X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fshuffler.cc;h=a46b26da0f85ee652fdd83f6e18fa1f1f7382e10;hb=0e8a1ab7c41756115f44229053e1e7024530fb32;hp=4b8474ab3028eeb5b99e091aba9d426e15302c8b;hpb=a0eff2446835a2a29d751a4810fe182c486a2eb6;p=dcpomatic.git

diff --git a/src/lib/shuffler.cc b/src/lib/shuffler.cc
index 4b8474ab3..a46b26da0 100644
--- a/src/lib/shuffler.cc
+++ b/src/lib/shuffler.cc
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2018 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2018-2019 Carl Hetherington <cth@carlh.net>
 
     This file is part of DCP-o-matic.
 
@@ -21,6 +21,7 @@
 #include "shuffler.h"
 #include "content_video.h"
 #include "dcpomatic_assert.h"
+#include "dcpomatic_log.h"
 #include <boost/foreach.hpp>
 #include <iostream>
 
@@ -29,6 +30,8 @@ using boost::weak_ptr;
 using boost::shared_ptr;
 using boost::optional;
 
+int const Shuffler::_max_size = 64;
+
 struct Comparator
 {
 	bool operator()(Shuffler::Store const & a, Shuffler::Store const & b) {
@@ -42,16 +45,17 @@ struct Comparator
 void
 Shuffler::video (weak_ptr<Piece> weak_piece, ContentVideo video)
 {
-	/* Something has gong wrong if our store gets too big */
-	DCPOMATIC_ASSERT (_store.size() != 8);
-	/* We should only ever see 3D_LEFT / 3D_RIGHT */
-	DCPOMATIC_ASSERT (video.eyes == EYES_LEFT || video.eyes == EYES_RIGHT);
+	if (video.eyes != EYES_LEFT && video.eyes != EYES_RIGHT) {
+		/* Pass through anything that we don't care about */
+		Video (weak_piece, video);
+		return;
+	}
 
 	shared_ptr<Piece> piece = weak_piece.lock ();
 	DCPOMATIC_ASSERT (piece);
 
-	if (!_last) {
-		/* We haven't seen anything since the last clear() so assume everything is OK */
+	if (!_last && video.eyes == EYES_LEFT) {
+		/* We haven't seen anything since the last clear() and we have some eyes-left so assume everything is OK */
 		Video (weak_piece, video);
 		_last = video;
 		return;
@@ -60,14 +64,27 @@ Shuffler::video (weak_ptr<Piece> weak_piece, ContentVideo video)
 	_store.push_back (make_pair (weak_piece, video));
 	_store.sort (Comparator());
 
-	while (
-		!_store.empty() &&
-		(
-			(_store.front().second.frame == _last->frame && _store.front().second.eyes == EYES_RIGHT && _last->eyes == EYES_LEFT) ||
-			(_store.front().second.frame == (_last->frame + 1) && _store.front().second.eyes == EYES_LEFT && _last->eyes == EYES_RIGHT) ||
-			_store.size() > 8
-			)
-		) {
+	while (true) {
+
+		bool const store_front_in_sequence =
+			!_store.empty() &&
+			_last &&
+			(
+				(_store.front().second.frame == _last->frame       && _store.front().second.eyes == EYES_RIGHT && _last->eyes == EYES_LEFT) ||
+				(_store.front().second.frame >= (_last->frame + 1) && _store.front().second.eyes == EYES_LEFT  && _last->eyes == EYES_RIGHT)
+				);
+
+		if (!store_front_in_sequence && _store.size() <= _max_size) {
+			/* store_front_in_sequence means everything is ok; otherwise if the store is getting too big just
+			   start emitting things as best we can.  This can easily happen if, for example, there is only content
+			   for one eye in some part of the timeline.
+			*/
+			break;
+		}
+
+		if (_store.size() > _max_size) {
+			LOG_WARNING ("Shuffler is full after receiving frame %1; 3D sync may be incorrect.", video.frame);
+		}
 
 		Video (_store.front().first, _store.front().second);
 		_last = _store.front().second;
@@ -78,6 +95,14 @@ Shuffler::video (weak_ptr<Piece> weak_piece, ContentVideo video)
 void
 Shuffler::clear ()
 {
-	VideoAdjuster::clear ();
+	_store.clear ();
 	_last = optional<ContentVideo>();
 }
+
+void
+Shuffler::flush ()
+{
+	BOOST_FOREACH (Store i, _store) {
+		Video (i.first, i.second);
+	}
+}