public SmcErr StopReceiveVideo(string cameraNo)
{
NLogEx.LoggerEx logEx = new NLogEx.LoggerEx(log);
logEx.Trace("Enter: IvsVideoMonitor.StopReceiveVideo({0}).", cameraNo);
SmcErr err = new CgwError();
//需要停止的预览句柄
int needToStopHandel = CgwConst.START_RECEIVE_VIDEO_DATA_FAILED;
if (this.handelOperateLock.TryEnterWriteLock(CgwConst.ENTER_LOCK_WAIT_TIME))
{
try
{
if (this.cameraVideoHandeDic.ContainsKey(cameraNo))
{
needToStopHandel = this.cameraVideoHandeDic[cameraNo];
this.videoHandleCameraDic.Remove(needToStopHandel);
this.cameraVideoHandeDic.Remove(cameraNo);
}
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 (needToStopHandel != CgwConst.START_RECEIVE_VIDEO_DATA_FAILED)
{
int result = this.ivsSdkClient.StopRealPlay(needToStopHandel);
//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.Ivs sdk error code:{0}", result);
return err;
}
logEx.Info("Stop Receive camera video data success.Camera No:{0},Handle:{1}.", cameraNo, needToStopHandel);
}
return err;
}