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/*
* Copyright 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* 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.
*/
#ifndef PERFMONITOR_H_
#define PERFMONITOR_H_
#include <jni.h>
#include <errno.h>
#include <time.h>
#include "JNIHelper.h"
namespace ndk_helper
{
const int32_t NUM_SAMPLES = 100;
/******************************************************************
* Helper class for a performance monitoring and get current tick time
*/
class PerfMonitor
{
private:
float current_FPS_;
time_t tv_last_sec_;
double last_tick_;
int32_t tickindex_;
double ticksum_;
double ticklist_[NUM_SAMPLES];
double UpdateTick( double current_tick );
public:
PerfMonitor();
virtual ~PerfMonitor();
bool Update( float &fFPS );
static double GetCurrentTime()
{
struct timeval time;
gettimeofday( &time, NULL );
double ret = time.tv_sec + time.tv_usec * 1.0 / 1000000.0;
return ret;
}
};
} //namespace ndkHelper
#endif /* PERFMONITOR_H_ */
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