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;
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::Document> xml (new cxml::Document ("DCSubtitle"));
60 xml->read_file (xml_file);
62 _uuid = xml->string_child ("SubtitleID");
63 _movie_title = xml->string_child ("MovieTitle");
64 _reel_number = xml->string_child ("ReelNumber");
65 _language = xml->string_child ("Language");
67 xml->ignore_child ("LoadFont");
69 list<shared_ptr<dcp::parse::Font> > font_nodes = type_children<dcp::parse::Font> (xml, "Font");
70 _load_font_nodes = type_children<dcp::parse::LoadFont> (xml, "LoadFont");
72 /* Now make Subtitle objects to represent the raw XML nodes
76 ParseState parse_state;
77 examine_font_nodes (xml, font_nodes, parse_state);
81 SubtitleAsset::examine_font_nodes (
82 shared_ptr<const cxml::Node> xml,
83 list<shared_ptr<dcp::parse::Font> > const & font_nodes,
84 ParseState& parse_state
87 for (list<shared_ptr<dcp::parse::Font> >::const_iterator i = font_nodes.begin(); i != font_nodes.end(); ++i) {
89 parse_state.font_nodes.push_back (*i);
90 maybe_add_subtitle ((*i)->text, parse_state);
92 for (list<shared_ptr<dcp::parse::Subtitle> >::iterator j = (*i)->subtitle_nodes.begin(); j != (*i)->subtitle_nodes.end(); ++j) {
93 parse_state.subtitle_nodes.push_back (*j);
94 examine_text_nodes (xml, (*j)->text_nodes, parse_state);
95 examine_font_nodes (xml, (*j)->font_nodes, parse_state);
96 parse_state.subtitle_nodes.pop_back ();
99 examine_font_nodes (xml, (*i)->font_nodes, parse_state);
100 examine_text_nodes (xml, (*i)->text_nodes, parse_state);
102 parse_state.font_nodes.pop_back ();
107 SubtitleAsset::examine_text_nodes (
108 shared_ptr<const cxml::Node> xml,
109 list<shared_ptr<dcp::parse::Text> > const & text_nodes,
110 ParseState& parse_state
113 for (list<shared_ptr<dcp::parse::Text> >::const_iterator i = text_nodes.begin(); i != text_nodes.end(); ++i) {
114 parse_state.text_nodes.push_back (*i);
115 maybe_add_subtitle ((*i)->text, parse_state);
116 examine_font_nodes (xml, (*i)->font_nodes, parse_state);
117 parse_state.text_nodes.pop_back ();
122 SubtitleAsset::maybe_add_subtitle (string text, ParseState const & parse_state)
124 if (empty_or_white_space (text)) {
128 if (parse_state.text_nodes.empty() || parse_state.subtitle_nodes.empty ()) {
132 assert (!parse_state.text_nodes.empty ());
133 assert (!parse_state.subtitle_nodes.empty ());
135 dcp::parse::Font effective_font (parse_state.font_nodes);
136 dcp::parse::Text effective_text (*parse_state.text_nodes.back ());
137 dcp::parse::Subtitle effective_subtitle (*parse_state.subtitle_nodes.back ());
139 _subtitles.push_back (
140 shared_ptr<Subtitle> (
142 font_id_to_name (effective_font.id),
143 effective_font.italic.get(),
144 effective_font.color.get(),
146 effective_subtitle.in,
147 effective_subtitle.out,
148 effective_text.v_position,
149 effective_text.v_align,
151 effective_font.effect ? effective_font.effect.get() : NONE,
152 effective_font.effect_color.get(),
153 effective_subtitle.fade_up_time,
154 effective_subtitle.fade_down_time
160 list<shared_ptr<Subtitle> >
161 SubtitleAsset::subtitles_at (Time t) const
163 list<shared_ptr<Subtitle> > s;
164 for (list<shared_ptr<Subtitle> >::const_iterator i = _subtitles.begin(); i != _subtitles.end(); ++i) {
165 if ((*i)->in() <= t && t <= (*i)->out ()) {
174 SubtitleAsset::font_id_to_name (string id) const
176 list<shared_ptr<dcp::parse::LoadFont> >::const_iterator i = _load_font_nodes.begin();
177 while (i != _load_font_nodes.end() && (*i)->id != id) {
181 if (i == _load_font_nodes.end ()) {
185 if ((*i)->uri == "arial.ttf") {
213 , _v_position (v_position)
217 , _effect_color (effect_color)
218 , _fade_up_time (fade_up_time)
219 , _fade_down_time (fade_down_time)
225 Subtitle::size_in_pixels (int screen_height) const
227 /* Size in the subtitle file is given in points as if the screen
228 height is 11 inches, so a 72pt font would be 1/11th of the screen
232 return _size * screen_height / (11 * 72);
236 dcp::operator== (Subtitle const & a, Subtitle const & b)
239 a.font() == b.font() &&
240 a.italic() == b.italic() &&
241 a.color() == b.color() &&
242 a.size() == b.size() &&
244 a.out() == b.out() &&
245 a.v_position() == b.v_position() &&
246 a.v_align() == b.v_align() &&
247 a.text() == b.text() &&
248 a.effect() == b.effect() &&
249 a.effect_color() == b.effect_color() &&
250 a.fade_up_time() == b.fade_up_time() &&
251 a.fade_down_time() == b.fade_down_time()
256 dcp::operator<< (ostream& s, Subtitle const & sub)
258 s << "\n`" << sub.text() << "' from " << sub.in() << " to " << sub.out() << ";\n"
259 << "fade up " << sub.fade_up_time() << ", fade down " << sub.fade_down_time() << ";\n"
260 << "font " << sub.font() << ", ";
268 s << ", size " << sub.size() << ", color " << sub.color() << ", vpos " << sub.v_position() << ", valign " << ((int) sub.v_align()) << ";\n"
269 << "effect " << ((int) sub.effect()) << ", effect color " << sub.effect_color();
275 SubtitleAsset::add (shared_ptr<Subtitle> s)
277 _subtitles.push_back (s);
282 SubtitleAsset::write_to_cpl (xmlpp::Element* node) const
284 /* XXX: should EditRate, Duration and IntrinsicDuration be in here? */
286 xmlpp::Node* ms = node->add_child ("MainSubtitle");
287 ms->add_child("Id")->add_child_text("urn:uuid:" + _uuid);
288 ms->add_child("AnnotationText")->add_child_text (_file_name.string ());
290 ms->add_child("EntryPoint")->add_child_text ("0");
293 struct SubtitleSorter {
294 bool operator() (shared_ptr<Subtitle> a, shared_ptr<Subtitle> b) {
295 if (a->in() != b->in()) {
296 return a->in() < b->in();
298 return a->v_position() < b->v_position();
303 SubtitleAsset::write_xml () const
305 FILE* f = fopen_boost (path (), "r");
306 Glib::ustring const s = xml_as_string ();
307 fwrite (s.c_str(), 1, s.length(), f);
312 SubtitleAsset::xml_as_string () const
315 xmlpp::Element* root = doc.create_root_node ("DCSubtitle");
316 root->set_attribute ("Version", "1.0");
318 root->add_child("SubtitleID")->add_child_text (_uuid);
319 root->add_child("MovieTitle")->add_child_text (_movie_title);
320 root->add_child("ReelNumber")->add_child_text (lexical_cast<string> (_reel_number));
321 root->add_child("Language")->add_child_text (_language);
323 if (_load_font_nodes.size() > 1) {
324 boost::throw_exception (MiscError ("multiple LoadFont nodes not supported"));
327 if (!_load_font_nodes.empty ()) {
328 xmlpp::Element* load_font = root->add_child("LoadFont");
329 load_font->set_attribute("Id", _load_font_nodes.front()->id);
330 load_font->set_attribute("URI", _load_font_nodes.front()->uri);
333 list<shared_ptr<Subtitle> > sorted = _subtitles;
335 sorted.sort (SubtitleSorter ());
338 /* XXX: multiple fonts not supported */
339 /* XXX: script, underlined, weight not supported */
344 Effect effect = NONE;
349 Time last_fade_up_time;
350 Time last_fade_down_time;
352 xmlpp::Element* font = 0;
353 xmlpp::Element* subtitle = 0;
355 for (list<shared_ptr<Subtitle> >::iterator i = sorted.begin(); i != sorted.end(); ++i) {
357 /* We will start a new <Font>...</Font> whenever some font property changes.
358 I suppose we should really make an optimal hierarchy of <Font> tags, but
362 bool const font_changed =
363 italic != (*i)->italic() ||
364 color != (*i)->color() ||
365 size != (*i)->size() ||
366 effect != (*i)->effect() ||
367 effect_color != (*i)->effect_color();
370 italic = (*i)->italic ();
371 color = (*i)->color ();
372 size = (*i)->size ();
373 effect = (*i)->effect ();
374 effect_color = (*i)->effect_color ();
377 if (!font || font_changed) {
378 font = root->add_child ("Font");
379 string id = "theFontId";
380 if (!_load_font_nodes.empty()) {
381 id = _load_font_nodes.front()->id;
383 font->set_attribute ("Id", id);
384 font->set_attribute ("Italic", italic ? "yes" : "no");
385 font->set_attribute ("Color", color.to_argb_string());
386 font->set_attribute ("Size", lexical_cast<string> (size));
387 font->set_attribute ("Effect", effect_to_string (effect));
388 font->set_attribute ("EffectColor", effect_color.to_argb_string());
389 font->set_attribute ("Script", "normal");
390 font->set_attribute ("Underlined", "no");
391 font->set_attribute ("Weight", "normal");
394 if (!subtitle || font_changed ||
395 (last_in != (*i)->in() ||
396 last_out != (*i)->out() ||
397 last_fade_up_time != (*i)->fade_up_time() ||
398 last_fade_down_time != (*i)->fade_down_time()
401 subtitle = font->add_child ("Subtitle");
402 subtitle->set_attribute ("SpotNumber", lexical_cast<string> (spot_number++));
403 subtitle->set_attribute ("TimeIn", (*i)->in().to_string());
404 subtitle->set_attribute ("TimeOut", (*i)->out().to_string());
405 subtitle->set_attribute ("FadeUpTime", lexical_cast<string> ((*i)->fade_up_time().to_ticks()));
406 subtitle->set_attribute ("FadeDownTime", lexical_cast<string> ((*i)->fade_down_time().to_ticks()));
408 last_in = (*i)->in ();
409 last_out = (*i)->out ();
410 last_fade_up_time = (*i)->fade_up_time ();
411 last_fade_down_time = (*i)->fade_down_time ();
414 xmlpp::Element* text = subtitle->add_child ("Text");
415 text->set_attribute ("VAlign", valign_to_string ((*i)->v_align()));
416 text->set_attribute ("VPosition", lexical_cast<string> ((*i)->v_position()));
417 text->add_child_text ((*i)->text());
420 return doc.write_to_string_formatted ("UTF-8");