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gr_fft_vfc.h
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1 /* -*- c++ -*- */
2 /*
3  * Copyright 2004,2010,2012 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,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
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,
20  * Boston, MA 02110-1301, USA.
21  */
22 
23 #ifndef INCLUDED_GR_FFT_VFC_H
24 #define INCLUDED_GR_FFT_VFC_H
25 
26 #include <gr_core_api.h>
27 #include <gr_sync_block.h>
28 
29 class gri_fft_complex;
30 
31 class gr_fft_vfc;
33 
35 gr_make_fft_vfc (int fft_size, bool forward,
36  const std::vector<float> &window,
37  int nthreads=1);
38 
39 /*!
40  * \brief Compute forward FFT. float vector in / complex vector out.
41  * \ingroup dft_blk
42  */
43 
45 {
47  gr_make_fft_vfc (int fft_size, bool forward,
48  const std::vector<float> &window,
49  int nthreads);
50 
51  unsigned int d_fft_size;
52  std::vector<float> d_window;
53  gri_fft_complex *d_fft;
54 
55  gr_fft_vfc (int fft_size, bool forward,
56  const std::vector<float> &window,
57  int nthreads=1);
58 
59  public:
60  ~gr_fft_vfc ();
61 
62  void set_nthreads(int n);
63  int nthreads() const;
64 
65  int work (int noutput_items,
66  gr_vector_const_void_star &input_items,
67  gr_vector_void_star &output_items);
68  bool set_window(const std::vector<float> &window);
69 };
70 
71 
72 #endif /* INCLUDED_GR_FFT_VFC_H */