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/* -*- c++ -*- */
/*
* Copyright 2004,2010,2011 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_TRELLIS_CONSTELLATION_METRICS_CF_H
#define INCLUDED_TRELLIS_CONSTELLATION_METRICS_CF_H
#include <gr_block.h>
#include <digital_constellation.h>
#include <digital_metric_type.h>
class trellis_constellation_metrics_cf;
typedef boost::shared_ptr<trellis_constellation_metrics_cf> trellis_constellation_metrics_cf_sptr;
trellis_constellation_metrics_cf_sptr trellis_make_constellation_metrics_cf (digital_constellation_sptr constellation, trellis_metric_type_t TYPE);
/*!
* \brief Evaluate metrics for use by the Viterbi algorithm.
* \ingroup coding_blk
*/
class trellis_constellation_metrics_cf : public gr_block
{
public:
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);
protected:
trellis_constellation_metrics_cf (digital_constellation_sptr constellation, trellis_metric_type_t TYPE);
private:
digital_constellation_sptr d_constellation;
trellis_metric_type_t d_TYPE;
unsigned int d_O;
unsigned int d_D;
friend trellis_constellation_metrics_cf_sptr trellis_make_constellation_metrics_cf (digital_constellation_sptr constellation, trellis_metric_type_t TYPE);
};
#endif
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