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/*
Copyright (C) 2013 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_CONTENT_H
#define DCPOMATIC_CONTENT_H
#include <set>
#include <boost/filesystem.hpp>
#include <boost/signals2.hpp>
#include <boost/thread/mutex.hpp>
#include <boost/enable_shared_from_this.hpp>
#include <libxml++/libxml++.h>
#include "types.h"
namespace cxml {
class Node;
}
class Job;
class Film;
class ContentProperty
{
public:
static int const PATH;
static int const POSITION;
static int const LENGTH;
static int const TRIM_START;
static int const TRIM_END;
};
class Content : public boost::enable_shared_from_this<Content>, public boost::noncopyable
{
public:
Content (boost::shared_ptr<const Film>);
Content (boost::shared_ptr<const Film>, Time);
Content (boost::shared_ptr<const Film>, boost::filesystem::path);
Content (boost::shared_ptr<const Film>, boost::shared_ptr<const cxml::Node>);
Content (boost::shared_ptr<const Film>, std::vector<boost::shared_ptr<Content> >);
virtual ~Content () {}
virtual void examine (boost::shared_ptr<Job>);
virtual std::string summary () const = 0;
/** @return Technical details of this content; these are written to logs to
* help with debugging.
*/
virtual std::string technical_summary () const;
virtual std::string information () const = 0;
virtual void as_xml (xmlpp::Node *) const;
virtual Time full_length () const = 0;
virtual std::string identifier () const;
boost::shared_ptr<Content> clone () const;
void set_path (boost::filesystem::path);
std::string path_summary () const;
std::vector<boost::filesystem::path> paths () const {
boost::mutex::scoped_lock lm (_mutex);
return _paths;
}
size_t number_of_paths () const {
boost::mutex::scoped_lock lm (_mutex);
return _paths.size ();
}
boost::filesystem::path path (size_t i) const {
boost::mutex::scoped_lock lm (_mutex);
return _paths[i];
}
bool paths_valid () const;
/** @return MD5 digest of the content's file(s) */
std::string digest () const {
boost::mutex::scoped_lock lm (_mutex);
return _digest;
}
void set_position (Time);
/** Time that this content starts; i.e. the time that the first
* bit of the content (trimmed or not) will happen.
*/
Time position () const {
boost::mutex::scoped_lock lm (_mutex);
return _position;
}
void set_trim_start (Time);
Time trim_start () const {
boost::mutex::scoped_lock lm (_mutex);
return _trim_start;
}
void set_trim_end (Time);
Time trim_end () const {
boost::mutex::scoped_lock lm (_mutex);
return _trim_end;
}
Time end () const {
return position() + length_after_trim() - 1;
}
Time length_after_trim () const;
void set_change_signals_frequent (bool f) {
_change_signals_frequent = f;
}
bool trimmed (Time) const;
boost::signals2::signal<void (boost::weak_ptr<Content>, int, bool)> Changed;
protected:
void signal_changed (int);
boost::weak_ptr<const Film> _film;
/** _mutex which should be used to protect accesses, as examine
jobs can update content state in threads other than the main one.
*/
mutable boost::mutex _mutex;
/** Paths of our data files */
std::vector<boost::filesystem::path> _paths;
private:
std::string _digest;
Time _position;
Time _trim_start;
Time _trim_end;
bool _change_signals_frequent;
};
#endif
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