GNU Radio 3.6.5.1 C++ API
gr_fft_filter_ccc.h
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1 /* -*- c++ -*- */
2 /*
3  * Copyright 2005 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 #ifndef INCLUDED_GR_FFT_FILTER_CCC_H
23 #define INCLUDED_GR_FFT_FILTER_CCC_H
24 
25 #include <gr_core_api.h>
26 #include <gr_sync_decimator.h>
27 
28 class gr_fft_filter_ccc;
31 gr_make_fft_filter_ccc (int decimation, const std::vector<gr_complex> &taps,
32  int nthreads=1);
33 
34 //class gri_fft_filter_ccc_sse;
36 
37 /*!
38  * \brief Fast FFT filter with gr_complex input, gr_complex output and gr_complex taps
39  */
41 {
42  private:
44  gr_make_fft_filter_ccc (int decimation, const std::vector<gr_complex> &taps,
45  int nthreads);
46 
47  int d_nsamples;
48  bool d_updated;
49 #if 1 // don't enable the sse version until handling it is worked out
51 #else
52  gri_fft_filter_ccc_sse *d_filter;
53 #endif
54  std::vector<gr_complex> d_new_taps;
55 
56  /*!
57  * Construct a FFT filter with the given taps
58  *
59  * \param decimation >= 1
60  * \param taps complex filter taps
61  * \param nthreads number of threads for the FFT to use
62  */
63  gr_fft_filter_ccc (int decimation, const std::vector<gr_complex> &taps,
64  int nthreads=1);
65 
66  public:
68 
69  void set_taps (const std::vector<gr_complex> &taps);
70  std::vector<gr_complex> taps () const;
71 
72  /*!
73  * \brief Set number of threads to use.
74  */
75  void set_nthreads(int n);
76 
77  /*!
78  * \brief Get number of threads being used.
79  */
80  int nthreads() const;
81 
82  int work (int noutput_items,
83  gr_vector_const_void_star &input_items,
84  gr_vector_void_star &output_items);
85 };
86 
87 
88 
89 #endif /* INCLUDED_GR_FFT_FILTER_CCC_H */