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+/*
+    Copyright (C) 2012-2014 Carl Hetherington <cth@carlh.net>
+
+    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.
+
+*/
+
+/** @file  src/content.h
+ *  @brief Content class.
+ */
+
+#ifndef LIBDCP_CONTENT_H
+#define LIBDCP_CONTENT_H
+
+#include "types.h"
+#include "asset.h"
+#include <libxml++/libxml++.h>
+#include <boost/filesystem.hpp>
+#include <boost/function.hpp>
+#include <string>
+#include <list>
+
+namespace ASDCP {
+	class WriterInfo;
+}
+
+namespace xmlpp {
+	class Element;
+}
+
+namespace dcp
+{
+
+/** @class Content
+ *  @brief An asset that represents a piece of content, i.e. picture, sound or subtitle.
+ *
+ *  Such a piece of content will be contained in a file (either MXF or XML) within a DCP.
+ */
+class Content : public Asset
+{
+public:
+	Content (boost::filesystem::path file);
+	Content (Fraction edit_rate);
+	virtual ~Content () {}
+
+	bool equals (
+		boost::shared_ptr<const Content> other,
+		EqualityOptions opt,
+		boost::function<void (NoteType, std::string)>
+		) const;
+
+	Fraction edit_rate () const {
+		return _edit_rate;
+	}
+
+	int64_t intrinsic_duration () const {
+		return _intrinsic_duration;
+	}
+
+protected:
+	friend class MXFWriter;
+
+	virtual std::string asdcp_kind () const = 0;
+	
+	Fraction _edit_rate;
+	int64_t _intrinsic_duration;
+};
+
+}
+
+#endif