mirror of
https://github.com/gnss-sdr/gnss-sdr
synced 2024-06-25 06:23:18 +00:00
69 lines
2.1 KiB
C++
69 lines
2.1 KiB
C++
/*!
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* \file beamformer.cc
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*
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* \brief Unpacks byte samples to NSR 2 bits samples
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* \author Javier Arribas jarribas (at) cttc.es
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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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#include "beamformer.h"
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#include <gnuradio/io_signature.h>
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#include <cstddef>
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beamformer_sptr make_beamformer_sptr()
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{
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return beamformer_sptr(new beamformer());
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}
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beamformer::beamformer()
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: gr::sync_block("beamformer",
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gr::io_signature::make(GNSS_SDR_BEAMFORMER_CHANNELS, GNSS_SDR_BEAMFORMER_CHANNELS, sizeof(gr_complex)),
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gr::io_signature::make(1, 1, sizeof(gr_complex)))
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{
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}
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int beamformer::work(int noutput_items, 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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auto *out = reinterpret_cast<gr_complex *>(output_items[0]);
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// channel output buffers
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// gr_complex *ch1 = (gr_complex *) input_items[0];
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// gr_complex *ch2 = (gr_complex *) input_items[1];
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// gr_complex *ch3 = (gr_complex *) input_items[2];
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// gr_complex *ch4 = (gr_complex *) input_items[3];
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// gr_complex *ch5 = (gr_complex *) input_items[4];
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// gr_complex *ch6 = (gr_complex *) input_items[5];
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// gr_complex *ch7 = (gr_complex *) input_items[6];
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// gr_complex *ch8 = (gr_complex *) input_items[7];
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// NON-VOLK beamforming operation
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// TODO: Implement VOLK SIMD-accelerated beamformer!
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gr_complex sum;
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for (int n = 0; n < noutput_items; n++)
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{
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sum = gr_complex(0, 0);
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for (size_t i = 0; i < weight_vector.size(); i++)
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{
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sum = sum + (reinterpret_cast<const gr_complex *>(input_items[i]))[n] * weight_vector[i];
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}
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out[n] = sum;
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}
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return noutput_items;
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}
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