VLC_EXPORT( mtime_t, date_Get, ( const date_t * ) );
VLC_EXPORT( void, date_Move, ( date_t *, mtime_t ) );
VLC_EXPORT( mtime_t, date_Increment, ( date_t *, uint32_t ) );
+VLC_EXPORT( uint64_t, NTPtime64, ( void ) );
* Functions are prototyped in vlc_mtime.h.
*****************************************************************************
* Copyright (C) 1998-2004 the VideoLAN team
+ * Copyright © 2006-2007 Rémi Denis-Courmont
* $Id$
*
* Authors: Vincent Seguin <seguin@via.ecp.fr>
#include <stdio.h> /* sprintf() */
#include <time.h> /* clock_gettime(), clock_nanosleep() */
#include <stdlib.h> /* lldiv() */
+#include <assert.h>
#if defined( PTH_INIT_IN_PTH_H ) /* GNU Pth */
return p_date->date;
}
+
+/**
+ * @return NTP 64-bits timestamp in host byte order.
+ */
+uint64_t NTPtime64 (void)
+{
+ struct timespec ts;
+#if defined (CLOCK_REALTIME)
+ clock_gettime (CLOCK_REALTIME, &ts);
+#else
+ {
+ struct timeval tv;
+ gettimeofday (&tv, NULL);
+ ts.tv_sec = tv.tv_sec;
+ ts.tv_nsec = tv.tv_usec * 1000;
+ }
+#endif
+
+ /* Convert nanoseconds to 32-bits fraction (232 picosecond units) */
+ uint64_t t = (uint64_t)(ts.tv_nsec) << 32;
+ t /= 1000000000;
+
+
+ /* There is 70 years (incl. 17 leap ones) offset to the Unix Epoch.
+ * No leap seconds during that period since they were not invented yet.
+ */
+ assert (t < 0x100000000);
+ t |= ((70LL * 365 + 17) * 24 * 60 * 60 + ts.tv_sec) << 32;
+ return t;
+}
+