--- /dev/null
+/*
+ Copyright (C) 2012-2021 Carl Hetherington <cth@carlh.net>
+
+ This file is part of libdcp.
+
+ libdcp is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ libdcp is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with libdcp. If not, see <http://www.gnu.org/licenses/>.
+
+ In addition, as a special exception, the copyright holders give
+ permission to link the code of portions of this program with the
+ OpenSSL library under certain conditions as described in each
+ individual source file, and distribute linked combinations
+ including the two.
+
+ You must obey the GNU General Public License in all respects
+ for all of the code used other than OpenSSL. If you modify
+ file(s) with this exception, you may extend this exception to your
+ version of the file(s), but you are not obligated to do so. If you
+ do not wish to do so, delete this exception statement from your
+ version. If you delete this exception statement from all source
+ files in the program, then also delete it here.
+*/
+
+
+/** @file src/interop_subtitle_asset.cc
+ * @brief InteropTextAsset class
+ */
+
+
+#include "compose.hpp"
+#include "dcp_assert.h"
+#include "equality_options.h"
+#include "filesystem.h"
+#include "font_asset.h"
+#include "file.h"
+#include "interop_load_font_node.h"
+#include "interop_text_asset.h"
+#include "raw_convert.h"
+#include "subtitle_image.h"
+#include "text_asset_internal.h"
+#include "util.h"
+#include "warnings.h"
+#include "xml.h"
+LIBDCP_DISABLE_WARNINGS
+#include <libxml++/libxml++.h>
+LIBDCP_ENABLE_WARNINGS
+#include <boost/weak_ptr.hpp>
+#include <cmath>
+#include <cstdio>
+
+
+using std::cerr;
+using std::cout;
+using std::dynamic_pointer_cast;
+using std::make_shared;
+using std::shared_ptr;
+using std::string;
+using std::vector;
+using boost::optional;
+using namespace dcp;
+
+
+InteropTextAsset::InteropTextAsset(boost::filesystem::path file)
+ : TextAsset(file)
+{
+ _raw_xml = dcp::file_to_string (file);
+
+ auto xml = make_shared<cxml::Document>("DCSubtitle");
+ xml->read_file(dcp::filesystem::fix_long_path(file));
+ _id = xml->string_child ("SubtitleID");
+ _reel_number = xml->string_child ("ReelNumber");
+ _language = xml->string_child ("Language");
+ _movie_title = xml->string_child ("MovieTitle");
+ _load_font_nodes = type_children<InteropLoadFontNode> (xml, "LoadFont");
+
+ /* Now we need to drop down to xmlpp */
+
+ vector<ParseState> ps;
+ for (auto i: xml->node()->get_children()) {
+ auto e = dynamic_cast<xmlpp::Element const *>(i);
+ if (e && (e->get_name() == "Font" || e->get_name() == "Subtitle")) {
+ parse_texts(e, ps, optional<int>(), Standard::INTEROP);
+ }
+ }
+
+ for (auto i: _texts) {
+ auto si = dynamic_pointer_cast<SubtitleImage>(i);
+ if (si) {
+ si->read_png_file (file.parent_path() / String::compose("%1.png", si->id()));
+ }
+ }
+}
+
+
+string
+InteropTextAsset::xml_as_string() const
+{
+ xmlpp::Document doc;
+ auto root = doc.create_root_node ("DCSubtitle");
+ root->set_attribute ("Version", "1.0");
+
+ root->add_child("SubtitleID")->add_child_text (_id);
+ root->add_child("MovieTitle")->add_child_text (_movie_title);
+ root->add_child("ReelNumber")->add_child_text (raw_convert<string> (_reel_number));
+ root->add_child("Language")->add_child_text (_language);
+
+ for (auto i: _load_font_nodes) {
+ auto load_font = root->add_child("LoadFont");
+ load_font->set_attribute ("Id", i->id);
+ load_font->set_attribute ("URI", i->uri);
+ }
+
+ texts_as_xml(root, 250, Standard::INTEROP);
+
+ return format_xml(doc, {});
+}
+
+
+void
+InteropTextAsset::add_font(string load_id, dcp::ArrayData data)
+{
+ _fonts.push_back (Font(load_id, make_uuid(), data));
+ auto const uri = String::compose("font_%1.ttf", _load_font_nodes.size());
+ _load_font_nodes.push_back (make_shared<InteropLoadFontNode>(load_id, uri));
+}
+
+
+bool
+InteropTextAsset::equals(shared_ptr<const Asset> other_asset, EqualityOptions const& options, NoteHandler note) const
+{
+ if (!TextAsset::equals(other_asset, options, note)) {
+ return false;
+ }
+
+ auto other = dynamic_pointer_cast<const InteropTextAsset>(other_asset);
+ if (!other) {
+ return false;
+ }
+
+ if (!options.load_font_nodes_can_differ) {
+ auto i = _load_font_nodes.begin();
+ auto j = other->_load_font_nodes.begin();
+
+ while (i != _load_font_nodes.end ()) {
+ if (j == other->_load_font_nodes.end ()) {
+ note (NoteType::ERROR, "<LoadFont> nodes differ");
+ return false;
+ }
+
+ if (**i != **j) {
+ note (NoteType::ERROR, "<LoadFont> nodes differ");
+ return false;
+ }
+
+ ++i;
+ ++j;
+ }
+ }
+
+ if (_movie_title != other->_movie_title) {
+ note (NoteType::ERROR, "Subtitle or closed caption movie titles differ");
+ return false;
+ }
+
+ return true;
+}
+
+
+vector<shared_ptr<LoadFontNode>>
+InteropTextAsset::load_font_nodes() const
+{
+ vector<shared_ptr<LoadFontNode>> lf;
+ copy (_load_font_nodes.begin(), _load_font_nodes.end(), back_inserter (lf));
+ return lf;
+}
+
+
+void
+InteropTextAsset::write(boost::filesystem::path p) const
+{
+ File f(p, "wb");
+ if (!f) {
+ throw FileError ("Could not open file for writing", p, -1);
+ }
+
+ _raw_xml = xml_as_string ();
+ /* length() here gives bytes not characters */
+ f.write(_raw_xml->c_str(), 1, _raw_xml->length());
+
+ _file = p;
+
+ /* Image subtitles */
+ for (auto i: _texts) {
+ auto im = dynamic_pointer_cast<dcp::SubtitleImage> (i);
+ if (im) {
+ im->write_png_file(p.parent_path() / String::compose("%1.png", im->id()));
+ }
+ }
+
+ /* Fonts */
+ for (auto i: _load_font_nodes) {
+ auto file = p.parent_path() / i->uri;
+ auto font_with_id = std::find_if(_fonts.begin(), _fonts.end(), [i](Font const& font) { return font.load_id == i->id; });
+ if (font_with_id != _fonts.end()) {
+ font_with_id->data.write(file);
+ font_with_id->file = file;
+ }
+ }
+}
+
+
+/** Look at a supplied list of assets and find the fonts. Then match these
+ * fonts up with anything requested by a <LoadFont> so that _fonts contains
+ * a list of font ID, load ID and data.
+ */
+void
+InteropTextAsset::resolve_fonts(vector<shared_ptr<Asset>> assets)
+{
+ for (auto asset: assets) {
+ auto font = dynamic_pointer_cast<FontAsset>(asset);
+ if (!font) {
+ continue;
+ }
+
+ DCP_ASSERT(_file);
+
+ for (auto load_font_node: _load_font_nodes) {
+ auto const path_in_load_font_node = _file->parent_path() / load_font_node->uri;
+ if (font->file() && path_in_load_font_node == *font->file()) {
+ auto existing = std::find_if(_fonts.begin(), _fonts.end(), [load_font_node](Font const& font) { return font.load_id == load_font_node->id; });
+ if (existing != _fonts.end()) {
+ *existing = Font(load_font_node->id, asset->id(), font->file().get());
+ } else {
+ _fonts.push_back(Font(load_font_node->id, asset->id(), font->file().get()));
+ }
+ }
+ }
+ }
+}
+
+
+vector<shared_ptr<Asset>>
+InteropTextAsset::font_assets()
+{
+ vector<shared_ptr<Asset>> assets;
+ for (auto const& i: _fonts) {
+ DCP_ASSERT (i.file);
+ assets.push_back(make_shared<FontAsset>(i.uuid, i.file.get()));
+ }
+ return assets;
+}
+
+
+vector<shared_ptr<const Asset>>
+InteropTextAsset::font_assets() const
+{
+ vector<shared_ptr<const Asset>> assets;
+ for (auto const& i: _fonts) {
+ DCP_ASSERT (i.file);
+ assets.push_back(make_shared<const FontAsset>(i.uuid, i.file.get()));
+ }
+ return assets;
+}
+
+
+void
+InteropTextAsset::add_to_assetmap(AssetMap& asset_map, boost::filesystem::path root) const
+{
+ Asset::add_to_assetmap(asset_map, root);
+
+ for (auto i: _texts) {
+ auto im = dynamic_pointer_cast<dcp::SubtitleImage>(i);
+ if (im) {
+ DCP_ASSERT(im->file());
+ add_file_to_assetmap(asset_map, root, im->file().get(), im->id());
+ }
+ }
+}
+
+
+void
+InteropTextAsset::add_to_pkl(shared_ptr<PKL> pkl, boost::filesystem::path root) const
+{
+ Asset::add_to_pkl (pkl, root);
+
+ for (auto i: _texts) {
+ auto im = dynamic_pointer_cast<dcp::SubtitleImage> (i);
+ if (im) {
+ auto png_image = im->png_image ();
+ pkl->add_asset(im->id(), optional<string>(), make_digest(png_image), png_image.size(), "image/png", root.filename().string());
+ }
+ }
+}
+
+
+void
+InteropTextAsset::set_font_file(string load_id, boost::filesystem::path file)
+{
+ for (auto& i: _fonts) {
+ if (i.load_id == load_id) {
+ i.file = file;
+ }
+ }
+
+ for (auto i: _load_font_nodes) {
+ if (i->id == load_id) {
+ i->uri = file.filename().string();
+ }
+ }
+}
+
+
+vector<string>
+InteropTextAsset::unresolved_fonts() const
+{
+ vector<string> unresolved;
+ for (auto load_font_node: _load_font_nodes) {
+ if (std::find_if(_fonts.begin(), _fonts.end(), [load_font_node](Font const& font) { return font.load_id == load_font_node->id; }) == _fonts.end()) {
+ unresolved.push_back(load_font_node->id);
+ }
+ }
+ return unresolved;
+}
+
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