Older/ToolKit/Util/SpeedStatistic.h
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add ZLMediaKit code for learning.
2024-09-28 23:55:00 +08:00

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/*
* Copyright (c) 2016 The ZLToolKit project authors. All Rights Reserved.
*
* This file is part of ZLToolKit(https://github.com/ZLMediaKit/ZLToolKit).
*
* Use of this source code is governed by MIT license that can be found in the
* LICENSE file in the root of the source tree. All contributing project authors
* may be found in the AUTHORS file in the root of the source tree.
*/
#ifndef SPEED_STATISTIC_H_
#define SPEED_STATISTIC_H_
#include "TimeTicker.h"
namespace toolkit {
class BytesSpeed {
public:
BytesSpeed() = default;
~BytesSpeed() = default;
/**
* 添加统计字节
*/
BytesSpeed &operator+=(size_t bytes) {
_bytes += bytes;
if (_bytes > 1024 * 1024) {
//数据大于1MB就计算一次网速
computeSpeed();
}
return *this;
}
/**
* 获取速度单位bytes/s
*/
int getSpeed() {
if (_ticker.elapsedTime() < 1000) {
//获取频率小于1秒那么返回上次计算结果
return _speed;
}
return computeSpeed();
}
private:
int computeSpeed() {
auto elapsed = _ticker.elapsedTime();
if (!elapsed) {
return _speed;
}
_speed = (int)(_bytes * 1000 / elapsed);
_ticker.resetTime();
_bytes = 0;
return _speed;
}
private:
int _speed = 0;
size_t _bytes = 0;
Ticker _ticker;
};
} /* namespace toolkit */
#endif /* SPEED_STATISTIC_H_ */