1 /*****************************************************************************
2 * x11.c: Screen capture module.
3 *****************************************************************************
4 * Copyright (C) 2004 the VideoLAN team
7 * Authors: Gildas Bazin <gbazin@videolan.org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
31 #include <X11/Xutil.h>
35 int screen_InitCapture( demux_t *p_demux )
37 demux_sys_t *p_sys = p_demux->p_sys;
39 XWindowAttributes win_info;
42 /* Open the display */
43 p_display = XOpenDisplay( NULL );
46 msg_Err( p_demux, "cannot open display" );
49 p_sys->p_data = (void *)p_display;
51 /* Get the parameters of the root window */
52 if( !XGetWindowAttributes( p_display,
53 DefaultRootWindow( p_display ),
56 msg_Err( p_demux, "can't get root window attributes" );
57 XCloseDisplay( p_display );
61 switch( win_info.depth )
63 case 8: /* FIXME: set the palette */
64 i_chroma = VLC_FOURCC('R','G','B','2'); break;
66 i_chroma = VLC_FOURCC('R','V','1','5'); break;
68 i_chroma = VLC_FOURCC('R','V','1','6'); break;
71 i_chroma = VLC_FOURCC('R','V','3','2');
75 msg_Err( p_demux, "unknown screen depth %i", win_info.depth );
76 XCloseDisplay( p_display );
80 es_format_Init( &p_sys->fmt, VIDEO_ES, i_chroma );
81 p_sys->fmt.video.i_width = win_info.width;
82 p_sys->fmt.video.i_height = win_info.height;
83 p_sys->fmt.video.i_bits_per_pixel = win_info.depth;
86 win_info.visual->red_mask;
87 win_info.visual->green_mask;
88 win_info.visual->blue_mask;
89 win_info.visual->bits_per_rgb;
95 int screen_CloseCapture( demux_t *p_demux )
97 demux_sys_t *p_sys = p_demux->p_sys;
98 Display *p_display = (Display *)p_sys->p_data;
100 XCloseDisplay( p_display );
104 block_t *screen_Capture( demux_t *p_demux )
106 demux_sys_t *p_sys = p_demux->p_sys;
107 Display *p_display = (Display *)p_sys->p_data;
112 image = XGetImage( p_display, DefaultRootWindow( p_display ),
113 0, 0, p_sys->fmt.video.i_width,
114 p_sys->fmt.video.i_height, AllPlanes, ZPixmap );
118 msg_Warn( p_demux, "cannot get image" );
122 i_size = image->bytes_per_line * image->height;
124 if( !( p_block = block_New( p_demux, i_size ) ) )
126 msg_Warn( p_demux, "cannot get block" );
127 XDestroyImage( image );
131 memcpy( p_block->p_buffer, image->data, i_size );
133 XDestroyImage( image );