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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 java.nio.IntBuffer;
import java.nio.LongBuffer;
import org.junit.Test;
import org.junit.Assert;
import com.jogamp.common.nio.Buffers;
import com.jogamp.common.os.Platform;
import static com.jogamp.common.util.BitstreamData.*;
import com.jogamp.junit.util.JunitTracer;
import org.junit.FixMethodOrder;
import org.junit.runners.MethodSorters;
/**
* Test basic bit operations for {@link Bitstream}
*/
@FixMethodOrder(MethodSorters.NAME_ASCENDING)
public class TestBitstream00 extends JunitTracer {
@Test
public void test00ShowByteOrder() {
int i_ff = 0xff;
byte b_ff = (byte)i_ff;
System.err.println("i_ff "+i_ff+", "+toHexBinaryString(i_ff, 8));
System.err.println("b_ff "+b_ff+", "+toHexBinaryString(0xff & b_ff, 8));
System.err.println("Platform.LITTLE_ENDIAN: "+Platform.isLittleEndian());
showOrderImpl(null);
showOrderImpl(ByteOrder.BIG_ENDIAN);
showOrderImpl(ByteOrder.LITTLE_ENDIAN);
dumpData("tstMSB.whole", testBytesMSB, 0, testBytesMSB.length);
dumpData("tstLSB.pbyte", testBytesLSB_revByte, 0, testBytesLSB_revByte.length);
dumpData("tstLSB.whole", testBytesLSB, 0, testBytesLSB.length);
}
void showOrderImpl(ByteOrder byteOrder) {
final ByteBuffer bb_long = ByteBuffer.allocate(Buffers.SIZEOF_LONG);
if( null != byteOrder ) {
bb_long.order(byteOrder);
}
System.err.println("Order: "+byteOrder+" -> "+bb_long.order());
final LongBuffer lb = bb_long.asLongBuffer();
lb.put(0, 0x0807060504030201L);
dumpData("long."+byteOrder, bb_long, 0, bb_long.capacity());
final ByteBuffer bb_int = ByteBuffer.allocate(Buffers.SIZEOF_INT);
if( null != byteOrder ) {
bb_int.order(byteOrder);
}
final IntBuffer ib = bb_int.asIntBuffer();
ib.put(0, 0x04030201);
dumpData("long."+byteOrder, bb_int, 0, bb_int.capacity());
dumpData("tstMSB.whole", testBytesMSB, 0, testBytesMSB.length);
dumpData("tstLSB.pbyte", testBytesLSB_revByte, 0, testBytesLSB_revByte.length);
dumpData("tstLSB.whole", testBytesLSB, 0, testBytesLSB.length);
}
@Test
public void test01Uint32Conversion() {
testUInt32Conversion(1, 1);
testUInt32Conversion(Integer.MAX_VALUE, Integer.MAX_VALUE);
testUInt32Conversion(0xffff0000, -1);
testUInt32Conversion(0xffffffff, -1);
}
void testUInt32Conversion(final int int32, final int expUint32Int) {
final String int32_hStr = toHexString(int32);
final long l = Bitstream.toUInt32Long(int32);
final String l_hStr = toHexString(l);
final int i = Bitstream.toUInt32Int(int32);
final String i_hStr = toHexString(i);
System.err.printf("int32_t %012d %10s -> (long) %012d %10s, (int) %012d %10s%n", int32, int32_hStr, l, l_hStr, i, i_hStr);
Assert.assertEquals(int32_hStr, l_hStr);
Assert.assertEquals(expUint32Int, i);
}
@Test
public void test02ShiftSigned() {
shiftSigned(0xA0000000); // negative w/ '1010' top-nibble
shiftSigned(-1);
}
void shiftSigned(final int i0) {
System.err.printf("i0 %012d, %s%n", i0, toHexBinaryString(i0, 32));
{
int im = i0;
for(int i=0; i<32; i++) {
final int bitA = ( 0 != ( i0 & ( 1 << i ) ) ) ? 1 : 0;
final int bitB = im & 0x01;
System.err.printf("[%02d]: bit[%d, %d], im %012d, %s%n", i, bitA, bitB, im, toHexBinaryString(im, 32));
im = im >>> 1;
}
}
}
public static void main(String args[]) throws IOException {
String tstname = TestBitstream00.class.getName();
org.junit.runner.JUnitCore.main(tstname);
}
}
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