sdrangel/sdrbase/audio/audiofifo.h

74 wiersze
2.6 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
// written by Christian Daniel //
// //
// 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_AUDIOFIFO_H
#define INCLUDE_AUDIOFIFO_H
#include <QObject>
#include <QMutex>
#include <QWaitCondition>
#include "dsp/dsptypes.h"
#include "export.h"
class SDRBASE_API AudioFifo : public QObject {
Q_OBJECT
public:
AudioFifo();
AudioFifo(uint32_t numSamples);
~AudioFifo();
bool setSize(uint32_t numSamples);
bool setSampleSize(uint32_t sampleSize, uint32_t numSamples);
uint32_t write(const quint8* data, uint32_t numSamples);
uint32_t read(quint8* data, uint32_t numSamples);
bool readOne(quint8* data);
uint32_t drain(uint32_t numSamples);
void clear();
inline uint32_t flush() { return drain(m_fill); }
inline uint32_t fill() const { return m_fill; }
inline bool isEmpty() const { return m_fill == 0; }
inline bool isFull() const { return m_fill == m_size; }
inline uint32_t size() const { return m_size; }
void setLabel(const QString& label) { m_label = label; }
private:
QMutex m_mutex;
qint8* m_fifo;
uint32_t m_sampleSize;
uint32_t m_size;
uint32_t m_fill;
uint32_t m_head;
uint32_t m_tail;
QString m_label;
bool create(uint32_t numSamples);
signals:
void dataReady();
void overflow(int nsamples);
};
#endif // INCLUDE_AUDIOFIFO_H