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109 lines
2.9 KiB
C
109 lines
2.9 KiB
C
/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2015 Software Radio Systems Limited
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*
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* \section LICENSE
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*
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* This file is part of the srsLTE library.
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*
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* srsLTE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsLTE 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 Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#include <stdbool.h>
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#include <string.h>
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#include "prb_dl.h"
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#include "srslte/common/phy_common.h"
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//#define DEBUG_IDX
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#ifdef DEBUG_IDX
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extern cf_t *offset_original;
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SRSLTE_API int indices[100000];
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SRSLTE_API int indices_ptr=0;
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#endif
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void print_indexes(cf_t *offset, int len) {
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#ifdef DEBUG_IDX
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for (int i=0;i<len;i++) {
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indices[(i+indices_ptr)%100000]=offset-offset_original+i;
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}
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indices_ptr+=len;
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#endif
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}
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void prb_cp_ref(cf_t **input, cf_t **output, int offset, int nof_refs,
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int nof_intervals, bool advance_output) {
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int i;
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int ref_interval = ((SRSLTE_NRE / nof_refs) - 1);
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memcpy(*output, *input, offset * sizeof(cf_t));
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print_indexes(*input, offset);
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*input += offset;
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*output += offset;
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for (i = 0; i < nof_intervals - 1; i++) {
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if (advance_output) {
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(*output)++;
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} else {
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(*input)++;
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}
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memcpy(*output, *input, ref_interval * sizeof(cf_t));
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print_indexes(*input, ref_interval);
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*output += ref_interval;
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*input += ref_interval;
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}
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if (ref_interval - offset > 0) {
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if (advance_output) {
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(*output)++;
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} else {
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(*input)++;
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}
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memcpy(*output, *input, (ref_interval - offset) * sizeof(cf_t));
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print_indexes(*input, ref_interval-offset);
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*output += (ref_interval - offset);
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*input += (ref_interval - offset);
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}
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}
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void prb_cp(cf_t **input, cf_t **output, int nof_prb) {
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memcpy(*output, *input, sizeof(cf_t) * SRSLTE_NRE * nof_prb);
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print_indexes(*input, SRSLTE_NRE);
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*input += nof_prb * SRSLTE_NRE;
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*output += nof_prb * SRSLTE_NRE;
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}
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void prb_cp_half(cf_t **input, cf_t **output, int nof_prb) {
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memcpy(*output, *input, sizeof(cf_t) * SRSLTE_NRE * nof_prb / 2);
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print_indexes(*input, SRSLTE_NRE/2);
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*input += nof_prb * SRSLTE_NRE / 2;
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*output += nof_prb * SRSLTE_NRE / 2;
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}
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void prb_put_ref_(cf_t **input, cf_t **output, int offset, int nof_refs,
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int nof_intervals) {
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prb_cp_ref(input, output, offset, nof_refs, nof_intervals, false);
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}
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void prb_get_ref_(cf_t **input, cf_t **output, int offset, int nof_refs,
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int nof_intervals) {
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prb_cp_ref(input, output, offset, nof_refs, nof_intervals, true);
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}
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