GNU Radio 3.6.4 C++ API
gr_adaptive_fir_ccc.h
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1 /* -*- c++ -*- */
2 /*
3  * Copyright 2011 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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14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15  * GNU General Public License for more details.
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22 
23 #ifndef INCLUDED_GR_ADAPTIVE_FIR_CCC_H
24 #define INCLUDED_GR_ADAPTIVE_FIR_CCC_H
25 
26 #include <gr_core_api.h>
27 #include <gr_sync_decimator.h>
28 
29 /*!
30  * \brief Adaptive FIR filter with gr_complex input, gr_complex output and float taps
31  * \ingroup filter_blk
32  */
34 {
35 private:
36  std::vector<gr_complex> d_new_taps;
37  bool d_updated;
38 
39 protected:
41  std::vector<gr_complex> d_taps;
42 
43  // Override to calculate error signal per output
44  virtual gr_complex error(const gr_complex &out) = 0;
45 
46  // Override to calculate new weight from old, corresponding input
47  virtual void update_tap(gr_complex &tap, const gr_complex &in) = 0;
48 
49  gr_complex filter(gr_complex *x);
50 
51  gr_adaptive_fir_ccc(const char *name, int decimation,
52  const std::vector<gr_complex> &taps);
53 
54 public:
55  void set_taps(const std::vector<gr_complex> &taps);
56 
57  int work(int noutput_items,
58  gr_vector_const_void_star &input_items,
59  gr_vector_void_star &output_items);
60 };
61 
62 #endif