add another missing file

libs/ardour/ardour/scene_change.h

@@ -0,0 +1,49 @@
+/*
+    Copyright (C) 2014 Paul Davis
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program 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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#ifndef __libardour_scene_change_h__
+#define __libardour_scene_change_h__
+
+#include "pbd/stateful.h"
+
+#include "ardour/types.h"
+
+namespace ARDOUR
+{
+
+class SceneChange : public PBD::Stateful
+{
+  public:
+        SceneChange (framepos_t t) : _time (t) {};
+        virtual ~SceneChange () {};
+
+	void set_time (framepos_t);
+	framepos_t time() const { return _time; }
+
+	static boost::shared_ptr<SceneChange> factory (const XMLNode&, int version);
+	static std::string xml_node_name;
+
+    private:
+	framepos_t _time;
+};
+
+} /* namespace */
+	
+
+#endif /* __libardour_scene_change_h__ */