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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/>.
*/
#pragma once
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <unistd.h>
#include <vector>
#include <memory>
/* Buffer is a container for a byte array, which is memory-aligned
* to 32 bytes for SSE performance.
*
* The allocation/freeing of the data is handled internally.
*/
class Buffer {
public:
using sptr = std::shared_ptr<Buffer>;
Buffer(size_t len = 0, const void *data = nullptr);
Buffer(const Buffer& other);
Buffer(Buffer&& other);
Buffer(const std::vector<uint8_t>& vec);
~Buffer();
void swap(Buffer& other);
/* Resize the buffer, reallocate memory if needed */
void setLength(size_t len);
/* Replace the data in the Buffer by the new data given.
* Reallocates memory if needed. */
void setData(const void *data, size_t len);
Buffer& operator=(const Buffer& other);
Buffer& operator=(Buffer&& other);
Buffer& operator=(const std::vector<uint8_t>& buf);
uint8_t operator[](size_t i) const;
/* Concatenate the current data with the new data given.
* Reallocates memory if needed. */
void appendData(const void *data, size_t len);
Buffer& operator+=(const Buffer& other);
size_t getLength() const { return m_len; }
void* getData() const { return m_data; }
private:
/* Current length of the data in the Buffer */
size_t m_len;
/* Allocated size of the Buffer */
size_t m_capacity;
/* Pointer to the data. Memory allocation is entirely
* handled by setLength. */
void *m_data;
};
void swap(Buffer& buf1, Buffer& buf2);
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