//按时间获取录像文件，存储在本地
public IntPtr DownloadVideoFileByTime(IntPtr m_LoginID, int channelID, DateTime startTime, DateTime endTime, string FileName)
{
//set stream type 设置码流类型
EM_STREAM_TYPE streamType = EM_STREAM_TYPE.MAIN;
IntPtr pStream = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(int)));
Marshal.StructureToPtr((int)streamType, pStream, true);
NETClient.SetDeviceMode(m_LoginID, EM_USEDEV_MODE.RECORD_STREAM_TYPE, pStream);
//调用下载API
m_DownloadID = NETClient.DownloadByTime(m_LoginID, channelID, EM_QUERY_RECORD_TYPE.ALL, startTime, endTime, FileName, m_DownloadPosCallBack, IntPtr.Zero, null, IntPtr.Zero, IntPtr.Zero);
return(m_DownloadID);
}
/// <summary>
/// 查询指定时间录像文件,，返回文件数量
/// </summary>
/// <param name="m_LoginID"></param>
/// <param name="channelID"></param>
/// <param name="startTime"></param>
/// <param name="endTime"></param>
/// <param name="FileName"></param>
/// <returns></returns>
public int QueryRecordFile(IntPtr m_LoginID, int channelID, DateTime startTime, DateTime endTime)
{
NET_RECORDFILE_INFO[] infos = new NET_RECORDFILE_INFO[5000];
int fileCount = 0;//返回文件数量
//set stream type 设置码流类型
EM_STREAM_TYPE streamType = EM_STREAM_TYPE.AUTO;
IntPtr pStream = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(int)));
Marshal.StructureToPtr((int)streamType, pStream, true);
NETClient.SetDeviceMode(m_LoginID, EM_USEDEV_MODE.RECORD_STREAM_TYPE, pStream);
//query record file 查询录像文件
bool ret = NETClient.QueryRecordFile(m_LoginID, channelID, EM_QUERY_RECORD_TYPE.ALL, startTime, endTime, null, ref infos, ref fileCount, m_WaitTime, false);
Thread.Sleep(500);
if (false == ret)
{
return(-1);//标示查询失败;
}
else
{
return(fileCount);
}
}
