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) 1999-2008 the VideoLAN team
   5  *
   6  * Authors: Samuel Hocevar <sam@zoy.org>
   7  *          Clément Stenac <zorglub@videolan.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 #ifdef HAVE_CONFIG_H
  25 # include "config.h"
  26 #endif
  27
  28 #include <stddef.h>
  29 #include <assert.h>
  30 #include <vlc_common.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     playlist_private_t *p;
  65     bool b_save;
  66
  67     /* Allocate structure */
  68     p = vlc_custom_create( p_parent, sizeof( *p ),
  69                            VLC_OBJECT_GENERIC, playlist_name );
  70     if( !p )
  71         return NULL;
  72
  73     assert( offsetof( playlist_private_t, public_data ) == 0 );
  74     p_playlist = &p->public_data;
  75     TAB_INIT( pl_priv(p_playlist)->i_sds, pl_priv(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     p_playlist->i_last_playlist_id = 0;
  83     pl_priv(p_playlist)->p_input = NULL;
  84
  85     pl_priv(p_playlist)->gc_date = 0;
  86     pl_priv(p_playlist)->b_cant_sleep = false;
  87
  88     ARRAY_INIT( p_playlist->items );
  89     ARRAY_INIT( p_playlist->all_items );
  90     ARRAY_INIT( pl_priv(p_playlist)->items_to_delete );
  91     ARRAY_INIT( p_playlist->current );
  92
  93     p_playlist->i_current_index = 0;
  94     p_playlist->b_reset_currently_playing = true;
  95     pl_priv(p_playlist)->last_rebuild_date = 0;
  96
  97     pl_priv(p_playlist)->b_tree = var_CreateGetBool( p_playlist, "playlist-tree" );
  98
  99     pl_priv(p_playlist)->b_doing_ml = false;
 100
 101     pl_priv(p_playlist)->b_auto_preparse =
 102                         var_CreateGetBool( p_playlist, "auto-preparse" ) ;
 103
 104     PL_LOCK; /* playlist_NodeCreate will check for it */
 105     p_playlist->p_root_category = playlist_NodeCreate( p_playlist, NULL, NULL,
 106                                     0, NULL );
 107     p_playlist->p_root_onelevel = playlist_NodeCreate( p_playlist, NULL, NULL,
 108                                     0, p_playlist->p_root_category->p_input );
 109     PL_UNLOCK;
 110
 111     if( !p_playlist->p_root_category || !p_playlist->p_root_onelevel )
 112         return NULL;
 113
 114     /* Create playlist and media library */
 115     PL_LOCK; /* playlist_NodesPairCreate will check for it */
 116     playlist_NodesPairCreate( p_playlist, _( "Playlist" ),
 117                             &p_playlist->p_local_category,
 118                             &p_playlist->p_local_onelevel, false );
 119     PL_UNLOCK;
 120
 121     p_playlist->p_local_category->i_flags |= PLAYLIST_RO_FLAG;
 122     p_playlist->p_local_onelevel->i_flags |= PLAYLIST_RO_FLAG;
 123
 124     if( !p_playlist->p_local_category || !p_playlist->p_local_onelevel ||
 125         !p_playlist->p_local_category->p_input ||
 126         !p_playlist->p_local_onelevel->p_input )
 127         return NULL;
 128
 129     if( config_GetInt( p_playlist, "media-library") )
 130     {
 131         PL_LOCK; /* playlist_NodesPairCreate will check for it */
 132         playlist_NodesPairCreate( p_playlist, _( "Media Library" ),
 133                             &p_playlist->p_ml_category,
 134                             &p_playlist->p_ml_onelevel, false );
 135         PL_UNLOCK;
 136
 137         if(!p_playlist->p_ml_category || !p_playlist->p_ml_onelevel)
 138             return NULL;
 139
 140         p_playlist->p_ml_category->i_flags |= PLAYLIST_RO_FLAG;
 141         p_playlist->p_ml_onelevel->i_flags |= PLAYLIST_RO_FLAG;
 142     }
 143     else
 144     {
 145         p_playlist->p_ml_category = p_playlist->p_ml_onelevel = NULL;
 146     }
 147
 148     /* Initial status */
 149     pl_priv(p_playlist)->status.p_item = NULL;
 150     pl_priv(p_playlist)->status.p_node = p_playlist->p_local_onelevel;
 151     pl_priv(p_playlist)->request.b_request = false;
 152     pl_priv(p_playlist)->status.i_status = PLAYLIST_STOPPED;
 153
 154     b_save = pl_priv(p_playlist)->b_auto_preparse;
 155     pl_priv(p_playlist)->b_auto_preparse = false;
 156     playlist_MLLoad( p_playlist );
 157     pl_priv(p_playlist)->b_auto_preparse = true;
 158
 159     vlc_object_set_destructor( p_playlist, playlist_Destructor );
 160
 161     return p_playlist;
 162 }
 163
 164 /**
 165  * Destroy playlist
 166  *
 167  * Destroy a playlist structure.
 168  * \param p_playlist the playlist object
 169  * \return nothing
 170  */
 171
 172 static void playlist_Destructor( vlc_object_t * p_this )
 173 {
 174     playlist_t * p_playlist = (playlist_t *)p_this;
 175
 176     /* Destroy the item preparser */
 177     playlist_preparse_t *p_preparse = &pl_priv(p_playlist)->preparse;
 178     if (p_preparse->up)
 179     {
 180         vlc_cancel (p_preparse->thread);
 181         vlc_join (p_preparse->thread, NULL);
 182     }
 183     while (p_preparse->i_waiting > 0)
 184     {   /* Any left-over unparsed item? */
 185         vlc_gc_decref (p_preparse->pp_waiting[0]);
 186         REMOVE_ELEM (p_preparse->pp_waiting, p_preparse->i_waiting, 0);
 187     }
 188     vlc_cond_destroy (&p_preparse->wait);
 189     vlc_mutex_destroy (&p_preparse->lock);
 190
 191     /* Destroy the item meta-infos fetcher */
 192     playlist_fetcher_t *p_fetcher = &pl_priv(p_playlist)->fetcher;
 193     if (p_fetcher->up)
 194     {
 195         vlc_cancel (p_fetcher->thread);
 196         vlc_join (p_fetcher->thread, NULL);
 197     }
 198     while (p_fetcher->i_waiting > 0)
 199     {   /* Any left-over unparsed item? */
 200         vlc_gc_decref (p_fetcher->pp_waiting[0]);
 201         REMOVE_ELEM (p_fetcher->pp_waiting, p_fetcher->i_waiting, 0);
 202     }
 203     vlc_cond_destroy (&p_fetcher->wait);
 204     vlc_mutex_destroy (&p_fetcher->lock);
 205
 206     msg_Dbg( p_this, "Destroyed" );
 207 }
 208
 209 /* Destroy remaining objects */
 210 static void ObjectGarbageCollector( playlist_t *p_playlist, bool b_force )
 211 {
 212     if( !b_force )
 213     {
 214         if( mdate() - pl_priv(p_playlist)->gc_date < 1000000 )
 215         {
 216            pl_priv(p_playlist)->b_cant_sleep = true;
 217             return;
 218         }
 219         else if( pl_priv(p_playlist)->gc_date == 0 )
 220             return;
 221     }
 222
 223     pl_priv(p_playlist)->b_cant_sleep = false;
 224 }
 225
 226 /* Input Callback */
 227 static void input_state_changed( const vlc_event_t * event, void * data )
 228 {
 229     (void)event;
 230     playlist_t * p_playlist = data;
 231     playlist_Signal( p_playlist );
 232 }
 233
 234 /* Input Callback */
 235 static void input_selected_stream_changed( const vlc_event_t * event, void * data )
 236 {
 237     (void)event;
 238     playlist_t * p_playlist = data;
 239     PL_LOCK;
 240     pl_priv(p_playlist)->gc_date = mdate();
 241     vlc_object_signal_unlocked( p_playlist );
 242     PL_UNLOCK;
 243 }
 244
 245 /* Internals */
 246 void playlist_release_current_input( playlist_t * p_playlist )
 247 {
 248     PL_ASSERT_LOCKED;
 249
 250     if( !pl_priv(p_playlist)->p_input ) return;
 251
 252     input_thread_t * p_input = pl_priv(p_playlist)->p_input;
 253     vlc_event_manager_t * p_em = input_get_event_manager( p_input );
 254
 255     vlc_event_detach( p_em, vlc_InputStateChanged,
 256                       input_state_changed, p_playlist );
 257     vlc_event_detach( p_em, vlc_InputSelectedStreamChanged,
 258                       input_selected_stream_changed, p_playlist );
 259     pl_priv(p_playlist)->p_input = NULL;
 260
 261     /* Release the playlist lock, because we may get stuck
 262      * in vlc_object_release() for some time. */
 263     PL_UNLOCK;
 264     vlc_thread_join( p_input );
 265     vlc_object_release( p_input );
 266     PL_LOCK;
 267 }
 268
 269 void playlist_set_current_input(
 270     playlist_t * p_playlist, input_thread_t * p_input )
 271 {
 272     PL_ASSERT_LOCKED;
 273
 274     playlist_release_current_input( p_playlist );
 275
 276     if( p_input )
 277     {
 278         vlc_object_hold( p_input );
 279         pl_priv(p_playlist)->p_input = p_input;
 280         vlc_event_manager_t * p_em = input_get_event_manager( p_input );
 281         vlc_event_attach( p_em, vlc_InputStateChanged,
 282                           input_state_changed, p_playlist );
 283         vlc_event_attach( p_em, vlc_InputSelectedStreamChanged,
 284                           input_selected_stream_changed, p_playlist );
 285     }
 286 }
 287
 288 /** Get current playing input.
 289  */
 290 input_thread_t * playlist_CurrentInput( playlist_t * p_playlist )
 291 {
 292     input_thread_t * p_input;
 293     PL_LOCK;
 294     p_input = pl_priv(p_playlist)->p_input;
 295     if( p_input ) vlc_object_hold( p_input );
 296     PL_UNLOCK;
 297     return p_input;
 298 }
 299
 300 /**
 301  * @}
 302  */
 303
 304 /** Accessor for status item and status nodes.
 305  */
 306 playlist_item_t * get_current_status_item( playlist_t * p_playlist )
 307 {
 308     PL_ASSERT_LOCKED;
 309
 310     return pl_priv(p_playlist)->status.p_item;
 311 }
 312
 313 playlist_item_t * get_current_status_node( playlist_t * p_playlist )
 314 {
 315     PL_ASSERT_LOCKED;
 316
 317     return pl_priv(p_playlist)->status.p_node;
 318 }
 319
 320 void set_current_status_item( playlist_t * p_playlist,
 321     playlist_item_t * p_item )
 322 {
 323     PL_ASSERT_LOCKED;
 324
 325     if( pl_priv(p_playlist)->status.p_item &&
 326         pl_priv(p_playlist)->status.p_item->i_flags & PLAYLIST_REMOVE_FLAG &&
 327         pl_priv(p_playlist)->status.p_item != p_item )
 328     {
 329         /* It's unsafe given current design to delete a playlist item :(
 330         playlist_ItemDelete( pl_priv(p_playlist)->status.p_item ); */
 331     }
 332     pl_priv(p_playlist)->status.p_item = p_item;
 333 }
 334
 335 void set_current_status_node( playlist_t * p_playlist,
 336     playlist_item_t * p_node )
 337 {
 338     PL_ASSERT_LOCKED;
 339
 340     if( pl_priv(p_playlist)->status.p_node &&
 341         pl_priv(p_playlist)->status.p_node->i_flags & PLAYLIST_REMOVE_FLAG &&
 342         pl_priv(p_playlist)->status.p_node != p_node )
 343     {
 344         /* It's unsafe given current design to delete a playlist item :(
 345         playlist_ItemDelete( pl_priv(p_playlist)->status.p_node ); */
 346     }
 347     pl_priv(p_playlist)->status.p_node = p_node;
 348 }
 349
 350 /**
 351  * Main loop
 352  *
 353  * Main loop for the playlist. It should be entered with the
 354  * playlist lock (otherwise input event may be lost)
 355  * \param p_playlist the playlist object
 356  * \return nothing
 357  */
 358 void playlist_MainLoop( playlist_t *p_playlist )
 359 {
 360     playlist_item_t *p_item = NULL;
 361     bool b_playexit = var_GetBool( p_playlist, "play-and-exit" );
 362
 363     PL_ASSERT_LOCKED;
 364
 365     if( p_playlist->b_reset_currently_playing &&
 366         mdate() - pl_priv(p_playlist)->last_rebuild_date > 30000 ) // 30 ms
 367     {
 368         ResetCurrentlyPlaying( p_playlist, var_GetBool( p_playlist, "random" ),
 369                                get_current_status_item( p_playlist ) );
 370         pl_priv(p_playlist)->last_rebuild_date = mdate();
 371     }
 372
 373 check_input:
 374     /* If there is an input, check that it doesn't need to die. */
 375     if( pl_priv(p_playlist)->p_input )
 376     {
 377         if( pl_priv(p_playlist)->request.b_request && !pl_priv(p_playlist)->p_input->b_die )
 378         {
 379             PL_DEBUG( "incoming request - stopping current input" );
 380             input_StopThread( pl_priv(p_playlist)->p_input );
 381         }
 382
 383         /* This input is dead. Remove it ! */
 384         if( pl_priv(p_playlist)->p_input->b_dead )
 385         {
 386             int i_activity;
 387             input_thread_t *p_input;
 388             sout_instance_t **pp_sout = &pl_priv(p_playlist)->p_sout;
 389
 390             PL_DEBUG( "dead input" );
 391
 392             p_input = pl_priv(p_playlist)->p_input;
 393
 394             assert( *pp_sout == NULL );
 395             if( var_CreateGetBool( p_input, "sout-keep" ) )
 396                 *pp_sout = input_DetachSout( p_input );
 397
 398             /* Destroy input */
 399             playlist_release_current_input( p_playlist );
 400
 401             pl_priv(p_playlist)->gc_date = mdate();
 402             pl_priv(p_playlist)->b_cant_sleep = true;
 403
 404             i_activity= var_GetInteger( p_playlist, "activity" );
 405             var_SetInteger( p_playlist, "activity", i_activity -
 406                             DEFAULT_INPUT_ACTIVITY );
 407
 408             goto check_input;
 409         }
 410         /* This input is dying, let it do */
 411         else if( pl_priv(p_playlist)->p_input->b_die )
 412         {
 413             PL_DEBUG( "dying input" );
 414             PL_UNLOCK;
 415             msleep( INTF_IDLE_SLEEP );
 416             PL_LOCK;
 417             goto check_input;
 418         }
 419         /* This input has finished, ask it to die ! */
 420         else if( pl_priv(p_playlist)->p_input->b_error
 421                   || pl_priv(p_playlist)->p_input->b_eof )
 422         {
 423             PL_DEBUG( "finished input" );
 424             input_StopThread( pl_priv(p_playlist)->p_input );
 425             /* No need to wait here, we'll wait in the p_input->b_die case */
 426             goto check_input;
 427         }
 428         else if( pl_priv(p_playlist)->p_input->i_state != INIT_S )
 429         {
 430             ObjectGarbageCollector( p_playlist, false );
 431         }
 432     }
 433     else
 434     {
 435         /* No input. Several cases
 436          *  - No request, running status -> start new item
 437          *  - No request, stopped status -> collect garbage
 438          *  - Request, running requested -> start new item
 439          *  - Request, stopped requested -> collect garbage
 440         */
 441         int i_status = pl_priv(p_playlist)->request.b_request ?
 442             pl_priv(p_playlist)->request.i_status : pl_priv(p_playlist)->status.i_status;
 443         if( i_status != PLAYLIST_STOPPED )
 444         {
 445             msg_Dbg( p_playlist, "starting new item" );
 446             p_item = playlist_NextItem( p_playlist );
 447
 448             if( p_item == NULL )
 449             {
 450                 msg_Dbg( p_playlist, "nothing to play" );
 451                 pl_priv(p_playlist)->status.i_status = PLAYLIST_STOPPED;
 452
 453                 if( b_playexit == true )
 454                 {
 455                     msg_Info( p_playlist, "end of playlist, exiting" );
 456                     vlc_object_kill( p_playlist->p_libvlc );
 457                 }
 458                 ObjectGarbageCollector( p_playlist, true );
 459                 return;
 460             }
 461             playlist_PlayItem( p_playlist, p_item );
 462             /* playlist_PlayItem loose input event, we need to recheck */
 463             goto check_input;
 464         }
 465         else
 466         {
 467             const bool b_gc_forced = pl_priv(p_playlist)->status.i_status != PLAYLIST_STOPPED;
 468
 469             pl_priv(p_playlist)->status.i_status = PLAYLIST_STOPPED;
 470
 471             /* Collect garbage */
 472             ObjectGarbageCollector( p_playlist, b_gc_forced );
 473         }
 474     }
 475 }
 476
 477 /**
 478  * Last loop
 479  *
 480  * The playlist is dying so do the last loop
 481  * \param p_playlist the playlist object
 482  * \return nothing
 483 */
 484 void playlist_LastLoop( playlist_t *p_playlist )
 485 {
 486     /* If there is an input, kill it */
 487     while( 1 )
 488     {
 489         PL_LOCK;
 490         if( pl_priv(p_playlist)->p_input == NULL )
 491         {
 492             PL_UNLOCK;
 493             break;
 494         }
 495
 496         if( pl_priv(p_playlist)->p_input->b_dead )
 497         {
 498             /* remove input */
 499             playlist_release_current_input( p_playlist );
 500
 501             /* sout-keep: no need to anything here.
 502              * The last input will destroy its sout, if any, by itself */
 503
 504             PL_UNLOCK;
 505             continue;
 506         }
 507         else if( pl_priv(p_playlist)->p_input->b_die )
 508         {
 509             /* This input is dying, leave it alone */
 510             ;
 511         }
 512         else if( pl_priv(p_playlist)->p_input->b_error || pl_priv(p_playlist)->p_input->b_eof )
 513         {
 514             input_StopThread( pl_priv(p_playlist)->p_input );
 515             PL_UNLOCK;
 516             continue;
 517         }
 518         else
 519         {
 520             pl_priv(p_playlist)->p_input->b_eof = 1;
 521         }
 522         PL_UNLOCK;
 523
 524         msleep( INTF_IDLE_SLEEP );
 525     }
 526
 527 #ifdef ENABLE_SOUT
 528     /* close the remaining sout-keep (if there was no input atm) */
 529     sout_instance_t *p_sout = pl_priv(p_playlist)->p_sout;
 530     if (p_sout)
 531         sout_DeleteInstance( p_sout );
 532 #endif
 533
 534     /* Core should have terminated all SDs before the playlist */
 535     /* TODO: It fails to do so when not playing anything -- Courmisch */
 536     playlist_ServicesDiscoveryKillAll( p_playlist );
 537     playlist_MLDump( p_playlist );
 538
 539     PL_LOCK;
 540
 541     /* Release the current node */
 542     set_current_status_node( p_playlist, NULL );
 543
 544     /* Release the current item */
 545     set_current_status_item( p_playlist, NULL );
 546
 547     FOREACH_ARRAY( playlist_item_t *p_del, p_playlist->all_items )
 548         free( p_del->pp_children );
 549         vlc_gc_decref( p_del->p_input );
 550         free( p_del );
 551     FOREACH_END();
 552     ARRAY_RESET( p_playlist->all_items );
 553     FOREACH_ARRAY( playlist_item_t *p_del, pl_priv(p_playlist)->items_to_delete )
 554         free( p_del->pp_children );
 555         vlc_gc_decref( p_del->p_input );
 556         free( p_del );
 557     FOREACH_END();
 558     ARRAY_RESET( pl_priv(p_playlist)->items_to_delete );
 559
 560     ARRAY_RESET( p_playlist->items );
 561     ARRAY_RESET( p_playlist->current );
 562
 563     PL_UNLOCK;
 564 }
 565
 566 /**
 567  * Preparse queue loop
 568  *
 569  * @param p_obj preparse structure
 570  * @return never
 571  */
 572 void *playlist_PreparseLoop( void *data )
 573 {
 574     playlist_preparse_t *p_preparse = data;
 575     playlist_t *p_playlist = &((playlist_private_t *)(((char *)p_preparse)
 576              - offsetof(playlist_private_t, preparse)))->public_data;
 577
 578     for( ;; )
 579     {
 580         input_item_t *p_current;
 581
 582         vlc_mutex_lock( &p_preparse->lock );
 583         mutex_cleanup_push( &p_preparse->lock );
 584
 585         while( p_preparse->i_waiting == 0 )
 586             vlc_cond_wait( &p_preparse->wait, &p_preparse->lock );
 587
 588         p_current = p_preparse->pp_waiting[0];
 589         REMOVE_ELEM( p_preparse->pp_waiting, p_preparse->i_waiting, 0 );
 590         vlc_cleanup_run( );
 591
 592         if( p_current )
 593         {
 594             int canc = vlc_savecancel ();
 595             PL_LOCK;
 596             if( p_current->i_type == ITEM_TYPE_FILE )
 597             {
 598                 stats_TimerStart( p_playlist, "Preparse run",
 599                                   STATS_TIMER_PREPARSE );
 600                 /* Do not preparse if it is already done (like by playing it) */
 601                 if( !input_item_IsPreparsed( p_current ) )
 602                 {
 603                     PL_UNLOCK;
 604                     input_Preparse( p_playlist, p_current );
 605                     PL_LOCK;
 606                 }
 607                 stats_TimerStop( p_playlist, STATS_TIMER_PREPARSE );
 608                 PL_UNLOCK;
 609                 input_item_SetPreparsed( p_current, true );
 610                 var_SetInteger( p_playlist, "item-change", p_current->i_id );
 611                 PL_LOCK;
 612             }
 613             /* If we haven't retrieved enough meta, add to secondary queue
 614              * which will run the "meta fetchers".
 615              * This only checks for meta, not for art
 616              * \todo don't do this for things we won't get meta for, like vids
 617              */
 618             char *psz_arturl = input_item_GetArtURL( p_current );
 619             char *psz_name = input_item_GetName( p_current );
 620             playlist_fetcher_t *p_fetcher = &pl_priv(p_playlist)->fetcher;
 621             if( p_fetcher->i_art_policy == ALBUM_ART_ALL &&
 622                 ( !psz_arturl || strncmp( psz_arturl, "file://", 7 ) ) )
 623             {
 624                 PL_DEBUG("meta ok for %s, need to fetch art", psz_name );
 625                 vlc_mutex_lock( &p_fetcher->lock );
 626                 INSERT_ELEM( p_fetcher->pp_waiting, p_fetcher->i_waiting,
 627                              p_fetcher->i_waiting, p_current);
 628                 vlc_cond_signal( &p_fetcher->wait );
 629                 vlc_mutex_unlock( &p_fetcher->lock );
 630             }
 631             else
 632             {
 633                 PL_DEBUG( "no fetch required for %s (art currently %s)",
 634                           psz_name, psz_arturl );
 635                 vlc_gc_decref( p_current );
 636             }
 637             free( psz_name );
 638             free( psz_arturl );
 639             PL_UNLOCK;
 640             vlc_restorecancel( canc );
 641         }
 642
 643         int i_activity = var_GetInteger( p_playlist, "activity" );
 644         if( i_activity < 0 ) i_activity = 0;
 645         /* Sleep at least 1ms */
 646         msleep( (i_activity+1) * 1000 );
 647     }
 648
 649     assert( 0 );
 650     return NULL;
 651 }
 652
 653 /**
 654  * Fetcher loop
 655  *
 656  * \return never
 657  */
 658 void *playlist_FetcherLoop( void *data )
 659 {
 660     playlist_fetcher_t *p_fetcher = data;
 661     playlist_t *p_playlist = &((playlist_private_t *)(((char *)p_fetcher)
 662              - offsetof(playlist_private_t, fetcher)))->public_data;
 663
 664     for( ;; )
 665     {
 666         input_item_t *p_item;
 667
 668         vlc_mutex_lock( &p_fetcher->lock );
 669         mutex_cleanup_push( &p_fetcher->lock );
 670
 671         while( p_fetcher->i_waiting == 0 )
 672             vlc_cond_wait( &p_fetcher->wait, &p_fetcher->lock );
 673
 674         p_item = p_fetcher->pp_waiting[0];
 675         REMOVE_ELEM( p_fetcher->pp_waiting, p_fetcher->i_waiting, 0 );
 676         vlc_cleanup_run( );
 677
 678         int canc = vlc_savecancel();
 679         if( p_item )
 680         {
 681             int i_ret;
 682
 683             /* Check if it is not yet preparsed and if so wait for it
 684              * (at most 0.5s)
 685              * (This can happen if we fetch art on play)
 686              * FIXME this doesn't work if we need to fetch meta before art...
 687              */
 688             for( i_ret = 0; i_ret < 10 && !input_item_IsPreparsed( p_item ); i_ret++ )
 689             {
 690                 bool b_break;
 691                 PL_LOCK;
 692                 b_break = ( !pl_priv(p_playlist)->p_input || input_GetItem(pl_priv(p_playlist)->p_input) != p_item  ||
 693                             pl_priv(p_playlist)->p_input->b_die || pl_priv(p_playlist)->p_input->b_eof || pl_priv(p_playlist)->p_input->b_error );
 694                 PL_UNLOCK;
 695                 if( b_break )
 696                     break;
 697                 msleep( 50000 );
 698             }
 699
 700             i_ret = input_ArtFind( p_playlist, p_item );
 701             if( i_ret == 1 )
 702             {
 703                 PL_DEBUG( "downloading art for %s", p_item->psz_name );
 704                 if( input_DownloadAndCacheArt( p_playlist, p_item ) )
 705                     input_item_SetArtNotFound( p_item, true );
 706                 else {
 707                     input_item_SetArtFetched( p_item, true );
 708                     var_SetInteger( p_playlist, "item-change",
 709                                     p_item->i_id );
 710                 }
 711             }
 712             else if( i_ret == 0 ) /* Was in cache */
 713             {
 714                 PL_DEBUG( "found art for %s in cache", p_item->psz_name );
 715                 input_item_SetArtFetched( p_item, true );
 716                 var_SetInteger( p_playlist, "item-change", p_item->i_id );
 717             }
 718             else
 719             {
 720                 PL_DEBUG( "art not found for %s", p_item->psz_name );
 721                 input_item_SetArtNotFound( p_item, true );
 722             }
 723             vlc_gc_decref( p_item );
 724         }
 725         vlc_restorecancel( canc );
 726
 727         int i_activity = var_GetInteger( p_playlist, "activity" );
 728         if( i_activity < 0 ) i_activity = 0;
 729         /* Sleep at least 1ms */
 730         msleep( (i_activity+1) * 1000 );
 731     }
 732
 733     assert( 0 );
 734     return NULL;
 735 }
 736
 737 static void VariablesInit( playlist_t *p_playlist )
 738 {
 739     vlc_value_t val;
 740     /* These variables control updates */
 741     var_Create( p_playlist, "intf-change", VLC_VAR_BOOL );
 742     val.b_bool = true;
 743     var_Set( p_playlist, "intf-change", val );
 744
 745     var_Create( p_playlist, "item-change", VLC_VAR_INTEGER );
 746     val.i_int = -1;
 747     var_Set( p_playlist, "item-change", val );
 748
 749     var_Create( p_playlist, "item-deleted", VLC_VAR_INTEGER );
 750     val.i_int = -1;
 751     var_Set( p_playlist, "item-deleted", val );
 752
 753     var_Create( p_playlist, "item-append", VLC_VAR_ADDRESS );
 754
 755     var_Create( p_playlist, "playlist-current", VLC_VAR_INTEGER );
 756     val.i_int = -1;
 757     var_Set( p_playlist, "playlist-current", val );
 758
 759     var_Create( p_playlist, "activity", VLC_VAR_INTEGER );
 760     var_SetInteger( p_playlist, "activity", 0 );
 761
 762     /* Variables to control playback */
 763     var_CreateGetBool( p_playlist, "play-and-stop" );
 764     var_CreateGetBool( p_playlist, "play-and-exit" );
 765     var_CreateGetBool( p_playlist, "random" );
 766     var_CreateGetBool( p_playlist, "repeat" );
 767     var_CreateGetBool( p_playlist, "loop" );
 768
 769     var_AddCallback( p_playlist, "random", RandomCallback, NULL );
 770 }
 771
 772 int playlist_CurrentId( playlist_t * p_playlist )
 773 {
 774     return pl_priv(p_playlist)->status.p_item->i_id;
 775 }
 776
 777 bool playlist_IsPlaying( playlist_t * p_playlist )
 778 {
 779     return ( pl_priv(p_playlist)->status.i_status == PLAYLIST_RUNNING &&
 780             !(pl_priv(p_playlist)->request.b_request && pl_priv(p_playlist)->request.i_status == PLAYLIST_STOPPED) );
 781 }
 782
 783 playlist_item_t * playlist_CurrentPlayingItem( playlist_t * p_playlist )
 784 {
 785     return pl_priv(p_playlist)->status.p_item;
 786 }
 787
 788 int playlist_Status( playlist_t * p_playlist )
 789 {
 790     return pl_priv(p_playlist)->status.i_status;
 791 }