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           urls: 'stun:stun.l.google.com:19302'
  59         }
  60       ]
  61     }
  62   },
  63   dht: false
  64 })
  65
  66 const MenuItem: VideoJSComponentInterface = videojsUntyped.getComponent('MenuItem')
  67 class ResolutionMenuItem extends MenuItem {
  68
  69   constructor (player: videojs.Player, options) {
  70     options.selectable = true
  71     super(player, options)
  72
  73     const currentResolutionId = this.player_.peertube().getCurrentResolutionId()
  74     this.selected(this.options_.id === currentResolutionId)
  75   }
  76
  77   handleClick (event) {
  78     super.handleClick(event)
  79
  80     this.player_.peertube().updateResolution(this.options_.id)
  81   }
  82 }
  83 MenuItem.registerComponent('ResolutionMenuItem', ResolutionMenuItem)
  84
  85 const MenuButton: VideoJSComponentInterface = videojsUntyped.getComponent('MenuButton')
  86 class ResolutionMenuButton extends MenuButton {
  87   label: HTMLElement
  88
  89   constructor (player: videojs.Player, options) {
  90     options.label = 'Quality'
  91     super(player, options)
  92
  93     this.label = document.createElement('span')
  94
  95     this.el().setAttribute('aria-label', 'Quality')
  96     this.controlText('Quality')
  97
  98     videojsUntyped.dom.addClass(this.label, 'vjs-resolution-button-label')
  99     this.el().appendChild(this.label)
 100
 101     player.peertube().on('videoFileUpdate', () => this.update())
 102   }
 103
 104   createItems () {
 105     const menuItems = []
 106     for (const videoFile of this.player_.peertube().videoFiles) {
 107       menuItems.push(new ResolutionMenuItem(
 108         this.player_,
 109         {
 110           id: videoFile.resolution.id,
 111           label: videoFile.resolution.label,
 112           src: videoFile.magnetUri,
 113           selected: videoFile.resolution.id === this.currentSelectionId
 114         })
 115       )
 116     }
 117
 118     return menuItems
 119   }
 120
 121   update () {
 122     if (!this.label) return
 123
 124     this.label.innerHTML = this.player_.peertube().getCurrentResolutionLabel()
 125     this.hide()
 126     return super.update()
 127   }
 128
 129   buildCSSClass () {
 130     return super.buildCSSClass() + ' vjs-resolution-button'
 131   }
 132 }
 133 MenuButton.registerComponent('ResolutionMenuButton', ResolutionMenuButton)
 134
 135 const Button: VideoJSComponentInterface = videojsUntyped.getComponent('Button')
 136 class PeerTubeLinkButton extends Button {
 137
 138   createEl () {
 139     const link = document.createElement('a')
 140     link.href = window.location.href.replace('embed', 'watch')
 141     link.innerHTML = 'PeerTube'
 142     link.title = 'Go to the video page'
 143     link.className = 'vjs-peertube-link'
 144     link.target = '_blank'
 145
 146     return link
 147   }
 148
 149   handleClick () {
 150     this.player_.pause()
 151   }
 152 }
 153 Button.registerComponent('PeerTubeLinkButton', PeerTubeLinkButton)
 154
 155 class WebTorrentButton extends Button {
 156   createEl () {
 157     const div = document.createElement('div')
 158     const subDivWebtorrent = document.createElement('div')
 159     div.appendChild(subDivWebtorrent)
 160
 161     const downloadIcon = document.createElement('span')
 162     downloadIcon.classList.add('icon', 'icon-download')
 163     subDivWebtorrent.appendChild(downloadIcon)
 164
 165     const downloadSpeedText = document.createElement('span')
 166     downloadSpeedText.classList.add('download-speed-text')
 167     const downloadSpeedNumber = document.createElement('span')
 168     downloadSpeedNumber.classList.add('download-speed-number')
 169     const downloadSpeedUnit = document.createElement('span')
 170     downloadSpeedText.appendChild(downloadSpeedNumber)
 171     downloadSpeedText.appendChild(downloadSpeedUnit)
 172     subDivWebtorrent.appendChild(downloadSpeedText)
 173
 174     const uploadIcon = document.createElement('span')
 175     uploadIcon.classList.add('icon', 'icon-upload')
 176     subDivWebtorrent.appendChild(uploadIcon)
 177
 178     const uploadSpeedText = document.createElement('span')
 179     uploadSpeedText.classList.add('upload-speed-text')
 180     const uploadSpeedNumber = document.createElement('span')
 181     uploadSpeedNumber.classList.add('upload-speed-number')
 182     const uploadSpeedUnit = document.createElement('span')
 183     uploadSpeedText.appendChild(uploadSpeedNumber)
 184     uploadSpeedText.appendChild(uploadSpeedUnit)
 185     subDivWebtorrent.appendChild(uploadSpeedText)
 186
 187     const peersText = document.createElement('span')
 188     peersText.classList.add('peers-text')
 189     const peersNumber = document.createElement('span')
 190     peersNumber.classList.add('peers-number')
 191     subDivWebtorrent.appendChild(peersNumber)
 192     subDivWebtorrent.appendChild(peersText)
 193
 194     div.className = 'vjs-peertube'
 195     // Hide the stats before we get the info
 196     subDivWebtorrent.className = 'vjs-peertube-hidden'
 197
 198     const subDivHttp = document.createElement('div')
 199     subDivHttp.className = 'vjs-peertube-hidden'
 200     const subDivHttpText = document.createElement('span')
 201     subDivHttpText.classList.add('peers-number')
 202     subDivHttpText.textContent = 'HTTP'
 203     const subDivFallbackText = document.createElement('span')
 204     subDivFallbackText.classList.add('peers-text')
 205     subDivFallbackText.textContent = ' fallback'
 206
 207     subDivHttp.appendChild(subDivHttpText)
 208     subDivHttp.appendChild(subDivFallbackText)
 209     div.appendChild(subDivHttp)
 210
 211     this.player_.peertube().on('torrentInfo', (event, data) => {
 212       // We are in HTTP fallback
 213       if (!data) {
 214         subDivHttp.className = 'vjs-peertube-displayed'
 215         subDivWebtorrent.className = 'vjs-peertube-hidden'
 216
 217         return
 218       }
 219
 220       const downloadSpeed = bytes(data.downloadSpeed)
 221       const uploadSpeed = bytes(data.uploadSpeed)
 222       const numPeers = data.numPeers
 223
 224       downloadSpeedNumber.textContent = downloadSpeed[ 0 ]
 225       downloadSpeedUnit.textContent = ' ' + downloadSpeed[ 1 ]
 226
 227       uploadSpeedNumber.textContent = uploadSpeed[ 0 ]
 228       uploadSpeedUnit.textContent = ' ' + uploadSpeed[ 1 ]
 229
 230       peersNumber.textContent = numPeers
 231       peersText.textContent = ' peers'
 232
 233       subDivHttp.className = 'vjs-peertube-hidden'
 234       subDivWebtorrent.className = 'vjs-peertube-displayed'
 235     })
 236
 237     return div
 238   }
 239 }
 240 Button.registerComponent('WebTorrentButton', WebTorrentButton)
 241
 242 const Plugin: VideoJSComponentInterface = videojsUntyped.getPlugin('plugin')
 243 class PeerTubePlugin extends Plugin {
 244   private player: any
 245   private currentVideoFile: VideoFile
 246   private playerElement: HTMLVideoElement
 247   private videoFiles: VideoFile[]
 248   private torrent: WebTorrent.Torrent
 249   private autoplay = false
 250   private videoViewUrl: string
 251   private videoDuration: number
 252   private videoViewInterval
 253   private torrentInfoInterval
 254   private savePlayerSrcFunction: Function
 255
 256   constructor (player: videojs.Player, options: PeertubePluginOptions) {
 257     super(player, options)
 258
 259     // Fix canplay event on google chrome by disabling default videojs autoplay
 260     this.autoplay = this.player.options_.autoplay
 261     this.player.options_.autoplay = false
 262
 263     this.videoFiles = options.videoFiles
 264     this.videoViewUrl = options.videoViewUrl
 265     this.videoDuration = options.videoDuration
 266
 267     this.savePlayerSrcFunction = this.player.src
 268     // Hack to "simulate" src link in video.js >= 6
 269     // Without this, we can't play the video after pausing it
 270     // https://github.com/videojs/video.js/blob/master/src/js/player.js#L1633
 271     this.player.src = () => true
 272
 273     this.playerElement = options.playerElement
 274
 275     this.player.ready(() => {
 276       this.initializePlayer(options)
 277       this.runTorrentInfoScheduler()
 278       this.runViewAdd()
 279     })
 280   }
 281
 282   dispose () {
 283     clearInterval(this.videoViewInterval)
 284     clearInterval(this.torrentInfoInterval)
 285
 286     // Don't need to destroy renderer, video player will be destroyed
 287     this.flushVideoFile(this.currentVideoFile, false)
 288   }
 289
 290   getCurrentResolutionId () {
 291     return this.currentVideoFile ? this.currentVideoFile.resolution.id : -1
 292   }
 293
 294   getCurrentResolutionLabel () {
 295     return this.currentVideoFile ? this.currentVideoFile.resolution.label : ''
 296   }
 297
 298   updateVideoFile (videoFile?: VideoFile, done?: () => void) {
 299     if (done === undefined) {
 300       done = () => { /* empty */ }
 301     }
 302
 303     // Pick the first one
 304     if (videoFile === undefined) {
 305       videoFile = this.videoFiles[0]
 306     }
 307
 308     // Don't add the same video file once again
 309     if (this.currentVideoFile !== undefined && this.currentVideoFile.magnetUri === videoFile.magnetUri) {
 310       return
 311     }
 312
 313     // Do not display error to user because we will have multiple fallbacks
 314     this.disableErrorDisplay()
 315
 316     this.player.src = () => true
 317     this.player.playbackRate(1)
 318
 319     const previousVideoFile = this.currentVideoFile
 320     this.currentVideoFile = videoFile
 321
 322     this.addTorrent(this.currentVideoFile.magnetUri, previousVideoFile, done)
 323
 324     this.trigger('videoFileUpdate')
 325   }
 326
 327   addTorrent (magnetOrTorrentUrl: string, previousVideoFile: VideoFile, done: Function) {
 328     console.log('Adding ' + magnetOrTorrentUrl + '.')
 329
 330     this.torrent = webtorrent.add(magnetOrTorrentUrl, torrent => {
 331       console.log('Added ' + magnetOrTorrentUrl + '.')
 332
 333       this.flushVideoFile(previousVideoFile)
 334
 335       const options = { autoplay: true, controls: true }
 336       renderVideo(torrent.files[0], this.playerElement, options,(err, renderer) => {
 337         if (err) return this.fallbackToHttp()
 338
 339         this.renderer = renderer
 340         if (!this.player.paused()) {
 341           const playPromise = this.player.play()
 342           if (playPromise !== undefined) return playPromise.then(done)
 343
 344           return done()
 345         }
 346
 347         return done()
 348       })
 349     })
 350
 351     this.torrent.on('error', err => this.handleError(err))
 352
 353     this.torrent.on('warning', (err: any) => {
 354       // We don't support HTTP tracker but we don't care -> we use the web socket tracker
 355       if (err.message.indexOf('Unsupported tracker protocol') !== -1) return
 356
 357       // Users don't care about issues with WebRTC, but developers do so log it in the console
 358       if (err.message.indexOf('Ice connection failed') !== -1) {
 359         console.error(err)
 360         return
 361       }
 362
 363       // Magnet hash is not up to date with the torrent file, add directly the torrent file
 364       if (err.message.indexOf('incorrect info hash') !== -1) {
 365         console.error('Incorrect info hash detected, falling back to torrent file.')
 366         return this.addTorrent(this.torrent['xs'], previousVideoFile, done)
 367       }
 368
 369       return this.handleError(err)
 370     })
 371   }
 372
 373   updateResolution (resolutionId: number) {
 374     // Remember player state
 375     const currentTime = this.player.currentTime()
 376     const isPaused = this.player.paused()
 377
 378     // Remove poster to have black background
 379     this.playerElement.poster = ''
 380
 381     // Hide bigPlayButton
 382     if (!isPaused) {
 383       this.player.bigPlayButton.hide()
 384     }
 385
 386     const newVideoFile = this.videoFiles.find(f => f.resolution.id === resolutionId)
 387     this.updateVideoFile(newVideoFile, () => {
 388       this.player.currentTime(currentTime)
 389       this.player.handleTechSeeked_()
 390     })
 391   }
 392
 393   flushVideoFile (videoFile: VideoFile, destroyRenderer = true) {
 394     if (videoFile !== undefined && webtorrent.get(videoFile.magnetUri)) {
 395       if (destroyRenderer === true && this.renderer && this.renderer.destroy) this.renderer.destroy()
 396
 397       webtorrent.remove(videoFile.magnetUri)
 398       console.log('Removed ' + videoFile.magnetUri)
 399     }
 400   }
 401
 402   setVideoFiles (files: VideoFile[], videoViewUrl: string, videoDuration: number) {
 403     this.videoViewUrl = videoViewUrl
 404     this.videoDuration = videoDuration
 405     this.videoFiles = files
 406
 407     // Re run view add for the new video
 408     this.runViewAdd()
 409     this.updateVideoFile(undefined, () => this.player.play())
 410   }
 411
 412   private initializePlayer (options: PeertubePluginOptions) {
 413     if (this.autoplay === true) {
 414       this.updateVideoFile(undefined, () => this.player.play())
 415     } else {
 416       this.player.one('play', () => {
 417         this.player.pause()
 418         this.updateVideoFile(undefined, () => this.player.play())
 419       })
 420     }
 421   }
 422
 423   private runTorrentInfoScheduler () {
 424     this.torrentInfoInterval = setInterval(() => {
 425       // Not initialized yet
 426       if (this.torrent === undefined) return
 427
 428       // Http fallback
 429       if (this.torrent === null) return this.trigger('torrentInfo', false)
 430
 431       return this.trigger('torrentInfo', {
 432         downloadSpeed: this.torrent.downloadSpeed,
 433         numPeers: this.torrent.numPeers,
 434         uploadSpeed: this.torrent.uploadSpeed
 435       })
 436     }, 1000)
 437   }
 438
 439   private runViewAdd () {
 440     this.clearVideoViewInterval()
 441
 442     // After 30 seconds (or 3/4 of the video), add a view to the video
 443     let minSecondsToView = 30
 444
 445     if (this.videoDuration < minSecondsToView) minSecondsToView = (this.videoDuration * 3) / 4
 446
 447     let secondsViewed = 0
 448     this.videoViewInterval = setInterval(() => {
 449       if (this.player && !this.player.paused()) {
 450         secondsViewed += 1
 451
 452         if (secondsViewed > minSecondsToView) {
 453           this.clearVideoViewInterval()
 454
 455           this.addViewToVideo().catch(err => console.error(err))
 456         }
 457       }
 458     }, 1000)
 459   }
 460
 461   private clearVideoViewInterval () {
 462     if (this.videoViewInterval !== undefined) {
 463       clearInterval(this.videoViewInterval)
 464       this.videoViewInterval = undefined
 465     }
 466   }
 467
 468   private addViewToVideo () {
 469     return fetch(this.videoViewUrl, { method: 'POST' })
 470   }
 471
 472   private fallbackToHttp () {
 473     this.flushVideoFile(this.currentVideoFile, true)
 474     this.torrent = null
 475
 476     // Enable error display now this is our last fallback
 477     this.player.one('error', () => this.enableErrorDisplay())
 478
 479     const httpUrl = this.currentVideoFile.fileUrl
 480     this.player.src = this.savePlayerSrcFunction
 481     this.player.src(httpUrl)
 482     this.player.play()
 483   }
 484
 485   private handleError (err: Error | string) {
 486     return this.player.trigger('customError', { err })
 487   }
 488
 489   private enableErrorDisplay () {
 490     this.player.addClass('vjs-error-display-enabled')
 491   }
 492
 493   private disableErrorDisplay () {
 494     this.player.removeClass('vjs-error-display-enabled')
 495   }
 496 }
 497 videojsUntyped.registerPlugin('peertube', PeerTubePlugin)