Examples of net.sourceforge.jiu.data.Palette

net.sourceforge.jiu.data.Palette
This class represents a palette, a list of RGB colors. An RGB color here has three int values for its red, green and blue intensity. Each intensity value must be larger than or equal to zero and smaller than or equal to the maximum intensity value that can be given to the constructor {@link #Palette(int,int)}. This maximum value is typically 255. Note that the number of entries in a palette is restricted only by the element index type int so that palettes with more than 256 entries are no problem. When accessing (reading or writing) samples of this palette, use the constants {@link #INDEX_RED}, {@link #INDEX_GREEN} and {@link #INDEX_BLUE} ofthis class to define a color channel. @author Marco Schmidt @see net.sourceforge.jiu.data.PalettedImage

    {
      return null;
    }
    int width = image.getWidth();
    int height = image.getHeight();
    Palette palette = image.getPalette();
    if (width < 1 || height < 1 || palette == null)
    {
      return null;
    }
    int[] red = new int[palette.getNumEntries()];
    int[] green = new int[palette.getNumEntries()];
    int[] blue = new int[palette.getNumEntries()];
    for (int i = 0; i < palette.getNumEntries(); i++)
    {
      red[i] = palette.getSample(RGBIndex.INDEX_RED, i);
      green[i] = palette.getSample(RGBIndex.INDEX_GREEN, i);
      blue[i] = palette.getSample(RGBIndex.INDEX_BLUE, i);
    }
    int[] pixels = new int[width * height];
    byte[] data = new byte[width];
    int destOffset = 0;
    for (int y = 0; y < height; y++)

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    setBoundsIfNecessary(width, height);
    width = getBoundsWidth();
    height = getBoundsHeight();
    if (image instanceof Paletted8Image)
    {
      Palette palette = ((Paletted8Image)image).getPalette();
      int numEntries = palette.getNumEntries();
      if (numEntries < 1 || numEntries > 256)
      {
        throw new WrongParameterException("Palette of image to be saved must have 1..256 entries.");
      }
      bitsPerPixel = 8;

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  private void writePalette() throws IOException
  {
    PixelImage image = getImage();
    if (image instanceof Paletted8Image)
    {
      Palette palette = ((Paletted8Image)image).getPalette();
      int numEntries = 1 << bitsPerPixel;
      for (int i = 0; i < numEntries; i++)
      {
        if (i < palette.getNumEntries())
        {
          out.write(palette.getSample(RGBIndex.INDEX_RED, i));
          out.write(palette.getSample(RGBIndex.INDEX_GREEN, i));
          out.write(palette.getSample(RGBIndex.INDEX_BLUE, i));
        }
        else
        {
          out.write(0);
          out.write(0);

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      if (bytesToSkip < 0)
      {
        throw new InvalidFileStructureException("Not enough space in header for palette with " + 
          numPaletteEntries + "entries.");
      }
      palette = new Palette(numPaletteEntries);
      for (int index = 0; index < numPaletteEntries; index++)
      {
        int blue = in.readUnsignedByte();
        int green = in.readUnsignedByte();
        int red = in.readUnsignedByte();

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    }
    if (pi instanceof Paletted8Image)
    {
      // always write 256 entries; if there aren't enough
      // in the palette, fill it up to 256 with (0, 0, 0, 0)
      Palette palette = ((Paletted8Image)pi).getPalette();
      for (int i = 0; i < 256; i++)
      {
        if (i < palette.getNumEntries())
        {
          out.write(palette.getSample(RGBIndex.INDEX_BLUE, i));
          out.write(palette.getSample(RGBIndex.INDEX_GREEN, i));
          out.write(palette.getSample(RGBIndex.INDEX_RED, i));
          out.write(0);
        }
        else
        {
          out.writeInt(0); // writes four 0 bytes

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  private int version;
  private int width;


  private static Palette createPalette(short[][] data)
  {
    Palette result = new Palette(data.length);
    for (int i = 0; i < data.length; i++)
    {
      result.put(i, data[i][0], data[i][1], data[i][2]);
    }
    return result;
  }

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    int numEntries = in.readShort() & 0xffff;
    if (numEntries < 1 || numEntries > 256)
    {
      throw new WrongFileFormatException("Not a Palm image file, invalid number of palette entries: "  + numEntries);
    }
    palette = new Palette(numEntries, 255);
    for (int i = 0; i < numEntries; i++)
    {
      //int reserved = in.readUnsignedByte();
      in.readUnsignedByte();
      int red = in.readUnsignedByte();

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    saveFinalCompressedSize(out);
  }


  private void save(DataOutput out, Paletted8Image image) throws IOException
  {
    Palette palette = image.getPalette();
    boolean system256Palette = isPalmSystemPalette256(palette);
    boolean system16GrayPalette = isPalmSystemPaletteGray16(palette);
    boolean system16ColorPalette = isPalmSystemPaletteColor16(palette);
    boolean system4GrayPalette = isPalmSystemPaletteGray4(palette);
    boolean customPalette = !(system256Palette || system16GrayPalette || system16ColorPalette || system4GrayPalette);
    if (customPalette)
    {
      flags |= FLAG_COLOR_TABLE;
    }
    // determine bits per pixel, bytesPerRow
    if (palette.getNumEntries() <= 4)
    {
      bitsPerPixel = 2;
      bytesPerRow = (width + 3) / 4;
    }
    else
    if (palette.getNumEntries() <= 16)
    {
      bitsPerPixel = 4;
      bytesPerRow = (width + 1) / 2;
    }
    else

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          " Color map length was expected to be 768 (found " + 
          colorModeSize + ").");
      }
      colorMap = new byte[colorModeSize];
      in.readFully(colorMap);
      palette = new Palette(256, 255);
      for (int index = 0; index < 256; index++)
      {
        palette.putSample(Palette.INDEX_RED, index, colorMap[index] & 0xff);
        palette.putSample(Palette.INDEX_GREEN, index, colorMap[256 + index] & 0xff);
        palette.putSample(Palette.INDEX_BLUE, index, colorMap[512 + index] & 0xff);

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  private void process(RGB24Image image1, Paletted8Image image2)
  {
    final int HEIGHT = image1.getHeight();
    final int WIDTH = image1.getWidth();
    long sum = 0;
    Palette pal = image2.getPalette();
    int[] red = pal.getSamples(RGBIndex.INDEX_RED);
    int[] green = pal.getSamples(RGBIndex.INDEX_GREEN);
    int[] blue = pal.getSamples(RGBIndex.INDEX_BLUE);
    for (int y = 0; y < HEIGHT; y++)
    {
      for (int x = 0; x < WIDTH; x++)
      {
        int palSample = image2.getSample(x, y);

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net.sourceforge.jiu.codecs.BMPCodec

net.sourceforge.jiu.codecs.GIFCodec

net.sourceforge.jiu.codecs.IFFCodec

net.sourceforge.jiu.codecs.PalmCodec

net.sourceforge.jiu.codecs.PNGCodec

net.sourceforge.jiu.codecs.PSDCodec

net.sourceforge.jiu.codecs.RASCodec

net.sourceforge.jiu.codecs.tiff.TIFFImageFileDirectory

net.sourceforge.jiu.color.adjustment.Brightness

net.sourceforge.jiu.color.adjustment.Contrast

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