GNU Radio 3.6.1 C++ API
gr_stretch_ff.h
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1 /* -*- c++ -*- */
2 /*
3  * Copyright 2008 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  *
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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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22 
23 #ifndef INCLUDED_GR_STRETCH_FF_H_
24 # define INCLUDED_GR_STRETCH_FF_H_
25 
26 #include <gr_core_api.h>
27 #include <gr_sync_block.h>
28 
29 /*!
30  * \brief adjust y-range of an input vector by mapping to range
31  * (max-of-input, stipulated-min). Primarily for spectral signature
32  * matching by normalizing spectrum dynamic ranges.
33  * \ingroup misc_blk
34  */
35 
36 
37 class gr_stretch_ff;
39 
41 
43 {
44  friend GR_CORE_API gr_stretch_ff_sptr gr_make_stretch_ff(float lo, size_t vlen);
45 
46  float d_lo; // the constant
47  size_t d_vlen;
48  gr_stretch_ff(float lo, size_t vlen);
49 
50  public:
51  float lo() const { return d_lo; }
52  void set_lo(float lo) { d_lo = lo; }
53  size_t vlen() const { return d_vlen; }
54 
55  int work(int noutput_items,
56  gr_vector_const_void_star &input_items,
57  gr_vector_void_star &output_items);
58 };
59 
60 #endif