feat: 字幕展示逻辑

lib/models/video/play/subtitle.dart

@@ -0,0 +1,23 @@
+enum SubtitlePreference { off, on, withoutAi }
+
+extension SubtitlePreferenceDesc on SubtitlePreference {
+  static final List<String> _descList = [
+    '默认不显示字幕',
+    '选择第一个可用字幕',
+    '跳过自动生成(ai)字幕，选择第一个可用字幕'
+  ];
+  get description => _descList[index];
+}
+
+extension SubtitlePreferenceCode on SubtitlePreference {
+  static final List<String> _codeList = ['off', 'on', 'withoutAi'];
+  get code => _codeList[index];
+
+  static SubtitlePreference? fromCode(String code) {
+    final index = _codeList.indexOf(code);
+    if (index != -1) {
+      return SubtitlePreference.values[index];
+    }
+    return null;
+  }
+}

lib/pages/setting/play_setting.dart

@@ -9,6 +9,7 @@ import 'package:PiliPalaX/plugin/pl_player/index.dart';
 import 'package:PiliPalaX/services/service_locator.dart';
 import 'package:PiliPalaX/utils/storage.dart';
 
+import '../../models/video/play/subtitle.dart';
 import 'widgets/switch_item.dart';
 
 class PlaySetting extends StatefulWidget {
@@ -23,6 +24,7 @@ class _PlaySettingState extends State<PlaySetting> {
   late dynamic defaultVideoQa;
   late dynamic defaultAudioQa;
   late dynamic defaultDecode;
+  late String defaultSubtitlePreference;
   late int defaultFullScreenMode;
   late int defaultBtmProgressBehavior;
 
@@ -39,6 +41,8 @@ class _PlaySettingState extends State<PlaySetting> {
         defaultValue: FullScreenMode.values.first.code);
     defaultBtmProgressBehavior = setting.get(SettingBoxKey.btmProgressBehavior,
         defaultValue: BtmProgresBehavior.values.first.code);
+    defaultSubtitlePreference = setting.get(SettingBoxKey.subtitlePreference,
+        defaultValue: SubtitlePreference.values.first.code);
   }
 
   @override
@@ -91,6 +95,33 @@ class _PlaySettingState extends State<PlaySetting> {
             setKey: SettingBoxKey.enableQuickDouble,
             defaultVal: true,
           ),
+          ListTile(
+            dense: false,
+            title: Text('自动启用字幕', style: titleStyle),
+            subtitle: Text(
+                '当前选择偏好：'
+                '${SubtitlePreferenceCode.fromCode(defaultSubtitlePreference)!.description}',
+                style: subTitleStyle),
+            onTap: () async {
+              String? result = await showDialog(
+                context: context,
+                builder: (context) {
+                  return SelectDialog<String>(
+                      title: '字幕选择偏好',
+                      value: setting.get(SettingBoxKey.subtitlePreference,
+                          defaultValue: SubtitlePreference.values.first.code),
+                      values: SubtitlePreference.values.map((e) {
+                        return {'title': e.description, 'value': e.code};
+                      }).toList());
+                },
+              );
+              if (result != null) {
+                setting.put(SettingBoxKey.subtitlePreference, result);
+                defaultSubtitlePreference = result;
+                setState(() {});
+              }
+            },
+          ),
           const SetSwitchItem(
             title: '自动全屏',
             subTitle: '视频开始播放时进入全屏',

lib/plugin/pl_player/controller.dart

@@ -22,6 +22,8 @@ import 'package:PiliPalaX/utils/feed_back.dart';
 import 'package:PiliPalaX/utils/storage.dart';
 import 'package:screen_brightness/screen_brightness.dart';
 import 'package:universal_platform/universal_platform.dart';
+
+import '../../models/video/play/subtitle.dart';
 // import 'package:wakelock_plus/wakelock_plus.dart';
 
 Box videoStorage = GStrorage.video;
@@ -379,9 +381,6 @@ class PlPlayerController {
       // 获取视频时长 00:00
       _duration.value = duration ?? _videoPlayerController!.state.duration;
       updateDurationSecond();
-      if (videoType.value != 'live') {
-        refreshSubtitles();
-      }
       // 数据加载完成
       dataStatus.status.value = DataStatus.loaded;
 
@@ -390,6 +389,25 @@ class PlPlayerController {
         startListeners();
       }
       await _initializePlayer(seekTo: seekTo, duration: _duration.value);
+      if (videoType.value != 'live') {
+        refreshSubtitles().then((value) {
+          if (_vttSubtitles.isNotEmpty){
+            String preference = setting.get(SettingBoxKey.subtitlePreference,
+                defaultValue: SubtitlePreference.values.first.index);
+            if (preference == 'on') {
+              setSubtitle(vttSubtitles[1]);
+            } else if (preference == 'withoutAi') {
+              for (int i = 1; i < _vttSubtitles.length; i++) {
+                if (_vttSubtitles[i]['language']!.startsWith('ai')) {
+                  continue;
+                }
+                setSubtitle(vttSubtitles[i]);
+                break;
+              }
+            }
+          }
+        });
+      }
       bool autoEnterFullcreen =
           setting.get(SettingBoxKey.enableAutoEnter, defaultValue: false);
       if (autoEnterFullcreen && _isFirstTime) {
@@ -1095,7 +1113,7 @@ class PlPlayerController {
     }
   }
 
-  void refreshSubtitles() async {
+  Future refreshSubtitles() async {
     _vttSubtitles.clear();
     Map res = await VideoHttp.subtitlesJson(bvid: _bvid, cid: _cid);
     if (!res["status"]) {
@@ -1105,11 +1123,11 @@ class PlPlayerController {
       return;
     }
     _vttSubtitles.value = await VideoHttp.vttSubtitles(res["data"]);
-    if (_vttSubtitles.isEmpty) {
+    // if (_vttSubtitles.isEmpty) {
     //   SmartDialog.showToast('字幕均加载失败');
+    // }
     return;
   }
-  }
 
   // 设定字幕轨道
   setSubtitle(Map<String, String> s) {

lib/utils/storage.dart

@@ -95,6 +95,7 @@ class SettingBoxKey {
       enableCDN = 'enableCDN',
       autoPiP = 'autoPiP',
       enableAutoLongPressSpeed = 'enableAutoLongPressSpeed',
+      subtitlePreference = 'subtitlePreference',
 
       // youtube 双击快进快退
       enableQuickDouble = 'enableQuickDouble',