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>
35 #include <GL/glxext.h>
39 using boost::shared_ptr;
40 using boost::optional;
42 GLVideoView::GLVideoView (FilmViewer* viewer, wxWindow *parent)
45 _canvas = new wxGLCanvas (parent, wxID_ANY, 0, wxDefaultPosition, wxDefaultSize, wxFULL_REPAINT_ON_RESIZE);
46 _context = new wxGLContext (_canvas);
47 _canvas->Bind (wxEVT_PAINT, boost::bind(&GLVideoView::paint, this));
48 _canvas->Bind (wxEVT_SIZE, boost::bind(boost::ref(Sized)));
50 #ifdef DCPOMATIC_LINUX
51 if (_canvas->IsExtensionSupported("GLX_EXT_swap_control")) {
53 Display* dpy = wxGetX11Display();
54 glXSwapIntervalEXT (dpy, DefaultScreen(dpy), 1);
58 #ifdef DCPOMATIC_WINDOWS
59 if (_canvas->IsExtensionSupported("WGL_EXT_swap_control")) {
61 wglSwapIntervalEXT (1);
68 NSOpenGLCPSwapInterval = 1;
71 glGenTextures (1, &_id);
72 glBindTexture (GL_TEXTURE_2D, _id);
73 glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
76 GLVideoView::~GLVideoView ()
78 glDeleteTextures (1, &_id);
83 check_gl_error (char const * last)
85 GLenum const e = glGetError ();
86 if (e != GL_NO_ERROR) {
87 throw GLError (last, e);
94 _viewer->state_timer().set("paint-panel");
95 _canvas->SetCurrent (*_context);
96 wxPaintDC dc (_canvas);
98 _viewer->state_timer().unset();
102 GLVideoView::update ()
104 if (!_canvas->IsShownOnScreen()) {
107 wxClientDC dc (_canvas);
114 glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
115 check_gl_error ("glClear");
117 glClearColor (0.0f, 0.0f, 0.0f, 1.0f);
118 check_gl_error ("glClearColor");
119 glEnable (GL_TEXTURE_2D);
120 check_gl_error ("glEnable GL_TEXTURE_2D");
122 check_gl_error ("glEnable GL_BLEND");
123 glDisable (GL_DEPTH_TEST);
124 check_gl_error ("glDisable GL_DEPTH_TEST");
125 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
127 if (_canvas->GetSize().x < 64 || _canvas->GetSize().y < 0) {
131 glViewport (0, 0, _canvas->GetSize().x, _canvas->GetSize().y);
132 check_gl_error ("glViewport");
133 glMatrixMode (GL_PROJECTION);
136 gluOrtho2D (0, _canvas->GetSize().x, _canvas->GetSize().y, 0);
137 check_gl_error ("gluOrtho2d");
138 glMatrixMode (GL_MODELVIEW);
141 glTranslatef (0, 0, 0);
147 glVertex2f (0, _size->height);
149 glVertex2f (_size->width, _size->height);
151 glVertex2f (_size->width, 0);
158 dcp::Size const out_size = _viewer->out_size ();
159 wxSize const canvas_size = _canvas->GetSize ();
161 if (!_viewer->pad_black() && out_size.width < canvas_size.GetWidth()) {
163 /* XXX: these colours are right for GNOME; may need adjusting for other OS */
164 glColor3ub (240, 240, 240);
165 glVertex2f (out_size.width, 0);
166 glVertex2f (canvas_size.GetWidth(), 0);
167 glVertex2f (canvas_size.GetWidth(), canvas_size.GetHeight());
168 glVertex2f (out_size.width, canvas_size.GetHeight());
170 glColor3ub (255, 255, 255);
173 if (!_viewer->pad_black() && out_size.height < canvas_size.GetHeight()) {
174 glColor3ub (240, 240, 240);
175 int const gap = (canvas_size.GetHeight() - out_size.height) / 2;
178 glVertex2f (canvas_size.GetWidth(), 0);
179 glVertex2f (canvas_size.GetWidth(), gap);
183 glVertex2f (0, gap + out_size.height + 1);
184 glVertex2f (canvas_size.GetWidth(), gap + out_size.height + 1);
185 glVertex2f (canvas_size.GetWidth(), 2 * gap + out_size.height + 2);
186 glVertex2f (0, 2 * gap + out_size.height + 2);
188 glColor3ub (255, 255, 255);
191 if (_viewer->outline_content()) {
192 glColor3ub (255, 0, 0);
193 glBegin (GL_LINE_LOOP);
194 Position<int> inter_position = _viewer->inter_position ();
195 dcp::Size inter_size = _viewer->inter_size ();
196 glVertex2f (inter_position.x, inter_position.y + (canvas_size.GetHeight() - out_size.height) / 2);
197 glVertex2f (inter_position.x + inter_size.width, inter_position.y + (canvas_size.GetHeight() - out_size.height) / 2);
198 glVertex2f (inter_position.x + inter_size.width, inter_position.y + (canvas_size.GetHeight() - out_size.height) / 2 + inter_size.height);
199 glVertex2f (inter_position.x, inter_position.y + (canvas_size.GetHeight() - out_size.height) / 2 + inter_size.height);
201 glColor3ub (255, 255, 255);
205 _canvas->SwapBuffers();
209 GLVideoView::set_image (shared_ptr<const Image> image)
212 _size = optional<dcp::Size>();
216 DCPOMATIC_ASSERT (image->pixel_format() == AV_PIX_FMT_RGB24);
217 DCPOMATIC_ASSERT (!image->aligned());
219 _size = image->size ();
220 glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
221 check_gl_error ("glPixelStorei");
222 glTexImage2D (GL_TEXTURE_2D, 0, GL_RGB8, _size->width, _size->height, 0, GL_RGB, GL_UNSIGNED_BYTE, image->data()[0]);
223 check_gl_error ("glTexImage2D");
225 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
226 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
227 check_gl_error ("glTexParameteri");
229 glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
230 glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
231 check_gl_error ("glTexParameterf");