2 Copyright (C) 2013-2014 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #ifndef DCPOMATIC_PLAYER_H
21 #define DCPOMATIC_PLAYER_H
24 #include <boost/shared_ptr.hpp>
25 #include <boost/enable_shared_from_this.hpp>
30 #include "audio_content.h"
31 #include "dcpomatic_time.h"
32 #include "content_subtitle.h"
33 #include "position_image.h"
44 class PlayerStatistics
73 void dump (boost::shared_ptr<Log>) const;
79 Piece (boost::shared_ptr<Content> c, boost::shared_ptr<Decoder> d, FrameRateChange f)
85 boost::shared_ptr<Content> content;
86 boost::shared_ptr<Decoder> decoder;
91 * @brief A class which can `play' a Playlist.
93 class Player : public boost::enable_shared_from_this<Player>, public boost::noncopyable
96 Player (boost::shared_ptr<const Film>, boost::shared_ptr<const Playlist>);
98 boost::shared_ptr<DCPVideo> get_video (DCPTime time, bool accurate);
99 boost::shared_ptr<AudioBuffers> get_audio (DCPTime time, DCPTime length, bool accurate);
101 void set_video_container_size (dcp::Size);
102 void set_approximate_size ();
103 void set_burn_subtitles (bool burn) {
104 _burn_subtitles = burn;
107 PlayerStatistics const & statistics () const;
109 /** Emitted when something has changed such that if we went back and emitted
110 * the last frame again it would look different. This is not emitted after
113 * The parameter is true if these signals are currently likely to be frequent.
115 boost::signals2::signal<void (bool)> Changed;
118 friend class PlayerWrapper;
121 void setup_pieces ();
122 void playlist_changed ();
123 void content_changed (boost::weak_ptr<Content>, int, bool);
125 void film_changed (Film::Property);
126 std::list<PositionImage> process_content_image_subtitles (
127 boost::shared_ptr<SubtitleContent>, std::list<boost::shared_ptr<ContentImageSubtitle> >
129 std::list<PositionImage> process_content_text_subtitles (std::list<boost::shared_ptr<ContentTextSubtitle> >);
130 void update_subtitle_from_text ();
131 VideoFrame dcp_to_content_video (boost::shared_ptr<const Piece> piece, DCPTime t) const;
132 AudioFrame dcp_to_content_audio (boost::shared_ptr<const Piece> piece, DCPTime t) const;
133 ContentTime dcp_to_content_subtitle (boost::shared_ptr<const Piece> piece, DCPTime t) const;
136 std::list<boost::shared_ptr<Piece> >
139 std::list<boost::shared_ptr<Piece> > overlaps;
140 for (typename std::list<boost::shared_ptr<Piece> >::const_iterator i = _pieces.begin(); i != _pieces.end(); ++i) {
141 if (boost::dynamic_pointer_cast<C> ((*i)->content) && (*i)->content->position() >= t && (*i)->content->end() < t) {
142 overlaps.push_back (*i);
149 boost::shared_ptr<const Film> _film;
150 boost::shared_ptr<const Playlist> _playlist;
152 /** Our pieces are ready to go; if this is false the pieces must be (re-)created before they are used */
153 bool _have_valid_pieces;
154 std::list<boost::shared_ptr<Piece> > _pieces;
156 dcp::Size _video_container_size;
157 boost::shared_ptr<Image> _black_image;
159 bool _approximate_size;
160 bool _burn_subtitles;
162 PlayerStatistics _statistics;
164 boost::signals2::scoped_connection _playlist_changed_connection;
165 boost::signals2::scoped_connection _playlist_content_changed_connection;
166 boost::signals2::scoped_connection _film_changed_connection;