dtsDistance;\n }\n }\n }\n if (nearestGopObj) {\n return nearestGopObj.gop;\n }\n return null;\n }; // trim gop list to the first gop found that has a matching pts with a gop in the list\n // of gopsToAlignWith starting from the START of the list\n\n this.alignGopsAtStart_ = function (gops) {\n var alignIndex, gopIndex, align, gop, byteLength, nalCount, duration, alignedGops;\n byteLength = gops.byteLength;\n nalCount = gops.nalCount;\n duration = gops.duration;\n alignIndex = gopIndex = 0;\n while (alignIndex < gopsToAlignWith.length && gopIndex < gops.length) {\n align = gopsToAlignWith[alignIndex];\n gop = gops[gopIndex];\n if (align.pts === gop.pts) {\n break;\n }\n if (gop.pts > align.pts) {\n // this current gop starts after the current gop we want to align on, so increment\n // align index\n alignIndex++;\n continue;\n } // current gop starts before the current gop we want to align on. so increment gop\n // index\n\n gopIndex++;\n byteLength -= gop.byteLength;\n nalCount -= gop.nalCount;\n duration -= gop.duration;\n }\n if (gopIndex === 0) {\n // no gops to trim\n return gops;\n }\n if (gopIndex === gops.length) {\n // all gops trimmed, skip appending all gops\n return null;\n }\n alignedGops = gops.slice(gopIndex);\n alignedGops.byteLength = byteLength;\n alignedGops.duration = duration;\n alignedGops.nalCount = nalCount;\n alignedGops.pts = alignedGops[0].pts;\n alignedGops.dts = alignedGops[0].dts;\n return alignedGops;\n }; // trim gop list to the first gop found that has a matching pts with a gop in the list\n // of gopsToAlignWith starting from the END of the list\n\n this.alignGopsAtEnd_ = function (gops) {\n var alignIndex, gopIndex, align, gop, alignEndIndex, matchFound;\n alignIndex = gopsToAlignWith.length - 1;\n gopIndex = gops.length - 1;\n alignEndIndex = null;\n matchFound = false;\n while (alignIndex >= 0 && gopIndex >= 0) {\n align = gopsToAlignWith[alignIndex];\n gop = gops[gopIndex];\n if (align.pts === gop.pts) {\n matchFound = true;\n break;\n }\n if (align.pts > gop.pts) {\n alignIndex--;\n continue;\n }\n if (alignIndex === gopsToAlignWith.length - 1) {\n // gop.pts is greater than the last alignment candidate. If no match is found\n // by the end of this loop, we still want to append gops that come after this\n // point\n alignEndIndex = gopIndex;\n }\n gopIndex--;\n }\n if (!matchFound && alignEndIndex === null) {\n return null;\n }\n var trimIndex;\n if (matchFound) {\n trimIndex = gopIndex;\n } else {\n trimIndex = alignEndIndex;\n }\n if (trimIndex === 0) {\n return gops;\n }\n var alignedGops = gops.slice(trimIndex);\n var metadata = alignedGops.reduce(function (total, gop) {\n total.byteLength += gop.byteLength;\n total.duration += gop.duration;\n total.nalCount += gop.nalCount;\n return total;\n }, {\n byteLength: 0,\n duration: 0,\n nalCount: 0\n });\n alignedGops.byteLength = metadata.byteLength;\n alignedGops.duration = metadata.duration;\n alignedGops.nalCount = metadata.nalCount;\n alignedGops.pts = alignedGops[0].pts;\n alignedGops.dts = alignedGops[0].dts;\n return alignedGops;\n };\n this.alignGopsWith = function (newGopsToAlignWith) {\n gopsToAlignWith = newGopsToAlignWith;\n };\n };\n VideoSegmentStream.prototype = new Stream();\n /**\n * A Stream that can combine multiple streams (ie. audio & video)\n * into a single output segment for MSE. Also supports audio-only\n * and video-only streams.\n * @param options {object} transmuxer options object\n * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps\n * in the source; false to adjust the first segment to start at media timeline start.\n */\n\n CoalesceStream = function (options, metadataStream) {\n // Number of Tracks per output segment\n // If greater than 1, we combine multiple\n // tracks into a single segment\n this.numberOfTracks = 0;\n this.metadataStream = metadataStream;\n options = options || {};\n if (typeof options.remux !== 'undefined') {\n this.remuxTracks = !!options.remux;\n } else {\n this.remuxTracks = true;\n }\n if (typeof options.keepOriginalTimestamps === 'boolean') {\n this.keepOriginalTimestamps = options.keepOriginalTimestamps;\n } else {\n this.keepOriginalTimestamps = false;\n }\n this.pendingTracks = [];\n this.videoTrack = null;\n this.pendingBoxes = [];\n this.pendingCaptions = [];\n this.pendingMetadata = [];\n this.pendingBytes = 0;\n this.emittedTracks = 0;\n CoalesceStream.prototype.init.call(this); // Take output from multiple\n\n this.push = function (output) {\n // buffer incoming captions until the associated video segment\n // finishes\n if (output.content || output.text) {\n return this.pendingCaptions.push(output);\n } // buffer incoming id3 tags until the final flush\n\n if (output.frames) {\n return this.pendingMetadata.push(output);\n } // Add this track to the list of pending tracks and store\n // important information required for the construction of\n // the final segment\n\n this.pendingTracks.push(output.track);\n this.pendingBytes += output.boxes.byteLength; // TODO: is there an issue for this against chrome?\n // We unshift audio and push video because\n // as of Chrome 75 when switching from\n // one init segment to another if the video\n // mdat does not appear after the audio mdat\n // only audio will play for the duration of our transmux.\n\n if (output.track.type === 'video') {\n this.videoTrack = output.track;\n this.pendingBoxes.push(output.boxes);\n }\n if (output.track.type === 'audio') {\n this.audioTrack = output.track;\n this.pendingBoxes.unshift(output.boxes);\n }\n };\n };\n CoalesceStream.prototype = new Stream();\n CoalesceStream.prototype.flush = function (flushSource) {\n var offset = 0,\n event = {\n captions: [],\n captionStreams: {},\n metadata: [],\n info: {}\n },\n caption,\n id3,\n initSegment,\n timelineStartPts = 0,\n i;\n if (this.pendingTracks.length < this.numberOfTracks) {\n if (flushSource !== 'VideoSegmentStream' && flushSource !== 'AudioSegmentStream') {\n // Return because we haven't received a flush from a data-generating\n // portion of the segment (meaning that we have only recieved meta-data\n // or captions.)\n return;\n } else if (this.remuxTracks) {\n // Return until we have enough tracks from the pipeline to remux (if we\n // are remuxing audio and video into a single MP4)\n return;\n } else if (this.pendingTracks.length === 0) {\n // In the case where we receive a flush without any data having been\n // received we consider it an emitted track for the purposes of coalescing\n // `done` events.\n // We do this for the case where there is an audio and video track in the\n // segment but no audio data. (seen in several playlists with alternate\n // audio tracks and no audio present in the main TS segments.)\n this.emittedTracks++;\n if (this.emittedTracks >= this.numberOfTracks) {\n this.trigger('done');\n this.emittedTracks = 0;\n }\n return;\n }\n }\n if (this.videoTrack) {\n timelineStartPts = this.videoTrack.timelineStartInfo.pts;\n VIDEO_PROPERTIES.forEach(function (prop) {\n event.info[prop] = this.videoTrack[prop];\n }, this);\n } else if (this.audioTrack) {\n timelineStartPts = this.audioTrack.timelineStartInfo.pts;\n AUDIO_PROPERTIES.forEach(function (prop) {\n event.info[prop] = this.audioTrack[prop];\n }, this);\n }\n if (this.videoTrack || this.audioTrack) {\n if (this.pendingTracks.length === 1) {\n event.type = this.pendingTracks[0].type;\n } else {\n event.type = 'combined';\n }\n this.emittedTracks += this.pendingTracks.length;\n initSegment = mp4.initSegment(this.pendingTracks); // Create a new typed array to hold the init segment\n\n event.initSegment = new Uint8Array(initSegment.byteLength); // Create an init segment containing a moov\n // and track definitions\n\n event.initSegment.set(initSegment); // Create a new typed array to hold the moof+mdats\n\n event.data = new Uint8Array(this.pendingBytes); // Append each moof+mdat (one per track) together\n\n for (i = 0; i < this.pendingBoxes.length; i++) {\n event.data.set(this.pendingBoxes[i], offset);\n offset += this.pendingBoxes[i].byteLength;\n } // Translate caption PTS times into second offsets to match the\n // video timeline for the segment, and add track info\n\n for (i = 0; i < this.pendingCaptions.length; i++) {\n caption = this.pendingCaptions[i];\n caption.startTime = clock.metadataTsToSeconds(caption.startPts, timelineStartPts, this.keepOriginalTimestamps);\n caption.endTime = clock.metadataTsToSeconds(caption.endPts, timelineStartPts, this.keepOriginalTimestamps);\n event.captionStreams[caption.stream] = true;\n event.captions.push(caption);\n } // Translate ID3 frame PTS times into second offsets to match the\n // video timeline for the segment\n\n for (i = 0; i < this.pendingMetadata.length; i++) {\n id3 = this.pendingMetadata[i];\n id3.cueTime = clock.metadataTsToSeconds(id3.pts, timelineStartPts, this.keepOriginalTimestamps);\n event.metadata.push(id3);\n } // We add this to every single emitted segment even though we only need\n // it for the first\n\n event.metadata.dispatchType = this.metadataStream.dispatchType; // Reset stream state\n\n this.pendingTracks.length = 0;\n this.videoTrack = null;\n this.pendingBoxes.length = 0;\n this.pendingCaptions.length = 0;\n this.pendingBytes = 0;\n this.pendingMetadata.length = 0; // Emit the built segment\n // We include captions and ID3 tags for backwards compatibility,\n // ideally we should send only video and audio in the data event\n\n this.trigger('data', event); // Emit each caption to the outside world\n // Ideally, this would happen immediately on parsing captions,\n // but we need to ensure that video data is sent back first\n // so that caption timing can be adjusted to match video timing\n\n for (i = 0; i < event.captions.length; i++) {\n caption = event.captions[i];\n this.trigger('caption', caption);\n } // Emit each id3 tag to the outside world\n // Ideally, this would happen immediately on parsing the tag,\n // but we need to ensure that video data is sent back first\n // so that ID3 frame timing can be adjusted to match video timing\n\n for (i = 0; i < event.metadata.length; i++) {\n id3 = event.metadata[i];\n this.trigger('id3Frame', id3);\n }\n } // Only emit `done` if all tracks have been flushed and emitted\n\n if (this.emittedTracks >= this.numberOfTracks) {\n this.trigger('done');\n this.emittedTracks = 0;\n }\n };\n CoalesceStream.prototype.setRemux = function (val) {\n this.remuxTracks = val;\n };\n /**\n * A Stream that expects MP2T binary data as input and produces\n * corresponding media segments, suitable for use with Media Source\n * Extension (MSE) implementations that support the ISO BMFF byte\n * stream format, like Chrome.\n */\n\n Transmuxer = function (options) {\n var self = this,\n hasFlushed = true,\n videoTrack,\n audioTrack;\n Transmuxer.prototype.init.call(this);\n options = options || {};\n this.baseMediaDecodeTime = options.baseMediaDecodeTime || 0;\n this.transmuxPipeline_ = {};\n this.setupAacPipeline = function () {\n var pipeline = {};\n this.transmuxPipeline_ = pipeline;\n pipeline.type = 'aac';\n pipeline.metadataStream = new m2ts.MetadataStream(); // set up the parsing pipeline\n\n pipeline.aacStream = new AacStream();\n pipeline.audioTimestampRolloverStream = new m2ts.TimestampRolloverStream('audio');\n pipeline.timedMetadataTimestampRolloverStream = new m2ts.TimestampRolloverStream('timed-metadata');\n pipeline.adtsStream = new AdtsStream();\n pipeline.coalesceStream = new CoalesceStream(options, pipeline.metadataStream);\n pipeline.headOfPipeline = pipeline.aacStream;\n pipeline.aacStream.pipe(pipeline.audioTimestampRolloverStream).pipe(pipeline.adtsStream);\n pipeline.aacStream.pipe(pipeline.timedMetadataTimestampRolloverStream).pipe(pipeline.metadataStream).pipe(pipeline.coalesceStream);\n pipeline.metadataStream.on('timestamp', function (frame) {\n pipeline.aacStream.setTimestamp(frame.timeStamp);\n });\n pipeline.aacStream.on('data', function (data) {\n if (data.type !== 'timed-metadata' && data.type !== 'audio' || pipeline.audioSegmentStream) {\n return;\n }\n audioTrack = audioTrack || {\n timelineStartInfo: {\n baseMediaDecodeTime: self.baseMediaDecodeTime\n },\n codec: 'adts',\n type: 'audio'\n }; // hook up the audio segment stream to the first track with aac data\n\n pipeline.coalesceStream.numberOfTracks++;\n pipeline.audioSegmentStream = new AudioSegmentStream(audioTrack, options);\n pipeline.audioSegmentStream.on('log', self.getLogTrigger_('audioSegmentStream'));\n pipeline.audioSegmentStream.on('timingInfo', self.trigger.bind(self, 'audioTimingInfo')); // Set up the final part of the audio pipeline\n\n pipeline.adtsStream.pipe(pipeline.audioSegmentStream).pipe(pipeline.coalesceStream); // emit pmt info\n\n self.trigger('trackinfo', {\n hasAudio: !!audioTrack,\n hasVideo: !!videoTrack\n });\n }); // Re-emit any data coming from the coalesce stream to the outside world\n\n pipeline.coalesceStream.on('data', this.trigger.bind(this, 'data')); // Let the consumer know we have finished flushing the entire pipeline\n\n pipeline.coalesceStream.on('done', this.trigger.bind(this, 'done'));\n addPipelineLogRetriggers(this, pipeline);\n };\n this.setupTsPipeline = function () {\n var pipeline = {};\n this.transmuxPipeline_ = pipeline;\n pipeline.type = 'ts';\n pipeline.metadataStream = new m2ts.MetadataStream(); // set up the parsing pipeline\n\n pipeline.packetStream = new m2ts.TransportPacketStream();\n pipeline.parseStream = new m2ts.TransportParseStream();\n pipeline.elementaryStream = new m2ts.ElementaryStream();\n pipeline.timestampRolloverStream = new m2ts.TimestampRolloverStream();\n pipeline.adtsStream = new AdtsStream();\n pipeline.h264Stream = new H264Stream();\n pipeline.captionStream = new m2ts.CaptionStream(options);\n pipeline.coalesceStream = new CoalesceStream(options, pipeline.metadataStream);\n pipeline.headOfPipeline = pipeline.packetStream; // disassemble MPEG2-TS packets into elementary streams\n\n pipeline.packetStream.pipe(pipeline.parseStream).pipe(pipeline.elementaryStream).pipe(pipeline.timestampRolloverStream); // !!THIS ORDER IS IMPORTANT!!\n // demux the streams\n\n pipeline.timestampRolloverStream.pipe(pipeline.h264Stream);\n pipeline.timestampRolloverStream.pipe(pipeline.adtsStream);\n pipeline.timestampRolloverStream.pipe(pipeline.metadataStream).pipe(pipeline.coalesceStream); // Hook up CEA-608/708 caption stream\n\n pipeline.h264Stream.pipe(pipeline.captionStream).pipe(pipeline.coalesceStream);\n pipeline.elementaryStream.on('data', function (data) {\n var i;\n if (data.type === 'metadata') {\n i = data.tracks.length; // scan the tracks listed in the metadata\n\n while (i--) {\n if (!videoTrack && data.tracks[i].type === 'video') {\n videoTrack = data.tracks[i];\n videoTrack.timelineStartInfo.baseMediaDecodeTime = self.baseMediaDecodeTime;\n } else if (!audioTrack && data.tracks[i].type === 'audio') {\n audioTrack = data.tracks[i];\n audioTrack.timelineStartInfo.baseMediaDecodeTime = self.baseMediaDecodeTime;\n }\n } // hook up the video segment stream to the first track with h264 data\n\n if (videoTrack && !pipeline.videoSegmentStream) {\n pipeline.coalesceStream.numberOfTracks++;\n pipeline.videoSegmentStream = new VideoSegmentStream(videoTrack, options);\n pipeline.videoSegmentStream.on('log', self.getLogTrigger_('videoSegmentStream'));\n pipeline.videoSegmentStream.on('timelineStartInfo', function (timelineStartInfo) {\n // When video emits timelineStartInfo data after a flush, we forward that\n // info to the AudioSegmentStream, if it exists, because video timeline\n // data takes precedence. Do not do this if keepOriginalTimestamps is set,\n // because this is a particularly subtle form of timestamp alteration.\n if (audioTrack && !options.keepOriginalTimestamps) {\n audioTrack.timelineStartInfo = timelineStartInfo; // On the first segment we trim AAC frames that exist before the\n // very earliest DTS we have seen in video because Chrome will\n // interpret any video track with a baseMediaDecodeTime that is\n // non-zero as a gap.\n\n pipeline.audioSegmentStream.setEarliestDts(timelineStartInfo.dts - self.baseMediaDecodeTime);\n }\n });\n pipeline.videoSegmentStream.on('processedGopsInfo', self.trigger.bind(self, 'gopInfo'));\n pipeline.videoSegmentStream.on('segmentTimingInfo', self.trigger.bind(self, 'videoSegmentTimingInfo'));\n pipeline.videoSegmentStream.on('baseMediaDecodeTime', function (baseMediaDecodeTime) {\n if (audioTrack) {\n pipeline.audioSegmentStream.setVideoBaseMediaDecodeTime(baseMediaDecodeTime);\n }\n });\n pipeline.videoSegmentStream.on('timingInfo', self.trigger.bind(self, 'videoTimingInfo')); // Set up the final part of the video pipeline\n\n pipeline.h264Stream.pipe(pipeline.videoSegmentStream).pipe(pipeline.coalesceStream);\n }\n if (audioTrack && !pipeline.audioSegmentStream) {\n // hook up the audio segment stream to the first track with aac data\n pipeline.coalesceStream.numberOfTracks++;\n pipeline.audioSegmentStream = new AudioSegmentStream(audioTrack, options);\n pipeline.audioSegmentStream.on('log', self.getLogTrigger_('audioSegmentStream'));\n pipeline.audioSegmentStream.on('timingInfo', self.trigger.bind(self, 'audioTimingInfo'));\n pipeline.audioSegmentStream.on('segmentTimingInfo', self.trigger.bind(self, 'audioSegmentTimingInfo')); // Set up the final part of the audio pipeline\n\n pipeline.adtsStream.pipe(pipeline.audioSegmentStream).pipe(pipeline.coalesceStream);\n } // emit pmt info\n\n self.trigger('trackinfo', {\n hasAudio: !!audioTrack,\n hasVideo: !!videoTrack\n });\n }\n }); // Re-emit any data coming from the coalesce stream to the outside world\n\n pipeline.coalesceStream.on('data', this.trigger.bind(this, 'data'));\n pipeline.coalesceStream.on('id3Frame', function (id3Frame) {\n id3Frame.dispatchType = pipeline.metadataStream.dispatchType;\n self.trigger('id3Frame', id3Frame);\n });\n pipeline.coalesceStream.on('caption', this.trigger.bind(this, 'caption')); // Let the consumer know we have finished flushing the entire pipeline\n\n pipeline.coalesceStream.on('done', this.trigger.bind(this, 'done'));\n addPipelineLogRetriggers(this, pipeline);\n }; // hook up the segment streams once track metadata is delivered\n\n this.setBaseMediaDecodeTime = function (baseMediaDecodeTime) {\n var pipeline = this.transmuxPipeline_;\n if (!options.keepOriginalTimestamps) {\n this.baseMediaDecodeTime = baseMediaDecodeTime;\n }\n if (audioTrack) {\n audioTrack.timelineStartInfo.dts = undefined;\n audioTrack.timelineStartInfo.pts = undefined;\n trackDecodeInfo.clearDtsInfo(audioTrack);\n if (pipeline.audioTimestampRolloverStream) {\n pipeline.audioTimestampRolloverStream.discontinuity();\n }\n }\n if (videoTrack) {\n if (pipeline.videoSegmentStream) {\n pipeline.videoSegmentStream.gopCache_ = [];\n }\n videoTrack.timelineStartInfo.dts = undefined;\n videoTrack.timelineStartInfo.pts = undefined;\n trackDecodeInfo.clearDtsInfo(videoTrack);\n pipeline.captionStream.reset();\n }\n if (pipeline.timestampRolloverStream) {\n pipeline.timestampRolloverStream.discontinuity();\n }\n };\n this.setAudioAppendStart = function (timestamp) {\n if (audioTrack) {\n this.transmuxPipeline_.audioSegmentStream.setAudioAppendStart(timestamp);\n }\n };\n this.setRemux = function (val) {\n var pipeline = this.transmuxPipeline_;\n options.remux = val;\n if (pipeline && pipeline.coalesceStream) {\n pipeline.coalesceStream.setRemux(val);\n }\n };\n this.alignGopsWith = function (gopsToAlignWith) {\n if (videoTrack && this.transmuxPipeline_.videoSegmentStream) {\n this.transmuxPipeline_.videoSegmentStream.alignGopsWith(gopsToAlignWith);\n }\n };\n this.getLogTrigger_ = function (key) {\n var self = this;\n return function (event) {\n event.stream = key;\n self.trigger('log', event);\n };\n }; // feed incoming data to the front of the parsing pipeline\n\n this.push = function (data) {\n if (hasFlushed) {\n var isAac = isLikelyAacData(data);\n if (isAac && this.transmuxPipeline_.type !== 'aac') {\n this.setupAacPipeline();\n } else if (!isAac && this.transmuxPipeline_.type !== 'ts') {\n this.setupTsPipeline();\n }\n hasFlushed = false;\n }\n this.transmuxPipeline_.headOfPipeline.push(data);\n }; // flush any buffered data\n\n this.flush = function () {\n hasFlushed = true; // Start at the top of the pipeline and flush all pending work\n\n this.transmuxPipeline_.headOfPipeline.flush();\n };\n this.endTimeline = function () {\n this.transmuxPipeline_.headOfPipeline.endTimeline();\n };\n this.reset = function () {\n if (this.transmuxPipeline_.headOfPipeline) {\n this.transmuxPipeline_.headOfPipeline.reset();\n }\n }; // Caption data has to be reset when seeking outside buffered range\n\n this.resetCaptions = function () {\n if (this.transmuxPipeline_.captionStream) {\n this.transmuxPipeline_.captionStream.reset();\n }\n };\n };\n Transmuxer.prototype = new Stream();\n var transmuxer = {\n Transmuxer: Transmuxer,\n VideoSegmentStream: VideoSegmentStream,\n AudioSegmentStream: AudioSegmentStream,\n AUDIO_PROPERTIES: AUDIO_PROPERTIES,\n VIDEO_PROPERTIES: VIDEO_PROPERTIES,\n // exported for testing\n generateSegmentTimingInfo: generateSegmentTimingInfo\n };\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n */\n\n var toUnsigned$3 = function (value) {\n return value >>> 0;\n };\n var toHexString$1 = function (value) {\n return ('00' + value.toString(16)).slice(-2);\n };\n var bin = {\n toUnsigned: toUnsigned$3,\n toHexString: toHexString$1\n };\n var parseType$3 = function (buffer) {\n var result = '';\n result += String.fromCharCode(buffer[0]);\n result += String.fromCharCode(buffer[1]);\n result += String.fromCharCode(buffer[2]);\n result += String.fromCharCode(buffer[3]);\n return result;\n };\n var parseType_1 = parseType$3;\n var toUnsigned$2 = bin.toUnsigned;\n var parseType$2 = parseType_1;\n var findBox$2 = function (data, path) {\n var results = [],\n i,\n size,\n type,\n end,\n subresults;\n if (!path.length) {\n // short-circuit the search for empty paths\n return null;\n }\n for (i = 0; i < data.byteLength;) {\n size = toUnsigned$2(data[i] << 24 | data[i + 1] << 16 | data[i + 2] << 8 | data[i + 3]);\n type = parseType$2(data.subarray(i + 4, i + 8));\n end = size > 1 ? i + size : data.byteLength;\n if (type === path[0]) {\n if (path.length === 1) {\n // this is the end of the path and we've found the box we were\n // looking for\n results.push(data.subarray(i + 8, end));\n } else {\n // recursively search for the next box along the path\n subresults = findBox$2(data.subarray(i + 8, end), path.slice(1));\n if (subresults.length) {\n results = results.concat(subresults);\n }\n }\n }\n i = end;\n } // we've finished searching all of data\n\n return results;\n };\n var findBox_1 = findBox$2;\n var toUnsigned$1 = bin.toUnsigned;\n var getUint64$2 = numbers.getUint64;\n var tfdt = function (data) {\n var result = {\n version: data[0],\n flags: new Uint8Array(data.subarray(1, 4))\n };\n if (result.version === 1) {\n result.baseMediaDecodeTime = getUint64$2(data.subarray(4));\n } else {\n result.baseMediaDecodeTime = toUnsigned$1(data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7]);\n }\n return result;\n };\n var parseTfdt$2 = tfdt;\n var parseSampleFlags$1 = function (flags) {\n return {\n isLeading: (flags[0] & 0x0c) >>> 2,\n dependsOn: flags[0] & 0x03,\n isDependedOn: (flags[1] & 0xc0) >>> 6,\n hasRedundancy: (flags[1] & 0x30) >>> 4,\n paddingValue: (flags[1] & 0x0e) >>> 1,\n isNonSyncSample: flags[1] & 0x01,\n degradationPriority: flags[2] << 8 | flags[3]\n };\n };\n var parseSampleFlags_1 = parseSampleFlags$1;\n var parseSampleFlags = parseSampleFlags_1;\n var trun = function (data) {\n var result = {\n version: data[0],\n flags: new Uint8Array(data.subarray(1, 4)),\n samples: []\n },\n view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n // Flag interpretation\n dataOffsetPresent = result.flags[2] & 0x01,\n // compare with 2nd byte of 0x1\n firstSampleFlagsPresent = result.flags[2] & 0x04,\n // compare with 2nd byte of 0x4\n sampleDurationPresent = result.flags[1] & 0x01,\n // compare with 2nd byte of 0x100\n sampleSizePresent = result.flags[1] & 0x02,\n // compare with 2nd byte of 0x200\n sampleFlagsPresent = result.flags[1] & 0x04,\n // compare with 2nd byte of 0x400\n sampleCompositionTimeOffsetPresent = result.flags[1] & 0x08,\n // compare with 2nd byte of 0x800\n sampleCount = view.getUint32(4),\n offset = 8,\n sample;\n if (dataOffsetPresent) {\n // 32 bit signed integer\n result.dataOffset = view.getInt32(offset);\n offset += 4;\n } // Overrides the flags for the first sample only. The order of\n // optional values will be: duration, size, compositionTimeOffset\n\n if (firstSampleFlagsPresent && sampleCount) {\n sample = {\n flags: parseSampleFlags(data.subarray(offset, offset + 4))\n };\n offset += 4;\n if (sampleDurationPresent) {\n sample.duration = view.getUint32(offset);\n offset += 4;\n }\n if (sampleSizePresent) {\n sample.size = view.getUint32(offset);\n offset += 4;\n }\n if (sampleCompositionTimeOffsetPresent) {\n if (result.version === 1) {\n sample.compositionTimeOffset = view.getInt32(offset);\n } else {\n sample.compositionTimeOffset = view.getUint32(offset);\n }\n offset += 4;\n }\n result.samples.push(sample);\n sampleCount--;\n }\n while (sampleCount--) {\n sample = {};\n if (sampleDurationPresent) {\n sample.duration = view.getUint32(offset);\n offset += 4;\n }\n if (sampleSizePresent) {\n sample.size = view.getUint32(offset);\n offset += 4;\n }\n if (sampleFlagsPresent) {\n sample.flags = parseSampleFlags(data.subarray(offset, offset + 4));\n offset += 4;\n }\n if (sampleCompositionTimeOffsetPresent) {\n if (result.version === 1) {\n sample.compositionTimeOffset = view.getInt32(offset);\n } else {\n sample.compositionTimeOffset = view.getUint32(offset);\n }\n offset += 4;\n }\n result.samples.push(sample);\n }\n return result;\n };\n var parseTrun$2 = trun;\n var tfhd = function (data) {\n var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n result = {\n version: data[0],\n flags: new Uint8Array(data.subarray(1, 4)),\n trackId: view.getUint32(4)\n },\n baseDataOffsetPresent = result.flags[2] & 0x01,\n sampleDescriptionIndexPresent = result.flags[2] & 0x02,\n defaultSampleDurationPresent = result.flags[2] & 0x08,\n defaultSampleSizePresent = result.flags[2] & 0x10,\n defaultSampleFlagsPresent = result.flags[2] & 0x20,\n durationIsEmpty = result.flags[0] & 0x010000,\n defaultBaseIsMoof = result.flags[0] & 0x020000,\n i;\n i = 8;\n if (baseDataOffsetPresent) {\n i += 4; // truncate top 4 bytes\n // FIXME: should we read the full 64 bits?\n\n result.baseDataOffset = view.getUint32(12);\n i += 4;\n }\n if (sampleDescriptionIndexPresent) {\n result.sampleDescriptionIndex = view.getUint32(i);\n i += 4;\n }\n if (defaultSampleDurationPresent) {\n result.defaultSampleDuration = view.getUint32(i);\n i += 4;\n }\n if (defaultSampleSizePresent) {\n result.defaultSampleSize = view.getUint32(i);\n i += 4;\n }\n if (defaultSampleFlagsPresent) {\n result.defaultSampleFlags = view.getUint32(i);\n }\n if (durationIsEmpty) {\n result.durationIsEmpty = true;\n }\n if (!baseDataOffsetPresent && defaultBaseIsMoof) {\n result.baseDataOffsetIsMoof = true;\n }\n return result;\n };\n var parseTfhd$2 = tfhd;\n var win;\n if (typeof window !== \"undefined\") {\n win = window;\n } else if (typeof commonjsGlobal !== \"undefined\") {\n win = commonjsGlobal;\n } else if (typeof self !== \"undefined\") {\n win = self;\n } else {\n win = {};\n }\n var window_1 = win;\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * Reads in-band CEA-708 captions out of FMP4 segments.\n * @see https://en.wikipedia.org/wiki/CEA-708\n */\n\n var discardEmulationPreventionBytes = captionPacketParser.discardEmulationPreventionBytes;\n var CaptionStream = captionStream.CaptionStream;\n var findBox$1 = findBox_1;\n var parseTfdt$1 = parseTfdt$2;\n var parseTrun$1 = parseTrun$2;\n var parseTfhd$1 = parseTfhd$2;\n var window$2 = window_1;\n /**\n * Maps an offset in the mdat to a sample based on the the size of the samples.\n * Assumes that `parseSamples` has been called first.\n *\n * @param {Number} offset - The offset into the mdat\n * @param {Object[]} samples - An array of samples, parsed using `parseSamples`\n * @return {?Object} The matching sample, or null if no match was found.\n *\n * @see ISO-BMFF-12/2015, Section 8.8.8\n **/\n\n var mapToSample = function (offset, samples) {\n var approximateOffset = offset;\n for (var i = 0; i < samples.length; i++) {\n var sample = samples[i];\n if (approximateOffset < sample.size) {\n return sample;\n }\n approximateOffset -= sample.size;\n }\n return null;\n };\n /**\n * Finds SEI nal units contained in a Media Data Box.\n * Assumes that `parseSamples` has been called first.\n *\n * @param {Uint8Array} avcStream - The bytes of the mdat\n * @param {Object[]} samples - The samples parsed out by `parseSamples`\n * @param {Number} trackId - The trackId of this video track\n * @return {Object[]} seiNals - the parsed SEI NALUs found.\n * The contents of the seiNal should match what is expected by\n * CaptionStream.push (nalUnitType, size, data, escapedRBSP, pts, dts)\n *\n * @see ISO-BMFF-12/2015, Section 8.1.1\n * @see Rec. ITU-T H.264, 7.3.2.3.1\n **/\n\n var findSeiNals = function (avcStream, samples, trackId) {\n var avcView = new DataView(avcStream.buffer, avcStream.byteOffset, avcStream.byteLength),\n result = {\n logs: [],\n seiNals: []\n },\n seiNal,\n i,\n length,\n lastMatchedSample;\n for (i = 0; i + 4 < avcStream.length; i += length) {\n length = avcView.getUint32(i);\n i += 4; // Bail if this doesn't appear to be an H264 stream\n\n if (length <= 0) {\n continue;\n }\n switch (avcStream[i] & 0x1F) {\n case 0x06:\n var data = avcStream.subarray(i + 1, i + 1 + length);\n var matchingSample = mapToSample(i, samples);\n seiNal = {\n nalUnitType: 'sei_rbsp',\n size: length,\n data: data,\n escapedRBSP: discardEmulationPreventionBytes(data),\n trackId: trackId\n };\n if (matchingSample) {\n seiNal.pts = matchingSample.pts;\n seiNal.dts = matchingSample.dts;\n lastMatchedSample = matchingSample;\n } else if (lastMatchedSample) {\n // If a matching sample cannot be found, use the last\n // sample's values as they should be as close as possible\n seiNal.pts = lastMatchedSample.pts;\n seiNal.dts = lastMatchedSample.dts;\n } else {\n result.logs.push({\n level: 'warn',\n message: 'We\\'ve encountered a nal unit without data at ' + i + ' for trackId ' + trackId + '. See mux.js#223.'\n });\n break;\n }\n result.seiNals.push(seiNal);\n break;\n }\n }\n return result;\n };\n /**\n * Parses sample information out of Track Run Boxes and calculates\n * the absolute presentation and decode timestamps of each sample.\n *\n * @param {Array} truns - The Trun Run boxes to be parsed\n * @param {Number|BigInt} baseMediaDecodeTime - base media decode time from tfdt\n @see ISO-BMFF-12/2015, Section 8.8.12\n * @param {Object} tfhd - The parsed Track Fragment Header\n * @see inspect.parseTfhd\n * @return {Object[]} the parsed samples\n *\n * @see ISO-BMFF-12/2015, Section 8.8.8\n **/\n\n var parseSamples = function (truns, baseMediaDecodeTime, tfhd) {\n var currentDts = baseMediaDecodeTime;\n var defaultSampleDuration = tfhd.defaultSampleDuration || 0;\n var defaultSampleSize = tfhd.defaultSampleSize || 0;\n var trackId = tfhd.trackId;\n var allSamples = [];\n truns.forEach(function (trun) {\n // Note: We currently do not parse the sample table as well\n // as the trun. It's possible some sources will require this.\n // moov > trak > mdia > minf > stbl\n var trackRun = parseTrun$1(trun);\n var samples = trackRun.samples;\n samples.forEach(function (sample) {\n if (sample.duration === undefined) {\n sample.duration = defaultSampleDuration;\n }\n if (sample.size === undefined) {\n sample.size = defaultSampleSize;\n }\n sample.trackId = trackId;\n sample.dts = currentDts;\n if (sample.compositionTimeOffset === undefined) {\n sample.compositionTimeOffset = 0;\n }\n if (typeof currentDts === 'bigint') {\n sample.pts = currentDts + window$2.BigInt(sample.compositionTimeOffset);\n currentDts += window$2.BigInt(sample.duration);\n } else {\n sample.pts = currentDts + sample.compositionTimeOffset;\n currentDts += sample.duration;\n }\n });\n allSamples = allSamples.concat(samples);\n });\n return allSamples;\n };\n /**\n * Parses out caption nals from an FMP4 segment's video tracks.\n *\n * @param {Uint8Array} segment - The bytes of a single segment\n * @param {Number} videoTrackId - The trackId of a video track in the segment\n * @return {Object.} A mapping of video trackId to\n * a list of seiNals found in that track\n **/\n\n var parseCaptionNals = function (segment, videoTrackId) {\n // To get the samples\n var trafs = findBox$1(segment, ['moof', 'traf']); // To get SEI NAL units\n\n var mdats = findBox$1(segment, ['mdat']);\n var captionNals = {};\n var mdatTrafPairs = []; // Pair up each traf with a mdat as moofs and mdats are in pairs\n\n mdats.forEach(function (mdat, index) {\n var matchingTraf = trafs[index];\n mdatTrafPairs.push({\n mdat: mdat,\n traf: matchingTraf\n });\n });\n mdatTrafPairs.forEach(function (pair) {\n var mdat = pair.mdat;\n var traf = pair.traf;\n var tfhd = findBox$1(traf, ['tfhd']); // Exactly 1 tfhd per traf\n\n var headerInfo = parseTfhd$1(tfhd[0]);\n var trackId = headerInfo.trackId;\n var tfdt = findBox$1(traf, ['tfdt']); // Either 0 or 1 tfdt per traf\n\n var baseMediaDecodeTime = tfdt.length > 0 ? parseTfdt$1(tfdt[0]).baseMediaDecodeTime : 0;\n var truns = findBox$1(traf, ['trun']);\n var samples;\n var result; // Only parse video data for the chosen video track\n\n if (videoTrackId === trackId && truns.length > 0) {\n samples = parseSamples(truns, baseMediaDecodeTime, headerInfo);\n result = findSeiNals(mdat, samples, trackId);\n if (!captionNals[trackId]) {\n captionNals[trackId] = {\n seiNals: [],\n logs: []\n };\n }\n captionNals[trackId].seiNals = captionNals[trackId].seiNals.concat(result.seiNals);\n captionNals[trackId].logs = captionNals[trackId].logs.concat(result.logs);\n }\n });\n return captionNals;\n };\n /**\n * Parses out inband captions from an MP4 container and returns\n * caption objects that can be used by WebVTT and the TextTrack API.\n * @see https://developer.mozilla.org/en-US/docs/Web/API/VTTCue\n * @see https://developer.mozilla.org/en-US/docs/Web/API/TextTrack\n * Assumes that `probe.getVideoTrackIds` and `probe.timescale` have been called first\n *\n * @param {Uint8Array} segment - The fmp4 segment containing embedded captions\n * @param {Number} trackId - The id of the video track to parse\n * @param {Number} timescale - The timescale for the video track from the init segment\n *\n * @return {?Object[]} parsedCaptions - A list of captions or null if no video tracks\n * @return {Number} parsedCaptions[].startTime - The time to show the caption in seconds\n * @return {Number} parsedCaptions[].endTime - The time to stop showing the caption in seconds\n * @return {Object[]} parsedCaptions[].content - A list of individual caption segments\n * @return {String} parsedCaptions[].content.text - The visible content of the caption segment\n * @return {Number} parsedCaptions[].content.line - The line height from 1-15 for positioning of the caption segment\n * @return {Number} parsedCaptions[].content.position - The column indent percentage for cue positioning from 10-80\n **/\n\n var parseEmbeddedCaptions = function (segment, trackId, timescale) {\n var captionNals; // the ISO-BMFF spec says that trackId can't be zero, but there's some broken content out there\n\n if (trackId === null) {\n return null;\n }\n captionNals = parseCaptionNals(segment, trackId);\n var trackNals = captionNals[trackId] || {};\n return {\n seiNals: trackNals.seiNals,\n logs: trackNals.logs,\n timescale: timescale\n };\n };\n /**\n * Converts SEI NALUs into captions that can be used by video.js\n **/\n\n var CaptionParser = function () {\n var isInitialized = false;\n var captionStream; // Stores segments seen before trackId and timescale are set\n\n var segmentCache; // Stores video track ID of the track being parsed\n\n var trackId; // Stores the timescale of the track being parsed\n\n var timescale; // Stores captions parsed so far\n\n var parsedCaptions; // Stores whether we are receiving partial data or not\n\n var parsingPartial;\n /**\n * A method to indicate whether a CaptionParser has been initalized\n * @returns {Boolean}\n **/\n\n this.isInitialized = function () {\n return isInitialized;\n };\n /**\n * Initializes the underlying CaptionStream, SEI NAL parsing\n * and management, and caption collection\n **/\n\n this.init = function (options) {\n captionStream = new CaptionStream();\n isInitialized = true;\n parsingPartial = options ? options.isPartial : false; // Collect dispatched captions\n\n captionStream.on('data', function (event) {\n // Convert to seconds in the source's timescale\n event.startTime = event.startPts / timescale;\n event.endTime = event.endPts / timescale;\n parsedCaptions.captions.push(event);\n parsedCaptions.captionStreams[event.stream] = true;\n });\n captionStream.on('log', function (log) {\n parsedCaptions.logs.push(log);\n });\n };\n /**\n * Determines if a new video track will be selected\n * or if the timescale changed\n * @return {Boolean}\n **/\n\n this.isNewInit = function (videoTrackIds, timescales) {\n if (videoTrackIds && videoTrackIds.length === 0 || timescales && typeof timescales === 'object' && Object.keys(timescales).length === 0) {\n return false;\n }\n return trackId !== videoTrackIds[0] || timescale !== timescales[trackId];\n };\n /**\n * Parses out SEI captions and interacts with underlying\n * CaptionStream to return dispatched captions\n *\n * @param {Uint8Array} segment - The fmp4 segment containing embedded captions\n * @param {Number[]} videoTrackIds - A list of video tracks found in the init segment\n * @param {Object.} timescales - The timescales found in the init segment\n * @see parseEmbeddedCaptions\n * @see m2ts/caption-stream.js\n **/\n\n this.parse = function (segment, videoTrackIds, timescales) {\n var parsedData;\n if (!this.isInitialized()) {\n return null; // This is not likely to be a video segment\n } else if (!videoTrackIds || !timescales) {\n return null;\n } else if (this.isNewInit(videoTrackIds, timescales)) {\n // Use the first video track only as there is no\n // mechanism to switch to other video tracks\n trackId = videoTrackIds[0];\n timescale = timescales[trackId]; // If an init segment has not been seen yet, hold onto segment\n // data until we have one.\n // the ISO-BMFF spec says that trackId can't be zero, but there's some broken content out there\n } else if (trackId === null || !timescale) {\n segmentCache.push(segment);\n return null;\n } // Now that a timescale and trackId is set, parse cached segments\n\n while (segmentCache.length > 0) {\n var cachedSegment = segmentCache.shift();\n this.parse(cachedSegment, videoTrackIds, timescales);\n }\n parsedData = parseEmbeddedCaptions(segment, trackId, timescale);\n if (parsedData && parsedData.logs) {\n parsedCaptions.logs = parsedCaptions.logs.concat(parsedData.logs);\n }\n if (parsedData === null || !parsedData.seiNals) {\n if (parsedCaptions.logs.length) {\n return {\n logs: parsedCaptions.logs,\n captions: [],\n captionStreams: []\n };\n }\n return null;\n }\n this.pushNals(parsedData.seiNals); // Force the parsed captions to be dispatched\n\n this.flushStream();\n return parsedCaptions;\n };\n /**\n * Pushes SEI NALUs onto CaptionStream\n * @param {Object[]} nals - A list of SEI nals parsed using `parseCaptionNals`\n * Assumes that `parseCaptionNals` has been called first\n * @see m2ts/caption-stream.js\n **/\n\n this.pushNals = function (nals) {\n if (!this.isInitialized() || !nals || nals.length === 0) {\n return null;\n }\n nals.forEach(function (nal) {\n captionStream.push(nal);\n });\n };\n /**\n * Flushes underlying CaptionStream to dispatch processed, displayable captions\n * @see m2ts/caption-stream.js\n **/\n\n this.flushStream = function () {\n if (!this.isInitialized()) {\n return null;\n }\n if (!parsingPartial) {\n captionStream.flush();\n } else {\n captionStream.partialFlush();\n }\n };\n /**\n * Reset caption buckets for new data\n **/\n\n this.clearParsedCaptions = function () {\n parsedCaptions.captions = [];\n parsedCaptions.captionStreams = {};\n parsedCaptions.logs = [];\n };\n /**\n * Resets underlying CaptionStream\n * @see m2ts/caption-stream.js\n **/\n\n this.resetCaptionStream = function () {\n if (!this.isInitialized()) {\n return null;\n }\n captionStream.reset();\n };\n /**\n * Convenience method to clear all captions flushed from the\n * CaptionStream and still being parsed\n * @see m2ts/caption-stream.js\n **/\n\n this.clearAllCaptions = function () {\n this.clearParsedCaptions();\n this.resetCaptionStream();\n };\n /**\n * Reset caption parser\n **/\n\n this.reset = function () {\n segmentCache = [];\n trackId = null;\n timescale = null;\n if (!parsedCaptions) {\n parsedCaptions = {\n captions: [],\n // CC1, CC2, CC3, CC4\n captionStreams: {},\n logs: []\n };\n } else {\n this.clearParsedCaptions();\n }\n this.resetCaptionStream();\n };\n this.reset();\n };\n var captionParser = CaptionParser;\n /**\n * Returns the first string in the data array ending with a null char '\\0'\n * @param {UInt8} data \n * @returns the string with the null char\n */\n\n var uint8ToCString$1 = function (data) {\n var index = 0;\n var curChar = String.fromCharCode(data[index]);\n var retString = '';\n while (curChar !== '\\0') {\n retString += curChar;\n index++;\n curChar = String.fromCharCode(data[index]);\n } // Add nullChar\n\n retString += curChar;\n return retString;\n };\n var string = {\n uint8ToCString: uint8ToCString$1\n };\n var uint8ToCString = string.uint8ToCString;\n var getUint64$1 = numbers.getUint64;\n /**\n * Based on: ISO/IEC 23009 Section: 5.10.3.3\n * References:\n * https://dashif-documents.azurewebsites.net/Events/master/event.html#emsg-format\n * https://aomediacodec.github.io/id3-emsg/\n * \n * Takes emsg box data as a uint8 array and returns a emsg box object\n * @param {UInt8Array} boxData data from emsg box\n * @returns A parsed emsg box object\n */\n\n var parseEmsgBox = function (boxData) {\n // version + flags\n var offset = 4;\n var version = boxData[0];\n var scheme_id_uri, value, timescale, presentation_time, presentation_time_delta, event_duration, id, message_data;\n if (version === 0) {\n scheme_id_uri = uint8ToCString(boxData.subarray(offset));\n offset += scheme_id_uri.length;\n value = uint8ToCString(boxData.subarray(offset));\n offset += value.length;\n var dv = new DataView(boxData.buffer);\n timescale = dv.getUint32(offset);\n offset += 4;\n presentation_time_delta = dv.getUint32(offset);\n offset += 4;\n event_duration = dv.getUint32(offset);\n offset += 4;\n id = dv.getUint32(offset);\n offset += 4;\n } else if (version === 1) {\n var dv = new DataView(boxData.buffer);\n timescale = dv.getUint32(offset);\n offset += 4;\n presentation_time = getUint64$1(boxData.subarray(offset));\n offset += 8;\n event_duration = dv.getUint32(offset);\n offset += 4;\n id = dv.getUint32(offset);\n offset += 4;\n scheme_id_uri = uint8ToCString(boxData.subarray(offset));\n offset += scheme_id_uri.length;\n value = uint8ToCString(boxData.subarray(offset));\n offset += value.length;\n }\n message_data = new Uint8Array(boxData.subarray(offset, boxData.byteLength));\n var emsgBox = {\n scheme_id_uri,\n value,\n // if timescale is undefined or 0 set to 1 \n timescale: timescale ? timescale : 1,\n presentation_time,\n presentation_time_delta,\n event_duration,\n id,\n message_data\n };\n return isValidEmsgBox(version, emsgBox) ? emsgBox : undefined;\n };\n /**\n * Scales a presentation time or time delta with an offset with a provided timescale\n * @param {number} presentationTime \n * @param {number} timescale \n * @param {number} timeDelta \n * @param {number} offset \n * @returns the scaled time as a number\n */\n\n var scaleTime = function (presentationTime, timescale, timeDelta, offset) {\n return presentationTime || presentationTime === 0 ? presentationTime / timescale : offset + timeDelta / timescale;\n };\n /**\n * Checks the emsg box data for validity based on the version\n * @param {number} version of the emsg box to validate\n * @param {Object} emsg the emsg data to validate\n * @returns if the box is valid as a boolean\n */\n\n var isValidEmsgBox = function (version, emsg) {\n var hasScheme = emsg.scheme_id_uri !== '\\0';\n var isValidV0Box = version === 0 && isDefined(emsg.presentation_time_delta) && hasScheme;\n var isValidV1Box = version === 1 && isDefined(emsg.presentation_time) && hasScheme; // Only valid versions of emsg are 0 and 1\n\n return !(version > 1) && isValidV0Box || isValidV1Box;\n }; // Utility function to check if an object is defined\n\n var isDefined = function (data) {\n return data !== undefined || data !== null;\n };\n var emsg$1 = {\n parseEmsgBox: parseEmsgBox,\n scaleTime: scaleTime\n };\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * Utilities to detect basic properties and metadata about MP4s.\n */\n\n var toUnsigned = bin.toUnsigned;\n var toHexString = bin.toHexString;\n var findBox = findBox_1;\n var parseType$1 = parseType_1;\n var emsg = emsg$1;\n var parseTfhd = parseTfhd$2;\n var parseTrun = parseTrun$2;\n var parseTfdt = parseTfdt$2;\n var getUint64 = numbers.getUint64;\n var timescale, startTime, compositionStartTime, getVideoTrackIds, getTracks, getTimescaleFromMediaHeader, getEmsgID3;\n var window$1 = window_1;\n var parseId3Frames = parseId3.parseId3Frames;\n /**\n * Parses an MP4 initialization segment and extracts the timescale\n * values for any declared tracks. Timescale values indicate the\n * number of clock ticks per second to assume for time-based values\n * elsewhere in the MP4.\n *\n * To determine the start time of an MP4, you need two pieces of\n * information: the timescale unit and the earliest base media decode\n * time. Multiple timescales can be specified within an MP4 but the\n * base media decode time is always expressed in the timescale from\n * the media header box for the track:\n * ```\n * moov > trak > mdia > mdhd.timescale\n * ```\n * @param init {Uint8Array} the bytes of the init segment\n * @return {object} a hash of track ids to timescale values or null if\n * the init segment is malformed.\n */\n\n timescale = function (init) {\n var result = {},\n traks = findBox(init, ['moov', 'trak']); // mdhd timescale\n\n return traks.reduce(function (result, trak) {\n var tkhd, version, index, id, mdhd;\n tkhd = findBox(trak, ['tkhd'])[0];\n if (!tkhd) {\n return null;\n }\n version = tkhd[0];\n index = version === 0 ? 12 : 20;\n id = toUnsigned(tkhd[index] << 24 | tkhd[index + 1] << 16 | tkhd[index + 2] << 8 | tkhd[index + 3]);\n mdhd = findBox(trak, ['mdia', 'mdhd'])[0];\n if (!mdhd) {\n return null;\n }\n version = mdhd[0];\n index = version === 0 ? 12 : 20;\n result[id] = toUnsigned(mdhd[index] << 24 | mdhd[index + 1] << 16 | mdhd[index + 2] << 8 | mdhd[index + 3]);\n return result;\n }, result);\n };\n /**\n * Determine the base media decode start time, in seconds, for an MP4\n * fragment. If multiple fragments are specified, the earliest time is\n * returned.\n *\n * The base media decode time can be parsed from track fragment\n * metadata:\n * ```\n * moof > traf > tfdt.baseMediaDecodeTime\n * ```\n * It requires the timescale value from the mdhd to interpret.\n *\n * @param timescale {object} a hash of track ids to timescale values.\n * @return {number} the earliest base media decode start time for the\n * fragment, in seconds\n */\n\n startTime = function (timescale, fragment) {\n var trafs; // we need info from two childrend of each track fragment box\n\n trafs = findBox(fragment, ['moof', 'traf']); // determine the start times for each track\n\n var lowestTime = trafs.reduce(function (acc, traf) {\n var tfhd = findBox(traf, ['tfhd'])[0]; // get the track id from the tfhd\n\n var id = toUnsigned(tfhd[4] << 24 | tfhd[5] << 16 | tfhd[6] << 8 | tfhd[7]); // assume a 90kHz clock if no timescale was specified\n\n var scale = timescale[id] || 90e3; // get the base media decode time from the tfdt\n\n var tfdt = findBox(traf, ['tfdt'])[0];\n var dv = new DataView(tfdt.buffer, tfdt.byteOffset, tfdt.byteLength);\n var baseTime; // version 1 is 64 bit\n\n if (tfdt[0] === 1) {\n baseTime = getUint64(tfdt.subarray(4, 12));\n } else {\n baseTime = dv.getUint32(4);\n } // convert base time to seconds if it is a valid number.\n\n let seconds;\n if (typeof baseTime === 'bigint') {\n seconds = baseTime / window$1.BigInt(scale);\n } else if (typeof baseTime === 'number' && !isNaN(baseTime)) {\n seconds = baseTime / scale;\n }\n if (seconds < Number.MAX_SAFE_INTEGER) {\n seconds = Number(seconds);\n }\n if (seconds < acc) {\n acc = seconds;\n }\n return acc;\n }, Infinity);\n return typeof lowestTime === 'bigint' || isFinite(lowestTime) ? lowestTime : 0;\n };\n /**\n * Determine the composition start, in seconds, for an MP4\n * fragment.\n *\n * The composition start time of a fragment can be calculated using the base\n * media decode time, composition time offset, and timescale, as follows:\n *\n * compositionStartTime = (baseMediaDecodeTime + compositionTimeOffset) / timescale\n *\n * All of the aforementioned information is contained within a media fragment's\n * `traf` box, except for timescale info, which comes from the initialization\n * segment, so a track id (also contained within a `traf`) is also necessary to\n * associate it with a timescale\n *\n *\n * @param timescales {object} - a hash of track ids to timescale values.\n * @param fragment {Unit8Array} - the bytes of a media segment\n * @return {number} the composition start time for the fragment, in seconds\n **/\n\n compositionStartTime = function (timescales, fragment) {\n var trafBoxes = findBox(fragment, ['moof', 'traf']);\n var baseMediaDecodeTime = 0;\n var compositionTimeOffset = 0;\n var trackId;\n if (trafBoxes && trafBoxes.length) {\n // The spec states that track run samples contained within a `traf` box are contiguous, but\n // it does not explicitly state whether the `traf` boxes themselves are contiguous.\n // We will assume that they are, so we only need the first to calculate start time.\n var tfhd = findBox(trafBoxes[0], ['tfhd'])[0];\n var trun = findBox(trafBoxes[0], ['trun'])[0];\n var tfdt = findBox(trafBoxes[0], ['tfdt'])[0];\n if (tfhd) {\n var parsedTfhd = parseTfhd(tfhd);\n trackId = parsedTfhd.trackId;\n }\n if (tfdt) {\n var parsedTfdt = parseTfdt(tfdt);\n baseMediaDecodeTime = parsedTfdt.baseMediaDecodeTime;\n }\n if (trun) {\n var parsedTrun = parseTrun(trun);\n if (parsedTrun.samples && parsedTrun.samples.length) {\n compositionTimeOffset = parsedTrun.samples[0].compositionTimeOffset || 0;\n }\n }\n } // Get timescale for this specific track. Assume a 90kHz clock if no timescale was\n // specified.\n\n var timescale = timescales[trackId] || 90e3; // return the composition start time, in seconds\n\n if (typeof baseMediaDecodeTime === 'bigint') {\n compositionTimeOffset = window$1.BigInt(compositionTimeOffset);\n timescale = window$1.BigInt(timescale);\n }\n var result = (baseMediaDecodeTime + compositionTimeOffset) / timescale;\n if (typeof result === 'bigint' && result < Number.MAX_SAFE_INTEGER) {\n result = Number(result);\n }\n return result;\n };\n /**\n * Find the trackIds of the video tracks in this source.\n * Found by parsing the Handler Reference and Track Header Boxes:\n * moov > trak > mdia > hdlr\n * moov > trak > tkhd\n *\n * @param {Uint8Array} init - The bytes of the init segment for this source\n * @return {Number[]} A list of trackIds\n *\n * @see ISO-BMFF-12/2015, Section 8.4.3\n **/\n\n getVideoTrackIds = function (init) {\n var traks = findBox(init, ['moov', 'trak']);\n var videoTrackIds = [];\n traks.forEach(function (trak) {\n var hdlrs = findBox(trak, ['mdia', 'hdlr']);\n var tkhds = findBox(trak, ['tkhd']);\n hdlrs.forEach(function (hdlr, index) {\n var handlerType = parseType$1(hdlr.subarray(8, 12));\n var tkhd = tkhds[index];\n var view;\n var version;\n var trackId;\n if (handlerType === 'vide') {\n view = new DataView(tkhd.buffer, tkhd.byteOffset, tkhd.byteLength);\n version = view.getUint8(0);\n trackId = version === 0 ? view.getUint32(12) : view.getUint32(20);\n videoTrackIds.push(trackId);\n }\n });\n });\n return videoTrackIds;\n };\n getTimescaleFromMediaHeader = function (mdhd) {\n // mdhd is a FullBox, meaning it will have its own version as the first byte\n var version = mdhd[0];\n var index = version === 0 ? 12 : 20;\n return toUnsigned(mdhd[index] << 24 | mdhd[index + 1] << 16 | mdhd[index + 2] << 8 | mdhd[index + 3]);\n };\n /**\n * Get all the video, audio, and hint tracks from a non fragmented\n * mp4 segment\n */\n\n getTracks = function (init) {\n var traks = findBox(init, ['moov', 'trak']);\n var tracks = [];\n traks.forEach(function (trak) {\n var track = {};\n var tkhd = findBox(trak, ['tkhd'])[0];\n var view, tkhdVersion; // id\n\n if (tkhd) {\n view = new DataView(tkhd.buffer, tkhd.byteOffset, tkhd.byteLength);\n tkhdVersion = view.getUint8(0);\n track.id = tkhdVersion === 0 ? view.getUint32(12) : view.getUint32(20);\n }\n var hdlr = findBox(trak, ['mdia', 'hdlr'])[0]; // type\n\n if (hdlr) {\n var type = parseType$1(hdlr.subarray(8, 12));\n if (type === 'vide') {\n track.type = 'video';\n } else if (type === 'soun') {\n track.type = 'audio';\n } else {\n track.type = type;\n }\n } // codec\n\n var stsd = findBox(trak, ['mdia', 'minf', 'stbl', 'stsd'])[0];\n if (stsd) {\n var sampleDescriptions = stsd.subarray(8); // gives the codec type string\n\n track.codec = parseType$1(sampleDescriptions.subarray(4, 8));\n var codecBox = findBox(sampleDescriptions, [track.codec])[0];\n var codecConfig, codecConfigType;\n if (codecBox) {\n // https://tools.ietf.org/html/rfc6381#section-3.3\n if (/^[asm]vc[1-9]$/i.test(track.codec)) {\n // we don't need anything but the \"config\" parameter of the\n // avc1 codecBox\n codecConfig = codecBox.subarray(78);\n codecConfigType = parseType$1(codecConfig.subarray(4, 8));\n if (codecConfigType === 'avcC' && codecConfig.length > 11) {\n track.codec += '.'; // left padded with zeroes for single digit hex\n // profile idc\n\n track.codec += toHexString(codecConfig[9]); // the byte containing the constraint_set flags\n\n track.codec += toHexString(codecConfig[10]); // level idc\n\n track.codec += toHexString(codecConfig[11]);\n } else {\n // TODO: show a warning that we couldn't parse the codec\n // and are using the default\n track.codec = 'avc1.4d400d';\n }\n } else if (/^mp4[a,v]$/i.test(track.codec)) {\n // we do not need anything but the streamDescriptor of the mp4a codecBox\n codecConfig = codecBox.subarray(28);\n codecConfigType = parseType$1(codecConfig.subarray(4, 8));\n if (codecConfigType === 'esds' && codecConfig.length > 20 && codecConfig[19] !== 0) {\n track.codec += '.' + toHexString(codecConfig[19]); // this value is only a single digit\n\n track.codec += '.' + toHexString(codecConfig[20] >>> 2 & 0x3f).replace(/^0/, '');\n } else {\n // TODO: show a warning that we couldn't parse the codec\n // and are using the default\n track.codec = 'mp4a.40.2';\n }\n } else {\n // flac, opus, etc\n track.codec = track.codec.toLowerCase();\n }\n }\n }\n var mdhd = findBox(trak, ['mdia', 'mdhd'])[0];\n if (mdhd) {\n track.timescale = getTimescaleFromMediaHeader(mdhd);\n }\n tracks.push(track);\n });\n return tracks;\n };\n /**\n * Returns an array of emsg ID3 data from the provided segmentData.\n * An offset can also be provided as the Latest Arrival Time to calculate \n * the Event Start Time of v0 EMSG boxes. \n * See: https://dashif-documents.azurewebsites.net/Events/master/event.html#Inband-event-timing\n * \n * @param {Uint8Array} segmentData the segment byte array.\n * @param {number} offset the segment start time or Latest Arrival Time, \n * @return {Object[]} an array of ID3 parsed from EMSG boxes\n */\n\n getEmsgID3 = function (segmentData, offset = 0) {\n var emsgBoxes = findBox(segmentData, ['emsg']);\n return emsgBoxes.map(data => {\n var parsedBox = emsg.parseEmsgBox(new Uint8Array(data));\n var parsedId3Frames = parseId3Frames(parsedBox.message_data);\n return {\n cueTime: emsg.scaleTime(parsedBox.presentation_time, parsedBox.timescale, parsedBox.presentation_time_delta, offset),\n duration: emsg.scaleTime(parsedBox.event_duration, parsedBox.timescale),\n frames: parsedId3Frames\n };\n });\n };\n var probe$2 = {\n // export mp4 inspector's findBox and parseType for backwards compatibility\n findBox: findBox,\n parseType: parseType$1,\n timescale: timescale,\n startTime: startTime,\n compositionStartTime: compositionStartTime,\n videoTrackIds: getVideoTrackIds,\n tracks: getTracks,\n getTimescaleFromMediaHeader: getTimescaleFromMediaHeader,\n getEmsgID3: getEmsgID3\n };\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * Utilities to detect basic properties and metadata about TS Segments.\n */\n\n var StreamTypes$1 = streamTypes;\n var parsePid = function (packet) {\n var pid = packet[1] & 0x1f;\n pid <<= 8;\n pid |= packet[2];\n return pid;\n };\n var parsePayloadUnitStartIndicator = function (packet) {\n return !!(packet[1] & 0x40);\n };\n var parseAdaptionField = function (packet) {\n var offset = 0; // if an adaption field is present, its length is specified by the\n // fifth byte of the TS packet header. The adaptation field is\n // used to add stuffing to PES packets that don't fill a complete\n // TS packet, and to specify some forms of timing and control data\n // that we do not currently use.\n\n if ((packet[3] & 0x30) >>> 4 > 0x01) {\n offset += packet[4] + 1;\n }\n return offset;\n };\n var parseType = function (packet, pmtPid) {\n var pid = parsePid(packet);\n if (pid === 0) {\n return 'pat';\n } else if (pid === pmtPid) {\n return 'pmt';\n } else if (pmtPid) {\n return 'pes';\n }\n return null;\n };\n var parsePat = function (packet) {\n var pusi = parsePayloadUnitStartIndicator(packet);\n var offset = 4 + parseAdaptionField(packet);\n if (pusi) {\n offset += packet[offset] + 1;\n }\n return (packet[offset + 10] & 0x1f) << 8 | packet[offset + 11];\n };\n var parsePmt = function (packet) {\n var programMapTable = {};\n var pusi = parsePayloadUnitStartIndicator(packet);\n var payloadOffset = 4 + parseAdaptionField(packet);\n if (pusi) {\n payloadOffset += packet[payloadOffset] + 1;\n } // PMTs can be sent ahead of the time when they should actually\n // take effect. We don't believe this should ever be the case\n // for HLS but we'll ignore \"forward\" PMT declarations if we see\n // them. Future PMT declarations have the current_next_indicator\n // set to zero.\n\n if (!(packet[payloadOffset + 5] & 0x01)) {\n return;\n }\n var sectionLength, tableEnd, programInfoLength; // the mapping table ends at the end of the current section\n\n sectionLength = (packet[payloadOffset + 1] & 0x0f) << 8 | packet[payloadOffset + 2];\n tableEnd = 3 + sectionLength - 4; // to determine where the table is, we have to figure out how\n // long the program info descriptors are\n\n programInfoLength = (packet[payloadOffset + 10] & 0x0f) << 8 | packet[payloadOffset + 11]; // advance the offset to the first entry in the mapping table\n\n var offset = 12 + programInfoLength;\n while (offset < tableEnd) {\n var i = payloadOffset + offset; // add an entry that maps the elementary_pid to the stream_type\n\n programMapTable[(packet[i + 1] & 0x1F) << 8 | packet[i + 2]] = packet[i]; // move to the next table entry\n // skip past the elementary stream descriptors, if present\n\n offset += ((packet[i + 3] & 0x0F) << 8 | packet[i + 4]) + 5;\n }\n return programMapTable;\n };\n var parsePesType = function (packet, programMapTable) {\n var pid = parsePid(packet);\n var type = programMapTable[pid];\n switch (type) {\n case StreamTypes$1.H264_STREAM_TYPE:\n return 'video';\n case StreamTypes$1.ADTS_STREAM_TYPE:\n return 'audio';\n case StreamTypes$1.METADATA_STREAM_TYPE:\n return 'timed-metadata';\n default:\n return null;\n }\n };\n var parsePesTime = function (packet) {\n var pusi = parsePayloadUnitStartIndicator(packet);\n if (!pusi) {\n return null;\n }\n var offset = 4 + parseAdaptionField(packet);\n if (offset >= packet.byteLength) {\n // From the H 222.0 MPEG-TS spec\n // \"For transport stream packets carrying PES packets, stuffing is needed when there\n // is insufficient PES packet data to completely fill the transport stream packet\n // payload bytes. Stuffing is accomplished by defining an adaptation field longer than\n // the sum of the lengths of the data elements in it, so that the payload bytes\n // remaining after the adaptation field exactly accommodates the available PES packet\n // data.\"\n //\n // If the offset is >= the length of the packet, then the packet contains no data\n // and instead is just adaption field stuffing bytes\n return null;\n }\n var pes = null;\n var ptsDtsFlags; // PES packets may be annotated with a PTS value, or a PTS value\n // and a DTS value. Determine what combination of values is\n // available to work with.\n\n ptsDtsFlags = packet[offset + 7]; // PTS and DTS are normally stored as a 33-bit number. Javascript\n // performs all bitwise operations on 32-bit integers but javascript\n // supports a much greater range (52-bits) of integer using standard\n // mathematical operations.\n // We construct a 31-bit value using bitwise operators over the 31\n // most significant bits and then multiply by 4 (equal to a left-shift\n // of 2) before we add the final 2 least significant bits of the\n // timestamp (equal to an OR.)\n\n if (ptsDtsFlags & 0xC0) {\n pes = {}; // the PTS and DTS are not written out directly. For information\n // on how they are encoded, see\n // http://dvd.sourceforge.net/dvdinfo/pes-hdr.html\n\n pes.pts = (packet[offset + 9] & 0x0E) << 27 | (packet[offset + 10] & 0xFF) << 20 | (packet[offset + 11] & 0xFE) << 12 | (packet[offset + 12] & 0xFF) << 5 | (packet[offset + 13] & 0xFE) >>> 3;\n pes.pts *= 4; // Left shift by 2\n\n pes.pts += (packet[offset + 13] & 0x06) >>> 1; // OR by the two LSBs\n\n pes.dts = pes.pts;\n if (ptsDtsFlags & 0x40) {\n pes.dts = (packet[offset + 14] & 0x0E) << 27 | (packet[offset + 15] & 0xFF) << 20 | (packet[offset + 16] & 0xFE) << 12 | (packet[offset + 17] & 0xFF) << 5 | (packet[offset + 18] & 0xFE) >>> 3;\n pes.dts *= 4; // Left shift by 2\n\n pes.dts += (packet[offset + 18] & 0x06) >>> 1; // OR by the two LSBs\n }\n }\n\n return pes;\n };\n var parseNalUnitType = function (type) {\n switch (type) {\n case 0x05:\n return 'slice_layer_without_partitioning_rbsp_idr';\n case 0x06:\n return 'sei_rbsp';\n case 0x07:\n return 'seq_parameter_set_rbsp';\n case 0x08:\n return 'pic_parameter_set_rbsp';\n case 0x09:\n return 'access_unit_delimiter_rbsp';\n default:\n return null;\n }\n };\n var videoPacketContainsKeyFrame = function (packet) {\n var offset = 4 + parseAdaptionField(packet);\n var frameBuffer = packet.subarray(offset);\n var frameI = 0;\n var frameSyncPoint = 0;\n var foundKeyFrame = false;\n var nalType; // advance the sync point to a NAL start, if necessary\n\n for (; frameSyncPoint < frameBuffer.byteLength - 3; frameSyncPoint++) {\n if (frameBuffer[frameSyncPoint + 2] === 1) {\n // the sync point is properly aligned\n frameI = frameSyncPoint + 5;\n break;\n }\n }\n while (frameI < frameBuffer.byteLength) {\n // look at the current byte to determine if we've hit the end of\n // a NAL unit boundary\n switch (frameBuffer[frameI]) {\n case 0:\n // skip past non-sync sequences\n if (frameBuffer[frameI - 1] !== 0) {\n frameI += 2;\n break;\n } else if (frameBuffer[frameI - 2] !== 0) {\n frameI++;\n break;\n }\n if (frameSyncPoint + 3 !== frameI - 2) {\n nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);\n if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {\n foundKeyFrame = true;\n }\n } // drop trailing zeroes\n\n do {\n frameI++;\n } while (frameBuffer[frameI] !== 1 && frameI < frameBuffer.length);\n frameSyncPoint = frameI - 2;\n frameI += 3;\n break;\n case 1:\n // skip past non-sync sequences\n if (frameBuffer[frameI - 1] !== 0 || frameBuffer[frameI - 2] !== 0) {\n frameI += 3;\n break;\n }\n nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);\n if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {\n foundKeyFrame = true;\n }\n frameSyncPoint = frameI - 2;\n frameI += 3;\n break;\n default:\n // the current byte isn't a one or zero, so it cannot be part\n // of a sync sequence\n frameI += 3;\n break;\n }\n }\n frameBuffer = frameBuffer.subarray(frameSyncPoint);\n frameI -= frameSyncPoint;\n frameSyncPoint = 0; // parse the final nal\n\n if (frameBuffer && frameBuffer.byteLength > 3) {\n nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);\n if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {\n foundKeyFrame = true;\n }\n }\n return foundKeyFrame;\n };\n var probe$1 = {\n parseType: parseType,\n parsePat: parsePat,\n parsePmt: parsePmt,\n parsePayloadUnitStartIndicator: parsePayloadUnitStartIndicator,\n parsePesType: parsePesType,\n parsePesTime: parsePesTime,\n videoPacketContainsKeyFrame: videoPacketContainsKeyFrame\n };\n /**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * Parse mpeg2 transport stream packets to extract basic timing information\n */\n\n var StreamTypes = streamTypes;\n var handleRollover = timestampRolloverStream.handleRollover;\n var probe = {};\n probe.ts = probe$1;\n probe.aac = utils;\n var ONE_SECOND_IN_TS = clock$2.ONE_SECOND_IN_TS;\n var MP2T_PACKET_LENGTH = 188,\n // bytes\n SYNC_BYTE = 0x47;\n /**\n * walks through segment data looking for pat and pmt packets to parse out\n * program map table information\n */\n\n var parsePsi_ = function (bytes, pmt) {\n var startIndex = 0,\n endIndex = MP2T_PACKET_LENGTH,\n packet,\n type;\n while (endIndex < bytes.byteLength) {\n // Look for a pair of start and end sync bytes in the data..\n if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {\n // We found a packet\n packet = bytes.subarray(startIndex, endIndex);\n type = probe.ts.parseType(packet, pmt.pid);\n switch (type) {\n case 'pat':\n pmt.pid = probe.ts.parsePat(packet);\n break;\n case 'pmt':\n var table = probe.ts.parsePmt(packet);\n pmt.table = pmt.table || {};\n Object.keys(table).forEach(function (key) {\n pmt.table[key] = table[key];\n });\n break;\n }\n startIndex += MP2T_PACKET_LENGTH;\n endIndex += MP2T_PACKET_LENGTH;\n continue;\n } // If we get here, we have somehow become de-synchronized and we need to step\n // forward one byte at a time until we find a pair of sync bytes that denote\n // a packet\n\n startIndex++;\n endIndex++;\n }\n };\n /**\n * walks through the segment data from the start and end to get timing information\n * for the first and last audio pes packets\n */\n\n var parseAudioPes_ = function (bytes, pmt, result) {\n var startIndex = 0,\n endIndex = MP2T_PACKET_LENGTH,\n packet,\n type,\n pesType,\n pusi,\n parsed;\n var endLoop = false; // Start walking from start of segment to get first audio packet\n\n while (endIndex <= bytes.byteLength) {\n // Look for a pair of start and end sync bytes in the data..\n if (bytes[startIndex] === SYNC_BYTE && (bytes[endIndex] === SYNC_BYTE || endIndex === bytes.byteLength)) {\n // We found a packet\n packet = bytes.subarray(startIndex, endIndex);\n type = probe.ts.parseType(packet, pmt.pid);\n switch (type) {\n case 'pes':\n pesType = probe.ts.parsePesType(packet, pmt.table);\n pusi = probe.ts.parsePayloadUnitStartIndicator(packet);\n if (pesType === 'audio' && pusi) {\n parsed = probe.ts.parsePesTime(packet);\n if (parsed) {\n parsed.type = 'audio';\n result.audio.push(parsed);\n endLoop = true;\n }\n }\n break;\n }\n if (endLoop) {\n break;\n }\n startIndex += MP2T_PACKET_LENGTH;\n endIndex += MP2T_PACKET_LENGTH;\n continue;\n } // If we get here, we have somehow become de-synchronized and we need to step\n // forward one byte at a time until we find a pair of sync bytes that denote\n // a packet\n\n startIndex++;\n endIndex++;\n } // Start walking from end of segment to get last audio packet\n\n endIndex = bytes.byteLength;\n startIndex = endIndex - MP2T_PACKET_LENGTH;\n endLoop = false;\n while (startIndex >= 0) {\n // Look for a pair of start and end sync bytes in the data..\n if (bytes[startIndex] === SYNC_BYTE && (bytes[endIndex] === SYNC_BYTE || endIndex === bytes.byteLength)) {\n // We found a packet\n packet = bytes.subarray(startIndex, endIndex);\n type = probe.ts.parseType(packet, pmt.pid);\n switch (type) {\n case 'pes':\n pesType = probe.ts.parsePesType(packet, pmt.table);\n pusi = probe.ts.parsePayloadUnitStartIndicator(packet);\n if (pesType === 'audio' && pusi) {\n parsed = probe.ts.parsePesTime(packet);\n if (parsed) {\n parsed.type = 'audio';\n result.audio.push(parsed);\n endLoop = true;\n }\n }\n break;\n }\n if (endLoop) {\n break;\n }\n startIndex -= MP2T_PACKET_LENGTH;\n endIndex -= MP2T_PACKET_LENGTH;\n continue;\n } // If we get here, we have somehow become de-synchronized and we need to step\n // forward one byte at a time until we find a pair of sync bytes that denote\n // a packet\n\n startIndex--;\n endIndex--;\n }\n };\n /**\n * walks through the segment data from the start and end to get timing information\n * for the first and last video pes packets as well as timing information for the first\n * key frame.\n */\n\n var parseVideoPes_ = function (bytes, pmt, result) {\n var startIndex = 0,\n endIndex = MP2T_PACKET_LENGTH,\n packet,\n type,\n pesType,\n pusi,\n parsed,\n frame,\n i,\n pes;\n var endLoop = false;\n var currentFrame = {\n data: [],\n size: 0\n }; // Start walking from start of segment to get first video packet\n\n while (endIndex < bytes.byteLength) {\n // Look for a pair of start and end sync bytes in the data..\n if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {\n // We found a packet\n packet = bytes.subarray(startIndex, endIndex);\n type = probe.ts.parseType(packet, pmt.pid);\n switch (type) {\n case 'pes':\n pesType = probe.ts.parsePesType(packet, pmt.table);\n pusi = probe.ts.parsePayloadUnitStartIndicator(packet);\n if (pesType === 'video') {\n if (pusi && !endLoop) {\n parsed = probe.ts.parsePesTime(packet);\n if (parsed) {\n parsed.type = 'video';\n result.video.push(parsed);\n endLoop = true;\n }\n }\n if (!result.firstKeyFrame) {\n if (pusi) {\n if (currentFrame.size !== 0) {\n frame = new Uint8Array(currentFrame.size);\n i = 0;\n while (currentFrame.data.length) {\n pes = currentFrame.data.shift();\n frame.set(pes, i);\n i += pes.byteLength;\n }\n if (probe.ts.videoPacketContainsKeyFrame(frame)) {\n var firstKeyFrame = probe.ts.parsePesTime(frame); // PTS/DTS may not be available. Simply *not* setting\n // the keyframe seems to work fine with HLS playback\n // and definitely preferable to a crash with TypeError...\n\n if (firstKeyFrame) {\n result.firstKeyFrame = firstKeyFrame;\n result.firstKeyFrame.type = 'video';\n } else {\n // eslint-disable-next-line\n console.warn('Failed to extract PTS/DTS from PES at first keyframe. ' + 'This could be an unusual TS segment, or else mux.js did not ' + 'parse your TS segment correctly. If you know your TS ' + 'segments do contain PTS/DTS on keyframes please file a bug ' + 'report! You can try ffprobe to double check for yourself.');\n }\n }\n currentFrame.size = 0;\n }\n }\n currentFrame.data.push(packet);\n currentFrame.size += packet.byteLength;\n }\n }\n break;\n }\n if (endLoop && result.firstKeyFrame) {\n break;\n }\n startIndex += MP2T_PACKET_LENGTH;\n endIndex += MP2T_PACKET_LENGTH;\n continue;\n } // If we get here, we have somehow become de-synchronized and we need to step\n // forward one byte at a time until we find a pair of sync bytes that denote\n // a packet\n\n startIndex++;\n endIndex++;\n } // Start walking from end of segment to get last video packet\n\n endIndex = bytes.byteLength;\n startIndex = endIndex - MP2T_PACKET_LENGTH;\n endLoop = false;\n while (startIndex >= 0) {\n // Look for a pair of start and end sync bytes in the data..\n if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {\n // We found a packet\n packet = bytes.subarray(startIndex, endIndex);\n type = probe.ts.parseType(packet, pmt.pid);\n switch (type) {\n case 'pes':\n pesType = probe.ts.parsePesType(packet, pmt.table);\n pusi = probe.ts.parsePayloadUnitStartIndicator(packet);\n if (pesType === 'video' && pusi) {\n parsed = probe.ts.parsePesTime(packet);\n if (parsed) {\n parsed.type = 'video';\n result.video.push(parsed);\n endLoop = true;\n }\n }\n break;\n }\n if (endLoop) {\n break;\n }\n startIndex -= MP2T_PACKET_LENGTH;\n endIndex -= MP2T_PACKET_LENGTH;\n continue;\n } // If we get here, we have somehow become de-synchronized and we need to step\n // forward one byte at a time until we find a pair of sync bytes that denote\n // a packet\n\n startIndex--;\n endIndex--;\n }\n };\n /**\n * Adjusts the timestamp information for the segment to account for\n * rollover and convert to seconds based on pes packet timescale (90khz clock)\n */\n\n var adjustTimestamp_ = function (segmentInfo, baseTimestamp) {\n if (segmentInfo.audio && segmentInfo.audio.length) {\n var audioBaseTimestamp = baseTimestamp;\n if (typeof audioBaseTimestamp === 'undefined' || isNaN(audioBaseTimestamp)) {\n audioBaseTimestamp = segmentInfo.audio[0].dts;\n }\n segmentInfo.audio.forEach(function (info) {\n info.dts = handleRollover(info.dts, audioBaseTimestamp);\n info.pts = handleRollover(info.pts, audioBaseTimestamp); // time in seconds\n\n info.dtsTime = info.dts / ONE_SECOND_IN_TS;\n info.ptsTime = info.pts / ONE_SECOND_IN_TS;\n });\n }\n if (segmentInfo.video && segmentInfo.video.length) {\n var videoBaseTimestamp = baseTimestamp;\n if (typeof videoBaseTimestamp === 'undefined' || isNaN(videoBaseTimestamp)) {\n videoBaseTimestamp = segmentInfo.video[0].dts;\n }\n segmentInfo.video.forEach(function (info) {\n info.dts = handleRollover(info.dts, videoBaseTimestamp);\n info.pts = handleRollover(info.pts, videoBaseTimestamp); // time in seconds\n\n info.dtsTime = info.dts / ONE_SECOND_IN_TS;\n info.ptsTime = info.pts / ONE_SECOND_IN_TS;\n });\n if (segmentInfo.firstKeyFrame) {\n var frame = segmentInfo.firstKeyFrame;\n frame.dts = handleRollover(frame.dts, videoBaseTimestamp);\n frame.pts = handleRollover(frame.pts, videoBaseTimestamp); // time in seconds\n\n frame.dtsTime = frame.dts / ONE_SECOND_IN_TS;\n frame.ptsTime = frame.pts / ONE_SECOND_IN_TS;\n }\n }\n };\n /**\n * inspects the aac data stream for start and end time information\n */\n\n var inspectAac_ = function (bytes) {\n var endLoop = false,\n audioCount = 0,\n sampleRate = null,\n timestamp = null,\n frameSize = 0,\n byteIndex = 0,\n packet;\n while (bytes.length - byteIndex >= 3) {\n var type = probe.aac.parseType(bytes, byteIndex);\n switch (type) {\n case 'timed-metadata':\n // Exit early because we don't have enough to parse\n // the ID3 tag header\n if (bytes.length - byteIndex < 10) {\n endLoop = true;\n break;\n }\n frameSize = probe.aac.parseId3TagSize(bytes, byteIndex); // Exit early if we don't have enough in the buffer\n // to emit a full packet\n\n if (frameSize > bytes.length) {\n endLoop = true;\n break;\n }\n if (timestamp === null) {\n packet = bytes.subarray(byteIndex, byteIndex + frameSize);\n timestamp = probe.aac.parseAacTimestamp(packet);\n }\n byteIndex += frameSize;\n break;\n case 'audio':\n // Exit early because we don't have enough to parse\n // the ADTS frame header\n if (bytes.length - byteIndex < 7) {\n endLoop = true;\n break;\n }\n frameSize = probe.aac.parseAdtsSize(bytes, byteIndex); // Exit early if we don't have enough in the buffer\n // to emit a full packet\n\n if (frameSize > bytes.length) {\n endLoop = true;\n break;\n }\n if (sampleRate === null) {\n packet = bytes.subarray(byteIndex, byteIndex + frameSize);\n sampleRate = probe.aac.parseSampleRate(packet);\n }\n audioCount++;\n byteIndex += frameSize;\n break;\n default:\n byteIndex++;\n break;\n }\n if (endLoop) {\n return null;\n }\n }\n if (sampleRate === null || timestamp === null) {\n return null;\n }\n var audioTimescale = ONE_SECOND_IN_TS / sampleRate;\n var result = {\n audio: [{\n type: 'audio',\n dts: timestamp,\n pts: timestamp\n }, {\n type: 'audio',\n dts: timestamp + audioCount * 1024 * audioTimescale,\n pts: timestamp + audioCount * 1024 * audioTimescale\n }]\n };\n return result;\n };\n /**\n * inspects the transport stream segment data for start and end time information\n * of the audio and video tracks (when present) as well as the first key frame's\n * start time.\n */\n\n var inspectTs_ = function (bytes) {\n var pmt = {\n pid: null,\n table: null\n };\n var result = {};\n parsePsi_(bytes, pmt);\n for (var pid in pmt.table) {\n if (pmt.table.hasOwnProperty(pid)) {\n var type = pmt.table[pid];\n switch (type) {\n case StreamTypes.H264_STREAM_TYPE:\n result.video = [];\n parseVideoPes_(bytes, pmt, result);\n if (result.video.length === 0) {\n delete result.video;\n }\n break;\n case StreamTypes.ADTS_STREAM_TYPE:\n result.audio = [];\n parseAudioPes_(bytes, pmt, result);\n if (result.audio.length === 0) {\n delete result.audio;\n }\n break;\n }\n }\n }\n return result;\n };\n /**\n * Inspects segment byte data and returns an object with start and end timing information\n *\n * @param {Uint8Array} bytes The segment byte data\n * @param {Number} baseTimestamp Relative reference timestamp used when adjusting frame\n * timestamps for rollover. This value must be in 90khz clock.\n * @return {Object} Object containing start and end frame timing info of segment.\n */\n\n var inspect = function (bytes, baseTimestamp) {\n var isAacData = probe.aac.isLikelyAacData(bytes);\n var result;\n if (isAacData) {\n result = inspectAac_(bytes);\n } else {\n result = inspectTs_(bytes);\n }\n if (!result || !result.audio && !result.video) {\n return null;\n }\n adjustTimestamp_(result, baseTimestamp);\n return result;\n };\n var tsInspector = {\n inspect: inspect,\n parseAudioPes_: parseAudioPes_\n };\n /* global self */\n\n /**\n * Re-emits transmuxer events by converting them into messages to the\n * world outside the worker.\n *\n * @param {Object} transmuxer the transmuxer to wire events on\n * @private\n */\n\n const wireTransmuxerEvents = function (self, transmuxer) {\n transmuxer.on('data', function (segment) {\n // transfer ownership of the underlying ArrayBuffer\n // instead of doing a copy to save memory\n // ArrayBuffers are transferable but generic TypedArrays are not\n // @link https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Using_web_workers#Passing_data_by_transferring_ownership_(transferable_objects)\n const initArray = segment.initSegment;\n segment.initSegment = {\n data: initArray.buffer,\n byteOffset: initArray.byteOffset,\n byteLength: initArray.byteLength\n };\n const typedArray = segment.data;\n segment.data = typedArray.buffer;\n self.postMessage({\n action: 'data',\n segment,\n byteOffset: typedArray.byteOffset,\n byteLength: typedArray.byteLength\n }, [segment.data]);\n });\n transmuxer.on('done', function (data) {\n self.postMessage({\n action: 'done'\n });\n });\n transmuxer.on('gopInfo', function (gopInfo) {\n self.postMessage({\n action: 'gopInfo',\n gopInfo\n });\n });\n transmuxer.on('videoSegmentTimingInfo', function (timingInfo) {\n const videoSegmentTimingInfo = {\n start: {\n decode: clock$2.videoTsToSeconds(timingInfo.start.dts),\n presentation: clock$2.videoTsToSeconds(timingInfo.start.pts)\n },\n end: {\n decode: clock$2.videoTsToSeconds(timingInfo.end.dts),\n presentation: clock$2.videoTsToSeconds(timingInfo.end.pts)\n },\n baseMediaDecodeTime: clock$2.videoTsToSeconds(timingInfo.baseMediaDecodeTime)\n };\n if (timingInfo.prependedContentDuration) {\n videoSegmentTimingInfo.prependedContentDuration = clock$2.videoTsToSeconds(timingInfo.prependedContentDuration);\n }\n self.postMessage({\n action: 'videoSegmentTimingInfo',\n videoSegmentTimingInfo\n });\n });\n transmuxer.on('audioSegmentTimingInfo', function (timingInfo) {\n // Note that all times for [audio/video]SegmentTimingInfo events are in video clock\n const audioSegmentTimingInfo = {\n start: {\n decode: clock$2.videoTsToSeconds(timingInfo.start.dts),\n presentation: clock$2.videoTsToSeconds(timingInfo.start.pts)\n },\n end: {\n decode: clock$2.videoTsToSeconds(timingInfo.end.dts),\n presentation: clock$2.videoTsToSeconds(timingInfo.end.pts)\n },\n baseMediaDecodeTime: clock$2.videoTsToSeconds(timingInfo.baseMediaDecodeTime)\n };\n if (timingInfo.prependedContentDuration) {\n audioSegmentTimingInfo.prependedContentDuration = clock$2.videoTsToSeconds(timingInfo.prependedContentDuration);\n }\n self.postMessage({\n action: 'audioSegmentTimingInfo',\n audioSegmentTimingInfo\n });\n });\n transmuxer.on('id3Frame', function (id3Frame) {\n self.postMessage({\n action: 'id3Frame',\n id3Frame\n });\n });\n transmuxer.on('caption', function (caption) {\n self.postMessage({\n action: 'caption',\n caption\n });\n });\n transmuxer.on('trackinfo', function (trackInfo) {\n self.postMessage({\n action: 'trackinfo',\n trackInfo\n });\n });\n transmuxer.on('audioTimingInfo', function (audioTimingInfo) {\n // convert to video TS since we prioritize video time over audio\n self.postMessage({\n action: 'audioTimingInfo',\n audioTimingInfo: {\n start: clock$2.videoTsToSeconds(audioTimingInfo.start),\n end: clock$2.videoTsToSeconds(audioTimingInfo.end)\n }\n });\n });\n transmuxer.on('videoTimingInfo', function (videoTimingInfo) {\n self.postMessage({\n action: 'videoTimingInfo',\n videoTimingInfo: {\n start: clock$2.videoTsToSeconds(videoTimingInfo.start),\n end: clock$2.videoTsToSeconds(videoTimingInfo.end)\n }\n });\n });\n transmuxer.on('log', function (log) {\n self.postMessage({\n action: 'log',\n log\n });\n });\n };\n /**\n * All incoming messages route through this hash. If no function exists\n * to handle an incoming message, then we ignore the message.\n *\n * @class MessageHandlers\n * @param {Object} options the options to initialize with\n */\n\n class MessageHandlers {\n constructor(self, options) {\n this.options = options || {};\n this.self = self;\n this.init();\n }\n /**\n * initialize our web worker and wire all the events.\n */\n\n init() {\n if (this.transmuxer) {\n this.transmuxer.dispose();\n }\n this.transmuxer = new transmuxer.Transmuxer(this.options);\n wireTransmuxerEvents(this.self, this.transmuxer);\n }\n pushMp4Captions(data) {\n if (!this.captionParser) {\n this.captionParser = new captionParser();\n this.captionParser.init();\n }\n const segment = new Uint8Array(data.data, data.byteOffset, data.byteLength);\n const parsed = this.captionParser.parse(segment, data.trackIds, data.timescales);\n this.self.postMessage({\n action: 'mp4Captions',\n captions: parsed && parsed.captions || [],\n logs: parsed && parsed.logs || [],\n data: segment.buffer\n }, [segment.buffer]);\n }\n probeMp4StartTime({\n timescales,\n data\n }) {\n const startTime = probe$2.startTime(timescales, data);\n this.self.postMessage({\n action: 'probeMp4StartTime',\n startTime,\n data\n }, [data.buffer]);\n }\n probeMp4Tracks({\n data\n }) {\n const tracks = probe$2.tracks(data);\n this.self.postMessage({\n action: 'probeMp4Tracks',\n tracks,\n data\n }, [data.buffer]);\n }\n /**\n * Probes an mp4 segment for EMSG boxes containing ID3 data.\n * https://aomediacodec.github.io/id3-emsg/\n *\n * @param {Uint8Array} data segment data\n * @param {number} offset segment start time\n * @return {Object[]} an array of ID3 frames\n */\n\n probeEmsgID3({\n data,\n offset\n }) {\n const id3Frames = probe$2.getEmsgID3(data, offset);\n this.self.postMessage({\n action: 'probeEmsgID3',\n id3Frames,\n emsgData: data\n }, [data.buffer]);\n }\n /**\n * Probe an mpeg2-ts segment to determine the start time of the segment in it's\n * internal \"media time,\" as well as whether it contains video and/or audio.\n *\n * @private\n * @param {Uint8Array} bytes - segment bytes\n * @param {number} baseStartTime\n * Relative reference timestamp used when adjusting frame timestamps for rollover.\n * This value should be in seconds, as it's converted to a 90khz clock within the\n * function body.\n * @return {Object} The start time of the current segment in \"media time\" as well as\n * whether it contains video and/or audio\n */\n\n probeTs({\n data,\n baseStartTime\n }) {\n const tsStartTime = typeof baseStartTime === 'number' && !isNaN(baseStartTime) ? baseStartTime * clock$2.ONE_SECOND_IN_TS : void 0;\n const timeInfo = tsInspector.inspect(data, tsStartTime);\n let result = null;\n if (timeInfo) {\n result = {\n // each type's time info comes back as an array of 2 times, start and end\n hasVideo: timeInfo.video && timeInfo.video.length === 2 || false,\n hasAudio: timeInfo.audio && timeInfo.audio.length === 2 || false\n };\n if (result.hasVideo) {\n result.videoStart = timeInfo.video[0].ptsTime;\n }\n if (result.hasAudio) {\n result.audioStart = timeInfo.audio[0].ptsTime;\n }\n }\n this.self.postMessage({\n action: 'probeTs',\n result,\n data\n }, [data.buffer]);\n }\n clearAllMp4Captions() {\n if (this.captionParser) {\n this.captionParser.clearAllCaptions();\n }\n }\n clearParsedMp4Captions() {\n if (this.captionParser) {\n this.captionParser.clearParsedCaptions();\n }\n }\n /**\n * Adds data (a ts segment) to the start of the transmuxer pipeline for\n * processing.\n *\n * @param {ArrayBuffer} data data to push into the muxer\n */\n\n push(data) {\n // Cast array buffer to correct type for transmuxer\n const segment = new Uint8Array(data.data, data.byteOffset, data.byteLength);\n this.transmuxer.push(segment);\n }\n /**\n * Recreate the transmuxer so that the next segment added via `push`\n * start with a fresh transmuxer.\n */\n\n reset() {\n this.transmuxer.reset();\n }\n /**\n * Set the value that will be used as the `baseMediaDecodeTime` time for the\n * next segment pushed in. Subsequent segments will have their `baseMediaDecodeTime`\n * set relative to the first based on the PTS values.\n *\n * @param {Object} data used to set the timestamp offset in the muxer\n */\n\n setTimestampOffset(data) {\n const timestampOffset = data.timestampOffset || 0;\n this.transmuxer.setBaseMediaDecodeTime(Math.round(clock$2.secondsToVideoTs(timestampOffset)));\n }\n setAudioAppendStart(data) {\n this.transmuxer.setAudioAppendStart(Math.ceil(clock$2.secondsToVideoTs(data.appendStart)));\n }\n setRemux(data) {\n this.transmuxer.setRemux(data.remux);\n }\n /**\n * Forces the pipeline to finish processing the last segment and emit it's\n * results.\n *\n * @param {Object} data event data, not really used\n */\n\n flush(data) {\n this.transmuxer.flush(); // transmuxed done action is fired after both audio/video pipelines are flushed\n\n self.postMessage({\n action: 'done',\n type: 'transmuxed'\n });\n }\n endTimeline() {\n this.transmuxer.endTimeline(); // transmuxed endedtimeline action is fired after both audio/video pipelines end their\n // timelines\n\n self.postMessage({\n action: 'endedtimeline',\n type: 'transmuxed'\n });\n }\n alignGopsWith(data) {\n this.transmuxer.alignGopsWith(data.gopsToAlignWith.slice());\n }\n }\n /**\n * Our web worker interface so that things can talk to mux.js\n * that will be running in a web worker. the scope is passed to this by\n * webworkify.\n *\n * @param {Object} self the scope for the web worker\n */\n\n self.onmessage = function (event) {\n if (event.data.action === 'init' && event.data.options) {\n this.messageHandlers = new MessageHandlers(self, event.data.options);\n return;\n }\n if (!this.messageHandlers) {\n this.messageHandlers = new MessageHandlers(self);\n }\n if (event.data && event.data.action && event.data.action !== 'init') {\n if (this.messageHandlers[event.data.action]) {\n this.messageHandlers[event.data.action](event.data);\n }\n }\n };\n}));\nvar TransmuxWorker = factory(workerCode$1);\n/* rollup-plugin-worker-factory end for worker!/home/runner/work/http-streaming/http-streaming/src/transmuxer-worker.js */\n\nconst handleData_ = (event, transmuxedData, callback) => {\n const {\n type,\n initSegment,\n captions,\n captionStreams,\n metadata,\n videoFrameDtsTime,\n videoFramePtsTime\n } = event.data.segment;\n transmuxedData.buffer.push({\n captions,\n captionStreams,\n metadata\n });\n const boxes = event.data.segment.boxes || {\n data: event.data.segment.data\n };\n const result = {\n type,\n // cast ArrayBuffer to TypedArray\n data: new Uint8Array(boxes.data, boxes.data.byteOffset, boxes.data.byteLength),\n initSegment: new Uint8Array(initSegment.data, initSegment.byteOffset, initSegment.byteLength)\n };\n if (typeof videoFrameDtsTime !== 'undefined') {\n result.videoFrameDtsTime = videoFrameDtsTime;\n }\n if (typeof videoFramePtsTime !== 'undefined') {\n result.videoFramePtsTime = videoFramePtsTime;\n }\n callback(result);\n};\nconst handleDone_ = ({\n transmuxedData,\n callback\n}) => {\n // Previously we only returned data on data events,\n // not on done events. Clear out the buffer to keep that consistent.\n transmuxedData.buffer = []; // all buffers should have been flushed from the muxer, so start processing anything we\n // have received\n\n callback(transmuxedData);\n};\nconst handleGopInfo_ = (event, transmuxedData) => {\n transmuxedData.gopInfo = event.data.gopInfo;\n};\nconst processTransmux = options => {\n const {\n transmuxer,\n bytes,\n audioAppendStart,\n gopsToAlignWith,\n remux,\n onData,\n onTrackInfo,\n onAudioTimingInfo,\n onVideoTimingInfo,\n onVideoSegmentTimingInfo,\n onAudioSegmentTimingInfo,\n onId3,\n onCaptions,\n onDone,\n onEndedTimeline,\n onTransmuxerLog,\n isEndOfTimeline\n } = options;\n const transmuxedData = {\n buffer: []\n };\n let waitForEndedTimelineEvent = isEndOfTimeline;\n const handleMessage = event => {\n if (transmuxer.currentTransmux !== options) {\n // disposed\n return;\n }\n if (event.data.action === 'data') {\n handleData_(event, transmuxedData, onData);\n }\n if (event.data.action === 'trackinfo') {\n onTrackInfo(event.data.trackInfo);\n }\n if (event.data.action === 'gopInfo') {\n handleGopInfo_(event, transmuxedData);\n }\n if (event.data.action === 'audioTimingInfo') {\n onAudioTimingInfo(event.data.audioTimingInfo);\n }\n if (event.data.action === 'videoTimingInfo') {\n onVideoTimingInfo(event.data.videoTimingInfo);\n }\n if (event.data.action === 'videoSegmentTimingInfo') {\n onVideoSegmentTimingInfo(event.data.videoSegmentTimingInfo);\n }\n if (event.data.action === 'audioSegmentTimingInfo') {\n onAudioSegmentTimingInfo(event.data.audioSegmentTimingInfo);\n }\n if (event.data.action === 'id3Frame') {\n onId3([event.data.id3Frame], event.data.id3Frame.dispatchType);\n }\n if (event.data.action === 'caption') {\n onCaptions(event.data.caption);\n }\n if (event.data.action === 'endedtimeline') {\n waitForEndedTimelineEvent = false;\n onEndedTimeline();\n }\n if (event.data.action === 'log') {\n onTransmuxerLog(event.data.log);\n } // wait for the transmuxed event since we may have audio and video\n\n if (event.data.type !== 'transmuxed') {\n return;\n } // If the \"endedtimeline\" event has not yet fired, and this segment represents the end\n // of a timeline, that means there may still be data events before the segment\n // processing can be considerred complete. In that case, the final event should be\n // an \"endedtimeline\" event with the type \"transmuxed.\"\n\n if (waitForEndedTimelineEvent) {\n return;\n }\n transmuxer.onmessage = null;\n handleDone_({\n transmuxedData,\n callback: onDone\n });\n /* eslint-disable no-use-before-define */\n\n dequeue(transmuxer);\n /* eslint-enable */\n };\n\n transmuxer.onmessage = handleMessage;\n if (audioAppendStart) {\n transmuxer.postMessage({\n action: 'setAudioAppendStart',\n appendStart: audioAppendStart\n });\n } // allow empty arrays to be passed to clear out GOPs\n\n if (Array.isArray(gopsToAlignWith)) {\n transmuxer.postMessage({\n action: 'alignGopsWith',\n gopsToAlignWith\n });\n }\n if (typeof remux !== 'undefined') {\n transmuxer.postMessage({\n action: 'setRemux',\n remux\n });\n }\n if (bytes.byteLength) {\n const buffer = bytes instanceof ArrayBuffer ? bytes : bytes.buffer;\n const byteOffset = bytes instanceof ArrayBuffer ? 0 : bytes.byteOffset;\n transmuxer.postMessage({\n action: 'push',\n // Send the typed-array of data as an ArrayBuffer so that\n // it can be sent as a \"Transferable\" and avoid the costly\n // memory copy\n data: buffer,\n // To recreate the original typed-array, we need information\n // about what portion of the ArrayBuffer it was a view into\n byteOffset,\n byteLength: bytes.byteLength\n }, [buffer]);\n }\n if (isEndOfTimeline) {\n transmuxer.postMessage({\n action: 'endTimeline'\n });\n } // even if we didn't push any bytes, we have to make sure we flush in case we reached\n // the end of the segment\n\n transmuxer.postMessage({\n action: 'flush'\n });\n};\nconst dequeue = transmuxer => {\n transmuxer.currentTransmux = null;\n if (transmuxer.transmuxQueue.length) {\n transmuxer.currentTransmux = transmuxer.transmuxQueue.shift();\n if (typeof transmuxer.currentTransmux === 'function') {\n transmuxer.currentTransmux();\n } else {\n processTransmux(transmuxer.currentTransmux);\n }\n }\n};\nconst processAction = (transmuxer, action) => {\n transmuxer.postMessage({\n action\n });\n dequeue(transmuxer);\n};\nconst enqueueAction = (action, transmuxer) => {\n if (!transmuxer.currentTransmux) {\n transmuxer.currentTransmux = action;\n processAction(transmuxer, action);\n return;\n }\n transmuxer.transmuxQueue.push(processAction.bind(null, transmuxer, action));\n};\nconst reset = transmuxer => {\n enqueueAction('reset', transmuxer);\n};\nconst endTimeline = transmuxer => {\n enqueueAction('endTimeline', transmuxer);\n};\nconst transmux = options => {\n if (!options.transmuxer.currentTransmux) {\n options.transmuxer.currentTransmux = options;\n processTransmux(options);\n return;\n }\n options.transmuxer.transmuxQueue.push(options);\n};\nconst createTransmuxer = options => {\n const transmuxer = new TransmuxWorker();\n transmuxer.currentTransmux = null;\n transmuxer.transmuxQueue = [];\n const term = transmuxer.terminate;\n transmuxer.terminate = () => {\n transmuxer.currentTransmux = null;\n transmuxer.transmuxQueue.length = 0;\n return term.call(transmuxer);\n };\n transmuxer.postMessage({\n action: 'init',\n options\n });\n return transmuxer;\n};\nvar segmentTransmuxer = {\n reset,\n endTimeline,\n transmux,\n createTransmuxer\n};\nconst workerCallback = function (options) {\n const transmuxer = options.transmuxer;\n const endAction = options.endAction || options.action;\n const callback = options.callback;\n const message = _extends({}, options, {\n endAction: null,\n transmuxer: null,\n callback: null\n });\n const listenForEndEvent = event => {\n if (event.data.action !== endAction) {\n return;\n }\n transmuxer.removeEventListener('message', listenForEndEvent); // transfer ownership of bytes back to us.\n\n if (event.data.data) {\n event.data.data = new Uint8Array(event.data.data, options.byteOffset || 0, options.byteLength || event.data.data.byteLength);\n if (options.data) {\n options.data = event.data.data;\n }\n }\n callback(event.data);\n };\n transmuxer.addEventListener('message', listenForEndEvent);\n if (options.data) {\n const isArrayBuffer = options.data instanceof ArrayBuffer;\n message.byteOffset = isArrayBuffer ? 0 : options.data.byteOffset;\n message.byteLength = options.data.byteLength;\n const transfers = [isArrayBuffer ? options.data : options.data.buffer];\n transmuxer.postMessage(message, transfers);\n } else {\n transmuxer.postMessage(message);\n }\n};\nconst REQUEST_ERRORS = {\n FAILURE: 2,\n TIMEOUT: -101,\n ABORTED: -102\n};\n/**\n * Abort all requests\n *\n * @param {Object} activeXhrs - an object that tracks all XHR requests\n */\n\nconst abortAll = activeXhrs => {\n activeXhrs.forEach(xhr => {\n xhr.abort();\n });\n};\n/**\n * Gather important bandwidth stats once a request has completed\n *\n * @param {Object} request - the XHR request from which to gather stats\n */\n\nconst getRequestStats = request => {\n return {\n bandwidth: request.bandwidth,\n bytesReceived: request.bytesReceived || 0,\n roundTripTime: request.roundTripTime || 0\n };\n};\n/**\n * If possible gather bandwidth stats as a request is in\n * progress\n *\n * @param {Event} progressEvent - an event object from an XHR's progress event\n */\n\nconst getProgressStats = progressEvent => {\n const request = progressEvent.target;\n const roundTripTime = Date.now() - request.requestTime;\n const stats = {\n bandwidth: Infinity,\n bytesReceived: 0,\n roundTripTime: roundTripTime || 0\n };\n stats.bytesReceived = progressEvent.loaded; // This can result in Infinity if stats.roundTripTime is 0 but that is ok\n // because we should only use bandwidth stats on progress to determine when\n // abort a request early due to insufficient bandwidth\n\n stats.bandwidth = Math.floor(stats.bytesReceived / stats.roundTripTime * 8 * 1000);\n return stats;\n};\n/**\n * Handle all error conditions in one place and return an object\n * with all the information\n *\n * @param {Error|null} error - if non-null signals an error occured with the XHR\n * @param {Object} request - the XHR request that possibly generated the error\n */\n\nconst handleErrors = (error, request) => {\n if (request.timedout) {\n return {\n status: request.status,\n message: 'HLS request timed-out at URL: ' + request.uri,\n code: REQUEST_ERRORS.TIMEOUT,\n xhr: request\n };\n }\n if (request.aborted) {\n return {\n status: request.status,\n message: 'HLS request aborted at URL: ' + request.uri,\n code: REQUEST_ERRORS.ABORTED,\n xhr: request\n };\n }\n if (error) {\n return {\n status: request.status,\n message: 'HLS request errored at URL: ' + request.uri,\n code: REQUEST_ERRORS.FAILURE,\n xhr: request\n };\n }\n if (request.responseType === 'arraybuffer' && request.response.byteLength === 0) {\n return {\n status: request.status,\n message: 'Empty HLS response at URL: ' + request.uri,\n code: REQUEST_ERRORS.FAILURE,\n xhr: request\n };\n }\n return null;\n};\n/**\n * Handle responses for key data and convert the key data to the correct format\n * for the decryption step later\n *\n * @param {Object} segment - a simplified copy of the segmentInfo object\n * from SegmentLoader\n * @param {Array} objects - objects to add the key bytes to.\n * @param {Function} finishProcessingFn - a callback to execute to continue processing\n * this request\n */\n\nconst handleKeyResponse = (segment, objects, finishProcessingFn) => (error, request) => {\n const response = request.response;\n const errorObj = handleErrors(error, request);\n if (errorObj) {\n return finishProcessingFn(errorObj, segment);\n }\n if (response.byteLength !== 16) {\n return finishProcessingFn({\n status: request.status,\n message: 'Invalid HLS key at URL: ' + request.uri,\n code: REQUEST_ERRORS.FAILURE,\n xhr: request\n }, segment);\n }\n const view = new DataView(response);\n const bytes = new Uint32Array([view.getUint32(0), view.getUint32(4), view.getUint32(8), view.getUint32(12)]);\n for (let i = 0; i < objects.length; i++) {\n objects[i].bytes = bytes;\n }\n return finishProcessingFn(null, segment);\n};\nconst parseInitSegment = (segment, callback) => {\n const type = detectContainerForBytes(segment.map.bytes); // TODO: We should also handle ts init segments here, but we\n // only know how to parse mp4 init segments at the moment\n\n if (type !== 'mp4') {\n const uri = segment.map.resolvedUri || segment.map.uri;\n return callback({\n internal: true,\n message: `Found unsupported ${type || 'unknown'} container for initialization segment at URL: ${uri}`,\n code: REQUEST_ERRORS.FAILURE\n });\n }\n workerCallback({\n action: 'probeMp4Tracks',\n data: segment.map.bytes,\n transmuxer: segment.transmuxer,\n callback: ({\n tracks,\n data\n }) => {\n // transfer bytes back to us\n segment.map.bytes = data;\n tracks.forEach(function (track) {\n segment.map.tracks = segment.map.tracks || {}; // only support one track of each type for now\n\n if (segment.map.tracks[track.type]) {\n return;\n }\n segment.map.tracks[track.type] = track;\n if (typeof track.id === 'number' && track.timescale) {\n segment.map.timescales = segment.map.timescales || {};\n segment.map.timescales[track.id] = track.timescale;\n }\n });\n return callback(null);\n }\n });\n};\n/**\n * Handle init-segment responses\n *\n * @param {Object} segment - a simplified copy of the segmentInfo object\n * from SegmentLoader\n * @param {Function} finishProcessingFn - a callback to execute to continue processing\n * this request\n */\n\nconst handleInitSegmentResponse = ({\n segment,\n finishProcessingFn\n}) => (error, request) => {\n const errorObj = handleErrors(error, request);\n if (errorObj) {\n return finishProcessingFn(errorObj, segment);\n }\n const bytes = new Uint8Array(request.response); // init segment is encypted, we will have to wait\n // until the key request is done to decrypt.\n\n if (segment.map.key) {\n segment.map.encryptedBytes = bytes;\n return finishProcessingFn(null, segment);\n }\n segment.map.bytes = bytes;\n parseInitSegment(segment, function (parseError) {\n if (parseError) {\n parseError.xhr = request;\n parseError.status = request.status;\n return finishProcessingFn(parseError, segment);\n }\n finishProcessingFn(null, segment);\n });\n};\n/**\n * Response handler for segment-requests being sure to set the correct\n * property depending on whether the segment is encryped or not\n * Also records and keeps track of stats that are used for ABR purposes\n *\n * @param {Object} segment - a simplified copy of the segmentInfo object\n * from SegmentLoader\n * @param {Function} finishProcessingFn - a callback to execute to continue processing\n * this request\n */\n\nconst handleSegmentResponse = ({\n segment,\n finishProcessingFn,\n responseType\n}) => (error, request) => {\n const errorObj = handleErrors(error, request);\n if (errorObj) {\n return finishProcessingFn(errorObj, segment);\n }\n const newBytes =\n // although responseText \"should\" exist, this guard serves to prevent an error being\n // thrown for two primary cases:\n // 1. the mime type override stops working, or is not implemented for a specific\n // browser\n // 2. when using mock XHR libraries like sinon that do not allow the override behavior\n responseType === 'arraybuffer' || !request.responseText ? request.response : stringToArrayBuffer(request.responseText.substring(segment.lastReachedChar || 0));\n segment.stats = getRequestStats(request);\n if (segment.key) {\n segment.encryptedBytes = new Uint8Array(newBytes);\n } else {\n segment.bytes = new Uint8Array(newBytes);\n }\n return finishProcessingFn(null, segment);\n};\nconst transmuxAndNotify = ({\n segment,\n bytes,\n trackInfoFn,\n timingInfoFn,\n videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn,\n id3Fn,\n captionsFn,\n isEndOfTimeline,\n endedTimelineFn,\n dataFn,\n doneFn,\n onTransmuxerLog\n}) => {\n const fmp4Tracks = segment.map && segment.map.tracks || {};\n const isMuxed = Boolean(fmp4Tracks.audio && fmp4Tracks.video); // Keep references to each function so we can null them out after we're done with them.\n // One reason for this is that in the case of full segments, we want to trust start\n // times from the probe, rather than the transmuxer.\n\n let audioStartFn = timingInfoFn.bind(null, segment, 'audio', 'start');\n const audioEndFn = timingInfoFn.bind(null, segment, 'audio', 'end');\n let videoStartFn = timingInfoFn.bind(null, segment, 'video', 'start');\n const videoEndFn = timingInfoFn.bind(null, segment, 'video', 'end');\n const finish = () => transmux({\n bytes,\n transmuxer: segment.transmuxer,\n audioAppendStart: segment.audioAppendStart,\n gopsToAlignWith: segment.gopsToAlignWith,\n remux: isMuxed,\n onData: result => {\n result.type = result.type === 'combined' ? 'video' : result.type;\n dataFn(segment, result);\n },\n onTrackInfo: trackInfo => {\n if (trackInfoFn) {\n if (isMuxed) {\n trackInfo.isMuxed = true;\n }\n trackInfoFn(segment, trackInfo);\n }\n },\n onAudioTimingInfo: audioTimingInfo => {\n // we only want the first start value we encounter\n if (audioStartFn && typeof audioTimingInfo.start !== 'undefined') {\n audioStartFn(audioTimingInfo.start);\n audioStartFn = null;\n } // we want to continually update the end time\n\n if (audioEndFn && typeof audioTimingInfo.end !== 'undefined') {\n audioEndFn(audioTimingInfo.end);\n }\n },\n onVideoTimingInfo: videoTimingInfo => {\n // we only want the first start value we encounter\n if (videoStartFn && typeof videoTimingInfo.start !== 'undefined') {\n videoStartFn(videoTimingInfo.start);\n videoStartFn = null;\n } // we want to continually update the end time\n\n if (videoEndFn && typeof videoTimingInfo.end !== 'undefined') {\n videoEndFn(videoTimingInfo.end);\n }\n },\n onVideoSegmentTimingInfo: videoSegmentTimingInfo => {\n videoSegmentTimingInfoFn(videoSegmentTimingInfo);\n },\n onAudioSegmentTimingInfo: audioSegmentTimingInfo => {\n audioSegmentTimingInfoFn(audioSegmentTimingInfo);\n },\n onId3: (id3Frames, dispatchType) => {\n id3Fn(segment, id3Frames, dispatchType);\n },\n onCaptions: captions => {\n captionsFn(segment, [captions]);\n },\n isEndOfTimeline,\n onEndedTimeline: () => {\n endedTimelineFn();\n },\n onTransmuxerLog,\n onDone: result => {\n if (!doneFn) {\n return;\n }\n result.type = result.type === 'combined' ? 'video' : result.type;\n doneFn(null, segment, result);\n }\n }); // In the transmuxer, we don't yet have the ability to extract a \"proper\" start time.\n // Meaning cached frame data may corrupt our notion of where this segment\n // really starts. To get around this, probe for the info needed.\n\n workerCallback({\n action: 'probeTs',\n transmuxer: segment.transmuxer,\n data: bytes,\n baseStartTime: segment.baseStartTime,\n callback: data => {\n segment.bytes = bytes = data.data;\n const probeResult = data.result;\n if (probeResult) {\n trackInfoFn(segment, {\n hasAudio: probeResult.hasAudio,\n hasVideo: probeResult.hasVideo,\n isMuxed\n });\n trackInfoFn = null;\n }\n finish();\n }\n });\n};\nconst handleSegmentBytes = ({\n segment,\n bytes,\n trackInfoFn,\n timingInfoFn,\n videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn,\n id3Fn,\n captionsFn,\n isEndOfTimeline,\n endedTimelineFn,\n dataFn,\n doneFn,\n onTransmuxerLog\n}) => {\n let bytesAsUint8Array = new Uint8Array(bytes); // TODO:\n // We should have a handler that fetches the number of bytes required\n // to check if something is fmp4. This will allow us to save bandwidth\n // because we can only exclude a playlist and abort requests\n // by codec after trackinfo triggers.\n\n if (isLikelyFmp4MediaSegment(bytesAsUint8Array)) {\n segment.isFmp4 = true;\n const {\n tracks\n } = segment.map;\n const trackInfo = {\n isFmp4: true,\n hasVideo: !!tracks.video,\n hasAudio: !!tracks.audio\n }; // if we have a audio track, with a codec that is not set to\n // encrypted audio\n\n if (tracks.audio && tracks.audio.codec && tracks.audio.codec !== 'enca') {\n trackInfo.audioCodec = tracks.audio.codec;\n } // if we have a video track, with a codec that is not set to\n // encrypted video\n\n if (tracks.video && tracks.video.codec && tracks.video.codec !== 'encv') {\n trackInfo.videoCodec = tracks.video.codec;\n }\n if (tracks.video && tracks.audio) {\n trackInfo.isMuxed = true;\n } // since we don't support appending fmp4 data on progress, we know we have the full\n // segment here\n\n trackInfoFn(segment, trackInfo); // The probe doesn't provide the segment end time, so only callback with the start\n // time. The end time can be roughly calculated by the receiver using the duration.\n //\n // Note that the start time returned by the probe reflects the baseMediaDecodeTime, as\n // that is the true start of the segment (where the playback engine should begin\n // decoding).\n\n const finishLoading = (captions, id3Frames) => {\n // if the track still has audio at this point it is only possible\n // for it to be audio only. See `tracks.video && tracks.audio` if statement\n // above.\n // we make sure to use segment.bytes here as that\n dataFn(segment, {\n data: bytesAsUint8Array,\n type: trackInfo.hasAudio && !trackInfo.isMuxed ? 'audio' : 'video'\n });\n if (id3Frames && id3Frames.length) {\n id3Fn(segment, id3Frames);\n }\n if (captions && captions.length) {\n captionsFn(segment, captions);\n }\n doneFn(null, segment, {});\n };\n workerCallback({\n action: 'probeMp4StartTime',\n timescales: segment.map.timescales,\n data: bytesAsUint8Array,\n transmuxer: segment.transmuxer,\n callback: ({\n data,\n startTime\n }) => {\n // transfer bytes back to us\n bytes = data.buffer;\n segment.bytes = bytesAsUint8Array = data;\n if (trackInfo.hasAudio && !trackInfo.isMuxed) {\n timingInfoFn(segment, 'audio', 'start', startTime);\n }\n if (trackInfo.hasVideo) {\n timingInfoFn(segment, 'video', 'start', startTime);\n }\n workerCallback({\n action: 'probeEmsgID3',\n data: bytesAsUint8Array,\n transmuxer: segment.transmuxer,\n offset: startTime,\n callback: ({\n emsgData,\n id3Frames\n }) => {\n // transfer bytes back to us\n bytes = emsgData.buffer;\n segment.bytes = bytesAsUint8Array = emsgData; // Run through the CaptionParser in case there are captions.\n // Initialize CaptionParser if it hasn't been yet\n\n if (!tracks.video || !emsgData.byteLength || !segment.transmuxer) {\n finishLoading(undefined, id3Frames);\n return;\n }\n workerCallback({\n action: 'pushMp4Captions',\n endAction: 'mp4Captions',\n transmuxer: segment.transmuxer,\n data: bytesAsUint8Array,\n timescales: segment.map.timescales,\n trackIds: [tracks.video.id],\n callback: message => {\n // transfer bytes back to us\n bytes = message.data.buffer;\n segment.bytes = bytesAsUint8Array = message.data;\n message.logs.forEach(function (log) {\n onTransmuxerLog(merge(log, {\n stream: 'mp4CaptionParser'\n }));\n });\n finishLoading(message.captions, id3Frames);\n }\n });\n }\n });\n }\n });\n return;\n } // VTT or other segments that don't need processing\n\n if (!segment.transmuxer) {\n doneFn(null, segment, {});\n return;\n }\n if (typeof segment.container === 'undefined') {\n segment.container = detectContainerForBytes(bytesAsUint8Array);\n }\n if (segment.container !== 'ts' && segment.container !== 'aac') {\n trackInfoFn(segment, {\n hasAudio: false,\n hasVideo: false\n });\n doneFn(null, segment, {});\n return;\n } // ts or aac\n\n transmuxAndNotify({\n segment,\n bytes,\n trackInfoFn,\n timingInfoFn,\n videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn,\n id3Fn,\n captionsFn,\n isEndOfTimeline,\n endedTimelineFn,\n dataFn,\n doneFn,\n onTransmuxerLog\n });\n};\nconst decrypt = function ({\n id,\n key,\n encryptedBytes,\n decryptionWorker\n}, callback) {\n const decryptionHandler = event => {\n if (event.data.source === id) {\n decryptionWorker.removeEventListener('message', decryptionHandler);\n const decrypted = event.data.decrypted;\n callback(new Uint8Array(decrypted.bytes, decrypted.byteOffset, decrypted.byteLength));\n }\n };\n decryptionWorker.addEventListener('message', decryptionHandler);\n let keyBytes;\n if (key.bytes.slice) {\n keyBytes = key.bytes.slice();\n } else {\n keyBytes = new Uint32Array(Array.prototype.slice.call(key.bytes));\n } // incrementally decrypt the bytes\n\n decryptionWorker.postMessage(createTransferableMessage({\n source: id,\n encrypted: encryptedBytes,\n key: keyBytes,\n iv: key.iv\n }), [encryptedBytes.buffer, keyBytes.buffer]);\n};\n/**\n * Decrypt the segment via the decryption web worker\n *\n * @param {WebWorker} decryptionWorker - a WebWorker interface to AES-128 decryption\n * routines\n * @param {Object} segment - a simplified copy of the segmentInfo object\n * from SegmentLoader\n * @param {Function} trackInfoFn - a callback that receives track info\n * @param {Function} timingInfoFn - a callback that receives timing info\n * @param {Function} videoSegmentTimingInfoFn\n * a callback that receives video timing info based on media times and\n * any adjustments made by the transmuxer\n * @param {Function} audioSegmentTimingInfoFn\n * a callback that receives audio timing info based on media times and\n * any adjustments made by the transmuxer\n * @param {boolean} isEndOfTimeline\n * true if this segment represents the last segment in a timeline\n * @param {Function} endedTimelineFn\n * a callback made when a timeline is ended, will only be called if\n * isEndOfTimeline is true\n * @param {Function} dataFn - a callback that is executed when segment bytes are available\n * and ready to use\n * @param {Function} doneFn - a callback that is executed after decryption has completed\n */\n\nconst decryptSegment = ({\n decryptionWorker,\n segment,\n trackInfoFn,\n timingInfoFn,\n videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn,\n id3Fn,\n captionsFn,\n isEndOfTimeline,\n endedTimelineFn,\n dataFn,\n doneFn,\n onTransmuxerLog\n}) => {\n decrypt({\n id: segment.requestId,\n key: segment.key,\n encryptedBytes: segment.encryptedBytes,\n decryptionWorker\n }, decryptedBytes => {\n segment.bytes = decryptedBytes;\n handleSegmentBytes({\n segment,\n bytes: segment.bytes,\n trackInfoFn,\n timingInfoFn,\n videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn,\n id3Fn,\n captionsFn,\n isEndOfTimeline,\n endedTimelineFn,\n dataFn,\n doneFn,\n onTransmuxerLog\n });\n });\n};\n/**\n * This function waits for all XHRs to finish (with either success or failure)\n * before continueing processing via it's callback. The function gathers errors\n * from each request into a single errors array so that the error status for\n * each request can be examined later.\n *\n * @param {Object} activeXhrs - an object that tracks all XHR requests\n * @param {WebWorker} decryptionWorker - a WebWorker interface to AES-128 decryption\n * routines\n * @param {Function} trackInfoFn - a callback that receives track info\n * @param {Function} timingInfoFn - a callback that receives timing info\n * @param {Function} videoSegmentTimingInfoFn\n * a callback that receives video timing info based on media times and\n * any adjustments made by the transmuxer\n * @param {Function} audioSegmentTimingInfoFn\n * a callback that receives audio timing info based on media times and\n * any adjustments made by the transmuxer\n * @param {Function} id3Fn - a callback that receives ID3 metadata\n * @param {Function} captionsFn - a callback that receives captions\n * @param {boolean} isEndOfTimeline\n * true if this segment represents the last segment in a timeline\n * @param {Function} endedTimelineFn\n * a callback made when a timeline is ended, will only be called if\n * isEndOfTimeline is true\n * @param {Function} dataFn - a callback that is executed when segment bytes are available\n * and ready to use\n * @param {Function} doneFn - a callback that is executed after all resources have been\n * downloaded and any decryption completed\n */\n\nconst waitForCompletion = ({\n activeXhrs,\n decryptionWorker,\n trackInfoFn,\n timingInfoFn,\n videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn,\n id3Fn,\n captionsFn,\n isEndOfTimeline,\n endedTimelineFn,\n dataFn,\n doneFn,\n onTransmuxerLog\n}) => {\n let count = 0;\n let didError = false;\n return (error, segment) => {\n if (didError) {\n return;\n }\n if (error) {\n didError = true; // If there are errors, we have to abort any outstanding requests\n\n abortAll(activeXhrs); // Even though the requests above are aborted, and in theory we could wait until we\n // handle the aborted events from those requests, there are some cases where we may\n // never get an aborted event. For instance, if the network connection is lost and\n // there were two requests, the first may have triggered an error immediately, while\n // the second request remains unsent. In that case, the aborted algorithm will not\n // trigger an abort: see https://xhr.spec.whatwg.org/#the-abort()-method\n //\n // We also can't rely on the ready state of the XHR, since the request that\n // triggered the connection error may also show as a ready state of 0 (unsent).\n // Therefore, we have to finish this group of requests immediately after the first\n // seen error.\n\n return doneFn(error, segment);\n }\n count += 1;\n if (count === activeXhrs.length) {\n const segmentFinish = function () {\n if (segment.encryptedBytes) {\n return decryptSegment({\n decryptionWorker,\n segment,\n trackInfoFn,\n timingInfoFn,\n videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn,\n id3Fn,\n captionsFn,\n isEndOfTimeline,\n endedTimelineFn,\n dataFn,\n doneFn,\n onTransmuxerLog\n });\n } // Otherwise, everything is ready just continue\n\n handleSegmentBytes({\n segment,\n bytes: segment.bytes,\n trackInfoFn,\n timingInfoFn,\n videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn,\n id3Fn,\n captionsFn,\n isEndOfTimeline,\n endedTimelineFn,\n dataFn,\n doneFn,\n onTransmuxerLog\n });\n }; // Keep track of when *all* of the requests have completed\n\n segment.endOfAllRequests = Date.now();\n if (segment.map && segment.map.encryptedBytes && !segment.map.bytes) {\n return decrypt({\n decryptionWorker,\n // add -init to the \"id\" to differentiate between segment\n // and init segment decryption, just in case they happen\n // at the same time at some point in the future.\n id: segment.requestId + '-init',\n encryptedBytes: segment.map.encryptedBytes,\n key: segment.map.key\n }, decryptedBytes => {\n segment.map.bytes = decryptedBytes;\n parseInitSegment(segment, parseError => {\n if (parseError) {\n abortAll(activeXhrs);\n return doneFn(parseError, segment);\n }\n segmentFinish();\n });\n });\n }\n segmentFinish();\n }\n };\n};\n/**\n * Calls the abort callback if any request within the batch was aborted. Will only call\n * the callback once per batch of requests, even if multiple were aborted.\n *\n * @param {Object} loadendState - state to check to see if the abort function was called\n * @param {Function} abortFn - callback to call for abort\n */\n\nconst handleLoadEnd = ({\n loadendState,\n abortFn\n}) => event => {\n const request = event.target;\n if (request.aborted && abortFn && !loadendState.calledAbortFn) {\n abortFn();\n loadendState.calledAbortFn = true;\n }\n};\n/**\n * Simple progress event callback handler that gathers some stats before\n * executing a provided callback with the `segment` object\n *\n * @param {Object} segment - a simplified copy of the segmentInfo object\n * from SegmentLoader\n * @param {Function} progressFn - a callback that is executed each time a progress event\n * is received\n * @param {Function} trackInfoFn - a callback that receives track info\n * @param {Function} timingInfoFn - a callback that receives timing info\n * @param {Function} videoSegmentTimingInfoFn\n * a callback that receives video timing info based on media times and\n * any adjustments made by the transmuxer\n * @param {Function} audioSegmentTimingInfoFn\n * a callback that receives audio timing info based on media times and\n * any adjustments made by the transmuxer\n * @param {boolean} isEndOfTimeline\n * true if this segment represents the last segment in a timeline\n * @param {Function} endedTimelineFn\n * a callback made when a timeline is ended, will only be called if\n * isEndOfTimeline is true\n * @param {Function} dataFn - a callback that is executed when segment bytes are available\n * and ready to use\n * @param {Event} event - the progress event object from XMLHttpRequest\n */\n\nconst handleProgress = ({\n segment,\n progressFn,\n trackInfoFn,\n timingInfoFn,\n videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn,\n id3Fn,\n captionsFn,\n isEndOfTimeline,\n endedTimelineFn,\n dataFn\n}) => event => {\n const request = event.target;\n if (request.aborted) {\n return;\n }\n segment.stats = merge(segment.stats, getProgressStats(event)); // record the time that we receive the first byte of data\n\n if (!segment.stats.firstBytesReceivedAt && segment.stats.bytesReceived) {\n segment.stats.firstBytesReceivedAt = Date.now();\n }\n return progressFn(event, segment);\n};\n/**\n * Load all resources and does any processing necessary for a media-segment\n *\n * Features:\n * decrypts the media-segment if it has a key uri and an iv\n * aborts *all* requests if *any* one request fails\n *\n * The segment object, at minimum, has the following format:\n * {\n * resolvedUri: String,\n * [transmuxer]: Object,\n * [byterange]: {\n * offset: Number,\n * length: Number\n * },\n * [key]: {\n * resolvedUri: String\n * [byterange]: {\n * offset: Number,\n * length: Number\n * },\n * iv: {\n * bytes: Uint32Array\n * }\n * },\n * [map]: {\n * resolvedUri: String,\n * [byterange]: {\n * offset: Number,\n * length: Number\n * },\n * [bytes]: Uint8Array\n * }\n * }\n * ...where [name] denotes optional properties\n *\n * @param {Function} xhr - an instance of the xhr wrapper in xhr.js\n * @param {Object} xhrOptions - the base options to provide to all xhr requests\n * @param {WebWorker} decryptionWorker - a WebWorker interface to AES-128\n * decryption routines\n * @param {Object} segment - a simplified copy of the segmentInfo object\n * from SegmentLoader\n * @param {Function} abortFn - a callback called (only once) if any piece of a request was\n * aborted\n * @param {Function} progressFn - a callback that receives progress events from the main\n * segment's xhr request\n * @param {Function} trackInfoFn - a callback that receives track info\n * @param {Function} timingInfoFn - a callback that receives timing info\n * @param {Function} videoSegmentTimingInfoFn\n * a callback that receives video timing info based on media times and\n * any adjustments made by the transmuxer\n * @param {Function} audioSegmentTimingInfoFn\n * a callback that receives audio timing info based on media times and\n * any adjustments made by the transmuxer\n * @param {Function} id3Fn - a callback that receives ID3 metadata\n * @param {Function} captionsFn - a callback that receives captions\n * @param {boolean} isEndOfTimeline\n * true if this segment represents the last segment in a timeline\n * @param {Function} endedTimelineFn\n * a callback made when a timeline is ended, will only be called if\n * isEndOfTimeline is true\n * @param {Function} dataFn - a callback that receives data from the main segment's xhr\n * request, transmuxed if needed\n * @param {Function} doneFn - a callback that is executed only once all requests have\n * succeeded or failed\n * @return {Function} a function that, when invoked, immediately aborts all\n * outstanding requests\n */\n\nconst mediaSegmentRequest = ({\n xhr,\n xhrOptions,\n decryptionWorker,\n segment,\n abortFn,\n progressFn,\n trackInfoFn,\n timingInfoFn,\n videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn,\n id3Fn,\n captionsFn,\n isEndOfTimeline,\n endedTimelineFn,\n dataFn,\n doneFn,\n onTransmuxerLog\n}) => {\n const activeXhrs = [];\n const finishProcessingFn = waitForCompletion({\n activeXhrs,\n decryptionWorker,\n trackInfoFn,\n timingInfoFn,\n videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn,\n id3Fn,\n captionsFn,\n isEndOfTimeline,\n endedTimelineFn,\n dataFn,\n doneFn,\n onTransmuxerLog\n }); // optionally, request the decryption key\n\n if (segment.key && !segment.key.bytes) {\n const objects = [segment.key];\n if (segment.map && !segment.map.bytes && segment.map.key && segment.map.key.resolvedUri === segment.key.resolvedUri) {\n objects.push(segment.map.key);\n }\n const keyRequestOptions = merge(xhrOptions, {\n uri: segment.key.resolvedUri,\n responseType: 'arraybuffer'\n });\n const keyRequestCallback = handleKeyResponse(segment, objects, finishProcessingFn);\n const keyXhr = xhr(keyRequestOptions, keyRequestCallback);\n activeXhrs.push(keyXhr);\n } // optionally, request the associated media init segment\n\n if (segment.map && !segment.map.bytes) {\n const differentMapKey = segment.map.key && (!segment.key || segment.key.resolvedUri !== segment.map.key.resolvedUri);\n if (differentMapKey) {\n const mapKeyRequestOptions = merge(xhrOptions, {\n uri: segment.map.key.resolvedUri,\n responseType: 'arraybuffer'\n });\n const mapKeyRequestCallback = handleKeyResponse(segment, [segment.map.key], finishProcessingFn);\n const mapKeyXhr = xhr(mapKeyRequestOptions, mapKeyRequestCallback);\n activeXhrs.push(mapKeyXhr);\n }\n const initSegmentOptions = merge(xhrOptions, {\n uri: segment.map.resolvedUri,\n responseType: 'arraybuffer',\n headers: segmentXhrHeaders(segment.map)\n });\n const initSegmentRequestCallback = handleInitSegmentResponse({\n segment,\n finishProcessingFn\n });\n const initSegmentXhr = xhr(initSegmentOptions, initSegmentRequestCallback);\n activeXhrs.push(initSegmentXhr);\n }\n const segmentRequestOptions = merge(xhrOptions, {\n uri: segment.part && segment.part.resolvedUri || segment.resolvedUri,\n responseType: 'arraybuffer',\n headers: segmentXhrHeaders(segment)\n });\n const segmentRequestCallback = handleSegmentResponse({\n segment,\n finishProcessingFn,\n responseType: segmentRequestOptions.responseType\n });\n const segmentXhr = xhr(segmentRequestOptions, segmentRequestCallback);\n segmentXhr.addEventListener('progress', handleProgress({\n segment,\n progressFn,\n trackInfoFn,\n timingInfoFn,\n videoSegmentTimingInfoFn,\n audioSegmentTimingInfoFn,\n id3Fn,\n captionsFn,\n isEndOfTimeline,\n endedTimelineFn,\n dataFn\n }));\n activeXhrs.push(segmentXhr); // since all parts of the request must be considered, but should not make callbacks\n // multiple times, provide a shared state object\n\n const loadendState = {};\n activeXhrs.forEach(activeXhr => {\n activeXhr.addEventListener('loadend', handleLoadEnd({\n loadendState,\n abortFn\n }));\n });\n return () => abortAll(activeXhrs);\n};\n\n/**\n * @file - codecs.js - Handles tasks regarding codec strings such as translating them to\n * codec strings, or translating codec strings into objects that can be examined.\n */\nconst logFn$1 = logger('CodecUtils');\n/**\n * Returns a set of codec strings parsed from the playlist or the default\n * codec strings if no codecs were specified in the playlist\n *\n * @param {Playlist} media the current media playlist\n * @return {Object} an object with the video and audio codecs\n */\n\nconst getCodecs = function (media) {\n // if the codecs were explicitly specified, use them instead of the\n // defaults\n const mediaAttributes = media.attributes || {};\n if (mediaAttributes.CODECS) {\n return parseCodecs(mediaAttributes.CODECS);\n }\n};\nconst isMaat = (main, media) => {\n const mediaAttributes = media.attributes || {};\n return main && main.mediaGroups && main.mediaGroups.AUDIO && mediaAttributes.AUDIO && main.mediaGroups.AUDIO[mediaAttributes.AUDIO];\n};\nconst isMuxed = (main, media) => {\n if (!isMaat(main, media)) {\n return true;\n }\n const mediaAttributes = media.attributes || {};\n const audioGroup = main.mediaGroups.AUDIO[mediaAttributes.AUDIO];\n for (const groupId in audioGroup) {\n // If an audio group has a URI (the case for HLS, as HLS will use external playlists),\n // or there are listed playlists (the case for DASH, as the manifest will have already\n // provided all of the details necessary to generate the audio playlist, as opposed to\n // HLS' externally requested playlists), then the content is demuxed.\n if (!audioGroup[groupId].uri && !audioGroup[groupId].playlists) {\n return true;\n }\n }\n return false;\n};\nconst unwrapCodecList = function (codecList) {\n const codecs = {};\n codecList.forEach(({\n mediaType,\n type,\n details\n }) => {\n codecs[mediaType] = codecs[mediaType] || [];\n codecs[mediaType].push(translateLegacyCodec(`${type}${details}`));\n });\n Object.keys(codecs).forEach(function (mediaType) {\n if (codecs[mediaType].length > 1) {\n logFn$1(`multiple ${mediaType} codecs found as attributes: ${codecs[mediaType].join(', ')}. Setting playlist codecs to null so that we wait for mux.js to probe segments for real codecs.`);\n codecs[mediaType] = null;\n return;\n }\n codecs[mediaType] = codecs[mediaType][0];\n });\n return codecs;\n};\nconst codecCount = function (codecObj) {\n let count = 0;\n if (codecObj.audio) {\n count++;\n }\n if (codecObj.video) {\n count++;\n }\n return count;\n};\n/**\n * Calculates the codec strings for a working configuration of\n * SourceBuffers to play variant streams in a main playlist. If\n * there is no possible working configuration, an empty object will be\n * returned.\n *\n * @param main {Object} the m3u8 object for the main playlist\n * @param media {Object} the m3u8 object for the variant playlist\n * @return {Object} the codec strings.\n *\n * @private\n */\n\nconst codecsForPlaylist = function (main, media) {\n const mediaAttributes = media.attributes || {};\n const codecInfo = unwrapCodecList(getCodecs(media) || []); // HLS with multiple-audio tracks must always get an audio codec.\n // Put another way, there is no way to have a video-only multiple-audio HLS!\n\n if (isMaat(main, media) && !codecInfo.audio) {\n if (!isMuxed(main, media)) {\n // It is possible for codecs to be specified on the audio media group playlist but\n // not on the rendition playlist. This is mostly the case for DASH, where audio and\n // video are always separate (and separately specified).\n const defaultCodecs = unwrapCodecList(codecsFromDefault(main, mediaAttributes.AUDIO) || []);\n if (defaultCodecs.audio) {\n codecInfo.audio = defaultCodecs.audio;\n }\n }\n }\n return codecInfo;\n};\nconst logFn = logger('PlaylistSelector');\nconst representationToString = function (representation) {\n if (!representation || !representation.playlist) {\n return;\n }\n const playlist = representation.playlist;\n return JSON.stringify({\n id: playlist.id,\n bandwidth: representation.bandwidth,\n width: representation.width,\n height: representation.height,\n codecs: playlist.attributes && playlist.attributes.CODECS || ''\n });\n}; // Utilities\n\n/**\n * Returns the CSS value for the specified property on an element\n * using `getComputedStyle`. Firefox has a long-standing issue where\n * getComputedStyle() may return null when running in an iframe with\n * `display: none`.\n *\n * @see https://bugzilla.mozilla.org/show_bug.cgi?id=548397\n * @param {HTMLElement} el the htmlelement to work on\n * @param {string} the proprety to get the style for\n */\n\nconst safeGetComputedStyle = function (el, property) {\n if (!el) {\n return '';\n }\n const result = window$1.getComputedStyle(el);\n if (!result) {\n return '';\n }\n return result[property];\n};\n/**\n * Resuable stable sort function\n *\n * @param {Playlists} array\n * @param {Function} sortFn Different comparators\n * @function stableSort\n */\n\nconst stableSort = function (array, sortFn) {\n const newArray = array.slice();\n array.sort(function (left, right) {\n const cmp = sortFn(left, right);\n if (cmp === 0) {\n return newArray.indexOf(left) - newArray.indexOf(right);\n }\n return cmp;\n });\n};\n/**\n * A comparator function to sort two playlist object by bandwidth.\n *\n * @param {Object} left a media playlist object\n * @param {Object} right a media playlist object\n * @return {number} Greater than zero if the bandwidth attribute of\n * left is greater than the corresponding attribute of right. Less\n * than zero if the bandwidth of right is greater than left and\n * exactly zero if the two are equal.\n */\n\nconst comparePlaylistBandwidth = function (left, right) {\n let leftBandwidth;\n let rightBandwidth;\n if (left.attributes.BANDWIDTH) {\n leftBandwidth = left.attributes.BANDWIDTH;\n }\n leftBandwidth = leftBandwidth || window$1.Number.MAX_VALUE;\n if (right.attributes.BANDWIDTH) {\n rightBandwidth = right.attributes.BANDWIDTH;\n }\n rightBandwidth = rightBandwidth || window$1.Number.MAX_VALUE;\n return leftBandwidth - rightBandwidth;\n};\n/**\n * A comparator function to sort two playlist object by resolution (width).\n *\n * @param {Object} left a media playlist object\n * @param {Object} right a media playlist object\n * @return {number} Greater than zero if the resolution.width attribute of\n * left is greater than the corresponding attribute of right. Less\n * than zero if the resolution.width of right is greater than left and\n * exactly zero if the two are equal.\n */\n\nconst comparePlaylistResolution = function (left, right) {\n let leftWidth;\n let rightWidth;\n if (left.attributes.RESOLUTION && left.attributes.RESOLUTION.width) {\n leftWidth = left.attributes.RESOLUTION.width;\n }\n leftWidth = leftWidth || window$1.Number.MAX_VALUE;\n if (right.attributes.RESOLUTION && right.attributes.RESOLUTION.width) {\n rightWidth = right.attributes.RESOLUTION.width;\n }\n rightWidth = rightWidth || window$1.Number.MAX_VALUE; // NOTE - Fallback to bandwidth sort as appropriate in cases where multiple renditions\n // have the same media dimensions/ resolution\n\n if (leftWidth === rightWidth && left.attributes.BANDWIDTH && right.attributes.BANDWIDTH) {\n return left.attributes.BANDWIDTH - right.attributes.BANDWIDTH;\n }\n return leftWidth - rightWidth;\n};\n/**\n * Chooses the appropriate media playlist based on bandwidth and player size\n *\n * @param {Object} main\n * Object representation of the main manifest\n * @param {number} playerBandwidth\n * Current calculated bandwidth of the player\n * @param {number} playerWidth\n * Current width of the player element (should account for the device pixel ratio)\n * @param {number} playerHeight\n * Current height of the player element (should account for the device pixel ratio)\n * @param {boolean} limitRenditionByPlayerDimensions\n * True if the player width and height should be used during the selection, false otherwise\n * @param {Object} playlistController\n * the current playlistController object\n * @return {Playlist} the highest bitrate playlist less than the\n * currently detected bandwidth, accounting for some amount of\n * bandwidth variance\n */\n\nlet simpleSelector = function (main, playerBandwidth, playerWidth, playerHeight, limitRenditionByPlayerDimensions, playlistController) {\n // If we end up getting called before `main` is available, exit early\n if (!main) {\n return;\n }\n const options = {\n bandwidth: playerBandwidth,\n width: playerWidth,\n height: playerHeight,\n limitRenditionByPlayerDimensions\n };\n let playlists = main.playlists; // if playlist is audio only, select between currently active audio group playlists.\n\n if (Playlist.isAudioOnly(main)) {\n playlists = playlistController.getAudioTrackPlaylists_(); // add audioOnly to options so that we log audioOnly: true\n // at the buttom of this function for debugging.\n\n options.audioOnly = true;\n } // convert the playlists to an intermediary representation to make comparisons easier\n\n let sortedPlaylistReps = playlists.map(playlist => {\n let bandwidth;\n const width = playlist.attributes && playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.width;\n const height = playlist.attributes && playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.height;\n bandwidth = playlist.attributes && playlist.attributes.BANDWIDTH;\n bandwidth = bandwidth || window$1.Number.MAX_VALUE;\n return {\n bandwidth,\n width,\n height,\n playlist\n };\n });\n stableSort(sortedPlaylistReps, (left, right) => left.bandwidth - right.bandwidth); // filter out any playlists that have been excluded due to\n // incompatible configurations\n\n sortedPlaylistReps = sortedPlaylistReps.filter(rep => !Playlist.isIncompatible(rep.playlist)); // filter out any playlists that have been disabled manually through the representations\n // api or excluded temporarily due to playback errors.\n\n let enabledPlaylistReps = sortedPlaylistReps.filter(rep => Playlist.isEnabled(rep.playlist));\n if (!enabledPlaylistReps.length) {\n // if there are no enabled playlists, then they have all been excluded or disabled\n // by the user through the representations api. In this case, ignore exclusion and\n // fallback to what the user wants by using playlists the user has not disabled.\n enabledPlaylistReps = sortedPlaylistReps.filter(rep => !Playlist.isDisabled(rep.playlist));\n } // filter out any variant that has greater effective bitrate\n // than the current estimated bandwidth\n\n const bandwidthPlaylistReps = enabledPlaylistReps.filter(rep => rep.bandwidth * Config.BANDWIDTH_VARIANCE < playerBandwidth);\n let highestRemainingBandwidthRep = bandwidthPlaylistReps[bandwidthPlaylistReps.length - 1]; // get all of the renditions with the same (highest) bandwidth\n // and then taking the very first element\n\n const bandwidthBestRep = bandwidthPlaylistReps.filter(rep => rep.bandwidth === highestRemainingBandwidthRep.bandwidth)[0]; // if we're not going to limit renditions by player size, make an early decision.\n\n if (limitRenditionByPlayerDimensions === false) {\n const chosenRep = bandwidthBestRep || enabledPlaylistReps[0] || sortedPlaylistReps[0];\n if (chosenRep && chosenRep.playlist) {\n let type = 'sortedPlaylistReps';\n if (bandwidthBestRep) {\n type = 'bandwidthBestRep';\n }\n if (enabledPlaylistReps[0]) {\n type = 'enabledPlaylistReps';\n }\n logFn(`choosing ${representationToString(chosenRep)} using ${type} with options`, options);\n return chosenRep.playlist;\n }\n logFn('could not choose a playlist with options', options);\n return null;\n } // filter out playlists without resolution information\n\n const haveResolution = bandwidthPlaylistReps.filter(rep => rep.width && rep.height); // sort variants by resolution\n\n stableSort(haveResolution, (left, right) => left.width - right.width); // if we have the exact resolution as the player use it\n\n const resolutionBestRepList = haveResolution.filter(rep => rep.width === playerWidth && rep.height === playerHeight);\n highestRemainingBandwidthRep = resolutionBestRepList[resolutionBestRepList.length - 1]; // ensure that we pick the highest bandwidth variant that have exact resolution\n\n const resolutionBestRep = resolutionBestRepList.filter(rep => rep.bandwidth === highestRemainingBandwidthRep.bandwidth)[0];\n let resolutionPlusOneList;\n let resolutionPlusOneSmallest;\n let resolutionPlusOneRep; // find the smallest variant that is larger than the player\n // if there is no match of exact resolution\n\n if (!resolutionBestRep) {\n resolutionPlusOneList = haveResolution.filter(rep => rep.width > playerWidth || rep.height > playerHeight); // find all the variants have the same smallest resolution\n\n resolutionPlusOneSmallest = resolutionPlusOneList.filter(rep => rep.width === resolutionPlusOneList[0].width && rep.height === resolutionPlusOneList[0].height); // ensure that we also pick the highest bandwidth variant that\n // is just-larger-than the video player\n\n highestRemainingBandwidthRep = resolutionPlusOneSmallest[resolutionPlusOneSmallest.length - 1];\n resolutionPlusOneRep = resolutionPlusOneSmallest.filter(rep => rep.bandwidth === highestRemainingBandwidthRep.bandwidth)[0];\n }\n let leastPixelDiffRep; // If this selector proves to be better than others,\n // resolutionPlusOneRep and resolutionBestRep and all\n // the code involving them should be removed.\n\n if (playlistController.leastPixelDiffSelector) {\n // find the variant that is closest to the player's pixel size\n const leastPixelDiffList = haveResolution.map(rep => {\n rep.pixelDiff = Math.abs(rep.width - playerWidth) + Math.abs(rep.height - playerHeight);\n return rep;\n }); // get the highest bandwidth, closest resolution playlist\n\n stableSort(leastPixelDiffList, (left, right) => {\n // sort by highest bandwidth if pixelDiff is the same\n if (left.pixelDiff === right.pixelDiff) {\n return right.bandwidth - left.bandwidth;\n }\n return left.pixelDiff - right.pixelDiff;\n });\n leastPixelDiffRep = leastPixelDiffList[0];\n } // fallback chain of variants\n\n const chosenRep = leastPixelDiffRep || resolutionPlusOneRep || resolutionBestRep || bandwidthBestRep || enabledPlaylistReps[0] || sortedPlaylistReps[0];\n if (chosenRep && chosenRep.playlist) {\n let type = 'sortedPlaylistReps';\n if (leastPixelDiffRep) {\n type = 'leastPixelDiffRep';\n } else if (resolutionPlusOneRep) {\n type = 'resolutionPlusOneRep';\n } else if (resolutionBestRep) {\n type = 'resolutionBestRep';\n } else if (bandwidthBestRep) {\n type = 'bandwidthBestRep';\n } else if (enabledPlaylistReps[0]) {\n type = 'enabledPlaylistReps';\n }\n logFn(`choosing ${representationToString(chosenRep)} using ${type} with options`, options);\n return chosenRep.playlist;\n }\n logFn('could not choose a playlist with options', options);\n return null;\n};\n\n/**\n * Chooses the appropriate media playlist based on the most recent\n * bandwidth estimate and the player size.\n *\n * Expects to be called within the context of an instance of VhsHandler\n *\n * @return {Playlist} the highest bitrate playlist less than the\n * currently detected bandwidth, accounting for some amount of\n * bandwidth variance\n */\n\nconst lastBandwidthSelector = function () {\n const pixelRatio = this.useDevicePixelRatio ? window$1.devicePixelRatio || 1 : 1;\n return simpleSelector(this.playlists.main, this.systemBandwidth, parseInt(safeGetComputedStyle(this.tech_.el(), 'width'), 10) * pixelRatio, parseInt(safeGetComputedStyle(this.tech_.el(), 'height'), 10) * pixelRatio, this.limitRenditionByPlayerDimensions, this.playlistController_);\n};\n/**\n * Chooses the appropriate media playlist based on an\n * exponential-weighted moving average of the bandwidth after\n * filtering for player size.\n *\n * Expects to be called within the context of an instance of VhsHandler\n *\n * @param {number} decay - a number between 0 and 1. Higher values of\n * this parameter will cause previous bandwidth estimates to lose\n * significance more quickly.\n * @return {Function} a function which can be invoked to create a new\n * playlist selector function.\n * @see https://en.wikipedia.org/wiki/Moving_average#Exponential_moving_average\n */\n\nconst movingAverageBandwidthSelector = function (decay) {\n let average = -1;\n let lastSystemBandwidth = -1;\n if (decay < 0 || decay > 1) {\n throw new Error('Moving average bandwidth decay must be between 0 and 1.');\n }\n return function () {\n const pixelRatio = this.useDevicePixelRatio ? window$1.devicePixelRatio || 1 : 1;\n if (average < 0) {\n average = this.systemBandwidth;\n lastSystemBandwidth = this.systemBandwidth;\n } // stop the average value from decaying for every 250ms\n // when the systemBandwidth is constant\n // and\n // stop average from setting to a very low value when the\n // systemBandwidth becomes 0 in case of chunk cancellation\n\n if (this.systemBandwidth > 0 && this.systemBandwidth !== lastSystemBandwidth) {\n average = decay * this.systemBandwidth + (1 - decay) * average;\n lastSystemBandwidth = this.systemBandwidth;\n }\n return simpleSelector(this.playlists.main, average, parseInt(safeGetComputedStyle(this.tech_.el(), 'width'), 10) * pixelRatio, parseInt(safeGetComputedStyle(this.tech_.el(), 'height'), 10) * pixelRatio, this.limitRenditionByPlayerDimensions, this.playlistController_);\n };\n};\n/**\n * Chooses the appropriate media playlist based on the potential to rebuffer\n *\n * @param {Object} settings\n * Object of information required to use this selector\n * @param {Object} settings.main\n * Object representation of the main manifest\n * @param {number} settings.currentTime\n * The current time of the player\n * @param {number} settings.bandwidth\n * Current measured bandwidth\n * @param {number} settings.duration\n * Duration of the media\n * @param {number} settings.segmentDuration\n * Segment duration to be used in round trip time calculations\n * @param {number} settings.timeUntilRebuffer\n * Time left in seconds until the player has to rebuffer\n * @param {number} settings.currentTimeline\n * The current timeline segments are being loaded from\n * @param {SyncController} settings.syncController\n * SyncController for determining if we have a sync point for a given playlist\n * @return {Object|null}\n * {Object} return.playlist\n * The highest bandwidth playlist with the least amount of rebuffering\n * {Number} return.rebufferingImpact\n * The amount of time in seconds switching to this playlist will rebuffer. A\n * negative value means that switching will cause zero rebuffering.\n */\n\nconst minRebufferMaxBandwidthSelector = function (settings) {\n const {\n main,\n currentTime,\n bandwidth,\n duration,\n segmentDuration,\n timeUntilRebuffer,\n currentTimeline,\n syncController\n } = settings; // filter out any playlists that have been excluded due to\n // incompatible configurations\n\n const compatiblePlaylists = main.playlists.filter(playlist => !Playlist.isIncompatible(playlist)); // filter out any playlists that have been disabled manually through the representations\n // api or excluded temporarily due to playback errors.\n\n let enabledPlaylists = compatiblePlaylists.filter(Playlist.isEnabled);\n if (!enabledPlaylists.length) {\n // if there are no enabled playlists, then they have all been excluded or disabled\n // by the user through the representations api. In this case, ignore exclusion and\n // fallback to what the user wants by using playlists the user has not disabled.\n enabledPlaylists = compatiblePlaylists.filter(playlist => !Playlist.isDisabled(playlist));\n }\n const bandwidthPlaylists = enabledPlaylists.filter(Playlist.hasAttribute.bind(null, 'BANDWIDTH'));\n const rebufferingEstimates = bandwidthPlaylists.map(playlist => {\n const syncPoint = syncController.getSyncPoint(playlist, duration, currentTimeline, currentTime); // If there is no sync point for this playlist, switching to it will require a\n // sync request first. This will double the request time\n\n const numRequests = syncPoint ? 1 : 2;\n const requestTimeEstimate = Playlist.estimateSegmentRequestTime(segmentDuration, bandwidth, playlist);\n const rebufferingImpact = requestTimeEstimate * numRequests - timeUntilRebuffer;\n return {\n playlist,\n rebufferingImpact\n };\n });\n const noRebufferingPlaylists = rebufferingEstimates.filter(estimate => estimate.rebufferingImpact <= 0); // Sort by bandwidth DESC\n\n stableSort(noRebufferingPlaylists, (a, b) => comparePlaylistBandwidth(b.playlist, a.playlist));\n if (noRebufferingPlaylists.length) {\n return noRebufferingPlaylists[0];\n }\n stableSort(rebufferingEstimates, (a, b) => a.rebufferingImpact - b.rebufferingImpact);\n return rebufferingEstimates[0] || null;\n};\n/**\n * Chooses the appropriate media playlist, which in this case is the lowest bitrate\n * one with video. If no renditions with video exist, return the lowest audio rendition.\n *\n * Expects to be called within the context of an instance of VhsHandler\n *\n * @return {Object|null}\n * {Object} return.playlist\n * The lowest bitrate playlist that contains a video codec. If no such rendition\n * exists pick the lowest audio rendition.\n */\n\nconst lowestBitrateCompatibleVariantSelector = function () {\n // filter out any playlists that have been excluded due to\n // incompatible configurations or playback errors\n const playlists = this.playlists.main.playlists.filter(Playlist.isEnabled); // Sort ascending by bitrate\n\n stableSort(playlists, (a, b) => comparePlaylistBandwidth(a, b)); // Parse and assume that playlists with no video codec have no video\n // (this is not necessarily true, although it is generally true).\n //\n // If an entire manifest has no valid videos everything will get filtered\n // out.\n\n const playlistsWithVideo = playlists.filter(playlist => !!codecsForPlaylist(this.playlists.main, playlist).video);\n return playlistsWithVideo[0] || null;\n};\n\n/**\n * Combine all segments into a single Uint8Array\n *\n * @param {Object} segmentObj\n * @return {Uint8Array} concatenated bytes\n * @private\n */\nconst concatSegments = segmentObj => {\n let offset = 0;\n let tempBuffer;\n if (segmentObj.bytes) {\n tempBuffer = new Uint8Array(segmentObj.bytes); // combine the individual segments into one large typed-array\n\n segmentObj.segments.forEach(segment => {\n tempBuffer.set(segment, offset);\n offset += segment.byteLength;\n });\n }\n return tempBuffer;\n};\n\n/**\n * @file text-tracks.js\n */\n/**\n * Create captions text tracks on video.js if they do not exist\n *\n * @param {Object} inbandTextTracks a reference to current inbandTextTracks\n * @param {Object} tech the video.js tech\n * @param {Object} captionStream the caption stream to create\n * @private\n */\n\nconst createCaptionsTrackIfNotExists = function (inbandTextTracks, tech, captionStream) {\n if (!inbandTextTracks[captionStream]) {\n tech.trigger({\n type: 'usage',\n name: 'vhs-608'\n });\n let instreamId = captionStream; // we need to translate SERVICEn for 708 to how mux.js currently labels them\n\n if (/^cc708_/.test(captionStream)) {\n instreamId = 'SERVICE' + captionStream.split('_')[1];\n }\n const track = tech.textTracks().getTrackById(instreamId);\n if (track) {\n // Resuse an existing track with a CC# id because this was\n // very likely created by videojs-contrib-hls from information\n // in the m3u8 for us to use\n inbandTextTracks[captionStream] = track;\n } else {\n // This section gets called when we have caption services that aren't specified in the manifest.\n // Manifest level caption services are handled in media-groups.js under CLOSED-CAPTIONS.\n const captionServices = tech.options_.vhs && tech.options_.vhs.captionServices || {};\n let label = captionStream;\n let language = captionStream;\n let def = false;\n const captionService = captionServices[instreamId];\n if (captionService) {\n label = captionService.label;\n language = captionService.language;\n def = captionService.default;\n } // Otherwise, create a track with the default `CC#` label and\n // without a language\n\n inbandTextTracks[captionStream] = tech.addRemoteTextTrack({\n kind: 'captions',\n id: instreamId,\n // TODO: investigate why this doesn't seem to turn the caption on by default\n default: def,\n label,\n language\n }, false).track;\n }\n }\n};\n/**\n * Add caption text track data to a source handler given an array of captions\n *\n * @param {Object}\n * @param {Object} inbandTextTracks the inband text tracks\n * @param {number} timestampOffset the timestamp offset of the source buffer\n * @param {Array} captionArray an array of caption data\n * @private\n */\n\nconst addCaptionData = function ({\n inbandTextTracks,\n captionArray,\n timestampOffset\n}) {\n if (!captionArray) {\n return;\n }\n const Cue = window$1.WebKitDataCue || window$1.VTTCue;\n captionArray.forEach(caption => {\n const track = caption.stream; // in CEA 608 captions, video.js/mux.js sends a content array\n // with positioning data\n\n if (caption.content) {\n caption.content.forEach(value => {\n const cue = new Cue(caption.startTime + timestampOffset, caption.endTime + timestampOffset, value.text);\n cue.line = value.line;\n cue.align = 'left';\n cue.position = value.position;\n cue.positionAlign = 'line-left';\n inbandTextTracks[track].addCue(cue);\n });\n } else {\n // otherwise, a text value with combined captions is sent\n inbandTextTracks[track].addCue(new Cue(caption.startTime + timestampOffset, caption.endTime + timestampOffset, caption.text));\n }\n });\n};\n/**\n * Define properties on a cue for backwards compatability,\n * but warn the user that the way that they are using it\n * is depricated and will be removed at a later date.\n *\n * @param {Cue} cue the cue to add the properties on\n * @private\n */\n\nconst deprecateOldCue = function (cue) {\n Object.defineProperties(cue.frame, {\n id: {\n get() {\n videojs.log.warn('cue.frame.id is deprecated. Use cue.value.key instead.');\n return cue.value.key;\n }\n },\n value: {\n get() {\n videojs.log.warn('cue.frame.value is deprecated. Use cue.value.data instead.');\n return cue.value.data;\n }\n },\n privateData: {\n get() {\n videojs.log.warn('cue.frame.privateData is deprecated. Use cue.value.data instead.');\n return cue.value.data;\n }\n }\n });\n};\n/**\n * Add metadata text track data to a source handler given an array of metadata\n *\n * @param {Object}\n * @param {Object} inbandTextTracks the inband text tracks\n * @param {Array} metadataArray an array of meta data\n * @param {number} timestampOffset the timestamp offset of the source buffer\n * @param {number} videoDuration the duration of the video\n * @private\n */\n\nconst addMetadata = ({\n inbandTextTracks,\n metadataArray,\n timestampOffset,\n videoDuration\n}) => {\n if (!metadataArray) {\n return;\n }\n const Cue = window$1.WebKitDataCue || window$1.VTTCue;\n const metadataTrack = inbandTextTracks.metadataTrack_;\n if (!metadataTrack) {\n return;\n }\n metadataArray.forEach(metadata => {\n const time = metadata.cueTime + timestampOffset; // if time isn't a finite number between 0 and Infinity, like NaN,\n // ignore this bit of metadata.\n // This likely occurs when you have an non-timed ID3 tag like TIT2,\n // which is the \"Title/Songname/Content description\" frame\n\n if (typeof time !== 'number' || window$1.isNaN(time) || time < 0 || !(time < Infinity)) {\n return;\n } // If we have no frames, we can't create a cue.\n\n if (!metadata.frames || !metadata.frames.length) {\n return;\n }\n metadata.frames.forEach(frame => {\n const cue = new Cue(time, time, frame.value || frame.url || frame.data || '');\n cue.frame = frame;\n cue.value = frame;\n deprecateOldCue(cue);\n metadataTrack.addCue(cue);\n });\n });\n if (!metadataTrack.cues || !metadataTrack.cues.length) {\n return;\n } // Updating the metadeta cues so that\n // the endTime of each cue is the startTime of the next cue\n // the endTime of last cue is the duration of the video\n\n const cues = metadataTrack.cues;\n const cuesArray = []; // Create a copy of the TextTrackCueList...\n // ...disregarding cues with a falsey value\n\n for (let i = 0; i < cues.length; i++) {\n if (cues[i]) {\n cuesArray.push(cues[i]);\n }\n } // Group cues by their startTime value\n\n const cuesGroupedByStartTime = cuesArray.reduce((obj, cue) => {\n const timeSlot = obj[cue.startTime] || [];\n timeSlot.push(cue);\n obj[cue.startTime] = timeSlot;\n return obj;\n }, {}); // Sort startTimes by ascending order\n\n const sortedStartTimes = Object.keys(cuesGroupedByStartTime).sort((a, b) => Number(a) - Number(b)); // Map each cue group's endTime to the next group's startTime\n\n sortedStartTimes.forEach((startTime, idx) => {\n const cueGroup = cuesGroupedByStartTime[startTime];\n const finiteDuration = isFinite(videoDuration) ? videoDuration : 0;\n const nextTime = Number(sortedStartTimes[idx + 1]) || finiteDuration; // Map each cue's endTime the next group's startTime\n\n cueGroup.forEach(cue => {\n cue.endTime = nextTime;\n });\n });\n}; // object for mapping daterange attributes\n\nconst dateRangeAttr = {\n id: 'ID',\n class: 'CLASS',\n startDate: 'START-DATE',\n duration: 'DURATION',\n endDate: 'END-DATE',\n endOnNext: 'END-ON-NEXT',\n plannedDuration: 'PLANNED-DURATION',\n scte35Out: 'SCTE35-OUT',\n scte35In: 'SCTE35-IN'\n};\nconst dateRangeKeysToOmit = new Set(['id', 'class', 'startDate', 'duration', 'endDate', 'endOnNext', 'startTime', 'endTime', 'processDateRange']);\n/**\n * Add DateRange metadata text track to a source handler given an array of metadata\n *\n * @param {Object}\n * @param {Object} inbandTextTracks the inband text tracks\n * @param {Array} dateRanges parsed media playlist\n * @private\n */\n\nconst addDateRangeMetadata = ({\n inbandTextTracks,\n dateRanges\n}) => {\n const metadataTrack = inbandTextTracks.metadataTrack_;\n if (!metadataTrack) {\n return;\n }\n const Cue = window$1.WebKitDataCue || window$1.VTTCue;\n dateRanges.forEach(dateRange => {\n // we generate multiple cues for each date range with different attributes\n for (const key of Object.keys(dateRange)) {\n if (dateRangeKeysToOmit.has(key)) {\n continue;\n }\n const cue = new Cue(dateRange.startTime, dateRange.endTime, '');\n cue.id = dateRange.id;\n cue.type = 'com.apple.quicktime.HLS';\n cue.value = {\n key: dateRangeAttr[key],\n data: dateRange[key]\n };\n if (key === 'scte35Out' || key === 'scte35In') {\n cue.value.data = new Uint8Array(cue.value.data.match(/[\\da-f]{2}/gi)).buffer;\n }\n metadataTrack.addCue(cue);\n }\n dateRange.processDateRange();\n });\n};\n/**\n * Create metadata text track on video.js if it does not exist\n *\n * @param {Object} inbandTextTracks a reference to current inbandTextTracks\n * @param {string} dispatchType the inband metadata track dispatch type\n * @param {Object} tech the video.js tech\n * @private\n */\n\nconst createMetadataTrackIfNotExists = (inbandTextTracks, dispatchType, tech) => {\n if (inbandTextTracks.metadataTrack_) {\n return;\n }\n inbandTextTracks.metadataTrack_ = tech.addRemoteTextTrack({\n kind: 'metadata',\n label: 'Timed Metadata'\n }, false).track;\n if (!videojs.browser.IS_ANY_SAFARI) {\n inbandTextTracks.metadataTrack_.inBandMetadataTrackDispatchType = dispatchType;\n }\n};\n/**\n * Remove cues from a track on video.js.\n *\n * @param {Double} start start of where we should remove the cue\n * @param {Double} end end of where the we should remove the cue\n * @param {Object} track the text track to remove the cues from\n * @private\n */\n\nconst removeCuesFromTrack = function (start, end, track) {\n let i;\n let cue;\n if (!track) {\n return;\n }\n if (!track.cues) {\n return;\n }\n i = track.cues.length;\n while (i--) {\n cue = track.cues[i]; // Remove any cue within the provided start and end time\n\n if (cue.startTime >= start && cue.endTime <= end) {\n track.removeCue(cue);\n }\n }\n};\n/**\n * Remove duplicate cues from a track on video.js (a cue is considered a\n * duplicate if it has the same time interval and text as another)\n *\n * @param {Object} track the text track to remove the duplicate cues from\n * @private\n */\n\nconst removeDuplicateCuesFromTrack = function (track) {\n const cues = track.cues;\n if (!cues) {\n return;\n }\n const uniqueCues = {};\n for (let i = cues.length - 1; i >= 0; i--) {\n const cue = cues[i];\n const cueKey = `${cue.startTime}-${cue.endTime}-${cue.text}`;\n if (uniqueCues[cueKey]) {\n track.removeCue(cue);\n } else {\n uniqueCues[cueKey] = cue;\n }\n }\n};\n\n/**\n * Returns a list of gops in the buffer that have a pts value of 3 seconds or more in\n * front of current time.\n *\n * @param {Array} buffer\n * The current buffer of gop information\n * @param {number} currentTime\n * The current time\n * @param {Double} mapping\n * Offset to map display time to stream presentation time\n * @return {Array}\n * List of gops considered safe to append over\n */\n\nconst gopsSafeToAlignWith = (buffer, currentTime, mapping) => {\n if (typeof currentTime === 'undefined' || currentTime === null || !buffer.length) {\n return [];\n } // pts value for current time + 3 seconds to give a bit more wiggle room\n\n const currentTimePts = Math.ceil((currentTime - mapping + 3) * ONE_SECOND_IN_TS);\n let i;\n for (i = 0; i < buffer.length; i++) {\n if (buffer[i].pts > currentTimePts) {\n break;\n }\n }\n return buffer.slice(i);\n};\n/**\n * Appends gop information (timing and byteLength) received by the transmuxer for the\n * gops appended in the last call to appendBuffer\n *\n * @param {Array} buffer\n * The current buffer of gop information\n * @param {Array} gops\n * List of new gop information\n * @param {boolean} replace\n * If true, replace the buffer with the new gop information. If false, append the\n * new gop information to the buffer in the right location of time.\n * @return {Array}\n * Updated list of gop information\n */\n\nconst updateGopBuffer = (buffer, gops, replace) => {\n if (!gops.length) {\n return buffer;\n }\n if (replace) {\n // If we are in safe append mode, then completely overwrite the gop buffer\n // with the most recent appeneded data. This will make sure that when appending\n // future segments, we only try to align with gops that are both ahead of current\n // time and in the last segment appended.\n return gops.slice();\n }\n const start = gops[0].pts;\n let i = 0;\n for (i; i < buffer.length; i++) {\n if (buffer[i].pts >= start) {\n break;\n }\n }\n return buffer.slice(0, i).concat(gops);\n};\n/**\n * Removes gop information in buffer that overlaps with provided start and end\n *\n * @param {Array} buffer\n * The current buffer of gop information\n * @param {Double} start\n * position to start the remove at\n * @param {Double} end\n * position to end the remove at\n * @param {Double} mapping\n * Offset to map display time to stream presentation time\n */\n\nconst removeGopBuffer = (buffer, start, end, mapping) => {\n const startPts = Math.ceil((start - mapping) * ONE_SECOND_IN_TS);\n const endPts = Math.ceil((end - mapping) * ONE_SECOND_IN_TS);\n const updatedBuffer = buffer.slice();\n let i = buffer.length;\n while (i--) {\n if (buffer[i].pts <= endPts) {\n break;\n }\n }\n if (i === -1) {\n // no removal because end of remove range is before start of buffer\n return updatedBuffer;\n }\n let j = i + 1;\n while (j--) {\n if (buffer[j].pts <= startPts) {\n break;\n }\n } // clamp remove range start to 0 index\n\n j = Math.max(j, 0);\n updatedBuffer.splice(j, i - j + 1);\n return updatedBuffer;\n};\nconst shallowEqual = function (a, b) {\n // if both are undefined\n // or one or the other is undefined\n // they are not equal\n if (!a && !b || !a && b || a && !b) {\n return false;\n } // they are the same object and thus, equal\n\n if (a === b) {\n return true;\n } // sort keys so we can make sure they have\n // all the same keys later.\n\n const akeys = Object.keys(a).sort();\n const bkeys = Object.keys(b).sort(); // different number of keys, not equal\n\n if (akeys.length !== bkeys.length) {\n return false;\n }\n for (let i = 0; i < akeys.length; i++) {\n const key = akeys[i]; // different sorted keys, not equal\n\n if (key !== bkeys[i]) {\n return false;\n } // different values, not equal\n\n if (a[key] !== b[key]) {\n return false;\n }\n }\n return true;\n};\n\n// https://www.w3.org/TR/WebIDL-1/#quotaexceedederror\nconst QUOTA_EXCEEDED_ERR = 22;\n\n/**\n * The segment loader has no recourse except to fetch a segment in the\n * current playlist and use the internal timestamps in that segment to\n * generate a syncPoint. This function returns a good candidate index\n * for that process.\n *\n * @param {Array} segments - the segments array from a playlist.\n * @return {number} An index of a segment from the playlist to load\n */\n\nconst getSyncSegmentCandidate = function (currentTimeline, segments, targetTime) {\n segments = segments || [];\n const timelineSegments = [];\n let time = 0;\n for (let i = 0; i < segments.length; i++) {\n const segment = segments[i];\n if (currentTimeline === segment.timeline) {\n timelineSegments.push(i);\n time += segment.duration;\n if (time > targetTime) {\n return i;\n }\n }\n }\n if (timelineSegments.length === 0) {\n return 0;\n } // default to the last timeline segment\n\n return timelineSegments[timelineSegments.length - 1];\n}; // In the event of a quota exceeded error, keep at least one second of back buffer. This\n// number was arbitrarily chosen and may be updated in the future, but seemed reasonable\n// as a start to prevent any potential issues with removing content too close to the\n// playhead.\n\nconst MIN_BACK_BUFFER = 1; // in ms\n\nconst CHECK_BUFFER_DELAY = 500;\nconst finite = num => typeof num === 'number' && isFinite(num); // With most content hovering around 30fps, if a segment has a duration less than a half\n// frame at 30fps or one frame at 60fps, the bandwidth and throughput calculations will\n// not accurately reflect the rest of the content.\n\nconst MIN_SEGMENT_DURATION_TO_SAVE_STATS = 1 / 60;\nconst illegalMediaSwitch = (loaderType, startingMedia, trackInfo) => {\n // Although these checks should most likely cover non 'main' types, for now it narrows\n // the scope of our checks.\n if (loaderType !== 'main' || !startingMedia || !trackInfo) {\n return null;\n }\n if (!trackInfo.hasAudio && !trackInfo.hasVideo) {\n return 'Neither audio nor video found in segment.';\n }\n if (startingMedia.hasVideo && !trackInfo.hasVideo) {\n return 'Only audio found in segment when we expected video.' + ' We can\\'t switch to audio only from a stream that had video.' + ' To get rid of this message, please add codec information to the manifest.';\n }\n if (!startingMedia.hasVideo && trackInfo.hasVideo) {\n return 'Video found in segment when we expected only audio.' + ' We can\\'t switch to a stream with video from an audio only stream.' + ' To get rid of this message, please add codec information to the manifest.';\n }\n return null;\n};\n/**\n * Calculates a time value that is safe to remove from the back buffer without interrupting\n * playback.\n *\n * @param {TimeRange} seekable\n * The current seekable range\n * @param {number} currentTime\n * The current time of the player\n * @param {number} targetDuration\n * The target duration of the current playlist\n * @return {number}\n * Time that is safe to remove from the back buffer without interrupting playback\n */\n\nconst safeBackBufferTrimTime = (seekable, currentTime, targetDuration) => {\n // 30 seconds before the playhead provides a safe default for trimming.\n //\n // Choosing a reasonable default is particularly important for high bitrate content and\n // VOD videos/live streams with large windows, as the buffer may end up overfilled and\n // throw an APPEND_BUFFER_ERR.\n let trimTime = currentTime - Config.BACK_BUFFER_LENGTH;\n if (seekable.length) {\n // Some live playlists may have a shorter window of content than the full allowed back\n // buffer. For these playlists, don't save content that's no longer within the window.\n trimTime = Math.max(trimTime, seekable.start(0));\n } // Don't remove within target duration of the current time to avoid the possibility of\n // removing the GOP currently being played, as removing it can cause playback stalls.\n\n const maxTrimTime = currentTime - targetDuration;\n return Math.min(maxTrimTime, trimTime);\n};\nconst segmentInfoString = segmentInfo => {\n const {\n startOfSegment,\n duration,\n segment,\n part,\n playlist: {\n mediaSequence: seq,\n id,\n segments = []\n },\n mediaIndex: index,\n partIndex,\n timeline\n } = segmentInfo;\n const segmentLen = segments.length - 1;\n let selection = 'mediaIndex/partIndex increment';\n if (segmentInfo.getMediaInfoForTime) {\n selection = `getMediaInfoForTime (${segmentInfo.getMediaInfoForTime})`;\n } else if (segmentInfo.isSyncRequest) {\n selection = 'getSyncSegmentCandidate (isSyncRequest)';\n }\n if (segmentInfo.independent) {\n selection += ` with independent ${segmentInfo.independent}`;\n }\n const hasPartIndex = typeof partIndex === 'number';\n const name = segmentInfo.segment.uri ? 'segment' : 'pre-segment';\n const zeroBasedPartCount = hasPartIndex ? getKnownPartCount({\n preloadSegment: segment\n }) - 1 : 0;\n return `${name} [${seq + index}/${seq + segmentLen}]` + (hasPartIndex ? ` part [${partIndex}/${zeroBasedPartCount}]` : '') + ` segment start/end [${segment.start} => ${segment.end}]` + (hasPartIndex ? ` part start/end [${part.start} => ${part.end}]` : '') + ` startOfSegment [${startOfSegment}]` + ` duration [${duration}]` + ` timeline [${timeline}]` + ` selected by [${selection}]` + ` playlist [${id}]`;\n};\nconst timingInfoPropertyForMedia = mediaType => `${mediaType}TimingInfo`;\nconst getBufferedEndOrFallback = (buffered, fallback) => buffered.length ? buffered.end(buffered.length - 1) : fallback;\n/**\n * Returns the timestamp offset to use for the segment.\n *\n * @param {number} segmentTimeline\n * The timeline of the segment\n * @param {number} currentTimeline\n * The timeline currently being followed by the loader\n * @param {number} startOfSegment\n * The estimated segment start\n * @param {TimeRange[]} buffered\n * The loader's buffer\n * @param {boolean} calculateTimestampOffsetForEachSegment\n * Feature flag to always calculate timestampOffset\n * @param {boolean} overrideCheck\n * If true, no checks are made to see if the timestamp offset value should be set,\n * but sets it directly to a value.\n *\n * @return {number|null}\n * Either a number representing a new timestamp offset, or null if the segment is\n * part of the same timeline\n */\n\nconst timestampOffsetForSegment = ({\n segmentTimeline,\n currentTimeline,\n startOfSegment,\n buffered,\n calculateTimestampOffsetForEachSegment,\n overrideCheck\n}) => {\n if (calculateTimestampOffsetForEachSegment) {\n return getBufferedEndOrFallback(buffered, startOfSegment);\n } // Check to see if we are crossing a discontinuity to see if we need to set the\n // timestamp offset on the transmuxer and source buffer.\n //\n // Previously, we changed the timestampOffset if the start of this segment was less than\n // the currently set timestampOffset, but this isn't desirable as it can produce bad\n // behavior, especially around long running live streams.\n\n if (!overrideCheck && segmentTimeline === currentTimeline) {\n return null;\n } // When changing renditions, it's possible to request a segment on an older timeline. For\n // instance, given two renditions with the following:\n //\n // #EXTINF:10\n // segment1\n // #EXT-X-DISCONTINUITY\n // #EXTINF:10\n // segment2\n // #EXTINF:10\n // segment3\n //\n // And the current player state:\n //\n // current time: 8\n // buffer: 0 => 20\n //\n // The next segment on the current rendition would be segment3, filling the buffer from\n // 20s onwards. However, if a rendition switch happens after segment2 was requested,\n // then the next segment to be requested will be segment1 from the new rendition in\n // order to fill time 8 and onwards. Using the buffered end would result in repeated\n // content (since it would position segment1 of the new rendition starting at 20s). This\n // case can be identified when the new segment's timeline is a prior value. Instead of\n // using the buffered end, the startOfSegment can be used, which, hopefully, will be\n // more accurate to the actual start time of the segment.\n\n if (segmentTimeline < currentTimeline) {\n return startOfSegment;\n } // segmentInfo.startOfSegment used to be used as the timestamp offset, however, that\n // value uses the end of the last segment if it is available. While this value\n // should often be correct, it's better to rely on the buffered end, as the new\n // content post discontinuity should line up with the buffered end as if it were\n // time 0 for the new content.\n\n return getBufferedEndOrFallback(buffered, startOfSegment);\n};\n/**\n * Returns whether or not the loader should wait for a timeline change from the timeline\n * change controller before processing the segment.\n *\n * Primary timing in VHS goes by video. This is different from most media players, as\n * audio is more often used as the primary timing source. For the foreseeable future, VHS\n * will continue to use video as the primary timing source, due to the current logic and\n * expectations built around it.\n\n * Since the timing follows video, in order to maintain sync, the video loader is\n * responsible for setting both audio and video source buffer timestamp offsets.\n *\n * Setting different values for audio and video source buffers could lead to\n * desyncing. The following examples demonstrate some of the situations where this\n * distinction is important. Note that all of these cases involve demuxed content. When\n * content is muxed, the audio and video are packaged together, therefore syncing\n * separate media playlists is not an issue.\n *\n * CASE 1: Audio prepares to load a new timeline before video:\n *\n * Timeline: 0 1\n * Audio Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n * Audio Loader: ^\n * Video Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n * Video Loader ^\n *\n * In the above example, the audio loader is preparing to load the 6th segment, the first\n * after a discontinuity, while the video loader is still loading the 5th segment, before\n * the discontinuity.\n *\n * If the audio loader goes ahead and loads and appends the 6th segment before the video\n * loader crosses the discontinuity, then when appended, the 6th audio segment will use\n * the timestamp offset from timeline 0. This will likely lead to desyncing. In addition,\n * the audio loader must provide the audioAppendStart value to trim the content in the\n * transmuxer, and that value relies on the audio timestamp offset. Since the audio\n * timestamp offset is set by the video (main) loader, the audio loader shouldn't load the\n * segment until that value is provided.\n *\n * CASE 2: Video prepares to load a new timeline before audio:\n *\n * Timeline: 0 1\n * Audio Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n * Audio Loader: ^\n * Video Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n * Video Loader ^\n *\n * In the above example, the video loader is preparing to load the 6th segment, the first\n * after a discontinuity, while the audio loader is still loading the 5th segment, before\n * the discontinuity.\n *\n * If the video loader goes ahead and loads and appends the 6th segment, then once the\n * segment is loaded and processed, both the video and audio timestamp offsets will be\n * set, since video is used as the primary timing source. This is to ensure content lines\n * up appropriately, as any modifications to the video timing are reflected by audio when\n * the video loader sets the audio and video timestamp offsets to the same value. However,\n * setting the timestamp offset for audio before audio has had a chance to change\n * timelines will likely lead to desyncing, as the audio loader will append segment 5 with\n * a timestamp intended to apply to segments from timeline 1 rather than timeline 0.\n *\n * CASE 3: When seeking, audio prepares to load a new timeline before video\n *\n * Timeline: 0 1\n * Audio Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n * Audio Loader: ^\n * Video Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n * Video Loader ^\n *\n * In the above example, both audio and video loaders are loading segments from timeline\n * 0, but imagine that the seek originated from timeline 1.\n *\n * When seeking to a new timeline, the timestamp offset will be set based on the expected\n * segment start of the loaded video segment. In order to maintain sync, the audio loader\n * must wait for the video loader to load its segment and update both the audio and video\n * timestamp offsets before it may load and append its own segment. This is the case\n * whether the seek results in a mismatched segment request (e.g., the audio loader\n * chooses to load segment 3 and the video loader chooses to load segment 4) or the\n * loaders choose to load the same segment index from each playlist, as the segments may\n * not be aligned perfectly, even for matching segment indexes.\n *\n * @param {Object} timelinechangeController\n * @param {number} currentTimeline\n * The timeline currently being followed by the loader\n * @param {number} segmentTimeline\n * The timeline of the segment being loaded\n * @param {('main'|'audio')} loaderType\n * The loader type\n * @param {boolean} audioDisabled\n * Whether the audio is disabled for the loader. This should only be true when the\n * loader may have muxed audio in its segment, but should not append it, e.g., for\n * the main loader when an alternate audio playlist is active.\n *\n * @return {boolean}\n * Whether the loader should wait for a timeline change from the timeline change\n * controller before processing the segment\n */\n\nconst shouldWaitForTimelineChange = ({\n timelineChangeController,\n currentTimeline,\n segmentTimeline,\n loaderType,\n audioDisabled\n}) => {\n if (currentTimeline === segmentTimeline) {\n return false;\n }\n if (loaderType === 'audio') {\n const lastMainTimelineChange = timelineChangeController.lastTimelineChange({\n type: 'main'\n }); // Audio loader should wait if:\n //\n // * main hasn't had a timeline change yet (thus has not loaded its first segment)\n // * main hasn't yet changed to the timeline audio is looking to load\n\n return !lastMainTimelineChange || lastMainTimelineChange.to !== segmentTimeline;\n } // The main loader only needs to wait for timeline changes if there's demuxed audio.\n // Otherwise, there's nothing to wait for, since audio would be muxed into the main\n // loader's segments (or the content is audio/video only and handled by the main\n // loader).\n\n if (loaderType === 'main' && audioDisabled) {\n const pendingAudioTimelineChange = timelineChangeController.pendingTimelineChange({\n type: 'audio'\n }); // Main loader should wait for the audio loader if audio is not pending a timeline\n // change to the current timeline.\n //\n // Since the main loader is responsible for setting the timestamp offset for both\n // audio and video, the main loader must wait for audio to be about to change to its\n // timeline before setting the offset, otherwise, if audio is behind in loading,\n // segments from the previous timeline would be adjusted by the new timestamp offset.\n //\n // This requirement means that video will not cross a timeline until the audio is\n // about to cross to it, so that way audio and video will always cross the timeline\n // together.\n //\n // In addition to normal timeline changes, these rules also apply to the start of a\n // stream (going from a non-existent timeline, -1, to timeline 0). It's important\n // that these rules apply to the first timeline change because if they did not, it's\n // possible that the main loader will cross two timelines before the audio loader has\n // crossed one. Logic may be implemented to handle the startup as a special case, but\n // it's easier to simply treat all timeline changes the same.\n\n if (pendingAudioTimelineChange && pendingAudioTimelineChange.to === segmentTimeline) {\n return false;\n }\n return true;\n }\n return false;\n};\nconst mediaDuration = timingInfos => {\n let maxDuration = 0;\n ['video', 'audio'].forEach(function (type) {\n const typeTimingInfo = timingInfos[`${type}TimingInfo`];\n if (!typeTimingInfo) {\n return;\n }\n const {\n start,\n end\n } = typeTimingInfo;\n let duration;\n if (typeof start === 'bigint' || typeof end === 'bigint') {\n duration = window$1.BigInt(end) - window$1.BigInt(start);\n } else if (typeof start === 'number' && typeof end === 'number') {\n duration = end - start;\n }\n if (typeof duration !== 'undefined' && duration > maxDuration) {\n maxDuration = duration;\n }\n }); // convert back to a number if it is lower than MAX_SAFE_INTEGER\n // as we only need BigInt when we are above that.\n\n if (typeof maxDuration === 'bigint' && maxDuration < Number.MAX_SAFE_INTEGER) {\n maxDuration = Number(maxDuration);\n }\n return maxDuration;\n};\nconst segmentTooLong = ({\n segmentDuration,\n maxDuration\n}) => {\n // 0 duration segments are most likely due to metadata only segments or a lack of\n // information.\n if (!segmentDuration) {\n return false;\n } // For HLS:\n //\n // https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.3.1\n // The EXTINF duration of each Media Segment in the Playlist\n // file, when rounded to the nearest integer, MUST be less than or equal\n // to the target duration; longer segments can trigger playback stalls\n // or other errors.\n //\n // For DASH, the mpd-parser uses the largest reported segment duration as the target\n // duration. Although that reported duration is occasionally approximate (i.e., not\n // exact), a strict check may report that a segment is too long more often in DASH.\n\n return Math.round(segmentDuration) > maxDuration + TIME_FUDGE_FACTOR;\n};\nconst getTroublesomeSegmentDurationMessage = (segmentInfo, sourceType) => {\n // Right now we aren't following DASH's timing model exactly, so only perform\n // this check for HLS content.\n if (sourceType !== 'hls') {\n return null;\n }\n const segmentDuration = mediaDuration({\n audioTimingInfo: segmentInfo.audioTimingInfo,\n videoTimingInfo: segmentInfo.videoTimingInfo\n }); // Don't report if we lack information.\n //\n // If the segment has a duration of 0 it is either a lack of information or a\n // metadata only segment and shouldn't be reported here.\n\n if (!segmentDuration) {\n return null;\n }\n const targetDuration = segmentInfo.playlist.targetDuration;\n const isSegmentWayTooLong = segmentTooLong({\n segmentDuration,\n maxDuration: targetDuration * 2\n });\n const isSegmentSlightlyTooLong = segmentTooLong({\n segmentDuration,\n maxDuration: targetDuration\n });\n const segmentTooLongMessage = `Segment with index ${segmentInfo.mediaIndex} ` + `from playlist ${segmentInfo.playlist.id} ` + `has a duration of ${segmentDuration} ` + `when the reported duration is ${segmentInfo.duration} ` + `and the target duration is ${targetDuration}. ` + 'For HLS content, a duration in excess of the target duration may result in ' + 'playback issues. See the HLS specification section on EXT-X-TARGETDURATION for ' + 'more details: ' + 'https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.3.1';\n if (isSegmentWayTooLong || isSegmentSlightlyTooLong) {\n return {\n severity: isSegmentWayTooLong ? 'warn' : 'info',\n message: segmentTooLongMessage\n };\n }\n return null;\n};\n/**\n * An object that manages segment loading and appending.\n *\n * @class SegmentLoader\n * @param {Object} options required and optional options\n * @extends videojs.EventTarget\n */\n\nclass SegmentLoader extends videojs.EventTarget {\n constructor(settings, options = {}) {\n super(); // check pre-conditions\n\n if (!settings) {\n throw new TypeError('Initialization settings are required');\n }\n if (typeof settings.currentTime !== 'function') {\n throw new TypeError('No currentTime getter specified');\n }\n if (!settings.mediaSource) {\n throw new TypeError('No MediaSource specified');\n } // public properties\n\n this.bandwidth = settings.bandwidth;\n this.throughput = {\n rate: 0,\n count: 0\n };\n this.roundTrip = NaN;\n this.resetStats_();\n this.mediaIndex = null;\n this.partIndex = null; // private settings\n\n this.hasPlayed_ = settings.hasPlayed;\n this.currentTime_ = settings.currentTime;\n this.seekable_ = settings.seekable;\n this.seeking_ = settings.seeking;\n this.duration_ = settings.duration;\n this.mediaSource_ = settings.mediaSource;\n this.vhs_ = settings.vhs;\n this.loaderType_ = settings.loaderType;\n this.currentMediaInfo_ = void 0;\n this.startingMediaInfo_ = void 0;\n this.segmentMetadataTrack_ = settings.segmentMetadataTrack;\n this.goalBufferLength_ = settings.goalBufferLength;\n this.sourceType_ = settings.sourceType;\n this.sourceUpdater_ = settings.sourceUpdater;\n this.inbandTextTracks_ = settings.inbandTextTracks;\n this.state_ = 'INIT';\n this.timelineChangeController_ = settings.timelineChangeController;\n this.shouldSaveSegmentTimingInfo_ = true;\n this.parse708captions_ = settings.parse708captions;\n this.useDtsForTimestampOffset_ = settings.useDtsForTimestampOffset;\n this.calculateTimestampOffsetForEachSegment_ = settings.calculateTimestampOffsetForEachSegment;\n this.captionServices_ = settings.captionServices;\n this.exactManifestTimings = settings.exactManifestTimings;\n this.addMetadataToTextTrack = settings.addMetadataToTextTrack; // private instance variables\n\n this.checkBufferTimeout_ = null;\n this.error_ = void 0;\n this.currentTimeline_ = -1;\n this.pendingSegment_ = null;\n this.xhrOptions_ = null;\n this.pendingSegments_ = [];\n this.audioDisabled_ = false;\n this.isPendingTimestampOffset_ = false; // TODO possibly move gopBuffer and timeMapping info to a separate controller\n\n this.gopBuffer_ = [];\n this.timeMapping_ = 0;\n this.safeAppend_ = false;\n this.appendInitSegment_ = {\n audio: true,\n video: true\n };\n this.playlistOfLastInitSegment_ = {\n audio: null,\n video: null\n };\n this.callQueue_ = []; // If the segment loader prepares to load a segment, but does not have enough\n // information yet to start the loading process (e.g., if the audio loader wants to\n // load a segment from the next timeline but the main loader hasn't yet crossed that\n // timeline), then the load call will be added to the queue until it is ready to be\n // processed.\n\n this.loadQueue_ = [];\n this.metadataQueue_ = {\n id3: [],\n caption: []\n };\n this.waitingOnRemove_ = false;\n this.quotaExceededErrorRetryTimeout_ = null; // Fragmented mp4 playback\n\n this.activeInitSegmentId_ = null;\n this.initSegments_ = {}; // HLSe playback\n\n this.cacheEncryptionKeys_ = settings.cacheEncryptionKeys;\n this.keyCache_ = {};\n this.decrypter_ = settings.decrypter; // Manages the tracking and generation of sync-points, mappings\n // between a time in the display time and a segment index within\n // a playlist\n\n this.syncController_ = settings.syncController;\n this.syncPoint_ = {\n segmentIndex: 0,\n time: 0\n };\n this.transmuxer_ = this.createTransmuxer_();\n this.triggerSyncInfoUpdate_ = () => this.trigger('syncinfoupdate');\n this.syncController_.on('syncinfoupdate', this.triggerSyncInfoUpdate_);\n this.mediaSource_.addEventListener('sourceopen', () => {\n if (!this.isEndOfStream_()) {\n this.ended_ = false;\n }\n }); // ...for determining the fetch location\n\n this.fetchAtBuffer_ = false; // For comparing with currentTime when overwriting segments on fastQualityChange_ changes. Use -1 as the inactive flag.\n\n this.replaceSegmentsUntil_ = -1;\n this.logger_ = logger(`SegmentLoader[${this.loaderType_}]`);\n Object.defineProperty(this, 'state', {\n get() {\n return this.state_;\n },\n set(newState) {\n if (newState !== this.state_) {\n this.logger_(`${this.state_} -> ${newState}`);\n this.state_ = newState;\n this.trigger('statechange');\n }\n }\n });\n this.sourceUpdater_.on('ready', () => {\n if (this.hasEnoughInfoToAppend_()) {\n this.processCallQueue_();\n }\n }); // Only the main loader needs to listen for pending timeline changes, as the main\n // loader should wait for audio to be ready to change its timeline so that both main\n // and audio timelines change together. For more details, see the\n // shouldWaitForTimelineChange function.\n\n if (this.loaderType_ === 'main') {\n this.timelineChangeController_.on('pendingtimelinechange', () => {\n if (this.hasEnoughInfoToAppend_()) {\n this.processCallQueue_();\n }\n });\n } // The main loader only listens on pending timeline changes, but the audio loader,\n // since its loads follow main, needs to listen on timeline changes. For more details,\n // see the shouldWaitForTimelineChange function.\n\n if (this.loaderType_ === 'audio') {\n this.timelineChangeController_.on('timelinechange', () => {\n if (this.hasEnoughInfoToLoad_()) {\n this.processLoadQueue_();\n }\n if (this.hasEnoughInfoToAppend_()) {\n this.processCallQueue_();\n }\n });\n }\n }\n createTransmuxer_() {\n return segmentTransmuxer.createTransmuxer({\n remux: false,\n alignGopsAtEnd: this.safeAppend_,\n keepOriginalTimestamps: true,\n parse708captions: this.parse708captions_,\n captionServices: this.captionServices_\n });\n }\n /**\n * reset all of our media stats\n *\n * @private\n */\n\n resetStats_() {\n this.mediaBytesTransferred = 0;\n this.mediaRequests = 0;\n this.mediaRequestsAborted = 0;\n this.mediaRequestsTimedout = 0;\n this.mediaRequestsErrored = 0;\n this.mediaTransferDuration = 0;\n this.mediaSecondsLoaded = 0;\n this.mediaAppends = 0;\n }\n /**\n * dispose of the SegmentLoader and reset to the default state\n */\n\n dispose() {\n this.trigger('dispose');\n this.state = 'DISPOSED';\n this.pause();\n this.abort_();\n if (this.transmuxer_) {\n this.transmuxer_.terminate();\n }\n this.resetStats_();\n if (this.checkBufferTimeout_) {\n window$1.clearTimeout(this.checkBufferTimeout_);\n }\n if (this.syncController_ && this.triggerSyncInfoUpdate_) {\n this.syncController_.off('syncinfoupdate', this.triggerSyncInfoUpdate_);\n }\n this.off();\n }\n setAudio(enable) {\n this.audioDisabled_ = !enable;\n if (enable) {\n this.appendInitSegment_.audio = true;\n } else {\n // remove current track audio if it gets disabled\n this.sourceUpdater_.removeAudio(0, this.duration_());\n }\n }\n /**\n * abort anything that is currently doing on with the SegmentLoader\n * and reset to a default state\n */\n\n abort() {\n if (this.state !== 'WAITING') {\n if (this.pendingSegment_) {\n this.pendingSegment_ = null;\n }\n return;\n }\n this.abort_(); // We aborted the requests we were waiting on, so reset the loader's state to READY\n // since we are no longer \"waiting\" on any requests. XHR callback is not always run\n // when the request is aborted. This will prevent the loader from being stuck in the\n // WAITING state indefinitely.\n\n this.state = 'READY'; // don't wait for buffer check timeouts to begin fetching the\n // next segment\n\n if (!this.paused()) {\n this.monitorBuffer_();\n }\n }\n /**\n * abort all pending xhr requests and null any pending segements\n *\n * @private\n */\n\n abort_() {\n if (this.pendingSegment_ && this.pendingSegment_.abortRequests) {\n this.pendingSegment_.abortRequests();\n } // clear out the segment being processed\n\n this.pendingSegment_ = null;\n this.callQueue_ = [];\n this.loadQueue_ = [];\n this.metadataQueue_.id3 = [];\n this.metadataQueue_.caption = [];\n this.timelineChangeController_.clearPendingTimelineChange(this.loaderType_);\n this.waitingOnRemove_ = false;\n window$1.clearTimeout(this.quotaExceededErrorRetryTimeout_);\n this.quotaExceededErrorRetryTimeout_ = null;\n }\n checkForAbort_(requestId) {\n // If the state is APPENDING, then aborts will not modify the state, meaning the first\n // callback that happens should reset the state to READY so that loading can continue.\n if (this.state === 'APPENDING' && !this.pendingSegment_) {\n this.state = 'READY';\n return true;\n }\n if (!this.pendingSegment_ || this.pendingSegment_.requestId !== requestId) {\n return true;\n }\n return false;\n }\n /**\n * set an error on the segment loader and null out any pending segements\n *\n * @param {Error} error the error to set on the SegmentLoader\n * @return {Error} the error that was set or that is currently set\n */\n\n error(error) {\n if (typeof error !== 'undefined') {\n this.logger_('error occurred:', error);\n this.error_ = error;\n }\n this.pendingSegment_ = null;\n return this.error_;\n }\n endOfStream() {\n this.ended_ = true;\n if (this.transmuxer_) {\n // need to clear out any cached data to prepare for the new segment\n segmentTransmuxer.reset(this.transmuxer_);\n }\n this.gopBuffer_.length = 0;\n this.pause();\n this.trigger('ended');\n }\n /**\n * Indicates which time ranges are buffered\n *\n * @return {TimeRange}\n * TimeRange object representing the current buffered ranges\n */\n\n buffered_() {\n const trackInfo = this.getMediaInfo_();\n if (!this.sourceUpdater_ || !trackInfo) {\n return createTimeRanges();\n }\n if (this.loaderType_ === 'main') {\n const {\n hasAudio,\n hasVideo,\n isMuxed\n } = trackInfo;\n if (hasVideo && hasAudio && !this.audioDisabled_ && !isMuxed) {\n return this.sourceUpdater_.buffered();\n }\n if (hasVideo) {\n return this.sourceUpdater_.videoBuffered();\n }\n } // One case that can be ignored for now is audio only with alt audio,\n // as we don't yet have proper support for that.\n\n return this.sourceUpdater_.audioBuffered();\n }\n /**\n * Gets and sets init segment for the provided map\n *\n * @param {Object} map\n * The map object representing the init segment to get or set\n * @param {boolean=} set\n * If true, the init segment for the provided map should be saved\n * @return {Object}\n * map object for desired init segment\n */\n\n initSegmentForMap(map, set = false) {\n if (!map) {\n return null;\n }\n const id = initSegmentId(map);\n let storedMap = this.initSegments_[id];\n if (set && !storedMap && map.bytes) {\n this.initSegments_[id] = storedMap = {\n resolvedUri: map.resolvedUri,\n byterange: map.byterange,\n bytes: map.bytes,\n tracks: map.tracks,\n timescales: map.timescales\n };\n }\n return storedMap || map;\n }\n /**\n * Gets and sets key for the provided key\n *\n * @param {Object} key\n * The key object representing the key to get or set\n * @param {boolean=} set\n * If true, the key for the provided key should be saved\n * @return {Object}\n * Key object for desired key\n */\n\n segmentKey(key, set = false) {\n if (!key) {\n return null;\n }\n const id = segmentKeyId(key);\n let storedKey = this.keyCache_[id]; // TODO: We should use the HTTP Expires header to invalidate our cache per\n // https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-6.2.3\n\n if (this.cacheEncryptionKeys_ && set && !storedKey && key.bytes) {\n this.keyCache_[id] = storedKey = {\n resolvedUri: key.resolvedUri,\n bytes: key.bytes\n };\n }\n const result = {\n resolvedUri: (storedKey || key).resolvedUri\n };\n if (storedKey) {\n result.bytes = storedKey.bytes;\n }\n return result;\n }\n /**\n * Returns true if all configuration required for loading is present, otherwise false.\n *\n * @return {boolean} True if the all configuration is ready for loading\n * @private\n */\n\n couldBeginLoading_() {\n return this.playlist_ && !this.paused();\n }\n /**\n * load a playlist and start to fill the buffer\n */\n\n load() {\n // un-pause\n this.monitorBuffer_(); // if we don't have a playlist yet, keep waiting for one to be\n // specified\n\n if (!this.playlist_) {\n return;\n } // if all the configuration is ready, initialize and begin loading\n\n if (this.state === 'INIT' && this.couldBeginLoading_()) {\n return this.init_();\n } // if we're in the middle of processing a segment already, don't\n // kick off an additional segment request\n\n if (!this.couldBeginLoading_() || this.state !== 'READY' && this.state !== 'INIT') {\n return;\n }\n this.state = 'READY';\n }\n /**\n * Once all the starting parameters have been specified, begin\n * operation. This method should only be invoked from the INIT\n * state.\n *\n * @private\n */\n\n init_() {\n this.state = 'READY'; // if this is the audio segment loader, and it hasn't been inited before, then any old\n // audio data from the muxed content should be removed\n\n this.resetEverything();\n return this.monitorBuffer_();\n }\n /**\n * set a playlist on the segment loader\n *\n * @param {PlaylistLoader} media the playlist to set on the segment loader\n */\n\n playlist(newPlaylist, options = {}) {\n if (!newPlaylist) {\n return;\n }\n const oldPlaylist = this.playlist_;\n const segmentInfo = this.pendingSegment_;\n this.playlist_ = newPlaylist;\n this.xhrOptions_ = options; // when we haven't started playing yet, the start of a live playlist\n // is always our zero-time so force a sync update each time the playlist\n // is refreshed from the server\n //\n // Use the INIT state to determine if playback has started, as the playlist sync info\n // should be fixed once requests begin (as sync points are generated based on sync\n // info), but not before then.\n\n if (this.state === 'INIT') {\n newPlaylist.syncInfo = {\n mediaSequence: newPlaylist.mediaSequence,\n time: 0\n }; // Setting the date time mapping means mapping the program date time (if available)\n // to time 0 on the player's timeline. The playlist's syncInfo serves a similar\n // purpose, mapping the initial mediaSequence to time zero. Since the syncInfo can\n // be updated as the playlist is refreshed before the loader starts loading, the\n // program date time mapping needs to be updated as well.\n //\n // This mapping is only done for the main loader because a program date time should\n // map equivalently between playlists.\n\n if (this.loaderType_ === 'main') {\n this.syncController_.setDateTimeMappingForStart(newPlaylist);\n }\n }\n let oldId = null;\n if (oldPlaylist) {\n if (oldPlaylist.id) {\n oldId = oldPlaylist.id;\n } else if (oldPlaylist.uri) {\n oldId = oldPlaylist.uri;\n }\n }\n this.logger_(`playlist update [${oldId} => ${newPlaylist.id || newPlaylist.uri}]`); // in VOD, this is always a rendition switch (or we updated our syncInfo above)\n // in LIVE, we always want to update with new playlists (including refreshes)\n\n this.trigger('syncinfoupdate'); // if we were unpaused but waiting for a playlist, start\n // buffering now\n\n if (this.state === 'INIT' && this.couldBeginLoading_()) {\n return this.init_();\n }\n if (!oldPlaylist || oldPlaylist.uri !== newPlaylist.uri) {\n if (this.mediaIndex !== null) {\n // we must reset/resync the segment loader when we switch renditions and\n // the segment loader is already synced to the previous rendition\n // We only want to reset the loader here for LLHLS playback, as resetLoader sets fetchAtBuffer_\n // to false, resulting in fetching segments at currentTime and causing repeated\n // same-segment requests on playlist change. This erroneously drives up the playback watcher\n // stalled segment count, as re-requesting segments at the currentTime or browser cached segments\n // will not change the buffer.\n // Reference for LLHLS fixes: https://github.com/videojs/http-streaming/pull/1201\n const isLLHLS = !newPlaylist.endList && typeof newPlaylist.partTargetDuration === 'number';\n if (isLLHLS) {\n this.resetLoader();\n } else {\n this.resyncLoader();\n }\n }\n this.currentMediaInfo_ = void 0;\n this.trigger('playlistupdate'); // the rest of this function depends on `oldPlaylist` being defined\n\n return;\n } // we reloaded the same playlist so we are in a live scenario\n // and we will likely need to adjust the mediaIndex\n\n const mediaSequenceDiff = newPlaylist.mediaSequence - oldPlaylist.mediaSequence;\n this.logger_(`live window shift [${mediaSequenceDiff}]`); // update the mediaIndex on the SegmentLoader\n // this is important because we can abort a request and this value must be\n // equal to the last appended mediaIndex\n\n if (this.mediaIndex !== null) {\n this.mediaIndex -= mediaSequenceDiff; // this can happen if we are going to load the first segment, but get a playlist\n // update during that. mediaIndex would go from 0 to -1 if mediaSequence in the\n // new playlist was incremented by 1.\n\n if (this.mediaIndex < 0) {\n this.mediaIndex = null;\n this.partIndex = null;\n } else {\n const segment = this.playlist_.segments[this.mediaIndex]; // partIndex should remain the same for the same segment\n // unless parts fell off of the playlist for this segment.\n // In that case we need to reset partIndex and resync\n\n if (this.partIndex && (!segment.parts || !segment.parts.length || !segment.parts[this.partIndex])) {\n const mediaIndex = this.mediaIndex;\n this.logger_(`currently processing part (index ${this.partIndex}) no longer exists.`);\n this.resetLoader(); // We want to throw away the partIndex and the data associated with it,\n // as the part was dropped from our current playlists segment.\n // The mediaIndex will still be valid so keep that around.\n\n this.mediaIndex = mediaIndex;\n }\n }\n } // update the mediaIndex on the SegmentInfo object\n // this is important because we will update this.mediaIndex with this value\n // in `handleAppendsDone_` after the segment has been successfully appended\n\n if (segmentInfo) {\n segmentInfo.mediaIndex -= mediaSequenceDiff;\n if (segmentInfo.mediaIndex < 0) {\n segmentInfo.mediaIndex = null;\n segmentInfo.partIndex = null;\n } else {\n // we need to update the referenced segment so that timing information is\n // saved for the new playlist's segment, however, if the segment fell off the\n // playlist, we can leave the old reference and just lose the timing info\n if (segmentInfo.mediaIndex >= 0) {\n segmentInfo.segment = newPlaylist.segments[segmentInfo.mediaIndex];\n }\n if (segmentInfo.partIndex >= 0 && segmentInfo.segment.parts) {\n segmentInfo.part = segmentInfo.segment.parts[segmentInfo.partIndex];\n }\n }\n }\n this.syncController_.saveExpiredSegmentInfo(oldPlaylist, newPlaylist);\n }\n /**\n * Prevent the loader from fetching additional segments. If there\n * is a segment request outstanding, it will finish processing\n * before the loader halts. A segment loader can be unpaused by\n * calling load().\n */\n\n pause() {\n if (this.checkBufferTimeout_) {\n window$1.clearTimeout(this.checkBufferTimeout_);\n this.checkBufferTimeout_ = null;\n }\n }\n /**\n * Returns whether the segment loader is fetching additional\n * segments when given the opportunity. This property can be\n * modified through calls to pause() and load().\n */\n\n paused() {\n return this.checkBufferTimeout_ === null;\n }\n /**\n * Resets the segment loader ended and init properties.\n */\n\n resetLoaderProperties() {\n this.ended_ = false;\n this.activeInitSegmentId_ = null;\n this.appendInitSegment_ = {\n audio: true,\n video: true\n };\n }\n /**\n * Delete all the buffered data and reset the SegmentLoader\n *\n * @param {Function} [done] an optional callback to be executed when the remove\n * operation is complete\n */\n\n resetEverything(done) {\n this.resetLoaderProperties();\n this.resetLoader(); // remove from 0, the earliest point, to Infinity, to signify removal of everything.\n // VTT Segment Loader doesn't need to do anything but in the regular SegmentLoader,\n // we then clamp the value to duration if necessary.\n\n this.remove(0, Infinity, done); // clears fmp4 captions\n\n if (this.transmuxer_) {\n this.transmuxer_.postMessage({\n action: 'clearAllMp4Captions'\n }); // reset the cache in the transmuxer\n\n this.transmuxer_.postMessage({\n action: 'reset'\n });\n }\n }\n /**\n * Force the SegmentLoader to resync and start loading around the currentTime instead\n * of starting at the end of the buffer\n *\n * Useful for fast quality changes\n */\n\n resetLoader() {\n this.fetchAtBuffer_ = false;\n this.resyncLoader();\n }\n /**\n * Force the SegmentLoader to restart synchronization and make a conservative guess\n * before returning to the simple walk-forward method\n */\n\n resyncLoader() {\n if (this.transmuxer_) {\n // need to clear out any cached data to prepare for the new segment\n segmentTransmuxer.reset(this.transmuxer_);\n }\n this.mediaIndex = null;\n this.partIndex = null;\n this.syncPoint_ = null;\n this.isPendingTimestampOffset_ = false;\n this.callQueue_ = [];\n this.loadQueue_ = [];\n this.metadataQueue_.id3 = [];\n this.metadataQueue_.caption = [];\n this.abort();\n if (this.transmuxer_) {\n this.transmuxer_.postMessage({\n action: 'clearParsedMp4Captions'\n });\n }\n }\n /**\n * Remove any data in the source buffer between start and end times\n *\n * @param {number} start - the start time of the region to remove from the buffer\n * @param {number} end - the end time of the region to remove from the buffer\n * @param {Function} [done] - an optional callback to be executed when the remove\n * @param {boolean} force - force all remove operations to happen\n * operation is complete\n */\n\n remove(start, end, done = () => {}, force = false) {\n // clamp end to duration if we need to remove everything.\n // This is due to a browser bug that causes issues if we remove to Infinity.\n // videojs/videojs-contrib-hls#1225\n if (end === Infinity) {\n end = this.duration_();\n } // skip removes that would throw an error\n // commonly happens during a rendition switch at the start of a video\n // from start 0 to end 0\n\n if (end <= start) {\n this.logger_('skipping remove because end ${end} is <= start ${start}');\n return;\n }\n if (!this.sourceUpdater_ || !this.getMediaInfo_()) {\n this.logger_('skipping remove because no source updater or starting media info'); // nothing to remove if we haven't processed any media\n\n return;\n } // set it to one to complete this function's removes\n\n let removesRemaining = 1;\n const removeFinished = () => {\n removesRemaining--;\n if (removesRemaining === 0) {\n done();\n }\n };\n if (force || !this.audioDisabled_) {\n removesRemaining++;\n this.sourceUpdater_.removeAudio(start, end, removeFinished);\n } // While it would be better to only remove video if the main loader has video, this\n // should be safe with audio only as removeVideo will call back even if there's no\n // video buffer.\n //\n // In theory we can check to see if there's video before calling the remove, but in\n // the event that we're switching between renditions and from video to audio only\n // (when we add support for that), we may need to clear the video contents despite\n // what the new media will contain.\n\n if (force || this.loaderType_ === 'main') {\n this.gopBuffer_ = removeGopBuffer(this.gopBuffer_, start, end, this.timeMapping_);\n removesRemaining++;\n this.sourceUpdater_.removeVideo(start, end, removeFinished);\n } // remove any captions and ID3 tags\n\n for (const track in this.inbandTextTracks_) {\n removeCuesFromTrack(start, end, this.inbandTextTracks_[track]);\n }\n removeCuesFromTrack(start, end, this.segmentMetadataTrack_); // finished this function's removes\n\n removeFinished();\n }\n /**\n * (re-)schedule monitorBufferTick_ to run as soon as possible\n *\n * @private\n */\n\n monitorBuffer_() {\n if (this.checkBufferTimeout_) {\n window$1.clearTimeout(this.checkBufferTimeout_);\n }\n this.checkBufferTimeout_ = window$1.setTimeout(this.monitorBufferTick_.bind(this), 1);\n }\n /**\n * As long as the SegmentLoader is in the READY state, periodically\n * invoke fillBuffer_().\n *\n * @private\n */\n\n monitorBufferTick_() {\n if (this.state === 'READY') {\n this.fillBuffer_();\n }\n if (this.checkBufferTimeout_) {\n window$1.clearTimeout(this.checkBufferTimeout_);\n }\n this.checkBufferTimeout_ = window$1.setTimeout(this.monitorBufferTick_.bind(this), CHECK_BUFFER_DELAY);\n }\n /**\n * fill the buffer with segements unless the sourceBuffers are\n * currently updating\n *\n * Note: this function should only ever be called by monitorBuffer_\n * and never directly\n *\n * @private\n */\n\n fillBuffer_() {\n // TODO since the source buffer maintains a queue, and we shouldn't call this function\n // except when we're ready for the next segment, this check can most likely be removed\n if (this.sourceUpdater_.updating()) {\n return;\n } // see if we need to begin loading immediately\n\n const segmentInfo = this.chooseNextRequest_();\n if (!segmentInfo) {\n return;\n }\n if (typeof segmentInfo.timestampOffset === 'number') {\n this.isPendingTimestampOffset_ = false;\n this.timelineChangeController_.pendingTimelineChange({\n type: this.loaderType_,\n from: this.currentTimeline_,\n to: segmentInfo.timeline\n });\n }\n this.loadSegment_(segmentInfo);\n }\n /**\n * Determines if we should call endOfStream on the media source based\n * on the state of the buffer or if appened segment was the final\n * segment in the playlist.\n *\n * @param {number} [mediaIndex] the media index of segment we last appended\n * @param {Object} [playlist] a media playlist object\n * @return {boolean} do we need to call endOfStream on the MediaSource\n */\n\n isEndOfStream_(mediaIndex = this.mediaIndex, playlist = this.playlist_, partIndex = this.partIndex) {\n if (!playlist || !this.mediaSource_) {\n return false;\n }\n const segment = typeof mediaIndex === 'number' && playlist.segments[mediaIndex]; // mediaIndex is zero based but length is 1 based\n\n const appendedLastSegment = mediaIndex + 1 === playlist.segments.length; // true if there are no parts, or this is the last part.\n\n const appendedLastPart = !segment || !segment.parts || partIndex + 1 === segment.parts.length; // if we've buffered to the end of the video, we need to call endOfStream\n // so that MediaSources can trigger the `ended` event when it runs out of\n // buffered data instead of waiting for me\n\n return playlist.endList && this.mediaSource_.readyState === 'open' && appendedLastSegment && appendedLastPart;\n }\n /**\n * Determines what request should be made given current segment loader state.\n *\n * @return {Object} a request object that describes the segment/part to load\n */\n\n chooseNextRequest_() {\n const buffered = this.buffered_();\n const bufferedEnd = lastBufferedEnd(buffered) || 0;\n const bufferedTime = timeAheadOf(buffered, this.currentTime_());\n const preloaded = !this.hasPlayed_() && bufferedTime >= 1;\n const haveEnoughBuffer = bufferedTime >= this.goalBufferLength_();\n const segments = this.playlist_.segments; // return no segment if:\n // 1. we don't have segments\n // 2. The video has not yet played and we already downloaded a segment\n // 3. we already have enough buffered time\n\n if (!segments.length || preloaded || haveEnoughBuffer) {\n return null;\n }\n this.syncPoint_ = this.syncPoint_ || this.syncController_.getSyncPoint(this.playlist_, this.duration_(), this.currentTimeline_, this.currentTime_());\n const next = {\n partIndex: null,\n mediaIndex: null,\n startOfSegment: null,\n playlist: this.playlist_,\n isSyncRequest: Boolean(!this.syncPoint_)\n };\n if (next.isSyncRequest) {\n next.mediaIndex = getSyncSegmentCandidate(this.currentTimeline_, segments, bufferedEnd);\n } else if (this.mediaIndex !== null) {\n const segment = segments[this.mediaIndex];\n const partIndex = typeof this.partIndex === 'number' ? this.partIndex : -1;\n next.startOfSegment = segment.end ? segment.end : bufferedEnd;\n if (segment.parts && segment.parts[partIndex + 1]) {\n next.mediaIndex = this.mediaIndex;\n next.partIndex = partIndex + 1;\n } else {\n next.mediaIndex = this.mediaIndex + 1;\n }\n } else {\n // Find the segment containing the end of the buffer or current time.\n const {\n segmentIndex,\n startTime,\n partIndex\n } = Playlist.getMediaInfoForTime({\n exactManifestTimings: this.exactManifestTimings,\n playlist: this.playlist_,\n currentTime: this.fetchAtBuffer_ ? bufferedEnd : this.currentTime_(),\n startingPartIndex: this.syncPoint_.partIndex,\n startingSegmentIndex: this.syncPoint_.segmentIndex,\n startTime: this.syncPoint_.time\n });\n next.getMediaInfoForTime = this.fetchAtBuffer_ ? `bufferedEnd ${bufferedEnd}` : `currentTime ${this.currentTime_()}`;\n next.mediaIndex = segmentIndex;\n next.startOfSegment = startTime;\n next.partIndex = partIndex;\n }\n const nextSegment = segments[next.mediaIndex];\n let nextPart = nextSegment && typeof next.partIndex === 'number' && nextSegment.parts && nextSegment.parts[next.partIndex]; // if the next segment index is invalid or\n // the next partIndex is invalid do not choose a next segment.\n\n if (!nextSegment || typeof next.partIndex === 'number' && !nextPart) {\n return null;\n } // if the next segment has parts, and we don't have a partIndex.\n // Set partIndex to 0\n\n if (typeof next.partIndex !== 'number' && nextSegment.parts) {\n next.partIndex = 0;\n nextPart = nextSegment.parts[0];\n } // independentSegments applies to every segment in a playlist. If independentSegments appears in a main playlist,\n // it applies to each segment in each media playlist.\n // https://datatracker.ietf.org/doc/html/draft-pantos-http-live-streaming-23#section-4.3.5.1\n\n const hasIndependentSegments = this.vhs_.playlists && this.vhs_.playlists.main && this.vhs_.playlists.main.independentSegments || this.playlist_.independentSegments; // if we have no buffered data then we need to make sure\n // that the next part we append is \"independent\" if possible.\n // So we check if the previous part is independent, and request\n // it if it is.\n\n if (!bufferedTime && nextPart && !hasIndependentSegments && !nextPart.independent) {\n if (next.partIndex === 0) {\n const lastSegment = segments[next.mediaIndex - 1];\n const lastSegmentLastPart = lastSegment.parts && lastSegment.parts.length && lastSegment.parts[lastSegment.parts.length - 1];\n if (lastSegmentLastPart && lastSegmentLastPart.independent) {\n next.mediaIndex -= 1;\n next.partIndex = lastSegment.parts.length - 1;\n next.independent = 'previous segment';\n }\n } else if (nextSegment.parts[next.partIndex - 1].independent) {\n next.partIndex -= 1;\n next.independent = 'previous part';\n }\n }\n const ended = this.mediaSource_ && this.mediaSource_.readyState === 'ended'; // do not choose a next segment if all of the following:\n // 1. this is the last segment in the playlist\n // 2. end of stream has been called on the media source already\n // 3. the player is not seeking\n\n if (next.mediaIndex >= segments.length - 1 && ended && !this.seeking_()) {\n return null;\n }\n return this.generateSegmentInfo_(next);\n }\n generateSegmentInfo_(options) {\n const {\n independent,\n playlist,\n mediaIndex,\n startOfSegment,\n isSyncRequest,\n partIndex,\n forceTimestampOffset,\n getMediaInfoForTime\n } = options;\n const segment = playlist.segments[mediaIndex];\n const part = typeof partIndex === 'number' && segment.parts[partIndex];\n const segmentInfo = {\n requestId: 'segment-loader-' + Math.random(),\n // resolve the segment URL relative to the playlist\n uri: part && part.resolvedUri || segment.resolvedUri,\n // the segment's mediaIndex at the time it was requested\n mediaIndex,\n partIndex: part ? partIndex : null,\n // whether or not to update the SegmentLoader's state with this\n // segment's mediaIndex\n isSyncRequest,\n startOfSegment,\n // the segment's playlist\n playlist,\n // unencrypted bytes of the segment\n bytes: null,\n // when a key is defined for this segment, the encrypted bytes\n encryptedBytes: null,\n // The target timestampOffset for this segment when we append it\n // to the source buffer\n timestampOffset: null,\n // The timeline that the segment is in\n timeline: segment.timeline,\n // The expected duration of the segment in seconds\n duration: part && part.duration || segment.duration,\n // retain the segment in case the playlist updates while doing an async process\n segment,\n part,\n byteLength: 0,\n transmuxer: this.transmuxer_,\n // type of getMediaInfoForTime that was used to get this segment\n getMediaInfoForTime,\n independent\n };\n const overrideCheck = typeof forceTimestampOffset !== 'undefined' ? forceTimestampOffset : this.isPendingTimestampOffset_;\n segmentInfo.timestampOffset = this.timestampOffsetForSegment_({\n segmentTimeline: segment.timeline,\n currentTimeline: this.currentTimeline_,\n startOfSegment,\n buffered: this.buffered_(),\n calculateTimestampOffsetForEachSegment: this.calculateTimestampOffsetForEachSegment_,\n overrideCheck\n });\n const audioBufferedEnd = lastBufferedEnd(this.sourceUpdater_.audioBuffered());\n if (typeof audioBufferedEnd === 'number') {\n // since the transmuxer is using the actual timing values, but the buffer is\n // adjusted by the timestamp offset, we must adjust the value here\n segmentInfo.audioAppendStart = audioBufferedEnd - this.sourceUpdater_.audioTimestampOffset();\n }\n if (this.sourceUpdater_.videoBuffered().length) {\n segmentInfo.gopsToAlignWith = gopsSafeToAlignWith(this.gopBuffer_,\n // since the transmuxer is using the actual timing values, but the time is\n // adjusted by the timestmap offset, we must adjust the value here\n this.currentTime_() - this.sourceUpdater_.videoTimestampOffset(), this.timeMapping_);\n }\n return segmentInfo;\n } // get the timestampoffset for a segment,\n // added so that vtt segment loader can override and prevent\n // adding timestamp offsets.\n\n timestampOffsetForSegment_(options) {\n return timestampOffsetForSegment(options);\n }\n /**\n * Determines if the network has enough bandwidth to complete the current segment\n * request in a timely manner. If not, the request will be aborted early and bandwidth\n * updated to trigger a playlist switch.\n *\n * @param {Object} stats\n * Object containing stats about the request timing and size\n * @private\n */\n\n earlyAbortWhenNeeded_(stats) {\n if (this.vhs_.tech_.paused() ||\n // Don't abort if the current playlist is on the lowestEnabledRendition\n // TODO: Replace using timeout with a boolean indicating whether this playlist is\n // the lowestEnabledRendition.\n !this.xhrOptions_.timeout ||\n // Don't abort if we have no bandwidth information to estimate segment sizes\n !this.playlist_.attributes.BANDWIDTH) {\n return;\n } // Wait at least 1 second since the first byte of data has been received before\n // using the calculated bandwidth from the progress event to allow the bitrate\n // to stabilize\n\n if (Date.now() - (stats.firstBytesReceivedAt || Date.now()) < 1000) {\n return;\n }\n const currentTime = this.currentTime_();\n const measuredBandwidth = stats.bandwidth;\n const segmentDuration = this.pendingSegment_.duration;\n const requestTimeRemaining = Playlist.estimateSegmentRequestTime(segmentDuration, measuredBandwidth, this.playlist_, stats.bytesReceived); // Subtract 1 from the timeUntilRebuffer so we still consider an early abort\n // if we are only left with less than 1 second when the request completes.\n // A negative timeUntilRebuffering indicates we are already rebuffering\n\n const timeUntilRebuffer$1 = timeUntilRebuffer(this.buffered_(), currentTime, this.vhs_.tech_.playbackRate()) - 1; // Only consider aborting early if the estimated time to finish the download\n // is larger than the estimated time until the player runs out of forward buffer\n\n if (requestTimeRemaining <= timeUntilRebuffer$1) {\n return;\n }\n const switchCandidate = minRebufferMaxBandwidthSelector({\n main: this.vhs_.playlists.main,\n currentTime,\n bandwidth: measuredBandwidth,\n duration: this.duration_(),\n segmentDuration,\n timeUntilRebuffer: timeUntilRebuffer$1,\n currentTimeline: this.currentTimeline_,\n syncController: this.syncController_\n });\n if (!switchCandidate) {\n return;\n }\n const rebufferingImpact = requestTimeRemaining - timeUntilRebuffer$1;\n const timeSavedBySwitching = rebufferingImpact - switchCandidate.rebufferingImpact;\n let minimumTimeSaving = 0.5; // If we are already rebuffering, increase the amount of variance we add to the\n // potential round trip time of the new request so that we are not too aggressive\n // with switching to a playlist that might save us a fraction of a second.\n\n if (timeUntilRebuffer$1 <= TIME_FUDGE_FACTOR) {\n minimumTimeSaving = 1;\n }\n if (!switchCandidate.playlist || switchCandidate.playlist.uri === this.playlist_.uri || timeSavedBySwitching < minimumTimeSaving) {\n return;\n } // set the bandwidth to that of the desired playlist being sure to scale by\n // BANDWIDTH_VARIANCE and add one so the playlist selector does not exclude it\n // don't trigger a bandwidthupdate as the bandwidth is artifial\n\n this.bandwidth = switchCandidate.playlist.attributes.BANDWIDTH * Config.BANDWIDTH_VARIANCE + 1;\n this.trigger('earlyabort');\n }\n handleAbort_(segmentInfo) {\n this.logger_(`Aborting ${segmentInfoString(segmentInfo)}`);\n this.mediaRequestsAborted += 1;\n }\n /**\n * XHR `progress` event handler\n *\n * @param {Event}\n * The XHR `progress` event\n * @param {Object} simpleSegment\n * A simplified segment object copy\n * @private\n */\n\n handleProgress_(event, simpleSegment) {\n this.earlyAbortWhenNeeded_(simpleSegment.stats);\n if (this.checkForAbort_(simpleSegment.requestId)) {\n return;\n }\n this.trigger('progress');\n }\n handleTrackInfo_(simpleSegment, trackInfo) {\n this.earlyAbortWhenNeeded_(simpleSegment.stats);\n if (this.checkForAbort_(simpleSegment.requestId)) {\n return;\n }\n if (this.checkForIllegalMediaSwitch(trackInfo)) {\n return;\n }\n trackInfo = trackInfo || {}; // When we have track info, determine what media types this loader is dealing with.\n // Guard against cases where we're not getting track info at all until we are\n // certain that all streams will provide it.\n\n if (!shallowEqual(this.currentMediaInfo_, trackInfo)) {\n this.appendInitSegment_ = {\n audio: true,\n video: true\n };\n this.startingMediaInfo_ = trackInfo;\n this.currentMediaInfo_ = trackInfo;\n this.logger_('trackinfo update', trackInfo);\n this.trigger('trackinfo');\n } // trackinfo may cause an abort if the trackinfo\n // causes a codec change to an unsupported codec.\n\n if (this.checkForAbort_(simpleSegment.requestId)) {\n return;\n } // set trackinfo on the pending segment so that\n // it can append.\n\n this.pendingSegment_.trackInfo = trackInfo; // check if any calls were waiting on the track info\n\n if (this.hasEnoughInfoToAppend_()) {\n this.processCallQueue_();\n }\n }\n handleTimingInfo_(simpleSegment, mediaType, timeType, time) {\n this.earlyAbortWhenNeeded_(simpleSegment.stats);\n if (this.checkForAbort_(simpleSegment.requestId)) {\n return;\n }\n const segmentInfo = this.pendingSegment_;\n const timingInfoProperty = timingInfoPropertyForMedia(mediaType);\n segmentInfo[timingInfoProperty] = segmentInfo[timingInfoProperty] || {};\n segmentInfo[timingInfoProperty][timeType] = time;\n this.logger_(`timinginfo: ${mediaType} - ${timeType} - ${time}`); // check if any calls were waiting on the timing info\n\n if (this.hasEnoughInfoToAppend_()) {\n this.processCallQueue_();\n }\n }\n handleCaptions_(simpleSegment, captionData) {\n this.earlyAbortWhenNeeded_(simpleSegment.stats);\n if (this.checkForAbort_(simpleSegment.requestId)) {\n return;\n } // This could only happen with fmp4 segments, but\n // should still not happen in general\n\n if (captionData.length === 0) {\n this.logger_('SegmentLoader received no captions from a caption event');\n return;\n }\n const segmentInfo = this.pendingSegment_; // Wait until we have some video data so that caption timing\n // can be adjusted by the timestamp offset\n\n if (!segmentInfo.hasAppendedData_) {\n this.metadataQueue_.caption.push(this.handleCaptions_.bind(this, simpleSegment, captionData));\n return;\n }\n const timestampOffset = this.sourceUpdater_.videoTimestampOffset() === null ? this.sourceUpdater_.audioTimestampOffset() : this.sourceUpdater_.videoTimestampOffset();\n const captionTracks = {}; // get total start/end and captions for each track/stream\n\n captionData.forEach(caption => {\n // caption.stream is actually a track name...\n // set to the existing values in tracks or default values\n captionTracks[caption.stream] = captionTracks[caption.stream] || {\n // Infinity, as any other value will be less than this\n startTime: Infinity,\n captions: [],\n // 0 as an other value will be more than this\n endTime: 0\n };\n const captionTrack = captionTracks[caption.stream];\n captionTrack.startTime = Math.min(captionTrack.startTime, caption.startTime + timestampOffset);\n captionTrack.endTime = Math.max(captionTrack.endTime, caption.endTime + timestampOffset);\n captionTrack.captions.push(caption);\n });\n Object.keys(captionTracks).forEach(trackName => {\n const {\n startTime,\n endTime,\n captions\n } = captionTracks[trackName];\n const inbandTextTracks = this.inbandTextTracks_;\n this.logger_(`adding cues from ${startTime} -> ${endTime} for ${trackName}`);\n createCaptionsTrackIfNotExists(inbandTextTracks, this.vhs_.tech_, trackName); // clear out any cues that start and end at the same time period for the same track.\n // We do this because a rendition change that also changes the timescale for captions\n // will result in captions being re-parsed for certain segments. If we add them again\n // without clearing we will have two of the same captions visible.\n\n removeCuesFromTrack(startTime, endTime, inbandTextTracks[trackName]);\n addCaptionData({\n captionArray: captions,\n inbandTextTracks,\n timestampOffset\n });\n }); // Reset stored captions since we added parsed\n // captions to a text track at this point\n\n if (this.transmuxer_) {\n this.transmuxer_.postMessage({\n action: 'clearParsedMp4Captions'\n });\n }\n }\n handleId3_(simpleSegment, id3Frames, dispatchType) {\n this.earlyAbortWhenNeeded_(simpleSegment.stats);\n if (this.checkForAbort_(simpleSegment.requestId)) {\n return;\n }\n const segmentInfo = this.pendingSegment_; // we need to have appended data in order for the timestamp offset to be set\n\n if (!segmentInfo.hasAppendedData_) {\n this.metadataQueue_.id3.push(this.handleId3_.bind(this, simpleSegment, id3Frames, dispatchType));\n return;\n }\n this.addMetadataToTextTrack(dispatchType, id3Frames, this.duration_());\n }\n processMetadataQueue_() {\n this.metadataQueue_.id3.forEach(fn => fn());\n this.metadataQueue_.caption.forEach(fn => fn());\n this.metadataQueue_.id3 = [];\n this.metadataQueue_.caption = [];\n }\n processCallQueue_() {\n const callQueue = this.callQueue_; // Clear out the queue before the queued functions are run, since some of the\n // functions may check the length of the load queue and default to pushing themselves\n // back onto the queue.\n\n this.callQueue_ = [];\n callQueue.forEach(fun => fun());\n }\n processLoadQueue_() {\n const loadQueue = this.loadQueue_; // Clear out the queue before the queued functions are run, since some of the\n // functions may check the length of the load queue and default to pushing themselves\n // back onto the queue.\n\n this.loadQueue_ = [];\n loadQueue.forEach(fun => fun());\n }\n /**\n * Determines whether the loader has enough info to load the next segment.\n *\n * @return {boolean}\n * Whether or not the loader has enough info to load the next segment\n */\n\n hasEnoughInfoToLoad_() {\n // Since primary timing goes by video, only the audio loader potentially needs to wait\n // to load.\n if (this.loaderType_ !== 'audio') {\n return true;\n }\n const segmentInfo = this.pendingSegment_; // A fill buffer must have already run to establish a pending segment before there's\n // enough info to load.\n\n if (!segmentInfo) {\n return false;\n } // The first segment can and should be loaded immediately so that source buffers are\n // created together (before appending). Source buffer creation uses the presence of\n // audio and video data to determine whether to create audio/video source buffers, and\n // uses processed (transmuxed or parsed) media to determine the types required.\n\n if (!this.getCurrentMediaInfo_()) {\n return true;\n }\n if (\n // Technically, instead of waiting to load a segment on timeline changes, a segment\n // can be requested and downloaded and only wait before it is transmuxed or parsed.\n // But in practice, there are a few reasons why it is better to wait until a loader\n // is ready to append that segment before requesting and downloading:\n //\n // 1. Because audio and main loaders cross discontinuities together, if this loader\n // is waiting for the other to catch up, then instead of requesting another\n // segment and using up more bandwidth, by not yet loading, more bandwidth is\n // allotted to the loader currently behind.\n // 2. media-segment-request doesn't have to have logic to consider whether a segment\n // is ready to be processed or not, isolating the queueing behavior to the loader.\n // 3. The audio loader bases some of its segment properties on timing information\n // provided by the main loader, meaning that, if the logic for waiting on\n // processing was in media-segment-request, then it would also need to know how\n // to re-generate the segment information after the main loader caught up.\n shouldWaitForTimelineChange({\n timelineChangeController: this.timelineChangeController_,\n currentTimeline: this.currentTimeline_,\n segmentTimeline: segmentInfo.timeline,\n loaderType: this.loaderType_,\n audioDisabled: this.audioDisabled_\n })) {\n return false;\n }\n return true;\n }\n getCurrentMediaInfo_(segmentInfo = this.pendingSegment_) {\n return segmentInfo && segmentInfo.trackInfo || this.currentMediaInfo_;\n }\n getMediaInfo_(segmentInfo = this.pendingSegment_) {\n return this.getCurrentMediaInfo_(segmentInfo) || this.startingMediaInfo_;\n }\n getPendingSegmentPlaylist() {\n return this.pendingSegment_ ? this.pendingSegment_.playlist : null;\n }\n hasEnoughInfoToAppend_() {\n if (!this.sourceUpdater_.ready()) {\n return false;\n } // If content needs to be removed or the loader is waiting on an append reattempt,\n // then no additional content should be appended until the prior append is resolved.\n\n if (this.waitingOnRemove_ || this.quotaExceededErrorRetryTimeout_) {\n return false;\n }\n const segmentInfo = this.pendingSegment_;\n const trackInfo = this.getCurrentMediaInfo_(); // no segment to append any data for or\n // we do not have information on this specific\n // segment yet\n\n if (!segmentInfo || !trackInfo) {\n return false;\n }\n const {\n hasAudio,\n hasVideo,\n isMuxed\n } = trackInfo;\n if (hasVideo && !segmentInfo.videoTimingInfo) {\n return false;\n } // muxed content only relies on video timing information for now.\n\n if (hasAudio && !this.audioDisabled_ && !isMuxed && !segmentInfo.audioTimingInfo) {\n return false;\n }\n if (shouldWaitForTimelineChange({\n timelineChangeController: this.timelineChangeController_,\n currentTimeline: this.currentTimeline_,\n segmentTimeline: segmentInfo.timeline,\n loaderType: this.loaderType_,\n audioDisabled: this.audioDisabled_\n })) {\n return false;\n }\n return true;\n }\n handleData_(simpleSegment, result) {\n this.earlyAbortWhenNeeded_(simpleSegment.stats);\n if (this.checkForAbort_(simpleSegment.requestId)) {\n return;\n } // If there's anything in the call queue, then this data came later and should be\n // executed after the calls currently queued.\n\n if (this.callQueue_.length || !this.hasEnoughInfoToAppend_()) {\n this.callQueue_.push(this.handleData_.bind(this, simpleSegment, result));\n return;\n }\n const segmentInfo = this.pendingSegment_; // update the time mapping so we can translate from display time to media time\n\n this.setTimeMapping_(segmentInfo.timeline); // for tracking overall stats\n\n this.updateMediaSecondsLoaded_(segmentInfo.part || segmentInfo.segment); // Note that the state isn't changed from loading to appending. This is because abort\n // logic may change behavior depending on the state, and changing state too early may\n // inflate our estimates of bandwidth. In the future this should be re-examined to\n // note more granular states.\n // don't process and append data if the mediaSource is closed\n\n if (this.mediaSource_.readyState === 'closed') {\n return;\n } // if this request included an initialization segment, save that data\n // to the initSegment cache\n\n if (simpleSegment.map) {\n simpleSegment.map = this.initSegmentForMap(simpleSegment.map, true); // move over init segment properties to media request\n\n segmentInfo.segment.map = simpleSegment.map;\n } // if this request included a segment key, save that data in the cache\n\n if (simpleSegment.key) {\n this.segmentKey(simpleSegment.key, true);\n }\n segmentInfo.isFmp4 = simpleSegment.isFmp4;\n segmentInfo.timingInfo = segmentInfo.timingInfo || {};\n if (segmentInfo.isFmp4) {\n this.trigger('fmp4');\n segmentInfo.timingInfo.start = segmentInfo[timingInfoPropertyForMedia(result.type)].start;\n } else {\n const trackInfo = this.getCurrentMediaInfo_();\n const useVideoTimingInfo = this.loaderType_ === 'main' && trackInfo && trackInfo.hasVideo;\n let firstVideoFrameTimeForData;\n if (useVideoTimingInfo) {\n firstVideoFrameTimeForData = segmentInfo.videoTimingInfo.start;\n } // Segment loader knows more about segment timing than the transmuxer (in certain\n // aspects), so make any changes required for a more accurate start time.\n // Don't set the end time yet, as the segment may not be finished processing.\n\n segmentInfo.timingInfo.start = this.trueSegmentStart_({\n currentStart: segmentInfo.timingInfo.start,\n playlist: segmentInfo.playlist,\n mediaIndex: segmentInfo.mediaIndex,\n currentVideoTimestampOffset: this.sourceUpdater_.videoTimestampOffset(),\n useVideoTimingInfo,\n firstVideoFrameTimeForData,\n videoTimingInfo: segmentInfo.videoTimingInfo,\n audioTimingInfo: segmentInfo.audioTimingInfo\n });\n } // Init segments for audio and video only need to be appended in certain cases. Now\n // that data is about to be appended, we can check the final cases to determine\n // whether we should append an init segment.\n\n this.updateAppendInitSegmentStatus(segmentInfo, result.type); // Timestamp offset should be updated once we get new data and have its timing info,\n // as we use the start of the segment to offset the best guess (playlist provided)\n // timestamp offset.\n\n this.updateSourceBufferTimestampOffset_(segmentInfo); // if this is a sync request we need to determine whether it should\n // be appended or not.\n\n if (segmentInfo.isSyncRequest) {\n // first save/update our timing info for this segment.\n // this is what allows us to choose an accurate segment\n // and the main reason we make a sync request.\n this.updateTimingInfoEnd_(segmentInfo);\n this.syncController_.saveSegmentTimingInfo({\n segmentInfo,\n shouldSaveTimelineMapping: this.loaderType_ === 'main'\n });\n const next = this.chooseNextRequest_(); // If the sync request isn't the segment that would be requested next\n // after taking into account its timing info, do not append it.\n\n if (next.mediaIndex !== segmentInfo.mediaIndex || next.partIndex !== segmentInfo.partIndex) {\n this.logger_('sync segment was incorrect, not appending');\n return;\n } // otherwise append it like any other segment as our guess was correct.\n\n this.logger_('sync segment was correct, appending');\n } // Save some state so that in the future anything waiting on first append (and/or\n // timestamp offset(s)) can process immediately. While the extra state isn't optimal,\n // we need some notion of whether the timestamp offset or other relevant information\n // has had a chance to be set.\n\n segmentInfo.hasAppendedData_ = true; // Now that the timestamp offset should be set, we can append any waiting ID3 tags.\n\n this.processMetadataQueue_();\n this.appendData_(segmentInfo, result);\n }\n updateAppendInitSegmentStatus(segmentInfo, type) {\n // alt audio doesn't manage timestamp offset\n if (this.loaderType_ === 'main' && typeof segmentInfo.timestampOffset === 'number' &&\n // in the case that we're handling partial data, we don't want to append an init\n // segment for each chunk\n !segmentInfo.changedTimestampOffset) {\n // if the timestamp offset changed, the timeline may have changed, so we have to re-\n // append init segments\n this.appendInitSegment_ = {\n audio: true,\n video: true\n };\n }\n if (this.playlistOfLastInitSegment_[type] !== segmentInfo.playlist) {\n // make sure we append init segment on playlist changes, in case the media config\n // changed\n this.appendInitSegment_[type] = true;\n }\n }\n getInitSegmentAndUpdateState_({\n type,\n initSegment,\n map,\n playlist\n }) {\n // \"The EXT-X-MAP tag specifies how to obtain the Media Initialization Section\n // (Section 3) required to parse the applicable Media Segments. It applies to every\n // Media Segment that appears after it in the Playlist until the next EXT-X-MAP tag\n // or until the end of the playlist.\"\n // https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.2.5\n if (map) {\n const id = initSegmentId(map);\n if (this.activeInitSegmentId_ === id) {\n // don't need to re-append the init segment if the ID matches\n return null;\n } // a map-specified init segment takes priority over any transmuxed (or otherwise\n // obtained) init segment\n //\n // this also caches the init segment for later use\n\n initSegment = this.initSegmentForMap(map, true).bytes;\n this.activeInitSegmentId_ = id;\n } // We used to always prepend init segments for video, however, that shouldn't be\n // necessary. Instead, we should only append on changes, similar to what we've always\n // done for audio. This is more important (though may not be that important) for\n // frame-by-frame appending for LHLS, simply because of the increased quantity of\n // appends.\n\n if (initSegment && this.appendInitSegment_[type]) {\n // Make sure we track the playlist that we last used for the init segment, so that\n // we can re-append the init segment in the event that we get data from a new\n // playlist. Discontinuities and track changes are handled in other sections.\n this.playlistOfLastInitSegment_[type] = playlist; // Disable future init segment appends for this type. Until a change is necessary.\n\n this.appendInitSegment_[type] = false; // we need to clear out the fmp4 active init segment id, since\n // we are appending the muxer init segment\n\n this.activeInitSegmentId_ = null;\n return initSegment;\n }\n return null;\n }\n handleQuotaExceededError_({\n segmentInfo,\n type,\n bytes\n }, error) {\n const audioBuffered = this.sourceUpdater_.audioBuffered();\n const videoBuffered = this.sourceUpdater_.videoBuffered(); // For now we're ignoring any notion of gaps in the buffer, but they, in theory,\n // should be cleared out during the buffer removals. However, log in case it helps\n // debug.\n\n if (audioBuffered.length > 1) {\n this.logger_('On QUOTA_EXCEEDED_ERR, found gaps in the audio buffer: ' + timeRangesToArray(audioBuffered).join(', '));\n }\n if (videoBuffered.length > 1) {\n this.logger_('On QUOTA_EXCEEDED_ERR, found gaps in the video buffer: ' + timeRangesToArray(videoBuffered).join(', '));\n }\n const audioBufferStart = audioBuffered.length ? audioBuffered.start(0) : 0;\n const audioBufferEnd = audioBuffered.length ? audioBuffered.end(audioBuffered.length - 1) : 0;\n const videoBufferStart = videoBuffered.length ? videoBuffered.start(0) : 0;\n const videoBufferEnd = videoBuffered.length ? videoBuffered.end(videoBuffered.length - 1) : 0;\n if (audioBufferEnd - audioBufferStart <= MIN_BACK_BUFFER && videoBufferEnd - videoBufferStart <= MIN_BACK_BUFFER) {\n // Can't remove enough buffer to make room for new segment (or the browser doesn't\n // allow for appends of segments this size). In the future, it may be possible to\n // split up the segment and append in pieces, but for now, error out this playlist\n // in an attempt to switch to a more manageable rendition.\n this.logger_('On QUOTA_EXCEEDED_ERR, single segment too large to append to ' + 'buffer, triggering an error. ' + `Appended byte length: ${bytes.byteLength}, ` + `audio buffer: ${timeRangesToArray(audioBuffered).join(', ')}, ` + `video buffer: ${timeRangesToArray(videoBuffered).join(', ')}, `);\n this.error({\n message: 'Quota exceeded error with append of a single segment of content',\n excludeUntil: Infinity\n });\n this.trigger('error');\n return;\n } // To try to resolve the quota exceeded error, clear back buffer and retry. This means\n // that the segment-loader should block on future events until this one is handled, so\n // that it doesn't keep moving onto further segments. Adding the call to the call\n // queue will prevent further appends until waitingOnRemove_ and\n // quotaExceededErrorRetryTimeout_ are cleared.\n //\n // Note that this will only block the current loader. In the case of demuxed content,\n // the other load may keep filling as fast as possible. In practice, this should be\n // OK, as it is a rare case when either audio has a high enough bitrate to fill up a\n // source buffer, or video fills without enough room for audio to append (and without\n // the availability of clearing out seconds of back buffer to make room for audio).\n // But it might still be good to handle this case in the future as a TODO.\n\n this.waitingOnRemove_ = true;\n this.callQueue_.push(this.appendToSourceBuffer_.bind(this, {\n segmentInfo,\n type,\n bytes\n }));\n const currentTime = this.currentTime_(); // Try to remove as much audio and video as possible to make room for new content\n // before retrying.\n\n const timeToRemoveUntil = currentTime - MIN_BACK_BUFFER;\n this.logger_(`On QUOTA_EXCEEDED_ERR, removing audio/video from 0 to ${timeToRemoveUntil}`);\n this.remove(0, timeToRemoveUntil, () => {\n this.logger_(`On QUOTA_EXCEEDED_ERR, retrying append in ${MIN_BACK_BUFFER}s`);\n this.waitingOnRemove_ = false; // wait the length of time alotted in the back buffer to prevent wasted\n // attempts (since we can't clear less than the minimum)\n\n this.quotaExceededErrorRetryTimeout_ = window$1.setTimeout(() => {\n this.logger_('On QUOTA_EXCEEDED_ERR, re-processing call queue');\n this.quotaExceededErrorRetryTimeout_ = null;\n this.processCallQueue_();\n }, MIN_BACK_BUFFER * 1000);\n }, true);\n }\n handleAppendError_({\n segmentInfo,\n type,\n bytes\n }, error) {\n // if there's no error, nothing to do\n if (!error) {\n return;\n }\n if (error.code === QUOTA_EXCEEDED_ERR) {\n this.handleQuotaExceededError_({\n segmentInfo,\n type,\n bytes\n }); // A quota exceeded error should be recoverable with a future re-append, so no need\n // to trigger an append error.\n\n return;\n }\n this.logger_('Received non QUOTA_EXCEEDED_ERR on append', error);\n this.error(`${type} append of ${bytes.length}b failed for segment ` + `#${segmentInfo.mediaIndex} in playlist ${segmentInfo.playlist.id}`); // If an append errors, we often can't recover.\n // (see https://w3c.github.io/media-source/#sourcebuffer-append-error).\n //\n // Trigger a special error so that it can be handled separately from normal,\n // recoverable errors.\n\n this.trigger('appenderror');\n }\n appendToSourceBuffer_({\n segmentInfo,\n type,\n initSegment,\n data,\n bytes\n }) {\n // If this is a re-append, bytes were already created and don't need to be recreated\n if (!bytes) {\n const segments = [data];\n let byteLength = data.byteLength;\n if (initSegment) {\n // if the media initialization segment is changing, append it before the content\n // segment\n segments.unshift(initSegment);\n byteLength += initSegment.byteLength;\n } // Technically we should be OK appending the init segment separately, however, we\n // haven't yet tested that, and prepending is how we have always done things.\n\n bytes = concatSegments({\n bytes: byteLength,\n segments\n });\n }\n this.sourceUpdater_.appendBuffer({\n segmentInfo,\n type,\n bytes\n }, this.handleAppendError_.bind(this, {\n segmentInfo,\n type,\n bytes\n }));\n }\n handleSegmentTimingInfo_(type, requestId, segmentTimingInfo) {\n if (!this.pendingSegment_ || requestId !== this.pendingSegment_.requestId) {\n return;\n }\n const segment = this.pendingSegment_.segment;\n const timingInfoProperty = `${type}TimingInfo`;\n if (!segment[timingInfoProperty]) {\n segment[timingInfoProperty] = {};\n }\n segment[timingInfoProperty].transmuxerPrependedSeconds = segmentTimingInfo.prependedContentDuration || 0;\n segment[timingInfoProperty].transmuxedPresentationStart = segmentTimingInfo.start.presentation;\n segment[timingInfoProperty].transmuxedDecodeStart = segmentTimingInfo.start.decode;\n segment[timingInfoProperty].transmuxedPresentationEnd = segmentTimingInfo.end.presentation;\n segment[timingInfoProperty].transmuxedDecodeEnd = segmentTimingInfo.end.decode; // mainly used as a reference for debugging\n\n segment[timingInfoProperty].baseMediaDecodeTime = segmentTimingInfo.baseMediaDecodeTime;\n }\n appendData_(segmentInfo, result) {\n const {\n type,\n data\n } = result;\n if (!data || !data.byteLength) {\n return;\n }\n if (type === 'audio' && this.audioDisabled_) {\n return;\n }\n const initSegment = this.getInitSegmentAndUpdateState_({\n type,\n initSegment: result.initSegment,\n playlist: segmentInfo.playlist,\n map: segmentInfo.isFmp4 ? segmentInfo.segment.map : null\n });\n this.appendToSourceBuffer_({\n segmentInfo,\n type,\n initSegment,\n data\n });\n }\n /**\n * load a specific segment from a request into the buffer\n *\n * @private\n */\n\n loadSegment_(segmentInfo) {\n this.state = 'WAITING';\n this.pendingSegment_ = segmentInfo;\n this.trimBackBuffer_(segmentInfo);\n if (typeof segmentInfo.timestampOffset === 'number') {\n if (this.transmuxer_) {\n this.transmuxer_.postMessage({\n action: 'clearAllMp4Captions'\n });\n }\n }\n if (!this.hasEnoughInfoToLoad_()) {\n this.loadQueue_.push(() => {\n // regenerate the audioAppendStart, timestampOffset, etc as they\n // may have changed since this function was added to the queue.\n const options = _extends({}, segmentInfo, {\n forceTimestampOffset: true\n });\n _extends(segmentInfo, this.generateSegmentInfo_(options));\n this.isPendingTimestampOffset_ = false;\n this.updateTransmuxerAndRequestSegment_(segmentInfo);\n });\n return;\n }\n this.updateTransmuxerAndRequestSegment_(segmentInfo);\n }\n updateTransmuxerAndRequestSegment_(segmentInfo) {\n // We'll update the source buffer's timestamp offset once we have transmuxed data, but\n // the transmuxer still needs to be updated before then.\n //\n // Even though keepOriginalTimestamps is set to true for the transmuxer, timestamp\n // offset must be passed to the transmuxer for stream correcting adjustments.\n if (this.shouldUpdateTransmuxerTimestampOffset_(segmentInfo.timestampOffset)) {\n this.gopBuffer_.length = 0; // gopsToAlignWith was set before the GOP buffer was cleared\n\n segmentInfo.gopsToAlignWith = [];\n this.timeMapping_ = 0; // reset values in the transmuxer since a discontinuity should start fresh\n\n this.transmuxer_.postMessage({\n action: 'reset'\n });\n this.transmuxer_.postMessage({\n action: 'setTimestampOffset',\n timestampOffset: segmentInfo.timestampOffset\n });\n }\n const simpleSegment = this.createSimplifiedSegmentObj_(segmentInfo);\n const isEndOfStream = this.isEndOfStream_(segmentInfo.mediaIndex, segmentInfo.playlist, segmentInfo.partIndex);\n const isWalkingForward = this.mediaIndex !== null;\n const isDiscontinuity = segmentInfo.timeline !== this.currentTimeline_ &&\n // currentTimeline starts at -1, so we shouldn't end the timeline switching to 0,\n // the first timeline\n segmentInfo.timeline > 0;\n const isEndOfTimeline = isEndOfStream || isWalkingForward && isDiscontinuity;\n this.logger_(`Requesting ${segmentInfoString(segmentInfo)}`); // If there's an init segment associated with this segment, but it is not cached (identified by a lack of bytes),\n // then this init segment has never been seen before and should be appended.\n //\n // At this point the content type (audio/video or both) is not yet known, but it should be safe to set\n // both to true and leave the decision of whether to append the init segment to append time.\n\n if (simpleSegment.map && !simpleSegment.map.bytes) {\n this.logger_('going to request init segment.');\n this.appendInitSegment_ = {\n video: true,\n audio: true\n };\n }\n segmentInfo.abortRequests = mediaSegmentRequest({\n xhr: this.vhs_.xhr,\n xhrOptions: this.xhrOptions_,\n decryptionWorker: this.decrypter_,\n segment: simpleSegment,\n abortFn: this.handleAbort_.bind(this, segmentInfo),\n progressFn: this.handleProgress_.bind(this),\n trackInfoFn: this.handleTrackInfo_.bind(this),\n timingInfoFn: this.handleTimingInfo_.bind(this),\n videoSegmentTimingInfoFn: this.handleSegmentTimingInfo_.bind(this, 'video', segmentInfo.requestId),\n audioSegmentTimingInfoFn: this.handleSegmentTimingInfo_.bind(this, 'audio', segmentInfo.requestId),\n captionsFn: this.handleCaptions_.bind(this),\n isEndOfTimeline,\n endedTimelineFn: () => {\n this.logger_('received endedtimeline callback');\n },\n id3Fn: this.handleId3_.bind(this),\n dataFn: this.handleData_.bind(this),\n doneFn: this.segmentRequestFinished_.bind(this),\n onTransmuxerLog: ({\n message,\n level,\n stream\n }) => {\n this.logger_(`${segmentInfoString(segmentInfo)} logged from transmuxer stream ${stream} as a ${level}: ${message}`);\n }\n });\n }\n /**\n * trim the back buffer so that we don't have too much data\n * in the source buffer\n *\n * @private\n *\n * @param {Object} segmentInfo - the current segment\n */\n\n trimBackBuffer_(segmentInfo) {\n const removeToTime = safeBackBufferTrimTime(this.seekable_(), this.currentTime_(), this.playlist_.targetDuration || 10); // Chrome has a hard limit of 150MB of\n // buffer and a very conservative \"garbage collector\"\n // We manually clear out the old buffer to ensure\n // we don't trigger the QuotaExceeded error\n // on the source buffer during subsequent appends\n\n if (removeToTime > 0) {\n this.remove(0, removeToTime);\n }\n }\n /**\n * created a simplified copy of the segment object with just the\n * information necessary to perform the XHR and decryption\n *\n * @private\n *\n * @param {Object} segmentInfo - the current segment\n * @return {Object} a simplified segment object copy\n */\n\n createSimplifiedSegmentObj_(segmentInfo) {\n const segment = segmentInfo.segment;\n const part = segmentInfo.part;\n const simpleSegment = {\n resolvedUri: part ? part.resolvedUri : segment.resolvedUri,\n byterange: part ? part.byterange : segment.byterange,\n requestId: segmentInfo.requestId,\n transmuxer: segmentInfo.transmuxer,\n audioAppendStart: segmentInfo.audioAppendStart,\n gopsToAlignWith: segmentInfo.gopsToAlignWith,\n part: segmentInfo.part\n };\n const previousSegment = segmentInfo.playlist.segments[segmentInfo.mediaIndex - 1];\n if (previousSegment && previousSegment.timeline === segment.timeline) {\n // The baseStartTime of a segment is used to handle rollover when probing the TS\n // segment to retrieve timing information. Since the probe only looks at the media's\n // times (e.g., PTS and DTS values of the segment), and doesn't consider the\n // player's time (e.g., player.currentTime()), baseStartTime should reflect the\n // media time as well. transmuxedDecodeEnd represents the end time of a segment, in\n // seconds of media time, so should be used here. The previous segment is used since\n // the end of the previous segment should represent the beginning of the current\n // segment, so long as they are on the same timeline.\n if (previousSegment.videoTimingInfo) {\n simpleSegment.baseStartTime = previousSegment.videoTimingInfo.transmuxedDecodeEnd;\n } else if (previousSegment.audioTimingInfo) {\n simpleSegment.baseStartTime = previousSegment.audioTimingInfo.transmuxedDecodeEnd;\n }\n }\n if (segment.key) {\n // if the media sequence is greater than 2^32, the IV will be incorrect\n // assuming 10s segments, that would be about 1300 years\n const iv = segment.key.iv || new Uint32Array([0, 0, 0, segmentInfo.mediaIndex + segmentInfo.playlist.mediaSequence]);\n simpleSegment.key = this.segmentKey(segment.key);\n simpleSegment.key.iv = iv;\n }\n if (segment.map) {\n simpleSegment.map = this.initSegmentForMap(segment.map);\n }\n return simpleSegment;\n }\n saveTransferStats_(stats) {\n // every request counts as a media request even if it has been aborted\n // or canceled due to a timeout\n this.mediaRequests += 1;\n if (stats) {\n this.mediaBytesTransferred += stats.bytesReceived;\n this.mediaTransferDuration += stats.roundTripTime;\n }\n }\n saveBandwidthRelatedStats_(duration, stats) {\n // byteLength will be used for throughput, and should be based on bytes receieved,\n // which we only know at the end of the request and should reflect total bytes\n // downloaded rather than just bytes processed from components of the segment\n this.pendingSegment_.byteLength = stats.bytesReceived;\n if (duration < MIN_SEGMENT_DURATION_TO_SAVE_STATS) {\n this.logger_(`Ignoring segment's bandwidth because its duration of ${duration}` + ` is less than the min to record ${MIN_SEGMENT_DURATION_TO_SAVE_STATS}`);\n return;\n }\n this.bandwidth = stats.bandwidth;\n this.roundTrip = stats.roundTripTime;\n }\n handleTimeout_() {\n // although the VTT segment loader bandwidth isn't really used, it's good to\n // maintain functinality between segment loaders\n this.mediaRequestsTimedout += 1;\n this.bandwidth = 1;\n this.roundTrip = NaN;\n this.trigger('bandwidthupdate');\n this.trigger('timeout');\n }\n /**\n * Handle the callback from the segmentRequest function and set the\n * associated SegmentLoader state and errors if necessary\n *\n * @private\n */\n\n segmentRequestFinished_(error, simpleSegment, result) {\n // TODO handle special cases, e.g., muxed audio/video but only audio in the segment\n // check the call queue directly since this function doesn't need to deal with any\n // data, and can continue even if the source buffers are not set up and we didn't get\n // any data from the segment\n if (this.callQueue_.length) {\n this.callQueue_.push(this.segmentRequestFinished_.bind(this, error, simpleSegment, result));\n return;\n }\n this.saveTransferStats_(simpleSegment.stats); // The request was aborted and the SegmentLoader has already been reset\n\n if (!this.pendingSegment_) {\n return;\n } // the request was aborted and the SegmentLoader has already started\n // another request. this can happen when the timeout for an aborted\n // request triggers due to a limitation in the XHR library\n // do not count this as any sort of request or we risk double-counting\n\n if (simpleSegment.requestId !== this.pendingSegment_.requestId) {\n return;\n } // an error occurred from the active pendingSegment_ so reset everything\n\n if (error) {\n this.pendingSegment_ = null;\n this.state = 'READY'; // aborts are not a true error condition and nothing corrective needs to be done\n\n if (error.code === REQUEST_ERRORS.ABORTED) {\n return;\n }\n this.pause(); // the error is really just that at least one of the requests timed-out\n // set the bandwidth to a very low value and trigger an ABR switch to\n // take emergency action\n\n if (error.code === REQUEST_ERRORS.TIMEOUT) {\n this.handleTimeout_();\n return;\n } // if control-flow has arrived here, then the error is real\n // emit an error event to exclude the current playlist\n\n this.mediaRequestsErrored += 1;\n this.error(error);\n this.trigger('error');\n return;\n }\n const segmentInfo = this.pendingSegment_; // the response was a success so set any bandwidth stats the request\n // generated for ABR purposes\n\n this.saveBandwidthRelatedStats_(segmentInfo.duration, simpleSegment.stats);\n segmentInfo.endOfAllRequests = simpleSegment.endOfAllRequests;\n if (result.gopInfo) {\n this.gopBuffer_ = updateGopBuffer(this.gopBuffer_, result.gopInfo, this.safeAppend_);\n } // Although we may have already started appending on progress, we shouldn't switch the\n // state away from loading until we are officially done loading the segment data.\n\n this.state = 'APPENDING'; // used for testing\n\n this.trigger('appending');\n this.waitForAppendsToComplete_(segmentInfo);\n }\n setTimeMapping_(timeline) {\n const timelineMapping = this.syncController_.mappingForTimeline(timeline);\n if (timelineMapping !== null) {\n this.timeMapping_ = timelineMapping;\n }\n }\n updateMediaSecondsLoaded_(segment) {\n if (typeof segment.start === 'number' && typeof segment.end === 'number') {\n this.mediaSecondsLoaded += segment.end - segment.start;\n } else {\n this.mediaSecondsLoaded += segment.duration;\n }\n }\n shouldUpdateTransmuxerTimestampOffset_(timestampOffset) {\n if (timestampOffset === null) {\n return false;\n } // note that we're potentially using the same timestamp offset for both video and\n // audio\n\n if (this.loaderType_ === 'main' && timestampOffset !== this.sourceUpdater_.videoTimestampOffset()) {\n return true;\n }\n if (!this.audioDisabled_ && timestampOffset !== this.sourceUpdater_.audioTimestampOffset()) {\n return true;\n }\n return false;\n }\n trueSegmentStart_({\n currentStart,\n playlist,\n mediaIndex,\n firstVideoFrameTimeForData,\n currentVideoTimestampOffset,\n useVideoTimingInfo,\n videoTimingInfo,\n audioTimingInfo\n }) {\n if (typeof currentStart !== 'undefined') {\n // if start was set once, keep using it\n return currentStart;\n }\n if (!useVideoTimingInfo) {\n return audioTimingInfo.start;\n }\n const previousSegment = playlist.segments[mediaIndex - 1]; // The start of a segment should be the start of the first full frame contained\n // within that segment. Since the transmuxer maintains a cache of incomplete data\n // from and/or the last frame seen, the start time may reflect a frame that starts\n // in the previous segment. Check for that case and ensure the start time is\n // accurate for the segment.\n\n if (mediaIndex === 0 || !previousSegment || typeof previousSegment.start === 'undefined' || previousSegment.end !== firstVideoFrameTimeForData + currentVideoTimestampOffset) {\n return firstVideoFrameTimeForData;\n }\n return videoTimingInfo.start;\n }\n waitForAppendsToComplete_(segmentInfo) {\n const trackInfo = this.getCurrentMediaInfo_(segmentInfo);\n if (!trackInfo) {\n this.error({\n message: 'No starting media returned, likely due to an unsupported media format.',\n playlistExclusionDuration: Infinity\n });\n this.trigger('error');\n return;\n } // Although transmuxing is done, appends may not yet be finished. Throw a marker\n // on each queue this loader is responsible for to ensure that the appends are\n // complete.\n\n const {\n hasAudio,\n hasVideo,\n isMuxed\n } = trackInfo;\n const waitForVideo = this.loaderType_ === 'main' && hasVideo;\n const waitForAudio = !this.audioDisabled_ && hasAudio && !isMuxed;\n segmentInfo.waitingOnAppends = 0; // segments with no data\n\n if (!segmentInfo.hasAppendedData_) {\n if (!segmentInfo.timingInfo && typeof segmentInfo.timestampOffset === 'number') {\n // When there's no audio or video data in the segment, there's no audio or video\n // timing information.\n //\n // If there's no audio or video timing information, then the timestamp offset\n // can't be adjusted to the appropriate value for the transmuxer and source\n // buffers.\n //\n // Therefore, the next segment should be used to set the timestamp offset.\n this.isPendingTimestampOffset_ = true;\n } // override settings for metadata only segments\n\n segmentInfo.timingInfo = {\n start: 0\n };\n segmentInfo.waitingOnAppends++;\n if (!this.isPendingTimestampOffset_) {\n // update the timestampoffset\n this.updateSourceBufferTimestampOffset_(segmentInfo); // make sure the metadata queue is processed even though we have\n // no video/audio data.\n\n this.processMetadataQueue_();\n } // append is \"done\" instantly with no data.\n\n this.checkAppendsDone_(segmentInfo);\n return;\n } // Since source updater could call back synchronously, do the increments first.\n\n if (waitForVideo) {\n segmentInfo.waitingOnAppends++;\n }\n if (waitForAudio) {\n segmentInfo.waitingOnAppends++;\n }\n if (waitForVideo) {\n this.sourceUpdater_.videoQueueCallback(this.checkAppendsDone_.bind(this, segmentInfo));\n }\n if (waitForAudio) {\n this.sourceUpdater_.audioQueueCallback(this.checkAppendsDone_.bind(this, segmentInfo));\n }\n }\n checkAppendsDone_(segmentInfo) {\n if (this.checkForAbort_(segmentInfo.requestId)) {\n return;\n }\n segmentInfo.waitingOnAppends--;\n if (segmentInfo.waitingOnAppends === 0) {\n this.handleAppendsDone_();\n }\n }\n checkForIllegalMediaSwitch(trackInfo) {\n const illegalMediaSwitchError = illegalMediaSwitch(this.loaderType_, this.getCurrentMediaInfo_(), trackInfo);\n if (illegalMediaSwitchError) {\n this.error({\n message: illegalMediaSwitchError,\n playlistExclusionDuration: Infinity\n });\n this.trigger('error');\n return true;\n }\n return false;\n }\n updateSourceBufferTimestampOffset_(segmentInfo) {\n if (segmentInfo.timestampOffset === null ||\n // we don't yet have the start for whatever media type (video or audio) has\n // priority, timing-wise, so we must wait\n typeof segmentInfo.timingInfo.start !== 'number' ||\n // already updated the timestamp offset for this segment\n segmentInfo.changedTimestampOffset ||\n // the alt audio loader should not be responsible for setting the timestamp offset\n this.loaderType_ !== 'main') {\n return;\n }\n let didChange = false; // Primary timing goes by video, and audio is trimmed in the transmuxer, meaning that\n // the timing info here comes from video. In the event that the audio is longer than\n // the video, this will trim the start of the audio.\n // This also trims any offset from 0 at the beginning of the media\n\n segmentInfo.timestampOffset -= this.getSegmentStartTimeForTimestampOffsetCalculation_({\n videoTimingInfo: segmentInfo.segment.videoTimingInfo,\n audioTimingInfo: segmentInfo.segment.audioTimingInfo,\n timingInfo: segmentInfo.timingInfo\n }); // In the event that there are part segment downloads, each will try to update the\n // timestamp offset. Retaining this bit of state prevents us from updating in the\n // future (within the same segment), however, there may be a better way to handle it.\n\n segmentInfo.changedTimestampOffset = true;\n if (segmentInfo.timestampOffset !== this.sourceUpdater_.videoTimestampOffset()) {\n this.sourceUpdater_.videoTimestampOffset(segmentInfo.timestampOffset);\n didChange = true;\n }\n if (segmentInfo.timestampOffset !== this.sourceUpdater_.audioTimestampOffset()) {\n this.sourceUpdater_.audioTimestampOffset(segmentInfo.timestampOffset);\n didChange = true;\n }\n if (didChange) {\n this.trigger('timestampoffset');\n }\n }\n getSegmentStartTimeForTimestampOffsetCalculation_({\n videoTimingInfo,\n audioTimingInfo,\n timingInfo\n }) {\n if (!this.useDtsForTimestampOffset_) {\n return timingInfo.start;\n }\n if (videoTimingInfo && typeof videoTimingInfo.transmuxedDecodeStart === 'number') {\n return videoTimingInfo.transmuxedDecodeStart;\n } // handle audio only\n\n if (audioTimingInfo && typeof audioTimingInfo.transmuxedDecodeStart === 'number') {\n return audioTimingInfo.transmuxedDecodeStart;\n } // handle content not transmuxed (e.g., MP4)\n\n return timingInfo.start;\n }\n updateTimingInfoEnd_(segmentInfo) {\n segmentInfo.timingInfo = segmentInfo.timingInfo || {};\n const trackInfo = this.getMediaInfo_();\n const useVideoTimingInfo = this.loaderType_ === 'main' && trackInfo && trackInfo.hasVideo;\n const prioritizedTimingInfo = useVideoTimingInfo && segmentInfo.videoTimingInfo ? segmentInfo.videoTimingInfo : segmentInfo.audioTimingInfo;\n if (!prioritizedTimingInfo) {\n return;\n }\n segmentInfo.timingInfo.end = typeof prioritizedTimingInfo.end === 'number' ?\n // End time may not exist in a case where we aren't parsing the full segment (one\n // current example is the case of fmp4), so use the rough duration to calculate an\n // end time.\n prioritizedTimingInfo.end : prioritizedTimingInfo.start + segmentInfo.duration;\n }\n /**\n * callback to run when appendBuffer is finished. detects if we are\n * in a good state to do things with the data we got, or if we need\n * to wait for more\n *\n * @private\n */\n\n handleAppendsDone_() {\n // appendsdone can cause an abort\n if (this.pendingSegment_) {\n this.trigger('appendsdone');\n }\n if (!this.pendingSegment_) {\n this.state = 'READY'; // TODO should this move into this.checkForAbort to speed up requests post abort in\n // all appending cases?\n\n if (!this.paused()) {\n this.monitorBuffer_();\n }\n return;\n }\n const segmentInfo = this.pendingSegment_; // Now that the end of the segment has been reached, we can set the end time. It's\n // best to wait until all appends are done so we're sure that the primary media is\n // finished (and we have its end time).\n\n this.updateTimingInfoEnd_(segmentInfo);\n if (this.shouldSaveSegmentTimingInfo_) {\n // Timeline mappings should only be saved for the main loader. This is for multiple\n // reasons:\n //\n // 1) Only one mapping is saved per timeline, meaning that if both the audio loader\n // and the main loader try to save the timeline mapping, whichever comes later\n // will overwrite the first. In theory this is OK, as the mappings should be the\n // same, however, it breaks for (2)\n // 2) In the event of a live stream, the initial live point will make for a somewhat\n // arbitrary mapping. If audio and video streams are not perfectly in-sync, then\n // the mapping will be off for one of the streams, dependent on which one was\n // first saved (see (1)).\n // 3) Primary timing goes by video in VHS, so the mapping should be video.\n //\n // Since the audio loader will wait for the main loader to load the first segment,\n // the main loader will save the first timeline mapping, and ensure that there won't\n // be a case where audio loads two segments without saving a mapping (thus leading\n // to missing segment timing info).\n this.syncController_.saveSegmentTimingInfo({\n segmentInfo,\n shouldSaveTimelineMapping: this.loaderType_ === 'main'\n });\n }\n const segmentDurationMessage = getTroublesomeSegmentDurationMessage(segmentInfo, this.sourceType_);\n if (segmentDurationMessage) {\n if (segmentDurationMessage.severity === 'warn') {\n videojs.log.warn(segmentDurationMessage.message);\n } else {\n this.logger_(segmentDurationMessage.message);\n }\n }\n this.recordThroughput_(segmentInfo);\n this.pendingSegment_ = null;\n this.state = 'READY';\n if (segmentInfo.isSyncRequest) {\n this.trigger('syncinfoupdate'); // if the sync request was not appended\n // then it was not the correct segment.\n // throw it away and use the data it gave us\n // to get the correct one.\n\n if (!segmentInfo.hasAppendedData_) {\n this.logger_(`Throwing away un-appended sync request ${segmentInfoString(segmentInfo)}`);\n return;\n }\n }\n this.logger_(`Appended ${segmentInfoString(segmentInfo)}`);\n this.addSegmentMetadataCue_(segmentInfo);\n if (this.currentTime_() >= this.replaceSegmentsUntil_) {\n this.replaceSegmentsUntil_ = -1;\n this.fetchAtBuffer_ = true;\n }\n if (this.currentTimeline_ !== segmentInfo.timeline) {\n this.timelineChangeController_.lastTimelineChange({\n type: this.loaderType_,\n from: this.currentTimeline_,\n to: segmentInfo.timeline\n }); // If audio is not disabled, the main segment loader is responsible for updating\n // the audio timeline as well. If the content is video only, this won't have any\n // impact.\n\n if (this.loaderType_ === 'main' && !this.audioDisabled_) {\n this.timelineChangeController_.lastTimelineChange({\n type: 'audio',\n from: this.currentTimeline_,\n to: segmentInfo.timeline\n });\n }\n }\n this.currentTimeline_ = segmentInfo.timeline; // We must update the syncinfo to recalculate the seekable range before\n // the following conditional otherwise it may consider this a bad \"guess\"\n // and attempt to resync when the post-update seekable window and live\n // point would mean that this was the perfect segment to fetch\n\n this.trigger('syncinfoupdate');\n const segment = segmentInfo.segment;\n const part = segmentInfo.part;\n const badSegmentGuess = segment.end && this.currentTime_() - segment.end > segmentInfo.playlist.targetDuration * 3;\n const badPartGuess = part && part.end && this.currentTime_() - part.end > segmentInfo.playlist.partTargetDuration * 3; // If we previously appended a segment/part that ends more than 3 part/targetDurations before\n // the currentTime_ that means that our conservative guess was too conservative.\n // In that case, reset the loader state so that we try to use any information gained\n // from the previous request to create a new, more accurate, sync-point.\n\n if (badSegmentGuess || badPartGuess) {\n this.logger_(`bad ${badSegmentGuess ? 'segment' : 'part'} ${segmentInfoString(segmentInfo)}`);\n this.resetEverything();\n return;\n }\n const isWalkingForward = this.mediaIndex !== null; // Don't do a rendition switch unless we have enough time to get a sync segment\n // and conservatively guess\n\n if (isWalkingForward) {\n this.trigger('bandwidthupdate');\n }\n this.trigger('progress');\n this.mediaIndex = segmentInfo.mediaIndex;\n this.partIndex = segmentInfo.partIndex; // any time an update finishes and the last segment is in the\n // buffer, end the stream. this ensures the \"ended\" event will\n // fire if playback reaches that point.\n\n if (this.isEndOfStream_(segmentInfo.mediaIndex, segmentInfo.playlist, segmentInfo.partIndex)) {\n this.endOfStream();\n } // used for testing\n\n this.trigger('appended');\n if (segmentInfo.hasAppendedData_) {\n this.mediaAppends++;\n }\n if (!this.paused()) {\n this.monitorBuffer_();\n }\n }\n /**\n * Records the current throughput of the decrypt, transmux, and append\n * portion of the semgment pipeline. `throughput.rate` is a the cumulative\n * moving average of the throughput. `throughput.count` is the number of\n * data points in the average.\n *\n * @private\n * @param {Object} segmentInfo the object returned by loadSegment\n */\n\n recordThroughput_(segmentInfo) {\n if (segmentInfo.duration < MIN_SEGMENT_DURATION_TO_SAVE_STATS) {\n this.logger_(`Ignoring segment's throughput because its duration of ${segmentInfo.duration}` + ` is less than the min to record ${MIN_SEGMENT_DURATION_TO_SAVE_STATS}`);\n return;\n }\n const rate = this.throughput.rate; // Add one to the time to ensure that we don't accidentally attempt to divide\n // by zero in the case where the throughput is ridiculously high\n\n const segmentProcessingTime = Date.now() - segmentInfo.endOfAllRequests + 1; // Multiply by 8000 to convert from bytes/millisecond to bits/second\n\n const segmentProcessingThroughput = Math.floor(segmentInfo.byteLength / segmentProcessingTime * 8 * 1000); // This is just a cumulative moving average calculation:\n // newAvg = oldAvg + (sample - oldAvg) / (sampleCount + 1)\n\n this.throughput.rate += (segmentProcessingThroughput - rate) / ++this.throughput.count;\n }\n /**\n * Adds a cue to the segment-metadata track with some metadata information about the\n * segment\n *\n * @private\n * @param {Object} segmentInfo\n * the object returned by loadSegment\n * @method addSegmentMetadataCue_\n */\n\n addSegmentMetadataCue_(segmentInfo) {\n if (!this.segmentMetadataTrack_) {\n return;\n }\n const segment = segmentInfo.segment;\n const start = segment.start;\n const end = segment.end; // Do not try adding the cue if the start and end times are invalid.\n\n if (!finite(start) || !finite(end)) {\n return;\n }\n removeCuesFromTrack(start, end, this.segmentMetadataTrack_);\n const Cue = window$1.WebKitDataCue || window$1.VTTCue;\n const value = {\n custom: segment.custom,\n dateTimeObject: segment.dateTimeObject,\n dateTimeString: segment.dateTimeString,\n programDateTime: segment.programDateTime,\n bandwidth: segmentInfo.playlist.attributes.BANDWIDTH,\n resolution: segmentInfo.playlist.attributes.RESOLUTION,\n codecs: segmentInfo.playlist.attributes.CODECS,\n byteLength: segmentInfo.byteLength,\n uri: segmentInfo.uri,\n timeline: segmentInfo.timeline,\n playlist: segmentInfo.playlist.id,\n start,\n end\n };\n const data = JSON.stringify(value);\n const cue = new Cue(start, end, data); // Attach the metadata to the value property of the cue to keep consistency between\n // the differences of WebKitDataCue in safari and VTTCue in other browsers\n\n cue.value = value;\n this.segmentMetadataTrack_.addCue(cue);\n }\n /**\n * Public setter for defining the private replaceSegmentsUntil_ property, which\n * determines when we can return fetchAtBuffer to true if overwriting the buffer.\n *\n * @param {number} bufferedEnd the end of the buffered range to replace segments\n * until currentTime reaches this time.\n */\n\n set replaceSegmentsUntil(bufferedEnd) {\n this.logger_(`Replacing currently buffered segments until ${bufferedEnd}`);\n this.replaceSegmentsUntil_ = bufferedEnd;\n }\n}\nfunction noop() {}\nconst toTitleCase = function (string) {\n if (typeof string !== 'string') {\n return string;\n }\n return string.replace(/./, w => w.toUpperCase());\n};\n\n/**\n * @file source-updater.js\n */\nconst bufferTypes = ['video', 'audio'];\nconst updating = (type, sourceUpdater) => {\n const sourceBuffer = sourceUpdater[`${type}Buffer`];\n return sourceBuffer && sourceBuffer.updating || sourceUpdater.queuePending[type];\n};\nconst nextQueueIndexOfType = (type, queue) => {\n for (let i = 0; i < queue.length; i++) {\n const queueEntry = queue[i];\n if (queueEntry.type === 'mediaSource') {\n // If the next entry is a media source entry (uses multiple source buffers), block\n // processing to allow it to go through first.\n return null;\n }\n if (queueEntry.type === type) {\n return i;\n }\n }\n return null;\n};\nconst shiftQueue = (type, sourceUpdater) => {\n if (sourceUpdater.queue.length === 0) {\n return;\n }\n let queueIndex = 0;\n let queueEntry = sourceUpdater.queue[queueIndex];\n if (queueEntry.type === 'mediaSource') {\n if (!sourceUpdater.updating() && sourceUpdater.mediaSource.readyState !== 'closed') {\n sourceUpdater.queue.shift();\n queueEntry.action(sourceUpdater);\n if (queueEntry.doneFn) {\n queueEntry.doneFn();\n } // Only specific source buffer actions must wait for async updateend events. Media\n // Source actions process synchronously. Therefore, both audio and video source\n // buffers are now clear to process the next queue entries.\n\n shiftQueue('audio', sourceUpdater);\n shiftQueue('video', sourceUpdater);\n } // Media Source actions require both source buffers, so if the media source action\n // couldn't process yet (because one or both source buffers are busy), block other\n // queue actions until both are available and the media source action can process.\n\n return;\n }\n if (type === 'mediaSource') {\n // If the queue was shifted by a media source action (this happens when pushing a\n // media source action onto the queue), then it wasn't from an updateend event from an\n // audio or video source buffer, so there's no change from previous state, and no\n // processing should be done.\n return;\n } // Media source queue entries don't need to consider whether the source updater is\n // started (i.e., source buffers are created) as they don't need the source buffers, but\n // source buffer queue entries do.\n\n if (!sourceUpdater.ready() || sourceUpdater.mediaSource.readyState === 'closed' || updating(type, sourceUpdater)) {\n return;\n }\n if (queueEntry.type !== type) {\n queueIndex = nextQueueIndexOfType(type, sourceUpdater.queue);\n if (queueIndex === null) {\n // Either there's no queue entry that uses this source buffer type in the queue, or\n // there's a media source queue entry before the next entry of this type, in which\n // case wait for that action to process first.\n return;\n }\n queueEntry = sourceUpdater.queue[queueIndex];\n }\n sourceUpdater.queue.splice(queueIndex, 1); // Keep a record that this source buffer type is in use.\n //\n // The queue pending operation must be set before the action is performed in the event\n // that the action results in a synchronous event that is acted upon. For instance, if\n // an exception is thrown that can be handled, it's possible that new actions will be\n // appended to an empty queue and immediately executed, but would not have the correct\n // pending information if this property was set after the action was performed.\n\n sourceUpdater.queuePending[type] = queueEntry;\n queueEntry.action(type, sourceUpdater);\n if (!queueEntry.doneFn) {\n // synchronous operation, process next entry\n sourceUpdater.queuePending[type] = null;\n shiftQueue(type, sourceUpdater);\n return;\n }\n};\nconst cleanupBuffer = (type, sourceUpdater) => {\n const buffer = sourceUpdater[`${type}Buffer`];\n const titleType = toTitleCase(type);\n if (!buffer) {\n return;\n }\n buffer.removeEventListener('updateend', sourceUpdater[`on${titleType}UpdateEnd_`]);\n buffer.removeEventListener('error', sourceUpdater[`on${titleType}Error_`]);\n sourceUpdater.codecs[type] = null;\n sourceUpdater[`${type}Buffer`] = null;\n};\nconst inSourceBuffers = (mediaSource, sourceBuffer) => mediaSource && sourceBuffer && Array.prototype.indexOf.call(mediaSource.sourceBuffers, sourceBuffer) !== -1;\nconst actions = {\n appendBuffer: (bytes, segmentInfo, onError) => (type, sourceUpdater) => {\n const sourceBuffer = sourceUpdater[`${type}Buffer`]; // can't do anything if the media source / source buffer is null\n // or the media source does not contain this source buffer.\n\n if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n return;\n }\n sourceUpdater.logger_(`Appending segment ${segmentInfo.mediaIndex}'s ${bytes.length} bytes to ${type}Buffer`);\n try {\n sourceBuffer.appendBuffer(bytes);\n } catch (e) {\n sourceUpdater.logger_(`Error with code ${e.code} ` + (e.code === QUOTA_EXCEEDED_ERR ? '(QUOTA_EXCEEDED_ERR) ' : '') + `when appending segment ${segmentInfo.mediaIndex} to ${type}Buffer`);\n sourceUpdater.queuePending[type] = null;\n onError(e);\n }\n },\n remove: (start, end) => (type, sourceUpdater) => {\n const sourceBuffer = sourceUpdater[`${type}Buffer`]; // can't do anything if the media source / source buffer is null\n // or the media source does not contain this source buffer.\n\n if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n return;\n }\n sourceUpdater.logger_(`Removing ${start} to ${end} from ${type}Buffer`);\n try {\n sourceBuffer.remove(start, end);\n } catch (e) {\n sourceUpdater.logger_(`Remove ${start} to ${end} from ${type}Buffer failed`);\n }\n },\n timestampOffset: offset => (type, sourceUpdater) => {\n const sourceBuffer = sourceUpdater[`${type}Buffer`]; // can't do anything if the media source / source buffer is null\n // or the media source does not contain this source buffer.\n\n if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n return;\n }\n sourceUpdater.logger_(`Setting ${type}timestampOffset to ${offset}`);\n sourceBuffer.timestampOffset = offset;\n },\n callback: callback => (type, sourceUpdater) => {\n callback();\n },\n endOfStream: error => sourceUpdater => {\n if (sourceUpdater.mediaSource.readyState !== 'open') {\n return;\n }\n sourceUpdater.logger_(`Calling mediaSource endOfStream(${error || ''})`);\n try {\n sourceUpdater.mediaSource.endOfStream(error);\n } catch (e) {\n videojs.log.warn('Failed to call media source endOfStream', e);\n }\n },\n duration: duration => sourceUpdater => {\n sourceUpdater.logger_(`Setting mediaSource duration to ${duration}`);\n try {\n sourceUpdater.mediaSource.duration = duration;\n } catch (e) {\n videojs.log.warn('Failed to set media source duration', e);\n }\n },\n abort: () => (type, sourceUpdater) => {\n if (sourceUpdater.mediaSource.readyState !== 'open') {\n return;\n }\n const sourceBuffer = sourceUpdater[`${type}Buffer`]; // can't do anything if the media source / source buffer is null\n // or the media source does not contain this source buffer.\n\n if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n return;\n }\n sourceUpdater.logger_(`calling abort on ${type}Buffer`);\n try {\n sourceBuffer.abort();\n } catch (e) {\n videojs.log.warn(`Failed to abort on ${type}Buffer`, e);\n }\n },\n addSourceBuffer: (type, codec) => sourceUpdater => {\n const titleType = toTitleCase(type);\n const mime = getMimeForCodec(codec);\n sourceUpdater.logger_(`Adding ${type}Buffer with codec ${codec} to mediaSource`);\n const sourceBuffer = sourceUpdater.mediaSource.addSourceBuffer(mime);\n sourceBuffer.addEventListener('updateend', sourceUpdater[`on${titleType}UpdateEnd_`]);\n sourceBuffer.addEventListener('error', sourceUpdater[`on${titleType}Error_`]);\n sourceUpdater.codecs[type] = codec;\n sourceUpdater[`${type}Buffer`] = sourceBuffer;\n },\n removeSourceBuffer: type => sourceUpdater => {\n const sourceBuffer = sourceUpdater[`${type}Buffer`];\n cleanupBuffer(type, sourceUpdater); // can't do anything if the media source / source buffer is null\n // or the media source does not contain this source buffer.\n\n if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n return;\n }\n sourceUpdater.logger_(`Removing ${type}Buffer with codec ${sourceUpdater.codecs[type]} from mediaSource`);\n try {\n sourceUpdater.mediaSource.removeSourceBuffer(sourceBuffer);\n } catch (e) {\n videojs.log.warn(`Failed to removeSourceBuffer ${type}Buffer`, e);\n }\n },\n changeType: codec => (type, sourceUpdater) => {\n const sourceBuffer = sourceUpdater[`${type}Buffer`];\n const mime = getMimeForCodec(codec); // can't do anything if the media source / source buffer is null\n // or the media source does not contain this source buffer.\n\n if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n return;\n } // do not update codec if we don't need to.\n\n if (sourceUpdater.codecs[type] === codec) {\n return;\n }\n sourceUpdater.logger_(`changing ${type}Buffer codec from ${sourceUpdater.codecs[type]} to ${codec}`);\n sourceBuffer.changeType(mime);\n sourceUpdater.codecs[type] = codec;\n }\n};\nconst pushQueue = ({\n type,\n sourceUpdater,\n action,\n doneFn,\n name\n}) => {\n sourceUpdater.queue.push({\n type,\n action,\n doneFn,\n name\n });\n shiftQueue(type, sourceUpdater);\n};\nconst onUpdateend = (type, sourceUpdater) => e => {\n const buffered = sourceUpdater[`${type}Buffered`]();\n const bufferedAsString = prettyBuffered(buffered);\n sourceUpdater.logger_(`${type} source buffer update end. Buffered: \\n`, bufferedAsString); // Although there should, in theory, be a pending action for any updateend receieved,\n // there are some actions that may trigger updateend events without set definitions in\n // the w3c spec. For instance, setting the duration on the media source may trigger\n // updateend events on source buffers. This does not appear to be in the spec. As such,\n // if we encounter an updateend without a corresponding pending action from our queue\n // for that source buffer type, process the next action.\n\n if (sourceUpdater.queuePending[type]) {\n const doneFn = sourceUpdater.queuePending[type].doneFn;\n sourceUpdater.queuePending[type] = null;\n if (doneFn) {\n // if there's an error, report it\n doneFn(sourceUpdater[`${type}Error_`]);\n }\n }\n shiftQueue(type, sourceUpdater);\n};\n/**\n * A queue of callbacks to be serialized and applied when a\n * MediaSource and its associated SourceBuffers are not in the\n * updating state. It is used by the segment loader to update the\n * underlying SourceBuffers when new data is loaded, for instance.\n *\n * @class SourceUpdater\n * @param {MediaSource} mediaSource the MediaSource to create the SourceBuffer from\n * @param {string} mimeType the desired MIME type of the underlying SourceBuffer\n */\n\nclass SourceUpdater extends videojs.EventTarget {\n constructor(mediaSource) {\n super();\n this.mediaSource = mediaSource;\n this.sourceopenListener_ = () => shiftQueue('mediaSource', this);\n this.mediaSource.addEventListener('sourceopen', this.sourceopenListener_);\n this.logger_ = logger('SourceUpdater'); // initial timestamp offset is 0\n\n this.audioTimestampOffset_ = 0;\n this.videoTimestampOffset_ = 0;\n this.queue = [];\n this.queuePending = {\n audio: null,\n video: null\n };\n this.delayedAudioAppendQueue_ = [];\n this.videoAppendQueued_ = false;\n this.codecs = {};\n this.onVideoUpdateEnd_ = onUpdateend('video', this);\n this.onAudioUpdateEnd_ = onUpdateend('audio', this);\n this.onVideoError_ = e => {\n // used for debugging\n this.videoError_ = e;\n };\n this.onAudioError_ = e => {\n // used for debugging\n this.audioError_ = e;\n };\n this.createdSourceBuffers_ = false;\n this.initializedEme_ = false;\n this.triggeredReady_ = false;\n }\n initializedEme() {\n this.initializedEme_ = true;\n this.triggerReady();\n }\n hasCreatedSourceBuffers() {\n // if false, likely waiting on one of the segment loaders to get enough data to create\n // source buffers\n return this.createdSourceBuffers_;\n }\n hasInitializedAnyEme() {\n return this.initializedEme_;\n }\n ready() {\n return this.hasCreatedSourceBuffers() && this.hasInitializedAnyEme();\n }\n createSourceBuffers(codecs) {\n if (this.hasCreatedSourceBuffers()) {\n // already created them before\n return;\n } // the intial addOrChangeSourceBuffers will always be\n // two add buffers.\n\n this.addOrChangeSourceBuffers(codecs);\n this.createdSourceBuffers_ = true;\n this.trigger('createdsourcebuffers');\n this.triggerReady();\n }\n triggerReady() {\n // only allow ready to be triggered once, this prevents the case\n // where:\n // 1. we trigger createdsourcebuffers\n // 2. ie 11 synchronously initializates eme\n // 3. the synchronous initialization causes us to trigger ready\n // 4. We go back to the ready check in createSourceBuffers and ready is triggered again.\n if (this.ready() && !this.triggeredReady_) {\n this.triggeredReady_ = true;\n this.trigger('ready');\n }\n }\n /**\n * Add a type of source buffer to the media source.\n *\n * @param {string} type\n * The type of source buffer to add.\n *\n * @param {string} codec\n * The codec to add the source buffer with.\n */\n\n addSourceBuffer(type, codec) {\n pushQueue({\n type: 'mediaSource',\n sourceUpdater: this,\n action: actions.addSourceBuffer(type, codec),\n name: 'addSourceBuffer'\n });\n }\n /**\n * call abort on a source buffer.\n *\n * @param {string} type\n * The type of source buffer to call abort on.\n */\n\n abort(type) {\n pushQueue({\n type,\n sourceUpdater: this,\n action: actions.abort(type),\n name: 'abort'\n });\n }\n /**\n * Call removeSourceBuffer and remove a specific type\n * of source buffer on the mediaSource.\n *\n * @param {string} type\n * The type of source buffer to remove.\n */\n\n removeSourceBuffer(type) {\n if (!this.canRemoveSourceBuffer()) {\n videojs.log.error('removeSourceBuffer is not supported!');\n return;\n }\n pushQueue({\n type: 'mediaSource',\n sourceUpdater: this,\n action: actions.removeSourceBuffer(type),\n name: 'removeSourceBuffer'\n });\n }\n /**\n * Whether or not the removeSourceBuffer function is supported\n * on the mediaSource.\n *\n * @return {boolean}\n * if removeSourceBuffer can be called.\n */\n\n canRemoveSourceBuffer() {\n // As of Firefox 83 removeSourceBuffer\n // throws errors, so we report that it does not support this.\n return !videojs.browser.IS_FIREFOX && window$1.MediaSource && window$1.MediaSource.prototype && typeof window$1.MediaSource.prototype.removeSourceBuffer === 'function';\n }\n /**\n * Whether or not the changeType function is supported\n * on our SourceBuffers.\n *\n * @return {boolean}\n * if changeType can be called.\n */\n\n static canChangeType() {\n return window$1.SourceBuffer && window$1.SourceBuffer.prototype && typeof window$1.SourceBuffer.prototype.changeType === 'function';\n }\n /**\n * Whether or not the changeType function is supported\n * on our SourceBuffers.\n *\n * @return {boolean}\n * if changeType can be called.\n */\n\n canChangeType() {\n return this.constructor.canChangeType();\n }\n /**\n * Call the changeType function on a source buffer, given the code and type.\n *\n * @param {string} type\n * The type of source buffer to call changeType on.\n *\n * @param {string} codec\n * The codec string to change type with on the source buffer.\n */\n\n changeType(type, codec) {\n if (!this.canChangeType()) {\n videojs.log.error('changeType is not supported!');\n return;\n }\n pushQueue({\n type,\n sourceUpdater: this,\n action: actions.changeType(codec),\n name: 'changeType'\n });\n }\n /**\n * Add source buffers with a codec or, if they are already created,\n * call changeType on source buffers using changeType.\n *\n * @param {Object} codecs\n * Codecs to switch to\n */\n\n addOrChangeSourceBuffers(codecs) {\n if (!codecs || typeof codecs !== 'object' || Object.keys(codecs).length === 0) {\n throw new Error('Cannot addOrChangeSourceBuffers to undefined codecs');\n }\n Object.keys(codecs).forEach(type => {\n const codec = codecs[type];\n if (!this.hasCreatedSourceBuffers()) {\n return this.addSourceBuffer(type, codec);\n }\n if (this.canChangeType()) {\n this.changeType(type, codec);\n }\n });\n }\n /**\n * Queue an update to append an ArrayBuffer.\n *\n * @param {MediaObject} object containing audioBytes and/or videoBytes\n * @param {Function} done the function to call when done\n * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-appendBuffer-void-ArrayBuffer-data\n */\n\n appendBuffer(options, doneFn) {\n const {\n segmentInfo,\n type,\n bytes\n } = options;\n this.processedAppend_ = true;\n if (type === 'audio' && this.videoBuffer && !this.videoAppendQueued_) {\n this.delayedAudioAppendQueue_.push([options, doneFn]);\n this.logger_(`delayed audio append of ${bytes.length} until video append`);\n return;\n } // In the case of certain errors, for instance, QUOTA_EXCEEDED_ERR, updateend will\n // not be fired. This means that the queue will be blocked until the next action\n // taken by the segment-loader. Provide a mechanism for segment-loader to handle\n // these errors by calling the doneFn with the specific error.\n\n const onError = doneFn;\n pushQueue({\n type,\n sourceUpdater: this,\n action: actions.appendBuffer(bytes, segmentInfo || {\n mediaIndex: -1\n }, onError),\n doneFn,\n name: 'appendBuffer'\n });\n if (type === 'video') {\n this.videoAppendQueued_ = true;\n if (!this.delayedAudioAppendQueue_.length) {\n return;\n }\n const queue = this.delayedAudioAppendQueue_.slice();\n this.logger_(`queuing delayed audio ${queue.length} appendBuffers`);\n this.delayedAudioAppendQueue_.length = 0;\n queue.forEach(que => {\n this.appendBuffer.apply(this, que);\n });\n }\n }\n /**\n * Get the audio buffer's buffered timerange.\n *\n * @return {TimeRange}\n * The audio buffer's buffered time range\n */\n\n audioBuffered() {\n // no media source/source buffer or it isn't in the media sources\n // source buffer list\n if (!inSourceBuffers(this.mediaSource, this.audioBuffer)) {\n return createTimeRanges();\n }\n return this.audioBuffer.buffered ? this.audioBuffer.buffered : createTimeRanges();\n }\n /**\n * Get the video buffer's buffered timerange.\n *\n * @return {TimeRange}\n * The video buffer's buffered time range\n */\n\n videoBuffered() {\n // no media source/source buffer or it isn't in the media sources\n // source buffer list\n if (!inSourceBuffers(this.mediaSource, this.videoBuffer)) {\n return createTimeRanges();\n }\n return this.videoBuffer.buffered ? this.videoBuffer.buffered : createTimeRanges();\n }\n /**\n * Get a combined video/audio buffer's buffered timerange.\n *\n * @return {TimeRange}\n * the combined time range\n */\n\n buffered() {\n const video = inSourceBuffers(this.mediaSource, this.videoBuffer) ? this.videoBuffer : null;\n const audio = inSourceBuffers(this.mediaSource, this.audioBuffer) ? this.audioBuffer : null;\n if (audio && !video) {\n return this.audioBuffered();\n }\n if (video && !audio) {\n return this.videoBuffered();\n }\n return bufferIntersection(this.audioBuffered(), this.videoBuffered());\n }\n /**\n * Add a callback to the queue that will set duration on the mediaSource.\n *\n * @param {number} duration\n * The duration to set\n *\n * @param {Function} [doneFn]\n * function to run after duration has been set.\n */\n\n setDuration(duration, doneFn = noop) {\n // In order to set the duration on the media source, it's necessary to wait for all\n // source buffers to no longer be updating. \"If the updating attribute equals true on\n // any SourceBuffer in sourceBuffers, then throw an InvalidStateError exception and\n // abort these steps.\" (source: https://www.w3.org/TR/media-source/#attributes).\n pushQueue({\n type: 'mediaSource',\n sourceUpdater: this,\n action: actions.duration(duration),\n name: 'duration',\n doneFn\n });\n }\n /**\n * Add a mediaSource endOfStream call to the queue\n *\n * @param {Error} [error]\n * Call endOfStream with an error\n *\n * @param {Function} [doneFn]\n * A function that should be called when the\n * endOfStream call has finished.\n */\n\n endOfStream(error = null, doneFn = noop) {\n if (typeof error !== 'string') {\n error = undefined;\n } // In order to set the duration on the media source, it's necessary to wait for all\n // source buffers to no longer be updating. \"If the updating attribute equals true on\n // any SourceBuffer in sourceBuffers, then throw an InvalidStateError exception and\n // abort these steps.\" (source: https://www.w3.org/TR/media-source/#attributes).\n\n pushQueue({\n type: 'mediaSource',\n sourceUpdater: this,\n action: actions.endOfStream(error),\n name: 'endOfStream',\n doneFn\n });\n }\n /**\n * Queue an update to remove a time range from the buffer.\n *\n * @param {number} start where to start the removal\n * @param {number} end where to end the removal\n * @param {Function} [done=noop] optional callback to be executed when the remove\n * operation is complete\n * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-remove-void-double-start-unrestricted-double-end\n */\n\n removeAudio(start, end, done = noop) {\n if (!this.audioBuffered().length || this.audioBuffered().end(0) === 0) {\n done();\n return;\n }\n pushQueue({\n type: 'audio',\n sourceUpdater: this,\n action: actions.remove(start, end),\n doneFn: done,\n name: 'remove'\n });\n }\n /**\n * Queue an update to remove a time range from the buffer.\n *\n * @param {number} start where to start the removal\n * @param {number} end where to end the removal\n * @param {Function} [done=noop] optional callback to be executed when the remove\n * operation is complete\n * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-remove-void-double-start-unrestricted-double-end\n */\n\n removeVideo(start, end, done = noop) {\n if (!this.videoBuffered().length || this.videoBuffered().end(0) === 0) {\n done();\n return;\n }\n pushQueue({\n type: 'video',\n sourceUpdater: this,\n action: actions.remove(start, end),\n doneFn: done,\n name: 'remove'\n });\n }\n /**\n * Whether the underlying sourceBuffer is updating or not\n *\n * @return {boolean} the updating status of the SourceBuffer\n */\n\n updating() {\n // the audio/video source buffer is updating\n if (updating('audio', this) || updating('video', this)) {\n return true;\n }\n return false;\n }\n /**\n * Set/get the timestampoffset on the audio SourceBuffer\n *\n * @return {number} the timestamp offset\n */\n\n audioTimestampOffset(offset) {\n if (typeof offset !== 'undefined' && this.audioBuffer &&\n // no point in updating if it's the same\n this.audioTimestampOffset_ !== offset) {\n pushQueue({\n type: 'audio',\n sourceUpdater: this,\n action: actions.timestampOffset(offset),\n name: 'timestampOffset'\n });\n this.audioTimestampOffset_ = offset;\n }\n return this.audioTimestampOffset_;\n }\n /**\n * Set/get the timestampoffset on the video SourceBuffer\n *\n * @return {number} the timestamp offset\n */\n\n videoTimestampOffset(offset) {\n if (typeof offset !== 'undefined' && this.videoBuffer &&\n // no point in updating if it's the same\n this.videoTimestampOffset !== offset) {\n pushQueue({\n type: 'video',\n sourceUpdater: this,\n action: actions.timestampOffset(offset),\n name: 'timestampOffset'\n });\n this.videoTimestampOffset_ = offset;\n }\n return this.videoTimestampOffset_;\n }\n /**\n * Add a function to the queue that will be called\n * when it is its turn to run in the audio queue.\n *\n * @param {Function} callback\n * The callback to queue.\n */\n\n audioQueueCallback(callback) {\n if (!this.audioBuffer) {\n return;\n }\n pushQueue({\n type: 'audio',\n sourceUpdater: this,\n action: actions.callback(callback),\n name: 'callback'\n });\n }\n /**\n * Add a function to the queue that will be called\n * when it is its turn to run in the video queue.\n *\n * @param {Function} callback\n * The callback to queue.\n */\n\n videoQueueCallback(callback) {\n if (!this.videoBuffer) {\n return;\n }\n pushQueue({\n type: 'video',\n sourceUpdater: this,\n action: actions.callback(callback),\n name: 'callback'\n });\n }\n /**\n * dispose of the source updater and the underlying sourceBuffer\n */\n\n dispose() {\n this.trigger('dispose');\n bufferTypes.forEach(type => {\n this.abort(type);\n if (this.canRemoveSourceBuffer()) {\n this.removeSourceBuffer(type);\n } else {\n this[`${type}QueueCallback`](() => cleanupBuffer(type, this));\n }\n });\n this.videoAppendQueued_ = false;\n this.delayedAudioAppendQueue_.length = 0;\n if (this.sourceopenListener_) {\n this.mediaSource.removeEventListener('sourceopen', this.sourceopenListener_);\n }\n this.off();\n }\n}\nconst uint8ToUtf8 = uintArray => decodeURIComponent(escape(String.fromCharCode.apply(null, uintArray)));\n\n/**\n * @file vtt-segment-loader.js\n */\nconst VTT_LINE_TERMINATORS = new Uint8Array('\\n\\n'.split('').map(char => char.charCodeAt(0)));\nclass NoVttJsError extends Error {\n constructor() {\n super('Trying to parse received VTT cues, but there is no WebVTT. Make sure vtt.js is loaded.');\n }\n}\n/**\n * An object that manages segment loading and appending.\n *\n * @class VTTSegmentLoader\n * @param {Object} options required and optional options\n * @extends videojs.EventTarget\n */\n\nclass VTTSegmentLoader extends SegmentLoader {\n constructor(settings, options = {}) {\n super(settings, options); // SegmentLoader requires a MediaSource be specified or it will throw an error;\n // however, VTTSegmentLoader has no need of a media source, so delete the reference\n\n this.mediaSource_ = null;\n this.subtitlesTrack_ = null;\n this.loaderType_ = 'subtitle';\n this.featuresNativeTextTracks_ = settings.featuresNativeTextTracks;\n this.loadVttJs = settings.loadVttJs; // The VTT segment will have its own time mappings. Saving VTT segment timing info in\n // the sync controller leads to improper behavior.\n\n this.shouldSaveSegmentTimingInfo_ = false;\n }\n createTransmuxer_() {\n // don't need to transmux any subtitles\n return null;\n }\n /**\n * Indicates which time ranges are buffered\n *\n * @return {TimeRange}\n * TimeRange object representing the current buffered ranges\n */\n\n buffered_() {\n if (!this.subtitlesTrack_ || !this.subtitlesTrack_.cues || !this.subtitlesTrack_.cues.length) {\n return createTimeRanges();\n }\n const cues = this.subtitlesTrack_.cues;\n const start = cues[0].startTime;\n const end = cues[cues.length - 1].startTime;\n return createTimeRanges([[start, end]]);\n }\n /**\n * Gets and sets init segment for the provided map\n *\n * @param {Object} map\n * The map object representing the init segment to get or set\n * @param {boolean=} set\n * If true, the init segment for the provided map should be saved\n * @return {Object}\n * map object for desired init segment\n */\n\n initSegmentForMap(map, set = false) {\n if (!map) {\n return null;\n }\n const id = initSegmentId(map);\n let storedMap = this.initSegments_[id];\n if (set && !storedMap && map.bytes) {\n // append WebVTT line terminators to the media initialization segment if it exists\n // to follow the WebVTT spec (https://w3c.github.io/webvtt/#file-structure) that\n // requires two or more WebVTT line terminators between the WebVTT header and the\n // rest of the file\n const combinedByteLength = VTT_LINE_TERMINATORS.byteLength + map.bytes.byteLength;\n const combinedSegment = new Uint8Array(combinedByteLength);\n combinedSegment.set(map.bytes);\n combinedSegment.set(VTT_LINE_TERMINATORS, map.bytes.byteLength);\n this.initSegments_[id] = storedMap = {\n resolvedUri: map.resolvedUri,\n byterange: map.byterange,\n bytes: combinedSegment\n };\n }\n return storedMap || map;\n }\n /**\n * Returns true if all configuration required for loading is present, otherwise false.\n *\n * @return {boolean} True if the all configuration is ready for loading\n * @private\n */\n\n couldBeginLoading_() {\n return this.playlist_ && this.subtitlesTrack_ && !this.paused();\n }\n /**\n * Once all the starting parameters have been specified, begin\n * operation. This method should only be invoked from the INIT\n * state.\n *\n * @private\n */\n\n init_() {\n this.state = 'READY';\n this.resetEverything();\n return this.monitorBuffer_();\n }\n /**\n * Set a subtitle track on the segment loader to add subtitles to\n *\n * @param {TextTrack=} track\n * The text track to add loaded subtitles to\n * @return {TextTrack}\n * Returns the subtitles track\n */\n\n track(track) {\n if (typeof track === 'undefined') {\n return this.subtitlesTrack_;\n }\n this.subtitlesTrack_ = track; // if we were unpaused but waiting for a sourceUpdater, start\n // buffering now\n\n if (this.state === 'INIT' && this.couldBeginLoading_()) {\n this.init_();\n }\n return this.subtitlesTrack_;\n }\n /**\n * Remove any data in the source buffer between start and end times\n *\n * @param {number} start - the start time of the region to remove from the buffer\n * @param {number} end - the end time of the region to remove from the buffer\n */\n\n remove(start, end) {\n removeCuesFromTrack(start, end, this.subtitlesTrack_);\n }\n /**\n * fill the buffer with segements unless the sourceBuffers are\n * currently updating\n *\n * Note: this function should only ever be called by monitorBuffer_\n * and never directly\n *\n * @private\n */\n\n fillBuffer_() {\n // see if we need to begin loading immediately\n const segmentInfo = this.chooseNextRequest_();\n if (!segmentInfo) {\n return;\n }\n if (this.syncController_.timestampOffsetForTimeline(segmentInfo.timeline) === null) {\n // We don't have the timestamp offset that we need to sync subtitles.\n // Rerun on a timestamp offset or user interaction.\n const checkTimestampOffset = () => {\n this.state = 'READY';\n if (!this.paused()) {\n // if not paused, queue a buffer check as soon as possible\n this.monitorBuffer_();\n }\n };\n this.syncController_.one('timestampoffset', checkTimestampOffset);\n this.state = 'WAITING_ON_TIMELINE';\n return;\n }\n this.loadSegment_(segmentInfo);\n } // never set a timestamp offset for vtt segments.\n\n timestampOffsetForSegment_() {\n return null;\n }\n chooseNextRequest_() {\n return this.skipEmptySegments_(super.chooseNextRequest_());\n }\n /**\n * Prevents the segment loader from requesting segments we know contain no subtitles\n * by walking forward until we find the next segment that we don't know whether it is\n * empty or not.\n *\n * @param {Object} segmentInfo\n * a segment info object that describes the current segment\n * @return {Object}\n * a segment info object that describes the current segment\n */\n\n skipEmptySegments_(segmentInfo) {\n while (segmentInfo && segmentInfo.segment.empty) {\n // stop at the last possible segmentInfo\n if (segmentInfo.mediaIndex + 1 >= segmentInfo.playlist.segments.length) {\n segmentInfo = null;\n break;\n }\n segmentInfo = this.generateSegmentInfo_({\n playlist: segmentInfo.playlist,\n mediaIndex: segmentInfo.mediaIndex + 1,\n startOfSegment: segmentInfo.startOfSegment + segmentInfo.duration,\n isSyncRequest: segmentInfo.isSyncRequest\n });\n }\n return segmentInfo;\n }\n stopForError(error) {\n this.error(error);\n this.state = 'READY';\n this.pause();\n this.trigger('error');\n }\n /**\n * append a decrypted segement to the SourceBuffer through a SourceUpdater\n *\n * @private\n */\n\n segmentRequestFinished_(error, simpleSegment, result) {\n if (!this.subtitlesTrack_) {\n this.state = 'READY';\n return;\n }\n this.saveTransferStats_(simpleSegment.stats); // the request was aborted\n\n if (!this.pendingSegment_) {\n this.state = 'READY';\n this.mediaRequestsAborted += 1;\n return;\n }\n if (error) {\n if (error.code === REQUEST_ERRORS.TIMEOUT) {\n this.handleTimeout_();\n }\n if (error.code === REQUEST_ERRORS.ABORTED) {\n this.mediaRequestsAborted += 1;\n } else {\n this.mediaRequestsErrored += 1;\n }\n this.stopForError(error);\n return;\n }\n const segmentInfo = this.pendingSegment_; // although the VTT segment loader bandwidth isn't really used, it's good to\n // maintain functionality between segment loaders\n\n this.saveBandwidthRelatedStats_(segmentInfo.duration, simpleSegment.stats); // if this request included a segment key, save that data in the cache\n\n if (simpleSegment.key) {\n this.segmentKey(simpleSegment.key, true);\n }\n this.state = 'APPENDING'; // used for tests\n\n this.trigger('appending');\n const segment = segmentInfo.segment;\n if (segment.map) {\n segment.map.bytes = simpleSegment.map.bytes;\n }\n segmentInfo.bytes = simpleSegment.bytes; // Make sure that vttjs has loaded, otherwise, load it and wait till it finished loading\n\n if (typeof window$1.WebVTT !== 'function' && typeof this.loadVttJs === 'function') {\n this.state = 'WAITING_ON_VTTJS'; // should be fine to call multiple times\n // script will be loaded once but multiple listeners will be added to the queue, which is expected.\n\n this.loadVttJs().then(() => this.segmentRequestFinished_(error, simpleSegment, result), () => this.stopForError({\n message: 'Error loading vtt.js'\n }));\n return;\n }\n segment.requested = true;\n try {\n this.parseVTTCues_(segmentInfo);\n } catch (e) {\n this.stopForError({\n message: e.message\n });\n return;\n }\n this.updateTimeMapping_(segmentInfo, this.syncController_.timelines[segmentInfo.timeline], this.playlist_);\n if (segmentInfo.cues.length) {\n segmentInfo.timingInfo = {\n start: segmentInfo.cues[0].startTime,\n end: segmentInfo.cues[segmentInfo.cues.length - 1].endTime\n };\n } else {\n segmentInfo.timingInfo = {\n start: segmentInfo.startOfSegment,\n end: segmentInfo.startOfSegment + segmentInfo.duration\n };\n }\n if (segmentInfo.isSyncRequest) {\n this.trigger('syncinfoupdate');\n this.pendingSegment_ = null;\n this.state = 'READY';\n return;\n }\n segmentInfo.byteLength = segmentInfo.bytes.byteLength;\n this.mediaSecondsLoaded += segment.duration; // Create VTTCue instances for each cue in the new segment and add them to\n // the subtitle track\n\n segmentInfo.cues.forEach(cue => {\n this.subtitlesTrack_.addCue(this.featuresNativeTextTracks_ ? new window$1.VTTCue(cue.startTime, cue.endTime, cue.text) : cue);\n }); // Remove any duplicate cues from the subtitle track. The WebVTT spec allows\n // cues to have identical time-intervals, but if the text is also identical\n // we can safely assume it is a duplicate that can be removed (ex. when a cue\n // \"overlaps\" VTT segments)\n\n removeDuplicateCuesFromTrack(this.subtitlesTrack_);\n this.handleAppendsDone_();\n }\n handleData_() {// noop as we shouldn't be getting video/audio data captions\n // that we do not support here.\n }\n updateTimingInfoEnd_() {// noop\n }\n /**\n * Uses the WebVTT parser to parse the segment response\n *\n * @throws NoVttJsError\n *\n * @param {Object} segmentInfo\n * a segment info object that describes the current segment\n * @private\n */\n\n parseVTTCues_(segmentInfo) {\n let decoder;\n let decodeBytesToString = false;\n if (typeof window$1.WebVTT !== 'function') {\n // caller is responsible for exception handling.\n throw new NoVttJsError();\n }\n if (typeof window$1.TextDecoder === 'function') {\n decoder = new window$1.TextDecoder('utf8');\n } else {\n decoder = window$1.WebVTT.StringDecoder();\n decodeBytesToString = true;\n }\n const parser = new window$1.WebVTT.Parser(window$1, window$1.vttjs, decoder);\n segmentInfo.cues = [];\n segmentInfo.timestampmap = {\n MPEGTS: 0,\n LOCAL: 0\n };\n parser.oncue = segmentInfo.cues.push.bind(segmentInfo.cues);\n parser.ontimestampmap = map => {\n segmentInfo.timestampmap = map;\n };\n parser.onparsingerror = error => {\n videojs.log.warn('Error encountered when parsing cues: ' + error.message);\n };\n if (segmentInfo.segment.map) {\n let mapData = segmentInfo.segment.map.bytes;\n if (decodeBytesToString) {\n mapData = uint8ToUtf8(mapData);\n }\n parser.parse(mapData);\n }\n let segmentData = segmentInfo.bytes;\n if (decodeBytesToString) {\n segmentData = uint8ToUtf8(segmentData);\n }\n parser.parse(segmentData);\n parser.flush();\n }\n /**\n * Updates the start and end times of any cues parsed by the WebVTT parser using\n * the information parsed from the X-TIMESTAMP-MAP header and a TS to media time mapping\n * from the SyncController\n *\n * @param {Object} segmentInfo\n * a segment info object that describes the current segment\n * @param {Object} mappingObj\n * object containing a mapping from TS to media time\n * @param {Object} playlist\n * the playlist object containing the segment\n * @private\n */\n\n updateTimeMapping_(segmentInfo, mappingObj, playlist) {\n const segment = segmentInfo.segment;\n if (!mappingObj) {\n // If the sync controller does not have a mapping of TS to Media Time for the\n // timeline, then we don't have enough information to update the cue\n // start/end times\n return;\n }\n if (!segmentInfo.cues.length) {\n // If there are no cues, we also do not have enough information to figure out\n // segment timing. Mark that the segment contains no cues so we don't re-request\n // an empty segment.\n segment.empty = true;\n return;\n }\n const timestampmap = segmentInfo.timestampmap;\n const diff = timestampmap.MPEGTS / ONE_SECOND_IN_TS - timestampmap.LOCAL + mappingObj.mapping;\n segmentInfo.cues.forEach(cue => {\n // First convert cue time to TS time using the timestamp-map provided within the vtt\n cue.startTime += diff;\n cue.endTime += diff;\n });\n if (!playlist.syncInfo) {\n const firstStart = segmentInfo.cues[0].startTime;\n const lastStart = segmentInfo.cues[segmentInfo.cues.length - 1].startTime;\n playlist.syncInfo = {\n mediaSequence: playlist.mediaSequence + segmentInfo.mediaIndex,\n time: Math.min(firstStart, lastStart - segment.duration)\n };\n }\n }\n}\n\n/**\n * @file ad-cue-tags.js\n */\n/**\n * Searches for an ad cue that overlaps with the given mediaTime\n *\n * @param {Object} track\n * the track to find the cue for\n *\n * @param {number} mediaTime\n * the time to find the cue at\n *\n * @return {Object|null}\n * the found cue or null\n */\n\nconst findAdCue = function (track, mediaTime) {\n const cues = track.cues;\n for (let i = 0; i < cues.length; i++) {\n const cue = cues[i];\n if (mediaTime >= cue.adStartTime && mediaTime <= cue.adEndTime) {\n return cue;\n }\n }\n return null;\n};\nconst updateAdCues = function (media, track, offset = 0) {\n if (!media.segments) {\n return;\n }\n let mediaTime = offset;\n let cue;\n for (let i = 0; i < media.segments.length; i++) {\n const segment = media.segments[i];\n if (!cue) {\n // Since the cues will span for at least the segment duration, adding a fudge\n // factor of half segment duration will prevent duplicate cues from being\n // created when timing info is not exact (e.g. cue start time initialized\n // at 10.006677, but next call mediaTime is 10.003332 )\n cue = findAdCue(track, mediaTime + segment.duration / 2);\n }\n if (cue) {\n if ('cueIn' in segment) {\n // Found a CUE-IN so end the cue\n cue.endTime = mediaTime;\n cue.adEndTime = mediaTime;\n mediaTime += segment.duration;\n cue = null;\n continue;\n }\n if (mediaTime < cue.endTime) {\n // Already processed this mediaTime for this cue\n mediaTime += segment.duration;\n continue;\n } // otherwise extend cue until a CUE-IN is found\n\n cue.endTime += segment.duration;\n } else {\n if ('cueOut' in segment) {\n cue = new window$1.VTTCue(mediaTime, mediaTime + segment.duration, segment.cueOut);\n cue.adStartTime = mediaTime; // Assumes tag format to be\n // #EXT-X-CUE-OUT:30\n\n cue.adEndTime = mediaTime + parseFloat(segment.cueOut);\n track.addCue(cue);\n }\n if ('cueOutCont' in segment) {\n // Entered into the middle of an ad cue\n // Assumes tag formate to be\n // #EXT-X-CUE-OUT-CONT:10/30\n const [adOffset, adTotal] = segment.cueOutCont.split('/').map(parseFloat);\n cue = new window$1.VTTCue(mediaTime, mediaTime + segment.duration, '');\n cue.adStartTime = mediaTime - adOffset;\n cue.adEndTime = cue.adStartTime + adTotal;\n track.addCue(cue);\n }\n }\n mediaTime += segment.duration;\n }\n};\n\n/**\n * @file sync-controller.js\n */\n// synchronize expired playlist segments.\n// the max media sequence diff is 48 hours of live stream\n// content with two second segments. Anything larger than that\n// will likely be invalid.\n\nconst MAX_MEDIA_SEQUENCE_DIFF_FOR_SYNC = 86400;\nconst syncPointStrategies = [\n// Stategy \"VOD\": Handle the VOD-case where the sync-point is *always*\n// the equivalence display-time 0 === segment-index 0\n{\n name: 'VOD',\n run: (syncController, playlist, duration, currentTimeline, currentTime) => {\n if (duration !== Infinity) {\n const syncPoint = {\n time: 0,\n segmentIndex: 0,\n partIndex: null\n };\n return syncPoint;\n }\n return null;\n }\n},\n// Stategy \"ProgramDateTime\": We have a program-date-time tag in this playlist\n{\n name: 'ProgramDateTime',\n run: (syncController, playlist, duration, currentTimeline, currentTime) => {\n if (!Object.keys(syncController.timelineToDatetimeMappings).length) {\n return null;\n }\n let syncPoint = null;\n let lastDistance = null;\n const partsAndSegments = getPartsAndSegments(playlist);\n currentTime = currentTime || 0;\n for (let i = 0; i < partsAndSegments.length; i++) {\n // start from the end and loop backwards for live\n // or start from the front and loop forwards for non-live\n const index = playlist.endList || currentTime === 0 ? i : partsAndSegments.length - (i + 1);\n const partAndSegment = partsAndSegments[index];\n const segment = partAndSegment.segment;\n const datetimeMapping = syncController.timelineToDatetimeMappings[segment.timeline];\n if (!datetimeMapping || !segment.dateTimeObject) {\n continue;\n }\n const segmentTime = segment.dateTimeObject.getTime() / 1000;\n let start = segmentTime + datetimeMapping; // take part duration into account.\n\n if (segment.parts && typeof partAndSegment.partIndex === 'number') {\n for (let z = 0; z < partAndSegment.partIndex; z++) {\n start += segment.parts[z].duration;\n }\n }\n const distance = Math.abs(currentTime - start); // Once the distance begins to increase, or if distance is 0, we have passed\n // currentTime and can stop looking for better candidates\n\n if (lastDistance !== null && (distance === 0 || lastDistance < distance)) {\n break;\n }\n lastDistance = distance;\n syncPoint = {\n time: start,\n segmentIndex: partAndSegment.segmentIndex,\n partIndex: partAndSegment.partIndex\n };\n }\n return syncPoint;\n }\n},\n// Stategy \"Segment\": We have a known time mapping for a timeline and a\n// segment in the current timeline with timing data\n{\n name: 'Segment',\n run: (syncController, playlist, duration, currentTimeline, currentTime) => {\n let syncPoint = null;\n let lastDistance = null;\n currentTime = currentTime || 0;\n const partsAndSegments = getPartsAndSegments(playlist);\n for (let i = 0; i < partsAndSegments.length; i++) {\n // start from the end and loop backwards for live\n // or start from the front and loop forwards for non-live\n const index = playlist.endList || currentTime === 0 ? i : partsAndSegments.length - (i + 1);\n const partAndSegment = partsAndSegments[index];\n const segment = partAndSegment.segment;\n const start = partAndSegment.part && partAndSegment.part.start || segment && segment.start;\n if (segment.timeline === currentTimeline && typeof start !== 'undefined') {\n const distance = Math.abs(currentTime - start); // Once the distance begins to increase, we have passed\n // currentTime and can stop looking for better candidates\n\n if (lastDistance !== null && lastDistance < distance) {\n break;\n }\n if (!syncPoint || lastDistance === null || lastDistance >= distance) {\n lastDistance = distance;\n syncPoint = {\n time: start,\n segmentIndex: partAndSegment.segmentIndex,\n partIndex: partAndSegment.partIndex\n };\n }\n }\n }\n return syncPoint;\n }\n},\n// Stategy \"Discontinuity\": We have a discontinuity with a known\n// display-time\n{\n name: 'Discontinuity',\n run: (syncController, playlist, duration, currentTimeline, currentTime) => {\n let syncPoint = null;\n currentTime = currentTime || 0;\n if (playlist.discontinuityStarts && playlist.discontinuityStarts.length) {\n let lastDistance = null;\n for (let i = 0; i < playlist.discontinuityStarts.length; i++) {\n const segmentIndex = playlist.discontinuityStarts[i];\n const discontinuity = playlist.discontinuitySequence + i + 1;\n const discontinuitySync = syncController.discontinuities[discontinuity];\n if (discontinuitySync) {\n const distance = Math.abs(currentTime - discontinuitySync.time); // Once the distance begins to increase, we have passed\n // currentTime and can stop looking for better candidates\n\n if (lastDistance !== null && lastDistance < distance) {\n break;\n }\n if (!syncPoint || lastDistance === null || lastDistance >= distance) {\n lastDistance = distance;\n syncPoint = {\n time: discontinuitySync.time,\n segmentIndex,\n partIndex: null\n };\n }\n }\n }\n }\n return syncPoint;\n }\n},\n// Stategy \"Playlist\": We have a playlist with a known mapping of\n// segment index to display time\n{\n name: 'Playlist',\n run: (syncController, playlist, duration, currentTimeline, currentTime) => {\n if (playlist.syncInfo) {\n const syncPoint = {\n time: playlist.syncInfo.time,\n segmentIndex: playlist.syncInfo.mediaSequence - playlist.mediaSequence,\n partIndex: null\n };\n return syncPoint;\n }\n return null;\n }\n}];\nclass SyncController extends videojs.EventTarget {\n constructor(options = {}) {\n super(); // ...for synching across variants\n\n this.timelines = [];\n this.discontinuities = [];\n this.timelineToDatetimeMappings = {};\n this.logger_ = logger('SyncController');\n }\n /**\n * Find a sync-point for the playlist specified\n *\n * A sync-point is defined as a known mapping from display-time to\n * a segment-index in the current playlist.\n *\n * @param {Playlist} playlist\n * The playlist that needs a sync-point\n * @param {number} duration\n * Duration of the MediaSource (Infinite if playing a live source)\n * @param {number} currentTimeline\n * The last timeline from which a segment was loaded\n * @return {Object}\n * A sync-point object\n */\n\n getSyncPoint(playlist, duration, currentTimeline, currentTime) {\n const syncPoints = this.runStrategies_(playlist, duration, currentTimeline, currentTime);\n if (!syncPoints.length) {\n // Signal that we need to attempt to get a sync-point manually\n // by fetching a segment in the playlist and constructing\n // a sync-point from that information\n return null;\n } // Now find the sync-point that is closest to the currentTime because\n // that should result in the most accurate guess about which segment\n // to fetch\n\n return this.selectSyncPoint_(syncPoints, {\n key: 'time',\n value: currentTime\n });\n }\n /**\n * Calculate the amount of time that has expired off the playlist during playback\n *\n * @param {Playlist} playlist\n * Playlist object to calculate expired from\n * @param {number} duration\n * Duration of the MediaSource (Infinity if playling a live source)\n * @return {number|null}\n * The amount of time that has expired off the playlist during playback. Null\n * if no sync-points for the playlist can be found.\n */\n\n getExpiredTime(playlist, duration) {\n if (!playlist || !playlist.segments) {\n return null;\n }\n const syncPoints = this.runStrategies_(playlist, duration, playlist.discontinuitySequence, 0); // Without sync-points, there is not enough information to determine the expired time\n\n if (!syncPoints.length) {\n return null;\n }\n const syncPoint = this.selectSyncPoint_(syncPoints, {\n key: 'segmentIndex',\n value: 0\n }); // If the sync-point is beyond the start of the playlist, we want to subtract the\n // duration from index 0 to syncPoint.segmentIndex instead of adding.\n\n if (syncPoint.segmentIndex > 0) {\n syncPoint.time *= -1;\n }\n return Math.abs(syncPoint.time + sumDurations({\n defaultDuration: playlist.targetDuration,\n durationList: playlist.segments,\n startIndex: syncPoint.segmentIndex,\n endIndex: 0\n }));\n }\n /**\n * Runs each sync-point strategy and returns a list of sync-points returned by the\n * strategies\n *\n * @private\n * @param {Playlist} playlist\n * The playlist that needs a sync-point\n * @param {number} duration\n * Duration of the MediaSource (Infinity if playing a live source)\n * @param {number} currentTimeline\n * The last timeline from which a segment was loaded\n * @return {Array}\n * A list of sync-point objects\n */\n\n runStrategies_(playlist, duration, currentTimeline, currentTime) {\n const syncPoints = []; // Try to find a sync-point in by utilizing various strategies...\n\n for (let i = 0; i < syncPointStrategies.length; i++) {\n const strategy = syncPointStrategies[i];\n const syncPoint = strategy.run(this, playlist, duration, currentTimeline, currentTime);\n if (syncPoint) {\n syncPoint.strategy = strategy.name;\n syncPoints.push({\n strategy: strategy.name,\n syncPoint\n });\n }\n }\n return syncPoints;\n }\n /**\n * Selects the sync-point nearest the specified target\n *\n * @private\n * @param {Array} syncPoints\n * List of sync-points to select from\n * @param {Object} target\n * Object specifying the property and value we are targeting\n * @param {string} target.key\n * Specifies the property to target. Must be either 'time' or 'segmentIndex'\n * @param {number} target.value\n * The value to target for the specified key.\n * @return {Object}\n * The sync-point nearest the target\n */\n\n selectSyncPoint_(syncPoints, target) {\n let bestSyncPoint = syncPoints[0].syncPoint;\n let bestDistance = Math.abs(syncPoints[0].syncPoint[target.key] - target.value);\n let bestStrategy = syncPoints[0].strategy;\n for (let i = 1; i < syncPoints.length; i++) {\n const newDistance = Math.abs(syncPoints[i].syncPoint[target.key] - target.value);\n if (newDistance < bestDistance) {\n bestDistance = newDistance;\n bestSyncPoint = syncPoints[i].syncPoint;\n bestStrategy = syncPoints[i].strategy;\n }\n }\n this.logger_(`syncPoint for [${target.key}: ${target.value}] chosen with strategy` + ` [${bestStrategy}]: [time:${bestSyncPoint.time},` + ` segmentIndex:${bestSyncPoint.segmentIndex}` + (typeof bestSyncPoint.partIndex === 'number' ? `,partIndex:${bestSyncPoint.partIndex}` : '') + ']');\n return bestSyncPoint;\n }\n /**\n * Save any meta-data present on the segments when segments leave\n * the live window to the playlist to allow for synchronization at the\n * playlist level later.\n *\n * @param {Playlist} oldPlaylist - The previous active playlist\n * @param {Playlist} newPlaylist - The updated and most current playlist\n */\n\n saveExpiredSegmentInfo(oldPlaylist, newPlaylist) {\n const mediaSequenceDiff = newPlaylist.mediaSequence - oldPlaylist.mediaSequence; // Ignore large media sequence gaps\n\n if (mediaSequenceDiff > MAX_MEDIA_SEQUENCE_DIFF_FOR_SYNC) {\n videojs.log.warn(`Not saving expired segment info. Media sequence gap ${mediaSequenceDiff} is too large.`);\n return;\n } // When a segment expires from the playlist and it has a start time\n // save that information as a possible sync-point reference in future\n\n for (let i = mediaSequenceDiff - 1; i >= 0; i--) {\n const lastRemovedSegment = oldPlaylist.segments[i];\n if (lastRemovedSegment && typeof lastRemovedSegment.start !== 'undefined') {\n newPlaylist.syncInfo = {\n mediaSequence: oldPlaylist.mediaSequence + i,\n time: lastRemovedSegment.start\n };\n this.logger_(`playlist refresh sync: [time:${newPlaylist.syncInfo.time},` + ` mediaSequence: ${newPlaylist.syncInfo.mediaSequence}]`);\n this.trigger('syncinfoupdate');\n break;\n }\n }\n }\n /**\n * Save the mapping from playlist's ProgramDateTime to display. This should only happen\n * before segments start to load.\n *\n * @param {Playlist} playlist - The currently active playlist\n */\n\n setDateTimeMappingForStart(playlist) {\n // It's possible for the playlist to be updated before playback starts, meaning time\n // zero is not yet set. If, during these playlist refreshes, a discontinuity is\n // crossed, then the old time zero mapping (for the prior timeline) would be retained\n // unless the mappings are cleared.\n this.timelineToDatetimeMappings = {};\n if (playlist.segments && playlist.segments.length && playlist.segments[0].dateTimeObject) {\n const firstSegment = playlist.segments[0];\n const playlistTimestamp = firstSegment.dateTimeObject.getTime() / 1000;\n this.timelineToDatetimeMappings[firstSegment.timeline] = -playlistTimestamp;\n }\n }\n /**\n * Calculates and saves timeline mappings, playlist sync info, and segment timing values\n * based on the latest timing information.\n *\n * @param {Object} options\n * Options object\n * @param {SegmentInfo} options.segmentInfo\n * The current active request information\n * @param {boolean} options.shouldSaveTimelineMapping\n * If there's a timeline change, determines if the timeline mapping should be\n * saved for timeline mapping and program date time mappings.\n */\n\n saveSegmentTimingInfo({\n segmentInfo,\n shouldSaveTimelineMapping\n }) {\n const didCalculateSegmentTimeMapping = this.calculateSegmentTimeMapping_(segmentInfo, segmentInfo.timingInfo, shouldSaveTimelineMapping);\n const segment = segmentInfo.segment;\n if (didCalculateSegmentTimeMapping) {\n this.saveDiscontinuitySyncInfo_(segmentInfo); // If the playlist does not have sync information yet, record that information\n // now with segment timing information\n\n if (!segmentInfo.playlist.syncInfo) {\n segmentInfo.playlist.syncInfo = {\n mediaSequence: segmentInfo.playlist.mediaSequence + segmentInfo.mediaIndex,\n time: segment.start\n };\n }\n }\n const dateTime = segment.dateTimeObject;\n if (segment.discontinuity && shouldSaveTimelineMapping && dateTime) {\n this.timelineToDatetimeMappings[segment.timeline] = -(dateTime.getTime() / 1000);\n }\n }\n timestampOffsetForTimeline(timeline) {\n if (typeof this.timelines[timeline] === 'undefined') {\n return null;\n }\n return this.timelines[timeline].time;\n }\n mappingForTimeline(timeline) {\n if (typeof this.timelines[timeline] === 'undefined') {\n return null;\n }\n return this.timelines[timeline].mapping;\n }\n /**\n * Use the \"media time\" for a segment to generate a mapping to \"display time\" and\n * save that display time to the segment.\n *\n * @private\n * @param {SegmentInfo} segmentInfo\n * The current active request information\n * @param {Object} timingInfo\n * The start and end time of the current segment in \"media time\"\n * @param {boolean} shouldSaveTimelineMapping\n * If there's a timeline change, determines if the timeline mapping should be\n * saved in timelines.\n * @return {boolean}\n * Returns false if segment time mapping could not be calculated\n */\n\n calculateSegmentTimeMapping_(segmentInfo, timingInfo, shouldSaveTimelineMapping) {\n // TODO: remove side effects\n const segment = segmentInfo.segment;\n const part = segmentInfo.part;\n let mappingObj = this.timelines[segmentInfo.timeline];\n let start;\n let end;\n if (typeof segmentInfo.timestampOffset === 'number') {\n mappingObj = {\n time: segmentInfo.startOfSegment,\n mapping: segmentInfo.startOfSegment - timingInfo.start\n };\n if (shouldSaveTimelineMapping) {\n this.timelines[segmentInfo.timeline] = mappingObj;\n this.trigger('timestampoffset');\n this.logger_(`time mapping for timeline ${segmentInfo.timeline}: ` + `[time: ${mappingObj.time}] [mapping: ${mappingObj.mapping}]`);\n }\n start = segmentInfo.startOfSegment;\n end = timingInfo.end + mappingObj.mapping;\n } else if (mappingObj) {\n start = timingInfo.start + mappingObj.mapping;\n end = timingInfo.end + mappingObj.mapping;\n } else {\n return false;\n }\n if (part) {\n part.start = start;\n part.end = end;\n } // If we don't have a segment start yet or the start value we got\n // is less than our current segment.start value, save a new start value.\n // We have to do this because parts will have segment timing info saved\n // multiple times and we want segment start to be the earliest part start\n // value for that segment.\n\n if (!segment.start || start < segment.start) {\n segment.start = start;\n }\n segment.end = end;\n return true;\n }\n /**\n * Each time we have discontinuity in the playlist, attempt to calculate the location\n * in display of the start of the discontinuity and save that. We also save an accuracy\n * value so that we save values with the most accuracy (closest to 0.)\n *\n * @private\n * @param {SegmentInfo} segmentInfo - The current active request information\n */\n\n saveDiscontinuitySyncInfo_(segmentInfo) {\n const playlist = segmentInfo.playlist;\n const segment = segmentInfo.segment; // If the current segment is a discontinuity then we know exactly where\n // the start of the range and it's accuracy is 0 (greater accuracy values\n // mean more approximation)\n\n if (segment.discontinuity) {\n this.discontinuities[segment.timeline] = {\n time: segment.start,\n accuracy: 0\n };\n } else if (playlist.discontinuityStarts && playlist.discontinuityStarts.length) {\n // Search for future discontinuities that we can provide better timing\n // information for and save that information for sync purposes\n for (let i = 0; i < playlist.discontinuityStarts.length; i++) {\n const segmentIndex = playlist.discontinuityStarts[i];\n const discontinuity = playlist.discontinuitySequence + i + 1;\n const mediaIndexDiff = segmentIndex - segmentInfo.mediaIndex;\n const accuracy = Math.abs(mediaIndexDiff);\n if (!this.discontinuities[discontinuity] || this.discontinuities[discontinuity].accuracy > accuracy) {\n let time;\n if (mediaIndexDiff < 0) {\n time = segment.start - sumDurations({\n defaultDuration: playlist.targetDuration,\n durationList: playlist.segments,\n startIndex: segmentInfo.mediaIndex,\n endIndex: segmentIndex\n });\n } else {\n time = segment.end + sumDurations({\n defaultDuration: playlist.targetDuration,\n durationList: playlist.segments,\n startIndex: segmentInfo.mediaIndex + 1,\n endIndex: segmentIndex\n });\n }\n this.discontinuities[discontinuity] = {\n time,\n accuracy\n };\n }\n }\n }\n }\n dispose() {\n this.trigger('dispose');\n this.off();\n }\n}\n\n/**\n * The TimelineChangeController acts as a source for segment loaders to listen for and\n * keep track of latest and pending timeline changes. This is useful to ensure proper\n * sync, as each loader may need to make a consideration for what timeline the other\n * loader is on before making changes which could impact the other loader's media.\n *\n * @class TimelineChangeController\n * @extends videojs.EventTarget\n */\n\nclass TimelineChangeController extends videojs.EventTarget {\n constructor() {\n super();\n this.pendingTimelineChanges_ = {};\n this.lastTimelineChanges_ = {};\n }\n clearPendingTimelineChange(type) {\n this.pendingTimelineChanges_[type] = null;\n this.trigger('pendingtimelinechange');\n }\n pendingTimelineChange({\n type,\n from,\n to\n }) {\n if (typeof from === 'number' && typeof to === 'number') {\n this.pendingTimelineChanges_[type] = {\n type,\n from,\n to\n };\n this.trigger('pendingtimelinechange');\n }\n return this.pendingTimelineChanges_[type];\n }\n lastTimelineChange({\n type,\n from,\n to\n }) {\n if (typeof from === 'number' && typeof to === 'number') {\n this.lastTimelineChanges_[type] = {\n type,\n from,\n to\n };\n delete this.pendingTimelineChanges_[type];\n this.trigger('timelinechange');\n }\n return this.lastTimelineChanges_[type];\n }\n dispose() {\n this.trigger('dispose');\n this.pendingTimelineChanges_ = {};\n this.lastTimelineChanges_ = {};\n this.off();\n }\n}\n\n/* rollup-plugin-worker-factory start for worker!/home/runner/work/http-streaming/http-streaming/src/decrypter-worker.js */\nconst workerCode = transform(getWorkerString(function () {\n /**\n * @file stream.js\n */\n\n /**\n * A lightweight readable stream implemention that handles event dispatching.\n *\n * @class Stream\n */\n\n var Stream = /*#__PURE__*/function () {\n function Stream() {\n this.listeners = {};\n }\n /**\n * Add a listener for a specified event type.\n *\n * @param {string} type the event name\n * @param {Function} listener the callback to be invoked when an event of\n * the specified type occurs\n */\n\n var _proto = Stream.prototype;\n _proto.on = function on(type, listener) {\n if (!this.listeners[type]) {\n this.listeners[type] = [];\n }\n this.listeners[type].push(listener);\n }\n /**\n * Remove a listener for a specified event type.\n *\n * @param {string} type the event name\n * @param {Function} listener a function previously registered for this\n * type of event through `on`\n * @return {boolean} if we could turn it off or not\n */;\n\n _proto.off = function off(type, listener) {\n if (!this.listeners[type]) {\n return false;\n }\n var index = this.listeners[type].indexOf(listener); // TODO: which is better?\n // In Video.js we slice listener functions\n // on trigger so that it does not mess up the order\n // while we loop through.\n //\n // Here we slice on off so that the loop in trigger\n // can continue using it's old reference to loop without\n // messing up the order.\n\n this.listeners[type] = this.listeners[type].slice(0);\n this.listeners[type].splice(index, 1);\n return index > -1;\n }\n /**\n * Trigger an event of the specified type on this stream. Any additional\n * arguments to this function are passed as parameters to event listeners.\n *\n * @param {string} type the event name\n */;\n\n _proto.trigger = function trigger(type) {\n var callbacks = this.listeners[type];\n if (!callbacks) {\n return;\n } // Slicing the arguments on every invocation of this method\n // can add a significant amount of overhead. Avoid the\n // intermediate object creation for the common case of a\n // single callback argument\n\n if (arguments.length === 2) {\n var length = callbacks.length;\n for (var i = 0; i < length; ++i) {\n callbacks[i].call(this, arguments[1]);\n }\n } else {\n var args = Array.prototype.slice.call(arguments, 1);\n var _length = callbacks.length;\n for (var _i = 0; _i < _length; ++_i) {\n callbacks[_i].apply(this, args);\n }\n }\n }\n /**\n * Destroys the stream and cleans up.\n */;\n\n _proto.dispose = function dispose() {\n this.listeners = {};\n }\n /**\n * Forwards all `data` events on this stream to the destination stream. The\n * destination stream should provide a method `push` to receive the data\n * events as they arrive.\n *\n * @param {Stream} destination the stream that will receive all `data` events\n * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options\n */;\n\n _proto.pipe = function pipe(destination) {\n this.on('data', function (data) {\n destination.push(data);\n });\n };\n return Stream;\n }();\n /*! @name pkcs7 @version 1.0.4 @license Apache-2.0 */\n\n /**\n * Returns the subarray of a Uint8Array without PKCS#7 padding.\n *\n * @param padded {Uint8Array} unencrypted bytes that have been padded\n * @return {Uint8Array} the unpadded bytes\n * @see http://tools.ietf.org/html/rfc5652\n */\n\n function unpad(padded) {\n return padded.subarray(0, padded.byteLength - padded[padded.byteLength - 1]);\n }\n /*! @name aes-decrypter @version 4.0.1 @license Apache-2.0 */\n\n /**\n * @file aes.js\n *\n * This file contains an adaptation of the AES decryption algorithm\n * from the Standford Javascript Cryptography Library. That work is\n * covered by the following copyright and permissions notice:\n *\n * Copyright 2009-2010 Emily Stark, Mike Hamburg, Dan Boneh.\n * All rights reserved.\n *\n * Redistribution and use in source and binary forms, with or without\n * modification, are permitted provided that the following conditions are\n * met:\n *\n * 1. Redistributions of source code must retain the above copyright\n * notice, this list of conditions and the following disclaimer.\n *\n * 2. Redistributions in binary form must reproduce the above\n * copyright notice, this list of conditions and the following\n * disclaimer in the documentation and/or other materials provided\n * with the distribution.\n *\n * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR\n * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\n * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE\n * DISCLAIMED. IN NO EVENT SHALL OR CONTRIBUTORS BE\n * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR\n * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF\n * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR\n * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,\n * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE\n * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN\n * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n *\n * The views and conclusions contained in the software and documentation\n * are those of the authors and should not be interpreted as representing\n * official policies, either expressed or implied, of the authors.\n */\n\n /**\n * Expand the S-box tables.\n *\n * @private\n */\n\n const precompute = function () {\n const tables = [[[], [], [], [], []], [[], [], [], [], []]];\n const encTable = tables[0];\n const decTable = tables[1];\n const sbox = encTable[4];\n const sboxInv = decTable[4];\n let i;\n let x;\n let xInv;\n const d = [];\n const th = [];\n let x2;\n let x4;\n let x8;\n let s;\n let tEnc;\n let tDec; // Compute double and third tables\n\n for (i = 0; i < 256; i++) {\n th[(d[i] = i << 1 ^ (i >> 7) * 283) ^ i] = i;\n }\n for (x = xInv = 0; !sbox[x]; x ^= x2 || 1, xInv = th[xInv] || 1) {\n // Compute sbox\n s = xInv ^ xInv << 1 ^ xInv << 2 ^ xInv << 3 ^ xInv << 4;\n s = s >> 8 ^ s & 255 ^ 99;\n sbox[x] = s;\n sboxInv[s] = x; // Compute MixColumns\n\n x8 = d[x4 = d[x2 = d[x]]];\n tDec = x8 * 0x1010101 ^ x4 * 0x10001 ^ x2 * 0x101 ^ x * 0x1010100;\n tEnc = d[s] * 0x101 ^ s * 0x1010100;\n for (i = 0; i < 4; i++) {\n encTable[i][x] = tEnc = tEnc << 24 ^ tEnc >>> 8;\n decTable[i][s] = tDec = tDec << 24 ^ tDec >>> 8;\n }\n } // Compactify. Considerable speedup on Firefox.\n\n for (i = 0; i < 5; i++) {\n encTable[i] = encTable[i].slice(0);\n decTable[i] = decTable[i].slice(0);\n }\n return tables;\n };\n let aesTables = null;\n /**\n * Schedule out an AES key for both encryption and decryption. This\n * is a low-level class. Use a cipher mode to do bulk encryption.\n *\n * @class AES\n * @param key {Array} The key as an array of 4, 6 or 8 words.\n */\n\n class AES {\n constructor(key) {\n /**\n * The expanded S-box and inverse S-box tables. These will be computed\n * on the client so that we don't have to send them down the wire.\n *\n * There are two tables, _tables[0] is for encryption and\n * _tables[1] is for decryption.\n *\n * The first 4 sub-tables are the expanded S-box with MixColumns. The\n * last (_tables[01][4]) is the S-box itself.\n *\n * @private\n */\n // if we have yet to precompute the S-box tables\n // do so now\n if (!aesTables) {\n aesTables = precompute();\n } // then make a copy of that object for use\n\n this._tables = [[aesTables[0][0].slice(), aesTables[0][1].slice(), aesTables[0][2].slice(), aesTables[0][3].slice(), aesTables[0][4].slice()], [aesTables[1][0].slice(), aesTables[1][1].slice(), aesTables[1][2].slice(), aesTables[1][3].slice(), aesTables[1][4].slice()]];\n let i;\n let j;\n let tmp;\n const sbox = this._tables[0][4];\n const decTable = this._tables[1];\n const keyLen = key.length;\n let rcon = 1;\n if (keyLen !== 4 && keyLen !== 6 && keyLen !== 8) {\n throw new Error('Invalid aes key size');\n }\n const encKey = key.slice(0);\n const decKey = [];\n this._key = [encKey, decKey]; // schedule encryption keys\n\n for (i = keyLen; i < 4 * keyLen + 28; i++) {\n tmp = encKey[i - 1]; // apply sbox\n\n if (i % keyLen === 0 || keyLen === 8 && i % keyLen === 4) {\n tmp = sbox[tmp >>> 24] << 24 ^ sbox[tmp >> 16 & 255] << 16 ^ sbox[tmp >> 8 & 255] << 8 ^ sbox[tmp & 255]; // shift rows and add rcon\n\n if (i % keyLen === 0) {\n tmp = tmp << 8 ^ tmp >>> 24 ^ rcon << 24;\n rcon = rcon << 1 ^ (rcon >> 7) * 283;\n }\n }\n encKey[i] = encKey[i - keyLen] ^ tmp;\n } // schedule decryption keys\n\n for (j = 0; i; j++, i--) {\n tmp = encKey[j & 3 ? i : i - 4];\n if (i <= 4 || j < 4) {\n decKey[j] = tmp;\n } else {\n decKey[j] = decTable[0][sbox[tmp >>> 24]] ^ decTable[1][sbox[tmp >> 16 & 255]] ^ decTable[2][sbox[tmp >> 8 & 255]] ^ decTable[3][sbox[tmp & 255]];\n }\n }\n }\n /**\n * Decrypt 16 bytes, specified as four 32-bit words.\n *\n * @param {number} encrypted0 the first word to decrypt\n * @param {number} encrypted1 the second word to decrypt\n * @param {number} encrypted2 the third word to decrypt\n * @param {number} encrypted3 the fourth word to decrypt\n * @param {Int32Array} out the array to write the decrypted words\n * into\n * @param {number} offset the offset into the output array to start\n * writing results\n * @return {Array} The plaintext.\n */\n\n decrypt(encrypted0, encrypted1, encrypted2, encrypted3, out, offset) {\n const key = this._key[1]; // state variables a,b,c,d are loaded with pre-whitened data\n\n let a = encrypted0 ^ key[0];\n let b = encrypted3 ^ key[1];\n let c = encrypted2 ^ key[2];\n let d = encrypted1 ^ key[3];\n let a2;\n let b2;\n let c2; // key.length === 2 ?\n\n const nInnerRounds = key.length / 4 - 2;\n let i;\n let kIndex = 4;\n const table = this._tables[1]; // load up the tables\n\n const table0 = table[0];\n const table1 = table[1];\n const table2 = table[2];\n const table3 = table[3];\n const sbox = table[4]; // Inner rounds. Cribbed from OpenSSL.\n\n for (i = 0; i < nInnerRounds; i++) {\n a2 = table0[a >>> 24] ^ table1[b >> 16 & 255] ^ table2[c >> 8 & 255] ^ table3[d & 255] ^ key[kIndex];\n b2 = table0[b >>> 24] ^ table1[c >> 16 & 255] ^ table2[d >> 8 & 255] ^ table3[a & 255] ^ key[kIndex + 1];\n c2 = table0[c >>> 24] ^ table1[d >> 16 & 255] ^ table2[a >> 8 & 255] ^ table3[b & 255] ^ key[kIndex + 2];\n d = table0[d >>> 24] ^ table1[a >> 16 & 255] ^ table2[b >> 8 & 255] ^ table3[c & 255] ^ key[kIndex + 3];\n kIndex += 4;\n a = a2;\n b = b2;\n c = c2;\n } // Last round.\n\n for (i = 0; i < 4; i++) {\n out[(3 & -i) + offset] = sbox[a >>> 24] << 24 ^ sbox[b >> 16 & 255] << 16 ^ sbox[c >> 8 & 255] << 8 ^ sbox[d & 255] ^ key[kIndex++];\n a2 = a;\n a = b;\n b = c;\n c = d;\n d = a2;\n }\n }\n }\n /**\n * @file async-stream.js\n */\n\n /**\n * A wrapper around the Stream class to use setTimeout\n * and run stream \"jobs\" Asynchronously\n *\n * @class AsyncStream\n * @extends Stream\n */\n\n class AsyncStream extends Stream {\n constructor() {\n super(Stream);\n this.jobs = [];\n this.delay = 1;\n this.timeout_ = null;\n }\n /**\n * process an async job\n *\n * @private\n */\n\n processJob_() {\n this.jobs.shift()();\n if (this.jobs.length) {\n this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay);\n } else {\n this.timeout_ = null;\n }\n }\n /**\n * push a job into the stream\n *\n * @param {Function} job the job to push into the stream\n */\n\n push(job) {\n this.jobs.push(job);\n if (!this.timeout_) {\n this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay);\n }\n }\n }\n /**\n * @file decrypter.js\n *\n * An asynchronous implementation of AES-128 CBC decryption with\n * PKCS#7 padding.\n */\n\n /**\n * Convert network-order (big-endian) bytes into their little-endian\n * representation.\n */\n\n const ntoh = function (word) {\n return word << 24 | (word & 0xff00) << 8 | (word & 0xff0000) >> 8 | word >>> 24;\n };\n /**\n * Decrypt bytes using AES-128 with CBC and PKCS#7 padding.\n *\n * @param {Uint8Array} encrypted the encrypted bytes\n * @param {Uint32Array} key the bytes of the decryption key\n * @param {Uint32Array} initVector the initialization vector (IV) to\n * use for the first round of CBC.\n * @return {Uint8Array} the decrypted bytes\n *\n * @see http://en.wikipedia.org/wiki/Advanced_Encryption_Standard\n * @see http://en.wikipedia.org/wiki/Block_cipher_mode_of_operation#Cipher_Block_Chaining_.28CBC.29\n * @see https://tools.ietf.org/html/rfc2315\n */\n\n const decrypt = function (encrypted, key, initVector) {\n // word-level access to the encrypted bytes\n const encrypted32 = new Int32Array(encrypted.buffer, encrypted.byteOffset, encrypted.byteLength >> 2);\n const decipher = new AES(Array.prototype.slice.call(key)); // byte and word-level access for the decrypted output\n\n const decrypted = new Uint8Array(encrypted.byteLength);\n const decrypted32 = new Int32Array(decrypted.buffer); // temporary variables for working with the IV, encrypted, and\n // decrypted data\n\n let init0;\n let init1;\n let init2;\n let init3;\n let encrypted0;\n let encrypted1;\n let encrypted2;\n let encrypted3; // iteration variable\n\n let wordIx; // pull out the words of the IV to ensure we don't modify the\n // passed-in reference and easier access\n\n init0 = initVector[0];\n init1 = initVector[1];\n init2 = initVector[2];\n init3 = initVector[3]; // decrypt four word sequences, applying cipher-block chaining (CBC)\n // to each decrypted block\n\n for (wordIx = 0; wordIx < encrypted32.length; wordIx += 4) {\n // convert big-endian (network order) words into little-endian\n // (javascript order)\n encrypted0 = ntoh(encrypted32[wordIx]);\n encrypted1 = ntoh(encrypted32[wordIx + 1]);\n encrypted2 = ntoh(encrypted32[wordIx + 2]);\n encrypted3 = ntoh(encrypted32[wordIx + 3]); // decrypt the block\n\n decipher.decrypt(encrypted0, encrypted1, encrypted2, encrypted3, decrypted32, wordIx); // XOR with the IV, and restore network byte-order to obtain the\n // plaintext\n\n decrypted32[wordIx] = ntoh(decrypted32[wordIx] ^ init0);\n decrypted32[wordIx + 1] = ntoh(decrypted32[wordIx + 1] ^ init1);\n decrypted32[wordIx + 2] = ntoh(decrypted32[wordIx + 2] ^ init2);\n decrypted32[wordIx + 3] = ntoh(decrypted32[wordIx + 3] ^ init3); // setup the IV for the next round\n\n init0 = encrypted0;\n init1 = encrypted1;\n init2 = encrypted2;\n init3 = encrypted3;\n }\n return decrypted;\n };\n /**\n * The `Decrypter` class that manages decryption of AES\n * data through `AsyncStream` objects and the `decrypt`\n * function\n *\n * @param {Uint8Array} encrypted the encrypted bytes\n * @param {Uint32Array} key the bytes of the decryption key\n * @param {Uint32Array} initVector the initialization vector (IV) to\n * @param {Function} done the function to run when done\n * @class Decrypter\n */\n\n class Decrypter {\n constructor(encrypted, key, initVector, done) {\n const step = Decrypter.STEP;\n const encrypted32 = new Int32Array(encrypted.buffer);\n const decrypted = new Uint8Array(encrypted.byteLength);\n let i = 0;\n this.asyncStream_ = new AsyncStream(); // split up the encryption job and do the individual chunks asynchronously\n\n this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i, i + step), key, initVector, decrypted));\n for (i = step; i < encrypted32.length; i += step) {\n initVector = new Uint32Array([ntoh(encrypted32[i - 4]), ntoh(encrypted32[i - 3]), ntoh(encrypted32[i - 2]), ntoh(encrypted32[i - 1])]);\n this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i, i + step), key, initVector, decrypted));\n } // invoke the done() callback when everything is finished\n\n this.asyncStream_.push(function () {\n // remove pkcs#7 padding from the decrypted bytes\n done(null, unpad(decrypted));\n });\n }\n /**\n * a getter for step the maximum number of bytes to process at one time\n *\n * @return {number} the value of step 32000\n */\n\n static get STEP() {\n // 4 * 8000;\n return 32000;\n }\n /**\n * @private\n */\n\n decryptChunk_(encrypted, key, initVector, decrypted) {\n return function () {\n const bytes = decrypt(encrypted, key, initVector);\n decrypted.set(bytes, encrypted.byteOffset);\n };\n }\n }\n var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};\n var win;\n if (typeof window !== \"undefined\") {\n win = window;\n } else if (typeof commonjsGlobal !== \"undefined\") {\n win = commonjsGlobal;\n } else if (typeof self !== \"undefined\") {\n win = self;\n } else {\n win = {};\n }\n var window_1 = win;\n var isArrayBufferView = function isArrayBufferView(obj) {\n if (ArrayBuffer.isView === 'function') {\n return ArrayBuffer.isView(obj);\n }\n return obj && obj.buffer instanceof ArrayBuffer;\n };\n var BigInt = window_1.BigInt || Number;\n [BigInt('0x1'), BigInt('0x100'), BigInt('0x10000'), BigInt('0x1000000'), BigInt('0x100000000'), BigInt('0x10000000000'), BigInt('0x1000000000000'), BigInt('0x100000000000000'), BigInt('0x10000000000000000')];\n (function () {\n var a = new Uint16Array([0xFFCC]);\n var b = new Uint8Array(a.buffer, a.byteOffset, a.byteLength);\n if (b[0] === 0xFF) {\n return 'big';\n }\n if (b[0] === 0xCC) {\n return 'little';\n }\n return 'unknown';\n })();\n /**\n * Creates an object for sending to a web worker modifying properties that are TypedArrays\n * into a new object with seperated properties for the buffer, byteOffset, and byteLength.\n *\n * @param {Object} message\n * Object of properties and values to send to the web worker\n * @return {Object}\n * Modified message with TypedArray values expanded\n * @function createTransferableMessage\n */\n\n const createTransferableMessage = function (message) {\n const transferable = {};\n Object.keys(message).forEach(key => {\n const value = message[key];\n if (isArrayBufferView(value)) {\n transferable[key] = {\n bytes: value.buffer,\n byteOffset: value.byteOffset,\n byteLength: value.byteLength\n };\n } else {\n transferable[key] = value;\n }\n });\n return transferable;\n };\n /* global self */\n\n /**\n * Our web worker interface so that things can talk to aes-decrypter\n * that will be running in a web worker. the scope is passed to this by\n * webworkify.\n */\n\n self.onmessage = function (event) {\n const data = event.data;\n const encrypted = new Uint8Array(data.encrypted.bytes, data.encrypted.byteOffset, data.encrypted.byteLength);\n const key = new Uint32Array(data.key.bytes, data.key.byteOffset, data.key.byteLength / 4);\n const iv = new Uint32Array(data.iv.bytes, data.iv.byteOffset, data.iv.byteLength / 4);\n /* eslint-disable no-new, handle-callback-err */\n\n new Decrypter(encrypted, key, iv, function (err, bytes) {\n self.postMessage(createTransferableMessage({\n source: data.source,\n decrypted: bytes\n }), [bytes.buffer]);\n });\n /* eslint-enable */\n };\n}));\n\nvar Decrypter = factory(workerCode);\n/* rollup-plugin-worker-factory end for worker!/home/runner/work/http-streaming/http-streaming/src/decrypter-worker.js */\n\n/**\n * Convert the properties of an HLS track into an audioTrackKind.\n *\n * @private\n */\n\nconst audioTrackKind_ = properties => {\n let kind = properties.default ? 'main' : 'alternative';\n if (properties.characteristics && properties.characteristics.indexOf('public.accessibility.describes-video') >= 0) {\n kind = 'main-desc';\n }\n return kind;\n};\n/**\n * Pause provided segment loader and playlist loader if active\n *\n * @param {SegmentLoader} segmentLoader\n * SegmentLoader to pause\n * @param {Object} mediaType\n * Active media type\n * @function stopLoaders\n */\n\nconst stopLoaders = (segmentLoader, mediaType) => {\n segmentLoader.abort();\n segmentLoader.pause();\n if (mediaType && mediaType.activePlaylistLoader) {\n mediaType.activePlaylistLoader.pause();\n mediaType.activePlaylistLoader = null;\n }\n};\n/**\n * Start loading provided segment loader and playlist loader\n *\n * @param {PlaylistLoader} playlistLoader\n * PlaylistLoader to start loading\n * @param {Object} mediaType\n * Active media type\n * @function startLoaders\n */\n\nconst startLoaders = (playlistLoader, mediaType) => {\n // Segment loader will be started after `loadedmetadata` or `loadedplaylist` from the\n // playlist loader\n mediaType.activePlaylistLoader = playlistLoader;\n playlistLoader.load();\n};\n/**\n * Returns a function to be called when the media group changes. It performs a\n * non-destructive (preserve the buffer) resync of the SegmentLoader. This is because a\n * change of group is merely a rendition switch of the same content at another encoding,\n * rather than a change of content, such as switching audio from English to Spanish.\n *\n * @param {string} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @return {Function}\n * Handler for a non-destructive resync of SegmentLoader when the active media\n * group changes.\n * @function onGroupChanged\n */\n\nconst onGroupChanged = (type, settings) => () => {\n const {\n segmentLoaders: {\n [type]: segmentLoader,\n main: mainSegmentLoader\n },\n mediaTypes: {\n [type]: mediaType\n }\n } = settings;\n const activeTrack = mediaType.activeTrack();\n const activeGroup = mediaType.getActiveGroup();\n const previousActiveLoader = mediaType.activePlaylistLoader;\n const lastGroup = mediaType.lastGroup_; // the group did not change do nothing\n\n if (activeGroup && lastGroup && activeGroup.id === lastGroup.id) {\n return;\n }\n mediaType.lastGroup_ = activeGroup;\n mediaType.lastTrack_ = activeTrack;\n stopLoaders(segmentLoader, mediaType);\n if (!activeGroup || activeGroup.isMainPlaylist) {\n // there is no group active or active group is a main playlist and won't change\n return;\n }\n if (!activeGroup.playlistLoader) {\n if (previousActiveLoader) {\n // The previous group had a playlist loader but the new active group does not\n // this means we are switching from demuxed to muxed audio. In this case we want to\n // do a destructive reset of the main segment loader and not restart the audio\n // loaders.\n mainSegmentLoader.resetEverything();\n }\n return;\n } // Non-destructive resync\n\n segmentLoader.resyncLoader();\n startLoaders(activeGroup.playlistLoader, mediaType);\n};\nconst onGroupChanging = (type, settings) => () => {\n const {\n segmentLoaders: {\n [type]: segmentLoader\n },\n mediaTypes: {\n [type]: mediaType\n }\n } = settings;\n mediaType.lastGroup_ = null;\n segmentLoader.abort();\n segmentLoader.pause();\n};\n/**\n * Returns a function to be called when the media track changes. It performs a\n * destructive reset of the SegmentLoader to ensure we start loading as close to\n * currentTime as possible.\n *\n * @param {string} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @return {Function}\n * Handler for a destructive reset of SegmentLoader when the active media\n * track changes.\n * @function onTrackChanged\n */\n\nconst onTrackChanged = (type, settings) => () => {\n const {\n mainPlaylistLoader,\n segmentLoaders: {\n [type]: segmentLoader,\n main: mainSegmentLoader\n },\n mediaTypes: {\n [type]: mediaType\n }\n } = settings;\n const activeTrack = mediaType.activeTrack();\n const activeGroup = mediaType.getActiveGroup();\n const previousActiveLoader = mediaType.activePlaylistLoader;\n const lastTrack = mediaType.lastTrack_; // track did not change, do nothing\n\n if (lastTrack && activeTrack && lastTrack.id === activeTrack.id) {\n return;\n }\n mediaType.lastGroup_ = activeGroup;\n mediaType.lastTrack_ = activeTrack;\n stopLoaders(segmentLoader, mediaType);\n if (!activeGroup) {\n // there is no group active so we do not want to restart loaders\n return;\n }\n if (activeGroup.isMainPlaylist) {\n // track did not change, do nothing\n if (!activeTrack || !lastTrack || activeTrack.id === lastTrack.id) {\n return;\n }\n const pc = settings.vhs.playlistController_;\n const newPlaylist = pc.selectPlaylist(); // media will not change do nothing\n\n if (pc.media() === newPlaylist) {\n return;\n }\n mediaType.logger_(`track change. Switching main audio from ${lastTrack.id} to ${activeTrack.id}`);\n mainPlaylistLoader.pause();\n mainSegmentLoader.resetEverything();\n pc.fastQualityChange_(newPlaylist);\n return;\n }\n if (type === 'AUDIO') {\n if (!activeGroup.playlistLoader) {\n // when switching from demuxed audio/video to muxed audio/video (noted by no\n // playlist loader for the audio group), we want to do a destructive reset of the\n // main segment loader and not restart the audio loaders\n mainSegmentLoader.setAudio(true); // don't have to worry about disabling the audio of the audio segment loader since\n // it should be stopped\n\n mainSegmentLoader.resetEverything();\n return;\n } // although the segment loader is an audio segment loader, call the setAudio\n // function to ensure it is prepared to re-append the init segment (or handle other\n // config changes)\n\n segmentLoader.setAudio(true);\n mainSegmentLoader.setAudio(false);\n }\n if (previousActiveLoader === activeGroup.playlistLoader) {\n // Nothing has actually changed. This can happen because track change events can fire\n // multiple times for a \"single\" change. One for enabling the new active track, and\n // one for disabling the track that was active\n startLoaders(activeGroup.playlistLoader, mediaType);\n return;\n }\n if (segmentLoader.track) {\n // For WebVTT, set the new text track in the segmentloader\n segmentLoader.track(activeTrack);\n } // destructive reset\n\n segmentLoader.resetEverything();\n startLoaders(activeGroup.playlistLoader, mediaType);\n};\nconst onError = {\n /**\n * Returns a function to be called when a SegmentLoader or PlaylistLoader encounters\n * an error.\n *\n * @param {string} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @return {Function}\n * Error handler. Logs warning (or error if the playlist is excluded) to\n * console and switches back to default audio track.\n * @function onError.AUDIO\n */\n AUDIO: (type, settings) => () => {\n const {\n mediaTypes: {\n [type]: mediaType\n },\n excludePlaylist\n } = settings; // switch back to default audio track\n\n const activeTrack = mediaType.activeTrack();\n const activeGroup = mediaType.activeGroup();\n const id = (activeGroup.filter(group => group.default)[0] || activeGroup[0]).id;\n const defaultTrack = mediaType.tracks[id];\n if (activeTrack === defaultTrack) {\n // Default track encountered an error. All we can do now is exclude the current\n // rendition and hope another will switch audio groups\n excludePlaylist({\n error: {\n message: 'Problem encountered loading the default audio track.'\n }\n });\n return;\n }\n videojs.log.warn('Problem encountered loading the alternate audio track.' + 'Switching back to default.');\n for (const trackId in mediaType.tracks) {\n mediaType.tracks[trackId].enabled = mediaType.tracks[trackId] === defaultTrack;\n }\n mediaType.onTrackChanged();\n },\n /**\n * Returns a function to be called when a SegmentLoader or PlaylistLoader encounters\n * an error.\n *\n * @param {string} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @return {Function}\n * Error handler. Logs warning to console and disables the active subtitle track\n * @function onError.SUBTITLES\n */\n SUBTITLES: (type, settings) => () => {\n const {\n mediaTypes: {\n [type]: mediaType\n }\n } = settings;\n videojs.log.warn('Problem encountered loading the subtitle track.' + 'Disabling subtitle track.');\n const track = mediaType.activeTrack();\n if (track) {\n track.mode = 'disabled';\n }\n mediaType.onTrackChanged();\n }\n};\nconst setupListeners = {\n /**\n * Setup event listeners for audio playlist loader\n *\n * @param {string} type\n * MediaGroup type\n * @param {PlaylistLoader|null} playlistLoader\n * PlaylistLoader to register listeners on\n * @param {Object} settings\n * Object containing required information for media groups\n * @function setupListeners.AUDIO\n */\n AUDIO: (type, playlistLoader, settings) => {\n if (!playlistLoader) {\n // no playlist loader means audio will be muxed with the video\n return;\n }\n const {\n tech,\n requestOptions,\n segmentLoaders: {\n [type]: segmentLoader\n }\n } = settings;\n playlistLoader.on('loadedmetadata', () => {\n const media = playlistLoader.media();\n segmentLoader.playlist(media, requestOptions); // if the video is already playing, or if this isn't a live video and preload\n // permits, start downloading segments\n\n if (!tech.paused() || media.endList && tech.preload() !== 'none') {\n segmentLoader.load();\n }\n });\n playlistLoader.on('loadedplaylist', () => {\n segmentLoader.playlist(playlistLoader.media(), requestOptions); // If the player isn't paused, ensure that the segment loader is running\n\n if (!tech.paused()) {\n segmentLoader.load();\n }\n });\n playlistLoader.on('error', onError[type](type, settings));\n },\n /**\n * Setup event listeners for subtitle playlist loader\n *\n * @param {string} type\n * MediaGroup type\n * @param {PlaylistLoader|null} playlistLoader\n * PlaylistLoader to register listeners on\n * @param {Object} settings\n * Object containing required information for media groups\n * @function setupListeners.SUBTITLES\n */\n SUBTITLES: (type, playlistLoader, settings) => {\n const {\n tech,\n requestOptions,\n segmentLoaders: {\n [type]: segmentLoader\n },\n mediaTypes: {\n [type]: mediaType\n }\n } = settings;\n playlistLoader.on('loadedmetadata', () => {\n const media = playlistLoader.media();\n segmentLoader.playlist(media, requestOptions);\n segmentLoader.track(mediaType.activeTrack()); // if the video is already playing, or if this isn't a live video and preload\n // permits, start downloading segments\n\n if (!tech.paused() || media.endList && tech.preload() !== 'none') {\n segmentLoader.load();\n }\n });\n playlistLoader.on('loadedplaylist', () => {\n segmentLoader.playlist(playlistLoader.media(), requestOptions); // If the player isn't paused, ensure that the segment loader is running\n\n if (!tech.paused()) {\n segmentLoader.load();\n }\n });\n playlistLoader.on('error', onError[type](type, settings));\n }\n};\nconst initialize = {\n /**\n * Setup PlaylistLoaders and AudioTracks for the audio groups\n *\n * @param {string} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @function initialize.AUDIO\n */\n 'AUDIO': (type, settings) => {\n const {\n vhs,\n sourceType,\n segmentLoaders: {\n [type]: segmentLoader\n },\n requestOptions,\n main: {\n mediaGroups\n },\n mediaTypes: {\n [type]: {\n groups,\n tracks,\n logger_\n }\n },\n mainPlaylistLoader\n } = settings;\n const audioOnlyMain = isAudioOnly(mainPlaylistLoader.main); // force a default if we have none\n\n if (!mediaGroups[type] || Object.keys(mediaGroups[type]).length === 0) {\n mediaGroups[type] = {\n main: {\n default: {\n default: true\n }\n }\n };\n if (audioOnlyMain) {\n mediaGroups[type].main.default.playlists = mainPlaylistLoader.main.playlists;\n }\n }\n for (const groupId in mediaGroups[type]) {\n if (!groups[groupId]) {\n groups[groupId] = [];\n }\n for (const variantLabel in mediaGroups[type][groupId]) {\n let properties = mediaGroups[type][groupId][variantLabel];\n let playlistLoader;\n if (audioOnlyMain) {\n logger_(`AUDIO group '${groupId}' label '${variantLabel}' is a main playlist`);\n properties.isMainPlaylist = true;\n playlistLoader = null; // if vhs-json was provided as the source, and the media playlist was resolved,\n // use the resolved media playlist object\n } else if (sourceType === 'vhs-json' && properties.playlists) {\n playlistLoader = new PlaylistLoader(properties.playlists[0], vhs, requestOptions);\n } else if (properties.resolvedUri) {\n playlistLoader = new PlaylistLoader(properties.resolvedUri, vhs, requestOptions); // TODO: dash isn't the only type with properties.playlists\n // should we even have properties.playlists in this check.\n } else if (properties.playlists && sourceType === 'dash') {\n playlistLoader = new DashPlaylistLoader(properties.playlists[0], vhs, requestOptions, mainPlaylistLoader);\n } else {\n // no resolvedUri means the audio is muxed with the video when using this\n // audio track\n playlistLoader = null;\n }\n properties = merge({\n id: variantLabel,\n playlistLoader\n }, properties);\n setupListeners[type](type, properties.playlistLoader, settings);\n groups[groupId].push(properties);\n if (typeof tracks[variantLabel] === 'undefined') {\n const track = new videojs.AudioTrack({\n id: variantLabel,\n kind: audioTrackKind_(properties),\n enabled: false,\n language: properties.language,\n default: properties.default,\n label: variantLabel\n });\n tracks[variantLabel] = track;\n }\n }\n } // setup single error event handler for the segment loader\n\n segmentLoader.on('error', onError[type](type, settings));\n },\n /**\n * Setup PlaylistLoaders and TextTracks for the subtitle groups\n *\n * @param {string} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @function initialize.SUBTITLES\n */\n 'SUBTITLES': (type, settings) => {\n const {\n tech,\n vhs,\n sourceType,\n segmentLoaders: {\n [type]: segmentLoader\n },\n requestOptions,\n main: {\n mediaGroups\n },\n mediaTypes: {\n [type]: {\n groups,\n tracks\n }\n },\n mainPlaylistLoader\n } = settings;\n for (const groupId in mediaGroups[type]) {\n if (!groups[groupId]) {\n groups[groupId] = [];\n }\n for (const variantLabel in mediaGroups[type][groupId]) {\n if (!vhs.options_.useForcedSubtitles && mediaGroups[type][groupId][variantLabel].forced) {\n // Subtitle playlists with the forced attribute are not selectable in Safari.\n // According to Apple's HLS Authoring Specification:\n // If content has forced subtitles and regular subtitles in a given language,\n // the regular subtitles track in that language MUST contain both the forced\n // subtitles and the regular subtitles for that language.\n // Because of this requirement and that Safari does not add forced subtitles,\n // forced subtitles are skipped here to maintain consistent experience across\n // all platforms\n continue;\n }\n let properties = mediaGroups[type][groupId][variantLabel];\n let playlistLoader;\n if (sourceType === 'hls') {\n playlistLoader = new PlaylistLoader(properties.resolvedUri, vhs, requestOptions);\n } else if (sourceType === 'dash') {\n const playlists = properties.playlists.filter(p => p.excludeUntil !== Infinity);\n if (!playlists.length) {\n return;\n }\n playlistLoader = new DashPlaylistLoader(properties.playlists[0], vhs, requestOptions, mainPlaylistLoader);\n } else if (sourceType === 'vhs-json') {\n playlistLoader = new PlaylistLoader(\n // if the vhs-json object included the media playlist, use the media playlist\n // as provided, otherwise use the resolved URI to load the playlist\n properties.playlists ? properties.playlists[0] : properties.resolvedUri, vhs, requestOptions);\n }\n properties = merge({\n id: variantLabel,\n playlistLoader\n }, properties);\n setupListeners[type](type, properties.playlistLoader, settings);\n groups[groupId].push(properties);\n if (typeof tracks[variantLabel] === 'undefined') {\n const track = tech.addRemoteTextTrack({\n id: variantLabel,\n kind: 'subtitles',\n default: properties.default && properties.autoselect,\n language: properties.language,\n label: variantLabel\n }, false).track;\n tracks[variantLabel] = track;\n }\n }\n } // setup single error event handler for the segment loader\n\n segmentLoader.on('error', onError[type](type, settings));\n },\n /**\n * Setup TextTracks for the closed-caption groups\n *\n * @param {String} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @function initialize['CLOSED-CAPTIONS']\n */\n 'CLOSED-CAPTIONS': (type, settings) => {\n const {\n tech,\n main: {\n mediaGroups\n },\n mediaTypes: {\n [type]: {\n groups,\n tracks\n }\n }\n } = settings;\n for (const groupId in mediaGroups[type]) {\n if (!groups[groupId]) {\n groups[groupId] = [];\n }\n for (const variantLabel in mediaGroups[type][groupId]) {\n const properties = mediaGroups[type][groupId][variantLabel]; // Look for either 608 (CCn) or 708 (SERVICEn) caption services\n\n if (!/^(?:CC|SERVICE)/.test(properties.instreamId)) {\n continue;\n }\n const captionServices = tech.options_.vhs && tech.options_.vhs.captionServices || {};\n let newProps = {\n label: variantLabel,\n language: properties.language,\n instreamId: properties.instreamId,\n default: properties.default && properties.autoselect\n };\n if (captionServices[newProps.instreamId]) {\n newProps = merge(newProps, captionServices[newProps.instreamId]);\n }\n if (newProps.default === undefined) {\n delete newProps.default;\n } // No PlaylistLoader is required for Closed-Captions because the captions are\n // embedded within the video stream\n\n groups[groupId].push(merge({\n id: variantLabel\n }, properties));\n if (typeof tracks[variantLabel] === 'undefined') {\n const track = tech.addRemoteTextTrack({\n id: newProps.instreamId,\n kind: 'captions',\n default: newProps.default,\n language: newProps.language,\n label: newProps.label\n }, false).track;\n tracks[variantLabel] = track;\n }\n }\n }\n }\n};\nconst groupMatch = (list, media) => {\n for (let i = 0; i < list.length; i++) {\n if (playlistMatch(media, list[i])) {\n return true;\n }\n if (list[i].playlists && groupMatch(list[i].playlists, media)) {\n return true;\n }\n }\n return false;\n};\n/**\n * Returns a function used to get the active group of the provided type\n *\n * @param {string} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @return {Function}\n * Function that returns the active media group for the provided type. Takes an\n * optional parameter {TextTrack} track. If no track is provided, a list of all\n * variants in the group, otherwise the variant corresponding to the provided\n * track is returned.\n * @function activeGroup\n */\n\nconst activeGroup = (type, settings) => track => {\n const {\n mainPlaylistLoader,\n mediaTypes: {\n [type]: {\n groups\n }\n }\n } = settings;\n const media = mainPlaylistLoader.media();\n if (!media) {\n return null;\n }\n let variants = null; // set to variants to main media active group\n\n if (media.attributes[type]) {\n variants = groups[media.attributes[type]];\n }\n const groupKeys = Object.keys(groups);\n if (!variants) {\n // find the mainPlaylistLoader media\n // that is in a media group if we are dealing\n // with audio only\n if (type === 'AUDIO' && groupKeys.length > 1 && isAudioOnly(settings.main)) {\n for (let i = 0; i < groupKeys.length; i++) {\n const groupPropertyList = groups[groupKeys[i]];\n if (groupMatch(groupPropertyList, media)) {\n variants = groupPropertyList;\n break;\n }\n } // use the main group if it exists\n } else if (groups.main) {\n variants = groups.main; // only one group, use that one\n } else if (groupKeys.length === 1) {\n variants = groups[groupKeys[0]];\n }\n }\n if (typeof track === 'undefined') {\n return variants;\n }\n if (track === null || !variants) {\n // An active track was specified so a corresponding group is expected. track === null\n // means no track is currently active so there is no corresponding group\n return null;\n }\n return variants.filter(props => props.id === track.id)[0] || null;\n};\nconst activeTrack = {\n /**\n * Returns a function used to get the active track of type provided\n *\n * @param {string} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @return {Function}\n * Function that returns the active media track for the provided type. Returns\n * null if no track is active\n * @function activeTrack.AUDIO\n */\n AUDIO: (type, settings) => () => {\n const {\n mediaTypes: {\n [type]: {\n tracks\n }\n }\n } = settings;\n for (const id in tracks) {\n if (tracks[id].enabled) {\n return tracks[id];\n }\n }\n return null;\n },\n /**\n * Returns a function used to get the active track of type provided\n *\n * @param {string} type\n * MediaGroup type\n * @param {Object} settings\n * Object containing required information for media groups\n * @return {Function}\n * Function that returns the active media track for the provided type. Returns\n * null if no track is active\n * @function activeTrack.SUBTITLES\n */\n SUBTITLES: (type, settings) => () => {\n const {\n mediaTypes: {\n [type]: {\n tracks\n }\n }\n } = settings;\n for (const id in tracks) {\n if (tracks[id].mode === 'showing' || tracks[id].mode === 'hidden') {\n return tracks[id];\n }\n }\n return null;\n }\n};\nconst getActiveGroup = (type, {\n mediaTypes\n}) => () => {\n const activeTrack_ = mediaTypes[type].activeTrack();\n if (!activeTrack_) {\n return null;\n }\n return mediaTypes[type].activeGroup(activeTrack_);\n};\n/**\n * Setup PlaylistLoaders and Tracks for media groups (Audio, Subtitles,\n * Closed-Captions) specified in the main manifest.\n *\n * @param {Object} settings\n * Object containing required information for setting up the media groups\n * @param {Tech} settings.tech\n * The tech of the player\n * @param {Object} settings.requestOptions\n * XHR request options used by the segment loaders\n * @param {PlaylistLoader} settings.mainPlaylistLoader\n * PlaylistLoader for the main source\n * @param {VhsHandler} settings.vhs\n * VHS SourceHandler\n * @param {Object} settings.main\n * The parsed main manifest\n * @param {Object} settings.mediaTypes\n * Object to store the loaders, tracks, and utility methods for each media type\n * @param {Function} settings.excludePlaylist\n * Excludes the current rendition and forces a rendition switch.\n * @function setupMediaGroups\n */\n\nconst setupMediaGroups = settings => {\n ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(type => {\n initialize[type](type, settings);\n });\n const {\n mediaTypes,\n mainPlaylistLoader,\n tech,\n vhs,\n segmentLoaders: {\n ['AUDIO']: audioSegmentLoader,\n main: mainSegmentLoader\n }\n } = settings; // setup active group and track getters and change event handlers\n\n ['AUDIO', 'SUBTITLES'].forEach(type => {\n mediaTypes[type].activeGroup = activeGroup(type, settings);\n mediaTypes[type].activeTrack = activeTrack[type](type, settings);\n mediaTypes[type].onGroupChanged = onGroupChanged(type, settings);\n mediaTypes[type].onGroupChanging = onGroupChanging(type, settings);\n mediaTypes[type].onTrackChanged = onTrackChanged(type, settings);\n mediaTypes[type].getActiveGroup = getActiveGroup(type, settings);\n }); // DO NOT enable the default subtitle or caption track.\n // DO enable the default audio track\n\n const audioGroup = mediaTypes.AUDIO.activeGroup();\n if (audioGroup) {\n const groupId = (audioGroup.filter(group => group.default)[0] || audioGroup[0]).id;\n mediaTypes.AUDIO.tracks[groupId].enabled = true;\n mediaTypes.AUDIO.onGroupChanged();\n mediaTypes.AUDIO.onTrackChanged();\n const activeAudioGroup = mediaTypes.AUDIO.getActiveGroup(); // a similar check for handling setAudio on each loader is run again each time the\n // track is changed, but needs to be handled here since the track may not be considered\n // changed on the first call to onTrackChanged\n\n if (!activeAudioGroup.playlistLoader) {\n // either audio is muxed with video or the stream is audio only\n mainSegmentLoader.setAudio(true);\n } else {\n // audio is demuxed\n mainSegmentLoader.setAudio(false);\n audioSegmentLoader.setAudio(true);\n }\n }\n mainPlaylistLoader.on('mediachange', () => {\n ['AUDIO', 'SUBTITLES'].forEach(type => mediaTypes[type].onGroupChanged());\n });\n mainPlaylistLoader.on('mediachanging', () => {\n ['AUDIO', 'SUBTITLES'].forEach(type => mediaTypes[type].onGroupChanging());\n }); // custom audio track change event handler for usage event\n\n const onAudioTrackChanged = () => {\n mediaTypes.AUDIO.onTrackChanged();\n tech.trigger({\n type: 'usage',\n name: 'vhs-audio-change'\n });\n };\n tech.audioTracks().addEventListener('change', onAudioTrackChanged);\n tech.remoteTextTracks().addEventListener('change', mediaTypes.SUBTITLES.onTrackChanged);\n vhs.on('dispose', () => {\n tech.audioTracks().removeEventListener('change', onAudioTrackChanged);\n tech.remoteTextTracks().removeEventListener('change', mediaTypes.SUBTITLES.onTrackChanged);\n }); // clear existing audio tracks and add the ones we just created\n\n tech.clearTracks('audio');\n for (const id in mediaTypes.AUDIO.tracks) {\n tech.audioTracks().addTrack(mediaTypes.AUDIO.tracks[id]);\n }\n};\n/**\n * Creates skeleton object used to store the loaders, tracks, and utility methods for each\n * media type\n *\n * @return {Object}\n * Object to store the loaders, tracks, and utility methods for each media type\n * @function createMediaTypes\n */\n\nconst createMediaTypes = () => {\n const mediaTypes = {};\n ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(type => {\n mediaTypes[type] = {\n groups: {},\n tracks: {},\n activePlaylistLoader: null,\n activeGroup: noop,\n activeTrack: noop,\n getActiveGroup: noop,\n onGroupChanged: noop,\n onTrackChanged: noop,\n lastTrack_: null,\n logger_: logger(`MediaGroups[${type}]`)\n };\n });\n return mediaTypes;\n};\n\n/**\n * A utility class for setting properties and maintaining the state of the content steering manifest.\n *\n * Content Steering manifest format:\n * VERSION: number (required) currently only version 1 is supported.\n * TTL: number in seconds (optional) until the next content steering manifest reload.\n * RELOAD-URI: string (optional) uri to fetch the next content steering manifest.\n * SERVICE-LOCATION-PRIORITY or PATHWAY-PRIORITY a non empty array of unique string values.\n */\n\nclass SteeringManifest {\n constructor() {\n this.priority_ = [];\n }\n set version(number) {\n // Only version 1 is currently supported for both DASH and HLS.\n if (number === 1) {\n this.version_ = number;\n }\n }\n set ttl(seconds) {\n // TTL = time-to-live, default = 300 seconds.\n this.ttl_ = seconds || 300;\n }\n set reloadUri(uri) {\n if (uri) {\n // reload URI can be relative to the previous reloadUri.\n this.reloadUri_ = resolveUrl(this.reloadUri_, uri);\n }\n }\n set priority(array) {\n // priority must be non-empty and unique values.\n if (array && array.length) {\n this.priority_ = array;\n }\n }\n get version() {\n return this.version_;\n }\n get ttl() {\n return this.ttl_;\n }\n get reloadUri() {\n return this.reloadUri_;\n }\n get priority() {\n return this.priority_;\n }\n}\n/**\n * This class represents a content steering manifest and associated state. See both HLS and DASH specifications.\n * HLS: https://developer.apple.com/streaming/HLSContentSteeringSpecification.pdf and\n * https://datatracker.ietf.org/doc/draft-pantos-hls-rfc8216bis/ section 4.4.6.6.\n * DASH: https://dashif.org/docs/DASH-IF-CTS-00XX-Content-Steering-Community-Review.pdf\n *\n * @param {function} xhr for making a network request from the browser.\n * @param {function} bandwidth for fetching the current bandwidth from the main segment loader.\n */\n\nclass ContentSteeringController extends videojs.EventTarget {\n constructor(xhr, bandwidth) {\n super();\n this.currentPathway = null;\n this.defaultPathway = null;\n this.queryBeforeStart = null;\n this.availablePathways_ = new Set();\n this.excludedPathways_ = new Set();\n this.steeringManifest = new SteeringManifest();\n this.proxyServerUrl_ = null;\n this.manifestType_ = null;\n this.ttlTimeout_ = null;\n this.request_ = null;\n this.excludedSteeringManifestURLs = new Set();\n this.logger_ = logger('Content Steering');\n this.xhr_ = xhr;\n this.getBandwidth_ = bandwidth;\n }\n /**\n * Assigns the content steering tag properties to the steering controller\n *\n * @param {string} baseUrl the baseURL from the manifest for resolving the steering manifest url\n * @param {Object} steeringTag the content steering tag from the main manifest\n */\n\n assignTagProperties(baseUrl, steeringTag) {\n this.manifestType_ = steeringTag.serverUri ? 'HLS' : 'DASH'; // serverUri is HLS serverURL is DASH\n\n const steeringUri = steeringTag.serverUri || steeringTag.serverURL;\n if (!steeringUri) {\n this.logger_(`steering manifest URL is ${steeringUri}, cannot request steering manifest.`);\n this.trigger('error');\n return;\n } // Content steering manifests can be encoded as a data URI. We can decode, parse and return early if that's the case.\n\n if (steeringUri.startsWith('data:')) {\n this.decodeDataUriManifest_(steeringUri.substring(steeringUri.indexOf(',') + 1));\n return;\n } // With DASH queryBeforeStart, we want to use the steeringUri as soon as possible for the request.\n\n this.steeringManifest.reloadUri = this.queryBeforeStart ? steeringUri : resolveUrl(baseUrl, steeringUri); // pathwayId is HLS defaultServiceLocation is DASH\n\n this.defaultPathway = steeringTag.pathwayId || steeringTag.defaultServiceLocation; // currently only DASH supports the following properties on tags.\n\n this.queryBeforeStart = steeringTag.queryBeforeStart || false;\n this.proxyServerUrl_ = steeringTag.proxyServerURL || null; // trigger a steering event if we have a pathway from the content steering tag.\n // this tells VHS which segment pathway to start with.\n // If queryBeforeStart is true we need to wait for the steering manifest response.\n\n if (this.defaultPathway && !this.queryBeforeStart) {\n this.trigger('content-steering');\n }\n if (this.queryBeforeStart) {\n this.requestSteeringManifest(this.steeringManifest.reloadUri);\n }\n }\n /**\n * Requests the content steering manifest and parse the response. This should only be called after\n * assignTagProperties was called with a content steering tag.\n *\n * @param {string} initialUri The optional uri to make the request with.\n * If set, the request should be made with exactly what is passed in this variable.\n * This scenario is specific to DASH when the queryBeforeStart parameter is true.\n * This scenario should only happen once on initalization.\n */\n\n requestSteeringManifest(initialUri) {\n const reloadUri = this.steeringManifest.reloadUri;\n if (!initialUri && !reloadUri) {\n return;\n } // We currently don't support passing MPD query parameters directly to the content steering URL as this requires\n // ExtUrlQueryInfo tag support. See the DASH content steering spec section 8.1.\n // This request URI accounts for manifest URIs that have been excluded.\n\n const uri = initialUri || this.getRequestURI(reloadUri); // If there are no valid manifest URIs, we should stop content steering.\n\n if (!uri) {\n this.logger_('No valid content steering manifest URIs. Stopping content steering.');\n this.trigger('error');\n this.dispose();\n return;\n }\n this.request_ = this.xhr_({\n uri\n }, (error, errorInfo) => {\n if (error) {\n // If the client receives HTTP 410 Gone in response to a manifest request,\n // it MUST NOT issue another request for that URI for the remainder of the\n // playback session. It MAY continue to use the most-recently obtained set\n // of Pathways.\n if (errorInfo.status === 410) {\n this.logger_(`manifest request 410 ${error}.`);\n this.logger_(`There will be no more content steering requests to ${uri} this session.`);\n this.excludedSteeringManifestURLs.add(uri);\n return;\n } // If the client receives HTTP 429 Too Many Requests with a Retry-After\n // header in response to a manifest request, it SHOULD wait until the time\n // specified by the Retry-After header to reissue the request.\n\n if (errorInfo.status === 429) {\n const retrySeconds = errorInfo.responseHeaders['retry-after'];\n this.logger_(`manifest request 429 ${error}.`);\n this.logger_(`content steering will retry in ${retrySeconds} seconds.`);\n this.startTTLTimeout_(parseInt(retrySeconds, 10));\n return;\n } // If the Steering Manifest cannot be loaded and parsed correctly, the\n // client SHOULD continue to use the previous values and attempt to reload\n // it after waiting for the previously-specified TTL (or 5 minutes if\n // none).\n\n this.logger_(`manifest failed to load ${error}.`);\n this.startTTLTimeout_();\n return;\n }\n const steeringManifestJson = JSON.parse(this.request_.responseText);\n this.startTTLTimeout_();\n this.assignSteeringProperties_(steeringManifestJson);\n });\n }\n /**\n * Set the proxy server URL and add the steering manifest url as a URI encoded parameter.\n *\n * @param {string} steeringUrl the steering manifest url\n * @return the steering manifest url to a proxy server with all parameters set\n */\n\n setProxyServerUrl_(steeringUrl) {\n const steeringUrlObject = new window$1.URL(steeringUrl);\n const proxyServerUrlObject = new window$1.URL(this.proxyServerUrl_);\n proxyServerUrlObject.searchParams.set('url', encodeURI(steeringUrlObject.toString()));\n return this.setSteeringParams_(proxyServerUrlObject.toString());\n }\n /**\n * Decodes and parses the data uri encoded steering manifest\n *\n * @param {string} dataUri the data uri to be decoded and parsed.\n */\n\n decodeDataUriManifest_(dataUri) {\n const steeringManifestJson = JSON.parse(window$1.atob(dataUri));\n this.assignSteeringProperties_(steeringManifestJson);\n }\n /**\n * Set the HLS or DASH content steering manifest request query parameters. For example:\n * _HLS_pathway=\"\" and _HLS_throughput=\n * _DASH_pathway and _DASH_throughput\n *\n * @param {string} uri to add content steering server parameters to.\n * @return a new uri as a string with the added steering query parameters.\n */\n\n setSteeringParams_(url) {\n const urlObject = new window$1.URL(url);\n const path = this.getPathway();\n const networkThroughput = this.getBandwidth_();\n if (path) {\n const pathwayKey = `_${this.manifestType_}_pathway`;\n urlObject.searchParams.set(pathwayKey, path);\n }\n if (networkThroughput) {\n const throughputKey = `_${this.manifestType_}_throughput`;\n urlObject.searchParams.set(throughputKey, networkThroughput);\n }\n return urlObject.toString();\n }\n /**\n * Assigns the current steering manifest properties and to the SteeringManifest object\n *\n * @param {Object} steeringJson the raw JSON steering manifest\n */\n\n assignSteeringProperties_(steeringJson) {\n this.steeringManifest.version = steeringJson.VERSION;\n if (!this.steeringManifest.version) {\n this.logger_(`manifest version is ${steeringJson.VERSION}, which is not supported.`);\n this.trigger('error');\n return;\n }\n this.steeringManifest.ttl = steeringJson.TTL;\n this.steeringManifest.reloadUri = steeringJson['RELOAD-URI']; // HLS = PATHWAY-PRIORITY required. DASH = SERVICE-LOCATION-PRIORITY optional\n\n this.steeringManifest.priority = steeringJson['PATHWAY-PRIORITY'] || steeringJson['SERVICE-LOCATION-PRIORITY']; // TODO: HLS handle PATHWAY-CLONES. See section 7.2 https://datatracker.ietf.org/doc/draft-pantos-hls-rfc8216bis/\n // 1. apply first pathway from the array.\n // 2. if first pathway doesn't exist in manifest, try next pathway.\n // a. if all pathways are exhausted, ignore the steering manifest priority.\n // 3. if segments fail from an established pathway, try all variants/renditions, then exclude the failed pathway.\n // a. exclude a pathway for a minimum of the last TTL duration. Meaning, from the next steering response,\n // the excluded pathway will be ignored.\n // See excludePathway usage in excludePlaylist().\n // If there are no available pathways, we need to stop content steering.\n\n if (!this.availablePathways_.size) {\n this.logger_('There are no available pathways for content steering. Ending content steering.');\n this.trigger('error');\n this.dispose();\n }\n const chooseNextPathway = pathwaysByPriority => {\n for (const path of pathwaysByPriority) {\n if (this.availablePathways_.has(path)) {\n return path;\n }\n } // If no pathway matches, ignore the manifest and choose the first available.\n\n return [...this.availablePathways_][0];\n };\n const nextPathway = chooseNextPathway(this.steeringManifest.priority);\n if (this.currentPathway !== nextPathway) {\n this.currentPathway = nextPathway;\n this.trigger('content-steering');\n }\n }\n /**\n * Returns the pathway to use for steering decisions\n *\n * @return {string} returns the current pathway or the default\n */\n\n getPathway() {\n return this.currentPathway || this.defaultPathway;\n }\n /**\n * Chooses the manifest request URI based on proxy URIs and server URLs.\n * Also accounts for exclusion on certain manifest URIs.\n *\n * @param {string} reloadUri the base uri before parameters\n *\n * @return {string} the final URI for the request to the manifest server.\n */\n\n getRequestURI(reloadUri) {\n if (!reloadUri) {\n return null;\n }\n const isExcluded = uri => this.excludedSteeringManifestURLs.has(uri);\n if (this.proxyServerUrl_) {\n const proxyURI = this.setProxyServerUrl_(reloadUri);\n if (!isExcluded(proxyURI)) {\n return proxyURI;\n }\n }\n const steeringURI = this.setSteeringParams_(reloadUri);\n if (!isExcluded(steeringURI)) {\n return steeringURI;\n } // Return nothing if all valid manifest URIs are excluded.\n\n return null;\n }\n /**\n * Start the timeout for re-requesting the steering manifest at the TTL interval.\n *\n * @param {number} ttl time in seconds of the timeout. Defaults to the\n * ttl interval in the steering manifest\n */\n\n startTTLTimeout_(ttl = this.steeringManifest.ttl) {\n // 300 (5 minutes) is the default value.\n const ttlMS = ttl * 1000;\n this.ttlTimeout_ = window$1.setTimeout(() => {\n this.requestSteeringManifest();\n }, ttlMS);\n }\n /**\n * Clear the TTL timeout if necessary.\n */\n\n clearTTLTimeout_() {\n window$1.clearTimeout(this.ttlTimeout_);\n this.ttlTimeout_ = null;\n }\n /**\n * aborts any current steering xhr and sets the current request object to null\n */\n\n abort() {\n if (this.request_) {\n this.request_.abort();\n }\n this.request_ = null;\n }\n /**\n * aborts steering requests clears the ttl timeout and resets all properties.\n */\n\n dispose() {\n this.off('content-steering');\n this.off('error');\n this.abort();\n this.clearTTLTimeout_();\n this.currentPathway = null;\n this.defaultPathway = null;\n this.queryBeforeStart = null;\n this.proxyServerUrl_ = null;\n this.manifestType_ = null;\n this.ttlTimeout_ = null;\n this.request_ = null;\n this.excludedSteeringManifestURLs = new Set();\n this.availablePathways_ = new Set();\n this.excludedPathways_ = new Set();\n this.steeringManifest = new SteeringManifest();\n }\n /**\n * adds a pathway to the available pathways set\n *\n * @param {string} pathway the pathway string to add\n */\n\n addAvailablePathway(pathway) {\n if (pathway) {\n this.availablePathways_.add(pathway);\n }\n }\n /**\n * clears all pathways from the available pathways set\n */\n\n clearAvailablePathways() {\n this.availablePathways_.clear();\n }\n excludePathway(pathway) {\n return this.availablePathways_.delete(pathway);\n }\n}\n\n/**\n * @file playlist-controller.js\n */\nconst ABORT_EARLY_EXCLUSION_SECONDS = 10;\nlet Vhs$1; // SegmentLoader stats that need to have each loader's\n// values summed to calculate the final value\n\nconst loaderStats = ['mediaRequests', 'mediaRequestsAborted', 'mediaRequestsTimedout', 'mediaRequestsErrored', 'mediaTransferDuration', 'mediaBytesTransferred', 'mediaAppends'];\nconst sumLoaderStat = function (stat) {\n return this.audioSegmentLoader_[stat] + this.mainSegmentLoader_[stat];\n};\nconst shouldSwitchToMedia = function ({\n currentPlaylist,\n buffered,\n currentTime,\n nextPlaylist,\n bufferLowWaterLine,\n bufferHighWaterLine,\n duration,\n bufferBasedABR,\n log\n}) {\n // we have no other playlist to switch to\n if (!nextPlaylist) {\n videojs.log.warn('We received no playlist to switch to. Please check your stream.');\n return false;\n }\n const sharedLogLine = `allowing switch ${currentPlaylist && currentPlaylist.id || 'null'} -> ${nextPlaylist.id}`;\n if (!currentPlaylist) {\n log(`${sharedLogLine} as current playlist is not set`);\n return true;\n } // no need to switch if playlist is the same\n\n if (nextPlaylist.id === currentPlaylist.id) {\n return false;\n } // determine if current time is in a buffered range.\n\n const isBuffered = Boolean(findRange(buffered, currentTime).length); // If the playlist is live, then we want to not take low water line into account.\n // This is because in LIVE, the player plays 3 segments from the end of the\n // playlist, and if `BUFFER_LOW_WATER_LINE` is greater than the duration availble\n // in those segments, a viewer will never experience a rendition upswitch.\n\n if (!currentPlaylist.endList) {\n // For LLHLS live streams, don't switch renditions before playback has started, as it almost\n // doubles the time to first playback.\n if (!isBuffered && typeof currentPlaylist.partTargetDuration === 'number') {\n log(`not ${sharedLogLine} as current playlist is live llhls, but currentTime isn't in buffered.`);\n return false;\n }\n log(`${sharedLogLine} as current playlist is live`);\n return true;\n }\n const forwardBuffer = timeAheadOf(buffered, currentTime);\n const maxBufferLowWaterLine = bufferBasedABR ? Config.EXPERIMENTAL_MAX_BUFFER_LOW_WATER_LINE : Config.MAX_BUFFER_LOW_WATER_LINE; // For the same reason as LIVE, we ignore the low water line when the VOD\n // duration is below the max potential low water line\n\n if (duration < maxBufferLowWaterLine) {\n log(`${sharedLogLine} as duration < max low water line (${duration} < ${maxBufferLowWaterLine})`);\n return true;\n }\n const nextBandwidth = nextPlaylist.attributes.BANDWIDTH;\n const currBandwidth = currentPlaylist.attributes.BANDWIDTH; // when switching down, if our buffer is lower than the high water line,\n // we can switch down\n\n if (nextBandwidth < currBandwidth && (!bufferBasedABR || forwardBuffer < bufferHighWaterLine)) {\n let logLine = `${sharedLogLine} as next bandwidth < current bandwidth (${nextBandwidth} < ${currBandwidth})`;\n if (bufferBasedABR) {\n logLine += ` and forwardBuffer < bufferHighWaterLine (${forwardBuffer} < ${bufferHighWaterLine})`;\n }\n log(logLine);\n return true;\n } // and if our buffer is higher than the low water line,\n // we can switch up\n\n if ((!bufferBasedABR || nextBandwidth > currBandwidth) && forwardBuffer >= bufferLowWaterLine) {\n let logLine = `${sharedLogLine} as forwardBuffer >= bufferLowWaterLine (${forwardBuffer} >= ${bufferLowWaterLine})`;\n if (bufferBasedABR) {\n logLine += ` and next bandwidth > current bandwidth (${nextBandwidth} > ${currBandwidth})`;\n }\n log(logLine);\n return true;\n }\n log(`not ${sharedLogLine} as no switching criteria met`);\n return false;\n};\n/**\n * the main playlist controller controller all interactons\n * between playlists and segmentloaders. At this time this mainly\n * involves a main playlist and a series of audio playlists\n * if they are available\n *\n * @class PlaylistController\n * @extends videojs.EventTarget\n */\n\nclass PlaylistController extends videojs.EventTarget {\n constructor(options) {\n super();\n const {\n src,\n withCredentials,\n tech,\n bandwidth,\n externVhs,\n useCueTags,\n playlistExclusionDuration,\n enableLowInitialPlaylist,\n sourceType,\n cacheEncryptionKeys,\n bufferBasedABR,\n leastPixelDiffSelector,\n captionServices\n } = options;\n if (!src) {\n throw new Error('A non-empty playlist URL or JSON manifest string is required');\n }\n let {\n maxPlaylistRetries\n } = options;\n if (maxPlaylistRetries === null || typeof maxPlaylistRetries === 'undefined') {\n maxPlaylistRetries = Infinity;\n }\n Vhs$1 = externVhs;\n this.bufferBasedABR = Boolean(bufferBasedABR);\n this.leastPixelDiffSelector = Boolean(leastPixelDiffSelector);\n this.withCredentials = withCredentials;\n this.tech_ = tech;\n this.vhs_ = tech.vhs;\n this.sourceType_ = sourceType;\n this.useCueTags_ = useCueTags;\n this.playlistExclusionDuration = playlistExclusionDuration;\n this.maxPlaylistRetries = maxPlaylistRetries;\n this.enableLowInitialPlaylist = enableLowInitialPlaylist;\n if (this.useCueTags_) {\n this.cueTagsTrack_ = this.tech_.addTextTrack('metadata', 'ad-cues');\n this.cueTagsTrack_.inBandMetadataTrackDispatchType = '';\n }\n this.requestOptions_ = {\n withCredentials,\n maxPlaylistRetries,\n timeout: null\n };\n this.on('error', this.pauseLoading);\n this.mediaTypes_ = createMediaTypes();\n this.mediaSource = new window$1.MediaSource();\n this.handleDurationChange_ = this.handleDurationChange_.bind(this);\n this.handleSourceOpen_ = this.handleSourceOpen_.bind(this);\n this.handleSourceEnded_ = this.handleSourceEnded_.bind(this);\n this.mediaSource.addEventListener('durationchange', this.handleDurationChange_); // load the media source into the player\n\n this.mediaSource.addEventListener('sourceopen', this.handleSourceOpen_);\n this.mediaSource.addEventListener('sourceended', this.handleSourceEnded_); // we don't have to handle sourceclose since dispose will handle termination of\n // everything, and the MediaSource should not be detached without a proper disposal\n\n this.seekable_ = createTimeRanges();\n this.hasPlayed_ = false;\n this.syncController_ = new SyncController(options);\n this.segmentMetadataTrack_ = tech.addRemoteTextTrack({\n kind: 'metadata',\n label: 'segment-metadata'\n }, false).track;\n this.decrypter_ = new Decrypter();\n this.sourceUpdater_ = new SourceUpdater(this.mediaSource);\n this.inbandTextTracks_ = {};\n this.timelineChangeController_ = new TimelineChangeController();\n const segmentLoaderSettings = {\n vhs: this.vhs_,\n parse708captions: options.parse708captions,\n useDtsForTimestampOffset: options.useDtsForTimestampOffset,\n calculateTimestampOffsetForEachSegment: options.calculateTimestampOffsetForEachSegment,\n captionServices,\n mediaSource: this.mediaSource,\n currentTime: this.tech_.currentTime.bind(this.tech_),\n seekable: () => this.seekable(),\n seeking: () => this.tech_.seeking(),\n duration: () => this.duration(),\n hasPlayed: () => this.hasPlayed_,\n goalBufferLength: () => this.goalBufferLength(),\n bandwidth,\n syncController: this.syncController_,\n decrypter: this.decrypter_,\n sourceType: this.sourceType_,\n inbandTextTracks: this.inbandTextTracks_,\n cacheEncryptionKeys,\n sourceUpdater: this.sourceUpdater_,\n timelineChangeController: this.timelineChangeController_,\n exactManifestTimings: options.exactManifestTimings,\n addMetadataToTextTrack: this.addMetadataToTextTrack.bind(this)\n }; // The source type check not only determines whether a special DASH playlist loader\n // should be used, but also covers the case where the provided src is a vhs-json\n // manifest object (instead of a URL). In the case of vhs-json, the default\n // PlaylistLoader should be used.\n\n this.mainPlaylistLoader_ = this.sourceType_ === 'dash' ? new DashPlaylistLoader(src, this.vhs_, merge(this.requestOptions_, {\n addMetadataToTextTrack: this.addMetadataToTextTrack.bind(this)\n })) : new PlaylistLoader(src, this.vhs_, merge(this.requestOptions_, {\n addDateRangesToTextTrack: this.addDateRangesToTextTrack_.bind(this)\n }));\n this.setupMainPlaylistLoaderListeners_(); // setup segment loaders\n // combined audio/video or just video when alternate audio track is selected\n\n this.mainSegmentLoader_ = new SegmentLoader(merge(segmentLoaderSettings, {\n segmentMetadataTrack: this.segmentMetadataTrack_,\n loaderType: 'main'\n }), options); // alternate audio track\n\n this.audioSegmentLoader_ = new SegmentLoader(merge(segmentLoaderSettings, {\n loaderType: 'audio'\n }), options);\n this.subtitleSegmentLoader_ = new VTTSegmentLoader(merge(segmentLoaderSettings, {\n loaderType: 'vtt',\n featuresNativeTextTracks: this.tech_.featuresNativeTextTracks,\n loadVttJs: () => new Promise((resolve, reject) => {\n function onLoad() {\n tech.off('vttjserror', onError);\n resolve();\n }\n function onError() {\n tech.off('vttjsloaded', onLoad);\n reject();\n }\n tech.one('vttjsloaded', onLoad);\n tech.one('vttjserror', onError); // safe to call multiple times, script will be loaded only once:\n\n tech.addWebVttScript_();\n })\n }), options);\n const getBandwidth = () => {\n return this.mainSegmentLoader_.bandwidth;\n };\n this.contentSteeringController_ = new ContentSteeringController(this.vhs_.xhr, getBandwidth);\n this.setupSegmentLoaderListeners_();\n if (this.bufferBasedABR) {\n this.mainPlaylistLoader_.one('loadedplaylist', () => this.startABRTimer_());\n this.tech_.on('pause', () => this.stopABRTimer_());\n this.tech_.on('play', () => this.startABRTimer_());\n } // Create SegmentLoader stat-getters\n // mediaRequests_\n // mediaRequestsAborted_\n // mediaRequestsTimedout_\n // mediaRequestsErrored_\n // mediaTransferDuration_\n // mediaBytesTransferred_\n // mediaAppends_\n\n loaderStats.forEach(stat => {\n this[stat + '_'] = sumLoaderStat.bind(this, stat);\n });\n this.logger_ = logger('pc');\n this.triggeredFmp4Usage = false;\n if (this.tech_.preload() === 'none') {\n this.loadOnPlay_ = () => {\n this.loadOnPlay_ = null;\n this.mainPlaylistLoader_.load();\n };\n this.tech_.one('play', this.loadOnPlay_);\n } else {\n this.mainPlaylistLoader_.load();\n }\n this.timeToLoadedData__ = -1;\n this.mainAppendsToLoadedData__ = -1;\n this.audioAppendsToLoadedData__ = -1;\n const event = this.tech_.preload() === 'none' ? 'play' : 'loadstart'; // start the first frame timer on loadstart or play (for preload none)\n\n this.tech_.one(event, () => {\n const timeToLoadedDataStart = Date.now();\n this.tech_.one('loadeddata', () => {\n this.timeToLoadedData__ = Date.now() - timeToLoadedDataStart;\n this.mainAppendsToLoadedData__ = this.mainSegmentLoader_.mediaAppends;\n this.audioAppendsToLoadedData__ = this.audioSegmentLoader_.mediaAppends;\n });\n });\n }\n mainAppendsToLoadedData_() {\n return this.mainAppendsToLoadedData__;\n }\n audioAppendsToLoadedData_() {\n return this.audioAppendsToLoadedData__;\n }\n appendsToLoadedData_() {\n const main = this.mainAppendsToLoadedData_();\n const audio = this.audioAppendsToLoadedData_();\n if (main === -1 || audio === -1) {\n return -1;\n }\n return main + audio;\n }\n timeToLoadedData_() {\n return this.timeToLoadedData__;\n }\n /**\n * Run selectPlaylist and switch to the new playlist if we should\n *\n * @param {string} [reason=abr] a reason for why the ABR check is made\n * @private\n */\n\n checkABR_(reason = 'abr') {\n const nextPlaylist = this.selectPlaylist();\n if (nextPlaylist && this.shouldSwitchToMedia_(nextPlaylist)) {\n this.switchMedia_(nextPlaylist, reason);\n }\n }\n switchMedia_(playlist, cause, delay) {\n const oldMedia = this.media();\n const oldId = oldMedia && (oldMedia.id || oldMedia.uri);\n const newId = playlist.id || playlist.uri;\n if (oldId && oldId !== newId) {\n this.logger_(`switch media ${oldId} -> ${newId} from ${cause}`);\n this.tech_.trigger({\n type: 'usage',\n name: `vhs-rendition-change-${cause}`\n });\n }\n this.mainPlaylistLoader_.media(playlist, delay);\n }\n /**\n * A function that ensures we switch our playlists inside of `mediaTypes`\n * to match the current `serviceLocation` provided by the contentSteering controller.\n * We want to check media types of `AUDIO`, `SUBTITLES`, and `CLOSED-CAPTIONS`.\n *\n * This should only be called on a DASH playback scenario while using content steering.\n * This is necessary due to differences in how media in HLS manifests are generally tied to\n * a video playlist, where in DASH that is not always the case.\n */\n\n switchMediaForDASHContentSteering_() {\n ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(type => {\n const mediaType = this.mediaTypes_[type];\n const activeGroup = mediaType ? mediaType.activeGroup() : null;\n const pathway = this.contentSteeringController_.getPathway();\n if (activeGroup && pathway) {\n // activeGroup can be an array or a single group\n const mediaPlaylists = activeGroup.length ? activeGroup[0].playlists : activeGroup.playlists;\n const dashMediaPlaylists = mediaPlaylists.filter(p => p.attributes.serviceLocation === pathway); // Switch the current active playlist to the correct CDN\n\n if (dashMediaPlaylists.length) {\n this.mediaTypes_[type].activePlaylistLoader.media(dashMediaPlaylists[0]);\n }\n }\n });\n }\n /**\n * Start a timer that periodically calls checkABR_\n *\n * @private\n */\n\n startABRTimer_() {\n this.stopABRTimer_();\n this.abrTimer_ = window$1.setInterval(() => this.checkABR_(), 250);\n }\n /**\n * Stop the timer that periodically calls checkABR_\n *\n * @private\n */\n\n stopABRTimer_() {\n // if we're scrubbing, we don't need to pause.\n // This getter will be added to Video.js in version 7.11.\n if (this.tech_.scrubbing && this.tech_.scrubbing()) {\n return;\n }\n window$1.clearInterval(this.abrTimer_);\n this.abrTimer_ = null;\n }\n /**\n * Get a list of playlists for the currently selected audio playlist\n *\n * @return {Array} the array of audio playlists\n */\n\n getAudioTrackPlaylists_() {\n const main = this.main();\n const defaultPlaylists = main && main.playlists || []; // if we don't have any audio groups then we can only\n // assume that the audio tracks are contained in main\n // playlist array, use that or an empty array.\n\n if (!main || !main.mediaGroups || !main.mediaGroups.AUDIO) {\n return defaultPlaylists;\n }\n const AUDIO = main.mediaGroups.AUDIO;\n const groupKeys = Object.keys(AUDIO);\n let track; // get the current active track\n\n if (Object.keys(this.mediaTypes_.AUDIO.groups).length) {\n track = this.mediaTypes_.AUDIO.activeTrack(); // or get the default track from main if mediaTypes_ isn't setup yet\n } else {\n // default group is `main` or just the first group.\n const defaultGroup = AUDIO.main || groupKeys.length && AUDIO[groupKeys[0]];\n for (const label in defaultGroup) {\n if (defaultGroup[label].default) {\n track = {\n label\n };\n break;\n }\n }\n } // no active track no playlists.\n\n if (!track) {\n return defaultPlaylists;\n }\n const playlists = []; // get all of the playlists that are possible for the\n // active track.\n\n for (const group in AUDIO) {\n if (AUDIO[group][track.label]) {\n const properties = AUDIO[group][track.label];\n if (properties.playlists && properties.playlists.length) {\n playlists.push.apply(playlists, properties.playlists);\n } else if (properties.uri) {\n playlists.push(properties);\n } else if (main.playlists.length) {\n // if an audio group does not have a uri\n // see if we have main playlists that use it as a group.\n // if we do then add those to the playlists list.\n for (let i = 0; i < main.playlists.length; i++) {\n const playlist = main.playlists[i];\n if (playlist.attributes && playlist.attributes.AUDIO && playlist.attributes.AUDIO === group) {\n playlists.push(playlist);\n }\n }\n }\n }\n }\n if (!playlists.length) {\n return defaultPlaylists;\n }\n return playlists;\n }\n /**\n * Register event handlers on the main playlist loader. A helper\n * function for construction time.\n *\n * @private\n */\n\n setupMainPlaylistLoaderListeners_() {\n this.mainPlaylistLoader_.on('loadedmetadata', () => {\n const media = this.mainPlaylistLoader_.media();\n const requestTimeout = media.targetDuration * 1.5 * 1000; // If we don't have any more available playlists, we don't want to\n // timeout the request.\n\n if (isLowestEnabledRendition(this.mainPlaylistLoader_.main, this.mainPlaylistLoader_.media())) {\n this.requestOptions_.timeout = 0;\n } else {\n this.requestOptions_.timeout = requestTimeout;\n } // if this isn't a live video and preload permits, start\n // downloading segments\n\n if (media.endList && this.tech_.preload() !== 'none') {\n this.mainSegmentLoader_.playlist(media, this.requestOptions_);\n this.mainSegmentLoader_.load();\n }\n setupMediaGroups({\n sourceType: this.sourceType_,\n segmentLoaders: {\n AUDIO: this.audioSegmentLoader_,\n SUBTITLES: this.subtitleSegmentLoader_,\n main: this.mainSegmentLoader_\n },\n tech: this.tech_,\n requestOptions: this.requestOptions_,\n mainPlaylistLoader: this.mainPlaylistLoader_,\n vhs: this.vhs_,\n main: this.main(),\n mediaTypes: this.mediaTypes_,\n excludePlaylist: this.excludePlaylist.bind(this)\n });\n this.triggerPresenceUsage_(this.main(), media);\n this.setupFirstPlay();\n if (!this.mediaTypes_.AUDIO.activePlaylistLoader || this.mediaTypes_.AUDIO.activePlaylistLoader.media()) {\n this.trigger('selectedinitialmedia');\n } else {\n // We must wait for the active audio playlist loader to\n // finish setting up before triggering this event so the\n // representations API and EME setup is correct\n this.mediaTypes_.AUDIO.activePlaylistLoader.one('loadedmetadata', () => {\n this.trigger('selectedinitialmedia');\n });\n }\n });\n this.mainPlaylistLoader_.on('loadedplaylist', () => {\n if (this.loadOnPlay_) {\n this.tech_.off('play', this.loadOnPlay_);\n }\n let updatedPlaylist = this.mainPlaylistLoader_.media();\n if (!updatedPlaylist) {\n this.initContentSteeringController_(); // exclude any variants that are not supported by the browser before selecting\n // an initial media as the playlist selectors do not consider browser support\n\n this.excludeUnsupportedVariants_();\n let selectedMedia;\n if (this.enableLowInitialPlaylist) {\n selectedMedia = this.selectInitialPlaylist();\n }\n if (!selectedMedia) {\n selectedMedia = this.selectPlaylist();\n }\n if (!selectedMedia || !this.shouldSwitchToMedia_(selectedMedia)) {\n return;\n }\n this.initialMedia_ = selectedMedia;\n this.switchMedia_(this.initialMedia_, 'initial'); // Under the standard case where a source URL is provided, loadedplaylist will\n // fire again since the playlist will be requested. In the case of vhs-json\n // (where the manifest object is provided as the source), when the media\n // playlist's `segments` list is already available, a media playlist won't be\n // requested, and loadedplaylist won't fire again, so the playlist handler must be\n // called on its own here.\n\n const haveJsonSource = this.sourceType_ === 'vhs-json' && this.initialMedia_.segments;\n if (!haveJsonSource) {\n return;\n }\n updatedPlaylist = this.initialMedia_;\n }\n this.handleUpdatedMediaPlaylist(updatedPlaylist);\n });\n this.mainPlaylistLoader_.on('error', () => {\n const error = this.mainPlaylistLoader_.error;\n this.excludePlaylist({\n playlistToExclude: error.playlist,\n error\n });\n });\n this.mainPlaylistLoader_.on('mediachanging', () => {\n this.mainSegmentLoader_.abort();\n this.mainSegmentLoader_.pause();\n });\n this.mainPlaylistLoader_.on('mediachange', () => {\n const media = this.mainPlaylistLoader_.media();\n const requestTimeout = media.targetDuration * 1.5 * 1000; // If we don't have any more available playlists, we don't want to\n // timeout the request.\n\n if (isLowestEnabledRendition(this.mainPlaylistLoader_.main, this.mainPlaylistLoader_.media())) {\n this.requestOptions_.timeout = 0;\n } else {\n this.requestOptions_.timeout = requestTimeout;\n }\n this.mainPlaylistLoader_.load(); // TODO: Create a new event on the PlaylistLoader that signals\n // that the segments have changed in some way and use that to\n // update the SegmentLoader instead of doing it twice here and\n // on `loadedplaylist`\n\n this.mainSegmentLoader_.playlist(media, this.requestOptions_);\n this.mainSegmentLoader_.load();\n this.tech_.trigger({\n type: 'mediachange',\n bubbles: true\n });\n });\n this.mainPlaylistLoader_.on('playlistunchanged', () => {\n const updatedPlaylist = this.mainPlaylistLoader_.media(); // ignore unchanged playlists that have already been\n // excluded for not-changing. We likely just have a really slowly updating\n // playlist.\n\n if (updatedPlaylist.lastExcludeReason_ === 'playlist-unchanged') {\n return;\n }\n const playlistOutdated = this.stuckAtPlaylistEnd_(updatedPlaylist);\n if (playlistOutdated) {\n // Playlist has stopped updating and we're stuck at its end. Try to\n // exclude it and switch to another playlist in the hope that that\n // one is updating (and give the player a chance to re-adjust to the\n // safe live point).\n this.excludePlaylist({\n error: {\n message: 'Playlist no longer updating.',\n reason: 'playlist-unchanged'\n }\n }); // useful for monitoring QoS\n\n this.tech_.trigger('playliststuck');\n }\n });\n this.mainPlaylistLoader_.on('renditiondisabled', () => {\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-rendition-disabled'\n });\n });\n this.mainPlaylistLoader_.on('renditionenabled', () => {\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-rendition-enabled'\n });\n });\n }\n /**\n * Given an updated media playlist (whether it was loaded for the first time, or\n * refreshed for live playlists), update any relevant properties and state to reflect\n * changes in the media that should be accounted for (e.g., cues and duration).\n *\n * @param {Object} updatedPlaylist the updated media playlist object\n *\n * @private\n */\n\n handleUpdatedMediaPlaylist(updatedPlaylist) {\n if (this.useCueTags_) {\n this.updateAdCues_(updatedPlaylist);\n } // TODO: Create a new event on the PlaylistLoader that signals\n // that the segments have changed in some way and use that to\n // update the SegmentLoader instead of doing it twice here and\n // on `mediachange`\n\n this.mainSegmentLoader_.playlist(updatedPlaylist, this.requestOptions_);\n this.updateDuration(!updatedPlaylist.endList); // If the player isn't paused, ensure that the segment loader is running,\n // as it is possible that it was temporarily stopped while waiting for\n // a playlist (e.g., in case the playlist errored and we re-requested it).\n\n if (!this.tech_.paused()) {\n this.mainSegmentLoader_.load();\n if (this.audioSegmentLoader_) {\n this.audioSegmentLoader_.load();\n }\n }\n }\n /**\n * A helper function for triggerring presence usage events once per source\n *\n * @private\n */\n\n triggerPresenceUsage_(main, media) {\n const mediaGroups = main.mediaGroups || {};\n let defaultDemuxed = true;\n const audioGroupKeys = Object.keys(mediaGroups.AUDIO);\n for (const mediaGroup in mediaGroups.AUDIO) {\n for (const label in mediaGroups.AUDIO[mediaGroup]) {\n const properties = mediaGroups.AUDIO[mediaGroup][label];\n if (!properties.uri) {\n defaultDemuxed = false;\n }\n }\n }\n if (defaultDemuxed) {\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-demuxed'\n });\n }\n if (Object.keys(mediaGroups.SUBTITLES).length) {\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-webvtt'\n });\n }\n if (Vhs$1.Playlist.isAes(media)) {\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-aes'\n });\n }\n if (audioGroupKeys.length && Object.keys(mediaGroups.AUDIO[audioGroupKeys[0]]).length > 1) {\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-alternate-audio'\n });\n }\n if (this.useCueTags_) {\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-playlist-cue-tags'\n });\n }\n }\n shouldSwitchToMedia_(nextPlaylist) {\n const currentPlaylist = this.mainPlaylistLoader_.media() || this.mainPlaylistLoader_.pendingMedia_;\n const currentTime = this.tech_.currentTime();\n const bufferLowWaterLine = this.bufferLowWaterLine();\n const bufferHighWaterLine = this.bufferHighWaterLine();\n const buffered = this.tech_.buffered();\n return shouldSwitchToMedia({\n buffered,\n currentTime,\n currentPlaylist,\n nextPlaylist,\n bufferLowWaterLine,\n bufferHighWaterLine,\n duration: this.duration(),\n bufferBasedABR: this.bufferBasedABR,\n log: this.logger_\n });\n }\n /**\n * Register event handlers on the segment loaders. A helper function\n * for construction time.\n *\n * @private\n */\n\n setupSegmentLoaderListeners_() {\n this.mainSegmentLoader_.on('bandwidthupdate', () => {\n // Whether or not buffer based ABR or another ABR is used, on a bandwidth change it's\n // useful to check to see if a rendition switch should be made.\n this.checkABR_('bandwidthupdate');\n this.tech_.trigger('bandwidthupdate');\n });\n this.mainSegmentLoader_.on('timeout', () => {\n if (this.bufferBasedABR) {\n // If a rendition change is needed, then it would've be done on `bandwidthupdate`.\n // Here the only consideration is that for buffer based ABR there's no guarantee\n // of an immediate switch (since the bandwidth is averaged with a timeout\n // bandwidth value of 1), so force a load on the segment loader to keep it going.\n this.mainSegmentLoader_.load();\n }\n }); // `progress` events are not reliable enough of a bandwidth measure to trigger buffer\n // based ABR.\n\n if (!this.bufferBasedABR) {\n this.mainSegmentLoader_.on('progress', () => {\n this.trigger('progress');\n });\n }\n this.mainSegmentLoader_.on('error', () => {\n const error = this.mainSegmentLoader_.error();\n this.excludePlaylist({\n playlistToExclude: error.playlist,\n error\n });\n });\n this.mainSegmentLoader_.on('appenderror', () => {\n this.error = this.mainSegmentLoader_.error_;\n this.trigger('error');\n });\n this.mainSegmentLoader_.on('syncinfoupdate', () => {\n this.onSyncInfoUpdate_();\n });\n this.mainSegmentLoader_.on('timestampoffset', () => {\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-timestamp-offset'\n });\n });\n this.audioSegmentLoader_.on('syncinfoupdate', () => {\n this.onSyncInfoUpdate_();\n });\n this.audioSegmentLoader_.on('appenderror', () => {\n this.error = this.audioSegmentLoader_.error_;\n this.trigger('error');\n });\n this.mainSegmentLoader_.on('ended', () => {\n this.logger_('main segment loader ended');\n this.onEndOfStream();\n });\n this.mainSegmentLoader_.on('earlyabort', event => {\n // never try to early abort with the new ABR algorithm\n if (this.bufferBasedABR) {\n return;\n }\n this.delegateLoaders_('all', ['abort']);\n this.excludePlaylist({\n error: {\n message: 'Aborted early because there isn\\'t enough bandwidth to complete ' + 'the request without rebuffering.'\n },\n playlistExclusionDuration: ABORT_EARLY_EXCLUSION_SECONDS\n });\n });\n const updateCodecs = () => {\n if (!this.sourceUpdater_.hasCreatedSourceBuffers()) {\n return this.tryToCreateSourceBuffers_();\n }\n const codecs = this.getCodecsOrExclude_(); // no codecs means that the playlist was excluded\n\n if (!codecs) {\n return;\n }\n this.sourceUpdater_.addOrChangeSourceBuffers(codecs);\n };\n this.mainSegmentLoader_.on('trackinfo', updateCodecs);\n this.audioSegmentLoader_.on('trackinfo', updateCodecs);\n this.mainSegmentLoader_.on('fmp4', () => {\n if (!this.triggeredFmp4Usage) {\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-fmp4'\n });\n this.triggeredFmp4Usage = true;\n }\n });\n this.audioSegmentLoader_.on('fmp4', () => {\n if (!this.triggeredFmp4Usage) {\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-fmp4'\n });\n this.triggeredFmp4Usage = true;\n }\n });\n this.audioSegmentLoader_.on('ended', () => {\n this.logger_('audioSegmentLoader ended');\n this.onEndOfStream();\n });\n }\n mediaSecondsLoaded_() {\n return Math.max(this.audioSegmentLoader_.mediaSecondsLoaded + this.mainSegmentLoader_.mediaSecondsLoaded);\n }\n /**\n * Call load on our SegmentLoaders\n */\n\n load() {\n this.mainSegmentLoader_.load();\n if (this.mediaTypes_.AUDIO.activePlaylistLoader) {\n this.audioSegmentLoader_.load();\n }\n if (this.mediaTypes_.SUBTITLES.activePlaylistLoader) {\n this.subtitleSegmentLoader_.load();\n }\n }\n /**\n * Re-tune playback quality level for the current player\n * conditions. This will reset the main segment loader\n * and the next segment position to the currentTime.\n * This is good for manual quality changes.\n *\n * @private\n */\n\n fastQualityChange_(media = this.selectPlaylist()) {\n if (media === this.mainPlaylistLoader_.media()) {\n this.logger_('skipping fastQualityChange because new media is same as old');\n return;\n }\n this.switchMedia_(media, 'fast-quality'); // Reset main segment loader properties and next segment position information.\n // Don't need to reset audio as it is reset when media changes.\n // We resetLoaderProperties separately here as we want to fetch init segments if\n // necessary and ensure we're not in an ended state when we switch playlists.\n\n this.resetMainLoaderReplaceSegments();\n }\n /**\n * Sets the replaceUntil flag on the main segment soader to the buffered end\n * and resets the main segment loaders properties.\n */\n\n resetMainLoaderReplaceSegments() {\n const buffered = this.tech_.buffered();\n const bufferedEnd = buffered.end(buffered.length - 1); // Set the replace segments flag to the buffered end, this forces fetchAtBuffer\n // on the main loader to remain, false after the resetLoader call, until we have\n // replaced all content buffered ahead of the currentTime.\n\n this.mainSegmentLoader_.replaceSegmentsUntil = bufferedEnd;\n this.mainSegmentLoader_.resetLoaderProperties();\n this.mainSegmentLoader_.resetLoader();\n }\n /**\n * Begin playback.\n */\n\n play() {\n if (this.setupFirstPlay()) {\n return;\n }\n if (this.tech_.ended()) {\n this.tech_.setCurrentTime(0);\n }\n if (this.hasPlayed_) {\n this.load();\n }\n const seekable = this.tech_.seekable(); // if the viewer has paused and we fell out of the live window,\n // seek forward to the live point\n\n if (this.tech_.duration() === Infinity) {\n if (this.tech_.currentTime() < seekable.start(0)) {\n return this.tech_.setCurrentTime(seekable.end(seekable.length - 1));\n }\n }\n }\n /**\n * Seek to the latest media position if this is a live video and the\n * player and video are loaded and initialized.\n */\n\n setupFirstPlay() {\n const media = this.mainPlaylistLoader_.media(); // Check that everything is ready to begin buffering for the first call to play\n // If 1) there is no active media\n // 2) the player is paused\n // 3) the first play has already been setup\n // then exit early\n\n if (!media || this.tech_.paused() || this.hasPlayed_) {\n return false;\n } // when the video is a live stream and/or has a start time\n\n if (!media.endList || media.start) {\n const seekable = this.seekable();\n if (!seekable.length) {\n // without a seekable range, the player cannot seek to begin buffering at the\n // live or start point\n return false;\n }\n const seekableEnd = seekable.end(0);\n let startPoint = seekableEnd;\n if (media.start) {\n const offset = media.start.timeOffset;\n if (offset < 0) {\n startPoint = Math.max(seekableEnd + offset, seekable.start(0));\n } else {\n startPoint = Math.min(seekableEnd, offset);\n }\n } // trigger firstplay to inform the source handler to ignore the next seek event\n\n this.trigger('firstplay'); // seek to the live point\n\n this.tech_.setCurrentTime(startPoint);\n }\n this.hasPlayed_ = true; // we can begin loading now that everything is ready\n\n this.load();\n return true;\n }\n /**\n * handle the sourceopen event on the MediaSource\n *\n * @private\n */\n\n handleSourceOpen_() {\n // Only attempt to create the source buffer if none already exist.\n // handleSourceOpen is also called when we are \"re-opening\" a source buffer\n // after `endOfStream` has been called (in response to a seek for instance)\n this.tryToCreateSourceBuffers_(); // if autoplay is enabled, begin playback. This is duplicative of\n // code in video.js but is required because play() must be invoked\n // *after* the media source has opened.\n\n if (this.tech_.autoplay()) {\n const playPromise = this.tech_.play(); // Catch/silence error when a pause interrupts a play request\n // on browsers which return a promise\n\n if (typeof playPromise !== 'undefined' && typeof playPromise.then === 'function') {\n playPromise.then(null, e => {});\n }\n }\n this.trigger('sourceopen');\n }\n /**\n * handle the sourceended event on the MediaSource\n *\n * @private\n */\n\n handleSourceEnded_() {\n if (!this.inbandTextTracks_.metadataTrack_) {\n return;\n }\n const cues = this.inbandTextTracks_.metadataTrack_.cues;\n if (!cues || !cues.length) {\n return;\n }\n const duration = this.duration();\n cues[cues.length - 1].endTime = isNaN(duration) || Math.abs(duration) === Infinity ? Number.MAX_VALUE : duration;\n }\n /**\n * handle the durationchange event on the MediaSource\n *\n * @private\n */\n\n handleDurationChange_() {\n this.tech_.trigger('durationchange');\n }\n /**\n * Calls endOfStream on the media source when all active stream types have called\n * endOfStream\n *\n * @param {string} streamType\n * Stream type of the segment loader that called endOfStream\n * @private\n */\n\n onEndOfStream() {\n let isEndOfStream = this.mainSegmentLoader_.ended_;\n if (this.mediaTypes_.AUDIO.activePlaylistLoader) {\n const mainMediaInfo = this.mainSegmentLoader_.getCurrentMediaInfo_(); // if the audio playlist loader exists, then alternate audio is active\n\n if (!mainMediaInfo || mainMediaInfo.hasVideo) {\n // if we do not know if the main segment loader contains video yet or if we\n // definitively know the main segment loader contains video, then we need to wait\n // for both main and audio segment loaders to call endOfStream\n isEndOfStream = isEndOfStream && this.audioSegmentLoader_.ended_;\n } else {\n // otherwise just rely on the audio loader\n isEndOfStream = this.audioSegmentLoader_.ended_;\n }\n }\n if (!isEndOfStream) {\n return;\n }\n this.stopABRTimer_();\n this.sourceUpdater_.endOfStream();\n }\n /**\n * Check if a playlist has stopped being updated\n *\n * @param {Object} playlist the media playlist object\n * @return {boolean} whether the playlist has stopped being updated or not\n */\n\n stuckAtPlaylistEnd_(playlist) {\n const seekable = this.seekable();\n if (!seekable.length) {\n // playlist doesn't have enough information to determine whether we are stuck\n return false;\n }\n const expired = this.syncController_.getExpiredTime(playlist, this.duration());\n if (expired === null) {\n return false;\n } // does not use the safe live end to calculate playlist end, since we\n // don't want to say we are stuck while there is still content\n\n const absolutePlaylistEnd = Vhs$1.Playlist.playlistEnd(playlist, expired);\n const currentTime = this.tech_.currentTime();\n const buffered = this.tech_.buffered();\n if (!buffered.length) {\n // return true if the playhead reached the absolute end of the playlist\n return absolutePlaylistEnd - currentTime <= SAFE_TIME_DELTA;\n }\n const bufferedEnd = buffered.end(buffered.length - 1); // return true if there is too little buffer left and buffer has reached absolute\n // end of playlist\n\n return bufferedEnd - currentTime <= SAFE_TIME_DELTA && absolutePlaylistEnd - bufferedEnd <= SAFE_TIME_DELTA;\n }\n /**\n * Exclude a playlist for a set amount of time, making it unavailable for selection by\n * the rendition selection algorithm, then force a new playlist (rendition) selection.\n *\n * @param {Object=} playlistToExclude\n * the playlist to exclude, defaults to the currently selected playlist\n * @param {Object=} error\n * an optional error\n * @param {number=} playlistExclusionDuration\n * an optional number of seconds to exclude the playlist\n */\n\n excludePlaylist({\n playlistToExclude = this.mainPlaylistLoader_.media(),\n error = {},\n playlistExclusionDuration\n }) {\n // If the `error` was generated by the playlist loader, it will contain\n // the playlist we were trying to load (but failed) and that should be\n // excluded instead of the currently selected playlist which is likely\n // out-of-date in this scenario\n playlistToExclude = playlistToExclude || this.mainPlaylistLoader_.media();\n playlistExclusionDuration = playlistExclusionDuration || error.playlistExclusionDuration || this.playlistExclusionDuration; // If there is no current playlist, then an error occurred while we were\n // trying to load the main OR while we were disposing of the tech\n\n if (!playlistToExclude) {\n this.error = error;\n if (this.mediaSource.readyState !== 'open') {\n this.trigger('error');\n } else {\n this.sourceUpdater_.endOfStream('network');\n }\n return;\n }\n playlistToExclude.playlistErrors_++;\n const playlists = this.mainPlaylistLoader_.main.playlists;\n const enabledPlaylists = playlists.filter(isEnabled);\n const isFinalRendition = enabledPlaylists.length === 1 && enabledPlaylists[0] === playlistToExclude; // Don't exclude the only playlist unless it was excluded\n // forever\n\n if (playlists.length === 1 && playlistExclusionDuration !== Infinity) {\n videojs.log.warn(`Problem encountered with playlist ${playlistToExclude.id}. ` + 'Trying again since it is the only playlist.');\n this.tech_.trigger('retryplaylist'); // if this is a final rendition, we should delay\n\n return this.mainPlaylistLoader_.load(isFinalRendition);\n }\n if (isFinalRendition) {\n // If we're content steering, try other pathways.\n if (this.main().contentSteering) {\n const pathway = this.pathwayAttribute_(playlistToExclude); // Ignore at least 1 steering manifest refresh.\n\n const reIncludeDelay = this.contentSteeringController_.steeringManifest.ttl * 1000;\n this.contentSteeringController_.excludePathway(pathway);\n this.excludeThenChangePathway_();\n setTimeout(() => {\n this.contentSteeringController_.addAvailablePathway(pathway);\n }, reIncludeDelay);\n return;\n } // Since we're on the final non-excluded playlist, and we're about to exclude\n // it, instead of erring the player or retrying this playlist, clear out the current\n // exclusion list. This allows other playlists to be attempted in case any have been\n // fixed.\n\n let reincluded = false;\n playlists.forEach(playlist => {\n // skip current playlist which is about to be excluded\n if (playlist === playlistToExclude) {\n return;\n }\n const excludeUntil = playlist.excludeUntil; // a playlist cannot be reincluded if it wasn't excluded to begin with.\n\n if (typeof excludeUntil !== 'undefined' && excludeUntil !== Infinity) {\n reincluded = true;\n delete playlist.excludeUntil;\n }\n });\n if (reincluded) {\n videojs.log.warn('Removing other playlists from the exclusion list because the last ' + 'rendition is about to be excluded.'); // Technically we are retrying a playlist, in that we are simply retrying a previous\n // playlist. This is needed for users relying on the retryplaylist event to catch a\n // case where the player might be stuck and looping through \"dead\" playlists.\n\n this.tech_.trigger('retryplaylist');\n }\n } // Exclude this playlist\n\n let excludeUntil;\n if (playlistToExclude.playlistErrors_ > this.maxPlaylistRetries) {\n excludeUntil = Infinity;\n } else {\n excludeUntil = Date.now() + playlistExclusionDuration * 1000;\n }\n playlistToExclude.excludeUntil = excludeUntil;\n if (error.reason) {\n playlistToExclude.lastExcludeReason_ = error.reason;\n }\n this.tech_.trigger('excludeplaylist');\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-rendition-excluded'\n }); // TODO: only load a new playlist if we're excluding the current playlist\n // If this function was called with a playlist that's not the current active playlist\n // (e.g., media().id !== playlistToExclude.id),\n // then a new playlist should not be selected and loaded, as there's nothing wrong with the current playlist.\n\n const nextPlaylist = this.selectPlaylist();\n if (!nextPlaylist) {\n this.error = 'Playback cannot continue. No available working or supported playlists.';\n this.trigger('error');\n return;\n }\n const logFn = error.internal ? this.logger_ : videojs.log.warn;\n const errorMessage = error.message ? ' ' + error.message : '';\n logFn(`${error.internal ? 'Internal problem' : 'Problem'} encountered with playlist ${playlistToExclude.id}.` + `${errorMessage} Switching to playlist ${nextPlaylist.id}.`); // if audio group changed reset audio loaders\n\n if (nextPlaylist.attributes.AUDIO !== playlistToExclude.attributes.AUDIO) {\n this.delegateLoaders_('audio', ['abort', 'pause']);\n } // if subtitle group changed reset subtitle loaders\n\n if (nextPlaylist.attributes.SUBTITLES !== playlistToExclude.attributes.SUBTITLES) {\n this.delegateLoaders_('subtitle', ['abort', 'pause']);\n }\n this.delegateLoaders_('main', ['abort', 'pause']);\n const delayDuration = nextPlaylist.targetDuration / 2 * 1000 || 5 * 1000;\n const shouldDelay = typeof nextPlaylist.lastRequest === 'number' && Date.now() - nextPlaylist.lastRequest <= delayDuration; // delay if it's a final rendition or if the last refresh is sooner than half targetDuration\n\n return this.switchMedia_(nextPlaylist, 'exclude', isFinalRendition || shouldDelay);\n }\n /**\n * Pause all segment/playlist loaders\n */\n\n pauseLoading() {\n this.delegateLoaders_('all', ['abort', 'pause']);\n this.stopABRTimer_();\n }\n /**\n * Call a set of functions in order on playlist loaders, segment loaders,\n * or both types of loaders.\n *\n * @param {string} filter\n * Filter loaders that should call fnNames using a string. Can be:\n * * all - run on all loaders\n * * audio - run on all audio loaders\n * * subtitle - run on all subtitle loaders\n * * main - run on the main loaders\n *\n * @param {Array|string} fnNames\n * A string or array of function names to call.\n */\n\n delegateLoaders_(filter, fnNames) {\n const loaders = [];\n const dontFilterPlaylist = filter === 'all';\n if (dontFilterPlaylist || filter === 'main') {\n loaders.push(this.mainPlaylistLoader_);\n }\n const mediaTypes = [];\n if (dontFilterPlaylist || filter === 'audio') {\n mediaTypes.push('AUDIO');\n }\n if (dontFilterPlaylist || filter === 'subtitle') {\n mediaTypes.push('CLOSED-CAPTIONS');\n mediaTypes.push('SUBTITLES');\n }\n mediaTypes.forEach(mediaType => {\n const loader = this.mediaTypes_[mediaType] && this.mediaTypes_[mediaType].activePlaylistLoader;\n if (loader) {\n loaders.push(loader);\n }\n });\n ['main', 'audio', 'subtitle'].forEach(name => {\n const loader = this[`${name}SegmentLoader_`];\n if (loader && (filter === name || filter === 'all')) {\n loaders.push(loader);\n }\n });\n loaders.forEach(loader => fnNames.forEach(fnName => {\n if (typeof loader[fnName] === 'function') {\n loader[fnName]();\n }\n }));\n }\n /**\n * set the current time on all segment loaders\n *\n * @param {TimeRange} currentTime the current time to set\n * @return {TimeRange} the current time\n */\n\n setCurrentTime(currentTime) {\n const buffered = findRange(this.tech_.buffered(), currentTime);\n if (!(this.mainPlaylistLoader_ && this.mainPlaylistLoader_.media())) {\n // return immediately if the metadata is not ready yet\n return 0;\n } // it's clearly an edge-case but don't thrown an error if asked to\n // seek within an empty playlist\n\n if (!this.mainPlaylistLoader_.media().segments) {\n return 0;\n } // if the seek location is already buffered, continue buffering as usual\n\n if (buffered && buffered.length) {\n return currentTime;\n } // cancel outstanding requests so we begin buffering at the new\n // location\n\n this.mainSegmentLoader_.resetEverything();\n if (this.mediaTypes_.AUDIO.activePlaylistLoader) {\n this.audioSegmentLoader_.resetEverything();\n }\n if (this.mediaTypes_.SUBTITLES.activePlaylistLoader) {\n this.subtitleSegmentLoader_.resetEverything();\n } // start segment loader loading in case they are paused\n\n this.load();\n }\n /**\n * get the current duration\n *\n * @return {TimeRange} the duration\n */\n\n duration() {\n if (!this.mainPlaylistLoader_) {\n return 0;\n }\n const media = this.mainPlaylistLoader_.media();\n if (!media) {\n // no playlists loaded yet, so can't determine a duration\n return 0;\n } // Don't rely on the media source for duration in the case of a live playlist since\n // setting the native MediaSource's duration to infinity ends up with consequences to\n // seekable behavior. See https://github.com/w3c/media-source/issues/5 for details.\n //\n // This is resolved in the spec by https://github.com/w3c/media-source/pull/92,\n // however, few browsers have support for setLiveSeekableRange()\n // https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/setLiveSeekableRange\n //\n // Until a time when the duration of the media source can be set to infinity, and a\n // seekable range specified across browsers, just return Infinity.\n\n if (!media.endList) {\n return Infinity;\n } // Since this is a VOD video, it is safe to rely on the media source's duration (if\n // available). If it's not available, fall back to a playlist-calculated estimate.\n\n if (this.mediaSource) {\n return this.mediaSource.duration;\n }\n return Vhs$1.Playlist.duration(media);\n }\n /**\n * check the seekable range\n *\n * @return {TimeRange} the seekable range\n */\n\n seekable() {\n return this.seekable_;\n }\n onSyncInfoUpdate_() {\n let audioSeekable; // TODO check for creation of both source buffers before updating seekable\n //\n // A fix was made to this function where a check for\n // this.sourceUpdater_.hasCreatedSourceBuffers\n // was added to ensure that both source buffers were created before seekable was\n // updated. However, it originally had a bug where it was checking for a true and\n // returning early instead of checking for false. Setting it to check for false to\n // return early though created other issues. A call to play() would check for seekable\n // end without verifying that a seekable range was present. In addition, even checking\n // for that didn't solve some issues, as handleFirstPlay is sometimes worked around\n // due to a media update calling load on the segment loaders, skipping a seek to live,\n // thereby starting live streams at the beginning of the stream rather than at the end.\n //\n // This conditional should be fixed to wait for the creation of two source buffers at\n // the same time as the other sections of code are fixed to properly seek to live and\n // not throw an error due to checking for a seekable end when no seekable range exists.\n //\n // For now, fall back to the older behavior, with the understanding that the seekable\n // range may not be completely correct, leading to a suboptimal initial live point.\n\n if (!this.mainPlaylistLoader_) {\n return;\n }\n let media = this.mainPlaylistLoader_.media();\n if (!media) {\n return;\n }\n let expired = this.syncController_.getExpiredTime(media, this.duration());\n if (expired === null) {\n // not enough information to update seekable\n return;\n }\n const main = this.mainPlaylistLoader_.main;\n const mainSeekable = Vhs$1.Playlist.seekable(media, expired, Vhs$1.Playlist.liveEdgeDelay(main, media));\n if (mainSeekable.length === 0) {\n return;\n }\n if (this.mediaTypes_.AUDIO.activePlaylistLoader) {\n media = this.mediaTypes_.AUDIO.activePlaylistLoader.media();\n expired = this.syncController_.getExpiredTime(media, this.duration());\n if (expired === null) {\n return;\n }\n audioSeekable = Vhs$1.Playlist.seekable(media, expired, Vhs$1.Playlist.liveEdgeDelay(main, media));\n if (audioSeekable.length === 0) {\n return;\n }\n }\n let oldEnd;\n let oldStart;\n if (this.seekable_ && this.seekable_.length) {\n oldEnd = this.seekable_.end(0);\n oldStart = this.seekable_.start(0);\n }\n if (!audioSeekable) {\n // seekable has been calculated based on buffering video data so it\n // can be returned directly\n this.seekable_ = mainSeekable;\n } else if (audioSeekable.start(0) > mainSeekable.end(0) || mainSeekable.start(0) > audioSeekable.end(0)) {\n // seekables are pretty far off, rely on main\n this.seekable_ = mainSeekable;\n } else {\n this.seekable_ = createTimeRanges([[audioSeekable.start(0) > mainSeekable.start(0) ? audioSeekable.start(0) : mainSeekable.start(0), audioSeekable.end(0) < mainSeekable.end(0) ? audioSeekable.end(0) : mainSeekable.end(0)]]);\n } // seekable is the same as last time\n\n if (this.seekable_ && this.seekable_.length) {\n if (this.seekable_.end(0) === oldEnd && this.seekable_.start(0) === oldStart) {\n return;\n }\n }\n this.logger_(`seekable updated [${printableRange(this.seekable_)}]`);\n this.tech_.trigger('seekablechanged');\n }\n /**\n * Update the player duration\n */\n\n updateDuration(isLive) {\n if (this.updateDuration_) {\n this.mediaSource.removeEventListener('sourceopen', this.updateDuration_);\n this.updateDuration_ = null;\n }\n if (this.mediaSource.readyState !== 'open') {\n this.updateDuration_ = this.updateDuration.bind(this, isLive);\n this.mediaSource.addEventListener('sourceopen', this.updateDuration_);\n return;\n }\n if (isLive) {\n const seekable = this.seekable();\n if (!seekable.length) {\n return;\n } // Even in the case of a live playlist, the native MediaSource's duration should not\n // be set to Infinity (even though this would be expected for a live playlist), since\n // setting the native MediaSource's duration to infinity ends up with consequences to\n // seekable behavior. See https://github.com/w3c/media-source/issues/5 for details.\n //\n // This is resolved in the spec by https://github.com/w3c/media-source/pull/92,\n // however, few browsers have support for setLiveSeekableRange()\n // https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/setLiveSeekableRange\n //\n // Until a time when the duration of the media source can be set to infinity, and a\n // seekable range specified across browsers, the duration should be greater than or\n // equal to the last possible seekable value.\n // MediaSource duration starts as NaN\n // It is possible (and probable) that this case will never be reached for many\n // sources, since the MediaSource reports duration as the highest value without\n // accounting for timestamp offset. For example, if the timestamp offset is -100 and\n // we buffered times 0 to 100 with real times of 100 to 200, even though current\n // time will be between 0 and 100, the native media source may report the duration\n // as 200. However, since we report duration separate from the media source (as\n // Infinity), and as long as the native media source duration value is greater than\n // our reported seekable range, seeks will work as expected. The large number as\n // duration for live is actually a strategy used by some players to work around the\n // issue of live seekable ranges cited above.\n\n if (isNaN(this.mediaSource.duration) || this.mediaSource.duration < seekable.end(seekable.length - 1)) {\n this.sourceUpdater_.setDuration(seekable.end(seekable.length - 1));\n }\n return;\n }\n const buffered = this.tech_.buffered();\n let duration = Vhs$1.Playlist.duration(this.mainPlaylistLoader_.media());\n if (buffered.length > 0) {\n duration = Math.max(duration, buffered.end(buffered.length - 1));\n }\n if (this.mediaSource.duration !== duration) {\n this.sourceUpdater_.setDuration(duration);\n }\n }\n /**\n * dispose of the PlaylistController and everything\n * that it controls\n */\n\n dispose() {\n this.trigger('dispose');\n this.decrypter_.terminate();\n this.mainPlaylistLoader_.dispose();\n this.mainSegmentLoader_.dispose();\n this.contentSteeringController_.dispose();\n if (this.loadOnPlay_) {\n this.tech_.off('play', this.loadOnPlay_);\n }\n ['AUDIO', 'SUBTITLES'].forEach(type => {\n const groups = this.mediaTypes_[type].groups;\n for (const id in groups) {\n groups[id].forEach(group => {\n if (group.playlistLoader) {\n group.playlistLoader.dispose();\n }\n });\n }\n });\n this.audioSegmentLoader_.dispose();\n this.subtitleSegmentLoader_.dispose();\n this.sourceUpdater_.dispose();\n this.timelineChangeController_.dispose();\n this.stopABRTimer_();\n if (this.updateDuration_) {\n this.mediaSource.removeEventListener('sourceopen', this.updateDuration_);\n }\n this.mediaSource.removeEventListener('durationchange', this.handleDurationChange_); // load the media source into the player\n\n this.mediaSource.removeEventListener('sourceopen', this.handleSourceOpen_);\n this.mediaSource.removeEventListener('sourceended', this.handleSourceEnded_);\n this.off();\n }\n /**\n * return the main playlist object if we have one\n *\n * @return {Object} the main playlist object that we parsed\n */\n\n main() {\n return this.mainPlaylistLoader_.main;\n }\n /**\n * return the currently selected playlist\n *\n * @return {Object} the currently selected playlist object that we parsed\n */\n\n media() {\n // playlist loader will not return media if it has not been fully loaded\n return this.mainPlaylistLoader_.media() || this.initialMedia_;\n }\n areMediaTypesKnown_() {\n const usingAudioLoader = !!this.mediaTypes_.AUDIO.activePlaylistLoader;\n const hasMainMediaInfo = !!this.mainSegmentLoader_.getCurrentMediaInfo_(); // if we are not using an audio loader, then we have audio media info\n // otherwise check on the segment loader.\n\n const hasAudioMediaInfo = !usingAudioLoader ? true : !!this.audioSegmentLoader_.getCurrentMediaInfo_(); // one or both loaders has not loaded sufficently to get codecs\n\n if (!hasMainMediaInfo || !hasAudioMediaInfo) {\n return false;\n }\n return true;\n }\n getCodecsOrExclude_() {\n const media = {\n main: this.mainSegmentLoader_.getCurrentMediaInfo_() || {},\n audio: this.audioSegmentLoader_.getCurrentMediaInfo_() || {}\n };\n const playlist = this.mainSegmentLoader_.getPendingSegmentPlaylist() || this.media(); // set \"main\" media equal to video\n\n media.video = media.main;\n const playlistCodecs = codecsForPlaylist(this.main(), playlist);\n const codecs = {};\n const usingAudioLoader = !!this.mediaTypes_.AUDIO.activePlaylistLoader;\n if (media.main.hasVideo) {\n codecs.video = playlistCodecs.video || media.main.videoCodec || DEFAULT_VIDEO_CODEC;\n }\n if (media.main.isMuxed) {\n codecs.video += `,${playlistCodecs.audio || media.main.audioCodec || DEFAULT_AUDIO_CODEC}`;\n }\n if (media.main.hasAudio && !media.main.isMuxed || media.audio.hasAudio || usingAudioLoader) {\n codecs.audio = playlistCodecs.audio || media.main.audioCodec || media.audio.audioCodec || DEFAULT_AUDIO_CODEC; // set audio isFmp4 so we use the correct \"supports\" function below\n\n media.audio.isFmp4 = media.main.hasAudio && !media.main.isMuxed ? media.main.isFmp4 : media.audio.isFmp4;\n } // no codecs, no playback.\n\n if (!codecs.audio && !codecs.video) {\n this.excludePlaylist({\n playlistToExclude: playlist,\n error: {\n message: 'Could not determine codecs for playlist.'\n },\n playlistExclusionDuration: Infinity\n });\n return;\n } // fmp4 relies on browser support, while ts relies on muxer support\n\n const supportFunction = (isFmp4, codec) => isFmp4 ? browserSupportsCodec(codec) : muxerSupportsCodec(codec);\n const unsupportedCodecs = {};\n let unsupportedAudio;\n ['video', 'audio'].forEach(function (type) {\n if (codecs.hasOwnProperty(type) && !supportFunction(media[type].isFmp4, codecs[type])) {\n const supporter = media[type].isFmp4 ? 'browser' : 'muxer';\n unsupportedCodecs[supporter] = unsupportedCodecs[supporter] || [];\n unsupportedCodecs[supporter].push(codecs[type]);\n if (type === 'audio') {\n unsupportedAudio = supporter;\n }\n }\n });\n if (usingAudioLoader && unsupportedAudio && playlist.attributes.AUDIO) {\n const audioGroup = playlist.attributes.AUDIO;\n this.main().playlists.forEach(variant => {\n const variantAudioGroup = variant.attributes && variant.attributes.AUDIO;\n if (variantAudioGroup === audioGroup && variant !== playlist) {\n variant.excludeUntil = Infinity;\n }\n });\n this.logger_(`excluding audio group ${audioGroup} as ${unsupportedAudio} does not support codec(s): \"${codecs.audio}\"`);\n } // if we have any unsupported codecs exclude this playlist.\n\n if (Object.keys(unsupportedCodecs).length) {\n const message = Object.keys(unsupportedCodecs).reduce((acc, supporter) => {\n if (acc) {\n acc += ', ';\n }\n acc += `${supporter} does not support codec(s): \"${unsupportedCodecs[supporter].join(',')}\"`;\n return acc;\n }, '') + '.';\n this.excludePlaylist({\n playlistToExclude: playlist,\n error: {\n internal: true,\n message\n },\n playlistExclusionDuration: Infinity\n });\n return;\n } // check if codec switching is happening\n\n if (this.sourceUpdater_.hasCreatedSourceBuffers() && !this.sourceUpdater_.canChangeType()) {\n const switchMessages = [];\n ['video', 'audio'].forEach(type => {\n const newCodec = (parseCodecs(this.sourceUpdater_.codecs[type] || '')[0] || {}).type;\n const oldCodec = (parseCodecs(codecs[type] || '')[0] || {}).type;\n if (newCodec && oldCodec && newCodec.toLowerCase() !== oldCodec.toLowerCase()) {\n switchMessages.push(`\"${this.sourceUpdater_.codecs[type]}\" -> \"${codecs[type]}\"`);\n }\n });\n if (switchMessages.length) {\n this.excludePlaylist({\n playlistToExclude: playlist,\n error: {\n message: `Codec switching not supported: ${switchMessages.join(', ')}.`,\n internal: true\n },\n playlistExclusionDuration: Infinity\n });\n return;\n }\n } // TODO: when using the muxer shouldn't we just return\n // the codecs that the muxer outputs?\n\n return codecs;\n }\n /**\n * Create source buffers and exlude any incompatible renditions.\n *\n * @private\n */\n\n tryToCreateSourceBuffers_() {\n // media source is not ready yet or sourceBuffers are already\n // created.\n if (this.mediaSource.readyState !== 'open' || this.sourceUpdater_.hasCreatedSourceBuffers()) {\n return;\n }\n if (!this.areMediaTypesKnown_()) {\n return;\n }\n const codecs = this.getCodecsOrExclude_(); // no codecs means that the playlist was excluded\n\n if (!codecs) {\n return;\n }\n this.sourceUpdater_.createSourceBuffers(codecs);\n const codecString = [codecs.video, codecs.audio].filter(Boolean).join(',');\n this.excludeIncompatibleVariants_(codecString);\n }\n /**\n * Excludes playlists with codecs that are unsupported by the muxer and browser.\n */\n\n excludeUnsupportedVariants_() {\n const playlists = this.main().playlists;\n const ids = []; // TODO: why don't we have a property to loop through all\n // playlist? Why did we ever mix indexes and keys?\n\n Object.keys(playlists).forEach(key => {\n const variant = playlists[key]; // check if we already processed this playlist.\n\n if (ids.indexOf(variant.id) !== -1) {\n return;\n }\n ids.push(variant.id);\n const codecs = codecsForPlaylist(this.main, variant);\n const unsupported = [];\n if (codecs.audio && !muxerSupportsCodec(codecs.audio) && !browserSupportsCodec(codecs.audio)) {\n unsupported.push(`audio codec ${codecs.audio}`);\n }\n if (codecs.video && !muxerSupportsCodec(codecs.video) && !browserSupportsCodec(codecs.video)) {\n unsupported.push(`video codec ${codecs.video}`);\n }\n if (codecs.text && codecs.text === 'stpp.ttml.im1t') {\n unsupported.push(`text codec ${codecs.text}`);\n }\n if (unsupported.length) {\n variant.excludeUntil = Infinity;\n this.logger_(`excluding ${variant.id} for unsupported: ${unsupported.join(', ')}`);\n }\n });\n }\n /**\n * Exclude playlists that are known to be codec or\n * stream-incompatible with the SourceBuffer configuration. For\n * instance, Media Source Extensions would cause the video element to\n * stall waiting for video data if you switched from a variant with\n * video and audio to an audio-only one.\n *\n * @param {Object} media a media playlist compatible with the current\n * set of SourceBuffers. Variants in the current main playlist that\n * do not appear to have compatible codec or stream configurations\n * will be excluded from the default playlist selection algorithm\n * indefinitely.\n * @private\n */\n\n excludeIncompatibleVariants_(codecString) {\n const ids = [];\n const playlists = this.main().playlists;\n const codecs = unwrapCodecList(parseCodecs(codecString));\n const codecCount_ = codecCount(codecs);\n const videoDetails = codecs.video && parseCodecs(codecs.video)[0] || null;\n const audioDetails = codecs.audio && parseCodecs(codecs.audio)[0] || null;\n Object.keys(playlists).forEach(key => {\n const variant = playlists[key]; // check if we already processed this playlist.\n // or it if it is already excluded forever.\n\n if (ids.indexOf(variant.id) !== -1 || variant.excludeUntil === Infinity) {\n return;\n }\n ids.push(variant.id);\n const exclusionReasons = []; // get codecs from the playlist for this variant\n\n const variantCodecs = codecsForPlaylist(this.mainPlaylistLoader_.main, variant);\n const variantCodecCount = codecCount(variantCodecs); // if no codecs are listed, we cannot determine that this\n // variant is incompatible. Wait for mux.js to probe\n\n if (!variantCodecs.audio && !variantCodecs.video) {\n return;\n } // TODO: we can support this by removing the\n // old media source and creating a new one, but it will take some work.\n // The number of streams cannot change\n\n if (variantCodecCount !== codecCount_) {\n exclusionReasons.push(`codec count \"${variantCodecCount}\" !== \"${codecCount_}\"`);\n } // only exclude playlists by codec change, if codecs cannot switch\n // during playback.\n\n if (!this.sourceUpdater_.canChangeType()) {\n const variantVideoDetails = variantCodecs.video && parseCodecs(variantCodecs.video)[0] || null;\n const variantAudioDetails = variantCodecs.audio && parseCodecs(variantCodecs.audio)[0] || null; // the video codec cannot change\n\n if (variantVideoDetails && videoDetails && variantVideoDetails.type.toLowerCase() !== videoDetails.type.toLowerCase()) {\n exclusionReasons.push(`video codec \"${variantVideoDetails.type}\" !== \"${videoDetails.type}\"`);\n } // the audio codec cannot change\n\n if (variantAudioDetails && audioDetails && variantAudioDetails.type.toLowerCase() !== audioDetails.type.toLowerCase()) {\n exclusionReasons.push(`audio codec \"${variantAudioDetails.type}\" !== \"${audioDetails.type}\"`);\n }\n }\n if (exclusionReasons.length) {\n variant.excludeUntil = Infinity;\n this.logger_(`excluding ${variant.id}: ${exclusionReasons.join(' && ')}`);\n }\n });\n }\n updateAdCues_(media) {\n let offset = 0;\n const seekable = this.seekable();\n if (seekable.length) {\n offset = seekable.start(0);\n }\n updateAdCues(media, this.cueTagsTrack_, offset);\n }\n /**\n * Calculates the desired forward buffer length based on current time\n *\n * @return {number} Desired forward buffer length in seconds\n */\n\n goalBufferLength() {\n const currentTime = this.tech_.currentTime();\n const initial = Config.GOAL_BUFFER_LENGTH;\n const rate = Config.GOAL_BUFFER_LENGTH_RATE;\n const max = Math.max(initial, Config.MAX_GOAL_BUFFER_LENGTH);\n return Math.min(initial + currentTime * rate, max);\n }\n /**\n * Calculates the desired buffer low water line based on current time\n *\n * @return {number} Desired buffer low water line in seconds\n */\n\n bufferLowWaterLine() {\n const currentTime = this.tech_.currentTime();\n const initial = Config.BUFFER_LOW_WATER_LINE;\n const rate = Config.BUFFER_LOW_WATER_LINE_RATE;\n const max = Math.max(initial, Config.MAX_BUFFER_LOW_WATER_LINE);\n const newMax = Math.max(initial, Config.EXPERIMENTAL_MAX_BUFFER_LOW_WATER_LINE);\n return Math.min(initial + currentTime * rate, this.bufferBasedABR ? newMax : max);\n }\n bufferHighWaterLine() {\n return Config.BUFFER_HIGH_WATER_LINE;\n }\n addDateRangesToTextTrack_(dateRanges) {\n createMetadataTrackIfNotExists(this.inbandTextTracks_, 'com.apple.streaming', this.tech_);\n addDateRangeMetadata({\n inbandTextTracks: this.inbandTextTracks_,\n dateRanges\n });\n }\n addMetadataToTextTrack(dispatchType, metadataArray, videoDuration) {\n const timestampOffset = this.sourceUpdater_.videoBuffer ? this.sourceUpdater_.videoTimestampOffset() : this.sourceUpdater_.audioTimestampOffset(); // There's potentially an issue where we could double add metadata if there's a muxed\n // audio/video source with a metadata track, and an alt audio with a metadata track.\n // However, this probably won't happen, and if it does it can be handled then.\n\n createMetadataTrackIfNotExists(this.inbandTextTracks_, dispatchType, this.tech_);\n addMetadata({\n inbandTextTracks: this.inbandTextTracks_,\n metadataArray,\n timestampOffset,\n videoDuration\n });\n }\n pathwayAttribute_(playlist) {\n return playlist.attributes['PATHWAY-ID'] || playlist.attributes.serviceLocation;\n }\n /**\n * Initialize content steering listeners and apply the tag properties.\n */\n\n initContentSteeringController_() {\n const initialMain = this.main();\n if (!initialMain.contentSteering) {\n return;\n }\n const updateSteeringValues = main => {\n for (const playlist of main.playlists) {\n this.contentSteeringController_.addAvailablePathway(this.pathwayAttribute_(playlist));\n }\n this.contentSteeringController_.assignTagProperties(main.uri, main.contentSteering);\n };\n updateSteeringValues(initialMain);\n this.contentSteeringController_.on('content-steering', this.excludeThenChangePathway_.bind(this)); // We need to ensure we update the content steering values when a new\n // manifest is loaded in live DASH with content steering.\n\n if (this.sourceType_ === 'dash') {\n this.mainPlaylistLoader_.on('mediaupdatetimeout', () => {\n this.mainPlaylistLoader_.refreshMedia_(this.mainPlaylistLoader_.media().id); // clear past values\n\n this.contentSteeringController_.abort();\n this.contentSteeringController_.clearTTLTimeout_();\n this.contentSteeringController_.clearAvailablePathways();\n updateSteeringValues(this.main());\n });\n } // Do this at startup only, after that the steering requests are managed by the Content Steering class.\n // DASH queryBeforeStart scenarios will be handled by the Content Steering class.\n\n if (!this.contentSteeringController_.queryBeforeStart) {\n this.tech_.one('canplay', () => {\n this.contentSteeringController_.requestSteeringManifest();\n });\n }\n }\n /**\n * Simple exclude and change playlist logic for content steering.\n */\n\n excludeThenChangePathway_() {\n const currentPathway = this.contentSteeringController_.getPathway();\n if (!currentPathway) {\n return;\n }\n const main = this.main();\n const playlists = main.playlists;\n const ids = new Set();\n let didEnablePlaylists = false;\n Object.keys(playlists).forEach(key => {\n const variant = playlists[key];\n const pathwayId = this.pathwayAttribute_(variant);\n const differentPathwayId = pathwayId && currentPathway !== pathwayId;\n const steeringExclusion = variant.excludeUntil === Infinity && variant.lastExcludeReason_ === 'content-steering';\n if (steeringExclusion && !differentPathwayId) {\n delete variant.excludeUntil;\n delete variant.lastExcludeReason_;\n didEnablePlaylists = true;\n }\n const noExcludeUntil = !variant.excludeUntil && variant.excludeUntil !== Infinity;\n const shouldExclude = !ids.has(variant.id) && differentPathwayId && noExcludeUntil;\n if (!shouldExclude) {\n return;\n }\n ids.add(variant.id);\n variant.excludeUntil = Infinity;\n variant.lastExcludeReason_ = 'content-steering'; // TODO: kind of spammy, maybe move this.\n\n this.logger_(`excluding ${variant.id} for ${variant.lastExcludeReason_}`);\n });\n if (this.contentSteeringController_.manifestType_ === 'DASH') {\n Object.keys(this.mediaTypes_).forEach(key => {\n const type = this.mediaTypes_[key];\n if (type.activePlaylistLoader) {\n const currentPlaylist = type.activePlaylistLoader.media_; // Check if the current media playlist matches the current CDN\n\n if (currentPlaylist && currentPlaylist.attributes.serviceLocation !== currentPathway) {\n didEnablePlaylists = true;\n }\n }\n });\n }\n if (didEnablePlaylists) {\n this.changeSegmentPathway_();\n }\n }\n /**\n * Changes the current playlists for audio, video and subtitles after a new pathway\n * is chosen from content steering.\n */\n\n changeSegmentPathway_() {\n const nextPlaylist = this.selectPlaylist();\n this.pauseLoading(); // Switch audio and text track playlists if necessary in DASH\n\n if (this.contentSteeringController_.manifestType_ === 'DASH') {\n this.switchMediaForDASHContentSteering_();\n }\n this.switchMedia_(nextPlaylist, 'content-steering');\n }\n}\n\n/**\n * Returns a function that acts as the Enable/disable playlist function.\n *\n * @param {PlaylistLoader} loader - The main playlist loader\n * @param {string} playlistID - id of the playlist\n * @param {Function} changePlaylistFn - A function to be called after a\n * playlist's enabled-state has been changed. Will NOT be called if a\n * playlist's enabled-state is unchanged\n * @param {boolean=} enable - Value to set the playlist enabled-state to\n * or if undefined returns the current enabled-state for the playlist\n * @return {Function} Function for setting/getting enabled\n */\n\nconst enableFunction = (loader, playlistID, changePlaylistFn) => enable => {\n const playlist = loader.main.playlists[playlistID];\n const incompatible = isIncompatible(playlist);\n const currentlyEnabled = isEnabled(playlist);\n if (typeof enable === 'undefined') {\n return currentlyEnabled;\n }\n if (enable) {\n delete playlist.disabled;\n } else {\n playlist.disabled = true;\n }\n if (enable !== currentlyEnabled && !incompatible) {\n // Ensure the outside world knows about our changes\n changePlaylistFn();\n if (enable) {\n loader.trigger('renditionenabled');\n } else {\n loader.trigger('renditiondisabled');\n }\n }\n return enable;\n};\n/**\n * The representation object encapsulates the publicly visible information\n * in a media playlist along with a setter/getter-type function (enabled)\n * for changing the enabled-state of a particular playlist entry\n *\n * @class Representation\n */\n\nclass Representation {\n constructor(vhsHandler, playlist, id) {\n const {\n playlistController_: pc\n } = vhsHandler;\n const qualityChangeFunction = pc.fastQualityChange_.bind(pc); // some playlist attributes are optional\n\n if (playlist.attributes) {\n const resolution = playlist.attributes.RESOLUTION;\n this.width = resolution && resolution.width;\n this.height = resolution && resolution.height;\n this.bandwidth = playlist.attributes.BANDWIDTH;\n this.frameRate = playlist.attributes['FRAME-RATE'];\n }\n this.codecs = codecsForPlaylist(pc.main(), playlist);\n this.playlist = playlist; // The id is simply the ordinality of the media playlist\n // within the main playlist\n\n this.id = id; // Partially-apply the enableFunction to create a playlist-\n // specific variant\n\n this.enabled = enableFunction(vhsHandler.playlists, playlist.id, qualityChangeFunction);\n }\n}\n/**\n * A mixin function that adds the `representations` api to an instance\n * of the VhsHandler class\n *\n * @param {VhsHandler} vhsHandler - An instance of VhsHandler to add the\n * representation API into\n */\n\nconst renditionSelectionMixin = function (vhsHandler) {\n // Add a single API-specific function to the VhsHandler instance\n vhsHandler.representations = () => {\n const main = vhsHandler.playlistController_.main();\n const playlists = isAudioOnly(main) ? vhsHandler.playlistController_.getAudioTrackPlaylists_() : main.playlists;\n if (!playlists) {\n return [];\n }\n return playlists.filter(media => !isIncompatible(media)).map((e, i) => new Representation(vhsHandler, e, e.id));\n };\n};\n\n/**\n * @file playback-watcher.js\n *\n * Playback starts, and now my watch begins. It shall not end until my death. I shall\n * take no wait, hold no uncleared timeouts, father no bad seeks. I shall wear no crowns\n * and win no glory. I shall live and die at my post. I am the corrector of the underflow.\n * I am the watcher of gaps. I am the shield that guards the realms of seekable. I pledge\n * my life and honor to the Playback Watch, for this Player and all the Players to come.\n */\n\nconst timerCancelEvents = ['seeking', 'seeked', 'pause', 'playing', 'error'];\n/**\n * @class PlaybackWatcher\n */\n\nclass PlaybackWatcher {\n /**\n * Represents an PlaybackWatcher object.\n *\n * @class\n * @param {Object} options an object that includes the tech and settings\n */\n constructor(options) {\n this.playlistController_ = options.playlistController;\n this.tech_ = options.tech;\n this.seekable = options.seekable;\n this.allowSeeksWithinUnsafeLiveWindow = options.allowSeeksWithinUnsafeLiveWindow;\n this.liveRangeSafeTimeDelta = options.liveRangeSafeTimeDelta;\n this.media = options.media;\n this.consecutiveUpdates = 0;\n this.lastRecordedTime = null;\n this.checkCurrentTimeTimeout_ = null;\n this.logger_ = logger('PlaybackWatcher');\n this.logger_('initialize');\n const playHandler = () => this.monitorCurrentTime_();\n const canPlayHandler = () => this.monitorCurrentTime_();\n const waitingHandler = () => this.techWaiting_();\n const cancelTimerHandler = () => this.resetTimeUpdate_();\n const pc = this.playlistController_;\n const loaderTypes = ['main', 'subtitle', 'audio'];\n const loaderChecks = {};\n loaderTypes.forEach(type => {\n loaderChecks[type] = {\n reset: () => this.resetSegmentDownloads_(type),\n updateend: () => this.checkSegmentDownloads_(type)\n };\n pc[`${type}SegmentLoader_`].on('appendsdone', loaderChecks[type].updateend); // If a rendition switch happens during a playback stall where the buffer\n // isn't changing we want to reset. We cannot assume that the new rendition\n // will also be stalled, until after new appends.\n\n pc[`${type}SegmentLoader_`].on('playlistupdate', loaderChecks[type].reset); // Playback stalls should not be detected right after seeking.\n // This prevents one segment playlists (single vtt or single segment content)\n // from being detected as stalling. As the buffer will not change in those cases, since\n // the buffer is the entire video duration.\n\n this.tech_.on(['seeked', 'seeking'], loaderChecks[type].reset);\n });\n /**\n * We check if a seek was into a gap through the following steps:\n * 1. We get a seeking event and we do not get a seeked event. This means that\n * a seek was attempted but not completed.\n * 2. We run `fixesBadSeeks_` on segment loader appends. This means that we already\n * removed everything from our buffer and appended a segment, and should be ready\n * to check for gaps.\n */\n\n const setSeekingHandlers = fn => {\n ['main', 'audio'].forEach(type => {\n pc[`${type}SegmentLoader_`][fn]('appended', this.seekingAppendCheck_);\n });\n };\n this.seekingAppendCheck_ = () => {\n if (this.fixesBadSeeks_()) {\n this.consecutiveUpdates = 0;\n this.lastRecordedTime = this.tech_.currentTime();\n setSeekingHandlers('off');\n }\n };\n this.clearSeekingAppendCheck_ = () => setSeekingHandlers('off');\n this.watchForBadSeeking_ = () => {\n this.clearSeekingAppendCheck_();\n setSeekingHandlers('on');\n };\n this.tech_.on('seeked', this.clearSeekingAppendCheck_);\n this.tech_.on('seeking', this.watchForBadSeeking_);\n this.tech_.on('waiting', waitingHandler);\n this.tech_.on(timerCancelEvents, cancelTimerHandler);\n this.tech_.on('canplay', canPlayHandler);\n /*\n An edge case exists that results in gaps not being skipped when they exist at the beginning of a stream. This case\n is surfaced in one of two ways:\n 1) The `waiting` event is fired before the player has buffered content, making it impossible\n to find or skip the gap. The `waiting` event is followed by a `play` event. On first play\n we can check if playback is stalled due to a gap, and skip the gap if necessary.\n 2) A source with a gap at the beginning of the stream is loaded programatically while the player\n is in a playing state. To catch this case, it's important that our one-time play listener is setup\n even if the player is in a playing state\n */\n\n this.tech_.one('play', playHandler); // Define the dispose function to clean up our events\n\n this.dispose = () => {\n this.clearSeekingAppendCheck_();\n this.logger_('dispose');\n this.tech_.off('waiting', waitingHandler);\n this.tech_.off(timerCancelEvents, cancelTimerHandler);\n this.tech_.off('canplay', canPlayHandler);\n this.tech_.off('play', playHandler);\n this.tech_.off('seeking', this.watchForBadSeeking_);\n this.tech_.off('seeked', this.clearSeekingAppendCheck_);\n loaderTypes.forEach(type => {\n pc[`${type}SegmentLoader_`].off('appendsdone', loaderChecks[type].updateend);\n pc[`${type}SegmentLoader_`].off('playlistupdate', loaderChecks[type].reset);\n this.tech_.off(['seeked', 'seeking'], loaderChecks[type].reset);\n });\n if (this.checkCurrentTimeTimeout_) {\n window$1.clearTimeout(this.checkCurrentTimeTimeout_);\n }\n this.resetTimeUpdate_();\n };\n }\n /**\n * Periodically check current time to see if playback stopped\n *\n * @private\n */\n\n monitorCurrentTime_() {\n this.checkCurrentTime_();\n if (this.checkCurrentTimeTimeout_) {\n window$1.clearTimeout(this.checkCurrentTimeTimeout_);\n } // 42 = 24 fps // 250 is what Webkit uses // FF uses 15\n\n this.checkCurrentTimeTimeout_ = window$1.setTimeout(this.monitorCurrentTime_.bind(this), 250);\n }\n /**\n * Reset stalled download stats for a specific type of loader\n *\n * @param {string} type\n * The segment loader type to check.\n *\n * @listens SegmentLoader#playlistupdate\n * @listens Tech#seeking\n * @listens Tech#seeked\n */\n\n resetSegmentDownloads_(type) {\n const loader = this.playlistController_[`${type}SegmentLoader_`];\n if (this[`${type}StalledDownloads_`] > 0) {\n this.logger_(`resetting possible stalled download count for ${type} loader`);\n }\n this[`${type}StalledDownloads_`] = 0;\n this[`${type}Buffered_`] = loader.buffered_();\n }\n /**\n * Checks on every segment `appendsdone` to see\n * if segment appends are making progress. If they are not\n * and we are still downloading bytes. We exclude the playlist.\n *\n * @param {string} type\n * The segment loader type to check.\n *\n * @listens SegmentLoader#appendsdone\n */\n\n checkSegmentDownloads_(type) {\n const pc = this.playlistController_;\n const loader = pc[`${type}SegmentLoader_`];\n const buffered = loader.buffered_();\n const isBufferedDifferent = isRangeDifferent(this[`${type}Buffered_`], buffered);\n this[`${type}Buffered_`] = buffered; // if another watcher is going to fix the issue or\n // the buffered value for this loader changed\n // appends are working\n\n if (isBufferedDifferent) {\n this.resetSegmentDownloads_(type);\n return;\n }\n this[`${type}StalledDownloads_`]++;\n this.logger_(`found #${this[`${type}StalledDownloads_`]} ${type} appends that did not increase buffer (possible stalled download)`, {\n playlistId: loader.playlist_ && loader.playlist_.id,\n buffered: timeRangesToArray(buffered)\n }); // after 10 possibly stalled appends with no reset, exclude\n\n if (this[`${type}StalledDownloads_`] < 10) {\n return;\n }\n this.logger_(`${type} loader stalled download exclusion`);\n this.resetSegmentDownloads_(type);\n this.tech_.trigger({\n type: 'usage',\n name: `vhs-${type}-download-exclusion`\n });\n if (type === 'subtitle') {\n return;\n } // TODO: should we exclude audio tracks rather than main tracks\n // when type is audio?\n\n pc.excludePlaylist({\n error: {\n message: `Excessive ${type} segment downloading detected.`\n },\n playlistExclusionDuration: Infinity\n });\n }\n /**\n * The purpose of this function is to emulate the \"waiting\" event on\n * browsers that do not emit it when they are waiting for more\n * data to continue playback\n *\n * @private\n */\n\n checkCurrentTime_() {\n if (this.tech_.paused() || this.tech_.seeking()) {\n return;\n }\n const currentTime = this.tech_.currentTime();\n const buffered = this.tech_.buffered();\n if (this.lastRecordedTime === currentTime && (!buffered.length || currentTime + SAFE_TIME_DELTA >= buffered.end(buffered.length - 1))) {\n // If current time is at the end of the final buffered region, then any playback\n // stall is most likely caused by buffering in a low bandwidth environment. The tech\n // should fire a `waiting` event in this scenario, but due to browser and tech\n // inconsistencies. Calling `techWaiting_` here allows us to simulate\n // responding to a native `waiting` event when the tech fails to emit one.\n return this.techWaiting_();\n }\n if (this.consecutiveUpdates >= 5 && currentTime === this.lastRecordedTime) {\n this.consecutiveUpdates++;\n this.waiting_();\n } else if (currentTime === this.lastRecordedTime) {\n this.consecutiveUpdates++;\n } else {\n this.consecutiveUpdates = 0;\n this.lastRecordedTime = currentTime;\n }\n }\n /**\n * Resets the 'timeupdate' mechanism designed to detect that we are stalled\n *\n * @private\n */\n\n resetTimeUpdate_() {\n this.consecutiveUpdates = 0;\n }\n /**\n * Fixes situations where there's a bad seek\n *\n * @return {boolean} whether an action was taken to fix the seek\n * @private\n */\n\n fixesBadSeeks_() {\n const seeking = this.tech_.seeking();\n if (!seeking) {\n return false;\n } // TODO: It's possible that these seekable checks should be moved out of this function\n // and into a function that runs on seekablechange. It's also possible that we only need\n // afterSeekableWindow as the buffered check at the bottom is good enough to handle before\n // seekable range.\n\n const seekable = this.seekable();\n const currentTime = this.tech_.currentTime();\n const isAfterSeekableRange = this.afterSeekableWindow_(seekable, currentTime, this.media(), this.allowSeeksWithinUnsafeLiveWindow);\n let seekTo;\n if (isAfterSeekableRange) {\n const seekableEnd = seekable.end(seekable.length - 1); // sync to live point (if VOD, our seekable was updated and we're simply adjusting)\n\n seekTo = seekableEnd;\n }\n if (this.beforeSeekableWindow_(seekable, currentTime)) {\n const seekableStart = seekable.start(0); // sync to the beginning of the live window\n // provide a buffer of .1 seconds to handle rounding/imprecise numbers\n\n seekTo = seekableStart + (\n // if the playlist is too short and the seekable range is an exact time (can\n // happen in live with a 3 segment playlist), then don't use a time delta\n seekableStart === seekable.end(0) ? 0 : SAFE_TIME_DELTA);\n }\n if (typeof seekTo !== 'undefined') {\n this.logger_(`Trying to seek outside of seekable at time ${currentTime} with ` + `seekable range ${printableRange(seekable)}. Seeking to ` + `${seekTo}.`);\n this.tech_.setCurrentTime(seekTo);\n return true;\n }\n const sourceUpdater = this.playlistController_.sourceUpdater_;\n const buffered = this.tech_.buffered();\n const audioBuffered = sourceUpdater.audioBuffer ? sourceUpdater.audioBuffered() : null;\n const videoBuffered = sourceUpdater.videoBuffer ? sourceUpdater.videoBuffered() : null;\n const media = this.media(); // verify that at least two segment durations or one part duration have been\n // appended before checking for a gap.\n\n const minAppendedDuration = media.partTargetDuration ? media.partTargetDuration : (media.targetDuration - TIME_FUDGE_FACTOR) * 2; // verify that at least two segment durations have been\n // appended before checking for a gap.\n\n const bufferedToCheck = [audioBuffered, videoBuffered];\n for (let i = 0; i < bufferedToCheck.length; i++) {\n // skip null buffered\n if (!bufferedToCheck[i]) {\n continue;\n }\n const timeAhead = timeAheadOf(bufferedToCheck[i], currentTime); // if we are less than two video/audio segment durations or one part\n // duration behind we haven't appended enough to call this a bad seek.\n\n if (timeAhead < minAppendedDuration) {\n return false;\n }\n }\n const nextRange = findNextRange(buffered, currentTime); // we have appended enough content, but we don't have anything buffered\n // to seek over the gap\n\n if (nextRange.length === 0) {\n return false;\n }\n seekTo = nextRange.start(0) + SAFE_TIME_DELTA;\n this.logger_(`Buffered region starts (${nextRange.start(0)}) ` + ` just beyond seek point (${currentTime}). Seeking to ${seekTo}.`);\n this.tech_.setCurrentTime(seekTo);\n return true;\n }\n /**\n * Handler for situations when we determine the player is waiting.\n *\n * @private\n */\n\n waiting_() {\n if (this.techWaiting_()) {\n return;\n } // All tech waiting checks failed. Use last resort correction\n\n const currentTime = this.tech_.currentTime();\n const buffered = this.tech_.buffered();\n const currentRange = findRange(buffered, currentTime); // Sometimes the player can stall for unknown reasons within a contiguous buffered\n // region with no indication that anything is amiss (seen in Firefox). Seeking to\n // currentTime is usually enough to kickstart the player. This checks that the player\n // is currently within a buffered region before attempting a corrective seek.\n // Chrome does not appear to continue `timeupdate` events after a `waiting` event\n // until there is ~ 3 seconds of forward buffer available. PlaybackWatcher should also\n // make sure there is ~3 seconds of forward buffer before taking any corrective action\n // to avoid triggering an `unknownwaiting` event when the network is slow.\n\n if (currentRange.length && currentTime + 3 <= currentRange.end(0)) {\n this.resetTimeUpdate_();\n this.tech_.setCurrentTime(currentTime);\n this.logger_(`Stopped at ${currentTime} while inside a buffered region ` + `[${currentRange.start(0)} -> ${currentRange.end(0)}]. Attempting to resume ` + 'playback by seeking to the current time.'); // unknown waiting corrections may be useful for monitoring QoS\n\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-unknown-waiting'\n });\n return;\n }\n }\n /**\n * Handler for situations when the tech fires a `waiting` event\n *\n * @return {boolean}\n * True if an action (or none) was needed to correct the waiting. False if no\n * checks passed\n * @private\n */\n\n techWaiting_() {\n const seekable = this.seekable();\n const currentTime = this.tech_.currentTime();\n if (this.tech_.seeking()) {\n // Tech is seeking or already waiting on another action, no action needed\n return true;\n }\n if (this.beforeSeekableWindow_(seekable, currentTime)) {\n const livePoint = seekable.end(seekable.length - 1);\n this.logger_(`Fell out of live window at time ${currentTime}. Seeking to ` + `live point (seekable end) ${livePoint}`);\n this.resetTimeUpdate_();\n this.tech_.setCurrentTime(livePoint); // live window resyncs may be useful for monitoring QoS\n\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-live-resync'\n });\n return true;\n }\n const sourceUpdater = this.tech_.vhs.playlistController_.sourceUpdater_;\n const buffered = this.tech_.buffered();\n const videoUnderflow = this.videoUnderflow_({\n audioBuffered: sourceUpdater.audioBuffered(),\n videoBuffered: sourceUpdater.videoBuffered(),\n currentTime\n });\n if (videoUnderflow) {\n // Even though the video underflowed and was stuck in a gap, the audio overplayed\n // the gap, leading currentTime into a buffered range. Seeking to currentTime\n // allows the video to catch up to the audio position without losing any audio\n // (only suffering ~3 seconds of frozen video and a pause in audio playback).\n this.resetTimeUpdate_();\n this.tech_.setCurrentTime(currentTime); // video underflow may be useful for monitoring QoS\n\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-video-underflow'\n });\n return true;\n }\n const nextRange = findNextRange(buffered, currentTime); // check for gap\n\n if (nextRange.length > 0) {\n this.logger_(`Stopped at ${currentTime} and seeking to ${nextRange.start(0)}`);\n this.resetTimeUpdate_();\n this.skipTheGap_(currentTime);\n return true;\n } // All checks failed. Returning false to indicate failure to correct waiting\n\n return false;\n }\n afterSeekableWindow_(seekable, currentTime, playlist, allowSeeksWithinUnsafeLiveWindow = false) {\n if (!seekable.length) {\n // we can't make a solid case if there's no seekable, default to false\n return false;\n }\n let allowedEnd = seekable.end(seekable.length - 1) + SAFE_TIME_DELTA;\n const isLive = !playlist.endList;\n const isLLHLS = typeof playlist.partTargetDuration === 'number';\n if (isLive && (isLLHLS || allowSeeksWithinUnsafeLiveWindow)) {\n allowedEnd = seekable.end(seekable.length - 1) + playlist.targetDuration * 3;\n }\n if (currentTime > allowedEnd) {\n return true;\n }\n return false;\n }\n beforeSeekableWindow_(seekable, currentTime) {\n if (seekable.length &&\n // can't fall before 0 and 0 seekable start identifies VOD stream\n seekable.start(0) > 0 && currentTime < seekable.start(0) - this.liveRangeSafeTimeDelta) {\n return true;\n }\n return false;\n }\n videoUnderflow_({\n videoBuffered,\n audioBuffered,\n currentTime\n }) {\n // audio only content will not have video underflow :)\n if (!videoBuffered) {\n return;\n }\n let gap; // find a gap in demuxed content.\n\n if (videoBuffered.length && audioBuffered.length) {\n // in Chrome audio will continue to play for ~3s when we run out of video\n // so we have to check that the video buffer did have some buffer in the\n // past.\n const lastVideoRange = findRange(videoBuffered, currentTime - 3);\n const videoRange = findRange(videoBuffered, currentTime);\n const audioRange = findRange(audioBuffered, currentTime);\n if (audioRange.length && !videoRange.length && lastVideoRange.length) {\n gap = {\n start: lastVideoRange.end(0),\n end: audioRange.end(0)\n };\n } // find a gap in muxed content.\n } else {\n const nextRange = findNextRange(videoBuffered, currentTime); // Even if there is no available next range, there is still a possibility we are\n // stuck in a gap due to video underflow.\n\n if (!nextRange.length) {\n gap = this.gapFromVideoUnderflow_(videoBuffered, currentTime);\n }\n }\n if (gap) {\n this.logger_(`Encountered a gap in video from ${gap.start} to ${gap.end}. ` + `Seeking to current time ${currentTime}`);\n return true;\n }\n return false;\n }\n /**\n * Timer callback. If playback still has not proceeded, then we seek\n * to the start of the next buffered region.\n *\n * @private\n */\n\n skipTheGap_(scheduledCurrentTime) {\n const buffered = this.tech_.buffered();\n const currentTime = this.tech_.currentTime();\n const nextRange = findNextRange(buffered, currentTime);\n this.resetTimeUpdate_();\n if (nextRange.length === 0 || currentTime !== scheduledCurrentTime) {\n return;\n }\n this.logger_('skipTheGap_:', 'currentTime:', currentTime, 'scheduled currentTime:', scheduledCurrentTime, 'nextRange start:', nextRange.start(0)); // only seek if we still have not played\n\n this.tech_.setCurrentTime(nextRange.start(0) + TIME_FUDGE_FACTOR);\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-gap-skip'\n });\n }\n gapFromVideoUnderflow_(buffered, currentTime) {\n // At least in Chrome, if there is a gap in the video buffer, the audio will continue\n // playing for ~3 seconds after the video gap starts. This is done to account for\n // video buffer underflow/underrun (note that this is not done when there is audio\n // buffer underflow/underrun -- in that case the video will stop as soon as it\n // encounters the gap, as audio stalls are more noticeable/jarring to a user than\n // video stalls). The player's time will reflect the playthrough of audio, so the\n // time will appear as if we are in a buffered region, even if we are stuck in a\n // \"gap.\"\n //\n // Example:\n // video buffer: 0 => 10.1, 10.2 => 20\n // audio buffer: 0 => 20\n // overall buffer: 0 => 10.1, 10.2 => 20\n // current time: 13\n //\n // Chrome's video froze at 10 seconds, where the video buffer encountered the gap,\n // however, the audio continued playing until it reached ~3 seconds past the gap\n // (13 seconds), at which point it stops as well. Since current time is past the\n // gap, findNextRange will return no ranges.\n //\n // To check for this issue, we see if there is a gap that starts somewhere within\n // a 3 second range (3 seconds +/- 1 second) back from our current time.\n const gaps = findGaps(buffered);\n for (let i = 0; i < gaps.length; i++) {\n const start = gaps.start(i);\n const end = gaps.end(i); // gap is starts no more than 4 seconds back\n\n if (currentTime - start < 4 && currentTime - start > 2) {\n return {\n start,\n end\n };\n }\n }\n return null;\n }\n}\nconst defaultOptions = {\n errorInterval: 30,\n getSource(next) {\n const tech = this.tech({\n IWillNotUseThisInPlugins: true\n });\n const sourceObj = tech.currentSource_ || this.currentSource();\n return next(sourceObj);\n }\n};\n/**\n * Main entry point for the plugin\n *\n * @param {Player} player a reference to a videojs Player instance\n * @param {Object} [options] an object with plugin options\n * @private\n */\n\nconst initPlugin = function (player, options) {\n let lastCalled = 0;\n let seekTo = 0;\n const localOptions = merge(defaultOptions, options);\n player.ready(() => {\n player.trigger({\n type: 'usage',\n name: 'vhs-error-reload-initialized'\n });\n });\n /**\n * Player modifications to perform that must wait until `loadedmetadata`\n * has been triggered\n *\n * @private\n */\n\n const loadedMetadataHandler = function () {\n if (seekTo) {\n player.currentTime(seekTo);\n }\n };\n /**\n * Set the source on the player element, play, and seek if necessary\n *\n * @param {Object} sourceObj An object specifying the source url and mime-type to play\n * @private\n */\n\n const setSource = function (sourceObj) {\n if (sourceObj === null || sourceObj === undefined) {\n return;\n }\n seekTo = player.duration() !== Infinity && player.currentTime() || 0;\n player.one('loadedmetadata', loadedMetadataHandler);\n player.src(sourceObj);\n player.trigger({\n type: 'usage',\n name: 'vhs-error-reload'\n });\n player.play();\n };\n /**\n * Attempt to get a source from either the built-in getSource function\n * or a custom function provided via the options\n *\n * @private\n */\n\n const errorHandler = function () {\n // Do not attempt to reload the source if a source-reload occurred before\n // 'errorInterval' time has elapsed since the last source-reload\n if (Date.now() - lastCalled < localOptions.errorInterval * 1000) {\n player.trigger({\n type: 'usage',\n name: 'vhs-error-reload-canceled'\n });\n return;\n }\n if (!localOptions.getSource || typeof localOptions.getSource !== 'function') {\n videojs.log.error('ERROR: reloadSourceOnError - The option getSource must be a function!');\n return;\n }\n lastCalled = Date.now();\n return localOptions.getSource.call(player, setSource);\n };\n /**\n * Unbind any event handlers that were bound by the plugin\n *\n * @private\n */\n\n const cleanupEvents = function () {\n player.off('loadedmetadata', loadedMetadataHandler);\n player.off('error', errorHandler);\n player.off('dispose', cleanupEvents);\n };\n /**\n * Cleanup before re-initializing the plugin\n *\n * @param {Object} [newOptions] an object with plugin options\n * @private\n */\n\n const reinitPlugin = function (newOptions) {\n cleanupEvents();\n initPlugin(player, newOptions);\n };\n player.on('error', errorHandler);\n player.on('dispose', cleanupEvents); // Overwrite the plugin function so that we can correctly cleanup before\n // initializing the plugin\n\n player.reloadSourceOnError = reinitPlugin;\n};\n/**\n * Reload the source when an error is detected as long as there\n * wasn't an error previously within the last 30 seconds\n *\n * @param {Object} [options] an object with plugin options\n */\n\nconst reloadSourceOnError = function (options) {\n initPlugin(this, options);\n};\nvar version$4 = \"3.7.0\";\nvar version$3 = \"7.0.1\";\nvar version$2 = \"1.2.2\";\nvar version$1 = \"7.1.0\";\nvar version = \"4.0.1\";\n\n/**\n * @file videojs-http-streaming.js\n *\n * The main file for the VHS project.\n * License: https://github.com/videojs/videojs-http-streaming/blob/main/LICENSE\n */\nconst Vhs = {\n PlaylistLoader,\n Playlist,\n utils,\n STANDARD_PLAYLIST_SELECTOR: lastBandwidthSelector,\n INITIAL_PLAYLIST_SELECTOR: lowestBitrateCompatibleVariantSelector,\n lastBandwidthSelector,\n movingAverageBandwidthSelector,\n comparePlaylistBandwidth,\n comparePlaylistResolution,\n xhr: xhrFactory()\n}; // Define getter/setters for config properties\n\nObject.keys(Config).forEach(prop => {\n Object.defineProperty(Vhs, prop, {\n get() {\n videojs.log.warn(`using Vhs.${prop} is UNSAFE be sure you know what you are doing`);\n return Config[prop];\n },\n set(value) {\n videojs.log.warn(`using Vhs.${prop} is UNSAFE be sure you know what you are doing`);\n if (typeof value !== 'number' || value < 0) {\n videojs.log.warn(`value of Vhs.${prop} must be greater than or equal to 0`);\n return;\n }\n Config[prop] = value;\n }\n });\n});\nconst LOCAL_STORAGE_KEY = 'videojs-vhs';\n/**\n * Updates the selectedIndex of the QualityLevelList when a mediachange happens in vhs.\n *\n * @param {QualityLevelList} qualityLevels The QualityLevelList to update.\n * @param {PlaylistLoader} playlistLoader PlaylistLoader containing the new media info.\n * @function handleVhsMediaChange\n */\n\nconst handleVhsMediaChange = function (qualityLevels, playlistLoader) {\n const newPlaylist = playlistLoader.media();\n let selectedIndex = -1;\n for (let i = 0; i < qualityLevels.length; i++) {\n if (qualityLevels[i].id === newPlaylist.id) {\n selectedIndex = i;\n break;\n }\n }\n qualityLevels.selectedIndex_ = selectedIndex;\n qualityLevels.trigger({\n selectedIndex,\n type: 'change'\n });\n};\n/**\n * Adds quality levels to list once playlist metadata is available\n *\n * @param {QualityLevelList} qualityLevels The QualityLevelList to attach events to.\n * @param {Object} vhs Vhs object to listen to for media events.\n * @function handleVhsLoadedMetadata\n */\n\nconst handleVhsLoadedMetadata = function (qualityLevels, vhs) {\n vhs.representations().forEach(rep => {\n qualityLevels.addQualityLevel(rep);\n });\n handleVhsMediaChange(qualityLevels, vhs.playlists);\n}; // VHS is a source handler, not a tech. Make sure attempts to use it\n// as one do not cause exceptions.\n\nVhs.canPlaySource = function () {\n return videojs.log.warn('VHS is no longer a tech. Please remove it from ' + 'your player\\'s techOrder.');\n};\nconst emeKeySystems = (keySystemOptions, mainPlaylist, audioPlaylist) => {\n if (!keySystemOptions) {\n return keySystemOptions;\n }\n let codecs = {};\n if (mainPlaylist && mainPlaylist.attributes && mainPlaylist.attributes.CODECS) {\n codecs = unwrapCodecList(parseCodecs(mainPlaylist.attributes.CODECS));\n }\n if (audioPlaylist && audioPlaylist.attributes && audioPlaylist.attributes.CODECS) {\n codecs.audio = audioPlaylist.attributes.CODECS;\n }\n const videoContentType = getMimeForCodec(codecs.video);\n const audioContentType = getMimeForCodec(codecs.audio); // upsert the content types based on the selected playlist\n\n const keySystemContentTypes = {};\n for (const keySystem in keySystemOptions) {\n keySystemContentTypes[keySystem] = {};\n if (audioContentType) {\n keySystemContentTypes[keySystem].audioContentType = audioContentType;\n }\n if (videoContentType) {\n keySystemContentTypes[keySystem].videoContentType = videoContentType;\n } // Default to using the video playlist's PSSH even though they may be different, as\n // videojs-contrib-eme will only accept one in the options.\n //\n // This shouldn't be an issue for most cases as early intialization will handle all\n // unique PSSH values, and if they aren't, then encrypted events should have the\n // specific information needed for the unique license.\n\n if (mainPlaylist.contentProtection && mainPlaylist.contentProtection[keySystem] && mainPlaylist.contentProtection[keySystem].pssh) {\n keySystemContentTypes[keySystem].pssh = mainPlaylist.contentProtection[keySystem].pssh;\n } // videojs-contrib-eme accepts the option of specifying: 'com.some.cdm': 'url'\n // so we need to prevent overwriting the URL entirely\n\n if (typeof keySystemOptions[keySystem] === 'string') {\n keySystemContentTypes[keySystem].url = keySystemOptions[keySystem];\n }\n }\n return merge(keySystemOptions, keySystemContentTypes);\n};\n/**\n * @typedef {Object} KeySystems\n *\n * keySystems configuration for https://github.com/videojs/videojs-contrib-eme\n * Note: not all options are listed here.\n *\n * @property {Uint8Array} [pssh]\n * Protection System Specific Header\n */\n\n/**\n * Goes through all the playlists and collects an array of KeySystems options objects\n * containing each playlist's keySystems and their pssh values, if available.\n *\n * @param {Object[]} playlists\n * The playlists to look through\n * @param {string[]} keySystems\n * The keySystems to collect pssh values for\n *\n * @return {KeySystems[]}\n * An array of KeySystems objects containing available key systems and their\n * pssh values\n */\n\nconst getAllPsshKeySystemsOptions = (playlists, keySystems) => {\n return playlists.reduce((keySystemsArr, playlist) => {\n if (!playlist.contentProtection) {\n return keySystemsArr;\n }\n const keySystemsOptions = keySystems.reduce((keySystemsObj, keySystem) => {\n const keySystemOptions = playlist.contentProtection[keySystem];\n if (keySystemOptions && keySystemOptions.pssh) {\n keySystemsObj[keySystem] = {\n pssh: keySystemOptions.pssh\n };\n }\n return keySystemsObj;\n }, {});\n if (Object.keys(keySystemsOptions).length) {\n keySystemsArr.push(keySystemsOptions);\n }\n return keySystemsArr;\n }, []);\n};\n/**\n * Returns a promise that waits for the\n * [eme plugin](https://github.com/videojs/videojs-contrib-eme) to create a key session.\n *\n * Works around https://bugs.chromium.org/p/chromium/issues/detail?id=895449 in non-IE11\n * browsers.\n *\n * As per the above ticket, this is particularly important for Chrome, where, if\n * unencrypted content is appended before encrypted content and the key session has not\n * been created, a MEDIA_ERR_DECODE will be thrown once the encrypted content is reached\n * during playback.\n *\n * @param {Object} player\n * The player instance\n * @param {Object[]} sourceKeySystems\n * The key systems options from the player source\n * @param {Object} [audioMedia]\n * The active audio media playlist (optional)\n * @param {Object[]} mainPlaylists\n * The playlists found on the main playlist object\n *\n * @return {Object}\n * Promise that resolves when the key session has been created\n */\n\nconst waitForKeySessionCreation = ({\n player,\n sourceKeySystems,\n audioMedia,\n mainPlaylists\n}) => {\n if (!player.eme.initializeMediaKeys) {\n return Promise.resolve();\n } // TODO should all audio PSSH values be initialized for DRM?\n //\n // All unique video rendition pssh values are initialized for DRM, but here only\n // the initial audio playlist license is initialized. In theory, an encrypted\n // event should be fired if the user switches to an alternative audio playlist\n // where a license is required, but this case hasn't yet been tested. In addition, there\n // may be many alternate audio playlists unlikely to be used (e.g., multiple different\n // languages).\n\n const playlists = audioMedia ? mainPlaylists.concat([audioMedia]) : mainPlaylists;\n const keySystemsOptionsArr = getAllPsshKeySystemsOptions(playlists, Object.keys(sourceKeySystems));\n const initializationFinishedPromises = [];\n const keySessionCreatedPromises = []; // Since PSSH values are interpreted as initData, EME will dedupe any duplicates. The\n // only place where it should not be deduped is for ms-prefixed APIs, but\n // the existence of modern EME APIs in addition to\n // ms-prefixed APIs on Edge should prevent this from being a concern.\n // initializeMediaKeys also won't use the webkit-prefixed APIs.\n\n keySystemsOptionsArr.forEach(keySystemsOptions => {\n keySessionCreatedPromises.push(new Promise((resolve, reject) => {\n player.tech_.one('keysessioncreated', resolve);\n }));\n initializationFinishedPromises.push(new Promise((resolve, reject) => {\n player.eme.initializeMediaKeys({\n keySystems: keySystemsOptions\n }, err => {\n if (err) {\n reject(err);\n return;\n }\n resolve();\n });\n }));\n }); // The reasons Promise.race is chosen over Promise.any:\n //\n // * Promise.any is only available in Safari 14+.\n // * None of these promises are expected to reject. If they do reject, it might be\n // better here for the race to surface the rejection, rather than mask it by using\n // Promise.any.\n\n return Promise.race([\n // If a session was previously created, these will all finish resolving without\n // creating a new session, otherwise it will take until the end of all license\n // requests, which is why the key session check is used (to make setup much faster).\n Promise.all(initializationFinishedPromises),\n // Once a single session is created, the browser knows DRM will be used.\n Promise.race(keySessionCreatedPromises)]);\n};\n/**\n * If the [eme](https://github.com/videojs/videojs-contrib-eme) plugin is available, and\n * there are keySystems on the source, sets up source options to prepare the source for\n * eme.\n *\n * @param {Object} player\n * The player instance\n * @param {Object[]} sourceKeySystems\n * The key systems options from the player source\n * @param {Object} media\n * The active media playlist\n * @param {Object} [audioMedia]\n * The active audio media playlist (optional)\n *\n * @return {boolean}\n * Whether or not options were configured and EME is available\n */\n\nconst setupEmeOptions = ({\n player,\n sourceKeySystems,\n media,\n audioMedia\n}) => {\n const sourceOptions = emeKeySystems(sourceKeySystems, media, audioMedia);\n if (!sourceOptions) {\n return false;\n }\n player.currentSource().keySystems = sourceOptions; // eme handles the rest of the setup, so if it is missing\n // do nothing.\n\n if (sourceOptions && !player.eme) {\n videojs.log.warn('DRM encrypted source cannot be decrypted without a DRM plugin');\n return false;\n }\n return true;\n};\nconst getVhsLocalStorage = () => {\n if (!window$1.localStorage) {\n return null;\n }\n const storedObject = window$1.localStorage.getItem(LOCAL_STORAGE_KEY);\n if (!storedObject) {\n return null;\n }\n try {\n return JSON.parse(storedObject);\n } catch (e) {\n // someone may have tampered with the value\n return null;\n }\n};\nconst updateVhsLocalStorage = options => {\n if (!window$1.localStorage) {\n return false;\n }\n let objectToStore = getVhsLocalStorage();\n objectToStore = objectToStore ? merge(objectToStore, options) : options;\n try {\n window$1.localStorage.setItem(LOCAL_STORAGE_KEY, JSON.stringify(objectToStore));\n } catch (e) {\n // Throws if storage is full (e.g., always on iOS 5+ Safari private mode, where\n // storage is set to 0).\n // https://developer.mozilla.org/en-US/docs/Web/API/Storage/setItem#Exceptions\n // No need to perform any operation.\n return false;\n }\n return objectToStore;\n};\n/**\n * Parses VHS-supported media types from data URIs. See\n * https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URIs\n * for information on data URIs.\n *\n * @param {string} dataUri\n * The data URI\n *\n * @return {string|Object}\n * The parsed object/string, or the original string if no supported media type\n * was found\n */\n\nconst expandDataUri = dataUri => {\n if (dataUri.toLowerCase().indexOf('data:application/vnd.videojs.vhs+json,') === 0) {\n return JSON.parse(dataUri.substring(dataUri.indexOf(',') + 1));\n } // no known case for this data URI, return the string as-is\n\n return dataUri;\n};\n/**\n * Adds a request hook to an xhr object\n *\n * @param {Object} xhr object to add the onRequest hook to\n * @param {function} callback hook function for an xhr request\n */\n\nconst addOnRequestHook = (xhr, callback) => {\n if (!xhr._requestCallbackSet) {\n xhr._requestCallbackSet = new Set();\n }\n xhr._requestCallbackSet.add(callback);\n};\n/**\n * Adds a response hook to an xhr object\n *\n * @param {Object} xhr object to add the onResponse hook to\n * @param {function} callback hook function for an xhr response\n */\n\nconst addOnResponseHook = (xhr, callback) => {\n if (!xhr._responseCallbackSet) {\n xhr._responseCallbackSet = new Set();\n }\n xhr._responseCallbackSet.add(callback);\n};\n/**\n * Removes a request hook on an xhr object, deletes the onRequest set if empty.\n *\n * @param {Object} xhr object to remove the onRequest hook from\n * @param {function} callback hook function to remove\n */\n\nconst removeOnRequestHook = (xhr, callback) => {\n if (!xhr._requestCallbackSet) {\n return;\n }\n xhr._requestCallbackSet.delete(callback);\n if (!xhr._requestCallbackSet.size) {\n delete xhr._requestCallbackSet;\n }\n};\n/**\n * Removes a response hook on an xhr object, deletes the onResponse set if empty.\n *\n * @param {Object} xhr object to remove the onResponse hook from\n * @param {function} callback hook function to remove\n */\n\nconst removeOnResponseHook = (xhr, callback) => {\n if (!xhr._responseCallbackSet) {\n return;\n }\n xhr._responseCallbackSet.delete(callback);\n if (!xhr._responseCallbackSet.size) {\n delete xhr._responseCallbackSet;\n }\n};\n/**\n * Whether the browser has built-in HLS support.\n */\n\nVhs.supportsNativeHls = function () {\n if (!document || !document.createElement) {\n return false;\n }\n const video = document.createElement('video'); // native HLS is definitely not supported if HTML5 video isn't\n\n if (!videojs.getTech('Html5').isSupported()) {\n return false;\n } // HLS manifests can go by many mime-types\n\n const canPlay = [\n // Apple santioned\n 'application/vnd.apple.mpegurl',\n // Apple sanctioned for backwards compatibility\n 'audio/mpegurl',\n // Very common\n 'audio/x-mpegurl',\n // Very common\n 'application/x-mpegurl',\n // Included for completeness\n 'video/x-mpegurl', 'video/mpegurl', 'application/mpegurl'];\n return canPlay.some(function (canItPlay) {\n return /maybe|probably/i.test(video.canPlayType(canItPlay));\n });\n}();\nVhs.supportsNativeDash = function () {\n if (!document || !document.createElement || !videojs.getTech('Html5').isSupported()) {\n return false;\n }\n return /maybe|probably/i.test(document.createElement('video').canPlayType('application/dash+xml'));\n}();\nVhs.supportsTypeNatively = type => {\n if (type === 'hls') {\n return Vhs.supportsNativeHls;\n }\n if (type === 'dash') {\n return Vhs.supportsNativeDash;\n }\n return false;\n};\n/**\n * VHS is a source handler, not a tech. Make sure attempts to use it\n * as one do not cause exceptions.\n */\n\nVhs.isSupported = function () {\n return videojs.log.warn('VHS is no longer a tech. Please remove it from ' + 'your player\\'s techOrder.');\n};\n/**\n * A global function for setting an onRequest hook\n *\n * @param {function} callback for request modifiction\n */\n\nVhs.xhr.onRequest = function (callback) {\n addOnRequestHook(Vhs.xhr, callback);\n};\n/**\n * A global function for setting an onResponse hook\n *\n * @param {callback} callback for response data retrieval\n */\n\nVhs.xhr.onResponse = function (callback) {\n addOnResponseHook(Vhs.xhr, callback);\n};\n/**\n * Deletes a global onRequest callback if it exists\n *\n * @param {function} callback to delete from the global set\n */\n\nVhs.xhr.offRequest = function (callback) {\n removeOnRequestHook(Vhs.xhr, callback);\n};\n/**\n * Deletes a global onResponse callback if it exists\n *\n * @param {function} callback to delete from the global set\n */\n\nVhs.xhr.offResponse = function (callback) {\n removeOnResponseHook(Vhs.xhr, callback);\n};\nconst Component = videojs.getComponent('Component');\n/**\n * The Vhs Handler object, where we orchestrate all of the parts\n * of VHS to interact with video.js\n *\n * @class VhsHandler\n * @extends videojs.Component\n * @param {Object} source the soruce object\n * @param {Tech} tech the parent tech object\n * @param {Object} options optional and required options\n */\n\nclass VhsHandler extends Component {\n constructor(source, tech, options) {\n super(tech, options.vhs); // if a tech level `initialBandwidth` option was passed\n // use that over the VHS level `bandwidth` option\n\n if (typeof options.initialBandwidth === 'number') {\n this.options_.bandwidth = options.initialBandwidth;\n }\n this.logger_ = logger('VhsHandler'); // we need access to the player in some cases,\n // so, get it from Video.js via the `playerId`\n\n if (tech.options_ && tech.options_.playerId) {\n const _player = videojs.getPlayer(tech.options_.playerId);\n this.player_ = _player;\n }\n this.tech_ = tech;\n this.source_ = source;\n this.stats = {};\n this.ignoreNextSeekingEvent_ = false;\n this.setOptions_();\n if (this.options_.overrideNative && tech.overrideNativeAudioTracks && tech.overrideNativeVideoTracks) {\n tech.overrideNativeAudioTracks(true);\n tech.overrideNativeVideoTracks(true);\n } else if (this.options_.overrideNative && (tech.featuresNativeVideoTracks || tech.featuresNativeAudioTracks)) {\n // overriding native VHS only works if audio tracks have been emulated\n // error early if we're misconfigured\n throw new Error('Overriding native VHS requires emulated tracks. ' + 'See https://git.io/vMpjB');\n } // listen for fullscreenchange events for this player so that we\n // can adjust our quality selection quickly\n\n this.on(document, ['fullscreenchange', 'webkitfullscreenchange', 'mozfullscreenchange', 'MSFullscreenChange'], event => {\n const fullscreenElement = document.fullscreenElement || document.webkitFullscreenElement || document.mozFullScreenElement || document.msFullscreenElement;\n if (fullscreenElement && fullscreenElement.contains(this.tech_.el())) {\n this.playlistController_.fastQualityChange_();\n } else {\n // When leaving fullscreen, since the in page pixel dimensions should be smaller\n // than full screen, see if there should be a rendition switch down to preserve\n // bandwidth.\n this.playlistController_.checkABR_();\n }\n });\n this.on(this.tech_, 'seeking', function () {\n if (this.ignoreNextSeekingEvent_) {\n this.ignoreNextSeekingEvent_ = false;\n return;\n }\n this.setCurrentTime(this.tech_.currentTime());\n });\n this.on(this.tech_, 'error', function () {\n // verify that the error was real and we are loaded\n // enough to have pc loaded.\n if (this.tech_.error() && this.playlistController_) {\n this.playlistController_.pauseLoading();\n }\n });\n this.on(this.tech_, 'play', this.play);\n }\n setOptions_() {\n // defaults\n this.options_.withCredentials = this.options_.withCredentials || false;\n this.options_.limitRenditionByPlayerDimensions = this.options_.limitRenditionByPlayerDimensions === false ? false : true;\n this.options_.useDevicePixelRatio = this.options_.useDevicePixelRatio || false;\n this.options_.useBandwidthFromLocalStorage = typeof this.source_.useBandwidthFromLocalStorage !== 'undefined' ? this.source_.useBandwidthFromLocalStorage : this.options_.useBandwidthFromLocalStorage || false;\n this.options_.useForcedSubtitles = this.options_.useForcedSubtitles || false;\n this.options_.useNetworkInformationApi = this.options_.useNetworkInformationApi || false;\n this.options_.useDtsForTimestampOffset = this.options_.useDtsForTimestampOffset || false;\n this.options_.calculateTimestampOffsetForEachSegment = this.options_.calculateTimestampOffsetForEachSegment || false;\n this.options_.customTagParsers = this.options_.customTagParsers || [];\n this.options_.customTagMappers = this.options_.customTagMappers || [];\n this.options_.cacheEncryptionKeys = this.options_.cacheEncryptionKeys || false;\n this.options_.llhls = this.options_.llhls === false ? false : true;\n this.options_.bufferBasedABR = this.options_.bufferBasedABR || false;\n if (typeof this.options_.playlistExclusionDuration !== 'number') {\n this.options_.playlistExclusionDuration = 60;\n }\n if (typeof this.options_.bandwidth !== 'number') {\n if (this.options_.useBandwidthFromLocalStorage) {\n const storedObject = getVhsLocalStorage();\n if (storedObject && storedObject.bandwidth) {\n this.options_.bandwidth = storedObject.bandwidth;\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-bandwidth-from-local-storage'\n });\n }\n if (storedObject && storedObject.throughput) {\n this.options_.throughput = storedObject.throughput;\n this.tech_.trigger({\n type: 'usage',\n name: 'vhs-throughput-from-local-storage'\n });\n }\n }\n } // if bandwidth was not set by options or pulled from local storage, start playlist\n // selection at a reasonable bandwidth\n\n if (typeof this.options_.bandwidth !== 'number') {\n this.options_.bandwidth = Config.INITIAL_BANDWIDTH;\n } // If the bandwidth number is unchanged from the initial setting\n // then this takes precedence over the enableLowInitialPlaylist option\n\n this.options_.enableLowInitialPlaylist = this.options_.enableLowInitialPlaylist && this.options_.bandwidth === Config.INITIAL_BANDWIDTH; // grab options passed to player.src\n\n ['withCredentials', 'useDevicePixelRatio', 'limitRenditionByPlayerDimensions', 'bandwidth', 'customTagParsers', 'customTagMappers', 'cacheEncryptionKeys', 'playlistSelector', 'initialPlaylistSelector', 'bufferBasedABR', 'liveRangeSafeTimeDelta', 'llhls', 'useForcedSubtitles', 'useNetworkInformationApi', 'useDtsForTimestampOffset', 'calculateTimestampOffsetForEachSegment', 'exactManifestTimings', 'leastPixelDiffSelector'].forEach(option => {\n if (typeof this.source_[option] !== 'undefined') {\n this.options_[option] = this.source_[option];\n }\n });\n this.limitRenditionByPlayerDimensions = this.options_.limitRenditionByPlayerDimensions;\n this.useDevicePixelRatio = this.options_.useDevicePixelRatio;\n }\n /**\n * called when player.src gets called, handle a new source\n *\n * @param {Object} src the source object to handle\n */\n\n src(src, type) {\n // do nothing if the src is falsey\n if (!src) {\n return;\n }\n this.setOptions_(); // add main playlist controller options\n\n this.options_.src = expandDataUri(this.source_.src);\n this.options_.tech = this.tech_;\n this.options_.externVhs = Vhs;\n this.options_.sourceType = simpleTypeFromSourceType(type); // Whenever we seek internally, we should update the tech\n\n this.options_.seekTo = time => {\n this.tech_.setCurrentTime(time);\n };\n this.playlistController_ = new PlaylistController(this.options_);\n const playbackWatcherOptions = merge({\n liveRangeSafeTimeDelta: SAFE_TIME_DELTA\n }, this.options_, {\n seekable: () => this.seekable(),\n media: () => this.playlistController_.media(),\n playlistController: this.playlistController_\n });\n this.playbackWatcher_ = new PlaybackWatcher(playbackWatcherOptions);\n this.playlistController_.on('error', () => {\n const player = videojs.players[this.tech_.options_.playerId];\n let error = this.playlistController_.error;\n if (typeof error === 'object' && !error.code) {\n error.code = 3;\n } else if (typeof error === 'string') {\n error = {\n message: error,\n code: 3\n };\n }\n player.error(error);\n });\n const defaultSelector = this.options_.bufferBasedABR ? Vhs.movingAverageBandwidthSelector(0.55) : Vhs.STANDARD_PLAYLIST_SELECTOR; // `this` in selectPlaylist should be the VhsHandler for backwards\n // compatibility with < v2\n\n this.playlistController_.selectPlaylist = this.selectPlaylist ? this.selectPlaylist.bind(this) : defaultSelector.bind(this);\n this.playlistController_.selectInitialPlaylist = Vhs.INITIAL_PLAYLIST_SELECTOR.bind(this); // re-expose some internal objects for backwards compatibility with < v2\n\n this.playlists = this.playlistController_.mainPlaylistLoader_;\n this.mediaSource = this.playlistController_.mediaSource; // Proxy assignment of some properties to the main playlist\n // controller. Using a custom property for backwards compatibility\n // with < v2\n\n Object.defineProperties(this, {\n selectPlaylist: {\n get() {\n return this.playlistController_.selectPlaylist;\n },\n set(selectPlaylist) {\n this.playlistController_.selectPlaylist = selectPlaylist.bind(this);\n }\n },\n throughput: {\n get() {\n return this.playlistController_.mainSegmentLoader_.throughput.rate;\n },\n set(throughput) {\n this.playlistController_.mainSegmentLoader_.throughput.rate = throughput; // By setting `count` to 1 the throughput value becomes the starting value\n // for the cumulative average\n\n this.playlistController_.mainSegmentLoader_.throughput.count = 1;\n }\n },\n bandwidth: {\n get() {\n let playerBandwidthEst = this.playlistController_.mainSegmentLoader_.bandwidth;\n const networkInformation = window$1.navigator.connection || window$1.navigator.mozConnection || window$1.navigator.webkitConnection;\n const tenMbpsAsBitsPerSecond = 10e6;\n if (this.options_.useNetworkInformationApi && networkInformation) {\n // downlink returns Mbps\n // https://developer.mozilla.org/en-US/docs/Web/API/NetworkInformation/downlink\n const networkInfoBandwidthEstBitsPerSec = networkInformation.downlink * 1000 * 1000; // downlink maxes out at 10 Mbps. In the event that both networkInformationApi and the player\n // estimate a bandwidth greater than 10 Mbps, use the larger of the two estimates to ensure that\n // high quality streams are not filtered out.\n\n if (networkInfoBandwidthEstBitsPerSec >= tenMbpsAsBitsPerSecond && playerBandwidthEst >= tenMbpsAsBitsPerSecond) {\n playerBandwidthEst = Math.max(playerBandwidthEst, networkInfoBandwidthEstBitsPerSec);\n } else {\n playerBandwidthEst = networkInfoBandwidthEstBitsPerSec;\n }\n }\n return playerBandwidthEst;\n },\n set(bandwidth) {\n this.playlistController_.mainSegmentLoader_.bandwidth = bandwidth; // setting the bandwidth manually resets the throughput counter\n // `count` is set to zero that current value of `rate` isn't included\n // in the cumulative average\n\n this.playlistController_.mainSegmentLoader_.throughput = {\n rate: 0,\n count: 0\n };\n }\n },\n /**\n * `systemBandwidth` is a combination of two serial processes bit-rates. The first\n * is the network bitrate provided by `bandwidth` and the second is the bitrate of\n * the entire process after that - decryption, transmuxing, and appending - provided\n * by `throughput`.\n *\n * Since the two process are serial, the overall system bandwidth is given by:\n * sysBandwidth = 1 / (1 / bandwidth + 1 / throughput)\n */\n systemBandwidth: {\n get() {\n const invBandwidth = 1 / (this.bandwidth || 1);\n let invThroughput;\n if (this.throughput > 0) {\n invThroughput = 1 / this.throughput;\n } else {\n invThroughput = 0;\n }\n const systemBitrate = Math.floor(1 / (invBandwidth + invThroughput));\n return systemBitrate;\n },\n set() {\n videojs.log.error('The \"systemBandwidth\" property is read-only');\n }\n }\n });\n if (this.options_.bandwidth) {\n this.bandwidth = this.options_.bandwidth;\n }\n if (this.options_.throughput) {\n this.throughput = this.options_.throughput;\n }\n Object.defineProperties(this.stats, {\n bandwidth: {\n get: () => this.bandwidth || 0,\n enumerable: true\n },\n mediaRequests: {\n get: () => this.playlistController_.mediaRequests_() || 0,\n enumerable: true\n },\n mediaRequestsAborted: {\n get: () => this.playlistController_.mediaRequestsAborted_() || 0,\n enumerable: true\n },\n mediaRequestsTimedout: {\n get: () => this.playlistController_.mediaRequestsTimedout_() || 0,\n enumerable: true\n },\n mediaRequestsErrored: {\n get: () => this.playlistController_.mediaRequestsErrored_() || 0,\n enumerable: true\n },\n mediaTransferDuration: {\n get: () => this.playlistController_.mediaTransferDuration_() || 0,\n enumerable: true\n },\n mediaBytesTransferred: {\n get: () => this.playlistController_.mediaBytesTransferred_() || 0,\n enumerable: true\n },\n mediaSecondsLoaded: {\n get: () => this.playlistController_.mediaSecondsLoaded_() || 0,\n enumerable: true\n },\n mediaAppends: {\n get: () => this.playlistController_.mediaAppends_() || 0,\n enumerable: true\n },\n mainAppendsToLoadedData: {\n get: () => this.playlistController_.mainAppendsToLoadedData_() || 0,\n enumerable: true\n },\n audioAppendsToLoadedData: {\n get: () => this.playlistController_.audioAppendsToLoadedData_() || 0,\n enumerable: true\n },\n appendsToLoadedData: {\n get: () => this.playlistController_.appendsToLoadedData_() || 0,\n enumerable: true\n },\n timeToLoadedData: {\n get: () => this.playlistController_.timeToLoadedData_() || 0,\n enumerable: true\n },\n buffered: {\n get: () => timeRangesToArray(this.tech_.buffered()),\n enumerable: true\n },\n currentTime: {\n get: () => this.tech_.currentTime(),\n enumerable: true\n },\n currentSource: {\n get: () => this.tech_.currentSource_,\n enumerable: true\n },\n currentTech: {\n get: () => this.tech_.name_,\n enumerable: true\n },\n duration: {\n get: () => this.tech_.duration(),\n enumerable: true\n },\n main: {\n get: () => this.playlists.main,\n enumerable: true\n },\n playerDimensions: {\n get: () => this.tech_.currentDimensions(),\n enumerable: true\n },\n seekable: {\n get: () => timeRangesToArray(this.tech_.seekable()),\n enumerable: true\n },\n timestamp: {\n get: () => Date.now(),\n enumerable: true\n },\n videoPlaybackQuality: {\n get: () => this.tech_.getVideoPlaybackQuality(),\n enumerable: true\n }\n });\n this.tech_.one('canplay', this.playlistController_.setupFirstPlay.bind(this.playlistController_));\n this.tech_.on('bandwidthupdate', () => {\n if (this.options_.useBandwidthFromLocalStorage) {\n updateVhsLocalStorage({\n bandwidth: this.bandwidth,\n throughput: Math.round(this.throughput)\n });\n }\n });\n this.playlistController_.on('selectedinitialmedia', () => {\n // Add the manual rendition mix-in to VhsHandler\n renditionSelectionMixin(this);\n });\n this.playlistController_.sourceUpdater_.on('createdsourcebuffers', () => {\n this.setupEme_();\n }); // the bandwidth of the primary segment loader is our best\n // estimate of overall bandwidth\n\n this.on(this.playlistController_, 'progress', function () {\n this.tech_.trigger('progress');\n }); // In the live case, we need to ignore the very first `seeking` event since\n // that will be the result of the seek-to-live behavior\n\n this.on(this.playlistController_, 'firstplay', function () {\n this.ignoreNextSeekingEvent_ = true;\n });\n this.setupQualityLevels_(); // do nothing if the tech has been disposed already\n // this can occur if someone sets the src in player.ready(), for instance\n\n if (!this.tech_.el()) {\n return;\n }\n this.mediaSourceUrl_ = window$1.URL.createObjectURL(this.playlistController_.mediaSource);\n this.tech_.src(this.mediaSourceUrl_);\n }\n createKeySessions_() {\n const audioPlaylistLoader = this.playlistController_.mediaTypes_.AUDIO.activePlaylistLoader;\n this.logger_('waiting for EME key session creation');\n waitForKeySessionCreation({\n player: this.player_,\n sourceKeySystems: this.source_.keySystems,\n audioMedia: audioPlaylistLoader && audioPlaylistLoader.media(),\n mainPlaylists: this.playlists.main.playlists\n }).then(() => {\n this.logger_('created EME key session');\n this.playlistController_.sourceUpdater_.initializedEme();\n }).catch(err => {\n this.logger_('error while creating EME key session', err);\n this.player_.error({\n message: 'Failed to initialize media keys for EME',\n code: 3\n });\n });\n }\n handleWaitingForKey_() {\n // If waitingforkey is fired, it's possible that the data that's necessary to retrieve\n // the key is in the manifest. While this should've happened on initial source load, it\n // may happen again in live streams where the keys change, and the manifest info\n // reflects the update.\n //\n // Because videojs-contrib-eme compares the PSSH data we send to that of PSSH data it's\n // already requested keys for, we don't have to worry about this generating extraneous\n // requests.\n this.logger_('waitingforkey fired, attempting to create any new key sessions');\n this.createKeySessions_();\n }\n /**\n * If necessary and EME is available, sets up EME options and waits for key session\n * creation.\n *\n * This function also updates the source updater so taht it can be used, as for some\n * browsers, EME must be configured before content is appended (if appending unencrypted\n * content before encrypted content).\n */\n\n setupEme_() {\n const audioPlaylistLoader = this.playlistController_.mediaTypes_.AUDIO.activePlaylistLoader;\n const didSetupEmeOptions = setupEmeOptions({\n player: this.player_,\n sourceKeySystems: this.source_.keySystems,\n media: this.playlists.media(),\n audioMedia: audioPlaylistLoader && audioPlaylistLoader.media()\n });\n this.player_.tech_.on('keystatuschange', e => {\n if (e.status !== 'output-restricted') {\n return;\n }\n const mainPlaylist = this.playlistController_.main();\n if (!mainPlaylist || !mainPlaylist.playlists) {\n return;\n }\n const excludedHDPlaylists = []; // Assume all HD streams are unplayable and exclude them from ABR selection\n\n mainPlaylist.playlists.forEach(playlist => {\n if (playlist && playlist.attributes && playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.height >= 720) {\n if (!playlist.excludeUntil || playlist.excludeUntil < Infinity) {\n playlist.excludeUntil = Infinity;\n excludedHDPlaylists.push(playlist);\n }\n }\n });\n if (excludedHDPlaylists.length) {\n videojs.log.warn('DRM keystatus changed to \"output-restricted.\" Removing the following HD playlists ' + 'that will most likely fail to play and clearing the buffer. ' + 'This may be due to HDCP restrictions on the stream and the capabilities of the current device.', ...excludedHDPlaylists); // Clear the buffer before switching playlists, since it may already contain unplayable segments\n\n this.playlistController_.mainSegmentLoader_.resetEverything();\n this.playlistController_.fastQualityChange_();\n }\n });\n this.handleWaitingForKey_ = this.handleWaitingForKey_.bind(this);\n this.player_.tech_.on('waitingforkey', this.handleWaitingForKey_);\n if (!didSetupEmeOptions) {\n // If EME options were not set up, we've done all we could to initialize EME.\n this.playlistController_.sourceUpdater_.initializedEme();\n return;\n }\n this.createKeySessions_();\n }\n /**\n * Initializes the quality levels and sets listeners to update them.\n *\n * @method setupQualityLevels_\n * @private\n */\n\n setupQualityLevels_() {\n const player = videojs.players[this.tech_.options_.playerId]; // if there isn't a player or there isn't a qualityLevels plugin\n // or qualityLevels_ listeners have already been setup, do nothing.\n\n if (!player || !player.qualityLevels || this.qualityLevels_) {\n return;\n }\n this.qualityLevels_ = player.qualityLevels();\n this.playlistController_.on('selectedinitialmedia', () => {\n handleVhsLoadedMetadata(this.qualityLevels_, this);\n });\n this.playlists.on('mediachange', () => {\n handleVhsMediaChange(this.qualityLevels_, this.playlists);\n });\n }\n /**\n * return the version\n */\n\n static version() {\n return {\n '@videojs/http-streaming': version$4,\n 'mux.js': version$3,\n 'mpd-parser': version$2,\n 'm3u8-parser': version$1,\n 'aes-decrypter': version\n };\n }\n /**\n * return the version\n */\n\n version() {\n return this.constructor.version();\n }\n canChangeType() {\n return SourceUpdater.canChangeType();\n }\n /**\n * Begin playing the video.\n */\n\n play() {\n this.playlistController_.play();\n }\n /**\n * a wrapper around the function in PlaylistController\n */\n\n setCurrentTime(currentTime) {\n this.playlistController_.setCurrentTime(currentTime);\n }\n /**\n * a wrapper around the function in PlaylistController\n */\n\n duration() {\n return this.playlistController_.duration();\n }\n /**\n * a wrapper around the function in PlaylistController\n */\n\n seekable() {\n return this.playlistController_.seekable();\n }\n /**\n * Abort all outstanding work and cleanup.\n */\n\n dispose() {\n if (this.playbackWatcher_) {\n this.playbackWatcher_.dispose();\n }\n if (this.playlistController_) {\n this.playlistController_.dispose();\n }\n if (this.qualityLevels_) {\n this.qualityLevels_.dispose();\n }\n if (this.tech_ && this.tech_.vhs) {\n delete this.tech_.vhs;\n }\n if (this.mediaSourceUrl_ && window$1.URL.revokeObjectURL) {\n window$1.URL.revokeObjectURL(this.mediaSourceUrl_);\n this.mediaSourceUrl_ = null;\n }\n if (this.tech_) {\n this.tech_.off('waitingforkey', this.handleWaitingForKey_);\n }\n super.dispose();\n }\n convertToProgramTime(time, callback) {\n return getProgramTime({\n playlist: this.playlistController_.media(),\n time,\n callback\n });\n } // the player must be playing before calling this\n\n seekToProgramTime(programTime, callback, pauseAfterSeek = true, retryCount = 2) {\n return seekToProgramTime({\n programTime,\n playlist: this.playlistController_.media(),\n retryCount,\n pauseAfterSeek,\n seekTo: this.options_.seekTo,\n tech: this.options_.tech,\n callback\n });\n }\n /**\n * Adds the onRequest, onResponse, offRequest and offResponse functions\n * to the VhsHandler xhr Object.\n */\n\n setupXhrHooks_() {\n /**\n * A player function for setting an onRequest hook\n *\n * @param {function} callback for request modifiction\n */\n this.xhr.onRequest = callback => {\n addOnRequestHook(this.xhr, callback);\n };\n /**\n * A player function for setting an onResponse hook\n *\n * @param {callback} callback for response data retrieval\n */\n\n this.xhr.onResponse = callback => {\n addOnResponseHook(this.xhr, callback);\n };\n /**\n * Deletes a player onRequest callback if it exists\n *\n * @param {function} callback to delete from the player set\n */\n\n this.xhr.offRequest = callback => {\n removeOnRequestHook(this.xhr, callback);\n };\n /**\n * Deletes a player onResponse callback if it exists\n *\n * @param {function} callback to delete from the player set\n */\n\n this.xhr.offResponse = callback => {\n removeOnResponseHook(this.xhr, callback);\n }; // Trigger an event on the player to notify the user that vhs is ready to set xhr hooks.\n // This allows hooks to be set before the source is set to vhs when handleSource is called.\n\n this.player_.trigger('xhr-hooks-ready');\n }\n}\n/**\n * The Source Handler object, which informs video.js what additional\n * MIME types are supported and sets up playback. It is registered\n * automatically to the appropriate tech based on the capabilities of\n * the browser it is running in. It is not necessary to use or modify\n * this object in normal usage.\n */\n\nconst VhsSourceHandler = {\n name: 'videojs-http-streaming',\n VERSION: version$4,\n canHandleSource(srcObj, options = {}) {\n const localOptions = merge(videojs.options, options);\n return VhsSourceHandler.canPlayType(srcObj.type, localOptions);\n },\n handleSource(source, tech, options = {}) {\n const localOptions = merge(videojs.options, options);\n tech.vhs = new VhsHandler(source, tech, localOptions);\n tech.vhs.xhr = xhrFactory();\n tech.vhs.setupXhrHooks_();\n tech.vhs.src(source.src, source.type);\n return tech.vhs;\n },\n canPlayType(type, options) {\n const simpleType = simpleTypeFromSourceType(type);\n if (!simpleType) {\n return '';\n }\n const overrideNative = VhsSourceHandler.getOverrideNative(options);\n const supportsTypeNatively = Vhs.supportsTypeNatively(simpleType);\n const canUseMsePlayback = !supportsTypeNatively || overrideNative;\n return canUseMsePlayback ? 'maybe' : '';\n },\n getOverrideNative(options = {}) {\n const {\n vhs = {}\n } = options;\n const defaultOverrideNative = !(videojs.browser.IS_ANY_SAFARI || videojs.browser.IS_IOS);\n const {\n overrideNative = defaultOverrideNative\n } = vhs;\n return overrideNative;\n }\n};\n/**\n * Check to see if the native MediaSource object exists and supports\n * an MP4 container with both H.264 video and AAC-LC audio.\n *\n * @return {boolean} if native media sources are supported\n */\n\nconst supportsNativeMediaSources = () => {\n return browserSupportsCodec('avc1.4d400d,mp4a.40.2');\n}; // register source handlers with the appropriate techs\n\nif (supportsNativeMediaSources()) {\n videojs.getTech('Html5').registerSourceHandler(VhsSourceHandler, 0);\n}\nvideojs.VhsHandler = VhsHandler;\nvideojs.VhsSourceHandler = VhsSourceHandler;\nvideojs.Vhs = Vhs;\nif (!videojs.use) {\n videojs.registerComponent('Vhs', Vhs);\n}\nvideojs.options.vhs = videojs.options.vhs || {};\nif (!videojs.getPlugin || !videojs.getPlugin('reloadSourceOnError')) {\n videojs.registerPlugin('reloadSourceOnError', reloadSourceOnError);\n}\n\nexport { videojs as default };\n","import window from 'global/window'; // const log2 = Math.log2 ? Math.log2 : (x) => (Math.log(x) / Math.log(2));\n\nvar repeat = function repeat(str, len) {\n var acc = '';\n\n while (len--) {\n acc += str;\n }\n\n return acc;\n}; // count the number of bits it would take to represent a number\n// we used to do this with log2 but BigInt does not support builtin math\n// Math.ceil(log2(x));\n\n\nexport var countBits = function countBits(x) {\n return x.toString(2).length;\n}; // count the number of whole bytes it would take to represent a number\n\nexport var countBytes = function countBytes(x) {\n return Math.ceil(countBits(x) / 8);\n};\nexport var padStart = function padStart(b, len, str) {\n if (str === void 0) {\n str = ' ';\n }\n\n return (repeat(str, len) + b.toString()).slice(-len);\n};\nexport var isArrayBufferView = function isArrayBufferView(obj) {\n if (ArrayBuffer.isView === 'function') {\n return ArrayBuffer.isView(obj);\n }\n\n return obj && obj.buffer instanceof ArrayBuffer;\n};\nexport var isTypedArray = function isTypedArray(obj) {\n return isArrayBufferView(obj);\n};\nexport var toUint8 = function toUint8(bytes) {\n if (bytes instanceof Uint8Array) {\n return bytes;\n }\n\n if (!Array.isArray(bytes) && !isTypedArray(bytes) && !(bytes instanceof ArrayBuffer)) {\n // any non-number or NaN leads to empty uint8array\n // eslint-disable-next-line\n if (typeof bytes !== 'number' || typeof bytes === 'number' && bytes !== bytes) {\n bytes = 0;\n } else {\n bytes = [bytes];\n }\n }\n\n return new Uint8Array(bytes && bytes.buffer || bytes, bytes && bytes.byteOffset || 0, bytes && bytes.byteLength || 0);\n};\nexport var toHexString = function toHexString(bytes) {\n bytes = toUint8(bytes);\n var str = '';\n\n for (var i = 0; i < bytes.length; i++) {\n str += padStart(bytes[i].toString(16), 2, '0');\n }\n\n return str;\n};\nexport var toBinaryString = function toBinaryString(bytes) {\n bytes = toUint8(bytes);\n var str = '';\n\n for (var i = 0; i < bytes.length; i++) {\n str += padStart(bytes[i].toString(2), 8, '0');\n }\n\n return str;\n};\nvar BigInt = window.BigInt || Number;\nvar BYTE_TABLE = [BigInt('0x1'), BigInt('0x100'), BigInt('0x10000'), BigInt('0x1000000'), BigInt('0x100000000'), BigInt('0x10000000000'), BigInt('0x1000000000000'), BigInt('0x100000000000000'), BigInt('0x10000000000000000')];\nexport var ENDIANNESS = function () {\n var a = new Uint16Array([0xFFCC]);\n var b = new Uint8Array(a.buffer, a.byteOffset, a.byteLength);\n\n if (b[0] === 0xFF) {\n return 'big';\n }\n\n if (b[0] === 0xCC) {\n return 'little';\n }\n\n return 'unknown';\n}();\nexport var IS_BIG_ENDIAN = ENDIANNESS === 'big';\nexport var IS_LITTLE_ENDIAN = ENDIANNESS === 'little';\nexport var bytesToNumber = function bytesToNumber(bytes, _temp) {\n var _ref = _temp === void 0 ? {} : _temp,\n _ref$signed = _ref.signed,\n signed = _ref$signed === void 0 ? false : _ref$signed,\n _ref$le = _ref.le,\n le = _ref$le === void 0 ? false : _ref$le;\n\n bytes = toUint8(bytes);\n var fn = le ? 'reduce' : 'reduceRight';\n var obj = bytes[fn] ? bytes[fn] : Array.prototype[fn];\n var number = obj.call(bytes, function (total, byte, i) {\n var exponent = le ? i : Math.abs(i + 1 - bytes.length);\n return total + BigInt(byte) * BYTE_TABLE[exponent];\n }, BigInt(0));\n\n if (signed) {\n var max = BYTE_TABLE[bytes.length] / BigInt(2) - BigInt(1);\n number = BigInt(number);\n\n if (number > max) {\n number -= max;\n number -= max;\n number -= BigInt(2);\n }\n }\n\n return Number(number);\n};\nexport var numberToBytes = function numberToBytes(number, _temp2) {\n var _ref2 = _temp2 === void 0 ? {} : _temp2,\n _ref2$le = _ref2.le,\n le = _ref2$le === void 0 ? false : _ref2$le;\n\n // eslint-disable-next-line\n if (typeof number !== 'bigint' && typeof number !== 'number' || typeof number === 'number' && number !== number) {\n number = 0;\n }\n\n number = BigInt(number);\n var byteCount = countBytes(number);\n var bytes = new Uint8Array(new ArrayBuffer(byteCount));\n\n for (var i = 0; i < byteCount; i++) {\n var byteIndex = le ? i : Math.abs(i + 1 - bytes.length);\n bytes[byteIndex] = Number(number / BYTE_TABLE[i] & BigInt(0xFF));\n\n if (number < 0) {\n bytes[byteIndex] = Math.abs(~bytes[byteIndex]);\n bytes[byteIndex] -= i === 0 ? 1 : 2;\n }\n }\n\n return bytes;\n};\nexport var bytesToString = function bytesToString(bytes) {\n if (!bytes) {\n return '';\n } // TODO: should toUint8 handle cases where we only have 8 bytes\n // but report more since this is a Uint16+ Array?\n\n\n bytes = Array.prototype.slice.call(bytes);\n var string = String.fromCharCode.apply(null, toUint8(bytes));\n\n try {\n return decodeURIComponent(escape(string));\n } catch (e) {// if decodeURIComponent/escape fails, we are dealing with partial\n // or full non string data. Just return the potentially garbled string.\n }\n\n return string;\n};\nexport var stringToBytes = function stringToBytes(string, stringIsBytes) {\n if (typeof string !== 'string' && string && typeof string.toString === 'function') {\n string = string.toString();\n }\n\n if (typeof string !== 'string') {\n return new Uint8Array();\n } // If the string already is bytes, we don't have to do this\n // otherwise we do this so that we split multi length characters\n // into individual bytes\n\n\n if (!stringIsBytes) {\n string = unescape(encodeURIComponent(string));\n }\n\n var view = new Uint8Array(string.length);\n\n for (var i = 0; i < string.length; i++) {\n view[i] = string.charCodeAt(i);\n }\n\n return view;\n};\nexport var concatTypedArrays = function concatTypedArrays() {\n for (var _len = arguments.length, buffers = new Array(_len), _key = 0; _key < _len; _key++) {\n buffers[_key] = arguments[_key];\n }\n\n buffers = buffers.filter(function (b) {\n return b && (b.byteLength || b.length) && typeof b !== 'string';\n });\n\n if (buffers.length <= 1) {\n // for 0 length we will return empty uint8\n // for 1 length we return the first uint8\n return toUint8(buffers[0]);\n }\n\n var totalLen = buffers.reduce(function (total, buf, i) {\n return total + (buf.byteLength || buf.length);\n }, 0);\n var tempBuffer = new Uint8Array(totalLen);\n var offset = 0;\n buffers.forEach(function (buf) {\n buf = toUint8(buf);\n tempBuffer.set(buf, offset);\n offset += buf.byteLength;\n });\n return tempBuffer;\n};\n/**\n * Check if the bytes \"b\" are contained within bytes \"a\".\n *\n * @param {Uint8Array|Array} a\n * Bytes to check in\n *\n * @param {Uint8Array|Array} b\n * Bytes to check for\n *\n * @param {Object} options\n * options\n *\n * @param {Array|Uint8Array} [offset=0]\n * offset to use when looking at bytes in a\n *\n * @param {Array|Uint8Array} [mask=[]]\n * mask to use on bytes before comparison.\n *\n * @return {boolean}\n * If all bytes in b are inside of a, taking into account\n * bit masks.\n */\n\nexport var bytesMatch = function bytesMatch(a, b, _temp3) {\n var _ref3 = _temp3 === void 0 ? {} : _temp3,\n _ref3$offset = _ref3.offset,\n offset = _ref3$offset === void 0 ? 0 : _ref3$offset,\n _ref3$mask = _ref3.mask,\n mask = _ref3$mask === void 0 ? [] : _ref3$mask;\n\n a = toUint8(a);\n b = toUint8(b); // ie 11 does not support uint8 every\n\n var fn = b.every ? b.every : Array.prototype.every;\n return b.length && a.length - offset >= b.length && // ie 11 doesn't support every on uin8\n fn.call(b, function (bByte, i) {\n var aByte = mask[i] ? mask[i] & a[offset + i] : a[offset + i];\n return bByte === aByte;\n });\n};\nexport var sliceBytes = function sliceBytes(src, start, end) {\n if (Uint8Array.prototype.slice) {\n return Uint8Array.prototype.slice.call(src, start, end);\n }\n\n return new Uint8Array(Array.prototype.slice.call(src, start, end));\n};\nexport var reverseBytes = function reverseBytes(src) {\n if (src.reverse) {\n return src.reverse();\n }\n\n return Array.prototype.reverse.call(src);\n};","import { padStart, toHexString, toBinaryString } from './byte-helpers.js'; // https://aomediacodec.github.io/av1-isobmff/#av1codecconfigurationbox-syntax\n// https://developer.mozilla.org/en-US/docs/Web/Media/Formats/codecs_parameter#AV1\n\nexport var getAv1Codec = function getAv1Codec(bytes) {\n var codec = '';\n var profile = bytes[1] >>> 3;\n var level = bytes[1] & 0x1F;\n var tier = bytes[2] >>> 7;\n var highBitDepth = (bytes[2] & 0x40) >> 6;\n var twelveBit = (bytes[2] & 0x20) >> 5;\n var monochrome = (bytes[2] & 0x10) >> 4;\n var chromaSubsamplingX = (bytes[2] & 0x08) >> 3;\n var chromaSubsamplingY = (bytes[2] & 0x04) >> 2;\n var chromaSamplePosition = bytes[2] & 0x03;\n codec += profile + \".\" + padStart(level, 2, '0');\n\n if (tier === 0) {\n codec += 'M';\n } else if (tier === 1) {\n codec += 'H';\n }\n\n var bitDepth;\n\n if (profile === 2 && highBitDepth) {\n bitDepth = twelveBit ? 12 : 10;\n } else {\n bitDepth = highBitDepth ? 10 : 8;\n }\n\n codec += \".\" + padStart(bitDepth, 2, '0'); // TODO: can we parse color range??\n\n codec += \".\" + monochrome;\n codec += \".\" + chromaSubsamplingX + chromaSubsamplingY + chromaSamplePosition;\n return codec;\n};\nexport var getAvcCodec = function getAvcCodec(bytes) {\n var profileId = toHexString(bytes[1]);\n var constraintFlags = toHexString(bytes[2] & 0xFC);\n var levelId = toHexString(bytes[3]);\n return \"\" + profileId + constraintFlags + levelId;\n};\nexport var getHvcCodec = function getHvcCodec(bytes) {\n var codec = '';\n var profileSpace = bytes[1] >> 6;\n var profileId = bytes[1] & 0x1F;\n var tierFlag = (bytes[1] & 0x20) >> 5;\n var profileCompat = bytes.subarray(2, 6);\n var constraintIds = bytes.subarray(6, 12);\n var levelId = bytes[12];\n\n if (profileSpace === 1) {\n codec += 'A';\n } else if (profileSpace === 2) {\n codec += 'B';\n } else if (profileSpace === 3) {\n codec += 'C';\n }\n\n codec += profileId + \".\"; // ffmpeg does this in big endian\n\n var profileCompatVal = parseInt(toBinaryString(profileCompat).split('').reverse().join(''), 2); // apple does this in little endian...\n\n if (profileCompatVal > 255) {\n profileCompatVal = parseInt(toBinaryString(profileCompat), 2);\n }\n\n codec += profileCompatVal.toString(16) + \".\";\n\n if (tierFlag === 0) {\n codec += 'L';\n } else {\n codec += 'H';\n }\n\n codec += levelId;\n var constraints = '';\n\n for (var i = 0; i < constraintIds.length; i++) {\n var v = constraintIds[i];\n\n if (v) {\n if (constraints) {\n constraints += '.';\n }\n\n constraints += v.toString(16);\n }\n }\n\n if (constraints) {\n codec += \".\" + constraints;\n }\n\n return codec;\n};","import window from 'global/window';\nvar regexs = {\n // to determine mime types\n mp4: /^(av0?1|avc0?[1234]|vp0?9|flac|opus|mp3|mp4a|mp4v|stpp.ttml.im1t)/,\n webm: /^(vp0?[89]|av0?1|opus|vorbis)/,\n ogg: /^(vp0?[89]|theora|flac|opus|vorbis)/,\n // to determine if a codec is audio or video\n video: /^(av0?1|avc0?[1234]|vp0?[89]|hvc1|hev1|theora|mp4v)/,\n audio: /^(mp4a|flac|vorbis|opus|ac-[34]|ec-3|alac|mp3|speex|aac)/,\n text: /^(stpp.ttml.im1t)/,\n // mux.js support regex\n muxerVideo: /^(avc0?1)/,\n muxerAudio: /^(mp4a)/,\n // match nothing as muxer does not support text right now.\n // there cannot never be a character before the start of a string\n // so this matches nothing.\n muxerText: /a^/\n};\nvar mediaTypes = ['video', 'audio', 'text'];\nvar upperMediaTypes = ['Video', 'Audio', 'Text'];\n/**\n * Replace the old apple-style `avc1.
.
` codec string with the standard\n * `avc1.`\n *\n * @param {string} codec\n * Codec string to translate\n * @return {string}\n * The translated codec string\n */\n\nexport var translateLegacyCodec = function translateLegacyCodec(codec) {\n if (!codec) {\n return codec;\n }\n\n return codec.replace(/avc1\\.(\\d+)\\.(\\d+)/i, function (orig, profile, avcLevel) {\n var profileHex = ('00' + Number(profile).toString(16)).slice(-2);\n var avcLevelHex = ('00' + Number(avcLevel).toString(16)).slice(-2);\n return 'avc1.' + profileHex + '00' + avcLevelHex;\n });\n};\n/**\n * Replace the old apple-style `avc1.
.
` codec strings with the standard\n * `avc1.`\n *\n * @param {string[]} codecs\n * An array of codec strings to translate\n * @return {string[]}\n * The translated array of codec strings\n */\n\nexport var translateLegacyCodecs = function translateLegacyCodecs(codecs) {\n return codecs.map(translateLegacyCodec);\n};\n/**\n * Replace codecs in the codec string with the old apple-style `avc1.
.
` to the\n * standard `avc1.`.\n *\n * @param {string} codecString\n * The codec string\n * @return {string}\n * The codec string with old apple-style codecs replaced\n *\n * @private\n */\n\nexport var mapLegacyAvcCodecs = function mapLegacyAvcCodecs(codecString) {\n return codecString.replace(/avc1\\.(\\d+)\\.(\\d+)/i, function (match) {\n return translateLegacyCodecs([match])[0];\n });\n};\n/**\n * @typedef {Object} ParsedCodecInfo\n * @property {number} codecCount\n * Number of codecs parsed\n * @property {string} [videoCodec]\n * Parsed video codec (if found)\n * @property {string} [videoObjectTypeIndicator]\n * Video object type indicator (if found)\n * @property {string|null} audioProfile\n * Audio profile\n */\n\n/**\n * Parses a codec string to retrieve the number of codecs specified, the video codec and\n * object type indicator, and the audio profile.\n *\n * @param {string} [codecString]\n * The codec string to parse\n * @return {ParsedCodecInfo}\n * Parsed codec info\n */\n\nexport var parseCodecs = function parseCodecs(codecString) {\n if (codecString === void 0) {\n codecString = '';\n }\n\n var codecs = codecString.split(',');\n var result = [];\n codecs.forEach(function (codec) {\n codec = codec.trim();\n var codecType;\n mediaTypes.forEach(function (name) {\n var match = regexs[name].exec(codec.toLowerCase());\n\n if (!match || match.length <= 1) {\n return;\n }\n\n codecType = name; // maintain codec case\n\n var type = codec.substring(0, match[1].length);\n var details = codec.replace(type, '');\n result.push({\n type: type,\n details: details,\n mediaType: name\n });\n });\n\n if (!codecType) {\n result.push({\n type: codec,\n details: '',\n mediaType: 'unknown'\n });\n }\n });\n return result;\n};\n/**\n * Returns a ParsedCodecInfo object for the default alternate audio playlist if there is\n * a default alternate audio playlist for the provided audio group.\n *\n * @param {Object} master\n * The master playlist\n * @param {string} audioGroupId\n * ID of the audio group for which to find the default codec info\n * @return {ParsedCodecInfo}\n * Parsed codec info\n */\n\nexport var codecsFromDefault = function codecsFromDefault(master, audioGroupId) {\n if (!master.mediaGroups.AUDIO || !audioGroupId) {\n return null;\n }\n\n var audioGroup = master.mediaGroups.AUDIO[audioGroupId];\n\n if (!audioGroup) {\n return null;\n }\n\n for (var name in audioGroup) {\n var audioType = audioGroup[name];\n\n if (audioType.default && audioType.playlists) {\n // codec should be the same for all playlists within the audio type\n return parseCodecs(audioType.playlists[0].attributes.CODECS);\n }\n }\n\n return null;\n};\nexport var isVideoCodec = function isVideoCodec(codec) {\n if (codec === void 0) {\n codec = '';\n }\n\n return regexs.video.test(codec.trim().toLowerCase());\n};\nexport var isAudioCodec = function isAudioCodec(codec) {\n if (codec === void 0) {\n codec = '';\n }\n\n return regexs.audio.test(codec.trim().toLowerCase());\n};\nexport var isTextCodec = function isTextCodec(codec) {\n if (codec === void 0) {\n codec = '';\n }\n\n return regexs.text.test(codec.trim().toLowerCase());\n};\nexport var getMimeForCodec = function getMimeForCodec(codecString) {\n if (!codecString || typeof codecString !== 'string') {\n return;\n }\n\n var codecs = codecString.toLowerCase().split(',').map(function (c) {\n return translateLegacyCodec(c.trim());\n }); // default to video type\n\n var type = 'video'; // only change to audio type if the only codec we have is\n // audio\n\n if (codecs.length === 1 && isAudioCodec(codecs[0])) {\n type = 'audio';\n } else if (codecs.length === 1 && isTextCodec(codecs[0])) {\n // text uses application/ for now\n type = 'application';\n } // default the container to mp4\n\n\n var container = 'mp4'; // every codec must be able to go into the container\n // for that container to be the correct one\n\n if (codecs.every(function (c) {\n return regexs.mp4.test(c);\n })) {\n container = 'mp4';\n } else if (codecs.every(function (c) {\n return regexs.webm.test(c);\n })) {\n container = 'webm';\n } else if (codecs.every(function (c) {\n return regexs.ogg.test(c);\n })) {\n container = 'ogg';\n }\n\n return type + \"/\" + container + \";codecs=\\\"\" + codecString + \"\\\"\";\n};\nexport var browserSupportsCodec = function browserSupportsCodec(codecString) {\n if (codecString === void 0) {\n codecString = '';\n }\n\n return window.MediaSource && window.MediaSource.isTypeSupported && window.MediaSource.isTypeSupported(getMimeForCodec(codecString)) || false;\n};\nexport var muxerSupportsCodec = function muxerSupportsCodec(codecString) {\n if (codecString === void 0) {\n codecString = '';\n }\n\n return codecString.toLowerCase().split(',').every(function (codec) {\n codec = codec.trim(); // any match is supported.\n\n for (var i = 0; i < upperMediaTypes.length; i++) {\n var type = upperMediaTypes[i];\n\n if (regexs[\"muxer\" + type].test(codec)) {\n return true;\n }\n }\n\n return false;\n });\n};\nexport var DEFAULT_AUDIO_CODEC = 'mp4a.40.2';\nexport var DEFAULT_VIDEO_CODEC = 'avc1.4d400d';","import { toUint8, bytesMatch } from './byte-helpers.js';\nimport { findBox } from './mp4-helpers.js';\nimport { findEbml, EBML_TAGS } from './ebml-helpers.js';\nimport { getId3Offset } from './id3-helpers.js';\nimport { findH264Nal, findH265Nal } from './nal-helpers.js';\nvar CONSTANTS = {\n // \"webm\" string literal in hex\n 'webm': toUint8([0x77, 0x65, 0x62, 0x6d]),\n // \"matroska\" string literal in hex\n 'matroska': toUint8([0x6d, 0x61, 0x74, 0x72, 0x6f, 0x73, 0x6b, 0x61]),\n // \"fLaC\" string literal in hex\n 'flac': toUint8([0x66, 0x4c, 0x61, 0x43]),\n // \"OggS\" string literal in hex\n 'ogg': toUint8([0x4f, 0x67, 0x67, 0x53]),\n // ac-3 sync byte, also works for ec-3 as that is simply a codec\n // of ac-3\n 'ac3': toUint8([0x0b, 0x77]),\n // \"RIFF\" string literal in hex used for wav and avi\n 'riff': toUint8([0x52, 0x49, 0x46, 0x46]),\n // \"AVI\" string literal in hex\n 'avi': toUint8([0x41, 0x56, 0x49]),\n // \"WAVE\" string literal in hex\n 'wav': toUint8([0x57, 0x41, 0x56, 0x45]),\n // \"ftyp3g\" string literal in hex\n '3gp': toUint8([0x66, 0x74, 0x79, 0x70, 0x33, 0x67]),\n // \"ftyp\" string literal in hex\n 'mp4': toUint8([0x66, 0x74, 0x79, 0x70]),\n // \"styp\" string literal in hex\n 'fmp4': toUint8([0x73, 0x74, 0x79, 0x70]),\n // \"ftypqt\" string literal in hex\n 'mov': toUint8([0x66, 0x74, 0x79, 0x70, 0x71, 0x74]),\n // moov string literal in hex\n 'moov': toUint8([0x6D, 0x6F, 0x6F, 0x76]),\n // moof string literal in hex\n 'moof': toUint8([0x6D, 0x6F, 0x6F, 0x66])\n};\nvar _isLikely = {\n aac: function aac(bytes) {\n var offset = getId3Offset(bytes);\n return bytesMatch(bytes, [0xFF, 0x10], {\n offset: offset,\n mask: [0xFF, 0x16]\n });\n },\n mp3: function mp3(bytes) {\n var offset = getId3Offset(bytes);\n return bytesMatch(bytes, [0xFF, 0x02], {\n offset: offset,\n mask: [0xFF, 0x06]\n });\n },\n webm: function webm(bytes) {\n var docType = findEbml(bytes, [EBML_TAGS.EBML, EBML_TAGS.DocType])[0]; // check if DocType EBML tag is webm\n\n return bytesMatch(docType, CONSTANTS.webm);\n },\n mkv: function mkv(bytes) {\n var docType = findEbml(bytes, [EBML_TAGS.EBML, EBML_TAGS.DocType])[0]; // check if DocType EBML tag is matroska\n\n return bytesMatch(docType, CONSTANTS.matroska);\n },\n mp4: function mp4(bytes) {\n // if this file is another base media file format, it is not mp4\n if (_isLikely['3gp'](bytes) || _isLikely.mov(bytes)) {\n return false;\n } // if this file starts with a ftyp or styp box its mp4\n\n\n if (bytesMatch(bytes, CONSTANTS.mp4, {\n offset: 4\n }) || bytesMatch(bytes, CONSTANTS.fmp4, {\n offset: 4\n })) {\n return true;\n } // if this file starts with a moof/moov box its mp4\n\n\n if (bytesMatch(bytes, CONSTANTS.moof, {\n offset: 4\n }) || bytesMatch(bytes, CONSTANTS.moov, {\n offset: 4\n })) {\n return true;\n }\n },\n mov: function mov(bytes) {\n return bytesMatch(bytes, CONSTANTS.mov, {\n offset: 4\n });\n },\n '3gp': function gp(bytes) {\n return bytesMatch(bytes, CONSTANTS['3gp'], {\n offset: 4\n });\n },\n ac3: function ac3(bytes) {\n var offset = getId3Offset(bytes);\n return bytesMatch(bytes, CONSTANTS.ac3, {\n offset: offset\n });\n },\n ts: function ts(bytes) {\n if (bytes.length < 189 && bytes.length >= 1) {\n return bytes[0] === 0x47;\n }\n\n var i = 0; // check the first 376 bytes for two matching sync bytes\n\n while (i + 188 < bytes.length && i < 188) {\n if (bytes[i] === 0x47 && bytes[i + 188] === 0x47) {\n return true;\n }\n\n i += 1;\n }\n\n return false;\n },\n flac: function flac(bytes) {\n var offset = getId3Offset(bytes);\n return bytesMatch(bytes, CONSTANTS.flac, {\n offset: offset\n });\n },\n ogg: function ogg(bytes) {\n return bytesMatch(bytes, CONSTANTS.ogg);\n },\n avi: function avi(bytes) {\n return bytesMatch(bytes, CONSTANTS.riff) && bytesMatch(bytes, CONSTANTS.avi, {\n offset: 8\n });\n },\n wav: function wav(bytes) {\n return bytesMatch(bytes, CONSTANTS.riff) && bytesMatch(bytes, CONSTANTS.wav, {\n offset: 8\n });\n },\n 'h264': function h264(bytes) {\n // find seq_parameter_set_rbsp\n return findH264Nal(bytes, 7, 3).length;\n },\n 'h265': function h265(bytes) {\n // find video_parameter_set_rbsp or seq_parameter_set_rbsp\n return findH265Nal(bytes, [32, 33], 3).length;\n }\n}; // get all the isLikely functions\n// but make sure 'ts' is above h264 and h265\n// but below everything else as it is the least specific\n\nvar isLikelyTypes = Object.keys(_isLikely) // remove ts, h264, h265\n.filter(function (t) {\n return t !== 'ts' && t !== 'h264' && t !== 'h265';\n}) // add it back to the bottom\n.concat(['ts', 'h264', 'h265']); // make sure we are dealing with uint8 data.\n\nisLikelyTypes.forEach(function (type) {\n var isLikelyFn = _isLikely[type];\n\n _isLikely[type] = function (bytes) {\n return isLikelyFn(toUint8(bytes));\n };\n}); // export after wrapping\n\nexport var isLikely = _isLikely; // A useful list of file signatures can be found here\n// https://en.wikipedia.org/wiki/List_of_file_signatures\n\nexport var detectContainerForBytes = function detectContainerForBytes(bytes) {\n bytes = toUint8(bytes);\n\n for (var i = 0; i < isLikelyTypes.length; i++) {\n var type = isLikelyTypes[i];\n\n if (isLikely[type](bytes)) {\n return type;\n }\n }\n\n return '';\n}; // fmp4 is not a container\n\nexport var isLikelyFmp4MediaSegment = function isLikelyFmp4MediaSegment(bytes) {\n return findBox(bytes, ['moof']).length > 0;\n};","import { toUint8, bytesToNumber, bytesMatch, bytesToString, numberToBytes, padStart } from './byte-helpers';\nimport { getAvcCodec, getHvcCodec, getAv1Codec } from './codec-helpers.js'; // relevant specs for this parser:\n// https://matroska-org.github.io/libebml/specs.html\n// https://www.matroska.org/technical/elements.html\n// https://www.webmproject.org/docs/container/\n\nexport var EBML_TAGS = {\n EBML: toUint8([0x1A, 0x45, 0xDF, 0xA3]),\n DocType: toUint8([0x42, 0x82]),\n Segment: toUint8([0x18, 0x53, 0x80, 0x67]),\n SegmentInfo: toUint8([0x15, 0x49, 0xA9, 0x66]),\n Tracks: toUint8([0x16, 0x54, 0xAE, 0x6B]),\n Track: toUint8([0xAE]),\n TrackNumber: toUint8([0xd7]),\n DefaultDuration: toUint8([0x23, 0xe3, 0x83]),\n TrackEntry: toUint8([0xAE]),\n TrackType: toUint8([0x83]),\n FlagDefault: toUint8([0x88]),\n CodecID: toUint8([0x86]),\n CodecPrivate: toUint8([0x63, 0xA2]),\n VideoTrack: toUint8([0xe0]),\n AudioTrack: toUint8([0xe1]),\n // Not used yet, but will be used for live webm/mkv\n // see https://www.matroska.org/technical/basics.html#block-structure\n // see https://www.matroska.org/technical/basics.html#simpleblock-structure\n Cluster: toUint8([0x1F, 0x43, 0xB6, 0x75]),\n Timestamp: toUint8([0xE7]),\n TimestampScale: toUint8([0x2A, 0xD7, 0xB1]),\n BlockGroup: toUint8([0xA0]),\n BlockDuration: toUint8([0x9B]),\n Block: toUint8([0xA1]),\n SimpleBlock: toUint8([0xA3])\n};\n/**\n * This is a simple table to determine the length\n * of things in ebml. The length is one based (starts at 1,\n * rather than zero) and for every zero bit before a one bit\n * we add one to length. We also need this table because in some\n * case we have to xor all the length bits from another value.\n */\n\nvar LENGTH_TABLE = [128, 64, 32, 16, 8, 4, 2, 1];\n\nvar getLength = function getLength(byte) {\n var len = 1;\n\n for (var i = 0; i < LENGTH_TABLE.length; i++) {\n if (byte & LENGTH_TABLE[i]) {\n break;\n }\n\n len++;\n }\n\n return len;\n}; // length in ebml is stored in the first 4 to 8 bits\n// of the first byte. 4 for the id length and 8 for the\n// data size length. Length is measured by converting the number to binary\n// then 1 + the number of zeros before a 1 is encountered starting\n// from the left.\n\n\nvar getvint = function getvint(bytes, offset, removeLength, signed) {\n if (removeLength === void 0) {\n removeLength = true;\n }\n\n if (signed === void 0) {\n signed = false;\n }\n\n var length = getLength(bytes[offset]);\n var valueBytes = bytes.subarray(offset, offset + length); // NOTE that we do **not** subarray here because we need to copy these bytes\n // as they will be modified below to remove the dataSizeLen bits and we do not\n // want to modify the original data. normally we could just call slice on\n // uint8array but ie 11 does not support that...\n\n if (removeLength) {\n valueBytes = Array.prototype.slice.call(bytes, offset, offset + length);\n valueBytes[0] ^= LENGTH_TABLE[length - 1];\n }\n\n return {\n length: length,\n value: bytesToNumber(valueBytes, {\n signed: signed\n }),\n bytes: valueBytes\n };\n};\n\nvar normalizePath = function normalizePath(path) {\n if (typeof path === 'string') {\n return path.match(/.{1,2}/g).map(function (p) {\n return normalizePath(p);\n });\n }\n\n if (typeof path === 'number') {\n return numberToBytes(path);\n }\n\n return path;\n};\n\nvar normalizePaths = function normalizePaths(paths) {\n if (!Array.isArray(paths)) {\n return [normalizePath(paths)];\n }\n\n return paths.map(function (p) {\n return normalizePath(p);\n });\n};\n\nvar getInfinityDataSize = function getInfinityDataSize(id, bytes, offset) {\n if (offset >= bytes.length) {\n return bytes.length;\n }\n\n var innerid = getvint(bytes, offset, false);\n\n if (bytesMatch(id.bytes, innerid.bytes)) {\n return offset;\n }\n\n var dataHeader = getvint(bytes, offset + innerid.length);\n return getInfinityDataSize(id, bytes, offset + dataHeader.length + dataHeader.value + innerid.length);\n};\n/**\n * Notes on the EBLM format.\n *\n * EBLM uses \"vints\" tags. Every vint tag contains\n * two parts\n *\n * 1. The length from the first byte. You get this by\n * converting the byte to binary and counting the zeros\n * before a 1. Then you add 1 to that. Examples\n * 00011111 = length 4 because there are 3 zeros before a 1.\n * 00100000 = length 3 because there are 2 zeros before a 1.\n * 00000011 = length 7 because there are 6 zeros before a 1.\n *\n * 2. The bits used for length are removed from the first byte\n * Then all the bytes are merged into a value. NOTE: this\n * is not the case for id ebml tags as there id includes\n * length bits.\n *\n */\n\n\nexport var findEbml = function findEbml(bytes, paths) {\n paths = normalizePaths(paths);\n bytes = toUint8(bytes);\n var results = [];\n\n if (!paths.length) {\n return results;\n }\n\n var i = 0;\n\n while (i < bytes.length) {\n var id = getvint(bytes, i, false);\n var dataHeader = getvint(bytes, i + id.length);\n var dataStart = i + id.length + dataHeader.length; // dataSize is unknown or this is a live stream\n\n if (dataHeader.value === 0x7f) {\n dataHeader.value = getInfinityDataSize(id, bytes, dataStart);\n\n if (dataHeader.value !== bytes.length) {\n dataHeader.value -= dataStart;\n }\n }\n\n var dataEnd = dataStart + dataHeader.value > bytes.length ? bytes.length : dataStart + dataHeader.value;\n var data = bytes.subarray(dataStart, dataEnd);\n\n if (bytesMatch(paths[0], id.bytes)) {\n if (paths.length === 1) {\n // this is the end of the paths and we've found the tag we were\n // looking for\n results.push(data);\n } else {\n // recursively search for the next tag inside of the data\n // of this one\n results = results.concat(findEbml(data, paths.slice(1)));\n }\n }\n\n var totalLength = id.length + dataHeader.length + data.length; // move past this tag entirely, we are not looking for it\n\n i += totalLength;\n }\n\n return results;\n}; // see https://www.matroska.org/technical/basics.html#block-structure\n\nexport var decodeBlock = function decodeBlock(block, type, timestampScale, clusterTimestamp) {\n var duration;\n\n if (type === 'group') {\n duration = findEbml(block, [EBML_TAGS.BlockDuration])[0];\n\n if (duration) {\n duration = bytesToNumber(duration);\n duration = 1 / timestampScale * duration * timestampScale / 1000;\n }\n\n block = findEbml(block, [EBML_TAGS.Block])[0];\n type = 'block'; // treat data as a block after this point\n }\n\n var dv = new DataView(block.buffer, block.byteOffset, block.byteLength);\n var trackNumber = getvint(block, 0);\n var timestamp = dv.getInt16(trackNumber.length, false);\n var flags = block[trackNumber.length + 2];\n var data = block.subarray(trackNumber.length + 3); // pts/dts in seconds\n\n var ptsdts = 1 / timestampScale * (clusterTimestamp + timestamp) * timestampScale / 1000; // return the frame\n\n var parsed = {\n duration: duration,\n trackNumber: trackNumber.value,\n keyframe: type === 'simple' && flags >> 7 === 1,\n invisible: (flags & 0x08) >> 3 === 1,\n lacing: (flags & 0x06) >> 1,\n discardable: type === 'simple' && (flags & 0x01) === 1,\n frames: [],\n pts: ptsdts,\n dts: ptsdts,\n timestamp: timestamp\n };\n\n if (!parsed.lacing) {\n parsed.frames.push(data);\n return parsed;\n }\n\n var numberOfFrames = data[0] + 1;\n var frameSizes = [];\n var offset = 1; // Fixed\n\n if (parsed.lacing === 2) {\n var sizeOfFrame = (data.length - offset) / numberOfFrames;\n\n for (var i = 0; i < numberOfFrames; i++) {\n frameSizes.push(sizeOfFrame);\n }\n } // xiph\n\n\n if (parsed.lacing === 1) {\n for (var _i = 0; _i < numberOfFrames - 1; _i++) {\n var size = 0;\n\n do {\n size += data[offset];\n offset++;\n } while (data[offset - 1] === 0xFF);\n\n frameSizes.push(size);\n }\n } // ebml\n\n\n if (parsed.lacing === 3) {\n // first vint is unsinged\n // after that vints are singed and\n // based on a compounding size\n var _size = 0;\n\n for (var _i2 = 0; _i2 < numberOfFrames - 1; _i2++) {\n var vint = _i2 === 0 ? getvint(data, offset) : getvint(data, offset, true, true);\n _size += vint.value;\n frameSizes.push(_size);\n offset += vint.length;\n }\n }\n\n frameSizes.forEach(function (size) {\n parsed.frames.push(data.subarray(offset, offset + size));\n offset += size;\n });\n return parsed;\n}; // VP9 Codec Feature Metadata (CodecPrivate)\n// https://www.webmproject.org/docs/container/\n\nvar parseVp9Private = function parseVp9Private(bytes) {\n var i = 0;\n var params = {};\n\n while (i < bytes.length) {\n var id = bytes[i] & 0x7f;\n var len = bytes[i + 1];\n var val = void 0;\n\n if (len === 1) {\n val = bytes[i + 2];\n } else {\n val = bytes.subarray(i + 2, i + 2 + len);\n }\n\n if (id === 1) {\n params.profile = val;\n } else if (id === 2) {\n params.level = val;\n } else if (id === 3) {\n params.bitDepth = val;\n } else if (id === 4) {\n params.chromaSubsampling = val;\n } else {\n params[id] = val;\n }\n\n i += 2 + len;\n }\n\n return params;\n};\n\nexport var parseTracks = function parseTracks(bytes) {\n bytes = toUint8(bytes);\n var decodedTracks = [];\n var tracks = findEbml(bytes, [EBML_TAGS.Segment, EBML_TAGS.Tracks, EBML_TAGS.Track]);\n\n if (!tracks.length) {\n tracks = findEbml(bytes, [EBML_TAGS.Tracks, EBML_TAGS.Track]);\n }\n\n if (!tracks.length) {\n tracks = findEbml(bytes, [EBML_TAGS.Track]);\n }\n\n if (!tracks.length) {\n return decodedTracks;\n }\n\n tracks.forEach(function (track) {\n var trackType = findEbml(track, EBML_TAGS.TrackType)[0];\n\n if (!trackType || !trackType.length) {\n return;\n } // 1 is video, 2 is audio, 17 is subtitle\n // other values are unimportant in this context\n\n\n if (trackType[0] === 1) {\n trackType = 'video';\n } else if (trackType[0] === 2) {\n trackType = 'audio';\n } else if (trackType[0] === 17) {\n trackType = 'subtitle';\n } else {\n return;\n } // todo parse language\n\n\n var decodedTrack = {\n rawCodec: bytesToString(findEbml(track, [EBML_TAGS.CodecID])[0]),\n type: trackType,\n codecPrivate: findEbml(track, [EBML_TAGS.CodecPrivate])[0],\n number: bytesToNumber(findEbml(track, [EBML_TAGS.TrackNumber])[0]),\n defaultDuration: bytesToNumber(findEbml(track, [EBML_TAGS.DefaultDuration])[0]),\n default: findEbml(track, [EBML_TAGS.FlagDefault])[0],\n rawData: track\n };\n var codec = '';\n\n if (/V_MPEG4\\/ISO\\/AVC/.test(decodedTrack.rawCodec)) {\n codec = \"avc1.\" + getAvcCodec(decodedTrack.codecPrivate);\n } else if (/V_MPEGH\\/ISO\\/HEVC/.test(decodedTrack.rawCodec)) {\n codec = \"hev1.\" + getHvcCodec(decodedTrack.codecPrivate);\n } else if (/V_MPEG4\\/ISO\\/ASP/.test(decodedTrack.rawCodec)) {\n if (decodedTrack.codecPrivate) {\n codec = 'mp4v.20.' + decodedTrack.codecPrivate[4].toString();\n } else {\n codec = 'mp4v.20.9';\n }\n } else if (/^V_THEORA/.test(decodedTrack.rawCodec)) {\n codec = 'theora';\n } else if (/^V_VP8/.test(decodedTrack.rawCodec)) {\n codec = 'vp8';\n } else if (/^V_VP9/.test(decodedTrack.rawCodec)) {\n if (decodedTrack.codecPrivate) {\n var _parseVp9Private = parseVp9Private(decodedTrack.codecPrivate),\n profile = _parseVp9Private.profile,\n level = _parseVp9Private.level,\n bitDepth = _parseVp9Private.bitDepth,\n chromaSubsampling = _parseVp9Private.chromaSubsampling;\n\n codec = 'vp09.';\n codec += padStart(profile, 2, '0') + \".\";\n codec += padStart(level, 2, '0') + \".\";\n codec += padStart(bitDepth, 2, '0') + \".\";\n codec += \"\" + padStart(chromaSubsampling, 2, '0'); // Video -> Colour -> Ebml name\n\n var matrixCoefficients = findEbml(track, [0xE0, [0x55, 0xB0], [0x55, 0xB1]])[0] || [];\n var videoFullRangeFlag = findEbml(track, [0xE0, [0x55, 0xB0], [0x55, 0xB9]])[0] || [];\n var transferCharacteristics = findEbml(track, [0xE0, [0x55, 0xB0], [0x55, 0xBA]])[0] || [];\n var colourPrimaries = findEbml(track, [0xE0, [0x55, 0xB0], [0x55, 0xBB]])[0] || []; // if we find any optional codec parameter specify them all.\n\n if (matrixCoefficients.length || videoFullRangeFlag.length || transferCharacteristics.length || colourPrimaries.length) {\n codec += \".\" + padStart(colourPrimaries[0], 2, '0');\n codec += \".\" + padStart(transferCharacteristics[0], 2, '0');\n codec += \".\" + padStart(matrixCoefficients[0], 2, '0');\n codec += \".\" + padStart(videoFullRangeFlag[0], 2, '0');\n }\n } else {\n codec = 'vp9';\n }\n } else if (/^V_AV1/.test(decodedTrack.rawCodec)) {\n codec = \"av01.\" + getAv1Codec(decodedTrack.codecPrivate);\n } else if (/A_ALAC/.test(decodedTrack.rawCodec)) {\n codec = 'alac';\n } else if (/A_MPEG\\/L2/.test(decodedTrack.rawCodec)) {\n codec = 'mp2';\n } else if (/A_MPEG\\/L3/.test(decodedTrack.rawCodec)) {\n codec = 'mp3';\n } else if (/^A_AAC/.test(decodedTrack.rawCodec)) {\n if (decodedTrack.codecPrivate) {\n codec = 'mp4a.40.' + (decodedTrack.codecPrivate[0] >>> 3).toString();\n } else {\n codec = 'mp4a.40.2';\n }\n } else if (/^A_AC3/.test(decodedTrack.rawCodec)) {\n codec = 'ac-3';\n } else if (/^A_PCM/.test(decodedTrack.rawCodec)) {\n codec = 'pcm';\n } else if (/^A_MS\\/ACM/.test(decodedTrack.rawCodec)) {\n codec = 'speex';\n } else if (/^A_EAC3/.test(decodedTrack.rawCodec)) {\n codec = 'ec-3';\n } else if (/^A_VORBIS/.test(decodedTrack.rawCodec)) {\n codec = 'vorbis';\n } else if (/^A_FLAC/.test(decodedTrack.rawCodec)) {\n codec = 'flac';\n } else if (/^A_OPUS/.test(decodedTrack.rawCodec)) {\n codec = 'opus';\n }\n\n decodedTrack.codec = codec;\n decodedTracks.push(decodedTrack);\n });\n return decodedTracks.sort(function (a, b) {\n return a.number - b.number;\n });\n};\nexport var parseData = function parseData(data, tracks) {\n var allBlocks = [];\n var segment = findEbml(data, [EBML_TAGS.Segment])[0];\n var timestampScale = findEbml(segment, [EBML_TAGS.SegmentInfo, EBML_TAGS.TimestampScale])[0]; // in nanoseconds, defaults to 1ms\n\n if (timestampScale && timestampScale.length) {\n timestampScale = bytesToNumber(timestampScale);\n } else {\n timestampScale = 1000000;\n }\n\n var clusters = findEbml(segment, [EBML_TAGS.Cluster]);\n\n if (!tracks) {\n tracks = parseTracks(segment);\n }\n\n clusters.forEach(function (cluster, ci) {\n var simpleBlocks = findEbml(cluster, [EBML_TAGS.SimpleBlock]).map(function (b) {\n return {\n type: 'simple',\n data: b\n };\n });\n var blockGroups = findEbml(cluster, [EBML_TAGS.BlockGroup]).map(function (b) {\n return {\n type: 'group',\n data: b\n };\n });\n var timestamp = findEbml(cluster, [EBML_TAGS.Timestamp])[0] || 0;\n\n if (timestamp && timestamp.length) {\n timestamp = bytesToNumber(timestamp);\n } // get all blocks then sort them into the correct order\n\n\n var blocks = simpleBlocks.concat(blockGroups).sort(function (a, b) {\n return a.data.byteOffset - b.data.byteOffset;\n });\n blocks.forEach(function (block, bi) {\n var decoded = decodeBlock(block.data, block.type, timestampScale, timestamp);\n allBlocks.push(decoded);\n });\n });\n return {\n tracks: tracks,\n blocks: allBlocks\n };\n};","import { toUint8, bytesMatch } from './byte-helpers.js';\nvar ID3 = toUint8([0x49, 0x44, 0x33]);\nexport var getId3Size = function getId3Size(bytes, offset) {\n if (offset === void 0) {\n offset = 0;\n }\n\n bytes = toUint8(bytes);\n var flags = bytes[offset + 5];\n var returnSize = bytes[offset + 6] << 21 | bytes[offset + 7] << 14 | bytes[offset + 8] << 7 | bytes[offset + 9];\n var footerPresent = (flags & 16) >> 4;\n\n if (footerPresent) {\n return returnSize + 20;\n }\n\n return returnSize + 10;\n};\nexport var getId3Offset = function getId3Offset(bytes, offset) {\n if (offset === void 0) {\n offset = 0;\n }\n\n bytes = toUint8(bytes);\n\n if (bytes.length - offset < 10 || !bytesMatch(bytes, ID3, {\n offset: offset\n })) {\n return offset;\n }\n\n offset += getId3Size(bytes, offset); // recursive check for id3 tags as some files\n // have multiple ID3 tag sections even though\n // they should not.\n\n return getId3Offset(bytes, offset);\n};","var MPEGURL_REGEX = /^(audio|video|application)\\/(x-|vnd\\.apple\\.)?mpegurl/i;\nvar DASH_REGEX = /^application\\/dash\\+xml/i;\n/**\n * Returns a string that describes the type of source based on a video source object's\n * media type.\n *\n * @see {@link https://dev.w3.org/html5/pf-summary/video.html#dom-source-type|Source Type}\n *\n * @param {string} type\n * Video source object media type\n * @return {('hls'|'dash'|'vhs-json'|null)}\n * VHS source type string\n */\n\nexport var simpleTypeFromSourceType = function simpleTypeFromSourceType(type) {\n if (MPEGURL_REGEX.test(type)) {\n return 'hls';\n }\n\n if (DASH_REGEX.test(type)) {\n return 'dash';\n } // Denotes the special case of a manifest object passed to http-streaming instead of a\n // source URL.\n //\n // See https://en.wikipedia.org/wiki/Media_type for details on specifying media types.\n //\n // In this case, vnd stands for vendor, video.js for the organization, VHS for this\n // project, and the +json suffix identifies the structure of the media type.\n\n\n if (type === 'application/vnd.videojs.vhs+json') {\n return 'vhs-json';\n }\n\n return null;\n};","import { stringToBytes, toUint8, bytesMatch, bytesToString, toHexString, padStart, bytesToNumber } from './byte-helpers.js';\nimport { getAvcCodec, getHvcCodec, getAv1Codec } from './codec-helpers.js';\nimport { parseOpusHead } from './opus-helpers.js';\n\nvar normalizePath = function normalizePath(path) {\n if (typeof path === 'string') {\n return stringToBytes(path);\n }\n\n if (typeof path === 'number') {\n return path;\n }\n\n return path;\n};\n\nvar normalizePaths = function normalizePaths(paths) {\n if (!Array.isArray(paths)) {\n return [normalizePath(paths)];\n }\n\n return paths.map(function (p) {\n return normalizePath(p);\n });\n};\n\nvar DESCRIPTORS;\nexport var parseDescriptors = function parseDescriptors(bytes) {\n bytes = toUint8(bytes);\n var results = [];\n var i = 0;\n\n while (bytes.length > i) {\n var tag = bytes[i];\n var size = 0;\n var headerSize = 0; // tag\n\n headerSize++;\n var byte = bytes[headerSize]; // first byte\n\n headerSize++;\n\n while (byte & 0x80) {\n size = (byte & 0x7F) << 7;\n byte = bytes[headerSize];\n headerSize++;\n }\n\n size += byte & 0x7F;\n\n for (var z = 0; z < DESCRIPTORS.length; z++) {\n var _DESCRIPTORS$z = DESCRIPTORS[z],\n id = _DESCRIPTORS$z.id,\n parser = _DESCRIPTORS$z.parser;\n\n if (tag === id) {\n results.push(parser(bytes.subarray(headerSize, headerSize + size)));\n break;\n }\n }\n\n i += size + headerSize;\n }\n\n return results;\n};\nDESCRIPTORS = [{\n id: 0x03,\n parser: function parser(bytes) {\n var desc = {\n tag: 0x03,\n id: bytes[0] << 8 | bytes[1],\n flags: bytes[2],\n size: 3,\n dependsOnEsId: 0,\n ocrEsId: 0,\n descriptors: [],\n url: ''\n }; // depends on es id\n\n if (desc.flags & 0x80) {\n desc.dependsOnEsId = bytes[desc.size] << 8 | bytes[desc.size + 1];\n desc.size += 2;\n } // url\n\n\n if (desc.flags & 0x40) {\n var len = bytes[desc.size];\n desc.url = bytesToString(bytes.subarray(desc.size + 1, desc.size + 1 + len));\n desc.size += len;\n } // ocr es id\n\n\n if (desc.flags & 0x20) {\n desc.ocrEsId = bytes[desc.size] << 8 | bytes[desc.size + 1];\n desc.size += 2;\n }\n\n desc.descriptors = parseDescriptors(bytes.subarray(desc.size)) || [];\n return desc;\n }\n}, {\n id: 0x04,\n parser: function parser(bytes) {\n // DecoderConfigDescriptor\n var desc = {\n tag: 0x04,\n oti: bytes[0],\n streamType: bytes[1],\n bufferSize: bytes[2] << 16 | bytes[3] << 8 | bytes[4],\n maxBitrate: bytes[5] << 24 | bytes[6] << 16 | bytes[7] << 8 | bytes[8],\n avgBitrate: bytes[9] << 24 | bytes[10] << 16 | bytes[11] << 8 | bytes[12],\n descriptors: parseDescriptors(bytes.subarray(13))\n };\n return desc;\n }\n}, {\n id: 0x05,\n parser: function parser(bytes) {\n // DecoderSpecificInfo\n return {\n tag: 0x05,\n bytes: bytes\n };\n }\n}, {\n id: 0x06,\n parser: function parser(bytes) {\n // SLConfigDescriptor\n return {\n tag: 0x06,\n bytes: bytes\n };\n }\n}];\n/**\n * find any number of boxes by name given a path to it in an iso bmff\n * such as mp4.\n *\n * @param {TypedArray} bytes\n * bytes for the iso bmff to search for boxes in\n *\n * @param {Uint8Array[]|string[]|string|Uint8Array} name\n * An array of paths or a single path representing the name\n * of boxes to search through in bytes. Paths may be\n * uint8 (character codes) or strings.\n *\n * @param {boolean} [complete=false]\n * Should we search only for complete boxes on the final path.\n * This is very useful when you do not want to get back partial boxes\n * in the case of streaming files.\n *\n * @return {Uint8Array[]}\n * An array of the end paths that we found.\n */\n\nexport var findBox = function findBox(bytes, paths, complete) {\n if (complete === void 0) {\n complete = false;\n }\n\n paths = normalizePaths(paths);\n bytes = toUint8(bytes);\n var results = [];\n\n if (!paths.length) {\n // short-circuit the search for empty paths\n return results;\n }\n\n var i = 0;\n\n while (i < bytes.length) {\n var size = (bytes[i] << 24 | bytes[i + 1] << 16 | bytes[i + 2] << 8 | bytes[i + 3]) >>> 0;\n var type = bytes.subarray(i + 4, i + 8); // invalid box format.\n\n if (size === 0) {\n break;\n }\n\n var end = i + size;\n\n if (end > bytes.length) {\n // this box is bigger than the number of bytes we have\n // and complete is set, we cannot find any more boxes.\n if (complete) {\n break;\n }\n\n end = bytes.length;\n }\n\n var data = bytes.subarray(i + 8, end);\n\n if (bytesMatch(type, paths[0])) {\n if (paths.length === 1) {\n // this is the end of the path and we've found the box we were\n // looking for\n results.push(data);\n } else {\n // recursively search for the next box along the path\n results.push.apply(results, findBox(data, paths.slice(1), complete));\n }\n }\n\n i = end;\n } // we've finished searching all of bytes\n\n\n return results;\n};\n/**\n * Search for a single matching box by name in an iso bmff format like\n * mp4. This function is useful for finding codec boxes which\n * can be placed arbitrarily in sample descriptions depending\n * on the version of the file or file type.\n *\n * @param {TypedArray} bytes\n * bytes for the iso bmff to search for boxes in\n *\n * @param {string|Uint8Array} name\n * The name of the box to find.\n *\n * @return {Uint8Array[]}\n * a subarray of bytes representing the name boxed we found.\n */\n\nexport var findNamedBox = function findNamedBox(bytes, name) {\n name = normalizePath(name);\n\n if (!name.length) {\n // short-circuit the search for empty paths\n return bytes.subarray(bytes.length);\n }\n\n var i = 0;\n\n while (i < bytes.length) {\n if (bytesMatch(bytes.subarray(i, i + name.length), name)) {\n var size = (bytes[i - 4] << 24 | bytes[i - 3] << 16 | bytes[i - 2] << 8 | bytes[i - 1]) >>> 0;\n var end = size > 1 ? i + size : bytes.byteLength;\n return bytes.subarray(i + 4, end);\n }\n\n i++;\n } // we've finished searching all of bytes\n\n\n return bytes.subarray(bytes.length);\n};\n\nvar parseSamples = function parseSamples(data, entrySize, parseEntry) {\n if (entrySize === void 0) {\n entrySize = 4;\n }\n\n if (parseEntry === void 0) {\n parseEntry = function parseEntry(d) {\n return bytesToNumber(d);\n };\n }\n\n var entries = [];\n\n if (!data || !data.length) {\n return entries;\n }\n\n var entryCount = bytesToNumber(data.subarray(4, 8));\n\n for (var i = 8; entryCount; i += entrySize, entryCount--) {\n entries.push(parseEntry(data.subarray(i, i + entrySize)));\n }\n\n return entries;\n};\n\nexport var buildFrameTable = function buildFrameTable(stbl, timescale) {\n var keySamples = parseSamples(findBox(stbl, ['stss'])[0]);\n var chunkOffsets = parseSamples(findBox(stbl, ['stco'])[0]);\n var timeToSamples = parseSamples(findBox(stbl, ['stts'])[0], 8, function (entry) {\n return {\n sampleCount: bytesToNumber(entry.subarray(0, 4)),\n sampleDelta: bytesToNumber(entry.subarray(4, 8))\n };\n });\n var samplesToChunks = parseSamples(findBox(stbl, ['stsc'])[0], 12, function (entry) {\n return {\n firstChunk: bytesToNumber(entry.subarray(0, 4)),\n samplesPerChunk: bytesToNumber(entry.subarray(4, 8)),\n sampleDescriptionIndex: bytesToNumber(entry.subarray(8, 12))\n };\n });\n var stsz = findBox(stbl, ['stsz'])[0]; // stsz starts with a 4 byte sampleSize which we don't need\n\n var sampleSizes = parseSamples(stsz && stsz.length && stsz.subarray(4) || null);\n var frames = [];\n\n for (var chunkIndex = 0; chunkIndex < chunkOffsets.length; chunkIndex++) {\n var samplesInChunk = void 0;\n\n for (var i = 0; i < samplesToChunks.length; i++) {\n var sampleToChunk = samplesToChunks[i];\n var isThisOne = chunkIndex + 1 >= sampleToChunk.firstChunk && (i + 1 >= samplesToChunks.length || chunkIndex + 1 < samplesToChunks[i + 1].firstChunk);\n\n if (isThisOne) {\n samplesInChunk = sampleToChunk.samplesPerChunk;\n break;\n }\n }\n\n var chunkOffset = chunkOffsets[chunkIndex];\n\n for (var _i = 0; _i < samplesInChunk; _i++) {\n var frameEnd = sampleSizes[frames.length]; // if we don't have key samples every frame is a keyframe\n\n var keyframe = !keySamples.length;\n\n if (keySamples.length && keySamples.indexOf(frames.length + 1) !== -1) {\n keyframe = true;\n }\n\n var frame = {\n keyframe: keyframe,\n start: chunkOffset,\n end: chunkOffset + frameEnd\n };\n\n for (var k = 0; k < timeToSamples.length; k++) {\n var _timeToSamples$k = timeToSamples[k],\n sampleCount = _timeToSamples$k.sampleCount,\n sampleDelta = _timeToSamples$k.sampleDelta;\n\n if (frames.length <= sampleCount) {\n // ms to ns\n var lastTimestamp = frames.length ? frames[frames.length - 1].timestamp : 0;\n frame.timestamp = lastTimestamp + sampleDelta / timescale * 1000;\n frame.duration = sampleDelta;\n break;\n }\n }\n\n frames.push(frame);\n chunkOffset += frameEnd;\n }\n }\n\n return frames;\n};\nexport var addSampleDescription = function addSampleDescription(track, bytes) {\n var codec = bytesToString(bytes.subarray(0, 4));\n\n if (track.type === 'video') {\n track.info = track.info || {};\n track.info.width = bytes[28] << 8 | bytes[29];\n track.info.height = bytes[30] << 8 | bytes[31];\n } else if (track.type === 'audio') {\n track.info = track.info || {};\n track.info.channels = bytes[20] << 8 | bytes[21];\n track.info.bitDepth = bytes[22] << 8 | bytes[23];\n track.info.sampleRate = bytes[28] << 8 | bytes[29];\n }\n\n if (codec === 'avc1') {\n var avcC = findNamedBox(bytes, 'avcC'); // AVCDecoderConfigurationRecord\n\n codec += \".\" + getAvcCodec(avcC);\n track.info.avcC = avcC; // TODO: do we need to parse all this?\n\n /* {\n configurationVersion: avcC[0],\n profile: avcC[1],\n profileCompatibility: avcC[2],\n level: avcC[3],\n lengthSizeMinusOne: avcC[4] & 0x3\n };\n let spsNalUnitCount = avcC[5] & 0x1F;\n const spsNalUnits = track.info.avc.spsNalUnits = [];\n // past spsNalUnitCount\n let offset = 6;\n while (spsNalUnitCount--) {\n const nalLen = avcC[offset] << 8 | avcC[offset + 1];\n spsNalUnits.push(avcC.subarray(offset + 2, offset + 2 + nalLen));\n offset += nalLen + 2;\n }\n let ppsNalUnitCount = avcC[offset];\n const ppsNalUnits = track.info.avc.ppsNalUnits = [];\n // past ppsNalUnitCount\n offset += 1;\n while (ppsNalUnitCount--) {\n const nalLen = avcC[offset] << 8 | avcC[offset + 1];\n ppsNalUnits.push(avcC.subarray(offset + 2, offset + 2 + nalLen));\n offset += nalLen + 2;\n }*/\n // HEVCDecoderConfigurationRecord\n } else if (codec === 'hvc1' || codec === 'hev1') {\n codec += \".\" + getHvcCodec(findNamedBox(bytes, 'hvcC'));\n } else if (codec === 'mp4a' || codec === 'mp4v') {\n var esds = findNamedBox(bytes, 'esds');\n var esDescriptor = parseDescriptors(esds.subarray(4))[0];\n var decoderConfig = esDescriptor && esDescriptor.descriptors.filter(function (_ref) {\n var tag = _ref.tag;\n return tag === 0x04;\n })[0];\n\n if (decoderConfig) {\n // most codecs do not have a further '.'\n // such as 0xa5 for ac-3 and 0xa6 for e-ac-3\n codec += '.' + toHexString(decoderConfig.oti);\n\n if (decoderConfig.oti === 0x40) {\n codec += '.' + (decoderConfig.descriptors[0].bytes[0] >> 3).toString();\n } else if (decoderConfig.oti === 0x20) {\n codec += '.' + decoderConfig.descriptors[0].bytes[4].toString();\n } else if (decoderConfig.oti === 0xdd) {\n codec = 'vorbis';\n }\n } else if (track.type === 'audio') {\n codec += '.40.2';\n } else {\n codec += '.20.9';\n }\n } else if (codec === 'av01') {\n // AV1DecoderConfigurationRecord\n codec += \".\" + getAv1Codec(findNamedBox(bytes, 'av1C'));\n } else if (codec === 'vp09') {\n // VPCodecConfigurationRecord\n var vpcC = findNamedBox(bytes, 'vpcC'); // https://www.webmproject.org/vp9/mp4/\n\n var profile = vpcC[0];\n var level = vpcC[1];\n var bitDepth = vpcC[2] >> 4;\n var chromaSubsampling = (vpcC[2] & 0x0F) >> 1;\n var videoFullRangeFlag = (vpcC[2] & 0x0F) >> 3;\n var colourPrimaries = vpcC[3];\n var transferCharacteristics = vpcC[4];\n var matrixCoefficients = vpcC[5];\n codec += \".\" + padStart(profile, 2, '0');\n codec += \".\" + padStart(level, 2, '0');\n codec += \".\" + padStart(bitDepth, 2, '0');\n codec += \".\" + padStart(chromaSubsampling, 2, '0');\n codec += \".\" + padStart(colourPrimaries, 2, '0');\n codec += \".\" + padStart(transferCharacteristics, 2, '0');\n codec += \".\" + padStart(matrixCoefficients, 2, '0');\n codec += \".\" + padStart(videoFullRangeFlag, 2, '0');\n } else if (codec === 'theo') {\n codec = 'theora';\n } else if (codec === 'spex') {\n codec = 'speex';\n } else if (codec === '.mp3') {\n codec = 'mp4a.40.34';\n } else if (codec === 'msVo') {\n codec = 'vorbis';\n } else if (codec === 'Opus') {\n codec = 'opus';\n var dOps = findNamedBox(bytes, 'dOps');\n track.info.opus = parseOpusHead(dOps); // TODO: should this go into the webm code??\n // Firefox requires a codecDelay for opus playback\n // see https://bugzilla.mozilla.org/show_bug.cgi?id=1276238\n\n track.info.codecDelay = 6500000;\n } else {\n codec = codec.toLowerCase();\n }\n /* eslint-enable */\n // flac, ac-3, ec-3, opus\n\n\n track.codec = codec;\n};\nexport var parseTracks = function parseTracks(bytes, frameTable) {\n if (frameTable === void 0) {\n frameTable = true;\n }\n\n bytes = toUint8(bytes);\n var traks = findBox(bytes, ['moov', 'trak'], true);\n var tracks = [];\n traks.forEach(function (trak) {\n var track = {\n bytes: trak\n };\n var mdia = findBox(trak, ['mdia'])[0];\n var hdlr = findBox(mdia, ['hdlr'])[0];\n var trakType = bytesToString(hdlr.subarray(8, 12));\n\n if (trakType === 'soun') {\n track.type = 'audio';\n } else if (trakType === 'vide') {\n track.type = 'video';\n } else {\n track.type = trakType;\n }\n\n var tkhd = findBox(trak, ['tkhd'])[0];\n\n if (tkhd) {\n var view = new DataView(tkhd.buffer, tkhd.byteOffset, tkhd.byteLength);\n var tkhdVersion = view.getUint8(0);\n track.number = tkhdVersion === 0 ? view.getUint32(12) : view.getUint32(20);\n }\n\n var mdhd = findBox(mdia, ['mdhd'])[0];\n\n if (mdhd) {\n // mdhd is a FullBox, meaning it will have its own version as the first byte\n var version = mdhd[0];\n var index = version === 0 ? 12 : 20;\n track.timescale = (mdhd[index] << 24 | mdhd[index + 1] << 16 | mdhd[index + 2] << 8 | mdhd[index + 3]) >>> 0;\n }\n\n var stbl = findBox(mdia, ['minf', 'stbl'])[0];\n var stsd = findBox(stbl, ['stsd'])[0];\n var descriptionCount = bytesToNumber(stsd.subarray(4, 8));\n var offset = 8; // add codec and codec info\n\n while (descriptionCount--) {\n var len = bytesToNumber(stsd.subarray(offset, offset + 4));\n var sampleDescriptor = stsd.subarray(offset + 4, offset + 4 + len);\n addSampleDescription(track, sampleDescriptor);\n offset += 4 + len;\n }\n\n if (frameTable) {\n track.frameTable = buildFrameTable(stbl, track.timescale);\n } // codec has no sub parameters\n\n\n tracks.push(track);\n });\n return tracks;\n};\nexport var parseMediaInfo = function parseMediaInfo(bytes) {\n var mvhd = findBox(bytes, ['moov', 'mvhd'], true)[0];\n\n if (!mvhd || !mvhd.length) {\n return;\n }\n\n var info = {}; // ms to ns\n // mvhd v1 has 8 byte duration and other fields too\n\n if (mvhd[0] === 1) {\n info.timestampScale = bytesToNumber(mvhd.subarray(20, 24));\n info.duration = bytesToNumber(mvhd.subarray(24, 32));\n } else {\n info.timestampScale = bytesToNumber(mvhd.subarray(12, 16));\n info.duration = bytesToNumber(mvhd.subarray(16, 20));\n }\n\n info.bytes = mvhd;\n return info;\n};","import { bytesMatch, toUint8 } from './byte-helpers.js';\nexport var NAL_TYPE_ONE = toUint8([0x00, 0x00, 0x00, 0x01]);\nexport var NAL_TYPE_TWO = toUint8([0x00, 0x00, 0x01]);\nexport var EMULATION_PREVENTION = toUint8([0x00, 0x00, 0x03]);\n/**\n * Expunge any \"Emulation Prevention\" bytes from a \"Raw Byte\n * Sequence Payload\"\n *\n * @param data {Uint8Array} the bytes of a RBSP from a NAL\n * unit\n * @return {Uint8Array} the RBSP without any Emulation\n * Prevention Bytes\n */\n\nexport var discardEmulationPreventionBytes = function discardEmulationPreventionBytes(bytes) {\n var positions = [];\n var i = 1; // Find all `Emulation Prevention Bytes`\n\n while (i < bytes.length - 2) {\n if (bytesMatch(bytes.subarray(i, i + 3), EMULATION_PREVENTION)) {\n positions.push(i + 2);\n i++;\n }\n\n i++;\n } // If no Emulation Prevention Bytes were found just return the original\n // array\n\n\n if (positions.length === 0) {\n return bytes;\n } // Create a new array to hold the NAL unit data\n\n\n var newLength = bytes.length - positions.length;\n var newData = new Uint8Array(newLength);\n var sourceIndex = 0;\n\n for (i = 0; i < newLength; sourceIndex++, i++) {\n if (sourceIndex === positions[0]) {\n // Skip this byte\n sourceIndex++; // Remove this position index\n\n positions.shift();\n }\n\n newData[i] = bytes[sourceIndex];\n }\n\n return newData;\n};\nexport var findNal = function findNal(bytes, dataType, types, nalLimit) {\n if (nalLimit === void 0) {\n nalLimit = Infinity;\n }\n\n bytes = toUint8(bytes);\n types = [].concat(types);\n var i = 0;\n var nalStart;\n var nalsFound = 0; // keep searching until:\n // we reach the end of bytes\n // we reach the maximum number of nals they want to seach\n // NOTE: that we disregard nalLimit when we have found the start\n // of the nal we want so that we can find the end of the nal we want.\n\n while (i < bytes.length && (nalsFound < nalLimit || nalStart)) {\n var nalOffset = void 0;\n\n if (bytesMatch(bytes.subarray(i), NAL_TYPE_ONE)) {\n nalOffset = 4;\n } else if (bytesMatch(bytes.subarray(i), NAL_TYPE_TWO)) {\n nalOffset = 3;\n } // we are unsynced,\n // find the next nal unit\n\n\n if (!nalOffset) {\n i++;\n continue;\n }\n\n nalsFound++;\n\n if (nalStart) {\n return discardEmulationPreventionBytes(bytes.subarray(nalStart, i));\n }\n\n var nalType = void 0;\n\n if (dataType === 'h264') {\n nalType = bytes[i + nalOffset] & 0x1f;\n } else if (dataType === 'h265') {\n nalType = bytes[i + nalOffset] >> 1 & 0x3f;\n }\n\n if (types.indexOf(nalType) !== -1) {\n nalStart = i + nalOffset;\n } // nal header is 1 length for h264, and 2 for h265\n\n\n i += nalOffset + (dataType === 'h264' ? 1 : 2);\n }\n\n return bytes.subarray(0, 0);\n};\nexport var findH264Nal = function findH264Nal(bytes, type, nalLimit) {\n return findNal(bytes, 'h264', type, nalLimit);\n};\nexport var findH265Nal = function findH265Nal(bytes, type, nalLimit) {\n return findNal(bytes, 'h265', type, nalLimit);\n};","export var OPUS_HEAD = new Uint8Array([// O, p, u, s\n0x4f, 0x70, 0x75, 0x73, // H, e, a, d\n0x48, 0x65, 0x61, 0x64]); // https://wiki.xiph.org/OggOpus\n// https://vfrmaniac.fushizen.eu/contents/opus_in_isobmff.html\n// https://opus-codec.org/docs/opusfile_api-0.7/structOpusHead.html\n\nexport var parseOpusHead = function parseOpusHead(bytes) {\n var view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);\n var version = view.getUint8(0); // version 0, from mp4, does not use littleEndian.\n\n var littleEndian = version !== 0;\n var config = {\n version: version,\n channels: view.getUint8(1),\n preSkip: view.getUint16(2, littleEndian),\n sampleRate: view.getUint32(4, littleEndian),\n outputGain: view.getUint16(8, littleEndian),\n channelMappingFamily: view.getUint8(10)\n };\n\n if (config.channelMappingFamily > 0 && bytes.length > 10) {\n config.streamCount = view.getUint8(11);\n config.twoChannelStreamCount = view.getUint8(12);\n config.channelMapping = [];\n\n for (var c = 0; c < config.channels; c++) {\n config.channelMapping.push(view.getUint8(13 + c));\n }\n }\n\n return config;\n};\nexport var setOpusHead = function setOpusHead(config) {\n var size = config.channelMappingFamily <= 0 ? 11 : 12 + config.channels;\n var view = new DataView(new ArrayBuffer(size));\n var littleEndian = config.version !== 0;\n view.setUint8(0, config.version);\n view.setUint8(1, config.channels);\n view.setUint16(2, config.preSkip, littleEndian);\n view.setUint32(4, config.sampleRate, littleEndian);\n view.setUint16(8, config.outputGain, littleEndian);\n view.setUint8(10, config.channelMappingFamily);\n\n if (config.channelMappingFamily > 0) {\n view.setUint8(11, config.streamCount);\n config.channelMapping.foreach(function (cm, i) {\n view.setUint8(12 + i, cm);\n });\n }\n\n return new Uint8Array(view.buffer);\n};","import URLToolkit from 'url-toolkit';\nimport window from 'global/window';\nvar DEFAULT_LOCATION = 'http://example.com';\n\nvar resolveUrl = function resolveUrl(baseUrl, relativeUrl) {\n // return early if we don't need to resolve\n if (/^[a-z]+:/i.test(relativeUrl)) {\n return relativeUrl;\n } // if baseUrl is a data URI, ignore it and resolve everything relative to window.location\n\n\n if (/^data:/.test(baseUrl)) {\n baseUrl = window.location && window.location.href || '';\n } // IE11 supports URL but not the URL constructor\n // feature detect the behavior we want\n\n\n var nativeURL = typeof window.URL === 'function';\n var protocolLess = /^\\/\\//.test(baseUrl); // remove location if window.location isn't available (i.e. we're in node)\n // and if baseUrl isn't an absolute url\n\n var removeLocation = !window.location && !/\\/\\//i.test(baseUrl); // if the base URL is relative then combine with the current location\n\n if (nativeURL) {\n baseUrl = new window.URL(baseUrl, window.location || DEFAULT_LOCATION);\n } else if (!/\\/\\//i.test(baseUrl)) {\n baseUrl = URLToolkit.buildAbsoluteURL(window.location && window.location.href || '', baseUrl);\n }\n\n if (nativeURL) {\n var newUrl = new URL(relativeUrl, baseUrl); // if we're a protocol-less url, remove the protocol\n // and if we're location-less, remove the location\n // otherwise, return the url unmodified\n\n if (removeLocation) {\n return newUrl.href.slice(DEFAULT_LOCATION.length);\n } else if (protocolLess) {\n return newUrl.href.slice(newUrl.protocol.length);\n }\n\n return newUrl.href;\n }\n\n return URLToolkit.buildAbsoluteURL(baseUrl, relativeUrl);\n};\n\nexport default resolveUrl;","/**\n * Copyright 2013 vtt.js Contributors\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n// Default exports for Node. Export the extended versions of VTTCue and\n// VTTRegion in Node since we likely want the capability to convert back and\n// forth between JSON. If we don't then it's not that big of a deal since we're\n// off browser.\n\nvar window = require('global/window');\n\nvar vttjs = module.exports = {\n WebVTT: require(\"./vtt.js\"),\n VTTCue: require(\"./vttcue.js\"),\n VTTRegion: require(\"./vttregion.js\")\n};\n\nwindow.vttjs = vttjs;\nwindow.WebVTT = vttjs.WebVTT;\n\nvar cueShim = vttjs.VTTCue;\nvar regionShim = vttjs.VTTRegion;\nvar nativeVTTCue = window.VTTCue;\nvar nativeVTTRegion = window.VTTRegion;\n\nvttjs.shim = function() {\n window.VTTCue = cueShim;\n window.VTTRegion = regionShim;\n};\n\nvttjs.restore = function() {\n window.VTTCue = nativeVTTCue;\n window.VTTRegion = nativeVTTRegion;\n};\n\nif (!window.VTTCue) {\n vttjs.shim();\n}\n","/**\n * Copyright 2013 vtt.js Contributors\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */\n/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */\nvar document = require('global/document');\n\nvar _objCreate = Object.create || (function() {\n function F() {}\n return function(o) {\n if (arguments.length !== 1) {\n throw new Error('Object.create shim only accepts one parameter.');\n }\n F.prototype = o;\n return new F();\n };\n})();\n\n// Creates a new ParserError object from an errorData object. The errorData\n// object should have default code and message properties. The default message\n// property can be overriden by passing in a message parameter.\n// See ParsingError.Errors below for acceptable errors.\nfunction ParsingError(errorData, message) {\n this.name = \"ParsingError\";\n this.code = errorData.code;\n this.message = message || errorData.message;\n}\nParsingError.prototype = _objCreate(Error.prototype);\nParsingError.prototype.constructor = ParsingError;\n\n// ParsingError metadata for acceptable ParsingErrors.\nParsingError.Errors = {\n BadSignature: {\n code: 0,\n message: \"Malformed WebVTT signature.\"\n },\n BadTimeStamp: {\n code: 1,\n message: \"Malformed time stamp.\"\n }\n};\n\n// Try to parse input as a time stamp.\nfunction parseTimeStamp(input) {\n\n function computeSeconds(h, m, s, f) {\n return (h | 0) * 3600 + (m | 0) * 60 + (s | 0) + (f | 0) / 1000;\n }\n\n var m = input.match(/^(\\d+):(\\d{1,2})(:\\d{1,2})?\\.(\\d{3})/);\n if (!m) {\n return null;\n }\n\n if (m[3]) {\n // Timestamp takes the form of [hours]:[minutes]:[seconds].[milliseconds]\n return computeSeconds(m[1], m[2], m[3].replace(\":\", \"\"), m[4]);\n } else if (m[1] > 59) {\n // Timestamp takes the form of [hours]:[minutes].[milliseconds]\n // First position is hours as it's over 59.\n return computeSeconds(m[1], m[2], 0, m[4]);\n } else {\n // Timestamp takes the form of [minutes]:[seconds].[milliseconds]\n return computeSeconds(0, m[1], m[2], m[4]);\n }\n}\n\n// A settings object holds key/value pairs and will ignore anything but the first\n// assignment to a specific key.\nfunction Settings() {\n this.values = _objCreate(null);\n}\n\nSettings.prototype = {\n // Only accept the first assignment to any key.\n set: function(k, v) {\n if (!this.get(k) && v !== \"\") {\n this.values[k] = v;\n }\n },\n // Return the value for a key, or a default value.\n // If 'defaultKey' is passed then 'dflt' is assumed to be an object with\n // a number of possible default values as properties where 'defaultKey' is\n // the key of the property that will be chosen; otherwise it's assumed to be\n // a single value.\n get: function(k, dflt, defaultKey) {\n if (defaultKey) {\n return this.has(k) ? this.values[k] : dflt[defaultKey];\n }\n return this.has(k) ? this.values[k] : dflt;\n },\n // Check whether we have a value for a key.\n has: function(k) {\n return k in this.values;\n },\n // Accept a setting if its one of the given alternatives.\n alt: function(k, v, a) {\n for (var n = 0; n < a.length; ++n) {\n if (v === a[n]) {\n this.set(k, v);\n break;\n }\n }\n },\n // Accept a setting if its a valid (signed) integer.\n integer: function(k, v) {\n if (/^-?\\d+$/.test(v)) { // integer\n this.set(k, parseInt(v, 10));\n }\n },\n // Accept a setting if its a valid percentage.\n percent: function(k, v) {\n var m;\n if ((m = v.match(/^([\\d]{1,3})(\\.[\\d]*)?%$/))) {\n v = parseFloat(v);\n if (v >= 0 && v <= 100) {\n this.set(k, v);\n return true;\n }\n }\n return false;\n }\n};\n\n// Helper function to parse input into groups separated by 'groupDelim', and\n// interprete each group as a key/value pair separated by 'keyValueDelim'.\nfunction parseOptions(input, callback, keyValueDelim, groupDelim) {\n var groups = groupDelim ? input.split(groupDelim) : [input];\n for (var i in groups) {\n if (typeof groups[i] !== \"string\") {\n continue;\n }\n var kv = groups[i].split(keyValueDelim);\n if (kv.length !== 2) {\n continue;\n }\n var k = kv[0].trim();\n var v = kv[1].trim();\n callback(k, v);\n }\n}\n\nfunction parseCue(input, cue, regionList) {\n // Remember the original input if we need to throw an error.\n var oInput = input;\n // 4.1 WebVTT timestamp\n function consumeTimeStamp() {\n var ts = parseTimeStamp(input);\n if (ts === null) {\n throw new ParsingError(ParsingError.Errors.BadTimeStamp,\n \"Malformed timestamp: \" + oInput);\n }\n // Remove time stamp from input.\n input = input.replace(/^[^\\sa-zA-Z-]+/, \"\");\n return ts;\n }\n\n // 4.4.2 WebVTT cue settings\n function consumeCueSettings(input, cue) {\n var settings = new Settings();\n\n parseOptions(input, function (k, v) {\n switch (k) {\n case \"region\":\n // Find the last region we parsed with the same region id.\n for (var i = regionList.length - 1; i >= 0; i--) {\n if (regionList[i].id === v) {\n settings.set(k, regionList[i].region);\n break;\n }\n }\n break;\n case \"vertical\":\n settings.alt(k, v, [\"rl\", \"lr\"]);\n break;\n case \"line\":\n var vals = v.split(\",\"),\n vals0 = vals[0];\n settings.integer(k, vals0);\n settings.percent(k, vals0) ? settings.set(\"snapToLines\", false) : null;\n settings.alt(k, vals0, [\"auto\"]);\n if (vals.length === 2) {\n settings.alt(\"lineAlign\", vals[1], [\"start\", \"center\", \"end\"]);\n }\n break;\n case \"position\":\n vals = v.split(\",\");\n settings.percent(k, vals[0]);\n if (vals.length === 2) {\n settings.alt(\"positionAlign\", vals[1], [\"start\", \"center\", \"end\"]);\n }\n break;\n case \"size\":\n settings.percent(k, v);\n break;\n case \"align\":\n settings.alt(k, v, [\"start\", \"center\", \"end\", \"left\", \"right\"]);\n break;\n }\n }, /:/, /\\s/);\n\n // Apply default values for any missing fields.\n cue.region = settings.get(\"region\", null);\n cue.vertical = settings.get(\"vertical\", \"\");\n try {\n cue.line = settings.get(\"line\", \"auto\");\n } catch (e) {}\n cue.lineAlign = settings.get(\"lineAlign\", \"start\");\n cue.snapToLines = settings.get(\"snapToLines\", true);\n cue.size = settings.get(\"size\", 100);\n // Safari still uses the old middle value and won't accept center\n try {\n cue.align = settings.get(\"align\", \"center\");\n } catch (e) {\n cue.align = settings.get(\"align\", \"middle\");\n }\n try {\n cue.position = settings.get(\"position\", \"auto\");\n } catch (e) {\n cue.position = settings.get(\"position\", {\n start: 0,\n left: 0,\n center: 50,\n middle: 50,\n end: 100,\n right: 100\n }, cue.align);\n }\n\n\n cue.positionAlign = settings.get(\"positionAlign\", {\n start: \"start\",\n left: \"start\",\n center: \"center\",\n middle: \"center\",\n end: \"end\",\n right: \"end\"\n }, cue.align);\n }\n\n function skipWhitespace() {\n input = input.replace(/^\\s+/, \"\");\n }\n\n // 4.1 WebVTT cue timings.\n skipWhitespace();\n cue.startTime = consumeTimeStamp(); // (1) collect cue start time\n skipWhitespace();\n if (input.substr(0, 3) !== \"-->\") { // (3) next characters must match \"-->\"\n throw new ParsingError(ParsingError.Errors.BadTimeStamp,\n \"Malformed time stamp (time stamps must be separated by '-->'): \" +\n oInput);\n }\n input = input.substr(3);\n skipWhitespace();\n cue.endTime = consumeTimeStamp(); // (5) collect cue end time\n\n // 4.1 WebVTT cue settings list.\n skipWhitespace();\n consumeCueSettings(input, cue);\n}\n\n// When evaluating this file as part of a Webpack bundle for server\n// side rendering, `document` is an empty object.\nvar TEXTAREA_ELEMENT = document.createElement && document.createElement(\"textarea\");\n\nvar TAG_NAME = {\n c: \"span\",\n i: \"i\",\n b: \"b\",\n u: \"u\",\n ruby: \"ruby\",\n rt: \"rt\",\n v: \"span\",\n lang: \"span\"\n};\n\n// 5.1 default text color\n// 5.2 default text background color is equivalent to text color with bg_ prefix\nvar DEFAULT_COLOR_CLASS = {\n white: 'rgba(255,255,255,1)',\n lime: 'rgba(0,255,0,1)',\n cyan: 'rgba(0,255,255,1)',\n red: 'rgba(255,0,0,1)',\n yellow: 'rgba(255,255,0,1)',\n magenta: 'rgba(255,0,255,1)',\n blue: 'rgba(0,0,255,1)',\n black: 'rgba(0,0,0,1)'\n};\n\nvar TAG_ANNOTATION = {\n v: \"title\",\n lang: \"lang\"\n};\n\nvar NEEDS_PARENT = {\n rt: \"ruby\"\n};\n\n// Parse content into a document fragment.\nfunction parseContent(window, input) {\n function nextToken() {\n // Check for end-of-string.\n if (!input) {\n return null;\n }\n\n // Consume 'n' characters from the input.\n function consume(result) {\n input = input.substr(result.length);\n return result;\n }\n\n var m = input.match(/^([^<]*)(<[^>]*>?)?/);\n // If there is some text before the next tag, return it, otherwise return\n // the tag.\n return consume(m[1] ? m[1] : m[2]);\n }\n\n function unescape(s) {\n TEXTAREA_ELEMENT.innerHTML = s;\n s = TEXTAREA_ELEMENT.textContent;\n TEXTAREA_ELEMENT.textContent = \"\";\n return s;\n }\n\n function shouldAdd(current, element) {\n return !NEEDS_PARENT[element.localName] ||\n NEEDS_PARENT[element.localName] === current.localName;\n }\n\n // Create an element for this tag.\n function createElement(type, annotation) {\n var tagName = TAG_NAME[type];\n if (!tagName) {\n return null;\n }\n var element = window.document.createElement(tagName);\n var name = TAG_ANNOTATION[type];\n if (name && annotation) {\n element[name] = annotation.trim();\n }\n return element;\n }\n\n var rootDiv = window.document.createElement(\"div\"),\n current = rootDiv,\n t,\n tagStack = [];\n\n while ((t = nextToken()) !== null) {\n if (t[0] === '<') {\n if (t[1] === \"/\") {\n // If the closing tag matches, move back up to the parent node.\n if (tagStack.length &&\n tagStack[tagStack.length - 1] === t.substr(2).replace(\">\", \"\")) {\n tagStack.pop();\n current = current.parentNode;\n }\n // Otherwise just ignore the end tag.\n continue;\n }\n var ts = parseTimeStamp(t.substr(1, t.length - 2));\n var node;\n if (ts) {\n // Timestamps are lead nodes as well.\n node = window.document.createProcessingInstruction(\"timestamp\", ts);\n current.appendChild(node);\n continue;\n }\n var m = t.match(/^<([^.\\s/0-9>]+)(\\.[^\\s\\\\>]+)?([^>\\\\]+)?(\\\\?)>?$/);\n // If we can't parse the tag, skip to the next tag.\n if (!m) {\n continue;\n }\n // Try to construct an element, and ignore the tag if we couldn't.\n node = createElement(m[1], m[3]);\n if (!node) {\n continue;\n }\n // Determine if the tag should be added based on the context of where it\n // is placed in the cuetext.\n if (!shouldAdd(current, node)) {\n continue;\n }\n // Set the class list (as a list of classes, separated by space).\n if (m[2]) {\n var classes = m[2].split('.');\n\n classes.forEach(function(cl) {\n var bgColor = /^bg_/.test(cl);\n // slice out `bg_` if it's a background color\n var colorName = bgColor ? cl.slice(3) : cl;\n\n if (DEFAULT_COLOR_CLASS.hasOwnProperty(colorName)) {\n var propName = bgColor ? 'background-color' : 'color';\n var propValue = DEFAULT_COLOR_CLASS[colorName];\n\n node.style[propName] = propValue;\n }\n });\n\n node.className = classes.join(' ');\n }\n // Append the node to the current node, and enter the scope of the new\n // node.\n tagStack.push(m[1]);\n current.appendChild(node);\n current = node;\n continue;\n }\n\n // Text nodes are leaf nodes.\n current.appendChild(window.document.createTextNode(unescape(t)));\n }\n\n return rootDiv;\n}\n\n// This is a list of all the Unicode characters that have a strong\n// right-to-left category. What this means is that these characters are\n// written right-to-left for sure. It was generated by pulling all the strong\n// right-to-left characters out of the Unicode data table. That table can\n// found at: http://www.unicode.org/Public/UNIDATA/UnicodeData.txt\nvar strongRTLRanges = [[0x5be, 0x5be], [0x5c0, 0x5c0], [0x5c3, 0x5c3], [0x5c6, 0x5c6],\n [0x5d0, 0x5ea], [0x5f0, 0x5f4], [0x608, 0x608], [0x60b, 0x60b], [0x60d, 0x60d],\n [0x61b, 0x61b], [0x61e, 0x64a], [0x66d, 0x66f], [0x671, 0x6d5], [0x6e5, 0x6e6],\n [0x6ee, 0x6ef], [0x6fa, 0x70d], [0x70f, 0x710], [0x712, 0x72f], [0x74d, 0x7a5],\n [0x7b1, 0x7b1], [0x7c0, 0x7ea], [0x7f4, 0x7f5], [0x7fa, 0x7fa], [0x800, 0x815],\n [0x81a, 0x81a], [0x824, 0x824], [0x828, 0x828], [0x830, 0x83e], [0x840, 0x858],\n [0x85e, 0x85e], [0x8a0, 0x8a0], [0x8a2, 0x8ac], [0x200f, 0x200f],\n [0xfb1d, 0xfb1d], [0xfb1f, 0xfb28], [0xfb2a, 0xfb36], [0xfb38, 0xfb3c],\n [0xfb3e, 0xfb3e], [0xfb40, 0xfb41], [0xfb43, 0xfb44], [0xfb46, 0xfbc1],\n [0xfbd3, 0xfd3d], [0xfd50, 0xfd8f], [0xfd92, 0xfdc7], [0xfdf0, 0xfdfc],\n [0xfe70, 0xfe74], [0xfe76, 0xfefc], [0x10800, 0x10805], [0x10808, 0x10808],\n [0x1080a, 0x10835], [0x10837, 0x10838], [0x1083c, 0x1083c], [0x1083f, 0x10855],\n [0x10857, 0x1085f], [0x10900, 0x1091b], [0x10920, 0x10939], [0x1093f, 0x1093f],\n [0x10980, 0x109b7], [0x109be, 0x109bf], [0x10a00, 0x10a00], [0x10a10, 0x10a13],\n [0x10a15, 0x10a17], [0x10a19, 0x10a33], [0x10a40, 0x10a47], [0x10a50, 0x10a58],\n [0x10a60, 0x10a7f], [0x10b00, 0x10b35], [0x10b40, 0x10b55], [0x10b58, 0x10b72],\n [0x10b78, 0x10b7f], [0x10c00, 0x10c48], [0x1ee00, 0x1ee03], [0x1ee05, 0x1ee1f],\n [0x1ee21, 0x1ee22], [0x1ee24, 0x1ee24], [0x1ee27, 0x1ee27], [0x1ee29, 0x1ee32],\n [0x1ee34, 0x1ee37], [0x1ee39, 0x1ee39], [0x1ee3b, 0x1ee3b], [0x1ee42, 0x1ee42],\n [0x1ee47, 0x1ee47], [0x1ee49, 0x1ee49], [0x1ee4b, 0x1ee4b], [0x1ee4d, 0x1ee4f],\n [0x1ee51, 0x1ee52], [0x1ee54, 0x1ee54], [0x1ee57, 0x1ee57], [0x1ee59, 0x1ee59],\n [0x1ee5b, 0x1ee5b], [0x1ee5d, 0x1ee5d], [0x1ee5f, 0x1ee5f], [0x1ee61, 0x1ee62],\n [0x1ee64, 0x1ee64], [0x1ee67, 0x1ee6a], [0x1ee6c, 0x1ee72], [0x1ee74, 0x1ee77],\n [0x1ee79, 0x1ee7c], [0x1ee7e, 0x1ee7e], [0x1ee80, 0x1ee89], [0x1ee8b, 0x1ee9b],\n [0x1eea1, 0x1eea3], [0x1eea5, 0x1eea9], [0x1eeab, 0x1eebb], [0x10fffd, 0x10fffd]];\n\nfunction isStrongRTLChar(charCode) {\n for (var i = 0; i < strongRTLRanges.length; i++) {\n var currentRange = strongRTLRanges[i];\n if (charCode >= currentRange[0] && charCode <= currentRange[1]) {\n return true;\n }\n }\n\n return false;\n}\n\nfunction determineBidi(cueDiv) {\n var nodeStack = [],\n text = \"\",\n charCode;\n\n if (!cueDiv || !cueDiv.childNodes) {\n return \"ltr\";\n }\n\n function pushNodes(nodeStack, node) {\n for (var i = node.childNodes.length - 1; i >= 0; i--) {\n nodeStack.push(node.childNodes[i]);\n }\n }\n\n function nextTextNode(nodeStack) {\n if (!nodeStack || !nodeStack.length) {\n return null;\n }\n\n var node = nodeStack.pop(),\n text = node.textContent || node.innerText;\n if (text) {\n // TODO: This should match all unicode type B characters (paragraph\n // separator characters). See issue #115.\n var m = text.match(/^.*(\\n|\\r)/);\n if (m) {\n nodeStack.length = 0;\n return m[0];\n }\n return text;\n }\n if (node.tagName === \"ruby\") {\n return nextTextNode(nodeStack);\n }\n if (node.childNodes) {\n pushNodes(nodeStack, node);\n return nextTextNode(nodeStack);\n }\n }\n\n pushNodes(nodeStack, cueDiv);\n while ((text = nextTextNode(nodeStack))) {\n for (var i = 0; i < text.length; i++) {\n charCode = text.charCodeAt(i);\n if (isStrongRTLChar(charCode)) {\n return \"rtl\";\n }\n }\n }\n return \"ltr\";\n}\n\nfunction computeLinePos(cue) {\n if (typeof cue.line === \"number\" &&\n (cue.snapToLines || (cue.line >= 0 && cue.line <= 100))) {\n return cue.line;\n }\n if (!cue.track || !cue.track.textTrackList ||\n !cue.track.textTrackList.mediaElement) {\n return -1;\n }\n var track = cue.track,\n trackList = track.textTrackList,\n count = 0;\n for (var i = 0; i < trackList.length && trackList[i] !== track; i++) {\n if (trackList[i].mode === \"showing\") {\n count++;\n }\n }\n return ++count * -1;\n}\n\nfunction StyleBox() {\n}\n\n// Apply styles to a div. If there is no div passed then it defaults to the\n// div on 'this'.\nStyleBox.prototype.applyStyles = function(styles, div) {\n div = div || this.div;\n for (var prop in styles) {\n if (styles.hasOwnProperty(prop)) {\n div.style[prop] = styles[prop];\n }\n }\n};\n\nStyleBox.prototype.formatStyle = function(val, unit) {\n return val === 0 ? 0 : val + unit;\n};\n\n// Constructs the computed display state of the cue (a div). Places the div\n// into the overlay which should be a block level element (usually a div).\nfunction CueStyleBox(window, cue, styleOptions) {\n StyleBox.call(this);\n this.cue = cue;\n\n // Parse our cue's text into a DOM tree rooted at 'cueDiv'. This div will\n // have inline positioning and will function as the cue background box.\n this.cueDiv = parseContent(window, cue.text);\n var styles = {\n color: \"rgba(255, 255, 255, 1)\",\n backgroundColor: \"rgba(0, 0, 0, 0.8)\",\n position: \"relative\",\n left: 0,\n right: 0,\n top: 0,\n bottom: 0,\n display: \"inline\",\n writingMode: cue.vertical === \"\" ? \"horizontal-tb\"\n : cue.vertical === \"lr\" ? \"vertical-lr\"\n : \"vertical-rl\",\n unicodeBidi: \"plaintext\"\n };\n\n this.applyStyles(styles, this.cueDiv);\n\n // Create an absolutely positioned div that will be used to position the cue\n // div. Note, all WebVTT cue-setting alignments are equivalent to the CSS\n // mirrors of them except middle instead of center on Safari.\n this.div = window.document.createElement(\"div\");\n styles = {\n direction: determineBidi(this.cueDiv),\n writingMode: cue.vertical === \"\" ? \"horizontal-tb\"\n : cue.vertical === \"lr\" ? \"vertical-lr\"\n : \"vertical-rl\",\n unicodeBidi: \"plaintext\",\n textAlign: cue.align === \"middle\" ? \"center\" : cue.align,\n font: styleOptions.font,\n whiteSpace: \"pre-line\",\n position: \"absolute\"\n };\n\n this.applyStyles(styles);\n this.div.appendChild(this.cueDiv);\n\n // Calculate the distance from the reference edge of the viewport to the text\n // position of the cue box. The reference edge will be resolved later when\n // the box orientation styles are applied.\n var textPos = 0;\n switch (cue.positionAlign) {\n case \"start\":\n case \"line-left\":\n textPos = cue.position;\n break;\n case \"center\":\n textPos = cue.position - (cue.size / 2);\n break;\n case \"end\":\n case \"line-right\":\n textPos = cue.position - cue.size;\n break;\n }\n\n // Horizontal box orientation; textPos is the distance from the left edge of the\n // area to the left edge of the box and cue.size is the distance extending to\n // the right from there.\n if (cue.vertical === \"\") {\n this.applyStyles({\n left: this.formatStyle(textPos, \"%\"),\n width: this.formatStyle(cue.size, \"%\")\n });\n // Vertical box orientation; textPos is the distance from the top edge of the\n // area to the top edge of the box and cue.size is the height extending\n // downwards from there.\n } else {\n this.applyStyles({\n top: this.formatStyle(textPos, \"%\"),\n height: this.formatStyle(cue.size, \"%\")\n });\n }\n\n this.move = function(box) {\n this.applyStyles({\n top: this.formatStyle(box.top, \"px\"),\n bottom: this.formatStyle(box.bottom, \"px\"),\n left: this.formatStyle(box.left, \"px\"),\n right: this.formatStyle(box.right, \"px\"),\n height: this.formatStyle(box.height, \"px\"),\n width: this.formatStyle(box.width, \"px\")\n });\n };\n}\nCueStyleBox.prototype = _objCreate(StyleBox.prototype);\nCueStyleBox.prototype.constructor = CueStyleBox;\n\n// Represents the co-ordinates of an Element in a way that we can easily\n// compute things with such as if it overlaps or intersects with another Element.\n// Can initialize it with either a StyleBox or another BoxPosition.\nfunction BoxPosition(obj) {\n // Either a BoxPosition was passed in and we need to copy it, or a StyleBox\n // was passed in and we need to copy the results of 'getBoundingClientRect'\n // as the object returned is readonly. All co-ordinate values are in reference\n // to the viewport origin (top left).\n var lh, height, width, top;\n if (obj.div) {\n height = obj.div.offsetHeight;\n width = obj.div.offsetWidth;\n top = obj.div.offsetTop;\n\n var rects = (rects = obj.div.childNodes) && (rects = rects[0]) &&\n rects.getClientRects && rects.getClientRects();\n obj = obj.div.getBoundingClientRect();\n // In certain cases the outter div will be slightly larger then the sum of\n // the inner div's lines. This could be due to bold text, etc, on some platforms.\n // In this case we should get the average line height and use that. This will\n // result in the desired behaviour.\n lh = rects ? Math.max((rects[0] && rects[0].height) || 0, obj.height / rects.length)\n : 0;\n\n }\n this.left = obj.left;\n this.right = obj.right;\n this.top = obj.top || top;\n this.height = obj.height || height;\n this.bottom = obj.bottom || (top + (obj.height || height));\n this.width = obj.width || width;\n this.lineHeight = lh !== undefined ? lh : obj.lineHeight;\n}\n\n// Move the box along a particular axis. Optionally pass in an amount to move\n// the box. If no amount is passed then the default is the line height of the\n// box.\nBoxPosition.prototype.move = function(axis, toMove) {\n toMove = toMove !== undefined ? toMove : this.lineHeight;\n switch (axis) {\n case \"+x\":\n this.left += toMove;\n this.right += toMove;\n break;\n case \"-x\":\n this.left -= toMove;\n this.right -= toMove;\n break;\n case \"+y\":\n this.top += toMove;\n this.bottom += toMove;\n break;\n case \"-y\":\n this.top -= toMove;\n this.bottom -= toMove;\n break;\n }\n};\n\n// Check if this box overlaps another box, b2.\nBoxPosition.prototype.overlaps = function(b2) {\n return this.left < b2.right &&\n this.right > b2.left &&\n this.top < b2.bottom &&\n this.bottom > b2.top;\n};\n\n// Check if this box overlaps any other boxes in boxes.\nBoxPosition.prototype.overlapsAny = function(boxes) {\n for (var i = 0; i < boxes.length; i++) {\n if (this.overlaps(boxes[i])) {\n return true;\n }\n }\n return false;\n};\n\n// Check if this box is within another box.\nBoxPosition.prototype.within = function(container) {\n return this.top >= container.top &&\n this.bottom <= container.bottom &&\n this.left >= container.left &&\n this.right <= container.right;\n};\n\n// Check if this box is entirely within the container or it is overlapping\n// on the edge opposite of the axis direction passed. For example, if \"+x\" is\n// passed and the box is overlapping on the left edge of the container, then\n// return true.\nBoxPosition.prototype.overlapsOppositeAxis = function(container, axis) {\n switch (axis) {\n case \"+x\":\n return this.left < container.left;\n case \"-x\":\n return this.right > container.right;\n case \"+y\":\n return this.top < container.top;\n case \"-y\":\n return this.bottom > container.bottom;\n }\n};\n\n// Find the percentage of the area that this box is overlapping with another\n// box.\nBoxPosition.prototype.intersectPercentage = function(b2) {\n var x = Math.max(0, Math.min(this.right, b2.right) - Math.max(this.left, b2.left)),\n y = Math.max(0, Math.min(this.bottom, b2.bottom) - Math.max(this.top, b2.top)),\n intersectArea = x * y;\n return intersectArea / (this.height * this.width);\n};\n\n// Convert the positions from this box to CSS compatible positions using\n// the reference container's positions. This has to be done because this\n// box's positions are in reference to the viewport origin, whereas, CSS\n// values are in referecne to their respective edges.\nBoxPosition.prototype.toCSSCompatValues = function(reference) {\n return {\n top: this.top - reference.top,\n bottom: reference.bottom - this.bottom,\n left: this.left - reference.left,\n right: reference.right - this.right,\n height: this.height,\n width: this.width\n };\n};\n\n// Get an object that represents the box's position without anything extra.\n// Can pass a StyleBox, HTMLElement, or another BoxPositon.\nBoxPosition.getSimpleBoxPosition = function(obj) {\n var height = obj.div ? obj.div.offsetHeight : obj.tagName ? obj.offsetHeight : 0;\n var width = obj.div ? obj.div.offsetWidth : obj.tagName ? obj.offsetWidth : 0;\n var top = obj.div ? obj.div.offsetTop : obj.tagName ? obj.offsetTop : 0;\n\n obj = obj.div ? obj.div.getBoundingClientRect() :\n obj.tagName ? obj.getBoundingClientRect() : obj;\n var ret = {\n left: obj.left,\n right: obj.right,\n top: obj.top || top,\n height: obj.height || height,\n bottom: obj.bottom || (top + (obj.height || height)),\n width: obj.width || width\n };\n return ret;\n};\n\n// Move a StyleBox to its specified, or next best, position. The containerBox\n// is the box that contains the StyleBox, such as a div. boxPositions are\n// a list of other boxes that the styleBox can't overlap with.\nfunction moveBoxToLinePosition(window, styleBox, containerBox, boxPositions) {\n\n // Find the best position for a cue box, b, on the video. The axis parameter\n // is a list of axis, the order of which, it will move the box along. For example:\n // Passing [\"+x\", \"-x\"] will move the box first along the x axis in the positive\n // direction. If it doesn't find a good position for it there it will then move\n // it along the x axis in the negative direction.\n function findBestPosition(b, axis) {\n var bestPosition,\n specifiedPosition = new BoxPosition(b),\n percentage = 1; // Highest possible so the first thing we get is better.\n\n for (var i = 0; i < axis.length; i++) {\n while (b.overlapsOppositeAxis(containerBox, axis[i]) ||\n (b.within(containerBox) && b.overlapsAny(boxPositions))) {\n b.move(axis[i]);\n }\n // We found a spot where we aren't overlapping anything. This is our\n // best position.\n if (b.within(containerBox)) {\n return b;\n }\n var p = b.intersectPercentage(containerBox);\n // If we're outside the container box less then we were on our last try\n // then remember this position as the best position.\n if (percentage > p) {\n bestPosition = new BoxPosition(b);\n percentage = p;\n }\n // Reset the box position to the specified position.\n b = new BoxPosition(specifiedPosition);\n }\n return bestPosition || specifiedPosition;\n }\n\n var boxPosition = new BoxPosition(styleBox),\n cue = styleBox.cue,\n linePos = computeLinePos(cue),\n axis = [];\n\n // If we have a line number to align the cue to.\n if (cue.snapToLines) {\n var size;\n switch (cue.vertical) {\n case \"\":\n axis = [ \"+y\", \"-y\" ];\n size = \"height\";\n break;\n case \"rl\":\n axis = [ \"+x\", \"-x\" ];\n size = \"width\";\n break;\n case \"lr\":\n axis = [ \"-x\", \"+x\" ];\n size = \"width\";\n break;\n }\n\n var step = boxPosition.lineHeight,\n position = step * Math.round(linePos),\n maxPosition = containerBox[size] + step,\n initialAxis = axis[0];\n\n // If the specified intial position is greater then the max position then\n // clamp the box to the amount of steps it would take for the box to\n // reach the max position.\n if (Math.abs(position) > maxPosition) {\n position = position < 0 ? -1 : 1;\n position *= Math.ceil(maxPosition / step) * step;\n }\n\n // If computed line position returns negative then line numbers are\n // relative to the bottom of the video instead of the top. Therefore, we\n // need to increase our initial position by the length or width of the\n // video, depending on the writing direction, and reverse our axis directions.\n if (linePos < 0) {\n position += cue.vertical === \"\" ? containerBox.height : containerBox.width;\n axis = axis.reverse();\n }\n\n // Move the box to the specified position. This may not be its best\n // position.\n boxPosition.move(initialAxis, position);\n\n } else {\n // If we have a percentage line value for the cue.\n var calculatedPercentage = (boxPosition.lineHeight / containerBox.height) * 100;\n\n switch (cue.lineAlign) {\n case \"center\":\n linePos -= (calculatedPercentage / 2);\n break;\n case \"end\":\n linePos -= calculatedPercentage;\n break;\n }\n\n // Apply initial line position to the cue box.\n switch (cue.vertical) {\n case \"\":\n styleBox.applyStyles({\n top: styleBox.formatStyle(linePos, \"%\")\n });\n break;\n case \"rl\":\n styleBox.applyStyles({\n left: styleBox.formatStyle(linePos, \"%\")\n });\n break;\n case \"lr\":\n styleBox.applyStyles({\n right: styleBox.formatStyle(linePos, \"%\")\n });\n break;\n }\n\n axis = [ \"+y\", \"-x\", \"+x\", \"-y\" ];\n\n // Get the box position again after we've applied the specified positioning\n // to it.\n boxPosition = new BoxPosition(styleBox);\n }\n\n var bestPosition = findBestPosition(boxPosition, axis);\n styleBox.move(bestPosition.toCSSCompatValues(containerBox));\n}\n\nfunction WebVTT() {\n // Nothing\n}\n\n// Helper to allow strings to be decoded instead of the default binary utf8 data.\nWebVTT.StringDecoder = function() {\n return {\n decode: function(data) {\n if (!data) {\n return \"\";\n }\n if (typeof data !== \"string\") {\n throw new Error(\"Error - expected string data.\");\n }\n return decodeURIComponent(encodeURIComponent(data));\n }\n };\n};\n\nWebVTT.convertCueToDOMTree = function(window, cuetext) {\n if (!window || !cuetext) {\n return null;\n }\n return parseContent(window, cuetext);\n};\n\nvar FONT_SIZE_PERCENT = 0.05;\nvar FONT_STYLE = \"sans-serif\";\nvar CUE_BACKGROUND_PADDING = \"1.5%\";\n\n// Runs the processing model over the cues and regions passed to it.\n// @param overlay A block level element (usually a div) that the computed cues\n// and regions will be placed into.\nWebVTT.processCues = function(window, cues, overlay) {\n if (!window || !cues || !overlay) {\n return null;\n }\n\n // Remove all previous children.\n while (overlay.firstChild) {\n overlay.removeChild(overlay.firstChild);\n }\n\n var paddedOverlay = window.document.createElement(\"div\");\n paddedOverlay.style.position = \"absolute\";\n paddedOverlay.style.left = \"0\";\n paddedOverlay.style.right = \"0\";\n paddedOverlay.style.top = \"0\";\n paddedOverlay.style.bottom = \"0\";\n paddedOverlay.style.margin = CUE_BACKGROUND_PADDING;\n overlay.appendChild(paddedOverlay);\n\n // Determine if we need to compute the display states of the cues. This could\n // be the case if a cue's state has been changed since the last computation or\n // if it has not been computed yet.\n function shouldCompute(cues) {\n for (var i = 0; i < cues.length; i++) {\n if (cues[i].hasBeenReset || !cues[i].displayState) {\n return true;\n }\n }\n return false;\n }\n\n // We don't need to recompute the cues' display states. Just reuse them.\n if (!shouldCompute(cues)) {\n for (var i = 0; i < cues.length; i++) {\n paddedOverlay.appendChild(cues[i].displayState);\n }\n return;\n }\n\n var boxPositions = [],\n containerBox = BoxPosition.getSimpleBoxPosition(paddedOverlay),\n fontSize = Math.round(containerBox.height * FONT_SIZE_PERCENT * 100) / 100;\n var styleOptions = {\n font: fontSize + \"px \" + FONT_STYLE\n };\n\n (function() {\n var styleBox, cue;\n\n for (var i = 0; i < cues.length; i++) {\n cue = cues[i];\n\n // Compute the intial position and styles of the cue div.\n styleBox = new CueStyleBox(window, cue, styleOptions);\n paddedOverlay.appendChild(styleBox.div);\n\n // Move the cue div to it's correct line position.\n moveBoxToLinePosition(window, styleBox, containerBox, boxPositions);\n\n // Remember the computed div so that we don't have to recompute it later\n // if we don't have too.\n cue.displayState = styleBox.div;\n\n boxPositions.push(BoxPosition.getSimpleBoxPosition(styleBox));\n }\n })();\n};\n\nWebVTT.Parser = function(window, vttjs, decoder) {\n if (!decoder) {\n decoder = vttjs;\n vttjs = {};\n }\n if (!vttjs) {\n vttjs = {};\n }\n\n this.window = window;\n this.vttjs = vttjs;\n this.state = \"INITIAL\";\n this.buffer = \"\";\n this.decoder = decoder || new TextDecoder(\"utf8\");\n this.regionList = [];\n};\n\nWebVTT.Parser.prototype = {\n // If the error is a ParsingError then report it to the consumer if\n // possible. If it's not a ParsingError then throw it like normal.\n reportOrThrowError: function(e) {\n if (e instanceof ParsingError) {\n this.onparsingerror && this.onparsingerror(e);\n } else {\n throw e;\n }\n },\n parse: function (data) {\n var self = this;\n\n // If there is no data then we won't decode it, but will just try to parse\n // whatever is in buffer already. This may occur in circumstances, for\n // example when flush() is called.\n if (data) {\n // Try to decode the data that we received.\n self.buffer += self.decoder.decode(data, {stream: true});\n }\n\n function collectNextLine() {\n var buffer = self.buffer;\n var pos = 0;\n while (pos < buffer.length && buffer[pos] !== '\\r' && buffer[pos] !== '\\n') {\n ++pos;\n }\n var line = buffer.substr(0, pos);\n // Advance the buffer early in case we fail below.\n if (buffer[pos] === '\\r') {\n ++pos;\n }\n if (buffer[pos] === '\\n') {\n ++pos;\n }\n self.buffer = buffer.substr(pos);\n return line;\n }\n\n // 3.4 WebVTT region and WebVTT region settings syntax\n function parseRegion(input) {\n var settings = new Settings();\n\n parseOptions(input, function (k, v) {\n switch (k) {\n case \"id\":\n settings.set(k, v);\n break;\n case \"width\":\n settings.percent(k, v);\n break;\n case \"lines\":\n settings.integer(k, v);\n break;\n case \"regionanchor\":\n case \"viewportanchor\":\n var xy = v.split(',');\n if (xy.length !== 2) {\n break;\n }\n // We have to make sure both x and y parse, so use a temporary\n // settings object here.\n var anchor = new Settings();\n anchor.percent(\"x\", xy[0]);\n anchor.percent(\"y\", xy[1]);\n if (!anchor.has(\"x\") || !anchor.has(\"y\")) {\n break;\n }\n settings.set(k + \"X\", anchor.get(\"x\"));\n settings.set(k + \"Y\", anchor.get(\"y\"));\n break;\n case \"scroll\":\n settings.alt(k, v, [\"up\"]);\n break;\n }\n }, /=/, /\\s/);\n\n // Create the region, using default values for any values that were not\n // specified.\n if (settings.has(\"id\")) {\n var region = new (self.vttjs.VTTRegion || self.window.VTTRegion)();\n region.width = settings.get(\"width\", 100);\n region.lines = settings.get(\"lines\", 3);\n region.regionAnchorX = settings.get(\"regionanchorX\", 0);\n region.regionAnchorY = settings.get(\"regionanchorY\", 100);\n region.viewportAnchorX = settings.get(\"viewportanchorX\", 0);\n region.viewportAnchorY = settings.get(\"viewportanchorY\", 100);\n region.scroll = settings.get(\"scroll\", \"\");\n // Register the region.\n self.onregion && self.onregion(region);\n // Remember the VTTRegion for later in case we parse any VTTCues that\n // reference it.\n self.regionList.push({\n id: settings.get(\"id\"),\n region: region\n });\n }\n }\n\n // draft-pantos-http-live-streaming-20\n // https://tools.ietf.org/html/draft-pantos-http-live-streaming-20#section-3.5\n // 3.5 WebVTT\n function parseTimestampMap(input) {\n var settings = new Settings();\n\n parseOptions(input, function(k, v) {\n switch(k) {\n case \"MPEGT\":\n settings.integer(k + 'S', v);\n break;\n case \"LOCA\":\n settings.set(k + 'L', parseTimeStamp(v));\n break;\n }\n }, /[^\\d]:/, /,/);\n\n self.ontimestampmap && self.ontimestampmap({\n \"MPEGTS\": settings.get(\"MPEGTS\"),\n \"LOCAL\": settings.get(\"LOCAL\")\n });\n }\n\n // 3.2 WebVTT metadata header syntax\n function parseHeader(input) {\n if (input.match(/X-TIMESTAMP-MAP/)) {\n // This line contains HLS X-TIMESTAMP-MAP metadata\n parseOptions(input, function(k, v) {\n switch(k) {\n case \"X-TIMESTAMP-MAP\":\n parseTimestampMap(v);\n break;\n }\n }, /=/);\n } else {\n parseOptions(input, function (k, v) {\n switch (k) {\n case \"Region\":\n // 3.3 WebVTT region metadata header syntax\n parseRegion(v);\n break;\n }\n }, /:/);\n }\n\n }\n\n // 5.1 WebVTT file parsing.\n try {\n var line;\n if (self.state === \"INITIAL\") {\n // We can't start parsing until we have the first line.\n if (!/\\r\\n|\\n/.test(self.buffer)) {\n return this;\n }\n\n line = collectNextLine();\n\n var m = line.match(/^WEBVTT([ \\t].*)?$/);\n if (!m || !m[0]) {\n throw new ParsingError(ParsingError.Errors.BadSignature);\n }\n\n self.state = \"HEADER\";\n }\n\n var alreadyCollectedLine = false;\n while (self.buffer) {\n // We can't parse a line until we have the full line.\n if (!/\\r\\n|\\n/.test(self.buffer)) {\n return this;\n }\n\n if (!alreadyCollectedLine) {\n line = collectNextLine();\n } else {\n alreadyCollectedLine = false;\n }\n\n switch (self.state) {\n case \"HEADER\":\n // 13-18 - Allow a header (metadata) under the WEBVTT line.\n if (/:/.test(line)) {\n parseHeader(line);\n } else if (!line) {\n // An empty line terminates the header and starts the body (cues).\n self.state = \"ID\";\n }\n continue;\n case \"NOTE\":\n // Ignore NOTE blocks.\n if (!line) {\n self.state = \"ID\";\n }\n continue;\n case \"ID\":\n // Check for the start of NOTE blocks.\n if (/^NOTE($|[ \\t])/.test(line)) {\n self.state = \"NOTE\";\n break;\n }\n // 19-29 - Allow any number of line terminators, then initialize new cue values.\n if (!line) {\n continue;\n }\n self.cue = new (self.vttjs.VTTCue || self.window.VTTCue)(0, 0, \"\");\n // Safari still uses the old middle value and won't accept center\n try {\n self.cue.align = \"center\";\n } catch (e) {\n self.cue.align = \"middle\";\n }\n self.state = \"CUE\";\n // 30-39 - Check if self line contains an optional identifier or timing data.\n if (line.indexOf(\"-->\") === -1) {\n self.cue.id = line;\n continue;\n }\n // Process line as start of a cue.\n /*falls through*/\n case \"CUE\":\n // 40 - Collect cue timings and settings.\n try {\n parseCue(line, self.cue, self.regionList);\n } catch (e) {\n self.reportOrThrowError(e);\n // In case of an error ignore rest of the cue.\n self.cue = null;\n self.state = \"BADCUE\";\n continue;\n }\n self.state = \"CUETEXT\";\n continue;\n case \"CUETEXT\":\n var hasSubstring = line.indexOf(\"-->\") !== -1;\n // 34 - If we have an empty line then report the cue.\n // 35 - If we have the special substring '-->' then report the cue,\n // but do not collect the line as we need to process the current\n // one as a new cue.\n if (!line || hasSubstring && (alreadyCollectedLine = true)) {\n // We are done parsing self cue.\n self.oncue && self.oncue(self.cue);\n self.cue = null;\n self.state = \"ID\";\n continue;\n }\n if (self.cue.text) {\n self.cue.text += \"\\n\";\n }\n self.cue.text += line.replace(/\\u2028/g, '\\n').replace(/u2029/g, '\\n');\n continue;\n case \"BADCUE\": // BADCUE\n // 54-62 - Collect and discard the remaining cue.\n if (!line) {\n self.state = \"ID\";\n }\n continue;\n }\n }\n } catch (e) {\n self.reportOrThrowError(e);\n\n // If we are currently parsing a cue, report what we have.\n if (self.state === \"CUETEXT\" && self.cue && self.oncue) {\n self.oncue(self.cue);\n }\n self.cue = null;\n // Enter BADWEBVTT state if header was not parsed correctly otherwise\n // another exception occurred so enter BADCUE state.\n self.state = self.state === \"INITIAL\" ? \"BADWEBVTT\" : \"BADCUE\";\n }\n return this;\n },\n flush: function () {\n var self = this;\n try {\n // Finish decoding the stream.\n self.buffer += self.decoder.decode();\n // Synthesize the end of the current cue or region.\n if (self.cue || self.state === \"HEADER\") {\n self.buffer += \"\\n\\n\";\n self.parse();\n }\n // If we've flushed, parsed, and we're still on the INITIAL state then\n // that means we don't have enough of the stream to parse the first\n // line.\n if (self.state === \"INITIAL\") {\n throw new ParsingError(ParsingError.Errors.BadSignature);\n }\n } catch(e) {\n self.reportOrThrowError(e);\n }\n self.onflush && self.onflush();\n return this;\n }\n};\n\nmodule.exports = WebVTT;\n","/**\n * Copyright 2013 vtt.js Contributors\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nvar autoKeyword = \"auto\";\nvar directionSetting = {\n \"\": 1,\n \"lr\": 1,\n \"rl\": 1\n};\nvar alignSetting = {\n \"start\": 1,\n \"center\": 1,\n \"end\": 1,\n \"left\": 1,\n \"right\": 1,\n \"auto\": 1,\n \"line-left\": 1,\n \"line-right\": 1\n};\n\nfunction findDirectionSetting(value) {\n if (typeof value !== \"string\") {\n return false;\n }\n var dir = directionSetting[value.toLowerCase()];\n return dir ? value.toLowerCase() : false;\n}\n\nfunction findAlignSetting(value) {\n if (typeof value !== \"string\") {\n return false;\n }\n var align = alignSetting[value.toLowerCase()];\n return align ? value.toLowerCase() : false;\n}\n\nfunction VTTCue(startTime, endTime, text) {\n /**\n * Shim implementation specific properties. These properties are not in\n * the spec.\n */\n\n // Lets us know when the VTTCue's data has changed in such a way that we need\n // to recompute its display state. This lets us compute its display state\n // lazily.\n this.hasBeenReset = false;\n\n /**\n * VTTCue and TextTrackCue properties\n * http://dev.w3.org/html5/webvtt/#vttcue-interface\n */\n\n var _id = \"\";\n var _pauseOnExit = false;\n var _startTime = startTime;\n var _endTime = endTime;\n var _text = text;\n var _region = null;\n var _vertical = \"\";\n var _snapToLines = true;\n var _line = \"auto\";\n var _lineAlign = \"start\";\n var _position = \"auto\";\n var _positionAlign = \"auto\";\n var _size = 100;\n var _align = \"center\";\n\n Object.defineProperties(this, {\n \"id\": {\n enumerable: true,\n get: function() {\n return _id;\n },\n set: function(value) {\n _id = \"\" + value;\n }\n },\n\n \"pauseOnExit\": {\n enumerable: true,\n get: function() {\n return _pauseOnExit;\n },\n set: function(value) {\n _pauseOnExit = !!value;\n }\n },\n\n \"startTime\": {\n enumerable: true,\n get: function() {\n return _startTime;\n },\n set: function(value) {\n if (typeof value !== \"number\") {\n throw new TypeError(\"Start time must be set to a number.\");\n }\n _startTime = value;\n this.hasBeenReset = true;\n }\n },\n\n \"endTime\": {\n enumerable: true,\n get: function() {\n return _endTime;\n },\n set: function(value) {\n if (typeof value !== \"number\") {\n throw new TypeError(\"End time must be set to a number.\");\n }\n _endTime = value;\n this.hasBeenReset = true;\n }\n },\n\n \"text\": {\n enumerable: true,\n get: function() {\n return _text;\n },\n set: function(value) {\n _text = \"\" + value;\n this.hasBeenReset = true;\n }\n },\n\n \"region\": {\n enumerable: true,\n get: function() {\n return _region;\n },\n set: function(value) {\n _region = value;\n this.hasBeenReset = true;\n }\n },\n\n \"vertical\": {\n enumerable: true,\n get: function() {\n return _vertical;\n },\n set: function(value) {\n var setting = findDirectionSetting(value);\n // Have to check for false because the setting an be an empty string.\n if (setting === false) {\n throw new SyntaxError(\"Vertical: an invalid or illegal direction string was specified.\");\n }\n _vertical = setting;\n this.hasBeenReset = true;\n }\n },\n\n \"snapToLines\": {\n enumerable: true,\n get: function() {\n return _snapToLines;\n },\n set: function(value) {\n _snapToLines = !!value;\n this.hasBeenReset = true;\n }\n },\n\n \"line\": {\n enumerable: true,\n get: function() {\n return _line;\n },\n set: function(value) {\n if (typeof value !== \"number\" && value !== autoKeyword) {\n throw new SyntaxError(\"Line: an invalid number or illegal string was specified.\");\n }\n _line = value;\n this.hasBeenReset = true;\n }\n },\n\n \"lineAlign\": {\n enumerable: true,\n get: function() {\n return _lineAlign;\n },\n set: function(value) {\n var setting = findAlignSetting(value);\n if (!setting) {\n console.warn(\"lineAlign: an invalid or illegal string was specified.\");\n } else {\n _lineAlign = setting;\n this.hasBeenReset = true;\n }\n }\n },\n\n \"position\": {\n enumerable: true,\n get: function() {\n return _position;\n },\n set: function(value) {\n if (value < 0 || value > 100) {\n throw new Error(\"Position must be between 0 and 100.\");\n }\n _position = value;\n this.hasBeenReset = true;\n }\n },\n\n \"positionAlign\": {\n enumerable: true,\n get: function() {\n return _positionAlign;\n },\n set: function(value) {\n var setting = findAlignSetting(value);\n if (!setting) {\n console.warn(\"positionAlign: an invalid or illegal string was specified.\");\n } else {\n _positionAlign = setting;\n this.hasBeenReset = true;\n }\n }\n },\n\n \"size\": {\n enumerable: true,\n get: function() {\n return _size;\n },\n set: function(value) {\n if (value < 0 || value > 100) {\n throw new Error(\"Size must be between 0 and 100.\");\n }\n _size = value;\n this.hasBeenReset = true;\n }\n },\n\n \"align\": {\n enumerable: true,\n get: function() {\n return _align;\n },\n set: function(value) {\n var setting = findAlignSetting(value);\n if (!setting) {\n throw new SyntaxError(\"align: an invalid or illegal alignment string was specified.\");\n }\n _align = setting;\n this.hasBeenReset = true;\n }\n }\n });\n\n /**\n * Other spec defined properties\n */\n\n // http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html#text-track-cue-display-state\n this.displayState = undefined;\n}\n\n/**\n * VTTCue methods\n */\n\nVTTCue.prototype.getCueAsHTML = function() {\n // Assume WebVTT.convertCueToDOMTree is on the global.\n return WebVTT.convertCueToDOMTree(window, this.text);\n};\n\nmodule.exports = VTTCue;\n","/**\n * Copyright 2013 vtt.js Contributors\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nvar scrollSetting = {\n \"\": true,\n \"up\": true\n};\n\nfunction findScrollSetting(value) {\n if (typeof value !== \"string\") {\n return false;\n }\n var scroll = scrollSetting[value.toLowerCase()];\n return scroll ? value.toLowerCase() : false;\n}\n\nfunction isValidPercentValue(value) {\n return typeof value === \"number\" && (value >= 0 && value <= 100);\n}\n\n// VTTRegion shim http://dev.w3.org/html5/webvtt/#vttregion-interface\nfunction VTTRegion() {\n var _width = 100;\n var _lines = 3;\n var _regionAnchorX = 0;\n var _regionAnchorY = 100;\n var _viewportAnchorX = 0;\n var _viewportAnchorY = 100;\n var _scroll = \"\";\n\n Object.defineProperties(this, {\n \"width\": {\n enumerable: true,\n get: function() {\n return _width;\n },\n set: function(value) {\n if (!isValidPercentValue(value)) {\n throw new Error(\"Width must be between 0 and 100.\");\n }\n _width = value;\n }\n },\n \"lines\": {\n enumerable: true,\n get: function() {\n return _lines;\n },\n set: function(value) {\n if (typeof value !== \"number\") {\n throw new TypeError(\"Lines must be set to a number.\");\n }\n _lines = value;\n }\n },\n \"regionAnchorY\": {\n enumerable: true,\n get: function() {\n return _regionAnchorY;\n },\n set: function(value) {\n if (!isValidPercentValue(value)) {\n throw new Error(\"RegionAnchorX must be between 0 and 100.\");\n }\n _regionAnchorY = value;\n }\n },\n \"regionAnchorX\": {\n enumerable: true,\n get: function() {\n return _regionAnchorX;\n },\n set: function(value) {\n if(!isValidPercentValue(value)) {\n throw new Error(\"RegionAnchorY must be between 0 and 100.\");\n }\n _regionAnchorX = value;\n }\n },\n \"viewportAnchorY\": {\n enumerable: true,\n get: function() {\n return _viewportAnchorY;\n },\n set: function(value) {\n if (!isValidPercentValue(value)) {\n throw new Error(\"ViewportAnchorY must be between 0 and 100.\");\n }\n _viewportAnchorY = value;\n }\n },\n \"viewportAnchorX\": {\n enumerable: true,\n get: function() {\n return _viewportAnchorX;\n },\n set: function(value) {\n if (!isValidPercentValue(value)) {\n throw new Error(\"ViewportAnchorX must be between 0 and 100.\");\n }\n _viewportAnchorX = value;\n }\n },\n \"scroll\": {\n enumerable: true,\n get: function() {\n return _scroll;\n },\n set: function(value) {\n var setting = findScrollSetting(value);\n // Have to check for false as an empty string is a legal value.\n if (setting === false) {\n console.warn(\"Scroll: an invalid or illegal string was specified.\");\n } else {\n _scroll = setting;\n }\n }\n }\n });\n}\n\nmodule.exports = VTTRegion;\n","/* (ignored) */","function _extends() {\n module.exports = _extends = Object.assign ? Object.assign.bind() : function (target) {\n for (var i = 1; i < arguments.length; i++) {\n var source = arguments[i];\n for (var key in source) {\n if (Object.prototype.hasOwnProperty.call(source, key)) {\n target[key] = source[key];\n }\n }\n }\n return target;\n }, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;\n return _extends.apply(this, arguments);\n}\nmodule.exports = _extends, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;","export default function _extends() {\n _extends = Object.assign ? Object.assign.bind() : function (target) {\n for (var i = 1; i < arguments.length; i++) {\n var source = arguments[i];\n for (var key in source) {\n if (Object.prototype.hasOwnProperty.call(source, key)) {\n target[key] = source[key];\n }\n }\n }\n return target;\n };\n return _extends.apply(this, arguments);\n}","/**\n * Dom7 4.0.6\n * Minimalistic JavaScript library for DOM manipulation, with a jQuery-compatible API\n * https://framework7.io/docs/dom7.html\n *\n * Copyright 2023, Vladimir Kharlampidi\n *\n * Licensed under MIT\n *\n * Released on: February 2, 2023\n */\nimport { getWindow, getDocument } from 'ssr-window';\n\n/* eslint-disable no-proto */\nfunction makeReactive(obj) {\n const proto = obj.__proto__;\n Object.defineProperty(obj, '__proto__', {\n get() {\n return proto;\n },\n\n set(value) {\n proto.__proto__ = value;\n }\n\n });\n}\n\nclass Dom7 extends Array {\n constructor(items) {\n if (typeof items === 'number') {\n super(items);\n } else {\n super(...(items || []));\n makeReactive(this);\n }\n }\n\n}\n\nfunction arrayFlat(arr = []) {\n const res = [];\n arr.forEach(el => {\n if (Array.isArray(el)) {\n res.push(...arrayFlat(el));\n } else {\n res.push(el);\n }\n });\n return res;\n}\nfunction arrayFilter(arr, callback) {\n return Array.prototype.filter.call(arr, callback);\n}\nfunction arrayUnique(arr) {\n const uniqueArray = [];\n\n for (let i = 0; i < arr.length; i += 1) {\n if (uniqueArray.indexOf(arr[i]) === -1) uniqueArray.push(arr[i]);\n }\n\n return uniqueArray;\n}\nfunction toCamelCase(string) {\n return string.toLowerCase().replace(/-(.)/g, (match, group) => group.toUpperCase());\n}\n\n// eslint-disable-next-line\n\nfunction qsa(selector, context) {\n if (typeof selector !== 'string') {\n return [selector];\n }\n\n const a = [];\n const res = context.querySelectorAll(selector);\n\n for (let i = 0; i < res.length; i += 1) {\n a.push(res[i]);\n }\n\n return a;\n}\n\nfunction $(selector, context) {\n const window = getWindow();\n const document = getDocument();\n let arr = [];\n\n if (!context && selector instanceof Dom7) {\n return selector;\n }\n\n if (!selector) {\n return new Dom7(arr);\n }\n\n if (typeof selector === 'string') {\n const html = selector.trim();\n\n if (html.indexOf('<') >= 0 && html.indexOf('>') >= 0) {\n let toCreate = 'div';\n if (html.indexOf(' c.split(' ')));\n this.forEach(el => {\n el.classList.add(...classNames);\n });\n return this;\n}\n\nfunction removeClass(...classes) {\n const classNames = arrayFlat(classes.map(c => c.split(' ')));\n this.forEach(el => {\n el.classList.remove(...classNames);\n });\n return this;\n}\n\nfunction toggleClass(...classes) {\n const classNames = arrayFlat(classes.map(c => c.split(' ')));\n this.forEach(el => {\n classNames.forEach(className => {\n el.classList.toggle(className);\n });\n });\n}\n\nfunction hasClass(...classes) {\n const classNames = arrayFlat(classes.map(c => c.split(' ')));\n return arrayFilter(this, el => {\n return classNames.filter(className => el.classList.contains(className)).length > 0;\n }).length > 0;\n}\n\nfunction attr(attrs, value) {\n if (arguments.length === 1 && typeof attrs === 'string') {\n // Get attr\n if (this[0]) return this[0].getAttribute(attrs);\n return undefined;\n } // Set attrs\n\n\n for (let i = 0; i < this.length; i += 1) {\n if (arguments.length === 2) {\n // String\n this[i].setAttribute(attrs, value);\n } else {\n // Object\n for (const attrName in attrs) {\n this[i][attrName] = attrs[attrName];\n this[i].setAttribute(attrName, attrs[attrName]);\n }\n }\n }\n\n return this;\n}\n\nfunction removeAttr(attr) {\n for (let i = 0; i < this.length; i += 1) {\n this[i].removeAttribute(attr);\n }\n\n return this;\n}\n\nfunction prop(props, value) {\n if (arguments.length === 1 && typeof props === 'string') {\n // Get prop\n if (this[0]) return this[0][props];\n } else {\n // Set props\n for (let i = 0; i < this.length; i += 1) {\n if (arguments.length === 2) {\n // String\n this[i][props] = value;\n } else {\n // Object\n for (const propName in props) {\n this[i][propName] = props[propName];\n }\n }\n }\n\n return this;\n }\n\n return this;\n}\n\nfunction data(key, value) {\n let el;\n\n if (typeof value === 'undefined') {\n el = this[0];\n if (!el) return undefined; // Get value\n\n if (el.dom7ElementDataStorage && key in el.dom7ElementDataStorage) {\n return el.dom7ElementDataStorage[key];\n }\n\n const dataKey = el.getAttribute(`data-${key}`);\n\n if (dataKey) {\n return dataKey;\n }\n\n return undefined;\n } // Set value\n\n\n for (let i = 0; i < this.length; i += 1) {\n el = this[i];\n if (!el.dom7ElementDataStorage) el.dom7ElementDataStorage = {};\n el.dom7ElementDataStorage[key] = value;\n }\n\n return this;\n}\n\nfunction removeData(key) {\n for (let i = 0; i < this.length; i += 1) {\n const el = this[i];\n\n if (el.dom7ElementDataStorage && el.dom7ElementDataStorage[key]) {\n el.dom7ElementDataStorage[key] = null;\n delete el.dom7ElementDataStorage[key];\n }\n }\n}\n\nfunction dataset() {\n const el = this[0];\n if (!el) return undefined;\n const dataset = {}; // eslint-disable-line\n\n if (el.dataset) {\n for (const dataKey in el.dataset) {\n dataset[dataKey] = el.dataset[dataKey];\n }\n } else {\n for (let i = 0; i < el.attributes.length; i += 1) {\n const attr = el.attributes[i];\n\n if (attr.name.indexOf('data-') >= 0) {\n dataset[toCamelCase(attr.name.split('data-')[1])] = attr.value;\n }\n }\n }\n\n for (const key in dataset) {\n if (dataset[key] === 'false') dataset[key] = false;else if (dataset[key] === 'true') dataset[key] = true;else if (parseFloat(dataset[key]) === dataset[key] * 1) dataset[key] *= 1;\n }\n\n return dataset;\n}\n\nfunction val(value) {\n if (typeof value === 'undefined') {\n // get value\n const el = this[0];\n if (!el) return undefined;\n\n if (el.multiple && el.nodeName.toLowerCase() === 'select') {\n const values = [];\n\n for (let i = 0; i < el.selectedOptions.length; i += 1) {\n values.push(el.selectedOptions[i].value);\n }\n\n return values;\n }\n\n return el.value;\n } // set value\n\n\n for (let i = 0; i < this.length; i += 1) {\n const el = this[i];\n\n if (Array.isArray(value) && el.multiple && el.nodeName.toLowerCase() === 'select') {\n for (let j = 0; j < el.options.length; j += 1) {\n el.options[j].selected = value.indexOf(el.options[j].value) >= 0;\n }\n } else {\n el.value = value;\n }\n }\n\n return this;\n}\n\nfunction value(value) {\n return this.val(value);\n}\n\nfunction transform(transform) {\n for (let i = 0; i < this.length; i += 1) {\n this[i].style.transform = transform;\n }\n\n return this;\n}\n\nfunction transition(duration) {\n for (let i = 0; i < this.length; i += 1) {\n this[i].style.transitionDuration = typeof duration !== 'string' ? `${duration}ms` : duration;\n }\n\n return this;\n}\n\nfunction on(...args) {\n let [eventType, targetSelector, listener, capture] = args;\n\n if (typeof args[1] === 'function') {\n [eventType, listener, capture] = args;\n targetSelector = undefined;\n }\n\n if (!capture) capture = false;\n\n function handleLiveEvent(e) {\n const target = e.target;\n if (!target) return;\n const eventData = e.target.dom7EventData || [];\n\n if (eventData.indexOf(e) < 0) {\n eventData.unshift(e);\n }\n\n if ($(target).is(targetSelector)) listener.apply(target, eventData);else {\n const parents = $(target).parents(); // eslint-disable-line\n\n for (let k = 0; k < parents.length; k += 1) {\n if ($(parents[k]).is(targetSelector)) listener.apply(parents[k], eventData);\n }\n }\n }\n\n function handleEvent(e) {\n const eventData = e && e.target ? e.target.dom7EventData || [] : [];\n\n if (eventData.indexOf(e) < 0) {\n eventData.unshift(e);\n }\n\n listener.apply(this, eventData);\n }\n\n const events = eventType.split(' ');\n let j;\n\n for (let i = 0; i < this.length; i += 1) {\n const el = this[i];\n\n if (!targetSelector) {\n for (j = 0; j < events.length; j += 1) {\n const event = events[j];\n if (!el.dom7Listeners) el.dom7Listeners = {};\n if (!el.dom7Listeners[event]) el.dom7Listeners[event] = [];\n el.dom7Listeners[event].push({\n listener,\n proxyListener: handleEvent\n });\n el.addEventListener(event, handleEvent, capture);\n }\n } else {\n // Live events\n for (j = 0; j < events.length; j += 1) {\n const event = events[j];\n if (!el.dom7LiveListeners) el.dom7LiveListeners = {};\n if (!el.dom7LiveListeners[event]) el.dom7LiveListeners[event] = [];\n el.dom7LiveListeners[event].push({\n listener,\n proxyListener: handleLiveEvent\n });\n el.addEventListener(event, handleLiveEvent, capture);\n }\n }\n }\n\n return this;\n}\n\nfunction off(...args) {\n let [eventType, targetSelector, listener, capture] = args;\n\n if (typeof args[1] === 'function') {\n [eventType, listener, capture] = args;\n targetSelector = undefined;\n }\n\n if (!capture) capture = false;\n const events = eventType.split(' ');\n\n for (let i = 0; i < events.length; i += 1) {\n const event = events[i];\n\n for (let j = 0; j < this.length; j += 1) {\n const el = this[j];\n let handlers;\n\n if (!targetSelector && el.dom7Listeners) {\n handlers = el.dom7Listeners[event];\n } else if (targetSelector && el.dom7LiveListeners) {\n handlers = el.dom7LiveListeners[event];\n }\n\n if (handlers && handlers.length) {\n for (let k = handlers.length - 1; k >= 0; k -= 1) {\n const handler = handlers[k];\n\n if (listener && handler.listener === listener) {\n el.removeEventListener(event, handler.proxyListener, capture);\n handlers.splice(k, 1);\n } else if (listener && handler.listener && handler.listener.dom7proxy && handler.listener.dom7proxy === listener) {\n el.removeEventListener(event, handler.proxyListener, capture);\n handlers.splice(k, 1);\n } else if (!listener) {\n el.removeEventListener(event, handler.proxyListener, capture);\n handlers.splice(k, 1);\n }\n }\n }\n }\n }\n\n return this;\n}\n\nfunction once(...args) {\n const dom = this;\n let [eventName, targetSelector, listener, capture] = args;\n\n if (typeof args[1] === 'function') {\n [eventName, listener, capture] = args;\n targetSelector = undefined;\n }\n\n function onceHandler(...eventArgs) {\n listener.apply(this, eventArgs);\n dom.off(eventName, targetSelector, onceHandler, capture);\n\n if (onceHandler.dom7proxy) {\n delete onceHandler.dom7proxy;\n }\n }\n\n onceHandler.dom7proxy = listener;\n return dom.on(eventName, targetSelector, onceHandler, capture);\n}\n\nfunction trigger(...args) {\n const window = getWindow();\n const events = args[0].split(' ');\n const eventData = args[1];\n\n for (let i = 0; i < events.length; i += 1) {\n const event = events[i];\n\n for (let j = 0; j < this.length; j += 1) {\n const el = this[j];\n\n if (window.CustomEvent) {\n const evt = new window.CustomEvent(event, {\n detail: eventData,\n bubbles: true,\n cancelable: true\n });\n el.dom7EventData = args.filter((data, dataIndex) => dataIndex > 0);\n el.dispatchEvent(evt);\n el.dom7EventData = [];\n delete el.dom7EventData;\n }\n }\n }\n\n return this;\n}\n\nfunction transitionStart(callback) {\n const dom = this;\n\n function fireCallBack(e) {\n if (e.target !== this) return;\n callback.call(this, e);\n dom.off('transitionstart', fireCallBack);\n }\n\n if (callback) {\n dom.on('transitionstart', fireCallBack);\n }\n\n return this;\n}\n\nfunction transitionEnd(callback) {\n const dom = this;\n\n function fireCallBack(e) {\n if (e.target !== this) return;\n callback.call(this, e);\n dom.off('transitionend', fireCallBack);\n }\n\n if (callback) {\n dom.on('transitionend', fireCallBack);\n }\n\n return this;\n}\n\nfunction animationEnd(callback) {\n const dom = this;\n\n function fireCallBack(e) {\n if (e.target !== this) return;\n callback.call(this, e);\n dom.off('animationend', fireCallBack);\n }\n\n if (callback) {\n dom.on('animationend', fireCallBack);\n }\n\n return this;\n}\n\nfunction width() {\n const window = getWindow();\n\n if (this[0] === window) {\n return window.innerWidth;\n }\n\n if (this.length > 0) {\n return parseFloat(this.css('width'));\n }\n\n return null;\n}\n\nfunction outerWidth(includeMargins) {\n if (this.length > 0) {\n if (includeMargins) {\n const styles = this.styles();\n return this[0].offsetWidth + parseFloat(styles.getPropertyValue('margin-right')) + parseFloat(styles.getPropertyValue('margin-left'));\n }\n\n return this[0].offsetWidth;\n }\n\n return null;\n}\n\nfunction height() {\n const window = getWindow();\n\n if (this[0] === window) {\n return window.innerHeight;\n }\n\n if (this.length > 0) {\n return parseFloat(this.css('height'));\n }\n\n return null;\n}\n\nfunction outerHeight(includeMargins) {\n if (this.length > 0) {\n if (includeMargins) {\n const styles = this.styles();\n return this[0].offsetHeight + parseFloat(styles.getPropertyValue('margin-top')) + parseFloat(styles.getPropertyValue('margin-bottom'));\n }\n\n return this[0].offsetHeight;\n }\n\n return null;\n}\n\nfunction offset() {\n if (this.length > 0) {\n const window = getWindow();\n const document = getDocument();\n const el = this[0];\n const box = el.getBoundingClientRect();\n const body = document.body;\n const clientTop = el.clientTop || body.clientTop || 0;\n const clientLeft = el.clientLeft || body.clientLeft || 0;\n const scrollTop = el === window ? window.scrollY : el.scrollTop;\n const scrollLeft = el === window ? window.scrollX : el.scrollLeft;\n return {\n top: box.top + scrollTop - clientTop,\n left: box.left + scrollLeft - clientLeft\n };\n }\n\n return null;\n}\n\nfunction hide() {\n for (let i = 0; i < this.length; i += 1) {\n this[i].style.display = 'none';\n }\n\n return this;\n}\n\nfunction show() {\n const window = getWindow();\n\n for (let i = 0; i < this.length; i += 1) {\n const el = this[i];\n\n if (el.style.display === 'none') {\n el.style.display = '';\n }\n\n if (window.getComputedStyle(el, null).getPropertyValue('display') === 'none') {\n // Still not visible\n el.style.display = 'block';\n }\n }\n\n return this;\n}\n\nfunction styles() {\n const window = getWindow();\n if (this[0]) return window.getComputedStyle(this[0], null);\n return {};\n}\n\nfunction css(props, value) {\n const window = getWindow();\n let i;\n\n if (arguments.length === 1) {\n if (typeof props === 'string') {\n // .css('width')\n if (this[0]) return window.getComputedStyle(this[0], null).getPropertyValue(props);\n } else {\n // .css({ width: '100px' })\n for (i = 0; i < this.length; i += 1) {\n for (const prop in props) {\n this[i].style[prop] = props[prop];\n }\n }\n\n return this;\n }\n }\n\n if (arguments.length === 2 && typeof props === 'string') {\n // .css('width', '100px')\n for (i = 0; i < this.length; i += 1) {\n this[i].style[props] = value;\n }\n\n return this;\n }\n\n return this;\n}\n\nfunction each(callback) {\n if (!callback) return this;\n this.forEach((el, index) => {\n callback.apply(el, [el, index]);\n });\n return this;\n}\n\nfunction filter(callback) {\n const result = arrayFilter(this, callback);\n return $(result);\n}\n\nfunction html(html) {\n if (typeof html === 'undefined') {\n return this[0] ? this[0].innerHTML : null;\n }\n\n for (let i = 0; i < this.length; i += 1) {\n this[i].innerHTML = html;\n }\n\n return this;\n}\n\nfunction text(text) {\n if (typeof text === 'undefined') {\n return this[0] ? this[0].textContent.trim() : null;\n }\n\n for (let i = 0; i < this.length; i += 1) {\n this[i].textContent = text;\n }\n\n return this;\n}\n\nfunction is(selector) {\n const window = getWindow();\n const document = getDocument();\n const el = this[0];\n let compareWith;\n let i;\n if (!el || typeof selector === 'undefined') return false;\n\n if (typeof selector === 'string') {\n if (el.matches) return el.matches(selector);\n if (el.webkitMatchesSelector) return el.webkitMatchesSelector(selector);\n if (el.msMatchesSelector) return el.msMatchesSelector(selector);\n compareWith = $(selector);\n\n for (i = 0; i < compareWith.length; i += 1) {\n if (compareWith[i] === el) return true;\n }\n\n return false;\n }\n\n if (selector === document) {\n return el === document;\n }\n\n if (selector === window) {\n return el === window;\n }\n\n if (selector.nodeType || selector instanceof Dom7) {\n compareWith = selector.nodeType ? [selector] : selector;\n\n for (i = 0; i < compareWith.length; i += 1) {\n if (compareWith[i] === el) return true;\n }\n\n return false;\n }\n\n return false;\n}\n\nfunction index() {\n let child = this[0];\n let i;\n\n if (child) {\n i = 0; // eslint-disable-next-line\n\n while ((child = child.previousSibling) !== null) {\n if (child.nodeType === 1) i += 1;\n }\n\n return i;\n }\n\n return undefined;\n}\n\nfunction eq(index) {\n if (typeof index === 'undefined') return this;\n const length = this.length;\n\n if (index > length - 1) {\n return $([]);\n }\n\n if (index < 0) {\n const returnIndex = length + index;\n if (returnIndex < 0) return $([]);\n return $([this[returnIndex]]);\n }\n\n return $([this[index]]);\n}\n\nfunction append(...els) {\n let newChild;\n const document = getDocument();\n\n for (let k = 0; k < els.length; k += 1) {\n newChild = els[k];\n\n for (let i = 0; i < this.length; i += 1) {\n if (typeof newChild === 'string') {\n const tempDiv = document.createElement('div');\n tempDiv.innerHTML = newChild;\n\n while (tempDiv.firstChild) {\n this[i].appendChild(tempDiv.firstChild);\n }\n } else if (newChild instanceof Dom7) {\n for (let j = 0; j < newChild.length; j += 1) {\n this[i].appendChild(newChild[j]);\n }\n } else {\n this[i].appendChild(newChild);\n }\n }\n }\n\n return this;\n}\n\nfunction appendTo(parent) {\n $(parent).append(this);\n return this;\n}\n\nfunction prepend(newChild) {\n const document = getDocument();\n let i;\n let j;\n\n for (i = 0; i < this.length; i += 1) {\n if (typeof newChild === 'string') {\n const tempDiv = document.createElement('div');\n tempDiv.innerHTML = newChild;\n\n for (j = tempDiv.childNodes.length - 1; j >= 0; j -= 1) {\n this[i].insertBefore(tempDiv.childNodes[j], this[i].childNodes[0]);\n }\n } else if (newChild instanceof Dom7) {\n for (j = 0; j < newChild.length; j += 1) {\n this[i].insertBefore(newChild[j], this[i].childNodes[0]);\n }\n } else {\n this[i].insertBefore(newChild, this[i].childNodes[0]);\n }\n }\n\n return this;\n}\n\nfunction prependTo(parent) {\n $(parent).prepend(this);\n return this;\n}\n\nfunction insertBefore(selector) {\n const before = $(selector);\n\n for (let i = 0; i < this.length; i += 1) {\n if (before.length === 1) {\n before[0].parentNode.insertBefore(this[i], before[0]);\n } else if (before.length > 1) {\n for (let j = 0; j < before.length; j += 1) {\n before[j].parentNode.insertBefore(this[i].cloneNode(true), before[j]);\n }\n }\n }\n}\n\nfunction insertAfter(selector) {\n const after = $(selector);\n\n for (let i = 0; i < this.length; i += 1) {\n if (after.length === 1) {\n after[0].parentNode.insertBefore(this[i], after[0].nextSibling);\n } else if (after.length > 1) {\n for (let j = 0; j < after.length; j += 1) {\n after[j].parentNode.insertBefore(this[i].cloneNode(true), after[j].nextSibling);\n }\n }\n }\n}\n\nfunction next(selector) {\n if (this.length > 0) {\n if (selector) {\n if (this[0].nextElementSibling && $(this[0].nextElementSibling).is(selector)) {\n return $([this[0].nextElementSibling]);\n }\n\n return $([]);\n }\n\n if (this[0].nextElementSibling) return $([this[0].nextElementSibling]);\n return $([]);\n }\n\n return $([]);\n}\n\nfunction nextAll(selector) {\n const nextEls = [];\n let el = this[0];\n if (!el) return $([]);\n\n while (el.nextElementSibling) {\n const next = el.nextElementSibling; // eslint-disable-line\n\n if (selector) {\n if ($(next).is(selector)) nextEls.push(next);\n } else nextEls.push(next);\n\n el = next;\n }\n\n return $(nextEls);\n}\n\nfunction prev(selector) {\n if (this.length > 0) {\n const el = this[0];\n\n if (selector) {\n if (el.previousElementSibling && $(el.previousElementSibling).is(selector)) {\n return $([el.previousElementSibling]);\n }\n\n return $([]);\n }\n\n if (el.previousElementSibling) return $([el.previousElementSibling]);\n return $([]);\n }\n\n return $([]);\n}\n\nfunction prevAll(selector) {\n const prevEls = [];\n let el = this[0];\n if (!el) return $([]);\n\n while (el.previousElementSibling) {\n const prev = el.previousElementSibling; // eslint-disable-line\n\n if (selector) {\n if ($(prev).is(selector)) prevEls.push(prev);\n } else prevEls.push(prev);\n\n el = prev;\n }\n\n return $(prevEls);\n}\n\nfunction siblings(selector) {\n return this.nextAll(selector).add(this.prevAll(selector));\n}\n\nfunction parent(selector) {\n const parents = []; // eslint-disable-line\n\n for (let i = 0; i < this.length; i += 1) {\n if (this[i].parentNode !== null) {\n if (selector) {\n if ($(this[i].parentNode).is(selector)) parents.push(this[i].parentNode);\n } else {\n parents.push(this[i].parentNode);\n }\n }\n }\n\n return $(parents);\n}\n\nfunction parents(selector) {\n const parents = []; // eslint-disable-line\n\n for (let i = 0; i < this.length; i += 1) {\n let parent = this[i].parentNode; // eslint-disable-line\n\n while (parent) {\n if (selector) {\n if ($(parent).is(selector)) parents.push(parent);\n } else {\n parents.push(parent);\n }\n\n parent = parent.parentNode;\n }\n }\n\n return $(parents);\n}\n\nfunction closest(selector) {\n let closest = this; // eslint-disable-line\n\n if (typeof selector === 'undefined') {\n return $([]);\n }\n\n if (!closest.is(selector)) {\n closest = closest.parents(selector).eq(0);\n }\n\n return closest;\n}\n\nfunction find(selector) {\n const foundElements = [];\n\n for (let i = 0; i < this.length; i += 1) {\n const found = this[i].querySelectorAll(selector);\n\n for (let j = 0; j < found.length; j += 1) {\n foundElements.push(found[j]);\n }\n }\n\n return $(foundElements);\n}\n\nfunction children(selector) {\n const children = []; // eslint-disable-line\n\n for (let i = 0; i < this.length; i += 1) {\n const childNodes = this[i].children;\n\n for (let j = 0; j < childNodes.length; j += 1) {\n if (!selector || $(childNodes[j]).is(selector)) {\n children.push(childNodes[j]);\n }\n }\n }\n\n return $(children);\n}\n\nfunction remove() {\n for (let i = 0; i < this.length; i += 1) {\n if (this[i].parentNode) this[i].parentNode.removeChild(this[i]);\n }\n\n return this;\n}\n\nfunction detach() {\n return this.remove();\n}\n\nfunction add(...els) {\n const dom = this;\n let i;\n let j;\n\n for (i = 0; i < els.length; i += 1) {\n const toAdd = $(els[i]);\n\n for (j = 0; j < toAdd.length; j += 1) {\n dom.push(toAdd[j]);\n }\n }\n\n return dom;\n}\n\nfunction empty() {\n for (let i = 0; i < this.length; i += 1) {\n const el = this[i];\n\n if (el.nodeType === 1) {\n for (let j = 0; j < el.childNodes.length; j += 1) {\n if (el.childNodes[j].parentNode) {\n el.childNodes[j].parentNode.removeChild(el.childNodes[j]);\n }\n }\n\n el.textContent = '';\n }\n }\n\n return this;\n}\n\n// eslint-disable-next-line\n\nfunction scrollTo(...args) {\n const window = getWindow();\n let [left, top, duration, easing, callback] = args;\n\n if (args.length === 4 && typeof easing === 'function') {\n callback = easing;\n [left, top, duration, callback, easing] = args;\n }\n\n if (typeof easing === 'undefined') easing = 'swing';\n return this.each(function animate() {\n const el = this;\n let currentTop;\n let currentLeft;\n let maxTop;\n let maxLeft;\n let newTop;\n let newLeft;\n let scrollTop; // eslint-disable-line\n\n let scrollLeft; // eslint-disable-line\n\n let animateTop = top > 0 || top === 0;\n let animateLeft = left > 0 || left === 0;\n\n if (typeof easing === 'undefined') {\n easing = 'swing';\n }\n\n if (animateTop) {\n currentTop = el.scrollTop;\n\n if (!duration) {\n el.scrollTop = top;\n }\n }\n\n if (animateLeft) {\n currentLeft = el.scrollLeft;\n\n if (!duration) {\n el.scrollLeft = left;\n }\n }\n\n if (!duration) return;\n\n if (animateTop) {\n maxTop = el.scrollHeight - el.offsetHeight;\n newTop = Math.max(Math.min(top, maxTop), 0);\n }\n\n if (animateLeft) {\n maxLeft = el.scrollWidth - el.offsetWidth;\n newLeft = Math.max(Math.min(left, maxLeft), 0);\n }\n\n let startTime = null;\n if (animateTop && newTop === currentTop) animateTop = false;\n if (animateLeft && newLeft === currentLeft) animateLeft = false;\n\n function render(time = new Date().getTime()) {\n if (startTime === null) {\n startTime = time;\n }\n\n const progress = Math.max(Math.min((time - startTime) / duration, 1), 0);\n const easeProgress = easing === 'linear' ? progress : 0.5 - Math.cos(progress * Math.PI) / 2;\n let done;\n if (animateTop) scrollTop = currentTop + easeProgress * (newTop - currentTop);\n if (animateLeft) scrollLeft = currentLeft + easeProgress * (newLeft - currentLeft);\n\n if (animateTop && newTop > currentTop && scrollTop >= newTop) {\n el.scrollTop = newTop;\n done = true;\n }\n\n if (animateTop && newTop < currentTop && scrollTop <= newTop) {\n el.scrollTop = newTop;\n done = true;\n }\n\n if (animateLeft && newLeft > currentLeft && scrollLeft >= newLeft) {\n el.scrollLeft = newLeft;\n done = true;\n }\n\n if (animateLeft && newLeft < currentLeft && scrollLeft <= newLeft) {\n el.scrollLeft = newLeft;\n done = true;\n }\n\n if (done) {\n if (callback) callback();\n return;\n }\n\n if (animateTop) el.scrollTop = scrollTop;\n if (animateLeft) el.scrollLeft = scrollLeft;\n window.requestAnimationFrame(render);\n }\n\n window.requestAnimationFrame(render);\n });\n} // scrollTop(top, duration, easing, callback) {\n\n\nfunction scrollTop(...args) {\n let [top, duration, easing, callback] = args;\n\n if (args.length === 3 && typeof easing === 'function') {\n [top, duration, callback, easing] = args;\n }\n\n const dom = this;\n\n if (typeof top === 'undefined') {\n if (dom.length > 0) return dom[0].scrollTop;\n return null;\n }\n\n return dom.scrollTo(undefined, top, duration, easing, callback);\n}\n\nfunction scrollLeft(...args) {\n let [left, duration, easing, callback] = args;\n\n if (args.length === 3 && typeof easing === 'function') {\n [left, duration, callback, easing] = args;\n }\n\n const dom = this;\n\n if (typeof left === 'undefined') {\n if (dom.length > 0) return dom[0].scrollLeft;\n return null;\n }\n\n return dom.scrollTo(left, undefined, duration, easing, callback);\n}\n\n// eslint-disable-next-line\n\nfunction animate(initialProps, initialParams) {\n const window = getWindow();\n const els = this;\n const a = {\n props: Object.assign({}, initialProps),\n params: Object.assign({\n duration: 300,\n easing: 'swing' // or 'linear'\n\n /* Callbacks\n begin(elements)\n complete(elements)\n progress(elements, complete, remaining, start, tweenValue)\n */\n\n }, initialParams),\n elements: els,\n animating: false,\n que: [],\n\n easingProgress(easing, progress) {\n if (easing === 'swing') {\n return 0.5 - Math.cos(progress * Math.PI) / 2;\n }\n\n if (typeof easing === 'function') {\n return easing(progress);\n }\n\n return progress;\n },\n\n stop() {\n if (a.frameId) {\n window.cancelAnimationFrame(a.frameId);\n }\n\n a.animating = false;\n a.elements.each(el => {\n const element = el;\n delete element.dom7AnimateInstance;\n });\n a.que = [];\n },\n\n done(complete) {\n a.animating = false;\n a.elements.each(el => {\n const element = el;\n delete element.dom7AnimateInstance;\n });\n if (complete) complete(els);\n\n if (a.que.length > 0) {\n const que = a.que.shift();\n a.animate(que[0], que[1]);\n }\n },\n\n animate(props, params) {\n if (a.animating) {\n a.que.push([props, params]);\n return a;\n }\n\n const elements = []; // Define & Cache Initials & Units\n\n a.elements.each((el, index) => {\n let initialFullValue;\n let initialValue;\n let unit;\n let finalValue;\n let finalFullValue;\n if (!el.dom7AnimateInstance) a.elements[index].dom7AnimateInstance = a;\n elements[index] = {\n container: el\n };\n Object.keys(props).forEach(prop => {\n initialFullValue = window.getComputedStyle(el, null).getPropertyValue(prop).replace(',', '.');\n initialValue = parseFloat(initialFullValue);\n unit = initialFullValue.replace(initialValue, '');\n finalValue = parseFloat(props[prop]);\n finalFullValue = props[prop] + unit;\n elements[index][prop] = {\n initialFullValue,\n initialValue,\n unit,\n finalValue,\n finalFullValue,\n currentValue: initialValue\n };\n });\n });\n let startTime = null;\n let time;\n let elementsDone = 0;\n let propsDone = 0;\n let done;\n let began = false;\n a.animating = true;\n\n function render() {\n time = new Date().getTime();\n let progress;\n let easeProgress; // let el;\n\n if (!began) {\n began = true;\n if (params.begin) params.begin(els);\n }\n\n if (startTime === null) {\n startTime = time;\n }\n\n if (params.progress) {\n // eslint-disable-next-line\n params.progress(els, Math.max(Math.min((time - startTime) / params.duration, 1), 0), startTime + params.duration - time < 0 ? 0 : startTime + params.duration - time, startTime);\n }\n\n elements.forEach(element => {\n const el = element;\n if (done || el.done) return;\n Object.keys(props).forEach(prop => {\n if (done || el.done) return;\n progress = Math.max(Math.min((time - startTime) / params.duration, 1), 0);\n easeProgress = a.easingProgress(params.easing, progress);\n const {\n initialValue,\n finalValue,\n unit\n } = el[prop];\n el[prop].currentValue = initialValue + easeProgress * (finalValue - initialValue);\n const currentValue = el[prop].currentValue;\n\n if (finalValue > initialValue && currentValue >= finalValue || finalValue < initialValue && currentValue <= finalValue) {\n el.container.style[prop] = finalValue + unit;\n propsDone += 1;\n\n if (propsDone === Object.keys(props).length) {\n el.done = true;\n elementsDone += 1;\n }\n\n if (elementsDone === elements.length) {\n done = true;\n }\n }\n\n if (done) {\n a.done(params.complete);\n return;\n }\n\n el.container.style[prop] = currentValue + unit;\n });\n });\n if (done) return; // Then call\n\n a.frameId = window.requestAnimationFrame(render);\n }\n\n a.frameId = window.requestAnimationFrame(render);\n return a;\n }\n\n };\n\n if (a.elements.length === 0) {\n return els;\n }\n\n let animateInstance;\n\n for (let i = 0; i < a.elements.length; i += 1) {\n if (a.elements[i].dom7AnimateInstance) {\n animateInstance = a.elements[i].dom7AnimateInstance;\n } else a.elements[i].dom7AnimateInstance = a;\n }\n\n if (!animateInstance) {\n animateInstance = a;\n }\n\n if (initialProps === 'stop') {\n animateInstance.stop();\n } else {\n animateInstance.animate(a.props, a.params);\n }\n\n return els;\n}\n\nfunction stop() {\n const els = this;\n\n for (let i = 0; i < els.length; i += 1) {\n if (els[i].dom7AnimateInstance) {\n els[i].dom7AnimateInstance.stop();\n }\n }\n}\n\nconst noTrigger = 'resize scroll'.split(' ');\n\nfunction shortcut(name) {\n function eventHandler(...args) {\n if (typeof args[0] === 'undefined') {\n for (let i = 0; i < this.length; i += 1) {\n if (noTrigger.indexOf(name) < 0) {\n if (name in this[i]) this[i][name]();else {\n $(this[i]).trigger(name);\n }\n }\n }\n\n return this;\n }\n\n return this.on(name, ...args);\n }\n\n return eventHandler;\n}\n\nconst click = shortcut('click');\nconst blur = shortcut('blur');\nconst focus = shortcut('focus');\nconst focusin = shortcut('focusin');\nconst focusout = shortcut('focusout');\nconst keyup = shortcut('keyup');\nconst keydown = shortcut('keydown');\nconst keypress = shortcut('keypress');\nconst submit = shortcut('submit');\nconst change = shortcut('change');\nconst mousedown = shortcut('mousedown');\nconst mousemove = shortcut('mousemove');\nconst mouseup = shortcut('mouseup');\nconst mouseenter = shortcut('mouseenter');\nconst mouseleave = shortcut('mouseleave');\nconst mouseout = shortcut('mouseout');\nconst mouseover = shortcut('mouseover');\nconst touchstart = shortcut('touchstart');\nconst touchend = shortcut('touchend');\nconst touchmove = shortcut('touchmove');\nconst resize = shortcut('resize');\nconst scroll = shortcut('scroll');\n\nexport default $;\nexport { $, add, addClass, animate, animationEnd, append, appendTo, attr, blur, change, children, click, closest, css, data, dataset, detach, each, empty, eq, filter, find, focus, focusin, focusout, hasClass, height, hide, html, index, insertAfter, insertBefore, is, keydown, keypress, keyup, mousedown, mouseenter, mouseleave, mousemove, mouseout, mouseover, mouseup, next, nextAll, off, offset, on, once, outerHeight, outerWidth, parent, parents, prepend, prependTo, prev, prevAll, prop, remove, removeAttr, removeClass, removeData, resize, scroll, scrollLeft, scrollTo, scrollTop, show, siblings, stop, styles, submit, text, toggleClass, touchend, touchmove, touchstart, transform, transition, transitionEnd, transitionStart, trigger, val, value, width };\n","/**\n * SSR Window 4.0.2\n * Better handling for window object in SSR environment\n * https://github.com/nolimits4web/ssr-window\n *\n * Copyright 2021, Vladimir Kharlampidi\n *\n * Licensed under MIT\n *\n * Released on: December 13, 2021\n */\n/* eslint-disable no-param-reassign */\nfunction isObject(obj) {\n return (obj !== null &&\n typeof obj === 'object' &&\n 'constructor' in obj &&\n obj.constructor === Object);\n}\nfunction extend(target = {}, src = {}) {\n Object.keys(src).forEach((key) => {\n if (typeof target[key] === 'undefined')\n target[key] = src[key];\n else if (isObject(src[key]) &&\n isObject(target[key]) &&\n Object.keys(src[key]).length > 0) {\n extend(target[key], src[key]);\n }\n });\n}\n\nconst ssrDocument = {\n body: {},\n addEventListener() { },\n removeEventListener() { },\n activeElement: {\n blur() { },\n nodeName: '',\n },\n querySelector() {\n return null;\n },\n querySelectorAll() {\n return [];\n },\n getElementById() {\n return null;\n },\n createEvent() {\n return {\n initEvent() { },\n };\n },\n createElement() {\n return {\n children: [],\n childNodes: [],\n style: {},\n setAttribute() { },\n getElementsByTagName() {\n return [];\n },\n };\n },\n createElementNS() {\n return {};\n },\n importNode() {\n return null;\n },\n location: {\n hash: '',\n host: '',\n hostname: '',\n href: '',\n origin: '',\n pathname: '',\n protocol: '',\n search: '',\n },\n};\nfunction getDocument() {\n const doc = typeof document !== 'undefined' ? document : {};\n extend(doc, ssrDocument);\n return doc;\n}\n\nconst ssrWindow = {\n document: ssrDocument,\n navigator: {\n userAgent: '',\n },\n location: {\n hash: '',\n host: '',\n hostname: '',\n href: '',\n origin: '',\n pathname: '',\n protocol: '',\n search: '',\n },\n history: {\n replaceState() { },\n pushState() { },\n go() { },\n back() { },\n },\n CustomEvent: function CustomEvent() {\n return this;\n },\n addEventListener() { },\n removeEventListener() { },\n getComputedStyle() {\n return {\n getPropertyValue() {\n return '';\n },\n };\n },\n Image() { },\n Date() { },\n screen: {},\n setTimeout() { },\n clearTimeout() { },\n matchMedia() {\n return {};\n },\n requestAnimationFrame(callback) {\n if (typeof setTimeout === 'undefined') {\n callback();\n return null;\n }\n return setTimeout(callback, 0);\n },\n cancelAnimationFrame(id) {\n if (typeof setTimeout === 'undefined') {\n return;\n }\n clearTimeout(id);\n },\n};\nfunction getWindow() {\n const win = typeof window !== 'undefined' ? window : {};\n extend(win, ssrWindow);\n return win;\n}\n\nexport { extend, getDocument, getWindow, ssrDocument, ssrWindow };\n","import { getWindow } from 'ssr-window';\nexport default function getBreakpoint(breakpoints, base = 'window', containerEl) {\n if (!breakpoints || base === 'container' && !containerEl) return undefined;\n let breakpoint = false;\n const window = getWindow();\n const currentHeight = base === 'window' ? window.innerHeight : containerEl.clientHeight;\n const points = Object.keys(breakpoints).map(point => {\n if (typeof point === 'string' && point.indexOf('@') === 0) {\n const minRatio = parseFloat(point.substr(1));\n const value = currentHeight * minRatio;\n return {\n value,\n point\n };\n }\n\n return {\n value: point,\n point\n };\n });\n points.sort((a, b) => parseInt(a.value, 10) - parseInt(b.value, 10));\n\n for (let i = 0; i < points.length; i += 1) {\n const {\n point,\n value\n } = points[i];\n\n if (base === 'window') {\n if (window.matchMedia(`(min-width: ${value}px)`).matches) {\n breakpoint = point;\n }\n } else if (value <= containerEl.clientWidth) {\n breakpoint = point;\n }\n }\n\n return breakpoint || 'max';\n}","import setBreakpoint from './setBreakpoint.js';\nimport getBreakpoint from './getBreakpoint.js';\nexport default {\n setBreakpoint,\n getBreakpoint\n};","import { extend } from '../../shared/utils.js';\n\nconst isGridEnabled = (swiper, params) => {\n return swiper.grid && params.grid && params.grid.rows > 1;\n};\n\nexport default function setBreakpoint() {\n const swiper = this;\n const {\n activeIndex,\n initialized,\n loopedSlides = 0,\n params,\n $el\n } = swiper;\n const breakpoints = params.breakpoints;\n if (!breakpoints || breakpoints && Object.keys(breakpoints).length === 0) return; // Get breakpoint for window width and update parameters\n\n const breakpoint = swiper.getBreakpoint(breakpoints, swiper.params.breakpointsBase, swiper.el);\n if (!breakpoint || swiper.currentBreakpoint === breakpoint) return;\n const breakpointOnlyParams = breakpoint in breakpoints ? breakpoints[breakpoint] : undefined;\n const breakpointParams = breakpointOnlyParams || swiper.originalParams;\n const wasMultiRow = isGridEnabled(swiper, params);\n const isMultiRow = isGridEnabled(swiper, breakpointParams);\n const wasEnabled = params.enabled;\n\n if (wasMultiRow && !isMultiRow) {\n $el.removeClass(`${params.containerModifierClass}grid ${params.containerModifierClass}grid-column`);\n swiper.emitContainerClasses();\n } else if (!wasMultiRow && isMultiRow) {\n $el.addClass(`${params.containerModifierClass}grid`);\n\n if (breakpointParams.grid.fill && breakpointParams.grid.fill === 'column' || !breakpointParams.grid.fill && params.grid.fill === 'column') {\n $el.addClass(`${params.containerModifierClass}grid-column`);\n }\n\n swiper.emitContainerClasses();\n }\n\n const directionChanged = breakpointParams.direction && breakpointParams.direction !== params.direction;\n const needsReLoop = params.loop && (breakpointParams.slidesPerView !== params.slidesPerView || directionChanged);\n\n if (directionChanged && initialized) {\n swiper.changeDirection();\n }\n\n extend(swiper.params, breakpointParams);\n const isEnabled = swiper.params.enabled;\n Object.assign(swiper, {\n allowTouchMove: swiper.params.allowTouchMove,\n allowSlideNext: swiper.params.allowSlideNext,\n allowSlidePrev: swiper.params.allowSlidePrev\n });\n\n if (wasEnabled && !isEnabled) {\n swiper.disable();\n } else if (!wasEnabled && isEnabled) {\n swiper.enable();\n }\n\n swiper.currentBreakpoint = breakpoint;\n swiper.emit('_beforeBreakpoint', breakpointParams);\n\n if (needsReLoop && initialized) {\n swiper.loopDestroy();\n swiper.loopCreate();\n swiper.updateSlides();\n swiper.slideTo(activeIndex - loopedSlides + swiper.loopedSlides, 0, false);\n }\n\n swiper.emit('breakpoint', breakpointParams);\n}","function checkOverflow() {\n const swiper = this;\n const {\n isLocked: wasLocked,\n params\n } = swiper;\n const {\n slidesOffsetBefore\n } = params;\n\n if (slidesOffsetBefore) {\n const lastSlideIndex = swiper.slides.length - 1;\n const lastSlideRightEdge = swiper.slidesGrid[lastSlideIndex] + swiper.slidesSizesGrid[lastSlideIndex] + slidesOffsetBefore * 2;\n swiper.isLocked = swiper.size > lastSlideRightEdge;\n } else {\n swiper.isLocked = swiper.snapGrid.length === 1;\n }\n\n if (params.allowSlideNext === true) {\n swiper.allowSlideNext = !swiper.isLocked;\n }\n\n if (params.allowSlidePrev === true) {\n swiper.allowSlidePrev = !swiper.isLocked;\n }\n\n if (wasLocked && wasLocked !== swiper.isLocked) {\n swiper.isEnd = false;\n }\n\n if (wasLocked !== swiper.isLocked) {\n swiper.emit(swiper.isLocked ? 'lock' : 'unlock');\n }\n}\n\nexport default {\n checkOverflow\n};","function prepareClasses(entries, prefix) {\n const resultClasses = [];\n entries.forEach(item => {\n if (typeof item === 'object') {\n Object.keys(item).forEach(classNames => {\n if (item[classNames]) {\n resultClasses.push(prefix + classNames);\n }\n });\n } else if (typeof item === 'string') {\n resultClasses.push(prefix + item);\n }\n });\n return resultClasses;\n}\n\nexport default function addClasses() {\n const swiper = this;\n const {\n classNames,\n params,\n rtl,\n $el,\n device,\n support\n } = swiper; // prettier-ignore\n\n const suffixes = prepareClasses(['initialized', params.direction, {\n 'pointer-events': !support.touch\n }, {\n 'free-mode': swiper.params.freeMode && params.freeMode.enabled\n }, {\n 'autoheight': params.autoHeight\n }, {\n 'rtl': rtl\n }, {\n 'grid': params.grid && params.grid.rows > 1\n }, {\n 'grid-column': params.grid && params.grid.rows > 1 && params.grid.fill === 'column'\n }, {\n 'android': device.android\n }, {\n 'ios': device.ios\n }, {\n 'css-mode': params.cssMode\n }, {\n 'centered': params.cssMode && params.centeredSlides\n }], params.containerModifierClass);\n classNames.push(...suffixes);\n $el.addClass([...classNames].join(' '));\n swiper.emitContainerClasses();\n}","import addClasses from './addClasses.js';\nimport removeClasses from './removeClasses.js';\nexport default {\n addClasses,\n removeClasses\n};","export default function removeClasses() {\n const swiper = this;\n const {\n $el,\n classNames\n } = swiper;\n $el.removeClass(classNames.join(' '));\n swiper.emitContainerClasses();\n}","/* eslint no-param-reassign: \"off\" */\nimport { getDocument } from 'ssr-window';\nimport $ from '../shared/dom.js';\nimport { extend, now, deleteProps } from '../shared/utils.js';\nimport { getSupport } from '../shared/get-support.js';\nimport { getDevice } from '../shared/get-device.js';\nimport { getBrowser } from '../shared/get-browser.js';\nimport Resize from './modules/resize/resize.js';\nimport Observer from './modules/observer/observer.js';\nimport eventsEmitter from './events-emitter.js';\nimport update from './update/index.js';\nimport translate from './translate/index.js';\nimport transition from './transition/index.js';\nimport slide from './slide/index.js';\nimport loop from './loop/index.js';\nimport grabCursor from './grab-cursor/index.js';\nimport events from './events/index.js';\nimport breakpoints from './breakpoints/index.js';\nimport classes from './classes/index.js';\nimport images from './images/index.js';\nimport checkOverflow from './check-overflow/index.js';\nimport defaults from './defaults.js';\nimport moduleExtendParams from './moduleExtendParams.js';\nconst prototypes = {\n eventsEmitter,\n update,\n translate,\n transition,\n slide,\n loop,\n grabCursor,\n events,\n breakpoints,\n checkOverflow,\n classes,\n images\n};\nconst extendedDefaults = {};\n\nclass Swiper {\n constructor(...args) {\n let el;\n let params;\n\n if (args.length === 1 && args[0].constructor && Object.prototype.toString.call(args[0]).slice(8, -1) === 'Object') {\n params = args[0];\n } else {\n [el, params] = args;\n }\n\n if (!params) params = {};\n params = extend({}, params);\n if (el && !params.el) params.el = el;\n\n if (params.el && $(params.el).length > 1) {\n const swipers = [];\n $(params.el).each(containerEl => {\n const newParams = extend({}, params, {\n el: containerEl\n });\n swipers.push(new Swiper(newParams));\n });\n return swipers;\n } // Swiper Instance\n\n\n const swiper = this;\n swiper.__swiper__ = true;\n swiper.support = getSupport();\n swiper.device = getDevice({\n userAgent: params.userAgent\n });\n swiper.browser = getBrowser();\n swiper.eventsListeners = {};\n swiper.eventsAnyListeners = [];\n swiper.modules = [...swiper.__modules__];\n\n if (params.modules && Array.isArray(params.modules)) {\n swiper.modules.push(...params.modules);\n }\n\n const allModulesParams = {};\n swiper.modules.forEach(mod => {\n mod({\n swiper,\n extendParams: moduleExtendParams(params, allModulesParams),\n on: swiper.on.bind(swiper),\n once: swiper.once.bind(swiper),\n off: swiper.off.bind(swiper),\n emit: swiper.emit.bind(swiper)\n });\n }); // Extend defaults with modules params\n\n const swiperParams = extend({}, defaults, allModulesParams); // Extend defaults with passed params\n\n swiper.params = extend({}, swiperParams, extendedDefaults, params);\n swiper.originalParams = extend({}, swiper.params);\n swiper.passedParams = extend({}, params); // add event listeners\n\n if (swiper.params && swiper.params.on) {\n Object.keys(swiper.params.on).forEach(eventName => {\n swiper.on(eventName, swiper.params.on[eventName]);\n });\n }\n\n if (swiper.params && swiper.params.onAny) {\n swiper.onAny(swiper.params.onAny);\n } // Save Dom lib\n\n\n swiper.$ = $; // Extend Swiper\n\n Object.assign(swiper, {\n enabled: swiper.params.enabled,\n el,\n // Classes\n classNames: [],\n // Slides\n slides: $(),\n slidesGrid: [],\n snapGrid: [],\n slidesSizesGrid: [],\n\n // isDirection\n isHorizontal() {\n return swiper.params.direction === 'horizontal';\n },\n\n isVertical() {\n return swiper.params.direction === 'vertical';\n },\n\n // Indexes\n activeIndex: 0,\n realIndex: 0,\n //\n isBeginning: true,\n isEnd: false,\n // Props\n translate: 0,\n previousTranslate: 0,\n progress: 0,\n velocity: 0,\n animating: false,\n // Locks\n allowSlideNext: swiper.params.allowSlideNext,\n allowSlidePrev: swiper.params.allowSlidePrev,\n // Touch Events\n touchEvents: function touchEvents() {\n const touch = ['touchstart', 'touchmove', 'touchend', 'touchcancel'];\n const desktop = ['pointerdown', 'pointermove', 'pointerup'];\n swiper.touchEventsTouch = {\n start: touch[0],\n move: touch[1],\n end: touch[2],\n cancel: touch[3]\n };\n swiper.touchEventsDesktop = {\n start: desktop[0],\n move: desktop[1],\n end: desktop[2]\n };\n return swiper.support.touch || !swiper.params.simulateTouch ? swiper.touchEventsTouch : swiper.touchEventsDesktop;\n }(),\n touchEventsData: {\n isTouched: undefined,\n isMoved: undefined,\n allowTouchCallbacks: undefined,\n touchStartTime: undefined,\n isScrolling: undefined,\n currentTranslate: undefined,\n startTranslate: undefined,\n allowThresholdMove: undefined,\n // Form elements to match\n focusableElements: swiper.params.focusableElements,\n // Last click time\n lastClickTime: now(),\n clickTimeout: undefined,\n // Velocities\n velocities: [],\n allowMomentumBounce: undefined,\n isTouchEvent: undefined,\n startMoving: undefined\n },\n // Clicks\n allowClick: true,\n // Touches\n allowTouchMove: swiper.params.allowTouchMove,\n touches: {\n startX: 0,\n startY: 0,\n currentX: 0,\n currentY: 0,\n diff: 0\n },\n // Images\n imagesToLoad: [],\n imagesLoaded: 0\n });\n swiper.emit('_swiper'); // Init\n\n if (swiper.params.init) {\n swiper.init();\n } // Return app instance\n\n\n return swiper;\n }\n\n enable() {\n const swiper = this;\n if (swiper.enabled) return;\n swiper.enabled = true;\n\n if (swiper.params.grabCursor) {\n swiper.setGrabCursor();\n }\n\n swiper.emit('enable');\n }\n\n disable() {\n const swiper = this;\n if (!swiper.enabled) return;\n swiper.enabled = false;\n\n if (swiper.params.grabCursor) {\n swiper.unsetGrabCursor();\n }\n\n swiper.emit('disable');\n }\n\n setProgress(progress, speed) {\n const swiper = this;\n progress = Math.min(Math.max(progress, 0), 1);\n const min = swiper.minTranslate();\n const max = swiper.maxTranslate();\n const current = (max - min) * progress + min;\n swiper.translateTo(current, typeof speed === 'undefined' ? 0 : speed);\n swiper.updateActiveIndex();\n swiper.updateSlidesClasses();\n }\n\n emitContainerClasses() {\n const swiper = this;\n if (!swiper.params._emitClasses || !swiper.el) return;\n const cls = swiper.el.className.split(' ').filter(className => {\n return className.indexOf('swiper') === 0 || className.indexOf(swiper.params.containerModifierClass) === 0;\n });\n swiper.emit('_containerClasses', cls.join(' '));\n }\n\n getSlideClasses(slideEl) {\n const swiper = this;\n return slideEl.className.split(' ').filter(className => {\n return className.indexOf('swiper-slide') === 0 || className.indexOf(swiper.params.slideClass) === 0;\n }).join(' ');\n }\n\n emitSlidesClasses() {\n const swiper = this;\n if (!swiper.params._emitClasses || !swiper.el) return;\n const updates = [];\n swiper.slides.each(slideEl => {\n const classNames = swiper.getSlideClasses(slideEl);\n updates.push({\n slideEl,\n classNames\n });\n swiper.emit('_slideClass', slideEl, classNames);\n });\n swiper.emit('_slideClasses', updates);\n }\n\n slidesPerViewDynamic(view = 'current', exact = false) {\n const swiper = this;\n const {\n params,\n slides,\n slidesGrid,\n slidesSizesGrid,\n size: swiperSize,\n activeIndex\n } = swiper;\n let spv = 1;\n\n if (params.centeredSlides) {\n let slideSize = slides[activeIndex].swiperSlideSize;\n let breakLoop;\n\n for (let i = activeIndex + 1; i < slides.length; i += 1) {\n if (slides[i] && !breakLoop) {\n slideSize += slides[i].swiperSlideSize;\n spv += 1;\n if (slideSize > swiperSize) breakLoop = true;\n }\n }\n\n for (let i = activeIndex - 1; i >= 0; i -= 1) {\n if (slides[i] && !breakLoop) {\n slideSize += slides[i].swiperSlideSize;\n spv += 1;\n if (slideSize > swiperSize) breakLoop = true;\n }\n }\n } else {\n // eslint-disable-next-line\n if (view === 'current') {\n for (let i = activeIndex + 1; i < slides.length; i += 1) {\n const slideInView = exact ? slidesGrid[i] + slidesSizesGrid[i] - slidesGrid[activeIndex] < swiperSize : slidesGrid[i] - slidesGrid[activeIndex] < swiperSize;\n\n if (slideInView) {\n spv += 1;\n }\n }\n } else {\n // previous\n for (let i = activeIndex - 1; i >= 0; i -= 1) {\n const slideInView = slidesGrid[activeIndex] - slidesGrid[i] < swiperSize;\n\n if (slideInView) {\n spv += 1;\n }\n }\n }\n }\n\n return spv;\n }\n\n update() {\n const swiper = this;\n if (!swiper || swiper.destroyed) return;\n const {\n snapGrid,\n params\n } = swiper; // Breakpoints\n\n if (params.breakpoints) {\n swiper.setBreakpoint();\n }\n\n swiper.updateSize();\n swiper.updateSlides();\n swiper.updateProgress();\n swiper.updateSlidesClasses();\n\n function setTranslate() {\n const translateValue = swiper.rtlTranslate ? swiper.translate * -1 : swiper.translate;\n const newTranslate = Math.min(Math.max(translateValue, swiper.maxTranslate()), swiper.minTranslate());\n swiper.setTranslate(newTranslate);\n swiper.updateActiveIndex();\n swiper.updateSlidesClasses();\n }\n\n let translated;\n\n if (swiper.params.freeMode && swiper.params.freeMode.enabled) {\n setTranslate();\n\n if (swiper.params.autoHeight) {\n swiper.updateAutoHeight();\n }\n } else {\n if ((swiper.params.slidesPerView === 'auto' || swiper.params.slidesPerView > 1) && swiper.isEnd && !swiper.params.centeredSlides) {\n translated = swiper.slideTo(swiper.slides.length - 1, 0, false, true);\n } else {\n translated = swiper.slideTo(swiper.activeIndex, 0, false, true);\n }\n\n if (!translated) {\n setTranslate();\n }\n }\n\n if (params.watchOverflow && snapGrid !== swiper.snapGrid) {\n swiper.checkOverflow();\n }\n\n swiper.emit('update');\n }\n\n changeDirection(newDirection, needUpdate = true) {\n const swiper = this;\n const currentDirection = swiper.params.direction;\n\n if (!newDirection) {\n // eslint-disable-next-line\n newDirection = currentDirection === 'horizontal' ? 'vertical' : 'horizontal';\n }\n\n if (newDirection === currentDirection || newDirection !== 'horizontal' && newDirection !== 'vertical') {\n return swiper;\n }\n\n swiper.$el.removeClass(`${swiper.params.containerModifierClass}${currentDirection}`).addClass(`${swiper.params.containerModifierClass}${newDirection}`);\n swiper.emitContainerClasses();\n swiper.params.direction = newDirection;\n swiper.slides.each(slideEl => {\n if (newDirection === 'vertical') {\n slideEl.style.width = '';\n } else {\n slideEl.style.height = '';\n }\n });\n swiper.emit('changeDirection');\n if (needUpdate) swiper.update();\n return swiper;\n }\n\n mount(el) {\n const swiper = this;\n if (swiper.mounted) return true; // Find el\n\n const $el = $(el || swiper.params.el);\n el = $el[0];\n\n if (!el) {\n return false;\n }\n\n el.swiper = swiper;\n\n const getWrapperSelector = () => {\n return `.${(swiper.params.wrapperClass || '').trim().split(' ').join('.')}`;\n };\n\n const getWrapper = () => {\n if (el && el.shadowRoot && el.shadowRoot.querySelector) {\n const res = $(el.shadowRoot.querySelector(getWrapperSelector())); // Children needs to return slot items\n\n res.children = options => $el.children(options);\n\n return res;\n }\n\n return $el.children(getWrapperSelector());\n }; // Find Wrapper\n\n\n let $wrapperEl = getWrapper();\n\n if ($wrapperEl.length === 0 && swiper.params.createElements) {\n const document = getDocument();\n const wrapper = document.createElement('div');\n $wrapperEl = $(wrapper);\n wrapper.className = swiper.params.wrapperClass;\n $el.append(wrapper);\n $el.children(`.${swiper.params.slideClass}`).each(slideEl => {\n $wrapperEl.append(slideEl);\n });\n }\n\n Object.assign(swiper, {\n $el,\n el,\n $wrapperEl,\n wrapperEl: $wrapperEl[0],\n mounted: true,\n // RTL\n rtl: el.dir.toLowerCase() === 'rtl' || $el.css('direction') === 'rtl',\n rtlTranslate: swiper.params.direction === 'horizontal' && (el.dir.toLowerCase() === 'rtl' || $el.css('direction') === 'rtl'),\n wrongRTL: $wrapperEl.css('display') === '-webkit-box'\n });\n return true;\n }\n\n init(el) {\n const swiper = this;\n if (swiper.initialized) return swiper;\n const mounted = swiper.mount(el);\n if (mounted === false) return swiper;\n swiper.emit('beforeInit'); // Set breakpoint\n\n if (swiper.params.breakpoints) {\n swiper.setBreakpoint();\n } // Add Classes\n\n\n swiper.addClasses(); // Create loop\n\n if (swiper.params.loop) {\n swiper.loopCreate();\n } // Update size\n\n\n swiper.updateSize(); // Update slides\n\n swiper.updateSlides();\n\n if (swiper.params.watchOverflow) {\n swiper.checkOverflow();\n } // Set Grab Cursor\n\n\n if (swiper.params.grabCursor && swiper.enabled) {\n swiper.setGrabCursor();\n }\n\n if (swiper.params.preloadImages) {\n swiper.preloadImages();\n } // Slide To Initial Slide\n\n\n if (swiper.params.loop) {\n swiper.slideTo(swiper.params.initialSlide + swiper.loopedSlides, 0, swiper.params.runCallbacksOnInit, false, true);\n } else {\n swiper.slideTo(swiper.params.initialSlide, 0, swiper.params.runCallbacksOnInit, false, true);\n } // Attach events\n\n\n swiper.attachEvents(); // Init Flag\n\n swiper.initialized = true; // Emit\n\n swiper.emit('init');\n swiper.emit('afterInit');\n return swiper;\n }\n\n destroy(deleteInstance = true, cleanStyles = true) {\n const swiper = this;\n const {\n params,\n $el,\n $wrapperEl,\n slides\n } = swiper;\n\n if (typeof swiper.params === 'undefined' || swiper.destroyed) {\n return null;\n }\n\n swiper.emit('beforeDestroy'); // Init Flag\n\n swiper.initialized = false; // Detach events\n\n swiper.detachEvents(); // Destroy loop\n\n if (params.loop) {\n swiper.loopDestroy();\n } // Cleanup styles\n\n\n if (cleanStyles) {\n swiper.removeClasses();\n $el.removeAttr('style');\n $wrapperEl.removeAttr('style');\n\n if (slides && slides.length) {\n slides.removeClass([params.slideVisibleClass, params.slideActiveClass, params.slideNextClass, params.slidePrevClass].join(' ')).removeAttr('style').removeAttr('data-swiper-slide-index');\n }\n }\n\n swiper.emit('destroy'); // Detach emitter events\n\n Object.keys(swiper.eventsListeners).forEach(eventName => {\n swiper.off(eventName);\n });\n\n if (deleteInstance !== false) {\n swiper.$el[0].swiper = null;\n deleteProps(swiper);\n }\n\n swiper.destroyed = true;\n return null;\n }\n\n static extendDefaults(newDefaults) {\n extend(extendedDefaults, newDefaults);\n }\n\n static get extendedDefaults() {\n return extendedDefaults;\n }\n\n static get defaults() {\n return defaults;\n }\n\n static installModule(mod) {\n if (!Swiper.prototype.__modules__) Swiper.prototype.__modules__ = [];\n const modules = Swiper.prototype.__modules__;\n\n if (typeof mod === 'function' && modules.indexOf(mod) < 0) {\n modules.push(mod);\n }\n }\n\n static use(module) {\n if (Array.isArray(module)) {\n module.forEach(m => Swiper.installModule(m));\n return Swiper;\n }\n\n Swiper.installModule(module);\n return Swiper;\n }\n\n}\n\nObject.keys(prototypes).forEach(prototypeGroup => {\n Object.keys(prototypes[prototypeGroup]).forEach(protoMethod => {\n Swiper.prototype[protoMethod] = prototypes[prototypeGroup][protoMethod];\n });\n});\nSwiper.use([Resize, Observer]);\nexport default Swiper;","export default {\n init: true,\n direction: 'horizontal',\n touchEventsTarget: 'wrapper',\n initialSlide: 0,\n speed: 300,\n cssMode: false,\n updateOnWindowResize: true,\n resizeObserver: true,\n nested: false,\n createElements: false,\n enabled: true,\n focusableElements: 'input, select, option, textarea, button, video, label',\n // Overrides\n width: null,\n height: null,\n //\n preventInteractionOnTransition: false,\n // ssr\n userAgent: null,\n url: null,\n // To support iOS's swipe-to-go-back gesture (when being used in-app).\n edgeSwipeDetection: false,\n edgeSwipeThreshold: 20,\n // Autoheight\n autoHeight: false,\n // Set wrapper width\n setWrapperSize: false,\n // Virtual Translate\n virtualTranslate: false,\n // Effects\n effect: 'slide',\n // 'slide' or 'fade' or 'cube' or 'coverflow' or 'flip'\n // Breakpoints\n breakpoints: undefined,\n breakpointsBase: 'window',\n // Slides grid\n spaceBetween: 0,\n slidesPerView: 1,\n slidesPerGroup: 1,\n slidesPerGroupSkip: 0,\n slidesPerGroupAuto: false,\n centeredSlides: false,\n centeredSlidesBounds: false,\n slidesOffsetBefore: 0,\n // in px\n slidesOffsetAfter: 0,\n // in px\n normalizeSlideIndex: true,\n centerInsufficientSlides: false,\n // Disable swiper and hide navigation when container not overflow\n watchOverflow: true,\n // Round length\n roundLengths: false,\n // Touches\n touchRatio: 1,\n touchAngle: 45,\n simulateTouch: true,\n shortSwipes: true,\n longSwipes: true,\n longSwipesRatio: 0.5,\n longSwipesMs: 300,\n followFinger: true,\n allowTouchMove: true,\n threshold: 0,\n touchMoveStopPropagation: false,\n touchStartPreventDefault: true,\n touchStartForcePreventDefault: false,\n touchReleaseOnEdges: false,\n // Unique Navigation Elements\n uniqueNavElements: true,\n // Resistance\n resistance: true,\n resistanceRatio: 0.85,\n // Progress\n watchSlidesProgress: false,\n // Cursor\n grabCursor: false,\n // Clicks\n preventClicks: true,\n preventClicksPropagation: true,\n slideToClickedSlide: false,\n // Images\n preloadImages: true,\n updateOnImagesReady: true,\n // loop\n loop: false,\n loopAdditionalSlides: 0,\n loopedSlides: null,\n loopFillGroupWithBlank: false,\n loopPreventsSlide: true,\n // rewind\n rewind: false,\n // Swiping/no swiping\n allowSlidePrev: true,\n allowSlideNext: true,\n swipeHandler: null,\n // '.swipe-handler',\n noSwiping: true,\n noSwipingClass: 'swiper-no-swiping',\n noSwipingSelector: null,\n // Passive Listeners\n passiveListeners: true,\n // NS\n containerModifierClass: 'swiper-',\n // NEW\n slideClass: 'swiper-slide',\n slideBlankClass: 'swiper-slide-invisible-blank',\n slideActiveClass: 'swiper-slide-active',\n slideDuplicateActiveClass: 'swiper-slide-duplicate-active',\n slideVisibleClass: 'swiper-slide-visible',\n slideDuplicateClass: 'swiper-slide-duplicate',\n slideNextClass: 'swiper-slide-next',\n slideDuplicateNextClass: 'swiper-slide-duplicate-next',\n slidePrevClass: 'swiper-slide-prev',\n slideDuplicatePrevClass: 'swiper-slide-duplicate-prev',\n wrapperClass: 'swiper-wrapper',\n // Callbacks\n runCallbacksOnInit: true,\n // Internals\n _emitClasses: false\n};","/* eslint-disable no-underscore-dangle */\nexport default {\n on(events, handler, priority) {\n const self = this;\n if (typeof handler !== 'function') return self;\n const method = priority ? 'unshift' : 'push';\n events.split(' ').forEach(event => {\n if (!self.eventsListeners[event]) self.eventsListeners[event] = [];\n self.eventsListeners[event][method](handler);\n });\n return self;\n },\n\n once(events, handler, priority) {\n const self = this;\n if (typeof handler !== 'function') return self;\n\n function onceHandler(...args) {\n self.off(events, onceHandler);\n\n if (onceHandler.__emitterProxy) {\n delete onceHandler.__emitterProxy;\n }\n\n handler.apply(self, args);\n }\n\n onceHandler.__emitterProxy = handler;\n return self.on(events, onceHandler, priority);\n },\n\n onAny(handler, priority) {\n const self = this;\n if (typeof handler !== 'function') return self;\n const method = priority ? 'unshift' : 'push';\n\n if (self.eventsAnyListeners.indexOf(handler) < 0) {\n self.eventsAnyListeners[method](handler);\n }\n\n return self;\n },\n\n offAny(handler) {\n const self = this;\n if (!self.eventsAnyListeners) return self;\n const index = self.eventsAnyListeners.indexOf(handler);\n\n if (index >= 0) {\n self.eventsAnyListeners.splice(index, 1);\n }\n\n return self;\n },\n\n off(events, handler) {\n const self = this;\n if (!self.eventsListeners) return self;\n events.split(' ').forEach(event => {\n if (typeof handler === 'undefined') {\n self.eventsListeners[event] = [];\n } else if (self.eventsListeners[event]) {\n self.eventsListeners[event].forEach((eventHandler, index) => {\n if (eventHandler === handler || eventHandler.__emitterProxy && eventHandler.__emitterProxy === handler) {\n self.eventsListeners[event].splice(index, 1);\n }\n });\n }\n });\n return self;\n },\n\n emit(...args) {\n const self = this;\n if (!self.eventsListeners) return self;\n let events;\n let data;\n let context;\n\n if (typeof args[0] === 'string' || Array.isArray(args[0])) {\n events = args[0];\n data = args.slice(1, args.length);\n context = self;\n } else {\n events = args[0].events;\n data = args[0].data;\n context = args[0].context || self;\n }\n\n data.unshift(context);\n const eventsArray = Array.isArray(events) ? events : events.split(' ');\n eventsArray.forEach(event => {\n if (self.eventsAnyListeners && self.eventsAnyListeners.length) {\n self.eventsAnyListeners.forEach(eventHandler => {\n eventHandler.apply(context, [event, ...data]);\n });\n }\n\n if (self.eventsListeners && self.eventsListeners[event]) {\n self.eventsListeners[event].forEach(eventHandler => {\n eventHandler.apply(context, data);\n });\n }\n });\n return self;\n }\n\n};","import { getDocument } from 'ssr-window';\nimport onTouchStart from './onTouchStart.js';\nimport onTouchMove from './onTouchMove.js';\nimport onTouchEnd from './onTouchEnd.js';\nimport onResize from './onResize.js';\nimport onClick from './onClick.js';\nimport onScroll from './onScroll.js';\nlet dummyEventAttached = false;\n\nfunction dummyEventListener() {}\n\nconst events = (swiper, method) => {\n const document = getDocument();\n const {\n params,\n touchEvents,\n el,\n wrapperEl,\n device,\n support\n } = swiper;\n const capture = !!params.nested;\n const domMethod = method === 'on' ? 'addEventListener' : 'removeEventListener';\n const swiperMethod = method; // Touch Events\n\n if (!support.touch) {\n el[domMethod](touchEvents.start, swiper.onTouchStart, false);\n document[domMethod](touchEvents.move, swiper.onTouchMove, capture);\n document[domMethod](touchEvents.end, swiper.onTouchEnd, false);\n } else {\n const passiveListener = touchEvents.start === 'touchstart' && support.passiveListener && params.passiveListeners ? {\n passive: true,\n capture: false\n } : false;\n el[domMethod](touchEvents.start, swiper.onTouchStart, passiveListener);\n el[domMethod](touchEvents.move, swiper.onTouchMove, support.passiveListener ? {\n passive: false,\n capture\n } : capture);\n el[domMethod](touchEvents.end, swiper.onTouchEnd, passiveListener);\n\n if (touchEvents.cancel) {\n el[domMethod](touchEvents.cancel, swiper.onTouchEnd, passiveListener);\n }\n } // Prevent Links Clicks\n\n\n if (params.preventClicks || params.preventClicksPropagation) {\n el[domMethod]('click', swiper.onClick, true);\n }\n\n if (params.cssMode) {\n wrapperEl[domMethod]('scroll', swiper.onScroll);\n } // Resize handler\n\n\n if (params.updateOnWindowResize) {\n swiper[swiperMethod](device.ios || device.android ? 'resize orientationchange observerUpdate' : 'resize observerUpdate', onResize, true);\n } else {\n swiper[swiperMethod]('observerUpdate', onResize, true);\n }\n};\n\nfunction attachEvents() {\n const swiper = this;\n const document = getDocument();\n const {\n params,\n support\n } = swiper;\n swiper.onTouchStart = onTouchStart.bind(swiper);\n swiper.onTouchMove = onTouchMove.bind(swiper);\n swiper.onTouchEnd = onTouchEnd.bind(swiper);\n\n if (params.cssMode) {\n swiper.onScroll = onScroll.bind(swiper);\n }\n\n swiper.onClick = onClick.bind(swiper);\n\n if (support.touch && !dummyEventAttached) {\n document.addEventListener('touchstart', dummyEventListener);\n dummyEventAttached = true;\n }\n\n events(swiper, 'on');\n}\n\nfunction detachEvents() {\n const swiper = this;\n events(swiper, 'off');\n}\n\nexport default {\n attachEvents,\n detachEvents\n};","export default function onClick(e) {\n const swiper = this;\n if (!swiper.enabled) return;\n\n if (!swiper.allowClick) {\n if (swiper.params.preventClicks) e.preventDefault();\n\n if (swiper.params.preventClicksPropagation && swiper.animating) {\n e.stopPropagation();\n e.stopImmediatePropagation();\n }\n }\n}","export default function onResize() {\n const swiper = this;\n const {\n params,\n el\n } = swiper;\n if (el && el.offsetWidth === 0) return; // Breakpoints\n\n if (params.breakpoints) {\n swiper.setBreakpoint();\n } // Save locks\n\n\n const {\n allowSlideNext,\n allowSlidePrev,\n snapGrid\n } = swiper; // Disable locks on resize\n\n swiper.allowSlideNext = true;\n swiper.allowSlidePrev = true;\n swiper.updateSize();\n swiper.updateSlides();\n swiper.updateSlidesClasses();\n\n if ((params.slidesPerView === 'auto' || params.slidesPerView > 1) && swiper.isEnd && !swiper.isBeginning && !swiper.params.centeredSlides) {\n swiper.slideTo(swiper.slides.length - 1, 0, false, true);\n } else {\n swiper.slideTo(swiper.activeIndex, 0, false, true);\n }\n\n if (swiper.autoplay && swiper.autoplay.running && swiper.autoplay.paused) {\n swiper.autoplay.run();\n } // Return locks after resize\n\n\n swiper.allowSlidePrev = allowSlidePrev;\n swiper.allowSlideNext = allowSlideNext;\n\n if (swiper.params.watchOverflow && snapGrid !== swiper.snapGrid) {\n swiper.checkOverflow();\n }\n}","export default function onScroll() {\n const swiper = this;\n const {\n wrapperEl,\n rtlTranslate,\n enabled\n } = swiper;\n if (!enabled) return;\n swiper.previousTranslate = swiper.translate;\n\n if (swiper.isHorizontal()) {\n swiper.translate = -wrapperEl.scrollLeft;\n } else {\n swiper.translate = -wrapperEl.scrollTop;\n } // eslint-disable-next-line\n\n\n if (swiper.translate === -0) swiper.translate = 0;\n swiper.updateActiveIndex();\n swiper.updateSlidesClasses();\n let newProgress;\n const translatesDiff = swiper.maxTranslate() - swiper.minTranslate();\n\n if (translatesDiff === 0) {\n newProgress = 0;\n } else {\n newProgress = (swiper.translate - swiper.minTranslate()) / translatesDiff;\n }\n\n if (newProgress !== swiper.progress) {\n swiper.updateProgress(rtlTranslate ? -swiper.translate : swiper.translate);\n }\n\n swiper.emit('setTranslate', swiper.translate, false);\n}","import { now, nextTick } from '../../shared/utils.js';\nexport default function onTouchEnd(event) {\n const swiper = this;\n const data = swiper.touchEventsData;\n const {\n params,\n touches,\n rtlTranslate: rtl,\n slidesGrid,\n enabled\n } = swiper;\n if (!enabled) return;\n let e = event;\n if (e.originalEvent) e = e.originalEvent;\n\n if (data.allowTouchCallbacks) {\n swiper.emit('touchEnd', e);\n }\n\n data.allowTouchCallbacks = false;\n\n if (!data.isTouched) {\n if (data.isMoved && params.grabCursor) {\n swiper.setGrabCursor(false);\n }\n\n data.isMoved = false;\n data.startMoving = false;\n return;\n } // Return Grab Cursor\n\n\n if (params.grabCursor && data.isMoved && data.isTouched && (swiper.allowSlideNext === true || swiper.allowSlidePrev === true)) {\n swiper.setGrabCursor(false);\n } // Time diff\n\n\n const touchEndTime = now();\n const timeDiff = touchEndTime - data.touchStartTime; // Tap, doubleTap, Click\n\n if (swiper.allowClick) {\n const pathTree = e.path || e.composedPath && e.composedPath();\n swiper.updateClickedSlide(pathTree && pathTree[0] || e.target);\n swiper.emit('tap click', e);\n\n if (timeDiff < 300 && touchEndTime - data.lastClickTime < 300) {\n swiper.emit('doubleTap doubleClick', e);\n }\n }\n\n data.lastClickTime = now();\n nextTick(() => {\n if (!swiper.destroyed) swiper.allowClick = true;\n });\n\n if (!data.isTouched || !data.isMoved || !swiper.swipeDirection || touches.diff === 0 || data.currentTranslate === data.startTranslate) {\n data.isTouched = false;\n data.isMoved = false;\n data.startMoving = false;\n return;\n }\n\n data.isTouched = false;\n data.isMoved = false;\n data.startMoving = false;\n let currentPos;\n\n if (params.followFinger) {\n currentPos = rtl ? swiper.translate : -swiper.translate;\n } else {\n currentPos = -data.currentTranslate;\n }\n\n if (params.cssMode) {\n return;\n }\n\n if (swiper.params.freeMode && params.freeMode.enabled) {\n swiper.freeMode.onTouchEnd({\n currentPos\n });\n return;\n } // Find current slide\n\n\n let stopIndex = 0;\n let groupSize = swiper.slidesSizesGrid[0];\n\n for (let i = 0; i < slidesGrid.length; i += i < params.slidesPerGroupSkip ? 1 : params.slidesPerGroup) {\n const increment = i < params.slidesPerGroupSkip - 1 ? 1 : params.slidesPerGroup;\n\n if (typeof slidesGrid[i + increment] !== 'undefined') {\n if (currentPos >= slidesGrid[i] && currentPos < slidesGrid[i + increment]) {\n stopIndex = i;\n groupSize = slidesGrid[i + increment] - slidesGrid[i];\n }\n } else if (currentPos >= slidesGrid[i]) {\n stopIndex = i;\n groupSize = slidesGrid[slidesGrid.length - 1] - slidesGrid[slidesGrid.length - 2];\n }\n } // Find current slide size\n\n\n const ratio = (currentPos - slidesGrid[stopIndex]) / groupSize;\n const increment = stopIndex < params.slidesPerGroupSkip - 1 ? 1 : params.slidesPerGroup;\n\n if (timeDiff > params.longSwipesMs) {\n // Long touches\n if (!params.longSwipes) {\n swiper.slideTo(swiper.activeIndex);\n return;\n }\n\n if (swiper.swipeDirection === 'next') {\n if (ratio >= params.longSwipesRatio) swiper.slideTo(stopIndex + increment);else swiper.slideTo(stopIndex);\n }\n\n if (swiper.swipeDirection === 'prev') {\n if (ratio > 1 - params.longSwipesRatio) swiper.slideTo(stopIndex + increment);else swiper.slideTo(stopIndex);\n }\n } else {\n // Short swipes\n if (!params.shortSwipes) {\n swiper.slideTo(swiper.activeIndex);\n return;\n }\n\n const isNavButtonTarget = swiper.navigation && (e.target === swiper.navigation.nextEl || e.target === swiper.navigation.prevEl);\n\n if (!isNavButtonTarget) {\n if (swiper.swipeDirection === 'next') {\n swiper.slideTo(stopIndex + increment);\n }\n\n if (swiper.swipeDirection === 'prev') {\n swiper.slideTo(stopIndex);\n }\n } else if (e.target === swiper.navigation.nextEl) {\n swiper.slideTo(stopIndex + increment);\n } else {\n swiper.slideTo(stopIndex);\n }\n }\n}","import { getDocument } from 'ssr-window';\nimport $ from '../../shared/dom.js';\nimport { now } from '../../shared/utils.js';\nexport default function onTouchMove(event) {\n const document = getDocument();\n const swiper = this;\n const data = swiper.touchEventsData;\n const {\n params,\n touches,\n rtlTranslate: rtl,\n enabled\n } = swiper;\n if (!enabled) return;\n let e = event;\n if (e.originalEvent) e = e.originalEvent;\n\n if (!data.isTouched) {\n if (data.startMoving && data.isScrolling) {\n swiper.emit('touchMoveOpposite', e);\n }\n\n return;\n }\n\n if (data.isTouchEvent && e.type !== 'touchmove') return;\n const targetTouch = e.type === 'touchmove' && e.targetTouches && (e.targetTouches[0] || e.changedTouches[0]);\n const pageX = e.type === 'touchmove' ? targetTouch.pageX : e.pageX;\n const pageY = e.type === 'touchmove' ? targetTouch.pageY : e.pageY;\n\n if (e.preventedByNestedSwiper) {\n touches.startX = pageX;\n touches.startY = pageY;\n return;\n }\n\n if (!swiper.allowTouchMove) {\n // isMoved = true;\n swiper.allowClick = false;\n\n if (data.isTouched) {\n Object.assign(touches, {\n startX: pageX,\n startY: pageY,\n currentX: pageX,\n currentY: pageY\n });\n data.touchStartTime = now();\n }\n\n return;\n }\n\n if (data.isTouchEvent && params.touchReleaseOnEdges && !params.loop) {\n if (swiper.isVertical()) {\n // Vertical\n if (pageY < touches.startY && swiper.translate <= swiper.maxTranslate() || pageY > touches.startY && swiper.translate >= swiper.minTranslate()) {\n data.isTouched = false;\n data.isMoved = false;\n return;\n }\n } else if (pageX < touches.startX && swiper.translate <= swiper.maxTranslate() || pageX > touches.startX && swiper.translate >= swiper.minTranslate()) {\n return;\n }\n }\n\n if (data.isTouchEvent && document.activeElement) {\n if (e.target === document.activeElement && $(e.target).is(data.focusableElements)) {\n data.isMoved = true;\n swiper.allowClick = false;\n return;\n }\n }\n\n if (data.allowTouchCallbacks) {\n swiper.emit('touchMove', e);\n }\n\n if (e.targetTouches && e.targetTouches.length > 1) return;\n touches.currentX = pageX;\n touches.currentY = pageY;\n const diffX = touches.currentX - touches.startX;\n const diffY = touches.currentY - touches.startY;\n if (swiper.params.threshold && Math.sqrt(diffX ** 2 + diffY ** 2) < swiper.params.threshold) return;\n\n if (typeof data.isScrolling === 'undefined') {\n let touchAngle;\n\n if (swiper.isHorizontal() && touches.currentY === touches.startY || swiper.isVertical() && touches.currentX === touches.startX) {\n data.isScrolling = false;\n } else {\n // eslint-disable-next-line\n if (diffX * diffX + diffY * diffY >= 25) {\n touchAngle = Math.atan2(Math.abs(diffY), Math.abs(diffX)) * 180 / Math.PI;\n data.isScrolling = swiper.isHorizontal() ? touchAngle > params.touchAngle : 90 - touchAngle > params.touchAngle;\n }\n }\n }\n\n if (data.isScrolling) {\n swiper.emit('touchMoveOpposite', e);\n }\n\n if (typeof data.startMoving === 'undefined') {\n if (touches.currentX !== touches.startX || touches.currentY !== touches.startY) {\n data.startMoving = true;\n }\n }\n\n if (data.isScrolling) {\n data.isTouched = false;\n return;\n }\n\n if (!data.startMoving) {\n return;\n }\n\n swiper.allowClick = false;\n\n if (!params.cssMode && e.cancelable) {\n e.preventDefault();\n }\n\n if (params.touchMoveStopPropagation && !params.nested) {\n e.stopPropagation();\n }\n\n if (!data.isMoved) {\n if (params.loop && !params.cssMode) {\n swiper.loopFix();\n }\n\n data.startTranslate = swiper.getTranslate();\n swiper.setTransition(0);\n\n if (swiper.animating) {\n swiper.$wrapperEl.trigger('webkitTransitionEnd transitionend');\n }\n\n data.allowMomentumBounce = false; // Grab Cursor\n\n if (params.grabCursor && (swiper.allowSlideNext === true || swiper.allowSlidePrev === true)) {\n swiper.setGrabCursor(true);\n }\n\n swiper.emit('sliderFirstMove', e);\n }\n\n swiper.emit('sliderMove', e);\n data.isMoved = true;\n let diff = swiper.isHorizontal() ? diffX : diffY;\n touches.diff = diff;\n diff *= params.touchRatio;\n if (rtl) diff = -diff;\n swiper.swipeDirection = diff > 0 ? 'prev' : 'next';\n data.currentTranslate = diff + data.startTranslate;\n let disableParentSwiper = true;\n let resistanceRatio = params.resistanceRatio;\n\n if (params.touchReleaseOnEdges) {\n resistanceRatio = 0;\n }\n\n if (diff > 0 && data.currentTranslate > swiper.minTranslate()) {\n disableParentSwiper = false;\n if (params.resistance) data.currentTranslate = swiper.minTranslate() - 1 + (-swiper.minTranslate() + data.startTranslate + diff) ** resistanceRatio;\n } else if (diff < 0 && data.currentTranslate < swiper.maxTranslate()) {\n disableParentSwiper = false;\n if (params.resistance) data.currentTranslate = swiper.maxTranslate() + 1 - (swiper.maxTranslate() - data.startTranslate - diff) ** resistanceRatio;\n }\n\n if (disableParentSwiper) {\n e.preventedByNestedSwiper = true;\n } // Directions locks\n\n\n if (!swiper.allowSlideNext && swiper.swipeDirection === 'next' && data.currentTranslate < data.startTranslate) {\n data.currentTranslate = data.startTranslate;\n }\n\n if (!swiper.allowSlidePrev && swiper.swipeDirection === 'prev' && data.currentTranslate > data.startTranslate) {\n data.currentTranslate = data.startTranslate;\n }\n\n if (!swiper.allowSlidePrev && !swiper.allowSlideNext) {\n data.currentTranslate = data.startTranslate;\n } // Threshold\n\n\n if (params.threshold > 0) {\n if (Math.abs(diff) > params.threshold || data.allowThresholdMove) {\n if (!data.allowThresholdMove) {\n data.allowThresholdMove = true;\n touches.startX = touches.currentX;\n touches.startY = touches.currentY;\n data.currentTranslate = data.startTranslate;\n touches.diff = swiper.isHorizontal() ? touches.currentX - touches.startX : touches.currentY - touches.startY;\n return;\n }\n } else {\n data.currentTranslate = data.startTranslate;\n return;\n }\n }\n\n if (!params.followFinger || params.cssMode) return; // Update active index in free mode\n\n if (params.freeMode && params.freeMode.enabled && swiper.freeMode || params.watchSlidesProgress) {\n swiper.updateActiveIndex();\n swiper.updateSlidesClasses();\n }\n\n if (swiper.params.freeMode && params.freeMode.enabled && swiper.freeMode) {\n swiper.freeMode.onTouchMove();\n } // Update progress\n\n\n swiper.updateProgress(data.currentTranslate); // Update translate\n\n swiper.setTranslate(data.currentTranslate);\n}","import { getWindow, getDocument } from 'ssr-window';\nimport $ from '../../shared/dom.js';\nimport { now } from '../../shared/utils.js'; // Modified from https://stackoverflow.com/questions/54520554/custom-element-getrootnode-closest-function-crossing-multiple-parent-shadowd\n\nfunction closestElement(selector, base = this) {\n function __closestFrom(el) {\n if (!el || el === getDocument() || el === getWindow()) return null;\n if (el.assignedSlot) el = el.assignedSlot;\n const found = el.closest(selector);\n return found || __closestFrom(el.getRootNode().host);\n }\n\n return __closestFrom(base);\n}\n\nexport default function onTouchStart(event) {\n const swiper = this;\n const document = getDocument();\n const window = getWindow();\n const data = swiper.touchEventsData;\n const {\n params,\n touches,\n enabled\n } = swiper;\n if (!enabled) return;\n\n if (swiper.animating && params.preventInteractionOnTransition) {\n return;\n }\n\n if (!swiper.animating && params.cssMode && params.loop) {\n swiper.loopFix();\n }\n\n let e = event;\n if (e.originalEvent) e = e.originalEvent;\n let $targetEl = $(e.target);\n\n if (params.touchEventsTarget === 'wrapper') {\n if (!$targetEl.closest(swiper.wrapperEl).length) return;\n }\n\n data.isTouchEvent = e.type === 'touchstart';\n if (!data.isTouchEvent && 'which' in e && e.which === 3) return;\n if (!data.isTouchEvent && 'button' in e && e.button > 0) return;\n if (data.isTouched && data.isMoved) return; // change target el for shadow root component\n\n const swipingClassHasValue = !!params.noSwipingClass && params.noSwipingClass !== '';\n\n if (swipingClassHasValue && e.target && e.target.shadowRoot && event.path && event.path[0]) {\n $targetEl = $(event.path[0]);\n }\n\n const noSwipingSelector = params.noSwipingSelector ? params.noSwipingSelector : `.${params.noSwipingClass}`;\n const isTargetShadow = !!(e.target && e.target.shadowRoot); // use closestElement for shadow root element to get the actual closest for nested shadow root element\n\n if (params.noSwiping && (isTargetShadow ? closestElement(noSwipingSelector, e.target) : $targetEl.closest(noSwipingSelector)[0])) {\n swiper.allowClick = true;\n return;\n }\n\n if (params.swipeHandler) {\n if (!$targetEl.closest(params.swipeHandler)[0]) return;\n }\n\n touches.currentX = e.type === 'touchstart' ? e.targetTouches[0].pageX : e.pageX;\n touches.currentY = e.type === 'touchstart' ? e.targetTouches[0].pageY : e.pageY;\n const startX = touches.currentX;\n const startY = touches.currentY; // Do NOT start if iOS edge swipe is detected. Otherwise iOS app cannot swipe-to-go-back anymore\n\n const edgeSwipeDetection = params.edgeSwipeDetection || params.iOSEdgeSwipeDetection;\n const edgeSwipeThreshold = params.edgeSwipeThreshold || params.iOSEdgeSwipeThreshold;\n\n if (edgeSwipeDetection && (startX <= edgeSwipeThreshold || startX >= window.innerWidth - edgeSwipeThreshold)) {\n if (edgeSwipeDetection === 'prevent') {\n event.preventDefault();\n } else {\n return;\n }\n }\n\n Object.assign(data, {\n isTouched: true,\n isMoved: false,\n allowTouchCallbacks: true,\n isScrolling: undefined,\n startMoving: undefined\n });\n touches.startX = startX;\n touches.startY = startY;\n data.touchStartTime = now();\n swiper.allowClick = true;\n swiper.updateSize();\n swiper.swipeDirection = undefined;\n if (params.threshold > 0) data.allowThresholdMove = false;\n\n if (e.type !== 'touchstart') {\n let preventDefault = true;\n if ($targetEl.is(data.focusableElements)) preventDefault = false;\n\n if (document.activeElement && $(document.activeElement).is(data.focusableElements) && document.activeElement !== $targetEl[0]) {\n document.activeElement.blur();\n }\n\n const shouldPreventDefault = preventDefault && swiper.allowTouchMove && params.touchStartPreventDefault;\n\n if ((params.touchStartForcePreventDefault || shouldPreventDefault) && !$targetEl[0].isContentEditable) {\n e.preventDefault();\n }\n }\n\n swiper.emit('touchStart', e);\n}","import setGrabCursor from './setGrabCursor.js';\nimport unsetGrabCursor from './unsetGrabCursor.js';\nexport default {\n setGrabCursor,\n unsetGrabCursor\n};","export default function setGrabCursor(moving) {\n const swiper = this;\n if (swiper.support.touch || !swiper.params.simulateTouch || swiper.params.watchOverflow && swiper.isLocked || swiper.params.cssMode) return;\n const el = swiper.params.touchEventsTarget === 'container' ? swiper.el : swiper.wrapperEl;\n el.style.cursor = 'move';\n el.style.cursor = moving ? '-webkit-grabbing' : '-webkit-grab';\n el.style.cursor = moving ? '-moz-grabbin' : '-moz-grab';\n el.style.cursor = moving ? 'grabbing' : 'grab';\n}","export default function unsetGrabCursor() {\n const swiper = this;\n\n if (swiper.support.touch || swiper.params.watchOverflow && swiper.isLocked || swiper.params.cssMode) {\n return;\n }\n\n swiper[swiper.params.touchEventsTarget === 'container' ? 'el' : 'wrapperEl'].style.cursor = '';\n}","import loadImage from './loadImage.js';\nimport preloadImages from './preloadImages.js';\nexport default {\n loadImage,\n preloadImages\n};","import { getWindow } from 'ssr-window';\nimport $ from '../../shared/dom.js';\nexport default function loadImage(imageEl, src, srcset, sizes, checkForComplete, callback) {\n const window = getWindow();\n let image;\n\n function onReady() {\n if (callback) callback();\n }\n\n const isPicture = $(imageEl).parent('picture')[0];\n\n if (!isPicture && (!imageEl.complete || !checkForComplete)) {\n if (src) {\n image = new window.Image();\n image.onload = onReady;\n image.onerror = onReady;\n\n if (sizes) {\n image.sizes = sizes;\n }\n\n if (srcset) {\n image.srcset = srcset;\n }\n\n if (src) {\n image.src = src;\n }\n } else {\n onReady();\n }\n } else {\n // image already loaded...\n onReady();\n }\n}","export default function preloadImages() {\n const swiper = this;\n swiper.imagesToLoad = swiper.$el.find('img');\n\n function onReady() {\n if (typeof swiper === 'undefined' || swiper === null || !swiper || swiper.destroyed) return;\n if (swiper.imagesLoaded !== undefined) swiper.imagesLoaded += 1;\n\n if (swiper.imagesLoaded === swiper.imagesToLoad.length) {\n if (swiper.params.updateOnImagesReady) swiper.update();\n swiper.emit('imagesReady');\n }\n }\n\n for (let i = 0; i < swiper.imagesToLoad.length; i += 1) {\n const imageEl = swiper.imagesToLoad[i];\n swiper.loadImage(imageEl, imageEl.currentSrc || imageEl.getAttribute('src'), imageEl.srcset || imageEl.getAttribute('srcset'), imageEl.sizes || imageEl.getAttribute('sizes'), true, onReady);\n }\n}","import loopCreate from './loopCreate.js';\nimport loopFix from './loopFix.js';\nimport loopDestroy from './loopDestroy.js';\nexport default {\n loopCreate,\n loopFix,\n loopDestroy\n};","import { getDocument } from 'ssr-window';\nimport $ from '../../shared/dom.js';\nexport default function loopCreate() {\n const swiper = this;\n const document = getDocument();\n const {\n params,\n $wrapperEl\n } = swiper; // Remove duplicated slides\n\n const $selector = $wrapperEl.children().length > 0 ? $($wrapperEl.children()[0].parentNode) : $wrapperEl;\n $selector.children(`.${params.slideClass}.${params.slideDuplicateClass}`).remove();\n let slides = $selector.children(`.${params.slideClass}`);\n\n if (params.loopFillGroupWithBlank) {\n const blankSlidesNum = params.slidesPerGroup - slides.length % params.slidesPerGroup;\n\n if (blankSlidesNum !== params.slidesPerGroup) {\n for (let i = 0; i < blankSlidesNum; i += 1) {\n const blankNode = $(document.createElement('div')).addClass(`${params.slideClass} ${params.slideBlankClass}`);\n $selector.append(blankNode);\n }\n\n slides = $selector.children(`.${params.slideClass}`);\n }\n }\n\n if (params.slidesPerView === 'auto' && !params.loopedSlides) params.loopedSlides = slides.length;\n swiper.loopedSlides = Math.ceil(parseFloat(params.loopedSlides || params.slidesPerView, 10));\n swiper.loopedSlides += params.loopAdditionalSlides;\n\n if (swiper.loopedSlides > slides.length) {\n swiper.loopedSlides = slides.length;\n }\n\n const prependSlides = [];\n const appendSlides = [];\n slides.each((el, index) => {\n const slide = $(el);\n\n if (index < swiper.loopedSlides) {\n appendSlides.push(el);\n }\n\n if (index < slides.length && index >= slides.length - swiper.loopedSlides) {\n prependSlides.push(el);\n }\n\n slide.attr('data-swiper-slide-index', index);\n });\n\n for (let i = 0; i < appendSlides.length; i += 1) {\n $selector.append($(appendSlides[i].cloneNode(true)).addClass(params.slideDuplicateClass));\n }\n\n for (let i = prependSlides.length - 1; i >= 0; i -= 1) {\n $selector.prepend($(prependSlides[i].cloneNode(true)).addClass(params.slideDuplicateClass));\n }\n}","export default function loopDestroy() {\n const swiper = this;\n const {\n $wrapperEl,\n params,\n slides\n } = swiper;\n $wrapperEl.children(`.${params.slideClass}.${params.slideDuplicateClass},.${params.slideClass}.${params.slideBlankClass}`).remove();\n slides.removeAttr('data-swiper-slide-index');\n}","export default function loopFix() {\n const swiper = this;\n swiper.emit('beforeLoopFix');\n const {\n activeIndex,\n slides,\n loopedSlides,\n allowSlidePrev,\n allowSlideNext,\n snapGrid,\n rtlTranslate: rtl\n } = swiper;\n let newIndex;\n swiper.allowSlidePrev = true;\n swiper.allowSlideNext = true;\n const snapTranslate = -snapGrid[activeIndex];\n const diff = snapTranslate - swiper.getTranslate(); // Fix For Negative Oversliding\n\n if (activeIndex < loopedSlides) {\n newIndex = slides.length - loopedSlides * 3 + activeIndex;\n newIndex += loopedSlides;\n const slideChanged = swiper.slideTo(newIndex, 0, false, true);\n\n if (slideChanged && diff !== 0) {\n swiper.setTranslate((rtl ? -swiper.translate : swiper.translate) - diff);\n }\n } else if (activeIndex >= slides.length - loopedSlides) {\n // Fix For Positive Oversliding\n newIndex = -slides.length + activeIndex + loopedSlides;\n newIndex += loopedSlides;\n const slideChanged = swiper.slideTo(newIndex, 0, false, true);\n\n if (slideChanged && diff !== 0) {\n swiper.setTranslate((rtl ? -swiper.translate : swiper.translate) - diff);\n }\n }\n\n swiper.allowSlidePrev = allowSlidePrev;\n swiper.allowSlideNext = allowSlideNext;\n swiper.emit('loopFix');\n}","import { extend } from '../shared/utils.js';\nexport default function moduleExtendParams(params, allModulesParams) {\n return function extendParams(obj = {}) {\n const moduleParamName = Object.keys(obj)[0];\n const moduleParams = obj[moduleParamName];\n\n if (typeof moduleParams !== 'object' || moduleParams === null) {\n extend(allModulesParams, obj);\n return;\n }\n\n if (['navigation', 'pagination', 'scrollbar'].indexOf(moduleParamName) >= 0 && params[moduleParamName] === true) {\n params[moduleParamName] = {\n auto: true\n };\n }\n\n if (!(moduleParamName in params && 'enabled' in moduleParams)) {\n extend(allModulesParams, obj);\n return;\n }\n\n if (params[moduleParamName] === true) {\n params[moduleParamName] = {\n enabled: true\n };\n }\n\n if (typeof params[moduleParamName] === 'object' && !('enabled' in params[moduleParamName])) {\n params[moduleParamName].enabled = true;\n }\n\n if (!params[moduleParamName]) params[moduleParamName] = {\n enabled: false\n };\n extend(allModulesParams, obj);\n };\n}","import { getWindow } from 'ssr-window';\nexport default function Observer({\n swiper,\n extendParams,\n on,\n emit\n}) {\n const observers = [];\n const window = getWindow();\n\n const attach = (target, options = {}) => {\n const ObserverFunc = window.MutationObserver || window.WebkitMutationObserver;\n const observer = new ObserverFunc(mutations => {\n // The observerUpdate event should only be triggered\n // once despite the number of mutations. Additional\n // triggers are redundant and are very costly\n if (mutations.length === 1) {\n emit('observerUpdate', mutations[0]);\n return;\n }\n\n const observerUpdate = function observerUpdate() {\n emit('observerUpdate', mutations[0]);\n };\n\n if (window.requestAnimationFrame) {\n window.requestAnimationFrame(observerUpdate);\n } else {\n window.setTimeout(observerUpdate, 0);\n }\n });\n observer.observe(target, {\n attributes: typeof options.attributes === 'undefined' ? true : options.attributes,\n childList: typeof options.childList === 'undefined' ? true : options.childList,\n characterData: typeof options.characterData === 'undefined' ? true : options.characterData\n });\n observers.push(observer);\n };\n\n const init = () => {\n if (!swiper.params.observer) return;\n\n if (swiper.params.observeParents) {\n const containerParents = swiper.$el.parents();\n\n for (let i = 0; i < containerParents.length; i += 1) {\n attach(containerParents[i]);\n }\n } // Observe container\n\n\n attach(swiper.$el[0], {\n childList: swiper.params.observeSlideChildren\n }); // Observe wrapper\n\n attach(swiper.$wrapperEl[0], {\n attributes: false\n });\n };\n\n const destroy = () => {\n observers.forEach(observer => {\n observer.disconnect();\n });\n observers.splice(0, observers.length);\n };\n\n extendParams({\n observer: false,\n observeParents: false,\n observeSlideChildren: false\n });\n on('init', init);\n on('destroy', destroy);\n}","import { getWindow } from 'ssr-window';\nexport default function Resize({\n swiper,\n on,\n emit\n}) {\n const window = getWindow();\n let observer = null;\n\n const resizeHandler = () => {\n if (!swiper || swiper.destroyed || !swiper.initialized) return;\n emit('beforeResize');\n emit('resize');\n };\n\n const createObserver = () => {\n if (!swiper || swiper.destroyed || !swiper.initialized) return;\n observer = new ResizeObserver(entries => {\n const {\n width,\n height\n } = swiper;\n let newWidth = width;\n let newHeight = height;\n entries.forEach(({\n contentBoxSize,\n contentRect,\n target\n }) => {\n if (target && target !== swiper.el) return;\n newWidth = contentRect ? contentRect.width : (contentBoxSize[0] || contentBoxSize).inlineSize;\n newHeight = contentRect ? contentRect.height : (contentBoxSize[0] || contentBoxSize).blockSize;\n });\n\n if (newWidth !== width || newHeight !== height) {\n resizeHandler();\n }\n });\n observer.observe(swiper.el);\n };\n\n const removeObserver = () => {\n if (observer && observer.unobserve && swiper.el) {\n observer.unobserve(swiper.el);\n observer = null;\n }\n };\n\n const orientationChangeHandler = () => {\n if (!swiper || swiper.destroyed || !swiper.initialized) return;\n emit('orientationchange');\n };\n\n on('init', () => {\n if (swiper.params.resizeObserver && typeof window.ResizeObserver !== 'undefined') {\n createObserver();\n return;\n }\n\n window.addEventListener('resize', resizeHandler);\n window.addEventListener('orientationchange', orientationChangeHandler);\n });\n on('destroy', () => {\n removeObserver();\n window.removeEventListener('resize', resizeHandler);\n window.removeEventListener('orientationchange', orientationChangeHandler);\n });\n}","import slideTo from './slideTo.js';\nimport slideToLoop from './slideToLoop.js';\nimport slideNext from './slideNext.js';\nimport slidePrev from './slidePrev.js';\nimport slideReset from './slideReset.js';\nimport slideToClosest from './slideToClosest.js';\nimport slideToClickedSlide from './slideToClickedSlide.js';\nexport default {\n slideTo,\n slideToLoop,\n slideNext,\n slidePrev,\n slideReset,\n slideToClosest,\n slideToClickedSlide\n};","/* eslint no-unused-vars: \"off\" */\nexport default function slideNext(speed = this.params.speed, runCallbacks = true, internal) {\n const swiper = this;\n const {\n animating,\n enabled,\n params\n } = swiper;\n if (!enabled) return swiper;\n let perGroup = params.slidesPerGroup;\n\n if (params.slidesPerView === 'auto' && params.slidesPerGroup === 1 && params.slidesPerGroupAuto) {\n perGroup = Math.max(swiper.slidesPerViewDynamic('current', true), 1);\n }\n\n const increment = swiper.activeIndex < params.slidesPerGroupSkip ? 1 : perGroup;\n\n if (params.loop) {\n if (animating && params.loopPreventsSlide) return false;\n swiper.loopFix(); // eslint-disable-next-line\n\n swiper._clientLeft = swiper.$wrapperEl[0].clientLeft;\n }\n\n if (params.rewind && swiper.isEnd) {\n return swiper.slideTo(0, speed, runCallbacks, internal);\n }\n\n return swiper.slideTo(swiper.activeIndex + increment, speed, runCallbacks, internal);\n}","/* eslint no-unused-vars: \"off\" */\nexport default function slidePrev(speed = this.params.speed, runCallbacks = true, internal) {\n const swiper = this;\n const {\n params,\n animating,\n snapGrid,\n slidesGrid,\n rtlTranslate,\n enabled\n } = swiper;\n if (!enabled) return swiper;\n\n if (params.loop) {\n if (animating && params.loopPreventsSlide) return false;\n swiper.loopFix(); // eslint-disable-next-line\n\n swiper._clientLeft = swiper.$wrapperEl[0].clientLeft;\n }\n\n const translate = rtlTranslate ? swiper.translate : -swiper.translate;\n\n function normalize(val) {\n if (val < 0) return -Math.floor(Math.abs(val));\n return Math.floor(val);\n }\n\n const normalizedTranslate = normalize(translate);\n const normalizedSnapGrid = snapGrid.map(val => normalize(val));\n let prevSnap = snapGrid[normalizedSnapGrid.indexOf(normalizedTranslate) - 1];\n\n if (typeof prevSnap === 'undefined' && params.cssMode) {\n let prevSnapIndex;\n snapGrid.forEach((snap, snapIndex) => {\n if (normalizedTranslate >= snap) {\n // prevSnap = snap;\n prevSnapIndex = snapIndex;\n }\n });\n\n if (typeof prevSnapIndex !== 'undefined') {\n prevSnap = snapGrid[prevSnapIndex > 0 ? prevSnapIndex - 1 : prevSnapIndex];\n }\n }\n\n let prevIndex = 0;\n\n if (typeof prevSnap !== 'undefined') {\n prevIndex = slidesGrid.indexOf(prevSnap);\n if (prevIndex < 0) prevIndex = swiper.activeIndex - 1;\n\n if (params.slidesPerView === 'auto' && params.slidesPerGroup === 1 && params.slidesPerGroupAuto) {\n prevIndex = prevIndex - swiper.slidesPerViewDynamic('previous', true) + 1;\n prevIndex = Math.max(prevIndex, 0);\n }\n }\n\n if (params.rewind && swiper.isBeginning) {\n return swiper.slideTo(swiper.slides.length - 1, speed, runCallbacks, internal);\n }\n\n return swiper.slideTo(prevIndex, speed, runCallbacks, internal);\n}","/* eslint no-unused-vars: \"off\" */\nexport default function slideReset(speed = this.params.speed, runCallbacks = true, internal) {\n const swiper = this;\n return swiper.slideTo(swiper.activeIndex, speed, runCallbacks, internal);\n}","import { animateCSSModeScroll } from '../../shared/utils.js';\nexport default function slideTo(index = 0, speed = this.params.speed, runCallbacks = true, internal, initial) {\n if (typeof index !== 'number' && typeof index !== 'string') {\n throw new Error(`The 'index' argument cannot have type other than 'number' or 'string'. [${typeof index}] given.`);\n }\n\n if (typeof index === 'string') {\n /**\n * The `index` argument converted from `string` to `number`.\n * @type {number}\n */\n const indexAsNumber = parseInt(index, 10);\n /**\n * Determines whether the `index` argument is a valid `number`\n * after being converted from the `string` type.\n * @type {boolean}\n */\n\n const isValidNumber = isFinite(indexAsNumber);\n\n if (!isValidNumber) {\n throw new Error(`The passed-in 'index' (string) couldn't be converted to 'number'. [${index}] given.`);\n } // Knowing that the converted `index` is a valid number,\n // we can update the original argument's value.\n\n\n index = indexAsNumber;\n }\n\n const swiper = this;\n let slideIndex = index;\n if (slideIndex < 0) slideIndex = 0;\n const {\n params,\n snapGrid,\n slidesGrid,\n previousIndex,\n activeIndex,\n rtlTranslate: rtl,\n wrapperEl,\n enabled\n } = swiper;\n\n if (swiper.animating && params.preventInteractionOnTransition || !enabled && !internal && !initial) {\n return false;\n }\n\n const skip = Math.min(swiper.params.slidesPerGroupSkip, slideIndex);\n let snapIndex = skip + Math.floor((slideIndex - skip) / swiper.params.slidesPerGroup);\n if (snapIndex >= snapGrid.length) snapIndex = snapGrid.length - 1;\n\n if ((activeIndex || params.initialSlide || 0) === (previousIndex || 0) && runCallbacks) {\n swiper.emit('beforeSlideChangeStart');\n }\n\n const translate = -snapGrid[snapIndex]; // Update progress\n\n swiper.updateProgress(translate); // Normalize slideIndex\n\n if (params.normalizeSlideIndex) {\n for (let i = 0; i < slidesGrid.length; i += 1) {\n const normalizedTranslate = -Math.floor(translate * 100);\n const normalizedGrid = Math.floor(slidesGrid[i] * 100);\n const normalizedGridNext = Math.floor(slidesGrid[i + 1] * 100);\n\n if (typeof slidesGrid[i + 1] !== 'undefined') {\n if (normalizedTranslate >= normalizedGrid && normalizedTranslate < normalizedGridNext - (normalizedGridNext - normalizedGrid) / 2) {\n slideIndex = i;\n } else if (normalizedTranslate >= normalizedGrid && normalizedTranslate < normalizedGridNext) {\n slideIndex = i + 1;\n }\n } else if (normalizedTranslate >= normalizedGrid) {\n slideIndex = i;\n }\n }\n } // Directions locks\n\n\n if (swiper.initialized && slideIndex !== activeIndex) {\n if (!swiper.allowSlideNext && translate < swiper.translate && translate < swiper.minTranslate()) {\n return false;\n }\n\n if (!swiper.allowSlidePrev && translate > swiper.translate && translate > swiper.maxTranslate()) {\n if ((activeIndex || 0) !== slideIndex) return false;\n }\n }\n\n let direction;\n if (slideIndex > activeIndex) direction = 'next';else if (slideIndex < activeIndex) direction = 'prev';else direction = 'reset'; // Update Index\n\n if (rtl && -translate === swiper.translate || !rtl && translate === swiper.translate) {\n swiper.updateActiveIndex(slideIndex); // Update Height\n\n if (params.autoHeight) {\n swiper.updateAutoHeight();\n }\n\n swiper.updateSlidesClasses();\n\n if (params.effect !== 'slide') {\n swiper.setTranslate(translate);\n }\n\n if (direction !== 'reset') {\n swiper.transitionStart(runCallbacks, direction);\n swiper.transitionEnd(runCallbacks, direction);\n }\n\n return false;\n }\n\n if (params.cssMode) {\n const isH = swiper.isHorizontal();\n const t = rtl ? translate : -translate;\n\n if (speed === 0) {\n const isVirtual = swiper.virtual && swiper.params.virtual.enabled;\n\n if (isVirtual) {\n swiper.wrapperEl.style.scrollSnapType = 'none';\n swiper._immediateVirtual = true;\n }\n\n wrapperEl[isH ? 'scrollLeft' : 'scrollTop'] = t;\n\n if (isVirtual) {\n requestAnimationFrame(() => {\n swiper.wrapperEl.style.scrollSnapType = '';\n swiper._swiperImmediateVirtual = false;\n });\n }\n } else {\n if (!swiper.support.smoothScroll) {\n animateCSSModeScroll({\n swiper,\n targetPosition: t,\n side: isH ? 'left' : 'top'\n });\n return true;\n }\n\n wrapperEl.scrollTo({\n [isH ? 'left' : 'top']: t,\n behavior: 'smooth'\n });\n }\n\n return true;\n }\n\n swiper.setTransition(speed);\n swiper.setTranslate(translate);\n swiper.updateActiveIndex(slideIndex);\n swiper.updateSlidesClasses();\n swiper.emit('beforeTransitionStart', speed, internal);\n swiper.transitionStart(runCallbacks, direction);\n\n if (speed === 0) {\n swiper.transitionEnd(runCallbacks, direction);\n } else if (!swiper.animating) {\n swiper.animating = true;\n\n if (!swiper.onSlideToWrapperTransitionEnd) {\n swiper.onSlideToWrapperTransitionEnd = function transitionEnd(e) {\n if (!swiper || swiper.destroyed) return;\n if (e.target !== this) return;\n swiper.$wrapperEl[0].removeEventListener('transitionend', swiper.onSlideToWrapperTransitionEnd);\n swiper.$wrapperEl[0].removeEventListener('webkitTransitionEnd', swiper.onSlideToWrapperTransitionEnd);\n swiper.onSlideToWrapperTransitionEnd = null;\n delete swiper.onSlideToWrapperTransitionEnd;\n swiper.transitionEnd(runCallbacks, direction);\n };\n }\n\n swiper.$wrapperEl[0].addEventListener('transitionend', swiper.onSlideToWrapperTransitionEnd);\n swiper.$wrapperEl[0].addEventListener('webkitTransitionEnd', swiper.onSlideToWrapperTransitionEnd);\n }\n\n return true;\n}","import $ from '../../shared/dom.js';\nimport { nextTick } from '../../shared/utils.js';\nexport default function slideToClickedSlide() {\n const swiper = this;\n const {\n params,\n $wrapperEl\n } = swiper;\n const slidesPerView = params.slidesPerView === 'auto' ? swiper.slidesPerViewDynamic() : params.slidesPerView;\n let slideToIndex = swiper.clickedIndex;\n let realIndex;\n\n if (params.loop) {\n if (swiper.animating) return;\n realIndex = parseInt($(swiper.clickedSlide).attr('data-swiper-slide-index'), 10);\n\n if (params.centeredSlides) {\n if (slideToIndex < swiper.loopedSlides - slidesPerView / 2 || slideToIndex > swiper.slides.length - swiper.loopedSlides + slidesPerView / 2) {\n swiper.loopFix();\n slideToIndex = $wrapperEl.children(`.${params.slideClass}[data-swiper-slide-index=\"${realIndex}\"]:not(.${params.slideDuplicateClass})`).eq(0).index();\n nextTick(() => {\n swiper.slideTo(slideToIndex);\n });\n } else {\n swiper.slideTo(slideToIndex);\n }\n } else if (slideToIndex > swiper.slides.length - slidesPerView) {\n swiper.loopFix();\n slideToIndex = $wrapperEl.children(`.${params.slideClass}[data-swiper-slide-index=\"${realIndex}\"]:not(.${params.slideDuplicateClass})`).eq(0).index();\n nextTick(() => {\n swiper.slideTo(slideToIndex);\n });\n } else {\n swiper.slideTo(slideToIndex);\n }\n } else {\n swiper.slideTo(slideToIndex);\n }\n}","/* eslint no-unused-vars: \"off\" */\nexport default function slideToClosest(speed = this.params.speed, runCallbacks = true, internal, threshold = 0.5) {\n const swiper = this;\n let index = swiper.activeIndex;\n const skip = Math.min(swiper.params.slidesPerGroupSkip, index);\n const snapIndex = skip + Math.floor((index - skip) / swiper.params.slidesPerGroup);\n const translate = swiper.rtlTranslate ? swiper.translate : -swiper.translate;\n\n if (translate >= swiper.snapGrid[snapIndex]) {\n // The current translate is on or after the current snap index, so the choice\n // is between the current index and the one after it.\n const currentSnap = swiper.snapGrid[snapIndex];\n const nextSnap = swiper.snapGrid[snapIndex + 1];\n\n if (translate - currentSnap > (nextSnap - currentSnap) * threshold) {\n index += swiper.params.slidesPerGroup;\n }\n } else {\n // The current translate is before the current snap index, so the choice\n // is between the current index and the one before it.\n const prevSnap = swiper.snapGrid[snapIndex - 1];\n const currentSnap = swiper.snapGrid[snapIndex];\n\n if (translate - prevSnap <= (currentSnap - prevSnap) * threshold) {\n index -= swiper.params.slidesPerGroup;\n }\n }\n\n index = Math.max(index, 0);\n index = Math.min(index, swiper.slidesGrid.length - 1);\n return swiper.slideTo(index, speed, runCallbacks, internal);\n}","export default function slideToLoop(index = 0, speed = this.params.speed, runCallbacks = true, internal) {\n const swiper = this;\n let newIndex = index;\n\n if (swiper.params.loop) {\n newIndex += swiper.loopedSlides;\n }\n\n return swiper.slideTo(newIndex, speed, runCallbacks, internal);\n}","import setTransition from './setTransition.js';\nimport transitionStart from './transitionStart.js';\nimport transitionEnd from './transitionEnd.js';\nexport default {\n setTransition,\n transitionStart,\n transitionEnd\n};","export default function setTransition(duration, byController) {\n const swiper = this;\n\n if (!swiper.params.cssMode) {\n swiper.$wrapperEl.transition(duration);\n }\n\n swiper.emit('setTransition', duration, byController);\n}","export default function transitionEmit({\n swiper,\n runCallbacks,\n direction,\n step\n}) {\n const {\n activeIndex,\n previousIndex\n } = swiper;\n let dir = direction;\n\n if (!dir) {\n if (activeIndex > previousIndex) dir = 'next';else if (activeIndex < previousIndex) dir = 'prev';else dir = 'reset';\n }\n\n swiper.emit(`transition${step}`);\n\n if (runCallbacks && activeIndex !== previousIndex) {\n if (dir === 'reset') {\n swiper.emit(`slideResetTransition${step}`);\n return;\n }\n\n swiper.emit(`slideChangeTransition${step}`);\n\n if (dir === 'next') {\n swiper.emit(`slideNextTransition${step}`);\n } else {\n swiper.emit(`slidePrevTransition${step}`);\n }\n }\n}","import transitionEmit from './transitionEmit.js';\nexport default function transitionEnd(runCallbacks = true, direction) {\n const swiper = this;\n const {\n params\n } = swiper;\n swiper.animating = false;\n if (params.cssMode) return;\n swiper.setTransition(0);\n transitionEmit({\n swiper,\n runCallbacks,\n direction,\n step: 'End'\n });\n}","import transitionEmit from './transitionEmit.js';\nexport default function transitionStart(runCallbacks = true, direction) {\n const swiper = this;\n const {\n params\n } = swiper;\n if (params.cssMode) return;\n\n if (params.autoHeight) {\n swiper.updateAutoHeight();\n }\n\n transitionEmit({\n swiper,\n runCallbacks,\n direction,\n step: 'Start'\n });\n}","import { getTranslate } from '../../shared/utils.js';\nexport default function getSwiperTranslate(axis = this.isHorizontal() ? 'x' : 'y') {\n const swiper = this;\n const {\n params,\n rtlTranslate: rtl,\n translate,\n $wrapperEl\n } = swiper;\n\n if (params.virtualTranslate) {\n return rtl ? -translate : translate;\n }\n\n if (params.cssMode) {\n return translate;\n }\n\n let currentTranslate = getTranslate($wrapperEl[0], axis);\n if (rtl) currentTranslate = -currentTranslate;\n return currentTranslate || 0;\n}","import getTranslate from './getTranslate.js';\nimport setTranslate from './setTranslate.js';\nimport minTranslate from './minTranslate.js';\nimport maxTranslate from './maxTranslate.js';\nimport translateTo from './translateTo.js';\nexport default {\n getTranslate,\n setTranslate,\n minTranslate,\n maxTranslate,\n translateTo\n};","export default function maxTranslate() {\n return -this.snapGrid[this.snapGrid.length - 1];\n}","export default function minTranslate() {\n return -this.snapGrid[0];\n}","export default function setTranslate(translate, byController) {\n const swiper = this;\n const {\n rtlTranslate: rtl,\n params,\n $wrapperEl,\n wrapperEl,\n progress\n } = swiper;\n let x = 0;\n let y = 0;\n const z = 0;\n\n if (swiper.isHorizontal()) {\n x = rtl ? -translate : translate;\n } else {\n y = translate;\n }\n\n if (params.roundLengths) {\n x = Math.floor(x);\n y = Math.floor(y);\n }\n\n if (params.cssMode) {\n wrapperEl[swiper.isHorizontal() ? 'scrollLeft' : 'scrollTop'] = swiper.isHorizontal() ? -x : -y;\n } else if (!params.virtualTranslate) {\n $wrapperEl.transform(`translate3d(${x}px, ${y}px, ${z}px)`);\n }\n\n swiper.previousTranslate = swiper.translate;\n swiper.translate = swiper.isHorizontal() ? x : y; // Check if we need to update progress\n\n let newProgress;\n const translatesDiff = swiper.maxTranslate() - swiper.minTranslate();\n\n if (translatesDiff === 0) {\n newProgress = 0;\n } else {\n newProgress = (translate - swiper.minTranslate()) / translatesDiff;\n }\n\n if (newProgress !== progress) {\n swiper.updateProgress(translate);\n }\n\n swiper.emit('setTranslate', swiper.translate, byController);\n}","import { animateCSSModeScroll } from '../../shared/utils.js';\nexport default function translateTo(translate = 0, speed = this.params.speed, runCallbacks = true, translateBounds = true, internal) {\n const swiper = this;\n const {\n params,\n wrapperEl\n } = swiper;\n\n if (swiper.animating && params.preventInteractionOnTransition) {\n return false;\n }\n\n const minTranslate = swiper.minTranslate();\n const maxTranslate = swiper.maxTranslate();\n let newTranslate;\n if (translateBounds && translate > minTranslate) newTranslate = minTranslate;else if (translateBounds && translate < maxTranslate) newTranslate = maxTranslate;else newTranslate = translate; // Update progress\n\n swiper.updateProgress(newTranslate);\n\n if (params.cssMode) {\n const isH = swiper.isHorizontal();\n\n if (speed === 0) {\n wrapperEl[isH ? 'scrollLeft' : 'scrollTop'] = -newTranslate;\n } else {\n if (!swiper.support.smoothScroll) {\n animateCSSModeScroll({\n swiper,\n targetPosition: -newTranslate,\n side: isH ? 'left' : 'top'\n });\n return true;\n }\n\n wrapperEl.scrollTo({\n [isH ? 'left' : 'top']: -newTranslate,\n behavior: 'smooth'\n });\n }\n\n return true;\n }\n\n if (speed === 0) {\n swiper.setTransition(0);\n swiper.setTranslate(newTranslate);\n\n if (runCallbacks) {\n swiper.emit('beforeTransitionStart', speed, internal);\n swiper.emit('transitionEnd');\n }\n } else {\n swiper.setTransition(speed);\n swiper.setTranslate(newTranslate);\n\n if (runCallbacks) {\n swiper.emit('beforeTransitionStart', speed, internal);\n swiper.emit('transitionStart');\n }\n\n if (!swiper.animating) {\n swiper.animating = true;\n\n if (!swiper.onTranslateToWrapperTransitionEnd) {\n swiper.onTranslateToWrapperTransitionEnd = function transitionEnd(e) {\n if (!swiper || swiper.destroyed) return;\n if (e.target !== this) return;\n swiper.$wrapperEl[0].removeEventListener('transitionend', swiper.onTranslateToWrapperTransitionEnd);\n swiper.$wrapperEl[0].removeEventListener('webkitTransitionEnd', swiper.onTranslateToWrapperTransitionEnd);\n swiper.onTranslateToWrapperTransitionEnd = null;\n delete swiper.onTranslateToWrapperTransitionEnd;\n\n if (runCallbacks) {\n swiper.emit('transitionEnd');\n }\n };\n }\n\n swiper.$wrapperEl[0].addEventListener('transitionend', swiper.onTranslateToWrapperTransitionEnd);\n swiper.$wrapperEl[0].addEventListener('webkitTransitionEnd', swiper.onTranslateToWrapperTransitionEnd);\n }\n }\n\n return true;\n}","import updateSize from './updateSize.js';\nimport updateSlides from './updateSlides.js';\nimport updateAutoHeight from './updateAutoHeight.js';\nimport updateSlidesOffset from './updateSlidesOffset.js';\nimport updateSlidesProgress from './updateSlidesProgress.js';\nimport updateProgress from './updateProgress.js';\nimport updateSlidesClasses from './updateSlidesClasses.js';\nimport updateActiveIndex from './updateActiveIndex.js';\nimport updateClickedSlide from './updateClickedSlide.js';\nexport default {\n updateSize,\n updateSlides,\n updateAutoHeight,\n updateSlidesOffset,\n updateSlidesProgress,\n updateProgress,\n updateSlidesClasses,\n updateActiveIndex,\n updateClickedSlide\n};","export default function updateActiveIndex(newActiveIndex) {\n const swiper = this;\n const translate = swiper.rtlTranslate ? swiper.translate : -swiper.translate;\n const {\n slidesGrid,\n snapGrid,\n params,\n activeIndex: previousIndex,\n realIndex: previousRealIndex,\n snapIndex: previousSnapIndex\n } = swiper;\n let activeIndex = newActiveIndex;\n let snapIndex;\n\n if (typeof activeIndex === 'undefined') {\n for (let i = 0; i < slidesGrid.length; i += 1) {\n if (typeof slidesGrid[i + 1] !== 'undefined') {\n if (translate >= slidesGrid[i] && translate < slidesGrid[i + 1] - (slidesGrid[i + 1] - slidesGrid[i]) / 2) {\n activeIndex = i;\n } else if (translate >= slidesGrid[i] && translate < slidesGrid[i + 1]) {\n activeIndex = i + 1;\n }\n } else if (translate >= slidesGrid[i]) {\n activeIndex = i;\n }\n } // Normalize slideIndex\n\n\n if (params.normalizeSlideIndex) {\n if (activeIndex < 0 || typeof activeIndex === 'undefined') activeIndex = 0;\n }\n }\n\n if (snapGrid.indexOf(translate) >= 0) {\n snapIndex = snapGrid.indexOf(translate);\n } else {\n const skip = Math.min(params.slidesPerGroupSkip, activeIndex);\n snapIndex = skip + Math.floor((activeIndex - skip) / params.slidesPerGroup);\n }\n\n if (snapIndex >= snapGrid.length) snapIndex = snapGrid.length - 1;\n\n if (activeIndex === previousIndex) {\n if (snapIndex !== previousSnapIndex) {\n swiper.snapIndex = snapIndex;\n swiper.emit('snapIndexChange');\n }\n\n return;\n } // Get real index\n\n\n const realIndex = parseInt(swiper.slides.eq(activeIndex).attr('data-swiper-slide-index') || activeIndex, 10);\n Object.assign(swiper, {\n snapIndex,\n realIndex,\n previousIndex,\n activeIndex\n });\n swiper.emit('activeIndexChange');\n swiper.emit('snapIndexChange');\n\n if (previousRealIndex !== realIndex) {\n swiper.emit('realIndexChange');\n }\n\n if (swiper.initialized || swiper.params.runCallbacksOnInit) {\n swiper.emit('slideChange');\n }\n}","export default function updateAutoHeight(speed) {\n const swiper = this;\n const activeSlides = [];\n const isVirtual = swiper.virtual && swiper.params.virtual.enabled;\n let newHeight = 0;\n let i;\n\n if (typeof speed === 'number') {\n swiper.setTransition(speed);\n } else if (speed === true) {\n swiper.setTransition(swiper.params.speed);\n }\n\n const getSlideByIndex = index => {\n if (isVirtual) {\n return swiper.slides.filter(el => parseInt(el.getAttribute('data-swiper-slide-index'), 10) === index)[0];\n }\n\n return swiper.slides.eq(index)[0];\n }; // Find slides currently in view\n\n\n if (swiper.params.slidesPerView !== 'auto' && swiper.params.slidesPerView > 1) {\n if (swiper.params.centeredSlides) {\n swiper.visibleSlides.each(slide => {\n activeSlides.push(slide);\n });\n } else {\n for (i = 0; i < Math.ceil(swiper.params.slidesPerView); i += 1) {\n const index = swiper.activeIndex + i;\n if (index > swiper.slides.length && !isVirtual) break;\n activeSlides.push(getSlideByIndex(index));\n }\n }\n } else {\n activeSlides.push(getSlideByIndex(swiper.activeIndex));\n } // Find new height from highest slide in view\n\n\n for (i = 0; i < activeSlides.length; i += 1) {\n if (typeof activeSlides[i] !== 'undefined') {\n const height = activeSlides[i].offsetHeight;\n newHeight = height > newHeight ? height : newHeight;\n }\n } // Update Height\n\n\n if (newHeight || newHeight === 0) swiper.$wrapperEl.css('height', `${newHeight}px`);\n}","import $ from '../../shared/dom.js';\nexport default function updateClickedSlide(e) {\n const swiper = this;\n const params = swiper.params;\n const slide = $(e).closest(`.${params.slideClass}`)[0];\n let slideFound = false;\n let slideIndex;\n\n if (slide) {\n for (let i = 0; i < swiper.slides.length; i += 1) {\n if (swiper.slides[i] === slide) {\n slideFound = true;\n slideIndex = i;\n break;\n }\n }\n }\n\n if (slide && slideFound) {\n swiper.clickedSlide = slide;\n\n if (swiper.virtual && swiper.params.virtual.enabled) {\n swiper.clickedIndex = parseInt($(slide).attr('data-swiper-slide-index'), 10);\n } else {\n swiper.clickedIndex = slideIndex;\n }\n } else {\n swiper.clickedSlide = undefined;\n swiper.clickedIndex = undefined;\n return;\n }\n\n if (params.slideToClickedSlide && swiper.clickedIndex !== undefined && swiper.clickedIndex !== swiper.activeIndex) {\n swiper.slideToClickedSlide();\n }\n}","export default function updateProgress(translate) {\n const swiper = this;\n\n if (typeof translate === 'undefined') {\n const multiplier = swiper.rtlTranslate ? -1 : 1; // eslint-disable-next-line\n\n translate = swiper && swiper.translate && swiper.translate * multiplier || 0;\n }\n\n const params = swiper.params;\n const translatesDiff = swiper.maxTranslate() - swiper.minTranslate();\n let {\n progress,\n isBeginning,\n isEnd\n } = swiper;\n const wasBeginning = isBeginning;\n const wasEnd = isEnd;\n\n if (translatesDiff === 0) {\n progress = 0;\n isBeginning = true;\n isEnd = true;\n } else {\n progress = (translate - swiper.minTranslate()) / translatesDiff;\n isBeginning = progress <= 0;\n isEnd = progress >= 1;\n }\n\n Object.assign(swiper, {\n progress,\n isBeginning,\n isEnd\n });\n if (params.watchSlidesProgress || params.centeredSlides && params.autoHeight) swiper.updateSlidesProgress(translate);\n\n if (isBeginning && !wasBeginning) {\n swiper.emit('reachBeginning toEdge');\n }\n\n if (isEnd && !wasEnd) {\n swiper.emit('reachEnd toEdge');\n }\n\n if (wasBeginning && !isBeginning || wasEnd && !isEnd) {\n swiper.emit('fromEdge');\n }\n\n swiper.emit('progress', progress);\n}","export default function updateSize() {\n const swiper = this;\n let width;\n let height;\n const $el = swiper.$el;\n\n if (typeof swiper.params.width !== 'undefined' && swiper.params.width !== null) {\n width = swiper.params.width;\n } else {\n width = $el[0].clientWidth;\n }\n\n if (typeof swiper.params.height !== 'undefined' && swiper.params.height !== null) {\n height = swiper.params.height;\n } else {\n height = $el[0].clientHeight;\n }\n\n if (width === 0 && swiper.isHorizontal() || height === 0 && swiper.isVertical()) {\n return;\n } // Subtract paddings\n\n\n width = width - parseInt($el.css('padding-left') || 0, 10) - parseInt($el.css('padding-right') || 0, 10);\n height = height - parseInt($el.css('padding-top') || 0, 10) - parseInt($el.css('padding-bottom') || 0, 10);\n if (Number.isNaN(width)) width = 0;\n if (Number.isNaN(height)) height = 0;\n Object.assign(swiper, {\n width,\n height,\n size: swiper.isHorizontal() ? width : height\n });\n}","import { setCSSProperty } from '../../shared/utils.js';\nexport default function updateSlides() {\n const swiper = this;\n\n function getDirectionLabel(property) {\n if (swiper.isHorizontal()) {\n return property;\n } // prettier-ignore\n\n\n return {\n 'width': 'height',\n 'margin-top': 'margin-left',\n 'margin-bottom ': 'margin-right',\n 'margin-left': 'margin-top',\n 'margin-right': 'margin-bottom',\n 'padding-left': 'padding-top',\n 'padding-right': 'padding-bottom',\n 'marginRight': 'marginBottom'\n }[property];\n }\n\n function getDirectionPropertyValue(node, label) {\n return parseFloat(node.getPropertyValue(getDirectionLabel(label)) || 0);\n }\n\n const params = swiper.params;\n const {\n $wrapperEl,\n size: swiperSize,\n rtlTranslate: rtl,\n wrongRTL\n } = swiper;\n const isVirtual = swiper.virtual && params.virtual.enabled;\n const previousSlidesLength = isVirtual ? swiper.virtual.slides.length : swiper.slides.length;\n const slides = $wrapperEl.children(`.${swiper.params.slideClass}`);\n const slidesLength = isVirtual ? swiper.virtual.slides.length : slides.length;\n let snapGrid = [];\n const slidesGrid = [];\n const slidesSizesGrid = [];\n let offsetBefore = params.slidesOffsetBefore;\n\n if (typeof offsetBefore === 'function') {\n offsetBefore = params.slidesOffsetBefore.call(swiper);\n }\n\n let offsetAfter = params.slidesOffsetAfter;\n\n if (typeof offsetAfter === 'function') {\n offsetAfter = params.slidesOffsetAfter.call(swiper);\n }\n\n const previousSnapGridLength = swiper.snapGrid.length;\n const previousSlidesGridLength = swiper.slidesGrid.length;\n let spaceBetween = params.spaceBetween;\n let slidePosition = -offsetBefore;\n let prevSlideSize = 0;\n let index = 0;\n\n if (typeof swiperSize === 'undefined') {\n return;\n }\n\n if (typeof spaceBetween === 'string' && spaceBetween.indexOf('%') >= 0) {\n spaceBetween = parseFloat(spaceBetween.replace('%', '')) / 100 * swiperSize;\n }\n\n swiper.virtualSize = -spaceBetween; // reset margins\n\n if (rtl) slides.css({\n marginLeft: '',\n marginBottom: '',\n marginTop: ''\n });else slides.css({\n marginRight: '',\n marginBottom: '',\n marginTop: ''\n }); // reset cssMode offsets\n\n if (params.centeredSlides && params.cssMode) {\n setCSSProperty(swiper.wrapperEl, '--swiper-centered-offset-before', '');\n setCSSProperty(swiper.wrapperEl, '--swiper-centered-offset-after', '');\n }\n\n const gridEnabled = params.grid && params.grid.rows > 1 && swiper.grid;\n\n if (gridEnabled) {\n swiper.grid.initSlides(slidesLength);\n } // Calc slides\n\n\n let slideSize;\n const shouldResetSlideSize = params.slidesPerView === 'auto' && params.breakpoints && Object.keys(params.breakpoints).filter(key => {\n return typeof params.breakpoints[key].slidesPerView !== 'undefined';\n }).length > 0;\n\n for (let i = 0; i < slidesLength; i += 1) {\n slideSize = 0;\n const slide = slides.eq(i);\n\n if (gridEnabled) {\n swiper.grid.updateSlide(i, slide, slidesLength, getDirectionLabel);\n }\n\n if (slide.css('display') === 'none') continue; // eslint-disable-line\n\n if (params.slidesPerView === 'auto') {\n if (shouldResetSlideSize) {\n slides[i].style[getDirectionLabel('width')] = ``;\n }\n\n const slideStyles = getComputedStyle(slide[0]);\n const currentTransform = slide[0].style.transform;\n const currentWebKitTransform = slide[0].style.webkitTransform;\n\n if (currentTransform) {\n slide[0].style.transform = 'none';\n }\n\n if (currentWebKitTransform) {\n slide[0].style.webkitTransform = 'none';\n }\n\n if (params.roundLengths) {\n slideSize = swiper.isHorizontal() ? slide.outerWidth(true) : slide.outerHeight(true);\n } else {\n // eslint-disable-next-line\n const width = getDirectionPropertyValue(slideStyles, 'width');\n const paddingLeft = getDirectionPropertyValue(slideStyles, 'padding-left');\n const paddingRight = getDirectionPropertyValue(slideStyles, 'padding-right');\n const marginLeft = getDirectionPropertyValue(slideStyles, 'margin-left');\n const marginRight = getDirectionPropertyValue(slideStyles, 'margin-right');\n const boxSizing = slideStyles.getPropertyValue('box-sizing');\n\n if (boxSizing && boxSizing === 'border-box') {\n slideSize = width + marginLeft + marginRight;\n } else {\n const {\n clientWidth,\n offsetWidth\n } = slide[0];\n slideSize = width + paddingLeft + paddingRight + marginLeft + marginRight + (offsetWidth - clientWidth);\n }\n }\n\n if (currentTransform) {\n slide[0].style.transform = currentTransform;\n }\n\n if (currentWebKitTransform) {\n slide[0].style.webkitTransform = currentWebKitTransform;\n }\n\n if (params.roundLengths) slideSize = Math.floor(slideSize);\n } else {\n slideSize = (swiperSize - (params.slidesPerView - 1) * spaceBetween) / params.slidesPerView;\n if (params.roundLengths) slideSize = Math.floor(slideSize);\n\n if (slides[i]) {\n slides[i].style[getDirectionLabel('width')] = `${slideSize}px`;\n }\n }\n\n if (slides[i]) {\n slides[i].swiperSlideSize = slideSize;\n }\n\n slidesSizesGrid.push(slideSize);\n\n if (params.centeredSlides) {\n slidePosition = slidePosition + slideSize / 2 + prevSlideSize / 2 + spaceBetween;\n if (prevSlideSize === 0 && i !== 0) slidePosition = slidePosition - swiperSize / 2 - spaceBetween;\n if (i === 0) slidePosition = slidePosition - swiperSize / 2 - spaceBetween;\n if (Math.abs(slidePosition) < 1 / 1000) slidePosition = 0;\n if (params.roundLengths) slidePosition = Math.floor(slidePosition);\n if (index % params.slidesPerGroup === 0) snapGrid.push(slidePosition);\n slidesGrid.push(slidePosition);\n } else {\n if (params.roundLengths) slidePosition = Math.floor(slidePosition);\n if ((index - Math.min(swiper.params.slidesPerGroupSkip, index)) % swiper.params.slidesPerGroup === 0) snapGrid.push(slidePosition);\n slidesGrid.push(slidePosition);\n slidePosition = slidePosition + slideSize + spaceBetween;\n }\n\n swiper.virtualSize += slideSize + spaceBetween;\n prevSlideSize = slideSize;\n index += 1;\n }\n\n swiper.virtualSize = Math.max(swiper.virtualSize, swiperSize) + offsetAfter;\n\n if (rtl && wrongRTL && (params.effect === 'slide' || params.effect === 'coverflow')) {\n $wrapperEl.css({\n width: `${swiper.virtualSize + params.spaceBetween}px`\n });\n }\n\n if (params.setWrapperSize) {\n $wrapperEl.css({\n [getDirectionLabel('width')]: `${swiper.virtualSize + params.spaceBetween}px`\n });\n }\n\n if (gridEnabled) {\n swiper.grid.updateWrapperSize(slideSize, snapGrid, getDirectionLabel);\n } // Remove last grid elements depending on width\n\n\n if (!params.centeredSlides) {\n const newSlidesGrid = [];\n\n for (let i = 0; i < snapGrid.length; i += 1) {\n let slidesGridItem = snapGrid[i];\n if (params.roundLengths) slidesGridItem = Math.floor(slidesGridItem);\n\n if (snapGrid[i] <= swiper.virtualSize - swiperSize) {\n newSlidesGrid.push(slidesGridItem);\n }\n }\n\n snapGrid = newSlidesGrid;\n\n if (Math.floor(swiper.virtualSize - swiperSize) - Math.floor(snapGrid[snapGrid.length - 1]) > 1) {\n snapGrid.push(swiper.virtualSize - swiperSize);\n }\n }\n\n if (snapGrid.length === 0) snapGrid = [0];\n\n if (params.spaceBetween !== 0) {\n const key = swiper.isHorizontal() && rtl ? 'marginLeft' : getDirectionLabel('marginRight');\n slides.filter((_, slideIndex) => {\n if (!params.cssMode) return true;\n\n if (slideIndex === slides.length - 1) {\n return false;\n }\n\n return true;\n }).css({\n [key]: `${spaceBetween}px`\n });\n }\n\n if (params.centeredSlides && params.centeredSlidesBounds) {\n let allSlidesSize = 0;\n slidesSizesGrid.forEach(slideSizeValue => {\n allSlidesSize += slideSizeValue + (params.spaceBetween ? params.spaceBetween : 0);\n });\n allSlidesSize -= params.spaceBetween;\n const maxSnap = allSlidesSize - swiperSize;\n snapGrid = snapGrid.map(snap => {\n if (snap < 0) return -offsetBefore;\n if (snap > maxSnap) return maxSnap + offsetAfter;\n return snap;\n });\n }\n\n if (params.centerInsufficientSlides) {\n let allSlidesSize = 0;\n slidesSizesGrid.forEach(slideSizeValue => {\n allSlidesSize += slideSizeValue + (params.spaceBetween ? params.spaceBetween : 0);\n });\n allSlidesSize -= params.spaceBetween;\n\n if (allSlidesSize < swiperSize) {\n const allSlidesOffset = (swiperSize - allSlidesSize) / 2;\n snapGrid.forEach((snap, snapIndex) => {\n snapGrid[snapIndex] = snap - allSlidesOffset;\n });\n slidesGrid.forEach((snap, snapIndex) => {\n slidesGrid[snapIndex] = snap + allSlidesOffset;\n });\n }\n }\n\n Object.assign(swiper, {\n slides,\n snapGrid,\n slidesGrid,\n slidesSizesGrid\n });\n\n if (params.centeredSlides && params.cssMode && !params.centeredSlidesBounds) {\n setCSSProperty(swiper.wrapperEl, '--swiper-centered-offset-before', `${-snapGrid[0]}px`);\n setCSSProperty(swiper.wrapperEl, '--swiper-centered-offset-after', `${swiper.size / 2 - slidesSizesGrid[slidesSizesGrid.length - 1] / 2}px`);\n const addToSnapGrid = -swiper.snapGrid[0];\n const addToSlidesGrid = -swiper.slidesGrid[0];\n swiper.snapGrid = swiper.snapGrid.map(v => v + addToSnapGrid);\n swiper.slidesGrid = swiper.slidesGrid.map(v => v + addToSlidesGrid);\n }\n\n if (slidesLength !== previousSlidesLength) {\n swiper.emit('slidesLengthChange');\n }\n\n if (snapGrid.length !== previousSnapGridLength) {\n if (swiper.params.watchOverflow) swiper.checkOverflow();\n swiper.emit('snapGridLengthChange');\n }\n\n if (slidesGrid.length !== previousSlidesGridLength) {\n swiper.emit('slidesGridLengthChange');\n }\n\n if (params.watchSlidesProgress) {\n swiper.updateSlidesOffset();\n }\n}","export default function updateSlidesClasses() {\n const swiper = this;\n const {\n slides,\n params,\n $wrapperEl,\n activeIndex,\n realIndex\n } = swiper;\n const isVirtual = swiper.virtual && params.virtual.enabled;\n slides.removeClass(`${params.slideActiveClass} ${params.slideNextClass} ${params.slidePrevClass} ${params.slideDuplicateActiveClass} ${params.slideDuplicateNextClass} ${params.slideDuplicatePrevClass}`);\n let activeSlide;\n\n if (isVirtual) {\n activeSlide = swiper.$wrapperEl.find(`.${params.slideClass}[data-swiper-slide-index=\"${activeIndex}\"]`);\n } else {\n activeSlide = slides.eq(activeIndex);\n } // Active classes\n\n\n activeSlide.addClass(params.slideActiveClass);\n\n if (params.loop) {\n // Duplicate to all looped slides\n if (activeSlide.hasClass(params.slideDuplicateClass)) {\n $wrapperEl.children(`.${params.slideClass}:not(.${params.slideDuplicateClass})[data-swiper-slide-index=\"${realIndex}\"]`).addClass(params.slideDuplicateActiveClass);\n } else {\n $wrapperEl.children(`.${params.slideClass}.${params.slideDuplicateClass}[data-swiper-slide-index=\"${realIndex}\"]`).addClass(params.slideDuplicateActiveClass);\n }\n } // Next Slide\n\n\n let nextSlide = activeSlide.nextAll(`.${params.slideClass}`).eq(0).addClass(params.slideNextClass);\n\n if (params.loop && nextSlide.length === 0) {\n nextSlide = slides.eq(0);\n nextSlide.addClass(params.slideNextClass);\n } // Prev Slide\n\n\n let prevSlide = activeSlide.prevAll(`.${params.slideClass}`).eq(0).addClass(params.slidePrevClass);\n\n if (params.loop && prevSlide.length === 0) {\n prevSlide = slides.eq(-1);\n prevSlide.addClass(params.slidePrevClass);\n }\n\n if (params.loop) {\n // Duplicate to all looped slides\n if (nextSlide.hasClass(params.slideDuplicateClass)) {\n $wrapperEl.children(`.${params.slideClass}:not(.${params.slideDuplicateClass})[data-swiper-slide-index=\"${nextSlide.attr('data-swiper-slide-index')}\"]`).addClass(params.slideDuplicateNextClass);\n } else {\n $wrapperEl.children(`.${params.slideClass}.${params.slideDuplicateClass}[data-swiper-slide-index=\"${nextSlide.attr('data-swiper-slide-index')}\"]`).addClass(params.slideDuplicateNextClass);\n }\n\n if (prevSlide.hasClass(params.slideDuplicateClass)) {\n $wrapperEl.children(`.${params.slideClass}:not(.${params.slideDuplicateClass})[data-swiper-slide-index=\"${prevSlide.attr('data-swiper-slide-index')}\"]`).addClass(params.slideDuplicatePrevClass);\n } else {\n $wrapperEl.children(`.${params.slideClass}.${params.slideDuplicateClass}[data-swiper-slide-index=\"${prevSlide.attr('data-swiper-slide-index')}\"]`).addClass(params.slideDuplicatePrevClass);\n }\n }\n\n swiper.emitSlidesClasses();\n}","export default function updateSlidesOffset() {\n const swiper = this;\n const slides = swiper.slides;\n\n for (let i = 0; i < slides.length; i += 1) {\n slides[i].swiperSlideOffset = swiper.isHorizontal() ? slides[i].offsetLeft : slides[i].offsetTop;\n }\n}","import $ from '../../shared/dom.js';\nexport default function updateSlidesProgress(translate = this && this.translate || 0) {\n const swiper = this;\n const params = swiper.params;\n const {\n slides,\n rtlTranslate: rtl,\n snapGrid\n } = swiper;\n if (slides.length === 0) return;\n if (typeof slides[0].swiperSlideOffset === 'undefined') swiper.updateSlidesOffset();\n let offsetCenter = -translate;\n if (rtl) offsetCenter = translate; // Visible Slides\n\n slides.removeClass(params.slideVisibleClass);\n swiper.visibleSlidesIndexes = [];\n swiper.visibleSlides = [];\n\n for (let i = 0; i < slides.length; i += 1) {\n const slide = slides[i];\n let slideOffset = slide.swiperSlideOffset;\n\n if (params.cssMode && params.centeredSlides) {\n slideOffset -= slides[0].swiperSlideOffset;\n }\n\n const slideProgress = (offsetCenter + (params.centeredSlides ? swiper.minTranslate() : 0) - slideOffset) / (slide.swiperSlideSize + params.spaceBetween);\n const originalSlideProgress = (offsetCenter - snapGrid[0] + (params.centeredSlides ? swiper.minTranslate() : 0) - slideOffset) / (slide.swiperSlideSize + params.spaceBetween);\n const slideBefore = -(offsetCenter - slideOffset);\n const slideAfter = slideBefore + swiper.slidesSizesGrid[i];\n const isVisible = slideBefore >= 0 && slideBefore < swiper.size - 1 || slideAfter > 1 && slideAfter <= swiper.size || slideBefore <= 0 && slideAfter >= swiper.size;\n\n if (isVisible) {\n swiper.visibleSlides.push(slide);\n swiper.visibleSlidesIndexes.push(i);\n slides.eq(i).addClass(params.slideVisibleClass);\n }\n\n slide.progress = rtl ? -slideProgress : slideProgress;\n slide.originalProgress = rtl ? -originalSlideProgress : originalSlideProgress;\n }\n\n swiper.visibleSlides = $(swiper.visibleSlides);\n}","import classesToSelector from '../../shared/classes-to-selector.js';\nimport $ from '../../shared/dom.js';\nexport default function A11y({\n swiper,\n extendParams,\n on\n}) {\n extendParams({\n a11y: {\n enabled: true,\n notificationClass: 'swiper-notification',\n prevSlideMessage: 'Previous slide',\n nextSlideMessage: 'Next slide',\n firstSlideMessage: 'This is the first slide',\n lastSlideMessage: 'This is the last slide',\n paginationBulletMessage: 'Go to slide {{index}}',\n slideLabelMessage: '{{index}} / {{slidesLength}}',\n containerMessage: null,\n containerRoleDescriptionMessage: null,\n itemRoleDescriptionMessage: null,\n slideRole: 'group'\n }\n });\n let liveRegion = null;\n\n function notify(message) {\n const notification = liveRegion;\n if (notification.length === 0) return;\n notification.html('');\n notification.html(message);\n }\n\n function getRandomNumber(size = 16) {\n const randomChar = () => Math.round(16 * Math.random()).toString(16);\n\n return 'x'.repeat(size).replace(/x/g, randomChar);\n }\n\n function makeElFocusable($el) {\n $el.attr('tabIndex', '0');\n }\n\n function makeElNotFocusable($el) {\n $el.attr('tabIndex', '-1');\n }\n\n function addElRole($el, role) {\n $el.attr('role', role);\n }\n\n function addElRoleDescription($el, description) {\n $el.attr('aria-roledescription', description);\n }\n\n function addElControls($el, controls) {\n $el.attr('aria-controls', controls);\n }\n\n function addElLabel($el, label) {\n $el.attr('aria-label', label);\n }\n\n function addElId($el, id) {\n $el.attr('id', id);\n }\n\n function addElLive($el, live) {\n $el.attr('aria-live', live);\n }\n\n function disableEl($el) {\n $el.attr('aria-disabled', true);\n }\n\n function enableEl($el) {\n $el.attr('aria-disabled', false);\n }\n\n function onEnterOrSpaceKey(e) {\n if (e.keyCode !== 13 && e.keyCode !== 32) return;\n const params = swiper.params.a11y;\n const $targetEl = $(e.target);\n\n if (swiper.navigation && swiper.navigation.$nextEl && $targetEl.is(swiper.navigation.$nextEl)) {\n if (!(swiper.isEnd && !swiper.params.loop)) {\n swiper.slideNext();\n }\n\n if (swiper.isEnd) {\n notify(params.lastSlideMessage);\n } else {\n notify(params.nextSlideMessage);\n }\n }\n\n if (swiper.navigation && swiper.navigation.$prevEl && $targetEl.is(swiper.navigation.$prevEl)) {\n if (!(swiper.isBeginning && !swiper.params.loop)) {\n swiper.slidePrev();\n }\n\n if (swiper.isBeginning) {\n notify(params.firstSlideMessage);\n } else {\n notify(params.prevSlideMessage);\n }\n }\n\n if (swiper.pagination && $targetEl.is(classesToSelector(swiper.params.pagination.bulletClass))) {\n $targetEl[0].click();\n }\n }\n\n function updateNavigation() {\n if (swiper.params.loop || swiper.params.rewind || !swiper.navigation) return;\n const {\n $nextEl,\n $prevEl\n } = swiper.navigation;\n\n if ($prevEl && $prevEl.length > 0) {\n if (swiper.isBeginning) {\n disableEl($prevEl);\n makeElNotFocusable($prevEl);\n } else {\n enableEl($prevEl);\n makeElFocusable($prevEl);\n }\n }\n\n if ($nextEl && $nextEl.length > 0) {\n if (swiper.isEnd) {\n disableEl($nextEl);\n makeElNotFocusable($nextEl);\n } else {\n enableEl($nextEl);\n makeElFocusable($nextEl);\n }\n }\n }\n\n function hasPagination() {\n return swiper.pagination && swiper.pagination.bullets && swiper.pagination.bullets.length;\n }\n\n function hasClickablePagination() {\n return hasPagination() && swiper.params.pagination.clickable;\n }\n\n function updatePagination() {\n const params = swiper.params.a11y;\n if (!hasPagination()) return;\n swiper.pagination.bullets.each(bulletEl => {\n const $bulletEl = $(bulletEl);\n\n if (swiper.params.pagination.clickable) {\n makeElFocusable($bulletEl);\n\n if (!swiper.params.pagination.renderBullet) {\n addElRole($bulletEl, 'button');\n addElLabel($bulletEl, params.paginationBulletMessage.replace(/\\{\\{index\\}\\}/, $bulletEl.index() + 1));\n }\n }\n\n if ($bulletEl.is(`.${swiper.params.pagination.bulletActiveClass}`)) {\n $bulletEl.attr('aria-current', 'true');\n } else {\n $bulletEl.removeAttr('aria-current');\n }\n });\n }\n\n const initNavEl = ($el, wrapperId, message) => {\n makeElFocusable($el);\n\n if ($el[0].tagName !== 'BUTTON') {\n addElRole($el, 'button');\n $el.on('keydown', onEnterOrSpaceKey);\n }\n\n addElLabel($el, message);\n addElControls($el, wrapperId);\n };\n\n function init() {\n const params = swiper.params.a11y;\n swiper.$el.append(liveRegion); // Container\n\n const $containerEl = swiper.$el;\n\n if (params.containerRoleDescriptionMessage) {\n addElRoleDescription($containerEl, params.containerRoleDescriptionMessage);\n }\n\n if (params.containerMessage) {\n addElLabel($containerEl, params.containerMessage);\n } // Wrapper\n\n\n const $wrapperEl = swiper.$wrapperEl;\n const wrapperId = $wrapperEl.attr('id') || `swiper-wrapper-${getRandomNumber(16)}`;\n const live = swiper.params.autoplay && swiper.params.autoplay.enabled ? 'off' : 'polite';\n addElId($wrapperEl, wrapperId);\n addElLive($wrapperEl, live); // Slide\n\n if (params.itemRoleDescriptionMessage) {\n addElRoleDescription($(swiper.slides), params.itemRoleDescriptionMessage);\n }\n\n addElRole($(swiper.slides), params.slideRole);\n const slidesLength = swiper.params.loop ? swiper.slides.filter(el => !el.classList.contains(swiper.params.slideDuplicateClass)).length : swiper.slides.length;\n swiper.slides.each((slideEl, index) => {\n const $slideEl = $(slideEl);\n const slideIndex = swiper.params.loop ? parseInt($slideEl.attr('data-swiper-slide-index'), 10) : index;\n const ariaLabelMessage = params.slideLabelMessage.replace(/\\{\\{index\\}\\}/, slideIndex + 1).replace(/\\{\\{slidesLength\\}\\}/, slidesLength);\n addElLabel($slideEl, ariaLabelMessage);\n }); // Navigation\n\n let $nextEl;\n let $prevEl;\n\n if (swiper.navigation && swiper.navigation.$nextEl) {\n $nextEl = swiper.navigation.$nextEl;\n }\n\n if (swiper.navigation && swiper.navigation.$prevEl) {\n $prevEl = swiper.navigation.$prevEl;\n }\n\n if ($nextEl && $nextEl.length) {\n initNavEl($nextEl, wrapperId, params.nextSlideMessage);\n }\n\n if ($prevEl && $prevEl.length) {\n initNavEl($prevEl, wrapperId, params.prevSlideMessage);\n } // Pagination\n\n\n if (hasClickablePagination()) {\n swiper.pagination.$el.on('keydown', classesToSelector(swiper.params.pagination.bulletClass), onEnterOrSpaceKey);\n }\n }\n\n function destroy() {\n if (liveRegion && liveRegion.length > 0) liveRegion.remove();\n let $nextEl;\n let $prevEl;\n\n if (swiper.navigation && swiper.navigation.$nextEl) {\n $nextEl = swiper.navigation.$nextEl;\n }\n\n if (swiper.navigation && swiper.navigation.$prevEl) {\n $prevEl = swiper.navigation.$prevEl;\n }\n\n if ($nextEl) {\n $nextEl.off('keydown', onEnterOrSpaceKey);\n }\n\n if ($prevEl) {\n $prevEl.off('keydown', onEnterOrSpaceKey);\n } // Pagination\n\n\n if (hasClickablePagination()) {\n swiper.pagination.$el.off('keydown', classesToSelector(swiper.params.pagination.bulletClass), onEnterOrSpaceKey);\n }\n }\n\n on('beforeInit', () => {\n liveRegion = $(``);\n });\n on('afterInit', () => {\n if (!swiper.params.a11y.enabled) return;\n init();\n updateNavigation();\n });\n on('toEdge', () => {\n if (!swiper.params.a11y.enabled) return;\n updateNavigation();\n });\n on('fromEdge', () => {\n if (!swiper.params.a11y.enabled) return;\n updateNavigation();\n });\n on('paginationUpdate', () => {\n if (!swiper.params.a11y.enabled) return;\n updatePagination();\n });\n on('destroy', () => {\n if (!swiper.params.a11y.enabled) return;\n destroy();\n });\n}","/* eslint no-underscore-dangle: \"off\" */\n\n/* eslint no-use-before-define: \"off\" */\nimport { getDocument } from 'ssr-window';\nimport { nextTick } from '../../shared/utils.js';\nexport default function Autoplay({\n swiper,\n extendParams,\n on,\n emit\n}) {\n let timeout;\n swiper.autoplay = {\n running: false,\n paused: false\n };\n extendParams({\n autoplay: {\n enabled: false,\n delay: 3000,\n waitForTransition: true,\n disableOnInteraction: true,\n stopOnLastSlide: false,\n reverseDirection: false,\n pauseOnMouseEnter: false\n }\n });\n\n function run() {\n const $activeSlideEl = swiper.slides.eq(swiper.activeIndex);\n let delay = swiper.params.autoplay.delay;\n\n if ($activeSlideEl.attr('data-swiper-autoplay')) {\n delay = $activeSlideEl.attr('data-swiper-autoplay') || swiper.params.autoplay.delay;\n }\n\n clearTimeout(timeout);\n timeout = nextTick(() => {\n let autoplayResult;\n\n if (swiper.params.autoplay.reverseDirection) {\n if (swiper.params.loop) {\n swiper.loopFix();\n autoplayResult = swiper.slidePrev(swiper.params.speed, true, true);\n emit('autoplay');\n } else if (!swiper.isBeginning) {\n autoplayResult = swiper.slidePrev(swiper.params.speed, true, true);\n emit('autoplay');\n } else if (!swiper.params.autoplay.stopOnLastSlide) {\n autoplayResult = swiper.slideTo(swiper.slides.length - 1, swiper.params.speed, true, true);\n emit('autoplay');\n } else {\n stop();\n }\n } else if (swiper.params.loop) {\n swiper.loopFix();\n autoplayResult = swiper.slideNext(swiper.params.speed, true, true);\n emit('autoplay');\n } else if (!swiper.isEnd) {\n autoplayResult = swiper.slideNext(swiper.params.speed, true, true);\n emit('autoplay');\n } else if (!swiper.params.autoplay.stopOnLastSlide) {\n autoplayResult = swiper.slideTo(0, swiper.params.speed, true, true);\n emit('autoplay');\n } else {\n stop();\n }\n\n if (swiper.params.cssMode && swiper.autoplay.running) run();else if (autoplayResult === false) {\n run();\n }\n }, delay);\n }\n\n function start() {\n if (typeof timeout !== 'undefined') return false;\n if (swiper.autoplay.running) return false;\n swiper.autoplay.running = true;\n emit('autoplayStart');\n run();\n return true;\n }\n\n function stop() {\n if (!swiper.autoplay.running) return false;\n if (typeof timeout === 'undefined') return false;\n\n if (timeout) {\n clearTimeout(timeout);\n timeout = undefined;\n }\n\n swiper.autoplay.running = false;\n emit('autoplayStop');\n return true;\n }\n\n function pause(speed) {\n if (!swiper.autoplay.running) return;\n if (swiper.autoplay.paused) return;\n if (timeout) clearTimeout(timeout);\n swiper.autoplay.paused = true;\n\n if (speed === 0 || !swiper.params.autoplay.waitForTransition) {\n swiper.autoplay.paused = false;\n run();\n } else {\n ['transitionend', 'webkitTransitionEnd'].forEach(event => {\n swiper.$wrapperEl[0].addEventListener(event, onTransitionEnd);\n });\n }\n }\n\n function onVisibilityChange() {\n const document = getDocument();\n\n if (document.visibilityState === 'hidden' && swiper.autoplay.running) {\n pause();\n }\n\n if (document.visibilityState === 'visible' && swiper.autoplay.paused) {\n run();\n swiper.autoplay.paused = false;\n }\n }\n\n function onTransitionEnd(e) {\n if (!swiper || swiper.destroyed || !swiper.$wrapperEl) return;\n if (e.target !== swiper.$wrapperEl[0]) return;\n ['transitionend', 'webkitTransitionEnd'].forEach(event => {\n swiper.$wrapperEl[0].removeEventListener(event, onTransitionEnd);\n });\n swiper.autoplay.paused = false;\n\n if (!swiper.autoplay.running) {\n stop();\n } else {\n run();\n }\n }\n\n function onMouseEnter() {\n if (swiper.params.autoplay.disableOnInteraction) {\n stop();\n } else {\n pause();\n }\n\n ['transitionend', 'webkitTransitionEnd'].forEach(event => {\n swiper.$wrapperEl[0].removeEventListener(event, onTransitionEnd);\n });\n }\n\n function onMouseLeave() {\n if (swiper.params.autoplay.disableOnInteraction) {\n return;\n }\n\n swiper.autoplay.paused = false;\n run();\n }\n\n function attachMouseEvents() {\n if (swiper.params.autoplay.pauseOnMouseEnter) {\n swiper.$el.on('mouseenter', onMouseEnter);\n swiper.$el.on('mouseleave', onMouseLeave);\n }\n }\n\n function detachMouseEvents() {\n swiper.$el.off('mouseenter', onMouseEnter);\n swiper.$el.off('mouseleave', onMouseLeave);\n }\n\n on('init', () => {\n if (swiper.params.autoplay.enabled) {\n start();\n const document = getDocument();\n document.addEventListener('visibilitychange', onVisibilityChange);\n attachMouseEvents();\n }\n });\n on('beforeTransitionStart', (_s, speed, internal) => {\n if (swiper.autoplay.running) {\n if (internal || !swiper.params.autoplay.disableOnInteraction) {\n swiper.autoplay.pause(speed);\n } else {\n stop();\n }\n }\n });\n on('sliderFirstMove', () => {\n if (swiper.autoplay.running) {\n if (swiper.params.autoplay.disableOnInteraction) {\n stop();\n } else {\n pause();\n }\n }\n });\n on('touchEnd', () => {\n if (swiper.params.cssMode && swiper.autoplay.paused && !swiper.params.autoplay.disableOnInteraction) {\n run();\n }\n });\n on('destroy', () => {\n detachMouseEvents();\n\n if (swiper.autoplay.running) {\n stop();\n }\n\n const document = getDocument();\n document.removeEventListener('visibilitychange', onVisibilityChange);\n });\n Object.assign(swiper.autoplay, {\n pause,\n run,\n start,\n stop\n });\n}","/* eslint no-bitwise: [\"error\", { \"allow\": [\">>\"] }] */\nimport { nextTick } from '../../shared/utils.js';\nexport default function Controller({\n swiper,\n extendParams,\n on\n}) {\n extendParams({\n controller: {\n control: undefined,\n inverse: false,\n by: 'slide' // or 'container'\n\n }\n });\n swiper.controller = {\n control: undefined\n };\n\n function LinearSpline(x, y) {\n const binarySearch = function search() {\n let maxIndex;\n let minIndex;\n let guess;\n return (array, val) => {\n minIndex = -1;\n maxIndex = array.length;\n\n while (maxIndex - minIndex > 1) {\n guess = maxIndex + minIndex >> 1;\n\n if (array[guess] <= val) {\n minIndex = guess;\n } else {\n maxIndex = guess;\n }\n }\n\n return maxIndex;\n };\n }();\n\n this.x = x;\n this.y = y;\n this.lastIndex = x.length - 1; // Given an x value (x2), return the expected y2 value:\n // (x1,y1) is the known point before given value,\n // (x3,y3) is the known point after given value.\n\n let i1;\n let i3;\n\n this.interpolate = function interpolate(x2) {\n if (!x2) return 0; // Get the indexes of x1 and x3 (the array indexes before and after given x2):\n\n i3 = binarySearch(this.x, x2);\n i1 = i3 - 1; // We have our indexes i1 & i3, so we can calculate already:\n // y2 := ((x2−x1) × (y3−y1)) ÷ (x3−x1) + y1\n\n return (x2 - this.x[i1]) * (this.y[i3] - this.y[i1]) / (this.x[i3] - this.x[i1]) + this.y[i1];\n };\n\n return this;\n } // xxx: for now i will just save one spline function to to\n\n\n function getInterpolateFunction(c) {\n if (!swiper.controller.spline) {\n swiper.controller.spline = swiper.params.loop ? new LinearSpline(swiper.slidesGrid, c.slidesGrid) : new LinearSpline(swiper.snapGrid, c.snapGrid);\n }\n }\n\n function setTranslate(_t, byController) {\n const controlled = swiper.controller.control;\n let multiplier;\n let controlledTranslate;\n const Swiper = swiper.constructor;\n\n function setControlledTranslate(c) {\n // this will create an Interpolate function based on the snapGrids\n // x is the Grid of the scrolled scroller and y will be the controlled scroller\n // it makes sense to create this only once and recall it for the interpolation\n // the function does a lot of value caching for performance\n const translate = swiper.rtlTranslate ? -swiper.translate : swiper.translate;\n\n if (swiper.params.controller.by === 'slide') {\n getInterpolateFunction(c); // i am not sure why the values have to be multiplicated this way, tried to invert the snapGrid\n // but it did not work out\n\n controlledTranslate = -swiper.controller.spline.interpolate(-translate);\n }\n\n if (!controlledTranslate || swiper.params.controller.by === 'container') {\n multiplier = (c.maxTranslate() - c.minTranslate()) / (swiper.maxTranslate() - swiper.minTranslate());\n controlledTranslate = (translate - swiper.minTranslate()) * multiplier + c.minTranslate();\n }\n\n if (swiper.params.controller.inverse) {\n controlledTranslate = c.maxTranslate() - controlledTranslate;\n }\n\n c.updateProgress(controlledTranslate);\n c.setTranslate(controlledTranslate, swiper);\n c.updateActiveIndex();\n c.updateSlidesClasses();\n }\n\n if (Array.isArray(controlled)) {\n for (let i = 0; i < controlled.length; i += 1) {\n if (controlled[i] !== byController && controlled[i] instanceof Swiper) {\n setControlledTranslate(controlled[i]);\n }\n }\n } else if (controlled instanceof Swiper && byController !== controlled) {\n setControlledTranslate(controlled);\n }\n }\n\n function setTransition(duration, byController) {\n const Swiper = swiper.constructor;\n const controlled = swiper.controller.control;\n let i;\n\n function setControlledTransition(c) {\n c.setTransition(duration, swiper);\n\n if (duration !== 0) {\n c.transitionStart();\n\n if (c.params.autoHeight) {\n nextTick(() => {\n c.updateAutoHeight();\n });\n }\n\n c.$wrapperEl.transitionEnd(() => {\n if (!controlled) return;\n\n if (c.params.loop && swiper.params.controller.by === 'slide') {\n c.loopFix();\n }\n\n c.transitionEnd();\n });\n }\n }\n\n if (Array.isArray(controlled)) {\n for (i = 0; i < controlled.length; i += 1) {\n if (controlled[i] !== byController && controlled[i] instanceof Swiper) {\n setControlledTransition(controlled[i]);\n }\n }\n } else if (controlled instanceof Swiper && byController !== controlled) {\n setControlledTransition(controlled);\n }\n }\n\n function removeSpline() {\n if (!swiper.controller.control) return;\n\n if (swiper.controller.spline) {\n swiper.controller.spline = undefined;\n delete swiper.controller.spline;\n }\n }\n\n on('beforeInit', () => {\n swiper.controller.control = swiper.params.controller.control;\n });\n on('update', () => {\n removeSpline();\n });\n on('resize', () => {\n removeSpline();\n });\n on('observerUpdate', () => {\n removeSpline();\n });\n on('setTranslate', (_s, translate, byController) => {\n if (!swiper.controller.control) return;\n swiper.controller.setTranslate(translate, byController);\n });\n on('setTransition', (_s, duration, byController) => {\n if (!swiper.controller.control) return;\n swiper.controller.setTransition(duration, byController);\n });\n Object.assign(swiper.controller, {\n setTranslate,\n setTransition\n });\n}","import createShadow from '../../shared/create-shadow.js';\nimport effectInit from '../../shared/effect-init.js';\nimport effectTarget from '../../shared/effect-target.js';\nimport effectVirtualTransitionEnd from '../../shared/effect-virtual-transition-end.js';\nexport default function EffectCards({\n swiper,\n extendParams,\n on\n}) {\n extendParams({\n cardsEffect: {\n slideShadows: true,\n transformEl: null\n }\n });\n\n const setTranslate = () => {\n const {\n slides,\n activeIndex\n } = swiper;\n const params = swiper.params.cardsEffect;\n const {\n startTranslate,\n isTouched\n } = swiper.touchEventsData;\n const currentTranslate = swiper.translate;\n\n for (let i = 0; i < slides.length; i += 1) {\n const $slideEl = slides.eq(i);\n const slideProgress = $slideEl[0].progress;\n const progress = Math.min(Math.max(slideProgress, -4), 4);\n let offset = $slideEl[0].swiperSlideOffset;\n\n if (swiper.params.centeredSlides && !swiper.params.cssMode) {\n swiper.$wrapperEl.transform(`translateX(${swiper.minTranslate()}px)`);\n }\n\n if (swiper.params.centeredSlides && swiper.params.cssMode) {\n offset -= slides[0].swiperSlideOffset;\n }\n\n let tX = swiper.params.cssMode ? -offset - swiper.translate : -offset;\n let tY = 0;\n const tZ = -100 * Math.abs(progress);\n let scale = 1;\n let rotate = -2 * progress;\n let tXAdd = 8 - Math.abs(progress) * 0.75;\n const isSwipeToNext = (i === activeIndex || i === activeIndex - 1) && progress > 0 && progress < 1 && (isTouched || swiper.params.cssMode) && currentTranslate < startTranslate;\n const isSwipeToPrev = (i === activeIndex || i === activeIndex + 1) && progress < 0 && progress > -1 && (isTouched || swiper.params.cssMode) && currentTranslate > startTranslate;\n\n if (isSwipeToNext || isSwipeToPrev) {\n const subProgress = (1 - Math.abs((Math.abs(progress) - 0.5) / 0.5)) ** 0.5;\n rotate += -28 * progress * subProgress;\n scale += -0.5 * subProgress;\n tXAdd += 96 * subProgress;\n tY = `${-25 * subProgress * Math.abs(progress)}%`;\n }\n\n if (progress < 0) {\n // next\n tX = `calc(${tX}px + (${tXAdd * Math.abs(progress)}%))`;\n } else if (progress > 0) {\n // prev\n tX = `calc(${tX}px + (-${tXAdd * Math.abs(progress)}%))`;\n } else {\n tX = `${tX}px`;\n }\n\n if (!swiper.isHorizontal()) {\n const prevY = tY;\n tY = tX;\n tX = prevY;\n }\n\n const scaleString = progress < 0 ? `${1 + (1 - scale) * progress}` : `${1 - (1 - scale) * progress}`;\n const transform = `\n translate3d(${tX}, ${tY}, ${tZ}px)\n rotateZ(${rotate}deg)\n scale(${scaleString})\n `;\n\n if (params.slideShadows) {\n // Set shadows\n let $shadowEl = $slideEl.find('.swiper-slide-shadow');\n\n if ($shadowEl.length === 0) {\n $shadowEl = createShadow(params, $slideEl);\n }\n\n if ($shadowEl.length) $shadowEl[0].style.opacity = Math.min(Math.max((Math.abs(progress) - 0.5) / 0.5, 0), 1);\n }\n\n $slideEl[0].style.zIndex = -Math.abs(Math.round(slideProgress)) + slides.length;\n const $targetEl = effectTarget(params, $slideEl);\n $targetEl.transform(transform);\n }\n };\n\n const setTransition = duration => {\n const {\n transformEl\n } = swiper.params.cardsEffect;\n const $transitionElements = transformEl ? swiper.slides.find(transformEl) : swiper.slides;\n $transitionElements.transition(duration).find('.swiper-slide-shadow').transition(duration);\n effectVirtualTransitionEnd({\n swiper,\n duration,\n transformEl\n });\n };\n\n effectInit({\n effect: 'cards',\n swiper,\n on,\n setTranslate,\n setTransition,\n perspective: () => true,\n overwriteParams: () => ({\n watchSlidesProgress: true,\n virtualTranslate: !swiper.params.cssMode\n })\n });\n}","import createShadow from '../../shared/create-shadow.js';\nimport effectInit from '../../shared/effect-init.js';\nimport effectTarget from '../../shared/effect-target.js';\nexport default function EffectCoverflow({\n swiper,\n extendParams,\n on\n}) {\n extendParams({\n coverflowEffect: {\n rotate: 50,\n stretch: 0,\n depth: 100,\n scale: 1,\n modifier: 1,\n slideShadows: true,\n transformEl: null\n }\n });\n\n const setTranslate = () => {\n const {\n width: swiperWidth,\n height: swiperHeight,\n slides,\n slidesSizesGrid\n } = swiper;\n const params = swiper.params.coverflowEffect;\n const isHorizontal = swiper.isHorizontal();\n const transform = swiper.translate;\n const center = isHorizontal ? -transform + swiperWidth / 2 : -transform + swiperHeight / 2;\n const rotate = isHorizontal ? params.rotate : -params.rotate;\n const translate = params.depth; // Each slide offset from center\n\n for (let i = 0, length = slides.length; i < length; i += 1) {\n const $slideEl = slides.eq(i);\n const slideSize = slidesSizesGrid[i];\n const slideOffset = $slideEl[0].swiperSlideOffset;\n const offsetMultiplier = (center - slideOffset - slideSize / 2) / slideSize * params.modifier;\n let rotateY = isHorizontal ? rotate * offsetMultiplier : 0;\n let rotateX = isHorizontal ? 0 : rotate * offsetMultiplier; // var rotateZ = 0\n\n let translateZ = -translate * Math.abs(offsetMultiplier);\n let stretch = params.stretch; // Allow percentage to make a relative stretch for responsive sliders\n\n if (typeof stretch === 'string' && stretch.indexOf('%') !== -1) {\n stretch = parseFloat(params.stretch) / 100 * slideSize;\n }\n\n let translateY = isHorizontal ? 0 : stretch * offsetMultiplier;\n let translateX = isHorizontal ? stretch * offsetMultiplier : 0;\n let scale = 1 - (1 - params.scale) * Math.abs(offsetMultiplier); // Fix for ultra small values\n\n if (Math.abs(translateX) < 0.001) translateX = 0;\n if (Math.abs(translateY) < 0.001) translateY = 0;\n if (Math.abs(translateZ) < 0.001) translateZ = 0;\n if (Math.abs(rotateY) < 0.001) rotateY = 0;\n if (Math.abs(rotateX) < 0.001) rotateX = 0;\n if (Math.abs(scale) < 0.001) scale = 0;\n const slideTransform = `translate3d(${translateX}px,${translateY}px,${translateZ}px) rotateX(${rotateX}deg) rotateY(${rotateY}deg) scale(${scale})`;\n const $targetEl = effectTarget(params, $slideEl);\n $targetEl.transform(slideTransform);\n $slideEl[0].style.zIndex = -Math.abs(Math.round(offsetMultiplier)) + 1;\n\n if (params.slideShadows) {\n // Set shadows\n let $shadowBeforeEl = isHorizontal ? $slideEl.find('.swiper-slide-shadow-left') : $slideEl.find('.swiper-slide-shadow-top');\n let $shadowAfterEl = isHorizontal ? $slideEl.find('.swiper-slide-shadow-right') : $slideEl.find('.swiper-slide-shadow-bottom');\n\n if ($shadowBeforeEl.length === 0) {\n $shadowBeforeEl = createShadow(params, $slideEl, isHorizontal ? 'left' : 'top');\n }\n\n if ($shadowAfterEl.length === 0) {\n $shadowAfterEl = createShadow(params, $slideEl, isHorizontal ? 'right' : 'bottom');\n }\n\n if ($shadowBeforeEl.length) $shadowBeforeEl[0].style.opacity = offsetMultiplier > 0 ? offsetMultiplier : 0;\n if ($shadowAfterEl.length) $shadowAfterEl[0].style.opacity = -offsetMultiplier > 0 ? -offsetMultiplier : 0;\n }\n }\n };\n\n const setTransition = duration => {\n const {\n transformEl\n } = swiper.params.coverflowEffect;\n const $transitionElements = transformEl ? swiper.slides.find(transformEl) : swiper.slides;\n $transitionElements.transition(duration).find('.swiper-slide-shadow-top, .swiper-slide-shadow-right, .swiper-slide-shadow-bottom, .swiper-slide-shadow-left').transition(duration);\n };\n\n effectInit({\n effect: 'coverflow',\n swiper,\n on,\n setTranslate,\n setTransition,\n perspective: () => true,\n overwriteParams: () => ({\n watchSlidesProgress: true\n })\n });\n}","import createShadow from '../../shared/create-shadow.js';\nimport effectInit from '../../shared/effect-init.js';\nimport effectTarget from '../../shared/effect-target.js';\nimport effectVirtualTransitionEnd from '../../shared/effect-virtual-transition-end.js';\nexport default function EffectCreative({\n swiper,\n extendParams,\n on\n}) {\n extendParams({\n creativeEffect: {\n transformEl: null,\n limitProgress: 1,\n shadowPerProgress: false,\n progressMultiplier: 1,\n perspective: true,\n prev: {\n translate: [0, 0, 0],\n rotate: [0, 0, 0],\n opacity: 1,\n scale: 1\n },\n next: {\n translate: [0, 0, 0],\n rotate: [0, 0, 0],\n opacity: 1,\n scale: 1\n }\n }\n });\n\n const getTranslateValue = value => {\n if (typeof value === 'string') return value;\n return `${value}px`;\n };\n\n const setTranslate = () => {\n const {\n slides,\n $wrapperEl,\n slidesSizesGrid\n } = swiper;\n const params = swiper.params.creativeEffect;\n const {\n progressMultiplier: multiplier\n } = params;\n const isCenteredSlides = swiper.params.centeredSlides;\n\n if (isCenteredSlides) {\n const margin = slidesSizesGrid[0] / 2 - swiper.params.slidesOffsetBefore || 0;\n $wrapperEl.transform(`translateX(calc(50% - ${margin}px))`);\n }\n\n for (let i = 0; i < slides.length; i += 1) {\n const $slideEl = slides.eq(i);\n const slideProgress = $slideEl[0].progress;\n const progress = Math.min(Math.max($slideEl[0].progress, -params.limitProgress), params.limitProgress);\n let originalProgress = progress;\n\n if (!isCenteredSlides) {\n originalProgress = Math.min(Math.max($slideEl[0].originalProgress, -params.limitProgress), params.limitProgress);\n }\n\n const offset = $slideEl[0].swiperSlideOffset;\n const t = [swiper.params.cssMode ? -offset - swiper.translate : -offset, 0, 0];\n const r = [0, 0, 0];\n let custom = false;\n\n if (!swiper.isHorizontal()) {\n t[1] = t[0];\n t[0] = 0;\n }\n\n let data = {\n translate: [0, 0, 0],\n rotate: [0, 0, 0],\n scale: 1,\n opacity: 1\n };\n\n if (progress < 0) {\n data = params.next;\n custom = true;\n } else if (progress > 0) {\n data = params.prev;\n custom = true;\n } // set translate\n\n\n t.forEach((value, index) => {\n t[index] = `calc(${value}px + (${getTranslateValue(data.translate[index])} * ${Math.abs(progress * multiplier)}))`;\n }); // set rotates\n\n r.forEach((value, index) => {\n r[index] = data.rotate[index] * Math.abs(progress * multiplier);\n });\n $slideEl[0].style.zIndex = -Math.abs(Math.round(slideProgress)) + slides.length;\n const translateString = t.join(', ');\n const rotateString = `rotateX(${r[0]}deg) rotateY(${r[1]}deg) rotateZ(${r[2]}deg)`;\n const scaleString = originalProgress < 0 ? `scale(${1 + (1 - data.scale) * originalProgress * multiplier})` : `scale(${1 - (1 - data.scale) * originalProgress * multiplier})`;\n const opacityString = originalProgress < 0 ? 1 + (1 - data.opacity) * originalProgress * multiplier : 1 - (1 - data.opacity) * originalProgress * multiplier;\n const transform = `translate3d(${translateString}) ${rotateString} ${scaleString}`; // Set shadows\n\n if (custom && data.shadow || !custom) {\n let $shadowEl = $slideEl.children('.swiper-slide-shadow');\n\n if ($shadowEl.length === 0 && data.shadow) {\n $shadowEl = createShadow(params, $slideEl);\n }\n\n if ($shadowEl.length) {\n const shadowOpacity = params.shadowPerProgress ? progress * (1 / params.limitProgress) : progress;\n $shadowEl[0].style.opacity = Math.min(Math.max(Math.abs(shadowOpacity), 0), 1);\n }\n }\n\n const $targetEl = effectTarget(params, $slideEl);\n $targetEl.transform(transform).css({\n opacity: opacityString\n });\n\n if (data.origin) {\n $targetEl.css('transform-origin', data.origin);\n }\n }\n };\n\n const setTransition = duration => {\n const {\n transformEl\n } = swiper.params.creativeEffect;\n const $transitionElements = transformEl ? swiper.slides.find(transformEl) : swiper.slides;\n $transitionElements.transition(duration).find('.swiper-slide-shadow').transition(duration);\n effectVirtualTransitionEnd({\n swiper,\n duration,\n transformEl,\n allSlides: true\n });\n };\n\n effectInit({\n effect: 'creative',\n swiper,\n on,\n setTranslate,\n setTransition,\n perspective: () => swiper.params.creativeEffect.perspective,\n overwriteParams: () => ({\n watchSlidesProgress: true,\n virtualTranslate: !swiper.params.cssMode\n })\n });\n}","import $ from '../../shared/dom.js';\nimport effectInit from '../../shared/effect-init.js';\nexport default function EffectCube({\n swiper,\n extendParams,\n on\n}) {\n extendParams({\n cubeEffect: {\n slideShadows: true,\n shadow: true,\n shadowOffset: 20,\n shadowScale: 0.94\n }\n });\n\n const setTranslate = () => {\n const {\n $el,\n $wrapperEl,\n slides,\n width: swiperWidth,\n height: swiperHeight,\n rtlTranslate: rtl,\n size: swiperSize,\n browser\n } = swiper;\n const params = swiper.params.cubeEffect;\n const isHorizontal = swiper.isHorizontal();\n const isVirtual = swiper.virtual && swiper.params.virtual.enabled;\n let wrapperRotate = 0;\n let $cubeShadowEl;\n\n if (params.shadow) {\n if (isHorizontal) {\n $cubeShadowEl = $wrapperEl.find('.swiper-cube-shadow');\n\n if ($cubeShadowEl.length === 0) {\n $cubeShadowEl = $('
');\n $wrapperEl.append($cubeShadowEl);\n }\n\n $cubeShadowEl.css({\n height: `${swiperWidth}px`\n });\n } else {\n $cubeShadowEl = $el.find('.swiper-cube-shadow');\n\n if ($cubeShadowEl.length === 0) {\n $cubeShadowEl = $('
');\n $el.append($cubeShadowEl);\n }\n }\n }\n\n for (let i = 0; i < slides.length; i += 1) {\n const $slideEl = slides.eq(i);\n let slideIndex = i;\n\n if (isVirtual) {\n slideIndex = parseInt($slideEl.attr('data-swiper-slide-index'), 10);\n }\n\n let slideAngle = slideIndex * 90;\n let round = Math.floor(slideAngle / 360);\n\n if (rtl) {\n slideAngle = -slideAngle;\n round = Math.floor(-slideAngle / 360);\n }\n\n const progress = Math.max(Math.min($slideEl[0].progress, 1), -1);\n let tx = 0;\n let ty = 0;\n let tz = 0;\n\n if (slideIndex % 4 === 0) {\n tx = -round * 4 * swiperSize;\n tz = 0;\n } else if ((slideIndex - 1) % 4 === 0) {\n tx = 0;\n tz = -round * 4 * swiperSize;\n } else if ((slideIndex - 2) % 4 === 0) {\n tx = swiperSize + round * 4 * swiperSize;\n tz = swiperSize;\n } else if ((slideIndex - 3) % 4 === 0) {\n tx = -swiperSize;\n tz = 3 * swiperSize + swiperSize * 4 * round;\n }\n\n if (rtl) {\n tx = -tx;\n }\n\n if (!isHorizontal) {\n ty = tx;\n tx = 0;\n }\n\n const transform = `rotateX(${isHorizontal ? 0 : -slideAngle}deg) rotateY(${isHorizontal ? slideAngle : 0}deg) translate3d(${tx}px, ${ty}px, ${tz}px)`;\n\n if (progress <= 1 && progress > -1) {\n wrapperRotate = slideIndex * 90 + progress * 90;\n if (rtl) wrapperRotate = -slideIndex * 90 - progress * 90;\n }\n\n $slideEl.transform(transform);\n\n if (params.slideShadows) {\n // Set shadows\n let shadowBefore = isHorizontal ? $slideEl.find('.swiper-slide-shadow-left') : $slideEl.find('.swiper-slide-shadow-top');\n let shadowAfter = isHorizontal ? $slideEl.find('.swiper-slide-shadow-right') : $slideEl.find('.swiper-slide-shadow-bottom');\n\n if (shadowBefore.length === 0) {\n shadowBefore = $(`
`);\n $slideEl.append(shadowBefore);\n }\n\n if (shadowAfter.length === 0) {\n shadowAfter = $(`
`);\n $slideEl.append(shadowAfter);\n }\n\n if (shadowBefore.length) shadowBefore[0].style.opacity = Math.max(-progress, 0);\n if (shadowAfter.length) shadowAfter[0].style.opacity = Math.max(progress, 0);\n }\n }\n\n $wrapperEl.css({\n '-webkit-transform-origin': `50% 50% -${swiperSize / 2}px`,\n 'transform-origin': `50% 50% -${swiperSize / 2}px`\n });\n\n if (params.shadow) {\n if (isHorizontal) {\n $cubeShadowEl.transform(`translate3d(0px, ${swiperWidth / 2 + params.shadowOffset}px, ${-swiperWidth / 2}px) rotateX(90deg) rotateZ(0deg) scale(${params.shadowScale})`);\n } else {\n const shadowAngle = Math.abs(wrapperRotate) - Math.floor(Math.abs(wrapperRotate) / 90) * 90;\n const multiplier = 1.5 - (Math.sin(shadowAngle * 2 * Math.PI / 360) / 2 + Math.cos(shadowAngle * 2 * Math.PI / 360) / 2);\n const scale1 = params.shadowScale;\n const scale2 = params.shadowScale / multiplier;\n const offset = params.shadowOffset;\n $cubeShadowEl.transform(`scale3d(${scale1}, 1, ${scale2}) translate3d(0px, ${swiperHeight / 2 + offset}px, ${-swiperHeight / 2 / scale2}px) rotateX(-90deg)`);\n }\n }\n\n const zFactor = browser.isSafari || browser.isWebView ? -swiperSize / 2 : 0;\n $wrapperEl.transform(`translate3d(0px,0,${zFactor}px) rotateX(${swiper.isHorizontal() ? 0 : wrapperRotate}deg) rotateY(${swiper.isHorizontal() ? -wrapperRotate : 0}deg)`);\n };\n\n const setTransition = duration => {\n const {\n $el,\n slides\n } = swiper;\n slides.transition(duration).find('.swiper-slide-shadow-top, .swiper-slide-shadow-right, .swiper-slide-shadow-bottom, .swiper-slide-shadow-left').transition(duration);\n\n if (swiper.params.cubeEffect.shadow && !swiper.isHorizontal()) {\n $el.find('.swiper-cube-shadow').transition(duration);\n }\n };\n\n effectInit({\n effect: 'cube',\n swiper,\n on,\n setTranslate,\n setTransition,\n perspective: () => true,\n overwriteParams: () => ({\n slidesPerView: 1,\n slidesPerGroup: 1,\n watchSlidesProgress: true,\n resistanceRatio: 0,\n spaceBetween: 0,\n centeredSlides: false,\n virtualTranslate: true\n })\n });\n}","import effectInit from '../../shared/effect-init.js';\nimport effectTarget from '../../shared/effect-target.js';\nimport effectVirtualTransitionEnd from '../../shared/effect-virtual-transition-end.js';\nexport default function EffectFade({\n swiper,\n extendParams,\n on\n}) {\n extendParams({\n fadeEffect: {\n crossFade: false,\n transformEl: null\n }\n });\n\n const setTranslate = () => {\n const {\n slides\n } = swiper;\n const params = swiper.params.fadeEffect;\n\n for (let i = 0; i < slides.length; i += 1) {\n const $slideEl = swiper.slides.eq(i);\n const offset = $slideEl[0].swiperSlideOffset;\n let tx = -offset;\n if (!swiper.params.virtualTranslate) tx -= swiper.translate;\n let ty = 0;\n\n if (!swiper.isHorizontal()) {\n ty = tx;\n tx = 0;\n }\n\n const slideOpacity = swiper.params.fadeEffect.crossFade ? Math.max(1 - Math.abs($slideEl[0].progress), 0) : 1 + Math.min(Math.max($slideEl[0].progress, -1), 0);\n const $targetEl = effectTarget(params, $slideEl);\n $targetEl.css({\n opacity: slideOpacity\n }).transform(`translate3d(${tx}px, ${ty}px, 0px)`);\n }\n };\n\n const setTransition = duration => {\n const {\n transformEl\n } = swiper.params.fadeEffect;\n const $transitionElements = transformEl ? swiper.slides.find(transformEl) : swiper.slides;\n $transitionElements.transition(duration);\n effectVirtualTransitionEnd({\n swiper,\n duration,\n transformEl,\n allSlides: true\n });\n };\n\n effectInit({\n effect: 'fade',\n swiper,\n on,\n setTranslate,\n setTransition,\n overwriteParams: () => ({\n slidesPerView: 1,\n slidesPerGroup: 1,\n watchSlidesProgress: true,\n spaceBetween: 0,\n virtualTranslate: !swiper.params.cssMode\n })\n });\n}","import createShadow from '../../shared/create-shadow.js';\nimport effectInit from '../../shared/effect-init.js';\nimport effectTarget from '../../shared/effect-target.js';\nimport effectVirtualTransitionEnd from '../../shared/effect-virtual-transition-end.js';\nexport default function EffectFlip({\n swiper,\n extendParams,\n on\n}) {\n extendParams({\n flipEffect: {\n slideShadows: true,\n limitRotation: true,\n transformEl: null\n }\n });\n\n const setTranslate = () => {\n const {\n slides,\n rtlTranslate: rtl\n } = swiper;\n const params = swiper.params.flipEffect;\n\n for (let i = 0; i < slides.length; i += 1) {\n const $slideEl = slides.eq(i);\n let progress = $slideEl[0].progress;\n\n if (swiper.params.flipEffect.limitRotation) {\n progress = Math.max(Math.min($slideEl[0].progress, 1), -1);\n }\n\n const offset = $slideEl[0].swiperSlideOffset;\n const rotate = -180 * progress;\n let rotateY = rotate;\n let rotateX = 0;\n let tx = swiper.params.cssMode ? -offset - swiper.translate : -offset;\n let ty = 0;\n\n if (!swiper.isHorizontal()) {\n ty = tx;\n tx = 0;\n rotateX = -rotateY;\n rotateY = 0;\n } else if (rtl) {\n rotateY = -rotateY;\n }\n\n $slideEl[0].style.zIndex = -Math.abs(Math.round(progress)) + slides.length;\n\n if (params.slideShadows) {\n // Set shadows\n let shadowBefore = swiper.isHorizontal() ? $slideEl.find('.swiper-slide-shadow-left') : $slideEl.find('.swiper-slide-shadow-top');\n let shadowAfter = swiper.isHorizontal() ? $slideEl.find('.swiper-slide-shadow-right') : $slideEl.find('.swiper-slide-shadow-bottom');\n\n if (shadowBefore.length === 0) {\n shadowBefore = createShadow(params, $slideEl, swiper.isHorizontal() ? 'left' : 'top');\n }\n\n if (shadowAfter.length === 0) {\n shadowAfter = createShadow(params, $slideEl, swiper.isHorizontal() ? 'right' : 'bottom');\n }\n\n if (shadowBefore.length) shadowBefore[0].style.opacity = Math.max(-progress, 0);\n if (shadowAfter.length) shadowAfter[0].style.opacity = Math.max(progress, 0);\n }\n\n const transform = `translate3d(${tx}px, ${ty}px, 0px) rotateX(${rotateX}deg) rotateY(${rotateY}deg)`;\n const $targetEl = effectTarget(params, $slideEl);\n $targetEl.transform(transform);\n }\n };\n\n const setTransition = duration => {\n const {\n transformEl\n } = swiper.params.flipEffect;\n const $transitionElements = transformEl ? swiper.slides.find(transformEl) : swiper.slides;\n $transitionElements.transition(duration).find('.swiper-slide-shadow-top, .swiper-slide-shadow-right, .swiper-slide-shadow-bottom, .swiper-slide-shadow-left').transition(duration);\n effectVirtualTransitionEnd({\n swiper,\n duration,\n transformEl\n });\n };\n\n effectInit({\n effect: 'flip',\n swiper,\n on,\n setTranslate,\n setTransition,\n perspective: () => true,\n overwriteParams: () => ({\n slidesPerView: 1,\n slidesPerGroup: 1,\n watchSlidesProgress: true,\n spaceBetween: 0,\n virtualTranslate: !swiper.params.cssMode\n })\n });\n}","import { now } from '../../shared/utils.js';\nexport default function freeMode({\n swiper,\n extendParams,\n emit,\n once\n}) {\n extendParams({\n freeMode: {\n enabled: false,\n momentum: true,\n momentumRatio: 1,\n momentumBounce: true,\n momentumBounceRatio: 1,\n momentumVelocityRatio: 1,\n sticky: false,\n minimumVelocity: 0.02\n }\n });\n\n function onTouchMove() {\n const {\n touchEventsData: data,\n touches\n } = swiper; // Velocity\n\n if (data.velocities.length === 0) {\n data.velocities.push({\n position: touches[swiper.isHorizontal() ? 'startX' : 'startY'],\n time: data.touchStartTime\n });\n }\n\n data.velocities.push({\n position: touches[swiper.isHorizontal() ? 'currentX' : 'currentY'],\n time: now()\n });\n }\n\n function onTouchEnd({\n currentPos\n }) {\n const {\n params,\n $wrapperEl,\n rtlTranslate: rtl,\n snapGrid,\n touchEventsData: data\n } = swiper; // Time diff\n\n const touchEndTime = now();\n const timeDiff = touchEndTime - data.touchStartTime;\n\n if (currentPos < -swiper.minTranslate()) {\n swiper.slideTo(swiper.activeIndex);\n return;\n }\n\n if (currentPos > -swiper.maxTranslate()) {\n if (swiper.slides.length < snapGrid.length) {\n swiper.slideTo(snapGrid.length - 1);\n } else {\n swiper.slideTo(swiper.slides.length - 1);\n }\n\n return;\n }\n\n if (params.freeMode.momentum) {\n if (data.velocities.length > 1) {\n const lastMoveEvent = data.velocities.pop();\n const velocityEvent = data.velocities.pop();\n const distance = lastMoveEvent.position - velocityEvent.position;\n const time = lastMoveEvent.time - velocityEvent.time;\n swiper.velocity = distance / time;\n swiper.velocity /= 2;\n\n if (Math.abs(swiper.velocity) < params.freeMode.minimumVelocity) {\n swiper.velocity = 0;\n } // this implies that the user stopped moving a finger then released.\n // There would be no events with distance zero, so the last event is stale.\n\n\n if (time > 150 || now() - lastMoveEvent.time > 300) {\n swiper.velocity = 0;\n }\n } else {\n swiper.velocity = 0;\n }\n\n swiper.velocity *= params.freeMode.momentumVelocityRatio;\n data.velocities.length = 0;\n let momentumDuration = 1000 * params.freeMode.momentumRatio;\n const momentumDistance = swiper.velocity * momentumDuration;\n let newPosition = swiper.translate + momentumDistance;\n if (rtl) newPosition = -newPosition;\n let doBounce = false;\n let afterBouncePosition;\n const bounceAmount = Math.abs(swiper.velocity) * 20 * params.freeMode.momentumBounceRatio;\n let needsLoopFix;\n\n if (newPosition < swiper.maxTranslate()) {\n if (params.freeMode.momentumBounce) {\n if (newPosition + swiper.maxTranslate() < -bounceAmount) {\n newPosition = swiper.maxTranslate() - bounceAmount;\n }\n\n afterBouncePosition = swiper.maxTranslate();\n doBounce = true;\n data.allowMomentumBounce = true;\n } else {\n newPosition = swiper.maxTranslate();\n }\n\n if (params.loop && params.centeredSlides) needsLoopFix = true;\n } else if (newPosition > swiper.minTranslate()) {\n if (params.freeMode.momentumBounce) {\n if (newPosition - swiper.minTranslate() > bounceAmount) {\n newPosition = swiper.minTranslate() + bounceAmount;\n }\n\n afterBouncePosition = swiper.minTranslate();\n doBounce = true;\n data.allowMomentumBounce = true;\n } else {\n newPosition = swiper.minTranslate();\n }\n\n if (params.loop && params.centeredSlides) needsLoopFix = true;\n } else if (params.freeMode.sticky) {\n let nextSlide;\n\n for (let j = 0; j < snapGrid.length; j += 1) {\n if (snapGrid[j] > -newPosition) {\n nextSlide = j;\n break;\n }\n }\n\n if (Math.abs(snapGrid[nextSlide] - newPosition) < Math.abs(snapGrid[nextSlide - 1] - newPosition) || swiper.swipeDirection === 'next') {\n newPosition = snapGrid[nextSlide];\n } else {\n newPosition = snapGrid[nextSlide - 1];\n }\n\n newPosition = -newPosition;\n }\n\n if (needsLoopFix) {\n once('transitionEnd', () => {\n swiper.loopFix();\n });\n } // Fix duration\n\n\n if (swiper.velocity !== 0) {\n if (rtl) {\n momentumDuration = Math.abs((-newPosition - swiper.translate) / swiper.velocity);\n } else {\n momentumDuration = Math.abs((newPosition - swiper.translate) / swiper.velocity);\n }\n\n if (params.freeMode.sticky) {\n // If freeMode.sticky is active and the user ends a swipe with a slow-velocity\n // event, then durations can be 20+ seconds to slide one (or zero!) slides.\n // It's easy to see this when simulating touch with mouse events. To fix this,\n // limit single-slide swipes to the default slide duration. This also has the\n // nice side effect of matching slide speed if the user stopped moving before\n // lifting finger or mouse vs. moving slowly before lifting the finger/mouse.\n // For faster swipes, also apply limits (albeit higher ones).\n const moveDistance = Math.abs((rtl ? -newPosition : newPosition) - swiper.translate);\n const currentSlideSize = swiper.slidesSizesGrid[swiper.activeIndex];\n\n if (moveDistance < currentSlideSize) {\n momentumDuration = params.speed;\n } else if (moveDistance < 2 * currentSlideSize) {\n momentumDuration = params.speed * 1.5;\n } else {\n momentumDuration = params.speed * 2.5;\n }\n }\n } else if (params.freeMode.sticky) {\n swiper.slideToClosest();\n return;\n }\n\n if (params.freeMode.momentumBounce && doBounce) {\n swiper.updateProgress(afterBouncePosition);\n swiper.setTransition(momentumDuration);\n swiper.setTranslate(newPosition);\n swiper.transitionStart(true, swiper.swipeDirection);\n swiper.animating = true;\n $wrapperEl.transitionEnd(() => {\n if (!swiper || swiper.destroyed || !data.allowMomentumBounce) return;\n emit('momentumBounce');\n swiper.setTransition(params.speed);\n setTimeout(() => {\n swiper.setTranslate(afterBouncePosition);\n $wrapperEl.transitionEnd(() => {\n if (!swiper || swiper.destroyed) return;\n swiper.transitionEnd();\n });\n }, 0);\n });\n } else if (swiper.velocity) {\n emit('_freeModeNoMomentumRelease');\n swiper.updateProgress(newPosition);\n swiper.setTransition(momentumDuration);\n swiper.setTranslate(newPosition);\n swiper.transitionStart(true, swiper.swipeDirection);\n\n if (!swiper.animating) {\n swiper.animating = true;\n $wrapperEl.transitionEnd(() => {\n if (!swiper || swiper.destroyed) return;\n swiper.transitionEnd();\n });\n }\n } else {\n swiper.updateProgress(newPosition);\n }\n\n swiper.updateActiveIndex();\n swiper.updateSlidesClasses();\n } else if (params.freeMode.sticky) {\n swiper.slideToClosest();\n return;\n } else if (params.freeMode) {\n emit('_freeModeNoMomentumRelease');\n }\n\n if (!params.freeMode.momentum || timeDiff >= params.longSwipesMs) {\n swiper.updateProgress();\n swiper.updateActiveIndex();\n swiper.updateSlidesClasses();\n }\n }\n\n Object.assign(swiper, {\n freeMode: {\n onTouchMove,\n onTouchEnd\n }\n });\n}","export default function Grid({\n swiper,\n extendParams\n}) {\n extendParams({\n grid: {\n rows: 1,\n fill: 'column'\n }\n });\n let slidesNumberEvenToRows;\n let slidesPerRow;\n let numFullColumns;\n\n const initSlides = slidesLength => {\n const {\n slidesPerView\n } = swiper.params;\n const {\n rows,\n fill\n } = swiper.params.grid;\n slidesPerRow = slidesNumberEvenToRows / rows;\n numFullColumns = Math.floor(slidesLength / rows);\n\n if (Math.floor(slidesLength / rows) === slidesLength / rows) {\n slidesNumberEvenToRows = slidesLength;\n } else {\n slidesNumberEvenToRows = Math.ceil(slidesLength / rows) * rows;\n }\n\n if (slidesPerView !== 'auto' && fill === 'row') {\n slidesNumberEvenToRows = Math.max(slidesNumberEvenToRows, slidesPerView * rows);\n }\n };\n\n const updateSlide = (i, slide, slidesLength, getDirectionLabel) => {\n const {\n slidesPerGroup,\n spaceBetween\n } = swiper.params;\n const {\n rows,\n fill\n } = swiper.params.grid; // Set slides order\n\n let newSlideOrderIndex;\n let column;\n let row;\n\n if (fill === 'row' && slidesPerGroup > 1) {\n const groupIndex = Math.floor(i / (slidesPerGroup * rows));\n const slideIndexInGroup = i - rows * slidesPerGroup * groupIndex;\n const columnsInGroup = groupIndex === 0 ? slidesPerGroup : Math.min(Math.ceil((slidesLength - groupIndex * rows * slidesPerGroup) / rows), slidesPerGroup);\n row = Math.floor(slideIndexInGroup / columnsInGroup);\n column = slideIndexInGroup - row * columnsInGroup + groupIndex * slidesPerGroup;\n newSlideOrderIndex = column + row * slidesNumberEvenToRows / rows;\n slide.css({\n '-webkit-order': newSlideOrderIndex,\n order: newSlideOrderIndex\n });\n } else if (fill === 'column') {\n column = Math.floor(i / rows);\n row = i - column * rows;\n\n if (column > numFullColumns || column === numFullColumns && row === rows - 1) {\n row += 1;\n\n if (row >= rows) {\n row = 0;\n column += 1;\n }\n }\n } else {\n row = Math.floor(i / slidesPerRow);\n column = i - row * slidesPerRow;\n }\n\n slide.css(getDirectionLabel('margin-top'), row !== 0 ? spaceBetween && `${spaceBetween}px` : '');\n };\n\n const updateWrapperSize = (slideSize, snapGrid, getDirectionLabel) => {\n const {\n spaceBetween,\n centeredSlides,\n roundLengths\n } = swiper.params;\n const {\n rows\n } = swiper.params.grid;\n swiper.virtualSize = (slideSize + spaceBetween) * slidesNumberEvenToRows;\n swiper.virtualSize = Math.ceil(swiper.virtualSize / rows) - spaceBetween;\n swiper.$wrapperEl.css({\n [getDirectionLabel('width')]: `${swiper.virtualSize + spaceBetween}px`\n });\n\n if (centeredSlides) {\n snapGrid.splice(0, snapGrid.length);\n const newSlidesGrid = [];\n\n for (let i = 0; i < snapGrid.length; i += 1) {\n let slidesGridItem = snapGrid[i];\n if (roundLengths) slidesGridItem = Math.floor(slidesGridItem);\n if (snapGrid[i] < swiper.virtualSize + snapGrid[0]) newSlidesGrid.push(slidesGridItem);\n }\n\n snapGrid.push(...newSlidesGrid);\n }\n };\n\n swiper.grid = {\n initSlides,\n updateSlide,\n updateWrapperSize\n };\n}","import { getWindow, getDocument } from 'ssr-window';\nimport $ from '../../shared/dom.js';\nexport default function HashNavigation({\n swiper,\n extendParams,\n emit,\n on\n}) {\n let initialized = false;\n const document = getDocument();\n const window = getWindow();\n extendParams({\n hashNavigation: {\n enabled: false,\n replaceState: false,\n watchState: false\n }\n });\n\n const onHashChange = () => {\n emit('hashChange');\n const newHash = document.location.hash.replace('#', '');\n const activeSlideHash = swiper.slides.eq(swiper.activeIndex).attr('data-hash');\n\n if (newHash !== activeSlideHash) {\n const newIndex = swiper.$wrapperEl.children(`.${swiper.params.slideClass}[data-hash=\"${newHash}\"]`).index();\n if (typeof newIndex === 'undefined') return;\n swiper.slideTo(newIndex);\n }\n };\n\n const setHash = () => {\n if (!initialized || !swiper.params.hashNavigation.enabled) return;\n\n if (swiper.params.hashNavigation.replaceState && window.history && window.history.replaceState) {\n window.history.replaceState(null, null, `#${swiper.slides.eq(swiper.activeIndex).attr('data-hash')}` || '');\n emit('hashSet');\n } else {\n const slide = swiper.slides.eq(swiper.activeIndex);\n const hash = slide.attr('data-hash') || slide.attr('data-history');\n document.location.hash = hash || '';\n emit('hashSet');\n }\n };\n\n const init = () => {\n if (!swiper.params.hashNavigation.enabled || swiper.params.history && swiper.params.history.enabled) return;\n initialized = true;\n const hash = document.location.hash.replace('#', '');\n\n if (hash) {\n const speed = 0;\n\n for (let i = 0, length = swiper.slides.length; i < length; i += 1) {\n const slide = swiper.slides.eq(i);\n const slideHash = slide.attr('data-hash') || slide.attr('data-history');\n\n if (slideHash === hash && !slide.hasClass(swiper.params.slideDuplicateClass)) {\n const index = slide.index();\n swiper.slideTo(index, speed, swiper.params.runCallbacksOnInit, true);\n }\n }\n }\n\n if (swiper.params.hashNavigation.watchState) {\n $(window).on('hashchange', onHashChange);\n }\n };\n\n const destroy = () => {\n if (swiper.params.hashNavigation.watchState) {\n $(window).off('hashchange', onHashChange);\n }\n };\n\n on('init', () => {\n if (swiper.params.hashNavigation.enabled) {\n init();\n }\n });\n on('destroy', () => {\n if (swiper.params.hashNavigation.enabled) {\n destroy();\n }\n });\n on('transitionEnd _freeModeNoMomentumRelease', () => {\n if (initialized) {\n setHash();\n }\n });\n on('slideChange', () => {\n if (initialized && swiper.params.cssMode) {\n setHash();\n }\n });\n}","import { getWindow } from 'ssr-window';\nexport default function History({\n swiper,\n extendParams,\n on\n}) {\n extendParams({\n history: {\n enabled: false,\n root: '',\n replaceState: false,\n key: 'slides'\n }\n });\n let initialized = false;\n let paths = {};\n\n const slugify = text => {\n return text.toString().replace(/\\s+/g, '-').replace(/[^\\w-]+/g, '').replace(/--+/g, '-').replace(/^-+/, '').replace(/-+$/, '');\n };\n\n const getPathValues = urlOverride => {\n const window = getWindow();\n let location;\n\n if (urlOverride) {\n location = new URL(urlOverride);\n } else {\n location = window.location;\n }\n\n const pathArray = location.pathname.slice(1).split('/').filter(part => part !== '');\n const total = pathArray.length;\n const key = pathArray[total - 2];\n const value = pathArray[total - 1];\n return {\n key,\n value\n };\n };\n\n const setHistory = (key, index) => {\n const window = getWindow();\n if (!initialized || !swiper.params.history.enabled) return;\n let location;\n\n if (swiper.params.url) {\n location = new URL(swiper.params.url);\n } else {\n location = window.location;\n }\n\n const slide = swiper.slides.eq(index);\n let value = slugify(slide.attr('data-history'));\n\n if (swiper.params.history.root.length > 0) {\n let root = swiper.params.history.root;\n if (root[root.length - 1] === '/') root = root.slice(0, root.length - 1);\n value = `${root}/${key}/${value}`;\n } else if (!location.pathname.includes(key)) {\n value = `${key}/${value}`;\n }\n\n const currentState = window.history.state;\n\n if (currentState && currentState.value === value) {\n return;\n }\n\n if (swiper.params.history.replaceState) {\n window.history.replaceState({\n value\n }, null, value);\n } else {\n window.history.pushState({\n value\n }, null, value);\n }\n };\n\n const scrollToSlide = (speed, value, runCallbacks) => {\n if (value) {\n for (let i = 0, length = swiper.slides.length; i < length; i += 1) {\n const slide = swiper.slides.eq(i);\n const slideHistory = slugify(slide.attr('data-history'));\n\n if (slideHistory === value && !slide.hasClass(swiper.params.slideDuplicateClass)) {\n const index = slide.index();\n swiper.slideTo(index, speed, runCallbacks);\n }\n }\n } else {\n swiper.slideTo(0, speed, runCallbacks);\n }\n };\n\n const setHistoryPopState = () => {\n paths = getPathValues(swiper.params.url);\n scrollToSlide(swiper.params.speed, swiper.paths.value, false);\n };\n\n const init = () => {\n const window = getWindow();\n if (!swiper.params.history) return;\n\n if (!window.history || !window.history.pushState) {\n swiper.params.history.enabled = false;\n swiper.params.hashNavigation.enabled = true;\n return;\n }\n\n initialized = true;\n paths = getPathValues(swiper.params.url);\n if (!paths.key && !paths.value) return;\n scrollToSlide(0, paths.value, swiper.params.runCallbacksOnInit);\n\n if (!swiper.params.history.replaceState) {\n window.addEventListener('popstate', setHistoryPopState);\n }\n };\n\n const destroy = () => {\n const window = getWindow();\n\n if (!swiper.params.history.replaceState) {\n window.removeEventListener('popstate', setHistoryPopState);\n }\n };\n\n on('init', () => {\n if (swiper.params.history.enabled) {\n init();\n }\n });\n on('destroy', () => {\n if (swiper.params.history.enabled) {\n destroy();\n }\n });\n on('transitionEnd _freeModeNoMomentumRelease', () => {\n if (initialized) {\n setHistory(swiper.params.history.key, swiper.activeIndex);\n }\n });\n on('slideChange', () => {\n if (initialized && swiper.params.cssMode) {\n setHistory(swiper.params.history.key, swiper.activeIndex);\n }\n });\n}","/* eslint-disable consistent-return */\nimport { getWindow, getDocument } from 'ssr-window';\nimport $ from '../../shared/dom.js';\nexport default function Keyboard({\n swiper,\n extendParams,\n on,\n emit\n}) {\n const document = getDocument();\n const window = getWindow();\n swiper.keyboard = {\n enabled: false\n };\n extendParams({\n keyboard: {\n enabled: false,\n onlyInViewport: true,\n pageUpDown: true\n }\n });\n\n function handle(event) {\n if (!swiper.enabled) return;\n const {\n rtlTranslate: rtl\n } = swiper;\n let e = event;\n if (e.originalEvent) e = e.originalEvent; // jquery fix\n\n const kc = e.keyCode || e.charCode;\n const pageUpDown = swiper.params.keyboard.pageUpDown;\n const isPageUp = pageUpDown && kc === 33;\n const isPageDown = pageUpDown && kc === 34;\n const isArrowLeft = kc === 37;\n const isArrowRight = kc === 39;\n const isArrowUp = kc === 38;\n const isArrowDown = kc === 40; // Directions locks\n\n if (!swiper.allowSlideNext && (swiper.isHorizontal() && isArrowRight || swiper.isVertical() && isArrowDown || isPageDown)) {\n return false;\n }\n\n if (!swiper.allowSlidePrev && (swiper.isHorizontal() && isArrowLeft || swiper.isVertical() && isArrowUp || isPageUp)) {\n return false;\n }\n\n if (e.shiftKey || e.altKey || e.ctrlKey || e.metaKey) {\n return undefined;\n }\n\n if (document.activeElement && document.activeElement.nodeName && (document.activeElement.nodeName.toLowerCase() === 'input' || document.activeElement.nodeName.toLowerCase() === 'textarea')) {\n return undefined;\n }\n\n if (swiper.params.keyboard.onlyInViewport && (isPageUp || isPageDown || isArrowLeft || isArrowRight || isArrowUp || isArrowDown)) {\n let inView = false; // Check that swiper should be inside of visible area of window\n\n if (swiper.$el.parents(`.${swiper.params.slideClass}`).length > 0 && swiper.$el.parents(`.${swiper.params.slideActiveClass}`).length === 0) {\n return undefined;\n }\n\n const $el = swiper.$el;\n const swiperWidth = $el[0].clientWidth;\n const swiperHeight = $el[0].clientHeight;\n const windowWidth = window.innerWidth;\n const windowHeight = window.innerHeight;\n const swiperOffset = swiper.$el.offset();\n if (rtl) swiperOffset.left -= swiper.$el[0].scrollLeft;\n const swiperCoord = [[swiperOffset.left, swiperOffset.top], [swiperOffset.left + swiperWidth, swiperOffset.top], [swiperOffset.left, swiperOffset.top + swiperHeight], [swiperOffset.left + swiperWidth, swiperOffset.top + swiperHeight]];\n\n for (let i = 0; i < swiperCoord.length; i += 1) {\n const point = swiperCoord[i];\n\n if (point[0] >= 0 && point[0] <= windowWidth && point[1] >= 0 && point[1] <= windowHeight) {\n if (point[0] === 0 && point[1] === 0) continue; // eslint-disable-line\n\n inView = true;\n }\n }\n\n if (!inView) return undefined;\n }\n\n if (swiper.isHorizontal()) {\n if (isPageUp || isPageDown || isArrowLeft || isArrowRight) {\n if (e.preventDefault) e.preventDefault();else e.returnValue = false;\n }\n\n if ((isPageDown || isArrowRight) && !rtl || (isPageUp || isArrowLeft) && rtl) swiper.slideNext();\n if ((isPageUp || isArrowLeft) && !rtl || (isPageDown || isArrowRight) && rtl) swiper.slidePrev();\n } else {\n if (isPageUp || isPageDown || isArrowUp || isArrowDown) {\n if (e.preventDefault) e.preventDefault();else e.returnValue = false;\n }\n\n if (isPageDown || isArrowDown) swiper.slideNext();\n if (isPageUp || isArrowUp) swiper.slidePrev();\n }\n\n emit('keyPress', kc);\n return undefined;\n }\n\n function enable() {\n if (swiper.keyboard.enabled) return;\n $(document).on('keydown', handle);\n swiper.keyboard.enabled = true;\n }\n\n function disable() {\n if (!swiper.keyboard.enabled) return;\n $(document).off('keydown', handle);\n swiper.keyboard.enabled = false;\n }\n\n on('init', () => {\n if (swiper.params.keyboard.enabled) {\n enable();\n }\n });\n on('destroy', () => {\n if (swiper.keyboard.enabled) {\n disable();\n }\n });\n Object.assign(swiper.keyboard, {\n enable,\n disable\n });\n}","import { getWindow } from 'ssr-window';\nimport $ from '../../shared/dom.js';\nexport default function Lazy({\n swiper,\n extendParams,\n on,\n emit\n}) {\n extendParams({\n lazy: {\n checkInView: false,\n enabled: false,\n loadPrevNext: false,\n loadPrevNextAmount: 1,\n loadOnTransitionStart: false,\n scrollingElement: '',\n elementClass: 'swiper-lazy',\n loadingClass: 'swiper-lazy-loading',\n loadedClass: 'swiper-lazy-loaded',\n preloaderClass: 'swiper-lazy-preloader'\n }\n });\n swiper.lazy = {};\n let scrollHandlerAttached = false;\n let initialImageLoaded = false;\n\n function loadInSlide(index, loadInDuplicate = true) {\n const params = swiper.params.lazy;\n if (typeof index === 'undefined') return;\n if (swiper.slides.length === 0) return;\n const isVirtual = swiper.virtual && swiper.params.virtual.enabled;\n const $slideEl = isVirtual ? swiper.$wrapperEl.children(`.${swiper.params.slideClass}[data-swiper-slide-index=\"${index}\"]`) : swiper.slides.eq(index);\n const $images = $slideEl.find(`.${params.elementClass}:not(.${params.loadedClass}):not(.${params.loadingClass})`);\n\n if ($slideEl.hasClass(params.elementClass) && !$slideEl.hasClass(params.loadedClass) && !$slideEl.hasClass(params.loadingClass)) {\n $images.push($slideEl[0]);\n }\n\n if ($images.length === 0) return;\n $images.each(imageEl => {\n const $imageEl = $(imageEl);\n $imageEl.addClass(params.loadingClass);\n const background = $imageEl.attr('data-background');\n const src = $imageEl.attr('data-src');\n const srcset = $imageEl.attr('data-srcset');\n const sizes = $imageEl.attr('data-sizes');\n const $pictureEl = $imageEl.parent('picture');\n swiper.loadImage($imageEl[0], src || background, srcset, sizes, false, () => {\n if (typeof swiper === 'undefined' || swiper === null || !swiper || swiper && !swiper.params || swiper.destroyed) return;\n\n if (background) {\n $imageEl.css('background-image', `url(\"${background}\")`);\n $imageEl.removeAttr('data-background');\n } else {\n if (srcset) {\n $imageEl.attr('srcset', srcset);\n $imageEl.removeAttr('data-srcset');\n }\n\n if (sizes) {\n $imageEl.attr('sizes', sizes);\n $imageEl.removeAttr('data-sizes');\n }\n\n if ($pictureEl.length) {\n $pictureEl.children('source').each(sourceEl => {\n const $source = $(sourceEl);\n\n if ($source.attr('data-srcset')) {\n $source.attr('srcset', $source.attr('data-srcset'));\n $source.removeAttr('data-srcset');\n }\n });\n }\n\n if (src) {\n $imageEl.attr('src', src);\n $imageEl.removeAttr('data-src');\n }\n }\n\n $imageEl.addClass(params.loadedClass).removeClass(params.loadingClass);\n $slideEl.find(`.${params.preloaderClass}`).remove();\n\n if (swiper.params.loop && loadInDuplicate) {\n const slideOriginalIndex = $slideEl.attr('data-swiper-slide-index');\n\n if ($slideEl.hasClass(swiper.params.slideDuplicateClass)) {\n const originalSlide = swiper.$wrapperEl.children(`[data-swiper-slide-index=\"${slideOriginalIndex}\"]:not(.${swiper.params.slideDuplicateClass})`);\n loadInSlide(originalSlide.index(), false);\n } else {\n const duplicatedSlide = swiper.$wrapperEl.children(`.${swiper.params.slideDuplicateClass}[data-swiper-slide-index=\"${slideOriginalIndex}\"]`);\n loadInSlide(duplicatedSlide.index(), false);\n }\n }\n\n emit('lazyImageReady', $slideEl[0], $imageEl[0]);\n\n if (swiper.params.autoHeight) {\n swiper.updateAutoHeight();\n }\n });\n emit('lazyImageLoad', $slideEl[0], $imageEl[0]);\n });\n }\n\n function load() {\n const {\n $wrapperEl,\n params: swiperParams,\n slides,\n activeIndex\n } = swiper;\n const isVirtual = swiper.virtual && swiperParams.virtual.enabled;\n const params = swiperParams.lazy;\n let slidesPerView = swiperParams.slidesPerView;\n\n if (slidesPerView === 'auto') {\n slidesPerView = 0;\n }\n\n function slideExist(index) {\n if (isVirtual) {\n if ($wrapperEl.children(`.${swiperParams.slideClass}[data-swiper-slide-index=\"${index}\"]`).length) {\n return true;\n }\n } else if (slides[index]) return true;\n\n return false;\n }\n\n function slideIndex(slideEl) {\n if (isVirtual) {\n return $(slideEl).attr('data-swiper-slide-index');\n }\n\n return $(slideEl).index();\n }\n\n if (!initialImageLoaded) initialImageLoaded = true;\n\n if (swiper.params.watchSlidesProgress) {\n $wrapperEl.children(`.${swiperParams.slideVisibleClass}`).each(slideEl => {\n const index = isVirtual ? $(slideEl).attr('data-swiper-slide-index') : $(slideEl).index();\n loadInSlide(index);\n });\n } else if (slidesPerView > 1) {\n for (let i = activeIndex; i < activeIndex + slidesPerView; i += 1) {\n if (slideExist(i)) loadInSlide(i);\n }\n } else {\n loadInSlide(activeIndex);\n }\n\n if (params.loadPrevNext) {\n if (slidesPerView > 1 || params.loadPrevNextAmount && params.loadPrevNextAmount > 1) {\n const amount = params.loadPrevNextAmount;\n const spv = slidesPerView;\n const maxIndex = Math.min(activeIndex + spv + Math.max(amount, spv), slides.length);\n const minIndex = Math.max(activeIndex - Math.max(spv, amount), 0); // Next Slides\n\n for (let i = activeIndex + slidesPerView; i < maxIndex; i += 1) {\n if (slideExist(i)) loadInSlide(i);\n } // Prev Slides\n\n\n for (let i = minIndex; i < activeIndex; i += 1) {\n if (slideExist(i)) loadInSlide(i);\n }\n } else {\n const nextSlide = $wrapperEl.children(`.${swiperParams.slideNextClass}`);\n if (nextSlide.length > 0) loadInSlide(slideIndex(nextSlide));\n const prevSlide = $wrapperEl.children(`.${swiperParams.slidePrevClass}`);\n if (prevSlide.length > 0) loadInSlide(slideIndex(prevSlide));\n }\n }\n }\n\n function checkInViewOnLoad() {\n const window = getWindow();\n if (!swiper || swiper.destroyed) return;\n const $scrollElement = swiper.params.lazy.scrollingElement ? $(swiper.params.lazy.scrollingElement) : $(window);\n const isWindow = $scrollElement[0] === window;\n const scrollElementWidth = isWindow ? window.innerWidth : $scrollElement[0].offsetWidth;\n const scrollElementHeight = isWindow ? window.innerHeight : $scrollElement[0].offsetHeight;\n const swiperOffset = swiper.$el.offset();\n const {\n rtlTranslate: rtl\n } = swiper;\n let inView = false;\n if (rtl) swiperOffset.left -= swiper.$el[0].scrollLeft;\n const swiperCoord = [[swiperOffset.left, swiperOffset.top], [swiperOffset.left + swiper.width, swiperOffset.top], [swiperOffset.left, swiperOffset.top + swiper.height], [swiperOffset.left + swiper.width, swiperOffset.top + swiper.height]];\n\n for (let i = 0; i < swiperCoord.length; i += 1) {\n const point = swiperCoord[i];\n\n if (point[0] >= 0 && point[0] <= scrollElementWidth && point[1] >= 0 && point[1] <= scrollElementHeight) {\n if (point[0] === 0 && point[1] === 0) continue; // eslint-disable-line\n\n inView = true;\n }\n }\n\n const passiveListener = swiper.touchEvents.start === 'touchstart' && swiper.support.passiveListener && swiper.params.passiveListeners ? {\n passive: true,\n capture: false\n } : false;\n\n if (inView) {\n load();\n $scrollElement.off('scroll', checkInViewOnLoad, passiveListener);\n } else if (!scrollHandlerAttached) {\n scrollHandlerAttached = true;\n $scrollElement.on('scroll', checkInViewOnLoad, passiveListener);\n }\n }\n\n on('beforeInit', () => {\n if (swiper.params.lazy.enabled && swiper.params.preloadImages) {\n swiper.params.preloadImages = false;\n }\n });\n on('init', () => {\n if (swiper.params.lazy.enabled) {\n if (swiper.params.lazy.checkInView) {\n checkInViewOnLoad();\n } else {\n load();\n }\n }\n });\n on('scroll', () => {\n if (swiper.params.freeMode && swiper.params.freeMode.enabled && !swiper.params.freeMode.sticky) {\n load();\n }\n });\n on('scrollbarDragMove resize _freeModeNoMomentumRelease', () => {\n if (swiper.params.lazy.enabled) {\n if (swiper.params.lazy.checkInView) {\n checkInViewOnLoad();\n } else {\n load();\n }\n }\n });\n on('transitionStart', () => {\n if (swiper.params.lazy.enabled) {\n if (swiper.params.lazy.loadOnTransitionStart || !swiper.params.lazy.loadOnTransitionStart && !initialImageLoaded) {\n if (swiper.params.lazy.checkInView) {\n checkInViewOnLoad();\n } else {\n load();\n }\n }\n }\n });\n on('transitionEnd', () => {\n if (swiper.params.lazy.enabled && !swiper.params.lazy.loadOnTransitionStart) {\n if (swiper.params.lazy.checkInView) {\n checkInViewOnLoad();\n } else {\n load();\n }\n }\n });\n on('slideChange', () => {\n const {\n lazy,\n cssMode,\n watchSlidesProgress,\n touchReleaseOnEdges,\n resistanceRatio\n } = swiper.params;\n\n if (lazy.enabled && (cssMode || watchSlidesProgress && (touchReleaseOnEdges || resistanceRatio === 0))) {\n load();\n }\n });\n Object.assign(swiper.lazy, {\n load,\n loadInSlide\n });\n}","import appendSlide from './methods/appendSlide.js';\nimport prependSlide from './methods/prependSlide.js';\nimport addSlide from './methods/addSlide.js';\nimport removeSlide from './methods/removeSlide.js';\nimport removeAllSlides from './methods/removeAllSlides.js';\nexport default function Manipulation({\n swiper\n}) {\n Object.assign(swiper, {\n appendSlide: appendSlide.bind(swiper),\n prependSlide: prependSlide.bind(swiper),\n addSlide: addSlide.bind(swiper),\n removeSlide: removeSlide.bind(swiper),\n removeAllSlides: removeAllSlides.bind(swiper)\n });\n}","export default function addSlide(index, slides) {\n const swiper = this;\n const {\n $wrapperEl,\n params,\n activeIndex\n } = swiper;\n let activeIndexBuffer = activeIndex;\n\n if (params.loop) {\n activeIndexBuffer -= swiper.loopedSlides;\n swiper.loopDestroy();\n swiper.slides = $wrapperEl.children(`.${params.slideClass}`);\n }\n\n const baseLength = swiper.slides.length;\n\n if (index <= 0) {\n swiper.prependSlide(slides);\n return;\n }\n\n if (index >= baseLength) {\n swiper.appendSlide(slides);\n return;\n }\n\n let newActiveIndex = activeIndexBuffer > index ? activeIndexBuffer + 1 : activeIndexBuffer;\n const slidesBuffer = [];\n\n for (let i = baseLength - 1; i >= index; i -= 1) {\n const currentSlide = swiper.slides.eq(i);\n currentSlide.remove();\n slidesBuffer.unshift(currentSlide);\n }\n\n if (typeof slides === 'object' && 'length' in slides) {\n for (let i = 0; i < slides.length; i += 1) {\n if (slides[i]) $wrapperEl.append(slides[i]);\n }\n\n newActiveIndex = activeIndexBuffer > index ? activeIndexBuffer + slides.length : activeIndexBuffer;\n } else {\n $wrapperEl.append(slides);\n }\n\n for (let i = 0; i < slidesBuffer.length; i += 1) {\n $wrapperEl.append(slidesBuffer[i]);\n }\n\n if (params.loop) {\n swiper.loopCreate();\n }\n\n if (!params.observer) {\n swiper.update();\n }\n\n if (params.loop) {\n swiper.slideTo(newActiveIndex + swiper.loopedSlides, 0, false);\n } else {\n swiper.slideTo(newActiveIndex, 0, false);\n }\n}","export default function appendSlide(slides) {\n const swiper = this;\n const {\n $wrapperEl,\n params\n } = swiper;\n\n if (params.loop) {\n swiper.loopDestroy();\n }\n\n if (typeof slides === 'object' && 'length' in slides) {\n for (let i = 0; i < slides.length; i += 1) {\n if (slides[i]) $wrapperEl.append(slides[i]);\n }\n } else {\n $wrapperEl.append(slides);\n }\n\n if (params.loop) {\n swiper.loopCreate();\n }\n\n if (!params.observer) {\n swiper.update();\n }\n}","export default function prependSlide(slides) {\n const swiper = this;\n const {\n params,\n $wrapperEl,\n activeIndex\n } = swiper;\n\n if (params.loop) {\n swiper.loopDestroy();\n }\n\n let newActiveIndex = activeIndex + 1;\n\n if (typeof slides === 'object' && 'length' in slides) {\n for (let i = 0; i < slides.length; i += 1) {\n if (slides[i]) $wrapperEl.prepend(slides[i]);\n }\n\n newActiveIndex = activeIndex + slides.length;\n } else {\n $wrapperEl.prepend(slides);\n }\n\n if (params.loop) {\n swiper.loopCreate();\n }\n\n if (!params.observer) {\n swiper.update();\n }\n\n swiper.slideTo(newActiveIndex, 0, false);\n}","export default function removeAllSlides() {\n const swiper = this;\n const slidesIndexes = [];\n\n for (let i = 0; i < swiper.slides.length; i += 1) {\n slidesIndexes.push(i);\n }\n\n swiper.removeSlide(slidesIndexes);\n}","export default function removeSlide(slidesIndexes) {\n const swiper = this;\n const {\n params,\n $wrapperEl,\n activeIndex\n } = swiper;\n let activeIndexBuffer = activeIndex;\n\n if (params.loop) {\n activeIndexBuffer -= swiper.loopedSlides;\n swiper.loopDestroy();\n swiper.slides = $wrapperEl.children(`.${params.slideClass}`);\n }\n\n let newActiveIndex = activeIndexBuffer;\n let indexToRemove;\n\n if (typeof slidesIndexes === 'object' && 'length' in slidesIndexes) {\n for (let i = 0; i < slidesIndexes.length; i += 1) {\n indexToRemove = slidesIndexes[i];\n if (swiper.slides[indexToRemove]) swiper.slides.eq(indexToRemove).remove();\n if (indexToRemove < newActiveIndex) newActiveIndex -= 1;\n }\n\n newActiveIndex = Math.max(newActiveIndex, 0);\n } else {\n indexToRemove = slidesIndexes;\n if (swiper.slides[indexToRemove]) swiper.slides.eq(indexToRemove).remove();\n if (indexToRemove < newActiveIndex) newActiveIndex -= 1;\n newActiveIndex = Math.max(newActiveIndex, 0);\n }\n\n if (params.loop) {\n swiper.loopCreate();\n }\n\n if (!params.observer) {\n swiper.update();\n }\n\n if (params.loop) {\n swiper.slideTo(newActiveIndex + swiper.loopedSlides, 0, false);\n } else {\n swiper.slideTo(newActiveIndex, 0, false);\n }\n}","/* eslint-disable consistent-return */\nimport { getWindow } from 'ssr-window';\nimport $ from '../../shared/dom.js';\nimport { now, nextTick } from '../../shared/utils.js';\nexport default function Mousewheel({\n swiper,\n extendParams,\n on,\n emit\n}) {\n const window = getWindow();\n extendParams({\n mousewheel: {\n enabled: false,\n releaseOnEdges: false,\n invert: false,\n forceToAxis: false,\n sensitivity: 1,\n eventsTarget: 'container',\n thresholdDelta: null,\n thresholdTime: null\n }\n });\n swiper.mousewheel = {\n enabled: false\n };\n let timeout;\n let lastScrollTime = now();\n let lastEventBeforeSnap;\n const recentWheelEvents = [];\n\n function normalize(e) {\n // Reasonable defaults\n const PIXEL_STEP = 10;\n const LINE_HEIGHT = 40;\n const PAGE_HEIGHT = 800;\n let sX = 0;\n let sY = 0; // spinX, spinY\n\n let pX = 0;\n let pY = 0; // pixelX, pixelY\n // Legacy\n\n if ('detail' in e) {\n sY = e.detail;\n }\n\n if ('wheelDelta' in e) {\n sY = -e.wheelDelta / 120;\n }\n\n if ('wheelDeltaY' in e) {\n sY = -e.wheelDeltaY / 120;\n }\n\n if ('wheelDeltaX' in e) {\n sX = -e.wheelDeltaX / 120;\n } // side scrolling on FF with DOMMouseScroll\n\n\n if ('axis' in e && e.axis === e.HORIZONTAL_AXIS) {\n sX = sY;\n sY = 0;\n }\n\n pX = sX * PIXEL_STEP;\n pY = sY * PIXEL_STEP;\n\n if ('deltaY' in e) {\n pY = e.deltaY;\n }\n\n if ('deltaX' in e) {\n pX = e.deltaX;\n }\n\n if (e.shiftKey && !pX) {\n // if user scrolls with shift he wants horizontal scroll\n pX = pY;\n pY = 0;\n }\n\n if ((pX || pY) && e.deltaMode) {\n if (e.deltaMode === 1) {\n // delta in LINE units\n pX *= LINE_HEIGHT;\n pY *= LINE_HEIGHT;\n } else {\n // delta in PAGE units\n pX *= PAGE_HEIGHT;\n pY *= PAGE_HEIGHT;\n }\n } // Fall-back if spin cannot be determined\n\n\n if (pX && !sX) {\n sX = pX < 1 ? -1 : 1;\n }\n\n if (pY && !sY) {\n sY = pY < 1 ? -1 : 1;\n }\n\n return {\n spinX: sX,\n spinY: sY,\n pixelX: pX,\n pixelY: pY\n };\n }\n\n function handleMouseEnter() {\n if (!swiper.enabled) return;\n swiper.mouseEntered = true;\n }\n\n function handleMouseLeave() {\n if (!swiper.enabled) return;\n swiper.mouseEntered = false;\n }\n\n function animateSlider(newEvent) {\n if (swiper.params.mousewheel.thresholdDelta && newEvent.delta < swiper.params.mousewheel.thresholdDelta) {\n // Prevent if delta of wheel scroll delta is below configured threshold\n return false;\n }\n\n if (swiper.params.mousewheel.thresholdTime && now() - lastScrollTime < swiper.params.mousewheel.thresholdTime) {\n // Prevent if time between scrolls is below configured threshold\n return false;\n } // If the movement is NOT big enough and\n // if the last time the user scrolled was too close to the current one (avoid continuously triggering the slider):\n // Don't go any further (avoid insignificant scroll movement).\n\n\n if (newEvent.delta >= 6 && now() - lastScrollTime < 60) {\n // Return false as a default\n return true;\n } // If user is scrolling towards the end:\n // If the slider hasn't hit the latest slide or\n // if the slider is a loop and\n // if the slider isn't moving right now:\n // Go to next slide and\n // emit a scroll event.\n // Else (the user is scrolling towards the beginning) and\n // if the slider hasn't hit the first slide or\n // if the slider is a loop and\n // if the slider isn't moving right now:\n // Go to prev slide and\n // emit a scroll event.\n\n\n if (newEvent.direction < 0) {\n if ((!swiper.isEnd || swiper.params.loop) && !swiper.animating) {\n swiper.slideNext();\n emit('scroll', newEvent.raw);\n }\n } else if ((!swiper.isBeginning || swiper.params.loop) && !swiper.animating) {\n swiper.slidePrev();\n emit('scroll', newEvent.raw);\n } // If you got here is because an animation has been triggered so store the current time\n\n\n lastScrollTime = new window.Date().getTime(); // Return false as a default\n\n return false;\n }\n\n function releaseScroll(newEvent) {\n const params = swiper.params.mousewheel;\n\n if (newEvent.direction < 0) {\n if (swiper.isEnd && !swiper.params.loop && params.releaseOnEdges) {\n // Return true to animate scroll on edges\n return true;\n }\n } else if (swiper.isBeginning && !swiper.params.loop && params.releaseOnEdges) {\n // Return true to animate scroll on edges\n return true;\n }\n\n return false;\n }\n\n function handle(event) {\n let e = event;\n let disableParentSwiper = true;\n if (!swiper.enabled) return;\n const params = swiper.params.mousewheel;\n\n if (swiper.params.cssMode) {\n e.preventDefault();\n }\n\n let target = swiper.$el;\n\n if (swiper.params.mousewheel.eventsTarget !== 'container') {\n target = $(swiper.params.mousewheel.eventsTarget);\n }\n\n if (!swiper.mouseEntered && !target[0].contains(e.target) && !params.releaseOnEdges) return true;\n if (e.originalEvent) e = e.originalEvent; // jquery fix\n\n let delta = 0;\n const rtlFactor = swiper.rtlTranslate ? -1 : 1;\n const data = normalize(e);\n\n if (params.forceToAxis) {\n if (swiper.isHorizontal()) {\n if (Math.abs(data.pixelX) > Math.abs(data.pixelY)) delta = -data.pixelX * rtlFactor;else return true;\n } else if (Math.abs(data.pixelY) > Math.abs(data.pixelX)) delta = -data.pixelY;else return true;\n } else {\n delta = Math.abs(data.pixelX) > Math.abs(data.pixelY) ? -data.pixelX * rtlFactor : -data.pixelY;\n }\n\n if (delta === 0) return true;\n if (params.invert) delta = -delta; // Get the scroll positions\n\n let positions = swiper.getTranslate() + delta * params.sensitivity;\n if (positions >= swiper.minTranslate()) positions = swiper.minTranslate();\n if (positions <= swiper.maxTranslate()) positions = swiper.maxTranslate(); // When loop is true:\n // the disableParentSwiper will be true.\n // When loop is false:\n // if the scroll positions is not on edge,\n // then the disableParentSwiper will be true.\n // if the scroll on edge positions,\n // then the disableParentSwiper will be false.\n\n disableParentSwiper = swiper.params.loop ? true : !(positions === swiper.minTranslate() || positions === swiper.maxTranslate());\n if (disableParentSwiper && swiper.params.nested) e.stopPropagation();\n\n if (!swiper.params.freeMode || !swiper.params.freeMode.enabled) {\n // Register the new event in a variable which stores the relevant data\n const newEvent = {\n time: now(),\n delta: Math.abs(delta),\n direction: Math.sign(delta),\n raw: event\n }; // Keep the most recent events\n\n if (recentWheelEvents.length >= 2) {\n recentWheelEvents.shift(); // only store the last N events\n }\n\n const prevEvent = recentWheelEvents.length ? recentWheelEvents[recentWheelEvents.length - 1] : undefined;\n recentWheelEvents.push(newEvent); // If there is at least one previous recorded event:\n // If direction has changed or\n // if the scroll is quicker than the previous one:\n // Animate the slider.\n // Else (this is the first time the wheel is moved):\n // Animate the slider.\n\n if (prevEvent) {\n if (newEvent.direction !== prevEvent.direction || newEvent.delta > prevEvent.delta || newEvent.time > prevEvent.time + 150) {\n animateSlider(newEvent);\n }\n } else {\n animateSlider(newEvent);\n } // If it's time to release the scroll:\n // Return now so you don't hit the preventDefault.\n\n\n if (releaseScroll(newEvent)) {\n return true;\n }\n } else {\n // Freemode or scrollContainer:\n // If we recently snapped after a momentum scroll, then ignore wheel events\n // to give time for the deceleration to finish. Stop ignoring after 500 msecs\n // or if it's a new scroll (larger delta or inverse sign as last event before\n // an end-of-momentum snap).\n const newEvent = {\n time: now(),\n delta: Math.abs(delta),\n direction: Math.sign(delta)\n };\n const ignoreWheelEvents = lastEventBeforeSnap && newEvent.time < lastEventBeforeSnap.time + 500 && newEvent.delta <= lastEventBeforeSnap.delta && newEvent.direction === lastEventBeforeSnap.direction;\n\n if (!ignoreWheelEvents) {\n lastEventBeforeSnap = undefined;\n\n if (swiper.params.loop) {\n swiper.loopFix();\n }\n\n let position = swiper.getTranslate() + delta * params.sensitivity;\n const wasBeginning = swiper.isBeginning;\n const wasEnd = swiper.isEnd;\n if (position >= swiper.minTranslate()) position = swiper.minTranslate();\n if (position <= swiper.maxTranslate()) position = swiper.maxTranslate();\n swiper.setTransition(0);\n swiper.setTranslate(position);\n swiper.updateProgress();\n swiper.updateActiveIndex();\n swiper.updateSlidesClasses();\n\n if (!wasBeginning && swiper.isBeginning || !wasEnd && swiper.isEnd) {\n swiper.updateSlidesClasses();\n }\n\n if (swiper.params.freeMode.sticky) {\n // When wheel scrolling starts with sticky (aka snap) enabled, then detect\n // the end of a momentum scroll by storing recent (N=15?) wheel events.\n // 1. do all N events have decreasing or same (absolute value) delta?\n // 2. did all N events arrive in the last M (M=500?) msecs?\n // 3. does the earliest event have an (absolute value) delta that's\n // at least P (P=1?) larger than the most recent event's delta?\n // 4. does the latest event have a delta that's smaller than Q (Q=6?) pixels?\n // If 1-4 are \"yes\" then we're near the end of a momentum scroll deceleration.\n // Snap immediately and ignore remaining wheel events in this scroll.\n // See comment above for \"remaining wheel events in this scroll\" determination.\n // If 1-4 aren't satisfied, then wait to snap until 500ms after the last event.\n clearTimeout(timeout);\n timeout = undefined;\n\n if (recentWheelEvents.length >= 15) {\n recentWheelEvents.shift(); // only store the last N events\n }\n\n const prevEvent = recentWheelEvents.length ? recentWheelEvents[recentWheelEvents.length - 1] : undefined;\n const firstEvent = recentWheelEvents[0];\n recentWheelEvents.push(newEvent);\n\n if (prevEvent && (newEvent.delta > prevEvent.delta || newEvent.direction !== prevEvent.direction)) {\n // Increasing or reverse-sign delta means the user started scrolling again. Clear the wheel event log.\n recentWheelEvents.splice(0);\n } else if (recentWheelEvents.length >= 15 && newEvent.time - firstEvent.time < 500 && firstEvent.delta - newEvent.delta >= 1 && newEvent.delta <= 6) {\n // We're at the end of the deceleration of a momentum scroll, so there's no need\n // to wait for more events. Snap ASAP on the next tick.\n // Also, because there's some remaining momentum we'll bias the snap in the\n // direction of the ongoing scroll because it's better UX for the scroll to snap\n // in the same direction as the scroll instead of reversing to snap. Therefore,\n // if it's already scrolled more than 20% in the current direction, keep going.\n const snapToThreshold = delta > 0 ? 0.8 : 0.2;\n lastEventBeforeSnap = newEvent;\n recentWheelEvents.splice(0);\n timeout = nextTick(() => {\n swiper.slideToClosest(swiper.params.speed, true, undefined, snapToThreshold);\n }, 0); // no delay; move on next tick\n }\n\n if (!timeout) {\n // if we get here, then we haven't detected the end of a momentum scroll, so\n // we'll consider a scroll \"complete\" when there haven't been any wheel events\n // for 500ms.\n timeout = nextTick(() => {\n const snapToThreshold = 0.5;\n lastEventBeforeSnap = newEvent;\n recentWheelEvents.splice(0);\n swiper.slideToClosest(swiper.params.speed, true, undefined, snapToThreshold);\n }, 500);\n }\n } // Emit event\n\n\n if (!ignoreWheelEvents) emit('scroll', e); // Stop autoplay\n\n if (swiper.params.autoplay && swiper.params.autoplayDisableOnInteraction) swiper.autoplay.stop(); // Return page scroll on edge positions\n\n if (position === swiper.minTranslate() || position === swiper.maxTranslate()) return true;\n }\n }\n\n if (e.preventDefault) e.preventDefault();else e.returnValue = false;\n return false;\n }\n\n function events(method) {\n let target = swiper.$el;\n\n if (swiper.params.mousewheel.eventsTarget !== 'container') {\n target = $(swiper.params.mousewheel.eventsTarget);\n }\n\n target[method]('mouseenter', handleMouseEnter);\n target[method]('mouseleave', handleMouseLeave);\n target[method]('wheel', handle);\n }\n\n function enable() {\n if (swiper.params.cssMode) {\n swiper.wrapperEl.removeEventListener('wheel', handle);\n return true;\n }\n\n if (swiper.mousewheel.enabled) return false;\n events('on');\n swiper.mousewheel.enabled = true;\n return true;\n }\n\n function disable() {\n if (swiper.params.cssMode) {\n swiper.wrapperEl.addEventListener(event, handle);\n return true;\n }\n\n if (!swiper.mousewheel.enabled) return false;\n events('off');\n swiper.mousewheel.enabled = false;\n return true;\n }\n\n on('init', () => {\n if (!swiper.params.mousewheel.enabled && swiper.params.cssMode) {\n disable();\n }\n\n if (swiper.params.mousewheel.enabled) enable();\n });\n on('destroy', () => {\n if (swiper.params.cssMode) {\n enable();\n }\n\n if (swiper.mousewheel.enabled) disable();\n });\n Object.assign(swiper.mousewheel, {\n enable,\n disable\n });\n}","import createElementIfNotDefined from '../../shared/create-element-if-not-defined.js';\nimport $ from '../../shared/dom.js';\nexport default function Navigation({\n swiper,\n extendParams,\n on,\n emit\n}) {\n extendParams({\n navigation: {\n nextEl: null,\n prevEl: null,\n hideOnClick: false,\n disabledClass: 'swiper-button-disabled',\n hiddenClass: 'swiper-button-hidden',\n lockClass: 'swiper-button-lock'\n }\n });\n swiper.navigation = {\n nextEl: null,\n $nextEl: null,\n prevEl: null,\n $prevEl: null\n };\n\n function getEl(el) {\n let $el;\n\n if (el) {\n $el = $(el);\n\n if (swiper.params.uniqueNavElements && typeof el === 'string' && $el.length > 1 && swiper.$el.find(el).length === 1) {\n $el = swiper.$el.find(el);\n }\n }\n\n return $el;\n }\n\n function toggleEl($el, disabled) {\n const params = swiper.params.navigation;\n\n if ($el && $el.length > 0) {\n $el[disabled ? 'addClass' : 'removeClass'](params.disabledClass);\n if ($el[0] && $el[0].tagName === 'BUTTON') $el[0].disabled = disabled;\n\n if (swiper.params.watchOverflow && swiper.enabled) {\n $el[swiper.isLocked ? 'addClass' : 'removeClass'](params.lockClass);\n }\n }\n }\n\n function update() {\n // Update Navigation Buttons\n if (swiper.params.loop) return;\n const {\n $nextEl,\n $prevEl\n } = swiper.navigation;\n toggleEl($prevEl, swiper.isBeginning && !swiper.params.rewind);\n toggleEl($nextEl, swiper.isEnd && !swiper.params.rewind);\n }\n\n function onPrevClick(e) {\n e.preventDefault();\n if (swiper.isBeginning && !swiper.params.loop && !swiper.params.rewind) return;\n swiper.slidePrev();\n }\n\n function onNextClick(e) {\n e.preventDefault();\n if (swiper.isEnd && !swiper.params.loop && !swiper.params.rewind) return;\n swiper.slideNext();\n }\n\n function init() {\n const params = swiper.params.navigation;\n swiper.params.navigation = createElementIfNotDefined(swiper, swiper.originalParams.navigation, swiper.params.navigation, {\n nextEl: 'swiper-button-next',\n prevEl: 'swiper-button-prev'\n });\n if (!(params.nextEl || params.prevEl)) return;\n const $nextEl = getEl(params.nextEl);\n const $prevEl = getEl(params.prevEl);\n\n if ($nextEl && $nextEl.length > 0) {\n $nextEl.on('click', onNextClick);\n }\n\n if ($prevEl && $prevEl.length > 0) {\n $prevEl.on('click', onPrevClick);\n }\n\n Object.assign(swiper.navigation, {\n $nextEl,\n nextEl: $nextEl && $nextEl[0],\n $prevEl,\n prevEl: $prevEl && $prevEl[0]\n });\n\n if (!swiper.enabled) {\n if ($nextEl) $nextEl.addClass(params.lockClass);\n if ($prevEl) $prevEl.addClass(params.lockClass);\n }\n }\n\n function destroy() {\n const {\n $nextEl,\n $prevEl\n } = swiper.navigation;\n\n if ($nextEl && $nextEl.length) {\n $nextEl.off('click', onNextClick);\n $nextEl.removeClass(swiper.params.navigation.disabledClass);\n }\n\n if ($prevEl && $prevEl.length) {\n $prevEl.off('click', onPrevClick);\n $prevEl.removeClass(swiper.params.navigation.disabledClass);\n }\n }\n\n on('init', () => {\n init();\n update();\n });\n on('toEdge fromEdge lock unlock', () => {\n update();\n });\n on('destroy', () => {\n destroy();\n });\n on('enable disable', () => {\n const {\n $nextEl,\n $prevEl\n } = swiper.navigation;\n\n if ($nextEl) {\n $nextEl[swiper.enabled ? 'removeClass' : 'addClass'](swiper.params.navigation.lockClass);\n }\n\n if ($prevEl) {\n $prevEl[swiper.enabled ? 'removeClass' : 'addClass'](swiper.params.navigation.lockClass);\n }\n });\n on('click', (_s, e) => {\n const {\n $nextEl,\n $prevEl\n } = swiper.navigation;\n const targetEl = e.target;\n\n if (swiper.params.navigation.hideOnClick && !$(targetEl).is($prevEl) && !$(targetEl).is($nextEl)) {\n if (swiper.pagination && swiper.params.pagination && swiper.params.pagination.clickable && (swiper.pagination.el === targetEl || swiper.pagination.el.contains(targetEl))) return;\n let isHidden;\n\n if ($nextEl) {\n isHidden = $nextEl.hasClass(swiper.params.navigation.hiddenClass);\n } else if ($prevEl) {\n isHidden = $prevEl.hasClass(swiper.params.navigation.hiddenClass);\n }\n\n if (isHidden === true) {\n emit('navigationShow');\n } else {\n emit('navigationHide');\n }\n\n if ($nextEl) {\n $nextEl.toggleClass(swiper.params.navigation.hiddenClass);\n }\n\n if ($prevEl) {\n $prevEl.toggleClass(swiper.params.navigation.hiddenClass);\n }\n }\n });\n Object.assign(swiper.navigation, {\n update,\n init,\n destroy\n });\n}","import $ from '../../shared/dom.js';\nimport classesToSelector from '../../shared/classes-to-selector.js';\nimport createElementIfNotDefined from '../../shared/create-element-if-not-defined.js';\nexport default function Pagination({\n swiper,\n extendParams,\n on,\n emit\n}) {\n const pfx = 'swiper-pagination';\n extendParams({\n pagination: {\n el: null,\n bulletElement: 'span',\n clickable: false,\n hideOnClick: false,\n renderBullet: null,\n renderProgressbar: null,\n renderFraction: null,\n renderCustom: null,\n progressbarOpposite: false,\n type: 'bullets',\n // 'bullets' or 'progressbar' or 'fraction' or 'custom'\n dynamicBullets: false,\n dynamicMainBullets: 1,\n formatFractionCurrent: number => number,\n formatFractionTotal: number => number,\n bulletClass: `${pfx}-bullet`,\n bulletActiveClass: `${pfx}-bullet-active`,\n modifierClass: `${pfx}-`,\n currentClass: `${pfx}-current`,\n totalClass: `${pfx}-total`,\n hiddenClass: `${pfx}-hidden`,\n progressbarFillClass: `${pfx}-progressbar-fill`,\n progressbarOppositeClass: `${pfx}-progressbar-opposite`,\n clickableClass: `${pfx}-clickable`,\n lockClass: `${pfx}-lock`,\n horizontalClass: `${pfx}-horizontal`,\n verticalClass: `${pfx}-vertical`\n }\n });\n swiper.pagination = {\n el: null,\n $el: null,\n bullets: []\n };\n let bulletSize;\n let dynamicBulletIndex = 0;\n\n function isPaginationDisabled() {\n return !swiper.params.pagination.el || !swiper.pagination.el || !swiper.pagination.$el || swiper.pagination.$el.length === 0;\n }\n\n function setSideBullets($bulletEl, position) {\n const {\n bulletActiveClass\n } = swiper.params.pagination;\n $bulletEl[position]().addClass(`${bulletActiveClass}-${position}`)[position]().addClass(`${bulletActiveClass}-${position}-${position}`);\n }\n\n function update() {\n // Render || Update Pagination bullets/items\n const rtl = swiper.rtl;\n const params = swiper.params.pagination;\n if (isPaginationDisabled()) return;\n const slidesLength = swiper.virtual && swiper.params.virtual.enabled ? swiper.virtual.slides.length : swiper.slides.length;\n const $el = swiper.pagination.$el; // Current/Total\n\n let current;\n const total = swiper.params.loop ? Math.ceil((slidesLength - swiper.loopedSlides * 2) / swiper.params.slidesPerGroup) : swiper.snapGrid.length;\n\n if (swiper.params.loop) {\n current = Math.ceil((swiper.activeIndex - swiper.loopedSlides) / swiper.params.slidesPerGroup);\n\n if (current > slidesLength - 1 - swiper.loopedSlides * 2) {\n current -= slidesLength - swiper.loopedSlides * 2;\n }\n\n if (current > total - 1) current -= total;\n if (current < 0 && swiper.params.paginationType !== 'bullets') current = total + current;\n } else if (typeof swiper.snapIndex !== 'undefined') {\n current = swiper.snapIndex;\n } else {\n current = swiper.activeIndex || 0;\n } // Types\n\n\n if (params.type === 'bullets' && swiper.pagination.bullets && swiper.pagination.bullets.length > 0) {\n const bullets = swiper.pagination.bullets;\n let firstIndex;\n let lastIndex;\n let midIndex;\n\n if (params.dynamicBullets) {\n bulletSize = bullets.eq(0)[swiper.isHorizontal() ? 'outerWidth' : 'outerHeight'](true);\n $el.css(swiper.isHorizontal() ? 'width' : 'height', `${bulletSize * (params.dynamicMainBullets + 4)}px`);\n\n if (params.dynamicMainBullets > 1 && swiper.previousIndex !== undefined) {\n dynamicBulletIndex += current - (swiper.previousIndex - swiper.loopedSlides || 0);\n\n if (dynamicBulletIndex > params.dynamicMainBullets - 1) {\n dynamicBulletIndex = params.dynamicMainBullets - 1;\n } else if (dynamicBulletIndex < 0) {\n dynamicBulletIndex = 0;\n }\n }\n\n firstIndex = Math.max(current - dynamicBulletIndex, 0);\n lastIndex = firstIndex + (Math.min(bullets.length, params.dynamicMainBullets) - 1);\n midIndex = (lastIndex + firstIndex) / 2;\n }\n\n bullets.removeClass(['', '-next', '-next-next', '-prev', '-prev-prev', '-main'].map(suffix => `${params.bulletActiveClass}${suffix}`).join(' '));\n\n if ($el.length > 1) {\n bullets.each(bullet => {\n const $bullet = $(bullet);\n const bulletIndex = $bullet.index();\n\n if (bulletIndex === current) {\n $bullet.addClass(params.bulletActiveClass);\n }\n\n if (params.dynamicBullets) {\n if (bulletIndex >= firstIndex && bulletIndex <= lastIndex) {\n $bullet.addClass(`${params.bulletActiveClass}-main`);\n }\n\n if (bulletIndex === firstIndex) {\n setSideBullets($bullet, 'prev');\n }\n\n if (bulletIndex === lastIndex) {\n setSideBullets($bullet, 'next');\n }\n }\n });\n } else {\n const $bullet = bullets.eq(current);\n const bulletIndex = $bullet.index();\n $bullet.addClass(params.bulletActiveClass);\n\n if (params.dynamicBullets) {\n const $firstDisplayedBullet = bullets.eq(firstIndex);\n const $lastDisplayedBullet = bullets.eq(lastIndex);\n\n for (let i = firstIndex; i <= lastIndex; i += 1) {\n bullets.eq(i).addClass(`${params.bulletActiveClass}-main`);\n }\n\n if (swiper.params.loop) {\n if (bulletIndex >= bullets.length) {\n for (let i = params.dynamicMainBullets; i >= 0; i -= 1) {\n bullets.eq(bullets.length - i).addClass(`${params.bulletActiveClass}-main`);\n }\n\n bullets.eq(bullets.length - params.dynamicMainBullets - 1).addClass(`${params.bulletActiveClass}-prev`);\n } else {\n setSideBullets($firstDisplayedBullet, 'prev');\n setSideBullets($lastDisplayedBullet, 'next');\n }\n } else {\n setSideBullets($firstDisplayedBullet, 'prev');\n setSideBullets($lastDisplayedBullet, 'next');\n }\n }\n }\n\n if (params.dynamicBullets) {\n const dynamicBulletsLength = Math.min(bullets.length, params.dynamicMainBullets + 4);\n const bulletsOffset = (bulletSize * dynamicBulletsLength - bulletSize) / 2 - midIndex * bulletSize;\n const offsetProp = rtl ? 'right' : 'left';\n bullets.css(swiper.isHorizontal() ? offsetProp : 'top', `${bulletsOffset}px`);\n }\n }\n\n if (params.type === 'fraction') {\n $el.find(classesToSelector(params.currentClass)).text(params.formatFractionCurrent(current + 1));\n $el.find(classesToSelector(params.totalClass)).text(params.formatFractionTotal(total));\n }\n\n if (params.type === 'progressbar') {\n let progressbarDirection;\n\n if (params.progressbarOpposite) {\n progressbarDirection = swiper.isHorizontal() ? 'vertical' : 'horizontal';\n } else {\n progressbarDirection = swiper.isHorizontal() ? 'horizontal' : 'vertical';\n }\n\n const scale = (current + 1) / total;\n let scaleX = 1;\n let scaleY = 1;\n\n if (progressbarDirection === 'horizontal') {\n scaleX = scale;\n } else {\n scaleY = scale;\n }\n\n $el.find(classesToSelector(params.progressbarFillClass)).transform(`translate3d(0,0,0) scaleX(${scaleX}) scaleY(${scaleY})`).transition(swiper.params.speed);\n }\n\n if (params.type === 'custom' && params.renderCustom) {\n $el.html(params.renderCustom(swiper, current + 1, total));\n emit('paginationRender', $el[0]);\n } else {\n emit('paginationUpdate', $el[0]);\n }\n\n if (swiper.params.watchOverflow && swiper.enabled) {\n $el[swiper.isLocked ? 'addClass' : 'removeClass'](params.lockClass);\n }\n }\n\n function render() {\n // Render Container\n const params = swiper.params.pagination;\n if (isPaginationDisabled()) return;\n const slidesLength = swiper.virtual && swiper.params.virtual.enabled ? swiper.virtual.slides.length : swiper.slides.length;\n const $el = swiper.pagination.$el;\n let paginationHTML = '';\n\n if (params.type === 'bullets') {\n let numberOfBullets = swiper.params.loop ? Math.ceil((slidesLength - swiper.loopedSlides * 2) / swiper.params.slidesPerGroup) : swiper.snapGrid.length;\n\n if (swiper.params.freeMode && swiper.params.freeMode.enabled && !swiper.params.loop && numberOfBullets > slidesLength) {\n numberOfBullets = slidesLength;\n }\n\n for (let i = 0; i < numberOfBullets; i += 1) {\n if (params.renderBullet) {\n paginationHTML += params.renderBullet.call(swiper, i, params.bulletClass);\n } else {\n paginationHTML += `<${params.bulletElement} class=\"${params.bulletClass}\">`;\n }\n }\n\n $el.html(paginationHTML);\n swiper.pagination.bullets = $el.find(classesToSelector(params.bulletClass));\n }\n\n if (params.type === 'fraction') {\n if (params.renderFraction) {\n paginationHTML = params.renderFraction.call(swiper, params.currentClass, params.totalClass);\n } else {\n paginationHTML = `` + ' / ' + ``;\n }\n\n $el.html(paginationHTML);\n }\n\n if (params.type === 'progressbar') {\n if (params.renderProgressbar) {\n paginationHTML = params.renderProgressbar.call(swiper, params.progressbarFillClass);\n } else {\n paginationHTML = ``;\n }\n\n $el.html(paginationHTML);\n }\n\n if (params.type !== 'custom') {\n emit('paginationRender', swiper.pagination.$el[0]);\n }\n }\n\n function init() {\n swiper.params.pagination = createElementIfNotDefined(swiper, swiper.originalParams.pagination, swiper.params.pagination, {\n el: 'swiper-pagination'\n });\n const params = swiper.params.pagination;\n if (!params.el) return;\n let $el = $(params.el);\n if ($el.length === 0) return;\n\n if (swiper.params.uniqueNavElements && typeof params.el === 'string' && $el.length > 1) {\n $el = swiper.$el.find(params.el); // check if it belongs to another nested Swiper\n\n if ($el.length > 1) {\n $el = $el.filter(el => {\n if ($(el).parents('.swiper')[0] !== swiper.el) return false;\n return true;\n });\n }\n }\n\n if (params.type === 'bullets' && params.clickable) {\n $el.addClass(params.clickableClass);\n }\n\n $el.addClass(params.modifierClass + params.type);\n $el.addClass(params.modifierClass + swiper.params.direction);\n\n if (params.type === 'bullets' && params.dynamicBullets) {\n $el.addClass(`${params.modifierClass}${params.type}-dynamic`);\n dynamicBulletIndex = 0;\n\n if (params.dynamicMainBullets < 1) {\n params.dynamicMainBullets = 1;\n }\n }\n\n if (params.type === 'progressbar' && params.progressbarOpposite) {\n $el.addClass(params.progressbarOppositeClass);\n }\n\n if (params.clickable) {\n $el.on('click', classesToSelector(params.bulletClass), function onClick(e) {\n e.preventDefault();\n let index = $(this).index() * swiper.params.slidesPerGroup;\n if (swiper.params.loop) index += swiper.loopedSlides;\n swiper.slideTo(index);\n });\n }\n\n Object.assign(swiper.pagination, {\n $el,\n el: $el[0]\n });\n\n if (!swiper.enabled) {\n $el.addClass(params.lockClass);\n }\n }\n\n function destroy() {\n const params = swiper.params.pagination;\n if (isPaginationDisabled()) return;\n const $el = swiper.pagination.$el;\n $el.removeClass(params.hiddenClass);\n $el.removeClass(params.modifierClass + params.type);\n $el.removeClass(params.modifierClass + swiper.params.direction);\n if (swiper.pagination.bullets && swiper.pagination.bullets.removeClass) swiper.pagination.bullets.removeClass(params.bulletActiveClass);\n\n if (params.clickable) {\n $el.off('click', classesToSelector(params.bulletClass));\n }\n }\n\n on('init', () => {\n init();\n render();\n update();\n });\n on('activeIndexChange', () => {\n if (swiper.params.loop) {\n update();\n } else if (typeof swiper.snapIndex === 'undefined') {\n update();\n }\n });\n on('snapIndexChange', () => {\n if (!swiper.params.loop) {\n update();\n }\n });\n on('slidesLengthChange', () => {\n if (swiper.params.loop) {\n render();\n update();\n }\n });\n on('snapGridLengthChange', () => {\n if (!swiper.params.loop) {\n render();\n update();\n }\n });\n on('destroy', () => {\n destroy();\n });\n on('enable disable', () => {\n const {\n $el\n } = swiper.pagination;\n\n if ($el) {\n $el[swiper.enabled ? 'removeClass' : 'addClass'](swiper.params.pagination.lockClass);\n }\n });\n on('lock unlock', () => {\n update();\n });\n on('click', (_s, e) => {\n const targetEl = e.target;\n const {\n $el\n } = swiper.pagination;\n\n if (swiper.params.pagination.el && swiper.params.pagination.hideOnClick && $el.length > 0 && !$(targetEl).hasClass(swiper.params.pagination.bulletClass)) {\n if (swiper.navigation && (swiper.navigation.nextEl && targetEl === swiper.navigation.nextEl || swiper.navigation.prevEl && targetEl === swiper.navigation.prevEl)) return;\n const isHidden = $el.hasClass(swiper.params.pagination.hiddenClass);\n\n if (isHidden === true) {\n emit('paginationShow');\n } else {\n emit('paginationHide');\n }\n\n $el.toggleClass(swiper.params.pagination.hiddenClass);\n }\n });\n Object.assign(swiper.pagination, {\n render,\n update,\n init,\n destroy\n });\n}","import $ from '../../shared/dom.js';\nexport default function Parallax({\n swiper,\n extendParams,\n on\n}) {\n extendParams({\n parallax: {\n enabled: false\n }\n });\n\n const setTransform = (el, progress) => {\n const {\n rtl\n } = swiper;\n const $el = $(el);\n const rtlFactor = rtl ? -1 : 1;\n const p = $el.attr('data-swiper-parallax') || '0';\n let x = $el.attr('data-swiper-parallax-x');\n let y = $el.attr('data-swiper-parallax-y');\n const scale = $el.attr('data-swiper-parallax-scale');\n const opacity = $el.attr('data-swiper-parallax-opacity');\n\n if (x || y) {\n x = x || '0';\n y = y || '0';\n } else if (swiper.isHorizontal()) {\n x = p;\n y = '0';\n } else {\n y = p;\n x = '0';\n }\n\n if (x.indexOf('%') >= 0) {\n x = `${parseInt(x, 10) * progress * rtlFactor}%`;\n } else {\n x = `${x * progress * rtlFactor}px`;\n }\n\n if (y.indexOf('%') >= 0) {\n y = `${parseInt(y, 10) * progress}%`;\n } else {\n y = `${y * progress}px`;\n }\n\n if (typeof opacity !== 'undefined' && opacity !== null) {\n const currentOpacity = opacity - (opacity - 1) * (1 - Math.abs(progress));\n $el[0].style.opacity = currentOpacity;\n }\n\n if (typeof scale === 'undefined' || scale === null) {\n $el.transform(`translate3d(${x}, ${y}, 0px)`);\n } else {\n const currentScale = scale - (scale - 1) * (1 - Math.abs(progress));\n $el.transform(`translate3d(${x}, ${y}, 0px) scale(${currentScale})`);\n }\n };\n\n const setTranslate = () => {\n const {\n $el,\n slides,\n progress,\n snapGrid\n } = swiper;\n $el.children('[data-swiper-parallax], [data-swiper-parallax-x], [data-swiper-parallax-y], [data-swiper-parallax-opacity], [data-swiper-parallax-scale]').each(el => {\n setTransform(el, progress);\n });\n slides.each((slideEl, slideIndex) => {\n let slideProgress = slideEl.progress;\n\n if (swiper.params.slidesPerGroup > 1 && swiper.params.slidesPerView !== 'auto') {\n slideProgress += Math.ceil(slideIndex / 2) - progress * (snapGrid.length - 1);\n }\n\n slideProgress = Math.min(Math.max(slideProgress, -1), 1);\n $(slideEl).find('[data-swiper-parallax], [data-swiper-parallax-x], [data-swiper-parallax-y], [data-swiper-parallax-opacity], [data-swiper-parallax-scale]').each(el => {\n setTransform(el, slideProgress);\n });\n });\n };\n\n const setTransition = (duration = swiper.params.speed) => {\n const {\n $el\n } = swiper;\n $el.find('[data-swiper-parallax], [data-swiper-parallax-x], [data-swiper-parallax-y], [data-swiper-parallax-opacity], [data-swiper-parallax-scale]').each(parallaxEl => {\n const $parallaxEl = $(parallaxEl);\n let parallaxDuration = parseInt($parallaxEl.attr('data-swiper-parallax-duration'), 10) || duration;\n if (duration === 0) parallaxDuration = 0;\n $parallaxEl.transition(parallaxDuration);\n });\n };\n\n on('beforeInit', () => {\n if (!swiper.params.parallax.enabled) return;\n swiper.params.watchSlidesProgress = true;\n swiper.originalParams.watchSlidesProgress = true;\n });\n on('init', () => {\n if (!swiper.params.parallax.enabled) return;\n setTranslate();\n });\n on('setTranslate', () => {\n if (!swiper.params.parallax.enabled) return;\n setTranslate();\n });\n on('setTransition', (_swiper, duration) => {\n if (!swiper.params.parallax.enabled) return;\n setTransition(duration);\n });\n}","import { getDocument } from 'ssr-window';\nimport $ from '../../shared/dom.js';\nimport { nextTick } from '../../shared/utils.js';\nimport createElementIfNotDefined from '../../shared/create-element-if-not-defined.js';\nexport default function Scrollbar({\n swiper,\n extendParams,\n on,\n emit\n}) {\n const document = getDocument();\n let isTouched = false;\n let timeout = null;\n let dragTimeout = null;\n let dragStartPos;\n let dragSize;\n let trackSize;\n let divider;\n extendParams({\n scrollbar: {\n el: null,\n dragSize: 'auto',\n hide: false,\n draggable: false,\n snapOnRelease: true,\n lockClass: 'swiper-scrollbar-lock',\n dragClass: 'swiper-scrollbar-drag'\n }\n });\n swiper.scrollbar = {\n el: null,\n dragEl: null,\n $el: null,\n $dragEl: null\n };\n\n function setTranslate() {\n if (!swiper.params.scrollbar.el || !swiper.scrollbar.el) return;\n const {\n scrollbar,\n rtlTranslate: rtl,\n progress\n } = swiper;\n const {\n $dragEl,\n $el\n } = scrollbar;\n const params = swiper.params.scrollbar;\n let newSize = dragSize;\n let newPos = (trackSize - dragSize) * progress;\n\n if (rtl) {\n newPos = -newPos;\n\n if (newPos > 0) {\n newSize = dragSize - newPos;\n newPos = 0;\n } else if (-newPos + dragSize > trackSize) {\n newSize = trackSize + newPos;\n }\n } else if (newPos < 0) {\n newSize = dragSize + newPos;\n newPos = 0;\n } else if (newPos + dragSize > trackSize) {\n newSize = trackSize - newPos;\n }\n\n if (swiper.isHorizontal()) {\n $dragEl.transform(`translate3d(${newPos}px, 0, 0)`);\n $dragEl[0].style.width = `${newSize}px`;\n } else {\n $dragEl.transform(`translate3d(0px, ${newPos}px, 0)`);\n $dragEl[0].style.height = `${newSize}px`;\n }\n\n if (params.hide) {\n clearTimeout(timeout);\n $el[0].style.opacity = 1;\n timeout = setTimeout(() => {\n $el[0].style.opacity = 0;\n $el.transition(400);\n }, 1000);\n }\n }\n\n function setTransition(duration) {\n if (!swiper.params.scrollbar.el || !swiper.scrollbar.el) return;\n swiper.scrollbar.$dragEl.transition(duration);\n }\n\n function updateSize() {\n if (!swiper.params.scrollbar.el || !swiper.scrollbar.el) return;\n const {\n scrollbar\n } = swiper;\n const {\n $dragEl,\n $el\n } = scrollbar;\n $dragEl[0].style.width = '';\n $dragEl[0].style.height = '';\n trackSize = swiper.isHorizontal() ? $el[0].offsetWidth : $el[0].offsetHeight;\n divider = swiper.size / (swiper.virtualSize + swiper.params.slidesOffsetBefore - (swiper.params.centeredSlides ? swiper.snapGrid[0] : 0));\n\n if (swiper.params.scrollbar.dragSize === 'auto') {\n dragSize = trackSize * divider;\n } else {\n dragSize = parseInt(swiper.params.scrollbar.dragSize, 10);\n }\n\n if (swiper.isHorizontal()) {\n $dragEl[0].style.width = `${dragSize}px`;\n } else {\n $dragEl[0].style.height = `${dragSize}px`;\n }\n\n if (divider >= 1) {\n $el[0].style.display = 'none';\n } else {\n $el[0].style.display = '';\n }\n\n if (swiper.params.scrollbar.hide) {\n $el[0].style.opacity = 0;\n }\n\n if (swiper.params.watchOverflow && swiper.enabled) {\n scrollbar.$el[swiper.isLocked ? 'addClass' : 'removeClass'](swiper.params.scrollbar.lockClass);\n }\n }\n\n function getPointerPosition(e) {\n if (swiper.isHorizontal()) {\n return e.type === 'touchstart' || e.type === 'touchmove' ? e.targetTouches[0].clientX : e.clientX;\n }\n\n return e.type === 'touchstart' || e.type === 'touchmove' ? e.targetTouches[0].clientY : e.clientY;\n }\n\n function setDragPosition(e) {\n const {\n scrollbar,\n rtlTranslate: rtl\n } = swiper;\n const {\n $el\n } = scrollbar;\n let positionRatio;\n positionRatio = (getPointerPosition(e) - $el.offset()[swiper.isHorizontal() ? 'left' : 'top'] - (dragStartPos !== null ? dragStartPos : dragSize / 2)) / (trackSize - dragSize);\n positionRatio = Math.max(Math.min(positionRatio, 1), 0);\n\n if (rtl) {\n positionRatio = 1 - positionRatio;\n }\n\n const position = swiper.minTranslate() + (swiper.maxTranslate() - swiper.minTranslate()) * positionRatio;\n swiper.updateProgress(position);\n swiper.setTranslate(position);\n swiper.updateActiveIndex();\n swiper.updateSlidesClasses();\n }\n\n function onDragStart(e) {\n const params = swiper.params.scrollbar;\n const {\n scrollbar,\n $wrapperEl\n } = swiper;\n const {\n $el,\n $dragEl\n } = scrollbar;\n isTouched = true;\n dragStartPos = e.target === $dragEl[0] || e.target === $dragEl ? getPointerPosition(e) - e.target.getBoundingClientRect()[swiper.isHorizontal() ? 'left' : 'top'] : null;\n e.preventDefault();\n e.stopPropagation();\n $wrapperEl.transition(100);\n $dragEl.transition(100);\n setDragPosition(e);\n clearTimeout(dragTimeout);\n $el.transition(0);\n\n if (params.hide) {\n $el.css('opacity', 1);\n }\n\n if (swiper.params.cssMode) {\n swiper.$wrapperEl.css('scroll-snap-type', 'none');\n }\n\n emit('scrollbarDragStart', e);\n }\n\n function onDragMove(e) {\n const {\n scrollbar,\n $wrapperEl\n } = swiper;\n const {\n $el,\n $dragEl\n } = scrollbar;\n if (!isTouched) return;\n if (e.preventDefault) e.preventDefault();else e.returnValue = false;\n setDragPosition(e);\n $wrapperEl.transition(0);\n $el.transition(0);\n $dragEl.transition(0);\n emit('scrollbarDragMove', e);\n }\n\n function onDragEnd(e) {\n const params = swiper.params.scrollbar;\n const {\n scrollbar,\n $wrapperEl\n } = swiper;\n const {\n $el\n } = scrollbar;\n if (!isTouched) return;\n isTouched = false;\n\n if (swiper.params.cssMode) {\n swiper.$wrapperEl.css('scroll-snap-type', '');\n $wrapperEl.transition('');\n }\n\n if (params.hide) {\n clearTimeout(dragTimeout);\n dragTimeout = nextTick(() => {\n $el.css('opacity', 0);\n $el.transition(400);\n }, 1000);\n }\n\n emit('scrollbarDragEnd', e);\n\n if (params.snapOnRelease) {\n swiper.slideToClosest();\n }\n }\n\n function events(method) {\n const {\n scrollbar,\n touchEventsTouch,\n touchEventsDesktop,\n params,\n support\n } = swiper;\n const $el = scrollbar.$el;\n const target = $el[0];\n const activeListener = support.passiveListener && params.passiveListeners ? {\n passive: false,\n capture: false\n } : false;\n const passiveListener = support.passiveListener && params.passiveListeners ? {\n passive: true,\n capture: false\n } : false;\n if (!target) return;\n const eventMethod = method === 'on' ? 'addEventListener' : 'removeEventListener';\n\n if (!support.touch) {\n target[eventMethod](touchEventsDesktop.start, onDragStart, activeListener);\n document[eventMethod](touchEventsDesktop.move, onDragMove, activeListener);\n document[eventMethod](touchEventsDesktop.end, onDragEnd, passiveListener);\n } else {\n target[eventMethod](touchEventsTouch.start, onDragStart, activeListener);\n target[eventMethod](touchEventsTouch.move, onDragMove, activeListener);\n target[eventMethod](touchEventsTouch.end, onDragEnd, passiveListener);\n }\n }\n\n function enableDraggable() {\n if (!swiper.params.scrollbar.el) return;\n events('on');\n }\n\n function disableDraggable() {\n if (!swiper.params.scrollbar.el) return;\n events('off');\n }\n\n function init() {\n const {\n scrollbar,\n $el: $swiperEl\n } = swiper;\n swiper.params.scrollbar = createElementIfNotDefined(swiper, swiper.originalParams.scrollbar, swiper.params.scrollbar, {\n el: 'swiper-scrollbar'\n });\n const params = swiper.params.scrollbar;\n if (!params.el) return;\n let $el = $(params.el);\n\n if (swiper.params.uniqueNavElements && typeof params.el === 'string' && $el.length > 1 && $swiperEl.find(params.el).length === 1) {\n $el = $swiperEl.find(params.el);\n }\n\n let $dragEl = $el.find(`.${swiper.params.scrollbar.dragClass}`);\n\n if ($dragEl.length === 0) {\n $dragEl = $(`
`);\n $el.append($dragEl);\n }\n\n Object.assign(scrollbar, {\n $el,\n el: $el[0],\n $dragEl,\n dragEl: $dragEl[0]\n });\n\n if (params.draggable) {\n enableDraggable();\n }\n\n if ($el) {\n $el[swiper.enabled ? 'removeClass' : 'addClass'](swiper.params.scrollbar.lockClass);\n }\n }\n\n function destroy() {\n disableDraggable();\n }\n\n on('init', () => {\n init();\n updateSize();\n setTranslate();\n });\n on('update resize observerUpdate lock unlock', () => {\n updateSize();\n });\n on('setTranslate', () => {\n setTranslate();\n });\n on('setTransition', (_s, duration) => {\n setTransition(duration);\n });\n on('enable disable', () => {\n const {\n $el\n } = swiper.scrollbar;\n\n if ($el) {\n $el[swiper.enabled ? 'removeClass' : 'addClass'](swiper.params.scrollbar.lockClass);\n }\n });\n on('destroy', () => {\n destroy();\n });\n Object.assign(swiper.scrollbar, {\n updateSize,\n setTranslate,\n init,\n destroy\n });\n}","import { isObject } from '../../shared/utils.js';\nimport $ from '../../shared/dom.js';\nexport default function Thumb({\n swiper,\n extendParams,\n on\n}) {\n extendParams({\n thumbs: {\n swiper: null,\n multipleActiveThumbs: true,\n autoScrollOffset: 0,\n slideThumbActiveClass: 'swiper-slide-thumb-active',\n thumbsContainerClass: 'swiper-thumbs'\n }\n });\n let initialized = false;\n let swiperCreated = false;\n swiper.thumbs = {\n swiper: null\n };\n\n function onThumbClick() {\n const thumbsSwiper = swiper.thumbs.swiper;\n if (!thumbsSwiper) return;\n const clickedIndex = thumbsSwiper.clickedIndex;\n const clickedSlide = thumbsSwiper.clickedSlide;\n if (clickedSlide && $(clickedSlide).hasClass(swiper.params.thumbs.slideThumbActiveClass)) return;\n if (typeof clickedIndex === 'undefined' || clickedIndex === null) return;\n let slideToIndex;\n\n if (thumbsSwiper.params.loop) {\n slideToIndex = parseInt($(thumbsSwiper.clickedSlide).attr('data-swiper-slide-index'), 10);\n } else {\n slideToIndex = clickedIndex;\n }\n\n if (swiper.params.loop) {\n let currentIndex = swiper.activeIndex;\n\n if (swiper.slides.eq(currentIndex).hasClass(swiper.params.slideDuplicateClass)) {\n swiper.loopFix(); // eslint-disable-next-line\n\n swiper._clientLeft = swiper.$wrapperEl[0].clientLeft;\n currentIndex = swiper.activeIndex;\n }\n\n const prevIndex = swiper.slides.eq(currentIndex).prevAll(`[data-swiper-slide-index=\"${slideToIndex}\"]`).eq(0).index();\n const nextIndex = swiper.slides.eq(currentIndex).nextAll(`[data-swiper-slide-index=\"${slideToIndex}\"]`).eq(0).index();\n if (typeof prevIndex === 'undefined') slideToIndex = nextIndex;else if (typeof nextIndex === 'undefined') slideToIndex = prevIndex;else if (nextIndex - currentIndex < currentIndex - prevIndex) slideToIndex = nextIndex;else slideToIndex = prevIndex;\n }\n\n swiper.slideTo(slideToIndex);\n }\n\n function init() {\n const {\n thumbs: thumbsParams\n } = swiper.params;\n if (initialized) return false;\n initialized = true;\n const SwiperClass = swiper.constructor;\n\n if (thumbsParams.swiper instanceof SwiperClass) {\n swiper.thumbs.swiper = thumbsParams.swiper;\n Object.assign(swiper.thumbs.swiper.originalParams, {\n watchSlidesProgress: true,\n slideToClickedSlide: false\n });\n Object.assign(swiper.thumbs.swiper.params, {\n watchSlidesProgress: true,\n slideToClickedSlide: false\n });\n } else if (isObject(thumbsParams.swiper)) {\n const thumbsSwiperParams = Object.assign({}, thumbsParams.swiper);\n Object.assign(thumbsSwiperParams, {\n watchSlidesProgress: true,\n slideToClickedSlide: false\n });\n swiper.thumbs.swiper = new SwiperClass(thumbsSwiperParams);\n swiperCreated = true;\n }\n\n swiper.thumbs.swiper.$el.addClass(swiper.params.thumbs.thumbsContainerClass);\n swiper.thumbs.swiper.on('tap', onThumbClick);\n return true;\n }\n\n function update(initial) {\n const thumbsSwiper = swiper.thumbs.swiper;\n if (!thumbsSwiper) return;\n const slidesPerView = thumbsSwiper.params.slidesPerView === 'auto' ? thumbsSwiper.slidesPerViewDynamic() : thumbsSwiper.params.slidesPerView;\n const autoScrollOffset = swiper.params.thumbs.autoScrollOffset;\n const useOffset = autoScrollOffset && !thumbsSwiper.params.loop;\n\n if (swiper.realIndex !== thumbsSwiper.realIndex || useOffset) {\n let currentThumbsIndex = thumbsSwiper.activeIndex;\n let newThumbsIndex;\n let direction;\n\n if (thumbsSwiper.params.loop) {\n if (thumbsSwiper.slides.eq(currentThumbsIndex).hasClass(thumbsSwiper.params.slideDuplicateClass)) {\n thumbsSwiper.loopFix(); // eslint-disable-next-line\n\n thumbsSwiper._clientLeft = thumbsSwiper.$wrapperEl[0].clientLeft;\n currentThumbsIndex = thumbsSwiper.activeIndex;\n } // Find actual thumbs index to slide to\n\n\n const prevThumbsIndex = thumbsSwiper.slides.eq(currentThumbsIndex).prevAll(`[data-swiper-slide-index=\"${swiper.realIndex}\"]`).eq(0).index();\n const nextThumbsIndex = thumbsSwiper.slides.eq(currentThumbsIndex).nextAll(`[data-swiper-slide-index=\"${swiper.realIndex}\"]`).eq(0).index();\n\n if (typeof prevThumbsIndex === 'undefined') {\n newThumbsIndex = nextThumbsIndex;\n } else if (typeof nextThumbsIndex === 'undefined') {\n newThumbsIndex = prevThumbsIndex;\n } else if (nextThumbsIndex - currentThumbsIndex === currentThumbsIndex - prevThumbsIndex) {\n newThumbsIndex = thumbsSwiper.params.slidesPerGroup > 1 ? nextThumbsIndex : currentThumbsIndex;\n } else if (nextThumbsIndex - currentThumbsIndex < currentThumbsIndex - prevThumbsIndex) {\n newThumbsIndex = nextThumbsIndex;\n } else {\n newThumbsIndex = prevThumbsIndex;\n }\n\n direction = swiper.activeIndex > swiper.previousIndex ? 'next' : 'prev';\n } else {\n newThumbsIndex = swiper.realIndex;\n direction = newThumbsIndex > swiper.previousIndex ? 'next' : 'prev';\n }\n\n if (useOffset) {\n newThumbsIndex += direction === 'next' ? autoScrollOffset : -1 * autoScrollOffset;\n }\n\n if (thumbsSwiper.visibleSlidesIndexes && thumbsSwiper.visibleSlidesIndexes.indexOf(newThumbsIndex) < 0) {\n if (thumbsSwiper.params.centeredSlides) {\n if (newThumbsIndex > currentThumbsIndex) {\n newThumbsIndex = newThumbsIndex - Math.floor(slidesPerView / 2) + 1;\n } else {\n newThumbsIndex = newThumbsIndex + Math.floor(slidesPerView / 2) - 1;\n }\n } else if (newThumbsIndex > currentThumbsIndex && thumbsSwiper.params.slidesPerGroup === 1) {// newThumbsIndex = newThumbsIndex - slidesPerView + 1;\n }\n\n thumbsSwiper.slideTo(newThumbsIndex, initial ? 0 : undefined);\n }\n } // Activate thumbs\n\n\n let thumbsToActivate = 1;\n const thumbActiveClass = swiper.params.thumbs.slideThumbActiveClass;\n\n if (swiper.params.slidesPerView > 1 && !swiper.params.centeredSlides) {\n thumbsToActivate = swiper.params.slidesPerView;\n }\n\n if (!swiper.params.thumbs.multipleActiveThumbs) {\n thumbsToActivate = 1;\n }\n\n thumbsToActivate = Math.floor(thumbsToActivate);\n thumbsSwiper.slides.removeClass(thumbActiveClass);\n\n if (thumbsSwiper.params.loop || thumbsSwiper.params.virtual && thumbsSwiper.params.virtual.enabled) {\n for (let i = 0; i < thumbsToActivate; i += 1) {\n thumbsSwiper.$wrapperEl.children(`[data-swiper-slide-index=\"${swiper.realIndex + i}\"]`).addClass(thumbActiveClass);\n }\n } else {\n for (let i = 0; i < thumbsToActivate; i += 1) {\n thumbsSwiper.slides.eq(swiper.realIndex + i).addClass(thumbActiveClass);\n }\n }\n }\n\n on('beforeInit', () => {\n const {\n thumbs\n } = swiper.params;\n if (!thumbs || !thumbs.swiper) return;\n init();\n update(true);\n });\n on('slideChange update resize observerUpdate', () => {\n if (!swiper.thumbs.swiper) return;\n update();\n });\n on('setTransition', (_s, duration) => {\n const thumbsSwiper = swiper.thumbs.swiper;\n if (!thumbsSwiper) return;\n thumbsSwiper.setTransition(duration);\n });\n on('beforeDestroy', () => {\n const thumbsSwiper = swiper.thumbs.swiper;\n if (!thumbsSwiper) return;\n\n if (swiperCreated && thumbsSwiper) {\n thumbsSwiper.destroy();\n }\n });\n Object.assign(swiper.thumbs, {\n init,\n update\n });\n}","import $ from '../../shared/dom.js';\nimport { setCSSProperty } from '../../shared/utils.js';\nexport default function Virtual({\n swiper,\n extendParams,\n on\n}) {\n extendParams({\n virtual: {\n enabled: false,\n slides: [],\n cache: true,\n renderSlide: null,\n renderExternal: null,\n renderExternalUpdate: true,\n addSlidesBefore: 0,\n addSlidesAfter: 0\n }\n });\n let cssModeTimeout;\n swiper.virtual = {\n cache: {},\n from: undefined,\n to: undefined,\n slides: [],\n offset: 0,\n slidesGrid: []\n };\n\n function renderSlide(slide, index) {\n const params = swiper.params.virtual;\n\n if (params.cache && swiper.virtual.cache[index]) {\n return swiper.virtual.cache[index];\n }\n\n const $slideEl = params.renderSlide ? $(params.renderSlide.call(swiper, slide, index)) : $(`
${slide}
`);\n if (!$slideEl.attr('data-swiper-slide-index')) $slideEl.attr('data-swiper-slide-index', index);\n if (params.cache) swiper.virtual.cache[index] = $slideEl;\n return $slideEl;\n }\n\n function update(force) {\n const {\n slidesPerView,\n slidesPerGroup,\n centeredSlides\n } = swiper.params;\n const {\n addSlidesBefore,\n addSlidesAfter\n } = swiper.params.virtual;\n const {\n from: previousFrom,\n to: previousTo,\n slides,\n slidesGrid: previousSlidesGrid,\n offset: previousOffset\n } = swiper.virtual;\n\n if (!swiper.params.cssMode) {\n swiper.updateActiveIndex();\n }\n\n const activeIndex = swiper.activeIndex || 0;\n let offsetProp;\n if (swiper.rtlTranslate) offsetProp = 'right';else offsetProp = swiper.isHorizontal() ? 'left' : 'top';\n let slidesAfter;\n let slidesBefore;\n\n if (centeredSlides) {\n slidesAfter = Math.floor(slidesPerView / 2) + slidesPerGroup + addSlidesAfter;\n slidesBefore = Math.floor(slidesPerView / 2) + slidesPerGroup + addSlidesBefore;\n } else {\n slidesAfter = slidesPerView + (slidesPerGroup - 1) + addSlidesAfter;\n slidesBefore = slidesPerGroup + addSlidesBefore;\n }\n\n const from = Math.max((activeIndex || 0) - slidesBefore, 0);\n const to = Math.min((activeIndex || 0) + slidesAfter, slides.length - 1);\n const offset = (swiper.slidesGrid[from] || 0) - (swiper.slidesGrid[0] || 0);\n Object.assign(swiper.virtual, {\n from,\n to,\n offset,\n slidesGrid: swiper.slidesGrid\n });\n\n function onRendered() {\n swiper.updateSlides();\n swiper.updateProgress();\n swiper.updateSlidesClasses();\n\n if (swiper.lazy && swiper.params.lazy.enabled) {\n swiper.lazy.load();\n }\n }\n\n if (previousFrom === from && previousTo === to && !force) {\n if (swiper.slidesGrid !== previousSlidesGrid && offset !== previousOffset) {\n swiper.slides.css(offsetProp, `${offset}px`);\n }\n\n swiper.updateProgress();\n return;\n }\n\n if (swiper.params.virtual.renderExternal) {\n swiper.params.virtual.renderExternal.call(swiper, {\n offset,\n from,\n to,\n slides: function getSlides() {\n const slidesToRender = [];\n\n for (let i = from; i <= to; i += 1) {\n slidesToRender.push(slides[i]);\n }\n\n return slidesToRender;\n }()\n });\n\n if (swiper.params.virtual.renderExternalUpdate) {\n onRendered();\n }\n\n return;\n }\n\n const prependIndexes = [];\n const appendIndexes = [];\n\n if (force) {\n swiper.$wrapperEl.find(`.${swiper.params.slideClass}`).remove();\n } else {\n for (let i = previousFrom; i <= previousTo; i += 1) {\n if (i < from || i > to) {\n swiper.$wrapperEl.find(`.${swiper.params.slideClass}[data-swiper-slide-index=\"${i}\"]`).remove();\n }\n }\n }\n\n for (let i = 0; i < slides.length; i += 1) {\n if (i >= from && i <= to) {\n if (typeof previousTo === 'undefined' || force) {\n appendIndexes.push(i);\n } else {\n if (i > previousTo) appendIndexes.push(i);\n if (i < previousFrom) prependIndexes.push(i);\n }\n }\n }\n\n appendIndexes.forEach(index => {\n swiper.$wrapperEl.append(renderSlide(slides[index], index));\n });\n prependIndexes.sort((a, b) => b - a).forEach(index => {\n swiper.$wrapperEl.prepend(renderSlide(slides[index], index));\n });\n swiper.$wrapperEl.children('.swiper-slide').css(offsetProp, `${offset}px`);\n onRendered();\n }\n\n function appendSlide(slides) {\n if (typeof slides === 'object' && 'length' in slides) {\n for (let i = 0; i < slides.length; i += 1) {\n if (slides[i]) swiper.virtual.slides.push(slides[i]);\n }\n } else {\n swiper.virtual.slides.push(slides);\n }\n\n update(true);\n }\n\n function prependSlide(slides) {\n const activeIndex = swiper.activeIndex;\n let newActiveIndex = activeIndex + 1;\n let numberOfNewSlides = 1;\n\n if (Array.isArray(slides)) {\n for (let i = 0; i < slides.length; i += 1) {\n if (slides[i]) swiper.virtual.slides.unshift(slides[i]);\n }\n\n newActiveIndex = activeIndex + slides.length;\n numberOfNewSlides = slides.length;\n } else {\n swiper.virtual.slides.unshift(slides);\n }\n\n if (swiper.params.virtual.cache) {\n const cache = swiper.virtual.cache;\n const newCache = {};\n Object.keys(cache).forEach(cachedIndex => {\n const $cachedEl = cache[cachedIndex];\n const cachedElIndex = $cachedEl.attr('data-swiper-slide-index');\n\n if (cachedElIndex) {\n $cachedEl.attr('data-swiper-slide-index', parseInt(cachedElIndex, 10) + numberOfNewSlides);\n }\n\n newCache[parseInt(cachedIndex, 10) + numberOfNewSlides] = $cachedEl;\n });\n swiper.virtual.cache = newCache;\n }\n\n update(true);\n swiper.slideTo(newActiveIndex, 0);\n }\n\n function removeSlide(slidesIndexes) {\n if (typeof slidesIndexes === 'undefined' || slidesIndexes === null) return;\n let activeIndex = swiper.activeIndex;\n\n if (Array.isArray(slidesIndexes)) {\n for (let i = slidesIndexes.length - 1; i >= 0; i -= 1) {\n swiper.virtual.slides.splice(slidesIndexes[i], 1);\n\n if (swiper.params.virtual.cache) {\n delete swiper.virtual.cache[slidesIndexes[i]];\n }\n\n if (slidesIndexes[i] < activeIndex) activeIndex -= 1;\n activeIndex = Math.max(activeIndex, 0);\n }\n } else {\n swiper.virtual.slides.splice(slidesIndexes, 1);\n\n if (swiper.params.virtual.cache) {\n delete swiper.virtual.cache[slidesIndexes];\n }\n\n if (slidesIndexes < activeIndex) activeIndex -= 1;\n activeIndex = Math.max(activeIndex, 0);\n }\n\n update(true);\n swiper.slideTo(activeIndex, 0);\n }\n\n function removeAllSlides() {\n swiper.virtual.slides = [];\n\n if (swiper.params.virtual.cache) {\n swiper.virtual.cache = {};\n }\n\n update(true);\n swiper.slideTo(0, 0);\n }\n\n on('beforeInit', () => {\n if (!swiper.params.virtual.enabled) return;\n swiper.virtual.slides = swiper.params.virtual.slides;\n swiper.classNames.push(`${swiper.params.containerModifierClass}virtual`);\n swiper.params.watchSlidesProgress = true;\n swiper.originalParams.watchSlidesProgress = true;\n\n if (!swiper.params.initialSlide) {\n update();\n }\n });\n on('setTranslate', () => {\n if (!swiper.params.virtual.enabled) return;\n\n if (swiper.params.cssMode && !swiper._immediateVirtual) {\n clearTimeout(cssModeTimeout);\n cssModeTimeout = setTimeout(() => {\n update();\n }, 100);\n } else {\n update();\n }\n });\n on('init update resize', () => {\n if (!swiper.params.virtual.enabled) return;\n\n if (swiper.params.cssMode) {\n setCSSProperty(swiper.wrapperEl, '--swiper-virtual-size', `${swiper.virtualSize}px`);\n }\n });\n Object.assign(swiper.virtual, {\n appendSlide,\n prependSlide,\n removeSlide,\n removeAllSlides,\n update\n });\n}","import { getWindow } from 'ssr-window';\nimport $ from '../../shared/dom.js';\nimport { getTranslate } from '../../shared/utils.js';\nexport default function Zoom({\n swiper,\n extendParams,\n on,\n emit\n}) {\n const window = getWindow();\n extendParams({\n zoom: {\n enabled: false,\n maxRatio: 3,\n minRatio: 1,\n toggle: true,\n containerClass: 'swiper-zoom-container',\n zoomedSlideClass: 'swiper-slide-zoomed'\n }\n });\n swiper.zoom = {\n enabled: false\n };\n let currentScale = 1;\n let isScaling = false;\n let gesturesEnabled;\n let fakeGestureTouched;\n let fakeGestureMoved;\n const gesture = {\n $slideEl: undefined,\n slideWidth: undefined,\n slideHeight: undefined,\n $imageEl: undefined,\n $imageWrapEl: undefined,\n maxRatio: 3\n };\n const image = {\n isTouched: undefined,\n isMoved: undefined,\n currentX: undefined,\n currentY: undefined,\n minX: undefined,\n minY: undefined,\n maxX: undefined,\n maxY: undefined,\n width: undefined,\n height: undefined,\n startX: undefined,\n startY: undefined,\n touchesStart: {},\n touchesCurrent: {}\n };\n const velocity = {\n x: undefined,\n y: undefined,\n prevPositionX: undefined,\n prevPositionY: undefined,\n prevTime: undefined\n };\n let scale = 1;\n Object.defineProperty(swiper.zoom, 'scale', {\n get() {\n return scale;\n },\n\n set(value) {\n if (scale !== value) {\n const imageEl = gesture.$imageEl ? gesture.$imageEl[0] : undefined;\n const slideEl = gesture.$slideEl ? gesture.$slideEl[0] : undefined;\n emit('zoomChange', value, imageEl, slideEl);\n }\n\n scale = value;\n }\n\n });\n\n function getDistanceBetweenTouches(e) {\n if (e.targetTouches.length < 2) return 1;\n const x1 = e.targetTouches[0].pageX;\n const y1 = e.targetTouches[0].pageY;\n const x2 = e.targetTouches[1].pageX;\n const y2 = e.targetTouches[1].pageY;\n const distance = Math.sqrt((x2 - x1) ** 2 + (y2 - y1) ** 2);\n return distance;\n } // Events\n\n\n function onGestureStart(e) {\n const support = swiper.support;\n const params = swiper.params.zoom;\n fakeGestureTouched = false;\n fakeGestureMoved = false;\n\n if (!support.gestures) {\n if (e.type !== 'touchstart' || e.type === 'touchstart' && e.targetTouches.length < 2) {\n return;\n }\n\n fakeGestureTouched = true;\n gesture.scaleStart = getDistanceBetweenTouches(e);\n }\n\n if (!gesture.$slideEl || !gesture.$slideEl.length) {\n gesture.$slideEl = $(e.target).closest(`.${swiper.params.slideClass}`);\n if (gesture.$slideEl.length === 0) gesture.$slideEl = swiper.slides.eq(swiper.activeIndex);\n gesture.$imageEl = gesture.$slideEl.find(`.${params.containerClass}`).eq(0).find('picture, img, svg, canvas, .swiper-zoom-target').eq(0);\n gesture.$imageWrapEl = gesture.$imageEl.parent(`.${params.containerClass}`);\n gesture.maxRatio = gesture.$imageWrapEl.attr('data-swiper-zoom') || params.maxRatio;\n\n if (gesture.$imageWrapEl.length === 0) {\n gesture.$imageEl = undefined;\n return;\n }\n }\n\n if (gesture.$imageEl) {\n gesture.$imageEl.transition(0);\n }\n\n isScaling = true;\n }\n\n function onGestureChange(e) {\n const support = swiper.support;\n const params = swiper.params.zoom;\n const zoom = swiper.zoom;\n\n if (!support.gestures) {\n if (e.type !== 'touchmove' || e.type === 'touchmove' && e.targetTouches.length < 2) {\n return;\n }\n\n fakeGestureMoved = true;\n gesture.scaleMove = getDistanceBetweenTouches(e);\n }\n\n if (!gesture.$imageEl || gesture.$imageEl.length === 0) {\n if (e.type === 'gesturechange') onGestureStart(e);\n return;\n }\n\n if (support.gestures) {\n zoom.scale = e.scale * currentScale;\n } else {\n zoom.scale = gesture.scaleMove / gesture.scaleStart * currentScale;\n }\n\n if (zoom.scale > gesture.maxRatio) {\n zoom.scale = gesture.maxRatio - 1 + (zoom.scale - gesture.maxRatio + 1) ** 0.5;\n }\n\n if (zoom.scale < params.minRatio) {\n zoom.scale = params.minRatio + 1 - (params.minRatio - zoom.scale + 1) ** 0.5;\n }\n\n gesture.$imageEl.transform(`translate3d(0,0,0) scale(${zoom.scale})`);\n }\n\n function onGestureEnd(e) {\n const device = swiper.device;\n const support = swiper.support;\n const params = swiper.params.zoom;\n const zoom = swiper.zoom;\n\n if (!support.gestures) {\n if (!fakeGestureTouched || !fakeGestureMoved) {\n return;\n }\n\n if (e.type !== 'touchend' || e.type === 'touchend' && e.changedTouches.length < 2 && !device.android) {\n return;\n }\n\n fakeGestureTouched = false;\n fakeGestureMoved = false;\n }\n\n if (!gesture.$imageEl || gesture.$imageEl.length === 0) return;\n zoom.scale = Math.max(Math.min(zoom.scale, gesture.maxRatio), params.minRatio);\n gesture.$imageEl.transition(swiper.params.speed).transform(`translate3d(0,0,0) scale(${zoom.scale})`);\n currentScale = zoom.scale;\n isScaling = false;\n if (zoom.scale === 1) gesture.$slideEl = undefined;\n }\n\n function onTouchStart(e) {\n const device = swiper.device;\n if (!gesture.$imageEl || gesture.$imageEl.length === 0) return;\n if (image.isTouched) return;\n if (device.android && e.cancelable) e.preventDefault();\n image.isTouched = true;\n image.touchesStart.x = e.type === 'touchstart' ? e.targetTouches[0].pageX : e.pageX;\n image.touchesStart.y = e.type === 'touchstart' ? e.targetTouches[0].pageY : e.pageY;\n }\n\n function onTouchMove(e) {\n const zoom = swiper.zoom;\n if (!gesture.$imageEl || gesture.$imageEl.length === 0) return;\n swiper.allowClick = false;\n if (!image.isTouched || !gesture.$slideEl) return;\n\n if (!image.isMoved) {\n image.width = gesture.$imageEl[0].offsetWidth;\n image.height = gesture.$imageEl[0].offsetHeight;\n image.startX = getTranslate(gesture.$imageWrapEl[0], 'x') || 0;\n image.startY = getTranslate(gesture.$imageWrapEl[0], 'y') || 0;\n gesture.slideWidth = gesture.$slideEl[0].offsetWidth;\n gesture.slideHeight = gesture.$slideEl[0].offsetHeight;\n gesture.$imageWrapEl.transition(0);\n } // Define if we need image drag\n\n\n const scaledWidth = image.width * zoom.scale;\n const scaledHeight = image.height * zoom.scale;\n if (scaledWidth < gesture.slideWidth && scaledHeight < gesture.slideHeight) return;\n image.minX = Math.min(gesture.slideWidth / 2 - scaledWidth / 2, 0);\n image.maxX = -image.minX;\n image.minY = Math.min(gesture.slideHeight / 2 - scaledHeight / 2, 0);\n image.maxY = -image.minY;\n image.touchesCurrent.x = e.type === 'touchmove' ? e.targetTouches[0].pageX : e.pageX;\n image.touchesCurrent.y = e.type === 'touchmove' ? e.targetTouches[0].pageY : e.pageY;\n\n if (!image.isMoved && !isScaling) {\n if (swiper.isHorizontal() && (Math.floor(image.minX) === Math.floor(image.startX) && image.touchesCurrent.x < image.touchesStart.x || Math.floor(image.maxX) === Math.floor(image.startX) && image.touchesCurrent.x > image.touchesStart.x)) {\n image.isTouched = false;\n return;\n }\n\n if (!swiper.isHorizontal() && (Math.floor(image.minY) === Math.floor(image.startY) && image.touchesCurrent.y < image.touchesStart.y || Math.floor(image.maxY) === Math.floor(image.startY) && image.touchesCurrent.y > image.touchesStart.y)) {\n image.isTouched = false;\n return;\n }\n }\n\n if (e.cancelable) {\n e.preventDefault();\n }\n\n e.stopPropagation();\n image.isMoved = true;\n image.currentX = image.touchesCurrent.x - image.touchesStart.x + image.startX;\n image.currentY = image.touchesCurrent.y - image.touchesStart.y + image.startY;\n\n if (image.currentX < image.minX) {\n image.currentX = image.minX + 1 - (image.minX - image.currentX + 1) ** 0.8;\n }\n\n if (image.currentX > image.maxX) {\n image.currentX = image.maxX - 1 + (image.currentX - image.maxX + 1) ** 0.8;\n }\n\n if (image.currentY < image.minY) {\n image.currentY = image.minY + 1 - (image.minY - image.currentY + 1) ** 0.8;\n }\n\n if (image.currentY > image.maxY) {\n image.currentY = image.maxY - 1 + (image.currentY - image.maxY + 1) ** 0.8;\n } // Velocity\n\n\n if (!velocity.prevPositionX) velocity.prevPositionX = image.touchesCurrent.x;\n if (!velocity.prevPositionY) velocity.prevPositionY = image.touchesCurrent.y;\n if (!velocity.prevTime) velocity.prevTime = Date.now();\n velocity.x = (image.touchesCurrent.x - velocity.prevPositionX) / (Date.now() - velocity.prevTime) / 2;\n velocity.y = (image.touchesCurrent.y - velocity.prevPositionY) / (Date.now() - velocity.prevTime) / 2;\n if (Math.abs(image.touchesCurrent.x - velocity.prevPositionX) < 2) velocity.x = 0;\n if (Math.abs(image.touchesCurrent.y - velocity.prevPositionY) < 2) velocity.y = 0;\n velocity.prevPositionX = image.touchesCurrent.x;\n velocity.prevPositionY = image.touchesCurrent.y;\n velocity.prevTime = Date.now();\n gesture.$imageWrapEl.transform(`translate3d(${image.currentX}px, ${image.currentY}px,0)`);\n }\n\n function onTouchEnd() {\n const zoom = swiper.zoom;\n if (!gesture.$imageEl || gesture.$imageEl.length === 0) return;\n\n if (!image.isTouched || !image.isMoved) {\n image.isTouched = false;\n image.isMoved = false;\n return;\n }\n\n image.isTouched = false;\n image.isMoved = false;\n let momentumDurationX = 300;\n let momentumDurationY = 300;\n const momentumDistanceX = velocity.x * momentumDurationX;\n const newPositionX = image.currentX + momentumDistanceX;\n const momentumDistanceY = velocity.y * momentumDurationY;\n const newPositionY = image.currentY + momentumDistanceY; // Fix duration\n\n if (velocity.x !== 0) momentumDurationX = Math.abs((newPositionX - image.currentX) / velocity.x);\n if (velocity.y !== 0) momentumDurationY = Math.abs((newPositionY - image.currentY) / velocity.y);\n const momentumDuration = Math.max(momentumDurationX, momentumDurationY);\n image.currentX = newPositionX;\n image.currentY = newPositionY; // Define if we need image drag\n\n const scaledWidth = image.width * zoom.scale;\n const scaledHeight = image.height * zoom.scale;\n image.minX = Math.min(gesture.slideWidth / 2 - scaledWidth / 2, 0);\n image.maxX = -image.minX;\n image.minY = Math.min(gesture.slideHeight / 2 - scaledHeight / 2, 0);\n image.maxY = -image.minY;\n image.currentX = Math.max(Math.min(image.currentX, image.maxX), image.minX);\n image.currentY = Math.max(Math.min(image.currentY, image.maxY), image.minY);\n gesture.$imageWrapEl.transition(momentumDuration).transform(`translate3d(${image.currentX}px, ${image.currentY}px,0)`);\n }\n\n function onTransitionEnd() {\n const zoom = swiper.zoom;\n\n if (gesture.$slideEl && swiper.previousIndex !== swiper.activeIndex) {\n if (gesture.$imageEl) {\n gesture.$imageEl.transform('translate3d(0,0,0) scale(1)');\n }\n\n if (gesture.$imageWrapEl) {\n gesture.$imageWrapEl.transform('translate3d(0,0,0)');\n }\n\n zoom.scale = 1;\n currentScale = 1;\n gesture.$slideEl = undefined;\n gesture.$imageEl = undefined;\n gesture.$imageWrapEl = undefined;\n }\n }\n\n function zoomIn(e) {\n const zoom = swiper.zoom;\n const params = swiper.params.zoom;\n\n if (!gesture.$slideEl) {\n if (e && e.target) {\n gesture.$slideEl = $(e.target).closest(`.${swiper.params.slideClass}`);\n }\n\n if (!gesture.$slideEl) {\n if (swiper.params.virtual && swiper.params.virtual.enabled && swiper.virtual) {\n gesture.$slideEl = swiper.$wrapperEl.children(`.${swiper.params.slideActiveClass}`);\n } else {\n gesture.$slideEl = swiper.slides.eq(swiper.activeIndex);\n }\n }\n\n gesture.$imageEl = gesture.$slideEl.find(`.${params.containerClass}`).eq(0).find('picture, img, svg, canvas, .swiper-zoom-target').eq(0);\n gesture.$imageWrapEl = gesture.$imageEl.parent(`.${params.containerClass}`);\n }\n\n if (!gesture.$imageEl || gesture.$imageEl.length === 0 || !gesture.$imageWrapEl || gesture.$imageWrapEl.length === 0) return;\n\n if (swiper.params.cssMode) {\n swiper.wrapperEl.style.overflow = 'hidden';\n swiper.wrapperEl.style.touchAction = 'none';\n }\n\n gesture.$slideEl.addClass(`${params.zoomedSlideClass}`);\n let touchX;\n let touchY;\n let offsetX;\n let offsetY;\n let diffX;\n let diffY;\n let translateX;\n let translateY;\n let imageWidth;\n let imageHeight;\n let scaledWidth;\n let scaledHeight;\n let translateMinX;\n let translateMinY;\n let translateMaxX;\n let translateMaxY;\n let slideWidth;\n let slideHeight;\n\n if (typeof image.touchesStart.x === 'undefined' && e) {\n touchX = e.type === 'touchend' ? e.changedTouches[0].pageX : e.pageX;\n touchY = e.type === 'touchend' ? e.changedTouches[0].pageY : e.pageY;\n } else {\n touchX = image.touchesStart.x;\n touchY = image.touchesStart.y;\n }\n\n zoom.scale = gesture.$imageWrapEl.attr('data-swiper-zoom') || params.maxRatio;\n currentScale = gesture.$imageWrapEl.attr('data-swiper-zoom') || params.maxRatio;\n\n if (e) {\n slideWidth = gesture.$slideEl[0].offsetWidth;\n slideHeight = gesture.$slideEl[0].offsetHeight;\n offsetX = gesture.$slideEl.offset().left + window.scrollX;\n offsetY = gesture.$slideEl.offset().top + window.scrollY;\n diffX = offsetX + slideWidth / 2 - touchX;\n diffY = offsetY + slideHeight / 2 - touchY;\n imageWidth = gesture.$imageEl[0].offsetWidth;\n imageHeight = gesture.$imageEl[0].offsetHeight;\n scaledWidth = imageWidth * zoom.scale;\n scaledHeight = imageHeight * zoom.scale;\n translateMinX = Math.min(slideWidth / 2 - scaledWidth / 2, 0);\n translateMinY = Math.min(slideHeight / 2 - scaledHeight / 2, 0);\n translateMaxX = -translateMinX;\n translateMaxY = -translateMinY;\n translateX = diffX * zoom.scale;\n translateY = diffY * zoom.scale;\n\n if (translateX < translateMinX) {\n translateX = translateMinX;\n }\n\n if (translateX > translateMaxX) {\n translateX = translateMaxX;\n }\n\n if (translateY < translateMinY) {\n translateY = translateMinY;\n }\n\n if (translateY > translateMaxY) {\n translateY = translateMaxY;\n }\n } else {\n translateX = 0;\n translateY = 0;\n }\n\n gesture.$imageWrapEl.transition(300).transform(`translate3d(${translateX}px, ${translateY}px,0)`);\n gesture.$imageEl.transition(300).transform(`translate3d(0,0,0) scale(${zoom.scale})`);\n }\n\n function zoomOut() {\n const zoom = swiper.zoom;\n const params = swiper.params.zoom;\n\n if (!gesture.$slideEl) {\n if (swiper.params.virtual && swiper.params.virtual.enabled && swiper.virtual) {\n gesture.$slideEl = swiper.$wrapperEl.children(`.${swiper.params.slideActiveClass}`);\n } else {\n gesture.$slideEl = swiper.slides.eq(swiper.activeIndex);\n }\n\n gesture.$imageEl = gesture.$slideEl.find(`.${params.containerClass}`).eq(0).find('picture, img, svg, canvas, .swiper-zoom-target').eq(0);\n gesture.$imageWrapEl = gesture.$imageEl.parent(`.${params.containerClass}`);\n }\n\n if (!gesture.$imageEl || gesture.$imageEl.length === 0 || !gesture.$imageWrapEl || gesture.$imageWrapEl.length === 0) return;\n\n if (swiper.params.cssMode) {\n swiper.wrapperEl.style.overflow = '';\n swiper.wrapperEl.style.touchAction = '';\n }\n\n zoom.scale = 1;\n currentScale = 1;\n gesture.$imageWrapEl.transition(300).transform('translate3d(0,0,0)');\n gesture.$imageEl.transition(300).transform('translate3d(0,0,0) scale(1)');\n gesture.$slideEl.removeClass(`${params.zoomedSlideClass}`);\n gesture.$slideEl = undefined;\n } // Toggle Zoom\n\n\n function zoomToggle(e) {\n const zoom = swiper.zoom;\n\n if (zoom.scale && zoom.scale !== 1) {\n // Zoom Out\n zoomOut();\n } else {\n // Zoom In\n zoomIn(e);\n }\n }\n\n function getListeners() {\n const support = swiper.support;\n const passiveListener = swiper.touchEvents.start === 'touchstart' && support.passiveListener && swiper.params.passiveListeners ? {\n passive: true,\n capture: false\n } : false;\n const activeListenerWithCapture = support.passiveListener ? {\n passive: false,\n capture: true\n } : true;\n return {\n passiveListener,\n activeListenerWithCapture\n };\n }\n\n function getSlideSelector() {\n return `.${swiper.params.slideClass}`;\n }\n\n function toggleGestures(method) {\n const {\n passiveListener\n } = getListeners();\n const slideSelector = getSlideSelector();\n swiper.$wrapperEl[method]('gesturestart', slideSelector, onGestureStart, passiveListener);\n swiper.$wrapperEl[method]('gesturechange', slideSelector, onGestureChange, passiveListener);\n swiper.$wrapperEl[method]('gestureend', slideSelector, onGestureEnd, passiveListener);\n }\n\n function enableGestures() {\n if (gesturesEnabled) return;\n gesturesEnabled = true;\n toggleGestures('on');\n }\n\n function disableGestures() {\n if (!gesturesEnabled) return;\n gesturesEnabled = false;\n toggleGestures('off');\n } // Attach/Detach Events\n\n\n function enable() {\n const zoom = swiper.zoom;\n if (zoom.enabled) return;\n zoom.enabled = true;\n const support = swiper.support;\n const {\n passiveListener,\n activeListenerWithCapture\n } = getListeners();\n const slideSelector = getSlideSelector(); // Scale image\n\n if (support.gestures) {\n swiper.$wrapperEl.on(swiper.touchEvents.start, enableGestures, passiveListener);\n swiper.$wrapperEl.on(swiper.touchEvents.end, disableGestures, passiveListener);\n } else if (swiper.touchEvents.start === 'touchstart') {\n swiper.$wrapperEl.on(swiper.touchEvents.start, slideSelector, onGestureStart, passiveListener);\n swiper.$wrapperEl.on(swiper.touchEvents.move, slideSelector, onGestureChange, activeListenerWithCapture);\n swiper.$wrapperEl.on(swiper.touchEvents.end, slideSelector, onGestureEnd, passiveListener);\n\n if (swiper.touchEvents.cancel) {\n swiper.$wrapperEl.on(swiper.touchEvents.cancel, slideSelector, onGestureEnd, passiveListener);\n }\n } // Move image\n\n\n swiper.$wrapperEl.on(swiper.touchEvents.move, `.${swiper.params.zoom.containerClass}`, onTouchMove, activeListenerWithCapture);\n }\n\n function disable() {\n const zoom = swiper.zoom;\n if (!zoom.enabled) return;\n const support = swiper.support;\n zoom.enabled = false;\n const {\n passiveListener,\n activeListenerWithCapture\n } = getListeners();\n const slideSelector = getSlideSelector(); // Scale image\n\n if (support.gestures) {\n swiper.$wrapperEl.off(swiper.touchEvents.start, enableGestures, passiveListener);\n swiper.$wrapperEl.off(swiper.touchEvents.end, disableGestures, passiveListener);\n } else if (swiper.touchEvents.start === 'touchstart') {\n swiper.$wrapperEl.off(swiper.touchEvents.start, slideSelector, onGestureStart, passiveListener);\n swiper.$wrapperEl.off(swiper.touchEvents.move, slideSelector, onGestureChange, activeListenerWithCapture);\n swiper.$wrapperEl.off(swiper.touchEvents.end, slideSelector, onGestureEnd, passiveListener);\n\n if (swiper.touchEvents.cancel) {\n swiper.$wrapperEl.off(swiper.touchEvents.cancel, slideSelector, onGestureEnd, passiveListener);\n }\n } // Move image\n\n\n swiper.$wrapperEl.off(swiper.touchEvents.move, `.${swiper.params.zoom.containerClass}`, onTouchMove, activeListenerWithCapture);\n }\n\n on('init', () => {\n if (swiper.params.zoom.enabled) {\n enable();\n }\n });\n on('destroy', () => {\n disable();\n });\n on('touchStart', (_s, e) => {\n if (!swiper.zoom.enabled) return;\n onTouchStart(e);\n });\n on('touchEnd', (_s, e) => {\n if (!swiper.zoom.enabled) return;\n onTouchEnd(e);\n });\n on('doubleTap', (_s, e) => {\n if (!swiper.animating && swiper.params.zoom.enabled && swiper.zoom.enabled && swiper.params.zoom.toggle) {\n zoomToggle(e);\n }\n });\n on('transitionEnd', () => {\n if (swiper.zoom.enabled && swiper.params.zoom.enabled) {\n onTransitionEnd();\n }\n });\n on('slideChange', () => {\n if (swiper.zoom.enabled && swiper.params.zoom.enabled && swiper.params.cssMode) {\n onTransitionEnd();\n }\n });\n Object.assign(swiper.zoom, {\n enable,\n disable,\n in: zoomIn,\n out: zoomOut,\n toggle: zoomToggle\n });\n}","export default function classesToSelector(classes = '') {\n return `.${classes.trim().replace(/([\\.:!\\/])/g, '\\\\$1') // eslint-disable-line\n .replace(/ /g, '.')}`;\n}","import { getDocument } from 'ssr-window';\nexport default function createElementIfNotDefined(swiper, originalParams, params, checkProps) {\n const document = getDocument();\n\n if (swiper.params.createElements) {\n Object.keys(checkProps).forEach(key => {\n if (!params[key] && params.auto === true) {\n let element = swiper.$el.children(`.${checkProps[key]}`)[0];\n\n if (!element) {\n element = document.createElement('div');\n element.className = checkProps[key];\n swiper.$el.append(element);\n }\n\n params[key] = element;\n originalParams[key] = element;\n }\n });\n }\n\n return params;\n}","import $ from './dom.js';\nexport default function createShadow(params, $slideEl, side) {\n const shadowClass = `swiper-slide-shadow${side ? `-${side}` : ''}`;\n const $shadowContainer = params.transformEl ? $slideEl.find(params.transformEl) : $slideEl;\n let $shadowEl = $shadowContainer.children(`.${shadowClass}`);\n\n if (!$shadowEl.length) {\n $shadowEl = $(`
`);\n $shadowContainer.append($shadowEl);\n }\n\n return $shadowEl;\n}","import { $, addClass, removeClass, hasClass, toggleClass, attr, removeAttr, transform, transition, on, off, trigger, transitionEnd, outerWidth, outerHeight, styles, offset, css, each, html, text, is, index, eq, append, prepend, next, nextAll, prev, prevAll, parent, parents, closest, find, children, filter, remove } from 'dom7';\nconst Methods = {\n addClass,\n removeClass,\n hasClass,\n toggleClass,\n attr,\n removeAttr,\n transform,\n transition,\n on,\n off,\n trigger,\n transitionEnd,\n outerWidth,\n outerHeight,\n styles,\n offset,\n css,\n each,\n html,\n text,\n is,\n index,\n eq,\n append,\n prepend,\n next,\n nextAll,\n prev,\n prevAll,\n parent,\n parents,\n closest,\n find,\n children,\n filter,\n remove\n};\nObject.keys(Methods).forEach(methodName => {\n Object.defineProperty($.fn, methodName, {\n value: Methods[methodName],\n writable: true\n });\n});\nexport default $;","export default function effectInit(params) {\n const {\n effect,\n swiper,\n on,\n setTranslate,\n setTransition,\n overwriteParams,\n perspective\n } = params;\n on('beforeInit', () => {\n if (swiper.params.effect !== effect) return;\n swiper.classNames.push(`${swiper.params.containerModifierClass}${effect}`);\n\n if (perspective && perspective()) {\n swiper.classNames.push(`${swiper.params.containerModifierClass}3d`);\n }\n\n const overwriteParamsResult = overwriteParams ? overwriteParams() : {};\n Object.assign(swiper.params, overwriteParamsResult);\n Object.assign(swiper.originalParams, overwriteParamsResult);\n });\n on('setTranslate', () => {\n if (swiper.params.effect !== effect) return;\n setTranslate();\n });\n on('setTransition', (_s, duration) => {\n if (swiper.params.effect !== effect) return;\n setTransition(duration);\n });\n}","export default function effectTarget(effectParams, $slideEl) {\n if (effectParams.transformEl) {\n return $slideEl.find(effectParams.transformEl).css({\n 'backface-visibility': 'hidden',\n '-webkit-backface-visibility': 'hidden'\n });\n }\n\n return $slideEl;\n}","export default function effectVirtualTransitionEnd({\n swiper,\n duration,\n transformEl,\n allSlides\n}) {\n const {\n slides,\n activeIndex,\n $wrapperEl\n } = swiper;\n\n if (swiper.params.virtualTranslate && duration !== 0) {\n let eventTriggered = false;\n let $transitionEndTarget;\n\n if (allSlides) {\n $transitionEndTarget = transformEl ? slides.find(transformEl) : slides;\n } else {\n $transitionEndTarget = transformEl ? slides.eq(activeIndex).find(transformEl) : slides.eq(activeIndex);\n }\n\n $transitionEndTarget.transitionEnd(() => {\n if (eventTriggered) return;\n if (!swiper || swiper.destroyed) return;\n eventTriggered = true;\n swiper.animating = false;\n const triggerEvents = ['webkitTransitionEnd', 'transitionend'];\n\n for (let i = 0; i < triggerEvents.length; i += 1) {\n $wrapperEl.trigger(triggerEvents[i]);\n }\n });\n }\n}","import { getWindow } from 'ssr-window';\nlet browser;\n\nfunction calcBrowser() {\n const window = getWindow();\n\n function isSafari() {\n const ua = window.navigator.userAgent.toLowerCase();\n return ua.indexOf('safari') >= 0 && ua.indexOf('chrome') < 0 && ua.indexOf('android') < 0;\n }\n\n return {\n isSafari: isSafari(),\n isWebView: /(iPhone|iPod|iPad).*AppleWebKit(?!.*Safari)/i.test(window.navigator.userAgent)\n };\n}\n\nfunction getBrowser() {\n if (!browser) {\n browser = calcBrowser();\n }\n\n return browser;\n}\n\nexport { getBrowser };","import { getWindow } from 'ssr-window';\nimport { getSupport } from './get-support.js';\nlet deviceCached;\n\nfunction calcDevice({\n userAgent\n} = {}) {\n const support = getSupport();\n const window = getWindow();\n const platform = window.navigator.platform;\n const ua = userAgent || window.navigator.userAgent;\n const device = {\n ios: false,\n android: false\n };\n const screenWidth = window.screen.width;\n const screenHeight = window.screen.height;\n const android = ua.match(/(Android);?[\\s\\/]+([\\d.]+)?/); // eslint-disable-line\n\n let ipad = ua.match(/(iPad).*OS\\s([\\d_]+)/);\n const ipod = ua.match(/(iPod)(.*OS\\s([\\d_]+))?/);\n const iphone = !ipad && ua.match(/(iPhone\\sOS|iOS)\\s([\\d_]+)/);\n const windows = platform === 'Win32';\n let macos = platform === 'MacIntel'; // iPadOs 13 fix\n\n const iPadScreens = ['1024x1366', '1366x1024', '834x1194', '1194x834', '834x1112', '1112x834', '768x1024', '1024x768', '820x1180', '1180x820', '810x1080', '1080x810'];\n\n if (!ipad && macos && support.touch && iPadScreens.indexOf(`${screenWidth}x${screenHeight}`) >= 0) {\n ipad = ua.match(/(Version)\\/([\\d.]+)/);\n if (!ipad) ipad = [0, 1, '13_0_0'];\n macos = false;\n } // Android\n\n\n if (android && !windows) {\n device.os = 'android';\n device.android = true;\n }\n\n if (ipad || iphone || ipod) {\n device.os = 'ios';\n device.ios = true;\n } // Export object\n\n\n return device;\n}\n\nfunction getDevice(overrides = {}) {\n if (!deviceCached) {\n deviceCached = calcDevice(overrides);\n }\n\n return deviceCached;\n}\n\nexport { getDevice };","import { getWindow, getDocument } from 'ssr-window';\nlet support;\n\nfunction calcSupport() {\n const window = getWindow();\n const document = getDocument();\n return {\n smoothScroll: document.documentElement && 'scrollBehavior' in document.documentElement.style,\n touch: !!('ontouchstart' in window || window.DocumentTouch && document instanceof window.DocumentTouch),\n passiveListener: function checkPassiveListener() {\n let supportsPassive = false;\n\n try {\n const opts = Object.defineProperty({}, 'passive', {\n // eslint-disable-next-line\n get() {\n supportsPassive = true;\n }\n\n });\n window.addEventListener('testPassiveListener', null, opts);\n } catch (e) {// No support\n }\n\n return supportsPassive;\n }(),\n gestures: function checkGestures() {\n return 'ongesturestart' in window;\n }()\n };\n}\n\nfunction getSupport() {\n if (!support) {\n support = calcSupport();\n }\n\n return support;\n}\n\nexport { getSupport };","import { getWindow } from 'ssr-window';\n\nfunction deleteProps(obj) {\n const object = obj;\n Object.keys(object).forEach(key => {\n try {\n object[key] = null;\n } catch (e) {// no getter for object\n }\n\n try {\n delete object[key];\n } catch (e) {// something got wrong\n }\n });\n}\n\nfunction nextTick(callback, delay = 0) {\n return setTimeout(callback, delay);\n}\n\nfunction now() {\n return Date.now();\n}\n\nfunction getComputedStyle(el) {\n const window = getWindow();\n let style;\n\n if (window.getComputedStyle) {\n style = window.getComputedStyle(el, null);\n }\n\n if (!style && el.currentStyle) {\n style = el.currentStyle;\n }\n\n if (!style) {\n style = el.style;\n }\n\n return style;\n}\n\nfunction getTranslate(el, axis = 'x') {\n const window = getWindow();\n let matrix;\n let curTransform;\n let transformMatrix;\n const curStyle = getComputedStyle(el, null);\n\n if (window.WebKitCSSMatrix) {\n curTransform = curStyle.transform || curStyle.webkitTransform;\n\n if (curTransform.split(',').length > 6) {\n curTransform = curTransform.split(', ').map(a => a.replace(',', '.')).join(', ');\n } // Some old versions of Webkit choke when 'none' is passed; pass\n // empty string instead in this case\n\n\n transformMatrix = new window.WebKitCSSMatrix(curTransform === 'none' ? '' : curTransform);\n } else {\n transformMatrix = curStyle.MozTransform || curStyle.OTransform || curStyle.MsTransform || curStyle.msTransform || curStyle.transform || curStyle.getPropertyValue('transform').replace('translate(', 'matrix(1, 0, 0, 1,');\n matrix = transformMatrix.toString().split(',');\n }\n\n if (axis === 'x') {\n // Latest Chrome and webkits Fix\n if (window.WebKitCSSMatrix) curTransform = transformMatrix.m41; // Crazy IE10 Matrix\n else if (matrix.length === 16) curTransform = parseFloat(matrix[12]); // Normal Browsers\n else curTransform = parseFloat(matrix[4]);\n }\n\n if (axis === 'y') {\n // Latest Chrome and webkits Fix\n if (window.WebKitCSSMatrix) curTransform = transformMatrix.m42; // Crazy IE10 Matrix\n else if (matrix.length === 16) curTransform = parseFloat(matrix[13]); // Normal Browsers\n else curTransform = parseFloat(matrix[5]);\n }\n\n return curTransform || 0;\n}\n\nfunction isObject(o) {\n return typeof o === 'object' && o !== null && o.constructor && Object.prototype.toString.call(o).slice(8, -1) === 'Object';\n}\n\nfunction isNode(node) {\n // eslint-disable-next-line\n if (typeof window !== 'undefined' && typeof window.HTMLElement !== 'undefined') {\n return node instanceof HTMLElement;\n }\n\n return node && (node.nodeType === 1 || node.nodeType === 11);\n}\n\nfunction extend(...args) {\n const to = Object(args[0]);\n const noExtend = ['__proto__', 'constructor', 'prototype'];\n\n for (let i = 1; i < args.length; i += 1) {\n const nextSource = args[i];\n\n if (nextSource !== undefined && nextSource !== null && !isNode(nextSource)) {\n const keysArray = Object.keys(Object(nextSource)).filter(key => noExtend.indexOf(key) < 0);\n\n for (let nextIndex = 0, len = keysArray.length; nextIndex < len; nextIndex += 1) {\n const nextKey = keysArray[nextIndex];\n const desc = Object.getOwnPropertyDescriptor(nextSource, nextKey);\n\n if (desc !== undefined && desc.enumerable) {\n if (isObject(to[nextKey]) && isObject(nextSource[nextKey])) {\n if (nextSource[nextKey].__swiper__) {\n to[nextKey] = nextSource[nextKey];\n } else {\n extend(to[nextKey], nextSource[nextKey]);\n }\n } else if (!isObject(to[nextKey]) && isObject(nextSource[nextKey])) {\n to[nextKey] = {};\n\n if (nextSource[nextKey].__swiper__) {\n to[nextKey] = nextSource[nextKey];\n } else {\n extend(to[nextKey], nextSource[nextKey]);\n }\n } else {\n to[nextKey] = nextSource[nextKey];\n }\n }\n }\n }\n }\n\n return to;\n}\n\nfunction setCSSProperty(el, varName, varValue) {\n el.style.setProperty(varName, varValue);\n}\n\nfunction animateCSSModeScroll({\n swiper,\n targetPosition,\n side\n}) {\n const window = getWindow();\n const startPosition = -swiper.translate;\n let startTime = null;\n let time;\n const duration = swiper.params.speed;\n swiper.wrapperEl.style.scrollSnapType = 'none';\n window.cancelAnimationFrame(swiper.cssModeFrameID);\n const dir = targetPosition > startPosition ? 'next' : 'prev';\n\n const isOutOfBound = (current, target) => {\n return dir === 'next' && current >= target || dir === 'prev' && current <= target;\n };\n\n const animate = () => {\n time = new Date().getTime();\n\n if (startTime === null) {\n startTime = time;\n }\n\n const progress = Math.max(Math.min((time - startTime) / duration, 1), 0);\n const easeProgress = 0.5 - Math.cos(progress * Math.PI) / 2;\n let currentPosition = startPosition + easeProgress * (targetPosition - startPosition);\n\n if (isOutOfBound(currentPosition, targetPosition)) {\n currentPosition = targetPosition;\n }\n\n swiper.wrapperEl.scrollTo({\n [side]: currentPosition\n });\n\n if (isOutOfBound(currentPosition, targetPosition)) {\n swiper.wrapperEl.style.overflow = 'hidden';\n swiper.wrapperEl.style.scrollSnapType = '';\n setTimeout(() => {\n swiper.wrapperEl.style.overflow = '';\n swiper.wrapperEl.scrollTo({\n [side]: currentPosition\n });\n });\n window.cancelAnimationFrame(swiper.cssModeFrameID);\n return;\n }\n\n swiper.cssModeFrameID = window.requestAnimationFrame(animate);\n };\n\n animate();\n}\n\nexport { animateCSSModeScroll, deleteProps, nextTick, now, getTranslate, isObject, extend, getComputedStyle, setCSSProperty };","/**\n * Swiper 7.4.1\n * Most modern mobile touch slider and framework with hardware accelerated transitions\n * https://swiperjs.com\n *\n * Copyright 2014-2021 Vladimir Kharlampidi\n *\n * Released under the MIT License\n *\n * Released on: December 24, 2021\n */\n\nexport { default as Swiper, default } from './core/core.js';\nexport { default as Virtual } from './modules/virtual/virtual.js';\nexport { default as Keyboard } from './modules/keyboard/keyboard.js';\nexport { default as Mousewheel } from './modules/mousewheel/mousewheel.js';\nexport { default as Navigation } from './modules/navigation/navigation.js';\nexport { default as Pagination } from './modules/pagination/pagination.js';\nexport { default as Scrollbar } from './modules/scrollbar/scrollbar.js';\nexport { default as Parallax } from './modules/parallax/parallax.js';\nexport { default as Zoom } from './modules/zoom/zoom.js';\nexport { default as Lazy } from './modules/lazy/lazy.js';\nexport { default as Controller } from './modules/controller/controller.js';\nexport { default as A11y } from './modules/a11y/a11y.js';\nexport { default as History } from './modules/history/history.js';\nexport { default as HashNavigation } from './modules/hash-navigation/hash-navigation.js';\nexport { default as Autoplay } from './modules/autoplay/autoplay.js';\nexport { default as Thumbs } from './modules/thumbs/thumbs.js';\nexport { default as FreeMode } from './modules/free-mode/free-mode.js';\nexport { default as Grid } from './modules/grid/grid.js';\nexport { default as Manipulation } from './modules/manipulation/manipulation.js';\nexport { default as EffectFade } from './modules/effect-fade/effect-fade.js';\nexport { default as EffectCube } from './modules/effect-cube/effect-cube.js';\nexport { default as EffectFlip } from './modules/effect-flip/effect-flip.js';\nexport { default as EffectCoverflow } from './modules/effect-coverflow/effect-coverflow.js';\nexport { default as EffectCreative } from './modules/effect-creative/effect-creative.js';\nexport { default as EffectCards } from './modules/effect-cards/effect-cards.js';","// The module cache\nvar __webpack_module_cache__ = {};\n\n// The require function\nfunction __webpack_require__(moduleId) {\n\t// Check if module is in cache\n\tvar cachedModule = __webpack_module_cache__[moduleId];\n\tif (cachedModule !== undefined) {\n\t\treturn cachedModule.exports;\n\t}\n\t// Create a new module (and put it into the cache)\n\tvar module = __webpack_module_cache__[moduleId] = {\n\t\t// no module.id needed\n\t\t// no module.loaded needed\n\t\texports: {}\n\t};\n\n\t// Execute the module function\n\t__webpack_modules__[moduleId].call(module.exports, module, module.exports, __webpack_require__);\n\n\t// Return the exports of the module\n\treturn module.exports;\n}\n\n","// getDefaultExport function for compatibility with non-harmony modules\n__webpack_require__.n = (module) => {\n\tvar getter = module && module.__esModule ?\n\t\t() => (module['default']) :\n\t\t() => (module);\n\t__webpack_require__.d(getter, { a: getter });\n\treturn getter;\n};","// define getter functions for harmony exports\n__webpack_require__.d = (exports, definition) => {\n\tfor(var key in definition) {\n\t\tif(__webpack_require__.o(definition, key) && !__webpack_require__.o(exports, key)) {\n\t\t\tObject.defineProperty(exports, key, { enumerable: true, get: definition[key] });\n\t\t}\n\t}\n};","__webpack_require__.g = (function() {\n\tif (typeof globalThis === 'object') return globalThis;\n\ttry {\n\t\treturn this || new Function('return this')();\n\t} catch (e) {\n\t\tif (typeof window === 'object') return window;\n\t}\n})();","__webpack_require__.o = (obj, prop) => (Object.prototype.hasOwnProperty.call(obj, prop))","// define __esModule on exports\n__webpack_require__.r = (exports) => {\n\tif(typeof Symbol !== 'undefined' && Symbol.toStringTag) {\n\t\tObject.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });\n\t}\n\tObject.defineProperty(exports, '__esModule', { value: true });\n};","import { Fancybox } from '@fancyapps/ui'\r\n\r\nimport { changeMenu } from './components/burger-menu'\r\nimport { addSmoothScroll } from '../js/components/scroll-smooth'\r\nimport { initializationSliders } from '../js/components/sliders'\r\nimport { toggleAccordion } from '../js/components/accordion'\r\nimport { addVideoPlayer } from '../js/components/video-player'\r\nimport { paintBtn } from '../js/components/paint-btn'\r\n\r\nchangeMenu()\r\naddVideoPlayer()\r\ninitializationSliders()\r\naddSmoothScroll()\r\ntoggleAccordion()\r\npaintBtn()\r\n"],"names":["items","document","querySelectorAll","title","toggleAccordion","forEach","question","addEventListener","thisItem","parentNode","item","classList","toggle","remove","burger","querySelector","menu","menuLinks","changeMenu","contains","body","style","overflowY","el","btnNext","paintBtn","scrollToTop","top","window","scrollY","add","e","console","log","SmoothScroll","header","btnUpWrapper","addSmoothScroll","scroll","speed","Swiper","Navigation","Pagination","Autoplay","use","initializationSliders","recomendationsSlider","slidesPerView","navigation","nextEl","prevEl","loop","goodsSlider","pagination","clickable","breakpoints","professionalSlider","paginationClickable","initialSlide","centeredSlides","zoom","maxRatio","spaceBetween","allowTouchMove","interviewSlider","partnersSlider","freeMode","grabCursor","autoplay","enabled","delay","disableOnInteraction","freeModeMomentum","stop","start","running","error","videojs","playBtn","videoTitle","videoText","videoLink","videoGradient","videoIntro","videoMask","videoJsTech","addVideoPlayer","isPreviewVideo","videoPlayer","getElementById","muted","controls","playToggle","loadMainVideo","desktopUrl","mobileUrl","screen","width","src","type","volume","changePlayerStatus","play","addClass","on","played","removeClass","pause","fluid","objectFit","currentTime","Fancybox"],"sourceRoot":""} \ No newline at end of file diff --git a/src/partials/accordion.html b/src/partials/accordion.html index 408ec8fc8e2528986aed4b5d61e780a5cf04adbc..924f5b795debcf7496044655f5b2c7e799b8bac8 100644 --- a/src/partials/accordion.html +++ b/src/partials/accordion.html @@ -17,10 +17,10 @@ Аврора, ул.Авроры 6/1, Уфа

- RemZona, Курская 14А, Ростов-на-Дону + RemZona, ул. Курская, 14А, Ростов-на-Дону

- PodrezGarage, Орбитальная 3Е, Ростов-на-Дону + PodrezGarage, ул. Орбитальная, 3Е, Ростов-на-Дону

На Колесах.ру, мкр. Северное Чертаново, ЮАО, 5, Москва @@ -40,25 +40,25 @@

- BMW Транстехсервис, пр. Салавата Юлаева 95, Уфа + BMW Транстехсервис, пр. Салавата Юлаева 95, Уфа

- Fit Service, Казахская улица, 60, Ростов-на-Дону + Fit Service, Казахская улица, 60, Ростов-на-Дону

Авантаж Стайл, ул. Вильнюсская, 5, Москва

- Механик-СПб,ул. Тёплый Стан, 15, стр. 1, Москва + Механик-СПб, ул. Благодатная, 63, Санкт-Петербург

- Техноцентр Гараж, ул. Благодатная, 63, Санкт-Петербург + Техноцентр Гараж, ул. Тёплый Стан, 15, стр. 1, Москва

- Астор, Витебский проспект, 17 + Астор, Витебский проспект, 17, корп. 10, Санкт-Петербург

- Zet-avto,ул. ул. Салова, 70, корп. 2, Санкт-Петербург + Zet-avto, ул. Салова, 70, корп. 2, Санкт-Петербург

diff --git a/yarn.lock b/yarn.lock index aee0c2bcce8b2920b6246fe341cb6cdb2f1608bb..60f4a1fb96cde47dbf7dbd753fba2f64c5475cd6 100644 --- a/yarn.lock +++ b/yarn.lock @@ -10,7 +10,7 @@ "@jridgewell/gen-mapping" "^0.3.0" "@jridgewell/trace-mapping" "^0.3.9" -"@babel/code-frame@^7.0.0", "@babel/code-frame@^7.22.13": +"@babel/code-frame@^7.22.13": version "7.22.13" resolved "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.22.13.tgz" integrity sha512-XktuhWlJ5g+3TJXc5upd9Ks1HutSArik6jf2eAjYFyIOf4ej3RN+184cZbzDvbPnuTJIUhPKKJE3cIsYTiAT3w== @@ -23,7 +23,7 @@ resolved "https://registry.npmjs.org/@babel/compat-data/-/compat-data-7.22.9.tgz" integrity sha512-5UamI7xkUcJ3i9qVDS+KFDEK8/7oJ55/sJMB1Ge7IEapr7KfdfV/HErR+koZwOfd+SgtFKOKRhRakdg++DcJpQ== -"@babel/core@^7.0.0", "@babel/core@^7.0.0-0", "@babel/core@^7.0.0-0 || ^8.0.0-0 <8.0.0", "@babel/core@^7.12.0", "@babel/core@^7.13.0", "@babel/core@^7.16.7", "@babel/core@^7.4.0 || ^8.0.0-0 <8.0.0": +"@babel/core@^7.16.7": version "7.22.17" resolved "https://registry.npmjs.org/@babel/core/-/core-7.22.17.tgz" integrity sha512-2EENLmhpwplDux5PSsZnSbnSkB3tZ6QTksgO25xwEL7pIDcNOMhF5v/s6RzwjMZzZzw9Ofc30gHv5ChCC8pifQ== @@ -939,11 +939,6 @@ resolved "https://registry.npmjs.org/@colors/colors/-/colors-1.5.0.tgz" integrity sha512-ooWCrlZP11i8GImSjTHYHLkvFDP48nS4+204nGb1RiX/WXYHmJA2III9/e2DWVabCESdW7hBAEzHRqUn9OUVvQ== -"@csstools/selector-specificity@^2.0.2": - version "2.2.0" - resolved "https://registry.npmjs.org/@csstools/selector-specificity/-/selector-specificity-2.2.0.tgz" - integrity sha512-+OJ9konv95ClSTOJCmMZqpd5+YGsB2S+x6w3E1oaM8UuR5j8nTNHYSz8c9BEPGDOCMQYIEEGlVPj/VY64iTbGw== - "@dabh/diagnostics@^2.0.2": version "2.0.3" resolved "https://registry.npmjs.org/@dabh/diagnostics/-/diagnostics-2.0.3.tgz" @@ -1011,7 +1006,7 @@ "@nodelib/fs.stat" "2.0.5" run-parallel "^1.1.9" -"@nodelib/fs.stat@^2.0.2", "@nodelib/fs.stat@2.0.5": +"@nodelib/fs.stat@2.0.5", "@nodelib/fs.stat@^2.0.2": version "2.0.5" resolved "https://registry.npmjs.org/@nodelib/fs.stat/-/fs.stat-2.0.5.tgz" integrity sha512-RkhPPp2zrqDAQA/2jNhnztcPAlv64XdhIp7a7454A5ovI7Bukxgt7MX7udwAu3zg1DcpPU0rz3VV1SeaqvY4+A== @@ -1100,26 +1095,11 @@ resolved "https://registry.npmjs.org/@types/minimatch/-/minimatch-5.1.2.tgz" integrity sha512-K0VQKziLUWkVKiRVrx4a40iPaxTUefQmjtkQofBkYRcoaaL/8rhwDWww9qWbrgicNOgnpIsMxyNIUM4+n6dUIA== -"@types/minimist@^1.2.0": - version "1.2.5" - resolved "https://registry.npmjs.org/@types/minimist/-/minimist-1.2.5.tgz" - integrity sha512-hov8bUuiLiyFPGyFPE1lwWhmzYbirOXQNNo40+y3zow8aFVTeyn3VWL0VFFfdNddA8S4Vf0Tc062rzyNr7Paag== - "@types/node@*", "@types/node@>=10.0.0": version "20.6.0" resolved "https://registry.npmjs.org/@types/node/-/node-20.6.0.tgz" integrity sha512-najjVq5KN2vsH2U/xyh2opaSEz6cZMR2SetLIlxlj08nOcmPOemJmUK2o4kUzfLqfrWE0PIrNeE16XhYDd3nqg== -"@types/normalize-package-data@^2.4.0": - version "2.4.4" - resolved "https://registry.npmjs.org/@types/normalize-package-data/-/normalize-package-data-2.4.4.tgz" - integrity sha512-37i+OaWTh9qeK4LSHPsyRC7NahnGotNuZvjLSgcPzblpHB3rrCJxAOgI5gCdKm7coonsaX1Of0ILiTcnZjbfxA== - -"@types/parse-json@^4.0.0": - version "4.0.2" - resolved "https://registry.npmjs.org/@types/parse-json/-/parse-json-4.0.2.tgz" - integrity sha512-dISoDXWWQwUquiKsyZ4Ng+HX2KsPL7LyHKHQwgGFEA3IaKac4Obd+h2a/a6waisAoepJlBcx9paWqjA8/HVjCw== - "@types/q@^1.5.1": version "1.5.6" resolved "https://registry.npmjs.org/@types/q/-/q-1.5.6.tgz" @@ -1152,19 +1132,19 @@ mux.js "7.0.1" video.js "^7 || ^8" -"@videojs/vhs-utils@^3.0.5": - 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integrity sha512-c2k48R0PwKIqKhPMWjeiF6y2xY/gPMUlro0sgxqXpbOIohWiLNXWslsootttv7E1e73QPAMQSg5FeySbVcpsPQ== - dependencies: - cliui "^7.0.2" - escalade "^3.1.1" - get-caller-file "^2.0.5" - require-directory "^2.1.1" - string-width "^4.2.0" - y18n "^5.0.5" - yargs-parser "^20.2.2" - yauzl@^2.10.0, yauzl@^2.4.2: version "2.10.0" resolved "https://registry.npmjs.org/yauzl/-/yauzl-2.10.0.tgz"