3 * Copyright 2008 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_GR_FMDET_CF_H
24 #define INCLUDED_GR_FMDET_CF_H
26 #include <gr_sync_block.h>
29 typedef boost::shared_ptr<gr_fmdet_cf> gr_fmdet_cf_sptr;
31 gr_fmdet_cf_sptr gr_make_fmdet_cf (float samplerate, float freq_low, float freq_high, float scl);
34 * \brief Implements an IQ slope detector
37 * input: stream of complex; output: stream of floats
39 * This implements a limiting slope detector. The limiter is in the
40 * normalization by the magnitude of the sample
43 class gr_fmdet_cf : public gr_sync_block
45 friend gr_fmdet_cf_sptr gr_make_fmdet_cf (float samplerate, float freq_low,
46 float freq_high, float scl);
48 gr_complex d_S1,d_S2,d_S3,d_S4;
49 float d_freq,d_freqlo,d_freqhi,d_scl,d_bias;
50 gr_fmdet_cf (float samplerate, float freq_low, float freq_high, float scl);
52 int work (int noutput_items,
53 gr_vector_const_void_star &input_items,
54 gr_vector_void_star &output_items);