GNU Radio 3.6.2 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
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.
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
19  * the Free Software Foundation, Inc., 51 Franklin Street,
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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  * \ingroup dft_blk
39  *
40  * Concrete class that uses FFTW.
41  */
43 {
45  gr_make_fft_vcc_fftw (int fft_size, bool forward,
46  const std::vector<float> &window,
47  bool shift, int nthreads);
48 
49  gri_fft_complex *d_fft;
50 
51  gr_fft_vcc_fftw (int fft_size, bool forward,
52  const std::vector<float> &window,
53  bool shift, int nthreads=1);
54 
55  public:
56  ~gr_fft_vcc_fftw ();
57 
58  void set_nthreads(int n);
59  int nthreads() const;
60 
61  int work (int noutput_items,
62  gr_vector_const_void_star &input_items,
63  gr_vector_void_star &output_items);
64 };
65 
66 
67 #endif /* INCLUDED_GR_FFT_VCC_FFTW_H */