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 { VideoFile } from '../../../../shared/models/videos/video.model'
   6 import { renderVideo } from './video-renderer'
   7
   8 declare module 'video.js' {
   9   interface Player {
  10     peertube (): PeerTubePlugin
  11   }
  12 }
  13
  14 interface VideoJSComponentInterface {
  15   _player: videojs.Player
  16
  17   new (player: videojs.Player, options?: any)
  18
  19   registerComponent (name: string, obj: any)
  20 }
  21
  22 type PeertubePluginOptions = {
  23   videoFiles: VideoFile[]
  24   playerElement: HTMLVideoElement
  25   peerTubeLink: boolean
  26 }
  27
  28 // https://github.com/danrevah/ngx-pipes/blob/master/src/pipes/math/bytes.ts
  29 // Don't import all Angular stuff, just copy the code with shame
  30 const dictionaryBytes: Array<{max: number, type: string}> = [
  31   { max: 1024, type: 'B' },
  32   { max: 1048576, type: 'KB' },
  33   { max: 1073741824, type: 'MB' },
  34   { max: 1.0995116e12, type: 'GB' }
  35 ]
  36 function bytes (value) {
  37   const format = dictionaryBytes.find(d => value < d.max) || dictionaryBytes[dictionaryBytes.length - 1]
  38   const calc = Math.floor(value / (format.max / 1024)).toString()
  39
  40   return [ calc, format.type ]
  41 }
  42
  43 // videojs typings don't have some method we need
  44 const videojsUntyped = videojs as any
  45 const webtorrent = new WebTorrent({ dht: false })
  46
  47 const MenuItem: VideoJSComponentInterface = videojsUntyped.getComponent('MenuItem')
  48 class ResolutionMenuItem extends MenuItem {
  49
  50   constructor (player: videojs.Player, options) {
  51     options.selectable = true
  52     super(player, options)
  53
  54     const currentResolution = this.player_.peertube().getCurrentResolution()
  55     this.selected(this.options_.id === currentResolution)
  56   }
  57
  58   handleClick (event) {
  59     super.handleClick(event)
  60
  61     this.player_.peertube().updateResolution(this.options_.id)
  62   }
  63 }
  64 MenuItem.registerComponent('ResolutionMenuItem', ResolutionMenuItem)
  65
  66 const MenuButton: VideoJSComponentInterface = videojsUntyped.getComponent('MenuButton')
  67 class ResolutionMenuButton extends MenuButton {
  68   label: HTMLElement
  69
  70   constructor (player: videojs.Player, options) {
  71     options.label = 'Quality'
  72     super(player, options)
  73
  74     this.label = document.createElement('span')
  75
  76     this.el().setAttribute('aria-label', 'Quality')
  77     this.controlText('Quality')
  78
  79     videojsUntyped.dom.addClass(this.label, 'vjs-resolution-button-label')
  80     this.el().appendChild(this.label)
  81
  82     player.peertube().on('videoFileUpdate', () => this.update())
  83   }
  84
  85   createItems () {
  86     const menuItems = []
  87     for (const videoFile of this.player_.peertube().videoFiles) {
  88       menuItems.push(new ResolutionMenuItem(
  89         this.player_,
  90         {
  91           id: videoFile.resolution,
  92           label: videoFile.resolutionLabel,
  93           src: videoFile.magnetUri,
  94           selected: videoFile.resolution === this.currentSelection
  95         })
  96       )
  97     }
  98
  99     return menuItems
 100   }
 101
 102   update () {
 103     if (!this.label) return
 104
 105     this.label.innerHTML = this.player_.peertube().getCurrentResolutionLabel()
 106     this.hide()
 107     return super.update()
 108   }
 109
 110   buildCSSClass () {
 111     return super.buildCSSClass() + ' vjs-resolution-button'
 112   }
 113
 114   dispose () {
 115     this.parentNode.removeChild(this)
 116   }
 117 }
 118 MenuButton.registerComponent('ResolutionMenuButton', ResolutionMenuButton)
 119
 120 const Button: VideoJSComponentInterface = videojsUntyped.getComponent('Button')
 121 class PeertubeLinkButton extends Button {
 122
 123   createEl () {
 124     const link = document.createElement('a')
 125     link.href = window.location.href.replace('embed', 'watch')
 126     link.innerHTML = 'PeerTube'
 127     link.title = 'Go to the video page'
 128     link.className = 'vjs-peertube-link'
 129     link.target = '_blank'
 130
 131     return link
 132   }
 133
 134   handleClick () {
 135     this.player_.pause()
 136   }
 137
 138   dispose () {
 139     this.parentNode.removeChild(this)
 140   }
 141 }
 142 Button.registerComponent('PeerTubeLinkButton', PeertubeLinkButton)
 143
 144 class WebTorrentButton extends Button {
 145   createEl () {
 146     const div = document.createElement('div')
 147     const subDiv = document.createElement('div')
 148     div.appendChild(subDiv)
 149
 150     const downloadIcon = document.createElement('span')
 151     downloadIcon.classList.add('icon', 'icon-download')
 152     subDiv.appendChild(downloadIcon)
 153
 154     const downloadSpeedText = document.createElement('span')
 155     downloadSpeedText.classList.add('download-speed-text')
 156     const downloadSpeedNumber = document.createElement('span')
 157     downloadSpeedNumber.classList.add('download-speed-number')
 158     const downloadSpeedUnit = document.createElement('span')
 159     downloadSpeedText.appendChild(downloadSpeedNumber)
 160     downloadSpeedText.appendChild(downloadSpeedUnit)
 161     subDiv.appendChild(downloadSpeedText)
 162
 163     const uploadIcon = document.createElement('span')
 164     uploadIcon.classList.add('icon', 'icon-upload')
 165     subDiv.appendChild(uploadIcon)
 166
 167     const uploadSpeedText = document.createElement('span')
 168     uploadSpeedText.classList.add('upload-speed-text')
 169     const uploadSpeedNumber = document.createElement('span')
 170     uploadSpeedNumber.classList.add('upload-speed-number')
 171     const uploadSpeedUnit = document.createElement('span')
 172     uploadSpeedText.appendChild(uploadSpeedNumber)
 173     uploadSpeedText.appendChild(uploadSpeedUnit)
 174     subDiv.appendChild(uploadSpeedText)
 175
 176     const peersText = document.createElement('span')
 177     peersText.textContent = ' peers'
 178     peersText.classList.add('peers-text')
 179     const peersNumber = document.createElement('span')
 180     peersNumber.classList.add('peers-number')
 181     subDiv.appendChild(peersNumber)
 182     subDiv.appendChild(peersText)
 183
 184     div.className = 'vjs-webtorrent'
 185     // Hide the stats before we get the info
 186     subDiv.className = 'vjs-webtorrent-hidden'
 187
 188     this.player_.peertube().on('torrentInfo', (event, data) => {
 189       const downloadSpeed = bytes(data.downloadSpeed)
 190       const uploadSpeed = bytes(data.uploadSpeed)
 191       const numPeers = data.numPeers
 192
 193       downloadSpeedNumber.textContent = downloadSpeed[0]
 194       downloadSpeedUnit.textContent = ' ' + downloadSpeed[1]
 195
 196       uploadSpeedNumber.textContent = uploadSpeed[0]
 197       uploadSpeedUnit.textContent = ' ' + uploadSpeed[1]
 198
 199       peersNumber.textContent = numPeers
 200
 201       subDiv.className = 'vjs-webtorrent-displayed'
 202     })
 203
 204     return div
 205   }
 206
 207   dispose () {
 208     this.parentNode.removeChild(this)
 209   }
 210 }
 211 Button.registerComponent('WebTorrentButton', WebTorrentButton)
 212
 213 const Plugin: VideoJSComponentInterface = videojsUntyped.getPlugin('plugin')
 214 class PeerTubePlugin extends Plugin {
 215   private player: any
 216   private currentVideoFile: VideoFile
 217   private playerElement: HTMLVideoElement
 218   private videoFiles: VideoFile[]
 219   private torrent: WebTorrent.Torrent
 220
 221   constructor (player: videojs.Player, options: PeertubePluginOptions) {
 222     super(player, options)
 223
 224     this.videoFiles = options.videoFiles
 225
 226     // Hack to "simulate" src link in video.js >= 6
 227     // Without this, we can't play the video after pausing it
 228     // https://github.com/videojs/video.js/blob/master/src/js/player.js#L1633
 229     this.player.src = function () {
 230       return true
 231     }
 232
 233     this.playerElement = options.playerElement
 234
 235     this.player.ready(() => {
 236       this.initializePlayer(options)
 237       this.runTorrentInfoScheduler()
 238     })
 239   }
 240
 241   dispose () {
 242     // Don't need to destroy renderer, video player will be destroyed
 243     this.flushVideoFile(this.currentVideoFile, false)
 244   }
 245
 246   getCurrentResolution () {
 247     return this.currentVideoFile ? this.currentVideoFile.resolution : -1
 248   }
 249
 250   getCurrentResolutionLabel () {
 251     return this.currentVideoFile ? this.currentVideoFile.resolutionLabel : ''
 252   }
 253
 254   updateVideoFile (videoFile?: VideoFile, done?: () => void) {
 255     if (done === undefined) {
 256       done = () => { /* empty */ }
 257     }
 258
 259     // Pick the first one
 260     if (videoFile === undefined) {
 261       videoFile = this.videoFiles[0]
 262     }
 263
 264     // Don't add the same video file once again
 265     if (this.currentVideoFile !== undefined && this.currentVideoFile.magnetUri === videoFile.magnetUri) {
 266       return
 267     }
 268
 269     const previousVideoFile = this.currentVideoFile
 270     this.currentVideoFile = videoFile
 271
 272     console.log('Adding ' + videoFile.magnetUri + '.')
 273     this.torrent = webtorrent.add(videoFile.magnetUri, torrent => {
 274       console.log('Added ' + videoFile.magnetUri + '.')
 275
 276       this.flushVideoFile(previousVideoFile)
 277
 278       const options = { autoplay: true, controls: true }
 279       renderVideo(torrent.files[0], this.playerElement, options,(err, renderer) => {
 280         if (err) return this.handleError(err)
 281
 282         this.renderer = renderer
 283         if (!this.player.paused()) this.player.play().then(done)
 284       })
 285     })
 286
 287     this.torrent.on('error', err => this.handleError(err))
 288     this.torrent.on('warning', (err: any) => {
 289       // We don't support HTTP tracker but we don't care -> we use the web socket tracker
 290       if (err.message.indexOf('Unsupported tracker protocol') !== -1) return
 291       // Users don't care about issues with WebRTC, but developers do so log it in the console
 292       if (err.message.indexOf('Ice connection failed') !== -1) {
 293         console.error(err)
 294         return
 295       }
 296
 297       return this.handleError(err)
 298     })
 299
 300     this.trigger('videoFileUpdate')
 301   }
 302
 303   updateResolution (resolution) {
 304     // Remember player state
 305     const currentTime = this.player.currentTime()
 306     const isPaused = this.player.paused()
 307
 308     // Remove poster to have black background
 309     this.playerElement.poster = ''
 310
 311     // Hide bigPlayButton
 312     if (!isPaused) {
 313       this.player.bigPlayButton.hide()
 314     }
 315
 316     const newVideoFile = this.videoFiles.find(f => f.resolution === resolution)
 317     this.updateVideoFile(newVideoFile, () => {
 318       this.player.currentTime(currentTime)
 319       this.player.handleTechSeeked_()
 320     })
 321   }
 322
 323   flushVideoFile (videoFile: VideoFile, destroyRenderer = true) {
 324     if (videoFile !== undefined && webtorrent.get(videoFile.magnetUri)) {
 325       if (destroyRenderer === true) this.renderer.destroy()
 326       webtorrent.remove(videoFile.magnetUri)
 327       console.log('Removed ' + videoFile.magnetUri)
 328     }
 329   }
 330
 331   setVideoFiles (files: VideoFile[]) {
 332     this.videoFiles = files
 333
 334     this.updateVideoFile(undefined, () => this.player.play())
 335   }
 336
 337   private initializePlayer (options: PeertubePluginOptions) {
 338     const controlBar = this.player.controlBar
 339
 340     const menuButton = new ResolutionMenuButton(this.player, options)
 341     const fullscreenElement = controlBar.fullscreenToggle.el()
 342     controlBar.resolutionSwitcher = controlBar.el().insertBefore(menuButton.el(), fullscreenElement)
 343
 344     if (options.peerTubeLink === true) {
 345       const peerTubeLinkButton = new PeertubeLinkButton(this.player)
 346       controlBar.peerTubeLink = controlBar.el().insertBefore(peerTubeLinkButton.el(), fullscreenElement)
 347     }
 348
 349     const webTorrentButton = new WebTorrentButton(this.player)
 350     controlBar.webTorrent = controlBar.el().insertBefore(webTorrentButton.el(), controlBar.progressControl.el())
 351
 352     if (this.player.options_.autoplay === true) {
 353       this.updateVideoFile()
 354     } else {
 355       this.player.one('play', () => {
 356         // On firefox, we need to wait to load the video before playing
 357         if (navigator.userAgent.toLowerCase().indexOf('firefox') !== -1) {
 358           this.player.pause()
 359           this.updateVideoFile(undefined, () => this.player.play())
 360           return
 361         }
 362
 363         this.updateVideoFile(undefined)
 364       })
 365     }
 366   }
 367
 368   private runTorrentInfoScheduler () {
 369     setInterval(() => {
 370       if (this.torrent !== undefined) {
 371         this.trigger('torrentInfo', {
 372           downloadSpeed: this.torrent.downloadSpeed,
 373           numPeers: this.torrent.numPeers,
 374           uploadSpeed: this.torrent.uploadSpeed
 375         })
 376       }
 377     }, 1000)
 378   }
 379
 380   private handleError (err: Error | string) {
 381     return this.player.trigger('customError', { err })
 382   }
 383 }
 384 videojsUntyped.registerPlugin('peertube', PeerTubePlugin)