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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 "metrics_impl.h"
#include <gnuradio/io_signature.h>
#include <assert.h>
#include <iostream>
#include <stdexcept>
namespace gr {
namespace trellis {
template <class T>
typename metrics<T>::sptr metrics<T>::make(int O,
int D,
const std::vector<T>& TABLE,
digital::trellis_metric_type_t TYPE)
{
return gnuradio::get_initial_sptr(new metrics_impl<T>(O, D, TABLE, TYPE));
}
template <class T>
metrics_impl<T>::metrics_impl(int O,
int D,
const std::vector<T>& TABLE,
digital::trellis_metric_type_t TYPE)
: block("metrics",
io_signature::make(1, -1, sizeof(T)),
io_signature::make(1, -1, sizeof(float))),
d_O(O),
d_D(D),
d_TYPE(TYPE),
d_TABLE(TABLE)
{
this->set_relative_rate((uint64_t)d_O, (uint64_t)d_D);
this->set_output_multiple((int)d_O);
}
template <class T>
void metrics_impl<T>::set_O(int O)
{
gr::thread::scoped_lock guard(this->d_setlock);
d_O = O;
this->set_relative_rate((uint64_t)d_O, (uint64_t)d_D);
this->set_output_multiple((int)d_O);
}
template <class T>
void metrics_impl<T>::set_D(int D)
{
gr::thread::scoped_lock guard(this->d_setlock);
d_D = D;
this->set_relative_rate((uint64_t)d_O, (uint64_t)d_D);
}
template <class T>
void metrics_impl<T>::set_TYPE(digital::trellis_metric_type_t type)
{
gr::thread::scoped_lock guard(this->d_setlock);
d_TYPE = type;
}
template <class T>
void metrics_impl<T>::set_TABLE(const std::vector<T>& table)
{
gr::thread::scoped_lock guard(this->d_setlock);
d_TABLE = table;
}
template <class T>
metrics_impl<T>::~metrics_impl()
{
}
template <class T>
void metrics_impl<T>::forecast(int noutput_items, gr_vector_int& ninput_items_required)
{
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;
}
template <class T>
int metrics_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)
{
gr::thread::scoped_lock guard(this->d_setlock);
int nstreams = input_items.size();
for (int m = 0; m < nstreams; m++) {
const T* in = (T*)input_items[m];
float* out = (float*)output_items[m];
for (int i = 0; i < noutput_items / d_O; i++) {
calc_metric(d_O, d_D, d_TABLE, &(in[i * d_D]), &(out[i * d_O]), d_TYPE);
}
}
this->consume_each(d_D * noutput_items / d_O);
return noutput_items;
}
template class metrics<std::int16_t>;
template class metrics<std::int32_t>;
template class metrics<float>;
template class metrics<gr_complex>;
} /* namespace trellis */
} /* namespace gr */
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