3 * @brief EGL OpenGL extension module
5 /*****************************************************************************
6 * Copyright © 2010-2011 Rémi Denis-Courmont
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public License
10 * as published by the Free Software Foundation; either version 2.1
11 * of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 ****************************************************************************/
31 #include <vlc_common.h>
32 #include <vlc_plugin.h>
33 #include <vlc_opengl.h>
34 #include <vlc_vout_window.h>
36 # include <vlc_xlib.h>
39 /* Plugin callbacks */
40 static int OpenGLES2 (vlc_object_t *);
41 static int OpenGLES (vlc_object_t *);
42 static int OpenGL (vlc_object_t *);
43 static void Close (vlc_object_t *);
46 set_shortname (N_("EGL"))
47 set_description (N_("EGL extension for OpenGL"))
48 set_category (CAT_VIDEO)
49 set_subcategory (SUBCAT_VIDEO_VOUT)
50 set_capability ("opengl", 50)
51 set_callbacks (OpenGL, Close)
54 set_capability ("opengl es2", 50)
55 set_callbacks (OpenGLES2, Close)
58 set_capability ("opengl es", 50)
59 set_callbacks (OpenGLES, Close)
63 typedef struct vlc_gl_sys_t
70 /* OpenGL callbacks */
71 static int MakeCurrent (vlc_gl_t *);
72 static void SwapBuffers (vlc_gl_t *);
74 static bool CheckAPI (EGLDisplay dpy, const char *api)
76 const char *apis = eglQueryString (dpy, EGL_CLIENT_APIS);
77 size_t apilen = strlen (api);
79 /* Cannot use strtok_r() on constant string... */
82 if (!strncmp (apis, api, apilen)
83 && (memchr (" ", apis[apilen], 2) != NULL))
86 apis = strchr (apis, ' ');
103 * Probe EGL display availability
105 static int Open (vlc_object_t *obj, const struct gl_api *api)
107 vlc_gl_t *gl = (vlc_gl_t *)obj;
110 /* EGL can only use the default X11 display */
111 if (gl->surface->display.x11 != NULL)
113 if (!vlc_xlib_init (obj))
117 /* Initialize EGL display */
118 /* TODO: support various display types */
119 EGLDisplay dpy = eglGetDisplay (EGL_DEFAULT_DISPLAY);
120 if (dpy == EGL_NO_DISPLAY)
123 vlc_gl_sys_t *sys = malloc (sizeof (*sys));
124 if (unlikely(sys == NULL))
130 if (eglInitialize (dpy, &major, &minor) != EGL_TRUE)
132 /* No need to call eglTerminate() in this case */
137 if (major != 1 || minor < api->min_minor || !CheckAPI (dpy, api->name))
140 msg_Dbg (obj, "EGL version %s by %s", eglQueryString (dpy, EGL_VERSION),
141 eglQueryString (dpy, EGL_VENDOR));
143 const char *ext = eglQueryString (dpy, EGL_EXTENSIONS);
145 msg_Dbg (obj, " extensions: %s", ext);
148 const EGLint conf_attr[] = {
152 EGL_RENDERABLE_TYPE, api->render_bit,
158 if (eglChooseConfig (dpy, conf_attr, cfgv, 1, &cfgc) != EGL_TRUE
162 /* Create a drawing surface */
164 EGLNativeWindowType win = gl->surface->handle.hwnd;
165 #elif defined (__unix__)
166 EGLNativeWindowType win = gl->surface->handle.xid;
169 EGLSurface surface = eglCreateWindowSurface (dpy, cfgv[0], win, NULL);
170 if (surface == EGL_NO_SURFACE)
172 msg_Err (obj, "cannot create EGL window surface");
175 sys->surface = surface;
177 if (eglBindAPI (api->api) != EGL_TRUE)
179 msg_Err (obj, "cannot bind EGL API");
183 EGLContext ctx = eglCreateContext (dpy, cfgv[0], EGL_NO_CONTEXT,
185 if (ctx == EGL_NO_CONTEXT)
187 msg_Err (obj, "cannot create EGL context");
192 /* Initialize OpenGL callbacks */
194 gl->makeCurrent = MakeCurrent;
195 gl->swap = SwapBuffers;
205 static int OpenGLES2 (vlc_object_t *obj)
207 static const struct gl_api api = {
208 "OpenGL_ES", EGL_OPENGL_ES_API, 3, EGL_OPENGL_ES2_BIT,
209 { EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE },
211 return Open (obj, &api);
214 static int OpenGLES (vlc_object_t *obj)
216 static const struct gl_api api = {
217 "OpenGL_ES", EGL_OPENGL_ES_API, 0, EGL_OPENGL_ES_BIT,
218 { EGL_CONTEXT_CLIENT_VERSION, 1, EGL_NONE },
220 return Open (obj, &api);
223 static int OpenGL (vlc_object_t *obj)
225 static const struct gl_api api = {
226 "OpenGL", EGL_OPENGL_API, 4, EGL_OPENGL_BIT,
229 return Open (obj, &api);
232 static void Close (vlc_object_t *obj)
234 vlc_gl_t *gl = (vlc_gl_t *)obj;
235 vlc_gl_sys_t *sys = gl->sys;
237 eglTerminate (sys->display);
241 static int MakeCurrent (vlc_gl_t *gl)
243 vlc_gl_sys_t *sys = gl->sys;
245 if (eglMakeCurrent (sys->display, sys->surface, sys->surface,
246 sys->context) != EGL_TRUE)
251 static void SwapBuffers (vlc_gl_t *gl)
253 vlc_gl_sys_t *sys = gl->sys;
255 eglSwapBuffers (sys->display, sys->surface);