public System.Drawing.Image DIOSnapPictureEx(UInt64 dwStrmId)
{
MyLog4Net.ILogExtension.DebugWithDebugView(MyLog4Net.Container.Instance.Log, "IVXStreamIOSDKProtocol StrmGrabPictureData dwStrmId:" + dwStrmId);
int buflen = Common.MAX_PIC_DATA_LEN;
IntPtr picbuf = IntPtr.Zero;
int picdatalen = 0;
uint retVal = IVXStreamIOSDKProtocol.StrmGrabPictureData(dwStrmId, picbuf, out picdatalen, eSNAP_TYPE.SNAP_BMP);
if (picdatalen > buflen && picdatalen > 0)
{
if (picbuf != IntPtr.Zero)
{
Marshal.FreeHGlobal(picbuf);
}
buflen = picdatalen;
picbuf = Marshal.AllocHGlobal((int)buflen);
picdatalen = 0;
retVal = IVXStreamIOSDKProtocol.StrmGrabPictureData(dwStrmId, picbuf, out picdatalen, eSNAP_TYPE.SNAP_BMP);
}
if (retVal > 0)
{
DIO_GetError(retVal);
}
System.Drawing.Image img = null;//DataModel.Common.GetImage(picbuf, (int)buflen);
if (picbuf != IntPtr.Zero)
{
img = Common.GetImage(picbuf, (int)buflen);
Marshal.FreeHGlobal(picbuf);
}
MyLog4Net.ILogExtension.DebugWithDebugView(MyLog4Net.Container.Instance.Log, "IVXStreamIOSDKProtocol StrmGrabPictureData ret:" + 0);
return(img);
}
