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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 | #include "config.h" | |
22 | ||
23 | #include <stddef.h> | |
24 | #include <stdint.h> | |
25 | #include <time.h> | |
26 | #if HAVE_GETTIMEOFDAY | |
27 | #include <sys/time.h> | |
28 | #endif | |
29 | #if HAVE_UNISTD_H | |
30 | #include <unistd.h> | |
31 | #endif | |
32 | #if HAVE_WINDOWS_H | |
33 | #include <windows.h> | |
34 | #endif | |
35 | ||
36 | #include "time.h" | |
37 | #include "error.h" | |
38 | ||
39 | int64_t av_gettime(void) | |
40 | { | |
41 | #if HAVE_GETTIMEOFDAY | |
42 | struct timeval tv; | |
43 | gettimeofday(&tv, NULL); | |
44 | return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec; | |
45 | #elif HAVE_GETSYSTEMTIMEASFILETIME | |
46 | FILETIME ft; | |
47 | int64_t t; | |
48 | GetSystemTimeAsFileTime(&ft); | |
49 | t = (int64_t)ft.dwHighDateTime << 32 | ft.dwLowDateTime; | |
50 | return t / 10 - 11644473600000000; /* Jan 1, 1601 */ | |
51 | #else | |
52 | return -1; | |
53 | #endif | |
54 | } | |
55 | ||
56 | int64_t av_gettime_relative(void) | |
57 | { | |
58 | #if HAVE_CLOCK_GETTIME && defined(CLOCK_MONOTONIC) | |
59 | struct timespec ts; | |
60 | clock_gettime(CLOCK_MONOTONIC, &ts); | |
61 | return (int64_t)ts.tv_sec * 1000000 + ts.tv_nsec / 1000; | |
62 | #else | |
f6fa7814 | 63 | return av_gettime() + 42 * 60 * 60 * INT64_C(1000000); |
2ba45a60 DM |
64 | #endif |
65 | } | |
66 | ||
67 | int av_gettime_relative_is_monotonic(void) | |
68 | { | |
69 | #if HAVE_CLOCK_GETTIME && defined(CLOCK_MONOTONIC) | |
70 | return 1; | |
71 | #else | |
72 | return 0; | |
73 | #endif | |
74 | } | |
75 | ||
76 | int av_usleep(unsigned usec) | |
77 | { | |
78 | #if HAVE_NANOSLEEP | |
79 | struct timespec ts = { usec / 1000000, usec % 1000000 * 1000 }; | |
80 | while (nanosleep(&ts, &ts) < 0 && errno == EINTR); | |
81 | return 0; | |
82 | #elif HAVE_USLEEP | |
83 | return usleep(usec); | |
84 | #elif HAVE_SLEEP | |
85 | Sleep(usec / 1000); | |
86 | return 0; | |
87 | #else | |
88 | return AVERROR(ENOSYS); | |
89 | #endif | |
90 | } |