2 Copyright (C) 2013-2014 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 "ffmpeg_subtitle_stream.h"
21 #include "raw_convert.h"
22 #include <libxml++/libxml++.h>
23 #include <boost/foreach.hpp>
31 /** Construct a SubtitleStream from a value returned from to_string().
32 * @param t String returned from to_string().
33 * @param v State file version.
35 FFmpegSubtitleStream::FFmpegSubtitleStream (cxml::ConstNodePtr node)
38 BOOST_FOREACH (cxml::NodePtr i, node->node_children ("Period")) {
41 ContentTime (i->number_child<ContentTime::Type> ("From")),
42 ContentTime (i->number_child<ContentTime::Type> ("To"))
49 FFmpegSubtitleStream::as_xml (xmlpp::Node* root) const
51 FFmpegStream::as_xml (root);
53 for (map<ContentTime, ContentTime>::const_iterator i = _subtitles.begin(); i != _subtitles.end(); ++i) {
54 xmlpp::Node* node = root->add_child ("Period");
55 node->add_child("From")->add_child_text (raw_convert<string> (i->first.get ()));
56 node->add_child("To")->add_child_text (raw_convert<string> (i->second.get ()));
61 FFmpegSubtitleStream::add_subtitle (ContentTimePeriod period)
63 DCPOMATIC_ASSERT (_subtitles.find (period.from) == _subtitles.end ());
64 _subtitles[period.from] = period.to;
67 list<ContentTimePeriod>
68 FFmpegSubtitleStream::subtitles_during (ContentTimePeriod period, bool starting) const
70 list<ContentTimePeriod> d;
72 /* XXX: inefficient */
73 for (map<ContentTime, ContentTime>::const_iterator i = _subtitles.begin(); i != _subtitles.end(); ++i) {
74 if ((starting && period.contains (i->first)) || (!starting && period.overlaps (ContentTimePeriod (i->first, i->second)))) {
75 d.push_back (ContentTimePeriod (i->first, i->second));
83 FFmpegSubtitleStream::find_subtitle_to (ContentTime from) const
85 map<ContentTime, ContentTime>::const_iterator i = _subtitles.find (from);
86 DCPOMATIC_ASSERT (i != _subtitles.end ());
90 /** Add some offset to all the times in the stream */
92 FFmpegSubtitleStream::add_offset (ContentTime offset)
94 map<ContentTime, ContentTime> fixed;
95 for (map<ContentTime, ContentTime>::iterator i = _subtitles.begin(); i != _subtitles.end(); ++i) {
96 fixed[i->first + offset] = i->second + offset;