mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
d67c6c7f6f
When targeting a recent enough macOS/iOS version that has clock_gettime it won't be a weak symbol, in which case clang warns for this check as it's always true: warning: address of function 'clock_gettime' will always evaluate to 'true' This warning is silenced by using the address-of operator to make the intent explicit.
99 lines
2.3 KiB
C
99 lines
2.3 KiB
C
/*
|
|
* Copyright (c) 2000-2003 Fabrice Bellard
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg 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.
|
|
*
|
|
* FFmpeg 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 FFmpeg; 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>
|
|
#include <time.h>
|
|
#if HAVE_GETTIMEOFDAY
|
|
#include <sys/time.h>
|
|
#endif
|
|
#if HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
#if HAVE_WINDOWS_H
|
|
#include <windows.h>
|
|
#endif
|
|
|
|
#include "time.h"
|
|
#include "error.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
|
|
}
|
|
|
|
int64_t av_gettime_relative(void)
|
|
{
|
|
#if HAVE_CLOCK_GETTIME && defined(CLOCK_MONOTONIC)
|
|
#ifdef __APPLE__
|
|
if (&clock_gettime)
|
|
#endif
|
|
{
|
|
struct timespec ts;
|
|
clock_gettime(CLOCK_MONOTONIC, &ts);
|
|
return (int64_t)ts.tv_sec * 1000000 + ts.tv_nsec / 1000;
|
|
}
|
|
#endif
|
|
return av_gettime() + 42 * 60 * 60 * INT64_C(1000000);
|
|
}
|
|
|
|
int av_gettime_relative_is_monotonic(void)
|
|
{
|
|
#if HAVE_CLOCK_GETTIME && defined(CLOCK_MONOTONIC)
|
|
#ifdef __APPLE__
|
|
if (!&clock_gettime)
|
|
return 0;
|
|
#endif
|
|
return 1;
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
int av_usleep(unsigned usec)
|
|
{
|
|
#if HAVE_NANOSLEEP
|
|
struct timespec ts = { usec / 1000000, usec % 1000000 * 1000 };
|
|
while (nanosleep(&ts, &ts) < 0 && errno == EINTR);
|
|
return 0;
|
|
#elif HAVE_USLEEP
|
|
return usleep(usec);
|
|
#elif HAVE_SLEEP
|
|
Sleep(usec / 1000);
|
|
return 0;
|
|
#else
|
|
return AVERROR(ENOSYS);
|
|
#endif
|
|
}
|