mirror of https://github.com/gnss-sdr/gnss-sdr
94 lines
3.0 KiB
C++
94 lines
3.0 KiB
C++
/*!
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* \file direct_resampler_conditioner_cc.h
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*
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* \brief Direct resampler with
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* gr_complex input and gr_complex output
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* \author Luis Esteve, 2011. luis(at)epsilon-formacion.com
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*
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* Detailed description of the file here if needed.
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*
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* This block takes in a signal stream and performs direct
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* resampling.
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*
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* The theory behind this block can be found in Chapter 7.5 of
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* the following book.
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*
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* \param sample_freq_in (double) Specifies the sampling frequency of the input signal
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* \param sample_freq_out (double) Specifies the sampling frequency of the output signal
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*
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* -------------------------------------------------------------------------
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*
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* Copyright (C) 2010-2011 (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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* GNSS-SDR is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* at your option) any later version.
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*
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* GNSS-SDR is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
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*
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* -------------------------------------------------------------------------
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*/
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#ifndef INCLUDED_DIRECT_RESAMPLER_CONDITIONER_CC_H
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#define INCLUDED_DIRECT_RESAMPLER_CONDITIONER_CC_H
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#include <gnuradio/gr_block.h>
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class direct_resampler_conditioner_cc;
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typedef boost::shared_ptr<direct_resampler_conditioner_cc>
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direct_resampler_conditioner_cc_sptr;
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direct_resampler_conditioner_cc_sptr
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direct_resampler_make_conditioner_cc(double sample_freq_in,
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double sample_freq_out);
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class direct_resampler_conditioner_cc: public gr_block
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{
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private:
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friend direct_resampler_conditioner_cc_sptr
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direct_resampler_make_conditioner_cc(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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unsigned int d_phase;
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unsigned int d_lphase;
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unsigned int d_phase_step;
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unsigned int d_history;
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direct_resampler_conditioner_cc(double sample_freq_in,
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double sample_freq_out);
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public:
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~direct_resampler_conditioner_cc();
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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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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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};
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#endif /* INCLUDED_DIRECT_RESAMPLER_CONDITIONER_CC_H */
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