3 * Copyright 2006,2011 Free Software Foundation, Inc.
5 * This file is part of GNU Radio
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)
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.
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.
23 #ifndef INCLUDED_GRI_GOERTZEL_H
24 #define INCLUDED_GRI_GOERTZEL_H
29 * \brief Implements Goertzel single-bin DFT calculation
36 gri_goertzel(int rate, int len, float freq);
37 void gri_setparms(int rate, int len, float freq);
39 // Process a input array
40 gr_complex batch(float *in);
42 // Process sample by sample
43 void input(const float &in);
45 bool ready() const { return d_processed == d_len; }
56 #endif /* INCLUDED_GRI_GOERTZEL_H */