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 "raw_convert.h"
21 #include "subtitle_asset.h"
24 #include "font_node.h"
25 #include "text_node.h"
26 #include "subtitle_string.h"
27 #include "dcp_assert.h"
30 #include <libxml++/nodes/element.h>
31 #include <boost/algorithm/string.hpp>
32 #include <boost/shared_array.hpp>
33 #include <boost/foreach.hpp>
40 using std::stringstream;
44 using boost::shared_ptr;
45 using boost::shared_array;
46 using boost::optional;
47 using boost::dynamic_pointer_cast;
50 SubtitleAsset::SubtitleAsset ()
55 SubtitleAsset::SubtitleAsset (boost::filesystem::path file)
62 SubtitleAsset::parse_subtitles (shared_ptr<cxml::Document> xml, list<shared_ptr<dcp::FontNode> > font_nodes)
64 /* Make Subtitle objects to represent the raw XML nodes in a sane way */
65 ParseState parse_state;
66 examine_font_nodes (xml, font_nodes, parse_state);
70 SubtitleAsset::examine_subtitle_nodes (
71 shared_ptr<const cxml::Node> xml,
72 list<shared_ptr<dcp::SubtitleNode> > const & subtitle_nodes,
73 ParseState& parse_state
76 for (list<shared_ptr<dcp::SubtitleNode> >::const_iterator j = subtitle_nodes.begin(); j != subtitle_nodes.end(); ++j) {
77 parse_state.subtitle_nodes.push_back (*j);
78 examine_text_nodes (xml, (*j)->text_nodes, parse_state);
79 examine_font_nodes (xml, (*j)->font_nodes, parse_state);
80 parse_state.subtitle_nodes.pop_back ();
85 SubtitleAsset::examine_font_nodes (
86 shared_ptr<const cxml::Node> xml,
87 list<shared_ptr<dcp::FontNode> > const & font_nodes,
88 ParseState& parse_state
91 for (list<shared_ptr<dcp::FontNode> >::const_iterator i = font_nodes.begin(); i != font_nodes.end(); ++i) {
93 parse_state.font_nodes.push_back (*i);
94 maybe_add_subtitle ((*i)->text, parse_state);
96 examine_subtitle_nodes (xml, (*i)->subtitle_nodes, parse_state);
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<dcp::TextNode> > const & text_nodes,
109 ParseState& parse_state
112 for (list<shared_ptr<dcp::TextNode> >::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 DCP_ASSERT (!parse_state.text_nodes.empty ());
132 DCP_ASSERT (!parse_state.subtitle_nodes.empty ());
134 dcp::FontNode effective_font (parse_state.font_nodes);
135 dcp::TextNode effective_text (*parse_state.text_nodes.back ());
136 dcp::SubtitleNode effective_subtitle (*parse_state.subtitle_nodes.back ());
138 _subtitles.push_back (
141 effective_font.italic.get_value_or (false),
142 effective_font.colour.get_value_or (dcp::Colour (255, 255, 255)),
144 effective_font.aspect_adjust.get_value_or (1.0),
145 effective_subtitle.in,
146 effective_subtitle.out,
147 effective_text.h_position,
148 effective_text.h_align,
149 effective_text.v_position,
150 effective_text.v_align,
152 effective_font.effect.get_value_or (NONE),
153 effective_font.effect_colour.get_value_or (dcp::Colour (0, 0, 0)),
154 effective_subtitle.fade_up_time,
155 effective_subtitle.fade_down_time
161 SubtitleAsset::subtitles_during (Time from, Time to, bool starting) const
163 list<SubtitleString> s;
164 for (list<SubtitleString>::const_iterator i = _subtitles.begin(); i != _subtitles.end(); ++i) {
165 if ((starting && from <= i->in() && i->in() < to) || (!starting && i->out() >= from && i->in() <= to)) {
174 SubtitleAsset::add (SubtitleString s)
176 _subtitles.push_back (s);
180 SubtitleAsset::latest_subtitle_out () const
183 for (list<SubtitleString>::const_iterator i = _subtitles.begin(); i != _subtitles.end(); ++i) {
193 SubtitleAsset::equals (shared_ptr<const Asset> other_asset, EqualityOptions options, NoteHandler note) const
195 if (!Asset::equals (other_asset, options, note)) {
199 shared_ptr<const SubtitleAsset> other = dynamic_pointer_cast<const SubtitleAsset> (other_asset);
204 if (_subtitles != other->_subtitles) {
205 note (DCP_ERROR, "subtitles differ");
212 struct SubtitleSorter {
213 bool operator() (SubtitleString const & a, SubtitleString const & b) {
214 if (a.in() != b.in()) {
215 return a.in() < b.in();
217 return a.v_position() < b.v_position();
221 /** @param standard Standard (INTEROP or SMPTE); this is used rather than putting things in the child
222 * class because the differences between the two are fairly subtle.
225 SubtitleAsset::subtitles_as_xml (xmlpp::Element* root, int time_code_rate, Standard standard) const
227 list<SubtitleString> sorted = _subtitles;
228 sorted.sort (SubtitleSorter ());
230 string const xmlns = standard == SMPTE ? "dcst" : "";
232 /* XXX: script, underlined, weight not supported */
234 optional<string> font;
238 float aspect_adjust = 1.0;
239 Effect effect = NONE;
240 Colour effect_colour;
244 Time last_fade_up_time;
245 Time last_fade_down_time;
247 xmlpp::Element* font_element = 0;
248 xmlpp::Element* subtitle_element = 0;
250 for (list<SubtitleString>::iterator i = sorted.begin(); i != sorted.end(); ++i) {
252 /* We will start a new <Font>...</Font> whenever some font property changes.
253 I suppose we should really make an optimal hierarchy of <Font> tags, but
257 bool const font_changed =
259 italic != i->italic() ||
260 colour != i->colour() ||
262 fabs (aspect_adjust - i->aspect_adjust()) > ASPECT_ADJUST_EPSILON ||
263 effect != i->effect() ||
264 effect_colour != i->effect_colour();
268 italic = i->italic ();
269 colour = i->colour ();
271 aspect_adjust = i->aspect_adjust ();
272 effect = i->effect ();
273 effect_colour = i->effect_colour ();
276 if (!font_element || font_changed) {
277 font_element = root->add_child ("Font", xmlns);
279 if (standard == SMPTE) {
280 font_element->set_attribute ("ID", font.get ());
282 font_element->set_attribute ("Id", font.get ());
285 font_element->set_attribute ("Italic", italic ? "yes" : "no");
286 font_element->set_attribute ("Color", colour.to_argb_string());
287 font_element->set_attribute ("Size", raw_convert<string> (size));
288 if (fabs (aspect_adjust - 1.0) > ASPECT_ADJUST_EPSILON) {
289 font_element->set_attribute ("AspectAdjust", raw_convert<string> (aspect_adjust));
291 font_element->set_attribute ("Effect", effect_to_string (effect));
292 font_element->set_attribute ("EffectColor", effect_colour.to_argb_string());
293 font_element->set_attribute ("Script", "normal");
294 if (standard == SMPTE) {
295 font_element->set_attribute ("Underline", "no");
297 font_element->set_attribute ("Underlined", "no");
299 font_element->set_attribute ("Weight", "normal");
302 if (!subtitle_element || font_changed ||
303 (last_in != i->in() ||
304 last_out != i->out() ||
305 last_fade_up_time != i->fade_up_time() ||
306 last_fade_down_time != i->fade_down_time()
309 subtitle_element = font_element->add_child ("Subtitle", xmlns);
310 subtitle_element->set_attribute ("SpotNumber", raw_convert<string> (spot_number++));
311 subtitle_element->set_attribute ("TimeIn", i->in().rebase(time_code_rate).as_string(standard));
312 subtitle_element->set_attribute ("TimeOut", i->out().rebase(time_code_rate).as_string(standard));
313 if (standard == SMPTE) {
314 subtitle_element->set_attribute ("FadeUpTime", i->fade_up_time().rebase(time_code_rate).as_string(standard));
315 subtitle_element->set_attribute ("FadeDownTime", i->fade_down_time().rebase(time_code_rate).as_string(standard));
317 subtitle_element->set_attribute ("FadeUpTime", raw_convert<string> (i->fade_up_time().as_editable_units(time_code_rate)));
318 subtitle_element->set_attribute ("FadeDownTime", raw_convert<string> (i->fade_down_time().as_editable_units(time_code_rate)));
322 last_out = i->out ();
323 last_fade_up_time = i->fade_up_time ();
324 last_fade_down_time = i->fade_down_time ();
327 xmlpp::Element* text = subtitle_element->add_child ("Text", xmlns);
328 if (i->h_align() != HALIGN_CENTER) {
329 if (standard == SMPTE) {
330 text->set_attribute ("Halign", halign_to_string (i->h_align ()));
332 text->set_attribute ("HAlign", halign_to_string (i->h_align ()));
335 if (i->h_position() > ALIGN_EPSILON) {
336 if (standard == SMPTE) {
337 text->set_attribute ("Hposition", raw_convert<string> (i->h_position() * 100, 6));
339 text->set_attribute ("HPosition", raw_convert<string> (i->h_position() * 100, 6));
342 if (standard == SMPTE) {
343 text->set_attribute ("Valign", valign_to_string (i->v_align()));
345 text->set_attribute ("VAlign", valign_to_string (i->v_align()));
347 if (i->v_position() > ALIGN_EPSILON) {
348 if (standard == SMPTE) {
349 text->set_attribute ("Vposition", raw_convert<string> (i->v_position() * 100, 6));
351 text->set_attribute ("VPosition", raw_convert<string> (i->v_position() * 100, 6));
354 if (standard == SMPTE) {
355 text->set_attribute ("Vposition", "0");
357 text->set_attribute ("VPosition", "0");
360 text->add_child_text (i->text());
365 SubtitleAsset::fonts_with_load_ids () const
367 map<string, Data> out;
368 BOOST_FOREACH (Font const & i, _fonts) {
369 out[i.load_id] = i.data;