airspyhf_source_c.h

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/* -*- c++ -*- */
/*
 * Copyright 2013 Dimitri Stolnikov <horiz0n@gmx.net>
 *
 * This file is part of GNU Radio
 *
 * GNU Radio 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; either version 3, or (at your option)
 * any later version.
 *
 * GNU Radio 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 for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GNU Radio; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street,
 * Boston, MA 02110-1301, USA.
 */
#ifndef INCLUDED_AIRSPYHF_SOURCE_C_H
#define INCLUDED_AIRSPYHF_SOURCE_C_H

#include <mutex>
#include <condition_variable>

#include <gnuradio/sync_block.h>

#include <gnuradio/logger.h>

#include <libairspyhf/airspyhf.h>

#include "source_iface.h"

class airspyhf_source_c;

typedef std::shared_ptr<airspyhf_source_c> airspyhf_source_c_sptr;

/*!
 * \brief Return a shared_ptr to a new instance of airspyhf_source_c.
 *
 * To avoid accidental use of raw pointers, airspyhf_source_c's
 * constructor is private.  make_airspyhf_source_c is the public
 * interface for creating new instances.
 */
airspyhf_source_c_sptr make_airspyhf_source_c (const std::string & args = "");

/*!
 * \brief Provides a stream of complex samples.
 * \ingroup block
 */
class airspyhf_source_c :
    public gr::sync_block,
    public source_iface
{
private:
    // The friend declaration allows make_airspyhf_source_c to
    // access the private constructor.

    friend airspyhf_source_c_sptr make_airspyhf_source_c (const std::string & args);

    airspyhf_source_c (const std::string & args);

public:
    ~airspyhf_source_c ();

    bool start();
    bool stop();

    int work( int noutput_items,
              gr_vector_const_void_star &input_items,
              gr_vector_void_star &output_items );

    static std::vector< std::string > get_devices();

    size_t get_num_channels( void );

    osmosdr::meta_range_t get_sample_rates( void );
    double set_sample_rate( double rate );
    double get_sample_rate( void );

    osmosdr::freq_range_t get_freq_range( size_t chan = 0 );
    double set_center_freq( double freq, size_t chan = 0 );
    double get_center_freq( size_t chan = 0 );
    double set_freq_corr( double ppm, size_t chan = 0 );
    double get_freq_corr( size_t chan = 0 );

    std::vector<std::string> get_gain_names( size_t chan = 0 );
    osmosdr::gain_range_t get_gain_range( size_t chan = 0 );
    osmosdr::gain_range_t get_gain_range( const std::string & name, size_t chan = 0 );

    bool set_gain_mode( bool automatic, size_t chan = 0 );
    bool get_gain_mode( size_t chan = 0 );

    double set_gain( double gain, size_t chan = 0 );
    double set_gain( double gain, const std::string & name, size_t chan = 0 );
    double get_gain( size_t chan = 0 );
    double get_gain( const std::string & name, size_t chan = 0 );

    void set_iq_balance_mode( int mode, size_t chan = 0 );
    void set_iq_balance( const std::complex<double> &balance, size_t chan = 0 );

    std::vector< std::string > get_antennas( size_t chan = 0 );
    std::string set_antenna( const std::string & antenna, size_t chan = 0 );
    std::string get_antenna( size_t chan = 0 );


private:
    static int _airspyhf_rx_callback(airspyhf_transfer_t* transfer);
    int airspyhf_rx_callback(airspyhf_transfer_t *transfer);

    gr::logger_ptr logger(void) const;

    airspyhf_device *_dev;

    std::vector< std::pair<double, uint32_t> > _sample_rates;

    bool _agc_enabled;
    double _lna_gain;
    double _attenuation;
    double _sample_rate;
    double _center_freq;
    double _freq_corr;

    gr_complex* _output_items;
    std::mutex _buffer_lock;
    std::condition_variable _buffer_ready;;
    std::condition_variable _callback_done;


};

#endif /* INCLUDED_AIRSPY_SOURCE_C_H */