Merge branch 'fix/audio-input-auto-selection' into 'main'

chore: update audio device for call when input device changes.

Closes famedly-web#587

See merge request famedly/company/frontend/famedlysdk!1144

lib/src/voip/call.dart

@@ -20,6 +20,7 @@ import 'dart:async';
 import 'dart:core';
 import 'dart:math';
 
+import 'package:collection/collection.dart';
 import 'package:webrtc_interface/webrtc_interface.dart';
 
 import 'package:matrix/matrix.dart';
@@ -329,6 +330,7 @@ class CallSession {
   bool waitForLocalAVStream = false;
   int toDeviceSeq = 0;
   int candidateSendTries = 0;
+  bool get isGroupCall => groupCallId != null;
 
   final CachedStreamController<CallSession> onCallStreamsChanged =
       CachedStreamController();
@@ -596,6 +598,22 @@ class CallSession {
     }
   }
 
+  Future<void> updateAudioDevice([MediaStreamTrack? track]) async {
+    final sender = usermediaSenders
+        .firstWhereOrNull((element) => element.track!.kind == 'audio');
+    await sender?.track?.stop();
+    if (track != null) {
+      await sender?.replaceTrack(track);
+    } else {
+      final stream =
+          await voip.delegate.mediaDevices.getUserMedia({'audio': true});
+      final audioTrack = stream.getAudioTracks().firstOrNull;
+      if (audioTrack != null) {
+        await sender?.replaceTrack(audioTrack);
+      }
+    }
+  }
+
   void _updateRemoteSDPStreamMetadata(SDPStreamMetadata metadata) {
     remoteSDPStreamMetadata = metadata;
     remoteSDPStreamMetadata!.sdpStreamMetadatas

lib/src/voip/group_call.dart

@@ -394,6 +394,15 @@ class GroupCall {
     return newStream;
   }
 
+  Future<void> updateAudioDevice() async {
+    final stream =
+        await voip.delegate.mediaDevices.getUserMedia({'audio': true});
+    final audioTrack = stream.getAudioTracks().first;
+    for (final call in calls) {
+      await call.updateAudioDevice(audioTrack);
+    }
+  }
+
   void updateLocalUsermediaStream(WrappedMediaStream stream) {
     if (localUserMediaStream != null) {
       final oldStream = localUserMediaStream!.stream;

lib/src/voip/voip.dart

@@ -129,6 +129,22 @@ class VoIP {
           break;
       }
     });
+
+    delegate.mediaDevices.ondevicechange = _onDeviceChange;
+  }
+
+  Future<void> _onDeviceChange(dynamic _) async {
+    Logs().v('[VOIP] _onDeviceChange');
+    for (final call in calls.values) {
+      if (call.state == CallState.kConnected && !call.isGroupCall) {
+        await call.updateAudioDevice();
+      }
+    }
+    for (final groupCall in groupCalls.values) {
+      if (groupCall.state == GroupCallState.Entered) {
+        await groupCall.updateAudioDevice();
+      }
+    }
   }
 
   Future<void> onCallInvite(