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>
37 #include <GL/glxext.h>
41 using boost::shared_ptr;
42 using boost::optional;
44 GLVideoView::GLVideoView (FilmViewer* viewer, wxWindow *parent)
47 _canvas = new wxGLCanvas (parent, wxID_ANY, 0, wxDefaultPosition, wxDefaultSize, wxFULL_REPAINT_ON_RESIZE);
48 _context = new wxGLContext (_canvas);
49 _canvas->Bind (wxEVT_PAINT, boost::bind(&GLVideoView::paint, this));
50 _canvas->Bind (wxEVT_SIZE, boost::bind(boost::ref(Sized)));
52 #if defined(DCPOMATIC_LINUX) && defined(DCPOMATIC_HAVE_GLX_SWAP_INTERVAL_EXT)
53 if (_canvas->IsExtensionSupported("GLX_EXT_swap_control")) {
55 Display* dpy = wxGetX11Display();
56 glXSwapIntervalEXT (dpy, DefaultScreen(dpy), 1);
60 #ifdef DCPOMATIC_WINDOWS
61 if (_canvas->IsExtensionSupported("WGL_EXT_swap_control")) {
63 wglSwapIntervalEXT (1);
70 long swapInterval = 1;
71 CGLSetParameter (CGLGetCurrentContext(), kCGLCPSwapInterval, &swapInterval);
74 glGenTextures (1, &_id);
75 glBindTexture (GL_TEXTURE_2D, _id);
76 glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
79 GLVideoView::~GLVideoView ()
81 glDeleteTextures (1, &_id);
86 check_gl_error (char const * last)
88 GLenum const e = glGetError ();
89 if (e != GL_NO_ERROR) {
90 throw GLError (last, e);
97 _viewer->state_timer().set("paint-panel");
98 _canvas->SetCurrent (*_context);
99 wxPaintDC dc (_canvas);
101 _viewer->state_timer().unset();
105 GLVideoView::update ()
107 if (!_canvas->IsShownOnScreen()) {
110 wxClientDC dc (_canvas);
117 glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
118 check_gl_error ("glClear");
120 glClearColor (0.0f, 0.0f, 0.0f, 1.0f);
121 check_gl_error ("glClearColor");
122 glEnable (GL_TEXTURE_2D);
123 check_gl_error ("glEnable GL_TEXTURE_2D");
125 check_gl_error ("glEnable GL_BLEND");
126 glDisable (GL_DEPTH_TEST);
127 check_gl_error ("glDisable GL_DEPTH_TEST");
128 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
130 if (_canvas->GetSize().x < 64 || _canvas->GetSize().y < 0) {
134 glViewport (0, 0, _canvas->GetSize().x, _canvas->GetSize().y);
135 check_gl_error ("glViewport");
136 glMatrixMode (GL_PROJECTION);
139 gluOrtho2D (0, _canvas->GetSize().x, _canvas->GetSize().y, 0);
140 check_gl_error ("gluOrtho2d");
141 glMatrixMode (GL_MODELVIEW);
144 glTranslatef (0, 0, 0);
150 glVertex2f (0, _size->height);
152 glVertex2f (_size->width, _size->height);
154 glVertex2f (_size->width, 0);
161 dcp::Size const out_size = _viewer->out_size ();
162 wxSize const canvas_size = _canvas->GetSize ();
164 if (!_viewer->pad_black() && out_size.width < canvas_size.GetWidth()) {
166 /* XXX: these colours are right for GNOME; may need adjusting for other OS */
167 glColor3ub (240, 240, 240);
168 glVertex2f (out_size.width, 0);
169 glVertex2f (canvas_size.GetWidth(), 0);
170 glVertex2f (canvas_size.GetWidth(), canvas_size.GetHeight());
171 glVertex2f (out_size.width, canvas_size.GetHeight());
173 glColor3ub (255, 255, 255);
176 if (!_viewer->pad_black() && out_size.height < canvas_size.GetHeight()) {
177 glColor3ub (240, 240, 240);
178 int const gap = (canvas_size.GetHeight() - out_size.height) / 2;
181 glVertex2f (canvas_size.GetWidth(), 0);
182 glVertex2f (canvas_size.GetWidth(), gap);
186 glVertex2f (0, gap + out_size.height + 1);
187 glVertex2f (canvas_size.GetWidth(), gap + out_size.height + 1);
188 glVertex2f (canvas_size.GetWidth(), 2 * gap + out_size.height + 2);
189 glVertex2f (0, 2 * gap + out_size.height + 2);
191 glColor3ub (255, 255, 255);
194 if (_viewer->outline_content()) {
195 glColor3ub (255, 0, 0);
196 glBegin (GL_LINE_LOOP);
197 Position<int> inter_position = _viewer->inter_position ();
198 dcp::Size inter_size = _viewer->inter_size ();
199 glVertex2f (inter_position.x, 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);
201 glVertex2f (inter_position.x + inter_size.width, inter_position.y + (canvas_size.GetHeight() - out_size.height) / 2 + inter_size.height);
202 glVertex2f (inter_position.x, inter_position.y + (canvas_size.GetHeight() - out_size.height) / 2 + inter_size.height);
204 glColor3ub (255, 255, 255);
208 _canvas->SwapBuffers();
212 GLVideoView::set_image (shared_ptr<const Image> image)
215 _size = optional<dcp::Size>();
219 DCPOMATIC_ASSERT (image->pixel_format() == AV_PIX_FMT_RGB24);
220 DCPOMATIC_ASSERT (!image->aligned());
222 _size = image->size ();
223 glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
224 check_gl_error ("glPixelStorei");
225 glTexImage2D (GL_TEXTURE_2D, 0, GL_RGB8, _size->width, _size->height, 0, GL_RGB, GL_UNSIGNED_BYTE, image->data()[0]);
226 check_gl_error ("glTexImage2D");
228 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
229 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
230 check_gl_error ("glTexParameteri");
232 glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
233 glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
234 check_gl_error ("glTexParameterf");