-
Notifications
You must be signed in to change notification settings - Fork 5
/
BitstreamTest.cpp
255 lines (235 loc) · 7.91 KB
/
BitstreamTest.cpp
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
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
#include "Bitstream.h"
#define CATCH_CONFIG_MAIN
#include "catch.hpp"
TEST_CASE("BitstreamTest: read bits from stream", "[getters]")
{
SECTION("bits in 1 byte (8 bit width)")
{
uint8_t data[1];
BitstreamReader* bs = new BitstreamReader(data, 1);
// +----------+
// |1|000 0000|
// +----------+
SECTION("getOneBit")
{
data[0] = 1 << 7;
REQUIRE(0b1 == bs->get<1>());
}
// +----------+
// |11|00 0000|
// +----------+
SECTION("getMultipleBit")
{
data[0] = 1 << 7 | 1 << 6;
REQUIRE(0b11 == bs->get<2>());
}
// +-----------+
// |10|01 01|11|
// +-----------+
SECTION("getMultipleBitSegments")
{
data[0] = 0b10010111;
REQUIRE(0b10 == bs->get<2>());
REQUIRE(0b0101 == bs->get<4>());
REQUIRE(0b11 == bs->get<2>());
}
delete bs;
}
SECTION("bits in 2 byte (16 bit width)")
{
uint8_t data[2];
BitstreamReader bs(data, 2);
// +---------+----------+
// |0000 0011 10|00 0000|
// +---------+----------+
SECTION("getBitsIn2Bytes")
{
data[0] = 0b00000011;
data[1] = 0b10000000;
REQUIRE(0b1110 == bs.get<10>());
}
// +---------+----------+
// |0000 0011 10|10 1110|
// +---------+----------+
SECTION("getBitsIn2BytesMultipleTimes")
{
data[0] = 0b00000011;
data[1] = 0b10101110;
REQUIRE(0b1110 == bs.get<10>());
REQUIRE(0b101110 == bs.get<6>());
}
}
// +---------+----------+---------+----------+
// |0000 0000 0000 00|10 0000 0011 1000 00|00|
// +---------+----------+---------+----------+
SECTION("multiple bits")
{
uint8_t data[4];
BitstreamReader bs(data, 4);
data[0] = 0b00000000;
data[1] = 0b00000010;
data[2] = 0b00000011;
data[3] = 0b10000000;
SECTION("getBitsInMultipleBytes")
{
bs.get<14>(); // throw away
REQUIRE(0b1000000011100000 == bs.get<16>());
}
SECTION("getFromTheMiddle")
{
REQUIRE(0b1000000011100000 == bs.getWithOffset<16>(14));
REQUIRE(0b1000000011100000 == bs.getWithOffset<16>(14));//second get should still get the same result
bs.get<14>(); // throw away
REQUIRE(0b1000000011100000 == bs.get<16>());//make sure mutable API still works
}
}
// 0 1 2 3 4 5 6 7
// +-----------+------------+-----------+-----------+---------+---------+---------+---------+
// |000|1 11|00 0|111|00 0|1 11|00 0|111|000|1 11|00 0001 1100 0111 0001 1100 0111 0001|1100|
// +-----------+------------+-----------+-----------+---------+---------+---------+---------+
// | a | b | c | d | e | f | g | h | i | j | k | l |
SECTION("getComplexExample")
{
uint8_t data[8];
BitstreamReader bs(data, 8);
data[0] = 0b00011100;
data[1] = 0b01110001;
data[2] = 0b11000111;
data[3] = 0b00011100;
data[4] = 0b00011100;
data[5] = 0b01110001;
data[6] = 0b11000111;
data[7] = 0b00011100;
REQUIRE(0b000 == bs.get<3>());
REQUIRE(0b111 == bs.get<3>());
REQUIRE(0b000 == bs.get<3>());
REQUIRE(0b111 == bs.get<3>());
REQUIRE(0b000 == bs.get<3>());
REQUIRE(0b111 == bs.get<3>());
REQUIRE(0b000 == bs.get<3>());
REQUIRE(0b111 == bs.get<3>());
REQUIRE(0b000 == bs.get<3>());
REQUIRE(0b111 == bs.get<3>());
REQUIRE(0b000001110001110001110001110001 == bs.get<30>());
REQUIRE(0b1100 == bs.get<4>());
}
}
TEST_CASE("BitstreamTest: write bits to stream", "[setters]")
{
SECTION("up to one byte width")
{
uint8_t data[1];
BitstreamWriter bs(data, 1);
// +----------+
// |1|--- ----|
// +----------+
SECTION("putOneBit")
{
bs.put<1>(1);
REQUIRE(0b10000000 == data[0]);
}
// +-----------+
// |0|1|00 0000|
// +-----------+
SECTION("putOneBitButUseToBigData")
{
bs.put<1>(0);
bs.put<1>(0xFF);
REQUIRE(0b01000000 == data[0]);
}
// +----------+
// |11|10 1000|
// +----------+
SECTION("putTwiceInFirstByte")
{
bs.put<2>(0b11);
bs.put<3>(0b101);
REQUIRE(0b11101000 == data[0]);
}
}
// +---------+---------+
// |1111 0000 1111|0000|
// +---------+---------+
SECTION("putMoreThan8bits")
{
uint8_t data[2];
BitstreamWriter bs(data, 2);
bs.put<12>(0xF0F);
REQUIRE(0b11110000 == data[0]);
REQUIRE(0b11110000 == data[1]);
}
// +---------+---------+---------+----------+
// |0000 0001 0001 0010 0000 0011 1000 00|--|
// +---------+---------+---------+----------+
SECTION("putMoreThanIn2bytes")
{
uint8_t data[4];
BitstreamWriter bs(data, 4);
bs.put<30>(0b000000010001001000000011100000);
REQUIRE( 0b00000001 == data[0]);
REQUIRE( 0b00010010 == data[1]);
REQUIRE( 0b00000011 == data[2]);
REQUIRE( 0b10000000 == data[3]);
}
// +----------+---------+---------+----------+---------+
// |01|10 1101 0101|0010 0100 0011 1|000 1101|1000 0110|
// +----------+---------+---------+----------+---------+
SECTION("putComplexExample")
{
// 11|100111011|0010010000111|001101|1000110
uint8_t data[5];
BitstreamWriter bs(data, 5);
bs.put<2>(0b11); // 11
bs.put<9>(0b100111011); // 11|10 0111 011
bs.put<13>(0b0010010000111);// 11|10 0111 011|0 01001 0000 111
bs.put<6>(0b001101); // 11|10 0111 011|0 01001 0000 111|0 0110 1
bs.put<7>(0b1000110); // 11|10 0111 011|0 01001 0000 111|0 0110 1|100 0110
REQUIRE( 0b11100111 == data[0]);
REQUIRE( 0b01100100 == data[1]);
REQUIRE( 0b10000111 == data[2]);
REQUIRE( 0b00110110 == data[3]);
REQUIRE( 0b00110000 == data[4]);
}
// +---------+---------+---------+---------+---------+---------+---------+---------+---------+
// |0110|1101 0101 0010 0100 0011 1000 1101 1000 0110 0101 0010 0100 0011 1000 1101 1000|0110|
// +---------+---------+---------+---------+---------+---------+---------+---------+---------+
SECTION("put64Bit")
{
uint8_t data[9];
BitstreamWriter bs(data, 9);
bs.put<4>(0b0110);
bs.put<64>(0b1101010100100100001110001101100001100101001001000011100011011000);
bs.put<4>(0b0110);
REQUIRE( 0b01101101 == data[0]);
REQUIRE( 0b01010010 == data[1]);
REQUIRE( 0b01000011 == data[2]);
REQUIRE( 0b10001101 == data[3]);
REQUIRE( 0b10000110 == data[4]);
REQUIRE( 0b01010010 == data[5]);
REQUIRE( 0b01000011 == data[6]);
REQUIRE( 0b10001101 == data[7]);
REQUIRE( 0b10000110 == data[8]);
}
SECTION("putAndGetFun")
{
uint8_t data[20];
BitstreamReader bsr(data, 20);
BitstreamWriter bsw(data, 20);
uint8_t a = 0b0110;
uint64_t b = 0b1101010100100100001110001101100001100101001001000011100011011000;
uint8_t c = 0b10110;
uint16_t d = 0b1001010110;
uint32_t e = 0b11011011001010110;
bsw.put<4>(a);
bsw.put<64>(b);
bsw.put<5>(c);
bsw.put<10>(d);
bsw.put<17>(e);
REQUIRE(bsr.get<4>() == a);
REQUIRE(bsr.get<64>() == b);
REQUIRE(bsr.get<5>() == c);
REQUIRE(bsr.get<10>() == d);
REQUIRE(bsr.get<17>() == e);
}
}
// TEST_F(BitstreamTest, putMoreThanWriterCanTake) TODO