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

lib/src/voip/call.dart

@@ -329,6 +329,7 @@ class CallSession {
   bool waitForLocalAVStream = false;
   int toDeviceSeq = 0;
   int candidateSendTries = 0;
+  bool get isGroupCall => groupCallId != null;
 
   final CachedStreamController<CallSession> onCallStreamsChanged =
       CachedStreamController();
@@ -596,6 +597,21 @@ class CallSession {
     }
   }
 
+  Future<void> updateAudioDevice([MediaStreamTrack? track]) async {
+    final sender = usermediaSenders
+        .where((element) => element.track!.kind == 'audio')
+        .first;
+    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().first;
+      await sender.replaceTrack(audioTrack);
+    }
+  }
+
   void _updateRemoteSDPStreamMetadata(SDPStreamMetadata metadata) {
     remoteSDPStreamMetadata = metadata;
     remoteSDPStreamMetadata!.sdpStreamMetadatas

lib/src/voip/group_call.dart

@@ -381,6 +381,15 @@ 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(