/*
- Copyright (C) 2012-2014 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2016 Carl Hetherington <cth@carlh.net>
- This program is free software; you can redistribute it and/or modify
+ 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.
- This program is distributed in the hope that it will be useful,
+ 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 this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef DCPOMATIC_ENCODER_H
#define DCPOMATIC_ENCODER_H
-/** @file src/encoder.h
- * @brief Encoder to J2K and WAV for DCP.
+/** @file src/encoder.h
+ * @brief Encoder class.
*/
+#include "util.h"
+#include "cross.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>
-extern "C" {
-#include <libavutil/samplefmt.h>
-#include <libswresample/swresample.h>
-}
-#include "util.h"
-#include "config.h"
-#include "cross.h"
-class Image;
-class AudioBuffers;
class Film;
-class ServerDescription;
-class DCPVideoFrame;
-class EncodedData;
+class EncodeServerDescription;
+class DCPVideo;
class Writer;
class Job;
-class ServerFinder;
-class PlayerVideoFrame;
+class PlayerVideo;
/** @class Encoder
- * @brief Encoder to J2K and WAV for DCP.
+ * @brief Class to manage encoding to JPEG2000.
*
- * Video is supplied to process_video as RGB frames, and audio
- * is supplied as uncompressed PCM in blocks of various sizes.
+ * This class keeps a queue of frames to be encoded and distributes
+ * the work around threads and encoding servers.
*/
-class Encoder : public boost::noncopyable, public ExceptionStore
+class Encoder : public boost::noncopyable, public ExceptionStore, public boost::enable_shared_from_this<Encoder>
{
public:
- Encoder (boost::shared_ptr<const Film> f, boost::weak_ptr<Job>);
- virtual ~Encoder ();
+ Encoder (boost::shared_ptr<const Film>, boost::shared_ptr<Writer>);
+ ~Encoder ();
/** Called to indicate that a processing run is about to begin */
- void process_begin ();
-
- /** Call with a frame of video.
- * @param f Video frame.
- */
- void process_video (boost::shared_ptr<PlayerVideoFrame> f);
+ void begin ();
- /** Call with some audio data */
- void process_audio (boost::shared_ptr<const AudioBuffers>);
+ /** Called to pass a bit of video to be encoded as the next DCP frame */
+ void encode (boost::shared_ptr<PlayerVideo> f);
/** Called when a processing run has finished */
- void process_end ();
+ void end ();
float current_encoding_rate () const;
- int video_frames_out () const;
+ int video_frames_enqueued () const;
+
+ void servers_list_changed ();
private:
-
+
+ static void call_servers_list_changed (boost::weak_ptr<Encoder> encoder);
+
void frame_done ();
-
- void encoder_thread (boost::optional<ServerDescription>);
+
+ void encoder_thread (boost::optional<EncodeServerDescription>);
void terminate_threads ();
- void add_worker_threads (ServerDescription);
- void server_found (ServerDescription);
/** Film that we are encoding */
boost::shared_ptr<const Film> _film;
- boost::weak_ptr<Job> _job;
- /** Mutex for _time_history and _last_frame */
+ /** Mutex for _time_history */
mutable boost::mutex _state_mutex;
/** List of the times of completion of the last _history_size frames;
first is the most recently completed.
/** Number of frames that we should keep history for */
static int const _history_size;
- /** Number of video frames written for the DCP so far */
- int _video_frames_out;
-
- bool _terminate;
- std::list<boost::shared_ptr<DCPVideoFrame> > _queue;
+ /** Mutex for _threads */
+ mutable boost::mutex _threads_mutex;
std::list<boost::thread *> _threads;
- mutable boost::mutex _mutex;
- boost::condition _condition;
+ 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::signals2::scoped_connection _server_found_connection;
};
#endif