1/* 2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved. 3 * 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. 9 */ 10 11 12#ifndef VPX_PORTS_VPX_TIMER_H_ 13#define VPX_PORTS_VPX_TIMER_H_ 14#include "vpx/vpx_integer.h" 15 16#if CONFIG_OS_SUPPORT 17 18#if defined(_WIN32) 19/* 20 * Win32 specific includes 21 */ 22#ifndef WIN32_LEAN_AND_MEAN 23#define WIN32_LEAN_AND_MEAN 24#endif 25#include <windows.h> 26#else 27/* 28 * POSIX specific includes 29 */ 30#include <sys/time.h> 31 32/* timersub is not provided by msys at this time. */ 33#ifndef timersub 34#define timersub(a, b, result) \ 35 do { \ 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) { \ 39 --(result)->tv_sec; \ 40 (result)->tv_usec += 1000000; \ 41 } \ 42 } while (0) 43#endif 44#endif 45 46 47struct vpx_usec_timer { 48#if defined(_WIN32) 49 LARGE_INTEGER begin, end; 50#else 51 struct timeval begin, end; 52#endif 53}; 54 55 56static void 57vpx_usec_timer_start(struct vpx_usec_timer *t) { 58#if defined(_WIN32) 59 QueryPerformanceCounter(&t->begin); 60#else 61 gettimeofday(&t->begin, NULL); 62#endif 63} 64 65 66static void 67vpx_usec_timer_mark(struct vpx_usec_timer *t) { 68#if defined(_WIN32) 69 QueryPerformanceCounter(&t->end); 70#else 71 gettimeofday(&t->end, NULL); 72#endif 73} 74 75 76static int64_t 77vpx_usec_timer_elapsed(struct vpx_usec_timer *t) { 78#if defined(_WIN32) 79 LARGE_INTEGER freq, diff; 80 81 diff.QuadPart = t->end.QuadPart - t->begin.QuadPart; 82 83 QueryPerformanceFrequency(&freq); 84 return diff.QuadPart * 1000000 / freq.QuadPart; 85#else 86 struct timeval diff; 87 88 timersub(&t->end, &t->begin, &diff); 89 return diff.tv_sec * 1000000 + diff.tv_usec; 90#endif 91} 92 93#else /* CONFIG_OS_SUPPORT = 0*/ 94 95/* Empty timer functions if CONFIG_OS_SUPPORT = 0 */ 96#ifndef timersub 97#define timersub(a, b, result) 98#endif 99 100struct vpx_usec_timer { 101 void *dummy; 102}; 103 104static void 105vpx_usec_timer_start(struct vpx_usec_timer *t) { } 106 107static void 108vpx_usec_timer_mark(struct vpx_usec_timer *t) { } 109 110static long 111vpx_usec_timer_elapsed(struct vpx_usec_timer *t) { 112 return 0; 113} 114 115#endif /* CONFIG_OS_SUPPORT */ 116 117#endif // VPX_PORTS_VPX_TIMER_H_ 118