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 "lib/cross.h"
27 #include "lib/player_video.h"
28 #include <boost/bind.hpp>
32 #include <OpenGL/glu.h>
33 #include <OpenGL/glext.h>
34 #include <OpenGL/CGLTypes.h>
35 #include <OpenGL/OpenGL.h>
38 #ifdef DCPOMATIC_LINUX
41 #include <GL/glxext.h>
44 #ifdef DCPOMATIC_WINDOWS
47 #include <GL/wglext.h>
51 using boost::shared_ptr;
52 using boost::optional;
54 GLVideoView::GLVideoView (FilmViewer* viewer, wxWindow *parent)
56 , _vsync_enabled (false)
60 _canvas = new wxGLCanvas (parent, wxID_ANY, 0, wxDefaultPosition, wxDefaultSize, wxFULL_REPAINT_ON_RESIZE);
61 _canvas->Bind (wxEVT_PAINT, boost::bind(&GLVideoView::paint, this));
62 _canvas->Bind (wxEVT_SIZE, boost::bind(boost::ref(Sized)));
64 #if defined(DCPOMATIC_LINUX) && defined(DCPOMATIC_HAVE_GLX_SWAP_INTERVAL_EXT)
65 if (_canvas->IsExtensionSupported("GLX_EXT_swap_control")) {
67 Display* dpy = wxGetX11Display();
68 glXSwapIntervalEXT (dpy, DefaultScreen(dpy), 1);
69 _vsync_enabled = true;
73 #ifdef DCPOMATIC_WINDOWS
74 if (_canvas->IsExtensionSupported("WGL_EXT_swap_control")) {
76 PFNWGLSWAPINTERVALEXTPROC swap = (PFNWGLSWAPINTERVALEXTPROC) wglGetProcAddress("wglSwapIntervalEXT");
79 _vsync_enabled = true;
87 GLint swapInterval = 1;
88 CGLSetParameter (CGLGetCurrentContext(), kCGLCPSwapInterval, &swapInterval);
89 _vsync_enabled = true;
92 glGenTextures (1, &_id);
93 glBindTexture (GL_TEXTURE_2D, _id);
94 glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
97 GLVideoView::~GLVideoView ()
100 _thread->interrupt ();
105 glDeleteTextures (1, &_id);
109 check_gl_error (char const * last)
111 GLenum const e = glGetError ();
112 if (e != GL_NO_ERROR) {
113 throw GLError (last, e);
118 GLVideoView::paint ()
120 /* XXX_b: can't do this yet */
122 _viewer->state_timer().set("paint-panel");
123 _canvas->SetCurrent (*_context);
124 wxPaintDC dc (_canvas);
126 _viewer->state_timer().unset();
131 GLVideoView::update ()
133 if (!_canvas->IsShownOnScreen()) {
137 // wxClientDC dc (_canvas);
144 glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
145 check_gl_error ("glClear");
147 glClearColor (0.0f, 0.0f, 0.0f, 1.0f);
148 check_gl_error ("glClearColor");
149 glEnable (GL_TEXTURE_2D);
150 check_gl_error ("glEnable GL_TEXTURE_2D");
152 check_gl_error ("glEnable GL_BLEND");
153 glDisable (GL_DEPTH_TEST);
154 check_gl_error ("glDisable GL_DEPTH_TEST");
155 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
157 if (_canvas->GetSize().x < 64 || _canvas->GetSize().y < 0) {
161 glViewport (0, 0, _canvas->GetSize().x, _canvas->GetSize().y);
162 check_gl_error ("glViewport");
163 glMatrixMode (GL_PROJECTION);
166 gluOrtho2D (0, _canvas->GetSize().x, _canvas->GetSize().y, 0);
167 check_gl_error ("gluOrtho2d");
168 glMatrixMode (GL_MODELVIEW);
171 glTranslatef (0, 0, 0);
177 glVertex2f (0, _size->height);
179 glVertex2f (_size->width, _size->height);
181 glVertex2f (_size->width, 0);
188 dcp::Size const out_size = _viewer->out_size ();
189 wxSize const canvas_size = _canvas->GetSize ();
191 if (!_viewer->pad_black() && out_size.width < canvas_size.GetWidth()) {
193 /* XXX: these colours are right for GNOME; may need adjusting for other OS */
194 glColor3ub (240, 240, 240);
195 glVertex2f (out_size.width, 0);
196 glVertex2f (canvas_size.GetWidth(), 0);
197 glVertex2f (canvas_size.GetWidth(), canvas_size.GetHeight());
198 glVertex2f (out_size.width, canvas_size.GetHeight());
200 glColor3ub (255, 255, 255);
203 if (!_viewer->pad_black() && out_size.height < canvas_size.GetHeight()) {
204 glColor3ub (240, 240, 240);
205 int const gap = (canvas_size.GetHeight() - out_size.height) / 2;
208 glVertex2f (canvas_size.GetWidth(), 0);
209 glVertex2f (canvas_size.GetWidth(), gap);
213 glVertex2f (0, gap + out_size.height + 1);
214 glVertex2f (canvas_size.GetWidth(), gap + out_size.height + 1);
215 glVertex2f (canvas_size.GetWidth(), 2 * gap + out_size.height + 2);
216 glVertex2f (0, 2 * gap + out_size.height + 2);
218 glColor3ub (255, 255, 255);
221 if (_viewer->outline_content()) {
222 glColor3ub (255, 0, 0);
223 glBegin (GL_LINE_LOOP);
224 Position<int> inter_position = _viewer->inter_position ();
225 dcp::Size inter_size = _viewer->inter_size ();
226 glVertex2f (inter_position.x, inter_position.y + (canvas_size.GetHeight() - out_size.height) / 2);
227 glVertex2f (inter_position.x + inter_size.width, inter_position.y + (canvas_size.GetHeight() - out_size.height) / 2);
228 glVertex2f (inter_position.x + inter_size.width, inter_position.y + (canvas_size.GetHeight() - out_size.height) / 2 + inter_size.height);
229 glVertex2f (inter_position.x, inter_position.y + (canvas_size.GetHeight() - out_size.height) / 2 + inter_size.height);
231 glColor3ub (255, 255, 255);
235 _canvas->SwapBuffers();
239 GLVideoView::set_image (shared_ptr<const Image> image)
242 _size = optional<dcp::Size>();
246 DCPOMATIC_ASSERT (image->pixel_format() == AV_PIX_FMT_RGB24);
247 DCPOMATIC_ASSERT (!image->aligned());
249 _size = image->size ();
250 glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
251 check_gl_error ("glPixelStorei");
252 glTexImage2D (GL_TEXTURE_2D, 0, GL_RGB8, _size->width, _size->height, 0, GL_RGB, GL_UNSIGNED_BYTE, image->data()[0]);
253 check_gl_error ("glTexImage2D");
255 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
256 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
257 check_gl_error ("glTexParameteri");
259 glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
260 glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
261 check_gl_error ("glTexParameterf");
265 GLVideoView::start ()
267 _thread = new boost::thread (boost::bind(&GLVideoView::thread, this));
271 GLVideoView::thread ()
274 /* XXX_b: check all calls and signal emissions in this method & protect them if necessary */
276 boost::mutex::scoped_lock lm (_context_mutex);
277 _context = new wxGLContext (_canvas);
278 _canvas->SetCurrent (*_context);
282 if ((!_viewer->film() || !_viewer->playing()) && !_one_shot) {
283 dcpomatic_sleep_milliseconds (40);
289 dcpomatic::DCPTime const next = _viewer->position() + _viewer->one_video_frame();
291 if (next >= _viewer->film()->length()) {
293 _viewer->Finished ();
297 get_next_frame (false);
298 set_image (_player_video.first->image(bind(&PlayerVideo::force, _1, AV_PIX_FMT_RGB24), false, true));
301 while (_viewer->time_until_next_frame() < 5) {
302 get_next_frame (true);
305 dcpomatic_sleep_milliseconds (_viewer->time_until_next_frame());
309 boost::mutex::scoped_lock lm (_context_mutex);
313 catch (boost::thread_interrupted& e)
315 /* XXX_b: store exceptions here */
321 GLVideoView::context () const
323 boost::mutex::scoped_lock lm (_context_mutex);
328 GLVideoView::display_next_frame (bool non_blocking)
330 bool const g = get_next_frame (non_blocking);