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         PL_UNLOCK_IF( !b_locked );
 630         return p_item_in_category;
 631     }
 632     else
 633     {
 634         ChangeToNode( p_playlist, p_item );
 635         PL_UNLOCK_IF( !b_locked );
 636         return p_item;
 637     }
 638 }
 639
 640 /**
 641  * Find an item within a root, given its input id.
 642  *
 643  * \param p_playlist the playlist object
 644  * \param p_item the input item
 645  * \param p_root root playlist item
 646  * \param b_items_only TRUE if we want the item himself
 647  * \return the first found item, or NULL if not found
 648  */
 649 playlist_item_t *playlist_ItemFindFromInputAndRoot( playlist_t *p_playlist,
 650                                                     input_item_t *p_item,
 651                                                     playlist_item_t *p_root,
 652                                                     bool b_items_only )
 653 {
 654     int i;
 655     for( i = 0 ; i< p_root->i_children ; i++ )
 656     {
 657         if( ( b_items_only ? p_root->pp_children[i]->i_children == -1 : 1 ) &&
 658             p_root->pp_children[i]->p_input == p_item )
 659         {
 660             return p_root->pp_children[i];
 661         }
 662         else if( p_root->pp_children[i]->i_children >= 0 )
 663         {
 664             playlist_item_t *p_search =
 665                  playlist_ItemFindFromInputAndRoot( p_playlist, p_item,
 666                                                     p_root->pp_children[i],
 667                                                     b_items_only );
 668             if( p_search ) return p_search;
 669         }
 670     }
 671     return NULL;
 672 }
 673
 674
 675 static int TreeMove( playlist_t *p_playlist, playlist_item_t *p_item,
 676                      playlist_item_t *p_node, int i_newpos )
 677 {
 678     int j;
 679     playlist_item_t *p_detach = p_item->p_parent;
 680     (void)p_playlist;
 681
 682     if( p_node->i_children == -1 ) return VLC_EGENERIC;
 683
 684     for( j = 0; j < p_detach->i_children; j++ )
 685     {
 686          if( p_detach->pp_children[j] == p_item ) break;
 687     }
 688     REMOVE_ELEM( p_detach->pp_children, p_detach->i_children, j );
 689
 690     /* If j < i_newpos, we are moving the element from the top to the
 691      * down of the playlist. So when removing the element we have
 692      * to change the position as we loose one element
 693      */
 694     if( j < i_newpos )
 695         i_newpos--;
 696
 697     /* Attach to new parent */
 698     INSERT_ELEM( p_node->pp_children, p_node->i_children, i_newpos, p_item );
 699     p_item->p_parent = p_node;
 700
 701     return VLC_SUCCESS;
 702 }
 703
 704 /**
 705  * Moves an item
 706  *
 707  * This function must be entered with the playlist lock
 708  *
 709  * \param p_playlist the playlist
 710  * \param p_item the item to move
 711  * \param p_node the new parent of the item
 712  * \param i_newpos the new position under this new parent
 713  * \return VLC_SUCCESS or an error
 714  */
 715 int playlist_TreeMove( playlist_t * p_playlist, playlist_item_t *p_item,
 716                        playlist_item_t *p_node, int i_newpos )
 717 {
 718     int i_ret;
 719     PL_ASSERT_LOCKED;
 720
 721     /* Drop on a top level node. Move in the two trees */
 722     if( p_node->p_parent == p_playlist->p_root_category ||
 723         p_node->p_parent == p_playlist->p_root_onelevel )
 724     {
 725         /* Fixme: avoid useless lookups but we need some clean helpers */
 726         {
 727             /* Fixme: if we try to move a node on a top-level node, it will
 728              * fail because the node doesn't exist in onelevel and we will
 729              * do some shit in onelevel. We should recursively move all items
 730              * within the node */
 731             playlist_item_t *p_node_onelevel;
 732             playlist_item_t *p_item_onelevel;
 733             p_node_onelevel = playlist_ItemFindFromInputAndRoot( p_playlist,
 734                                                 p_node->p_input,
 735                                                 p_playlist->p_root_onelevel,
 736                                                 false );
 737             p_item_onelevel = playlist_ItemFindFromInputAndRoot( p_playlist,
 738                                                 p_item->p_input,
 739                                                 p_playlist->p_root_onelevel,
 740                                                 false );
 741             if( p_node_onelevel && p_item_onelevel )
 742                 TreeMove( p_playlist, p_item_onelevel, p_node_onelevel, i_newpos );
 743         }
 744         {
 745             playlist_item_t *p_node_category;
 746             playlist_item_t *p_item_category;
 747             p_node_category = playlist_ItemFindFromInputAndRoot( p_playlist,
 748                                                 p_node->p_input,
 749                                                 p_playlist->p_root_category,
 750                                                 false );
 751             p_item_category = playlist_ItemFindFromInputAndRoot( p_playlist,
 752                                                 p_item->p_input,
 753                                                 p_playlist->p_root_category,
 754                                                 false );
 755             if( p_node_category && p_item_category )
 756                 TreeMove( p_playlist, p_item_category, p_node_category, 0 );
 757         }
 758         i_ret = VLC_SUCCESS;
 759     }
 760     else
 761         i_ret = TreeMove( p_playlist, p_item, p_node, i_newpos );
 762     pl_priv(p_playlist)->b_reset_currently_playing = true;
 763     vlc_cond_signal( &pl_priv(p_playlist)->signal );
 764     return i_ret;
 765 }
 766
 767 /**
 768  * Send a notification that an item has been added to a node
 769  *
 770  * \param p_playlist the playlist object
 771  * \param i_item_id id of the item added
 772  * \param i_node_id id of the node in wich the item was added
 773  * \param b_signal TRUE if the function must send a signal
 774  * \return nothing
 775  */
 776 void playlist_SendAddNotify( playlist_t *p_playlist, int i_item_id,
 777                              int i_node_id, bool b_signal )
 778 {
 779     playlist_private_t *p_sys = pl_priv(p_playlist);
 780     PL_ASSERT_LOCKED;
 781
 782     p_sys->b_reset_currently_playing = true;
 783     if( b_signal )
 784         vlc_cond_signal( &p_sys->signal );
 785
 786     playlist_add_t add;
 787     add.i_item = i_item_id;
 788     add.i_node = i_node_id;
 789
 790     vlc_value_t val;
 791     val.p_address = &add;
 792
 793     var_Set( p_playlist, "playlist-item-append", val );
 794 }
 795
 796 /***************************************************************************
 797  * The following functions are local
 798  ***************************************************************************/
 799
 800 /* Enqueue an item for preparsing, and play it, if needed */
 801 static void GoAndPreparse( playlist_t *p_playlist, int i_mode,
 802                            playlist_item_t *p_item_cat,
 803                            playlist_item_t *p_item_one )
 804 {
 805     PL_ASSERT_LOCKED;
 806     if( (i_mode & PLAYLIST_GO ) )
 807     {
 808         playlist_item_t *p_parent = p_item_one;
 809         playlist_item_t *p_toplay = NULL;
 810         while( p_parent )
 811         {
 812             if( p_parent == p_playlist->p_root_category )
 813             {
 814                 p_toplay = p_item_cat; break;
 815             }
 816             else if( p_parent == p_playlist->p_root_onelevel )
 817             {
 818                 p_toplay = p_item_one; break;
 819             }
 820             p_parent = p_parent->p_parent;
 821         }
 822         assert( p_toplay );
 823         pl_priv(p_playlist)->request.b_request = true;
 824         pl_priv(p_playlist)->request.i_skip = 0;
 825         pl_priv(p_playlist)->request.p_item = p_toplay;
 826         if( pl_priv(p_playlist)->p_input )
 827             input_Stop( pl_priv(p_playlist)->p_input, true );
 828         pl_priv(p_playlist)->request.i_status = PLAYLIST_RUNNING;
 829         vlc_cond_signal( &pl_priv(p_playlist)->signal );
 830     }
 831     /* Preparse if PREPARSE or SPREPARSE & not enough meta */
 832     char *psz_artist = input_item_GetArtist( p_item_cat->p_input );
 833     char *psz_album = input_item_GetAlbum( p_item_cat->p_input );
 834     if( pl_priv(p_playlist)->b_auto_preparse &&
 835           (i_mode & PLAYLIST_PREPARSE ||
 836           ( i_mode & PLAYLIST_SPREPARSE &&
 837             ( EMPTY_STR( psz_artist ) || ( EMPTY_STR( psz_album ) ) )
 838           ) ) )
 839         playlist_PreparseEnqueue( p_playlist, p_item_cat->p_input, pl_Locked );
 840     /* If we already have it, signal it */
 841     else if( !EMPTY_STR( psz_artist ) && !EMPTY_STR( psz_album ) )
 842         input_item_SetPreparsed( p_item_cat->p_input, true );
 843     free( psz_artist );
 844     free( psz_album );
 845 }
 846
 847 /* Add the playlist item to the requested node and fire a notification */
 848 static void AddItem( playlist_t *p_playlist, playlist_item_t *p_item,
 849                      playlist_item_t *p_node, int i_mode, int i_pos )
 850 {
 851     PL_ASSERT_LOCKED;
 852     ARRAY_APPEND(p_playlist->items, p_item);
 853     ARRAY_APPEND(p_playlist->all_items, p_item);
 854
 855     if( i_pos == PLAYLIST_END )
 856         playlist_NodeAppend( p_playlist, p_item, p_node );
 857     else
 858         playlist_NodeInsert( p_playlist, p_item, p_node, i_pos );
 859
 860     if( !pl_priv(p_playlist)->b_doing_ml )
 861         playlist_SendAddNotify( p_playlist, p_item->i_id, p_node->i_id,
 862                                  !( i_mode & PLAYLIST_NO_REBUILD ) );
 863 }
 864
 865 /* Actually convert an item to a node */
 866 static void ChangeToNode( playlist_t *p_playlist, playlist_item_t *p_item )
 867 {
 868     int i;
 869     if( p_item->i_children == -1 )
 870         p_item->i_children = 0;
 871
 872     /* Remove it from the array of available items */
 873     ARRAY_BSEARCH( p_playlist->items,->i_id, int, p_item->i_id, i );
 874     if( i != -1 )
 875         ARRAY_REMOVE( p_playlist->items, i );
 876 }
 877
 878 /* Do the actual removal */
 879 static int DeleteInner( playlist_t * p_playlist, playlist_item_t *p_item,
 880                         bool b_stop )
 881 {
 882     int i;
 883     int i_id = p_item->i_id;
 884     PL_ASSERT_LOCKED;
 885
 886     if( p_item->i_children > -1 )
 887     {
 888         return playlist_NodeDelete( p_playlist, p_item, true, false );
 889     }
 890     pl_priv(p_playlist)->b_reset_currently_playing = true;
 891     var_SetInteger( p_playlist, "playlist-item-deleted", i_id );
 892
 893     /* Remove the item from the bank */
 894     ARRAY_BSEARCH( p_playlist->all_items,->i_id, int, i_id, i );
 895     if( i != -1 )
 896         ARRAY_REMOVE( p_playlist->all_items, i );
 897
 898     ARRAY_BSEARCH( p_playlist->items,->i_id, int, i_id, i );
 899     if( i != -1 )
 900         ARRAY_REMOVE( p_playlist->items, i );
 901
 902     /* Check if it is the current item */
 903     if( get_current_status_item( p_playlist ) == p_item && b_stop )
 904     {
 905         playlist_Control( p_playlist, PLAYLIST_STOP, pl_Locked );
 906         msg_Info( p_playlist, "stopping playback" );
 907     }
 908
 909     PL_DEBUG( "deleting item `%s'", p_item->p_input->psz_name );
 910
 911     /* Remove the item from its parent */
 912     playlist_NodeRemoveItem( p_playlist, p_item, p_item->p_parent );
 913
 914     playlist_ItemRelease( p_item );
 915
 916     return VLC_SUCCESS;
 917 }