/**
* 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.BitDemoData.*;
import com.jogamp.junit.util.SingletonJunitCase;
import org.junit.FixMethodOrder;
import org.junit.runners.MethodSorters;
/**
* Test basic bit operations for {@link Bitstream}
*/
@FixMethodOrder(MethodSorters.NAME_ASCENDING)
public class TestBitstream00 extends SingletonJunitCase {
@Test
public void test00ShowByteOrder() {
final int i_ff = 0xff;
final 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(final 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(-2, -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;
}
}
}
@Test
public void test10ReadWrite_13() throws UnsupportedOperationException, IllegalStateException, IOException {
// H->L : 00000011 00000010 00000001 000000110000001000000001
// H->L rev: 10000000 01000000 11000000 100000000100000011000000
//
// L->H : 00000001 00000010 00000011 000000010000001000000011
// L->H rev: 11000000 01000000 10000000 110000000100000010000000
test10ReadWrite1_31Impl(8, 8, 8, 0x030201, "000000110000001000000001");
// H->L: 00011 000010 00001 0001100001000001
// L->H: 10000 010000 11000 1000001000011000
test10ReadWrite1_31Impl(5, 6, 5, 0x1841, "0001100001000001");
}
void test10ReadWrite1_31Impl(final int c1, final int c2, final int c3, final int v, final String vStrHigh2LowExp)
throws UnsupportedOperationException, IllegalStateException, IOException
{
// final Bitstream<ByteBuffer> source = new Bitstream<ByteBuffer>();
final int bitCount = c1+c2+c3;
final int byteCount = ( bitCount + 7 ) / 8;
final String vStrHigh2Low0 = Bitstream.toBinString(true, v, bitCount);
System.err.printf("test10ReadWrite31 bits %d:%d:%d = %d = %d bytes%n",
c1, c2, c3, bitCount, byteCount);
System.err.printf("test10ReadWrite31 %s%n", Bitstream.toHexBinString(true, v, bitCount));
System.err.printf("test10ReadWrite31 %s%n", Bitstream.toHexBinString(false, v, bitCount));
Assert.assertEquals(vStrHigh2LowExp, vStrHigh2Low0);
final ByteBuffer bbRead = ByteBuffer.allocate(byteCount);
for(int i=0; i<byteCount; i++) {
final int b = ( v >>> 8*i ) & 0xff;
bbRead.put(i, (byte) b);
System.err.printf("testBytes[%d]: %s%n", i, Bitstream.toHexBinString(true, b, 8));
}
final Bitstream.ByteBufferStream bbsRead = new Bitstream.ByteBufferStream(bbRead);
final Bitstream<ByteBuffer> bsRead = new Bitstream<ByteBuffer>(bbsRead, false /* outputMode */);
String vStrHigh2Low1C1 = "";
String vStrHigh2Low1C2 = "";
String vStrHigh2Low1C3 = "";
String vStrHigh2Low1 = "";
{
bsRead.mark(byteCount);
System.err.println("readBit (msbFirst false): ");
int b;
int i=0;
String vStrHigh2Low1T = ""; // OK for LSB, MSB segmented
while( Bitstream.EOS != ( b = bsRead.readBit(false /* msbFirst */) ) ) {
vStrHigh2Low1T = b + vStrHigh2Low1T;
if(i < c1) {
vStrHigh2Low1C1 = b + vStrHigh2Low1C1;
} else if(i < c1+c2) {
vStrHigh2Low1C2 = b + vStrHigh2Low1C2;
} else {
vStrHigh2Low1C3 = b + vStrHigh2Low1C3;
}
i++;
}
vStrHigh2Low1 = vStrHigh2Low1C3 + vStrHigh2Low1C2 + vStrHigh2Low1C1;
System.err.printf("readBit.1 %s, 0x%s%n", vStrHigh2Low1C1, Integer.toHexString(Integer.valueOf(vStrHigh2Low1C1, 2)));
System.err.printf("readBit.2 %s, 0x%s%n", vStrHigh2Low1C2, Integer.toHexString(Integer.valueOf(vStrHigh2Low1C2, 2)));
System.err.printf("readBit.3 %s, 0x%s%n", vStrHigh2Low1C3, Integer.toHexString(Integer.valueOf(vStrHigh2Low1C3, 2)));
System.err.printf("readBit.T %s, ok %b%n%n", vStrHigh2Low1T, vStrHigh2LowExp.equals(vStrHigh2Low1T));
System.err.printf("readBit.X %s, ok %b%n%n", vStrHigh2Low1, vStrHigh2LowExp.equals(vStrHigh2Low1));
bsRead.reset();
}
{
String vStrHigh2Low3T = ""; // OK for LSB, MSB segmented
System.err.println("readBits32: ");
final int b = bsRead.readBits31(bitCount);
vStrHigh2Low3T = Bitstream.toBinString(true, b, bitCount);
System.err.printf("readBits31.T %s, ok %b, %s%n%n", vStrHigh2Low3T, vStrHigh2LowExp.equals(vStrHigh2Low3T), Bitstream.toHexBinString(true, b, bitCount));
bsRead.reset();
}
String vStrHigh2Low2 = "";
{
System.err.println("readBits32: ");
final int bC1 = bsRead.readBits31(c1);
System.err.printf("readBits31.1 %s%n", Bitstream.toHexBinString(true, bC1, c1));
final int bC2 = bsRead.readBits31(c2);
System.err.printf("readBits31.2 %s%n", Bitstream.toHexBinString(true, bC2, c2));
final int bC3 = bsRead.readBits31(c3);
System.err.printf("readBits31.3 %s%n", Bitstream.toHexBinString(true, bC3, c3));
final int b = bC3 << (c1+c2) | bC2 << c1 | bC1;
vStrHigh2Low2 = Bitstream.toBinString(true, b, bitCount);
System.err.printf("readBits31.X %s, ok %b, %s%n%n", vStrHigh2Low2, vStrHigh2LowExp.equals(vStrHigh2Low2), Bitstream.toHexBinString(true, b, bitCount));
bsRead.reset();
}
Assert.assertEquals(vStrHigh2LowExp, vStrHigh2Low1);
Assert.assertEquals(vStrHigh2LowExp, vStrHigh2Low2);
boolean ok = true;
{
final ByteBuffer bbWrite = ByteBuffer.allocate(byteCount);
final Bitstream.ByteBufferStream bbsWrite = new Bitstream.ByteBufferStream(bbWrite);
final Bitstream<ByteBuffer> bsWrite = new Bitstream<ByteBuffer>(bbsWrite, true /* outputMode */);
{
int b;
while( Bitstream.EOS != ( b = bsRead.readBit(false)) ) {
bsWrite.writeBit(false, b);
}
}
bsRead.reset();
for(int i=0; i<byteCount; i++) {
final int bR = bbWrite.get(i);
final int bW = bbWrite.get(i);
System.err.printf("readWriteBit [%d]: read %s, write %s, ok %b%n",
i, Bitstream.toHexBinString(true, bR, 8), Bitstream.toHexBinString(true, bW, 8), bR==bW);
ok = ok && bR==bW;
}
Assert.assertTrue(ok);
}
{
final ByteBuffer bbWrite = ByteBuffer.allocate(byteCount);
final Bitstream.ByteBufferStream bbsWrite = new Bitstream.ByteBufferStream(bbWrite);
final Bitstream<ByteBuffer> bsWrite = new Bitstream<ByteBuffer>(bbsWrite, true /* outputMode */);
{
bsWrite.writeBits31(bitCount, bsRead.readBits31(bitCount));
}
bsRead.reset();
for(int i=0; i<byteCount; i++) {
final int bR = bbWrite.get(i);
final int bW = bbWrite.get(i);
System.err.printf("readWriteBits31[%d]: read %s, write %s, ok %b%n",
i, Bitstream.toHexBinString(true, bR, 8), Bitstream.toHexBinString(true, bW, 8), bR==bW);
ok = ok && bR==bW;
}
Assert.assertTrue(ok);
}
}
public static void main(final String args[]) throws IOException {
final String tstname = TestBitstream00.class.getName();
org.junit.runner.JUnitCore.main(tstname);
}
}