mirror of
https://github.com/outbackdingo/UltraGrid.git
synced 2026-03-20 22:40:18 +00:00
c132fcc9fe
The replacement was recently (since 6dfd098d) used even despite the
built-in has been implemented. The replacement was there because it
has supposedly better precision than the built-in. But since it is
no longer true (if it ever was), it is removed.
Note: there is also timespec_get (or UG wrapper get_time_in_ns) that can
be used in recent code instead of POSIX gettimeofday.
38 lines
863 B
C
38 lines
863 B
C
/*
|
|
* FILE: ntp.h
|
|
* AUTHOR: O.Hodson
|
|
*
|
|
* NTP utility functions to make rtp and rtp round time calculation
|
|
* a little less painful.
|
|
*
|
|
* Copyright (c) 2000 University College London
|
|
* All rights reserved.
|
|
*
|
|
* $Revision: 1.1 $
|
|
* $Date: 2007/11/08 09:48:59 $
|
|
*
|
|
*/
|
|
|
|
#include "config.h"
|
|
#include "config_unix.h"
|
|
#include "config_win32.h"
|
|
|
|
#include <sys/time.h>
|
|
|
|
#include "ntp.h"
|
|
|
|
#define SECS_BETWEEN_1900_1970 2208988800u
|
|
|
|
void ntp64_time(uint32_t * ntp_sec, uint32_t * ntp_frac)
|
|
{
|
|
struct timeval now;
|
|
uint32_t tmp; /* now.tv_usec is signed on many platforms; compensate */
|
|
|
|
gettimeofday(&now, NULL);
|
|
|
|
/* NB ntp_frac is in units of 1 / (2^32 - 1) secs. */
|
|
*ntp_sec = now.tv_sec + SECS_BETWEEN_1900_1970;
|
|
tmp = now.tv_usec;
|
|
*ntp_frac = (tmp << 12) + (tmp << 8) - ((tmp * 3650) >> 6);
|
|
}
|