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 static playlist_item_t *ItemToNode( playlist_t *, playlist_item_t *, bool );
  42
  43 /*****************************************************************************
  44  * An input item has gained a subitem (Event Callback)
  45  *****************************************************************************/
  46 static void input_item_subitem_added( const vlc_event_t * p_event,
  47                                       void * user_data )
  48 {
  49     playlist_item_t *p_parent_playlist_item = user_data;
  50     playlist_t * p_playlist = p_parent_playlist_item->p_playlist;
  51     input_item_t * p_parent, * p_child;
  52     playlist_item_t * p_child_in_category;
  53     playlist_item_t * p_item_in_category;
  54     bool b_play;
  55
  56     p_parent = p_event->p_obj;
  57     p_child = p_event->u.input_item_subitem_added.p_new_child;
  58
  59     PL_LOCK;
  60     b_play = var_CreateGetBool( p_playlist, "playlist-autostart" );
  61
  62     /* This part is really hakish, but this playlist system isn't simple */
  63     /* First check if we haven't already added the item as we are
  64      * listening using the onelevel and the category representent
  65      * (Because of the playlist design) */
  66     p_child_in_category = playlist_ItemFindFromInputAndRoot(
  67                             p_playlist, p_child,
  68                             p_playlist->p_root_category,
  69                             false /* Only non-node */ );
  70
  71     if( !p_child_in_category )
  72     {
  73         /* Then, transform to a node if needed */
  74         p_item_in_category = playlist_ItemFindFromInputAndRoot(
  75                                 p_playlist, p_parent,
  76                                 p_playlist->p_root_category,
  77                                 false /* Only non-node */ );
  78         if( !p_item_in_category )
  79         {
  80             /* Item may have been removed */
  81             PL_UNLOCK;
  82             return;
  83         }
  84
  85         b_play = b_play &&
  86             p_item_in_category == get_current_status_item( p_playlist );
  87
  88         /* If this item is already a node don't transform it */
  89         if( p_item_in_category->i_children == -1 )
  90         {
  91             p_item_in_category = ItemToNode( p_playlist,
  92                     p_item_in_category, pl_Locked );
  93             p_item_in_category->p_input->i_type = ITEM_TYPE_PLAYLIST;
  94         }
  95
  96         int i_ret = playlist_BothAddInput( p_playlist, p_child,
  97                 p_item_in_category,
  98                 PLAYLIST_APPEND | PLAYLIST_SPREPARSE , PLAYLIST_END,
  99                 NULL, NULL, pl_Locked );
 100
 101         if( i_ret == VLC_SUCCESS && b_play )
 102         {
 103             playlist_Control( p_playlist, PLAYLIST_VIEWPLAY,
 104                           pl_Locked, p_item_in_category, NULL );
 105         }
 106     }
 107
 108     PL_UNLOCK;
 109
 110 }
 111
 112 /*****************************************************************************
 113  * An input item's meta or duration has changed (Event Callback)
 114  *****************************************************************************/
 115 static void input_item_changed( const vlc_event_t * p_event,
 116                                 void * user_data )
 117 {
 118     playlist_item_t *p_item = user_data;
 119     VLC_UNUSED( p_event );
 120     var_SetAddress( p_item->p_playlist, "item-change", p_item->p_input );
 121 }
 122
 123 /*****************************************************************************
 124  * Listen to vlc_InputItemAddSubItem event
 125  *****************************************************************************/
 126 static void install_input_item_observer( playlist_item_t * p_item )
 127 {
 128     vlc_event_manager_t * p_em = &p_item->p_input->event_manager;
 129     vlc_event_attach( p_em, vlc_InputItemSubItemAdded,
 130                       input_item_subitem_added, p_item );
 131     vlc_event_attach( p_em, vlc_InputItemDurationChanged,
 132                       input_item_changed, p_item );
 133     vlc_event_attach( p_em, vlc_InputItemMetaChanged,
 134                       input_item_changed, p_item );
 135     vlc_event_attach( p_em, vlc_InputItemNameChanged,
 136                       input_item_changed, p_item );
 137     vlc_event_attach( p_em, vlc_InputItemInfoChanged,
 138                       input_item_changed, p_item );
 139     vlc_event_attach( p_em, vlc_InputItemErrorWhenReadingChanged,
 140                       input_item_changed, p_item );
 141 }
 142
 143 static void uninstall_input_item_observer( playlist_item_t * p_item )
 144 {
 145     vlc_event_manager_t * p_em = &p_item->p_input->event_manager;
 146     vlc_event_detach( p_em, vlc_InputItemSubItemAdded,
 147                       input_item_subitem_added, p_item );
 148     vlc_event_detach( p_em, vlc_InputItemMetaChanged,
 149                       input_item_changed, p_item );
 150     vlc_event_detach( p_em, vlc_InputItemDurationChanged,
 151                       input_item_changed, p_item );
 152     vlc_event_detach( p_em, vlc_InputItemNameChanged,
 153                       input_item_changed, p_item );
 154     vlc_event_detach( p_em, vlc_InputItemInfoChanged,
 155                       input_item_changed, p_item );
 156     vlc_event_detach( p_em, vlc_InputItemErrorWhenReadingChanged,
 157                       input_item_changed, p_item );
 158 }
 159
 160 /*****************************************************************************
 161  * Playlist item creation
 162  *****************************************************************************/
 163 playlist_item_t *playlist_ItemNewFromInput( playlist_t *p_playlist,
 164                                               input_item_t *p_input )
 165 {
 166     playlist_item_t* p_item = malloc( sizeof( playlist_item_t ) );
 167     if( !p_item )
 168         return NULL;
 169
 170     assert( p_input );
 171
 172     p_item->p_input = p_input;
 173     vlc_gc_incref( p_item->p_input );
 174
 175     p_item->i_id = ++pl_priv(p_playlist)->i_last_playlist_id;
 176
 177     p_item->p_parent = NULL;
 178     p_item->i_children = -1;
 179     p_item->pp_children = NULL;
 180     p_item->i_flags = 0;
 181     p_item->p_playlist = p_playlist;
 182
 183     install_input_item_observer( p_item );
 184
 185     return p_item;
 186 }
 187
 188 /***************************************************************************
 189  * Playlist item destruction
 190  ***************************************************************************/
 191
 192 /**
 193  * Release an item
 194  *
 195  * \param p_item item to delete
 196  * \return VLC_SUCCESS
 197 */
 198 int playlist_ItemRelease( playlist_item_t *p_item )
 199 {
 200     /* For the assert */
 201     playlist_t *p_playlist = p_item->p_playlist;
 202     PL_ASSERT_LOCKED;
 203
 204     /* Surprise, we can't actually do more because we
 205      * don't do refcounting, or eauivalent.
 206      * Because item are not only accessed by their id
 207      * using playlist_item outside the PL_LOCK isn't safe.
 208      * Most of the modules does that.
 209      *
 210      * Who wants to add proper memory management? */
 211     uninstall_input_item_observer( p_item );
 212     ARRAY_APPEND( pl_priv(p_playlist)->items_to_delete, p_item);
 213     return VLC_SUCCESS;
 214 }
 215
 216 /**
 217  * Delete input item
 218  *
 219  * Remove an input item when it appears from a root playlist item
 220  * \param p_playlist playlist object
 221  * \param p_input the input to delete
 222  * \param p_root root playlist item
 223  * \param b_do_stop must stop or not the playlist
 224  * \return VLC_SUCCESS or VLC_EGENERIC
 225 */
 226 static int DeleteFromInput( playlist_t *p_playlist, input_item_t *p_input,
 227                             playlist_item_t *p_root, bool b_do_stop )
 228 {
 229     int i;
 230     PL_ASSERT_LOCKED;
 231     for( i = 0 ; i< p_root->i_children ; i++ )
 232     {
 233         if( p_root->pp_children[i]->i_children == -1 &&
 234             p_root->pp_children[i]->p_input == p_input )
 235         {
 236             DeleteInner( p_playlist, p_root->pp_children[i], b_do_stop );
 237             return VLC_SUCCESS;
 238         }
 239         else if( p_root->pp_children[i]->i_children >= 0 )
 240         {
 241             int i_ret = DeleteFromInput( p_playlist, p_input,
 242                                          p_root->pp_children[i], b_do_stop );
 243             if( i_ret == VLC_SUCCESS ) return VLC_SUCCESS;
 244         }
 245     }
 246     return VLC_EGENERIC;
 247 }
 248
 249 /**
 250  * Delete input item
 251  *
 252  * Remove an input item when it appears from a root playlist item
 253  * \param p_playlist playlist object
 254  * \param p_input the input to delete
 255  * \param p_root root playlist item
 256  * \param b_locked TRUE if the playlist is locked
 257  * \return VLC_SUCCESS or VLC_EGENERIC
 258  */
 259 int playlist_DeleteFromInputInParent( playlist_t *p_playlist,
 260                                       input_item_t *p_item,
 261                                       playlist_item_t *p_root, bool b_locked )
 262 {
 263     int i_ret;
 264     PL_LOCK_IF( !b_locked );
 265     i_ret = DeleteFromInput( p_playlist, p_item, p_root, true );
 266     PL_UNLOCK_IF( !b_locked );
 267     return i_ret;
 268 }
 269
 270 /**
 271  * Delete from input
 272  *
 273  * Remove an input item from ONELEVEL and CATEGORY
 274  * \param p_playlist playlist object
 275  * \param p_input the input to delete
 276  * \param b_locked TRUE if the playlist is locked
 277  * \return VLC_SUCCESS or VLC_ENOITEM
 278  */
 279 int playlist_DeleteFromInput( playlist_t *p_playlist, input_item_t *p_input,
 280                               bool b_locked )
 281 {
 282     int i_ret1, i_ret2;
 283     PL_LOCK_IF( !b_locked );
 284     i_ret1 = DeleteFromInput( p_playlist, p_input,
 285                              p_playlist->p_root_category, true );
 286     i_ret2 = DeleteFromInput( p_playlist, p_input,
 287                      p_playlist->p_root_onelevel, true );
 288     PL_UNLOCK_IF( !b_locked );
 289     return ( i_ret1 == VLC_SUCCESS || i_ret2 == VLC_SUCCESS ) ?
 290                             VLC_SUCCESS : VLC_ENOITEM;
 291 }
 292
 293 /**
 294  * Clear the playlist
 295  *
 296  * \param p_playlist playlist object
 297  * \param b_locked TRUE if the playlist is locked
 298  * \return nothing
 299  */
 300 void playlist_Clear( playlist_t * p_playlist, bool b_locked )
 301 {
 302     PL_LOCK_IF( !b_locked );
 303     playlist_NodeEmpty( p_playlist, p_playlist->p_local_category, true );
 304     playlist_NodeEmpty( p_playlist, p_playlist->p_local_onelevel, true );
 305     PL_UNLOCK_IF( !b_locked );
 306 }
 307
 308 /**
 309  * Delete playlist item
 310  *
 311  * Remove a playlist item from the playlist, given its id
 312  * This function is to be used only by the playlist
 313  * \param p_playlist playlist object
 314  * \param i_id id of the item do delete
 315  * \return VLC_SUCCESS or an error
 316  */
 317 int playlist_DeleteFromItemId( playlist_t *p_playlist, int i_id )
 318 {
 319     PL_ASSERT_LOCKED;
 320     playlist_item_t *p_item = playlist_ItemGetById( p_playlist, i_id );
 321     if( !p_item ) return VLC_EGENERIC;
 322     return DeleteInner( p_playlist, p_item, true );
 323 }
 324
 325 /***************************************************************************
 326  * Playlist item addition
 327  ***************************************************************************/
 328 /**
 329  * Playlist add
 330  *
 331  * Add an item to the playlist or the media library
 332  * \param p_playlist the playlist to add into
 333  * \param psz_uri the mrl to add to the playlist
 334  * \param psz_name a text giving a name or description of this item
 335  * \param i_mode the mode used when adding
 336  * \param i_pos the position in the playlist where to add. If this is
 337  *        PLAYLIST_END the item will be added at the end of the playlist
 338  *        regardless of its size
 339  * \param b_playlist TRUE for playlist, FALSE for media library
 340  * \param b_locked TRUE if the playlist is locked
 341  * \return VLC_SUCCESS or a VLC error code
 342  */
 343 int playlist_Add( playlist_t *p_playlist, const char *psz_uri,
 344                   const char *psz_name, int i_mode, int i_pos,
 345                   bool b_playlist, bool b_locked )
 346 {
 347     return playlist_AddExt( p_playlist, psz_uri, psz_name,
 348                             i_mode, i_pos, -1, 0, NULL, 0, b_playlist, b_locked );
 349 }
 350
 351 /**
 352  * Add a MRL into the playlist or the media library, duration and options given
 353  *
 354  * \param p_playlist the playlist to add into
 355  * \param psz_uri the mrl to add to the playlist
 356  * \param psz_name a text giving a name or description of this item
 357  * \param i_mode the mode used when adding
 358  * \param i_pos the position in the playlist where to add. If this is
 359  *        PLAYLIST_END the item will be added at the end of the playlist
 360  *        regardless of its size
 361  * \param i_duration length of the item in milliseconds.
 362  * \param i_options the number of options
 363  * \param ppsz_options an array of options
 364  * \param i_option_flags options flags
 365  * \param b_playlist TRUE for playlist, FALSE for media library
 366  * \param b_locked TRUE if the playlist is locked
 367  * \return VLC_SUCCESS or a VLC error code
 368 */
 369 int playlist_AddExt( playlist_t *p_playlist, const char * psz_uri,
 370                      const char *psz_name, int i_mode, int i_pos,
 371                      mtime_t i_duration,
 372                      int i_options, const char *const *ppsz_options,
 373                      unsigned i_option_flags,
 374                      bool b_playlist, bool b_locked )
 375 {
 376     int i_ret;
 377     input_item_t *p_input;
 378
 379     p_input = input_item_NewExt( p_playlist, psz_uri, psz_name,
 380                                  i_options, ppsz_options, i_option_flags,
 381                                  i_duration );
 382     if( p_input == NULL )
 383         return VLC_ENOMEM;
 384     i_ret = playlist_AddInput( p_playlist, p_input, i_mode, i_pos, b_playlist,
 385                                b_locked );
 386     vlc_gc_decref( p_input );
 387     return i_ret;
 388 }
 389
 390 /**
 391  * Add an input item to the playlist node
 392  *
 393  * \param p_playlist the playlist to add into
 394  * \param p_input the input item to add
 395  * \param i_mode the mode used when adding
 396  * \param i_pos the position in the playlist where to add. If this is
 397  *        PLAYLIST_END the item will be added at the end of the playlist
 398  *        regardless of its size
 399  * \param b_playlist TRUE for playlist, FALSE for media library
 400  * \param b_locked TRUE if the playlist is locked
 401  * \return VLC_SUCCESS or VLC_ENOMEM or VLC_EGENERIC
 402 */
 403 int playlist_AddInput( playlist_t* p_playlist, input_item_t *p_input,
 404                        int i_mode, int i_pos, bool b_playlist,
 405                        bool b_locked )
 406 {
 407     playlist_item_t *p_item_cat, *p_item_one;
 408     if( p_playlist->b_die ) return VLC_EGENERIC;
 409     if( !pl_priv(p_playlist)->b_doing_ml )
 410         PL_DEBUG( "adding item `%s' ( %s )", p_input->psz_name,
 411                                              p_input->psz_uri );
 412
 413     PL_LOCK_IF( !b_locked );
 414
 415     /* Add to ONELEVEL */
 416     p_item_one = playlist_ItemNewFromInput( p_playlist, p_input );
 417     if( p_item_one == NULL ) return VLC_ENOMEM;
 418     AddItem( p_playlist, p_item_one,
 419              b_playlist ? p_playlist->p_local_onelevel :
 420                           p_playlist->p_ml_onelevel , i_mode, i_pos );
 421
 422     /* Add to CATEGORY */
 423     p_item_cat = playlist_ItemNewFromInput( p_playlist, p_input );
 424     if( p_item_cat == NULL ) return VLC_ENOMEM;
 425     AddItem( p_playlist, p_item_cat,
 426              b_playlist ? p_playlist->p_local_category :
 427                           p_playlist->p_ml_category , i_mode, i_pos );
 428
 429     GoAndPreparse( p_playlist, i_mode, p_item_cat, p_item_one );
 430
 431     PL_UNLOCK_IF( !b_locked );
 432     return VLC_SUCCESS;
 433 }
 434
 435 /**
 436  * Add input
 437  *
 438  * Add an input item to p_direct_parent in the category tree, and to the
 439  * matching top category in onelevel
 440  * \param p_playlist the playlist to add into
 441  * \param p_input the input item to add
 442  * \param p_direct_parent the parent item to add into
 443  * \param i_mode the mode used when adding
 444  * \param i_pos the position in the playlist where to add. If this is
 445  *        PLAYLIST_END the item will be added at the end of the playlist
 446  *        regardless of its size
 447  * \param i_cat id of the items category
 448  * \param i_one id of the item onelevel category
 449  * \param b_locked TRUE if the playlist is locked
 450  * \return VLC_SUCCESS if success, VLC_EGENERIC if fail, VLC_ENOMEM if OOM
 451  */
 452 int playlist_BothAddInput( playlist_t *p_playlist,
 453                            input_item_t *p_input,
 454                            playlist_item_t *p_direct_parent,
 455                            int i_mode, int i_pos,
 456                            int *i_cat, int *i_one, bool b_locked )
 457 {
 458     playlist_item_t *p_item_cat, *p_item_one, *p_up;
 459     int i_top;
 460     assert( p_input );
 461
 462     if( !vlc_object_alive( p_playlist ) )
 463         return VLC_EGENERIC;
 464
 465     PL_LOCK_IF( !b_locked );
 466
 467     /* Add to category */
 468     p_item_cat = playlist_ItemNewFromInput( p_playlist, p_input );
 469     if( p_item_cat == NULL ) return VLC_ENOMEM;
 470     AddItem( p_playlist, p_item_cat, p_direct_parent, i_mode, i_pos );
 471
 472     /* Add to onelevel */
 473     /** \todo make a faster case for ml import */
 474     p_item_one = playlist_ItemNewFromInput( p_playlist, p_input );
 475     if( p_item_one == NULL ) return VLC_ENOMEM;
 476
 477     p_up = p_direct_parent;
 478     while( p_up->p_parent != p_playlist->p_root_category )
 479     {
 480         p_up = p_up->p_parent;
 481     }
 482     for( i_top = 0 ; i_top < p_playlist->p_root_onelevel->i_children; i_top++ )
 483     {
 484         if( p_playlist->p_root_onelevel->pp_children[i_top]->p_input ==
 485                              p_up->p_input )
 486         {
 487             AddItem( p_playlist, p_item_one,
 488                      p_playlist->p_root_onelevel->pp_children[i_top],
 489                      i_mode, i_pos );
 490             break;
 491         }
 492     }
 493     GoAndPreparse( p_playlist, i_mode, p_item_cat, p_item_one );
 494
 495     if( i_cat ) *i_cat = p_item_cat->i_id;
 496     if( i_one ) *i_one = p_item_one->i_id;
 497
 498     PL_UNLOCK_IF( !b_locked );
 499     return VLC_SUCCESS;
 500 }
 501
 502 /**
 503  * Add an input item to a given node
 504  *
 505  * \param p_playlist the playlist to add into
 506  * \param p_input the input item to add
 507  * \param p_parent the parent item to add into
 508  * \param i_mode the mode used when addin
 509  * \param i_pos the position in the playlist where to add. If this is
 510  *        PLAYLIST_END the item will be added at the end of the playlist
 511  *        regardless of its size
 512  * \param b_locked TRUE if the playlist is locked
 513  * \return the new playlist item
 514  */
 515 playlist_item_t * playlist_NodeAddInput( playlist_t *p_playlist,
 516                                          input_item_t *p_input,
 517                                          playlist_item_t *p_parent,
 518                                          int i_mode, int i_pos,
 519                                          bool b_locked )
 520 {
 521     playlist_item_t *p_item;
 522     assert( p_input );
 523     assert( p_parent && p_parent->i_children != -1 );
 524
 525     if( p_playlist->b_die )
 526         return NULL;
 527     PL_LOCK_IF( !b_locked );
 528
 529     p_item = playlist_ItemNewFromInput( p_playlist, p_input );
 530     if( p_item == NULL ) return NULL;
 531     AddItem( p_playlist, p_item, p_parent, i_mode, i_pos );
 532
 533     PL_UNLOCK_IF( !b_locked );
 534
 535     return p_item;
 536 }
 537
 538 /*****************************************************************************
 539  * Playlist item misc operations
 540  *****************************************************************************/
 541
 542 /**
 543  * Item to node
 544  *
 545  * Transform an item to a node. Return the node in the category tree, or NULL
 546  * if not found there
 547  * This function must be entered without the playlist lock
 548  * \param p_playlist the playlist object
 549  * \param p_item the item to transform
 550  * \param b_locked TRUE if the playlist is locked
 551  * \return the item transform in a node
 552  */
 553 static playlist_item_t *ItemToNode( playlist_t *p_playlist,
 554                                     playlist_item_t *p_item,
 555                                     bool b_locked )
 556 {
 557
 558     playlist_item_t *p_item_in_category;
 559     /* What we do
 560      * Find the input in CATEGORY.
 561      *  - If we find it
 562      *    - change it to node
 563      *    - we'll return it at the end
 564      *    - If we are a direct child of onelevel root, change to node, else
 565      *      delete the input from ONELEVEL
 566      *  - If we don't find it, just change to node (we are probably in VLM)
 567      *    and return NULL
 568      *
 569      * If we were in ONELEVEL, we thus retrieve the node in CATEGORY (will be
 570      * useful for later BothAddInput )
 571      */
 572
 573     PL_LOCK_IF( !b_locked );
 574
 575     /* Fast track the media library, no time to loose */
 576     if( p_item == p_playlist->p_ml_category ) {
 577         PL_UNLOCK_IF( !b_locked );
 578         return p_item;
 579     }
 580
 581     /** \todo First look if we don't already have it */
 582     p_item_in_category = playlist_ItemFindFromInputAndRoot(
 583                                             p_playlist, p_item->p_input,
 584                                             p_playlist->p_root_category,
 585                                             true );
 586
 587     if( p_item_in_category )
 588     {
 589         playlist_item_t *p_item_in_one = playlist_ItemFindFromInputAndRoot(
 590                                             p_playlist, p_item->p_input,
 591                                             p_playlist->p_root_onelevel,
 592                                             true );
 593         assert( p_item_in_one );
 594
 595         /* We already have it, and there is nothing more to do */
 596         ChangeToNode( p_playlist, p_item_in_category );
 597
 598         /* Item in one is a root, change it to node */
 599         if( p_item_in_one->p_parent == p_playlist->p_root_onelevel )
 600             ChangeToNode( p_playlist, p_item_in_one );
 601         else
 602         {
 603             playlist_item_t *p_status_item = get_current_status_item( p_playlist );
 604             playlist_item_t *p_status_node = get_current_status_node( p_playlist );
 605             if( p_item_in_one == p_status_item )
 606             {
 607                 /* We're deleting the current playlist item. Update
 608                  * the playlist object to point at the previous item
 609                  * so the playlist won't be restarted */
 610                 playlist_item_t *p_prev_status_item = NULL;
 611                 int i = 0;
 612                 while( i < p_status_node->i_children &&
 613                        p_status_node->pp_children[i] != p_status_item )
 614                 {
 615                     p_prev_status_item = p_status_node->pp_children[i];
 616                     i++;
 617                 }
 618                 if( i == p_status_node->i_children )
 619                     p_prev_status_item = NULL;
 620                 if( p_prev_status_item )
 621                     set_current_status_item( p_playlist, p_prev_status_item );
 622             }
 623             DeleteFromInput( p_playlist, p_item_in_one->p_input,
 624                              p_playlist->p_root_onelevel, false );
 625         }
 626         pl_priv(p_playlist)->b_reset_currently_playing = true;
 627         vlc_cond_signal( &pl_priv(p_playlist)->signal );
 628         var_SetAddress( p_playlist, "item-change", p_item_in_category->p_input );
 629         var_SetAddress( p_playlist, "leaf-to-parent", p_item_in_category->p_input );
 630         PL_UNLOCK_IF( !b_locked );
 631         return p_item_in_category;
 632     }
 633     else
 634     {
 635         ChangeToNode( p_playlist, p_item );
 636         PL_UNLOCK_IF( !b_locked );
 637         return p_item;
 638     }
 639 }
 640
 641 /**
 642  * Find an item within a root, given its input id.
 643  *
 644  * \param p_playlist the playlist object
 645  * \param p_item the input item
 646  * \param p_root root playlist item
 647  * \param b_items_only TRUE if we want the item himself
 648  * \return the first found item, or NULL if not found
 649  */
 650 playlist_item_t *playlist_ItemFindFromInputAndRoot( playlist_t *p_playlist,
 651                                                     input_item_t *p_item,
 652                                                     playlist_item_t *p_root,
 653                                                     bool b_items_only )
 654 {
 655     int i;
 656     for( i = 0 ; i< p_root->i_children ; i++ )
 657     {
 658         if( ( b_items_only ? p_root->pp_children[i]->i_children == -1 : 1 ) &&
 659             p_root->pp_children[i]->p_input == p_item )
 660         {
 661             return p_root->pp_children[i];
 662         }
 663         else if( p_root->pp_children[i]->i_children >= 0 )
 664         {
 665             playlist_item_t *p_search =
 666                  playlist_ItemFindFromInputAndRoot( p_playlist, p_item,
 667                                                     p_root->pp_children[i],
 668                                                     b_items_only );
 669             if( p_search ) return p_search;
 670         }
 671     }
 672     return NULL;
 673 }
 674
 675
 676 static int ItemIndex ( playlist_item_t *p_item )
 677 {
 678     for( int i = 0; i < p_item->p_parent->i_children; i++ )
 679         if( p_item->p_parent->pp_children[i] == p_item ) return i;
 680     return -1;
 681 }
 682
 683 /**
 684  * Moves an item
 685  *
 686  * This function must be entered with the playlist lock
 687  *
 688  * \param p_playlist the playlist
 689  * \param p_item the item to move
 690  * \param p_node the new parent of the item
 691  * \param i_newpos the new position under this new parent
 692  * \return VLC_SUCCESS or an error
 693  */
 694 int playlist_TreeMove( playlist_t * p_playlist, playlist_item_t *p_item,
 695                        playlist_item_t *p_node, int i_newpos )
 696 {
 697     PL_ASSERT_LOCKED;
 698
 699     if( p_node->i_children == -1 ) return VLC_EGENERIC;
 700
 701     playlist_item_t *p_detach = p_item->p_parent;
 702     int i_index = ItemIndex( p_item );
 703
 704     REMOVE_ELEM( p_detach->pp_children, p_detach->i_children, i_index );
 705
 706     if( p_detach == p_node && i_index < i_newpos )
 707         i_newpos--;
 708
 709     INSERT_ELEM( p_node->pp_children, p_node->i_children, i_newpos, p_item );
 710     p_item->p_parent = p_node;
 711
 712     pl_priv( p_playlist )->b_reset_currently_playing = true;
 713     vlc_cond_signal( &pl_priv( p_playlist )->signal );
 714     return VLC_SUCCESS;
 715 }
 716
 717 /**
 718  * Moves an array of items
 719  *
 720  * This function must be entered with the playlist lock
 721  *
 722  * \param p_playlist the playlist
 723  * \param i_items the number of indexes to move
 724  * \param pp_items the array of indexes to move
 725  * \param p_node the target node
 726  * \param i_newpos the target position under this node
 727  * \return VLC_SUCCESS or an error
 728  */
 729 int playlist_TreeMoveMany( playlist_t *p_playlist,
 730                             int i_items, playlist_item_t **pp_items,
 731                             playlist_item_t *p_node, int i_newpos )
 732 {
 733     PL_ASSERT_LOCKED;
 734
 735     if ( p_node->i_children == -1 ) return VLC_EGENERIC;
 736
 737     int i;
 738     for( i = 0; i < i_items; i++ )
 739     {
 740         playlist_item_t *p_item = pp_items[i];
 741         int i_index = ItemIndex( p_item );
 742         playlist_item_t *p_parent = p_item->p_parent;
 743         REMOVE_ELEM( p_parent->pp_children, p_parent->i_children, i_index );
 744         if ( p_parent == p_node && i_index < i_newpos ) i_newpos--;
 745     }
 746     for( i = i_items - 1; i >= 0; i-- )
 747     {
 748         playlist_item_t *p_item = pp_items[i];
 749         INSERT_ELEM( p_node->pp_children, p_node->i_children, i_newpos, p_item );
 750         p_item->p_parent = p_node;
 751     }
 752
 753     pl_priv( p_playlist )->b_reset_currently_playing = true;
 754     vlc_cond_signal( &pl_priv( p_playlist )->signal );
 755     return VLC_SUCCESS;
 756 }
 757
 758 /**
 759  * Send a notification that an item has been added to a node
 760  *
 761  * \param p_playlist the playlist object
 762  * \param i_item_id id of the item added
 763  * \param i_node_id id of the node in wich the item was added
 764  * \param b_signal TRUE if the function must send a signal
 765  * \return nothing
 766  */
 767 void playlist_SendAddNotify( playlist_t *p_playlist, int i_item_id,
 768                              int i_node_id, bool b_signal )
 769 {
 770     playlist_private_t *p_sys = pl_priv(p_playlist);
 771     PL_ASSERT_LOCKED;
 772
 773     p_sys->b_reset_currently_playing = true;
 774     if( b_signal )
 775         vlc_cond_signal( &p_sys->signal );
 776
 777     playlist_add_t add;
 778     add.i_item = i_item_id;
 779     add.i_node = i_node_id;
 780
 781     vlc_value_t val;
 782     val.p_address = &add;
 783
 784     var_Set( p_playlist, "playlist-item-append", val );
 785 }
 786
 787 /***************************************************************************
 788  * The following functions are local
 789  ***************************************************************************/
 790
 791 /* Enqueue an item for preparsing, and play it, if needed */
 792 static void GoAndPreparse( playlist_t *p_playlist, int i_mode,
 793                            playlist_item_t *p_item_cat,
 794                            playlist_item_t *p_item_one )
 795 {
 796     PL_ASSERT_LOCKED;
 797     if( (i_mode & PLAYLIST_GO ) )
 798     {
 799         playlist_item_t *p_parent = p_item_one;
 800         playlist_item_t *p_toplay = NULL;
 801         while( p_parent )
 802         {
 803             if( p_parent == p_playlist->p_root_category )
 804             {
 805                 p_toplay = p_item_cat; break;
 806             }
 807             else if( p_parent == p_playlist->p_root_onelevel )
 808             {
 809                 p_toplay = p_item_one; break;
 810             }
 811             p_parent = p_parent->p_parent;
 812         }
 813         assert( p_toplay );
 814         pl_priv(p_playlist)->request.b_request = true;
 815         pl_priv(p_playlist)->request.i_skip = 0;
 816         pl_priv(p_playlist)->request.p_item = p_toplay;
 817         if( pl_priv(p_playlist)->p_input )
 818             input_Stop( pl_priv(p_playlist)->p_input, true );
 819         pl_priv(p_playlist)->request.i_status = PLAYLIST_RUNNING;
 820         vlc_cond_signal( &pl_priv(p_playlist)->signal );
 821     }
 822     /* Preparse if PREPARSE or SPREPARSE & not enough meta */
 823     char *psz_artist = input_item_GetArtist( p_item_cat->p_input );
 824     char *psz_album = input_item_GetAlbum( p_item_cat->p_input );
 825     if( pl_priv(p_playlist)->b_auto_preparse &&
 826           (i_mode & PLAYLIST_PREPARSE ||
 827           ( i_mode & PLAYLIST_SPREPARSE &&
 828             ( EMPTY_STR( psz_artist ) || ( EMPTY_STR( psz_album ) ) )
 829           ) ) )
 830         playlist_PreparseEnqueue( p_playlist, p_item_cat->p_input, pl_Locked );
 831     /* If we already have it, signal it */
 832     else if( !EMPTY_STR( psz_artist ) && !EMPTY_STR( psz_album ) )
 833         input_item_SetPreparsed( p_item_cat->p_input, true );
 834     free( psz_artist );
 835     free( psz_album );
 836 }
 837
 838 /* Add the playlist item to the requested node and fire a notification */
 839 static void AddItem( playlist_t *p_playlist, playlist_item_t *p_item,
 840                      playlist_item_t *p_node, int i_mode, int i_pos )
 841 {
 842     PL_ASSERT_LOCKED;
 843     ARRAY_APPEND(p_playlist->items, p_item);
 844     ARRAY_APPEND(p_playlist->all_items, p_item);
 845
 846     if( i_pos == PLAYLIST_END )
 847         playlist_NodeAppend( p_playlist, p_item, p_node );
 848     else
 849         playlist_NodeInsert( p_playlist, p_item, p_node, i_pos );
 850
 851     if( !pl_priv(p_playlist)->b_doing_ml )
 852         playlist_SendAddNotify( p_playlist, p_item->i_id, p_node->i_id,
 853                                  !( i_mode & PLAYLIST_NO_REBUILD ) );
 854 }
 855
 856 /* Actually convert an item to a node */
 857 static void ChangeToNode( playlist_t *p_playlist, playlist_item_t *p_item )
 858 {
 859     int i;
 860     if( p_item->i_children == -1 )
 861         p_item->i_children = 0;
 862
 863     /* Remove it from the array of available items */
 864     ARRAY_BSEARCH( p_playlist->items,->i_id, int, p_item->i_id, i );
 865     if( i != -1 )
 866         ARRAY_REMOVE( p_playlist->items, i );
 867 }
 868
 869 /* Do the actual removal */
 870 static int DeleteInner( playlist_t * p_playlist, playlist_item_t *p_item,
 871                         bool b_stop )
 872 {
 873     int i;
 874     int i_id = p_item->i_id;
 875     PL_ASSERT_LOCKED;
 876
 877     if( p_item->i_children > -1 )
 878     {
 879         return playlist_NodeDelete( p_playlist, p_item, true, false );
 880     }
 881     pl_priv(p_playlist)->b_reset_currently_playing = true;
 882     var_SetInteger( p_playlist, "playlist-item-deleted", i_id );
 883
 884     /* Remove the item from the bank */
 885     ARRAY_BSEARCH( p_playlist->all_items,->i_id, int, i_id, i );
 886     if( i != -1 )
 887         ARRAY_REMOVE( p_playlist->all_items, i );
 888
 889     ARRAY_BSEARCH( p_playlist->items,->i_id, int, i_id, i );
 890     if( i != -1 )
 891         ARRAY_REMOVE( p_playlist->items, i );
 892
 893     /* Check if it is the current item */
 894     if( get_current_status_item( p_playlist ) == p_item )
 895     {
 896         /* Stop it if we have to */
 897         if( b_stop )
 898         {
 899             playlist_Control( p_playlist, PLAYLIST_STOP, pl_Locked );
 900             msg_Info( p_playlist, "stopping playback" );
 901         }
 902         /* In any case, this item can't be the next one to be played ! */
 903         set_current_status_item( p_playlist, NULL );
 904     }
 905
 906     ARRAY_BSEARCH( p_playlist->current,->i_id, int, i_id, i );
 907     if( i != -1 )
 908         ARRAY_REMOVE( p_playlist->current, i );
 909
 910     PL_DEBUG( "deleting item `%s'", p_item->p_input->psz_name );
 911
 912     /* Remove the item from its parent */
 913     playlist_NodeRemoveItem( p_playlist, p_item, p_item->p_parent );
 914
 915     playlist_ItemRelease( p_item );
 916
 917     return VLC_SUCCESS;
 918 }