qwlclientbuffer_p.h

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// Copyright (C) 2019 The Qt Company Ltd.

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

// Qt-Security score:significant reason:default

#ifndef QWLCLIENTBUFFER_P_H

#define QWLCLIENTBUFFER_P_H

//

//  W A R N I N G

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

//

// This file is not part of the Qt API.  It exists purely as an

// implementation detail.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include <QtCore/QRect>

#include <QtGui/qopengl.h>

#include <QImage>

#include <QAtomicInt>

#include <QScopedPointer>

#include <QtWaylandCompositor/QWaylandSurface>

#include <QtWaylandCompositor/QWaylandBufferRef>

#include <QtCore/private/qglobal_p.h>

#include <wayland-server-core.h>

QT_BEGIN_NAMESPACE

class QWaylandSurfaceTextureProvider;

class QWaylandClientBufferIntegration;

class QWaylandBufferRef;

class QWaylandCompositor;

class QOpenGLTexture;

namespace QtWayland {

struct surface_buffer_destroy_listener

    struct wl_listener listener;

    class ClientBuffer *surfaceBuffer = nullptr;

};

class Q_WAYLANDCOMPOSITOR_EXPORT ClientBuffer

public:

    ClientBuffer(struct ::wl_resource *bufferResource);

    virtual ~ClientBuffer();

    virtual QWaylandBufferRef::BufferFormatEgl bufferFormatEgl() const;

    virtual QSize size() const = 0;

    virtual QWaylandSurface::Origin origin() const = 0;

    virtual quintptr lockNativeBuffer() { return 0; }

    virtual void unlockNativeBuffer(quintptr native_buffer) const { Q_UNUSED(native_buffer); }

    virtual QImage image() const { return QImage(); }

    inline bool isCommitted() const { return m_committed; }

    virtual void setCommitted(QRegion &damage);

    bool isDestroyed() { return m_destroyed; }

    virtual bool isProtected() { return false; }

    inline struct ::wl_resource *waylandBufferHandle() const { return m_buffer; }

    bool isSharedMemory() const { return wl_shm_buffer_get(m_buffer); }

#if QT_CONFIG(opengl)

    virtual QOpenGLTexture *toOpenGlTexture(int plane = 0) = 0;

#endif

    static bool hasContent(ClientBuffer *buffer) { return buffer && buffer->waylandBufferHandle(); }

    static bool hasProtectedContent(ClientBuffer *buffer) { return buffer && buffer->isProtected(); }

protected:

    void ref();

    void deref();

    void sendRelease();

    virtual void setDestroyed();

    struct ::wl_resource *m_buffer = nullptr;

    QRegion m_damage;

    bool m_textureDirty = false;

private:

    bool m_committed = false;

    bool m_destroyed = false;

    QAtomicInt m_refCount;

    friend class ::QWaylandBufferRef;

    friend class BufferManager;

    friend class ::QWaylandSurfaceTextureProvider;

};

class Q_WAYLANDCOMPOSITOR_EXPORT SharedMemoryBuffer : public ClientBuffer

public:

    SharedMemoryBuffer(struct ::wl_resource *bufferResource);

    QSize size() const override;

    QWaylandSurface::Origin origin() const  override;

    QImage image() const override;

#if QT_CONFIG(opengl)

    QOpenGLTexture *toOpenGlTexture(int plane = 0) override;

private:

    QScopedPointer<QOpenGLTexture> m_shmTexture;

#endif

};

QT_END_NAMESPACE

#endif // QWLCLIENTBUFFER_P_H