/*
- Copyright (C) 2012-2014 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2021 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.
- */
-#include <boost/shared_ptr.hpp>
-#include <boost/thread/mutex.hpp>
-#include <boost/thread/condition.hpp>
-#include <boost/thread.hpp>
-#include <boost/optional.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"
-#include "exceptions.h"
-
-class Image;
-class AudioBuffers;
+#include "player.h"
+#include "player_text.h"
+#include <boost/signals2.hpp>
+
+
class Film;
-class ServerDescription;
-class DCPVideo;
-class EncodedData;
-class Writer;
+class Encoder;
+class Player;
class Job;
-class ServerFinder;
class PlayerVideo;
+class AudioBuffers;
+
/** @class Encoder
- * @brief Class to manage encoding to JPEG2000.
- *
- * This class keeps a queue of frames to be encoded and distributes
- * the work around threads and encoding servers.
+ * @brief Parent class for something that can encode a film into some format
*/
-
-class Encoder : public boost::noncopyable, public ExceptionStore
+class Encoder
{
public:
- Encoder (boost::shared_ptr<const Film> f, boost::weak_ptr<Job>, boost::shared_ptr<Writer>);
- virtual ~Encoder ();
-
- /** Called to indicate that a processing run is about to begin */
- void begin ();
-
- /** Call with a frame of video.
- * @param f Video frame.
- */
- void enqueue (boost::shared_ptr<PlayerVideo> f);
-
- /** Called when a processing run has finished */
- void end ();
-
- float current_encoding_rate () const;
- int video_frames_out () const;
-
-private:
-
- void frame_done ();
-
- void encoder_thread (boost::optional<ServerDescription>);
- 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 */
- mutable boost::mutex _state_mutex;
- /** List of the times of completion of the last _history_size frames;
- first is the most recently completed.
- */
- std::list<struct timeval> _time_history;
- /** 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<DCPVideo> > _queue;
- std::list<boost::thread *> _threads;
- mutable boost::mutex _mutex;
- /** 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;
+ Encoder (std::shared_ptr<const Film> film, std::weak_ptr<Job> job);
+ virtual ~Encoder () {}
+
+ Encoder (Encoder const&) = delete;
+ Encoder& operator= (Encoder const&) = delete;
+
+ virtual void go () = 0;
+
+ /** @return the current frame rate over the last short while */
+ virtual boost::optional<float> current_rate () const {
+ return {};
+ }
+
+ /** @return the number of frames that are done */
+ virtual Frame frames_done () const = 0;
+ virtual bool finishing () const = 0;
+ virtual void pause(void) {}
+ virtual void resume(void) {}
+
+protected:
+ std::shared_ptr<const Film> _film;
+ std::weak_ptr<Job> _job;
+ Player _player;
};
+
#endif