GNU Radio 3.5.3.2 C++ API
gr_fmdet_cf.h
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1 /* -*- c++ -*- */
2 /*
3  * Copyright 2008 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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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
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21  */
22 
23 #ifndef INCLUDED_GR_FMDET_CF_H
24 #define INCLUDED_GR_FMDET_CF_H
25 
26 #include <gr_core_api.h>
27 #include <gr_sync_block.h>
28 
29 class gr_fmdet_cf;
31 
32 GR_CORE_API gr_fmdet_cf_sptr gr_make_fmdet_cf (float samplerate, float freq_low, float freq_high, float scl);
33 
34 class gr_fir_ccf;
35 
36 
37 /*!
38  * \brief Implements an IQ slope detector
39  *
40  *
41  * input: stream of complex; output: stream of floats
42  *
43  * This implements a limiting slope detector. The limiter is in the
44  * normalization by the magnitude of the sample
45  */
46 
48 {
49  friend GR_CORE_API gr_fmdet_cf_sptr gr_make_fmdet_cf (float samplerate, float freq_low,
50  float freq_high, float scl);
51 
52  gr_complex d_S1,d_S2,d_S3,d_S4;
53  float d_freq,d_freqlo,d_freqhi,d_scl,d_bias;
54  gr_fir_ccf* d_filter;
55  gr_fmdet_cf (float samplerate, float freq_low, float freq_high, float scl);
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 
63 #endif