Examples of java.awt.color.ColorSpace

java.awt.color.ColorSpace

3.org/pub/WWW/Graphics/Color/sRGB.html"> http://www.w3.org/pub/WWW/Graphics/Color/sRGB.html .

The purpose of the methods to transform to/from the well-defined CIEXYZ color space is to support conversions between any two color spaces at a reasonably high degree of accuracy. It is expected that particular implementations of subclasses of ColorSpace (e.g. ICC_ColorSpace) will support high performance conversion based on underlying platform color management systems.

The CS_CIEXYZ space used by the toCIEXYZ/fromCIEXYZ methods can be described as follows:

       CIEXYZ       viewing illuminance: 200 lux       viewing white point: CIE D50       media white point: "that of a perfectly reflecting diffuser" -- D50        media black point: 0 lux or 0 Reflectance       flare: 1 percent       surround: 20percent of the media white point       media description: reflection print (i.e., RLAB, Hunt viewing media)       note: For developers creating an ICC profile for this conversion             space, the following is applicable.  Use a simple Von Kries             white point adaptation folded into the 3X3 matrix parameters             and fold the flare and surround effects into the three             one-dimensional lookup tables (assuming one uses the minimal             model for monitors).

@see ICC_ColorSpace @version 10 Feb 1997

            }
        break;


        case TYPE_3BYTE_BGR:
            {
                ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
                int[] nBits = {8, 8, 8};
                int[] bOffs = {2, 1, 0};
                colorModel = new ComponentColorModel(cs, nBits, false, false,
                                                     Transparency.OPAQUE,
                                                     DataBuffer.TYPE_BYTE);
                raster = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE,
                                                        width, height,
                                                        width*3, 3,
                                                        bOffs, null);
            }
        break;
            
        case TYPE_4BYTE_ABGR:
            {
                ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
                int[] nBits = {8, 8, 8, 8};
                int[] bOffs = {3, 2, 1, 0};
                colorModel = new ComponentColorModel(cs, nBits, true, false,
                                                     Transparency.TRANSLUCENT,
                                                     DataBuffer.TYPE_BYTE);
                raster = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE,
                                                        width, height,
                                                        width*4, 4,
                                                        bOffs, null);
            }
        break;


        case TYPE_4BYTE_ABGR_PRE:
            {
                ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
                int[] nBits = {8, 8, 8, 8};
                int[] bOffs = {3, 2, 1, 0};
                colorModel = new ComponentColorModel(cs, nBits, true, true,
                                                     Transparency.TRANSLUCENT,
                                                     DataBuffer.TYPE_BYTE);
                raster = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE,
                                                        width, height,
                                                        width*4, 4,
                                                        bOffs, null);
            }
        break;


        case TYPE_BYTE_GRAY:
            {
                ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_GRAY);
                int[] nBits = {8};
                colorModel = new ComponentColorModel(cs, nBits, false, true,
                                                     Transparency.OPAQUE,
                                                     DataBuffer.TYPE_BYTE);
                raster = colorModel.createCompatibleWritableRaster(width,
                                                                   height);
            }
        break;
                
        case TYPE_USHORT_GRAY:
            {
                ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_GRAY);
                int[] nBits = {16};
                colorModel = new ComponentColorModel(cs, nBits, false, true,
                                                     Transparency.OPAQUE,
                                                     DataBuffer.TYPE_USHORT);
                raster = colorModel.createCompatibleWritableRaster(width,

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        colorModel = cm;
        this.raster  = raster;
        this.properties = properties;
        int numBands = raster.getNumBands();
        boolean isAlphaPre = cm.isAlphaPremultiplied();
        ColorSpace cs;
        
        // Force the raster data alpha state to match the premultiplied 
        // state in the color model
        coerceData(isRasterPremultiplied);


        SampleModel sm = raster.getSampleModel();
        cs = cm.getColorSpace();
        int csType = cs.getType();
        if (csType != ColorSpace.TYPE_RGB) {
            if (csType == ColorSpace.TYPE_GRAY
                && cm instanceof ComponentColorModel) {
                // Check if this might be a child raster (fix for bug 4240596)
                if (sm instanceof ComponentSampleModel &&

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          // TODO: optimize other cases.
          final DataBufferByte db = new DataBufferByte(new byte[][] {bytes}, bytes.length);
          final ComponentSampleModel sm = new ComponentSampleModel(DataBuffer.TYPE_BYTE, w, h, pixelStride, lineStride, new int[] {redMask - 1, greenMask -1, blueMask -1});
          final WritableRaster r = Raster.createWritableRaster(sm, db, new Point(0, 0));
          // construction borrowed from BufferedImage constructor, for BufferedImage.TYPE_3BYTE_BGR
                  final ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
                  int[] nBits = {8, 8, 8};
                  //int[] bOffs = {2, 1, 0};
                  final ColorModel colorModel = new ComponentColorModel(cs, nBits, false, false,
                                                       Transparency.OPAQUE,
                                                       DataBuffer.TYPE_BYTE);
                  final BufferedImage bi = new BufferedImage(colorModel, r, false, null);
          return bi;
        }
        else if (bitsPerPixel == 32)
        {
          final DataBufferByte db = new DataBufferByte(new byte[][] {bytes}, bytes.length);
          final ComponentSampleModel sm = new ComponentSampleModel(DataBuffer.TYPE_BYTE, w, h, pixelStride, lineStride, new int[] {redMask - 1, greenMask -1, blueMask -1, 3});  // TODO: what to do with alpha?
          final WritableRaster r = Raster.createWritableRaster(sm, db, new Point(0, 0));
          // construction borrowed from BufferedImage constructor, for BufferedImage.TYPE_4BYTE_ABGR
                  final ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
                  int[] nBits = {8, 8, 8, 8};
                  //int[] bOffs = {3, 2, 1, 0};
                  final ColorModel colorModel = new ComponentColorModel(cs, nBits, true, false,
                                                       Transparency.TRANSLUCENT,
                                                       DataBuffer.TYPE_BYTE);

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        }
        return count;
    }


    public BufferedImage convertToColorSpace(BufferedImage bi, ColorSpace to) {
        ColorSpace from = bi.getColorModel().getColorSpace();


        RenderingHints hints = new RenderingHints(RenderingHints.KEY_RENDERING,
                RenderingHints.VALUE_RENDER_QUALITY);
        hints.put(RenderingHints.KEY_COLOR_RENDERING,
                RenderingHints.VALUE_COLOR_RENDER_QUALITY);

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        return result;
    }


    public BufferedImage convertTosRGB(BufferedImage bi) {
        ColorSpace cs_sRGB = ColorSpace.getInstance(ColorSpace.CS_sRGB);


        ColorModel srgbCM = ColorModel.getRGBdefault();
        cs_sRGB = srgbCM.getColorSpace();


        return convertToColorSpace(bi, cs_sRGB);

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        return convertToColorSpace(bi, cs_sRGB);
    }


    protected BufferedImage convertFromColorSpace(BufferedImage bi,
            ColorSpace from) {
        ColorSpace cs_sRGB;


        ColorModel srgbCM = ColorModel.getRGBdefault();
        cs_sRGB = srgbCM.getColorSpace();


        return convertBetweenColorSpaces(bi, from, cs_sRGB);

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                if (is_srgb == null || !is_srgb.booleanValue())
                {
                    ICC_ColorSpace cs = new ICC_ColorSpace(icc_profile);


                    ColorModel srgbCM = ColorModel.getRGBdefault();
                    ColorSpace cs_sRGB = srgbCM.getColorSpace();


                    result = new ColorTools().convertBetweenColorSpaces(result,
                            cs, cs_sRGB);
                }
            }

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     * @throws IOException If there is an error creating the color space.
     */
    public ColorSpace createColorSpace() throws IOException
    {
        InputStream profile = null;
        ColorSpace cSpace = null;
        try
        {
            profile = stream.createInputStream();
            ICC_Profile iccProfile = ICC_Profile.getInstance( profile );
            cSpace = new ICC_ColorSpace( iccProfile );

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     *
     * @throws IOException If there is an error creating the color model.
     */
    public ColorModel createColorModel( int bpc ) throws IOException
    {
        ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_GRAY);
        int[] nBits = {bpc};
        ColorModel colorModel = new ComponentColorModel(cs, nBits, false,false,
                Transparency.OPAQUE,DataBuffer.TYPE_BYTE);
        return colorModel;

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            //for now we will just make rgb a special case.
            retval = new Color( components[0], components[1], components[2] );
        }
        else
        {
            ColorSpace cs = colorSpace.createColorSpace();
            retval = new Color( cs, components, 1f );
        }
        return retval;
    }

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