Fix start local audio

.changes/fix-audio-visualizer-unpublished-track

@@ -0,0 +1 @@
+patch type="fixed" "Fix audio visualizer not working for unpublished local audio tracks"

lib/src/hardware/hardware.dart

@@ -14,6 +14,8 @@
 
 import 'dart:async';
 
+import 'package:flutter/foundation.dart' show kIsWeb;
+
 import 'package:collection/collection.dart';
 import 'package:flutter_webrtc/flutter_webrtc.dart' as rtc;
 
@@ -194,6 +196,31 @@ class Hardware {
     });
   }
 
+  /// Explicitly starts the audio device module's recording pipeline.
+  ///
+  /// This is called automatically when a [LocalAudioTrack] is started, but
+  /// can be called manually for pre-join scenarios (e.g. audio visualization
+  /// before connecting to a room).
+  ///
+  /// No-ops on web. Safe to call multiple times (idempotent).
+  Future<void> startLocalRecording() async {
+    if (!kIsWeb) {
+      await rtc.NativeAudioManagement.startLocalRecording();
+    }
+  }
+
+  /// Stops the audio device module's recording pipeline.
+  ///
+  /// Normally you don't need to call this — WebRTC manages the ADM lifecycle.
+  /// Use this only for explicit control (e.g. CallKit flows).
+  ///
+  /// No-ops on web.
+  Future<void> stopLocalRecording() async {
+    if (!kIsWeb) {
+      await rtc.NativeAudioManagement.stopLocalRecording();
+    }
+  }
+
   dynamic _onDeviceChange(dynamic _) async {
     final devices = await enumerateDevices();
     selectedAudioInput ??= devices.firstWhereOrNull((element) => element.kind == 'audioinput');

lib/src/track/local/audio.dart

@@ -14,6 +14,8 @@
 
 import 'dart:async';
 
+import 'package:flutter/foundation.dart' show kIsWeb;
+
 import 'package:collection/collection.dart';
 import 'package:flutter_webrtc/flutter_webrtc.dart' as rtc;
 import 'package:meta/meta.dart';
@@ -110,6 +112,15 @@ class LocalAudioTrack extends LocalTrack with AudioTrack, LocalAudioManagementMi
     return senderStats;
   }
 
+  @override
+  Future<bool> start() async {
+    if (isActive) return false;
+    if (!kIsWeb) {
+      await rtc.NativeAudioManagement.startLocalRecording();
+    }
+    return await super.start();
+  }
+
   // private constructor
   @internal
   LocalAudioTrack(