opt: merge danmaku in loop (#813)

lib/http/danmaku.dart

@@ -2,15 +2,15 @@ import 'package:PiliPlus/grpc/bilibili/community/service/dm/v1.pb.dart';
 import 'package:PiliPlus/grpc/grpc_repo.dart';
 import 'package:PiliPlus/http/api.dart';
 import 'package:PiliPlus/http/init.dart';
+import 'package:PiliPlus/http/loading_state.dart';
 import 'package:PiliPlus/utils/storage.dart';
 import 'package:dio/dio.dart';
 
 class DanmakuHttp {
   // 获取视频弹幕
-  static Future queryDanmaku({
+  static Future<LoadingState<DmSegMobileReply>> queryDanmaku({
     required int cid,
     required int segmentIndex,
-    required bool mergeDanmaku,
     int queryCount = 1,
   }) async {
     // 构建参数对象
@@ -18,34 +18,18 @@ class DanmakuHttp {
         await GrpcRepo.dmSegMobile(cid: cid, segmentIndex: segmentIndex);
     if (!response['status']) {
       if (queryCount >= 3) {
-        return {'status': false};
+        return const Error('');
       } else {
         await Future.delayed(const Duration(seconds: 1));
         return await queryDanmaku(
           cid: cid,
           segmentIndex: segmentIndex,
-          mergeDanmaku: mergeDanmaku,
           queryCount: ++queryCount,
         );
       }
     }
     DmSegMobileReply data = response['data'];
-    if (mergeDanmaku && data.elems.isNotEmpty) {
-      final Map counts = <String, int>{};
-      data.elems.retainWhere((item) {
-        int? count = counts[item.content];
-        counts[item.content] = count != null ? count + 1 : 1;
-        return count == null;
-      });
-      for (DanmakuElem item in data.elems) {
-        item.clearAttr();
-        final count = counts[item.content];
-        if (count != 1) {
-          item.attr = count;
-        }
-      }
-    }
-    return {'status': true, 'data': data};
+    return LoadingState.success(data);
   }
 
   static Future shootDanmaku({

lib/pages/danmaku/controller.dart

@@ -6,15 +6,16 @@ class PlDanmakuController {
   PlDanmakuController(
     this.cid,
     this.plPlayerController,
-  );
+  ) : mergeDanmaku = plPlayerController.mergeDanmaku;
   final int cid;
   final PlPlayerController plPlayerController;
+  final bool mergeDanmaku;
 
   Map<int, List<DanmakuElem>> dmSegMap = {};
   // 已请求的段落标记
-  Map requestedSeg = {};
+  Set<int> requestedSeg = {};
 
-  static int segmentLength = 60 * 6 * 1000;
+  static const int segmentLength = 60 * 6 * 1000;
 
   void dispose() {
     dmSegMap.clear();
@@ -26,36 +27,48 @@ class PlDanmakuController {
   }
 
   Future<void> queryDanmaku(int segmentIndex) async {
-    if (requestedSeg[segmentIndex] == true) {
+    if (requestedSeg.contains(segmentIndex)) {
       return;
     }
-    requestedSeg[segmentIndex] = true;
-    final Map result = await DanmakuHttp.queryDanmaku(
+    requestedSeg.add(segmentIndex);
+    final result = await DanmakuHttp.queryDanmaku(
       cid: cid,
       segmentIndex: segmentIndex + 1,
-      mergeDanmaku: plPlayerController.mergeDanmaku,
     );
-    if (result['status']) {
-      if (result['data'].elems.isNotEmpty) {
-        for (DanmakuElem element in result['data'].elems) {
-          if (element.mode == 7 && !plPlayerController.showSpecialDanmaku) {
-            continue;
+
+    if (result.isSuccess) {
+      final data = result.data;
+      if (data.elems.isNotEmpty) {
+        final Map<String, int> counts = {};
+        if (mergeDanmaku) {
+          data.elems.retainWhere((item) {
+            int? count = counts[item.content];
+            counts[item.content] = count != null ? count + 1 : 1;
+            return count == null;
+          });
+        }
+
+        for (final element in data.elems) {
+          if (mergeDanmaku) {
+            final count = counts[element.content];
+            if (count != 1) {
+              element.attr = count!;
+            } else {
+              element.clearAttr();
+            }
           }
           int pos = element.progress ~/ 100; //每0.1秒存储一次
-          if (dmSegMap[pos] == null) {
-            dmSegMap[pos] = [];
-          }
-          dmSegMap[pos]!.add(element);
+          (dmSegMap[pos] ??= []).add(element);
         }
       }
     } else {
-      requestedSeg[segmentIndex] = false;
+      requestedSeg.remove(segmentIndex);
     }
   }
 
   List<DanmakuElem>? getCurrentDanmaku(int progress) {
     int segmentIndex = calcSegment(progress);
-    if (requestedSeg[segmentIndex] != true) {
+    if (!requestedSeg.contains(segmentIndex)) {
       queryDanmaku(segmentIndex);
       return null;
     }

lib/pages/video/widgets/header_control.dart

@@ -1264,13 +1264,13 @@ class HeaderControlState extends State<HeaderControl> {
   /// 弹幕功能
   void showSetDanmaku() {
     // 屏蔽类型
-    const List<Map<String, dynamic>> blockTypesList = [
-      {'value': 5, 'label': '顶部'},
-      {'value': 2, 'label': '滚动'},
-      {'value': 4, 'label': '底部'},
-      {'value': 6, 'label': '彩色'},
+    const List<({int value, String label})> blockTypesList = [
+      (value: 5, label: '顶部'),
+      (value: 2, label: '滚动'),
+      (value: 4, label: '底部'),
+      (value: 6, label: '彩色'),
     ];
-    final List blockTypes = widget.controller.blockTypes;
+    final blockTypes = widget.controller.blockTypes;
     // 智能云屏蔽
     int danmakuWeight = widget.controller.danmakuWeight;
     // 显示区域
@@ -1501,16 +1501,14 @@ class HeaderControlState extends State<HeaderControl> {
                     padding: const EdgeInsets.only(top: 12),
                     child: Row(
                       children: [
-                        for (final Map<String, dynamic> i
+                        for (final (value: value, label: label)
                             in blockTypesList) ...[
                           ActionRowLineItem(
                             onTap: () {
-                              final bool isChoose =
-                                  blockTypes.contains(i['value']);
-                              if (isChoose) {
-                                blockTypes.remove(i['value']);
+                              if (blockTypes.contains(value)) {
+                                blockTypes.remove(value);
                               } else {
-                                blockTypes.add(i['value']);
+                                blockTypes.add(value);
                               }
                               widget.controller
                                 ..blockTypes = blockTypes
@@ -1527,8 +1525,8 @@ class HeaderControlState extends State<HeaderControl> {
                                 );
                               } catch (_) {}
                             },
-                            text: i['label'],
-                            selectStatus: blockTypes.contains(i['value']),
+                            text: label,
+                            selectStatus: blockTypes.contains(value),
                           ),
                           const SizedBox(width: 10),
                         ]

lib/plugin/pl_player/controller.dart

@@ -249,7 +249,7 @@ class PlPlayerController {
   bool showDanmaku = true;
   late final mergeDanmaku = GStorage.mergeDanmaku;
   // 弹幕相关配置
-  late List blockTypes;
+  late Set<int> blockTypes;
   late double showArea;
   late double opacity;
   late double fontSize;
@@ -434,7 +434,11 @@ class PlPlayerController {
         setting.get(SettingBoxKey.enableShowDanmaku, defaultValue: true);
     danmakuWeight = setting.get(SettingBoxKey.danmakuWeight, defaultValue: 0);
     filters = GStorage.danmakuFilterRule;
-    blockTypes = setting.get(SettingBoxKey.danmakuBlockType, defaultValue: []);
+    blockTypes =
+        (setting.get(SettingBoxKey.danmakuBlockType, defaultValue: <int>[])
+                as Iterable)
+            .cast<int>()
+            .toSet();
     showArea = setting.get(SettingBoxKey.danmakuShowArea, defaultValue: 0.5);
     // 不透明度
     opacity = setting.get(SettingBoxKey.danmakuOpacity, defaultValue: 1.0);
@@ -1484,7 +1488,7 @@ class PlPlayerController {
   void putDanmakuSettings() {
     setting
       ..put(SettingBoxKey.danmakuWeight, danmakuWeight)
-      ..put(SettingBoxKey.danmakuBlockType, blockTypes)
+      ..put(SettingBoxKey.danmakuBlockType, blockTypes.toList())
       ..put(SettingBoxKey.danmakuShowArea, showArea)
       ..put(SettingBoxKey.danmakuOpacity, opacity)
       ..put(SettingBoxKey.danmakuFontScale, fontSize)