프레임 정보(수,크기) 조절하기

// !!! What if this interface isnt supported?
// we use this interface to set the frame rate and get the capture size


if (hr != NOERROR)
{
        hr = m_pCapBuilder->FindInterface(&PIN_CATEGORY_CAPTURE,&MEDIATYPE_Video, m_pVCapFilter,
                IID_IAMStreamConfig, (void **)&m_pVStreamConfig);
        if (hr != NOERROR)
        {
                // this means we cant set frame
                rate (non-DV only)
                        ErrMsg("Error %x: Cannot find VCapture:IAMStreamConfig", hr);
                return hr;
        }
}

AM_MEDIA_TYPE *pmt;
// default capture format
if (m_pVStreamConfig && m_pVStreamConfig->GetFormat(&pmt) == S_OK)
{
        // DV capture does not use a VIDEOINFOHEADER
        if (pmt->formattype == FORMAT_VideoInfo)
        {
                VIDEOINFOHEADER *pvi = (VIDEOINFOHEADER *)pmt->pbFormat;
                
                if(pmt->subtype == MEDIASUBTYPE_RGB24)
                {
                        pmt->lSampleSize = (LONG)(_DEFAULT_CAP_WIDTH * _DEFAULT_CAP_HEIGHT * 3);    // sample size calc
                        pvi->bmiHeader.biSizeImage = pmt->lSampleSize;
                }
        /// 프레임 조절                
                pvi->AvgTimePerFrame = (LONGLONG)(10000000 / m_fFramerate);    // frames
                
                pvi->bmiHeader.biWidth = _DEFAULT_CAP_WIDTH;                // frame width
                pvi->bmiHeader.biHeight = _DEFAULT_CAP_HEIGHT;                // frame height
                
        // resize our window to the default capture size
        //            ResizeWindow(HEADER(pmt->pbFormat)->biWidth,
        //                ABS(HEADER(pmt->pbFormat)->biHeight));
                
                m_pVStreamConfig->SetFormat(pmt);
        }
        DeleteMediaType(pmt);
}