mirror of https://github.com/gnss-sdr/gnss-sdr
58 lines
1.9 KiB
C++
58 lines
1.9 KiB
C++
/*!
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* \file short_x2_to_cshort.cc
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* \brief Adapts two short streams into a std::complex<short> stream
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* \author Carles Fernandez Prades, cfernandez(at)cttc.es
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*
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* -----------------------------------------------------------------------------
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*
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* GNSS-SDR is a Global Navigation Satellite System software-defined receiver.
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* This file is part of GNSS-SDR.
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*
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* Copyright (C) 2010-2020 (see AUTHORS file for a list of contributors)
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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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#include "short_x2_to_cshort.h"
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#include <gnuradio/io_signature.h>
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#include <volk_gnsssdr/volk_gnsssdr.h>
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#include <algorithm> // for max
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#include <complex> // for complex
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short_x2_to_cshort_sptr make_short_x2_to_cshort()
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{
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return short_x2_to_cshort_sptr(new short_x2_to_cshort());
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}
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short_x2_to_cshort::short_x2_to_cshort() : sync_block("short_x2_to_cshort",
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gr::io_signature::make(2, 2, sizeof(int16_t)),
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gr::io_signature::make(1, 1, sizeof(lv_16sc_t)))
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{
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const auto alignment_multiple = static_cast<int>(volk_gnsssdr_get_alignment() / sizeof(lv_16sc_t));
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set_alignment(std::max(1, alignment_multiple));
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}
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int short_x2_to_cshort::work(int noutput_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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const auto *in0 = reinterpret_cast<const int16_t *>(input_items[0]);
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const auto *in1 = reinterpret_cast<const int16_t *>(input_items[1]);
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auto *out = reinterpret_cast<lv_16sc_t *>(output_items[0]);
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// This could be put into a volk kernel
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int16_t real_part;
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int16_t imag_part;
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for (int number = 0; number < noutput_items; number++)
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{
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real_part = *in0++;
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imag_part = *in1++;
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*out++ = lv_cmake(real_part, imag_part);
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}
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return noutput_items;
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}
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