--- /dev/null
+/*
+ Copyright (C) 2012-2015 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.
+
+*/
+
+/** @file src/mono_picture_asset_writer.h
+ * @brief MonoPictureAssetWriter class
+ */
+
+#ifndef LIBDCP_MONO_PICTURE_ASSET_WRITER_H
+#define LIBDCP_MONO_PICTURE_ASSET_WRITER_H
+
+#include "picture_asset_writer.h"
+#include <boost/shared_ptr.hpp>
+#include <boost/utility.hpp>
+#include <stdint.h>
+#include <string>
+#include <fstream>
+
+namespace dcp {
+
+/** @class MonoPictureAssetWriter
+ * @brief A helper class for writing to MonoPictureAssets
+ *
+ * Objects of this class can only be created with MonoPictureAsset::start_write().
+ *
+ * Frames can be written to the MonoPictureAsset by calling write() with a JPEG2000 image
+ * (a verbatim .j2c file). finalize() must be called after the last frame has been written.
+ * The action of finalize() can't be done in MonoPictureAssetWriter's destructor as it may
+ * throw an exception.
+ */
+class MonoPictureAssetWriter : public PictureAssetWriter
+{
+public:
+ FrameInfo write (uint8_t *, int);
+ void fake_write (int size);
+ void finalize ();
+
+private:
+ friend class MonoPictureAsset;
+
+ MonoPictureAssetWriter (PictureAsset *, boost::filesystem::path file, Standard standard, bool);
+ void start (uint8_t *, int);
+
+ /* do this with an opaque pointer so we don't have to include
+ ASDCP headers
+ */
+
+ struct ASDCPState;
+ boost::shared_ptr<ASDCPState> _state;
+};
+
+}
+
+#endif