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/*
* Copyright (c) 2014, Harald Kuhr
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* * Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.twelvemonkeys.imageio.color;
import java.awt.color.ColorSpace;
import java.awt.image.ComponentColorModel;
import java.awt.image.DataBuffer;
/**
* ComponentColorModel subclass that correctly handles full 16 bit {@code TYPE_SHORT} signed integral samples.
**
* @author Harald Kuhr
* @author last modified by $Author: haraldk$
* @version $Id: UInt32ColorModel.java,v 1.0 24.01.11 17.51 haraldk Exp$
*/
public final class Int16ComponentColorModel extends ComponentColorModel {
private final ComponentColorModel delegate;
public Int16ComponentColorModel(final ColorSpace cs, final boolean hasAlpha, boolean isAlphaPremultiplied) {
super(cs, hasAlpha, isAlphaPremultiplied, hasAlpha ? TRANSLUCENT : OPAQUE, DataBuffer.TYPE_SHORT);
delegate = new ComponentColorModel(cs, hasAlpha, isAlphaPremultiplied, hasAlpha ? TRANSLUCENT : OPAQUE, DataBuffer.TYPE_USHORT);
}
private void remap(final short[] s, final int i) {
// MIN ... -1 -> 0 ... MAX
// 0 ... MAX -> MIN ... -1
short sample = s[i];
if (sample < 0) {
s[i] = (short) (sample - Short.MIN_VALUE);
}
else {
s[i] = (short) (sample + Short.MIN_VALUE);
}
}
@Override
public int getRed(final Object inData) {
remap((short[]) inData, 0);
return delegate.getRed(inData);
}
@Override
public int getGreen(final Object inData) {
remap((short[]) inData, 1);
return delegate.getGreen(inData);
}
@Override
public int getBlue(final Object inData) {
remap((short[]) inData, 2);
return delegate.getBlue(inData);
}
}