rtlsdrthread.h

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// 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_RTLSDRTHREAD_H
#define INCLUDE_RTLSDRTHREAD_H

#include <QThread>
#include <QMutex>
#include <QWaitCondition>
#include <rtl-sdr.h>

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

class RTLSDRThread : public QThread {
    Q_OBJECT

public:
    RTLSDRThread(rtlsdr_dev_t* dev, SampleSinkFifo* sampleFifo, QObject* parent = NULL);
    ~RTLSDRThread();

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

private:
    QMutex m_startWaitMutex;
    QWaitCondition m_startWaiter;
    bool m_running;

    rtlsdr_dev_t* m_dev;
    SampleVector m_convertBuffer;
    SampleSinkFifo* m_sampleFifo;

    int m_samplerate;
    unsigned int m_log2Decim;
    int m_fcPos;

    DecimatorsU<qint32, quint8, SDR_RX_SAMP_SZ, 8, 127> m_decimators;

    void run();
    void callback(const quint8* buf, qint32 len);

    static void callbackHelper(unsigned char* buf, uint32_t len, void* ctx);
};

#endif // INCLUDE_RTLSDRTHREAD_H