/// <summary>
/// 开启视频，,已经打开则关闭重新开启
/// </summary>
/// <param name="channel">视频通道号</param>
/// <param name="hdlpreview">预览控件句柄</param>
/// <returns>成功返回true,失败返回false</returns>
public bool StartChannel(int channel, Panel hdlpreview)
{
bool success = true;
int hdl = channel;
if (!this.channelHandle.ContainsKey(channel))
{
return(false);
}
switch (this.VideoType)
{
case VideoType.MvAPI:
return(this.OpenChannel(this.channelHandle[channel], hdlpreview.Handle));
case VideoType.Sa7134Capture:
try
{
success = Sa7134Capture.VCAStartVideoPreview(this.channelHandle[channel]);
}
catch (Exception ex)
{
success = false;
}
break;
}
return(success);
}
/// <summary>
/// 打开视频通道,已经打开则关闭后重新打开
/// </summary>
/// <param name="channel">视频通道号</param>
/// <param name="hdlpreview">预览控件句柄</param>
/// <returns>成功返回true,失败返回false</returns>
public bool OpenChannel(int channel, Panel hdlpreview)
{
bool success = true;
int hdl = channel;
if (this.channelHandle.ContainsKey(channel))
{
this.CloseChannel(channel);
}
switch (this.VideoType)
{
case VideoType.MvAPI:
try
{
hdl = MvAPI.MV_OpenDevice((uint)channel, false);
}
catch (Exception ex)
{
hdl = 0;
}
if (hdl < 1)
{
return(false);
}
try
{
success = MvAPI.MV_SetDeviceParameter(hdl, (int)MV_PARAMTER.DISP_WHND, (uint)hdlpreview.Handle);
success = success && MvAPI.MV_SetDeviceParameter(hdl, hdlpreview.Width, 336);
success = success && MvAPI.MV_SetDeviceParameter(hdl, hdlpreview.Height, 256);
success = success && 1 == MvAPI.MV_OperateDevice(hdl, (int)RUNOPER.MVRUN);
}
catch (Exception ex)
{
success = false;
}
break;
case VideoType.Sa7134Capture:
try
{
success = Sa7134Capture.VCAOpenDevice(channel, hdlpreview.Handle);
success = success && Sa7134Capture.VCAStartVideoPreview(channel);
}
catch (Exception ex)
{
success = false;
}
break;
}
if (success)
{
this.channelHandle.Add(channel, hdl);
}
return(success);
}