2 Copyright (C) 2012-2017 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 /** @file src/film_viewer.h
22 * @brief A wx widget to view `thumbnails' of a Film.
26 #include "lib/config.h"
33 class RGBPlusAlphaImage;
39 * @brief A wx widget to view a preview of a Film.
41 class FilmViewer : public wxPanel
44 FilmViewer (wxWindow *);
47 void set_film (boost::shared_ptr<Film>);
49 /** @return our `playhead' position; this may not lie exactly on a frame boundary */
50 DCPTime position () const {
51 return _video_position;
54 void set_position (DCPTime p);
55 void set_coalesce_player_changes (bool c);
59 int audio_callback (void* out, unsigned int frames);
61 boost::signals2::signal<void (boost::weak_ptr<PlayerVideo>)> ImageChanged;
65 void panel_sized (wxSizeEvent &);
69 void calculate_sizes ();
70 void check_play_state ();
71 void active_jobs_changed (boost::optional<std::string>);
72 void back_clicked (wxMouseEvent &);
73 void forward_clicked (wxMouseEvent &);
74 void player_changed (bool);
75 void update_position_label ();
76 void update_position_slider ();
78 void seek (DCPTime t, bool accurate);
79 void refresh_panel ();
80 void setup_sensitivity ();
81 void film_changed (Film::Property);
82 DCPTime nudge_amount (wxMouseEvent &);
83 void timecode_clicked ();
84 void frame_number_clicked ();
85 void go_to (DCPTime t);
86 void jump_to_selected_clicked ();
87 void recreate_butler ();
88 void config_changed (Config::Property);
89 DCPTime time () const;
92 Frame average_latency () const;
94 boost::shared_ptr<Film> _film;
95 boost::shared_ptr<Player> _player;
99 wxCheckBox* _outline_content;
100 wxRadioButton* _left_eye;
101 wxRadioButton* _right_eye;
102 wxCheckBox* _jump_to_selected;
104 wxButton* _back_button;
105 wxButton* _forward_button;
106 wxStaticText* _frame_number;
107 wxStaticText* _timecode;
108 wxToggleButton* _play_button;
110 bool _coalesce_player_changes;
111 bool _pending_player_change;
113 boost::shared_ptr<const Image> _frame;
114 DCPTime _video_position;
115 Position<int> _inter_position;
116 dcp::Size _inter_size;
118 /** Size of our output (including padding if we have any) */
120 /** Size of the panel that we have available */
121 dcp::Size _panel_size;
122 /** true if the last call to Player::seek() was specified to be accurate;
123 * this is used so that when re-fetching the current frame we
124 * can get the same one that we got last time.
126 bool _last_seek_accurate;
130 unsigned int _audio_block_size;
132 boost::shared_ptr<Butler> _butler;
134 std::list<Frame> _latency_history;
135 /** Mutex to protect _latency_history */
136 mutable boost::mutex _latency_history_mutex;
137 int _latency_history_count;
139 boost::signals2::scoped_connection _config_changed_connection;