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         bool b_stop = p_item_in_category->i_flags & PLAYLIST_SUBITEM_STOP_FLAG;
  86
  87         b_play = b_play &&
  88             p_item_in_category == get_current_status_item( p_playlist ) &&
  89             p_item_in_category->i_children == -1;
  90
  91         /* If this item is already a node don't transform it */
  92         if( p_item_in_category->i_children == -1 )
  93         {
  94             p_item_in_category = ItemToNode( p_playlist,
  95                     p_item_in_category, pl_Locked );
  96             p_item_in_category->p_input->i_type = ITEM_TYPE_PLAYLIST;
  97         }
  98
  99         int i_ret = playlist_BothAddInput( p_playlist, p_child,
 100                 p_item_in_category,
 101                 PLAYLIST_APPEND | PLAYLIST_SPREPARSE , PLAYLIST_END,
 102                 NULL, NULL, pl_Locked );
 103
 104         if( i_ret == VLC_SUCCESS && b_play )
 105         {
 106             if( b_stop )
 107             {
 108                 p_item_in_category->i_flags &= ~PLAYLIST_SUBITEM_STOP_FLAG;
 109                 PL_UNLOCK;
 110                 playlist_Stop( p_playlist );
 111                 return;
 112             }
 113             playlist_Control( p_playlist, PLAYLIST_VIEWPLAY,
 114                           pl_Locked, p_item_in_category, NULL );
 115         }
 116     }
 117
 118     PL_UNLOCK;
 119
 120 }
 121
 122 /*****************************************************************************
 123  * An input item's meta or duration has changed (Event Callback)
 124  *****************************************************************************/
 125 static void input_item_changed( const vlc_event_t * p_event,
 126                                 void * user_data )
 127 {
 128     playlist_item_t *p_item = user_data;
 129     VLC_UNUSED( p_event );
 130     var_SetAddress( p_item->p_playlist, "item-change", p_item->p_input );
 131 }
 132
 133 /*****************************************************************************
 134  * Listen to vlc_InputItemAddSubItem event
 135  *****************************************************************************/
 136 static void install_input_item_observer( playlist_item_t * p_item )
 137 {
 138     vlc_event_manager_t * p_em = &p_item->p_input->event_manager;
 139     vlc_event_attach( p_em, vlc_InputItemSubItemAdded,
 140                       input_item_subitem_added, p_item );
 141     vlc_event_attach( p_em, vlc_InputItemDurationChanged,
 142                       input_item_changed, p_item );
 143     vlc_event_attach( p_em, vlc_InputItemMetaChanged,
 144                       input_item_changed, p_item );
 145     vlc_event_attach( p_em, vlc_InputItemNameChanged,
 146                       input_item_changed, p_item );
 147     vlc_event_attach( p_em, vlc_InputItemInfoChanged,
 148                       input_item_changed, p_item );
 149     vlc_event_attach( p_em, vlc_InputItemErrorWhenReadingChanged,
 150                       input_item_changed, p_item );
 151 }
 152
 153 static void uninstall_input_item_observer( playlist_item_t * p_item )
 154 {
 155     vlc_event_manager_t * p_em = &p_item->p_input->event_manager;
 156     vlc_event_detach( p_em, vlc_InputItemSubItemAdded,
 157                       input_item_subitem_added, p_item );
 158     vlc_event_detach( p_em, vlc_InputItemMetaChanged,
 159                       input_item_changed, p_item );
 160     vlc_event_detach( p_em, vlc_InputItemDurationChanged,
 161                       input_item_changed, p_item );
 162     vlc_event_detach( p_em, vlc_InputItemNameChanged,
 163                       input_item_changed, p_item );
 164     vlc_event_detach( p_em, vlc_InputItemInfoChanged,
 165                       input_item_changed, p_item );
 166     vlc_event_detach( p_em, vlc_InputItemErrorWhenReadingChanged,
 167                       input_item_changed, p_item );
 168 }
 169
 170 /*****************************************************************************
 171  * Playlist item creation
 172  *****************************************************************************/
 173 playlist_item_t *playlist_ItemNewFromInput( playlist_t *p_playlist,
 174                                               input_item_t *p_input, bool install_observer )
 175 {
 176     playlist_item_t* p_item = malloc( sizeof( playlist_item_t ) );
 177     if( !p_item )
 178         return NULL;
 179
 180     assert( p_input );
 181
 182     p_item->p_input = p_input;
 183     vlc_gc_incref( p_item->p_input );
 184
 185     p_item->i_id = ++pl_priv(p_playlist)->i_last_playlist_id;
 186
 187     p_item->p_parent = NULL;
 188     p_item->i_children = -1;
 189     p_item->pp_children = NULL;
 190     p_item->i_flags = 0;
 191     p_item->p_playlist = p_playlist;
 192     p_item->b_input_item_observer = install_observer;
 193
 194     if( install_observer )
 195         install_input_item_observer( p_item );
 196
 197     return p_item;
 198 }
 199
 200 /***************************************************************************
 201  * Playlist item destruction
 202  ***************************************************************************/
 203
 204 /**
 205  * Release an item
 206  *
 207  * \param p_item item to delete
 208  * \return VLC_SUCCESS
 209 */
 210 int playlist_ItemRelease( playlist_item_t *p_item )
 211 {
 212     /* For the assert */
 213     playlist_t *p_playlist = p_item->p_playlist;
 214     PL_ASSERT_LOCKED;
 215
 216     /* Surprise, we can't actually do more because we
 217      * don't do refcounting, or eauivalent.
 218      * Because item are not only accessed by their id
 219      * using playlist_item outside the PL_LOCK isn't safe.
 220      * Most of the modules does that.
 221      *
 222      * Who wants to add proper memory management? */
 223     if( p_item->b_input_item_observer )
 224         uninstall_input_item_observer( p_item );
 225     ARRAY_APPEND( pl_priv(p_playlist)->items_to_delete, p_item);
 226     return VLC_SUCCESS;
 227 }
 228
 229 /**
 230  * Delete input item
 231  *
 232  * Remove an input item when it appears from a root playlist item
 233  * \param p_playlist playlist object
 234  * \param p_input the input to delete
 235  * \param p_root root playlist item
 236  * \param b_do_stop must stop or not the playlist
 237  * \return VLC_SUCCESS or VLC_EGENERIC
 238 */
 239 static int DeleteFromInput( playlist_t *p_playlist, input_item_t *p_input,
 240                             playlist_item_t *p_root, bool b_do_stop )
 241 {
 242     int i;
 243     PL_ASSERT_LOCKED;
 244     for( i = 0 ; i< p_root->i_children ; i++ )
 245     {
 246         if( p_root->pp_children[i]->i_children == -1 &&
 247             p_root->pp_children[i]->p_input == p_input )
 248         {
 249             DeleteInner( p_playlist, p_root->pp_children[i], b_do_stop );
 250             return VLC_SUCCESS;
 251         }
 252         else if( p_root->pp_children[i]->i_children >= 0 )
 253         {
 254             int i_ret = DeleteFromInput( p_playlist, p_input,
 255                                          p_root->pp_children[i], b_do_stop );
 256             if( i_ret == VLC_SUCCESS ) return VLC_SUCCESS;
 257         }
 258     }
 259     return VLC_EGENERIC;
 260 }
 261
 262 /**
 263  * Delete input item
 264  *
 265  * Remove an input item when it appears from a root playlist item
 266  * \param p_playlist playlist object
 267  * \param p_input the input to delete
 268  * \param p_root root playlist item
 269  * \param b_locked TRUE if the playlist is locked
 270  * \return VLC_SUCCESS or VLC_EGENERIC
 271  */
 272 int playlist_DeleteFromInputInParent( playlist_t *p_playlist,
 273                                       input_item_t *p_item,
 274                                       playlist_item_t *p_root, bool b_locked )
 275 {
 276     int i_ret;
 277     PL_LOCK_IF( !b_locked );
 278     i_ret = DeleteFromInput( p_playlist, p_item, p_root, true );
 279     PL_UNLOCK_IF( !b_locked );
 280     return i_ret;
 281 }
 282
 283 /**
 284  * Delete from input
 285  *
 286  * Remove an input item from ONELEVEL and CATEGORY
 287  * \param p_playlist playlist object
 288  * \param p_input the input to delete
 289  * \param b_locked TRUE if the playlist is locked
 290  * \return VLC_SUCCESS or VLC_ENOITEM
 291  */
 292 int playlist_DeleteFromInput( playlist_t *p_playlist, input_item_t *p_input,
 293                               bool b_locked )
 294 {
 295     int i_ret1, i_ret2;
 296     PL_LOCK_IF( !b_locked );
 297     i_ret1 = DeleteFromInput( p_playlist, p_input,
 298                              p_playlist->p_root_category, true );
 299     i_ret2 = DeleteFromInput( p_playlist, p_input,
 300                      p_playlist->p_root_onelevel, true );
 301     PL_UNLOCK_IF( !b_locked );
 302     return ( i_ret1 == VLC_SUCCESS || i_ret2 == VLC_SUCCESS ) ?
 303                             VLC_SUCCESS : VLC_ENOITEM;
 304 }
 305
 306 /**
 307  * Clear the playlist
 308  *
 309  * \param p_playlist playlist object
 310  * \param b_locked TRUE if the playlist is locked
 311  * \return nothing
 312  */
 313 void playlist_Clear( playlist_t * p_playlist, bool b_locked )
 314 {
 315     PL_LOCK_IF( !b_locked );
 316     playlist_NodeEmpty( p_playlist, p_playlist->p_local_category, true );
 317     playlist_NodeEmpty( p_playlist, p_playlist->p_local_onelevel, true );
 318     PL_UNLOCK_IF( !b_locked );
 319 }
 320
 321 /**
 322  * Delete playlist item
 323  *
 324  * Remove a playlist item from the playlist, given its id
 325  * This function is to be used only by the playlist
 326  * \param p_playlist playlist object
 327  * \param i_id id of the item do delete
 328  * \return VLC_SUCCESS or an error
 329  */
 330 int playlist_DeleteFromItemId( playlist_t *p_playlist, int i_id )
 331 {
 332     PL_ASSERT_LOCKED;
 333     playlist_item_t *p_item = playlist_ItemGetById( p_playlist, i_id );
 334     if( !p_item ) return VLC_EGENERIC;
 335     return DeleteInner( p_playlist, p_item, true );
 336 }
 337
 338 /***************************************************************************
 339  * Playlist item addition
 340  ***************************************************************************/
 341 /**
 342  * Playlist add
 343  *
 344  * Add an item to the playlist or the media library
 345  * \param p_playlist the playlist to add into
 346  * \param psz_uri the mrl to add to the playlist
 347  * \param psz_name a text giving a name or description of this item
 348  * \param i_mode the mode used when adding
 349  * \param i_pos the position in the playlist where to add. If this is
 350  *        PLAYLIST_END the item will be added at the end of the playlist
 351  *        regardless of its size
 352  * \param b_playlist TRUE for playlist, FALSE for media library
 353  * \param b_locked TRUE if the playlist is locked
 354  * \return VLC_SUCCESS or a VLC error code
 355  */
 356 int playlist_Add( playlist_t *p_playlist, const char *psz_uri,
 357                   const char *psz_name, int i_mode, int i_pos,
 358                   bool b_playlist, bool b_locked )
 359 {
 360     return playlist_AddExt( p_playlist, psz_uri, psz_name,
 361                             i_mode, i_pos, -1, 0, NULL, 0, b_playlist, b_locked );
 362 }
 363
 364 /**
 365  * Add a MRL into the playlist or the media library, duration and options given
 366  *
 367  * \param p_playlist the playlist to add into
 368  * \param psz_uri the mrl to add to the playlist
 369  * \param psz_name a text giving a name or description of this item
 370  * \param i_mode the mode used when adding
 371  * \param i_pos the position in the playlist where to add. If this is
 372  *        PLAYLIST_END the item will be added at the end of the playlist
 373  *        regardless of its size
 374  * \param i_duration length of the item in milliseconds.
 375  * \param i_options the number of options
 376  * \param ppsz_options an array of options
 377  * \param i_option_flags options flags
 378  * \param b_playlist TRUE for playlist, FALSE for media library
 379  * \param b_locked TRUE if the playlist is locked
 380  * \return VLC_SUCCESS or a VLC error code
 381 */
 382 int playlist_AddExt( playlist_t *p_playlist, const char * psz_uri,
 383                      const char *psz_name, int i_mode, int i_pos,
 384                      mtime_t i_duration,
 385                      int i_options, const char *const *ppsz_options,
 386                      unsigned i_option_flags,
 387                      bool b_playlist, bool b_locked )
 388 {
 389     int i_ret;
 390     input_item_t *p_input;
 391
 392     p_input = input_item_NewExt( p_playlist, psz_uri, psz_name,
 393                                  i_options, ppsz_options, i_option_flags,
 394                                  i_duration );
 395     if( p_input == NULL )
 396         return VLC_ENOMEM;
 397     i_ret = playlist_AddInput( p_playlist, p_input, i_mode, i_pos, b_playlist,
 398                                b_locked );
 399     vlc_gc_decref( p_input );
 400     return i_ret;
 401 }
 402
 403 /**
 404  * Add an input item to the playlist node
 405  *
 406  * \param p_playlist the playlist to add into
 407  * \param p_input the input item to add
 408  * \param i_mode the mode used when adding
 409  * \param i_pos the position in the playlist where to add. If this is
 410  *        PLAYLIST_END the item will be added at the end of the playlist
 411  *        regardless of its size
 412  * \param b_playlist TRUE for playlist, FALSE for media library
 413  * \param b_locked TRUE if the playlist is locked
 414  * \return VLC_SUCCESS or VLC_ENOMEM or VLC_EGENERIC
 415 */
 416 int playlist_AddInput( playlist_t* p_playlist, input_item_t *p_input,
 417                        int i_mode, int i_pos, bool b_playlist,
 418                        bool b_locked )
 419 {
 420     playlist_item_t *p_item_cat, *p_item_one;
 421     if( p_playlist->b_die ) return VLC_EGENERIC;
 422     if( !pl_priv(p_playlist)->b_doing_ml )
 423         PL_DEBUG( "adding item `%s' ( %s )", p_input->psz_name,
 424                                              p_input->psz_uri );
 425
 426     PL_LOCK_IF( !b_locked );
 427
 428     /* Add to ONELEVEL */
 429     p_item_one = playlist_ItemNewFromInput( p_playlist, p_input, false );
 430     if( p_item_one == NULL ) return VLC_ENOMEM;
 431     AddItem( p_playlist, p_item_one,
 432              b_playlist ? p_playlist->p_local_onelevel :
 433                           p_playlist->p_ml_onelevel , i_mode, i_pos );
 434
 435     /* Add to CATEGORY */
 436     p_item_cat = playlist_ItemNewFromInput( p_playlist, p_input, true );
 437     if( p_item_cat == NULL ) return VLC_ENOMEM;
 438     AddItem( p_playlist, p_item_cat,
 439              b_playlist ? p_playlist->p_local_category :
 440                           p_playlist->p_ml_category , i_mode, i_pos );
 441
 442     GoAndPreparse( p_playlist, i_mode, p_item_cat, p_item_one );
 443
 444     PL_UNLOCK_IF( !b_locked );
 445     return VLC_SUCCESS;
 446 }
 447
 448 /**
 449  * Add input
 450  *
 451  * Add an input item to p_direct_parent in the category tree, and to the
 452  * matching top category in onelevel
 453  * \param p_playlist the playlist to add into
 454  * \param p_input the input item to add
 455  * \param p_direct_parent the parent item to add into
 456  * \param i_mode the mode used when adding
 457  * \param i_pos the position in the playlist where to add. If this is
 458  *        PLAYLIST_END the item will be added at the end of the playlist
 459  *        regardless of its size
 460  * \param i_cat id of the items category
 461  * \param i_one id of the item onelevel category
 462  * \param b_locked TRUE if the playlist is locked
 463  * \return VLC_SUCCESS if success, VLC_EGENERIC if fail, VLC_ENOMEM if OOM
 464  */
 465 int playlist_BothAddInput( playlist_t *p_playlist,
 466                            input_item_t *p_input,
 467                            playlist_item_t *p_direct_parent,
 468                            int i_mode, int i_pos,
 469                            int *i_cat, int *i_one, bool b_locked )
 470 {
 471     playlist_item_t *p_item_cat, *p_item_one, *p_up;
 472     int i_top;
 473     assert( p_input );
 474
 475     if( !vlc_object_alive( p_playlist ) )
 476         return VLC_EGENERIC;
 477
 478     PL_LOCK_IF( !b_locked );
 479
 480     /* Add to category */
 481     p_item_cat = playlist_ItemNewFromInput( p_playlist, p_input, true );
 482     if( p_item_cat == NULL ) return VLC_ENOMEM;
 483     AddItem( p_playlist, p_item_cat, p_direct_parent, i_mode, i_pos );
 484
 485     /* Add to onelevel */
 486     /** \todo make a faster case for ml import */
 487     p_item_one = playlist_ItemNewFromInput( p_playlist, p_input, false );
 488     if( p_item_one == NULL ) return VLC_ENOMEM;
 489
 490     p_up = p_direct_parent;
 491     while( p_up->p_parent != p_playlist->p_root_category )
 492     {
 493         p_up = p_up->p_parent;
 494     }
 495     for( i_top = 0 ; i_top < p_playlist->p_root_onelevel->i_children; i_top++ )
 496     {
 497         if( p_playlist->p_root_onelevel->pp_children[i_top]->p_input ==
 498                              p_up->p_input )
 499         {
 500             AddItem( p_playlist, p_item_one,
 501                      p_playlist->p_root_onelevel->pp_children[i_top],
 502                      i_mode, i_pos );
 503             break;
 504         }
 505     }
 506     GoAndPreparse( p_playlist, i_mode, p_item_cat, p_item_one );
 507
 508     if( i_cat ) *i_cat = p_item_cat->i_id;
 509     if( i_one ) *i_one = p_item_one->i_id;
 510
 511     PL_UNLOCK_IF( !b_locked );
 512     return VLC_SUCCESS;
 513 }
 514
 515 /**
 516  * Add an input item to a given node
 517  *
 518  * \param p_playlist the playlist to add into
 519  * \param p_input the input item to add
 520  * \param p_parent the parent item to add into
 521  * \param i_mode the mode used when addin
 522  * \param i_pos the position in the playlist where to add. If this is
 523  *        PLAYLIST_END the item will be added at the end of the playlist
 524  *        regardless of its size
 525  * \param b_locked TRUE if the playlist is locked
 526  * \return the new playlist item
 527  */
 528 playlist_item_t * playlist_NodeAddInput( playlist_t *p_playlist,
 529                                          input_item_t *p_input,
 530                                          playlist_item_t *p_parent,
 531                                          int i_mode, int i_pos,
 532                                          bool b_locked )
 533 {
 534     playlist_item_t *p_item;
 535     assert( p_input );
 536     assert( p_parent && p_parent->i_children != -1 );
 537
 538     if( p_playlist->b_die )
 539         return NULL;
 540     PL_LOCK_IF( !b_locked );
 541
 542     p_item = playlist_ItemNewFromInput( p_playlist, p_input, true );
 543     if( p_item == NULL ) return NULL;
 544     AddItem( p_playlist, p_item, p_parent, i_mode, i_pos );
 545
 546     PL_UNLOCK_IF( !b_locked );
 547
 548     return p_item;
 549 }
 550
 551 /*****************************************************************************
 552  * Playlist item misc operations
 553  *****************************************************************************/
 554
 555 /**
 556  * Item to node
 557  *
 558  * Transform an item to a node. Return the node in the category tree, or NULL
 559  * if not found there
 560  * This function must be entered without the playlist lock
 561  * \param p_playlist the playlist object
 562  * \param p_item the item to transform
 563  * \param b_locked TRUE if the playlist is locked
 564  * \return the item transform in a node
 565  */
 566 static playlist_item_t *ItemToNode( playlist_t *p_playlist,
 567                                     playlist_item_t *p_item,
 568                                     bool b_locked )
 569 {
 570
 571     playlist_item_t *p_item_in_category;
 572     /* What we do
 573      * Find the input in CATEGORY.
 574      *  - If we find it
 575      *    - change it to node
 576      *    - we'll return it at the end
 577      *    - If we are a direct child of onelevel root, change to node, else
 578      *      delete the input from ONELEVEL
 579      *  - If we don't find it, just change to node (we are probably in VLM)
 580      *    and return NULL
 581      *
 582      * If we were in ONELEVEL, we thus retrieve the node in CATEGORY (will be
 583      * useful for later BothAddInput )
 584      */
 585
 586     PL_LOCK_IF( !b_locked );
 587
 588     /* Fast track the media library, no time to loose */
 589     if( p_item == p_playlist->p_ml_category ) {
 590         PL_UNLOCK_IF( !b_locked );
 591         return p_item;
 592     }
 593
 594     /** \todo First look if we don't already have it */
 595     p_item_in_category = playlist_ItemFindFromInputAndRoot(
 596                                             p_playlist, p_item->p_input,
 597                                             p_playlist->p_root_category,
 598                                             true );
 599
 600     if( p_item_in_category )
 601     {
 602         playlist_item_t *p_item_in_one = playlist_ItemFindFromInputAndRoot(
 603                                             p_playlist, p_item->p_input,
 604                                             p_playlist->p_root_onelevel,
 605                                             true );
 606         assert( p_item_in_one );
 607
 608         /* We already have it, and there is nothing more to do */
 609         ChangeToNode( p_playlist, p_item_in_category );
 610
 611         /* Item in one is a root, change it to node */
 612         if( p_item_in_one->p_parent == p_playlist->p_root_onelevel )
 613             ChangeToNode( p_playlist, p_item_in_one );
 614         else
 615         {
 616             playlist_item_t *p_status_item = get_current_status_item( p_playlist );
 617             playlist_item_t *p_status_node = get_current_status_node( p_playlist );
 618             if( p_item_in_one == p_status_item )
 619             {
 620                 /* We're deleting the current playlist item. Update
 621                  * the playlist object to point at the previous item
 622                  * so the playlist won't be restarted */
 623                 playlist_item_t *p_prev_status_item = NULL;
 624                 int i = 0;
 625                 while( i < p_status_node->i_children &&
 626                        p_status_node->pp_children[i] != p_status_item )
 627                 {
 628                     p_prev_status_item = p_status_node->pp_children[i];
 629                     i++;
 630                 }
 631                 if( i == p_status_node->i_children )
 632                     p_prev_status_item = NULL;
 633                 if( p_prev_status_item )
 634                     set_current_status_item( p_playlist, p_prev_status_item );
 635             }
 636             DeleteFromInput( p_playlist, p_item_in_one->p_input,
 637                              p_playlist->p_root_onelevel, false );
 638         }
 639         pl_priv(p_playlist)->b_reset_currently_playing = true;
 640         vlc_cond_signal( &pl_priv(p_playlist)->signal );
 641         var_SetAddress( p_playlist, "item-change", p_item_in_category->p_input );
 642         var_SetAddress( p_playlist, "leaf-to-parent", p_item_in_category->p_input );
 643         PL_UNLOCK_IF( !b_locked );
 644         return p_item_in_category;
 645     }
 646     else
 647     {
 648         ChangeToNode( p_playlist, p_item );
 649         PL_UNLOCK_IF( !b_locked );
 650         return p_item;
 651     }
 652 }
 653
 654 /**
 655  * Find an item within a root, given its input id.
 656  *
 657  * \param p_playlist the playlist object
 658  * \param p_item the input item
 659  * \param p_root root playlist item
 660  * \param b_items_only TRUE if we want the item himself
 661  * \return the first found item, or NULL if not found
 662  */
 663 playlist_item_t *playlist_ItemFindFromInputAndRoot( playlist_t *p_playlist,
 664                                                     input_item_t *p_item,
 665                                                     playlist_item_t *p_root,
 666                                                     bool b_items_only )
 667 {
 668     int i;
 669     for( i = 0 ; i< p_root->i_children ; i++ )
 670     {
 671         if( ( b_items_only ? p_root->pp_children[i]->i_children == -1 : 1 ) &&
 672             p_root->pp_children[i]->p_input == p_item )
 673         {
 674             return p_root->pp_children[i];
 675         }
 676         else if( p_root->pp_children[i]->i_children >= 0 )
 677         {
 678             playlist_item_t *p_search =
 679                  playlist_ItemFindFromInputAndRoot( p_playlist, p_item,
 680                                                     p_root->pp_children[i],
 681                                                     b_items_only );
 682             if( p_search ) return p_search;
 683         }
 684     }
 685     return NULL;
 686 }
 687
 688
 689 static int ItemIndex ( playlist_item_t *p_item )
 690 {
 691     for( int i = 0; i < p_item->p_parent->i_children; i++ )
 692         if( p_item->p_parent->pp_children[i] == p_item ) return i;
 693     return -1;
 694 }
 695
 696 /**
 697  * Moves an item
 698  *
 699  * This function must be entered with the playlist lock
 700  *
 701  * \param p_playlist the playlist
 702  * \param p_item the item to move
 703  * \param p_node the new parent of the item
 704  * \param i_newpos the new position under this new parent
 705  * \return VLC_SUCCESS or an error
 706  */
 707 int playlist_TreeMove( playlist_t * p_playlist, playlist_item_t *p_item,
 708                        playlist_item_t *p_node, int i_newpos )
 709 {
 710     PL_ASSERT_LOCKED;
 711
 712     if( p_node->i_children == -1 ) return VLC_EGENERIC;
 713
 714     playlist_item_t *p_detach = p_item->p_parent;
 715     int i_index = ItemIndex( p_item );
 716
 717     REMOVE_ELEM( p_detach->pp_children, p_detach->i_children, i_index );
 718
 719     if( p_detach == p_node && i_index < i_newpos )
 720         i_newpos--;
 721
 722     INSERT_ELEM( p_node->pp_children, p_node->i_children, i_newpos, p_item );
 723     p_item->p_parent = p_node;
 724
 725     pl_priv( p_playlist )->b_reset_currently_playing = true;
 726     vlc_cond_signal( &pl_priv( p_playlist )->signal );
 727     return VLC_SUCCESS;
 728 }
 729
 730 /**
 731  * Moves an array of items
 732  *
 733  * This function must be entered with the playlist lock
 734  *
 735  * \param p_playlist the playlist
 736  * \param i_items the number of indexes to move
 737  * \param pp_items the array of indexes to move
 738  * \param p_node the target node
 739  * \param i_newpos the target position under this node
 740  * \return VLC_SUCCESS or an error
 741  */
 742 int playlist_TreeMoveMany( playlist_t *p_playlist,
 743                             int i_items, playlist_item_t **pp_items,
 744                             playlist_item_t *p_node, int i_newpos )
 745 {
 746     PL_ASSERT_LOCKED;
 747
 748     if ( p_node->i_children == -1 ) return VLC_EGENERIC;
 749
 750     int i;
 751     for( i = 0; i < i_items; i++ )
 752     {
 753         playlist_item_t *p_item = pp_items[i];
 754         int i_index = ItemIndex( p_item );
 755         playlist_item_t *p_parent = p_item->p_parent;
 756         REMOVE_ELEM( p_parent->pp_children, p_parent->i_children, i_index );
 757         if ( p_parent == p_node && i_index < i_newpos ) i_newpos--;
 758     }
 759     for( i = i_items - 1; i >= 0; i-- )
 760     {
 761         playlist_item_t *p_item = pp_items[i];
 762         INSERT_ELEM( p_node->pp_children, p_node->i_children, i_newpos, p_item );
 763         p_item->p_parent = p_node;
 764     }
 765
 766     pl_priv( p_playlist )->b_reset_currently_playing = true;
 767     vlc_cond_signal( &pl_priv( p_playlist )->signal );
 768     return VLC_SUCCESS;
 769 }
 770
 771 /**
 772  * Send a notification that an item has been added to a node
 773  *
 774  * \param p_playlist the playlist object
 775  * \param i_item_id id of the item added
 776  * \param i_node_id id of the node in wich the item was added
 777  * \param b_signal TRUE if the function must send a signal
 778  * \return nothing
 779  */
 780 void playlist_SendAddNotify( playlist_t *p_playlist, int i_item_id,
 781                              int i_node_id, bool b_signal )
 782 {
 783     playlist_private_t *p_sys = pl_priv(p_playlist);
 784     PL_ASSERT_LOCKED;
 785
 786     p_sys->b_reset_currently_playing = true;
 787     if( b_signal )
 788         vlc_cond_signal( &p_sys->signal );
 789
 790     playlist_add_t add;
 791     add.i_item = i_item_id;
 792     add.i_node = i_node_id;
 793
 794     vlc_value_t val;
 795     val.p_address = &add;
 796
 797     var_Set( p_playlist, "playlist-item-append", val );
 798 }
 799
 800 /***************************************************************************
 801  * The following functions are local
 802  ***************************************************************************/
 803
 804 /* Enqueue an item for preparsing, and play it, if needed */
 805 static void GoAndPreparse( playlist_t *p_playlist, int i_mode,
 806                            playlist_item_t *p_item_cat,
 807                            playlist_item_t *p_item_one )
 808 {
 809     PL_ASSERT_LOCKED;
 810     if( (i_mode & PLAYLIST_GO ) )
 811     {
 812         playlist_item_t *p_parent = p_item_one;
 813         playlist_item_t *p_toplay = NULL;
 814         while( p_parent )
 815         {
 816             if( p_parent == p_playlist->p_root_category )
 817             {
 818                 p_toplay = p_item_cat; break;
 819             }
 820             else if( p_parent == p_playlist->p_root_onelevel )
 821             {
 822                 p_toplay = p_item_one; break;
 823             }
 824             p_parent = p_parent->p_parent;
 825         }
 826         assert( p_toplay );
 827         pl_priv(p_playlist)->request.b_request = true;
 828         pl_priv(p_playlist)->request.i_skip = 0;
 829         pl_priv(p_playlist)->request.p_item = p_toplay;
 830         if( pl_priv(p_playlist)->p_input )
 831             input_Stop( pl_priv(p_playlist)->p_input, true );
 832         pl_priv(p_playlist)->request.i_status = PLAYLIST_RUNNING;
 833         vlc_cond_signal( &pl_priv(p_playlist)->signal );
 834     }
 835     /* Preparse if PREPARSE or SPREPARSE & not enough meta */
 836     char *psz_artist = input_item_GetArtist( p_item_cat->p_input );
 837     char *psz_album = input_item_GetAlbum( p_item_cat->p_input );
 838     if( pl_priv(p_playlist)->b_auto_preparse &&
 839           (i_mode & PLAYLIST_PREPARSE ||
 840           ( i_mode & PLAYLIST_SPREPARSE &&
 841             ( EMPTY_STR( psz_artist ) || ( EMPTY_STR( psz_album ) ) )
 842           ) ) )
 843         playlist_PreparseEnqueue( p_playlist, p_item_cat->p_input, pl_Locked );
 844     /* If we already have it, signal it */
 845     else if( !EMPTY_STR( psz_artist ) && !EMPTY_STR( psz_album ) )
 846         input_item_SetPreparsed( p_item_cat->p_input, true );
 847     free( psz_artist );
 848     free( psz_album );
 849 }
 850
 851 /* Add the playlist item to the requested node and fire a notification */
 852 static void AddItem( playlist_t *p_playlist, playlist_item_t *p_item,
 853                      playlist_item_t *p_node, int i_mode, int i_pos )
 854 {
 855     PL_ASSERT_LOCKED;
 856     ARRAY_APPEND(p_playlist->items, p_item);
 857     ARRAY_APPEND(p_playlist->all_items, p_item);
 858
 859     if( i_pos == PLAYLIST_END )
 860         playlist_NodeAppend( p_playlist, p_item, p_node );
 861     else
 862         playlist_NodeInsert( p_playlist, p_item, p_node, i_pos );
 863
 864     if( !pl_priv(p_playlist)->b_doing_ml )
 865         playlist_SendAddNotify( p_playlist, p_item->i_id, p_node->i_id,
 866                                  !( i_mode & PLAYLIST_NO_REBUILD ) );
 867 }
 868
 869 /* Actually convert an item to a node */
 870 static void ChangeToNode( playlist_t *p_playlist, playlist_item_t *p_item )
 871 {
 872     int i;
 873     if( p_item->i_children == -1 )
 874         p_item->i_children = 0;
 875
 876     /* Remove it from the array of available items */
 877     ARRAY_BSEARCH( p_playlist->items,->i_id, int, p_item->i_id, i );
 878     if( i != -1 )
 879         ARRAY_REMOVE( p_playlist->items, i );
 880 }
 881
 882 /* Do the actual removal */
 883 static int DeleteInner( playlist_t * p_playlist, playlist_item_t *p_item,
 884                         bool b_stop )
 885 {
 886     int i;
 887     int i_id = p_item->i_id;
 888     PL_ASSERT_LOCKED;
 889
 890     if( p_item->i_children > -1 )
 891     {
 892         return playlist_NodeDelete( p_playlist, p_item, true, false );
 893     }
 894     pl_priv(p_playlist)->b_reset_currently_playing = true;
 895     var_SetInteger( p_playlist, "playlist-item-deleted", i_id );
 896
 897     /* Remove the item from the bank */
 898     ARRAY_BSEARCH( p_playlist->all_items,->i_id, int, i_id, i );
 899     if( i != -1 )
 900         ARRAY_REMOVE( p_playlist->all_items, i );
 901
 902     ARRAY_BSEARCH( p_playlist->items,->i_id, int, i_id, i );
 903     if( i != -1 )
 904         ARRAY_REMOVE( p_playlist->items, i );
 905
 906     /* Check if it is the current item */
 907     if( get_current_status_item( p_playlist ) == p_item )
 908     {
 909         /* Stop it if we have to */
 910         if( b_stop )
 911         {
 912             playlist_Control( p_playlist, PLAYLIST_STOP, pl_Locked );
 913             msg_Info( p_playlist, "stopping playback" );
 914         }
 915         /* In any case, this item can't be the next one to be played ! */
 916         set_current_status_item( p_playlist, NULL );
 917     }
 918
 919     ARRAY_BSEARCH( p_playlist->current,->i_id, int, i_id, i );
 920     if( i != -1 )
 921         ARRAY_REMOVE( p_playlist->current, i );
 922
 923     PL_DEBUG( "deleting item `%s'", p_item->p_input->psz_name );
 924
 925     /* Remove the item from its parent */
 926     playlist_NodeRemoveItem( p_playlist, p_item, p_item->p_parent );
 927
 928     playlist_ItemRelease( p_item );
 929
 930     return VLC_SUCCESS;
 931 }