2 Copyright (C) 2019-2021 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/>.
22 #ifndef DCPOMATIC_VIDEO_VIEW_H
23 #define DCPOMATIC_VIDEO_VIEW_H
26 #include "optimisation.h"
27 #include "lib/dcpomatic_time.h"
28 #include "lib/exception_store.h"
29 #include "lib/signaller.h"
30 #include "lib/timer.h"
31 #include "lib/types.h"
32 #include <dcp/warnings.h>
33 #include <dcp/types.h>
34 LIBDCP_DISABLE_WARNINGS
36 LIBDCP_ENABLE_WARNINGS
37 #include <boost/signals2.hpp>
38 #include <boost/thread.hpp>
48 class VideoView : public ExceptionStore, public Signaller
51 VideoView (FilmViewer* viewer);
52 virtual ~VideoView () {}
54 VideoView (VideoView const&) = delete;
55 VideoView& operator= (VideoView const&) = delete;
57 /** @return the thing displaying the image */
58 virtual wxWindow* get () const = 0;
59 /** Re-make and display the image from the current _player_video */
60 virtual void update () = 0;
61 /** Called when playback starts */
62 virtual void start ();
63 /** Called when playback stops */
64 virtual void stop () {}
66 enum NextFrameResult {
72 /** Get the next frame and display it; used after seek */
73 virtual NextFrameResult display_next_frame (bool) = 0;
76 bool reset_metadata (std::shared_ptr<const Film> film, dcp::Size player_video_container_size);
78 /** Emitted from the GUI thread when our display changes in size */
79 boost::signals2::signal<void()> Sized;
80 /** Emitted from the GUI thread when a lot of frames are being dropped */
81 boost::signals2::signal<void()> TooManyDropped;
84 /* Accessors for FilmViewer */
86 int dropped () const {
87 boost::mutex::scoped_lock lm (_mutex);
91 int errored () const {
92 boost::mutex::scoped_lock lm (_mutex);
97 boost::mutex::scoped_lock lm (_mutex);
101 StateTimer const & state_timer () const {
105 dcpomatic::DCPTime position () const {
106 boost::mutex::scoped_lock lm (_mutex);
107 return _player_video.second;
111 /* Setters for FilmViewer so it can tell us our state and
112 * we can then use (thread) safely.
115 void set_video_frame_rate (int r) {
116 boost::mutex::scoped_lock lm (_mutex);
117 _video_frame_rate = r;
120 void set_length (dcpomatic::DCPTime len) {
121 boost::mutex::scoped_lock lm (_mutex);
125 void set_eyes (Eyes eyes) {
126 boost::mutex::scoped_lock lm (_mutex);
130 void set_three_d (bool t) {
131 boost::mutex::scoped_lock lm (_mutex);
135 void set_optimisation(Optimisation o) {
140 NextFrameResult get_next_frame (bool non_blocking);
141 boost::optional<int> time_until_next_frame () const;
142 dcpomatic::DCPTime one_video_frame () const;
144 wxColour pad_colour () const;
146 wxColour outline_content_colour () const {
147 return wxColour(255, 0, 0);
150 wxColour outline_subtitles_colour () const {
151 return wxColour(0, 255, 0);
154 wxColour crop_guess_colour () const {
155 return wxColour(0, 0, 255);
158 int video_frame_rate () const {
159 boost::mutex::scoped_lock lm (_mutex);
160 return _video_frame_rate;
163 dcpomatic::DCPTime length () const {
164 boost::mutex::scoped_lock lm (_mutex);
168 std::pair<std::shared_ptr<PlayerVideo>, dcpomatic::DCPTime> player_video () const {
169 boost::mutex::scoped_lock lm (_mutex);
170 return _player_video;
176 boost::mutex::scoped_lock lm (_mutex);
182 StateTimer _state_timer;
184 Optimisation _optimisation = Optimisation::NONE;
187 /** Mutex protecting all the state in this class */
188 mutable boost::mutex _mutex;
190 std::pair<std::shared_ptr<PlayerVideo>, dcpomatic::DCPTime> _player_video;
191 int _video_frame_rate = 0;
192 /** length of the film we are playing, or 0 if there is none */
193 dcpomatic::DCPTime _length;
194 Eyes _eyes = Eyes::LEFT;
195 bool _three_d = false;
198 struct timeval _dropped_check_period_start;