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diff --git a/src/gui/util/qtexturefiledata_p.h b/src/gui/util/qtexturefiledata_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtGui 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 QTEXTUREFILEDATA_P_H
+#define QTEXTUREFILEDATA_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 <QtGui/qtguiglobal.h>
+#include <QSharedDataPointer>
+#include <QLoggingCategory>
+#include <QDebug>
+
+QT_BEGIN_NAMESPACE
+
+Q_DECLARE_LOGGING_CATEGORY(lcQtGuiTextureIO)
+
+class QTextureFileDataPrivate;
+
+class Q_GUI_EXPORT QTextureFileData
+{
+public:
+    QTextureFileData();
+    QTextureFileData(const QTextureFileData &other);
+    QTextureFileData &operator=(const QTextureFileData &other);
+    ~QTextureFileData();
+
+    bool isNull() const;
+    bool isValid() const;
+
+    void clear();
+
+    QByteArray data() const;
+    void setData(const QByteArray &data);
+
+    int dataOffset(int level = 0) const;
+    void setDataOffset(int offset, int level = 0);
+
+    int dataLength(int level = 0) const;
+    void setDataLength(int length, int level = 0);
+
+    int numLevels() const;
+    void setNumLevels(int num);
+
+    QSize size() const;
+    void setSize(const QSize &size);
+
+    quint32 glFormat() const;
+    void setGLFormat(quint32 format);
+
+    quint32 glInternalFormat() const;
+    void setGLInternalFormat(quint32 format);
+
+    quint32 glBaseInternalFormat() const;
+    void setGLBaseInternalFormat(quint32 format);
+
+    QByteArray logName() const;
+    void setLogName(const QByteArray &name);
+
+private:
+    QSharedDataPointer<QTextureFileDataPrivate> d;
+};
+
+Q_DECLARE_TYPEINFO(QTextureFileData, Q_MOVABLE_TYPE);
+
+Q_GUI_EXPORT QDebug operator<<(QDebug dbg, const QTextureFileData &d);
+
+QT_END_NAMESPACE
+
+#endif // QABSTRACTLAYOUTSTYLEINFO_P_H