2 Copyright (C) 2014-2016 Carl Hetherington <cth@carlh.net>
4 This file is part of DCP-o-matic.
6 DCP-o-matic is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 DCP-o-matic is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
21 #include "text_subtitle_decoder.h"
22 #include "text_subtitle_content.h"
23 #include "subtitle_content.h"
24 #include <dcp/subtitle_string.h>
25 #include <boost/foreach.hpp>
33 using boost::shared_ptr;
34 using boost::optional;
35 using boost::dynamic_pointer_cast;
37 TextSubtitleDecoder::TextSubtitleDecoder (shared_ptr<const TextSubtitleContent> content)
38 : TextSubtitle (content)
45 bind (&TextSubtitleDecoder::image_subtitles_during, this, _1, _2),
46 bind (&TextSubtitleDecoder::text_subtitles_during, this, _1, _2)
52 TextSubtitleDecoder::seek (ContentTime time, bool accurate)
54 subtitle->seek (time, accurate);
57 while (_next < _subtitles.size() && ContentTime::from_seconds (_subtitles[_next].from.all_as_seconds ()) < time) {
63 TextSubtitleDecoder::pass (PassReason, bool)
65 if (_next >= _subtitles.size ()) {
69 list<dcp::SubtitleString> out;
71 /* See if our next subtitle needs to be placed on screen by us */
72 bool needs_placement = false;
73 BOOST_FOREACH (sub::Line i, _subtitles[_next].lines) {
74 if (!i.vertical_position.reference && i.vertical_position.reference.get() == sub::TOP_OF_SUBTITLE) {
75 needs_placement = true;
79 /* Highest line index in this subtitle */
81 BOOST_FOREACH (sub::Line i, _subtitles[_next].lines) {
82 DCPOMATIC_ASSERT (i.vertical_position.reference && i.vertical_position.reference.get() == sub::TOP_OF_SUBTITLE);
83 DCPOMATIC_ASSERT (i.vertical_position.line);
84 highest = max (highest, i.vertical_position.line.get());
87 BOOST_FOREACH (sub::Line i, _subtitles[_next].lines) {
88 BOOST_FOREACH (sub::Block j, i.blocks) {
92 if (needs_placement) {
93 DCPOMATIC_ASSERT (i.vertical_position.line);
94 /* This 0.878 is an arbitrary value to lift the bottom sub off the bottom
95 of the screen a bit to a pleasing degree.
97 v_position = 0.878 + i.vertical_position.line.get() * 1.5 / 22;
98 v_align = dcp::VALIGN_BOTTOM;
100 DCPOMATIC_ASSERT (i.vertical_position.proportional);
101 DCPOMATIC_ASSERT (i.vertical_position.reference);
102 v_position = i.vertical_position.proportional.get();
103 switch (i.vertical_position.reference.get()) {
104 case sub::TOP_OF_SCREEN:
105 v_align = dcp::VALIGN_TOP;
107 case sub::CENTRE_OF_SCREEN:
108 v_align = dcp::VALIGN_CENTER;
110 case sub::BOTTOM_OF_SCREEN:
111 v_align = dcp::VALIGN_BOTTOM;
114 v_align = dcp::VALIGN_TOP;
120 dcp::SubtitleString (
121 TextSubtitleContent::font_id,
124 /* force the colour to whatever is configured */
125 subtitle->content()->colour(),
126 j.font_size.points (72 * 11),
128 dcp::Time (_subtitles[_next].from.all_as_seconds(), 1000),
129 dcp::Time (_subtitles[_next].to.all_as_seconds(), 1000),
136 subtitle->content()->outline() ? dcp::BORDER : dcp::NONE,
137 subtitle->content()->outline_colour(),
145 subtitle->give_text (content_time_period (_subtitles[_next]), out);
151 list<ContentTimePeriod>
152 TextSubtitleDecoder::image_subtitles_during (ContentTimePeriod, bool) const
154 return list<ContentTimePeriod> ();
157 list<ContentTimePeriod>
158 TextSubtitleDecoder::text_subtitles_during (ContentTimePeriod p, bool starting) const
160 /* XXX: inefficient */
162 list<ContentTimePeriod> d;
164 for (vector<sub::Subtitle>::const_iterator i = _subtitles.begin(); i != _subtitles.end(); ++i) {
165 ContentTimePeriod t = content_time_period (*i);
166 if ((starting && p.contains (t.from)) || (!starting && p.overlaps (t))) {
175 TextSubtitleDecoder::content_time_period (sub::Subtitle s) const
177 return ContentTimePeriod (
178 ContentTime::from_seconds (s.from.all_as_seconds()),
179 ContentTime::from_seconds (s.to.all_as_seconds())