GNU Radio 3.6.5.1 C++ API
gr_fft_vcc_fftw.h
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1 /* -*- c++ -*- */
2 /*
3  * Copyright 2004,2007,2008 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
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10  * any later version.
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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
18  * along with GNU Radio; see the file COPYING. If not, write to
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21  */
22 
23 #ifndef INCLUDED_GR_FFT_VCC_FFTW_H
24 #define INCLUDED_GR_FFT_VCC_FFTW_H
25 
26 #include <gr_core_api.h>
27 #include <gr_fft_vcc.h>
28 
29 class gri_fft_complex;
30 
32 gr_make_fft_vcc_fftw (int fft_size, bool forward,
33  const std::vector<float> &window,
34  bool shift=false, int nthreads=1);
35 
36 /*!
37  * \brief Compute forward or reverse FFT. complex vector in / complex vector out.
38  *
39  * Concrete class that uses FFTW.
40  */
42 {
44  gr_make_fft_vcc_fftw (int fft_size, bool forward,
45  const std::vector<float> &window,
46  bool shift, int nthreads);
47 
48  gri_fft_complex *d_fft;
49 
50  gr_fft_vcc_fftw (int fft_size, bool forward,
51  const std::vector<float> &window,
52  bool shift, int nthreads=1);
53 
54  public:
55  ~gr_fft_vcc_fftw ();
56 
57  void set_nthreads(int n);
58  int nthreads() const;
59 
60  int work (int noutput_items,
61  gr_vector_const_void_star &input_items,
62  gr_vector_void_star &output_items);
63 };
64 
65 
66 #endif /* INCLUDED_GR_FFT_VCC_FFTW_H */