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Как изменить pixelformat TWICImage в Delphi 2010

У меня есть TWicImage, IWicBitmap и IWicBitmapSource, который работает приятно для отображения всех поддерживаемых графических форматов файлов, позволяет Вращение, Зеркально отраженную Горизонтальную, Зеркально отраженную Вертикаль, Scaleing и Clipping. Все они, кажется, работают хорошо, и я могу получить WicImages pixelformat, но я не могу выяснить, как изменить или установить pixelformat TWicImage.

Я создал диалоговое окно для возврата WICPixelFormatGUID, который будет использоваться в качестве pixelformat для преобразования.

Кто-либо может совместно использовать некоторый код, который демонстрирует, как изменить pixelformat WicImage с IWICColorTransform или другим методом Wincodec?

Счет

На полпути до 2011 теперь... так для тех, которые могут хотеть знать, что я попробовал это и это, кажется, работает (это использует TcxImage Developer Express, но я подозреваемый TImage буду работать также):

procedure TForm1.N16bitBGR1Click( Sender: TObject );
var
  wicImg: TWICImage;
  wicBitmap: IWICBitmap;
  iBmpSource: IWICBitmapSource;
  puiWidth, puiHeight: UINT;
  iConverter: IWICFormatConverter;
begin
  if cxImage1.Picture.Graphic is TWICImage then
  begin
    Screen.Cursor := crHourGlass;
    try
      wicImg := TWICImage( cxImage1.Picture.Graphic );
      wicImg.ImagingFactory.CreateFormatConverter( iConverter );
      iBmpSource := wicImg.Handle as IWICBitmapSource;
      iBmpSource.GetSize( puiWidth, puiHeight );
      iConverter.Initialize( iBmpSource, GUID_WICPixelFormat16bppBGR555, WICBitmapDitherTypeNone, nil, 0,
        WICBitmapPaletteTypeMedianCut );
      wicImg.ImagingFactory.CreateBitmapFromSourceRect( iConverter, 0, 0, puiWidth, puiHeight, wicBitmap );
      if Assigned( wicBitmap ) then
        wicImg.Handle := wicBitmap;
      cxImage1.Repaint;
      cxImage1.Update;
      cxImage1.Invalidate;
      dxStatusBar1.Panels[ 0 ].Text := ExtractFileDir( AFilename );
      dxStatusBar1.Panels[ 1 ].Text := ExtractFileName( AFilename );
      dxStatusBar1.Panels[ 2 ].Text := 'Width: ' + IntToStr( WICImageWidth( cxImage1 ) );
      dxStatusBar1.Panels[ 3 ].Text := 'Height: ' + IntToStr( WICImageHeight( cxImage1 ) );
      dxStatusBar1.Panels[ 4 ].Text := 'Pixel Format: ' + WICGetPixelFormat( cxImage1 );
    finally
      Screen.Cursor := crDefault;
    end;
  end;
end;

procedure TForm1.N16bitGray1Click( Sender: TObject );
var
  wicImg: TWICImage;
  wicBitmap: IWICBitmap;
  iBmpSource: IWICBitmapSource;
  puiWidth, puiHeight: UINT;
  iConverter: IWICFormatConverter;
begin
  if cxImage1.Picture.Graphic is TWICImage then
  begin
    Screen.Cursor := crHourGlass;
    try
      wicImg := TWICImage( cxImage1.Picture.Graphic );
      wicImg.ImagingFactory.CreateFormatConverter( iConverter );
      iBmpSource := wicImg.Handle as IWICBitmapSource;
      iBmpSource.GetSize( puiWidth, puiHeight );
      iConverter.Initialize( iBmpSource, GUID_WICPixelFormat16bppGray, WICBitmapDitherTypeSolid, nil, 0,
        WICBitmapPaletteTypeFixedGray16 );
      wicImg.ImagingFactory.CreateBitmapFromSourceRect( iConverter, 0, 0, puiWidth, puiHeight, wicBitmap );
      if Assigned( wicBitmap ) then
        wicImg.Handle := wicBitmap;
      cxImage1.Repaint;
      cxImage1.Update;
      cxImage1.Invalidate;
      dxStatusBar1.Panels[ 0 ].Text := ExtractFileDir( AFilename );
      dxStatusBar1.Panels[ 1 ].Text := ExtractFileName( AFilename );
      dxStatusBar1.Panels[ 2 ].Text := 'Width: ' + IntToStr( WICImageWidth( cxImage1 ) );
      dxStatusBar1.Panels[ 3 ].Text := 'Height: ' + IntToStr( WICImageHeight( cxImage1 ) );
      dxStatusBar1.Panels[ 4 ].Text := 'Pixel Format: ' + WICGetPixelFormat( cxImage1 );
    finally
      Screen.Cursor := crDefault;
    end;
  end;
end;

procedure TForm1.N24bitGBB1Click( Sender: TObject );
var
  wicImg: TWICImage;
  wicBitmap: IWICBitmap;
  iBmpSource: IWICBitmapSource;
  puiWidth, puiHeight: UINT;
  iConverter: IWICFormatConverter;
begin
  if cxImage1.Picture.Graphic is TWICImage then
  begin
    Screen.Cursor := crHourGlass;
    try
      wicImg := TWICImage( cxImage1.Picture.Graphic );
      wicImg.ImagingFactory.CreateFormatConverter( iConverter );
      iBmpSource := wicImg.Handle as IWICBitmapSource;
      iBmpSource.GetSize( puiWidth, puiHeight );
      iConverter.Initialize( iBmpSource, GUID_WICPixelFormat24bppBGR, WICBitmapDitherTypeNone, nil, 0,
        WICBitmapPaletteTypeMedianCut );
      wicImg.ImagingFactory.CreateBitmapFromSourceRect( iConverter, 0, 0, puiWidth, puiHeight, wicBitmap );
      if Assigned( wicBitmap ) then
        wicImg.Handle := wicBitmap;
      cxImage1.Repaint;
      cxImage1.Update;
      cxImage1.Invalidate;
      dxStatusBar1.Panels[ 0 ].Text := ExtractFileDir( AFilename );
      dxStatusBar1.Panels[ 1 ].Text := ExtractFileName( AFilename );
      dxStatusBar1.Panels[ 2 ].Text := 'Width: ' + IntToStr( WICImageWidth( cxImage1 ) );
      dxStatusBar1.Panels[ 3 ].Text := 'Height: ' + IntToStr( WICImageHeight( cxImage1 ) );
      dxStatusBar1.Panels[ 4 ].Text := 'Pixel Format: ' + WICGetPixelFormat( cxImage1 );
    finally
      Screen.Cursor := crDefault;
    end;
  end;
end;

procedure TForm1.N2bitIndexed1Click( Sender: TObject );
var
  wicImg: TWICImage;
  wicBitmap: IWICBitmap;
  iBmpSource: IWICBitmapSource;
  puiWidth, puiHeight: UINT;
  iConverter: IWICFormatConverter;
begin
  if cxImage1.Picture.Graphic is TWICImage then
  begin
    Screen.Cursor := crHourGlass;
    try
      wicImg := TWICImage( cxImage1.Picture.Graphic );
      wicImg.ImagingFactory.CreateFormatConverter( iConverter );
      iBmpSource := wicImg.Handle as IWICBitmapSource;
      iBmpSource.GetSize( puiWidth, puiHeight );
      iConverter.Initialize( iBmpSource, GUID_WICPixelFormat2bppIndexed, WICBitmapDitherTypeNone, nil, 0,
        WICBitmapPaletteTypeMedianCut );
      wicImg.ImagingFactory.CreateBitmapFromSourceRect( iConverter, 0, 0, puiWidth, puiHeight, wicBitmap );
      if Assigned( wicBitmap ) then
        wicImg.Handle := wicBitmap;
      cxImage1.Repaint;
      cxImage1.Update;
      cxImage1.Invalidate;
      dxStatusBar1.Panels[ 0 ].Text := ExtractFileDir( AFilename );
      dxStatusBar1.Panels[ 1 ].Text := ExtractFileName( AFilename );
      dxStatusBar1.Panels[ 2 ].Text := 'Width: ' + IntToStr( WICImageWidth( cxImage1 ) );
      dxStatusBar1.Panels[ 3 ].Text := 'Height: ' + IntToStr( WICImageHeight( cxImage1 ) );
      dxStatusBar1.Panels[ 4 ].Text := 'Pixel Format: ' + WICGetPixelFormat( cxImage1 );
    finally
      Screen.Cursor := crDefault;
    end;
  end;
end;

procedure TForm1.N32bitGray1Click( Sender: TObject );
var
  wicImg: TWICImage;
  wicBitmap: IWICBitmap;
  iBmpSource: IWICBitmapSource;
  puiWidth, puiHeight: UINT;
  iConverter: IWICFormatConverter;
begin
  if cxImage1.Picture.Graphic is TWICImage then
  begin
    Screen.Cursor := crHourGlass;
    try
      wicImg := TWICImage( cxImage1.Picture.Graphic );
      wicImg.ImagingFactory.CreateFormatConverter( iConverter );
      iBmpSource := wicImg.Handle as IWICBitmapSource;
      iBmpSource.GetSize( puiWidth, puiHeight );
      iConverter.Initialize( iBmpSource, GUID_WICPixelFormat32bppGrayFloat, WICBitmapDitherTypeSolid, nil, 0,
        WICBitmapPaletteTypeFixedGray256 );
      wicImg.ImagingFactory.CreateBitmapFromSourceRect( iConverter, 0, 0, puiWidth, puiHeight, wicBitmap );
      if Assigned( wicBitmap ) then
        wicImg.Handle := wicBitmap;
      cxImage1.Repaint;
      cxImage1.Update;
      cxImage1.Invalidate;
      dxStatusBar1.Panels[ 0 ].Text := ExtractFileDir( AFilename );
      dxStatusBar1.Panels[ 1 ].Text := ExtractFileName( AFilename );
      dxStatusBar1.Panels[ 2 ].Text := 'Width: ' + IntToStr( WICImageWidth( cxImage1 ) );
      dxStatusBar1.Panels[ 3 ].Text := 'Height: ' + IntToStr( WICImageHeight( cxImage1 ) );
      dxStatusBar1.Panels[ 4 ].Text := 'Pixel Format: ' + WICGetPixelFormat( cxImage1 );
    finally
      Screen.Cursor := crDefault;
    end;
  end;
end;

procedure TForm1.N32bitGRBA1Click( Sender: TObject );
var
  wicImg: TWICImage;
  wicBitmap: IWICBitmap;
  iBmpSource: IWICBitmapSource;
  puiWidth, puiHeight: UINT;
  iConverter: IWICFormatConverter;
begin
  if cxImage1.Picture.Graphic is TWICImage then
  begin
    Screen.Cursor := crHourGlass;
    try
      wicImg := TWICImage( cxImage1.Picture.Graphic );
      wicImg.ImagingFactory.CreateFormatConverter( iConverter );
      iBmpSource := wicImg.Handle as IWICBitmapSource;
      iBmpSource.GetSize( puiWidth, puiHeight );
      iConverter.Initialize( iBmpSource, GUID_WICPixelFormat32bppPBGRA, WICBitmapDitherTypeNone, nil, 0,
        WICBitmapPaletteTypeMedianCut );
      wicImg.ImagingFactory.CreateBitmapFromSourceRect( iConverter, 0, 0, puiWidth, puiHeight, wicBitmap );
      if Assigned( wicBitmap ) then
        wicImg.Handle := wicBitmap;
      cxImage1.Repaint;
      cxImage1.Update;
      cxImage1.Invalidate;
      dxStatusBar1.Panels[ 0 ].Text := ExtractFileDir( AFilename );
      dxStatusBar1.Panels[ 1 ].Text := ExtractFileName( AFilename );
      dxStatusBar1.Panels[ 2 ].Text := 'Width: ' + IntToStr( WICImageWidth( cxImage1 ) );
      dxStatusBar1.Panels[ 3 ].Text := 'Height: ' + IntToStr( WICImageHeight( cxImage1 ) );
      dxStatusBar1.Panels[ 4 ].Text := 'Pixel Format: ' + WICGetPixelFormat( cxImage1 );
    finally
      Screen.Cursor := crDefault;
    end;
  end;
end;

procedure TForm1.N4bitIndexed1Click( Sender: TObject );
var
  wicImg: TWICImage;
  wicBitmap: IWICBitmap;
  iBmpSource: IWICBitmapSource;
  puiWidth, puiHeight: UINT;
  iConverter: IWICFormatConverter;
begin
  if cxImage1.Picture.Graphic is TWICImage then
  begin
    Screen.Cursor := crHourGlass;
    try
      wicImg := TWICImage( cxImage1.Picture.Graphic );
      wicImg.ImagingFactory.CreateFormatConverter( iConverter );
      iBmpSource := wicImg.Handle as IWICBitmapSource;
      iBmpSource.GetSize( puiWidth, puiHeight );
      iConverter.Initialize( iBmpSource, GUID_WICPixelFormat4bppIndexed, WICBitmapDitherTypeNone, nil, 0,
        WICBitmapPaletteTypeMedianCut );
      wicImg.ImagingFactory.CreateBitmapFromSourceRect( iConverter, 0, 0, puiWidth, puiHeight, wicBitmap );
      if Assigned( wicBitmap ) then
        wicImg.Handle := wicBitmap;
      cxImage1.Repaint;
      cxImage1.Update;
      cxImage1.Invalidate;
      dxStatusBar1.Panels[ 0 ].Text := ExtractFileDir( AFilename );
      dxStatusBar1.Panels[ 1 ].Text := ExtractFileName( AFilename );
      dxStatusBar1.Panels[ 2 ].Text := 'Width: ' + IntToStr( WICImageWidth( cxImage1 ) );
      dxStatusBar1.Panels[ 3 ].Text := 'Height: ' + IntToStr( WICImageHeight( cxImage1 ) );
      dxStatusBar1.Panels[ 4 ].Text := 'Pixel Format: ' + WICGetPixelFormat( cxImage1 );
    finally
      Screen.Cursor := crDefault;
    end;
  end;
end;

procedure TForm1.N8bitGray1Click( Sender: TObject );
var
  wicImg: TWICImage;
  wicBitmap: IWICBitmap;
  iBmpSource: IWICBitmapSource;
  puiWidth, puiHeight: UINT;
  iConverter: IWICFormatConverter;
begin
  if cxImage1.Picture.Graphic is TWICImage then
  begin
    Screen.Cursor := crHourGlass;
    try
      wicImg := TWICImage( cxImage1.Picture.Graphic );
      wicImg.ImagingFactory.CreateFormatConverter( iConverter );
      iBmpSource := wicImg.Handle as IWICBitmapSource;
      iBmpSource.GetSize( puiWidth, puiHeight );
      iConverter.Initialize( iBmpSource, GUID_WICPixelFormat8bppGray, WICBitmapDitherTypeSolid, nil, 0,
        WICBitmapPaletteTypeMedianCut );
      wicImg.ImagingFactory.CreateBitmapFromSourceRect( iConverter, 0, 0, puiWidth, puiHeight, wicBitmap );
      if Assigned( wicBitmap ) then
        wicImg.Handle := wicBitmap;
      cxImage1.Repaint;
      cxImage1.Update;
      cxImage1.Invalidate;
      dxStatusBar1.Panels[ 0 ].Text := ExtractFileDir( AFilename );
      dxStatusBar1.Panels[ 1 ].Text := ExtractFileName( AFilename );
      dxStatusBar1.Panels[ 2 ].Text := 'Width: ' + IntToStr( WICImageWidth( cxImage1 ) );
      dxStatusBar1.Panels[ 3 ].Text := 'Height: ' + IntToStr( WICImageHeight( cxImage1 ) );
      dxStatusBar1.Panels[ 4 ].Text := 'Pixel Format: ' + WICGetPixelFormat( cxImage1 );
    finally
      Screen.Cursor := crDefault;
    end;
  end;
end;

procedure TForm1.N8bitIndexed1Click( Sender: TObject );
var
  wicImg: TWICImage;
  wicBitmap: IWICBitmap;
  iBmpSource: IWICBitmapSource;
  puiWidth, puiHeight: UINT;
  iConverter: IWICFormatConverter;
begin
  if cxImage1.Picture.Graphic is TWICImage then
  begin
    Screen.Cursor := crHourGlass;
    try
      wicImg := TWICImage( cxImage1.Picture.Graphic );
      wicImg.ImagingFactory.CreateFormatConverter( iConverter );
      iBmpSource := wicImg.Handle as IWICBitmapSource;
      iBmpSource.GetSize( puiWidth, puiHeight );
      iConverter.Initialize( iBmpSource, GUID_WICPixelFormat8bppIndexed, WICBitmapDitherTypeNone, nil, 0,
        WICBitmapPaletteTypeFixedGray256 );
      wicImg.ImagingFactory.CreateBitmapFromSourceRect( iConverter, 0, 0, puiWidth, puiHeight, wicBitmap );
      if Assigned( wicBitmap ) then
        wicImg.Handle := wicBitmap;
      cxImage1.Repaint;
      cxImage1.Update;
      cxImage1.Invalidate;
      dxStatusBar1.Panels[ 0 ].Text := ExtractFileDir( AFilename );
      dxStatusBar1.Panels[ 1 ].Text := ExtractFileName( AFilename );
      dxStatusBar1.Panels[ 2 ].Text := 'Width: ' + IntToStr( WICImageWidth( cxImage1 ) );
      dxStatusBar1.Panels[ 3 ].Text := 'Height: ' + IntToStr( WICImageHeight( cxImage1 ) );
      dxStatusBar1.Panels[ 4 ].Text := 'Pixel Format: ' + WICGetPixelFormat( cxImage1 );
    finally
      Screen.Cursor := crDefault;
    end;
  end;
end;
26
задан gustavogbc 13 June 2013 в 21:43
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