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diff --git a/src/base/CubicSpline.h b/src/base/CubicSpline.h
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+//
+//  libavg - Media Playback Engine. 
+//  Copyright (C) 2003-2014 Ulrich von Zadow
+//
+//  This library is free software; you can redistribute it and/or
+//  modify it under the terms of the GNU Lesser General Public
+//  License as published by the Free Software Foundation; either
+//  version 2 of the License, or (at your option) any later version.
+//
+//  This library is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//  Lesser General Public License for more details.
+//
+//  You should have received a copy of the GNU Lesser General Public
+//  License along with this library; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+//
+//  Current versions can be found at www.libavg.de
+//
+
+#ifndef _CubicSpline_H_
+#define _CubicSpline_H_
+
+#include "../api.h"
+#include "../glm/glm.hpp"
+
+#include <boost/shared_ptr.hpp>
+#include <vector>
+
+namespace avg {
+    
+class AVG_API CubicSpline {
+public:
+    CubicSpline(const std::vector<float>& x, const std::vector<float>& y, 
+            bool bLoop=false);
+    CubicSpline(const std::vector<glm::vec2>& pts, bool bLoop=false);
+    virtual ~CubicSpline();
+
+    float interpolate(float orig);
+
+private:
+    void init();
+
+    std::vector<glm::vec2> m_Pts;
+    std::vector<float> m_Y2; // Second derivatives
+};
+
+typedef boost::shared_ptr<CubicSpline> CubicSplinePtr;
+
+}
+
+#endif 
+
+
+