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