App-MHFS
view release on metacpan or search on metacpan
share/public_html/static/hls.js view on Meta::CPAN
} catch (e) {
exportedLogger = fakeLogger;
}
} else {
exportedLogger = fakeLogger;
}
};
var logger = exportedLogger;
/***/ }),
/* 1 */
/***/ (function(module, __webpack_exports__, __webpack_require__) {
"use strict";
/**
* @readonly
* @enum {string}
*/
var HlsEvents = {
// fired before MediaSource is attaching to media element - data: { media }
MEDIA_ATTACHING: 'hlsMediaAttaching',
// fired when MediaSource has been succesfully attached to media element - data: { }
MEDIA_ATTACHED: 'hlsMediaAttached',
// fired before detaching MediaSource from media element - data: { }
MEDIA_DETACHING: 'hlsMediaDetaching',
// fired when MediaSource has been detached from media element - data: { }
MEDIA_DETACHED: 'hlsMediaDetached',
// fired when we buffer is going to be reset - data: { }
BUFFER_RESET: 'hlsBufferReset',
// fired when we know about the codecs that we need buffers for to push into - data: {tracks : { container, codec, levelCodec, initSegment, metadata }}
BUFFER_CODECS: 'hlsBufferCodecs',
// fired when sourcebuffers have been created - data: { tracks : tracks }
BUFFER_CREATED: 'hlsBufferCreated',
// fired when we append a segment to the buffer - data: { segment: segment object }
BUFFER_APPENDING: 'hlsBufferAppending',
// fired when we are done with appending a media segment to the buffer - data : { parent : segment parent that triggered BUFFER_APPENDING, pending : nb of segments waiting for appending for this segment parent}
BUFFER_APPENDED: 'hlsBufferAppended',
// fired when the stream is finished and we want to notify the media buffer that there will be no more data - data: { }
BUFFER_EOS: 'hlsBufferEos',
// fired when the media buffer should be flushed - data { startOffset, endOffset }
BUFFER_FLUSHING: 'hlsBufferFlushing',
// fired when the media buffer has been flushed - data: { }
BUFFER_FLUSHED: 'hlsBufferFlushed',
// fired to signal that a manifest loading starts - data: { url : manifestURL}
MANIFEST_LOADING: 'hlsManifestLoading',
// fired after manifest has been loaded - data: { levels : [available quality levels], audioTracks : [ available audio tracks], url : manifestURL, stats : { trequest, tfirst, tload, mtime}}
MANIFEST_LOADED: 'hlsManifestLoaded',
// fired after manifest has been parsed - data: { levels : [available quality levels], firstLevel : index of first quality level appearing in Manifest}
MANIFEST_PARSED: 'hlsManifestParsed',
// fired when a level switch is requested - data: { level : id of new level }
LEVEL_SWITCHING: 'hlsLevelSwitching',
// fired when a level switch is effective - data: { level : id of new level }
LEVEL_SWITCHED: 'hlsLevelSwitched',
// fired when a level playlist loading starts - data: { url : level URL, level : id of level being loaded}
LEVEL_LOADING: 'hlsLevelLoading',
// fired when a level playlist loading finishes - data: { details : levelDetails object, level : id of loaded level, stats : { trequest, tfirst, tload, mtime} }
LEVEL_LOADED: 'hlsLevelLoaded',
// fired when a level's details have been updated based on previous details, after it has been loaded - data: { details : levelDetails object, level : id of updated level }
LEVEL_UPDATED: 'hlsLevelUpdated',
// fired when a level's PTS information has been updated after parsing a fragment - data: { details : levelDetails object, level : id of updated level, drift: PTS drift observed when parsing last fragment }
LEVEL_PTS_UPDATED: 'hlsLevelPtsUpdated',
// fired to notify that audio track lists has been updated - data: { audioTracks : audioTracks }
AUDIO_TRACKS_UPDATED: 'hlsAudioTracksUpdated',
// fired when an audio track switching is requested - data: { id : audio track id }
AUDIO_TRACK_SWITCHING: 'hlsAudioTrackSwitching',
// fired when an audio track switch actually occurs - data: { id : audio track id }
AUDIO_TRACK_SWITCHED: 'hlsAudioTrackSwitched',
// fired when an audio track loading starts - data: { url : audio track URL, id : audio track id }
AUDIO_TRACK_LOADING: 'hlsAudioTrackLoading',
// fired when an audio track loading finishes - data: { details : levelDetails object, id : audio track id, stats : { trequest, tfirst, tload, mtime } }
AUDIO_TRACK_LOADED: 'hlsAudioTrackLoaded',
// fired to notify that subtitle track lists has been updated - data: { subtitleTracks : subtitleTracks }
SUBTITLE_TRACKS_UPDATED: 'hlsSubtitleTracksUpdated',
// fired when an subtitle track switch occurs - data: { id : subtitle track id }
SUBTITLE_TRACK_SWITCH: 'hlsSubtitleTrackSwitch',
// fired when a subtitle track loading starts - data: { url : subtitle track URL, id : subtitle track id }
SUBTITLE_TRACK_LOADING: 'hlsSubtitleTrackLoading',
// fired when a subtitle track loading finishes - data: { details : levelDetails object, id : subtitle track id, stats : { trequest, tfirst, tload, mtime } }
SUBTITLE_TRACK_LOADED: 'hlsSubtitleTrackLoaded',
// fired when a subtitle fragment has been processed - data: { success : boolean, frag : the processed frag }
SUBTITLE_FRAG_PROCESSED: 'hlsSubtitleFragProcessed',
// fired when the first timestamp is found - data: { id : demuxer id, initPTS: initPTS, frag : fragment object }
INIT_PTS_FOUND: 'hlsInitPtsFound',
// fired when a fragment loading starts - data: { frag : fragment object }
FRAG_LOADING: 'hlsFragLoading',
// fired when a fragment loading is progressing - data: { frag : fragment object, { trequest, tfirst, loaded } }
FRAG_LOAD_PROGRESS: 'hlsFragLoadProgress',
// Identifier for fragment load aborting for emergency switch down - data: { frag : fragment object }
FRAG_LOAD_EMERGENCY_ABORTED: 'hlsFragLoadEmergencyAborted',
// fired when a fragment loading is completed - data: { frag : fragment object, payload : fragment payload, stats : { trequest, tfirst, tload, length } }
FRAG_LOADED: 'hlsFragLoaded',
// fired when a fragment has finished decrypting - data: { id : demuxer id, frag: fragment object, payload : fragment payload, stats : { tstart, tdecrypt } }
FRAG_DECRYPTED: 'hlsFragDecrypted',
// fired when Init Segment has been extracted from fragment - data: { id : demuxer id, frag: fragment object, moov : moov MP4 box, codecs : codecs found while parsing fragment }
FRAG_PARSING_INIT_SEGMENT: 'hlsFragParsingInitSegment',
// fired when parsing sei text is completed - data: { id : demuxer id, frag: fragment object, samples : [ sei samples pes ] }
FRAG_PARSING_USERDATA: 'hlsFragParsingUserdata',
// fired when parsing id3 is completed - data: { id : demuxer id, frag: fragment object, samples : [ id3 samples pes ] }
FRAG_PARSING_METADATA: 'hlsFragParsingMetadata',
// fired when data have been extracted from fragment - data: { id : demuxer id, frag: fragment object, data1 : moof MP4 box or TS fragments, data2 : mdat MP4 box or null}
FRAG_PARSING_DATA: 'hlsFragParsingData',
// fired when fragment parsing is completed - data: { id : demuxer id, frag: fragment object }
FRAG_PARSED: 'hlsFragParsed',
// fired when fragment remuxed MP4 boxes have all been appended into SourceBuffer - data: { id : demuxer id, frag : fragment object, stats : { trequest, tfirst, tload, tparsed, tbuffered, length, bwEstimate } }
FRAG_BUFFERED: 'hlsFragBuffered',
// fired when fragment matching with current media position is changing - data : { id : demuxer id, frag : fragment object }
FRAG_CHANGED: 'hlsFragChanged',
// Identifier for a FPS drop event - data: { curentDropped, currentDecoded, totalDroppedFrames }
FPS_DROP: 'hlsFpsDrop',
// triggered when FPS drop triggers auto level capping - data: { level, droppedlevel }
FPS_DROP_LEVEL_CAPPING: 'hlsFpsDropLevelCapping',
// Identifier for an error event - data: { type : error type, details : error details, fatal : if true, hls.js cannot/will not try to recover, if false, hls.js will try to recover,other error specific data }
ERROR: 'hlsError',
// fired when hls.js instance starts destroying. Different from MEDIA_DETACHED as one could want to detach and reattach a media to the instance of hls.js to handle mid-rolls for example - data: { }
DESTROYING: 'hlsDestroying',
// fired when a decrypt key loading starts - data: { frag : fragment object }
KEY_LOADING: 'hlsKeyLoading',
// fired when a decrypt key loading is completed - data: { frag : fragment object, payload : key payload, stats : { trequest, tfirst, tload, length } }
KEY_LOADED: 'hlsKeyLoaded',
// fired upon stream controller state transitions - data: { previousState, nextState }
STREAM_STATE_TRANSITION: 'hlsStreamStateTransition'
};
/* harmony default export */ __webpack_exports__["a"] = (HlsEvents);
/***/ }),
/* 2 */
/***/ (function(module, __webpack_exports__, __webpack_require__) {
"use strict";
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "b", function() { return ErrorTypes; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "a", function() { return ErrorDetails; });
var ErrorTypes = {
// Identifier for a network error (loading error / timeout ...)
NETWORK_ERROR: 'networkError',
// Identifier for a media Error (video/parsing/mediasource error)
MEDIA_ERROR: 'mediaError',
// EME (encrypted media extensions) errors
KEY_SYSTEM_ERROR: 'keySystemError',
// Identifier for a mux Error (demuxing/remuxing)
MUX_ERROR: 'muxError',
// Identifier for all other errors
OTHER_ERROR: 'otherError'
};
/**
* @enum {ErrorDetails}
* @typedef {string} ErrorDetail
*/
var ErrorDetails = {
KEY_SYSTEM_NO_KEYS: 'keySystemNoKeys',
KEY_SYSTEM_NO_ACCESS: 'keySystemNoAccess',
KEY_SYSTEM_NO_SESSION: 'keySystemNoSession',
KEY_SYSTEM_LICENSE_REQUEST_FAILED: 'keySystemLicenseRequestFailed',
// Identifier for a manifest load error - data: { url : faulty URL, response : { code: error code, text: error text }}
MANIFEST_LOAD_ERROR: 'manifestLoadError',
// Identifier for a manifest load timeout - data: { url : faulty URL, response : { code: error code, text: error text }}
MANIFEST_LOAD_TIMEOUT: 'manifestLoadTimeOut',
// Identifier for a manifest parsing error - data: { url : faulty URL, reason : error reason}
MANIFEST_PARSING_ERROR: 'manifestParsingError',
// Identifier for a manifest with only incompatible codecs error - data: { url : faulty URL, reason : error reason}
MANIFEST_INCOMPATIBLE_CODECS_ERROR: 'manifestIncompatibleCodecsError',
// Identifier for a level load error - data: { url : faulty URL, response : { code: error code, text: error text }}
LEVEL_LOAD_ERROR: 'levelLoadError',
// Identifier for a level load timeout - data: { url : faulty URL, response : { code: error code, text: error text }}
LEVEL_LOAD_TIMEOUT: 'levelLoadTimeOut',
// Identifier for a level switch error - data: { level : faulty level Id, event : error description}
LEVEL_SWITCH_ERROR: 'levelSwitchError',
// Identifier for an audio track load error - data: { url : faulty URL, response : { code: error code, text: error text }}
AUDIO_TRACK_LOAD_ERROR: 'audioTrackLoadError',
// Identifier for an audio track load timeout - data: { url : faulty URL, response : { code: error code, text: error text }}
AUDIO_TRACK_LOAD_TIMEOUT: 'audioTrackLoadTimeOut',
// Identifier for fragment load error - data: { frag : fragment object, response : { code: error code, text: error text }}
FRAG_LOAD_ERROR: 'fragLoadError',
// Identifier for fragment load timeout error - data: { frag : fragment object}
FRAG_LOAD_TIMEOUT: 'fragLoadTimeOut',
// Identifier for a fragment decryption error event - data: {id : demuxer Id,frag: fragment object, reason : parsing error description }
FRAG_DECRYPT_ERROR: 'fragDecryptError',
// Identifier for a fragment parsing error event - data: { id : demuxer Id, reason : parsing error description }
// will be renamed DEMUX_PARSING_ERROR and switched to MUX_ERROR in the next major release
FRAG_PARSING_ERROR: 'fragParsingError',
// Identifier for a remux alloc error event - data: { id : demuxer Id, frag : fragment object, bytes : nb of bytes on which allocation failed , reason : error text }
REMUX_ALLOC_ERROR: 'remuxAllocError',
// Identifier for decrypt key load error - data: { frag : fragment object, response : { code: error code, text: error text }}
KEY_LOAD_ERROR: 'keyLoadError',
// Identifier for decrypt key load timeout error - data: { frag : fragment object}
KEY_LOAD_TIMEOUT: 'keyLoadTimeOut',
// Triggered when an exception occurs while adding a sourceBuffer to MediaSource - data : { err : exception , mimeType : mimeType }
BUFFER_ADD_CODEC_ERROR: 'bufferAddCodecError',
// Identifier for a buffer append error - data: append error description
BUFFER_APPEND_ERROR: 'bufferAppendError',
// Identifier for a buffer appending error event - data: appending error description
BUFFER_APPENDING_ERROR: 'bufferAppendingError',
// Identifier for a buffer stalled error event
BUFFER_STALLED_ERROR: 'bufferStalledError',
// Identifier for a buffer full event
BUFFER_FULL_ERROR: 'bufferFullError',
// Identifier for a buffer seek over hole event
BUFFER_SEEK_OVER_HOLE: 'bufferSeekOverHole',
// Identifier for a buffer nudge on stall (playback is stuck although currentTime is in a buffered area)
BUFFER_NUDGE_ON_STALL: 'bufferNudgeOnStall',
// Identifier for an internal exception happening inside hls.js while handling an event
INTERNAL_EXCEPTION: 'internalException'
};
/***/ }),
/* 3 */
/***/ (function(module, __webpack_exports__, __webpack_require__) {
"use strict";
/* harmony export (immutable) */ __webpack_exports__["a"] = getSelfScope;
function getSelfScope() {
// see https://stackoverflow.com/a/11237259/589493
if (typeof window === 'undefined') {
/* eslint-disable-next-line no-undef */
return self;
} else {
return window;
}
}
/***/ }),
/* 4 */
/***/ (function(module, exports, __webpack_require__) {
// see https://tools.ietf.org/html/rfc1808
/* jshint ignore:start */
(function(root) {
/* jshint ignore:end */
var URL_REGEX = /^((?:[a-zA-Z0-9+\-.]+:)?)(\/\/[^\/\;?#]*)?(.*?)??(;.*?)?(\?.*?)?(#.*?)?$/;
var FIRST_SEGMENT_REGEX = /^([^\/;?#]*)(.*)$/;
var SLASH_DOT_REGEX = /(?:\/|^)\.(?=\/)/g;
var SLASH_DOT_DOT_REGEX = /(?:\/|^)\.\.\/(?!\.\.\/).*?(?=\/)/g;
var URLToolkit = { // jshint ignore:line
// If opts.alwaysNormalize is true then the path will always be normalized even when it starts with / or //
// E.g
// With opts.alwaysNormalize = false (default, spec compliant)
// http://a.com/b/cd + /e/f/../g => http://a.com/e/f/../g
// With opts.alwaysNormalize = true (not spec compliant)
// http://a.com/b/cd + /e/f/../g => http://a.com/e/g
buildAbsoluteURL: function(baseURL, relativeURL, opts) {
opts = opts || {};
// remove any remaining space and CRLF
baseURL = baseURL.trim();
relativeURL = relativeURL.trim();
if (!relativeURL) {
// 2a) If the embedded URL is entirely empty, it inherits the
// entire base URL (i.e., is set equal to the base URL)
// and we are done.
if (!opts.alwaysNormalize) {
return baseURL;
}
var basePartsForNormalise = this.parseURL(baseURL);
if (!baseParts) {
throw new Error('Error trying to parse base URL.');
}
basePartsForNormalise.path = URLToolkit.normalizePath(basePartsForNormalise.path);
return URLToolkit.buildURLFromParts(basePartsForNormalise);
}
var relativeParts = this.parseURL(relativeURL);
if (!relativeParts) {
throw new Error('Error trying to parse relative URL.');
}
if (relativeParts.scheme) {
// 2b) If the embedded URL starts with a scheme name, it is
// interpreted as an absolute URL and we are done.
if (!opts.alwaysNormalize) {
return relativeURL;
}
relativeParts.path = URLToolkit.normalizePath(relativeParts.path);
return URLToolkit.buildURLFromParts(relativeParts);
}
var baseParts = this.parseURL(baseURL);
if (!baseParts) {
throw new Error('Error trying to parse base URL.');
}
if (!baseParts.netLoc && baseParts.path && baseParts.path[0] !== '/') {
// If netLoc missing and path doesn't start with '/', assume everthing before the first '/' is the netLoc
// This causes 'example.com/a' to be handled as '//example.com/a' instead of '/example.com/a'
var pathParts = FIRST_SEGMENT_REGEX.exec(baseParts.path);
baseParts.netLoc = pathParts[1];
baseParts.path = pathParts[2];
}
if (baseParts.netLoc && !baseParts.path) {
baseParts.path = '/';
}
var builtParts = {
// 2c) Otherwise, the embedded URL inherits the scheme of
// the base URL.
scheme: baseParts.scheme,
netLoc: relativeParts.netLoc,
path: null,
params: relativeParts.params,
query: relativeParts.query,
fragment: relativeParts.fragment
};
if (!relativeParts.netLoc) {
// 3) If the embedded URL's <net_loc> is non-empty, we skip to
// Step 7. Otherwise, the embedded URL inherits the <net_loc>
// (if any) of the base URL.
builtParts.netLoc = baseParts.netLoc;
// 4) If the embedded URL path is preceded by a slash "/", the
// path is not relative and we skip to Step 7.
if (relativeParts.path[0] !== '/') {
if (!relativeParts.path) {
// 5) If the embedded URL path is empty (and not preceded by a
// slash), then the embedded URL inherits the base URL path
builtParts.path = baseParts.path;
// 5a) if the embedded URL's <params> is non-empty, we skip to
// step 7; otherwise, it inherits the <params> of the base
// URL (if any) and
if (!relativeParts.params) {
builtParts.params = baseParts.params;
// 5b) if the embedded URL's <query> is non-empty, we skip to
// step 7; otherwise, it inherits the <query> of the base
// URL (if any) and we skip to step 7.
if (!relativeParts.query) {
builtParts.query = baseParts.query;
}
}
} else {
// 6) The last segment of the base URL's path (anything
// following the rightmost slash "/", or the entire path if no
// slash is present) is removed and the embedded URL's path is
// appended in its place.
var baseURLPath = baseParts.path;
var newPath = baseURLPath.substring(0, baseURLPath.lastIndexOf('/') + 1) + relativeParts.path;
builtParts.path = URLToolkit.normalizePath(newPath);
}
}
}
if (builtParts.path === null) {
builtParts.path = opts.alwaysNormalize ? URLToolkit.normalizePath(relativeParts.path) : relativeParts.path;
}
return URLToolkit.buildURLFromParts(builtParts);
},
parseURL: function(url) {
var parts = URL_REGEX.exec(url);
if (!parts) {
return null;
}
return {
scheme: parts[1] || '',
netLoc: parts[2] || '',
path: parts[3] || '',
params: parts[4] || '',
query: parts[5] || '',
fragment: parts[6] || ''
};
},
normalizePath: function(path) {
// The following operations are
// then applied, in order, to the new path:
// 6a) All occurrences of "./", where "." is a complete path
// segment, are removed.
// 6b) If the path ends with "." as a complete path segment,
// that "." is removed.
path = path.split('').reverse().join('').replace(SLASH_DOT_REGEX, '');
// 6c) All occurrences of "<segment>/../", where <segment> is a
// complete path segment not equal to "..", are removed.
// Removal of these path segments is performed iteratively,
// removing the leftmost matching pattern on each iteration,
// until no matching pattern remains.
// 6d) If the path ends with "<segment>/..", where <segment> is a
// complete path segment not equal to "..", that
// "<segment>/.." is removed.
while (path.length !== (path = path.replace(SLASH_DOT_DOT_REGEX, '')).length) {} // jshint ignore:line
return path.split('').reverse().join('');
},
buildURLFromParts: function(parts) {
return parts.scheme + parts.netLoc + parts.path + parts.params + parts.query + parts.fragment;
}
};
/* jshint ignore:start */
if(true)
module.exports = URLToolkit;
else if(typeof define === 'function' && define.amd)
define([], function() { return URLToolkit; });
else if(typeof exports === 'object')
exports["URLToolkit"] = URLToolkit;
else
root["URLToolkit"] = URLToolkit;
})(this);
/* jshint ignore:end */
/***/ }),
/* 5 */
/***/ (function(module, __webpack_exports__, __webpack_require__) {
"use strict";
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "b", function() { return utf8ArrayToStr; });
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
/**
* ID3 parser
*/
var ID3 = function () {
function ID3() {
_classCallCheck(this, ID3);
}
/**
* Returns true if an ID3 header can be found at offset in data
* @param {Uint8Array} data - The data to search in
* @param {number} offset - The offset at which to start searching
* @return {boolean} - True if an ID3 header is found
*/
ID3.isHeader = function isHeader(data, offset) {
/*
* http://id3.org/id3v2.3.0
* [0] = 'I'
* [1] = 'D'
* [2] = '3'
* [3,4] = {Version}
* [5] = {Flags}
* [6-9] = {ID3 Size}
*
* An ID3v2 tag can be detected with the following pattern:
* $49 44 33 yy yy xx zz zz zz zz
* Where yy is less than $FF, xx is the 'flags' byte and zz is less than $80
*/
if (offset + 10 <= data.length) {
// look for 'ID3' identifier
if (data[offset] === 0x49 && data[offset + 1] === 0x44 && data[offset + 2] === 0x33) {
// check version is within range
if (data[offset + 3] < 0xFF && data[offset + 4] < 0xFF) {
// check size is within range
if (data[offset + 6] < 0x80 && data[offset + 7] < 0x80 && data[offset + 8] < 0x80 && data[offset + 9] < 0x80) {
return true;
share/public_html/static/hls.js view on Meta::CPAN
* timescale values for any declared tracks. Timescale values indicate the
* number of clock ticks per second to assume for time-based values
* elsewhere in the MP4.
*
* To determine the start time of an MP4, you need two pieces of
* information: the timescale unit and the earliest base media decode
* time. Multiple timescales can be specified within an MP4 but the
* base media decode time is always expressed in the timescale from
* the media header box for the track:
* ```
* moov > trak > mdia > mdhd.timescale
* moov > trak > mdia > hdlr
* ```
* @param init {Uint8Array} the bytes of the init segment
* @return {object} a hash of track type to timescale values or null if
* the init segment is malformed.
*/
MP4Demuxer.parseInitSegment = function parseInitSegment(initSegment) {
var result = [];
var traks = MP4Demuxer.findBox(initSegment, ['moov', 'trak']);
traks.forEach(function (trak) {
var tkhd = MP4Demuxer.findBox(trak, ['tkhd'])[0];
if (tkhd) {
var version = tkhd.data[tkhd.start];
var index = version === 0 ? 12 : 20;
var trackId = MP4Demuxer.readUint32(tkhd, index);
var mdhd = MP4Demuxer.findBox(trak, ['mdia', 'mdhd'])[0];
if (mdhd) {
version = mdhd.data[mdhd.start];
index = version === 0 ? 12 : 20;
var timescale = MP4Demuxer.readUint32(mdhd, index);
var hdlr = MP4Demuxer.findBox(trak, ['mdia', 'hdlr'])[0];
if (hdlr) {
var hdlrType = MP4Demuxer.bin2str(hdlr.data.subarray(hdlr.start + 8, hdlr.start + 12));
var type = { 'soun': 'audio', 'vide': 'video' }[hdlrType];
if (type) {
// extract codec info. TODO : parse codec details to be able to build MIME type
var codecBox = MP4Demuxer.findBox(trak, ['mdia', 'minf', 'stbl', 'stsd']);
if (codecBox.length) {
codecBox = codecBox[0];
var codecType = MP4Demuxer.bin2str(codecBox.data.subarray(codecBox.start + 12, codecBox.start + 16));
__WEBPACK_IMPORTED_MODULE_0__utils_logger__["b" /* logger */].log('MP4Demuxer:' + type + ':' + codecType + ' found');
}
result[trackId] = { timescale: timescale, type: type };
result[type] = { timescale: timescale, id: trackId };
}
}
}
}
});
return result;
};
/**
* Determine the base media decode start time, in seconds, for an MP4
* fragment. If multiple fragments are specified, the earliest time is
* returned.
*
* The base media decode time can be parsed from track fragment
* metadata:
* ```
* moof > traf > tfdt.baseMediaDecodeTime
* ```
* It requires the timescale value from the mdhd to interpret.
*
* @param timescale {object} a hash of track ids to timescale values.
* @return {number} the earliest base media decode start time for the
* fragment, in seconds
*/
MP4Demuxer.getStartDTS = function getStartDTS(initData, fragment) {
var trafs = void 0,
baseTimes = void 0,
result = void 0;
// we need info from two childrend of each track fragment box
trafs = MP4Demuxer.findBox(fragment, ['moof', 'traf']);
// determine the start times for each track
baseTimes = [].concat.apply([], trafs.map(function (traf) {
return MP4Demuxer.findBox(traf, ['tfhd']).map(function (tfhd) {
var id = void 0,
scale = void 0,
baseTime = void 0;
// get the track id from the tfhd
id = MP4Demuxer.readUint32(tfhd, 4);
// assume a 90kHz clock if no timescale was specified
scale = initData[id].timescale || 90e3;
// get the base media decode time from the tfdt
baseTime = MP4Demuxer.findBox(traf, ['tfdt']).map(function (tfdt) {
var version = void 0,
result = void 0;
version = tfdt.data[tfdt.start];
result = MP4Demuxer.readUint32(tfdt, 4);
if (version === 1) {
result *= Math.pow(2, 32);
result += MP4Demuxer.readUint32(tfdt, 8);
}
return result;
})[0];
// convert base time to seconds
return baseTime / scale;
});
}));
// return the minimum
result = Math.min.apply(null, baseTimes);
return isFinite(result) ? result : 0;
};
MP4Demuxer.offsetStartDTS = function offsetStartDTS(initData, fragment, timeOffset) {
MP4Demuxer.findBox(fragment, ['moof', 'traf']).map(function (traf) {
return MP4Demuxer.findBox(traf, ['tfhd']).map(function (tfhd) {
// get the track id from the tfhd
var id = MP4Demuxer.readUint32(tfhd, 4);
// assume a 90kHz clock if no timescale was specified
var timescale = initData[id].timescale || 90e3;
// get the base media decode time from the tfdt
MP4Demuxer.findBox(traf, ['tfdt']).map(function (tfdt) {
var version = tfdt.data[tfdt.start];
var baseMediaDecodeTime = MP4Demuxer.readUint32(tfdt, 4);
if (version === 0) {
MP4Demuxer.writeUint32(tfdt, 4, baseMediaDecodeTime - timeOffset * timescale);
} else {
baseMediaDecodeTime *= Math.pow(2, 32);
baseMediaDecodeTime += MP4Demuxer.readUint32(tfdt, 8);
baseMediaDecodeTime -= timeOffset * timescale;
baseMediaDecodeTime = Math.max(baseMediaDecodeTime, 0);
var upper = Math.floor(baseMediaDecodeTime / (UINT32_MAX + 1));
var lower = Math.floor(baseMediaDecodeTime % (UINT32_MAX + 1));
MP4Demuxer.writeUint32(tfdt, 4, upper);
MP4Demuxer.writeUint32(tfdt, 8, lower);
}
});
});
});
};
// feed incoming data to the front of the parsing pipeline
MP4Demuxer.prototype.append = function append(data, timeOffset, contiguous, accurateTimeOffset) {
var initData = this.initData;
if (!initData) {
this.resetInitSegment(data, this.audioCodec, this.videoCodec, false);
initData = this.initData;
}
var startDTS = void 0,
initPTS = this.initPTS;
if (initPTS === undefined) {
var _startDTS = MP4Demuxer.getStartDTS(initData, data);
this.initPTS = initPTS = _startDTS - timeOffset;
this.observer.trigger(__WEBPACK_IMPORTED_MODULE_1__events__["a" /* default */].INIT_PTS_FOUND, { initPTS: initPTS });
}
MP4Demuxer.offsetStartDTS(initData, data, initPTS);
startDTS = MP4Demuxer.getStartDTS(initData, data);
this.remuxer.remux(initData.audio, initData.video, null, null, startDTS, contiguous, accurateTimeOffset, data);
};
MP4Demuxer.prototype.destroy = function destroy() {};
return MP4Demuxer;
}();
/* harmony default export */ __webpack_exports__["a"] = (MP4Demuxer);
/***/ }),
/* 9 */
/***/ (function(module, __webpack_exports__, __webpack_require__) {
"use strict";
share/public_html/static/hls.js view on Meta::CPAN
// import Hex from '../utils/hex';
// We are using fixed track IDs for driving the MP4 remuxer
// instead of following the TS PIDs.
// There is no reason not to do this and some browsers/SourceBuffer-demuxers
// may not like if there are TrackID "switches"
// See https://github.com/video-dev/hls.js/issues/1331
// Here we are mapping our internal track types to constant MP4 track IDs
// With MSE currently one can only have one track of each, and we are muxing
// whatever video/audio rendition in them.
var RemuxerTrackIdConfig = {
video: 1,
audio: 2,
id3: 3,
text: 4
};
var tsdemuxer_TSDemuxer = function () {
function TSDemuxer(observer, remuxer, config, typeSupported) {
tsdemuxer__classCallCheck(this, TSDemuxer);
this.observer = observer;
this.config = config;
this.typeSupported = typeSupported;
this.remuxer = remuxer;
this.sampleAes = null;
}
TSDemuxer.prototype.setDecryptData = function setDecryptData(decryptdata) {
if (decryptdata != null && decryptdata.key != null && decryptdata.method === 'SAMPLE-AES') {
this.sampleAes = new sample_aes(this.observer, this.config, decryptdata, this.discardEPB);
} else {
this.sampleAes = null;
}
};
TSDemuxer.probe = function probe(data) {
var syncOffset = TSDemuxer._syncOffset(data);
if (syncOffset < 0) {
return false;
} else {
if (syncOffset) {
logger["b" /* logger */].warn('MPEG2-TS detected but first sync word found @ offset ' + syncOffset + ', junk ahead ?');
}
return true;
}
};
TSDemuxer._syncOffset = function _syncOffset(data) {
// scan 1000 first bytes
var scanwindow = Math.min(1000, data.length - 3 * 188);
var i = 0;
while (i < scanwindow) {
// a TS fragment should contain at least 3 TS packets, a PAT, a PMT, and one PID, each starting with 0x47
if (data[i] === 0x47 && data[i + 188] === 0x47 && data[i + 2 * 188] === 0x47) {
return i;
} else {
i++;
}
}
return -1;
};
/**
* Creates a track model internal to demuxer used to drive remuxing input
*
* @param {string} type 'audio' | 'video' | 'id3' | 'text'
* @param {number} duration
* @return {object} TSDemuxer's internal track model
*/
TSDemuxer.createTrack = function createTrack(type, duration) {
return {
container: type === 'video' || type === 'audio' ? 'video/mp2t' : undefined,
type: type,
id: RemuxerTrackIdConfig[type],
pid: -1,
inputTimeScale: 90000,
sequenceNumber: 0,
samples: [],
len: 0,
dropped: type === 'video' ? 0 : undefined,
isAAC: type === 'audio' ? true : undefined,
duration: type === 'audio' ? duration : undefined
};
};
/**
* Initializes a new init segment on the demuxer/remuxer interface. Needed for discontinuities/track-switches (or at stream start)
* Resets all internal track instances of the demuxer.
*
* @override Implements generic demuxing/remuxing interface (see DemuxerInline)
* @param {object} initSegment
* @param {string} audioCodec
* @param {string} videoCodec
* @param {number} duration (in TS timescale = 90kHz)
*/
TSDemuxer.prototype.resetInitSegment = function resetInitSegment(initSegment, audioCodec, videoCodec, duration) {
this.pmtParsed = false;
this._pmtId = -1;
this._avcTrack = TSDemuxer.createTrack('video', duration);
this._audioTrack = TSDemuxer.createTrack('audio', duration);
this._id3Track = TSDemuxer.createTrack('id3', duration);
this._txtTrack = TSDemuxer.createTrack('text', duration);
// flush any partial content
this.aacOverFlow = null;
this.aacLastPTS = null;
this.avcSample = null;
this.audioCodec = audioCodec;
share/public_html/static/hls.js view on Meta::CPAN
break;
case 0:
if (stt) {
offset += data[offset] + 1;
}
pmtId = this._pmtId = parsePAT(data, offset);
break;
case pmtId:
if (stt) {
offset += data[offset] + 1;
}
var parsedPIDs = parsePMT(data, offset, this.typeSupported.mpeg === true || this.typeSupported.mp3 === true, this.sampleAes != null);
// only update track id if track PID found while parsing PMT
// this is to avoid resetting the PID to -1 in case
// track PID transiently disappears from the stream
// this could happen in case of transient missing audio samples for example
// NOTE this is only the PID of the track as found in TS,
// but we are not using this for MP4 track IDs.
avcId = parsedPIDs.avc;
if (avcId > 0) {
avcTrack.pid = avcId;
}
audioId = parsedPIDs.audio;
if (audioId > 0) {
audioTrack.pid = audioId;
audioTrack.isAAC = parsedPIDs.isAAC;
}
id3Id = parsedPIDs.id3;
if (id3Id > 0) {
id3Track.pid = id3Id;
}
if (unknownPIDs && !pmtParsed) {
logger["b" /* logger */].log('reparse from beginning');
unknownPIDs = false;
// we set it to -188, the += 188 in the for loop will reset start to 0
start = syncOffset - 188;
}
pmtParsed = this.pmtParsed = true;
break;
case 17:
case 0x1fff:
break;
default:
unknownPIDs = true;
break;
}
} else {
this.observer.trigger(events["a" /* default */].ERROR, { type: errors["b" /* ErrorTypes */].MEDIA_ERROR, details: errors["a" /* ErrorDetails */].FRAG_PARSING_ERROR, fatal: false, reason: 'TS packet did not start with 0x47' });
}
}
// try to parse last PES packets
if (avcData && (pes = parsePES(avcData)) && pes.pts !== undefined) {
parseAVCPES(pes, true);
avcTrack.pesData = null;
} else {
// either avcData null or PES truncated, keep it for next frag parsing
avcTrack.pesData = avcData;
}
if (audioData && (pes = parsePES(audioData)) && pes.pts !== undefined) {
if (audioTrack.isAAC) {
parseAACPES(pes);
} else {
parseMPEGPES(pes);
}
audioTrack.pesData = null;
} else {
if (audioData && audioData.size) {
logger["b" /* logger */].log('last AAC PES packet truncated,might overlap between fragments');
}
// either audioData null or PES truncated, keep it for next frag parsing
audioTrack.pesData = audioData;
}
if (id3Data && (pes = parsePES(id3Data)) && pes.pts !== undefined) {
parseID3PES(pes);
id3Track.pesData = null;
} else {
// either id3Data null or PES truncated, keep it for next frag parsing
id3Track.pesData = id3Data;
}
if (this.sampleAes == null) {
this.remuxer.remux(audioTrack, avcTrack, id3Track, this._txtTrack, timeOffset, contiguous, accurateTimeOffset);
} else {
this.decryptAndRemux(audioTrack, avcTrack, id3Track, this._txtTrack, timeOffset, contiguous, accurateTimeOffset);
}
};
TSDemuxer.prototype.decryptAndRemux = function decryptAndRemux(audioTrack, videoTrack, id3Track, textTrack, timeOffset, contiguous, accurateTimeOffset) {
if (audioTrack.samples && audioTrack.isAAC) {
var localthis = this;
this.sampleAes.decryptAacSamples(audioTrack.samples, 0, function () {
localthis.decryptAndRemuxAvc(audioTrack, videoTrack, id3Track, textTrack, timeOffset, contiguous, accurateTimeOffset);
});
} else {
this.decryptAndRemuxAvc(audioTrack, videoTrack, id3Track, textTrack, timeOffset, contiguous, accurateTimeOffset);
}
};
TSDemuxer.prototype.decryptAndRemuxAvc = function decryptAndRemuxAvc(audioTrack, videoTrack, id3Track, textTrack, timeOffset, contiguous, accurateTimeOffset) {
if (videoTrack.samples) {
var localthis = this;
this.sampleAes.decryptAvcSamples(videoTrack.samples, 0, 0, function () {
localthis.remuxer.remux(audioTrack, videoTrack, id3Track, textTrack, timeOffset, contiguous, accurateTimeOffset);
});
} else {
this.remuxer.remux(audioTrack, videoTrack, id3Track, textTrack, timeOffset, contiguous, accurateTimeOffset);
}
};
TSDemuxer.prototype.destroy = function destroy() {
this._initPTS = this._initDTS = undefined;
this._duration = 0;
};
TSDemuxer.prototype._parsePAT = function _parsePAT(data, offset) {
// skip the PSI header and parse the first PMT entry
return (data[offset + 10] & 0x1F) << 8 | data[offset + 11];
// logger.log('PMT PID:' + this._pmtId);
};
TSDemuxer.prototype._parsePMT = function _parsePMT(data, offset, mpegSupported, isSampleAes) {
var sectionLength = void 0,
tableEnd = void 0,
programInfoLength = void 0,
pid = void 0,
result = { audio: -1, avc: -1, id3: -1, isAAC: true };
sectionLength = (data[offset + 1] & 0x0f) << 8 | data[offset + 2];
tableEnd = offset + 3 + sectionLength - 4;
// to determine where the table is, we have to figure out how
// long the program info descriptors are
programInfoLength = (data[offset + 10] & 0x0f) << 8 | data[offset + 11];
// advance the offset to the first entry in the mapping table
offset += 12 + programInfoLength;
while (offset < tableEnd) {
pid = (data[offset + 1] & 0x1F) << 8 | data[offset + 2];
switch (data[offset]) {
case 0xcf:
share/public_html/static/hls.js view on Meta::CPAN
}
break;
// Packetized metadata (ID3)
case 0x15:
// logger.log('ID3 PID:' + pid);
if (result.id3 === -1) {
result.id3 = pid;
}
break;
case 0xdb:
// SAMPLE-AES AVC
if (!isSampleAes) {
logger["b" /* logger */].log('unkown stream type:' + data[offset]);
break;
}
/* falls through */
// ITU-T Rec. H.264 and ISO/IEC 14496-10 (lower bit-rate video)
case 0x1b:
// logger.log('AVC PID:' + pid);
if (result.avc === -1) {
result.avc = pid;
}
break;
// ISO/IEC 11172-3 (MPEG-1 audio)
// or ISO/IEC 13818-3 (MPEG-2 halved sample rate audio)
case 0x03:
case 0x04:
// logger.log('MPEG PID:' + pid);
if (!mpegSupported) {
logger["b" /* logger */].log('MPEG audio found, not supported in this browser for now');
} else if (result.audio === -1) {
result.audio = pid;
result.isAAC = false;
}
break;
case 0x24:
logger["b" /* logger */].warn('HEVC stream type found, not supported for now');
break;
default:
logger["b" /* logger */].log('unkown stream type:' + data[offset]);
break;
}
// move to the next table entry
// skip past the elementary stream descriptors, if present
offset += ((data[offset + 3] & 0x0F) << 8 | data[offset + 4]) + 5;
}
return result;
};
TSDemuxer.prototype._parsePES = function _parsePES(stream) {
var i = 0,
frag = void 0,
pesFlags = void 0,
pesPrefix = void 0,
pesLen = void 0,
pesHdrLen = void 0,
pesData = void 0,
pesPts = void 0,
pesDts = void 0,
payloadStartOffset = void 0,
data = stream.data;
// safety check
if (!stream || stream.size === 0) {
return null;
}
// we might need up to 19 bytes to read PES header
// if first chunk of data is less than 19 bytes, let's merge it with following ones until we get 19 bytes
// usually only one merge is needed (and this is rare ...)
while (data[0].length < 19 && data.length > 1) {
var newData = new Uint8Array(data[0].length + data[1].length);
newData.set(data[0]);
newData.set(data[1], data[0].length);
data[0] = newData;
data.splice(1, 1);
}
// retrieve PTS/DTS from first fragment
frag = data[0];
pesPrefix = (frag[0] << 16) + (frag[1] << 8) + frag[2];
if (pesPrefix === 1) {
pesLen = (frag[4] << 8) + frag[5];
// if PES parsed length is not zero and greater than total received length, stop parsing. PES might be truncated
// minus 6 : PES header size
if (pesLen && pesLen > stream.size - 6) {
return null;
}
pesFlags = frag[7];
if (pesFlags & 0xC0) {
/* PES header described here : http://dvd.sourceforge.net/dvdinfo/pes-hdr.html
as PTS / DTS is 33 bit we cannot use bitwise operator in JS,
as Bitwise operators treat their operands as a sequence of 32 bits */
pesPts = (frag[9] & 0x0E) * 536870912 + // 1 << 29
(frag[10] & 0xFF) * 4194304 + // 1 << 22
(frag[11] & 0xFE) * 16384 + // 1 << 14
(frag[12] & 0xFF) * 128 + // 1 << 7
(frag[13] & 0xFE) / 2;
// check if greater than 2^32 -1
if (pesPts > 4294967295) {
// decrement 2^33
pesPts -= 8589934592;
}
if (pesFlags & 0x40) {
pesDts = (frag[14] & 0x0E) * 536870912 + // 1 << 29
(frag[15] & 0xFF) * 4194304 + // 1 << 22
(frag[16] & 0xFE) * 16384 + // 1 << 14
(frag[17] & 0xFF) * 128 + // 1 << 7
(frag[18] & 0xFE) / 2;
// check if greater than 2^32 -1
if (pesDts > 4294967295) {
// decrement 2^33
pesDts -= 8589934592;
}
if (pesPts - pesDts > 60 * 90000) {
logger["b" /* logger */].warn(Math.round((pesPts - pesDts) / 90000) + 's delta between PTS and DTS, align them');
pesPts = pesDts;
}
} else {
pesDts = pesPts;
}
}
pesHdrLen = frag[8];
// 9 bytes : 6 bytes for PES header + 3 bytes for PES extension
payloadStartOffset = pesHdrLen + 9;
stream.size -= payloadStartOffset;
// reassemble PES packet
pesData = new Uint8Array(stream.size);
for (var j = 0, dataLen = data.length; j < dataLen; j++) {
frag = data[j];
var len = frag.byteLength;
if (payloadStartOffset) {
if (payloadStartOffset > len) {
// trim full frag if PES header bigger than frag
payloadStartOffset -= len;
continue;
} else {
// trim partial frag if PES header smaller than frag
frag = frag.subarray(payloadStartOffset);
len -= payloadStartOffset;
payloadStartOffset = 0;
}
}
pesData.set(frag, i);
i += len;
}
if (pesLen) {
// payload size : remove PES header + PES extension
pesLen -= pesHdrLen + 3;
}
return { data: pesData, pts: pesPts, dts: pesDts, len: pesLen };
} else {
return null;
}
};
TSDemuxer.prototype.pushAccesUnit = function pushAccesUnit(avcSample, avcTrack) {
if (avcSample.units.length && avcSample.frame) {
var samples = avcTrack.samples;
var nbSamples = samples.length;
// only push AVC sample if starting with a keyframe is not mandatory OR
// if keyframe already found in this fragment OR
// keyframe found in last fragment (track.sps) AND
// samples already appended (we already found a keyframe in this fragment) OR fragment is contiguous
if (!this.config.forceKeyFrameOnDiscontinuity || avcSample.key === true || avcTrack.sps && (nbSamples || this.contiguous)) {
avcSample.id = nbSamples;
samples.push(avcSample);
} else {
// dropped samples, track it
avcTrack.dropped++;
}
}
if (avcSample.debug.length) {
logger["b" /* logger */].log(avcSample.pts + '/' + avcSample.dts + ':' + avcSample.debug);
}
};
TSDemuxer.prototype._parseAVCPES = function _parseAVCPES(pes, last) {
var _this = this;
// logger.log('parse new PES');
var track = this._avcTrack,
units = this._parseAVCNALu(pes.data),
debug = false,
expGolombDecoder = void 0,
avcSample = this.avcSample,
push = void 0,
spsfound = false,
i = void 0,
pushAccesUnit = this.pushAccesUnit.bind(this),
createAVCSample = function createAVCSample(key, pts, dts, debug) {
return { key: key, pts: pts, dts: dts, units: [], debug: debug };
};
// free pes.data to save up some memory
pes.data = null;
// if new NAL units found and last sample still there, let's push ...
// this helps parsing streams with missing AUD (only do this if AUD never found)
if (avcSample && units.length && !track.audFound) {
pushAccesUnit(avcSample, track);
avcSample = this.avcSample = createAVCSample(false, pes.pts, pes.dts, '');
}
units.forEach(function (unit) {
switch (unit.type) {
// NDR
case 1:
push = true;
if (!avcSample) {
avcSample = _this.avcSample = createAVCSample(true, pes.pts, pes.dts, '');
}
if (debug) {
avcSample.debug += 'NDR ';
}
avcSample.frame = true;
var data = unit.data;
// only check slice type to detect KF in case SPS found in same packet (any keyframe is preceded by SPS ...)
if (spsfound && data.length > 4) {
// retrieve slice type by parsing beginning of NAL unit (follow H264 spec, slice_header definition) to detect keyframe embedded in NDR
var sliceType = new exp_golomb(data).readSliceType();
// 2 : I slice, 4 : SI slice, 7 : I slice, 9: SI slice
// SI slice : A slice that is coded using intra prediction only and using quantisation of the prediction samples.
share/public_html/static/hls.js view on Meta::CPAN
result.set(movie, MP4.FTYP.byteLength);
return result;
};
return MP4;
}();
/* harmony default export */ var mp4_generator = (MP4);
// CONCATENATED MODULE: ./src/remux/mp4-remuxer.js
function mp4_remuxer__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
/**
* fMP4 remuxer
*/
// 10 seconds
var MAX_SILENT_FRAME_DURATION = 10 * 1000;
var mp4_remuxer_MP4Remuxer = function () {
function MP4Remuxer(observer, config, typeSupported, vendor) {
mp4_remuxer__classCallCheck(this, MP4Remuxer);
this.observer = observer;
this.config = config;
this.typeSupported = typeSupported;
var userAgent = navigator.userAgent;
this.isSafari = vendor && vendor.indexOf('Apple') > -1 && userAgent && !userAgent.match('CriOS');
this.ISGenerated = false;
}
MP4Remuxer.prototype.destroy = function destroy() {};
MP4Remuxer.prototype.resetTimeStamp = function resetTimeStamp(defaultTimeStamp) {
this._initPTS = this._initDTS = defaultTimeStamp;
};
MP4Remuxer.prototype.resetInitSegment = function resetInitSegment() {
this.ISGenerated = false;
};
MP4Remuxer.prototype.remux = function remux(audioTrack, videoTrack, id3Track, textTrack, timeOffset, contiguous, accurateTimeOffset) {
// generate Init Segment if needed
if (!this.ISGenerated) {
this.generateIS(audioTrack, videoTrack, timeOffset);
}
if (this.ISGenerated) {
var nbAudioSamples = audioTrack.samples.length;
var nbVideoSamples = videoTrack.samples.length;
var audioTimeOffset = timeOffset;
var videoTimeOffset = timeOffset;
if (nbAudioSamples && nbVideoSamples) {
// timeOffset is expected to be the offset of the first timestamp of this fragment (first DTS)
// if first audio DTS is not aligned with first video DTS then we need to take that into account
// when providing timeOffset to remuxAudio / remuxVideo. if we don't do that, there might be a permanent / small
// drift between audio and video streams
var audiovideoDeltaDts = (audioTrack.samples[0].dts - videoTrack.samples[0].dts) / videoTrack.inputTimeScale;
audioTimeOffset += Math.max(0, audiovideoDeltaDts);
videoTimeOffset += Math.max(0, -audiovideoDeltaDts);
}
// Purposefully remuxing audio before video, so that remuxVideo can use nextAudioPts, which is
// calculated in remuxAudio.
// logger.log('nb AAC samples:' + audioTrack.samples.length);
if (nbAudioSamples) {
// if initSegment was generated without video samples, regenerate it again
if (!audioTrack.timescale) {
logger["b" /* logger */].warn('regenerate InitSegment as audio detected');
this.generateIS(audioTrack, videoTrack, timeOffset);
}
var audioData = this.remuxAudio(audioTrack, audioTimeOffset, contiguous, accurateTimeOffset);
// logger.log('nb AVC samples:' + videoTrack.samples.length);
if (nbVideoSamples) {
var audioTrackLength = void 0;
if (audioData) {
audioTrackLength = audioData.endPTS - audioData.startPTS;
}
// if initSegment was generated without video samples, regenerate it again
if (!videoTrack.timescale) {
logger["b" /* logger */].warn('regenerate InitSegment as video detected');
this.generateIS(audioTrack, videoTrack, timeOffset);
}
this.remuxVideo(videoTrack, videoTimeOffset, contiguous, audioTrackLength, accurateTimeOffset);
}
} else {
// logger.log('nb AVC samples:' + videoTrack.samples.length);
if (nbVideoSamples) {
var videoData = this.remuxVideo(videoTrack, videoTimeOffset, contiguous, 0, accurateTimeOffset);
if (videoData && audioTrack.codec) {
this.remuxEmptyAudio(audioTrack, audioTimeOffset, contiguous, videoData);
}
}
}
}
// logger.log('nb ID3 samples:' + audioTrack.samples.length);
if (id3Track.samples.length) {
this.remuxID3(id3Track, timeOffset);
}
// logger.log('nb ID3 samples:' + audioTrack.samples.length);
if (textTrack.samples.length) {
this.remuxText(textTrack, timeOffset);
}
// notify end of parsing
this.observer.trigger(events["a" /* default */].FRAG_PARSED);
};
MP4Remuxer.prototype.generateIS = function generateIS(audioTrack, videoTrack, timeOffset) {
var observer = this.observer,
audioSamples = audioTrack.samples,
videoSamples = videoTrack.samples,
typeSupported = this.typeSupported,
share/public_html/static/hls.js view on Meta::CPAN
var inputTimeScale = videoTrack.inputTimeScale;
videoTrack.timescale = inputTimeScale;
tracks.video = {
container: 'video/mp4',
codec: videoTrack.codec,
initSegment: mp4_generator.initSegment([videoTrack]),
metadata: {
width: videoTrack.width,
height: videoTrack.height
}
};
if (computePTSDTS) {
initPTS = Math.min(initPTS, videoSamples[0].pts - inputTimeScale * timeOffset);
initDTS = Math.min(initDTS, videoSamples[0].dts - inputTimeScale * timeOffset);
this.observer.trigger(events["a" /* default */].INIT_PTS_FOUND, { initPTS: initPTS });
}
}
if (Object.keys(tracks).length) {
observer.trigger(events["a" /* default */].FRAG_PARSING_INIT_SEGMENT, data);
this.ISGenerated = true;
if (computePTSDTS) {
this._initPTS = initPTS;
this._initDTS = initDTS;
}
} else {
observer.trigger(events["a" /* default */].ERROR, { type: errors["b" /* ErrorTypes */].MEDIA_ERROR, details: errors["a" /* ErrorDetails */].FRAG_PARSING_ERROR, fatal: false, reason: 'no audio/video samples found' });
}
};
MP4Remuxer.prototype.remuxVideo = function remuxVideo(track, timeOffset, contiguous, audioTrackLength, accurateTimeOffset) {
var offset = 8,
timeScale = track.timescale,
mp4SampleDuration = void 0,
mdat = void 0,
moof = void 0,
firstPTS = void 0,
firstDTS = void 0,
nextDTS = void 0,
lastPTS = void 0,
lastDTS = void 0,
inputSamples = track.samples,
outputSamples = [],
nbSamples = inputSamples.length,
ptsNormalize = this._PTSNormalize,
initDTS = this._initDTS;
// for (let i = 0; i < track.samples.length; i++) {
// let avcSample = track.samples[i];
// let units = avcSample.units;
// let unitsString = '';
// for (let j = 0; j < units.length ; j++) {
// unitsString += units[j].type + ',';
// if (units[j].data.length < 500) {
// unitsString += Hex.hexDump(units[j].data);
// }
// }
// logger.log(avcSample.pts + '/' + avcSample.dts + ',' + unitsString + avcSample.units.length);
// }
// if parsed fragment is contiguous with last one, let's use last DTS value as reference
var nextAvcDts = this.nextAvcDts;
var isSafari = this.isSafari;
if (nbSamples === 0) {
return;
}
// Safari does not like overlapping DTS on consecutive fragments. let's use nextAvcDts to overcome this if fragments are consecutive
if (isSafari) {
// also consider consecutive fragments as being contiguous (even if a level switch occurs),
// for sake of clarity:
// consecutive fragments are frags with
// - less than 100ms gaps between new time offset (if accurate) and next expected PTS OR
// - less than 200 ms PTS gaps (timeScale/5)
contiguous |= inputSamples.length && nextAvcDts && (accurateTimeOffset && Math.abs(timeOffset - nextAvcDts / timeScale) < 0.1 || Math.abs(inputSamples[0].pts - nextAvcDts - initDTS) < timeScale / 5);
}
if (!contiguous) {
// if not contiguous, let's use target timeOffset
nextAvcDts = timeOffset * timeScale;
}
// PTS is coded on 33bits, and can loop from -2^32 to 2^32
// ptsNormalize will make PTS/DTS value monotonic, we use last known DTS value as reference value
inputSamples.forEach(function (sample) {
sample.pts = ptsNormalize(sample.pts - initDTS, nextAvcDts);
sample.dts = ptsNormalize(sample.dts - initDTS, nextAvcDts);
});
// sort video samples by DTS then PTS then demux id order
inputSamples.sort(function (a, b) {
var deltadts = a.dts - b.dts;
var deltapts = a.pts - b.pts;
return deltadts || deltapts || a.id - b.id;
});
// handle broken streams with PTS < DTS, tolerance up 200ms (18000 in 90kHz timescale)
var PTSDTSshift = inputSamples.reduce(function (prev, curr) {
return Math.max(Math.min(prev, curr.pts - curr.dts), -18000);
}, 0);
if (PTSDTSshift < 0) {
logger["b" /* logger */].warn('PTS < DTS detected in video samples, shifting DTS by ' + Math.round(PTSDTSshift / 90) + ' ms to overcome this issue');
for (var i = 0; i < inputSamples.length; i++) {
inputSamples[i].dts += PTSDTSshift;
}
}
// compute first DTS and last DTS, normalize them against reference value
var sample = inputSamples[0];
firstDTS = Math.max(sample.dts, 0);
firstPTS = Math.max(sample.pts, 0);
// check timestamp continuity accross consecutive fragments (this is to remove inter-fragment gap/hole)
var delta = Math.round((firstDTS - nextAvcDts) / 90);
// if fragment are contiguous, detect hole/overlapping between fragments
if (contiguous) {
if (delta) {
if (delta > 1) {
logger["b" /* logger */].log('AVC:' + delta + ' ms hole between fragments detected,filling it');
} else if (delta < -1) {
logger["b" /* logger */].log('AVC:' + -delta + ' ms overlapping between fragments detected');
}
// remove hole/gap : set DTS to next expected DTS
firstDTS = nextAvcDts;
inputSamples[0].dts = firstDTS;
// offset PTS as well, ensure that PTS is smaller or equal than new DTS
firstPTS = Math.max(firstPTS - delta, nextAvcDts);
inputSamples[0].pts = firstPTS;
logger["b" /* logger */].log('Video/PTS/DTS adjusted: ' + Math.round(firstPTS / 90) + '/' + Math.round(firstDTS / 90) + ',delta:' + delta + ' ms');
}
}
nextDTS = firstDTS;
// compute lastPTS/lastDTS
sample = inputSamples[inputSamples.length - 1];
lastDTS = Math.max(sample.dts, 0);
lastPTS = Math.max(sample.pts, 0, lastDTS);
// on Safari let's signal the same sample duration for all samples
// sample duration (as expected by trun MP4 boxes), should be the delta between sample DTS
// set this constant duration as being the avg delta between consecutive DTS.
if (isSafari) {
mp4SampleDuration = Math.round((lastDTS - firstDTS) / (inputSamples.length - 1));
}
var nbNalu = 0,
naluLen = 0;
for (var _i = 0; _i < nbSamples; _i++) {
// compute total/avc sample length and nb of NAL units
var _sample = inputSamples[_i],
units = _sample.units,
nbUnits = units.length,
sampleLen = 0;
for (var j = 0; j < nbUnits; j++) {
sampleLen += units[j].data.length;
}
naluLen += sampleLen;
nbNalu += nbUnits;
_sample.length = sampleLen;
// normalize PTS/DTS
if (isSafari) {
// sample DTS is computed using a constant decoding offset (mp4SampleDuration) between samples
_sample.dts = firstDTS + _i * mp4SampleDuration;
} else {
// ensure sample monotonic DTS
_sample.dts = Math.max(_sample.dts, firstDTS);
}
// ensure that computed value is greater or equal than sample DTS
_sample.pts = Math.max(_sample.pts, _sample.dts);
}
/* concatenate the video data and construct the mdat in place
(need 8 more bytes to fill length and mpdat type) */
var mdatSize = naluLen + 4 * nbNalu + 8;
try {
mdat = new Uint8Array(mdatSize);
} catch (err) {
this.observer.trigger(events["a" /* default */].ERROR, { type: errors["b" /* ErrorTypes */].MUX_ERROR, details: errors["a" /* ErrorDetails */].REMUX_ALLOC_ERROR, fatal: false, bytes: mdatSize, reason: 'fail allocating video mdat ' + mdatSize })...
share/public_html/static/hls.js view on Meta::CPAN
dependsOn: avcSample.key ? 2 : 1,
isNonSync: avcSample.key ? 0 : 1
}
});
}
// next AVC sample DTS should be equal to last sample DTS + last sample duration (in PES timescale)
this.nextAvcDts = lastDTS + mp4SampleDuration;
var dropped = track.dropped;
track.len = 0;
track.nbNalu = 0;
track.dropped = 0;
if (outputSamples.length && navigator.userAgent.toLowerCase().indexOf('chrome') > -1) {
var flags = outputSamples[0].flags;
// chrome workaround, mark first sample as being a Random Access Point to avoid sourcebuffer append issue
// https://code.google.com/p/chromium/issues/detail?id=229412
flags.dependsOn = 2;
flags.isNonSync = 0;
}
track.samples = outputSamples;
moof = mp4_generator.moof(track.sequenceNumber++, firstDTS, track);
track.samples = [];
var data = {
data1: moof,
data2: mdat,
startPTS: firstPTS / timeScale,
endPTS: (lastPTS + mp4SampleDuration) / timeScale,
startDTS: firstDTS / timeScale,
endDTS: this.nextAvcDts / timeScale,
type: 'video',
hasAudio: false,
hasVideo: true,
nb: outputSamples.length,
dropped: dropped
};
this.observer.trigger(events["a" /* default */].FRAG_PARSING_DATA, data);
return data;
};
MP4Remuxer.prototype.remuxAudio = function remuxAudio(track, timeOffset, contiguous, accurateTimeOffset) {
var inputTimeScale = track.inputTimeScale,
mp4timeScale = track.timescale,
scaleFactor = inputTimeScale / mp4timeScale,
mp4SampleDuration = track.isAAC ? 1024 : 1152,
inputSampleDuration = mp4SampleDuration * scaleFactor,
ptsNormalize = this._PTSNormalize,
initDTS = this._initDTS,
rawMPEG = !track.isAAC && this.typeSupported.mpeg;
var offset = void 0,
mp4Sample = void 0,
fillFrame = void 0,
mdat = void 0,
moof = void 0,
firstPTS = void 0,
lastPTS = void 0,
inputSamples = track.samples,
outputSamples = [],
nextAudioPts = this.nextAudioPts;
// for audio samples, also consider consecutive fragments as being contiguous (even if a level switch occurs),
// for sake of clarity:
// consecutive fragments are frags with
// - less than 100ms gaps between new time offset (if accurate) and next expected PTS OR
// - less than 20 audio frames distance
// contiguous fragments are consecutive fragments from same quality level (same level, new SN = old SN + 1)
// this helps ensuring audio continuity
// and this also avoids audio glitches/cut when switching quality, or reporting wrong duration on first audio frame
contiguous |= inputSamples.length && nextAudioPts && (accurateTimeOffset && Math.abs(timeOffset - nextAudioPts / inputTimeScale) < 0.1 || Math.abs(inputSamples[0].pts - nextAudioPts - initDTS) < 20 * inputSampleDuration);
// compute normalized PTS
inputSamples.forEach(function (sample) {
sample.pts = sample.dts = ptsNormalize(sample.pts - initDTS, timeOffset * inputTimeScale);
});
// filter out sample with negative PTS that are not playable anyway
// if we don't remove these negative samples, they will shift all audio samples forward.
// leading to audio overlap between current / next fragment
inputSamples = inputSamples.filter(function (sample) {
return sample.pts >= 0;
});
// in case all samples have negative PTS, and have been filtered out, return now
if (inputSamples.length === 0) {
return;
}
if (!contiguous) {
if (!accurateTimeOffset) {
// if frag are mot contiguous and if we cant trust time offset, let's use first sample PTS as next audio PTS
nextAudioPts = inputSamples[0].pts;
} else {
// if timeOffset is accurate, let's use it as predicted next audio PTS
nextAudioPts = timeOffset * inputTimeScale;
}
}
// If the audio track is missing samples, the frames seem to get "left-shifted" within the
// resulting mp4 segment, causing sync issues and leaving gaps at the end of the audio segment.
// In an effort to prevent this from happening, we inject frames here where there are gaps.
// When possible, we inject a silent frame; when that's not possible, we duplicate the last
// frame.
if (track.isAAC) {
var maxAudioFramesDrift = this.config.maxAudioFramesDrift;
for (var i = 0, nextPts = nextAudioPts; i < inputSamples.length;) {
// First, let's see how far off this frame is from where we expect it to be
var sample = inputSamples[i],
delta;
var pts = sample.pts;
delta = pts - nextPts;
var duration = Math.abs(1000 * delta / inputTimeScale);
// If we're overlapping by more than a duration, drop this sample
if (delta <= -maxAudioFramesDrift * inputSampleDuration) {
logger["b" /* logger */].warn('Dropping 1 audio frame @ ' + (nextPts / inputTimeScale).toFixed(3) + 's due to ' + Math.round(duration) + ' ms overlap.');
inputSamples.splice(i, 1);
track.len -= sample.unit.length;
// Don't touch nextPtsNorm or i
} // eslint-disable-line brace-style
// Insert missing frames if:
// 1: We're more than maxAudioFramesDrift frame away
// 2: Not more than MAX_SILENT_FRAME_DURATION away
// 3: currentTime (aka nextPtsNorm) is not 0
else if (delta >= maxAudioFramesDrift * inputSampleDuration && duration < MAX_SILENT_FRAME_DURATION && nextPts) {
var missing = Math.round(delta / inputSampleDuration);
logger["b" /* logger */].warn('Injecting ' + missing + ' audio frame @ ' + (nextPts / inputTimeScale).toFixed(3) + 's due to ' + Math.round(1000 * delta / inputTimeScale) + ' ms gap.');
for (var j = 0; j < missing; j++) {
var newStamp = Math.max(nextPts, 0);
fillFrame = aac_helper.getSilentFrame(track.manifestCodec || track.codec, track.channelCount);
if (!fillFrame) {
logger["b" /* logger */].log('Unable to get silent frame for given audio codec; duplicating last frame instead.');
fillFrame = sample.unit.subarray();
}
inputSamples.splice(i, 0, { unit: fillFrame, pts: newStamp, dts: newStamp });
track.len += fillFrame.length;
nextPts += inputSampleDuration;
i++;
}
// Adjust sample to next expected pts
sample.pts = sample.dts = nextPts;
nextPts += inputSampleDuration;
i++;
} else {
// Otherwise, just adjust pts
if (Math.abs(delta) > 0.1 * inputSampleDuration) {
// logger.log(`Invalid frame delta ${Math.round(delta + inputSampleDuration)} at PTS ${Math.round(pts / 90)} (should be ${Math.round(inputSampleDuration)}).`);
}
sample.pts = sample.dts = nextPts;
nextPts += inputSampleDuration;
i++;
}
}
}
for (var _j2 = 0, _nbSamples = inputSamples.length; _j2 < _nbSamples; _j2++) {
var audioSample = inputSamples[_j2];
var unit = audioSample.unit;
var _pts = audioSample.pts;
// logger.log(`Audio/PTS:${Math.round(pts/90)}`);
// if not first sample
if (lastPTS !== undefined) {
mp4Sample.duration = Math.round((_pts - lastPTS) / scaleFactor);
} else {
var _delta = Math.round(1000 * (_pts - nextAudioPts) / inputTimeScale),
numMissingFrames = 0;
// if fragment are contiguous, detect hole/overlapping between fragments
// contiguous fragments are consecutive fragments from same quality level (same level, new SN = old SN + 1)
if (contiguous && track.isAAC) {
// log delta
if (_delta) {
if (_delta > 0 && _delta < MAX_SILENT_FRAME_DURATION) {
numMissingFrames = Math.round((_pts - nextAudioPts) / inputSampleDuration);
logger["b" /* logger */].log(_delta + ' ms hole between AAC samples detected,filling it');
if (numMissingFrames > 0) {
fillFrame = aac_helper.getSilentFrame(track.manifestCodec || track.codec, track.channelCount);
if (!fillFrame) {
fillFrame = unit.subarray();
}
track.len += numMissingFrames * fillFrame.length;
}
// if we have frame overlap, overlapping for more than half a frame duraion
} else if (_delta < -12) {
// drop overlapping audio frames... browser will deal with it
logger["b" /* logger */].log('drop overlapping AAC sample, expected/parsed/delta:' + (nextAudioPts / inputTimeScale).toFixed(3) + 's/' + (_pts / inputTimeScale).toFixed(3) + 's/' + -_delta + 'ms');
track.len -= unit.byteLength;
continue;
}
// set PTS/DTS to expected PTS/DTS
_pts = nextAudioPts;
}
}
// remember first PTS of our audioSamples
firstPTS = _pts;
if (track.len > 0) {
/* concatenate the audio data and construct the mdat in place
(need 8 more bytes to fill length and mdat type) */
var mdatSize = rawMPEG ? track.len : track.len + 8;
offset = rawMPEG ? 0 : 8;
try {
mdat = new Uint8Array(mdatSize);
} catch (err) {
this.observer.trigger(events["a" /* default */].ERROR, { type: errors["b" /* ErrorTypes */].MUX_ERROR, details: errors["a" /* ErrorDetails */].REMUX_ALLOC_ERROR, fatal: false, bytes: mdatSize, reason: 'fail allocating audio mdat ' + mdatS...
return;
}
if (!rawMPEG) {
var view = new DataView(mdat.buffer);
view.setUint32(0, mdatSize);
mdat.set(mp4_generator.types.mdat, 4);
}
} else {
// no audio samples
return;
}
for (var _i3 = 0; _i3 < numMissingFrames; _i3++) {
fillFrame = aac_helper.getSilentFrame(track.manifestCodec || track.codec, track.channelCount);
if (!fillFrame) {
logger["b" /* logger */].log('Unable to get silent frame for given audio codec; duplicating this frame instead.');
fillFrame = unit.subarray();
}
mdat.set(fillFrame, offset);
offset += fillFrame.byteLength;
mp4Sample = {
size: fillFrame.byteLength,
cts: 0,
duration: 1024,
flags: {
share/public_html/static/hls.js view on Meta::CPAN
return MP4Remuxer;
}();
/* harmony default export */ var mp4_remuxer = (mp4_remuxer_MP4Remuxer);
// CONCATENATED MODULE: ./src/remux/passthrough-remuxer.js
function passthrough_remuxer__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
/**
* passthrough remuxer
*/
var passthrough_remuxer_PassThroughRemuxer = function () {
function PassThroughRemuxer(observer) {
passthrough_remuxer__classCallCheck(this, PassThroughRemuxer);
this.observer = observer;
}
PassThroughRemuxer.prototype.destroy = function destroy() {};
PassThroughRemuxer.prototype.resetTimeStamp = function resetTimeStamp() {};
PassThroughRemuxer.prototype.resetInitSegment = function resetInitSegment() {};
PassThroughRemuxer.prototype.remux = function remux(audioTrack, videoTrack, id3Track, textTrack, timeOffset, contiguous, accurateTimeOffset, rawData) {
var observer = this.observer;
var streamType = '';
if (audioTrack) {
streamType += 'audio';
}
if (videoTrack) {
streamType += 'video';
}
observer.trigger(events["a" /* default */].FRAG_PARSING_DATA, {
data1: rawData,
startPTS: timeOffset,
startDTS: timeOffset,
type: streamType,
hasAudio: !!audioTrack,
hasVideo: !!videoTrack,
nb: 1,
dropped: 0
});
// notify end of parsing
observer.trigger(events["a" /* default */].FRAG_PARSED);
};
return PassThroughRemuxer;
}();
/* harmony default export */ var passthrough_remuxer = (passthrough_remuxer_PassThroughRemuxer);
// CONCATENATED MODULE: ./src/demux/demuxer-inline.js
function demuxer_inline__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
/**
*
* inline demuxer: probe fragments and instantiate
* appropriate demuxer depending on content type (TSDemuxer, AACDemuxer, ...)
*
*/
// see https://stackoverflow.com/a/11237259/589493
var global = Object(get_self_scope["a" /* getSelfScope */])(); // safeguard for code that might run both on worker and main thread
var performance = global;
var demuxer_inline_DemuxerInline = function () {
function DemuxerInline(observer, typeSupported, config, vendor) {
demuxer_inline__classCallCheck(this, DemuxerInline);
this.observer = observer;
this.typeSupported = typeSupported;
this.config = config;
this.vendor = vendor;
}
DemuxerInline.prototype.destroy = function destroy() {
var demuxer = this.demuxer;
if (demuxer) {
demuxer.destroy();
}
};
DemuxerInline.prototype.push = function push(data, decryptdata, initSegment, audioCodec, videoCodec, timeOffset, discontinuity, trackSwitch, contiguous, duration, accurateTimeOffset, defaultInitPTS) {
if (data.byteLength > 0 && decryptdata != null && decryptdata.key != null && decryptdata.method === 'AES-128') {
var decrypter = this.decrypter;
if (decrypter == null) {
decrypter = this.decrypter = new crypt_decrypter["a" /* default */](this.observer, this.config);
}
var localthis = this;
// performance.now() not available on WebWorker, at least on Safari Desktop
var startTime = void 0;
try {
startTime = performance.now();
} catch (error) {
startTime = Date.now();
}
decrypter.decrypt(data, decryptdata.key.buffer, decryptdata.iv.buffer, function (decryptedData) {
var endTime = void 0;
try {
endTime = performance.now();
} catch (error) {
endTime = Date.now();
}
localthis.observer.trigger(events["a" /* default */].FRAG_DECRYPTED, { stats: { tstart: startTime, tdecrypt: endTime } });
share/public_html/static/hls.js view on Meta::CPAN
EventHandler.prototype.onEvent = function onEvent(event, data) {
this.onEventGeneric(event, data);
};
EventHandler.prototype.onEventGeneric = function onEventGeneric(event, data) {
var eventToFunction = function eventToFunction(event, data) {
var funcName = 'on' + event.replace('hls', '');
if (typeof this[funcName] !== 'function') {
throw new Error('Event ' + event + ' has no generic handler in this ' + this.constructor.name + ' class (tried ' + funcName + ')');
}
return this[funcName].bind(this, data);
};
try {
eventToFunction.call(this, event, data).call();
} catch (err) {
logger["b" /* logger */].error('An internal error happened while handling event ' + event + '. Error message: "' + err.message + '". Here is a stacktrace:', err);
this.hls.trigger(events["a" /* default */].ERROR, { type: errors["b" /* ErrorTypes */].OTHER_ERROR, details: errors["a" /* ErrorDetails */].INTERNAL_EXCEPTION, fatal: false, event: event, err: err });
}
};
return EventHandler;
}();
/* harmony default export */ var event_handler = (event_handler_EventHandler);
// EXTERNAL MODULE: ./src/demux/mp4demuxer.js
var mp4demuxer = __webpack_require__(8);
// CONCATENATED MODULE: ./src/loader/level-key.js
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 des...
function level_key__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var level_key_LevelKey = function () {
function LevelKey() {
level_key__classCallCheck(this, LevelKey);
this.method = null;
this.key = null;
this.iv = null;
this._uri = null;
}
_createClass(LevelKey, [{
key: 'uri',
get: function get() {
if (!this._uri && this.reluri) {
this._uri = url_toolkit_default.a.buildAbsoluteURL(this.baseuri, this.reluri, { alwaysNormalize: true });
}
return this._uri;
}
}]);
return LevelKey;
}();
/* harmony default export */ var level_key = (level_key_LevelKey);
// CONCATENATED MODULE: ./src/loader/fragment.js
var fragment__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 ("valu...
function fragment__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var fragment_Fragment = function () {
function Fragment() {
var _elementaryStreams;
fragment__classCallCheck(this, Fragment);
this._url = null;
this._byteRange = null;
this._decryptdata = null;
this.tagList = [];
// Holds the types of data this fragment supports
this._elementaryStreams = (_elementaryStreams = {}, _elementaryStreams[Fragment.ElementaryStreamTypes.AUDIO] = false, _elementaryStreams[Fragment.ElementaryStreamTypes.VIDEO] = false, _elementaryStreams);
}
/**
* `type` property for this._elementaryStreams
*
* @enum
*/
/**
* @param {ElementaryStreamType} type
*/
Fragment.prototype.addElementaryStream = function addElementaryStream(type) {
this._elementaryStreams[type] = true;
};
/**
* @param {ElementaryStreamType} type
*/
Fragment.prototype.hasElementaryStream = function hasElementaryStream(type) {
return this._elementaryStreams[type] === true;
};
/**
* Utility method for parseLevelPlaylist to create an initialization vector for a given segment
* @returns {Uint8Array}
*/
Fragment.prototype.createInitializationVector = function createInitializationVector(segmentNumber) {
var uint8View = new Uint8Array(16);
for (var i = 12; i < 16; i++) {
uint8View[i] = segmentNumber >> 8 * (15 - i) & 0xff;
}
return uint8View;
};
/**
* Utility method for parseLevelPlaylist to get a fragment's decryption data from the currently parsed encryption key data
* @param levelkey - a playlist's encryption info
* @param segmentNumber - the fragment's segment number
* @returns {*} - an object to be applied as a fragment's decryptdata
*/
Fragment.prototype.fragmentDecryptdataFromLevelkey = function fragmentDecryptdataFromLevelkey(levelkey, segmentNumber) {
var decryptdata = levelkey;
if (levelkey && levelkey.method && levelkey.uri && !levelkey.iv) {
decryptdata = new level_key();
decryptdata.method = levelkey.method;
decryptdata.baseuri = levelkey.baseuri;
decryptdata.reluri = levelkey.reluri;
decryptdata.iv = this.createInitializationVector(segmentNumber);
}
return decryptdata;
};
fragment__createClass(Fragment, [{
key: 'url',
get: function get() {
if (!this._url && this.relurl) {
this._url = url_toolkit_default.a.buildAbsoluteURL(this.baseurl, this.relurl, { alwaysNormalize: true });
}
return this._url;
},
set: function set(value) {
this._url = value;
}
}, {
key: 'programDateTime',
get: function get() {
if (!this._programDateTime && this.rawProgramDateTime) {
this._programDateTime = new Date(Date.parse(this.rawProgramDateTime));
}
return this._programDateTime;
}
}, {
key: 'byteRange',
get: function get() {
if (!this._byteRange && !this.rawByteRange) {
return [];
}
if (this._byteRange) {
return this._byteRange;
}
var byteRange = [];
if (this.rawByteRange) {
var params = this.rawByteRange.split('@', 2);
if (params.length === 1) {
var lastByteRangeEndOffset = this.lastByteRangeEndOffset;
byteRange[0] = lastByteRangeEndOffset || 0;
} else {
byteRange[0] = parseInt(params[1]);
}
byteRange[1] = parseInt(params[0]) + byteRange[0];
this._byteRange = byteRange;
}
return byteRange;
}
/**
* @type {number}
*/
}, {
key: 'byteRangeStartOffset',
get: function get() {
return this.byteRange[0];
}
}, {
key: 'byteRangeEndOffset',
get: function get() {
return this.byteRange[1];
}
}, {
key: 'decryptdata',
get: function get() {
if (!this._decryptdata) {
this._decryptdata = this.fragmentDecryptdataFromLevelkey(this.levelkey, this.sn);
}
return this._decryptdata;
}
}, {
key: 'encrypted',
get: function get() {
return !!(this.decryptdata && this.decryptdata.uri !== null && this.decryptdata.key === null);
}
}], [{
key: 'ElementaryStreamTypes',
get: function get() {
return {
AUDIO: 'audio',
VIDEO: 'video'
};
}
}]);
return Fragment;
}();
/* harmony default export */ var loader_fragment = (fragment_Fragment);
// CONCATENATED MODULE: ./src/utils/attr-list.js
function attr_list__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var DECIMAL_RESOLUTION_REGEX = /^(\d+)x(\d+)$/; // eslint-disable-line no-useless-escape
var ATTR_LIST_REGEX = /\s*(.+?)\s*=((?:\".*?\")|.*?)(?:,|$)/g; // eslint-disable-line no-useless-escape
// adapted from https://github.com/kanongil/node-m3u8parse/blob/master/attrlist.js
var AttrList = function () {
function AttrList(attrs) {
attr_list__classCallCheck(this, AttrList);
if (typeof attrs === 'string') {
attrs = AttrList.parseAttrList(attrs);
}
for (var attr in attrs) {
if (attrs.hasOwnProperty(attr)) {
this[attr] = attrs[attr];
}
}
}
AttrList.prototype.decimalInteger = function decimalInteger(attrName) {
var intValue = parseInt(this[attrName], 10);
if (intValue > Number.MAX_SAFE_INTEGER) {
return Infinity;
}
return intValue;
};
AttrList.prototype.hexadecimalInteger = function hexadecimalInteger(attrName) {
if (this[attrName]) {
var stringValue = (this[attrName] || '0x').slice(2);
stringValue = (stringValue.length & 1 ? '0' : '') + stringValue;
var value = new Uint8Array(stringValue.length / 2);
for (var i = 0; i < stringValue.length / 2; i++) {
value[i] = parseInt(stringValue.slice(i * 2, i * 2 + 2), 16);
}
return value;
} else {
return null;
}
};
AttrList.prototype.hexadecimalIntegerAsNumber = function hexadecimalIntegerAsNumber(attrName) {
var intValue = parseInt(this[attrName], 16);
if (intValue > Number.MAX_SAFE_INTEGER) {
return Infinity;
}
return intValue;
};
AttrList.prototype.decimalFloatingPoint = function decimalFloatingPoint(attrName) {
return parseFloat(this[attrName]);
};
share/public_html/static/hls.js view on Meta::CPAN
var resolution = attrs.decimalResolution('RESOLUTION');
if (resolution) {
level.width = resolution.width;
level.height = resolution.height;
}
level.bitrate = attrs.decimalInteger('AVERAGE-BANDWIDTH') || attrs.decimalInteger('BANDWIDTH');
level.name = attrs.NAME;
setCodecs([].concat((attrs.CODECS || '').split(/[ ,]+/)), level);
if (level.videoCodec && level.videoCodec.indexOf('avc1') !== -1) {
level.videoCodec = M3U8Parser.convertAVC1ToAVCOTI(level.videoCodec);
}
levels.push(level);
}
return levels;
};
M3U8Parser.parseMasterPlaylistMedia = function parseMasterPlaylistMedia(string, baseurl, type) {
var audioGroups = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : [];
var result = void 0;
var medias = [];
var id = 0;
MASTER_PLAYLIST_MEDIA_REGEX.lastIndex = 0;
while ((result = MASTER_PLAYLIST_MEDIA_REGEX.exec(string)) !== null) {
var media = {};
var attrs = new attr_list(result[1]);
if (attrs.TYPE === type) {
media.groupId = attrs['GROUP-ID'];
media.name = attrs.NAME;
media.type = type;
media.default = attrs.DEFAULT === 'YES';
media.autoselect = attrs.AUTOSELECT === 'YES';
media.forced = attrs.FORCED === 'YES';
if (attrs.URI) {
media.url = M3U8Parser.resolve(attrs.URI, baseurl);
}
media.lang = attrs.LANGUAGE;
if (!media.name) {
media.name = media.lang;
}
if (audioGroups.length) {
var groupCodec = M3U8Parser.findGroup(audioGroups, media.groupId);
media.audioCodec = groupCodec ? groupCodec.codec : audioGroups[0].codec;
}
media.id = id++;
medias.push(media);
}
}
return medias;
};
M3U8Parser.parseLevelPlaylist = function parseLevelPlaylist(string, baseurl, id, type, levelUrlId) {
var currentSN = 0,
totalduration = 0,
level = { type: null, version: null, url: baseurl, fragments: [], live: true, startSN: 0 },
levelkey = new level_key(),
cc = 0,
prevFrag = null,
frag = new loader_fragment(),
result = void 0,
i = void 0;
LEVEL_PLAYLIST_REGEX_FAST.lastIndex = 0;
while ((result = LEVEL_PLAYLIST_REGEX_FAST.exec(string)) !== null) {
var duration = result[1];
if (duration) {
// INF
frag.duration = parseFloat(duration);
// avoid sliced strings https://github.com/video-dev/hls.js/issues/939
var title = (' ' + result[2]).slice(1);
frag.title = title || null;
frag.tagList.push(title ? ['INF', duration, title] : ['INF', duration]);
} else if (result[3]) {
// url
if (!isNaN(frag.duration)) {
var sn = currentSN++;
frag.type = type;
frag.start = totalduration;
frag.levelkey = levelkey;
frag.sn = sn;
frag.level = id;
frag.cc = cc;
frag.urlId = levelUrlId;
frag.baseurl = baseurl;
// avoid sliced strings https://github.com/video-dev/hls.js/issues/939
frag.relurl = (' ' + result[3]).slice(1);
if (level.programDateTime) {
if (prevFrag) {
if (frag.rawProgramDateTime) {
// PDT discontinuity found
frag.pdt = Date.parse(frag.rawProgramDateTime);
} else {
// Contiguous fragment
frag.pdt = prevFrag.pdt + prevFrag.duration * 1000;
}
} else {
// First fragment
frag.pdt = Date.parse(level.programDateTime);
}
frag.endPdt = frag.pdt + frag.duration * 1000;
}
level.fragments.push(frag);
prevFrag = frag;
totalduration += frag.duration;
frag = new loader_fragment();
}
} else if (result[4]) {
// X-BYTERANGE
frag.rawByteRange = (' ' + result[4]).slice(1);
if (prevFrag) {
var lastByteRangeEndOffset = prevFrag.byteRangeEndOffset;
if (lastByteRangeEndOffset) {
frag.lastByteRangeEndOffset = lastByteRangeEndOffset;
}
}
} else if (result[5]) {
// PROGRAM-DATE-TIME
// avoid sliced strings https://github.com/video-dev/hls.js/issues/939
frag.rawProgramDateTime = (' ' + result[5]).slice(1);
frag.tagList.push(['PROGRAM-DATE-TIME', frag.rawProgramDateTime]);
if (level.programDateTime === undefined) {
level.programDateTime = new Date(new Date(Date.parse(result[5])) - 1000 * totalduration);
}
} else {
result = result[0].match(LEVEL_PLAYLIST_REGEX_SLOW);
for (i = 1; i < result.length; i++) {
if (result[i] !== undefined) {
break;
}
}
// avoid sliced strings https://github.com/video-dev/hls.js/issues/939
var value1 = (' ' + result[i + 1]).slice(1);
var value2 = (' ' + result[i + 2]).slice(1);
switch (result[i]) {
case '#':
frag.tagList.push(value2 ? [value1, value2] : [value1]);
break;
case 'PLAYLIST-TYPE':
level.type = value1.toUpperCase();
break;
case 'MEDIA-SEQUENCE':
currentSN = level.startSN = parseInt(value1);
break;
case 'TARGETDURATION':
level.targetduration = parseFloat(value1);
break;
case 'VERSION':
level.version = parseInt(value1);
break;
case 'EXTM3U':
break;
case 'ENDLIST':
level.live = false;
break;
case 'DIS':
cc++;
frag.tagList.push(['DIS']);
break;
case 'DISCONTINUITY-SEQ':
cc = parseInt(value1);
break;
case 'KEY':
// https://tools.ietf.org/html/draft-pantos-http-live-streaming-08#section-3.4.4
var decryptparams = value1;
var keyAttrs = new attr_list(decryptparams);
var decryptmethod = keyAttrs.enumeratedString('METHOD'),
decrypturi = keyAttrs.URI,
decryptiv = keyAttrs.hexadecimalInteger('IV');
if (decryptmethod) {
levelkey = new level_key();
if (decrypturi && ['AES-128', 'SAMPLE-AES', 'SAMPLE-AES-CENC'].indexOf(decryptmethod) >= 0) {
levelkey.method = decryptmethod;
// URI to get the key
levelkey.baseuri = baseurl;
levelkey.reluri = decrypturi;
levelkey.key = null;
// Initialization Vector (IV)
levelkey.iv = decryptiv;
}
}
break;
case 'START':
var startParams = value1;
var startAttrs = new attr_list(startParams);
var startTimeOffset = startAttrs.decimalFloatingPoint('TIME-OFFSET');
// TIME-OFFSET can be 0
if (!isNaN(startTimeOffset)) {
level.startTimeOffset = startTimeOffset;
}
break;
case 'MAP':
var mapAttrs = new attr_list(value1);
frag.relurl = mapAttrs.URI;
frag.rawByteRange = mapAttrs.BYTERANGE;
frag.baseurl = baseurl;
frag.level = id;
frag.type = type;
frag.sn = 'initSegment';
level.initSegment = frag;
frag = new loader_fragment();
break;
default:
logger["b" /* logger */].warn('line parsed but not handled: ' + result);
break;
}
}
}
frag = prevFrag;
// logger.log('found ' + level.fragments.length + ' fragments');
if (frag && !frag.relurl) {
level.fragments.pop();
totalduration -= frag.duration;
}
level.totalduration = totalduration;
level.averagetargetduration = totalduration / level.fragments.length;
level.endSN = currentSN - 1;
level.startCC = level.fragments[0] ? level.fragments[0].cc : 0;
level.endCC = cc;
if (!level.initSegment && level.fragments.length) {
// this is a bit lurky but HLS really has no other way to tell us
// if the fragments are TS or MP4, except if we download them :/
// but this is to be able to handle SIDX.
if (level.fragments.every(function (frag) {
return MP4_REGEX_SUFFIX.test(frag.relurl);
})) {
logger["b" /* logger */].warn('MP4 fragments found but no init segment (probably no MAP, incomplete M3U8), trying to fetch SIDX');
frag = new loader_fragment();
frag.relurl = level.fragments[0].relurl;
frag.baseurl = baseurl;
frag.level = id;
frag.type = type;
frag.sn = 'initSegment';
level.initSegment = frag;
level.needSidxRanges = true;
}
}
return level;
};
return M3U8Parser;
}();
/* harmony default export */ var m3u8_parser = (m3u8_parser_M3U8Parser);
// CONCATENATED MODULE: ./src/loader/playlist-loader.js
var playlist_loader__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...
function playlist_loader__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
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(superC...
/**
* PlaylistLoader - delegate for media manifest/playlist loading tasks. Takes care of parsing media to internal data-models.
*
* Once loaded, dispatches events with parsed data-models of manifest/levels/audio/subtitle tracks.
*
* Uses loader(s) set in config to do actual internal loading of resource tasks.
*
* @module
*
*/
var _window = window,
performance = _window.performance;
/**
* `type` property values for this loaders' context object
* @enum
*
*/
var ContextType = {
MANIFEST: 'manifest',
LEVEL: 'level',
AUDIO_TRACK: 'audioTrack',
SUBTITLE_TRACK: 'subtitleTrack'
};
/**
* @enum {string}
*/
var LevelType = {
share/public_html/static/hls.js view on Meta::CPAN
var levelUrlId = isNaN(id) ? 0 : id;
var levelId = isNaN(level) ? levelUrlId : level; // level -> id -> 0
var levelType = PlaylistLoader.mapContextToLevelType(context);
var levelDetails = m3u8_parser.parseLevelPlaylist(response.data, url, levelId, levelType, levelUrlId);
// set stats on level structure
levelDetails.tload = stats.tload;
// We have done our first request (Manifest-type) and receive
// not a master playlist but a chunk-list (track/level)
// We fire the manifest-loaded event anyway with the parsed level-details
// by creating a single-level structure for it.
if (type === ContextType.MANIFEST) {
var singleLevel = {
url: url,
details: levelDetails
};
hls.trigger(events["a" /* default */].MANIFEST_LOADED, {
levels: [singleLevel],
audioTracks: [],
url: url,
stats: stats,
networkDetails: networkDetails
});
}
// save parsing time
stats.tparsed = performance.now();
// in case we need SIDX ranges
// return early after calling load for
// the SIDX box.
if (levelDetails.needSidxRanges) {
var sidxUrl = levelDetails.initSegment.url;
this.load(sidxUrl, {
isSidxRequest: true,
type: type,
level: level,
levelDetails: levelDetails,
id: id,
rangeStart: 0,
rangeEnd: 2048,
responseType: 'arraybuffer'
});
return;
}
// extend the context with the new levelDetails property
context.levelDetails = levelDetails;
this._handlePlaylistLoaded(response, stats, context, networkDetails);
};
PlaylistLoader.prototype._handleSidxRequest = function _handleSidxRequest(response, context) {
var sidxInfo = mp4demuxer["a" /* default */].parseSegmentIndex(new Uint8Array(response.data));
sidxInfo.references.forEach(function (segmentRef, index) {
var segRefInfo = segmentRef.info;
var frag = context.levelDetails.fragments[index];
if (frag.byteRange.length === 0) {
frag.rawByteRange = String(1 + segRefInfo.end - segRefInfo.start) + '@' + String(segRefInfo.start);
}
});
context.levelDetails.initSegment.rawByteRange = String(sidxInfo.moovEndOffset) + '@0';
};
PlaylistLoader.prototype._handleManifestParsingError = function _handleManifestParsingError(response, context, reason, networkDetails) {
this.hls.trigger(events["a" /* default */].ERROR, {
type: errors["b" /* ErrorTypes */].NETWORK_ERROR,
details: errors["a" /* ErrorDetails */].MANIFEST_PARSING_ERROR,
fatal: true,
url: response.url,
reason: reason,
networkDetails: networkDetails
});
};
PlaylistLoader.prototype._handleNetworkError = function _handleNetworkError(context, networkDetails) {
var timeout = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;
logger["b" /* logger */].info('A network error occured while loading a ' + context.type + '-type playlist');
var details = void 0;
var fatal = void 0;
var loader = this.getInternalLoader(context);
switch (context.type) {
case ContextType.MANIFEST:
details = timeout ? errors["a" /* ErrorDetails */].MANIFEST_LOAD_TIMEOUT : errors["a" /* ErrorDetails */].MANIFEST_LOAD_ERROR;
fatal = true;
break;
case ContextType.LEVEL:
details = timeout ? errors["a" /* ErrorDetails */].LEVEL_LOAD_TIMEOUT : errors["a" /* ErrorDetails */].LEVEL_LOAD_ERROR;
fatal = false;
break;
case ContextType.AUDIO_TRACK:
details = timeout ? errors["a" /* ErrorDetails */].AUDIO_TRACK_LOAD_TIMEOUT : errors["a" /* ErrorDetails */].AUDIO_TRACK_LOAD_ERROR;
fatal = false;
break;
default:
// details = ...?
fatal = false;
}
if (loader) {
loader.abort();
this.resetInternalLoader(context.type);
}
this.hls.trigger(events["a" /* default */].ERROR, {
type: errors["b" /* ErrorTypes */].NETWORK_ERROR,
details: details,
fatal: fatal,
url: loader.url,
loader: loader,
context: context,
networkDetails: networkDetails
});
};
PlaylistLoader.prototype._handlePlaylistLoaded = function _handlePlaylistLoaded(response, stats, context, networkDetails) {
var type = context.type,
level = context.level,
id = context.id,
levelDetails = context.levelDetails;
if (!levelDetails.targetduration) {
this._handleManifestParsingError(response, context, 'invalid target duration', networkDetails);
return;
}
var canHaveLevels = PlaylistLoader.canHaveQualityLevels(context.type);
if (canHaveLevels) {
this.hls.trigger(events["a" /* default */].LEVEL_LOADED, {
details: levelDetails,
level: level || 0,
id: id || 0,
stats: stats,
networkDetails: networkDetails
});
} else {
switch (type) {
case ContextType.AUDIO_TRACK:
this.hls.trigger(events["a" /* default */].AUDIO_TRACK_LOADED, {
details: levelDetails,
id: id,
stats: stats,
networkDetails: networkDetails
});
break;
case ContextType.SUBTITLE_TRACK:
this.hls.trigger(events["a" /* default */].SUBTITLE_TRACK_LOADED, {
details: levelDetails,
id: id,
stats: stats,
networkDetails: networkDetails
});
break;
}
}
};
playlist_loader__createClass(PlaylistLoader, null, [{
key: 'ContextType',
get: function get() {
return ContextType;
}
}, {
key: 'LevelType',
get: function get() {
return LevelType;
}
}]);
return PlaylistLoader;
}(event_handler);
/* harmony default export */ var playlist_loader = (playlist_loader_PlaylistLoader);
// CONCATENATED MODULE: ./src/loader/fragment-loader.js
function fragment_loader__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function fragment_loader__possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : s...
function fragment_loader__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 = Obje...
/*
* Fragment Loader
*/
var fragment_loader_FragmentLoader = function (_EventHandler) {
fragment_loader__inherits(FragmentLoader, _EventHandler);
function FragmentLoader(hls) {
fragment_loader__classCallCheck(this, FragmentLoader);
var _this = fragment_loader__possibleConstructorReturn(this, _EventHandler.call(this, hls, events["a" /* default */].FRAG_LOADING));
_this.loaders = {};
return _this;
}
FragmentLoader.prototype.destroy = function destroy() {
var loaders = this.loaders;
for (var loaderName in loaders) {
var loader = loaders[loaderName];
if (loader) {
loader.destroy();
}
}
this.loaders = {};
_EventHandler.prototype.destroy.call(this);
};
FragmentLoader.prototype.onFragLoading = function onFragLoading(data) {
var frag = data.frag,
type = frag.type,
loaders = this.loaders,
config = this.hls.config,
FragmentILoader = config.fLoader,
DefaultILoader = config.loader;
// reset fragment state
frag.loaded = 0;
var loader = loaders[type];
if (loader) {
logger["b" /* logger */].warn('abort previous fragment loader for type: ' + type);
loader.abort();
}
loader = loaders[type] = frag.loader = config.fLoader ? new FragmentILoader(config) : new DefaultILoader(config);
var loaderContext = void 0,
loaderConfig = void 0,
loaderCallbacks = void 0;
loaderContext = { url: frag.url, frag: frag, responseType: 'arraybuffer', progressData: false };
var start = frag.byteRangeStartOffset,
end = frag.byteRangeEndOffset;
if (!isNaN(start) && !isNaN(end)) {
loaderContext.rangeStart = start;
loaderContext.rangeEnd = end;
}
loaderConfig = {
timeout: config.fragLoadingTimeOut,
maxRetry: 0,
retryDelay: 0,
maxRetryDelay: config.fragLoadingMaxRetryTimeout
};
loaderCallbacks = {
onSuccess: this.loadsuccess.bind(this),
onError: this.loaderror.bind(this),
onTimeout: this.loadtimeout.bind(this),
onProgress: this.loadprogress.bind(this)
};
loader.load(loaderContext, loaderConfig, loaderCallbacks);
};
FragmentLoader.prototype.loadsuccess = function loadsuccess(response, stats, context) {
var networkDetails = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : null;
var payload = response.data,
frag = context.frag;
// detach fragment loader on load success
frag.loader = undefined;
this.loaders[frag.type] = undefined;
this.hls.trigger(events["a" /* default */].FRAG_LOADED, { payload: payload, frag: frag, stats: stats, networkDetails: networkDetails });
};
FragmentLoader.prototype.loaderror = function loaderror(response, context) {
var networkDetails = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null;
var loader = context.loader;
if (loader) {
loader.abort();
}
this.loaders[context.type] = undefined;
this.hls.trigger(events["a" /* default */].ERROR, { type: errors["b" /* ErrorTypes */].NETWORK_ERROR, details: errors["a" /* ErrorDetails */].FRAG_LOAD_ERROR, fatal: false, frag: context.frag, response: response, networkDetails: networkDetails })...
};
FragmentLoader.prototype.loadtimeout = function loadtimeout(stats, context) {
var networkDetails = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null;
var loader = context.loader;
if (loader) {
loader.abort();
}
this.loaders[context.type] = undefined;
this.hls.trigger(events["a" /* default */].ERROR, { type: errors["b" /* ErrorTypes */].NETWORK_ERROR, details: errors["a" /* ErrorDetails */].FRAG_LOAD_TIMEOUT, fatal: false, frag: context.frag, networkDetails: networkDetails });
};
// data will be used for progressive parsing
FragmentLoader.prototype.loadprogress = function loadprogress(stats, context, data) {
var networkDetails = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : null;
// jshint ignore:line
var frag = context.frag;
frag.loaded = stats.loaded;
this.hls.trigger(events["a" /* default */].FRAG_LOAD_PROGRESS, { frag: frag, stats: stats, networkDetails: networkDetails });
};
return FragmentLoader;
}(event_handler);
/* harmony default export */ var fragment_loader = (fragment_loader_FragmentLoader);
// CONCATENATED MODULE: ./src/loader/key-loader.js
function key_loader__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function key_loader__possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; ...
function key_loader__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.cr...
/*
* Decrypt key Loader
*/
var key_loader_KeyLoader = function (_EventHandler) {
key_loader__inherits(KeyLoader, _EventHandler);
function KeyLoader(hls) {
key_loader__classCallCheck(this, KeyLoader);
var _this = key_loader__possibleConstructorReturn(this, _EventHandler.call(this, hls, events["a" /* default */].KEY_LOADING));
_this.loaders = {};
_this.decryptkey = null;
_this.decrypturl = null;
return _this;
}
KeyLoader.prototype.destroy = function destroy() {
for (var loaderName in this.loaders) {
var loader = this.loaders[loaderName];
if (loader) {
loader.destroy();
}
}
this.loaders = {};
event_handler.prototype.destroy.call(this);
};
KeyLoader.prototype.onKeyLoading = function onKeyLoading(data) {
var frag = data.frag,
type = frag.type,
loader = this.loaders[type],
decryptdata = frag.decryptdata,
uri = decryptdata.uri;
// if uri is different from previous one or if decrypt key not retrieved yet
if (uri !== this.decrypturl || this.decryptkey === null) {
var config = this.hls.config;
if (loader) {
logger["b" /* logger */].warn('abort previous key loader for type:' + type);
loader.abort();
}
frag.loader = this.loaders[type] = new config.loader(config);
this.decrypturl = uri;
this.decryptkey = null;
var loaderContext = void 0,
loaderConfig = void 0,
loaderCallbacks = void 0;
loaderContext = { url: uri, frag: frag, responseType: 'arraybuffer' };
loaderConfig = { timeout: config.fragLoadingTimeOut, maxRetry: config.fragLoadingMaxRetry, retryDelay: config.fragLoadingRetryDelay, maxRetryDelay: config.fragLoadingMaxRetryTimeout };
loaderCallbacks = { onSuccess: this.loadsuccess.bind(this), onError: this.loaderror.bind(this), onTimeout: this.loadtimeout.bind(this) };
frag.loader.load(loaderContext, loaderConfig, loaderCallbacks);
} else if (this.decryptkey) {
// we already loaded this key, return it
decryptdata.key = this.decryptkey;
this.hls.trigger(events["a" /* default */].KEY_LOADED, { frag: frag });
}
};
KeyLoader.prototype.loadsuccess = function loadsuccess(response, stats, context) {
var frag = context.frag;
this.decryptkey = frag.decryptdata.key = new Uint8Array(response.data);
// detach fragment loader on load success
frag.loader = undefined;
this.loaders[frag.type] = undefined;
this.hls.trigger(events["a" /* default */].KEY_LOADED, { frag: frag });
};
KeyLoader.prototype.loaderror = function loaderror(response, context) {
var frag = context.frag,
loader = frag.loader;
if (loader) {
loader.abort();
}
this.loaders[context.type] = undefined;
this.hls.trigger(events["a" /* default */].ERROR, { type: errors["b" /* ErrorTypes */].NETWORK_ERROR, details: errors["a" /* ErrorDetails */].KEY_LOAD_ERROR, fatal: false, frag: frag, response: response });
};
KeyLoader.prototype.loadtimeout = function loadtimeout(stats, context) {
var frag = context.frag,
loader = frag.loader;
if (loader) {
loader.abort();
}
this.loaders[context.type] = undefined;
this.hls.trigger(events["a" /* default */].ERROR, { type: errors["b" /* ErrorTypes */].NETWORK_ERROR, details: errors["a" /* ErrorDetails */].KEY_LOAD_TIMEOUT, fatal: false, frag: frag });
};
return KeyLoader;
}(event_handler);
/* harmony default export */ var key_loader = (key_loader_KeyLoader);
// CONCATENATED MODULE: ./src/controller/fragment-tracker.js
function fragment_tracker__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function fragment_tracker__possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : ...
function fragment_tracker__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 = Obj...
var FragmentState = {
NOT_LOADED: 'NOT_LOADED',
APPENDING: 'APPENDING',
PARTIAL: 'PARTIAL',
OK: 'OK'
};
var fragment_tracker_FragmentTracker = function (_EventHandler) {
fragment_tracker__inherits(FragmentTracker, _EventHandler);
function FragmentTracker(hls) {
fragment_tracker__classCallCheck(this, FragmentTracker);
var _this = fragment_tracker__possibleConstructorReturn(this, _EventHandler.call(this, hls, events["a" /* default */].BUFFER_APPENDED, events["a" /* default */].FRAG_BUFFERED, events["a" /* default */].FRAG_LOADED));
_this.bufferPadding = 0.2;
_this.fragments = Object.create(null);
_this.timeRanges = Object.create(null);
_this.config = hls.config;
return _this;
}
FragmentTracker.prototype.destroy = function destroy() {
this.fragments = null;
this.timeRanges = null;
this.config = null;
event_handler.prototype.destroy.call(this);
_EventHandler.prototype.destroy.call(this);
};
/**
* Return a Fragment that match the position and levelType.
* If not found any Fragment, return null
* @param {number} position
* @param {LevelType} levelType
* @returns {Fragment|null}
*/
FragmentTracker.prototype.getBufferedFrag = function getBufferedFrag(position, levelType) {
var fragments = this.fragments;
var bufferedFrags = Object.keys(fragments).filter(function (key) {
var fragmentEntity = fragments[key];
if (fragmentEntity.body.type !== levelType) {
return false;
}
if (!fragmentEntity.buffered) {
return false;
}
var frag = fragmentEntity.body;
return frag.startPTS <= position && position <= frag.endPTS;
});
if (bufferedFrags.length === 0) {
return null;
} else {
// https://github.com/video-dev/hls.js/pull/1545#discussion_r166229566
var bufferedFragKey = bufferedFrags.pop();
return fragments[bufferedFragKey].body;
}
};
/**
* Partial fragments effected by coded frame eviction will be removed
* The browser will unload parts of the buffer to free up memory for new buffer data
* Fragments will need to be reloaded when the buffer is freed up, removing partial fragments will allow them to reload(since there might be parts that are still playable)
* @param {String} elementaryStream The elementaryStream of media this is (eg. video/audio)
* @param {TimeRanges} timeRange TimeRange object from a sourceBuffer
*/
FragmentTracker.prototype.detectEvictedFragments = function detectEvictedFragments(elementaryStream, timeRange) {
var _this2 = this;
var fragmentTimes = void 0,
time = void 0;
// Check if any flagged fragments have been unloaded
Object.keys(this.fragments).forEach(function (key) {
var fragmentEntity = _this2.fragments[key];
if (fragmentEntity.buffered === true) {
var esData = fragmentEntity.range[elementaryStream];
if (esData) {
fragmentTimes = esData.time;
for (var i = 0; i < fragmentTimes.length; i++) {
time = fragmentTimes[i];
if (_this2.isTimeBuffered(time.startPTS, time.endPTS, timeRange) === false) {
// Unregister partial fragment as it needs to load again to be reused
_this2.removeFragment(fragmentEntity.body);
break;
}
}
}
}
});
};
/**
* Checks if the fragment passed in is loaded in the buffer properly
* Partially loaded fragments will be registered as a partial fragment
* @param {Object} fragment Check the fragment against all sourceBuffers loaded
*/
FragmentTracker.prototype.detectPartialFragments = function detectPartialFragments(fragment) {
var _this3 = this;
var fragKey = this.getFragmentKey(fragment);
var fragmentEntity = this.fragments[fragKey];
if (fragmentEntity) {
fragmentEntity.buffered = true;
Object.keys(this.timeRanges).forEach(function (elementaryStream) {
if (fragment.hasElementaryStream(elementaryStream) === true) {
var timeRange = _this3.timeRanges[elementaryStream];
// Check for malformed fragments
// Gaps need to be calculated for each elementaryStream
fragmentEntity.range[elementaryStream] = _this3.getBufferedTimes(fragment.startPTS, fragment.endPTS, timeRange);
}
});
}
};
FragmentTracker.prototype.getBufferedTimes = function getBufferedTimes(startPTS, endPTS, timeRange) {
var fragmentTimes = [];
var startTime = void 0,
endTime = void 0;
var fragmentPartial = false;
for (var i = 0; i < timeRange.length; i++) {
startTime = timeRange.start(i) - this.bufferPadding;
endTime = timeRange.end(i) + this.bufferPadding;
if (startPTS >= startTime && endPTS <= endTime) {
// Fragment is entirely contained in buffer
// No need to check the other timeRange times since it's completely playable
fragmentTimes.push({
startPTS: Math.max(startPTS, timeRange.start(i)),
endPTS: Math.min(endPTS, timeRange.end(i))
});
break;
} else if (startPTS < endTime && endPTS > startTime) {
// Check for intersection with buffer
// Get playable sections of the fragment
fragmentTimes.push({
startPTS: Math.max(startPTS, timeRange.start(i)),
endPTS: Math.min(endPTS, timeRange.end(i))
});
fragmentPartial = true;
} else if (endPTS <= startTime) {
// No need to check the rest of the timeRange as it is in order
break;
}
}
return {
time: fragmentTimes,
partial: fragmentPartial
};
};
FragmentTracker.prototype.getFragmentKey = function getFragmentKey(fragment) {
return fragment.type + '_' + fragment.level + '_' + fragment.urlId + '_' + fragment.sn;
};
/**
* Gets the partial fragment for a certain time
* @param {Number} time
* @returns {Object} fragment Returns a partial fragment at a time or null if there is no partial fragment
*/
FragmentTracker.prototype.getPartialFragment = function getPartialFragment(time) {
var _this4 = this;
var timePadding = void 0,
startTime = void 0,
endTime = void 0;
var bestFragment = null;
var bestOverlap = 0;
Object.keys(this.fragments).forEach(function (key) {
var fragmentEntity = _this4.fragments[key];
if (_this4.isPartial(fragmentEntity)) {
startTime = fragmentEntity.body.startPTS - _this4.bufferPadding;
endTime = fragmentEntity.body.endPTS + _this4.bufferPadding;
if (time >= startTime && time <= endTime) {
// Use the fragment that has the most padding from start and end time
timePadding = Math.min(time - startTime, endTime - time);
if (bestOverlap <= timePadding) {
bestFragment = fragmentEntity.body;
bestOverlap = timePadding;
}
}
}
});
return bestFragment;
};
/**
* @param {Object} fragment The fragment to check
* @returns {String} Returns the fragment state when a fragment never loaded or if it partially loaded
*/
FragmentTracker.prototype.getState = function getState(fragment) {
var fragKey = this.getFragmentKey(fragment);
var fragmentEntity = this.fragments[fragKey];
var state = FragmentState.NOT_LOADED;
if (fragmentEntity !== undefined) {
if (!fragmentEntity.buffered) {
state = FragmentState.APPENDING;
} else if (this.isPartial(fragmentEntity) === true) {
state = FragmentState.PARTIAL;
} else {
state = FragmentState.OK;
}
}
return state;
};
FragmentTracker.prototype.isPartial = function isPartial(fragmentEntity) {
return fragmentEntity.buffered === true && (fragmentEntity.range.video !== undefined && fragmentEntity.range.video.partial === true || fragmentEntity.range.audio !== undefined && fragmentEntity.range.audio.partial === true);
};
FragmentTracker.prototype.isTimeBuffered = function isTimeBuffered(startPTS, endPTS, timeRange) {
var startTime = void 0,
endTime = void 0;
for (var i = 0; i < timeRange.length; i++) {
startTime = timeRange.start(i) - this.bufferPadding;
endTime = timeRange.end(i) + this.bufferPadding;
if (startPTS >= startTime && endPTS <= endTime) {
return true;
}
if (endPTS <= startTime) {
// No need to check the rest of the timeRange as it is in order
return false;
}
}
return false;
};
/**
* Fires when a fragment loading is completed
*/
FragmentTracker.prototype.onFragLoaded = function onFragLoaded(e) {
var fragment = e.frag;
// don't track initsegment (for which sn is not a number)
// don't track frags used for bitrateTest, they're irrelevant.
if (!isNaN(fragment.sn) && !fragment.bitrateTest) {
var fragKey = this.getFragmentKey(fragment);
var fragmentEntity = {
body: fragment,
range: Object.create(null),
buffered: false
};
this.fragments[fragKey] = fragmentEntity;
}
};
/**
* Fires when the buffer is updated
*/
FragmentTracker.prototype.onBufferAppended = function onBufferAppended(e) {
var _this5 = this;
// Store the latest timeRanges loaded in the buffer
this.timeRanges = e.timeRanges;
Object.keys(this.timeRanges).forEach(function (elementaryStream) {
var timeRange = _this5.timeRanges[elementaryStream];
_this5.detectEvictedFragments(elementaryStream, timeRange);
});
};
/**
* Fires after a fragment has been loaded into the source buffer
*/
FragmentTracker.prototype.onFragBuffered = function onFragBuffered(e) {
this.detectPartialFragments(e.frag);
};
/**
* Return true if fragment tracker has the fragment.
* @param {Object} fragment
* @returns {boolean}
*/
FragmentTracker.prototype.hasFragment = function hasFragment(fragment) {
var fragKey = this.getFragmentKey(fragment);
return this.fragments[fragKey] !== undefined;
};
/**
* Remove a fragment from fragment tracker until it is loaded again
* @param {Object} fragment The fragment to remove
*/
FragmentTracker.prototype.removeFragment = function removeFragment(fragment) {
var fragKey = this.getFragmentKey(fragment);
delete this.fragments[fragKey];
};
/**
* Remove all fragments from fragment tracker.
*/
FragmentTracker.prototype.removeAllFragments = function removeAllFragments() {
this.fragments = Object.create(null);
};
return FragmentTracker;
}(event_handler);
// CONCATENATED MODULE: ./src/utils/binary-search.js
var BinarySearch = {
/**
* Searches for an item in an array which matches a certain condition.
* This requires the condition to only match one item in the array,
* and for the array to be ordered.
*
* @param {Array} list The array to search.
* @param {Function} comparisonFunction
* Called and provided a candidate item as the first argument.
* Should return:
* > -1 if the item should be located at a lower index than the provided item.
* > 1 if the item should be located at a higher index than the provided item.
* > 0 if the item is the item you're looking for.
*
* @return {*} The object if it is found or null otherwise.
*/
search: function search(list, comparisonFunction) {
var minIndex = 0;
var maxIndex = list.length - 1;
var currentIndex = null;
var currentElement = null;
while (minIndex <= maxIndex) {
currentIndex = (minIndex + maxIndex) / 2 | 0;
currentElement = list[currentIndex];
var comparisonResult = comparisonFunction(currentElement);
if (comparisonResult > 0) {
minIndex = currentIndex + 1;
} else if (comparisonResult < 0) {
maxIndex = currentIndex - 1;
} else {
return currentElement;
}
}
return null;
}
};
/* harmony default export */ var binary_search = (BinarySearch);
// CONCATENATED MODULE: ./src/utils/buffer-helper.js
function buffer_helper__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
/**
* @module BufferHelper
*
* Providing methods dealing with buffer length retrieval for example.
*
* In general, a helper around HTML5 MediaElement TimeRanges gathered from `buffered` property.
*
* Also @see https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/buffered
*/
var BufferHelper = function () {
share/public_html/static/hls.js view on Meta::CPAN
// EXTERNAL MODULE: ./src/demux/demuxer-inline.js + 11 modules
var demuxer_inline = __webpack_require__(9);
// CONCATENATED MODULE: ./src/utils/mediasource-helper.js
/**
* MediaSource helper
*/
function getMediaSource() {
if (typeof window !== 'undefined') {
return window.MediaSource || window.WebKitMediaSource;
}
}
// EXTERNAL MODULE: ./src/utils/get-self-scope.js
var get_self_scope = __webpack_require__(3);
// CONCATENATED MODULE: ./src/demux/demuxer.js
function demuxer__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
// see https://stackoverflow.com/a/11237259/589493
var global = Object(get_self_scope["a" /* getSelfScope */])(); // safeguard for code that might run both on worker and main thread
var MediaSource = getMediaSource();
var demuxer_Demuxer = function () {
function Demuxer(hls, id) {
demuxer__classCallCheck(this, Demuxer);
this.hls = hls;
this.id = id;
// observer setup
var observer = this.observer = new events_default.a();
var config = hls.config;
observer.trigger = function trigger(event) {
for (var _len = arguments.length, data = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
data[_key - 1] = arguments[_key];
}
observer.emit.apply(observer, [event, event].concat(data));
};
observer.off = function off(event) {
for (var _len2 = arguments.length, data = Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
data[_key2 - 1] = arguments[_key2];
}
observer.removeListener.apply(observer, [event].concat(data));
};
var forwardMessage = function (ev, data) {
data = data || {};
data.frag = this.frag;
data.id = this.id;
hls.trigger(ev, data);
}.bind(this);
// forward events to main thread
observer.on(events["a" /* default */].FRAG_DECRYPTED, forwardMessage);
observer.on(events["a" /* default */].FRAG_PARSING_INIT_SEGMENT, forwardMessage);
observer.on(events["a" /* default */].FRAG_PARSING_DATA, forwardMessage);
observer.on(events["a" /* default */].FRAG_PARSED, forwardMessage);
observer.on(events["a" /* default */].ERROR, forwardMessage);
observer.on(events["a" /* default */].FRAG_PARSING_METADATA, forwardMessage);
observer.on(events["a" /* default */].FRAG_PARSING_USERDATA, forwardMessage);
observer.on(events["a" /* default */].INIT_PTS_FOUND, forwardMessage);
var typeSupported = {
mp4: MediaSource.isTypeSupported('video/mp4'),
mpeg: MediaSource.isTypeSupported('audio/mpeg'),
mp3: MediaSource.isTypeSupported('audio/mp4; codecs="mp3"')
};
// navigator.vendor is not always available in Web Worker
// refer to https://developer.mozilla.org/en-US/docs/Web/API/WorkerGlobalScope/navigator
var vendor = navigator.vendor;
if (config.enableWorker && typeof Worker !== 'undefined') {
logger["b" /* logger */].log('demuxing in webworker');
var w = void 0;
try {
w = this.w = webworkify_webpack_default()(/*require.resolve*/(12));
this.onwmsg = this.onWorkerMessage.bind(this);
w.addEventListener('message', this.onwmsg);
w.onerror = function (event) {
hls.trigger(events["a" /* default */].ERROR, { type: errors["b" /* ErrorTypes */].OTHER_ERROR, details: errors["a" /* ErrorDetails */].INTERNAL_EXCEPTION, fatal: true, event: 'demuxerWorker', err: { message: event.message + ' (' + event.fil...
};
w.postMessage({ cmd: 'init', typeSupported: typeSupported, vendor: vendor, id: id, config: JSON.stringify(config) });
} catch (err) {
logger["b" /* logger */].error('error while initializing DemuxerWorker, fallback on DemuxerInline');
if (w) {
// revoke the Object URL that was used to create demuxer worker, so as not to leak it
global.URL.revokeObjectURL(w.objectURL);
}
this.demuxer = new demuxer_inline["a" /* default */](observer, typeSupported, config, vendor);
this.w = undefined;
}
} else {
this.demuxer = new demuxer_inline["a" /* default */](observer, typeSupported, config, vendor);
}
}
Demuxer.prototype.destroy = function destroy() {
var w = this.w;
if (w) {
w.removeEventListener('message', this.onwmsg);
w.terminate();
this.w = null;
} else {
var demuxer = this.demuxer;
if (demuxer) {
demuxer.destroy();
this.demuxer = null;
}
}
var observer = this.observer;
if (observer) {
observer.removeAllListeners();
this.observer = null;
}
};
Demuxer.prototype.push = function push(data, initSegment, audioCodec, videoCodec, frag, duration, accurateTimeOffset, defaultInitPTS) {
var w = this.w;
var timeOffset = !isNaN(frag.startDTS) ? frag.startDTS : frag.start;
var decryptdata = frag.decryptdata;
var lastFrag = this.frag;
var discontinuity = !(lastFrag && frag.cc === lastFrag.cc);
var trackSwitch = !(lastFrag && frag.level === lastFrag.level);
var nextSN = lastFrag && frag.sn === lastFrag.sn + 1;
var contiguous = !trackSwitch && nextSN;
if (discontinuity) {
logger["b" /* logger */].log(this.id + ':discontinuity detected');
}
if (trackSwitch) {
logger["b" /* logger */].log(this.id + ':switch detected');
}
this.frag = frag;
if (w) {
// post fragment payload as transferable objects for ArrayBuffer (no copy)
w.postMessage({ cmd: 'demux', data: data, decryptdata: decryptdata, initSegment: initSegment, audioCodec: audioCodec, videoCodec: videoCodec, timeOffset: timeOffset, discontinuity: discontinuity, trackSwitch: trackSwitch, contiguous: contiguous...
} else {
var demuxer = this.demuxer;
if (demuxer) {
demuxer.push(data, decryptdata, initSegment, audioCodec, videoCodec, timeOffset, discontinuity, trackSwitch, contiguous, duration, accurateTimeOffset, defaultInitPTS);
}
}
};
Demuxer.prototype.onWorkerMessage = function onWorkerMessage(ev) {
var data = ev.data,
hls = this.hls;
switch (data.event) {
case 'init':
// revoke the Object URL that was used to create demuxer worker, so as not to leak it
global.URL.revokeObjectURL(this.w.objectURL);
break;
// special case for FRAG_PARSING_DATA: data1 and data2 are transferable objects
case events["a" /* default */].FRAG_PARSING_DATA:
data.data.data1 = new Uint8Array(data.data1);
if (data.data2) {
data.data.data2 = new Uint8Array(data.data2);
}
/* falls through */
default:
data.data = data.data || {};
data.data.frag = this.frag;
data.data.id = this.id;
hls.trigger(data.event, data.data);
break;
}
};
return Demuxer;
}();
/* harmony default export */ var demux_demuxer = (demuxer_Demuxer);
// CONCATENATED MODULE: ./src/controller/level-helper.js
/**
* @module LevelHelper
*
* Providing methods dealing with playlist sliding and drift
*
* TODO: Create an actual `Level` class/model that deals with all this logic in an object-oriented-manner.
*
* */
function addGroupId(level, type, id) {
switch (type) {
case 'audio':
if (!level.audioGroupIds) {
level.audioGroupIds = [];
}
level.audioGroupIds.push(id);
break;
case 'text':
if (!level.textGroupIds) {
level.textGroupIds = [];
}
level.textGroupIds.push(id);
break;
}
}
function updatePTS(fragments, fromIdx, toIdx) {
var fragFrom = fragments[fromIdx],
fragTo = fragments[toIdx],
fragToPTS = fragTo.startPTS;
// if we know startPTS[toIdx]
if (!isNaN(fragToPTS)) {
// update fragment duration.
// it helps to fix drifts between playlist reported duration and fragment real duration
if (toIdx > fromIdx) {
fragFrom.duration = fragToPTS - fragFrom.start;
if (fragFrom.duration < 0) {
logger["b" /* logger */].warn('negative duration computed for frag ' + fragFrom.sn + ',level ' + fragFrom.level + ', there should be some duration drift between playlist and fragment!');
}
} else {
fragTo.duration = fragFrom.start - fragToPTS;
if (fragTo.duration < 0) {
logger["b" /* logger */].warn('negative duration computed for frag ' + fragTo.sn + ',level ' + fragTo.level + ', there should be some duration drift between playlist and fragment!');
}
}
} else {
// we dont know startPTS[toIdx]
if (toIdx > fromIdx) {
fragTo.start = fragFrom.start + fragFrom.duration;
} else {
fragTo.start = Math.max(fragFrom.start - fragTo.duration, 0);
}
}
}
function updateFragPTSDTS(details, frag, startPTS, endPTS, startDTS, endDTS) {
// update frag PTS/DTS
var maxStartPTS = startPTS;
if (!isNaN(frag.startPTS)) {
// delta PTS between audio and video
var deltaPTS = Math.abs(frag.startPTS - startPTS);
if (isNaN(frag.deltaPTS)) {
frag.deltaPTS = deltaPTS;
} else {
frag.deltaPTS = Math.max(deltaPTS, frag.deltaPTS);
}
maxStartPTS = Math.max(startPTS, frag.startPTS);
startPTS = Math.min(startPTS, frag.startPTS);
endPTS = Math.max(endPTS, frag.endPTS);
startDTS = Math.min(startDTS, frag.startDTS);
endDTS = Math.max(endDTS, frag.endDTS);
}
var drift = startPTS - frag.start;
frag.start = frag.startPTS = startPTS;
frag.maxStartPTS = maxStartPTS;
frag.endPTS = endPTS;
frag.startDTS = startDTS;
frag.endDTS = endDTS;
frag.duration = endPTS - startPTS;
var sn = frag.sn;
// exit if sn out of range
if (!details || sn < details.startSN || sn > details.endSN) {
return 0;
}
var fragIdx = void 0,
fragments = void 0,
i = void 0;
fragIdx = sn - details.startSN;
fragments = details.fragments;
// update frag reference in fragments array
// rationale is that fragments array might not contain this frag object.
// this will happpen if playlist has been refreshed between frag loading and call to updateFragPTSDTS()
// if we don't update frag, we won't be able to propagate PTS info on the playlist
// resulting in invalid sliding computation
fragments[fragIdx] = frag;
// adjust fragment PTS/duration from seqnum-1 to frag 0
for (i = fragIdx; i > 0; i--) {
updatePTS(fragments, i, i - 1);
}
// adjust fragment PTS/duration from seqnum to last frag
for (i = fragIdx; i < fragments.length - 1; i++) {
updatePTS(fragments, i, i + 1);
}
details.PTSKnown = true;
// logger.log(` frag start/end:${startPTS.toFixed(3)}/${endPTS.toFixed(3)}`);
return drift;
}
function mergeDetails(oldDetails, newDetails) {
var start = Math.max(oldDetails.startSN, newDetails.startSN) - newDetails.startSN,
end = Math.min(oldDetails.endSN, newDetails.endSN) - newDetails.startSN,
delta = newDetails.startSN - oldDetails.startSN,
oldfragments = oldDetails.fragments,
newfragments = newDetails.fragments,
ccOffset = 0,
PTSFrag = void 0;
// potentially retrieve cached initsegment
if (newDetails.initSegment && oldDetails.initSegment) {
newDetails.initSegment = oldDetails.initSegment;
}
// check if old/new playlists have fragments in common
if (end < start) {
newDetails.PTSKnown = false;
return;
}
// loop through overlapping SN and update startPTS , cc, and duration if any found
for (var i = start; i <= end; i++) {
var oldFrag = oldfragments[delta + i],
newFrag = newfragments[i];
if (newFrag && oldFrag) {
ccOffset = oldFrag.cc - newFrag.cc;
if (!isNaN(oldFrag.startPTS)) {
newFrag.start = newFrag.startPTS = oldFrag.startPTS;
newFrag.endPTS = oldFrag.endPTS;
newFrag.duration = oldFrag.duration;
newFrag.backtracked = oldFrag.backtracked;
newFrag.dropped = oldFrag.dropped;
PTSFrag = newFrag;
}
}
}
if (ccOffset) {
logger["b" /* logger */].log('discontinuity sliding from playlist, take drift into account');
for (i = 0; i < newfragments.length; i++) {
newfragments[i].cc += ccOffset;
}
}
// if at least one fragment contains PTS info, recompute PTS information for all fragments
if (PTSFrag) {
updateFragPTSDTS(newDetails, PTSFrag, PTSFrag.startPTS, PTSFrag.endPTS, PTSFrag.startDTS, PTSFrag.endDTS);
} else {
// ensure that delta is within oldfragments range
// also adjust sliding in case delta is 0 (we could have old=[50-60] and new=old=[50-61])
// in that case we also need to adjust start offset of all fragments
if (delta >= 0 && delta < oldfragments.length) {
// adjust start by sliding offset
var sliding = oldfragments[delta].start;
for (i = 0; i < newfragments.length; i++) {
newfragments[i].start += sliding;
}
}
}
// if we are here, it means we have fragments overlapping between
// old and new level. reliable PTS info is thus relying on old level
newDetails.PTSKnown = oldDetails.PTSKnown;
}
// CONCATENATED MODULE: ./src/utils/time-ranges.js
/**
* TimeRanges to string helper
*/
var TimeRanges = {
toString: function toString(r) {
var log = '',
len = r.length;
for (var i = 0; i < len; i++) {
log += '[' + r.start(i).toFixed(3) + ',' + r.end(i).toFixed(3) + ']';
}
return log;
}
};
/* harmony default export */ var time_ranges = (TimeRanges);
// CONCATENATED MODULE: ./src/utils/discontinuities.js
function findFirstFragWithCC(fragments, cc) {
var firstFrag = null;
for (var i = 0; i < fragments.length; i += 1) {
var currentFrag = fragments[i];
if (currentFrag && currentFrag.cc === cc) {
firstFrag = currentFrag;
break;
}
}
return firstFrag;
}
function findFragWithCC(fragments, CC) {
return binary_search.search(fragments, function (candidate) {
if (candidate.cc < CC) {
return 1;
} else if (candidate.cc > CC) {
return -1;
} else {
return 0;
}
});
}
function shouldAlignOnDiscontinuities(lastFrag, lastLevel, details) {
var shouldAlign = false;
if (lastLevel && lastLevel.details && details) {
if (details.endCC > details.startCC || lastFrag && lastFrag.cc < details.startCC) {
shouldAlign = true;
}
}
return shouldAlign;
}
// Find the first frag in the previous level which matches the CC of the first frag of the new level
function findDiscontinuousReferenceFrag(prevDetails, curDetails) {
var prevFrags = prevDetails.fragments;
var curFrags = curDetails.fragments;
if (!curFrags.length || !prevFrags.length) {
logger["b" /* logger */].log('No fragments to align');
return;
}
var prevStartFrag = findFirstFragWithCC(prevFrags, curFrags[0].cc);
if (!prevStartFrag || prevStartFrag && !prevStartFrag.startPTS) {
logger["b" /* logger */].log('No frag in previous level to align on');
return;
}
return prevStartFrag;
}
function adjustPts(sliding, details) {
details.fragments.forEach(function (frag) {
if (frag) {
var start = frag.start + sliding;
frag.start = frag.startPTS = start;
frag.endPTS = start + frag.duration;
}
});
details.PTSKnown = true;
}
// If a change in CC is detected, the PTS can no longer be relied upon
// Attempt to align the level by using the last level - find the last frag matching the current CC and use it's PTS
// as a reference
function alignDiscontinuities(lastFrag, lastLevel, details) {
if (shouldAlignOnDiscontinuities(lastFrag, lastLevel, details)) {
var referenceFrag = findDiscontinuousReferenceFrag(lastLevel.details, details);
if (referenceFrag) {
logger["b" /* logger */].log('Adjusting PTS using last level due to CC increase within current level');
adjustPts(referenceFrag.start, details);
}
}
// try to align using programDateTime attribute (if available)
if (details.PTSKnown === false && lastLevel && lastLevel.details && lastLevel.details.fragments && lastLevel.details.fragments.length) {
// if last level sliding is 1000 and its first frag PROGRAM-DATE-TIME is 2017-08-20 1:10:00 AM
// and if new details first frag PROGRAM DATE-TIME is 2017-08-20 1:10:08 AM
// then we can deduce that playlist B sliding is 1000+8 = 1008s
var lastPDT = lastLevel.details.programDateTime;
var newPDT = details.programDateTime;
// date diff is in ms. frag.start is in seconds
var sliding = (newPDT - lastPDT) / 1000 + lastLevel.details.fragments[0].start;
if (!isNaN(sliding)) {
logger["b" /* logger */].log('adjusting PTS using programDateTime delta, sliding:' + sliding.toFixed(3));
adjustPts(sliding, details);
}
}
}
// CONCATENATED MODULE: ./src/task-loop.js
function task_loop__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function task_loop__possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
function task_loop__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.cre...
/**
* Sub-class specialization of EventHandler base class.
*
* TaskLoop allows to schedule a task function being called (optionnaly repeatedly) on the main loop,
* scheduled asynchroneously, avoiding recursive calls in the same tick.
*
* The task itself is implemented in `doTick`. It can be requested and called for single execution
* using the `tick` method.
*
* It will be assured that the task execution method (`tick`) only gets called once per main loop "tick",
* no matter how often it gets requested for execution. Execution in further ticks will be scheduled accordingly.
*
* If further execution requests have already been scheduled on the next tick, it can be checked with `hasNextTick`,
* and cancelled with `clearNextTick`.
*
* The task can be scheduled as an interval repeatedly with a period as parameter (see `setInterval`, `clearInterval`).
*
* Sub-classes need to implement the `doTick` method which will effectively have the task execution routine.
*
* Further explanations:
*
* The baseclass has a `tick` method that will schedule the doTick call. It may be called synchroneously
* only for a stack-depth of one. On re-entrant calls, sub-sequent calls are scheduled for next main loop ticks.
*
* When the task execution (`tick` method) is called in re-entrant way this is detected and
* we are limiting the task execution per call stack to exactly one, but scheduling/post-poning further
* task processing on the next main loop iteration (also known as "next tick" in the Node/JS runtime lingo).
*/
var TaskLoop = function (_EventHandler) {
task_loop__inherits(TaskLoop, _EventHandler);
function TaskLoop(hls) {
task_loop__classCallCheck(this, TaskLoop);
for (var _len = arguments.length, events = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
events[_key - 1] = arguments[_key];
}
var _this = task_loop__possibleConstructorReturn(this, _EventHandler.call.apply(_EventHandler, [this, hls].concat(events)));
_this._tickInterval = null;
_this._tickTimer = null;
_this._tickCallCount = 0;
_this._boundTick = _this.tick.bind(_this);
share/public_html/static/hls.js view on Meta::CPAN
};
return clearInterval;
}(function () {
if (this._tickInterval) {
clearInterval(this._tickInterval);
this._tickInterval = null;
return true;
}
return false;
});
/**
* @returns {boolean} True when timeout was cleared, false when none was set (no effect)
*/
TaskLoop.prototype.clearNextTick = function clearNextTick() {
if (this._tickTimer) {
clearTimeout(this._tickTimer);
this._tickTimer = null;
return true;
}
return false;
};
/**
* Will call the subclass doTick implementation in this main loop tick
* or in the next one (via setTimeout(,0)) in case it has already been called
* in this tick (in case this is a re-entrant call).
*/
TaskLoop.prototype.tick = function tick() {
this._tickCallCount++;
if (this._tickCallCount === 1) {
this.doTick();
// re-entrant call to tick from previous doTick call stack
// -> schedule a call on the next main loop iteration to process this task processing request
if (this._tickCallCount > 1) {
// make sure only one timer exists at any time at max
this.clearNextTick();
this._tickTimer = setTimeout(this._boundTick, 0);
}
this._tickCallCount = 0;
}
};
/**
* For subclass to implement task logic
* @abstract
*/
TaskLoop.prototype.doTick = function doTick() {};
return TaskLoop;
}(event_handler);
/* harmony default export */ var task_loop = (TaskLoop);
// CONCATENATED MODULE: ./src/controller/fragment-finders.js
/**
* Calculates the PDT of the next load position.
* bufferEnd in this function is usually the position of the playhead.
* @param {number} [start = 0] - The PTS of the first fragment within the level
* @param {number} [bufferEnd = 0] - The end of the contiguous buffered range the playhead is currently within
* @param {*} levelDetails - An object containing the parsed and computed properties of the currently playing level
* @returns {number} nextPdt - The computed PDT
*/
function calculateNextPDT() {
var start = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 0;
var bufferEnd = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
var levelDetails = arguments[2];
var pdt = 0;
if (levelDetails.programDateTime) {
var parsedDateInt = Date.parse(levelDetails.programDateTime);
if (!isNaN(parsedDateInt)) {
pdt = bufferEnd * 1000 + parsedDateInt - 1000 * start;
}
}
return pdt;
}
/**
* Finds the first fragment whose endPDT value exceeds the given PDT.
* @param {Array<Fragment>} fragments - The array of candidate fragments
* @param {number|null} [PDTValue = null] - The PDT value which must be exceeded
* @returns {*|null} fragment - The best matching fragment
*/
function findFragmentByPDT(fragments) {
var PDTValue = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;
if (!Array.isArray(fragments) || !fragments.length || PDTValue === null) {
return null;
}
// if less than start
var firstSegment = fragments[0];
if (PDTValue < firstSegment.pdt) {
return null;
}
var lastSegment = fragments[fragments.length - 1];
if (PDTValue >= lastSegment.endPdt) {
return null;
}
for (var seg = 0; seg < fragments.length; ++seg) {
var frag = fragments[seg];
if (PDTValue < frag.endPdt) {
return frag;
}
}
return null;
}
/**
* Finds a fragment based on the SN of the previous fragment; or based on the needs of the current buffer.
* This method compensates for small buffer gaps by applying a tolerance to the start of any candidate fragment, thus
* breaking any traps which would cause the same fragment to be continuously selected within a small range.
* @param {*} fragPrevious - The last frag successfully appended
* @param {Array<Fragment>} fragments - The array of candidate fragments
* @param {number} [bufferEnd = 0] - The end of the contiguous buffered range the playhead is currently within
* @param {number} [end = 0] - The computed end time of the stream
* @param {number} maxFragLookUpTolerance - The amount of time that a fragment's start can be within in order to be considered contiguous
* @returns {*} foundFrag - The best matching fragment
*/
function findFragmentBySN(fragPrevious, fragments) {
var bufferEnd = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 0;
var end = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : 0;
var maxFragLookUpTolerance = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : 0;
var foundFrag = void 0;
var fragNext = fragPrevious ? fragments[fragPrevious.sn - fragments[0].sn + 1] : null;
if (bufferEnd < end) {
if (bufferEnd > end - maxFragLookUpTolerance) {
maxFragLookUpTolerance = 0;
}
// Prefer the next fragment if it's within tolerance
if (fragNext && !fragment_finders_fragmentWithinToleranceTest(bufferEnd, maxFragLookUpTolerance, fragNext)) {
foundFrag = fragNext;
} else {
foundFrag = binary_search.search(fragments, fragment_finders_fragmentWithinToleranceTest.bind(null, bufferEnd, maxFragLookUpTolerance));
}
}
return foundFrag;
}
/**
* The test function used by the findFragmentBySn's BinarySearch to look for the best match to the current buffer conditions.
* @param {*} candidate - The fragment to test
* @param {number} [bufferEnd = 0] - The end of the current buffered range the playhead is currently within
* @param {number} [maxFragLookUpTolerance = 0] - The amount of time that a fragment's start can be within in order to be considered contiguous
* @returns {number} - 0 if it matches, 1 if too low, -1 if too high
*/
function fragment_finders_fragmentWithinToleranceTest() {
var bufferEnd = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 0;
var maxFragLookUpTolerance = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
var candidate = arguments[2];
// offset should be within fragment boundary - config.maxFragLookUpTolerance
// this is to cope with situations like
// bufferEnd = 9.991
// frag[Ø] : [0,10]
// frag[1] : [10,20]
// bufferEnd is within frag[0] range ... although what we are expecting is to return frag[1] here
// frag start frag start+duration
// |-----------------------------|
// <---> <--->
// ...--------><-----------------------------><---------....
// previous frag matching fragment next frag
// return -1 return 0 return 1
// logger.log(`level/sn/start/end/bufEnd:${level}/${candidate.sn}/${candidate.start}/${(candidate.start+candidate.duration)}/${bufferEnd}`);
// Set the lookup tolerance to be small enough to detect the current segment - ensures we don't skip over very small segments
var candidateLookupTolerance = Math.min(maxFragLookUpTolerance, candidate.duration + (candidate.deltaPTS ? candidate.deltaPTS : 0));
if (candidate.start + candidate.duration - candidateLookupTolerance <= bufferEnd) {
return 1;
} else if (candidate.start - candidateLookupTolerance > bufferEnd && candidate.start) {
// if maxFragLookUpTolerance will have negative value then don't return -1 for first element
return -1;
}
return 0;
}
// CONCATENATED MODULE: ./src/controller/stream-controller.js
var stream_controller__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; ...
function stream_controller__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function stream_controller__possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call :...
function stream_controller__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 = Ob...
/*
* Stream Controller
*/
var State = {
STOPPED: 'STOPPED',
IDLE: 'IDLE',
KEY_LOADING: 'KEY_LOADING',
FRAG_LOADING: 'FRAG_LOADING',
FRAG_LOADING_WAITING_RETRY: 'FRAG_LOADING_WAITING_RETRY',
WAITING_LEVEL: 'WAITING_LEVEL',
PARSING: 'PARSING',
PARSED: 'PARSED',
BUFFER_FLUSHING: 'BUFFER_FLUSHING',
ENDED: 'ENDED',
ERROR: 'ERROR'
};
var stream_controller_StreamController = function (_TaskLoop) {
stream_controller__inherits(StreamController, _TaskLoop);
function StreamController(hls, fragmentTracker) {
stream_controller__classCallCheck(this, StreamController);
var _this = stream_controller__possibleConstructorReturn(this, _TaskLoop.call(this, hls, events["a" /* default */].MEDIA_ATTACHED, events["a" /* default */].MEDIA_DETACHING, events["a" /* default */].MANIFEST_LOADING, events["a" /* default */].MA...
_this.fragmentTracker = fragmentTracker;
_this.config = hls.config;
_this.audioCodecSwap = false;
_this._state = State.STOPPED;
_this.stallReported = false;
return _this;
}
StreamController.prototype.onHandlerDestroying = function onHandlerDestroying() {
this.stopLoad();
_TaskLoop.prototype.onHandlerDestroying.call(this);
};
StreamController.prototype.onHandlerDestroyed = function onHandlerDestroyed() {
this.state = State.STOPPED;
this.fragmentTracker = null;
_TaskLoop.prototype.onHandlerDestroyed.call(this);
};
StreamController.prototype.startLoad = function startLoad(startPosition) {
if (this.levels) {
var lastCurrentTime = this.lastCurrentTime,
hls = this.hls;
this.stopLoad();
this.setInterval(100);
this.level = -1;
this.fragLoadError = 0;
if (!this.startFragRequested) {
// determine load level
var startLevel = hls.startLevel;
if (startLevel === -1) {
// -1 : guess start Level by doing a bitrate test by loading first fragment of lowest quality level
startLevel = 0;
this.bitrateTest = true;
}
// set new level to playlist loader : this will trigger start level load
// hls.nextLoadLevel remains until it is set to a new value or until a new frag is successfully loaded
this.level = hls.nextLoadLevel = startLevel;
this.loadedmetadata = false;
}
// if startPosition undefined but lastCurrentTime set, set startPosition to last currentTime
if (lastCurrentTime > 0 && startPosition === -1) {
logger["b" /* logger */].log('override startPosition with lastCurrentTime @' + lastCurrentTime.toFixed(3));
startPosition = lastCurrentTime;
}
this.state = State.IDLE;
this.nextLoadPosition = this.startPosition = this.lastCurrentTime = startPosition;
this.tick();
} else {
this.forceStartLoad = true;
this.state = State.STOPPED;
}
};
StreamController.prototype.stopLoad = function stopLoad() {
var frag = this.fragCurrent;
if (frag) {
if (frag.loader) {
frag.loader.abort();
}
this.fragmentTracker.removeFragment(frag);
this.fragCurrent = null;
}
this.fragPrevious = null;
if (this.demuxer) {
this.demuxer.destroy();
this.demuxer = null;
}
this.clearInterval();
this.state = State.STOPPED;
this.forceStartLoad = false;
};
StreamController.prototype.doTick = function doTick() {
switch (this.state) {
case State.BUFFER_FLUSHING:
// in buffer flushing state, reset fragLoadError counter
this.fragLoadError = 0;
break;
case State.IDLE:
this._doTickIdle();
break;
case State.WAITING_LEVEL:
var level = this.levels[this.level];
// check if playlist is already loaded
if (level && level.details) {
this.state = State.IDLE;
}
break;
case State.FRAG_LOADING_WAITING_RETRY:
var now = window.performance.now();
var retryDate = this.retryDate;
// if current time is gt than retryDate, or if media seeking let's switch to IDLE state to retry loading
if (!retryDate || now >= retryDate || this.media && this.media.seeking) {
logger["b" /* logger */].log('mediaController: retryDate reached, switch back to IDLE state');
this.state = State.IDLE;
}
break;
case State.ERROR:
case State.STOPPED:
case State.FRAG_LOADING:
case State.PARSING:
case State.PARSED:
case State.ENDED:
break;
default:
break;
}
// check buffer
this._checkBuffer();
// check/update current fragment
this._checkFragmentChanged();
};
// Ironically the "idle" state is the on we do the most logic in it seems ....
// NOTE: Maybe we could rather schedule a check for buffer length after half of the currently
// played segment, or on pause/play/seek instead of naively checking every 100ms?
StreamController.prototype._doTickIdle = function _doTickIdle() {
var hls = this.hls,
config = hls.config,
media = this.media;
// if start level not parsed yet OR
// if video not attached AND start fragment already requested OR start frag prefetch disable
// exit loop, as we either need more info (level not parsed) or we need media to be attached to load new fragment
if (this.levelLastLoaded === undefined || !media && (this.startFragRequested || !config.startFragPrefetch)) {
return;
}
// if we have not yet loaded any fragment, start loading from start position
var pos = void 0;
if (this.loadedmetadata) {
pos = media.currentTime;
} else {
pos = this.nextLoadPosition;
}
// determine next load level
var level = hls.nextLoadLevel,
levelInfo = this.levels[level];
if (!levelInfo) {
return;
}
var levelBitrate = levelInfo.bitrate,
maxBufLen = void 0;
// compute max Buffer Length that we could get from this load level, based on level bitrate. don't buffer more than 60 MB and more than 30s
if (levelBitrate) {
maxBufLen = Math.max(8 * config.maxBufferSize / levelBitrate, config.maxBufferLength);
} else {
maxBufLen = config.maxBufferLength;
}
maxBufLen = Math.min(maxBufLen, config.maxMaxBufferLength);
// determine next candidate fragment to be loaded, based on current position and end of buffer position
// ensure up to `config.maxMaxBufferLength` of buffer upfront
var bufferInfo = BufferHelper.bufferInfo(this.mediaBuffer ? this.mediaBuffer : media, pos, config.maxBufferHole),
bufferLen = bufferInfo.len;
// Stay idle if we are still with buffer margins
if (bufferLen >= maxBufLen) {
return;
}
// if buffer length is less than maxBufLen try to load a new fragment ...
logger["b" /* logger */].trace('buffer length of ' + bufferLen.toFixed(3) + ' is below max of ' + maxBufLen.toFixed(3) + '. checking for more payload ...');
// set next load level : this will trigger a playlist load if needed
this.level = hls.nextLoadLevel = level;
var levelDetails = levelInfo.details;
// if level info not retrieved yet, switch state and wait for level retrieval
// if live playlist, ensure that new playlist has been refreshed to avoid loading/try to load
// a useless and outdated fragment (that might even introduce load error if it is already out of the live playlist)
if (!levelDetails || levelDetails.live && this.levelLastLoaded !== level) {
this.state = State.WAITING_LEVEL;
return;
}
// we just got done loading the final fragment and there is no other buffered range after ...
// rationale is that in case there are any buffered ranges after, it means that there are unbuffered portion in between
// so we should not switch to ENDED in that case, to be able to buffer them
// dont switch to ENDED if we need to backtrack last fragment
var fragPrevious = this.fragPrevious;
if (!levelDetails.live && fragPrevious && !fragPrevious.backtracked && fragPrevious.sn === levelDetails.endSN && !bufferInfo.nextStart) {
// fragPrevious is last fragment. retrieve level duration using last frag start offset + duration
// real duration might be lower than initial duration if there are drifts between real frag duration and playlist signaling
var duration = Math.min(media.duration, fragPrevious.start + fragPrevious.duration);
// if everything (almost) til the end is buffered, let's signal eos
// we don't compare exactly media.duration === bufferInfo.end as there could be some subtle media duration difference (audio/video offsets...)
// tolerate up to one frag duration to cope with these cases.
// also cope with almost zero last frag duration (max last frag duration with 200ms) refer to https://github.com/video-dev/hls.js/pull/657
if (duration - Math.max(bufferInfo.end, fragPrevious.start) <= Math.max(0.2, fragPrevious.duration)) {
// Finalize the media stream
var data = {};
if (this.altAudio) {
data.type = 'video';
}
this.hls.trigger(events["a" /* default */].BUFFER_EOS, data);
this.state = State.ENDED;
return;
}
}
// if we have the levelDetails for the selected variant, lets continue enrichen our stream (load keys/fragments or trigger EOS, etc..)
this._fetchPayloadOrEos(pos, bufferInfo, levelDetails);
};
StreamController.prototype._fetchPayloadOrEos = function _fetchPayloadOrEos(pos, bufferInfo, levelDetails) {
var fragPrevious = this.fragPrevious,
level = this.level,
fragments = levelDetails.fragments,
fragLen = fragments.length;
// empty playlist
if (fragLen === 0) {
return;
}
// find fragment index, contiguous with end of buffer position
var start = fragments[0].start,
end = fragments[fragLen - 1].start + fragments[fragLen - 1].duration,
bufferEnd = bufferInfo.end,
frag = void 0;
if (levelDetails.initSegment && !levelDetails.initSegment.data) {
frag = levelDetails.initSegment;
} else {
// in case of live playlist we need to ensure that requested position is not located before playlist start
if (levelDetails.live) {
var initialLiveManifestSize = this.config.initialLiveManifestSize;
if (fragLen < initialLiveManifestSize) {
logger["b" /* logger */].warn('Can not start playback of a level, reason: not enough fragments ' + fragLen + ' < ' + initialLiveManifestSize);
return;
}
frag = this._ensureFragmentAtLivePoint(levelDetails, bufferEnd, start, end, fragPrevious, fragments, fragLen);
// if it explicitely returns null don't load any fragment and exit function now
if (frag === null) {
return;
}
} else {
// VoD playlist: if bufferEnd before start of playlist, load first fragment
if (bufferEnd < start) {
frag = fragments[0];
}
}
}
if (!frag) {
frag = this._findFragment(start, fragPrevious, fragLen, fragments, bufferEnd, end, levelDetails);
}
if (frag) {
if (frag.encrypted) {
logger["b" /* logger */].log('Loading key for ' + frag.sn + ' of [' + levelDetails.startSN + ' ,' + levelDetails.endSN + '],level ' + level);
this._loadKey(frag);
} else {
logger["b" /* logger */].log('Loading ' + frag.sn + ' of [' + levelDetails.startSN + ' ,' + levelDetails.endSN + '],level ' + level + ', currentTime:' + pos.toFixed(3) + ',bufferEnd:' + bufferEnd.toFixed(3));
this._loadFragment(frag);
}
}
};
StreamController.prototype._ensureFragmentAtLivePoint = function _ensureFragmentAtLivePoint(levelDetails, bufferEnd, start, end, fragPrevious, fragments, fragLen) {
var config = this.hls.config,
media = this.media;
var frag = void 0;
// check if requested position is within seekable boundaries :
// logger.log(`start/pos/bufEnd/seeking:${start.toFixed(3)}/${pos.toFixed(3)}/${bufferEnd.toFixed(3)}/${this.media.seeking}`);
var maxLatency = config.liveMaxLatencyDuration !== undefined ? config.liveMaxLatencyDuration : config.liveMaxLatencyDurationCount * levelDetails.targetduration;
if (bufferEnd < Math.max(start - config.maxFragLookUpTolerance, end - maxLatency)) {
var liveSyncPosition = this.liveSyncPosition = this.computeLivePosition(start, levelDetails);
logger["b" /* logger */].log('buffer end: ' + bufferEnd.toFixed(3) + ' is located too far from the end of live sliding playlist, reset currentTime to : ' + liveSyncPosition.toFixed(3));
bufferEnd = liveSyncPosition;
if (media && media.readyState && media.duration > liveSyncPosition) {
media.currentTime = liveSyncPosition;
}
this.nextLoadPosition = liveSyncPosition;
}
// if end of buffer greater than live edge, don't load any fragment
// this could happen if live playlist intermittently slides in the past.
// level 1 loaded [182580161,182580167]
// level 1 loaded [182580162,182580169]
// Loading 182580168 of [182580162 ,182580169],level 1 ..
// Loading 182580169 of [182580162 ,182580169],level 1 ..
// level 1 loaded [182580162,182580168] <============= here we should have bufferEnd > end. in that case break to avoid reloading 182580168
// level 1 loaded [182580164,182580171]
//
// don't return null in case media not loaded yet (readystate === 0)
if (levelDetails.PTSKnown && bufferEnd > end && media && media.readyState) {
return null;
}
if (this.startFragRequested && !levelDetails.PTSKnown) {
/* we are switching level on live playlist, but we don't have any PTS info for that quality level ...
try to load frag matching with next SN.
even if SN are not synchronized between playlists, loading this frag will help us
compute playlist sliding and find the right one after in case it was not the right consecutive one */
if (fragPrevious) {
if (!levelDetails.programDateTime) {
// Uses buffer and sequence number to calculate switch segment (required if using EXT-X-DISCONTINUITY-SEQUENCE)
var targetSN = fragPrevious.sn + 1;
if (targetSN >= levelDetails.startSN && targetSN <= levelDetails.endSN) {
var fragNext = fragments[targetSN - levelDetails.startSN];
if (fragPrevious.cc === fragNext.cc) {
frag = fragNext;
logger["b" /* logger */].log('live playlist, switching playlist, load frag with next SN: ' + frag.sn);
}
}
// next frag SN not available (or not with same continuity counter)
// look for a frag sharing the same CC
if (!frag) {
frag = binary_search.search(fragments, function (frag) {
return fragPrevious.cc - frag.cc;
});
if (frag) {
logger["b" /* logger */].log('live playlist, switching playlist, load frag with same CC: ' + frag.sn);
}
}
} else {
// Relies on PDT in order to switch bitrates (Support EXT-X-DISCONTINUITY without EXT-X-DISCONTINUITY-SEQUENCE)
frag = findFragmentByPDT(fragments, fragPrevious.endPdt + 1);
}
}
if (!frag) {
/* we have no idea about which fragment should be loaded.
so let's load mid fragment. it will help computing playlist sliding and find the right one
*/
frag = fragments[Math.min(fragLen - 1, Math.round(fragLen / 2))];
logger["b" /* logger */].log('live playlist, switching playlist, unknown, load middle frag : ' + frag.sn);
}
}
return frag;
};
StreamController.prototype._findFragment = function _findFragment(start, fragPrevious, fragLen, fragments, bufferEnd, end, levelDetails) {
var config = this.hls.config;
var fragBySN = function fragBySN() {
return findFragmentBySN(fragPrevious, fragments, bufferEnd, end, config.maxFragLookUpTolerance);
};
var frag = void 0;
var foundFrag = void 0;
if (bufferEnd < end) {
if (!levelDetails.programDateTime) {
// Uses buffer and sequence number to calculate switch segment (required if using EXT-X-DISCONTINUITY-SEQUENCE)
foundFrag = findFragmentBySN(fragPrevious, fragments, bufferEnd, end, config.maxFragLookUpTolerance);
} else {
// Relies on PDT in order to switch bitrates (Support EXT-X-DISCONTINUITY without EXT-X-DISCONTINUITY-SEQUENCE)
foundFrag = findFragmentByPDT(fragments, calculateNextPDT(start, bufferEnd, levelDetails));
if (!foundFrag || fragment_finders_fragmentWithinToleranceTest(bufferEnd, config.maxFragLookUpTolerance, foundFrag)) {
// Fall back to SN order if finding by PDT returns a frag which won't fit within the stream
// fragmentWithToleranceTest returns 0 if the frag is within tolerance; 1 or -1 otherwise
logger["b" /* logger */].warn('Frag found by PDT search did not fit within tolerance; falling back to finding by SN');
foundFrag = fragBySN();
}
}
} else {
// reach end of playlist
foundFrag = fragments[fragLen - 1];
}
if (foundFrag) {
frag = foundFrag;
var curSNIdx = frag.sn - levelDetails.startSN;
var sameLevel = fragPrevious && frag.level === fragPrevious.level;
var prevFrag = fragments[curSNIdx - 1];
var nextFrag = fragments[curSNIdx + 1];
// logger.log('find SN matching with pos:' + bufferEnd + ':' + frag.sn);
if (fragPrevious && frag.sn === fragPrevious.sn) {
if (sameLevel && !frag.backtracked) {
if (frag.sn < levelDetails.endSN) {
var deltaPTS = fragPrevious.deltaPTS;
// if there is a significant delta between audio and video, larger than max allowed hole,
// and if previous remuxed fragment did not start with a keyframe. (fragPrevious.dropped)
// let's try to load previous fragment again to get last keyframe
// then we will reload again current fragment (that way we should be able to fill the buffer hole ...)
if (deltaPTS && deltaPTS > config.maxBufferHole && fragPrevious.dropped && curSNIdx) {
frag = prevFrag;
logger["b" /* logger */].warn('SN just loaded, with large PTS gap between audio and video, maybe frag is not starting with a keyframe ? load previous one to try to overcome this');
} else {
frag = nextFrag;
logger["b" /* logger */].log('SN just loaded, load next one: ' + frag.sn);
}
} else {
frag = null;
}
} else if (frag.backtracked) {
// Only backtrack a max of 1 consecutive fragment to prevent sliding back too far when little or no frags start with keyframes
if (nextFrag && nextFrag.backtracked) {
logger["b" /* logger */].warn('Already backtracked from fragment ' + nextFrag.sn + ', will not backtrack to fragment ' + frag.sn + '. Loading fragment ' + nextFrag.sn);
frag = nextFrag;
} else {
// If a fragment has dropped frames and it's in a same level/sequence, load the previous fragment to try and find the keyframe
// Reset the dropped count now since it won't be reset until we parse the fragment again, which prevents infinite backtracking on the same segment
logger["b" /* logger */].warn('Loaded fragment with dropped frames, backtracking 1 segment to find a keyframe');
frag.dropped = 0;
if (prevFrag) {
frag = prevFrag;
frag.backtracked = true;
} else if (curSNIdx) {
// can't backtrack on very first fragment
frag = null;
}
}
}
}
}
return frag;
};
StreamController.prototype._loadKey = function _loadKey(frag) {
this.state = State.KEY_LOADING;
this.hls.trigger(events["a" /* default */].KEY_LOADING, { frag: frag });
};
StreamController.prototype._loadFragment = function _loadFragment(frag) {
// Check if fragment is not loaded
var fragState = this.fragmentTracker.getState(frag);
this.fragCurrent = frag;
this.startFragRequested = true;
// Don't update nextLoadPosition for fragments which are not buffered
if (!isNaN(frag.sn) && !frag.bitrateTest) {
this.nextLoadPosition = frag.start + frag.duration;
}
// Allow backtracked fragments to load
if (frag.backtracked || fragState === FragmentState.NOT_LOADED || fragState === FragmentState.PARTIAL) {
frag.autoLevel = this.hls.autoLevelEnabled;
frag.bitrateTest = this.bitrateTest;
this.hls.trigger(events["a" /* default */].FRAG_LOADING, { frag: frag });
// lazy demuxer init, as this could take some time ... do it during frag loading
if (!this.demuxer) {
this.demuxer = new demux_demuxer(this.hls, 'main');
}
this.state = State.FRAG_LOADING;
} else if (fragState === FragmentState.APPENDING) {
// Lower the buffer size and try again
if (this._reduceMaxBufferLength(frag.duration)) {
this.fragmentTracker.removeFragment(frag);
}
}
};
StreamController.prototype.getBufferedFrag = function getBufferedFrag(position) {
return this.fragmentTracker.getBufferedFrag(position, playlist_loader.LevelType.MAIN);
};
StreamController.prototype.followingBufferedFrag = function followingBufferedFrag(frag) {
if (frag) {
// try to get range of next fragment (500ms after this range)
return this.getBufferedFrag(frag.endPTS + 0.5);
}
return null;
};
StreamController.prototype._checkFragmentChanged = function _checkFragmentChanged() {
var fragPlayingCurrent = void 0,
currentTime = void 0,
video = this.media;
if (video && video.readyState && video.seeking === false) {
currentTime = video.currentTime;
/* if video element is in seeked state, currentTime can only increase.
(assuming that playback rate is positive ...)
As sometimes currentTime jumps back to zero after a
media decode error, check this, to avoid seeking back to
wrong position after a media decode error
*/
if (currentTime > this.lastCurrentTime) {
this.lastCurrentTime = currentTime;
}
if (BufferHelper.isBuffered(video, currentTime)) {
fragPlayingCurrent = this.getBufferedFrag(currentTime);
} else if (BufferHelper.isBuffered(video, currentTime + 0.1)) {
/* ensure that FRAG_CHANGED event is triggered at startup,
when first video frame is displayed and playback is paused.
add a tolerance of 100ms, in case current position is not buffered,
check if current pos+100ms is buffered and use that buffer range
for FRAG_CHANGED event reporting */
fragPlayingCurrent = this.getBufferedFrag(currentTime + 0.1);
}
if (fragPlayingCurrent) {
var fragPlaying = fragPlayingCurrent;
if (fragPlaying !== this.fragPlaying) {
this.hls.trigger(events["a" /* default */].FRAG_CHANGED, { frag: fragPlaying });
var fragPlayingLevel = fragPlaying.level;
if (!this.fragPlaying || this.fragPlaying.level !== fragPlayingLevel) {
this.hls.trigger(events["a" /* default */].LEVEL_SWITCHED, { level: fragPlayingLevel });
}
this.fragPlaying = fragPlaying;
}
}
}
};
/*
on immediate level switch :
- pause playback if playing
- cancel any pending load request
- and trigger a buffer flush
*/
StreamController.prototype.immediateLevelSwitch = function immediateLevelSwitch() {
logger["b" /* logger */].log('immediateLevelSwitch');
if (!this.immediateSwitch) {
this.immediateSwitch = true;
var media = this.media,
previouslyPaused = void 0;
if (media) {
previouslyPaused = media.paused;
media.pause();
} else {
// don't restart playback after instant level switch in case media not attached
previouslyPaused = true;
}
this.previouslyPaused = previouslyPaused;
}
var fragCurrent = this.fragCurrent;
if (fragCurrent && fragCurrent.loader) {
fragCurrent.loader.abort();
}
this.fragCurrent = null;
// flush everything
this.flushMainBuffer(0, Number.POSITIVE_INFINITY);
};
/**
* on immediate level switch end, after new fragment has been buffered:
* - nudge video decoder by slightly adjusting video currentTime (if currentTime buffered)
* - resume the playback if needed
*/
StreamController.prototype.immediateLevelSwitchEnd = function immediateLevelSwitchEnd() {
var media = this.media;
if (media && media.buffered.length) {
this.immediateSwitch = false;
if (BufferHelper.isBuffered(media, media.currentTime)) {
// only nudge if currentTime is buffered
media.currentTime -= 0.0001;
}
if (!this.previouslyPaused) {
media.play();
}
}
};
/**
* try to switch ASAP without breaking video playback:
* in order to ensure smooth but quick level switching,
* we need to find the next flushable buffer range
* we should take into account new segment fetch time
*/
StreamController.prototype.nextLevelSwitch = function nextLevelSwitch() {
var media = this.media;
// ensure that media is defined and that metadata are available (to retrieve currentTime)
if (media && media.readyState) {
var fetchdelay = void 0,
fragPlayingCurrent = void 0,
nextBufferedFrag = void 0;
fragPlayingCurrent = this.getBufferedFrag(media.currentTime);
if (fragPlayingCurrent && fragPlayingCurrent.startPTS > 1) {
// flush buffer preceding current fragment (flush until current fragment start offset)
// minus 1s to avoid video freezing, that could happen if we flush keyframe of current video ...
this.flushMainBuffer(0, fragPlayingCurrent.startPTS - 1);
}
if (!media.paused) {
// add a safety delay of 1s
var nextLevelId = this.hls.nextLoadLevel,
nextLevel = this.levels[nextLevelId],
fragLastKbps = this.fragLastKbps;
if (fragLastKbps && this.fragCurrent) {
fetchdelay = this.fragCurrent.duration * nextLevel.bitrate / (1000 * fragLastKbps) + 1;
} else {
fetchdelay = 0;
}
} else {
fetchdelay = 0;
}
// logger.log('fetchdelay:'+fetchdelay);
// find buffer range that will be reached once new fragment will be fetched
nextBufferedFrag = this.getBufferedFrag(media.currentTime + fetchdelay);
if (nextBufferedFrag) {
// we can flush buffer range following this one without stalling playback
nextBufferedFrag = this.followingBufferedFrag(nextBufferedFrag);
if (nextBufferedFrag) {
// if we are here, we can also cancel any loading/demuxing in progress, as they are useless
var fragCurrent = this.fragCurrent;
if (fragCurrent && fragCurrent.loader) {
fragCurrent.loader.abort();
}
this.fragCurrent = null;
// start flush position is the start PTS of next buffered frag.
// we use frag.naxStartPTS which is max(audio startPTS, video startPTS).
// in case there is a small PTS Delta between audio and video, using maxStartPTS avoids flushing last samples from current fragment
this.flushMainBuffer(nextBufferedFrag.maxStartPTS, Number.POSITIVE_INFINITY);
}
}
}
};
StreamController.prototype.flushMainBuffer = function flushMainBuffer(startOffset, endOffset) {
this.state = State.BUFFER_FLUSHING;
var flushScope = { startOffset: startOffset, endOffset: endOffset };
// if alternate audio tracks are used, only flush video, otherwise flush everything
if (this.altAudio) {
flushScope.type = 'video';
}
this.hls.trigger(events["a" /* default */].BUFFER_FLUSHING, flushScope);
};
StreamController.prototype.onMediaAttached = function onMediaAttached(data) {
var media = this.media = this.mediaBuffer = data.media;
this.onvseeking = this.onMediaSeeking.bind(this);
this.onvseeked = this.onMediaSeeked.bind(this);
this.onvended = this.onMediaEnded.bind(this);
media.addEventListener('seeking', this.onvseeking);
media.addEventListener('seeked', this.onvseeked);
media.addEventListener('ended', this.onvended);
var config = this.config;
if (this.levels && config.autoStartLoad) {
this.hls.startLoad(config.startPosition);
}
};
StreamController.prototype.onMediaDetaching = function onMediaDetaching() {
var media = this.media;
if (media && media.ended) {
logger["b" /* logger */].log('MSE detaching and video ended, reset startPosition');
this.startPosition = this.lastCurrentTime = 0;
}
// reset fragment backtracked flag
var levels = this.levels;
if (levels) {
levels.forEach(function (level) {
if (level.details) {
level.details.fragments.forEach(function (fragment) {
fragment.backtracked = undefined;
});
}
});
}
// remove video listeners
if (media) {
media.removeEventListener('seeking', this.onvseeking);
media.removeEventListener('seeked', this.onvseeked);
media.removeEventListener('ended', this.onvended);
this.onvseeking = this.onvseeked = this.onvended = null;
}
this.media = this.mediaBuffer = null;
this.loadedmetadata = false;
this.stopLoad();
};
StreamController.prototype.onMediaSeeking = function onMediaSeeking() {
var media = this.media,
currentTime = media ? media.currentTime : undefined,
config = this.config;
if (!isNaN(currentTime)) {
logger["b" /* logger */].log('media seeking to ' + currentTime.toFixed(3));
}
var mediaBuffer = this.mediaBuffer ? this.mediaBuffer : media;
var bufferInfo = BufferHelper.bufferInfo(mediaBuffer, currentTime, this.config.maxBufferHole);
if (this.state === State.FRAG_LOADING) {
var fragCurrent = this.fragCurrent;
// check if we are seeking to a unbuffered area AND if frag loading is in progress
if (bufferInfo.len === 0 && fragCurrent) {
var tolerance = config.maxFragLookUpTolerance,
fragStartOffset = fragCurrent.start - tolerance,
fragEndOffset = fragCurrent.start + fragCurrent.duration + tolerance;
// check if we seek position will be out of currently loaded frag range : if out cancel frag load, if in, don't do anything
if (currentTime < fragStartOffset || currentTime > fragEndOffset) {
if (fragCurrent.loader) {
logger["b" /* logger */].log('seeking outside of buffer while fragment load in progress, cancel fragment load');
fragCurrent.loader.abort();
}
this.fragCurrent = null;
this.fragPrevious = null;
// switch to IDLE state to load new fragment
this.state = State.IDLE;
} else {
logger["b" /* logger */].log('seeking outside of buffer but within currently loaded fragment range');
}
}
} else if (this.state === State.ENDED) {
// if seeking to unbuffered area, clean up fragPrevious
if (bufferInfo.len === 0) {
this.fragPrevious = 0;
}
// switch to IDLE state to check for potential new fragment
this.state = State.IDLE;
}
if (media) {
this.lastCurrentTime = currentTime;
}
// in case seeking occurs although no media buffered, adjust startPosition and nextLoadPosition to seek target
if (!this.loadedmetadata) {
this.nextLoadPosition = this.startPosition = currentTime;
}
// tick to speed up processing
this.tick();
};
StreamController.prototype.onMediaSeeked = function onMediaSeeked() {
var media = this.media,
currentTime = media ? media.currentTime : undefined;
if (!isNaN(currentTime)) {
logger["b" /* logger */].log('media seeked to ' + currentTime.toFixed(3));
}
// tick to speed up FRAGMENT_PLAYING triggering
this.tick();
};
StreamController.prototype.onMediaEnded = function onMediaEnded() {
logger["b" /* logger */].log('media ended');
// reset startPosition and lastCurrentTime to restart playback @ stream beginning
this.startPosition = this.lastCurrentTime = 0;
};
StreamController.prototype.onManifestLoading = function onManifestLoading() {
// reset buffer on manifest loading
logger["b" /* logger */].log('trigger BUFFER_RESET');
this.hls.trigger(events["a" /* default */].BUFFER_RESET);
this.fragmentTracker.removeAllFragments();
this.stalled = false;
this.startPosition = this.lastCurrentTime = 0;
};
StreamController.prototype.onManifestParsed = function onManifestParsed(data) {
var aac = false,
heaac = false,
codec = void 0;
data.levels.forEach(function (level) {
// detect if we have different kind of audio codecs used amongst playlists
codec = level.audioCodec;
if (codec) {
if (codec.indexOf('mp4a.40.2') !== -1) {
aac = true;
}
if (codec.indexOf('mp4a.40.5') !== -1) {
heaac = true;
}
}
});
this.audioCodecSwitch = aac && heaac;
if (this.audioCodecSwitch) {
logger["b" /* logger */].log('both AAC/HE-AAC audio found in levels; declaring level codec as HE-AAC');
}
this.levels = data.levels;
this.startFragRequested = false;
var config = this.config;
if (config.autoStartLoad || this.forceStartLoad) {
this.hls.startLoad(config.startPosition);
}
};
StreamController.prototype.onLevelLoaded = function onLevelLoaded(data) {
var newDetails = data.details;
var newLevelId = data.level;
var lastLevel = this.levels[this.levelLastLoaded];
var curLevel = this.levels[newLevelId];
var duration = newDetails.totalduration;
var sliding = 0;
logger["b" /* logger */].log('level ' + newLevelId + ' loaded [' + newDetails.startSN + ',' + newDetails.endSN + '],duration:' + duration);
if (newDetails.live) {
var curDetails = curLevel.details;
if (curDetails && newDetails.fragments.length > 0) {
// we already have details for that level, merge them
mergeDetails(curDetails, newDetails);
sliding = newDetails.fragments[0].start;
this.liveSyncPosition = this.computeLivePosition(sliding, curDetails);
if (newDetails.PTSKnown && !isNaN(sliding)) {
logger["b" /* logger */].log('live playlist sliding:' + sliding.toFixed(3));
} else {
logger["b" /* logger */].log('live playlist - outdated PTS, unknown sliding');
alignDiscontinuities(this.fragPrevious, lastLevel, newDetails);
}
} else {
logger["b" /* logger */].log('live playlist - first load, unknown sliding');
newDetails.PTSKnown = false;
alignDiscontinuities(this.fragPrevious, lastLevel, newDetails);
}
} else {
newDetails.PTSKnown = false;
}
// override level info
curLevel.details = newDetails;
this.levelLastLoaded = newLevelId;
this.hls.trigger(events["a" /* default */].LEVEL_UPDATED, { details: newDetails, level: newLevelId });
if (this.startFragRequested === false) {
// compute start position if set to -1. use it straight away if value is defined
if (this.startPosition === -1 || this.lastCurrentTime === -1) {
// first, check if start time offset has been set in playlist, if yes, use this value
var startTimeOffset = newDetails.startTimeOffset;
if (!isNaN(startTimeOffset)) {
if (startTimeOffset < 0) {
logger["b" /* logger */].log('negative start time offset ' + startTimeOffset + ', count from end of last fragment');
startTimeOffset = sliding + duration + startTimeOffset;
}
logger["b" /* logger */].log('start time offset found in playlist, adjust startPosition to ' + startTimeOffset);
this.startPosition = startTimeOffset;
} else {
// if live playlist, set start position to be fragment N-this.config.liveSyncDurationCount (usually 3)
if (newDetails.live) {
this.startPosition = this.computeLivePosition(sliding, newDetails);
logger["b" /* logger */].log('configure startPosition to ' + this.startPosition);
} else {
this.startPosition = 0;
}
}
this.lastCurrentTime = this.startPosition;
}
this.nextLoadPosition = this.startPosition;
}
// only switch batck to IDLE state if we were waiting for level to start downloading a new fragment
if (this.state === State.WAITING_LEVEL) {
this.state = State.IDLE;
}
// trigger handler right now
this.tick();
};
StreamController.prototype.onKeyLoaded = function onKeyLoaded() {
if (this.state === State.KEY_LOADING) {
this.state = State.IDLE;
this.tick();
}
};
StreamController.prototype.onFragLoaded = function onFragLoaded(data) {
var fragCurrent = this.fragCurrent,
fragLoaded = data.frag;
if (this.state === State.FRAG_LOADING && fragCurrent && fragLoaded.type === 'main' && fragLoaded.level === fragCurrent.level && fragLoaded.sn === fragCurrent.sn) {
var stats = data.stats;
var currentLevel = this.levels[fragCurrent.level];
var details = currentLevel.details;
logger["b" /* logger */].log('Loaded ' + fragCurrent.sn + ' of [' + details.startSN + ' ,' + details.endSN + '],level ' + fragCurrent.level);
// reset frag bitrate test in any case after frag loaded event
this.bitrateTest = false;
this.stats = stats;
// if this frag was loaded to perform a bitrate test AND if hls.nextLoadLevel is greater than 0
// then this means that we should be able to load a fragment at a higher quality level
if (fragLoaded.bitrateTest === true && this.hls.nextLoadLevel) {
// switch back to IDLE state ... we just loaded a fragment to determine adequate start bitrate and initialize autoswitch algo
this.state = State.IDLE;
this.startFragRequested = false;
stats.tparsed = stats.tbuffered = window.performance.now();
this.hls.trigger(events["a" /* default */].FRAG_BUFFERED, { stats: stats, frag: fragCurrent, id: 'main' });
this.tick();
} else if (fragLoaded.sn === 'initSegment') {
this.state = State.IDLE;
stats.tparsed = stats.tbuffered = window.performance.now();
details.initSegment.data = data.payload;
this.hls.trigger(events["a" /* default */].FRAG_BUFFERED, { stats: stats, frag: fragCurrent, id: 'main' });
this.tick();
} else {
this.state = State.PARSING;
// transmux the MPEG-TS data to ISO-BMFF segments
var duration = details.totalduration,
level = fragCurrent.level,
sn = fragCurrent.sn,
audioCodec = this.config.defaultAudioCodec || currentLevel.audioCodec;
if (this.audioCodecSwap) {
logger["b" /* logger */].log('swapping playlist audio codec');
if (audioCodec === undefined) {
audioCodec = this.lastAudioCodec;
}
if (audioCodec) {
if (audioCodec.indexOf('mp4a.40.5') !== -1) {
audioCodec = 'mp4a.40.2';
} else {
audioCodec = 'mp4a.40.5';
}
}
}
this.pendingBuffering = true;
this.appended = false;
logger["b" /* logger */].log('Parsing ' + sn + ' of [' + details.startSN + ' ,' + details.endSN + '],level ' + level + ', cc ' + fragCurrent.cc);
var demuxer = this.demuxer;
if (!demuxer) {
demuxer = this.demuxer = new demux_demuxer(this.hls, 'main');
}
// time Offset is accurate if level PTS is known, or if playlist is not sliding (not live) and if media is not seeking (this is to overcome potential timestamp drifts between playlists and fragments)
var media = this.media;
var mediaSeeking = media && media.seeking;
var accurateTimeOffset = !mediaSeeking && (details.PTSKnown || !details.live);
var initSegmentData = details.initSegment ? details.initSegment.data : [];
demuxer.push(data.payload, initSegmentData, audioCodec, currentLevel.videoCodec, fragCurrent, duration, accurateTimeOffset, undefined);
}
}
this.fragLoadError = 0;
};
StreamController.prototype.onFragParsingInitSegment = function onFragParsingInitSegment(data) {
var fragCurrent = this.fragCurrent;
var fragNew = data.frag;
if (fragCurrent && data.id === 'main' && fragNew.sn === fragCurrent.sn && fragNew.level === fragCurrent.level && this.state === State.PARSING) {
var tracks = data.tracks,
trackName = void 0,
track = void 0;
// if audio track is expected to come from audio stream controller, discard any coming from main
if (tracks.audio && this.altAudio) {
delete tracks.audio;
}
// include levelCodec in audio and video tracks
track = tracks.audio;
if (track) {
var audioCodec = this.levels[this.level].audioCodec,
ua = navigator.userAgent.toLowerCase();
if (audioCodec && this.audioCodecSwap) {
logger["b" /* logger */].log('swapping playlist audio codec');
if (audioCodec.indexOf('mp4a.40.5') !== -1) {
audioCodec = 'mp4a.40.2';
} else {
audioCodec = 'mp4a.40.5';
}
}
// in case AAC and HE-AAC audio codecs are signalled in manifest
// force HE-AAC , as it seems that most browsers prefers that way,
// except for mono streams OR on FF
// these conditions might need to be reviewed ...
if (this.audioCodecSwitch) {
// don't force HE-AAC if mono stream
if (track.metadata.channelCount !== 1 &&
// don't force HE-AAC if firefox
ua.indexOf('firefox') === -1) {
audioCodec = 'mp4a.40.5';
}
}
// HE-AAC is broken on Android, always signal audio codec as AAC even if variant manifest states otherwise
if (ua.indexOf('android') !== -1 && track.container !== 'audio/mpeg') {
// Exclude mpeg audio
audioCodec = 'mp4a.40.2';
logger["b" /* logger */].log('Android: force audio codec to ' + audioCodec);
}
track.levelCodec = audioCodec;
track.id = data.id;
}
track = tracks.video;
if (track) {
track.levelCodec = this.levels[this.level].videoCodec;
track.id = data.id;
}
this.hls.trigger(events["a" /* default */].BUFFER_CODECS, tracks);
// loop through tracks that are going to be provided to bufferController
for (trackName in tracks) {
track = tracks[trackName];
logger["b" /* logger */].log('main track:' + trackName + ',container:' + track.container + ',codecs[level/parsed]=[' + track.levelCodec + '/' + track.codec + ']');
var initSegment = track.initSegment;
if (initSegment) {
this.appended = true;
// arm pending Buffering flag before appending a segment
this.pendingBuffering = true;
this.hls.trigger(events["a" /* default */].BUFFER_APPENDING, { type: trackName, data: initSegment, parent: 'main', content: 'initSegment' });
}
}
// trigger handler right now
this.tick();
}
};
StreamController.prototype.onFragParsingData = function onFragParsingData(data) {
var _this2 = this;
var fragCurrent = this.fragCurrent;
var fragNew = data.frag;
if (fragCurrent && data.id === 'main' && fragNew.sn === fragCurrent.sn && fragNew.level === fragCurrent.level && !(data.type === 'audio' && this.altAudio) && // filter out main audio if audio track is loaded through audio stream controller
this.state === State.PARSING) {
var level = this.levels[this.level],
frag = fragCurrent;
if (isNaN(data.endPTS)) {
data.endPTS = data.startPTS + fragCurrent.duration;
data.endDTS = data.startDTS + fragCurrent.duration;
}
if (data.hasAudio === true) {
frag.addElementaryStream(loader_fragment.ElementaryStreamTypes.AUDIO);
}
if (data.hasVideo === true) {
frag.addElementaryStream(loader_fragment.ElementaryStreamTypes.VIDEO);
}
logger["b" /* logger */].log('Parsed ' + data.type + ',PTS:[' + data.startPTS.toFixed(3) + ',' + data.endPTS.toFixed(3) + '],DTS:[' + data.startDTS.toFixed(3) + '/' + data.endDTS.toFixed(3) + '],nb:' + data.nb + ',dropped:' + (data.dropped || 0...
// Detect gaps in a fragment and try to fix it by finding a keyframe in the previous fragment (see _findFragments)
if (data.type === 'video') {
frag.dropped = data.dropped;
if (frag.dropped) {
if (!frag.backtracked) {
var levelDetails = level.details;
if (levelDetails && frag.sn === levelDetails.startSN) {
logger["b" /* logger */].warn('missing video frame(s) on first frag, appending with gap', frag.sn);
} else {
logger["b" /* logger */].warn('missing video frame(s), backtracking fragment', frag.sn);
// Return back to the IDLE state without appending to buffer
// Causes findFragments to backtrack a segment and find the keyframe
// Audio fragments arriving before video sets the nextLoadPosition, causing _findFragments to skip the backtracked fragment
this.fragmentTracker.removeFragment(frag);
frag.backtracked = true;
this.nextLoadPosition = data.startPTS;
this.state = State.IDLE;
this.fragPrevious = frag;
this.tick();
return;
}
} else {
logger["b" /* logger */].warn('Already backtracked on this fragment, appending with the gap', frag.sn);
}
} else {
// Only reset the backtracked flag if we've loaded the frag without any dropped frames
frag.backtracked = false;
}
}
var drift = updateFragPTSDTS(level.details, frag, data.startPTS, data.endPTS, data.startDTS, data.endDTS),
hls = this.hls;
hls.trigger(events["a" /* default */].LEVEL_PTS_UPDATED, { details: level.details, level: this.level, drift: drift, type: data.type, start: data.startPTS, end: data.endPTS });
// has remuxer dropped video frames located before first keyframe ?
[data.data1, data.data2].forEach(function (buffer) {
// only append in PARSING state (rationale is that an appending error could happen synchronously on first segment appending)
// in that case it is useless to append following segments
if (buffer && buffer.length && _this2.state === State.PARSING) {
_this2.appended = true;
// arm pending Buffering flag before appending a segment
_this2.pendingBuffering = true;
hls.trigger(events["a" /* default */].BUFFER_APPENDING, { type: data.type, data: buffer, parent: 'main', content: 'data' });
}
});
// trigger handler right now
this.tick();
}
};
StreamController.prototype.onFragParsed = function onFragParsed(data) {
var fragCurrent = this.fragCurrent;
var fragNew = data.frag;
if (fragCurrent && data.id === 'main' && fragNew.sn === fragCurrent.sn && fragNew.level === fragCurrent.level && this.state === State.PARSING) {
this.stats.tparsed = window.performance.now();
this.state = State.PARSED;
this._checkAppendedParsed();
}
};
StreamController.prototype.onAudioTrackSwitching = function onAudioTrackSwitching(data) {
// if any URL found on new audio track, it is an alternate audio track
var altAudio = !!data.url,
trackId = data.id;
// if we switch on main audio, ensure that main fragment scheduling is synced with media.buffered
// don't do anything if we switch to alt audio: audio stream controller is handling it.
// we will just have to change buffer scheduling on audioTrackSwitched
if (!altAudio) {
if (this.mediaBuffer !== this.media) {
logger["b" /* logger */].log('switching on main audio, use media.buffered to schedule main fragment loading');
this.mediaBuffer = this.media;
var fragCurrent = this.fragCurrent;
// we need to refill audio buffer from main: cancel any frag loading to speed up audio switch
if (fragCurrent.loader) {
logger["b" /* logger */].log('switching to main audio track, cancel main fragment load');
fragCurrent.loader.abort();
}
this.fragCurrent = null;
this.fragPrevious = null;
// destroy demuxer to force init segment generation (following audio switch)
if (this.demuxer) {
this.demuxer.destroy();
this.demuxer = null;
}
// switch to IDLE state to load new fragment
this.state = State.IDLE;
}
var hls = this.hls;
// switching to main audio, flush all audio and trigger track switched
hls.trigger(events["a" /* default */].BUFFER_FLUSHING, { startOffset: 0, endOffset: Number.POSITIVE_INFINITY, type: 'audio' });
hls.trigger(events["a" /* default */].AUDIO_TRACK_SWITCHED, { id: trackId });
this.altAudio = false;
}
};
StreamController.prototype.onAudioTrackSwitched = function onAudioTrackSwitched(data) {
var trackId = data.id,
altAudio = !!this.hls.audioTracks[trackId].url;
if (altAudio) {
var videoBuffer = this.videoBuffer;
// if we switched on alternate audio, ensure that main fragment scheduling is synced with video sourcebuffer buffered
if (videoBuffer && this.mediaBuffer !== videoBuffer) {
logger["b" /* logger */].log('switching on alternate audio, use video.buffered to schedule main fragment loading');
this.mediaBuffer = videoBuffer;
}
}
this.altAudio = altAudio;
this.tick();
};
StreamController.prototype.onBufferCreated = function onBufferCreated(data) {
var tracks = data.tracks,
mediaTrack = void 0,
name = void 0,
alternate = false;
for (var type in tracks) {
var track = tracks[type];
if (track.id === 'main') {
name = type;
mediaTrack = track;
// keep video source buffer reference
if (type === 'video') {
this.videoBuffer = tracks[type].buffer;
}
} else {
alternate = true;
}
}
if (alternate && mediaTrack) {
logger["b" /* logger */].log('alternate track found, use ' + name + '.buffered to schedule main fragment loading');
this.mediaBuffer = mediaTrack.buffer;
} else {
this.mediaBuffer = this.media;
}
};
StreamController.prototype.onBufferAppended = function onBufferAppended(data) {
if (data.parent === 'main') {
var state = this.state;
if (state === State.PARSING || state === State.PARSED) {
// check if all buffers have been appended
this.pendingBuffering = data.pending > 0;
this._checkAppendedParsed();
}
}
};
StreamController.prototype._checkAppendedParsed = function _checkAppendedParsed() {
// trigger handler right now
if (this.state === State.PARSED && (!this.appended || !this.pendingBuffering)) {
var frag = this.fragCurrent;
if (frag) {
var media = this.mediaBuffer ? this.mediaBuffer : this.media;
logger["b" /* logger */].log('main buffered : ' + time_ranges.toString(media.buffered));
this.fragPrevious = frag;
var stats = this.stats;
stats.tbuffered = window.performance.now();
// we should get rid of this.fragLastKbps
this.fragLastKbps = Math.round(8 * stats.total / (stats.tbuffered - stats.tfirst));
this.hls.trigger(events["a" /* default */].FRAG_BUFFERED, { stats: stats, frag: frag, id: 'main' });
this.state = State.IDLE;
}
this.tick();
}
};
StreamController.prototype.onError = function onError(data) {
var frag = data.frag || this.fragCurrent;
// don't handle frag error not related to main fragment
if (frag && frag.type !== 'main') {
return;
}
// 0.5 : tolerance needed as some browsers stalls playback before reaching buffered end
var mediaBuffered = !!this.media && BufferHelper.isBuffered(this.media, this.media.currentTime) && BufferHelper.isBuffered(this.media, this.media.currentTime + 0.5);
switch (data.details) {
case errors["a" /* ErrorDetails */].FRAG_LOAD_ERROR:
case errors["a" /* ErrorDetails */].FRAG_LOAD_TIMEOUT:
case errors["a" /* ErrorDetails */].KEY_LOAD_ERROR:
case errors["a" /* ErrorDetails */].KEY_LOAD_TIMEOUT:
if (!data.fatal) {
// keep retrying until the limit will be reached
if (this.fragLoadError + 1 <= this.config.fragLoadingMaxRetry) {
// exponential backoff capped to config.fragLoadingMaxRetryTimeout
var delay = Math.min(Math.pow(2, this.fragLoadError) * this.config.fragLoadingRetryDelay, this.config.fragLoadingMaxRetryTimeout);
logger["b" /* logger */].warn('mediaController: frag loading failed, retry in ' + delay + ' ms');
this.retryDate = window.performance.now() + delay;
// retry loading state
// if loadedmetadata is not set, it means that we are emergency switch down on first frag
// in that case, reset startFragRequested flag
if (!this.loadedmetadata) {
this.startFragRequested = false;
this.nextLoadPosition = this.startPosition;
}
this.fragLoadError++;
this.state = State.FRAG_LOADING_WAITING_RETRY;
} else {
logger["b" /* logger */].error('mediaController: ' + data.details + ' reaches max retry, redispatch as fatal ...');
// switch error to fatal
data.fatal = true;
this.state = State.ERROR;
}
}
break;
case errors["a" /* ErrorDetails */].LEVEL_LOAD_ERROR:
case errors["a" /* ErrorDetails */].LEVEL_LOAD_TIMEOUT:
if (this.state !== State.ERROR) {
if (data.fatal) {
// if fatal error, stop processing
this.state = State.ERROR;
logger["b" /* logger */].warn('streamController: ' + data.details + ',switch to ' + this.state + ' state ...');
} else {
// in case of non fatal error while loading level, if level controller is not retrying to load level , switch back to IDLE
if (!data.levelRetry && this.state === State.WAITING_LEVEL) {
this.state = State.IDLE;
}
}
}
break;
case errors["a" /* ErrorDetails */].BUFFER_FULL_ERROR:
// if in appending state
if (data.parent === 'main' && (this.state === State.PARSING || this.state === State.PARSED)) {
// reduce max buf len if current position is buffered
if (mediaBuffered) {
this._reduceMaxBufferLength(this.config.maxBufferLength);
this.state = State.IDLE;
} else {
// current position is not buffered, but browser is still complaining about buffer full error
// this happens on IE/Edge, refer to https://github.com/video-dev/hls.js/pull/708
// in that case flush the whole buffer to recover
logger["b" /* logger */].warn('buffer full error also media.currentTime is not buffered, flush everything');
this.fragCurrent = null;
// flush everything
this.flushMainBuffer(0, Number.POSITIVE_INFINITY);
}
}
break;
default:
break;
}
};
StreamController.prototype._reduceMaxBufferLength = function _reduceMaxBufferLength(minLength) {
var config = this.config;
if (config.maxMaxBufferLength >= minLength) {
// reduce max buffer length as it might be too high. we do this to avoid loop flushing ...
config.maxMaxBufferLength /= 2;
logger["b" /* logger */].warn('main:reduce max buffer length to ' + config.maxMaxBufferLength + 's');
return true;
}
return false;
};
/**
* Checks the health of the buffer and attempts to resolve playback stalls.
* @private
*/
StreamController.prototype._checkBuffer = function _checkBuffer() {
var config = this.config,
media = this.media;
var stallDebounceInterval = 1000;
if (!media || media.readyState === 0) {
// Exit early if we don't have media or if the media hasn't bufferd anything yet (readyState 0)
return;
}
var currentTime = media.currentTime;
var mediaBuffer = this.mediaBuffer ? this.mediaBuffer : media;
var buffered = mediaBuffer.buffered;
if (!this.loadedmetadata && buffered.length) {
this.loadedmetadata = true;
this._seekToStartPos();
} else if (this.immediateSwitch) {
this.immediateLevelSwitchEnd();
} else {
var expectedPlaying = !(media.paused && media.readyState > 1 || // not playing when media is paused and sufficiently buffered
media.ended || // not playing when media is ended
media.buffered.length === 0); // not playing if nothing buffered
var tnow = window.performance.now();
if (currentTime !== this.lastCurrentTime) {
// The playhead is now moving, but was previously stalled
if (this.stallReported) {
logger["b" /* logger */].warn('playback not stuck anymore @' + currentTime + ', after ' + Math.round(tnow - this.stalled) + 'ms');
this.stallReported = false;
}
this.stalled = null;
this.nudgeRetry = 0;
} else if (expectedPlaying) {
// The playhead isn't moving but it should be
// Allow some slack time to for small stalls to resolve themselves
var stalledDuration = tnow - this.stalled;
var bufferInfo = BufferHelper.bufferInfo(media, currentTime, config.maxBufferHole);
if (!this.stalled) {
this.stalled = tnow;
return;
} else if (stalledDuration >= stallDebounceInterval) {
// Report stalling after trying to fix
this._reportStall(bufferInfo.len);
}
this._tryFixBufferStall(bufferInfo, stalledDuration);
}
}
};
StreamController.prototype.onFragLoadEmergencyAborted = function onFragLoadEmergencyAborted() {
this.state = State.IDLE;
// if loadedmetadata is not set, it means that we are emergency switch down on first frag
// in that case, reset startFragRequested flag
if (!this.loadedmetadata) {
this.startFragRequested = false;
this.nextLoadPosition = this.startPosition;
}
this.tick();
};
StreamController.prototype.onBufferFlushed = function onBufferFlushed() {
/* after successful buffer flushing, filter flushed fragments from bufferedFrags
use mediaBuffered instead of media (so that we will check against video.buffered ranges in case of alt audio track)
*/
var media = this.mediaBuffer ? this.mediaBuffer : this.media;
if (media) {
// filter fragments potentially evicted from buffer. this is to avoid memleak on live streams
this.fragmentTracker.detectEvictedFragments(loader_fragment.ElementaryStreamTypes.VIDEO, media.buffered);
}
// move to IDLE once flush complete. this should trigger new fragment loading
this.state = State.IDLE;
// reset reference to frag
this.fragPrevious = null;
};
StreamController.prototype.swapAudioCodec = function swapAudioCodec() {
this.audioCodecSwap = !this.audioCodecSwap;
};
StreamController.prototype.computeLivePosition = function computeLivePosition(sliding, levelDetails) {
var targetLatency = this.config.liveSyncDuration !== undefined ? this.config.liveSyncDuration : this.config.liveSyncDurationCount * levelDetails.targetduration;
return sliding + Math.max(0, levelDetails.totalduration - targetLatency);
};
/**
* Detects and attempts to fix known buffer stalling issues.
* @param bufferInfo - The properties of the current buffer.
* @param stalledDuration - The amount of time Hls.js has been stalling for.
* @private
*/
StreamController.prototype._tryFixBufferStall = function _tryFixBufferStall(bufferInfo, stalledDuration) {
var config = this.config,
media = this.media;
var currentTime = media.currentTime;
var jumpThreshold = 0.5; // tolerance needed as some browsers stalls playback before reaching buffered range end
var partial = this.fragmentTracker.getPartialFragment(currentTime);
if (partial) {
// Try to skip over the buffer hole caused by a partial fragment
// This method isn't limited by the size of the gap between buffered ranges
this._trySkipBufferHole(partial);
}
if (bufferInfo.len > jumpThreshold && stalledDuration > config.highBufferWatchdogPeriod * 1000) {
// Try to nudge currentTime over a buffer hole if we've been stalling for the configured amount of seconds
// We only try to jump the hole if it's under the configured size
// Reset stalled so to rearm watchdog timer
this.stalled = null;
this._tryNudgeBuffer();
}
};
/**
* Triggers a BUFFER_STALLED_ERROR event, but only once per stall period.
* @param bufferLen - The playhead distance from the end of the current buffer segment.
* @private
*/
StreamController.prototype._reportStall = function _reportStall(bufferLen) {
var hls = this.hls,
media = this.media,
stallReported = this.stallReported;
if (!stallReported) {
// Report stalled error once
this.stallReported = true;
logger["b" /* logger */].warn('Playback stalling at @' + media.currentTime + ' due to low buffer');
hls.trigger(events["a" /* default */].ERROR, {
type: errors["b" /* ErrorTypes */].MEDIA_ERROR,
details: errors["a" /* ErrorDetails */].BUFFER_STALLED_ERROR,
fatal: false,
buffer: bufferLen
});
}
};
/**
* Attempts to fix buffer stalls by jumping over known gaps caused by partial fragments
* @param partial - The partial fragment found at the current time (where playback is stalling).
* @private
*/
StreamController.prototype._trySkipBufferHole = function _trySkipBufferHole(partial) {
var hls = this.hls,
media = this.media;
var currentTime = media.currentTime;
var lastEndTime = 0;
// Check if currentTime is between unbuffered regions of partial fragments
for (var i = 0; i < media.buffered.length; i++) {
var startTime = media.buffered.start(i);
if (currentTime >= lastEndTime && currentTime < startTime) {
media.currentTime = Math.max(startTime, media.currentTime + 0.1);
logger["b" /* logger */].warn('skipping hole, adjusting currentTime from ' + currentTime + ' to ' + media.currentTime);
this.stalled = null;
hls.trigger(events["a" /* default */].ERROR, {
type: errors["b" /* ErrorTypes */].MEDIA_ERROR,
details: errors["a" /* ErrorDetails */].BUFFER_SEEK_OVER_HOLE,
fatal: false,
reason: 'fragment loaded with buffer holes, seeking from ' + currentTime + ' to ' + media.currentTime,
frag: partial
});
return;
}
lastEndTime = media.buffered.end(i);
}
};
/**
* Attempts to fix buffer stalls by advancing the mediaElement's current time by a small amount.
* @private
*/
StreamController.prototype._tryNudgeBuffer = function _tryNudgeBuffer() {
var config = this.config,
hls = this.hls,
media = this.media;
var currentTime = media.currentTime;
var nudgeRetry = (this.nudgeRetry || 0) + 1;
this.nudgeRetry = nudgeRetry;
if (nudgeRetry < config.nudgeMaxRetry) {
var targetTime = currentTime + nudgeRetry * config.nudgeOffset;
logger["b" /* logger */].log('adjust currentTime from ' + currentTime + ' to ' + targetTime);
// playback stalled in buffered area ... let's nudge currentTime to try to overcome this
media.currentTime = targetTime;
hls.trigger(events["a" /* default */].ERROR, {
type: errors["b" /* ErrorTypes */].MEDIA_ERROR,
details: errors["a" /* ErrorDetails */].BUFFER_NUDGE_ON_STALL,
fatal: false
});
} else {
logger["b" /* logger */].error('still stuck in high buffer @' + currentTime + ' after ' + config.nudgeMaxRetry + ', raise fatal error');
hls.trigger(events["a" /* default */].ERROR, {
type: errors["b" /* ErrorTypes */].MEDIA_ERROR,
details: errors["a" /* ErrorDetails */].BUFFER_STALLED_ERROR,
fatal: true
});
}
};
/**
* Seeks to the set startPosition if not equal to the mediaElement's current time.
* @private
*/
StreamController.prototype._seekToStartPos = function _seekToStartPos() {
var media = this.media;
var currentTime = media.currentTime;
// only adjust currentTime if different from startPosition or if startPosition not buffered
// at that stage, there should be only one buffered range, as we reach that code after first fragment has been buffered
var startPosition = media.seeking ? currentTime : this.startPosition;
// if currentTime not matching with expected startPosition or startPosition not buffered but close to first buffered
if (currentTime !== startPosition) {
// if startPosition not buffered, let's seek to buffered.start(0)
logger["b" /* logger */].log('target start position not buffered, seek to buffered.start(0) ' + startPosition + ' from current time ' + currentTime + ' ');
media.currentTime = startPosition;
}
};
stream_controller__createClass(StreamController, [{
key: 'state',
set: function set(nextState) {
if (this.state !== nextState) {
var previousState = this.state;
this._state = nextState;
logger["b" /* logger */].log('main stream:' + previousState + '->' + nextState);
this.hls.trigger(events["a" /* default */].STREAM_STATE_TRANSITION, { previousState: previousState, nextState: nextState });
}
},
get: function get() {
return this._state;
}
}, {
key: 'currentLevel',
get: function get() {
var media = this.media;
if (media) {
var frag = this.getBufferedFrag(media.currentTime);
if (frag) {
return frag.level;
}
}
return -1;
}
}, {
key: 'nextBufferedFrag',
get: function get() {
var media = this.media;
if (media) {
// first get end range of current fragment
return this.followingBufferedFrag(this.getBufferedFrag(media.currentTime));
} else {
return null;
}
}
}, {
key: 'nextLevel',
get: function get() {
var frag = this.nextBufferedFrag;
if (frag) {
return frag.level;
} else {
return -1;
}
}
}, {
key: 'liveSyncPosition',
get: function get() {
return this._liveSyncPosition;
},
set: function set(value) {
this._liveSyncPosition = value;
}
}]);
return StreamController;
}(task_loop);
/* harmony default export */ var stream_controller = (stream_controller_StreamController);
// CONCATENATED MODULE: ./src/controller/level-controller.js
var level_controller__typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.p...
var level_controller__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; i...
function level_controller__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function level_controller__possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : ...
function level_controller__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 = Obj...
/*
* Level Controller
*/
var level_controller__window = window,
level_controller_performance = level_controller__window.performance;
var level_controller_LevelController = function (_EventHandler) {
level_controller__inherits(LevelController, _EventHandler);
function LevelController(hls) {
level_controller__classCallCheck(this, LevelController);
var _this = level_controller__possibleConstructorReturn(this, _EventHandler.call(this, hls, events["a" /* default */].MANIFEST_LOADED, events["a" /* default */].LEVEL_LOADED, events["a" /* default */].AUDIO_TRACK_SWITCHED, events["a" /* default *...
_this.canload = false;
_this.currentLevelIndex = null;
_this.manualLevelIndex = -1;
_this.timer = null;
return _this;
}
LevelController.prototype.onHandlerDestroying = function onHandlerDestroying() {
this.clearTimer();
this.manualLevelIndex = -1;
};
LevelController.prototype.clearTimer = function clearTimer() {
if (this.timer !== null) {
clearTimeout(this.timer);
this.timer = null;
}
};
LevelController.prototype.startLoad = function startLoad() {
var levels = this._levels;
this.canload = true;
this.levelRetryCount = 0;
// clean up live level details to force reload them, and reset load errors
if (levels) {
levels.forEach(function (level) {
level.loadError = 0;
var levelDetails = level.details;
if (levelDetails && levelDetails.live) {
level.details = undefined;
}
});
}
// speed up live playlist refresh if timer exists
if (this.timer !== null) {
this.loadLevel();
}
};
LevelController.prototype.stopLoad = function stopLoad() {
this.canload = false;
};
LevelController.prototype.onManifestLoaded = function onManifestLoaded(data) {
var levels = [];
var bitrateStart = void 0;
var levelSet = {};
var levelFromSet = null;
var videoCodecFound = false;
var audioCodecFound = false;
var chromeOrFirefox = /chrome|firefox/.test(navigator.userAgent.toLowerCase());
var audioTracks = [];
// regroup redundant levels together
data.levels.forEach(function (level) {
level.loadError = 0;
level.fragmentError = false;
videoCodecFound = videoCodecFound || !!level.videoCodec;
audioCodecFound = audioCodecFound || !!level.audioCodec || !!(level.attrs && level.attrs.AUDIO);
// erase audio codec info if browser does not support mp4a.40.34.
// demuxer will autodetect codec and fallback to mpeg/audio
if (chromeOrFirefox && level.audioCodec && level.audioCodec.indexOf('mp4a.40.34') !== -1) {
level.audioCodec = undefined;
}
levelFromSet = levelSet[level.bitrate]; // FIXME: we would also have to match the resolution here
if (!levelFromSet) {
level.url = [level.url];
level.urlId = 0;
levelSet[level.bitrate] = level;
levels.push(level);
} else {
levelFromSet.url.push(level.url);
}
if (level.attrs && level.attrs.AUDIO) {
addGroupId(levelFromSet || level, 'audio', level.attrs.AUDIO);
}
if (level.attrs && level.attrs.SUBTITLES) {
addGroupId(levelFromSet || level, 'text', level.attrs.SUBTITLES);
}
});
// remove audio-only level if we also have levels with audio+video codecs signalled
if (videoCodecFound && audioCodecFound) {
levels = levels.filter(function (_ref) {
var videoCodec = _ref.videoCodec;
return !!videoCodec;
});
}
// only keep levels with supported audio/video codecs
levels = levels.filter(function (_ref2) {
var audioCodec = _ref2.audioCodec,
videoCodec = _ref2.videoCodec;
return (!audioCodec || isCodecSupportedInMp4(audioCodec)) && (!videoCodec || isCodecSupportedInMp4(videoCodec));
});
if (data.audioTracks) {
audioTracks = data.audioTracks.filter(function (track) {
return !track.audioCodec || isCodecSupportedInMp4(track.audioCodec, 'audio');
});
}
if (levels.length > 0) {
// start bitrate is the first bitrate of the manifest
bitrateStart = levels[0].bitrate;
// sort level on bitrate
levels.sort(function (a, b) {
return a.bitrate - b.bitrate;
});
this._levels = levels;
share/public_html/static/hls.js view on Meta::CPAN
audio: audioCodecFound,
video: videoCodecFound,
altAudio: audioTracks.length > 0 && videoCodecFound
});
} else {
this.hls.trigger(events["a" /* default */].ERROR, {
type: errors["b" /* ErrorTypes */].MEDIA_ERROR,
details: errors["a" /* ErrorDetails */].MANIFEST_INCOMPATIBLE_CODECS_ERROR,
fatal: true,
url: this.hls.url,
reason: 'no level with compatible codecs found in manifest'
});
}
};
LevelController.prototype.setLevelInternal = function setLevelInternal(newLevel) {
var levels = this._levels;
var hls = this.hls;
// check if level idx is valid
if (newLevel >= 0 && newLevel < levels.length) {
// stopping live reloading timer if any
this.clearTimer();
if (this.currentLevelIndex !== newLevel) {
logger["b" /* logger */].log('switching to level ' + newLevel);
this.currentLevelIndex = newLevel;
var levelProperties = levels[newLevel];
levelProperties.level = newLevel;
hls.trigger(events["a" /* default */].LEVEL_SWITCHING, levelProperties);
}
var level = levels[newLevel];
var levelDetails = level.details;
// check if we need to load playlist for this level
if (!levelDetails || levelDetails.live) {
// level not retrieved yet, or live playlist we need to (re)load it
var urlId = level.urlId;
hls.trigger(events["a" /* default */].LEVEL_LOADING, { url: level.url[urlId], level: newLevel, id: urlId });
}
} else {
// invalid level id given, trigger error
hls.trigger(events["a" /* default */].ERROR, {
type: errors["b" /* ErrorTypes */].OTHER_ERROR,
details: errors["a" /* ErrorDetails */].LEVEL_SWITCH_ERROR,
level: newLevel,
fatal: false,
reason: 'invalid level idx'
});
}
};
LevelController.prototype.onError = function onError(data) {
if (data.fatal) {
if (data.type === errors["b" /* ErrorTypes */].NETWORK_ERROR) {
this.clearTimer();
}
return;
}
var levelError = false,
fragmentError = false;
var levelIndex = void 0;
// try to recover not fatal errors
switch (data.details) {
case errors["a" /* ErrorDetails */].FRAG_LOAD_ERROR:
case errors["a" /* ErrorDetails */].FRAG_LOAD_TIMEOUT:
case errors["a" /* ErrorDetails */].KEY_LOAD_ERROR:
case errors["a" /* ErrorDetails */].KEY_LOAD_TIMEOUT:
levelIndex = data.frag.level;
fragmentError = true;
break;
case errors["a" /* ErrorDetails */].LEVEL_LOAD_ERROR:
case errors["a" /* ErrorDetails */].LEVEL_LOAD_TIMEOUT:
levelIndex = data.context.level;
levelError = true;
break;
case errors["a" /* ErrorDetails */].REMUX_ALLOC_ERROR:
levelIndex = data.level;
levelError = true;
break;
}
if (levelIndex !== undefined) {
this.recoverLevel(data, levelIndex, levelError, fragmentError);
}
};
/**
* Switch to a redundant stream if any available.
* If redundant stream is not available, emergency switch down if ABR mode is enabled.
*
* @param {Object} errorEvent
* @param {Number} levelIndex current level index
* @param {Boolean} levelError
* @param {Boolean} fragmentError
*/
// FIXME Find a better abstraction where fragment/level retry management is well decoupled
LevelController.prototype.recoverLevel = function recoverLevel(errorEvent, levelIndex, levelError, fragmentError) {
var _this2 = this;
var config = this.hls.config;
var errorDetails = errorEvent.details;
var level = this._levels[levelIndex];
var redundantLevels = void 0,
delay = void 0,
nextLevel = void 0;
level.loadError++;
level.fragmentError = fragmentError;
if (levelError) {
if (this.levelRetryCount + 1 <= config.levelLoadingMaxRetry) {
// exponential backoff capped to max retry timeout
delay = Math.min(Math.pow(2, this.levelRetryCount) * config.levelLoadingRetryDelay, config.levelLoadingMaxRetryTimeout);
// Schedule level reload
this.timer = setTimeout(function () {
return _this2.loadLevel();
}, delay);
// boolean used to inform stream controller not to switch back to IDLE on non fatal error
errorEvent.levelRetry = true;
this.levelRetryCount++;
logger["b" /* logger */].warn('level controller, ' + errorDetails + ', retry in ' + delay + ' ms, current retry count is ' + this.levelRetryCount);
} else {
logger["b" /* logger */].error('level controller, cannot recover from ' + errorDetails + ' error');
this.currentLevelIndex = null;
// stopping live reloading timer if any
this.clearTimer();
// switch error to fatal
errorEvent.fatal = true;
return;
}
}
// Try any redundant streams if available for both errors: level and fragment
// If level.loadError reaches redundantLevels it means that we tried them all, no hope => let's switch down
if (levelError || fragmentError) {
redundantLevels = level.url.length;
if (redundantLevels > 1 && level.loadError < redundantLevels) {
level.urlId = (level.urlId + 1) % redundantLevels;
level.details = undefined;
logger["b" /* logger */].warn('level controller, ' + errorDetails + ' for level ' + levelIndex + ': switching to redundant URL-id ' + level.urlId);
// console.log('Current audio track group ID:', this.hls.audioTracks[this.hls.audioTrack].groupId);
// console.log('New video quality level audio group id:', level.attrs.AUDIO);
} else {
// Search for available level
if (this.manualLevelIndex === -1) {
// When lowest level has been reached, let's start hunt from the top
nextLevel = levelIndex === 0 ? this._levels.length - 1 : levelIndex - 1;
logger["b" /* logger */].warn('level controller, ' + errorDetails + ': switch to ' + nextLevel);
this.hls.nextAutoLevel = this.currentLevelIndex = nextLevel;
} else if (fragmentError) {
// Allow fragment retry as long as configuration allows.
// reset this._level so that another call to set level() will trigger again a frag load
logger["b" /* logger */].warn('level controller, ' + errorDetails + ': reload a fragment');
this.currentLevelIndex = null;
}
}
}
};
// reset errors on the successful load of a fragment
LevelController.prototype.onFragLoaded = function onFragLoaded(_ref3) {
var frag = _ref3.frag;
if (frag !== undefined && frag.type === 'main') {
var level = this._levels[frag.level];
if (level !== undefined) {
level.fragmentError = false;
level.loadError = 0;
this.levelRetryCount = 0;
}
}
};
LevelController.prototype.onLevelLoaded = function onLevelLoaded(data) {
var _this3 = this;
var levelId = data.level;
// only process level loaded events matching with expected level
if (levelId !== this.currentLevelIndex) {
return;
}
var curLevel = this._levels[levelId];
// reset level load error counter on successful level loaded only if there is no issues with fragments
if (!curLevel.fragmentError) {
curLevel.loadError = 0;
this.levelRetryCount = 0;
}
var newDetails = data.details;
// if current playlist is a live playlist, arm a timer to reload it
if (newDetails.live) {
var targetdurationMs = 1000 * (newDetails.averagetargetduration ? newDetails.averagetargetduration : newDetails.targetduration);
var reloadInterval = targetdurationMs,
curDetails = curLevel.details;
if (curDetails && newDetails.endSN === curDetails.endSN) {
// follow HLS Spec, If the client reloads a Playlist file and finds that it has not
// changed then it MUST wait for a period of one-half the target
// duration before retrying.
reloadInterval /= 2;
logger["b" /* logger */].log('same live playlist, reload twice faster');
}
// decrement reloadInterval with level loading delay
reloadInterval -= level_controller_performance.now() - data.stats.trequest;
// in any case, don't reload more than half of target duration
reloadInterval = Math.max(targetdurationMs / 2, Math.round(reloadInterval));
logger["b" /* logger */].log('live playlist, reload in ' + Math.round(reloadInterval) + ' ms');
this.timer = setTimeout(function () {
return _this3.loadLevel();
}, reloadInterval);
} else {
this.clearTimer();
}
};
LevelController.prototype.onAudioTrackSwitched = function onAudioTrackSwitched(data) {
var audioGroupId = this.hls.audioTracks[data.id].groupId;
var currentLevel = this.hls.levels[this.currentLevelIndex];
if (!currentLevel) {
return;
}
if (currentLevel.audioGroupIds) {
var urlId = currentLevel.audioGroupIds.findIndex(function (groupId) {
return groupId === audioGroupId;
});
if (urlId !== currentLevel.urlId) {
currentLevel.urlId = urlId;
this.startLoad();
}
}
};
LevelController.prototype.loadLevel = function loadLevel() {
logger["b" /* logger */].debug('call to loadLevel');
if (this.currentLevelIndex !== null && this.canload) {
var levelObject = this._levels[this.currentLevelIndex];
if ((typeof levelObject === 'undefined' ? 'undefined' : level_controller__typeof(levelObject)) === 'object' && levelObject.url.length > 0) {
var level = this.currentLevelIndex;
var id = levelObject.urlId;
var url = levelObject.url[id];
logger["b" /* logger */].log('Attempt loading level index ' + level + ' with URL-id ' + id);
share/public_html/static/hls.js view on Meta::CPAN
function id3_track_controller__possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? cal...
function id3_track_controller__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 =...
/*
* id3 metadata track controller
*/
var id3_track_controller_ID3TrackController = function (_EventHandler) {
id3_track_controller__inherits(ID3TrackController, _EventHandler);
function ID3TrackController(hls) {
id3_track_controller__classCallCheck(this, ID3TrackController);
var _this = id3_track_controller__possibleConstructorReturn(this, _EventHandler.call(this, hls, events["a" /* default */].MEDIA_ATTACHED, events["a" /* default */].MEDIA_DETACHING, events["a" /* default */].FRAG_PARSING_METADATA));
_this.id3Track = undefined;
_this.media = undefined;
return _this;
}
ID3TrackController.prototype.destroy = function destroy() {
event_handler.prototype.destroy.call(this);
};
// Add ID3 metatadata text track.
ID3TrackController.prototype.onMediaAttached = function onMediaAttached(data) {
this.media = data.media;
if (!this.media) {}
};
ID3TrackController.prototype.onMediaDetaching = function onMediaDetaching() {
clearCurrentCues(this.id3Track);
this.id3Track = undefined;
this.media = undefined;
};
ID3TrackController.prototype.getID3Track = function getID3Track(textTracks) {
for (var i = 0; i < textTracks.length; i++) {
var textTrack = textTracks[i];
if (textTrack.kind === 'metadata' && textTrack.label === 'id3') {
// send 'addtrack' when reusing the textTrack for metadata,
// same as what we do for captions
sendAddTrackEvent(textTrack, this.media);
return textTrack;
}
}
return this.media.addTextTrack('metadata', 'id3');
};
ID3TrackController.prototype.onFragParsingMetadata = function onFragParsingMetadata(data) {
var fragment = data.frag;
var samples = data.samples;
// create track dynamically
if (!this.id3Track) {
this.id3Track = this.getID3Track(this.media.textTracks);
this.id3Track.mode = 'hidden';
}
// Attempt to recreate Safari functionality by creating
// WebKitDataCue objects when available and store the decoded
// ID3 data in the value property of the cue
var Cue = window.WebKitDataCue || window.VTTCue || window.TextTrackCue;
for (var i = 0; i < samples.length; i++) {
var frames = id3["a" /* default */].getID3Frames(samples[i].data);
if (frames) {
var startTime = samples[i].pts;
var endTime = i < samples.length - 1 ? samples[i + 1].pts : fragment.endPTS;
// Give a slight bump to the endTime if it's equal to startTime to avoid a SyntaxError in IE
if (startTime === endTime) {
endTime += 0.0001;
}
for (var j = 0; j < frames.length; j++) {
var frame = frames[j];
// Safari doesn't put the timestamp frame in the TextTrack
if (!id3["a" /* default */].isTimeStampFrame(frame)) {
var cue = new Cue(startTime, endTime, '');
cue.value = frame;
this.id3Track.addCue(cue);
}
}
}
}
};
return ID3TrackController;
}(event_handler);
/* harmony default export */ var id3_track_controller = (id3_track_controller_ID3TrackController);
// CONCATENATED MODULE: ./src/is-supported.js
function is_supported_isSupported() {
var mediaSource = getMediaSource();
var sourceBuffer = window.SourceBuffer || window.WebKitSourceBuffer;
var isTypeSupported = mediaSource && typeof mediaSource.isTypeSupported === 'function' && mediaSource.isTypeSupported('video/mp4; codecs="avc1.42E01E,mp4a.40.2"');
// if SourceBuffer is exposed ensure its API is valid
// safari and old version of Chrome doe not expose SourceBuffer globally so checking SourceBuffer.prototype is impossible
var sourceBufferValidAPI = !sourceBuffer || sourceBuffer.prototype && typeof sourceBuffer.prototype.appendBuffer === 'function' && typeof sourceBuffer.prototype.remove === 'function';
return !!isTypeSupported && !!sourceBufferValidAPI;
}
// CONCATENATED MODULE: ./src/utils/ewma.js
function ewma__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
/*
* compute an Exponential Weighted moving average
* - https://en.wikipedia.org/wiki/Moving_average#Exponential_moving_average
* - heavily inspired from shaka-player
*/
var EWMA = function () {
// About half of the estimated value will be from the last |halfLife| samples by weight.
function EWMA(halfLife) {
ewma__classCallCheck(this, EWMA);
// Larger values of alpha expire historical data more slowly.
this.alpha_ = halfLife ? Math.exp(Math.log(0.5) / halfLife) : 0;
this.estimate_ = 0;
this.totalWeight_ = 0;
}
EWMA.prototype.sample = function sample(weight, value) {
var adjAlpha = Math.pow(this.alpha_, weight);
this.estimate_ = value * (1 - adjAlpha) + adjAlpha * this.estimate_;
this.totalWeight_ += weight;
share/public_html/static/hls.js view on Meta::CPAN
var ewma_bandwidth_estimator_EwmaBandWidthEstimator = function () {
function EwmaBandWidthEstimator(hls, slow, fast, defaultEstimate) {
ewma_bandwidth_estimator__classCallCheck(this, EwmaBandWidthEstimator);
this.hls = hls;
this.defaultEstimate_ = defaultEstimate;
this.minWeight_ = 0.001;
this.minDelayMs_ = 50;
this.slow_ = new ewma(slow);
this.fast_ = new ewma(fast);
}
EwmaBandWidthEstimator.prototype.sample = function sample(durationMs, numBytes) {
durationMs = Math.max(durationMs, this.minDelayMs_);
var bandwidth = 8000 * numBytes / durationMs,
// console.log('instant bw:'+ Math.round(bandwidth));
// we weight sample using loading duration....
weight = durationMs / 1000;
this.fast_.sample(weight, bandwidth);
this.slow_.sample(weight, bandwidth);
};
EwmaBandWidthEstimator.prototype.canEstimate = function canEstimate() {
var fast = this.fast_;
return fast && fast.getTotalWeight() >= this.minWeight_;
};
EwmaBandWidthEstimator.prototype.getEstimate = function getEstimate() {
if (this.canEstimate()) {
// console.log('slow estimate:'+ Math.round(this.slow_.getEstimate()));
// console.log('fast estimate:'+ Math.round(this.fast_.getEstimate()));
// Take the minimum of these two estimates. This should have the effect of
// adapting down quickly, but up more slowly.
return Math.min(this.fast_.getEstimate(), this.slow_.getEstimate());
} else {
return this.defaultEstimate_;
}
};
EwmaBandWidthEstimator.prototype.destroy = function destroy() {};
return EwmaBandWidthEstimator;
}();
/* harmony default export */ var ewma_bandwidth_estimator = (ewma_bandwidth_estimator_EwmaBandWidthEstimator);
// CONCATENATED MODULE: ./src/controller/abr-controller.js
var abr_controller__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 ...
function abr_controller__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function abr_controller__possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : se...
function abr_controller__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 = Objec...
/*
* simple ABR Controller
* - compute next level based on last fragment bw heuristics
* - implement an abandon rules triggered if we have less than 2 frag buffered and if computed bw shows that we risk buffer stalling
*/
var abr_controller__window = window,
abr_controller_performance = abr_controller__window.performance;
var abr_controller_AbrController = function (_EventHandler) {
abr_controller__inherits(AbrController, _EventHandler);
function AbrController(hls) {
abr_controller__classCallCheck(this, AbrController);
var _this = abr_controller__possibleConstructorReturn(this, _EventHandler.call(this, hls, events["a" /* default */].FRAG_LOADING, events["a" /* default */].FRAG_LOADED, events["a" /* default */].FRAG_BUFFERED, events["a" /* default */].ERROR));
_this.lastLoadedFragLevel = 0;
_this._nextAutoLevel = -1;
_this.hls = hls;
_this.timer = null;
_this._bwEstimator = null;
_this.onCheck = _this._abandonRulesCheck.bind(_this);
return _this;
}
AbrController.prototype.destroy = function destroy() {
this.clearTimer();
event_handler.prototype.destroy.call(this);
};
AbrController.prototype.onFragLoading = function onFragLoading(data) {
var frag = data.frag;
if (frag.type === 'main') {
if (!this.timer) {
this.fragCurrent = frag;
this.timer = setInterval(this.onCheck, 100);
}
// lazy init of BwEstimator, rationale is that we use different params for Live/VoD
// so we need to wait for stream manifest / playlist type to instantiate it.
if (!this._bwEstimator) {
var hls = this.hls;
var config = hls.config;
var level = frag.level;
var isLive = hls.levels[level].details.live;
var ewmaFast = void 0,
ewmaSlow = void 0;
if (isLive) {
ewmaFast = config.abrEwmaFastLive;
ewmaSlow = config.abrEwmaSlowLive;
} else {
ewmaFast = config.abrEwmaFastVoD;
ewmaSlow = config.abrEwmaSlowVoD;
}
this._bwEstimator = new ewma_bandwidth_estimator(hls, ewmaSlow, ewmaFast, config.abrEwmaDefaultEstimate);
}
}
};
AbrController.prototype._abandonRulesCheck = function _abandonRulesCheck() {
/*
monitor fragment retrieval time...
we compute expected time of arrival of the complete fragment.
we compare it to expected time of buffer starvation
*/
var hls = this.hls;
var video = hls.media;
var frag = this.fragCurrent;
if (!frag) {
return;
}
var loader = frag.loader;
var minAutoLevel = hls.minAutoLevel;
// if loader has been destroyed or loading has been aborted, stop timer and return
if (!loader || loader.stats && loader.stats.aborted) {
logger["b" /* logger */].warn('frag loader destroy or aborted, disarm abandonRules');
this.clearTimer();
// reset forced auto level value so that next level will be selected
this._nextAutoLevel = -1;
return;
}
var stats = loader.stats;
/* only monitor frag retrieval time if
(video not paused OR first fragment being loaded(ready state === HAVE_NOTHING = 0)) AND autoswitching enabled AND not lowest level (=> means that we have several levels) */
if (video && stats && (!video.paused && video.playbackRate !== 0 || !video.readyState) && frag.autoLevel && frag.level) {
var requestDelay = abr_controller_performance.now() - stats.trequest,
playbackRate = Math.abs(video.playbackRate);
// monitor fragment load progress after half of expected fragment duration,to stabilize bitrate
if (requestDelay > 500 * frag.duration / playbackRate) {
var levels = hls.levels,
loadRate = Math.max(1, stats.bw ? stats.bw / 8 : stats.loaded * 1000 / requestDelay),
// byte/s; at least 1 byte/s to avoid division by zero
// compute expected fragment length using frag duration and level bitrate. also ensure that expected len is gte than already loaded size
level = levels[frag.level],
levelBitrate = level.realBitrate ? Math.max(level.realBitrate, level.bitrate) : level.bitrate,
expectedLen = stats.total ? stats.total : Math.max(stats.loaded, Math.round(frag.duration * levelBitrate / 8)),
pos = video.currentTime,
fragLoadedDelay = (expectedLen - stats.loaded) / loadRate,
bufferStarvationDelay = (BufferHelper.bufferInfo(video, pos, hls.config.maxBufferHole).end - pos) / playbackRate;
// consider emergency switch down only if we have less than 2 frag buffered AND
// time to finish loading current fragment is bigger than buffer starvation delay
// ie if we risk buffer starvation if bw does not increase quickly
if (bufferStarvationDelay < 2 * frag.duration / playbackRate && fragLoadedDelay > bufferStarvationDelay) {
var fragLevelNextLoadedDelay = void 0,
nextLoadLevel = void 0;
// lets iterate through lower level and try to find the biggest one that could avoid rebuffering
// we start from current level - 1 and we step down , until we find a matching level
for (nextLoadLevel = frag.level - 1; nextLoadLevel > minAutoLevel; nextLoadLevel--) {
// compute time to load next fragment at lower level
// 0.8 : consider only 80% of current bw to be conservative
// 8 = bits per byte (bps/Bps)
var levelNextBitrate = levels[nextLoadLevel].realBitrate ? Math.max(levels[nextLoadLevel].realBitrate, levels[nextLoadLevel].bitrate) : levels[nextLoadLevel].bitrate;
fragLevelNextLoadedDelay = frag.duration * levelNextBitrate / (8 * 0.8 * loadRate);
if (fragLevelNextLoadedDelay < bufferStarvationDelay) {
// we found a lower level that be rebuffering free with current estimated bw !
break;
}
}
// only emergency switch down if it takes less time to load new fragment at lowest level instead
// of finishing loading current one ...
if (fragLevelNextLoadedDelay < fragLoadedDelay) {
logger["b" /* logger */].warn('loading too slow, abort fragment loading and switch to level ' + nextLoadLevel + ':fragLoadedDelay[' + nextLoadLevel + ']<fragLoadedDelay[' + (frag.level - 1) + '];bufferStarvationDelay:' + fragLevelNextLoad...
// force next load level in auto mode
hls.nextLoadLevel = nextLoadLevel;
// update bw estimate for this fragment before cancelling load (this will help reducing the bw)
this._bwEstimator.sample(requestDelay, stats.loaded);
// abort fragment loading
loader.abort();
// stop abandon rules timer
this.clearTimer();
hls.trigger(events["a" /* default */].FRAG_LOAD_EMERGENCY_ABORTED, { frag: frag, stats: stats });
}
}
}
}
};
AbrController.prototype.onFragLoaded = function onFragLoaded(data) {
var frag = data.frag;
if (frag.type === 'main' && !isNaN(frag.sn)) {
// stop monitoring bw once frag loaded
this.clearTimer();
// store level id after successful fragment load
this.lastLoadedFragLevel = frag.level;
// reset forced auto level value so that next level will be selected
this._nextAutoLevel = -1;
// compute level average bitrate
if (this.hls.config.abrMaxWithRealBitrate) {
var level = this.hls.levels[frag.level];
var loadedBytes = (level.loaded ? level.loaded.bytes : 0) + data.stats.loaded;
var loadedDuration = (level.loaded ? level.loaded.duration : 0) + data.frag.duration;
level.loaded = { bytes: loadedBytes, duration: loadedDuration };
level.realBitrate = Math.round(8 * loadedBytes / loadedDuration);
}
// if fragment has been loaded to perform a bitrate test,
if (data.frag.bitrateTest) {
var stats = data.stats;
stats.tparsed = stats.tbuffered = stats.tload;
this.onFragBuffered(data);
}
}
};
AbrController.prototype.onFragBuffered = function onFragBuffered(data) {
var stats = data.stats;
var frag = data.frag;
// only update stats on first frag buffering
// if same frag is loaded multiple times, it might be in browser cache, and loaded quickly
// and leading to wrong bw estimation
// on bitrate test, also only update stats once (if tload = tbuffered == on FRAG_LOADED)
if (stats.aborted !== true && frag.type === 'main' && !isNaN(frag.sn) && (!frag.bitrateTest || stats.tload === stats.tbuffered)) {
// use tparsed-trequest instead of tbuffered-trequest to compute fragLoadingProcessing; rationale is that buffer appending only happens once media is attached
// in case we use config.startFragPrefetch while media is not attached yet, fragment might be parsed while media not attached yet, but it will only be buffered on media attached
// as a consequence it could happen really late in the process. meaning that appending duration might appears huge ... leading to underestimated throughput estimation
var fragLoadingProcessingMs = stats.tparsed - stats.trequest;
logger["b" /* logger */].log('latency/loading/parsing/append/kbps:' + Math.round(stats.tfirst - stats.trequest) + '/' + Math.round(stats.tload - stats.tfirst) + '/' + Math.round(stats.tparsed - stats.tload) + '/' + Math.round(stats.tbuffered - ...
this._bwEstimator.sample(fragLoadingProcessingMs, stats.loaded);
stats.bwEstimate = this._bwEstimator.getEstimate();
// if fragment has been loaded to perform a bitrate test, (hls.startLevel = -1), store bitrate test delay duration
if (frag.bitrateTest) {
this.bitrateTestDelay = fragLoadingProcessingMs / 1000;
} else {
this.bitrateTestDelay = 0;
}
}
};
AbrController.prototype.onError = function onError(data) {
// stop timer in case of frag loading error
switch (data.details) {
case errors["a" /* ErrorDetails */].FRAG_LOAD_ERROR:
case errors["a" /* ErrorDetails */].FRAG_LOAD_TIMEOUT:
this.clearTimer();
break;
default:
break;
}
};
AbrController.prototype.clearTimer = function clearTimer() {
clearInterval(this.timer);
this.timer = null;
};
// return next auto level
AbrController.prototype._findBestLevel = function _findBestLevel(currentLevel, currentFragDuration, currentBw, minAutoLevel, maxAutoLevel, maxFetchDuration, bwFactor, bwUpFactor, levels) {
for (var i = maxAutoLevel; i >= minAutoLevel; i--) {
var levelInfo = levels[i],
levelDetails = levelInfo.details,
avgDuration = levelDetails ? levelDetails.totalduration / levelDetails.fragments.length : currentFragDuration,
live = levelDetails ? levelDetails.live : false,
adjustedbw = void 0;
// follow algorithm captured from stagefright :
// https://android.googlesource.com/platform/frameworks/av/+/master/media/libstagefright/httplive/LiveSession.cpp
// Pick the highest bandwidth stream below or equal to estimated bandwidth.
// consider only 80% of the available bandwidth, but if we are switching up,
// be even more conservative (70%) to avoid overestimating and immediately
// switching back.
if (i <= currentLevel) {
adjustedbw = bwFactor * currentBw;
} else {
adjustedbw = bwUpFactor * currentBw;
}
var bitrate = levels[i].realBitrate ? Math.max(levels[i].realBitrate, levels[i].bitrate) : levels[i].bitrate,
fetchDuration = bitrate * avgDuration / adjustedbw;
logger["b" /* logger */].trace('level/adjustedbw/bitrate/avgDuration/maxFetchDuration/fetchDuration: ' + i + '/' + Math.round(adjustedbw) + '/' + bitrate + '/' + avgDuration + '/' + maxFetchDuration + '/' + fetchDuration);
// if adjusted bw is greater than level bitrate AND
if (adjustedbw > bitrate && (
// fragment fetchDuration unknown OR live stream OR fragment fetchDuration less than max allowed fetch duration, then this level matches
// we don't account for max Fetch Duration for live streams, this is to avoid switching down when near the edge of live sliding window ...
// special case to support startLevel = -1 (bitrateTest) on live streams : in that case we should not exit loop so that _findBestLevel will return -1
!fetchDuration || live && !this.bitrateTestDelay || fetchDuration < maxFetchDuration)) {
// as we are looping from highest to lowest, this will return the best achievable quality level
return i;
}
}
// not enough time budget even with quality level 0 ... rebuffering might happen
return -1;
};
abr_controller__createClass(AbrController, [{
key: 'nextAutoLevel',
get: function get() {
var forcedAutoLevel = this._nextAutoLevel;
var bwEstimator = this._bwEstimator;
// in case next auto level has been forced, and bw not available or not reliable, return forced value
if (forcedAutoLevel !== -1 && (!bwEstimator || !bwEstimator.canEstimate())) {
return forcedAutoLevel;
}
// compute next level using ABR logic
var nextABRAutoLevel = this._nextABRAutoLevel;
// if forced auto level has been defined, use it to cap ABR computed quality level
if (forcedAutoLevel !== -1) {
nextABRAutoLevel = Math.min(forcedAutoLevel, nextABRAutoLevel);
}
return nextABRAutoLevel;
},
set: function set(nextLevel) {
this._nextAutoLevel = nextLevel;
}
}, {
key: '_nextABRAutoLevel',
get: function get() {
var hls = this.hls,
maxAutoLevel = hls.maxAutoLevel,
levels = hls.levels,
config = hls.config,
minAutoLevel = hls.minAutoLevel;
var video = hls.media,
currentLevel = this.lastLoadedFragLevel,
currentFragDuration = this.fragCurrent ? this.fragCurrent.duration : 0,
pos = video ? video.currentTime : 0,
// playbackRate is the absolute value of the playback rate; if video.playbackRate is 0, we use 1 to load as
// if we're playing back at the normal rate.
playbackRate = video && video.playbackRate !== 0 ? Math.abs(video.playbackRate) : 1.0,
avgbw = this._bwEstimator ? this._bwEstimator.getEstimate() : config.abrEwmaDefaultEstimate,
// bufferStarvationDelay is the wall-clock time left until the playback buffer is exhausted.
bufferStarvationDelay = (BufferHelper.bufferInfo(video, pos, config.maxBufferHole).end - pos) / playbackRate;
// First, look to see if we can find a level matching with our avg bandwidth AND that could also guarantee no rebuffering at all
var bestLevel = this._findBestLevel(currentLevel, currentFragDuration, avgbw, minAutoLevel, maxAutoLevel, bufferStarvationDelay, config.abrBandWidthFactor, config.abrBandWidthUpFactor, levels);
if (bestLevel >= 0) {
return bestLevel;
} else {
logger["b" /* logger */].trace('rebuffering expected to happen, lets try to find a quality level minimizing the rebuffering');
// not possible to get rid of rebuffering ... let's try to find level that will guarantee less than maxStarvationDelay of rebuffering
// if no matching level found, logic will return 0
var maxStarvationDelay = currentFragDuration ? Math.min(currentFragDuration, config.maxStarvationDelay) : config.maxStarvationDelay,
bwFactor = config.abrBandWidthFactor,
bwUpFactor = config.abrBandWidthUpFactor;
if (bufferStarvationDelay === 0) {
// in case buffer is empty, let's check if previous fragment was loaded to perform a bitrate test
var bitrateTestDelay = this.bitrateTestDelay;
if (bitrateTestDelay) {
// if it is the case, then we need to adjust our max starvation delay using maxLoadingDelay config value
// max video loading delay used in automatic start level selection :
// in that mode ABR controller will ensure that video loading time (ie the time to fetch the first fragment at lowest quality level +
// the time to fetch the fragment at the appropriate quality level is less than ```maxLoadingDelay``` )
// cap maxLoadingDelay and ensure it is not bigger 'than bitrate test' frag duration
var maxLoadingDelay = currentFragDuration ? Math.min(currentFragDuration, config.maxLoadingDelay) : config.maxLoadingDelay;
maxStarvationDelay = maxLoadingDelay - bitrateTestDelay;
logger["b" /* logger */].trace('bitrate test took ' + Math.round(1000 * bitrateTestDelay) + 'ms, set first fragment max fetchDuration to ' + Math.round(1000 * maxStarvationDelay) + ' ms');
// don't use conservative factor on bitrate test
bwFactor = bwUpFactor = 1;
}
}
bestLevel = this._findBestLevel(currentLevel, currentFragDuration, avgbw, minAutoLevel, maxAutoLevel, bufferStarvationDelay + maxStarvationDelay, bwFactor, bwUpFactor, levels);
return Math.max(bestLevel, 0);
}
}
}]);
return AbrController;
}(event_handler);
/* harmony default export */ var abr_controller = (abr_controller_AbrController);
// CONCATENATED MODULE: ./src/controller/buffer-controller.js
function buffer_controller__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function buffer_controller__possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call :...
function buffer_controller__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 = Ob...
/*
* Buffer Controller
*/
var buffer_controller_MediaSource = getMediaSource();
var buffer_controller_BufferController = function (_EventHandler) {
buffer_controller__inherits(BufferController, _EventHandler);
function BufferController(hls) {
buffer_controller__classCallCheck(this, BufferController);
// the value that we have set mediasource.duration to
// (the actual duration may be tweaked slighly by the browser)
var _this = buffer_controller__possibleConstructorReturn(this, _EventHandler.call(this, hls, events["a" /* default */].MEDIA_ATTACHING, events["a" /* default */].MEDIA_DETACHING, events["a" /* default */].MANIFEST_PARSED, events["a" /* default */...
_this._msDuration = null;
// the value that we want to set mediaSource.duration to
_this._levelDuration = null;
// current stream state: true - for live broadcast, false - for VoD content
_this._live = null;
// cache the self generated object url to detect hijack of video tag
_this._objectUrl = null;
// Source Buffer listeners
_this.onsbue = _this.onSBUpdateEnd.bind(_this);
_this.onsbe = _this.onSBUpdateError.bind(_this);
_this.pendingTracks = {};
_this.tracks = {};
return _this;
}
BufferController.prototype.destroy = function destroy() {
share/public_html/static/hls.js view on Meta::CPAN
this.hls.trigger(events["a" /* default */].MEDIA_DETACHED);
};
BufferController.prototype.onMediaSourceOpen = function onMediaSourceOpen() {
logger["b" /* logger */].log('media source opened');
this.hls.trigger(events["a" /* default */].MEDIA_ATTACHED, { media: this.media });
var mediaSource = this.mediaSource;
if (mediaSource) {
// once received, don't listen anymore to sourceopen event
mediaSource.removeEventListener('sourceopen', this.onmso);
}
this.checkPendingTracks();
};
BufferController.prototype.checkPendingTracks = function checkPendingTracks() {
// if any buffer codecs pending, check if we have enough to create sourceBuffers
var pendingTracks = this.pendingTracks,
pendingTracksNb = Object.keys(pendingTracks).length;
// if any pending tracks and (if nb of pending tracks gt or equal than expected nb or if unknown expected nb)
if (pendingTracksNb && (this.sourceBufferNb <= pendingTracksNb || this.sourceBufferNb === 0)) {
// ok, let's create them now !
this.createSourceBuffers(pendingTracks);
this.pendingTracks = {};
// append any pending segments now !
this.doAppending();
}
};
BufferController.prototype.onMediaSourceClose = function onMediaSourceClose() {
logger["b" /* logger */].log('media source closed');
};
BufferController.prototype.onMediaSourceEnded = function onMediaSourceEnded() {
logger["b" /* logger */].log('media source ended');
};
BufferController.prototype.onSBUpdateEnd = function onSBUpdateEnd() {
// update timestampOffset
if (this.audioTimestampOffset) {
var audioBuffer = this.sourceBuffer.audio;
logger["b" /* logger */].warn('change mpeg audio timestamp offset from ' + audioBuffer.timestampOffset + ' to ' + this.audioTimestampOffset);
audioBuffer.timestampOffset = this.audioTimestampOffset;
delete this.audioTimestampOffset;
}
if (this._needsFlush) {
this.doFlush();
}
if (this._needsEos) {
this.checkEos();
}
this.appending = false;
var parent = this.parent;
// count nb of pending segments waiting for appending on this sourcebuffer
var pending = this.segments.reduce(function (counter, segment) {
return segment.parent === parent ? counter + 1 : counter;
}, 0);
// this.sourceBuffer is better to use than media.buffered as it is closer to the PTS data from the fragments
var timeRanges = {};
var sourceBuffer = this.sourceBuffer;
for (var streamType in sourceBuffer) {
timeRanges[streamType] = sourceBuffer[streamType].buffered;
}
this.hls.trigger(events["a" /* default */].BUFFER_APPENDED, { parent: parent, pending: pending, timeRanges: timeRanges });
// don't append in flushing mode
if (!this._needsFlush) {
this.doAppending();
}
this.updateMediaElementDuration();
};
BufferController.prototype.onSBUpdateError = function onSBUpdateError(event) {
logger["b" /* logger */].error('sourceBuffer error:', event);
// according to http://www.w3.org/TR/media-source/#sourcebuffer-append-error
// this error might not always be fatal (it is fatal if decode error is set, in that case
// it will be followed by a mediaElement error ...)
this.hls.trigger(events["a" /* default */].ERROR, { type: errors["b" /* ErrorTypes */].MEDIA_ERROR, details: errors["a" /* ErrorDetails */].BUFFER_APPENDING_ERROR, fatal: false });
// we don't need to do more than that, as accordin to the spec, updateend will be fired just after
};
BufferController.prototype.onBufferReset = function onBufferReset() {
var sourceBuffer = this.sourceBuffer;
for (var type in sourceBuffer) {
var sb = sourceBuffer[type];
try {
this.mediaSource.removeSourceBuffer(sb);
sb.removeEventListener('updateend', this.onsbue);
sb.removeEventListener('error', this.onsbe);
} catch (err) {}
}
this.sourceBuffer = {};
this.flushRange = [];
this.segments = [];
this.appended = 0;
};
BufferController.prototype.onBufferCodecs = function onBufferCodecs(tracks) {
// if source buffer(s) not created yet, appended buffer tracks in this.pendingTracks
// if sourcebuffers already created, do nothing ...
if (Object.keys(this.sourceBuffer).length === 0) {
for (var trackName in tracks) {
this.pendingTracks[trackName] = tracks[trackName];
}var mediaSource = this.mediaSource;
if (mediaSource && mediaSource.readyState === 'open') {
// try to create sourcebuffers if mediasource opened
this.checkPendingTracks();
}
}
};
BufferController.prototype.createSourceBuffers = function createSourceBuffers(tracks) {
var sourceBuffer = this.sourceBuffer,
mediaSource = this.mediaSource;
for (var trackName in tracks) {
if (!sourceBuffer[trackName]) {
share/public_html/static/hls.js view on Meta::CPAN
};
BufferController.prototype.onBufferAppending = function onBufferAppending(data) {
if (!this._needsFlush) {
if (!this.segments) {
this.segments = [data];
} else {
this.segments.push(data);
}
this.doAppending();
}
};
BufferController.prototype.onBufferAppendFail = function onBufferAppendFail(data) {
logger["b" /* logger */].error('sourceBuffer error:', data.event);
// according to http://www.w3.org/TR/media-source/#sourcebuffer-append-error
// this error might not always be fatal (it is fatal if decode error is set, in that case
// it will be followed by a mediaElement error ...)
this.hls.trigger(events["a" /* default */].ERROR, { type: errors["b" /* ErrorTypes */].MEDIA_ERROR, details: errors["a" /* ErrorDetails */].BUFFER_APPENDING_ERROR, fatal: false });
};
// on BUFFER_EOS mark matching sourcebuffer(s) as ended and trigger checkEos()
BufferController.prototype.onBufferEos = function onBufferEos(data) {
var sb = this.sourceBuffer;
var dataType = data.type;
for (var type in sb) {
if (!dataType || type === dataType) {
if (!sb[type].ended) {
sb[type].ended = true;
logger["b" /* logger */].log(type + ' sourceBuffer now EOS');
}
}
}
this.checkEos();
};
// if all source buffers are marked as ended, signal endOfStream() to MediaSource.
BufferController.prototype.checkEos = function checkEos() {
var sb = this.sourceBuffer,
mediaSource = this.mediaSource;
if (!mediaSource || mediaSource.readyState !== 'open') {
this._needsEos = false;
return;
}
for (var type in sb) {
var sbobj = sb[type];
if (!sbobj.ended) {
return;
}
if (sbobj.updating) {
this._needsEos = true;
return;
}
}
logger["b" /* logger */].log('all media data available, signal endOfStream() to MediaSource and stop loading fragment');
// Notify the media element that it now has all of the media data
try {
mediaSource.endOfStream();
} catch (e) {
logger["b" /* logger */].warn('exception while calling mediaSource.endOfStream()');
}
this._needsEos = false;
};
BufferController.prototype.onBufferFlushing = function onBufferFlushing(data) {
this.flushRange.push({ start: data.startOffset, end: data.endOffset, type: data.type });
// attempt flush immediately
this.flushBufferCounter = 0;
this.doFlush();
};
BufferController.prototype.onLevelUpdated = function onLevelUpdated(_ref) {
var details = _ref.details;
if (details.fragments.length > 0) {
this._levelDuration = details.totalduration + details.fragments[0].start;
this._live = details.live;
this.updateMediaElementDuration();
}
};
/**
* Update Media Source duration to current level duration or override to Infinity if configuration parameter
* 'liveDurationInfinity` is set to `true`
* More details: https://github.com/video-dev/hls.js/issues/355
*/
BufferController.prototype.updateMediaElementDuration = function updateMediaElementDuration() {
var config = this.hls.config;
var duration = void 0;
if (this._levelDuration === null || !this.media || !this.mediaSource || !this.sourceBuffer || this.media.readyState === 0 || this.mediaSource.readyState !== 'open') {
return;
}
for (var type in this.sourceBuffer) {
if (this.sourceBuffer[type].updating === true) {
// can't set duration whilst a buffer is updating
return;
}
}
duration = this.media.duration;
// initialise to the value that the media source is reporting
if (this._msDuration === null) {
this._msDuration = this.mediaSource.duration;
}
if (this._live === true && config.liveDurationInfinity === true) {
// Override duration to Infinity
logger["b" /* logger */].log('Media Source duration is set to Infinity');
this._msDuration = this.mediaSource.duration = Infinity;
} else if (this._levelDuration > this._msDuration && this._levelDuration > duration || duration === Infinity || isNaN(duration)) {
// levelDuration was the last value we set.
// not using mediaSource.duration as the browser may tweak this value
// only update Media Source duration if its value increase, this is to avoid
// flushing already buffered portion when switching between quality level
logger["b" /* logger */].log('Updating Media Source duration to ' + this._levelDuration.toFixed(3));
this._msDuration = this.mediaSource.duration = this._levelDuration;
}
};
BufferController.prototype.doFlush = function doFlush() {
// loop through all buffer ranges to flush
while (this.flushRange.length) {
var range = this.flushRange[0];
// flushBuffer will abort any buffer append in progress and flush Audio/Video Buffer
if (this.flushBuffer(range.start, range.end, range.type)) {
// range flushed, remove from flush array
this.flushRange.shift();
this.flushBufferCounter = 0;
} else {
this._needsFlush = true;
// avoid looping, wait for SB update end to retrigger a flush
share/public_html/static/hls.js view on Meta::CPAN
this.hls.trigger(events["a" /* default */].AUDIO_TRACK_SWITCHING, { id: id, type: type, url: url });
this._loadTrackDetailsIfNeeded(audioTrack);
}
}]);
return AudioTrackController;
}(task_loop);
/* harmony default export */ var audio_track_controller = (audio_track_controller_AudioTrackController);
// CONCATENATED MODULE: ./src/controller/audio-stream-controller.js
var audio_stream_controller__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 = ...
function audio_stream_controller__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function audio_stream_controller__possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? ...
function audio_stream_controller__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.prototyp...
/*
* Audio Stream Controller
*/
var audio_stream_controller__window = window,
audio_stream_controller_performance = audio_stream_controller__window.performance;
var audio_stream_controller_State = {
STOPPED: 'STOPPED',
STARTING: 'STARTING',
IDLE: 'IDLE',
PAUSED: 'PAUSED',
KEY_LOADING: 'KEY_LOADING',
FRAG_LOADING: 'FRAG_LOADING',
FRAG_LOADING_WAITING_RETRY: 'FRAG_LOADING_WAITING_RETRY',
WAITING_TRACK: 'WAITING_TRACK',
PARSING: 'PARSING',
PARSED: 'PARSED',
BUFFER_FLUSHING: 'BUFFER_FLUSHING',
ENDED: 'ENDED',
ERROR: 'ERROR',
WAITING_INIT_PTS: 'WAITING_INIT_PTS'
};
var audio_stream_controller_AudioStreamController = function (_TaskLoop) {
audio_stream_controller__inherits(AudioStreamController, _TaskLoop);
function AudioStreamController(hls, fragmentTracker) {
audio_stream_controller__classCallCheck(this, AudioStreamController);
var _this = audio_stream_controller__possibleConstructorReturn(this, _TaskLoop.call(this, hls, events["a" /* default */].MEDIA_ATTACHED, events["a" /* default */].MEDIA_DETACHING, events["a" /* default */].AUDIO_TRACKS_UPDATED, events["a" /* defa...
_this.fragmentTracker = fragmentTracker;
_this.config = hls.config;
_this.audioCodecSwap = false;
_this._state = audio_stream_controller_State.STOPPED;
_this.initPTS = [];
_this.waitingFragment = null;
_this.videoTrackCC = null;
return _this;
}
AudioStreamController.prototype.onHandlerDestroying = function onHandlerDestroying() {
this.stopLoad();
_TaskLoop.prototype.onHandlerDestroying.call(this);
};
AudioStreamController.prototype.onHandlerDestroyed = function onHandlerDestroyed() {
this.state = audio_stream_controller_State.STOPPED;
this.fragmentTracker = null;
_TaskLoop.prototype.onHandlerDestroyed.call(this);
};
// Signal that video PTS was found
AudioStreamController.prototype.onInitPtsFound = function onInitPtsFound(data) {
var demuxerId = data.id,
cc = data.frag.cc,
initPTS = data.initPTS;
if (demuxerId === 'main') {
// Always update the new INIT PTS
// Can change due level switch
this.initPTS[cc] = initPTS;
this.videoTrackCC = cc;
logger["b" /* logger */].log('InitPTS for cc: ' + cc + ' found from video track: ' + initPTS);
// If we are waiting we need to demux/remux the waiting frag
// With the new initPTS
if (this.state === audio_stream_controller_State.WAITING_INIT_PTS) {
this.tick();
}
}
};
AudioStreamController.prototype.startLoad = function startLoad(startPosition) {
if (this.tracks) {
var lastCurrentTime = this.lastCurrentTime;
this.stopLoad();
this.setInterval(100);
this.fragLoadError = 0;
if (lastCurrentTime > 0 && startPosition === -1) {
logger["b" /* logger */].log('audio:override startPosition with lastCurrentTime @' + lastCurrentTime.toFixed(3));
this.state = audio_stream_controller_State.IDLE;
} else {
this.lastCurrentTime = this.startPosition ? this.startPosition : startPosition;
this.state = audio_stream_controller_State.STARTING;
}
this.nextLoadPosition = this.startPosition = this.lastCurrentTime;
this.tick();
} else {
this.startPosition = startPosition;
this.state = audio_stream_controller_State.STOPPED;
}
};
AudioStreamController.prototype.stopLoad = function stopLoad() {
var frag = this.fragCurrent;
if (frag) {
if (frag.loader) {
frag.loader.abort();
}
this.fragmentTracker.removeFragment(frag);
this.fragCurrent = null;
}
this.fragPrevious = null;
if (this.demuxer) {
this.demuxer.destroy();
this.demuxer = null;
}
this.state = audio_stream_controller_State.STOPPED;
};
AudioStreamController.prototype.doTick = function doTick() {
var pos = void 0,
track = void 0,
trackDetails = void 0,
hls = this.hls,
config = hls.config;
// logger.log('audioStream:' + this.state);
switch (this.state) {
case audio_stream_controller_State.ERROR:
// don't do anything in error state to avoid breaking further ...
case audio_stream_controller_State.PAUSED:
// don't do anything in paused state either ...
case audio_stream_controller_State.BUFFER_FLUSHING:
break;
case audio_stream_controller_State.STARTING:
this.state = audio_stream_controller_State.WAITING_TRACK;
this.loadedmetadata = false;
break;
case audio_stream_controller_State.IDLE:
var tracks = this.tracks;
// audio tracks not received => exit loop
if (!tracks) {
break;
}
// if video not attached AND
// start fragment already requested OR start frag prefetch disable
// exit loop
// => if media not attached but start frag prefetch is enabled and start frag not requested yet, we will not exit loop
if (!this.media && (this.startFragRequested || !config.startFragPrefetch)) {
break;
}
// determine next candidate fragment to be loaded, based on current position and
// end of buffer position
// if we have not yet loaded any fragment, start loading from start position
if (this.loadedmetadata) {
pos = this.media.currentTime;
} else {
pos = this.nextLoadPosition;
if (pos === undefined) {
break;
}
}
var media = this.mediaBuffer ? this.mediaBuffer : this.media,
videoBuffer = this.videoBuffer ? this.videoBuffer : this.media,
bufferInfo = BufferHelper.bufferInfo(media, pos, config.maxBufferHole),
mainBufferInfo = BufferHelper.bufferInfo(videoBuffer, pos, config.maxBufferHole),
bufferLen = bufferInfo.len,
bufferEnd = bufferInfo.end,
fragPrevious = this.fragPrevious,
// ensure we buffer at least config.maxBufferLength (default 30s) or config.maxMaxBufferLength (default: 600s)
// whichever is smaller.
// once we reach that threshold, don't buffer more than video (mainBufferInfo.len)
maxConfigBuffer = Math.min(config.maxBufferLength, config.maxMaxBufferLength),
maxBufLen = Math.max(maxConfigBuffer, mainBufferInfo.len),
audioSwitch = this.audioSwitch,
trackId = this.trackId;
// if buffer length is less than maxBufLen try to load a new fragment
if ((bufferLen < maxBufLen || audioSwitch) && trackId < tracks.length) {
trackDetails = tracks[trackId].details;
// if track info not retrieved yet, switch state and wait for track retrieval
if (typeof trackDetails === 'undefined') {
this.state = audio_stream_controller_State.WAITING_TRACK;
break;
}
// check if we need to finalize media stream
// we just got done loading the final fragment and there is no other buffered range after ...
// rationale is that in case there are any buffered ranges after, it means that there are unbuffered portion in between
// so we should not switch to ENDED in that case, to be able to buffer them
if (!audioSwitch && !trackDetails.live && fragPrevious && fragPrevious.sn === trackDetails.endSN && !bufferInfo.nextStart) {
// if we are not seeking or if we are seeking but everything (almost) til the end is buffered, let's signal eos
// we don't compare exactly media.duration === bufferInfo.end as there could be some subtle media duration difference when switching
// between different renditions. using half frag duration should help cope with these cases.
if (!this.media.seeking || this.media.duration - bufferEnd < fragPrevious.duration / 2) {
// Finalize the media stream
this.hls.trigger(events["a" /* default */].BUFFER_EOS, { type: 'audio' });
this.state = audio_stream_controller_State.ENDED;
break;
}
}
// find fragment index, contiguous with end of buffer position
var fragments = trackDetails.fragments,
fragLen = fragments.length,
start = fragments[0].start,
end = fragments[fragLen - 1].start + fragments[fragLen - 1].duration,
frag = void 0;
// When switching audio track, reload audio as close as possible to currentTime
if (audioSwitch) {
if (trackDetails.live && !trackDetails.PTSKnown) {
logger["b" /* logger */].log('switching audiotrack, live stream, unknown PTS,load first fragment');
bufferEnd = 0;
} else {
bufferEnd = pos;
// if currentTime (pos) is less than alt audio playlist start time, it means that alt audio is ahead of currentTime
if (trackDetails.PTSKnown && pos < start) {
// if everything is buffered from pos to start or if audio buffer upfront, let's seek to start
if (bufferInfo.end > start || bufferInfo.nextStart) {
logger["b" /* logger */].log('alt audio track ahead of main track, seek to start of alt audio track');
this.media.currentTime = start + 0.05;
} else {
return;
}
}
}
}
if (trackDetails.initSegment && !trackDetails.initSegment.data) {
frag = trackDetails.initSegment;
} // eslint-disable-line brace-style
// if bufferEnd before start of playlist, load first fragment
else if (bufferEnd <= start) {
frag = fragments[0];
if (this.videoTrackCC !== null && frag.cc !== this.videoTrackCC) {
// Ensure we find a fragment which matches the continuity of the video track
frag = findFragWithCC(fragments, this.videoTrackCC);
}
if (trackDetails.live && frag.loadIdx && frag.loadIdx === this.fragLoadIdx) {
// we just loaded this first fragment, and we are still lagging behind the start of the live playlist
// let's force seek to start
var nextBuffered = bufferInfo.nextStart ? bufferInfo.nextStart : start;
logger["b" /* logger */].log('no alt audio available @currentTime:' + this.media.currentTime + ', seeking @' + (nextBuffered + 0.05));
this.media.currentTime = nextBuffered + 0.05;
return;
}
} else {
var foundFrag = void 0;
var maxFragLookUpTolerance = config.maxFragLookUpTolerance;
var fragNext = fragPrevious ? fragments[fragPrevious.sn - fragments[0].sn + 1] : undefined;
var fragmentWithinToleranceTest = function fragmentWithinToleranceTest(candidate) {
// offset should be within fragment boundary - config.maxFragLookUpTolerance
// this is to cope with situations like
// bufferEnd = 9.991
// frag[Ø] : [0,10]
// frag[1] : [10,20]
// bufferEnd is within frag[0] range ... although what we are expecting is to return frag[1] here
// frag start frag start+duration
// |-----------------------------|
// <---> <--->
// ...--------><-----------------------------><---------....
// previous frag matching fragment next frag
// return -1 return 0 return 1
// logger.log(`level/sn/start/end/bufEnd:${level}/${candidate.sn}/${candidate.start}/${(candidate.start+candidate.duration)}/${bufferEnd}`);
// Set the lookup tolerance to be small enough to detect the current segment - ensures we don't skip over very small segments
var candidateLookupTolerance = Math.min(maxFragLookUpTolerance, candidate.duration);
if (candidate.start + candidate.duration - candidateLookupTolerance <= bufferEnd) {
return 1;
} else if (candidate.start - candidateLookupTolerance > bufferEnd && candidate.start) {
// if maxFragLookUpTolerance will have negative value then don't return -1 for first element
return -1;
}
return 0;
};
if (bufferEnd < end) {
if (bufferEnd > end - maxFragLookUpTolerance) {
maxFragLookUpTolerance = 0;
}
// Prefer the next fragment if it's within tolerance
if (fragNext && !fragmentWithinToleranceTest(fragNext)) {
foundFrag = fragNext;
} else {
foundFrag = binary_search.search(fragments, fragmentWithinToleranceTest);
}
} else {
// reach end of playlist
foundFrag = fragments[fragLen - 1];
}
if (foundFrag) {
frag = foundFrag;
start = foundFrag.start;
// logger.log('find SN matching with pos:' + bufferEnd + ':' + frag.sn);
if (fragPrevious && frag.level === fragPrevious.level && frag.sn === fragPrevious.sn) {
if (frag.sn < trackDetails.endSN) {
frag = fragments[frag.sn + 1 - trackDetails.startSN];
logger["b" /* logger */].log('SN just loaded, load next one: ' + frag.sn);
} else {
frag = null;
}
}
}
}
if (frag) {
// logger.log(' loading frag ' + i +',pos/bufEnd:' + pos.toFixed(3) + '/' + bufferEnd.toFixed(3));
if (frag.encrypted) {
logger["b" /* logger */].log('Loading key for ' + frag.sn + ' of [' + trackDetails.startSN + ' ,' + trackDetails.endSN + '],track ' + trackId);
this.state = audio_stream_controller_State.KEY_LOADING;
hls.trigger(events["a" /* default */].KEY_LOADING, { frag: frag });
} else {
logger["b" /* logger */].log('Loading ' + frag.sn + ', cc: ' + frag.cc + ' of [' + trackDetails.startSN + ' ,' + trackDetails.endSN + '],track ' + trackId + ', currentTime:' + pos + ',bufferEnd:' + bufferEnd.toFixed(3));
// only load if fragment is not loaded or if in audio switch
// we force a frag loading in audio switch as fragment tracker might not have evicted previous frags in case of quick audio switch
if (audioSwitch || this.fragmentTracker.getState(frag) === FragmentState.NOT_LOADED) {
this.fragCurrent = frag;
this.startFragRequested = true;
if (!isNaN(frag.sn)) {
this.nextLoadPosition = frag.start + frag.duration;
}
hls.trigger(events["a" /* default */].FRAG_LOADING, { frag: frag });
this.state = audio_stream_controller_State.FRAG_LOADING;
}
}
}
}
break;
case audio_stream_controller_State.WAITING_TRACK:
track = this.tracks[this.trackId];
// check if playlist is already loaded
if (track && track.details) {
this.state = audio_stream_controller_State.IDLE;
}
break;
case audio_stream_controller_State.FRAG_LOADING_WAITING_RETRY:
var now = audio_stream_controller_performance.now();
var retryDate = this.retryDate;
media = this.media;
var isSeeking = media && media.seeking;
// if current time is gt than retryDate, or if media seeking let's switch to IDLE state to retry loading
if (!retryDate || now >= retryDate || isSeeking) {
logger["b" /* logger */].log('audioStreamController: retryDate reached, switch back to IDLE state');
this.state = audio_stream_controller_State.IDLE;
}
break;
case audio_stream_controller_State.WAITING_INIT_PTS:
var videoTrackCC = this.videoTrackCC;
if (this.initPTS[videoTrackCC] === undefined) {
break;
}
// Ensure we don't get stuck in the WAITING_INIT_PTS state if the waiting frag CC doesn't match any initPTS
var waitingFrag = this.waitingFragment;
if (waitingFrag) {
var waitingFragCC = waitingFrag.frag.cc;
if (videoTrackCC !== waitingFragCC) {
track = this.tracks[this.trackId];
if (track.details && track.details.live) {
logger["b" /* logger */].warn('Waiting fragment CC (' + waitingFragCC + ') does not match video track CC (' + videoTrackCC + ')');
this.waitingFragment = null;
this.state = audio_stream_controller_State.IDLE;
}
} else {
this.state = audio_stream_controller_State.FRAG_LOADING;
this.onFragLoaded(this.waitingFragment);
this.waitingFragment = null;
}
} else {
this.state = audio_stream_controller_State.IDLE;
}
break;
case audio_stream_controller_State.STOPPED:
case audio_stream_controller_State.FRAG_LOADING:
case audio_stream_controller_State.PARSING:
case audio_stream_controller_State.PARSED:
case audio_stream_controller_State.ENDED:
break;
default:
break;
}
};
AudioStreamController.prototype.onMediaAttached = function onMediaAttached(data) {
var media = this.media = this.mediaBuffer = data.media;
this.onvseeking = this.onMediaSeeking.bind(this);
this.onvended = this.onMediaEnded.bind(this);
media.addEventListener('seeking', this.onvseeking);
media.addEventListener('ended', this.onvended);
var config = this.config;
if (this.tracks && config.autoStartLoad) {
this.startLoad(config.startPosition);
}
};
AudioStreamController.prototype.onMediaDetaching = function onMediaDetaching() {
var media = this.media;
if (media && media.ended) {
logger["b" /* logger */].log('MSE detaching and video ended, reset startPosition');
this.startPosition = this.lastCurrentTime = 0;
}
// remove video listeners
if (media) {
media.removeEventListener('seeking', this.onvseeking);
media.removeEventListener('ended', this.onvended);
this.onvseeking = this.onvseeked = this.onvended = null;
}
this.media = this.mediaBuffer = this.videoBuffer = null;
this.loadedmetadata = false;
this.stopLoad();
};
AudioStreamController.prototype.onMediaSeeking = function onMediaSeeking() {
if (this.state === audio_stream_controller_State.ENDED) {
// switch to IDLE state to check for potential new fragment
this.state = audio_stream_controller_State.IDLE;
}
if (this.media) {
this.lastCurrentTime = this.media.currentTime;
}
// tick to speed up processing
this.tick();
};
AudioStreamController.prototype.onMediaEnded = function onMediaEnded() {
// reset startPosition and lastCurrentTime to restart playback @ stream beginning
this.startPosition = this.lastCurrentTime = 0;
};
AudioStreamController.prototype.onAudioTracksUpdated = function onAudioTracksUpdated(data) {
logger["b" /* logger */].log('audio tracks updated');
this.tracks = data.audioTracks;
};
AudioStreamController.prototype.onAudioTrackSwitching = function onAudioTrackSwitching(data) {
// if any URL found on new audio track, it is an alternate audio track
var altAudio = !!data.url;
this.trackId = data.id;
this.fragCurrent = null;
this.state = audio_stream_controller_State.PAUSED;
this.waitingFragment = null;
// destroy useless demuxer when switching audio to main
if (!altAudio) {
if (this.demuxer) {
this.demuxer.destroy();
this.demuxer = null;
}
} else {
// switching to audio track, start timer if not already started
this.setInterval(100);
}
// should we switch tracks ?
if (altAudio) {
this.audioSwitch = true;
// main audio track are handled by stream-controller, just do something if switching to alt audio track
this.state = audio_stream_controller_State.IDLE;
}
this.tick();
};
AudioStreamController.prototype.onAudioTrackLoaded = function onAudioTrackLoaded(data) {
var newDetails = data.details,
trackId = data.id,
track = this.tracks[trackId],
duration = newDetails.totalduration,
sliding = 0;
logger["b" /* logger */].log('track ' + trackId + ' loaded [' + newDetails.startSN + ',' + newDetails.endSN + '],duration:' + duration);
if (newDetails.live) {
var curDetails = track.details;
if (curDetails && newDetails.fragments.length > 0) {
// we already have details for that level, merge them
mergeDetails(curDetails, newDetails);
sliding = newDetails.fragments[0].start;
// TODO
// this.liveSyncPosition = this.computeLivePosition(sliding, curDetails);
if (newDetails.PTSKnown) {
logger["b" /* logger */].log('live audio playlist sliding:' + sliding.toFixed(3));
} else {
logger["b" /* logger */].log('live audio playlist - outdated PTS, unknown sliding');
}
} else {
newDetails.PTSKnown = false;
logger["b" /* logger */].log('live audio playlist - first load, unknown sliding');
}
} else {
newDetails.PTSKnown = false;
}
track.details = newDetails;
// compute start position
if (!this.startFragRequested) {
// compute start position if set to -1. use it straight away if value is defined
if (this.startPosition === -1) {
// first, check if start time offset has been set in playlist, if yes, use this value
var startTimeOffset = newDetails.startTimeOffset;
if (!isNaN(startTimeOffset)) {
logger["b" /* logger */].log('start time offset found in playlist, adjust startPosition to ' + startTimeOffset);
this.startPosition = startTimeOffset;
} else {
this.startPosition = 0;
}
}
this.nextLoadPosition = this.startPosition;
}
// only switch batck to IDLE state if we were waiting for track to start downloading a new fragment
if (this.state === audio_stream_controller_State.WAITING_TRACK) {
this.state = audio_stream_controller_State.IDLE;
}
// trigger handler right now
this.tick();
};
AudioStreamController.prototype.onKeyLoaded = function onKeyLoaded() {
if (this.state === audio_stream_controller_State.KEY_LOADING) {
this.state = audio_stream_controller_State.IDLE;
this.tick();
}
};
AudioStreamController.prototype.onFragLoaded = function onFragLoaded(data) {
var fragCurrent = this.fragCurrent,
fragLoaded = data.frag;
if (this.state === audio_stream_controller_State.FRAG_LOADING && fragCurrent && fragLoaded.type === 'audio' && fragLoaded.level === fragCurrent.level && fragLoaded.sn === fragCurrent.sn) {
var track = this.tracks[this.trackId],
details = track.details,
duration = details.totalduration,
trackId = fragCurrent.level,
sn = fragCurrent.sn,
cc = fragCurrent.cc,
audioCodec = this.config.defaultAudioCodec || track.audioCodec || 'mp4a.40.2',
stats = this.stats = data.stats;
if (sn === 'initSegment') {
this.state = audio_stream_controller_State.IDLE;
stats.tparsed = stats.tbuffered = audio_stream_controller_performance.now();
details.initSegment.data = data.payload;
this.hls.trigger(events["a" /* default */].FRAG_BUFFERED, { stats: stats, frag: fragCurrent, id: 'audio' });
this.tick();
} else {
this.state = audio_stream_controller_State.PARSING;
// transmux the MPEG-TS data to ISO-BMFF segments
this.appended = false;
if (!this.demuxer) {
this.demuxer = new demux_demuxer(this.hls, 'audio');
}
// Check if we have video initPTS
// If not we need to wait for it
var initPTS = this.initPTS[cc];
var initSegmentData = details.initSegment ? details.initSegment.data : [];
if (details.initSegment || initPTS !== undefined) {
this.pendingBuffering = true;
logger["b" /* logger */].log('Demuxing ' + sn + ' of [' + details.startSN + ' ,' + details.endSN + '],track ' + trackId);
// time Offset is accurate if level PTS is known, or if playlist is not sliding (not live)
var accurateTimeOffset = false; // details.PTSKnown || !details.live;
this.demuxer.push(data.payload, initSegmentData, audioCodec, null, fragCurrent, duration, accurateTimeOffset, initPTS);
} else {
logger["b" /* logger */].log('unknown video PTS for continuity counter ' + cc + ', waiting for video PTS before demuxing audio frag ' + sn + ' of [' + details.startSN + ' ,' + details.endSN + '],track ' + trackId);
this.waitingFragment = data;
this.state = audio_stream_controller_State.WAITING_INIT_PTS;
}
}
}
this.fragLoadError = 0;
};
AudioStreamController.prototype.onFragParsingInitSegment = function onFragParsingInitSegment(data) {
var fragCurrent = this.fragCurrent;
var fragNew = data.frag;
if (fragCurrent && data.id === 'audio' && fragNew.sn === fragCurrent.sn && fragNew.level === fragCurrent.level && this.state === audio_stream_controller_State.PARSING) {
var tracks = data.tracks,
track = void 0;
// delete any video track found on audio demuxer
if (tracks.video) {
delete tracks.video;
}
// include levelCodec in audio and video tracks
track = tracks.audio;
if (track) {
track.levelCodec = track.codec;
track.id = data.id;
this.hls.trigger(events["a" /* default */].BUFFER_CODECS, tracks);
logger["b" /* logger */].log('audio track:audio,container:' + track.container + ',codecs[level/parsed]=[' + track.levelCodec + '/' + track.codec + ']');
var initSegment = track.initSegment;
if (initSegment) {
var appendObj = { type: 'audio', data: initSegment, parent: 'audio', content: 'initSegment' };
if (this.audioSwitch) {
this.pendingData = [appendObj];
} else {
this.appended = true;
// arm pending Buffering flag before appending a segment
this.pendingBuffering = true;
this.hls.trigger(events["a" /* default */].BUFFER_APPENDING, appendObj);
}
}
// trigger handler right now
this.tick();
}
}
};
AudioStreamController.prototype.onFragParsingData = function onFragParsingData(data) {
var _this2 = this;
var fragCurrent = this.fragCurrent;
var fragNew = data.frag;
if (fragCurrent && data.id === 'audio' && data.type === 'audio' && fragNew.sn === fragCurrent.sn && fragNew.level === fragCurrent.level && this.state === audio_stream_controller_State.PARSING) {
var trackId = this.trackId,
track = this.tracks[trackId],
hls = this.hls;
if (isNaN(data.endPTS)) {
data.endPTS = data.startPTS + fragCurrent.duration;
data.endDTS = data.startDTS + fragCurrent.duration;
}
fragCurrent.addElementaryStream(loader_fragment.ElementaryStreamTypes.AUDIO);
logger["b" /* logger */].log('parsed ' + data.type + ',PTS:[' + data.startPTS.toFixed(3) + ',' + data.endPTS.toFixed(3) + '],DTS:[' + data.startDTS.toFixed(3) + '/' + data.endDTS.toFixed(3) + '],nb:' + data.nb);
updateFragPTSDTS(track.details, fragCurrent, data.startPTS, data.endPTS);
var audioSwitch = this.audioSwitch,
media = this.media,
appendOnBufferFlush = false;
// Only flush audio from old audio tracks when PTS is known on new audio track
if (audioSwitch && media) {
if (media.readyState) {
var currentTime = media.currentTime;
logger["b" /* logger */].log('switching audio track : currentTime:' + currentTime);
if (currentTime >= data.startPTS) {
logger["b" /* logger */].log('switching audio track : flushing all audio');
this.state = audio_stream_controller_State.BUFFER_FLUSHING;
hls.trigger(events["a" /* default */].BUFFER_FLUSHING, { startOffset: 0, endOffset: Number.POSITIVE_INFINITY, type: 'audio' });
appendOnBufferFlush = true;
// Lets announce that the initial audio track switch flush occur
this.audioSwitch = false;
hls.trigger(events["a" /* default */].AUDIO_TRACK_SWITCHED, { id: trackId });
}
} else {
// Lets announce that the initial audio track switch flush occur
this.audioSwitch = false;
hls.trigger(events["a" /* default */].AUDIO_TRACK_SWITCHED, { id: trackId });
}
}
var pendingData = this.pendingData;
if (!pendingData) {
logger["b" /* logger */].warn('Apparently attempt to enqueue media payload without codec initialization data upfront');
hls.trigger(events["a" /* default */].ERROR, { type: errors["b" /* ErrorTypes */].MEDIA_ERROR, details: null, fatal: true });
return;
}
if (!this.audioSwitch) {
[data.data1, data.data2].forEach(function (buffer) {
if (buffer && buffer.length) {
pendingData.push({ type: data.type, data: buffer, parent: 'audio', content: 'data' });
}
});
if (!appendOnBufferFlush && pendingData.length) {
pendingData.forEach(function (appendObj) {
// only append in PARSING state (rationale is that an appending error could happen synchronously on first segment appending)
// in that case it is useless to append following segments
if (_this2.state === audio_stream_controller_State.PARSING) {
// arm pending Buffering flag before appending a segment
_this2.pendingBuffering = true;
_this2.hls.trigger(events["a" /* default */].BUFFER_APPENDING, appendObj);
}
});
this.pendingData = [];
this.appended = true;
}
}
// trigger handler right now
this.tick();
}
};
AudioStreamController.prototype.onFragParsed = function onFragParsed(data) {
var fragCurrent = this.fragCurrent;
var fragNew = data.frag;
if (fragCurrent && data.id === 'audio' && fragNew.sn === fragCurrent.sn && fragNew.level === fragCurrent.level && this.state === audio_stream_controller_State.PARSING) {
this.stats.tparsed = audio_stream_controller_performance.now();
this.state = audio_stream_controller_State.PARSED;
this._checkAppendedParsed();
}
};
AudioStreamController.prototype.onBufferReset = function onBufferReset() {
// reset reference to sourcebuffers
this.mediaBuffer = this.videoBuffer = null;
this.loadedmetadata = false;
};
AudioStreamController.prototype.onBufferCreated = function onBufferCreated(data) {
var audioTrack = data.tracks.audio;
if (audioTrack) {
this.mediaBuffer = audioTrack.buffer;
this.loadedmetadata = true;
}
if (data.tracks.video) {
this.videoBuffer = data.tracks.video.buffer;
}
};
AudioStreamController.prototype.onBufferAppended = function onBufferAppended(data) {
if (data.parent === 'audio') {
var state = this.state;
if (state === audio_stream_controller_State.PARSING || state === audio_stream_controller_State.PARSED) {
// check if all buffers have been appended
this.pendingBuffering = data.pending > 0;
this._checkAppendedParsed();
}
}
};
AudioStreamController.prototype._checkAppendedParsed = function _checkAppendedParsed() {
// trigger handler right now
if (this.state === audio_stream_controller_State.PARSED && (!this.appended || !this.pendingBuffering)) {
var frag = this.fragCurrent,
stats = this.stats,
hls = this.hls;
if (frag) {
this.fragPrevious = frag;
stats.tbuffered = audio_stream_controller_performance.now();
hls.trigger(events["a" /* default */].FRAG_BUFFERED, { stats: stats, frag: frag, id: 'audio' });
var media = this.mediaBuffer ? this.mediaBuffer : this.media;
logger["b" /* logger */].log('audio buffered : ' + time_ranges.toString(media.buffered));
if (this.audioSwitch && this.appended) {
this.audioSwitch = false;
hls.trigger(events["a" /* default */].AUDIO_TRACK_SWITCHED, { id: this.trackId });
}
this.state = audio_stream_controller_State.IDLE;
}
this.tick();
}
};
AudioStreamController.prototype.onError = function onError(data) {
var frag = data.frag;
// don't handle frag error not related to audio fragment
if (frag && frag.type !== 'audio') {
return;
}
switch (data.details) {
case errors["a" /* ErrorDetails */].FRAG_LOAD_ERROR:
case errors["a" /* ErrorDetails */].FRAG_LOAD_TIMEOUT:
var _frag = data.frag;
// don't handle frag error not related to audio fragment
if (_frag && _frag.type !== 'audio') {
break;
}
if (!data.fatal) {
var loadError = this.fragLoadError;
if (loadError) {
loadError++;
} else {
loadError = 1;
}
var config = this.config;
if (loadError <= config.fragLoadingMaxRetry) {
this.fragLoadError = loadError;
// exponential backoff capped to config.fragLoadingMaxRetryTimeout
var delay = Math.min(Math.pow(2, loadError - 1) * config.fragLoadingRetryDelay, config.fragLoadingMaxRetryTimeout);
logger["b" /* logger */].warn('AudioStreamController: frag loading failed, retry in ' + delay + ' ms');
this.retryDate = audio_stream_controller_performance.now() + delay;
// retry loading state
this.state = audio_stream_controller_State.FRAG_LOADING_WAITING_RETRY;
} else {
logger["b" /* logger */].error('AudioStreamController: ' + data.details + ' reaches max retry, redispatch as fatal ...');
// switch error to fatal
data.fatal = true;
this.state = audio_stream_controller_State.ERROR;
}
}
break;
case errors["a" /* ErrorDetails */].AUDIO_TRACK_LOAD_ERROR:
case errors["a" /* ErrorDetails */].AUDIO_TRACK_LOAD_TIMEOUT:
case errors["a" /* ErrorDetails */].KEY_LOAD_ERROR:
case errors["a" /* ErrorDetails */].KEY_LOAD_TIMEOUT:
// when in ERROR state, don't switch back to IDLE state in case a non-fatal error is received
if (this.state !== audio_stream_controller_State.ERROR) {
// if fatal error, stop processing, otherwise move to IDLE to retry loading
this.state = data.fatal ? audio_stream_controller_State.ERROR : audio_stream_controller_State.IDLE;
logger["b" /* logger */].warn('AudioStreamController: ' + data.details + ' while loading frag, now switching to ' + this.state + ' state ...');
}
break;
case errors["a" /* ErrorDetails */].BUFFER_FULL_ERROR:
// if in appending state
if (data.parent === 'audio' && (this.state === audio_stream_controller_State.PARSING || this.state === audio_stream_controller_State.PARSED)) {
var media = this.mediaBuffer,
currentTime = this.media.currentTime,
mediaBuffered = media && BufferHelper.isBuffered(media, currentTime) && BufferHelper.isBuffered(media, currentTime + 0.5);
// reduce max buf len if current position is buffered
if (mediaBuffered) {
var _config = this.config;
if (_config.maxMaxBufferLength >= _config.maxBufferLength) {
// reduce max buffer length as it might be too high. we do this to avoid loop flushing ...
_config.maxMaxBufferLength /= 2;
logger["b" /* logger */].warn('AudioStreamController: reduce max buffer length to ' + _config.maxMaxBufferLength + 's');
}
this.state = audio_stream_controller_State.IDLE;
} else {
// current position is not buffered, but browser is still complaining about buffer full error
// this happens on IE/Edge, refer to https://github.com/video-dev/hls.js/pull/708
// in that case flush the whole audio buffer to recover
logger["b" /* logger */].warn('AudioStreamController: buffer full error also media.currentTime is not buffered, flush audio buffer');
this.fragCurrent = null;
// flush everything
this.state = audio_stream_controller_State.BUFFER_FLUSHING;
this.hls.trigger(events["a" /* default */].BUFFER_FLUSHING, { startOffset: 0, endOffset: Number.POSITIVE_INFINITY, type: 'audio' });
}
}
break;
default:
break;
}
};
AudioStreamController.prototype.onBufferFlushed = function onBufferFlushed() {
var _this3 = this;
var pendingData = this.pendingData;
if (pendingData && pendingData.length) {
logger["b" /* logger */].log('AudioStreamController: appending pending audio data after buffer flushed');
pendingData.forEach(function (appendObj) {
_this3.hls.trigger(events["a" /* default */].BUFFER_APPENDING, appendObj);
});
this.appended = true;
this.pendingData = [];
this.state = audio_stream_controller_State.PARSED;
} else {
// move to IDLE once flush complete. this should trigger new fragment loading
this.state = audio_stream_controller_State.IDLE;
// reset reference to frag
this.fragPrevious = null;
this.tick();
}
};
audio_stream_controller__createClass(AudioStreamController, [{
key: 'state',
set: function set(nextState) {
if (this.state !== nextState) {
var previousState = this.state;
this._state = nextState;
logger["b" /* logger */].log('audio stream:' + previousState + '->' + nextState);
}
},
get: function get() {
return this._state;
}
}]);
return AudioStreamController;
}(task_loop);
/* harmony default export */ var audio_stream_controller = (audio_stream_controller_AudioStreamController);
// CONCATENATED MODULE: ./src/utils/vttcue.js
/**
* Copyright 2013 vtt.js Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* harmony default export */ var vttcue = ((function () {
if (typeof window !== 'undefined' && window.VTTCue) {
return window.VTTCue;
}
var autoKeyword = 'auto';
var directionSetting = {
'': true,
lr: true,
rl: true
};
var alignSetting = {
start: true,
middle: true,
end: true,
left: true,
right: true
};
function findDirectionSetting(value) {
if (typeof value !== 'string') {
share/public_html/static/hls.js view on Meta::CPAN
_this.textTracks = [];
_this.tracks = [];
_this.unparsedVttFrags = [];
_this.initPTS = undefined;
_this.cueRanges = [];
_this.captionsTracks = {};
_this.captionsProperties = {
textTrack1: {
label: _this.config.captionsTextTrack1Label,
languageCode: _this.config.captionsTextTrack1LanguageCode
},
textTrack2: {
label: _this.config.captionsTextTrack2Label,
languageCode: _this.config.captionsTextTrack2LanguageCode
}
};
if (_this.config.enableCEA708Captions) {
var channel1 = new output_filter(_this, 'textTrack1');
var channel2 = new output_filter(_this, 'textTrack2');
_this.cea608Parser = new cea_608_parser(0, channel1, channel2);
}
return _this;
}
TimelineController.prototype.addCues = function addCues(trackName, startTime, endTime, screen) {
// skip cues which overlap more than 50% with previously parsed time ranges
var ranges = this.cueRanges;
var merged = false;
for (var i = ranges.length; i--;) {
var cueRange = ranges[i];
var overlap = intersection(cueRange[0], cueRange[1], startTime, endTime);
if (overlap >= 0) {
cueRange[0] = Math.min(cueRange[0], startTime);
cueRange[1] = Math.max(cueRange[1], endTime);
merged = true;
if (overlap / (endTime - startTime) > 0.5) {
return;
}
}
}
if (!merged) {
ranges.push([startTime, endTime]);
}
this.Cues.newCue(this.captionsTracks[trackName], startTime, endTime, screen);
};
// Triggered when an initial PTS is found; used for synchronisation of WebVTT.
TimelineController.prototype.onInitPtsFound = function onInitPtsFound(data) {
var _this2 = this;
if (typeof this.initPTS === 'undefined') {
this.initPTS = data.initPTS;
}
// Due to asynchrony, initial PTS may arrive later than the first VTT fragments are loaded.
// Parse any unparsed fragments upon receiving the initial PTS.
if (this.unparsedVttFrags.length) {
this.unparsedVttFrags.forEach(function (frag) {
_this2.onFragLoaded(frag);
});
this.unparsedVttFrags = [];
}
};
TimelineController.prototype.getExistingTrack = function getExistingTrack(trackName) {
var media = this.media;
if (media) {
for (var i = 0; i < media.textTracks.length; i++) {
var textTrack = media.textTracks[i];
if (textTrack[trackName]) {
return textTrack;
}
}
}
return null;
};
TimelineController.prototype.createCaptionsTrack = function createCaptionsTrack(trackName) {
var _captionsProperties$t = this.captionsProperties[trackName],
label = _captionsProperties$t.label,
languageCode = _captionsProperties$t.languageCode;
var captionsTracks = this.captionsTracks;
if (!captionsTracks[trackName]) {
// Enable reuse of existing text track.
var existingTrack = this.getExistingTrack(trackName);
if (!existingTrack) {
var textTrack = this.createTextTrack('captions', label, languageCode);
if (textTrack) {
// Set a special property on the track so we know it's managed by Hls.js
textTrack[trackName] = true;
captionsTracks[trackName] = textTrack;
}
} else {
captionsTracks[trackName] = existingTrack;
clearCurrentCues(captionsTracks[trackName]);
sendAddTrackEvent(captionsTracks[trackName], this.media);
}
}
};
TimelineController.prototype.createTextTrack = function createTextTrack(kind, label, lang) {
var media = this.media;
if (media) {
return media.addTextTrack(kind, label, lang);
}
};
TimelineController.prototype.destroy = function destroy() {
event_handler.prototype.destroy.call(this);
};
TimelineController.prototype.onMediaAttaching = function onMediaAttaching(data) {
this.media = data.media;
this._cleanTracks();
};
TimelineController.prototype.onMediaDetaching = function onMediaDetaching() {
var captionsTracks = this.captionsTracks;
Object.keys(captionsTracks).forEach(function (trackName) {
clearCurrentCues(captionsTracks[trackName]);
delete captionsTracks[trackName];
});
};
TimelineController.prototype.onManifestLoading = function onManifestLoading() {
this.lastSn = -1; // Detect discontiguity in fragment parsing
this.prevCC = -1;
this.vttCCs = { ccOffset: 0, presentationOffset: 0 }; // Detect discontinuity in subtitle manifests
this._cleanTracks();
};
TimelineController.prototype._cleanTracks = function _cleanTracks() {
// clear outdated subtitles
var media = this.media;
if (media) {
var textTracks = media.textTracks;
if (textTracks) {
for (var i = 0; i < textTracks.length; i++) {
clearCurrentCues(textTracks[i]);
}
}
}
};
TimelineController.prototype.onManifestLoaded = function onManifestLoaded(data) {
var _this3 = this;
this.textTracks = [];
this.unparsedVttFrags = this.unparsedVttFrags || [];
this.initPTS = undefined;
this.cueRanges = [];
if (this.config.enableWebVTT) {
this.tracks = data.subtitles || [];
var inUseTracks = this.media ? this.media.textTracks : [];
this.tracks.forEach(function (track, index) {
var textTrack = void 0;
if (index < inUseTracks.length) {
var inUseTrack = inUseTracks[index];
// Reuse tracks with the same label, but do not reuse 608/708 tracks
if (reuseVttTextTrack(inUseTrack, track)) {
textTrack = inUseTrack;
}
}
if (!textTrack) {
textTrack = _this3.createTextTrack('subtitles', track.name, track.lang);
}
if (track.default) {
textTrack.mode = _this3.hls.subtitleDisplay ? 'showing' : 'hidden';
} else {
textTrack.mode = 'disabled';
}
_this3.textTracks.push(textTrack);
});
}
};
TimelineController.prototype.onLevelSwitching = function onLevelSwitching() {
this.enabled = this.hls.currentLevel.closedCaptions !== 'NONE';
};
TimelineController.prototype.onFragLoaded = function onFragLoaded(data) {
var frag = data.frag,
payload = data.payload;
if (frag.type === 'main') {
var sn = frag.sn;
// if this frag isn't contiguous, clear the parser so cues with bad start/end times aren't added to the textTrack
if (sn !== this.lastSn + 1) {
var cea608Parser = this.cea608Parser;
if (cea608Parser) {
cea608Parser.reset();
}
}
this.lastSn = sn;
} // eslint-disable-line brace-style
// If fragment is subtitle type, parse as WebVTT.
else if (frag.type === 'subtitle') {
if (payload.byteLength) {
// We need an initial synchronisation PTS. Store fragments as long as none has arrived.
if (typeof this.initPTS === 'undefined') {
this.unparsedVttFrags.push(data);
return;
}
var decryptData = frag.decryptdata;
// If the subtitles are not encrypted, parse VTTs now. Otherwise, we need to wait.
if (decryptData == null || decryptData.key == null || decryptData.method !== 'AES-128') {
this._parseVTTs(frag, payload);
}
} else {
// In case there is no payload, finish unsuccessfully.
this.hls.trigger(events["a" /* default */].SUBTITLE_FRAG_PROCESSED, { success: false, frag: frag });
}
}
};
TimelineController.prototype._parseVTTs = function _parseVTTs(frag, payload) {
var vttCCs = this.vttCCs;
if (!vttCCs[frag.cc]) {
vttCCs[frag.cc] = { start: frag.start, prevCC: this.prevCC, new: true };
this.prevCC = frag.cc;
}
var textTracks = this.textTracks,
hls = this.hls;
// Parse the WebVTT file contents.
webvtt_parser.parse(payload, this.initPTS, vttCCs, frag.cc, function (cues) {
var currentTrack = textTracks[frag.trackId];
// WebVTTParser.parse is an async method and if the currently selected text track mode is set to "disabled"
// before parsing is done then don't try to access currentTrack.cues.getCueById as cues will be null
// and trying to access getCueById method of cues will throw an exception
if (currentTrack.mode === 'disabled') {
hls.trigger(events["a" /* default */].SUBTITLE_FRAG_PROCESSED, { success: false, frag: frag });
return;
}
// Add cues and trigger event with success true.
cues.forEach(function (cue) {
// Sometimes there are cue overlaps on segmented vtts so the same
// cue can appear more than once in different vtt files.
// This avoid showing duplicated cues with same timecode and text.
if (!currentTrack.cues.getCueById(cue.id)) {
try {
currentTrack.addCue(cue);
} catch (err) {
var textTrackCue = new window.TextTrackCue(cue.startTime, cue.endTime, cue.text);
textTrackCue.id = cue.id;
currentTrack.addCue(textTrackCue);
}
}
});
hls.trigger(events["a" /* default */].SUBTITLE_FRAG_PROCESSED, { success: true, frag: frag });
}, function (e) {
// Something went wrong while parsing. Trigger event with success false.
logger["b" /* logger */].log('Failed to parse VTT cue: ' + e);
hls.trigger(events["a" /* default */].SUBTITLE_FRAG_PROCESSED, { success: false, frag: frag });
});
};
TimelineController.prototype.onFragDecrypted = function onFragDecrypted(data) {
var decryptedData = data.payload,
frag = data.frag;
if (frag.type === 'subtitle') {
if (typeof this.initPTS === 'undefined') {
this.unparsedVttFrags.push(data);
return;
}
this._parseVTTs(frag, decryptedData);
}
};
TimelineController.prototype.onFragParsingUserdata = function onFragParsingUserdata(data) {
// push all of the CEA-708 messages into the interpreter
// immediately. It will create the proper timestamps based on our PTS value
if (this.enabled && this.config.enableCEA708Captions) {
for (var i = 0; i < data.samples.length; i++) {
var ccdatas = this.extractCea608Data(data.samples[i].bytes);
this.cea608Parser.addData(data.samples[i].pts, ccdatas);
}
}
};
TimelineController.prototype.extractCea608Data = function extractCea608Data(byteArray) {
var count = byteArray[0] & 31;
var position = 2;
var tmpByte = void 0,
ccbyte1 = void 0,
ccbyte2 = void 0,
ccValid = void 0,
ccType = void 0;
var actualCCBytes = [];
for (var j = 0; j < count; j++) {
tmpByte = byteArray[position++];
ccbyte1 = 0x7F & byteArray[position++];
ccbyte2 = 0x7F & byteArray[position++];
ccValid = (4 & tmpByte) !== 0;
ccType = 3 & tmpByte;
if (ccbyte1 === 0 && ccbyte2 === 0) {
continue;
}
if (ccValid) {
if (ccType === 0) {
// || ccType === 1
actualCCBytes.push(ccbyte1);
actualCCBytes.push(ccbyte2);
}
}
}
return actualCCBytes;
};
return TimelineController;
}(event_handler);
/* harmony default export */ var timeline_controller = (timeline_controller_TimelineController);
// CONCATENATED MODULE: ./src/controller/subtitle-track-controller.js
var subtitle_track_controller__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 ...
function subtitle_track_controller__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function subtitle_track_controller__possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ...
function subtitle_track_controller__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.protot...
/*
share/public_html/static/hls.js view on Meta::CPAN
function subtitle_stream_controller__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function subtitle_stream_controller__possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function")...
function subtitle_stream_controller__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.proto...
/*
* Subtitle Stream Controller
*/
var subtitle_stream_controller__window = window,
subtitle_stream_controller_performance = subtitle_stream_controller__window.performance;
var subtitle_stream_controller_State = {
STOPPED: 'STOPPED',
IDLE: 'IDLE',
KEY_LOADING: 'KEY_LOADING',
FRAG_LOADING: 'FRAG_LOADING'
};
var subtitle_stream_controller_SubtitleStreamController = function (_TaskLoop) {
subtitle_stream_controller__inherits(SubtitleStreamController, _TaskLoop);
function SubtitleStreamController(hls) {
subtitle_stream_controller__classCallCheck(this, SubtitleStreamController);
var _this = subtitle_stream_controller__possibleConstructorReturn(this, _TaskLoop.call(this, hls, events["a" /* default */].MEDIA_ATTACHED, events["a" /* default */].ERROR, events["a" /* default */].KEY_LOADED, events["a" /* default */].FRAG_LOAD...
_this.config = hls.config;
_this.vttFragSNsProcessed = {};
_this.vttFragQueues = undefined;
_this.currentlyProcessing = null;
_this.state = subtitle_stream_controller_State.STOPPED;
_this.currentTrackId = -1;
_this.decrypter = new decrypter["a" /* default */](hls.observer, hls.config);
return _this;
}
SubtitleStreamController.prototype.onHandlerDestroyed = function onHandlerDestroyed() {
this.state = subtitle_stream_controller_State.STOPPED;
};
// Remove all queued items and create a new, empty queue for each track.
SubtitleStreamController.prototype.clearVttFragQueues = function clearVttFragQueues() {
var _this2 = this;
this.vttFragQueues = {};
this.tracks.forEach(function (track) {
_this2.vttFragQueues[track.id] = [];
});
};
// If no frag is being processed and queue isn't empty, initiate processing of next frag in line.
SubtitleStreamController.prototype.nextFrag = function nextFrag() {
if (this.currentlyProcessing === null && this.currentTrackId > -1 && this.vttFragQueues[this.currentTrackId].length) {
var frag = this.currentlyProcessing = this.vttFragQueues[this.currentTrackId].shift();
this.fragCurrent = frag;
this.hls.trigger(events["a" /* default */].FRAG_LOADING, { frag: frag });
this.state = subtitle_stream_controller_State.FRAG_LOADING;
}
};
// When fragment has finished processing, add sn to list of completed if successful.
SubtitleStreamController.prototype.onSubtitleFragProcessed = function onSubtitleFragProcessed(data) {
if (data.success) {
this.vttFragSNsProcessed[data.frag.trackId].push(data.frag.sn);
}
this.currentlyProcessing = null;
this.state = subtitle_stream_controller_State.IDLE;
this.nextFrag();
};
SubtitleStreamController.prototype.onMediaAttached = function onMediaAttached() {
this.state = subtitle_stream_controller_State.IDLE;
};
// If something goes wrong, procede to next frag, if we were processing one.
SubtitleStreamController.prototype.onError = function onError(data) {
var frag = data.frag;
// don't handle frag error not related to subtitle fragment
if (frag && frag.type !== 'subtitle') {
return;
}
if (this.currentlyProcessing) {
this.currentlyProcessing = null;
this.nextFrag();
}
};
SubtitleStreamController.prototype.doTick = function doTick() {
var _this3 = this;
switch (this.state) {
case subtitle_stream_controller_State.IDLE:
var tracks = this.tracks;
var trackId = this.currentTrackId;
var processedFragSNs = this.vttFragSNsProcessed[trackId],
fragQueue = this.vttFragQueues[trackId],
currentFragSN = this.currentlyProcessing ? this.currentlyProcessing.sn : -1;
var alreadyProcessed = function alreadyProcessed(frag) {
return processedFragSNs.indexOf(frag.sn) > -1;
};
var alreadyInQueue = function alreadyInQueue(frag) {
return fragQueue.some(function (fragInQueue) {
return fragInQueue.sn === frag.sn;
});
};
// exit if tracks don't exist
if (!tracks) {
break;
}
var trackDetails;
if (trackId < tracks.length) {
trackDetails = tracks[trackId].details;
}
if (typeof trackDetails === 'undefined') {
break;
}
// Add all fragments that haven't been, aren't currently being and aren't waiting to be processed, to queue.
trackDetails.fragments.forEach(function (frag) {
if (!(alreadyProcessed(frag) || frag.sn === currentFragSN || alreadyInQueue(frag))) {
// Load key if subtitles are encrypted
if (frag.encrypted) {
logger["b" /* logger */].log('Loading key for ' + frag.sn);
_this3.state = subtitle_stream_controller_State.KEY_LOADING;
_this3.hls.trigger(events["a" /* default */].KEY_LOADING, { frag: frag });
} else {
// Frags don't know their subtitle track ID, so let's just add that...
frag.trackId = trackId;
fragQueue.push(frag);
_this3.nextFrag();
}
}
});
}
};
// Got all new subtitle tracks.
SubtitleStreamController.prototype.onSubtitleTracksUpdated = function onSubtitleTracksUpdated(data) {
var _this4 = this;
logger["b" /* logger */].log('subtitle tracks updated');
this.tracks = data.subtitleTracks;
this.clearVttFragQueues();
this.vttFragSNsProcessed = {};
this.tracks.forEach(function (track) {
_this4.vttFragSNsProcessed[track.id] = [];
});
};
SubtitleStreamController.prototype.onSubtitleTrackSwitch = function onSubtitleTrackSwitch(data) {
this.currentTrackId = data.id;
if (!this.tracks || this.currentTrackId === -1) {
return;
}
// Check if track was already loaded and if so make sure we finish
// downloading its frags, if not all have been downloaded yet
var currentTrack = this.tracks[this.currentTrackId];
if (currentTrack && currentTrack.details) {
this.tick();
}
};
// Got a new set of subtitle fragments.
SubtitleStreamController.prototype.onSubtitleTrackLoaded = function onSubtitleTrackLoaded() {
this.tick();
};
SubtitleStreamController.prototype.onKeyLoaded = function onKeyLoaded() {
if (this.state === subtitle_stream_controller_State.KEY_LOADING) {
this.state = subtitle_stream_controller_State.IDLE;
this.tick();
}
};
SubtitleStreamController.prototype.onFragLoaded = function onFragLoaded(data) {
var fragCurrent = this.fragCurrent,
decryptData = data.frag.decryptdata;
var fragLoaded = data.frag,
hls = this.hls;
if (this.state === subtitle_stream_controller_State.FRAG_LOADING && fragCurrent && data.frag.type === 'subtitle' && fragCurrent.sn === data.frag.sn) {
// check to see if the payload needs to be decrypted
if (data.payload.byteLength > 0 && decryptData != null && decryptData.key != null && decryptData.method === 'AES-128') {
var startTime = void 0;
try {
startTime = subtitle_stream_controller_performance.now();
} catch (error) {
startTime = Date.now();
}
// decrypt the subtitles
this.decrypter.decrypt(data.payload, decryptData.key.buffer, decryptData.iv.buffer, function (decryptedData) {
var endTime = void 0;
try {
endTime = subtitle_stream_controller_performance.now();
} catch (error) {
endTime = Date.now();
}
hls.trigger(events["a" /* default */].FRAG_DECRYPTED, { frag: fragLoaded, payload: decryptedData, stats: { tstart: startTime, tdecrypt: endTime } });
});
}
}
};
return SubtitleStreamController;
}(task_loop);
/* harmony default export */ var subtitle_stream_controller = (subtitle_stream_controller_SubtitleStreamController);
// CONCATENATED MODULE: ./src/controller/eme-controller.js
var eme_controller__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 ...
function eme_controller__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function eme_controller__possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : se...
function eme_controller__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 = Objec...
/**
* @author Stephan Hesse <disparat@gmail.com> | <tchakabam@gmail.com>
*
* DRM support for Hls.js
*/
var eme_controller__window = window,
eme_controller_XMLHttpRequest = eme_controller__window.XMLHttpRequest;
var MAX_LICENSE_REQUEST_FAILURES = 3;
/**
* @see https://developer.mozilla.org/en-US/docs/Web/API/Navigator/requestMediaKeySystemAccess
*/
var KeySystems = {
WIDEVINE: 'com.widevine.alpha',
PLAYREADY: 'com.microsoft.playready'
};
/**
* @see https://developer.mozilla.org/en-US/docs/Web/API/MediaKeySystemConfiguration
* @param {Array<string>} audioCodecs List of required audio codecs to support
* @param {Array<string>} videoCodecs List of required video codecs to support
* @param {object} drmSystemOptions Optional parameters/requirements for the key-system
* @returns {Array<MediaSystemConfiguration>} An array of supported configurations
*/
var createWidevineMediaKeySystemConfigurations = function createWidevineMediaKeySystemConfigurations(audioCodecs, videoCodecs, drmSystemOptions) {
/* jshint ignore:line */
var baseConfig = {
// initDataTypes: ['keyids', 'mp4'],
// label: "",
// persistentState: "not-allowed", // or "required" ?
// distinctiveIdentifier: "not-allowed", // or "required" ?
// sessionTypes: ['temporary'],
share/public_html/static/hls.js view on Meta::CPAN
}();
// CONCATENATED MODULE: ./src/config.js
/**
* HLS config
*/
// import FetchLoader from './utils/fetch-loader';
var hlsDefaultConfig = {
autoStartLoad: true, // used by stream-controller
startPosition: -1, // used by stream-controller
defaultAudioCodec: undefined, // used by stream-controller
debug: false, // used by logger
capLevelOnFPSDrop: false, // used by fps-controller
capLevelToPlayerSize: false, // used by cap-level-controller
initialLiveManifestSize: 1, // used by stream-controller
maxBufferLength: 30, // used by stream-controller
maxBufferSize: 60 * 1000 * 1000, // used by stream-controller
maxBufferHole: 0.5, // used by stream-controller
lowBufferWatchdogPeriod: 0.5, // used by stream-controller
highBufferWatchdogPeriod: 3, // used by stream-controller
nudgeOffset: 0.1, // used by stream-controller
nudgeMaxRetry: 3, // used by stream-controller
maxFragLookUpTolerance: 0.25, // used by stream-controller
liveSyncDurationCount: 3, // used by stream-controller
liveMaxLatencyDurationCount: Infinity, // used by stream-controller
liveSyncDuration: undefined, // used by stream-controller
liveMaxLatencyDuration: undefined, // used by stream-controller
liveDurationInfinity: false, // used by buffer-controller
maxMaxBufferLength: 600, // used by stream-controller
enableWorker: true, // used by demuxer
enableSoftwareAES: true, // used by decrypter
manifestLoadingTimeOut: 10000, // used by playlist-loader
manifestLoadingMaxRetry: 1, // used by playlist-loader
manifestLoadingRetryDelay: 1000, // used by playlist-loader
manifestLoadingMaxRetryTimeout: 64000, // used by playlist-loader
startLevel: undefined, // used by level-controller
levelLoadingTimeOut: 10000, // used by playlist-loader
levelLoadingMaxRetry: 4, // used by playlist-loader
levelLoadingRetryDelay: 1000, // used by playlist-loader
levelLoadingMaxRetryTimeout: 64000, // used by playlist-loader
fragLoadingTimeOut: 20000, // used by fragment-loader
fragLoadingMaxRetry: 6, // used by fragment-loader
fragLoadingRetryDelay: 1000, // used by fragment-loader
fragLoadingMaxRetryTimeout: 64000, // used by fragment-loader
startFragPrefetch: false, // used by stream-controller
fpsDroppedMonitoringPeriod: 5000, // used by fps-controller
fpsDroppedMonitoringThreshold: 0.2, // used by fps-controller
appendErrorMaxRetry: 3, // used by buffer-controller
loader: xhr_loader,
// loader: FetchLoader,
fLoader: undefined, // used by fragment-loader
pLoader: undefined, // used by playlist-loader
xhrSetup: undefined, // used by xhr-loader
licenseXhrSetup: undefined, // used by eme-controller
// fetchSetup: undefined,
abrController: abr_controller,
bufferController: buffer_controller,
capLevelController: cap_level_controller,
fpsController: fps_controller,
stretchShortVideoTrack: false, // used by mp4-remuxer
maxAudioFramesDrift: 1, // used by mp4-remuxer
forceKeyFrameOnDiscontinuity: true, // used by ts-demuxer
abrEwmaFastLive: 3, // used by abr-controller
abrEwmaSlowLive: 9, // used by abr-controller
abrEwmaFastVoD: 3, // used by abr-controller
abrEwmaSlowVoD: 9, // used by abr-controller
abrEwmaDefaultEstimate: 5e5, // 500 kbps // used by abr-controller
abrBandWidthFactor: 0.95, // used by abr-controller
abrBandWidthUpFactor: 0.7, // used by abr-controller
abrMaxWithRealBitrate: false, // used by abr-controller
maxStarvationDelay: 4, // used by abr-controller
maxLoadingDelay: 4, // used by abr-controller
minAutoBitrate: 0, // used by hls
emeEnabled: false, // used by eme-controller
widevineLicenseUrl: undefined, // used by eme-controller
requestMediaKeySystemAccessFunc: requestMediaKeySystemAccess // used by eme-controller
};
if (true) {
hlsDefaultConfig.subtitleStreamController = subtitle_stream_controller;
hlsDefaultConfig.subtitleTrackController = subtitle_track_controller;
hlsDefaultConfig.timelineController = timeline_controller;
hlsDefaultConfig.cueHandler = cues_namespaceObject; // used by timeline-controller
hlsDefaultConfig.enableCEA708Captions = true; // used by timeline-controller
hlsDefaultConfig.enableWebVTT = true; // used by timeline-controller
hlsDefaultConfig.captionsTextTrack1Label = 'English'; // used by timeline-controller
hlsDefaultConfig.captionsTextTrack1LanguageCode = 'en'; // used by timeline-controller
hlsDefaultConfig.captionsTextTrack2Label = 'Spanish'; // used by timeline-controller
hlsDefaultConfig.captionsTextTrack2LanguageCode = 'es'; // used by timeline-controller
}
if (true) {
hlsDefaultConfig.audioStreamController = audio_stream_controller;
hlsDefaultConfig.audioTrackController = audio_track_controller;
}
if (true) {
hlsDefaultConfig.emeController = eme_controller;
}
// CONCATENATED MODULE: ./src/hls.js
var hls__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...
function hls__classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
share/public_html/static/hls.js view on Meta::CPAN
var config = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
hls__classCallCheck(this, Hls);
var defaultConfig = Hls.DefaultConfig;
if ((config.liveSyncDurationCount || config.liveMaxLatencyDurationCount) && (config.liveSyncDuration || config.liveMaxLatencyDuration)) {
throw new Error('Illegal hls.js config: don\'t mix up liveSyncDurationCount/liveMaxLatencyDurationCount and liveSyncDuration/liveMaxLatencyDuration');
}
for (var prop in defaultConfig) {
if (prop in config) continue;
config[prop] = defaultConfig[prop];
}
if (config.liveMaxLatencyDurationCount !== undefined && config.liveMaxLatencyDurationCount <= config.liveSyncDurationCount) {
throw new Error('Illegal hls.js config: "liveMaxLatencyDurationCount" must be gt "liveSyncDurationCount"');
}
if (config.liveMaxLatencyDuration !== undefined && (config.liveMaxLatencyDuration <= config.liveSyncDuration || config.liveSyncDuration === undefined)) {
throw new Error('Illegal hls.js config: "liveMaxLatencyDuration" must be gt "liveSyncDuration"');
}
Object(logger["a" /* enableLogs */])(config.debug);
this.config = config;
this._autoLevelCapping = -1;
// observer setup
var observer = this.observer = new events_default.a();
observer.trigger = function trigger(event) {
for (var _len = arguments.length, data = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
data[_key - 1] = arguments[_key];
}
observer.emit.apply(observer, [event, event].concat(data));
};
observer.off = function off(event) {
for (var _len2 = arguments.length, data = Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
data[_key2 - 1] = arguments[_key2];
}
observer.removeListener.apply(observer, [event].concat(data));
};
this.on = observer.on.bind(observer);
this.off = observer.off.bind(observer);
this.once = observer.once.bind(observer);
this.trigger = observer.trigger.bind(observer);
// core controllers and network loaders
/**
* @member {AbrController} abrController
*/
var abrController = this.abrController = new config.abrController(this);
var bufferController = new config.bufferController(this);
var capLevelController = new config.capLevelController(this);
var fpsController = new config.fpsController(this);
var playListLoader = new playlist_loader(this);
var fragmentLoader = new fragment_loader(this);
var keyLoader = new key_loader(this);
var id3TrackController = new id3_track_controller(this);
// network controllers
/**
* @member {LevelController} levelController
*/
var levelController = this.levelController = new level_controller(this);
// FIXME: FragmentTracker must be defined before StreamController because the order of event handling is important
var fragmentTracker = new fragment_tracker_FragmentTracker(this);
/**
* @member {StreamController} streamController
*/
var streamController = this.streamController = new stream_controller(this, fragmentTracker);
var networkControllers = [levelController, streamController];
// optional audio stream controller
/**
* @var {ICoreComponent | Controller}
*/
var Controller = config.audioStreamController;
if (Controller) {
networkControllers.push(new Controller(this, fragmentTracker));
}
/**
* @member {INetworkController[]} networkControllers
*/
this.networkControllers = networkControllers;
/**
* @var {ICoreComponent[]}
*/
var coreComponents = [playListLoader, fragmentLoader, keyLoader, abrController, bufferController, capLevelController, fpsController, id3TrackController, fragmentTracker];
// optional audio track and subtitle controller
Controller = config.audioTrackController;
if (Controller) {
var audioTrackController = new Controller(this);
/**
* @member {AudioTrackController} audioTrackController
*/
this.audioTrackController = audioTrackController;
coreComponents.push(audioTrackController);
}
Controller = config.subtitleTrackController;
if (Controller) {
var subtitleTrackController = new Controller(this);
/**
* @member {SubtitleTrackController} subtitleTrackController
*/
this.subtitleTrackController = subtitleTrackController;
coreComponents.push(subtitleTrackController);
}
Controller = config.emeController;
if (Controller) {
var emeController = new Controller(this);
/**
* @member {EMEController} emeController
*/
this.emeController = emeController;
coreComponents.push(emeController);
}
// optional subtitle controller
[config.subtitleStreamController, config.timelineController].forEach(function (Controller) {
if (Controller) {
coreComponents.push(new Controller(_this));
}
});
/**
* @member {ICoreComponent[]}
*/
this.coreComponents = coreComponents;
}
/**
* Dispose of the instance
*/
Hls.prototype.destroy = function destroy() {
logger["b" /* logger */].log('destroy');
this.trigger(events["a" /* default */].DESTROYING);
this.detachMedia();
this.coreComponents.concat(this.networkControllers).forEach(function (component) {
component.destroy();
});
share/public_html/static/hls.js view on Meta::CPAN
* Automatic recovery of media-errors by this process is configurable.
*/
Hls.prototype.recoverMediaError = function recoverMediaError() {
logger["b" /* logger */].log('recoverMediaError');
var media = this.media;
this.detachMedia();
this.attachMedia(media);
};
/**
* @type {QualityLevel[]}
*/
hls__createClass(Hls, [{
key: 'levels',
get: function get() {
return this.levelController.levels;
}
/**
* Index of quality level currently played
* @type {number}
*/
}, {
key: 'currentLevel',
get: function get() {
return this.streamController.currentLevel;
}
/**
* Set quality level index immediately .
* This will flush the current buffer to replace the quality asap.
* That means playback will interrupt at least shortly to re-buffer and re-sync eventually.
* @type {number} -1 for automatic level selection
*/
,
set: function set(newLevel) {
logger["b" /* logger */].log('set currentLevel:' + newLevel);
this.loadLevel = newLevel;
this.streamController.immediateLevelSwitch();
}
/**
* Index of next quality level loaded as scheduled by stream controller.
* @type {number}
*/
}, {
key: 'nextLevel',
get: function get() {
return this.streamController.nextLevel;
}
/**
* Set quality level index for next loaded data.
* This will switch the video quality asap, without interrupting playback.
* May abort current loading of data, and flush parts of buffer (outside currently played fragment region).
* @type {number} -1 for automatic level selection
*/
,
set: function set(newLevel) {
logger["b" /* logger */].log('set nextLevel:' + newLevel);
this.levelController.manualLevel = newLevel;
this.streamController.nextLevelSwitch();
}
/**
* Return the quality level of the currently or last (of none is loaded currently) segment
* @type {number}
*/
}, {
key: 'loadLevel',
get: function get() {
return this.levelController.level;
}
/**
* Set quality level index for next loaded data in a conservative way.
* This will switch the quality without flushing, but interrupt current loading.
* Thus the moment when the quality switch will appear in effect will only be after the already existing buffer.
* @type {number} newLevel -1 for automatic level selection
*/
,
set: function set(newLevel) {
logger["b" /* logger */].log('set loadLevel:' + newLevel);
this.levelController.manualLevel = newLevel;
}
/**
* get next quality level loaded
* @type {number}
*/
}, {
key: 'nextLoadLevel',
get: function get() {
return this.levelController.nextLoadLevel;
}
/**
* Set quality level of next loaded segment in a fully "non-destructive" way.
* Same as `loadLevel` but will wait for next switch (until current loading is done).
* @type {number} level
*/
,
set: function set(level) {
this.levelController.nextLoadLevel = level;
}
/**
* Return "first level": like a default level, if not set,
* falls back to index of first level referenced in manifest
* @type {number}
*/
}, {
key: 'firstLevel',
get: function get() {
return Math.max(this.levelController.firstLevel, this.minAutoLevel);
}
/**
* Sets "first-level", see getter.
* @type {number}
*/
,
set: function set(newLevel) {
logger["b" /* logger */].log('set firstLevel:' + newLevel);
this.levelController.firstLevel = newLevel;
}
/**
* Return start level (level of first fragment that will be played back)
* if not overrided by user, first level appearing in manifest will be used as start level
* if -1 : automatic start level selection, playback will start from level matching download bandwidth
* (determined from download of first segment)
* @type {number}
*/
}, {
key: 'startLevel',
get: function get() {
return this.levelController.startLevel;
}
/**
* set start level (level of first fragment that will be played back)
* if not overrided by user, first level appearing in manifest will be used as start level
* if -1 : automatic start level selection, playback will start from level matching download bandwidth
* (determined from download of first segment)
* @type {number} newLevel
*/
,
set: function set(newLevel) {
logger["b" /* logger */].log('set startLevel:' + newLevel);
var hls = this;
// if not in automatic start level detection, ensure startLevel is greater than minAutoLevel
if (newLevel !== -1) {
newLevel = Math.max(newLevel, hls.minAutoLevel);
}
hls.levelController.startLevel = newLevel;
}
/**
* Capping/max level value that should be used by automatic level selection algorithm (`ABRController`)
* @type {number}
*/
}, {
key: 'autoLevelCapping',
get: function get() {
return this._autoLevelCapping;
}
/**
* Capping/max level value that should be used by automatic level selection algorithm (`ABRController`)
* @type {number}
*/
,
set: function set(newLevel) {
logger["b" /* logger */].log('set autoLevelCapping:' + newLevel);
this._autoLevelCapping = newLevel;
}
/**
* True when automatic level selection enabled
* @type {boolean}
*/
}, {
key: 'autoLevelEnabled',
get: function get() {
return this.levelController.manualLevel === -1;
}
/**
* Level set manually (if any)
* @type {number}
*/
}, {
key: 'manualLevel',
get: function get() {
return this.levelController.manualLevel;
}
/**
* min level selectable in auto mode according to config.minAutoBitrate
* @type {number}
*/
}, {
key: 'minAutoLevel',
get: function get() {
var hls = this,
levels = hls.levels,
minAutoBitrate = hls.config.minAutoBitrate,
len = levels ? levels.length : 0;
for (var i = 0; i < len; i++) {
var levelNextBitrate = levels[i].realBitrate ? Math.max(levels[i].realBitrate, levels[i].bitrate) : levels[i].bitrate;
if (levelNextBitrate > minAutoBitrate) {
return i;
}
}
return 0;
}
/**
* max level selectable in auto mode according to autoLevelCapping
* @type {number}
*/
}, {
key: 'maxAutoLevel',
get: function get() {
var hls = this;
var levels = hls.levels;
var autoLevelCapping = hls.autoLevelCapping;
var maxAutoLevel = void 0;
if (autoLevelCapping === -1 && levels && levels.length) {
maxAutoLevel = levels.length - 1;
} else {
maxAutoLevel = autoLevelCapping;
}
return maxAutoLevel;
}
/**
* next automatically selected quality level
* @type {number}
*/
}, {
key: 'nextAutoLevel',
get: function get() {
var hls = this;
// ensure next auto level is between min and max auto level
return Math.min(Math.max(hls.abrController.nextAutoLevel, hls.minAutoLevel), hls.maxAutoLevel);
}
/**
* this setter is used to force next auto level.
* this is useful to force a switch down in auto mode:
* in case of load error on level N, hls.js can set nextAutoLevel to N-1 for example)
* forced value is valid for one fragment. upon succesful frag loading at forced level,
* this value will be resetted to -1 by ABR controller.
* @type {number}
*/
,
set: function set(nextLevel) {
var hls = this;
hls.abrController.nextAutoLevel = Math.max(hls.minAutoLevel, nextLevel);
}
/**
* @type {AudioTrack[]}
*/
}, {
key: 'audioTracks',
get: function get() {
var audioTrackController = this.audioTrackController;
return audioTrackController ? audioTrackController.audioTracks : [];
}
/**
* index of the selected audio track (index in audio track lists)
* @type {number}
*/
}, {
key: 'audioTrack',
get: function get() {
var audioTrackController = this.audioTrackController;
return audioTrackController ? audioTrackController.audioTrack : -1;
}
/**
* selects an audio track, based on its index in audio track lists
* @type {number}
*/
,
set: function set(audioTrackId) {
var audioTrackController = this.audioTrackController;
if (audioTrackController) {
audioTrackController.audioTrack = audioTrackId;
}
}
/**
* @type {Seconds}
*/
}, {
key: 'liveSyncPosition',
get: function get() {
return this.streamController.liveSyncPosition;
}
/**
* get alternate subtitle tracks list from playlist
* @type {SubtitleTrack[]}
*/
}, {
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