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/*
Copyright (C) 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 "dcp_subtitle_decoder.h"
#include "dcp_subtitle_content.h"
#include <dcp/interop_subtitle_asset.h>
using std::list;
using std::cout;
using boost::shared_ptr;
DCPSubtitleDecoder::DCPSubtitleDecoder (shared_ptr<const DCPSubtitleContent> content)
: SubtitleDecoder (content)
{
shared_ptr<dcp::SubtitleAsset> c (load (content->path (0)));
_subtitles = c->subtitles ();
_next = _subtitles.begin ();
}
void
DCPSubtitleDecoder::seek (ContentTime time, bool accurate)
{
SubtitleDecoder::seek (time, accurate);
_next = _subtitles.begin ();
list<dcp::SubtitleString>::const_iterator i = _subtitles.begin ();
while (i != _subtitles.end() && ContentTime::from_seconds (_next->in().as_seconds()) < time) {
++i;
}
}
bool
DCPSubtitleDecoder::pass ()
{
if (_next == _subtitles.end ()) {
return true;
}
list<dcp::SubtitleString> s;
s.push_back (*_next);
text_subtitle (content_time_period (*_next), s);
++_next;
return false;
}
list<ContentTimePeriod>
DCPSubtitleDecoder::image_subtitles_during (ContentTimePeriod, bool) const
{
return list<ContentTimePeriod> ();
}
list<ContentTimePeriod>
DCPSubtitleDecoder::text_subtitles_during (ContentTimePeriod p, bool starting) const
{
/* XXX: inefficient */
list<ContentTimePeriod> d;
for (list<dcp::SubtitleString>::const_iterator i = _subtitles.begin(); i != _subtitles.end(); ++i) {
ContentTimePeriod period = content_time_period (*i);
if ((starting && p.contains (period.from)) || (!starting && p.overlaps (period))) {
d.push_back (period);
}
}
return d;
}
ContentTimePeriod
DCPSubtitleDecoder::content_time_period (dcp::SubtitleString s) const
{
return ContentTimePeriod (
ContentTime::from_seconds (s.in().as_seconds ()),
ContentTime::from_seconds (s.out().as_seconds ())
);
}
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