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/* -*- c++ -*- */
/*
* Copyright 2004,2010,2013 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 "threshold_ff_impl.h"
#include <gnuradio/io_signature.h>
namespace gr {
namespace blocks {
threshold_ff::sptr threshold_ff::make(float lo, float hi, float initial_state)
{
return gnuradio::make_block_sptr<threshold_ff_impl>(lo, hi, initial_state);
}
threshold_ff_impl::threshold_ff_impl(float lo, float hi, float initial_state)
: sync_block("threshold_ff",
io_signature::make(1, 1, sizeof(float)),
io_signature::make(1, 1, sizeof(float))),
d_lo(lo),
d_hi(hi),
d_last_state(initial_state)
{
}
threshold_ff_impl::~threshold_ff_impl() {}
int threshold_ff_impl::work(int noutput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items)
{
const float* in = (const float*)input_items[0];
float* out = (float*)output_items[0];
for (int i = 0; i < noutput_items; i++) {
if (in[i] > d_hi) {
out[i] = 1.0;
d_last_state = 1.0;
} else if (in[i] < d_lo) {
out[i] = 0.0;
d_last_state = 0.0;
} else
out[i] = d_last_state;
}
return noutput_items;
}
} /* namespace blocks */
} /* namespace gr */
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