GNU Radio 3.6.3 C++ API
pager_slicer_fb.h
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1 /*
2  * Copyright 2006,2007 Free Software Foundation, Inc.
3  *
4  * This file is part of GNU Radio
5  *
6  * GNU Radio is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 3, or (at your option)
9  * any later version.
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13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
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20  */
21 
22 #ifndef INCLUDED_PAGER_SLICER_FB_H
23 #define INCLUDED_PAGER_SLICER_FB_H
24 
25 #include <pager_api.h>
26 #include <gr_sync_block.h>
27 
28 class pager_slicer_fb;
30 
32 
33 /*!
34  * \brief slicer description
35  * \ingroup pager_blk
36  */
38 {
39 private:
41  pager_slicer_fb(float alpha);
42 
43  unsigned char slice(float sample);
44 
45  float d_alpha; // DC removal time constant
46  float d_beta; // 1.0-d_alpha
47  float d_avg; // Average value for DC offset subtraction
48 
49 public:
50  int work (int noutput_items,
51  gr_vector_const_void_star &input_items,
52  gr_vector_void_star &output_items);
53 
54  float dc_offset() const { return d_avg; }
55 };
56 
57 #endif /* INCLUDED_PAGER_SLICER_FB_H */