/// <summary>
/// 抓图并获取数据
/// </summary>
/// <param name="vodHandle">点播标示句柄</param>
/// <returns>图片</returns>
public System.Drawing.Image GrabPicture(Int32 vodHandle)
{
MyLog4Net.ILogExtension.DebugWithDebugView(MyLog4Net.Container.Instance.Log, string.Format("IVXSDKProtocol VdaSdk_GrabPictureData vodHandle:{0}"
, vodHandle
));
uint pictype = (uint)E_VDA_GRAB_PIC_TYPE.E_GRAB_PIC_BMP;
uint buflen = 10 * 1024 * 1024;
IntPtr picbuf = Marshal.AllocHGlobal((int)buflen);
uint picdatalen = 0;
bool retVal = IVXSDKProtocol.VdaSdk_GrabPictureData(vodHandle, pictype, picbuf, buflen, out picdatalen);
if (!retVal)
{
// 调用失败，抛异常
CheckError();
}
System.Drawing.Image img = ModelParser.GetImage(picbuf, (int)picdatalen);
MyLog4Net.ILogExtension.DebugWithDebugView(MyLog4Net.Container.Instance.Log, string.Format("IVXSDKProtocol VdaSdk_GrabPictureData ret:{0},picdatalen:{1}"
, retVal
, picdatalen
));
if (picbuf != IntPtr.Zero)
{
Marshal.FreeHGlobal(picbuf);
}
return(img);
}
