GNU Radio 3.7.1 C++ API
fmdet_cf.h
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00001 /* -*- c++ -*- */
00002 /*
00003  * Copyright 2008,2012 Free Software Foundation, Inc.
00004  *
00005  * This file is part of GNU Radio
00006  *
00007  * GNU Radio is free software; you can redistribute it and/or modify
00008  * it under the terms of the GNU General Public License as published by
00009  * the Free Software Foundation; either version 3, or (at your option)
00010  * any later version.
00011  *
00012  * GNU Radio is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU General Public License
00018  * along with GNU Radio; see the file COPYING.  If not, write to
00019  * the Free Software Foundation, Inc., 51 Franklin Street,
00020  * Boston, MA 02110-1301, USA.
00021  */
00022 
00023 #ifndef INCLUDED_ANALOG_FMDET_CF_H
00024 #define INCLUDED_ANALOG_FMDET_CF_H
00025 
00026 #include <gnuradio/analog/api.h>
00027 #include <gnuradio/sync_block.h>
00028 
00029 namespace gr {
00030   namespace analog {
00031 
00032     /*!
00033      * \brief Implements an IQ slope detector
00034      * \ingroup modulators_blk 
00035      *
00036      * \details
00037      * input: stream of complex; output: stream of floats
00038      *
00039      * This implements a limiting slope detector. The limiter is in
00040      * the normalization by the magnitude of the sample
00041      */
00042     class ANALOG_API fmdet_cf : virtual public sync_block
00043     {
00044     public:
00045       // gr::analog::fmdet_cf::sptr
00046       typedef boost::shared_ptr<fmdet_cf> sptr;
00047 
00048       /*!
00049        * \brief Make FM detector block.
00050        *
00051        * \param samplerate sample rate of signal (is not used; to be removed)
00052        * \param freq_low lowest frequency of signal (Hz)
00053        * \param freq_high highest frequency of signal (Hz)
00054        * \param scl scale factor
00055        */
00056       static sptr make(float samplerate, float freq_low,
00057                        float freq_high, float scl);
00058 
00059       virtual void set_scale(float scl) = 0;
00060       virtual void set_freq_range(float freq_low, float freq_high) = 0;
00061 
00062       virtual float freq() const = 0;
00063       virtual float freq_high() const = 0;
00064       virtual float freq_low() const = 0;
00065       virtual float scale() const = 0;
00066       virtual float bias() const = 0;
00067     };
00068 
00069   } /* namespace analog */
00070 } /* namespace gr */
00071 
00072 #endif /* INCLUDED_ANALOG_FMDET_CF_H */