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Added fast conversion from CMYK to RGB for non-ICC cases.

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Harald Kuhr
2011-02-23 19:16:47 +01:00
parent 38ab0d936a
commit 2d04b8d484
2 changed files with 424 additions and 0 deletions
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imageio/imageio-jpeg/src/test/java/com/twelvemonkeys/imageio/plugins/jpeg/FastCMYKToRGBTest.java
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/*
* Copyright (c) 2011, 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 "TwelveMonkeys" 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 OWNER 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.plugins.jpeg;
import org.junit.Test;
import java.awt.image.BufferedImage;
import java.awt.image.DataBuffer;
import java.awt.image.Raster;
import java.awt.image.WritableRaster;
import java.util.Arrays;
import static org.junit.Assert.*;
/**
* FastCMYKToRGBTest
*
* @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
* @author last modified by $Author: haraldk$
* @version $Id: FastCMYKToRGBTest.java,v 1.0 22.02.11 16.22 haraldk Exp$
*/
public class FastCMYKToRGBTest {
@Test
public void testCreate() {
new FastCMYKToRGB();
}
@Test
public void testConvertByteRGBWhite() {
FastCMYKToRGB convert = new FastCMYKToRGB();
WritableRaster input = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE, 1, 1, 4, null);
WritableRaster result = convert.filter(input, null);
byte[] pixel = (byte[]) result.getDataElements(0, 0, null);
assertNotNull(pixel);
assertEquals(3, pixel.length);
byte[] expected = {(byte) 255, (byte) 255, (byte) 255};
assertTrue(String.format("Was: %s, expected: %s", Arrays.toString(pixel), Arrays.toString(expected)), Arrays.equals(expected, pixel));
}
@Test
public void testConvertIntRGBWhite() {
FastCMYKToRGB convert = new FastCMYKToRGB();
WritableRaster input = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE, 1, 1, 4, null);
WritableRaster result = convert.filter(input, new BufferedImage(1, 1, BufferedImage.TYPE_INT_RGB).getRaster());
int[] pixel = (int[]) result.getDataElements(0, 0, null);
assertNotNull(pixel);
assertEquals(1, pixel.length);
int expected = 0xFFFFFF;
int rgb = pixel[0] & 0xFFFFFF;
assertEquals(String.format("Was: 0x%08x, expected: 0x%08x", rgb, expected), expected, rgb);
}
@Test
public void testConvertByteRGBBlack() {
FastCMYKToRGB convert = new FastCMYKToRGB();
WritableRaster input = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE, 1, 1, 4, null);
WritableRaster result = null;
byte[] pixel = null;
for (int i = 0; i < 255; i++) {
input.setDataElements(0, 0, new byte[] {(byte) i, (byte) (255 - i), (byte) (127 + i), (byte) 255});
result = convert.filter(input, result);
pixel = (byte[]) result.getDataElements(0, 0, pixel);
assertNotNull(pixel);
assertEquals(3, pixel.length);
byte[] expected = {(byte) 0, (byte) 0, (byte) 0};
assertTrue(String.format("Was: %s, expected: %s", Arrays.toString(pixel), Arrays.toString(expected)), Arrays.equals(expected, pixel));
}
}
@Test
public void testConvertIntRGBBlack() {
FastCMYKToRGB convert = new FastCMYKToRGB();
WritableRaster input = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE, 1, 1, 4, null);
WritableRaster result = new BufferedImage(1, 1, BufferedImage.TYPE_INT_RGB).getRaster();
int[] pixel = null;
for (int i = 0; i < 255; i++) {
input.setDataElements(0, 0, new byte[] {(byte) i, (byte) (255 - i), (byte) (127 + i), (byte) 255});
result = convert.filter(input, result);
pixel = (int[]) result.getDataElements(0, 0, pixel);
assertNotNull(pixel);
assertEquals(1, pixel.length);
int expected = 0x0;
int rgb = pixel[0] & 0xFFFFFF;
assertEquals(String.format("Was: 0x%08x, expected: 0x%08x", rgb, expected), expected, rgb);
}
}
@Test
public void testConvertByteRGBColors() {
FastCMYKToRGB convert = new FastCMYKToRGB();
WritableRaster input = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE, 1, 1, 4, null);
WritableRaster result = null;
byte[] pixel = null;
for (int i = 0; i < 255; i++) {
input.setDataElements(0, 0, new byte[] {(byte) i, (byte) (255 - i), (byte) (128 + i), 0});
result = convert.filter(input, result);
pixel = (byte[]) result.getDataElements(0, 0, pixel);
assertNotNull(pixel);
assertEquals(3, pixel.length);
byte[] expected = {(byte) (255 - i), (byte) i, (byte) (127 - i)};
assertTrue(String.format("Was: %s, expected: %s", Arrays.toString(pixel), Arrays.toString(expected)), Arrays.equals(expected, pixel));
}
}
@Test
public void testConvertByteBGRColors() {
FastCMYKToRGB convert = new FastCMYKToRGB();
WritableRaster input = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE, 1, 1, 4, null);
WritableRaster result = null;
byte[] pixel = null;
for (int i = 0; i < 255; i++) {
input.setDataElements(0, 0, new byte[] {(byte) i, (byte) (255 - i), (byte) (128 + i), 0});
result = convert.filter(input, result);
pixel = (byte[]) result.getDataElements(0, 0, pixel);
assertNotNull(pixel);
assertEquals(3, pixel.length);
byte[] expected = {(byte) (255 - i), (byte) i, (byte) (127 - i)};
assertTrue(String.format("Was: %s, expected: %s", Arrays.toString(pixel), Arrays.toString(expected)), Arrays.equals(expected, pixel));
}
}
@Test
public void testConvertByteABGRColors() {
FastCMYKToRGB convert = new FastCMYKToRGB();
WritableRaster input = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE, 1, 1, 4, null);
WritableRaster result = new BufferedImage(1, 1, BufferedImage.TYPE_4BYTE_ABGR).getRaster();
byte[] pixel = null;
for (int i = 0; i < 255; i++) {
input.setDataElements(0, 0, new byte[] {(byte) i, (byte) (255 - i), (byte) (128 + i), 0});
result = convert.filter(input, result);
pixel = (byte[]) result.getDataElements(0, 0, pixel);
assertNotNull(pixel);
assertEquals(4, pixel.length);
byte[] expected = {(byte) (255 - i), (byte) i, (byte) (127 - i), (byte) 0xff};
assertTrue(String.format("Was: %s, expected: %s", Arrays.toString(pixel), Arrays.toString(expected)), Arrays.equals(expected, pixel));
}
}
@Test
public void testConvertIntRGBColors() {
FastCMYKToRGB convert = new FastCMYKToRGB();
WritableRaster input = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE, 1, 1, 4, null);
WritableRaster result = new BufferedImage(1, 1, BufferedImage.TYPE_INT_RGB).getRaster();
int[] pixel = null;
for (int i = 0; i < 255; i++) {
input.setDataElements(0, 0, new byte[] {(byte) i, (byte) (255 - i), (byte) (128 + i), 0});
result = convert.filter(input, result);
pixel = (int[]) result.getDataElements(0, 0, pixel);
assertNotNull(pixel);
assertEquals(1, pixel.length);
int expected = (((byte) (255 - i)) & 0xFF) << 16 | (((byte) i) & 0xFF) << 8 | ((byte) (127 - i)) & 0xFF;
int rgb = pixel[0] & 0xFFFFFF;
assertEquals(String.format("Was: 0x%08x, expected: 0x%08x", rgb, expected), expected, rgb);
}
}
@Test
public void testConvertIntBGRColors() {
FastCMYKToRGB convert = new FastCMYKToRGB();
WritableRaster input = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE, 1, 1, 4, null);
WritableRaster result = new BufferedImage(1, 1, BufferedImage.TYPE_INT_BGR).getRaster();
int[] pixel = null;
for (int i = 0; i < 255; i++) {
input.setDataElements(0, 0, new byte[] {(byte) i, (byte) (255 - i), (byte) (128 + i), 0});
result = convert.filter(input, result);
pixel = (int[]) result.getDataElements(0, 0, pixel);
assertNotNull(pixel);
assertEquals(1, pixel.length);
int expected = (((byte) (127 - i)) & 0xFF) << 16 | (((byte) i) & 0xFF) << 8 | ((byte) (255 - i)) & 0xFF;
int rgb = pixel[0] & 0xFFFFFF;
assertEquals(String.format("Was: 0x%08x, expected: 0x%08x", rgb, expected), expected, rgb);
}
}
@Test
public void testConvertIntARGBColors() {
FastCMYKToRGB convert = new FastCMYKToRGB();
WritableRaster input = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE, 1, 1, 4, null);
WritableRaster result = new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB).getRaster();
int[] pixel = null;
for (int i = 0; i < 255; i++) {
input.setDataElements(0, 0, new byte[]{(byte) i, (byte) (255 - i), (byte) (128 + i), 0});
result = convert.filter(input, result);
pixel = (int[]) result.getDataElements(0, 0, pixel);
assertNotNull(pixel);
assertEquals(1, pixel.length);
int expected = 0xFF << 24 | (((byte) (255 - i)) & 0xFF) << 16 | (((byte) i) & 0xFF) << 8 | ((byte) (127 - i)) & 0xFF;
assertEquals(String.format("Was: 0x%08x, expected: 0x%08x", pixel[0], expected), expected, pixel[0]);
}
}
}