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/*
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 <stdlib.h>
#include <string.h>
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);
}
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