/* * 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 "fftime.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 }