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                                                     pl_Locked );
 320     if( !p_item ) return VLC_EGENERIC;
 321     return DeleteInner( p_playlist, p_item, true );
 322 }
 323
 324 /***************************************************************************
 325  * Playlist item addition
 326  ***************************************************************************/
 327 /**
 328  * Playlist add
 329  *
 330  * Add an item to the playlist or the media library
 331  * \param p_playlist the playlist to add into
 332  * \param psz_uri the mrl to add to the playlist
 333  * \param psz_name a text giving a name or description of this item
 334  * \param i_mode the mode used when adding
 335  * \param i_pos the position in the playlist where to add. If this is
 336  *        PLAYLIST_END the item will be added at the end of the playlist
 337  *        regardless of its size
 338  * \param b_playlist TRUE for playlist, FALSE for media library
 339  * \param b_locked TRUE if the playlist is locked
 340  * \return The id of the playlist item
 341  */
 342 int playlist_Add( playlist_t *p_playlist, const char *psz_uri,
 343                   const char *psz_name, int i_mode, int i_pos,
 344                   bool b_playlist, bool b_locked )
 345 {
 346     return playlist_AddExt( p_playlist, psz_uri, psz_name,
 347                             i_mode, i_pos, -1, NULL, 0, b_playlist, b_locked );
 348 }
 349
 350 /**
 351  * Add a MRL into the playlist or the media library, duration and options given
 352  *
 353  * \param p_playlist the playlist to add into
 354  * \param psz_uri the mrl to add to the playlist
 355  * \param psz_name a text giving a name or description of this item
 356  * \param i_mode the mode used when adding
 357  * \param i_pos the position in the playlist where to add. If this is
 358  *        PLAYLIST_END the item will be added at the end of the playlist
 359  *        regardless of its size
 360  * \param i_duration length of the item in milliseconds.
 361  * \param ppsz_options an array of options
 362  * \param i_options the number of options
 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, const char *const *ppsz_options,
 370                      int i_options, bool b_playlist, bool b_locked )
 371 {
 372     int i_ret;
 373     input_item_t *p_input = input_item_NewExt( p_playlist, psz_uri, psz_name,
 374                                               i_options, ppsz_options, VLC_INPUT_OPTION_TRUSTED,
 375                                               i_duration );
 376
 377     i_ret = playlist_AddInput( p_playlist, p_input, i_mode, i_pos, b_playlist,
 378                                b_locked );
 379     int i_id = (i_ret == VLC_SUCCESS) ? p_input->i_id : -1;
 380
 381     vlc_gc_decref( p_input );
 382
 383     return i_id;
 384 }
 385
 386 /**
 387  * Add an input item to the playlist node
 388  *
 389  * \param p_playlist the playlist to add into
 390  * \param p_input the input item to add
 391  * \param i_mode the mode used when adding
 392  * \param i_pos the position in the playlist where to add. If this is
 393  *        PLAYLIST_END the item will be added at the end of the playlist
 394  *        regardless of its size
 395  * \param b_playlist TRUE for playlist, FALSE for media library
 396  * \param b_locked TRUE if the playlist is locked
 397  * \return VLC_SUCCESS or VLC_ENOMEM or VLC_EGENERIC
 398 */
 399 int playlist_AddInput( playlist_t* p_playlist, input_item_t *p_input,
 400                        int i_mode, int i_pos, bool b_playlist,
 401                        bool b_locked )
 402 {
 403     playlist_item_t *p_item_cat, *p_item_one;
 404     if( p_playlist->b_die ) return VLC_EGENERIC;
 405     if( !pl_priv(p_playlist)->b_doing_ml )
 406         PL_DEBUG( "adding item `%s' ( %s )", p_input->psz_name,
 407                                              p_input->psz_uri );
 408
 409     PL_LOCK_IF( !b_locked );
 410
 411     /* Add to ONELEVEL */
 412     p_item_one = playlist_ItemNewFromInput( p_playlist, p_input );
 413     if( p_item_one == NULL ) return VLC_ENOMEM;
 414     AddItem( p_playlist, p_item_one,
 415              b_playlist ? p_playlist->p_local_onelevel :
 416                           p_playlist->p_ml_onelevel , i_mode, i_pos );
 417
 418     /* Add to CATEGORY */
 419     p_item_cat = playlist_ItemNewFromInput( p_playlist, p_input );
 420     if( p_item_cat == NULL ) return VLC_ENOMEM;
 421     AddItem( p_playlist, p_item_cat,
 422              b_playlist ? p_playlist->p_local_category :
 423                           p_playlist->p_ml_category , i_mode, i_pos );
 424
 425     GoAndPreparse( p_playlist, i_mode, p_item_cat, p_item_one );
 426
 427     PL_UNLOCK_IF( !b_locked );
 428     return VLC_SUCCESS;
 429 }
 430
 431 /**
 432  * Add input
 433  *
 434  * Add an input item to p_direct_parent in the category tree, and to the
 435  * matching top category in onelevel
 436  * \param p_playlist the playlist to add into
 437  * \param p_input the input item to add
 438  * \param p_direct_parent the parent item to add into
 439  * \param i_mode the mode used when adding
 440  * \param i_pos the position in the playlist where to add. If this is
 441  *        PLAYLIST_END the item will be added at the end of the playlist
 442  *        regardless of its size
 443  * \param i_cat id of the items category
 444  * \param i_one id of the item onelevel category
 445  * \param b_locked TRUE if the playlist is locked
 446  * \return VLC_SUCCESS if success, VLC_EGENERIC if fail, VLC_ENOMEM if OOM
 447  */
 448 int playlist_BothAddInput( playlist_t *p_playlist,
 449                            input_item_t *p_input,
 450                            playlist_item_t *p_direct_parent,
 451                            int i_mode, int i_pos,
 452                            int *i_cat, int *i_one, bool b_locked )
 453 {
 454     playlist_item_t *p_item_cat, *p_item_one, *p_up;
 455     int i_top;
 456     assert( p_input );
 457
 458     if( !vlc_object_alive( p_playlist ) )
 459         return VLC_EGENERIC;
 460
 461     PL_LOCK_IF( !b_locked );
 462
 463     /* Add to category */
 464     p_item_cat = playlist_ItemNewFromInput( p_playlist, p_input );
 465     if( p_item_cat == NULL ) return VLC_ENOMEM;
 466     AddItem( p_playlist, p_item_cat, p_direct_parent, i_mode, i_pos );
 467
 468     /* Add to onelevel */
 469     /** \todo make a faster case for ml import */
 470     p_item_one = playlist_ItemNewFromInput( p_playlist, p_input );
 471     if( p_item_one == NULL ) return VLC_ENOMEM;
 472
 473     p_up = p_direct_parent;
 474     while( p_up->p_parent != p_playlist->p_root_category )
 475     {
 476         p_up = p_up->p_parent;
 477     }
 478     for( i_top = 0 ; i_top < p_playlist->p_root_onelevel->i_children; i_top++ )
 479     {
 480         if( p_playlist->p_root_onelevel->pp_children[i_top]->p_input->i_id ==
 481                              p_up->p_input->i_id )
 482         {
 483             AddItem( p_playlist, p_item_one,
 484                      p_playlist->p_root_onelevel->pp_children[i_top],
 485                      i_mode, i_pos );
 486             break;
 487         }
 488     }
 489     GoAndPreparse( p_playlist, i_mode, p_item_cat, p_item_one );
 490
 491     if( i_cat ) *i_cat = p_item_cat->i_id;
 492     if( i_one ) *i_one = p_item_one->i_id;
 493
 494     PL_UNLOCK_IF( !b_locked );
 495     return VLC_SUCCESS;
 496 }
 497
 498 /**
 499  * Add an input item to a given node
 500  *
 501  * \param p_playlist the playlist to add into
 502  * \param p_input the input item to add
 503  * \param p_parent the parent item to add into
 504  * \param i_mode the mode used when addin
 505  * \param i_pos the position in the playlist where to add. If this is
 506  *        PLAYLIST_END the item will be added at the end of the playlist
 507  *        regardless of its size
 508  * \param b_locked TRUE if the playlist is locked
 509  * \return the new playlist item
 510  */
 511 playlist_item_t * playlist_NodeAddInput( playlist_t *p_playlist,
 512                                          input_item_t *p_input,
 513                                          playlist_item_t *p_parent,
 514                                          int i_mode, int i_pos,
 515                                          bool b_locked )
 516 {
 517     playlist_item_t *p_item;
 518     assert( p_input );
 519     assert( p_parent && p_parent->i_children != -1 );
 520
 521     if( p_playlist->b_die )
 522         return NULL;
 523     PL_LOCK_IF( !b_locked );
 524
 525     p_item = playlist_ItemNewFromInput( p_playlist, p_input );
 526     if( p_item == NULL ) return NULL;
 527     AddItem( p_playlist, p_item, p_parent, i_mode, i_pos );
 528
 529     PL_UNLOCK_IF( !b_locked );
 530
 531     return p_item;
 532 }
 533
 534 /*****************************************************************************
 535  * Playlist item misc operations
 536  *****************************************************************************/
 537
 538 /**
 539  * Item to node
 540  *
 541  * Transform an item to a node. Return the node in the category tree, or NULL
 542  * if not found there
 543  * This function must be entered without the playlist lock
 544  * \param p_playlist the playlist object
 545  * \param p_item the item to transform
 546  * \param b_locked TRUE if the playlist is locked
 547  * \return the item transform in a node
 548  */
 549 playlist_item_t *playlist_ItemToNode( playlist_t *p_playlist,
 550                                       playlist_item_t *p_item,
 551                                       bool b_locked )
 552 {
 553
 554     playlist_item_t *p_item_in_category;
 555     /* What we do
 556      * Find the input in CATEGORY.
 557      *  - If we find it
 558      *    - change it to node
 559      *    - we'll return it at the end
 560      *    - If we are a direct child of onelevel root, change to node, else
 561      *      delete the input from ONELEVEL
 562      *  - If we don't find it, just change to node (we are probably in VLM)
 563      *    and return NULL
 564      *
 565      * If we were in ONELEVEL, we thus retrieve the node in CATEGORY (will be
 566      * useful for later BothAddInput )
 567      */
 568
 569     PL_LOCK_IF( !b_locked );
 570
 571     /* Fast track the media library, no time to loose */
 572     if( p_item == p_playlist->p_ml_category ) {
 573         PL_UNLOCK_IF( !b_locked );
 574         return p_item;
 575     }
 576
 577     /** \todo First look if we don't already have it */
 578     p_item_in_category = playlist_ItemFindFromInputAndRoot(
 579                                             p_playlist, p_item->p_input->i_id,
 580                                             p_playlist->p_root_category,
 581                                             true );
 582
 583     if( p_item_in_category )
 584     {
 585         playlist_item_t *p_item_in_one = playlist_ItemFindFromInputAndRoot(
 586                                             p_playlist, p_item->p_input->i_id,
 587                                             p_playlist->p_root_onelevel,
 588                                             true );
 589         assert( p_item_in_one );
 590
 591         /* We already have it, and there is nothing more to do */
 592         ChangeToNode( p_playlist, p_item_in_category );
 593
 594         /* Item in one is a root, change it to node */
 595         if( p_item_in_one->p_parent == p_playlist->p_root_onelevel )
 596             ChangeToNode( p_playlist, p_item_in_one );
 597         else
 598         {
 599             playlist_item_t *p_status_item = get_current_status_item( p_playlist );
 600             playlist_item_t *p_status_node = get_current_status_node( p_playlist );
 601             if( p_item_in_one == p_status_item )
 602             {
 603                 /* We're deleting the current playlist item. Update
 604                  * the playlist object to point at the previous item
 605                  * so the playlist won't be restarted */
 606                 playlist_item_t *p_prev_status_item = NULL;
 607                 int i = 0;
 608                 while( i < p_status_node->i_children &&
 609                        p_status_node->pp_children[i] != p_status_item )
 610                 {
 611                     p_prev_status_item = p_status_node->pp_children[i];
 612                     i++;
 613                 }
 614                 if( i == p_status_node->i_children )
 615                     p_prev_status_item = NULL;
 616                 if( p_prev_status_item )
 617                     set_current_status_item( p_playlist, p_prev_status_item );
 618             }
 619             DeleteFromInput( p_playlist, p_item_in_one->p_input->i_id,
 620                              p_playlist->p_root_onelevel, false );
 621         }
 622         pl_priv(p_playlist)->b_reset_currently_playing = true;
 623         vlc_cond_signal( &pl_priv(p_playlist)->signal );
 624         var_SetInteger( p_playlist, "item-change", p_item_in_category->
 625                                                         p_input->i_id );
 626         PL_UNLOCK_IF( !b_locked );
 627         return p_item_in_category;
 628     }
 629     else
 630     {
 631         ChangeToNode( p_playlist, p_item );
 632         PL_UNLOCK_IF( !b_locked );
 633         return p_item;
 634     }
 635 }
 636
 637 /**
 638  * Find an item within a root, given its input id.
 639  *
 640  * \param p_playlist the playlist object
 641  * \param i_input_id id of the input
 642  * \param p_root root playlist item
 643  * \param b_items_only TRUE if we want the item himself
 644  * \return the first found item, or NULL if not found
 645  */
 646 playlist_item_t *playlist_ItemFindFromInputAndRoot( playlist_t *p_playlist,
 647                                                     int i_input_id,
 648                                                     playlist_item_t *p_root,
 649                                                     bool b_items_only )
 650 {
 651     int i;
 652     for( i = 0 ; i< p_root->i_children ; i++ )
 653     {
 654         if( ( b_items_only ? p_root->pp_children[i]->i_children == -1 : 1 ) &&
 655             p_root->pp_children[i]->p_input->i_id == i_input_id )
 656         {
 657             return p_root->pp_children[i];
 658         }
 659         else if( p_root->pp_children[i]->i_children >= 0 )
 660         {
 661             playlist_item_t *p_search =
 662                  playlist_ItemFindFromInputAndRoot( p_playlist, i_input_id,
 663                                                     p_root->pp_children[i],
 664                                                     b_items_only );
 665             if( p_search ) return p_search;
 666         }
 667     }
 668     return NULL;
 669 }
 670
 671
 672 static int TreeMove( playlist_t *p_playlist, playlist_item_t *p_item,
 673                      playlist_item_t *p_node, int i_newpos )
 674 {
 675     int j;
 676     playlist_item_t *p_detach = p_item->p_parent;
 677     (void)p_playlist;
 678
 679     if( p_node->i_children == -1 ) return VLC_EGENERIC;
 680
 681     for( j = 0; j < p_detach->i_children; j++ )
 682     {
 683          if( p_detach->pp_children[j] == p_item ) break;
 684     }
 685     REMOVE_ELEM( p_detach->pp_children, p_detach->i_children, j );
 686
 687     /* If j < i_newpos, we are moving the element from the top to the
 688      * down of the playlist. So when removing the element we have
 689      * to change the position as we loose one element
 690      */
 691     if( j < i_newpos )
 692         i_newpos--;
 693
 694     /* Attach to new parent */
 695     INSERT_ELEM( p_node->pp_children, p_node->i_children, i_newpos, p_item );
 696     p_item->p_parent = p_node;
 697
 698     return VLC_SUCCESS;
 699 }
 700
 701 /**
 702  * Moves an item
 703  *
 704  * This function must be entered with the playlist lock
 705  *
 706  * \param p_playlist the playlist
 707  * \param p_item the item to move
 708  * \param p_node the new parent of the item
 709  * \param i_newpos the new position under this new parent
 710  * \return VLC_SUCCESS or an error
 711  */
 712 int playlist_TreeMove( playlist_t * p_playlist, playlist_item_t *p_item,
 713                        playlist_item_t *p_node, int i_newpos )
 714 {
 715     int i_ret;
 716     PL_ASSERT_LOCKED;
 717
 718     /* Drop on a top level node. Move in the two trees */
 719     if( p_node->p_parent == p_playlist->p_root_category ||
 720         p_node->p_parent == p_playlist->p_root_onelevel )
 721     {
 722         /* Fixme: avoid useless lookups but we need some clean helpers */
 723         {
 724             /* Fixme: if we try to move a node on a top-level node, it will
 725              * fail because the node doesn't exist in onelevel and we will
 726              * do some shit in onelevel. We should recursively move all items
 727              * within the node */
 728             playlist_item_t *p_node_onelevel;
 729             playlist_item_t *p_item_onelevel;
 730             p_node_onelevel = playlist_ItemFindFromInputAndRoot( p_playlist,
 731                                                 p_node->p_input->i_id,
 732                                                 p_playlist->p_root_onelevel,
 733                                                 false );
 734             p_item_onelevel = playlist_ItemFindFromInputAndRoot( p_playlist,
 735                                                 p_item->p_input->i_id,
 736                                                 p_playlist->p_root_onelevel,
 737                                                 false );
 738             if( p_node_onelevel && p_item_onelevel )
 739                 TreeMove( p_playlist, p_item_onelevel, p_node_onelevel, i_newpos );
 740         }
 741         {
 742             playlist_item_t *p_node_category;
 743             playlist_item_t *p_item_category;
 744             p_node_category = playlist_ItemFindFromInputAndRoot( p_playlist,
 745                                                 p_node->p_input->i_id,
 746                                                 p_playlist->p_root_category,
 747                                                 false );
 748             p_item_category = playlist_ItemFindFromInputAndRoot( p_playlist,
 749                                                 p_item->p_input->i_id,
 750                                                 p_playlist->p_root_category,
 751                                                 false );
 752             if( p_node_category && p_item_category )
 753                 TreeMove( p_playlist, p_item_category, p_node_category, 0 );
 754         }
 755         i_ret = VLC_SUCCESS;
 756     }
 757     else
 758         i_ret = TreeMove( p_playlist, p_item, p_node, i_newpos );
 759     pl_priv(p_playlist)->b_reset_currently_playing = true;
 760     vlc_cond_signal( &pl_priv(p_playlist)->signal );
 761     return i_ret;
 762 }
 763
 764 /**
 765  * Send a notification that an item has been added to a node
 766  *
 767  * \param p_playlist the playlist object
 768  * \param i_item_id id of the item added
 769  * \param i_node_id id of the node in wich the item was added
 770  * \param b_signal TRUE if the function must send a signal
 771  * \return nothing
 772  */
 773 void playlist_SendAddNotify( playlist_t *p_playlist, int i_item_id,
 774                              int i_node_id, bool b_signal )
 775 {
 776     vlc_value_t val;
 777     PL_ASSERT_LOCKED;
 778
 779     playlist_add_t *p_add = (playlist_add_t *)malloc( sizeof( playlist_add_t) );
 780     if( !p_add )
 781         return;
 782
 783     p_add->i_item = i_item_id;
 784     p_add->i_node = i_node_id;
 785     val.p_address = p_add;
 786     pl_priv(p_playlist)->b_reset_currently_playing = true;
 787     if( b_signal )
 788         vlc_cond_signal( &pl_priv(p_playlist)->signal );
 789
 790     var_Set( p_playlist, "item-append", val );
 791     free( p_add );
 792 }
 793
 794 /***************************************************************************
 795  * The following functions are local
 796  ***************************************************************************/
 797
 798 /* Enqueue an item for preparsing, and play it, if needed */
 799 static void GoAndPreparse( playlist_t *p_playlist, int i_mode,
 800                            playlist_item_t *p_item_cat,
 801                            playlist_item_t *p_item_one )
 802 {
 803     PL_ASSERT_LOCKED;
 804     if( (i_mode & PLAYLIST_GO ) )
 805     {
 806         playlist_item_t *p_parent = p_item_one;
 807         playlist_item_t *p_toplay = NULL;
 808         while( p_parent )
 809         {
 810             if( p_parent == p_playlist->p_root_category )
 811             {
 812                 p_toplay = p_item_cat; break;
 813             }
 814             else if( p_parent == p_playlist->p_root_onelevel )
 815             {
 816                 p_toplay = p_item_one; break;
 817             }
 818             p_parent = p_parent->p_parent;
 819         }
 820         assert( p_toplay );
 821         pl_priv(p_playlist)->request.b_request = true;
 822         pl_priv(p_playlist)->request.i_skip = 0;
 823         pl_priv(p_playlist)->request.p_item = p_toplay;
 824         if( pl_priv(p_playlist)->p_input )
 825             input_StopThread( pl_priv(p_playlist)->p_input );
 826         pl_priv(p_playlist)->request.i_status = PLAYLIST_RUNNING;
 827         vlc_cond_signal( &pl_priv(p_playlist)->signal );
 828     }
 829     /* Preparse if PREPARSE or SPREPARSE & not enough meta */
 830     char *psz_artist = input_item_GetArtist( p_item_cat->p_input );
 831     char *psz_album = input_item_GetAlbum( p_item_cat->p_input );
 832     if( pl_priv(p_playlist)->b_auto_preparse &&
 833           (i_mode & PLAYLIST_PREPARSE ||
 834           ( i_mode & PLAYLIST_SPREPARSE &&
 835             ( EMPTY_STR( psz_artist ) || ( EMPTY_STR( psz_album ) ) )
 836           ) ) )
 837         playlist_PreparseEnqueue( p_playlist, p_item_cat->p_input, pl_Locked );
 838     /* If we already have it, signal it */
 839     else if( !EMPTY_STR( psz_artist ) && !EMPTY_STR( psz_album ) )
 840         input_item_SetPreparsed( p_item_cat->p_input, true );
 841     free( psz_artist );
 842     free( psz_album );
 843 }
 844
 845 /* Add the playlist item to the requested node and fire a notification */
 846 static void AddItem( playlist_t *p_playlist, playlist_item_t *p_item,
 847                      playlist_item_t *p_node, int i_mode, int i_pos )
 848 {
 849     PL_ASSERT_LOCKED;
 850     ARRAY_APPEND(p_playlist->items, p_item);
 851     ARRAY_APPEND(p_playlist->all_items, p_item);
 852
 853     if( i_pos == PLAYLIST_END )
 854         playlist_NodeAppend( p_playlist, p_item, p_node );
 855     else
 856         playlist_NodeInsert( p_playlist, p_item, p_node, i_pos );
 857
 858     if( !pl_priv(p_playlist)->b_doing_ml )
 859         playlist_SendAddNotify( p_playlist, p_item->i_id, p_node->i_id,
 860                                  !( i_mode & PLAYLIST_NO_REBUILD ) );
 861 }
 862
 863 /* Actually convert an item to a node */
 864 static void ChangeToNode( playlist_t *p_playlist, playlist_item_t *p_item )
 865 {
 866     int i;
 867     if( p_item->i_children == -1 )
 868         p_item->i_children = 0;
 869
 870     /* Remove it from the array of available items */
 871     ARRAY_BSEARCH( p_playlist->items,->i_id, int, p_item->i_id, i );
 872     if( i != -1 )
 873         ARRAY_REMOVE( p_playlist->items, i );
 874 }
 875
 876 /* Do the actual removal */
 877 static int DeleteInner( playlist_t * p_playlist, playlist_item_t *p_item,
 878                         bool b_stop )
 879 {
 880     int i;
 881     int i_id = p_item->i_id;
 882     PL_ASSERT_LOCKED;
 883
 884     if( p_item->i_children > -1 )
 885     {
 886         return playlist_NodeDelete( p_playlist, p_item, true, false );
 887     }
 888     pl_priv(p_playlist)->b_reset_currently_playing = true;
 889     var_SetInteger( p_playlist, "item-deleted", i_id );
 890
 891     /* Remove the item from the bank */
 892     ARRAY_BSEARCH( p_playlist->all_items,->i_id, int, i_id, i );
 893     if( i != -1 )
 894         ARRAY_REMOVE( p_playlist->all_items, i );
 895
 896     ARRAY_BSEARCH( p_playlist->items,->i_id, int, i_id, i );
 897     if( i != -1 )
 898         ARRAY_REMOVE( p_playlist->items, i );
 899
 900     /* Check if it is the current item */
 901     if( get_current_status_item( p_playlist ) == p_item )
 902     {
 903         /* Hack we don't call playlist_Control for lock reasons */
 904         if( b_stop )
 905         {
 906             pl_priv(p_playlist)->request.i_status = PLAYLIST_STOPPED;
 907             pl_priv(p_playlist)->request.b_request = true;
 908             pl_priv(p_playlist)->request.p_item = NULL;
 909             msg_Info( p_playlist, "stopping playback" );
 910             vlc_cond_signal( &pl_priv(p_playlist)->signal );
 911         }
 912     }
 913
 914     PL_DEBUG( "deleting item `%s'", p_item->p_input->psz_name );
 915
 916     /* Remove the item from its parent */
 917     playlist_NodeRemoveItem( p_playlist, p_item, p_item->p_parent );
 918
 919     playlist_ItemRelease( p_item );
 920
 921     return VLC_SUCCESS;
 922 }