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import Hlsjs from 'hls.js'
import videojs from 'video.js'
import { Events, Segment } from '@peertube/p2p-media-loader-core'
import { Engine, initHlsJsPlayer, initVideoJsContribHlsJsPlayer } from '@peertube/p2p-media-loader-hlsjs'
import { logger } from '@root-helpers/logger'
import { addQueryParams } from '@shared/core-utils'
import { P2PMediaLoaderPluginOptions, PlayerNetworkInfo } from '../../types'
import { SettingsButton } from '../settings/settings-menu-button'
const Plugin = videojs.getPlugin('plugin')
class P2pMediaLoaderPlugin extends Plugin {
private readonly options: P2PMediaLoaderPluginOptions
private hlsjs: Hlsjs
private p2pEngine: Engine
private statsP2PBytes = {
pendingDownload: [] as number[],
pendingUpload: [] as number[],
peersWithWebSeed: 0,
peersP2POnly: 0,
totalDownload: 0,
totalUpload: 0
}
private statsHTTPBytes = {
pendingDownload: [] as number[],
totalDownload: 0
}
private networkInfoInterval: any
constructor (player: videojs.Player, options?: P2PMediaLoaderPluginOptions) {
super(player)
this.options = options
// FIXME: typings https://github.com/Microsoft/TypeScript/issues/14080
if (!(videojs as any).Html5Hlsjs) {
if (player.canPlayType('application/vnd.apple.mpegurl')) {
this.fallbackToBuiltInIOS()
return
}
const message = 'HLS.js does not seem to be supported. Cannot fallback to built-in HLS'
logger.warn(message)
const error: MediaError = {
code: MediaError.MEDIA_ERR_SRC_NOT_SUPPORTED,
message,
MEDIA_ERR_ABORTED: MediaError.MEDIA_ERR_ABORTED,
MEDIA_ERR_DECODE: MediaError.MEDIA_ERR_DECODE,
MEDIA_ERR_NETWORK: MediaError.MEDIA_ERR_NETWORK,
MEDIA_ERR_SRC_NOT_SUPPORTED: MediaError.MEDIA_ERR_SRC_NOT_SUPPORTED
}
player.ready(() => player.error(error))
return
}
// FIXME: typings https://github.com/Microsoft/TypeScript/issues/14080
(videojs as any).Html5Hlsjs.addHook('beforeinitialize', (_videojsPlayer: any, hlsjs: any) => {
this.hlsjs = hlsjs
})
initVideoJsContribHlsJsPlayer(player)
player.src({
type: options.type,
src: options.src
})
player.ready(() => {
this.initializePlugin()
})
}
dispose () {
this.p2pEngine?.removeAllListeners()
this.p2pEngine?.destroy()
this.hlsjs?.destroy()
this.options.segmentValidator?.destroy();
(videojs as any).Html5Hlsjs?.removeAllHooks()
clearInterval(this.networkInfoInterval)
super.dispose()
}
getCurrentLevel () {
if (!this.hlsjs) return undefined
return this.hlsjs.levels[this.hlsjs.currentLevel]
}
getLiveLatency () {
return Math.round(this.hlsjs.latency)
}
getHLSJS () {
return this.hlsjs
}
private initializePlugin () {
initHlsJsPlayer(this.hlsjs)
this.p2pEngine = this.options.loader.getEngine()
this.p2pEngine.on(Events.SegmentError, (segment: Segment, err) => {
if (navigator.onLine === false) return
logger.error(`Segment ${segment.id} error.`, err)
this.options.redundancyUrlManager.removeBySegmentUrl(segment.requestUrl)
})
this.statsP2PBytes.peersWithWebSeed = 1 + this.options.redundancyUrlManager.countBaseUrls()
this.runStats()
this.hlsjs.on(Hlsjs.Events.LEVEL_SWITCHED, () => this.player.trigger('engine-resolution-change'))
}
private runStats () {
this.p2pEngine.on(Events.PieceBytesDownloaded, (method: string, _segment, bytes: number) => {
const elem = method === 'p2p' ? this.statsP2PBytes : this.statsHTTPBytes
elem.pendingDownload.push(bytes)
elem.totalDownload += bytes
})
this.p2pEngine.on(Events.PieceBytesUploaded, (method: string, _segment, bytes: number) => {
if (method !== 'p2p') {
logger.error(`Received upload from unknown method ${method}`)
return
}
this.statsP2PBytes.pendingUpload.push(bytes)
this.statsP2PBytes.totalUpload += bytes
})
this.p2pEngine.on(Events.PeerConnect, () => {
this.statsP2PBytes.peersWithWebSeed++
this.statsP2PBytes.peersP2POnly++
})
this.p2pEngine.on(Events.PeerClose, () => {
this.statsP2PBytes.peersWithWebSeed--
this.statsP2PBytes.peersP2POnly--
})
this.networkInfoInterval = setInterval(() => {
const p2pDownloadSpeed = this.arraySum(this.statsP2PBytes.pendingDownload)
const p2pUploadSpeed = this.arraySum(this.statsP2PBytes.pendingUpload)
const httpDownloadSpeed = this.arraySum(this.statsHTTPBytes.pendingDownload)
this.statsP2PBytes.pendingDownload = []
this.statsP2PBytes.pendingUpload = []
this.statsHTTPBytes.pendingDownload = []
return this.player.trigger('network-info', {
source: 'p2p-media-loader',
bandwidthEstimate: (this.hlsjs as any).bandwidthEstimate / 8,
http: {
downloadSpeed: httpDownloadSpeed,
downloaded: this.statsHTTPBytes.totalDownload
},
p2p: this.options.p2pEnabled
? {
downloadSpeed: p2pDownloadSpeed,
uploadSpeed: p2pUploadSpeed,
peersWithWebSeed: this.statsP2PBytes.peersWithWebSeed,
peersP2POnly: this.statsP2PBytes.peersP2POnly,
downloaded: this.statsP2PBytes.totalDownload,
uploaded: this.statsP2PBytes.totalUpload
}
: undefined
} as PlayerNetworkInfo)
}, 1000)
}
private arraySum (data: number[]) {
return data.reduce((a: number, b: number) => a + b, 0)
}
private fallbackToBuiltInIOS () {
logger.info('HLS.js does not seem to be supported. Fallback to built-in HLS.')
this.player.src({
type: this.options.type,
src: addQueryParams(this.options.src, {
videoFileToken: this.options.videoFileToken(),
reinjectVideoFileToken: 'true'
})
})
// Resolution button is not supported in built-in HLS player
this.getResolutionButton().hide()
}
private getResolutionButton () {
const settingsButton = this.player.controlBar.getDescendant([ 'settingsButton' ]) as SettingsButton
return settingsButton.menu.getChild('resolutionMenuButton')
}
}
videojs.registerPlugin('p2pMediaLoader', P2pMediaLoaderPlugin)
export { P2pMediaLoaderPlugin }
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