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/* -*- c++ -*- */
/*
* Copyright 2008,2012 Free Software Foundation, Inc.
*
* 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_GR_PROBE_DENSITY_B_H
#define INCLUDED_GR_PROBE_DENSITY_B_H
#include <digital_api.h>
#include <gr_sync_block.h>
class digital_probe_density_b;
typedef boost::shared_ptr<digital_probe_density_b> digital_probe_density_b_sptr;
DIGITAL_API digital_probe_density_b_sptr
digital_make_probe_density_b(double alpha);
/*!
* This block maintains a running average of the input stream and
* makes it available as an accessor function. The input stream
* is type unsigned char.
*
* If you send this block a stream of unpacked bytes, it will tell
* you what the bit density is.
*
* \param alpha Average filter constant
*
*/
class DIGITAL_API digital_probe_density_b : public gr_sync_block
{
private:
friend DIGITAL_API digital_probe_density_b_sptr
digital_make_probe_density_b(double alpha);
double d_alpha;
double d_beta;
double d_density;
digital_probe_density_b(double alpha);
public:
~digital_probe_density_b();
/*!
* \brief Returns the current density value
*/
double density() const { return d_density; }
/*!
* \brief Set the average filter constant
*/
void set_alpha(double alpha);
int work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items);
};
#endif /* INCLUDED_GR_PROBE_DENSITY_B_H */
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