baz_agc_cc.h

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/* -*- c++ -*- */
/*
 * Copyright 2006,2013 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.
 */

/*
 * gr-baz by Balint Seeber (http://spench.net/contact)
 * Information, documentation & samples: http://wiki.spench.net/wiki/gr-baz
 */

// THIS IS EXPERIMENTAL AND UNFINISHED

#ifndef INCLUDED_BAZ_AGC_CC_H
#define INCLUDED_BAZ_AGC_CC_H

#include <gr_sync_block.h>

//#include <gri_agc_cc.h>

class BAZ_API baz_agc_cc;
typedef boost::shared_ptr<baz_agc_cc> baz_agc_cc_sptr;

BAZ_API baz_agc_cc_sptr
baz_make_agc_cc (float rate = 1e-4, float reference = 1.0, float gain = 1.0, float max_gain = 0.0);
/*!
 * \brief high performance Automatic Gain Control class
 * \ingroup level_blk
 *
 * For Power the absolute value of the complex number is used.
 */

class BAZ_API baz_agc_cc : public gr_sync_block//, public gri_agc_cc
{
  friend BAZ_API baz_agc_cc_sptr baz_make_agc_cc (float rate, float reference, float gain, float max_gain);
  baz_agc_cc (float rate, float reference, float gain, float max_gain);
  
 protected:
  float _rate;                  // adjustment rate
  /*float*/double _reference; // reference value
  /*float*/double _gain;  // current gain
  float _max_gain;              // max allowable gain
  unsigned long long _count;
  double _env;
  
 public:
  virtual int work (int noutput_items,
                    gr_vector_const_void_star &input_items,
                    gr_vector_void_star &output_items);
};

#endif /* INCLUDED_BAZ_AGC_CC_H */