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5efab546 C |
1 | import './embed.scss' |
2 | ||
3 | import * as Channel from 'jschannel' | |
4 | import { PeerTubeResolution } from '../player/definitions' | |
5 | import { PeerTubeEmbed } from './embed' | |
6 | ||
7 | /** | |
8 | * Embed API exposes control of the embed player to the outside world via | |
9 | * JSChannels and window.postMessage | |
10 | */ | |
11 | export class PeerTubeEmbedApi { | |
12 | private channel: Channel.MessagingChannel | |
13 | private isReady = false | |
14 | private resolutions: PeerTubeResolution[] = null | |
15 | ||
16 | constructor (private embed: PeerTubeEmbed) { | |
17 | } | |
18 | ||
19 | initialize () { | |
20 | this.constructChannel() | |
21 | this.setupStateTracking() | |
22 | ||
23 | // We're ready! | |
24 | ||
25 | this.notifyReady() | |
26 | } | |
27 | ||
28 | private get element () { | |
29 | return this.embed.videoElement | |
30 | } | |
31 | ||
32 | private constructChannel () { | |
33 | const channel = Channel.build({ window: window.parent, origin: '*', scope: this.embed.scope }) | |
34 | ||
35 | channel.bind('play', (txn, params) => this.embed.player.play()) | |
36 | channel.bind('pause', (txn, params) => this.embed.player.pause()) | |
37 | channel.bind('seek', (txn, time) => this.embed.player.currentTime(time)) | |
38 | channel.bind('setVolume', (txn, value) => this.embed.player.volume(value)) | |
39 | channel.bind('getVolume', (txn, value) => this.embed.player.volume()) | |
40 | channel.bind('isReady', (txn, params) => this.isReady) | |
41 | channel.bind('setResolution', (txn, resolutionId) => this.setResolution(resolutionId)) | |
42 | channel.bind('getResolutions', (txn, params) => this.resolutions) | |
43 | channel.bind('setPlaybackRate', (txn, playbackRate) => this.embed.player.playbackRate(playbackRate)) | |
44 | channel.bind('getPlaybackRate', (txn, params) => this.embed.player.playbackRate()) | |
45 | channel.bind('getPlaybackRates', (txn, params) => this.embed.playerOptions.playbackRates) | |
46 | ||
47 | this.channel = channel | |
48 | } | |
49 | ||
50 | private setResolution (resolutionId: number) { | |
51 | if (resolutionId === -1 && this.embed.player.webtorrent().isAutoResolutionForbidden()) return | |
52 | ||
53 | // Auto resolution | |
54 | if (resolutionId === -1) { | |
55 | this.embed.player.webtorrent().enableAutoResolution() | |
56 | return | |
57 | } | |
58 | ||
59 | this.embed.player.webtorrent().disableAutoResolution() | |
60 | this.embed.player.webtorrent().updateResolution(resolutionId) | |
61 | } | |
62 | ||
63 | /** | |
64 | * Let the host know that we're ready to go! | |
65 | */ | |
66 | private notifyReady () { | |
67 | this.isReady = true | |
68 | this.channel.notify({ method: 'ready', params: true }) | |
69 | } | |
70 | ||
71 | private setupStateTracking () { | |
72 | let currentState: 'playing' | 'paused' | 'unstarted' = 'unstarted' | |
73 | ||
74 | setInterval(() => { | |
75 | const position = this.element.currentTime | |
76 | const volume = this.element.volume | |
77 | ||
78 | this.channel.notify({ | |
79 | method: 'playbackStatusUpdate', | |
80 | params: { | |
81 | position, | |
82 | volume, | |
83 | playbackState: currentState | |
84 | } | |
85 | }) | |
86 | }, 500) | |
87 | ||
88 | this.element.addEventListener('play', ev => { | |
89 | currentState = 'playing' | |
90 | this.channel.notify({ method: 'playbackStatusChange', params: 'playing' }) | |
91 | }) | |
92 | ||
93 | this.element.addEventListener('pause', ev => { | |
94 | currentState = 'paused' | |
95 | this.channel.notify({ method: 'playbackStatusChange', params: 'paused' }) | |
96 | }) | |
97 | ||
98 | // PeerTube specific capabilities | |
99 | ||
100 | if (this.embed.player.webtorrent) { | |
101 | this.embed.player.webtorrent().on('autoResolutionUpdate', () => this.loadWebTorrentResolutions()) | |
102 | this.embed.player.webtorrent().on('videoFileUpdate', () => this.loadWebTorrentResolutions()) | |
103 | } | |
104 | } | |
105 | ||
106 | private loadWebTorrentResolutions () { | |
107 | const resolutions = [] | |
108 | const currentResolutionId = this.embed.player.webtorrent().getCurrentResolutionId() | |
109 | ||
110 | for (const videoFile of this.embed.player.webtorrent().videoFiles) { | |
111 | let label = videoFile.resolution.label | |
112 | if (videoFile.fps && videoFile.fps >= 50) { | |
113 | label += videoFile.fps | |
114 | } | |
115 | ||
116 | resolutions.push({ | |
117 | id: videoFile.resolution.id, | |
118 | label, | |
119 | src: videoFile.magnetUri, | |
120 | active: videoFile.resolution.id === currentResolutionId | |
121 | }) | |
122 | } | |
123 | ||
124 | this.resolutions = resolutions | |
125 | this.channel.notify({ | |
126 | method: 'resolutionUpdate', | |
127 | params: this.resolutions | |
128 | }) | |
129 | } | |
130 | } |