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 */
31 #include <vlc_interface.h>
35 # include <sys/shm.h> /* shmget(), shmctl() */
40 #include <X11/Xutil.h>
41 #include <X11/keysym.h>
43 # include <X11/extensions/XShm.h>
45 #ifdef DPMSINFO_IN_DPMS_H
46 # include <X11/extensions/dpms.h>
54 //#define VLCGL_RGB_FORMAT GL_RGB
55 //#define VLCGL_RGB_TYPE GL_UNSIGNED_SHORT_5_6_5
58 //#define VLCGL_RGB_FORMAT GL_RGB
59 //#define VLCGL_RGB_TYPE GL_UNSIGNED_BYTE
62 #define VLCGL_RGB_FORMAT GL_RGBA
63 #define VLCGL_RGB_TYPE GL_UNSIGNED_BYTE
66 /*****************************************************************************
67 * OpenGL provider interface
68 *****************************************************************************/
69 static int CreateOpenGL ( vlc_object_t * );
70 static void DestroyOpenGL( vlc_object_t * );
71 static int InitOpenGL ( vout_thread_t * );
72 static void SwapBuffers ( vout_thread_t * );
74 /*****************************************************************************
76 *****************************************************************************/
77 static int InitGLX12 ( vout_thread_t * );
78 static int InitGLX13 ( vout_thread_t * );
79 static void SwitchContext( vout_thread_t * );
81 /*****************************************************************************
83 *****************************************************************************/
84 #define ADAPTOR_TEXT N_("XVideo adaptor number")
85 #define ADAPTOR_LONGTEXT N_( \
86 "If your graphics card provides several adaptors, you have " \
87 "to choose which one will be used (you shouldn't have to change this).")
89 #define ALT_FS_TEXT N_("Alternate fullscreen method")
90 #define ALT_FS_LONGTEXT N_( \
91 "There are two ways to make a fullscreen window, unfortunately each one " \
92 "has its drawbacks.\n" \
93 "1) Let the window manager handle your fullscreen window (default), but " \
94 "things like taskbars will likely show on top of the video.\n" \
95 "2) Completely bypass the window manager, but then nothing will be able " \
96 "to show on top of the video.")
98 #define DISPLAY_TEXT N_("X11 display")
99 #define DISPLAY_LONGTEXT N_( \
100 "X11 hardware display to use. By default VLC will " \
101 "use the value of the DISPLAY environment variable.")
103 #define SCREEN_TEXT N_("Screen for fullscreen mode.")
104 #define SCREEN_LONGTEXT N_( \
105 "Screen to use in fullscreen mode. For instance " \
106 "set it to 0 for first screen, 1 for the second.")
109 set_shortname( "OpenGL(GLX)" );
110 set_category( CAT_VIDEO );
111 set_subcategory( SUBCAT_VIDEO_VOUT );
112 set_description( _("OpenGL(GLX) provider") );
113 set_capability( "opengl provider", 50 );
114 set_callbacks( CreateOpenGL, DestroyOpenGL );
116 add_string( "glx-display", NULL, NULL, DISPLAY_TEXT, DISPLAY_LONGTEXT, VLC_TRUE );
117 add_integer( "glx-adaptor", -1, NULL, ADAPTOR_TEXT, ADAPTOR_LONGTEXT, VLC_TRUE );
118 add_bool( "glx-altfullscreen", 0, NULL, ALT_FS_TEXT, ALT_FS_LONGTEXT, VLC_TRUE );
120 add_integer ( "glx-xineramascreen", 0, NULL, SCREEN_TEXT, SCREEN_LONGTEXT, VLC_TRUE );
124 /*****************************************************************************
125 * Exported prototypes
126 *****************************************************************************/
127 extern int E_(Activate) ( vlc_object_t * );
128 extern void E_(Deactivate) ( vlc_object_t * );
130 /*****************************************************************************
131 * CreateOpenGL: initialize an OpenGL provider
132 *****************************************************************************/
133 static int CreateOpenGL( vlc_object_t *p_this )
135 vout_thread_t *p_vout = (vout_thread_t *)p_this;
137 if( E_(Activate)( p_this ) != VLC_SUCCESS )
142 /* Set the function pointer */
143 p_vout->pf_init = InitOpenGL;
144 p_vout->pf_swap = SwapBuffers;
149 /*****************************************************************************
150 * DestroyOpenGL: destroys an OpenGL provider
151 *****************************************************************************/
152 static void DestroyOpenGL( vlc_object_t *p_this )
154 vout_thread_t *p_vout = (vout_thread_t *)p_this;
155 vout_sys_t *p_sys = p_vout->p_sys;
157 glXDestroyContext( p_sys->p_display, p_sys->gwctx );
160 glXDestroyWindow( p_sys->p_display, p_sys->gwnd );
163 E_(Deactivate)( p_this );
166 /*****************************************************************************
167 * InitOpenGL: initializes OpenGL provider
168 *****************************************************************************/
169 static int InitOpenGL( vout_thread_t *p_vout )
172 if( !p_vout->p_sys->b_glx13 )
174 if( InitGLX12( p_vout ) != VLC_SUCCESS )
181 if( InitGLX13( p_vout ) != VLC_SUCCESS )
187 /* Set the OpenGL context _for the current thread_ */
188 SwitchContext( p_vout );
193 int InitGLX12( vout_thread_t *p_vout )
195 vout_sys_t *p_sys = p_vout->p_sys;
197 int p_attr[] = { GLX_RGBA, GLX_RED_SIZE, 5, GLX_GREEN_SIZE, 5,
198 GLX_BLUE_SIZE, 5, GLX_DOUBLEBUFFER, 0 };
200 p_vi = glXChooseVisual( p_sys->p_display,
201 DefaultScreen( p_sys->p_display), p_attr );
204 msg_Err( p_vout, "Cannot get GLX 1.2 visual" );
208 /* Create an OpenGL context */
209 p_sys->gwctx = glXCreateContext( p_sys->p_display, p_vi, 0, True );
213 msg_Err( p_vout, "Cannot create OpenGL context");
220 int InitGLX13( vout_thread_t *p_vout )
222 vout_sys_t *p_sys = p_vout->p_sys;
224 GLXFBConfig *p_fbconfs, fbconf;
226 int p_attr[] = { GLX_RED_SIZE, 5, GLX_GREEN_SIZE, 5,
227 GLX_BLUE_SIZE, 5, GLX_DOUBLEBUFFER, True,
228 GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT, 0 };
230 /* Get the FB configuration */
231 p_fbconfs = glXChooseFBConfig( p_sys->p_display, 0, p_attr, &i_nbelem );
232 if( (i_nbelem <= 0) || !p_fbconfs )
234 msg_Err( p_vout, "Cannot get FB configurations");
235 if( p_fbconfs ) XFree( p_fbconfs );
238 fbconf = p_fbconfs[0];
240 /* Get the X11 visual */
241 p_vi = glXGetVisualFromFBConfig( p_sys->p_display, fbconf );
244 msg_Err( p_vout, "Cannot get X11 visual" );
250 /* Create the GLX window */
251 p_sys->gwnd = glXCreateWindow( p_sys->p_display, fbconf,
252 p_sys->p_win->video_window, NULL );
253 if( p_sys->gwnd == None )
255 msg_Err( p_vout, "Cannot create GLX window" );
259 /* Create an OpenGL context */
260 p_sys->gwctx = glXCreateNewContext( p_sys->p_display, fbconf,
261 GLX_RGBA_TYPE, NULL, True );
265 msg_Err( p_vout, "Cannot create OpenGL context");
272 /*****************************************************************************
273 * SwapBuffers: swap front/back buffers
274 *****************************************************************************/
275 static void SwapBuffers( vout_thread_t *p_vout )
277 vout_sys_t *p_sys = p_vout->p_sys;
278 unsigned int i_width, i_height, i_x, i_y;
280 vout_PlacePicture( p_vout, p_vout->p_sys->p_win->i_width,
281 p_vout->p_sys->p_win->i_height,
282 &i_x, &i_y, &i_width, &i_height );
284 glViewport( 0, 0, (GLint)i_width, (GLint)i_height );
288 glXSwapBuffers( p_sys->p_display, p_sys->gwnd );
292 glXSwapBuffers( p_sys->p_display, p_sys->p_win->video_window );
296 void SwitchContext( vout_thread_t *p_vout )
298 vout_sys_t *p_sys = p_vout->p_sys;
300 /* Change the current OpenGL context */
303 glXMakeContextCurrent( p_sys->p_display, p_sys->gwnd,
304 p_sys->gwnd, p_sys->gwctx );
308 glXMakeCurrent( p_sys->p_display, p_sys->p_win->video_window,