private void timerProgress_Tick(object sender, EventArgs e)
{
DownloadProgressBar.Maximum = 100;
DownloadProgressBar.Minimum = 0;
int iPos = 0;
//获取下载进度
iPos = CHCNetSDK.NET_DVR_GetDownloadPos(m_lDownHandle);
if ((iPos > DownloadProgressBar.Minimum) && (iPos < DownloadProgressBar.Maximum))
{
DownloadProgressBar.Value = iPos;
}
if (iPos == 100) //下载完成
{
DownloadProgressBar.Value = iPos;
if (!CHCNetSDK.NET_DVR_StopGetFile(m_lDownHandle))
{
iLastErr = CHCNetSDK.NET_DVR_GetLastError();
str = "NET_DVR_StopGetFile failed, error code= " + iLastErr; //下载控制失败，输出错误号
MessageBox.Show(str);
return;
}
m_lDownHandle = -1;
timerDownload.Stop();
}
if (iPos == 200) //网络异常，下载失败
{
MessageBox.Show("The downloading is abnormal for the abnormal network!");
timerDownload.Stop();
}
}
public int GetDownloadPos()
{
LastRunTime = DateTime.Now.Ticks / 10000;
if (_downloadprogress == 100)
{
if (!_finsh)
{
_finsh = true;
Console.WriteLine(this._download + "完成" + "." + CHCNetSDK.NET_DVR_GetLastError());
while (!CHCNetSDK.NET_DVR_StopGetFile(this._download))
{
Console.WriteLine("停止下载");
_log.Info("停止下载");
Thread.Sleep(100);
}
GC.Collect();
}
return(_downloadprogress);
}
else
{
_downloadprogress = CHCNetSDK.NET_DVR_GetDownloadPos(this._download);
}
return(_downloadprogress);
}
private async Task <Boolean> DownloadRecording(Recording recording)
{
if (_mLDownHandle >= 0)
{
Console.WriteLine("Error, already downloading!");
return(false);
}
var sVideoFileName = _outputLocationPath + recording.GetFileName() + _videoExtension;
Console.WriteLine("Downloading: " + recording.GetFileName());
// Download from nvr/camera by file name
_mLDownHandle = CHCNetSDK.NET_DVR_GetFileByName(_mLUserId, recording.GetFileName(),
sVideoFileName);
if (_mLDownHandle < 0)
{
_iLastErr = CHCNetSDK.NET_DVR_GetLastError();
_errorMsg = "NET_DVR_GetFileByName failed, error code= " + _iLastErr;
Console.WriteLine(_errorMsg);
if (_iLastErr == 34) // Target folder does not exist, create it
{
System.IO.Directory.CreateDirectory(_outputLocationPath);
}
return(false);
}
uint iOutValue = 0;
if (!CHCNetSDK.NET_DVR_PlayBackControl_V40(_mLDownHandle, CHCNetSDK.NET_DVR_PLAYSTART,
IntPtr.Zero, 0, IntPtr.Zero, ref iOutValue))
{
_iLastErr = CHCNetSDK.NET_DVR_GetLastError();
_errorMsg = "NET_DVR_PLAY_START failed, error code= " +
_iLastErr; // Download controlling failed, print error code
Console.WriteLine(_errorMsg);
return(false);
}
var downloadProgress = 0;
while (downloadProgress < 100)
{
// Get downloading process
downloadProgress = CHCNetSDK.NET_DVR_GetDownloadPos(_mLDownHandle);
Thread.Sleep(1 * 1000);
Console.WriteLine("Download progress: " + downloadProgress + "%");
}
_mLDownHandle = -1;
return(true);
}
public int GetDownloadProgress()
{
int iPos = 0;
if ((iPos = CHCNetSDK.NET_DVR_GetDownloadPos(DownloadHandle)) < 0)
{
var iLastErr = NET_DVR_GetLastError();
throw new Exception("NET_DVR_GetDownloadPos failed, error code= " + iLastErr);
}
return(iPos);
}
public async Task <OResult <Boolean> > DownloadByTimeAsync(DownloadFileByTimeRequest request, CancellationToken cancellationToken = default)
{
try
{
var now = DateTime.Now;
if (request.From > now)
{
request.From = now;
}
if (request.To > now)
{
request.To = now;
}
if (request.From > request.To)
{
request.To = DateTime.Now;
}
CHCNetSDK.NET_DVR_PLAYCOND struDownPara = new CHCNetSDK.NET_DVR_PLAYCOND();
struDownPara.dwChannel = (UInt32)_loginRequest.ChannelNo;
//设置下载的开始时间
struDownPara.struStartTime.dwYear = (UInt32)request.From.Year;
struDownPara.struStartTime.dwMonth = (UInt32)request.From.Month;
struDownPara.struStartTime.dwDay = (UInt32)request.From.Day;
struDownPara.struStartTime.dwHour = (UInt32)request.From.Hour;
struDownPara.struStartTime.dwMinute = (UInt32)request.From.Minute;
struDownPara.struStartTime.dwSecond = (UInt32)request.From.Second;
//设置下载的结束时间
struDownPara.struStopTime.dwYear = (UInt32)request.To.Year;
struDownPara.struStopTime.dwMonth = (UInt32)request.To.Month;
struDownPara.struStopTime.dwDay = (UInt32)request.To.Day;
struDownPara.struStopTime.dwHour = (UInt32)request.To.Hour;
struDownPara.struStopTime.dwMinute = (UInt32)request.To.Minute;
struDownPara.struStopTime.dwSecond = (UInt32)request.To.Second;
var m_lDownHandle = CHCNetSDK.NET_DVR_GetFileByTime_V40(_userId, request.FilePath, ref struDownPara);
if (m_lDownHandle < 0)
{
return(new OResult <Boolean>(false, HkvsErrorCode.GetLastErrorCode(), $"按时间下载失败：{HkvsErrorCode.GetLastErrorMessage()}"));
}
UInt32 iOutValue = 0;
var succ = CHCNetSDK.NET_DVR_PlayBackControl_V40(m_lDownHandle, CHCNetSDK.NET_DVR_PLAYSTART, IntPtr.Zero, 0, IntPtr.Zero, ref iOutValue);
if (!succ)
{
return(new OResult <Boolean>(false, HkvsErrorCode.GetLastErrorCode(), $"按时间下载失败：{HkvsErrorCode.GetLastErrorMessage()}"));
}
var tcs = new TaskCompletionSource <Boolean>();
_ = Task.Run(async() =>
{
var iPos = 0;
while (!cancellationToken.IsCancellationRequested)
{
iPos = CHCNetSDK.NET_DVR_GetDownloadPos(m_lDownHandle);
switch (iPos)
{
case 100:
CHCNetSDK.NET_DVR_StopGetFile(m_lDownHandle);
tcs.SetResult(true);
return;
case 200:
tcs.SetException(new SystemException("网络中断"));
CHCNetSDK.NET_DVR_StopGetFile(m_lDownHandle);
return;
}
await Task.Delay(1000);
}
}, CancellationToken.None);
succ = await tcs.Task;
if (!succ)
{
return(new OResult <Boolean>(false, "按时间下载失败"));
}
return(new OResult <Boolean>(true));
}
catch (Exception ex)
{
return(new OResult <Boolean>(false, ex));
}
}
public int GetDownloadPosition(int downloadHandle)
{
int iPos = CHCNetSDK.NET_DVR_GetDownloadPos(downloadHandle);
return(iPos);
}