/*! * \file direct_resampler_conditioner_cb.h * \brief Nearest neighborhood resampler with * std::complex input and std::complex output * \author Luis Esteve, 2011. luis(at)epsilon-formacion.com * * * ----------------------------------------------------------------------------- * * Copyright (C) 2010-2020 (see AUTHORS file for a list of contributors) * * GNSS-SDR is a software defined Global Navigation * Satellite Systems receiver * * This file is part of GNSS-SDR. * * SPDX-License-Identifier: GPL-3.0-or-later * * ----------------------------------------------------------------------------- */ #ifndef GNSS_SDR_DIRECT_RESAMPLER_CONDITIONER_CB_H #define GNSS_SDR_DIRECT_RESAMPLER_CONDITIONER_CB_H #include "gnss_block_interface.h" #include #include /** \addtogroup Resampler * \{ */ /** \addtogroup Resampler_gnuradio_blocks * GNU Radio blocks for input signal resampling * \{ */ class direct_resampler_conditioner_cb; using direct_resampler_conditioner_cb_sptr = gnss_shared_ptr; direct_resampler_conditioner_cb_sptr direct_resampler_make_conditioner_cb( double sample_freq_in, double sample_freq_out); /*! * \brief This class implements a direct resampler conditioner for std::complex * * Direct resampling without interpolation */ class direct_resampler_conditioner_cb : public gr::block { public: ~direct_resampler_conditioner_cb() = default; inline unsigned int sample_freq_in() const { return d_sample_freq_in; } inline unsigned int sample_freq_out() const { return d_sample_freq_out; } 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); private: friend direct_resampler_conditioner_cb_sptr direct_resampler_make_conditioner_cb( double sample_freq_in, double sample_freq_out); direct_resampler_conditioner_cb( double sample_freq_in, double sample_freq_out); double d_sample_freq_in; double d_sample_freq_out; uint32_t d_phase; uint32_t d_lphase; uint32_t d_phase_step; }; /** \} */ /** \} */ #endif // GNSS_SDR_DIRECT_RESAMPLER_CONDITIONER_CB_H