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
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
// unit-test-byte-encode.cpp
#include "../../source/core/slang-byte-encode-util.h"
#include "../../source/core/slang-list.h"
#include "../../source/core/slang-random-generator.h"
#include "unit-test/slang-unit-test.h"
#include <stdio.h>
#include <stdlib.h>
using namespace Slang;
static void checkUInt32(uint32_t value)
{
uint8_t buffer[ByteEncodeUtil::kMaxLiteEncodeUInt32 + 1];
int writeLen = ByteEncodeUtil::encodeLiteUInt32(value, buffer);
buffer[writeLen] = 0xcd;
uint32_t decode;
int readLen = ByteEncodeUtil::decodeLiteUInt32(buffer, &decode);
SLANG_CHECK(readLen == writeLen && decode == value);
}
SLANG_UNIT_TEST(byteEncode)
{
DefaultRandomGenerator randGen(0x5346536a);
{
SLANG_CHECK(ByteEncodeUtil::calcMsb8(0) == -1);
SLANG_CHECK(ByteEncodeUtil::calcMsb8(1) == 0);
SLANG_CHECK(ByteEncodeUtil::calcMsb8(0x81) == 7);
}
{
SLANG_CHECK(ByteEncodeUtil::calcMsb32(0) == -1);
SLANG_CHECK(ByteEncodeUtil::calcMsb32(0x81) == 7);
SLANG_CHECK(ByteEncodeUtil::calcMsb32(0x00000001) == 0);
SLANG_CHECK(ByteEncodeUtil::calcMsb32(0x00000081) == 7);
SLANG_CHECK(ByteEncodeUtil::calcMsb32(0x00000181) == 8);
SLANG_CHECK(ByteEncodeUtil::calcMsb32(0x00008181) == 15);
SLANG_CHECK(ByteEncodeUtil::calcMsb32(0x00018181) == 16);
SLANG_CHECK(ByteEncodeUtil::calcMsb32(0x00818181) == 23);
SLANG_CHECK(ByteEncodeUtil::calcMsb32(0x01818181) == 24);
SLANG_CHECK(ByteEncodeUtil::calcMsb32(0x81818181) == 31);
SLANG_CHECK(ByteEncodeUtil::calcMsb32(0xffffffff) == 31);
}
{
SLANG_CHECK(ByteEncodeUtil::calcMsByte32(0x00000000) == -1);
SLANG_CHECK(ByteEncodeUtil::calcMsByte32(0x00000001) == 0);
SLANG_CHECK(ByteEncodeUtil::calcMsByte32(0x00000081) == 0);
SLANG_CHECK(ByteEncodeUtil::calcMsByte32(0x00000181) == 1);
SLANG_CHECK(ByteEncodeUtil::calcMsByte32(0x00008181) == 1);
SLANG_CHECK(ByteEncodeUtil::calcMsByte32(0x00018181) == 2);
SLANG_CHECK(ByteEncodeUtil::calcMsByte32(0x00818181) == 2);
SLANG_CHECK(ByteEncodeUtil::calcMsByte32(0x01818181) == 3);
SLANG_CHECK(ByteEncodeUtil::calcMsByte32(0x81818181) == 3);
SLANG_CHECK(ByteEncodeUtil::calcMsByte32(0xffffffff) == 3);
}
{
SLANG_CHECK(ByteEncodeUtil::calcNonZeroMsByte32(0x00000001) == 0);
SLANG_CHECK(ByteEncodeUtil::calcNonZeroMsByte32(0x00000081) == 0);
SLANG_CHECK(ByteEncodeUtil::calcNonZeroMsByte32(0x00000181) == 1);
SLANG_CHECK(ByteEncodeUtil::calcNonZeroMsByte32(0x00008181) == 1);
SLANG_CHECK(ByteEncodeUtil::calcNonZeroMsByte32(0x00018181) == 2);
SLANG_CHECK(ByteEncodeUtil::calcNonZeroMsByte32(0x00818181) == 2);
SLANG_CHECK(ByteEncodeUtil::calcNonZeroMsByte32(0x01818181) == 3);
SLANG_CHECK(ByteEncodeUtil::calcNonZeroMsByte32(0x81818181) == 3);
SLANG_CHECK(ByteEncodeUtil::calcNonZeroMsByte32(0xffffffff) == 3);
}
{
const int blockSize = 1024;
List<uint8_t> encodedBuffer;
encodedBuffer.setCount(ByteEncodeUtil::kMaxLiteEncodeUInt32 * blockSize);
List<uint32_t> initialBuffer;
initialBuffer.setCount(blockSize);
List<uint32_t> decodeBuffer;
decodeBuffer.setCount(blockSize);
// Put in cache?
memset(decodeBuffer.begin(), 0, blockSize * sizeof(uint32_t));
for (int i = 0; i < blockSize; i++)
{
const int v = ByteEncodeUtil::calcMsb8(uint32_t((randGen.nextInt32() & 0xf) | 1));
// Make the commonality of different numbers that bytes are most common, then shorts
// etc..
uint32_t mask;
switch (v)
{
case 0:
mask = 0xffffffff;
break;
case 1:
mask = 0x00ffffff;
break;
case 2:
mask = 0x0000ffff;
break;
case 3:
mask = 0x000000ff;
break;
}
initialBuffer[i] = randGen.nextInt32() & mask;
}
size_t numEncodeBytes = ByteEncodeUtil::encodeLiteUInt32(
initialBuffer.begin(),
blockSize,
encodedBuffer.begin());
SLANG_CHECK(
ByteEncodeUtil::calcEncodeLiteSizeUInt32(initialBuffer.begin(), blockSize) ==
numEncodeBytes);
size_t numEncodeBytes2 = ByteEncodeUtil::decodeLiteUInt32(
encodedBuffer.begin(),
blockSize,
decodeBuffer.begin());
SLANG_CHECK(numEncodeBytes2 == numEncodeBytes);
SLANG_CHECK(
memcmp(decodeBuffer.begin(), initialBuffer.begin(), sizeof(uint32_t) * blockSize) == 0);
}
{
checkUInt32(uint32_t(0));
checkUInt32(uint32_t(0x7fffff));
checkUInt32(uint32_t(0x7fff));
checkUInt32(uint32_t(0x7f));
checkUInt32(uint32_t(0x7fffffff));
checkUInt32(uint32_t(0xffffffff));
#if 1
for (int64_t i = 0; i < SLANG_INT64(0x100000000); i += 371)
{
checkUInt32(uint32_t(i));
}
#else
for (int64_t i = 0; i < SLANG_INT64(0x100000000); i += 1)
{
checkUInt32(uint32_t(i));
}
#endif
}
}
|
