GNU Radio Manual and C++ API Reference  3.7.9.2
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fastnoise_source_i.h
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1 /* -*- c++ -*- */
2 /*
3  * Copyright 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
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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.
16  *
17  * You should have received a copy of the GNU General Public License
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22 
23 // WARNING: this file is machine generated. Edits will be overwritten
24 
25 #ifndef INCLUDED_ANALOG_FASTNOISE_SOURCE_I_H
26 #define INCLUDED_ANALOG_FASTNOISE_SOURCE_I_H
27 
28 #include <gnuradio/analog/api.h>
30 #include <gnuradio/sync_block.h>
31 
32 namespace gr {
33  namespace analog {
34 
35  /*!
36  * \brief Random number source
37  * \ingroup source_blk
38  *
39  * \details
40  * Generate random values from different distributions.
41  * Currently, only Gaussian and uniform are enabled.
42  */
43  class ANALOG_API fastnoise_source_i : virtual public sync_block
44  {
45  public:
46  // gr::analog::fastnoise_source_i::sptr
47  typedef boost::shared_ptr<fastnoise_source_i> sptr;
48 
49  /*! \brief Make a fast noise source
50  * \param type the random distribution to use (see
51  * gnuradio/analog/noise_type.h)
52  * \param ampl the standard deviation of a 1-d noise process. If
53  * this is the complex source, this parameter is split
54  * among the real and imaginary parts:
55  * <pre>(ampl/sqrt(2))x + j(ampl/sqrt(2))y</pre>
56  * \param seed seed for random generators. Note that for uniform
57  * and Gaussian distributions, this should be a negative
58  * number.
59  * \param samples Number of samples to pre-generate
60  */
61  static sptr make(noise_type_t type, float ampl,
62  long seed = 0, long samples=1024*16);
63  virtual int sample() = 0;
64  virtual int sample_unbiased() = 0;
65 
66  /*!
67  * Set the noise type. Nominally from the
68  * gr::analog::noise_type_t selections, but only GR_GAUSSIAN and
69  * GR_UNIFORM are currently available.
70  */
71  virtual void set_type(noise_type_t type) = 0;
72 
73  /*!
74  * Set the standard deviation (amplitude) of the 1-d noise
75  * process.
76  */
77  virtual void set_amplitude(float ampl) = 0;
78 
79  virtual noise_type_t type() const = 0;
80  virtual float amplitude() const = 0;
81  };
82 
83  } /* namespace analog */
84 } /* namespace gr */
85 
86 
87 #endif /* INCLUDED_ANALOG_FASTNOISE_SOURCE_I_H */
noise_type_t
Definition: noise_type.h:29
Include this header to use the message passing features.
Definition: logger.h:131
synchronous 1:1 input to output with historyOverride work to provide the signal processing implementa...
Definition: sync_block.h:37
#define ANALOG_API
Definition: gr-analog/include/gnuradio/analog/api.h:30
boost::shared_ptr< fastnoise_source_i > sptr
Definition: fastnoise_source_i.h:47
Random number source.
Definition: fastnoise_source_i.h:43