GNU Radio 2.x: gr_threshold_ff.h Source File

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# gr_threshold_ff.h

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    00001 /* -*- c++ -*- */
    00002 /*
    00003  * Copyright 2004 Free Software Foundation, Inc.
    00004  *
    00005  * This file is part of GNU Radio
    00006  *
    00007  * GNU Radio is free software; you can redistribute it and/or modify
    00008  * it under the terms of the GNU General Public License as published by
    00009  * the Free Software Foundation; either version 2, or (at your option)
    00010  * any later version.
    00011  *
    00012  * GNU Radio is distributed in the hope that it will be useful,
    00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    00015  * GNU General Public License for more details.
    00016  *
    00017  * You should have received a copy of the GNU General Public License
    00018  * along with GNU Radio; see the file COPYING.  If not, write to
    00019  * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    00020  * Boston, MA 02111-1307, USA.
    00021  */
    00022
    00023 #ifndef INCLUDED_GR_THRESHOLD_FF_H
    00024 #define INCLUDED_GR_THRESHOLD_FF_H
    00025
    00026 #include <gr_sync_block.h>
    00027
    00028 class gr_threshold_ff;
    00029 typedef boost::shared_ptr<gr_threshold_ff> gr_threshold_ff_sptr;
    00030
    00031 gr_threshold_ff_sptr gr_make_threshold_ff (float lo, float hi, float initial_state=0);
    00032
    00037 class gr_threshold_ff : public gr_sync_block
    00038 {
    00039   friend gr_threshold_ff_sptr gr_make_threshold_ff (float lo, float hi, float initial_state);
    00040
    00041   float d_lo,d_hi;              // the constant
    00042   float d_last_state;
    00043   gr_threshold_ff (float lo, float hi, float initial_state);
    00044
    00045  public:
    00046   float lo () const { return d_lo; }
    00047   void set_lo (float lo) { d_lo = lo; }
    00048   float hi () const { return d_hi; }
    00049   void set_hi (float hi) { d_hi = hi; }
    00050   float last_state () const { return d_last_state; }
    00051   void set_last_state (float last_state) { d_last_state = last_state; }
    00052
    00053   int work (int noutput_items,
    00054             gr_vector_const_void_star &input_items,
    00055             gr_vector_void_star &output_items);
    00056 };
    00057
    00058 #endif