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

   1 // Big thanks to: https://github.com/kmoskwiak/videojs-resolution-switcher
   2
   3 import { VideoService } from '@app/shared/video/video.service'
   4 import * as videojs from 'video.js'
   5 import * as WebTorrent from 'webtorrent'
   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   peerTubeLink: boolean
  27   videoViewUrl: string
  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 currentResolution = this.player_.peertube().getCurrentResolution()
  57     this.selected(this.options_.id === currentResolution)
  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,
  94           label: videoFile.resolutionLabel,
  95           src: videoFile.magnetUri,
  96           selected: videoFile.resolution === this.currentSelection
  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   dispose () {
 117     this.parentNode.removeChild(this)
 118   }
 119 }
 120 MenuButton.registerComponent('ResolutionMenuButton', ResolutionMenuButton)
 121
 122 const Button: VideoJSComponentInterface = videojsUntyped.getComponent('Button')
 123 class PeertubeLinkButton extends Button {
 124
 125   createEl () {
 126     const link = document.createElement('a')
 127     link.href = window.location.href.replace('embed', 'watch')
 128     link.innerHTML = 'PeerTube'
 129     link.title = 'Go to the video page'
 130     link.className = 'vjs-peertube-link'
 131     link.target = '_blank'
 132
 133     return link
 134   }
 135
 136   handleClick () {
 137     this.player_.pause()
 138   }
 139
 140   dispose () {
 141     this.parentNode.removeChild(this)
 142   }
 143 }
 144 Button.registerComponent('PeerTubeLinkButton', PeertubeLinkButton)
 145
 146 class WebTorrentButton extends Button {
 147   createEl () {
 148     const div = document.createElement('div')
 149     const subDiv = document.createElement('div')
 150     div.appendChild(subDiv)
 151
 152     const downloadIcon = document.createElement('span')
 153     downloadIcon.classList.add('icon', 'icon-download')
 154     subDiv.appendChild(downloadIcon)
 155
 156     const downloadSpeedText = document.createElement('span')
 157     downloadSpeedText.classList.add('download-speed-text')
 158     const downloadSpeedNumber = document.createElement('span')
 159     downloadSpeedNumber.classList.add('download-speed-number')
 160     const downloadSpeedUnit = document.createElement('span')
 161     downloadSpeedText.appendChild(downloadSpeedNumber)
 162     downloadSpeedText.appendChild(downloadSpeedUnit)
 163     subDiv.appendChild(downloadSpeedText)
 164
 165     const uploadIcon = document.createElement('span')
 166     uploadIcon.classList.add('icon', 'icon-upload')
 167     subDiv.appendChild(uploadIcon)
 168
 169     const uploadSpeedText = document.createElement('span')
 170     uploadSpeedText.classList.add('upload-speed-text')
 171     const uploadSpeedNumber = document.createElement('span')
 172     uploadSpeedNumber.classList.add('upload-speed-number')
 173     const uploadSpeedUnit = document.createElement('span')
 174     uploadSpeedText.appendChild(uploadSpeedNumber)
 175     uploadSpeedText.appendChild(uploadSpeedUnit)
 176     subDiv.appendChild(uploadSpeedText)
 177
 178     const peersText = document.createElement('span')
 179     peersText.textContent = ' peers'
 180     peersText.classList.add('peers-text')
 181     const peersNumber = document.createElement('span')
 182     peersNumber.classList.add('peers-number')
 183     subDiv.appendChild(peersNumber)
 184     subDiv.appendChild(peersText)
 185
 186     div.className = 'vjs-webtorrent'
 187     // Hide the stats before we get the info
 188     subDiv.className = 'vjs-webtorrent-hidden'
 189
 190     this.player_.peertube().on('torrentInfo', (event, data) => {
 191       const downloadSpeed = bytes(data.downloadSpeed)
 192       const uploadSpeed = bytes(data.uploadSpeed)
 193       const numPeers = data.numPeers
 194
 195       downloadSpeedNumber.textContent = downloadSpeed[0]
 196       downloadSpeedUnit.textContent = ' ' + downloadSpeed[1]
 197
 198       uploadSpeedNumber.textContent = uploadSpeed[0]
 199       uploadSpeedUnit.textContent = ' ' + uploadSpeed[1]
 200
 201       peersNumber.textContent = numPeers
 202
 203       subDiv.className = 'vjs-webtorrent-displayed'
 204     })
 205
 206     return div
 207   }
 208
 209   dispose () {
 210     this.parentNode.removeChild(this)
 211   }
 212 }
 213 Button.registerComponent('WebTorrentButton', WebTorrentButton)
 214
 215 const Plugin: VideoJSComponentInterface = videojsUntyped.getPlugin('plugin')
 216 class PeerTubePlugin extends Plugin {
 217   private player: any
 218   private currentVideoFile: VideoFile
 219   private playerElement: HTMLVideoElement
 220   private videoFiles: VideoFile[]
 221   private torrent: WebTorrent.Torrent
 222   private autoplay = false
 223   private videoViewUrl: string
 224   private videoViewInterval
 225
 226   constructor (player: videojs.Player, options: PeertubePluginOptions) {
 227     super(player, options)
 228
 229     // Fix canplay event on google chrome by disabling default videojs autoplay
 230     this.autoplay = this.player.options_.autoplay
 231     this.player.options_.autoplay = false
 232
 233     this.videoFiles = options.videoFiles
 234     this.videoViewUrl = options.videoViewUrl
 235
 236     // Hack to "simulate" src link in video.js >= 6
 237     // Without this, we can't play the video after pausing it
 238     // https://github.com/videojs/video.js/blob/master/src/js/player.js#L1633
 239     this.player.src = function () {
 240       return true
 241     }
 242
 243     this.playerElement = options.playerElement
 244
 245     this.player.ready(() => {
 246       this.initializePlayer(options)
 247       this.runTorrentInfoScheduler()
 248       this.prepareRunViewAdd()
 249     })
 250   }
 251
 252   dispose () {
 253     // Don't need to destroy renderer, video player will be destroyed
 254     this.flushVideoFile(this.currentVideoFile, false)
 255   }
 256
 257   getCurrentResolution () {
 258     return this.currentVideoFile ? this.currentVideoFile.resolution : -1
 259   }
 260
 261   getCurrentResolutionLabel () {
 262     return this.currentVideoFile ? this.currentVideoFile.resolutionLabel : ''
 263   }
 264
 265   updateVideoFile (videoFile?: VideoFile, done?: () => void) {
 266     if (done === undefined) {
 267       done = () => { /* empty */ }
 268     }
 269
 270     // Pick the first one
 271     if (videoFile === undefined) {
 272       videoFile = this.videoFiles[0]
 273     }
 274
 275     // Don't add the same video file once again
 276     if (this.currentVideoFile !== undefined && this.currentVideoFile.magnetUri === videoFile.magnetUri) {
 277       return
 278     }
 279
 280     const previousVideoFile = this.currentVideoFile
 281     this.currentVideoFile = videoFile
 282
 283     console.log('Adding ' + videoFile.magnetUri + '.')
 284     this.torrent = webtorrent.add(videoFile.magnetUri, torrent => {
 285       console.log('Added ' + videoFile.magnetUri + '.')
 286
 287       this.flushVideoFile(previousVideoFile)
 288
 289       const options = { autoplay: true, controls: true }
 290       renderVideo(torrent.files[0], this.playerElement, options,(err, renderer) => {
 291         if (err) return this.handleError(err)
 292
 293         this.renderer = renderer
 294         if (!this.player.paused()) this.player.play().then(done)
 295         else done()
 296       })
 297     })
 298
 299     this.torrent.on('error', err => this.handleError(err))
 300     this.torrent.on('warning', (err: any) => {
 301       // We don't support HTTP tracker but we don't care -> we use the web socket tracker
 302       if (err.message.indexOf('Unsupported tracker protocol') !== -1) return
 303       // Users don't care about issues with WebRTC, but developers do so log it in the console
 304       if (err.message.indexOf('Ice connection failed') !== -1) {
 305         console.error(err)
 306         return
 307       }
 308
 309       return this.handleError(err)
 310     })
 311
 312     this.trigger('videoFileUpdate')
 313   }
 314
 315   updateResolution (resolution) {
 316     // Remember player state
 317     const currentTime = this.player.currentTime()
 318     const isPaused = this.player.paused()
 319
 320     // Remove poster to have black background
 321     this.playerElement.poster = ''
 322
 323     // Hide bigPlayButton
 324     if (!isPaused) {
 325       this.player.bigPlayButton.hide()
 326     }
 327
 328     const newVideoFile = this.videoFiles.find(f => f.resolution === resolution)
 329     this.updateVideoFile(newVideoFile, () => {
 330       this.player.currentTime(currentTime)
 331       this.player.handleTechSeeked_()
 332     })
 333   }
 334
 335   flushVideoFile (videoFile: VideoFile, destroyRenderer = true) {
 336     if (videoFile !== undefined && webtorrent.get(videoFile.magnetUri)) {
 337       if (destroyRenderer === true) this.renderer.destroy()
 338       webtorrent.remove(videoFile.magnetUri)
 339       console.log('Removed ' + videoFile.magnetUri)
 340     }
 341   }
 342
 343   setVideoFiles (files: VideoFile[], videoViewUrl: string) {
 344     this.videoViewUrl = videoViewUrl
 345     this.videoFiles = files
 346
 347     // Re run view add for the new video
 348     this.prepareRunViewAdd()
 349     this.updateVideoFile(undefined, () => this.player.play())
 350   }
 351
 352   private initializePlayer (options: PeertubePluginOptions) {
 353     const controlBar = this.player.controlBar
 354
 355     const menuButton = new ResolutionMenuButton(this.player, options)
 356     const fullscreenElement = controlBar.fullscreenToggle.el()
 357     controlBar.resolutionSwitcher = controlBar.el().insertBefore(menuButton.el(), fullscreenElement)
 358
 359     if (options.peerTubeLink === true) {
 360       const peerTubeLinkButton = new PeertubeLinkButton(this.player)
 361       controlBar.peerTubeLink = controlBar.el().insertBefore(peerTubeLinkButton.el(), fullscreenElement)
 362     }
 363
 364     const webTorrentButton = new WebTorrentButton(this.player)
 365     controlBar.webTorrent = controlBar.el().insertBefore(webTorrentButton.el(), controlBar.progressControl.el())
 366
 367     if (this.autoplay === true) {
 368       this.updateVideoFile(undefined, () => this.player.play())
 369     } else {
 370       this.player.one('play', () => {
 371         this.player.pause()
 372         this.updateVideoFile(undefined, () => this.player.play())
 373       })
 374     }
 375   }
 376
 377   private runTorrentInfoScheduler () {
 378     setInterval(() => {
 379       if (this.torrent !== undefined) {
 380         this.trigger('torrentInfo', {
 381           downloadSpeed: this.torrent.downloadSpeed,
 382           numPeers: this.torrent.numPeers,
 383           uploadSpeed: this.torrent.uploadSpeed
 384         })
 385       }
 386     }, 1000)
 387   }
 388
 389   private prepareRunViewAdd () {
 390     if (this.player.readyState() < 1) {
 391       return this.player.one('loadedmetadata', () => this.runViewAdd())
 392     }
 393
 394     this.runViewAdd()
 395   }
 396
 397   private runViewAdd () {
 398     this.clearVideoViewInterval()
 399
 400     // After 30 seconds (or 3/4 of the video), add a view to the video
 401     let minSecondsToView = 30
 402
 403     const duration = this.player.duration()
 404     if (duration < minSecondsToView) minSecondsToView = (duration * 3) / 4
 405
 406     let secondsViewed = 0
 407     this.videoViewInterval = setInterval(() => {
 408       if (this.player && !this.player.paused()) {
 409         secondsViewed += 1
 410
 411         if (secondsViewed > minSecondsToView) {
 412           this.clearVideoViewInterval()
 413
 414           this.addViewToVideo().catch(err => console.error(err))
 415         }
 416       }
 417     }, 1000)
 418   }
 419
 420   private clearVideoViewInterval () {
 421     if (this.videoViewInterval !== undefined) {
 422       clearInterval(this.videoViewInterval)
 423       this.videoViewInterval = undefined
 424     }
 425   }
 426
 427   private addViewToVideo () {
 428     return fetch(this.videoViewUrl, { method: 'POST' })
 429   }
 430
 431   private handleError (err: Error | string) {
 432     return this.player.trigger('customError', { err })
 433   }
 434 }
 435 videojsUntyped.registerPlugin('peertube', PeerTubePlugin)