public int DownloadVideoRecordByTime(int userId, int channelNumber, DateTime beginTime, DateTime endTime, string fullPath)
{
CHCNetSDK.NET_DVR_PLAYCOND struDownPara = new CHCNetSDK.NET_DVR_PLAYCOND();
//通道号 Channel number
struDownPara.dwChannel = (uint)channelNumber;
//设置下载的开始时间 Set the starting time
struDownPara.struStartTime = beginTime.ToHCDeviceTime();
//设置下载的结束时间 Set the stopping time
struDownPara.struStopTime = endTime.ToHCDeviceTime();
//按时间下载 Download by time
int downloadId = CHCNetSDK.NET_DVR_GetFileByTime_V40(userId, fullPath, ref struDownPara);
if (downloadId < 0)
{
uint iLastErr = CHCNetSDK.NET_DVR_GetLastError();
string str = "NET_DVR_GetFileByTime_V40 failed, error code= " + iLastErr;
return(-1);
}
uint iOutValue = 0;
if (!CHCNetSDK.NET_DVR_PlayBackControl_V40(downloadId, CHCNetSDK.NET_DVR_PLAYSTART, IntPtr.Zero, 0, IntPtr.Zero, ref iOutValue))
{
uint iLastErr = CHCNetSDK.NET_DVR_GetLastError();
//下载控制失败，输出错误号
string str = "NET_DVR_PLAYSTART failed, error code= " + iLastErr;
return(-1);
}
return(downloadId);
}
private void btnDownloadTime_Click(object sender, EventArgs e)
{
if (m_lDownHandle >= 0)
{
MessageBox.Show("Downloading, please stop firstly!");//正在下载，请先停止下载
return;
}
CHCNetSDK.NET_DVR_PLAYCOND struDownPara = new CHCNetSDK.NET_DVR_PLAYCOND();
struDownPara.dwChannel = (uint)iChannelNum[(int)iSelIndex]; //通道号 Channel number
//设置下载的开始时间 Set the starting time
struDownPara.struStartTime.dwYear = (uint)dateTimeStart.Value.Year;
struDownPara.struStartTime.dwMonth = (uint)dateTimeStart.Value.Month;
struDownPara.struStartTime.dwDay = (uint)dateTimeStart.Value.Day;
struDownPara.struStartTime.dwHour = (uint)dateTimeStart.Value.Hour;
struDownPara.struStartTime.dwMinute = (uint)dateTimeStart.Value.Minute;
struDownPara.struStartTime.dwSecond = (uint)dateTimeStart.Value.Second;
//设置下载的结束时间 Set the stopping time
struDownPara.struStopTime.dwYear = (uint)dateTimeEnd.Value.Year;
struDownPara.struStopTime.dwMonth = (uint)dateTimeEnd.Value.Month;
struDownPara.struStopTime.dwDay = (uint)dateTimeEnd.Value.Day;
struDownPara.struStopTime.dwHour = (uint)dateTimeEnd.Value.Hour;
struDownPara.struStopTime.dwMinute = (uint)dateTimeEnd.Value.Minute;
struDownPara.struStopTime.dwSecond = (uint)dateTimeEnd.Value.Second;
string sVideoFileName; //录像文件保存路径和文件名 the path and file name to save
sVideoFileName = "D:\\Downtest_Channel" + struDownPara.dwChannel + ".mp4";
//按时间下载 Download by time
m_lDownHandle = CHCNetSDK.NET_DVR_GetFileByTime_V40(m_lUserID, sVideoFileName, ref struDownPara);
if (m_lDownHandle < 0)
{
iLastErr = CHCNetSDK.NET_DVR_GetLastError();
str = "NET_DVR_GetFileByTime_V40 failed, error code= " + iLastErr;
MessageBox.Show(str);
return;
}
uint iOutValue = 0;
if (!CHCNetSDK.NET_DVR_PlayBackControl_V40(m_lDownHandle, CHCNetSDK.NET_DVR_PLAYSTART, IntPtr.Zero, 0, IntPtr.Zero, ref iOutValue))
{
iLastErr = CHCNetSDK.NET_DVR_GetLastError();
str = "NET_DVR_PLAYSTART failed, error code= " + iLastErr; //下载控制失败，输出错误号
MessageBox.Show(str);
return;
}
timerDownload.Interval = 1000;
timerDownload.Enabled = true;
btnStopDownload.Enabled = true;
}
public void DownloadTime(object req)
{
LastRunTime = DateTime.Now.Ticks / 10000;
_obj = req;
_finsh = false;
RunParam parm = (RunParam)req;
Channel request = parm.Channel;
_channel = request;
int userId = request.UserId; int index = request.Index; DateTime start = request.StartTime; DateTime end = request.EndTime;
// Console.WriteLine("下载" + userId + "." + index);
_userId = userId;
CHCNetSDK.NET_DVR_PLAYCOND struDownPara = new CHCNetSDK.NET_DVR_PLAYCOND();
struDownPara.dwChannel = (uint)index;
//设置下载的开始时间 Set the starting time
struDownPara.struStartTime.dwYear = (uint)start.Year;
struDownPara.struStartTime.dwMonth = (uint)start.Month;
struDownPara.struStartTime.dwDay = (uint)start.Day;
struDownPara.struStartTime.dwHour = (uint)start.Hour;
struDownPara.struStartTime.dwMinute = (uint)start.Minute;
struDownPara.struStartTime.dwSecond = (uint)start.Second;
//设置下载的结束时间 Set the stopping time
struDownPara.struStopTime.dwYear = (uint)end.Year;
struDownPara.struStopTime.dwMonth = (uint)end.Month;
struDownPara.struStopTime.dwDay = (uint)end.Day;
struDownPara.struStopTime.dwHour = (uint)end.Hour;
struDownPara.struStopTime.dwMinute = (uint)end.Minute;
struDownPara.struStopTime.dwSecond = (uint)end.Second;
string sVideoFileName; //录像文件保存路径和文件名 the path and file name to save
sVideoFileName = parm.SavePath + "\\" + parm.FileName + "." + request.No + ".mp4";
_log.Error(sVideoFileName);
if (File.Exists(sVideoFileName))
{
_log.Info(sVideoFileName + "文件已存在");
_downloadprogress = 100;
_finsh = true;
}
else
{
//按时间下载 Download by time
this._download = CHCNetSDK.NET_DVR_GetFileByTime_V40(userId, sVideoFileName, ref struDownPara);
int t = 0;
while (this._download < 0 && t < 10)
{
Console.WriteLine(_channel.ChannelIp + "." + _download + "：重试" + CHCNetSDK.NET_DVR_GetLastError());
_log.Info(_channel.ChannelIp + "." + _download + "：重试" + CHCNetSDK.NET_DVR_GetLastError());
_download = CHCNetSDK.NET_DVR_GetFileByTime_V40(userId, sVideoFileName, ref struDownPara);
t++;
Thread.Sleep(300);
}
uint iOutValue = 0;
if (!CHCNetSDK.NET_DVR_PlayBackControl_V40(_download, CHCNetSDK.NET_DVR_PLAYSTART, IntPtr.Zero, 0, IntPtr.Zero, ref iOutValue))
{
_log.Info(_download + "." + CHCNetSDK.NET_DVR_GetLastError());
Console.WriteLine(CHCNetSDK.NET_DVR_GetLastError());
}
}
}
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));
}
}