2 Copyright (C) 2018-2021 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/>.
23 #include "content_video.h"
24 #include "dcpomatic_assert.h"
25 #include "dcpomatic_log.h"
31 using std::shared_ptr;
34 using boost::optional;
37 int const Shuffler::_max_size = 64;
42 bool operator()(Shuffler::Store const & a, Shuffler::Store const & b) {
43 if (a.second.frame != b.second.frame) {
44 return a.second.frame < b.second.frame;
46 return a.second.eyes < b.second.eyes;
52 Shuffler::video (weak_ptr<Piece> weak_piece, ContentVideo video)
54 LOG_DEBUG_THREE_D ("Shuffler::video frame=%1 eyes=%2 part=%3", video.frame, static_cast<int>(video.eyes), static_cast<int>(video.part));
56 if (video.eyes != Eyes::LEFT && video.eyes != Eyes::RIGHT) {
57 /* Pass through anything that we don't care about */
58 Video (weak_piece, video);
62 auto piece = weak_piece.lock ();
63 DCPOMATIC_ASSERT (piece);
65 if (!_last && video.eyes == Eyes::LEFT) {
66 LOG_DEBUG_THREE_D_NC ("Shuffler first after clear");
67 /* We haven't seen anything since the last clear() and we have some eyes-left so assume everything is OK */
68 Video (weak_piece, video);
73 _store.push_back (make_pair (weak_piece, video));
74 _store.sort (Comparator());
78 bool const store_front_in_sequence =
82 (_store.front().second.frame == _last->frame && _store.front().second.eyes == Eyes::RIGHT && _last->eyes == Eyes::LEFT) ||
83 (_store.front().second.frame >= (_last->frame + 1) && _store.front().second.eyes == Eyes::LEFT && _last->eyes == Eyes::RIGHT)
86 if (!store_front_in_sequence) {
87 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));
88 string const last = _last ? String::compose("last frame=%1 eyes=%2", _last->frame, static_cast<int>(_last->eyes)) : "no last";
89 LOG_DEBUG_THREE_D("Shuffler not in sequence: %1 %2", store, last);
92 if (!store_front_in_sequence && _store.size() <= _max_size) {
93 /* store_front_in_sequence means everything is ok; otherwise if the store is getting too big just
94 start emitting things as best we can. This can easily happen if, for example, there is only content
95 for one eye in some part of the timeline.
100 if (_store.size() > _max_size) {
101 LOG_WARNING ("Shuffler is full after receiving frame %1; 3D sync may be incorrect.", video.frame);
104 LOG_DEBUG_THREE_D("Shuffler emits frame=%1 eyes=%2 store=%3", _store.front().second.frame, static_cast<int>(_store.front().second.eyes), _store.size());
105 Video (_store.front().first, _store.front().second);
106 _last = _store.front().second;
115 LOG_DEBUG_THREE_D_NC ("Shuffler::clear");
117 _last = optional<ContentVideo>();
124 for (auto i: _store) {
125 Video (i.first, i.second);