2 Copyright (C) 2012-2015 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 "smpte_subtitle_asset.h"
21 #include "smpte_load_font_node.h"
22 #include "font_node.h"
23 #include "exceptions.h"
27 #include "raw_convert.h"
28 #include <libxml++/libxml++.h>
29 #include <boost/foreach.hpp>
30 #include <boost/algorithm/string.hpp>
34 using std::stringstream;
37 using boost::shared_ptr;
39 using boost::is_any_of;
42 SMPTESubtitleAsset::SMPTESubtitleAsset (boost::filesystem::path file, bool mxf)
43 : SubtitleAsset (file)
45 shared_ptr<cxml::Document> xml (new cxml::Document ("SubtitleReel"));
48 ASDCP::TimedText::MXFReader reader;
49 Kumu::Result_t r = reader.OpenRead (file.string().c_str ());
50 if (ASDCP_FAILURE (r)) {
51 boost::throw_exception (MXFFileError ("could not open MXF file for reading", file, r));
55 reader.ReadTimedTextResource (s, 0, 0);
60 ASDCP::WriterInfo info;
61 reader.FillWriterInfo (info);
64 Kumu::bin2UUIDhex (info.AssetUUID, ASDCP::UUIDlen, buffer, sizeof (buffer));
67 xml->read_file (file);
68 _id = xml->string_child("Id").substr (9);
71 _load_font_nodes = type_children<dcp::SMPTELoadFontNode> (xml, "LoadFont");
73 _content_title_text = xml->string_child ("ContentTitleText");
74 _annotation_text = xml->optional_string_child ("AnnotationText");
75 _issue_date = LocalTime (xml->string_child ("IssueDate"));
76 _reel_number = xml->optional_number_child<int> ("ReelNumber");
77 _language = xml->optional_string_child ("Language");
79 /* This is supposed to be two numbers, but a single number has been seen in the wild */
80 string const er = xml->string_child ("EditRate");
81 vector<string> er_parts;
82 split (er_parts, er, is_any_of (" "));
83 if (er_parts.size() == 1) {
84 _edit_rate = Fraction (raw_convert<int> (er_parts[0]), 1);
85 } else if (er_parts.size() == 2) {
86 _edit_rate = Fraction (raw_convert<int> (er_parts[0]), raw_convert<int> (er_parts[1]));
88 throw XMLError ("malformed EditRate " + er);
91 _time_code_rate = xml->number_child<int> ("TimeCodeRate");
92 if (xml->optional_string_child ("StartTime")) {
93 _start_time = Time (xml->string_child ("StartTime"), _time_code_rate);
96 shared_ptr<cxml::Node> subtitle_list = xml->optional_node_child ("SubtitleList");
98 list<cxml::NodePtr> f = subtitle_list->node_children ("Font");
99 list<shared_ptr<dcp::FontNode> > font_nodes;
100 BOOST_FOREACH (cxml::NodePtr& i, f) {
101 font_nodes.push_back (shared_ptr<FontNode> (new FontNode (i, _time_code_rate)));
104 parse_subtitles (xml, font_nodes);
107 list<shared_ptr<LoadFontNode> >
108 SMPTESubtitleAsset::load_font_nodes () const
110 list<shared_ptr<LoadFontNode> > lf;
111 copy (_load_font_nodes.begin(), _load_font_nodes.end(), back_inserter (lf));
116 SMPTESubtitleAsset::valid_mxf (boost::filesystem::path file)
118 ASDCP::TimedText::MXFReader reader;
119 Kumu::Result_t r = reader.OpenRead (file.string().c_str ());
120 return !ASDCP_FAILURE (r);
124 SMPTESubtitleAsset::xml_as_string () const
127 xmlpp::Element* root = doc.create_root_node ("dcst:SubtitleReel");
128 root->set_namespace_declaration ("http://www.smpte-ra.org/schemas/428-7/2010/DCST", "dcst");
129 root->set_namespace_declaration ("http://www.w3.org/2001/XMLSchema", "xs");
131 root->add_child("ID", "dcst")->add_child_text (_id);
132 root->add_child("ContentTitleText", "dcst")->add_child_text (_content_title_text);
133 if (_annotation_text) {
134 root->add_child("AnnotationText", "dcst")->add_child_text (_annotation_text.get ());
136 root->add_child("IssueDate", "dcst")->add_child_text (_issue_date.as_string (true));
138 root->add_child("ReelNumber", "dcst")->add_child_text (raw_convert<string> (_reel_number.get ()));
141 root->add_child("Language", "dcst")->add_child_text (_language.get ());
143 root->add_child("EditRate", "dcst")->add_child_text (_edit_rate.as_string ());
144 root->add_child("TimeCodeRate", "dcst")->add_child_text (raw_convert<string> (_time_code_rate));
146 root->add_child("StartTime", "dcst")->add_child_text (_start_time.get().as_string ());
149 BOOST_FOREACH (shared_ptr<SMPTELoadFontNode> i, _load_font_nodes) {
150 xmlpp::Element* load_font = root->add_child("LoadFont", "dcst");
151 load_font->add_child_text (i->urn);
152 load_font->set_attribute ("ID", i->id);
155 subtitles_as_xml (root->add_child ("SubtitleList", "dcst"), _time_code_rate, "dcst");
157 return doc.write_to_string_formatted ("UTF-8");
160 /** Write this content to a MXF file */
162 SMPTESubtitleAsset::write (boost::filesystem::path p) const
164 ASDCP::WriterInfo writer_info;
165 fill_writer_info (&writer_info, _id, SMPTE);
167 ASDCP::TimedText::TimedTextDescriptor descriptor;
168 descriptor.EditRate = ASDCP::Rational (_edit_rate.numerator, _edit_rate.denominator);
169 descriptor.EncodingName = "UTF-8";
170 descriptor.ResourceList.clear ();
171 descriptor.NamespaceName = "dcst";
172 memcpy (descriptor.AssetID, writer_info.AssetUUID, ASDCP::UUIDlen);
173 descriptor.ContainerDuration = latest_subtitle_out().as_editable_units (_edit_rate.numerator / _edit_rate.denominator);
175 /* XXX: fonts into descriptor? */
177 ASDCP::TimedText::MXFWriter writer;
178 Kumu::Result_t r = writer.OpenWrite (p.string().c_str(), writer_info, descriptor);
179 if (ASDCP_FAILURE (r)) {
180 boost::throw_exception (FileError ("could not open subtitle MXF for writing", p.string(), r));
183 /* XXX: no encryption */
184 writer.WriteTimedTextResource (xml_as_string ());
192 SMPTESubtitleAsset::equals (shared_ptr<const Asset> other_asset, EqualityOptions options, NoteHandler note) const