diff options
Diffstat (limited to 'LibOVR/Src/Kernel/OVR_Timer.cpp')
| -rw-r--r-- | LibOVR/Src/Kernel/OVR_Timer.cpp | 83 |
1 files changed, 76 insertions, 7 deletions
diff --git a/LibOVR/Src/Kernel/OVR_Timer.cpp b/LibOVR/Src/Kernel/OVR_Timer.cpp index 682d621..84ff4a1 100644 --- a/LibOVR/Src/Kernel/OVR_Timer.cpp +++ b/LibOVR/Src/Kernel/OVR_Timer.cpp @@ -5,18 +5,33 @@ Content : Provides static functions for precise timing Created : September 19, 2012 Notes : -Copyright : Copyright 2012 Oculus VR, Inc. All Rights reserved. +Copyright : Copyright 2013 Oculus VR, Inc. All Rights reserved. -Use of this software is subject to the terms of the Oculus license -agreement provided at the time of installation or download, or which +Licensed under the Oculus VR SDK License Version 2.0 (the "License"); +you may not use the Oculus VR SDK except in compliance with the License, +which is provided at the time of installation or download, or which otherwise accompanies this software in either electronic or hard copy form. +You may obtain a copy of the License at + +http://www.oculusvr.com/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, the Oculus VR SDK +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. + ************************************************************************************/ #include "OVR_Timer.h" +#include "OVR_Log.h" #if defined (OVR_OS_WIN32) #include <windows.h> +#elif defined(OVR_OS_ANDROID) +#include <time.h> +#include <android/log.h> #else #include <sys/time.h> @@ -24,8 +39,15 @@ otherwise accompanies this software in either electronic or hard copy form. namespace OVR { -//----------------------------------------------------------------------------------- -// ***** Timer Class + +//------------------------------------------------------------------------ +// *** Timer - Platform Independent functions + +double ovr_GetTimeInSeconds() +{ + return Timer::GetSeconds(); +} + UInt64 Timer::GetProfileTicks() { @@ -37,11 +59,53 @@ double Timer::GetProfileSeconds() return TicksToSeconds(GetProfileTicks()-StartTime); } +#ifndef OVR_OS_ANDROID + +double Timer::GetSeconds() +{ + return (double)Timer::GetRawTicks() / (double) GetRawFrequency(); +} +#endif + + +//------------------------------------------------------------------------ +// *** Android Specific Timer + + +#if defined(OVR_OS_ANDROID) + +// Returns global high-resolution application timer in seconds. +double Timer::GetSeconds() +{ + return double(Timer::GetRawTicks()) * 0.000000001; +} + +UInt64 Timer::GetRawTicks() +{ + // Choreographer vsync timestamp is based on. + struct timespec tp; + const int status = clock_gettime(CLOCK_MONOTONIC, &tp); + + if (status != 0) + { + OVR_DEBUG_LOG(("clock_gettime status=%i", status )); + } + const UInt64 result = (UInt64)tp.tv_sec * (UInt64)(1000 * 1000 * 1000) + UInt64(tp.tv_nsec); + return result; +} + +UInt64 Timer::GetRawFrequency() +{ + return MksPerSecond * 1000; +} + +#endif + //------------------------------------------------------------------------ // *** Win32 Specific Timer -#if (defined (OVR_OS_WIN32)) +#if defined (OVR_OS_WIN32) CRITICAL_SECTION WinAPI_GetTimeCS; volatile UInt32 WinAPI_OldTime = 0; @@ -127,13 +191,16 @@ void Timer::shutdownTimerSystem() { } + +#if !defined(OVR_OS_ANDROID) + UInt64 Timer::GetRawTicks() { // TODO: prefer rdtsc when available? + UInt64 result; // Return microseconds. struct timeval tv; - UInt64 result; gettimeofday(&tv, 0); @@ -148,6 +215,8 @@ UInt64 Timer::GetRawFrequency() return MksPerSecond; } +#endif // !OVR_OS_ANDROID + #endif // !OVR_OS_WIN32 |