/* filterImage.java -- some checks for the filter(Image) method of the
ConvolveOp class.
Copyright (C) 2006 Francis Kung <fkung@redhat.com>
This file is part of Mauve.
Mauve 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.
Mauve 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 Mauve; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA.
*/
// Tags: JDK1.2
package gnu.testlet.java.awt.image.LookupOp;
import gnu.testlet.TestHarness;
import gnu.testlet.Testlet;
import java.awt.image.BufferedImage;
import java.awt.image.ByteLookupTable;
import java.awt.image.ConvolveOp;
import java.awt.image.LookupOp;
import java.awt.image.ShortLookupTable;
import java.awt.image.WritableRaster;
/**
* Checks the filter(BufferedImage) method in the {@link ConvolveOp} class.
*/
public class filterImage implements Testlet
{
/**
* Runs the test using the specified harness.
*
* @param harness the test harness (<code>null</code> not permitted).
*/
public void test(TestHarness harness)
{
testDefaults(harness);
// Test lookup with only one lookup array: all colour components, but not
// alpha component, should be operated on
testOneLookup(harness, false);
testOneLookup(harness, true);
// Test lookup with num lookup arrays == num colour components, so alpha
// component should be left alone
testColourLookup(harness, false);
testColourLookup(harness, true);
// Test lookup with num lookup arrays == num components including alpha
testAllLookup(harness, false);
testAllLookup(harness, true);
// Test behaviour when pixel value is not defined in lookup table
testUndefined(harness);
}
private void testDefaults(TestHarness harness)
{
harness.checkPoint("testDefaults");
// Create an image to work on
BufferedImage img = new BufferedImage(20, 20, BufferedImage.TYPE_USHORT_GRAY);
byte[] bytes = new byte[] {(byte) 0xAA, (byte) 0xBB};
ByteLookupTable t = new ByteLookupTable(0, bytes);
LookupOp op = new LookupOp(t, null);
// Simple tests
BufferedImage dst = op.filter(img, null);
harness.check(dst.getType(), op.createCompatibleDestImage(img, null).getType());
dst = new BufferedImage(20, 20, BufferedImage.TYPE_USHORT_GRAY);
try
{
dst = op.filter(img, dst);
harness.check(true);
}
catch (IllegalArgumentException ex)
{
harness.check(false);
}
// Src and dst images can be the same
try
{
op.filter(img, img);
harness.check(true);
}
catch (IllegalArgumentException e)
{
harness.check(false);
}
finally
{
// Reset image for next test
img = new BufferedImage(20, 20, BufferedImage.TYPE_USHORT_GRAY);
}
// Src and dst are different sizes - not allowed
dst = new BufferedImage(30, 40, BufferedImage.TYPE_USHORT_GRAY);
try
{
op.filter(img, dst);
harness.check(false);
}
catch (IllegalArgumentException e)
{
harness.check(true);
}
// Src and dst have different tpyes (allowed)
dst = new BufferedImage(20, 20, BufferedImage.TYPE_BYTE_GRAY);
try
{
op.filter(img, dst);
harness.check(true);
}
catch (IllegalArgumentException e)
{
harness.check(false);
}
// src and dst can even have different number of bands
dst = new BufferedImage(20, 20, BufferedImage.TYPE_INT_ARGB);
try
{
op.filter(img, dst);
harness.check(true);
harness.check(img.getType(), BufferedImage.TYPE_USHORT_GRAY);
harness.check(dst.getType(), BufferedImage.TYPE_INT_ARGB);
}
catch (IllegalArgumentException ex)
{
harness.check(false);
}
}
private void testOneLookup(TestHarness harness, boolean premultiply)
{
if (premultiply)
harness.checkPoint("testOneLookup with premultiply");
else
harness.checkPoint("testOneLookup without premultiply");
// Create an image to work on
BufferedImage img;
if (premultiply)
img = new BufferedImage(5, 5, BufferedImage.TYPE_INT_ARGB_PRE);
else
img = new BufferedImage(5, 5, BufferedImage.TYPE_INT_ARGB);
createImage(img);
byte[] bytes = new byte[] {12, 23, 14, 35, 48, 2};
ByteLookupTable t = new ByteLookupTable(0, bytes);
LookupOp op = new LookupOp(t, null);
BufferedImage dst = new BufferedImage(5, 5, BufferedImage.TYPE_INT_ARGB);
dst = op.filter(img, dst);
WritableRaster dest = dst.getRaster();
harness.check(img.isAlphaPremultiplied(), premultiply);
harness.check(dst.isAlphaPremultiplied(), false);
harness.check(dest.getSample(0, 0, 0), 23);
harness.check(dest.getSample(1, 0, 0), 35);
harness.check(dest.getSample(2, 0, 0), 23);
harness.check(dest.getSample(3, 0, 0), 35);
harness.check(dest.getSample(4, 0, 0), 23);
harness.check(dest.getSample(0, 1, 0), 48);
harness.check(dest.getSample(1, 1, 0), 14);
harness.check(dest.getSample(2, 1, 0), 48);
harness.check(dest.getSample(3, 1, 0), 14);
harness.check(dest.getSample(4, 1, 0), 48);
harness.check(dest.getSample(0, 2, 0), 23);
harness.check(dest.getSample(1, 2, 0), 35);
harness.check(dest.getSample(2, 2, 0), 23);
harness.check(dest.getSample(3, 2, 0), 35);
harness.check(dest.getSample(4, 2, 0), 23);
harness.check(dest.getSample(0, 3, 0), 48);
harness.check(dest.getSample(1, 3, 0), 14);
harness.check(dest.getSample(2, 3, 0), 48);
harness.check(dest.getSample(3, 3, 0), 14);
harness.check(dest.getSample(4, 3, 0), 48);
harness.check(dest.getSample(0, 4, 0), 23);
harness.check(dest.getSample(1, 4, 0), 35);
harness.check(dest.getSample(2, 4, 0), 23);
harness.check(dest.getSample(3, 4, 0), 35);
harness.check(dest.getSample(4, 4, 0), 23);
harness.check(dest.getSample(0, 0, 1), 12);
harness.check(dest.getSample(1, 0, 1), 48);
harness.check(dest.getSample(2, 0, 1), 12);
harness.check(dest.getSample(3, 0, 1), 48);
harness.check(dest.getSample(4, 0, 1), 12);
harness.check(dest.getSample(0, 1, 1), 35);
harness.check(dest.getSample(1, 1, 1), 23);
harness.check(dest.getSample(2, 1, 1), 35);
harness.check(dest.getSample(3, 1, 1), 23);
harness.check(dest.getSample(4, 1, 1), 35);
harness.check(dest.getSample(0, 2, 1), 12);
harness.check(dest.getSample(1, 2, 1), 48);
harness.check(dest.getSample(2, 2, 1), 12);
harness.check(dest.getSample(3, 2, 1), 48);
harness.check(dest.getSample(4, 2, 1), 12);
harness.check(dest.getSample(0, 3, 1), 35);
harness.check(dest.getSample(1, 3, 1), 23);
harness.check(dest.getSample(2, 3, 1), 35);
harness.check(dest.getSample(3, 3, 1), 23);
harness.check(dest.getSample(4, 3, 1), 35);
harness.check(dest.getSample(0, 4, 1), 12);
harness.check(dest.getSample(1, 4, 1), 48);
harness.check(dest.getSample(2, 4, 1), 12);
harness.check(dest.getSample(3, 4, 1), 48);
harness.check(dest.getSample(4, 4, 1), 12);
// Sun's implementation uses RGAB (alpha as the 3rd band), as opposed to
// our RGBA, so these tests will fail... however these might not be worth
// changing, so left them commented out for now.
/*
harness.check(dest.getSample(0, 0, 2), 2);
harness.check(dest.getSample(1, 0, 2), 3);
harness.check(dest.getSample(2, 0, 2), 2);
harness.check(dest.getSample(3, 0, 2), 3);
harness.check(dest.getSample(4, 0, 2), 2);
harness.check(dest.getSample(0, 1, 2), 4);
harness.check(dest.getSample(1, 1, 2), 2);
harness.check(dest.getSample(2, 1, 2), 4);
harness.check(dest.getSample(3, 1, 2), 2);
harness.check(dest.getSample(4, 1, 2), 4);
harness.check(dest.getSample(0, 2, 2), 2);
harness.check(dest.getSample(1, 2, 2), 3);
harness.check(dest.getSample(2, 2, 2), 2);
harness.check(dest.getSample(3, 2, 2), 3);
harness.check(dest.getSample(4, 2, 2), 2);
harness.check(dest.getSample(0, 3, 2), 4);
harness.check(dest.getSample(1, 3, 2), 2);
harness.check(dest.getSample(2, 3, 2), 4);
harness.check(dest.getSample(3, 3, 2), 2);
harness.check(dest.getSample(4, 3, 2), 4);
harness.check(dest.getSample(0, 4, 2), 2);
harness.check(dest.getSample(1, 4, 2), 3);
harness.check(dest.getSample(2, 4, 2), 2);
harness.check(dest.getSample(3, 4, 2), 3);
harness.check(dest.getSample(4, 4, 2), 2);
harness.check(dest.getSample(0, 0, 3), 12);
harness.check(dest.getSample(1, 0, 3), 48);
harness.check(dest.getSample(2, 0, 3), 12);
harness.check(dest.getSample(3, 0, 3), 48);
harness.check(dest.getSample(4, 0, 3), 12);
harness.check(dest.getSample(0, 1, 3), 35);
harness.check(dest.getSample(1, 1, 3), 23);
harness.check(dest.getSample(2, 1, 3), 35);
harness.check(dest.getSample(3, 1, 3), 23);
harness.check(dest.getSample(4, 1, 3), 35);
harness.check(dest.getSample(0, 2, 3), 12);
harness.check(dest.getSample(1, 2, 3), 48);
harness.check(dest.getSample(2, 2, 3), 12);
harness.check(dest.getSample(3, 2, 3), 48);
harness.check(dest.getSample(4, 2, 3), 12);
harness.check(dest.getSample(0, 3, 3), 35);
harness.check(dest.getSample(1, 3, 3), 23);
harness.check(dest.getSample(2, 3, 3), 35);
harness.check(dest.getSample(3, 3, 3), 23);
harness.check(dest.getSample(4, 3, 3), 35);
harness.check(dest.getSample(0, 4, 3), 12);
harness.check(dest.getSample(1, 4, 3), 48);
harness.check(dest.getSample(2, 4, 3), 12);
harness.check(dest.getSample(3, 4, 3), 48);
harness.check(dest.getSample(4, 4, 3), 12);
*/
}
private void testColourLookup(TestHarness harness, boolean premultiply)
{
if (premultiply)
harness.checkPoint("testColourLookup with premultiply");
else
harness.checkPoint("testColourLookup without premultiply");
// Create an image to work on
BufferedImage img;
if (premultiply)
img = new BufferedImage(5, 5, BufferedImage.TYPE_INT_ARGB_PRE);
else
img = new BufferedImage(5, 5, BufferedImage.TYPE_INT_ARGB);
createImage(img);
short[][] lutarray = new short[][] {{12, 23, 14, 35, 48, 2},
{112, 123, 114, 135, 148, 102},
{212, 223, 214, 235, 248, 202}
};
ShortLookupTable t = new ShortLookupTable(0, lutarray);
LookupOp op = new LookupOp(t, null);
BufferedImage dst = new BufferedImage(5, 5, BufferedImage.TYPE_INT_ARGB);
/* This causes Sun to throw an exception...
*
* java.lang.IllegalArgumentException: Number of channels in the src (4)
* does not match number of channels in the destination (2)
*
* I'm pretty sure it's a bug, but it's not one that's worth mimicing.
* This test will not run on Sun.
*/
try
{
dst = op.filter(img, dst);
WritableRaster dest = dst.getRaster();
harness.check(img.isAlphaPremultiplied(), premultiply);
harness.check(dst.isAlphaPremultiplied(), false);
harness.check(dest.getSample(0, 0, 0), 23);
harness.check(dest.getSample(1, 0, 0), 35);
harness.check(dest.getSample(2, 0, 0), 23);
harness.check(dest.getSample(3, 0, 0), 35);
harness.check(dest.getSample(4, 0, 0), 23);
harness.check(dest.getSample(0, 1, 0), 48);
harness.check(dest.getSample(1, 1, 0), 14);
harness.check(dest.getSample(2, 1, 0), 48);
harness.check(dest.getSample(3, 1, 0), 14);
harness.check(dest.getSample(4, 1, 0), 48);
harness.check(dest.getSample(0, 2, 0), 23);
harness.check(dest.getSample(1, 2, 0), 35);
harness.check(dest.getSample(2, 2, 0), 23);
harness.check(dest.getSample(3, 2, 0), 35);
harness.check(dest.getSample(4, 2, 0), 23);
harness.check(dest.getSample(0, 3, 0), 48);
harness.check(dest.getSample(1, 3, 0), 14);
harness.check(dest.getSample(2, 3, 0), 48);
harness.check(dest.getSample(3, 3, 0), 14);
harness.check(dest.getSample(4, 3, 0), 48);
harness.check(dest.getSample(0, 4, 0), 23);
harness.check(dest.getSample(1, 4, 0), 35);
harness.check(dest.getSample(2, 4, 0), 23);
harness.check(dest.getSample(3, 4, 0), 35);
harness.check(dest.getSample(4, 4, 0), 23);
harness.check(dest.getSample(0, 0, 1), 112);
harness.check(dest.getSample(1, 0, 1), 148);
harness.check(dest.getSample(2, 0, 1), 112);
harness.check(dest.getSample(3, 0, 1), 148);
harness.check(dest.getSample(4, 0, 1), 112);
harness.check(dest.getSample(0, 1, 1), 135);
harness.check(dest.getSample(1, 1, 1), 123);
harness.check(dest.getSample(2, 1, 1), 135);
harness.check(dest.getSample(3, 1, 1), 123);
harness.check(dest.getSample(4, 1, 1), 135);
harness.check(dest.getSample(0, 2, 1), 112);
harness.check(dest.getSample(1, 2, 1), 148);
harness.check(dest.getSample(2, 2, 1), 112);
harness.check(dest.getSample(3, 2, 1), 148);
harness.check(dest.getSample(4, 2, 1), 112);
harness.check(dest.getSample(0, 3, 1), 135);
harness.check(dest.getSample(1, 3, 1), 123);
harness.check(dest.getSample(2, 3, 1), 135);
harness.check(dest.getSample(3, 3, 1), 123);
harness.check(dest.getSample(4, 3, 1), 135);
harness.check(dest.getSample(0, 4, 1), 112);
harness.check(dest.getSample(1, 4, 1), 148);
harness.check(dest.getSample(2, 4, 1), 112);
harness.check(dest.getSample(3, 4, 1), 148);
harness.check(dest.getSample(4, 4, 1), 112);
// Sun's implementation uses RGAB (alpha as the 3rd band), as opposed to
// our RGBA, so these tests will fail... however these might not be worth
// changing, so left them commented out for now.
/*
harness.check(dest.getSample(0, 0, 2), 2);
harness.check(dest.getSample(1, 0, 2), 3);
harness.check(dest.getSample(2, 0, 2), 2);
harness.check(dest.getSample(3, 0, 2), 3);
harness.check(dest.getSample(4, 0, 2), 2);
harness.check(dest.getSample(0, 1, 2), 4);
harness.check(dest.getSample(1, 1, 2), 2);
harness.check(dest.getSample(2, 1, 2), 4);
harness.check(dest.getSample(3, 1, 2), 2);
harness.check(dest.getSample(4, 1, 2), 4);
harness.check(dest.getSample(0, 2, 2), 2);
harness.check(dest.getSample(1, 2, 2), 3);
harness.check(dest.getSample(2, 2, 2), 2);
harness.check(dest.getSample(3, 2, 2), 3);
harness.check(dest.getSample(4, 2, 2), 2);
harness.check(dest.getSample(0, 3, 2), 4);
harness.check(dest.getSample(1, 3, 2), 2);
harness.check(dest.getSample(2, 3, 2), 4);
harness.check(dest.getSample(3, 3, 2), 2);
harness.check(dest.getSample(4, 3, 2), 4);
harness.check(dest.getSample(0, 4, 2), 2);
harness.check(dest.getSample(1, 4, 2), 3);
harness.check(dest.getSample(2, 4, 2), 2);
harness.check(dest.getSample(3, 4, 2), 3);
harness.check(dest.getSample(4, 4, 2), 2);
harness.check(dest.getSample(0, 0, 3), 212);
harness.check(dest.getSample(1, 0, 3), 248);
harness.check(dest.getSample(2, 0, 3), 212);
harness.check(dest.getSample(3, 0, 3), 248);
harness.check(dest.getSample(4, 0, 3), 212);
harness.check(dest.getSample(0, 1, 3), 235);
harness.check(dest.getSample(1, 1, 3), 223);
harness.check(dest.getSample(2, 1, 3), 235);
harness.check(dest.getSample(3, 1, 3), 223);
harness.check(dest.getSample(4, 1, 3), 235);
harness.check(dest.getSample(0, 2, 3), 212);
harness.check(dest.getSample(1, 2, 3), 248);
harness.check(dest.getSample(2, 2, 3), 212);
harness.check(dest.getSample(3, 2, 3), 248);
harness.check(dest.getSample(4, 2, 3), 212);
harness.check(dest.getSample(0, 3, 3), 235);
harness.check(dest.getSample(1, 3, 3), 223);
harness.check(dest.getSample(2, 3, 3), 235);
harness.check(dest.getSample(3, 3, 3), 223);
harness.check(dest.getSample(4, 3, 3), 235);
harness.check(dest.getSample(0, 4, 3), 212);
harness.check(dest.getSample(1, 4, 3), 248);
harness.check(dest.getSample(2, 4, 3), 212);
harness.check(dest.getSample(3, 4, 3), 248);
harness.check(dest.getSample(4, 4, 3), 212);
*/
}
catch (IllegalArgumentException ex)
{
harness.debug("Test did not run - this is expected on Sun due to a " +
"bug in their implementation, but this message should not show " +
"when testing Classpath.");
}
}
private void testAllLookup(TestHarness harness, boolean premultiply)
{
if (premultiply)
harness.checkPoint("testAllLookup with premultiply");
else
harness.checkPoint("testAllLookup without premultiply");
// Create an image to work on
BufferedImage img;
if (premultiply)
img = new BufferedImage(5, 5, BufferedImage.TYPE_INT_ARGB_PRE);
else
img = new BufferedImage(5, 5, BufferedImage.TYPE_INT_ARGB);
createImage(img);
short[][] lutarray = new short[][] {{12, 23, 14, 35, 48, 2},
{112, 123, 114, 135, 148, 102},
{212, 223, 214, 235, 248, 202},
{62, 73, 64, 85, 98, 52}
};
ShortLookupTable t = new ShortLookupTable(0, lutarray);
LookupOp op = new LookupOp(t, null);
BufferedImage dst = new BufferedImage(5, 5, BufferedImage.TYPE_INT_ARGB);
dst = op.filter(img, dst);
WritableRaster dest = dst.getRaster();
harness.check(img.isAlphaPremultiplied(), premultiply);
harness.check(dst.isAlphaPremultiplied(), false);
harness.check(dest.getSample(0, 0, 0), 23);
harness.check(dest.getSample(1, 0, 0), 35);
harness.check(dest.getSample(2, 0, 0), 23);
harness.check(dest.getSample(3, 0, 0), 35);
harness.check(dest.getSample(4, 0, 0), 23);
harness.check(dest.getSample(0, 1, 0), 48);
harness.check(dest.getSample(1, 1, 0), 14);
harness.check(dest.getSample(2, 1, 0), 48);
harness.check(dest.getSample(3, 1, 0), 14);
harness.check(dest.getSample(4, 1, 0), 48);
harness.check(dest.getSample(0, 2, 0), 23);
harness.check(dest.getSample(1, 2, 0), 35);
harness.check(dest.getSample(2, 2, 0), 23);
harness.check(dest.getSample(3, 2, 0), 35);
harness.check(dest.getSample(4, 2, 0), 23);
harness.check(dest.getSample(0, 3, 0), 48);
harness.check(dest.getSample(1, 3, 0), 14);
harness.check(dest.getSample(2, 3, 0), 48);
harness.check(dest.getSample(3, 3, 0), 14);
harness.check(dest.getSample(4, 3, 0), 48);
harness.check(dest.getSample(0, 4, 0), 23);
harness.check(dest.getSample(1, 4, 0), 35);
harness.check(dest.getSample(2, 4, 0), 23);
harness.check(dest.getSample(3, 4, 0), 35);
harness.check(dest.getSample(4, 4, 0), 23);
harness.check(dest.getSample(0, 0, 1), 112);
harness.check(dest.getSample(1, 0, 1), 148);
harness.check(dest.getSample(2, 0, 1), 112);
harness.check(dest.getSample(3, 0, 1), 148);
harness.check(dest.getSample(4, 0, 1), 112);
harness.check(dest.getSample(0, 1, 1), 135);
harness.check(dest.getSample(1, 1, 1), 123);
harness.check(dest.getSample(2, 1, 1), 135);
harness.check(dest.getSample(3, 1, 1), 123);
harness.check(dest.getSample(4, 1, 1), 135);
harness.check(dest.getSample(0, 2, 1), 112);
harness.check(dest.getSample(1, 2, 1), 148);
harness.check(dest.getSample(2, 2, 1), 112);
harness.check(dest.getSample(3, 2, 1), 148);
harness.check(dest.getSample(4, 2, 1), 112);
harness.check(dest.getSample(0, 3, 1), 135);
harness.check(dest.getSample(1, 3, 1), 123);
harness.check(dest.getSample(2, 3, 1), 135);
harness.check(dest.getSample(3, 3, 1), 123);
harness.check(dest.getSample(4, 3, 1), 135);
harness.check(dest.getSample(0, 4, 1), 112);
harness.check(dest.getSample(1, 4, 1), 148);
harness.check(dest.getSample(2, 4, 1), 112);
harness.check(dest.getSample(3, 4, 1), 148);
harness.check(dest.getSample(4, 4, 1), 112);
harness.check(dest.getSample(0, 0, 2), 214);
harness.check(dest.getSample(1, 0, 2), 235);
harness.check(dest.getSample(2, 0, 2), 214);
harness.check(dest.getSample(3, 0, 2), 235);
harness.check(dest.getSample(4, 0, 2), 214);
harness.check(dest.getSample(0, 1, 2), 248);
harness.check(dest.getSample(1, 1, 2), 214);
harness.check(dest.getSample(2, 1, 2), 248);
harness.check(dest.getSample(3, 1, 2), 214);
harness.check(dest.getSample(4, 1, 2), 248);
harness.check(dest.getSample(0, 2, 2), 214);
harness.check(dest.getSample(1, 2, 2), 235);
harness.check(dest.getSample(2, 2, 2), 214);
harness.check(dest.getSample(3, 2, 2), 235);
harness.check(dest.getSample(4, 2, 2), 214);
harness.check(dest.getSample(0, 3, 2), 248);
harness.check(dest.getSample(1, 3, 2), 214);
harness.check(dest.getSample(2, 3, 2), 248);
harness.check(dest.getSample(3, 3, 2), 214);
harness.check(dest.getSample(4, 3, 2), 248);
harness.check(dest.getSample(0, 4, 2), 214);
harness.check(dest.getSample(1, 4, 2), 235);
harness.check(dest.getSample(2, 4, 2), 214);
harness.check(dest.getSample(3, 4, 2), 235);
harness.check(dest.getSample(4, 4, 2), 214);
harness.check(dest.getSample(0, 0, 3), 62);
harness.check(dest.getSample(1, 0, 3), 98);
harness.check(dest.getSample(2, 0, 3), 62);
harness.check(dest.getSample(3, 0, 3), 98);
harness.check(dest.getSample(4, 0, 3), 62);
harness.check(dest.getSample(0, 1, 3), 85);
harness.check(dest.getSample(1, 1, 3), 73);
harness.check(dest.getSample(2, 1, 3), 85);
harness.check(dest.getSample(3, 1, 3), 73);
harness.check(dest.getSample(4, 1, 3), 85);
harness.check(dest.getSample(0, 2, 3), 62);
harness.check(dest.getSample(1, 2, 3), 98);
harness.check(dest.getSample(2, 2, 3), 62);
harness.check(dest.getSample(3, 2, 3), 98);
harness.check(dest.getSample(4, 2, 3), 62);
harness.check(dest.getSample(0, 3, 3), 85);
harness.check(dest.getSample(1, 3, 3), 73);
harness.check(dest.getSample(2, 3, 3), 85);
harness.check(dest.getSample(3, 3, 3), 73);
harness.check(dest.getSample(4, 3, 3), 85);
harness.check(dest.getSample(0, 4, 3), 62);
harness.check(dest.getSample(1, 4, 3), 98);
harness.check(dest.getSample(2, 4, 3), 62);
harness.check(dest.getSample(3, 4, 3), 98);
harness.check(dest.getSample(4, 4, 3), 62);
}
private void testUndefined(TestHarness harness)
{
harness.checkPoint("testUndefined");
// Create an image to work on
BufferedImage img = new BufferedImage(5, 5, BufferedImage.TYPE_INT_ARGB);
WritableRaster r = img.getRaster();
r.setSample(1, 1, 0, 20);
// We get the ArrayIndexOutOfBoundsException that we would expect when
// using a ShortLookupTable...
short[] lutarray = new short[] {0, 1, 2, 3, 4, 5, 6, 7, 8};
ShortLookupTable t = new ShortLookupTable(0, lutarray);
LookupOp op = new LookupOp(t, null);
try
{
op.filter(img, null);
harness.check(false);
}
catch (ArrayIndexOutOfBoundsException ex)
{
harness.check(true);
}
// But a ByteLookupTable will give us undetermined results
// (is a native array overflowing in sun's implementation?)
byte[] bytes = new byte[] {0, 1, 2, 3, 4, 5, 6, 7, 8};
ByteLookupTable t2 = new ByteLookupTable(0, bytes);
op = new LookupOp(t2, null);
try
{
op.filter(img, null);
harness.check(true);
}
catch (ArrayIndexOutOfBoundsException ex)
{
// Allow an exception to be thrown anyways, since it makes more sense
harness.check(true);
}
// And a test for the behaviour when source and dest have a different
// number of bands (since the constructor does not throw an exception)
r.setSample(1, 1, 0, 5);
r.setSample(1, 1, 1, 4);
r.setSample(1, 1, 2, 3);
r.setSample(1, 1, 3, 2);
BufferedImage dst = new BufferedImage(5, 5, BufferedImage.TYPE_USHORT_GRAY);
try
{
// It doesn't throw an exception...
op.filter(img, dst);
harness.check(true);
}
catch (IllegalArgumentException ex)
{
harness.check(false);
}
// Now try a destination with *more* bands
img = new BufferedImage(5, 5, BufferedImage.TYPE_USHORT_GRAY);
r = img.getRaster();
r.setSample(1, 1, 0, 5);
dst = new BufferedImage(5, 5, BufferedImage.TYPE_INT_ARGB);
try
{
// It doesn't throw an exception either...
op.filter(img, dst);
harness.check(true);
}
catch (IllegalArgumentException ex)
{
harness.check(false);
}
}
// Vary pixel values in the image
private void createImage(BufferedImage img)
{
WritableRaster r = img.getRaster();
for (int i = 0; i < r.getHeight(); i++)
for (int j = 0; j < r.getWidth(); j++)
{
if (i % 2 == 0)
if (j % 2 == 0)
{
r.setSample(j, i, 0, 1);
r.setSample(j, i, 1, 0);
r.setSample(j, i, 2, 2);
r.setSample(j, i, 3, 0);
}
else
{
r.setSample(j, i, 0, 3);
r.setSample(j, i, 1, 4);
r.setSample(j, i, 2, 3);
r.setSample(j, i, 3, 4);
}
else
if (j % 2 == 0)
{
r.setSample(j, i, 0, 4);
r.setSample(j, i, 1, 3);
r.setSample(j, i, 2, 4);
r.setSample(j, i, 3, 3);
}
else
{
r.setSample(j, i, 0, 2);
r.setSample(j, i, 1, 1);
r.setSample(j, i, 2, 2);
r.setSample(j, i, 3, 1);
}
}
}
}