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fix: no hark after change audio device

master
Stefan Otto 2018-11-14 12:03:01 +01:00
parent 6d9ebacee3
commit ce5ef1e18e
1 changed files with 30 additions and 0 deletions
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30
app/lib/RoomClient.js
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@ -552,8 +552,38 @@ export default class RoomClient
const track = stream.getAudioTracks()[0];
const oldTrack = this._micProducer.track;
const newTrack = await this._micProducer.replaceTrack(track);
const harkStream = new MediaStream;
harkStream.addTrack(newTrack);
if (!harkStream.getAudioTracks()[0])
throw new Error('changeAudioDevice(): given stream has no audio track');
if (this._micProducer.hark != null) this._micProducer.hark.stop();
this._micProducer.hark = hark(harkStream, { play: false });
// eslint-disable-next-line no-unused-vars
this._micProducer.hark.on('volume_change', (dBs, threshold) =>
{
// The exact formula to convert from dBs (-100..0) to linear (0..1) is:
// Math.pow(10, dBs / 20)
// However it does not produce a visually useful output, so let exagerate
// it a bit. Also, let convert it from 0..1 to 0..10 and avoid value 1 to
// minimize component renderings.
let volume = Math.round(Math.pow(10, dBs / 85) * 10);
if (volume === 1)
volume = 0;
if (volume !== this._micProducer.volume)
{
this._micProducer.volume = volume;
this._dispatch(stateActions.setProducerVolume(this._micProducer.id, volume));
}
});
track.stop();
this._dispatch(