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