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 _raw_xml = dcp::file_to_string (file);
66 shared_ptr<cxml::Document> xml (new cxml::Document ("DCSubtitle"));
67 xml->read_file (file);
68 _id = xml->string_child ("SubtitleID");
69 _reel_number = xml->string_child ("ReelNumber");
70 _language = xml->string_child ("Language");
71 _movie_title = xml->string_child ("MovieTitle");
72 _load_font_nodes = type_children<InteropLoadFontNode> (xml, "LoadFont");
74 /* Now we need to drop down to xmlpp */
77 xmlpp::Node::NodeList c = xml->node()->get_children ();
78 for (xmlpp::Node::NodeList::const_iterator i = c.begin(); i != c.end(); ++i) {
79 xmlpp::Element const * e = dynamic_cast<xmlpp::Element const *> (*i);
80 if (e && (e->get_name() == "Font" || e->get_name() == "Subtitle")) {
81 parse_subtitles (e, ps, optional<int>(), INTEROP);
85 BOOST_FOREACH (shared_ptr<Subtitle> i, _subtitles) {
86 shared_ptr<SubtitleImage> si = dynamic_pointer_cast<SubtitleImage>(i);
88 si->read_png_file (file.parent_path() / String::compose("%1.png", si->id()));
93 InteropSubtitleAsset::InteropSubtitleAsset ()
99 InteropSubtitleAsset::xml_as_string () const
102 xmlpp::Element* root = doc.create_root_node ("DCSubtitle");
103 root->set_attribute ("Version", "1.0");
105 root->add_child("SubtitleID")->add_child_text (_id);
106 root->add_child("MovieTitle")->add_child_text (_movie_title);
107 root->add_child("ReelNumber")->add_child_text (raw_convert<string> (_reel_number));
108 root->add_child("Language")->add_child_text (_language);
110 for (list<shared_ptr<InteropLoadFontNode> >::const_iterator i = _load_font_nodes.begin(); i != _load_font_nodes.end(); ++i) {
111 xmlpp::Element* load_font = root->add_child("LoadFont");
112 load_font->set_attribute ("Id", (*i)->id);
113 load_font->set_attribute ("URI", (*i)->uri);
116 subtitles_as_xml (root, 250, INTEROP);
118 return doc.write_to_string ("UTF-8");
122 InteropSubtitleAsset::add_font (string load_id, boost::filesystem::path file)
124 _fonts.push_back (Font (load_id, make_uuid(), file));
125 _load_font_nodes.push_back (shared_ptr<InteropLoadFontNode> (new InteropLoadFontNode (load_id, file.leaf().string ())));
129 InteropSubtitleAsset::equals (shared_ptr<const Asset> other_asset, EqualityOptions options, NoteHandler note) const
131 if (!SubtitleAsset::equals (other_asset, options, note)) {
135 shared_ptr<const InteropSubtitleAsset> other = dynamic_pointer_cast<const InteropSubtitleAsset> (other_asset);
140 list<shared_ptr<InteropLoadFontNode> >::const_iterator i = _load_font_nodes.begin ();
141 list<shared_ptr<InteropLoadFontNode> >::const_iterator j = other->_load_font_nodes.begin ();
143 while (i != _load_font_nodes.end ()) {
144 if (j == other->_load_font_nodes.end ()) {
145 note (DCP_ERROR, "<LoadFont> nodes differ");
150 note (DCP_ERROR, "<LoadFont> nodes differ");
158 if (_movie_title != other->_movie_title) {
159 note (DCP_ERROR, "Subtitle movie titles differ");
166 list<shared_ptr<LoadFontNode> >
167 InteropSubtitleAsset::load_font_nodes () const
169 list<shared_ptr<LoadFontNode> > lf;
170 copy (_load_font_nodes.begin(), _load_font_nodes.end(), back_inserter (lf));
174 /** Write this content to an XML file with its fonts alongside */
176 InteropSubtitleAsset::write (boost::filesystem::path p) const
178 FILE* f = fopen_boost (p, "w");
180 throw FileError ("Could not open file for writing", p, -1);
183 string const s = xml_as_string ();
184 /* length() here gives bytes not characters */
185 fwrite (s.c_str(), 1, s.length(), f);
190 /* Image subtitles */
191 BOOST_FOREACH (shared_ptr<dcp::Subtitle> i, _subtitles) {
192 shared_ptr<dcp::SubtitleImage> im = dynamic_pointer_cast<dcp::SubtitleImage> (i);
194 im->write_png_file(p.parent_path() / String::compose("%1.png", im->id()));
199 BOOST_FOREACH (shared_ptr<InteropLoadFontNode> i, _load_font_nodes) {
200 boost::filesystem::path file = p.parent_path() / i->uri;
201 FILE* f = fopen_boost (file, "wb");
203 throw FileError ("could not open font file for writing", file, errno);
205 list<Font>::const_iterator j = _fonts.begin ();
206 while (j != _fonts.end() && j->load_id != i->id) {
209 if (j != _fonts.end ()) {
210 fwrite (j->data.data().get(), 1, j->data.size(), f);
217 /** Look at a supplied list of assets and find the fonts. Then match these
218 * fonts up with anything requested by a <LoadFont> so that _fonts contains
219 * a list of font ID, load ID and data.
222 InteropSubtitleAsset::resolve_fonts (list<shared_ptr<Asset> > assets)
224 BOOST_FOREACH (shared_ptr<Asset> i, assets) {
225 shared_ptr<FontAsset> font = dynamic_pointer_cast<FontAsset> (i);
230 BOOST_FOREACH (shared_ptr<InteropLoadFontNode> j, _load_font_nodes) {
232 BOOST_FOREACH (Font const & k, _fonts) {
233 if (k.load_id == j->id) {
239 if (!got && font->file() && j->uri == font->file()->leaf().string()) {
240 _fonts.push_back (Font (j->id, i->id(), font->file().get()));
247 InteropSubtitleAsset::add_font_assets (list<shared_ptr<Asset> >& assets)
249 BOOST_FOREACH (Font const & i, _fonts) {
251 assets.push_back (shared_ptr<FontAsset> (new FontAsset (i.uuid, i.file.get ())));
256 InteropSubtitleAsset::write_to_assetmap (xmlpp::Node* node, boost::filesystem::path root) const
258 Asset::write_to_assetmap (node, root);
260 BOOST_FOREACH (shared_ptr<dcp::Subtitle> i, _subtitles) {
261 shared_ptr<dcp::SubtitleImage> im = dynamic_pointer_cast<dcp::SubtitleImage> (i);
263 DCP_ASSERT (im->file());
264 write_file_to_assetmap (node, root, im->file().get(), im->id());
270 InteropSubtitleAsset::add_to_pkl (shared_ptr<PKL> pkl, boost::filesystem::path root) const
272 Asset::add_to_pkl (pkl, root);
274 BOOST_FOREACH (shared_ptr<dcp::Subtitle> i, _subtitles) {
275 shared_ptr<dcp::SubtitleImage> im = dynamic_pointer_cast<dcp::SubtitleImage> (i);
277 Data png_image = im->png_image ();
278 pkl->add_asset (im->id(), optional<string>(), make_digest(png_image), png_image.size(), "image/png");