/*
- Copyright (C) 2012-2015 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2021 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
*/
+
#include "decoder.h"
-#include "decoder_part.h"
+#include "video_decoder.h"
+#include "audio_decoder.h"
+#include "text_decoder.h"
+#include <boost/optional.hpp>
#include <iostream>
+
using std::cout;
using boost::optional;
+using std::shared_ptr;
+using std::weak_ptr;
+using namespace dcpomatic;
+
+
+Decoder::Decoder (weak_ptr<const Film> film)
+ : WeakConstFilm (film)
+{
+
+}
+
+
+/** @return Earliest time of content that the next pass() will emit */
+ContentTime
+Decoder::position () const
+{
+ optional<ContentTime> pos;
+ auto f = film();
+
+ if (video && !video->ignore() && (!pos || video->position(f).get_value_or(ContentTime()) < *pos)) {
+ pos = video->position(f);
+ }
+
+ if (audio && !audio->ignore() && (!pos || audio->position(f).get_value_or(ContentTime()) < *pos)) {
+ pos = audio->position(f);
+ }
+
+ /* Only decide position based on subtitle sources if there is nothing else
+ to go on. Otherwise we can have problems with muxed sources which have
+ (for example) video, audio and a subtitle. If the subtitle data runs out
+ before the video/audio the position() call will return the position of the
+ end of the subs. This causes this file to be pass()ed in favour of others,
+ which can cause bugs like #1581.
+ */
+ if (!pos) {
+ for (auto i: text) {
+ if (!i->ignore() && (!pos || i->position(f) < *pos)) {
+ pos = i->position(f);
+ }
+ }
+ }
+
+ return pos.get_value_or(ContentTime());
+}
+
void
-Decoder::maybe_seek (optional<ContentTime> position, ContentTime time, bool accurate)
+Decoder::seek (ContentTime, bool)
{
- if (position && (time >= position.get() && time < (position.get() + ContentTime::from_seconds(1)))) {
- /* No need to seek: caller should just pass() */
- return;
+ if (video) {
+ video->seek ();
}
+ if (audio) {
+ audio->seek ();
+ }
+ for (auto i: text) {
+ i->seek ();
+ }
+}
- seek (time, accurate);
+
+shared_ptr<TextDecoder>
+Decoder::only_text () const
+{
+ DCPOMATIC_ASSERT (text.size() < 2);
+ if (text.empty()) {
+ return {};
+ }
+ return text.front();
}