git.sesse.net Git - vlc/blob - src/playlist/item.c

   1 /*****************************************************************************
   2  * item.c : Playlist item creation/deletion/add/removal functions
   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 #ifdef HAVE_CONFIG_H
  25 # include "config.h"
  26 #endif
  27
  28 #include <vlc_common.h>
  29 #include <assert.h>
  30 #include <vlc_playlist.h>
  31 #include "playlist_internal.h"
  32
  33 static void AddItem( playlist_t *p_playlist, playlist_item_t *p_item,
  34                      playlist_item_t *p_node, int i_mode, int i_pos );
  35 static void GoAndPreparse( playlist_t *p_playlist, int i_mode,
  36                            playlist_item_t *, playlist_item_t * );
  37 static void ChangeToNode( playlist_t *p_playlist, playlist_item_t *p_item );
  38
  39 static playlist_item_t *ItemToNode( playlist_t *, playlist_item_t *, bool );
  40
  41 /*****************************************************************************
  42  * An input item has gained a subitem (Event Callback)
  43  *****************************************************************************/
  44 static void input_item_subitem_added( const vlc_event_t * p_event,
  45                                       void * user_data )
  46 {
  47     playlist_item_t *p_parent_playlist_item = user_data;
  48     playlist_t * p_playlist = p_parent_playlist_item->p_playlist;
  49     input_item_t * p_parent, * p_child;
  50     playlist_item_t * p_child_in_category;
  51     playlist_item_t * p_item_in_category;
  52     bool b_play;
  53
  54     p_parent = p_event->p_obj;
  55     p_child = p_event->u.input_item_subitem_added.p_new_child;
  56
  57     PL_LOCK;
  58     b_play = var_CreateGetBool( p_playlist, "playlist-autostart" );
  59
  60     /* This part is really hakish, but this playlist system isn't simple */
  61     /* First check if we haven't already added the item as we are
  62      * listening using the onelevel and the category representent
  63      * (Because of the playlist design) */
  64     p_child_in_category = playlist_ItemFindFromInputAndRoot(
  65                             p_playlist, p_child,
  66                             p_playlist->p_root_category,
  67                             false /* Only non-node */ );
  68
  69     if( !p_child_in_category )
  70     {
  71         /* Then, transform to a node if needed */
  72         p_item_in_category = playlist_ItemFindFromInputAndRoot(
  73                                 p_playlist, p_parent,
  74                                 p_playlist->p_root_category,
  75                                 false /* Only non-node */ );
  76         if( !p_item_in_category )
  77         {
  78             /* Item may have been removed */
  79             PL_UNLOCK;
  80             return;
  81         }
  82
  83         bool b_stop = p_item_in_category->i_flags & PLAYLIST_SUBITEM_STOP_FLAG;
  84
  85         b_play = b_play &&
  86             p_item_in_category == get_current_status_item( p_playlist ) &&
  87             p_item_in_category->i_children == -1;
  88
  89         /* If this item is already a node don't transform it */
  90         if( p_item_in_category->i_children == -1 )
  91         {
  92             p_item_in_category = ItemToNode( p_playlist,
  93                     p_item_in_category, pl_Locked );
  94             p_item_in_category->p_input->i_type = ITEM_TYPE_PLAYLIST;
  95         }
  96
  97         int i_ret = playlist_BothAddInput( p_playlist, p_child,
  98                 p_item_in_category,
  99                 PLAYLIST_APPEND | PLAYLIST_SPREPARSE , PLAYLIST_END,
 100                 NULL, NULL, pl_Locked );
 101
 102         if( i_ret == VLC_SUCCESS && b_play )
 103         {
 104             if( b_stop )
 105             {
 106                 p_item_in_category->i_flags &= ~PLAYLIST_SUBITEM_STOP_FLAG;
 107                 PL_UNLOCK;
 108                 playlist_Stop( p_playlist );
 109                 return;
 110             }
 111             playlist_Control( p_playlist, PLAYLIST_VIEWPLAY,
 112                           pl_Locked, p_item_in_category, NULL );
 113         }
 114     }
 115
 116     PL_UNLOCK;
 117
 118 }
 119
 120 /*****************************************************************************
 121  * An input item's meta or duration has changed (Event Callback)
 122  *****************************************************************************/
 123 static void input_item_changed( const vlc_event_t * p_event,
 124                                 void * user_data )
 125 {
 126     playlist_item_t *p_item = user_data;
 127     VLC_UNUSED( p_event );
 128     var_SetAddress( p_item->p_playlist, "item-change", p_item->p_input );
 129 }
 130
 131 /*****************************************************************************
 132  * Listen to vlc_InputItemAddSubItem event
 133  *****************************************************************************/
 134 static void install_input_item_observer( playlist_item_t * p_item )
 135 {
 136     vlc_event_manager_t * p_em = &p_item->p_input->event_manager;
 137     vlc_event_attach( p_em, vlc_InputItemSubItemAdded,
 138                       input_item_subitem_added, p_item );
 139     vlc_event_attach( p_em, vlc_InputItemDurationChanged,
 140                       input_item_changed, p_item );
 141     vlc_event_attach( p_em, vlc_InputItemMetaChanged,
 142                       input_item_changed, p_item );
 143     vlc_event_attach( p_em, vlc_InputItemNameChanged,
 144                       input_item_changed, p_item );
 145     vlc_event_attach( p_em, vlc_InputItemInfoChanged,
 146                       input_item_changed, p_item );
 147     vlc_event_attach( p_em, vlc_InputItemErrorWhenReadingChanged,
 148                       input_item_changed, p_item );
 149 }
 150
 151 static void uninstall_input_item_observer( playlist_item_t * p_item )
 152 {
 153     vlc_event_manager_t * p_em = &p_item->p_input->event_manager;
 154     vlc_event_detach( p_em, vlc_InputItemSubItemAdded,
 155                       input_item_subitem_added, p_item );
 156     vlc_event_detach( p_em, vlc_InputItemMetaChanged,
 157                       input_item_changed, p_item );
 158     vlc_event_detach( p_em, vlc_InputItemDurationChanged,
 159                       input_item_changed, p_item );
 160     vlc_event_detach( p_em, vlc_InputItemNameChanged,
 161                       input_item_changed, p_item );
 162     vlc_event_detach( p_em, vlc_InputItemInfoChanged,
 163                       input_item_changed, p_item );
 164     vlc_event_detach( p_em, vlc_InputItemErrorWhenReadingChanged,
 165                       input_item_changed, p_item );
 166 }
 167
 168 /*****************************************************************************
 169  * Playlist item creation
 170  *****************************************************************************/
 171 playlist_item_t *playlist_ItemNewFromInput( playlist_t *p_playlist,
 172                                               input_item_t *p_input, bool install_observer )
 173 {
 174     playlist_item_t* p_item = malloc( sizeof( playlist_item_t ) );
 175     if( !p_item )
 176         return NULL;
 177
 178     assert( p_input );
 179
 180     p_item->p_input = p_input;
 181     vlc_gc_incref( p_item->p_input );
 182
 183     p_item->i_id = ++pl_priv(p_playlist)->i_last_playlist_id;
 184
 185     p_item->p_parent = NULL;
 186     p_item->i_children = -1;
 187     p_item->pp_children = NULL;
 188     p_item->i_flags = 0;
 189     p_item->p_playlist = p_playlist;
 190     p_item->b_input_item_observer = install_observer;
 191
 192     if( install_observer )
 193         install_input_item_observer( p_item );
 194
 195     return p_item;
 196 }
 197
 198 /***************************************************************************
 199  * Playlist item destruction
 200  ***************************************************************************/
 201
 202 /**
 203  * Release an item
 204  *
 205  * \param p_item item to delete
 206  * \return VLC_SUCCESS
 207 */
 208 int playlist_ItemRelease( playlist_item_t *p_item )
 209 {
 210     /* For the assert */
 211     playlist_t *p_playlist = p_item->p_playlist;
 212     PL_ASSERT_LOCKED;
 213
 214     /* Surprise, we can't actually do more because we
 215      * don't do refcounting, or eauivalent.
 216      * Because item are not only accessed by their id
 217      * using playlist_item outside the PL_LOCK isn't safe.
 218      * Most of the modules does that.
 219      *
 220      * Who wants to add proper memory management? */
 221     if( p_item->b_input_item_observer )
 222         uninstall_input_item_observer( p_item );
 223     ARRAY_APPEND( pl_priv(p_playlist)->items_to_delete, p_item);
 224     return VLC_SUCCESS;
 225 }
 226
 227 /**
 228  * Delete input item
 229  *
 230  * Remove an input item when it appears from a root playlist item
 231  * \param p_playlist playlist object
 232  * \param p_input the input to delete
 233  * \param p_root root playlist item
 234  * \param b_do_stop must stop or not the playlist
 235  * \return VLC_SUCCESS or VLC_EGENERIC
 236 */
 237 static int DeleteFromInput( playlist_t *p_playlist, input_item_t *p_input,
 238                             playlist_item_t *p_root, bool b_do_stop )
 239 {
 240     PL_ASSERT_LOCKED;
 241     playlist_item_t *p_item = playlist_ItemFindFromInputAndRoot(
 242         p_playlist, p_input, p_root, false );
 243     if( !p_item ) return VLC_EGENERIC;
 244     return playlist_DeleteItem( p_playlist, p_item, b_do_stop );
 245 }
 246
 247 /**
 248  * Delete input item
 249  *
 250  * Remove an input item when it appears from a root playlist item
 251  * \param p_playlist playlist object
 252  * \param p_input the input to delete
 253  * \param p_root root playlist item
 254  * \param b_locked TRUE if the playlist is locked
 255  * \return VLC_SUCCESS or VLC_EGENERIC
 256  */
 257 int playlist_DeleteFromInputInParent( playlist_t *p_playlist,
 258                                       input_item_t *p_item,
 259                                       playlist_item_t *p_root, bool b_locked )
 260 {
 261     int i_ret;
 262     PL_LOCK_IF( !b_locked );
 263     i_ret = DeleteFromInput( p_playlist, p_item, p_root, true );
 264     PL_UNLOCK_IF( !b_locked );
 265     return i_ret;
 266 }
 267
 268 /**
 269  * Delete from input
 270  *
 271  * Remove an input item from ONELEVEL and CATEGORY
 272  * \param p_playlist playlist object
 273  * \param p_input the input to delete
 274  * \param b_locked TRUE if the playlist is locked
 275  * \return VLC_SUCCESS or VLC_ENOITEM
 276  */
 277 int playlist_DeleteFromInput( playlist_t *p_playlist, input_item_t *p_input,
 278                               bool b_locked )
 279 {
 280     int i_ret1, i_ret2;
 281     PL_LOCK_IF( !b_locked );
 282     i_ret1 = DeleteFromInput( p_playlist, p_input,
 283                              p_playlist->p_root_category, true );
 284     i_ret2 = DeleteFromInput( p_playlist, p_input,
 285                      p_playlist->p_root_onelevel, true );
 286     PL_UNLOCK_IF( !b_locked );
 287     return ( i_ret1 == VLC_SUCCESS || i_ret2 == VLC_SUCCESS ) ?
 288                             VLC_SUCCESS : VLC_ENOITEM;
 289 }
 290
 291 /**
 292  * Clear the playlist
 293  *
 294  * \param p_playlist playlist object
 295  * \param b_locked TRUE if the playlist is locked
 296  * \return nothing
 297  */
 298 void playlist_Clear( playlist_t * p_playlist, bool b_locked )
 299 {
 300     PL_LOCK_IF( !b_locked );
 301     playlist_NodeEmpty( p_playlist, p_playlist->p_local_category, true );
 302     playlist_NodeEmpty( p_playlist, p_playlist->p_local_onelevel, true );
 303     PL_UNLOCK_IF( !b_locked );
 304 }
 305
 306 /**
 307  * Delete playlist item
 308  *
 309  * Remove a playlist item from the playlist, given its id
 310  * This function is to be used only by the playlist
 311  * \param p_playlist playlist object
 312  * \param i_id id of the item do delete
 313  * \return VLC_SUCCESS or an error
 314  */
 315 int playlist_DeleteFromItemId( playlist_t *p_playlist, int i_id )
 316 {
 317     PL_ASSERT_LOCKED;
 318     playlist_item_t *p_item = playlist_ItemGetById( p_playlist, i_id );
 319     if( !p_item ) return VLC_EGENERIC;
 320     return playlist_DeleteItem( p_playlist, p_item, true );
 321 }
 322
 323 /***************************************************************************
 324  * Playlist item addition
 325  ***************************************************************************/
 326 /**
 327  * Playlist add
 328  *
 329  * Add an item to the playlist or the media library
 330  * \param p_playlist the playlist to add into
 331  * \param psz_uri the mrl to add to the playlist
 332  * \param psz_name a text giving a name or description of this item
 333  * \param i_mode the mode used when adding
 334  * \param i_pos the position in the playlist where to add. If this is
 335  *        PLAYLIST_END the item will be added at the end of the playlist
 336  *        regardless of its size
 337  * \param b_playlist TRUE for playlist, FALSE for media library
 338  * \param b_locked TRUE if the playlist is locked
 339  * \return VLC_SUCCESS or a VLC error code
 340  */
 341 int playlist_Add( playlist_t *p_playlist, const char *psz_uri,
 342                   const char *psz_name, int i_mode, int i_pos,
 343                   bool b_playlist, bool b_locked )
 344 {
 345     return playlist_AddExt( p_playlist, psz_uri, psz_name,
 346                             i_mode, i_pos, -1, 0, NULL, 0, b_playlist, b_locked );
 347 }
 348
 349 /**
 350  * Add a MRL into the playlist or the media library, duration and options given
 351  *
 352  * \param p_playlist the playlist to add into
 353  * \param psz_uri the mrl to add to the playlist
 354  * \param psz_name a text giving a name or description of this item
 355  * \param i_mode the mode used when adding
 356  * \param i_pos the position in the playlist where to add. If this is
 357  *        PLAYLIST_END the item will be added at the end of the playlist
 358  *        regardless of its size
 359  * \param i_duration length of the item in milliseconds.
 360  * \param i_options the number of options
 361  * \param ppsz_options an array of options
 362  * \param i_option_flags options flags
 363  * \param b_playlist TRUE for playlist, FALSE for media library
 364  * \param b_locked TRUE if the playlist is locked
 365  * \return VLC_SUCCESS or a VLC error code
 366 */
 367 int playlist_AddExt( playlist_t *p_playlist, const char * psz_uri,
 368                      const char *psz_name, int i_mode, int i_pos,
 369                      mtime_t i_duration,
 370                      int i_options, const char *const *ppsz_options,
 371                      unsigned i_option_flags,
 372                      bool b_playlist, bool b_locked )
 373 {
 374     int i_ret;
 375     input_item_t *p_input;
 376
 377     p_input = input_item_NewExt( p_playlist, psz_uri, psz_name,
 378                                  i_options, ppsz_options, i_option_flags,
 379                                  i_duration );
 380     if( p_input == NULL )
 381         return VLC_ENOMEM;
 382     i_ret = playlist_AddInput( p_playlist, p_input, i_mode, i_pos, b_playlist,
 383                                b_locked );
 384     vlc_gc_decref( p_input );
 385     return i_ret;
 386 }
 387
 388 /**
 389  * Add an input item to the playlist node
 390  *
 391  * \param p_playlist the playlist to add into
 392  * \param p_input the input item to add
 393  * \param i_mode the mode used when adding
 394  * \param i_pos the position in the playlist where to add. If this is
 395  *        PLAYLIST_END the item will be added at the end of the playlist
 396  *        regardless of its size
 397  * \param b_playlist TRUE for playlist, FALSE for media library
 398  * \param b_locked TRUE if the playlist is locked
 399  * \return VLC_SUCCESS or VLC_ENOMEM or VLC_EGENERIC
 400 */
 401 int playlist_AddInput( playlist_t* p_playlist, input_item_t *p_input,
 402                        int i_mode, int i_pos, bool b_playlist,
 403                        bool b_locked )
 404 {
 405     playlist_item_t *p_item_cat, *p_item_one;
 406     if( p_playlist->b_die ) return VLC_EGENERIC;
 407     if( !pl_priv(p_playlist)->b_doing_ml )
 408         PL_DEBUG( "adding item `%s' ( %s )", p_input->psz_name,
 409                                              p_input->psz_uri );
 410
 411     PL_LOCK_IF( !b_locked );
 412
 413     /* Add to ONELEVEL */
 414     p_item_one = playlist_ItemNewFromInput( p_playlist, p_input, false );
 415     if( p_item_one == NULL ) return VLC_ENOMEM;
 416     AddItem( p_playlist, p_item_one,
 417              b_playlist ? p_playlist->p_local_onelevel :
 418                           p_playlist->p_ml_onelevel , i_mode, i_pos );
 419
 420     /* Add to CATEGORY */
 421     p_item_cat = playlist_ItemNewFromInput( p_playlist, p_input, true );
 422     if( p_item_cat == NULL ) return VLC_ENOMEM;
 423     AddItem( p_playlist, p_item_cat,
 424              b_playlist ? p_playlist->p_local_category :
 425                           p_playlist->p_ml_category , i_mode, i_pos );
 426
 427     GoAndPreparse( p_playlist, i_mode, p_item_cat, p_item_one );
 428
 429     PL_UNLOCK_IF( !b_locked );
 430     return VLC_SUCCESS;
 431 }
 432
 433 /**
 434  * Add input
 435  *
 436  * Add an input item to p_direct_parent in the category tree, and to the
 437  * matching top category in onelevel
 438  * \param p_playlist the playlist to add into
 439  * \param p_input the input item to add
 440  * \param p_direct_parent the parent item to add into
 441  * \param i_mode the mode used when adding
 442  * \param i_pos the position in the playlist where to add. If this is
 443  *        PLAYLIST_END the item will be added at the end of the playlist
 444  *        regardless of its size
 445  * \param i_cat id of the items category
 446  * \param i_one id of the item onelevel category
 447  * \param b_locked TRUE if the playlist is locked
 448  * \return VLC_SUCCESS if success, VLC_EGENERIC if fail, VLC_ENOMEM if OOM
 449  */
 450 int playlist_BothAddInput( playlist_t *p_playlist,
 451                            input_item_t *p_input,
 452                            playlist_item_t *p_direct_parent,
 453                            int i_mode, int i_pos,
 454                            int *i_cat, int *i_one, bool b_locked )
 455 {
 456     playlist_item_t *p_item_cat, *p_item_one, *p_up;
 457     int i_top;
 458     assert( p_input );
 459
 460     if( !vlc_object_alive( p_playlist ) )
 461         return VLC_EGENERIC;
 462
 463     PL_LOCK_IF( !b_locked );
 464
 465     /* Add to category */
 466     p_item_cat = playlist_ItemNewFromInput( p_playlist, p_input, true );
 467     if( p_item_cat == NULL ) return VLC_ENOMEM;
 468     AddItem( p_playlist, p_item_cat, p_direct_parent, i_mode, i_pos );
 469
 470     /* Add to onelevel */
 471     /** \todo make a faster case for ml import */
 472     p_item_one = playlist_ItemNewFromInput( p_playlist, p_input, false );
 473     if( p_item_one == NULL ) return VLC_ENOMEM;
 474
 475     p_up = p_direct_parent;
 476     while( p_up->p_parent != p_playlist->p_root_category )
 477     {
 478         p_up = p_up->p_parent;
 479     }
 480     for( i_top = 0 ; i_top < p_playlist->p_root_onelevel->i_children; i_top++ )
 481     {
 482         if( p_playlist->p_root_onelevel->pp_children[i_top]->p_input ==
 483                              p_up->p_input )
 484         {
 485             AddItem( p_playlist, p_item_one,
 486                      p_playlist->p_root_onelevel->pp_children[i_top],
 487                      i_mode, i_pos );
 488             break;
 489         }
 490     }
 491     GoAndPreparse( p_playlist, i_mode, p_item_cat, p_item_one );
 492
 493     if( i_cat ) *i_cat = p_item_cat->i_id;
 494     if( i_one ) *i_one = p_item_one->i_id;
 495
 496     PL_UNLOCK_IF( !b_locked );
 497     return VLC_SUCCESS;
 498 }
 499
 500 /**
 501  * Add an input item to a given node
 502  *
 503  * \param p_playlist the playlist to add into
 504  * \param p_input the input item to add
 505  * \param p_parent the parent item to add into
 506  * \param i_mode the mode used when addin
 507  * \param i_pos the position in the playlist where to add. If this is
 508  *        PLAYLIST_END the item will be added at the end of the playlist
 509  *        regardless of its size
 510  * \param b_locked TRUE if the playlist is locked
 511  * \return the new playlist item
 512  */
 513 playlist_item_t * playlist_NodeAddInput( playlist_t *p_playlist,
 514                                          input_item_t *p_input,
 515                                          playlist_item_t *p_parent,
 516                                          int i_mode, int i_pos,
 517                                          bool b_locked )
 518 {
 519     playlist_item_t *p_item;
 520     assert( p_input );
 521     assert( p_parent && p_parent->i_children != -1 );
 522
 523     if( p_playlist->b_die )
 524         return NULL;
 525     PL_LOCK_IF( !b_locked );
 526
 527     p_item = playlist_ItemNewFromInput( p_playlist, p_input, true );
 528     if( p_item == NULL ) return NULL;
 529     AddItem( p_playlist, p_item, p_parent, i_mode, i_pos );
 530
 531     PL_UNLOCK_IF( !b_locked );
 532
 533     return p_item;
 534 }
 535
 536 /*****************************************************************************
 537  * Playlist item misc operations
 538  *****************************************************************************/
 539
 540 /**
 541  * Item to node
 542  *
 543  * Transform an item to a node. Return the node in the category tree, or NULL
 544  * if not found there
 545  * This function must be entered without the playlist lock
 546  * \param p_playlist the playlist object
 547  * \param p_item the item to transform
 548  * \param b_locked TRUE if the playlist is locked
 549  * \return the item transform in a node
 550  */
 551 static playlist_item_t *ItemToNode( playlist_t *p_playlist,
 552                                     playlist_item_t *p_item,
 553                                     bool b_locked )
 554 {
 555
 556     playlist_item_t *p_item_in_category;
 557     /* What we do
 558      * Find the input in CATEGORY.
 559      *  - If we find it
 560      *    - change it to node
 561      *    - we'll return it at the end
 562      *    - If we are a direct child of onelevel root, change to node, else
 563      *      delete the input from ONELEVEL
 564      *  - If we don't find it, just change to node (we are probably in VLM)
 565      *    and return NULL
 566      *
 567      * If we were in ONELEVEL, we thus retrieve the node in CATEGORY (will be
 568      * useful for later BothAddInput )
 569      */
 570
 571     PL_LOCK_IF( !b_locked );
 572
 573     /* Fast track the media library, no time to loose */
 574     if( p_item == p_playlist->p_ml_category ) {
 575         PL_UNLOCK_IF( !b_locked );
 576         return p_item;
 577     }
 578
 579     /** \todo First look if we don't already have it */
 580     p_item_in_category = playlist_ItemFindFromInputAndRoot(
 581                                             p_playlist, p_item->p_input,
 582                                             p_playlist->p_root_category,
 583                                             true );
 584
 585     if( p_item_in_category )
 586     {
 587         playlist_item_t *p_item_in_one = playlist_ItemFindFromInputAndRoot(
 588                                             p_playlist, p_item->p_input,
 589                                             p_playlist->p_root_onelevel,
 590                                             true );
 591         assert( p_item_in_one );
 592
 593         /* We already have it, and there is nothing more to do */
 594         ChangeToNode( p_playlist, p_item_in_category );
 595
 596         /* Item in one is a root, change it to node */
 597         if( p_item_in_one->p_parent == p_playlist->p_root_onelevel )
 598             ChangeToNode( p_playlist, p_item_in_one );
 599         else
 600         {
 601             playlist_item_t *p_status_item = get_current_status_item( p_playlist );
 602             playlist_item_t *p_status_node = get_current_status_node( p_playlist );
 603             if( p_item_in_one == p_status_item )
 604             {
 605                 /* We're deleting the current playlist item. Update
 606                  * the playlist object to point at the previous item
 607                  * so the playlist won't be restarted */
 608                 playlist_item_t *p_prev_status_item = NULL;
 609                 int i = 0;
 610                 while( i < p_status_node->i_children &&
 611                        p_status_node->pp_children[i] != p_status_item )
 612                 {
 613                     p_prev_status_item = p_status_node->pp_children[i];
 614                     i++;
 615                 }
 616                 if( i == p_status_node->i_children )
 617                     p_prev_status_item = NULL;
 618                 if( p_prev_status_item )
 619                     set_current_status_item( p_playlist, p_prev_status_item );
 620             }
 621             DeleteFromInput( p_playlist, p_item_in_one->p_input,
 622                              p_playlist->p_root_onelevel, false );
 623         }
 624         pl_priv(p_playlist)->b_reset_currently_playing = true;
 625         vlc_cond_signal( &pl_priv(p_playlist)->signal );
 626         var_SetAddress( p_playlist, "item-change", p_item_in_category->p_input );
 627         var_SetAddress( p_playlist, "leaf-to-parent", p_item_in_category->p_input );
 628         PL_UNLOCK_IF( !b_locked );
 629         return p_item_in_category;
 630     }
 631     else
 632     {
 633         ChangeToNode( p_playlist, p_item );
 634         PL_UNLOCK_IF( !b_locked );
 635         return p_item;
 636     }
 637 }
 638
 639 /**
 640  * Find an item within a root, given its input id.
 641  *
 642  * \param p_playlist the playlist object
 643  * \param p_item the input item
 644  * \param p_root root playlist item
 645  * \param b_items_only TRUE if we want the item himself
 646  * \return the first found item, or NULL if not found
 647  */
 648 playlist_item_t *playlist_ItemFindFromInputAndRoot( playlist_t *p_playlist,
 649                                                     input_item_t *p_item,
 650                                                     playlist_item_t *p_root,
 651                                                     bool b_items_only )
 652 {
 653     int i;
 654     for( i = 0 ; i< p_root->i_children ; i++ )
 655     {
 656         if( ( b_items_only ? p_root->pp_children[i]->i_children == -1 : 1 ) &&
 657             p_root->pp_children[i]->p_input == p_item )
 658         {
 659             return p_root->pp_children[i];
 660         }
 661         else if( p_root->pp_children[i]->i_children >= 0 )
 662         {
 663             playlist_item_t *p_search =
 664                  playlist_ItemFindFromInputAndRoot( p_playlist, p_item,
 665                                                     p_root->pp_children[i],
 666                                                     b_items_only );
 667             if( p_search ) return p_search;
 668         }
 669     }
 670     return NULL;
 671 }
 672
 673
 674 static int ItemIndex ( playlist_item_t *p_item )
 675 {
 676     for( int i = 0; i < p_item->p_parent->i_children; i++ )
 677         if( p_item->p_parent->pp_children[i] == p_item ) return i;
 678     return -1;
 679 }
 680
 681 /**
 682  * Moves an item
 683  *
 684  * This function must be entered with the playlist lock
 685  *
 686  * \param p_playlist the playlist
 687  * \param p_item the item to move
 688  * \param p_node the new parent of the item
 689  * \param i_newpos the new position under this new parent
 690  * \return VLC_SUCCESS or an error
 691  */
 692 int playlist_TreeMove( playlist_t * p_playlist, playlist_item_t *p_item,
 693                        playlist_item_t *p_node, int i_newpos )
 694 {
 695     PL_ASSERT_LOCKED;
 696
 697     if( p_node->i_children == -1 ) return VLC_EGENERIC;
 698
 699     playlist_item_t *p_detach = p_item->p_parent;
 700     int i_index = ItemIndex( p_item );
 701
 702     REMOVE_ELEM( p_detach->pp_children, p_detach->i_children, i_index );
 703
 704     if( p_detach == p_node && i_index < i_newpos )
 705         i_newpos--;
 706
 707     INSERT_ELEM( p_node->pp_children, p_node->i_children, i_newpos, p_item );
 708     p_item->p_parent = p_node;
 709
 710     pl_priv( p_playlist )->b_reset_currently_playing = true;
 711     vlc_cond_signal( &pl_priv( p_playlist )->signal );
 712     return VLC_SUCCESS;
 713 }
 714
 715 /**
 716  * Moves an array of items
 717  *
 718  * This function must be entered with the playlist lock
 719  *
 720  * \param p_playlist the playlist
 721  * \param i_items the number of indexes to move
 722  * \param pp_items the array of indexes to move
 723  * \param p_node the target node
 724  * \param i_newpos the target position under this node
 725  * \return VLC_SUCCESS or an error
 726  */
 727 int playlist_TreeMoveMany( playlist_t *p_playlist,
 728                             int i_items, playlist_item_t **pp_items,
 729                             playlist_item_t *p_node, int i_newpos )
 730 {
 731     PL_ASSERT_LOCKED;
 732
 733     if ( p_node->i_children == -1 ) return VLC_EGENERIC;
 734
 735     int i;
 736     for( i = 0; i < i_items; i++ )
 737     {
 738         playlist_item_t *p_item = pp_items[i];
 739         int i_index = ItemIndex( p_item );
 740         playlist_item_t *p_parent = p_item->p_parent;
 741         REMOVE_ELEM( p_parent->pp_children, p_parent->i_children, i_index );
 742         if ( p_parent == p_node && i_index < i_newpos ) i_newpos--;
 743     }
 744     for( i = i_items - 1; i >= 0; i-- )
 745     {
 746         playlist_item_t *p_item = pp_items[i];
 747         INSERT_ELEM( p_node->pp_children, p_node->i_children, i_newpos, p_item );
 748         p_item->p_parent = p_node;
 749     }
 750
 751     pl_priv( p_playlist )->b_reset_currently_playing = true;
 752     vlc_cond_signal( &pl_priv( p_playlist )->signal );
 753     return VLC_SUCCESS;
 754 }
 755
 756 /**
 757  * Send a notification that an item has been added to a node
 758  *
 759  * \param p_playlist the playlist object
 760  * \param i_item_id id of the item added
 761  * \param i_node_id id of the node in wich the item was added
 762  * \param b_signal TRUE if the function must send a signal
 763  * \return nothing
 764  */
 765 void playlist_SendAddNotify( playlist_t *p_playlist, int i_item_id,
 766                              int i_node_id, bool b_signal )
 767 {
 768     playlist_private_t *p_sys = pl_priv(p_playlist);
 769     PL_ASSERT_LOCKED;
 770
 771     p_sys->b_reset_currently_playing = true;
 772     if( b_signal )
 773         vlc_cond_signal( &p_sys->signal );
 774
 775     playlist_add_t add;
 776     add.i_item = i_item_id;
 777     add.i_node = i_node_id;
 778
 779     vlc_value_t val;
 780     val.p_address = &add;
 781
 782     var_Set( p_playlist, "playlist-item-append", val );
 783 }
 784
 785 /***************************************************************************
 786  * The following functions are local
 787  ***************************************************************************/
 788
 789 /* Enqueue an item for preparsing, and play it, if needed */
 790 static void GoAndPreparse( playlist_t *p_playlist, int i_mode,
 791                            playlist_item_t *p_item_cat,
 792                            playlist_item_t *p_item_one )
 793 {
 794     PL_ASSERT_LOCKED;
 795     if( (i_mode & PLAYLIST_GO ) )
 796     {
 797         playlist_item_t *p_parent = p_item_one;
 798         playlist_item_t *p_toplay = NULL;
 799         while( p_parent )
 800         {
 801             if( p_parent == p_playlist->p_root_category )
 802             {
 803                 p_toplay = p_item_cat; break;
 804             }
 805             else if( p_parent == p_playlist->p_root_onelevel )
 806             {
 807                 p_toplay = p_item_one; break;
 808             }
 809             p_parent = p_parent->p_parent;
 810         }
 811         assert( p_toplay );
 812         pl_priv(p_playlist)->request.b_request = true;
 813         pl_priv(p_playlist)->request.i_skip = 0;
 814         pl_priv(p_playlist)->request.p_item = p_toplay;
 815         if( pl_priv(p_playlist)->p_input )
 816             input_Stop( pl_priv(p_playlist)->p_input, true );
 817         pl_priv(p_playlist)->request.i_status = PLAYLIST_RUNNING;
 818         vlc_cond_signal( &pl_priv(p_playlist)->signal );
 819     }
 820     /* Preparse if PREPARSE or SPREPARSE & not enough meta */
 821     char *psz_artist = input_item_GetArtist( p_item_cat->p_input );
 822     char *psz_album = input_item_GetAlbum( p_item_cat->p_input );
 823     if( pl_priv(p_playlist)->b_auto_preparse &&
 824           (i_mode & PLAYLIST_PREPARSE ||
 825           ( i_mode & PLAYLIST_SPREPARSE &&
 826             ( EMPTY_STR( psz_artist ) || ( EMPTY_STR( psz_album ) ) )
 827           ) ) )
 828         playlist_PreparseEnqueue( p_playlist, p_item_cat->p_input, pl_Locked );
 829     /* If we already have it, signal it */
 830     else if( !EMPTY_STR( psz_artist ) && !EMPTY_STR( psz_album ) )
 831         input_item_SetPreparsed( p_item_cat->p_input, true );
 832     free( psz_artist );
 833     free( psz_album );
 834 }
 835
 836 /* Add the playlist item to the requested node and fire a notification */
 837 static void AddItem( playlist_t *p_playlist, playlist_item_t *p_item,
 838                      playlist_item_t *p_node, int i_mode, int i_pos )
 839 {
 840     PL_ASSERT_LOCKED;
 841     ARRAY_APPEND(p_playlist->items, p_item);
 842     ARRAY_APPEND(p_playlist->all_items, p_item);
 843
 844     if( i_pos == PLAYLIST_END )
 845         playlist_NodeAppend( p_playlist, p_item, p_node );
 846     else
 847         playlist_NodeInsert( p_playlist, p_item, p_node, i_pos );
 848
 849     if( !pl_priv(p_playlist)->b_doing_ml )
 850         playlist_SendAddNotify( p_playlist, p_item->i_id, p_node->i_id,
 851                                  !( i_mode & PLAYLIST_NO_REBUILD ) );
 852 }
 853
 854 /* Actually convert an item to a node */
 855 static void ChangeToNode( playlist_t *p_playlist, playlist_item_t *p_item )
 856 {
 857     int i;
 858     if( p_item->i_children == -1 )
 859         p_item->i_children = 0;
 860
 861     /* Remove it from the array of available items */
 862     ARRAY_BSEARCH( p_playlist->items,->i_id, int, p_item->i_id, i );
 863     if( i != -1 )
 864         ARRAY_REMOVE( p_playlist->items, i );
 865 }
 866
 867 /* Do the actual removal */
 868 int playlist_DeleteItem( playlist_t * p_playlist, playlist_item_t *p_item,
 869                         bool b_stop )
 870 {
 871     int i;
 872     int i_id = p_item->i_id;
 873     PL_ASSERT_LOCKED;
 874
 875     if( p_item->i_children > -1 )
 876     {
 877         return playlist_NodeDelete( p_playlist, p_item, true, false );
 878     }
 879
 880     pl_priv(p_playlist)->b_reset_currently_playing = true;
 881     var_SetInteger( p_playlist, "playlist-item-deleted", i_id );
 882
 883     /* Remove the item from the bank */
 884     ARRAY_BSEARCH( p_playlist->all_items,->i_id, int, i_id, i );
 885     if( i != -1 )
 886         ARRAY_REMOVE( p_playlist->all_items, i );
 887
 888     ARRAY_BSEARCH( p_playlist->items,->i_id, int, i_id, i );
 889     if( i != -1 )
 890         ARRAY_REMOVE( p_playlist->items, i );
 891
 892     /* Check if it is the current item */
 893     if( get_current_status_item( p_playlist ) == p_item )
 894     {
 895         /* Stop it if we have to */
 896         if( b_stop )
 897         {
 898             playlist_Control( p_playlist, PLAYLIST_STOP, pl_Locked );
 899             msg_Info( p_playlist, "stopping playback" );
 900         }
 901         /* In any case, this item can't be the next one to be played ! */
 902         set_current_status_item( p_playlist, NULL );
 903     }
 904
 905     ARRAY_BSEARCH( p_playlist->current,->i_id, int, i_id, i );
 906     if( i != -1 )
 907         ARRAY_REMOVE( p_playlist->current, i );
 908
 909     PL_DEBUG( "deleting item `%s'", p_item->p_input->psz_name );
 910
 911     /* Remove the item from its parent */
 912     playlist_NodeRemoveItem( p_playlist, p_item, p_item->p_parent );
 913
 914     playlist_ItemRelease( p_item );
 915
 916     return VLC_SUCCESS;
 917 }