mirror of https://github.com/PentHertz/srsLTE.git
104 lines
2.9 KiB
C
104 lines
2.9 KiB
C
/**
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* Copyright 2013-2022 Software Radio Systems Limited
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*
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* This file is part of srsRAN.
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*
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* srsRAN 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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* srsRAN 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 "srsran/phy/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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SRSRAN_API int indices[100000];
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SRSRAN_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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{
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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, int nof_intervals, bool advance_output)
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{
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int i;
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int ref_interval = ((SRSRAN_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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{
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memcpy(*output, *input, sizeof(cf_t) * SRSRAN_NRE * nof_prb);
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print_indexes(*input, SRSRAN_NRE);
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*input += nof_prb * SRSRAN_NRE;
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*output += nof_prb * SRSRAN_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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{
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memcpy(*output, *input, sizeof(cf_t) * SRSRAN_NRE * nof_prb / 2);
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print_indexes(*input, SRSRAN_NRE / 2);
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*input += nof_prb * SRSRAN_NRE / 2;
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*output += nof_prb * SRSRAN_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, int nof_intervals)
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{
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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, int nof_intervals)
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{
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prb_cp_ref(input, output, offset, nof_refs, nof_intervals, true);
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}
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