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/shared_ptr.hpp>
29 #include <boost/signals2.hpp>
30 #include <boost/thread.hpp>
31 #include <boost/noncopyable.hpp>
39 class VideoView : public ExceptionStore, public boost::noncopyable
42 VideoView (FilmViewer* viewer);
43 virtual ~VideoView () {}
45 /** @return the thing displaying the image */
46 virtual wxWindow* get () const = 0;
47 /** Re-make and display the image from the current _player_video */
48 virtual void update () = 0;
49 /** Called when playback starts */
50 virtual void start ();
51 /** Called when playback stops */
52 virtual void stop () {}
54 enum NextFrameResult {
60 /** Get the next frame and display it; used after seek */
61 virtual NextFrameResult display_next_frame (bool) = 0;
64 bool reset_metadata (boost::shared_ptr<const Film> film, dcp::Size player_video_container_size);
66 /** Emitted from the GUI thread when our display changes in size */
67 boost::signals2::signal<void()> Sized;
70 /* Accessors for FilmViewer */
72 int dropped () const {
73 boost::mutex::scoped_lock lm (_mutex);
77 int errored () const {
78 boost::mutex::scoped_lock lm (_mutex);
83 boost::mutex::scoped_lock lm (_mutex);
87 StateTimer const & state_timer () const {
91 dcpomatic::DCPTime position () const {
92 boost::mutex::scoped_lock lm (_mutex);
93 return _player_video.second;
97 /* Setters for FilmViewer so it can tell us our state and
98 * we can then use (thread) safely.
101 void set_video_frame_rate (int r) {
102 boost::mutex::scoped_lock lm (_mutex);
103 _video_frame_rate = r;
106 void set_length (dcpomatic::DCPTime len) {
107 boost::mutex::scoped_lock lm (_mutex);
111 void set_eyes (Eyes eyes) {
112 boost::mutex::scoped_lock lm (_mutex);
116 void set_three_d (bool t) {
117 boost::mutex::scoped_lock lm (_mutex);
122 NextFrameResult get_next_frame (bool non_blocking);
123 boost::optional<int> time_until_next_frame () const;
124 dcpomatic::DCPTime one_video_frame () const;
126 int video_frame_rate () const {
127 boost::mutex::scoped_lock lm (_mutex);
128 return _video_frame_rate;
131 dcpomatic::DCPTime length () const {
132 boost::mutex::scoped_lock lm (_mutex);
136 std::pair<boost::shared_ptr<PlayerVideo>, dcpomatic::DCPTime> player_video () const {
137 boost::mutex::scoped_lock lm (_mutex);
138 return _player_video;
141 void add_dropped () {
142 boost::mutex::scoped_lock lm (_mutex);
147 boost::mutex::scoped_lock lm (_mutex);
153 StateTimer _state_timer;
156 /** Mutex protecting all the state in this class */
157 mutable boost::mutex _mutex;
159 std::pair<boost::shared_ptr<PlayerVideo>, dcpomatic::DCPTime> _player_video;
160 int _video_frame_rate;
161 /** length of the film we are playing, or 0 if there is none */
162 dcpomatic::DCPTime _length;