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 *****************************************************************************/
33 #include <vlc_common.h>
34 #include <vlc_plugin.h>
35 #include <vlc_playlist.h>
36 #include <vlc_input.h>
37 #include <vlc_interface.h>
43 /*****************************************************************************
44 * intf_sys_t: description and status of rc interface
45 *****************************************************************************/
48 xosd * p_osd; /* libxosd handle */
49 bool b_need_update; /* Update display ? */
50 vlc_mutex_t lock; /* lock for the condition variable */
51 vlc_cond_t cond; /* condition variable to know when to update */
54 #define MAX_LINE_LENGTH 256
56 /*****************************************************************************
58 *****************************************************************************/
59 static int Open ( vlc_object_t * );
60 static void Close ( vlc_object_t * );
62 static void Run ( intf_thread_t * );
64 static int PlaylistNext ( vlc_object_t *p_this, const char *psz_variable,
65 vlc_value_t oval, vlc_value_t nval, void *param );
67 /*****************************************************************************
69 *****************************************************************************/
70 #define POSITION_TEXT N_("Flip vertical position")
71 #define POSITION_LONGTEXT N_("Display XOSD output at the bottom of the " \
72 "screen instead of the top.")
74 #define TXT_OFS_TEXT N_("Vertical offset")
75 #define TXT_OFS_LONGTEXT N_("Vertical offset between the border of the screen "\
76 "and the displayed text (in pixels, defaults to "\
79 #define SHD_OFS_TEXT N_("Shadow offset")
80 #define SHD_OFS_LONGTEXT N_("Offset between the text and the shadow (in " \
81 "pixels, defaults to 2 pixels)." )
83 #define FONT_TEXT N_("Font")
84 #define FONT_LONGTEXT N_("Font used to display text in the XOSD output.")
85 #define COLOUR_TEXT N_("Color")
86 #define COLOUR_LONGTEXT N_("Color used to display text in the XOSD output.")
89 set_category( CAT_INTERFACE )
90 set_subcategory( SUBCAT_INTERFACE_CONTROL )
91 set_description( N_("XOSD interface") )
92 set_shortname( "XOSD" )
93 add_bool( "xosd-position", 1, NULL, POSITION_TEXT, POSITION_LONGTEXT, true )
94 add_integer( "xosd-text-offset", 30, NULL, TXT_OFS_TEXT, TXT_OFS_LONGTEXT, true )
95 add_integer( "xosd-shadow-offset", 2, NULL,
96 SHD_OFS_TEXT, SHD_OFS_LONGTEXT, true )
97 add_string( "xosd-font",
98 "-adobe-helvetica-bold-r-normal-*-*-160-*-*-p-*-iso8859-1",
99 NULL, FONT_TEXT, FONT_LONGTEXT, true )
100 add_string( "xosd-colour", "LawnGreen",
101 NULL, COLOUR_TEXT, COLOUR_LONGTEXT, true )
102 set_capability( "interface", 10 )
103 set_callbacks( Open, Close )
106 /*****************************************************************************
107 * Open: initialize and create stuff
108 *****************************************************************************/
109 static int Open( vlc_object_t *p_this )
111 intf_thread_t *p_intf = (intf_thread_t *)p_this;
113 char *psz_font, *psz_colour;
115 /* Allocate instance and initialize some members */
116 p_intf->p_sys = malloc( sizeof( intf_sys_t ) );
117 if( p_intf->p_sys == NULL )
120 if( getenv( "DISPLAY" ) == NULL )
122 msg_Err( p_intf, "no display, please set the DISPLAY variable" );
123 free( p_intf->p_sys );
127 /* Initialize library */
128 #if defined(HAVE_XOSD_VERSION_0) || defined(HAVE_XOSD_VERSION_1)
129 psz_font = config_GetPsz( p_intf, "xosd-font" );
130 psz_colour = config_GetPsz( p_intf,"xosd-colour" );
131 p_osd = p_intf->p_sys->p_osd = xosd_init( psz_font, psz_colour, 3,
136 if( p_intf->p_sys->p_osd == NULL )
138 msg_Err( p_intf, "couldn't initialize libxosd" );
139 free( p_intf->p_sys );
143 p_osd = p_intf->p_sys->p_osd = xosd_create( 1 );
146 msg_Err( p_intf, "couldn't initialize libxosd" );
147 free( p_intf->p_sys );
151 psz_colour = config_GetPsz( p_intf, "xosd-colour" );
152 xosd_set_colour( p_osd, psz_colour );
153 xosd_set_timeout( p_osd, 3 );
157 // Initialize mutex and condition variable before adding the callbacks
158 vlc_mutex_init( &p_intf->p_sys->lock );
159 vlc_cond_init( &p_intf->p_sys->cond );
161 playlist_t *p_playlist = pl_Hold( p_intf );
162 var_AddCallback( p_playlist, "item-current", PlaylistNext, p_this );
163 var_AddCallback( p_playlist, "item-change", PlaylistNext, p_this );
164 pl_Release( p_intf );
166 /* Set user preferences */
167 psz_font = config_GetPsz( p_intf, "xosd-font" );
168 xosd_set_font( p_intf->p_sys->p_osd, psz_font );
170 xosd_set_outline_colour( p_intf->p_sys->p_osd,"black" );
171 #ifdef HAVE_XOSD_VERSION_2
172 xosd_set_horizontal_offset( p_intf->p_sys->p_osd,
173 config_GetInt( p_intf, "xosd-text-offset" ) );
174 xosd_set_vertical_offset( p_intf->p_sys->p_osd,
175 config_GetInt( p_intf, "xosd-text-offset" ) );
177 xosd_set_offset( p_intf->p_sys->p_osd,
178 config_GetInt( p_intf, "xosd-text-offset" ) );
180 xosd_set_shadow_offset( p_intf->p_sys->p_osd,
181 config_GetInt( p_intf, "xosd-shadow-offset" ));
182 xosd_set_pos( p_intf->p_sys->p_osd,
183 config_GetInt( p_intf, "xosd-position" ) ?
184 XOSD_bottom: XOSD_top );
186 /* Initialize to NULL */
187 xosd_display( p_osd, 0, XOSD_string, "XOSD interface initialized" );
189 p_intf->pf_run = Run;
191 p_intf->p_sys->b_need_update = true;
196 /*****************************************************************************
197 * Close: destroy interface stuff
198 *****************************************************************************/
199 static void Close( vlc_object_t *p_this )
201 intf_thread_t *p_intf = (intf_thread_t *)p_this;
203 playlist_t *p_playlist = pl_Hold( p_intf );
204 var_DelCallback( p_playlist, "item-current", PlaylistNext, p_this );
205 var_DelCallback( p_playlist, "item-change", PlaylistNext, p_this );
206 pl_Release( p_intf );
208 /* Uninitialize library */
209 xosd_destroy( p_intf->p_sys->p_osd );
211 /* Destroy structure */
212 vlc_cond_destroy( &p_intf->p_sys->cond );
213 vlc_mutex_destroy( &p_intf->p_sys->lock );
214 free( p_intf->p_sys );
217 /*****************************************************************************
219 *****************************************************************************
220 * This part of the interface runs in a separate thread
221 *****************************************************************************/
222 static void Run( intf_thread_t *p_intf )
224 playlist_t *p_playlist;
225 playlist_item_t *p_item = NULL;
226 char *psz_display = NULL;
227 int cancel = vlc_savecancel();
232 vlc_restorecancel( cancel );
233 vlc_mutex_lock( &p_intf->p_sys->lock );
234 mutex_cleanup_push( &p_intf->p_sys->lock );
235 while( !p_intf->p_sys->b_need_update )
236 vlc_cond_wait( &p_intf->p_sys->cond, &p_intf->p_sys->lock );
237 p_intf->p_sys->b_need_update = false;
240 // Compute the signal
241 cancel = vlc_savecancel();
242 p_playlist = pl_Hold( p_intf );
245 // If the playlist is empty don't do anything
246 if( playlist_IsEmpty( p_playlist ) )
249 pl_Release( p_intf );
254 int i_status = playlist_Status( p_playlist );
255 if( i_status == PLAYLIST_STOPPED )
257 psz_display = strdup(_("Stop"));
259 pl_Release( p_intf );
261 else if( i_status == PLAYLIST_PAUSED )
263 psz_display = strdup(_("Pause"));
265 pl_Release( p_intf );
269 p_item = playlist_CurrentPlayingItem( p_playlist );
273 pl_Release( p_intf );
276 input_item_t *p_input = p_item->p_input;
277 vlc_gc_incref( p_input );
280 pl_Release( p_intf );
282 mtime_t i_duration = input_item_GetDuration( p_input );
283 if( i_duration != -1 )
285 char psz_durationstr[MSTRTIME_MAX_SIZE];
286 secstotimestr( psz_durationstr, i_duration / 1000000 );
287 if( asprintf( &psz_display, "%s (%s)", p_input->psz_name, psz_durationstr ) == -1 )
291 psz_display = strdup( p_input->psz_name );
293 vlc_gc_decref( p_input );
297 xosd_display( p_intf->p_sys->p_osd, 0, /* first line */
298 XOSD_string, psz_display );
302 static int PlaylistNext( vlc_object_t *p_this, const char *psz_variable,
303 vlc_value_t oval, vlc_value_t nval, void *param )
305 (void)p_this; (void)psz_variable; (void)oval; (void)nval;
306 intf_thread_t *p_intf = (intf_thread_t *)param;
308 // Send the signal using the condition variable
309 vlc_mutex_lock( &p_intf->p_sys->lock );
310 p_intf->p_sys->b_need_update = true;
311 vlc_cond_signal( &p_intf->p_sys->cond );
312 vlc_mutex_unlock( &p_intf->p_sys->lock );