1 /*****************************************************************************
2 * glx.c: GLX OpenGL provider
3 *****************************************************************************
4 * Copyright (C) 2004 the VideoLAN team
7 * Authors: Cyril Deguet <asmax@videolan.org>
8 * Gildas Bazin <gbazin@videolan.org>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
28 #include <errno.h> /* ENOMEM */
35 #include <vlc_plugin.h>
36 #include <vlc_interface.h>
40 # include <sys/shm.h> /* shmget(), shmctl() */
45 #include <X11/Xutil.h>
46 #include <X11/keysym.h>
48 # include <X11/extensions/XShm.h>
50 #ifdef DPMSINFO_IN_DPMS_H
51 # include <X11/extensions/dpms.h>
59 //#define VLCGL_RGB_FORMAT GL_RGB
60 //#define VLCGL_RGB_TYPE GL_UNSIGNED_SHORT_5_6_5
63 //#define VLCGL_RGB_FORMAT GL_RGB
64 //#define VLCGL_RGB_TYPE GL_UNSIGNED_BYTE
67 #define VLCGL_RGB_FORMAT GL_RGBA
68 #define VLCGL_RGB_TYPE GL_UNSIGNED_BYTE
71 /*****************************************************************************
72 * OpenGL provider interface
73 *****************************************************************************/
74 static int CreateOpenGL ( vlc_object_t * );
75 static void DestroyOpenGL( vlc_object_t * );
76 static int InitOpenGL ( vout_thread_t * );
77 static void SwapBuffers ( vout_thread_t * );
79 /*****************************************************************************
81 *****************************************************************************/
82 static int InitGLX12 ( vout_thread_t * );
83 static int InitGLX13 ( vout_thread_t * );
84 static void SwitchContext( vout_thread_t * );
86 /*****************************************************************************
88 *****************************************************************************/
89 #define ADAPTOR_TEXT N_("XVideo adaptor number")
90 #define ADAPTOR_LONGTEXT N_( \
91 "If your graphics card provides several adaptors, you have " \
92 "to choose which one will be used (you shouldn't have to change this).")
94 #define ALT_FS_TEXT N_("Alternate fullscreen method")
95 #define ALT_FS_LONGTEXT N_( \
96 "There are two ways to make a fullscreen window, unfortunately each one " \
97 "has its drawbacks.\n" \
98 "1) Let the window manager handle your fullscreen window (default), but " \
99 "things like taskbars will likely show on top of the video.\n" \
100 "2) Completely bypass the window manager, but then nothing will be able " \
101 "to show on top of the video.")
103 #define DISPLAY_TEXT N_("X11 display")
104 #define DISPLAY_LONGTEXT N_( \
105 "X11 hardware display to use. By default VLC will " \
106 "use the value of the DISPLAY environment variable.")
108 #define SCREEN_TEXT N_("Screen for fullscreen mode.")
109 #define SCREEN_LONGTEXT N_( \
110 "Screen to use in fullscreen mode. For instance " \
111 "set it to 0 for first screen, 1 for the second.")
114 set_shortname( "OpenGL(GLX)" );
115 set_category( CAT_VIDEO );
116 set_subcategory( SUBCAT_VIDEO_VOUT );
117 set_description( _("OpenGL(GLX) provider") );
118 set_capability( "opengl provider", 50 );
119 set_callbacks( CreateOpenGL, DestroyOpenGL );
121 add_string( "glx-display", NULL, NULL, DISPLAY_TEXT, DISPLAY_LONGTEXT, true );
122 add_integer( "glx-adaptor", -1, NULL, ADAPTOR_TEXT, ADAPTOR_LONGTEXT, true );
123 add_bool( "glx-altfullscreen", 0, NULL, ALT_FS_TEXT, ALT_FS_LONGTEXT, true );
125 add_integer ( "glx-xineramascreen", 0, NULL, SCREEN_TEXT, SCREEN_LONGTEXT, true );
129 /*****************************************************************************
130 * Exported prototypes
131 *****************************************************************************/
132 extern int Activate ( vlc_object_t * );
133 extern void Deactivate ( vlc_object_t * );
135 /*****************************************************************************
136 * CreateOpenGL: initialize an OpenGL provider
137 *****************************************************************************/
138 static int CreateOpenGL( vlc_object_t *p_this )
140 vout_thread_t *p_vout = (vout_thread_t *)p_this;
142 if( Activate( p_this ) != VLC_SUCCESS )
147 /* Set the function pointer */
148 p_vout->pf_init = InitOpenGL;
149 p_vout->pf_swap = SwapBuffers;
154 /*****************************************************************************
155 * DestroyOpenGL: destroys an OpenGL provider
156 *****************************************************************************/
157 static void DestroyOpenGL( vlc_object_t *p_this )
159 vout_thread_t *p_vout = (vout_thread_t *)p_this;
160 vout_sys_t *p_sys = p_vout->p_sys;
162 glXDestroyContext( p_sys->p_display, p_sys->gwctx );
165 glXDestroyWindow( p_sys->p_display, p_sys->gwnd );
168 Deactivate( p_this );
171 /*****************************************************************************
172 * InitOpenGL: initializes OpenGL provider
173 *****************************************************************************/
174 static int InitOpenGL( vout_thread_t *p_vout )
177 if( !p_vout->p_sys->b_glx13 )
179 if( InitGLX12( p_vout ) != VLC_SUCCESS )
186 if( InitGLX13( p_vout ) != VLC_SUCCESS )
192 /* Set the OpenGL context _for the current thread_ */
193 SwitchContext( p_vout );
198 int InitGLX12( vout_thread_t *p_vout )
200 vout_sys_t *p_sys = p_vout->p_sys;
202 int p_attr[] = { GLX_RGBA, GLX_RED_SIZE, 5, GLX_GREEN_SIZE, 5,
203 GLX_BLUE_SIZE, 5, GLX_DOUBLEBUFFER, 0 };
205 p_vi = glXChooseVisual( p_sys->p_display,
206 DefaultScreen( p_sys->p_display), p_attr );
209 msg_Err( p_vout, "Cannot get GLX 1.2 visual" );
213 /* Create an OpenGL context */
214 p_sys->gwctx = glXCreateContext( p_sys->p_display, p_vi, 0, True );
218 msg_Err( p_vout, "Cannot create OpenGL context");
225 int InitGLX13( vout_thread_t *p_vout )
227 vout_sys_t *p_sys = p_vout->p_sys;
229 GLXFBConfig *p_fbconfs, fbconf;
231 int p_attr[] = { GLX_RED_SIZE, 5, GLX_GREEN_SIZE, 5,
232 GLX_BLUE_SIZE, 5, GLX_DOUBLEBUFFER, True,
233 GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT, 0 };
235 /* Get the FB configuration */
236 p_fbconfs = glXChooseFBConfig( p_sys->p_display, 0, p_attr, &i_nbelem );
237 if( (i_nbelem <= 0) || !p_fbconfs )
239 msg_Err( p_vout, "Cannot get FB configurations");
240 if( p_fbconfs ) XFree( p_fbconfs );
243 fbconf = p_fbconfs[0];
245 /* Get the X11 visual */
246 p_vi = glXGetVisualFromFBConfig( p_sys->p_display, fbconf );
249 msg_Err( p_vout, "Cannot get X11 visual" );
255 /* Create the GLX window */
256 p_sys->gwnd = glXCreateWindow( p_sys->p_display, fbconf,
257 p_sys->p_win->video_window, NULL );
258 if( p_sys->gwnd == None )
260 msg_Err( p_vout, "Cannot create GLX window" );
264 /* Create an OpenGL context */
265 p_sys->gwctx = glXCreateNewContext( p_sys->p_display, fbconf,
266 GLX_RGBA_TYPE, NULL, True );
270 msg_Err( p_vout, "Cannot create OpenGL context");
277 /*****************************************************************************
278 * SwapBuffers: swap front/back buffers
279 *****************************************************************************/
280 static void SwapBuffers( vout_thread_t *p_vout )
282 vout_sys_t *p_sys = p_vout->p_sys;
283 unsigned int i_width, i_height, i_x, i_y;
285 vout_PlacePicture( p_vout, p_vout->p_sys->p_win->i_width,
286 p_vout->p_sys->p_win->i_height,
287 &i_x, &i_y, &i_width, &i_height );
289 glViewport( 0, 0, (GLint)i_width, (GLint)i_height );
293 glXSwapBuffers( p_sys->p_display, p_sys->gwnd );
297 glXSwapBuffers( p_sys->p_display, p_sys->p_win->video_window );
301 void SwitchContext( vout_thread_t *p_vout )
303 vout_sys_t *p_sys = p_vout->p_sys;
305 /* Change the current OpenGL context */
308 glXMakeContextCurrent( p_sys->p_display, p_sys->gwnd,
309 p_sys->gwnd, p_sys->gwctx );
313 glXMakeCurrent( p_sys->p_display, p_sys->p_win->video_window,