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move webrtc congestion control to connection.

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This commit is contained in:
Miroslav Šedivý 2021-06-19 18:51:14 +02:00
parent daff2552a3
commit 071f97fb1b
2 changed files with 45 additions and 41 deletions
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44
src/component/internal/connection.ts
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@ -1,5 +1,6 @@
import Vue from 'vue'
import EventEmitter from 'eventemitter3'
import * as EVENT from '../types/events'
import { NekoWebSocket } from './websocket'
import { NekoWebRTC, WebRTCStats } from './webrtc'
@ -69,6 +70,41 @@ export class NekoConnection extends EventEmitter<NekoConnectionEvents> {
Vue.set(this._state, 'status', 'disconnected')
}
})
let webrtcCongestion: number = 0
this.webrtc.on('stats', (stats: WebRTCStats) => {
Vue.set(this._state.webrtc, 'stats', stats)
// if automatic quality adjusting is turned off
if (!this._state.webrtc.auto) return
// if there are no or just one quality, no switching can be done
if (this._state.webrtc.videos.length <= 1) return
// current quality is not known
if (this._state.webrtc.video == null) return
// check if video is not playing
if (stats.fps) {
webrtcCongestion = 0
return
}
// try to downgrade quality if it happend many times
if (++webrtcCongestion >= 3) {
const index = this._state.webrtc.videos.indexOf(this._state.webrtc.video)
// edge case: current quality is not in qualities list
if (index === -1) return
// current quality is the lowest one
if (index + 1 == this._state.webrtc.videos.length) return
// downgrade video quality
this.setVideo(this._state.webrtc.videos[index + 1])
webrtcCongestion = 0
}
})
}
public setUrl(url: string) {
@ -79,6 +115,14 @@ export class NekoConnection extends EventEmitter<NekoConnectionEvents> {
this._token = token
}
public setVideo(video: string) {
if (!this._state.webrtc.videos.includes(video)) {
throw new Error('video id not found')
}
this.websocket.send(EVENT.SIGNAL_VIDEO, { video: video })
}
public async connect(): Promise<void> {
let url = this._url
if (this._token) {