qplatformgraphicsbuffer.h

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// Copyright (C) 2016 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only

// Qt-Security score:significant reason:default

#ifndef QPLATFORMGRAPHICSBUFFER_H

#define QPLATFORMGRAPHICSBUFFER_H

//

//  W A R N I N G

//  -------------

//

// This file is part of the QPA API and is not meant to be used

// in applications. Usage of this API may make your code

// source and binary incompatible with future versions of Qt.

//

#include <QtGui/qtguiglobal.h>

#include <QtCore/QSize>

#include <QtCore/QRect>

#include <QtGui/QPixelFormat>

#include <QtCore/qflags.h>

#include <QtCore/QObject>

QT_BEGIN_NAMESPACE

class Q_GUI_EXPORT QPlatformGraphicsBuffer : public QObject

Q_OBJECT

public:

    enum AccessType

        None                = 0x00,

        SWReadAccess        = 0x01,

        SWWriteAccess       = 0x02,

        TextureAccess       = 0x04,

        HWCompositor        = 0x08

};

    Q_ENUM(AccessType)

    Q_DECLARE_FLAGS(AccessTypes, AccessType)

    enum Origin {

        OriginBottomLeft,

        OriginTopLeft

};

    Q_ENUM(Origin)

    ~QPlatformGraphicsBuffer();

    AccessTypes isLocked() const { return m_lock_access; }

    bool lock(AccessTypes access, const QRect &rect = QRect());

    void unlock();

    virtual bool bindToTexture(const QRect &rect = QRect()) const;

    virtual const uchar *data() const;

    virtual uchar *data();

    virtual int bytesPerLine() const;

    int byteCount() const;

    virtual Origin origin() const;

    QSize size() const { return m_size; }

    QPixelFormat format() const { return m_format; }

Q_SIGNALS:

    void unlocked(AccessTypes previousAccessTypes);

protected:

    QPlatformGraphicsBuffer(const QSize &size, const QPixelFormat &format);

    virtual bool doLock(AccessTypes access, const QRect &rect = QRect()) = 0;

    virtual void doUnlock() = 0;

private:

    QSize m_size;

    QPixelFormat m_format;

    AccessTypes m_lock_access;

};

QT_END_NAMESPACE

#endif //QPLATFORMGRAPHICSBUFFER_H