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>
39 using std::stringstream;
42 using boost::shared_ptr;
43 using boost::shared_array;
44 using boost::optional;
45 using boost::dynamic_pointer_cast;
48 SubtitleAsset::SubtitleAsset ()
53 SubtitleAsset::SubtitleAsset (boost::filesystem::path file)
60 SubtitleAsset::parse_subtitles (shared_ptr<cxml::Document> xml, list<shared_ptr<dcp::FontNode> > font_nodes)
62 /* Make Subtitle objects to represent the raw XML nodes in a sane way */
63 ParseState parse_state;
64 examine_font_nodes (xml, font_nodes, parse_state);
68 SubtitleAsset::examine_font_nodes (
69 shared_ptr<const cxml::Node> xml,
70 list<shared_ptr<dcp::FontNode> > const & font_nodes,
71 ParseState& parse_state
74 for (list<shared_ptr<dcp::FontNode> >::const_iterator i = font_nodes.begin(); i != font_nodes.end(); ++i) {
76 parse_state.font_nodes.push_back (*i);
77 maybe_add_subtitle ((*i)->text, parse_state);
79 for (list<shared_ptr<dcp::SubtitleNode> >::iterator j = (*i)->subtitle_nodes.begin(); j != (*i)->subtitle_nodes.end(); ++j) {
80 parse_state.subtitle_nodes.push_back (*j);
81 examine_text_nodes (xml, (*j)->text_nodes, parse_state);
82 examine_font_nodes (xml, (*j)->font_nodes, parse_state);
83 parse_state.subtitle_nodes.pop_back ();
86 examine_font_nodes (xml, (*i)->font_nodes, parse_state);
87 examine_text_nodes (xml, (*i)->text_nodes, parse_state);
89 parse_state.font_nodes.pop_back ();
94 SubtitleAsset::examine_text_nodes (
95 shared_ptr<const cxml::Node> xml,
96 list<shared_ptr<dcp::TextNode> > const & text_nodes,
97 ParseState& parse_state
100 for (list<shared_ptr<dcp::TextNode> >::const_iterator i = text_nodes.begin(); i != text_nodes.end(); ++i) {
101 parse_state.text_nodes.push_back (*i);
102 maybe_add_subtitle ((*i)->text, parse_state);
103 examine_font_nodes (xml, (*i)->font_nodes, parse_state);
104 parse_state.text_nodes.pop_back ();
109 SubtitleAsset::maybe_add_subtitle (string text, ParseState const & parse_state)
111 if (empty_or_white_space (text)) {
115 if (parse_state.text_nodes.empty() || parse_state.subtitle_nodes.empty ()) {
119 DCP_ASSERT (!parse_state.text_nodes.empty ());
120 DCP_ASSERT (!parse_state.subtitle_nodes.empty ());
122 dcp::FontNode effective_font (parse_state.font_nodes);
123 dcp::TextNode effective_text (*parse_state.text_nodes.back ());
124 dcp::SubtitleNode effective_subtitle (*parse_state.subtitle_nodes.back ());
126 _subtitles.push_back (
129 effective_font.italic.get_value_or (false),
130 effective_font.colour.get_value_or (dcp::Colour (255, 255, 255)),
132 effective_font.aspect_adjust.get_value_or (1.0),
133 effective_subtitle.in,
134 effective_subtitle.out,
135 effective_text.h_position,
136 effective_text.h_align,
137 effective_text.v_position,
138 effective_text.v_align,
140 effective_font.effect.get_value_or (NONE),
141 effective_font.effect_colour.get_value_or (dcp::Colour (0, 0, 0)),
142 effective_subtitle.fade_up_time,
143 effective_subtitle.fade_down_time
149 SubtitleAsset::subtitles_during (Time from, Time to) const
151 list<SubtitleString> s;
152 for (list<SubtitleString>::const_iterator i = _subtitles.begin(); i != _subtitles.end(); ++i) {
153 if (i->out() >= from && i->in() <= to) {
162 SubtitleAsset::add (SubtitleString s)
164 _subtitles.push_back (s);
168 SubtitleAsset::latest_subtitle_out () const
171 for (list<SubtitleString>::const_iterator i = _subtitles.begin(); i != _subtitles.end(); ++i) {
181 SubtitleAsset::equals (shared_ptr<const Asset> other_asset, EqualityOptions options, NoteHandler note) const
183 if (!Asset::equals (other_asset, options, note)) {
187 shared_ptr<const SubtitleAsset> other = dynamic_pointer_cast<const SubtitleAsset> (other_asset);
192 if (_subtitles != other->_subtitles) {
193 note (DCP_ERROR, "subtitles differ");
200 struct SubtitleSorter {
201 bool operator() (SubtitleString const & a, SubtitleString const & b) {
202 if (a.in() != b.in()) {
203 return a.in() < b.in();
205 return a.v_position() < b.v_position();
210 SubtitleAsset::subtitles_as_xml (xmlpp::Element* root, int time_code_rate, string xmlns) const
212 list<SubtitleString> sorted = _subtitles;
213 sorted.sort (SubtitleSorter ());
215 /* XXX: script, underlined, weight not supported */
217 optional<string> font;
221 float aspect_adjust = 1.0;
222 Effect effect = NONE;
223 Colour effect_colour;
227 Time last_fade_up_time;
228 Time last_fade_down_time;
230 xmlpp::Element* font_element = 0;
231 xmlpp::Element* subtitle_element = 0;
233 for (list<SubtitleString>::iterator i = sorted.begin(); i != sorted.end(); ++i) {
235 /* We will start a new <Font>...</Font> whenever some font property changes.
236 I suppose we should really make an optimal hierarchy of <Font> tags, but
240 bool const font_changed =
242 italic != i->italic() ||
243 colour != i->colour() ||
245 fabs (aspect_adjust - i->aspect_adjust()) > ASPECT_ADJUST_EPSILON ||
246 effect != i->effect() ||
247 effect_colour != i->effect_colour();
251 italic = i->italic ();
252 colour = i->colour ();
254 aspect_adjust = i->aspect_adjust ();
255 effect = i->effect ();
256 effect_colour = i->effect_colour ();
259 if (!font_element || font_changed) {
260 font_element = root->add_child ("Font", xmlns);
262 font_element->set_attribute ("Id", font.get ());
264 font_element->set_attribute ("Italic", italic ? "yes" : "no");
265 font_element->set_attribute ("Color", colour.to_argb_string());
266 font_element->set_attribute ("Size", raw_convert<string> (size));
267 if (fabs (aspect_adjust - 1.0) > ASPECT_ADJUST_EPSILON) {
268 font_element->set_attribute ("AspectAdjust", raw_convert<string> (aspect_adjust));
270 font_element->set_attribute ("Effect", effect_to_string (effect));
271 font_element->set_attribute ("EffectColor", effect_colour.to_argb_string());
272 font_element->set_attribute ("Script", "normal");
273 font_element->set_attribute ("Underlined", "no");
274 font_element->set_attribute ("Weight", "normal");
277 if (!subtitle_element || font_changed ||
278 (last_in != i->in() ||
279 last_out != i->out() ||
280 last_fade_up_time != i->fade_up_time() ||
281 last_fade_down_time != i->fade_down_time()
284 subtitle_element = font_element->add_child ("Subtitle", xmlns);
285 subtitle_element->set_attribute ("SpotNumber", raw_convert<string> (spot_number++));
286 subtitle_element->set_attribute ("TimeIn", i->in().rebase(time_code_rate).as_string());
287 subtitle_element->set_attribute ("TimeOut", i->out().rebase(time_code_rate).as_string());
288 subtitle_element->set_attribute ("FadeUpTime", raw_convert<string> (i->fade_up_time().as_editable_units(time_code_rate)));
289 subtitle_element->set_attribute ("FadeDownTime", raw_convert<string> (i->fade_down_time().as_editable_units(time_code_rate)));
292 last_out = i->out ();
293 last_fade_up_time = i->fade_up_time ();
294 last_fade_down_time = i->fade_down_time ();
297 xmlpp::Element* text = subtitle_element->add_child ("Text", xmlns);
298 if (i->h_align() != HALIGN_CENTER) {
299 text->set_attribute ("HAlign", halign_to_string (i->h_align ()));
301 if (i->h_position() > ALIGN_EPSILON) {
302 text->set_attribute ("HPosition", raw_convert<string> (i->h_position() * 100, 6));
304 text->set_attribute ("VAlign", valign_to_string (i->v_align()));
305 text->set_attribute ("VPosition", raw_convert<string> (i->v_position() * 100, 6));
306 text->add_child_text (i->text());
311 SubtitleAsset::add_font_data (string id, boost::filesystem::path file)
313 boost::uintmax_t size = boost::filesystem::file_size (file);
314 FILE* f = fopen_boost (file, "r");
316 throw FileError ("could not open font file for reading", file, errno);
319 shared_array<uint8_t> data (new uint8_t[size]);
320 size_t const read = fread (data.get(), 1, size, f);
324 throw FileError ("could not read font file", file, -1);
327 _fonts[id] = FontData (data, size, file);