git.sesse.net Git - vlc/blob - src/playlist/item.c

   1 /*****************************************************************************
   2  * item.c : Playlist item creation/deletion/add/removal functions
   3  *****************************************************************************
   4  * Copyright (C) 1999-2007 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Samuel Hocevar <sam@zoy.org>
   8  *          Clément Stenac <zorglub@videolan.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24 #ifdef HAVE_CONFIG_H
  25 # include "config.h"
  26 #endif
  27
  28 #include <vlc_common.h>
  29 #include <assert.h>
  30 #include <vlc_playlist.h>
  31 #include "playlist_internal.h"
  32
  33 static void AddItem( playlist_t *p_playlist, playlist_item_t *p_item,
  34                      playlist_item_t *p_node, int i_mode, int i_pos );
  35 static void GoAndPreparse( playlist_t *p_playlist, int i_mode,
  36                            playlist_item_t *, playlist_item_t * );
  37 static void ChangeToNode( playlist_t *p_playlist, playlist_item_t *p_item );
  38 static int DeleteInner( playlist_t * p_playlist, playlist_item_t *p_item,
  39                         bool b_stop );
  40
  41 /*****************************************************************************
  42  * An input item has gained a subitem (Event Callback)
  43  *****************************************************************************/
  44 static void input_item_subitem_added( const vlc_event_t * p_event,
  45                                       void * user_data )
  46 {
  47     playlist_item_t *p_parent_playlist_item = user_data;
  48     playlist_t * p_playlist = p_parent_playlist_item->p_playlist;
  49     input_item_t * p_parent, * p_child;
  50     playlist_item_t * p_child_in_category;
  51     playlist_item_t * p_item_in_category;
  52     bool b_play;
  53
  54     p_parent = p_event->p_obj;
  55     p_child = p_event->u.input_item_subitem_added.p_new_child;
  56
  57     PL_LOCK;
  58     b_play = var_CreateGetBool( p_playlist, "playlist-autostart" );
  59
  60     /* This part is really hakish, but this playlist system isn't simple */
  61     /* First check if we haven't already added the item as we are
  62      * listening using the onelevel and the category representent
  63      * (Because of the playlist design) */
  64     p_child_in_category = playlist_ItemFindFromInputAndRoot(
  65                             p_playlist, p_child->i_id,
  66                             p_playlist->p_root_category,
  67                             false /* Only non-node */ );
  68
  69     if( !p_child_in_category )
  70     {
  71         /* Then, transform to a node if needed */
  72         p_item_in_category = playlist_ItemFindFromInputAndRoot(
  73                                 p_playlist, p_parent->i_id,
  74                                 p_playlist->p_root_category,
  75                                 false /* Only non-node */ );
  76         if( !p_item_in_category )
  77         {
  78             /* Item may have been removed */
  79             PL_UNLOCK;
  80             return;
  81         }
  82
  83         b_play = b_play && p_item_in_category == p_playlist->status.p_item;
  84
  85         /* If this item is already a node don't transform it */
  86         if( p_item_in_category->i_children == -1 )
  87         {
  88             p_item_in_category = playlist_ItemToNode( p_playlist,
  89                     p_item_in_category, true );
  90             p_item_in_category->p_input->i_type = ITEM_TYPE_PLAYLIST;
  91         }
  92
  93         int i_ret = playlist_BothAddInput( p_playlist, p_child,
  94                 p_item_in_category,
  95                 PLAYLIST_APPEND | PLAYLIST_SPREPARSE , PLAYLIST_END,
  96                 NULL, NULL,  true );
  97
  98         if( i_ret == VLC_SUCCESS && b_play )
  99         {
 100             playlist_Control( p_playlist, PLAYLIST_VIEWPLAY,
 101                           true, p_item_in_category, NULL );
 102         }
 103     }
 104
 105     PL_UNLOCK;
 106
 107 }
 108
 109 /*****************************************************************************
 110  * An input item's meta has changed (Event Callback)
 111  *****************************************************************************/
 112 static void input_item_meta_changed( const vlc_event_t * p_event,
 113                                       void * user_data )
 114 {
 115     playlist_item_t * p_item = user_data;
 116     var_SetInteger( p_item->p_playlist,
 117                     "item-change", p_item->i_id );
 118 }
 119
 120 /*****************************************************************************
 121  * Listen to vlc_InputItemAddSubItem event
 122  *****************************************************************************/
 123 static void install_input_item_observer( playlist_item_t * p_item )
 124 {
 125     vlc_event_attach( &p_item->p_input->event_manager,
 126                       vlc_InputItemSubItemAdded,
 127                       input_item_subitem_added,
 128                       p_item );
 129     vlc_event_attach( &p_item->p_input->event_manager,
 130                       vlc_InputItemMetaChanged,
 131                       input_item_meta_changed,
 132                       p_item );
 133 }
 134
 135 static void uninstall_input_item_observer( playlist_item_t * p_item )
 136 {
 137     vlc_event_detach( &p_item->p_input->event_manager,
 138                       vlc_InputItemMetaChanged,
 139                       input_item_meta_changed,
 140                       p_item );
 141     vlc_event_detach( &p_item->p_input->event_manager,
 142                       vlc_InputItemSubItemAdded,
 143                       input_item_subitem_added,
 144                       p_item );
 145 }
 146
 147 /*****************************************************************************
 148  * Playlist item creation
 149  *****************************************************************************/
 150 playlist_item_t * playlist_ItemNewWithType( vlc_object_t *p_obj,
 151                                             const char *psz_uri,
 152                                             const char *psz_name,
 153                                             int i_options,
 154                                             const char *const *ppsz_options,
 155                                             int i_duration, int i_type )
 156 {
 157     input_item_t *p_input;
 158     if( psz_uri == NULL ) return NULL;
 159     p_input = input_ItemNewWithType( p_obj, psz_uri,
 160                                      psz_name, i_options, ppsz_options,
 161                                      i_duration, i_type );
 162     return playlist_ItemNewFromInput( p_obj, p_input );
 163 }
 164
 165 playlist_item_t *__playlist_ItemNewFromInput( vlc_object_t *p_obj,
 166                                               input_item_t *p_input )
 167 {
 168     DECMALLOC_NULL( p_item, playlist_item_t );
 169     playlist_t *p_playlist = pl_Yield( p_obj );
 170
 171     p_item->p_input = p_input;
 172     vlc_gc_incref( p_item->p_input );
 173
 174     p_item->i_id = ++p_playlist->i_last_playlist_id;
 175
 176     p_item->p_parent = NULL;
 177     p_item->i_children = -1;
 178     p_item->pp_children = NULL;
 179     p_item->i_flags = 0;
 180     p_item->p_playlist = p_playlist;
 181
 182     install_input_item_observer( p_item );
 183
 184     pl_Release( p_item->p_playlist );
 185
 186     return p_item;
 187 }
 188
 189 /***************************************************************************
 190  * Playlist item destruction
 191  ***************************************************************************/
 192
 193 /**
 194  * Delete item
 195  *
 196  * Delete a playlist item and detach its input item
 197  * \param p_item item to delete
 198  * \return VLC_SUCCESS
 199 */
 200 int playlist_ItemDelete( playlist_item_t *p_item )
 201 {
 202     uninstall_input_item_observer( p_item );
 203
 204     vlc_gc_decref( p_item->p_input );
 205     free( p_item );
 206     return VLC_SUCCESS;
 207 }
 208
 209 /**
 210  * Delete input item
 211  *
 212  * Remove an input item when it appears from a root playlist item
 213  * \param p_playlist playlist object
 214  * \param i_input_id id of the input to delete
 215  * \param p_root root playlist item
 216  * \param b_do_stop must stop or not the playlist
 217  * \return VLC_SUCCESS or VLC_EGENERIC
 218 */
 219 static int DeleteFromInput( playlist_t *p_playlist, int i_input_id,
 220                             playlist_item_t *p_root, bool b_do_stop )
 221 {
 222     int i;
 223     for( i = 0 ; i< p_root->i_children ; i++ )
 224     {
 225         if( p_root->pp_children[i]->i_children == -1 &&
 226             p_root->pp_children[i]->p_input->i_id == i_input_id )
 227         {
 228             DeleteInner( p_playlist, p_root->pp_children[i], b_do_stop );
 229             return VLC_SUCCESS;
 230         }
 231         else if( p_root->pp_children[i]->i_children >= 0 )
 232         {
 233             int i_ret = DeleteFromInput( p_playlist, i_input_id,
 234                                          p_root->pp_children[i], b_do_stop );
 235             if( i_ret == VLC_SUCCESS ) return VLC_SUCCESS;
 236         }
 237     }
 238     return VLC_EGENERIC;
 239 }
 240
 241 /**
 242  * Delete input item
 243  *
 244  * Remove an input item when it appears from a root playlist item
 245  * \param p_playlist playlist object
 246  * \param i_input_id id of the input to delete
 247  * \param p_root root playlist item
 248  * \param b_locked TRUE if the playlist is locked
 249  * \return VLC_SUCCESS or VLC_EGENERIC
 250  */
 251 int playlist_DeleteInputInParent( playlist_t *p_playlist, int i_input_id,
 252                                   playlist_item_t *p_root, bool b_locked )
 253 {
 254     int i_ret;
 255     if( !b_locked ) PL_LOCK;
 256     i_ret = DeleteFromInput( p_playlist, i_input_id,
 257                              p_root, true );
 258     if( !b_locked ) PL_UNLOCK;
 259     return i_ret;
 260 }
 261
 262 /**
 263  * Delete from input
 264  *
 265  * Remove an input item from ONELEVEL and CATEGORY
 266  * \param p_playlist playlist object
 267  * \param i_input_id id of the input to delete
 268  * \param b_locked TRUE if the playlist is locked
 269  * \return VLC_SUCCESS or VLC_ENOITEM
 270  */
 271 int playlist_DeleteFromInput( playlist_t *p_playlist, int i_input_id,
 272                               bool b_locked )
 273 {
 274     int i_ret1, i_ret2;
 275     if( !b_locked ) PL_LOCK;
 276     i_ret1 = DeleteFromInput( p_playlist, i_input_id,
 277                              p_playlist->p_root_category, true );
 278     i_ret2 = DeleteFromInput( p_playlist, i_input_id,
 279                      p_playlist->p_root_onelevel, true );
 280     if( !b_locked ) PL_UNLOCK;
 281     return ( i_ret1 == VLC_SUCCESS || i_ret2 == VLC_SUCCESS ) ?
 282                             VLC_SUCCESS : VLC_ENOITEM;
 283 }
 284
 285 /**
 286  * Clear the playlist
 287  *
 288  * \param p_playlist playlist object
 289  * \param b_locked TRUE if the playlist is locked
 290  * \return nothing
 291  */
 292 void playlist_Clear( playlist_t * p_playlist, bool b_locked )
 293 {
 294     if( !b_locked ) PL_LOCK;
 295     playlist_NodeEmpty( p_playlist, p_playlist->p_local_category, true );
 296     playlist_NodeEmpty( p_playlist, p_playlist->p_local_onelevel, true );
 297     if( !b_locked ) PL_UNLOCK;
 298 }
 299
 300 /**
 301  * Delete playlist item
 302  *
 303  * Remove a playlist item from the playlist, given its id
 304  * This function is to be used only by the playlist
 305  * \param p_playlist playlist object
 306  * \param i_id id of the item do delete
 307  * \return VLC_SUCCESS or an error
 308  */
 309 int playlist_DeleteFromItemId( playlist_t *p_playlist, int i_id )
 310 {
 311     playlist_item_t *p_item = playlist_ItemGetById( p_playlist, i_id,
 312                                                     true );
 313     if( !p_item ) return VLC_EGENERIC;
 314     return DeleteInner( p_playlist, p_item, true );
 315 }
 316
 317 /***************************************************************************
 318  * Playlist item addition
 319  ***************************************************************************/
 320 /**
 321  * Playlist add
 322  *
 323  * Add an item to the playlist or the media library
 324  * \param p_playlist the playlist to add into
 325  * \param psz_uri the mrl to add to the playlist
 326  * \param psz_name a text giving a name or description of this item
 327  * \param i_mode the mode used when adding
 328  * \param i_pos the position in the playlist where to add. If this is
 329  *        PLAYLIST_END the item will be added at the end of the playlist
 330  *        regardless of its size
 331  * \param b_playlist TRUE for playlist, FALSE for media library
 332  * \param b_locked TRUE if the playlist is locked
 333  * \return The id of the playlist item
 334  */
 335 int playlist_Add( playlist_t *p_playlist, const char *psz_uri,
 336                   const char *psz_name, int i_mode, int i_pos,
 337                   bool b_playlist, bool b_locked )
 338 {
 339     return playlist_AddExt( p_playlist, psz_uri, psz_name,
 340                             i_mode, i_pos, -1, NULL, 0, b_playlist, b_locked );
 341 }
 342
 343 /**
 344  * Add a MRL into the playlist or the media library, duration and options given
 345  *
 346  * \param p_playlist the playlist to add into
 347  * \param psz_uri the mrl to add to the playlist
 348  * \param psz_name a text giving a name or description of this item
 349  * \param i_mode the mode used when adding
 350  * \param i_pos the position in the playlist where to add. If this is
 351  *        PLAYLIST_END the item will be added at the end of the playlist
 352  *        regardless of its size
 353  * \param i_duration length of the item in milliseconds.
 354  * \param ppsz_options an array of options
 355  * \param i_options the number of options
 356  * \param b_playlist TRUE for playlist, FALSE for media library
 357  * \param b_locked TRUE if the playlist is locked
 358  * \return The id of the playlist item
 359 */
 360 int playlist_AddExt( playlist_t *p_playlist, const char * psz_uri,
 361                      const char *psz_name, int i_mode, int i_pos,
 362                      mtime_t i_duration, const char *const *ppsz_options,
 363                      int i_options, bool b_playlist, bool b_locked )
 364 {
 365     int i_ret;
 366     input_item_t *p_input = input_ItemNewExt( p_playlist, psz_uri, psz_name,
 367                                               i_options, ppsz_options,
 368                                               i_duration );
 369
 370     i_ret = playlist_AddInput( p_playlist, p_input, i_mode, i_pos, b_playlist,
 371                                b_locked );
 372     int i_id = i_ret == VLC_SUCCESS ? p_input->i_id : -1;
 373
 374     vlc_gc_decref( p_input );
 375
 376     return i_id;
 377 }
 378
 379 /**
 380  * Add an input item to the playlist node
 381  *
 382  * \param p_playlist the playlist to add into
 383  * \param p_input the input item to add
 384  * \param i_mode the mode used when adding
 385  * \param i_pos the position in the playlist where to add. If this is
 386  *        PLAYLIST_END the item will be added at the end of the playlist
 387  *        regardless of its size
 388  * \param b_playlist TRUE for playlist, FALSE for media library
 389  * \param b_locked TRUE if the playlist is locked
 390  * \return VLC_SUCCESS or VLC_ENOMEM or VLC_EGENERIC
 391 */
 392 int playlist_AddInput( playlist_t* p_playlist, input_item_t *p_input,
 393                        int i_mode, int i_pos, bool b_playlist,
 394                        bool b_locked )
 395 {
 396     playlist_item_t *p_item_cat, *p_item_one;
 397     if( p_playlist->b_die ) return VLC_EGENERIC;
 398     if( !p_playlist->b_doing_ml )
 399         PL_DEBUG( "adding item `%s' ( %s )", p_input->psz_name,
 400                                              p_input->psz_uri );
 401
 402     if( !b_locked ) PL_LOCK;
 403
 404     /* Add to ONELEVEL */
 405     p_item_one = playlist_ItemNewFromInput( p_playlist, p_input );
 406     if( p_item_one == NULL ) return VLC_ENOMEM;
 407     AddItem( p_playlist, p_item_one,
 408              b_playlist ? p_playlist->p_local_onelevel :
 409                           p_playlist->p_ml_onelevel , i_mode, i_pos );
 410
 411     /* Add to CATEGORY */
 412     p_item_cat = playlist_ItemNewFromInput( p_playlist, p_input );
 413     if( p_item_cat == NULL ) return VLC_ENOMEM;
 414     AddItem( p_playlist, p_item_cat,
 415              b_playlist ? p_playlist->p_local_category :
 416                           p_playlist->p_ml_category , i_mode, i_pos );
 417
 418     GoAndPreparse( p_playlist, i_mode, p_item_cat, p_item_one );
 419
 420     if( !b_locked ) PL_UNLOCK;
 421     return VLC_SUCCESS;
 422 }
 423
 424 /**
 425  * Add input
 426  *
 427  * Add an input item to p_direct_parent in the category tree, and to the
 428  * matching top category in onelevel
 429  * \param p_playlist the playlist to add into
 430  * \param p_input the input item to add
 431  * \param p_direct_parent the parent item to add into
 432  * \param i_mode the mode used when adding
 433  * \param i_pos the position in the playlist where to add. If this is
 434  *        PLAYLIST_END the item will be added at the end of the playlist
 435  *        regardless of its size
 436  * \param i_cat id of the items category
 437  * \param i_one id of the item onelevel category
 438  * \param b_locked TRUE if the playlist is locked
 439  * \return VLC_SUCCESS if success, VLC_EGENERIC if fail, VLC_ENOMEM if OOM
 440  */
 441 int playlist_BothAddInput( playlist_t *p_playlist,
 442                            input_item_t *p_input,
 443                            playlist_item_t *p_direct_parent,
 444                            int i_mode, int i_pos,
 445                            int *i_cat, int *i_one, bool b_locked )
 446 {
 447     playlist_item_t *p_item_cat, *p_item_one, *p_up;
 448     int i_top;
 449     assert( p_input );
 450     if( p_playlist->b_die ) return VLC_EGENERIC;
 451     if( !b_locked ) PL_LOCK;
 452
 453     /* Add to category */
 454     p_item_cat = playlist_ItemNewFromInput( p_playlist, p_input );
 455     if( p_item_cat == NULL ) return VLC_ENOMEM;
 456     AddItem( p_playlist, p_item_cat, p_direct_parent, i_mode, i_pos );
 457
 458     /* Add to onelevel */
 459     /** \todo make a faster case for ml import */
 460     p_item_one = playlist_ItemNewFromInput( p_playlist, p_input );
 461     if( p_item_one == NULL ) return VLC_ENOMEM;
 462
 463     p_up = p_direct_parent;
 464     while( p_up->p_parent != p_playlist->p_root_category )
 465     {
 466         p_up = p_up->p_parent;
 467     }
 468     for( i_top = 0 ; i_top < p_playlist->p_root_onelevel->i_children; i_top++ )
 469     {
 470         if( p_playlist->p_root_onelevel->pp_children[i_top]->p_input->i_id ==
 471                              p_up->p_input->i_id )
 472         {
 473             AddItem( p_playlist, p_item_one,
 474                      p_playlist->p_root_onelevel->pp_children[i_top],
 475                      i_mode, i_pos );
 476             break;
 477         }
 478     }
 479     GoAndPreparse( p_playlist, i_mode, p_item_cat, p_item_one );
 480
 481     if( i_cat ) *i_cat = p_item_cat->i_id;
 482     if( i_one ) *i_one = p_item_one->i_id;
 483
 484     if( !b_locked ) PL_UNLOCK;
 485     return VLC_SUCCESS;
 486 }
 487
 488 /**
 489  * Add an input item to a given node
 490  *
 491  * \param p_playlist the playlist to add into
 492  * \param p_input the input item to add
 493  * \param p_parent the parent item to add into
 494  * \param i_mode the mode used when addin
 495  * \param i_pos the position in the playlist where to add. If this is
 496  *        PLAYLIST_END the item will be added at the end of the playlist
 497  *        regardless of its size
 498  * \param b_locked TRUE if the playlist is locked
 499  * \return the new playlist item
 500  */
 501 playlist_item_t * playlist_NodeAddInput( playlist_t *p_playlist,
 502                                          input_item_t *p_input,
 503                                          playlist_item_t *p_parent,
 504                                          int i_mode, int i_pos,
 505                                          bool b_locked )
 506 {
 507     playlist_item_t *p_item;
 508     assert( p_input );
 509     assert( p_parent && p_parent->i_children != -1 );
 510
 511     if( p_playlist->b_die )
 512         return NULL;
 513     if( !b_locked ) PL_LOCK;
 514
 515     p_item = playlist_ItemNewFromInput( p_playlist, p_input );
 516     if( p_item == NULL ) return NULL;
 517     AddItem( p_playlist, p_item, p_parent, i_mode, i_pos );
 518
 519     if( !b_locked ) PL_UNLOCK;
 520
 521     return p_item;
 522 }
 523
 524 /*****************************************************************************
 525  * Playlist item misc operations
 526  *****************************************************************************/
 527
 528 /**
 529  * Item to node
 530  *
 531  * Transform an item to a node. Return the node in the category tree, or NULL
 532  * if not found there
 533  * This function must be entered without the playlist lock
 534  * \param p_playlist the playlist object
 535  * \param p_item the item to transform
 536  * \param b_locked TRUE if the playlist is locked
 537  * \return the item transform in a node
 538  */
 539 playlist_item_t *playlist_ItemToNode( playlist_t *p_playlist,
 540                                       playlist_item_t *p_item,
 541                                       bool b_locked )
 542 {
 543
 544     playlist_item_t *p_item_in_category;
 545     /* What we do
 546      * Find the input in CATEGORY.
 547      *  - If we find it
 548      *    - change it to node
 549      *    - we'll return it at the end
 550      *    - If we are a direct child of onelevel root, change to node, else
 551      *      delete the input from ONELEVEL
 552      *  - If we don't find it, just change to node (we are probably in VLM)
 553      *    and return NULL
 554      *
 555      * If we were in ONELEVEL, we thus retrieve the node in CATEGORY (will be
 556      * useful for later BothAddInput )
 557      */
 558
 559     if( !b_locked ) PL_LOCK;
 560
 561     /* Fast track the media library, no time to loose */
 562     if( p_item == p_playlist->p_ml_category ) {
 563         if( !b_locked ) PL_UNLOCK;
 564         return p_item;
 565     }
 566
 567     /** \todo First look if we don't already have it */
 568     p_item_in_category = playlist_ItemFindFromInputAndRoot(
 569                                             p_playlist, p_item->p_input->i_id,
 570                                             p_playlist->p_root_category,
 571                                             true );
 572
 573     if( p_item_in_category )
 574     {
 575         playlist_item_t *p_item_in_one = playlist_ItemFindFromInputAndRoot(
 576                                             p_playlist, p_item->p_input->i_id,
 577                                             p_playlist->p_root_onelevel,
 578                                             true );
 579         assert( p_item_in_one );
 580
 581         /* We already have it, and there is nothing more to do */
 582         ChangeToNode( p_playlist, p_item_in_category );
 583
 584         /* Item in one is a root, change it to node */
 585         if( p_item_in_one->p_parent == p_playlist->p_root_onelevel )
 586             ChangeToNode( p_playlist, p_item_in_one );
 587         else
 588         {
 589             DeleteFromInput( p_playlist, p_item_in_one->p_input->i_id,
 590                              p_playlist->p_root_onelevel, false );
 591         }
 592         p_playlist->b_reset_currently_playing = true;
 593         vlc_cond_signal( &p_playlist->object_wait );
 594         var_SetInteger( p_playlist, "item-change", p_item_in_category->
 595                                                         p_input->i_id );
 596         if( !b_locked ) PL_UNLOCK;
 597         return p_item_in_category;
 598     }
 599     else
 600     {
 601         ChangeToNode( p_playlist, p_item );
 602         if( !b_locked ) PL_UNLOCK;
 603         return NULL;
 604     }
 605 }
 606
 607 /**
 608  * Find an item within a root, given its input id.
 609  *
 610  * \param p_playlist the playlist object
 611  * \param i_input_id id of the input
 612  * \param p_root root playlist item
 613  * \param b_items_only TRUE if we want the item himself
 614  * \return the first found item, or NULL if not found
 615  */
 616 playlist_item_t *playlist_ItemFindFromInputAndRoot( playlist_t *p_playlist,
 617                                                     int i_input_id,
 618                                                     playlist_item_t *p_root,
 619                                                     bool b_items_only )
 620 {
 621     int i;
 622     for( i = 0 ; i< p_root->i_children ; i++ )
 623     {
 624         if( ( b_items_only ? p_root->pp_children[i]->i_children == -1 : 1 ) &&
 625             p_root->pp_children[i]->p_input->i_id == i_input_id )
 626         {
 627             return p_root->pp_children[i];
 628         }
 629         else if( p_root->pp_children[i]->i_children >= 0 )
 630         {
 631             playlist_item_t *p_search =
 632                  playlist_ItemFindFromInputAndRoot( p_playlist, i_input_id,
 633                                                     p_root->pp_children[i],
 634                                                     b_items_only );
 635             if( p_search ) return p_search;
 636         }
 637     }
 638     return NULL;
 639 }
 640
 641
 642 static int TreeMove( playlist_t *p_playlist, playlist_item_t *p_item,
 643                      playlist_item_t *p_node, int i_newpos )
 644 {
 645     int j;
 646     playlist_item_t *p_detach = p_item->p_parent;
 647     (void)p_playlist;
 648
 649     if( p_node->i_children == -1 ) return VLC_EGENERIC;
 650
 651     for( j = 0; j < p_detach->i_children; j++ )
 652     {
 653          if( p_detach->pp_children[j] == p_item ) break;
 654     }
 655     REMOVE_ELEM( p_detach->pp_children, p_detach->i_children, j );
 656
 657     /* Attach to new parent */
 658     INSERT_ELEM( p_node->pp_children, p_node->i_children, i_newpos, p_item );
 659     p_item->p_parent = p_node;
 660
 661     return VLC_SUCCESS;
 662 }
 663
 664 /**
 665  * Moves an item
 666  *
 667  * This function must be entered with the playlist lock
 668  *
 669  * \param p_playlist the playlist
 670  * \param p_item the item to move
 671  * \param p_node the new parent of the item
 672  * \param i_newpos the new position under this new parent
 673  * \return VLC_SUCCESS or an error
 674  */
 675 int playlist_TreeMove( playlist_t * p_playlist, playlist_item_t *p_item,
 676                        playlist_item_t *p_node, int i_newpos )
 677 {
 678     int i_ret;
 679     /* Drop on a top level node. Move in the two trees */
 680     if( p_node->p_parent == p_playlist->p_root_category ||
 681         p_node->p_parent == p_playlist->p_root_onelevel )
 682     {
 683         /* Fixme: avoid useless lookups but we need some clean helpers */
 684         {
 685             /* Fixme: if we try to move a node on a top-level node, it will
 686              * fail because the node doesn't exist in onelevel and we will
 687              * do some shit in onelevel. We should recursively move all items
 688              * within the node */
 689             playlist_item_t *p_node_onelevel;
 690             playlist_item_t *p_item_onelevel;
 691             p_node_onelevel = playlist_ItemFindFromInputAndRoot( p_playlist,
 692                                                 p_node->p_input->i_id,
 693                                                 p_playlist->p_root_onelevel,
 694                                                 false );
 695             p_item_onelevel = playlist_ItemFindFromInputAndRoot( p_playlist,
 696                                                 p_item->p_input->i_id,
 697                                                 p_playlist->p_root_onelevel,
 698                                                 false );
 699             if( p_node_onelevel && p_item_onelevel )
 700                 TreeMove( p_playlist, p_item_onelevel, p_node_onelevel, 0 );
 701         }
 702         {
 703             playlist_item_t *p_node_category;
 704             playlist_item_t *p_item_category;
 705             p_node_category = playlist_ItemFindFromInputAndRoot( p_playlist,
 706                                                 p_node->p_input->i_id,
 707                                                 p_playlist->p_root_category,
 708                                                 false );
 709             p_item_category = playlist_ItemFindFromInputAndRoot( p_playlist,
 710                                                 p_item->p_input->i_id,
 711                                                 p_playlist->p_root_category,
 712                                                 false );
 713             if( p_node_category && p_item_category )
 714                 TreeMove( p_playlist, p_item_category, p_node_category, 0 );
 715         }
 716         i_ret = VLC_SUCCESS;
 717     }
 718     else
 719         i_ret = TreeMove( p_playlist, p_item, p_node, i_newpos );
 720     p_playlist->b_reset_currently_playing = true;
 721     vlc_cond_signal( &p_playlist->object_wait );
 722     return i_ret;
 723 }
 724
 725 /**
 726  * Send a notification that an item has been added to a node
 727  *
 728  * \param p_playlist the playlist object
 729  * \param i_item_id id of the item added
 730  * \param i_node_id id of the node in wich the item was added
 731  * \param b_signal TRUE if the function must send a signal
 732  * \return nothing
 733  */
 734 void playlist_SendAddNotify( playlist_t *p_playlist, int i_item_id,
 735                              int i_node_id, bool b_signal )
 736 {
 737     vlc_value_t val;
 738     playlist_add_t *p_add = (playlist_add_t *)malloc( sizeof( playlist_add_t) );
 739     if( !p_add )
 740         return;
 741
 742     p_add->i_item = i_item_id;
 743     p_add->i_node = i_node_id;
 744     val.p_address = p_add;
 745     p_playlist->b_reset_currently_playing = true;
 746     if( b_signal )
 747         vlc_cond_signal( &p_playlist->object_wait );
 748     var_Set( p_playlist, "item-append", val );
 749     free( p_add );
 750 }
 751
 752 /*****************************************************************************
 753  * Playlist item accessors
 754  *****************************************************************************/
 755
 756 /**
 757  * Set the name of a playlist item
 758  *
 759  * \param p_item the item
 760  * \param psz_name the name
 761  * \return VLC_SUCCESS or VLC_EGENERIC
 762  */
 763 int playlist_ItemSetName( playlist_item_t *p_item, const char *psz_name )
 764 {
 765     if( psz_name && p_item )
 766     {
 767         input_item_SetName( p_item->p_input, psz_name );
 768         return VLC_SUCCESS;
 769     }
 770     return VLC_EGENERIC;
 771 }
 772
 773 /***************************************************************************
 774  * The following functions are local
 775  ***************************************************************************/
 776
 777 /* Enqueue an item for preparsing, and play it, if needed */
 778 static void GoAndPreparse( playlist_t *p_playlist, int i_mode,
 779                            playlist_item_t *p_item_cat,
 780                            playlist_item_t *p_item_one )
 781 {
 782     if( (i_mode & PLAYLIST_GO ) )
 783     {
 784         playlist_item_t *p_parent = p_item_one;
 785         playlist_item_t *p_toplay = NULL;
 786         while( p_parent )
 787         {
 788             if( p_parent == p_playlist->p_root_category )
 789             {
 790                 p_toplay = p_item_cat; break;
 791             }
 792             else if( p_parent == p_playlist->p_root_onelevel )
 793             {
 794                 p_toplay = p_item_one; break;
 795             }
 796             p_parent = p_parent->p_parent;
 797         }
 798         assert( p_toplay );
 799         p_playlist->request.b_request = true;
 800         p_playlist->request.i_skip = 0;
 801         p_playlist->request.p_item = p_toplay;
 802         if( p_playlist->p_input )
 803             input_StopThread( p_playlist->p_input );
 804         p_playlist->request.i_status = PLAYLIST_RUNNING;
 805         vlc_cond_signal( &p_playlist->object_wait );
 806     }
 807     /* Preparse if PREPARSE or SPREPARSE & not enough meta */
 808     char *psz_artist = input_item_GetArtist( p_item_cat->p_input );
 809     char *psz_album = input_item_GetAlbum( p_item_cat->p_input );
 810     if( p_playlist->b_auto_preparse &&
 811           (i_mode & PLAYLIST_PREPARSE ||
 812           ( i_mode & PLAYLIST_SPREPARSE &&
 813             ( EMPTY_STR( psz_artist ) || ( EMPTY_STR( psz_album ) ) )
 814           ) ) )
 815         playlist_PreparseEnqueue( p_playlist, p_item_cat->p_input );
 816     /* If we already have it, signal it */
 817     else if( !EMPTY_STR( psz_artist ) && !EMPTY_STR( psz_album ) )
 818         input_item_SetPreparsed( p_item_cat->p_input, true );
 819     free( psz_artist );
 820     free( psz_album );
 821 }
 822
 823 /* Add the playlist item to the requested node and fire a notification */
 824 static void AddItem( playlist_t *p_playlist, playlist_item_t *p_item,
 825                      playlist_item_t *p_node, int i_mode, int i_pos )
 826 {
 827     ARRAY_APPEND(p_playlist->items, p_item);
 828     ARRAY_APPEND(p_playlist->all_items, p_item);
 829
 830     if( i_pos == PLAYLIST_END )
 831         playlist_NodeAppend( p_playlist, p_item, p_node );
 832     else
 833         playlist_NodeInsert( p_playlist, p_item, p_node, i_pos );
 834
 835     if( !p_playlist->b_doing_ml )
 836         playlist_SendAddNotify( p_playlist, p_item->i_id, p_node->i_id,
 837                                  !( i_mode & PLAYLIST_NO_REBUILD ) );
 838 }
 839
 840 /* Actually convert an item to a node */
 841 static void ChangeToNode( playlist_t *p_playlist, playlist_item_t *p_item )
 842 {
 843     int i;
 844     if( p_item->i_children == -1 )
 845         p_item->i_children = 0;
 846
 847     /* Remove it from the array of available items */
 848     ARRAY_BSEARCH( p_playlist->items,->i_id, int, p_item->i_id, i );
 849     if( i != -1 )
 850         ARRAY_REMOVE( p_playlist->items, i );
 851 }
 852
 853 /* Do the actual removal */
 854 static int DeleteInner( playlist_t * p_playlist, playlist_item_t *p_item,
 855                         bool b_stop )
 856 {
 857     int i;
 858     int i_id = p_item->i_id;
 859     bool b_delay_deletion = false;
 860
 861     if( p_item->i_children > -1 )
 862     {
 863         return playlist_NodeDelete( p_playlist, p_item, true, false );
 864     }
 865     p_playlist->b_reset_currently_playing = true;
 866     var_SetInteger( p_playlist, "item-deleted", i_id );
 867
 868     /* Remove the item from the bank */
 869     ARRAY_BSEARCH( p_playlist->all_items,->i_id, int, i_id, i );
 870     if( i != -1 )
 871         ARRAY_REMOVE( p_playlist->all_items, i );
 872
 873     ARRAY_BSEARCH( p_playlist->items,->i_id, int, i_id, i );
 874     if( i != -1 )
 875         ARRAY_REMOVE( p_playlist->items, i );
 876
 877     /* Check if it is the current item */
 878     if( p_playlist->status.p_item == p_item )
 879     {
 880         /* Hack we don't call playlist_Control for lock reasons */
 881         if( b_stop )
 882         {
 883             p_playlist->request.i_status = PLAYLIST_STOPPED;
 884             p_playlist->request.b_request = true;
 885             p_playlist->request.p_item = NULL;
 886             msg_Info( p_playlist, "stopping playback" );
 887             vlc_cond_signal( &p_playlist->object_wait );
 888         }
 889         b_delay_deletion = true;
 890     }
 891
 892     PL_DEBUG( "deleting item `%s'", p_item->p_input->psz_name );
 893
 894     /* Remove the item from its parent */
 895     playlist_NodeRemoveItem( p_playlist, p_item, p_item->p_parent );
 896
 897     if( !b_delay_deletion )
 898         playlist_ItemDelete( p_item );
 899     else
 900     {
 901         PL_DEBUG( "marking %s for further deletion", PLI_NAME( p_item ) );
 902         p_item->i_flags |= PLAYLIST_REMOVE_FLAG;
 903     }
 904
 905     return VLC_SUCCESS;
 906 }