读取AVI文件，将每帧显示到界面

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int OpenIrVideo::SendImageData(THPARAM *param, int sourceDes,CFile& fs) //发送镜像数据
{
g_imageBuffSize=_IR_320_BUFF_SIZE_;

AVIFileInit();                                                  //初始化AVI文件

PAVIFILE avi;
    int res=AVIFileOpen(&avi, m_AVIName, OF_READ, NULL);           //打开avi文件，m_AVIName是avi路径名
if (res!=AVIERR_OK)
    {
        //an error occures
        if (avi!=NULL)
            AVIFileRelease(avi);
    }

AVIFILEINFO avi_info;
    AVIFileInfo(avi, &avi_info, sizeof(AVIFILEINFO));
PAVISTREAM pStream;
    res=AVIFileGetStream(avi, &pStream, streamtypeVIDEO /*video stream*/,
  0 /*first stream*/);

    if (res!=AVIERR_OK)
    {
        if (pStream!=NULL)
            AVIStreamRelease(pStream);

        AVIFileExit();
    }

int iNumFrames;
    int iFirstFrame;

    iFirstFrame=AVIStreamStart(pStream);                    //获取起始帧
    if (iFirstFrame==-1)
    {
        //Error getteing the frame inside the stream

        if (pStream!=NULL)
            AVIStreamRelease(pStream);

        AVIFileExit();
    }

    iNumFrames=AVIStreamLength(pStream);            //获取帧长度
if (iNumFrames==-1)
    {
        //Error getteing the number of frames inside the stream

        if (pStream!=NULL)
            AVIStreamRelease(pStream);

        AVIFileExit();
    }
PGETFRAME pFrame;
    pFrame=AVIStreamGetFrameOpen(pStream,
  NULL/*(BITMAPINFOHEADER*) AVIGETFRAMEF_BESTDISPLAYFMT*/ /*&bih*/);
int index=0;
BYTE* pDIB;
    for (int i=iFirstFrame; i<iNumFrames; i++)
    {
        index= i-iFirstFrame;

  pDIB = (BYTE*)AVIStreamGetFrame(pFrame, index);                                   //获取每帧的数据流
  SynSendData(param,4,pDIB,g_imageBuffSize);
  m_Bitmap = BufferToBitmap(pDIB);            //将内存中的BMP文件内容转换到HBITMAP

  HBITMAP OldBitmap;
  CWnd* pWnd = CWnd::FromHandle(m_winPicHandle);;
  CDC* pDC = pWnd->GetDC();
  CDC MemDC;
  MemDC.CreateCompatibleDC(pDC);
  OldBitmap = (HBITMAP)MemDC.SelectObject(m_Bitmap);
  CRect rect;
  pWnd->GetClientRect(&rect);
  pDC->BitBlt(0,0,rect.Width(),rect.Height(),&MemDC,0,0,SRCCOPY);
  MemDC.SelectObject(OldBitmap);
  MemDC.DeleteDC();
     pWnd->ReleaseDC(pDC);
  Sleep(100);
  if(i == iNumFrames-1)
  {
   i = 0;
  }
}

return 1;
}

HBITMAP OpenIrVideo::BufferToBitmap(LPBYTE pDIB)                      //返回值为获取BMP的位图
{
HBITMAP hShowBMP;
ASSERT(pDIB!=NULL);

//Creates a full-color (no palette) DIB from a pointer to a
//full-color memory DIB

//get the BitmapInfoHeader
    BITMAPINFOHEADER bih;
    RtlMoveMemory(&bih.biSize, pDIB, sizeof(BITMAPINFOHEADER));

BYTE* Bits=new BYTE[bih.biSizeImage];

RtlMoveMemory(Bits, pDIB + sizeof(BITMAPINFOHEADER), bih.biSizeImage); //将文件起始的40个字节去掉，否则会出现错位的情况

BITMAPINFO &bmInfo = *(LPBITMAPINFO)pDIB;

CWnd* pWnd = CWnd::FromHandle(m_winPicHandle);;
CDC* pDC = pWnd->GetDC();
hShowBMP = CreateDIBitmap(pDC->m_hDC,&bih,CBM_INIT,Bits,&bmInfo,DIB_RGB_COLORS);
pWnd->ReleaseDC(pDC);
return hShowBMP;
}