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/* -*- c++ -*- */
/*
* Copyright 2008,2010,2012 Free Software Foundation, Inc.
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "probe_density_b_impl.h"
#include <gnuradio/io_signature.h>
namespace gr {
namespace digital {
probe_density_b::sptr probe_density_b::make(double alpha)
{
return gnuradio::make_block_sptr<probe_density_b_impl>(alpha);
}
probe_density_b_impl::probe_density_b_impl(double alpha)
: sync_block("density_b",
io_signature::make(1, 1, sizeof(char)),
io_signature::make(0, 0, 0))
{
set_alpha(alpha);
d_density = 1.0;
}
probe_density_b_impl::~probe_density_b_impl() {}
void probe_density_b_impl::set_alpha(double alpha)
{
d_alpha = alpha;
d_beta = 1.0 - d_alpha;
}
int probe_density_b_impl::work(int noutput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items)
{
const char* in = (const char*)input_items[0];
for (int i = 0; i < noutput_items; i++)
d_density = d_alpha * (double)in[i] + d_beta * d_density;
return noutput_items;
}
} /* namespace digital */
} /* namespace gr */
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