ADLINK Technology HDV62, User Manual

Page: 112 / 164

Programming Guide 101
5.3.2 Use COM interfaces
Use the methods of IAMVideoProcAmp interface of standard
DirectShow Interface to get or set the qualities of an incoming
video signal, such as contrast, saturation… etc. Other interfaces
please refer to DirectX SDK help and next section.
// pFilter points to an ADLINK HDV62 Video Capture
filter
IAMVideoProcAmp *pAmp;
HRESULT hr;
long contrast, flags;
hr = pFilter->QueryInterface(IID_IAMVideoProcAmp,
(void **)&pAmp);
if (SUCCEEDED(hr))
{
pAmp->Get(VideoProcAmp_Contrast, &contrast,
&flags);
pAmp->Release();
}