pixinn / rgb2amiga Goto Github PK

  _imageRGB = img;
 
  // Constrain the colors to the provided Palette. We cannot only use the
  // default quantization, because that will introduce colorshifts to better
  // represent neighbouring pixel regions, it does not respect the colors
  // already in the image.
  _imageRGB.quantizeColors(nbColors);
  _imageRGB.quantizeDither(dither);
  _imageRGB.quantizeDitherMethod(Magick::FloydSteinbergDitherMethod);
  //_imageRGB.orderedDither("o3x3,2");
  _imageRGB.quantize();
  // now map the color reduced image using a map that only contains valid Amiga colors
  CPalette quantizedPalette = CPaletteFactory::GetInstance().GetUniqueColors(_imageRGB);
  Image map(Geometry(quantizedPalette.size(), 1), "white");
  MagickCore::PixelPacket* pixel = map.getPixels(0, 0, map.size().width(), map.size().height());
  for (std::size_t i = 0u; i < quantizedPalette.size(); ++i)
  {
    const auto nearestAmigaColor = paletteSpace.GetNearestColor(quantizedPalette[i]);
    pixel->red = nearestAmigaColor.r << (8 * (sizeof(pixel->red) - 1));
    pixel->green = nearestAmigaColor.g << (8 * (sizeof(pixel->green) - 1));
    pixel->blue = nearestAmigaColor.b << (8 * (sizeof(pixel->blue) - 1));
    ++pixel;
  }
  map.syncPixels();
  // map again from the original, which can potentially match slightly better
  _imageRGB = img;
  _imageRGB.map(map, dither);

  _palette = CPaletteFactory::GetInstance().GetUniqueColors(_imageRGB);

CORE_RL_bzlib_.dll
CORE_RL_lcms_.dll
CORE_RL_lqr_.dll