/*
- Copyright (C) 2013 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2013-2016 Carl Hetherington <cth@carlh.net>
- This program is free software; you can redistribute it and/or modify
+ This file is part of DCP-o-matic.
+
+ DCP-o-matic 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,
+ DCP-o-matic 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.
+ along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
-#include <boost/shared_ptr.hpp>
#include "subtitle_decoder.h"
+#include "subtitle_content.h"
+#include <boost/shared_ptr.hpp>
+#include <boost/foreach.hpp>
+#include <iostream>
using std::list;
+using std::cout;
using boost::shared_ptr;
using boost::optional;
+using boost::function;
-SubtitleDecoder::SubtitleDecoder (shared_ptr<const Film> f)
- : Decoder (f)
+SubtitleDecoder::SubtitleDecoder (
+ Decoder* parent,
+ shared_ptr<const SubtitleContent> c,
+ function<list<ContentTimePeriod> (ContentTimePeriod, bool)> image_during,
+ function<list<ContentTimePeriod> (ContentTimePeriod, bool)> text_during
+ )
+ : _parent (parent)
+ , _content (c)
+ , _image_during (image_during)
+ , _text_during (text_during)
{
}
-
/** Called by subclasses when an image subtitle is ready.
- * Image may be 0 to say that there is no current subtitle.
+ * @param period Period of the subtitle.
+ * @param image Subtitle image.
+ * @param rect Area expressed as a fraction of the video frame that this subtitle
+ * is for (e.g. a width of 0.5 means the width of the subtitle is half the width
+ * of the video frame)
*/
void
-SubtitleDecoder::image_subtitle (shared_ptr<Image> image, dcpomatic::Rect<double> rect, ContentTime from, ContentTime to)
+SubtitleDecoder::give_image (ContentTimePeriod period, shared_ptr<Image> image, dcpomatic::Rect<double> rect)
+{
+ _decoded_image.push_back (ContentImageSubtitle (period, image, rect));
+}
+
+void
+SubtitleDecoder::give_text (ContentTimePeriod period, list<dcp::SubtitleString> s)
+{
+ _decoded_text.push_back (ContentTextSubtitle (period, s));
+}
+
+/** @param sp Full periods of subtitles that are showing or starting during the specified period */
+template <class T>
+list<T>
+SubtitleDecoder::get (list<T> const & subs, list<ContentTimePeriod> const & sp, ContentTimePeriod period, bool starting, bool accurate)
+{
+ if (sp.empty ()) {
+ /* Nothing in this period */
+ return list<T> ();
+ }
+
+ /* Seek if what we want is before what we have, or a more than a little bit after */
+ if (subs.empty() || sp.back().to < subs.front().period().from || sp.front().from > (subs.back().period().to + ContentTime::from_seconds (1))) {
+ _parent->seek (sp.front().from, true);
+ }
+
+ /* Now enough pass() calls will either:
+ * (a) give us what we want, or
+ * (b) hit the end of the decoder.
+ */
+ while (!_parent->pass(Decoder::PASS_REASON_SUBTITLE, accurate) && (subs.empty() || (subs.back().period().to < sp.back().to))) {}
+
+ /* Now look for what we wanted in the data we have collected */
+ /* XXX: inefficient */
+
+ list<T> out;
+ for (typename list<T>::const_iterator i = subs.begin(); i != subs.end(); ++i) {
+ if ((starting && period.contains (i->period().from)) || (!starting && period.overlaps (i->period ()))) {
+ out.push_back (*i);
+ }
+ }
+
+ /* Discard anything in _decoded_image_subtitles that is outside 5 seconds either side of period */
+
+ list<ContentImageSubtitle>::iterator i = _decoded_image.begin();
+ while (i != _decoded_image.end()) {
+ list<ContentImageSubtitle>::iterator tmp = i;
+ ++tmp;
+
+ if (
+ i->period().to < (period.from - ContentTime::from_seconds (5)) ||
+ i->period().from > (period.to + ContentTime::from_seconds (5))
+ ) {
+ _decoded_image.erase (i);
+ }
+
+ i = tmp;
+ }
+
+ return out;
+}
+
+list<ContentTextSubtitle>
+SubtitleDecoder::get_text (ContentTimePeriod period, bool starting, bool accurate)
+{
+ return get<ContentTextSubtitle> (_decoded_text, _text_during (period, starting), period, starting, accurate);
+}
+
+list<ContentImageSubtitle>
+SubtitleDecoder::get_image (ContentTimePeriod period, bool starting, bool accurate)
{
- _pending.push_back (shared_ptr<DecodedImageSubtitle> (new DecodedImageSubtitle (image, rect, from, to)));
+ return get<ContentImageSubtitle> (_decoded_image, _image_during (period, starting), period, starting, accurate);
}
void
-SubtitleDecoder::text_subtitle (list<dcp::SubtitleString> s)
+SubtitleDecoder::seek (ContentTime, bool)
{
- _pending.push_back (shared_ptr<DecodedTextSubtitle> (new DecodedTextSubtitle (s)));
+ _decoded_text.clear ();
+ _decoded_image.clear ();
}
projects / dcpomatic.git / blobdiff