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>
36 #include <GL/glxext.h>
40 using boost::shared_ptr;
41 using boost::optional;
43 GLVideoView::GLVideoView (FilmViewer* viewer, wxWindow *parent)
46 _canvas = new wxGLCanvas (parent, wxID_ANY, 0, wxDefaultPosition, wxDefaultSize, wxFULL_REPAINT_ON_RESIZE);
47 _context = new wxGLContext (_canvas);
48 _canvas->Bind (wxEVT_PAINT, boost::bind(&GLVideoView::paint, this));
49 _canvas->Bind (wxEVT_SIZE, boost::bind(boost::ref(Sized)));
51 #if defined(DCPOMATIC_LINUX) && defined(DCPOMATIC_HAVE_GLX_SWAP_INTERVAL_EXT)
52 if (_canvas->IsExtensionSupported("GLX_EXT_swap_control")) {
54 Display* dpy = wxGetX11Display();
55 glXSwapIntervalEXT (dpy, DefaultScreen(dpy), 1);
59 #ifdef DCPOMATIC_WINDOWS
60 if (_canvas->IsExtensionSupported("WGL_EXT_swap_control")) {
62 wglSwapIntervalEXT (1);
69 long swapInterval = 1;
70 CGLSetParameter (CGLGetCurrentContext(), kCGLCPSwapInterval, &swapInterval);
73 glGenTextures (1, &_id);
74 glBindTexture (GL_TEXTURE_2D, _id);
75 glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
78 GLVideoView::~GLVideoView ()
80 glDeleteTextures (1, &_id);
85 check_gl_error (char const * last)
87 GLenum const e = glGetError ();
88 if (e != GL_NO_ERROR) {
89 throw GLError (last, e);
96 _viewer->state_timer().set("paint-panel");
97 _canvas->SetCurrent (*_context);
98 wxPaintDC dc (_canvas);
100 _viewer->state_timer().unset();
104 GLVideoView::update ()
106 if (!_canvas->IsShownOnScreen()) {
109 wxClientDC dc (_canvas);
116 glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
117 check_gl_error ("glClear");
119 glClearColor (0.0f, 0.0f, 0.0f, 1.0f);
120 check_gl_error ("glClearColor");
121 glEnable (GL_TEXTURE_2D);
122 check_gl_error ("glEnable GL_TEXTURE_2D");
124 check_gl_error ("glEnable GL_BLEND");
125 glDisable (GL_DEPTH_TEST);
126 check_gl_error ("glDisable GL_DEPTH_TEST");
127 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
129 if (_canvas->GetSize().x < 64 || _canvas->GetSize().y < 0) {
133 glViewport (0, 0, _canvas->GetSize().x, _canvas->GetSize().y);
134 check_gl_error ("glViewport");
135 glMatrixMode (GL_PROJECTION);
138 gluOrtho2D (0, _canvas->GetSize().x, _canvas->GetSize().y, 0);
139 check_gl_error ("gluOrtho2d");
140 glMatrixMode (GL_MODELVIEW);
143 glTranslatef (0, 0, 0);
149 glVertex2f (0, _size->height);
151 glVertex2f (_size->width, _size->height);
153 glVertex2f (_size->width, 0);
160 dcp::Size const out_size = _viewer->out_size ();
161 wxSize const canvas_size = _canvas->GetSize ();
163 if (!_viewer->pad_black() && out_size.width < canvas_size.GetWidth()) {
165 /* XXX: these colours are right for GNOME; may need adjusting for other OS */
166 glColor3ub (240, 240, 240);
167 glVertex2f (out_size.width, 0);
168 glVertex2f (canvas_size.GetWidth(), 0);
169 glVertex2f (canvas_size.GetWidth(), canvas_size.GetHeight());
170 glVertex2f (out_size.width, canvas_size.GetHeight());
172 glColor3ub (255, 255, 255);
175 if (!_viewer->pad_black() && out_size.height < canvas_size.GetHeight()) {
176 glColor3ub (240, 240, 240);
177 int const gap = (canvas_size.GetHeight() - out_size.height) / 2;
180 glVertex2f (canvas_size.GetWidth(), 0);
181 glVertex2f (canvas_size.GetWidth(), gap);
185 glVertex2f (0, gap + out_size.height + 1);
186 glVertex2f (canvas_size.GetWidth(), gap + out_size.height + 1);
187 glVertex2f (canvas_size.GetWidth(), 2 * gap + out_size.height + 2);
188 glVertex2f (0, 2 * gap + out_size.height + 2);
190 glColor3ub (255, 255, 255);
193 if (_viewer->outline_content()) {
194 glColor3ub (255, 0, 0);
195 glBegin (GL_LINE_LOOP);
196 Position<int> inter_position = _viewer->inter_position ();
197 dcp::Size inter_size = _viewer->inter_size ();
198 glVertex2f (inter_position.x, inter_position.y + (canvas_size.GetHeight() - out_size.height) / 2);
199 glVertex2f (inter_position.x + inter_size.width, inter_position.y + (canvas_size.GetHeight() - out_size.height) / 2);
200 glVertex2f (inter_position.x + inter_size.width, inter_position.y + (canvas_size.GetHeight() - out_size.height) / 2 + inter_size.height);
201 glVertex2f (inter_position.x, inter_position.y + (canvas_size.GetHeight() - out_size.height) / 2 + inter_size.height);
203 glColor3ub (255, 255, 255);
207 _canvas->SwapBuffers();
211 GLVideoView::set_image (shared_ptr<const Image> image)
214 _size = optional<dcp::Size>();
218 DCPOMATIC_ASSERT (image->pixel_format() == AV_PIX_FMT_RGB24);
219 DCPOMATIC_ASSERT (!image->aligned());
221 _size = image->size ();
222 glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
223 check_gl_error ("glPixelStorei");
224 glTexImage2D (GL_TEXTURE_2D, 0, GL_RGB8, _size->width, _size->height, 0, GL_RGB, GL_UNSIGNED_BYTE, image->data()[0]);
225 check_gl_error ("glTexImage2D");
227 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
228 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
229 check_gl_error ("glTexParameteri");
231 glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
232 glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
233 check_gl_error ("glTexParameterf");