git.sesse.net Git - vlc/blob - 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  *          Clément 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, &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         if( p_playlist->request.i_status != PLAYLIST_STOPPED )
 356         {
 357             msg_Dbg( p_playlist, "starting new item" );
 358             p_item = playlist_NextItem( p_playlist );
 359
 360             if( p_item == NULL )
 361             {
 362                 msg_Dbg( p_playlist, "nothing to play" );
 363                 p_playlist->status.i_status = PLAYLIST_STOPPED;
 364                 PL_UNLOCK;
 365
 366                 if( b_playexit == true )
 367                 {
 368                     msg_Info( p_playlist, "end of playlist, exiting" );
 369                     vlc_object_kill( p_playlist->p_libvlc );
 370                 }
 371                 ObjectGarbageCollector( p_playlist, true );
 372                 return;
 373              }
 374              playlist_PlayItem( p_playlist, p_item );
 375          }
 376          else
 377          {
 378             const bool b_gc_forced = p_playlist->status.i_status != PLAYLIST_STOPPED;
 379
 380             p_playlist->status.i_status = PLAYLIST_STOPPED;
 381             if( p_playlist->status.p_item &&
 382                 p_playlist->status.p_item->i_flags & PLAYLIST_REMOVE_FLAG )
 383             {
 384                 PL_DEBUG( "deleting item marked for deletion" );
 385                 playlist_ItemDelete( p_playlist->status.p_item );
 386                 p_playlist->status.p_item = NULL;
 387             }
 388
 389             /* Collect garbage */
 390             PL_UNLOCK;
 391             ObjectGarbageCollector( p_playlist, b_gc_forced );
 392             PL_LOCK;
 393         }
 394     }
 395     PL_UNLOCK;
 396 }
 397
 398 /**
 399  * Last loop
 400  *
 401  * The playlist is dying so do the last loop
 402  * \param p_playlist the playlist object
 403  * \return nothing
 404 */
 405 void playlist_LastLoop( playlist_t *p_playlist )
 406 {
 407     vlc_object_t *p_obj;
 408
 409     /* If there is an input, kill it */
 410     while( 1 )
 411     {
 412         PL_LOCK;
 413         if( p_playlist->p_input == NULL )
 414         {
 415             PL_UNLOCK;
 416             break;
 417         }
 418
 419         if( p_playlist->p_input->b_dead )
 420         {
 421             input_thread_t *p_input;
 422
 423             /* Unlink current input */
 424             p_input = p_playlist->p_input;
 425             p_playlist->p_input = NULL;
 426             PL_UNLOCK;
 427
 428             /* Destroy input */
 429             vlc_object_release( p_input );
 430             continue;
 431         }
 432         else if( p_playlist->p_input->b_die )
 433         {
 434             /* This input is dying, leave it alone */
 435             ;
 436         }
 437         else if( p_playlist->p_input->b_error || p_playlist->p_input->b_eof )
 438         {
 439             input_StopThread( p_playlist->p_input );
 440             PL_UNLOCK;
 441             continue;
 442         }
 443         else
 444         {
 445             p_playlist->p_input->b_eof = 1;
 446         }
 447         PL_UNLOCK;
 448
 449         msleep( INTF_IDLE_SLEEP );
 450     }
 451
 452 #ifdef ENABLE_SOUT
 453     /* close all remaining sout */
 454     while( ( p_obj = vlc_object_find( p_playlist,
 455                                       VLC_OBJECT_SOUT, FIND_CHILD ) ) )
 456     {
 457         vlc_object_detach( p_obj );
 458         vlc_object_release( p_obj );
 459         sout_DeleteInstance( (sout_instance_t*)p_obj );
 460     }
 461 #endif
 462
 463     /* close all remaining vout */
 464     while( ( p_obj = vlc_object_find( p_playlist,
 465                                       VLC_OBJECT_VOUT, FIND_CHILD ) ) )
 466     {
 467         vlc_object_detach( p_obj );
 468         vlc_object_release( p_obj );
 469         vout_Destroy( (vout_thread_t *)p_obj );
 470     }
 471
 472     while( p_playlist->i_sds )
 473     {
 474         playlist_ServicesDiscoveryRemove( p_playlist,
 475                                           p_playlist->pp_sds[0]->p_sd->psz_module );
 476     }
 477
 478     playlist_MLDump( p_playlist );
 479
 480     PL_LOCK;
 481     FOREACH_ARRAY( playlist_item_t *p_del, p_playlist->all_items )
 482         free( p_del->pp_children );
 483         vlc_gc_decref( p_del->p_input );
 484         free( p_del );
 485     FOREACH_END();
 486     ARRAY_RESET( p_playlist->all_items );
 487
 488     ARRAY_RESET( p_playlist->items );
 489     ARRAY_RESET( p_playlist->current );
 490
 491     PL_UNLOCK;
 492 }
 493
 494 /**
 495  * Preparse loop
 496  *
 497  * Main loop for preparser queue
 498  * \param p_obj items to preparse
 499  * \return nothing
 500  */
 501 void playlist_PreparseLoop( playlist_preparse_t *p_obj )
 502 {
 503     playlist_t *p_playlist = (playlist_t *)p_obj->p_parent;
 504     input_item_t *p_current;
 505     int i_activity;
 506
 507     while( !p_playlist->b_die )
 508     {
 509         vlc_object_lock( p_obj );
 510         while( p_obj->i_waiting == 0 )
 511         {
 512             if( vlc_object_wait( p_obj ) || p_playlist->b_die )
 513             {
 514                 vlc_object_unlock( p_obj );
 515                 return;
 516             }
 517         }
 518
 519         p_current = p_obj->pp_waiting[0];
 520         REMOVE_ELEM( p_obj->pp_waiting, p_obj->i_waiting, 0 );
 521         vlc_object_unlock( p_obj );
 522
 523         PL_LOCK;
 524         if( p_current )
 525         {
 526             if( p_current->i_type == ITEM_TYPE_FILE )
 527             {
 528                 stats_TimerStart( p_playlist, "Preparse run",
 529                                   STATS_TIMER_PREPARSE );
 530                 /* Do not preparse if it is already done (like by playing it) */
 531                 if( !input_item_IsPreparsed( p_current ) )
 532                 {
 533                     PL_UNLOCK;
 534                     input_Preparse( p_playlist, p_current );
 535                     PL_LOCK;
 536                 }
 537                 stats_TimerStop( p_playlist, STATS_TIMER_PREPARSE );
 538                 PL_UNLOCK;
 539                 input_item_SetPreparsed( p_current, true );
 540                 var_SetInteger( p_playlist, "item-change", p_current->i_id );
 541                 PL_LOCK;
 542             }
 543             /* If we haven't retrieved enough meta, add to secondary queue
 544              * which will run the "meta fetchers".
 545              * This only checks for meta, not for art
 546              * \todo don't do this for things we won't get meta for, like vids
 547              */
 548             char *psz_arturl = input_item_GetArtURL( p_current );
 549             char *psz_name = input_item_GetName( p_current );
 550             if( p_playlist->p_fetcher->i_art_policy == ALBUM_ART_ALL &&
 551                         ( !psz_arturl || strncmp( psz_arturl, "file://", 7 ) ) )
 552             {
 553                 PL_DEBUG("meta ok for %s, need to fetch art", psz_name );
 554                 vlc_object_lock( p_playlist->p_fetcher );
 555                 INSERT_ELEM( p_playlist->p_fetcher->pp_waiting,
 556                              p_playlist->p_fetcher->i_waiting,
 557                              p_playlist->p_fetcher->i_waiting, p_current);
 558                 vlc_object_signal_unlocked( p_playlist->p_fetcher );
 559                 vlc_object_unlock( p_playlist->p_fetcher );
 560             }
 561             else
 562             {
 563                 PL_DEBUG( "no fetch required for %s (art currently %s)",
 564                           psz_name, psz_arturl );
 565                 vlc_gc_decref( p_current );
 566             }
 567             free( psz_name );
 568             free( psz_arturl );
 569             PL_UNLOCK;
 570         }
 571         else
 572             PL_UNLOCK;
 573
 574         vlc_object_lock( p_obj );
 575         i_activity = var_GetInteger( p_playlist, "activity" );
 576         if( i_activity < 0 ) i_activity = 0;
 577         vlc_object_unlock( p_obj );
 578         /* Sleep at least 1ms */
 579         msleep( (i_activity+1) * 1000 );
 580     }
 581 }
 582
 583 /**
 584  * Fetcher loop
 585  *
 586  * Main loop for secondary preparser queue
 587  * \param p_obj items to preparse
 588  * \return nothing
 589  */
 590 void playlist_FetcherLoop( playlist_fetcher_t *p_obj )
 591 {
 592     playlist_t *p_playlist = (playlist_t *)p_obj->p_parent;
 593     input_item_t *p_item;
 594     int i_activity;
 595
 596     while( !p_playlist->b_die )
 597     {
 598         vlc_mutex_lock( &p_obj->object_lock );
 599         while( p_obj->i_waiting == 0 )
 600         {
 601             vlc_cond_wait( &p_obj->object_wait, &p_obj->object_lock );
 602             if( p_playlist->b_die )
 603             {
 604                 vlc_mutex_unlock( &p_obj->object_lock );
 605                 return;
 606             }
 607         }
 608
 609         p_item = p_obj->pp_waiting[0];
 610         REMOVE_ELEM( p_obj->pp_waiting, p_obj->i_waiting, 0 );
 611         vlc_mutex_unlock( &p_obj->object_lock );
 612         if( p_item )
 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                 bool 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, true );
 637                 else {
 638                     input_item_SetArtFetched( p_item, 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, 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, true );
 653             }
 654             vlc_gc_decref( p_item );
 655         }
 656         vlc_object_lock( p_obj );
 657         i_activity = var_GetInteger( p_playlist, "activity" );
 658         if( i_activity < 0 ) i_activity = 0;
 659         vlc_object_unlock( p_obj );
 660         /* Sleep at least 1ms */
 661         msleep( (i_activity+1) * 1000 );
 662     }
 663 }
 664
 665 static void VariablesInit( playlist_t *p_playlist )
 666 {
 667     vlc_value_t val;
 668     /* These variables control updates */
 669     var_Create( p_playlist, "intf-change", VLC_VAR_BOOL );
 670     val.b_bool = true;
 671     var_Set( p_playlist, "intf-change", val );
 672
 673     var_Create( p_playlist, "item-change", VLC_VAR_INTEGER );
 674     val.i_int = -1;
 675     var_Set( p_playlist, "item-change", val );
 676
 677     var_Create( p_playlist, "item-deleted", VLC_VAR_INTEGER );
 678     val.i_int = -1;
 679     var_Set( p_playlist, "item-deleted", val );
 680
 681     var_Create( p_playlist, "item-append", VLC_VAR_ADDRESS );
 682
 683     var_Create( p_playlist, "playlist-current", VLC_VAR_INTEGER );
 684     val.i_int = -1;
 685     var_Set( p_playlist, "playlist-current", val );
 686
 687     var_Create( p_playlist, "intf-popupmenu", VLC_VAR_BOOL );
 688
 689     var_Create( p_playlist, "intf-show", VLC_VAR_BOOL );
 690     val.b_bool = true;
 691     var_Set( p_playlist, "intf-show", val );
 692
 693     var_Create( p_playlist, "activity", VLC_VAR_INTEGER );
 694     var_SetInteger( p_playlist, "activity", 0 );
 695
 696     /* Variables to control playback */
 697     var_CreateGetBool( p_playlist, "play-and-stop" );
 698     var_CreateGetBool( p_playlist, "play-and-exit" );
 699     var_CreateGetBool( p_playlist, "random" );
 700     var_CreateGetBool( p_playlist, "repeat" );
 701     var_CreateGetBool( p_playlist, "loop" );
 702
 703     var_AddCallback( p_playlist, "random", RandomCallback, NULL );
 704 }