fix: video renderer dispose issue and correctly handle metadataMuted …

…for TrackPublication. (#401)

* fix: video renderer dispose issue.

* remove strong-mode in analysis_options.yaml to compatible flutter 3.16.0.

* Correctly handle metadataMuted for TrackPublication.

analysis_options.yaml

@@ -32,7 +32,6 @@ analyzer:
   # https://dart.dev/guides/language/analysis-options#enabling-additional-type-checks
   # https://dash-overflow.net/articles/getting_started/#step-3-disabling-_implicit-dynamic_--_implicit-cast_
   #
-  strong-mode:
 
   #
   # exclude protobuf files

example/analysis_options.yaml

@@ -32,7 +32,6 @@ analyzer:
   # https://dart.dev/guides/language/analysis-options#enabling-additional-type-checks
   # https://dash-overflow.net/articles/getting_started/#step-3-disabling-_implicit-dynamic_--_implicit-cast_
   #
-  strong-mode:
 
   #
   # exclude protobuf files

lib/src/publication/track_publication.dart

@@ -32,6 +32,7 @@ abstract class TrackPublication<T extends Track> extends Disposable {
   final String name;
   final lk_models.TrackType kind;
   final TrackSource source;
+  bool _metadataMuted = false;
 
   /// The current [Track] for this publication (readonly).
   T? get track => _track;
@@ -40,7 +41,7 @@ abstract class TrackPublication<T extends Track> extends Disposable {
   /// The [Participant] this publication belongs to.
   abstract final Participant participant;
 
-  bool get muted => track?.muted ?? false;
+  bool get muted => _metadataMuted;
 
   /// If the [Track] is published with simulcast, only for video. (readonly)
   bool get simulcasted => _simulcasted;
@@ -72,6 +73,7 @@ abstract class TrackPublication<T extends Track> extends Disposable {
         kind = info.type,
         source = info.source.toLKType(),
         _simulcasted = info.simulcast,
+        _metadataMuted = info.muted,
         _mimeType = info.mimeType {
     updateFromInfo(info);
   }
@@ -84,6 +86,7 @@ abstract class TrackPublication<T extends Track> extends Disposable {
   void updateFromInfo(lk_models.TrackInfo info) {
     _simulcasted = info.simulcast;
     _mimeType = info.mimeType;
+    _metadataMuted = info.muted;
     if (info.type == lk_models.TrackType.VIDEO) {
       _dimensions = VideoDimensions(info.width, info.height);
     }

lib/src/widgets/video_track_renderer.dart

@@ -50,7 +50,7 @@ class VideoTrackRenderer extends StatefulWidget {
 }
 
 class _VideoTrackRendererState extends State<VideoTrackRenderer> {
-  final _renderer = rtc.RTCVideoRenderer();
+  rtc.RTCVideoRenderer? _renderer;
   bool _rendererReady = false;
   EventsListener<TrackEvent>? _listener;
   // Used to compute visibility information
@@ -60,9 +60,9 @@ class _VideoTrackRendererState extends State<VideoTrackRenderer> {
   void initState() {
     super.initState();
     _internalKey = widget.track.addViewKey();
-
     (() async {
-      await _renderer.initialize();
+      _renderer ??= rtc.RTCVideoRenderer();
+      await _renderer?.initialize();
       await _attach();
       setState(() => _rendererReady = true);
     })();
@@ -72,18 +72,18 @@ class _VideoTrackRendererState extends State<VideoTrackRenderer> {
   void dispose() {
     widget.track.removeViewKey(_internalKey);
     _listener?.dispose();
-    _renderer.srcObject = null;
-    _renderer.dispose();
+    _renderer?.srcObject = null;
+    _renderer?.dispose();
     super.dispose();
   }
 
   Future<void> _attach() async {
-    _renderer.srcObject = widget.track.mediaStream;
+    _renderer?.srcObject = widget.track.mediaStream;
     await _listener?.dispose();
     _listener = widget.track.createListener()
       ..on<TrackStreamUpdatedEvent>((event) {
         if (!mounted) return;
-        _renderer.srcObject = event.stream;
+        _renderer?.srcObject = event.stream;
       })
       ..on<LocalTrackOptionsUpdatedEvent>((event) {
         if (!mounted) return;
@@ -105,7 +105,7 @@ class _VideoTrackRendererState extends State<VideoTrackRenderer> {
 
     if ([BrowserType.safari, BrowserType.firefox].contains(lkBrowser()) &&
         oldWidget.key != widget.key) {
-      _renderer.srcObject = widget.track.mediaStream;
+      _renderer?.srcObject = widget.track.mediaStream;
     }
   }
 
@@ -121,7 +121,7 @@ class _VideoTrackRendererState extends State<VideoTrackRenderer> {
               widget.track.onVideoViewBuild?.call(_internalKey);
             });
             return rtc.RTCVideoView(
-              _renderer,
+              _renderer!,
               mirror: _shouldMirror(),
               filterQuality: FilterQuality.medium,
               objectFit: widget.fit,