sharedtextureprovider_p.h

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// Copyright (C) 2019 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

//

//  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.

//

#ifndef SHAREDTEXTUREPROVIDER_H

#define SHAREDTEXTUREPROVIDER_H

#include <QOpenGLFunctions>

#include <QQuickImageProvider>

#include <QtQuick/QSGTexture>

#include <QScopedPointer>

#include <QHash>

#include <QtWaylandClient/private/qwaylandserverbufferintegration_p.h>

QT_BEGIN_NAMESPACE

class TextureSharingExtension;

class SharedTextureRegistry : public QObject

    Q_OBJECT

public:

    SharedTextureRegistry();

    ~SharedTextureRegistry() override;

    const QtWaylandClient::QWaylandServerBuffer *bufferForId(const QString &id) const;

    void requestBuffer(const QString &id);

    void abandonBuffer(const QString &id);

    static bool preinitialize();

public Q_SLOTS:

    void receiveBuffer(QtWaylandClient::QWaylandServerBuffer *buffer, const QString &id);

Q_SIGNALS:

    void replyReceived(const QString &id);

private Q_SLOTS:

    void handleExtensionActive();

private:

    TextureSharingExtension *m_extension = nullptr;

    QHash<QString, QtWaylandClient::QWaylandServerBuffer *> m_buffers;

    QStringList m_pendingBuffers;

};

class SharedTextureProvider : public QQuickAsyncImageProvider

public:

    SharedTextureProvider();

    ~SharedTextureProvider() override;

    QQuickImageResponse *requestImageResponse(const QString &id, const QSize &requestedSize) override;

private:

    SharedTextureRegistry *m_registry = nullptr;

    bool m_sharingAvailable = false;

};

QT_END_NAMESPACE

#endif // SHAREDTEXTUREPROVIDER_H