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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/java/awt/color/ICC_ColorSpace.java | |
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Diffstat (limited to 'libjava/classpath/java/awt/color/ICC_ColorSpace.java')
-rw-r--r-- | libjava/classpath/java/awt/color/ICC_ColorSpace.java | 314 |
1 files changed, 314 insertions, 0 deletions
diff --git a/libjava/classpath/java/awt/color/ICC_ColorSpace.java b/libjava/classpath/java/awt/color/ICC_ColorSpace.java new file mode 100644 index 000000000..ac636fb26 --- /dev/null +++ b/libjava/classpath/java/awt/color/ICC_ColorSpace.java @@ -0,0 +1,314 @@ +/* ICC_ColorSpace.java -- the canonical color space implementation + Copyright (C) 2000, 2002, 2004 Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.color; + +import gnu.java.awt.color.CieXyzConverter; +import gnu.java.awt.color.ClutProfileConverter; +import gnu.java.awt.color.ColorSpaceConverter; +import gnu.java.awt.color.GrayProfileConverter; +import gnu.java.awt.color.GrayScaleConverter; +import gnu.java.awt.color.LinearRGBConverter; +import gnu.java.awt.color.PyccConverter; +import gnu.java.awt.color.RgbProfileConverter; +import gnu.java.awt.color.SrgbConverter; + +import java.io.IOException; +import java.io.ObjectInputStream; + +/** + * ICC_ColorSpace - an implementation of ColorSpace + * + * While an ICC_Profile class abstracts the data in an ICC profile file + * an ICC_ColorSpace performs the color space conversions defined by + * an ICC_Profile instance. + * + * Typically, an ICC_Profile will either be created using getInstance, + * either from the built-in colorspaces, or from an ICC profile file. + * Then a ICC_Colorspace will be used to perform transforms from the + * device colorspace to and from the profile color space. + * + * The PCS used by ColorSpace is CIE XYZ relative a D50 white point. + * (Profiles using a CIE Lab PCS will have their input and output converted + * to D50 CIE XYZ accordingly. + * + * Note that a valid profile may not contain transforms in both directions, + * in which case the output may be undefined. + * All built-in colorspaces have bidirectional transforms, but developers + * using an ICC profile file may want to check the profile class using + * the ICC_Profile.getProfileClass() method. Input class profiles are + * guaranteed to have transforms to the PCS, output class profiles are + * guaranteed to have transforms from the PCS to device space. + * + * @author Sven de Marothy + * @author Rolf W. Rasmussen (rolfwr@ii.uib.no) + * @since 1.2 + */ +public class ICC_ColorSpace extends ColorSpace +{ + /** + * Compatible with JDK 1.2+. + */ + private static final long serialVersionUID = 3455889114070431483L; + + /** + * @serial + */ + private ICC_Profile thisProfile; + + /** + * @serial + */ + private float[] minVal; + + /** + * @serial + */ + private float[] maxVal; + + /** + * @serial + */ + private float[] diffMinMax; + + /** + * @serial + */ + private float[] invDiffMinMax; + + /** + * @serial + */ + private boolean needScaleInit; + + /** + * Tells us if the PCS is CIE LAB (must be CIEXYZ otherwise) + */ + private transient int type; + private transient int nComponents; + private transient ColorSpaceConverter converter; + + /** + * Constructs a new ICC_ColorSpace from an ICC_Profile object. + * + * @exception IllegalArgumentException If profile is inappropriate for + * representing a ColorSpace. + */ + public ICC_ColorSpace(ICC_Profile profile) + { + super(profile.getColorSpaceType(), profile.getNumComponents()); + + converter = getConverter(profile); + thisProfile = profile; + nComponents = profile.getNumComponents(); + type = profile.getColorSpaceType(); + makeArrays(); + } + + /** + * Return the profile + */ + public ICC_Profile getProfile() + { + return thisProfile; + } + + /** + * Transforms a color value assumed to be in this ColorSpace into a value in + * the default CS_sRGB color space. + * + * @exception ArrayIndexOutOfBoundsException If array length is not at least + * the number of components in this ColorSpace. + */ + public float[] toRGB(float[] colorvalue) + { + return converter.toRGB(colorvalue); + } + + /** + * Transforms a color value assumed to be in the default CS_sRGB color space + * into this ColorSpace. + * + * @exception ArrayIndexOutOfBoundsException If array length is not at + * least 3. + */ + public float[] fromRGB(float[] rgbvalue) + { + return converter.fromRGB(rgbvalue); + } + + /** + * Transforms a color value assumed to be in this ColorSpace into the + * CS_CIEXYZ conversion color space. + * + * @exception ArrayIndexOutOfBoundsException If array length is not at + * least the number of components in this ColorSpace. + */ + public float[] toCIEXYZ(float[] colorvalue) + { + return converter.toCIEXYZ(colorvalue); + } + + /** + * Transforms a color value assumed to be in the CS_CIEXYZ conversion color + * space into this ColorSpace. + * + * @exception ArrayIndexOutOfBoundsException If array length is not at + * least 3. + */ + public float[] fromCIEXYZ(float[] colorvalue) + { + return converter.fromCIEXYZ(colorvalue); + } + + public boolean isCS_sRGB() + { + return converter instanceof SrgbConverter; + } + + /** + * Returns the minimum normalized color component value for the specified + * component. + * + * @exception IllegalArgumentException If component is less than 0 or greater + * than numComponents - 1. + * + * @since 1.4 + */ + public float getMinValue(int idx) + { + // FIXME: Not 100% certain of this. + if (type == ColorSpace.TYPE_Lab && (idx == 1 || idx == 2)) + return -128f; + + if (idx < 0 || idx >= nComponents) + throw new IllegalArgumentException(); + return 0; + } + + /** + * Returns the maximum normalized color component value for the specified + * component. + * + * @exception IllegalArgumentException If component is less than 0 or greater + * than numComponents - 1. + * + * @since 1.4 + */ + public float getMaxValue(int idx) + { + if (type == ColorSpace.TYPE_XYZ && idx >= 0 && idx <= 2) + return 1 + 32767 / 32768f; + else if (type == ColorSpace.TYPE_Lab) + { + if (idx == 0) + return 100; + if (idx == 1 || idx == 2) + return 127; + } + if (idx < 0 || idx >= nComponents) + throw new IllegalArgumentException(); + return 1; + } + + /** + * Returns a colorspace converter suitable for a given profile + */ + private ColorSpaceConverter getConverter(ICC_Profile profile) + { + ColorSpaceConverter converter; + switch (profile.isPredefined()) + { + case CS_sRGB: + converter = new SrgbConverter(); + break; + case CS_CIEXYZ: + converter = new CieXyzConverter(); + break; + case CS_GRAY: + converter = new GrayScaleConverter(); + break; + case CS_LINEAR_RGB: + converter = new LinearRGBConverter(); + break; + case CS_PYCC: + converter = new PyccConverter(); + break; + default: + if (profile instanceof ICC_ProfileRGB) + converter = new RgbProfileConverter((ICC_ProfileRGB) profile); + else if (profile instanceof ICC_ProfileGray) + converter = new GrayProfileConverter((ICC_ProfileGray) profile); + else + converter = new ClutProfileConverter(profile); + break; + } + return converter; + } + + /** + * Serialization compatibility requires these variable to be set, + * although we don't use them. Perhaps we should? + */ + private void makeArrays() + { + minVal = new float[nComponents]; + maxVal = new float[nComponents]; + + invDiffMinMax = diffMinMax = null; + for (int i = 0; i < nComponents; i++) + { + minVal[i] = getMinValue(i); + maxVal[i] = getMaxValue(i); + } + needScaleInit = true; + } + + /** + * Deserializes the object + */ + private void readObject(ObjectInputStream s) + throws IOException, ClassNotFoundException + { + s.defaultReadObject(); + // set up objects + converter = getConverter(thisProfile); + nComponents = thisProfile.getNumComponents(); + type = thisProfile.getColorSpaceType(); + } +} // class ICC_ColorSpace |