/*
- Copyright (C) 2013 Carl Hetherington <cth@carlh.net>
+ 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
#include <boost/shared_ptr.hpp>
#include "subtitle_decoder.h"
+#include "subtitle_content.h"
using std::list;
+using std::cout;
using boost::shared_ptr;
using boost::optional;
-SubtitleDecoder::SubtitleDecoder ()
+SubtitleDecoder::SubtitleDecoder (shared_ptr<const SubtitleContent> c)
+ : _subtitle_content (c)
{
}
* Image may be 0 to say that there is no current subtitle.
*/
void
-SubtitleDecoder::image_subtitle (ContentTime from, ContentTime to, shared_ptr<Image> image, dcpomatic::Rect<double> rect)
+SubtitleDecoder::image_subtitle (ContentTimePeriod period, shared_ptr<Image> image, dcpomatic::Rect<double> rect)
{
- _decoded_image_subtitles.push_back (shared_ptr<ContentImageSubtitle> (new ContentImageSubtitle (from, to, image, rect)));
+ _decoded_image_subtitles.push_back (shared_ptr<ContentImageSubtitle> (new ContentImageSubtitle (period, image, rect)));
}
void
template <class T>
list<shared_ptr<T> >
-get (list<shared_ptr<T> > const & subs, ContentTime from, ContentTime to)
+SubtitleDecoder::get (list<shared_ptr<T> > const & subs, ContentTimePeriod period)
{
+ if (!has_subtitle_during (period)) {
+ return list<shared_ptr<T> > ();
+ }
+
+ if (subs.empty() || period.from < subs.front()->period().from || period.to > (subs.back()->period().to + ContentTime::from_seconds (10))) {
+ /* Either we have no decoded data, or what we do have is a long way from what we want: seek */
+ seek (period.from, true);
+ }
+
+ /* Now enough pass() calls will either:
+ * (a) give us what we want, or
+ * (b) hit the end of the decoder.
+ */
+ while (!pass() && (subs.empty() || (subs.front()->period().from > period.from || period.to < subs.back()->period().to))) {}
+
+ /* Now look for what we wanted in the data we have collected */
/* XXX: inefficient */
+
list<shared_ptr<T> > out;
for (typename list<shared_ptr<T> >::const_iterator i = subs.begin(); i != subs.end(); ++i) {
- if ((*i)->from() <= to && (*i)->to() >= from) {
+ if ((*i)->period().overlaps (period)) {
out.push_back (*i);
}
}
}
list<shared_ptr<ContentTextSubtitle> >
-SubtitleDecoder::get_text_subtitles (ContentTime from, ContentTime to)
+SubtitleDecoder::get_text_subtitles (ContentTimePeriod period)
{
- return get<ContentTextSubtitle> (_decoded_text_subtitles, from, to);
+ return get<ContentTextSubtitle> (_decoded_text_subtitles, period);
}
list<shared_ptr<ContentImageSubtitle> >
-SubtitleDecoder::get_image_subtitles (ContentTime from, ContentTime to)
+SubtitleDecoder::get_image_subtitles (ContentTimePeriod period)
+{
+ return get<ContentImageSubtitle> (_decoded_image_subtitles, period);
+}
+
+void
+SubtitleDecoder::seek (ContentTime, bool)
{
- return get<ContentImageSubtitle> (_decoded_image_subtitles, from, to);
+ _decoded_text_subtitles.clear ();
+ _decoded_image_subtitles.clear ();
}