flutter create brtc_flutter_demo

dependencies:
  flutter:
    sdk: flutter
    
  // 依赖的百度rtc flutter sdk，后续更新可修改版本号
  bdcloud_rtc: ^1.0.0

flutter pub get

    BRTCInitParams initParams = new BRTCInitParams();
    initParams.appId = appId;
    BaiduRtcCloud baiduRtcCloud = (await BaiduRtcCloud.getInstance(initParams))!;

    // 设置参数，默认，可修改
    BRTCCommonParam commonParam = BRTCCommonParam();
    commonParam.autoPublish = true;
    commonParam.autoSubscribe = true;
    commonParam.enableMultistream = true;
    commonParam.encodeBitrateMode = 1;
    commonParam.videoResolution = BdUtils.getResolutionConfig();
    commonParam.videoMaxkbps = BdUtils.getBitrateConfig();
    commonParam.videoMinkbps = BdUtils.getBitrateConfig();
    commonParam.videoFps = BdUtils.getFpsConfig();
    commonParam.connectionTimeoutMs = 5000;
    commonParam.readTimeoutMs = 5000;
    commonParam.inputAudioChannel = 1;
    commonParam.outputAudioChannel = 1;
    commonParam.audioFrequency = 48000;
    commonParam.enableJitterRetransmission = true;
    commonParam.enableFixedResolution = true;
    commonParam.videoWidth = 480;
    commonParam.videoHeight = 640;
    commonParam.isMultiPlayerModel = true;
    
    baiduRtcCloud.setParamSettings(commonParam);

  @override
  Widget build(BuildContext context) {
    final double distance = 12;
    List<String> remoteUidList = remoteUserIdMap.values.toList();
    subscriberCount = remoteUidList.length;
    return Stack(
      alignment: Alignment.topLeft,
      fit: StackFit.expand,
      children: [
        Positioned(
          top: 0,
          left: 0,
          child: Container(
            width: 1.sw,
            height: (4 / 3).sw,
            color: Colors.black,
            child: BRTCCloudVideoView(
              key: ValueKey("LocalView"),
              viewType: BRTCCloudConfig.BRTC_Video_SurfaceView_Channel,
              videoParam: BRTCVideoParams(
                x: 0,
                y: 0,
                width: 1.sw.toInt(),
                height: (4 / 3).sw.toInt(),
                isLocal: true,
              ),
              onViewCreated: (viewId) async {
                setState(() {
                  localViewId = viewId;
                });
                baiduRtcCloud.setLocalDisplay(viewId);
                baiduRtcCloud.startPreview();
              },
            ),
          ),
        ),
        Row(
          mainAxisAlignment: MainAxisAlignment.end,
          mainAxisSize: MainAxisSize.min,
          children: [
            Container(
              alignment: Alignment.topRight,
              color: Colors.transparent,
              width: (1 / 3).sw,
              child: GridView.builder(
                itemCount: subscriberCount,
                shrinkWrap: false,
                gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
                    crossAxisCount: 1,
                    mainAxisSpacing: 2.0,
                    crossAxisSpacing: 5.0,
                    childAspectRatio: 0.75),
                itemBuilder: (BuildContext context, int index) {
                  return Container(
                    child: BRTCCloudVideoView(
                      key: ValueKey('RemoteView_$index'),
                      viewType: BRTCCloudConfig.BRTC_Video_Remote_View_Channel,
                      videoParam: BRTCVideoParams(
                        x: 0,
                        y: 0,
                        width: (1 / 3).sw.toInt(),
                        height: (4 / 9).sw.toInt(),
                        isLocal: false,
                      ),
                      onViewCreated: (viewId) async {
                        String userId = index.toString();
                        if (remoteUidList.length > index) {
                          userId = remoteUidList[index];
                        }

                        if (remoteUserViewMap.containsKey(userId)) {
                          baiduRtcCloud.updateDisplay(
                              viewId, int.parse(userId));
                        } else {
                          baiduRtcCloud.setRemoteDisplayWithUserId(
                              viewId, int.parse(userId));
                          remoteUserViewMap[userId] = viewId;
                        }
                      },
                    ),
                  );
                },
              ),
            ),
          ],
        ),
      ],
    );
  }

    BRTCLoginParams loginParams = BRTCLoginParams();
    loginParams.userId = "999";
    loginParams.roomId = "roomName";
    loginParams.displayName = "UserName";
    baiduRtcCloud.loginBRtcRoom(loginParams);