5e0cecd74d960f0c38df670d51fbbfa71fedaf52
[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 #ifdef HAVE_CONFIG_H
26 # include "config.h"
27 #endif
28
29 #include <vlc/vlc.h>
30 #include <vlc_vout.h>
31 #include <vlc_sout.h>
32 #include <vlc_playlist.h>
33 #include <vlc_interface.h>
34 #include "playlist_internal.h"
35 #include "stream_output/stream_output.h" /* sout_DeleteInstance */
36
37 /*****************************************************************************
38  * Local prototypes
39  *****************************************************************************/
40 static void VariablesInit( playlist_t *p_playlist );
41 static void playlist_Destructor( vlc_object_t * p_this );
42
43 static int RandomCallback( vlc_object_t *p_this, char const *psz_cmd,
44                            vlc_value_t oldval, vlc_value_t newval, void *a )
45 {
46     (void)psz_cmd; (void)oldval; (void)newval; (void)a;
47
48     ((playlist_t*)p_this)->b_reset_currently_playing = true;
49     playlist_Signal( ((playlist_t*)p_this) );
50     return VLC_SUCCESS;
51 }
52
53 /**
54  * Create playlist
55  *
56  * Create a playlist structure.
57  * \param p_parent the vlc object that is to be the parent of this playlist
58  * \return a pointer to the created playlist, or NULL on error
59  */
60 playlist_t * playlist_Create( vlc_object_t *p_parent )
61 {
62     static const char playlist_name[] = "playlist";
63     playlist_t *p_playlist;
64     bool b_save;
65
66     /* Allocate structure */
67     p_playlist = vlc_custom_create( p_parent, sizeof( *p_playlist ),
68                                     VLC_OBJECT_PLAYLIST, playlist_name );
69     if( !p_playlist )
70     {
71         msg_Err( p_parent, "out of memory" );
72         return NULL;
73     }
74
75     TAB_INIT( p_playlist->i_sds, p_playlist->pp_sds );
76
77     p_parent->p_libvlc->p_playlist = p_playlist;
78
79     VariablesInit( p_playlist );
80
81     /* Initialise data structures */
82     vlc_mutex_init( &p_playlist->gc_lock );
83     p_playlist->i_last_playlist_id = 0;
84     p_playlist->p_input = NULL;
85
86     p_playlist->gc_date = 0;
87     p_playlist->b_cant_sleep = false;
88
89     ARRAY_INIT( p_playlist->items );
90     ARRAY_INIT( p_playlist->all_items );
91     ARRAY_INIT( p_playlist->current );
92
93     p_playlist->i_current_index = 0;
94     p_playlist->b_reset_currently_playing = true;
95     p_playlist->last_rebuild_date = 0;
96
97     p_playlist->b_tree = var_CreateGetBool( p_playlist, "playlist-tree" );
98
99     p_playlist->b_doing_ml = false;
100
101     p_playlist->b_auto_preparse =
102                         var_CreateGetBool( p_playlist, "auto-preparse" ) ;
103
104     p_playlist->p_root_category = playlist_NodeCreate( p_playlist, NULL, NULL,
105                                     0, NULL );
106     p_playlist->p_root_onelevel = playlist_NodeCreate( p_playlist, NULL, NULL,
107                                     0, p_playlist->p_root_category->p_input );
108
109     if( !p_playlist->p_root_category || !p_playlist->p_root_onelevel )
110         return NULL;
111
112     /* Create playlist and media library */
113     playlist_NodesPairCreate( p_playlist, _( "Playlist" ),
114                             &p_playlist->p_local_category,
115                             &p_playlist->p_local_onelevel, false );
116
117     p_playlist->p_local_category->i_flags |= PLAYLIST_RO_FLAG;
118     p_playlist->p_local_onelevel->i_flags |= PLAYLIST_RO_FLAG;
119
120     if( !p_playlist->p_local_category || !p_playlist->p_local_onelevel ||
121         !p_playlist->p_local_category->p_input ||
122         !p_playlist->p_local_onelevel->p_input )
123         return NULL;
124
125     if( config_GetInt( p_playlist, "media-library") )
126     {
127         playlist_NodesPairCreate( p_playlist, _( "Media Library" ),
128                             &p_playlist->p_ml_category,
129                             &p_playlist->p_ml_onelevel, false );
130
131         if(!p_playlist->p_ml_category || !p_playlist->p_ml_onelevel)
132             return NULL;
133
134         p_playlist->p_ml_category->i_flags |= PLAYLIST_RO_FLAG;
135         p_playlist->p_ml_onelevel->i_flags |= PLAYLIST_RO_FLAG;
136     }
137     else
138     {
139         p_playlist->p_ml_category = p_playlist->p_ml_onelevel = NULL;
140     }
141
142     /* Initial status */
143     p_playlist->status.p_item = NULL;
144     p_playlist->status.p_node = p_playlist->p_local_onelevel;
145     p_playlist->request.b_request = false;
146     p_playlist->status.i_status = PLAYLIST_STOPPED;
147
148     p_playlist->i_sort = SORT_ID;
149     p_playlist->i_order = ORDER_NORMAL;
150
151
152     b_save = p_playlist->b_auto_preparse;
153     p_playlist->b_auto_preparse = false;
154     playlist_MLLoad( p_playlist );
155     p_playlist->b_auto_preparse = true;
156
157     vlc_object_set_destructor( p_playlist, playlist_Destructor );
158
159     return p_playlist;
160 }
161
162 /**
163  * Destroy playlist
164  *
165  * Destroy a playlist structure.
166  * \param p_playlist the playlist object
167  * \return nothing
168  */
169 void playlist_Destroy( playlist_t *p_playlist )
170 {
171     /* XXX: should go in the playlist destructor */
172     var_Destroy( p_playlist, "intf-change" );
173     var_Destroy( p_playlist, "item-change" );
174     var_Destroy( p_playlist, "playlist-current" );
175     var_Destroy( p_playlist, "intf-popupmenu" );
176     var_Destroy( p_playlist, "intf-show" );
177     var_Destroy( p_playlist, "play-and-stop" );
178     var_Destroy( p_playlist, "play-and-exit" );
179     var_Destroy( p_playlist, "random" );
180     var_Destroy( p_playlist, "repeat" );
181     var_Destroy( p_playlist, "loop" );
182     var_Destroy( p_playlist, "activity" );
183
184     vlc_object_release( p_playlist );
185 }
186
187 static void playlist_Destructor( vlc_object_t * p_this )
188 {
189     playlist_t * p_playlist = (playlist_t *)p_this;
190
191     // Kill preparser
192     if( p_playlist->p_preparse )
193     {
194         vlc_object_release( p_playlist->p_preparse );
195     }
196
197     // Kill meta fetcher
198     if( p_playlist->p_fetcher )
199     {
200         vlc_object_release( p_playlist->p_fetcher );
201     }
202 }
203
204 /* Destroy remaining objects */
205 static void ObjectGarbageCollector( playlist_t *p_playlist, bool b_force )
206 {
207     vlc_object_t *p_obj;
208
209     if( !b_force )
210     {
211         if( mdate() - p_playlist->gc_date < 1000000 )
212         {
213             p_playlist->b_cant_sleep = true;
214             return;
215         }
216         else if( p_playlist->gc_date == 0 )
217             return;
218     }
219
220     vlc_mutex_lock( &p_playlist->gc_lock );
221     while( ( p_obj = vlc_object_find( p_playlist->p_libvlc, VLC_OBJECT_VOUT,
222                                                   FIND_CHILD ) ) )
223     {
224         if( p_obj->p_parent != VLC_OBJECT(p_playlist->p_libvlc) )
225         {
226             vlc_object_release( p_obj );
227             break;
228         }
229         msg_Dbg( p_playlist, "garbage collector destroying 1 vout" );
230         vlc_object_detach( p_obj );
231         vlc_object_release( p_obj );
232         vout_Destroy( (vout_thread_t *)p_obj );
233     }
234 #ifdef ENABLE_SOUT
235     while( ( p_obj = vlc_object_find( p_playlist, VLC_OBJECT_SOUT,
236                                                   FIND_CHILD ) ) )
237     {
238         if( p_obj->p_parent != VLC_OBJECT(p_playlist) )
239         {
240             vlc_object_release( p_obj );
241             break;
242         }
243         msg_Dbg( p_playlist, "garbage collector destroying 1 sout" );
244         vlc_object_detach( p_obj );
245         vlc_object_release( p_obj );
246         sout_DeleteInstance( (sout_instance_t*)p_obj );
247     }
248 #endif
249     p_playlist->b_cant_sleep = false;
250     vlc_mutex_unlock( &p_playlist->gc_lock );
251 }
252
253 /**
254  * Main loop
255  *
256  * Main loop for the playlist
257  * \param p_playlist the playlist object
258  * \return nothing
259  */
260 void playlist_MainLoop( playlist_t *p_playlist )
261 {
262     playlist_item_t *p_item = NULL;
263     bool b_playexit = var_GetBool( p_playlist, "play-and-exit" );
264     PL_LOCK;
265
266     if( p_playlist->b_reset_currently_playing &&
267         mdate() - p_playlist->last_rebuild_date > 30000 ) // 30 ms
268     {
269         ResetCurrentlyPlaying( p_playlist, var_GetBool( p_playlist, "random" ),
270                              p_playlist->status.p_item );
271         p_playlist->last_rebuild_date = mdate();
272     }
273
274 check_input:
275     /* If there is an input, check that it doesn't need to die. */
276     if( p_playlist->p_input )
277     {
278         if( p_playlist->request.b_request && !p_playlist->p_input->b_die )
279         {
280             PL_DEBUG( "incoming request - stopping current input" );
281             input_StopThread( p_playlist->p_input );
282         }
283
284         /* This input is dead. Remove it ! */
285         if( p_playlist->p_input->b_dead )
286         {
287             int i_activity;
288             input_thread_t *p_input;
289             PL_DEBUG( "dead input" );
290
291             p_input = p_playlist->p_input;
292             p_playlist->p_input = NULL;
293
294             /* Release the playlist lock, because we may get stuck
295              * in vlc_object_release() for some time. */
296             PL_UNLOCK;
297
298             /* Destroy input */
299             vlc_object_release( p_input );
300
301             PL_LOCK;
302
303             p_playlist->gc_date = mdate();
304             p_playlist->b_cant_sleep = true;
305
306             if( p_playlist->status.p_item->i_flags
307                 & PLAYLIST_REMOVE_FLAG )
308             {
309                  PL_DEBUG( "%s was marked for deletion, deleting",
310                                  PLI_NAME( p_playlist->status.p_item  ) );
311                  playlist_ItemDelete( p_playlist->status.p_item );
312                  if( p_playlist->request.p_item == p_playlist->status.p_item )
313                      p_playlist->request.p_item = NULL;
314                  p_playlist->status.p_item = NULL;
315             }
316
317             i_activity= var_GetInteger( p_playlist, "activity" );
318             var_SetInteger( p_playlist, "activity", i_activity -
319                             DEFAULT_INPUT_ACTIVITY );
320             goto check_input;
321         }
322         /* This input is dying, let it do */
323         else if( p_playlist->p_input->b_die )
324         {
325             PL_DEBUG( "dying input" );
326             PL_UNLOCK;
327             msleep( INTF_IDLE_SLEEP );
328             PL_LOCK;
329             goto check_input;
330         }
331         /* This input has finished, ask it to die ! */
332         else if( p_playlist->p_input->b_error
333                   || p_playlist->p_input->b_eof )
334         {
335             PL_DEBUG( "finished input" );
336             input_StopThread( p_playlist->p_input );
337             /* No need to wait here, we'll wait in the p_input->b_die case */
338             goto check_input;
339         }
340         else if( p_playlist->p_input->i_state != INIT_S )
341         {
342             PL_UNLOCK;
343             ObjectGarbageCollector( p_playlist, false );
344             PL_LOCK;
345         }
346     }
347     else
348     {
349         /* No input. Several cases
350          *  - No request, running status -> start new item
351          *  - No request, stopped status -> collect garbage
352          *  - Request, running requested -> start new item
353          *  - Request, stopped requested -> collect garbage
354         */
355         int i_status = p_playlist->request.b_request ?
356             p_playlist->request.i_status : p_playlist->status.i_status;
357         if( i_status != PLAYLIST_STOPPED )
358         {
359             msg_Dbg( p_playlist, "starting new item" );
360             p_item = playlist_NextItem( p_playlist );
361
362             if( p_item == NULL )
363             {
364                 msg_Dbg( p_playlist, "nothing to play" );
365                 p_playlist->status.i_status = PLAYLIST_STOPPED;
366                 PL_UNLOCK;
367
368                 if( b_playexit == true )
369                 {
370                     msg_Info( p_playlist, "end of playlist, exiting" );
371                     vlc_object_kill( p_playlist->p_libvlc );
372                 }
373                 ObjectGarbageCollector( p_playlist, true );
374                 return;
375              }
376              playlist_PlayItem( p_playlist, p_item );
377          }
378          else
379          {
380             const bool b_gc_forced = p_playlist->status.i_status != PLAYLIST_STOPPED;
381
382             p_playlist->status.i_status = PLAYLIST_STOPPED;
383             if( p_playlist->status.p_item &&
384                 p_playlist->status.p_item->i_flags & PLAYLIST_REMOVE_FLAG )
385             {
386                 PL_DEBUG( "deleting item marked for deletion" );
387                 playlist_ItemDelete( p_playlist->status.p_item );
388                 p_playlist->status.p_item = NULL;
389             }
390
391             /* Collect garbage */
392             PL_UNLOCK;
393             ObjectGarbageCollector( p_playlist, b_gc_forced );
394             PL_LOCK;
395         }
396     }
397     PL_UNLOCK;
398 }
399
400 /**
401  * Last loop
402  *
403  * The playlist is dying so do the last loop
404  * \param p_playlist the playlist object
405  * \return nothing
406 */
407 void playlist_LastLoop( playlist_t *p_playlist )
408 {
409     vlc_object_t *p_obj;
410
411     /* If there is an input, kill it */
412     while( 1 )
413     {
414         PL_LOCK;
415         if( p_playlist->p_input == NULL )
416         {
417             PL_UNLOCK;
418             break;
419         }
420
421         if( p_playlist->p_input->b_dead )
422         {
423             input_thread_t *p_input;
424
425             /* Unlink current input */
426             p_input = p_playlist->p_input;
427             p_playlist->p_input = NULL;
428             PL_UNLOCK;
429
430             /* Destroy input */
431             vlc_object_release( p_input );
432             continue;
433         }
434         else if( p_playlist->p_input->b_die )
435         {
436             /* This input is dying, leave it alone */
437             ;
438         }
439         else if( p_playlist->p_input->b_error || p_playlist->p_input->b_eof )
440         {
441             input_StopThread( p_playlist->p_input );
442             PL_UNLOCK;
443             continue;
444         }
445         else
446         {
447             p_playlist->p_input->b_eof = 1;
448         }
449         PL_UNLOCK;
450
451         msleep( INTF_IDLE_SLEEP );
452     }
453
454 #ifdef ENABLE_SOUT
455     /* close all remaining sout */
456     while( ( p_obj = vlc_object_find( p_playlist,
457                                       VLC_OBJECT_SOUT, FIND_CHILD ) ) )
458     {
459         vlc_object_detach( p_obj );
460         vlc_object_release( p_obj );
461         sout_DeleteInstance( (sout_instance_t*)p_obj );
462     }
463 #endif
464
465     /* close all remaining vout */
466     while( ( p_obj = vlc_object_find( p_playlist,
467                                       VLC_OBJECT_VOUT, FIND_CHILD ) ) )
468     {
469         vlc_object_detach( p_obj );
470         vlc_object_release( p_obj );
471         vout_Destroy( (vout_thread_t *)p_obj );
472     }
473
474     while( p_playlist->i_sds )
475     {
476         playlist_ServicesDiscoveryRemove( p_playlist,
477                                           p_playlist->pp_sds[0]->p_sd->psz_module );
478     }
479
480     playlist_MLDump( p_playlist );
481
482     PL_LOCK;
483     FOREACH_ARRAY( playlist_item_t *p_del, p_playlist->all_items )
484         free( p_del->pp_children );
485         vlc_gc_decref( p_del->p_input );
486         free( p_del );
487     FOREACH_END();
488     ARRAY_RESET( p_playlist->all_items );
489
490     ARRAY_RESET( p_playlist->items );
491     ARRAY_RESET( p_playlist->current );
492
493     PL_UNLOCK;
494 }
495
496 /**
497  * Preparse loop
498  *
499  * Main loop for preparser queue
500  * \param p_obj items to preparse
501  * \return nothing
502  */
503 void playlist_PreparseLoop( playlist_preparse_t *p_obj )
504 {
505     playlist_t *p_playlist = (playlist_t *)p_obj->p_parent;
506     input_item_t *p_current;
507     int i_activity;
508
509     while( !p_playlist->b_die )
510     {
511         vlc_object_lock( p_obj );
512         while( p_obj->i_waiting == 0 )
513         {
514             if( vlc_object_wait( p_obj ) || p_playlist->b_die )
515             {
516                 vlc_object_unlock( p_obj );
517                 return;
518             }
519         }
520
521         p_current = p_obj->pp_waiting[0];
522         REMOVE_ELEM( p_obj->pp_waiting, p_obj->i_waiting, 0 );
523         vlc_object_unlock( p_obj );
524
525         PL_LOCK;
526         if( p_current )
527         {
528             if( p_current->i_type == ITEM_TYPE_FILE )
529             {
530                 stats_TimerStart( p_playlist, "Preparse run",
531                                   STATS_TIMER_PREPARSE );
532                 /* Do not preparse if it is already done (like by playing it) */
533                 if( !input_item_IsPreparsed( p_current ) )
534                 {
535                     PL_UNLOCK;
536                     input_Preparse( p_playlist, p_current );
537                     PL_LOCK;
538                 }
539                 stats_TimerStop( p_playlist, STATS_TIMER_PREPARSE );
540                 PL_UNLOCK;
541                 input_item_SetPreparsed( p_current, true );
542                 var_SetInteger( p_playlist, "item-change", p_current->i_id );
543                 PL_LOCK;
544             }
545             /* If we haven't retrieved enough meta, add to secondary queue
546              * which will run the "meta fetchers".
547              * This only checks for meta, not for art
548              * \todo don't do this for things we won't get meta for, like vids
549              */
550             char *psz_arturl = input_item_GetArtURL( p_current );
551             char *psz_name = input_item_GetName( p_current );
552             if( p_playlist->p_fetcher->i_art_policy == ALBUM_ART_ALL &&
553                         ( !psz_arturl || strncmp( psz_arturl, "file://", 7 ) ) )
554             {
555                 PL_DEBUG("meta ok for %s, need to fetch art", psz_name );
556                 vlc_object_lock( p_playlist->p_fetcher );
557                 INSERT_ELEM( p_playlist->p_fetcher->pp_waiting,
558                              p_playlist->p_fetcher->i_waiting,
559                              p_playlist->p_fetcher->i_waiting, p_current);
560                 vlc_object_signal_unlocked( p_playlist->p_fetcher );
561                 vlc_object_unlock( p_playlist->p_fetcher );
562             }
563             else
564             {
565                 PL_DEBUG( "no fetch required for %s (art currently %s)",
566                           psz_name, psz_arturl );
567                 vlc_gc_decref( p_current );
568             }
569             free( psz_name );
570             free( psz_arturl );
571             PL_UNLOCK;
572         }
573         else
574             PL_UNLOCK;
575
576         vlc_object_lock( p_obj );
577         i_activity = var_GetInteger( p_playlist, "activity" );
578         if( i_activity < 0 ) i_activity = 0;
579         vlc_object_unlock( p_obj );
580         /* Sleep at least 1ms */
581         msleep( (i_activity+1) * 1000 );
582     }
583 }
584
585 /**
586  * Fetcher loop
587  *
588  * Main loop for secondary preparser queue
589  * \param p_obj items to preparse
590  * \return nothing
591  */
592 void playlist_FetcherLoop( playlist_fetcher_t *p_obj )
593 {
594     playlist_t *p_playlist = (playlist_t *)p_obj->p_parent;
595     input_item_t *p_item;
596     int i_activity;
597
598     while( !p_playlist->b_die )
599     {
600         vlc_mutex_lock( &p_obj->object_lock );
601         while( p_obj->i_waiting == 0 )
602         {
603             vlc_cond_wait( &p_obj->object_wait, &p_obj->object_lock );
604             if( p_playlist->b_die )
605             {
606                 vlc_mutex_unlock( &p_obj->object_lock );
607                 return;
608             }
609         }
610
611         p_item = p_obj->pp_waiting[0];
612         REMOVE_ELEM( p_obj->pp_waiting, p_obj->i_waiting, 0 );
613         vlc_mutex_unlock( &p_obj->object_lock );
614         if( p_item )
615         {
616             int i_ret;
617
618             /* Check if it is not yet preparsed and if so wait for it (at most 0.5s)
619              * (This can happen if we fetch art on play)
620              * FIXME this doesn't work if we need to fetch meta before art ... */
621             for( i_ret = 0; i_ret < 10 && !input_item_IsPreparsed( p_item ); i_ret++ )
622             {
623                 bool b_break;
624                 PL_LOCK;
625                 b_break = ( !p_playlist->p_input || input_GetItem(p_playlist->p_input) != p_item  ||
626                             p_playlist->p_input->b_die || p_playlist->p_input->b_eof || p_playlist->p_input->b_error );
627                 PL_UNLOCK;
628                 if( b_break )
629                     break;
630                 msleep( 50000 );
631             }
632
633             i_ret = input_ArtFind( p_playlist, p_item );
634             if( i_ret == 1 )
635             {
636                 PL_DEBUG( "downloading art for %s", p_item->psz_name );
637                 if( input_DownloadAndCacheArt( p_playlist, p_item ) )
638                     input_item_SetArtNotFound( p_item, true );
639                 else {
640                     input_item_SetArtFetched( p_item, true );
641                     var_SetInteger( p_playlist, "item-change",
642                                     p_item->i_id );
643                 }
644             }
645             else if( i_ret == 0 ) /* Was in cache */
646             {
647                 PL_DEBUG( "found art for %s in cache", p_item->psz_name );
648                 input_item_SetArtFetched( p_item, true );
649                 var_SetInteger( p_playlist, "item-change", p_item->i_id );
650             }
651             else
652             {
653                 PL_DEBUG( "art not found for %s", p_item->psz_name );
654                 input_item_SetArtNotFound( p_item, true );
655             }
656             vlc_gc_decref( p_item );
657         }
658         vlc_object_lock( p_obj );
659         i_activity = var_GetInteger( p_playlist, "activity" );
660         if( i_activity < 0 ) i_activity = 0;
661         vlc_object_unlock( p_obj );
662         /* Sleep at least 1ms */
663         msleep( (i_activity+1) * 1000 );
664     }
665 }
666
667 static void VariablesInit( playlist_t *p_playlist )
668 {
669     vlc_value_t val;
670     /* These variables control updates */
671     var_Create( p_playlist, "intf-change", VLC_VAR_BOOL );
672     val.b_bool = true;
673     var_Set( p_playlist, "intf-change", val );
674
675     var_Create( p_playlist, "item-change", VLC_VAR_INTEGER );
676     val.i_int = -1;
677     var_Set( p_playlist, "item-change", val );
678
679     var_Create( p_playlist, "item-deleted", VLC_VAR_INTEGER );
680     val.i_int = -1;
681     var_Set( p_playlist, "item-deleted", val );
682
683     var_Create( p_playlist, "item-append", VLC_VAR_ADDRESS );
684
685     var_Create( p_playlist, "playlist-current", VLC_VAR_INTEGER );
686     val.i_int = -1;
687     var_Set( p_playlist, "playlist-current", val );
688
689     var_Create( p_playlist, "intf-popupmenu", VLC_VAR_BOOL );
690
691     var_Create( p_playlist, "intf-show", VLC_VAR_BOOL );
692     val.b_bool = true;
693     var_Set( p_playlist, "intf-show", val );
694
695     var_Create( p_playlist, "activity", VLC_VAR_INTEGER );
696     var_SetInteger( p_playlist, "activity", 0 );
697
698     /* Variables to control playback */
699     var_CreateGetBool( p_playlist, "play-and-stop" );
700     var_CreateGetBool( p_playlist, "play-and-exit" );
701     var_CreateGetBool( p_playlist, "random" );
702     var_CreateGetBool( p_playlist, "repeat" );
703     var_CreateGetBool( p_playlist, "loop" );
704
705     var_AddCallback( p_playlist, "random", RandomCallback, NULL );
706 }