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/*
Copyright (C) 2013-2016 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_PLAYLIST_H
#define DCPOMATIC_PLAYLIST_H
#include "util.h"
#include "frame_rate_change.h"
#include <libcxml/cxml.h>
#include <boost/shared_ptr.hpp>
#include <boost/signals2.hpp>
#include <list>
class Film;
struct ContentSorter
{
bool operator() (boost::shared_ptr<Content> a, boost::shared_ptr<Content> b);
};
/** @class Playlist
* @brief A set of Content objects with knowledge of how they should be arranged into
* a DCP.
*/
class Playlist : public boost::noncopyable
{
public:
Playlist ();
~Playlist ();
void as_xml (xmlpp::Node *);
void set_from_xml (boost::shared_ptr<const Film>, cxml::ConstNodePtr, int, std::list<std::string> &);
void add (boost::shared_ptr<Content>);
void remove (boost::shared_ptr<Content>);
void remove (ContentList);
void move_earlier (boost::shared_ptr<Content>);
void move_later (boost::shared_ptr<Content>);
ContentList content () const;
std::string video_identifier () const;
DCPTime length () const;
boost::optional<DCPTime> start () const;
int64_t required_disk_space (int j2k_bandwidth, int audio_channels, int audio_frame_rate) const;
int best_dcp_frame_rate () const;
DCPTime video_end () const;
DCPTime subtitle_end () const;
FrameRateChange active_frame_rate_change (DCPTime, int dcp_frame_rate) const;
void set_sequence (bool);
void maybe_sequence ();
void repeat (ContentList, int);
/** Emitted when content has been added to or removed from the playlist; implies OrderChanged */
mutable boost::signals2::signal<void ()> Changed;
mutable boost::signals2::signal<void ()> OrderChanged;
/** Emitted when something about a piece of our content has changed;
* these emissions include when the position of the content changes.
* Third parameter is true if signals are currently being emitted frequently.
*/
mutable boost::signals2::signal<void (boost::weak_ptr<Content>, int, bool)> ContentChanged;
private:
void content_changed (boost::weak_ptr<Content>, int, bool);
void reconnect ();
/** List of content. Kept sorted in position order. */
ContentList _content;
bool _sequence;
bool _sequencing;
std::list<boost::signals2::connection> _content_connections;
};
#endif
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