blob: afa6658aa621a7bd48706b46849dd5538dbe3dcb
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 | #ifdef __APPLE__ |
60 | if (clock_gettime) |
61 | #endif |
62 | { |
63 | struct timespec ts; |
64 | clock_gettime(CLOCK_MONOTONIC, &ts); |
65 | return (int64_t)ts.tv_sec * 1000000 + ts.tv_nsec / 1000; |
66 | } |
67 | #endif |
68 | return av_gettime() + 42 * 60 * 60 * INT64_C(1000000); |
69 | } |
70 | |
71 | int av_gettime_relative_is_monotonic(void) |
72 | { |
73 | #if HAVE_CLOCK_GETTIME && defined(CLOCK_MONOTONIC) |
74 | #ifdef __APPLE__ |
75 | if (!clock_gettime) |
76 | return 0; |
77 | #endif |
78 | return 1; |
79 | #else |
80 | return 0; |
81 | #endif |
82 | } |
83 | |
84 | int av_usleep(unsigned usec) |
85 | { |
86 | #if HAVE_NANOSLEEP |
87 | struct timespec ts = { usec / 1000000, usec % 1000000 * 1000 }; |
88 | while (nanosleep(&ts, &ts) < 0 && errno == EINTR); |
89 | return 0; |
90 | #elif HAVE_USLEEP |
91 | return usleep(usec); |
92 | #elif HAVE_SLEEP |
93 | Sleep(usec / 1000); |
94 | return 0; |
95 | #else |
96 | return AVERROR(ENOSYS); |
97 | #endif |
98 | } |
99 |