2 Copyright (C) 2012-2021 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 /** @file src/film_viewer.h
23 * @brief FilmViewer class.
27 #include "video_view.h"
29 #include "lib/config.h"
30 #include "lib/player_text.h"
31 #include "lib/timer.h"
32 #include "lib/signaller.h"
33 #include "lib/warnings.h"
35 DCPOMATIC_DISABLE_WARNINGS
37 DCPOMATIC_ENABLE_WARNINGS
44 class RGBPlusAlphaImage;
48 class ClosedCaptionsDialog;
52 * @brief A wx widget to view a Film.
54 class FilmViewer : public Signaller
57 FilmViewer (wxWindow *);
60 /** @return the window showing the film's video */
61 wxWindow* panel () const {
62 return _video_view->get();
65 VideoView const * video_view () const {
69 void show_closed_captions ();
71 void set_film (std::shared_ptr<Film>);
72 std::shared_ptr<Film> film () const {
76 void seek (dcpomatic::DCPTime t, bool accurate);
77 void seek (std::shared_ptr<Content> content, dcpomatic::ContentTime p, bool accurate);
78 void seek_by (dcpomatic::DCPTime by, bool accurate);
79 /** @return our `playhead' position; this may not lie exactly on a frame boundary */
80 dcpomatic::DCPTime position () const {
81 return _video_view->position();
83 dcpomatic::DCPTime one_video_frame () const;
90 bool playing () const {
94 void set_coalesce_player_changes (bool c);
95 void set_dcp_decode_reduction (boost::optional<int> reduction);
96 boost::optional<int> dcp_decode_reduction () const;
97 void set_outline_content (bool o);
98 void set_outline_subtitles (boost::optional<dcpomatic::Rect<double>>);
99 void set_eyes (Eyes e);
100 void set_pad_black (bool p);
102 void slow_refresh ();
104 dcpomatic::DCPTime time () const;
105 boost::optional<dcpomatic::DCPTime> audio_time () const;
107 int dropped () const;
108 int errored () const;
111 int audio_callback (void* out, unsigned int frames);
113 StateTimer const & state_timer () const {
114 return _video_view->state_timer ();
117 /* Some accessors and utility methods that VideoView classes need */
118 dcp::Size out_size () const {
121 bool outline_content () const {
122 return _outline_content;
124 boost::optional<dcpomatic::Rect<double>> outline_subtitles () const {
125 return _outline_subtitles;
127 bool pad_black () const {
130 std::shared_ptr<Butler> butler () const {
133 ClosedCaptionsDialog* closed_captions_dialog () const {
134 return _closed_captions_dialog;
137 void image_changed (std::shared_ptr<PlayerVideo> video);
139 bool pending_idle_get () const {
143 boost::signals2::signal<void (std::shared_ptr<PlayerVideo>)> ImageChanged;
144 boost::signals2::signal<void (dcpomatic::DCPTime)> Started;
145 boost::signals2::signal<void (dcpomatic::DCPTime)> Stopped;
146 /** While playing back we reached the end of the film (emitted from GUI thread) */
147 boost::signals2::signal<void ()> Finished;
148 /** Emitted from the GUI thread when a lot of frames are being dropped */
149 boost::signals2::signal<void()> TooManyDropped;
151 boost::signals2::signal<bool ()> PlaybackPermitted;
155 void video_view_sized ();
156 void calculate_sizes ();
157 void player_change (ChangeType type, int, bool);
158 void player_change (std::vector<int> properties);
159 void idle_handler ();
160 void request_idle_display_next_frame ();
161 void film_change (ChangeType, Film::Property);
162 void recreate_butler ();
163 void config_changed (Config::Property);
164 void film_length_change ();
167 dcpomatic::DCPTime uncorrected_time () const;
168 Frame average_latency () const;
170 bool quick_refresh ();
172 std::shared_ptr<Film> _film;
173 std::shared_ptr<Player> _player;
175 VideoView* _video_view = nullptr;
176 bool _coalesce_player_changes = false;
177 std::vector<int> _pending_player_changes;
179 /** Size of our output (including padding if we have any) */
183 int _audio_channels = 0;
184 unsigned int _audio_block_size = 1024;
185 bool _playing = false;
187 std::shared_ptr<Butler> _butler;
189 std::list<Frame> _latency_history;
190 /** Mutex to protect _latency_history */
191 mutable boost::mutex _latency_history_mutex;
192 int _latency_history_count = 0;
194 boost::optional<int> _dcp_decode_reduction;
196 ClosedCaptionsDialog* _closed_captions_dialog = nullptr;
198 bool _outline_content = false;
199 boost::optional<dcpomatic::Rect<double>> _outline_subtitles;
200 /** true to pad the viewer panel with black, false to use
201 the normal window background colour.
203 bool _pad_black = false;
205 /** true if an get() is required next time we are idle */
206 bool _idle_get = false;
208 boost::signals2::scoped_connection _config_changed_connection;