3 * Copyright 2006,2010 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.
27 #include <gr_goertzel_fc.h>
28 #include <gr_io_signature.h>
32 gr_make_goertzel_fc(int rate, int len, float freq)
34 return gnuradio::get_initial_sptr(new gr_goertzel_fc(rate, len, freq));
37 gr_goertzel_fc::gr_goertzel_fc(int rate, int len, float freq)
38 : gr_sync_decimator("goertzel_fc",
39 gr_make_io_signature (1, 1, sizeof (float)),
40 gr_make_io_signature (1, 1, sizeof (gr_complex)),
42 d_goertzel(rate, len, freq)
47 int gr_goertzel_fc::work(int noutput_items,
48 gr_vector_const_void_star &input_items,
49 gr_vector_void_star &output_items)
51 float *in = (float *)input_items[0];
52 gr_complex *out = (gr_complex *)output_items[0];
54 for (int i = 0; i < noutput_items; i++) {
55 *out++ = d_goertzel.batch(in);