1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
|
/**
* 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(-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;
}
}
}
public static void main(String args[]) throws IOException {
String tstname = TestBitstream00.class.getName();
org.junit.runner.JUnitCore.main(tstname);
}
}
|
