playlist_CreateNode(): add an argument to specify an input_item_t to be linked with...
[vlc.git] / src / playlist / engine.c
1 /*****************************************************************************
2  * engine.c : Run the playlist and handle its control
3  *****************************************************************************
4  * Copyright (C) 1999-2007 the VideoLAN team
5  * $Id$
6  *
7  * Authors: Samuel Hocevar <sam@zoy.org>
8  *          ClĂ©ment Stenac <zorglub@videolan.org>
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation; either version 2 of the License, or
13  * (at your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  * GNU General Public License for more details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with this program; if not, write to the Free Software
22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23  *****************************************************************************/
24
25 #include <vlc/vlc.h>
26 #include <vlc_vout.h>
27 #include <vlc_sout.h>
28 #include <vlc_playlist.h>
29 #include <vlc_interface.h>
30 #include "playlist_internal.h"
31 #include "stream_output/stream_output.h" /* sout_DeleteInstance */
32
33 /*****************************************************************************
34  * Local prototypes
35  *****************************************************************************/
36 static void VariablesInit( playlist_t *p_playlist );
37
38 static int RandomCallback( vlc_object_t *p_this, char const *psz_cmd,
39                            vlc_value_t oldval, vlc_value_t newval, void *a )
40 {
41     (void)psz_cmd; (void)oldval; (void)newval; (void)a;
42
43     ((playlist_t*)p_this)->b_reset_currently_playing = VLC_TRUE;
44     playlist_Signal( ((playlist_t*)p_this) );
45     return VLC_SUCCESS;
46 }
47
48 /**
49  * Create playlist
50  *
51  * Create a playlist structure.
52  * \param p_parent the vlc object that is to be the parent of this playlist
53  * \return a pointer to the created playlist, or NULL on error
54  */
55 playlist_t * playlist_Create( vlc_object_t *p_parent )
56 {
57     playlist_t *p_playlist;
58     vlc_bool_t b_save;
59     int i_tree;
60
61     /* Allocate structure */
62     p_playlist = vlc_object_create( p_parent, VLC_OBJECT_PLAYLIST );
63     if( !p_playlist )
64     {
65         msg_Err( p_parent, "out of memory" );
66         return NULL;
67     }
68
69     TAB_INIT( p_playlist->i_sds, p_playlist->pp_sds );
70
71     p_parent->p_libvlc->p_playlist = p_playlist;
72
73     VariablesInit( p_playlist );
74
75     /* Initialise data structures */
76     vlc_mutex_init( p_playlist, &p_playlist->gc_lock );
77     p_playlist->i_last_playlist_id = 0;
78     p_playlist->i_last_input_id = 0;
79     p_playlist->p_input = NULL;
80
81     p_playlist->gc_date = 0;
82     p_playlist->b_cant_sleep = VLC_FALSE;
83
84     ARRAY_INIT( p_playlist->items );
85     ARRAY_INIT( p_playlist->all_items );
86     ARRAY_INIT( p_playlist->input_items );
87     ARRAY_INIT( p_playlist->current );
88
89     p_playlist->i_current_index = 0;
90     p_playlist->b_reset_currently_playing = VLC_TRUE;
91     p_playlist->last_rebuild_date = 0;
92
93     i_tree = var_CreateGetBool( p_playlist, "playlist-tree" );
94     p_playlist->b_always_tree = (i_tree == 1);
95     p_playlist->b_never_tree = (i_tree == 2);
96
97     p_playlist->b_doing_ml = VLC_FALSE;
98
99     p_playlist->b_auto_preparse =
100                         var_CreateGetBool( p_playlist, "auto-preparse") ;
101
102     p_playlist->p_root_category = playlist_NodeCreate( p_playlist, NULL, NULL,
103                                     0, NULL );
104     p_playlist->p_root_onelevel = playlist_NodeCreate( p_playlist, NULL, NULL,
105                                     0, p_playlist->p_root_category->p_input );
106
107     if( !p_playlist->p_root_category || !p_playlist->p_root_onelevel )
108         return NULL;
109
110     /* Create playlist and media library */
111     playlist_NodesPairCreate( p_playlist, _( "Playlist" ),
112                             &p_playlist->p_local_category,
113                             &p_playlist->p_local_onelevel, VLC_FALSE );
114
115     p_playlist->p_local_category->i_flags |= PLAYLIST_RO_FLAG;
116     p_playlist->p_local_onelevel->i_flags |= PLAYLIST_RO_FLAG;
117
118     if( !p_playlist->p_local_category || !p_playlist->p_local_onelevel ||
119         !p_playlist->p_local_category->p_input ||
120         !p_playlist->p_local_onelevel->p_input )
121         return NULL;
122
123     if( config_GetInt( p_playlist, "media-library") )
124     {
125         playlist_NodesPairCreate( p_playlist, _( "Media Library" ),
126                             &p_playlist->p_ml_category,
127                             &p_playlist->p_ml_onelevel, VLC_FALSE );
128
129         if(!p_playlist->p_ml_category || !p_playlist->p_ml_onelevel)
130             return NULL;
131
132         p_playlist->p_ml_category->i_flags |= PLAYLIST_RO_FLAG;
133         p_playlist->p_ml_onelevel->i_flags |= PLAYLIST_RO_FLAG;
134     }
135     else
136     {
137         p_playlist->p_ml_category = p_playlist->p_ml_onelevel = NULL;
138     }
139
140     /* Initial status */
141     p_playlist->status.p_item = NULL;
142     p_playlist->status.p_node = p_playlist->p_local_onelevel;
143     p_playlist->request.b_request = VLC_FALSE;
144     p_playlist->status.i_status = PLAYLIST_STOPPED;
145
146     p_playlist->i_sort = SORT_ID;
147     p_playlist->i_order = ORDER_NORMAL;
148
149     b_save = p_playlist->b_auto_preparse;
150     p_playlist->b_auto_preparse = VLC_FALSE;
151     playlist_MLLoad( p_playlist );
152     p_playlist->b_auto_preparse = VLC_TRUE;
153     return p_playlist;
154 }
155
156 void playlist_Destroy( playlist_t *p_playlist )
157 {
158     var_Destroy( p_playlist, "intf-change" );
159     var_Destroy( p_playlist, "item-change" );
160     var_Destroy( p_playlist, "playlist-current" );
161     var_Destroy( p_playlist, "intf-popmenu" );
162     var_Destroy( p_playlist, "intf-show" );
163     var_Destroy( p_playlist, "play-and-stop" );
164     var_Destroy( p_playlist, "play-and-exit" );
165     var_Destroy( p_playlist, "random" );
166     var_Destroy( p_playlist, "repeat" );
167     var_Destroy( p_playlist, "loop" );
168     var_Destroy( p_playlist, "activity" );
169
170     vlc_mutex_destroy( &p_playlist->gc_lock );
171     vlc_object_detach( p_playlist );
172     vlc_object_destroy( p_playlist );
173 }
174
175 /* Destroy remaining objects */
176 static void ObjectGarbageCollector( playlist_t *p_playlist, vlc_bool_t b_force )
177 {
178     vlc_object_t *p_obj;
179
180     if( !b_force )
181     {
182         if( mdate() - p_playlist->gc_date < 1000000 )
183         {
184             p_playlist->b_cant_sleep = VLC_TRUE;
185             return;
186         }
187         else if( p_playlist->gc_date == 0 )
188             return;
189     }
190
191     vlc_mutex_lock( &p_playlist->gc_lock );
192     while( ( p_obj = vlc_object_find( p_playlist, VLC_OBJECT_VOUT,
193                                                   FIND_CHILD ) ) )
194     {
195         if( p_obj->p_parent != VLC_OBJECT(p_playlist) )
196         {
197             vlc_object_release( p_obj );
198             break;
199         }
200         msg_Dbg( p_playlist, "garbage collector destroying 1 vout" );
201         vlc_object_detach( p_obj );
202         vlc_object_release( p_obj );
203         vout_Destroy( (vout_thread_t *)p_obj );
204     }
205     while( ( p_obj = vlc_object_find( p_playlist, VLC_OBJECT_SOUT,
206                                                   FIND_CHILD ) ) )
207     {
208         if( p_obj->p_parent != VLC_OBJECT(p_playlist) )
209         {
210             vlc_object_release( p_obj );
211             break;
212         }
213         msg_Dbg( p_playlist, "garbage collector destroying 1 sout" );
214         vlc_object_detach( p_obj );
215         vlc_object_release( p_obj );
216         sout_DeleteInstance( (sout_instance_t*)p_obj );
217     }
218     p_playlist->b_cant_sleep = VLC_FALSE;
219     vlc_mutex_unlock( &p_playlist->gc_lock );
220 }
221
222 /** Main loop for the playlist */
223 void playlist_MainLoop( playlist_t *p_playlist )
224 {
225     playlist_item_t *p_item = NULL;
226     vlc_bool_t b_playexit = var_GetBool( p_playlist, "play-and-exit" );
227     PL_LOCK;
228
229     if( p_playlist->b_reset_currently_playing &&
230         mdate() - p_playlist->last_rebuild_date > 30000 ) // 30 ms
231     {
232         ResetCurrentlyPlaying( p_playlist, var_GetBool( p_playlist, "random"),
233                              p_playlist->status.p_item );
234         p_playlist->last_rebuild_date = mdate();
235     }
236
237 check_input:
238     /* If there is an input, check that it doesn't need to die. */
239     if( p_playlist->p_input )
240     {
241         if( p_playlist->request.b_request && !p_playlist->p_input->b_die )
242         {
243             PL_DEBUG( "incoming request - stopping current input" );
244             input_StopThread( p_playlist->p_input );
245         }
246
247         /* This input is dead. Remove it ! */
248         if( p_playlist->p_input->b_dead )
249         {
250             int i_activity;
251             input_thread_t *p_input;
252             PL_DEBUG( "dead input" );
253
254             p_input = p_playlist->p_input;
255             p_playlist->p_input = NULL;
256
257             /* Release the playlist lock, because we may get stuck
258              * in input_DestroyThread() for some time. */
259             PL_UNLOCK
260
261             /* Destroy input */
262             input_DestroyThread( p_input );
263
264             PL_LOCK;
265
266             p_playlist->gc_date = mdate();
267             p_playlist->b_cant_sleep = VLC_TRUE;
268
269             if( p_playlist->status.p_item->i_flags
270                 & PLAYLIST_REMOVE_FLAG )
271             {
272                  PL_DEBUG( "%s was marked for deletion, deleting",
273                                  PLI_NAME( p_playlist->status.p_item  ) );
274                  playlist_ItemDelete( p_playlist->status.p_item );
275                  if( p_playlist->request.p_item == p_playlist->status.p_item )
276                      p_playlist->request.p_item = NULL;
277                  p_playlist->status.p_item = NULL;
278             }
279
280             i_activity= var_GetInteger( p_playlist, "activity") ;
281             var_SetInteger( p_playlist, "activity", i_activity -
282                             DEFAULT_INPUT_ACTIVITY );
283             goto check_input;
284         }
285         /* This input is dying, let it do */
286         else if( p_playlist->p_input->b_die )
287         {
288             PL_DEBUG( "dying input" );
289             PL_UNLOCK;
290             msleep( 25000 ); // 25 ms
291             PL_LOCK;
292             goto check_input;
293         }
294         /* This input has finished, ask it to die ! */
295         else if( p_playlist->p_input->b_error
296                   || p_playlist->p_input->b_eof )
297         {
298             PL_DEBUG( "finished input" );
299             input_StopThread( p_playlist->p_input );
300             /* No need to wait here, we'll wait in the p_input->b_die case */
301             goto check_input;
302         }
303         else if( p_playlist->p_input->i_state != INIT_S )
304         {
305             PL_UNLOCK;
306             ObjectGarbageCollector( p_playlist, VLC_FALSE );
307             PL_LOCK;
308         }
309     }
310     else
311     {
312         /* No input. Several cases
313          *  - No request, running status -> start new item
314          *  - No request, stopped status -> collect garbage
315          *  - Request, running requested -> start new item
316          *  - Request, stopped requested -> collect garbage
317          */
318          if( (!p_playlist->request.b_request &&
319               p_playlist->status.i_status != PLAYLIST_STOPPED) ||
320               ( p_playlist->request.b_request &&
321                 p_playlist->request.i_status != PLAYLIST_STOPPED ) )
322          {
323              msg_Dbg( p_playlist, "starting new item" );
324              p_item = playlist_NextItem( p_playlist );
325
326              if( p_item == NULL )
327              {
328                 msg_Dbg( p_playlist, "nothing to play" );
329                 p_playlist->status.i_status = PLAYLIST_STOPPED;
330                 PL_UNLOCK
331
332                 if( b_playexit == VLC_TRUE )
333                 {
334                     msg_Info( p_playlist, "end of playlist, exiting" );
335                     vlc_object_kill( p_playlist->p_libvlc );
336                 }
337                 ObjectGarbageCollector( p_playlist, VLC_TRUE );
338                 return;
339              }
340              playlist_PlayItem( p_playlist, p_item );
341          }
342          else
343          {
344             const vlc_bool_t b_gc_forced = p_playlist->status.i_status != PLAYLIST_STOPPED;
345
346             p_playlist->status.i_status = PLAYLIST_STOPPED;
347             if( p_playlist->status.p_item &&
348                 p_playlist->status.p_item->i_flags & PLAYLIST_REMOVE_FLAG )
349             {
350                 PL_DEBUG( "deleting item marked for deletion" );
351                 playlist_ItemDelete( p_playlist->status.p_item );
352                 p_playlist->status.p_item = NULL;
353             }
354
355             /* Collect garbage */
356             PL_UNLOCK;
357             ObjectGarbageCollector( p_playlist, b_gc_forced );
358             PL_LOCK;
359         }
360     }
361     PL_UNLOCK
362 }
363
364 /** Playlist dying last loop */
365 void playlist_LastLoop( playlist_t *p_playlist )
366 {
367     vlc_object_t *p_obj;
368
369     /* If there is an input, kill it */
370     while( 1 )
371     {
372         PL_LOCK
373
374         if( p_playlist->p_input == NULL )
375         {
376             PL_UNLOCK
377             break;
378         }
379
380         if( p_playlist->p_input->b_dead )
381         {
382             input_thread_t *p_input;
383
384             /* Unlink current input */
385             p_input = p_playlist->p_input;
386             p_playlist->p_input = NULL;
387             PL_UNLOCK
388
389             /* Destroy input */
390             input_DestroyThread( p_input );
391             continue;
392         }
393         else if( p_playlist->p_input->b_die )
394         {
395             /* This input is dying, leave it alone */
396             ;
397         }
398         else if( p_playlist->p_input->b_error || p_playlist->p_input->b_eof )
399         {
400             input_StopThread( p_playlist->p_input );
401             PL_UNLOCK
402             continue;
403         }
404         else
405         {
406             p_playlist->p_input->b_eof = 1;
407         }
408
409         PL_UNLOCK
410
411         msleep( INTF_IDLE_SLEEP );
412     }
413
414     /* close all remaining sout */
415     while( ( p_obj = vlc_object_find( p_playlist,
416                                       VLC_OBJECT_SOUT, FIND_CHILD ) ) )
417     {
418         vlc_object_detach( p_obj );
419         vlc_object_release( p_obj );
420         sout_DeleteInstance( (sout_instance_t*)p_obj );
421     }
422
423     /* close all remaining vout */
424     while( ( p_obj = vlc_object_find( p_playlist,
425                                       VLC_OBJECT_VOUT, FIND_CHILD ) ) )
426     {
427         vlc_object_detach( p_obj );
428         vlc_object_release( p_obj );
429         vout_Destroy( (vout_thread_t *)p_obj );
430     }
431
432     while( p_playlist->i_sds )
433     {
434         playlist_ServicesDiscoveryRemove( p_playlist,
435                                           p_playlist->pp_sds[0]->p_sd->psz_module );
436     }
437
438     playlist_MLDump( p_playlist );
439
440     PL_LOCK;
441     /* Go through all items, and simply free everything without caring
442      * about the tree structure. Do not decref, it will be done by doing
443      * the same thing on the input items array */
444     FOREACH_ARRAY( playlist_item_t *p_del, p_playlist->all_items )
445         free( p_del->pp_children );
446         free( p_del );
447     FOREACH_END();
448     ARRAY_RESET( p_playlist->all_items );
449
450     FOREACH_ARRAY( input_item_t *p_del, p_playlist->input_items )
451         input_ItemClean( p_del );
452         free( p_del );
453     FOREACH_END();
454     ARRAY_RESET( p_playlist->input_items );
455
456     ARRAY_RESET( p_playlist->items );
457     ARRAY_RESET( p_playlist->current );
458
459     PL_UNLOCK;
460 }
461
462 /** Main loop for preparser queue */
463 void playlist_PreparseLoop( playlist_preparse_t *p_obj )
464 {
465     playlist_t *p_playlist = (playlist_t *)p_obj->p_parent;
466     input_item_t *p_current;
467     int i_activity;
468     uint32_t i_m, i_o;
469
470     while( !p_playlist->b_die )
471     {
472         vlc_mutex_lock( &p_obj->object_lock );
473         while( p_obj->i_waiting == 0 )
474         {
475             vlc_cond_wait( &p_obj->object_wait, &p_obj->object_lock );
476             if( p_playlist->b_die )
477             {
478                 vlc_mutex_unlock( &p_obj->object_lock );
479                 return;
480             }
481         }
482
483         p_current = p_obj->pp_waiting[0];
484         REMOVE_ELEM( p_obj->pp_waiting, p_obj->i_waiting, 0 );
485         vlc_mutex_unlock( &p_obj->object_lock );
486
487         PL_LOCK;
488         if( p_current )
489         {
490             if( !strncmp( p_current->psz_uri, "file:", 5 ) )
491             {
492                 stats_TimerStart( p_playlist, "Preparse run",
493                                   STATS_TIMER_PREPARSE );
494                 /* Do not preparse if it is already done (like by playing it) */
495                 if( !input_item_IsPreparsed( p_current ) )
496                 {
497                     PL_UNLOCK;
498                     input_Preparse( p_playlist, p_current );
499                     PL_LOCK;
500                 }
501                 stats_TimerStop( p_playlist, STATS_TIMER_PREPARSE );
502                 PL_UNLOCK;
503                 input_item_SetPreparsed( p_current, VLC_TRUE );
504                 var_SetInteger( p_playlist, "item-change", p_current->i_id );
505                 PL_LOCK;
506             }
507             /* If we haven't retrieved enough meta, add to secondary queue
508              * which will run the "meta fetchers".
509              * This only checks for meta, not for art
510              * \todo don't do this for things we won't get meta for, like vids
511              */
512             char *psz_arturl = input_item_GetArtURL( p_current );
513             char *psz_name = input_item_GetName( p_current );
514             if( !input_MetaSatisfied( p_playlist, p_current, &i_m, &i_o ) )
515             {
516                 preparse_item_t p;
517                 PL_DEBUG("need to fetch meta for %s", p_current->psz_name );
518                 p.p_item = p_current;
519                 p.b_fetch_art = VLC_FALSE;
520                 vlc_mutex_lock( &p_playlist->p_fetcher->object_lock );
521                 INSERT_ELEM( p_playlist->p_fetcher->p_waiting,
522                              p_playlist->p_fetcher->i_waiting,
523                              p_playlist->p_fetcher->i_waiting, p);
524                 vlc_cond_signal( &p_playlist->p_fetcher->object_wait );
525                 vlc_mutex_unlock( &p_playlist->p_fetcher->object_lock );
526             }
527             /* We already have all needed meta, but we need art right now */
528             else if( p_playlist->p_fetcher->i_art_policy == ALBUM_ART_ALL &&
529                         ( !psz_arturl || strncmp( psz_arturl, "file://", 7 ) ) )
530             {
531                 preparse_item_t p;
532                 PL_DEBUG("meta ok for %s, need to fetch art", psz_name );
533                 p.p_item = p_current;
534                 p.b_fetch_art = VLC_TRUE;
535                 vlc_mutex_lock( &p_playlist->p_fetcher->object_lock );
536                 INSERT_ELEM( p_playlist->p_fetcher->p_waiting,
537                              p_playlist->p_fetcher->i_waiting,
538                              p_playlist->p_fetcher->i_waiting, p);
539                 vlc_cond_signal( &p_playlist->p_fetcher->object_wait );
540                 vlc_mutex_unlock( &p_playlist->p_fetcher->object_lock );
541             }
542             else
543             {
544                 PL_DEBUG( "no fetch required for %s (art currently %s)",
545                           psz_name, psz_arturl );
546                 vlc_gc_decref( p_current );
547             }
548             free( psz_name );
549             free( psz_arturl );
550             PL_UNLOCK;
551         }
552         else
553             PL_UNLOCK;
554
555         vlc_mutex_lock( &p_obj->object_lock );
556         i_activity = var_GetInteger( p_playlist, "activity" );
557         if( i_activity < 0 ) i_activity = 0;
558         vlc_mutex_unlock( &p_obj->object_lock );
559         /* Sleep at least 1ms */
560         msleep( (i_activity+1) * 1000 );
561     }
562 }
563
564 /** Main loop for secondary preparser queue */
565 void playlist_FetcherLoop( playlist_fetcher_t *p_obj )
566 {
567     playlist_t *p_playlist = (playlist_t *)p_obj->p_parent;
568     vlc_bool_t b_fetch_art;
569     input_item_t *p_item;
570     int i_activity;
571
572     while( !p_playlist->b_die )
573     {
574         vlc_mutex_lock( &p_obj->object_lock );
575         while( p_obj->i_waiting == 0 )
576         {
577             vlc_cond_wait( &p_obj->object_wait, &p_obj->object_lock );
578             if( p_playlist->b_die )
579             {
580                 vlc_mutex_unlock( &p_obj->object_lock );
581                 return;
582             }
583         }
584
585         b_fetch_art = p_obj->p_waiting->b_fetch_art;
586         p_item = p_obj->p_waiting->p_item;
587         REMOVE_ELEM( p_obj->p_waiting, p_obj->i_waiting, 0 );
588         vlc_mutex_unlock( &p_obj->object_lock );
589         if( p_item )
590         {
591             if( !b_fetch_art )
592             {
593                 input_MetaFetch( p_playlist, p_item );
594                 var_SetInteger( p_playlist, "item-change", p_item->i_id );
595                 /*  Fetch right now */
596                 if( p_playlist->p_fetcher->i_art_policy == ALBUM_ART_ALL )
597                 {
598                     vlc_mutex_lock( &p_obj->object_lock );
599                     preparse_item_t p;
600                     p.p_item = p_item;
601                     p.b_fetch_art = VLC_TRUE;
602                     INSERT_ELEM( p_playlist->p_fetcher->p_waiting,
603                                  p_playlist->p_fetcher->i_waiting,
604                                  0, p );
605                     PL_DEBUG("meta fetched for %s, get art", p_item->psz_name);
606                     vlc_mutex_unlock( &p_obj->object_lock );
607                     continue;
608                 }
609                 else
610                     vlc_gc_decref( p_item );
611             }
612             else
613             {
614                 int i_ret;
615
616                 /* Check if it is not yet preparsed and if so wait for it (at most 0.5s)
617                  * (This can happen if we fetch art on play)
618                  * FIXME this doesn't work if we need to fetch meta before art ... */
619                 for( i_ret = 0; i_ret < 10 && !input_item_IsPreparsed( p_item ); i_ret++ )
620                 {
621                     vlc_bool_t b_break;
622                     PL_LOCK;
623                     b_break = ( !p_playlist->p_input || input_GetItem(p_playlist->p_input) != p_item  ||
624                                 p_playlist->p_input->b_die || p_playlist->p_input->b_eof || p_playlist->p_input->b_error );
625                     PL_UNLOCK;
626                     if( b_break )
627                         break;
628                     msleep( 50000 );
629                 }
630
631                 i_ret = input_ArtFind( p_playlist, p_item );
632                 if( i_ret == 1 )
633                 {
634                     PL_DEBUG("downloading art for %s", p_item->psz_name );
635                     if( input_DownloadAndCacheArt( p_playlist, p_item ) )
636                         input_item_SetArtNotFound( p_item, VLC_TRUE );
637                     else {
638                         input_item_SetArtFetched( p_item, VLC_TRUE );
639                         var_SetInteger( p_playlist, "item-change",
640                                         p_item->i_id );
641                     }
642                 }
643                 else if( i_ret == 0 ) /* Was in cache */
644                 {
645                     PL_DEBUG("found art for %s in cache", p_item->psz_name );
646                     input_item_SetArtFetched( p_item, VLC_TRUE );
647                     var_SetInteger( p_playlist, "item-change", p_item->i_id );
648                 }
649                 else
650                 {
651                     PL_DEBUG("art not found for %s", p_item->psz_name );
652                     input_item_SetArtNotFound( p_item, VLC_TRUE );
653                 }
654                 vlc_gc_decref( p_item );
655            }
656         }
657         vlc_mutex_lock( &p_obj->object_lock );
658         i_activity = var_GetInteger( p_playlist, "activity" );
659         if( i_activity < 0 ) i_activity = 0;
660         vlc_mutex_unlock( &p_obj->object_lock );
661         /* Sleep at least 1ms */
662         msleep( (i_activity+1) * 1000 );
663     }
664 }
665
666 static void VariablesInit( playlist_t *p_playlist )
667 {
668     vlc_value_t val;
669     /* These variables control updates */
670     var_Create( p_playlist, "intf-change", VLC_VAR_BOOL );
671     val.b_bool = VLC_TRUE;
672     var_Set( p_playlist, "intf-change", val );
673
674     var_Create( p_playlist, "item-change", VLC_VAR_INTEGER );
675     val.i_int = -1;
676     var_Set( p_playlist, "item-change", val );
677
678     var_Create( p_playlist, "item-deleted", VLC_VAR_INTEGER );
679     val.i_int = -1;
680     var_Set( p_playlist, "item-deleted", val );
681
682     var_Create( p_playlist, "item-append", VLC_VAR_ADDRESS );
683
684     var_Create( p_playlist, "playlist-current", VLC_VAR_INTEGER );
685     val.i_int = -1;
686     var_Set( p_playlist, "playlist-current", val );
687
688     var_Create( p_playlist, "intf-popupmenu", VLC_VAR_BOOL );
689
690     var_Create( p_playlist, "intf-show", VLC_VAR_BOOL );
691     val.b_bool = VLC_TRUE;
692     var_Set( p_playlist, "intf-show", val );
693
694     var_Create( p_playlist, "activity", VLC_VAR_INTEGER );
695     var_SetInteger( p_playlist, "activity", 0 );
696
697     /* Variables to control playback */
698     var_CreateGetBool( p_playlist, "play-and-stop" );
699     var_CreateGetBool( p_playlist, "play-and-exit" );
700     var_CreateGetBool( p_playlist, "random" );
701     var_CreateGetBool( p_playlist, "repeat" );
702     var_CreateGetBool( p_playlist, "loop" );
703
704     var_AddCallback( p_playlist, "random", RandomCallback, NULL );
705 }