JDK8/Java8源码在线阅读
/*
* Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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/*
**********************************************************************
**********************************************************************
**********************************************************************
*** COPYRIGHT (c) Eastman Kodak Company, 1997 ***
*** As an unpublished work pursuant to Title 17 of the United ***
*** States Code. All rights reserved. ***
**********************************************************************
**********************************************************************
**********************************************************************/
package java.awt.image;
import java.awt.Point;
import java.awt.Graphics2D;
import java.awt.color.*;
import sun.java2d.cmm.ColorTransform;
import sun.java2d.cmm.CMSManager;
import sun.java2d.cmm.ProfileDeferralMgr;
import sun.java2d.cmm.PCMM;
import java.awt.geom.Rectangle2D;
import java.awt.geom.Point2D;
import java.awt.RenderingHints;
/**
* This class performs a pixel-by-pixel color conversion of the data in
* the source image. The resulting color values are scaled to the precision
* of the destination image. Color conversion can be specified
* via an array of ColorSpace objects or an array of ICC_Profile objects.
* <p>
* If the source is a BufferedImage with premultiplied alpha, the
* color components are divided by the alpha component before color conversion.
* If the destination is a BufferedImage with premultiplied alpha, the
* color components are multiplied by the alpha component after conversion.
* Rasters are treated as having no alpha channel, i.e. all bands are
* color bands.
* <p>
* If a RenderingHints object is specified in the constructor, the
* color rendering hint and the dithering hint may be used to control
* color conversion.
* <p>
* Note that Source and Destination may be the same object.
* @see java.awt.RenderingHints#KEY_COLOR_RENDERING
* @see java.awt.RenderingHints#KEY_DITHERING
*/
public class ColorConvertOp implements BufferedImageOp, RasterOp {
ICC_Profile[] profileList;
ColorSpace[] CSList;
ColorTransform thisTransform, thisRasterTransform;
ICC_Profile thisSrcProfile, thisDestProfile;
RenderingHints hints;
boolean gotProfiles;
float[] srcMinVals, srcMaxVals, dstMinVals, dstMaxVals;
/* the class initializer */
static {
if (ProfileDeferralMgr.deferring) {
ProfileDeferralMgr.activateProfiles();
}
}
/**
* Constructs a new ColorConvertOp which will convert
* from a source color space to a destination color space.
* The RenderingHints argument may be null.
* This Op can be used only with BufferedImages, and will convert
* directly from the ColorSpace of the source image to that of the
* destination. The destination argument of the filter method
* cannot be specified as null.
* @param hints the <code>RenderingHints</code> object used to control
* the color conversion, or <code>null</code>
*/
public ColorConvertOp (RenderingHints hints)
{
profileList = new ICC_Profile [0]; /* 0 length list */
this.hints = hints;
}
/**
* Constructs a new ColorConvertOp from a ColorSpace object.
* The RenderingHints argument may be null. This
* Op can be used only with BufferedImages, and is primarily useful
* when the {@link #filter(BufferedImage, BufferedImage) filter}
* method is invoked with a destination argument of null.
* In that case, the ColorSpace defines the destination color space
* for the destination created by the filter method. Otherwise, the
* ColorSpace defines an intermediate space to which the source is
* converted before being converted to the destination space.
* @param cspace defines the destination <code>ColorSpace</code> or an
* intermediate <code>ColorSpace</code>
* @param hints the <code>RenderingHints</code> object used to control
* the color conversion, or <code>null</code>
* @throws NullPointerException if cspace is null
*/
public ColorConvertOp (ColorSpace cspace, RenderingHints hints)
{
if (cspace == null) {
throw new NullPointerException("ColorSpace cannot be null");
}
if (cspace instanceof ICC_ColorSpace) {
profileList = new ICC_Profile [1]; /* 1 profile in the list */
profileList [0] = ((ICC_ColorSpace) cspace).getProfile();
}
else {
CSList = new ColorSpace[1]; /* non-ICC case: 1 ColorSpace in list */
CSList[0] = cspace;
}
this.hints = hints;
}
/**
* Constructs a new ColorConvertOp from two ColorSpace objects.
* The RenderingHints argument may be null.
* This Op is primarily useful for calling the filter method on
* Rasters, in which case the two ColorSpaces define the operation
* to be performed on the Rasters. In that case, the number of bands
* in the source Raster must match the number of components in
* srcCspace, and the number of bands in the destination Raster
* must match the number of components in dstCspace. For BufferedImages,
* the two ColorSpaces define intermediate spaces through which the
* source is converted before being converted to the destination space.
* @param srcCspace the source <code>ColorSpace</code>
* @param dstCspace the destination <code>ColorSpace</code>
* @param hints the <code>RenderingHints</code> object used to control
* the color conversion, or <code>null</code>
* @throws NullPointerException if either srcCspace or dstCspace is null
*/
public ColorConvertOp(ColorSpace srcCspace, ColorSpace dstCspace,
RenderingHints hints)
{
if ((srcCspace == null) || (dstCspace == null)) {
throw new NullPointerException("ColorSpaces cannot be null");
}
if ((srcCspace instanceof ICC_ColorSpace) &&
(dstCspace instanceof ICC_ColorSpace)) {
profileList = new ICC_Profile [2]; /* 2 profiles in the list */
profileList [0] = ((ICC_ColorSpace) srcCspace).getProfile();
profileList [1] = ((ICC_ColorSpace) dstCspace).getProfile();
getMinMaxValsFromColorSpaces(srcCspace, dstCspace);
} else {
/* non-ICC case: 2 ColorSpaces in list */
CSList = new ColorSpace[2];
CSList[0] = srcCspace;
CSList[1] = dstCspace;
}
this.hints = hints;
}
/**
* Constructs a new ColorConvertOp from an array of ICC_Profiles.
* The RenderingHints argument may be null.
* The sequence of profiles may include profiles that represent color
* spaces, profiles that represent effects, etc. If the whole sequence
* does not represent a well-defined color conversion, an exception is
* thrown.
* <p>For BufferedImages, if the ColorSpace
* of the source BufferedImage does not match the requirements of the
* first profile in the array,
* the first conversion is to an appropriate ColorSpace.
* If the requirements of the last profile in the array are not met
* by the ColorSpace of the destination BufferedImage,
* the last conversion is to the destination's ColorSpace.
* <p>For Rasters, the number of bands in the source Raster must match
* the requirements of the first profile in the array, and the
* number of bands in the destination Raster must match the requirements
* of the last profile in the array. The array must have at least two
* elements or calling the filter method for Rasters will throw an
* IllegalArgumentException.
* @param profiles the array of <code>ICC_Profile</code> objects
* @param hints the <code>RenderingHints</code> object used to control
* the color conversion, or <code>null</code>
* @exception IllegalArgumentException when the profile sequence does not
* specify a well-defined color conversion
* @exception NullPointerException if profiles is null
*/
public ColorConvertOp (ICC_Profile[] profiles, RenderingHints hints)
{
if (profiles == null) {
throw new NullPointerException("Profiles cannot be null");
}
gotProfiles = true;
profileList = new ICC_Profile[profiles.length];
for (int i1 = 0; i1 < profiles.length; i1++) {
profileList[i1] = profiles[i1];
}
this.hints = hints;
}
/**
* Returns the array of ICC_Profiles used to construct this ColorConvertOp.
* Returns null if the ColorConvertOp was not constructed from such an
* array.
* @return the array of <code>ICC_Profile</code> objects of this
* <code>ColorConvertOp</code>, or <code>null</code> if this
* <code>ColorConvertOp</code> was not constructed with an
* array of <code>ICC_Profile</code> objects.
*/
public final ICC_Profile[] getICC_Profiles() {
if (gotProfiles) {
ICC_Profile[] profiles = new ICC_Profile[profileList.length];
for (int i1 = 0; i1 < profileList.length; i1++) {
profiles[i1] = profileList[i1];
}
return profiles;
}
return null;
}
/**
* ColorConverts the source BufferedImage.
* If the destination image is null,
* a BufferedImage will be created with an appropriate ColorModel.
* @param src the source <code>BufferedImage</code> to be converted
* @param dest the destination <code>BufferedImage</code>,
* or <code>null</code>
* @return <code>dest</code> color converted from <code>src</code>
* or a new, converted <code>BufferedImage</code>
* if <code>dest</code> is <code>null</code>
* @exception IllegalArgumentException if dest is null and this op was
* constructed using the constructor which takes only a
* RenderingHints argument, since the operation is ill defined.
*/
public final BufferedImage filter(BufferedImage src, BufferedImage dest) {
ColorSpace srcColorSpace, destColorSpace;
BufferedImage savdest = null;
if (src.getColorModel() instanceof IndexColorModel) {
IndexColorModel icm = (IndexColorModel) src.getColorModel();
src = icm.convertToIntDiscrete(src.getRaster(), true);
}
srcColorSpace = src.getColorModel().getColorSpace();
if (dest != null) {
if (dest.getColorModel() instanceof IndexColorModel) {
savdest = dest;
dest = null;
destColorSpace = null;
} else {
destColorSpace = dest.getColorModel().getColorSpace();
}
} else {
destColorSpace = null;
}
if ((CSList != null) ||
(!(srcColorSpace instanceof ICC_ColorSpace)) ||
((dest != null) &&
(!(destColorSpace instanceof ICC_ColorSpace)))) {
/* non-ICC case */
dest = nonICCBIFilter(src, srcColorSpace, dest, destColorSpace);
} else {
dest = ICCBIFilter(src, srcColorSpace, dest, destColorSpace);
}
if (savdest != null) {
Graphics2D big = savdest.createGraphics();
try {
big.drawImage(dest, 0, 0, null);
} finally {
big.dispose();
}
return savdest;
} else {
return dest;
}
}
private final BufferedImage ICCBIFilter(BufferedImage src,
ColorSpace srcColorSpace,
BufferedImage dest,
ColorSpace destColorSpace) {
int nProfiles = profileList.length;
ICC_Profile srcProfile = null, destProfile = null;
srcProfile = ((ICC_ColorSpace) srcColorSpace).getProfile();
if (dest == null) { /* last profile in the list defines
the output color space */
if (nProfiles == 0) {
throw new IllegalArgumentException(
"Destination ColorSpace is undefined");
}
destProfile = profileList [nProfiles - 1];
dest = createCompatibleDestImage(src, null);
}
else {
if (src.getHeight() != dest.getHeight() ||
src.getWidth() != dest.getWidth()) {
throw new IllegalArgumentException(
"Width or height of BufferedImages do not match");
}
destProfile = ((ICC_ColorSpace) destColorSpace).getProfile();
}
/* Checking if all profiles in the transform sequence are the same.
* If so, performing just copying the data.
*/
if (srcProfile == destProfile) {
boolean noTrans = true;
for (int i = 0; i < nProfiles; i++) {
if (srcProfile != profileList[i]) {
noTrans = false;
break;
}
}
if (noTrans) {
Graphics2D g = dest.createGraphics();
try {
g.drawImage(src, 0, 0, null);
} finally {
g.dispose();
}
return dest;
}
}
/* make a new transform if needed */
if ((thisTransform == null) || (thisSrcProfile != srcProfile) ||
(thisDestProfile != destProfile) ) {
updateBITransform(srcProfile, destProfile);
}
/* color convert the image */
thisTransform.colorConvert(src, dest);
return dest;
}
private void updateBITransform(ICC_Profile srcProfile,
ICC_Profile destProfile) {
ICC_Profile[] theProfiles;
int i1, nProfiles, nTransforms, whichTrans, renderState;
ColorTransform[] theTransforms;
boolean useSrc = false, useDest = false;
nProfiles = profileList.length;
nTransforms = nProfiles;
if ((nProfiles == 0) || (srcProfile != profileList[0])) {
nTransforms += 1;
useSrc = true;
}
if ((nProfiles == 0) || (destProfile != profileList[nProfiles - 1]) ||
(nTransforms < 2)) {
nTransforms += 1;
useDest = true;
}
/* make the profile list */
theProfiles = new ICC_Profile[nTransforms]; /* the list of profiles
for this Op */
int idx = 0;
if (useSrc) {
/* insert source as first profile */
theProfiles[idx++] = srcProfile;
}
for (i1 = 0; i1 < nProfiles; i1++) {
/* insert profiles defined in this Op */
theProfiles[idx++] = profileList [i1];
}
if (useDest) {
/* insert dest as last profile */
theProfiles[idx] = destProfile;
}
/* make the transform list */
theTransforms = new ColorTransform [nTransforms];
/* initialize transform get loop */
if (theProfiles[0].getProfileClass() == ICC_Profile.CLASS_OUTPUT) {
/* if first profile is a printer
render as colorimetric */
renderState = ICC_Profile.icRelativeColorimetric;
}
else {
renderState = ICC_Profile.icPerceptual; /* render any other
class perceptually */
}
whichTrans = ColorTransform.In;
PCMM mdl = CMSManager.getModule();
/* get the transforms from each profile */
for (i1 = 0; i1 < nTransforms; i1++) {
if (i1 == nTransforms -1) { /* last profile? */
whichTrans = ColorTransform.Out; /* get output transform */
}
else { /* check for abstract profile */
if ((whichTrans == ColorTransform.Simulation) &&
(theProfiles[i1].getProfileClass () ==
ICC_Profile.CLASS_ABSTRACT)) {
renderState = ICC_Profile.icPerceptual;
whichTrans = ColorTransform.In;
}
}
theTransforms[i1] = mdl.createTransform (
theProfiles[i1], renderState, whichTrans);
/* get this profile's rendering intent to select transform
from next profile */
renderState = getRenderingIntent(theProfiles[i1]);
/* "middle" profiles use simulation transform */
whichTrans = ColorTransform.Simulation;
}
/* make the net transform */
thisTransform = mdl.createTransform(theTransforms);
/* update corresponding source and dest profiles */
thisSrcProfile = srcProfile;
thisDestProfile = destProfile;
}
/**
* ColorConverts the image data in the source Raster.
* If the destination Raster is null, a new Raster will be created.
* The number of bands in the source and destination Rasters must
* meet the requirements explained above. The constructor used to
* create this ColorConvertOp must have provided enough information
* to define both source and destination color spaces. See above.
* Otherwise, an exception is thrown.
* @param src the source <code>Raster</code> to be converted
* @param dest the destination <code>WritableRaster</code>,
* or <code>null</code>
* @return <code>dest</code> color converted from <code>src</code>
* or a new, converted <code>WritableRaster</code>
* if <code>dest</code> is <code>null</code>
* @exception IllegalArgumentException if the number of source or
* destination bands is incorrect, the source or destination
* color spaces are undefined, or this op was constructed
* with one of the constructors that applies only to
* operations on BufferedImages.
*/
public final WritableRaster filter (Raster src, WritableRaster dest) {
if (CSList != null) {
/* non-ICC case */
return nonICCRasterFilter(src, dest);
}
int nProfiles = profileList.length;
if (nProfiles < 2) {
throw new IllegalArgumentException(
"Source or Destination ColorSpace is undefined");
}
if (src.getNumBands() != profileList[0].getNumComponents()) {
throw new IllegalArgumentException(
"Numbers of source Raster bands and source color space " +
"components do not match");
}
if (dest == null) {
dest = createCompatibleDestRaster(src);
}
else {
if (src.getHeight() != dest.getHeight() ||
src.getWidth() != dest.getWidth()) {
throw new IllegalArgumentException(
"Width or height of Rasters do not match");
}
if (dest.getNumBands() !=
profileList[nProfiles-1].getNumComponents()) {
throw new IllegalArgumentException(
"Numbers of destination Raster bands and destination " +
"color space components do not match");
}
}
/* make a new transform if needed */
if (thisRasterTransform == null) {
int i1, whichTrans, renderState;
ColorTransform[] theTransforms;
/* make the transform list */
theTransforms = new ColorTransform [nProfiles];
/* initialize transform get loop */
if (profileList[0].getProfileClass() == ICC_Profile.CLASS_OUTPUT) {
/* if first profile is a printer
render as colorimetric */
renderState = ICC_Profile.icRelativeColorimetric;
}
else {
renderState = ICC_Profile.icPerceptual; /* render any other
class perceptually */
}
whichTrans = ColorTransform.In;
PCMM mdl = CMSManager.getModule();
/* get the transforms from each profile */
for (i1 = 0; i1 < nProfiles; i1++) {
if (i1 == nProfiles -1) { /* last profile? */
whichTrans = ColorTransform.Out; /* get output transform */
}
else { /* check for abstract profile */
if ((whichTrans == ColorTransform.Simulation) &&
(profileList[i1].getProfileClass () ==
ICC_Profile.CLASS_ABSTRACT)) {
renderState = ICC_Profile.icPerceptual;
whichTrans = ColorTransform.In;
}
}
theTransforms[i1] = mdl.createTransform (
profileList[i1], renderState, whichTrans);
/* get this profile's rendering intent to select transform
from next profile */
renderState = getRenderingIntent(profileList[i1]);
/* "middle" profiles use simulation transform */
whichTrans = ColorTransform.Simulation;
}
/* make the net transform */
thisRasterTransform = mdl.createTransform(theTransforms);
}
int srcTransferType = src.getTransferType();
int dstTransferType = dest.getTransferType();
if ((srcTransferType == DataBuffer.TYPE_FLOAT) ||
(srcTransferType == DataBuffer.TYPE_DOUBLE) ||
(dstTransferType == DataBuffer.TYPE_FLOAT) ||
(dstTransferType == DataBuffer.TYPE_DOUBLE)) {
if (srcMinVals == null) {
getMinMaxValsFromProfiles(profileList[0],
profileList[nProfiles-1]);
}
/* color convert the raster */
thisRasterTransform.colorConvert(src, dest,
srcMinVals, srcMaxVals,
dstMinVals, dstMaxVals);
} else {
/* color convert the raster */
thisRasterTransform.colorConvert(src, dest);
}
return dest;
}
/**
* Returns the bounding box of the destination, given this source.
* Note that this will be the same as the the bounding box of the
* source.
* @param src the source <code>BufferedImage</code>
* @return a <code>Rectangle2D</code> that is the bounding box
* of the destination, given the specified <code>src</code>
*/
public final Rectangle2D getBounds2D (BufferedImage src) {
return getBounds2D(src.getRaster());
}
/**
* Returns the bounding box of the destination, given this source.
* Note that this will be the same as the the bounding box of the
* source.
* @param src the source <code>Raster</code>
* @return a <code>Rectangle2D</code> that is the bounding box
* of the destination, given the specified <code>src</code>
*/
public final Rectangle2D getBounds2D (Raster src) {
/* return new Rectangle (src.getXOffset(),
src.getYOffset(),
src.getWidth(), src.getHeight()); */
return src.getBounds();
}
/**
* Creates a zeroed destination image with the correct size and number of
* bands, given this source.
* @param src Source image for the filter operation.
* @param destCM ColorModel of the destination. If null, an
* appropriate ColorModel will be used.
* @return a <code>BufferedImage</code> with the correct size and
* number of bands from the specified <code>src</code>.
* @throws IllegalArgumentException if <code>destCM</code> is
* <code>null</code> and this <code>ColorConvertOp</code> was
* created without any <code>ICC_Profile</code> or
* <code>ColorSpace</code> defined for the destination
*/
public BufferedImage createCompatibleDestImage (BufferedImage src,
ColorModel destCM) {
ColorSpace cs = null;;
if (destCM == null) {
if (CSList == null) {
/* ICC case */
int nProfiles = profileList.length;
if (nProfiles == 0) {
throw new IllegalArgumentException(
"Destination ColorSpace is undefined");
}
ICC_Profile destProfile = profileList[nProfiles - 1];
cs = new ICC_ColorSpace(destProfile);
} else {
/* non-ICC case */
int nSpaces = CSList.length;
cs = CSList[nSpaces - 1];
}
}
return createCompatibleDestImage(src, destCM, cs);
}
private BufferedImage createCompatibleDestImage(BufferedImage src,
ColorModel destCM,
ColorSpace destCS) {
BufferedImage image;
if (destCM == null) {
ColorModel srcCM = src.getColorModel();
int nbands = destCS.getNumComponents();
boolean hasAlpha = srcCM.hasAlpha();
if (hasAlpha) {
nbands += 1;
}
int[] nbits = new int[nbands];
for (int i = 0; i < nbands; i++) {
nbits[i] = 8;
}
destCM = new ComponentColorModel(destCS, nbits, hasAlpha,
srcCM.isAlphaPremultiplied(),
srcCM.getTransparency(),
DataBuffer.TYPE_BYTE);
}
int w = src.getWidth();
int h = src.getHeight();
image = new BufferedImage(destCM,
destCM.createCompatibleWritableRaster(w, h),
destCM.isAlphaPremultiplied(), null);
return image;
}
/**
* Creates a zeroed destination Raster with the correct size and number of
* bands, given this source.
* @param src the specified <code>Raster</code>
* @return a <code>WritableRaster</code> with the correct size and number
* of bands from the specified <code>src</code>
* @throws IllegalArgumentException if this <code>ColorConvertOp</code>
* was created without sufficient information to define the
* <code>dst</code> and <code>src</code> color spaces
*/
public WritableRaster createCompatibleDestRaster (Raster src) {
int ncomponents;
if (CSList != null) {
/* non-ICC case */
if (CSList.length != 2) {
throw new IllegalArgumentException(
"Destination ColorSpace is undefined");
}
ncomponents = CSList[1].getNumComponents();
} else {
/* ICC case */
int nProfiles = profileList.length;
if (nProfiles < 2) {
throw new IllegalArgumentException(
"Destination ColorSpace is undefined");
}
ncomponents = profileList[nProfiles-1].getNumComponents();
}
WritableRaster dest =
Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE,
src.getWidth(),
src.getHeight(),
ncomponents,
new Point(src.getMinX(), src.getMinY()));
return dest;
}
/**
* Returns the location of the destination point given a
* point in the source. If <code>dstPt</code> is non-null,
* it will be used to hold the return value. Note that
* for this class, the destination point will be the same
* as the source point.
* @param srcPt the specified source <code>Point2D</code>
* @param dstPt the destination <code>Point2D</code>
* @return <code>dstPt</code> after setting its location to be
* the same as <code>srcPt</code>
*/
public final Point2D getPoint2D (Point2D srcPt, Point2D dstPt) {
if (dstPt == null) {
dstPt = new Point2D.Float();
}
dstPt.setLocation(srcPt.getX(), srcPt.getY());
return dstPt;
}
/**
* Returns the RenderingIntent from the specified ICC Profile.
*/
private int getRenderingIntent (ICC_Profile profile) {
byte[] header = profile.getData(ICC_Profile.icSigHead);
int index = ICC_Profile.icHdrRenderingIntent;
/* According to ICC spec, only the least-significant 16 bits shall be
* used to encode the rendering intent. The most significant 16 bits
* shall be set to zero. Thus, we are ignoring two most significant
* bytes here.
*
* See http://www.color.org/ICC1v42_2006-05.pdf, section 7.2.15.
*/
return ((header[index+2] & 0xff) << 8) |
(header[index+3] & 0xff);
}
/**
* Returns the rendering hints used by this op.
* @return the <code>RenderingHints</code> object of this
* <code>ColorConvertOp</code>
*/
public final RenderingHints getRenderingHints() {
return hints;
}
private final BufferedImage nonICCBIFilter(BufferedImage src,
ColorSpace srcColorSpace,
BufferedImage dst,
ColorSpace dstColorSpace) {
int w = src.getWidth();
int h = src.getHeight();
ICC_ColorSpace ciespace =
(ICC_ColorSpace) ColorSpace.getInstance(ColorSpace.CS_CIEXYZ);
if (dst == null) {
dst = createCompatibleDestImage(src, null);
dstColorSpace = dst.getColorModel().getColorSpace();
} else {
if ((h != dst.getHeight()) || (w != dst.getWidth())) {
throw new IllegalArgumentException(
"Width or height of BufferedImages do not match");
}
}
Raster srcRas = src.getRaster();
WritableRaster dstRas = dst.getRaster();
ColorModel srcCM = src.getColorModel();
ColorModel dstCM = dst.getColorModel();
int srcNumComp = srcCM.getNumColorComponents();
int dstNumComp = dstCM.getNumColorComponents();
boolean dstHasAlpha = dstCM.hasAlpha();
boolean needSrcAlpha = srcCM.hasAlpha() && dstHasAlpha;
ColorSpace[] list;
if ((CSList == null) && (profileList.length != 0)) {
/* possible non-ICC src, some profiles, possible non-ICC dst */
boolean nonICCSrc, nonICCDst;
ICC_Profile srcProfile, dstProfile;
if (!(srcColorSpace instanceof ICC_ColorSpace)) {
nonICCSrc = true;
srcProfile = ciespace.getProfile();
} else {
nonICCSrc = false;
srcProfile = ((ICC_ColorSpace) srcColorSpace).getProfile();
}
if (!(dstColorSpace instanceof ICC_ColorSpace)) {
nonICCDst = true;
dstProfile = ciespace.getProfile();
} else {
nonICCDst = false;
dstProfile = ((ICC_ColorSpace) dstColorSpace).getProfile();
}
/* make a new transform if needed */
if ((thisTransform == null) || (thisSrcProfile != srcProfile) ||
(thisDestProfile != dstProfile) ) {
updateBITransform(srcProfile, dstProfile);
}
// process per scanline
float maxNum = 65535.0f; // use 16-bit precision in CMM
ColorSpace cs;
int iccSrcNumComp;
if (nonICCSrc) {
cs = ciespace;
iccSrcNumComp = 3;
} else {
cs = srcColorSpace;
iccSrcNumComp = srcNumComp;
}
float[] srcMinVal = new float[iccSrcNumComp];
float[] srcInvDiffMinMax = new float[iccSrcNumComp];
for (int i = 0; i < srcNumComp; i++) {
srcMinVal[i] = cs.getMinValue(i);
srcInvDiffMinMax[i] = maxNum / (cs.getMaxValue(i) - srcMinVal[i]);
}
int iccDstNumComp;
if (nonICCDst) {
cs = ciespace;
iccDstNumComp = 3;
} else {
cs = dstColorSpace;
iccDstNumComp = dstNumComp;
}
float[] dstMinVal = new float[iccDstNumComp];
float[] dstDiffMinMax = new float[iccDstNumComp];
for (int i = 0; i < dstNumComp; i++) {
dstMinVal[i] = cs.getMinValue(i);
dstDiffMinMax[i] = (cs.getMaxValue(i) - dstMinVal[i]) / maxNum;
}
float[] dstColor;
if (dstHasAlpha) {
int size = ((dstNumComp + 1) > 3) ? (dstNumComp + 1) : 3;
dstColor = new float[size];
} else {
int size = (dstNumComp > 3) ? dstNumComp : 3;
dstColor = new float[size];
}
short[] srcLine = new short[w * iccSrcNumComp];
short[] dstLine = new short[w * iccDstNumComp];
Object pixel;
float[] color;
float[] alpha = null;
if (needSrcAlpha) {
alpha = new float[w];
}
int idx;
// process each scanline
for (int y = 0; y < h; y++) {
// convert src scanline
pixel = null;
color = null;
idx = 0;
for (int x = 0; x < w; x++) {
pixel = srcRas.getDataElements(x, y, pixel);
color = srcCM.getNormalizedComponents(pixel, color, 0);
if (needSrcAlpha) {
alpha[x] = color[srcNumComp];
}
if (nonICCSrc) {
color = srcColorSpace.toCIEXYZ(color);
}
for (int i = 0; i < iccSrcNumComp; i++) {
srcLine[idx++] = (short)
((color[i] - srcMinVal[i]) * srcInvDiffMinMax[i] +
0.5f);
}
}
// color convert srcLine to dstLine
thisTransform.colorConvert(srcLine, dstLine);
// convert dst scanline
pixel = null;
idx = 0;
for (int x = 0; x < w; x++) {
for (int i = 0; i < iccDstNumComp; i++) {
dstColor[i] = ((float) (dstLine[idx++] & 0xffff)) *
dstDiffMinMax[i] + dstMinVal[i];
}
if (nonICCDst) {
color = srcColorSpace.fromCIEXYZ(dstColor);
for (int i = 0; i < dstNumComp; i++) {
dstColor[i] = color[i];
}
}
if (needSrcAlpha) {
dstColor[dstNumComp] = alpha[x];
} else if (dstHasAlpha) {
dstColor[dstNumComp] = 1.0f;
}
pixel = dstCM.getDataElements(dstColor, 0, pixel);
dstRas.setDataElements(x, y, pixel);
}
}
} else {
/* possible non-ICC src, possible CSList, possible non-ICC dst */
// process per pixel
int numCS;
if (CSList == null) {
numCS = 0;
} else {
numCS = CSList.length;
}
float[] dstColor;
if (dstHasAlpha) {
dstColor = new float[dstNumComp + 1];
} else {
dstColor = new float[dstNumComp];
}
Object spixel = null;
Object dpixel = null;
float[] color = null;
float[] tmpColor;
// process each pixel
for (int y = 0; y < h; y++) {
for (int x = 0; x < w; x++) {
spixel = srcRas.getDataElements(x, y, spixel);
color = srcCM.getNormalizedComponents(spixel, color, 0);
tmpColor = srcColorSpace.toCIEXYZ(color);
for (int i = 0; i < numCS; i++) {
tmpColor = CSList[i].fromCIEXYZ(tmpColor);
tmpColor = CSList[i].toCIEXYZ(tmpColor);
}
tmpColor = dstColorSpace.fromCIEXYZ(tmpColor);
for (int i = 0; i < dstNumComp; i++) {
dstColor[i] = tmpColor[i];
}
if (needSrcAlpha) {
dstColor[dstNumComp] = color[srcNumComp];
} else if (dstHasAlpha) {
dstColor[dstNumComp] = 1.0f;
}
dpixel = dstCM.getDataElements(dstColor, 0, dpixel);
dstRas.setDataElements(x, y, dpixel);
}
}
}
return dst;
}
/* color convert a Raster - handles byte, ushort, int, short, float,
or double transferTypes */
private final WritableRaster nonICCRasterFilter(Raster src,
WritableRaster dst) {
if (CSList.length != 2) {
throw new IllegalArgumentException(
"Destination ColorSpace is undefined");
}
if (src.getNumBands() != CSList[0].getNumComponents()) {
throw new IllegalArgumentException(
"Numbers of source Raster bands and source color space " +
"components do not match");
}
if (dst == null) {
dst = createCompatibleDestRaster(src);
} else {
if (src.getHeight() != dst.getHeight() ||
src.getWidth() != dst.getWidth()) {
throw new IllegalArgumentException(
"Width or height of Rasters do not match");
}
if (dst.getNumBands() != CSList[1].getNumComponents()) {
throw new IllegalArgumentException(
"Numbers of destination Raster bands and destination " +
"color space components do not match");
}
}
if (srcMinVals == null) {
getMinMaxValsFromColorSpaces(CSList[0], CSList[1]);
}
SampleModel srcSM = src.getSampleModel();
SampleModel dstSM = dst.getSampleModel();
boolean srcIsFloat, dstIsFloat;
int srcTransferType = src.getTransferType();
int dstTransferType = dst.getTransferType();
if ((srcTransferType == DataBuffer.TYPE_FLOAT) ||
(srcTransferType == DataBuffer.TYPE_DOUBLE)) {
srcIsFloat = true;
} else {
srcIsFloat = false;
}
if ((dstTransferType == DataBuffer.TYPE_FLOAT) ||
(dstTransferType == DataBuffer.TYPE_DOUBLE)) {
dstIsFloat = true;
} else {
dstIsFloat = false;
}
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