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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Copyright (C) 2019 Luxoft Sweden AB
** Copyright (C) 2018 Pelagicore AG
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtApplicationManager module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#pragma once
#include <QElapsedTimer>
#include <QObject>
#include <QPointer>
#include <QTimer>
#include <QtAppManCommon/global.h>
#include <limits>
#if defined(AM_MULTI_PROCESS)
# include <QtWaylandCompositor/QWaylandQuickSurface>
#endif
QT_BEGIN_NAMESPACE_AM
class FrameTimer : public QObject
{
Q_OBJECT
Q_CLASSINFO("AM-QmlType", "QtApplicationManager/FrameTimer 2.0")
Q_PROPERTY(qreal averageFps READ averageFps NOTIFY updated)
Q_PROPERTY(qreal minimumFps READ minimumFps NOTIFY updated)
Q_PROPERTY(qreal maximumFps READ maximumFps NOTIFY updated)
Q_PROPERTY(qreal jitterFps READ jitterFps NOTIFY updated)
Q_PROPERTY(QObject* window READ window WRITE setWindow NOTIFY windowChanged)
Q_PROPERTY(int interval READ interval WRITE setInterval NOTIFY intervalChanged)
Q_PROPERTY(bool running READ running WRITE setRunning NOTIFY runningChanged)
Q_PROPERTY(QStringList roleNames READ roleNames CONSTANT)
public:
FrameTimer(QObject *parent = nullptr);
QStringList roleNames() const;
Q_INVOKABLE void update();
qreal averageFps() const;
qreal minimumFps() const;
qreal maximumFps() const;
qreal jitterFps() const;
QObject *window() const;
void setWindow(QObject *value);
bool running() const;
void setRunning(bool value);
int interval() const;
void setInterval(int value);
signals:
void updated();
void intervalChanged();
void runningChanged();
void windowChanged();
protected slots:
void newFrame();
protected:
virtual bool connectToAppManWindow();
virtual void disconnectFromAppManWindow();
QPointer<QObject> m_window;
private:
void reset();
bool connectToQuickWindow();
int m_count = 0;
int m_sum = 0;
int m_min = std::numeric_limits<int>::max();
int m_max = 0;
qreal m_jitter = 0.0;
QElapsedTimer m_timer;
QTimer m_updateTimer;
qreal m_averageFps;
qreal m_minimumFps;
qreal m_maximumFps;
qreal m_jitterFps;
static const int IdealFrameTime = 16667; // usec - could be made configurable via an env variable
static const qreal MicrosInSec;
};
QT_END_NAMESPACE_AM
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