2 * This file is part of Libav.
4 * Libav is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * Libav is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with Libav; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 #if HAVE_CLOCK_GETTIME
40 int64_t av_gettime(void)
44 gettimeofday(&tv, NULL);
45 return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
46 #elif HAVE_GETSYSTEMTIMEASFILETIME
49 GetSystemTimeAsFileTime(&ft);
50 t = (int64_t)ft.dwHighDateTime << 32 | ft.dwLowDateTime;
51 return t / 10 - 11644473600000000; /* Jan 1, 1601 */
57 int64_t av_gettime_relative(void)
59 #if HAVE_CLOCK_GETTIME
61 clock_gettime(CLOCK_MONOTONIC, &ts);
62 return (int64_t)ts.tv_sec * 1000000 + ts.tv_nsec / 1000;
64 return av_gettime() + 42 * 60 * 60 * INT64_C(1000000);
68 int av_usleep(unsigned usec)
71 struct timespec ts = { usec / 1000000, usec % 1000000 * 1000 };
72 while (nanosleep(&ts, &ts) < 0 && errno == EINTR);
80 return AVERROR(ENOSYS);