Initial commit

lib/providers/player_engine_override_provider.dart

@@ -0,0 +1,41 @@
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import 'shared/settings_persistence.dart';
+
+
+enum PlayerEngineOverride {
+  auto('自动'),
+  fvp('fvp (libmdk)'),
+  mpv('mpv (media_kit)'),
+  media3('Media3 (ExoPlayer+FFmpeg)');
+
+  final String label;
+  const PlayerEngineOverride(this.label);
+}
+
+class PlayerEngineOverrideNotifier extends AsyncNotifier<PlayerEngineOverride>
+    with SettingsPersistence {
+  static const _key = 'smplayer.player_engine_override';
+
+  @override
+  Future<PlayerEngineOverride> build() async {
+    final prefs = await getPrefs();
+    final raw = prefs.getString(_key);
+    if (raw == null) return PlayerEngineOverride.auto;
+    try {
+      return PlayerEngineOverride.values.byName(raw);
+    } catch (_) {
+      return PlayerEngineOverride.auto;
+    }
+  }
+
+  Future<void> setOverride(PlayerEngineOverride value) async {
+    state = AsyncValue.data(value);
+    await persistField(_key, value.name);
+  }
+}
+
+final playerEngineOverrideProvider =
+    AsyncNotifierProvider<PlayerEngineOverrideNotifier, PlayerEngineOverride>(
+      PlayerEngineOverrideNotifier.new,
+    );