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/* -*- c++ -*- */
/*
* Copyright 2014 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* GNU Radio 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.
*
* GNU Radio 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 GNU Radio; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifndef INCLUDED_DTV_ATSC_VITERBI_DECODER_IMPL_H
#define INCLUDED_DTV_ATSC_VITERBI_DECODER_IMPL_H
#include <gnuradio/dtv/atsc_viterbi_decoder.h>
#include <gnuradio/dtv/atsc_consts.h>
#include "atsc_syminfo_impl.h"
#include "atsc_interleaver_fifo.h"
#define USE_SIMPLE_SLICER 0
#define NCODERS 12
#if USE_SIMPLE_SLICER
#include "atsc_fake_single_viterbi.h"
#else
#include "atsc_single_viterbi.h"
#endif
namespace gr {
namespace dtv {
#if USE_SIMPLE_SLICER
typedef atsc_fake_single_viterbi single_viterbi_t;
#else
typedef atsc_single_viterbi single_viterbi_t;
#endif
class atsc_viterbi_decoder_impl : public atsc_viterbi_decoder
{
private:
int last_start;
typedef interleaver_fifo<unsigned char> fifo_t;
static const int SEGMENT_SIZE = ATSC_MPEG_RS_ENCODED_LENGTH; // 207
static const int OUTPUT_SIZE = (SEGMENT_SIZE * 12);
static const int INPUT_SIZE = (ATSC_DATA_SEGMENT_LENGTH * 12);
single_viterbi_t viterbi[NCODERS];
fifo_t *fifo[NCODERS];
public:
atsc_viterbi_decoder_impl();
~atsc_viterbi_decoder_impl();
void setup_rpc();
void reset();
std::vector<float> decoder_metrics() const;
virtual int work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items);
};
} /* namespace dtv */
} /* namespace gr */
#endif /* INCLUDED_DTV_ATSC_VITERBI_DECODER_IMPL_H */
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