Baumer工业相机堡盟工业相机如何通过BGAPI SDK和GDI+库中的Image类图像压缩算法进行图像压缩保存（C++）

#include <afxwin.h>
#include <gdiplus.h>
#pragma comment(lib, "gdiplus.lib")
using namespace Gdiplus;

//图像回调函数
//==================
void BGAPI2CALL BufferHandler( void * callBackOwner, Buffer * pBufferFilled )
{
  CGigeDemoDlg* pDlg = (CGigeDemoDlg*)callBackOwner;
  unsigned char* imagebuffer = NULL;
  USES_CONVERSION;
  try
  {
  if(pBufferFilled == NULL)
  {
  }
  else if(pBufferFilled->GetIsIncomplete() == true)
  {
    // queue buffer again
    pBufferFilled->QueueBuffer();
  }
  else
  {
    pDlg->FrameID= pBufferFilled->GetFrameID();                                                 //获取当前图像FrameID显示帧率
    int width = 0, height = 0;
    width = (int)pBufferFilled->GetWidth();height = (int)pBufferFilled->GetHeight();    //获取当前图像像素长宽
    CString PixelFormat1 = (CString)pBufferFilled->GetPixelFormat();        //获取当前图像像素格式
    imagebuffer = (BYTE*)((bo_int64)pBufferFilled->GetMemPtr()+pBufferFilled->GetImageOffset());//获取当前图像数据
    #pragma region //保存图像功能
    if(pDlg->m_bSaveImage &&!pDlg->m_strDirectory.IsEmpty())
    {
    CTime time = CTime::GetCurrentTime(); 
    CString strtime;
    strtime.Format(_T("\\%4d%2d%2d%2d%2d%2d"),time.GetYear(),time.GetMonth(),time.GetDay(),time.GetHour(),time.GetMinute(),time.GetSecond());
    CString  strpath = pDlg->m_strDirectory+strtime+".jpg";
    pDlg->SaveImageMono(strpath, imagebuffer,width,height);
    pDlg->m_bSaveImage = false;
    }
    #pragma endregion 
    Gdiplus::Rect rc = Gdiplus::Rect(0,0,width,height);
    #pragma region 黑白相机代码：像素格式为mono时转Bitmap的代码，彩色相机此处代码不同
    if(pDlg->m_pBitmap == NULL)
    {
    pDlg->m_pBitmap = new Gdiplus::Bitmap(width,height,PixelFormat8bppIndexed);
    }
    Gdiplus::BitmapData lockedbits;
    Gdiplus::ColorPalette * pal = (Gdiplus::ColorPalette*)new BYTE[sizeof(Gdiplus::ColorPalette)+255*sizeof(Gdiplus::ARGB)];
    pal->Count=256;
    for(UINT i=0;i<256;i++)
    {
    UINT color=i*65536+i*256+i;
    color= color|0xFF000000;
    pal->Entries[i]=color;
    }
    pDlg->m_pBitmap->SetPalette(pal);
    Gdiplus::Status ret = pDlg->m_pBitmap->LockBits(&rc,Gdiplus::ImageLockModeWrite,PixelFormat8bppIndexed,&lockedbits);
    BYTE* pixels = (BYTE*)lockedbits.Scan0;
    BYTE* src = (BYTE*)imagebuffer;
    for (int row = 0; row < height; ++row) 
    {
    CopyMemory(pixels, src, lockedbits.Stride);
    pixels += width;
    src += width;
    }
    pDlg->m_pBitmap->UnlockBits(&lockedbits);
    #pragma endregion 
    // 将Bitmap对象转换为Image对象
    Image* img = (Image*)m_pBitmap.GetThumbnailImage(width, height, NULL, NULL);
    //将Image图像进行JPEG图像压缩,压缩质量80
    CString OutputImagePath = _T("CompressedImage.jpg")
    CompressImage(img , OutputImagePath , 80);
    #pragma region //将图像显示在PictureControl控件上
    HDC hDC = ::GetDC(pDlg->m_stcPicture.m_hWnd);
    Gdiplus::Graphics GdiplusDC(hDC);
    CRect rcControl;
    pDlg->m_stcPicture.GetWindowRect(&rcControl);
    Gdiplus::Rect rtImage(0,0,rcControl.Width(),rcControl.Height());
    GdiplusDC.DrawImage(pDlg->m_pBitmap,rtImage,0,0,width,height, Gdiplus::UnitPixel);
    delete []pal;
    ::ReleaseDC(pDlg->m_stcPicture.m_hWnd,hDC);
    delete pDlg->m_pBitmap ;
    pDlg->m_pBitmap =NULL;
    #pragma endregion 
    // queue buffer again
    pBufferFilled->QueueBuffer();
  }
  }
  catch (BGAPI2::Exceptions::IException& ex)
  {
  CString str;
  str.Format(_T("ExceptionType:%s! ErrorDescription:%s in function:%s"),ex.GetType(),ex.GetErrorDescription(),ex.GetFunctionName());  
  } 
}

void CompressImage(Image* image, const CString& destFile, int quality)
{
    if (image)
    {
        CLSID clsid;
        GetEncoderClsid(L"image/jpeg", &clsid);
        EncoderParameters encoderParams;
        encoderParams.Count = 1;
        encoderParams.Parameter[0].Guid = EncoderQuality;
        encoderParams.Parameter[0].Type = EncoderParameterValueTypeLong;
        encoderParams.Parameter[0].NumberOfValues = 1;
        encoderParams.Parameter[0].Value = &quality;
        image->Save(destFile, &clsid, &encoderParams);
        delete image;
    }
    GdiplusShutdown(gdiplusToken);
}