2 Copyright (C) 2018-2019 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 "gl_video_view.h"
22 #include "film_viewer.h"
23 #include "lib/image.h"
24 #include "lib/dcpomatic_assert.h"
25 #include "lib/exceptions.h"
26 #include <boost/bind.hpp>
30 #include <OpenGL/glu.h>
31 #include <OpenGL/glext.h>
32 #include <OpenGL/CGLTypes.h>
33 #include <OpenGL/OpenGL.h>
36 #ifdef DCPOMATIC_LINUX
39 #include <GL/glxext.h>
42 #ifdef DCPOMATIC_WINDOWS
45 #include <GL/wglext.h>
49 using boost::shared_ptr;
50 using boost::optional;
52 GLVideoView::GLVideoView (FilmViewer* viewer, wxWindow *parent)
54 , _vsync_enabled (false)
56 _canvas = new wxGLCanvas (parent, wxID_ANY, 0, wxDefaultPosition, wxDefaultSize, wxFULL_REPAINT_ON_RESIZE);
57 _context = new wxGLContext (_canvas);
58 _canvas->Bind (wxEVT_PAINT, boost::bind(&GLVideoView::paint, this));
59 _canvas->Bind (wxEVT_SIZE, boost::bind(boost::ref(Sized)));
61 #if defined(DCPOMATIC_LINUX) && defined(DCPOMATIC_HAVE_GLX_SWAP_INTERVAL_EXT)
62 if (_canvas->IsExtensionSupported("GLX_EXT_swap_control")) {
64 Display* dpy = wxGetX11Display();
65 glXSwapIntervalEXT (dpy, DefaultScreen(dpy), 1);
66 _vsync_enabled = true;
70 #ifdef DCPOMATIC_WINDOWS
71 if (_canvas->IsExtensionSupported("WGL_EXT_swap_control")) {
73 wglSwapIntervalEXT (1);
74 _vsync_enabled = true;
81 GLint swapInterval = 1;
82 CGLSetParameter (CGLGetCurrentContext(), kCGLCPSwapInterval, &swapInterval);
83 _vsync_enabled = true;
86 glGenTextures (1, &_id);
87 glBindTexture (GL_TEXTURE_2D, _id);
88 glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
91 GLVideoView::~GLVideoView ()
93 glDeleteTextures (1, &_id);
98 check_gl_error (char const * last)
100 GLenum const e = glGetError ();
101 if (e != GL_NO_ERROR) {
102 throw GLError (last, e);
107 GLVideoView::paint ()
109 _viewer->state_timer().set("paint-panel");
110 _canvas->SetCurrent (*_context);
111 wxPaintDC dc (_canvas);
113 _viewer->state_timer().unset();
117 GLVideoView::update ()
119 if (!_canvas->IsShownOnScreen()) {
122 wxClientDC dc (_canvas);
129 glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
130 check_gl_error ("glClear");
132 glClearColor (0.0f, 0.0f, 0.0f, 1.0f);
133 check_gl_error ("glClearColor");
134 glEnable (GL_TEXTURE_2D);
135 check_gl_error ("glEnable GL_TEXTURE_2D");
137 check_gl_error ("glEnable GL_BLEND");
138 glDisable (GL_DEPTH_TEST);
139 check_gl_error ("glDisable GL_DEPTH_TEST");
140 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
142 if (_canvas->GetSize().x < 64 || _canvas->GetSize().y < 0) {
146 glViewport (0, 0, _canvas->GetSize().x, _canvas->GetSize().y);
147 check_gl_error ("glViewport");
148 glMatrixMode (GL_PROJECTION);
151 gluOrtho2D (0, _canvas->GetSize().x, _canvas->GetSize().y, 0);
152 check_gl_error ("gluOrtho2d");
153 glMatrixMode (GL_MODELVIEW);
156 glTranslatef (0, 0, 0);
162 glVertex2f (0, _size->height);
164 glVertex2f (_size->width, _size->height);
166 glVertex2f (_size->width, 0);
173 dcp::Size const out_size = _viewer->out_size ();
174 wxSize const canvas_size = _canvas->GetSize ();
176 if (!_viewer->pad_black() && out_size.width < canvas_size.GetWidth()) {
178 /* XXX: these colours are right for GNOME; may need adjusting for other OS */
179 glColor3ub (240, 240, 240);
180 glVertex2f (out_size.width, 0);
181 glVertex2f (canvas_size.GetWidth(), 0);
182 glVertex2f (canvas_size.GetWidth(), canvas_size.GetHeight());
183 glVertex2f (out_size.width, canvas_size.GetHeight());
185 glColor3ub (255, 255, 255);
188 if (!_viewer->pad_black() && out_size.height < canvas_size.GetHeight()) {
189 glColor3ub (240, 240, 240);
190 int const gap = (canvas_size.GetHeight() - out_size.height) / 2;
193 glVertex2f (canvas_size.GetWidth(), 0);
194 glVertex2f (canvas_size.GetWidth(), gap);
198 glVertex2f (0, gap + out_size.height + 1);
199 glVertex2f (canvas_size.GetWidth(), gap + out_size.height + 1);
200 glVertex2f (canvas_size.GetWidth(), 2 * gap + out_size.height + 2);
201 glVertex2f (0, 2 * gap + out_size.height + 2);
203 glColor3ub (255, 255, 255);
206 if (_viewer->outline_content()) {
207 glColor3ub (255, 0, 0);
208 glBegin (GL_LINE_LOOP);
209 Position<int> inter_position = _viewer->inter_position ();
210 dcp::Size inter_size = _viewer->inter_size ();
211 glVertex2f (inter_position.x, inter_position.y + (canvas_size.GetHeight() - out_size.height) / 2);
212 glVertex2f (inter_position.x + inter_size.width, inter_position.y + (canvas_size.GetHeight() - out_size.height) / 2);
213 glVertex2f (inter_position.x + inter_size.width, inter_position.y + (canvas_size.GetHeight() - out_size.height) / 2 + inter_size.height);
214 glVertex2f (inter_position.x, inter_position.y + (canvas_size.GetHeight() - out_size.height) / 2 + inter_size.height);
216 glColor3ub (255, 255, 255);
220 _canvas->SwapBuffers();
224 GLVideoView::set_image (shared_ptr<const Image> image)
227 _size = optional<dcp::Size>();
231 DCPOMATIC_ASSERT (image->pixel_format() == AV_PIX_FMT_RGB24);
232 DCPOMATIC_ASSERT (!image->aligned());
234 _size = image->size ();
235 glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
236 check_gl_error ("glPixelStorei");
237 glTexImage2D (GL_TEXTURE_2D, 0, GL_RGB8, _size->width, _size->height, 0, GL_RGB, GL_UNSIGNED_BYTE, image->data()[0]);
238 check_gl_error ("glTexImage2D");
240 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
241 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
242 check_gl_error ("glTexParameteri");
244 glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
245 glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
246 check_gl_error ("glTexParameterf");