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| /**
* HLS interface
*/
import URLToolkit from 'url-toolkit';
import Event from './events';
import {ErrorTypes, ErrorDetails} from './errors';
import PlaylistLoader from './loader/playlist-loader';
import FragmentLoader from './loader/fragment-loader';
import KeyLoader from './loader/key-loader';
import StreamController from './controller/stream-controller';
import LevelController from './controller/level-controller';
import ID3TrackController from './controller/id3-track-controller';
import {isSupported} from './helper/is-supported';
import {logger, enableLogs} from './utils/logger';
import EventEmitter from 'events';
import {hlsDefaultConfig} from './config';
export default class Hls {
static get version() {
return __VERSION__;
}
static isSupported() {
return isSupported();
}
static get Events() {
return Event;
}
static get ErrorTypes() {
return ErrorTypes;
}
static get ErrorDetails() {
return ErrorDetails;
}
static get DefaultConfig() {
Eif(!Hls.defaultConfig) {
return hlsDefaultConfig;
}
return Hls.defaultConfig;
}
static set DefaultConfig(defaultConfig) {
Hls.defaultConfig = defaultConfig;
}
constructor(config = {}) {
var defaultConfig = Hls.DefaultConfig;
Iif ((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];
}
Iif (config.liveMaxLatencyDurationCount !== undefined && config.liveMaxLatencyDurationCount <= config.liveSyncDurationCount) {
throw new Error('Illegal hls.js config: "liveMaxLatencyDurationCount" must be gt "liveSyncDurationCount"');
}
Iif (config.liveMaxLatencyDuration !== undefined && (config.liveMaxLatencyDuration <= config.liveSyncDuration || config.liveSyncDuration === undefined)) {
throw new Error('Illegal hls.js config: "liveMaxLatencyDuration" must be gt "liveSyncDuration"');
}
enableLogs(config.debug);
this.config = config;
this._autoLevelCapping = -1;
// observer setup
var observer = this.observer = new EventEmitter();
observer.trigger = function trigger (event, ...data) {
observer.emit(event, event, ...data);
};
observer.off = function off (event, ...data) {
observer.removeListener(event, ...data);
};
this.on = observer.on.bind(observer);
this.off = observer.off.bind(observer);
this.trigger = observer.trigger.bind(observer);
// core controllers and network loaders
const abrController = this.abrController = new config.abrController(this);
const bufferController = new config.bufferController(this);
const capLevelController = new config.capLevelController(this);
const fpsController = new config.fpsController(this);
const playListLoader = new PlaylistLoader(this);
const fragmentLoader = new FragmentLoader(this);
const keyLoader = new KeyLoader(this);
const id3TrackController = new ID3TrackController(this);
// network controllers
const levelController = this.levelController = new LevelController(this);
const streamController = this.streamController = new StreamController(this);
let networkControllers = [levelController, streamController];
// optional audio stream controller
let Controller = config.audioStreamController;
Iif (Controller) {
networkControllers.push(new Controller(this));
}
this.networkControllers = networkControllers;
let coreComponents = [ playListLoader, fragmentLoader, keyLoader, abrController, bufferController, capLevelController, fpsController, id3TrackController ];
// optional audio track and subtitle controller
Controller = config.audioTrackController;
Iif (Controller) {
let audioTrackController = new Controller(this);
this.audioTrackController = audioTrackController;
coreComponents.push(audioTrackController);
}
Controller = config.subtitleTrackController;
Iif (Controller) {
let subtitleTrackController = new Controller(this);
this.subtitleTrackController = subtitleTrackController;
coreComponents.push(subtitleTrackController);
}
// optional subtitle controller
[config.subtitleStreamController, config.timelineController].forEach(Controller => {
Iif (Controller) {
coreComponents.push(new Controller(this));
}
});
this.coreComponents = coreComponents;
}
destroy() {
logger.log('destroy');
this.trigger(Event.DESTROYING);
this.detachMedia();
this.coreComponents.concat(this.networkControllers).forEach(component => {component.destroy();});
this.url = null;
this.observer.removeAllListeners();
this._autoLevelCapping = -1;
}
attachMedia(media) {
logger.log('attachMedia');
this.media = media;
this.trigger(Event.MEDIA_ATTACHING, {media: media});
}
detachMedia() {
logger.log('detachMedia');
this.trigger(Event.MEDIA_DETACHING);
this.media = null;
}
loadSource(url) {
url = URLToolkit.buildAbsoluteURL(window.location.href, url, { alwaysNormalize: true });
logger.log(`loadSource:${url}`);
this.url = url;
// when attaching to a source URL, trigger a playlist load
this.trigger(Event.MANIFEST_LOADING, {url: url});
}
startLoad(startPosition=-1) {
logger.log(`startLoad(${startPosition})`);
this.networkControllers.forEach(controller => {controller.startLoad(startPosition);});
}
stopLoad() {
logger.log('stopLoad');
this.networkControllers.forEach(controller => {controller.stopLoad();});
}
swapAudioCodec() {
logger.log('swapAudioCodec');
this.streamController.swapAudioCodec();
}
recoverMediaError() {
logger.log('recoverMediaError');
var media = this.media;
this.detachMedia();
this.attachMedia(media);
}
/** Return all quality levels **/
get levels() {
return this.levelController.levels;
}
/** Return current playback quality level **/
get currentLevel() {
return this.streamController.currentLevel;
}
/* set quality level immediately (-1 for automatic level selection) */
set currentLevel(newLevel) {
logger.log(`set currentLevel:${newLevel}`);
this.loadLevel = newLevel;
this.streamController.immediateLevelSwitch();
}
/** Return next playback quality level (quality level of next fragment) **/
get nextLevel() {
return this.streamController.nextLevel;
}
/* set quality level for next fragment (-1 for automatic level selection) */
set nextLevel(newLevel) {
logger.log(`set nextLevel:${newLevel}`);
this.levelController.manualLevel = newLevel;
this.streamController.nextLevelSwitch();
}
/** Return the quality level of current/last loaded fragment **/
get loadLevel() {
return this.levelController.level;
}
/* set quality level for current/next loaded fragment (-1 for automatic level selection) */
set loadLevel(newLevel) {
logger.log(`set loadLevel:${newLevel}`);
this.levelController.manualLevel = newLevel;
}
/** Return the quality level of next loaded fragment **/
get nextLoadLevel() {
return this.levelController.nextLoadLevel;
}
/** set quality level of next loaded fragment **/
set nextLoadLevel(level) {
this.levelController.nextLoadLevel = level;
}
/** Return first level (index of first level referenced in manifest)
**/
get firstLevel() {
return Math.max(this.levelController.firstLevel, this.minAutoLevel);
}
/** set first level (index of first level referenced in manifest)
**/
set firstLevel(newLevel) {
logger.log(`set firstLevel:${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)
**/
get startLevel() {
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)
**/
set startLevel(newLevel) {
logger.log(`set startLevel:${newLevel}`);
const hls = this;
// if not in automatic start level detection, ensure startLevel is greater than minAutoLevel
if (newLevel !== -1) {
newLevel = Math.max(newLevel,hls.minAutoLevel);
}
hls.levelController.startLevel = newLevel;
}
/** Return the capping/max level value that could be used by automatic level selection algorithm **/
get autoLevelCapping() {
return this._autoLevelCapping;
}
/** set the capping/max level value that could be used by automatic level selection algorithm **/
set autoLevelCapping(newLevel) {
logger.log(`set autoLevelCapping:${newLevel}`);
this._autoLevelCapping = newLevel;
}
/* check if we are in automatic level selection mode */
get autoLevelEnabled() {
return (this.levelController.manualLevel === -1);
}
/* return manual level */
get manualLevel() {
return this.levelController.manualLevel;
}
/* return min level selectable in auto mode according to config.minAutoBitrate */
get minAutoLevel() {
let hls = this, levels = hls.levels, minAutoBitrate = hls.config.minAutoBitrate, len = levels ? levels.length : 0;
for (let i = 0; i < len; i++) {
const levelNextBitrate = levels[i].realBitrate ? Math.max(levels[i].realBitrate,levels[i].bitrate) : levels[i].bitrate;
Eif (levelNextBitrate > minAutoBitrate) {
return i;
}
}
return 0;
}
/* return max level selectable in auto mode according to autoLevelCapping */
get maxAutoLevel() {
const hls = this;
const levels = hls.levels;
const autoLevelCapping = hls.autoLevelCapping;
let maxAutoLevel;
Eif (autoLevelCapping=== -1 && levels && levels.length) {
maxAutoLevel = levels.length - 1;
} else {
maxAutoLevel = autoLevelCapping;
}
return maxAutoLevel;
}
// return next auto level
get nextAutoLevel() {
const 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
set nextAutoLevel(nextLevel) {
const hls = this;
hls.abrController.nextAutoLevel = Math.max(hls.minAutoLevel,nextLevel);
}
/** get alternate audio tracks list from playlist **/
get audioTracks() {
const audioTrackController = this.audioTrackController;
return audioTrackController ? audioTrackController.audioTracks : [];
}
/** get index of the selected audio track (index in audio track lists) **/
get audioTrack() {
const audioTrackController = this.audioTrackController;
return audioTrackController ? audioTrackController.audioTrack : -1;
}
/** select an audio track, based on its index in audio track lists**/
set audioTrack(audioTrackId) {
const audioTrackController = this.audioTrackController;
if (audioTrackController) {
audioTrackController.audioTrack = audioTrackId;
}
}
get liveSyncPosition() {
return this.streamController.liveSyncPosition;
}
/** get alternate subtitle tracks list from playlist **/
get subtitleTracks() {
const subtitleTrackController = this.subtitleTrackController;
return subtitleTrackController ? subtitleTrackController.subtitleTracks : [];
}
/** get index of the selected subtitle track (index in subtitle track lists) **/
get subtitleTrack() {
const subtitleTrackController = this.subtitleTrackController;
return subtitleTrackController ? subtitleTrackController.subtitleTrack : -1;
}
/** select an subtitle track, based on its index in subtitle track lists**/
set subtitleTrack(subtitleTrackId) {
const subtitleTrackController = this.subtitleTrackController;
if (subtitleTrackController) {
subtitleTrackController.subtitleTrack = subtitleTrackId;
}
}
get subtitleDisplay() {
const subtitleTrackController = this.subtitleTrackController;
return subtitleTrackController ? subtitleTrackController.subtitleDisplay : false;
}
set subtitleDisplay(value) {
const subtitleTrackController = this.subtitleTrackController;
if (subtitleTrackController) {
subtitleTrackController.subtitleDisplay = value;
}
}
}
|