| 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 */ |