bbdeheader_bb_impl.h

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/* -*- c++ -*- */
/*
 * Copyright 2018 Ron Economos.
 *
 * This 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.
 *
 * This software 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 software; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street,
 * Boston, MA 02110-1301, USA.
 */
 
#ifndef INCLUDED_DVBS2RX_BBDEHEADER_BB_IMPL_H
#define INCLUDED_DVBS2RX_BBDEHEADER_BB_IMPL_H
 
#include "dvb_defines.h"
#include <dvbs2rx/bbdeheader_bb.h>
 
typedef struct {
  int ts_gs;
  int sis_mis;
  int ccm_acm;
  int issyi;
  int npd;
  int ro;
  int isi;
  unsigned int upl;
  unsigned int dfl;
  int sync;
  unsigned int syncd;
} BBHeader;
 
typedef struct {
  BBHeader bb_header;
} FrameFormat;
 
namespace gr {
  namespace dvbs2rx {
 
    class bbdeheader_bb_impl : public bbdeheader_bb
    {
  private:
      unsigned int kbch;
      unsigned int max_dfl;
      unsigned int dvb_standard;
      unsigned int df_remaining;
      unsigned int count;
      unsigned int synched;
      unsigned char crc;
      unsigned int distance;
      unsigned int spanning;
      unsigned int index;
      FrameFormat m_format[1];
      unsigned char crc_tab[256];
      unsigned char packet[188];
      void
      build_crc8_table(void);
      unsigned int
      check_crc8_bits(const unsigned char *, int);
 
  public:
      bbdeheader_bb_impl(dvb_standard_t standard,
                         dvb_framesize_t framesize,
                         dvb_code_rate_t rate);
      ~bbdeheader_bb_impl();
 
      // Where all the action really happens
      void
      forecast(int noutput_items, gr_vector_int &ninput_items_required);
 
      int
      general_work(int noutput_items,
                   gr_vector_int &ninput_items,
                   gr_vector_const_void_star &input_items,
                   gr_vector_void_star &output_items);
    };
 
  } // namespace dvbs2rx
} // namespace gr
 
#endif /* INCLUDED_DVBS2RX_BBDEHEADER_BB_IMPL_H */