timeestimator.h

/*
    This file is part of the KDE Baloo Project
    SPDX-FileCopyrightText: 2015 Pinak Ahuja <[email protected]>
 
    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
*/
 
#ifndef BALOO_TIMEESTIMATOR_H
#define BALOO_TIMEESTIMATOR_H
 
#define BUFFER_SIZE 5
 
#include "fileindexerconfig.h"
#include <QObject>
 
namespace Baloo {
/*
* This class handles the time estimation logic for filecontentindexer.
* Time estimations use a weighted moving average of the time taken by
* 5 most recent batches. The more recent the batch is, higher the weight
* it will be assigned.
*/
 
class TimeEstimator : public QObject
{
    Q_OBJECT
public:
    explicit TimeEstimator(QObject* parent = nullptr);
    uint calculateTimeLeft(int filesLeft);
 
public Q_SLOTS:
    void handleNewBatchTime(uint time, uint batchSize);
 
private:
    float m_batchTimeBuffer[BUFFER_SIZE];
 
    int m_bufferIndex;
    bool m_estimateReady;
};
 
}
 
#endif //BALOO_TIMEESTIMATOR_H