从AVI中读取每帧数据显示到界面

 

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;
}