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, shared_ptr<Log> log)
33 subtitle.reset (new SubtitleDecoder (this, content->subtitle, log));
35 shared_ptr<dcp::SubtitleAsset> c (load (content->path (0)));
36 _subtitles = c->subtitles ();
37 _next = _subtitles.begin ();
41 DCPSubtitleDecoder::seek (ContentTime time, bool accurate)
43 Decoder::seek (time, accurate);
45 _next = _subtitles.begin ();
46 list<dcp::SubtitleString>::const_iterator i = _subtitles.begin ();
47 while (i != _subtitles.end() && ContentTime::from_seconds (_next->in().as_seconds()) < time) {
53 DCPSubtitleDecoder::pass ()
55 if (_next == _subtitles.end ()) {
59 /* Gather all subtitles with the same time period that are next
60 on the list. We must emit all subtitles for the same time
61 period with the same text_subtitle() call otherwise the
62 SubtitleDecoder will assume there is nothing else at the
63 time of emit the first.
66 list<dcp::SubtitleString> s;
67 ContentTimePeriod const p = content_time_period (*_next);
69 while (_next != _subtitles.end () && content_time_period (*_next) == p) {
74 subtitle->emit_text (p, s);
79 DCPSubtitleDecoder::content_time_period (dcp::SubtitleString s) const
81 return ContentTimePeriod (
82 ContentTime::from_seconds (s.in().as_seconds ()),
83 ContentTime::from_seconds (s.out().as_seconds ())