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/* -*- c++ -*- */
/*
* Copyright 2005,2012 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.
*/
#ifndef INCLUDED_ANALOG_SIMPLE_SQUELCH_CC_IMPL_H
#define INCLUDED_ANALOG_SIMPLE_SQUELCH_CC_IMPL_H
#include <analog/simple_squelch_cc.h>
#include <filter/single_pole_iir.h>
namespace gr {
namespace analog {
class simple_squelch_cc_impl : public simple_squelch_cc
{
private:
double d_threshold;
bool d_unmuted;
filter::single_pole_iir<double,double,double> d_iir;
public:
simple_squelch_cc_impl(double threshold_db, double alpha);
~simple_squelch_cc_impl();
bool unmuted() const { return d_unmuted; }
void set_alpha(double alpha);
void set_threshold(double decibels);
double threshold() const;
std::vector<float> squelch_range() const;
int work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items);
};
} /* namespace analog */
} /* namespace gr */
#endif /* INCLUDED_ANALOG_SIMPLE_SQUELCH_CC_IMPL_H */
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