hevc: Add names for reserved NAL unit types
[libav.git] / libavutil / time.h
1 /*
2 * This file is part of Libav.
3 *
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.
8 *
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.
13 *
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
17 */
18
19 #ifndef AVUTIL_TIME_H
20 #define AVUTIL_TIME_H
21
22 #include <stdint.h>
23
24 /**
25 * Get the current time in microseconds.
26 */
27 int64_t av_gettime(void);
28
29 /**
30 * Get the current time in microseconds since some unspecified starting point.
31 * On platforms that support it, the time comes from a monotonic clock
32 * This property makes this time source ideal for measuring relative time.
33 * The returned values may not be monotonic on platforms where a monotonic
34 * clock is not available.
35 */
36 int64_t av_gettime_relative(void);
37
38 /**
39 * Sleep for a period of time. Although the duration is expressed in
40 * microseconds, the actual delay may be rounded to the precision of the
41 * system timer.
42 *
43 * @param usec Number of microseconds to sleep.
44 * @return zero on success or (negative) error code.
45 */
46 int av_usleep(unsigned usec);
47
48 #endif /* AVUTIL_TIME_H */