/* -*- 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_UPSAT_FSK_FRAME_ENCODER_IMPL_H
#define INCLUDED_SATNOGS_UPSAT_FSK_FRAME_ENCODER_IMPL_H

#include <satnogs/upsat_fsk_frame_encoder.h>
#include <satnogs/whitening.h>
#include <satnogs/ax25.h>

namespace gr {
namespace satnogs {

class upsat_fsk_frame_encoder_impl : public upsat_fsk_frame_encoder {
private:
  const std::vector<uint8_t> d_preamble;
  const size_t d_preamble_len;
  const std::vector<uint8_t> d_sync_word;
  const size_t d_sync_word_len;
  const bool d_append_crc;
  const bool d_whitening;
  const bool d_manchester;
  const bool d_msb_first;
  const bool d_is_ax25;
  const size_t d_max_pdu_len;
  const size_t d_settling_samples;
  size_t d_encoded;
  size_t d_pdu_len;
  whitening d_scrambler;
  uint8_t *d_pdu;
  uint8_t *d_ax25_pdu;
  uint8_t *d_ax25_tmp_buf;
  uint8_t *d_ax25_addr;
  size_t d_ax25_addr_len;
  float *d_pdu_encoded;

  inline void
  map_msb_first(float *out, size_t nsamples_out);
  inline void
  map_lsb_first(float *out, size_t nsamples_out);
  inline void
  add_sob(uint64_t item);
  inline void
  add_eob(uint64_t item);

  inline int
  raw_frame_handling(float *out, int noutput_items);
  inline int
  ax25_frame_handling(float *out, int noutput_items);

public:
  upsat_fsk_frame_encoder_impl(const std::vector<uint8_t> &preamble,
                               const std::vector<uint8_t> &sync_word,
                               bool append_crc, bool whitening,
                               bool manchester,
                               bool msb_first,
                               bool ax25_format,
                               const std::string &ax25_dest_addr,
                               uint8_t ax25_dest_ssid,
                               const std::string &ax25_src_addr,
                               uint8_t ax25_src_ssid,
                               size_t settling_samples);
  ~upsat_fsk_frame_encoder_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_UPSAT_FSK_FRAME_ENCODER_IMPL_H */