109 lines
2.4 KiB
C++
109 lines
2.4 KiB
C++
/*
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KWin - the KDE window manager
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This file is part of the KDE project.
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SPDX-FileCopyrightText: 2015 Martin Gräßlin <mgraesslin@kde.org>
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SPDX-FileCopyrightText: 2019 Roman Gilg <subdiff@gmail.com>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef KWIN_FB_BACKEND_H
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#define KWIN_FB_BACKEND_H
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#include "abstract_wayland_output.h"
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#include "platform.h"
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#include <QImage>
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#include <QSize>
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namespace KWin
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{
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class FramebufferOutput : public AbstractWaylandOutput
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{
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Q_OBJECT
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public:
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FramebufferOutput(QObject *parent = nullptr);
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~FramebufferOutput() override = default;
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void init(const QSize &pixelSize, const QSize &physicalSize);
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};
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class KWIN_EXPORT FramebufferBackend : public Platform
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{
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Q_OBJECT
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Q_INTERFACES(KWin::Platform)
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Q_PLUGIN_METADATA(IID "org.kde.kwin.Platform" FILE "fbdev.json")
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public:
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explicit FramebufferBackend(QObject *parent = nullptr);
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~FramebufferBackend() override;
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Screens *createScreens(QObject *parent = nullptr) override;
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QPainterBackend *createQPainterBackend() override;
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QSize screenSize() const override;
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void init() override;
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bool isValid() const {
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return m_fd >= 0;
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}
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void map();
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void unmap();
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void *mappedMemory() const {
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return m_memory;
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}
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int bytesPerLine() const {
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return m_bytesPerLine;
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}
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int bufferSize() const {
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return m_bufferLength;
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}
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quint32 bitsPerPixel() const {
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return m_bitsPerPixel;
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}
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QImage::Format imageFormat() const;
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/**
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* @returns whether the imageFormat is BGR instead of RGB.
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*/
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bool isBGR() const {
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return m_bgr;
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}
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Outputs outputs() const override;
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Outputs enabledOutputs() const override;
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QVector<CompositingType> supportedCompositors() const override {
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return QVector<CompositingType>{QPainterCompositing};
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}
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private:
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void openFrameBuffer();
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bool handleScreenInfo();
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void initImageFormat();
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QVector<FramebufferOutput*> m_outputs;
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QByteArray m_id;
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struct Color {
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quint32 offset;
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quint32 length;
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};
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Color m_red;
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Color m_green;
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Color m_blue;
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Color m_alpha;
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quint32 m_bitsPerPixel = 0;
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int m_fd = -1;
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quint32 m_bufferLength = 0;
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int m_bytesPerLine = 0;
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void *m_memory = nullptr;
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QImage::Format m_imageFormat = QImage::Format_Invalid;
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bool m_bgr = false;
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};
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}
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#endif
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