feat: 倍速、画质、音质调节

lib/plugin/pl_player/models/play_speed.dart

@@ -0,0 +1,37 @@
+enum PlaySpeed {
+  pointTwoFive,
+  pointFive,
+  pointSevenFive,
+  one,
+  onePointTwoFive,
+  onePointFive,
+  onePointSevenFive,
+  two
+}
+
+extension PlaySpeedExtension on PlaySpeed {
+  static final List<String> _descList = [
+    '0.25倍',
+    '0.5倍',
+    '0.75倍',
+    '正常速度',
+    '1.25倍',
+    '1.5倍',
+    '1.75倍',
+    '2.0倍',
+  ];
+  get description => _descList[index];
+
+  static final List<double> _valueList = [
+    0.25,
+    0.5,
+    0.75,
+    1.0,
+    1.25,
+    1.5,
+    1.75,
+    2.0
+  ];
+  get value => _valueList[index];
+  get defaultValue => _valueList[3];
+}