/* -*- c++ -*- */
/*
 * gr-satnogs: SatNOGS GNU Radio Out-Of-Tree Module
 *
 *  Copyright (C) 2016, Libre Space Foundation <http://librespacefoundation.org/>
 *
 *  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, either 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 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 INCLUDED_SATNOGS_COARSE_DOPPLER_CORRECTION_CC_IMPL_H
#define INCLUDED_SATNOGS_COARSE_DOPPLER_CORRECTION_CC_IMPL_H

#include <satnogs/coarse_doppler_correction_cc.h>
#include <gnuradio/fxpt_nco.h>

namespace gr {
namespace satnogs {

class coarse_doppler_correction_cc_impl : public coarse_doppler_correction_cc {
private:
  double d_target_freq;
  const double d_offset;
  const double d_samp_rate;
  const size_t d_buf_items;
  double d_freq_diff;

  gr::fxpt_nco d_nco;
  gr_complex *d_nco_buff;

  void
  new_freq(pmt::pmt_t msg);

public:
  coarse_doppler_correction_cc_impl(double target_freq,
                                    double offset,
                                    double sampling_rate);
  ~coarse_doppler_correction_cc_impl();

  // Where all the action really happens
  int
  work(int noutput_items, gr_vector_const_void_star &input_items,
       gr_vector_void_star &output_items);
};

} // namespace satnogs
} // namespace gr

#endif /* INCLUDED_SATNOGS_COARSE_DOPPLER_CORRECTION_CC_IMPL_H */