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/* -*- c++ -*- */
/*
* Copyright 2004,2010-2012 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 "constellation_metrics_cf_impl.h"
#include <gnuradio/io_signature.h>
#include <assert.h>
#include <iostream>
#include <stdexcept>
namespace gr {
namespace trellis {
constellation_metrics_cf::sptr
constellation_metrics_cf::make(digital::constellation_sptr constellation,
digital::trellis_metric_type_t TYPE)
{
return gnuradio::get_initial_sptr(
new constellation_metrics_cf_impl(constellation, TYPE));
}
constellation_metrics_cf_impl::constellation_metrics_cf_impl(
digital::constellation_sptr constellation, digital::trellis_metric_type_t TYPE)
: block("constellation_metrics_cf",
io_signature::make(1, -1, sizeof(gr_complex)),
io_signature::make(1, -1, sizeof(float))),
d_constellation(constellation),
d_TYPE(TYPE),
d_O(constellation->arity()),
d_D(constellation->dimensionality())
{
set_relative_rate((uint64_t)d_O, (uint64_t)d_D);
set_output_multiple((int)d_O);
}
constellation_metrics_cf_impl::~constellation_metrics_cf_impl() {}
void constellation_metrics_cf_impl::forecast(int noutput_items,
gr_vector_int& ninput_items_required)
{
assert(noutput_items % d_O == 0);
unsigned int input_required = d_D * noutput_items / d_O;
unsigned int ninputs = ninput_items_required.size();
for (unsigned int i = 0; i < ninputs; i++)
ninput_items_required[i] = input_required;
}
int constellation_metrics_cf_impl::general_work(int noutput_items,
gr_vector_int& ninput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items)
{
unsigned int nstreams = input_items.size();
for (unsigned int m = 0; m < nstreams; m++) {
const gr_complex* in = (gr_complex*)input_items[m];
float* out = (float*)output_items[m];
for (unsigned int i = 0; i < noutput_items / d_O; i++) {
d_constellation->calc_metric(&(in[i * d_D]), &(out[i * d_O]), d_TYPE);
}
}
consume_each(d_D * noutput_items / d_O);
return noutput_items;
}
} /* namespace trellis */
} /* namespace gr */
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