2 Copyright (C) 2018-2020 Carl Hetherington <cth@carlh.net>
4 This file is part of DCP-o-matic.
6 DCP-o-matic is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 DCP-o-matic is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
22 #include "content_video.h"
23 #include "dcpomatic_assert.h"
24 #include "dcpomatic_log.h"
25 #include <boost/foreach.hpp>
31 using boost::weak_ptr;
32 using boost::shared_ptr;
33 using boost::optional;
35 int const Shuffler::_max_size = 64;
39 bool operator()(Shuffler::Store const & a, Shuffler::Store const & b) {
40 if (a.second.frame != b.second.frame) {
41 return a.second.frame < b.second.frame;
43 return a.second.eyes < b.second.eyes;
48 Shuffler::video (weak_ptr<Piece> weak_piece, ContentVideo video)
50 LOG_DEBUG_THREED ("Shuffler::video frame=%1 eyes=%2 part=%3", video.frame, static_cast<int>(video.eyes), static_cast<int>(video.part));
52 if (video.eyes != EYES_LEFT && video.eyes != EYES_RIGHT) {
53 /* Pass through anything that we don't care about */
54 Video (weak_piece, video);
58 shared_ptr<Piece> piece = weak_piece.lock ();
59 DCPOMATIC_ASSERT (piece);
61 if (!_last && video.eyes == EYES_LEFT) {
62 LOG_DEBUG_THREED_NC ("Shuffler first after clear");
63 /* We haven't seen anything since the last clear() and we have some eyes-left so assume everything is OK */
64 Video (weak_piece, video);
69 _store.push_back (make_pair (weak_piece, video));
70 _store.sort (Comparator());
74 bool const store_front_in_sequence =
78 (_store.front().second.frame == _last->frame && _store.front().second.eyes == EYES_RIGHT && _last->eyes == EYES_LEFT) ||
79 (_store.front().second.frame >= (_last->frame + 1) && _store.front().second.eyes == EYES_LEFT && _last->eyes == EYES_RIGHT)
82 if (!store_front_in_sequence) {
83 string const store = _store.empty() ? "store empty" : String::compose("store front frame=%1 eyes=%2", _store.front().second.frame, static_cast<int>(_store.front().second.eyes));
84 string const last = _last ? String::compose("last frame=%1 eyes=%2", _last->frame, static_cast<int>(_last->eyes)) : "no last";
85 LOG_DEBUG_THREED("Shuffler not in sequence: %1 %2", store, last);
88 if (!store_front_in_sequence && _store.size() <= _max_size) {
89 /* store_front_in_sequence means everything is ok; otherwise if the store is getting too big just
90 start emitting things as best we can. This can easily happen if, for example, there is only content
91 for one eye in some part of the timeline.
96 if (_store.size() > _max_size) {
97 LOG_WARNING ("Shuffler is full after receiving frame %1; 3D sync may be incorrect.", video.frame);
100 LOG_DEBUG_THREED("Shuffler emits frame=%1 eyes=%2 store=%3", _store.front().second.frame, static_cast<int>(_store.front().second.eyes), _store.size());
101 Video (_store.front().first, _store.front().second);
102 _last = _store.front().second;
110 LOG_DEBUG_THREED_NC ("Shuffler::clear");
112 _last = optional<ContentVideo>();
118 BOOST_FOREACH (Store i, _store) {
119 Video (i.first, i.second);