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     libvlc_priv(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 }