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     pl_priv((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     pl_priv(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     pl_priv(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 int InputEvent( vlc_object_t *p_this, char const *psz_cmd,
 228                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 229 {
 230     VLC_UNUSED(p_this); VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
 231     playlist_t *p_playlist = p_data;
 232
 233     if( newval.i_int == INPUT_EVENT_STATE )
 234     {
 235         playlist_Signal( p_playlist );
 236     }
 237     else if( newval.i_int == INPUT_EVENT_ES )
 238     {
 239         PL_LOCK;
 240         pl_priv(p_playlist)->gc_date = mdate();
 241         vlc_object_signal_unlocked( p_playlist );
 242         PL_UNLOCK;
 243     }
 244     return VLC_SUCCESS;
 245 }
 246
 247 /* Internals */
 248 void playlist_release_current_input( playlist_t * p_playlist )
 249 {
 250     PL_ASSERT_LOCKED;
 251
 252     if( !pl_priv(p_playlist)->p_input ) return;
 253
 254     input_thread_t * p_input = pl_priv(p_playlist)->p_input;
 255
 256     var_DelCallback( p_input, "intf-event", InputEvent, p_playlist );
 257     pl_priv(p_playlist)->p_input = NULL;
 258
 259     /* Release the playlist lock, because we may get stuck
 260      * in vlc_object_release() for some time. */
 261     PL_UNLOCK;
 262     vlc_thread_join( p_input );
 263     vlc_object_release( p_input );
 264     PL_LOCK;
 265 }
 266
 267 void playlist_set_current_input(
 268     playlist_t * p_playlist, input_thread_t * p_input )
 269 {
 270     PL_ASSERT_LOCKED;
 271
 272     playlist_release_current_input( p_playlist );
 273
 274     if( p_input )
 275     {
 276         vlc_object_hold( p_input );
 277         pl_priv(p_playlist)->p_input = p_input;
 278
 279         var_AddCallback( p_input, "intf-event", InputEvent, p_playlist );
 280     }
 281 }
 282
 283 /** Get current playing input.
 284  */
 285 input_thread_t * playlist_CurrentInput( playlist_t * p_playlist )
 286 {
 287     input_thread_t * p_input;
 288     PL_LOCK;
 289     p_input = pl_priv(p_playlist)->p_input;
 290     if( p_input ) vlc_object_hold( p_input );
 291     PL_UNLOCK;
 292     return p_input;
 293 }
 294
 295 /**
 296  * @}
 297  */
 298
 299 /** Accessor for status item and status nodes.
 300  */
 301 playlist_item_t * get_current_status_item( playlist_t * p_playlist )
 302 {
 303     PL_ASSERT_LOCKED;
 304
 305     return pl_priv(p_playlist)->status.p_item;
 306 }
 307
 308 playlist_item_t * get_current_status_node( playlist_t * p_playlist )
 309 {
 310     PL_ASSERT_LOCKED;
 311
 312     return pl_priv(p_playlist)->status.p_node;
 313 }
 314
 315 void set_current_status_item( playlist_t * p_playlist,
 316     playlist_item_t * p_item )
 317 {
 318     PL_ASSERT_LOCKED;
 319
 320     if( pl_priv(p_playlist)->status.p_item &&
 321         pl_priv(p_playlist)->status.p_item->i_flags & PLAYLIST_REMOVE_FLAG &&
 322         pl_priv(p_playlist)->status.p_item != p_item )
 323     {
 324         /* It's unsafe given current design to delete a playlist item :(
 325         playlist_ItemDelete( pl_priv(p_playlist)->status.p_item ); */
 326     }
 327     pl_priv(p_playlist)->status.p_item = p_item;
 328 }
 329
 330 void set_current_status_node( playlist_t * p_playlist,
 331     playlist_item_t * p_node )
 332 {
 333     PL_ASSERT_LOCKED;
 334
 335     if( pl_priv(p_playlist)->status.p_node &&
 336         pl_priv(p_playlist)->status.p_node->i_flags & PLAYLIST_REMOVE_FLAG &&
 337         pl_priv(p_playlist)->status.p_node != p_node )
 338     {
 339         /* It's unsafe given current design to delete a playlist item :(
 340         playlist_ItemDelete( pl_priv(p_playlist)->status.p_node ); */
 341     }
 342     pl_priv(p_playlist)->status.p_node = p_node;
 343 }
 344
 345 /**
 346  * Main loop
 347  *
 348  * Main loop for the playlist. It should be entered with the
 349  * playlist lock (otherwise input event may be lost)
 350  * \param p_playlist the playlist object
 351  * \return nothing
 352  */
 353 void playlist_MainLoop( playlist_t *p_playlist )
 354 {
 355     playlist_item_t *p_item = NULL;
 356     bool b_playexit = var_GetBool( p_playlist, "play-and-exit" );
 357
 358     PL_ASSERT_LOCKED;
 359
 360     if( pl_priv(p_playlist)->b_reset_currently_playing &&
 361         mdate() - pl_priv(p_playlist)->last_rebuild_date > 30000 ) // 30 ms
 362     {
 363         ResetCurrentlyPlaying( p_playlist, var_GetBool( p_playlist, "random" ),
 364                                get_current_status_item( p_playlist ) );
 365         pl_priv(p_playlist)->last_rebuild_date = mdate();
 366     }
 367
 368 check_input:
 369     /* If there is an input, check that it doesn't need to die. */
 370     if( pl_priv(p_playlist)->p_input )
 371     {
 372         if( pl_priv(p_playlist)->request.b_request && !pl_priv(p_playlist)->p_input->b_die )
 373         {
 374             PL_DEBUG( "incoming request - stopping current input" );
 375             input_StopThread( pl_priv(p_playlist)->p_input );
 376         }
 377
 378         /* This input is dead. Remove it ! */
 379         if( pl_priv(p_playlist)->p_input->b_dead )
 380         {
 381             int i_activity;
 382             input_thread_t *p_input;
 383             sout_instance_t **pp_sout = &pl_priv(p_playlist)->p_sout;
 384
 385             PL_DEBUG( "dead input" );
 386
 387             p_input = pl_priv(p_playlist)->p_input;
 388
 389             assert( *pp_sout == NULL );
 390             if( var_CreateGetBool( p_input, "sout-keep" ) )
 391                 *pp_sout = input_DetachSout( p_input );
 392
 393             /* Destroy input */
 394             playlist_release_current_input( p_playlist );
 395
 396             pl_priv(p_playlist)->gc_date = mdate();
 397             pl_priv(p_playlist)->b_cant_sleep = true;
 398
 399             i_activity= var_GetInteger( p_playlist, "activity" );
 400             var_SetInteger( p_playlist, "activity", i_activity -
 401                             DEFAULT_INPUT_ACTIVITY );
 402
 403             goto check_input;
 404         }
 405         /* This input is dying, let it do */
 406         else if( pl_priv(p_playlist)->p_input->b_die )
 407         {
 408             PL_DEBUG( "dying input" );
 409             PL_UNLOCK;
 410             msleep( INTF_IDLE_SLEEP );
 411             PL_LOCK;
 412             goto check_input;
 413         }
 414         /* This input has finished, ask it to die ! */
 415         else if( pl_priv(p_playlist)->p_input->b_error
 416                   || pl_priv(p_playlist)->p_input->b_eof )
 417         {
 418             PL_DEBUG( "finished input" );
 419             input_StopThread( pl_priv(p_playlist)->p_input );
 420             /* No need to wait here, we'll wait in the p_input->b_die case */
 421             goto check_input;
 422         }
 423         else if( pl_priv(p_playlist)->p_input->i_state != INIT_S )
 424         {
 425             ObjectGarbageCollector( p_playlist, false );
 426         }
 427     }
 428     else
 429     {
 430         /* No input. Several cases
 431          *  - No request, running status -> start new item
 432          *  - No request, stopped status -> collect garbage
 433          *  - Request, running requested -> start new item
 434          *  - Request, stopped requested -> collect garbage
 435         */
 436         int i_status = pl_priv(p_playlist)->request.b_request ?
 437             pl_priv(p_playlist)->request.i_status : pl_priv(p_playlist)->status.i_status;
 438         if( i_status != PLAYLIST_STOPPED )
 439         {
 440             msg_Dbg( p_playlist, "starting new item" );
 441             p_item = playlist_NextItem( p_playlist );
 442
 443             if( p_item == NULL )
 444             {
 445                 msg_Dbg( p_playlist, "nothing to play" );
 446                 pl_priv(p_playlist)->status.i_status = PLAYLIST_STOPPED;
 447
 448                 if( b_playexit == true )
 449                 {
 450                     msg_Info( p_playlist, "end of playlist, exiting" );
 451                     vlc_object_kill( p_playlist->p_libvlc );
 452                 }
 453                 ObjectGarbageCollector( p_playlist, true );
 454                 return;
 455             }
 456             playlist_PlayItem( p_playlist, p_item );
 457             /* playlist_PlayItem loose input event, we need to recheck */
 458             goto check_input;
 459         }
 460         else
 461         {
 462             const bool b_gc_forced = pl_priv(p_playlist)->status.i_status != PLAYLIST_STOPPED;
 463
 464             pl_priv(p_playlist)->status.i_status = PLAYLIST_STOPPED;
 465
 466             /* Collect garbage */
 467             ObjectGarbageCollector( p_playlist, b_gc_forced );
 468         }
 469     }
 470 }
 471
 472 /**
 473  * Last loop
 474  *
 475  * The playlist is dying so do the last loop
 476  * \param p_playlist the playlist object
 477  * \return nothing
 478 */
 479 void playlist_LastLoop( playlist_t *p_playlist )
 480 {
 481     /* If there is an input, kill it */
 482     while( 1 )
 483     {
 484         PL_LOCK;
 485         if( pl_priv(p_playlist)->p_input == NULL )
 486         {
 487             PL_UNLOCK;
 488             break;
 489         }
 490
 491         if( pl_priv(p_playlist)->p_input->b_dead )
 492         {
 493             /* remove input */
 494             playlist_release_current_input( p_playlist );
 495
 496             /* sout-keep: no need to anything here.
 497              * The last input will destroy its sout, if any, by itself */
 498
 499             PL_UNLOCK;
 500             continue;
 501         }
 502         else if( pl_priv(p_playlist)->p_input->b_die )
 503         {
 504             /* This input is dying, leave it alone */
 505             ;
 506         }
 507         else if( pl_priv(p_playlist)->p_input->b_error || pl_priv(p_playlist)->p_input->b_eof )
 508         {
 509             input_StopThread( pl_priv(p_playlist)->p_input );
 510             PL_UNLOCK;
 511             continue;
 512         }
 513         else
 514         {
 515             pl_priv(p_playlist)->p_input->b_eof = 1;
 516         }
 517         PL_UNLOCK;
 518
 519         msleep( INTF_IDLE_SLEEP );
 520     }
 521
 522 #ifdef ENABLE_SOUT
 523     /* close the remaining sout-keep (if there was no input atm) */
 524     sout_instance_t *p_sout = pl_priv(p_playlist)->p_sout;
 525     if (p_sout)
 526         sout_DeleteInstance( p_sout );
 527 #endif
 528
 529     /* Core should have terminated all SDs before the playlist */
 530     /* TODO: It fails to do so when not playing anything -- Courmisch */
 531     playlist_ServicesDiscoveryKillAll( p_playlist );
 532     playlist_MLDump( p_playlist );
 533
 534     PL_LOCK;
 535
 536     /* Release the current node */
 537     set_current_status_node( p_playlist, NULL );
 538
 539     /* Release the current item */
 540     set_current_status_item( p_playlist, NULL );
 541
 542     FOREACH_ARRAY( playlist_item_t *p_del, p_playlist->all_items )
 543         free( p_del->pp_children );
 544         vlc_gc_decref( p_del->p_input );
 545         free( p_del );
 546     FOREACH_END();
 547     ARRAY_RESET( p_playlist->all_items );
 548     FOREACH_ARRAY( playlist_item_t *p_del, pl_priv(p_playlist)->items_to_delete )
 549         free( p_del->pp_children );
 550         vlc_gc_decref( p_del->p_input );
 551         free( p_del );
 552     FOREACH_END();
 553     ARRAY_RESET( pl_priv(p_playlist)->items_to_delete );
 554
 555     ARRAY_RESET( p_playlist->items );
 556     ARRAY_RESET( p_playlist->current );
 557
 558     PL_UNLOCK;
 559 }
 560
 561 /**
 562  * Preparse queue loop
 563  *
 564  * @param p_obj preparse structure
 565  * @return never
 566  */
 567 void *playlist_PreparseLoop( void *data )
 568 {
 569     playlist_preparse_t *p_preparse = data;
 570     playlist_t *p_playlist = &((playlist_private_t *)(((char *)p_preparse)
 571              - offsetof(playlist_private_t, preparse)))->public_data;
 572
 573     for( ;; )
 574     {
 575         input_item_t *p_current;
 576
 577         vlc_mutex_lock( &p_preparse->lock );
 578         mutex_cleanup_push( &p_preparse->lock );
 579
 580         while( p_preparse->i_waiting == 0 )
 581             vlc_cond_wait( &p_preparse->wait, &p_preparse->lock );
 582
 583         p_current = p_preparse->pp_waiting[0];
 584         REMOVE_ELEM( p_preparse->pp_waiting, p_preparse->i_waiting, 0 );
 585         vlc_cleanup_run( );
 586
 587         if( p_current )
 588         {
 589             int canc = vlc_savecancel ();
 590             PL_LOCK;
 591             if( p_current->i_type == ITEM_TYPE_FILE )
 592             {
 593                 stats_TimerStart( p_playlist, "Preparse run",
 594                                   STATS_TIMER_PREPARSE );
 595                 /* Do not preparse if it is already done (like by playing it) */
 596                 if( !input_item_IsPreparsed( p_current ) )
 597                 {
 598                     PL_UNLOCK;
 599                     input_Preparse( p_playlist, p_current );
 600                     PL_LOCK;
 601                 }
 602                 stats_TimerStop( p_playlist, STATS_TIMER_PREPARSE );
 603                 PL_UNLOCK;
 604                 input_item_SetPreparsed( p_current, true );
 605                 var_SetInteger( p_playlist, "item-change", p_current->i_id );
 606                 PL_LOCK;
 607             }
 608             /* If we haven't retrieved enough meta, add to secondary queue
 609              * which will run the "meta fetchers".
 610              * This only checks for meta, not for art
 611              * \todo don't do this for things we won't get meta for, like vids
 612              */
 613             char *psz_arturl = input_item_GetArtURL( p_current );
 614             char *psz_name = input_item_GetName( p_current );
 615             playlist_fetcher_t *p_fetcher = &pl_priv(p_playlist)->fetcher;
 616             if( p_fetcher->i_art_policy == ALBUM_ART_ALL &&
 617                 ( !psz_arturl || strncmp( psz_arturl, "file://", 7 ) ) )
 618             {
 619                 PL_DEBUG("meta ok for %s, need to fetch art", psz_name );
 620                 vlc_mutex_lock( &p_fetcher->lock );
 621                 INSERT_ELEM( p_fetcher->pp_waiting, p_fetcher->i_waiting,
 622                              p_fetcher->i_waiting, p_current);
 623                 vlc_cond_signal( &p_fetcher->wait );
 624                 vlc_mutex_unlock( &p_fetcher->lock );
 625             }
 626             else
 627             {
 628                 PL_DEBUG( "no fetch required for %s (art currently %s)",
 629                           psz_name, psz_arturl );
 630                 vlc_gc_decref( p_current );
 631             }
 632             free( psz_name );
 633             free( psz_arturl );
 634             PL_UNLOCK;
 635             vlc_restorecancel( canc );
 636         }
 637
 638         int i_activity = var_GetInteger( p_playlist, "activity" );
 639         if( i_activity < 0 ) i_activity = 0;
 640         /* Sleep at least 1ms */
 641         msleep( (i_activity+1) * 1000 );
 642     }
 643
 644     assert( 0 );
 645     return NULL;
 646 }
 647
 648 /**
 649  * Fetcher loop
 650  *
 651  * \return never
 652  */
 653 void *playlist_FetcherLoop( void *data )
 654 {
 655     playlist_fetcher_t *p_fetcher = data;
 656     playlist_t *p_playlist = &((playlist_private_t *)(((char *)p_fetcher)
 657              - offsetof(playlist_private_t, fetcher)))->public_data;
 658
 659     for( ;; )
 660     {
 661         input_item_t *p_item;
 662
 663         vlc_mutex_lock( &p_fetcher->lock );
 664         mutex_cleanup_push( &p_fetcher->lock );
 665
 666         while( p_fetcher->i_waiting == 0 )
 667             vlc_cond_wait( &p_fetcher->wait, &p_fetcher->lock );
 668
 669         p_item = p_fetcher->pp_waiting[0];
 670         REMOVE_ELEM( p_fetcher->pp_waiting, p_fetcher->i_waiting, 0 );
 671         vlc_cleanup_run( );
 672
 673         int canc = vlc_savecancel();
 674         if( p_item )
 675         {
 676             int i_ret;
 677
 678             /* Check if it is not yet preparsed and if so wait for it
 679              * (at most 0.5s)
 680              * (This can happen if we fetch art on play)
 681              * FIXME this doesn't work if we need to fetch meta before art...
 682              */
 683             for( i_ret = 0; i_ret < 10 && !input_item_IsPreparsed( p_item ); i_ret++ )
 684             {
 685                 bool b_break;
 686                 PL_LOCK;
 687                 b_break = ( !pl_priv(p_playlist)->p_input || input_GetItem(pl_priv(p_playlist)->p_input) != p_item  ||
 688                             pl_priv(p_playlist)->p_input->b_die || pl_priv(p_playlist)->p_input->b_eof || pl_priv(p_playlist)->p_input->b_error );
 689                 PL_UNLOCK;
 690                 if( b_break )
 691                     break;
 692                 msleep( 50000 );
 693             }
 694
 695             i_ret = input_ArtFind( p_playlist, p_item );
 696             if( i_ret == 1 )
 697             {
 698                 PL_DEBUG( "downloading art for %s", p_item->psz_name );
 699                 if( input_DownloadAndCacheArt( p_playlist, p_item ) )
 700                     input_item_SetArtNotFound( p_item, true );
 701                 else {
 702                     input_item_SetArtFetched( p_item, true );
 703                     var_SetInteger( p_playlist, "item-change",
 704                                     p_item->i_id );
 705                 }
 706             }
 707             else if( i_ret == 0 ) /* Was in cache */
 708             {
 709                 PL_DEBUG( "found art for %s in cache", p_item->psz_name );
 710                 input_item_SetArtFetched( p_item, true );
 711                 var_SetInteger( p_playlist, "item-change", p_item->i_id );
 712             }
 713             else
 714             {
 715                 PL_DEBUG( "art not found for %s", p_item->psz_name );
 716                 input_item_SetArtNotFound( p_item, true );
 717             }
 718             vlc_gc_decref( p_item );
 719         }
 720         vlc_restorecancel( canc );
 721
 722         int i_activity = var_GetInteger( p_playlist, "activity" );
 723         if( i_activity < 0 ) i_activity = 0;
 724         /* Sleep at least 1ms */
 725         msleep( (i_activity+1) * 1000 );
 726     }
 727
 728     assert( 0 );
 729     return NULL;
 730 }
 731
 732 static void VariablesInit( playlist_t *p_playlist )
 733 {
 734     vlc_value_t val;
 735     /* These variables control updates */
 736     var_Create( p_playlist, "intf-change", VLC_VAR_BOOL );
 737     val.b_bool = true;
 738     var_Set( p_playlist, "intf-change", val );
 739
 740     var_Create( p_playlist, "item-change", VLC_VAR_INTEGER );
 741     val.i_int = -1;
 742     var_Set( p_playlist, "item-change", val );
 743
 744     var_Create( p_playlist, "item-deleted", VLC_VAR_INTEGER );
 745     val.i_int = -1;
 746     var_Set( p_playlist, "item-deleted", val );
 747
 748     var_Create( p_playlist, "item-append", VLC_VAR_ADDRESS );
 749
 750     var_Create( p_playlist, "playlist-current", VLC_VAR_INTEGER );
 751     val.i_int = -1;
 752     var_Set( p_playlist, "playlist-current", val );
 753
 754     var_Create( p_playlist, "activity", VLC_VAR_INTEGER );
 755     var_SetInteger( p_playlist, "activity", 0 );
 756
 757     /* Variables to control playback */
 758     var_Create( p_playlist, "play-and-stop", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 759     var_Create( p_playlist, "play-and-exit", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 760     var_Create( p_playlist, "random", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 761     var_Create( p_playlist, "repeat", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 762     var_Create( p_playlist, "loop", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 763
 764     var_AddCallback( p_playlist, "random", RandomCallback, NULL );
 765 }
 766
 767 int playlist_CurrentId( playlist_t * p_playlist )
 768 {
 769     return pl_priv(p_playlist)->status.p_item->i_id;
 770 }
 771
 772 bool playlist_IsPlaying( playlist_t * p_playlist )
 773 {
 774     return ( pl_priv(p_playlist)->status.i_status == PLAYLIST_RUNNING &&
 775             !(pl_priv(p_playlist)->request.b_request && pl_priv(p_playlist)->request.i_status == PLAYLIST_STOPPED) );
 776 }
 777
 778 playlist_item_t * playlist_CurrentPlayingItem( playlist_t * p_playlist )
 779 {
 780     return pl_priv(p_playlist)->status.p_item;
 781 }
 782
 783 int playlist_Status( playlist_t * p_playlist )
 784 {
 785     return pl_priv(p_playlist)->status.i_status;
 786 }