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/* -*- c++ -*- */
/*
* Copyright 2004,2010,2012,2018 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "encoder_impl.h"
#include <gnuradio/io_signature.h>
#include <iostream>
namespace gr {
namespace trellis {
template <class IN_T, class OUT_T>
typename encoder<IN_T,OUT_T>::sptr
encoder<IN_T,OUT_T>::make(const fsm &FSM, int ST)
{
return gnuradio::get_initial_sptr
(new encoder_impl<IN_T,OUT_T>(FSM,ST,0,false));
}
template <class IN_T, class OUT_T>
typename encoder<IN_T,OUT_T>::sptr
encoder<IN_T,OUT_T>::make(const fsm &FSM, int ST, int K)
{
return gnuradio::get_initial_sptr
(new encoder_impl<IN_T,OUT_T>(FSM,ST,K,true));
}
template <class IN_T, class OUT_T>
encoder_impl<IN_T,OUT_T>::encoder_impl(const fsm &FSM, int ST, int K, bool B)
: sync_block("encoder<IN_T,OUT_T>",
io_signature::make(1, 1, sizeof(IN_T)),
io_signature::make(1, 1, sizeof(OUT_T))),
d_FSM(FSM),
d_ST(ST),
d_K(K),
d_B(B)
{
}
template <class IN_T, class OUT_T>
void encoder_impl<IN_T,OUT_T>::set_FSM(const fsm &FSM)
{
gr::thread::scoped_lock guard(this->d_setlock);
d_FSM = FSM;
}
template <class IN_T, class OUT_T>
void encoder_impl<IN_T,OUT_T>::set_ST(int ST)
{
gr::thread::scoped_lock guard(this->d_setlock);
d_ST = ST;
}
template <class IN_T, class OUT_T>
void encoder_impl<IN_T,OUT_T>::set_K(int K)
{
gr::thread::scoped_lock guard(this->d_setlock);
d_K = K;
}
template <class IN_T, class OUT_T>
encoder_impl<IN_T,OUT_T>::~encoder_impl()
{
}
template <class IN_T, class OUT_T>
int
encoder_impl<IN_T,OUT_T>::work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
gr::thread::scoped_lock guard(this->d_setlock);
int ST_tmp = 0;
if (d_B){ // blockwise operation
int nblocks = noutput_items /d_K;
const IN_T *in = (const IN_T*)input_items[0];
OUT_T *out = (OUT_T *) output_items[0];
for(int n = 0; n < nblocks; n++) {
ST_tmp = d_ST;
for(int i = 0; i < d_K; i++) {
out[n*d_K+i] = (OUT_T)d_FSM.OS()[ST_tmp*d_FSM.I()+in[n*d_K+i]];
ST_tmp = (int)d_FSM.NS()[ST_tmp*d_FSM.I()+in[n*d_K+i]];
}
}
return nblocks*d_K;
} // end blockwise operation
else{ // streaming operation
const IN_T *in = (const IN_T*)input_items[0];
OUT_T *out = (OUT_T *) output_items[0];
ST_tmp = d_ST;
for(int i = 0; i < noutput_items; i++) {
out[i] = (OUT_T)d_FSM.OS()[ST_tmp*d_FSM.I()+in[i]];
ST_tmp = (int)d_FSM.NS()[ST_tmp*d_FSM.I()+in[i]];
}
d_ST = ST_tmp;
return noutput_items;
} // end streaming operation
}
template class encoder<std::uint8_t, std::uint8_t>;
template class encoder<std::uint8_t, std::int16_t>;
template class encoder<std::uint8_t, std::int32_t>;
template class encoder<std::int16_t, std::int16_t>;
template class encoder<std::int16_t, std::int32_t>;
template class encoder<std::int32_t, std::int32_t>;
} /* namespace trellis */
} /* namespace gr */
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