2 Copyright (C) 2012-2018 Carl Hetherington <cth@carlh.net>
4 This file is part of libdcp.
6 libdcp is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 libdcp is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with libdcp. If not, see <http://www.gnu.org/licenses/>.
19 In addition, as a special exception, the copyright holders give
20 permission to link the code of portions of this program with the
21 OpenSSL library under certain conditions as described in each
22 individual source file, and distribute linked combinations
25 You must obey the GNU General Public License in all respects
26 for all of the code used other than OpenSSL. If you modify
27 file(s) with this exception, you may extend this exception to your
28 version of the file(s), but you are not obligated to do so. If you
29 do not wish to do so, delete this exception statement from your
30 version. If you delete this exception statement from all source
31 files in the program, then also delete it here.
34 #include "interop_subtitle_asset.h"
35 #include "interop_load_font_node.h"
36 #include "subtitle_asset_internal.h"
38 #include "raw_convert.h"
40 #include "font_asset.h"
41 #include "dcp_assert.h"
42 #include "compose.hpp"
43 #include "subtitle_image.h"
44 #include <libxml++/libxml++.h>
45 #include <boost/foreach.hpp>
46 #include <boost/weak_ptr.hpp>
55 using boost::shared_ptr;
56 using boost::shared_array;
57 using boost::optional;
58 using boost::dynamic_pointer_cast;
61 InteropSubtitleAsset::InteropSubtitleAsset (boost::filesystem::path file)
62 : SubtitleAsset (file)
64 shared_ptr<cxml::Document> xml (new cxml::Document ("DCSubtitle"));
65 xml->read_file (file);
66 _id = xml->string_child ("SubtitleID");
67 _reel_number = xml->string_child ("ReelNumber");
68 _language = xml->string_child ("Language");
69 _movie_title = xml->string_child ("MovieTitle");
70 _load_font_nodes = type_children<InteropLoadFontNode> (xml, "LoadFont");
72 /* Now we need to drop down to xmlpp */
75 xmlpp::Node::NodeList c = xml->node()->get_children ();
76 for (xmlpp::Node::NodeList::const_iterator i = c.begin(); i != c.end(); ++i) {
77 xmlpp::Element const * e = dynamic_cast<xmlpp::Element const *> (*i);
78 if (e && (e->get_name() == "Font" || e->get_name() == "Subtitle")) {
79 parse_subtitles (e, ps, optional<int>(), INTEROP);
83 /* XXX: now find SubtitleImages in _subtitles and load their PNG */
86 InteropSubtitleAsset::InteropSubtitleAsset ()
92 InteropSubtitleAsset::xml_as_string () const
95 xmlpp::Element* root = doc.create_root_node ("DCSubtitle");
96 root->set_attribute ("Version", "1.0");
98 root->add_child("SubtitleID")->add_child_text (_id);
99 root->add_child("MovieTitle")->add_child_text (_movie_title);
100 root->add_child("ReelNumber")->add_child_text (raw_convert<string> (_reel_number));
101 root->add_child("Language")->add_child_text (_language);
103 for (list<shared_ptr<InteropLoadFontNode> >::const_iterator i = _load_font_nodes.begin(); i != _load_font_nodes.end(); ++i) {
104 xmlpp::Element* load_font = root->add_child("LoadFont");
105 load_font->set_attribute ("Id", (*i)->id);
106 load_font->set_attribute ("URI", (*i)->uri);
109 subtitles_as_xml (root, 250, INTEROP);
111 return doc.write_to_string ("UTF-8");
115 InteropSubtitleAsset::add_font (string load_id, boost::filesystem::path file)
117 _fonts.push_back (Font (load_id, make_uuid(), file));
118 _load_font_nodes.push_back (shared_ptr<InteropLoadFontNode> (new InteropLoadFontNode (load_id, file.leaf().string ())));
122 InteropSubtitleAsset::equals (shared_ptr<const Asset> other_asset, EqualityOptions options, NoteHandler note) const
124 if (!SubtitleAsset::equals (other_asset, options, note)) {
128 shared_ptr<const InteropSubtitleAsset> other = dynamic_pointer_cast<const InteropSubtitleAsset> (other_asset);
133 list<shared_ptr<InteropLoadFontNode> >::const_iterator i = _load_font_nodes.begin ();
134 list<shared_ptr<InteropLoadFontNode> >::const_iterator j = other->_load_font_nodes.begin ();
136 while (i != _load_font_nodes.end ()) {
137 if (j == other->_load_font_nodes.end ()) {
138 note (DCP_ERROR, "<LoadFont> nodes differ");
143 note (DCP_ERROR, "<LoadFont> nodes differ");
151 if (_movie_title != other->_movie_title) {
152 note (DCP_ERROR, "Subtitle movie titles differ");
159 list<shared_ptr<LoadFontNode> >
160 InteropSubtitleAsset::load_font_nodes () const
162 list<shared_ptr<LoadFontNode> > lf;
163 copy (_load_font_nodes.begin(), _load_font_nodes.end(), back_inserter (lf));
167 /** Write this content to an XML file with its fonts alongside */
169 InteropSubtitleAsset::write (boost::filesystem::path p) const
171 FILE* f = fopen_boost (p, "w");
173 throw FileError ("Could not open file for writing", p, -1);
176 string const s = xml_as_string ();
177 /* length() here gives bytes not characters */
178 fwrite (s.c_str(), 1, s.length(), f);
183 /* Image subtitles */
184 BOOST_FOREACH (shared_ptr<dcp::Subtitle> i, _subtitles) {
185 shared_ptr<dcp::SubtitleImage> im = dynamic_pointer_cast<dcp::SubtitleImage> (i);
187 im->png_image().write (p.parent_path() / String::compose("%1.png", im->id()));
192 BOOST_FOREACH (shared_ptr<InteropLoadFontNode> i, _load_font_nodes) {
193 boost::filesystem::path file = p.parent_path() / i->uri;
194 FILE* f = fopen_boost (file, "wb");
196 throw FileError ("could not open font file for writing", file, errno);
198 list<Font>::const_iterator j = _fonts.begin ();
199 while (j != _fonts.end() && j->load_id != i->id) {
202 if (j != _fonts.end ()) {
203 fwrite (j->data.data().get(), 1, j->data.size(), f);
210 /** Look at a supplied list of assets and find the fonts. Then match these
211 * fonts up with anything requested by a <LoadFont> so that _fonts contains
212 * a list of font ID, load ID and data.
215 InteropSubtitleAsset::resolve_fonts (list<shared_ptr<Asset> > assets)
217 BOOST_FOREACH (shared_ptr<Asset> i, assets) {
218 shared_ptr<FontAsset> font = dynamic_pointer_cast<FontAsset> (i);
223 BOOST_FOREACH (shared_ptr<InteropLoadFontNode> j, _load_font_nodes) {
225 BOOST_FOREACH (Font const & k, _fonts) {
226 if (k.load_id == j->id) {
232 if (!got && font->file() && j->uri == font->file()->leaf().string()) {
233 _fonts.push_back (Font (j->id, i->id(), font->file().get()));
240 InteropSubtitleAsset::add_font_assets (list<shared_ptr<Asset> >& assets)
242 BOOST_FOREACH (Font const & i, _fonts) {
244 assets.push_back (shared_ptr<FontAsset> (new FontAsset (i.uuid, i.file.get ())));