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/* -*- c++ -*- */
/*
* Copyright 2004,2010,2012,2018 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "sccc_decoder_blk_impl.h"
#include <gnuradio/io_signature.h>
#include <gnuradio/trellis/core_algorithms.h>
#include <iostream>
namespace gr {
namespace trellis {
template <class T>
typename sccc_decoder_blk<T>::sptr
sccc_decoder_blk<T>::make(const fsm& FSMo,
int STo0,
int SToK,
const fsm& FSMi,
int STi0,
int STiK,
const interleaver& INTERLEAVER,
int blocklength,
int repetitions,
siso_type_t SISO_TYPE)
{
return gnuradio::make_block_sptr<sccc_decoder_blk_impl<T>>(FSMo,
STo0,
SToK,
FSMi,
STi0,
STiK,
INTERLEAVER,
blocklength,
repetitions,
SISO_TYPE);
}
template <class T>
sccc_decoder_blk_impl<T>::sccc_decoder_blk_impl(const fsm& FSMo,
int STo0,
int SToK,
const fsm& FSMi,
int STi0,
int STiK,
const interleaver& INTERLEAVER,
int blocklength,
int repetitions,
siso_type_t SISO_TYPE)
: block("sccc_decoder_blk",
io_signature::make(1, 1, sizeof(float)),
io_signature::make(1, 1, sizeof(T))),
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)
{
this->set_relative_rate(1, (uint64_t)d_FSMi.O());
this->set_output_multiple(d_blocklength);
}
template <class T>
sccc_decoder_blk_impl<T>::~sccc_decoder_blk_impl()
{
}
template <class T>
void sccc_decoder_blk_impl<T>::forecast(int noutput_items,
gr_vector_int& ninput_items_required)
{
int input_required = d_FSMi.O() * noutput_items;
ninput_items_required[0] = input_required;
}
//===========================================================
template <class T>
int sccc_decoder_blk_impl<T>::general_work(int noutput_items,
gr_vector_int& ninput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items)
{
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];
T* out = (T*)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]));
}
this->consume_each(d_FSMi.O() * noutput_items);
return noutput_items;
}
template class sccc_decoder_blk<std::uint8_t>;
template class sccc_decoder_blk<std::int16_t>;
template class sccc_decoder_blk<std::int32_t>;
} /* namespace trellis */
} /* namespace gr */
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