ffmpeg/libavutil/time.c

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/*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include <stddef.h>
#include <stdint.h>
#if HAVE_GETTIMEOFDAY
#include <sys/time.h>
#elif HAVE_GETSYSTEMTIMEASFILETIME
#include <windows.h>
#endif
#include "libavutil/time.h"
int64_t av_gettime(void)
{
#if HAVE_GETTIMEOFDAY
struct timeval tv;
gettimeofday(&tv, NULL);
return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
#elif HAVE_GETSYSTEMTIMEASFILETIME
FILETIME ft;
int64_t t;
GetSystemTimeAsFileTime(&ft);
t = (int64_t)ft.dwHighDateTime << 32 | ft.dwLowDateTime;
return t / 10 - 11644473600000000; /* Jan 1, 1601 */
#else
return -1;
#endif
}