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

   1 /*****************************************************************************
   2  * item.c : Playlist item creation/deletion/add/removal functions
   3  *****************************************************************************
   4  * Copyright (C) 1999-2007 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Samuel Hocevar <sam@zoy.org>
   8  *          Clément Stenac <zorglub@videolan.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24 #ifdef HAVE_CONFIG_H
  25 # include "config.h"
  26 #endif
  27
  28 #include <vlc_common.h>
  29 #include <assert.h>
  30 #include <vlc_playlist.h>
  31 #include "playlist_internal.h"
  32
  33 static void AddItem( playlist_t *p_playlist, playlist_item_t *p_item,
  34                      playlist_item_t *p_node, int i_mode, int i_pos );
  35 static void GoAndPreparse( playlist_t *p_playlist, int i_mode,
  36                            playlist_item_t *, playlist_item_t * );
  37 static void ChangeToNode( playlist_t *p_playlist, playlist_item_t *p_item );
  38 static int DeleteInner( playlist_t * p_playlist, playlist_item_t *p_item,
  39                         bool b_stop );
  40
  41 /*****************************************************************************
  42  * An input item has gained a subitem (Event Callback)
  43  *****************************************************************************/
  44 static void input_item_subitem_added( const vlc_event_t * p_event,
  45                                       void * user_data )
  46 {
  47     playlist_item_t *p_parent_playlist_item = user_data;
  48     playlist_t * p_playlist = p_parent_playlist_item->p_playlist;
  49     input_item_t * p_parent, * p_child;
  50     playlist_item_t * p_child_in_category;
  51     playlist_item_t * p_item_in_category;
  52     bool b_play;
  53
  54     p_parent = p_event->p_obj;
  55     p_child = p_event->u.input_item_subitem_added.p_new_child;
  56
  57     PL_LOCK;
  58     b_play = var_CreateGetBool( p_playlist, "playlist-autostart" );
  59
  60     /* This part is really hakish, but this playlist system isn't simple */
  61     /* First check if we haven't already added the item as we are
  62      * listening using the onelevel and the category representent
  63      * (Because of the playlist design) */
  64     p_child_in_category = playlist_ItemFindFromInputAndRoot(
  65                             p_playlist, p_child->i_id,
  66                             p_playlist->p_root_category,
  67                             false /* Only non-node */ );
  68
  69     if( !p_child_in_category )
  70     {
  71         /* Then, transform to a node if needed */
  72         p_item_in_category = playlist_ItemFindFromInputAndRoot(
  73                                 p_playlist, p_parent->i_id,
  74                                 p_playlist->p_root_category,
  75                                 false /* Only non-node */ );
  76         if( !p_item_in_category )
  77         {
  78             /* Item may have been removed */
  79             PL_UNLOCK;
  80             return;
  81         }
  82
  83         b_play = b_play &&
  84             p_item_in_category == get_current_status_item( p_playlist );
  85
  86         /* If this item is already a node don't transform it */
  87         if( p_item_in_category->i_children == -1 )
  88         {
  89             p_item_in_category = playlist_ItemToNode( p_playlist,
  90                     p_item_in_category, pl_Locked );
  91             p_item_in_category->p_input->i_type = ITEM_TYPE_PLAYLIST;
  92         }
  93
  94         int i_ret = playlist_BothAddInput( p_playlist, p_child,
  95                 p_item_in_category,
  96                 PLAYLIST_APPEND | PLAYLIST_SPREPARSE , PLAYLIST_END,
  97                 NULL, NULL, pl_Locked );
  98
  99         if( i_ret == VLC_SUCCESS && b_play )
 100         {
 101             playlist_Control( p_playlist, PLAYLIST_VIEWPLAY,
 102                           pl_Locked, p_item_in_category, NULL );
 103         }
 104     }
 105
 106     PL_UNLOCK;
 107
 108 }
 109
 110 /*****************************************************************************
 111  * An input item's meta or duration has changed (Event Callback)
 112  *****************************************************************************/
 113 static void input_item_changed( const vlc_event_t * p_event,
 114                                 void * user_data )
 115 {
 116     (void)p_event;
 117     playlist_item_t * p_item = user_data;
 118     var_SetInteger( p_item->p_playlist, "item-change", p_item->i_id );
 119 }
 120
 121 /*****************************************************************************
 122  * Listen to vlc_InputItemAddSubItem event
 123  *****************************************************************************/
 124 static void install_input_item_observer( playlist_item_t * p_item )
 125 {
 126     vlc_event_manager_t * p_em = &p_item->p_input->event_manager;
 127     vlc_event_attach( p_em, vlc_InputItemSubItemAdded,
 128                       input_item_subitem_added, p_item );
 129     vlc_event_attach( p_em, vlc_InputItemDurationChanged,
 130                       input_item_changed, p_item );
 131     vlc_event_attach( p_em, vlc_InputItemMetaChanged,
 132                       input_item_changed, p_item );
 133     vlc_event_attach( p_em, vlc_InputItemNameChanged,
 134                       input_item_changed, p_item );
 135     vlc_event_attach( p_em, vlc_InputItemInfoChanged,
 136                       input_item_changed, p_item );
 137 }
 138
 139 static void uninstall_input_item_observer( playlist_item_t * p_item )
 140 {
 141     vlc_event_manager_t * p_em = &p_item->p_input->event_manager;
 142     vlc_event_detach( p_em, vlc_InputItemSubItemAdded,
 143                       input_item_subitem_added, p_item );
 144     vlc_event_detach( p_em, vlc_InputItemMetaChanged,
 145                       input_item_changed, p_item );
 146     vlc_event_detach( p_em, vlc_InputItemDurationChanged,
 147                       input_item_changed, p_item );
 148     vlc_event_detach( p_em, vlc_InputItemNameChanged,
 149                       input_item_changed, p_item );
 150     vlc_event_detach( p_em, vlc_InputItemInfoChanged,
 151                       input_item_changed, p_item );
 152 }
 153
 154 /*****************************************************************************
 155  * Playlist item creation
 156  *****************************************************************************/
 157 playlist_item_t *playlist_ItemNewFromInput( playlist_t *p_playlist,
 158                                               input_item_t *p_input )
 159 {
 160     DECMALLOC_NULL( p_item, playlist_item_t );
 161
 162     p_item->p_input = p_input;
 163     vlc_gc_incref( p_item->p_input );
 164
 165     p_item->i_id = ++p_playlist->i_last_playlist_id;
 166
 167     p_item->p_parent = NULL;
 168     p_item->i_children = -1;
 169     p_item->pp_children = NULL;
 170     p_item->i_flags = 0;
 171     p_item->p_playlist = p_playlist;
 172
 173     install_input_item_observer( p_item );
 174
 175     return p_item;
 176 }
 177
 178 playlist_item_t * playlist_ItemNewWithType( playlist_t *p_playlist,
 179                                             const char *psz_uri,
 180                                             const char *psz_name,
 181                                             int i_options,
 182                                             const char *const *ppsz_options,
 183                                             int i_duration, int i_type )
 184 {
 185     input_item_t *p_input;
 186     if( psz_uri == NULL ) return NULL;
 187     p_input = input_ItemNewWithType( VLC_OBJECT(p_playlist), psz_uri,
 188                                      psz_name, i_options, ppsz_options,
 189                                      i_duration, i_type );
 190     return playlist_ItemNewFromInput( p_playlist, p_input );
 191 }
 192
 193 /***************************************************************************
 194  * Playlist item destruction
 195  ***************************************************************************/
 196
 197 /**
 198  * Release an item
 199  *
 200  * \param p_item item to delete
 201  * \return VLC_SUCCESS
 202 */
 203 int playlist_ItemRelease( playlist_item_t *p_item )
 204 {
 205     /* Surprise, we can't actually do more because we
 206      * don't do refcounting, or eauivalent.
 207      * Because item are not only accessed by their id
 208      * using playlist_item outside the PL_LOCK isn't safe.
 209      * Most of the modules does that.
 210      *
 211      * Who wants to add proper memory management? */
 212     ARRAY_APPEND( p_item->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 i_input_id id of 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, int i_input_id,
 227                             playlist_item_t *p_root, bool b_do_stop )
 228 {
 229     int i;
 230     for( i = 0 ; i< p_root->i_children ; i++ )
 231     {
 232         if( p_root->pp_children[i]->i_children == -1 &&
 233             p_root->pp_children[i]->p_input->i_id == i_input_id )
 234         {
 235             DeleteInner( p_playlist, p_root->pp_children[i], b_do_stop );
 236             return VLC_SUCCESS;
 237         }
 238         else if( p_root->pp_children[i]->i_children >= 0 )
 239         {
 240             int i_ret = DeleteFromInput( p_playlist, i_input_id,
 241                                          p_root->pp_children[i], b_do_stop );
 242             if( i_ret == VLC_SUCCESS ) return VLC_SUCCESS;
 243         }
 244     }
 245     return VLC_EGENERIC;
 246 }
 247
 248 /**
 249  * Delete input item
 250  *
 251  * Remove an input item when it appears from a root playlist item
 252  * \param p_playlist playlist object
 253  * \param i_input_id id of the input to delete
 254  * \param p_root root playlist item
 255  * \param b_locked TRUE if the playlist is locked
 256  * \return VLC_SUCCESS or VLC_EGENERIC
 257  */
 258 int playlist_DeleteFromInputInParent( playlist_t *p_playlist, int i_input_id,
 259                                       playlist_item_t *p_root, bool b_locked )
 260 {
 261     int i_ret;
 262     PL_LOCK_IF( !b_locked );
 263     i_ret = DeleteFromInput( p_playlist, i_input_id,
 264                              p_root, true );
 265     PL_UNLOCK_IF( !b_locked );
 266     return i_ret;
 267 }
 268
 269 /**
 270  * Delete from input
 271  *
 272  * Remove an input item from ONELEVEL and CATEGORY
 273  * \param p_playlist playlist object
 274  * \param i_input_id id of the input to delete
 275  * \param b_locked TRUE if the playlist is locked
 276  * \return VLC_SUCCESS or VLC_ENOITEM
 277  */
 278 int playlist_DeleteFromInput( playlist_t *p_playlist, int i_input_id,
 279                               bool b_locked )
 280 {
 281     int i_ret1, i_ret2;
 282     PL_LOCK_IF( !b_locked );
 283     i_ret1 = DeleteFromInput( p_playlist, i_input_id,
 284                              p_playlist->p_root_category, true );
 285     i_ret2 = DeleteFromInput( p_playlist, i_input_id,
 286                      p_playlist->p_root_onelevel, true );
 287     PL_UNLOCK_IF( !b_locked );
 288     return ( i_ret1 == VLC_SUCCESS || i_ret2 == VLC_SUCCESS ) ?
 289                             VLC_SUCCESS : VLC_ENOITEM;
 290 }
 291
 292 /**
 293  * Clear the playlist
 294  *
 295  * \param p_playlist playlist object
 296  * \param b_locked TRUE if the playlist is locked
 297  * \return nothing
 298  */
 299 void playlist_Clear( playlist_t * p_playlist, bool b_locked )
 300 {
 301     PL_LOCK_IF( !b_locked );
 302     playlist_NodeEmpty( p_playlist, p_playlist->p_local_category, true );
 303     playlist_NodeEmpty( p_playlist, p_playlist->p_local_onelevel, true );
 304     PL_UNLOCK_IF( !b_locked );
 305 }
 306
 307 /**
 308  * Delete playlist item
 309  *
 310  * Remove a playlist item from the playlist, given its id
 311  * This function is to be used only by the playlist
 312  * \param p_playlist playlist object
 313  * \param i_id id of the item do delete
 314  * \return VLC_SUCCESS or an error
 315  */
 316 int playlist_DeleteFromItemId( playlist_t *p_playlist, int i_id )
 317 {
 318     playlist_item_t *p_item = playlist_ItemGetById( p_playlist, i_id,
 319                                                     pl_Locked );
 320     if( !p_item ) return VLC_EGENERIC;
 321     return DeleteInner( p_playlist, p_item, true );
 322 }
 323
 324 /***************************************************************************
 325  * Playlist item addition
 326  ***************************************************************************/
 327 /**
 328  * Playlist add
 329  *
 330  * Add an item to the playlist or the media library
 331  * \param p_playlist the playlist to add into
 332  * \param psz_uri the mrl to add to the playlist
 333  * \param psz_name a text giving a name or description of this item
 334  * \param i_mode the mode used when adding
 335  * \param i_pos the position in the playlist where to add. If this is
 336  *        PLAYLIST_END the item will be added at the end of the playlist
 337  *        regardless of its size
 338  * \param b_playlist TRUE for playlist, FALSE for media library
 339  * \param b_locked TRUE if the playlist is locked
 340  * \return The id of the playlist item
 341  */
 342 int playlist_Add( playlist_t *p_playlist, const char *psz_uri,
 343                   const char *psz_name, int i_mode, int i_pos,
 344                   bool b_playlist, bool b_locked )
 345 {
 346     return playlist_AddExt( p_playlist, psz_uri, psz_name,
 347                             i_mode, i_pos, -1, NULL, 0, b_playlist, b_locked );
 348 }
 349
 350 /**
 351  * Add a MRL into the playlist or the media library, duration and options given
 352  *
 353  * \param p_playlist the playlist to add into
 354  * \param psz_uri the mrl to add to the playlist
 355  * \param psz_name a text giving a name or description of this item
 356  * \param i_mode the mode used when adding
 357  * \param i_pos the position in the playlist where to add. If this is
 358  *        PLAYLIST_END the item will be added at the end of the playlist
 359  *        regardless of its size
 360  * \param i_duration length of the item in milliseconds.
 361  * \param ppsz_options an array of options
 362  * \param i_options the number of options
 363  * \param b_playlist TRUE for playlist, FALSE for media library
 364  * \param b_locked TRUE if the playlist is locked
 365  * \return The id of the playlist item
 366 */
 367 int playlist_AddExt( playlist_t *p_playlist, const char * psz_uri,
 368                      const char *psz_name, int i_mode, int i_pos,
 369                      mtime_t i_duration, const char *const *ppsz_options,
 370                      int i_options, bool b_playlist, bool b_locked )
 371 {
 372     int i_ret;
 373     input_item_t *p_input = input_ItemNewExt( p_playlist, psz_uri, psz_name,
 374                                               i_options, ppsz_options,
 375                                               i_duration );
 376
 377     i_ret = playlist_AddInput( p_playlist, p_input, i_mode, i_pos, b_playlist,
 378                                b_locked );
 379     int i_id = (i_ret == VLC_SUCCESS) ? p_input->i_id : -1;
 380
 381     vlc_gc_decref( p_input );
 382
 383     return i_id;
 384 }
 385
 386 /**
 387  * Add an input item to the playlist node
 388  *
 389  * \param p_playlist the playlist to add into
 390  * \param p_input the input item to add
 391  * \param i_mode the mode used when adding
 392  * \param i_pos the position in the playlist where to add. If this is
 393  *        PLAYLIST_END the item will be added at the end of the playlist
 394  *        regardless of its size
 395  * \param b_playlist TRUE for playlist, FALSE for media library
 396  * \param b_locked TRUE if the playlist is locked
 397  * \return VLC_SUCCESS or VLC_ENOMEM or VLC_EGENERIC
 398 */
 399 int playlist_AddInput( playlist_t* p_playlist, input_item_t *p_input,
 400                        int i_mode, int i_pos, bool b_playlist,
 401                        bool b_locked )
 402 {
 403     playlist_item_t *p_item_cat, *p_item_one;
 404     if( p_playlist->b_die ) return VLC_EGENERIC;
 405     if( !p_playlist->b_doing_ml )
 406         PL_DEBUG( "adding item `%s' ( %s )", p_input->psz_name,
 407                                              p_input->psz_uri );
 408
 409     PL_LOCK_IF( !b_locked );
 410
 411     /* Add to ONELEVEL */
 412     p_item_one = playlist_ItemNewFromInput( p_playlist, p_input );
 413     if( p_item_one == NULL ) return VLC_ENOMEM;
 414     AddItem( p_playlist, p_item_one,
 415              b_playlist ? p_playlist->p_local_onelevel :
 416                           p_playlist->p_ml_onelevel , i_mode, i_pos );
 417
 418     /* Add to CATEGORY */
 419     p_item_cat = playlist_ItemNewFromInput( p_playlist, p_input );
 420     if( p_item_cat == NULL ) return VLC_ENOMEM;
 421     AddItem( p_playlist, p_item_cat,
 422              b_playlist ? p_playlist->p_local_category :
 423                           p_playlist->p_ml_category , i_mode, i_pos );
 424
 425     GoAndPreparse( p_playlist, i_mode, p_item_cat, p_item_one );
 426
 427     PL_UNLOCK_IF( !b_locked );
 428     return VLC_SUCCESS;
 429 }
 430
 431 /**
 432  * Add input
 433  *
 434  * Add an input item to p_direct_parent in the category tree, and to the
 435  * matching top category in onelevel
 436  * \param p_playlist the playlist to add into
 437  * \param p_input the input item to add
 438  * \param p_direct_parent the parent item to add into
 439  * \param i_mode the mode used when adding
 440  * \param i_pos the position in the playlist where to add. If this is
 441  *        PLAYLIST_END the item will be added at the end of the playlist
 442  *        regardless of its size
 443  * \param i_cat id of the items category
 444  * \param i_one id of the item onelevel category
 445  * \param b_locked TRUE if the playlist is locked
 446  * \return VLC_SUCCESS if success, VLC_EGENERIC if fail, VLC_ENOMEM if OOM
 447  */
 448 int playlist_BothAddInput( playlist_t *p_playlist,
 449                            input_item_t *p_input,
 450                            playlist_item_t *p_direct_parent,
 451                            int i_mode, int i_pos,
 452                            int *i_cat, int *i_one, bool b_locked )
 453 {
 454     playlist_item_t *p_item_cat, *p_item_one, *p_up;
 455     int i_top;
 456     assert( p_input );
 457
 458     if( !vlc_object_alive( p_playlist ) )
 459         return VLC_EGENERIC;
 460
 461     PL_LOCK_IF( !b_locked );
 462
 463     /* Add to category */
 464     p_item_cat = playlist_ItemNewFromInput( p_playlist, p_input );
 465     if( p_item_cat == NULL ) return VLC_ENOMEM;
 466     AddItem( p_playlist, p_item_cat, p_direct_parent, i_mode, i_pos );
 467
 468     /* Add to onelevel */
 469     /** \todo make a faster case for ml import */
 470     p_item_one = playlist_ItemNewFromInput( p_playlist, p_input );
 471     if( p_item_one == NULL ) return VLC_ENOMEM;
 472
 473     p_up = p_direct_parent;
 474     while( p_up->p_parent != p_playlist->p_root_category )
 475     {
 476         p_up = p_up->p_parent;
 477     }
 478     for( i_top = 0 ; i_top < p_playlist->p_root_onelevel->i_children; i_top++ )
 479     {
 480         if( p_playlist->p_root_onelevel->pp_children[i_top]->p_input->i_id ==
 481                              p_up->p_input->i_id )
 482         {
 483             AddItem( p_playlist, p_item_one,
 484                      p_playlist->p_root_onelevel->pp_children[i_top],
 485                      i_mode, i_pos );
 486             break;
 487         }
 488     }
 489     GoAndPreparse( p_playlist, i_mode, p_item_cat, p_item_one );
 490
 491     if( i_cat ) *i_cat = p_item_cat->i_id;
 492     if( i_one ) *i_one = p_item_one->i_id;
 493
 494     PL_UNLOCK_IF( !b_locked );
 495     return VLC_SUCCESS;
 496 }
 497
 498 /**
 499  * Add an input item to a given node
 500  *
 501  * \param p_playlist the playlist to add into
 502  * \param p_input the input item to add
 503  * \param p_parent the parent item to add into
 504  * \param i_mode the mode used when addin
 505  * \param i_pos the position in the playlist where to add. If this is
 506  *        PLAYLIST_END the item will be added at the end of the playlist
 507  *        regardless of its size
 508  * \param b_locked TRUE if the playlist is locked
 509  * \return the new playlist item
 510  */
 511 playlist_item_t * playlist_NodeAddInput( playlist_t *p_playlist,
 512                                          input_item_t *p_input,
 513                                          playlist_item_t *p_parent,
 514                                          int i_mode, int i_pos,
 515                                          bool b_locked )
 516 {
 517     playlist_item_t *p_item;
 518     assert( p_input );
 519     assert( p_parent && p_parent->i_children != -1 );
 520
 521     if( p_playlist->b_die )
 522         return NULL;
 523     PL_LOCK_IF( !b_locked );
 524
 525     p_item = playlist_ItemNewFromInput( p_playlist, p_input );
 526     if( p_item == NULL ) return NULL;
 527     AddItem( p_playlist, p_item, p_parent, i_mode, i_pos );
 528
 529     PL_UNLOCK_IF( !b_locked );
 530
 531     return p_item;
 532 }
 533
 534 /*****************************************************************************
 535  * Playlist item misc operations
 536  *****************************************************************************/
 537
 538 /**
 539  * Item to node
 540  *
 541  * Transform an item to a node. Return the node in the category tree, or NULL
 542  * if not found there
 543  * This function must be entered without the playlist lock
 544  * \param p_playlist the playlist object
 545  * \param p_item the item to transform
 546  * \param b_locked TRUE if the playlist is locked
 547  * \return the item transform in a node
 548  */
 549 playlist_item_t *playlist_ItemToNode( playlist_t *p_playlist,
 550                                       playlist_item_t *p_item,
 551                                       bool b_locked )
 552 {
 553
 554     playlist_item_t *p_item_in_category;
 555     /* What we do
 556      * Find the input in CATEGORY.
 557      *  - If we find it
 558      *    - change it to node
 559      *    - we'll return it at the end
 560      *    - If we are a direct child of onelevel root, change to node, else
 561      *      delete the input from ONELEVEL
 562      *  - If we don't find it, just change to node (we are probably in VLM)
 563      *    and return NULL
 564      *
 565      * If we were in ONELEVEL, we thus retrieve the node in CATEGORY (will be
 566      * useful for later BothAddInput )
 567      */
 568
 569     PL_LOCK_IF( !b_locked );
 570
 571     /* Fast track the media library, no time to loose */
 572     if( p_item == p_playlist->p_ml_category ) {
 573         PL_UNLOCK_IF( !b_locked );
 574         return p_item;
 575     }
 576
 577     /** \todo First look if we don't already have it */
 578     p_item_in_category = playlist_ItemFindFromInputAndRoot(
 579                                             p_playlist, p_item->p_input->i_id,
 580                                             p_playlist->p_root_category,
 581                                             true );
 582
 583     if( p_item_in_category )
 584     {
 585         playlist_item_t *p_item_in_one = playlist_ItemFindFromInputAndRoot(
 586                                             p_playlist, p_item->p_input->i_id,
 587                                             p_playlist->p_root_onelevel,
 588                                             true );
 589         assert( p_item_in_one );
 590
 591         /* We already have it, and there is nothing more to do */
 592         ChangeToNode( p_playlist, p_item_in_category );
 593
 594         /* Item in one is a root, change it to node */
 595         if( p_item_in_one->p_parent == p_playlist->p_root_onelevel )
 596             ChangeToNode( p_playlist, p_item_in_one );
 597         else
 598         {
 599             DeleteFromInput( p_playlist, p_item_in_one->p_input->i_id,
 600                              p_playlist->p_root_onelevel, false );
 601         }
 602         p_playlist->b_reset_currently_playing = true;
 603         vlc_object_signal_unlocked( p_playlist );
 604         var_SetInteger( p_playlist, "item-change", p_item_in_category->
 605                                                         p_input->i_id );
 606         PL_UNLOCK_IF( !b_locked );
 607         return p_item_in_category;
 608     }
 609     else
 610     {
 611         ChangeToNode( p_playlist, p_item );
 612         PL_UNLOCK_IF( !b_locked );
 613         return p_item;
 614     }
 615 }
 616
 617 /**
 618  * Find an item within a root, given its input id.
 619  *
 620  * \param p_playlist the playlist object
 621  * \param i_input_id id of the input
 622  * \param p_root root playlist item
 623  * \param b_items_only TRUE if we want the item himself
 624  * \return the first found item, or NULL if not found
 625  */
 626 playlist_item_t *playlist_ItemFindFromInputAndRoot( playlist_t *p_playlist,
 627                                                     int i_input_id,
 628                                                     playlist_item_t *p_root,
 629                                                     bool b_items_only )
 630 {
 631     int i;
 632     for( i = 0 ; i< p_root->i_children ; i++ )
 633     {
 634         if( ( b_items_only ? p_root->pp_children[i]->i_children == -1 : 1 ) &&
 635             p_root->pp_children[i]->p_input->i_id == i_input_id )
 636         {
 637             return p_root->pp_children[i];
 638         }
 639         else if( p_root->pp_children[i]->i_children >= 0 )
 640         {
 641             playlist_item_t *p_search =
 642                  playlist_ItemFindFromInputAndRoot( p_playlist, i_input_id,
 643                                                     p_root->pp_children[i],
 644                                                     b_items_only );
 645             if( p_search ) return p_search;
 646         }
 647     }
 648     return NULL;
 649 }
 650
 651
 652 static int TreeMove( playlist_t *p_playlist, playlist_item_t *p_item,
 653                      playlist_item_t *p_node, int i_newpos )
 654 {
 655     int j;
 656     playlist_item_t *p_detach = p_item->p_parent;
 657     (void)p_playlist;
 658
 659     if( p_node->i_children == -1 ) return VLC_EGENERIC;
 660
 661     for( j = 0; j < p_detach->i_children; j++ )
 662     {
 663          if( p_detach->pp_children[j] == p_item ) break;
 664     }
 665     REMOVE_ELEM( p_detach->pp_children, p_detach->i_children, j );
 666
 667     /* Attach to new parent */
 668     INSERT_ELEM( p_node->pp_children, p_node->i_children, i_newpos, p_item );
 669     p_item->p_parent = p_node;
 670
 671     return VLC_SUCCESS;
 672 }
 673
 674 /**
 675  * Moves an item
 676  *
 677  * This function must be entered with the playlist lock
 678  *
 679  * \param p_playlist the playlist
 680  * \param p_item the item to move
 681  * \param p_node the new parent of the item
 682  * \param i_newpos the new position under this new parent
 683  * \return VLC_SUCCESS or an error
 684  */
 685 int playlist_TreeMove( playlist_t * p_playlist, playlist_item_t *p_item,
 686                        playlist_item_t *p_node, int i_newpos )
 687 {
 688     int i_ret;
 689     /* Drop on a top level node. Move in the two trees */
 690     if( p_node->p_parent == p_playlist->p_root_category ||
 691         p_node->p_parent == p_playlist->p_root_onelevel )
 692     {
 693         /* Fixme: avoid useless lookups but we need some clean helpers */
 694         {
 695             /* Fixme: if we try to move a node on a top-level node, it will
 696              * fail because the node doesn't exist in onelevel and we will
 697              * do some shit in onelevel. We should recursively move all items
 698              * within the node */
 699             playlist_item_t *p_node_onelevel;
 700             playlist_item_t *p_item_onelevel;
 701             p_node_onelevel = playlist_ItemFindFromInputAndRoot( p_playlist,
 702                                                 p_node->p_input->i_id,
 703                                                 p_playlist->p_root_onelevel,
 704                                                 false );
 705             p_item_onelevel = playlist_ItemFindFromInputAndRoot( p_playlist,
 706                                                 p_item->p_input->i_id,
 707                                                 p_playlist->p_root_onelevel,
 708                                                 false );
 709             if( p_node_onelevel && p_item_onelevel )
 710                 TreeMove( p_playlist, p_item_onelevel, p_node_onelevel, 0 );
 711         }
 712         {
 713             playlist_item_t *p_node_category;
 714             playlist_item_t *p_item_category;
 715             p_node_category = playlist_ItemFindFromInputAndRoot( p_playlist,
 716                                                 p_node->p_input->i_id,
 717                                                 p_playlist->p_root_category,
 718                                                 false );
 719             p_item_category = playlist_ItemFindFromInputAndRoot( p_playlist,
 720                                                 p_item->p_input->i_id,
 721                                                 p_playlist->p_root_category,
 722                                                 false );
 723             if( p_node_category && p_item_category )
 724                 TreeMove( p_playlist, p_item_category, p_node_category, 0 );
 725         }
 726         i_ret = VLC_SUCCESS;
 727     }
 728     else
 729         i_ret = TreeMove( p_playlist, p_item, p_node, i_newpos );
 730     p_playlist->b_reset_currently_playing = true;
 731     vlc_object_signal_maybe( VLC_OBJECT(p_playlist) );
 732     return i_ret;
 733 }
 734
 735 /**
 736  * Send a notification that an item has been added to a node
 737  *
 738  * \param p_playlist the playlist object
 739  * \param i_item_id id of the item added
 740  * \param i_node_id id of the node in wich the item was added
 741  * \param b_signal TRUE if the function must send a signal
 742  * \return nothing
 743  */
 744 void playlist_SendAddNotify( playlist_t *p_playlist, int i_item_id,
 745                              int i_node_id, bool b_signal )
 746 {
 747     vlc_value_t val;
 748     playlist_add_t *p_add = (playlist_add_t *)malloc( sizeof( playlist_add_t) );
 749     if( !p_add )
 750         return;
 751
 752     p_add->i_item = i_item_id;
 753     p_add->i_node = i_node_id;
 754     val.p_address = p_add;
 755     p_playlist->b_reset_currently_playing = true;
 756     if( b_signal )
 757         vlc_object_signal_maybe( VLC_OBJECT(p_playlist) );
 758     var_Set( p_playlist, "item-append", val );
 759     free( p_add );
 760 }
 761
 762 /*****************************************************************************
 763  * Playlist item accessors
 764  *****************************************************************************/
 765
 766 /**
 767  * Set the name of a playlist item
 768  *
 769  * \param p_item the item
 770  * \param psz_name the name
 771  * \return VLC_SUCCESS or VLC_EGENERIC
 772  */
 773 int playlist_ItemSetName( playlist_item_t *p_item, const char *psz_name )
 774 {
 775     if( psz_name && p_item )
 776     {
 777         input_item_SetName( p_item->p_input, psz_name );
 778         return VLC_SUCCESS;
 779     }
 780     return VLC_EGENERIC;
 781 }
 782
 783 /***************************************************************************
 784  * The following functions are local
 785  ***************************************************************************/
 786
 787 /* Enqueue an item for preparsing, and play it, if needed */
 788 static void GoAndPreparse( playlist_t *p_playlist, int i_mode,
 789                            playlist_item_t *p_item_cat,
 790                            playlist_item_t *p_item_one )
 791 {
 792     if( (i_mode & PLAYLIST_GO ) )
 793     {
 794         playlist_item_t *p_parent = p_item_one;
 795         playlist_item_t *p_toplay = NULL;
 796         while( p_parent )
 797         {
 798             if( p_parent == p_playlist->p_root_category )
 799             {
 800                 p_toplay = p_item_cat; break;
 801             }
 802             else if( p_parent == p_playlist->p_root_onelevel )
 803             {
 804                 p_toplay = p_item_one; break;
 805             }
 806             p_parent = p_parent->p_parent;
 807         }
 808         assert( p_toplay );
 809         p_playlist->request.b_request = true;
 810         p_playlist->request.i_skip = 0;
 811         p_playlist->request.p_item = p_toplay;
 812         if( p_playlist->p_input )
 813             input_StopThread( p_playlist->p_input );
 814         p_playlist->request.i_status = PLAYLIST_RUNNING;
 815         vlc_object_signal_maybe( VLC_OBJECT(p_playlist) );
 816     }
 817     /* Preparse if PREPARSE or SPREPARSE & not enough meta */
 818     char *psz_artist = input_item_GetArtist( p_item_cat->p_input );
 819     char *psz_album = input_item_GetAlbum( p_item_cat->p_input );
 820     if( p_playlist->b_auto_preparse &&
 821           (i_mode & PLAYLIST_PREPARSE ||
 822           ( i_mode & PLAYLIST_SPREPARSE &&
 823             ( EMPTY_STR( psz_artist ) || ( EMPTY_STR( psz_album ) ) )
 824           ) ) )
 825         playlist_PreparseEnqueue( p_playlist, p_item_cat->p_input );
 826     /* If we already have it, signal it */
 827     else if( !EMPTY_STR( psz_artist ) && !EMPTY_STR( psz_album ) )
 828         input_item_SetPreparsed( p_item_cat->p_input, true );
 829     free( psz_artist );
 830     free( psz_album );
 831 }
 832
 833 /* Add the playlist item to the requested node and fire a notification */
 834 static void AddItem( playlist_t *p_playlist, playlist_item_t *p_item,
 835                      playlist_item_t *p_node, int i_mode, int i_pos )
 836 {
 837     ARRAY_APPEND(p_playlist->items, p_item);
 838     ARRAY_APPEND(p_playlist->all_items, p_item);
 839
 840     if( i_pos == PLAYLIST_END )
 841         playlist_NodeAppend( p_playlist, p_item, p_node );
 842     else
 843         playlist_NodeInsert( p_playlist, p_item, p_node, i_pos );
 844
 845     if( !p_playlist->b_doing_ml )
 846         playlist_SendAddNotify( p_playlist, p_item->i_id, p_node->i_id,
 847                                  !( i_mode & PLAYLIST_NO_REBUILD ) );
 848 }
 849
 850 /* Actually convert an item to a node */
 851 static void ChangeToNode( playlist_t *p_playlist, playlist_item_t *p_item )
 852 {
 853     int i;
 854     if( p_item->i_children == -1 )
 855         p_item->i_children = 0;
 856
 857     /* Remove it from the array of available items */
 858     ARRAY_BSEARCH( p_playlist->items,->i_id, int, p_item->i_id, i );
 859     if( i != -1 )
 860         ARRAY_REMOVE( p_playlist->items, i );
 861 }
 862
 863 /* Do the actual removal */
 864 static int DeleteInner( playlist_t * p_playlist, playlist_item_t *p_item,
 865                         bool b_stop )
 866 {
 867     int i;
 868     int i_id = p_item->i_id;
 869
 870     if( p_item->i_children > -1 )
 871     {
 872         return playlist_NodeDelete( p_playlist, p_item, true, false );
 873     }
 874     p_playlist->b_reset_currently_playing = true;
 875     var_SetInteger( p_playlist, "item-deleted", i_id );
 876
 877     /* Remove the item from the bank */
 878     ARRAY_BSEARCH( p_playlist->all_items,->i_id, int, i_id, i );
 879     if( i != -1 )
 880         ARRAY_REMOVE( p_playlist->all_items, i );
 881
 882     ARRAY_BSEARCH( p_playlist->items,->i_id, int, i_id, i );
 883     if( i != -1 )
 884         ARRAY_REMOVE( p_playlist->items, i );
 885
 886     /* Check if it is the current item */
 887     if( get_current_status_item( p_playlist ) == p_item )
 888     {
 889         /* Hack we don't call playlist_Control for lock reasons */
 890         if( b_stop )
 891         {
 892             p_playlist->request.i_status = PLAYLIST_STOPPED;
 893             p_playlist->request.b_request = true;
 894             p_playlist->request.p_item = NULL;
 895             msg_Info( p_playlist, "stopping playback" );
 896             vlc_object_signal_maybe( VLC_OBJECT(p_playlist) );
 897         }
 898     }
 899
 900     PL_DEBUG( "deleting item `%s'", p_item->p_input->psz_name );
 901
 902     /* Remove the item from its parent */
 903     playlist_NodeRemoveItem( p_playlist, p_item, p_item->p_parent );
 904
 905     playlist_ItemRelease( p_item );
 906
 907     return VLC_SUCCESS;
 908 }