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
  42 static int RandomCallback( vlc_object_t *p_this, char const *psz_cmd,
  43                            vlc_value_t oldval, vlc_value_t newval, void *a )
  44 {
  45     (void)psz_cmd; (void)oldval; (void)newval; (void)a;
  46
  47     ((playlist_t*)p_this)->b_reset_currently_playing = VLC_TRUE;
  48     playlist_Signal( ((playlist_t*)p_this) );
  49     return VLC_SUCCESS;
  50 }
  51
  52 /**
  53  * Create playlist
  54  *
  55  * Create a playlist structure.
  56  * \param p_parent the vlc object that is to be the parent of this playlist
  57  * \return a pointer to the created playlist, or NULL on error
  58  */
  59 playlist_t * playlist_Create( vlc_object_t *p_parent )
  60 {
  61     playlist_t *p_playlist;
  62     vlc_bool_t b_save;
  63     int i_tree;
  64
  65     /* Allocate structure */
  66     p_playlist = vlc_object_create( p_parent, VLC_OBJECT_PLAYLIST );
  67     if( !p_playlist )
  68     {
  69         msg_Err( p_parent, "out of memory" );
  70         return NULL;
  71     }
  72
  73     TAB_INIT( p_playlist->i_sds, p_playlist->pp_sds );
  74
  75     p_parent->p_libvlc->p_playlist = p_playlist;
  76
  77     VariablesInit( p_playlist );
  78
  79     /* Initialise data structures */
  80     vlc_mutex_init( p_playlist, &p_playlist->gc_lock );
  81     p_playlist->i_last_playlist_id = 0;
  82     p_playlist->i_last_input_id = 0;
  83     p_playlist->p_input = NULL;
  84
  85     p_playlist->gc_date = 0;
  86     p_playlist->b_cant_sleep = VLC_FALSE;
  87
  88     ARRAY_INIT( p_playlist->items );
  89     ARRAY_INIT( p_playlist->all_items );
  90     ARRAY_INIT( p_playlist->input_items );
  91     ARRAY_INIT( p_playlist->current );
  92
  93     p_playlist->i_current_index = 0;
  94     p_playlist->b_reset_currently_playing = VLC_TRUE;
  95     p_playlist->last_rebuild_date = 0;
  96
  97     i_tree = var_CreateGetBool( p_playlist, "playlist-tree" );
  98     p_playlist->b_always_tree = (i_tree == 1);
  99     p_playlist->b_never_tree = (i_tree == 2);
 100
 101     p_playlist->b_doing_ml = VLC_FALSE;
 102
 103     p_playlist->b_auto_preparse =
 104                         var_CreateGetBool( p_playlist, "auto-preparse" ) ;
 105
 106     p_playlist->p_root_category = playlist_NodeCreate( p_playlist, NULL, NULL,
 107                                     0, NULL );
 108     p_playlist->p_root_onelevel = playlist_NodeCreate( p_playlist, NULL, NULL,
 109                                     0, p_playlist->p_root_category->p_input );
 110
 111     if( !p_playlist->p_root_category || !p_playlist->p_root_onelevel )
 112         return NULL;
 113
 114     /* Create playlist and media library */
 115     playlist_NodesPairCreate( p_playlist, _( "Playlist" ),
 116                             &p_playlist->p_local_category,
 117                             &p_playlist->p_local_onelevel, VLC_FALSE );
 118
 119     p_playlist->p_local_category->i_flags |= PLAYLIST_RO_FLAG;
 120     p_playlist->p_local_onelevel->i_flags |= PLAYLIST_RO_FLAG;
 121
 122     if( !p_playlist->p_local_category || !p_playlist->p_local_onelevel ||
 123         !p_playlist->p_local_category->p_input ||
 124         !p_playlist->p_local_onelevel->p_input )
 125         return NULL;
 126
 127     if( config_GetInt( p_playlist, "media-library") )
 128     {
 129         playlist_NodesPairCreate( p_playlist, _( "Media Library" ),
 130                             &p_playlist->p_ml_category,
 131                             &p_playlist->p_ml_onelevel, VLC_FALSE );
 132
 133         if(!p_playlist->p_ml_category || !p_playlist->p_ml_onelevel)
 134             return NULL;
 135
 136         p_playlist->p_ml_category->i_flags |= PLAYLIST_RO_FLAG;
 137         p_playlist->p_ml_onelevel->i_flags |= PLAYLIST_RO_FLAG;
 138     }
 139     else
 140     {
 141         p_playlist->p_ml_category = p_playlist->p_ml_onelevel = NULL;
 142     }
 143
 144     /* Initial status */
 145     p_playlist->status.p_item = NULL;
 146     p_playlist->status.p_node = p_playlist->p_local_onelevel;
 147     p_playlist->request.b_request = VLC_FALSE;
 148     p_playlist->status.i_status = PLAYLIST_STOPPED;
 149
 150     p_playlist->i_sort = SORT_ID;
 151     p_playlist->i_order = ORDER_NORMAL;
 152
 153
 154     /* Interaction
 155      * Init the interaction here, as playlist_MLLoad could trigger
 156      * interaction init */
 157     p_playlist->p_interaction = NULL;
 158
 159     b_save = p_playlist->b_auto_preparse;
 160     p_playlist->b_auto_preparse = VLC_FALSE;
 161     playlist_MLLoad( p_playlist );
 162     p_playlist->b_auto_preparse = VLC_TRUE;
 163     return p_playlist;
 164 }
 165
 166 /**
 167  * Destroy playlist
 168  *
 169  * Destroy a playlist structure.
 170  * \param p_playlist the playlist object
 171  * \return nothing
 172  */
 173 void playlist_Destroy( playlist_t *p_playlist )
 174 {
 175     var_Destroy( p_playlist, "intf-change" );
 176     var_Destroy( p_playlist, "item-change" );
 177     var_Destroy( p_playlist, "playlist-current" );
 178     var_Destroy( p_playlist, "intf-popupmenu" );
 179     var_Destroy( p_playlist, "intf-show" );
 180     var_Destroy( p_playlist, "play-and-stop" );
 181     var_Destroy( p_playlist, "play-and-exit" );
 182     var_Destroy( p_playlist, "random" );
 183     var_Destroy( p_playlist, "repeat" );
 184     var_Destroy( p_playlist, "loop" );
 185     var_Destroy( p_playlist, "activity" );
 186
 187     vlc_mutex_destroy( &p_playlist->gc_lock );
 188     vlc_object_detach( p_playlist );
 189     vlc_object_release( p_playlist );
 190 }
 191
 192 /* Destroy remaining objects */
 193 static void ObjectGarbageCollector( playlist_t *p_playlist, vlc_bool_t b_force )
 194 {
 195     vlc_object_t *p_obj;
 196
 197     if( !b_force )
 198     {
 199         if( mdate() - p_playlist->gc_date < 1000000 )
 200         {
 201             p_playlist->b_cant_sleep = VLC_TRUE;
 202             return;
 203         }
 204         else if( p_playlist->gc_date == 0 )
 205             return;
 206     }
 207
 208     vlc_mutex_lock( &p_playlist->gc_lock );
 209     while( ( p_obj = vlc_object_find( p_playlist, VLC_OBJECT_VOUT,
 210                                                   FIND_CHILD ) ) )
 211     {
 212         if( p_obj->p_parent != VLC_OBJECT(p_playlist) )
 213         {
 214             vlc_object_release( p_obj );
 215             break;
 216         }
 217         msg_Dbg( p_playlist, "garbage collector destroying 1 vout" );
 218         vlc_object_detach( p_obj );
 219         vlc_object_release( p_obj );
 220         vout_Destroy( (vout_thread_t *)p_obj );
 221     }
 222     while( ( p_obj = vlc_object_find( p_playlist, VLC_OBJECT_SOUT,
 223                                                   FIND_CHILD ) ) )
 224     {
 225         if( p_obj->p_parent != VLC_OBJECT(p_playlist) )
 226         {
 227             vlc_object_release( p_obj );
 228             break;
 229         }
 230         msg_Dbg( p_playlist, "garbage collector destroying 1 sout" );
 231         vlc_object_detach( p_obj );
 232         vlc_object_release( p_obj );
 233         sout_DeleteInstance( (sout_instance_t*)p_obj );
 234     }
 235     p_playlist->b_cant_sleep = VLC_FALSE;
 236     vlc_mutex_unlock( &p_playlist->gc_lock );
 237 }
 238
 239 /**
 240  * Main loop
 241  *
 242  * Main loop for the playlist
 243  * \param p_playlist the playlist object
 244  * \return nothing
 245  */
 246 void playlist_MainLoop( playlist_t *p_playlist )
 247 {
 248     playlist_item_t *p_item = NULL;
 249     vlc_bool_t b_playexit = var_GetBool( p_playlist, "play-and-exit" );
 250     PL_LOCK;
 251
 252     if( p_playlist->b_reset_currently_playing &&
 253         mdate() - p_playlist->last_rebuild_date > 30000 ) // 30 ms
 254     {
 255         ResetCurrentlyPlaying( p_playlist, var_GetBool( p_playlist, "random" ),
 256                              p_playlist->status.p_item );
 257         p_playlist->last_rebuild_date = mdate();
 258     }
 259
 260 check_input:
 261     /* If there is an input, check that it doesn't need to die. */
 262     if( p_playlist->p_input )
 263     {
 264         if( p_playlist->request.b_request && !p_playlist->p_input->b_die )
 265         {
 266             PL_DEBUG( "incoming request - stopping current input" );
 267             input_StopThread( p_playlist->p_input );
 268         }
 269
 270         /* This input is dead. Remove it ! */
 271         if( p_playlist->p_input->b_dead )
 272         {
 273             int i_activity;
 274             input_thread_t *p_input;
 275             PL_DEBUG( "dead input" );
 276
 277             p_input = p_playlist->p_input;
 278             p_playlist->p_input = NULL;
 279
 280             /* Release the playlist lock, because we may get stuck
 281              * in input_DestroyThread() for some time. */
 282             PL_UNLOCK;
 283
 284             /* Destroy input */
 285             input_DestroyThread( p_input );
 286
 287             PL_LOCK;
 288
 289             p_playlist->gc_date = mdate();
 290             p_playlist->b_cant_sleep = VLC_TRUE;
 291
 292             if( p_playlist->status.p_item->i_flags
 293                 & PLAYLIST_REMOVE_FLAG )
 294             {
 295                  PL_DEBUG( "%s was marked for deletion, deleting",
 296                                  PLI_NAME( p_playlist->status.p_item  ) );
 297                  playlist_ItemDelete( p_playlist->status.p_item );
 298                  if( p_playlist->request.p_item == p_playlist->status.p_item )
 299                      p_playlist->request.p_item = NULL;
 300                  p_playlist->status.p_item = NULL;
 301             }
 302
 303             i_activity= var_GetInteger( p_playlist, "activity" );
 304             var_SetInteger( p_playlist, "activity", i_activity -
 305                             DEFAULT_INPUT_ACTIVITY );
 306             goto check_input;
 307         }
 308         /* This input is dying, let it do */
 309         else if( p_playlist->p_input->b_die )
 310         {
 311             PL_DEBUG( "dying input" );
 312             PL_UNLOCK;
 313             msleep( INTF_IDLE_SLEEP );
 314             PL_LOCK;
 315             goto check_input;
 316         }
 317         /* This input has finished, ask it to die ! */
 318         else if( p_playlist->p_input->b_error
 319                   || p_playlist->p_input->b_eof )
 320         {
 321             PL_DEBUG( "finished input" );
 322             input_StopThread( p_playlist->p_input );
 323             /* No need to wait here, we'll wait in the p_input->b_die case */
 324             goto check_input;
 325         }
 326         else if( p_playlist->p_input->i_state != INIT_S )
 327         {
 328             PL_UNLOCK;
 329             ObjectGarbageCollector( p_playlist, VLC_FALSE );
 330             PL_LOCK;
 331         }
 332     }
 333     else
 334     {
 335         /* No input. Several cases
 336          *  - No request, running status -> start new item
 337          *  - No request, stopped status -> collect garbage
 338          *  - Request, running requested -> start new item
 339          *  - Request, stopped requested -> collect garbage
 340         */
 341         if( p_playlist->request.i_status != PLAYLIST_STOPPED )
 342         {
 343             msg_Dbg( p_playlist, "starting new item" );
 344             p_item = playlist_NextItem( p_playlist );
 345
 346             if( p_item == NULL )
 347             {
 348                 msg_Dbg( p_playlist, "nothing to play" );
 349                 p_playlist->status.i_status = PLAYLIST_STOPPED;
 350                 PL_UNLOCK;
 351
 352                 if( b_playexit == VLC_TRUE )
 353                 {
 354                     msg_Info( p_playlist, "end of playlist, exiting" );
 355                     vlc_object_kill( p_playlist->p_libvlc );
 356                 }
 357                 ObjectGarbageCollector( p_playlist, VLC_TRUE );
 358                 return;
 359              }
 360              playlist_PlayItem( p_playlist, p_item );
 361          }
 362          else
 363          {
 364             const vlc_bool_t b_gc_forced = p_playlist->status.i_status != PLAYLIST_STOPPED;
 365
 366             p_playlist->status.i_status = PLAYLIST_STOPPED;
 367             if( p_playlist->status.p_item &&
 368                 p_playlist->status.p_item->i_flags & PLAYLIST_REMOVE_FLAG )
 369             {
 370                 PL_DEBUG( "deleting item marked for deletion" );
 371                 playlist_ItemDelete( p_playlist->status.p_item );
 372                 p_playlist->status.p_item = NULL;
 373             }
 374
 375             /* Collect garbage */
 376             PL_UNLOCK;
 377             ObjectGarbageCollector( p_playlist, b_gc_forced );
 378             PL_LOCK;
 379         }
 380     }
 381     PL_UNLOCK;
 382 }
 383
 384
 385 /**
 386  * Last loop
 387  *
 388  * The playlist is dying so do the last loop
 389  * \param p_playlist the playlist object
 390  * \return nothing
 391 */
 392 void playlist_LastLoop( playlist_t *p_playlist )
 393 {
 394     vlc_object_t *p_obj;
 395
 396     /* If there is an input, kill it */
 397     while( 1 )
 398     {
 399         PL_LOCK;
 400         if( p_playlist->p_input == NULL )
 401         {
 402             PL_UNLOCK;
 403             break;
 404         }
 405
 406         if( p_playlist->p_input->b_dead )
 407         {
 408             input_thread_t *p_input;
 409
 410             /* Unlink current input */
 411             p_input = p_playlist->p_input;
 412             p_playlist->p_input = NULL;
 413             PL_UNLOCK;
 414
 415             /* Destroy input */
 416             input_DestroyThread( p_input );
 417             continue;
 418         }
 419         else if( p_playlist->p_input->b_die )
 420         {
 421             /* This input is dying, leave it alone */
 422             ;
 423         }
 424         else if( p_playlist->p_input->b_error || p_playlist->p_input->b_eof )
 425         {
 426             input_StopThread( p_playlist->p_input );
 427             PL_UNLOCK;
 428             continue;
 429         }
 430         else
 431         {
 432             p_playlist->p_input->b_eof = 1;
 433         }
 434         PL_UNLOCK;
 435
 436         msleep( INTF_IDLE_SLEEP );
 437     }
 438
 439     /* close all remaining sout */
 440     while( ( p_obj = vlc_object_find( p_playlist,
 441                                       VLC_OBJECT_SOUT, FIND_CHILD ) ) )
 442     {
 443         vlc_object_detach( p_obj );
 444         vlc_object_release( p_obj );
 445         sout_DeleteInstance( (sout_instance_t*)p_obj );
 446     }
 447
 448     /* close all remaining vout */
 449     while( ( p_obj = vlc_object_find( p_playlist,
 450                                       VLC_OBJECT_VOUT, FIND_CHILD ) ) )
 451     {
 452         vlc_object_detach( p_obj );
 453         vlc_object_release( p_obj );
 454         vout_Destroy( (vout_thread_t *)p_obj );
 455     }
 456
 457     while( p_playlist->i_sds )
 458     {
 459         playlist_ServicesDiscoveryRemove( p_playlist,
 460                                           p_playlist->pp_sds[0]->p_sd->psz_module );
 461     }
 462
 463     playlist_MLDump( p_playlist );
 464
 465     PL_LOCK;
 466     /* Go through all items, and simply free everything without caring
 467      * about the tree structure. Do not decref, it will be done by doing
 468      * the same thing on the input items array */
 469     FOREACH_ARRAY( playlist_item_t *p_del, p_playlist->all_items )
 470         free( p_del->pp_children );
 471         free( p_del );
 472     FOREACH_END();
 473     ARRAY_RESET( p_playlist->all_items );
 474
 475     FOREACH_ARRAY( input_item_t *p_del, p_playlist->input_items )
 476         input_ItemClean( p_del );
 477         free( p_del );
 478     FOREACH_END();
 479     ARRAY_RESET( p_playlist->input_items );
 480
 481     ARRAY_RESET( p_playlist->items );
 482     ARRAY_RESET( p_playlist->current );
 483
 484     PL_UNLOCK;
 485 }
 486
 487 /**
 488  * Preparse loop
 489  *
 490  * Main loop for preparser queue
 491  * \param p_obj items to preparse
 492  * \return nothing
 493  */
 494 void playlist_PreparseLoop( playlist_preparse_t *p_obj )
 495 {
 496     playlist_t *p_playlist = (playlist_t *)p_obj->p_parent;
 497     input_item_t *p_current;
 498     int i_activity;
 499     uint32_t i_m, i_o;
 500
 501     while( !p_playlist->b_die )
 502     {
 503         vlc_object_lock( p_obj );
 504         while( p_obj->i_waiting == 0 )
 505         {
 506             if( vlc_object_wait( p_obj ) || p_playlist->b_die )
 507             {
 508                 vlc_object_unlock( p_obj );
 509                 return;
 510             }
 511         }
 512
 513         p_current = p_obj->pp_waiting[0];
 514         REMOVE_ELEM( p_obj->pp_waiting, p_obj->i_waiting, 0 );
 515         vlc_object_unlock( p_obj );
 516
 517         PL_LOCK;
 518         if( p_current )
 519         {
 520             if( p_current->i_type == ITEM_TYPE_FILE )
 521             {
 522                 stats_TimerStart( p_playlist, "Preparse run",
 523                                   STATS_TIMER_PREPARSE );
 524                 /* Do not preparse if it is already done (like by playing it) */
 525                 if( !input_item_IsPreparsed( p_current ) )
 526                 {
 527                     PL_UNLOCK;
 528                     input_Preparse( p_playlist, p_current );
 529                     PL_LOCK;
 530                 }
 531                 stats_TimerStop( p_playlist, STATS_TIMER_PREPARSE );
 532                 PL_UNLOCK;
 533                 input_item_SetPreparsed( p_current, VLC_TRUE );
 534                 var_SetInteger( p_playlist, "item-change", p_current->i_id );
 535                 PL_LOCK;
 536             }
 537             /* If we haven't retrieved enough meta, add to secondary queue
 538              * which will run the "meta fetchers".
 539              * This only checks for meta, not for art
 540              * \todo don't do this for things we won't get meta for, like vids
 541              */
 542             char *psz_arturl = input_item_GetArtURL( p_current );
 543             char *psz_name = input_item_GetName( p_current );
 544             if( !input_MetaSatisfied( p_playlist, p_current, &i_m, &i_o ) )
 545             {
 546                 preparse_item_t p;
 547                 PL_DEBUG( "need to fetch meta for %s", p_current->psz_name );
 548                 p.p_item = p_current;
 549                 p.b_fetch_art = VLC_FALSE;
 550                 vlc_object_lock( p_playlist->p_fetcher );
 551                 INSERT_ELEM( p_playlist->p_fetcher->p_waiting,
 552                              p_playlist->p_fetcher->i_waiting,
 553                              p_playlist->p_fetcher->i_waiting, p);
 554                 vlc_object_signal_unlocked( p_playlist->p_fetcher );
 555                 vlc_object_unlock( p_playlist->p_fetcher );
 556             }
 557             /* We already have all needed meta, but we need art right now */
 558             else if( p_playlist->p_fetcher->i_art_policy == ALBUM_ART_ALL &&
 559                         ( !psz_arturl || strncmp( psz_arturl, "file://", 7 ) ) )
 560             {
 561                 preparse_item_t p;
 562                 PL_DEBUG("meta ok for %s, need to fetch art", psz_name );
 563                 p.p_item = p_current;
 564                 p.b_fetch_art = VLC_TRUE;
 565                 vlc_object_lock( p_playlist->p_fetcher );
 566                 INSERT_ELEM( p_playlist->p_fetcher->p_waiting,
 567                              p_playlist->p_fetcher->i_waiting,
 568                              p_playlist->p_fetcher->i_waiting, p);
 569                 vlc_object_signal_unlocked( p_playlist->p_fetcher );
 570                 vlc_object_unlock( p_playlist->p_fetcher );
 571             }
 572             else
 573             {
 574                 PL_DEBUG( "no fetch required for %s (art currently %s)",
 575                           psz_name, psz_arturl );
 576                 vlc_gc_decref( p_current );
 577             }
 578             free( psz_name );
 579             free( psz_arturl );
 580             PL_UNLOCK;
 581         }
 582         else
 583             PL_UNLOCK;
 584
 585         vlc_object_lock( p_obj );
 586         i_activity = var_GetInteger( p_playlist, "activity" );
 587         if( i_activity < 0 ) i_activity = 0;
 588         vlc_object_unlock( p_obj );
 589         /* Sleep at least 1ms */
 590         msleep( (i_activity+1) * 1000 );
 591     }
 592 }
 593
 594 /**
 595  * Fetcher loop
 596  *
 597  * Main loop for secondary preparser queue
 598  * \param p_obj items to preparse
 599  * \return nothing
 600  */
 601 void playlist_FetcherLoop( playlist_fetcher_t *p_obj )
 602 {
 603     playlist_t *p_playlist = (playlist_t *)p_obj->p_parent;
 604     vlc_bool_t b_fetch_art;
 605     input_item_t *p_item;
 606     int i_activity;
 607
 608     while( !p_playlist->b_die )
 609     {
 610         vlc_mutex_lock( &p_obj->object_lock );
 611         while( p_obj->i_waiting == 0 )
 612         {
 613             vlc_cond_wait( &p_obj->object_wait, &p_obj->object_lock );
 614             if( p_playlist->b_die )
 615             {
 616                 vlc_mutex_unlock( &p_obj->object_lock );
 617                 return;
 618             }
 619         }
 620
 621         b_fetch_art = p_obj->p_waiting->b_fetch_art;
 622         p_item = p_obj->p_waiting->p_item;
 623         REMOVE_ELEM( p_obj->p_waiting, p_obj->i_waiting, 0 );
 624         vlc_mutex_unlock( &p_obj->object_lock );
 625         if( p_item )
 626         {
 627             if( !b_fetch_art )
 628             {
 629                 /* If the user doesn't want us to fetch meta automatically
 630                  * abort here. */
 631                 if( p_playlist->p_fetcher->b_fetch_meta )
 632                 {
 633                     input_MetaFetch( p_playlist, p_item );
 634                     var_SetInteger( p_playlist, "item-change", p_item->i_id );
 635                 }
 636
 637                 /*  Fetch right now */
 638                 if( p_playlist->p_fetcher->i_art_policy == ALBUM_ART_ALL )
 639                 {
 640                     vlc_mutex_lock( &p_obj->object_lock );
 641                     preparse_item_t p;
 642                     p.p_item = p_item;
 643                     p.b_fetch_art = VLC_TRUE;
 644                     INSERT_ELEM( p_playlist->p_fetcher->p_waiting,
 645                                  p_playlist->p_fetcher->i_waiting,
 646                                  0, p );
 647                     PL_DEBUG( "meta fetched for %s, get art", p_item->psz_name );
 648                     vlc_mutex_unlock( &p_obj->object_lock );
 649                     continue;
 650                 }
 651                 else
 652                     vlc_gc_decref( p_item );
 653             }
 654             else
 655             {
 656                 int i_ret;
 657
 658                 /* Check if it is not yet preparsed and if so wait for it (at most 0.5s)
 659                  * (This can happen if we fetch art on play)
 660                  * FIXME this doesn't work if we need to fetch meta before art ... */
 661                 for( i_ret = 0; i_ret < 10 && !input_item_IsPreparsed( p_item ); i_ret++ )
 662                 {
 663                     vlc_bool_t b_break;
 664                     PL_LOCK;
 665                     b_break = ( !p_playlist->p_input || input_GetItem(p_playlist->p_input) != p_item  ||
 666                                 p_playlist->p_input->b_die || p_playlist->p_input->b_eof || p_playlist->p_input->b_error );
 667                     PL_UNLOCK;
 668                     if( b_break )
 669                         break;
 670                     msleep( 50000 );
 671                 }
 672
 673                 i_ret = input_ArtFind( p_playlist, p_item );
 674                 if( i_ret == 1 )
 675                 {
 676                     PL_DEBUG( "downloading art for %s", p_item->psz_name );
 677                     if( input_DownloadAndCacheArt( p_playlist, p_item ) )
 678                         input_item_SetArtNotFound( p_item, VLC_TRUE );
 679                     else {
 680                         input_item_SetArtFetched( p_item, VLC_TRUE );
 681                         var_SetInteger( p_playlist, "item-change",
 682                                         p_item->i_id );
 683                     }
 684                 }
 685                 else if( i_ret == 0 ) /* Was in cache */
 686                 {
 687                     PL_DEBUG( "found art for %s in cache", p_item->psz_name );
 688                     input_item_SetArtFetched( p_item, VLC_TRUE );
 689                     var_SetInteger( p_playlist, "item-change", p_item->i_id );
 690                 }
 691                 else
 692                 {
 693                     PL_DEBUG( "art not found for %s", p_item->psz_name );
 694                     input_item_SetArtNotFound( p_item, VLC_TRUE );
 695                 }
 696                 vlc_gc_decref( p_item );
 697            }
 698         }
 699         vlc_object_lock( p_obj );
 700         i_activity = var_GetInteger( p_playlist, "activity" );
 701         if( i_activity < 0 ) i_activity = 0;
 702         vlc_object_unlock( p_obj );
 703         /* Sleep at least 1ms */
 704         msleep( (i_activity+1) * 1000 );
 705     }
 706 }
 707
 708 static void VariablesInit( playlist_t *p_playlist )
 709 {
 710     vlc_value_t val;
 711     /* These variables control updates */
 712     var_Create( p_playlist, "intf-change", VLC_VAR_BOOL );
 713     val.b_bool = VLC_TRUE;
 714     var_Set( p_playlist, "intf-change", val );
 715
 716     var_Create( p_playlist, "item-change", VLC_VAR_INTEGER );
 717     val.i_int = -1;
 718     var_Set( p_playlist, "item-change", val );
 719
 720     var_Create( p_playlist, "item-deleted", VLC_VAR_INTEGER );
 721     val.i_int = -1;
 722     var_Set( p_playlist, "item-deleted", val );
 723
 724     var_Create( p_playlist, "item-append", VLC_VAR_ADDRESS );
 725
 726     var_Create( p_playlist, "playlist-current", VLC_VAR_INTEGER );
 727     val.i_int = -1;
 728     var_Set( p_playlist, "playlist-current", val );
 729
 730     var_Create( p_playlist, "intf-popupmenu", VLC_VAR_BOOL );
 731
 732     var_Create( p_playlist, "intf-show", VLC_VAR_BOOL );
 733     val.b_bool = VLC_TRUE;
 734     var_Set( p_playlist, "intf-show", val );
 735
 736     var_Create( p_playlist, "activity", VLC_VAR_INTEGER );
 737     var_SetInteger( p_playlist, "activity", 0 );
 738
 739     /* Variables to control playback */
 740     var_CreateGetBool( p_playlist, "play-and-stop" );
 741     var_CreateGetBool( p_playlist, "play-and-exit" );
 742     var_CreateGetBool( p_playlist, "random" );
 743     var_CreateGetBool( p_playlist, "repeat" );
 744     var_CreateGetBool( p_playlist, "loop" );
 745
 746     var_AddCallback( p_playlist, "random", RandomCallback, NULL );
 747 }