///////ijl中函数RGB压缩到缓冲区///////////////

bool EncodeToJpgBUFFER(

  BYTE* lpRgbBuffer,//in

  DWORD dwWidth,//in

  DWORD dwHeight,//in

  BYTE** lppJpgBuffer,//out

  DWORD* lpdwJpgBufferSize)//out

 {

  bool bres;

  IJLERR jerr;

  DWORD dwRgbBufferSize;

  BYTE *lpTemp;

  JPEG_CORE_PROPERTIES jcprops;

  bres=true;

  jerr=ijlInit(&jcprops);

  if(IJL_OK!=jerr)

  {

   OutputDebugString("ijlInit³õʼ»¯´íÎó");

   bres=false;

   goto err_process;

  }

  dwRgbBufferSize=dwWidth*dwHeight*3;

  lpTemp=NULL;

  lpTemp=new BYTE[dwRgbBufferSize];

  if(NULL==lpTemp)

  {

   OutputDebugString("·ÖÅäÁÙʱ»º³åÇølpTempʧ°Ü");

   bres=false;

   goto err_process;

  }

  jcprops.DIBWidth=dwWidth;

  jcprops.DIBHeight=dwHeight;

  jcprops.DIBBytes=lpRgbBuffer;

  jcprops.DIBPadBytes=0;

  jcprops.DIBChannels=3;

  jcprops.DIBColor=IJL_RGB;

  jcprops.JPGWidth=dwWidth;

  jcprops.JPGHeight=dwHeight;

  jcprops.JPGFile=NULL;

  jcprops.JPGBytes=lpTemp;

  jcprops.JPGSizeBytes=dwRgbBufferSize;

  jcprops.JPGChannels=3;

  jcprops.JPGColor=IJL_YCBCR;

  jcprops.JPGSubsampling=IJL_411;

  jcprops.jquality=75;

  jerr=ijlWrite(&jcprops,IJL_JBUFF_WRITEWHOLEIMAGE);

  if(IJL_OK!=jerr)

  {

   char szDebug[256];  

   sprintf(szDebug, "JPEGѹËõʧ°Ü:%d, Width:%d, Height:%d", jerr, jcprops.JPGWidth,

jcprops.JPGHeight);

   OutputDebugString(szDebug);

   bres=false;

   goto err_process;

  }

     *lppJpgBuffer=lpTemp;

     *lpdwJpgBufferSize=jcprops.JPGSizeBytes;

     ijlFree(&jcprops);

err_process:

  if(false==bres)

     {

      if(NULL!=lpTemp)

      {

       delete[] lpTemp;

       lpTemp=NULL;

      }

     }

 return bres;

 }