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