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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 | * If a monotonic clock is not available on the targeted platform, the | |
36 | * implementation fallsback on using av_gettime(). | |
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 */ |