GNU Radio 3.7.1 C++ API
quadrature_demod_cf.h
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00001 /* -*- c++ -*- */
00002 /*
00003  * Copyright 2004,2012 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_QUADRATURE_DEMOD_CF_H
00024 #define INCLUDED_ANALOG_QUADRATURE_DEMOD_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 quadrature demodulator: complex in, float out
00034      * \ingroup modulators_blk
00035      *
00036      * \details
00037      * This can be used to demod FM, FSK, GMSK, etc.
00038      * The input is complex baseband.
00039      */
00040     class ANALOG_API quadrature_demod_cf : virtual public sync_block
00041     {
00042     public:
00043       // gr::analog::quadrature_demod_cf::sptr
00044       typedef boost::shared_ptr<quadrature_demod_cf> sptr;
00045 
00046       /* \brief Make a quadrature demodulator block.
00047        *
00048        * \param gain Gain setting to adjust the output amplitude. Set
00049        *             based on converting the phase difference between
00050        *             samples to a nominal output value.
00051        */
00052       static sptr make(float gain);
00053 
00054       virtual void set_gain(float gain) = 0;
00055       virtual float gain() const = 0;
00056     };
00057 
00058   } /* namespace analog */
00059 } /* namespace gr */
00060 
00061 #endif /* INCLUDED_ANALOG_QUADRATURE_DEMOD_CF_H */