1 files changed, 133 insertions, 0 deletions
diff --git a/src/lib/writer.h b/src/lib/writer.h
new file mode 100644
index 000000000..d922cfce0
--- /dev/null
+++ b/src/lib/writer.h
@@ -0,0 +1,133 @@
+/*
+    Copyright (C) 2012 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.
+
+*/
+
+#include <list>
+#include <boost/shared_ptr.hpp>
+#include <boost/thread.hpp>
+#include <boost/thread/condition.hpp>
+#include "exceptions.h"
+#include "types.h"
+
+class Film;
+class EncodedData;
+class AudioBuffers;
+class Job;
+
+namespace libdcp {
+	class MonoPictureAsset;
+	class MonoPictureAssetWriter;
+	class StereoPictureAsset;
+	class StereoPictureAssetWriter;
+	class PictureAsset;
+	class PictureAssetWriter;
+	class SoundAsset;
+	class SoundAssetWriter;
+}
+
+struct QueueItem
+{
+public:
+	enum Type {
+		/** a normal frame with some JPEG200 data */
+		FULL,
+		/** a frame whose data already exists in the MXF,
+		    and we fake-write it; i.e. we update the writer's
+		    state but we use the data that is already on disk.
+		*/
+		FAKE,
+		/** this is a repeat of the last frame to be written */
+		REPEAT
+	} type;
+
+	/** encoded data for FULL */
+	boost::shared_ptr<const EncodedData> encoded;
+	/** size of data for FAKE */
+	int size;
+	/** frame index */
+	int frame;
+	Eyes eyes;
+};
+
+bool operator< (QueueItem const & a, QueueItem const & b);
+bool operator== (QueueItem const & a, QueueItem const & b);
+
+class Writer : public ExceptionStore, public boost::noncopyable
+{
+public:
+	Writer (boost::shared_ptr<const Film>, boost::shared_ptr<Job>);
+
+	bool can_fake_write (int) const;
+	
+	void write (boost::shared_ptr<const EncodedData>, int, Eyes);
+	void fake_write (int, Eyes);
+	void write (boost::shared_ptr<const AudioBuffers>);
+	void repeat (int f, Eyes);
+	void finish ();
+
+private:
+
+	void thread ();
+	void check_existing_picture_mxf ();
+	bool check_existing_picture_mxf_frame (FILE *, int, Eyes);
+	bool have_sequenced_image_at_queue_head () const;
+
+	/** our Film */
+	boost::shared_ptr<const Film> _film;
+	boost::shared_ptr<Job> _job;
+	/** the first frame index that does not already exist in our MXF */
+	int _first_nonexistant_frame;
+
+	/** our thread, or 0 */
+	boost::thread* _thread;
+	/** true if our thread should finish */
+	bool _finish;
+	/** queue of things to write to disk */
+	std::list<QueueItem> _queue;
+	/** number of FULL frames whose JPEG200 data is currently held in RAM */
+	int _queued_full_in_memory;
+	/** mutex for thread state */
+	mutable boost::mutex _mutex;
+	/** condition to manage thread wakeups */
+	boost::condition _condition;
+	/** the data of the last written frame, or 0 if there isn't one */
+	boost::shared_ptr<const EncodedData> _last_written[EYES_COUNT];
+	/** the index of the last written frame */
+	int _last_written_frame;
+	Eyes _last_written_eyes;
+	/** maximum number of frames to hold in memory, for when we are managing
+	    ordering
+	*/
+	static const int _maximum_frames_in_memory;
+
+	/** number of FULL written frames */
+	int _full_written;
+	/** number of FAKE written frames */
+	int _fake_written;
+	/** number of REPEAT written frames */
+	int _repeat_written;
+	/** number of frames pushed to disk and then recovered
+	    due to the limit of frames to be held in memory.
+	*/
+	int _pushed_to_disk;
+	
+	boost::shared_ptr<libdcp::PictureAsset> _picture_asset;
+	boost::shared_ptr<libdcp::PictureAssetWriter> _picture_asset_writer;
+	boost::shared_ptr<libdcp::SoundAsset> _sound_asset;
+	boost::shared_ptr<libdcp::SoundAssetWriter> _sound_asset_writer;
+};