1 /*****************************************************************************
2 * xosd.c : X On Screen Display interface
3 *****************************************************************************
4 * Copyright (C) 2001 VideoLAN
5 * $Id: xosd.c,v 1.4 2002/07/20 18:01:43 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 void intf_getfunctions ( function_list_t * p_function_list );
54 static int intf_Open ( intf_thread_t *p_intf );
55 static void intf_Close ( intf_thread_t *p_intf );
56 static void intf_Run ( intf_thread_t *p_intf );
58 /*****************************************************************************
59 * Build configuration tree.
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 ADD_CATEGORY_HINT( N_("Miscellaneous"), NULL )
76 ADD_BOOL( "xosd-position", 1, NULL, POSITION_TEXT, POSITION_LONGTEXT )
77 ADD_INTEGER( "xosd-text-offset", 0, NULL, TXT_OFS_TEXT, TXT_OFS_LONGTEXT )
78 ADD_INTEGER( "xosd-shadow-offset", 1, NULL, SHD_OFS_TEXT, SHD_OFS_LONGTEXT )
79 ADD_STRING( "xosd-font", "-misc-fixed-medium-r-*-*-*-300-*-*-*-*-*-*", NULL, FONT_TEXT, FONT_LONGTEXT )
81 // -misc-fixed-medium-r-normal-*-*-160-*-*-c-*-iso8859-15
84 SET_DESCRIPTION( _("xosd interface module") )
85 ADD_CAPABILITY( INTF, 40 )
89 intf_getfunctions( &p_module->p_functions->intf );
92 MODULE_DEACTIVATE_START
93 MODULE_DEACTIVATE_STOP
95 /*****************************************************************************
96 * Functions exported as capabilities. They are declared as static so that
97 * we don't pollute the namespace too much.
98 *****************************************************************************/
99 static void intf_getfunctions( function_list_t * p_function_list )
101 p_function_list->functions.intf.pf_open = intf_Open;
102 p_function_list->functions.intf.pf_close = intf_Close;
103 p_function_list->functions.intf.pf_run = intf_Run;
106 /*****************************************************************************
107 * intf_Open: initialize and create stuff
108 *****************************************************************************/
109 static int intf_Open( intf_thread_t * p_intf )
111 /* Allocate instance and initialize some members */
112 p_intf->p_sys = (intf_sys_t *)malloc( sizeof( intf_sys_t ) );
113 if( p_intf->p_sys == NULL )
115 msg_Err( p_intf, "out of memory" );
119 /* Initialize library */
120 p_intf->p_sys->p_osd =
121 xosd_init( "fixed", "LawnGreen", 3, XOSD_top, 0, 1 );
123 /* Initialize to NULL */
124 p_intf->p_sys->psz_source = NULL;
126 xosd_display( p_intf->p_sys->p_osd,
129 "xosd interface initialized" );
133 /*****************************************************************************
134 * intf_Close: destroy interface stuff
135 *****************************************************************************/
136 static void intf_Close( intf_thread_t *p_intf )
138 if( p_intf->p_sys->psz_source ) free( p_intf->p_sys->psz_source );
140 /* Uninitialize library */
141 xosd_uninit( p_intf->p_sys->p_osd );
143 /* Destroy structure */
144 free( p_intf->p_sys );
147 /*****************************************************************************
148 * intf_Run: xosd thread
149 *****************************************************************************
150 * This part of the interface runs in a separate thread
151 *****************************************************************************/
152 static void intf_Run( intf_thread_t *p_intf )
154 p_intf->p_sys->p_input = NULL;
156 while( !p_intf->b_die )
158 /* Manage the input part */
159 if( p_intf->p_sys->p_input == NULL )
161 p_intf->p_sys->p_input = vlc_object_find( p_intf, VLC_OBJECT_INPUT,
164 else if( p_intf->p_sys->p_input->b_dead )
166 vlc_object_release( p_intf->p_sys->p_input );
167 p_intf->p_sys->p_input = NULL;
169 else /* We have a valid input */
171 /* Did source change? */
172 if ( (p_intf->p_sys->psz_source == NULL)
173 || (strcmp( p_intf->p_sys->psz_source,
174 p_intf->p_sys->p_input->psz_source ) != 0)
177 if( p_intf->p_sys->psz_source )
178 free( p_intf->p_sys->psz_source );
180 p_intf->p_sys->psz_source =
181 strdup( p_intf->p_sys->p_input->psz_source );
183 /* Set user preferences */
184 xosd_set_font( p_intf->p_sys->p_osd,
185 config_GetPsz( p_intf, "xosd-font" ) );
186 xosd_set_offset( p_intf->p_sys->p_osd,
187 config_GetInt( p_intf, "xosd-text-offset" ) );
188 xosd_set_shadow_offset( p_intf->p_sys->p_osd,
189 config_GetInt( p_intf, "xosd-shadow-offset" ));
190 xosd_set_pos( p_intf->p_sys->p_osd,
191 config_GetInt( p_intf, "xosd-position" ) ? XOSD_bottom
195 xosd_display( p_intf->p_sys->p_osd,
198 p_intf->p_sys->psz_source );
202 msleep( INTF_IDLE_SLEEP );
205 if( p_intf->p_sys->p_input )
207 vlc_object_release( p_intf->p_sys->p_input );
208 p_intf->p_sys->p_input = NULL;