Rename some classes.

[dcpomatic.git] / src / lib / j2k_encoder.h

diff --git a/src/lib/j2k_encoder.h b/src/lib/j2k_encoder.h
new file mode 100644 (file)
index 0000000..cc8a854
--- /dev/null
+++ b/src/lib/j2k_encoder.h
@@ -0,0 +1,109 @@
+/*
+    Copyright (C) 2012-2016 Carl Hetherington <cth@carlh.net>
+
+    This file is part of DCP-o-matic.
+
+    DCP-o-matic 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.
+
+    DCP-o-matic 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 DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+#ifndef DCPOMATIC_J2K_ENCODER_H
+#define DCPOMATIC_J2K_ENCODER_H
+
+/** @file  src/j2k_encoder.h
+ *  @brief J2KEncoder class.
+ */
+
+#include "util.h"
+#include "cross.h"
+#include "event_history.h"
+#include "exception_store.h"
+#include <boost/shared_ptr.hpp>
+#include <boost/thread/mutex.hpp>
+#include <boost/thread/condition.hpp>
+#include <boost/thread.hpp>
+#include <boost/optional.hpp>
+#include <boost/signals2.hpp>
+#include <boost/enable_shared_from_this.hpp>
+#include <list>
+#include <stdint.h>
+
+class Film;
+class EncodeServerDescription;
+class DCPVideo;
+class Writer;
+class Job;
+class PlayerVideo;
+
+/** @class J2KEncoder
+ *  @brief Class to manage encoding to J2K.
+ *
+ *  This class keeps a queue of frames to be encoded and distributes
+ *  the work around threads and encoding servers.
+ */
+
+class J2KEncoder : public boost::noncopyable, public ExceptionStore, public boost::enable_shared_from_this<J2KEncoder>
+{
+public:
+       J2KEncoder (boost::shared_ptr<const Film> film, boost::shared_ptr<Writer> writer);
+       ~J2KEncoder ();
+
+       /** Called to indicate that a processing run is about to begin */
+       void begin ();
+
+       /** Called to pass a bit of video to be encoded as the next DCP frame */
+       void encode (boost::shared_ptr<PlayerVideo> pv, DCPTime time);
+
+       /** Called when a processing run has finished */
+       void end ();
+
+       float current_encoding_rate () const;
+       int video_frames_enqueued () const;
+
+       void servers_list_changed ();
+
+private:
+
+       static void call_servers_list_changed (boost::weak_ptr<J2KEncoder> encoder);
+
+       void frame_done ();
+
+       void encoder_thread (boost::optional<EncodeServerDescription>);
+       void terminate_threads ();
+
+       /** Film that we are encoding */
+       boost::shared_ptr<const Film> _film;
+
+       EventHistory _history;
+
+       /** Mutex for _threads */
+       mutable boost::mutex _threads_mutex;
+       std::list<boost::thread *> _threads;
+       mutable boost::mutex _queue_mutex;
+       std::list<boost::shared_ptr<DCPVideo> > _queue;
+       /** condition to manage thread wakeups when we have nothing to do */
+       boost::condition _empty_condition;
+       /** condition to manage thread wakeups when we have too much to do */
+       boost::condition _full_condition;
+
+       boost::shared_ptr<Writer> _writer;
+       Waker _waker;
+
+       boost::shared_ptr<PlayerVideo> _last_player_video;
+       boost::optional<DCPTime> _last_player_video_time;
+
+       boost::signals2::scoped_connection _server_found_connection;
+};
+
+#endif