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   1 /* -*- c++ -*- */
   2 /*
   3  * Copyright 2006 Free Software Foundation, Inc.
   4  *
   5  * This file is part of GNU Radio
   6  *
   7  * GNU Radio is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 3, or (at your option)
  10  * any later version.
  11  *
  12  * GNU Radio is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with GNU Radio; see the file COPYING.  If not, write to
  19  * the Free Software Foundation, Inc., 51 Franklin Street,
  20  * Boston, MA 02110-1301, USA.
  21  */
  22
  23 #ifndef INCLUDED_GR_BIN_STATISTICS_F_H
  24 #define INCLUDED_GR_BIN_STATISTICS_F_H
  25
  26
  27 #include <gr_sync_block.h>
  28 #include <gr_feval.h>
  29 #include <gr_message.h>
  30 #include <gr_msg_queue.h>
  31
  32 class gr_bin_statistics_f;
  33 typedef boost::shared_ptr<gr_bin_statistics_f> gr_bin_statistics_f_sptr;
  34
  35
  36 gr_bin_statistics_f_sptr
  37 gr_make_bin_statistics_f(unsigned int vlen,     // vector length
  38                          gr_msg_queue_sptr msgq,
  39                          gr_feval_dd *tune,     // callback
  40                          size_t tune_delay,     // samples
  41                          size_t dwell_delay);   // samples
  42
  43 /*!
  44  * \brief control scanning and record frequency domain statistics
  45  * \ingroup sink_blk
  46  */
  47 class gr_bin_statistics_f : public gr_sync_block
  48 {
  49   friend gr_bin_statistics_f_sptr
  50   gr_make_bin_statistics_f(unsigned int vlen,      // vector length
  51                            gr_msg_queue_sptr msgq,
  52                            gr_feval_dd *tune,      // callback
  53                            size_t tune_delay,      // samples
  54                            size_t dwell_delay);    // samples
  55
  56   enum state_t { ST_INIT, ST_TUNE_DELAY, ST_DWELL_DELAY };
  57
  58   size_t             d_vlen;
  59   gr_msg_queue_sptr  d_msgq;
  60   gr_feval_dd       *d_tune;
  61   size_t             d_tune_delay;
  62   size_t             d_dwell_delay;
  63   double             d_center_freq;
  64
  65   state_t            d_state;
  66   size_t             d_delay;   // nsamples remaining to state transition
  67
  68   gr_bin_statistics_f(unsigned int vlen,
  69                       gr_msg_queue_sptr msgq,
  70                       gr_feval_dd *tune,
  71                       size_t tune_delay,
  72                       size_t dwell_delay);
  73
  74   void enter_init();
  75   void enter_tune_delay();
  76   void enter_dwell_delay();
  77   void leave_dwell_delay();
  78
  79 protected:
  80   std::vector<float> d_max;     // per bin maxima
  81
  82   size_t vlen() const { return d_vlen; }
  83   double center_freq() const { return d_center_freq; }
  84   gr_msg_queue_sptr msgq() const { return d_msgq; }
  85
  86   virtual void reset_stats();
  87   virtual void accrue_stats(const float *input);
  88   virtual void send_stats();
  89
  90 public:
  91   ~gr_bin_statistics_f();
  92
  93   int work(int noutput_items,
  94            gr_vector_const_void_star &input_items,
  95            gr_vector_void_star &output_items);
  96
  97 };
  98
  99 #endif