add enableVisualizer to RoomOptions.

example/lib/pages/prejoin.dart

@@ -127,9 +127,12 @@ class _PreJoinPageState extends State<PreJoinPage> {
     }
 
     if (_selectedAudioDevice != null) {
-      _audioTrack = await LocalAudioTrack.create(AudioCaptureOptions(
-        deviceId: _selectedAudioDevice!.deviceId,
-      ));
+      _audioTrack = await LocalAudioTrack.create(
+        AudioCaptureOptions(
+          deviceId: _selectedAudioDevice!.deviceId,
+        ),
+        true, // enableVisualizer
+      );
       await _audioTrack!.start();
     }
   }

lib/src/core/room.dart

@@ -576,6 +576,7 @@ class Room extends DisposableChangeNotifier with EventsEmittable<RoomEvent> {
           trackSid,
           receiver: event.receiver,
           audioOutputOptions: roomOptions.defaultAudioOutputOptions,
+          enableVisualizer: roomOptions.enableVisualizer,
         );
       } on TrackSubscriptionExceptionEvent catch (event) {
         logger.severe('addSubscribedMediaTrack() throwed ${event}');

lib/src/options.dart

@@ -115,6 +115,9 @@ class RoomOptions {
   /// Options for end-to-end encryption.
   final E2EEOptions? e2eeOptions;
 
+  /// Enable visualizer for audio tracks. Defaults to true.
+  final bool enableVisualizer;
+
   const RoomOptions({
     this.defaultCameraCaptureOptions = const CameraCaptureOptions(),
     this.defaultScreenShareCaptureOptions = const ScreenShareCaptureOptions(),
@@ -126,6 +129,7 @@ class RoomOptions {
     this.dynacast = false,
     this.stopLocalTrackOnUnpublish = true,
     this.e2eeOptions,
+    this.enableVisualizer = true,
   });
 
   RoomOptions copyWith({

lib/src/participant/local.dart

@@ -604,7 +604,8 @@ class LocalParticipant extends Participant<LocalTrackPublication> {
       } else if (source == TrackSource.microphone) {
         AudioCaptureOptions captureOptions =
             audioCaptureOptions ?? room.roomOptions.defaultAudioCaptureOptions;
-        final track = await LocalAudioTrack.create(captureOptions);
+        final track = await LocalAudioTrack.create(
+            captureOptions, room.roomOptions.enableVisualizer);
         return await publishAudioTrack(track);
       } else if (source == TrackSource.screenShareVideo) {
         ScreenShareCaptureOptions captureOptions = screenShareCaptureOptions ??

lib/src/participant/remote.dart

@@ -112,6 +112,7 @@ class RemoteParticipant extends Participant<RemoteTrackPublication> {
     String trackSid, {
     rtc.RTCRtpReceiver? receiver,
     AudioOutputOptions audioOutputOptions = const AudioOutputOptions(),
+    bool? enableVisualizer,
   }) async {
     logger.fine('addSubscribedMediaTrack()');
 
@@ -153,8 +154,8 @@ class RemoteParticipant extends Participant<RemoteTrackPublication> {
           RemoteVideoTrack(pub.source, stream, mediaTrack, receiver: receiver);
     } else if (pub.kind == TrackType.AUDIO) {
       // audio track
-      track =
-          RemoteAudioTrack(pub.source, stream, mediaTrack, receiver: receiver);
+      track = RemoteAudioTrack(pub.source, stream, mediaTrack,
+          receiver: receiver, enableVisualizer: enableVisualizer);
 
       var listener = track.createListener();
       listener.on<AudioPlaybackStarted>((event) {

lib/src/track/local/audio.dart

@@ -118,17 +118,20 @@ class LocalAudioTrack extends LocalTrack
     TrackSource source,
     rtc.MediaStream stream,
     rtc.MediaStreamTrack track,
-    this.currentOptions,
-  ) : super(
+    this.currentOptions, {
+    bool? enableVisualizer,
+  }) : super(
           TrackType.AUDIO,
           source,
           stream,
           track,
+          enableVisualizer: enableVisualizer,
         );
 
   /// Creates a new audio track from the default audio input device.
   static Future<LocalAudioTrack> create([
     AudioCaptureOptions? options,
+    bool? enableVisualizer,
   ]) async {
     options ??= const AudioCaptureOptions();
     final stream = await LocalTrack.createStream(options);
@@ -138,6 +141,7 @@ class LocalAudioTrack extends LocalTrack
       stream,
       stream.getAudioTracks().first,
       options,
+      enableVisualizer: enableVisualizer,
     );
   }
 }

lib/src/track/local/local.dart

@@ -64,10 +64,18 @@ mixin AudioTrack on Track {
   StreamSubscription? _streamSubscription;
 
   @override
-  Future<void> onStarted() => startVisualizer();
+  Future<void> onStarted() async {
+    if (enableVisualizer == true) {
+      await startVisualizer();
+    }
+  }
 
   @override
-  Future<void> onStopped() => stopVisualizer();
+  Future<void> onStopped() async {
+    if (enableVisualizer == true) {
+      await stopVisualizer();
+    }
+  }
 
   Future<void> startVisualizer() async {
     if (_eventChannel != null) {
@@ -115,12 +123,14 @@ abstract class LocalTrack extends Track {
     TrackType kind,
     TrackSource source,
     rtc.MediaStream mediaStream,
-    rtc.MediaStreamTrack mediaStreamTrack,
-  ) : super(
+    rtc.MediaStreamTrack mediaStreamTrack, {
+    bool? enableVisualizer,
+  }) : super(
           kind,
           source,
           mediaStream,
           mediaStreamTrack,
+          enableVisualizer: enableVisualizer,
         ) {
     mediaStreamTrack.onEnded = () {
       logger.fine('MediaStreamTrack.onEnded()');

lib/src/track/remote/audio.dart

@@ -33,13 +33,14 @@ class RemoteAudioTrack extends RemoteTrack
   String? _deviceId;
   RemoteAudioTrack(
       TrackSource source, rtc.MediaStream stream, rtc.MediaStreamTrack track,
-      {rtc.RTCRtpReceiver? receiver})
+      {rtc.RTCRtpReceiver? receiver, bool? enableVisualizer})
       : super(
           TrackType.AUDIO,
           source,
           stream,
           track,
           receiver: receiver,
+          enableVisualizer: enableVisualizer,
         );
 
   @override

lib/src/track/remote/remote.dart

@@ -22,13 +22,14 @@ import '../track.dart';
 abstract class RemoteTrack extends Track {
   RemoteTrack(TrackType kind, TrackSource source, rtc.MediaStream stream,
       rtc.MediaStreamTrack track,
-      {rtc.RTCRtpReceiver? receiver})
+      {rtc.RTCRtpReceiver? receiver, bool? enableVisualizer})
       : super(
           kind,
           source,
           stream,
           track,
           receiver: receiver,
+          enableVisualizer: enableVisualizer,
         );
 
   @override

lib/src/track/track.dart

@@ -59,8 +59,10 @@ abstract class Track extends DisposableChangeNotifier
 
   rtc.RTCRtpReceiver? receiver;
 
+  final bool? enableVisualizer;
+
   Track(this.kind, this.source, this._mediaStream, this._mediaStreamTrack,
-      {this.receiver}) {
+      {this.receiver, this.enableVisualizer}) {
     // Any event emitted will trigger ChangeNotifier
     events.listen((event) {
       logger.finer('[TrackEvent] $event, will notifyListeners()');