--- /dev/null
+/*
+ Copyright (C) 2018 Carl Hetherington <cth@carlh.net>
+
+ 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.
+
+ 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 DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+#include "shuffler.h"
+#include "content_video.h"
+#include "dcpomatic_assert.h"
+#include <boost/foreach.hpp>
+#include <iostream>
+
+using std::make_pair;
+using boost::weak_ptr;
+using boost::shared_ptr;
+using boost::optional;
+
+struct Comparator
+{
+ bool operator()(Shuffler::Store const & a, Shuffler::Store const & b) {
+ if (a.second.frame != b.second.frame) {
+ return a.second.frame < b.second.frame;
+ }
+ return a.second.eyes < b.second.eyes;
+ }
+};
+
+void
+Shuffler::video (weak_ptr<Piece> weak_piece, ContentVideo video)
+{
+ std::cout << "shuffler gets " << video.frame << " " << video.eyes << "\n";
+
+ /* 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);
+
+ 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 */
+ Video (weak_piece, video);
+ _last = video;
+ return;
+ }
+
+ _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
+ )
+ ) {
+
+ std::cout << "shuffler emits " << _store.front().second.frame << " " << _store.front().second.eyes << "\n";
+ Video (_store.front().first, _store.front().second);
+ _last = _store.front().second;
+ _store.pop_front ();
+ }
+}
+
+void
+Shuffler::clear ()
+{
+ _last = optional<ContentVideo>();
+}
+
+void
+Shuffler::flush ()
+{
+ BOOST_FOREACH (Store i, _store) {
+ Video (i.first, i.second);
+ }
+}