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/**
* Copyright 2014 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``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 JogAmp Community 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.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package com.jogamp.common.util;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import org.junit.Assert;
import org.junit.Test;
import com.jogamp.common.nio.Buffers;
import com.jogamp.junit.util.JunitTracer;
import static com.jogamp.common.util.BitstreamData.*;
import org.junit.FixMethodOrder;
import org.junit.runners.MethodSorters;
/**
* Test {@link Bitstream} w/ int16 read/write access w/ semantics
* as well as with aligned and unaligned access.
* <ul>
* <li>{@link Bitstream#readUInt16(boolean, boolean)}</li>
* <li>{@link Bitstream#writeInt16(boolean, boolean, short)}</li>
* </ul>
*/
@FixMethodOrder(MethodSorters.NAME_ASCENDING)
public class TestBitstream03 extends JunitTracer {
@Test
public void test01Int16BitsAligned() throws IOException {
test01Int16BitsImpl(null);
test01Int16BitsImpl(ByteOrder.BIG_ENDIAN);
test01Int16BitsImpl(ByteOrder.LITTLE_ENDIAN);
}
void test01Int16BitsImpl(ByteOrder byteOrder) throws IOException {
test01Int16BitsAlignedImpl(byteOrder, (short)0);
test01Int16BitsAlignedImpl(byteOrder, (short)1);
test01Int16BitsAlignedImpl(byteOrder, (short)7);
test01Int16BitsAlignedImpl(byteOrder, (short)0x0fff);
test01Int16BitsAlignedImpl(byteOrder, Short.MIN_VALUE);
test01Int16BitsAlignedImpl(byteOrder, Short.MAX_VALUE);
test01Int16BitsAlignedImpl(byteOrder, (short)0xffff);
}
void test01Int16BitsAlignedImpl(ByteOrder byteOrder, short val16) throws IOException {
// Test with buffer defined value
final ByteBuffer bb = ByteBuffer.allocate(Buffers.SIZEOF_SHORT);
if( null != byteOrder ) {
bb.order(byteOrder);
}
final boolean bigEndian = ByteOrder.BIG_ENDIAN == bb.order();
System.err.println("XXX Test01Int16BitsAligned: byteOrder "+byteOrder+" (bigEndian "+bigEndian+"), value "+val16+", "+toHexBinaryString(val16, 16));
bb.putShort(0, val16);
final Bitstream.ByteBufferStream bbs = new Bitstream.ByteBufferStream(bb);
final Bitstream<ByteBuffer> bs = new Bitstream<ByteBuffer>(bbs, false /* outputMode */);
{
final short r16 = (short) bs.readUInt16(true /* msbFirst */, bigEndian);
System.err.println("Read16.1 "+r16+", "+toHexBinaryString(r16, 16));
Assert.assertEquals(val16, r16);
}
// Test with written bitstream value
bs.setStream(bs.getSubStream(), true /* outputMode */);
bs.writeInt16(true /* msbFirst */, bigEndian, val16);
bs.setStream(bs.getSubStream(), false /* outputMode */); // switch to input-mode, implies flush()
{
final short r16 = (short) bs.readUInt16(true /* msbFirst */, bigEndian);
System.err.println("Read16.2 "+r16+", "+toHexBinaryString(r16, 16));
Assert.assertEquals(val16, r16);
}
}
@Test
public void test02Int16BitsUnaligned() throws IOException {
test02Int16BitsUnalignedImpl(null);
test02Int16BitsUnalignedImpl(ByteOrder.BIG_ENDIAN);
test02Int16BitsUnalignedImpl(ByteOrder.LITTLE_ENDIAN);
}
void test02Int16BitsUnalignedImpl(ByteOrder byteOrder) throws IOException {
test02Int16BitsUnalignedImpl(byteOrder, 0);
test02Int16BitsUnalignedImpl(byteOrder, 1);
test02Int16BitsUnalignedImpl(byteOrder, 7);
test02Int16BitsUnalignedImpl(byteOrder, 8);
test02Int16BitsUnalignedImpl(byteOrder, 15);
test02Int16BitsUnalignedImpl(byteOrder, 24);
test02Int16BitsUnalignedImpl(byteOrder, 25);
}
void test02Int16BitsUnalignedImpl(ByteOrder byteOrder, final int preBits) throws IOException {
test02Int16BitsUnalignedImpl(byteOrder, preBits, (short)0);
test02Int16BitsUnalignedImpl(byteOrder, preBits, (short)1);
test02Int16BitsUnalignedImpl(byteOrder, preBits, (short)7);
test02Int16BitsUnalignedImpl(byteOrder, preBits, (short)0x0fff);
test02Int16BitsUnalignedImpl(byteOrder, preBits, Short.MIN_VALUE);
test02Int16BitsUnalignedImpl(byteOrder, preBits, Short.MAX_VALUE);
test02Int16BitsUnalignedImpl(byteOrder, preBits, (short)0xffff);
}
void test02Int16BitsUnalignedImpl(ByteOrder byteOrder, int preBits, short val16) throws IOException {
final int preBytes = ( preBits + 7 ) >>> 3;
final int byteCount = preBytes + Buffers.SIZEOF_SHORT;
final ByteBuffer bb = ByteBuffer.allocate(byteCount);
if( null != byteOrder ) {
bb.order(byteOrder);
}
final boolean bigEndian = ByteOrder.BIG_ENDIAN == bb.order();
System.err.println("XXX Test02Int16BitsUnaligned: byteOrder "+byteOrder+" (bigEndian "+bigEndian+"), preBits "+preBits+", value "+val16+", "+toHexBinaryString(val16, 16));
// Test with written bitstream value
final Bitstream.ByteBufferStream bbs = new Bitstream.ByteBufferStream(bb);
final Bitstream<ByteBuffer> bs = new Bitstream<ByteBuffer>(bbs, true /* outputMode */);
bs.writeBits31(true /* msbFirst */, preBits, 0);
bs.writeInt16(true /* msbFirst */, bigEndian, val16);
bs.setStream(bs.getSubStream(), false /* outputMode */); // switch to input-mode, implies flush()
final int rPre = (short) bs.readBits31(true /* msbFirst */, preBits);
final short r16 = (short) bs.readUInt16(true /* msbFirst */, bigEndian);
System.err.println("ReadPre "+rPre+", "+toBinaryString(rPre, preBits));
System.err.println("Read16 "+r16+", "+toHexBinaryString(r16, 16));
Assert.assertEquals(val16, r16);
}
public static void main(String args[]) throws IOException {
String tstname = TestBitstream03.class.getName();
org.junit.runner.JUnitCore.main(tstname);
}
}
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