2 Copyright (C) 2013 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.
21 #include <boost/shared_ptr.hpp>
22 #include <boost/enable_shared_from_this.hpp>
23 #include "video_source.h"
24 #include "audio_source.h"
25 #include "video_sink.h"
26 #include "audio_sink.h"
27 #include "ffmpeg_content.h"
28 #include "audio_mapping.h"
33 class ImageMagickContent;
34 class ImageMagickDecoder;
41 * @brief A set of content files (video and audio), with knowledge of how they should be arranged into
44 * This class holds Content objects, and it knows how they should be arranged. At the moment
45 * the ordering is implicit; video content is placed sequentially, and audio content is taken
46 * from the video unless any sound-only files are present. If sound-only files exist, they
47 * are played simultaneously (i.e. they can be split up into multiple files for different channels)
54 Playlist (boost::shared_ptr<const Playlist>);
56 void as_xml (xmlpp::Node *);
57 void set_from_xml (boost::shared_ptr<const cxml::Node>);
59 void add (boost::shared_ptr<Content>);
60 void remove (boost::shared_ptr<Content>);
61 void move_earlier (boost::shared_ptr<Content>);
62 void move_later (boost::shared_ptr<Content>);
64 ContentAudioFrame audio_length () const;
65 int audio_channels () const;
66 int audio_frame_rate () const;
67 bool has_audio () const;
69 float video_frame_rate () const;
70 libdcp::Size video_size () const;
71 ContentVideoFrame video_length () const;
73 AudioMapping default_audio_mapping () const;
74 ContentVideoFrame content_length () const;
81 AudioFrom audio_from () const {
85 ContentList content () const {
89 boost::shared_ptr<FFmpegContent> ffmpeg () const;
91 std::list<boost::shared_ptr<const VideoContent> > video () const {
95 std::list<boost::shared_ptr<const AudioContent> > audio () const {
99 std::string audio_digest () const;
100 std::string video_digest () const;
106 void set_loop (int l);
108 mutable boost::signals2::signal<void ()> Changed;
109 mutable boost::signals2::signal<void (boost::weak_ptr<Content>, int)> ContentChanged;
113 void content_changed (boost::weak_ptr<Content>, int);
115 /** where we should get our audio from */
116 AudioFrom _audio_from;
118 /** all our content */
119 ContentList _content;
120 /** all our content which contains video */
121 std::list<boost::shared_ptr<const VideoContent> > _video;
122 /** all our content which contains audio. This may contain the same objects
123 * as _video for FFmpegContent.
125 std::list<boost::shared_ptr<const AudioContent> > _audio;
129 std::list<boost::signals2::connection> _content_connections;