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diff --git a/src/compositor/extensions/qwltexturesharingextension_p.h b/src/compositor/extensions/qwltexturesharingextension_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2019 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtWaylandCompositor module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QWLTEXTURESHARINGEXTENSION_P_H
+#define QWLTEXTURESHARINGEXTENSION_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 "wayland-util.h"
+
+#include <QtCore/QMap>
+#include <QtCore/QHash>
+
+#include <QtWaylandCompositor/QWaylandCompositorExtensionTemplate>
+#include <QtWaylandCompositor/QWaylandQuickExtension>
+#include <QtWaylandCompositor/QWaylandCompositor>
+
+#include <QQuickImageProvider>
+
+#include <QtWaylandCompositor/private/qwaylandcompositor_p.h>
+#include <QtWaylandCompositor/private/qwlserverbufferintegration_p.h>
+
+#include <QtWaylandCompositor/private/qwayland-server-qt-texture-sharing-unstable-v1.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace QtWayland
+{
+    class ServerBufferIntegration;
+}
+
+class QWaylandTextureSharingExtension;
+class SharedTextureImageResponse;
+
+class Q_WAYLAND_COMPOSITOR_EXPORT QWaylandSharedTextureProvider : public QQuickAsyncImageProvider
+{
+public:
+    QWaylandSharedTextureProvider();
+    ~QWaylandSharedTextureProvider() override;
+
+    QQuickImageResponse *requestImageResponse(const QString &id, const QSize &requestedSize) override;
+    void setExtensionReady(QWaylandTextureSharingExtension *extension);
+
+private:
+    QVector<SharedTextureImageResponse*> m_pendingResponses;
+};
+
+class Q_WAYLAND_COMPOSITOR_EXPORT QWaylandTextureSharingExtension
+    : public QWaylandCompositorExtensionTemplate<QWaylandTextureSharingExtension>
+    , public QtWaylandServer::zqt_texture_sharing_v1
+{
+    Q_OBJECT
+    Q_PROPERTY(QString imageSearchPath WRITE setImageSearchPath)
+public:
+    QWaylandTextureSharingExtension();
+    QWaylandTextureSharingExtension(QWaylandCompositor *compositor);
+    ~QWaylandTextureSharingExtension() override;
+
+    void initialize() override;
+
+    void setImageSearchPath(const QString &path);
+
+    static QWaylandTextureSharingExtension *self() { return s_self; }
+
+public slots:
+    void requestBuffer(const QString &key);
+
+signals:
+     void bufferResult(const QString &key, QtWayland::ServerBuffer *buffer);
+
+protected slots:
+    void cleanupBuffers();
+
+protected:
+    void zqt_texture_sharing_v1_request_image(Resource *resource, const QString &key) override;
+    void zqt_texture_sharing_v1_abandon_image(Resource *resource, const QString &key) override;
+    void zqt_texture_sharing_v1_destroy_resource(Resource *resource) override;
+
+    virtual bool customPixelData(const QString &key, QByteArray *data, QSize *size, uint *glInternalFormat)
+    {
+        Q_UNUSED(key);
+        Q_UNUSED(data);
+        Q_UNUSED(size);
+        Q_UNUSED(glInternalFormat);
+        return false;
+    }
+
+private:
+    QtWayland::ServerBuffer *getBuffer(const QString &key);
+    bool initServerBufferIntegration();
+    QtWayland::ServerBuffer *getCompressedBuffer(const QString &key);
+    QString getExistingFilePath(const QString &key) const;
+    void dumpBufferInfo();
+
+    struct BufferInfo
+    {
+        BufferInfo(QtWayland::ServerBuffer *b = nullptr) : buffer(b) {}
+        QtWayland::ServerBuffer *buffer = nullptr;
+        bool usedLocally = false;
+    };
+
+    QStringList m_image_dirs;
+    QStringList m_image_suffixes;
+    QHash<QString, BufferInfo> m_server_buffers;
+    QtWayland::ServerBufferIntegration *m_server_buffer_integration = nullptr;
+
+    static QWaylandTextureSharingExtension *s_self;
+};
+
+Q_COMPOSITOR_DECLARE_QUICK_EXTENSION_CLASS(QWaylandTextureSharingExtension)
+
+QT_END_NAMESPACE
+
+#endif // QWLTEXTURESHARINGEXTENSION_P_H