catv_trellis_enc_bb.h

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/* -*- c++ -*- */
/* 
 * Copyright 2016,2017 Free Software Foundation, Inc.
 * 
 * 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_DTV_CATV_TRELLIS_ENC_BB_H
#define INCLUDED_DTV_CATV_TRELLIS_ENC_BB_H

#include <gnuradio/dtv/api.h>
#include <gnuradio/block.h>
#include <gnuradio/dtv/catv_config.h>

namespace gr {
  namespace dtv {

    /*!
     * \brief Trellis Encoder. 14/15 (64QAM) or 19/20 (256QAM) code rate.
     * \ingroup dtv
     *
     * Input: Scrambled FEC Frame packets of 60 * 128 (64QAM) or 88 * 128 (256QAM) 7-bit symbols with 42-bit (64QAM) or 40-bit (256QAM) FSYNC word.\n
     * Output: Four 7-bit symbols (28 bits) Trellis encoded to 30 bits (64QAM, 14/15 code rate) or 38 data bits Trellis encoded to 40 bits (256QAM, 19/20 code rate).
     */
    class DTV_API catv_trellis_enc_bb : virtual public gr::block
    {
     public:
      typedef boost::shared_ptr<catv_trellis_enc_bb> sptr;

      /*!
       * \brief Create an ITU-T J.83B Trellis Encoder.
       *
       * \param constellation 64QAM or 256QAM constellation.
       */
      static sptr make(catv_constellation_t constellation);
    };

  } // namespace dtv
} // namespace gr

#endif /* INCLUDED_DTV_CATV_TRELLIS_ENC_BB_H */