1 import Hlsjs from 'hls.js'
2 import videojs from 'video.js'
3 import { Events, Segment } from '@peertube/p2p-media-loader-core'
4 import { Engine, initHlsJsPlayer, initVideoJsContribHlsJsPlayer } from '@peertube/p2p-media-loader-hlsjs'
5 import { logger } from '@root-helpers/logger'
6 import { timeToInt } from '@shared/core-utils'
7 import { P2PMediaLoaderPluginOptions, PlayerNetworkInfo } from '../../types'
8 import { registerConfigPlugin, registerSourceHandler } from './hls-plugin'
10 registerConfigPlugin(videojs)
11 registerSourceHandler(videojs)
13 const Plugin = videojs.getPlugin('plugin')
14 class P2pMediaLoaderPlugin extends Plugin {
16 private readonly CONSTANTS = {
17 INFO_SCHEDULER: 1000 // Don't change this
19 private readonly options: P2PMediaLoaderPluginOptions
22 private p2pEngine: Engine
23 private statsP2PBytes = {
24 pendingDownload: [] as number[],
25 pendingUpload: [] as number[],
30 private statsHTTPBytes = {
31 pendingDownload: [] as number[],
34 private startTime: number
36 private networkInfoInterval: any
38 constructor (player: videojs.Player, options?: P2PMediaLoaderPluginOptions) {
41 this.options = options
43 // FIXME: typings https://github.com/Microsoft/TypeScript/issues/14080
44 if (!(videojs as any).Html5Hlsjs) {
45 logger.warn('HLS.js does not seem to be supported. Try to fallback to built in HLS.')
48 if (!player.canPlayType('application/vnd.apple.mpegurl')) {
49 message = 'Cannot fallback to built-in HLS'
50 } else if (options.requiresAuth) {
51 message = 'Video requires auth which is not compatible to build-in HLS player'
57 const error: MediaError = {
58 code: MediaError.MEDIA_ERR_SRC_NOT_SUPPORTED,
60 MEDIA_ERR_ABORTED: MediaError.MEDIA_ERR_ABORTED,
61 MEDIA_ERR_DECODE: MediaError.MEDIA_ERR_DECODE,
62 MEDIA_ERR_NETWORK: MediaError.MEDIA_ERR_NETWORK,
63 MEDIA_ERR_SRC_NOT_SUPPORTED: MediaError.MEDIA_ERR_SRC_NOT_SUPPORTED
66 player.ready(() => player.error(error))
70 // Workaround to force video.js to not re create a video element
71 (this.player as any).playerElIngest_ = this.player.el().parentNode
73 // FIXME: typings https://github.com/Microsoft/TypeScript/issues/14080
74 (videojs as any).Html5Hlsjs.addHook('beforeinitialize', (videojsPlayer: any, hlsjs: any) => {
78 initVideoJsContribHlsJsPlayer(player)
81 this.startTime = timeToInt(options.startTime)
91 if ((videojs as any).Html5Hlsjs) {
92 this.initializePlugin()
98 if (this.hlsjs) this.hlsjs.destroy()
99 if (this.p2pEngine) this.p2pEngine.destroy()
101 clearInterval(this.networkInfoInterval)
105 if (!this.hlsjs) return undefined
107 return this.hlsjs.levels[this.hlsjs.currentLevel]
111 return Math.round(this.hlsjs.latency)
118 private initializeCore () {
119 this.player.one('play', () => {
120 this.player.addClass('vjs-has-big-play-button-clicked')
123 this.player.one('canplay', () => {
124 if (this.startTime) {
125 this.player.currentTime(this.startTime)
130 private initializePlugin () {
131 initHlsJsPlayer(this.hlsjs)
133 this.p2pEngine = this.options.loader.getEngine()
135 this.p2pEngine.on(Events.SegmentError, (segment: Segment, err) => {
136 if (navigator.onLine === false) return
138 logger.error(`Segment ${segment.id} error.`, err)
140 this.options.redundancyUrlManager.removeBySegmentUrl(segment.requestUrl)
143 this.statsP2PBytes.numPeers = 1 + this.options.redundancyUrlManager.countBaseUrls()
147 this.hlsjs.on(Hlsjs.Events.LEVEL_SWITCHED, () => this.player.trigger('engineResolutionChange'))
150 private runStats () {
151 this.p2pEngine.on(Events.PieceBytesDownloaded, (method: string, _segment, bytes: number) => {
152 const elem = method === 'p2p' ? this.statsP2PBytes : this.statsHTTPBytes
154 elem.pendingDownload.push(bytes)
155 elem.totalDownload += bytes
158 this.p2pEngine.on(Events.PieceBytesUploaded, (method: string, _segment, bytes: number) => {
159 if (method !== 'p2p') {
160 logger.error(`Received upload from unknown method ${method}`)
164 this.statsP2PBytes.pendingUpload.push(bytes)
165 this.statsP2PBytes.totalUpload += bytes
168 this.p2pEngine.on(Events.PeerConnect, () => this.statsP2PBytes.numPeers++)
169 this.p2pEngine.on(Events.PeerClose, () => this.statsP2PBytes.numPeers--)
171 this.networkInfoInterval = setInterval(() => {
172 const p2pDownloadSpeed = this.arraySum(this.statsP2PBytes.pendingDownload)
173 const p2pUploadSpeed = this.arraySum(this.statsP2PBytes.pendingUpload)
175 const httpDownloadSpeed = this.arraySum(this.statsHTTPBytes.pendingDownload)
177 this.statsP2PBytes.pendingDownload = []
178 this.statsP2PBytes.pendingUpload = []
179 this.statsHTTPBytes.pendingDownload = []
181 return this.player.trigger('p2pInfo', {
182 source: 'p2p-media-loader',
184 downloadSpeed: httpDownloadSpeed,
185 downloaded: this.statsHTTPBytes.totalDownload
188 downloadSpeed: p2pDownloadSpeed,
189 uploadSpeed: p2pUploadSpeed,
190 numPeers: this.statsP2PBytes.numPeers,
191 downloaded: this.statsP2PBytes.totalDownload,
192 uploaded: this.statsP2PBytes.totalUpload
194 bandwidthEstimate: (this.hlsjs as any).bandwidthEstimate / 8
195 } as PlayerNetworkInfo)
196 }, this.CONSTANTS.INFO_SCHEDULER)
199 private arraySum (data: number[]) {
200 return data.reduce((a: number, b: number) => a + b, 0)
204 videojs.registerPlugin('p2pMediaLoader', P2pMediaLoaderPlugin)
205 export { P2pMediaLoaderPlugin }