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 #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                 /* If the user doesn't want us to fetch meta automatically
 594                  * abort here. */
 595                 if( p_playlist->p_fetcher->b_fetch_meta )
 596                 {
 597                     input_MetaFetch( p_playlist, p_item );
 598                     var_SetInteger( p_playlist, "item-change", p_item->i_id );
 599                 }
 600
 601                 /*  Fetch right now */
 602                 if( p_playlist->p_fetcher->i_art_policy == ALBUM_ART_ALL )
 603                 {
 604                     vlc_mutex_lock( &p_obj->object_lock );
 605                     preparse_item_t p;
 606                     p.p_item = p_item;
 607                     p.b_fetch_art = VLC_TRUE;
 608                     INSERT_ELEM( p_playlist->p_fetcher->p_waiting,
 609                                  p_playlist->p_fetcher->i_waiting,
 610                                  0, p );
 611                     PL_DEBUG("meta fetched for %s, get art", p_item->psz_name);
 612                     vlc_mutex_unlock( &p_obj->object_lock );
 613                     continue;
 614                 }
 615                 else
 616                     vlc_gc_decref( p_item );
 617             }
 618             else
 619             {
 620                 int i_ret;
 621
 622                 /* Check if it is not yet preparsed and if so wait for it (at most 0.5s)
 623                  * (This can happen if we fetch art on play)
 624                  * FIXME this doesn't work if we need to fetch meta before art ... */
 625                 for( i_ret = 0; i_ret < 10 && !input_item_IsPreparsed( p_item ); i_ret++ )
 626                 {
 627                     vlc_bool_t b_break;
 628                     PL_LOCK;
 629                     b_break = ( !p_playlist->p_input || input_GetItem(p_playlist->p_input) != p_item  ||
 630                                 p_playlist->p_input->b_die || p_playlist->p_input->b_eof || p_playlist->p_input->b_error );
 631                     PL_UNLOCK;
 632                     if( b_break )
 633                         break;
 634                     msleep( 50000 );
 635                 }
 636
 637                 i_ret = input_ArtFind( p_playlist, p_item );
 638                 if( i_ret == 1 )
 639                 {
 640                     PL_DEBUG("downloading art for %s", p_item->psz_name );
 641                     if( input_DownloadAndCacheArt( p_playlist, p_item ) )
 642                         input_item_SetArtNotFound( p_item, VLC_TRUE );
 643                     else {
 644                         input_item_SetArtFetched( p_item, VLC_TRUE );
 645                         var_SetInteger( p_playlist, "item-change",
 646                                         p_item->i_id );
 647                     }
 648                 }
 649                 else if( i_ret == 0 ) /* Was in cache */
 650                 {
 651                     PL_DEBUG("found art for %s in cache", p_item->psz_name );
 652                     input_item_SetArtFetched( p_item, VLC_TRUE );
 653                     var_SetInteger( p_playlist, "item-change", p_item->i_id );
 654                 }
 655                 else
 656                 {
 657                     PL_DEBUG("art not found for %s", p_item->psz_name );
 658                     input_item_SetArtNotFound( p_item, VLC_TRUE );
 659                 }
 660                 vlc_gc_decref( p_item );
 661            }
 662         }
 663         vlc_mutex_lock( &p_obj->object_lock );
 664         i_activity = var_GetInteger( p_playlist, "activity" );
 665         if( i_activity < 0 ) i_activity = 0;
 666         vlc_mutex_unlock( &p_obj->object_lock );
 667         /* Sleep at least 1ms */
 668         msleep( (i_activity+1) * 1000 );
 669     }
 670 }
 671
 672 static void VariablesInit( playlist_t *p_playlist )
 673 {
 674     vlc_value_t val;
 675     /* These variables control updates */
 676     var_Create( p_playlist, "intf-change", VLC_VAR_BOOL );
 677     val.b_bool = VLC_TRUE;
 678     var_Set( p_playlist, "intf-change", val );
 679
 680     var_Create( p_playlist, "item-change", VLC_VAR_INTEGER );
 681     val.i_int = -1;
 682     var_Set( p_playlist, "item-change", val );
 683
 684     var_Create( p_playlist, "item-deleted", VLC_VAR_INTEGER );
 685     val.i_int = -1;
 686     var_Set( p_playlist, "item-deleted", val );
 687
 688     var_Create( p_playlist, "item-append", VLC_VAR_ADDRESS );
 689
 690     var_Create( p_playlist, "playlist-current", VLC_VAR_INTEGER );
 691     val.i_int = -1;
 692     var_Set( p_playlist, "playlist-current", val );
 693
 694     var_Create( p_playlist, "intf-popupmenu", VLC_VAR_BOOL );
 695
 696     var_Create( p_playlist, "intf-show", VLC_VAR_BOOL );
 697     val.b_bool = VLC_TRUE;
 698     var_Set( p_playlist, "intf-show", val );
 699
 700     var_Create( p_playlist, "activity", VLC_VAR_INTEGER );
 701     var_SetInteger( p_playlist, "activity", 0 );
 702
 703     /* Variables to control playback */
 704     var_CreateGetBool( p_playlist, "play-and-stop" );
 705     var_CreateGetBool( p_playlist, "play-and-exit" );
 706     var_CreateGetBool( p_playlist, "random" );
 707     var_CreateGetBool( p_playlist, "repeat" );
 708     var_CreateGetBool( p_playlist, "loop" );
 709
 710     var_AddCallback( p_playlist, "random", RandomCallback, NULL );
 711 }