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/* -*- c++ -*- */
/*
* Copyright 2008 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_GR_FMDET_CF_H
#define INCLUDED_GR_FMDET_CF_H
#include <gr_core_api.h>
#include <gr_sync_block.h>
class gr_fmdet_cf;
typedef boost::shared_ptr<gr_fmdet_cf> gr_fmdet_cf_sptr;
GR_CORE_API gr_fmdet_cf_sptr gr_make_fmdet_cf (float samplerate, float freq_low, float freq_high, float scl);
class gr_fir_ccf;
/*!
* \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 GR_CORE_API gr_fmdet_cf : public gr_sync_block
{
friend GR_CORE_API gr_fmdet_cf_sptr gr_make_fmdet_cf (float samplerate, float freq_low,
float freq_high, float scl);
gr_complex d_S1,d_S2,d_S3,d_S4;
float d_freq,d_freqlo,d_freqhi,d_scl,d_bias;
gr_fir_ccf* d_filter;
gr_fmdet_cf (float samplerate, float freq_low, float freq_high, float scl);
int work (int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items);
};
#endif
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