1 /*****************************************************************************
2 * xosd.c : X On Screen Display interface
3 *****************************************************************************
4 * Copyright (C) 2001 VideoLAN
5 * $Id: xosd.c,v 1.7 2003/02/03 01:32:37 sam Exp $
7 * Authors: Loïc Minier <lool@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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
27 #include <stdlib.h> /* malloc(), free() */
38 /*****************************************************************************
39 * intf_sys_t: description and status of rc interface
40 *****************************************************************************/
43 input_thread_t * p_input; /* associated input thread */
44 xosd * p_osd; /* libxosd handle */
45 char * psz_source; /* current file || NULL */
48 #define MAX_LINE_LENGTH 256
50 /*****************************************************************************
52 *****************************************************************************/
53 static int Open ( vlc_object_t * );
54 static void Close ( vlc_object_t * );
56 static void Run ( intf_thread_t * );
58 /*****************************************************************************
60 *****************************************************************************/
61 #define POSITION_TEXT N_("flip vertical position")
62 #define POSITION_LONGTEXT N_("Display xosd output on the bottom of the " \
63 "screen instead of the top")
65 #define TXT_OFS_TEXT N_("vertical offset")
66 #define TXT_OFS_LONGTEXT N_("Vertical offset in pixels of the displayed text")
68 #define SHD_OFS_TEXT N_("shadow offset")
69 #define SHD_OFS_LONGTEXT N_("Offset in pixels of the shadow")
71 #define FONT_TEXT N_("font")
72 #define FONT_LONGTEXT N_("Font used to display text in the xosd output")
75 int i = getenv( "DISPLAY" ) == NULL ? 10 : 90;
76 add_category_hint( N_("XOSD module"), NULL );
77 add_bool( "xosd-position", 1, NULL, POSITION_TEXT, POSITION_LONGTEXT );
78 add_integer( "xosd-text-offset", 0, NULL, TXT_OFS_TEXT, TXT_OFS_LONGTEXT );
79 add_integer( "xosd-shadow-offset", 1, NULL,
80 SHD_OFS_TEXT, SHD_OFS_LONGTEXT );
81 add_string( "xosd-font", "-misc-fixed-medium-r-*-*-*-300-*-*-*-*-*-*",
82 NULL, FONT_TEXT, FONT_LONGTEXT );
83 set_description( _("xosd interface module") );
84 set_capability( "interface", i );
85 set_callbacks( Open, Close );
88 /*****************************************************************************
89 * Open: initialize and create stuff
90 *****************************************************************************/
91 static int Open( vlc_object_t *p_this )
93 intf_thread_t *p_intf = (intf_thread_t *)p_this;
95 /* Allocate instance and initialize some members */
96 p_intf->p_sys = (intf_sys_t *)malloc( sizeof( intf_sys_t ) );
97 if( p_intf->p_sys == NULL )
99 msg_Err( p_intf, "out of memory" );
103 if( getenv( "DISPLAY" ) == NULL )
105 msg_Err( p_intf, "no display, please set the DISPLAY variable" );
109 /* Initialize library */
110 p_intf->p_sys->p_osd =
111 #if defined(HAVE_XOSD_VERSION_0) || defined(HAVE_XOSD_VERSION_1)
112 xosd_init( config_GetPsz( p_intf, "xosd-font" ),
113 "LawnGreen", 3, XOSD_top, 0, 1 );
115 xosd_init( config_GetPsz( p_intf, "xosd-font" ),
116 "LawnGreen", 3, XOSD_top, 0, 0, 1 );
119 if( p_intf->p_sys->p_osd == NULL )
121 msg_Err( p_intf, "couldn't initialize libxosd" );
125 /* Initialize to NULL */
126 p_intf->p_sys->psz_source = NULL;
128 xosd_display( p_intf->p_sys->p_osd,
131 "xosd interface initialized" );
133 p_intf->pf_run = Run;
138 /*****************************************************************************
139 * Close: destroy interface stuff
140 *****************************************************************************/
141 static void Close( vlc_object_t *p_this )
143 intf_thread_t *p_intf = (intf_thread_t *)p_this;
145 if( p_intf->p_sys->psz_source ) free( p_intf->p_sys->psz_source );
147 /* Uninitialize library */
148 xosd_uninit( p_intf->p_sys->p_osd );
150 /* Destroy structure */
151 free( p_intf->p_sys );
154 /*****************************************************************************
156 *****************************************************************************
157 * This part of the interface runs in a separate thread
158 *****************************************************************************/
159 static void Run( intf_thread_t *p_intf )
161 p_intf->p_sys->p_input = NULL;
163 while( !p_intf->b_die )
165 /* Manage the input part */
166 if( p_intf->p_sys->p_input == NULL )
168 p_intf->p_sys->p_input = vlc_object_find( p_intf, VLC_OBJECT_INPUT,
171 else if( p_intf->p_sys->p_input->b_dead )
173 vlc_object_release( p_intf->p_sys->p_input );
174 p_intf->p_sys->p_input = NULL;
176 else /* We have a valid input */
178 /* Did source change? */
179 if ( (p_intf->p_sys->psz_source == NULL)
180 || (strcmp( p_intf->p_sys->psz_source,
181 p_intf->p_sys->p_input->psz_source ) != 0)
184 if( p_intf->p_sys->psz_source )
185 free( p_intf->p_sys->psz_source );
187 p_intf->p_sys->psz_source =
188 strdup( p_intf->p_sys->p_input->psz_source );
190 /* Set user preferences */
191 xosd_set_font( p_intf->p_sys->p_osd,
192 config_GetPsz( p_intf, "xosd-font" ) );
193 #ifdef HAVE_XOSD_VERSION_2
194 xosd_set_horizontal_offset( p_intf->p_sys->p_osd,
195 config_GetInt( p_intf, "xosd-text-offset" ) );
196 xosd_set_vertical_offset( p_intf->p_sys->p_osd,
197 config_GetInt( p_intf, "xosd-text-offset" ) );
199 xosd_set_offset( p_intf->p_sys->p_osd,
200 config_GetInt( p_intf, "xosd-text-offset" ) );
202 xosd_set_shadow_offset( p_intf->p_sys->p_osd,
203 config_GetInt( p_intf, "xosd-shadow-offset" ));
204 xosd_set_pos( p_intf->p_sys->p_osd,
205 config_GetInt( p_intf, "xosd-position" ) ? XOSD_bottom
209 xosd_display( p_intf->p_sys->p_osd,
212 p_intf->p_sys->psz_source );
216 msleep( INTF_IDLE_SLEEP );
219 if( p_intf->p_sys->p_input )
221 vlc_object_release( p_intf->p_sys->p_input );
222 p_intf->p_sys->p_input = NULL;