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gnss-sdr/src/algorithms/libs/conjugate_cc.cc

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/*!
* \file conjugate_cc.cc
* \brief Conjugate a stream of gr_complex
* \author Carles Fernandez Prades, cfernandez(at)cttc.es
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
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*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
*
* This file is part of GNSS-SDR.
*
* GNSS-SDR 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 of the License, or
* (at your option) any later version.
*
* GNSS-SDR 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 GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
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*
* -------------------------------------------------------------------------
*/
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#include "conjugate_cc.h"
#include <gnuradio/io_signature.h>
#include <volk/volk.h>
conjugate_cc_sptr make_conjugate_cc()
{
return conjugate_cc_sptr(new conjugate_cc());
}
conjugate_cc::conjugate_cc() : gr::sync_block("conjugate_cc",
gr::io_signature::make(1, 1, sizeof(gr_complex)),
gr::io_signature::make(1, 1, sizeof(gr_complex)))
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{
const int alignment_multiple = volk_get_alignment() / sizeof(gr_complex);
set_alignment(std::max(1, alignment_multiple));
}
int conjugate_cc::work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
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{
const gr_complex *in = reinterpret_cast<const gr_complex *>(input_items[0]);
gr_complex *out = reinterpret_cast<gr_complex *>(output_items[0]);
volk_32fc_conjugate_32fc(out, in, noutput_items);
return noutput_items;
}