13754d53c3
- Now they are in ndkHelper:: name space - Changed module name to ndk_helper - Changed some static members to class var or stand alone function - Added syncronization for JNIHelper.cpp - For a documentation, I will work with doc writer for future improvement Change-Id: I0055061a4f53b1904cde2e0339550ee277b35fc5 Addressed most of feedbacks, - Switched coding standard to Chrome style - Update JNI helper, and documented - Fixed other issues that is pointed out Change-Id: Icc729a55ed8dd613759f34a3fc35cb4949d2d205
73 lines
1.8 KiB
C++
73 lines
1.8 KiB
C++
/*
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* Copyright 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "perfMonitor.h"
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namespace ndk_helper
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{
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PerfMonitor::PerfMonitor() :
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last_tick_( 0.f ),
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tv_last_sec_( 0 ),
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tickindex_( 0 ),
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ticksum_( 0 )
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{
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for( int32_t i = 0; i < NUM_SAMPLES; ++i )
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ticklist_[i] = 0;
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}
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PerfMonitor::~PerfMonitor()
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{
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}
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double PerfMonitor::UpdateTick( double currentTick )
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{
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ticksum_ -= ticklist_[tickindex_];
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ticksum_ += currentTick;
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ticklist_[tickindex_] = currentTick;
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tickindex_ = (tickindex_ + 1) % NUM_SAMPLES;
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return ((double) ticksum_ / NUM_SAMPLES);
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}
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bool PerfMonitor::Update( float &fFPS )
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{
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struct timeval Time;
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gettimeofday( &Time, NULL );
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double time = Time.tv_sec + Time.tv_usec * 1.0 / 1000000.0;
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double tick = time - last_tick_;
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double d = UpdateTick( tick );
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last_tick_ = time;
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if( Time.tv_sec - tv_last_sec_ >= 1 )
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{
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double time = Time.tv_sec + Time.tv_usec * 1.0 / 1000000.0;
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current_FPS_ = 1.f / d;
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tv_last_sec_ = Time.tv_sec;
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fFPS = current_FPS_;
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return true;
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}
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else
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{
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fFPS = current_FPS_;
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return false;
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}
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}
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} //namespace ndkHelper
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