/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.sanselan;
import java.io.File;
import java.io.IOException;
import com.google.code.appengine.awt.RenderingHints;
import com.google.code.appengine.awt.color.ColorSpace;
import com.google.code.appengine.awt.color.ICC_ColorSpace;
import com.google.code.appengine.awt.color.ICC_Profile;
import com.google.code.appengine.awt.image.BufferedImage;
import com.google.code.appengine.awt.image.ColorConvertOp;
import com.google.code.appengine.awt.image.ColorModel;
import com.google.code.appengine.awt.image.ComponentColorModel;
import com.google.code.appengine.awt.image.DirectColorModel;
import com.google.code.appengine.awt.image.ImagingOpException;
/**
* This class is a mess and needs to be cleaned up.
*/
public class ColorTools {
public BufferedImage correctImage(BufferedImage src, File file)
throws ImageReadException, IOException {
ICC_Profile icc = Sanselan.getICCProfile(file);
if (icc == null)
return src;
ICC_ColorSpace cs = new ICC_ColorSpace(icc);
BufferedImage dst = convertFromColorSpace(src, cs);
return dst;
}
public BufferedImage relabelColorSpace(BufferedImage bi, ICC_Profile profile)
throws ImagingOpException {
ICC_ColorSpace cs = new ICC_ColorSpace(profile);
return relabelColorSpace(bi, cs);
}
public BufferedImage relabelColorSpace(BufferedImage bi, ColorSpace cs)
throws ImagingOpException {
// This does not do the conversion. It tries to relabel the
// BufferedImage
// with its actual (presumably correct) Colorspace.
// use this when the image is mislabeled, presumably having been
// wrongly assumed to be sRGB
ColorModel cm = deriveColorModel(bi, cs);
return relabelColorSpace(bi, cm);
}
public BufferedImage relabelColorSpace(BufferedImage bi, ColorModel cm)
throws ImagingOpException {
// This does not do the conversion. It tries to relabel the
// BufferedImage
// with its actual (presumably correct) Colorspace.
// use this when the image is mislabeled, presumably having been
// wrongly assumed to be sRGB
BufferedImage result = new BufferedImage(cm, bi.getRaster(), false,
null);
return result;
}
public ColorModel deriveColorModel(BufferedImage bi, ColorSpace cs)
throws ImagingOpException {
// boolean hasAlpha = (bi.getAlphaRaster() != null);
return deriveColorModel(bi, cs, false);
}
public ColorModel deriveColorModel(BufferedImage bi, ColorSpace cs,
boolean force_no_alpha) throws ImagingOpException {
return deriveColorModel(bi.getColorModel(), cs, force_no_alpha);
}
public ColorModel deriveColorModel(ColorModel old_cm, ColorSpace cs,
boolean force_no_alpha) throws ImagingOpException {
if (old_cm instanceof ComponentColorModel) {
ComponentColorModel ccm = (ComponentColorModel) old_cm;
// ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
if (force_no_alpha)
return new ComponentColorModel(cs, false, false,
ComponentColorModel.OPAQUE, ccm.getTransferType());
else
return new ComponentColorModel(cs, ccm.hasAlpha(), ccm
.isAlphaPremultiplied(), ccm.getTransparency(), ccm
.getTransferType());
} else if (old_cm instanceof DirectColorModel) {
DirectColorModel dcm = (DirectColorModel) old_cm;
int old_mask = dcm.getRedMask() | dcm.getGreenMask()
| dcm.getBlueMask() | dcm.getAlphaMask();
int old_bits = count_bits_in_mask(old_mask);
return new DirectColorModel(cs, old_bits, dcm.getRedMask(), dcm
.getGreenMask(), dcm.getBlueMask(), dcm.getAlphaMask(), dcm
.isAlphaPremultiplied(), dcm.getTransferType());
}
// else if (old_cm instanceof PackedColorModel)
// {
// PackedColorModel pcm = (PackedColorModel) old_cm;
//
// // int old_mask = dcm.getRedMask() | dcm.getGreenMask()
// // | dcm.getBlueMask() | dcm.getAlphaMask();
//
// int old_masks[] = pcm.getMasks();
// // System.out.println("old_mask: " + old_mask);
// int old_bits = count_bits_in_mask(old_masks);
// // System.out.println("old_bits: " + old_bits);
//
// // PackedColorModel(ColorSpace space, int bits, int rmask, int gmask,
// int bmask, int amask, boolean isAlphaPremultiplied, int trans, int
// transferType)
// cm = new PackedColorModel(cs, old_bits, pcm.getMasks(),
//
// pcm.isAlphaPremultiplied(), pcm.getTransparency(), pcm
// .getTransferType());
// }
throw new ImagingOpException("Could not clone unknown ColorModel Type.");
}
private int count_bits_in_mask(int i) {
int count = 0;
while (i != 0) {
count += (i & 1);
// uses the unsigned version of java's right shift operator,
// so that left hand bits are zeroed.
i >>>= 1;
}
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);
hints.put(RenderingHints.KEY_DITHERING,
RenderingHints.VALUE_DITHER_ENABLE);
ColorConvertOp op = new ColorConvertOp(from, to, hints);
BufferedImage result = op.filter(bi, null);
result = relabelColorSpace(result, to);
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);
}
protected BufferedImage convertFromColorSpace(BufferedImage bi,
ColorSpace from) {
ColorSpace cs_sRGB;
ColorModel srgbCM = ColorModel.getRGBdefault();
cs_sRGB = srgbCM.getColorSpace();
return convertBetweenColorSpaces(bi, from, cs_sRGB);
}
public BufferedImage convertBetweenICCProfiles(BufferedImage bi,
ICC_Profile from, ICC_Profile to) {
ICC_ColorSpace cs_from = new ICC_ColorSpace(from);
ICC_ColorSpace cs_to = new ICC_ColorSpace(to);
return convertBetweenColorSpaces(bi, cs_from, cs_to);
}
public BufferedImage convertToICCProfile(BufferedImage bi, ICC_Profile to) {
ICC_ColorSpace cs_to = new ICC_ColorSpace(to);
return convertToColorSpace(bi, cs_to);
}
public BufferedImage convertBetweenColorSpacesX2(BufferedImage bi,
ColorSpace from, ColorSpace to) {
RenderingHints hints = new RenderingHints(RenderingHints.KEY_RENDERING,
RenderingHints.VALUE_RENDER_QUALITY);
hints.put(RenderingHints.KEY_COLOR_RENDERING,
RenderingHints.VALUE_COLOR_RENDER_QUALITY);
hints.put(RenderingHints.KEY_DITHERING,
RenderingHints.VALUE_DITHER_ENABLE);
// bi = relabelColorSpace(bi, cs);
// dumpColorSpace("\tcs_sRGB", cs_sRGB);
// dumpColorSpace("\tColorModel.getRGBdefaultc",
// ColorModel.getRGBdefault().getColorSpace());
bi = relabelColorSpace(bi, from);
ColorConvertOp op = new ColorConvertOp(from, to, hints);
bi = op.filter(bi, null);
bi = relabelColorSpace(bi, from);
bi = op.filter(bi, null);
bi = relabelColorSpace(bi, to);
return bi;
}
public BufferedImage convertBetweenColorSpaces(BufferedImage bi,
ColorSpace from, ColorSpace to) {
RenderingHints hints = new RenderingHints(RenderingHints.KEY_RENDERING,
RenderingHints.VALUE_RENDER_QUALITY);
hints.put(RenderingHints.KEY_COLOR_RENDERING,
RenderingHints.VALUE_COLOR_RENDER_QUALITY);
hints.put(RenderingHints.KEY_DITHERING,
RenderingHints.VALUE_DITHER_ENABLE);
ColorConvertOp op = new ColorConvertOp(from, to, hints);
bi = relabelColorSpace(bi, from);
BufferedImage result = op.filter(bi, null);
result = relabelColorSpace(result, to);
return result;
}
}