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) 1999-2004 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/input.h>
  29 #include "vlc_playlist.h"
  30 #include "vlc_interaction.h"
  31 #include "playlist_internal.h"
  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     ((playlist_t*)p_this)->b_reset_currently_playing = VLC_TRUE;
  42     playlist_Signal( ((playlist_t*)p_this) );
  43     return VLC_SUCCESS;
  44 }
  45
  46 /**
  47  * Create playlist
  48  *
  49  * Create a playlist structure.
  50  * \param p_parent the vlc object that is to be the parent of this playlist
  51  * \return a pointer to the created playlist, or NULL on error
  52  */
  53 playlist_t * playlist_Create( vlc_object_t *p_parent )
  54 {
  55     playlist_t *p_playlist;
  56     vlc_bool_t b_save;
  57     int i_tree;
  58
  59     /* Allocate structure */
  60     p_playlist = vlc_object_create( p_parent, VLC_OBJECT_PLAYLIST );
  61     if( !p_playlist )
  62     {
  63         msg_Err( p_parent, "out of memory" );
  64         return NULL;
  65     }
  66     p_parent->p_libvlc->p_playlist = p_playlist;
  67
  68     VariablesInit( p_playlist );
  69
  70     /* Initialise data structures */
  71     vlc_mutex_init( p_playlist, &p_playlist->gc_lock );
  72     p_playlist->i_last_playlist_id = 0;
  73     p_playlist->i_last_input_id = 0;
  74     p_playlist->p_input = NULL;
  75
  76     p_playlist->gc_date = 0;
  77     p_playlist->b_cant_sleep = VLC_FALSE;
  78
  79     ARRAY_INIT( p_playlist->items );
  80     ARRAY_INIT( p_playlist->all_items );
  81     ARRAY_INIT( p_playlist->input_items );
  82     ARRAY_INIT( p_playlist->current );
  83
  84     p_playlist->i_current_index = 0;
  85     p_playlist->b_reset_currently_playing = VLC_TRUE;
  86     p_playlist->last_rebuild_date = 0;
  87
  88     i_tree = var_CreateGetBool( p_playlist, "playlist-tree" );
  89     p_playlist->b_always_tree = (i_tree == 1);
  90     p_playlist->b_never_tree = (i_tree == 2);
  91
  92     p_playlist->b_doing_ml = VLC_FALSE;
  93
  94     p_playlist->b_auto_preparse =
  95                         var_CreateGetBool( p_playlist, "auto-preparse") ;
  96
  97     p_playlist->p_root_category = playlist_NodeCreate( p_playlist, NULL, NULL);
  98     p_playlist->p_root_onelevel = playlist_NodeCreate( p_playlist, NULL, NULL);
  99
 100     if( !p_playlist->p_root_category || !p_playlist->p_root_onelevel )
 101         return NULL;
 102
 103     /* Create playlist and media library */
 104     p_playlist->p_local_category = playlist_NodeCreate( p_playlist,
 105                                  _( "Playlist" ),p_playlist->p_root_category );
 106     p_playlist->p_local_onelevel =  playlist_NodeCreate( p_playlist,
 107                                 _( "Playlist" ), p_playlist->p_root_onelevel );
 108     p_playlist->p_local_category->i_flags |= PLAYLIST_RO_FLAG;
 109     p_playlist->p_local_onelevel->i_flags |= PLAYLIST_RO_FLAG;
 110
 111     if( !p_playlist->p_local_category || !p_playlist->p_local_onelevel ||
 112         !p_playlist->p_local_category->p_input ||
 113         !p_playlist->p_local_onelevel->p_input )
 114         return NULL;
 115
 116     /* Link the nodes together. Todo: actually create them from the same input*/
 117     p_playlist->p_local_onelevel->p_input->i_id =
 118         p_playlist->p_local_category->p_input->i_id;
 119
 120     if( config_GetInt( p_playlist, "media-library") )
 121     {
 122         p_playlist->p_ml_category =   playlist_NodeCreate( p_playlist,
 123                            _( "Media Library" ), p_playlist->p_root_category );
 124         p_playlist->p_ml_onelevel =  playlist_NodeCreate( p_playlist,
 125                            _( "Media Library" ), p_playlist->p_root_onelevel );
 126
 127         if(!p_playlist->p_ml_category || !p_playlist->p_ml_onelevel)
 128             return NULL;
 129
 130         p_playlist->p_ml_category->i_flags |= PLAYLIST_RO_FLAG;
 131         p_playlist->p_ml_onelevel->i_flags |= PLAYLIST_RO_FLAG;
 132         p_playlist->p_ml_onelevel->p_input->i_id =
 133              p_playlist->p_ml_category->p_input->i_id;
 134
 135     }
 136     else
 137     {
 138         p_playlist->p_ml_category = p_playlist->p_ml_onelevel = NULL;
 139     }
 140
 141     /* Initial status */
 142     p_playlist->status.p_item = NULL;
 143     p_playlist->status.p_node = p_playlist->p_local_onelevel;
 144     p_playlist->request.b_request = VLC_FALSE;
 145     p_playlist->status.i_status = PLAYLIST_STOPPED;
 146
 147     p_playlist->i_sort = SORT_ID;
 148     p_playlist->i_order = ORDER_NORMAL;
 149
 150     vlc_object_attach( p_playlist, p_parent );
 151     b_save = p_playlist->b_auto_preparse;
 152     p_playlist->b_auto_preparse = VLC_FALSE;
 153     playlist_MLLoad( p_playlist );
 154     p_playlist->b_auto_preparse = VLC_TRUE;
 155     return p_playlist;
 156 }
 157
 158 void playlist_Destroy( playlist_t *p_playlist )
 159 {
 160     while( p_playlist->i_sds )
 161     {
 162         playlist_ServicesDiscoveryRemove( p_playlist,
 163                                           p_playlist->pp_sds[0]->psz_module );
 164     }
 165
 166     playlist_MLDump( p_playlist );
 167
 168     vlc_thread_join( p_playlist->p_preparse );
 169     vlc_thread_join( p_playlist->p_fetcher );
 170     vlc_thread_join( p_playlist );
 171
 172     vlc_object_detach( p_playlist->p_preparse );
 173     vlc_object_detach( p_playlist->p_fetcher );
 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-popmenu" );
 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     PL_LOCK;
 188     /* Go through all items, and simply free everything without caring
 189      * about the tree structure. Do not decref, it will be done by doing
 190      * the same thing on the input items array */
 191     FOREACH_ARRAY( playlist_item_t *p_del, p_playlist->all_items )
 192         free( p_del->pp_children );
 193         free( p_del );
 194     FOREACH_END();
 195     ARRAY_RESET( p_playlist->all_items );
 196
 197     FOREACH_ARRAY( input_item_t *p_del, p_playlist->input_items )
 198         input_ItemClean( p_del );
 199         free( p_del );
 200     FOREACH_END();
 201     ARRAY_RESET( p_playlist->input_items );
 202
 203     ARRAY_RESET( p_playlist->items );
 204     ARRAY_RESET( p_playlist->current );
 205
 206     PL_UNLOCK;
 207
 208     if( p_playlist->p_stats )
 209         free( p_playlist->p_stats );
 210
 211     vlc_mutex_destroy( &p_playlist->gc_lock );
 212     vlc_object_destroy( p_playlist->p_preparse );
 213     vlc_object_destroy( p_playlist->p_fetcher );
 214     vlc_object_detach( p_playlist );
 215     vlc_object_destroy( p_playlist );
 216 }
 217
 218 /* Destroy remaining objects */
 219 static void ObjectGarbageCollector( playlist_t *p_playlist )
 220 {
 221     vlc_object_t *p_obj;
 222
 223     if( mdate() - p_playlist->gc_date < 1000000 )
 224     {
 225         p_playlist->b_cant_sleep = VLC_TRUE;
 226         return;
 227     }
 228     else if( p_playlist->gc_date == 0 )
 229         return;
 230
 231     vlc_mutex_lock( &p_playlist->gc_lock );
 232     while( ( p_obj = vlc_object_find( p_playlist, VLC_OBJECT_VOUT,
 233                                                   FIND_CHILD ) ) )
 234     {
 235         if( p_obj->p_parent != (vlc_object_t*)p_playlist )
 236         {
 237             vlc_object_release( p_obj );
 238             break;
 239         }
 240         msg_Dbg( p_playlist, "garbage collector destroying 1 vout" );
 241         vlc_object_detach( p_obj );
 242         vlc_object_release( p_obj );
 243         vout_Destroy( (vout_thread_t *)p_obj );
 244     }
 245     while( ( p_obj = vlc_object_find( p_playlist, VLC_OBJECT_SOUT,
 246                                                   FIND_CHILD ) ) )
 247     {
 248         if( p_obj->p_parent != (vlc_object_t*)p_playlist )
 249         {
 250             vlc_object_release( p_obj );
 251             break;
 252         }
 253         vlc_object_release( p_obj );
 254         sout_DeleteInstance( (sout_instance_t*)p_obj );
 255     }
 256     p_playlist->b_cant_sleep = VLC_FALSE;
 257     vlc_mutex_unlock( &p_playlist->gc_lock );
 258 }
 259
 260 /** Main loop for the playlist */
 261 void playlist_MainLoop( playlist_t *p_playlist )
 262 {
 263     playlist_item_t *p_item = NULL;
 264     vlc_bool_t b_playexit = var_GetBool( p_playlist, "play-and-exit" );
 265     PL_LOCK;
 266
 267     if( p_playlist->b_reset_currently_playing &&
 268         mdate() - p_playlist->last_rebuild_date > 30000 ) // 30 ms
 269     {
 270         ResetCurrentlyPlaying( p_playlist, var_GetBool( p_playlist, "random"),
 271                              p_playlist->status.p_item );
 272         p_playlist->last_rebuild_date = mdate();
 273     }
 274
 275 check_input:
 276     /* If there is an input, check that it doesn't need to die. */
 277     if( p_playlist->p_input )
 278     {
 279         if( p_playlist->request.b_request && !p_playlist->p_input->b_die )
 280         {
 281             PL_DEBUG( "incoming request - stopping current input" );
 282             input_StopThread( p_playlist->p_input );
 283         }
 284
 285         /* This input is dead. Remove it ! */
 286         if( p_playlist->p_input->b_dead )
 287         {
 288             int i_activity;
 289             input_thread_t *p_input;
 290             PL_DEBUG( "dead input" );
 291
 292             p_input = p_playlist->p_input;
 293             p_playlist->p_input = NULL;
 294
 295             /* Release the playlist lock, because we may get stuck
 296              * in input_DestroyThread() for some time. */
 297             PL_UNLOCK
 298
 299             /* Destroy input */
 300             input_DestroyThread( p_input );
 301
 302             /* Unlink current input
 303              * (_after_ input_DestroyThread for vout garbage collector) */
 304             vlc_object_detach( p_input );
 305
 306             /* Destroy object */
 307             vlc_object_destroy( p_input );
 308
 309             PL_LOCK;
 310
 311             p_playlist->gc_date = mdate();
 312             p_playlist->b_cant_sleep = VLC_TRUE;
 313
 314             if( p_playlist->status.p_item->i_flags
 315                 & PLAYLIST_REMOVE_FLAG )
 316             {
 317                  PL_DEBUG( "%s was marked for deletion, deleting",
 318                                  PLI_NAME( p_playlist->status.p_item  ) );
 319                  playlist_ItemDelete( p_playlist->status.p_item );
 320                  if( p_playlist->request.p_item == p_playlist->status.p_item )
 321                      p_playlist->request.p_item = NULL;
 322                  p_playlist->status.p_item = NULL;
 323             }
 324
 325             i_activity= var_GetInteger( p_playlist, "activity") ;
 326             var_SetInteger( p_playlist, "activity", i_activity -
 327                             DEFAULT_INPUT_ACTIVITY );
 328             goto check_input;
 329         }
 330         /* This input is dying, let it do */
 331         else if( p_playlist->p_input->b_die )
 332         {
 333             PL_DEBUG( "dying input" );
 334             msleep( 25000 ); // 25 ms
 335             goto check_input;
 336         }
 337         /* This input has finished, ask it to die ! */
 338         else if( p_playlist->p_input->b_error
 339                   || p_playlist->p_input->b_eof )
 340         {
 341             PL_DEBUG( "finished input" );
 342             input_StopThread( p_playlist->p_input );
 343             /* No need to wait here, we'll wait in the p_input->b_die case */
 344             goto check_input;
 345         }
 346         else if( p_playlist->p_input->i_state != INIT_S )
 347         {
 348             PL_UNLOCK;
 349             ObjectGarbageCollector( p_playlist );
 350             PL_LOCK;
 351         }
 352     }
 353     else
 354     {
 355         /* No input. Several cases
 356          *  - No request, running status -> start new item
 357          *  - No request, stopped status -> collect garbage
 358          *  - Request, running requested -> start new item
 359          *  - Request, stopped requested -> collect garbage
 360          */
 361          if( (!p_playlist->request.b_request &&
 362               p_playlist->status.i_status != PLAYLIST_STOPPED) ||
 363               ( p_playlist->request.b_request &&
 364                 p_playlist->request.i_status != PLAYLIST_STOPPED ) )
 365          {
 366              msg_Dbg( p_playlist, "starting new item" );
 367              p_item = playlist_NextItem( p_playlist );
 368
 369              if( p_item == NULL )
 370              {
 371                 msg_Dbg( p_playlist, "nothing to play" );
 372                 if( b_playexit == VLC_TRUE )
 373                 {
 374                     msg_Info( p_playlist, "end of playlist, exiting" );
 375                     p_playlist->p_libvlc->b_die = VLC_TRUE;
 376                 }
 377                 p_playlist->status.i_status = PLAYLIST_STOPPED;
 378                 PL_UNLOCK
 379                 return;
 380              }
 381              playlist_PlayItem( p_playlist, p_item );
 382          }
 383          else
 384          {
 385             p_playlist->status.i_status = PLAYLIST_STOPPED;
 386             if( p_playlist->status.p_item &&
 387                 p_playlist->status.p_item->i_flags & PLAYLIST_REMOVE_FLAG )
 388             {
 389                 PL_DEBUG( "deleting item marked for deletion" );
 390                 playlist_ItemDelete( p_playlist->status.p_item );
 391                 p_playlist->status.p_item = NULL;
 392             }
 393
 394             /* Collect garbage */
 395             PL_UNLOCK;
 396             ObjectGarbageCollector( p_playlist );
 397             PL_LOCK;
 398         }
 399     }
 400     PL_UNLOCK
 401 }
 402
 403 /** Playlist dying last loop */
 404 void playlist_LastLoop( playlist_t *p_playlist )
 405 {
 406     vlc_object_t *p_obj;
 407
 408     /* If there is an input, kill it */
 409     while( 1 )
 410     {
 411         PL_LOCK
 412
 413         if( p_playlist->p_input == NULL )
 414         {
 415             PL_UNLOCK
 416             break;
 417         }
 418
 419         if( p_playlist->p_input->b_dead )
 420         {
 421             input_thread_t *p_input;
 422
 423             /* Unlink current input */
 424             p_input = p_playlist->p_input;
 425             p_playlist->p_input = NULL;
 426             PL_UNLOCK
 427
 428             /* Destroy input */
 429             input_DestroyThread( p_input );
 430             /* Unlink current input (_after_ input_DestroyThread for vout
 431              * garbage collector)*/
 432             vlc_object_detach( p_input );
 433
 434             /* Destroy object */
 435             vlc_object_destroy( p_input );
 436             continue;
 437         }
 438         else if( p_playlist->p_input->b_die )
 439         {
 440             /* This input is dying, leave it alone */
 441             ;
 442         }
 443         else if( p_playlist->p_input->b_error || p_playlist->p_input->b_eof )
 444         {
 445             input_StopThread( p_playlist->p_input );
 446             PL_UNLOCK
 447             continue;
 448         }
 449         else
 450         {
 451             p_playlist->p_input->b_eof = 1;
 452         }
 453
 454         PL_UNLOCK
 455
 456         msleep( INTF_IDLE_SLEEP );
 457     }
 458
 459     /* close all remaining sout */
 460     while( ( p_obj = vlc_object_find( p_playlist,
 461                                       VLC_OBJECT_SOUT, FIND_CHILD ) ) )
 462     {
 463         vlc_object_release( p_obj );
 464         sout_DeleteInstance( (sout_instance_t*)p_obj );
 465     }
 466
 467     /* close all remaining vout */
 468     while( ( p_obj = vlc_object_find( p_playlist,
 469                                       VLC_OBJECT_VOUT, FIND_CHILD ) ) )
 470     {
 471         vlc_object_detach( p_obj );
 472         vlc_object_release( p_obj );
 473         vout_Destroy( (vout_thread_t *)p_obj );
 474     }
 475 }
 476
 477 /** Main loop for preparser queue */
 478 void playlist_PreparseLoop( playlist_preparse_t *p_obj )
 479 {
 480     playlist_t *p_playlist = (playlist_t *)p_obj->p_parent;
 481     input_item_t *p_current;
 482     int i_activity;
 483     uint32_t i_m, i_o;
 484
 485     while( !p_playlist->b_die )
 486     {
 487         vlc_mutex_lock( &p_obj->object_lock );
 488         while( p_obj->i_waiting == 0 )
 489         {
 490             vlc_cond_wait( &p_obj->object_wait, &p_obj->object_lock );
 491             if( p_playlist->b_die )
 492             {
 493                 vlc_mutex_unlock( &p_obj->object_lock );
 494                 return;
 495             }
 496         }
 497
 498         p_current = p_obj->pp_waiting[0];
 499         REMOVE_ELEM( p_obj->pp_waiting, p_obj->i_waiting, 0 );
 500         vlc_mutex_unlock( &p_obj->object_lock );
 501
 502         PL_LOCK;
 503         if( p_current )
 504         {
 505             vlc_bool_t b_preparsed = VLC_FALSE;
 506             if( strncmp( p_current->psz_uri, "http:", 5 ) &&
 507                 strncmp( p_current->psz_uri, "rtsp:", 5 ) &&
 508                 strncmp( p_current->psz_uri, "udp:", 4 ) &&
 509                 strncmp( p_current->psz_uri, "mms:", 4 ) &&
 510                 strncmp( p_current->psz_uri, "cdda:", 4 ) &&
 511                 strncmp( p_current->psz_uri, "dvd:", 4 ) &&
 512                 strncmp( p_current->psz_uri, "v4l:", 4 ) &&
 513                 strncmp( p_current->psz_uri, "dshow:", 6 ) )
 514             {
 515                 b_preparsed = VLC_TRUE;
 516                 stats_TimerStart( p_playlist, "Preparse run",
 517                                   STATS_TIMER_PREPARSE );
 518                 PL_UNLOCK;
 519                 input_Preparse( p_playlist, p_current );
 520                 PL_LOCK;
 521                 stats_TimerStop( p_playlist, STATS_TIMER_PREPARSE );
 522             }
 523             PL_UNLOCK;
 524             if( b_preparsed )
 525             {
 526                 p_current->p_meta->i_status |= ITEM_PREPARSED;
 527                 var_SetInteger( p_playlist, "item-change", p_current->i_id );
 528             }
 529             PL_LOCK;
 530
 531             /* If we haven't retrieved enough meta, add to secondary queue
 532              * which will run the "meta fetchers".
 533              * This only checks for meta, not for art
 534              * \todo don't do this for things we won't get meta for, like vids
 535              */
 536             if( p_current->p_meta &&
 537                 !input_MetaSatisfied( p_playlist, p_current, &i_m, &i_o ) )
 538             {
 539                 preparse_item_t p;
 540                 PL_DEBUG("need to fetch meta for %s", p_current->psz_name );
 541                 p.p_item = p_current;
 542                 p.b_fetch_art = VLC_FALSE;
 543                 vlc_mutex_lock( &p_playlist->p_fetcher->object_lock );
 544                 INSERT_ELEM( p_playlist->p_fetcher->p_waiting,
 545                              p_playlist->p_fetcher->i_waiting,
 546                              p_playlist->p_fetcher->i_waiting, p);
 547                 vlc_mutex_unlock( &p_playlist->p_fetcher->object_lock );
 548                 vlc_cond_signal( &p_playlist->p_fetcher->object_wait );
 549             }
 550             /* We already have all needed meta, but we need art right now */
 551             else if( p_current->p_meta &&
 552                      p_playlist->p_fetcher->i_art_policy == ALBUM_ART_ALL &&
 553                      EMPTY_STR( p_current->p_meta->psz_arturl ) )
 554             {
 555                 preparse_item_t p;
 556                 PL_DEBUG("meta ok for %s, need to fetch art",
 557                                                          p_current->psz_name );
 558                 p.p_item = p_current;
 559                 p.b_fetch_art = VLC_TRUE;
 560                 vlc_mutex_lock( &p_playlist->p_fetcher->object_lock );
 561                 INSERT_ELEM( p_playlist->p_fetcher->p_waiting,
 562                              p_playlist->p_fetcher->i_waiting,
 563                              p_playlist->p_fetcher->i_waiting, p);
 564                 vlc_mutex_unlock( &p_playlist->p_fetcher->object_lock );
 565                 vlc_cond_signal( &p_playlist->p_fetcher->object_wait );
 566             }
 567             else
 568             {
 569                 PL_DEBUG( "no fetch required for %s (art currently %s)",
 570                           p_current->psz_name,
 571                           p_current->p_meta ? p_current->p_meta->psz_arturl:
 572                                               "null" );
 573                 vlc_gc_decref( p_current );
 574             }
 575             PL_UNLOCK;
 576         }
 577         else
 578             PL_UNLOCK;
 579
 580         vlc_mutex_lock( &p_obj->object_lock );
 581         i_activity = var_GetInteger( p_playlist, "activity" );
 582         if( i_activity < 0 ) i_activity = 0;
 583         vlc_mutex_unlock( &p_obj->object_lock );
 584         /* Sleep at least 1ms */
 585         msleep( (i_activity+1) * 1000 );
 586     }
 587 }
 588
 589 /** Main loop for secondary preparser queue */
 590 void playlist_FetcherLoop( playlist_fetcher_t *p_obj )
 591 {
 592     playlist_t *p_playlist = (playlist_t *)p_obj->p_parent;
 593     vlc_bool_t b_fetch_art;
 594     input_item_t *p_item;
 595     int i_activity;
 596
 597     while( !p_playlist->b_die )
 598     {
 599         vlc_mutex_lock( &p_obj->object_lock );
 600         while( p_obj->i_waiting == 0 )
 601         {
 602             vlc_cond_wait( &p_obj->object_wait, &p_obj->object_lock );
 603             if( p_playlist->b_die )
 604             {
 605                 vlc_mutex_unlock( &p_obj->object_lock );
 606                 return;
 607             }
 608         }
 609
 610         b_fetch_art = p_obj->p_waiting->b_fetch_art;
 611         p_item = p_obj->p_waiting->p_item;
 612         REMOVE_ELEM( p_obj->p_waiting, p_obj->i_waiting, 0 );
 613         vlc_mutex_unlock( &p_obj->object_lock );
 614         if( p_item )
 615         {
 616             assert( p_item->p_meta );
 617             if( !b_fetch_art )
 618             {
 619                 input_MetaFetch( p_playlist, p_item );
 620                 p_item->p_meta->i_status |= ITEM_META_FETCHED;
 621                 var_SetInteger( p_playlist, "item-change", p_item->i_id );
 622                 /*  Fetch right now */
 623                 if( p_playlist->p_fetcher->i_art_policy == ALBUM_ART_ALL )
 624                 {
 625                     vlc_mutex_lock( &p_obj->object_lock );
 626                     preparse_item_t p;
 627                     p.p_item = p_item;
 628                     p.b_fetch_art = VLC_TRUE;
 629                     INSERT_ELEM( p_playlist->p_fetcher->p_waiting,
 630                                  p_playlist->p_fetcher->i_waiting,
 631                                  0, p );
 632                     PL_DEBUG("meta fetched for %s, get art", p_item->psz_name);
 633                     vlc_mutex_unlock( &p_obj->object_lock );
 634                     continue;
 635                 }
 636                 else
 637                     vlc_gc_decref( p_item );
 638             }
 639             else
 640             {
 641                 int i_ret = input_ArtFind( p_playlist, p_item );
 642                 if( i_ret == 1 )
 643                 {
 644                     PL_DEBUG("downloading art for %s", p_item->psz_name );
 645                     if( input_DownloadAndCacheArt( p_playlist, p_item ) )
 646                         p_item->p_meta->i_status |= ITEM_ART_NOTFOUND;
 647                     else {
 648                         p_item->p_meta->i_status |= ITEM_ART_FETCHED;
 649                         var_SetInteger( p_playlist, "item-change",
 650                                         p_item->i_id );
 651                     }
 652                 }
 653                 else if( i_ret == 0 ) /* Was in cache */
 654                 {
 655                     PL_DEBUG("found art for %s in cache", p_item->psz_name );
 656                     p_item->p_meta->i_status |= ITEM_ART_FETCHED;
 657                     var_SetInteger( p_playlist, "item-change", p_item->i_id );
 658                 }
 659                 else
 660                 {
 661                     PL_DEBUG("art not found for %s", p_item->psz_name );
 662                     p_item->p_meta->i_status |= ITEM_ART_NOTFOUND;
 663                 }
 664                 vlc_gc_decref( p_item );
 665            }
 666         }
 667         vlc_mutex_lock( &p_obj->object_lock );
 668         i_activity = var_GetInteger( p_playlist, "activity" );
 669         if( i_activity < 0 ) i_activity = 0;
 670         vlc_mutex_unlock( &p_obj->object_lock );
 671         /* Sleep at least 1ms */
 672         msleep( (i_activity+1) * 1000 );
 673     }
 674 }
 675
 676 static void VariablesInit( playlist_t *p_playlist )
 677 {
 678     vlc_value_t val;
 679     /* These variables control updates */
 680     var_Create( p_playlist, "intf-change", VLC_VAR_BOOL );
 681     val.b_bool = VLC_TRUE;
 682     var_Set( p_playlist, "intf-change", val );
 683
 684     var_Create( p_playlist, "item-change", VLC_VAR_INTEGER );
 685     val.i_int = -1;
 686     var_Set( p_playlist, "item-change", val );
 687
 688     var_Create( p_playlist, "item-deleted", VLC_VAR_INTEGER );
 689     val.i_int = -1;
 690     var_Set( p_playlist, "item-deleted", val );
 691
 692     var_Create( p_playlist, "item-append", VLC_VAR_ADDRESS );
 693
 694     var_Create( p_playlist, "playlist-current", VLC_VAR_INTEGER );
 695     val.i_int = -1;
 696     var_Set( p_playlist, "playlist-current", val );
 697
 698     var_Create( p_playlist, "intf-popupmenu", VLC_VAR_BOOL );
 699
 700     var_Create( p_playlist, "intf-show", VLC_VAR_BOOL );
 701     val.b_bool = VLC_TRUE;
 702     var_Set( p_playlist, "intf-show", val );
 703
 704     var_Create( p_playlist, "activity", VLC_VAR_INTEGER );
 705     var_SetInteger( p_playlist, "activity", 0 );
 706
 707     /* Variables to control playback */
 708     var_CreateGetBool( p_playlist, "play-and-stop" );
 709     var_CreateGetBool( p_playlist, "play-and-exit" );
 710     var_CreateGetBool( p_playlist, "random" );
 711     var_CreateGetBool( p_playlist, "repeat" );
 712     var_CreateGetBool( p_playlist, "loop" );
 713
 714     var_AddCallback( p_playlist, "random", RandomCallback, NULL );
 715 }