2 Copyright (C) 2019 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/>.
21 #include "video_view.h"
23 #include "film_viewer.h"
24 #include "lib/butler.h"
29 boost::mutex::scoped_lock lm (_mutex);
30 _player_video.first.reset ();
31 _player_video.second = dcpomatic::DCPTime ();
34 /** @param non_blocking true to return false quickly if no video is available quickly.
35 * @return false if we gave up because it would take too long, otherwise true.
38 VideoView::get_next_frame (bool non_blocking)
40 if (_length == dcpomatic::DCPTime()) {
44 DCPOMATIC_ASSERT (_viewer->butler());
47 boost::mutex::scoped_lock lm (_mutex);
51 _player_video = _viewer->butler()->get_video (!non_blocking, &e);
52 if (!_player_video.first && e == Butler::AGAIN) {
56 _player_video.first &&
57 _viewer->film()->three_d() &&
58 _viewer->_eyes != _player_video.first->eyes() &&
59 _player_video.first->eyes() != EYES_BOTH
62 /* XXX_b: this is called from the GL thread so it shouldn't be opening error dialogs */
64 _viewer->butler()->rethrow ();
65 } catch (DecodeError& e) {
66 error_dialog (get(), e.what());
73 VideoView::one_video_frame () const
75 return dcpomatic::DCPTime::from_frames (1, video_frame_rate());
78 /** @return Time in ms until the next frame is due */
80 VideoView::time_until_next_frame () const
82 if (length() == dcpomatic::DCPTime()) {
83 /* There's no content, so this doesn't matter */
87 dcpomatic::DCPTime const next = position() + one_video_frame();
88 dcpomatic::DCPTime const time = _viewer->audio_time().get_value_or(position());
92 return (next.seconds() - time.seconds()) * 1000;