public SmcErr StopReceiveVideo(string cameraNo)
{
NLogEx.LoggerEx logEx = new NLogEx.LoggerEx(log);
logEx.Trace("Enter: T28181VideoMonitor.StopReceiveVideo({0}).", cameraNo);
SmcErr err = new CgwError();
//需要停止的预览句柄
uint needToStopChannel = 0;
if (this.handelOperateLock.TryEnterWriteLock(CgwConst.ENTER_LOCK_WAIT_TIME))
{
try
{
if (this.cameraVideoChannelDic.ContainsKey(cameraNo))
{
needToStopChannel = this.cameraVideoChannelDic[cameraNo];
this.videoChannelDataSenderDic.Remove(needToStopChannel);
this.cameraVideoChannelDic.Remove(cameraNo);
//关闭rtp回调
rtpAdapter.ESDK_RTP_CloseChannel(needToStopChannel);
}
else
{
logEx.Warn("Stop Receive camera video data failed. Don't need to end the preview.Camera No:{0}.", cameraNo);
//如果预览句柄不存在，不需要处理，直接返回
return err;
}
}
catch (Exception ex)
{
err.SetErrorNo(CgwError.STOP_RECEIVE_VIDEO_FAILED);
logEx.Error("Stop Receive camera video data failed.Execption message:{0}", ex.Message);
return err;
}
finally
{
this.handelOperateLock.ExitWriteLock();
}
}
//调用sdk的停止方法，放在handelOperateLock外面，防止长时间占用锁
if (needToStopChannel != 0)
{
int result = sipStack.StopRecvStream(needToStopChannel);
//如果不为0，表示预览失败
if (result != CgwConst.IVS_SDK_SUCCESS_TAG)
{
err.SetErrorNo(CgwError.STOP_RECEIVE_VIDEO_FAILED);
logEx.Error("Stop Receive camera video data failed. error code:{0}", result);
return err;
}
logEx.Info("Stop Receive camera video data success.Camera No:{0},Handle:{1}.", cameraNo, needToStopChannel);
}
return err;
}