bch_decoder_bb_impl.h

Go to the documentation of this file.

/* -*- c++ -*- */
/* 
 * Copyright 2018 Ahmet Inan, 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_BCH_DECODER_BB_IMPL_H
#define INCLUDED_DVBS2RX_BCH_DECODER_BB_IMPL_H

#include <dvbs2rx/bch_decoder_bb.h>
#include "bitman.hh"
#include "galois_field.hh"
#include "bose_chaudhuri_hocquenghem_decoder.hh"

namespace gr {
  namespace dvbs2rx {

    class bch_decoder_bb_impl : public bch_decoder_bb
    {
     private:
      unsigned int kbch;
      unsigned int nbch;
      unsigned int bch_code;
      unsigned int output_mode;
      unsigned int frame;
      typedef CODE::GaloisField<16, 0b10000000000101101, uint16_t> GF_NORMAL;
      typedef CODE::GaloisField<15, 0b1000000000101101, uint16_t> GF_MEDIUM;
      typedef CODE::GaloisField<14, 0b100000000101011, uint16_t> GF_SHORT;
      typedef CODE::BoseChaudhuriHocquenghemDecoder<24, 1, 65343, GF_NORMAL> BCH_NORMAL_12;
      typedef CODE::BoseChaudhuriHocquenghemDecoder<20, 1, 65375, GF_NORMAL> BCH_NORMAL_10;
      typedef CODE::BoseChaudhuriHocquenghemDecoder<16, 1, 65407, GF_NORMAL> BCH_NORMAL_8;
      typedef CODE::BoseChaudhuriHocquenghemDecoder<24, 1, 32587, GF_MEDIUM> BCH_MEDIUM_12;
      typedef CODE::BoseChaudhuriHocquenghemDecoder<24, 1, 16215, GF_SHORT> BCH_SHORT_12;
      GF_NORMAL *instance_n;
      GF_MEDIUM *instance_m;
      GF_SHORT *instance_s;
      BCH_NORMAL_12 *decode_n_12;
      BCH_NORMAL_10 *decode_n_10;
      BCH_NORMAL_8 *decode_n_8;
      BCH_MEDIUM_12 *decode_m_12;
      BCH_SHORT_12 *decode_s_12;
      uint8_t *code;
      uint8_t *parity;

     public:
      bch_decoder_bb_impl(dvb_standard_t standard, dvb_framesize_t framesize, dvb_code_rate_t rate, dvb_outputmode_t outputmode);
      ~bch_decoder_bb_impl();

      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_BCH_DECODER_BB_IMPL_H */