Do not stop tracks that are userProvided during mute (#303)

Since we cannot reacquire the tracks, we shouldn't be releasing them either

.changeset/blue-forks-exist.md

@@ -0,0 +1,5 @@
+---
+'livekit-client': patch
+---
+
+Do not stop tracks that are userProvided during mute

src/index.ts

@@ -1,4 +1,4 @@
-import { setLogLevel, setLogExtension, LogLevel } from './logger';
+import { LogLevel, setLogExtension, setLogLevel } from './logger';
 import { DataPacket_Kind, VideoQuality } from './proto/livekit_models';
 import LocalParticipant from './room/participant/LocalParticipant';
 import Participant, { ConnectionQuality } from './room/participant/Participant';
@@ -14,6 +14,7 @@ import RemoteTrack from './room/track/RemoteTrack';
 import RemoteTrackPublication from './room/track/RemoteTrackPublication';
 import RemoteVideoTrack, { ElementInfo } from './room/track/RemoteVideoTrack';
 import { TrackPublication } from './room/track/TrackPublication';
+import { getEmptyAudioStreamTrack, getEmptyVideoStreamTrack } from './room/utils';
 
 export * from './options';
 export * from './room/errors';
@@ -26,6 +27,8 @@ export * from './version';
 export {
   setLogLevel,
   setLogExtension,
+  getEmptyAudioStreamTrack,
+  getEmptyVideoStreamTrack,
   LogLevel,
   Room,
   ConnectionState,

src/room/track/LocalAudioTrack.ts

@@ -37,7 +37,7 @@ export default class LocalAudioTrack extends LocalTrack {
   async mute(): Promise<LocalAudioTrack> {
     await this.muteQueue.run(async () => {
       // disabled special handling as it will cause BT headsets to switch communication modes
-      if (this.source === Track.Source.Microphone && this.stopOnMute) {
+      if (this.source === Track.Source.Microphone && this.stopOnMute && !this.isUserProvided) {
         log.debug('stopping mic track');
         // also stop the track, so that microphone indicator is turned off
         this._mediaStreamTrack.stop();

src/room/track/LocalTrack.ts

@@ -3,8 +3,8 @@ import log from '../../logger';
 import DeviceManager from '../DeviceManager';
 import { TrackInvalidError } from '../errors';
 import { TrackEvent } from '../events';
-import { VideoCodec } from './options';
 import { getEmptyAudioStreamTrack, getEmptyVideoStreamTrack, isMobile } from '../utils';
+import { VideoCodec } from './options';
 import { attachToElement, detachTrack, Track } from './Track';
 
 export default class LocalTrack extends Track {
@@ -105,7 +105,9 @@ export default class LocalTrack extends Track {
     // on Safari, the old audio track must be stopped before attempting to acquire
     // the new track, otherwise the new track will stop with
     // 'A MediaStreamTrack ended due to a capture failure`
-    this._mediaStreamTrack.stop();
+    if (!this.providedByUser) {
+      this._mediaStreamTrack.stop();
+    }
 
     track.addEventListener('ended', this.handleEnded);
     log.debug('replace MediaStreamTrack');

src/room/track/LocalVideoTrack.ts

@@ -87,7 +87,7 @@ export default class LocalVideoTrack extends LocalTrack {
 
   async mute(): Promise<LocalVideoTrack> {
     await this.muteQueue.run(async () => {
-      if (this.source === Track.Source.Camera) {
+      if (this.source === Track.Source.Camera && !this.isUserProvided) {
         log.debug('stopping camera track');
         // also stop the track, so that camera indicator is turned off
         this._mediaStreamTrack.stop();