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_CONTENT_H
21 #define DCPOMATIC_CONTENT_H
24 #include <boost/filesystem.hpp>
25 #include <boost/signals2.hpp>
26 #include <boost/thread/mutex.hpp>
27 #include <boost/enable_shared_from_this.hpp>
28 #include <libxml++/libxml++.h>
41 static int const POSITION;
42 static int const LENGTH;
43 static int const TRIM_START;
44 static int const TRIM_END;
47 class Content : public boost::enable_shared_from_this<Content>, public boost::noncopyable
50 Content (boost::shared_ptr<const Film>, Time);
51 Content (boost::shared_ptr<const Film>, boost::filesystem::path);
52 Content (boost::shared_ptr<const Film>, boost::shared_ptr<const cxml::Node>);
53 virtual ~Content () {}
55 virtual void examine (boost::shared_ptr<Job>);
56 virtual std::string summary () const = 0;
57 virtual std::string technical_summary () const;
58 virtual std::string information () const = 0;
59 virtual void as_xml (xmlpp::Node *) const;
60 virtual Time full_length () const = 0;
62 boost::shared_ptr<Content> clone () const;
64 boost::filesystem::path path () const {
65 boost::mutex::scoped_lock lm (_mutex);
69 /** @return MD5 digest of the content's file(s) */
70 std::string digest () const {
71 boost::mutex::scoped_lock lm (_mutex);
75 void set_position (Time);
77 /** Time that this content starts; i.e. the time that the first
78 * bit of the content (trimmed or not) will happen.
80 Time position () const {
81 boost::mutex::scoped_lock lm (_mutex);
85 void set_trim_start (Time);
87 Time trim_start () const {
88 boost::mutex::scoped_lock lm (_mutex);
92 void set_trim_end (Time);
94 Time trim_end () const {
95 boost::mutex::scoped_lock lm (_mutex);
100 return position() + length_after_trim();
103 Time length_after_trim () const;
105 void set_change_signals_frequent (bool f) {
106 _change_signals_frequent = f;
109 bool trimmed (Time) const;
111 boost::signals2::signal<void (boost::weak_ptr<Content>, int, bool)> Changed;
114 void signal_changed (int);
116 boost::weak_ptr<const Film> _film;
118 /** _mutex which should be used to protect accesses, as examine
119 jobs can update content state in threads other than the main one.
121 mutable boost::mutex _mutex;
124 /** Path of a file or a directory containing files */
125 boost::filesystem::path _path;
130 bool _change_signals_frequent;