2 Copyright (C) 2012 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.
21 #include <boost/lexical_cast.hpp>
22 #include <boost/algorithm/string.hpp>
23 #include <libxml++/nodes/element.h>
24 #include "subtitle_asset.h"
25 #include "parse/subtitle.h"
33 using std::stringstream;
34 using boost::shared_ptr;
35 using boost::lexical_cast;
36 using boost::optional;
37 using namespace libdcp;
39 SubtitleAsset::SubtitleAsset (string directory, string xml_file)
40 : Asset (directory, xml_file)
43 read_xml (path().string());
46 SubtitleAsset::SubtitleAsset (string directory, string movie_title, string language)
48 , _movie_title (movie_title)
50 , _language (language)
57 SubtitleAsset::read_xml (string xml_file)
59 shared_ptr<cxml::File> xml (new cxml::File (xml_file, "DCSubtitle"));
61 _uuid = xml->string_child ("SubtitleID");
62 _movie_title = xml->string_child ("MovieTitle");
63 _reel_number = xml->string_child ("ReelNumber");
64 _language = xml->string_child ("Language");
66 xml->ignore_child ("LoadFont");
68 list<shared_ptr<libdcp::parse::Font> > font_nodes = type_children<libdcp::parse::Font> (xml, "Font");
69 _load_font_nodes = type_children<libdcp::parse::LoadFont> (xml, "LoadFont");
71 /* Now make Subtitle objects to represent the raw XML nodes
75 ParseState parse_state;
76 examine_font_nodes (xml, font_nodes, parse_state);
80 SubtitleAsset::examine_font_nodes (
81 shared_ptr<const cxml::Node> xml,
82 list<shared_ptr<libdcp::parse::Font> > const & font_nodes,
83 ParseState& parse_state
86 for (list<shared_ptr<libdcp::parse::Font> >::const_iterator i = font_nodes.begin(); i != font_nodes.end(); ++i) {
88 parse_state.font_nodes.push_back (*i);
89 maybe_add_subtitle ((*i)->text, parse_state);
91 for (list<shared_ptr<libdcp::parse::Subtitle> >::iterator j = (*i)->subtitle_nodes.begin(); j != (*i)->subtitle_nodes.end(); ++j) {
92 parse_state.subtitle_nodes.push_back (*j);
93 examine_text_nodes (xml, (*j)->text_nodes, parse_state);
94 examine_font_nodes (xml, (*j)->font_nodes, parse_state);
95 parse_state.subtitle_nodes.pop_back ();
98 examine_font_nodes (xml, (*i)->font_nodes, parse_state);
99 examine_text_nodes (xml, (*i)->text_nodes, parse_state);
101 parse_state.font_nodes.pop_back ();
106 SubtitleAsset::examine_text_nodes (
107 shared_ptr<const cxml::Node> xml,
108 list<shared_ptr<libdcp::parse::Text> > const & text_nodes,
109 ParseState& parse_state
112 for (list<shared_ptr<libdcp::parse::Text> >::const_iterator i = text_nodes.begin(); i != text_nodes.end(); ++i) {
113 parse_state.text_nodes.push_back (*i);
114 maybe_add_subtitle ((*i)->text, parse_state);
115 examine_font_nodes (xml, (*i)->font_nodes, parse_state);
116 parse_state.text_nodes.pop_back ();
121 SubtitleAsset::maybe_add_subtitle (string text, ParseState const & parse_state)
123 if (empty_or_white_space (text)) {
127 if (parse_state.text_nodes.empty() || parse_state.subtitle_nodes.empty ()) {
131 assert (!parse_state.text_nodes.empty ());
132 assert (!parse_state.subtitle_nodes.empty ());
134 libdcp::parse::Font effective_font (parse_state.font_nodes);
135 libdcp::parse::Text effective_text (*parse_state.text_nodes.back ());
136 libdcp::parse::Subtitle effective_subtitle (*parse_state.subtitle_nodes.back ());
138 _subtitles.push_back (
139 shared_ptr<Subtitle> (
141 font_id_to_name (effective_font.id),
142 effective_font.italic.get(),
143 effective_font.color.get(),
145 effective_subtitle.in,
146 effective_subtitle.out,
147 effective_text.v_position,
148 effective_text.v_align,
150 effective_font.effect ? effective_font.effect.get() : NONE,
151 effective_font.effect_color.get(),
152 effective_subtitle.fade_up_time,
153 effective_subtitle.fade_down_time
159 list<shared_ptr<Subtitle> >
160 SubtitleAsset::subtitles_at (Time t) const
162 list<shared_ptr<Subtitle> > s;
163 for (list<shared_ptr<Subtitle> >::const_iterator i = _subtitles.begin(); i != _subtitles.end(); ++i) {
164 if ((*i)->in() <= t && t <= (*i)->out ()) {
173 SubtitleAsset::font_id_to_name (string id) const
175 list<shared_ptr<libdcp::parse::LoadFont> >::const_iterator i = _load_font_nodes.begin();
176 while (i != _load_font_nodes.end() && (*i)->id != id) {
180 if (i == _load_font_nodes.end ()) {
184 if ((*i)->uri == "arial.ttf") {
212 , _v_position (v_position)
216 , _effect_color (effect_color)
217 , _fade_up_time (fade_up_time)
218 , _fade_down_time (fade_down_time)
224 Subtitle::size_in_pixels (int screen_height) const
226 /* Size in the subtitle file is given in points as if the screen
227 height is 11 inches, so a 72pt font would be 1/11th of the screen
231 return _size * screen_height / (11 * 72);
235 libdcp::operator== (Subtitle const & a, Subtitle const & b)
238 a.font() == b.font() &&
239 a.italic() == b.italic() &&
240 a.color() == b.color() &&
241 a.size() == b.size() &&
243 a.out() == b.out() &&
244 a.v_position() == b.v_position() &&
245 a.v_align() == b.v_align() &&
246 a.text() == b.text() &&
247 a.effect() == b.effect() &&
248 a.effect_color() == b.effect_color() &&
249 a.fade_up_time() == b.fade_up_time() &&
250 a.fade_down_time() == b.fade_down_time()
255 libdcp::operator<< (ostream& s, Subtitle const & sub)
257 s << "\n`" << sub.text() << "' from " << sub.in() << " to " << sub.out() << ";\n"
258 << "fade up " << sub.fade_up_time() << ", fade down " << sub.fade_down_time() << ";\n"
259 << "font " << sub.font() << ", ";
267 s << ", size " << sub.size() << ", color " << sub.color() << ", vpos " << sub.v_position() << ", valign " << ((int) sub.v_align()) << ";\n"
268 << "effect " << ((int) sub.effect()) << ", effect color " << sub.effect_color();
274 SubtitleAsset::add (shared_ptr<Subtitle> s)
276 _subtitles.push_back (s);
281 SubtitleAsset::write_to_cpl (xmlpp::Element* node, bool) const
283 /* XXX: should EditRate, Duration and IntrinsicDuration be in here? */
285 xmlpp::Node* ms = node->add_child ("MainSubtitle");
286 ms->add_child("Id")->add_child_text("urn:uuid:" + _uuid);
287 ms->add_child("AnnotationText")->add_child_text (_file_name);
289 ms->add_child("EntryPoint")->add_child_text ("0");
292 struct SubtitleSorter {
293 bool operator() (shared_ptr<Subtitle> a, shared_ptr<Subtitle> b) {
294 if (a->in() != b->in()) {
295 return a->in() < b->in();
297 return a->v_position() < b->v_position();
302 SubtitleAsset::write_xml () const
304 ofstream s (path().string().c_str());
309 SubtitleAsset::write_xml (ostream& s) const
312 xmlpp::Element* root = doc.create_root_node ("DCSubtitle");
313 root->set_attribute ("Version", "1.0");
315 root->add_child("SubtitleID")->add_child_text (_uuid);
316 root->add_child("MovieTitle")->add_child_text (_movie_title);
317 root->add_child("ReelNumber")->add_child_text (lexical_cast<string> (_reel_number));
318 root->add_child("Language")->add_child_text (_language);
320 if (_load_font_nodes.size() > 1) {
321 boost::throw_exception (MiscError ("multiple LoadFont nodes not supported"));
324 if (!_load_font_nodes.empty ()) {
325 xmlpp::Element* load_font = root->add_child("LoadFont");
326 load_font->set_attribute("Id", _load_font_nodes.front()->id);
327 load_font->set_attribute("URI", _load_font_nodes.front()->uri);
330 list<shared_ptr<Subtitle> > sorted = _subtitles;
332 sorted.sort (SubtitleSorter ());
335 /* XXX: multiple fonts not supported */
336 /* XXX: script, underlined, weight not supported */
341 Effect effect = NONE;
346 Time last_fade_up_time;
347 Time last_fade_down_time;
349 xmlpp::Element* font = 0;
350 xmlpp::Element* subtitle = 0;
352 for (list<shared_ptr<Subtitle> >::iterator i = sorted.begin(); i != sorted.end(); ++i) {
354 /* We will start a new <Font>...</Font> whenever some font property changes.
355 I suppose we should really make an optimal hierarchy of <Font> tags, but
359 bool const font_changed =
360 italic != (*i)->italic() ||
361 color != (*i)->color() ||
362 size != (*i)->size() ||
363 effect != (*i)->effect() ||
364 effect_color != (*i)->effect_color();
367 italic = (*i)->italic ();
368 color = (*i)->color ();
369 size = (*i)->size ();
370 effect = (*i)->effect ();
371 effect_color = (*i)->effect_color ();
374 if (!font || font_changed) {
375 font = root->add_child ("Font");
376 string id = "theFontId";
377 if (!_load_font_nodes.empty()) {
378 id = _load_font_nodes.front()->id;
380 font->set_attribute ("Id", id);
381 font->set_attribute ("Italic", italic ? "yes" : "no");
382 font->set_attribute ("Color", color.to_argb_string());
383 font->set_attribute ("Size", lexical_cast<string> (size));
384 font->set_attribute ("Effect", effect_to_string (effect));
385 font->set_attribute ("EffectColor", effect_color.to_argb_string());
386 font->set_attribute ("Script", "normal");
387 font->set_attribute ("Underlined", "no");
388 font->set_attribute ("Weight", "normal");
391 if (!subtitle || font_changed ||
392 (last_in != (*i)->in() ||
393 last_out != (*i)->out() ||
394 last_fade_up_time != (*i)->fade_up_time() ||
395 last_fade_down_time != (*i)->fade_down_time()
398 subtitle = font->add_child ("Subtitle");
399 subtitle->set_attribute ("SpotNumber", lexical_cast<string> (spot_number++));
400 subtitle->set_attribute ("TimeIn", (*i)->in().to_string());
401 subtitle->set_attribute ("TimeOut", (*i)->out().to_string());
402 subtitle->set_attribute ("FadeUpTime", lexical_cast<string> ((*i)->fade_up_time().to_ticks()));
403 subtitle->set_attribute ("FadeDownTime", lexical_cast<string> ((*i)->fade_down_time().to_ticks()));
405 last_in = (*i)->in ();
406 last_out = (*i)->out ();
407 last_fade_up_time = (*i)->fade_up_time ();
408 last_fade_down_time = (*i)->fade_down_time ();
411 xmlpp::Element* text = subtitle->add_child ("Text");
412 text->set_attribute ("VAlign", valign_to_string ((*i)->v_align()));
413 text->set_attribute ("VPosition", lexical_cast<string> ((*i)->v_position()));
414 text->add_child_text ((*i)->text());
417 doc.write_to_stream_formatted (s, "UTF-8");