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// Thanks https://github.com/streamroot/videojs-hlsjs-plugin
// We duplicated this plugin to choose the hls.js version we want, because streamroot only provide a bundled file
import Hlsjs, { ErrorData, HlsConfig, Level, LevelSwitchingData, ManifestParsedData } from 'hls.js'
import videojs from 'video.js'
import { logger } from '@root-helpers/logger'
import { HlsjsConfigHandlerOptions, PeerTubeResolution, VideoJSTechHLS } from '../../types'
type ErrorCounts = {
[ type: string ]: number
}
type Metadata = {
levels: Level[]
}
type HookFn = (player: videojs.Player, hljs: Hlsjs) => void
const registerSourceHandler = function (vjs: typeof videojs) {
if (!Hlsjs.isSupported()) {
logger.warn('Hls.js is not supported in this browser!')
return
}
const html5 = vjs.getTech('Html5')
if (!html5) {
logger.error('No Hml5 tech found in videojs')
return
}
// FIXME: typings
(html5 as any).registerSourceHandler({
canHandleSource: function (source: videojs.Tech.SourceObject) {
const hlsTypeRE = /^application\/x-mpegURL|application\/vnd\.apple\.mpegurl$/i
const hlsExtRE = /\.m3u8/i
if (hlsTypeRE.test(source.type)) return 'probably'
if (hlsExtRE.test(source.src)) return 'maybe'
return ''
},
handleSource: function (source: videojs.Tech.SourceObject, tech: VideoJSTechHLS) {
if (tech.hlsProvider) {
tech.hlsProvider.dispose()
}
tech.hlsProvider = new Html5Hlsjs(vjs, source, tech)
return tech.hlsProvider
}
}, 0);
// FIXME: typings
(vjs as any).Html5Hlsjs = Html5Hlsjs
}
function hlsjsConfigHandler (this: videojs.Player, options: HlsjsConfigHandlerOptions) {
const player = this
if (!options) return
if (!player.srOptions_) {
player.srOptions_ = {}
}
if (!player.srOptions_.hlsjsConfig) {
player.srOptions_.hlsjsConfig = options.hlsjsConfig
}
if (options.levelLabelHandler && !player.srOptions_.levelLabelHandler) {
player.srOptions_.levelLabelHandler = options.levelLabelHandler
}
}
const registerConfigPlugin = function (vjs: typeof videojs) {
// Used in Brightcove since we don't pass options directly there
const registerVjsPlugin = vjs.registerPlugin || vjs.plugin
registerVjsPlugin('hlsjs', hlsjsConfigHandler)
}
class Html5Hlsjs {
private static readonly hooks: { [id: string]: HookFn[] } = {}
private readonly videoElement: HTMLVideoElement
private readonly errorCounts: ErrorCounts = {}
private readonly player: videojs.Player
private readonly tech: videojs.Tech
private readonly source: videojs.Tech.SourceObject
private readonly vjs: typeof videojs
private maxNetworkErrorRecovery = 5
private hls: Hlsjs
private hlsjsConfig: Partial<HlsConfig & { cueHandler: any }> = null
private _duration: number = null
private metadata: Metadata = null
private isLive: boolean = null
private dvrDuration: number = null
private edgeMargin: number = null
private handlers: { [ id in 'play' ]: EventListener } = {
play: null
}
constructor (vjs: typeof videojs, source: videojs.Tech.SourceObject, tech: videojs.Tech) {
this.vjs = vjs
this.source = source
this.tech = tech;
(this.tech as any).name_ = 'Hlsjs'
this.videoElement = tech.el() as HTMLVideoElement
this.player = vjs((tech.options_ as any).playerId)
this.videoElement.addEventListener('error', event => {
let errorTxt: string
const mediaError = ((event.currentTarget || event.target) as HTMLVideoElement).error
if (!mediaError) return
logger.info(mediaError)
switch (mediaError.code) {
case mediaError.MEDIA_ERR_ABORTED:
errorTxt = 'You aborted the video playback'
break
case mediaError.MEDIA_ERR_DECODE:
errorTxt = 'The video playback was aborted due to a corruption problem or because the video used features ' +
'your browser did not support'
this._handleMediaError(mediaError)
break
case mediaError.MEDIA_ERR_NETWORK:
errorTxt = 'A network error caused the video download to fail part-way'
break
case mediaError.MEDIA_ERR_SRC_NOT_SUPPORTED:
errorTxt = 'The video could not be loaded, either because the server or network failed or because the format is not supported'
break
default:
errorTxt = mediaError.message
}
logger.error(`MEDIA_ERROR: ${errorTxt}`)
})
this.initialize()
}
duration () {
if (this._duration === Infinity) return Infinity
if (!isNaN(this.videoElement.duration)) return this.videoElement.duration
return this._duration || 0
}
seekable () {
if (this.hls.media) {
if (!this.isLive) {
return this.vjs.createTimeRanges(0, this.hls.media.duration)
}
// Video.js doesn't seem to like floating point timeranges
const startTime = Math.round(this.hls.media.duration - this.dvrDuration)
const endTime = Math.round(this.hls.media.duration - this.edgeMargin)
return this.vjs.createTimeRanges(startTime, endTime)
}
return this.vjs.createTimeRanges()
}
// See comment for `initialize` method.
dispose () {
this.videoElement.removeEventListener('play', this.handlers.play)
// FIXME: https://github.com/video-dev/hls.js/issues/4092
const untypedHLS = this.hls as any
untypedHLS.log = untypedHLS.warn = () => {
// empty
}
this.hls.destroy()
}
static addHook (type: string, callback: HookFn) {
Html5Hlsjs.hooks[type] = this.hooks[type] || []
Html5Hlsjs.hooks[type].push(callback)
}
static removeHook (type: string, callback: HookFn) {
if (Html5Hlsjs.hooks[type] === undefined) return false
const index = Html5Hlsjs.hooks[type].indexOf(callback)
if (index === -1) return false
Html5Hlsjs.hooks[type].splice(index, 1)
return true
}
private _executeHooksFor (type: string) {
if (Html5Hlsjs.hooks[type] === undefined) {
return
}
// ES3 and IE < 9
for (let i = 0; i < Html5Hlsjs.hooks[type].length; i++) {
Html5Hlsjs.hooks[type][i](this.player, this.hls)
}
}
private _getHumanErrorMsg (error: { message: string, code?: number }) {
switch (error.code) {
default:
return error.message
}
}
private _handleUnrecovarableError (error: any) {
if (this.hls.levels.filter(l => l.id > -1).length > 1) {
this._removeQuality(this.hls.loadLevel)
return
}
this.hls.destroy()
logger.info('bubbling error up to VIDEOJS')
this.tech.error = () => ({
...error,
message: this._getHumanErrorMsg(error)
})
this.tech.trigger('error')
}
private _handleMediaError (error: any) {
if (this.errorCounts[Hlsjs.ErrorTypes.MEDIA_ERROR] === 1) {
logger.info('trying to recover media error')
this.hls.recoverMediaError()
return
}
if (this.errorCounts[Hlsjs.ErrorTypes.MEDIA_ERROR] === 2) {
logger.info('2nd try to recover media error (by swapping audio codec')
this.hls.swapAudioCodec()
this.hls.recoverMediaError()
return
}
if (this.errorCounts[Hlsjs.ErrorTypes.MEDIA_ERROR] > 2) {
this._handleUnrecovarableError(error)
}
}
private _handleNetworkError (error: any) {
if (navigator.onLine === false) return
if (this.errorCounts[Hlsjs.ErrorTypes.NETWORK_ERROR] <= this.maxNetworkErrorRecovery) {
logger.info('trying to recover network error')
// Wait 1 second and retry
setTimeout(() => this.hls.startLoad(), 1000)
// Reset error count on success
this.hls.once(Hlsjs.Events.FRAG_LOADED, () => {
this.errorCounts[Hlsjs.ErrorTypes.NETWORK_ERROR] = 0
})
return
}
this._handleUnrecovarableError(error)
}
private _onError (_event: any, data: ErrorData) {
const error: { message: string, code?: number } = {
message: `HLS.js error: ${data.type} - fatal: ${data.fatal} - ${data.details}`
}
// increment/set error count
if (this.errorCounts[data.type]) this.errorCounts[data.type] += 1
else this.errorCounts[data.type] = 1
if (data.fatal) logger.warn(error.message)
else logger.error(error.message, { data })
if (data.type === Hlsjs.ErrorTypes.NETWORK_ERROR) {
error.code = 2
this._handleNetworkError(error)
} else if (data.fatal && data.type === Hlsjs.ErrorTypes.MEDIA_ERROR && data.details !== 'manifestIncompatibleCodecsError') {
error.code = 3
this._handleMediaError(error)
} else if (data.fatal) {
this._handleUnrecovarableError(error)
}
}
private buildLevelLabel (level: Level) {
if (this.player.srOptions_.levelLabelHandler) {
return this.player.srOptions_.levelLabelHandler(level as any)
}
if (level.height) return level.height + 'p'
if (level.width) return Math.round(level.width * 9 / 16) + 'p'
if (level.bitrate) return (level.bitrate / 1000) + 'kbps'
return '0'
}
private _removeQuality (index: number) {
this.hls.removeLevel(index)
this.player.peertubeResolutions().remove(index)
this.hls.currentLevel = -1
}
private _notifyVideoQualities () {
if (!this.metadata) return
const resolutions: PeerTubeResolution[] = []
this.metadata.levels.forEach((level, index) => {
resolutions.push({
id: index,
height: level.height,
width: level.width,
bitrate: level.bitrate,
label: this.buildLevelLabel(level),
selected: level.id === this.hls.manualLevel,
selectCallback: () => {
this.hls.currentLevel = index
}
})
})
resolutions.push({
id: -1,
label: this.player.localize('Auto'),
selected: true,
selectCallback: () => this.hls.currentLevel = -1
})
this.player.peertubeResolutions().add(resolutions)
}
private _startLoad () {
this.hls.startLoad(-1)
this.videoElement.removeEventListener('play', this.handlers.play)
}
private _oneLevelObjClone (obj: { [ id: string ]: any }) {
const result = {}
const objKeys = Object.keys(obj)
for (let i = 0; i < objKeys.length; i++) {
result[objKeys[i]] = obj[objKeys[i]]
}
return result
}
private _onMetaData (_event: any, data: ManifestParsedData) {
// This could arrive before 'loadedqualitydata' handlers is registered, remember it so we can raise it later
this.metadata = data
this._notifyVideoQualities()
}
private _initHlsjs () {
const techOptions = this.tech.options_ as HlsjsConfigHandlerOptions
const srOptions_ = this.player.srOptions_
const hlsjsConfigRef = srOptions_?.hlsjsConfig || techOptions.hlsjsConfig
// Hls.js will write to the reference thus change the object for later streams
this.hlsjsConfig = hlsjsConfigRef ? this._oneLevelObjClone(hlsjsConfigRef) : {}
if ([ '', 'auto' ].includes(this.videoElement.preload) && !this.videoElement.autoplay && this.hlsjsConfig.autoStartLoad === undefined) {
this.hlsjsConfig.autoStartLoad = false
}
// If the user explicitly sets autoStartLoad to false, we're not going to enter the if block above
// That's why we have a separate if block here to set the 'play' listener
if (this.hlsjsConfig.autoStartLoad === false) {
this.handlers.play = this._startLoad.bind(this)
this.videoElement.addEventListener('play', this.handlers.play)
}
this.hls = new Hlsjs(this.hlsjsConfig)
this._executeHooksFor('beforeinitialize')
this.hls.on(Hlsjs.Events.ERROR, (event, data) => this._onError(event, data))
this.hls.on(Hlsjs.Events.MANIFEST_PARSED, (event, data) => this._onMetaData(event, data))
this.hls.on(Hlsjs.Events.LEVEL_LOADED, (event, data) => {
// The DVR plugin will auto seek to "live edge" on start up
if (this.hlsjsConfig.liveSyncDuration) {
this.edgeMargin = this.hlsjsConfig.liveSyncDuration
} else if (this.hlsjsConfig.liveSyncDurationCount) {
this.edgeMargin = this.hlsjsConfig.liveSyncDurationCount * data.details.targetduration
}
this.isLive = data.details.live
this.dvrDuration = data.details.totalduration
this._duration = this.isLive ? Infinity : data.details.totalduration
// Increase network error recovery for lives since they can be broken (server restart, stream interruption etc)
if (this.isLive) this.maxNetworkErrorRecovery = 300
})
this.hls.once(Hlsjs.Events.FRAG_LOADED, () => {
// Emit custom 'loadedmetadata' event for parity with `videojs-contrib-hls`
// Ref: https://github.com/videojs/videojs-contrib-hls#loadedmetadata
this.tech.trigger('loadedmetadata')
})
this.hls.on(Hlsjs.Events.LEVEL_SWITCHING, (_e, data: LevelSwitchingData) => {
const resolutionId = this.hls.autoLevelEnabled
? -1
: data.level
const autoResolutionChosenId = this.hls.autoLevelEnabled
? data.level
: -1
this.player.peertubeResolutions().select({ id: resolutionId, autoResolutionChosenId, byEngine: true })
})
this.hls.attachMedia(this.videoElement)
this.hls.loadSource(this.source.src)
}
private initialize () {
this._initHlsjs()
}
}
export {
Html5Hlsjs,
registerSourceHandler,
registerConfigPlugin
}
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