Fix bluetooth iOS issue (device auto switches from Bluetooth to speaker) (#3388)

* fix ios bluetooth

Signed-off-by: Timo K <toger5@hotmail.de>

* fix lints

Signed-off-by: Timo K <toger5@hotmail.de>

---------

Signed-off-by: Timo K <toger5@hotmail.de>

src/state/CallViewModel.ts

@@ -1276,7 +1276,7 @@ export class CallViewModel extends ViewModel {
     (available, selected) => {
       const selectionType = selected && available.get(selected.id)?.type;
 
-      // If we are in any output mode other than spaeker switch to speaker.
+      // If we are in any output mode other than speaker switch to speaker.
       const newSelectionType =
         selectionType === "speaker" ? "earpiece" : "speaker";
       const newSelection = [...available].find(

src/state/MediaDevices.ts

@@ -264,6 +264,15 @@ class AudioOutput
 class ControlledAudioOutput
   implements MediaDevice<AudioOutputDeviceLabel, SelectedAudioOutputDevice>
 {
+  // We need to subscribe to the raw devices so that the OS does update the input
+  // back to what it was before. otherwise we will switch back to the default
+  // whenever we allocate a new stream.
+  public readonly availableRaw$ = availableRawDevices$(
+    "audiooutput",
+    this.usingNames$,
+    this.scope,
+  );
+
   public readonly available$ = combineLatest(
     [controlledAvailableOutputDevices$.pipe(startWith([])), iosDeviceMenu$],
     (availableRaw, iosDeviceMenu) => {
@@ -311,14 +320,17 @@ class ControlledAudioOutput
     },
   ).pipe(this.scope.state());
 
-  public constructor(private readonly scope: ObservableScope) {
+  public constructor(
+    private readonly usingNames$: Observable<boolean>,
+    private readonly scope: ObservableScope,
+  ) {
     this.selected$.subscribe((device) => {
       // Let the hosting application know which output device has been selected.
       // This information is probably only of interest if the earpiece mode has
       // been selected - for example, Element X iOS listens to this to determine
       // whether it should enable the proximity sensor.
       if (device !== undefined) {
-        logger.info("[controlled-output] setAudioDeviceSelect called:", device);
+        logger.info("[controlled-output] onAudioDeviceSelect called:", device);
         window.controls.onAudioDeviceSelect?.(device.id);
         // Also invoke the deprecated callback for backward compatibility
         window.controls.onOutputDeviceSelect?.(device.id);
@@ -327,6 +339,9 @@ class ControlledAudioOutput
     this.available$.subscribe((available) => {
       logger.info("[controlled-output] available devices:", available);
     });
+    this.availableRaw$.subscribe((availableRaw) => {
+      logger.info("[controlled-output] available raw devices:", availableRaw);
+    });
   }
 }
 
@@ -393,7 +408,7 @@ export class MediaDevices {
     AudioOutputDeviceLabel,
     SelectedAudioOutputDevice
   > = getUrlParams().controlledAudioDevices
-    ? new ControlledAudioOutput(this.scope)
+    ? new ControlledAudioOutput(this.usingNames$, this.scope)
     : new AudioOutput(this.usingNames$, this.scope);
 
   public readonly videoInput: MediaDevice<DeviceLabel, SelectedDevice> =