GNU Radio 3.6.4.1 C++ API
stretch_ff.h
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1 /* -*- c++ -*- */
2 /*
3  * Copyright 2008,2013 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,
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14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15  * GNU General Public License for more details.
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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,
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22 
23 #ifndef INCLUDED_GR_STRETCH_FF_H
24 #define INCLUDED_GR_STRETCH_FF_H
25 
26 #include <blocks/api.h>
27 #include <gr_sync_block.h>
28 
29 namespace gr {
30  namespace blocks {
31 
32  /*!
33  * \brief adjust y-range of an input vector by mapping to range
34  * (max-of-input, stipulated-min). Primarily for spectral
35  * signature matching by normalizing spectrum dynamic ranges.
36  * \ingroup misc_blk
37  */
38  class BLOCKS_API stretch_ff : virtual public gr_sync_block
39  {
40  public:
41  // gr::blocks::stretch_ff::sptr
43 
44  /*!
45  * \brief Make a stretch block.
46  * \param lo Set low value for range.
47  * \param vlen vector length of input stream.
48  */
49  static sptr make(float lo, size_t vlen=1);
50 
51  virtual float lo() const = 0;
52  virtual void set_lo(float lo) = 0;
53  virtual size_t vlen() const = 0;
54  };
55 
56  } /* namespace blocks */
57 } /* namespace gr */
58 
59 #endif /* INCLUDED_GR_STRETCH_FF_H */