airspythread.h

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// Copyright (C) 2015 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                  //
// (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_AIRSPYTHREAD_H
#define INCLUDE_AIRSPYTHREAD_H

#include <QThread>
#include <QMutex>
#include <QWaitCondition>
#include <libairspy/airspy.h>

#include "dsp/samplesinkfifo.h"
#include "dsp/decimators.h"

#define AIRSPY_BLOCKSIZE (1<<17)

class AirspyThread : public QThread {
    Q_OBJECT

public:
    AirspyThread(struct airspy_device* dev, SampleSinkFifo* sampleFifo, QObject* parent = NULL);
    ~AirspyThread();

    void startWork();
    void stopWork();
    void setSamplerate(uint32_t samplerate);
    void setLog2Decimation(unsigned int log2_decim);
    void setFcPos(int fcPos);

private:
    QMutex m_startWaitMutex;
    QWaitCondition m_startWaiter;
    bool m_running;

    struct airspy_device* m_dev;
    qint16 m_buf[2*AIRSPY_BLOCKSIZE];
    SampleVector m_convertBuffer;
    SampleSinkFifo* m_sampleFifo;

    int m_samplerate;
    unsigned int m_log2Decim;
    int m_fcPos;
    static AirspyThread *m_this;

    Decimators<qint32, qint16, SDR_RX_SAMP_SZ, 12> m_decimators;

    void run();
    void callback(const qint16* buf, qint32 len);
    static int rx_callback(airspy_transfer_t* transfer);
};

#endif // INCLUDE_AIRSPYTHREAD_H