softwarevsyncmonitor.h

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/*
    SPDX-FileCopyrightText: 2020 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
 
    SPDX-License-Identifier: GPL-2.0-or-later
*/
 
#pragma once
 
#include "utils/vsyncmonitor.h"
 
#include <QTimer>
#include <memory>
 
namespace KWin
{
 
class KWIN_EXPORT SoftwareVsyncMonitor : public VsyncMonitor
{
    Q_OBJECT
 
public:
    static std::unique_ptr<SoftwareVsyncMonitor> create();
 
    int refreshRate() const;
    void setRefreshRate(int refreshRate);
 
public Q_SLOTS:
    void arm() override;
 
private:
    explicit SoftwareVsyncMonitor();
    void handleSyntheticVsync();
 
    QTimer m_softwareClock;
    int m_refreshRate = 60000;
    std::chrono::nanoseconds m_vblankTimestamp = std::chrono::nanoseconds::zero();
};
 
} // namespace KWin