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https://github.com/gnss-sdr/gnss-sdr
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Introducing a new resampler kernel for comparison
This commit is contained in:
Carles Fernandez
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/*!
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* \file volk_gnsssdr_16ic_resamplerxnpuppet_16ic.h
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* \brief VOLK_GNSSSDR puppet for the multiple 16-bit complex vector resampler kernel.
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* \authors <ul>
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* <li> Carles Fernandez Prades 2016 cfernandez at cttc dot cat
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* </ul>
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*
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* VOLK_GNSSSDR puppet for integrating the multiple resampler into the test system
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*
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* -------------------------------------------------------------------------
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*
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* Copyright (C) 2010-2015 (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_volk_gnsssdr_16ic_resamplerxnpuppet2_16ic_H
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#define INCLUDED_volk_gnsssdr_16ic_resamplerxnpuppet2_16ic_H
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#include "volk_gnsssdr/volk_gnsssdr_16ic_xn_resampler2_16ic_xn.h"
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#include <volk_gnsssdr/volk_gnsssdr_malloc.h>
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#include <volk_gnsssdr/volk_gnsssdr_complex.h>
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#include <volk_gnsssdr/volk_gnsssdr.h>
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#include <string.h>
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#ifdef LV_HAVE_GENERIC
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static inline void volk_gnsssdr_16ic_resamplerxnpuppet2_16ic_generic(lv_16sc_t* result, const lv_16sc_t* local_code, unsigned int num_points)
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{
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float code_phase_step_chips = 0.6;
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int code_length_chips = 2046;
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int num_out_vectors = 3;
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float rem_code_phase_chips = -0.234;
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float shifts_chips[3] = { -0.1, 0.0, 0.1 };
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lv_16sc_t** result_aux = (lv_16sc_t**)volk_gnsssdr_malloc(sizeof(lv_16sc_t*) * num_out_vectors, volk_gnsssdr_get_alignment());
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for(unsigned int n = 0; n < num_out_vectors; n++)
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{
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result_aux[n] = (lv_16sc_t*)volk_gnsssdr_malloc(sizeof(lv_16sc_t) * num_points, volk_gnsssdr_get_alignment());
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}
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volk_gnsssdr_16ic_xn_resampler2_16ic_xn_generic(result_aux, local_code, rem_code_phase_chips, code_phase_step_chips, shifts_chips, code_length_chips, num_out_vectors, num_points);
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memcpy((lv_16sc_t*)result, (lv_16sc_t*)result_aux[0], sizeof(lv_16sc_t) * num_points);
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for(unsigned int n = 0; n < num_out_vectors; n++)
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{
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volk_gnsssdr_free(result_aux[n]);
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}
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volk_gnsssdr_free(result_aux);
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}
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#endif /* LV_HAVE_GENERIC */
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#ifdef LV_HAVE_SSE3
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static inline void volk_gnsssdr_16ic_resamplerxnpuppet2_16ic_a_sse3(lv_16sc_t* result, const lv_16sc_t* local_code, unsigned int num_points)
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{
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float code_phase_step_chips = 0.6;
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int code_length_chips = 2046;
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int num_out_vectors = 3;
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float rem_code_phase_chips = -0.234;
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float shifts_chips[3] = { -0.1, 0.0, 0.1 };
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lv_16sc_t** result_aux = (lv_16sc_t**)volk_gnsssdr_malloc(sizeof(lv_16sc_t*) * num_out_vectors, volk_gnsssdr_get_alignment());
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for(unsigned int n = 0; n < num_out_vectors; n++)
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{
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result_aux[n] = (lv_16sc_t*)volk_gnsssdr_malloc(sizeof(lv_16sc_t) * num_points, volk_gnsssdr_get_alignment());
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}
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volk_gnsssdr_16ic_xn_resampler2_16ic_xn_a_sse3(result_aux, local_code, rem_code_phase_chips, code_phase_step_chips, shifts_chips, code_length_chips, num_out_vectors, num_points);
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memcpy((lv_16sc_t*)result, (lv_16sc_t*)result_aux[0], sizeof(lv_16sc_t) * num_points);
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for(unsigned int n = 0; n < num_out_vectors; n++)
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{
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volk_gnsssdr_free(result_aux[n]);
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}
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volk_gnsssdr_free(result_aux);
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}
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#endif
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#ifdef LV_HAVE_SSE3
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static inline void volk_gnsssdr_16ic_resamplerxnpuppet2_16ic_u_sse3(lv_16sc_t* result, const lv_16sc_t* local_code, unsigned int num_points)
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{
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float code_phase_step_chips = 0.6;
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int code_length_chips = 2046;
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int num_out_vectors = 3;
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float rem_code_phase_chips = -0.234;
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float shifts_chips[3] = { -0.1, 0.0, 0.1 };
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lv_16sc_t** result_aux = (lv_16sc_t**)volk_gnsssdr_malloc(sizeof(lv_16sc_t*) * num_out_vectors, volk_gnsssdr_get_alignment());
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for(unsigned int n = 0; n < num_out_vectors; n++)
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{
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result_aux[n] = (lv_16sc_t*)volk_gnsssdr_malloc(sizeof(lv_16sc_t) * num_points, volk_gnsssdr_get_alignment());
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}
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volk_gnsssdr_16ic_xn_resampler2_16ic_xn_u_sse3(result_aux, local_code, rem_code_phase_chips, code_phase_step_chips, shifts_chips, code_length_chips, num_out_vectors, num_points);
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memcpy((lv_16sc_t*)result, (lv_16sc_t*)result_aux[0], sizeof(lv_16sc_t) * num_points);
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for(unsigned int n = 0; n < num_out_vectors; n++)
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{
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volk_gnsssdr_free(result_aux[n]);
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}
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volk_gnsssdr_free(result_aux);
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}
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#endif
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#ifdef LV_HAVE_SSE4_1
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static inline void volk_gnsssdr_16ic_resamplerxnpuppet2_16ic_u_sse4_1(lv_16sc_t* result, const lv_16sc_t* local_code, unsigned int num_points)
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{
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float code_phase_step_chips = 0.6;
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int code_length_chips = 2046;
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int num_out_vectors = 3;
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float rem_code_phase_chips = -0.234;
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float shifts_chips[3] = { -0.1, 0.0, 0.1 };
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lv_16sc_t** result_aux = (lv_16sc_t**)volk_gnsssdr_malloc(sizeof(lv_16sc_t*) * num_out_vectors, volk_gnsssdr_get_alignment());
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for(unsigned int n = 0; n < num_out_vectors; n++)
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{
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result_aux[n] = (lv_16sc_t*)volk_gnsssdr_malloc(sizeof(lv_16sc_t) * num_points, volk_gnsssdr_get_alignment());
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}
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volk_gnsssdr_16ic_xn_resampler2_16ic_xn_u_sse4_1(result_aux, local_code, rem_code_phase_chips, code_phase_step_chips, shifts_chips, code_length_chips, num_out_vectors, num_points);
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memcpy((lv_16sc_t*)result, (lv_16sc_t*)result_aux[0], sizeof(lv_16sc_t) * num_points);
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for(unsigned int n = 0; n < num_out_vectors; n++)
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{
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volk_gnsssdr_free(result_aux[n]);
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}
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volk_gnsssdr_free(result_aux);
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}
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#endif
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#ifdef LV_HAVE_SSE4_1
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static inline void volk_gnsssdr_16ic_resamplerxnpuppet2_16ic_a_sse4_1(lv_16sc_t* result, const lv_16sc_t* local_code, unsigned int num_points)
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{
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float code_phase_step_chips = 0.6;
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int code_length_chips = 2046;
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int num_out_vectors = 3;
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float rem_code_phase_chips = -0.234;
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float shifts_chips[3] = { -0.1, 0.0, 0.1 };
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lv_16sc_t** result_aux = (lv_16sc_t**)volk_gnsssdr_malloc(sizeof(lv_16sc_t*) * num_out_vectors, volk_gnsssdr_get_alignment());
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for(unsigned int n = 0; n < num_out_vectors; n++)
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{
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result_aux[n] = (lv_16sc_t*)volk_gnsssdr_malloc(sizeof(lv_16sc_t) * num_points, volk_gnsssdr_get_alignment());
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}
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volk_gnsssdr_16ic_xn_resampler2_16ic_xn_a_sse4_1(result_aux, local_code, rem_code_phase_chips, code_phase_step_chips, shifts_chips, code_length_chips, num_out_vectors, num_points);
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memcpy((lv_16sc_t*)result, (lv_16sc_t*)result_aux[0], sizeof(lv_16sc_t) * num_points);
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for(unsigned int n = 0; n < num_out_vectors; n++)
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{
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volk_gnsssdr_free(result_aux[n]);
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}
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volk_gnsssdr_free(result_aux);
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}
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#endif
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#ifdef LV_HAVE_AVX
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static inline void volk_gnsssdr_16ic_resamplerxnpuppet2_16ic_u_avx(lv_16sc_t* result, const lv_16sc_t* local_code, unsigned int num_points)
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{
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float code_phase_step_chips = 0.6;
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int code_length_chips = 2046;
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int num_out_vectors = 3;
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float rem_code_phase_chips = -0.234;
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float shifts_chips[3] = { -0.1, 0.0, 0.1 };
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lv_16sc_t** result_aux = (lv_16sc_t**)volk_gnsssdr_malloc(sizeof(lv_16sc_t*) * num_out_vectors, volk_gnsssdr_get_alignment());
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for(unsigned int n = 0; n < num_out_vectors; n++)
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{
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result_aux[n] = (lv_16sc_t*)volk_gnsssdr_malloc(sizeof(lv_16sc_t) * num_points, volk_gnsssdr_get_alignment());
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}
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volk_gnsssdr_16ic_xn_resampler2_16ic_xn_u_avx(result_aux, local_code, rem_code_phase_chips, code_phase_step_chips, shifts_chips, code_length_chips, num_out_vectors, num_points);
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memcpy((lv_16sc_t*)result, (lv_16sc_t*)result_aux[0], sizeof(lv_16sc_t) * num_points);
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for(unsigned int n = 0; n < num_out_vectors; n++)
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{
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volk_gnsssdr_free(result_aux[n]);
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}
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volk_gnsssdr_free(result_aux);
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}
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#endif
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#ifdef LV_HAVE_AVX
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static inline void volk_gnsssdr_16ic_resamplerxnpuppet2_16ic_a_avx(lv_16sc_t* result, const lv_16sc_t* local_code, unsigned int num_points)
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{
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float code_phase_step_chips = 0.6;
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int code_length_chips = 2046;
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int num_out_vectors = 3;
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float rem_code_phase_chips = -0.234;
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float shifts_chips[3] = { -0.1, 0.0, 0.1 };
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lv_16sc_t** result_aux = (lv_16sc_t**)volk_gnsssdr_malloc(sizeof(lv_16sc_t*) * num_out_vectors, volk_gnsssdr_get_alignment());
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for(unsigned int n = 0; n < num_out_vectors; n++)
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{
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result_aux[n] = (lv_16sc_t*)volk_gnsssdr_malloc(sizeof(lv_16sc_t) * num_points, volk_gnsssdr_get_alignment());
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}
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volk_gnsssdr_16ic_xn_resampler2_16ic_xn_a_avx(result_aux, local_code, rem_code_phase_chips, code_phase_step_chips, shifts_chips, code_length_chips, num_out_vectors, num_points);
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memcpy((lv_16sc_t*)result, (lv_16sc_t*)result_aux[0], sizeof(lv_16sc_t) * num_points);
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for(unsigned int n = 0; n < num_out_vectors; n++)
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{
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volk_gnsssdr_free(result_aux[n]);
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}
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volk_gnsssdr_free(result_aux);
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}
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#endif
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#ifdef LV_HAVE_NEON
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static inline void volk_gnsssdr_16ic_resamplerxnpuppet2_16ic_neon(lv_16sc_t* result, const lv_16sc_t* local_code, unsigned int num_points)
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{
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float code_phase_step_chips = 0.6;
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int code_length_chips = 2046;
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int num_out_vectors = 3;
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float rem_code_phase_chips = -0.234;
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float shifts_chips[3] = { -0.1, 0.0, 0.1 };
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lv_16sc_t** result_aux = (lv_16sc_t**)volk_gnsssdr_malloc(sizeof(lv_16sc_t*) * num_out_vectors, volk_gnsssdr_get_alignment());
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for(unsigned int n = 0; n < num_out_vectors; n++)
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{
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result_aux[n] = (lv_16sc_t*)volk_gnsssdr_malloc(sizeof(lv_16sc_t) * num_points, volk_gnsssdr_get_alignment());
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}
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volk_gnsssdr_16ic_xn_resampler2_16ic_xn_neon(result_aux, local_code, rem_code_phase_chips, code_phase_step_chips, shifts_chips, code_length_chips, num_out_vectors, num_points);
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memcpy((lv_16sc_t*)result, (lv_16sc_t*)result_aux[0], sizeof(lv_16sc_t) * num_points);
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for(unsigned int n = 0; n < num_out_vectors; n++)
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{
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volk_gnsssdr_free(result_aux[n]);
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}
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volk_gnsssdr_free(result_aux);
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}
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#endif
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#endif // INCLUDED_volk_gnsssdr_16ic_resamplerpuppet_16ic_H
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@@ -0,0 +1,397 @@
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/*!
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* \file volk_gnsssdr_16ic_xn_resampler_16ic_xn.h
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* \brief VOLK_GNSSSDR kernel: Resamples N 16 bits integer short complex vectors using zero hold resample algorithm.
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* \authors <ul>
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* <li> Javier Arribas, 2015. jarribas(at)cttc.es
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* </ul>
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*
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* VOLK_GNSSSDR kernel that esamples N 16 bits integer short complex vectors using zero hold resample algorithm.
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* It is optimized to resample a sigle GNSS local code signal replica into N vectors fractional-resampled and fractional-delayed
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* (i.e. it creates the Early, Prompt, and Late code replicas)
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*
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* -------------------------------------------------------------------------
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*
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* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
|
||||
*
|
||||
* 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 <http://www.gnu.org/licenses/>.
|
||||
*
|
||||
* -------------------------------------------------------------------------
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||||
*/
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/*!
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* \page volk_gnsssdr_16ic_xn_resampler_16ic_xn
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*
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* \b Overview
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*
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* Resamples a complex vector (16-bit integer each component), providing \p num_out_vectors outputs.
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*
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* <b>Dispatcher Prototype</b>
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* \code
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* void volk_gnsssdr_16ic_xn_resampler_16ic_xn(lv_16sc_t** result, const lv_16sc_t* local_code, float* rem_code_phase_chips, float code_phase_step_chips, unsigned int code_length_chips, int num_out_vectors, unsigned int num_output_samples)
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* \endcode
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*
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* \b Inputs
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* \li local_code: One of the vectors to be multiplied.
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* \li rem_code_phase_chips: Remnant code phase [chips].
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* \li code_phase_step_chips: Phase increment per sample [chips/sample].
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* \li code_length_chips: Code length in chips.
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* \li num_out_vectors Number of output vectors.
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* \li num_output_samples: The number of data values to be in the resampled vector.
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*
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* \b Outputs
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* \li result: Pointer to a vector of pointers where the results will be stored.
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*
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*/
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#ifndef INCLUDED_volk_gnsssdr_16ic_xn_resampler2_16ic_xn_H
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#define INCLUDED_volk_gnsssdr_16ic_xn_resampler2_16ic_xn_H
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#include <math.h>
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#include <volk_gnsssdr/volk_gnsssdr_common.h>
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#include <volk_gnsssdr/volk_gnsssdr_complex.h>
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#ifdef LV_HAVE_GENERIC
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static inline void volk_gnsssdr_16ic_xn_resampler2_16ic_xn_generic(lv_16sc_t** result, const lv_16sc_t* local_code, float rem_code_phase_chips, float code_phase_step_chips, float* shifts_chips, unsigned int code_length_chips, int num_out_vectors, unsigned int num_output_samples)
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||||
{
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||||
int local_code_chip_index;
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for (int current_correlator_tap = 0; current_correlator_tap < num_out_vectors; current_correlator_tap++)
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||||
{
|
||||
for (int n = 0; n < num_output_samples; n++)
|
||||
{
|
||||
// resample code for current tap
|
||||
local_code_chip_index = (int)floor(code_phase_step_chips * (float)n + shifts_chips[current_correlator_tap] - rem_code_phase_chips);
|
||||
local_code_chip_index = local_code_chip_index % code_length_chips;
|
||||
//Take into account that in multitap correlators, the shifts can be negative!
|
||||
if (local_code_chip_index < 0) local_code_chip_index += code_length_chips;
|
||||
result[current_correlator_tap][n] = local_code[local_code_chip_index];
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#endif /*LV_HAVE_GENERIC*/
|
||||
|
||||
|
||||
#ifdef LV_HAVE_SSE4_1
|
||||
#include <smmintrin.h>
|
||||
static inline void volk_gnsssdr_16ic_xn_resampler2_16ic_xn_a_sse4_1(lv_16sc_t** result, const lv_16sc_t* local_code, float rem_code_phase_chips, float code_phase_step_chips, float* shifts_chips, unsigned int code_length_chips, int num_out_vectors, unsigned int num_output_samples)
|
||||
{
|
||||
lv_16sc_t** _result = result;
|
||||
const unsigned int quarterPoints = num_output_samples / 4;
|
||||
|
||||
const __m128 fours = _mm_set1_ps(4.0f);
|
||||
const __m128 rem_code_phase_chips_reg = _mm_set_ps1(rem_code_phase_chips);
|
||||
const __m128 code_phase_step_chips_reg = _mm_set_ps1(code_phase_step_chips);
|
||||
|
||||
__VOLK_ATTR_ALIGNED(16) int local_code_chip_index[4];
|
||||
int local_code_chip_index_;
|
||||
|
||||
const __m128i zeros = _mm_setzero_si128();
|
||||
const __m128 code_length_chips_reg_f = _mm_set_ps1((float)code_length_chips);
|
||||
const __m128i code_length_chips_reg_i = _mm_set1_epi32((int)code_length_chips);
|
||||
__m128i local_code_chip_index_reg, aux_i, negatives, i;
|
||||
__m128 aux, aux2, shifts_chips_reg, c, cTrunc, base;
|
||||
|
||||
for (int current_correlator_tap = 0; current_correlator_tap < num_out_vectors; current_correlator_tap++)
|
||||
{
|
||||
shifts_chips_reg = _mm_set_ps1((float)shifts_chips[current_correlator_tap]);
|
||||
aux2 = _mm_sub_ps(shifts_chips_reg, rem_code_phase_chips_reg);
|
||||
__m128 indexn = _mm_set_ps(3.0f, 2.0f, 1.0f, 0.0f);
|
||||
for(unsigned int n = 0; n < quarterPoints; n++)
|
||||
{
|
||||
aux = _mm_mul_ps(code_phase_step_chips_reg, indexn);
|
||||
aux = _mm_add_ps(aux, aux2);
|
||||
// floor
|
||||
aux = _mm_floor_ps(aux);
|
||||
|
||||
// fmod
|
||||
c = _mm_div_ps(aux, code_length_chips_reg_f);
|
||||
i = _mm_cvttps_epi32(c);
|
||||
cTrunc = _mm_cvtepi32_ps(i);
|
||||
base = _mm_mul_ps(cTrunc, code_length_chips_reg_f);
|
||||
local_code_chip_index_reg = _mm_cvtps_epi32(_mm_sub_ps(aux, base));
|
||||
|
||||
negatives = _mm_cmplt_epi32(local_code_chip_index_reg, zeros);
|
||||
aux_i = _mm_and_si128(code_length_chips_reg_i, negatives);
|
||||
local_code_chip_index_reg = _mm_add_epi32(local_code_chip_index_reg, aux_i);
|
||||
_mm_store_si128((__m128i*)local_code_chip_index, local_code_chip_index_reg);
|
||||
for(unsigned int k = 0; k < 4; ++k)
|
||||
{
|
||||
_result[current_correlator_tap][n * 4 + k] = local_code[local_code_chip_index[k]];
|
||||
}
|
||||
indexn = _mm_add_ps(indexn, fours);
|
||||
}
|
||||
for(unsigned int n = quarterPoints * 4; n < num_output_samples; n++)
|
||||
{
|
||||
// resample code for current tap
|
||||
local_code_chip_index_ = (int)floor(code_phase_step_chips * (float)n + shifts_chips[current_correlator_tap] - rem_code_phase_chips);
|
||||
local_code_chip_index_ = local_code_chip_index_ % code_length_chips;
|
||||
//Take into account that in multitap correlators, the shifts can be negative!
|
||||
if (local_code_chip_index_ < 0) local_code_chip_index_ += code_length_chips;
|
||||
_result[current_correlator_tap][n] = local_code[local_code_chip_index_];
|
||||
}
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
#ifdef LV_HAVE_SSE4_1
|
||||
#include <smmintrin.h>
|
||||
static inline void volk_gnsssdr_16ic_xn_resampler2_16ic_xn_u_sse4_1(lv_16sc_t** result, const lv_16sc_t* local_code, float rem_code_phase_chips, float code_phase_step_chips, float* shifts_chips, unsigned int code_length_chips, int num_out_vectors, unsigned int num_output_samples)
|
||||
{
|
||||
volk_gnsssdr_16ic_xn_resampler2_16ic_xn_a_sse4_1(result, local_code, rem_code_phase_chips, code_phase_step_chips, shifts_chips, code_length_chips, num_out_vectors, num_output_samples);
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
#ifdef LV_HAVE_SSE3
|
||||
#include <pmmintrin.h>
|
||||
static inline void volk_gnsssdr_16ic_xn_resampler2_16ic_xn_a_sse3(lv_16sc_t** result, const lv_16sc_t* local_code, float rem_code_phase_chips, float code_phase_step_chips, float* shifts_chips, unsigned int code_length_chips, int num_out_vectors, unsigned int num_output_samples)
|
||||
{
|
||||
lv_16sc_t** _result = result;
|
||||
const unsigned int quarterPoints = num_output_samples / 4;
|
||||
|
||||
const __m128 ones = _mm_set1_ps(1.0f);
|
||||
const __m128 fours = _mm_set1_ps(4.0f);
|
||||
const __m128 rem_code_phase_chips_reg = _mm_set_ps1(rem_code_phase_chips);
|
||||
const __m128 code_phase_step_chips_reg = _mm_set_ps1(code_phase_step_chips);
|
||||
|
||||
__VOLK_ATTR_ALIGNED(16) int local_code_chip_index[4];
|
||||
int local_code_chip_index_;
|
||||
|
||||
const __m128i zeros = _mm_setzero_si128();
|
||||
const __m128 code_length_chips_reg_f = _mm_set_ps1((float)code_length_chips);
|
||||
const __m128i code_length_chips_reg_i = _mm_set1_epi32((int)code_length_chips);
|
||||
__m128i local_code_chip_index_reg, aux_i, negatives, i;
|
||||
__m128 aux, aux2, shifts_chips_reg, fi, igx, j, c, cTrunc, base;
|
||||
|
||||
for (int current_correlator_tap = 0; current_correlator_tap < num_out_vectors; current_correlator_tap++)
|
||||
{
|
||||
shifts_chips_reg = _mm_set_ps1((float)shifts_chips[current_correlator_tap]);
|
||||
aux2 = _mm_sub_ps(shifts_chips_reg, rem_code_phase_chips_reg);
|
||||
__m128 indexn = _mm_set_ps(3.0f, 2.0f, 1.0f, 0.0f);
|
||||
for(unsigned int n = 0; n < quarterPoints; n++)
|
||||
{
|
||||
aux = _mm_mul_ps(code_phase_step_chips_reg, indexn);
|
||||
aux = _mm_add_ps(aux, aux2);
|
||||
// floor
|
||||
i = _mm_cvttps_epi32(aux);
|
||||
fi = _mm_cvtepi32_ps(i);
|
||||
igx = _mm_cmpgt_ps(fi, aux);
|
||||
j = _mm_and_ps(igx, ones);
|
||||
aux = _mm_sub_ps(fi, j);
|
||||
// fmod
|
||||
c = _mm_div_ps(aux, code_length_chips_reg_f);
|
||||
i = _mm_cvttps_epi32(c);
|
||||
cTrunc = _mm_cvtepi32_ps(i);
|
||||
base = _mm_mul_ps(cTrunc, code_length_chips_reg_f);
|
||||
local_code_chip_index_reg = _mm_cvtps_epi32(_mm_sub_ps(aux, base));
|
||||
|
||||
negatives = _mm_cmplt_epi32(local_code_chip_index_reg, zeros);
|
||||
aux_i = _mm_and_si128(code_length_chips_reg_i, negatives);
|
||||
local_code_chip_index_reg = _mm_add_epi32(local_code_chip_index_reg, aux_i);
|
||||
_mm_store_si128((__m128i*)local_code_chip_index, local_code_chip_index_reg);
|
||||
for(unsigned int k = 0; k < 4; ++k)
|
||||
{
|
||||
_result[current_correlator_tap][n * 4 + k] = local_code[local_code_chip_index[k]];
|
||||
}
|
||||
indexn = _mm_add_ps(indexn, fours);
|
||||
}
|
||||
for(unsigned int n = quarterPoints * 4; n < num_output_samples; n++)
|
||||
{
|
||||
// resample code for current tap
|
||||
local_code_chip_index_ = (int)floor(code_phase_step_chips * (float)n + shifts_chips[current_correlator_tap] - rem_code_phase_chips);
|
||||
local_code_chip_index_ = local_code_chip_index_ % code_length_chips;
|
||||
//Take into account that in multitap correlators, the shifts can be negative!
|
||||
if (local_code_chip_index_ < 0) local_code_chip_index_ += code_length_chips;
|
||||
_result[current_correlator_tap][n] = local_code[local_code_chip_index_];
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
#ifdef LV_HAVE_SSE3
|
||||
#include <pmmintrin.h>
|
||||
static inline void volk_gnsssdr_16ic_xn_resampler2_16ic_xn_u_sse3(lv_16sc_t** result, const lv_16sc_t* local_code, float rem_code_phase_chips, float code_phase_step_chips, float* shifts_chips, unsigned int code_length_chips, int num_out_vectors, unsigned int num_output_samples)
|
||||
{
|
||||
volk_gnsssdr_16ic_xn_resampler2_16ic_xn_a_sse3(result, local_code, rem_code_phase_chips, code_phase_step_chips, shifts_chips, code_length_chips, num_out_vectors, num_output_samples);
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
#ifdef LV_HAVE_AVX
|
||||
#include <immintrin.h>
|
||||
static inline void volk_gnsssdr_16ic_xn_resampler2_16ic_xn_a_avx(lv_16sc_t** result, const lv_16sc_t* local_code, float rem_code_phase_chips, float code_phase_step_chips, float* shifts_chips, unsigned int code_length_chips, int num_out_vectors, unsigned int num_output_samples)
|
||||
{
|
||||
lv_16sc_t** _result = result;
|
||||
const unsigned int avx_iters = num_output_samples / 8;
|
||||
|
||||
const __m256 eights = _mm256_set1_ps(8.0f);
|
||||
const __m256 rem_code_phase_chips_reg = _mm256_set1_ps(rem_code_phase_chips);
|
||||
const __m256 code_phase_step_chips_reg = _mm256_set1_ps(code_phase_step_chips);
|
||||
|
||||
__VOLK_ATTR_ALIGNED(32) int local_code_chip_index[8];
|
||||
int local_code_chip_index_;
|
||||
|
||||
const __m256 zeros = _mm256_setzero_ps();
|
||||
const __m256 code_length_chips_reg_f = _mm256_set1_ps((float)code_length_chips);
|
||||
|
||||
__m256i local_code_chip_index_reg, i;
|
||||
__m256 aux, aux2, shifts_chips_reg, c, cTrunc, base, negatives;
|
||||
|
||||
for (int current_correlator_tap = 0; current_correlator_tap < num_out_vectors; current_correlator_tap++)
|
||||
{
|
||||
shifts_chips_reg = _mm256_set1_ps((float)shifts_chips[current_correlator_tap]);
|
||||
aux2 = _mm256_sub_ps(shifts_chips_reg, rem_code_phase_chips_reg);
|
||||
__m256 indexn = _mm256_set_ps(7.0f, 6.0f, 5.0f, 4.0f, 3.0f, 2.0f, 1.0f, 0.0f);
|
||||
for(unsigned int n = 0; n < avx_iters; n++)
|
||||
{
|
||||
aux = _mm256_mul_ps(code_phase_step_chips_reg, indexn);
|
||||
aux = _mm256_add_ps(aux, aux2);
|
||||
// floor
|
||||
aux = _mm256_floor_ps(aux);
|
||||
|
||||
// fmod
|
||||
c = _mm256_div_ps(aux, code_length_chips_reg_f);
|
||||
i = _mm256_cvttps_epi32(c);
|
||||
cTrunc = _mm256_cvtepi32_ps(i);
|
||||
base = _mm256_mul_ps(cTrunc, code_length_chips_reg_f);
|
||||
aux = _mm256_sub_ps(aux, base);
|
||||
|
||||
negatives = _mm256_cmp_ps(aux, zeros, 0x01);
|
||||
aux2 = _mm256_and_ps(code_length_chips_reg_f, negatives);
|
||||
local_code_chip_index_reg = _mm256_cvtps_epi32(_mm256_add_ps(aux, aux2));
|
||||
_mm256_store_si256((__m256i*)local_code_chip_index, local_code_chip_index_reg);
|
||||
for(unsigned int k = 0; k < 8; ++k)
|
||||
{
|
||||
_result[current_correlator_tap][n * 8 + k] = local_code[local_code_chip_index[k]];
|
||||
}
|
||||
indexn = _mm256_add_ps(indexn, eights);
|
||||
}
|
||||
|
||||
for(unsigned int n = avx_iters * 8; n < num_output_samples; n++)
|
||||
{
|
||||
// resample code for current tap
|
||||
local_code_chip_index_ = (int)floor(code_phase_step_chips * (float)n + shifts_chips[current_correlator_tap] - rem_code_phase_chips);
|
||||
local_code_chip_index_ = local_code_chip_index_ % code_length_chips;
|
||||
//Take into account that in multitap correlators, the shifts can be negative!
|
||||
if (local_code_chip_index_ < 0) local_code_chip_index_ += code_length_chips;
|
||||
_result[current_correlator_tap][n] = local_code[local_code_chip_index_];
|
||||
}
|
||||
}
|
||||
_mm256_zeroupper();
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
#ifdef LV_HAVE_AVX
|
||||
#include <immintrin.h>
|
||||
static inline void volk_gnsssdr_16ic_xn_resampler2_16ic_xn_u_avx(lv_16sc_t** result, const lv_16sc_t* local_code, float rem_code_phase_chips, float code_phase_step_chips, float* shifts_chips, unsigned int code_length_chips, int num_out_vectors, unsigned int num_output_samples)
|
||||
{
|
||||
volk_gnsssdr_16ic_xn_resampler2_16ic_xn_a_avx(result, local_code, rem_code_phase_chips, code_phase_step_chips, shifts_chips, code_length_chips, num_out_vectors, num_output_samples);
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
#ifdef LV_HAVE_NEON
|
||||
#include <arm_neon.h>
|
||||
#include <volk_gnsssdr/volk_gnsssdr_neon_intrinsics.h>
|
||||
static inline void volk_gnsssdr_16ic_xn_resampler2_16ic_xn_neon(lv_16sc_t** result, const lv_16sc_t* local_code, float rem_code_phase_chips, float code_phase_step_chips, float* shifts_chips, unsigned int code_length_chips, int num_out_vectors, unsigned int num_output_samples)
|
||||
{
|
||||
lv_16sc_t** _result = result;
|
||||
const unsigned int neon_iters = num_output_samples / 4;
|
||||
const int32x4_t ones = vdupq_n_s32(1);
|
||||
const float32x4_t fours = vdupq_n_f32(4.0f);
|
||||
const float32x4_t rem_code_phase_chips_reg = vdupq_n_f32(rem_code_phase_chips);
|
||||
const float32x4_t code_phase_step_chips_reg = vdupq_n_f32(code_phase_step_chips);
|
||||
|
||||
__attribute__((aligned(16))) int local_code_chip_index[4];
|
||||
int local_code_chip_index_;
|
||||
|
||||
const int32x4_t zeros = vdupq_n_s32(0);
|
||||
const float32x4_t code_length_chips_reg_f = vdupq_n_f32((float)code_length_chips);
|
||||
const int32x4_t code_length_chips_reg_i = vdupq_n_s32((int)code_length_chips);
|
||||
int32x4_t local_code_chip_index_reg, aux_i, negatives, i;
|
||||
float32x4_t aux, aux2, shifts_chips_reg, fi, c, j, cTrunc, base;
|
||||
__attribute__((aligned(16))) float vec[4] = { 3.0f, 2.0f, 1.0f, 0.0f };
|
||||
uint32x4_t igx;
|
||||
float32x4_t half = vdupq_n_f32(0.5f);
|
||||
float32x4_t sign, PlusHalf, Round;
|
||||
for (int current_correlator_tap = 0; current_correlator_tap < num_out_vectors; current_correlator_tap++)
|
||||
{
|
||||
shifts_chips_reg = vdupq_n_f32((float)shifts_chips[current_correlator_tap]);
|
||||
aux2 = vsubq_f32(shifts_chips_reg, rem_code_phase_chips_reg);
|
||||
float32x4_t indexn = vld1q_f32((float*)vec);
|
||||
|
||||
for(unsigned int n = 0; n < neon_iters; n++)
|
||||
{
|
||||
aux = vmulq_f32(code_phase_step_chips_reg, indexn);
|
||||
aux = vaddq_f32(aux, aux2);
|
||||
// floor
|
||||
i = vcvtq_s32_f32(aux);
|
||||
fi = vcvtq_f32_s32(i);
|
||||
igx = vcgtq_f32(fi, aux);
|
||||
j = vreinterpretq_f32_s32(vandq_s32(vreinterpretq_s32_u32(igx), ones));
|
||||
aux = vsubq_f32(fi, j);
|
||||
|
||||
// fmod
|
||||
c = vdivq_f32(aux, code_length_chips_reg_f);
|
||||
i = vcvtq_s32_f32(c);
|
||||
cTrunc = vcvtq_f32_s32(i);
|
||||
base = vmulq_f32(cTrunc, code_length_chips_reg_f);
|
||||
aux = vsubq_f32(aux, base);
|
||||
sign = vcvtq_f32_u32((vshrq_n_u32(vreinterpretq_u32_f32(aux), 31)));
|
||||
PlusHalf = vaddq_f32(aux, half);
|
||||
Round = vsubq_f32(PlusHalf, sign);
|
||||
local_code_chip_index_reg = vcvtq_s32_f32(Round);
|
||||
|
||||
negatives = vreinterpretq_s32_u32(vcltq_s32(local_code_chip_index_reg, zeros));
|
||||
aux_i = vandq_s32(code_length_chips_reg_i, negatives);
|
||||
local_code_chip_index_reg = vaddq_s32(local_code_chip_index_reg, aux_i);
|
||||
vst1q_s32((int32_t*)local_code_chip_index, local_code_chip_index_reg);
|
||||
for(unsigned int k = 0; k < 4; ++k)
|
||||
{
|
||||
_result[current_correlator_tap][n * 4 + k] = local_code[local_code_chip_index[k]];
|
||||
}
|
||||
indexn = vaddq_f32(indexn, fours);
|
||||
}
|
||||
for(unsigned int n = neon_iters * 4; n < num_output_samples; n++)
|
||||
{
|
||||
// resample code for current tap
|
||||
local_code_chip_index_ = (int)floor(code_phase_step_chips * (float)n + shifts_chips[current_correlator_tap] - rem_code_phase_chips);
|
||||
local_code_chip_index_ = local_code_chip_index_ % code_length_chips;
|
||||
//Take into account that in multitap correlators, the shifts can be negative!
|
||||
if (local_code_chip_index_ < 0) local_code_chip_index_ += code_length_chips;
|
||||
_result[current_correlator_tap][n] = local_code[local_code_chip_index_];
|
||||
}
|
||||
}
|
||||
}
|
||||
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#endif
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#endif /*INCLUDED_volk_gnsssdr_16ic_xn_resampler_16ic_xn_H*/
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@@ -66,15 +66,9 @@
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#include <volk_gnsssdr/volk_gnsssdr_common.h>
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#include <volk_gnsssdr/volk_gnsssdr_complex.h>
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//#pragma STDC FENV_ACCESS ON
|
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#ifdef LV_HAVE_GENERIC
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//int round_int( float r ) {
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// return (r > 0.0) ? (r + 0.5) : (r - 0.5);
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//}
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static inline void volk_gnsssdr_16ic_xn_resampler_16ic_xn_generic(lv_16sc_t** result, const lv_16sc_t* local_code, float* rem_code_phase_chips, float code_phase_step_chips, unsigned int code_length_chips, int num_out_vectors, unsigned int num_output_samples)
|
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{
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||||
int local_code_chip_index;
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@@ -91,7 +85,6 @@ static inline void volk_gnsssdr_16ic_xn_resampler_16ic_xn_generic(lv_16sc_t** re
|
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result[current_vector][n] = local_code[local_code_chip_index];
|
||||
}
|
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}
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//std::cout<<std::endl;
|
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}
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||||
|
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#endif /*LV_HAVE_GENERIC*/
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@@ -102,7 +95,7 @@ static inline void volk_gnsssdr_16ic_xn_resampler_16ic_xn_generic(lv_16sc_t** re
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|
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static inline void volk_gnsssdr_16ic_xn_resampler_16ic_xn_a_sse2(lv_16sc_t** result, const lv_16sc_t* local_code, float* rem_code_phase_chips ,float code_phase_step_chips, unsigned int code_length_chips, int num_out_vectors, unsigned int num_output_samples)
|
||||
{
|
||||
_MM_SET_ROUNDING_MODE (_MM_ROUND_NEAREST);//_MM_ROUND_NEAREST, _MM_ROUND_DOWN, _MM_ROUND_UP, _MM_ROUND_TOWARD_ZERO
|
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_MM_SET_ROUNDING_MODE(_MM_ROUND_NEAREST);//_MM_ROUND_NEAREST, _MM_ROUND_DOWN, _MM_ROUND_UP, _MM_ROUND_TOWARD_ZERO
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unsigned int number;
|
||||
const unsigned int quarterPoints = num_output_samples / 4;
|
||||
|
||||
@@ -195,7 +188,7 @@ static inline void volk_gnsssdr_16ic_xn_resampler_16ic_xn_a_sse2(lv_16sc_t** res
|
||||
|
||||
static inline void volk_gnsssdr_16ic_xn_resampler_16ic_xn_u_sse2(lv_16sc_t** result, const lv_16sc_t* local_code, float* rem_code_phase_chips ,float code_phase_step_chips, unsigned int code_length_chips, int num_out_vectors, unsigned int num_output_samples)
|
||||
{
|
||||
_MM_SET_ROUNDING_MODE (_MM_ROUND_NEAREST);//_MM_ROUND_NEAREST, _MM_ROUND_DOWN, _MM_ROUND_UP, _MM_ROUND_TOWARD_ZERO
|
||||
_MM_SET_ROUNDING_MODE(_MM_ROUND_NEAREST);//_MM_ROUND_NEAREST, _MM_ROUND_DOWN, _MM_ROUND_UP, _MM_ROUND_TOWARD_ZERO
|
||||
unsigned int number;
|
||||
const unsigned int quarterPoints = num_output_samples / 4;
|
||||
|
||||
|
||||
@@ -116,7 +116,7 @@ static inline void volk_gnsssdr_32fc_resamplerxnpuppet_32fc_u_sse3(lv_32fc_t* re
|
||||
result_aux[n] = (lv_32fc_t*)volk_gnsssdr_malloc(sizeof(lv_32fc_t) * num_points, volk_gnsssdr_get_alignment());
|
||||
}
|
||||
|
||||
volk_gnsssdr_32fc_xn_resampler_32fc_xn_a_sse3(result_aux, local_code, rem_code_phase_chips, code_phase_step_chips, shifts_chips, code_length_chips, num_out_vectors, num_points);
|
||||
volk_gnsssdr_32fc_xn_resampler_32fc_xn_u_sse3(result_aux, local_code, rem_code_phase_chips, code_phase_step_chips, shifts_chips, code_length_chips, num_out_vectors, num_points);
|
||||
|
||||
memcpy((lv_32fc_t*)result, (lv_32fc_t*)result_aux[0], sizeof(lv_32fc_t) * num_points);
|
||||
|
||||
@@ -146,7 +146,7 @@ static inline void volk_gnsssdr_32fc_resamplerxnpuppet_32fc_u_sse4_1(lv_32fc_t*
|
||||
result_aux[n] = (lv_32fc_t*)volk_gnsssdr_malloc(sizeof(lv_32fc_t) * num_points, volk_gnsssdr_get_alignment());
|
||||
}
|
||||
|
||||
volk_gnsssdr_32fc_xn_resampler_32fc_xn_a_sse4_1(result_aux, local_code, rem_code_phase_chips, code_phase_step_chips, shifts_chips, code_length_chips, num_out_vectors, num_points);
|
||||
volk_gnsssdr_32fc_xn_resampler_32fc_xn_u_sse4_1(result_aux, local_code, rem_code_phase_chips, code_phase_step_chips, shifts_chips, code_length_chips, num_out_vectors, num_points);
|
||||
|
||||
memcpy((lv_32fc_t*)result, (lv_32fc_t*)result_aux[0], sizeof(lv_32fc_t) * num_points);
|
||||
|
||||
@@ -233,7 +233,7 @@ static inline void volk_gnsssdr_32fc_resamplerxnpuppet_32fc_u_avx(lv_32fc_t* res
|
||||
result_aux[n] = (lv_32fc_t*)volk_gnsssdr_malloc(sizeof(lv_32fc_t) * num_points, volk_gnsssdr_get_alignment());
|
||||
}
|
||||
|
||||
volk_gnsssdr_32fc_xn_resampler_32fc_xn_a_avx(result_aux, local_code, rem_code_phase_chips, code_phase_step_chips, shifts_chips, code_length_chips, num_out_vectors, num_points);
|
||||
volk_gnsssdr_32fc_xn_resampler_32fc_xn_u_avx(result_aux, local_code, rem_code_phase_chips, code_phase_step_chips, shifts_chips, code_length_chips, num_out_vectors, num_points);
|
||||
|
||||
memcpy((lv_32fc_t*)result, (lv_32fc_t*)result_aux[0], sizeof(lv_32fc_t) * num_points);
|
||||
|
||||
|
||||
@@ -87,6 +87,7 @@ std::vector<volk_gnsssdr_test_case_t> init_test_list(volk_gnsssdr_test_params_t
|
||||
(VOLK_INIT_PUPP(volk_gnsssdr_16ic_rotatorpuppet_16ic, volk_gnsssdr_16ic_s32fc_x2_rotator_16ic, test_params_int1))
|
||||
(VOLK_INIT_PUPP(volk_gnsssdr_16ic_resamplerpuppet_16ic, volk_gnsssdr_16ic_resampler_16ic, test_params))
|
||||
(VOLK_INIT_PUPP(volk_gnsssdr_16ic_resamplerxnpuppet_16ic, volk_gnsssdr_16ic_xn_resampler_16ic_xn, test_params))
|
||||
(VOLK_INIT_PUPP(volk_gnsssdr_16ic_resamplerxnpuppet2_16ic, volk_gnsssdr_16ic_xn_resampler2_16ic_xn, test_params))
|
||||
(VOLK_INIT_PUPP(volk_gnsssdr_32fc_resamplerxnpuppet_32fc, volk_gnsssdr_32fc_xn_resampler_32fc_xn, test_params))
|
||||
(VOLK_INIT_PUPP(volk_gnsssdr_16ic_x2_dotprodxnpuppet_16ic, volk_gnsssdr_16ic_x2_dot_prod_16ic_xn, test_params))
|
||||
(VOLK_INIT_PUPP(volk_gnsssdr_16ic_x2_rotator_dotprodxnpuppet_16ic, volk_gnsssdr_16ic_x2_rotator_dot_prod_16ic_xn, test_params_int16))
|
||||
|
||||
Reference in New Issue
Block a user