private IEnumPins GetTestEnum()
{
IBaseFilter filter = new SmartTee() as IBaseFilter;
int hr;
IEnumPins ppEnum;
hr = filter.EnumPins(out ppEnum);
DsError.ThrowExceptionForHR(hr);
return(ppEnum);
}
private static IPin GetSmartTeeInputPin()
{
IBaseFilter filter = new SmartTee() as IBaseFilter;
int hr;
IntPtr ip = Marshal.AllocCoTaskMem(4);
IEnumPins ppEnum;
IPin pRet = null;
IPin[] pPins = new IPin[1];
hr = filter.EnumPins(out ppEnum);
Marshal.ThrowExceptionForHR(hr);
while ((ppEnum.Next(1, pPins, ip) >= 0) && (Marshal.ReadInt32(ip) == 1))
{
pRet = pPins[0];
break;
}
Marshal.FreeCoTaskMem(ip);
Marshal.ReleaseComObject(ppEnum);
return(pRet);
}