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.
20 #ifndef DCPOMATIC_PLAYLIST_H
21 #define DCPOMATIC_PLAYLIST_H
24 #include "frame_rate_change.h"
25 #include <libcxml/cxml.h>
26 #include <boost/shared_ptr.hpp>
27 #include <boost/signals2.hpp>
34 bool operator() (boost::shared_ptr<Content> a, boost::shared_ptr<Content> b);
38 * @brief A set of Content objects with knowledge of how they should be arranged into
41 class Playlist : public boost::noncopyable
47 void as_xml (xmlpp::Node *);
48 void set_from_xml (boost::shared_ptr<const Film>, cxml::ConstNodePtr, int, std::list<std::string> &);
50 void add (boost::shared_ptr<Content>);
51 void remove (boost::shared_ptr<Content>);
52 void remove (ContentList);
53 void move_earlier (boost::shared_ptr<Content>);
54 void move_later (boost::shared_ptr<Content>);
56 ContentList content () const;
58 std::string video_identifier () const;
60 DCPTime length () const;
61 boost::optional<DCPTime> start () const;
62 int64_t required_disk_space (int j2k_bandwidth, int audio_channels, int audio_frame_rate) const;
64 int best_dcp_frame_rate () const;
65 DCPTime video_end () const;
66 FrameRateChange active_frame_rate_change (DCPTime, int dcp_frame_rate) const;
68 void set_sequence_video (bool);
69 void maybe_sequence_video ();
71 void repeat (ContentList, int);
73 /** Emitted when content has been added to or removed from the playlist; implies OrderChanged */
74 mutable boost::signals2::signal<void ()> Changed;
75 mutable boost::signals2::signal<void ()> OrderChanged;
76 /** Emitted when something about a piece of our content has changed;
77 * these emissions include when the position of the content changes.
78 * Third parameter is true if signals are currently being emitted frequently.
80 mutable boost::signals2::signal<void (boost::weak_ptr<Content>, int, bool)> ContentChanged;
83 void content_changed (boost::weak_ptr<Content>, int, bool);
86 /** List of content. Kept sorted in position order. */
89 bool _sequencing_video;
90 std::list<boost::signals2::connection> _content_connections;