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[github/Chocobozzz/PeerTube.git] / client / src / standalone / videos / embed-api.ts
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1import './embed.scss'
2
3import * as Channel from 'jschannel'
4import { PeerTubeResolution, PeerTubeTextTrack } from '../player/definitions'
5import { 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 */
11export class PeerTubeEmbedApi {
12 private channel: Channel.MessagingChannel
13 private isReady = false
14 private resolutions: PeerTubeResolution[] = []
15
16 constructor (private readonly embed: PeerTubeEmbed) {
17
18 }
19
20 initialize () {
21 this.constructChannel()
22 this.setupStateTracking()
23
24 // We're ready!
25
26 this.notifyReady()
27 }
28
29 private get element () {
30 return this.embed.getPlayerElement()
31 }
32
33 private constructChannel () {
34 const channel = Channel.build({ window: window.parent, origin: '*', scope: this.embed.getScope() })
35
36 channel.bind('play', (txn, params) => this.embed.player.play())
37 channel.bind('pause', (txn, params) => this.embed.player.pause())
38 channel.bind('seek', (txn, time) => this.embed.player.currentTime(time))
39
40 channel.bind('setVolume', (txn, value) => this.embed.player.volume(value))
41 channel.bind('getVolume', (txn, value) => this.embed.player.volume())
42
43 channel.bind('isReady', (txn, params) => this.isReady)
44
45 channel.bind('setResolution', (txn, resolutionId) => this.setResolution(resolutionId))
46 channel.bind('getResolutions', (txn, params) => this.resolutions)
47
48 channel.bind('getCaptions', (txn, params) => this.getCaptions())
49 channel.bind('setCaption', (txn, id) => this.setCaption(id))
50
51 channel.bind('setPlaybackRate', (txn, playbackRate) => this.embed.player.playbackRate(playbackRate))
52 channel.bind('getPlaybackRate', (txn, params) => this.embed.player.playbackRate())
53 channel.bind('getPlaybackRates', (txn, params) => this.embed.player.options_.playbackRates)
54
55 channel.bind('playNextVideo', (txn, params) => this.embed.playNextPlaylistVideo())
56 channel.bind('playPreviousVideo', (txn, params) => this.embed.playPreviousPlaylistVideo())
57 channel.bind('getCurrentPosition', (txn, params) => this.embed.getCurrentPlaylistPosition())
58 this.channel = channel
59 }
60
61 private setResolution (resolutionId: number) {
62 console.log('set resolution %d', resolutionId)
63
64 if (this.isWebtorrent()) {
65 if (resolutionId === -1 && this.embed.player.webtorrent().isAutoResolutionPossible() === false) return
66
67 this.embed.player.webtorrent().changeQuality(resolutionId)
68
69 return
70 }
71
72 this.embed.player.p2pMediaLoader().getHLSJS().currentLevel = resolutionId
73 }
74
75 private getCaptions (): PeerTubeTextTrack[] {
76 return this.embed.player.textTracks().tracks_.map(t => ({
77 id: t.id,
78 src: t.src,
79 label: t.label,
80 mode: t.mode
81 }))
82 }
83
84 private setCaption (id: string) {
85 const tracks = this.embed.player.textTracks().tracks_
86
87 for (const track of tracks) {
88 if (track.id === id) track.mode = 'showing'
89 else track.mode = 'disabled'
90 }
91 }
92
93 /**
94 * Let the host know that we're ready to go!
95 */
96 private notifyReady () {
97 this.isReady = true
98 this.channel.notify({ method: 'ready', params: true })
99 }
100
101 private setupStateTracking () {
102 let currentState: 'playing' | 'paused' | 'unstarted' | 'ended' = 'unstarted'
103
104 setInterval(() => {
105 const position = this.element.currentTime
106 const volume = this.element.volume
107
108 this.channel.notify({
109 method: 'playbackStatusUpdate',
110 params: {
111 position,
112 volume,
113 duration: this.embed.player.duration(),
114 playbackState: currentState
115 }
116 })
117 }, 500)
118
119 this.element.addEventListener('play', ev => {
120 currentState = 'playing'
121 this.channel.notify({ method: 'playbackStatusChange', params: 'playing' })
122 })
123
124 this.element.addEventListener('pause', ev => {
125 currentState = 'paused'
126 this.channel.notify({ method: 'playbackStatusChange', params: 'paused' })
127 })
128
129 this.element.addEventListener('ended', ev => {
130 currentState = 'ended'
131 this.channel.notify({ method: 'playbackStatusChange', params: 'ended' })
132 })
133
134 // PeerTube specific capabilities
135 this.embed.player.peertubeResolutions().on('resolutionsAdded', () => this.loadResolutions())
136 this.embed.player.peertubeResolutions().on('resolutionChanged', () => this.loadResolutions())
137
138 this.loadResolutions()
139
140 this.embed.player.on('volumechange', () => {
141 this.channel.notify({
142 method: 'volumeChange',
143 params: this.embed.player.volume()
144 })
145 })
146 }
147
148 private loadResolutions () {
149 this.resolutions = this.embed.player.peertubeResolutions().getResolutions()
150 .map(r => ({
151 id: r.id,
152 label: r.label,
153 active: r.selected,
154 width: r.width,
155 height: r.height
156 }))
157
158 this.channel.notify({
159 method: 'resolutionUpdate',
160 params: this.resolutions
161 })
162 }
163
164 private isWebtorrent () {
165 return !!this.embed.player.webtorrent
166 }
167}