GNU Radio v3.6.2-149-ga6d285d9 C++ API
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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 <analog/api.h> 00027 #include <gr_sync_block.h> 00028 00029 namespace gr { 00030 namespace analog { 00031 00032 /*! 00033 * \brief Implements an IQ slope detector 00034 * 00035 * input: stream of complex; output: stream of floats 00036 * 00037 * This implements a limiting slope detector. The limiter is in 00038 * the normalization by the magnitude of the sample 00039 */ 00040 class ANALOG_API fmdet_cf : virtual public gr_sync_block 00041 { 00042 public: 00043 // gr::analog::fmdet_cf::sptr 00044 typedef boost::shared_ptr<fmdet_cf> sptr; 00045 00046 /*! 00047 * \brief Make FM detector block. 00048 * 00049 * \param samplerate sample rate of signal (is not used; to be removed) 00050 * \param freq_low lowest frequency of signal (Hz) 00051 * \param freq_high highest frequency of signal (Hz) 00052 * \param scl scale factor 00053 */ 00054 static sptr make(float samplerate, float freq_low, 00055 float freq_high, float scl); 00056 00057 virtual void set_scale(float scl) = 0; 00058 virtual void set_freq_range(float freq_low, float freq_high) = 0; 00059 00060 virtual float freq() const = 0; 00061 virtual float freq_high() const = 0; 00062 virtual float freq_low() const = 0; 00063 virtual float scale() const = 0; 00064 virtual float bias() const = 0; 00065 }; 00066 00067 } /* namespace analog */ 00068 } /* namespace gr */ 00069 00070 #endif /* INCLUDED_ANALOG_FMDET_CF_H */