glx.c
资源名称:vlc-1.0.5.zip [点击查看]
上传用户:kjfoods
上传日期:2020-07-06
资源大小:29949k
文件大小:10k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * glx.c: GLX OpenGL provider
- *****************************************************************************
- * Copyright (C) 2004 the VideoLAN team
- * $Id: b82984aafb589df770c7fa995fd17cf582cb8e8f $
- *
- * Authors: Cyril Deguet <asmax@videolan.org>
- * Gildas Bazin <gbazin@videolan.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
- /*****************************************************************************
- * Preamble
- *****************************************************************************/
- #ifdef HAVE_CONFIG_H
- # include "config.h"
- #endif
- #include <errno.h> /* ENOMEM */
- #include <vlc_common.h>
- #include <vlc_plugin.h>
- #include <vlc_interface.h>
- #include <vlc_vout.h>
- #ifdef HAVE_SYS_SHM_H
- # include <sys/shm.h> /* shmget(), shmctl() */
- #endif
- #include <X11/Xlib.h>
- #include <X11/Xmd.h>
- #include <X11/Xutil.h>
- #include <X11/keysym.h>
- #ifdef HAVE_SYS_SHM_H
- # include <X11/extensions/XShm.h>
- #endif
- #ifdef DPMSINFO_IN_DPMS_H
- # include <X11/extensions/dpms.h>
- #endif
- #include <GL/glx.h>
- #include "xcommon.h"
- /* RV16 */
- //#define VLCGL_RGB_FORMAT GL_RGB
- //#define VLCGL_RGB_TYPE GL_UNSIGNED_SHORT_5_6_5
- /* RV24 */
- //#define VLCGL_RGB_FORMAT GL_RGB
- //#define VLCGL_RGB_TYPE GL_UNSIGNED_BYTE
- /* RV32 */
- #define VLCGL_RGB_FORMAT GL_RGBA
- #define VLCGL_RGB_TYPE GL_UNSIGNED_BYTE
- /*****************************************************************************
- * OpenGL provider interface
- *****************************************************************************/
- static int CreateOpenGL ( vlc_object_t * );
- static void DestroyOpenGL( vlc_object_t * );
- static int InitOpenGL ( vout_thread_t * );
- static void SwapBuffers ( vout_thread_t * );
- /*****************************************************************************
- * Local prototypes
- *****************************************************************************/
- static int InitGLX12 ( vout_thread_t * );
- static int InitGLX13 ( vout_thread_t * );
- static void SwitchContext( vout_thread_t * );
- /*****************************************************************************
- * Module descriptor
- *****************************************************************************/
- #define ALT_FS_TEXT N_("Alternate fullscreen method")
- #define ALT_FS_LONGTEXT N_(
- "There are two ways to make a fullscreen window, unfortunately each one "
- "has its drawbacks.n"
- "1) Let the window manager handle your fullscreen window (default), but "
- "things like taskbars will likely show on top of the video.n"
- "2) Completely bypass the window manager, but then nothing will be able "
- "to show on top of the video.")
- #define DISPLAY_TEXT N_("X11 display")
- #define DISPLAY_LONGTEXT N_(
- "X11 hardware display to use. By default VLC will "
- "use the value of the DISPLAY environment variable.")
- #define SCREEN_TEXT N_("Screen for fullscreen mode.")
- #define SCREEN_LONGTEXT N_(
- "Screen to use in fullscreen mode. For instance "
- "set it to 0 for first screen, 1 for the second.")
- vlc_module_begin ()
- set_shortname( "OpenGL(GLX)" )
- set_category( CAT_VIDEO )
- set_subcategory( SUBCAT_VIDEO_VOUT )
- set_description( N_("OpenGL(GLX) provider") )
- set_capability( "opengl provider", 50 )
- set_callbacks( CreateOpenGL, DestroyOpenGL )
- add_string( "glx-display", NULL, NULL, DISPLAY_TEXT, DISPLAY_LONGTEXT, true )
- add_obsolete_integer( "glx-adaptor" ) /* Deprecated since 1.0.4 */
- add_bool( "glx-altfullscreen", 0, NULL, ALT_FS_TEXT, ALT_FS_LONGTEXT, true )
- #ifdef HAVE_SYS_SHM_H
- add_obsolete_bool( "glx-shm" ) /* Deprecated since 1.0.4 */
- #endif
- #ifdef HAVE_XINERAMA
- add_integer ( "glx-xineramascreen", -1, NULL, SCREEN_TEXT, SCREEN_LONGTEXT, true )
- #endif
- vlc_module_end ()
- /*****************************************************************************
- * Exported prototypes
- *****************************************************************************/
- extern int Activate ( vlc_object_t * );
- extern void Deactivate ( vlc_object_t * );
- /*****************************************************************************
- * CreateOpenGL: initialize an OpenGL provider
- *****************************************************************************/
- static int CreateOpenGL( vlc_object_t *p_this )
- {
- vout_thread_t *p_vout = (vout_thread_t *)p_this;
- if( Activate( p_this ) != VLC_SUCCESS )
- {
- return VLC_EGENERIC;
- }
- /* Set the function pointer */
- p_vout->pf_init = InitOpenGL;
- p_vout->pf_swap = SwapBuffers;
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * DestroyOpenGL: destroys an OpenGL provider
- *****************************************************************************/
- static void DestroyOpenGL( vlc_object_t *p_this )
- {
- vout_thread_t *p_vout = (vout_thread_t *)p_this;
- vout_sys_t *p_sys = p_vout->p_sys;
- glXDestroyContext( p_sys->p_display, p_sys->gwctx );
- if( p_sys->b_glx13 )
- {
- glXDestroyWindow( p_sys->p_display, p_sys->gwnd );
- }
- Deactivate( p_this );
- }
- /*****************************************************************************
- * InitOpenGL: initializes OpenGL provider
- *****************************************************************************/
- static int InitOpenGL( vout_thread_t *p_vout )
- {
- /* Initialize GLX */
- if( !p_vout->p_sys->b_glx13 )
- {
- if( InitGLX12( p_vout ) != VLC_SUCCESS )
- {
- return VLC_EGENERIC;
- }
- }
- else
- {
- if( InitGLX13( p_vout ) != VLC_SUCCESS )
- {
- return VLC_EGENERIC;
- }
- }
- /* Set the OpenGL context _for the current thread_ */
- SwitchContext( p_vout );
- return VLC_SUCCESS;
- }
- int InitGLX12( vout_thread_t *p_vout )
- {
- vout_sys_t *p_sys = p_vout->p_sys;
- XVisualInfo *p_vi;
- int p_attr[] = { GLX_RGBA, GLX_RED_SIZE, 5, GLX_GREEN_SIZE, 5,
- GLX_BLUE_SIZE, 5, GLX_DOUBLEBUFFER, 0 };
- p_vi = glXChooseVisual( p_sys->p_display,
- DefaultScreen( p_sys->p_display), p_attr );
- if(! p_vi )
- {
- msg_Err( p_vout, "Cannot get GLX 1.2 visual" );
- return VLC_EGENERIC;
- }
- /* Create an OpenGL context */
- p_sys->gwctx = glXCreateContext( p_sys->p_display, p_vi, 0, True );
- XFree( p_vi );
- if( !p_sys->gwctx )
- {
- msg_Err( p_vout, "Cannot create OpenGL context");
- return VLC_EGENERIC;
- }
- return VLC_SUCCESS;
- }
- int InitGLX13( vout_thread_t *p_vout )
- {
- vout_sys_t *p_sys = p_vout->p_sys;
- int i_nb, ret = VLC_EGENERIC;
- GLXFBConfig *p_fbconfs = NULL, fbconf = NULL;
- XWindowAttributes att;
- static const int p_attr[] = {
- GLX_RED_SIZE, 5, GLX_GREEN_SIZE, 5, GLX_BLUE_SIZE, 5,
- GLX_DOUBLEBUFFER, True, GLX_X_RENDERABLE, True,
- GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT,
- None,
- };
- /* Get the FB configuration */
- p_fbconfs = glXChooseFBConfig( p_sys->p_display, p_sys->i_screen, p_attr, &i_nb );
- if( p_fbconfs == NULL )
- {
- msg_Err( p_vout, "Cannot get FB configurations");
- return VLC_EGENERIC;
- }
- /* We should really create the window _after_ the frame buffer
- * configuration was chosen, instead of selecting the frame buffer from
- * the window. That requires reworking xcommon.c though.
- * -- Courmisch */
- XGetWindowAttributes( p_sys->p_display, p_sys->p_win->video_window, &att );
- for( int i = 0; i < i_nb && !fbconf; i++ )
- {
- XVisualInfo *p_vi;
- /* Get the X11 visual */
- p_vi = glXGetVisualFromFBConfig( p_sys->p_display, p_fbconfs[i] );
- if( !p_vi )
- continue; /* OoM? */
- if( p_vi->visualid == att.visual->visualid )
- fbconf = p_fbconfs[i];
- XFree( p_vi );
- }
- if( !fbconf )
- {
- msg_Err( p_vout, "Cannot find matching frame buffer" );
- goto out;
- }
- /* Create the GLX window */
- p_sys->gwnd = glXCreateWindow( p_sys->p_display, fbconf,
- p_sys->p_win->video_window, NULL );
- if( p_sys->gwnd == None )
- {
- msg_Err( p_vout, "Cannot create GLX window" );
- goto out;
- }
- /* Create an OpenGL context */
- p_sys->gwctx = glXCreateNewContext( p_sys->p_display, fbconf,
- GLX_RGBA_TYPE, NULL, True );
- if( !p_sys->gwctx )
- msg_Err( p_vout, "Cannot create OpenGL context");
- else
- ret = VLC_SUCCESS;
- out:
- XFree( p_fbconfs );
- return ret;
- }
- /*****************************************************************************
- * SwapBuffers: swap front/back buffers
- *****************************************************************************/
- static void SwapBuffers( vout_thread_t *p_vout )
- {
- vout_sys_t *p_sys = p_vout->p_sys;
- unsigned int i_width, i_height, i_x, i_y;
- vout_PlacePicture( p_vout, p_vout->p_sys->p_win->i_width,
- p_vout->p_sys->p_win->i_height,
- &i_x, &i_y, &i_width, &i_height );
- glViewport( 0, 0, (GLint)i_width, (GLint)i_height );
- if( p_sys->b_glx13 )
- {
- glXSwapBuffers( p_sys->p_display, p_sys->gwnd );
- }
- else
- {
- glXSwapBuffers( p_sys->p_display, p_sys->p_win->video_window );
- }
- }
- void SwitchContext( vout_thread_t *p_vout )
- {
- vout_sys_t *p_sys = p_vout->p_sys;
- /* Change the current OpenGL context */
- if( p_sys->b_glx13 )
- {
- glXMakeContextCurrent( p_sys->p_display, p_sys->gwnd,
- p_sys->gwnd, p_sys->gwctx );
- }
- else
- {
- glXMakeCurrent( p_sys->p_display, p_sys->p_win->video_window,
- p_sys->gwctx );
- }
- }