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 "dcp_subtitle_decoder.h"
22 #include "dcp_subtitle_content.h"
23 #include <dcp/interop_subtitle_asset.h>
28 using boost::shared_ptr;
31 DCPSubtitleDecoder::DCPSubtitleDecoder (shared_ptr<const DCPSubtitleContent> content)
37 bind (&DCPSubtitleDecoder::image_subtitles_during, this, _1, _2),
38 bind (&DCPSubtitleDecoder::text_subtitles_during, this, _1, _2)
42 shared_ptr<dcp::SubtitleAsset> c (load (content->path (0)));
43 _subtitles = c->subtitles ();
44 _next = _subtitles.begin ();
48 DCPSubtitleDecoder::seek (ContentTime time, bool accurate)
50 subtitle->seek (time, accurate);
52 _next = _subtitles.begin ();
53 list<dcp::SubtitleString>::const_iterator i = _subtitles.begin ();
54 while (i != _subtitles.end() && ContentTime::from_seconds (_next->in().as_seconds()) < time) {
60 DCPSubtitleDecoder::pass (PassReason, bool)
62 if (_next == _subtitles.end ()) {
66 /* Gather all subtitles with the same time period that are next
67 on the list. We must emit all subtitles for the same time
68 period with the same text_subtitle() call otherwise the
69 SubtitleDecoder will assume there is nothing else at the
70 time of emit the first.
73 list<dcp::SubtitleString> s;
74 ContentTimePeriod const p = content_time_period (*_next);
76 while (_next != _subtitles.end () && content_time_period (*_next) == p) {
81 subtitle->give_text (p, s);
86 list<ContentTimePeriod>
87 DCPSubtitleDecoder::image_subtitles_during (ContentTimePeriod, bool) const
89 return list<ContentTimePeriod> ();
92 list<ContentTimePeriod>
93 DCPSubtitleDecoder::text_subtitles_during (ContentTimePeriod p, bool starting) const
95 /* XXX: inefficient */
97 list<ContentTimePeriod> d;
99 for (list<dcp::SubtitleString>::const_iterator i = _subtitles.begin(); i != _subtitles.end(); ++i) {
100 ContentTimePeriod period = content_time_period (*i);
101 if ((starting && p.contains(period.from)) || (!starting && p.overlap(period))) {
102 d.push_back (period);
113 DCPSubtitleDecoder::content_time_period (dcp::SubtitleString s) const
115 return ContentTimePeriod (
116 ContentTime::from_seconds (s.in().as_seconds ()),
117 ContentTime::from_seconds (s.out().as_seconds ())