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webrtc quality downgrade on reconnect.

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This commit is contained in:
Miroslav Šedivý 2021-06-23 23:37:39 +02:00
parent 15cfe4c146
commit fcae8156f5
1 changed files with 24 additions and 11 deletions
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35
src/component/internal/connection.ts
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@ -81,17 +81,11 @@ export class NekoConnection extends EventEmitter<NekoConnectionEvents> {
// 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
webrtcCongestion = 0
// downgrade video quality
this.setVideo(this._state.webrtc.videos[index + 1])
webrtcCongestion = 0
const quality = this._webrtcQualityDowngrade()
if (quality) this.setVideo(quality)
}
})
}
@ -225,13 +219,15 @@ export class NekoConnection extends EventEmitter<NekoConnectionEvents> {
return
}
const lastVideo = this._state.webrtc.video ?? undefined
let lastQuality: string | undefined
this._log.debug(`starting webrtc reconnection`)
setTimeout(async () => {
while (this.activated && this.websocket.connected) {
try {
await this._webrtcConnect(lastVideo)
const quality = this._webrtcQualityDowngrade(lastQuality)
if (quality) lastQuality = quality
await this._webrtcConnect(lastQuality)
break
} catch (e) {
this._log.debug(`webrtc reconnection failed`, e)
@ -242,4 +238,21 @@ export class NekoConnection extends EventEmitter<NekoConnectionEvents> {
this._log.debug(`webrtc reconnection finished`)
}, 0)
}
_webrtcQualityDowngrade(quality?: string): string | undefined {
// current quality is not known
if (typeof quality === 'undefined' || this._state.webrtc.video == null) return
// get index of selected or surrent quality
const index = this._state.webrtc.videos.indexOf(quality || 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
return this._state.webrtc.videos[index + 1]
}
}