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/* -*- c++ -*- */
/*
* Copyright 2008,2012 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* GNU Radio is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* GNU Radio is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Radio; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifndef INCLUDED_ANALOG_FMDET_CF_H
#define INCLUDED_ANALOG_FMDET_CF_H
#include <analog/api.h>
#include <gr_sync_block.h>
namespace gr {
namespace analog {
/*!
* \brief Implements an IQ slope detector
*
* input: stream of complex; output: stream of floats
*
* This implements a limiting slope detector. The limiter is in
* the normalization by the magnitude of the sample
*/
class ANALOG_API fmdet_cf : virtual public gr_sync_block
{
public:
// gr::analog::fmdet_cf::sptr
typedef boost::shared_ptr<fmdet_cf> sptr;
/*!
* \brief Make FM detector block.
*
* \param samplerate sample rate of signal (is not used; to be removed)
* \param freq_low lowest frequency of signal (Hz)
* \param freq_high highest frequency of signal (Hz)
* \param scl scale factor
*/
static sptr make(float samplerate, float freq_low,
float freq_high, float scl);
virtual void set_scale(float scl) = 0;
virtual void set_freq_range(float freq_low, float freq_high) = 0;
virtual float freq() const = 0;
virtual float freq_high() const = 0;
virtual float freq_low() const = 0;
virtual float scale() const = 0;
virtual float bias() const = 0;
};
} /* namespace analog */
} /* namespace gr */
#endif /* INCLUDED_ANALOG_FMDET_CF_H */
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