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