1 /*****************************************************************************
2 * xosd.c : X On Screen Display interface
3 *****************************************************************************
4 * Copyright (C) 2001 the VideoLAN team
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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
32 #include <vlc_common.h>
33 #include <vlc_plugin.h>
34 #include <vlc_playlist.h>
35 #include <vlc_input.h>
36 #include <vlc_interface.h>
41 /*****************************************************************************
42 * intf_sys_t: description and status of rc interface
43 *****************************************************************************/
46 xosd * p_osd; /* libxosd handle */
47 bool b_need_update; /* Update display ? */
48 vlc_mutex_t lock; /* lock for the condition variable */
49 vlc_cond_t cond; /* condition variable to know when to update */
52 #define MAX_LINE_LENGTH 256
54 /*****************************************************************************
56 *****************************************************************************/
57 static int Open ( vlc_object_t * );
58 static void Close ( vlc_object_t * );
60 static void Run ( intf_thread_t * );
62 static int PlaylistNext ( vlc_object_t *p_this, const char *psz_variable,
63 vlc_value_t oval, vlc_value_t nval, void *param );
65 /*****************************************************************************
67 *****************************************************************************/
68 #define POSITION_TEXT N_("Flip vertical position")
69 #define POSITION_LONGTEXT N_("Display XOSD output at the bottom of the " \
70 "screen instead of the top.")
72 #define TXT_OFS_TEXT N_("Vertical offset")
73 #define TXT_OFS_LONGTEXT N_("Vertical offset between the border of the screen "\
74 "and the displayed text (in pixels, defaults to "\
77 #define SHD_OFS_TEXT N_("Shadow offset")
78 #define SHD_OFS_LONGTEXT N_("Offset between the text and the shadow (in " \
79 "pixels, defaults to 2 pixels)." )
81 #define FONT_TEXT N_("Font")
82 #define FONT_LONGTEXT N_("Font used to display text in the XOSD output.")
83 #define COLOUR_TEXT N_("Color")
84 #define COLOUR_LONGTEXT N_("Color used to display text in the XOSD output.")
87 set_category( CAT_INTERFACE )
88 set_subcategory( SUBCAT_INTERFACE_CONTROL )
89 set_description( N_("XOSD interface") )
90 set_shortname( "XOSD" )
91 add_bool( "xosd-position", true, POSITION_TEXT, POSITION_LONGTEXT, true )
92 add_integer( "xosd-text-offset", 30, TXT_OFS_TEXT, TXT_OFS_LONGTEXT, true )
93 add_integer( "xosd-shadow-offset", 2,
94 SHD_OFS_TEXT, SHD_OFS_LONGTEXT, true )
95 add_string( "xosd-font", "-adobe-helvetica-bold-r-normal-*-*-160-*-*-p-*-iso8859-1",
96 FONT_TEXT, FONT_LONGTEXT, true )
97 add_string( "xosd-colour", "LawnGreen",
98 COLOUR_TEXT, COLOUR_LONGTEXT, true )
99 set_capability( "interface", 10 )
100 set_callbacks( Open, Close )
103 /*****************************************************************************
104 * Open: initialize and create stuff
105 *****************************************************************************/
106 static int Open( vlc_object_t *p_this )
108 intf_thread_t *p_intf = (intf_thread_t *)p_this;
111 char *psz_font, *psz_colour;
113 if (!vlc_xlib_init(p_this))
116 if( getenv( "DISPLAY" ) == NULL )
118 msg_Err( p_intf, "no display, please set the DISPLAY variable" );
122 /* Allocate instance and initialize some members */
123 p_sys = p_intf->p_sys = malloc( sizeof( intf_sys_t ) );
127 /* Initialize library */
128 psz_font = var_InheritString( p_intf, "xosd-font" );
129 psz_colour = var_InheritString( p_intf, "xosd-colour" );
131 p_osd = xosd_create( 1 );
134 msg_Err( p_intf, "couldn't initialize libxosd" );
140 p_sys->p_osd = p_osd;
142 /* Set user preferences */
143 xosd_set_outline_colour( p_osd, "black" );
144 xosd_set_font( p_osd, psz_font );
145 xosd_set_colour( p_osd, psz_colour );
146 xosd_set_timeout( p_osd, 3 );
147 xosd_set_pos( p_osd, var_InheritBool( p_intf, "xosd-position" ) ?
148 XOSD_bottom: XOSD_top );
149 xosd_set_horizontal_offset( p_osd,
150 var_InheritInteger( p_intf, "xosd-text-offset" ) );
151 xosd_set_vertical_offset( p_osd,
152 var_InheritInteger( p_intf, "xosd-text-offset" ) );
153 xosd_set_shadow_offset( p_osd,
154 var_InheritInteger( p_intf, "xosd-shadow-offset" ));
156 /* Initialize to NULL */
157 xosd_display( p_osd, 0, XOSD_string, "XOSD interface initialized" );
162 // Initialize mutex and condition variable before adding the callbacks
163 vlc_mutex_init( &p_sys->lock );
164 vlc_cond_init( &p_sys->cond );
166 playlist_t *p_playlist = pl_Get( p_intf );
167 var_AddCallback( p_playlist, "item-current", PlaylistNext, p_this );
168 var_AddCallback( p_playlist, "item-change", PlaylistNext, p_this );
170 p_sys->b_need_update = true;
171 p_intf->pf_run = Run;
175 /*****************************************************************************
176 * Close: destroy interface stuff
177 *****************************************************************************/
178 static void Close( vlc_object_t *p_this )
180 intf_thread_t *p_intf = (intf_thread_t *)p_this;
182 playlist_t *p_playlist = pl_Get( p_intf );
183 var_DelCallback( p_playlist, "item-current", PlaylistNext, p_this );
184 var_DelCallback( p_playlist, "item-change", PlaylistNext, p_this );
186 /* Uninitialize library */
187 xosd_destroy( p_intf->p_sys->p_osd );
189 /* Destroy structure */
190 vlc_cond_destroy( &p_intf->p_sys->cond );
191 vlc_mutex_destroy( &p_intf->p_sys->lock );
192 free( p_intf->p_sys );
195 /*****************************************************************************
197 *****************************************************************************
198 * This part of the interface runs in a separate thread
199 *****************************************************************************/
200 static void Run( intf_thread_t *p_intf )
202 playlist_t *p_playlist;
203 playlist_item_t *p_item = NULL;
204 char *psz_display = NULL;
205 int cancel = vlc_savecancel();
210 vlc_restorecancel( cancel );
211 vlc_mutex_lock( &p_intf->p_sys->lock );
212 mutex_cleanup_push( &p_intf->p_sys->lock );
213 while( !p_intf->p_sys->b_need_update )
214 vlc_cond_wait( &p_intf->p_sys->cond, &p_intf->p_sys->lock );
215 p_intf->p_sys->b_need_update = false;
218 // Compute the signal
219 cancel = vlc_savecancel();
220 p_playlist = pl_Get( p_intf );
223 // If the playlist is empty don't do anything
224 if( playlist_IsEmpty( p_playlist ) )
231 int i_status = playlist_Status( p_playlist );
232 if( i_status == PLAYLIST_STOPPED )
234 psz_display = strdup(_("Stop"));
236 else if( i_status == PLAYLIST_PAUSED )
238 psz_display = strdup(_("Pause"));
242 p_item = playlist_CurrentPlayingItem( p_playlist );
249 input_item_t *p_input = p_item->p_input;
251 mtime_t i_duration = input_item_GetDuration( p_input );
252 if( i_duration != -1 )
254 char psz_durationstr[MSTRTIME_MAX_SIZE];
255 secstotimestr( psz_durationstr, i_duration / 1000000 );
256 if( asprintf( &psz_display, "%s (%s)", p_input->psz_name, psz_durationstr ) == -1 )
260 psz_display = strdup( p_input->psz_name );
265 xosd_display( p_intf->p_sys->p_osd, 0, /* first line */
266 XOSD_string, psz_display );
270 static int PlaylistNext( vlc_object_t *p_this, const char *psz_variable,
271 vlc_value_t oval, vlc_value_t nval, void *param )
273 (void)p_this; (void)psz_variable; (void)oval; (void)nval;
274 intf_thread_t *p_intf = (intf_thread_t *)param;
276 // Send the signal using the condition variable
277 vlc_mutex_lock( &p_intf->p_sys->lock );
278 p_intf->p_sys->b_need_update = true;
279 vlc_cond_signal( &p_intf->p_sys->cond );
280 vlc_mutex_unlock( &p_intf->p_sys->lock );