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/>.
22 #include "lib/warnings.h"
24 DCPOMATIC_DISABLE_WARNINGS
25 #include <wx/glcanvas.h>
27 DCPOMATIC_ENABLE_WARNINGS
29 /* The OpenGL API in wxWidgets 3.0.x is sufficiently different to make it awkward to support,
30 * and I think it may even have things missing that we require (e.g. the attributes parameter
31 * to wxGLContext). Hence we only support the GLVideoView on wxWidgets 3.1.0 and higher
32 * (which only excludes the old macOS builds, since wxWidgets 3.1.x does not support macOS
35 #if wxCHECK_VERSION(3,1,0)
37 #include "video_view.h"
38 #include "lib/signaller.h"
39 #include "lib/position.h"
41 #include <boost/atomic.hpp>
42 #include <boost/thread.hpp>
43 #include <boost/thread/condition.hpp>
52 Texture (GLint unpack_alignment);
55 Texture (Texture const&) = delete;
56 Texture& operator= (Texture const&) = delete;
59 void set (std::shared_ptr<const Image> image);
63 GLint _unpack_alignment;
64 boost::optional<dcp::Size> _size;
68 class GLVideoView : public VideoView
71 GLVideoView (FilmViewer* viewer, wxWindow* parent);
74 wxWindow* get () const override {
77 void update () override;
78 void start () override;
79 void stop () override;
81 NextFrameResult display_next_frame (bool) override;
83 bool vsync_enabled () const {
84 return _vsync_enabled;
87 std::map<GLenum, std::string> information () const {
92 void set_image (std::shared_ptr<const PlayerVideo> pv);
93 void set_image_and_draw ();
96 void thread_playing ();
97 void request_one_shot ();
98 void check_for_butler_errors ();
99 void ensure_context ();
100 void size_changed (wxSizeEvent const &);
101 void setup_shaders ();
102 void set_border_colour (GLuint program);
105 wxGLContext* _context;
111 void set_next (T const& next) {
115 bool changed () const {
116 return !_value || *_value != _next;
124 boost::optional<T> _value;
128 Last<wxSize> _last_canvas_size;
129 Last<dcp::Size> _last_video_size;
130 Last<Position<int>> _last_inter_position;
131 Last<dcp::Size> _last_inter_size;
132 Last<dcp::Size> _last_out_size;
134 boost::atomic<wxSize> _canvas_size;
135 std::unique_ptr<Texture> _video_texture;
136 std::unique_ptr<Texture> _subtitle_texture;
137 bool _have_subtitle_to_render = false;
139 boost::thread _thread;
141 boost::mutex _playing_mutex;
142 boost::condition _thread_work_condition;
143 boost::atomic<bool> _playing;
144 boost::atomic<bool> _one_shot;
147 GLint _fragment_type;
148 bool _setup_shaders_done = false;
150 std::shared_ptr<wxTimer> _timer;
152 std::map<GLenum, std::string> _information;