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TMI-TIFF: Test case for CCITT decoding.

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Harald Kuhr 2013-06-12 21:57:09 +02:00
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commit 6ce9543c00
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imageio/imageio-tiff/src/test/java/com/twelvemonkeys/imageio/plugins/tiff/CCITTFaxDecoderStreamTest.java Normal file
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/*
* Copyright (c) 2013, 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.tiff;
import org.junit.Before;
import org.junit.Test;
import java.awt.image.BufferedImage;
import java.awt.image.DataBufferByte;
import java.io.ByteArrayInputStream;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;
import static org.junit.Assert.*;
/**
* CCITTFaxDecoderStreamTest
*
* @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
* @author last modified by $Author: haraldk$
* @version $Id: CCITTFaxDecoderStreamTest.java,v 1.0 09.03.13 14:44 haraldk Exp$
*/
public class CCITTFaxDecoderStreamTest {
// TODO: Better tests (full A4 width scan lines?)
// From http://www.mikekohn.net/file_formats/tiff.php
static final byte[] DATA_TYPE_2 = {
(byte) 0x84, (byte) 0xe0, // 10000100 11100000
(byte) 0x84, (byte) 0xe0, // 10000100 11100000
(byte) 0x84, (byte) 0xe0, // 10000100 11100000
(byte) 0x7d, (byte) 0xc0, // 01111101 11000000
};
static final byte[] DATA_TYPE_3 = {
0x00, 0x01, (byte) 0xc2, 0x70,
0x00, 0x01, 0x70,
0x01,
};
static final byte[] DATA_TYPE_4 = {
0x26, (byte) 0xb0, 95, (byte) 0xfa, (byte) 0xc0
};
// Image should be (6 x 4):
// 1 1 1 0 1 1 x x
// 1 1 1 0 1 1 x x
// 1 1 1 0 1 1 x x
// 1 1 0 0 1 1 x x
BufferedImage image;
@Before
public void init() {
image = new BufferedImage(6, 4, BufferedImage.TYPE_BYTE_BINARY);
for (int y = 0; y < 4; y++) {
for (int x = 0; x < 6; x++) {
image.setRGB(x, y, x == 3 ? 0xff000000 : 0xffffffff);
}
}
image.setRGB(2, 3, 0xff000000);
}
@Test
public void testReadCountType2() throws IOException {
InputStream stream = new CCITTFaxDecoderStream(new ByteArrayInputStream(DATA_TYPE_2), 6, TIFFBaseline.COMPRESSION_CCITT_MODIFIED_HUFFMAN_RLE, 1);
int count = 0;
int read;
while ((read = stream.read()) >= 0) {
count++;
}
// Just make sure we'll have 4 bytes
assertEquals(4, count);
// Verify that we don't return arbitrary values
assertEquals(-1, read);
}
@Test
public void testDecodeType2() throws IOException {
InputStream stream = new CCITTFaxDecoderStream(new ByteArrayInputStream(DATA_TYPE_2), 6, TIFFBaseline.COMPRESSION_CCITT_MODIFIED_HUFFMAN_RLE, 1);
byte[] imageData = ((DataBufferByte) image.getData().getDataBuffer()).getData();
byte[] bytes = new byte[imageData.length];
new DataInputStream(stream).readFully(bytes);
// JPanel panel = new JPanel();
// panel.add(new JLabel("Expected", new BufferedImageIcon(image, 300, 300, true), JLabel.CENTER));
// panel.add(new JLabel("Actual", new BufferedImageIcon(new BufferedImage(image.getColorModel(), Raster.createPackedRaster(new DataBufferByte(bytes, bytes.length), 6, 4, 1, null), false, null), 300, 300, true), JLabel.CENTER));
// JOptionPane.showConfirmDialog(null, panel);
assertArrayEquals(imageData, bytes);
}
@Test(expected = IllegalArgumentException.class)
public void testDecodeType3() throws IOException {
InputStream stream = new CCITTFaxDecoderStream(new ByteArrayInputStream(DATA_TYPE_3), 6, TIFFExtension.COMPRESSION_CCITT_T4, 1);
byte[] imageData = ((DataBufferByte) image.getData().getDataBuffer()).getData();
byte[] bytes = new byte[imageData.length];
DataInputStream dataInput = new DataInputStream(stream);
for (int y = 0; y < image.getHeight(); y++) {
System.err.println("y: " + y);
dataInput.readFully(bytes, y * image.getWidth(), image.getWidth());
}
// JPanel panel = new JPanel();
// panel.add(new JLabel("Expected", new BufferedImageIcon(image, 300, 300, true), JLabel.CENTER));
// panel.add(new JLabel("Actual", new BufferedImageIcon(new BufferedImage(image.getColorModel(), Raster.createPackedRaster(new DataBufferByte(bytes, bytes.length), 6, 4, 1, null), false, null), 300, 300, true), JLabel.CENTER));
// JOptionPane.showConfirmDialog(null, panel);
assertArrayEquals(imageData, bytes);
}
@Test(expected = IllegalArgumentException.class)
public void testDecodeType4() throws IOException {
InputStream stream = new CCITTFaxDecoderStream(new ByteArrayInputStream(DATA_TYPE_4), 6, TIFFExtension.COMPRESSION_CCITT_T6, 1);
byte[] imageData = ((DataBufferByte) image.getData().getDataBuffer()).getData();
byte[] bytes = new byte[imageData.length];
DataInputStream dataInput = new DataInputStream(stream);
for (int y = 0; y < image.getHeight(); y++) {
System.err.println("y: " + y);
dataInput.readFully(bytes, y * image.getWidth(), image.getWidth());
}
// JPanel panel = new JPanel();
// panel.add(new JLabel("Expected", new BufferedImageIcon(image, 300, 300, true), JLabel.CENTER));
// panel.add(new JLabel("Actual", new BufferedImageIcon(new BufferedImage(image.getColorModel(), Raster.createPackedRaster(new DataBufferByte(bytes, bytes.length), 6, 4, 1, null), false, null), 300, 300, true), JLabel.CENTER));
// JOptionPane.showConfirmDialog(null, panel);
assertArrayEquals(imageData, bytes);
}
}