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1 | import videojs from 'video.js' | |
2 | import * as WebTorrent from 'webtorrent' | |
3 | import { timeToInt } from '@shared/core-utils' | |
4 | import { VideoFile } from '@shared/models' | |
5 | import { | |
6 | getAverageBandwidthInStore, | |
7 | getStoredMute, | |
8 | getStoredP2PEnabled, | |
9 | getStoredVolume, | |
10 | saveAverageBandwidth | |
11 | } from '../peertube-player-local-storage' | |
12 | import { LoadedQualityData, PlayerNetworkInfo, WebtorrentPluginOptions } from '../peertube-videojs-typings' | |
13 | import { getRtcConfig, isIOS, videoFileMaxByResolution, videoFileMinByResolution } from '../utils' | |
14 | import { PeertubeChunkStore } from './peertube-chunk-store' | |
15 | import { renderVideo } from './video-renderer' | |
16 | ||
17 | const CacheChunkStore = require('cache-chunk-store') | |
18 | ||
19 | type PlayOptions = { | |
20 | forcePlay?: boolean, | |
21 | seek?: number, | |
22 | delay?: number | |
23 | } | |
24 | ||
25 | const Plugin = videojs.getPlugin('plugin') | |
26 | ||
27 | class WebTorrentPlugin extends Plugin { | |
28 | readonly videoFiles: VideoFile[] | |
29 | ||
30 | private readonly playerElement: HTMLVideoElement | |
31 | ||
32 | private readonly autoplay: boolean = false | |
33 | private readonly startTime: number = 0 | |
34 | private readonly savePlayerSrcFunction: videojs.Player['src'] | |
35 | private readonly videoDuration: number | |
36 | private readonly CONSTANTS = { | |
37 | INFO_SCHEDULER: 1000, // Don't change this | |
38 | AUTO_QUALITY_SCHEDULER: 3000, // Check quality every 3 seconds | |
39 | AUTO_QUALITY_THRESHOLD_PERCENT: 30, // Bandwidth should be 30% more important than a resolution bitrate to change to it | |
40 | AUTO_QUALITY_OBSERVATION_TIME: 10000, // Wait 10 seconds after having change the resolution before another check | |
41 | AUTO_QUALITY_HIGHER_RESOLUTION_DELAY: 5000, // Buffering higher resolution during 5 seconds | |
42 | BANDWIDTH_AVERAGE_NUMBER_OF_VALUES: 5 // Last 5 seconds to build average bandwidth | |
43 | } | |
44 | ||
45 | private readonly webtorrent = new WebTorrent({ | |
46 | tracker: { | |
47 | rtcConfig: getRtcConfig() | |
48 | }, | |
49 | dht: false | |
50 | }) | |
51 | ||
52 | private currentVideoFile: VideoFile | |
53 | private torrent: WebTorrent.Torrent | |
54 | ||
55 | private renderer: any | |
56 | private fakeRenderer: any | |
57 | private destroyingFakeRenderer = false | |
58 | ||
59 | private autoResolution = true | |
60 | private autoResolutionPossible = true | |
61 | private isAutoResolutionObservation = false | |
62 | private playerRefusedP2P = false | |
63 | ||
64 | private torrentInfoInterval: any | |
65 | private autoQualityInterval: any | |
66 | private addTorrentDelay: any | |
67 | private qualityObservationTimer: any | |
68 | private runAutoQualitySchedulerTimer: any | |
69 | ||
70 | private downloadSpeeds: number[] = [] | |
71 | ||
72 | constructor (player: videojs.Player, options?: WebtorrentPluginOptions) { | |
73 | super(player) | |
74 | ||
75 | this.startTime = timeToInt(options.startTime) | |
76 | ||
77 | // Disable auto play on iOS | |
78 | this.autoplay = options.autoplay | |
79 | this.playerRefusedP2P = !getStoredP2PEnabled() | |
80 | ||
81 | this.videoFiles = options.videoFiles | |
82 | this.videoDuration = options.videoDuration | |
83 | ||
84 | this.savePlayerSrcFunction = this.player.src | |
85 | this.playerElement = options.playerElement | |
86 | ||
87 | this.player.ready(() => { | |
88 | const playerOptions = this.player.options_ | |
89 | ||
90 | const volume = getStoredVolume() | |
91 | if (volume !== undefined) this.player.volume(volume) | |
92 | ||
93 | const muted = playerOptions.muted !== undefined ? playerOptions.muted : getStoredMute() | |
94 | if (muted !== undefined) this.player.muted(muted) | |
95 | ||
96 | this.player.duration(options.videoDuration) | |
97 | ||
98 | this.initializePlayer() | |
99 | this.runTorrentInfoScheduler() | |
100 | ||
101 | this.player.one('play', () => { | |
102 | // Don't run immediately scheduler, wait some seconds the TCP connections are made | |
103 | this.runAutoQualitySchedulerTimer = setTimeout(() => this.runAutoQualityScheduler(), this.CONSTANTS.AUTO_QUALITY_SCHEDULER) | |
104 | }) | |
105 | }) | |
106 | } | |
107 | ||
108 | dispose () { | |
109 | clearTimeout(this.addTorrentDelay) | |
110 | clearTimeout(this.qualityObservationTimer) | |
111 | clearTimeout(this.runAutoQualitySchedulerTimer) | |
112 | ||
113 | clearInterval(this.torrentInfoInterval) | |
114 | clearInterval(this.autoQualityInterval) | |
115 | ||
116 | // Don't need to destroy renderer, video player will be destroyed | |
117 | this.flushVideoFile(this.currentVideoFile, false) | |
118 | ||
119 | this.destroyFakeRenderer() | |
120 | } | |
121 | ||
122 | getCurrentResolutionId () { | |
123 | return this.currentVideoFile ? this.currentVideoFile.resolution.id : -1 | |
124 | } | |
125 | ||
126 | updateVideoFile ( | |
127 | videoFile?: VideoFile, | |
128 | options: { | |
129 | forcePlay?: boolean, | |
130 | seek?: number, | |
131 | delay?: number | |
132 | } = {}, | |
133 | done: () => void = () => { /* empty */ } | |
134 | ) { | |
135 | // Automatically choose the adapted video file | |
136 | if (!videoFile) { | |
137 | const savedAverageBandwidth = getAverageBandwidthInStore() | |
138 | videoFile = savedAverageBandwidth | |
139 | ? this.getAppropriateFile(savedAverageBandwidth) | |
140 | : this.pickAverageVideoFile() | |
141 | } | |
142 | ||
143 | if (!videoFile) { | |
144 | throw Error(`Can't update video file since videoFile is undefined.`) | |
145 | } | |
146 | ||
147 | // Don't add the same video file once again | |
148 | if (this.currentVideoFile !== undefined && this.currentVideoFile.magnetUri === videoFile.magnetUri) { | |
149 | return | |
150 | } | |
151 | ||
152 | // Do not display error to user because we will have multiple fallback | |
153 | this.disableErrorDisplay(); | |
154 | ||
155 | // Hack to "simulate" src link in video.js >= 6 | |
156 | // Without this, we can't play the video after pausing it | |
157 | // https://github.com/videojs/video.js/blob/master/src/js/player.js#L1633 | |
158 | (this.player as any).src = () => true | |
159 | const oldPlaybackRate = this.player.playbackRate() | |
160 | ||
161 | const previousVideoFile = this.currentVideoFile | |
162 | this.currentVideoFile = videoFile | |
163 | ||
164 | // Don't try on iOS that does not support MediaSource | |
165 | // Or don't use P2P if webtorrent is disabled | |
166 | if (isIOS() || this.playerRefusedP2P) { | |
167 | return this.fallbackToHttp(options, () => { | |
168 | this.player.playbackRate(oldPlaybackRate) | |
169 | return done() | |
170 | }) | |
171 | } | |
172 | ||
173 | this.addTorrent(this.currentVideoFile.magnetUri, previousVideoFile, options, () => { | |
174 | this.player.playbackRate(oldPlaybackRate) | |
175 | return done() | |
176 | }) | |
177 | ||
178 | this.changeQuality() | |
179 | this.trigger('resolutionChange', { auto: this.autoResolution, resolutionId: this.currentVideoFile.resolution.id }) | |
180 | } | |
181 | ||
182 | updateResolution (resolutionId: number, delay = 0) { | |
183 | // Remember player state | |
184 | const currentTime = this.player.currentTime() | |
185 | const isPaused = this.player.paused() | |
186 | ||
187 | // Hide bigPlayButton | |
188 | if (!isPaused) { | |
189 | this.player.bigPlayButton.hide() | |
190 | } | |
191 | ||
192 | // Audio-only (resolutionId === 0) gets special treatment | |
193 | if (resolutionId === 0) { | |
194 | // Audio-only: show poster, do not auto-hide controls | |
195 | this.player.addClass('vjs-playing-audio-only-content') | |
196 | this.player.posterImage.show() | |
197 | } else { | |
198 | // Hide poster to have black background | |
199 | this.player.removeClass('vjs-playing-audio-only-content') | |
200 | this.player.posterImage.hide() | |
201 | } | |
202 | ||
203 | const newVideoFile = this.videoFiles.find(f => f.resolution.id === resolutionId) | |
204 | const options = { | |
205 | forcePlay: false, | |
206 | delay, | |
207 | seek: currentTime + (delay / 1000) | |
208 | } | |
209 | ||
210 | this.updateVideoFile(newVideoFile, options) | |
211 | } | |
212 | ||
213 | flushVideoFile (videoFile: VideoFile, destroyRenderer = true) { | |
214 | if (videoFile !== undefined && this.webtorrent.get(videoFile.magnetUri)) { | |
215 | if (destroyRenderer === true && this.renderer && this.renderer.destroy) this.renderer.destroy() | |
216 | ||
217 | this.webtorrent.remove(videoFile.magnetUri) | |
218 | console.log('Removed ' + videoFile.magnetUri) | |
219 | } | |
220 | } | |
221 | ||
222 | enableAutoResolution () { | |
223 | this.autoResolution = true | |
224 | this.trigger('resolutionChange', { auto: this.autoResolution, resolutionId: this.getCurrentResolutionId() }) | |
225 | } | |
226 | ||
227 | disableAutoResolution (forbid = false) { | |
228 | if (forbid === true) this.autoResolutionPossible = false | |
229 | ||
230 | this.autoResolution = false | |
231 | this.trigger('autoResolutionChange', { possible: this.autoResolutionPossible }) | |
232 | this.trigger('resolutionChange', { auto: this.autoResolution, resolutionId: this.getCurrentResolutionId() }) | |
233 | } | |
234 | ||
235 | isAutoResolutionPossible () { | |
236 | return this.autoResolutionPossible | |
237 | } | |
238 | ||
239 | getTorrent () { | |
240 | return this.torrent | |
241 | } | |
242 | ||
243 | getCurrentVideoFile () { | |
244 | return this.currentVideoFile | |
245 | } | |
246 | ||
247 | private addTorrent ( | |
248 | magnetOrTorrentUrl: string, | |
249 | previousVideoFile: VideoFile, | |
250 | options: PlayOptions, | |
251 | done: Function | |
252 | ) { | |
253 | if (!magnetOrTorrentUrl) return this.fallbackToHttp(options, done) | |
254 | ||
255 | console.log('Adding ' + magnetOrTorrentUrl + '.') | |
256 | ||
257 | const oldTorrent = this.torrent | |
258 | const torrentOptions = { | |
259 | // Don't use arrow function: it breaks webtorrent (that uses `new` keyword) | |
260 | store: function (chunkLength: number, storeOpts: any) { | |
261 | return new CacheChunkStore(new PeertubeChunkStore(chunkLength, storeOpts), { | |
262 | max: 100 | |
263 | }) | |
264 | } | |
265 | } | |
266 | ||
267 | this.torrent = this.webtorrent.add(magnetOrTorrentUrl, torrentOptions, torrent => { | |
268 | console.log('Added ' + magnetOrTorrentUrl + '.') | |
269 | ||
270 | if (oldTorrent) { | |
271 | // Pause the old torrent | |
272 | this.stopTorrent(oldTorrent) | |
273 | ||
274 | // We use a fake renderer so we download correct pieces of the next file | |
275 | if (options.delay) this.renderFileInFakeElement(torrent.files[ 0 ], options.delay) | |
276 | } | |
277 | ||
278 | // Render the video in a few seconds? (on resolution change for example, we wait some seconds of the new video resolution) | |
279 | this.addTorrentDelay = setTimeout(() => { | |
280 | // We don't need the fake renderer anymore | |
281 | this.destroyFakeRenderer() | |
282 | ||
283 | const paused = this.player.paused() | |
284 | ||
285 | this.flushVideoFile(previousVideoFile) | |
286 | ||
287 | // Update progress bar (just for the UI), do not wait rendering | |
288 | if (options.seek) this.player.currentTime(options.seek) | |
289 | ||
290 | const renderVideoOptions = { autoplay: false, controls: true } | |
291 | renderVideo(torrent.files[ 0 ], this.playerElement, renderVideoOptions, (err, renderer) => { | |
292 | this.renderer = renderer | |
293 | ||
294 | if (err) return this.fallbackToHttp(options, done) | |
295 | ||
296 | return this.tryToPlay(err => { | |
297 | if (err) return done(err) | |
298 | ||
299 | if (options.seek) this.seek(options.seek) | |
300 | if (options.forcePlay === false && paused === true) this.player.pause() | |
301 | ||
302 | return done() | |
303 | }) | |
304 | }) | |
305 | }, options.delay || 0) | |
306 | }) | |
307 | ||
308 | this.torrent.on('error', (err: any) => console.error(err)) | |
309 | ||
310 | this.torrent.on('warning', (err: any) => { | |
311 | // We don't support HTTP tracker but we don't care -> we use the web socket tracker | |
312 | if (err.message.indexOf('Unsupported tracker protocol') !== -1) return | |
313 | ||
314 | // Users don't care about issues with WebRTC, but developers do so log it in the console | |
315 | if (err.message.indexOf('Ice connection failed') !== -1) { | |
316 | console.log(err) | |
317 | return | |
318 | } | |
319 | ||
320 | // Magnet hash is not up to date with the torrent file, add directly the torrent file | |
321 | if (err.message.indexOf('incorrect info hash') !== -1) { | |
322 | console.error('Incorrect info hash detected, falling back to torrent file.') | |
323 | const newOptions = { forcePlay: true, seek: options.seek } | |
324 | return this.addTorrent(this.torrent[ 'xs' ], previousVideoFile, newOptions, done) | |
325 | } | |
326 | ||
327 | // Remote instance is down | |
328 | if (err.message.indexOf('from xs param') !== -1) { | |
329 | this.handleError(err) | |
330 | } | |
331 | ||
332 | console.warn(err) | |
333 | }) | |
334 | } | |
335 | ||
336 | private tryToPlay (done?: (err?: Error) => void) { | |
337 | if (!done) done = function () { /* empty */ } | |
338 | ||
339 | const playPromise = this.player.play() | |
340 | if (playPromise !== undefined) { | |
341 | return playPromise.then(() => done()) | |
342 | .catch((err: Error) => { | |
343 | if (err.message.indexOf('The play() request was interrupted by a call to pause()') !== -1) { | |
344 | return | |
345 | } | |
346 | ||
347 | console.error(err) | |
348 | this.player.pause() | |
349 | this.player.posterImage.show() | |
350 | this.player.removeClass('vjs-has-autoplay') | |
351 | this.player.removeClass('vjs-has-big-play-button-clicked') | |
352 | this.player.removeClass('vjs-playing-audio-only-content') | |
353 | ||
354 | return done() | |
355 | }) | |
356 | } | |
357 | ||
358 | return done() | |
359 | } | |
360 | ||
361 | private seek (time: number) { | |
362 | this.player.currentTime(time) | |
363 | this.player.handleTechSeeked_() | |
364 | } | |
365 | ||
366 | private getAppropriateFile (averageDownloadSpeed?: number): VideoFile { | |
367 | if (this.videoFiles === undefined) return undefined | |
368 | ||
369 | const files = this.videoFiles.filter(f => f.resolution.id !== 0) | |
370 | ||
371 | if (files.length === 0) return undefined | |
372 | if (files.length === 1) return files[0] | |
373 | ||
374 | // Don't change the torrent if the player ended | |
375 | if (this.torrent && this.torrent.progress === 1 && this.player.ended()) return this.currentVideoFile | |
376 | ||
377 | if (!averageDownloadSpeed) averageDownloadSpeed = this.getAndSaveActualDownloadSpeed() | |
378 | ||
379 | // Limit resolution according to player height | |
380 | const playerHeight = this.playerElement.offsetHeight | |
381 | ||
382 | // We take the first resolution just above the player height | |
383 | // Example: player height is 530px, we want the 720p file instead of 480p | |
384 | let maxResolution = files[0].resolution.id | |
385 | for (let i = files.length - 1; i >= 0; i--) { | |
386 | const resolutionId = files[i].resolution.id | |
387 | if (resolutionId !== 0 && resolutionId >= playerHeight) { | |
388 | maxResolution = resolutionId | |
389 | break | |
390 | } | |
391 | } | |
392 | ||
393 | // Filter videos we can play according to our screen resolution and bandwidth | |
394 | const filteredFiles = files.filter(f => f.resolution.id <= maxResolution) | |
395 | .filter(f => { | |
396 | const fileBitrate = (f.size / this.videoDuration) | |
397 | let threshold = fileBitrate | |
398 | ||
399 | // If this is for a higher resolution or an initial load: add a margin | |
400 | if (!this.currentVideoFile || f.resolution.id > this.currentVideoFile.resolution.id) { | |
401 | threshold += ((fileBitrate * this.CONSTANTS.AUTO_QUALITY_THRESHOLD_PERCENT) / 100) | |
402 | } | |
403 | ||
404 | return averageDownloadSpeed > threshold | |
405 | }) | |
406 | ||
407 | // If the download speed is too bad, return the lowest resolution we have | |
408 | if (filteredFiles.length === 0) return videoFileMinByResolution(files) | |
409 | ||
410 | return videoFileMaxByResolution(filteredFiles) | |
411 | } | |
412 | ||
413 | private getAndSaveActualDownloadSpeed () { | |
414 | const start = Math.max(this.downloadSpeeds.length - this.CONSTANTS.BANDWIDTH_AVERAGE_NUMBER_OF_VALUES, 0) | |
415 | const lastDownloadSpeeds = this.downloadSpeeds.slice(start, this.downloadSpeeds.length) | |
416 | if (lastDownloadSpeeds.length === 0) return -1 | |
417 | ||
418 | const sum = lastDownloadSpeeds.reduce((a, b) => a + b) | |
419 | const averageBandwidth = Math.round(sum / lastDownloadSpeeds.length) | |
420 | ||
421 | // Save the average bandwidth for future use | |
422 | saveAverageBandwidth(averageBandwidth) | |
423 | ||
424 | return averageBandwidth | |
425 | } | |
426 | ||
427 | private initializePlayer () { | |
428 | this.buildQualities() | |
429 | ||
430 | if (this.autoplay) { | |
431 | this.player.posterImage.hide() | |
432 | ||
433 | return this.updateVideoFile(undefined, { forcePlay: true, seek: this.startTime }) | |
434 | } | |
435 | ||
436 | // Proxy first play | |
437 | const oldPlay = this.player.play.bind(this.player); | |
438 | (this.player as any).play = () => { | |
439 | this.player.addClass('vjs-has-big-play-button-clicked') | |
440 | this.player.play = oldPlay | |
441 | ||
442 | this.updateVideoFile(undefined, { forcePlay: true, seek: this.startTime }) | |
443 | } | |
444 | } | |
445 | ||
446 | private runAutoQualityScheduler () { | |
447 | this.autoQualityInterval = setInterval(() => { | |
448 | ||
449 | // Not initialized or in HTTP fallback | |
450 | if (this.torrent === undefined || this.torrent === null) return | |
451 | if (this.autoResolution === false) return | |
452 | if (this.isAutoResolutionObservation === true) return | |
453 | ||
454 | const file = this.getAppropriateFile() | |
455 | let changeResolution = false | |
456 | let changeResolutionDelay = 0 | |
457 | ||
458 | // Lower resolution | |
459 | if (this.isPlayerWaiting() && file.resolution.id < this.currentVideoFile.resolution.id) { | |
460 | console.log('Downgrading automatically the resolution to: %s', file.resolution.label) | |
461 | changeResolution = true | |
462 | } else if (file.resolution.id > this.currentVideoFile.resolution.id) { // Higher resolution | |
463 | console.log('Upgrading automatically the resolution to: %s', file.resolution.label) | |
464 | changeResolution = true | |
465 | changeResolutionDelay = this.CONSTANTS.AUTO_QUALITY_HIGHER_RESOLUTION_DELAY | |
466 | } | |
467 | ||
468 | if (changeResolution === true) { | |
469 | this.updateResolution(file.resolution.id, changeResolutionDelay) | |
470 | ||
471 | // Wait some seconds in observation of our new resolution | |
472 | this.isAutoResolutionObservation = true | |
473 | ||
474 | this.qualityObservationTimer = setTimeout(() => { | |
475 | this.isAutoResolutionObservation = false | |
476 | }, this.CONSTANTS.AUTO_QUALITY_OBSERVATION_TIME) | |
477 | } | |
478 | }, this.CONSTANTS.AUTO_QUALITY_SCHEDULER) | |
479 | } | |
480 | ||
481 | private isPlayerWaiting () { | |
482 | return this.player && this.player.hasClass('vjs-waiting') | |
483 | } | |
484 | ||
485 | private runTorrentInfoScheduler () { | |
486 | this.torrentInfoInterval = setInterval(() => { | |
487 | // Not initialized yet | |
488 | if (this.torrent === undefined) return | |
489 | ||
490 | // Http fallback | |
491 | if (this.torrent === null) return this.player.trigger('p2pInfo', false) | |
492 | ||
493 | // this.webtorrent.downloadSpeed because we need to take into account the potential old torrent too | |
494 | if (this.webtorrent.downloadSpeed !== 0) this.downloadSpeeds.push(this.webtorrent.downloadSpeed) | |
495 | ||
496 | return this.player.trigger('p2pInfo', { | |
497 | source: 'webtorrent', | |
498 | http: { | |
499 | downloadSpeed: 0, | |
500 | uploadSpeed: 0, | |
501 | downloaded: 0, | |
502 | uploaded: 0 | |
503 | }, | |
504 | p2p: { | |
505 | downloadSpeed: this.torrent.downloadSpeed, | |
506 | numPeers: this.torrent.numPeers, | |
507 | uploadSpeed: this.torrent.uploadSpeed, | |
508 | downloaded: this.torrent.downloaded, | |
509 | uploaded: this.torrent.uploaded | |
510 | }, | |
511 | bandwidthEstimate: this.webtorrent.downloadSpeed | |
512 | } as PlayerNetworkInfo) | |
513 | }, this.CONSTANTS.INFO_SCHEDULER) | |
514 | } | |
515 | ||
516 | private fallbackToHttp (options: PlayOptions, done?: Function) { | |
517 | const paused = this.player.paused() | |
518 | ||
519 | this.disableAutoResolution(true) | |
520 | ||
521 | this.flushVideoFile(this.currentVideoFile, true) | |
522 | this.torrent = null | |
523 | ||
524 | // Enable error display now this is our last fallback | |
525 | this.player.one('error', () => this.enableErrorDisplay()) | |
526 | ||
527 | const httpUrl = this.currentVideoFile.fileUrl | |
528 | this.player.src = this.savePlayerSrcFunction | |
529 | this.player.src(httpUrl) | |
530 | ||
531 | this.changeQuality() | |
532 | ||
533 | // We changed the source, so reinit captions | |
534 | this.player.trigger('sourcechange') | |
535 | ||
536 | return this.tryToPlay(err => { | |
537 | if (err && done) return done(err) | |
538 | ||
539 | if (options.seek) this.seek(options.seek) | |
540 | if (options.forcePlay === false && paused === true) this.player.pause() | |
541 | ||
542 | if (done) return done() | |
543 | }) | |
544 | } | |
545 | ||
546 | private handleError (err: Error | string) { | |
547 | return this.player.trigger('customError', { err }) | |
548 | } | |
549 | ||
550 | private enableErrorDisplay () { | |
551 | this.player.addClass('vjs-error-display-enabled') | |
552 | } | |
553 | ||
554 | private disableErrorDisplay () { | |
555 | this.player.removeClass('vjs-error-display-enabled') | |
556 | } | |
557 | ||
558 | private pickAverageVideoFile () { | |
559 | if (this.videoFiles.length === 1) return this.videoFiles[0] | |
560 | ||
561 | const files = this.videoFiles.filter(f => f.resolution.id !== 0) | |
562 | return files[Math.floor(files.length / 2)] | |
563 | } | |
564 | ||
565 | private stopTorrent (torrent: WebTorrent.Torrent) { | |
566 | torrent.pause() | |
567 | // Pause does not remove actual peers (in particular the webseed peer) | |
568 | torrent.removePeer(torrent[ 'ws' ]) | |
569 | } | |
570 | ||
571 | private renderFileInFakeElement (file: WebTorrent.TorrentFile, delay: number) { | |
572 | this.destroyingFakeRenderer = false | |
573 | ||
574 | const fakeVideoElem = document.createElement('video') | |
575 | renderVideo(file, fakeVideoElem, { autoplay: false, controls: false }, (err, renderer) => { | |
576 | this.fakeRenderer = renderer | |
577 | ||
578 | // The renderer returns an error when we destroy it, so skip them | |
579 | if (this.destroyingFakeRenderer === false && err) { | |
580 | console.error('Cannot render new torrent in fake video element.', err) | |
581 | } | |
582 | ||
583 | // Load the future file at the correct time (in delay MS - 2 seconds) | |
584 | fakeVideoElem.currentTime = this.player.currentTime() + (delay - 2000) | |
585 | }) | |
586 | } | |
587 | ||
588 | private destroyFakeRenderer () { | |
589 | if (this.fakeRenderer) { | |
590 | this.destroyingFakeRenderer = true | |
591 | ||
592 | if (this.fakeRenderer.destroy) { | |
593 | try { | |
594 | this.fakeRenderer.destroy() | |
595 | } catch (err) { | |
596 | console.log('Cannot destroy correctly fake renderer.', err) | |
597 | } | |
598 | } | |
599 | this.fakeRenderer = undefined | |
600 | } | |
601 | } | |
602 | ||
603 | private buildQualities () { | |
604 | const qualityLevelsPayload = [] | |
605 | ||
606 | for (const file of this.videoFiles) { | |
607 | const representation = { | |
608 | id: file.resolution.id, | |
609 | label: this.buildQualityLabel(file), | |
610 | height: file.resolution.id, | |
611 | _enabled: true | |
612 | } | |
613 | ||
614 | this.player.qualityLevels().addQualityLevel(representation) | |
615 | ||
616 | qualityLevelsPayload.push({ | |
617 | id: representation.id, | |
618 | label: representation.label, | |
619 | selected: false | |
620 | }) | |
621 | } | |
622 | ||
623 | const payload: LoadedQualityData = { | |
624 | qualitySwitchCallback: (d: any) => this.qualitySwitchCallback(d), | |
625 | qualityData: { | |
626 | video: qualityLevelsPayload | |
627 | } | |
628 | } | |
629 | this.player.tech(true).trigger('loadedqualitydata', payload) | |
630 | } | |
631 | ||
632 | private buildQualityLabel (file: VideoFile) { | |
633 | let label = file.resolution.label | |
634 | ||
635 | if (file.fps && file.fps >= 50) { | |
636 | label += file.fps | |
637 | } | |
638 | ||
639 | return label | |
640 | } | |
641 | ||
642 | private qualitySwitchCallback (id: number) { | |
643 | if (id === -1) { | |
644 | if (this.autoResolutionPossible === true) this.enableAutoResolution() | |
645 | return | |
646 | } | |
647 | ||
648 | this.disableAutoResolution() | |
649 | this.updateResolution(id) | |
650 | } | |
651 | ||
652 | private changeQuality () { | |
653 | const resolutionId = this.currentVideoFile.resolution.id as number | |
654 | const qualityLevels = this.player.qualityLevels() | |
655 | ||
656 | if (resolutionId === -1) { | |
657 | qualityLevels.selectedIndex = -1 | |
658 | return | |
659 | } | |
660 | ||
661 | for (let i = 0; i < qualityLevels.length; i++) { | |
662 | const q = qualityLevels[i] | |
663 | if (q.height === resolutionId) qualityLevels.selectedIndex_ = i | |
664 | } | |
665 | } | |
666 | } | |
667 | ||
668 | videojs.registerPlugin('webtorrent', WebTorrentPlugin) | |
669 | export { WebTorrentPlugin } |