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/* -*- c++ -*- */
/*
* Copyright 2004 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 2, 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef HAVE_CONFIG_H
#include "config.h"
#endif
#include <trellis_metrics_i.h>
#include <gr_io_signature.h>
#include <assert.h>
#include <stdexcept>
#include <iostream>
trellis_metrics_i_sptr
trellis_make_metrics_i (const int O, const int D, const std::vector<int> &TABLE, trellis_metric_type_t TYPE)
{
return trellis_metrics_i_sptr (new trellis_metrics_i (O,D,TABLE,TYPE));
}
trellis_metrics_i::trellis_metrics_i (const int O, const int D, const std::vector<int> &TABLE, trellis_metric_type_t TYPE)
: gr_block ("metrics_i",
gr_make_io_signature (1, -1, sizeof (int)),
gr_make_io_signature (1, -1, sizeof (float))),
d_O (O),
d_D (D),
d_TYPE (TYPE),
d_TABLE (TABLE)
{
set_relative_rate (1.0 * d_O / ((double) d_D));
set_output_multiple ((int)d_O);
}
void
trellis_metrics_i::forecast (int noutput_items, gr_vector_int &ninput_items_required)
{
assert (noutput_items % d_O == 0);
int input_required = d_D * noutput_items / d_O;
unsigned ninputs = ninput_items_required.size();
for (unsigned int i = 0; i < ninputs; i++)
ninput_items_required[i] = input_required;
}
int
trellis_metrics_i::general_work (int noutput_items,
gr_vector_int &ninput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
assert (noutput_items % d_O == 0);
assert (input_items.size() == output_items.size());
int nstreams = input_items.size();
for (int m=0;m<nstreams;m++) {
const int *in = (int *) input_items[m];
float *out = (float *) output_items[m];
for (int i = 0; i < noutput_items / d_O ; i++){
#if 0
calc_metric_s(d_O, d_D, d_TABLE,&(in[i*d_D]),&(out[i*d_O]), d_TYPE);
#elif 1
calc_metric_i(d_O, d_D, d_TABLE,&(in[i*d_D]),&(out[i*d_O]), d_TYPE);
#elif 0
calc_metric_f(d_O, d_D, d_TABLE,&(in[i*d_D]),&(out[i*d_O]), d_TYPE);
#elif 0
calc_metric_c(d_O, d_D, d_TABLE,&(in[i*d_D]),&(out[i*d_O]), d_TYPE);
#endif
}
}
consume_each (d_D * noutput_items / d_O);
return noutput_items;
}
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