mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-12-23 10:05:46 -05:00
60 lines
2.7 KiB
C++
60 lines
2.7 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
|
|
// 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);
|
|
~SampleSourceFifo();
|
|
|
|
void resize(uint32_t size);
|
|
uint32_t size() const { return m_size; }
|
|
void init();
|
|
/** advance read pointer for the given length and activate R/W signals */
|
|
void readAdvance(SampleVector::iterator& readUntil, unsigned int nbSamples);
|
|
|
|
void getReadIterator(SampleVector::iterator& readUntil); //!< get iterator past the last sample of a read advance operation (i.e. current read iterator)
|
|
void getWriteIterator(SampleVector::iterator& writeAt); //!< get iterator to current item for update - write phase 1
|
|
void bumpIndex(SampleVector::iterator& writeAt); //!< 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;
|
|
SampleVector m_data;
|
|
uint32_t m_iw;
|
|
uint32_t m_ir;
|
|
bool m_init;
|
|
QMutex m_mutex;
|
|
|
|
signals:
|
|
void dataWrite(int nbSamples); // signal data is read past a threshold and writing new samples to fill in is needed
|
|
void dataRead(int nbSamples); // signal a read has been done for a number of samples
|
|
};
|
|
|
|
#endif /* SDRBASE_DSP_SAMPLESOURCEFIFO_H_ */
|