sdrangel/sdrbase/dsp/samplesourcefifo.h

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///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2016 Edouard Griffiths, F4EXB //
// //
// 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 //
// //
// 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 SDRBASE_DSP_SAMPLESOURCEFIFO_H_
#define SDRBASE_DSP_SAMPLESOURCEFIFO_H_
#include <QObject>
#include <QMutex>
#include <stdint.h>
#include <assert.h>
#include "util/export.h"
#include "dsp/dsptypes.h"
class SDRANGEL_API SampleSourceFifo : public QObject {
Q_OBJECT
public:
SampleSourceFifo(uint32_t size, uint32_t samplesChunkSize);
~SampleSourceFifo();
unsigned int getChunkSize() const { return m_samplesChunkSize; }
/** begin read at current read point for the given length */
void read(SampleVector::iterator& beginRead, unsigned int nbSamples);
void getWriteIterator(SampleVector::iterator& writeAt); //!< get iterator to current item for update - write phase 1
void bumpIndex(); //!< copy current item to second buffer and bump write index - write phase 2
void write(const Sample& sample); //!< write directly - phase 1 + phase 2
private:
uint32_t m_size;
uint32_t m_samplesChunkSize;
SampleVector m_data;
uint32_t m_iw;
uint32_t m_ir;
QMutex m_mutex;
signals:
void dataWrite(); // signal data is read past a read chunk of samples and write is needed
};
#endif /* SDRBASE_DSP_SAMPLESOURCEFIFO_H_ */