1 /*
2 * Copyright (c) 2016, Alliance for Open Media. All rights reserved
3 *
4 * This source code is subject to the terms of the BSD 2 Clause License and
5 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
6 * was not distributed with this source code in the LICENSE file, you can
7 * obtain it at www.aomedia.org/license/software. If the Alliance for Open
8 * Media Patent License 1.0 was not distributed with this source code in the
9 * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
10 */
11
12 #ifndef AOM_AOM_PORTS_AOM_TIMER_H_
13 #define AOM_AOM_PORTS_AOM_TIMER_H_
14
15 #include "config/aom_config.h"
16
17 #include "aom/aom_integer.h"
18
19 #if CONFIG_OS_SUPPORT
20
21 #if defined(_WIN32)
22 /*
23 * Win32 specific includes
24 */
25 #ifndef WIN32_LEAN_AND_MEAN
26 #define WIN32_LEAN_AND_MEAN
27 #endif
28 #include <windows.h>
29 #else
30 /*
31 * POSIX specific includes
32 */
33 #include <sys/time.h>
34
35 /* timersub is not provided by msys at this time. */
36 #ifndef timersub
37 #define timersub(a, b, result) \
38 do { \
39 (result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \
40 (result)->tv_usec = (a)->tv_usec - (b)->tv_usec; \
41 if ((result)->tv_usec < 0) { \
42 --(result)->tv_sec; \
43 (result)->tv_usec += 1000000; \
44 } \
45 } while (0)
46 #endif
47 #endif
48
49 struct aom_usec_timer {
50 #if defined(_WIN32)
51 LARGE_INTEGER begin, end;
52 #else
53 struct timeval begin, end;
54 #endif
55 };
56
aom_usec_timer_start(struct aom_usec_timer * t)57 static INLINE void aom_usec_timer_start(struct aom_usec_timer *t) {
58 #if defined(_WIN32)
59 QueryPerformanceCounter(&t->begin);
60 #else
61 gettimeofday(&t->begin, NULL);
62 #endif
63 }
64
aom_usec_timer_mark(struct aom_usec_timer * t)65 static INLINE void aom_usec_timer_mark(struct aom_usec_timer *t) {
66 #if defined(_WIN32)
67 QueryPerformanceCounter(&t->end);
68 #else
69 gettimeofday(&t->end, NULL);
70 #endif
71 }
72
aom_usec_timer_elapsed(struct aom_usec_timer * t)73 static INLINE int64_t aom_usec_timer_elapsed(struct aom_usec_timer *t) {
74 #if defined(_WIN32)
75 LARGE_INTEGER freq, diff;
76
77 diff.QuadPart = t->end.QuadPart - t->begin.QuadPart;
78
79 QueryPerformanceFrequency(&freq);
80 return diff.QuadPart * 1000000 / freq.QuadPart;
81 #else
82 struct timeval diff;
83
84 timersub(&t->end, &t->begin, &diff);
85 return ((int64_t)diff.tv_sec) * 1000000 + diff.tv_usec;
86 #endif
87 }
88
89 #else /* CONFIG_OS_SUPPORT = 0*/
90
91 /* Empty timer functions if CONFIG_OS_SUPPORT = 0 */
92 #ifndef timersub
93 #define timersub(a, b, result)
94 #endif
95
96 struct aom_usec_timer {
97 void *dummy;
98 };
99
aom_usec_timer_start(struct aom_usec_timer * t)100 static INLINE void aom_usec_timer_start(struct aom_usec_timer *t) { (void)t; }
101
aom_usec_timer_mark(struct aom_usec_timer * t)102 static INLINE void aom_usec_timer_mark(struct aom_usec_timer *t) { (void)t; }
103
aom_usec_timer_elapsed(struct aom_usec_timer * t)104 static INLINE int aom_usec_timer_elapsed(struct aom_usec_timer *t) {
105 (void)t;
106 return 0;
107 }
108
109 #endif /* CONFIG_OS_SUPPORT */
110
111 #endif // AOM_AOM_PORTS_AOM_TIMER_H_
112