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sdrangel/sdrbase/dsp/datafifo.h

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///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2020 F4EXB //
// written by Edouard Griffiths //
// //
// This program 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 as version 3 of the License, or //
// (at your option) any later version. //
// //
// This program 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 V3 for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#ifndef INCLUDE_DATAFIFO_H
#define INCLUDE_DATAFIFO_H
#include <QObject>
#include <QRecursiveMutex>
#include <QElapsedTimer>
#include <QByteArray>
#include "dsp/dsptypes.h"
#include "export.h"
class SDRBASE_API DataFifo : public QObject {
Q_OBJECT
public:
enum DataType
{
DataTypeI16, //!< 16 bit signed integer
DataTypeCI16 //!< Complex (i.e. Re, Im pair of) 16 bit signed integer
};
DataFifo(QObject* parent = nullptr);
DataFifo(int size, QObject* parent = nullptr);
DataFifo(const DataFifo& other);
~DataFifo();
bool setSize(int size);
void reset();
inline unsigned int size() const { return m_size; }
inline unsigned int fill() { QMutexLocker mutexLocker(&m_mutex); unsigned int fill = m_fill; return fill; }
unsigned int write(const quint8* data, unsigned int count, DataType dataType);
unsigned int write(QByteArray::const_iterator begin, QByteArray::const_iterator end, DataType dataType);
unsigned int read(QByteArray::iterator begin, QByteArray::iterator end, DataType& dataType);
unsigned int readBegin(unsigned int count,
QByteArray::iterator* part1Begin, QByteArray::iterator* part1End,
QByteArray::iterator* part2Begin, QByteArray::iterator* part2End,
DataType& daaType);
unsigned int readCommit(unsigned int count);
signals:
void dataReady();
private:
QElapsedTimer m_msgRateTimer;
int m_suppressed;
QByteArray m_data;
DataType m_currentDataType;
QRecursiveMutex m_mutex;
unsigned int m_size;
unsigned int m_fill;
unsigned int m_head;
unsigned int m_tail;
void create(unsigned int s);
};
#endif // INCLUDE_DATAFIFO_H