mirror of https://github.com/pvnis/srsRAN_4G.git
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
119 lines
2.9 KiB
C
119 lines
2.9 KiB
C
/**
|
|
*
|
|
* \section COPYRIGHT
|
|
*
|
|
* Copyright 2013-2015 Software Radio Systems Limited
|
|
*
|
|
* \section LICENSE
|
|
*
|
|
* This file is part of the srsLTE library.
|
|
*
|
|
* srsLTE is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as
|
|
* published by the Free Software Foundation, either version 3 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* srsLTE 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 Affero General Public License for more details.
|
|
*
|
|
* A copy of the GNU Affero General Public License can be found in
|
|
* the LICENSE file in the top-level directory of this distribution
|
|
* and at http://www.gnu.org/licenses/.
|
|
*
|
|
*/
|
|
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <strings.h>
|
|
|
|
#include "srslte/io/filesource.h"
|
|
|
|
int srslte_filesource_init(srslte_filesource_t *q, char *filename, srslte_datatype_t type) {
|
|
bzero(q, sizeof(srslte_filesource_t));
|
|
q->f = fopen(filename, "r");
|
|
if (!q->f) {
|
|
perror("fopen");
|
|
return -1;
|
|
}
|
|
q->type = type;
|
|
return 0;
|
|
}
|
|
|
|
void srslte_filesource_free(srslte_filesource_t *q) {
|
|
if (q->f) {
|
|
fclose(q->f);
|
|
}
|
|
bzero(q, sizeof(srslte_filesource_t));
|
|
}
|
|
|
|
void srslte_filesource_seek(srslte_filesource_t *q, int pos) {
|
|
fseek(q->f, pos, SEEK_SET);
|
|
}
|
|
|
|
int read_complex_f(FILE *f, _Complex float *y) {
|
|
char in_str[64];
|
|
_Complex float x;
|
|
if (NULL == fgets(in_str, 64, f)) {
|
|
return -1;
|
|
} else {
|
|
if (index(in_str, 'i') || index(in_str, 'j')) {
|
|
sscanf(in_str,"%f%fi",&(__real__ x),&(__imag__ x));
|
|
} else {
|
|
__imag__ x = 0;
|
|
sscanf(in_str,"%f",&(__real__ x));
|
|
}
|
|
*y = x;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
int srslte_filesource_read(srslte_filesource_t *q, void *buffer, int nsamples) {
|
|
int i;
|
|
float *fbuf = (float*) buffer;
|
|
_Complex float *cbuf = (_Complex float*) buffer;
|
|
_Complex short *sbuf = (_Complex short*) buffer;
|
|
int size;
|
|
|
|
switch(q->type) {
|
|
case SRSLTE_FLOAT:
|
|
for (i=0;i<nsamples;i++) {
|
|
if (EOF == fscanf(q->f,"%g\n",&fbuf[i]))
|
|
break;
|
|
}
|
|
break;
|
|
case SRSLTE_COMPLEX_FLOAT:
|
|
for (i=0;i<nsamples;i++) {
|
|
if (read_complex_f(q->f, &cbuf[i])) {
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
case SRSLTE_COMPLEX_SHORT:
|
|
for (i=0;i<nsamples;i++) {
|
|
if (EOF == fscanf(q->f,"%hd%hdi\n",&(__real__ sbuf[i]),&(__imag__ sbuf[i])))
|
|
break;
|
|
}
|
|
break;
|
|
case SRSLTE_FLOAT_BIN:
|
|
case SRSLTE_COMPLEX_FLOAT_BIN:
|
|
case SRSLTE_COMPLEX_SHORT_BIN:
|
|
if (q->type == SRSLTE_FLOAT_BIN) {
|
|
size = sizeof(float);
|
|
} else if (q->type == SRSLTE_COMPLEX_FLOAT_BIN) {
|
|
size = sizeof(_Complex float);
|
|
} else if (q->type == SRSLTE_COMPLEX_SHORT_BIN) {
|
|
size = sizeof(_Complex short);
|
|
}
|
|
return fread(buffer, size, nsamples, q->f);
|
|
break;
|
|
default:
|
|
i = -1;
|
|
break;
|
|
}
|
|
return i;
|
|
}
|
|
|