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/*
Copyright (C) 2013-2021 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
DCP-o-matic 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.
DCP-o-matic 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 DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef DCPOMATIC_PLAYLIST_H
#define DCPOMATIC_PLAYLIST_H
#include "change_signaller.h"
#include "dcpomatic_time.h"
#include "frame_rate_change.h"
#include "path_behaviour.h"
#include "signal.h"
#include "types.h"
#include <libcxml/cxml.h>
#include <boost/signals2.hpp>
#include <boost/thread.hpp>
#include <list>
class Film;
/** @class Playlist
* @brief A set of Content objects with knowledge of how they should be arranged into
* a DCP.
*/
class Playlist
{
public:
Playlist() = default;
~Playlist();
Playlist(Playlist const&) = delete;
Playlist& operator=(Playlist const&) = delete;
void as_xml(xmlpp::Element*, bool with_content_paths, PathBehaviour path_behaviour, boost::optional<boost::filesystem::path> film_directory);
void set_from_xml(std::shared_ptr<const Film> film, cxml::ConstNodePtr node, int version, std::list<std::string>& notes);
void add(std::shared_ptr<const Film> film, std::shared_ptr<Content>);
void add_at_end(std::shared_ptr<const Film> film, std::vector<std::shared_ptr<Content>> const& content);
void remove(std::shared_ptr<Content>);
void remove(ContentList);
void move_earlier(std::shared_ptr<const Film> film, std::shared_ptr<Content>);
void move_later(std::shared_ptr<const Film> film, std::shared_ptr<Content>);
ContentList content() const;
std::string video_identifier() const;
dcpomatic::DCPTime length(std::shared_ptr<const Film> film) const;
boost::optional<dcpomatic::DCPTime> start() const;
int64_t required_disk_space(std::shared_ptr<const Film> film, int64_t video_bit_rate, int audio_channels, int audio_frame_rate) const;
int best_video_frame_rate() const;
dcpomatic::DCPTime video_end(std::shared_ptr<const Film> film) const;
dcpomatic::DCPTime text_end(std::shared_ptr<const Film> film) const;
FrameRateChange active_frame_rate_change(dcpomatic::DCPTime, int dcp_frame_rate) const;
std::string content_summary(std::shared_ptr<const Film> film, dcpomatic::DCPTimePeriod period) const;
std::pair<double, double> speed_up_range(int dcp_video_frame_rate) const;
void set_sequence(bool);
void maybe_sequence(std::shared_ptr<const Film> film);
void repeat(std::shared_ptr<const Film> film, ContentList, int);
/** Emitted when content has been added to or removed from the playlist; implies OrderChange */
mutable boost::signals2::signal<void (ChangeType)> Change;
mutable boost::signals2::signal<void ()> OrderChange;
/** Emitted when the length might have changed; may sometimes be emitted when it has not */
mutable boost::signals2::signal<void ()> LengthChange;
mutable boost::signals2::signal<void (ChangeType, int, bool)> ContentChange;
private:
void content_change(std::weak_ptr<const Film>, ChangeType, int, bool);
void disconnect();
void reconnect(std::shared_ptr<const Film> film);
mutable boost::mutex _mutex;
/** List of content, kept sorted by ContentSorter() */
ContentList _content;
bool _sequence = true;
bool _sequencing = false;
std::list<Connection> _content_connections;
};
#endif
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