2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
14 #include "vpx/vpx_integer.h"
20 * Win32 specific includes
22 #ifndef WIN32_LEAN_AND_MEAN
23 #define WIN32_LEAN_AND_MEAN
28 * POSIX specific includes
32 /* timersub is not provided by msys at this time. */
34 #define timersub(a, b, result) \
36 (result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \
37 (result)->tv_usec = (a)->tv_usec - (b)->tv_usec; \
38 if ((result)->tv_usec < 0) { \
40 (result)->tv_usec += 1000000; \
50 LARGE_INTEGER begin, end;
52 struct timeval begin, end;
58 vpx_usec_timer_start(struct vpx_usec_timer *t)
61 QueryPerformanceCounter(&t->begin);
63 gettimeofday(&t->begin, NULL);
69 vpx_usec_timer_mark(struct vpx_usec_timer *t)
72 QueryPerformanceCounter(&t->end);
74 gettimeofday(&t->end, NULL);
80 vpx_usec_timer_elapsed(struct vpx_usec_timer *t)
83 LARGE_INTEGER freq, diff;
85 diff.QuadPart = t->end.QuadPart - t->begin.QuadPart;
87 QueryPerformanceFrequency(&freq);
88 return diff.QuadPart * 1000000 / freq.QuadPart;
92 timersub(&t->end, &t->begin, &diff);
93 return diff.tv_sec * 1000000 + diff.tv_usec;
97 #else /* CONFIG_OS_SUPPORT = 0*/
99 /* Empty timer functions if CONFIG_OS_SUPPORT = 0 */
101 #define timersub(a, b, result)
104 struct vpx_usec_timer
110 vpx_usec_timer_start(struct vpx_usec_timer *t) { }
113 vpx_usec_timer_mark(struct vpx_usec_timer *t) { }
116 vpx_usec_timer_elapsed(struct vpx_usec_timer *t) { return 0; }
118 #endif /* CONFIG_OS_SUPPORT */