feat: 解码格式分为首选和次选，调整部分设置文案

lib/pages/setting/play_setting.dart

@@ -24,6 +24,7 @@ class _PlaySettingState extends State<PlaySetting> {
   late dynamic defaultVideoQa;
   late dynamic defaultAudioQa;
   late dynamic defaultDecode;
+  late dynamic secondDecode;
   late String defaultSubtitlePreference;
   late int defaultFullScreenMode;
   late int defaultBtmProgressBehavior;
@@ -37,6 +38,8 @@ class _PlaySettingState extends State<PlaySetting> {
         defaultValue: AudioQuality.values.last.code);
     defaultDecode = setting.get(SettingBoxKey.defaultDecode,
         defaultValue: VideoDecodeFormats.values.last.code);
+    secondDecode = setting.get(SettingBoxKey.secondDecode,
+        defaultValue: VideoDecodeFormats.values[1].code);
     defaultFullScreenMode = setting.get(SettingBoxKey.fullScreenMode,
         defaultValue: FullScreenMode.values.first.code);
     defaultBtmProgressBehavior = setting.get(SettingBoxKey.btmProgressBehavior,
@@ -163,7 +166,7 @@ class _PlaySettingState extends State<PlaySetting> {
             dense: false,
             title: Text('默认画质', style: titleStyle),
             subtitle: Text(
-              '当前画质${VideoQualityCode.fromCode(defaultVideoQa)!.description!}',
+              '当前画质：${VideoQualityCode.fromCode(defaultVideoQa)!.description!}',
               style: subTitleStyle,
             ),
             onTap: () async {
@@ -189,7 +192,7 @@ class _PlaySettingState extends State<PlaySetting> {
             dense: false,
             title: Text('默认音质', style: titleStyle),
             subtitle: Text(
-              '当前音质${AudioQualityCode.fromCode(defaultAudioQa)!.description!}',
+              '当前音质：${AudioQualityCode.fromCode(defaultAudioQa)!.description!}',
               style: subTitleStyle,
             ),
             onTap: () async {
@@ -213,9 +216,9 @@ class _PlaySettingState extends State<PlaySetting> {
           ),
           ListTile(
             dense: false,
-            title: Text('默认解码格式', style: titleStyle),
+            title: Text('首选解码格式', style: titleStyle),
             subtitle: Text(
-              '当前解码格式${VideoDecodeFormatsCode.fromCode(defaultDecode)!.description!}',
+              '首选解码格式：${VideoDecodeFormatsCode.fromCode(defaultDecode)!.description!}，请根据设备支持情况与需求调整',
               style: subTitleStyle,
             ),
             onTap: () async {
@@ -237,9 +240,35 @@ class _PlaySettingState extends State<PlaySetting> {
               }
             },
           ),
+          ListTile(
+            dense: false,
+            title: Text('次选解码格式', style: titleStyle),
+            subtitle: Text(
+              '非杜比视频次选：${VideoDecodeFormatsCode.fromCode(secondDecode)!.description!}，仍无则选择首个提供的解码格式',
+              style: subTitleStyle,
+            ),
+            onTap: () async {
+              String? result = await showDialog(
+                context: context,
+                builder: (context) {
+                  return SelectDialog<String>(
+                      title: '次选解码格式',
+                      value: secondDecode,
+                      values: VideoDecodeFormats.values.map((e) {
+                        return {'title': e.description, 'value': e.code};
+                      }).toList());
+                },
+              );
+              if (result != null) {
+                secondDecode = result;
+                setting.put(SettingBoxKey.secondDecode, result);
+                setState(() {});
+              }
+            },
+          ),
           const SetSwitchItem(
             title: '开启硬解',
-            subTitle: '以较低功耗播放视频',
+            subTitle: '以较低功耗播放视频，若使用中异常卡死，请尝试关闭',
             setKey: SettingBoxKey.enableHA,
             defaultVal: true,
           ),

lib/pages/video/detail/controller.dart

@@ -88,6 +88,7 @@ class VideoDetailController extends GetxController
   late bool enableCDN;
   late int? cacheVideoQa;
   late String cacheDecode;
+  late String cacheSecondDecode;
   late int cacheAudioQa;
 
   PersistentBottomSheetController? replyReplyBottomSheetCtr;
@@ -136,6 +137,8 @@ class VideoDetailController extends GetxController
     // 预设的解码格式
     cacheDecode = setting.get(SettingBoxKey.defaultDecode,
         defaultValue: VideoDecodeFormats.values.last.code);
+    cacheSecondDecode = setting.get(SettingBoxKey.secondDecode,
+        defaultValue: VideoDecodeFormats.values[1].code);
     cacheAudioQa = setting.get(SettingBoxKey.defaultAudioQa,
         defaultValue: AudioQuality.hiRes.code);
     oid.value = IdUtils.bv2av(Get.parameters['bvid']!);
@@ -172,23 +175,52 @@ class VideoDetailController extends GetxController
     /// 根据currentVideoQa和currentDecodeFormats 重新设置videoUrl
     List<VideoItem> videoList =
         data.dash!.video!.where((i) => i.id == currentVideoQa.code).toList();
+
+    final List supportDecodeFormats = videoList.map((e) => e.codecs!).toList();
+    VideoDecodeFormats defaultDecodeFormats =
+        VideoDecodeFormatsCode.fromString(cacheDecode)!;
+    VideoDecodeFormats secondDecodeFormats =
+        VideoDecodeFormatsCode.fromString(cacheSecondDecode)!;
     try {
-      firstVideo = videoList
+      // 当前视频没有对应格式返回第一个
-          .firstWhere((i) => i.codecs!.startsWith(currentDecodeFormats.code));
+      int flag = 0;
-    } catch (_) {
+      for (var i in supportDecodeFormats) {
-      if (currentVideoQa == VideoQuality.dolbyVision) {
+        if (i.startsWith(currentDecodeFormats.code)) {
+          flag = 1;
+          break;
+        } else if (i.startsWith(defaultDecodeFormats.code)) {
+          flag += 2;
+        } else if (i.startsWith(secondDecodeFormats.code)) {
+          flag += 4;
+        }
+      }
+      if (flag == 1) {//currentDecodeFormats
         firstVideo = videoList.first;
+      } else {
+        if (currentVideoQa == VideoQuality.dolbyVision) {
           currentDecodeFormats =
               VideoDecodeFormatsCode.fromString(videoList.first.codecs!)!;
-      } else {
+          firstVideo = videoList.first;
-        // 当前格式不可用
+        } else if (flag == 2 || flag == 6) {//defaultDecodeFormats
-        currentDecodeFormats = VideoDecodeFormatsCode.fromString(setting.get(
+          currentDecodeFormats = defaultDecodeFormats;
-            SettingBoxKey.defaultDecode,
+          firstVideo = videoList.firstWhere(
-            defaultValue: VideoDecodeFormats.values.last.code))!;
+            (i) => i.codecs!.startsWith(defaultDecodeFormats.code),
-        firstVideo = videoList
+          );
-            .firstWhere((i) => i.codecs!.startsWith(currentDecodeFormats.code));
+        } else if (flag == 4) {//secondDecodeFormats
+          currentDecodeFormats = secondDecodeFormats;
+          firstVideo = videoList.firstWhere(
+            (i) => i.codecs!.startsWith(secondDecodeFormats.code),
+          );
+        } else if (flag == 0) {
+          currentDecodeFormats =
+              VideoDecodeFormatsCode.fromString(supportDecodeFormats.first)!;
+          firstVideo = videoList.first;
         }
       }
+    } catch (err) {
+      SmartDialog.showToast('DecodeFormats error: $err');
+    }
+
     videoUrl = firstVideo.baseUrl!;
 
     /// 根据currentAudioQa 重新设置audioUrl
@@ -292,23 +324,30 @@ class VideoDetailController extends GetxController
         // 根据画质选编码格式
         final List supportDecodeFormats =
             supportFormats.firstWhere((e) => e.quality == resVideoQa).codecs!;
-        // 默认从设置中取AVC
+        // 默认从设置中取AV1
         currentDecodeFormats = VideoDecodeFormatsCode.fromString(cacheDecode)!;
+        VideoDecodeFormats secondDecodeFormats =
+            VideoDecodeFormatsCode.fromString(cacheSecondDecode)!;
         try {
           // 当前视频没有对应格式返回第一个
-          bool flag = false;
+          int flag = 0;
           for (var i in supportDecodeFormats) {
             if (i.startsWith(currentDecodeFormats.code)) {
-              flag = true;
+              flag = 1;
+              break;
+            } else if (i.startsWith(secondDecodeFormats.code)) {
+              flag += 2;
             }
           }
-          currentDecodeFormats = flag
+          if (flag == 2) {
-              ? currentDecodeFormats
+            currentDecodeFormats = secondDecodeFormats;
-              : VideoDecodeFormatsCode.fromString(supportDecodeFormats.first)!;
+          } else if (flag == 0) {
+            currentDecodeFormats =
+                VideoDecodeFormatsCode.fromString(supportDecodeFormats.first)!;
+          }
         } catch (err) {
           SmartDialog.showToast('DecodeFormats error: $err');
         }
-
         /// 取出符合当前解码格式的videoItem
         try {
           firstVideo = videosList.firstWhere(

lib/utils/storage.dart

@@ -82,6 +82,7 @@ class SettingBoxKey {
       autoPlayEnable = 'autoPlayEnable',
       fullScreenMode = 'fullScreenMode',
       defaultDecode = 'defaultDecode',
+      secondDecode = 'secondDecode',
       danmakuEnable = 'danmakuEnable',
       defaultToastOp = 'defaultToastOp',
       defaultPicQa = 'defaultPicQa',