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102 lines
2.4 KiB
C++
102 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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Copyright (C) 2015 Martin Gräßlin <mgraesslin@kde.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************/
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#ifndef KWIN_DRM_BACKEND_H
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#define KWIN_DRM_BACKEND_H
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#include "abstract_backend.h"
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#include <QImage>
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#include <QSize>
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#include <xf86drmMode.h>
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namespace KWin
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{
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class Udev;
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class DrmBuffer;
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class KWIN_EXPORT DrmBackend : public AbstractBackend
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{
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Q_OBJECT
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public:
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explicit DrmBackend(QObject *parent = nullptr);
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virtual ~DrmBackend();
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Screens *createScreens(QObject *parent = nullptr) override;
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QPainterBackend *createQPainterBackend() override;
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void init();
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DrmBuffer *createBuffer(const QSize &size);
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void present(DrmBuffer *buffer);
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QSize size() const {
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// TODO: this is wrong
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return m_resolution;
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}
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int fd() const {
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return m_fd;
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}
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Q_SIGNALS:
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void screensQueried();
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private:
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static void pageFlipHandler(int fd, unsigned int frame, unsigned int sec, unsigned int usec, void *data);
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void openDrm();
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void queryResources();
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QScopedPointer<Udev> m_udev;
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int m_fd = -1;
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int m_drmId = 0;
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// TODO: this is wrong
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QSize m_resolution;
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quint32 m_crtcId = 0;
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quint32 m_connector = 0;
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drmModeModeInfo m_mode;
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bool m_pageFlipPending = false;
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};
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class DrmBuffer
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{
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public:
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~DrmBuffer();
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bool map();
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QImage *image() const {
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return m_image;
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}
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private:
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friend class DrmBackend;
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DrmBuffer(DrmBackend *backend, const QSize &size);
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DrmBackend *m_backend;
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QSize m_size;
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quint32 m_handle = 0;
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quint32 m_bufferId = 0;
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quint32 m_stride = 0;
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quint64 m_bufferSize = 0;
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void *m_memory = nullptr;
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QImage *m_image = nullptr;
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};
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}
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#endif
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