CgwMonitorManage.eLTE.eLTEVideoMonitor.StartRecvStream C# (CSharp) Method

        private UInt32 StartRecvStream(string cameraCode, string pRemoteSendStreamIp, uint uiRemoteSendStreamVideoPort, uint uiRemoteSendStreamAudioPort, uint uiLocalVideoPort, uint uiLocalAudioPort)
        {
            NLogEx.LoggerEx logEx = new NLogEx.LoggerEx(log);
            logEx.Trace("Enter: eLTEVideoMonitor.StartRecvStream  cameraCode :{0},pRemoteSendStreamIp:{1},uiRemoteSendStreamVideoPort:{2},uiRemoteSendStreamAudioPort:{3},uiLocalVideoPort = {4},uiLocalAudioPort ={5}",
                          cameraCode, pRemoteSendStreamIp, uiRemoteSendStreamVideoPort, uiRemoteSendStreamAudioPort, uiLocalVideoPort, uiLocalAudioPort);

            //用户参数,4字节整数
            IntPtr pUser = Marshal.AllocHGlobal(4);
            try
            {
                //接收视频码流RTP端口号
                uint uiLocalRecvStreamVideoRtpPort = uiLocalVideoPort;
                //接收音频码流RTP端口号
                uint uiLocalRecvStreamAudioRtpPort = uiLocalAudioPort;

                //通道号
                UInt32 uiChannel = 0;
                //string strLocal = GetLocalIP(ip, iPort, ilocalPort);

                if (string.IsNullOrEmpty(localIP))
                {
                    localIP = GetLocalIP(ip, iPort, ilocalPort);
                }

                //获取可用通道
                IVS_NETSOURCE_RESULT iRet = NetSourcedInterface.IVS_NETSOURCE_GetChannel(ref uiChannel);
                if (iRet != IVS_NETSOURCE_RESULT.SUCCESS)
                {
                    logEx.Error("eLTEVideoMonitor.IVS_NETSOURCE_GetChannel failed. cameraCode :{0}", cameraCode);
                    return CgwConst.T28181_ERROR_HANDLE;
                }

                Marshal.Copy(new int[1] { Convert.ToInt32(uiChannel) }, 0, pUser, 1);

                //设置媒体流回调函数
                NetSourcedInterface.IVS_NETSOURCE_SetDataCallBack(uiChannel, realPlayCallback, pUser);
                //异常回调函数
                NetSourcedInterface.IVS_NETSOURCE_SetExceptionCallBack(netExceptionCallBack, pUser);


                //协议类型 UDP
                iRet = NetSourcedInterface.IVS_NETSOURCE_SetProtocolType(uiChannel, 1);
                if (iRet != IVS_NETSOURCE_RESULT.SUCCESS)
                {
                    logEx.Error("eLTEVideoMonitor.IVS_NETSOURCE_SetProtocolType failed. cameraCode :{0}", cameraCode);
                    Marshal.FreeHGlobal(pUser);
                    return CgwConst.T28181_ERROR_HANDLE;
                }

                iRet = NetSourcedInterface.IVS_NETSOURCE_SetLocalRecvStreamIP(uiChannel, localIP);
                if (iRet != IVS_NETSOURCE_RESULT.SUCCESS)
                {
                    logEx.Error("eLTEVideoMonitor.IVS_NETSOURCE_SetLocalRecvStreamIP failed. cameraCode :{0}", cameraCode);
                    Marshal.FreeHGlobal(pUser);
                    return CgwConst.T28181_ERROR_HANDLE;
                }

                iRet = NetSourcedInterface.IVS_NETSOURCE_SetLocalRecvStreamPort(uiChannel, uiLocalRecvStreamVideoRtpPort, uiLocalRecvStreamAudioRtpPort);
                if (iRet != IVS_NETSOURCE_RESULT.SUCCESS)
                {
                    logEx.Error("eLTEVideoMonitor.IVS_NETSOURCE_GetLocalRecvStreamPort failed. cameraCode :{0}", cameraCode);
                    Marshal.FreeHGlobal(pUser);
                    return CgwConst.T28181_ERROR_HANDLE;
                }

                iRet = NetSourcedInterface.IVS_NETSOURCE_OpenNetStream(uiChannel, pRemoteSendStreamIp, uiRemoteSendStreamVideoPort, uiRemoteSendStreamAudioPort);
                if (iRet != IVS_NETSOURCE_RESULT.SUCCESS)
                {
                    logEx.Error("eLTEVideoMonitor.IVS_NETSOURCE_OpenNetStream failed. cameraCode :{0}", cameraCode);
                    Marshal.FreeHGlobal(pUser);
                    return CgwConst.T28181_ERROR_HANDLE;
                }

                iRet = NetSourcedInterface.IVS_NETSOURCE_StartRecvStream(uiChannel);
                if (iRet == IVS_NETSOURCE_RESULT.SUCCESS)
                {
                    channelInPtrDic.Add(uiChannel, pUser);
                    logEx.Info("eLTEVideoMonitor.IVS_NETSOURCE_StartRecvStream pChannel: {0}, cameraCode :{1} ", uiChannel, cameraCode);
                    return uiChannel;
                }
                else
                {
                    logEx.Error("eLTEVideoMonitor.StartRecvStream failed. cameraCode :{0}", cameraCode);
                    this.lteSdkClient.StopP2PVideo(Convert.ToInt32(cameraCode));
                    Marshal.FreeHGlobal(pUser);
                    return CgwConst.T28181_ERROR_HANDLE;
                }
            }
            catch (System.Exception ex)
            {
                logEx.Error("StartRecvStream failed.Exception message:{0},cameraCode :{0}", ex.Message, cameraCode);
                Marshal.FreeHGlobal(pUser);
                return CgwConst.T28181_ERROR_HANDLE;
            }
        }