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/* -*- c++ -*- */
/*
* Copyright 2004,2011,2012,2014 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifndef INCLUDED_DIGITAL_CLOCK_RECOVERY_MM_FF_IMPL_H
#define INCLUDED_DIGITAL_CLOCK_RECOVERY_MM_FF_IMPL_H
#include <gnuradio/digital/clock_recovery_mm_ff.h>
#include <gnuradio/filter/mmse_fir_interpolator_ff.h>
namespace gr {
namespace digital {
class clock_recovery_mm_ff_impl : public clock_recovery_mm_ff
{
public:
clock_recovery_mm_ff_impl(float omega,
float gain_omega,
float mu,
float gain_mu,
float omega_relative_limi);
~clock_recovery_mm_ff_impl();
void forecast(int noutput_items, gr_vector_int& ninput_items_required);
int general_work(int noutput_items,
gr_vector_int& ninput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items);
float mu() const { return d_mu; }
float omega() const { return d_omega; }
float gain_mu() const { return d_gain_mu; }
float gain_omega() const { return d_gain_omega; }
void set_verbose(bool verbose) { d_verbose = verbose; }
void set_gain_mu(float gain_mu) { d_gain_mu = gain_mu; }
void set_gain_omega(float gain_omega) { d_gain_omega = gain_omega; }
void set_mu(float mu) { d_mu = mu; }
void set_omega(float omega);
private:
float d_mu; // fractional sample position [0.0, 1.0]
float d_gain_mu; // gain for adjusting mu
float d_omega; // nominal frequency
float d_gain_omega; // gain for adjusting omega
float d_omega_relative_limit; // used to compute min and max omega
float d_omega_mid; // average omega
float d_omega_lim; // actual omega clipping limit
float d_last_sample;
filter::mmse_fir_interpolator_ff* d_interp;
bool d_verbose;
float slice(float x) { return x < 0 ? -1.0F : 1.0F; }
};
} /* namespace digital */
} /* namespace gr */
#endif /* INCLUDED_DIGITAL_CLOCK_RECOVERY_MM_FF_IMPL_H */
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