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 #ifndef DCPOMATIC_VIDEO_VIEW_H
22 #define DCPOMATIC_VIDEO_VIEW_H
24 #include "lib/dcpomatic_time.h"
25 #include "lib/timer.h"
26 #include "lib/types.h"
27 #include "lib/exception_store.h"
28 #include <boost/signals2.hpp>
29 #include <boost/thread.hpp>
30 #include <boost/noncopyable.hpp>
38 class VideoView : public ExceptionStore, public boost::noncopyable
41 VideoView (FilmViewer* viewer);
42 virtual ~VideoView () {}
44 /** @return the thing displaying the image */
45 virtual wxWindow* get () const = 0;
46 /** Re-make and display the image from the current _player_video */
47 virtual void update () = 0;
48 /** Called when playback starts */
49 virtual void start ();
50 /** Called when playback stops */
51 virtual void stop () {}
53 enum NextFrameResult {
59 /** Get the next frame and display it; used after seek */
60 virtual NextFrameResult display_next_frame (bool) = 0;
63 bool reset_metadata (std::shared_ptr<const Film> film, dcp::Size player_video_container_size);
65 /** Emitted from the GUI thread when our display changes in size */
66 boost::signals2::signal<void()> Sized;
69 /* Accessors for FilmViewer */
71 int dropped () const {
72 boost::mutex::scoped_lock lm (_mutex);
76 int errored () const {
77 boost::mutex::scoped_lock lm (_mutex);
82 boost::mutex::scoped_lock lm (_mutex);
86 StateTimer const & state_timer () const {
90 dcpomatic::DCPTime position () const {
91 boost::mutex::scoped_lock lm (_mutex);
92 return _player_video.second;
96 /* Setters for FilmViewer so it can tell us our state and
97 * we can then use (thread) safely.
100 void set_video_frame_rate (int r) {
101 boost::mutex::scoped_lock lm (_mutex);
102 _video_frame_rate = r;
105 void set_length (dcpomatic::DCPTime len) {
106 boost::mutex::scoped_lock lm (_mutex);
110 void set_eyes (Eyes eyes) {
111 boost::mutex::scoped_lock lm (_mutex);
115 void set_three_d (bool t) {
116 boost::mutex::scoped_lock lm (_mutex);
121 NextFrameResult get_next_frame (bool non_blocking);
122 boost::optional<int> time_until_next_frame () const;
123 dcpomatic::DCPTime one_video_frame () const;
125 int video_frame_rate () const {
126 boost::mutex::scoped_lock lm (_mutex);
127 return _video_frame_rate;
130 dcpomatic::DCPTime length () const {
131 boost::mutex::scoped_lock lm (_mutex);
135 std::pair<std::shared_ptr<PlayerVideo>, dcpomatic::DCPTime> player_video () const {
136 boost::mutex::scoped_lock lm (_mutex);
137 return _player_video;
140 void add_dropped () {
141 boost::mutex::scoped_lock lm (_mutex);
146 boost::mutex::scoped_lock lm (_mutex);
152 StateTimer _state_timer;
155 /** Mutex protecting all the state in this class */
156 mutable boost::mutex _mutex;
158 std::pair<std::shared_ptr<PlayerVideo>, dcpomatic::DCPTime> _player_video;
159 int _video_frame_rate;
160 /** length of the film we are playing, or 0 if there is none */
161 dcpomatic::DCPTime _length;