opt: enum

Signed-off-by: bggRGjQaUbCoE <githubaccount56556@proton.me>

lib/models/common/video/audio_quality.dart

@@ -0,0 +1,30 @@
+// ignore_for_file: constant_identifier_names
+
+enum AudioQuality { k64, k132, k192, dolby, hiRes }
+
+extension AudioQualityExt on AudioQuality {
+  static const List<int> _codeList = [
+    30216,
+    30232,
+    30280,
+    30250,
+    30251,
+  ];
+  int get code => _codeList[index];
+
+  static AudioQuality? fromCode(int code) {
+    final index = _codeList.indexOf(code);
+    if (index != -1) {
+      return AudioQuality.values[index];
+    }
+    return null;
+  }
+
+  String get description => const [
+        '64K',
+        '132K',
+        '192K',
+        '杜比全景声',
+        'Hi-Res无损',
+      ][index];
+}