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/* -*- c++ -*- */
/*
* Copyright 2004,2010 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.
*/
// @WARNING@
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <@NAME@.h>
#include <gr_io_signature.h>
#include <assert.h>
#include <iostream>
#include "core_algorithms.h"
static const float INF = 1.0e9;
@SPTR_NAME@
trellis_make_@BASE_NAME@ (
const fsm &FSMo, int STo0, int SToK,
const fsm &FSMi, int STi0, int STiK,
const interleaver &INTERLEAVER,
int blocklength,
int repetitions,
trellis_siso_type_t SISO_TYPE
)
{
return gnuradio::get_initial_sptr (new @NAME@ (
FSMo, STo0, SToK,
FSMi, STi0, STiK,
INTERLEAVER,
blocklength,
repetitions,
SISO_TYPE
));
}
@NAME@::@NAME@ (
const fsm &FSMo, int STo0, int SToK,
const fsm &FSMi, int STi0, int STiK,
const interleaver &INTERLEAVER,
int blocklength,
int repetitions,
trellis_siso_type_t SISO_TYPE
)
: gr_block ("@BASE_NAME@",
gr_make_io_signature (1, 1, sizeof (float)),
gr_make_io_signature (1, 1, sizeof (@O_TYPE@))),
d_FSMo (FSMo), d_STo0 (STo0), d_SToK (SToK),
d_FSMi (FSMi), d_STi0 (STi0), d_STiK (STiK),
d_INTERLEAVER (INTERLEAVER),
d_blocklength (blocklength),
d_repetitions (repetitions),
d_SISO_TYPE (SISO_TYPE)
{
assert(d_FSMo.O() == d_FSMi.I());
set_relative_rate (1.0 / ((double) d_FSMi.O()));
set_output_multiple (d_blocklength);
}
void
@NAME@::forecast (int noutput_items, gr_vector_int &ninput_items_required)
{
assert (noutput_items % d_blocklength == 0);
int input_required = d_FSMi.O() * noutput_items ;
ninput_items_required[0] = input_required;
}
//===========================================================
int
@NAME@::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_blocklength == 0);
int nblocks = noutput_items / d_blocklength;
float (*p2min)(float, float) = NULL;
if(d_SISO_TYPE == TRELLIS_MIN_SUM)
p2min = &min;
else if(d_SISO_TYPE == TRELLIS_SUM_PRODUCT)
p2min = &min_star;
const float *in = (const float *) input_items[0];
@O_TYPE@ *out = (@O_TYPE@ *) output_items[0];
for (int n=0;n<nblocks;n++) {
sccc_decoder(
d_FSMo, d_STo0, d_SToK,
d_FSMi, d_STi0, d_STiK,
d_INTERLEAVER, d_blocklength, d_repetitions,
p2min,
&(in[n*d_blocklength*d_FSMi.O()]),&(out[n*d_blocklength])
);
}
consume_each (d_FSMi.O() * noutput_items );
return noutput_items;
}
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