Knowledge Base Nr: 00164 aviread.cpp - http://www.swe-kaiser.de

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Win32: einzelne Bilder aus AVI-Datei extrahieren und anzeigen

  
void CAvitestDlg::OnFilm()
{
AVIFileInit();

PAVIFILE avifile;
PAVISTREAM pavi;

int nErr = AVIFileOpen(&avifile, "c:/temp/lulli-5f.avi", OF_READ, NULL);

nErr = AVIFileGetStream(avifile, &pavi,streamtypeVIDEO, 0);

AVISTREAMINFO psi;
nErr = AVIStreamInfo(pavi, &psi, sizeof(psi));
//psi.rcFrame (right, button): grösse x,y
//psi.dwStart, psi.dwLength frames

static LONG s_lStart = 0;

LONG lSamples = 1;
BYTE* pBuffer = new BYTE[psi.dwSuggestedBufferSize];
LONG lBytes;

nErr = AVIStreamRead(pavi, s_lStart, lSamples, pBuffer, psi.dwSuggestedBufferSize, &lBytes, &lSamples);

if (++s_lStart >= psi.dwLength)
s_lStart = 0;

//bild ausgeben
CImageSupport img;
img.SetBuffer(pBuffer, psi.rcFrame.right, psi.rcFrame.bottom, 24);

CWnd* pWnd = GetDlgItem(IDC_FRAME);
img.ShowThumbnail(pWnd);
//

delete[] pBuffer;

AVIFileRelease(avifile);

AVIFileExit();
}