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1 | import * as videojs from 'video.js' | |
2 | import * as WebTorrent from 'webtorrent' | |
3 | import { VideoFile } from '../../../../shared/models/videos/video.model' | |
4 | import { renderVideo } from './video-renderer' | |
5 | import './settings-menu-button' | |
6 | import { PeertubePluginOptions, VideoJSComponentInterface, videojsUntyped } from './peertube-videojs-typings' | |
7 | import { | |
8 | getAverageBandwidth, | |
9 | getStoredMute, | |
10 | getStoredVolume, | |
11 | isMobile, | |
12 | saveAverageBandwidth, | |
13 | saveMuteInStore, | |
14 | saveVolumeInStore | |
15 | } from './utils' | |
16 | import minBy from 'lodash-es/minBy' | |
17 | import maxBy from 'lodash-es/maxBy' | |
18 | import * as CacheChunkStore from 'cache-chunk-store' | |
19 | import { PeertubeChunkStore } from './peertube-chunk-store' | |
20 | ||
21 | const webtorrent = new WebTorrent({ | |
22 | tracker: { | |
23 | rtcConfig: { | |
24 | iceServers: [ | |
25 | { | |
26 | urls: 'stun:stun.stunprotocol.org' | |
27 | }, | |
28 | { | |
29 | urls: 'stun:stun.framasoft.org' | |
30 | } | |
31 | ] | |
32 | } | |
33 | }, | |
34 | dht: false | |
35 | }) | |
36 | ||
37 | const Plugin: VideoJSComponentInterface = videojsUntyped.getPlugin('plugin') | |
38 | class PeerTubePlugin extends Plugin { | |
39 | private readonly playerElement: HTMLVideoElement | |
40 | ||
41 | private readonly autoplay: boolean = false | |
42 | private readonly startTime: number = 0 | |
43 | private readonly savePlayerSrcFunction: Function | |
44 | private readonly videoFiles: VideoFile[] | |
45 | private readonly videoViewUrl: string | |
46 | private readonly videoDuration: number | |
47 | private readonly CONSTANTS = { | |
48 | INFO_SCHEDULER: 1000, // Don't change this | |
49 | AUTO_QUALITY_SCHEDULER: 3000, // Check quality every 3 seconds | |
50 | AUTO_QUALITY_THRESHOLD_PERCENT: 30, // Bandwidth should be 30% more important than a resolution bitrate to change to it | |
51 | AUTO_QUALITY_OBSERVATION_TIME: 10000, // Wait 10 seconds after having change the resolution before another check | |
52 | AUTO_QUALITY_HIGHER_RESOLUTION_DELAY: 5000, // Buffering higher resolution during 5 seconds | |
53 | BANDWIDTH_AVERAGE_NUMBER_OF_VALUES: 5 // Last 5 seconds to build average bandwidth | |
54 | } | |
55 | ||
56 | private player: any | |
57 | private currentVideoFile: VideoFile | |
58 | private torrent: WebTorrent.Torrent | |
59 | private autoResolution = true | |
60 | private isAutoResolutionObservation = false | |
61 | ||
62 | private videoViewInterval | |
63 | private torrentInfoInterval | |
64 | private autoQualityInterval | |
65 | private addTorrentDelay | |
66 | private qualityObservationTimer | |
67 | private runAutoQualitySchedulerTimer | |
68 | ||
69 | private downloadSpeeds: number[] = [] | |
70 | ||
71 | constructor (player: videojs.Player, options: PeertubePluginOptions) { | |
72 | super(player, options) | |
73 | ||
74 | // Disable auto play on iOS | |
75 | this.autoplay = options.autoplay && this.isIOS() === false | |
76 | ||
77 | this.startTime = options.startTime | |
78 | this.videoFiles = options.videoFiles | |
79 | this.videoViewUrl = options.videoViewUrl | |
80 | this.videoDuration = options.videoDuration | |
81 | ||
82 | this.savePlayerSrcFunction = this.player.src | |
83 | // Hack to "simulate" src link in video.js >= 6 | |
84 | // Without this, we can't play the video after pausing it | |
85 | // https://github.com/videojs/video.js/blob/master/src/js/player.js#L1633 | |
86 | this.player.src = () => true | |
87 | ||
88 | this.playerElement = options.playerElement | |
89 | ||
90 | if (this.autoplay === true) this.player.addClass('vjs-has-autoplay') | |
91 | ||
92 | this.player.ready(() => { | |
93 | const volume = getStoredVolume() | |
94 | if (volume !== undefined) this.player.volume(volume) | |
95 | const muted = getStoredMute() | |
96 | if (muted !== undefined) this.player.muted(muted) | |
97 | ||
98 | this.initializePlayer() | |
99 | this.runTorrentInfoScheduler() | |
100 | this.runViewAdd() | |
101 | ||
102 | this.player.one('play', () => { | |
103 | // Don't run immediately scheduler, wait some seconds the TCP connections are made | |
104 | this.runAutoQualitySchedulerTimer = setTimeout(() => { | |
105 | this.runAutoQualityScheduler() | |
106 | }, this.CONSTANTS.AUTO_QUALITY_SCHEDULER) | |
107 | }) | |
108 | }) | |
109 | ||
110 | this.player.on('volumechange', () => { | |
111 | saveVolumeInStore(this.player.volume()) | |
112 | saveMuteInStore(this.player.muted()) | |
113 | }) | |
114 | } | |
115 | ||
116 | dispose () { | |
117 | clearTimeout(this.addTorrentDelay) | |
118 | clearTimeout(this.qualityObservationTimer) | |
119 | clearTimeout(this.runAutoQualitySchedulerTimer) | |
120 | ||
121 | clearInterval(this.videoViewInterval) | |
122 | clearInterval(this.torrentInfoInterval) | |
123 | clearInterval(this.autoQualityInterval) | |
124 | ||
125 | // Don't need to destroy renderer, video player will be destroyed | |
126 | this.flushVideoFile(this.currentVideoFile, false) | |
127 | } | |
128 | ||
129 | getCurrentResolutionId () { | |
130 | return this.currentVideoFile ? this.currentVideoFile.resolution.id : -1 | |
131 | } | |
132 | ||
133 | getCurrentResolutionLabel () { | |
134 | return this.currentVideoFile ? this.currentVideoFile.resolution.label : '' | |
135 | } | |
136 | ||
137 | updateVideoFile (videoFile?: VideoFile, delay = 0, done?: () => void) { | |
138 | if (done === undefined) { | |
139 | done = () => { /* empty */ } | |
140 | } | |
141 | ||
142 | // Automatically choose the adapted video file | |
143 | if (videoFile === undefined) { | |
144 | const savedAverageBandwidth = getAverageBandwidth() | |
145 | videoFile = savedAverageBandwidth | |
146 | ? this.getAppropriateFile(savedAverageBandwidth) | |
147 | : this.videoFiles[0] | |
148 | } | |
149 | ||
150 | // Don't add the same video file once again | |
151 | if (this.currentVideoFile !== undefined && this.currentVideoFile.magnetUri === videoFile.magnetUri) { | |
152 | return | |
153 | } | |
154 | ||
155 | // Do not display error to user because we will have multiple fallback | |
156 | this.disableErrorDisplay() | |
157 | ||
158 | this.player.src = () => true | |
159 | const oldPlaybackRate = this.player.playbackRate() | |
160 | ||
161 | const previousVideoFile = this.currentVideoFile | |
162 | this.currentVideoFile = videoFile | |
163 | ||
164 | this.addTorrent(this.currentVideoFile.magnetUri, previousVideoFile, delay, () => { | |
165 | this.player.playbackRate(oldPlaybackRate) | |
166 | return done() | |
167 | }) | |
168 | ||
169 | this.trigger('videoFileUpdate') | |
170 | } | |
171 | ||
172 | addTorrent (magnetOrTorrentUrl: string, previousVideoFile: VideoFile, delay = 0, done: Function) { | |
173 | console.log('Adding ' + magnetOrTorrentUrl + '.') | |
174 | ||
175 | const oldTorrent = this.torrent | |
176 | const options = { | |
177 | store: (chunkLength, storeOpts) => new CacheChunkStore(new PeertubeChunkStore(chunkLength, storeOpts), { | |
178 | max: 100 | |
179 | }) | |
180 | } | |
181 | ||
182 | this.torrent = webtorrent.add(magnetOrTorrentUrl, options, torrent => { | |
183 | console.log('Added ' + magnetOrTorrentUrl + '.') | |
184 | ||
185 | // Pause the old torrent | |
186 | if (oldTorrent) { | |
187 | oldTorrent.pause() | |
188 | // Pause does not remove actual peers (in particular the webseed peer) | |
189 | oldTorrent.removePeer(oldTorrent['ws']) | |
190 | } | |
191 | ||
192 | // Render the video in a few seconds? (on resolution change for example, we wait some seconds of the new video resolution) | |
193 | this.addTorrentDelay = setTimeout(() => { | |
194 | this.flushVideoFile(previousVideoFile) | |
195 | ||
196 | const options = { autoplay: true, controls: true } | |
197 | renderVideo(torrent.files[0], this.playerElement, options,(err, renderer) => { | |
198 | this.renderer = renderer | |
199 | ||
200 | if (err) return this.fallbackToHttp(done) | |
201 | ||
202 | if (!this.player.paused()) return this.tryToPlay(done) | |
203 | ||
204 | return done() | |
205 | }) | |
206 | }, delay) | |
207 | }) | |
208 | ||
209 | this.torrent.on('error', err => this.handleError(err)) | |
210 | ||
211 | this.torrent.on('warning', (err: any) => { | |
212 | // We don't support HTTP tracker but we don't care -> we use the web socket tracker | |
213 | if (err.message.indexOf('Unsupported tracker protocol') !== -1) return | |
214 | ||
215 | // Users don't care about issues with WebRTC, but developers do so log it in the console | |
216 | if (err.message.indexOf('Ice connection failed') !== -1) { | |
217 | console.error(err) | |
218 | return | |
219 | } | |
220 | ||
221 | // Magnet hash is not up to date with the torrent file, add directly the torrent file | |
222 | if (err.message.indexOf('incorrect info hash') !== -1) { | |
223 | console.error('Incorrect info hash detected, falling back to torrent file.') | |
224 | return this.addTorrent(this.torrent['xs'], previousVideoFile, 0, done) | |
225 | } | |
226 | ||
227 | return this.handleError(err) | |
228 | }) | |
229 | } | |
230 | ||
231 | updateResolution (resolutionId: number, delay = 0) { | |
232 | // Remember player state | |
233 | const currentTime = this.player.currentTime() | |
234 | const isPaused = this.player.paused() | |
235 | ||
236 | // Remove poster to have black background | |
237 | this.playerElement.poster = '' | |
238 | ||
239 | // Hide bigPlayButton | |
240 | if (!isPaused) { | |
241 | this.player.bigPlayButton.hide() | |
242 | } | |
243 | ||
244 | const newVideoFile = this.videoFiles.find(f => f.resolution.id === resolutionId) | |
245 | this.updateVideoFile(newVideoFile, delay, () => this.seek(currentTime)) | |
246 | } | |
247 | ||
248 | flushVideoFile (videoFile: VideoFile, destroyRenderer = true) { | |
249 | if (videoFile !== undefined && webtorrent.get(videoFile.magnetUri)) { | |
250 | if (destroyRenderer === true && this.renderer && this.renderer.destroy) this.renderer.destroy() | |
251 | ||
252 | webtorrent.remove(videoFile.magnetUri) | |
253 | console.log('Removed ' + videoFile.magnetUri) | |
254 | } | |
255 | } | |
256 | ||
257 | isAutoResolutionOn () { | |
258 | return this.autoResolution | |
259 | } | |
260 | ||
261 | enableAutoResolution () { | |
262 | this.autoResolution = true | |
263 | this.trigger('autoResolutionUpdate') | |
264 | } | |
265 | ||
266 | disableAutoResolution () { | |
267 | this.autoResolution = false | |
268 | this.trigger('autoResolutionUpdate') | |
269 | } | |
270 | ||
271 | private tryToPlay (done?: Function) { | |
272 | if (!done) done = function () { /* empty */ } | |
273 | ||
274 | const playPromise = this.player.play() | |
275 | if (playPromise !== undefined) { | |
276 | return playPromise.then(done) | |
277 | .catch(err => { | |
278 | console.error(err) | |
279 | this.player.pause() | |
280 | this.player.posterImage.show() | |
281 | this.player.removeClass('vjs-has-autoplay') | |
282 | ||
283 | return done() | |
284 | }) | |
285 | } | |
286 | ||
287 | return done() | |
288 | } | |
289 | ||
290 | private seek (time: number) { | |
291 | this.player.currentTime(time) | |
292 | this.player.handleTechSeeked_() | |
293 | } | |
294 | ||
295 | private getAppropriateFile (averageDownloadSpeed?: number): VideoFile { | |
296 | if (this.videoFiles === undefined || this.videoFiles.length === 0) return undefined | |
297 | if (this.videoFiles.length === 1) return this.videoFiles[0] | |
298 | ||
299 | // Don't change the torrent is the play was ended | |
300 | if (this.torrent && this.torrent.progress === 1 && this.player.ended()) return this.currentVideoFile | |
301 | ||
302 | if (!averageDownloadSpeed) averageDownloadSpeed = this.getAndSaveActualDownloadSpeed() | |
303 | ||
304 | // Filter videos we can play according to our bandwidth | |
305 | const filteredFiles = this.videoFiles.filter(f => { | |
306 | const fileBitrate = (f.size / this.videoDuration) | |
307 | let threshold = fileBitrate | |
308 | ||
309 | // If this is for a higher resolution or an initial load: add a margin | |
310 | if (!this.currentVideoFile || f.resolution.id > this.currentVideoFile.resolution.id) { | |
311 | threshold += ((fileBitrate * this.CONSTANTS.AUTO_QUALITY_THRESHOLD_PERCENT) / 100) | |
312 | } | |
313 | ||
314 | return averageDownloadSpeed > threshold | |
315 | }) | |
316 | ||
317 | // If the download speed is too bad, return the lowest resolution we have | |
318 | if (filteredFiles.length === 0) return minBy(this.videoFiles, 'resolution.id') | |
319 | ||
320 | return maxBy(filteredFiles, 'resolution.id') | |
321 | } | |
322 | ||
323 | private getAndSaveActualDownloadSpeed () { | |
324 | const start = Math.max(this.downloadSpeeds.length - this.CONSTANTS.BANDWIDTH_AVERAGE_NUMBER_OF_VALUES, 0) | |
325 | const lastDownloadSpeeds = this.downloadSpeeds.slice(start, this.downloadSpeeds.length) | |
326 | if (lastDownloadSpeeds.length === 0) return -1 | |
327 | ||
328 | const sum = lastDownloadSpeeds.reduce((a, b) => a + b) | |
329 | const averageBandwidth = Math.round(sum / lastDownloadSpeeds.length) | |
330 | ||
331 | // Save the average bandwidth for future use | |
332 | saveAverageBandwidth(averageBandwidth) | |
333 | ||
334 | return averageBandwidth | |
335 | } | |
336 | ||
337 | private initializePlayer () { | |
338 | this.initSmoothProgressBar() | |
339 | ||
340 | this.alterInactivity() | |
341 | ||
342 | if (this.autoplay === true) { | |
343 | this.player.posterImage.hide() | |
344 | ||
345 | this.updateVideoFile(undefined, 0, () => { | |
346 | this.seek(this.startTime) | |
347 | this.tryToPlay() | |
348 | }) | |
349 | } else { | |
350 | // Don't try on iOS that does not support MediaSource | |
351 | if (this.isIOS()) { | |
352 | this.currentVideoFile = this.videoFiles[0] | |
353 | return this.fallbackToHttp(undefined, false) | |
354 | } | |
355 | ||
356 | // Proxy first play | |
357 | const oldPlay = this.player.play.bind(this.player) | |
358 | this.player.play = () => { | |
359 | this.player.addClass('vjs-has-big-play-button-clicked') | |
360 | this.player.play = oldPlay | |
361 | ||
362 | this.updateVideoFile(undefined, 0, () => this.seek(this.startTime)) | |
363 | } | |
364 | } | |
365 | } | |
366 | ||
367 | private runAutoQualityScheduler () { | |
368 | this.autoQualityInterval = setInterval(() => { | |
369 | ||
370 | // Not initialized or in HTTP fallback | |
371 | if (this.torrent === undefined || this.torrent === null) return | |
372 | if (this.isAutoResolutionOn() === false) return | |
373 | if (this.isAutoResolutionObservation === true) return | |
374 | ||
375 | const file = this.getAppropriateFile() | |
376 | let changeResolution = false | |
377 | let changeResolutionDelay = 0 | |
378 | ||
379 | // Lower resolution | |
380 | if (this.isPlayerWaiting() && file.resolution.id < this.currentVideoFile.resolution.id) { | |
381 | console.log('Downgrading automatically the resolution to: %s', file.resolution.label) | |
382 | changeResolution = true | |
383 | } else if (file.resolution.id > this.currentVideoFile.resolution.id) { // Higher resolution | |
384 | console.log('Upgrading automatically the resolution to: %s', file.resolution.label) | |
385 | changeResolution = true | |
386 | changeResolutionDelay = this.CONSTANTS.AUTO_QUALITY_HIGHER_RESOLUTION_DELAY | |
387 | } | |
388 | ||
389 | if (changeResolution === true) { | |
390 | this.updateResolution(file.resolution.id, changeResolutionDelay) | |
391 | ||
392 | // Wait some seconds in observation of our new resolution | |
393 | this.isAutoResolutionObservation = true | |
394 | ||
395 | this.qualityObservationTimer = setTimeout(() => { | |
396 | this.isAutoResolutionObservation = false | |
397 | }, this.CONSTANTS.AUTO_QUALITY_OBSERVATION_TIME) | |
398 | } | |
399 | }, this.CONSTANTS.AUTO_QUALITY_SCHEDULER) | |
400 | } | |
401 | ||
402 | private isPlayerWaiting () { | |
403 | return this.player && this.player.hasClass('vjs-waiting') | |
404 | } | |
405 | ||
406 | private runTorrentInfoScheduler () { | |
407 | this.torrentInfoInterval = setInterval(() => { | |
408 | // Not initialized yet | |
409 | if (this.torrent === undefined) return | |
410 | ||
411 | // Http fallback | |
412 | if (this.torrent === null) return this.trigger('torrentInfo', false) | |
413 | ||
414 | // webtorrent.downloadSpeed because we need to take into account the potential old torrent too | |
415 | if (webtorrent.downloadSpeed !== 0) this.downloadSpeeds.push(webtorrent.downloadSpeed) | |
416 | ||
417 | return this.trigger('torrentInfo', { | |
418 | downloadSpeed: this.torrent.downloadSpeed, | |
419 | numPeers: this.torrent.numPeers, | |
420 | uploadSpeed: this.torrent.uploadSpeed | |
421 | }) | |
422 | }, this.CONSTANTS.INFO_SCHEDULER) | |
423 | } | |
424 | ||
425 | private runViewAdd () { | |
426 | this.clearVideoViewInterval() | |
427 | ||
428 | // After 30 seconds (or 3/4 of the video), add a view to the video | |
429 | let minSecondsToView = 30 | |
430 | ||
431 | if (this.videoDuration < minSecondsToView) minSecondsToView = (this.videoDuration * 3) / 4 | |
432 | ||
433 | let secondsViewed = 0 | |
434 | this.videoViewInterval = setInterval(() => { | |
435 | if (this.player && !this.player.paused()) { | |
436 | secondsViewed += 1 | |
437 | ||
438 | if (secondsViewed > minSecondsToView) { | |
439 | this.clearVideoViewInterval() | |
440 | ||
441 | this.addViewToVideo().catch(err => console.error(err)) | |
442 | } | |
443 | } | |
444 | }, 1000) | |
445 | } | |
446 | ||
447 | private clearVideoViewInterval () { | |
448 | if (this.videoViewInterval !== undefined) { | |
449 | clearInterval(this.videoViewInterval) | |
450 | this.videoViewInterval = undefined | |
451 | } | |
452 | } | |
453 | ||
454 | private addViewToVideo () { | |
455 | return fetch(this.videoViewUrl, { method: 'POST' }) | |
456 | } | |
457 | ||
458 | private fallbackToHttp (done?: Function, play = true) { | |
459 | this.flushVideoFile(this.currentVideoFile, true) | |
460 | this.torrent = null | |
461 | ||
462 | // Enable error display now this is our last fallback | |
463 | this.player.one('error', () => this.enableErrorDisplay()) | |
464 | ||
465 | const httpUrl = this.currentVideoFile.fileUrl | |
466 | this.player.src = this.savePlayerSrcFunction | |
467 | this.player.src(httpUrl) | |
468 | if (play) this.tryToPlay() | |
469 | ||
470 | if (done) return done() | |
471 | } | |
472 | ||
473 | private handleError (err: Error | string) { | |
474 | return this.player.trigger('customError', { err }) | |
475 | } | |
476 | ||
477 | private enableErrorDisplay () { | |
478 | this.player.addClass('vjs-error-display-enabled') | |
479 | } | |
480 | ||
481 | private disableErrorDisplay () { | |
482 | this.player.removeClass('vjs-error-display-enabled') | |
483 | } | |
484 | ||
485 | private isIOS () { | |
486 | return !!navigator.platform && /iPad|iPhone|iPod/.test(navigator.platform) | |
487 | } | |
488 | ||
489 | private alterInactivity () { | |
490 | let saveInactivityTimeout: number | |
491 | ||
492 | const disableInactivity = () => { | |
493 | saveInactivityTimeout = this.player.options_.inactivityTimeout | |
494 | this.player.options_.inactivityTimeout = 0 | |
495 | } | |
496 | const enableInactivity = () => { | |
497 | this.player.options_.inactivityTimeout = saveInactivityTimeout | |
498 | } | |
499 | ||
500 | const settingsDialog = this.player.children_.find(c => c.name_ === 'SettingsDialog') | |
501 | ||
502 | this.player.controlBar.on('mouseenter', () => disableInactivity()) | |
503 | settingsDialog.on('mouseenter', () => disableInactivity()) | |
504 | this.player.controlBar.on('mouseleave', () => enableInactivity()) | |
505 | settingsDialog.on('mouseleave', () => enableInactivity()) | |
506 | } | |
507 | ||
508 | // Thanks: https://github.com/videojs/video.js/issues/4460#issuecomment-312861657 | |
509 | private initSmoothProgressBar () { | |
510 | const SeekBar = videojsUntyped.getComponent('SeekBar') | |
511 | SeekBar.prototype.getPercent = function getPercent () { | |
512 | // Allows for smooth scrubbing, when player can't keep up. | |
513 | // const time = (this.player_.scrubbing()) ? | |
514 | // this.player_.getCache().currentTime : | |
515 | // this.player_.currentTime() | |
516 | const time = this.player_.currentTime() | |
517 | const percent = time / this.player_.duration() | |
518 | return percent >= 1 ? 1 : percent | |
519 | } | |
520 | SeekBar.prototype.handleMouseMove = function handleMouseMove (event) { | |
521 | let newTime = this.calculateDistance(event) * this.player_.duration() | |
522 | if (newTime === this.player_.duration()) { | |
523 | newTime = newTime - 0.1 | |
524 | } | |
525 | this.player_.currentTime(newTime) | |
526 | this.update() | |
527 | } | |
528 | } | |
529 | } | |
530 | ||
531 | videojsUntyped.registerPlugin('peertube', PeerTubePlugin) | |
532 | export { PeerTubePlugin } |