feat: 简单实现弹幕功能

lib/http/danmaku.dart

@@ -0,0 +1,33 @@
+import 'package:dio/dio.dart';
+import 'package:flutter/foundation.dart';
+import 'package:pilipala/http/index.dart';
+import 'package:pilipala/models/danmaku/dm.pb.dart';
+
+import 'constants.dart';
+
+class DanmakaHttp {
+  // 获取视频弹幕
+  static Future queryDanmaku({
+    required int cid,
+    required int segmentIndex,
+  }) async {
+    // 构建参数对象
+    Map<String, int> params = {
+      'type': 1,
+      'oid': cid,
+      'segment_index': segmentIndex,
+    };
+
+    // 计算函数
+    Future<DmSegMobileReply> computeTask(Map<String, int> params) async {
+      var response = await Request().get(
+        Api.webDanmaku,
+        data: params,
+        extra: {'resType': ResponseType.bytes},
+      );
+      return DmSegMobileReply.fromBuffer(response.data);
+    }
+
+    return await compute(computeTask, params);
+  }
+}