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"
26 using boost::shared_ptr;
28 VideoView::VideoView (FilmViewer* viewer)
30 #ifdef DCPOMATIC_VARIANT_SWAROOP
31 , _in_watermark (false)
33 , _state_timer ("viewer")
34 , _video_frame_rate (0)
46 boost::mutex::scoped_lock lm (_mutex);
47 _player_video.first.reset ();
48 _player_video.second = dcpomatic::DCPTime ();
51 /** Could be called from any thread.
52 * @param non_blocking true to return false quickly if no video is available quickly.
53 * @return false if we gave up because it would take too long, otherwise true.
56 VideoView::get_next_frame (bool non_blocking)
58 if (length() == dcpomatic::DCPTime()) {
62 shared_ptr<Butler> butler = _viewer->butler ();
63 DCPOMATIC_ASSERT (butler);
66 boost::mutex::scoped_lock lm (_mutex);
70 _player_video = butler->get_video (!non_blocking, &e);
71 if (!_player_video.first && e == Butler::AGAIN) {
75 _player_video.first &&
77 _eyes != _player_video.first->eyes() &&
78 _player_video.first->eyes() != EYES_BOTH
85 VideoView::one_video_frame () const
87 return dcpomatic::DCPTime::from_frames (1, video_frame_rate());
90 /** @return Time in ms until the next frame is due */
92 VideoView::time_until_next_frame () const
94 if (length() == dcpomatic::DCPTime()) {
95 /* There's no content, so this doesn't matter */
99 dcpomatic::DCPTime const next = position() + one_video_frame();
100 dcpomatic::DCPTime const time = _viewer->audio_time().get_value_or(position());
104 return (next.seconds() - time.seconds()) * 1000;
110 boost::mutex::scoped_lock lm (_mutex);