vasilito
cf12defd28
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
48 lines
1.1 KiB
C++
48 lines
1.1 KiB
C++
/*
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SPDX-FileCopyrightText: 2020 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#pragma once
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#include "utils/vsyncmonitor.h"
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#include <QTimer>
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#include <memory>
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namespace KWin
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{
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/**
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* The SoftwareVsyncMonitor class provides synthetic vblank events with constant interval.
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*
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* The software vsync monitor can never fail and it is always available. It can be used as
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* fallback if hardware based approaches to monitor vsync events are unavailable.
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*
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* The vblank interval can be changed by calling the setRefreshRate() function.
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*/
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class KWIN_EXPORT SoftwareVsyncMonitor : public VsyncMonitor
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{
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Q_OBJECT
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public:
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static std::unique_ptr<SoftwareVsyncMonitor> create();
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int refreshRate() const;
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void setRefreshRate(int refreshRate);
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public Q_SLOTS:
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void arm() override;
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private:
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explicit SoftwareVsyncMonitor();
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void handleSyntheticVsync();
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QTimer m_softwareClock;
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int m_refreshRate = 60000;
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std::chrono::nanoseconds m_vblankTimestamp = std::chrono::nanoseconds::zero();
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};
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} // namespace KWin
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