client/src/assets/player/peertube-videojs-plugin.ts

   1 // Big thanks to: https://github.com/kmoskwiak/videojs-resolution-switcher
   2
   3 import * as videojs from 'video.js'
   4 import * as WebTorrent from 'webtorrent'
   5 import { VideoConstant, VideoResolution } from '../../../../shared/models/videos'
   6 import { VideoFile } from '../../../../shared/models/videos/video.model'
   7 import { renderVideo } from './video-renderer'
   8
   9 declare module 'video.js' {
  10   interface Player {
  11     peertube (): PeerTubePlugin
  12   }
  13 }
  14
  15 interface VideoJSComponentInterface {
  16   _player: videojs.Player
  17
  18   new (player: videojs.Player, options?: any)
  19
  20   registerComponent (name: string, obj: any)
  21 }
  22
  23 type PeertubePluginOptions = {
  24   videoFiles: VideoFile[]
  25   playerElement: HTMLVideoElement
  26   videoViewUrl: string
  27   videoDuration: number
  28 }
  29
  30 // https://github.com/danrevah/ngx-pipes/blob/master/src/pipes/math/bytes.ts
  31 // Don't import all Angular stuff, just copy the code with shame
  32 const dictionaryBytes: Array<{max: number, type: string}> = [
  33   { max: 1024, type: 'B' },
  34   { max: 1048576, type: 'KB' },
  35   { max: 1073741824, type: 'MB' },
  36   { max: 1.0995116e12, type: 'GB' }
  37 ]
  38 function bytes (value) {
  39   const format = dictionaryBytes.find(d => value < d.max) || dictionaryBytes[dictionaryBytes.length - 1]
  40   const calc = Math.floor(value / (format.max / 1024)).toString()
  41
  42   return [ calc, format.type ]
  43 }
  44
  45 // videojs typings don't have some method we need
  46 const videojsUntyped = videojs as any
  47 const webtorrent = new WebTorrent({
  48   tracker: {
  49     rtcConfig: {
  50       iceServers: [
  51         {
  52           urls: 'stun:stun.stunprotocol.org'
  53         },
  54         {
  55           urls: 'stun:stun.framasoft.org'
  56         }
  57       ]
  58     }
  59   },
  60   dht: false
  61 })
  62
  63 const MenuItem: VideoJSComponentInterface = videojsUntyped.getComponent('MenuItem')
  64 class ResolutionMenuItem extends MenuItem {
  65
  66   constructor (player: videojs.Player, options) {
  67     options.selectable = true
  68     super(player, options)
  69
  70     const currentResolutionId = this.player_.peertube().getCurrentResolutionId()
  71     this.selected(this.options_.id === currentResolutionId)
  72   }
  73
  74   handleClick (event) {
  75     super.handleClick(event)
  76
  77     this.player_.peertube().updateResolution(this.options_.id)
  78   }
  79 }
  80 MenuItem.registerComponent('ResolutionMenuItem', ResolutionMenuItem)
  81
  82 const MenuButton: VideoJSComponentInterface = videojsUntyped.getComponent('MenuButton')
  83 class ResolutionMenuButton extends MenuButton {
  84   label: HTMLElement
  85
  86   constructor (player: videojs.Player, options) {
  87     options.label = 'Quality'
  88     super(player, options)
  89
  90     this.label = document.createElement('span')
  91
  92     this.el().setAttribute('aria-label', 'Quality')
  93     this.controlText('Quality')
  94
  95     videojsUntyped.dom.addClass(this.label, 'vjs-resolution-button-label')
  96     this.el().appendChild(this.label)
  97
  98     player.peertube().on('videoFileUpdate', () => this.update())
  99   }
 100
 101   createItems () {
 102     const menuItems = []
 103     for (const videoFile of this.player_.peertube().videoFiles) {
 104       menuItems.push(new ResolutionMenuItem(
 105         this.player_,
 106         {
 107           id: videoFile.resolution.id,
 108           label: videoFile.resolution.label,
 109           src: videoFile.magnetUri,
 110           selected: videoFile.resolution.id === this.currentSelectionId
 111         })
 112       )
 113     }
 114
 115     return menuItems
 116   }
 117
 118   update () {
 119     if (!this.label) return
 120
 121     this.label.innerHTML = this.player_.peertube().getCurrentResolutionLabel()
 122     this.hide()
 123     return super.update()
 124   }
 125
 126   buildCSSClass () {
 127     return super.buildCSSClass() + ' vjs-resolution-button'
 128   }
 129 }
 130 MenuButton.registerComponent('ResolutionMenuButton', ResolutionMenuButton)
 131
 132 const Button: VideoJSComponentInterface = videojsUntyped.getComponent('Button')
 133 class PeerTubeLinkButton extends Button {
 134
 135   createEl () {
 136     const link = document.createElement('a')
 137     link.href = window.location.href.replace('embed', 'watch')
 138     link.innerHTML = 'PeerTube'
 139     link.title = 'Go to the video page'
 140     link.className = 'vjs-peertube-link'
 141     link.target = '_blank'
 142
 143     return link
 144   }
 145
 146   handleClick () {
 147     this.player_.pause()
 148   }
 149 }
 150 Button.registerComponent('PeerTubeLinkButton', PeerTubeLinkButton)
 151
 152 class WebTorrentButton extends Button {
 153   createEl () {
 154     const div = document.createElement('div')
 155     const subDivWebtorrent = document.createElement('div')
 156     div.appendChild(subDivWebtorrent)
 157
 158     const downloadIcon = document.createElement('span')
 159     downloadIcon.classList.add('icon', 'icon-download')
 160     subDivWebtorrent.appendChild(downloadIcon)
 161
 162     const downloadSpeedText = document.createElement('span')
 163     downloadSpeedText.classList.add('download-speed-text')
 164     const downloadSpeedNumber = document.createElement('span')
 165     downloadSpeedNumber.classList.add('download-speed-number')
 166     const downloadSpeedUnit = document.createElement('span')
 167     downloadSpeedText.appendChild(downloadSpeedNumber)
 168     downloadSpeedText.appendChild(downloadSpeedUnit)
 169     subDivWebtorrent.appendChild(downloadSpeedText)
 170
 171     const uploadIcon = document.createElement('span')
 172     uploadIcon.classList.add('icon', 'icon-upload')
 173     subDivWebtorrent.appendChild(uploadIcon)
 174
 175     const uploadSpeedText = document.createElement('span')
 176     uploadSpeedText.classList.add('upload-speed-text')
 177     const uploadSpeedNumber = document.createElement('span')
 178     uploadSpeedNumber.classList.add('upload-speed-number')
 179     const uploadSpeedUnit = document.createElement('span')
 180     uploadSpeedText.appendChild(uploadSpeedNumber)
 181     uploadSpeedText.appendChild(uploadSpeedUnit)
 182     subDivWebtorrent.appendChild(uploadSpeedText)
 183
 184     const peersText = document.createElement('span')
 185     peersText.classList.add('peers-text')
 186     const peersNumber = document.createElement('span')
 187     peersNumber.classList.add('peers-number')
 188     subDivWebtorrent.appendChild(peersNumber)
 189     subDivWebtorrent.appendChild(peersText)
 190
 191     div.className = 'vjs-peertube'
 192     // Hide the stats before we get the info
 193     subDivWebtorrent.className = 'vjs-peertube-hidden'
 194
 195     const subDivHttp = document.createElement('div')
 196     subDivHttp.className = 'vjs-peertube-hidden'
 197     const subDivHttpText = document.createElement('span')
 198     subDivHttpText.classList.add('peers-number')
 199     subDivHttpText.textContent = 'HTTP'
 200     const subDivFallbackText = document.createElement('span')
 201     subDivFallbackText.classList.add('peers-text')
 202     subDivFallbackText.textContent = ' fallback'
 203
 204     subDivHttp.appendChild(subDivHttpText)
 205     subDivHttp.appendChild(subDivFallbackText)
 206     div.appendChild(subDivHttp)
 207
 208     this.player_.peertube().on('torrentInfo', (event, data) => {
 209       // We are in HTTP fallback
 210       if (!data) {
 211         subDivHttp.className = 'vjs-peertube-displayed'
 212         subDivWebtorrent.className = 'vjs-peertube-hidden'
 213
 214         return
 215       }
 216
 217       const downloadSpeed = bytes(data.downloadSpeed)
 218       const uploadSpeed = bytes(data.uploadSpeed)
 219       const numPeers = data.numPeers
 220
 221       downloadSpeedNumber.textContent = downloadSpeed[ 0 ]
 222       downloadSpeedUnit.textContent = ' ' + downloadSpeed[ 1 ]
 223
 224       uploadSpeedNumber.textContent = uploadSpeed[ 0 ]
 225       uploadSpeedUnit.textContent = ' ' + uploadSpeed[ 1 ]
 226
 227       peersNumber.textContent = numPeers
 228       peersText.textContent = ' peers'
 229
 230       subDivHttp.className = 'vjs-peertube-hidden'
 231       subDivWebtorrent.className = 'vjs-peertube-displayed'
 232     })
 233
 234     return div
 235   }
 236 }
 237 Button.registerComponent('WebTorrentButton', WebTorrentButton)
 238
 239 const Plugin: VideoJSComponentInterface = videojsUntyped.getPlugin('plugin')
 240 class PeerTubePlugin extends Plugin {
 241   private player: any
 242   private currentVideoFile: VideoFile
 243   private playerElement: HTMLVideoElement
 244   private videoFiles: VideoFile[]
 245   private torrent: WebTorrent.Torrent
 246   private autoplay = false
 247   private videoViewUrl: string
 248   private videoDuration: number
 249   private videoViewInterval
 250   private torrentInfoInterval
 251   private savePlayerSrcFunction: Function
 252
 253   constructor (player: videojs.Player, options: PeertubePluginOptions) {
 254     super(player, options)
 255
 256     // Fix canplay event on google chrome by disabling default videojs autoplay
 257     this.autoplay = this.player.options_.autoplay
 258     this.player.options_.autoplay = false
 259
 260     this.videoFiles = options.videoFiles
 261     this.videoViewUrl = options.videoViewUrl
 262     this.videoDuration = options.videoDuration
 263
 264     this.savePlayerSrcFunction = this.player.src
 265     // Hack to "simulate" src link in video.js >= 6
 266     // Without this, we can't play the video after pausing it
 267     // https://github.com/videojs/video.js/blob/master/src/js/player.js#L1633
 268     this.player.src = () => true
 269
 270     this.playerElement = options.playerElement
 271
 272     this.player.ready(() => {
 273       this.initializePlayer(options)
 274       this.runTorrentInfoScheduler()
 275       this.runViewAdd()
 276     })
 277   }
 278
 279   dispose () {
 280     clearInterval(this.videoViewInterval)
 281     clearInterval(this.torrentInfoInterval)
 282
 283     // Don't need to destroy renderer, video player will be destroyed
 284     this.flushVideoFile(this.currentVideoFile, false)
 285   }
 286
 287   getCurrentResolutionId () {
 288     return this.currentVideoFile ? this.currentVideoFile.resolution.id : -1
 289   }
 290
 291   getCurrentResolutionLabel () {
 292     return this.currentVideoFile ? this.currentVideoFile.resolution.label : ''
 293   }
 294
 295   updateVideoFile (videoFile?: VideoFile, done?: () => void) {
 296     if (done === undefined) {
 297       done = () => { /* empty */ }
 298     }
 299
 300     // Pick the first one
 301     if (videoFile === undefined) {
 302       videoFile = this.videoFiles[0]
 303     }
 304
 305     // Don't add the same video file once again
 306     if (this.currentVideoFile !== undefined && this.currentVideoFile.magnetUri === videoFile.magnetUri) {
 307       return
 308     }
 309
 310     // Do not display error to user because we will have multiple fallbacks
 311     this.disableErrorDisplay()
 312
 313     this.player.src = () => true
 314     this.player.playbackRate(1)
 315
 316     const previousVideoFile = this.currentVideoFile
 317     this.currentVideoFile = videoFile
 318
 319     this.addTorrent(this.currentVideoFile.magnetUri, previousVideoFile, done)
 320
 321     this.trigger('videoFileUpdate')
 322   }
 323
 324   addTorrent (magnetOrTorrentUrl: string, previousVideoFile: VideoFile, done: Function) {
 325     console.log('Adding ' + magnetOrTorrentUrl + '.')
 326
 327     this.torrent = webtorrent.add(magnetOrTorrentUrl, torrent => {
 328       console.log('Added ' + magnetOrTorrentUrl + '.')
 329
 330       this.flushVideoFile(previousVideoFile)
 331
 332       const options = { autoplay: true, controls: true }
 333       renderVideo(torrent.files[0], this.playerElement, options,(err, renderer) => {
 334         if (err) return this.fallbackToHttp()
 335
 336         this.renderer = renderer
 337         if (!this.player.paused()) {
 338           const playPromise = this.player.play()
 339           if (playPromise !== undefined) return playPromise.then(done)
 340
 341           return done()
 342         }
 343
 344         return done()
 345       })
 346     })
 347
 348     this.torrent.on('error', err => this.handleError(err))
 349
 350     this.torrent.on('warning', (err: any) => {
 351       // We don't support HTTP tracker but we don't care -> we use the web socket tracker
 352       if (err.message.indexOf('Unsupported tracker protocol') !== -1) return
 353
 354       // Users don't care about issues with WebRTC, but developers do so log it in the console
 355       if (err.message.indexOf('Ice connection failed') !== -1) {
 356         console.error(err)
 357         return
 358       }
 359
 360       // Magnet hash is not up to date with the torrent file, add directly the torrent file
 361       if (err.message.indexOf('incorrect info hash') !== -1) {
 362         console.error('Incorrect info hash detected, falling back to torrent file.')
 363         return this.addTorrent(this.torrent['xs'], previousVideoFile, done)
 364       }
 365
 366       return this.handleError(err)
 367     })
 368   }
 369
 370   updateResolution (resolutionId: number) {
 371     // Remember player state
 372     const currentTime = this.player.currentTime()
 373     const isPaused = this.player.paused()
 374
 375     // Remove poster to have black background
 376     this.playerElement.poster = ''
 377
 378     // Hide bigPlayButton
 379     if (!isPaused) {
 380       this.player.bigPlayButton.hide()
 381     }
 382
 383     const newVideoFile = this.videoFiles.find(f => f.resolution.id === resolutionId)
 384     this.updateVideoFile(newVideoFile, () => {
 385       this.player.currentTime(currentTime)
 386       this.player.handleTechSeeked_()
 387     })
 388   }
 389
 390   flushVideoFile (videoFile: VideoFile, destroyRenderer = true) {
 391     if (videoFile !== undefined && webtorrent.get(videoFile.magnetUri)) {
 392       if (destroyRenderer === true && this.renderer && this.renderer.destroy) this.renderer.destroy()
 393
 394       webtorrent.remove(videoFile.magnetUri)
 395       console.log('Removed ' + videoFile.magnetUri)
 396     }
 397   }
 398
 399   setVideoFiles (files: VideoFile[], videoViewUrl: string, videoDuration: number) {
 400     this.videoViewUrl = videoViewUrl
 401     this.videoDuration = videoDuration
 402     this.videoFiles = files
 403
 404     // Re run view add for the new video
 405     this.runViewAdd()
 406     this.updateVideoFile(undefined, () => this.player.play())
 407   }
 408
 409   private initializePlayer (options: PeertubePluginOptions) {
 410     if (this.autoplay === true) {
 411       this.updateVideoFile(undefined, () => this.player.play())
 412     } else {
 413       this.player.one('play', () => {
 414         this.player.pause()
 415         this.updateVideoFile(undefined, () => this.player.play())
 416       })
 417     }
 418   }
 419
 420   private runTorrentInfoScheduler () {
 421     this.torrentInfoInterval = setInterval(() => {
 422       // Not initialized yet
 423       if (this.torrent === undefined) return
 424
 425       // Http fallback
 426       if (this.torrent === null) return this.trigger('torrentInfo', false)
 427
 428       return this.trigger('torrentInfo', {
 429         downloadSpeed: this.torrent.downloadSpeed,
 430         numPeers: this.torrent.numPeers,
 431         uploadSpeed: this.torrent.uploadSpeed
 432       })
 433     }, 1000)
 434   }
 435
 436   private runViewAdd () {
 437     this.clearVideoViewInterval()
 438
 439     // After 30 seconds (or 3/4 of the video), add a view to the video
 440     let minSecondsToView = 30
 441
 442     if (this.videoDuration < minSecondsToView) minSecondsToView = (this.videoDuration * 3) / 4
 443
 444     let secondsViewed = 0
 445     this.videoViewInterval = setInterval(() => {
 446       if (this.player && !this.player.paused()) {
 447         secondsViewed += 1
 448
 449         if (secondsViewed > minSecondsToView) {
 450           this.clearVideoViewInterval()
 451
 452           this.addViewToVideo().catch(err => console.error(err))
 453         }
 454       }
 455     }, 1000)
 456   }
 457
 458   private clearVideoViewInterval () {
 459     if (this.videoViewInterval !== undefined) {
 460       clearInterval(this.videoViewInterval)
 461       this.videoViewInterval = undefined
 462     }
 463   }
 464
 465   private addViewToVideo () {
 466     return fetch(this.videoViewUrl, { method: 'POST' })
 467   }
 468
 469   private fallbackToHttp () {
 470     this.flushVideoFile(this.currentVideoFile, true)
 471     this.torrent = null
 472
 473     // Enable error display now this is our last fallback
 474     this.player.one('error', () => this.enableErrorDisplay())
 475
 476     const httpUrl = this.currentVideoFile.fileUrl
 477     this.player.src = this.savePlayerSrcFunction
 478     this.player.src(httpUrl)
 479     this.player.play()
 480   }
 481
 482   private handleError (err: Error | string) {
 483     return this.player.trigger('customError', { err })
 484   }
 485
 486   private enableErrorDisplay () {
 487     this.player.addClass('vjs-error-display-enabled')
 488   }
 489
 490   private disableErrorDisplay () {
 491     this.player.removeClass('vjs-error-display-enabled')
 492   }
 493 }
 494 videojsUntyped.registerPlugin('peertube', PeerTubePlugin)