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srsLTE
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add uint64 (sample based) time stamp helpers

This commit is contained in:
Andre Puschmann 2019-04-22 11:41:07 +02:00
parent bdfb408857
commit f2266bb264
2 changed files with 49 additions and 2 deletions
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13
lib/include/srslte/phy/common/timestamp.h
View File

@ -37,9 +37,10 @@
#ifndef SRSLTE_TIMESTAMP_H
#define SRSLTE_TIMESTAMP_H
#include <time.h>
#include <stdint.h>
#include "srslte/config.h"
#include <stdbool.h>
#include <stdint.h>
#include <time.h>
typedef struct SRSLTE_API{
time_t full_secs;
@ -50,9 +51,13 @@ SRSLTE_API int srslte_timestamp_init(srslte_timestamp_t *t,
time_t full_secs,
double frac_secs);
SRSLTE_API void srslte_timestamp_init_uint64(srslte_timestamp_t* ts_time, uint64_t ts_count, double base_srate);
SRSLTE_API int srslte_timestamp_copy(srslte_timestamp_t *dest,
srslte_timestamp_t *src);
SRSLTE_API int srslte_timestamp_compare(srslte_timestamp_t* a, srslte_timestamp_t* b);
SRSLTE_API int srslte_timestamp_add(srslte_timestamp_t *t,
time_t full_secs,
double frac_secs);
@ -63,6 +68,10 @@ SRSLTE_API int srslte_timestamp_sub(srslte_timestamp_t *t,
SRSLTE_API double srslte_timestamp_real(srslte_timestamp_t *t);
SRSLTE_API bool srslte_timestamp_iszero(const srslte_timestamp_t* t);
SRSLTE_API uint32_t srslte_timestamp_uint32(srslte_timestamp_t *t);
SRSLTE_API uint64_t srslte_timestamp_uint64(const srslte_timestamp_t* t, double srate);
#endif // SRSLTE_TIMESTAMP_H

38
lib/src/phy/common/timestamp.c
View File

@ -37,6 +37,17 @@ int srslte_timestamp_init(srslte_timestamp_t *t, time_t full_secs, double frac_s
return ret;
}
void srslte_timestamp_init_uint64(srslte_timestamp_t* ts_time, uint64_t ts_count, double base_srate)
{
uint64_t seconds = ts_count / (uint64_t)base_srate;
uint64_t frac_samples = (uint64_t)(seconds * (uint64_t)base_srate);
double frac_seconds = (double)(ts_count - frac_samples) / base_srate;
if (ts_time) {
srslte_timestamp_init(ts_time, seconds, frac_seconds);
}
}
int srslte_timestamp_copy(srslte_timestamp_t *dest, srslte_timestamp_t *src){
int ret = SRSLTE_ERROR;
if(dest != NULL && src != NULL){
@ -47,6 +58,23 @@ int srslte_timestamp_copy(srslte_timestamp_t *dest, srslte_timestamp_t *src){
return ret;
}
int srslte_timestamp_compare(srslte_timestamp_t* a, srslte_timestamp_t* b)
{
int ret = 0;
if (a->full_secs > b->full_secs) {
ret = +1;
} else if (a->full_secs < b->full_secs) {
ret = -1;
} else if (a->frac_secs > b->frac_secs) {
ret = +1;
} else if (a->frac_secs < b->frac_secs) {
ret = -1;
}
return ret;
}
int srslte_timestamp_add(srslte_timestamp_t *t, time_t full_secs, double frac_secs){
int ret = SRSLTE_ERROR;
if(t != NULL && frac_secs >= 0.0){
@ -80,7 +108,17 @@ double srslte_timestamp_real(srslte_timestamp_t *t){
return t->frac_secs + t->full_secs;
}
bool srslte_timestamp_iszero(const srslte_timestamp_t* t)
{
return ((t->full_secs == 0) && (t->frac_secs == 0));
}
uint32_t srslte_timestamp_uint32(srslte_timestamp_t *t){
uint32_t x = t->full_secs*1e6 + (uint32_t) (t->frac_secs*1e6);
return x;
}
uint64_t srslte_timestamp_uint64(const srslte_timestamp_t* t, double srate)
{
return (uint64_t)(t->full_secs * (uint64_t)srate) + (uint64_t)round(t->frac_secs * srate);
}