xvideo.c
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上传日期:2009-03-27
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- /*****************************************************************************
- * xvideo.c : Xvideo plugin for vlc
- *****************************************************************************
- * Copyright (C) 1998-2001 VideoLAN
- * $Id: xvideo.c 7522 2004-04-27 16:35:15Z sam $
- *
- * Authors: Shane Harper <shanegh@optusnet.com.au>
- * Vincent Seguin <seguin@via.ecp.fr>
- * Samuel Hocevar <sam@zoy.org>
- * David Kennedy <dkennedy@tinytoad.com>
- *
- * 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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
- *****************************************************************************/
- /*****************************************************************************
- * Preamble
- *****************************************************************************/
- #include <stdlib.h> /* malloc(), free() */
- #include <string.h> /* strerror() */
- #include <vlc/vlc.h>
- /*****************************************************************************
- * Exported prototypes
- *****************************************************************************/
- extern int E_(Activate) ( vlc_object_t * );
- extern void E_(Deactivate) ( vlc_object_t * );
- /*****************************************************************************
- * Module descriptor
- *****************************************************************************/
- #define ADAPTOR_TEXT N_("XVideo adaptor number")
- #define ADAPTOR_LONGTEXT N_(
- "If you graphics card provides several adaptors, this option allows you "
- "to choose which one will be used (you shouldn't have to change this).")
- #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 name")
- #define DISPLAY_LONGTEXT N_(
- "Specify the X11 hardware display you want to use. By default VLC will "
- "use the value of the DISPLAY environment variable.")
- #define CHROMA_TEXT N_("XVimage chroma format")
- #define CHROMA_LONGTEXT N_(
- "Force the XVideo renderer to use a specific chroma format instead of "
- "trying to improve performances by using the most efficient one.")
- #define SHM_TEXT N_("Use shared memory")
- #define SHM_LONGTEXT N_(
- "Use shared memory to communicate between VLC and the X server.")
- #define SCREEN_TEXT N_("Screen to be used for fullscreen mode.")
- #define SCREEN_LONGTEXT N_(
- "Choose the screen you want to use in fullscreen mode. For instance "
- "set it to 0 for first screen, 1 for the second.")
- vlc_module_begin();
- add_string( "xvideo-display", NULL, NULL, DISPLAY_TEXT, DISPLAY_LONGTEXT, VLC_TRUE );
- add_integer( "xvideo-adaptor", -1, NULL, ADAPTOR_TEXT, ADAPTOR_LONGTEXT, VLC_TRUE );
- add_bool( "xvideo-altfullscreen", 0, NULL, ALT_FS_TEXT, ALT_FS_LONGTEXT, VLC_TRUE );
- add_string( "xvideo-chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT, VLC_TRUE );
- #ifdef HAVE_SYS_SHM_H
- add_bool( "xvideo-shm", 1, NULL, SHM_TEXT, SHM_LONGTEXT, VLC_TRUE );
- #endif
- #ifdef HAVE_XINERAMA
- add_integer ( "xvideo-xineramascreen", 0, NULL, SCREEN_TEXT, SCREEN_LONGTEXT, VLC_TRUE );
- #endif
- set_description( _("XVideo extension video output") );
- set_capability( "video output", 150 );
- set_callbacks( E_(Activate), E_(Deactivate) );
- vlc_module_end();
- /* following functions are local */
- #if 0
- /*****************************************************************************
- * XVideoSetAttribute
- *****************************************************************************
- * This function can be used to set attributes, e.g. XV_BRIGHTNESS and
- * XV_CONTRAST. "f_value" should be in the range of 0 to 1.
- *****************************************************************************/
- static void XVideoSetAttribute( vout_thread_t *p_vout,
- char *attr_name, float f_value )
- {
- int i_attrib;
- XvAttribute *p_attrib;
- Display *p_display = p_vout->p_sys->p_display;
- int i_xvport = p_vout->p_sys->i_xvport;
- p_attrib = XvQueryPortAttributes( p_display, i_xvport, &i_attrib );
- do
- {
- i_attrib--;
- if( i_attrib >= 0 && !strcmp( p_attrib[ i_attrib ].name, attr_name ) )
- {
- int i_sv = f_value * ( p_attrib[ i_attrib ].max_value
- - p_attrib[ i_attrib ].min_value + 1 )
- + p_attrib[ i_attrib ].min_value;
- XvSetPortAttribute( p_display, i_xvport,
- XInternAtom( p_display, attr_name, False ), i_sv );
- break;
- }
- } while( i_attrib > 0 );
- if( p_attrib )
- XFree( p_attrib );
- }
- #endif