+/*
+ Copyright (C) 2024 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_VIDEO_ENCODER_H
+#define DCPOMATIC_VIDEO_ENCODER_H
+
+
+#include "dcpomatic_time.h"
+#include "event_history.h"
+#include "film.h"
+#include "player_video.h"
+
+
+class Writer;
+
+
+class VideoEncoder
+{
+public:
+ VideoEncoder(std::shared_ptr<const Film> film, Writer& writer);
+ virtual ~VideoEncoder() {}
+
+ VideoEncoder(VideoEncoder const&) = delete;
+ VideoEncoder& operator=(VideoEncoder const&) = delete;
+
+ /** Called to indicate that a processing run is about to begin */
+ virtual void begin() {}
+
+ /** Called to pass a bit of video to be encoded as the next DCP frame */
+ virtual void encode(std::shared_ptr<PlayerVideo> pv, dcpomatic::DCPTime time);
+
+ virtual void pause() = 0;
+ virtual void resume() = 0;
+
+ /** Called when a processing run has finished */
+ virtual void end() = 0;
+
+ int video_frames_enqueued() const;
+ boost::optional<float> current_encoding_rate() const;
+
+protected:
+ /** Film that we are encoding */
+ std::shared_ptr<const Film> _film;
+ Writer& _writer;
+ EventHistory _history;
+ boost::optional<dcpomatic::DCPTime> _last_player_video_time;
+};
+
+
+#endif
+