GNU Radio Manual and C++ API Reference  3.10.9.1
The Free & Open Software Radio Ecosystem
fir_filter.h
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1 /* -*- c++ -*- */
2 /*
3  * Copyright 2004,2010,2012,2018 Free Software Foundation, Inc.
4  *
5  * This file is part of GNU Radio
6  *
7  * SPDX-License-Identifier: GPL-3.0-or-later
8  *
9  */
10 
11 #ifndef INCLUDED_FILTER_FIR_FILTER_H
12 #define INCLUDED_FILTER_FIR_FILTER_H
13 
14 #include <gnuradio/filter/api.h>
15 #include <gnuradio/gr_complex.h>
16 #include <volk/volk_alloc.hh>
17 #include <cstdint>
18 #include <vector>
19 
20 namespace gr {
21 namespace filter {
22 namespace kernel {
23 
24 template <class IN_T, class OUT_T, class TAP_T>
26 {
27 public:
28  fir_filter(const std::vector<TAP_T>& taps);
29 
30  // Disallow copy.
31  //
32  // This prevents accidentally doing needless copies, not just of fir_filter,
33  // but every block that contains one.
34  fir_filter(const fir_filter&) = delete;
35  fir_filter& operator=(const fir_filter&) = delete;
36  fir_filter(fir_filter&&) = default;
38 
39  void set_taps(const std::vector<TAP_T>& taps);
40  void update_tap(TAP_T t, unsigned int index);
41  std::vector<TAP_T> taps() const;
42  unsigned int ntaps() const;
43 
44  OUT_T filter(const IN_T input[]) const;
45  void filterN(OUT_T output[], const IN_T input[], unsigned long n);
46  void filterNdec(OUT_T output[],
47  const IN_T input[],
48  unsigned long n,
49  unsigned int decimate);
50 
51 protected:
52  std::vector<TAP_T> d_taps;
53  unsigned int d_ntaps;
54  std::vector<volk::vector<TAP_T>> d_aligned_taps;
55  volk::vector<OUT_T> d_output;
56  int d_align;
58 };
65 } /* namespace kernel */
66 } /* namespace filter */
67 } /* namespace gr */
68 
69 #endif /* INCLUDED_FILTER_FIR_FILTER_H */
Definition: fir_filter.h:26
void filterN(OUT_T output[], const IN_T input[], unsigned long n)
int d_naligned
Definition: fir_filter.h:57
std::vector< volk::vector< TAP_T > > d_aligned_taps
Definition: fir_filter.h:54
void filterNdec(OUT_T output[], const IN_T input[], unsigned long n, unsigned int decimate)
fir_filter(const std::vector< TAP_T > &taps)
std::vector< TAP_T > taps() const
void update_tap(TAP_T t, unsigned int index)
fir_filter & operator=(const fir_filter &)=delete
int d_align
Definition: fir_filter.h:56
std::vector< TAP_T > d_taps
Definition: fir_filter.h:52
unsigned int ntaps() const
volk::vector< OUT_T > d_output
Definition: fir_filter.h:55
fir_filter(const fir_filter &)=delete
unsigned int d_ntaps
Definition: fir_filter.h:53
OUT_T filter(const IN_T input[]) const
void set_taps(const std::vector< TAP_T > &taps)
fir_filter & operator=(fir_filter &&)=default
fir_filter(fir_filter &&)=default
#define FILTER_API
Definition: gr-filter/include/gnuradio/filter/api.h:18
static constexpr float taps[NSTEPS+1][NTAPS]
Definition: interpolator_taps.h:9
fir_filter< gr_complex, gr_complex, float > fir_filter_ccf
Definition: fir_filter.h:60
fir_filter< float, std::int16_t, float > fir_filter_fsf
Definition: fir_filter.h:64
fir_filter< gr_complex, gr_complex, gr_complex > fir_filter_ccc
Definition: fir_filter.h:62
fir_filter< std::int16_t, gr_complex, gr_complex > fir_filter_scc
Definition: fir_filter.h:63
fir_filter< float, gr_complex, gr_complex > fir_filter_fcc
Definition: fir_filter.h:61
fir_filter< float, float, float > fir_filter_fff
Definition: fir_filter.h:59
GNU Radio logging wrapper.
Definition: basic_block.h:29