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 #include <boost/thread/mutex.hpp>
21 #include <libxml++/libxml++.h>
22 #include <libcxml/cxml.h>
25 #include "content_factory.h"
26 #include "ui_signaller.h"
27 #include "exceptions.h"
33 using std::stringstream;
38 using boost::shared_ptr;
39 using boost::lexical_cast;
41 int const ContentProperty::PATH = 400;
42 int const ContentProperty::POSITION = 401;
43 int const ContentProperty::LENGTH = 402;
44 int const ContentProperty::TRIM_START = 403;
45 int const ContentProperty::TRIM_END = 404;
47 Content::Content (shared_ptr<const Film> f)
52 , _change_signals_frequent (false)
57 Content::Content (shared_ptr<const Film> f, DCPTime p)
62 , _change_signals_frequent (false)
67 Content::Content (shared_ptr<const Film> f, boost::filesystem::path p)
72 , _change_signals_frequent (false)
77 Content::Content (shared_ptr<const Film> f, shared_ptr<const cxml::Node> node)
79 , _change_signals_frequent (false)
81 list<cxml::NodePtr> path_children = node->node_children ("Path");
82 for (list<cxml::NodePtr>::const_iterator i = path_children.begin(); i != path_children.end(); ++i) {
83 _paths.push_back ((*i)->content ());
85 _digest = node->string_child ("Digest");
86 _position = DCPTime (node->number_child<double> ("Position"));
87 _trim_start = DCPTime (node->number_child<double> ("TrimStart"));
88 _trim_end = DCPTime (node->number_child<double> ("TrimEnd"));
91 Content::Content (shared_ptr<const Film> f, vector<shared_ptr<Content> > c)
93 , _position (c.front()->position ())
94 , _trim_start (c.front()->trim_start ())
95 , _trim_end (c.back()->trim_end ())
96 , _change_signals_frequent (false)
98 for (size_t i = 0; i < c.size(); ++i) {
99 if (i > 0 && c[i]->trim_start ()) {
100 throw JoinError (_("Only the first piece of content to be joined can have a start trim."));
103 if (i < (c.size() - 1) && c[i]->trim_end ()) {
104 throw JoinError (_("Only the last piece of content to be joined can have an end trim."));
107 for (size_t j = 0; j < c[i]->number_of_paths(); ++j) {
108 _paths.push_back (c[i]->path (j));
114 Content::as_xml (xmlpp::Node* node) const
116 boost::mutex::scoped_lock lm (_mutex);
118 for (vector<boost::filesystem::path>::const_iterator i = _paths.begin(); i != _paths.end(); ++i) {
119 node->add_child("Path")->add_child_text (i->string ());
121 node->add_child("Digest")->add_child_text (_digest);
122 node->add_child("Position")->add_child_text (lexical_cast<string> (_position.get ()));
123 node->add_child("TrimStart")->add_child_text (lexical_cast<string> (_trim_start.get ()));
124 node->add_child("TrimEnd")->add_child_text (lexical_cast<string> (_trim_end.get ()));
128 Content::examine (shared_ptr<Job> job)
130 boost::mutex::scoped_lock lm (_mutex);
131 vector<boost::filesystem::path> p = _paths;
134 string const d = md5_digest (p, job);
141 Content::signal_changed (int p)
144 ui_signaller->emit (boost::bind (boost::ref (Changed), shared_from_this (), p, _change_signals_frequent));
149 Content::set_position (DCPTime p)
152 boost::mutex::scoped_lock lm (_mutex);
153 if (p == _position) {
160 signal_changed (ContentProperty::POSITION);
164 Content::set_trim_start (DCPTime t)
167 boost::mutex::scoped_lock lm (_mutex);
171 signal_changed (ContentProperty::TRIM_START);
175 Content::set_trim_end (DCPTime t)
178 boost::mutex::scoped_lock lm (_mutex);
182 signal_changed (ContentProperty::TRIM_END);
187 Content::clone () const
189 shared_ptr<const Film> film = _film.lock ();
191 return shared_ptr<Content> ();
194 /* This is a bit naughty, but I can't think of a compelling reason not to do it ... */
196 xmlpp::Node* node = doc.create_root_node ("Content");
198 return content_factory (film, cxml::NodePtr (new cxml::Node (node)), Film::current_state_version);
202 Content::technical_summary () const
204 return String::compose ("%1 %2 %3", path_summary(), digest(), position());
208 Content::length_after_trim () const
210 return full_length() - trim_start() - trim_end();
213 /** @return string which includes everything about how this content affects
217 Content::identifier () const
221 s << Content::digest()
223 << "_" << trim_start()
224 << "_" << trim_end();
230 Content::paths_valid () const
232 for (vector<boost::filesystem::path>::const_iterator i = _paths.begin(); i != _paths.end(); ++i) {
233 if (!boost::filesystem::exists (*i)) {
242 Content::set_path (boost::filesystem::path path)
245 _paths.push_back (path);
246 signal_changed (ContentProperty::PATH);
250 Content::path_summary () const
252 /* XXX: should handle multiple paths more gracefully */
254 assert (number_of_paths ());
256 string s = path(0).filename().string ();
257 if (number_of_paths() > 1) {