kopia lustrzana https://github.com/f4exb/sdrangel
269 wiersze
8.3 KiB
C
269 wiersze
8.3 KiB
C
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///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2016 Edouard Griffiths, F4EXB //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#ifndef SDRBASE_UTIL_DOUBLEBUFFERMULTIPLE_H_
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#define SDRBASE_UTIL_DOUBLEBUFFERMULTIPLE_H_
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#include <vector>
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#include <algorithm>
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#include <QByteArray>
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#include "simpleserializer.h"
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template<typename T>
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class DoubleBufferMultiple
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{
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public:
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DoubleBufferMultiple()
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{
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m_size = 0;
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m_currentPosition = 0;
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m_current = m_data.end();
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}
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~DoubleBufferMultiple() {}
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DoubleBufferMultiple(const DoubleBufferMultiple& other)
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{
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m_size = other.m_size;
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m_data.resize(other.m_data.size());
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m_current.resize(other.m_data.size());
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m_currentPosition = 0;
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for (unsigned int i = 0; i < other.m_data.size(); i++)
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{
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m_data[i] = other.m_data[i];
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m_current[i] = m_data[i].begin();
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}
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}
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DoubleBufferMultiple& operator=(const DoubleBufferMultiple& other)
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{
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if (&other == this) {
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return *this;
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}
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m_size = other.m_size;
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m_data.resize(other.m_data.size());
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m_current.resize(other.m_data.size());
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m_currentPosition = 0;
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for (unsigned int i = 0; i < other.m_data.size(); i++)
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{
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m_data[i] = other.m_data[i];
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m_current[i] = m_data[i].begin();
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}
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return *this;
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}
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void resize(int size)
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{
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m_size = size;
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m_currentPosition = 0;
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for (unsigned int i = 0; i < m_data.size(); i++)
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{
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m_data[i].resize(2*size);
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m_current[i] = m_data[i].begin();
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}
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}
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void addStream()
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{
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m_data.push_back(std::vector<T>(2*m_size));
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m_current.push_back(std::vector<T>::iterator());
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m_current.back() = m_data.back().begin();
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}
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void write(const std::vector<typename std::vector<T>::const_iterator>& vbegin, int length)
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{
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int insize = length > m_size ? m_size : length;
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if ((m_currentPosition + insize) > m_size)
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{
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int sizeLeft = m_size - m_currentPosition;
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m_currentPosition = insize - sizeLeft;
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}
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else
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{
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m_currentPosition += insize;
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}
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for (unsigned int i = 0; i < vbegin.size(); i++)
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{
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if (i >= m_data.size()) {
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break;
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}
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std::copy(vbegin[i], vbegin[i] + insize, m_current[i]);
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if (((m_current[i] - m_data[i].begin()) + insize) > m_size)
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{
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int sizeLeft = m_size - (m_current[i] - m_data[i].begin());
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std::copy(vbegin[i], vbegin[i] + sizeLeft, m_current[i] + m_size);
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std::copy(vbegin[i] + sizeLeft, vbegin[i] + insize, m_data[i].begin());
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m_current[i] = m_data[i].begin() + (insize - sizeLeft);
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}
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else
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{
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std::copy(vbegin[i], vbegin[i] + insize, m_current[i] + m_size);
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m_current[i] += insize;
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}
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}
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}
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// void write(const typename std::vector<T>::const_iterator& begin, const typename std::vector<T>::const_iterator& cend)
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// {
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// typename std::vector<T>::const_iterator end = cend;
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// if ((end - begin) > m_size) {
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// end = begin + m_size;
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// }
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// int insize = end - begin;
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// std::copy(begin, end, m_current);
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// if (((m_current - m_data.begin()) + insize) > m_size)
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// {
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// int sizeLeft = m_size - (m_current - m_data.begin());
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// std::copy(begin, begin + sizeLeft, m_current + m_size);
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// std::copy(begin + sizeLeft, end, m_data.begin());
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// m_current = m_data.begin() + (insize - sizeLeft);
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// }
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// else
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// {
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// std::copy(begin, end, m_current + m_size);
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// m_current += insize;
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// }
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// }
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typename std::vector<T>::iterator getCurrent(unsigned int i) const { return m_current[i] + m_size; }
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typename std::vector<T>::const_iterator begin(unsigned int i) const { return m_data[i].begin(); }
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typename std::vector<T>::iterator begin(unsigned int i) { return m_data[i].begin(); }
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unsigned int absoluteFill(unsigned int i) const { return m_current[i] - m_data[i].begin(); }
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void reset(unsigned int i) { m_current[i] = m_data[i].begin(); }
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void getCurrent(std::vector<typename std::vector<T>::iterator>& vcurrent) const
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{
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vcurrent.clear();
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for (unsigned int i = 0; i < m_data.size(); i++) {
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vcurrent.push_back(m_data[i].begin() + m_currentPosition + m_size);
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}
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}
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int getCurrentPosition() const {
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return m_currentPosition + m_size;
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}
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void begin(typename std::vector<typename std::vector<T>::const_iterator>& vbegin) const
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{
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vbegin.clear();
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for (unsigned int i = 0; i < m_data.size(); i++) {
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vbegin.push_back(m_data[i].begin());
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}
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}
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void begin(typename std::vector<typename std::vector<T>::iterator>& vbegin)
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{
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vbegin.clear();
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for (unsigned int i = 0; i < m_data.size(); i++) {
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vbegin.push_back(m_data[i].begin());
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}
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}
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unsigned int absoluteFill() const { return m_currentPosition; }
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void reset()
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{
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m_currentPosition = 0;
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for (unsigned int i = 0; i < m_current.size(); i++) {
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m_current[i] = m_data[i].begin();
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}
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}
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QByteArray serialize() const
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{
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SimpleSerializer s(1);
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s.writeU32(1, std::min(m_data.size(), 10U));
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s.writeS32(2, m_size);
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for (unsigned int i = 0; i < std::min(m_data.size(), 10U); i++)
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{
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QByteArray buf(reinterpret_cast<const char*>(m_data[i].data()), m_data[i].size()*sizeof(T));
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s.writeU32(10*i + 11, m_current[i] - m_data[i].begin());
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s.writeBlob(10*i + 12, buf);
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}
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return s.final();
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}
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bool deserialize(const QByteArray& data)
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{
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SimpleDeserializer d(data);
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if(!d.isValid()) {
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return false;
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}
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if (d.getVersion() == 1)
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{
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unsigned int tmpUInt;
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unsigned int nbStreams;
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QByteArray buf;
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d.readU32(1, &nbStreams, 0);
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nbStreams = nbStreams > 10 ? 10 : nbStreams;
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m_data.resize(nbStreams);
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m_current.resize(nbStreams);
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d.readS32(2, &m_size, 0);
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for (unsigned int i = 0; i < nbStreams; i++)
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{
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m_data.resize(2*m_size);
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d.readU32(10*i + 11, &tmpUInt, 0);
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d.readBlob(10*i + 12, &buf);
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m_current[i] = m_data[i].begin() + tmpUInt;
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memcpy(reinterpret_cast<char *>(m_data[i].data()), buf.data(), buf.size());
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//qDebug("DoubleBufferMutiple::deserialize: i: %u m_data.size(): %u buf.size(): %d", i, m_data[i].size(), buf.size());
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//std::copy(reinterpret_cast<char *>(m_data.data()), buf.data(), buf.data() + buf.size()); // bug
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}
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return true;
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}
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else
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{
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return false;
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}
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}
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private:
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int m_size;
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std::vector<std::vector<T>> m_data;
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std::vector<typename std::vector<T>::iterator> m_current;
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int m_currentPosition;
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};
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#endif /* SDRBASE_UTIL_DOUBLEBUFFERMULTIPLE_H_ */
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