feat: 支持不开启后台播放时的音频打断 支持有通知是减小音量通知结束时回复

lib/services/audio_session.dart

@@ -0,0 +1,53 @@
+import 'package:audio_session/audio_session.dart';
+import 'package:pilipala/plugin/pl_player/index.dart';
+
+class AudioSessionHandler {
+  late AudioSession session;
+  bool _playInterrupted = false;
+
+  setActive(bool active) {
+    session.setActive(active);
+  }
+
+  AudioSessionHandler() {
+    initSession();
+  }
+
+  Future<void> initSession() async {
+    session = await AudioSession.instance;
+    session.configure(const AudioSessionConfiguration.music());
+
+    session.interruptionEventStream.listen((event) {
+      final player = PlPlayerController.getInstance();
+      if (event.begin) {
+        switch (event.type) {
+          case AudioInterruptionType.duck:
+            player.setVolume(player.volume.value * 0.5);
+            break;
+          case AudioInterruptionType.pause:
+          case AudioInterruptionType.unknown:
+            player.pause();
+            _playInterrupted = true;
+            break;
+        }
+      } else {
+        switch (event.type) {
+          case AudioInterruptionType.duck:
+            player.setVolume(player.volume.value * 2);
+            break;
+          case AudioInterruptionType.pause:
+            if (_playInterrupted) PlPlayerController.getInstance().play();
+            break;
+          case AudioInterruptionType.unknown:
+            break;
+        }
+        _playInterrupted = false;
+      }
+    });
+
+    // 耳机拔出暂停
+    session.becomingNoisyEventStream.listen((_) {
+      PlPlayerController.getInstance().pause();
+    });
+  }
+}