gr_feedforward_agc_cc.h

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/* -*- c++ -*- */
/*
 * Copyright 2006 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_GR_FEEDFORWARD_AGC_CC_H
#define INCLUDED_GR_FEEDFORWARD_AGC_CC_H

#include <gr_sync_block.h>

class gr_feedforward_agc_cc;
typedef boost::shared_ptr<gr_feedforward_agc_cc> gr_feedforward_agc_cc_sptr;

gr_feedforward_agc_cc_sptr
gr_make_feedforward_agc_cc(int nsamples, float reference = 1.0);

/*!
 * \brief Non-causal AGC which computes required gain based on max absolute value over nsamples
 * \ingroup level_blk
 */
class gr_feedforward_agc_cc : public gr_sync_block
{
  friend gr_feedforward_agc_cc_sptr 
  gr_make_feedforward_agc_cc(int nsamples, float reference);
  
  int           d_nsamples;
  float         d_reference;

  gr_feedforward_agc_cc(int nsamples, float reference);

 public:
  ~gr_feedforward_agc_cc();

  int work(int noutput_items,
           gr_vector_const_void_star &input_items,
           gr_vector_void_star &output_items);
};

#endif /* INCLUDED_GR_FEEDFORWARD_AGC_CC_H */