VC++读取AVi视频文件

头文件 #include <Vfw.h>

成员变量：

// for avi;
PGETFRAME Frame;
BITMAPFILEHEADER BMPFileHeader;
PAVIFILE aviFile;
PAVISTREAM aviStream;
AVISTREAMINFO aviStreamInfo;
int m_nFrameNumber;
BITMAPINFO* m_pBitMapInfo;
BYTE* pData;
int cy;
int cx;
HANDLE handle;
//

 

读取代码：

    AVIFileInit();
    AVIFileOpen(&aviFile, "E:\\Alizee.avi", OF_READ, NULL);
    AVIFileGetStream(aviFile, &aviStream, streamtypeVIDEO, 0);
    AVIStreamInfo(aviStream, &aviStreamInfo, sizeof(aviStreamInfo));

    AVIFILEINFO fileInfo;
    AVIFileInfo(aviFile, &fileInfo, sizeof(AVIFILEINFO));
    cx = fileInfo.dwWidth;
    cy = fileInfo.dwHeight;
    AVIFileGetStream(aviFile, &aviStream, streamtypeVIDEO, 0);
    m_pBitMapInfo = new BITMAPINFO;

    m_pBitMapInfo->bmiHeader.biBitCount = 32;
    m_pBitMapInfo->bmiHeader.biClrImportant=0; 
    m_pBitMapInfo->bmiHeader.biClrUsed=0; 
    m_pBitMapInfo->bmiHeader.biCompression=0; 
    m_pBitMapInfo->bmiHeader.biHeight=cy; 
    m_pBitMapInfo->bmiHeader.biWidth=cx; 
    m_pBitMapInfo->bmiHeader.biPlanes=1; 
    m_pBitMapInfo->bmiHeader.biSize=sizeof(BITMAPINFOHEADER);
    //m_pBitMapInfo->bmiHeader.biSizeImage = (cx * 24 + 31) / 32 * 4 * cy; //图像数据的大小;
    m_pBitMapInfo->bmiHeader.biSizeImage = 0;
    m_pBitMapInfo->bmiHeader.biXPelsPerMeter=0;
    m_pBitMapInfo->bmiHeader.biYPelsPerMeter=0; 
    handle=GlobalAlloc(GHND,((long)((cx*24+31)/32*4)*cy)); 
    pData=(BYTE*)GlobalLock(handle);

    BMPFileHeader.bfType = 0x4D42;
    BMPFileHeader.bfSize = (cx * 24 + 31) / 32 * 4 * cy + sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER); //图像的总大小;
    BMPFileHeader.bfReserved1=0;
    BMPFileHeader.bfReserved2=0;
    BMPFileHeader.bfOffBits = sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER); //24位真彩色位图恒为54;

    //////
    static CEngine* pEngine = ((CHKEditorApp*)AfxGetApp())->m_pEngine;
    assert(pEngine != NULL);

    m_nFrameNumber = 0;

       SetTimer(ID_AVI_TIMER, 1, 0);
    

定时器里面：

    case ID_AVI_TIMER:
        {
            if (m_nFrameNumber == aviStreamInfo.dwLength)
            {
                KillTimer(ID_AVI_TIMER);
                return;
            }
 
            PGETFRAME   pg = AVIStreamGetFrameOpen(aviStream, &(m_pBitMapInfo-> bmiHeader)); 
            pData = (BYTE*)AVIStreamGetFrame(pg, m_nFrameNumber++); 
            
//            CClientDC   dc(this); 
//            CRect   rect; 
//            GetClientRect(&rect); 
//            StretchDIBits(HDC(dc),0,0,rect.right,rect.bottom,0,0,cx,cy,pData,(BITMAPINFO*)m_pBitMapInfo,DIB_RGB_COLORS,SRCCOPY); 

            Engine->m_pixelBuffer->lock(Ogre::HardwareBuffer::HBL_DISCARD);

            memcpy(Engine->m_pixelBuffer->getCurrentLock().data, &BMPFileHeader, sizeof(BITMAPFILEHEADER));
            memcpy((BYTE*)Engine->m_pixelBuffer->getCurrentLock().data + sizeof(BITMAPFILEHEADER), m_pBitMapInfo,sizeof(BITMAPINFO));
            memcpy((BYTE*)Engine->m_pixelBuffer->getCurrentLock().data + sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFO), pData, cx*cy*3);

            //memcpy((BYTE*)Engine->m_pixelBuffer->getCurrentLock().data, pData,  cx * cy * 3/* + sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFO)*/);

            Engine->m_pixelBuffer->unlock();

            if (m_nFrameNumber == 5)
            {
                CFile   myfile;
                myfile.Open( "e:\\hkx.bmp",CFile::modeCreate|CFile::modeWrite|CFile::typeBinary);
                myfile.Write(&BMPFileHeader, sizeof(BITMAPFILEHEADER));
                myfile.Write(m_pBitMapInfo,sizeof(BITMAPINFO));
                myfile.Write(pData, cx * cy * 3);
                myfile.Close();
            }

            AVIStreamGetFrameClose(pg);

            Engine->m_Root->renderOneFrame();
        }
        break;