yading@11: /*
yading@11:  * Copyright (c) 2000-2003 Fabrice Bellard
yading@11:  *
yading@11:  * This file is part of FFmpeg.
yading@11:  *
yading@11:  * FFmpeg is free software; you can redistribute it and/or
yading@11:  * modify it under the terms of the GNU Lesser General Public
yading@11:  * License as published by the Free Software Foundation; either
yading@11:  * version 2.1 of the License, or (at your option) any later version.
yading@11:  *
yading@11:  * FFmpeg is distributed in the hope that it will be useful,
yading@11:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@11:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@11:  * Lesser General Public License for more details.
yading@11:  *
yading@11:  * You should have received a copy of the GNU Lesser General Public
yading@11:  * License along with FFmpeg; if not, write to the Free Software
yading@11:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@11:  */
yading@11: 
yading@11: #include "config.h"
yading@11: 
yading@11: #include <stddef.h>
yading@11: #include <stdint.h>
yading@11: #include <time.h>
yading@11: #if HAVE_GETTIMEOFDAY
yading@11: #include <sys/time.h>
yading@11: #endif
yading@11: #if HAVE_UNISTD_H
yading@11: #include <unistd.h>
yading@11: #endif
yading@11: #if HAVE_WINDOWS_H
yading@11: #include <windows.h>
yading@11: #endif
yading@11: 
yading@11: #include "libavutil/time.h"
yading@11: #include "error.h"
yading@11: 
yading@11: int64_t av_gettime(void)
yading@11: {
yading@11: #if HAVE_GETTIMEOFDAY
yading@11:     struct timeval tv;
yading@11:     gettimeofday(&tv, NULL);
yading@11:     return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
yading@11: #elif HAVE_GETSYSTEMTIMEASFILETIME
yading@11:     FILETIME ft;
yading@11:     int64_t t;
yading@11:     GetSystemTimeAsFileTime(&ft);
yading@11:     t = (int64_t)ft.dwHighDateTime << 32 | ft.dwLowDateTime;
yading@11:     return t / 10 - 11644473600000000; /* Jan 1, 1601 */
yading@11: #else
yading@11:     return -1;
yading@11: #endif
yading@11: }
yading@11: 
yading@11: int av_usleep(unsigned usec)
yading@11: {
yading@11: #if HAVE_NANOSLEEP
yading@11:     struct timespec ts = { usec / 1000000, usec % 1000000 * 1000 };
yading@11:     while (nanosleep(&ts, &ts) < 0 && errno == EINTR);
yading@11:     return 0;
yading@11: #elif HAVE_USLEEP
yading@11:     return usleep(usec);
yading@11: #elif HAVE_SLEEP
yading@11:     Sleep(usec / 1000);
yading@11:     return 0;
yading@11: #else
yading@11:     return AVERROR(ENOSYS);
yading@11: #endif
yading@11: }