/* -*- c++ -*- */ /* * Copyright 2004,2011,2012 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_DIGITAL_CLOCK_RECOVERY_MM_FF_IMPL_H #define INCLUDED_DIGITAL_CLOCK_RECOVERY_MM_FF_IMPL_H #include <digital/clock_recovery_mm_ff.h> #include <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){ d_omega = omega; d_min_omega = omega*(1.0 - d_omega_relative_limit); d_max_omega = omega*(1.0 + d_omega_relative_limit); d_omega_mid = 0.5*(d_min_omega+d_max_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_min_omega; // minimum allowed omega float d_max_omega; // maximum allowed omeg float d_omega_relative_limit; // used to compute min and max omega float d_omega_mid; // average omega float d_last_sample; filter::mmse_fir_interpolator_ff *d_interp; bool d_verbose; }; } /* namespace digital */ } /* namespace gr */ #endif /* INCLUDED_DIGITAL_CLOCK_RECOVERY_MM_FF_IMPL_H */