feat: 初步添加直播弹幕支持

pick from cf87904fc6 opt: live danmaku style
2025-12-06 09:13:48 +08:00 · 2024-08-29 18:00:42 +08:00
parent a119050944
commit 08e7e7b6e8
9 changed files with 510 additions and 3 deletions
--- a/lib/http/api.dart
+++ b/lib/http/api.dart
@@ -287,6 +287,10 @@ class Api {
  static const String liveRoomInfoH5 =
      '${HttpString.liveBaseUrl}/xlive/web-room/v1/index/getH5InfoByRoom';

+  //直播间弹幕密钥获取接口
+  static const String liveRoomDmToken =
+      '${HttpString.liveBaseUrl}/xlive/web-room/v1/index/getDanmuInfo';
+
  // 用户信息 需要Wbi签名
  // https://api.bilibili.com/x/space/wbi/acc/info?mid=503427686&token=&platform=web&web_location=1550101&w_rid=d709892496ce93e3d94d6d37c95bde91&wts=1689301482
  static const String memberInfo = '/x/space/wbi/acc/info';
--- a/lib/http/live.dart
+++ b/lib/http/live.dart
@@ -1,5 +1,5 @@
 import 'package:PiliPalaX/http/loading_state.dart';
-
+import 'package:PiliPalaX/models/live/danmu_info.dart';
 import '../models/live/item.dart';
 import '../models/live/room_info.dart';
 import '../models/live/room_info_h5.dart';
@@ -65,4 +65,19 @@ class LiveHttp {
      };
    }
  }
+
+  static Future liveRoomGetDanmakuToken({roomId}) async {
+    var res = await Request().get(Api.liveRoomDmToken, data: {
+      'id': roomId,
+    });
+    if (res.data['code'] == 0) {
+      return {'status': true, 'data': LiveDanmakuInfo.fromJson(res.data)};
+    } else {
+      return {
+        'status': false,
+        'data': [],
+        'msg': res.data['message'],
+      };
+    }
+  }
 }
--- a/lib/models/live/danmu_info.dart
+++ b/lib/models/live/danmu_info.dart
@@ -0,0 +1,75 @@
+import 'dart:developer';
+
+class LiveDanmakuInfo {
+  String message;
+  int ttl, code;
+  DanmakuInfoData data;
+  LiveDanmakuInfo(
+      {required this.code,
+      required this.message,
+      required this.ttl,
+      required this.data});
+
+  @override
+  String toString() {
+    return 'LiveDanmakuInfo{code: $code, message: $message, ttl: $ttl, data: $data}';
+  }
+
+  factory LiveDanmakuInfo.fromJson(dynamic json) {
+    List<HostInfo> hostList = [];
+    for (var host in json['data']['host_list']) {
+      hostList.add(HostInfo(
+          host: host['host'],
+          port: host['port'],
+          wssPort: host['wss_port'],
+          wsPort: host['ws_port']));
+    }
+    return LiveDanmakuInfo(
+        code: json['code'],
+        message: json['message'],
+        ttl: json['ttl'],
+        data: DanmakuInfoData(
+            group: json['data']['group'],
+            businessId: json['data']['business_id'],
+            ttl: json['data']['ttl'] ?? 0,
+            refreshRate: json['data']['refresh_rate'],
+            maxDelay: json['data']['max_delay'],
+            token: json['data']['token'],
+            hostList: hostList));
+  }
+}
+
+class DanmakuInfoData {
+  String group;
+  int businessId, ttl, refreshRate, maxDelay;
+  String token;
+  List<HostInfo> hostList;
+  DanmakuInfoData(
+      {required this.group,
+      required this.businessId,
+      required this.ttl,
+      required this.refreshRate,
+      required this.maxDelay,
+      required this.token,
+      required this.hostList});
+
+  @override
+  String toString() {
+    return 'DanmakuInfoData{group: $group, businessId: $businessId, ttl: $ttl, refreshRate: $refreshRate, maxDelay: $maxDelay, token: $token, hostList: $hostList}';
+  }
+}
+
+class HostInfo {
+  String host;
+  int port, wssPort, wsPort;
+  HostInfo(
+      {required this.host,
+      required this.port,
+      required this.wssPort,
+      required this.wsPort});
+
+  @override
+  String toString() {
+    return 'HostInfo{host: $host, port: $port, wssPort: $wssPort, wsPort: $wsPort}';
+  }
+}
--- a/lib/pages/live_room/view.dart
+++ b/lib/pages/live_room/view.dart
@@ -1,11 +1,13 @@
 import 'dart:io';

+import 'package:PiliPalaX/pages/live_room/widgets/chat.dart';
 import 'package:floating/floating.dart';
 import 'package:flutter/material.dart';
 import 'package:get/get.dart';
 import 'package:PiliPalaX/common/widgets/network_img_layer.dart';
 import 'package:PiliPalaX/plugin/pl_player/index.dart';

+import '../../utils/storage.dart';
 import 'controller.dart';
 import 'widgets/bottom_control.dart';

@@ -229,6 +231,15 @@ class _LiveRoomPageState extends State<LiveRoomPage> {
                  child: videoPlayerPanel,
                ),
              ),
+              Container(
+                  height: MediaQuery.of(context).orientation ==
+                          Orientation.landscape
+                      ? Get.size.height
+                      : Get.size.height - (Get.size.width * 9 / 16) - 100,
+                  color: const Color(0x10000000),
+                  width: Get.size.width,
+                  child: LiveRoomChat(
+                      roomId: int.parse(Get.parameters['roomid']!)))
            ],
          ),
        ],
--- a/lib/pages/live_room/widgets/chat.dart
+++ b/lib/pages/live_room/widgets/chat.dart
@@ -0,0 +1,121 @@
+import 'dart:convert';
+import 'dart:developer';
+
+import 'package:PiliPalaX/http/live.dart';
+import 'package:PiliPalaX/models/live/danmu_info.dart';
+import 'package:PiliPalaX/services/loggeer.dart';
+import 'package:PiliPalaX/tcp/live.dart';
+import 'package:flutter/material.dart';
+
+import '../../../utils/storage.dart';
+
+class LiveRoomChat extends StatefulWidget {
+  final int roomId;
+  const LiveRoomChat({super.key, required this.roomId});
+  @override
+  State<LiveRoomChat> createState() => _LiveRoomChatState();
+}
+
+class _LiveRoomChatState extends State<LiveRoomChat> {
+  String dm = "Danmaku Area";
+  final List<Widget> _items = [];
+  late LiveMessageStream msgStream;
+
+  @override
+  Widget build(BuildContext context) {
+    return ListView.builder(
+      itemCount: _items.length,
+      itemBuilder: (ctx, i) {
+        return _items[i];
+      },
+    ); //Center(child: Text(dm,style: const TextStyle(color: Colors.red),),);
+  }
+
+  @override
+  void initState() {
+    LiveHttp.liveRoomGetDanmakuToken(roomId: widget.roomId).then((v) {
+      if (v['status']) {
+        LiveDanmakuInfo info = v['data'];
+        // logger.d("info => $info");
+        msgStream = LiveMessageStream(
+            streamToken: info.data.token,
+            roomId: widget.roomId,
+            uid: GStorage.userInfo.get('userInfoCache').mid ?? 0,
+            host: info.data.hostList[0].host,
+            port: info.data.hostList[0].port);
+        msgStream.addEventListener((obj) {
+          if (obj['cmd'] == 'DANMU_MSG') {
+            // logger.i(' 原始弹幕消息 ======> ${jsonEncode(obj)}');
+            setState(() {
+              var widget = Container(
+                decoration: const BoxDecoration(
+                    borderRadius: BorderRadius.all(Radius.circular(100))),
+                child: ListTile(
+                  dense: true,
+                  leading: obj['info'][0][15]['user']['medal'] != null
+                      ? IntrinsicWidth(
+                          child: Container(
+                            // width: 70,
+                            height: 20,
+                            padding: const EdgeInsets.symmetric(
+                              horizontal: 5,
+                            ),
+                            color: Color((0xff000000 +
+                                obj['info'][0][15]['user']['medal']
+                                    ['color']) as int),
+                            child: Center(
+                              child: Text(
+                                '${obj['info'][0][15]['user']['medal']['name']} '
+                                'lv${obj['info'][0][15]['user']['medal']['level']}',
+                                style:
+                                    const TextStyle(color: Color(0xffdddddd)),
+                              ),
+                            ),
+                          ),
+                        )
+                      : null,
+                  style: ListTileStyle.list,
+                  title: Text.rich(
+                    TextSpan(
+                      children: [
+                        TextSpan(
+                          text:
+                              '${obj['info'][0][15]['user']['base']['name']}: ',
+                          style: const TextStyle(
+                            color: Color(0xFFAAAAAA),
+                            fontSize: 14,
+                          ),
+                        ),
+                        TextSpan(
+                          text: obj['info'][1],
+                          style: const TextStyle(
+                            color: Color(0xFFFFFFFF),
+                            fontSize: 14,
+                          ),
+                        ),
+                      ],
+                    ),
+                  ),
+                ),
+              );
+              _items.add(widget);
+              if (_items.length >= 20) {
+                _items.removeAt(0);
+              }
+            });
+          }
+        });
+        msgStream.init();
+      }
+    });
+    super.initState();
+  }
+
+  @override
+  void dispose() {
+    msgStream.close();
+    super.dispose();
+  }
+}
+
+final PiliLogger logger = getLogger();
--- a/lib/router/app_pages.dart
+++ b/lib/router/app_pages.dart
@@ -200,8 +200,8 @@ class CustomGetPage extends GetPage<dynamic> {
    this.fullscreen,
    super.transitionDuration,
  }) : super(
-          curve: Curves.linear,
-          transition: Transition.native,
+          curve: Curves.easeInOut,
+          transition: Transition.rightToLeft,
          showCupertinoParallax: false,
          popGesture: false,
          fullscreenDialog: fullscreen != null && fullscreen,
--- a/lib/tcp/live.dart
+++ b/lib/tcp/live.dart
@@ -0,0 +1,270 @@
+import 'dart:convert';
+import 'dart:io';
+import 'dart:typed_data';
+
+import 'package:PiliPalaX/services/loggeer.dart';
+import 'package:brotli/brotli.dart';
+
+class PackageHeader {
+  int totalSize;
+  int headerSize;
+  int protocolVer;
+  int operationCode;
+  int seq;
+
+  @override
+  String toString() {
+    return 'PackageHeader{totalSize: $totalSize, headerSize: $headerSize, protocolVer: $protocolVer, operationCode: $operationCode, seq: $seq}';
+  }
+
+  PackageHeader({
+    required this.totalSize,
+    required this.headerSize,
+    required this.protocolVer,
+    required this.operationCode,
+    required this.seq,
+  });
+
+  Uint8List toBytes() {
+    final buffer = BytesBuilder();
+    buffer.add(_int32ToBytes(totalSize));
+    buffer.add(_int16ToBytes(headerSize));
+    buffer.add(_int16ToBytes(protocolVer));
+    buffer.add(_int32ToBytes(operationCode));
+    buffer.add(_int32ToBytes(seq));
+    return buffer.toBytes();
+  }
+
+  List<int> _int32ToBytes(int value) {
+    final bytes = ByteData(4);
+    bytes.setInt32(0, value, Endian.big);
+    return bytes.buffer.asUint8List();
+  }
+
+  List<int> _int16ToBytes(int value) {
+    final bytes = ByteData(2);
+    bytes.setInt16(0, value, Endian.big);
+    return bytes.buffer.asUint8List();
+  }
+
+  static PackageHeader fromBytesData(Uint8List data) {
+    if (data.length < 10) {
+      throw Exception("数据不足以解析PackageHeader");
+    }
+    final byteData = ByteData.sublistView(data);
+
+    int totalSize = byteData.getUint32(0, Endian.big);
+    int headerSize = byteData.getUint16(4, Endian.big);
+    int protocolVer = byteData.getUint16(6, Endian.big);
+    int operationCode = byteData.getUint32(8, Endian.big);
+    int seq = byteData.getUint32(12, Endian.big);
+
+    return PackageHeader(
+      totalSize: totalSize,
+      headerSize: headerSize,
+      protocolVer: protocolVer,
+      operationCode: operationCode,
+      seq: seq,
+    );
+  }
+}
+
+abstract class Message {
+  String toJsonStr();
+  int getMessageSize();
+}
+
+class AuthMessage implements Message {
+  int roomid;
+  int uid;
+  int protover;
+  String platform;
+  int type;
+  String key;
+
+  AuthMessage({
+    required this.roomid,
+    required this.uid,
+    required this.protover,
+    required this.platform,
+    required this.type,
+    required this.key,
+  });
+
+  @override
+  String toJsonStr() {
+    final message = {
+      'roomid': roomid,
+      'uid': uid,
+      'protover': protover,
+      'platform': platform,
+      'type': type,
+      'key': key,
+    };
+    return jsonEncode(message);
+  }
+
+  @override
+  int getMessageSize() {
+    return utf8.encode(toJsonStr()).length;
+  }
+}
+
+abstract class AbstractPackage<T> {
+  PackageHeader header;
+  T body;
+  Uint8List marshal();
+  AbstractPackage({required this.header, required this.body});
+}
+
+//认证包
+class AuthPackage extends AbstractPackage<Message> {
+  AuthPackage({required super.header, required super.body});
+
+  @override
+  Uint8List marshal() {
+    int size = body.getMessageSize();
+    header.headerSize = 0x10; // 固定大小
+    size += header.headerSize;
+    header.totalSize = size;
+    final buffer = BytesBuilder();
+    buffer.add(header.toBytes());
+    buffer.add(utf8.encode(body.toJsonStr()));
+    return buffer.toBytes();
+  }
+}
+
+//心跳包
+class HeartbeatPackage extends AbstractPackage<dynamic> {
+  HeartbeatPackage({required super.header, super.body});
+
+  @override
+  Uint8List marshal() {
+    final buffer = BytesBuilder();
+    header.headerSize = 0x10;
+    header.totalSize = 0x10;
+    buffer.add(header.toBytes());
+    return buffer.toBytes();
+  }
+}
+
+class LiveMessageStream {
+  String streamToken, host;
+  int roomId, uid, port;
+  List<void Function(dynamic obj)> eventListeners = [];
+  LiveMessageStream(
+      {required this.streamToken,
+      required this.roomId,
+      required this.uid,
+      required this.host,
+      required this.port});
+  late Socket socket;
+  bool heartBeat = true;
+  PiliLogger logger = getLogger();
+  final String logTag = "LiveStreamService";
+
+  void init() async {
+    final authPackage = AuthPackage(
+      header: PackageHeader(
+        totalSize: 0,
+        headerSize: 0,
+        protocolVer: 1,
+        operationCode: 7,
+        seq: 1,
+      ),
+      body: AuthMessage(
+        roomid: roomId,
+        uid: uid,
+        protover: 3,
+        platform: 'web',
+        type: 2,
+        key: streamToken,
+      ),
+    );
+
+    final marshaledData = authPackage.marshal();
+    logger.d(marshaledData);
+
+    try {
+      socket = await Socket.connect(host, port);
+      logger.d('$logTag ===> TCP连接建立');
+      socket.add(authPackage.marshal());
+      logger.d('$logTag ===> 发送认证包');
+      await for (var data in socket) {
+        PackageHeader header = PackageHeader.fromBytesData(data);
+        List<int> decompressedData = [];
+        //心跳包回复不用处理
+        if (header.operationCode == 3) continue;
+        if (header.operationCode == 8) {
+          _heartBeat();
+        }
+        try {
+          switch (header.protocolVer) {
+            case 0:
+            case 1:
+              _processingData(data);
+              continue;
+            case 2:
+              decompressedData = ZLibDecoder().convert(data.sublist(0x10));
+              break;
+            case 3:
+              decompressedData =
+                  const BrotliDecoder().convert(data.sublist(0x10));
+            //print('Body: ${utf8.decode()}');
+          }
+          _processingData(decompressedData);
+        } catch (e) {
+          logger.w(e);
+        }
+      }
+      socket.close();
+    } catch (e) {
+      logger.e('$logTag ===> TCP连接失败: $e');
+    }
+  }
+
+  void _processingData(List<int> data) {
+    try {
+      var subHeader = PackageHeader.fromBytesData(Uint8List.fromList(data));
+      var msgBody =
+          utf8.decode(data.sublist(subHeader.headerSize, subHeader.totalSize));
+      for (var f in eventListeners) {
+        f(jsonDecode(msgBody));
+      }
+      if (subHeader.totalSize < data.length) {
+        _processingData(data.sublist(subHeader.totalSize));
+      }
+    } catch (e) {
+      logger.e('ParseHeader错误: $e');
+    }
+  }
+
+  void _heartBeat() async {
+    logger.i("$logTag 直播间信息流认证成功");
+    int heartBeatCount = 1;
+    while (heartBeat) {
+      await Future.delayed(const Duration(seconds: 30));
+      //发送心跳包
+      var package = HeartbeatPackage(
+          header: PackageHeader(
+              totalSize: 0,
+              headerSize: 0,
+              protocolVer: 1,
+              operationCode: 2,
+              seq: heartBeatCount));
+      try {
+        socket.add(package.marshal());
+      } catch (_) {}
+      heartBeatCount++;
+    }
+  }
+
+  void addEventListener(void Function(dynamic) func) {
+    eventListeners.add(func);
+  }
+
+  void close() {
+    socket.close();
+    heartBeat = false;
+  }
+}
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -151,6 +151,14 @@ packages:
      url: "https://pub.dev"
    source: hosted
    version: "2.1.1"
+  brotli:
+    dependency: "direct main"
+    description:
+      name: brotli
+      sha256: "7f891558ed779aab2bed874f0a36b8123f9ff3f19cf6efbee89e18ed294945ae"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.6.0"
  build:
    dependency: transitive
    description:
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -167,6 +167,9 @@ dependencies:
  flutter_svg: ^2.0.10+1
  image_cropper: ^8.0.2

+  #解压直播消息
+  brotli: ^0.6.0
+
 dependency_overrides:
  screen_brightness: ^2.0.0+2
  path: 1.9.1