2 Copyright (C) 2020 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 #include "video_view.h"
22 #include "lib/signaller.h"
23 #include "lib/position.h"
24 #include "lib/warnings.h"
25 DCPOMATIC_DISABLE_WARNINGS
26 #include <wx/glcanvas.h>
28 DCPOMATIC_ENABLE_WARNINGS
30 #include <boost/atomic.hpp>
31 #include <boost/thread.hpp>
32 #include <boost/thread/condition.hpp>
41 Texture (GLint unpack_alignment);
44 Texture (Texture const&) = delete;
45 Texture& operator= (Texture const&) = delete;
48 void set (std::shared_ptr<const Image> image);
52 GLint _unpack_alignment;
53 boost::optional<dcp::Size> _size;
57 class GLVideoView : public VideoView
60 GLVideoView (FilmViewer* viewer, wxWindow* parent);
63 wxWindow* get () const override {
66 void update () override;
67 void start () override;
68 void stop () override;
70 NextFrameResult display_next_frame (bool) override;
72 bool vsync_enabled () const {
73 return _vsync_enabled;
76 std::map<GLenum, std::string> information () const {
81 void set_image (std::shared_ptr<const PlayerVideo> pv);
82 void set_image_and_draw ();
83 void draw (Position<int> inter_position, dcp::Size inter_size);
85 void thread_playing ();
86 void request_one_shot ();
87 void check_for_butler_errors ();
88 void ensure_context ();
89 void size_changed (wxSizeEvent const &);
90 void setup_shaders ();
91 void set_border_colour (GLuint program);
94 wxGLContext* _context;
100 void set_next (T const& next) {
104 bool changed () const {
105 return !_value || *_value != _next;
113 boost::optional<T> _value;
117 Last<wxSize> _last_canvas_size;
118 Last<dcp::Size> _last_video_size;
119 Last<Position<int>> _last_inter_position;
120 Last<dcp::Size> _last_inter_size;
121 Last<dcp::Size> _last_out_size;
123 boost::atomic<wxSize> _canvas_size;
124 std::unique_ptr<Texture> _video_texture;
125 std::unique_ptr<Texture> _subtitle_texture;
126 bool _have_subtitle_to_render = false;
128 boost::thread _thread;
130 boost::mutex _playing_mutex;
131 boost::condition _thread_work_condition;
132 boost::atomic<bool> _playing;
133 boost::atomic<bool> _one_shot;
136 GLint _fragment_type;
137 bool _setup_shaders_done = false;
139 std::shared_ptr<wxTimer> _timer;
141 std::map<GLenum, std::string> _information;