blob: dc169b064a0d7d4659809da42e0a6942449fba39
1 | /* |
2 | * Copyright (c) 2000-2003 Fabrice Bellard |
3 | * |
4 | * This file is part of FFmpeg. |
5 | * |
6 | * FFmpeg is free software; you can redistribute it and/or |
7 | * modify it under the terms of the GNU Lesser General Public |
8 | * License as published by the Free Software Foundation; either |
9 | * version 2.1 of the License, or (at your option) any later version. |
10 | * |
11 | * FFmpeg is distributed in the hope that it will be useful, |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
14 | * Lesser General Public License for more details. |
15 | * |
16 | * You should have received a copy of the GNU Lesser General Public |
17 | * License along with FFmpeg; if not, write to the Free Software |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
19 | */ |
20 | |
21 | #ifndef AVUTIL_TIME_H |
22 | #define AVUTIL_TIME_H |
23 | |
24 | #include <stdint.h> |
25 | |
26 | /** |
27 | * Get the current time in microseconds. |
28 | */ |
29 | int64_t av_gettime(void); |
30 | |
31 | /** |
32 | * Get the current time in microseconds since some unspecified starting point. |
33 | * On platforms that support it, the time comes from a monotonic clock |
34 | * This property makes this time source ideal for measuring relative time. |
35 | * The returned values may not be monotonic on platforms where a monotonic |
36 | * clock is not available. |
37 | */ |
38 | int64_t av_gettime_relative(void); |
39 | |
40 | /** |
41 | * Indicates with a boolean result if the av_gettime_relative() time source |
42 | * is monotonic. |
43 | */ |
44 | int av_gettime_relative_is_monotonic(void); |
45 | |
46 | /** |
47 | * Sleep for a period of time. Although the duration is expressed in |
48 | * microseconds, the actual delay may be rounded to the precision of the |
49 | * system timer. |
50 | * |
51 | * @param usec Number of microseconds to sleep. |
52 | * @return zero on success or (negative) error code. |
53 | */ |
54 | int av_usleep(unsigned usec); |
55 | |
56 | #endif /* AVUTIL_TIME_H */ |
57 |