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 static int DeleteInner( playlist_t * p_playlist, playlist_item_t *p_item,
  39                         bool b_stop );
  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->i_id,
  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->i_id,
  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         b_play = b_play &&
  84             p_item_in_category == get_current_status_item( p_playlist );
  85
  86         /* If this item is already a node don't transform it */
  87         if( p_item_in_category->i_children == -1 )
  88         {
  89             p_item_in_category = playlist_ItemToNode( p_playlist,
  90                     p_item_in_category, pl_Locked );
  91             p_item_in_category->p_input->i_type = ITEM_TYPE_PLAYLIST;
  92         }
  93
  94         int i_ret = playlist_BothAddInput( p_playlist, p_child,
  95                 p_item_in_category,
  96                 PLAYLIST_APPEND | PLAYLIST_SPREPARSE , PLAYLIST_END,
  97                 NULL, NULL, pl_Locked );
  98
  99         if( i_ret == VLC_SUCCESS && b_play )
 100         {
 101             playlist_Control( p_playlist, PLAYLIST_VIEWPLAY,
 102                           pl_Locked, p_item_in_category, NULL );
 103         }
 104     }
 105
 106     PL_UNLOCK;
 107
 108 }
 109
 110 /*****************************************************************************
 111  * An input item's meta or duration has changed (Event Callback)
 112  *****************************************************************************/
 113 static void input_item_changed( const vlc_event_t * p_event,
 114                                 void * user_data )
 115 {
 116     (void)p_event;
 117     playlist_item_t * p_item = user_data;
 118     var_SetInteger( p_item->p_playlist, "item-change", p_item->i_id );
 119 }
 120
 121 /*****************************************************************************
 122  * Listen to vlc_InputItemAddSubItem event
 123  *****************************************************************************/
 124 static void install_input_item_observer( playlist_item_t * p_item )
 125 {
 126     vlc_event_manager_t * p_em = &p_item->p_input->event_manager;
 127     vlc_event_attach( p_em, vlc_InputItemSubItemAdded,
 128                       input_item_subitem_added, p_item );
 129     vlc_event_attach( p_em, vlc_InputItemDurationChanged,
 130                       input_item_changed, p_item );
 131     vlc_event_attach( p_em, vlc_InputItemMetaChanged,
 132                       input_item_changed, p_item );
 133     vlc_event_attach( p_em, vlc_InputItemNameChanged,
 134                       input_item_changed, p_item );
 135     vlc_event_attach( p_em, vlc_InputItemInfoChanged,
 136                       input_item_changed, p_item );
 137     vlc_event_attach( p_em, vlc_InputItemErrorWhenReadingChanged,
 138                       input_item_changed, p_item );
 139 }
 140
 141 static void uninstall_input_item_observer( playlist_item_t * p_item )
 142 {
 143     vlc_event_manager_t * p_em = &p_item->p_input->event_manager;
 144     vlc_event_detach( p_em, vlc_InputItemSubItemAdded,
 145                       input_item_subitem_added, p_item );
 146     vlc_event_detach( p_em, vlc_InputItemMetaChanged,
 147                       input_item_changed, p_item );
 148     vlc_event_detach( p_em, vlc_InputItemDurationChanged,
 149                       input_item_changed, p_item );
 150     vlc_event_detach( p_em, vlc_InputItemNameChanged,
 151                       input_item_changed, p_item );
 152     vlc_event_detach( p_em, vlc_InputItemInfoChanged,
 153                       input_item_changed, p_item );
 154     vlc_event_detach( p_em, vlc_InputItemErrorWhenReadingChanged,
 155                       input_item_changed, p_item );
 156 }
 157
 158 /*****************************************************************************
 159  * Playlist item creation
 160  *****************************************************************************/
 161 playlist_item_t *playlist_ItemNewFromInput( playlist_t *p_playlist,
 162                                               input_item_t *p_input )
 163 {
 164     playlist_item_t* p_item = malloc( sizeof( playlist_item_t ) );
 165     if( !p_item )
 166         return NULL;
 167
 168     assert( p_input );
 169
 170     p_item->p_input = p_input;
 171     vlc_gc_incref( p_item->p_input );
 172
 173     p_item->i_id = ++pl_priv(p_playlist)->i_last_playlist_id;
 174
 175     p_item->p_parent = NULL;
 176     p_item->i_children = -1;
 177     p_item->pp_children = NULL;
 178     p_item->i_flags = 0;
 179     p_item->p_playlist = p_playlist;
 180
 181     install_input_item_observer( p_item );
 182
 183     return p_item;
 184 }
 185
 186 /***************************************************************************
 187  * Playlist item destruction
 188  ***************************************************************************/
 189
 190 /**
 191  * Release an item
 192  *
 193  * \param p_item item to delete
 194  * \return VLC_SUCCESS
 195 */
 196 int playlist_ItemRelease( playlist_item_t *p_item )
 197 {
 198     /* For the assert */
 199     playlist_t *p_playlist = p_item->p_playlist;
 200     PL_ASSERT_LOCKED;
 201
 202     /* Surprise, we can't actually do more because we
 203      * don't do refcounting, or eauivalent.
 204      * Because item are not only accessed by their id
 205      * using playlist_item outside the PL_LOCK isn't safe.
 206      * Most of the modules does that.
 207      *
 208      * Who wants to add proper memory management? */
 209     uninstall_input_item_observer( p_item );
 210     ARRAY_APPEND( pl_priv(p_playlist)->items_to_delete, p_item);
 211     return VLC_SUCCESS;
 212 }
 213
 214 /**
 215  * Delete input item
 216  *
 217  * Remove an input item when it appears from a root playlist item
 218  * \param p_playlist playlist object
 219  * \param i_input_id id of the input to delete
 220  * \param p_root root playlist item
 221  * \param b_do_stop must stop or not the playlist
 222  * \return VLC_SUCCESS or VLC_EGENERIC
 223 */
 224 static int DeleteFromInput( playlist_t *p_playlist, int i_input_id,
 225                             playlist_item_t *p_root, bool b_do_stop )
 226 {
 227     int i;
 228     PL_ASSERT_LOCKED;
 229     for( i = 0 ; i< p_root->i_children ; i++ )
 230     {
 231         if( p_root->pp_children[i]->i_children == -1 &&
 232             p_root->pp_children[i]->p_input->i_id == i_input_id )
 233         {
 234             DeleteInner( p_playlist, p_root->pp_children[i], b_do_stop );
 235             return VLC_SUCCESS;
 236         }
 237         else if( p_root->pp_children[i]->i_children >= 0 )
 238         {
 239             int i_ret = DeleteFromInput( p_playlist, i_input_id,
 240                                          p_root->pp_children[i], b_do_stop );
 241             if( i_ret == VLC_SUCCESS ) return VLC_SUCCESS;
 242         }
 243     }
 244     return VLC_EGENERIC;
 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 i_input_id id of 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, int i_input_id,
 258                                       playlist_item_t *p_root, bool b_locked )
 259 {
 260     int i_ret;
 261     PL_LOCK_IF( !b_locked );
 262     i_ret = DeleteFromInput( p_playlist, i_input_id,
 263                              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 i_input_id id of 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, int i_input_id,
 278                               bool b_locked )
 279 {
 280     int i_ret1, i_ret2;
 281     PL_LOCK_IF( !b_locked );
 282     i_ret1 = DeleteFromInput( p_playlist, i_input_id,
 283                              p_playlist->p_root_category, true );
 284     i_ret2 = DeleteFromInput( p_playlist, i_input_id,
 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 DeleteInner( 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 The id of the playlist item
 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 The id of the playlist item
 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, unsigned i_option_flags,
 371                      bool b_playlist, bool b_locked )
 372 {
 373     int i_ret;
 374     input_item_t *p_input = input_item_NewExt( p_playlist, psz_uri, psz_name,
 375                                               i_options, ppsz_options, i_option_flags,
 376                                               i_duration );
 377
 378     i_ret = playlist_AddInput( p_playlist, p_input, i_mode, i_pos, b_playlist,
 379                                b_locked );
 380     int i_id = (i_ret == VLC_SUCCESS) ? p_input->i_id : -1;
 381
 382     vlc_gc_decref( p_input );
 383
 384     return i_id;
 385 }
 386
 387 /**
 388  * Add an input item to the playlist node
 389  *
 390  * \param p_playlist the playlist to add into
 391  * \param p_input the input item to add
 392  * \param i_mode the mode used when adding
 393  * \param i_pos the position in the playlist where to add. If this is
 394  *        PLAYLIST_END the item will be added at the end of the playlist
 395  *        regardless of its size
 396  * \param b_playlist TRUE for playlist, FALSE for media library
 397  * \param b_locked TRUE if the playlist is locked
 398  * \return VLC_SUCCESS or VLC_ENOMEM or VLC_EGENERIC
 399 */
 400 int playlist_AddInput( playlist_t* p_playlist, input_item_t *p_input,
 401                        int i_mode, int i_pos, bool b_playlist,
 402                        bool b_locked )
 403 {
 404     playlist_item_t *p_item_cat, *p_item_one;
 405     if( p_playlist->b_die ) return VLC_EGENERIC;
 406     if( !pl_priv(p_playlist)->b_doing_ml )
 407         PL_DEBUG( "adding item `%s' ( %s )", p_input->psz_name,
 408                                              p_input->psz_uri );
 409
 410     PL_LOCK_IF( !b_locked );
 411
 412     /* Add to ONELEVEL */
 413     p_item_one = playlist_ItemNewFromInput( p_playlist, p_input );
 414     if( p_item_one == NULL ) return VLC_ENOMEM;
 415     AddItem( p_playlist, p_item_one,
 416              b_playlist ? p_playlist->p_local_onelevel :
 417                           p_playlist->p_ml_onelevel , i_mode, i_pos );
 418
 419     /* Add to CATEGORY */
 420     p_item_cat = playlist_ItemNewFromInput( p_playlist, p_input );
 421     if( p_item_cat == NULL ) return VLC_ENOMEM;
 422     AddItem( p_playlist, p_item_cat,
 423              b_playlist ? p_playlist->p_local_category :
 424                           p_playlist->p_ml_category , i_mode, i_pos );
 425
 426     GoAndPreparse( p_playlist, i_mode, p_item_cat, p_item_one );
 427
 428     PL_UNLOCK_IF( !b_locked );
 429     return VLC_SUCCESS;
 430 }
 431
 432 /**
 433  * Add input
 434  *
 435  * Add an input item to p_direct_parent in the category tree, and to the
 436  * matching top category in onelevel
 437  * \param p_playlist the playlist to add into
 438  * \param p_input the input item to add
 439  * \param p_direct_parent the parent item to add into
 440  * \param i_mode the mode used when adding
 441  * \param i_pos the position in the playlist where to add. If this is
 442  *        PLAYLIST_END the item will be added at the end of the playlist
 443  *        regardless of its size
 444  * \param i_cat id of the items category
 445  * \param i_one id of the item onelevel category
 446  * \param b_locked TRUE if the playlist is locked
 447  * \return VLC_SUCCESS if success, VLC_EGENERIC if fail, VLC_ENOMEM if OOM
 448  */
 449 int playlist_BothAddInput( playlist_t *p_playlist,
 450                            input_item_t *p_input,
 451                            playlist_item_t *p_direct_parent,
 452                            int i_mode, int i_pos,
 453                            int *i_cat, int *i_one, bool b_locked )
 454 {
 455     playlist_item_t *p_item_cat, *p_item_one, *p_up;
 456     int i_top;
 457     assert( p_input );
 458
 459     if( !vlc_object_alive( p_playlist ) )
 460         return VLC_EGENERIC;
 461
 462     PL_LOCK_IF( !b_locked );
 463
 464     /* Add to category */
 465     p_item_cat = playlist_ItemNewFromInput( p_playlist, p_input );
 466     if( p_item_cat == NULL ) return VLC_ENOMEM;
 467     AddItem( p_playlist, p_item_cat, p_direct_parent, i_mode, i_pos );
 468
 469     /* Add to onelevel */
 470     /** \todo make a faster case for ml import */
 471     p_item_one = playlist_ItemNewFromInput( p_playlist, p_input );
 472     if( p_item_one == NULL ) return VLC_ENOMEM;
 473
 474     p_up = p_direct_parent;
 475     while( p_up->p_parent != p_playlist->p_root_category )
 476     {
 477         p_up = p_up->p_parent;
 478     }
 479     for( i_top = 0 ; i_top < p_playlist->p_root_onelevel->i_children; i_top++ )
 480     {
 481         if( p_playlist->p_root_onelevel->pp_children[i_top]->p_input->i_id ==
 482                              p_up->p_input->i_id )
 483         {
 484             AddItem( p_playlist, p_item_one,
 485                      p_playlist->p_root_onelevel->pp_children[i_top],
 486                      i_mode, i_pos );
 487             break;
 488         }
 489     }
 490     GoAndPreparse( p_playlist, i_mode, p_item_cat, p_item_one );
 491
 492     if( i_cat ) *i_cat = p_item_cat->i_id;
 493     if( i_one ) *i_one = p_item_one->i_id;
 494
 495     PL_UNLOCK_IF( !b_locked );
 496     return VLC_SUCCESS;
 497 }
 498
 499 /**
 500  * Add an input item to a given node
 501  *
 502  * \param p_playlist the playlist to add into
 503  * \param p_input the input item to add
 504  * \param p_parent the parent item to add into
 505  * \param i_mode the mode used when addin
 506  * \param i_pos the position in the playlist where to add. If this is
 507  *        PLAYLIST_END the item will be added at the end of the playlist
 508  *        regardless of its size
 509  * \param b_locked TRUE if the playlist is locked
 510  * \return the new playlist item
 511  */
 512 playlist_item_t * playlist_NodeAddInput( playlist_t *p_playlist,
 513                                          input_item_t *p_input,
 514                                          playlist_item_t *p_parent,
 515                                          int i_mode, int i_pos,
 516                                          bool b_locked )
 517 {
 518     playlist_item_t *p_item;
 519     assert( p_input );
 520     assert( p_parent && p_parent->i_children != -1 );
 521
 522     if( p_playlist->b_die )
 523         return NULL;
 524     PL_LOCK_IF( !b_locked );
 525
 526     p_item = playlist_ItemNewFromInput( p_playlist, p_input );
 527     if( p_item == NULL ) return NULL;
 528     AddItem( p_playlist, p_item, p_parent, i_mode, i_pos );
 529
 530     PL_UNLOCK_IF( !b_locked );
 531
 532     return p_item;
 533 }
 534
 535 /*****************************************************************************
 536  * Playlist item misc operations
 537  *****************************************************************************/
 538
 539 /**
 540  * Item to node
 541  *
 542  * Transform an item to a node. Return the node in the category tree, or NULL
 543  * if not found there
 544  * This function must be entered without the playlist lock
 545  * \param p_playlist the playlist object
 546  * \param p_item the item to transform
 547  * \param b_locked TRUE if the playlist is locked
 548  * \return the item transform in a node
 549  */
 550 playlist_item_t *playlist_ItemToNode( playlist_t *p_playlist,
 551                                       playlist_item_t *p_item,
 552                                       bool b_locked )
 553 {
 554
 555     playlist_item_t *p_item_in_category;
 556     /* What we do
 557      * Find the input in CATEGORY.
 558      *  - If we find it
 559      *    - change it to node
 560      *    - we'll return it at the end
 561      *    - If we are a direct child of onelevel root, change to node, else
 562      *      delete the input from ONELEVEL
 563      *  - If we don't find it, just change to node (we are probably in VLM)
 564      *    and return NULL
 565      *
 566      * If we were in ONELEVEL, we thus retrieve the node in CATEGORY (will be
 567      * useful for later BothAddInput )
 568      */
 569
 570     PL_LOCK_IF( !b_locked );
 571
 572     /* Fast track the media library, no time to loose */
 573     if( p_item == p_playlist->p_ml_category ) {
 574         PL_UNLOCK_IF( !b_locked );
 575         return p_item;
 576     }
 577
 578     /** \todo First look if we don't already have it */
 579     p_item_in_category = playlist_ItemFindFromInputAndRoot(
 580                                             p_playlist, p_item->p_input->i_id,
 581                                             p_playlist->p_root_category,
 582                                             true );
 583
 584     if( p_item_in_category )
 585     {
 586         playlist_item_t *p_item_in_one = playlist_ItemFindFromInputAndRoot(
 587                                             p_playlist, p_item->p_input->i_id,
 588                                             p_playlist->p_root_onelevel,
 589                                             true );
 590         assert( p_item_in_one );
 591
 592         /* We already have it, and there is nothing more to do */
 593         ChangeToNode( p_playlist, p_item_in_category );
 594
 595         /* Item in one is a root, change it to node */
 596         if( p_item_in_one->p_parent == p_playlist->p_root_onelevel )
 597             ChangeToNode( p_playlist, p_item_in_one );
 598         else
 599         {
 600             playlist_item_t *p_status_item = get_current_status_item( p_playlist );
 601             playlist_item_t *p_status_node = get_current_status_node( p_playlist );
 602             if( p_item_in_one == p_status_item )
 603             {
 604                 /* We're deleting the current playlist item. Update
 605                  * the playlist object to point at the previous item
 606                  * so the playlist won't be restarted */
 607                 playlist_item_t *p_prev_status_item = NULL;
 608                 int i = 0;
 609                 while( i < p_status_node->i_children &&
 610                        p_status_node->pp_children[i] != p_status_item )
 611                 {
 612                     p_prev_status_item = p_status_node->pp_children[i];
 613                     i++;
 614                 }
 615                 if( i == p_status_node->i_children )
 616                     p_prev_status_item = NULL;
 617                 if( p_prev_status_item )
 618                     set_current_status_item( p_playlist, p_prev_status_item );
 619             }
 620             DeleteFromInput( p_playlist, p_item_in_one->p_input->i_id,
 621                              p_playlist->p_root_onelevel, false );
 622         }
 623         pl_priv(p_playlist)->b_reset_currently_playing = true;
 624         vlc_cond_signal( &pl_priv(p_playlist)->signal );
 625         var_SetInteger( p_playlist, "item-change", p_item_in_category->
 626                                                         p_input->i_id );
 627         PL_UNLOCK_IF( !b_locked );
 628         return p_item_in_category;
 629     }
 630     else
 631     {
 632         ChangeToNode( p_playlist, p_item );
 633         PL_UNLOCK_IF( !b_locked );
 634         return p_item;
 635     }
 636 }
 637
 638 /**
 639  * Find an item within a root, given its input id.
 640  *
 641  * \param p_playlist the playlist object
 642  * \param i_input_id id of the input
 643  * \param p_root root playlist item
 644  * \param b_items_only TRUE if we want the item himself
 645  * \return the first found item, or NULL if not found
 646  */
 647 playlist_item_t *playlist_ItemFindFromInputAndRoot( playlist_t *p_playlist,
 648                                                     int i_input_id,
 649                                                     playlist_item_t *p_root,
 650                                                     bool b_items_only )
 651 {
 652     int i;
 653     for( i = 0 ; i< p_root->i_children ; i++ )
 654     {
 655         if( ( b_items_only ? p_root->pp_children[i]->i_children == -1 : 1 ) &&
 656             p_root->pp_children[i]->p_input->i_id == i_input_id )
 657         {
 658             return p_root->pp_children[i];
 659         }
 660         else if( p_root->pp_children[i]->i_children >= 0 )
 661         {
 662             playlist_item_t *p_search =
 663                  playlist_ItemFindFromInputAndRoot( p_playlist, i_input_id,
 664                                                     p_root->pp_children[i],
 665                                                     b_items_only );
 666             if( p_search ) return p_search;
 667         }
 668     }
 669     return NULL;
 670 }
 671
 672
 673 static int TreeMove( playlist_t *p_playlist, playlist_item_t *p_item,
 674                      playlist_item_t *p_node, int i_newpos )
 675 {
 676     int j;
 677     playlist_item_t *p_detach = p_item->p_parent;
 678     (void)p_playlist;
 679
 680     if( p_node->i_children == -1 ) return VLC_EGENERIC;
 681
 682     for( j = 0; j < p_detach->i_children; j++ )
 683     {
 684          if( p_detach->pp_children[j] == p_item ) break;
 685     }
 686     REMOVE_ELEM( p_detach->pp_children, p_detach->i_children, j );
 687
 688     /* If j < i_newpos, we are moving the element from the top to the
 689      * down of the playlist. So when removing the element we have
 690      * to change the position as we loose one element
 691      */
 692     if( j < i_newpos )
 693         i_newpos--;
 694
 695     /* Attach to new parent */
 696     INSERT_ELEM( p_node->pp_children, p_node->i_children, i_newpos, p_item );
 697     p_item->p_parent = p_node;
 698
 699     return VLC_SUCCESS;
 700 }
 701
 702 /**
 703  * Moves an item
 704  *
 705  * This function must be entered with the playlist lock
 706  *
 707  * \param p_playlist the playlist
 708  * \param p_item the item to move
 709  * \param p_node the new parent of the item
 710  * \param i_newpos the new position under this new parent
 711  * \return VLC_SUCCESS or an error
 712  */
 713 int playlist_TreeMove( playlist_t * p_playlist, playlist_item_t *p_item,
 714                        playlist_item_t *p_node, int i_newpos )
 715 {
 716     int i_ret;
 717     PL_ASSERT_LOCKED;
 718
 719     /* Drop on a top level node. Move in the two trees */
 720     if( p_node->p_parent == p_playlist->p_root_category ||
 721         p_node->p_parent == p_playlist->p_root_onelevel )
 722     {
 723         /* Fixme: avoid useless lookups but we need some clean helpers */
 724         {
 725             /* Fixme: if we try to move a node on a top-level node, it will
 726              * fail because the node doesn't exist in onelevel and we will
 727              * do some shit in onelevel. We should recursively move all items
 728              * within the node */
 729             playlist_item_t *p_node_onelevel;
 730             playlist_item_t *p_item_onelevel;
 731             p_node_onelevel = playlist_ItemFindFromInputAndRoot( p_playlist,
 732                                                 p_node->p_input->i_id,
 733                                                 p_playlist->p_root_onelevel,
 734                                                 false );
 735             p_item_onelevel = playlist_ItemFindFromInputAndRoot( p_playlist,
 736                                                 p_item->p_input->i_id,
 737                                                 p_playlist->p_root_onelevel,
 738                                                 false );
 739             if( p_node_onelevel && p_item_onelevel )
 740                 TreeMove( p_playlist, p_item_onelevel, p_node_onelevel, i_newpos );
 741         }
 742         {
 743             playlist_item_t *p_node_category;
 744             playlist_item_t *p_item_category;
 745             p_node_category = playlist_ItemFindFromInputAndRoot( p_playlist,
 746                                                 p_node->p_input->i_id,
 747                                                 p_playlist->p_root_category,
 748                                                 false );
 749             p_item_category = playlist_ItemFindFromInputAndRoot( p_playlist,
 750                                                 p_item->p_input->i_id,
 751                                                 p_playlist->p_root_category,
 752                                                 false );
 753             if( p_node_category && p_item_category )
 754                 TreeMove( p_playlist, p_item_category, p_node_category, 0 );
 755         }
 756         i_ret = VLC_SUCCESS;
 757     }
 758     else
 759         i_ret = TreeMove( p_playlist, p_item, p_node, i_newpos );
 760     pl_priv(p_playlist)->b_reset_currently_playing = true;
 761     vlc_cond_signal( &pl_priv(p_playlist)->signal );
 762     return i_ret;
 763 }
 764
 765 /**
 766  * Send a notification that an item has been added to a node
 767  *
 768  * \param p_playlist the playlist object
 769  * \param i_item_id id of the item added
 770  * \param i_node_id id of the node in wich the item was added
 771  * \param b_signal TRUE if the function must send a signal
 772  * \return nothing
 773  */
 774 void playlist_SendAddNotify( playlist_t *p_playlist, int i_item_id,
 775                              int i_node_id, bool b_signal )
 776 {
 777     vlc_value_t val;
 778     PL_ASSERT_LOCKED;
 779
 780     playlist_add_t *p_add = (playlist_add_t *)malloc( sizeof( playlist_add_t) );
 781     if( !p_add )
 782         return;
 783
 784     p_add->i_item = i_item_id;
 785     p_add->i_node = i_node_id;
 786     val.p_address = p_add;
 787     pl_priv(p_playlist)->b_reset_currently_playing = true;
 788     if( b_signal )
 789         vlc_cond_signal( &pl_priv(p_playlist)->signal );
 790
 791     var_Set( p_playlist, "item-append", val );
 792     free( p_add );
 793 }
 794
 795 /***************************************************************************
 796  * The following functions are local
 797  ***************************************************************************/
 798
 799 /* Enqueue an item for preparsing, and play it, if needed */
 800 static void GoAndPreparse( playlist_t *p_playlist, int i_mode,
 801                            playlist_item_t *p_item_cat,
 802                            playlist_item_t *p_item_one )
 803 {
 804     PL_ASSERT_LOCKED;
 805     if( (i_mode & PLAYLIST_GO ) )
 806     {
 807         playlist_item_t *p_parent = p_item_one;
 808         playlist_item_t *p_toplay = NULL;
 809         while( p_parent )
 810         {
 811             if( p_parent == p_playlist->p_root_category )
 812             {
 813                 p_toplay = p_item_cat; break;
 814             }
 815             else if( p_parent == p_playlist->p_root_onelevel )
 816             {
 817                 p_toplay = p_item_one; break;
 818             }
 819             p_parent = p_parent->p_parent;
 820         }
 821         assert( p_toplay );
 822         pl_priv(p_playlist)->request.b_request = true;
 823         pl_priv(p_playlist)->request.i_skip = 0;
 824         pl_priv(p_playlist)->request.p_item = p_toplay;
 825         if( pl_priv(p_playlist)->p_input )
 826             input_StopThread( pl_priv(p_playlist)->p_input );
 827         pl_priv(p_playlist)->request.i_status = PLAYLIST_RUNNING;
 828         vlc_cond_signal( &pl_priv(p_playlist)->signal );
 829     }
 830     /* Preparse if PREPARSE or SPREPARSE & not enough meta */
 831     char *psz_artist = input_item_GetArtist( p_item_cat->p_input );
 832     char *psz_album = input_item_GetAlbum( p_item_cat->p_input );
 833     if( pl_priv(p_playlist)->b_auto_preparse &&
 834           (i_mode & PLAYLIST_PREPARSE ||
 835           ( i_mode & PLAYLIST_SPREPARSE &&
 836             ( EMPTY_STR( psz_artist ) || ( EMPTY_STR( psz_album ) ) )
 837           ) ) )
 838         playlist_PreparseEnqueue( p_playlist, p_item_cat->p_input, pl_Locked );
 839     /* If we already have it, signal it */
 840     else if( !EMPTY_STR( psz_artist ) && !EMPTY_STR( psz_album ) )
 841         input_item_SetPreparsed( p_item_cat->p_input, true );
 842     free( psz_artist );
 843     free( psz_album );
 844 }
 845
 846 /* Add the playlist item to the requested node and fire a notification */
 847 static void AddItem( playlist_t *p_playlist, playlist_item_t *p_item,
 848                      playlist_item_t *p_node, int i_mode, int i_pos )
 849 {
 850     PL_ASSERT_LOCKED;
 851     ARRAY_APPEND(p_playlist->items, p_item);
 852     ARRAY_APPEND(p_playlist->all_items, p_item);
 853
 854     if( i_pos == PLAYLIST_END )
 855         playlist_NodeAppend( p_playlist, p_item, p_node );
 856     else
 857         playlist_NodeInsert( p_playlist, p_item, p_node, i_pos );
 858
 859     if( !pl_priv(p_playlist)->b_doing_ml )
 860         playlist_SendAddNotify( p_playlist, p_item->i_id, p_node->i_id,
 861                                  !( i_mode & PLAYLIST_NO_REBUILD ) );
 862 }
 863
 864 /* Actually convert an item to a node */
 865 static void ChangeToNode( playlist_t *p_playlist, playlist_item_t *p_item )
 866 {
 867     int i;
 868     if( p_item->i_children == -1 )
 869         p_item->i_children = 0;
 870
 871     /* Remove it from the array of available items */
 872     ARRAY_BSEARCH( p_playlist->items,->i_id, int, p_item->i_id, i );
 873     if( i != -1 )
 874         ARRAY_REMOVE( p_playlist->items, i );
 875 }
 876
 877 /* Do the actual removal */
 878 static int DeleteInner( playlist_t * p_playlist, playlist_item_t *p_item,
 879                         bool b_stop )
 880 {
 881     int i;
 882     int i_id = p_item->i_id;
 883     PL_ASSERT_LOCKED;
 884
 885     if( p_item->i_children > -1 )
 886     {
 887         return playlist_NodeDelete( p_playlist, p_item, true, false );
 888     }
 889     pl_priv(p_playlist)->b_reset_currently_playing = true;
 890     var_SetInteger( p_playlist, "item-deleted", i_id );
 891
 892     /* Remove the item from the bank */
 893     ARRAY_BSEARCH( p_playlist->all_items,->i_id, int, i_id, i );
 894     if( i != -1 )
 895         ARRAY_REMOVE( p_playlist->all_items, i );
 896
 897     ARRAY_BSEARCH( p_playlist->items,->i_id, int, i_id, i );
 898     if( i != -1 )
 899         ARRAY_REMOVE( p_playlist->items, i );
 900
 901     /* Check if it is the current item */
 902     if( get_current_status_item( p_playlist ) == p_item )
 903     {
 904         /* Hack we don't call playlist_Control for lock reasons */
 905         if( b_stop )
 906         {
 907             pl_priv(p_playlist)->request.i_status = PLAYLIST_STOPPED;
 908             pl_priv(p_playlist)->request.b_request = true;
 909             pl_priv(p_playlist)->request.p_item = NULL;
 910             msg_Info( p_playlist, "stopping playback" );
 911             vlc_cond_signal( &pl_priv(p_playlist)->signal );
 912         }
 913     }
 914
 915     PL_DEBUG( "deleting item `%s'", p_item->p_input->psz_name );
 916
 917     /* Remove the item from its parent */
 918     playlist_NodeRemoveItem( p_playlist, p_item, p_item->p_parent );
 919
 920     playlist_ItemRelease( p_item );
 921
 922     return VLC_SUCCESS;
 923 }