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 std::shared_ptr;
56 using std::dynamic_pointer_cast;
58 using boost::shared_array;
59 using boost::optional;
62 InteropSubtitleAsset::InteropSubtitleAsset (boost::filesystem::path file)
63 : SubtitleAsset (file)
65 _raw_xml = dcp::file_to_string (file);
67 shared_ptr<cxml::Document> xml (new cxml::Document ("DCSubtitle"));
68 xml->read_file (file);
69 _id = xml->string_child ("SubtitleID");
70 _reel_number = xml->string_child ("ReelNumber");
71 _language = xml->string_child ("Language");
72 _movie_title = xml->string_child ("MovieTitle");
73 _load_font_nodes = type_children<InteropLoadFontNode> (xml, "LoadFont");
75 /* Now we need to drop down to xmlpp */
77 vector<ParseState> ps;
78 xmlpp::Node::NodeList c = xml->node()->get_children ();
79 for (xmlpp::Node::NodeList::const_iterator i = c.begin(); i != c.end(); ++i) {
80 xmlpp::Element const * e = dynamic_cast<xmlpp::Element const *> (*i);
81 if (e && (e->get_name() == "Font" || e->get_name() == "Subtitle")) {
82 parse_subtitles (e, ps, optional<int>(), INTEROP);
86 BOOST_FOREACH (shared_ptr<Subtitle> i, _subtitles) {
87 shared_ptr<SubtitleImage> si = dynamic_pointer_cast<SubtitleImage>(i);
89 si->read_png_file (file.parent_path() / String::compose("%1.png", si->id()));
94 InteropSubtitleAsset::InteropSubtitleAsset ()
100 InteropSubtitleAsset::xml_as_string () const
103 xmlpp::Element* root = doc.create_root_node ("DCSubtitle");
104 root->set_attribute ("Version", "1.0");
106 root->add_child("SubtitleID")->add_child_text (_id);
107 root->add_child("MovieTitle")->add_child_text (_movie_title);
108 root->add_child("ReelNumber")->add_child_text (raw_convert<string> (_reel_number));
109 root->add_child("Language")->add_child_text (_language);
111 for (auto i: _load_font_nodes) {
112 xmlpp::Element* load_font = root->add_child("LoadFont");
113 load_font->set_attribute ("Id", i->id);
114 load_font->set_attribute ("URI", i->uri);
117 subtitles_as_xml (root, 250, INTEROP);
119 return doc.write_to_string ("UTF-8");
123 InteropSubtitleAsset::add_font (string load_id, dcp::ArrayData data)
125 _fonts.push_back (Font(load_id, make_uuid(), data));
126 string const uri = String::compose("font_%1.ttf", _load_font_nodes.size());
127 _load_font_nodes.push_back (shared_ptr<InteropLoadFontNode>(new InteropLoadFontNode(load_id, uri)));
131 InteropSubtitleAsset::equals (shared_ptr<const Asset> other_asset, EqualityOptions options, NoteHandler note) const
133 if (!SubtitleAsset::equals (other_asset, options, note)) {
137 shared_ptr<const InteropSubtitleAsset> other = dynamic_pointer_cast<const InteropSubtitleAsset> (other_asset);
142 if (!options.load_font_nodes_can_differ) {
143 auto i = _load_font_nodes.begin();
144 auto j = other->_load_font_nodes.begin();
146 while (i != _load_font_nodes.end ()) {
147 if (j == other->_load_font_nodes.end ()) {
148 note (DCP_ERROR, "<LoadFont> nodes differ");
153 note (DCP_ERROR, "<LoadFont> nodes differ");
162 if (_movie_title != other->_movie_title) {
163 note (DCP_ERROR, "Subtitle movie titles differ");
170 vector<shared_ptr<LoadFontNode>>
171 InteropSubtitleAsset::load_font_nodes () const
173 vector<shared_ptr<LoadFontNode>> lf;
174 copy (_load_font_nodes.begin(), _load_font_nodes.end(), back_inserter (lf));
178 /** Write this content to an XML file with its fonts alongside */
180 InteropSubtitleAsset::write (boost::filesystem::path p) const
182 FILE* f = fopen_boost (p, "w");
184 throw FileError ("Could not open file for writing", p, -1);
187 string const s = xml_as_string ();
188 /* length() here gives bytes not characters */
189 fwrite (s.c_str(), 1, s.length(), f);
194 /* Image subtitles */
195 BOOST_FOREACH (shared_ptr<dcp::Subtitle> i, _subtitles) {
196 shared_ptr<dcp::SubtitleImage> im = dynamic_pointer_cast<dcp::SubtitleImage> (i);
198 im->write_png_file(p.parent_path() / String::compose("%1.png", im->id()));
203 BOOST_FOREACH (shared_ptr<InteropLoadFontNode> i, _load_font_nodes) {
204 boost::filesystem::path file = p.parent_path() / i->uri;
205 auto j = _fonts.begin();
206 while (j != _fonts.end() && j->load_id != i->id) {
209 if (j != _fonts.end ()) {
210 j->data.write (file);
216 /** Look at a supplied list of assets and find the fonts. Then match these
217 * fonts up with anything requested by a <LoadFont> so that _fonts contains
218 * a list of font ID, load ID and data.
221 InteropSubtitleAsset::resolve_fonts (vector<shared_ptr<Asset>> assets)
223 BOOST_FOREACH (shared_ptr<Asset> i, assets) {
224 shared_ptr<FontAsset> font = dynamic_pointer_cast<FontAsset> (i);
229 BOOST_FOREACH (shared_ptr<InteropLoadFontNode> j, _load_font_nodes) {
231 BOOST_FOREACH (Font const & k, _fonts) {
232 if (k.load_id == j->id) {
238 if (!got && font->file() && j->uri == font->file()->leaf().string()) {
239 _fonts.push_back (Font (j->id, i->id(), font->file().get()));
246 InteropSubtitleAsset::add_font_assets (vector<shared_ptr<Asset>>& assets)
248 BOOST_FOREACH (Font const & i, _fonts) {
250 assets.push_back (shared_ptr<FontAsset> (new FontAsset (i.uuid, i.file.get ())));
255 InteropSubtitleAsset::write_to_assetmap (xmlpp::Node* node, boost::filesystem::path root) const
257 Asset::write_to_assetmap (node, root);
259 BOOST_FOREACH (shared_ptr<dcp::Subtitle> i, _subtitles) {
260 shared_ptr<dcp::SubtitleImage> im = dynamic_pointer_cast<dcp::SubtitleImage> (i);
262 DCP_ASSERT (im->file());
263 write_file_to_assetmap (node, root, im->file().get(), im->id());
269 InteropSubtitleAsset::add_to_pkl (shared_ptr<PKL> pkl, boost::filesystem::path root) const
271 Asset::add_to_pkl (pkl, root);
273 BOOST_FOREACH (shared_ptr<dcp::Subtitle> i, _subtitles) {
274 shared_ptr<dcp::SubtitleImage> im = dynamic_pointer_cast<dcp::SubtitleImage> (i);
276 ArrayData png_image = im->png_image ();
277 pkl->add_asset (im->id(), optional<string>(), make_digest(png_image), png_image.size(), "image/png");
284 InteropSubtitleAsset::set_font_file (string load_id, boost::filesystem::path file)
286 BOOST_FOREACH (Font& i, _fonts) {
287 if (i.load_id == load_id) {
292 BOOST_FOREACH (shared_ptr<InteropLoadFontNode> i, _load_font_nodes) {
293 if (i->id == load_id) {
294 i->uri = file.filename().string();