3 * Copyright 2006 Free Software Foundation, Inc.
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23 #ifndef INCLUDED_GR_ADAPTIVE_FIR_CCF_H
24 #define INCLUDED_GR_ADAPTIVE_FIR_CCF_H
26 #include <gr_sync_decimator.h>
29 * \brief Adaptive FIR filter with gr_complex input, gr_complex output and float taps
32 class gr_adaptive_fir_ccf : public gr_sync_decimator
35 std::vector<float> d_new_taps;
40 std::vector<float> d_taps;
42 // Override to calculate error signal per output
43 virtual float error(const gr_complex &out) = 0;
45 // Override to calculate new weight from old, corresponding input
46 virtual void update_tap(float &tap, const gr_complex &in) = 0;
49 gr_adaptive_fir_ccf(char *name, int decimation, const std::vector<float> &taps);
50 void set_taps(const std::vector<float> &taps);
52 int work(int noutput_items,
53 gr_vector_const_void_star &input_items,
54 gr_vector_void_star &output_items);