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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 { PeerTubeResolution, 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.selectAppropriateResolution(true) | |
179 | } | |
180 | ||
181 | updateEngineResolution (resolutionId: number, delay = 0) { | |
182 | // Remember player state | |
183 | const currentTime = this.player.currentTime() | |
184 | const isPaused = this.player.paused() | |
185 | ||
186 | // Hide bigPlayButton | |
187 | if (!isPaused) { | |
188 | this.player.bigPlayButton.hide() | |
189 | } | |
190 | ||
191 | // Audio-only (resolutionId === 0) gets special treatment | |
192 | if (resolutionId === 0) { | |
193 | // Audio-only: show poster, do not auto-hide controls | |
194 | this.player.addClass('vjs-playing-audio-only-content') | |
195 | this.player.posterImage.show() | |
196 | } else { | |
197 | // Hide poster to have black background | |
198 | this.player.removeClass('vjs-playing-audio-only-content') | |
199 | this.player.posterImage.hide() | |
200 | } | |
201 | ||
202 | const newVideoFile = this.videoFiles.find(f => f.resolution.id === resolutionId) | |
203 | const options = { | |
204 | forcePlay: false, | |
205 | delay, | |
206 | seek: currentTime + (delay / 1000) | |
207 | } | |
208 | ||
209 | this.updateVideoFile(newVideoFile, options) | |
210 | } | |
211 | ||
212 | flushVideoFile (videoFile: VideoFile, destroyRenderer = true) { | |
213 | if (videoFile !== undefined && this.webtorrent.get(videoFile.magnetUri)) { | |
214 | if (destroyRenderer === true && this.renderer && this.renderer.destroy) this.renderer.destroy() | |
215 | ||
216 | this.webtorrent.remove(videoFile.magnetUri) | |
217 | console.log('Removed ' + videoFile.magnetUri) | |
218 | } | |
219 | } | |
220 | ||
221 | disableAutoResolution () { | |
222 | this.autoResolution = false | |
223 | this.autoResolutionPossible = false | |
224 | this.player.peertubeResolutions().disableAutoResolution() | |
225 | } | |
226 | ||
227 | isAutoResolutionPossible () { | |
228 | return this.autoResolutionPossible | |
229 | } | |
230 | ||
231 | getTorrent () { | |
232 | return this.torrent | |
233 | } | |
234 | ||
235 | getCurrentVideoFile () { | |
236 | return this.currentVideoFile | |
237 | } | |
238 | ||
239 | changeQuality (id: number) { | |
240 | if (id === -1) { | |
241 | if (this.autoResolutionPossible === true) { | |
242 | this.autoResolution = true | |
243 | ||
244 | this.selectAppropriateResolution(false) | |
245 | } | |
246 | ||
247 | return | |
248 | } | |
249 | ||
250 | this.autoResolution = false | |
251 | this.updateEngineResolution(id) | |
252 | this.selectAppropriateResolution(false) | |
253 | } | |
254 | ||
255 | private addTorrent ( | |
256 | magnetOrTorrentUrl: string, | |
257 | previousVideoFile: VideoFile, | |
258 | options: PlayOptions, | |
259 | done: (err?: Error) => void | |
260 | ) { | |
261 | if (!magnetOrTorrentUrl) return this.fallbackToHttp(options, done) | |
262 | ||
263 | console.log('Adding ' + magnetOrTorrentUrl + '.') | |
264 | ||
265 | const oldTorrent = this.torrent | |
266 | const torrentOptions = { | |
267 | // Don't use arrow function: it breaks webtorrent (that uses `new` keyword) | |
268 | store: function (chunkLength: number, storeOpts: any) { | |
269 | return new CacheChunkStore(new PeertubeChunkStore(chunkLength, storeOpts), { | |
270 | max: 100 | |
271 | }) | |
272 | } | |
273 | } | |
274 | ||
275 | this.torrent = this.webtorrent.add(magnetOrTorrentUrl, torrentOptions, torrent => { | |
276 | console.log('Added ' + magnetOrTorrentUrl + '.') | |
277 | ||
278 | if (oldTorrent) { | |
279 | // Pause the old torrent | |
280 | this.stopTorrent(oldTorrent) | |
281 | ||
282 | // We use a fake renderer so we download correct pieces of the next file | |
283 | if (options.delay) this.renderFileInFakeElement(torrent.files[0], options.delay) | |
284 | } | |
285 | ||
286 | // Render the video in a few seconds? (on resolution change for example, we wait some seconds of the new video resolution) | |
287 | this.addTorrentDelay = setTimeout(() => { | |
288 | // We don't need the fake renderer anymore | |
289 | this.destroyFakeRenderer() | |
290 | ||
291 | const paused = this.player.paused() | |
292 | ||
293 | this.flushVideoFile(previousVideoFile) | |
294 | ||
295 | // Update progress bar (just for the UI), do not wait rendering | |
296 | if (options.seek) this.player.currentTime(options.seek) | |
297 | ||
298 | const renderVideoOptions = { autoplay: false, controls: true } | |
299 | renderVideo(torrent.files[0], this.playerElement, renderVideoOptions, (err, renderer) => { | |
300 | this.renderer = renderer | |
301 | ||
302 | if (err) return this.fallbackToHttp(options, done) | |
303 | ||
304 | return this.tryToPlay(err => { | |
305 | if (err) return done(err) | |
306 | ||
307 | if (options.seek) this.seek(options.seek) | |
308 | if (options.forcePlay === false && paused === true) this.player.pause() | |
309 | ||
310 | return done() | |
311 | }) | |
312 | }) | |
313 | }, options.delay || 0) | |
314 | }) | |
315 | ||
316 | this.torrent.on('error', (err: any) => console.error(err)) | |
317 | ||
318 | this.torrent.on('warning', (err: any) => { | |
319 | // We don't support HTTP tracker but we don't care -> we use the web socket tracker | |
320 | if (err.message.indexOf('Unsupported tracker protocol') !== -1) return | |
321 | ||
322 | // Users don't care about issues with WebRTC, but developers do so log it in the console | |
323 | if (err.message.indexOf('Ice connection failed') !== -1) { | |
324 | console.log(err) | |
325 | return | |
326 | } | |
327 | ||
328 | // Magnet hash is not up to date with the torrent file, add directly the torrent file | |
329 | if (err.message.indexOf('incorrect info hash') !== -1) { | |
330 | console.error('Incorrect info hash detected, falling back to torrent file.') | |
331 | const newOptions = { forcePlay: true, seek: options.seek } | |
332 | return this.addTorrent(this.torrent['xs'], previousVideoFile, newOptions, done) | |
333 | } | |
334 | ||
335 | // Remote instance is down | |
336 | if (err.message.indexOf('from xs param') !== -1) { | |
337 | this.handleError(err) | |
338 | } | |
339 | ||
340 | console.warn(err) | |
341 | }) | |
342 | } | |
343 | ||
344 | private tryToPlay (done?: (err?: Error) => void) { | |
345 | if (!done) done = function () { /* empty */ } | |
346 | ||
347 | const playPromise = this.player.play() | |
348 | if (playPromise !== undefined) { | |
349 | return playPromise.then(() => done()) | |
350 | .catch((err: Error) => { | |
351 | if (err.message.includes('The play() request was interrupted by a call to pause()')) { | |
352 | return | |
353 | } | |
354 | ||
355 | console.error(err) | |
356 | this.player.pause() | |
357 | this.player.posterImage.show() | |
358 | this.player.removeClass('vjs-has-autoplay') | |
359 | this.player.removeClass('vjs-has-big-play-button-clicked') | |
360 | this.player.removeClass('vjs-playing-audio-only-content') | |
361 | ||
362 | return done() | |
363 | }) | |
364 | } | |
365 | ||
366 | return done() | |
367 | } | |
368 | ||
369 | private seek (time: number) { | |
370 | this.player.currentTime(time) | |
371 | this.player.handleTechSeeked_() | |
372 | } | |
373 | ||
374 | private getAppropriateFile (averageDownloadSpeed?: number): VideoFile { | |
375 | if (this.videoFiles === undefined) return undefined | |
376 | ||
377 | const files = this.videoFiles.filter(f => f.resolution.id !== 0) | |
378 | ||
379 | if (files.length === 0) return undefined | |
380 | if (files.length === 1) return files[0] | |
381 | ||
382 | // Don't change the torrent if the player ended | |
383 | if (this.torrent && this.torrent.progress === 1 && this.player.ended()) return this.currentVideoFile | |
384 | ||
385 | if (!averageDownloadSpeed) averageDownloadSpeed = this.getAndSaveActualDownloadSpeed() | |
386 | ||
387 | // Limit resolution according to player height | |
388 | const playerHeight = this.playerElement.offsetHeight | |
389 | ||
390 | // We take the first resolution just above the player height | |
391 | // Example: player height is 530px, we want the 720p file instead of 480p | |
392 | let maxResolution = files[0].resolution.id | |
393 | for (let i = files.length - 1; i >= 0; i--) { | |
394 | const resolutionId = files[i].resolution.id | |
395 | if (resolutionId !== 0 && resolutionId >= playerHeight) { | |
396 | maxResolution = resolutionId | |
397 | break | |
398 | } | |
399 | } | |
400 | ||
401 | // Filter videos we can play according to our screen resolution and bandwidth | |
402 | const filteredFiles = files.filter(f => f.resolution.id <= maxResolution) | |
403 | .filter(f => { | |
404 | const fileBitrate = (f.size / this.videoDuration) | |
405 | let threshold = fileBitrate | |
406 | ||
407 | // If this is for a higher resolution or an initial load: add a margin | |
408 | if (!this.currentVideoFile || f.resolution.id > this.currentVideoFile.resolution.id) { | |
409 | threshold += ((fileBitrate * this.CONSTANTS.AUTO_QUALITY_THRESHOLD_PERCENT) / 100) | |
410 | } | |
411 | ||
412 | return averageDownloadSpeed > threshold | |
413 | }) | |
414 | ||
415 | // If the download speed is too bad, return the lowest resolution we have | |
416 | if (filteredFiles.length === 0) return videoFileMinByResolution(files) | |
417 | ||
418 | return videoFileMaxByResolution(filteredFiles) | |
419 | } | |
420 | ||
421 | private getAndSaveActualDownloadSpeed () { | |
422 | const start = Math.max(this.downloadSpeeds.length - this.CONSTANTS.BANDWIDTH_AVERAGE_NUMBER_OF_VALUES, 0) | |
423 | const lastDownloadSpeeds = this.downloadSpeeds.slice(start, this.downloadSpeeds.length) | |
424 | if (lastDownloadSpeeds.length === 0) return -1 | |
425 | ||
426 | const sum = lastDownloadSpeeds.reduce((a, b) => a + b) | |
427 | const averageBandwidth = Math.round(sum / lastDownloadSpeeds.length) | |
428 | ||
429 | // Save the average bandwidth for future use | |
430 | saveAverageBandwidth(averageBandwidth) | |
431 | ||
432 | return averageBandwidth | |
433 | } | |
434 | ||
435 | private initializePlayer () { | |
436 | this.buildQualities() | |
437 | ||
438 | if (this.autoplay) { | |
439 | this.player.posterImage.hide() | |
440 | ||
441 | return this.updateVideoFile(undefined, { forcePlay: true, seek: this.startTime }) | |
442 | } | |
443 | ||
444 | // Proxy first play | |
445 | const oldPlay = this.player.play.bind(this.player); | |
446 | (this.player as any).play = () => { | |
447 | this.player.addClass('vjs-has-big-play-button-clicked') | |
448 | this.player.play = oldPlay | |
449 | ||
450 | this.updateVideoFile(undefined, { forcePlay: true, seek: this.startTime }) | |
451 | } | |
452 | } | |
453 | ||
454 | private runAutoQualityScheduler () { | |
455 | this.autoQualityInterval = setInterval(() => { | |
456 | ||
457 | // Not initialized or in HTTP fallback | |
458 | if (this.torrent === undefined || this.torrent === null) return | |
459 | if (this.autoResolution === false) return | |
460 | if (this.isAutoResolutionObservation === true) return | |
461 | ||
462 | const file = this.getAppropriateFile() | |
463 | let changeResolution = false | |
464 | let changeResolutionDelay = 0 | |
465 | ||
466 | // Lower resolution | |
467 | if (this.isPlayerWaiting() && file.resolution.id < this.currentVideoFile.resolution.id) { | |
468 | console.log('Downgrading automatically the resolution to: %s', file.resolution.label) | |
469 | changeResolution = true | |
470 | } else if (file.resolution.id > this.currentVideoFile.resolution.id) { // Higher resolution | |
471 | console.log('Upgrading automatically the resolution to: %s', file.resolution.label) | |
472 | changeResolution = true | |
473 | changeResolutionDelay = this.CONSTANTS.AUTO_QUALITY_HIGHER_RESOLUTION_DELAY | |
474 | } | |
475 | ||
476 | if (changeResolution === true) { | |
477 | this.updateEngineResolution(file.resolution.id, changeResolutionDelay) | |
478 | ||
479 | // Wait some seconds in observation of our new resolution | |
480 | this.isAutoResolutionObservation = true | |
481 | ||
482 | this.qualityObservationTimer = setTimeout(() => { | |
483 | this.isAutoResolutionObservation = false | |
484 | }, this.CONSTANTS.AUTO_QUALITY_OBSERVATION_TIME) | |
485 | } | |
486 | }, this.CONSTANTS.AUTO_QUALITY_SCHEDULER) | |
487 | } | |
488 | ||
489 | private isPlayerWaiting () { | |
490 | return this.player?.hasClass('vjs-waiting') | |
491 | } | |
492 | ||
493 | private runTorrentInfoScheduler () { | |
494 | this.torrentInfoInterval = setInterval(() => { | |
495 | // Not initialized yet | |
496 | if (this.torrent === undefined) return | |
497 | ||
498 | // Http fallback | |
499 | if (this.torrent === null) return this.player.trigger('p2pInfo', false) | |
500 | ||
501 | // this.webtorrent.downloadSpeed because we need to take into account the potential old torrent too | |
502 | if (this.webtorrent.downloadSpeed !== 0) this.downloadSpeeds.push(this.webtorrent.downloadSpeed) | |
503 | ||
504 | return this.player.trigger('p2pInfo', { | |
505 | source: 'webtorrent', | |
506 | http: { | |
507 | downloadSpeed: 0, | |
508 | uploadSpeed: 0, | |
509 | downloaded: 0, | |
510 | uploaded: 0 | |
511 | }, | |
512 | p2p: { | |
513 | downloadSpeed: this.torrent.downloadSpeed, | |
514 | numPeers: this.torrent.numPeers, | |
515 | uploadSpeed: this.torrent.uploadSpeed, | |
516 | downloaded: this.torrent.downloaded, | |
517 | uploaded: this.torrent.uploaded | |
518 | }, | |
519 | bandwidthEstimate: this.webtorrent.downloadSpeed | |
520 | } as PlayerNetworkInfo) | |
521 | }, this.CONSTANTS.INFO_SCHEDULER) | |
522 | } | |
523 | ||
524 | private fallbackToHttp (options: PlayOptions, done?: (err?: Error) => void) { | |
525 | const paused = this.player.paused() | |
526 | ||
527 | this.disableAutoResolution() | |
528 | ||
529 | this.flushVideoFile(this.currentVideoFile, true) | |
530 | this.torrent = null | |
531 | ||
532 | // Enable error display now this is our last fallback | |
533 | this.player.one('error', () => this.enableErrorDisplay()) | |
534 | ||
535 | const httpUrl = this.currentVideoFile.fileUrl | |
536 | this.player.src = this.savePlayerSrcFunction | |
537 | this.player.src(httpUrl) | |
538 | ||
539 | this.selectAppropriateResolution(true) | |
540 | ||
541 | // We changed the source, so reinit captions | |
542 | this.player.trigger('sourcechange') | |
543 | ||
544 | return this.tryToPlay(err => { | |
545 | if (err && done) return done(err) | |
546 | ||
547 | if (options.seek) this.seek(options.seek) | |
548 | if (options.forcePlay === false && paused === true) this.player.pause() | |
549 | ||
550 | if (done) return done() | |
551 | }) | |
552 | } | |
553 | ||
554 | private handleError (err: Error | string) { | |
555 | return this.player.trigger('customError', { err }) | |
556 | } | |
557 | ||
558 | private enableErrorDisplay () { | |
559 | this.player.addClass('vjs-error-display-enabled') | |
560 | } | |
561 | ||
562 | private disableErrorDisplay () { | |
563 | this.player.removeClass('vjs-error-display-enabled') | |
564 | } | |
565 | ||
566 | private pickAverageVideoFile () { | |
567 | if (this.videoFiles.length === 1) return this.videoFiles[0] | |
568 | ||
569 | const files = this.videoFiles.filter(f => f.resolution.id !== 0) | |
570 | return files[Math.floor(files.length / 2)] | |
571 | } | |
572 | ||
573 | private stopTorrent (torrent: WebTorrent.Torrent) { | |
574 | torrent.pause() | |
575 | // Pause does not remove actual peers (in particular the webseed peer) | |
576 | torrent.removePeer(torrent['ws']) | |
577 | } | |
578 | ||
579 | private renderFileInFakeElement (file: WebTorrent.TorrentFile, delay: number) { | |
580 | this.destroyingFakeRenderer = false | |
581 | ||
582 | const fakeVideoElem = document.createElement('video') | |
583 | renderVideo(file, fakeVideoElem, { autoplay: false, controls: false }, (err, renderer) => { | |
584 | this.fakeRenderer = renderer | |
585 | ||
586 | // The renderer returns an error when we destroy it, so skip them | |
587 | if (this.destroyingFakeRenderer === false && err) { | |
588 | console.error('Cannot render new torrent in fake video element.', err) | |
589 | } | |
590 | ||
591 | // Load the future file at the correct time (in delay MS - 2 seconds) | |
592 | fakeVideoElem.currentTime = this.player.currentTime() + (delay - 2000) | |
593 | }) | |
594 | } | |
595 | ||
596 | private destroyFakeRenderer () { | |
597 | if (this.fakeRenderer) { | |
598 | this.destroyingFakeRenderer = true | |
599 | ||
600 | if (this.fakeRenderer.destroy) { | |
601 | try { | |
602 | this.fakeRenderer.destroy() | |
603 | } catch (err) { | |
604 | console.log('Cannot destroy correctly fake renderer.', err) | |
605 | } | |
606 | } | |
607 | this.fakeRenderer = undefined | |
608 | } | |
609 | } | |
610 | ||
611 | private buildQualities () { | |
612 | const resolutions: PeerTubeResolution[] = this.videoFiles.map(file => ({ | |
613 | id: file.resolution.id, | |
614 | label: this.buildQualityLabel(file), | |
615 | height: file.resolution.id, | |
616 | selected: false, | |
617 | selectCallback: () => this.changeQuality(file.resolution.id) | |
618 | })) | |
619 | ||
620 | resolutions.push({ | |
621 | id: -1, | |
622 | label: this.player.localize('Auto'), | |
623 | selected: true, | |
624 | selectCallback: () => this.changeQuality(-1) | |
625 | }) | |
626 | ||
627 | this.player.peertubeResolutions().add(resolutions) | |
628 | } | |
629 | ||
630 | private buildQualityLabel (file: VideoFile) { | |
631 | let label = file.resolution.label | |
632 | ||
633 | if (file.fps && file.fps >= 50) { | |
634 | label += file.fps | |
635 | } | |
636 | ||
637 | return label | |
638 | } | |
639 | ||
640 | private selectAppropriateResolution (byEngine: boolean) { | |
641 | const resolution = this.autoResolution | |
642 | ? -1 | |
643 | : this.getCurrentResolutionId() | |
644 | ||
645 | const autoResolutionChosen = this.autoResolution | |
646 | ? this.getCurrentResolutionId() | |
647 | : undefined | |
648 | ||
649 | this.player.peertubeResolutions().select({ id: resolution, autoResolutionChosenId: autoResolutionChosen, byEngine }) | |
650 | } | |
651 | } | |
652 | ||
653 | videojs.registerPlugin('webtorrent', WebTorrentPlugin) | |
654 | export { WebTorrentPlugin } |