/* -*- 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) override; int general_work(int noutput_items, gr_vector_int& ninput_items, gr_vector_const_void_star& input_items, gr_vector_void_star& output_items) override; 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 */