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diff --git a/include/avmedia/MediaControlBase.hxx b/include/avmedia/MediaControlBase.hxx
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+++ b/include/avmedia/MediaControlBase.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+#pragma once
+
+#include <config_options.h>
+#include <vcl/weld.hxx>
+
+#include <avmedia/avmediadllapi.h>
+
+namespace avmedia { class MediaItem; }
+
+#define AVMEDIA_TIME_RANGE          2048
+
+#define AVMEDIA_ZOOMLEVEL_50        0
+#define AVMEDIA_ZOOMLEVEL_100       1
+#define AVMEDIA_ZOOMLEVEL_200       2
+#define AVMEDIA_ZOOMLEVEL_FIT       3
+#define AVMEDIA_ZOOMLEVEL_SCALED    4
+#define AVMEDIA_ZOOMLEVEL_INVALID   65535
+
+namespace avmedia {
+
+enum class MediaControlStyle
+{
+    SingleLine = 0,
+    MultiLine = 1
+};
+
+class UNLESS_MERGELIBS(AVMEDIA_DLLPUBLIC) MediaControlBase
+{
+public:
+    MediaControlBase();
+    virtual ~MediaControlBase(){};
+
+protected:
+    std::unique_ptr<weld::Toolbar> mxPlayToolBox;
+    std::unique_ptr<weld::Scale> mxTimeSlider;
+    std::unique_ptr<weld::Toolbar> mxMuteToolBox;
+    std::unique_ptr<weld::Scale> mxVolumeSlider;
+    std::unique_ptr<weld::ComboBox> mxZoomListBox;
+    std::unique_ptr<weld::Entry> mxTimeEdit;
+    bool mbCurrentlySettingZoom;
+
+    virtual void InitializeWidgets();
+    virtual void UpdateToolBoxes(const MediaItem& rMediaItem);
+    void UpdateVolumeSlider( MediaItem const & aMediaItem );
+    void UpdateTimeSlider( MediaItem const & aMediaItem );
+    void UpdateTimeField( MediaItem const & aMediaItem, double fTime );
+    void UpdatePlayState(const MediaItem& rMediaItem);
+    void SelectPlayToolBoxItem( MediaItem& aExecItem, MediaItem const & aItem, std::u16string_view rId);
+    void disposeWidgets();
+};
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */