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Diffstat (limited to 'src/junit/com/jogamp/common/util/TestBitstream03.java')
-rw-r--r-- | src/junit/com/jogamp/common/util/TestBitstream03.java | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/src/junit/com/jogamp/common/util/TestBitstream03.java b/src/junit/com/jogamp/common/util/TestBitstream03.java new file mode 100644 index 0000000..7eb89e7 --- /dev/null +++ b/src/junit/com/jogamp/common/util/TestBitstream03.java @@ -0,0 +1,154 @@ +/** + * 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#readInt16(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.readInt16(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.readInt16(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.readInt16(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); + } + +} |