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TMI-TIFF: Horizontal differencing predictor implementation as stream, for easier reading.
This commit is contained in:
Harald Kuhr
+569
@@ -0,0 +1,569 @@
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/*
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* Copyright (c) 2013, Harald Kuhr
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name "TwelveMonkeys" nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package com.twelvemonkeys.imageio.plugins.tiff;
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import com.twelvemonkeys.io.FastByteArrayOutputStream;
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import com.twelvemonkeys.io.LittleEndianDataInputStream;
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import com.twelvemonkeys.io.LittleEndianDataOutputStream;
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import org.junit.Test;
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import java.io.*;
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import java.nio.ByteOrder;
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import static org.junit.Assert.*;
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/**
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* HorizontalDeDifferencingStreamTest
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*
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* @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
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* @author last modified by $Author: haraldk$
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* @version $Id: HorizontalDeDifferencingStreamTest.java,v 1.0 13.03.13 12:46 haraldk Exp$
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*/
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public class HorizontalDeDifferencingStreamTest {
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@Test
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public void testRead1SPP1BPS() throws IOException {
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// 1 sample per pixel, 1 bits per sample (mono/indexed)
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byte[] data = {
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(byte) 0x80, 0x00, 0x00,
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0x71, 0x11, 0x44,
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};
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InputStream stream = new HorizontalDeDifferencingStream(new ByteArrayInputStream(data), 24, 1, 1, ByteOrder.BIG_ENDIAN);
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// Row 1
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assertEquals(0xff, stream.read());
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assertEquals(0xff, stream.read());
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assertEquals(0xff, stream.read());
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// Row 2
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assertEquals(0x5e, stream.read());
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assertEquals(0x1e, stream.read());
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assertEquals(0x78, stream.read());
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// EOF
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assertEquals(-1, stream.read());
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}
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@Test
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public void testRead1SPP2BPS() throws IOException {
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// 1 sample per pixel, 2 bits per sample (gray/indexed)
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byte[] data = {
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(byte) 0xc0, 0x00, 0x00, 0x00,
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0x71, 0x11, 0x44, (byte) 0xcc,
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};
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InputStream stream = new HorizontalDeDifferencingStream(new ByteArrayInputStream(data), 16, 1, 2, ByteOrder.BIG_ENDIAN);
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// Row 1
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assertEquals(0xff, stream.read());
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assertEquals(0xff, stream.read());
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assertEquals(0xff, stream.read());
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assertEquals(0xff, stream.read());
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// Row 2
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assertEquals(0x41, stream.read());
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assertEquals(0x6b, stream.read());
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assertEquals(0x05, stream.read());
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assertEquals(0x0f, stream.read());
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// EOF
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assertEquals(-1, stream.read());
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}
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@Test
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public void testRead1SPP4BPS() throws IOException {
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// 1 sample per pixel, 4 bits per sample (gray/indexed)
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byte[] data = {
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(byte) 0xf0, 0x00, 0x00, 0x00,
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0x70, 0x11, 0x44, (byte) 0xcc,
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0x00, 0x01, 0x10, (byte) 0xe0
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};
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InputStream stream = new HorizontalDeDifferencingStream(new ByteArrayInputStream(data), 8, 1, 4, ByteOrder.BIG_ENDIAN);
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// Row 1
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assertEquals(0xff, stream.read());
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assertEquals(0xff, stream.read());
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assertEquals(0xff, stream.read());
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assertEquals(0xff, stream.read());
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// Row 2
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assertEquals(0x77, stream.read());
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assertEquals(0x89, stream.read());
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assertEquals(0xd1, stream.read());
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assertEquals(0xd9, stream.read());
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// Row 3
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assertEquals(0x00, stream.read());
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assertEquals(0x01, stream.read());
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assertEquals(0x22, stream.read());
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assertEquals(0x00, stream.read());
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// EOF
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assertEquals(-1, stream.read());
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}
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@Test
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public void testRead1SPP8BPS() throws IOException {
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// 1 sample per pixel, 8 bits per sample (gray/indexed)
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byte[] data = {
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(byte) 0xff, 0, 0, 0,
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0x7f, 1, 4, -4,
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0x00, 127, 127, -127
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};
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InputStream stream = new HorizontalDeDifferencingStream(new ByteArrayInputStream(data), 4, 1, 8, ByteOrder.BIG_ENDIAN);
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// Row 1
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assertEquals(0xff, stream.read());
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assertEquals(0xff, stream.read());
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assertEquals(0xff, stream.read());
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assertEquals(0xff, stream.read());
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// Row 2
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assertEquals(0x7f, stream.read());
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assertEquals(0x80, stream.read());
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assertEquals(0x84, stream.read());
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assertEquals(0x80, stream.read());
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// Row 3
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assertEquals(0x00, stream.read());
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assertEquals(0x7f, stream.read());
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assertEquals(0xfe, stream.read());
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assertEquals(0x7f, stream.read());
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// EOF
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assertEquals(-1, stream.read());
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}
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@Test
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public void testReadArray1SPP8BPS() throws IOException {
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// 1 sample per pixel, 8 bits per sample (gray/indexed)
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byte[] data = {
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(byte) 0xff, 0, 0, 0,
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0x7f, 1, 4, -4,
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0x00, 127, 127, -127
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};
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InputStream stream = new HorizontalDeDifferencingStream(new ByteArrayInputStream(data), 4, 1, 8, ByteOrder.BIG_ENDIAN);
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byte[] result = new byte[data.length];
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new DataInputStream(stream).readFully(result);
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assertArrayEquals(
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new byte[] {
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(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
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0x7f, (byte) 0x80, (byte) 0x84, (byte) 0x80,
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0x00, 0x7f, (byte) 0xfe, 0x7f,
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},
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result
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);
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// EOF
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assertEquals(-1, stream.read(new byte[16]));
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assertEquals(-1, stream.read());
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}
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@Test
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public void testRead1SPP32BPS() throws IOException {
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// 1 sample per pixel, 32 bits per sample (gray)
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FastByteArrayOutputStream out = new FastByteArrayOutputStream(16);
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DataOutput dataOut = new DataOutputStream(out);
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dataOut.writeInt(0x00000000);
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dataOut.writeInt(305419896);
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dataOut.writeInt(305419896);
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dataOut.writeInt(-610839792);
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InputStream in = new HorizontalDeDifferencingStream(out.createInputStream(), 4, 1, 32, ByteOrder.BIG_ENDIAN);
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DataInput dataIn = new DataInputStream(in);
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// Row 1
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assertEquals(0, dataIn.readInt());
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assertEquals(305419896, dataIn.readInt());
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assertEquals(610839792, dataIn.readInt());
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assertEquals(0, dataIn.readInt());
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// EOF
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assertEquals(-1, in.read());
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}
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@Test
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public void testRead1SPP32BPSLittleEndian() throws IOException {
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// 1 sample per pixel, 32 bits per sample (gray)
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FastByteArrayOutputStream out = new FastByteArrayOutputStream(16);
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DataOutput dataOut = new LittleEndianDataOutputStream(out);
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dataOut.writeInt(0x00000000);
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dataOut.writeInt(305419896);
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dataOut.writeInt(305419896);
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dataOut.writeInt(-610839792);
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InputStream in = new HorizontalDeDifferencingStream(out.createInputStream(), 4, 1, 32, ByteOrder.LITTLE_ENDIAN);
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DataInput dataIn = new LittleEndianDataInputStream(in);
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// Row 1
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assertEquals(0, dataIn.readInt());
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assertEquals(305419896, dataIn.readInt());
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assertEquals(610839792, dataIn.readInt());
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assertEquals(0, dataIn.readInt());
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// EOF
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assertEquals(-1, in.read());
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}
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@Test
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public void testRead1SPP64BPS() throws IOException {
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// 1 sample per pixel, 64 bits per sample (gray)
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FastByteArrayOutputStream out = new FastByteArrayOutputStream(32);
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DataOutput dataOut = new DataOutputStream(out);
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dataOut.writeLong(0x00000000);
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dataOut.writeLong(81985529216486895L);
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dataOut.writeLong(81985529216486895L);
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dataOut.writeLong(-163971058432973790L);
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InputStream in = new HorizontalDeDifferencingStream(out.createInputStream(), 4, 1, 64, ByteOrder.BIG_ENDIAN);
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DataInput dataIn = new DataInputStream(in);
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// Row 1
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assertEquals(0, dataIn.readLong());
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assertEquals(81985529216486895L, dataIn.readLong());
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assertEquals(163971058432973790L, dataIn.readLong());
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assertEquals(0, dataIn.readLong());
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// EOF
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assertEquals(-1, in.read());
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}
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@Test
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public void testRead1SPP64BPSLittleEndian() throws IOException {
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// 1 sample per pixel, 64 bits per sample (gray)
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FastByteArrayOutputStream out = new FastByteArrayOutputStream(32);
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DataOutput dataOut = new LittleEndianDataOutputStream(out);
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dataOut.writeLong(0x00000000);
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dataOut.writeLong(81985529216486895L);
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dataOut.writeLong(81985529216486895L);
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dataOut.writeLong(-163971058432973790L);
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InputStream in = new HorizontalDeDifferencingStream(out.createInputStream(), 4, 1, 64, ByteOrder.LITTLE_ENDIAN);
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DataInput dataIn = new LittleEndianDataInputStream(in);
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// Row 1
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assertEquals(0, dataIn.readLong());
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assertEquals(81985529216486895L, dataIn.readLong());
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assertEquals(163971058432973790L, dataIn.readLong());
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assertEquals(0, dataIn.readLong());
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// EOF
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assertEquals(-1, in.read());
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}
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@Test
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public void testRead3SPP8BPS() throws IOException {
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// 3 samples per pixel, 8 bits per sample (RGB)
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byte[] data = {
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(byte) 0xff, (byte) 0x00, (byte) 0x7f, -1, -1, -1, -4, -4, -4, 4, 4, 4,
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0x7f, 0x7f, 0x7f, 1, 1, 1, 4, 4, 4, -4, -4, -4,
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0x00, 0x00, 0x00, 127, -127, 0, -127, 127, 0, 0, 0, 127,
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};
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InputStream stream = new HorizontalDeDifferencingStream(new ByteArrayInputStream(data), 4, 3, 8, ByteOrder.BIG_ENDIAN);
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// Row 1
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assertEquals(0xff, stream.read());
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assertEquals(0x00, stream.read());
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assertEquals(0x7f, stream.read());
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assertEquals(0xfe, stream.read());
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assertEquals(0xff, stream.read());
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assertEquals(0x7e, stream.read());
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assertEquals(0xfa, stream.read());
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assertEquals(0xfb, stream.read());
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assertEquals(0x7a, stream.read());
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assertEquals(0xfe, stream.read());
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assertEquals(0xff, stream.read());
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assertEquals(0x7e, stream.read());
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// Row 2
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assertEquals(0x7f, stream.read());
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assertEquals(0x7f, stream.read());
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assertEquals(0x7f, stream.read());
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assertEquals(0x80, stream.read());
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assertEquals(0x80, stream.read());
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assertEquals(0x80, stream.read());
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assertEquals(0x84, stream.read());
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assertEquals(0x84, stream.read());
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assertEquals(0x84, stream.read());
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assertEquals(0x80, stream.read());
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assertEquals(0x80, stream.read());
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assertEquals(0x80, stream.read());
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// Row 3
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assertEquals(0x00, stream.read());
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assertEquals(0x00, stream.read());
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assertEquals(0x00, stream.read());
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assertEquals(0x7f, stream.read());
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assertEquals(0x81, stream.read());
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assertEquals(0x00, stream.read());
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assertEquals(0x00, stream.read());
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assertEquals(0x00, stream.read());
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assertEquals(0x00, stream.read());
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assertEquals(0x00, stream.read());
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assertEquals(0x00, stream.read());
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assertEquals(0x7f, stream.read());
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// EOF
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assertEquals(-1, stream.read());
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}
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@Test
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public void testRead3SPP16BPS() throws IOException {
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FastByteArrayOutputStream out = new FastByteArrayOutputStream(24);
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DataOutput dataOut = new DataOutputStream(out);
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dataOut.writeShort(0x0000);
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dataOut.writeShort(0x0000);
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dataOut.writeShort(0x0000);
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dataOut.writeShort(4660);
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dataOut.writeShort(30292);
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dataOut.writeShort(4660);
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dataOut.writeShort(4660);
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dataOut.writeShort(30292);
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dataOut.writeShort(4660);
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dataOut.writeShort(-9320);
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dataOut.writeShort(-60584);
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dataOut.writeShort(-9320);
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dataOut.writeShort(0x0000);
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dataOut.writeShort(0x0000);
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dataOut.writeShort(0x0000);
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dataOut.writeShort(30292);
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dataOut.writeShort(30292);
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dataOut.writeShort(30292);
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dataOut.writeShort(30292);
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dataOut.writeShort(30292);
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dataOut.writeShort(30292);
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dataOut.writeShort(-60584);
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dataOut.writeShort(-60584);
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dataOut.writeShort(-60584);
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InputStream in = new HorizontalDeDifferencingStream(out.createInputStream(), 4, 3, 16, ByteOrder.BIG_ENDIAN);
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DataInput dataIn = new DataInputStream(in);
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// Row 1
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assertEquals(0, dataIn.readUnsignedShort());
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assertEquals(0, dataIn.readUnsignedShort());
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assertEquals(0, dataIn.readUnsignedShort());
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assertEquals(4660, dataIn.readUnsignedShort());
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assertEquals(30292, dataIn.readUnsignedShort());
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assertEquals(4660, dataIn.readUnsignedShort());
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assertEquals(9320, dataIn.readUnsignedShort());
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assertEquals(60584, dataIn.readUnsignedShort());
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assertEquals(9320, dataIn.readUnsignedShort());
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assertEquals(0, dataIn.readUnsignedShort());
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assertEquals(0, dataIn.readUnsignedShort());
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assertEquals(0, dataIn.readUnsignedShort());
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// Row 2
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assertEquals(0, dataIn.readUnsignedShort());
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assertEquals(0, dataIn.readUnsignedShort());
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assertEquals(0, dataIn.readUnsignedShort());
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||||
assertEquals(30292, dataIn.readUnsignedShort());
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assertEquals(30292, dataIn.readUnsignedShort());
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assertEquals(30292, dataIn.readUnsignedShort());
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assertEquals(60584, dataIn.readUnsignedShort());
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assertEquals(60584, dataIn.readUnsignedShort());
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assertEquals(60584, dataIn.readUnsignedShort());
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assertEquals(0, dataIn.readUnsignedShort());
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assertEquals(0, dataIn.readUnsignedShort());
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assertEquals(0, dataIn.readUnsignedShort());
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// EOF
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assertEquals(-1, in.read());
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}
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@Test
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public void testRead3SPP16BPSLittleEndian() throws IOException {
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FastByteArrayOutputStream out = new FastByteArrayOutputStream(24);
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DataOutput dataOut = new LittleEndianDataOutputStream(out);
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dataOut.writeShort(0x0000);
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dataOut.writeShort(0x0000);
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dataOut.writeShort(0x0000);
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dataOut.writeShort(4660);
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dataOut.writeShort(30292);
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dataOut.writeShort(4660);
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dataOut.writeShort(4660);
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dataOut.writeShort(30292);
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dataOut.writeShort(4660);
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dataOut.writeShort(-9320);
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dataOut.writeShort(-60584);
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dataOut.writeShort(-9320);
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dataOut.writeShort(0x0000);
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dataOut.writeShort(0x0000);
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dataOut.writeShort(0x0000);
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dataOut.writeShort(30292);
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dataOut.writeShort(30292);
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dataOut.writeShort(30292);
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dataOut.writeShort(30292);
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dataOut.writeShort(30292);
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dataOut.writeShort(30292);
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dataOut.writeShort(-60584);
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dataOut.writeShort(-60584);
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dataOut.writeShort(-60584);
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InputStream in = new HorizontalDeDifferencingStream(out.createInputStream(), 4, 3, 16, ByteOrder.LITTLE_ENDIAN);
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DataInput dataIn = new LittleEndianDataInputStream(in);
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// Row 1
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assertEquals(0, dataIn.readUnsignedShort());
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||||
assertEquals(0, dataIn.readUnsignedShort());
|
||||
assertEquals(0, dataIn.readUnsignedShort());
|
||||
assertEquals(4660, dataIn.readUnsignedShort());
|
||||
assertEquals(30292, dataIn.readUnsignedShort());
|
||||
assertEquals(4660, dataIn.readUnsignedShort());
|
||||
assertEquals(9320, dataIn.readUnsignedShort());
|
||||
assertEquals(60584, dataIn.readUnsignedShort());
|
||||
assertEquals(9320, dataIn.readUnsignedShort());
|
||||
assertEquals(0, dataIn.readUnsignedShort());
|
||||
assertEquals(0, dataIn.readUnsignedShort());
|
||||
assertEquals(0, dataIn.readUnsignedShort());
|
||||
|
||||
// Row 2
|
||||
assertEquals(0, dataIn.readUnsignedShort());
|
||||
assertEquals(0, dataIn.readUnsignedShort());
|
||||
assertEquals(0, dataIn.readUnsignedShort());
|
||||
assertEquals(30292, dataIn.readUnsignedShort());
|
||||
assertEquals(30292, dataIn.readUnsignedShort());
|
||||
assertEquals(30292, dataIn.readUnsignedShort());
|
||||
assertEquals(60584, dataIn.readUnsignedShort());
|
||||
assertEquals(60584, dataIn.readUnsignedShort());
|
||||
assertEquals(60584, dataIn.readUnsignedShort());
|
||||
assertEquals(0, dataIn.readUnsignedShort());
|
||||
assertEquals(0, dataIn.readUnsignedShort());
|
||||
assertEquals(0, dataIn.readUnsignedShort());
|
||||
|
||||
// EOF
|
||||
assertEquals(-1, in.read());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testRead4SPP8BPS() throws IOException {
|
||||
// 4 samples per pixel, 8 bits per sample (RGBA)
|
||||
byte[] data = {
|
||||
(byte) 0xff, (byte) 0x00, (byte) 0x7f, 0x00, -1, -1, -1, -1, -4, -4, -4, -4, 4, 4, 4, 4,
|
||||
0x7f, 0x7f, 0x7f, 0x7f, 1, 1, 1, 1, 4, 4, 4, 4, -4, -4, -4, -4,
|
||||
};
|
||||
|
||||
InputStream stream = new HorizontalDeDifferencingStream(new ByteArrayInputStream(data), 4, 4, 8, ByteOrder.BIG_ENDIAN);
|
||||
|
||||
// Row 1
|
||||
assertEquals(0xff, stream.read());
|
||||
assertEquals(0x00, stream.read());
|
||||
assertEquals(0x7f, stream.read());
|
||||
assertEquals(0x00, stream.read());
|
||||
|
||||
assertEquals(0xfe, stream.read());
|
||||
assertEquals(0xff, stream.read());
|
||||
assertEquals(0x7e, stream.read());
|
||||
assertEquals(0xff, stream.read());
|
||||
|
||||
assertEquals(0xfa, stream.read());
|
||||
assertEquals(0xfb, stream.read());
|
||||
assertEquals(0x7a, stream.read());
|
||||
assertEquals(0xfb, stream.read());
|
||||
|
||||
assertEquals(0xfe, stream.read());
|
||||
assertEquals(0xff, stream.read());
|
||||
assertEquals(0x7e, stream.read());
|
||||
assertEquals(0xff, stream.read());
|
||||
|
||||
// Row 2
|
||||
assertEquals(0x7f, stream.read());
|
||||
assertEquals(0x7f, stream.read());
|
||||
assertEquals(0x7f, stream.read());
|
||||
assertEquals(0x7f, stream.read());
|
||||
|
||||
assertEquals(0x80, stream.read());
|
||||
assertEquals(0x80, stream.read());
|
||||
assertEquals(0x80, stream.read());
|
||||
assertEquals(0x80, stream.read());
|
||||
|
||||
assertEquals(0x84, stream.read());
|
||||
assertEquals(0x84, stream.read());
|
||||
assertEquals(0x84, stream.read());
|
||||
assertEquals(0x84, stream.read());
|
||||
|
||||
assertEquals(0x80, stream.read());
|
||||
assertEquals(0x80, stream.read());
|
||||
assertEquals(0x80, stream.read());
|
||||
assertEquals(0x80, stream.read());
|
||||
|
||||
// EOF
|
||||
assertEquals(-1, stream.read());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testReadArray4SPP8BPS() throws IOException {
|
||||
// 4 samples per pixel, 8 bits per sample (RGBA)
|
||||
byte[] data = {
|
||||
(byte) 0xff, (byte) 0x00, (byte) 0x7f, 0x00, -1, -1, -1, -1, -4, -4, -4, -4, 4, 4, 4, 4,
|
||||
0x7f, 0x7f, 0x7f, 0x7f, 1, 1, 1, 1, 4, 4, 4, 4, -4, -4, -4, -4,
|
||||
};
|
||||
|
||||
InputStream stream = new HorizontalDeDifferencingStream(new ByteArrayInputStream(data), 4, 4, 8, ByteOrder.BIG_ENDIAN);
|
||||
|
||||
byte[] result = new byte[data.length];
|
||||
new DataInputStream(stream).readFully(result);
|
||||
|
||||
assertArrayEquals(
|
||||
new byte[] {
|
||||
(byte) 0xff, 0x00, 0x7f, 0x00,
|
||||
(byte) 0xfe, (byte) 0xff, 0x7e, (byte) 0xff,
|
||||
(byte) 0xfa, (byte) 0xfb, 0x7a, (byte) 0xfb,
|
||||
(byte) 0xfe, (byte) 0xff, 0x7e, (byte) 0xff,
|
||||
|
||||
0x7f, 0x7f, 0x7f, 0x7f,
|
||||
(byte) 0x80, (byte) 0x80, (byte) 0x80, (byte) 0x80,
|
||||
(byte) 0x84, (byte) 0x84, (byte) 0x84, (byte) 0x84,
|
||||
(byte) 0x80, (byte) 0x80, (byte) 0x80, (byte) 0x80,
|
||||
},
|
||||
result
|
||||
);
|
||||
|
||||
// EOF
|
||||
assertEquals(-1, stream.read(new byte[16]));
|
||||
assertEquals(-1, stream.read());
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user