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/* -*- c++ -*- */
/*
* Copyright 2004,2006,2010,2012 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 "pwr_squelch_cc_impl.h"
namespace gr {
namespace analog {
pwr_squelch_cc::sptr
pwr_squelch_cc::make(double threshold, double alpha, int ramp, bool gate)
{
return gnuradio::make_block_sptr<pwr_squelch_cc_impl>(threshold, alpha, ramp, gate);
}
pwr_squelch_cc_impl::pwr_squelch_cc_impl(double threshold,
double alpha,
int ramp,
bool gate)
: block("pwr_squelch_cc",
io_signature::make(1, 1, sizeof(gr_complex)),
io_signature::make(1, 1, sizeof(gr_complex))),
squelch_base_cc_impl("pwr_squelch_cc", ramp, gate),
d_pwr(0),
d_iir(alpha)
{
set_threshold(threshold);
}
pwr_squelch_cc_impl::~pwr_squelch_cc_impl() {}
std::vector<float> pwr_squelch_cc_impl::squelch_range() const
{
std::vector<float> r(3);
r[0] = -50.0; // min FIXME
r[1] = +50.0; // max FIXME
r[2] = (r[1] - r[0]) / 100; // step size
return r;
}
void pwr_squelch_cc_impl::update_state(const gr_complex& in)
{
d_pwr = d_iir.filter(in.real() * in.real() + in.imag() * in.imag());
}
void pwr_squelch_cc_impl::set_threshold(double db)
{
gr::thread::scoped_lock l(d_setlock);
d_threshold = std::pow(10.0, db / 10);
}
void pwr_squelch_cc_impl::set_alpha(double alpha)
{
gr::thread::scoped_lock l(d_setlock);
d_iir.set_taps(alpha);
}
} /* namespace analog */
} /* namespace gr */
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