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>
41 class VideoView : public ExceptionStore, public boost::noncopyable
44 VideoView (FilmViewer* viewer);
45 virtual ~VideoView () {}
47 /** @return the thing displaying the image */
48 virtual wxWindow* get () const = 0;
49 /** Re-make and display the image from the current _player_video */
50 virtual void update () = 0;
51 /** Called when playback starts */
52 virtual void start ();
53 /** Called when playback stops */
54 virtual void stop () {}
55 /** Get the next frame and display it; used after seek */
56 virtual bool display_next_frame (bool) = 0;
59 bool refresh_metadata (boost::shared_ptr<const Film> film, dcp::Size video_container_size, dcp::Size film_frame_size);
61 /** Emitted from the GUI thread when our display changes in size */
62 boost::signals2::signal<void()> Sized;
65 /* Accessors for FilmViewer */
67 int dropped () const {
68 boost::mutex::scoped_lock lm (_mutex);
72 int errored () const {
73 boost::mutex::scoped_lock lm (_mutex);
78 boost::mutex::scoped_lock lm (_mutex);
82 StateTimer const & state_timer () const {
86 dcpomatic::DCPTime position () const {
87 boost::mutex::scoped_lock lm (_mutex);
88 return _player_video.second;
92 /* Setters for FilmViewer so it can tell us our state and
93 * we can then use (thread) safely.
96 void set_video_frame_rate (int r) {
97 boost::mutex::scoped_lock lm (_mutex);
98 _video_frame_rate = r;
101 void set_length (dcpomatic::DCPTime len) {
102 boost::mutex::scoped_lock lm (_mutex);
106 void set_eyes (Eyes eyes) {
107 boost::mutex::scoped_lock lm (_mutex);
111 void set_three_d (bool t) {
112 boost::mutex::scoped_lock lm (_mutex);
117 bool get_next_frame (bool non_blocking);
118 boost::optional<int> time_until_next_frame () const;
119 dcpomatic::DCPTime one_video_frame () const;
121 int video_frame_rate () const {
122 boost::mutex::scoped_lock lm (_mutex);
123 return _video_frame_rate;
126 dcpomatic::DCPTime length () const {
127 boost::mutex::scoped_lock lm (_mutex);
131 std::pair<boost::shared_ptr<PlayerVideo>, dcpomatic::DCPTime> player_video () const {
132 boost::mutex::scoped_lock lm (_mutex);
133 return _player_video;
136 void add_dropped () {
137 boost::mutex::scoped_lock lm (_mutex);
142 boost::mutex::scoped_lock lm (_mutex);
148 #ifdef DCPOMATIC_VARIANT_SWAROOP
154 StateTimer _state_timer;
157 /** Mutex protecting all the state in this class */
158 mutable boost::mutex _mutex;
160 std::pair<boost::shared_ptr<PlayerVideo>, dcpomatic::DCPTime> _player_video;
161 int _video_frame_rate;
162 /** length of the film we are playing, or 0 if there is none */
163 dcpomatic::DCPTime _length;