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diff --git a/src/lib/jpeg2000_encoder.h b/src/lib/jpeg2000_encoder.h
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+/*
+    Copyright (C) 2015 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.
+
+*/
+
+#ifndef DCPOMATIC_JPEG2000_ENCODER_H
+#define DCPOMATIC_JPEG2000_ENCODER_H
+
+#include "types.h"
+#include <dcp/types.h>
+#include <boost/shared_ptr.hpp>
+#include <boost/optional.hpp>
+#include <list>
+
+namespace dcp {
+	class XYZImage;
+}
+
+class EncodedData;
+
+class JPEG2000Encoder
+{
+public:
+	virtual ~JPEG2000Encoder () {}
+	
+	/** @return Internationalised descriptive name for this encoder */
+	virtual std::string name () const = 0;
+	/** @return Non-internationalised ID for this encoder */
+	virtual std::string id () const = 0;
+
+	/** @param input XYZ input frame.
+	 *  @param note_handler Handler for notes about the encode.
+	 
+	 *  @return Encoded JPEG2000 data.
+	 */
+	boost::shared_ptr<EncodedData> encode (
+		boost::shared_ptr<const dcp::XYZImage> input,
+		dcp::NoteHandler note_handler,
+		int bandwidth,
+		int frame_rate,
+		Resolution resolution,
+		bool threed
+		);
+
+ 	static void setup_encoders ();
+	/** @return Return all available JPEG2000 encoders in order of preference (best first) */
+	static std::vector<boost::shared_ptr<JPEG2000Encoder> > all ();
+	static boost::shared_ptr<JPEG2000Encoder> from_id (std::string id);
+
+protected:
+
+	virtual boost::shared_ptr<EncodedData> do_encode (
+		boost::shared_ptr<const dcp::XYZImage> input,
+		dcp::NoteHandler note_handler
+		) = 0;
+	
+	virtual void set_bandwidth (int bandwidth) = 0;
+	virtual void set_frame_rate (int frame_rate) = 0;
+	virtual void set_resolution (Resolution resolution) = 0;
+	virtual void set_threed (bool threed) = 0;
+
+	boost::optional<int> _last_bandwidth;
+	boost::optional<int> _last_frame_rate;
+	boost::optional<Resolution> _last_resolution;
+	boost::optional<bool> _last_threed;
+
+	static std::vector<boost::shared_ptr<JPEG2000Encoder> > _encoders;
+};
+
+#endif