diff options
Diffstat (limited to 'src/lib/subtitle_decoder.cc')
| -rw-r--r-- | src/lib/subtitle_decoder.cc | 74 |
1 files changed, 67 insertions, 7 deletions
diff --git a/src/lib/subtitle_decoder.cc b/src/lib/subtitle_decoder.cc index c06f3d718..13cf481c8 100644 --- a/src/lib/subtitle_decoder.cc +++ b/src/lib/subtitle_decoder.cc @@ -1,5 +1,5 @@ /* - 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 @@ -19,21 +19,81 @@ #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 (shared_ptr<const Film> f) - : Decoder (f) +SubtitleDecoder::SubtitleDecoder (shared_ptr<const SubtitleContent> c) + : _subtitle_content (c) { } - -/** Called by subclasses when a subtitle is ready. +/** Called by subclasses when an image subtitle is ready. * Image may be 0 to say that there is no current subtitle. */ void -SubtitleDecoder::subtitle (shared_ptr<Image> image, dcpomatic::Rect<double> rect, Time from, Time to) +SubtitleDecoder::image_subtitle (ContentTimePeriod period, shared_ptr<Image> image, dcpomatic::Rect<double> rect) +{ + _decoded_image_subtitles.push_back (shared_ptr<ContentImageSubtitle> (new ContentImageSubtitle (period, image, rect))); +} + +void +SubtitleDecoder::text_subtitle (list<dcp::SubtitleString> s) +{ + _decoded_text_subtitles.push_back (shared_ptr<ContentTextSubtitle> (new ContentTextSubtitle (s))); +} + +template <class T> +list<shared_ptr<T> > +SubtitleDecoder::get (list<shared_ptr<T> > const & subs, ContentTimePeriod period) +{ + if (!_subtitle_content->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)->period().from <= period.to && (*i)->period().to >= period.from) { + out.push_back (*i); + } + } + + return out; +} + +list<shared_ptr<ContentTextSubtitle> > +SubtitleDecoder::get_text_subtitles (ContentTimePeriod period) +{ + return get<ContentTextSubtitle> (_decoded_text_subtitles, period); +} + +list<shared_ptr<ContentImageSubtitle> > +SubtitleDecoder::get_image_subtitles (ContentTimePeriod period) +{ + return get<ContentImageSubtitle> (_decoded_image_subtitles, period); +} + +void +SubtitleDecoder::seek (ContentTime, bool) { - Subtitle (image, rect, from, to); + _decoded_text_subtitles.clear (); + _decoded_image_subtitles.clear (); } |