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 *, bool outline_content = true, bool jump_to_selected = true);
47 void set_film (boost::shared_ptr<Film>);
48 boost::shared_ptr<Film> film () const {
52 /** @return our `playhead' position; this may not lie exactly on a frame boundary */
53 DCPTime position () const {
54 return _video_position;
57 void set_position (DCPTime p);
58 void set_coalesce_player_changes (bool c);
59 void set_dcp_decode_reduction (boost::optional<int> reduction);
60 boost::optional<int> dcp_decode_reduction () const;
64 int dropped () const {
68 int audio_callback (void* out, unsigned int frames);
70 boost::signals2::signal<void (boost::weak_ptr<PlayerVideo>)> ImageChanged;
74 void panel_sized (wxSizeEvent &);
75 void slider_moved (bool update_slider);
78 void calculate_sizes ();
79 void check_play_state ();
80 void active_jobs_changed (boost::optional<std::string>);
81 void rewind_clicked (wxMouseEvent &);
82 void back_clicked (wxMouseEvent &);
83 void forward_clicked (wxMouseEvent &);
84 void player_changed (bool);
85 void update_position_label ();
86 void update_position_slider ();
88 void seek (DCPTime t, bool accurate);
89 void refresh_panel ();
90 void setup_sensitivity ();
91 void film_changed (Film::Property);
92 DCPTime nudge_amount (wxMouseEvent &);
93 void timecode_clicked ();
94 void frame_number_clicked ();
95 void go_to (DCPTime t);
96 void jump_to_selected_clicked ();
97 void recreate_butler ();
98 void config_changed (Config::Property);
99 DCPTime time () const;
102 Frame average_latency () const;
103 DCPTime one_video_frame () const;
105 boost::shared_ptr<Film> _film;
106 boost::shared_ptr<Player> _player;
109 /** The area that we put our image in */
111 wxCheckBox* _outline_content;
112 wxRadioButton* _left_eye;
113 wxRadioButton* _right_eye;
114 wxCheckBox* _jump_to_selected;
116 wxButton* _rewind_button;
117 wxButton* _back_button;
118 wxButton* _forward_button;
119 wxStaticText* _frame_number;
120 wxStaticText* _timecode;
121 wxToggleButton* _play_button;
123 bool _coalesce_player_changes;
124 bool _pending_player_change;
126 boost::shared_ptr<const Image> _frame;
127 DCPTime _video_position;
128 Position<int> _inter_position;
129 dcp::Size _inter_size;
131 /** Size of our output (including padding if we have any) */
133 /** Size of the panel that we have available */
134 dcp::Size _panel_size;
135 /** true if the last call to Player::seek() was specified to be accurate;
136 * this is used so that when re-fetching the current frame we
137 * can get the same one that we got last time.
139 bool _last_seek_accurate;
143 unsigned int _audio_block_size;
145 boost::shared_ptr<Butler> _butler;
147 std::list<Frame> _latency_history;
148 /** Mutex to protect _latency_history */
149 mutable boost::mutex _latency_history_mutex;
150 int _latency_history_count;
153 boost::optional<int> _dcp_decode_reduction;
155 boost::signals2::scoped_connection _config_changed_connection;