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/*
Copyright (C) 2013-2014 Carl Hetherington <cth@carlh.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "ffmpeg_subtitle_stream.h"
#include "raw_convert.h"
#include <libxml++/libxml++.h>
#include <boost/foreach.hpp>
using std::string;
using std::map;
using std::list;
/** Construct a SubtitleStream from a value returned from to_string().
* @param t String returned from to_string().
* @param v State file version.
*/
FFmpegSubtitleStream::FFmpegSubtitleStream (cxml::ConstNodePtr node)
: FFmpegStream (node)
{
BOOST_FOREACH (cxml::NodePtr i, node->node_children ("Period")) {
add_subtitle (
ContentTimePeriod (
ContentTime (i->number_child<ContentTime::Type> ("From")),
ContentTime (i->number_child<ContentTime::Type> ("To"))
)
);
}
}
void
FFmpegSubtitleStream::as_xml (xmlpp::Node* root) const
{
FFmpegStream::as_xml (root);
for (map<ContentTime, ContentTime>::const_iterator i = _subtitles.begin(); i != _subtitles.end(); ++i) {
xmlpp::Node* node = root->add_child ("Period");
node->add_child("From")->add_child_text (raw_convert<string> (i->first.get ()));
node->add_child("To")->add_child_text (raw_convert<string> (i->second.get ()));
}
}
void
FFmpegSubtitleStream::add_subtitle (ContentTimePeriod period)
{
DCPOMATIC_ASSERT (_subtitles.find (period.from) == _subtitles.end ());
_subtitles[period.from] = period.to;
}
list<ContentTimePeriod>
FFmpegSubtitleStream::subtitles_during (ContentTimePeriod period, bool starting) const
{
list<ContentTimePeriod> d;
/* XXX: inefficient */
for (map<ContentTime, ContentTime>::const_iterator i = _subtitles.begin(); i != _subtitles.end(); ++i) {
if ((starting && period.contains (i->first)) || (!starting && period.overlaps (ContentTimePeriod (i->first, i->second)))) {
d.push_back (ContentTimePeriod (i->first, i->second));
}
}
return d;
}
ContentTime
FFmpegSubtitleStream::find_subtitle_to (ContentTime from) const
{
map<ContentTime, ContentTime>::const_iterator i = _subtitles.find (from);
DCPOMATIC_ASSERT (i != _subtitles.end ());
return i->second;
}
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