/*
* Copyright (c) 2003, 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.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package com.sun.imageio.plugins.common;
import java.awt.color.ColorSpace;
/**
* A dummy <code>ColorSpace</code> to enable <code>ColorModel</code>
* for image data which do not have an innate color representation.
*/
public class BogusColorSpace extends ColorSpace {
/**
* Return the type given the number of components.
*
* @param numComponents The number of components in the
* <code>ColorSpace</code>.
* @exception IllegalArgumentException if <code>numComponents</code>
* is less than 1.
*/
private static int getType(int numComponents) {
if(numComponents < 1) {
throw new IllegalArgumentException("numComponents < 1!");
}
int type;
switch(numComponents) {
case 1:
type = ColorSpace.TYPE_GRAY;
break;
default:
// Based on the constant definitions TYPE_2CLR=12 through
// TYPE_FCLR=25. This will return unknown types for
// numComponents > 15.
type = numComponents + 10;
}
return type;
}
/**
* Constructs a bogus <code>ColorSpace</code>.
*
* @param numComponents The number of components in the
* <code>ColorSpace</code>.
* @exception IllegalArgumentException if <code>numComponents</code>
* is less than 1.
*/
public BogusColorSpace(int numComponents) {
super(getType(numComponents), numComponents);
}
//
// The following methods simply copy the input array to the
// output array while otherwise attempting to adhere to the
// specified behavior of the methods vis-a-vis exceptions.
//
public float[] toRGB(float[] colorvalue) {
if(colorvalue.length < getNumComponents()) {
throw new ArrayIndexOutOfBoundsException
("colorvalue.length < getNumComponents()");
}
float[] rgbvalue = new float[3];
System.arraycopy(colorvalue, 0, rgbvalue, 0,
Math.min(3, getNumComponents()));
return colorvalue;
}
public float[] fromRGB(float[] rgbvalue) {
if(rgbvalue.length < 3) {
throw new ArrayIndexOutOfBoundsException
("rgbvalue.length < 3");
}
float[] colorvalue = new float[getNumComponents()];
System.arraycopy(rgbvalue, 0, colorvalue, 0,
Math.min(3, colorvalue.length));
return rgbvalue;
}
public float[] toCIEXYZ(float[] colorvalue) {
if(colorvalue.length < getNumComponents()) {
throw new ArrayIndexOutOfBoundsException
("colorvalue.length < getNumComponents()");
}
float[] xyzvalue = new float[3];
System.arraycopy(colorvalue, 0, xyzvalue, 0,
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