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