public final BufferedImage filter(BufferedImage src, BufferedImage dst) {
if (src == dst) {
// awt.252=Source can't be same as the destination
throw new IllegalArgumentException(Messages.getString("awt.252")); // $NON-NLS-1$
}
ColorModel srcCM = src.getColorModel();
BufferedImage finalDst = null;
if (srcCM instanceof IndexColorModel
&& (iType != TYPE_NEAREST_NEIGHBOR || srcCM.getPixelSize() % 8 != 0)) {
src = ((IndexColorModel) srcCM).convertToIntDiscrete(src.getRaster(), true);
srcCM = src.getColorModel();
}
if (dst == null) {
dst = createCompatibleDestImage(src, srcCM);
} else {
if (!srcCM.equals(dst.getColorModel())) {
// Treat BufferedImage.TYPE_INT_RGB and
// BufferedImage.TYPE_INT_ARGB as same
if (!((src.getType() == BufferedImage.TYPE_INT_RGB
|| src.getType() == BufferedImage.TYPE_INT_ARGB)
&& (dst.getType() == BufferedImage.TYPE_INT_RGB
|| dst.getType() == BufferedImage.TYPE_INT_ARGB))) {
finalDst = dst;
dst = createCompatibleDestImage(src, srcCM);
}
}
}
// Skip alpha channel for TYPE_INT_RGB images
if (slowFilter(src.getRaster(), dst.getRaster()) != 0) {
// awt.21F=Unable to transform source
throw new ImagingOpException(Messages.getString("awt.21F")); // $NON-NLS-1$
// TODO - uncomment
// if (ippFilter(src.getRaster(), dst.getRaster(), src.getType()) !=
// 0)
// throw new ImagingOpException ("Unable to transform source");
}
if (finalDst != null) {
Graphics2D g = finalDst.createGraphics();
g.setComposite(AlphaComposite.Src);
g.drawImage(dst, 0, 0, null);
} else {
finalDst = dst;
}
return finalDst;
}
