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
|
/*
Copyright (C) 2011
Her Majesty the Queen in Right of Canada (Communications Research
Center Canada)
Copyright (C) 2018
Matthias P. Braendli, matthias.braendli@mpb.li
http://opendigitalradio.org
*/
/*
This file is part of ODR-DabMod.
ODR-DabMod is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
ODR-DabMod is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with ODR-DabMod. If not, see <http://www.gnu.org/licenses/>.
*/
#include "Buffer.h"
#include "PcDebug.h"
#include <string>
#include <stdexcept>
#include <cstdlib>
#include <cstring>
Buffer::Buffer(size_t len, const void *data)
{
PDEBUG("Buffer::Buffer(%zu, %p)\n", len, data);
m_len = 0;
m_capacity = 0;
m_data = nullptr;
setData(data, len);
}
Buffer::Buffer(const Buffer& other)
{
setData(other.m_data, other.m_len);
}
Buffer::Buffer(Buffer&& other)
{
m_len = other.m_len;
m_capacity = other.m_capacity;
m_data = other.m_data;
other.m_len = 0;
other.m_capacity = 0;
other.m_data = nullptr;
}
Buffer::Buffer(const std::vector<uint8_t>& vec)
{
PDEBUG("Buffer::Buffer(vector [%zu])\n", vec.size());
m_len = 0;
m_capacity = 0;
m_data = nullptr;
setData(vec.data(), vec.size());
}
Buffer::~Buffer()
{
PDEBUG("Buffer::~Buffer() len=%zu, data=%p\n", m_len, m_data);
if (m_data) {
free(m_data);
}
}
void Buffer::swap(Buffer& other)
{
std::swap(m_len, other.m_len);
std::swap(m_capacity, other.m_capacity);
std::swap(m_data, other.m_data);
}
Buffer& Buffer::operator=(const Buffer& other)
{
if (&other != this) {
setData(other.m_data, other.m_len);
}
return *this;
}
Buffer& Buffer::operator=(Buffer&& other)
{
if (&other != this) {
m_len = other.m_len;
m_capacity = other.m_capacity;
if (m_data != nullptr) {
free(m_data);
}
m_data = other.m_data;
other.m_len = 0;
other.m_capacity = 0;
other.m_data = nullptr;
}
return *this;
}
Buffer& Buffer::operator=(const std::vector<uint8_t>& buf)
{
setData(buf.data(), buf.size());
return *this;
}
Buffer& Buffer::operator+=(const Buffer& other)
{
appendData(other.m_data, other.m_len);
return *this;
}
void Buffer::setLength(size_t len)
{
if (len > m_capacity) {
void *tmp = m_data;
/* Align to 32-byte boundary for AVX. */
const int ret = posix_memalign(&m_data, 32, len);
if (ret != 0) {
throw std::runtime_error("memory allocation failed: " +
std::to_string(ret));
}
if (tmp != nullptr) {
memcpy(m_data, tmp, m_len);
free(tmp);
}
m_capacity = len;
}
m_len = len;
}
void Buffer::setData(const void *data, size_t len)
{
setLength(0);
appendData(data, len);
}
uint8_t Buffer::operator[](size_t i) const
{
if (i >= m_len) {
throw std::out_of_range("index out of range");
}
return reinterpret_cast<uint8_t*>(m_data)[i];
}
void Buffer::appendData(const void *data, size_t len)
{
size_t offset = m_len;
setLength(m_len + len);
if (data != nullptr) {
memcpy((char*)m_data + offset, data, len);
}
}
void swap(Buffer& buf1, Buffer& buf2)
{
buf1.swap(buf2);
}
|
