/* -*- 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_BIN_STATISTICS_F_H

#define INCLUDED_GR_BIN_STATISTICS_F_H

#include <gr_sync_block.h>

#include <gr_feval.h>

#include <gr_message.h>

#include <gr_msg_queue.h>

class gr_bin_statistics_f;

typedef boost::shared_ptr<gr_bin_statistics_f> gr_bin_statistics_f_sptr;

gr_bin_statistics_f_sptr

gr_make_bin_statistics_f(unsigned int vlen,        // vector length

                         gr_msg_queue_sptr msgq,

                         gr_feval_dd *tune,        // callback

                         size_t tune_delay,        // samples

                         size_t dwell_delay);        // samples

/*!

 * \brief control scanning and record frequency domain statistics

 * \ingroup sink_blk

 */

class gr_bin_statistics_f : public gr_sync_block

{

  friend gr_bin_statistics_f_sptr

  gr_make_bin_statistics_f(unsigned int vlen,           // vector length

                           gr_msg_queue_sptr msgq,

                           gr_feval_dd *tune,      // callback

                           size_t tune_delay,           // samples

                           size_t dwell_delay);           // samples

  enum state_t { ST_INIT, ST_TUNE_DELAY, ST_DWELL_DELAY };

  size_t             d_vlen;

  gr_msg_queue_sptr  d_msgq;

  gr_feval_dd       *d_tune;

  size_t             d_tune_delay;

  size_t             d_dwell_delay;

  double             d_center_freq;

  state_t             d_state;

  size_t             d_delay;        // nsamples remaining to state transition

  gr_bin_statistics_f(unsigned int vlen,

                      gr_msg_queue_sptr msgq,

                      gr_feval_dd *tune,

                      size_t tune_delay,

                      size_t dwell_delay);

  void enter_init();

  void enter_tune_delay();

  void enter_dwell_delay();

  void leave_dwell_delay();

protected:

  std::vector<float> d_max;        // per bin maxima

  size_t vlen() const { return d_vlen; }

  double center_freq() const { return d_center_freq; }

  gr_msg_queue_sptr msgq() const { return d_msgq; }

  virtual void reset_stats();

  virtual void accrue_stats(const float *input);

  virtual void send_stats();

public:

  ~gr_bin_statistics_f();

  int work(int noutput_items,

           gr_vector_const_void_star &input_items,

           gr_vector_void_star &output_items);

};

#endif