1 files changed, 146 insertions, 0 deletions
diff --git a/src/lib/player.h b/src/lib/player.h
new file mode 100644
index 000000000..2261f66ea
--- /dev/null
+++ b/src/lib/player.h
@@ -0,0 +1,146 @@
+/*
+    Copyright (C) 2013 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.
+
+*/
+
+#ifndef DCPOMATIC_PLAYER_H
+#define DCPOMATIC_PLAYER_H
+
+#include <list>
+#include <boost/shared_ptr.hpp>
+#include <boost/enable_shared_from_this.hpp>
+#include "playlist.h"
+#include "content.h"
+#include "film.h"
+#include "rect.h"
+#include "audio_merger.h"
+#include "audio_content.h"
+
+class Job;
+class Film;
+class Playlist;
+class AudioContent;
+class Piece;
+class Image;
+class Resampler;
+
+/** @class Player
+ *  @brief A class which can `play' a Playlist; emitting its audio and video.
+ */
+ 
+class Player : public boost::enable_shared_from_this<Player>, public boost::noncopyable
+{
+public:
+	Player (boost::shared_ptr<const Film>, boost::shared_ptr<const Playlist>);
+
+	void disable_video ();
+	void disable_audio ();
+
+	bool pass ();
+	void seek (Time, bool);
+
+	Time video_position () const {
+		return _video_position;
+	}
+
+	void set_video_container_size (libdcp::Size);
+
+	/** Emitted when a video frame is ready.
+	 *  First parameter is the video image.
+	 *  Second parameter is the eye(s) that should see this image.
+	 *  Third parameter is the colour conversion that should be used for this image.
+	 *  Fourth parameter is true if the image is the same as the last one that was emitted.
+	 *  Fifth parameter is the time.
+	 */
+	boost::signals2::signal<void (boost::shared_ptr<const Image>, Eyes, ColourConversion, bool, Time)> Video;
+	
+	/** Emitted when some audio data is ready */
+	boost::signals2::signal<void (boost::shared_ptr<const AudioBuffers>, Time)> Audio;
+
+	/** Emitted when something has changed such that if we went back and emitted
+	 *  the last frame again it would look different.  This is not emitted after
+	 *  a seek.
+	 *
+	 *  The parameter is true if these signals are currently likely to be frequent.
+	 */
+	boost::signals2::signal<void (bool)> Changed;
+
+private:
+	friend class PlayerWrapper;
+
+	void process_video (boost::weak_ptr<Piece>, boost::shared_ptr<const Image>, Eyes, bool, VideoContent::Frame);
+	void process_audio (boost::weak_ptr<Piece>, boost::shared_ptr<const AudioBuffers>, AudioContent::Frame);
+	void process_subtitle (boost::weak_ptr<Piece>, boost::shared_ptr<Image>, dcpomatic::Rect<double>, Time, Time);
+	void setup_pieces ();
+	void playlist_changed ();
+	void content_changed (boost::weak_ptr<Content>, int, bool);
+	void do_seek (Time, bool);
+	void flush ();
+	void emit_black ();
+	void emit_silence (OutputAudioFrame);
+	boost::shared_ptr<Resampler> resampler (boost::shared_ptr<AudioContent>, bool);
+	void film_changed (Film::Property);
+	void update_subtitle ();
+
+	boost::shared_ptr<const Film> _film;
+	boost::shared_ptr<const Playlist> _playlist;
+	
+	bool _video;
+	bool _audio;
+
+	/** Our pieces are ready to go; if this is false the pieces must be (re-)created before they are used */
+	bool _have_valid_pieces;
+	std::list<boost::shared_ptr<Piece> > _pieces;
+
+	/** The time after the last video that we emitted */
+	Time _video_position;
+	/** The time after the last audio that we emitted */
+	Time _audio_position;
+
+	AudioMerger<Time, AudioContent::Frame> _audio_merger;
+
+	libdcp::Size _video_container_size;
+	boost::shared_ptr<Image> _black_frame;
+	std::map<boost::shared_ptr<AudioContent>, boost::shared_ptr<Resampler> > _resamplers;
+
+	struct {
+		boost::weak_ptr<Piece> piece;
+		boost::shared_ptr<Image> image;
+		dcpomatic::Rect<double> rect;
+		Time from;
+		Time to;
+	} _in_subtitle;
+
+	struct {
+		boost::shared_ptr<Image> image;
+		Position<int> position;
+		Time from;
+		Time to;
+	} _out_subtitle;
+
+#ifdef DCPOMATIC_DEBUG
+	boost::shared_ptr<Content> _last_video;
+#endif
+
+	bool _last_emit_was_black;
+
+	boost::signals2::scoped_connection _playlist_changed_connection;
+	boost::signals2::scoped_connection _playlist_content_changed_connection;
+	boost::signals2::scoped_connection _film_changed_connection;
+};
+
+#endif