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Diffstat (limited to 'web/stream.gathering.org/resources/js/videojs-contrib-hls.js')
| -rw-r--r-- | web/stream.gathering.org/resources/js/videojs-contrib-hls.js | 11691 |
1 files changed, 0 insertions, 11691 deletions
diff --git a/web/stream.gathering.org/resources/js/videojs-contrib-hls.js b/web/stream.gathering.org/resources/js/videojs-contrib-hls.js deleted file mode 100644 index d36bd99..0000000 --- a/web/stream.gathering.org/resources/js/videojs-contrib-hls.js +++ /dev/null @@ -1,11691 +0,0 @@ -/** - * videojs-contrib-hls - * @version 2.0.1 - * @copyright 2016 Brightcove, Inc - * @license Apache-2.0 - */ -(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.videojsContribHls = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){ -'use strict'; - -Object.defineProperty(exports, '__esModule', { - value: true -}); -var textRange = function textRange(range, i) { - return range.start(i) + '-' + range.end(i); -}; - -var formatHexString = function formatHexString(e, i) { - var value = e.toString(16); - - return '00'.substring(0, 2 - value.length) + value + (i % 2 ? ' ' : ''); -}; -var formatAsciiString = function formatAsciiString(e) { - if (e >= 0x20 && e < 0x7e) { - return String.fromCharCode(e); - } - return '.'; -}; - -var utils = { - hexDump: function hexDump(data) { - var bytes = Array.prototype.slice.call(data); - var step = 16; - var result = ''; - var hex = undefined; - var ascii = undefined; - - for (var j = 0; j < bytes.length / step; j++) { - hex = bytes.slice(j * step, j * step + step).map(formatHexString).join(''); - ascii = bytes.slice(j * step, j * step + step).map(formatAsciiString).join(''); - result += hex + ' ' + ascii + '\n'; - } - return result; - }, - tagDump: function tagDump(tag) { - return utils.hexDump(tag.bytes); - }, - textRanges: function textRanges(ranges) { - var result = ''; - var i = undefined; - - for (i = 0; i < ranges.length; i++) { - result += textRange(ranges, i) + ' '; - } - return result; - } -}; - -exports['default'] = utils; -module.exports = exports['default']; -},{}],2:[function(require,module,exports){ -/* - * aes.js - * - * This file contains an adaptation of the AES decryption algorithm - * from the Standford Javascript Cryptography Library. That work is - * covered by the following copyright and permissions notice: - * - * Copyright 2009-2010 Emily Stark, Mike Hamburg, Dan Boneh. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials provided - * with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, - * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE - * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN - * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * The views and conclusions contained in the software and documentation - * are those of the authors and should not be interpreted as representing - * official policies, either expressed or implied, of the authors. - */ - -/** - * Expand the S-box tables. - * - * @private - */ -'use strict'; - -Object.defineProperty(exports, '__esModule', { - value: true -}); - -var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })(); - -function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } } - -var precompute = function precompute() { - var tables = [[[], [], [], [], []], [[], [], [], [], []]]; - var encTable = tables[0]; - var decTable = tables[1]; - var sbox = encTable[4]; - var sboxInv = decTable[4]; - var i = undefined; - var x = undefined; - var xInv = undefined; - var d = []; - var th = []; - var x2 = undefined; - var x4 = undefined; - var x8 = undefined; - var s = undefined; - var tEnc = undefined; - var tDec = undefined; - - // Compute double and third tables - for (i = 0; i < 256; i++) { - th[(d[i] = i << 1 ^ (i >> 7) * 283) ^ i] = i; - } - - for (x = xInv = 0; !sbox[x]; x ^= x2 || 1, xInv = th[xInv] || 1) { - // Compute sbox - s = xInv ^ xInv << 1 ^ xInv << 2 ^ xInv << 3 ^ xInv << 4; - s = s >> 8 ^ s & 255 ^ 99; - sbox[x] = s; - sboxInv[s] = x; - - // Compute MixColumns - x8 = d[x4 = d[x2 = d[x]]]; - tDec = x8 * 0x1010101 ^ x4 * 0x10001 ^ x2 * 0x101 ^ x * 0x1010100; - tEnc = d[s] * 0x101 ^ s * 0x1010100; - - for (i = 0; i < 4; i++) { - encTable[i][x] = tEnc = tEnc << 24 ^ tEnc >>> 8; - decTable[i][s] = tDec = tDec << 24 ^ tDec >>> 8; - } - } - - // Compactify. Considerable speedup on Firefox. - for (i = 0; i < 5; i++) { - encTable[i] = encTable[i].slice(0); - decTable[i] = decTable[i].slice(0); - } - return tables; -}; -var aesTables = null; - -/** - * Schedule out an AES key for both encryption and decryption. This - * is a low-level class. Use a cipher mode to do bulk encryption. - * - * @constructor - * @param key {Array} The key as an array of 4, 6 or 8 words. - */ - -var AES = (function () { - function AES(key) { - _classCallCheck(this, AES); - - /** - * The expanded S-box and inverse S-box tables. These will be computed - * on the client so that we don't have to send them down the wire. - * - * There are two tables, _tables[0] is for encryption and - * _tables[1] is for decryption. - * - * The first 4 sub-tables are the expanded S-box with MixColumns. The - * last (_tables[01][4]) is the S-box itself. - * - * @private - */ - // if we have yet to precompute the S-box tables - // do so now - if (!aesTables) { - aesTables = precompute(); - } - // then make a copy of that object for use - 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()]]; - var i = undefined; - var j = undefined; - var tmp = undefined; - var encKey = undefined; - var decKey = undefined; - var sbox = this._tables[0][4]; - var decTable = this._tables[1]; - var keyLen = key.length; - var rcon = 1; - - if (keyLen !== 4 && keyLen !== 6 && keyLen !== 8) { - throw new Error('Invalid aes key size'); - } - - encKey = key.slice(0); - decKey = []; - this._key = [encKey, decKey]; - - // schedule encryption keys - for (i = keyLen; i < 4 * keyLen + 28; i++) { - tmp = encKey[i - 1]; - - // apply sbox - if (i % keyLen === 0 || keyLen === 8 && i % keyLen === 4) { - tmp = sbox[tmp >>> 24] << 24 ^ sbox[tmp >> 16 & 255] << 16 ^ sbox[tmp >> 8 & 255] << 8 ^ sbox[tmp & 255]; - - // shift rows and add rcon - if (i % keyLen === 0) { - tmp = tmp << 8 ^ tmp >>> 24 ^ rcon << 24; - rcon = rcon << 1 ^ (rcon >> 7) * 283; - } - } - - encKey[i] = encKey[i - keyLen] ^ tmp; - } - - // schedule decryption keys - for (j = 0; i; j++, i--) { - tmp = encKey[j & 3 ? i : i - 4]; - if (i <= 4 || j < 4) { - decKey[j] = tmp; - } else { - decKey[j] = decTable[0][sbox[tmp >>> 24]] ^ decTable[1][sbox[tmp >> 16 & 255]] ^ decTable[2][sbox[tmp >> 8 & 255]] ^ decTable[3][sbox[tmp & 255]]; - } - } - } - - /** - * Decrypt 16 bytes, specified as four 32-bit words. - * @param encrypted0 {number} the first word to decrypt - * @param encrypted1 {number} the second word to decrypt - * @param encrypted2 {number} the third word to decrypt - * @param encrypted3 {number} the fourth word to decrypt - * @param out {Int32Array} the array to write the decrypted words - * into - * @param offset {number} the offset into the output array to start - * writing results - * @return {Array} The plaintext. - */ - - _createClass(AES, [{ - key: 'decrypt', - value: function decrypt(encrypted0, encrypted1, encrypted2, encrypted3, out, offset) { - var key = this._key[1]; - // state variables a,b,c,d are loaded with pre-whitened data - var a = encrypted0 ^ key[0]; - var b = encrypted3 ^ key[1]; - var c = encrypted2 ^ key[2]; - var d = encrypted1 ^ key[3]; - var a2 = undefined; - var b2 = undefined; - var c2 = undefined; - - // key.length === 2 ? - var nInnerRounds = key.length / 4 - 2; - var i = undefined; - var kIndex = 4; - var table = this._tables[1]; - - // load up the tables - var table0 = table[0]; - var table1 = table[1]; - var table2 = table[2]; - var table3 = table[3]; - var sbox = table[4]; - - // Inner rounds. Cribbed from OpenSSL. - for (i = 0; i < nInnerRounds; i++) { - a2 = table0[a >>> 24] ^ table1[b >> 16 & 255] ^ table2[c >> 8 & 255] ^ table3[d & 255] ^ key[kIndex]; - b2 = table0[b >>> 24] ^ table1[c >> 16 & 255] ^ table2[d >> 8 & 255] ^ table3[a & 255] ^ key[kIndex + 1]; - c2 = table0[c >>> 24] ^ table1[d >> 16 & 255] ^ table2[a >> 8 & 255] ^ table3[b & 255] ^ key[kIndex + 2]; - d = table0[d >>> 24] ^ table1[a >> 16 & 255] ^ table2[b >> 8 & 255] ^ table3[c & 255] ^ key[kIndex + 3]; - kIndex += 4; - a = a2;b = b2;c = c2; - } - - // Last round. - for (i = 0; i < 4; i++) { - out[(3 & -i) + offset] = sbox[a >>> 24] << 24 ^ sbox[b >> 16 & 255] << 16 ^ sbox[c >> 8 & 255] << 8 ^ sbox[d & 255] ^ key[kIndex++]; - a2 = a;a = b;b = c;c = d;d = a2; - } - } - }]); - - return AES; -})(); - -exports['default'] = AES; -module.exports = exports['default']; -},{}],3:[function(require,module,exports){ -'use strict'; - -Object.defineProperty(exports, '__esModule', { - value: true -}); - -var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })(); - -var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } }; - -function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; } - -function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } } - -function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } - -var _stream = require('../stream'); - -var _stream2 = _interopRequireDefault(_stream); - -/** - * A wrapper around the Stream class to use setTiemout - * and run stream "jobs" Asynchronously - */ - -var AsyncStream = (function (_Stream) { - _inherits(AsyncStream, _Stream); - - function AsyncStream() { - _classCallCheck(this, AsyncStream); - - _get(Object.getPrototypeOf(AsyncStream.prototype), 'constructor', this).call(this, _stream2['default']); - this.jobs = []; - this.delay = 1; - this.timeout_ = null; - } - - _createClass(AsyncStream, [{ - key: 'processJob_', - value: function processJob_() { - this.jobs.shift()(); - if (this.jobs.length) { - this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay); - } else { - this.timeout_ = null; - } - } - }, { - key: 'push', - value: function push(job) { - this.jobs.push(job); - if (!this.timeout_) { - this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay); - } - } - }]); - - return AsyncStream; -})(_stream2['default']); - -exports['default'] = AsyncStream; -module.exports = exports['default']; -},{"../stream":13}],4:[function(require,module,exports){ -/* - * decrypter.js - * - * An asynchronous implementation of AES-128 CBC decryption with - * PKCS#7 padding. - */ - -'use strict'; - -Object.defineProperty(exports, '__esModule', { - value: true -}); - -var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })(); - -function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; } - -function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } } - -var _aes = require('./aes'); - -var _aes2 = _interopRequireDefault(_aes); - -var _asyncStream = require('./async-stream'); - -var _asyncStream2 = _interopRequireDefault(_asyncStream); - -var _pkcs7 = require('pkcs7'); - -/** - * Convert network-order (big-endian) bytes into their little-endian - * representation. - */ -var ntoh = function ntoh(word) { - return word << 24 | (word & 0xff00) << 8 | (word & 0xff0000) >> 8 | word >>> 24; -}; - -/* eslint-disable max-len */ -/** - * Decrypt bytes using AES-128 with CBC and PKCS#7 padding. - * @param encrypted {Uint8Array} the encrypted bytes - * @param key {Uint32Array} the bytes of the decryption key - * @param initVector {Uint32Array} the initialization vector (IV) to - * use for the first round of CBC. - * @return {Uint8Array} the decrypted bytes - * - * @see http://en.wikipedia.org/wiki/Advanced_Encryption_Standard - * @see http://en.wikipedia.org/wiki/Block_cipher_mode_of_operation#Cipher_Block_Chaining_.28CBC.29 - * @see https://tools.ietf.org/html/rfc2315 - */ -/* eslint-enable max-len */ -var decrypt = function decrypt(encrypted, key, initVector) { - // word-level access to the encrypted bytes - var encrypted32 = new Int32Array(encrypted.buffer, encrypted.byteOffset, encrypted.byteLength >> 2); - - var decipher = new _aes2['default'](Array.prototype.slice.call(key)); - - // byte and word-level access for the decrypted output - var decrypted = new Uint8Array(encrypted.byteLength); - var decrypted32 = new Int32Array(decrypted.buffer); - - // temporary variables for working with the IV, encrypted, and - // decrypted data - var init0 = undefined; - var init1 = undefined; - var init2 = undefined; - var init3 = undefined; - var encrypted0 = undefined; - var encrypted1 = undefined; - var encrypted2 = undefined; - var encrypted3 = undefined; - - // iteration variable - var wordIx = undefined; - - // pull out the words of the IV to ensure we don't modify the - // passed-in reference and easier access - init0 = initVector[0]; - init1 = initVector[1]; - init2 = initVector[2]; - init3 = initVector[3]; - - // decrypt four word sequences, applying cipher-block chaining (CBC) - // to each decrypted block - for (wordIx = 0; wordIx < encrypted32.length; wordIx += 4) { - // convert big-endian (network order) words into little-endian - // (javascript order) - encrypted0 = ntoh(encrypted32[wordIx]); - encrypted1 = ntoh(encrypted32[wordIx + 1]); - encrypted2 = ntoh(encrypted32[wordIx + 2]); - encrypted3 = ntoh(encrypted32[wordIx + 3]); - - // decrypt the block - decipher.decrypt(encrypted0, encrypted1, encrypted2, encrypted3, decrypted32, wordIx); - - // XOR with the IV, and restore network byte-order to obtain the - // plaintext - decrypted32[wordIx] = ntoh(decrypted32[wordIx] ^ init0); - decrypted32[wordIx + 1] = ntoh(decrypted32[wordIx + 1] ^ init1); - decrypted32[wordIx + 2] = ntoh(decrypted32[wordIx + 2] ^ init2); - decrypted32[wordIx + 3] = ntoh(decrypted32[wordIx + 3] ^ init3); - - // setup the IV for the next round - init0 = encrypted0; - init1 = encrypted1; - init2 = encrypted2; - init3 = encrypted3; - } - - return decrypted; -}; - -exports.decrypt = decrypt; -/** - * The `Decrypter` class that manages decryption of AES - * data through `AsyncStream` objects and the `decrypt` - * function - */ - -var Decrypter = (function () { - function Decrypter(encrypted, key, initVector, done) { - _classCallCheck(this, Decrypter); - - var step = Decrypter.STEP; - var encrypted32 = new Int32Array(encrypted.buffer); - var decrypted = new Uint8Array(encrypted.byteLength); - var i = 0; - - this.asyncStream_ = new _asyncStream2['default'](); - - // split up the encryption job and do the individual chunks asynchronously - this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i, i + step), key, initVector, decrypted)); - for (i = step; i < encrypted32.length; i += step) { - initVector = new Uint32Array([ntoh(encrypted32[i - 4]), ntoh(encrypted32[i - 3]), ntoh(encrypted32[i - 2]), ntoh(encrypted32[i - 1])]); - this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i, i + step), key, initVector, decrypted)); - } - // invoke the done() callback when everything is finished - this.asyncStream_.push(function () { - // remove pkcs#7 padding from the decrypted bytes - done(null, (0, _pkcs7.unpad)(decrypted)); - }); - } - - // the maximum number of bytes to process at one time - // 4 * 8000; - - _createClass(Decrypter, [{ - key: 'decryptChunk_', - value: function decryptChunk_(encrypted, key, initVector, decrypted) { - return function () { - var bytes = decrypt(encrypted, key, initVector); - - decrypted.set(bytes, encrypted.byteOffset); - }; - } - }]); - - return Decrypter; -})(); - -exports.Decrypter = Decrypter; -Decrypter.STEP = 32000; - -exports['default'] = { - Decrypter: Decrypter, - decrypt: decrypt -}; -},{"./aes":2,"./async-stream":3,"pkcs7":18}],5:[function(require,module,exports){ -/* - * index.js - * - * Index module to easily import the primary components of AES-128 - * decryption. Like this: - * - * ```js - * import {Decrypter, decrypt, AsyncStream} from './src/decrypter'; - * ``` - */ -'use strict'; - -Object.defineProperty(exports, '__esModule', { - value: true -}); - -function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; } - -var _decrypter = require('./decrypter'); - -var _asyncStream = require('./async-stream'); - -var _asyncStream2 = _interopRequireDefault(_asyncStream); - -exports['default'] = { - decrypt: _decrypter.decrypt, - Decrypter: _decrypter.Decrypter, - AsyncStream: _asyncStream2['default'] -}; -module.exports = exports['default']; -},{"./async-stream":3,"./decrypter":4}],6:[function(require,module,exports){ -/** - * Utilities for parsing M3U8 files. If the entire manifest is available, - * `Parser` will create an object representation with enough detail for managing - * playback. `ParseStream` and `LineStream` are lower-level parsing primitives - * that do not assume the entirety of the manifest is ready and expose a - * ReadableStream-like interface. - */ - -'use strict'; - -Object.defineProperty(exports, '__esModule', { - value: true -}); - -function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; } - -var _lineStream = require('./line-stream'); - -var _lineStream2 = _interopRequireDefault(_lineStream); - -var _parseStream = require('./parse-stream'); - -var _parseStream2 = _interopRequireDefault(_parseStream); - -var _parser = require('./parser'); - -var _parser2 = _interopRequireDefault(_parser); - -exports['default'] = { - LineStream: _lineStream2['default'], - ParseStream: _parseStream2['default'], - Parser: _parser2['default'] -}; -module.exports = exports['default']; -},{"./line-stream":7,"./parse-stream":8,"./parser":9}],7:[function(require,module,exports){ -'use strict'; - -Object.defineProperty(exports, '__esModule', { - value: true -}); - -var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })(); - -var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } }; - -function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; } - -function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } } - -function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } - -var _stream = require('../stream'); - -var _stream2 = _interopRequireDefault(_stream); - -/** - * A stream that buffers string input and generates a `data` event for each - * line. - */ - -var LineStream = (function (_Stream) { - _inherits(LineStream, _Stream); - - function LineStream() { - _classCallCheck(this, LineStream); - - _get(Object.getPrototypeOf(LineStream.prototype), 'constructor', this).call(this); - this.buffer = ''; - } - - /** - * Add new data to be parsed. - * @param data {string} the text to process - */ - - _createClass(LineStream, [{ - key: 'push', - value: function push(data) { - var nextNewline = undefined; - - 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); - } - } - }]); - - return LineStream; -})(_stream2['default']); - -exports['default'] = LineStream; -module.exports = exports['default']; -},{"../stream":13}],8:[function(require,module,exports){ -'use strict'; - -Object.defineProperty(exports, '__esModule', { - value: true -}); - -var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })(); - -var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } }; - -function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; } - -function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } } - -function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } - -var _stream = require('../stream'); - -var _stream2 = _interopRequireDefault(_stream); - -// "forgiving" attribute list psuedo-grammar: -// attributes -> keyvalue (',' keyvalue)* -// keyvalue -> key '=' value -// key -> [^=]* -// value -> '"' [^"]* '"' | [^,]* -var attributeSeparator = function attributeSeparator() { - var key = '[^=]*'; - var value = '"[^"]*"|[^,]*'; - var keyvalue = '(?:' + key + ')=(?:' + value + ')'; - - return new RegExp('(?:^|,)(' + keyvalue + ')'); -}; - -var parseAttributes = function parseAttributes(attributes) { - // split the string using attributes as the separator - var attrs = attributes.split(attributeSeparator()); - var i = attrs.length; - var result = {}; - var attr = undefined; - - while (i--) { - // filter out unmatched portions of the string - if (attrs[i] === '') { - continue; - } - - // split the key and value - 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, '$1'); - result[attr[0]] = attr[1]; - } - return result; -}; - -/** - * A line-level M3U8 parser event stream. It expects to receive input one - * line at a time and performs a context-free parse of its contents. A stream - * interpretation of a manifest can be useful if the manifest is expected to - * be too large to fit comfortably into memory or the entirety of the input - * is not immediately available. Otherwise, it's probably much easier to work - * with a regular `Parser` object. - * - * Produces `data` events with an object that captures the parser's - * interpretation of the input. That object has a property `tag` that is one - * of `uri`, `comment`, or `tag`. URIs only have a single additional - * property, `line`, which captures the entirety of the input without - * interpretation. Comments similarly have a single additional property - * `text` which is the input without the leading `#`. - * - * Tags always have a property `tagType` which is the lower-cased version of - * the M3U8 directive without the `#EXT` or `#EXT-X-` prefix. For instance, - * `#EXT-X-MEDIA-SEQUENCE` becomes `media-sequence` when parsed. Unrecognized - * tags are given the tag type `unknown` and a single additional property - * `data` with the remainder of the input. - */ - -var ParseStream = (function (_Stream) { - _inherits(ParseStream, _Stream); - - function ParseStream() { - _classCallCheck(this, ParseStream); - - _get(Object.getPrototypeOf(ParseStream.prototype), 'constructor', this).call(this); - } - - /** - * Parses an additional line of input. - * @param line {string} a single line of an M3U8 file to parse - */ - - _createClass(ParseStream, [{ - key: 'push', - value: function push(line) { - var match = undefined; - var event = undefined; - - // strip whitespace - line = line.replace(/^[\u0000\s]+|[\u0000\s]+$/g, ''); - if (line.length === 0) { - // ignore empty lines - return; - } - - // URIs - if (line[0] !== '#') { - this.trigger('data', { - type: 'uri', - uri: line - }); - return; - } - - // Comments - if (line.indexOf('#EXT') !== 0) { - this.trigger('data', { - type: 'comment', - text: line.slice(1) - }); - return; - } - - // strip off any carriage returns here so the regex matching - // doesn't have to account for them. - line = line.replace('\r', ''); - - // Tags - match = /^#EXTM3U/.exec(line); - if (match) { - this.trigger('data', { - type: 'tag', - tagType: 'm3u' - }); - return; - } - match = /^#EXTINF:?([0-9\.]*)?,?(.*)?$/.exec(line); - if (match) { - event = { - type: 'tag', - tagType: 'inf' - }; - if (match[1]) { - event.duration = parseFloat(match[1]); - } - if (match[2]) { - event.title = match[2]; - } - this.trigger('data', event); - return; - } - match = /^#EXT-X-TARGETDURATION:?([0-9.]*)?/.exec(line); - if (match) { - event = { - type: 'tag', - tagType: 'targetduration' - }; - if (match[1]) { - event.duration = parseInt(match[1], 10); - } - this.trigger('data', event); - return; - } - match = /^#ZEN-TOTAL-DURATION:?([0-9.]*)?/.exec(line); - if (match) { - event = { - type: 'tag', - tagType: 'totalduration' - }; - if (match[1]) { - event.duration = parseInt(match[1], 10); - } - this.trigger('data', event); - return; - } - match = /^#EXT-X-VERSION:?([0-9.]*)?/.exec(line); - if (match) { - event = { - type: 'tag', - tagType: 'version' - }; - if (match[1]) { - event.version = parseInt(match[1], 10); - } - this.trigger('data', event); - return; - } - match = /^#EXT-X-MEDIA-SEQUENCE:?(\-?[0-9.]*)?/.exec(line); - if (match) { - event = { - type: 'tag', - tagType: 'media-sequence' - }; - if (match[1]) { - event.number = parseInt(match[1], 10); - } - this.trigger('data', event); - return; - } - match = /^#EXT-X-DISCONTINUITY-SEQUENCE:?(\-?[0-9.]*)?/.exec(line); - if (match) { - event = { - type: 'tag', - tagType: 'discontinuity-sequence' - }; - if (match[1]) { - event.number = parseInt(match[1], 10); - } - this.trigger('data', event); - return; - } - match = /^#EXT-X-PLAYLIST-TYPE:?(.*)?$/.exec(line); - if (match) { - event = { - type: 'tag', - tagType: 'playlist-type' - }; - if (match[1]) { - event.playlistType = match[1]; - } - this.trigger('data', event); - return; - } - match = /^#EXT-X-BYTERANGE:?([0-9.]*)?@?([0-9.]*)?/.exec(line); - if (match) { - event = { - type: 'tag', - tagType: 'byterange' - }; - if (match[1]) { - event.length = parseInt(match[1], 10); - } - if (match[2]) { - event.offset = parseInt(match[2], 10); - } - this.trigger('data', event); - return; - } - match = /^#EXT-X-ALLOW-CACHE:?(YES|NO)?/.exec(line); - if (match) { - event = { - type: 'tag', - tagType: 'allow-cache' - }; - if (match[1]) { - event.allowed = !/NO/.test(match[1]); - } - this.trigger('data', event); - return; - } - match = /^#EXT-X-STREAM-INF:?(.*)$/.exec(line); - if (match) { - event = { - type: 'tag', - tagType: 'stream-inf' - }; - if (match[1]) { - event.attributes = parseAttributes(match[1]); - - if (event.attributes.RESOLUTION) { - var split = event.attributes.RESOLUTION.split('x'); - var resolution = {}; - - if (split[0]) { - resolution.width = parseInt(split[0], 10); - } - if (split[1]) { - resolution.height = parseInt(split[1], 10); - } - event.attributes.RESOLUTION = resolution; - } - if (event.attributes.BANDWIDTH) { - event.attributes.BANDWIDTH = parseInt(event.attributes.BANDWIDTH, 10); - } - if (event.attributes['PROGRAM-ID']) { - event.attributes['PROGRAM-ID'] = parseInt(event.attributes['PROGRAM-ID'], 10); - } - } - this.trigger('data', event); - return; - } - match = /^#EXT-X-ENDLIST/.exec(line); - if (match) { - this.trigger('data', { - type: 'tag', - tagType: 'endlist' - }); - return; - } - match = /^#EXT-X-DISCONTINUITY/.exec(line); - if (match) { - this.trigger('data', { - type: 'tag', - tagType: 'discontinuity' - }); - return; - } - match = /^#EXT-X-KEY:?(.*)$/.exec(line); - if (match) { - event = { - type: 'tag', - tagType: 'key' - }; - if (match[1]) { - event.attributes = parseAttributes(match[1]); - // parse the IV string into a Uint32Array - if (event.attributes.IV) { - if (event.attributes.IV.substring(0, 2) === '0x') { - event.attributes.IV = event.attributes.IV.substring(2); - } - - 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); - } - } - this.trigger('data', event); - return; - } - - // unknown tag type - this.trigger('data', { - type: 'tag', - data: line.slice(4, line.length) - }); - } - }]); - - return ParseStream; -})(_stream2['default']); - -exports['default'] = ParseStream; -module.exports = exports['default']; -},{"../stream":13}],9:[function(require,module,exports){ -(function (global){ -'use strict'; - -Object.defineProperty(exports, '__esModule', { - value: true -}); - -var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })(); - -var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } }; - -function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; } - -function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } } - -function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } - -var _stream = require('../stream'); - -var _stream2 = _interopRequireDefault(_stream); - -var _lineStream = require('./line-stream'); - -var _lineStream2 = _interopRequireDefault(_lineStream); - -var _parseStream = require('./parse-stream'); - -var _parseStream2 = _interopRequireDefault(_parseStream); - -var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null); - -/** - * 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 videojs.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. - */ - -var Parser = (function (_Stream) { - _inherits(Parser, _Stream); - - function Parser() { - _classCallCheck(this, Parser); - - _get(Object.getPrototypeOf(Parser.prototype), 'constructor', this).call(this); - this.lineStream = new _lineStream2['default'](); - this.parseStream = new _parseStream2['default'](); - this.lineStream.pipe(this.parseStream); - /* eslint-disable consistent-this */ - var self = this; - /* eslint-enable consistent-this */ - var uris = []; - var currentUri = {}; - var _key = undefined; - var noop = function noop() {}; - - // the manifest is empty until the parse stream begins delivering data - this.manifest = { - allowCache: true, - discontinuityStarts: [] - }; - - // update the manifest with the m3u8 entry from the parse stream - this.parseStream.on('data', function (entry) { - ({ - tag: function tag() { - // switch based on the tag type - (({ - 'allow-cache': function allowCache() { - this.manifest.allowCache = entry.allowed; - if (!('allowed' in entry)) { - this.trigger('info', { - message: 'defaulting allowCache to YES' - }); - this.manifest.allowCache = true; - } - }, - byterange: function byterange() { - var byterange = {}; - - if ('length' in entry) { - currentUri.byterange = byterange; - byterange.length = entry.length; - - if (!('offset' in entry)) { - this.trigger('info', { - message: 'defaulting offset to zero' - }); - entry.offset = 0; - } - } - if ('offset' in entry) { - currentUri.byterange = byterange; - byterange.offset = entry.offset; - } - }, - endlist: function endlist() { - this.manifest.endList = true; - }, - inf: function inf() { - if (!('mediaSequence' in this.manifest)) { - this.manifest.mediaSequence = 0; - this.trigger('info', { - message: 'defaulting media sequence to zero' - }); - } - 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; - } - - this.manifest.segments = uris; - }, - key: function key() { - if (!entry.attributes) { - this.trigger('warn', { - message: 'ignoring key declaration without attribute list' - }); - return; - } - // clear the active encryption key - if (entry.attributes.METHOD === 'NONE') { - _key = null; - return; - } - if (!entry.attributes.URI) { - this.trigger('warn', { - message: 'ignoring key declaration without URI' - }); - return; - } - if (!entry.attributes.METHOD) { - this.trigger('warn', { - message: 'defaulting key method to AES-128' - }); - } - - // setup an encryption key for upcoming segments - _key = { - method: entry.attributes.METHOD || 'AES-128', - uri: entry.attributes.URI - }; - - if (typeof entry.attributes.IV !== 'undefined') { - _key.iv = entry.attributes.IV; - } - }, - 'media-sequence': function mediaSequence() { - if (!isFinite(entry.number)) { - this.trigger('warn', { - message: 'ignoring invalid media sequence: ' + entry.number - }); - return; - } - this.manifest.mediaSequence = entry.number; - }, - 'discontinuity-sequence': function discontinuitySequence() { - if (!isFinite(entry.number)) { - this.trigger('warn', { - message: 'ignoring invalid discontinuity sequence: ' + entry.number - }); - return; - } - this.manifest.discontinuitySequence = entry.number; - }, - 'playlist-type': function playlistType() { - if (!/VOD|EVENT/.test(entry.playlistType)) { - this.trigger('warn', { - message: 'ignoring unknown playlist type: ' + entry.playlist - }); - return; - } - this.manifest.playlistType = entry.playlistType; - }, - 'stream-inf': function streamInf() { - this.manifest.playlists = uris; - - if (!entry.attributes) { - this.trigger('warn', { - message: 'ignoring empty stream-inf attributes' - }); - return; - } - - if (!currentUri.attributes) { - currentUri.attributes = {}; - } - currentUri.attributes = (0, _videoJs.mergeOptions)(currentUri.attributes, entry.attributes); - }, - discontinuity: function discontinuity() { - currentUri.discontinuity = true; - this.manifest.discontinuityStarts.push(uris.length); - }, - targetduration: function targetduration() { - if (!isFinite(entry.duration) || entry.duration < 0) { - this.trigger('warn', { - message: 'ignoring invalid target duration: ' + entry.duration - }); - return; - } - this.manifest.targetDuration = entry.duration; - }, - totalduration: function totalduration() { - if (!isFinite(entry.duration) || entry.duration < 0) { - this.trigger('warn', { - message: 'ignoring invalid total duration: ' + entry.duration - }); - return; - } - this.manifest.totalDuration = entry.duration; - } - })[entry.tagType] || noop).call(self); - }, - uri: function 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; - } - - // prepare for the next URI - currentUri = {}; - }, - comment: function comment() { - // comments are not important for playback - } - })[entry.type].call(self); - }); - } - - /** - * Parse the input string and update the manifest object. - * @param chunk {string} a potentially incomplete portion of the manifest - */ - - _createClass(Parser, [{ - key: 'push', - value: function 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. - */ - }, { - key: 'end', - value: function end() { - // flush any buffered input - this.lineStream.push('\n'); - } - }]); - - return Parser; -})(_stream2['default']); - -exports['default'] = Parser; -module.exports = exports['default']; -}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{"../stream":13,"./line-stream":7,"./parse-stream":8}],10:[function(require,module,exports){ -(function (global){ -/** - * playlist-loader - * - * A state machine that manages the loading, caching, and updating of - * M3U8 playlists. - * - */ -'use strict'; - -Object.defineProperty(exports, '__esModule', { - value: true -}); - -var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })(); - -var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } }; - -function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; } - -function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } } - -function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } - -var _resolveUrl = require('./resolve-url'); - -var _resolveUrl2 = _interopRequireDefault(_resolveUrl); - -var _xhr = require('./xhr'); - -var _xhr2 = _interopRequireDefault(_xhr); - -var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null); - -var _stream = require('./stream'); - -var _stream2 = _interopRequireDefault(_stream); - -var _m3u8 = require('./m3u8'); - -var _m3u82 = _interopRequireDefault(_m3u8); - -/** - * Returns a new master playlist that is the result of merging an - * updated media playlist into the original version. If the - * updated media playlist does not match any of the playlist - * entries in the original master playlist, null is returned. - * @param master {object} a parsed master M3U8 object - * @param media {object} a parsed media M3U8 object - * @return {object} a new object that represents the original - * master playlist with the updated media playlist merged in, or - * null if the merge produced no change. - */ -var updateMaster = function updateMaster(master, media) { - var changed = false; - var result = (0, _videoJs.mergeOptions)(master, {}); - var i = master.playlists.length; - var playlist = undefined; - - while (i--) { - playlist = result.playlists[i]; - if (playlist.uri === media.uri) { - // consider the playlist unchanged if the number of segments - // are equal and the media sequence number is unchanged - if (playlist.segments && media.segments && playlist.segments.length === media.segments.length && playlist.mediaSequence === media.mediaSequence) { - continue; - } - - result.playlists[i] = (0, _videoJs.mergeOptions)(playlist, media); - result.playlists[media.uri] = result.playlists[i]; - - // if the update could overlap existing segment information, - // merge the two lists - if (playlist.segments) { - result.playlists[i].segments = updateSegments(playlist.segments, media.segments, media.mediaSequence - playlist.mediaSequence); - } - changed = true; - } - } - return changed ? result : null; -}; - -/** - * Returns a new array of segments that is the result of merging - * properties from an older list of segments onto an updated - * list. No properties on the updated playlist will be overridden. - * @param original {array} the outdated list of segments - * @param update {array} the updated list of segments - * @param offset {number} (optional) the index of the first update - * segment in the original segment list. For non-live playlists, - * this should always be zero and does not need to be - * specified. For live playlists, it should be the difference - * between the media sequence numbers in the original and updated - * playlists. - * @return a list of merged segment objects - */ -var updateSegments = function updateSegments(original, update, offset) { - var result = update.slice(); - var length = undefined; - var i = undefined; - - offset = offset || 0; - length = Math.min(original.length, update.length + offset); - - for (i = offset; i < length; i++) { - result[i - offset] = (0, _videoJs.mergeOptions)(original[i], result[i - offset]); - } - return result; -}; - -var PlaylistLoader = (function (_Stream) { - _inherits(PlaylistLoader, _Stream); - - function PlaylistLoader(srcUrl, withCredentials) { - _classCallCheck(this, PlaylistLoader); - - _get(Object.getPrototypeOf(PlaylistLoader.prototype), 'constructor', this).call(this); - var loader = this; - var dispose = undefined; - var mediaUpdateTimeout = undefined; - var request = undefined; - var playlistRequestError = undefined; - var haveMetadata = undefined; - - // a flag that disables "expired time"-tracking this setting has - // no effect when not playing a live stream - this.trackExpiredTime_ = false; - - if (!srcUrl) { - throw new Error('A non-empty playlist URL is required'); - } - - playlistRequestError = function (xhr, url, startingState) { - loader.setBandwidth(request || xhr); - - // any in-flight request is now finished - request = null; - - if (startingState) { - loader.state = startingState; - } - - loader.error = { - playlist: loader.master.playlists[url], - status: xhr.status, - message: 'HLS playlist request error at URL: ' + url, - responseText: xhr.responseText, - code: xhr.status >= 500 ? 4 : 2 - }; - loader.trigger('error'); - }; - - // update the playlist loader's state in response to a new or - // updated playlist. - - haveMetadata = function (xhr, url) { - var parser = undefined; - var refreshDelay = undefined; - var update = undefined; - - loader.setBandwidth(request || xhr); - - // any in-flight request is now finished - request = null; - loader.state = 'HAVE_METADATA'; - - parser = new _m3u82['default'].Parser(); - parser.push(xhr.responseText); - parser.end(); - parser.manifest.uri = url; - - // merge this playlist into the master - update = updateMaster(loader.master, parser.manifest); - refreshDelay = (parser.manifest.targetDuration || 10) * 1000; - if (update) { - loader.master = update; - loader.updateMediaPlaylist_(parser.manifest); - } else { - // if the playlist is unchanged since the last reload, - // try again after half the target duration - refreshDelay /= 2; - } - - // refresh live playlists after a target duration passes - if (!loader.media().endList) { - window.clearTimeout(mediaUpdateTimeout); - mediaUpdateTimeout = window.setTimeout(function () { - loader.trigger('mediaupdatetimeout'); - }, refreshDelay); - } - - loader.trigger('loadedplaylist'); - }; - - // initialize the loader state - loader.state = 'HAVE_NOTHING'; - - // track the time that has expired from the live window - // this allows the seekable start range to be calculated even if - // all segments with timing information have expired - this.expired_ = 0; - - // capture the prototype dispose function - dispose = this.dispose; - - /** - * Abort any outstanding work and clean up. - */ - loader.dispose = function () { - if (request) { - request.onreadystatechange = null; - request.abort(); - request = null; - } - window.clearTimeout(mediaUpdateTimeout); - dispose.call(this); - }; - - /** - * When called without any arguments, returns the currently - * active media playlist. When called with a single argument, - * triggers the playlist loader to asynchronously switch to the - * specified media playlist. Calling this method while the - * loader is in the HAVE_NOTHING causes an error to be emitted - * but otherwise has no effect. - * @param playlist (optional) {object} the parsed media playlist - * object to switch to - */ - loader.media = function (playlist) { - var startingState = loader.state; - var mediaChange = undefined; - // getter - if (!playlist) { - return loader.media_; - } - - // setter - if (loader.state === 'HAVE_NOTHING') { - throw new Error('Cannot switch media playlist from ' + loader.state); - } - - // find the playlist object if the target playlist has been - // specified by URI - if (typeof playlist === 'string') { - if (!loader.master.playlists[playlist]) { - throw new Error('Unknown playlist URI: ' + playlist); - } - playlist = loader.master.playlists[playlist]; - } - - mediaChange = !loader.media_ || playlist.uri !== loader.media_.uri; - - // switch to fully loaded playlists immediately - if (loader.master.playlists[playlist.uri].endList) { - // abort outstanding playlist requests - if (request) { - request.onreadystatechange = null; - request.abort(); - request = null; - } - loader.state = 'HAVE_METADATA'; - loader.media_ = playlist; - - // trigger media change if the active media has been updated - if (mediaChange) { - loader.trigger('mediachange'); - } - return; - } - - // switching to the active playlist is a no-op - if (!mediaChange) { - return; - } - - loader.state = 'SWITCHING_MEDIA'; - - // there is already an outstanding playlist request - if (request) { - if ((0, _resolveUrl2['default'])(loader.master.uri, playlist.uri) === request.url) { - // requesting to switch to the same playlist multiple times - // has no effect after the first - return; - } - request.onreadystatechange = null; - request.abort(); - request = null; - } - - // request the new playlist - request = (0, _xhr2['default'])({ - uri: (0, _resolveUrl2['default'])(loader.master.uri, playlist.uri), - withCredentials: withCredentials - }, function (error, request) { - if (error) { - return playlistRequestError(request, playlist.uri, startingState); - } - - haveMetadata(request, playlist.uri); - - // fire loadedmetadata the first time a media playlist is loaded - if (startingState === 'HAVE_MASTER') { - loader.trigger('loadedmetadata'); - } else { - loader.trigger('mediachange'); - } - }); - }; - - loader.setBandwidth = function (xhr) { - loader.bandwidth = xhr.bandwidth; - }; - - // In a live list, don't keep track of the expired time until - // HLS tells us that "first play" has commenced - loader.on('firstplay', function () { - this.trackExpiredTime_ = true; - }); - - // live playlist staleness timeout - loader.on('mediaupdatetimeout', function () { - if (loader.state !== 'HAVE_METADATA') { - // only refresh the media playlist if no other activity is going on - return; - } - - loader.state = 'HAVE_CURRENT_METADATA'; - request = (0, _xhr2['default'])({ - uri: (0, _resolveUrl2['default'])(loader.master.uri, loader.media().uri), - withCredentials: withCredentials - }, function (error, request) { - if (error) { - return playlistRequestError(request, loader.media().uri); - } - haveMetadata(request, loader.media().uri); - }); - }); - - // request the specified URL - request = (0, _xhr2['default'])({ - uri: srcUrl, - withCredentials: withCredentials - }, function (error, req) { - var parser = undefined; - var i = undefined; - - // clear the loader's request reference - request = null; - - if (error) { - loader.error = { - status: req.status, - message: 'HLS playlist request error at URL: ' + srcUrl, - responseText: req.responseText, - // MEDIA_ERR_NETWORK - code: 2 - }; - return loader.trigger('error'); - } - - parser = new _m3u82['default'].Parser(); - parser.push(req.responseText); - parser.end(); - - loader.state = 'HAVE_MASTER'; - - parser.manifest.uri = srcUrl; - - // loaded a master playlist - if (parser.manifest.playlists) { - loader.master = parser.manifest; - - // setup by-URI lookups - i = loader.master.playlists.length; - while (i--) { - loader.master.playlists[loader.master.playlists[i].uri] = loader.master.playlists[i]; - } - - loader.trigger('loadedplaylist'); - if (!request) { - // no media playlist was specifically selected so start - // from the first listed one - loader.media(parser.manifest.playlists[0]); - } - return; - } - - // loaded a media playlist - // infer a master playlist if none was previously requested - loader.master = { - uri: window.location.href, - playlists: [{ - uri: srcUrl - }] - }; - loader.master.playlists[srcUrl] = loader.master.playlists[0]; - haveMetadata(req, srcUrl); - return loader.trigger('loadedmetadata'); - }); - } - - /** - * Update the PlaylistLoader state to reflect the changes in an - * update to the current media playlist. - * @param update {object} the updated media playlist object - */ - - _createClass(PlaylistLoader, [{ - key: 'updateMediaPlaylist_', - value: function updateMediaPlaylist_(update) { - var outdated = undefined; - var i = undefined; - var segment = undefined; - - outdated = this.media_; - this.media_ = this.master.playlists[update.uri]; - - if (!outdated) { - return; - } - - // don't track expired time until this flag is truthy - if (!this.trackExpiredTime_) { - return; - } - - // if the update was the result of a rendition switch do not - // attempt to calculate expired_ since media-sequences need not - // correlate between renditions/variants - if (update.uri !== outdated.uri) { - return; - } - - // try using precise timing from first segment of the updated - // playlist - if (update.segments.length) { - if (update.segments[0].start !== undefined) { - this.expired_ = update.segments[0].start; - return; - } else if (update.segments[0].end !== undefined) { - this.expired_ = update.segments[0].end - update.segments[0].duration; - return; - } - } - - // calculate expired by walking the outdated playlist - i = update.mediaSequence - outdated.mediaSequence - 1; - - for (; i >= 0; i--) { - segment = outdated.segments[i]; - - if (!segment) { - // we missed information on this segment completely between - // playlist updates so we'll have to take an educated guess - // once we begin buffering again, any error we introduce can - // be corrected - this.expired_ += outdated.targetDuration || 10; - continue; - } - - if (segment.end !== undefined) { - this.expired_ = segment.end; - return; - } - if (segment.start !== undefined) { - this.expired_ = segment.start + segment.duration; - return; - } - this.expired_ += segment.duration; - } - } - - /** - * Determine the index of the segment that contains a specified - * playback position in the current media playlist. Early versions - * of the HLS specification require segment durations to be rounded - * to the nearest integer which means it may not be possible to - * determine the correct segment for a playback position if that - * position is within .5 seconds of the segment duration. This - * function will always return the lower of the two possible indices - * in those cases. - * - * @param time {number} The number of seconds since the earliest - * possible position to determine the containing segment for - * @returns {number} The number of the media segment that contains - * that time position. If the specified playback position is outside - * the time range of the current set of media segments, the return - * value will be clamped to the index of the segment containing the - * closest playback position that is currently available. - */ - }, { - key: 'getMediaIndexForTime_', - value: function getMediaIndexForTime_(time) { - var i = undefined; - var segment = undefined; - var originalTime = time; - var numSegments = this.media_.segments.length; - var lastSegment = numSegments - 1; - var startIndex = undefined; - var endIndex = undefined; - var knownStart = undefined; - var knownEnd = undefined; - - if (!this.media_) { - return 0; - } - - // when the requested position is earlier than the current set of - // segments, return the earliest segment index - if (time < 0) { - return 0; - } - - // find segments with known timing information that bound the - // target time - for (i = 0; i < numSegments; i++) { - segment = this.media_.segments[i]; - if (segment.end) { - if (segment.end > time) { - knownEnd = segment.end; - endIndex = i; - break; - } else { - knownStart = segment.end; - startIndex = i + 1; - } - } - } - - // use the bounds we just found and playlist information to - // estimate the segment that contains the time we are looking for - if (startIndex !== undefined) { - // We have a known-start point that is before our desired time so - // walk from that point forwards - time = time - knownStart; - for (i = startIndex; i < (endIndex || numSegments); i++) { - segment = this.media_.segments[i]; - time -= segment.duration; - - if (time < 0) { - return i; - } - } - - if (i >= endIndex) { - // We haven't found a segment but we did hit a known end point - // so fallback to interpolating between the segment index - // based on the known span of the timeline we are dealing with - // and the number of segments inside that span - return startIndex + Math.floor((originalTime - knownStart) / (knownEnd - knownStart) * (endIndex - startIndex)); - } - - // We _still_ haven't found a segment so load the last one - return lastSegment; - } else if (endIndex !== undefined) { - // We _only_ have a known-end point that is after our desired time so - // walk from that point backwards - time = knownEnd - time; - for (i = endIndex; i >= 0; i--) { - segment = this.media_.segments[i]; - time -= segment.duration; - - if (time < 0) { - return i; - } - } - - // We haven't found a segment so load the first one if time is zero - if (time === 0) { - return 0; - } else { - return -1; - } - } else { - // We known nothing so walk from the front of the playlist, - // subtracting durations until we find a segment that contains - // time and return it - time = time - this.expired_; - - if (time < 0) { - return -1; - } - - for (i = 0; i < numSegments; i++) { - segment = this.media_.segments[i]; - time -= segment.duration; - if (time < 0) { - return i; - } - } - // We are out of possible candidates so load the last one... - // The last one is the least likely to overlap a buffer and therefore - // the one most likely to tell us something about the timeline - return lastSegment; - } - } - }]); - - return PlaylistLoader; -})(_stream2['default']); - -exports['default'] = PlaylistLoader; -module.exports = exports['default']; -}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{"./m3u8":6,"./resolve-url":12,"./stream":13,"./xhr":14}],11:[function(require,module,exports){ -(function (global){ -/** - * Playlist related utilities. - */ -'use strict'; - -Object.defineProperty(exports, '__esModule', { - value: true -}); - -var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null); - -var Playlist = { - /** - * The number of segments that are unsafe to start playback at in - * a live stream. Changing this value can cause playback stalls. - * See HTTP Live Streaming, "Playing the Media Playlist File" - * https://tools.ietf.org/html/draft-pantos-http-live-streaming-18#section-6.3.3 - */ - UNSAFE_LIVE_SEGMENTS: 3 -}; - -var backwardDuration = function backwardDuration(playlist, endSequence) { - var result = 0; - var i = endSequence - playlist.mediaSequence; - // if a start time is available for segment immediately following - // the interval, use it - var segment = playlist.segments[i]; - - // Walk backward until we find the latest segment with timeline - // information that is earlier than endSequence - if (segment) { - if (typeof segment.start !== 'undefined') { - return { result: segment.start, precise: true }; - } - if (typeof segment.end !== 'undefined') { - return { - result: segment.end - segment.duration, - precise: true - }; - } - } - while (i--) { - segment = playlist.segments[i]; - if (typeof segment.end !== 'undefined') { - return { result: result + segment.end, precise: true }; - } - - result += segment.duration; - - if (typeof segment.start !== 'undefined') { - return { result: result + segment.start, precise: true }; - } - } - return { result: result, precise: false }; -}; - -var forwardDuration = function forwardDuration(playlist, endSequence) { - var result = 0; - var segment = undefined; - var i = endSequence - playlist.mediaSequence; - // Walk forward until we find the earliest segment with timeline - // information - - for (; i < playlist.segments.length; i++) { - segment = playlist.segments[i]; - if (typeof segment.start !== 'undefined') { - return { - result: segment.start - result, - precise: true - }; - } - - result += segment.duration; - - if (typeof segment.end !== 'undefined') { - return { - result: segment.end - result, - precise: true - }; - } - } - // indicate we didn't find a useful duration estimate - return { result: -1, precise: false }; -}; - -/** - * Calculate the media duration from the segments associated with a - * playlist. The duration of a subinterval of the available segments - * may be calculated by specifying an end index. - * - * @param playlist {object} a media playlist object - * @param endSequence {number} (optional) an exclusive upper boundary - * for the playlist. Defaults to playlist length. - * @return {number} the duration between the first available segment - * and end index. - */ -var intervalDuration = function intervalDuration(playlist, endSequence) { - var backward = undefined; - var forward = undefined; - - if (typeof endSequence === 'undefined') { - endSequence = playlist.mediaSequence + playlist.segments.length; - } - - if (endSequence < playlist.mediaSequence) { - return 0; - } - - // do a backward walk to estimate the duration - backward = backwardDuration(playlist, endSequence); - if (backward.precise) { - // if we were able to base our duration estimate on timing - // information provided directly from the Media Source, return - // it - return backward.result; - } - - // walk forward to see if a precise duration estimate can be made - // that way - forward = forwardDuration(playlist, endSequence); - if (forward.precise) { - // we found a segment that has been buffered and so it's - // position is known precisely - return forward.result; - } - - // return the less-precise, playlist-based duration estimate - return backward.result; -}; - -/** - * Calculates the duration of a playlist. If a start and end index - * are specified, the duration will be for the subset of the media - * timeline between those two indices. The total duration for live - * playlists is always Infinity. - * @param playlist {object} a media playlist object - * @param endSequence {number} (optional) an exclusive upper - * boundary for the playlist. Defaults to the playlist media - * sequence number plus its length. - * @param includeTrailingTime {boolean} (optional) if false, the - * interval between the final segment and the subsequent segment - * will not be included in the result - * @return {number} the duration between the start index and end - * index. - */ -var duration = function duration(playlist, endSequence, includeTrailingTime) { - if (!playlist) { - return 0; - } - - if (typeof includeTrailingTime === 'undefined') { - includeTrailingTime = true; - } - - // if a slice of the total duration is not requested, use - // playlist-level duration indicators when they're present - if (typeof endSequence === 'undefined') { - // if present, use the duration specified in the playlist - if (playlist.totalDuration) { - return playlist.totalDuration; - } - - // duration should be Infinity for live playlists - if (!playlist.endList) { - return window.Infinity; - } - } - - // calculate the total duration based on the segment durations - return intervalDuration(playlist, endSequence, includeTrailingTime); -}; - -exports.duration = duration; -/** - * Calculates the interval of time that is currently seekable in a - * playlist. The returned time ranges are relative to the earliest - * moment in the specified playlist that is still available. A full - * seekable implementation for live streams would need to offset - * these values by the duration of content that has expired from the - * stream. - * @param playlist {object} a media playlist object - * @return {TimeRanges} the periods of time that are valid targets - * for seeking - */ -var seekable = function seekable(playlist) { - var start = undefined; - var end = undefined; - - // without segments, there are no seekable ranges - if (!playlist.segments) { - return (0, _videoJs.createTimeRange)(); - } - // when the playlist is complete, the entire duration is seekable - if (playlist.endList) { - return (0, _videoJs.createTimeRange)(0, duration(playlist)); - } - - // live playlists should not expose three segment durations worth - // of content from the end of the playlist - // https://tools.ietf.org/html/draft-pantos-http-live-streaming-16#section-6.3.3 - start = intervalDuration(playlist, playlist.mediaSequence); - end = intervalDuration(playlist, playlist.mediaSequence + Math.max(0, playlist.segments.length - Playlist.UNSAFE_LIVE_SEGMENTS)); - return (0, _videoJs.createTimeRange)(start, end); -}; - -exports.seekable = seekable; -Playlist.duration = duration; -Playlist.seekable = seekable; - -// exports -exports['default'] = Playlist; -}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{}],12:[function(require,module,exports){ -'use strict'; - -Object.defineProperty(exports, '__esModule', { - value: true -}); - -function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; } - -var _globalDocument = require('global/document'); - -var _globalDocument2 = _interopRequireDefault(_globalDocument); - -/* eslint-disable max-len */ -/** - * Constructs a new URI by interpreting a path relative to another - * URI. - * @param basePath {string} a relative or absolute URI - * @param path {string} a path part to combine with the base - * @return {string} a URI that is equivalent to composing `base` - * with `path` - * @see http://stackoverflow.com/questions/470832/getting-an-absolute-url-from-a-relative-one-ie6-issue - */ -/* eslint-enable max-len */ -var resolveUrl = function resolveUrl(basePath, path) { - // use the base element to get the browser to handle URI resolution - var oldBase = _globalDocument2['default'].querySelector('base'); - var docHead = _globalDocument2['default'].querySelector('head'); - var a = _globalDocument2['default'].createElement('a'); - var base = oldBase; - var oldHref = undefined; - var result = undefined; - - // prep the document - if (oldBase) { - oldHref = oldBase.href; - } else { - base = docHead.appendChild(_globalDocument2['default'].createElement('base')); - } - - base.href = basePath; - a.href = path; - result = a.href; - - // clean up - if (oldBase) { - oldBase.href = oldHref; - } else { - docHead.removeChild(base); - } - return result; -}; - -exports['default'] = resolveUrl; -module.exports = exports['default']; -},{"global/document":16}],13:[function(require,module,exports){ -/** - * A lightweight readable stream implemention that handles event dispatching. - */ -'use strict'; - -Object.defineProperty(exports, '__esModule', { - value: true -}); - -var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })(); - -function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } } - -var Stream = (function () { - function Stream() { - _classCallCheck(this, Stream); - - this.listeners = {}; - } - - /** - * Add a listener for a specified event type. - * @param type {string} the event name - * @param listener {function} the callback to be invoked when an event of - * the specified type occurs - */ - - _createClass(Stream, [{ - key: 'on', - value: 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 type {string} the event name - * @param listener {function} a function previously registered for this - * type of event through `on` - */ - }, { - key: 'off', - value: function off(type, listener) { - var index = undefined; - - if (!this.listeners[type]) { - return false; - } - index = this.listeners[type].indexOf(listener); - 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 type {string} the event name - */ - }, { - key: 'trigger', - value: function trigger(type) { - var callbacks = undefined; - var i = undefined; - var length = undefined; - var args = undefined; - - 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) { - length = callbacks.length; - for (i = 0; i < length; ++i) { - callbacks[i].call(this, arguments[1]); - } - } else { - args = Array.prototype.slice.call(arguments, 1); - length = callbacks.length; - for (i = 0; i < length; ++i) { - callbacks[i].apply(this, args); - } - } - } - - /** - * Destroys the stream and cleans up. - */ - }, { - key: 'dispose', - value: 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 destination {stream} the stream that will receive all `data` events - * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options - */ - }, { - key: 'pipe', - value: function pipe(destination) { - this.on('data', function (data) { - destination.push(data); - }); - } - }]); - - return Stream; -})(); - -exports['default'] = Stream; -module.exports = exports['default']; -},{}],14:[function(require,module,exports){ -(function (global){ -/** - * A wrapper for videojs.xhr that tracks bandwidth. - */ -'use strict'; - -Object.defineProperty(exports, '__esModule', { - value: true -}); - -var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null); - -var xhr = function xhr(options, callback) { - // Add a default timeout for all hls requests - options = (0, _videoJs.mergeOptions)({ - timeout: 45e3 - }, options); - - var request = (0, _videoJs.xhr)(options, function (error, response) { - if (!error && request.response) { - request.responseTime = new Date().getTime(); - request.roundTripTime = request.responseTime - request.requestTime; - request.bytesReceived = request.response.byteLength || request.response.length; - if (!request.bandwidth) { - request.bandwidth = Math.floor(request.bytesReceived / request.roundTripTime * 8 * 1000); - } - } - - // videojs.xhr now uses a specific code - // on the error object to signal that a request has - // timed out errors of setting a boolean on the request object - if (error || request.timedout) { - request.timedout = request.timedout || error.code === 'ETIMEDOUT'; - } else { - request.timedout = false; - } - - // videojs.xhr no longer considers status codes outside of 200 and 0 - // (for file uris) to be errors, but the old XHR did, so emulate that - // behavior. Status 206 may be used in response to byterange requests. - if (!error && response.statusCode !== 200 && response.statusCode !== 206 && response.statusCode !== 0) { - error = new Error('XHR Failed with a response of: ' + (request && (request.response || request.responseText))); - } - - callback(error, request); - }); - - request.requestTime = new Date().getTime(); - return request; -}; - -exports['default'] = xhr; -module.exports = exports['default']; -}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{}],15:[function(require,module,exports){ - -},{}],16:[function(require,module,exports){ -(function (global){ -var topLevel = typeof global !== 'undefined' ? global : - typeof window !== 'undefined' ? window : {} -var minDoc = require('min-document'); - -if (typeof document !== 'undefined') { - module.exports = document; -} else { - var doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4']; - - if (!doccy) { - doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4'] = minDoc; - } - - module.exports = doccy; -} - -}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{"min-document":15}],17:[function(require,module,exports){ -/* - * pkcs7.pad - * https://github.com/brightcove/pkcs7 - * - * Copyright (c) 2014 Brightcove - * Licensed under the apache2 license. - */ - -'use strict'; - -var PADDING; - -/** - * Returns a new Uint8Array that is padded with PKCS#7 padding. - * @param plaintext {Uint8Array} the input bytes before encryption - * @return {Uint8Array} the padded bytes - * @see http://tools.ietf.org/html/rfc5652 - */ -module.exports = function pad(plaintext) { - var padding = PADDING[(plaintext.byteLength % 16) || 0], - result = new Uint8Array(plaintext.byteLength + padding.length); - result.set(plaintext); - result.set(padding, plaintext.byteLength); - return result; -}; - -// pre-define the padding values -PADDING = [ - [16, 16, 16, 16, - 16, 16, 16, 16, - 16, 16, 16, 16, - 16, 16, 16, 16], - - [15, 15, 15, 15, - 15, 15, 15, 15, - 15, 15, 15, 15, - 15, 15, 15], - - [14, 14, 14, 14, - 14, 14, 14, 14, - 14, 14, 14, 14, - 14, 14], - - [13, 13, 13, 13, - 13, 13, 13, 13, - 13, 13, 13, 13, - 13], - - [12, 12, 12, 12, - 12, 12, 12, 12, - 12, 12, 12, 12], - - [11, 11, 11, 11, - 11, 11, 11, 11, - 11, 11, 11], - - [10, 10, 10, 10, - 10, 10, 10, 10, - 10, 10], - - [9, 9, 9, 9, - 9, 9, 9, 9, - 9], - - [8, 8, 8, 8, - 8, 8, 8, 8], - - [7, 7, 7, 7, - 7, 7, 7], - - [6, 6, 6, 6, - 6, 6], - - [5, 5, 5, 5, - 5], - - [4, 4, 4, 4], - - [3, 3, 3], - - [2, 2], - - [1] -]; - -},{}],18:[function(require,module,exports){ -/* - * pkcs7 - * https://github.com/brightcove/pkcs7 - * - * Copyright (c) 2014 Brightcove - * Licensed under the apache2 license. - */ - -'use strict'; - -exports.pad = require('./pad.js'); -exports.unpad = require('./unpad.js'); - -},{"./pad.js":17,"./unpad.js":19}],19:[function(require,module,exports){ -/* - * pkcs7.unpad - * https://github.com/brightcove/pkcs7 - * - * Copyright (c) 2014 Brightcove - * Licensed under the apache2 license. - */ - -'use strict'; - -/** - * Returns the subarray of a Uint8Array without PKCS#7 padding. - * @param padded {Uint8Array} unencrypted bytes that have been padded - * @return {Uint8Array} the unpadded bytes - * @see http://tools.ietf.org/html/rfc5652 - */ -module.exports = function unpad(padded) { - return padded.subarray(0, padded.byteLength - padded[padded.byteLength - 1]); -}; - -},{}],20:[function(require,module,exports){ -(function (global){ -'use strict'; - -Object.defineProperty(exports, '__esModule', { - value: true -}); - -function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; } - -var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null); - -var _videoJs2 = _interopRequireDefault(_videoJs); - -var deprecateOldCue = function deprecateOldCue(cue) { - Object.defineProperties(cue.frame, { - id: { - get: function get() { - _videoJs2['default'].log.warn('cue.frame.id is deprecated. Use cue.value.key instead.'); - return cue.value.key; - } - }, - value: { - get: function get() { - _videoJs2['default'].log.warn('cue.frame.value is deprecated. Use cue.value.data instead.'); - return cue.value.data; - } - }, - privateData: { - get: function get() { - _videoJs2['default'].log.warn('cue.frame.privateData is deprecated. Use cue.value.data instead.'); - return cue.value.data; - } - } - }); -}; - -var addTextTrackData = function addTextTrackData(sourceHandler, captionArray, metadataArray) { - var Cue = window.WebKitDataCue || window.VTTCue; - - if (captionArray) { - captionArray.forEach(function (caption) { - this.inbandTextTrack_.addCue(new Cue(caption.startTime + this.timestampOffset, caption.endTime + this.timestampOffset, caption.text)); - }, sourceHandler); - } - - if (metadataArray) { - metadataArray.forEach(function (metadata) { - var time = metadata.cueTime + this.timestampOffset; - - metadata.frames.forEach(function (frame) { - var cue = new Cue(time, time, frame.value || frame.url || frame.data || ''); - - cue.frame = frame; - cue.value = frame; - deprecateOldCue(cue); - this.metadataTrack_.addCue(cue); - }, this); - }, sourceHandler); - } -}; - -exports['default'] = addTextTrackData; -module.exports = exports['default']; -}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{}],21:[function(require,module,exports){ -'use strict'; - -Object.defineProperty(exports, '__esModule', { - value: true -}); -var createTextTracksIfNecessary = function createTextTracksIfNecessary(sourceBuffer, mediaSource, segment) { - // create an in-band caption track if one is present in the segment - if (segment.captions && segment.captions.length && !sourceBuffer.inbandTextTrack_) { - sourceBuffer.inbandTextTrack_ = mediaSource.player_.addTextTrack('captions', 'cc1'); - } - - if (segment.metadata && segment.metadata.length && !sourceBuffer.metadataTrack_) { - sourceBuffer.metadataTrack_ = mediaSource.player_.addTextTrack('metadata', 'Timed Metadata'); - sourceBuffer.metadataTrack_.inBandMetadataTrackDispatchType = segment.metadata.dispatchType; - } -}; - -exports['default'] = createTextTracksIfNecessary; -module.exports = exports['default']; -},{}],22:[function(require,module,exports){ -/** - * The maximum size in bytes for append operations to the video.js - * SWF. Calling through to Flash blocks and can be expensive so - * tuning this parameter may improve playback on slower - * systems. There are two factors to consider: - * - Each interaction with the SWF must be quick or you risk dropping - * video frames. To maintain 60fps for the rest of the page, each append - * must not take longer than 16ms. Given the likelihood that the page - * will be executing more javascript than just playback, you probably - * want to aim for less than 8ms. We aim for just 4ms. - * - Bigger appends significantly increase throughput. The total number of - * bytes over time delivered to the SWF must exceed the video bitrate or - * playback will stall. - * - * We adaptively tune the size of appends to give the best throughput - * possible given the performance of the system. To do that we try to append - * as much as possible in TIME_PER_TICK and while tuning the size of appends - * dynamically so that we only append about 4-times in that 4ms span. - * - * The reason we try to keep the number of appends around four is due to - * externalities such as Flash load and garbage collection that are highly - * variable and having 4 iterations allows us to exit the loop early if - * an iteration takes longer than expected. - */ - -"use strict"; - -Object.defineProperty(exports, "__esModule", { - value: true -}); -var flashConstants = { - TIME_BETWEEN_TICKS: Math.floor(1000 / 480), - TIME_PER_TICK: Math.floor(1000 / 240), - // 1kb - BYTES_PER_CHUNK: 1 * 1024, - MIN_CHUNK: 1024, - MAX_CHUNK: 1024 * 1024 -}; - -exports["default"] = flashConstants; -module.exports = exports["default"]; -},{}],23:[function(require,module,exports){ -(function (global){ -'use strict'; - -Object.defineProperty(exports, '__esModule', { - value: true -}); - -var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })(); - -var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } }; - -function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; } - -function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } } - -function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } - -var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null); - -var _videoJs2 = _interopRequireDefault(_videoJs); - -var _flashSourceBuffer = require('./flash-source-buffer'); - -var _flashSourceBuffer2 = _interopRequireDefault(_flashSourceBuffer); - -var _flashConstants = require('./flash-constants'); - -var _flashConstants2 = _interopRequireDefault(_flashConstants); - -var FlashMediaSource = (function (_videojs$EventTarget) { - _inherits(FlashMediaSource, _videojs$EventTarget); - - function FlashMediaSource() { - var _this = this; - - _classCallCheck(this, FlashMediaSource); - - _get(Object.getPrototypeOf(FlashMediaSource.prototype), 'constructor', this).call(this); - this.sourceBuffers = []; - this.readyState = 'closed'; - - this.on(['sourceopen', 'webkitsourceopen'], function (event) { - // find the swf where we will push media data - _this.swfObj = document.getElementById(event.swfId); - _this.player_ = (0, _videoJs2['default'])(_this.swfObj.parentNode); - _this.tech_ = _this.swfObj.tech; - _this.readyState = 'open'; - - _this.tech_.on('seeking', function () { - var i = _this.sourceBuffers.length; - - while (i--) { - _this.sourceBuffers[i].abort(); - } - }); - - // trigger load events - if (_this.swfObj) { - _this.swfObj.vjs_load(); - } - }); - } - - /** - * Set or return the presentation duration. - * @param value {double} the duration of the media in seconds - * @param {double} the current presentation duration - * @see http://www.w3.org/TR/media-source/#widl-MediaSource-duration - */ - - _createClass(FlashMediaSource, [{ - key: 'addSeekableRange_', - value: function addSeekableRange_() {} - // intentional no-op - - // create a new source buffer to receive a type of media data - - }, { - key: 'addSourceBuffer', - value: function addSourceBuffer(type) { - var sourceBuffer = undefined; - - // if this is an FLV type, we'll push data to flash - if (type.indexOf('video/mp2t') === 0) { - // Flash source buffers - sourceBuffer = new _flashSourceBuffer2['default'](this); - } else { - throw new Error('NotSupportedError (Video.js)'); - } - - this.sourceBuffers.push(sourceBuffer); - return sourceBuffer; - } - - /* eslint-disable max-len */ - /** - * Signals the end of the stream. - * @param error {string} (optional) Signals that a playback error - * has occurred. If specified, it must be either "network" or - * "decode". - * @see https://w3c.github.io/media-source/#widl-MediaSource-endOfStream-void-EndOfStreamError-error - */ - /* eslint-enable max-len */ - }, { - key: 'endOfStream', - value: function endOfStream(error) { - if (error === 'network') { - // MEDIA_ERR_NETWORK - this.tech_.error(2); - } else if (error === 'decode') { - // MEDIA_ERR_DECODE - this.tech_.error(3); - } - if (this.readyState !== 'ended') { - this.readyState = 'ended'; - this.swfObj.vjs_endOfStream(); - } - } - }]); - - return FlashMediaSource; -})(_videoJs2['default'].EventTarget); - -exports['default'] = FlashMediaSource; -try { - Object.defineProperty(FlashMediaSource.prototype, 'duration', { - get: function get() { - if (!this.swfObj) { - return NaN; - } - // get the current duration from the SWF - return this.swfObj.vjs_getProperty('duration'); - }, - set: function set(value) { - var i = undefined; - var oldDuration = this.swfObj.vjs_getProperty('duration'); - - this.swfObj.vjs_setProperty('duration', value); - - if (value < oldDuration) { - // In MSE, this triggers the range removal algorithm which causes - // an update to occur - for (i = 0; i < this.sourceBuffers.length; i++) { - this.sourceBuffers[i].remove(value, oldDuration); - } - } - - return value; - } - }); -} catch (e) { - // IE8 throws if defineProperty is called on a non-DOM node. We - // don't support IE8 but we shouldn't throw an error if loaded - // there. - FlashMediaSource.prototype.duration = NaN; -} - -for (var property in _flashConstants2['default']) { - FlashMediaSource[property] = _flashConstants2['default'][property]; -} -module.exports = exports['default']; -}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{"./flash-constants":22,"./flash-source-buffer":24}],24:[function(require,module,exports){ -(function (global){ -'use strict'; - -Object.defineProperty(exports, '__esModule', { - value: true -}); - -var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })(); - -var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } }; - -function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; } - -function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } } - -function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } - -var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null); - -var _videoJs2 = _interopRequireDefault(_videoJs); - -var _muxJs = require('mux.js'); - -var _muxJs2 = _interopRequireDefault(_muxJs); - -var _removeCuesFromTrack = require('./remove-cues-from-track'); - -var _removeCuesFromTrack2 = _interopRequireDefault(_removeCuesFromTrack); - -var _createTextTracksIfNecessary = require('./create-text-tracks-if-necessary'); - -var _createTextTracksIfNecessary2 = _interopRequireDefault(_createTextTracksIfNecessary); - -var _addTextTrackData = require('./add-text-track-data'); - -var _addTextTrackData2 = _interopRequireDefault(_addTextTrackData); - -var _flashConstants = require('./flash-constants'); - -var _flashConstants2 = _interopRequireDefault(_flashConstants); - -var scheduleTick = function scheduleTick(func) { - // Chrome doesn't invoke requestAnimationFrame callbacks - // in background tabs, so use setTimeout. - window.setTimeout(func, _flashConstants2['default'].TIME_BETWEEN_TICKS); -}; - -// Source Buffer - -var FlashSourceBuffer = (function (_videojs$EventTarget) { - _inherits(FlashSourceBuffer, _videojs$EventTarget); - - function FlashSourceBuffer(mediaSource) { - var _this = this; - - _classCallCheck(this, FlashSourceBuffer); - - _get(Object.getPrototypeOf(FlashSourceBuffer.prototype), 'constructor', this).call(this); - var encodedHeader = undefined; - - // Start off using the globally defined value but refine - // as we append data into flash - this.chunkSize_ = _flashConstants2['default'].BYTES_PER_CHUNK; - - // byte arrays queued to be appended - this.buffer_ = []; - - // the total number of queued bytes - this.bufferSize_ = 0; - - // to be able to determine the correct position to seek to, we - // need to retain information about the mapping between the - // media timeline and PTS values - this.basePtsOffset_ = NaN; - - this.mediaSource = mediaSource; - - // indicates whether the asynchronous continuation of an operation - // is still being processed - // see https://w3c.github.io/media-source/#widl-SourceBuffer-updating - this.updating = false; - this.timestampOffset_ = 0; - - // TS to FLV transmuxer - this.segmentParser_ = new _muxJs2['default'].flv.Transmuxer(); - this.segmentParser_.on('data', this.receiveBuffer_.bind(this)); - encodedHeader = window.btoa(String.fromCharCode.apply(null, Array.prototype.slice.call(this.segmentParser_.getFlvHeader()))); - this.mediaSource.swfObj.vjs_appendBuffer(encodedHeader); - - Object.defineProperty(this, 'timestampOffset', { - get: function get() { - return this.timestampOffset_; - }, - set: function set(val) { - if (typeof val === 'number' && val >= 0) { - this.timestampOffset_ = val; - this.segmentParser_ = new _muxJs2['default'].flv.Transmuxer(); - this.segmentParser_.on('data', this.receiveBuffer_.bind(this)); - // We have to tell flash to expect a discontinuity - this.mediaSource.swfObj.vjs_discontinuity(); - // the media <-> PTS mapping must be re-established after - // the discontinuity - this.basePtsOffset_ = NaN; - } - } - }); - - Object.defineProperty(this, 'buffered', { - get: function get() { - return _videoJs2['default'].createTimeRanges(this.mediaSource.swfObj.vjs_getProperty('buffered')); - } - }); - - // On a seek we remove all text track data since flash has no concept - // of a buffered-range and everything else is reset on seek - this.mediaSource.player_.on('seeked', function () { - (0, _removeCuesFromTrack2['default'])(0, Infinity, _this.metadataTrack_); - (0, _removeCuesFromTrack2['default'])(0, Infinity, _this.inbandTextTrack_); - }); - } - - // accept video data and pass to the video (swf) object - - _createClass(FlashSourceBuffer, [{ - key: 'appendBuffer', - value: function appendBuffer(bytes) { - var _this2 = this; - - var error = undefined; - var chunk = 512 * 1024; - var i = 0; - - if (this.updating) { - error = new Error('SourceBuffer.append() cannot be called ' + 'while an update is in progress'); - error.name = 'InvalidStateError'; - error.code = 11; - throw error; - } - - this.updating = true; - this.mediaSource.readyState = 'open'; - this.trigger({ type: 'update' }); - - // this is here to use recursion - var chunkInData = function chunkInData() { - _this2.segmentParser_.push(bytes.subarray(i, i + chunk)); - i += chunk; - if (i < bytes.byteLength) { - scheduleTick(chunkInData); - } else { - scheduleTick(_this2.segmentParser_.flush.bind(_this2.segmentParser_)); - } - }; - - chunkInData(); - } - - // reset the parser and remove any data queued to be sent to the swf - }, { - key: 'abort', - value: function abort() { - this.buffer_ = []; - this.bufferSize_ = 0; - this.mediaSource.swfObj.vjs_abort(); - - // report any outstanding updates have ended - if (this.updating) { - this.updating = false; - this.trigger({ type: 'updateend' }); - } - } - - // Flash cannot remove ranges already buffered in the NetStream - // but seeking clears the buffer entirely. For most purposes, - // having this operation act as a no-op is acceptable. - }, { - key: 'remove', - value: function remove(start, end) { - (0, _removeCuesFromTrack2['default'])(start, end, this.metadataTrack_); - (0, _removeCuesFromTrack2['default'])(start, end, this.inbandTextTrack_); - this.trigger({ type: 'update' }); - this.trigger({ type: 'updateend' }); - } - }, { - key: 'receiveBuffer_', - value: function receiveBuffer_(segment) { - var _this3 = this; - - // create an in-band caption track if one is present in the segment - (0, _createTextTracksIfNecessary2['default'])(this, this.mediaSource, segment); - (0, _addTextTrackData2['default'])(this, segment.captions, segment.metadata); - - // Do this asynchronously since convertTagsToData_ can be time consuming - scheduleTick(function () { - var flvBytes = _this3.convertTagsToData_(segment); - - if (_this3.buffer_.length === 0) { - scheduleTick(_this3.processBuffer_.bind(_this3)); - } - - if (flvBytes) { - _this3.buffer_.push(flvBytes); - _this3.bufferSize_ += flvBytes.byteLength; - } - }); - } - - // append a portion of the current buffer to the SWF - }, { - key: 'processBuffer_', - value: function processBuffer_() { - var chunk = undefined; - var i = undefined; - var length = undefined; - var binary = undefined; - var b64str = undefined; - var startByte = 0; - var appendIterations = 0; - var startTime = +new Date(); - var appendTime = undefined; - - if (!this.buffer_.length) { - if (this.updating !== false) { - this.updating = false; - this.trigger({ type: 'updateend' }); - } - // do nothing if the buffer is empty - return; - } - - do { - appendIterations++; - // concatenate appends up to the max append size - chunk = this.buffer_[0].subarray(startByte, startByte + this.chunkSize_); - - // requeue any bytes that won't make it this round - if (chunk.byteLength < this.chunkSize_ || this.buffer_[0].byteLength === startByte + this.chunkSize_) { - startByte = 0; - this.buffer_.shift(); - } else { - startByte += this.chunkSize_; - } - - this.bufferSize_ -= chunk.byteLength; - - // base64 encode the bytes - binary = ''; - length = chunk.byteLength; - for (i = 0; i < length; i++) { - binary += String.fromCharCode(chunk[i]); - } - b64str = window.btoa(binary); - - // bypass normal ExternalInterface calls and pass xml directly - // IE can be slow by default - this.mediaSource.swfObj.CallFunction('<invoke name="vjs_appendBuffer"' + 'returntype="javascript"><arguments><string>' + b64str + '</string></arguments></invoke>'); - appendTime = new Date() - startTime; - } while (this.buffer_.length && appendTime < _flashConstants2['default'].TIME_PER_TICK); - - if (this.buffer_.length && startByte) { - this.buffer_[0] = this.buffer_[0].subarray(startByte); - } - - if (appendTime >= _flashConstants2['default'].TIME_PER_TICK) { - // We want to target 4 iterations per time-slot so that gives us - // room to adjust to changes in Flash load and other externalities - // such as garbage collection while still maximizing throughput - this.chunkSize_ = Math.floor(this.chunkSize_ * (appendIterations / 4)); - } - - // We also make sure that the chunk-size doesn't drop below 1KB or - // go above 1MB as a sanity check - this.chunkSize_ = Math.max(_flashConstants2['default'].MIN_CHUNK, Math.min(this.chunkSize_, _flashConstants2['default'].MAX_CHUNK)); - - // schedule another append if necessary - if (this.bufferSize_ !== 0) { - scheduleTick(this.processBuffer_.bind(this)); - } else { - this.updating = false; - this.trigger({ type: 'updateend' }); - } - } - - // Turns an array of flv tags into a Uint8Array representing the - // flv data. Also removes any tags that are before the current - // time so that playback begins at or slightly after the right - // place on a seek - }, { - key: 'convertTagsToData_', - value: function convertTagsToData_(segmentData) { - var segmentByteLength = 0; - var tech = this.mediaSource.tech_; - var targetPts = 0; - var i = undefined; - var j = undefined; - var segment = undefined; - var filteredTags = []; - var tags = this.getOrderedTags_(segmentData); - - // Establish the media timeline to PTS translation if we don't - // have one already - if (isNaN(this.basePtsOffset_) && tags.length) { - this.basePtsOffset_ = tags[0].pts; - } - - // Trim any tags that are before the end of the end of - // the current buffer - if (tech.buffered().length) { - targetPts = tech.buffered().end(0) - this.timestampOffset; - } - // Trim to currentTime if it's ahead of buffered or buffered doesn't exist - targetPts = Math.max(targetPts, tech.currentTime() - this.timestampOffset); - - // PTS values are represented in milliseconds - targetPts *= 1e3; - targetPts += this.basePtsOffset_; - - // skip tags with a presentation time less than the seek target - for (i = 0; i < tags.length; i++) { - if (tags[i].pts >= targetPts) { - filteredTags.push(tags[i]); - } - } - - if (filteredTags.length === 0) { - return; - } - - // concatenate the bytes into a single segment - for (i = 0; i < filteredTags.length; i++) { - segmentByteLength += filteredTags[i].bytes.byteLength; - } - segment = new Uint8Array(segmentByteLength); - for (i = 0, j = 0; i < filteredTags.length; i++) { - segment.set(filteredTags[i].bytes, j); - j += filteredTags[i].bytes.byteLength; - } - - return segment; - } - - // assemble the FLV tags in decoder order - }, { - key: 'getOrderedTags_', - value: function getOrderedTags_(segmentData) { - var videoTags = segmentData.tags.videoTags; - var audioTags = segmentData.tags.audioTags; - var tag = undefined; - var tags = []; - - while (videoTags.length || audioTags.length) { - if (!videoTags.length) { - // only audio tags remain - tag = audioTags.shift(); - } else if (!audioTags.length) { - // only video tags remain - tag = videoTags.shift(); - } else if (audioTags[0].dts < videoTags[0].dts) { - // audio should be decoded next - tag = audioTags.shift(); - } else { - // video should be decoded next - tag = videoTags.shift(); - } - - tags.push(tag.finalize()); - } - - return tags; - } - }]); - - return FlashSourceBuffer; -})(_videoJs2['default'].EventTarget); - -exports['default'] = FlashSourceBuffer; -module.exports = exports['default']; -}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{"./add-text-track-data":20,"./create-text-tracks-if-necessary":21,"./flash-constants":22,"./remove-cues-from-track":26,"mux.js":37}],25:[function(require,module,exports){ -(function (global){ -'use strict'; - -Object.defineProperty(exports, '__esModule', { - value: true -}); - -var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })(); - -var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } }; - -function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; } - -function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } } - -function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } - -var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null); - -var _videoJs2 = _interopRequireDefault(_videoJs); - -var _virtualSourceBuffer = require('./virtual-source-buffer'); - -var _virtualSourceBuffer2 = _interopRequireDefault(_virtualSourceBuffer); - -// Replace the old apple-style `avc1.<dd>.<dd>` codec string with the standard -// `avc1.<hhhhhh>` -var translateLegacyCodecs = function translateLegacyCodecs(codecs) { - return codecs.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; - }); -}; - -var HtmlMediaSource = (function (_videojs$EventTarget) { - _inherits(HtmlMediaSource, _videojs$EventTarget); - - function HtmlMediaSource() { - _classCallCheck(this, HtmlMediaSource); - - _get(Object.getPrototypeOf(HtmlMediaSource.prototype), 'constructor', this).call(this, _videoJs2['default'].EventTarget); - /* eslint-disable consistent-this */ - var self = this; - /* eslint-enable consistent-this */ - var property = undefined; - - this.mediaSource_ = new window.MediaSource(); - // delegate to the native MediaSource's methods by default - for (property in this.mediaSource_) { - if (!(property in HtmlMediaSource.prototype) && typeof this.mediaSource_[property] === 'function') { - this[property] = this.mediaSource_[property].bind(this.mediaSource_); - } - } - - // emulate `duration` and `seekable` until seeking can be - // handled uniformly for live streams - // see https://github.com/w3c/media-source/issues/5 - this.duration_ = NaN; - Object.defineProperty(this, 'duration', { - get: function get() { - if (self.duration_ === Infinity) { - return self.duration_; - } - return self.mediaSource_.duration; - }, - set: function set(duration) { - self.duration_ = duration; - if (duration !== Infinity) { - self.mediaSource_.duration = duration; - return; - } - } - }); - Object.defineProperty(this, 'seekable', { - get: function get() { - if (this.duration_ === Infinity) { - return _videoJs2['default'].createTimeRanges([[0, self.mediaSource_.duration]]); - } - return self.mediaSource_.seekable; - } - }); - - Object.defineProperty(this, 'readyState', { - get: function get() { - return self.mediaSource_.readyState; - } - }); - - // the list of virtual and native SourceBuffers created by this - // MediaSource - this.sourceBuffers = []; - - // Re-emit MediaSource events on the polyfill - ['sourceopen', 'sourceclose', 'sourceended'].forEach(function (eventName) { - this.mediaSource_.addEventListener(eventName, this.trigger.bind(this)); - }, this); - - // capture the associated player when the MediaSource is - // successfully attached - this.on('sourceopen', function (event) { - var video = document.querySelector('[src="' + self.url_ + '"]'); - - if (!video) { - return; - } - - self.player_ = (0, _videoJs2['default'])(video.parentNode); - }); - - // explicitly terminate any WebWorkers that were created - // by SourceHandlers - this.on('sourceclose', function (event) { - this.sourceBuffers.forEach(function (sourceBuffer) { - if (sourceBuffer.transmuxer_) { - sourceBuffer.transmuxer_.terminate(); - } - }); - - this.sourceBuffers.length = 0; - }); - } - - _createClass(HtmlMediaSource, [{ - key: 'addSeekableRange_', - value: function addSeekableRange_(start, end) { - var error = undefined; - - if (this.duration !== Infinity) { - error = new Error('MediaSource.addSeekableRange() can only be invoked ' + 'when the duration is Infinity'); - error.name = 'InvalidStateError'; - error.code = 11; - throw error; - } - - if (end > this.mediaSource_.duration || isNaN(this.mediaSource_.duration)) { - this.mediaSource_.duration = end; - } - } - }, { - key: 'addSourceBuffer', - value: function addSourceBuffer(type) { - var buffer = undefined; - var codecs = undefined; - var avcCodec = undefined; - var mp4aCodec = undefined; - var avcRegEx = /avc1\.[\da-f]+/i; - var mp4aRegEx = /mp4a\.\d+.\d+/i; - - // create a virtual source buffer to transmux MPEG-2 transport - // stream segments into fragmented MP4s - if (/^video\/mp2t/i.test(type)) { - codecs = type.split(';').slice(1).join(';'); - codecs = translateLegacyCodecs(codecs); - - // Pull out each individual codec string if it exists - avcCodec = (codecs.match(avcRegEx) || [])[0]; - mp4aCodec = (codecs.match(mp4aRegEx) || [])[0]; - - // If a codec is unspecified, use the defaults - if (!avcCodec || !avcCodec.length) { - avcCodec = 'avc1.4d400d'; - } - if (!mp4aCodec || !mp4aCodec.length) { - mp4aCodec = 'mp4a.40.2'; - } - - buffer = new _virtualSourceBuffer2['default'](this, [avcCodec, mp4aCodec]); - this.sourceBuffers.push(buffer); - return buffer; - } - - // delegate to the native implementation - buffer = this.mediaSource_.addSourceBuffer(type); - this.sourceBuffers.push(buffer); - return buffer; - } - }]); - - return HtmlMediaSource; -})(_videoJs2['default'].EventTarget); - -exports['default'] = HtmlMediaSource; -module.exports = exports['default']; -}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{"./virtual-source-buffer":29}],26:[function(require,module,exports){ -"use strict"; - -Object.defineProperty(exports, "__esModule", { - value: true -}); -var removeCuesFromTrack = function removeCuesFromTrack(start, end, track) { - var i = undefined; - var cue = undefined; - - if (!track) { - return; - } - - i = track.cues.length; - - while (i--) { - cue = track.cues[i]; - - // Remove any overlapping cue - if (cue.startTime <= end && cue.endTime >= start) { - track.removeCue(cue); - } - } -}; - -exports["default"] = removeCuesFromTrack; -module.exports = exports["default"]; -},{}],27:[function(require,module,exports){ -/** - * videojs-contrib-media-sources - * - * Copyright (c) 2015 Brightcove - * All rights reserved. - * - * Handles communication between the browser-world and the mux.js - * transmuxer running inside of a WebWorker by exposing a simple - * message-based interface to a Transmuxer object. - */ -'use strict'; - -Object.defineProperty(exports, '__esModule', { - value: true -}); - -function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; } - -var _muxJs = require('mux.js'); - -var _muxJs2 = _interopRequireDefault(_muxJs); - -var globalTransmuxer = undefined; -var initOptions = {}; - -/** - * wireTransmuxerEvents - * Re-emits tranmsuxer events by converting them into messages to the - * world outside the worker - */ -var wireTransmuxerEvents = function wireTransmuxerEvents(transmuxer) { - transmuxer.on('data', function (segment) { - // transfer ownership of the underlying ArrayBuffer - // instead of doing a copy to save memory - // ArrayBuffers are transferable but generic TypedArrays are not - /* eslint-disable max-len */ - // see https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Using_web_workers#Passing_data_by_transferring_ownership_(transferable_objects) - /* eslint-enable max-len */ - var typedArray = segment.data; - - segment.data = typedArray.buffer; - postMessage({ - action: 'data', - segment: segment, - byteOffset: typedArray.byteOffset, - byteLength: typedArray.byteLength - }, [segment.data]); - }); - - if (transmuxer.captionStream) { - transmuxer.captionStream.on('data', function (caption) { - postMessage({ - action: 'caption', - data: caption - }); - }); - } - - transmuxer.on('done', function (data) { - postMessage({ action: 'done' }); - }); -}; - -/** - * All incoming messages route through this hash. If no function exists - * to handle an incoming message, then we ignore the message. - */ -var messageHandlers = { - /** - * init - * Allows you to initialize the transmuxer and pass along options from - * outside the worker - */ - init: function init(data) { - initOptions = data && data.options || {}; - this.defaultInit(); - }, - /** - * defaultInit - * Is called before every function and initializes the transmuxer with - * default options if `init` was never explicitly called - */ - defaultInit: function defaultInit() { - if (globalTransmuxer) { - globalTransmuxer.dispose(); - } - globalTransmuxer = new _muxJs2['default'].mp4.Transmuxer(initOptions); - wireTransmuxerEvents(globalTransmuxer); - }, - /** - * push - * Adds data (a ts segment) to the start of the transmuxer pipeline for - * processing - */ - push: function push(data) { - // Cast array buffer to correct type for transmuxer - var segment = new Uint8Array(data.data, data.byteOffset, data.byteLength); - - globalTransmuxer.push(segment); - }, - /** - * reset - * Recreate the transmuxer so that the next segment added via `push` - * start with a fresh transmuxer - */ - reset: function reset() { - this.defaultInit(); - }, - /** - * setTimestampOffset - * Set the value that will be used as the `baseMediaDecodeTime` time for the - * next segment pushed in. Subsequent segments will have their `baseMediaDecodeTime` - * set relative to the first based on the PTS values. - */ - setTimestampOffset: function setTimestampOffset(data) { - var timestampOffset = data.timestampOffset || 0; - - globalTransmuxer.setBaseMediaDecodeTime(Math.round(timestampOffset * 90000)); - }, - /** - * flush - * Forces the pipeline to finish processing the last segment and emit it's - * results - */ - flush: function flush(data) { - globalTransmuxer.flush(); - } -}; - -var Worker = function Worker(self) { - self.onmessage = function (event) { - // Setup the default transmuxer if one doesn't exist yet and we are invoked with - // an action other than `init` - if (!globalTransmuxer && event.data.action !== 'init') { - messageHandlers.defaultInit(); - } - - if (event.data && event.data.action) { - if (messageHandlers[event.data.action]) { - messageHandlers[event.data.action](event.data); - } - } - }; -}; - -exports['default'] = Worker; -module.exports = exports['default']; -},{"mux.js":37}],28:[function(require,module,exports){ -'use strict'; - -Object.defineProperty(exports, '__esModule', { - value: true -}); - -function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; } - -var _flashMediaSource = require('./flash-media-source'); - -var _flashMediaSource2 = _interopRequireDefault(_flashMediaSource); - -var _htmlMediaSource = require('./html-media-source'); - -var _htmlMediaSource2 = _interopRequireDefault(_htmlMediaSource); - -// import videojs from 'video.js'; -var videojs = window.videojs; -var urlCount = 0; - -// ------------ -// Media Source -// ------------ - -var defaults = { - // how to determine the MediaSource implementation to use. There - // are three available modes: - // - auto: use native MediaSources where available and Flash - // everywhere else - // - html5: always use native MediaSources - // - flash: always use the Flash MediaSource polyfill - mode: 'auto' -}; - -// store references to the media sources so they can be connected -// to a video element (a swf object) -videojs.mediaSources = {}; - -// provide a method for a swf object to notify JS that a media source is now open -var open = function open(msObjectURL, swfId) { - var mediaSource = videojs.mediaSources[msObjectURL]; - - if (mediaSource) { - mediaSource.trigger({ type: 'sourceopen', swfId: swfId }); - } else { - throw new Error('Media Source not found (Video.js)'); - } -}; - -// Check to see if the native MediaSource object exists and supports -// an MP4 container with both H.264 video and AAC-LC audio -var supportsNativeMediaSources = function supportsNativeMediaSources() { - return !!window.MediaSource && window.MediaSource.isTypeSupported('video/mp4;codecs="avc1.4d400d,mp4a.40.2"'); -}; - -var MediaSource = function MediaSource(options) { - var settings = videojs.mergeOptions(defaults, options); - - this.MediaSource = { - open: open, - supportsNativeMediaSources: supportsNativeMediaSources - }; - - // determine whether HTML MediaSources should be used - if (settings.mode === 'html5' || settings.mode === 'auto' && supportsNativeMediaSources()) { - return new _htmlMediaSource2['default'](); - } - - // otherwise, emulate them through the SWF - return new _flashMediaSource2['default'](); -}; - -exports.MediaSource = MediaSource; -MediaSource.open = open; -MediaSource.supportsNativeMediaSources = supportsNativeMediaSources; - -var URL = { - createObjectURL: function createObjectURL(object) { - var objectUrlPrefix = 'blob:vjs-media-source/'; - var url = undefined; - - // use the native MediaSource to generate an object URL - if (object instanceof _htmlMediaSource2['default']) { - url = window.URL.createObjectURL(object.mediaSource_); - object.url_ = url; - return url; - } - // if the object isn't an emulated MediaSource, delegate to the - // native implementation - if (!(object instanceof _flashMediaSource2['default'])) { - url = window.URL.createObjectURL(object); - object.url_ = url; - return url; - } - - // build a URL that can be used to map back to the emulated - // MediaSource - url = objectUrlPrefix + urlCount; - - urlCount++; - - // setup the mapping back to object - videojs.mediaSources[url] = object; - - return url; - } -}; - -exports.URL = URL; -videojs.MediaSource = MediaSource; -videojs.URL = URL; -},{"./flash-media-source":23,"./html-media-source":25}],29:[function(require,module,exports){ -(function (global){ -'use strict'; - -Object.defineProperty(exports, '__esModule', { - value: true -}); - -var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })(); - -var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } }; - -function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; } - -function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } } - -function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } - -var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null); - -var _videoJs2 = _interopRequireDefault(_videoJs); - -var _createTextTracksIfNecessary = require('./create-text-tracks-if-necessary'); - -var _createTextTracksIfNecessary2 = _interopRequireDefault(_createTextTracksIfNecessary); - -var _removeCuesFromTrack = require('./remove-cues-from-track'); - -var _removeCuesFromTrack2 = _interopRequireDefault(_removeCuesFromTrack); - -var _addTextTrackData = require('./add-text-track-data'); - -var _addTextTrackData2 = _interopRequireDefault(_addTextTrackData); - -var _webworkify = require('webworkify'); - -var _webworkify2 = _interopRequireDefault(_webworkify); - -var _transmuxerWorker = require('./transmuxer-worker'); - -var _transmuxerWorker2 = _interopRequireDefault(_transmuxerWorker); - -var aggregateUpdateHandler = function aggregateUpdateHandler(mediaSource, guardBufferName, type) { - return function () { - if (!mediaSource[guardBufferName] || !mediaSource[guardBufferName].updating) { - return mediaSource.trigger(type); - } - }; -}; - -var VirtualSourceBuffer = (function (_videojs$EventTarget) { - _inherits(VirtualSourceBuffer, _videojs$EventTarget); - - function VirtualSourceBuffer(mediaSource, codecs) { - var _this = this; - - _classCallCheck(this, VirtualSourceBuffer); - - _get(Object.getPrototypeOf(VirtualSourceBuffer.prototype), 'constructor', this).call(this, _videoJs2['default'].EventTarget); - this.timestampOffset_ = 0; - this.pendingBuffers_ = []; - this.bufferUpdating_ = false; - this.mediaSource_ = mediaSource; - this.codecs_ = codecs; - - // append muxed segments to their respective native buffers as - // soon as they are available - this.transmuxer_ = (0, _webworkify2['default'])(_transmuxerWorker2['default']); - this.transmuxer_.postMessage({ action: 'init', options: { remux: false } }); - - this.transmuxer_.onmessage = function (event) { - if (event.data.action === 'data') { - return _this.data_(event); - } - - if (event.data.action === 'done') { - return _this.done_(event); - } - }; - - // this timestampOffset is a property with the side-effect of resetting - // baseMediaDecodeTime in the transmuxer on the setter - Object.defineProperty(this, 'timestampOffset', { - get: function get() { - return this.timestampOffset_; - }, - set: function set(val) { - if (typeof val === 'number' && val >= 0) { - this.timestampOffset_ = val; - - // We have to tell the transmuxer to set the baseMediaDecodeTime to - // the desired timestampOffset for the next segment - this.transmuxer_.postMessage({ - action: 'setTimestampOffset', - timestampOffset: val - }); - } - } - }); - // setting the append window affects both source buffers - Object.defineProperty(this, 'appendWindowStart', { - get: function get() { - return (this.videoBuffer_ || this.audioBuffer_).appendWindowStart; - }, - set: function set(start) { - if (this.videoBuffer_) { - this.videoBuffer_.appendWindowStart = start; - } - if (this.audioBuffer_) { - this.audioBuffer_.appendWindowStart = start; - } - } - }); - // this buffer is "updating" if either of its native buffers are - Object.defineProperty(this, 'updating', { - get: function get() { - return this.bufferUpdating_ || this.audioBuffer_ && this.audioBuffer_.updating || this.videoBuffer_ && this.videoBuffer_.updating; - } - }); - // the buffered property is the intersection of the buffered - // ranges of the native source buffers - Object.defineProperty(this, 'buffered', { - get: function get() { - var start = null; - var end = null; - var arity = 0; - var extents = []; - var ranges = []; - - // Handle the case where there is no buffer data - if ((!this.videoBuffer_ || this.videoBuffer_.buffered.length === 0) && (!this.audioBuffer_ || this.audioBuffer_.buffered.length === 0)) { - return _videoJs2['default'].createTimeRange(); - } - - // Handle the case where we only have one buffer - if (!this.videoBuffer_) { - return this.audioBuffer_.buffered; - } else if (!this.audioBuffer_) { - return this.videoBuffer_.buffered; - } - - // Handle the case where we have both buffers and create an - // intersection of the two - var videoBuffered = this.videoBuffer_.buffered; - var audioBuffered = this.audioBuffer_.buffered; - var count = videoBuffered.length; - - // A) Gather up all start and end times - while (count--) { - extents.push({ time: videoBuffered.start(count), type: 'start' }); - extents.push({ time: videoBuffered.end(count), type: 'end' }); - } - count = audioBuffered.length; - while (count--) { - extents.push({ time: audioBuffered.start(count), type: 'start' }); - extents.push({ time: audioBuffered.end(count), type: 'end' }); - } - // B) Sort them by time - extents.sort(function (a, b) { - return a.time - b.time; - }); - - // C) Go along one by one incrementing arity for start and decrementing - // arity for ends - for (count = 0; count < extents.length; count++) { - if (extents[count].type === 'start') { - arity++; - - // D) If arity is ever incremented to 2 we are entering an - // overlapping range - if (arity === 2) { - start = extents[count].time; - } - } else if (extents[count].type === 'end') { - arity--; - - // E) If arity is ever decremented to 1 we leaving an - // overlapping range - if (arity === 1) { - end = extents[count].time; - } - } - - // F) Record overlapping ranges - if (start !== null && end !== null) { - ranges.push([start, end]); - start = null; - end = null; - } - } - - return _videoJs2['default'].createTimeRanges(ranges); - } - }); - } - - // Transmuxer message handlers - - _createClass(VirtualSourceBuffer, [{ - key: 'data_', - value: function data_(event) { - var segment = event.data.segment; - var nativeMediaSource = this.mediaSource_.mediaSource_; - - // Cast ArrayBuffer to TypedArray - segment.data = new Uint8Array(segment.data, event.data.byteOffset, event.data.byteLength); - - // If any sourceBuffers have not been created, do so now - if (segment.type === 'video') { - if (!this.videoBuffer_) { - this.videoBuffer_ = nativeMediaSource.addSourceBuffer('video/mp4;codecs="' + this.codecs_[0] + '"'); - // aggregate buffer events - this.videoBuffer_.addEventListener('updatestart', aggregateUpdateHandler(this, 'audioBuffer_', 'updatestart')); - this.videoBuffer_.addEventListener('update', aggregateUpdateHandler(this, 'audioBuffer_', 'update')); - this.videoBuffer_.addEventListener('updateend', aggregateUpdateHandler(this, 'audioBuffer_', 'updateend')); - } - } else if (segment.type === 'audio') { - if (!this.audioBuffer_) { - this.audioBuffer_ = nativeMediaSource.addSourceBuffer('audio/mp4;codecs="' + this.codecs_[1] + '"'); - // aggregate buffer events - this.audioBuffer_.addEventListener('updatestart', aggregateUpdateHandler(this, 'videoBuffer_', 'updatestart')); - this.audioBuffer_.addEventListener('update', aggregateUpdateHandler(this, 'videoBuffer_', 'update')); - this.audioBuffer_.addEventListener('updateend', aggregateUpdateHandler(this, 'videoBuffer_', 'updateend')); - } - } else if (segment.type === 'combined') { - if (!this.videoBuffer_) { - this.videoBuffer_ = nativeMediaSource.addSourceBuffer('video/mp4;codecs="' + this.codecs_.join(',') + '"'); - // aggregate buffer events - this.videoBuffer_.addEventListener('updatestart', aggregateUpdateHandler(this, 'videoBuffer_', 'updatestart')); - this.videoBuffer_.addEventListener('update', aggregateUpdateHandler(this, 'videoBuffer_', 'update')); - this.videoBuffer_.addEventListener('updateend', aggregateUpdateHandler(this, 'videoBuffer_', 'updateend')); - } - } - (0, _createTextTracksIfNecessary2['default'])(this, this.mediaSource_, segment); - - // Add the segments to the pendingBuffers array - this.pendingBuffers_.push(segment); - return; - } - }, { - key: 'done_', - value: function done_() { - // All buffers should have been flushed from the muxer - // start processing anything we have received - this.processPendingSegments_(); - return; - } - - // SourceBuffer Implementation - - }, { - key: 'appendBuffer', - value: function appendBuffer(segment) { - // Start the internal "updating" state - this.bufferUpdating_ = true; - - this.transmuxer_.postMessage({ - action: 'push', - // Send the typed-array of data as an ArrayBuffer so that - // it can be sent as a "Transferable" and avoid the costly - // memory copy - data: segment.buffer, - - // To recreate the original typed-array, we need information - // about what portion of the ArrayBuffer it was a view into - byteOffset: segment.byteOffset, - byteLength: segment.byteLength - }, [segment.buffer]); - this.transmuxer_.postMessage({ action: 'flush' }); - } - }, { - key: 'remove', - value: function remove(start, end) { - if (this.videoBuffer_) { - this.videoBuffer_.remove(start, end); - } - if (this.audioBuffer_) { - this.audioBuffer_.remove(start, end); - } - - // Remove Metadata Cues (id3) - (0, _removeCuesFromTrack2['default'])(start, end, this.metadataTrack_); - - // Remove Any Captions - (0, _removeCuesFromTrack2['default'])(start, end, this.inbandTextTrack_); - } - - /** - * Process any segments that the muxer has output - * Concatenate segments together based on type and append them into - * their respective sourceBuffers - */ - }, { - key: 'processPendingSegments_', - value: function processPendingSegments_() { - var sortedSegments = { - video: { - segments: [], - bytes: 0 - }, - audio: { - segments: [], - bytes: 0 - }, - captions: [], - metadata: [] - }; - - // Sort segments into separate video/audio arrays and - // keep track of their total byte lengths - sortedSegments = this.pendingBuffers_.reduce(function (segmentObj, segment) { - var type = segment.type; - var data = segment.data; - - // A "combined" segment type (unified video/audio) uses the videoBuffer - if (type === 'combined') { - type = 'video'; - } - - segmentObj[type].segments.push(data); - segmentObj[type].bytes += data.byteLength; - - // Gather any captions into a single array - if (segment.captions) { - segmentObj.captions = segmentObj.captions.concat(segment.captions); - } - - // Gather any metadata into a single array - if (segment.metadata) { - segmentObj.metadata = segmentObj.metadata.concat(segment.metadata); - } - - return segmentObj; - }, sortedSegments); - - (0, _addTextTrackData2['default'])(this, sortedSegments.captions, sortedSegments.metadata); - - // Merge multiple video and audio segments into one and append - this.concatAndAppendSegments_(sortedSegments.video, this.videoBuffer_); - this.concatAndAppendSegments_(sortedSegments.audio, this.audioBuffer_); - - this.pendingBuffers_.length = 0; - - // We are no longer in the internal "updating" state - this.bufferUpdating_ = false; - } - - /** - * Combind all segments into a single Uint8Array and then append them - * to the destination buffer - */ - }, { - key: 'concatAndAppendSegments_', - value: function concatAndAppendSegments_(segmentObj, destinationBuffer) { - var offset = 0; - var tempBuffer = undefined; - - if (segmentObj.bytes) { - tempBuffer = new Uint8Array(segmentObj.bytes); - - // Combine the individual segments into one large typed-array - segmentObj.segments.forEach(function (segment) { - tempBuffer.set(segment, offset); - offset += segment.byteLength; - }); - - destinationBuffer.appendBuffer(tempBuffer); - } - } - - // abort any sourceBuffer actions and throw out any un-appended data - }, { - key: 'abort', - value: function abort() { - if (this.videoBuffer_) { - this.videoBuffer_.abort(); - } - if (this.audioBuffer_) { - this.audioBuffer_.abort(); - } - if (this.transmuxer_) { - this.transmuxer_.postMessage({ action: 'reset' }); - } - this.pendingBuffers_.length = 0; - this.bufferUpdating_ = false; - } - }]); - - return VirtualSourceBuffer; -})(_videoJs2['default'].EventTarget); - -exports['default'] = VirtualSourceBuffer; -module.exports = exports['default']; -}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{"./add-text-track-data":20,"./create-text-tracks-if-necessary":21,"./remove-cues-from-track":26,"./transmuxer-worker":27,"webworkify":50}],30:[function(require,module,exports){ -/** - * mux.js - * - * Copyright (c) 2016 Brightcove - * All rights reserved. - * - * A stream-based aac to mp4 converter. This utility can be used to - * deliver mp4s to a SourceBuffer on platforms that support native - * Media Source Extensions. - */ -'use strict'; -var Stream = require('../utils/stream.js'); - -// Constants -var AacStream; - -/** - * Splits an incoming stream of binary data into ADTS and ID3 Frames. - */ - -AacStream = function() { - var - everything, - receivedTimeStamp = false, - timeStamp = 0; - - AacStream.prototype.init.call(this); - - this.setTimestamp = function (timestamp) { - timeStamp = timestamp; - }; - - this.parseId3TagSize = function(header, byteIndex) { - var - returnSize = (header[byteIndex + 6] << 21) | - (header[byteIndex + 7] << 14) | - (header[byteIndex + 8] << 7) | - (header[byteIndex + 9]), - flags = header[byteIndex + 5], - footerPresent = (flags & 16) >> 4; - - if (footerPresent) { - return returnSize + 20; - } - return returnSize + 10; - }; - - this.parseAdtsSize = function(header, byteIndex) { - var - lowThree = (header[byteIndex + 5] & 0xE0) >> 5, - middle = header[byteIndex + 4] << 3, - highTwo = header[byteIndex + 3] & 0x3 << 11; - - return (highTwo | middle) | lowThree; - }; - - this.push = function(bytes) { - var - frameSize = 0, - byteIndex = 0, - chunk, - packet, - tempLength; - - // If there are bytes remaining from the last segment, prepend them to the - // bytes that were pushed in - if (everything !== undefined && everything.length) { - tempLength = everything.length; - everything = new Uint8Array(bytes.byteLength + tempLength); - everything.set(everything.subarray(0, tempLength)); - everything.set(bytes, tempLength); - } else { - everything = bytes; - } - - while (everything.length - byteIndex >= 10) { - if ((everything[byteIndex] === 'I'.charCodeAt(0)) && - (everything[byteIndex + 1] === 'D'.charCodeAt(0)) && - (everything[byteIndex + 2] === '3'.charCodeAt(0))) { - - //check framesize - frameSize = this.parseId3TagSize(everything, byteIndex); - //we have enough in the buffer to emit a full packet - if (frameSize > everything.length) { - break; - } - chunk = { - type: 'timed-metadata', - data: everything.subarray(byteIndex, byteIndex + frameSize) - }; - this.trigger('data', chunk); - byteIndex += frameSize; - continue; - } else if ((everything[byteIndex] & 0xff === 0xff) && - ((everything[byteIndex + 1] & 0xf0) === 0xf0)) { - frameSize = this.parseAdtsSize(everything, byteIndex); - - if (frameSize > everything.length) { - break; - } - packet = { - type: 'audio', - data: everything.subarray(byteIndex, byteIndex + frameSize), - pts: timeStamp, - dts: timeStamp, - }; - this.trigger('data', packet); - byteIndex += frameSize; - continue; - } - byteIndex++; - } - }; -}; - -AacStream.prototype = new Stream(); - - - -module.exports = AacStream; - -},{"../utils/stream.js":49}],31:[function(require,module,exports){ -'use strict'; - -var Stream = require('../utils/stream.js'); - -var AdtsStream; - -var - ADTS_SAMPLING_FREQUENCIES = [ - 96000, - 88200, - 64000, - 48000, - 44100, - 32000, - 24000, - 22050, - 16000, - 12000, - 11025, - 8000, - 7350 - ]; - -/* - * Accepts a ElementaryStream and emits data events with parsed - * AAC Audio Frames of the individual packets. Input audio in ADTS - * format is unpacked and re-emitted as AAC frames. - * - * @see http://wiki.multimedia.cx/index.php?title=ADTS - * @see http://wiki.multimedia.cx/?title=Understanding_AAC - */ -AdtsStream = function() { - var self, buffer; - - AdtsStream.prototype.init.call(this); - - self = this; - - this.push = function(packet) { - var - i = 0, - frameNum = 0, - frameLength, - protectionSkipBytes, - frameEnd, - oldBuffer, - numFrames, - sampleCount, - adtsFrameDuration; - - if (packet.type !== 'audio') { - // ignore non-audio data - return; - } - - // Prepend any data in the buffer to the input data so that we can parse - // aac frames the cross a PES packet boundary - if (buffer) { - oldBuffer = buffer; - buffer = new Uint8Array(oldBuffer.byteLength + packet.data.byteLength); - buffer.set(oldBuffer); - buffer.set(packet.data, oldBuffer.byteLength); - } else { - buffer = packet.data; - } - - // unpack any ADTS frames which have been fully received - // for details on the ADTS header, see http://wiki.multimedia.cx/index.php?title=ADTS - while (i + 5 < buffer.length) { - - // Loook for the start of an ADTS header.. - if (buffer[i] !== 0xFF || (buffer[i + 1] & 0xF6) !== 0xF0) { - // If a valid header was not found, jump one forward and attempt to - // find a valid ADTS header starting at the next byte - i++; - continue; - } - - // The protection skip bit tells us if we have 2 bytes of CRC data at the - // end of the ADTS header - protectionSkipBytes = (~buffer[i + 1] & 0x01) * 2; - - // Frame length is a 13 bit integer starting 16 bits from the - // end of the sync sequence - frameLength = ((buffer[i + 3] & 0x03) << 11) | - (buffer[i + 4] << 3) | - ((buffer[i + 5] & 0xe0) >> 5); - - sampleCount = ((buffer[i + 6] & 0x03) + 1) * 1024; - adtsFrameDuration = (sampleCount * 90000) / - ADTS_SAMPLING_FREQUENCIES[(buffer[i + 2] & 0x3c) >>> 2]; - - frameEnd = i + frameLength; - - // If we don't have enough data to actually finish this ADTS frame, return - // and wait for more data - if (buffer.byteLength < frameEnd) { - return; - } - - // Otherwise, deliver the complete AAC frame - this.trigger('data', { - pts: packet.pts + (frameNum * adtsFrameDuration), - dts: packet.dts + (frameNum * adtsFrameDuration), - sampleCount: sampleCount, - audioobjecttype: ((buffer[i + 2] >>> 6) & 0x03) + 1, - channelcount: ((buffer[i + 2] & 1) << 3) | - ((buffer[i + 3] & 0xc0) >>> 6), - samplerate: ADTS_SAMPLING_FREQUENCIES[(buffer[i + 2] & 0x3c) >>> 2], - samplingfrequencyindex: (buffer[i + 2] & 0x3c) >>> 2, - // assume ISO/IEC 14496-12 AudioSampleEntry default of 16 - samplesize: 16, - data: buffer.subarray(i + 7 + protectionSkipBytes, frameEnd) - }); - - // If the buffer is empty, clear it and return - if (buffer.byteLength === frameEnd) { - buffer = undefined; - return; - } - - frameNum++; - - // Remove the finished frame from the buffer and start the process again - buffer = buffer.subarray(frameEnd); - } - }; - this.flush = function() { - this.trigger('done'); - }; -}; - -AdtsStream.prototype = new Stream(); - -module.exports = AdtsStream; - -},{"../utils/stream.js":49}],32:[function(require,module,exports){ -'use strict'; - -var Stream = require('../utils/stream.js'); -var ExpGolomb = require('../utils/exp-golomb.js'); - -var H264Stream, NalByteStream; - -/** - * Accepts a NAL unit byte stream and unpacks the embedded NAL units. - */ -NalByteStream = function() { - var - syncPoint = 0, - i, - buffer; - NalByteStream.prototype.init.call(this); - - this.push = function(data) { - var swapBuffer; - - if (!buffer) { - buffer = data.data; - } else { - swapBuffer = new Uint8Array(buffer.byteLength + data.data.byteLength); - swapBuffer.set(buffer); - swapBuffer.set(data.data, buffer.byteLength); - buffer = swapBuffer; - } - - // Rec. ITU-T H.264, Annex B - // scan for NAL unit boundaries - - // a match looks like this: - // 0 0 1 .. NAL .. 0 0 1 - // ^ sync point ^ i - // or this: - // 0 0 1 .. NAL .. 0 0 0 - // ^ sync point ^ i - - // advance the sync point to a NAL start, if necessary - for (; syncPoint < buffer.byteLength - 3; syncPoint++) { - if (buffer[syncPoint + 2] === 1) { - // the sync point is properly aligned - i = syncPoint + 5; - break; - } - } - - while (i < buffer.byteLength) { - // look at the current byte to determine if we've hit the end of - // a NAL unit boundary - switch (buffer[i]) { - case 0: - // skip past non-sync sequences - if (buffer[i - 1] !== 0) { - i += 2; - break; - } else if (buffer[i - 2] !== 0) { - i++; - break; - } - - // deliver the NAL unit - this.trigger('data', buffer.subarray(syncPoint + 3, i - 2)); - - // drop trailing zeroes - do { - i++; - } while (buffer[i] !== 1 && i < buffer.length); - syncPoint = i - 2; - i += 3; - break; - case 1: - // skip past non-sync sequences - if (buffer[i - 1] !== 0 || - buffer[i - 2] !== 0) { - i += 3; - break; - } - - // deliver the NAL unit - this.trigger('data', buffer.subarray(syncPoint + 3, i - 2)); - syncPoint = i - 2; - i += 3; - break; - default: - // the current byte isn't a one or zero, so it cannot be part - // of a sync sequence - i += 3; - break; - } - } - // filter out the NAL units that were delivered - buffer = buffer.subarray(syncPoint); - i -= syncPoint; - syncPoint = 0; - }; - - this.flush = function() { - // deliver the last buffered NAL unit - if (buffer && buffer.byteLength > 3) { - this.trigger('data', buffer.subarray(syncPoint + 3)); - } - // reset the stream state - buffer = null; - syncPoint = 0; - this.trigger('done'); - }; -}; -NalByteStream.prototype = new Stream(); - -/** - * Accepts input from a ElementaryStream and produces H.264 NAL unit data - * events. - */ -H264Stream = function() { - var - nalByteStream = new NalByteStream(), - self, - trackId, - currentPts, - currentDts, - - discardEmulationPreventionBytes, - readSequenceParameterSet, - skipScalingList; - - H264Stream.prototype.init.call(this); - self = this; - - this.push = function(packet) { - if (packet.type !== 'video') { - return; - } - trackId = packet.trackId; - currentPts = packet.pts; - currentDts = packet.dts; - - nalByteStream.push(packet); - }; - - nalByteStream.on('data', function(data) { - var - event = { - trackId: trackId, - pts: currentPts, - dts: currentDts, - data: data - }; - - switch (data[0] & 0x1f) { - case 0x05: - event.nalUnitType = 'slice_layer_without_partitioning_rbsp_idr'; - break; - case 0x06: - event.nalUnitType = 'sei_rbsp'; - event.escapedRBSP = discardEmulationPreventionBytes(data.subarray(1)); - break; - case 0x07: - event.nalUnitType = 'seq_parameter_set_rbsp'; - event.escapedRBSP = discardEmulationPreventionBytes(data.subarray(1)); - event.config = readSequenceParameterSet(event.escapedRBSP); - break; - case 0x08: - event.nalUnitType = 'pic_parameter_set_rbsp'; - break; - case 0x09: - event.nalUnitType = 'access_unit_delimiter_rbsp'; - break; - - default: - break; - } - self.trigger('data', event); - }); - nalByteStream.on('done', function() { - self.trigger('done'); - }); - - this.flush = function() { - nalByteStream.flush(); - }; - - /** - * Advance the ExpGolomb decoder past a scaling list. The scaling - * list is optionally transmitted as part of a sequence parameter - * set and is not relevant to transmuxing. - * @param count {number} the number of entries in this scaling list - * @param expGolombDecoder {object} an ExpGolomb pointed to the - * start of a scaling list - * @see Recommendation ITU-T H.264, Section 7.3.2.1.1.1 - */ - skipScalingList = function(count, expGolombDecoder) { - var - lastScale = 8, - nextScale = 8, - j, - deltaScale; - - for (j = 0; j < count; j++) { - if (nextScale !== 0) { - deltaScale = expGolombDecoder.readExpGolomb(); - nextScale = (lastScale + deltaScale + 256) % 256; - } - - lastScale = (nextScale === 0) ? lastScale : nextScale; - } - }; - - /** - * 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 - */ - discardEmulationPreventionBytes = function(data) { - var - length = data.byteLength, - emulationPreventionBytesPositions = [], - i = 1, - newLength, newData; - - // Find all `Emulation Prevention Bytes` - while (i < length - 2) { - if (data[i] === 0 && data[i + 1] === 0 && data[i + 2] === 0x03) { - emulationPreventionBytesPositions.push(i + 2); - i += 2; - } else { - i++; - } - } - - // If no Emulation Prevention Bytes were found just return the original - // array - if (emulationPreventionBytesPositions.length === 0) { - return data; - } - - // Create a new array to hold the NAL unit data - newLength = length - emulationPreventionBytesPositions.length; - newData = new Uint8Array(newLength); - var sourceIndex = 0; - - for (i = 0; i < newLength; sourceIndex++, i++) { - if (sourceIndex === emulationPreventionBytesPositions[0]) { - // Skip this byte - sourceIndex++; - // Remove this position index - emulationPreventionBytesPositions.shift(); - } - newData[i] = data[sourceIndex]; - } - - return newData; - }; - - /** - * Read a sequence parameter set and return some interesting video - * properties. A sequence parameter set is the H264 metadata that - * describes the properties of upcoming video frames. - * @param data {Uint8Array} the bytes of a sequence parameter set - * @return {object} an object with configuration parsed from the - * sequence parameter set, including the dimensions of the - * associated video frames. - */ - readSequenceParameterSet = function(data) { - var - frameCropLeftOffset = 0, - frameCropRightOffset = 0, - frameCropTopOffset = 0, - frameCropBottomOffset = 0, - expGolombDecoder, profileIdc, levelIdc, profileCompatibility, - chromaFormatIdc, picOrderCntType, - numRefFramesInPicOrderCntCycle, picWidthInMbsMinus1, - picHeightInMapUnitsMinus1, - frameMbsOnlyFlag, - scalingListCount, - i; - - expGolombDecoder = new ExpGolomb(data); - profileIdc = expGolombDecoder.readUnsignedByte(); // profile_idc - profileCompatibility = expGolombDecoder.readUnsignedByte(); // constraint_set[0-5]_flag - levelIdc = expGolombDecoder.readUnsignedByte(); // level_idc u(8) - expGolombDecoder.skipUnsignedExpGolomb(); // seq_parameter_set_id - - // some profiles have more optional data we don't need - if (profileIdc === 100 || - profileIdc === 110 || - profileIdc === 122 || - profileIdc === 244 || - profileIdc === 44 || - profileIdc === 83 || - profileIdc === 86 || - profileIdc === 118 || - profileIdc === 128 || - profileIdc === 138 || - profileIdc === 139 || - profileIdc === 134) { - chromaFormatIdc = expGolombDecoder.readUnsignedExpGolomb(); - if (chromaFormatIdc === 3) { - expGolombDecoder.skipBits(1); // separate_colour_plane_flag - } - expGolombDecoder.skipUnsignedExpGolomb(); // bit_depth_luma_minus8 - expGolombDecoder.skipUnsignedExpGolomb(); // bit_depth_chroma_minus8 - expGolombDecoder.skipBits(1); // qpprime_y_zero_transform_bypass_flag - if (expGolombDecoder.readBoolean()) { // seq_scaling_matrix_present_flag - scalingListCount = (chromaFormatIdc !== 3) ? 8 : 12; - for (i = 0; i < scalingListCount; i++) { - if (expGolombDecoder.readBoolean()) { // seq_scaling_list_present_flag[ i ] - if (i < 6) { - skipScalingList(16, expGolombDecoder); - } else { - skipScalingList(64, expGolombDecoder); - } - } - } - } - } - - expGolombDecoder.skipUnsignedExpGolomb(); // log2_max_frame_num_minus4 - picOrderCntType = expGolombDecoder.readUnsignedExpGolomb(); - - if (picOrderCntType === 0) { - expGolombDecoder.readUnsignedExpGolomb(); //log2_max_pic_order_cnt_lsb_minus4 - } else if (picOrderCntType === 1) { - expGolombDecoder.skipBits(1); // delta_pic_order_always_zero_flag - expGolombDecoder.skipExpGolomb(); // offset_for_non_ref_pic - expGolombDecoder.skipExpGolomb(); // offset_for_top_to_bottom_field - numRefFramesInPicOrderCntCycle = expGolombDecoder.readUnsignedExpGolomb(); - for(i = 0; i < numRefFramesInPicOrderCntCycle; i++) { - expGolombDecoder.skipExpGolomb(); // offset_for_ref_frame[ i ] - } - } - - expGolombDecoder.skipUnsignedExpGolomb(); // max_num_ref_frames - expGolombDecoder.skipBits(1); // gaps_in_frame_num_value_allowed_flag - - picWidthInMbsMinus1 = expGolombDecoder.readUnsignedExpGolomb(); - picHeightInMapUnitsMinus1 = expGolombDecoder.readUnsignedExpGolomb(); - - frameMbsOnlyFlag = expGolombDecoder.readBits(1); - if (frameMbsOnlyFlag === 0) { - expGolombDecoder.skipBits(1); // mb_adaptive_frame_field_flag - } - - expGolombDecoder.skipBits(1); // direct_8x8_inference_flag - if (expGolombDecoder.readBoolean()) { // frame_cropping_flag - frameCropLeftOffset = expGolombDecoder.readUnsignedExpGolomb(); - frameCropRightOffset = expGolombDecoder.readUnsignedExpGolomb(); - frameCropTopOffset = expGolombDecoder.readUnsignedExpGolomb(); - frameCropBottomOffset = expGolombDecoder.readUnsignedExpGolomb(); - } - - return { - profileIdc: profileIdc, - levelIdc: levelIdc, - profileCompatibility: profileCompatibility, - width: ((picWidthInMbsMinus1 + 1) * 16) - frameCropLeftOffset * 2 - frameCropRightOffset * 2, - height: ((2 - frameMbsOnlyFlag) * (picHeightInMapUnitsMinus1 + 1) * 16) - (frameCropTopOffset * 2) - (frameCropBottomOffset * 2) - }; - }; - -}; -H264Stream.prototype = new Stream(); - -module.exports = { - H264Stream: H264Stream, - NalByteStream: NalByteStream, -}; - -},{"../utils/exp-golomb.js":48,"../utils/stream.js":49}],33:[function(require,module,exports){ -module.exports = { - adts: require('./adts'), - h264: require('./h264'), -}; - -},{"./adts":31,"./h264":32}],34:[function(require,module,exports){ -/** - * An object that stores the bytes of an FLV tag and methods for - * querying and manipulating that data. - * @see http://download.macromedia.com/f4v/video_file_format_spec_v10_1.pdf - */ -'use strict'; - -var FlvTag; - -// (type:uint, extraData:Boolean = false) extends ByteArray -FlvTag = function(type, extraData) { - var - // Counter if this is a metadata tag, nal start marker if this is a video - // tag. unused if this is an audio tag - adHoc = 0, // :uint - - // The default size is 16kb but this is not enough to hold iframe - // data and the resizing algorithm costs a bit so we create a larger - // starting buffer for video tags - bufferStartSize = 16384, - - // checks whether the FLV tag has enough capacity to accept the proposed - // write and re-allocates the internal buffers if necessary - prepareWrite = function(flv, count) { - var - bytes, - minLength = flv.position + count; - if (minLength < flv.bytes.byteLength) { - // there's enough capacity so do nothing - return; - } - - // allocate a new buffer and copy over the data that will not be modified - bytes = new Uint8Array(minLength * 2); - bytes.set(flv.bytes.subarray(0, flv.position), 0); - flv.bytes = bytes; - flv.view = new DataView(flv.bytes.buffer); - }, - - // commonly used metadata properties - widthBytes = FlvTag.widthBytes || new Uint8Array('width'.length), - heightBytes = FlvTag.heightBytes || new Uint8Array('height'.length), - videocodecidBytes = FlvTag.videocodecidBytes || new Uint8Array('videocodecid'.length), - i; - - if (!FlvTag.widthBytes) { - // calculating the bytes of common metadata names ahead of time makes the - // corresponding writes faster because we don't have to loop over the - // characters - // re-test with test/perf.html if you're planning on changing this - for (i = 0; i < 'width'.length; i++) { - widthBytes[i] = 'width'.charCodeAt(i); - } - for (i = 0; i < 'height'.length; i++) { - heightBytes[i] = 'height'.charCodeAt(i); - } - for (i = 0; i < 'videocodecid'.length; i++) { - videocodecidBytes[i] = 'videocodecid'.charCodeAt(i); - } - - FlvTag.widthBytes = widthBytes; - FlvTag.heightBytes = heightBytes; - FlvTag.videocodecidBytes = videocodecidBytes; - } - - this.keyFrame = false; // :Boolean - - switch(type) { - case FlvTag.VIDEO_TAG: - this.length = 16; - // Start the buffer at 256k - bufferStartSize *= 6; - break; - case FlvTag.AUDIO_TAG: - this.length = 13; - this.keyFrame = true; - break; - case FlvTag.METADATA_TAG: - this.length = 29; - this.keyFrame = true; - break; - default: - throw("Error Unknown TagType"); - } - - this.bytes = new Uint8Array(bufferStartSize); - this.view = new DataView(this.bytes.buffer); - this.bytes[0] = type; - this.position = this.length; - this.keyFrame = extraData; // Defaults to false - - // presentation timestamp - this.pts = 0; - // decoder timestamp - this.dts = 0; - - // ByteArray#writeBytes(bytes:ByteArray, offset:uint = 0, length:uint = 0) - this.writeBytes = function(bytes, offset, length) { - var - start = offset || 0, - end; - length = length || bytes.byteLength; - end = start + length; - - prepareWrite(this, length); - this.bytes.set(bytes.subarray(start, end), this.position); - - this.position += length; - this.length = Math.max(this.length, this.position); - }; - - // ByteArray#writeByte(value:int):void - this.writeByte = function(byte) { - prepareWrite(this, 1); - this.bytes[this.position] = byte; - this.position++; - this.length = Math.max(this.length, this.position); - }; - - // ByteArray#writeShort(value:int):void - this.writeShort = function(short) { - prepareWrite(this, 2); - this.view.setUint16(this.position, short); - this.position += 2; - this.length = Math.max(this.length, this.position); - }; - - // Negative index into array - // (pos:uint):int - this.negIndex = function(pos) { - return this.bytes[this.length - pos]; - }; - - // The functions below ONLY work when this[0] == VIDEO_TAG. - // We are not going to check for that because we dont want the overhead - // (nal:ByteArray = null):int - this.nalUnitSize = function() { - if (adHoc === 0) { - return 0; - } - - return this.length - (adHoc + 4); - }; - - this.startNalUnit = function() { - // remember position and add 4 bytes - if (adHoc > 0) { - throw new Error("Attempted to create new NAL wihout closing the old one"); - } - - // reserve 4 bytes for nal unit size - adHoc = this.length; - this.length += 4; - this.position = this.length; - }; - - // (nal:ByteArray = null):void - this.endNalUnit = function(nalContainer) { - var - nalStart, // :uint - nalLength; // :uint - - // Rewind to the marker and write the size - if (this.length === adHoc + 4) { - // we started a nal unit, but didnt write one, so roll back the 4 byte size value - this.length -= 4; - } else if (adHoc > 0) { - nalStart = adHoc + 4; - nalLength = this.length - nalStart; - - this.position = adHoc; - this.view.setUint32(this.position, nalLength); - this.position = this.length; - - if (nalContainer) { - // Add the tag to the NAL unit - nalContainer.push(this.bytes.subarray(nalStart, nalStart + nalLength)); - } - } - - adHoc = 0; - }; - - /** - * Write out a 64-bit floating point valued metadata property. This method is - * called frequently during a typical parse and needs to be fast. - */ - // (key:String, val:Number):void - this.writeMetaDataDouble = function(key, val) { - var i; - prepareWrite(this, 2 + key.length + 9); - - // write size of property name - this.view.setUint16(this.position, key.length); - this.position += 2; - - // this next part looks terrible but it improves parser throughput by - // 10kB/s in my testing - - // write property name - if (key === 'width') { - this.bytes.set(widthBytes, this.position); - this.position += 5; - } else if (key === 'height') { - this.bytes.set(heightBytes, this.position); - this.position += 6; - } else if (key === 'videocodecid') { - this.bytes.set(videocodecidBytes, this.position); - this.position += 12; - } else { - for (i = 0; i < key.length; i++) { - this.bytes[this.position] = key.charCodeAt(i); - this.position++; - } - } - - // skip null byte - this.position++; - - // write property value - this.view.setFloat64(this.position, val); - this.position += 8; - - // update flv tag length - this.length = Math.max(this.length, this.position); - ++adHoc; - }; - - // (key:String, val:Boolean):void - this.writeMetaDataBoolean = function(key, val) { - var i; - prepareWrite(this, 2); - this.view.setUint16(this.position, key.length); - this.position += 2; - for (i = 0; i < key.length; i++) { - // if key.charCodeAt(i) >= 255, handle error - prepareWrite(this, 1); - this.bytes[this.position] = key.charCodeAt(i); - this.position++; - } - prepareWrite(this, 2); - this.view.setUint8(this.position, 0x01); - this.position++; - this.view.setUint8(this.position, val ? 0x01 : 0x00); - this.position++; - this.length = Math.max(this.length, this.position); - ++adHoc; - }; - - // ():ByteArray - this.finalize = function() { - var - dtsDelta, // :int - len; // :int - - switch(this.bytes[0]) { - // Video Data - case FlvTag.VIDEO_TAG: - this.bytes[11] = ((this.keyFrame || extraData) ? 0x10 : 0x20 ) | 0x07; // We only support AVC, 1 = key frame (for AVC, a seekable frame), 2 = inter frame (for AVC, a non-seekable frame) - this.bytes[12] = extraData ? 0x00 : 0x01; - - dtsDelta = this.pts - this.dts; - this.bytes[13] = (dtsDelta & 0x00FF0000) >>> 16; - this.bytes[14] = (dtsDelta & 0x0000FF00) >>> 8; - this.bytes[15] = (dtsDelta & 0x000000FF) >>> 0; - break; - - case FlvTag.AUDIO_TAG: - this.bytes[11] = 0xAF; // 44 kHz, 16-bit stereo - this.bytes[12] = extraData ? 0x00 : 0x01; - break; - - case FlvTag.METADATA_TAG: - this.position = 11; - this.view.setUint8(this.position, 0x02); // String type - this.position++; - this.view.setUint16(this.position, 0x0A); // 10 Bytes - this.position += 2; - // set "onMetaData" - this.bytes.set([0x6f, 0x6e, 0x4d, 0x65, - 0x74, 0x61, 0x44, 0x61, - 0x74, 0x61], this.position); - this.position += 10; - this.bytes[this.position] = 0x08; // Array type - this.position++; - this.view.setUint32(this.position, adHoc); - this.position = this.length; - this.bytes.set([0, 0, 9], this.position); - this.position += 3; // End Data Tag - this.length = this.position; - break; - } - - len = this.length - 11; - - // write the DataSize field - this.bytes[ 1] = (len & 0x00FF0000) >>> 16; - this.bytes[ 2] = (len & 0x0000FF00) >>> 8; - this.bytes[ 3] = (len & 0x000000FF) >>> 0; - // write the Timestamp - this.bytes[ 4] = (this.dts & 0x00FF0000) >>> 16; - this.bytes[ 5] = (this.dts & 0x0000FF00) >>> 8; - this.bytes[ 6] = (this.dts & 0x000000FF) >>> 0; - this.bytes[ 7] = (this.dts & 0xFF000000) >>> 24; - // write the StreamID - this.bytes[ 8] = 0; - this.bytes[ 9] = 0; - this.bytes[10] = 0; - - // Sometimes we're at the end of the view and have one slot to write a - // uint32, so, prepareWrite of count 4, since, view is uint8 - prepareWrite(this, 4); - this.view.setUint32(this.length, this.length); - this.length += 4; - this.position += 4; - - // trim down the byte buffer to what is actually being used - this.bytes = this.bytes.subarray(0, this.length); - this.frameTime = FlvTag.frameTime(this.bytes); - // if bytes.bytelength isn't equal to this.length, handle error - return this; - }; -}; - -FlvTag.AUDIO_TAG = 0x08; // == 8, :uint -FlvTag.VIDEO_TAG = 0x09; // == 9, :uint -FlvTag.METADATA_TAG = 0x12; // == 18, :uint - -// (tag:ByteArray):Boolean { -FlvTag.isAudioFrame = function(tag) { - return FlvTag.AUDIO_TAG === tag[0]; -}; - -// (tag:ByteArray):Boolean { -FlvTag.isVideoFrame = function(tag) { - return FlvTag.VIDEO_TAG === tag[0]; -}; - -// (tag:ByteArray):Boolean { -FlvTag.isMetaData = function(tag) { - return FlvTag.METADATA_TAG === tag[0]; -}; - -// (tag:ByteArray):Boolean { -FlvTag.isKeyFrame = function(tag) { - if (FlvTag.isVideoFrame(tag)) { - return tag[11] === 0x17; - } - - if (FlvTag.isAudioFrame(tag)) { - return true; - } - - if (FlvTag.isMetaData(tag)) { - return true; - } - - return false; -}; - -// (tag:ByteArray):uint { -FlvTag.frameTime = function(tag) { - var pts = tag[ 4] << 16; // :uint - pts |= tag[ 5] << 8; - pts |= tag[ 6] << 0; - pts |= tag[ 7] << 24; - return pts; -}; - -module.exports = FlvTag; - -},{}],35:[function(require,module,exports){ -module.exports = { - tag: require('./flv-tag'), - Transmuxer: require('./transmuxer'), - tools: require('../tools/flv-inspector'), -}; - -},{"../tools/flv-inspector":46,"./flv-tag":34,"./transmuxer":36}],36:[function(require,module,exports){ -'use strict'; - -var Stream = require('../utils/stream.js'); -var FlvTag = require('./flv-tag.js'); -var m2ts = require('../m2ts/m2ts.js'); -var AdtsStream = require('../codecs/adts.js'); -var H264Stream = require('../codecs/h264').H264Stream; - -var - MetadataStream, - Transmuxer, - VideoSegmentStream, - AudioSegmentStream, - CoalesceStream, - collectTimelineInfo, - metaDataTag, - extraDataTag; - -/** - * Store information about the start and end of the tracka and the - * duration for each frame/sample we process in order to calculate - * the baseMediaDecodeTime - */ -collectTimelineInfo = function (track, data) { - if (typeof data.pts === 'number') { - if (track.timelineStartInfo.pts === undefined) { - track.timelineStartInfo.pts = data.pts; - } else { - track.timelineStartInfo.pts = - Math.min(track.timelineStartInfo.pts, data.pts); - } - } - - if (typeof data.dts === 'number') { - if (track.timelineStartInfo.dts === undefined) { - track.timelineStartInfo.dts = data.dts; - } else { - track.timelineStartInfo.dts = - Math.min(track.timelineStartInfo.dts, data.dts); - } - } -}; - -metaDataTag = function(track, pts) { - var - tag = new FlvTag(FlvTag.METADATA_TAG); // :FlvTag - - tag.dts = pts; - tag.pts = pts; - - tag.writeMetaDataDouble("videocodecid", 7); - tag.writeMetaDataDouble("width", track.width); - tag.writeMetaDataDouble("height", track.height); - - return tag; -}; - -extraDataTag = function(track, pts) { - var - i, - tag = new FlvTag(FlvTag.VIDEO_TAG, true); - - tag.dts = pts; - tag.pts = pts; - - tag.writeByte(0x01);// version - tag.writeByte(track.profileIdc);// profile - tag.writeByte(track.profileCompatibility);// compatibility - tag.writeByte(track.levelIdc);// level - tag.writeByte(0xFC | 0x03); // reserved (6 bits), NULA length size - 1 (2 bits) - tag.writeByte(0xE0 | 0x01 ); // reserved (3 bits), num of SPS (5 bits) - tag.writeShort( track.sps[0].length ); // data of SPS - tag.writeBytes( track.sps[0] ); // SPS - - tag.writeByte(track.pps.length); // num of PPS (will there ever be more that 1 PPS?) - for (i = 0 ; i < track.pps.length ; ++i) { - tag.writeShort(track.pps[i].length); // 2 bytes for length of PPS - tag.writeBytes(track.pps[i]); // data of PPS - } - - return tag; -}; - -/** - * Constructs a single-track, media segment from AAC data - * events. The output of this stream can be fed to flash. - */ -AudioSegmentStream = function(track) { - var - adtsFrames = [], - adtsFramesLength = 0, - sequenceNumber = 0, - earliestAllowedDts = 0, - oldExtraData; - - AudioSegmentStream.prototype.init.call(this); - - this.push = function(data) { - collectTimelineInfo(track, data); - - if (track && track.channelcount === undefined) { - track.audioobjecttype = data.audioobjecttype; - track.channelcount = data.channelcount; - track.samplerate = data.samplerate; - track.samplingfrequencyindex = data.samplingfrequencyindex; - track.samplesize = data.samplesize; - track.extraData = (track.audioobjecttype << 11) | - (track.samplingfrequencyindex << 7) | - (track.channelcount << 3); - } - - data.pts = Math.round(data.pts / 90); - data.dts = Math.round(data.dts / 90); - - // buffer audio data until end() is called - adtsFrames.push(data); - }; - - this.flush = function() { - var currentFrame, adtsFrame, deltaDts,lastMetaPts, tags = []; - // return early if no audio data has been observed - if (adtsFrames.length === 0) { - this.trigger('done'); - return; - } - - lastMetaPts = -Infinity; - - while (adtsFrames.length) { - currentFrame = adtsFrames.shift(); - - // write out metadata tags every 1 second so that the decoder - // is re-initialized quickly after seeking into a different - // audio configuration - if (track.extraData !== oldExtraData || currentFrame.pts - lastMetaPts >= 1000) { - adtsFrame = new FlvTag(FlvTag.METADATA_TAG); - adtsFrame.pts = currentFrame.pts; - adtsFrame.dts = currentFrame.dts; - - // AAC is always 10 - adtsFrame.writeMetaDataDouble("audiocodecid", 10); - adtsFrame.writeMetaDataBoolean("stereo", 2 === track.channelcount); - adtsFrame.writeMetaDataDouble ("audiosamplerate", track.samplerate); - // Is AAC always 16 bit? - adtsFrame.writeMetaDataDouble ("audiosamplesize", 16); - - tags.push(adtsFrame); - - oldExtraData = track.extraData; - - adtsFrame = new FlvTag(FlvTag.AUDIO_TAG, true); - // For audio, DTS is always the same as PTS. We want to set the DTS - // however so we can compare with video DTS to determine approximate - // packet order - adtsFrame.pts = currentFrame.pts; - adtsFrame.dts = currentFrame.dts; - - adtsFrame.view.setUint16(adtsFrame.position, track.extraData); - adtsFrame.position += 2; - adtsFrame.length = Math.max(adtsFrame.length, adtsFrame.position); - - tags.push(adtsFrame); - - lastMetaPts = currentFrame.pts; - } - adtsFrame = new FlvTag(FlvTag.AUDIO_TAG); - adtsFrame.pts = currentFrame.pts; - adtsFrame.dts = currentFrame.dts; - - adtsFrame.writeBytes(currentFrame.data); - - tags.push(adtsFrame); - } - - oldExtraData = null; - this.trigger('data', {track: track, tags: tags}); - - this.trigger('done'); - }; -}; -AudioSegmentStream.prototype = new Stream(); - -/** - * Store FlvTags for the h264 stream - * @param track {object} track metadata configuration - */ -VideoSegmentStream = function(track) { - var - sequenceNumber = 0, - nalUnits = [], - nalUnitsLength = 0, - config, - h264Frame; - VideoSegmentStream.prototype.init.call(this); - - this.finishFrame = function(tags, frame) { - if (!frame) { - return; - } - // Check if keyframe and the length of tags. - // This makes sure we write metadata on the first frame of a segment. - if (config && track && track.newMetadata && - (frame.keyFrame || tags.length === 0)) { - // Push extra data on every IDR frame in case we did a stream change + seek - tags.push(metaDataTag(config, frame.pts)); - tags.push(extraDataTag(track, frame.pts)); - track.newMetadata = false; - } - - frame.endNalUnit(); - tags.push(frame); - }; - - this.push = function(data) { - collectTimelineInfo(track, data); - - data.pts = Math.round(data.pts / 90); - data.dts = Math.round(data.dts / 90); - - // buffer video until flush() is called - nalUnits.push(data); - }; - - this.flush = function() { - var - currentNal, - tags = []; - - // Throw away nalUnits at the start of the byte stream until we find - // the first AUD - while (nalUnits.length) { - if (nalUnits[0].nalUnitType === 'access_unit_delimiter_rbsp') { - break; - } - nalUnits.shift(); - } - - // return early if no video data has been observed - if (nalUnits.length === 0) { - this.trigger('done'); - return; - } - - while (nalUnits.length) { - currentNal = nalUnits.shift(); - - // record the track config - if (currentNal.nalUnitType === 'seq_parameter_set_rbsp') { - track.newMetadata = true; - config = currentNal.config; - track.width = config.width; - track.height = config.height; - track.sps = [currentNal.data]; - track.profileIdc = config.profileIdc; - track.levelIdc = config.levelIdc; - track.profileCompatibility = config.profileCompatibility; - h264Frame.endNalUnit(); - } else if (currentNal.nalUnitType === 'pic_parameter_set_rbsp') { - track.newMetadata = true; - track.pps = [currentNal.data]; - h264Frame.endNalUnit(); - } else if (currentNal.nalUnitType === 'access_unit_delimiter_rbsp') { - if (h264Frame) { - this.finishFrame(tags, h264Frame); - } - h264Frame = new FlvTag(FlvTag.VIDEO_TAG); - h264Frame.pts = currentNal.pts; - h264Frame.dts = currentNal.dts; - } else { - if (currentNal.nalUnitType === 'slice_layer_without_partitioning_rbsp_idr') { - // the current sample is a key frame - h264Frame.keyFrame = true; - } - h264Frame.endNalUnit(); - } - h264Frame.startNalUnit(); - h264Frame.writeBytes(currentNal.data); - } - if (h264Frame) { - this.finishFrame(tags, h264Frame); - } - - this.trigger('data', {track: track, tags: tags}); - - // Continue with the flush process now - this.trigger('done'); - }; -}; - -VideoSegmentStream.prototype = new Stream(); - -/** - * The final stage of the transmuxer that emits the flv tags - * for audio, video, and metadata. Also tranlates in time and - * outputs caption data and id3 cues. - */ -CoalesceStream = function(options) { - // Number of Tracks per output segment - // If greater than 1, we combine multiple - // tracks into a single segment - this.numberOfTracks = 0; - this.metadataStream = options.metadataStream; - - this.videoTags = []; - this.audioTags = []; - this.videoTrack = null; - this.audioTrack = null; - this.pendingCaptions = []; - this.pendingMetadata = []; - this.pendingTracks = 0; - - CoalesceStream.prototype.init.call(this); - - // Take output from multiple - this.push = function(output) { - // buffer incoming captions until the associated video segment - // finishes - if (output.text) { - return this.pendingCaptions.push(output); - } - // buffer incoming id3 tags until the final flush - if (output.frames) { - return this.pendingMetadata.push(output); - } - - if (output.track.type === 'video') { - this.videoTrack = output.track; - this.videoTags = output.tags; - this.pendingTracks++; - } - if (output.track.type === 'audio') { - this.audioTrack = output.track; - this.audioTags = output.tags; - this.pendingTracks++; - } - }; -}; - -CoalesceStream.prototype = new Stream(); -CoalesceStream.prototype.flush = function() { - var - id3, - caption, - i, - timelineStartPts, - event = { - tags: {}, - captions: [], - metadata: [] - }; - - if (this.pendingTracks < this.numberOfTracks) { - return; - } - - if (this.videoTrack) { - timelineStartPts = this.videoTrack.timelineStartInfo.pts; - } else if (this.audioTrack) { - timelineStartPts = this.audioTrack.timelineStartInfo.pts; - } - - event.tags.videoTags = this.videoTags; - event.tags.audioTags = this.audioTags; - - // Translate caption PTS times into second offsets into the - // video timeline for the segment - for (i = 0; i < this.pendingCaptions.length; i++) { - caption = this.pendingCaptions[i]; - caption.startTime = caption.startPts - timelineStartPts; - caption.startTime /= 90e3; - caption.endTime = caption.endPts - timelineStartPts; - caption.endTime /= 90e3; - event.captions.push(caption); - } - - // Translate ID3 frame PTS times into second offsets into the - // video timeline for the segment - for (i = 0; i < this.pendingMetadata.length; i++) { - id3 = this.pendingMetadata[i]; - id3.cueTime = id3.pts - timelineStartPts; - id3.cueTime /= 90e3; - event.metadata.push(id3); - } - // We add this to every single emitted segment even though we only need - // it for the first - event.metadata.dispatchType = this.metadataStream.dispatchType; - - // Reset stream state - this.videoTrack = null; - this.audioTrack = null; - this.videoTags = []; - this.audioTags = []; - this.pendingCaptions.length = 0; - this.pendingMetadata.length = 0; - this.pendingTracks = 0; - - // Emit the final segment - this.trigger('data', event); - - this.trigger('done'); -}; - -/** - * An object that incrementally transmuxes MPEG2 Trasport Stream - * chunks into an FLV. - */ -Transmuxer = function(options) { - var - self = this, - videoTrack, - audioTrack, - - packetStream, parseStream, elementaryStream, - adtsStream, h264Stream, - videoSegmentStream, audioSegmentStream, captionStream, - coalesceStream; - - Transmuxer.prototype.init.call(this); - - options = options || {}; - - // expose the metadata stream - this.metadataStream = new m2ts.MetadataStream(); - - options.metadataStream = this.metadataStream; - - // set up the parsing pipeline - packetStream = new m2ts.TransportPacketStream(); - parseStream = new m2ts.TransportParseStream(); - elementaryStream = new m2ts.ElementaryStream(); - adtsStream = new AdtsStream(); - h264Stream = new H264Stream(); - coalesceStream = new CoalesceStream(options); - - // disassemble MPEG2-TS packets into elementary streams - packetStream - .pipe(parseStream) - .pipe(elementaryStream); - - // !!THIS ORDER IS IMPORTANT!! - // demux the streams - elementaryStream - .pipe(h264Stream); - elementaryStream - .pipe(adtsStream); - - elementaryStream - .pipe(this.metadataStream) - .pipe(coalesceStream); - // if CEA-708 parsing is available, hook up a caption stream - captionStream = new m2ts.CaptionStream(); - h264Stream.pipe(captionStream) - .pipe(coalesceStream); - - // hook up the segment streams once track metadata is delivered - elementaryStream.on('data', function(data) { - var i, videoTrack, audioTrack; - - if (data.type === 'metadata') { - i = data.tracks.length; - - // scan the tracks listed in the metadata - while (i--) { - if (data.tracks[i].type === 'video') { - videoTrack = data.tracks[i]; - } else if (data.tracks[i].type === 'audio') { - audioTrack = data.tracks[i]; - } - } - - // hook up the video segment stream to the first track with h264 data - if (videoTrack && !videoSegmentStream) { - coalesceStream.numberOfTracks++; - videoSegmentStream = new VideoSegmentStream(videoTrack); - - // Set up the final part of the video pipeline - h264Stream - .pipe(videoSegmentStream) - .pipe(coalesceStream); - } - - if (audioTrack && !audioSegmentStream) { - // hook up the audio segment stream to the first track with aac data - coalesceStream.numberOfTracks++; - audioSegmentStream = new AudioSegmentStream(audioTrack); - - // Set up the final part of the audio pipeline - adtsStream - .pipe(audioSegmentStream) - .pipe(coalesceStream); - } - } - }); - - // feed incoming data to the front of the parsing pipeline - this.push = function(data) { - packetStream.push(data); - }; - - // flush any buffered data - this.flush = function() { - // Start at the top of the pipeline and flush all pending work - packetStream.flush(); - }; - - // Re-emit any data coming from the coalesce stream to the outside world - coalesceStream.on('data', function (event) { - self.trigger('data', event); - }); - - // Let the consumer know we have finished flushing the entire pipeline - coalesceStream.on('done', function () { - self.trigger('done'); - }); - - // For information on the FLV format, see - // http://download.macromedia.com/f4v/video_file_format_spec_v10_1.pdf. - // Technically, this function returns the header and a metadata FLV tag - // if duration is greater than zero - // duration in seconds - // @return {object} the bytes of the FLV header as a Uint8Array - this.getFlvHeader = function(duration, audio, video) { // :ByteArray { - var - headBytes = new Uint8Array(3 + 1 + 1 + 4), - head = new DataView(headBytes.buffer), - metadata, - result, - metadataLength; - - // default arguments - duration = duration || 0; - audio = audio === undefined? true : audio; - video = video === undefined? true : video; - - // signature - head.setUint8(0, 0x46); // 'F' - head.setUint8(1, 0x4c); // 'L' - head.setUint8(2, 0x56); // 'V' - - // version - head.setUint8(3, 0x01); - - // flags - head.setUint8(4, (audio ? 0x04 : 0x00) | (video ? 0x01 : 0x00)); - - // data offset, should be 9 for FLV v1 - head.setUint32(5, headBytes.byteLength); - - // init the first FLV tag - if (duration <= 0) { - // no duration available so just write the first field of the first - // FLV tag - result = new Uint8Array(headBytes.byteLength + 4); - result.set(headBytes); - result.set([0, 0, 0, 0], headBytes.byteLength); - return result; - } - - // write out the duration metadata tag - metadata = new FlvTag(FlvTag.METADATA_TAG); - metadata.pts = metadata.dts = 0; - metadata.writeMetaDataDouble("duration", duration); - metadataLength = metadata.finalize().length; - result = new Uint8Array(headBytes.byteLength + metadataLength); - result.set(headBytes); - result.set(head.byteLength, metadataLength); - - return result; - }; -}; -Transmuxer.prototype = new Stream(); - -// forward compatibility -module.exports = Transmuxer; - -},{"../codecs/adts.js":31,"../codecs/h264":32,"../m2ts/m2ts.js":40,"../utils/stream.js":49,"./flv-tag.js":34}],37:[function(require,module,exports){ -'use strict'; - -var muxjs = { - codecs: require('./codecs'), - mp4: require('./mp4'), - flv: require('./flv'), - mp2t: require('./m2ts'), -}; -module.exports = muxjs; - -},{"./codecs":33,"./flv":35,"./m2ts":39,"./mp4":43}],38:[function(require,module,exports){ -/** - * mux.js - * - * Copyright (c) 2015 Brightcove - * All rights reserved. - * - * Reads in-band caption information from a video elementary - * stream. Captions must follow the CEA-708 standard for injection - * into an MPEG-2 transport streams. - * @see https://en.wikipedia.org/wiki/CEA-708 - */ - -'use strict'; - -// ----------------- -// Link To Transport -// ----------------- - -// Supplemental enhancement information (SEI) NAL units have a -// payload type field to indicate how they are to be -// interpreted. CEAS-708 caption content is always transmitted with -// payload type 0x04. -var USER_DATA_REGISTERED_ITU_T_T35 = 4, - RBSP_TRAILING_BITS = 128, - Stream = require('../utils/stream'); - -/** - * Parse a supplemental enhancement information (SEI) NAL unit. - * Stops parsing once a message of type ITU T T35 has been found. - * - * @param bytes {Uint8Array} the bytes of a SEI NAL unit - * @return {object} the parsed SEI payload - * @see Rec. ITU-T H.264, 7.3.2.3.1 - */ -var parseSei = function(bytes) { - var - i = 0, - result = { - payloadType: -1, - payloadSize: 0, - }, - payloadType = 0, - payloadSize = 0; - - // go through the sei_rbsp parsing each each individual sei_message - while (i < bytes.byteLength) { - // stop once we have hit the end of the sei_rbsp - if (bytes[i] === RBSP_TRAILING_BITS) { - break; - } - - // Parse payload type - while (bytes[i] === 0xFF) { - payloadType += 255; - i++; - } - payloadType += bytes[i++]; - - // Parse payload size - while (bytes[i] === 0xFF) { - payloadSize += 255; - i++; - } - payloadSize += bytes[i++]; - - // this sei_message is a 608/708 caption so save it and break - // there can only ever be one caption message in a frame's sei - if (!result.payload && payloadType === USER_DATA_REGISTERED_ITU_T_T35) { - result.payloadType = payloadType; - result.payloadSize = payloadSize; - result.payload = bytes.subarray(i, i + payloadSize); - break; - } - - // skip the payload and parse the next message - i += payloadSize; - payloadType = 0; - payloadSize = 0; - } - - return result; -}; - -// see ANSI/SCTE 128-1 (2013), section 8.1 -var parseUserData = function(sei) { - // itu_t_t35_contry_code must be 181 (United States) for - // captions - if (sei.payload[0] !== 181) { - return null; - } - - // itu_t_t35_provider_code should be 49 (ATSC) for captions - if (((sei.payload[1] << 8) | sei.payload[2]) !== 49) { - return null; - } - - // the user_identifier should be "GA94" to indicate ATSC1 data - if (String.fromCharCode(sei.payload[3], - sei.payload[4], - sei.payload[5], - sei.payload[6]) !== 'GA94') { - return null; - } - - // finally, user_data_type_code should be 0x03 for caption data - if (sei.payload[7] !== 0x03) { - return null; - } - - // return the user_data_type_structure and strip the trailing - // marker bits - return sei.payload.subarray(8, sei.payload.length - 1); -}; - -// see CEA-708-D, section 4.4 -var parseCaptionPackets = function(pts, userData) { - var results = [], i, count, offset, data; - - // if this is just filler, return immediately - if (!(userData[0] & 0x40)) { - return results; - } - - // parse out the cc_data_1 and cc_data_2 fields - count = userData[0] & 0x1f; - for (i = 0; i < count; i++) { - offset = i * 3; - data = { - type: userData[offset + 2] & 0x03, - pts: pts - }; - - // capture cc data when cc_valid is 1 - if (userData[offset + 2] & 0x04) { - data.ccData = (userData[offset + 3] << 8) | userData[offset + 4]; - results.push(data); - } - } - return results; -}; - -var CaptionStream = function() { - var self = this; - CaptionStream.prototype.init.call(this); - - this.captionPackets_ = []; - - this.field1_ = new Cea608Stream(); - - // forward data and done events from field1_ to this CaptionStream - this.field1_.on('data', this.trigger.bind(this, 'data')); - this.field1_.on('done', this.trigger.bind(this, 'done')); -}; -CaptionStream.prototype = new Stream(); -CaptionStream.prototype.push = function(event) { - var sei, userData, captionPackets; - - // only examine SEI NALs - if (event.nalUnitType !== 'sei_rbsp') { - return; - } - - // parse the sei - sei = parseSei(event.escapedRBSP); - - // ignore everything but user_data_registered_itu_t_t35 - if (sei.payloadType !== USER_DATA_REGISTERED_ITU_T_T35) { - return; - } - - // parse out the user data payload - userData = parseUserData(sei); - - // ignore unrecognized userData - if (!userData) { - return; - } - - // parse out CC data packets and save them for later - this.captionPackets_ = this.captionPackets_.concat(parseCaptionPackets(event.pts, userData)); -}; - -CaptionStream.prototype.flush = function () { - // make sure we actually parsed captions before proceeding - if (!this.captionPackets_.length) { - this.field1_.flush(); - return; - } - - // sort caption byte-pairs based on their PTS values - this.captionPackets_.sort(function(a, b) { - return a.pts - b.pts; - }); - - // Push each caption into Cea608Stream - this.captionPackets_.forEach(this.field1_.push, this.field1_); - - this.captionPackets_.length = 0; - this.field1_.flush(); - return; -}; -// ---------------------- -// Session to Application -// ---------------------- - -var BASIC_CHARACTER_TRANSLATION = { - 0x2a: 0xe1, - 0x5c: 0xe9, - 0x5e: 0xed, - 0x5f: 0xf3, - 0x60: 0xfa, - 0x7b: 0xe7, - 0x7c: 0xf7, - 0x7d: 0xd1, - 0x7e: 0xf1, - 0x7f: 0x2588 -}; - -var getCharFromCode = function(code) { - if(code === null) { - return ''; - } - code = BASIC_CHARACTER_TRANSLATION[code] || code; - return String.fromCharCode(code); -}; - -// Constants for the byte codes recognized by Cea608Stream. This -// list is not exhaustive. For a more comprehensive listing and -// semantics see -// http://www.gpo.gov/fdsys/pkg/CFR-2010-title47-vol1/pdf/CFR-2010-title47-vol1-sec15-119.pdf -var PADDING = 0x0000, - - // Pop-on Mode - RESUME_CAPTION_LOADING = 0x1420, - END_OF_CAPTION = 0x142f, - - // Roll-up Mode - ROLL_UP_2_ROWS = 0x1425, - ROLL_UP_3_ROWS = 0x1426, - ROLL_UP_4_ROWS = 0x1427, - RESUME_DIRECT_CAPTIONING = 0x1429, - CARRIAGE_RETURN = 0x142d, - // Erasure - BACKSPACE = 0x1421, - ERASE_DISPLAYED_MEMORY = 0x142c, - ERASE_NON_DISPLAYED_MEMORY = 0x142e; - -// the index of the last row in a CEA-608 display buffer -var BOTTOM_ROW = 14; -// CEA-608 captions are rendered onto a 34x15 matrix of character -// cells. The "bottom" row is the last element in the outer array. -var createDisplayBuffer = function() { - var result = [], i = BOTTOM_ROW + 1; - while (i--) { - result.push(''); - } - return result; -}; - -var Cea608Stream = function() { - Cea608Stream.prototype.init.call(this); - - this.mode_ = 'popOn'; - // When in roll-up mode, the index of the last row that will - // actually display captions. If a caption is shifted to a row - // with a lower index than this, it is cleared from the display - // buffer - this.topRow_ = 0; - this.startPts_ = 0; - this.displayed_ = createDisplayBuffer(); - this.nonDisplayed_ = createDisplayBuffer(); - this.lastControlCode_ = null; - - this.push = function(packet) { - // Ignore other channels - if (packet.type !== 0) { - return; - } - var data, swap, char0, char1; - // remove the parity bits - data = packet.ccData & 0x7f7f; - - // ignore duplicate control codes - if (data === this.lastControlCode_) { - this.lastControlCode_ = null; - return; - } - - // Store control codes - if ((data & 0xf000) === 0x1000) { - this.lastControlCode_ = data; - } else { - this.lastControlCode_ = null; - } - - switch (data) { - case PADDING: - break; - case RESUME_CAPTION_LOADING: - this.mode_ = 'popOn'; - break; - case END_OF_CAPTION: - // if a caption was being displayed, it's gone now - this.flushDisplayed(packet.pts); - - // flip memory - swap = this.displayed_; - this.displayed_ = this.nonDisplayed_; - this.nonDisplayed_ = swap; - - // start measuring the time to display the caption - this.startPts_ = packet.pts; - break; - - case ROLL_UP_2_ROWS: - this.topRow_ = BOTTOM_ROW - 1; - this.mode_ = 'rollUp'; - break; - case ROLL_UP_3_ROWS: - this.topRow_ = BOTTOM_ROW - 2; - this.mode_ = 'rollUp'; - break; - case ROLL_UP_4_ROWS: - this.topRow_ = BOTTOM_ROW - 3; - this.mode_ = 'rollUp'; - break; - case CARRIAGE_RETURN: - this.flushDisplayed(packet.pts); - this.shiftRowsUp_(); - this.startPts_ = packet.pts; - break; - - case BACKSPACE: - if (this.mode_ === 'popOn') { - this.nonDisplayed_[BOTTOM_ROW] = this.nonDisplayed_[BOTTOM_ROW].slice(0, -1); - } else { - this.displayed_[BOTTOM_ROW] = this.displayed_[BOTTOM_ROW].slice(0, -1); - } - break; - case ERASE_DISPLAYED_MEMORY: - this.flushDisplayed(packet.pts); - this.displayed_ = createDisplayBuffer(); - break; - case ERASE_NON_DISPLAYED_MEMORY: - this.nonDisplayed_ = createDisplayBuffer(); - break; - default: - char0 = data >>> 8; - char1 = data & 0xff; - - // Look for a Channel 1 Preamble Address Code - if (char0 >= 0x10 && char0 <= 0x17 && - char1 >= 0x40 && char1 <= 0x7F && - (char0 !== 0x10 || char1 < 0x60)) { - // Follow Safari's lead and replace the PAC with a space - char0 = 0x20; - // we only want one space so make the second character null - // which will get become '' in getCharFromCode - char1 = null; - } - - // Look for special character sets - if ((char0 === 0x11 || char0 === 0x19) && - (char1 >= 0x30 && char1 <= 0x3F)) { - // Put in eigth note and space - char0 = 0xE299AA; - char1 = ''; - } - - // ignore unsupported control codes - if ((char0 & 0xf0) === 0x10) { - return; - } - - // character handling is dependent on the current mode - this[this.mode_](packet.pts, char0, char1); - break; - } - }; -}; -Cea608Stream.prototype = new Stream(); -// Trigger a cue point that captures the current state of the -// display buffer -Cea608Stream.prototype.flushDisplayed = function(pts) { - var row, i; - - for (i = 0; i < this.displayed_.length; i++) { - row = this.displayed_[i]; - if (row.length) { - this.trigger('data', { - startPts: this.startPts_, - endPts: pts, - // remove spaces from the start and end of the string - text: row.trim() - }); - } - } -}; - -// Mode Implementations -Cea608Stream.prototype.popOn = function(pts, char0, char1) { - var baseRow = this.nonDisplayed_[BOTTOM_ROW]; - - // buffer characters - baseRow += getCharFromCode(char0); - baseRow += getCharFromCode(char1); - this.nonDisplayed_[BOTTOM_ROW] = baseRow; -}; - -Cea608Stream.prototype.rollUp = function(pts, char0, char1) { - var baseRow = this.displayed_[BOTTOM_ROW]; - if (baseRow === '') { - // we're starting to buffer new display input, so flush out the - // current display - this.flushDisplayed(pts); - - this.startPts_ = pts; - } - - baseRow += getCharFromCode(char0); - baseRow += getCharFromCode(char1); - - this.displayed_[BOTTOM_ROW] = baseRow; -}; -Cea608Stream.prototype.shiftRowsUp_ = function() { - var i; - // clear out inactive rows - for (i = 0; i < this.topRow_; i++) { - this.displayed_[i] = ''; - } - // shift displayed rows up - for (i = this.topRow_; i < BOTTOM_ROW; i++) { - this.displayed_[i] = this.displayed_[i + 1]; - } - // clear out the bottom row - this.displayed_[BOTTOM_ROW] = ''; -}; - -// exports -module.exports = { - CaptionStream: CaptionStream, - Cea608Stream: Cea608Stream, -}; - - -},{"../utils/stream":49}],39:[function(require,module,exports){ -module.exports = require('./m2ts'); - -},{"./m2ts":40}],40:[function(require,module,exports){ -/** - * mux.js - * - * Copyright (c) 2015 Brightcove - * All rights reserved. - * - * A stream-based mp2t to mp4 converter. This utility can be used to - * deliver mp4s to a SourceBuffer on platforms that support native - * Media Source Extensions. - */ -'use strict'; -var Stream = require('../utils/stream.js'), - CaptionStream = require('./caption-stream'), - StreamTypes = require('./stream-types'); - -var Stream = require('../utils/stream.js'); -var m2tsStreamTypes = require('./stream-types.js'); - -// object types -var - TransportPacketStream, TransportParseStream, ElementaryStream, - AacStream, H264Stream, NalByteStream; - -// constants -var - MP2T_PACKET_LENGTH = 188, // bytes - SYNC_BYTE = 0x47, - -/** - * Splits an incoming stream of binary data into MPEG-2 Transport - * Stream packets. - */ -TransportPacketStream = function() { - var - buffer = new Uint8Array(MP2T_PACKET_LENGTH), - bytesInBuffer = 0; - - TransportPacketStream.prototype.init.call(this); - - // Deliver new bytes to the stream. - - this.push = function(bytes) { - var - i = 0, - startIndex = 0, - endIndex = MP2T_PACKET_LENGTH, - everything; - - // If there are bytes remaining from the last segment, prepend them to the - // bytes that were pushed in - if (bytesInBuffer) { - everything = new Uint8Array(bytes.byteLength + bytesInBuffer); - everything.set(buffer.subarray(0, bytesInBuffer)); - everything.set(bytes, bytesInBuffer); - bytesInBuffer = 0; - } else { - everything = bytes; - } - - // While we have enough data for a packet - while (endIndex < everything.byteLength) { - // Look for a pair of start and end sync bytes in the data.. - if (everything[startIndex] === SYNC_BYTE && everything[endIndex] === SYNC_BYTE) { - // We found a packet so emit it and jump one whole packet forward in - // the stream - this.trigger('data', everything.subarray(startIndex, endIndex)); - startIndex += MP2T_PACKET_LENGTH; - endIndex += MP2T_PACKET_LENGTH; - continue; - } - // If we get here, we have somehow become de-synchronized and we need to step - // forward one byte at a time until we find a pair of sync bytes that denote - // a packet - startIndex++; - endIndex++; - } - - // If there was some data left over at the end of the segment that couldn't - // possibly be a whole packet, keep it because it might be the start of a packet - // that continues in the next segment - if (startIndex < everything.byteLength) { - buffer.set(everything.subarray(startIndex), 0); - bytesInBuffer = everything.byteLength - startIndex; - } - }; - - this.flush = function () { - // If the buffer contains a whole packet when we are being flushed, emit it - // and empty the buffer. Otherwise hold onto the data because it may be - // important for decoding the next segment - if (bytesInBuffer === MP2T_PACKET_LENGTH && buffer[0] === SYNC_BYTE) { - this.trigger('data', buffer); - bytesInBuffer = 0; - } - this.trigger('done'); - }; -}; -TransportPacketStream.prototype = new Stream(); - -/** - * Accepts an MP2T TransportPacketStream and emits data events with parsed - * forms of the individual transport stream packets. - */ -TransportParseStream = function() { - var parsePsi, parsePat, parsePmt, parsePes, self; - TransportParseStream.prototype.init.call(this); - self = this; - - this.packetsWaitingForPmt = []; - this.programMapTable = undefined; - - parsePsi = function(payload, psi) { - var offset = 0; - - // PSI packets may be split into multiple sections and those - // sections may be split into multiple packets. If a PSI - // section starts in this packet, the payload_unit_start_indicator - // will be true and the first byte of the payload will indicate - // the offset from the current position to the start of the - // section. - if (psi.payloadUnitStartIndicator) { - offset += payload[offset] + 1; - } - - if (psi.type === 'pat') { - parsePat(payload.subarray(offset), psi); - } else { - parsePmt(payload.subarray(offset), psi); - } - }; - - parsePat = function(payload, pat) { - pat.section_number = payload[7]; - pat.last_section_number = payload[8]; - - // skip the PSI header and parse the first PMT entry - self.pmtPid = (payload[10] & 0x1F) << 8 | payload[11]; - pat.pmtPid = self.pmtPid; - }; - - /** - * Parse out the relevant fields of a Program Map Table (PMT). - * @param payload {Uint8Array} the PMT-specific portion of an MP2T - * packet. The first byte in this array should be the table_id - * field. - * @param pmt {object} the object that should be decorated with - * fields parsed from the PMT. - */ - parsePmt = function(payload, pmt) { - var sectionLength, tableEnd, programInfoLength, offset; - - // PMTs can be sent ahead of the time when they should actually - // take effect. We don't believe this should ever be the case - // for HLS but we'll ignore "forward" PMT declarations if we see - // them. Future PMT declarations have the current_next_indicator - // set to zero. - if (!(payload[5] & 0x01)) { - return; - } - - // overwrite any existing program map table - self.programMapTable = {}; - - // the mapping table ends at the end of the current section - sectionLength = (payload[1] & 0x0f) << 8 | payload[2]; - tableEnd = 3 + sectionLength - 4; - - // to determine where the table is, we have to figure out how - // long the program info descriptors are - programInfoLength = (payload[10] & 0x0f) << 8 | payload[11]; - - // advance the offset to the first entry in the mapping table - offset = 12 + programInfoLength; - while (offset < tableEnd) { - // add an entry that maps the elementary_pid to the stream_type - self.programMapTable[(payload[offset + 1] & 0x1F) << 8 | payload[offset + 2]] = payload[offset]; - - // move to the next table entry - // skip past the elementary stream descriptors, if present - offset += ((payload[offset + 3] & 0x0F) << 8 | payload[offset + 4]) + 5; - } - - // record the map on the packet as well - pmt.programMapTable = self.programMapTable; - - // if there are any packets waiting for a PMT to be found, process them now - while (self.packetsWaitingForPmt.length) { - self.processPes_.apply(self, self.packetsWaitingForPmt.shift()); - } - }; - - /** - * Deliver a new MP2T packet to the stream. - */ - this.push = function(packet) { - var - result = {}, - offset = 4; - - result.payloadUnitStartIndicator = !!(packet[1] & 0x40); - - // pid is a 13-bit field starting at the last bit of packet[1] - result.pid = packet[1] & 0x1f; - result.pid <<= 8; - result.pid |= packet[2]; - - // if an adaption field is present, its length is specified by the - // fifth byte of the TS packet header. The adaptation field is - // used to add stuffing to PES packets that don't fill a complete - // TS packet, and to specify some forms of timing and control data - // that we do not currently use. - if (((packet[3] & 0x30) >>> 4) > 0x01) { - offset += packet[offset] + 1; - } - - // parse the rest of the packet based on the type - if (result.pid === 0) { - result.type = 'pat'; - parsePsi(packet.subarray(offset), result); - this.trigger('data', result); - } else if (result.pid === this.pmtPid) { - result.type = 'pmt'; - parsePsi(packet.subarray(offset), result); - this.trigger('data', result); - } else if (this.programMapTable === undefined) { - // When we have not seen a PMT yet, defer further processing of - // PES packets until one has been parsed - this.packetsWaitingForPmt.push([packet, offset, result]); - } else { - this.processPes_(packet, offset, result); - } - }; - - this.processPes_ = function (packet, offset, result) { - result.streamType = this.programMapTable[result.pid]; - result.type = 'pes'; - result.data = packet.subarray(offset); - - this.trigger('data', result); - }; - -}; -TransportParseStream.prototype = new Stream(); -TransportParseStream.STREAM_TYPES = { - h264: 0x1b, - adts: 0x0f -}; - -/** - * Reconsistutes program elementary stream (PES) packets from parsed - * transport stream packets. That is, if you pipe an - * mp2t.TransportParseStream into a mp2t.ElementaryStream, the output - * events will be events which capture the bytes for individual PES - * packets plus relevant metadata that has been extracted from the - * container. - */ -ElementaryStream = function() { - var - // PES packet fragments - video = { - data: [], - size: 0 - }, - audio = { - data: [], - size: 0 - }, - timedMetadata = { - data: [], - size: 0 - }, - parsePes = function(payload, pes) { - var ptsDtsFlags; - - // find out if this packets starts a new keyframe - pes.dataAlignmentIndicator = (payload[6] & 0x04) !== 0; - // PES packets may be annotated with a PTS value, or a PTS value - // and a DTS value. Determine what combination of values is - // available to work with. - ptsDtsFlags = payload[7]; - - // PTS and DTS are normally stored as a 33-bit number. Javascript - // performs all bitwise operations on 32-bit integers but javascript - // supports a much greater range (52-bits) of integer using standard - // mathematical operations. - // We construct a 31-bit value using bitwise operators over the 31 - // most significant bits and then multiply by 4 (equal to a left-shift - // of 2) before we add the final 2 least significant bits of the - // timestamp (equal to an OR.) - if (ptsDtsFlags & 0xC0) { - // the PTS and DTS are not written out directly. For information - // on how they are encoded, see - // http://dvd.sourceforge.net/dvdinfo/pes-hdr.html - pes.pts = (payload[9] & 0x0E) << 27 - | (payload[10] & 0xFF) << 20 - | (payload[11] & 0xFE) << 12 - | (payload[12] & 0xFF) << 5 - | (payload[13] & 0xFE) >>> 3; - pes.pts *= 4; // Left shift by 2 - pes.pts += (payload[13] & 0x06) >>> 1; // OR by the two LSBs - pes.dts = pes.pts; - if (ptsDtsFlags & 0x40) { - pes.dts = (payload[14] & 0x0E ) << 27 - | (payload[15] & 0xFF ) << 20 - | (payload[16] & 0xFE ) << 12 - | (payload[17] & 0xFF ) << 5 - | (payload[18] & 0xFE ) >>> 3; - pes.dts *= 4; // Left shift by 2 - pes.dts += (payload[18] & 0x06) >>> 1; // OR by the two LSBs - } - } - - // the data section starts immediately after the PES header. - // pes_header_data_length specifies the number of header bytes - // that follow the last byte of the field. - pes.data = payload.subarray(9 + payload[8]); - }, - flushStream = function(stream, type) { - var - packetData = new Uint8Array(stream.size), - event = { - type: type - }, - i = 0, - fragment; - - // do nothing if there is no buffered data - if (!stream.data.length) { - return; - } - event.trackId = stream.data[0].pid; - - // reassemble the packet - while (stream.data.length) { - fragment = stream.data.shift(); - - packetData.set(fragment.data, i); - i += fragment.data.byteLength; - } - - // parse assembled packet's PES header - parsePes(packetData, event); - - stream.size = 0; - - self.trigger('data', event); - }, - self; - - ElementaryStream.prototype.init.call(this); - self = this; - - this.push = function(data) { - ({ - pat: function() { - // we have to wait for the PMT to arrive as well before we - // have any meaningful metadata - }, - pes: function() { - var stream, streamType; - - switch (data.streamType) { - case StreamTypes.H264_STREAM_TYPE: - case m2tsStreamTypes.H264_STREAM_TYPE: - stream = video; - streamType = 'video'; - break; - case StreamTypes.ADTS_STREAM_TYPE: - stream = audio; - streamType = 'audio'; - break; - case StreamTypes.METADATA_STREAM_TYPE: - stream = timedMetadata; - streamType = 'timed-metadata'; - break; - default: - // ignore unknown stream types - return; - } - - // if a new packet is starting, we can flush the completed - // packet - if (data.payloadUnitStartIndicator) { - flushStream(stream, streamType); - } - - // buffer this fragment until we are sure we've received the - // complete payload - stream.data.push(data); - stream.size += data.data.byteLength; - }, - pmt: function() { - var - event = { - type: 'metadata', - tracks: [] - }, - programMapTable = data.programMapTable, - k, - track; - - // translate streams to tracks - for (k in programMapTable) { - if (programMapTable.hasOwnProperty(k)) { - track = { - timelineStartInfo: { - baseMediaDecodeTime: 0 - } - }; - track.id = +k; - if (programMapTable[k] === m2tsStreamTypes.H264_STREAM_TYPE) { - track.codec = 'avc'; - track.type = 'video'; - } else if (programMapTable[k] === m2tsStreamTypes.ADTS_STREAM_TYPE) { - track.codec = 'adts'; - track.type = 'audio'; - } - event.tracks.push(track); - } - } - self.trigger('data', event); - } - })[data.type](); - }; - - /** - * Flush any remaining input. Video PES packets may be of variable - * length. Normally, the start of a new video packet can trigger the - * finalization of the previous packet. That is not possible if no - * more video is forthcoming, however. In that case, some other - * mechanism (like the end of the file) has to be employed. When it is - * clear that no additional data is forthcoming, calling this method - * will flush the buffered packets. - */ - this.flush = function() { - // !!THIS ORDER IS IMPORTANT!! - // video first then audio - flushStream(video, 'video'); - flushStream(audio, 'audio'); - flushStream(timedMetadata, 'timed-metadata'); - this.trigger('done'); - }; -}; -ElementaryStream.prototype = new Stream(); - -var m2ts = { - PAT_PID: 0x0000, - MP2T_PACKET_LENGTH: MP2T_PACKET_LENGTH, - TransportPacketStream: TransportPacketStream, - TransportParseStream: TransportParseStream, - ElementaryStream: ElementaryStream, - CaptionStream: CaptionStream.CaptionStream, - Cea608Stream: CaptionStream.Cea608Stream, - MetadataStream: require('./metadata-stream'), -}; - -for (var type in StreamTypes) { - if (StreamTypes.hasOwnProperty(type)) { - m2ts[type] = StreamTypes[type]; - } -} - -module.exports = m2ts; - -},{"../utils/stream.js":49,"./caption-stream":38,"./metadata-stream":41,"./stream-types":42,"./stream-types.js":42}],41:[function(require,module,exports){ -/** - * Accepts program elementary stream (PES) data events and parses out - * ID3 metadata from them, if present. - * @see http://id3.org/id3v2.3.0 - */ -'use strict'; -var - Stream = require('../utils/stream'), - StreamTypes = require('./stream-types'), - // return a percent-encoded representation of the specified byte range - // @see http://en.wikipedia.org/wiki/Percent-encoding - percentEncode = function(bytes, start, end) { - var i, result = ''; - for (i = start; i < end; i++) { - result += '%' + ('00' + bytes[i].toString(16)).slice(-2); - } - return result; - }, - // return the string representation of the specified byte range, - // interpreted as UTf-8. - parseUtf8 = function(bytes, start, end) { - return decodeURIComponent(percentEncode(bytes, start, end)); - }, - // return the string representation of the specified byte range, - // interpreted as ISO-8859-1. - parseIso88591 = function(bytes, start, end) { - return unescape(percentEncode(bytes, start, end)); // jshint ignore:line - }, - parseSyncSafeInteger = function (data) { - return (data[0] << 21) | - (data[1] << 14) | - (data[2] << 7) | - (data[3]); - }, - tagParsers = { - 'TXXX': function(tag) { - var i; - if (tag.data[0] !== 3) { - // ignore frames with unrecognized character encodings - return; - } - - for (i = 1; i < tag.data.length; i++) { - if (tag.data[i] === 0) { - // parse the text fields - tag.description = parseUtf8(tag.data, 1, i); - // do not include the null terminator in the tag value - tag.value = parseUtf8(tag.data, i + 1, tag.data.length - 1); - break; - } - } - tag.data = tag.value; - }, - 'WXXX': function(tag) { - var i; - if (tag.data[0] !== 3) { - // ignore frames with unrecognized character encodings - return; - } - - for (i = 1; i < tag.data.length; i++) { - if (tag.data[i] === 0) { - // parse the description and URL fields - tag.description = parseUtf8(tag.data, 1, i); - tag.url = parseUtf8(tag.data, i + 1, tag.data.length); - break; - } - } - }, - 'PRIV': function(tag) { - var i; - - for (i = 0; i < tag.data.length; i++) { - if (tag.data[i] === 0) { - // parse the description and URL fields - tag.owner = parseIso88591(tag.data, 0, i); - break; - } - } - tag.privateData = tag.data.subarray(i + 1); - tag.data = tag.privateData; - } - }, - MetadataStream; - -MetadataStream = function(options) { - var - settings = { - debug: !!(options && options.debug), - - // the bytes of the program-level descriptor field in MP2T - // see ISO/IEC 13818-1:2013 (E), section 2.6 "Program and - // program element descriptors" - descriptor: options && options.descriptor - }, - // the total size in bytes of the ID3 tag being parsed - tagSize = 0, - // tag data that is not complete enough to be parsed - buffer = [], - // the total number of bytes currently in the buffer - bufferSize = 0, - i; - - MetadataStream.prototype.init.call(this); - - // calculate the text track in-band metadata track dispatch type - // https://html.spec.whatwg.org/multipage/embedded-content.html#steps-to-expose-a-media-resource-specific-text-track - this.dispatchType = StreamTypes.METADATA_STREAM_TYPE.toString(16); - if (settings.descriptor) { - for (i = 0; i < settings.descriptor.length; i++) { - this.dispatchType += ('00' + settings.descriptor[i].toString(16)).slice(-2); - } - } - - this.push = function(chunk) { - var tag, frameStart, frameSize, frame, i, frameHeader; - if (chunk.type !== 'timed-metadata') { - return; - } - - // if data_alignment_indicator is set in the PES header, - // we must have the start of a new ID3 tag. Assume anything - // remaining in the buffer was malformed and throw it out - if (chunk.dataAlignmentIndicator) { - bufferSize = 0; - buffer.length = 0; - } - - // ignore events that don't look like ID3 data - 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))) { - if (settings.debug) { - console.log('Skipping unrecognized metadata packet'); - } - return; - } - - // add this chunk to the data we've collected so far - - buffer.push(chunk); - bufferSize += chunk.data.byteLength; - - // grab the size of the entire frame from the ID3 header - if (buffer.length === 1) { - // the frame size is transmitted as a 28-bit integer in the - // last four bytes of the ID3 header. - // The most significant bit of each byte is dropped and the - // results concatenated to recover the actual value. - tagSize = parseSyncSafeInteger(chunk.data.subarray(6, 10)); - - // ID3 reports the tag size excluding the header but it's more - // convenient for our comparisons to include it - tagSize += 10; - } - - // if the entire frame has not arrived, wait for more data - if (bufferSize < tagSize) { - return; - } - - // collect the entire frame so it can be parsed - tag = { - data: new Uint8Array(tagSize), - frames: [], - pts: buffer[0].pts, - dts: buffer[0].dts - }; - for (i = 0; i < tagSize;) { - tag.data.set(buffer[0].data.subarray(0, tagSize - i), i); - i += buffer[0].data.byteLength; - bufferSize -= buffer[0].data.byteLength; - buffer.shift(); - } - - // find the start of the first frame and the end of the tag - frameStart = 10; - if (tag.data[5] & 0x40) { - // advance the frame start past the extended header - frameStart += 4; // header size field - frameStart += parseSyncSafeInteger(tag.data.subarray(10, 14)); - - // clip any padding off the end - tagSize -= parseSyncSafeInteger(tag.data.subarray(16, 20)); - } - - // parse one or more ID3 frames - // http://id3.org/id3v2.3.0#ID3v2_frame_overview - do { - // determine the number of bytes in this frame - frameSize = parseSyncSafeInteger(tag.data.subarray(frameStart + 4, frameStart + 8)); - if (frameSize < 1) { - return console.log('Malformed ID3 frame encountered. Skipping metadata parsing.'); - } - frameHeader = String.fromCharCode(tag.data[frameStart], - tag.data[frameStart + 1], - tag.data[frameStart + 2], - tag.data[frameStart + 3]); - - - frame = { - id: frameHeader, - data: tag.data.subarray(frameStart + 10, frameStart + frameSize + 10) - }; - frame.key = frame.id; - if (tagParsers[frame.id]) { - tagParsers[frame.id](frame); - if (frame.owner === 'com.apple.streaming.transportStreamTimestamp') { - var - d = frame.data, - size = ((d[3] & 0x01) << 30) | - (d[4] << 22) | - (d[5] << 14) | - (d[6] << 6) | - (d[7] >>> 2); - - size *= 4; - size += d[7] & 0x03; - frame.timeStamp = size; - this.trigger('timestamp', frame); - } - } - tag.frames.push(frame); - - frameStart += 10; // advance past the frame header - frameStart += frameSize; // advance past the frame body - } while (frameStart < tagSize); - this.trigger('data', tag); - }; -}; -MetadataStream.prototype = new Stream(); - -module.exports = MetadataStream; - -},{"../utils/stream":49,"./stream-types":42}],42:[function(require,module,exports){ -'use strict'; - -module.exports = { - H264_STREAM_TYPE: 0x1B, - ADTS_STREAM_TYPE: 0x0F, - METADATA_STREAM_TYPE: 0x15 -}; - -},{}],43:[function(require,module,exports){ -module.exports = { - generator: require('./mp4-generator'), - Transmuxer: require('./transmuxer').Transmuxer, - AudioSegmentStream: require('./transmuxer').AudioSegmentStream, - VideoSegmentStream: require('./transmuxer').VideoSegmentStream, - tools: require('../tools/mp4-inspector'), -}; - -},{"../tools/mp4-inspector":47,"./mp4-generator":44,"./transmuxer":45}],44:[function(require,module,exports){ -/** - * mux.js - * - * Copyright (c) 2015 Brightcove - * All rights reserved. - * - * Functions that generate fragmented MP4s suitable for use with Media - * Source Extensions. - */ -'use strict'; - -var box, dinf, esds, ftyp, mdat, mfhd, minf, moof, moov, mvex, mvhd, trak, - tkhd, mdia, mdhd, hdlr, sdtp, stbl, stsd, styp, traf, trex, trun, - types, MAJOR_BRAND, MINOR_VERSION, AVC1_BRAND, VIDEO_HDLR, - AUDIO_HDLR, HDLR_TYPES, VMHD, SMHD, DREF, STCO, STSC, STSZ, STTS; - -// pre-calculate constants -(function() { - var i; - types = { - avc1: [], // codingname - avcC: [], - btrt: [], - dinf: [], - dref: [], - esds: [], - ftyp: [], - hdlr: [], - mdat: [], - mdhd: [], - mdia: [], - mfhd: [], - minf: [], - moof: [], - moov: [], - mp4a: [], // codingname - mvex: [], - mvhd: [], - sdtp: [], - smhd: [], - stbl: [], - stco: [], - stsc: [], - stsd: [], - stsz: [], - stts: [], - styp: [], - tfdt: [], - tfhd: [], - traf: [], - trak: [], - trun: [], - trex: [], - tkhd: [], - vmhd: [] - }; - - for (i in types) { - if (types.hasOwnProperty(i)) { - types[i] = [ - i.charCodeAt(0), - i.charCodeAt(1), - i.charCodeAt(2), - i.charCodeAt(3) - ]; - } - } - - MAJOR_BRAND = new Uint8Array([ - 'i'.charCodeAt(0), - 's'.charCodeAt(0), - 'o'.charCodeAt(0), - 'm'.charCodeAt(0) - ]); - AVC1_BRAND = new Uint8Array([ - 'a'.charCodeAt(0), - 'v'.charCodeAt(0), - 'c'.charCodeAt(0), - '1'.charCodeAt(0) - ]); - MINOR_VERSION = new Uint8Array([0, 0, 0, 1]); - VIDEO_HDLR = new Uint8Array([ - 0x00, // version 0 - 0x00, 0x00, 0x00, // flags - 0x00, 0x00, 0x00, 0x00, // pre_defined - 0x76, 0x69, 0x64, 0x65, // handler_type: 'vide' - 0x00, 0x00, 0x00, 0x00, // reserved - 0x00, 0x00, 0x00, 0x00, // reserved - 0x00, 0x00, 0x00, 0x00, // reserved - 0x56, 0x69, 0x64, 0x65, - 0x6f, 0x48, 0x61, 0x6e, - 0x64, 0x6c, 0x65, 0x72, 0x00 // name: 'VideoHandler' - ]); - AUDIO_HDLR = new Uint8Array([ - 0x00, // version 0 - 0x00, 0x00, 0x00, // flags - 0x00, 0x00, 0x00, 0x00, // pre_defined - 0x73, 0x6f, 0x75, 0x6e, // handler_type: 'soun' - 0x00, 0x00, 0x00, 0x00, // reserved - 0x00, 0x00, 0x00, 0x00, // reserved - 0x00, 0x00, 0x00, 0x00, // reserved - 0x53, 0x6f, 0x75, 0x6e, - 0x64, 0x48, 0x61, 0x6e, - 0x64, 0x6c, 0x65, 0x72, 0x00 // name: 'SoundHandler' - ]); - HDLR_TYPES = { - "video":VIDEO_HDLR, - "audio": AUDIO_HDLR - }; - DREF = new Uint8Array([ - 0x00, // version 0 - 0x00, 0x00, 0x00, // flags - 0x00, 0x00, 0x00, 0x01, // entry_count - 0x00, 0x00, 0x00, 0x0c, // entry_size - 0x75, 0x72, 0x6c, 0x20, // 'url' type - 0x00, // version 0 - 0x00, 0x00, 0x01 // entry_flags - ]); - SMHD = new Uint8Array([ - 0x00, // version - 0x00, 0x00, 0x00, // flags - 0x00, 0x00, // balance, 0 means centered - 0x00, 0x00 // reserved - ]); - STCO = new Uint8Array([ - 0x00, // version - 0x00, 0x00, 0x00, // flags - 0x00, 0x00, 0x00, 0x00 // entry_count - ]); - STSC = STCO; - STSZ = new Uint8Array([ - 0x00, // version - 0x00, 0x00, 0x00, // flags - 0x00, 0x00, 0x00, 0x00, // sample_size - 0x00, 0x00, 0x00, 0x00, // sample_count - ]); - STTS = STCO; - VMHD = new Uint8Array([ - 0x00, // version - 0x00, 0x00, 0x01, // flags - 0x00, 0x00, // graphicsmode - 0x00, 0x00, - 0x00, 0x00, - 0x00, 0x00 // opcolor - ]); -})(); - -box = function(type) { - var - payload = [], - size = 0, - i, - result, - view; - - for (i = 1; i < arguments.length; i++) { - payload.push(arguments[i]); - } - - i = payload.length; - - // calculate the total size we need to allocate - while (i--) { - size += payload[i].byteLength; - } - result = new Uint8Array(size + 8); - view = new DataView(result.buffer, result.byteOffset, result.byteLength); - view.setUint32(0, result.byteLength); - result.set(type, 4); - - // copy the payload into the result - for (i = 0, size = 8; i < payload.length; i++) { - result.set(payload[i], size); - size += payload[i].byteLength; - } - return result; -}; - -dinf = function() { - return box(types.dinf, box(types.dref, DREF)); -}; - -esds = function(track) { - return box(types.esds, new Uint8Array([ - 0x00, // version - 0x00, 0x00, 0x00, // flags - - // ES_Descriptor - 0x03, // tag, ES_DescrTag - 0x19, // length - 0x00, 0x00, // ES_ID - 0x00, // streamDependenceFlag, URL_flag, reserved, streamPriority - - // DecoderConfigDescriptor - 0x04, // tag, DecoderConfigDescrTag - 0x11, // length - 0x40, // object type - 0x15, // streamType - 0x00, 0x06, 0x00, // bufferSizeDB - 0x00, 0x00, 0xda, 0xc0, // maxBitrate - 0x00, 0x00, 0xda, 0xc0, // avgBitrate - - // DecoderSpecificInfo - 0x05, // tag, DecoderSpecificInfoTag - 0x02, // length - // ISO/IEC 14496-3, AudioSpecificConfig - // for samplingFrequencyIndex see ISO/IEC 13818-7:2006, 8.1.3.2.2, Table 35 - (track.audioobjecttype << 3) | (track.samplingfrequencyindex >>> 1), - (track.samplingfrequencyindex << 7) | (track.channelcount << 3), - 0x06, 0x01, 0x02 // GASpecificConfig - ])); -}; - -ftyp = function() { - return box(types.ftyp, MAJOR_BRAND, MINOR_VERSION, MAJOR_BRAND, AVC1_BRAND); -}; - -hdlr = function(type) { - return box(types.hdlr, HDLR_TYPES[type]); -}; -mdat = function(data) { - return box(types.mdat, data); -}; -mdhd = function(track) { - var result = new Uint8Array([ - 0x00, // version 0 - 0x00, 0x00, 0x00, // flags - 0x00, 0x00, 0x00, 0x02, // creation_time - 0x00, 0x00, 0x00, 0x03, // modification_time - 0x00, 0x01, 0x5f, 0x90, // timescale, 90,000 "ticks" per second - - (track.duration >>> 24) & 0xFF, - (track.duration >>> 16) & 0xFF, - (track.duration >>> 8) & 0xFF, - track.duration & 0xFF, // duration - 0x55, 0xc4, // 'und' language (undetermined) - 0x00, 0x00 - ]); - - // Use the sample rate from the track metadata, when it is - // defined. The sample rate can be parsed out of an ADTS header, for - // instance. - if (track.samplerate) { - result[12] = (track.samplerate >>> 24) & 0xFF; - result[13] = (track.samplerate >>> 16) & 0xFF; - result[14] = (track.samplerate >>> 8) & 0xFF; - result[15] = (track.samplerate) & 0xFF; - } - - return box(types.mdhd, result); -}; -mdia = function(track) { - return box(types.mdia, mdhd(track), hdlr(track.type), minf(track)); -}; -mfhd = function(sequenceNumber) { - return box(types.mfhd, new Uint8Array([ - 0x00, - 0x00, 0x00, 0x00, // flags - (sequenceNumber & 0xFF000000) >> 24, - (sequenceNumber & 0xFF0000) >> 16, - (sequenceNumber & 0xFF00) >> 8, - sequenceNumber & 0xFF, // sequence_number - ])); -}; -minf = function(track) { - return box(types.minf, - track.type === 'video' ? box(types.vmhd, VMHD) : box(types.smhd, SMHD), - dinf(), - stbl(track)); -}; -moof = function(sequenceNumber, tracks) { - var - trackFragments = [], - i = tracks.length; - // build traf boxes for each track fragment - while (i--) { - trackFragments[i] = traf(tracks[i]); - } - return box.apply(null, [ - types.moof, - mfhd(sequenceNumber) - ].concat(trackFragments)); -}; -/** - * Returns a movie box. - * @param tracks {array} the tracks associated with this movie - * @see ISO/IEC 14496-12:2012(E), section 8.2.1 - */ -moov = function(tracks) { - var - i = tracks.length, - boxes = []; - - while (i--) { - boxes[i] = trak(tracks[i]); - } - - return box.apply(null, [types.moov, mvhd(0xffffffff)].concat(boxes).concat(mvex(tracks))); -}; -mvex = function(tracks) { - var - i = tracks.length, - boxes = []; - - while (i--) { - boxes[i] = trex(tracks[i]); - } - return box.apply(null, [types.mvex].concat(boxes)); -}; -mvhd = function(duration) { - var - bytes = new Uint8Array([ - 0x00, // version 0 - 0x00, 0x00, 0x00, // flags - 0x00, 0x00, 0x00, 0x01, // creation_time - 0x00, 0x00, 0x00, 0x02, // modification_time - 0x00, 0x01, 0x5f, 0x90, // timescale, 90,000 "ticks" per second - (duration & 0xFF000000) >> 24, - (duration & 0xFF0000) >> 16, - (duration & 0xFF00) >> 8, - duration & 0xFF, // duration - 0x00, 0x01, 0x00, 0x00, // 1.0 rate - 0x01, 0x00, // 1.0 volume - 0x00, 0x00, // reserved - 0x00, 0x00, 0x00, 0x00, // reserved - 0x00, 0x00, 0x00, 0x00, // reserved - 0x00, 0x01, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x01, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x40, 0x00, 0x00, 0x00, // transformation: unity matrix - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, // pre_defined - 0xff, 0xff, 0xff, 0xff // next_track_ID - ]); - return box(types.mvhd, bytes); -}; - -sdtp = function(track) { - var - samples = track.samples || [], - bytes = new Uint8Array(4 + samples.length), - flags, - i; - - // leave the full box header (4 bytes) all zero - - // write the sample table - for (i = 0; i < samples.length; i++) { - flags = samples[i].flags; - - bytes[i + 4] = (flags.dependsOn << 4) | - (flags.isDependedOn << 2) | - (flags.hasRedundancy); - } - - return box(types.sdtp, - bytes); -}; - -stbl = function(track) { - return box(types.stbl, - stsd(track), - box(types.stts, STTS), - box(types.stsc, STSC), - box(types.stsz, STSZ), - box(types.stco, STCO)); -}; - -(function() { - var videoSample, audioSample; - - stsd = function(track) { - - return box(types.stsd, new Uint8Array([ - 0x00, // version 0 - 0x00, 0x00, 0x00, // flags - 0x00, 0x00, 0x00, 0x01 - ]), track.type === 'video' ? videoSample(track) : audioSample(track)); - }; - - videoSample = function(track) { - var - sps = track.sps || [], - pps = track.pps || [], - sequenceParameterSets = [], - pictureParameterSets = [], - i; - - // assemble the SPSs - for (i = 0; i < sps.length; i++) { - sequenceParameterSets.push((sps[i].byteLength & 0xFF00) >>> 8); - sequenceParameterSets.push((sps[i].byteLength & 0xFF)); // sequenceParameterSetLength - sequenceParameterSets = sequenceParameterSets.concat(Array.prototype.slice.call(sps[i])); // SPS - } - - // assemble the PPSs - for (i = 0; i < pps.length; i++) { - pictureParameterSets.push((pps[i].byteLength & 0xFF00) >>> 8); - pictureParameterSets.push((pps[i].byteLength & 0xFF)); - pictureParameterSets = pictureParameterSets.concat(Array.prototype.slice.call(pps[i])); - } - - return box(types.avc1, new Uint8Array([ - 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, // reserved - 0x00, 0x01, // data_reference_index - 0x00, 0x00, // pre_defined - 0x00, 0x00, // reserved - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, // pre_defined - (track.width & 0xff00) >> 8, - track.width & 0xff, // width - (track.height & 0xff00) >> 8, - track.height & 0xff, // height - 0x00, 0x48, 0x00, 0x00, // horizresolution - 0x00, 0x48, 0x00, 0x00, // vertresolution - 0x00, 0x00, 0x00, 0x00, // reserved - 0x00, 0x01, // frame_count - 0x13, - 0x76, 0x69, 0x64, 0x65, - 0x6f, 0x6a, 0x73, 0x2d, - 0x63, 0x6f, 0x6e, 0x74, - 0x72, 0x69, 0x62, 0x2d, - 0x68, 0x6c, 0x73, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, // compressorname - 0x00, 0x18, // depth = 24 - 0x11, 0x11 // pre_defined = -1 - ]), box(types.avcC, new Uint8Array([ - 0x01, // configurationVersion - track.profileIdc, // AVCProfileIndication - track.profileCompatibility, // profile_compatibility - track.levelIdc, // AVCLevelIndication - 0xff // lengthSizeMinusOne, hard-coded to 4 bytes - ].concat([ - sps.length // numOfSequenceParameterSets - ]).concat(sequenceParameterSets).concat([ - pps.length // numOfPictureParameterSets - ]).concat(pictureParameterSets))), // "PPS" - box(types.btrt, new Uint8Array([ - 0x00, 0x1c, 0x9c, 0x80, // bufferSizeDB - 0x00, 0x2d, 0xc6, 0xc0, // maxBitrate - 0x00, 0x2d, 0xc6, 0xc0 - ])) // avgBitrate - ); - }; - - audioSample = function(track) { - return box(types.mp4a, new Uint8Array([ - - // SampleEntry, ISO/IEC 14496-12 - 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, // reserved - 0x00, 0x01, // data_reference_index - - // AudioSampleEntry, ISO/IEC 14496-12 - 0x00, 0x00, 0x00, 0x00, // reserved - 0x00, 0x00, 0x00, 0x00, // reserved - (track.channelcount & 0xff00) >> 8, - (track.channelcount & 0xff), // channelcount - - (track.samplesize & 0xff00) >> 8, - (track.samplesize & 0xff), // samplesize - 0x00, 0x00, // pre_defined - 0x00, 0x00, // reserved - - (track.samplerate & 0xff00) >> 8, - (track.samplerate & 0xff), - 0x00, 0x00 // samplerate, 16.16 - - // MP4AudioSampleEntry, ISO/IEC 14496-14 - ]), esds(track)); - }; -})(); - -styp = function() { - return box(types.styp, MAJOR_BRAND, MINOR_VERSION, MAJOR_BRAND); -}; - -tkhd = function(track) { - var result = new Uint8Array([ - 0x00, // version 0 - 0x00, 0x00, 0x07, // flags - 0x00, 0x00, 0x00, 0x00, // creation_time - 0x00, 0x00, 0x00, 0x00, // modification_time - (track.id & 0xFF000000) >> 24, - (track.id & 0xFF0000) >> 16, - (track.id & 0xFF00) >> 8, - track.id & 0xFF, // track_ID - 0x00, 0x00, 0x00, 0x00, // reserved - (track.duration & 0xFF000000) >> 24, - (track.duration & 0xFF0000) >> 16, - (track.duration & 0xFF00) >> 8, - track.duration & 0xFF, // duration - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, // reserved - 0x00, 0x00, // layer - 0x00, 0x00, // alternate_group - 0x01, 0x00, // non-audio track volume - 0x00, 0x00, // reserved - 0x00, 0x01, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x01, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x40, 0x00, 0x00, 0x00, // transformation: unity matrix - (track.width & 0xFF00) >> 8, - track.width & 0xFF, - 0x00, 0x00, // width - (track.height & 0xFF00) >> 8, - track.height & 0xFF, - 0x00, 0x00 // height - ]); - - return box(types.tkhd, result); -}; - -/** - * Generate a track fragment (traf) box. A traf box collects metadata - * about tracks in a movie fragment (moof) box. - */ -traf = function(track) { - var trackFragmentHeader, trackFragmentDecodeTime, - trackFragmentRun, sampleDependencyTable, dataOffset; - - trackFragmentHeader = box(types.tfhd, new Uint8Array([ - 0x00, // version 0 - 0x00, 0x00, 0x3a, // flags - (track.id & 0xFF000000) >> 24, - (track.id & 0xFF0000) >> 16, - (track.id & 0xFF00) >> 8, - (track.id & 0xFF), // track_ID - 0x00, 0x00, 0x00, 0x01, // sample_description_index - 0x00, 0x00, 0x00, 0x00, // default_sample_duration - 0x00, 0x00, 0x00, 0x00, // default_sample_size - 0x00, 0x00, 0x00, 0x00 // default_sample_flags - ])); - - trackFragmentDecodeTime = box(types.tfdt, new Uint8Array([ - 0x00, // version 0 - 0x00, 0x00, 0x00, // flags - // baseMediaDecodeTime - (track.baseMediaDecodeTime >>> 24) & 0xFF, - (track.baseMediaDecodeTime >>> 16) & 0xFF, - (track.baseMediaDecodeTime >>> 8) & 0xFF, - track.baseMediaDecodeTime & 0xFF - ])); - - // the data offset specifies the number of bytes from the start of - // the containing moof to the first payload byte of the associated - // mdat - dataOffset = (32 + // tfhd - 16 + // tfdt - 8 + // traf header - 16 + // mfhd - 8 + // moof header - 8); // mdat header - - // audio tracks require less metadata - if (track.type === 'audio') { - trackFragmentRun = trun(track, dataOffset); - return box(types.traf, - trackFragmentHeader, - trackFragmentDecodeTime, - trackFragmentRun); - } - - // video tracks should contain an independent and disposable samples - // box (sdtp) - // generate one and adjust offsets to match - sampleDependencyTable = sdtp(track); - trackFragmentRun = trun(track, - sampleDependencyTable.length + dataOffset); - return box(types.traf, - trackFragmentHeader, - trackFragmentDecodeTime, - trackFragmentRun, - sampleDependencyTable); -}; - -/** - * Generate a track box. - * @param track {object} a track definition - * @return {Uint8Array} the track box - */ -trak = function(track) { - track.duration = track.duration || 0xffffffff; - return box(types.trak, - tkhd(track), - mdia(track)); -}; - -trex = function(track) { - var result = new Uint8Array([ - 0x00, // version 0 - 0x00, 0x00, 0x00, // flags - (track.id & 0xFF000000) >> 24, - (track.id & 0xFF0000) >> 16, - (track.id & 0xFF00) >> 8, - (track.id & 0xFF), // track_ID - 0x00, 0x00, 0x00, 0x01, // default_sample_description_index - 0x00, 0x00, 0x00, 0x00, // default_sample_duration - 0x00, 0x00, 0x00, 0x00, // default_sample_size - 0x00, 0x01, 0x00, 0x01 // default_sample_flags - ]); - // the last two bytes of default_sample_flags is the sample - // degradation priority, a hint about the importance of this sample - // relative to others. Lower the degradation priority for all sample - // types other than video. - if (track.type !== 'video') { - result[result.length - 1] = 0x00; - } - - return box(types.trex, result); -}; - -(function() { - var audioTrun, videoTrun, trunHeader; - - // This method assumes all samples are uniform. That is, if a - // duration is present for the first sample, it will be present for - // all subsequent samples. - // see ISO/IEC 14496-12:2012, Section 8.8.8.1 - trunHeader = function(samples, offset) { - var durationPresent = 0, sizePresent = 0, - flagsPresent = 0, compositionTimeOffset = 0; - - // trun flag constants - if (samples.length) { - if (samples[0].duration !== undefined) { - durationPresent = 0x1; - } - if (samples[0].size !== undefined) { - sizePresent = 0x2; - } - if (samples[0].flags !== undefined) { - flagsPresent = 0x4; - } - if (samples[0].compositionTimeOffset !== undefined) { - compositionTimeOffset = 0x8; - } - } - - return [ - 0x00, // version 0 - 0x00, - durationPresent | sizePresent | flagsPresent | compositionTimeOffset, - 0x01, // flags - (samples.length & 0xFF000000) >>> 24, - (samples.length & 0xFF0000) >>> 16, - (samples.length & 0xFF00) >>> 8, - samples.length & 0xFF, // sample_count - (offset & 0xFF000000) >>> 24, - (offset & 0xFF0000) >>> 16, - (offset & 0xFF00) >>> 8, - offset & 0xFF // data_offset - ]; - }; - - videoTrun = function(track, offset) { - var bytes, samples, sample, i; - - samples = track.samples || []; - offset += 8 + 12 + (16 * samples.length); - - bytes = trunHeader(samples, offset); - - for (i = 0; i < samples.length; i++) { - sample = samples[i]; - bytes = bytes.concat([ - (sample.duration & 0xFF000000) >>> 24, - (sample.duration & 0xFF0000) >>> 16, - (sample.duration & 0xFF00) >>> 8, - sample.duration & 0xFF, // sample_duration - (sample.size & 0xFF000000) >>> 24, - (sample.size & 0xFF0000) >>> 16, - (sample.size & 0xFF00) >>> 8, - sample.size & 0xFF, // sample_size - (sample.flags.isLeading << 2) | sample.flags.dependsOn, - (sample.flags.isDependedOn << 6) | - (sample.flags.hasRedundancy << 4) | - (sample.flags.paddingValue << 1) | - sample.flags.isNonSyncSample, - sample.flags.degradationPriority & 0xF0 << 8, - sample.flags.degradationPriority & 0x0F, // sample_flags - (sample.compositionTimeOffset & 0xFF000000) >>> 24, - (sample.compositionTimeOffset & 0xFF0000) >>> 16, - (sample.compositionTimeOffset & 0xFF00) >>> 8, - sample.compositionTimeOffset & 0xFF // sample_composition_time_offset - ]); - } - return box(types.trun, new Uint8Array(bytes)); - }; - - audioTrun = function(track, offset) { - var bytes, samples, sample, i; - - samples = track.samples || []; - offset += 8 + 12 + (8 * samples.length); - - bytes = trunHeader(samples, offset); - - for (i = 0; i < samples.length; i++) { - sample = samples[i]; - bytes = bytes.concat([ - (sample.duration & 0xFF000000) >>> 24, - (sample.duration & 0xFF0000) >>> 16, - (sample.duration & 0xFF00) >>> 8, - sample.duration & 0xFF, // sample_duration - (sample.size & 0xFF000000) >>> 24, - (sample.size & 0xFF0000) >>> 16, - (sample.size & 0xFF00) >>> 8, - sample.size & 0xFF]); // sample_size - } - - return box(types.trun, new Uint8Array(bytes)); - }; - - trun = function(track, offset) { - if (track.type === 'audio') { - return audioTrun(track, offset); - } else { - return videoTrun(track, offset); - } - }; -})(); - -module.exports = { - ftyp: ftyp, - mdat: mdat, - moof: moof, - moov: moov, - initSegment: function(tracks) { - var - fileType = ftyp(), - movie = moov(tracks), - result; - - result = new Uint8Array(fileType.byteLength + movie.byteLength); - result.set(fileType); - result.set(movie, fileType.byteLength); - return result; - } -}; - -},{}],45:[function(require,module,exports){ -/** - * mux.js - * - * Copyright (c) 2015 Brightcove - * All rights reserved. - * - * A stream-based mp2t to mp4 converter. This utility can be used to - * deliver mp4s to a SourceBuffer on platforms that support native - * Media Source Extensions. - */ -'use strict'; - -var Stream = require('../utils/stream.js'); -var mp4 = require('./mp4-generator.js'); -var m2ts = require('../m2ts/m2ts.js'); -var AdtsStream = require('../codecs/adts.js'); -var H264Stream = require('../codecs/h264').H264Stream; -var AacStream = require('../aac'); - -// object types -var VideoSegmentStream, AudioSegmentStream, Transmuxer, CoalesceStream; - -// Helper functions -var - defaultSample, - collectDtsInfo, - clearDtsInfo, - calculateTrackBaseMediaDecodeTime, - arrayEquals, - sumFrameByteLengths; - -/** - * Default sample object - * see ISO/IEC 14496-12:2012, section 8.6.4.3 - */ -defaultSample = { - size: 0, - flags: { - isLeading: 0, - dependsOn: 1, - isDependedOn: 0, - hasRedundancy: 0, - degradationPriority: 0 - } -}; - -/** - * Compare two arrays (even typed) for same-ness - */ -arrayEquals = function(a, b) { - var - i; - - if (a.length !== b.length) { - return false; - } - - // compare the value of each element in the array - for (i = 0; i < a.length; i++) { - if (a[i] !== b[i]) { - return false; - } - } - - return true; -}; - -/** - * Sum the `byteLength` properties of the data in each AAC frame - */ -sumFrameByteLengths = function(array) { - var - i, - currentObj, - sum = 0; - - // sum the byteLength's all each nal unit in the frame - for (i = 0; i < array.length; i++) { - currentObj = array[i]; - sum += currentObj.data.byteLength; - } - - return sum; -}; - -/** - * Constructs a single-track, ISO BMFF media segment from AAC data - * events. The output of this stream can be fed to a SourceBuffer - * configured with a suitable initialization segment. - */ -AudioSegmentStream = function(track) { - var - adtsFrames = [], - sequenceNumber = 0, - earliestAllowedDts = 0; - - AudioSegmentStream.prototype.init.call(this); - - this.push = function(data) { - collectDtsInfo(track, data); - - if (track) { - track.audioobjecttype = data.audioobjecttype; - track.channelcount = data.channelcount; - track.samplerate = data.samplerate; - track.samplingfrequencyindex = data.samplingfrequencyindex; - track.samplesize = data.samplesize; - } - - // buffer audio data until end() is called - adtsFrames.push(data); - }; - - this.setEarliestDts = function(earliestDts) { - earliestAllowedDts = earliestDts - track.timelineStartInfo.baseMediaDecodeTime; - }; - - this.flush = function() { - var - frames, - moof, - mdat, - boxes; - - // return early if no audio data has been observed - if (adtsFrames.length === 0) { - this.trigger('done'); - return; - } - - frames = this.trimAdtsFramesByEarliestDts_(adtsFrames); - - // we have to build the index from byte locations to - // samples (that is, adts frames) in the audio data - track.samples = this.generateSampleTable_(frames); - - // concatenate the audio data to constuct the mdat - mdat = mp4.mdat(this.concatenateFrameData_(frames)); - - adtsFrames = []; - - calculateTrackBaseMediaDecodeTime(track); - moof = mp4.moof(sequenceNumber, [track]); - boxes = new Uint8Array(moof.byteLength + mdat.byteLength); - - // bump the sequence number for next time - sequenceNumber++; - - boxes.set(moof); - boxes.set(mdat, moof.byteLength); - - clearDtsInfo(track); - - this.trigger('data', {track: track, boxes: boxes}); - this.trigger('done'); - }; - - // If the audio segment extends before the earliest allowed dts - // value, remove AAC frames until starts at or after the earliest - // allowed DTS so that we don't end up with a negative baseMedia- - // DecodeTime for the audio track - this.trimAdtsFramesByEarliestDts_ = function(adtsFrames) { - if (track.minSegmentDts >= earliestAllowedDts) { - return adtsFrames; - } - - // We will need to recalculate the earliest segment Dts - track.minSegmentDts = Infinity; - - return adtsFrames.filter(function(currentFrame) { - // If this is an allowed frame, keep it and record it's Dts - if (currentFrame.dts >= earliestAllowedDts) { - track.minSegmentDts = Math.min(track.minSegmentDts, currentFrame.dts); - track.minSegmentPts = track.minSegmentDts; - return true; - } - // Otherwise, discard it - return false; - }); - }; - - // generate the track's raw mdat data from an array of frames - this.generateSampleTable_ = function(frames) { - var - i, - currentFrame, - samples = []; - - for (i = 0; i < frames.length; i++) { - currentFrame = frames[i]; - samples.push({ - size: currentFrame.data.byteLength, - duration: 1024 // For AAC audio, all samples contain 1024 samples - }); - } - return samples; - }; - - // generate the track's sample table from an array of frames - this.concatenateFrameData_ = function(frames) { - var - i, - currentFrame, - dataOffset = 0, - data = new Uint8Array(sumFrameByteLengths(frames)); - - for (i = 0; i < frames.length; i++) { - currentFrame = frames[i]; - - data.set(currentFrame.data, dataOffset); - dataOffset += currentFrame.data.byteLength; - } - return data; - }; -}; - -AudioSegmentStream.prototype = new Stream(); - -/** - * Constructs a single-track, ISO BMFF media segment from H264 data - * events. The output of this stream can be fed to a SourceBuffer - * configured with a suitable initialization segment. - * @param track {object} track metadata configuration - */ -VideoSegmentStream = function(track) { - var - sequenceNumber = 0, - nalUnits = [], - config, - pps; - - VideoSegmentStream.prototype.init.call(this); - - delete track.minPTS; - - this.gopCache_ = []; - - this.push = function(nalUnit) { - collectDtsInfo(track, nalUnit); - - // record the track config - if (nalUnit.nalUnitType === 'seq_parameter_set_rbsp' && - !config) { - config = nalUnit.config; - - track.width = config.width; - track.height = config.height; - track.sps = [nalUnit.data]; - track.profileIdc = config.profileIdc; - track.levelIdc = config.levelIdc; - track.profileCompatibility = config.profileCompatibility; - } - - if (nalUnit.nalUnitType === 'pic_parameter_set_rbsp' && - !pps) { - pps = nalUnit.data; - track.pps = [nalUnit.data]; - } - - // buffer video until flush() is called - nalUnits.push(nalUnit); - }; - - this.flush = function() { - var - frames, - gopForFusion, - gops, - moof, - mdat, - boxes; - - // Throw away nalUnits at the start of the byte stream until - // we find the first AUD - while (nalUnits.length) { - if (nalUnits[0].nalUnitType === 'access_unit_delimiter_rbsp') { - break; - } - nalUnits.shift(); - } - - // Return early if no video data has been observed - if (nalUnits.length === 0) { - this.resetStream_(); - this.trigger('done'); - return; - } - - // Organize the raw nal-units into arrays that represent - // higher-level constructs such as frames and gops - // (group-of-pictures) - frames = this.groupNalsIntoFrames_(nalUnits); - gops = this.groupFramesIntoGops_(frames); - - // If the first frame of this fragment is not a keyframe we have - // a problem since MSE (on Chrome) requires a leading keyframe. - // - // We have two approaches to repairing this situation: - // 1) GOP-FUSION: - // This is where we keep track of the GOPS (group-of-pictures) - // from previous fragments and attempt to find one that we can - // prepend to the current fragment in order to create a valid - // fragment. - // 2) KEYFRAME-PULLING: - // Here we search for the first keyframe in the fragment and - // throw away all the frames between the start of the fragment - // and that keyframe. We then extend the duration and pull the - // PTS of the keyframe forward so that it covers the time range - // of the frames that were disposed of. - // - // #1 is far prefereable over #2 which can cause "stuttering" but - // requires more things to be just right. - if (!gops[0][0].keyFrame) { - // Search for a gop for fusion from our gopCache - gopForFusion = this.getGopForFusion_(nalUnits[0], track); - - if (gopForFusion) { - gops.unshift(gopForFusion); - // Adjust Gops' metadata to account for the inclusion of the - // new gop at the beginning - gops.byteLength += gopForFusion.byteLength; - gops.nalCount += gopForFusion.nalCount; - gops.pts = gopForFusion.pts; - gops.dts = gopForFusion.dts; - gops.duration += gopForFusion.duration; - } else { - // If we didn't find a candidate gop fall back to keyrame-pulling - gops = this.extendFirstKeyFrame_(gops); - } - } - collectDtsInfo(track, gops); - - // First, we have to build the index from byte locations to - // samples (that is, frames) in the video data - track.samples = this.generateSampleTable_(gops); - - // Concatenate the video data and construct the mdat - mdat = mp4.mdat(this.concatenateNalData_(gops)); - - // save all the nals in the last GOP into the gop cache - this.gopCache_.unshift({ - gop: gops.pop(), - pps: track.pps, - sps: track.sps - }); - - // Keep a maximum of 6 GOPs in the cache - this.gopCache_.length = Math.min(6, this.gopCache_.length); - - // Clear nalUnits - nalUnits = []; - - calculateTrackBaseMediaDecodeTime(track); - - this.trigger('timelineStartInfo', track.timelineStartInfo); - - moof = mp4.moof(sequenceNumber, [track]); - - // it would be great to allocate this array up front instead of - // throwing away hundreds of media segment fragments - boxes = new Uint8Array(moof.byteLength + mdat.byteLength); - - // Bump the sequence number for next time - sequenceNumber++; - - boxes.set(moof); - boxes.set(mdat, moof.byteLength); - - this.trigger('data', {track: track, boxes: boxes}); - - this.resetStream_(); - - // Continue with the flush process now - this.trigger('done'); - }; - - this.resetStream_ = function() { - clearDtsInfo(track); - - // reset config and pps because they may differ across segments - // for instance, when we are rendition switching - config = undefined; - pps = undefined; - }; - - // Search for a candidate Gop for gop-fusion from the gop cache and - // return it or return null if no good candidate was found - this.getGopForFusion_ = function (nalUnit) { - var - halfSecond = 45000, // Half-a-second in a 90khz clock - allowableOverlap = 10000, // About 3 frames @ 30fps - nearestDistance = Infinity, - dtsDistance, - nearestGopObj, - currentGop, - currentGopObj, - i; - - // Search for the GOP nearest to the beginning of this nal unit - for (i = 0; i < this.gopCache_.length; i++) { - currentGopObj = this.gopCache_[i]; - currentGop = currentGopObj.gop; - - // Reject Gops with different SPS or PPS - if (!(track.pps && arrayEquals(track.pps[0], currentGopObj.pps[0])) || - !(track.sps && arrayEquals(track.sps[0], currentGopObj.sps[0]))) { - continue; - } - - // Reject Gops that would require a negative baseMediaDecodeTime - if (currentGop.dts < track.timelineStartInfo.dts) { - continue; - } - - // The distance between the end of the gop and the start of the nalUnit - dtsDistance = (nalUnit.dts - currentGop.dts) - currentGop.duration; - - // Only consider GOPS that start before the nal unit and end within - // a half-second of the nal unit - if (dtsDistance >= -allowableOverlap && - dtsDistance <= halfSecond) { - - // Always use the closest GOP we found if there is more than - // one candidate - if (!nearestGopObj || - nearestDistance > dtsDistance) { - nearestGopObj = currentGopObj; - nearestDistance = dtsDistance; - } - } - } - - if (nearestGopObj) { - return nearestGopObj.gop; - } - return null; - }; - - this.extendFirstKeyFrame_ = function(gops) { - var - h, i, - currentGop, - newGops; - - if (!gops[0][0].keyFrame) { - // Remove the first GOP - currentGop = gops.shift(); - - gops.byteLength -= currentGop.byteLength; - gops.nalCount -= currentGop.nalCount; - - // Extend the first frame of what is now the - // first gop to cover the time period of the - // frames we just removed - gops[0][0].dts = currentGop.dts; - gops[0][0].pts = currentGop.pts; - gops[0][0].duration += currentGop.duration; - } - - return gops; - }; - - // Convert an array of nal units into an array of frames with each frame being - // composed of the nal units that make up that frame - // Also keep track of cummulative data about the frame from the nal units such - // as the frame duration, starting pts, etc. - this.groupNalsIntoFrames_ = function(nalUnits) { - var - i, - currentNal, - startPts, - startDts, - currentFrame = [], - frames = []; - - currentFrame.byteLength = 0; - - for (i = 0; i < nalUnits.length; i++) { - currentNal = nalUnits[i]; - - // Split on 'aud'-type nal units - if (currentNal.nalUnitType === 'access_unit_delimiter_rbsp') { - // Since the very first nal unit is expected to be an AUD - // only push to the frames array when currentFrame is not empty - if (currentFrame.length) { - currentFrame.duration = currentNal.dts - currentFrame.dts; - frames.push(currentFrame); - } - currentFrame = [currentNal]; - currentFrame.byteLength = currentNal.data.byteLength; - currentFrame.pts = currentNal.pts; - currentFrame.dts = currentNal.dts; - } else { - // Specifically flag key frames for ease of use later - if (currentNal.nalUnitType === 'slice_layer_without_partitioning_rbsp_idr') { - currentFrame.keyFrame = true; - } - currentFrame.duration = currentNal.dts - currentFrame.dts; - currentFrame.byteLength += currentNal.data.byteLength; - currentFrame.push(currentNal); - } - } - - // For the last frame, use the duration of the previous frame if we - // have nothing better to go on - if (frames.length && - !currentFrame.duration || - currentFrame.duration <= 0) { - currentFrame.duration = frames[frames.length - 1].duration; - } - - // Push the final frame - frames.push(currentFrame); - return frames; - }; - - // Convert an array of frames into an array of Gop with each Gop being composed - // of the frames that make up that Gop - // Also keep track of cummulative data about the Gop from the frames such as the - // Gop duration, starting pts, etc. - this.groupFramesIntoGops_ = function(frames) { - var - i, - currentFrame, - currentGop = [], - gops = []; - - // We must pre-set some of the values on the Gop since we - // keep running totals of these values - currentGop.byteLength = 0; - currentGop.nalCount = 0; - currentGop.duration = 0; - currentGop.pts = frames[0].pts; - currentGop.dts = frames[0].dts; - - // store some metadata about all the Gops - gops.byteLength = 0; - gops.nalCount = 0; - gops.duration = 0; - gops.pts = frames[0].pts; - gops.dts = frames[0].dts; - - for (i = 0; i < frames.length; i++) { - currentFrame = frames[i]; - - if (currentFrame.keyFrame) { - // Since the very first frame is expected to be an keyframe - // only push to the gops array when currentGop is not empty - if (currentGop.length) { - gops.push(currentGop); - gops.byteLength += currentGop.byteLength; - gops.nalCount += currentGop.nalCount; - gops.duration += currentGop.duration; - } - - currentGop = [currentFrame]; - currentGop.nalCount = currentFrame.length; - currentGop.byteLength = currentFrame.byteLength; - currentGop.pts = currentFrame.pts; - currentGop.dts = currentFrame.dts; - currentGop.duration = currentFrame.duration; - } else { - currentGop.duration += currentFrame.duration; - currentGop.nalCount += currentFrame.length; - currentGop.byteLength += currentFrame.byteLength; - currentGop.push(currentFrame); - } - } - - if (gops.length && currentGop.duration <= 0) { - currentGop.duration = gops[gops.length - 1].duration; - } - gops.byteLength += currentGop.byteLength; - gops.nalCount += currentGop.nalCount; - gops.duration += currentGop.duration; - - // push the final Gop - gops.push(currentGop); - return gops; - }; - - // generate the track's sample table from an array of gops - this.generateSampleTable_ = function(gops, baseDataOffset) { - var - h, i, - sample, - currentGop, - currentFrame, - currentSample, - dataOffset = baseDataOffset || 0, - samples = []; - - for (h = 0; h < gops.length; h++) { - currentGop = gops[h]; - - for (i = 0; i < currentGop.length; i++) { - currentFrame = currentGop[i]; - - sample = Object.create(defaultSample); - - sample.dataOffset = dataOffset; - sample.compositionTimeOffset = currentFrame.pts - currentFrame.dts; - sample.duration = currentFrame.duration; - sample.size = 4 * currentFrame.length; // Space for nal unit size - sample.size += currentFrame.byteLength; - - if (currentFrame.keyFrame) { - sample.flags.dependsOn = 2; - } - - dataOffset += sample.size; - - samples.push(sample); - } - } - return samples; - }; - - // generate the track's raw mdat data from an array of gops - this.concatenateNalData_ = function (gops) { - var - h, i, j, - currentGop, - currentFrame, - currentNal, - dataOffset = 0, - nalsByteLength = gops.byteLength, - numberOfNals = gops.nalCount, - totalByteLength = nalsByteLength + 4 * numberOfNals, - data = new Uint8Array(totalByteLength), - view = new DataView(data.buffer); - - // For each Gop.. - for (h = 0; h < gops.length; h++) { - currentGop = gops[h]; - - // For each Frame.. - for (i = 0; i < currentGop.length; i++) { - currentFrame = currentGop[i]; - - // For each NAL.. - for (j = 0; j < currentFrame.length; j++) { - currentNal = currentFrame[j]; - - view.setUint32(dataOffset, currentNal.data.byteLength); - dataOffset += 4; - data.set(currentNal.data, dataOffset); - dataOffset += currentNal.data.byteLength; - } - } - } - return data; - }; -}; - -VideoSegmentStream.prototype = new Stream(); - -/** - * Store information about the start and end of the track and the - * duration for each frame/sample we process in order to calculate - * the baseMediaDecodeTime - */ -collectDtsInfo = function (track, data) { - if (typeof data.pts === 'number') { - if (track.timelineStartInfo.pts === undefined) { - track.timelineStartInfo.pts = data.pts; - } - - if (track.minSegmentPts === undefined) { - track.minSegmentPts = data.pts; - } else { - track.minSegmentPts = Math.min(track.minSegmentPts, data.pts); - } - - if (track.maxSegmentPts === undefined) { - track.maxSegmentPts = data.pts; - } else { - track.maxSegmentPts = Math.max(track.maxSegmentPts, data.pts); - } - } - - if (typeof data.dts === 'number') { - if (track.timelineStartInfo.dts === undefined) { - track.timelineStartInfo.dts = data.dts; - } - - if (track.minSegmentDts === undefined) { - track.minSegmentDts = data.dts; - } else { - track.minSegmentDts = Math.min(track.minSegmentDts, data.dts); - } - - if (track.maxSegmentDts === undefined) { - track.maxSegmentDts = data.dts; - } else { - track.maxSegmentDts = Math.max(track.maxSegmentDts, data.dts); - } - } -}; - -/** - * Clear values used to calculate the baseMediaDecodeTime between - * tracks - */ -clearDtsInfo = function (track) { - delete track.minSegmentDts; - delete track.maxSegmentDts; - delete track.minSegmentPts; - delete track.maxSegmentPts; -}; - -/** - * Calculate the track's baseMediaDecodeTime based on the earliest - * DTS the transmuxer has ever seen and the minimum DTS for the - * current track - */ -calculateTrackBaseMediaDecodeTime = function (track) { - var - oneSecondInPTS = 90000, // 90kHz clock - scale, - // Calculate the distance, in time, that this segment starts from the start - // of the timeline (earliest time seen since the transmuxer initialized) - timeSinceStartOfTimeline = track.minSegmentDts - track.timelineStartInfo.dts, - // Calculate the first sample's effective compositionTimeOffset - firstSampleCompositionOffset = track.minSegmentPts - track.minSegmentDts; - - // track.timelineStartInfo.baseMediaDecodeTime is the location, in time, where - // we want the start of the first segment to be placed - track.baseMediaDecodeTime = track.timelineStartInfo.baseMediaDecodeTime; - - // Add to that the distance this segment is from the very first - track.baseMediaDecodeTime += timeSinceStartOfTimeline; - - // Subtract this segment's "compositionTimeOffset" so that the first frame of - // this segment is displayed exactly at the `baseMediaDecodeTime` or at the - // end of the previous segment - track.baseMediaDecodeTime -= firstSampleCompositionOffset; - - // baseMediaDecodeTime must not become negative - track.baseMediaDecodeTime = Math.max(0, track.baseMediaDecodeTime); - - if (track.type === 'audio') { - // Audio has a different clock equal to the sampling_rate so we need to - // scale the PTS values into the clock rate of the track - scale = track.samplerate / oneSecondInPTS; - track.baseMediaDecodeTime *= scale; - track.baseMediaDecodeTime = Math.floor(track.baseMediaDecodeTime); - } -}; - -/** - * A Stream that can combine multiple streams (ie. audio & video) - * into a single output segment for MSE. Also supports audio-only - * and video-only streams. - */ -CoalesceStream = function(options) { - // Number of Tracks per output segment - // If greater than 1, we combine multiple - // tracks into a single segment - this.numberOfTracks = 0; - this.metadataStream = options.metadataStream; - - if (typeof options.remux !== 'undefined') { - this.remuxTracks = !!options.remux; - } else { - this.remuxTracks = true; - } - - this.pendingTracks = []; - this.videoTrack = null; - this.pendingBoxes = []; - this.pendingCaptions = []; - this.pendingMetadata = []; - this.pendingBytes = 0; - this.emittedTracks = 0; - - CoalesceStream.prototype.init.call(this); - - // Take output from multiple - this.push = function(output) { - // buffer incoming captions until the associated video segment - // finishes - if (output.text) { - return this.pendingCaptions.push(output); - } - // buffer incoming id3 tags until the final flush - if (output.frames) { - return this.pendingMetadata.push(output); - } - - // Add this track to the list of pending tracks and store - // important information required for the construction of - // the final segment - this.pendingTracks.push(output.track); - this.pendingBoxes.push(output.boxes); - this.pendingBytes += output.boxes.byteLength; - - if (output.track.type === 'video') { - this.videoTrack = output.track; - } - if (output.track.type === 'audio') { - this.audioTrack = output.track; - } - }; -}; - -CoalesceStream.prototype = new Stream(); -CoalesceStream.prototype.flush = function() { - var - offset = 0, - event = { - captions: [], - metadata: [] - }, - caption, - id3, - initSegment, - timelineStartPts = 0, - i; - - // Return until we have enough tracks from the pipeline to remux - if (this.pendingTracks.length === 0 || - (this.remuxTracks && this.pendingTracks.length < this.numberOfTracks)) { - return; - } - - if (this.videoTrack) { - timelineStartPts = this.videoTrack.timelineStartInfo.pts; - } else if (this.audioTrack) { - timelineStartPts = this.audioTrack.timelineStartInfo.pts; - } - - if (this.pendingTracks.length === 1) { - event.type = this.pendingTracks[0].type; - } else { - event.type = 'combined'; - } - this.emittedTracks += this.pendingTracks.length; - - initSegment = mp4.initSegment(this.pendingTracks); - - // Create a new typed array large enough to hold the init - // segment and all tracks - event.data = new Uint8Array(initSegment.byteLength + - this.pendingBytes); - - // Create an init segment containing a moov - // and track definitions - event.data.set(initSegment); - offset += initSegment.byteLength; - - // Append each moof+mdat (one per track) after the init segment - for (i = 0; i < this.pendingBoxes.length; i++) { - event.data.set(this.pendingBoxes[i], offset); - offset += this.pendingBoxes[i].byteLength; - } - - // Translate caption PTS times into second offsets into the - // video timeline for the segment - for (i = 0; i < this.pendingCaptions.length; i++) { - caption = this.pendingCaptions[i]; - caption.startTime = (caption.startPts - timelineStartPts); - caption.startTime /= 90e3; - caption.endTime = (caption.endPts - timelineStartPts); - caption.endTime /= 90e3; - event.captions.push(caption); - } - - // Translate ID3 frame PTS times into second offsets into the - // video timeline for the segment - for (i = 0; i < this.pendingMetadata.length; i++) { - id3 = this.pendingMetadata[i]; - id3.cueTime = (id3.pts - timelineStartPts); - id3.cueTime /= 90e3; - event.metadata.push(id3); - } - // We add this to every single emitted segment even though we only need - // it for the first - event.metadata.dispatchType = this.metadataStream.dispatchType; - - // Reset stream state - this.pendingTracks.length = 0; - this.videoTrack = null; - this.pendingBoxes.length = 0; - this.pendingCaptions.length = 0; - this.pendingBytes = 0; - this.pendingMetadata.length = 0; - - // Emit the built segment - this.trigger('data', event); - - // Only emit `done` if all tracks have been flushed and emitted - if (this.emittedTracks >= this.numberOfTracks) { - this.trigger('done'); - this.emittedTracks = 0; - } -}; -/** - * A Stream that expects MP2T binary data as input and produces - * corresponding media segments, suitable for use with Media Source - * Extension (MSE) implementations that support the ISO BMFF byte - * stream format, like Chrome. - */ -Transmuxer = function(options) { - var - self = this, - videoTrack, - audioTrack, - packetStream, parseStream, elementaryStream, - adtsStream, h264Stream,aacStream, - videoSegmentStream, audioSegmentStream, captionStream, - coalesceStream, - headOfPipeline; - - this.setupAacPipeline = function() { - this.metadataStream = new m2ts.MetadataStream(); - options.metadataStream = this.metadataStream; - - // set up the parsing pipeline - aacStream = new AacStream(); - adtsStream = new AdtsStream(); - coalesceStream = new CoalesceStream(options); - headOfPipeline = aacStream; - - aacStream.pipe(adtsStream); - aacStream.pipe(this.metadataStream); - this.metadataStream.pipe(coalesceStream); - - this.metadataStream.on('timestamp', function(frame) { - aacStream.setTimestamp(frame.timestamp); - }); - this.addAacListener(); - }; - - - this.addAacListener = function() { - aacStream.on('data', function(data) { - var i; - - if (data.type === 'timed-metadata') { - var track = { - timelineStartInfo: { - baseMediaDecodeTime: 0 }, - codec: 'adts', - type: 'audio' }; - - if (track && !audioSegmentStream) { - // hook up the audio segment stream to the first track with aac data - coalesceStream.numberOfTracks++; - audioSegmentStream = new AudioSegmentStream(track); - // Set up the final part of the audio pipeline - adtsStream - .pipe(audioSegmentStream) - .pipe(coalesceStream); - } - } - }); - }; - - this.setupTsPipeline = function() { - this.metadataStream = new m2ts.MetadataStream(); - - options.metadataStream = this.metadataStream; - - // set up the parsing pipeline - packetStream = new m2ts.TransportPacketStream(); - parseStream = new m2ts.TransportParseStream(); - elementaryStream = new m2ts.ElementaryStream(); - adtsStream = new AdtsStream(); - h264Stream = new H264Stream(); - captionStream = new m2ts.CaptionStream(); - coalesceStream = new CoalesceStream(options); - headOfPipeline = packetStream; - - // disassemble MPEG2-TS packets into elementary streams - packetStream - .pipe(parseStream) - .pipe(elementaryStream); - - // !!THIS ORDER IS IMPORTANT!! - // demux the streams - elementaryStream - .pipe(h264Stream); - elementaryStream - .pipe(adtsStream); - - elementaryStream - .pipe(this.metadataStream) - .pipe(coalesceStream); - - // Hook up CEA-608/708 caption stream - h264Stream.pipe(captionStream) - .pipe(coalesceStream); - this.addTsListener(); - }; - - this.addTsListener = function() { - - elementaryStream.on('data', function(data) { - var i; - - if (data.type === 'metadata') { - i = data.tracks.length; - - // scan the tracks listed in the metadata - while (i--) { - if (!videoTrack && data.tracks[i].type === 'video') { - videoTrack = data.tracks[i]; - videoTrack.timelineStartInfo.baseMediaDecodeTime = self.baseMediaDecodeTime; - } else if (!audioTrack && data.tracks[i].type === 'audio') { - audioTrack = data.tracks[i]; - audioTrack.timelineStartInfo.baseMediaDecodeTime = self.baseMediaDecodeTime; - } - } - - // hook up the video segment stream to the first track with h264 data - if (videoTrack && !videoSegmentStream) { - coalesceStream.numberOfTracks++; - videoSegmentStream = new VideoSegmentStream(videoTrack); - - videoSegmentStream.on('timelineStartInfo', function(timelineStartInfo){ - // When video emits timelineStartInfo data after a flush, we forward that - // info to the AudioSegmentStream, if it exists, because video timeline - // data takes precedence. - if (audioTrack) { - audioTrack.timelineStartInfo = timelineStartInfo; - // On the first segment we trim AAC frames that exist before the - // very earliest DTS we have seen in video because Chrome will - // interpret any video track with a baseMediaDecodeTime that is - // non-zero as a gap. - audioSegmentStream.setEarliestDts(timelineStartInfo.dts); - } - }); - - // Set up the final part of the video pipeline - h264Stream - .pipe(videoSegmentStream) - .pipe(coalesceStream); - } - - if (audioTrack && !audioSegmentStream) { - // hook up the audio segment stream to the first track with aac data - coalesceStream.numberOfTracks++; - audioSegmentStream = new AudioSegmentStream(audioTrack); - - // Set up the final part of the audio pipeline - adtsStream - .pipe(audioSegmentStream) - .pipe(coalesceStream); - } - } - }); - }; - Transmuxer.prototype.init.call(this); - options = options || {}; - - this.baseMediaDecodeTime = options.baseMediaDecodeTime || 0; - - // expose the metadata stream - if (options.aacfile === undefined) { - this.setupTsPipeline(); - } else { - this.setupAacPipeline(); - } - - // hook up the segment streams once track metadata is delivered - this.setBaseMediaDecodeTime = function (baseMediaDecodeTime) { - this.baseMediaDecodeTime = baseMediaDecodeTime; - if (audioTrack) { - audioTrack.timelineStartInfo.dts = undefined; - audioTrack.timelineStartInfo.pts = undefined; - clearDtsInfo(audioTrack); - audioTrack.timelineStartInfo.baseMediaDecodeTime = baseMediaDecodeTime; - } - if (videoTrack) { - videoSegmentStream.gopCache_ = []; - videoTrack.timelineStartInfo.dts = undefined; - videoTrack.timelineStartInfo.pts = undefined; - clearDtsInfo(videoTrack); - videoTrack.timelineStartInfo.baseMediaDecodeTime = baseMediaDecodeTime; - } - }; - - // feed incoming data to the front of the parsing pipeline - this.push = function(data) { - headOfPipeline.push(data); - }; - - // flush any buffered data - this.flush = function() { - // Start at the top of the pipeline and flush all pending work - headOfPipeline.flush(); - }; - - // Re-emit any data coming from the coalesce stream to the outside world - coalesceStream.on('data', function (data) { - self.trigger('data', data); - }); - // Let the consumer know we have finished flushing the entire pipeline - coalesceStream.on('done', function () { - self.trigger('done'); - }); -}; -Transmuxer.prototype = new Stream(); - -module.exports = { - Transmuxer: Transmuxer, - VideoSegmentStream: VideoSegmentStream, - AudioSegmentStream: AudioSegmentStream, -}; - -},{"../aac":30,"../codecs/adts.js":31,"../codecs/h264":32,"../m2ts/m2ts.js":40,"../utils/stream.js":49,"./mp4-generator.js":44}],46:[function(require,module,exports){ -'use strict'; - -var - tagTypes = { - 0x08: 'audio', - 0x09: 'video', - 0x12: 'metadata' - }, - hex = function (val) { - return '0x' + ('00' + val.toString(16)).slice(-2).toUpperCase(); - }, - hexStringList = function (data) { - var arr = [], i; - /* jshint -W086 */ - while(data.byteLength > 0) { - i = 0; - switch(data.byteLength) { - default: - arr.push(hex(data[i++])); - case 7: - arr.push(hex(data[i++])); - case 6: - arr.push(hex(data[i++])); - case 5: - arr.push(hex(data[i++])); - case 4: - arr.push(hex(data[i++])); - case 3: - arr.push(hex(data[i++])); - case 2: - arr.push(hex(data[i++])); - case 1: - arr.push(hex(data[i++])); - } - data = data.subarray(i); - } - /* jshint +W086 */ - return arr.join(' '); - }, - parseAVCTag = function (tag, obj) { - var - avcPacketTypes = [ - 'AVC Sequence Header', - 'AVC NALU', - 'AVC End-of-Sequence' - ], - nalUnitTypes = [ - 'unspecified', - 'slice_layer_without_partitioning', - 'slice_data_partition_a_layer', - 'slice_data_partition_b_layer', - 'slice_data_partition_c_layer', - 'slice_layer_without_partitioning_idr', - 'sei', - 'seq_parameter_set', - 'pic_parameter_set', - 'access_unit_delimiter', - 'end_of_seq', - 'end_of_stream', - 'filler', - 'seq_parameter_set_ext', - 'prefix_nal_unit', - 'subset_seq_parameter_set', - 'reserved', - 'reserved', - 'reserved' - ], - compositionTime = (tag[1] & parseInt('01111111', 2) << 16) | (tag[2] << 8) | tag[3]; - - obj = obj || {}; - - obj.avcPacketType = avcPacketTypes[tag[0]]; - obj.CompositionTime = (tag[1] & parseInt('10000000', 2)) ? -compositionTime : compositionTime; - - if (tag[0] === 1) { - obj.nalUnitTypeRaw = hexStringList(tag.subarray(4, 100)); - } else { - obj.data = hexStringList(tag.subarray(4)); - } - - return obj; - }, - parseVideoTag = function (tag, obj) { - var - frameTypes = [ - 'Unknown', - 'Keyframe (for AVC, a seekable frame)', - 'Inter frame (for AVC, a nonseekable frame)', - 'Disposable inter frame (H.263 only)', - 'Generated keyframe (reserved for server use only)', - 'Video info/command frame' - ], - codecIDs = [ - 'JPEG (currently unused)', - 'Sorenson H.263', - 'Screen video', - 'On2 VP6', - 'On2 VP6 with alpha channel', - 'Screen video version 2', - 'AVC' - ], - codecID = tag[0] & parseInt('00001111', 2); - - obj = obj || {}; - - obj.frameType = frameTypes[(tag[0] & parseInt('11110000', 2)) >>> 4]; - obj.codecID = codecID; - - if (codecID === 7) { - return parseAVCTag(tag.subarray(1), obj); - } - return obj; - }, - parseAACTag = function (tag, obj) { - var packetTypes = [ - 'AAC Sequence Header', - 'AAC Raw' - ]; - - obj = obj || {}; - - obj.aacPacketType = packetTypes[tag[0]]; - obj.data = hexStringList(tag.subarray(1)); - - return obj; - }, - parseAudioTag = function (tag, obj) { - var - formatTable = [ - 'Linear PCM, platform endian', - 'ADPCM', - 'MP3', - 'Linear PCM, little endian', - 'Nellymoser 16-kHz mono', - 'Nellymoser 8-kHz mono', - 'Nellymoser', - 'G.711 A-law logarithmic PCM', - 'G.711 mu-law logarithmic PCM', - 'reserved', - 'AAC', - 'Speex', - 'MP3 8-Khz', - 'Device-specific sound' - ], - samplingRateTable = [ - '5.5-kHz', - '11-kHz', - '22-kHz', - '44-kHz' - ], - soundFormat = (tag[0] & parseInt('11110000', 2)) >>> 4; - - obj = obj || {}; - - obj.soundFormat = formatTable[soundFormat]; - obj.soundRate = samplingRateTable[(tag[0] & parseInt('00001100', 2)) >>> 2]; - obj.soundSize = ((tag[0] & parseInt('00000010', 2)) >>> 1) ? '16-bit' : '8-bit'; - obj.soundType = (tag[0] & parseInt('00000001', 2)) ? 'Stereo' : 'Mono'; - - if (soundFormat === 10) { - return parseAACTag(tag.subarray(1), obj); - } - return obj; - }, - parseGenericTag = function (tag) { - return { - tagType: tagTypes[tag[0]], - dataSize: (tag[1] << 16) | (tag[2] << 8) | tag[3], - timestamp: (tag[7] << 24) | (tag[4] << 16) | (tag[5] << 8) | tag[6], - streamID: (tag[8] << 16) | (tag[9] << 8) | tag[10] - }; - }, - inspectFlvTag = function (tag) { - var header = parseGenericTag(tag); - switch (tag[0]) { - case 0x08: - parseAudioTag(tag.subarray(11), header); - break; - case 0x09: - parseVideoTag(tag.subarray(11), header); - break; - case 0x12: - } - return header; - }, - inspectFlv = function (bytes) { - var i = 9, // header - dataSize, - parsedResults = [], - tag; - - // traverse the tags - i += 4; // skip previous tag size - while (i < bytes.byteLength) { - dataSize = bytes[i + 1] << 16; - dataSize |= bytes[i + 2] << 8; - dataSize |= bytes[i + 3]; - dataSize += 11; - - tag = bytes.subarray(i, i + dataSize); - parsedResults.push(inspectFlvTag(tag)); - i += dataSize + 4; - } - return parsedResults; - }, - textifyFlv = function (flvTagArray) { - return JSON.stringify(flvTagArray, null, 2); - }; - -module.exports = { - inspectTag: inspectFlvTag, - inspect: inspectFlv, - textify: textifyFlv -}; - -},{}],47:[function(require,module,exports){ -(function (global){ -'use strict'; - -var - inspectMp4, - textifyMp4, - /** - * Returns the string representation of an ASCII encoded four byte buffer. - * @param buffer {Uint8Array} a four-byte buffer to translate - * @return {string} the corresponding string - */ - parseType = function(buffer) { - var result = ''; - result += String.fromCharCode(buffer[0]); - result += String.fromCharCode(buffer[1]); - result += String.fromCharCode(buffer[2]); - result += String.fromCharCode(buffer[3]); - return result; - }, - parseMp4Date = function(seconds) { - return new Date(seconds * 1000 - 2082844800000); - }, - parseSampleFlags = function(flags) { - return { - isLeading: (flags[0] & 0x0c) >>> 2, - dependsOn: flags[0] & 0x03, - isDependedOn: (flags[1] & 0xc0) >>> 6, - hasRedundancy: (flags[1] & 0x30) >>> 4, - paddingValue: (flags[1] & 0x0e) >>> 1, - isNonSyncSample: flags[1] & 0x01, - degradationPriority: (flags[2] << 8) | flags[3] - }; - }, - nalParse = function(avcStream) { - var - avcView = new DataView(avcStream.buffer, avcStream.byteOffset, avcStream.byteLength), - result = [], - i, - length; - for (i = 0; i + 4 < avcStream.length; i += length) { - length = avcView.getUint32(i); - i += 4; - - // bail if this doesn't appear to be an H264 stream - if (length <= 0) { - return; - } - - switch(avcStream[i] & 0x1F) { - case 0x01: - result.push('slice_layer_without_partitioning_rbsp'); - break; - case 0x05: - result.push('slice_layer_without_partitioning_rbsp_idr'); - break; - case 0x06: - result.push('sei_rbsp'); - break; - case 0x07: - result.push('seq_parameter_set_rbsp'); - break; - case 0x08: - result.push('pic_parameter_set_rbsp'); - break; - case 0x09: - result.push('access_unit_delimiter_rbsp'); - break; - default: - result.push(avcStream[i] & 0x1F); - break; - } - } - return result; - }, - - // registry of handlers for individual mp4 box types - parse = { - // codingname, not a first-class box type. stsd entries share the - // same format as real boxes so the parsing infrastructure can be - // shared - avc1: function(data) { - var view = new DataView(data.buffer, data.byteOffset, data.byteLength); - return { - dataReferenceIndex: view.getUint16(6), - width: view.getUint16(24), - height: view.getUint16(26), - horizresolution: view.getUint16(28) + (view.getUint16(30) / 16), - vertresolution: view.getUint16(32) + (view.getUint16(34) / 16), - frameCount: view.getUint16(40), - depth: view.getUint16(74), - config: inspectMp4(data.subarray(78, data.byteLength)) - }; - }, - avcC: function(data) { - var - view = new DataView(data.buffer, data.byteOffset, data.byteLength), - result = { - configurationVersion: data[0], - avcProfileIndication: data[1], - profileCompatibility: data[2], - avcLevelIndication: data[3], - lengthSizeMinusOne: data[4] & 0x03, - sps: [], - pps: [] - }, - numOfSequenceParameterSets = data[5] & 0x1f, - numOfPictureParameterSets, - nalSize, - offset, - i; - - // iterate past any SPSs - offset = 6; - for (i = 0; i < numOfSequenceParameterSets; i++) { - nalSize = view.getUint16(offset); - offset += 2; - result.sps.push(new Uint8Array(data.subarray(offset, offset + nalSize))); - offset += nalSize; - } - // iterate past any PPSs - numOfPictureParameterSets = data[offset]; - offset++; - for (i = 0; i < numOfPictureParameterSets; i++) { - nalSize = view.getUint16(offset); - offset += 2; - result.pps.push(new Uint8Array(data.subarray(offset, offset + nalSize))); - offset += nalSize; - } - return result; - }, - btrt: function(data) { - var view = new DataView(data.buffer, data.byteOffset, data.byteLength); - return { - bufferSizeDB: view.getUint32(0), - maxBitrate: view.getUint32(4), - avgBitrate: view.getUint32(8) - }; - }, - esds: function(data) { - return { - version: data[0], - flags: new Uint8Array(data.subarray(1, 4)), - esId: (data[6] << 8) | data[7], - streamPriority: data[8] & 0x1f, - decoderConfig: { - objectProfileIndication: data[11], - streamType: (data[12] >>> 2) & 0x3f, - bufferSize: (data[13] << 16) | (data[14] << 8) | data[15], - maxBitrate: (data[16] << 24) | - (data[17] << 16) | - (data[18] << 8) | - data[19], - avgBitrate: (data[20] << 24) | - (data[21] << 16) | - (data[22] << 8) | - data[23], - decoderConfigDescriptor: { - tag: data[24], - length: data[25], - audioObjectType: (data[26] >>> 3) & 0x1f, - samplingFrequencyIndex: ((data[26] & 0x07) << 1) | - ((data[27] >>> 7) & 0x01), - channelConfiguration: (data[27] >>> 3) & 0x0f - } - } - }; - }, - ftyp: function(data) { - var - view = new DataView(data.buffer, data.byteOffset, data.byteLength), - result = { - majorBrand: parseType(data.subarray(0, 4)), - minorVersion: view.getUint32(4), - compatibleBrands: [] - }, - i = 8; - while (i < data.byteLength) { - result.compatibleBrands.push(parseType(data.subarray(i, i + 4))); - i += 4; - } - return result; - }, - dinf: function(data) { - return { - boxes: inspectMp4(data) - }; - }, - dref: function(data) { - return { - version: data[0], - flags: new Uint8Array(data.subarray(1, 4)), - dataReferences: inspectMp4(data.subarray(8)) - }; - }, - hdlr: function(data) { - var - view = new DataView(data.buffer, data.byteOffset, data.byteLength), - language, - result = { - version: view.getUint8(0), - flags: new Uint8Array(data.subarray(1, 4)), - handlerType: parseType(data.subarray(8, 12)), - name: '' - }, - i = 8; - - // parse out the name field - for (i = 24; i < data.byteLength; i++) { - if (data[i] === 0x00) { - // the name field is null-terminated - i++; - break; - } - result.name += String.fromCharCode(data[i]); - } - // decode UTF-8 to javascript's internal representation - // see http://ecmanaut.blogspot.com/2006/07/encoding-decoding-utf8-in-javascript.html - result.name = decodeURIComponent(global.escape(result.name)); - - return result; - }, - mdat: function(data) { - return { - byteLength: data.byteLength, - nals: nalParse(data) - }; - }, - mdhd: function(data) { - var - view = new DataView(data.buffer, data.byteOffset, data.byteLength), - i = 4, - language, - result = { - version: view.getUint8(0), - flags: new Uint8Array(data.subarray(1, 4)), - language: '' - }; - if (result.version === 1) { - i += 4; - result.creationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes - i += 8; - result.modificationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes - i += 4; - result.timescale = view.getUint32(i); - i += 8; - result.duration = view.getUint32(i); // truncating top 4 bytes - } else { - result.creationTime = parseMp4Date(view.getUint32(i)); - i += 4; - result.modificationTime = parseMp4Date(view.getUint32(i)); - i += 4; - result.timescale = view.getUint32(i); - i += 4; - result.duration = view.getUint32(i); - } - i += 4; - // language is stored as an ISO-639-2/T code in an array of three 5-bit fields - // each field is the packed difference between its ASCII value and 0x60 - language = view.getUint16(i); - result.language += String.fromCharCode((language >> 10) + 0x60); - result.language += String.fromCharCode(((language & 0x03c0) >> 5) + 0x60); - result.language += String.fromCharCode((language & 0x1f) + 0x60); - - return result; - }, - mdia: function(data) { - return { - boxes: inspectMp4(data) - }; - }, - mfhd: function(data) { - return { - version: data[0], - flags: new Uint8Array(data.subarray(1, 4)), - sequenceNumber: (data[4] << 24) | - (data[5] << 16) | - (data[6] << 8) | - (data[7]) - }; - }, - minf: function(data) { - return { - boxes: inspectMp4(data) - }; - }, - // codingname, not a first-class box type. stsd entries share the - // same format as real boxes so the parsing infrastructure can be - // shared - mp4a: function(data) { - var - view = new DataView(data.buffer, data.byteOffset, data.byteLength), - result = { - // 6 bytes reserved - dataReferenceIndex: view.getUint16(6), - // 4 + 4 bytes reserved - channelcount: view.getUint16(16), - samplesize: view.getUint16(18), - // 2 bytes pre_defined - // 2 bytes reserved - samplerate: view.getUint16(24) + (view.getUint16(26) / 65536) - }; - - // if there are more bytes to process, assume this is an ISO/IEC - // 14496-14 MP4AudioSampleEntry and parse the ESDBox - if (data.byteLength > 28) { - result.streamDescriptor = inspectMp4(data.subarray(28))[0]; - } - return result; - }, - moof: function(data) { - return { - boxes: inspectMp4(data) - }; - }, - moov: function(data) { - return { - boxes: inspectMp4(data) - }; - }, - mvex: function(data) { - return { - boxes: inspectMp4(data) - }; - }, - mvhd: function(data) { - var - view = new DataView(data.buffer, data.byteOffset, data.byteLength), - i = 4, - result = { - version: view.getUint8(0), - flags: new Uint8Array(data.subarray(1, 4)) - }; - - if (result.version === 1) { - i += 4; - result.creationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes - i += 8; - result.modificationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes - i += 4; - result.timescale = view.getUint32(i); - i += 8; - result.duration = view.getUint32(i); // truncating top 4 bytes - } else { - result.creationTime = parseMp4Date(view.getUint32(i)); - i += 4; - result.modificationTime = parseMp4Date(view.getUint32(i)); - i += 4; - result.timescale = view.getUint32(i); - i += 4; - result.duration = view.getUint32(i); - } - i += 4; - - // convert fixed-point, base 16 back to a number - result.rate = view.getUint16(i) + (view.getUint16(i + 2) / 16); - i += 4; - result.volume = view.getUint8(i) + (view.getUint8(i + 1) / 8); - i += 2; - i += 2; - i += 2 * 4; - result.matrix = new Uint32Array(data.subarray(i, i + (9 * 4))); - i += 9 * 4; - i += 6 * 4; - result.nextTrackId = view.getUint32(i); - return result; - }, - pdin: function(data) { - var view = new DataView(data.buffer, data.byteOffset, data.byteLength); - return { - version: view.getUint8(0), - flags: new Uint8Array(data.subarray(1, 4)), - rate: view.getUint32(4), - initialDelay: view.getUint32(8) - }; - }, - sdtp: function(data) { - var - result = { - version: data[0], - flags: new Uint8Array(data.subarray(1, 4)), - samples: [] - }, i; - - for (i = 4; i < data.byteLength; i++) { - result.samples.push({ - dependsOn: (data[i] & 0x30) >> 4, - isDependedOn: (data[i] & 0x0c) >> 2, - hasRedundancy: data[i] & 0x03 - }); - } - return result; - }, - sidx: function(data) { - var view = new DataView(data.buffer, data.byteOffset, data.byteLength), - result = { - version: data[0], - flags: new Uint8Array(data.subarray(1, 4)), - references: [], - referenceId: view.getUint32(4), - timescale: view.getUint32(8), - earliestPresentationTime: view.getUint32(12), - firstOffset: view.getUint32(16) - }, - referenceCount = view.getUint16(22), - i; - - for (i = 24; referenceCount; i += 12, referenceCount-- ) { - result.references.push({ - referenceType: (data[i] & 0x80) >>> 7, - referencedSize: view.getUint32(i) & 0x7FFFFFFF, - subsegmentDuration: view.getUint32(i + 4), - startsWithSap: !!(data[i + 8] & 0x80), - sapType: (data[i + 8] & 0x70) >>> 4, - sapDeltaTime: view.getUint32(i + 8) & 0x0FFFFFFF - }); - } - - return result; - }, - smhd: function(data) { - return { - version: data[0], - flags: new Uint8Array(data.subarray(1, 4)), - balance: data[4] + (data[5] / 256) - }; - }, - stbl: function(data) { - return { - boxes: inspectMp4(data) - }; - }, - stco: function(data) { - var - view = new DataView(data.buffer, data.byteOffset, data.byteLength), - result = { - version: data[0], - flags: new Uint8Array(data.subarray(1, 4)), - chunkOffsets: [] - }, - entryCount = view.getUint32(4), - i; - for (i = 8; entryCount; i += 4, entryCount--) { - result.chunkOffsets.push(view.getUint32(i)); - } - return result; - }, - stsc: function(data) { - var - view = new DataView(data.buffer, data.byteOffset, data.byteLength), - entryCount = view.getUint32(4), - result = { - version: data[0], - flags: new Uint8Array(data.subarray(1, 4)), - sampleToChunks: [] - }, - i; - for (i = 8; entryCount; i += 12, entryCount--) { - result.sampleToChunks.push({ - firstChunk: view.getUint32(i), - samplesPerChunk: view.getUint32(i + 4), - sampleDescriptionIndex: view.getUint32(i + 8) - }); - } - return result; - }, - stsd: function(data) { - return { - version: data[0], - flags: new Uint8Array(data.subarray(1, 4)), - sampleDescriptions: inspectMp4(data.subarray(8)) - }; - }, - stsz: function(data) { - var - view = new DataView(data.buffer, data.byteOffset, data.byteLength), - result = { - version: data[0], - flags: new Uint8Array(data.subarray(1, 4)), - sampleSize: view.getUint32(4), - entries: [] - }, - i; - for (i = 12; i < data.byteLength; i += 4) { - result.entries.push(view.getUint32(i)); - } - return result; - }, - stts: function(data) { - var - view = new DataView(data.buffer, data.byteOffset, data.byteLength), - result = { - version: data[0], - flags: new Uint8Array(data.subarray(1, 4)), - timeToSamples: [] - }, - entryCount = view.getUint32(4), - i; - - for (i = 8; entryCount; i += 8, entryCount--) { - result.timeToSamples.push({ - sampleCount: view.getUint32(i), - sampleDelta: view.getUint32(i + 4) - }); - } - return result; - }, - styp: function(data) { - return parse.ftyp(data); - }, - tfdt: function(data) { - return { - version: data[0], - flags: new Uint8Array(data.subarray(1, 4)), - baseMediaDecodeTime: data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7] - }; - }, - tfhd: function(data) { - var - view = new DataView(data.buffer, data.byteOffset, data.byteLength), - result = { - version: data[0], - flags: new Uint8Array(data.subarray(1, 4)), - trackId: view.getUint32(4) - }, - baseDataOffsetPresent = result.flags[2] & 0x01, - sampleDescriptionIndexPresent = result.flags[2] & 0x02, - defaultSampleDurationPresent = result.flags[2] & 0x08, - defaultSampleSizePresent = result.flags[2] & 0x10, - defaultSampleFlagsPresent = result.flags[2] & 0x20, - i; - - i = 8; - if (baseDataOffsetPresent) { - i += 4; // truncate top 4 bytes - result.baseDataOffset = view.getUint32(12); - i += 4; - } - if (sampleDescriptionIndexPresent) { - result.sampleDescriptionIndex = view.getUint32(i); - i += 4; - } - if (defaultSampleDurationPresent) { - result.defaultSampleDuration = view.getUint32(i); - i += 4; - } - if (defaultSampleSizePresent) { - result.defaultSampleSize = view.getUint32(i); - i += 4; - } - if (defaultSampleFlagsPresent) { - result.defaultSampleFlags = view.getUint32(i); - } - return result; - }, - tkhd: function(data) { - var - view = new DataView(data.buffer, data.byteOffset, data.byteLength), - i = 4, - result = { - version: view.getUint8(0), - flags: new Uint8Array(data.subarray(1, 4)), - }; - if (result.version === 1) { - i += 4; - result.creationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes - i += 8; - result.modificationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes - i += 4; - result.trackId = view.getUint32(i); - i += 4; - i += 8; - result.duration = view.getUint32(i); // truncating top 4 bytes - } else { - result.creationTime = parseMp4Date(view.getUint32(i)); - i += 4; - result.modificationTime = parseMp4Date(view.getUint32(i)); - i += 4; - result.trackId = view.getUint32(i); - i += 4; - i += 4; - result.duration = view.getUint32(i); - } - i += 4; - i += 2 * 4; - result.layer = view.getUint16(i); - i += 2; - result.alternateGroup = view.getUint16(i); - i += 2; - // convert fixed-point, base 16 back to a number - result.volume = view.getUint8(i) + (view.getUint8(i + 1) / 8); - i += 2; - i += 2; - result.matrix = new Uint32Array(data.subarray(i, i + (9 * 4))); - i += 9 * 4; - result.width = view.getUint16(i) + (view.getUint16(i + 2) / 16); - i += 4; - result.height = view.getUint16(i) + (view.getUint16(i + 2) / 16); - return result; - }, - traf: function(data) { - return { - boxes: inspectMp4(data) - }; - }, - trak: function(data) { - return { - boxes: inspectMp4(data) - }; - }, - trex: function(data) { - var view = new DataView(data.buffer, data.byteOffset, data.byteLength); - return { - version: data[0], - flags: new Uint8Array(data.subarray(1, 4)), - trackId: view.getUint32(4), - defaultSampleDescriptionIndex: view.getUint32(8), - defaultSampleDuration: view.getUint32(12), - defaultSampleSize: view.getUint32(16), - sampleDependsOn: data[20] & 0x03, - sampleIsDependedOn: (data[21] & 0xc0) >> 6, - sampleHasRedundancy: (data[21] & 0x30) >> 4, - samplePaddingValue: (data[21] & 0x0e) >> 1, - sampleIsDifferenceSample: !!(data[21] & 0x01), - sampleDegradationPriority: view.getUint16(22) - }; - }, - trun: function(data) { - var - result = { - version: data[0], - flags: new Uint8Array(data.subarray(1, 4)), - samples: [] - }, - view = new DataView(data.buffer, data.byteOffset, data.byteLength), - dataOffsetPresent = result.flags[2] & 0x01, - firstSampleFlagsPresent = result.flags[2] & 0x04, - sampleDurationPresent = result.flags[1] & 0x01, - sampleSizePresent = result.flags[1] & 0x02, - sampleFlagsPresent = result.flags[1] & 0x04, - sampleCompositionTimeOffsetPresent = result.flags[1] & 0x08, - sampleCount = view.getUint32(4), - offset = 8, - sample; - - if (dataOffsetPresent) { - result.dataOffset = view.getUint32(offset); - offset += 4; - } - - if (firstSampleFlagsPresent && sampleCount) { - sample = { - flags: parseSampleFlags(data.subarray(offset, offset + 4)) - }; - offset += 4; - if (sampleDurationPresent) { - sample.duration = view.getUint32(offset); - offset += 4; - } - if (sampleSizePresent) { - sample.size = view.getUint32(offset); - offset += 4; - } - if (sampleCompositionTimeOffsetPresent) { - sample.compositionTimeOffset = view.getUint32(offset); - offset += 4; - } - result.samples.push(sample); - sampleCount--; - } - - while (sampleCount--) { - sample = {}; - if (sampleDurationPresent) { - sample.duration = view.getUint32(offset); - offset += 4; - } - if (sampleSizePresent) { - sample.size = view.getUint32(offset); - offset += 4; - } - if (sampleFlagsPresent) { - sample.flags = parseSampleFlags(data.subarray(offset, offset + 4)); - offset += 4; - } - if (sampleCompositionTimeOffsetPresent) { - sample.compositionTimeOffset = view.getUint32(offset); - offset += 4; - } - result.samples.push(sample); - } - return result; - }, - 'url ': function(data) { - return { - version: data[0], - flags: new Uint8Array(data.subarray(1, 4)) - }; - }, - vmhd: function(data) { - var view = new DataView(data.buffer, data.byteOffset, data.byteLength); - return { - version: data[0], - flags: new Uint8Array(data.subarray(1, 4)), - graphicsmode: view.getUint16(4), - opcolor: new Uint16Array([view.getUint16(6), - view.getUint16(8), - view.getUint16(10)]) - }; - } - }; - - -/** - * Return a javascript array of box objects parsed from an ISO base - * media file. - * @param data {Uint8Array} the binary data of the media to be inspected - * @return {array} a javascript array of potentially nested box objects - */ -inspectMp4 = function(data) { - var - i = 0, - result = [], - view, - size, - type, - end, - box; - - // Convert data from Uint8Array to ArrayBuffer, to follow Dataview API - var ab = new ArrayBuffer(data.length); - var v = new Uint8Array(ab); - for (var z = 0; z < data.length; ++z) { - v[z] = data[z]; - } - view = new DataView(ab); - - - while (i < data.byteLength) { - // parse box data - size = view.getUint32(i); - type = parseType(data.subarray(i + 4, i + 8)); - end = size > 1 ? i + size : data.byteLength; - - // parse type-specific data - box = (parse[type] || function(data) { - return { - data: data - }; - })(data.subarray(i + 8, end)); - box.size = size; - box.type = type; - - // store this box and move to the next - result.push(box); - i = end; - } - return result; -}; - -/** - * Returns a textual representation of the javascript represtentation - * of an MP4 file. You can use it as an alternative to - * JSON.stringify() to compare inspected MP4s. - * @param inspectedMp4 {array} the parsed array of boxes in an MP4 - * file - * @param depth {number} (optional) the number of ancestor boxes of - * the elements of inspectedMp4. Assumed to be zero if unspecified. - * @return {string} a text representation of the parsed MP4 - */ -textifyMp4 = function(inspectedMp4, depth) { - var indent; - depth = depth || 0; - indent = new Array(depth * 2 + 1).join(' '); - - // iterate over all the boxes - return inspectedMp4.map(function(box, index) { - - // list the box type first at the current indentation level - return indent + box.type + '\n' + - - // the type is already included and handle child boxes separately - Object.keys(box).filter(function(key) { - return key !== 'type' && key !== 'boxes'; - - // output all the box properties - }).map(function(key) { - var prefix = indent + ' ' + key + ': ', - value = box[key]; - - // print out raw bytes as hexademical - if (value instanceof Uint8Array || value instanceof Uint32Array) { - var bytes = Array.prototype.slice.call(new Uint8Array(value.buffer, value.byteOffset, value.byteLength)) - .map(function(byte) { - return ' ' + ('00' + byte.toString(16)).slice(-2); - }).join('').match(/.{1,24}/g); - if (!bytes) { - return prefix + '<>'; - } - if (bytes.length === 1) { - return prefix + '<' + bytes.join('').slice(1) + '>'; - } - return prefix + '<\n' + bytes.map(function(line) { - return indent + ' ' + line; - }).join('\n') + '\n' + indent + ' >'; - } - - // stringify generic objects - return prefix + - JSON.stringify(value, null, 2) - .split('\n').map(function(line, index) { - if (index === 0) { - return line; - } - return indent + ' ' + line; - }).join('\n'); - }).join('\n') + - - // recursively textify the child boxes - (box.boxes ? '\n' + textifyMp4(box.boxes, depth + 1) : ''); - }).join('\n'); -}; - -module.exports = { - inspect: inspectMp4, - textify: textifyMp4 -}; - -}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{}],48:[function(require,module,exports){ -'use strict'; - -var ExpGolomb; - -/** - * Parser for exponential Golomb codes, a variable-bitwidth number encoding - * scheme used by h264. - */ -ExpGolomb = function(workingData) { - var - // the number of bytes left to examine in workingData - workingBytesAvailable = workingData.byteLength, - - // the current word being examined - workingWord = 0, // :uint - - // the number of bits left to examine in the current word - workingBitsAvailable = 0; // :uint; - - // ():uint - this.length = function() { - return (8 * workingBytesAvailable); - }; - - // ():uint - this.bitsAvailable = function() { - return (8 * workingBytesAvailable) + workingBitsAvailable; - }; - - // ():void - this.loadWord = function() { - var - position = workingData.byteLength - workingBytesAvailable, - workingBytes = new Uint8Array(4), - availableBytes = Math.min(4, workingBytesAvailable); - - if (availableBytes === 0) { - throw new Error('no bytes available'); - } - - workingBytes.set(workingData.subarray(position, - position + availableBytes)); - workingWord = new DataView(workingBytes.buffer).getUint32(0); - - // track the amount of workingData that has been processed - workingBitsAvailable = availableBytes * 8; - workingBytesAvailable -= availableBytes; - }; - - // (count:int):void - this.skipBits = function(count) { - var skipBytes; // :int - if (workingBitsAvailable > count) { - workingWord <<= count; - workingBitsAvailable -= count; - } else { - count -= workingBitsAvailable; - skipBytes = Math.floor(count / 8); - - count -= (skipBytes * 8); - workingBytesAvailable -= skipBytes; - - this.loadWord(); - - workingWord <<= count; - workingBitsAvailable -= count; - } - }; - - // (size:int):uint - this.readBits = function(size) { - var - bits = Math.min(workingBitsAvailable, size), // :uint - valu = workingWord >>> (32 - bits); // :uint - // if size > 31, handle error - workingBitsAvailable -= bits; - if (workingBitsAvailable > 0) { - workingWord <<= bits; - } else if (workingBytesAvailable > 0) { - this.loadWord(); - } - - bits = size - bits; - if (bits > 0) { - return valu << bits | this.readBits(bits); - } else { - return valu; - } - }; - - // ():uint - this.skipLeadingZeros = function() { - var leadingZeroCount; // :uint - for (leadingZeroCount = 0 ; leadingZeroCount < workingBitsAvailable ; ++leadingZeroCount) { - if (0 !== (workingWord & (0x80000000 >>> leadingZeroCount))) { - // the first bit of working word is 1 - workingWord <<= leadingZeroCount; - workingBitsAvailable -= leadingZeroCount; - return leadingZeroCount; - } - } - - // we exhausted workingWord and still have not found a 1 - this.loadWord(); - return leadingZeroCount + this.skipLeadingZeros(); - }; - - // ():void - this.skipUnsignedExpGolomb = function() { - this.skipBits(1 + this.skipLeadingZeros()); - }; - - // ():void - this.skipExpGolomb = function() { - this.skipBits(1 + this.skipLeadingZeros()); - }; - - // ():uint - this.readUnsignedExpGolomb = function() { - var clz = this.skipLeadingZeros(); // :uint - return this.readBits(clz + 1) - 1; - }; - - // ():int - this.readExpGolomb = function() { - var valu = this.readUnsignedExpGolomb(); // :int - if (0x01 & valu) { - // the number is odd if the low order bit is set - return (1 + valu) >>> 1; // add 1 to make it even, and divide by 2 - } else { - return -1 * (valu >>> 1); // divide by two then make it negative - } - }; - - // Some convenience functions - // :Boolean - this.readBoolean = function() { - return 1 === this.readBits(1); - }; - - // ():int - this.readUnsignedByte = function() { - return this.readBits(8); - }; - - this.loadWord(); -}; - -module.exports = ExpGolomb; - -},{}],49:[function(require,module,exports){ -/** - * mux.js - * - * Copyright (c) 2014 Brightcove - * All rights reserved. - * - * A lightweight readable stream implemention that handles event dispatching. - * Objects that inherit from streams should call init in their constructors. - */ -'use strict'; - -var Stream = function() { - this.init = function() { - var listeners = {}; - /** - * Add a listener for a specified event type. - * @param type {string} the event name - * @param listener {function} the callback to be invoked when an event of - * the specified type occurs - */ - this.on = function(type, listener) { - if (!listeners[type]) { - listeners[type] = []; - } - listeners[type].push(listener); - }; - /** - * Remove a listener for a specified event type. - * @param type {string} the event name - * @param listener {function} a function previously registered for this - * type of event through `on` - */ - this.off = function(type, listener) { - var index; - if (!listeners[type]) { - return false; - } - index = listeners[type].indexOf(listener); - 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 type {string} the event name - */ - this.trigger = function(type) { - var callbacks, i, length, args; - callbacks = 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) { - length = callbacks.length; - for (i = 0; i < length; ++i) { - callbacks[i].call(this, arguments[1]); - } - } else { - args = []; - i = arguments.length; - for (i = 1; i < arguments.length; ++i) { - args.push(arguments[i]); - } - length = callbacks.length; - for (i = 0; i < length; ++i) { - callbacks[i].apply(this, args); - } - } - }; - /** - * Destroys the stream and cleans up. - */ - this.dispose = function() { - 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 destination {stream} the stream that will receive all `data` events - * @param autoFlush {boolean} if false, we will not call `flush` on the destination - * when the current stream emits a 'done' event - * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options - */ -Stream.prototype.pipe = function(destination) { - this.on('data', function(data) { - destination.push(data); - }); - - this.on('done', function() { - destination.flush(); - }); - - return destination; -}; - -// Default stream functions that are expected to be overridden to perform -// actual work. These are provided by the prototype as a sort of no-op -// implementation so that we don't have to check for their existence in the -// `pipe` function above. -Stream.prototype.push = function(data) { - this.trigger('data', data); -}; - -Stream.prototype.flush = function() { - this.trigger('done'); -}; - -module.exports = Stream; - -},{}],50:[function(require,module,exports){ -var bundleFn = arguments[3]; -var sources = arguments[4]; -var cache = arguments[5]; - -var stringify = JSON.stringify; - -module.exports = function (fn) { - var keys = []; - var wkey; - var cacheKeys = Object.keys(cache); - - for (var i = 0, l = cacheKeys.length; i < l; i++) { - var key = cacheKeys[i]; - if (cache[key].exports === fn) { - wkey = key; - break; - } - } - - if (!wkey) { - wkey = Math.floor(Math.pow(16, 8) * Math.random()).toString(16); - var wcache = {}; - for (var i = 0, l = cacheKeys.length; i < l; i++) { - var key = cacheKeys[i]; - wcache[key] = key; - } - sources[wkey] = [ - Function(['require','module','exports'], '(' + fn + ')(self)'), - wcache - ]; - } - var skey = Math.floor(Math.pow(16, 8) * Math.random()).toString(16); - - var scache = {}; scache[wkey] = wkey; - sources[skey] = [ - Function(['require'],'require(' + stringify(wkey) + ')(self)'), - scache - ]; - - var src = '(' + bundleFn + ')({' - + Object.keys(sources).map(function (key) { - return stringify(key) + ':[' - + sources[key][0] - + ',' + stringify(sources[key][1]) + ']' - ; - }).join(',') - + '},{},[' + stringify(skey) + '])' - ; - - var URL = window.URL || window.webkitURL || window.mozURL || window.msURL; - - return new Worker(URL.createObjectURL( - new Blob([src], { type: 'text/javascript' }) - )); -}; - -},{}],51:[function(require,module,exports){ -(function (global){ -/** - * videojs-hls - * The main file for the HLS project. - * License: https://github.com/videojs/videojs-contrib-hls/blob/master/LICENSE - */ -'use strict'; - -Object.defineProperty(exports, '__esModule', { - value: true -}); - -var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })(); - -var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } }; - -function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; } - -function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } } - -function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } - -var _playlistLoader = require('./playlist-loader'); - -var _playlistLoader2 = _interopRequireDefault(_playlistLoader); - -var _playlist = require('./playlist'); - -var _playlist2 = _interopRequireDefault(_playlist); - -var _xhr = require('./xhr'); - -var _xhr2 = _interopRequireDefault(_xhr); - -var _decrypter = require('./decrypter'); - -var _binUtils = require('./bin-utils'); - -var _binUtils2 = _interopRequireDefault(_binUtils); - -var _videojsContribMediaSources = require('videojs-contrib-media-sources'); - -var _m3u8 = require('./m3u8'); - -var _m3u82 = _interopRequireDefault(_m3u8); - -var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null); - -var _videoJs2 = _interopRequireDefault(_videoJs); - -var _resolveUrl = require('./resolve-url'); - -var _resolveUrl2 = _interopRequireDefault(_resolveUrl); - -var Hls = { - PlaylistLoader: _playlistLoader2['default'], - Playlist: _playlist2['default'], - Decrypter: _decrypter.Decrypter, - AsyncStream: _decrypter.AsyncStream, - decrypt: _decrypter.decrypt, - utils: _binUtils2['default'], - xhr: _xhr2['default'] -}; - -// the desired length of video to maintain in the buffer, in seconds -Hls.GOAL_BUFFER_LENGTH = 30; - -// HLS is a source handler, not a tech. Make sure attempts to use it -// as one do not cause exceptions. -Hls.canPlaySource = function () { - return _videoJs2['default'].log.warn('HLS is no longer a tech. Please remove it from ' + 'your player\'s techOrder.'); -}; - -// Search for a likely end time for the segment that was just appened -// based on the state of the `buffered` property before and after the -// append. -// If we found only one such uncommon end-point return it. -Hls.findSoleUncommonTimeRangesEnd_ = function (original, update) { - var i = undefined; - var start = undefined; - var end = undefined; - var result = []; - var edges = []; - - // In order to qualify as a possible candidate, the end point must: - // 1) Not have already existed in the `original` ranges - // 2) Not result from the shrinking of a range that already existed - // in the `original` ranges - // 3) Not be contained inside of a range that existed in `original` - var overlapsCurrentEnd = function overlapsCurrentEnd(span) { - return span[0] <= end && span[1] >= end; - }; - - if (original) { - // Save all the edges in the `original` TimeRanges object - for (i = 0; i < original.length; i++) { - start = original.start(i); - end = original.end(i); - - edges.push([start, end]); - } - } - - if (update) { - // Save any end-points in `update` that are not in the `original` - // TimeRanges object - for (i = 0; i < update.length; i++) { - start = update.start(i); - end = update.end(i); - - if (edges.some(overlapsCurrentEnd)) { - continue; - } - - // at this point it must be a unique non-shrinking end edge - result.push(end); - } - } - - // we err on the side of caution and return null if didn't find - // exactly *one* differing end edge in the search above - if (result.length !== 1) { - return null; - } - - return result[0]; -}; - -/** - * Whether the browser has built-in HLS support. - */ -Hls.supportsNativeHls = (function () { - var video = document.createElement('video'); - var xMpegUrl = undefined; - var vndMpeg = undefined; - - // native HLS is definitely not supported if HTML5 video isn't - if (!_videoJs2['default'].getComponent('Html5').isSupported()) { - return false; - } - - xMpegUrl = video.canPlayType('application/x-mpegURL'); - vndMpeg = video.canPlayType('application/vnd.apple.mpegURL'); - return (/probably|maybe/.test(xMpegUrl) || /probably|maybe/.test(vndMpeg) - ); -})(); - -// HLS is a source handler, not a tech. Make sure attempts to use it -// as one do not cause exceptions. -Hls.isSupported = function () { - return _videoJs2['default'].log.warn('HLS is no longer a tech. Please remove it from ' + 'your player\'s techOrder.'); -}; - -/** - * A comparator function to sort two playlist object by bandwidth. - * @param left {object} a media playlist object - * @param right {object} a media playlist object - * @return {number} Greater than zero if the bandwidth attribute of - * left is greater than the corresponding attribute of right. Less - * than zero if the bandwidth of right is greater than left and - * exactly zero if the two are equal. - */ -Hls.comparePlaylistBandwidth = function (left, right) { - var leftBandwidth = undefined; - var rightBandwidth = undefined; - - if (left.attributes && left.attributes.BANDWIDTH) { - leftBandwidth = left.attributes.BANDWIDTH; - } - leftBandwidth = leftBandwidth || window.Number.MAX_VALUE; - if (right.attributes && right.attributes.BANDWIDTH) { - rightBandwidth = right.attributes.BANDWIDTH; - } - rightBandwidth = rightBandwidth || window.Number.MAX_VALUE; - - return leftBandwidth - rightBandwidth; -}; - -/** - * A comparator function to sort two playlist object by resolution (width). - * @param left {object} a media playlist object - * @param right {object} a media playlist object - * @return {number} Greater than zero if the resolution.width attribute of - * left is greater than the corresponding attribute of right. Less - * than zero if the resolution.width of right is greater than left and - * exactly zero if the two are equal. - */ -Hls.comparePlaylistResolution = function (left, right) { - var leftWidth = undefined; - var rightWidth = undefined; - - if (left.attributes && left.attributes.RESOLUTION && left.attributes.RESOLUTION.width) { - leftWidth = left.attributes.RESOLUTION.width; - } - - leftWidth = leftWidth || window.Number.MAX_VALUE; - - if (right.attributes && right.attributes.RESOLUTION && right.attributes.RESOLUTION.width) { - rightWidth = right.attributes.RESOLUTION.width; - } - - rightWidth = rightWidth || window.Number.MAX_VALUE; - - // NOTE - Fallback to bandwidth sort as appropriate in cases where multiple renditions - // have the same media dimensions/ resolution - if (leftWidth === rightWidth && left.attributes.BANDWIDTH && right.attributes.BANDWIDTH) { - return left.attributes.BANDWIDTH - right.attributes.BANDWIDTH; - } - return leftWidth - rightWidth; -}; - -// A fudge factor to apply to advertised playlist bitrates to account for -// temporary flucations in client bandwidth -var bandwidthVariance = 1.2; - -// 5 minute blacklist -var blacklistDuration = 5 * 60 * 1000; - -// Fudge factor to account for TimeRanges rounding -var TIME_FUDGE_FACTOR = 1 / 30; -var Component = _videoJs2['default'].getComponent('Component'); - -// The amount of time to wait between checking the state of the buffer -var bufferCheckInterval = 500; - -// returns true if a key has failed to download within a certain amount of retries -var keyFailed = function keyFailed(key) { - return key.retries && key.retries >= 2; -}; - -/** - * Returns the CSS value for the specified property on an element - * using `getComputedStyle`. Firefox has a long-standing issue where - * getComputedStyle() may return null when running in an iframe with - * `display: none`. - * @see https://bugzilla.mozilla.org/show_bug.cgi?id=548397 - */ -var safeGetComputedStyle = function safeGetComputedStyle(el, property) { - var result = undefined; - - if (!el) { - return ''; - } - - result = getComputedStyle(el); - if (!result) { - return ''; - } - - return result[property]; -}; - -/** - * Updates segment with information about its end-point in time and, optionally, - * the segment duration if we have enough information to determine a segment duration - * accurately. - * @param playlist {object} a media playlist object - * @param segmentIndex {number} the index of segment we last appended - * @param segmentEnd {number} the known of the segment referenced by segmentIndex - */ -var updateSegmentMetadata = function updateSegmentMetadata(playlist, segmentIndex, segmentEnd) { - if (!playlist) { - return; - } - - var segment = playlist.segments[segmentIndex]; - var previousSegment = playlist.segments[segmentIndex - 1]; - - if (segmentEnd && segment) { - segment.end = segmentEnd; - - // fix up segment durations based on segment end data - if (!previousSegment) { - // first segment is always has a start time of 0 making its duration - // equal to the segment end - segment.duration = segment.end; - } else if (previousSegment.end) { - segment.duration = segment.end - previousSegment.end; - } - } -}; - -/** - * Determines if we should call endOfStream on the media source based on the state - * of the buffer or if appened segment was the final segment in the playlist. - * @param playlist {object} a media playlist object - * @param mediaSource {object} the MediaSource object - * @param segmentIndex {number} the index of segment we last appended - * @param currentBuffered {object} the buffered region that currentTime resides in - * @return {boolean} whether the calling function should call endOfStream on the MediaSource - */ -var detectEndOfStream = function detectEndOfStream(playlist, mediaSource, segmentIndex, currentBuffered) { - if (!playlist) { - return false; - } - - var segments = playlist.segments; - - // determine a few boolean values to help make the branch below easier - // to read - var appendedLastSegment = segmentIndex === segments.length - 1; - var bufferedToEnd = currentBuffered.length && segments[segments.length - 1].end <= currentBuffered.end(0); - - // if we've buffered to the end of the video, we need to call endOfStream - // so that MediaSources can trigger the `ended` event when it runs out of - // buffered data instead of waiting for me - return playlist.endList && mediaSource.readyState === 'open' && (appendedLastSegment || bufferedToEnd); -}; - -var parseCodecs = function parseCodecs(codecs) { - var result = { - codecCount: 0, - videoCodec: null, - audioProfile: null - }; - - result.codecCount = codecs.split(',').length; - result.codecCount = result.codecCount || 2; - - // parse the video codec but ignore the version - result.videoCodec = /(^|\s|,)+(avc1)[^ ,]*/i.exec(codecs); - result.videoCodec = result.videoCodec && result.videoCodec[2]; - - // parse the last field of the audio codec - result.audioProfile = /(^|\s|,)+mp4a.\d+\.(\d+)/i.exec(codecs); - result.audioProfile = result.audioProfile && result.audioProfile[2]; - - return result; -}; - -var filterBufferedRanges = function filterBufferedRanges(predicate) { - return function (time) { - var i = undefined; - var ranges = []; - var tech = this.tech_; - - // !!The order of the next two assignments is important!! - // `currentTime` must be equal-to or greater-than the start of the - // buffered range. Flash executes out-of-process so, every value can - // change behind the scenes from line-to-line. By reading `currentTime` - // after `buffered`, we ensure that it is always a current or later - // value during playback. - var buffered = tech.buffered(); - - if (typeof time === 'undefined') { - time = tech.currentTime(); - } - - // IE 11 has a bug where it will report a the video as fully buffered - // before any data has been loaded. This is a work around where we - // report a fully empty buffer until SourceBuffers have been created - // which is after a segment has been loaded and transmuxed. - if (!this.mediaSource || !this.mediaSource.mediaSource_ || !this.mediaSource.mediaSource_.sourceBuffers.length) { - return _videoJs2['default'].createTimeRanges([]); - } - - if (buffered && buffered.length) { - // Search for a range containing the play-head - for (i = 0; i < buffered.length; i++) { - if (predicate(buffered.start(i), buffered.end(i), time)) { - ranges.push([buffered.start(i), buffered.end(i)]); - } - } - } - - return _videoJs2['default'].createTimeRanges(ranges); - }; -}; - -var HlsHandler = (function (_Component) { - _inherits(HlsHandler, _Component); - - function HlsHandler(tech, options) { - var _this = this; - - _classCallCheck(this, HlsHandler); - - _get(Object.getPrototypeOf(HlsHandler.prototype), 'constructor', this).call(this, tech); - var _player = undefined; - - // tech.player() is deprecated but setup a reference to HLS for - // backwards-compatibility - if (tech.options_ && tech.options_.playerId) { - _player = (0, _videoJs2['default'])(tech.options_.playerId); - if (!_player.hls) { - Object.defineProperty(_player, 'hls', { - get: function get() { - _videoJs2['default'].log.warn('player.hls is deprecated. Use player.tech.hls instead.'); - return _this; - } - }); - } - } - this.tech_ = tech; - this.source_ = options.source; - this.mode_ = options.mode; - // the segment info object for a segment that is in the process of - // being downloaded or processed - this.pendingSegment_ = null; - - // start playlist selection at a reasonable bandwidth for - // broadband internet - // 0.5 Mbps - this.bandwidth = options.bandwidth || 4194304; - this.bytesReceived = 0; - - // loadingState_ tracks how far along the buffering process we - // have been given permission to proceed. There are three possible - // values: - // - none: do not load playlists or segments - // - meta: load playlists but not segments - // - segments: load everything - this.loadingState_ = 'none'; - if (this.tech_.preload() !== 'none') { - this.loadingState_ = 'meta'; - } - - // periodically check if new data needs to be downloaded or - // buffered data should be appended to the source buffer - this.startCheckingBuffer_(); - - this.on(this.tech_, 'seeking', function () { - this.setCurrentTime(this.tech_.currentTime()); - }); - this.on(this.tech_, 'error', function () { - this.stopCheckingBuffer_(); - }); - - this.on(this.tech_, 'play', this.play); - } - - /** - * Attempts to find the buffered TimeRange that contains the specified - * time, or where playback is currently happening if no specific time - * is specified. - * @param time (optional) {number} the time to filter on. Defaults to - * currentTime. - * @return a new TimeRanges object. - */ - - _createClass(HlsHandler, [{ - key: 'src', - value: function src(_src) { - var _this2 = this; - - var oldMediaPlaylist = undefined; - - // do nothing if the src is falsey - if (!_src) { - return; - } - - this.mediaSource = new _videoJs2['default'].MediaSource({ mode: this.mode_ }); - - // load the MediaSource into the player - this.mediaSource.addEventListener('sourceopen', this.handleSourceOpen.bind(this)); - - this.options_ = {}; - if (typeof this.source_.withCredentials !== 'undefined') { - this.options_.withCredentials = this.source_.withCredentials; - } else if (_videoJs2['default'].options.hls) { - this.options_.withCredentials = _videoJs2['default'].options.hls.withCredentials; - } - this.playlists = new Hls.PlaylistLoader(this.source_.src, this.options_.withCredentials); - - this.tech_.one('canplay', this.setupFirstPlay.bind(this)); - - this.playlists.on('loadedmetadata', function () { - oldMediaPlaylist = _this2.playlists.media(); - - // if this isn't a live video and preload permits, start - // downloading segments - if (oldMediaPlaylist.endList && _this2.tech_.preload() !== 'metadata' && _this2.tech_.preload() !== 'none') { - _this2.loadingState_ = 'segments'; - } - - _this2.setupSourceBuffer_(); - _this2.setupFirstPlay(); - _this2.fillBuffer(); - _this2.tech_.trigger('loadedmetadata'); - }); - - this.playlists.on('error', function () { - _this2.blacklistCurrentPlaylist_(_this2.playlists.error); - }); - - this.playlists.on('loadedplaylist', function () { - var updatedPlaylist = _this2.playlists.media(); - var seekable = undefined; - - if (!updatedPlaylist) { - // select the initial variant - _this2.playlists.media(_this2.selectPlaylist()); - return; - } - - _this2.updateDuration(_this2.playlists.media()); - - // update seekable - seekable = _this2.seekable(); - if (_this2.duration() === Infinity && seekable.length !== 0) { - _this2.mediaSource.addSeekableRange_(seekable.start(0), seekable.end(0)); - } - - oldMediaPlaylist = updatedPlaylist; - }); - - this.playlists.on('mediachange', function () { - _this2.tech_.trigger({ - type: 'mediachange', - bubbles: true - }); - }); - - // do nothing if the tech has been disposed already - // this can occur if someone sets the src in player.ready(), for instance - if (!this.tech_.el()) { - return; - } - - this.tech_.src(_videoJs2['default'].URL.createObjectURL(this.mediaSource)); - } - }, { - key: 'handleSourceOpen', - value: function handleSourceOpen() { - // Only attempt to create the source buffer if none already exist. - // handleSourceOpen is also called when we are "re-opening" a source buffer - // after `endOfStream` has been called (in response to a seek for instance) - if (!this.sourceBuffer) { - this.setupSourceBuffer_(); - } - - // if autoplay is enabled, begin playback. This is duplicative of - // code in video.js but is required because play() must be invoked - // *after* the media source has opened. - // NOTE: moving this invocation of play() after - // sourceBuffer.appendBuffer() below caused live streams with - // autoplay to stall - if (this.tech_.autoplay()) { - this.play(); - } - } - - /** - * Blacklist 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 media {object} a media playlist compatible with the current - * set of SourceBuffers. Variants in the current master playlist that - * do not appear to have compatible codec or stream configurations - * will be excluded from the default playlist selection algorithm - * indefinitely. - */ - }, { - key: 'excludeIncompatibleVariants_', - value: function excludeIncompatibleVariants_(media) { - var master = this.playlists.master; - var codecCount = 2; - var videoCodec = null; - var audioProfile = null; - var codecs = undefined; - - if (media.attributes && media.attributes.CODECS) { - codecs = parseCodecs(media.attributes.CODECS); - videoCodec = codecs.videoCodec; - audioProfile = codecs.audioProfile; - codecCount = codecs.codecCount; - } - master.playlists.forEach(function (variant) { - var variantCodecs = { - codecCount: 2, - videoCodec: null, - audioProfile: null - }; - - if (variant.attributes && variant.attributes.CODECS) { - variantCodecs = parseCodecs(variant.attributes.CODECS); - } - - // if the streams differ in the presence or absence of audio or - // video, they are incompatible - if (variantCodecs.codecCount !== codecCount) { - variant.excludeUntil = Infinity; - } - - // if h.264 is specified on the current playlist, some flavor of - // it must be specified on all compatible variants - if (variantCodecs.videoCodec !== videoCodec) { - variant.excludeUntil = Infinity; - } - // HE-AAC ("mp4a.40.5") is incompatible with all other versions of - // AAC audio in Chrome 46. Don't mix the two. - if (variantCodecs.audioProfile === '5' && audioProfile !== '5' || audioProfile === '5' && variantCodecs.audioProfile !== '5') { - variant.excludeUntil = Infinity; - } - }); - } - }, { - key: 'setupSourceBuffer_', - value: function setupSourceBuffer_() { - var media = this.playlists.media(); - var mimeType = undefined; - - // wait until a media playlist is available and the Media Source is - // attached - if (!media || this.mediaSource.readyState !== 'open') { - return; - } - - // if the codecs were explicitly specified, pass them along to the - // source buffer - mimeType = 'video/mp2t'; - if (media.attributes && media.attributes.CODECS) { - mimeType += '; codecs="' + media.attributes.CODECS + '"'; - } - this.sourceBuffer = this.mediaSource.addSourceBuffer(mimeType); - - // exclude any incompatible variant streams from future playlist - // selection - this.excludeIncompatibleVariants_(media); - - // transition the sourcebuffer to the ended state if we've hit the end of - // the playlist - this.sourceBuffer.addEventListener('updateend', this.updateEndHandler_.bind(this)); - } - - /** - * Seek to the latest media position if this is a live video and the - * player and video are loaded and initialized. - */ - }, { - key: 'setupFirstPlay', - value: function setupFirstPlay() { - var seekable = undefined; - var media = this.playlists.media(); - - // check that everything is ready to begin buffering - - // 1) the video is a live stream of unknown duration - if (this.duration() === Infinity && - - // 2) the player has not played before and is not paused - this.tech_.played().length === 0 && !this.tech_.paused() && - - // 3) the Media Source and Source Buffers are ready - this.sourceBuffer && - - // 4) the active media playlist is available - media && - - // 5) the video element or flash player is in a readyState of - // at least HAVE_FUTURE_DATA - this.tech_.readyState() >= 1) { - - // trigger the playlist loader to start "expired time"-tracking - this.playlists.trigger('firstplay'); - - // seek to the latest media position for live videos - seekable = this.seekable(); - if (seekable.length) { - this.tech_.setCurrentTime(seekable.end(0)); - } - } - } - - /** - * Begin playing the video. - */ - }, { - key: 'play', - value: function play() { - this.loadingState_ = 'segments'; - - if (this.tech_.ended()) { - this.tech_.setCurrentTime(0); - } - - if (this.tech_.played().length === 0) { - return this.setupFirstPlay(); - } - - // if the viewer has paused and we fell out of the live window, - // seek forward to the earliest available position - if (this.duration() === Infinity) { - if (this.tech_.currentTime() < this.seekable().start(0)) { - this.tech_.setCurrentTime(this.seekable().start(0)); - } - } - } - }, { - key: 'setCurrentTime', - value: function setCurrentTime(currentTime) { - var buffered = this.findBufferedRange_(); - - if (!(this.playlists && this.playlists.media())) { - // return immediately if the metadata is not ready yet - return 0; - } - - // it's clearly an edge-case but don't thrown an error if asked to - // seek within an empty playlist - if (!this.playlists.media().segments) { - return 0; - } - - // if the seek location is already buffered, continue buffering as - // usual - if (buffered && buffered.length) { - return currentTime; - } - - // if we are in the middle of appending a segment, let it finish up - if (this.pendingSegment_ && this.pendingSegment_.buffered) { - return currentTime; - } - - this.lastSegmentLoaded_ = null; - - // cancel outstanding requests and buffer appends - this.cancelSegmentXhr(); - - // abort outstanding key requests, if necessary - if (this.keyXhr_) { - this.keyXhr_.aborted = true; - this.cancelKeyXhr(); - } - - // begin filling the buffer at the new position - this.fillBuffer(this.playlists.getMediaIndexForTime_(currentTime)); - } - }, { - key: 'duration', - value: function duration() { - var playlists = this.playlists; - - if (!playlists) { - return 0; - } - - if (this.mediaSource) { - return this.mediaSource.duration; - } - - return Hls.Playlist.duration(playlists.media()); - } - }, { - key: 'seekable', - value: function seekable() { - var media = undefined; - var seekable = undefined; - - if (!this.playlists) { - return _videoJs2['default'].createTimeRanges(); - } - media = this.playlists.media(); - if (!media) { - return _videoJs2['default'].createTimeRanges(); - } - - seekable = Hls.Playlist.seekable(media); - if (seekable.length === 0) { - return seekable; - } - - // if the seekable start is zero, it may be because the player has - // been paused for a long time and stopped buffering. in that case, - // fall back to the playlist loader's running estimate of expired - // time - if (seekable.start(0) === 0) { - return _videoJs2['default'].createTimeRanges([[this.playlists.expired_, this.playlists.expired_ + seekable.end(0)]]); - } - - // seekable has been calculated based on buffering video data so it - // can be returned directly - return seekable; - } - - /** - * Update the player duration - */ - }, { - key: 'updateDuration', - value: function updateDuration(playlist) { - var _this3 = this; - - var oldDuration = this.mediaSource.duration; - var newDuration = Hls.Playlist.duration(playlist); - var buffered = this.tech_.buffered(); - var setDuration = function setDuration() { - _this3.mediaSource.duration = newDuration; - _this3.tech_.trigger('durationchange'); - - _this3.mediaSource.removeEventListener('sourceopen', setDuration); - }; - - if (buffered.length > 0) { - newDuration = Math.max(newDuration, buffered.end(buffered.length - 1)); - } - - // if the duration has changed, invalidate the cached value - if (oldDuration !== newDuration) { - // update the duration - if (this.mediaSource.readyState !== 'open') { - this.mediaSource.addEventListener('sourceopen', setDuration); - } else if (!this.sourceBuffer || !this.sourceBuffer.updating) { - this.mediaSource.duration = newDuration; - this.tech_.trigger('durationchange'); - } - } - } - - /** - * Clear all buffers and reset any state relevant to the current - * source. After this function is called, the tech should be in a - * state suitable for switching to a different video. - */ - }, { - key: 'resetSrc_', - value: function resetSrc_() { - this.cancelSegmentXhr(); - this.cancelKeyXhr(); - - if (this.sourceBuffer && this.mediaSource.readyState === 'open') { - this.sourceBuffer.abort(); - } - } - }, { - key: 'cancelKeyXhr', - value: function cancelKeyXhr() { - if (this.keyXhr_) { - this.keyXhr_.onreadystatechange = null; - this.keyXhr_.abort(); - this.keyXhr_ = null; - } - } - }, { - key: 'cancelSegmentXhr', - value: function cancelSegmentXhr() { - if (this.segmentXhr_) { - // Prevent error handler from running. - this.segmentXhr_.onreadystatechange = null; - this.segmentXhr_.abort(); - this.segmentXhr_ = null; - } - - // clear out the segment being processed - this.pendingSegment_ = null; - } - - /** - * Abort all outstanding work and cleanup. - */ - }, { - key: 'dispose', - value: function dispose() { - this.stopCheckingBuffer_(); - - if (this.playlists) { - this.playlists.dispose(); - } - - this.resetSrc_(); - _get(Object.getPrototypeOf(HlsHandler.prototype), 'dispose', this).call(this); - } - - /** - * Chooses the appropriate media playlist based on the current - * bandwidth estimate and the player size. - * @return the highest bitrate playlist less than the currently detected - * bandwidth, accounting for some amount of bandwidth variance - */ - }, { - key: 'selectPlaylist', - value: function selectPlaylist() { - var effectiveBitrate = undefined; - var sortedPlaylists = this.playlists.master.playlists.slice(); - var bandwidthPlaylists = []; - var now = +new Date(); - var i = undefined; - var variant = undefined; - var bandwidthBestVariant = undefined; - var resolutionPlusOne = undefined; - var resolutionPlusOneAttribute = undefined; - var resolutionBestVariant = undefined; - var width = undefined; - var height = undefined; - - sortedPlaylists.sort(Hls.comparePlaylistBandwidth); - - // filter out any playlists that have been excluded due to - // incompatible configurations or playback errors - sortedPlaylists = sortedPlaylists.filter(function (localVariant) { - if (typeof localVariant.excludeUntil !== 'undefined') { - return now >= localVariant.excludeUntil; - } - return true; - }); - - // filter out any variant that has greater effective bitrate - // than the current estimated bandwidth - i = sortedPlaylists.length; - while (i--) { - variant = sortedPlaylists[i]; - - // ignore playlists without bandwidth information - if (!variant.attributes || !variant.attributes.BANDWIDTH) { - continue; - } - - effectiveBitrate = variant.attributes.BANDWIDTH * bandwidthVariance; - - if (effectiveBitrate < this.bandwidth) { - bandwidthPlaylists.push(variant); - - // since the playlists are sorted in ascending order by - // bandwidth, the first viable variant is the best - if (!bandwidthBestVariant) { - bandwidthBestVariant = variant; - } - } - } - - i = bandwidthPlaylists.length; - - // sort variants by resolution - bandwidthPlaylists.sort(Hls.comparePlaylistResolution); - - // forget our old variant from above, - // or we might choose that in high-bandwidth scenarios - // (this could be the lowest bitrate rendition as we go through all of them above) - variant = null; - - width = parseInt(safeGetComputedStyle(this.tech_.el(), 'width'), 10); - height = parseInt(safeGetComputedStyle(this.tech_.el(), 'height'), 10); - - // iterate through the bandwidth-filtered playlists and find - // best rendition by player dimension - while (i--) { - variant = bandwidthPlaylists[i]; - - // ignore playlists without resolution information - if (!variant.attributes || !variant.attributes.RESOLUTION || !variant.attributes.RESOLUTION.width || !variant.attributes.RESOLUTION.height) { - continue; - } - - // since the playlists are sorted, the first variant that has - // dimensions less than or equal to the player size is the best - - var variantResolution = variant.attributes.RESOLUTION; - - if (variantResolution.width === width && variantResolution.height === height) { - // if we have the exact resolution as the player use it - resolutionPlusOne = null; - resolutionBestVariant = variant; - break; - } else if (variantResolution.width < width && variantResolution.height < height) { - // if both dimensions are less than the player use the - // previous (next-largest) variant - break; - } else if (!resolutionPlusOne || variantResolution.width < resolutionPlusOneAttribute.width && variantResolution.height < resolutionPlusOneAttribute.height) { - // If we still haven't found a good match keep a - // reference to the previous variant for the next loop - // iteration - - // By only saving variants if they are smaller than the - // previously saved variant, we ensure that we also pick - // the highest bandwidth variant that is just-larger-than - // the video player - resolutionPlusOne = variant; - resolutionPlusOneAttribute = resolutionPlusOne.attributes.RESOLUTION; - } - } - - // fallback chain of variants - return resolutionPlusOne || resolutionBestVariant || bandwidthBestVariant || sortedPlaylists[0]; - } - - /** - * Periodically request new segments and append video data. - */ - }, { - key: 'checkBuffer_', - value: function checkBuffer_() { - // calling this method directly resets any outstanding buffer checks - if (this.checkBufferTimeout_) { - window.clearTimeout(this.checkBufferTimeout_); - this.checkBufferTimeout_ = null; - } - - this.fillBuffer(); - this.drainBuffer(); - - // wait awhile and try again - this.checkBufferTimeout_ = window.setTimeout(this.checkBuffer_.bind(this), bufferCheckInterval); - } - - /** - * Setup a periodic task to request new segments if necessary and - * append bytes into the SourceBuffer. - */ - }, { - key: 'startCheckingBuffer_', - value: function startCheckingBuffer_() { - this.checkBuffer_(); - } - - /** - * Stop the periodic task requesting new segments and feeding the - * SourceBuffer. - */ - }, { - key: 'stopCheckingBuffer_', - value: function stopCheckingBuffer_() { - if (this.checkBufferTimeout_) { - window.clearTimeout(this.checkBufferTimeout_); - this.checkBufferTimeout_ = null; - } - } - - /** - * Determines whether there is enough video data currently in the buffer - * and downloads a new segment if the buffered time is less than the goal. - * @param seekToTime (optional) {number} the offset into the downloaded segment - * to seek to, in seconds - */ - }, { - key: 'fillBuffer', - value: function fillBuffer(mediaIndex) { - var tech = this.tech_; - var currentTime = tech.currentTime(); - var hasBufferedContent = this.tech_.buffered().length !== 0; - var currentBuffered = this.findBufferedRange_(); - var outsideBufferedRanges = !(currentBuffered && currentBuffered.length); - var currentBufferedEnd = 0; - var bufferedTime = 0; - var segment = undefined; - var segmentInfo = undefined; - var segmentTimestampOffset = undefined; - - // if preload is set to "none", do not download segments until playback is requested - if (this.loadingState_ !== 'segments') { - return; - } - - // if a video has not been specified, do nothing - if (!tech.currentSrc() || !this.playlists) { - return; - } - - // if there is a request already in flight, do nothing - if (this.segmentXhr_) { - return; - } - - // wait until the buffer is up to date - if (this.pendingSegment_) { - return; - } - - // if no segments are available, do nothing - if (this.playlists.state === 'HAVE_NOTHING' || !this.playlists.media() || !this.playlists.media().segments) { - return; - } - - // if a playlist switch is in progress, wait for it to finish - if (this.playlists.state === 'SWITCHING_MEDIA') { - return; - } - - if (typeof mediaIndex === 'undefined') { - if (currentBuffered && currentBuffered.length) { - currentBufferedEnd = currentBuffered.end(0); - mediaIndex = this.playlists.getMediaIndexForTime_(currentBufferedEnd); - bufferedTime = Math.max(0, currentBufferedEnd - currentTime); - - // if there is plenty of content in the buffer and we're not - // seeking, relax for awhile - if (bufferedTime >= Hls.GOAL_BUFFER_LENGTH) { - return; - } - } else { - mediaIndex = this.playlists.getMediaIndexForTime_(this.tech_.currentTime()); - } - } - segment = this.playlists.media().segments[mediaIndex]; - - // if the video has finished downloading - if (!segment) { - return; - } - - // we have entered a state where we are fetching the same segment, - // try to walk forward - if (this.lastSegmentLoaded_ && this.playlistUriToUrl(this.lastSegmentLoaded_.uri) === this.playlistUriToUrl(segment.uri) && this.lastSegmentLoaded_.byterange === segment.byterange) { - return this.fillBuffer(mediaIndex + 1); - } - - // package up all the work to append the segment - segmentInfo = { - // resolve the segment URL relative to the playlist - uri: this.playlistUriToUrl(segment.uri), - // the segment's mediaIndex & mediaSequence at the time it was requested - mediaIndex: mediaIndex, - mediaSequence: this.playlists.media().mediaSequence, - // the segment's playlist - playlist: this.playlists.media(), - // The state of the buffer when this segment was requested - currentBufferedEnd: currentBufferedEnd, - // unencrypted bytes of the segment - bytes: null, - // when a key is defined for this segment, the encrypted bytes - encryptedBytes: null, - // optionally, the decrypter that is unencrypting the segment - decrypter: null, - // the state of the buffer before a segment is appended will be - // stored here so that the actual segment duration can be - // determined after it has been appended - buffered: null, - // The target timestampOffset for this segment when we append it - // to the source buffer - timestampOffset: null - }; - - if (mediaIndex > 0) { - segmentTimestampOffset = Hls.Playlist.duration(segmentInfo.playlist, segmentInfo.playlist.mediaSequence + mediaIndex) + this.playlists.expired_; - } - - if (this.tech_.seeking() && outsideBufferedRanges) { - // If there are discontinuities in the playlist, we can't be sure of anything - // related to time so we reset the timestamp offset and start appending data - // anew on every seek - if (segmentInfo.playlist.discontinuityStarts.length) { - segmentInfo.timestampOffset = segmentTimestampOffset; - } - } else if (segment.discontinuity && currentBuffered.length) { - // If we aren't seeking and are crossing a discontinuity, we should set - // timestampOffset for new segments to be appended the end of the current - // buffered time-range - segmentInfo.timestampOffset = currentBuffered.end(0); - } else if (!hasBufferedContent && this.tech_.currentTime() > 0.05) { - // If we are trying to play at a position that is not zero but we aren't - // currently seeking according to the video element - segmentInfo.timestampOffset = segmentTimestampOffset; - } - - this.loadSegment(segmentInfo); - } - }, { - key: 'playlistUriToUrl', - value: function playlistUriToUrl(segmentRelativeUrl) { - var playListUrl = undefined; - - // resolve the segment URL relative to the playlist - if (this.playlists.media().uri === this.source_.src) { - playListUrl = (0, _resolveUrl2['default'])(this.source_.src, segmentRelativeUrl); - } else { - playListUrl = (0, _resolveUrl2['default'])((0, _resolveUrl2['default'])(this.source_.src, this.playlists.media().uri || ''), segmentRelativeUrl); - } - return playListUrl; - } - - /* - * Turns segment byterange into a string suitable for use in - * HTTP Range requests - */ - }, { - key: 'byterangeStr_', - value: function byterangeStr_(byterange) { - var byterangeStart = undefined; - var byterangeEnd = undefined; - - // `byterangeEnd` is one less than `offset + length` because the HTTP range - // header uses inclusive ranges - byterangeEnd = byterange.offset + byterange.length - 1; - byterangeStart = byterange.offset; - return 'bytes=' + byterangeStart + '-' + byterangeEnd; - } - - /* - * Defines headers for use in the xhr request for a particular segment. - */ - }, { - key: 'segmentXhrHeaders_', - value: function segmentXhrHeaders_(segment) { - var headers = {}; - - if ('byterange' in segment) { - headers.Range = this.byterangeStr_(segment.byterange); - } - return headers; - } - - /* - * Sets `bandwidth`, `segmentXhrTime`, and appends to the `bytesReceived. - * Expects an object with: - * * `roundTripTime` - the round trip time for the request we're setting the time for - * * `bandwidth` - the bandwidth we want to set - * * `bytesReceived` - amount of bytes downloaded - * `bandwidth` is the only required property. - */ - }, { - key: 'setBandwidth', - value: function setBandwidth(localXhr) { - // calculate the download bandwidth - this.segmentXhrTime = localXhr.roundTripTime; - this.bandwidth = localXhr.bandwidth; - this.bytesReceived += localXhr.bytesReceived || 0; - - this.tech_.trigger('bandwidthupdate'); - } - - /* - * Blacklists a playlist when an error occurs for a set amount of time - * making it unavailable for selection by the rendition selection algorithm - * and then forces a new playlist (rendition) selection. - */ - }, { - key: 'blacklistCurrentPlaylist_', - value: function blacklistCurrentPlaylist_(error) { - var currentPlaylist = undefined; - var nextPlaylist = undefined; - - // If the `error` was generated by the playlist loader, it will contain - // the playlist we were trying to load (but failed) and that should be - // blacklisted instead of the currently selected playlist which is likely - // out-of-date in this scenario - currentPlaylist = error.playlist || this.playlists.media(); - - // If there is no current playlist, then an error occurred while we were - // trying to load the master OR while we were disposing of the tech - if (!currentPlaylist) { - this.error = error; - return this.mediaSource.endOfStream('network'); - } - - // Blacklist this playlist - currentPlaylist.excludeUntil = Date.now() + blacklistDuration; - - // Select a new playlist - nextPlaylist = this.selectPlaylist(); - - if (nextPlaylist) { - _videoJs2['default'].log.warn('Problem encountered with the current ' + 'HLS playlist. Switching to another playlist.'); - - return this.playlists.media(nextPlaylist); - } - _videoJs2['default'].log.warn('Problem encountered with the current ' + 'HLS playlist. No suitable alternatives found.'); - // We have no more playlists we can select so we must fail - this.error = error; - return this.mediaSource.endOfStream('network'); - } - }, { - key: 'loadSegment', - value: function loadSegment(segmentInfo) { - var _this4 = this; - - var segment = segmentInfo.playlist.segments[segmentInfo.mediaIndex]; - var removeToTime = 0; - var seekable = this.seekable(); - var currentTime = this.tech_.currentTime(); - - // Chrome has a hard limit of 150mb of - // buffer and a very conservative "garbage collector" - // We manually clear out the old buffer to ensure - // we don't trigger the QuotaExceeded error - // on the source buffer during subsequent appends - if (this.sourceBuffer && !this.sourceBuffer.updating) { - // If we have a seekable range use that as the limit for what can be removed safely - // otherwise remove anything older than 1 minute before the current play head - if (seekable.length && seekable.start(0) > 0 && seekable.start(0) < currentTime) { - removeToTime = seekable.start(0); - } else { - removeToTime = currentTime - 60; - } - - if (removeToTime > 0) { - this.sourceBuffer.remove(0, removeToTime); - } - } - - // if the segment is encrypted, request the key - if (segment.key) { - this.fetchKey_(segment); - } - - // request the next segment - this.segmentXhr_ = Hls.xhr({ - uri: segmentInfo.uri, - responseType: 'arraybuffer', - withCredentials: this.source_.withCredentials, - // Set xhr timeout to 150% of the segment duration to allow us - // some time to switch renditions in the event of a catastrophic - // decrease in network performance or a server issue. - timeout: segment.duration * 1.5 * 1000, - headers: this.segmentXhrHeaders_(segment) - }, function (error, request) { - // This is a timeout of a previously aborted segment request - // so simply ignore it - if (!_this4.segmentXhr_ || request !== _this4.segmentXhr_) { - return; - } - - // the segment request is no longer outstanding - _this4.segmentXhr_ = null; - - // if a segment request times out, we may have better luck with another playlist - if (request.timedout) { - _this4.bandwidth = 1; - return _this4.playlists.media(_this4.selectPlaylist()); - } - - // otherwise, trigger a network error - if (!request.aborted && error) { - return _this4.blacklistCurrentPlaylist_({ - status: request.status, - message: 'HLS segment request error at URL: ' + segmentInfo.uri, - code: request.status >= 500 ? 4 : 2 - }); - } - - // stop processing if the request was aborted - if (!request.response) { - return; - } - - _this4.lastSegmentLoaded_ = segment; - _this4.setBandwidth(request); - - if (segment.key) { - segmentInfo.encryptedBytes = new Uint8Array(request.response); - } else { - segmentInfo.bytes = new Uint8Array(request.response); - } - - _this4.pendingSegment_ = segmentInfo; - - _this4.tech_.trigger('progress'); - _this4.drainBuffer(); - - // figure out what stream the next segment should be downloaded from - // with the updated bandwidth information - _this4.playlists.media(_this4.selectPlaylist()); - }); - } - }, { - key: 'drainBuffer', - value: function drainBuffer() { - var segmentInfo = undefined; - var mediaIndex = undefined; - var playlist = undefined; - var bytes = undefined; - var segment = undefined; - var decrypter = undefined; - var segIv = undefined; - - // if the buffer is empty or the source buffer hasn't been created - // yet, do nothing - if (!this.pendingSegment_ || !this.sourceBuffer) { - return; - } - - // the pending segment has already been appended and we're waiting - // for updateend to fire - if (this.pendingSegment_.buffered) { - return; - } - - // we can't append more data if the source buffer is busy processing - // what we've already sent - if (this.sourceBuffer.updating) { - return; - } - - segmentInfo = this.pendingSegment_; - mediaIndex = segmentInfo.mediaIndex; - playlist = segmentInfo.playlist; - bytes = segmentInfo.bytes; - segment = playlist.segments[mediaIndex]; - - if (segment.key && !bytes) { - // this is an encrypted segment - // if the key download failed, we want to skip this segment - // but if the key hasn't downloaded yet, we want to try again later - if (keyFailed(segment.key)) { - return this.blacklistCurrentPlaylist_({ - message: 'HLS segment key request error.', - code: 4 - }); - } else if (!segment.key.bytes) { - // waiting for the key bytes, try again later - return; - } else if (segmentInfo.decrypter) { - // decryption is in progress, try again later - return; - } - // if the media sequence is greater than 2^32, the IV will be incorrect - // assuming 10s segments, that would be about 1300 years - segIv = segment.key.iv || new Uint32Array([0, 0, 0, mediaIndex + playlist.mediaSequence]); - - // create a decrypter to incrementally decrypt the segment - decrypter = new Hls.Decrypter(segmentInfo.encryptedBytes, segment.key.bytes, segIv, function (error, localBytes) { - if (error) { - _videoJs2['default'].log.warn(error); - } - segmentInfo.bytes = localBytes; - }); - segmentInfo.decrypter = decrypter; - return; - } - - this.pendingSegment_.buffered = this.tech_.buffered(); - - if (segmentInfo.timestampOffset !== null) { - this.sourceBuffer.timestampOffset = segmentInfo.timestampOffset; - } - - // the segment is asynchronously added to the current buffered data - this.sourceBuffer.appendBuffer(bytes); - } - }, { - key: 'updateEndHandler_', - value: function updateEndHandler_() { - var segmentInfo = this.pendingSegment_; - var playlist = undefined; - var currentMediaIndex = undefined; - var currentBuffered = undefined; - var seekable = undefined; - var timelineUpdate = undefined; - var isEndOfStream = undefined; - - // stop here if the update errored or was aborted - if (!segmentInfo) { - this.pendingSegment_ = null; - return; - } - - // In Firefox, the updateend event is triggered for both removing from the buffer and - // adding to the buffer. To prevent this code from executing on removals, we wait for - // segmentInfo to have a filled in buffered value before we continue processing. - if (!segmentInfo.buffered) { - return; - } - - this.pendingSegment_ = null; - - playlist = segmentInfo.playlist; - currentMediaIndex = segmentInfo.mediaIndex + (segmentInfo.mediaSequence - playlist.mediaSequence); - currentBuffered = this.findBufferedRange_(); - isEndOfStream = detectEndOfStream(playlist, this.mediaSource, currentMediaIndex, currentBuffered); - - // if we switched renditions don't try to add segment timeline - // information to the playlist - if (segmentInfo.playlist.uri !== this.playlists.media().uri) { - if (isEndOfStream) { - return this.mediaSource.endOfStream(); - } - return this.fillBuffer(); - } - - // when seeking to the beginning of the seekable range, it's - // possible that imprecise timing information may cause the seek to - // end up earlier than the start of the range - // in that case, seek again - seekable = this.seekable(); - if (this.tech_.seeking() && currentBuffered.length === 0) { - if (seekable.length && this.tech_.currentTime() < seekable.start(0)) { - var next = this.findNextBufferedRange_(); - - if (next.length) { - _videoJs2['default'].log('tried seeking to', this.tech_.currentTime(), 'but that was too early, retrying at', next.start(0)); - this.tech_.setCurrentTime(next.start(0) + TIME_FUDGE_FACTOR); - } - } - } - - timelineUpdate = Hls.findSoleUncommonTimeRangesEnd_(segmentInfo.buffered, this.tech_.buffered()); - - // Update segment meta-data (duration and end-point) based on timeline - updateSegmentMetadata(playlist, currentMediaIndex, timelineUpdate); - - // If we decide to signal the end of stream, then we can return instead - // of trying to fetch more segments - if (isEndOfStream) { - return this.mediaSource.endOfStream(); - } - - if (timelineUpdate !== null || segmentInfo.buffered.length !== this.tech_.buffered().length) { - this.updateDuration(playlist); - // check if it's time to download the next segment - this.fillBuffer(); - return; - } - - // the last segment append must have been entirely in the - // already buffered time ranges. just buffer forward until we - // find a segment that adds to the buffered time ranges and - // improves subsequent media index calculations. - this.fillBuffer(currentMediaIndex + 1); - return; - } - - /** - * Attempt to retrieve the key for a particular media segment. - */ - }, { - key: 'fetchKey_', - value: function fetchKey_(segment) { - var _this5 = this; - - var key = undefined; - var settings = undefined; - var receiveKey = undefined; - - // if there is a pending XHR or no segments, don't do anything - if (this.keyXhr_) { - return; - } - - settings = this.options_; - - /** - * Handle a key XHR response. - */ - receiveKey = function (keyRecieved) { - return function (error, request) { - var view = undefined; - - _this5.keyXhr_ = null; - - if (error || !request.response || request.response.byteLength !== 16) { - keyRecieved.retries = keyRecieved.retries || 0; - keyRecieved.retries++; - if (!request.aborted) { - // try fetching again - _this5.fetchKey_(segment); - } - return; - } - - view = new DataView(request.response); - keyRecieved.bytes = new Uint32Array([view.getUint32(0), view.getUint32(4), view.getUint32(8), view.getUint32(12)]); - - // check to see if this allows us to make progress buffering now - _this5.checkBuffer_(); - }; - }; - - key = segment.key; - - // nothing to do if this segment is unencrypted - if (!key) { - return; - } - - // request the key if the retry limit hasn't been reached - if (!key.bytes && !keyFailed(key)) { - this.keyXhr_ = Hls.xhr({ - uri: this.playlistUriToUrl(key.uri), - responseType: 'arraybuffer', - withCredentials: settings.withCredentials - }, receiveKey(key)); - return; - } - } - }]); - - return HlsHandler; -})(Component); - -exports['default'] = HlsHandler; -HlsHandler.prototype.findBufferedRange_ = filterBufferedRanges(function (start, end, time) { - return start - TIME_FUDGE_FACTOR <= time && end + TIME_FUDGE_FACTOR >= time; -}); -/** - * Returns the TimeRanges that begin at or later than the specified - * time. - * @param time (optional) {number} the time to filter on. Defaults to - * currentTime. - * @return a new TimeRanges object. - */ -HlsHandler.prototype.findNextBufferedRange_ = filterBufferedRanges(function (start, end, time) { - return start - TIME_FUDGE_FACTOR >= time; -}); - -/** - * 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. - */ -var HlsSourceHandler = function HlsSourceHandler(mode) { - return { - canHandleSource: function canHandleSource(srcObj) { - return HlsSourceHandler.canPlayType(srcObj.type); - }, - handleSource: function handleSource(source, tech) { - if (mode === 'flash') { - // We need to trigger this asynchronously to give others the chance - // to bind to the event when a source is set at player creation - tech.setTimeout(function () { - tech.trigger('loadstart'); - }, 1); - } - tech.hls = new HlsHandler(tech, { - source: source, - mode: mode - }); - tech.hls.src(source.src); - return tech.hls; - }, - canPlayType: function canPlayType(type) { - return HlsSourceHandler.canPlayType(type); - } - }; -}; - -HlsSourceHandler.canPlayType = function (type) { - var mpegurlRE = /^application\/(?:x-|vnd\.apple\.)mpegurl/i; - - // favor native HLS support if it's available - if (Hls.supportsNativeHls) { - return false; - } - return mpegurlRE.test(type); -}; - -if (typeof _videoJs2['default'].MediaSource === 'undefined' || typeof _videoJs2['default'].URL === 'undefined') { - _videoJs2['default'].MediaSource = _videojsContribMediaSources.MediaSource; - _videoJs2['default'].URL = _videojsContribMediaSources.URL; -} - -// register source handlers with the appropriate techs -if (_videojsContribMediaSources.MediaSource.supportsNativeMediaSources()) { - _videoJs2['default'].getComponent('Html5').registerSourceHandler(HlsSourceHandler('html5')); -} -if (window.Uint8Array) { - _videoJs2['default'].getComponent('Flash').registerSourceHandler(HlsSourceHandler('flash')); -} - -_videoJs2['default'].HlsHandler = HlsHandler; -_videoJs2['default'].HlsSourceHandler = HlsSourceHandler; -_videoJs2['default'].Hls = Hls; -_videoJs2['default'].m3u8 = _m3u82['default']; - -exports['default'] = { - Hls: Hls, - HlsHandler: HlsHandler, - HlsSourceHandler: HlsSourceHandler -}; -module.exports = exports['default']; -}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{"./bin-utils":1,"./decrypter":5,"./m3u8":6,"./playlist":11,"./playlist-loader":10,"./resolve-url":12,"./xhr":14,"videojs-contrib-media-sources":28}]},{},[51])(51) -});
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