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/* -*- c++ -*- */
/*
* Copyright 2004,2006,2010 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 <gr_pwr_squelch_cc.h>
gr_pwr_squelch_cc_sptr
gr_make_pwr_squelch_cc(double threshold, double alpha, int ramp, bool gate)
{
return gnuradio::get_initial_sptr(new gr_pwr_squelch_cc(threshold, alpha, ramp, gate));
}
gr_pwr_squelch_cc::gr_pwr_squelch_cc(double threshold, double alpha, int ramp, bool gate) :
gr_squelch_base_cc("pwr_squelch_cc", ramp, gate),
d_iir(alpha)
{
set_threshold(threshold);
}
std::vector<float> gr_pwr_squelch_cc::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 gr_pwr_squelch_cc::update_state(const gr_complex &in)
{
d_pwr = d_iir.filter(in.real()*in.real()+in.imag()*in.imag());
}
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