/******************************************************************** KWin - the KDE window manager This file is part of the KDE project. Copyright (C) 2015 Martin Gräßlin <mgraesslin@kde.org> This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. *********************************************************************/ #ifndef KWIN_FB_BACKEND_H #define KWIN_FB_BACKEND_H #include "platform.h" #include <QImage> #include <QSize> namespace KWin { class KWIN_EXPORT FramebufferBackend : public Platform { Q_OBJECT Q_INTERFACES(KWin::Platform) Q_PLUGIN_METADATA(IID "org.kde.kwin.Platform" FILE "fbdev.json") public: explicit FramebufferBackend(QObject *parent = nullptr); virtual ~FramebufferBackend(); Screens *createScreens(QObject *parent = nullptr) override; QPainterBackend *createQPainterBackend() override; QSize screenSize() const override { return m_resolution; } void init() override; bool isValid() const { return m_fd >= 0; } QSize size() const { return m_resolution; } QSize physicalSize() const { return m_physicalSize; } void map(); void unmap(); void *mappedMemory() const { return m_memory; } int bytesPerLine() const { return m_bytesPerLine; } int bufferSize() const { return m_bufferLength; } quint32 bitsPerPixel() const { return m_bitsPerPixel; } QImage::Format imageFormat() const; /** * @returns whether the imageFormat is BGR instead of RGB. **/ bool isBGR() const { return m_bgr; } QVector<CompositingType> supportedCompositors() const override { return QVector<CompositingType>{QPainterCompositing}; } private: void openFrameBuffer(); bool queryScreenInfo(); void initImageFormat(); QSize m_resolution; QSize m_physicalSize; QByteArray m_id; struct Color { quint32 offset; quint32 length; }; Color m_red; Color m_green; Color m_blue; Color m_alpha; quint32 m_bitsPerPixel = 0; int m_fd = -1; quint32 m_bufferLength = 0; int m_bytesPerLine = 0; void *m_memory = nullptr; QImage::Format m_imageFormat = QImage::Format_Invalid; bool m_bgr = false; }; } #endif