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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_PROBE_AVG_MAG_SQRD_F_H
#define INCLUDED_ANALOG_PROBE_AVG_MAG_SQRD_F_H
#include <analog/api.h>
#include <gr_sync_block.h>
namespace gr {
namespace analog {
/*!
* \brief compute avg magnitude squared.
* \ingroup sink_blk
*
* input stream 0: float
*
* Compute a running average of the magnitude squared of the the
* input. The level and indication as to whether the level exceeds
* threshold can be retrieved with the level and unmuted
* accessors.
*/
class ANALOG_API probe_avg_mag_sqrd_f : virtual public gr_sync_block
{
public:
// gr::analog::probe_avg_mag_sqrd_f::sptr
typedef boost::shared_ptr<probe_avg_mag_sqrd_f> sptr;
/*!
* \brief Make a float sink that computes avg magnitude squared.
*
* \param threshold_db Threshold for muting.
* \param alpha Gain parameter for the running average filter.
*/
static sptr make(double threshold_db, double alpha = 0.0001);
virtual bool unmuted() const = 0;
virtual double level() const = 0;
virtual double threshold() const = 0;
virtual void set_alpha (double alpha) = 0;
virtual void set_threshold (double decibels) = 0;
};
} /* namespace analog */
} /* namespace gr */
#endif /* INCLUDED_ANALOG_PROBE_AVG_MAG_SQRD_F_H */
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