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, true );
  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,  true );
  98
  99         if( i_ret == VLC_SUCCESS && b_play )
 100         {
 101             playlist_Control( p_playlist, PLAYLIST_VIEWPLAY,
 102                           true, 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  * Delete item
 199  *
 200  * Delete a playlist item and detach its input item
 201  * \param p_item item to delete
 202  * \return VLC_SUCCESS
 203 */
 204 int playlist_ItemDelete( playlist_item_t *p_item )
 205 {
 206     uninstall_input_item_observer( p_item );
 207
 208     vlc_gc_decref( p_item->p_input );
 209     free( p_item );
 210     return VLC_SUCCESS;
 211 }
 212
 213 /**
 214  * Delete input item
 215  *
 216  * Remove an input item when it appears from a root playlist item
 217  * \param p_playlist playlist object
 218  * \param i_input_id id of the input to delete
 219  * \param p_root root playlist item
 220  * \param b_do_stop must stop or not the playlist
 221  * \return VLC_SUCCESS or VLC_EGENERIC
 222 */
 223 static int DeleteFromInput( playlist_t *p_playlist, int i_input_id,
 224                             playlist_item_t *p_root, bool b_do_stop )
 225 {
 226     int i;
 227     for( i = 0 ; i< p_root->i_children ; i++ )
 228     {
 229         if( p_root->pp_children[i]->i_children == -1 &&
 230             p_root->pp_children[i]->p_input->i_id == i_input_id )
 231         {
 232             DeleteInner( p_playlist, p_root->pp_children[i], b_do_stop );
 233             return VLC_SUCCESS;
 234         }
 235         else if( p_root->pp_children[i]->i_children >= 0 )
 236         {
 237             int i_ret = DeleteFromInput( p_playlist, i_input_id,
 238                                          p_root->pp_children[i], b_do_stop );
 239             if( i_ret == VLC_SUCCESS ) return VLC_SUCCESS;
 240         }
 241     }
 242     return VLC_EGENERIC;
 243 }
 244
 245 /**
 246  * Delete input item
 247  *
 248  * Remove an input item when it appears from a root playlist item
 249  * \param p_playlist playlist object
 250  * \param i_input_id id of the input to delete
 251  * \param p_root root playlist item
 252  * \param b_locked TRUE if the playlist is locked
 253  * \return VLC_SUCCESS or VLC_EGENERIC
 254  */
 255 int playlist_DeleteInputInParent( playlist_t *p_playlist, int i_input_id,
 256                                   playlist_item_t *p_root, bool b_locked )
 257 {
 258     int i_ret;
 259     PL_LOCK_IF( !b_locked );
 260     i_ret = DeleteFromInput( p_playlist, i_input_id,
 261                              p_root, true );
 262     PL_UNLOCK_IF( !b_locked );
 263     return i_ret;
 264 }
 265
 266 /**
 267  * Delete from input
 268  *
 269  * Remove an input item from ONELEVEL and CATEGORY
 270  * \param p_playlist playlist object
 271  * \param i_input_id id of the input to delete
 272  * \param b_locked TRUE if the playlist is locked
 273  * \return VLC_SUCCESS or VLC_ENOITEM
 274  */
 275 int playlist_DeleteFromInput( playlist_t *p_playlist, int i_input_id,
 276                               bool b_locked )
 277 {
 278     int i_ret1, i_ret2;
 279     PL_LOCK_IF( !b_locked );
 280     i_ret1 = DeleteFromInput( p_playlist, i_input_id,
 281                              p_playlist->p_root_category, true );
 282     i_ret2 = DeleteFromInput( p_playlist, i_input_id,
 283                      p_playlist->p_root_onelevel, true );
 284     PL_UNLOCK_IF( !b_locked );
 285     return ( i_ret1 == VLC_SUCCESS || i_ret2 == VLC_SUCCESS ) ?
 286                             VLC_SUCCESS : VLC_ENOITEM;
 287 }
 288
 289 /**
 290  * Clear the playlist
 291  *
 292  * \param p_playlist playlist object
 293  * \param b_locked TRUE if the playlist is locked
 294  * \return nothing
 295  */
 296 void playlist_Clear( playlist_t * p_playlist, bool b_locked )
 297 {
 298     PL_LOCK_IF( !b_locked );
 299     playlist_NodeEmpty( p_playlist, p_playlist->p_local_category, true );
 300     playlist_NodeEmpty( p_playlist, p_playlist->p_local_onelevel, true );
 301     PL_UNLOCK_IF( !b_locked );
 302 }
 303
 304 /**
 305  * Delete playlist item
 306  *
 307  * Remove a playlist item from the playlist, given its id
 308  * This function is to be used only by the playlist
 309  * \param p_playlist playlist object
 310  * \param i_id id of the item do delete
 311  * \return VLC_SUCCESS or an error
 312  */
 313 int playlist_DeleteFromItemId( playlist_t *p_playlist, int i_id )
 314 {
 315     playlist_item_t *p_item = playlist_ItemGetById( p_playlist, i_id,
 316                                                     true );
 317     if( !p_item ) return VLC_EGENERIC;
 318     return DeleteInner( p_playlist, p_item, true );
 319 }
 320
 321 /***************************************************************************
 322  * Playlist item addition
 323  ***************************************************************************/
 324 /**
 325  * Playlist add
 326  *
 327  * Add an item to the playlist or the media library
 328  * \param p_playlist the playlist to add into
 329  * \param psz_uri the mrl to add to the playlist
 330  * \param psz_name a text giving a name or description of this item
 331  * \param i_mode the mode used when adding
 332  * \param i_pos the position in the playlist where to add. If this is
 333  *        PLAYLIST_END the item will be added at the end of the playlist
 334  *        regardless of its size
 335  * \param b_playlist TRUE for playlist, FALSE for media library
 336  * \param b_locked TRUE if the playlist is locked
 337  * \return The id of the playlist item
 338  */
 339 int playlist_Add( playlist_t *p_playlist, const char *psz_uri,
 340                   const char *psz_name, int i_mode, int i_pos,
 341                   bool b_playlist, bool b_locked )
 342 {
 343     return playlist_AddExt( p_playlist, psz_uri, psz_name,
 344                             i_mode, i_pos, -1, NULL, 0, b_playlist, b_locked );
 345 }
 346
 347 /**
 348  * Add a MRL into the playlist or the media library, duration and options given
 349  *
 350  * \param p_playlist the playlist to add into
 351  * \param psz_uri the mrl to add to the playlist
 352  * \param psz_name a text giving a name or description of this item
 353  * \param i_mode the mode used when adding
 354  * \param i_pos the position in the playlist where to add. If this is
 355  *        PLAYLIST_END the item will be added at the end of the playlist
 356  *        regardless of its size
 357  * \param i_duration length of the item in milliseconds.
 358  * \param ppsz_options an array of options
 359  * \param i_options the number of options
 360  * \param b_playlist TRUE for playlist, FALSE for media library
 361  * \param b_locked TRUE if the playlist is locked
 362  * \return The id of the playlist item
 363 */
 364 int playlist_AddExt( playlist_t *p_playlist, const char * psz_uri,
 365                      const char *psz_name, int i_mode, int i_pos,
 366                      mtime_t i_duration, const char *const *ppsz_options,
 367                      int i_options, bool b_playlist, bool b_locked )
 368 {
 369     int i_ret;
 370     input_item_t *p_input = input_ItemNewExt( p_playlist, psz_uri, psz_name,
 371                                               i_options, ppsz_options,
 372                                               i_duration );
 373
 374     i_ret = playlist_AddInput( p_playlist, p_input, i_mode, i_pos, b_playlist,
 375                                b_locked );
 376     int i_id = (i_ret == VLC_SUCCESS) ? p_input->i_id : -1;
 377
 378     vlc_gc_decref( p_input );
 379
 380     return i_id;
 381 }
 382
 383 /**
 384  * Add an input item to the playlist node
 385  *
 386  * \param p_playlist the playlist to add into
 387  * \param p_input the input item to add
 388  * \param i_mode the mode used when adding
 389  * \param i_pos the position in the playlist where to add. If this is
 390  *        PLAYLIST_END the item will be added at the end of the playlist
 391  *        regardless of its size
 392  * \param b_playlist TRUE for playlist, FALSE for media library
 393  * \param b_locked TRUE if the playlist is locked
 394  * \return VLC_SUCCESS or VLC_ENOMEM or VLC_EGENERIC
 395 */
 396 int playlist_AddInput( playlist_t* p_playlist, input_item_t *p_input,
 397                        int i_mode, int i_pos, bool b_playlist,
 398                        bool b_locked )
 399 {
 400     playlist_item_t *p_item_cat, *p_item_one;
 401     if( p_playlist->b_die ) return VLC_EGENERIC;
 402     if( !p_playlist->b_doing_ml )
 403         PL_DEBUG( "adding item `%s' ( %s )", p_input->psz_name,
 404                                              p_input->psz_uri );
 405
 406     PL_LOCK_IF( !b_locked );
 407
 408     /* Add to ONELEVEL */
 409     p_item_one = playlist_ItemNewFromInput( p_playlist, p_input );
 410     if( p_item_one == NULL ) return VLC_ENOMEM;
 411     AddItem( p_playlist, p_item_one,
 412              b_playlist ? p_playlist->p_local_onelevel :
 413                           p_playlist->p_ml_onelevel , i_mode, i_pos );
 414
 415     /* Add to CATEGORY */
 416     p_item_cat = playlist_ItemNewFromInput( p_playlist, p_input );
 417     if( p_item_cat == NULL ) return VLC_ENOMEM;
 418     AddItem( p_playlist, p_item_cat,
 419              b_playlist ? p_playlist->p_local_category :
 420                           p_playlist->p_ml_category , i_mode, i_pos );
 421
 422     GoAndPreparse( p_playlist, i_mode, p_item_cat, p_item_one );
 423
 424     PL_UNLOCK_IF( !b_locked );
 425     return VLC_SUCCESS;
 426 }
 427
 428 /**
 429  * Add input
 430  *
 431  * Add an input item to p_direct_parent in the category tree, and to the
 432  * matching top category in onelevel
 433  * \param p_playlist the playlist to add into
 434  * \param p_input the input item to add
 435  * \param p_direct_parent the parent item to add into
 436  * \param i_mode the mode used when adding
 437  * \param i_pos the position in the playlist where to add. If this is
 438  *        PLAYLIST_END the item will be added at the end of the playlist
 439  *        regardless of its size
 440  * \param i_cat id of the items category
 441  * \param i_one id of the item onelevel category
 442  * \param b_locked TRUE if the playlist is locked
 443  * \return VLC_SUCCESS if success, VLC_EGENERIC if fail, VLC_ENOMEM if OOM
 444  */
 445 int playlist_BothAddInput( playlist_t *p_playlist,
 446                            input_item_t *p_input,
 447                            playlist_item_t *p_direct_parent,
 448                            int i_mode, int i_pos,
 449                            int *i_cat, int *i_one, bool b_locked )
 450 {
 451     playlist_item_t *p_item_cat, *p_item_one, *p_up;
 452     int i_top;
 453     assert( p_input );
 454
 455     if( !vlc_object_alive( p_playlist ) )
 456         return VLC_EGENERIC;
 457
 458     PL_LOCK_IF( !b_locked );
 459
 460     /* Add to category */
 461     p_item_cat = playlist_ItemNewFromInput( p_playlist, p_input );
 462     if( p_item_cat == NULL ) return VLC_ENOMEM;
 463     AddItem( p_playlist, p_item_cat, p_direct_parent, i_mode, i_pos );
 464
 465     /* Add to onelevel */
 466     /** \todo make a faster case for ml import */
 467     p_item_one = playlist_ItemNewFromInput( p_playlist, p_input );
 468     if( p_item_one == NULL ) return VLC_ENOMEM;
 469
 470     p_up = p_direct_parent;
 471     while( p_up->p_parent != p_playlist->p_root_category )
 472     {
 473         p_up = p_up->p_parent;
 474     }
 475     for( i_top = 0 ; i_top < p_playlist->p_root_onelevel->i_children; i_top++ )
 476     {
 477         if( p_playlist->p_root_onelevel->pp_children[i_top]->p_input->i_id ==
 478                              p_up->p_input->i_id )
 479         {
 480             AddItem( p_playlist, p_item_one,
 481                      p_playlist->p_root_onelevel->pp_children[i_top],
 482                      i_mode, i_pos );
 483             break;
 484         }
 485     }
 486     GoAndPreparse( p_playlist, i_mode, p_item_cat, p_item_one );
 487
 488     if( i_cat ) *i_cat = p_item_cat->i_id;
 489     if( i_one ) *i_one = p_item_one->i_id;
 490
 491     PL_UNLOCK_IF( !b_locked );
 492     return VLC_SUCCESS;
 493 }
 494
 495 /**
 496  * Add an input item to a given node
 497  *
 498  * \param p_playlist the playlist to add into
 499  * \param p_input the input item to add
 500  * \param p_parent the parent item to add into
 501  * \param i_mode the mode used when addin
 502  * \param i_pos the position in the playlist where to add. If this is
 503  *        PLAYLIST_END the item will be added at the end of the playlist
 504  *        regardless of its size
 505  * \param b_locked TRUE if the playlist is locked
 506  * \return the new playlist item
 507  */
 508 playlist_item_t * playlist_NodeAddInput( playlist_t *p_playlist,
 509                                          input_item_t *p_input,
 510                                          playlist_item_t *p_parent,
 511                                          int i_mode, int i_pos,
 512                                          bool b_locked )
 513 {
 514     playlist_item_t *p_item;
 515     assert( p_input );
 516     assert( p_parent && p_parent->i_children != -1 );
 517
 518     if( p_playlist->b_die )
 519         return NULL;
 520     PL_LOCK_IF( !b_locked );
 521
 522     p_item = playlist_ItemNewFromInput( p_playlist, p_input );
 523     if( p_item == NULL ) return NULL;
 524     AddItem( p_playlist, p_item, p_parent, i_mode, i_pos );
 525
 526     PL_UNLOCK_IF( !b_locked );
 527
 528     return p_item;
 529 }
 530
 531 /*****************************************************************************
 532  * Playlist item misc operations
 533  *****************************************************************************/
 534
 535 /**
 536  * Item to node
 537  *
 538  * Transform an item to a node. Return the node in the category tree, or NULL
 539  * if not found there
 540  * This function must be entered without the playlist lock
 541  * \param p_playlist the playlist object
 542  * \param p_item the item to transform
 543  * \param b_locked TRUE if the playlist is locked
 544  * \return the item transform in a node
 545  */
 546 playlist_item_t *playlist_ItemToNode( playlist_t *p_playlist,
 547                                       playlist_item_t *p_item,
 548                                       bool b_locked )
 549 {
 550
 551     playlist_item_t *p_item_in_category;
 552     /* What we do
 553      * Find the input in CATEGORY.
 554      *  - If we find it
 555      *    - change it to node
 556      *    - we'll return it at the end
 557      *    - If we are a direct child of onelevel root, change to node, else
 558      *      delete the input from ONELEVEL
 559      *  - If we don't find it, just change to node (we are probably in VLM)
 560      *    and return NULL
 561      *
 562      * If we were in ONELEVEL, we thus retrieve the node in CATEGORY (will be
 563      * useful for later BothAddInput )
 564      */
 565
 566     PL_LOCK_IF( !b_locked );
 567
 568     /* Fast track the media library, no time to loose */
 569     if( p_item == p_playlist->p_ml_category ) {
 570         PL_UNLOCK_IF( !b_locked );
 571         return p_item;
 572     }
 573
 574     /** \todo First look if we don't already have it */
 575     p_item_in_category = playlist_ItemFindFromInputAndRoot(
 576                                             p_playlist, p_item->p_input->i_id,
 577                                             p_playlist->p_root_category,
 578                                             true );
 579
 580     if( p_item_in_category )
 581     {
 582         playlist_item_t *p_item_in_one = playlist_ItemFindFromInputAndRoot(
 583                                             p_playlist, p_item->p_input->i_id,
 584                                             p_playlist->p_root_onelevel,
 585                                             true );
 586         assert( p_item_in_one );
 587
 588         /* We already have it, and there is nothing more to do */
 589         ChangeToNode( p_playlist, p_item_in_category );
 590
 591         /* Item in one is a root, change it to node */
 592         if( p_item_in_one->p_parent == p_playlist->p_root_onelevel )
 593             ChangeToNode( p_playlist, p_item_in_one );
 594         else
 595         {
 596             DeleteFromInput( p_playlist, p_item_in_one->p_input->i_id,
 597                              p_playlist->p_root_onelevel, false );
 598         }
 599         p_playlist->b_reset_currently_playing = true;
 600         vlc_object_signal_unlocked( p_playlist );
 601         var_SetInteger( p_playlist, "item-change", p_item_in_category->
 602                                                         p_input->i_id );
 603         PL_UNLOCK_IF( !b_locked );
 604         return p_item_in_category;
 605     }
 606     else
 607     {
 608         ChangeToNode( p_playlist, p_item );
 609         PL_UNLOCK_IF( !b_locked );
 610         return NULL;
 611     }
 612 }
 613
 614 /**
 615  * Find an item within a root, given its input id.
 616  *
 617  * \param p_playlist the playlist object
 618  * \param i_input_id id of the input
 619  * \param p_root root playlist item
 620  * \param b_items_only TRUE if we want the item himself
 621  * \return the first found item, or NULL if not found
 622  */
 623 playlist_item_t *playlist_ItemFindFromInputAndRoot( playlist_t *p_playlist,
 624                                                     int i_input_id,
 625                                                     playlist_item_t *p_root,
 626                                                     bool b_items_only )
 627 {
 628     int i;
 629     for( i = 0 ; i< p_root->i_children ; i++ )
 630     {
 631         if( ( b_items_only ? p_root->pp_children[i]->i_children == -1 : 1 ) &&
 632             p_root->pp_children[i]->p_input->i_id == i_input_id )
 633         {
 634             return p_root->pp_children[i];
 635         }
 636         else if( p_root->pp_children[i]->i_children >= 0 )
 637         {
 638             playlist_item_t *p_search =
 639                  playlist_ItemFindFromInputAndRoot( p_playlist, i_input_id,
 640                                                     p_root->pp_children[i],
 641                                                     b_items_only );
 642             if( p_search ) return p_search;
 643         }
 644     }
 645     return NULL;
 646 }
 647
 648
 649 static int TreeMove( playlist_t *p_playlist, playlist_item_t *p_item,
 650                      playlist_item_t *p_node, int i_newpos )
 651 {
 652     int j;
 653     playlist_item_t *p_detach = p_item->p_parent;
 654     (void)p_playlist;
 655
 656     if( p_node->i_children == -1 ) return VLC_EGENERIC;
 657
 658     for( j = 0; j < p_detach->i_children; j++ )
 659     {
 660          if( p_detach->pp_children[j] == p_item ) break;
 661     }
 662     REMOVE_ELEM( p_detach->pp_children, p_detach->i_children, j );
 663
 664     /* Attach to new parent */
 665     INSERT_ELEM( p_node->pp_children, p_node->i_children, i_newpos, p_item );
 666     p_item->p_parent = p_node;
 667
 668     return VLC_SUCCESS;
 669 }
 670
 671 /**
 672  * Moves an item
 673  *
 674  * This function must be entered with the playlist lock
 675  *
 676  * \param p_playlist the playlist
 677  * \param p_item the item to move
 678  * \param p_node the new parent of the item
 679  * \param i_newpos the new position under this new parent
 680  * \return VLC_SUCCESS or an error
 681  */
 682 int playlist_TreeMove( playlist_t * p_playlist, playlist_item_t *p_item,
 683                        playlist_item_t *p_node, int i_newpos )
 684 {
 685     int i_ret;
 686     /* Drop on a top level node. Move in the two trees */
 687     if( p_node->p_parent == p_playlist->p_root_category ||
 688         p_node->p_parent == p_playlist->p_root_onelevel )
 689     {
 690         /* Fixme: avoid useless lookups but we need some clean helpers */
 691         {
 692             /* Fixme: if we try to move a node on a top-level node, it will
 693              * fail because the node doesn't exist in onelevel and we will
 694              * do some shit in onelevel. We should recursively move all items
 695              * within the node */
 696             playlist_item_t *p_node_onelevel;
 697             playlist_item_t *p_item_onelevel;
 698             p_node_onelevel = playlist_ItemFindFromInputAndRoot( p_playlist,
 699                                                 p_node->p_input->i_id,
 700                                                 p_playlist->p_root_onelevel,
 701                                                 false );
 702             p_item_onelevel = playlist_ItemFindFromInputAndRoot( p_playlist,
 703                                                 p_item->p_input->i_id,
 704                                                 p_playlist->p_root_onelevel,
 705                                                 false );
 706             if( p_node_onelevel && p_item_onelevel )
 707                 TreeMove( p_playlist, p_item_onelevel, p_node_onelevel, 0 );
 708         }
 709         {
 710             playlist_item_t *p_node_category;
 711             playlist_item_t *p_item_category;
 712             p_node_category = playlist_ItemFindFromInputAndRoot( p_playlist,
 713                                                 p_node->p_input->i_id,
 714                                                 p_playlist->p_root_category,
 715                                                 false );
 716             p_item_category = playlist_ItemFindFromInputAndRoot( p_playlist,
 717                                                 p_item->p_input->i_id,
 718                                                 p_playlist->p_root_category,
 719                                                 false );
 720             if( p_node_category && p_item_category )
 721                 TreeMove( p_playlist, p_item_category, p_node_category, 0 );
 722         }
 723         i_ret = VLC_SUCCESS;
 724     }
 725     else
 726         i_ret = TreeMove( p_playlist, p_item, p_node, i_newpos );
 727     p_playlist->b_reset_currently_playing = true;
 728     vlc_object_signal_maybe( VLC_OBJECT(p_playlist) );
 729     return i_ret;
 730 }
 731
 732 /**
 733  * Send a notification that an item has been added to a node
 734  *
 735  * \param p_playlist the playlist object
 736  * \param i_item_id id of the item added
 737  * \param i_node_id id of the node in wich the item was added
 738  * \param b_signal TRUE if the function must send a signal
 739  * \return nothing
 740  */
 741 void playlist_SendAddNotify( playlist_t *p_playlist, int i_item_id,
 742                              int i_node_id, bool b_signal )
 743 {
 744     vlc_value_t val;
 745     playlist_add_t *p_add = (playlist_add_t *)malloc( sizeof( playlist_add_t) );
 746     if( !p_add )
 747         return;
 748
 749     p_add->i_item = i_item_id;
 750     p_add->i_node = i_node_id;
 751     val.p_address = p_add;
 752     p_playlist->b_reset_currently_playing = true;
 753     if( b_signal )
 754         vlc_object_signal_maybe( VLC_OBJECT(p_playlist) );
 755     var_Set( p_playlist, "item-append", val );
 756     free( p_add );
 757 }
 758
 759 /*****************************************************************************
 760  * Playlist item accessors
 761  *****************************************************************************/
 762
 763 /**
 764  * Set the name of a playlist item
 765  *
 766  * \param p_item the item
 767  * \param psz_name the name
 768  * \return VLC_SUCCESS or VLC_EGENERIC
 769  */
 770 int playlist_ItemSetName( playlist_item_t *p_item, const char *psz_name )
 771 {
 772     if( psz_name && p_item )
 773     {
 774         input_item_SetName( p_item->p_input, psz_name );
 775         return VLC_SUCCESS;
 776     }
 777     return VLC_EGENERIC;
 778 }
 779
 780 /***************************************************************************
 781  * The following functions are local
 782  ***************************************************************************/
 783
 784 /* Enqueue an item for preparsing, and play it, if needed */
 785 static void GoAndPreparse( playlist_t *p_playlist, int i_mode,
 786                            playlist_item_t *p_item_cat,
 787                            playlist_item_t *p_item_one )
 788 {
 789     if( (i_mode & PLAYLIST_GO ) )
 790     {
 791         playlist_item_t *p_parent = p_item_one;
 792         playlist_item_t *p_toplay = NULL;
 793         while( p_parent )
 794         {
 795             if( p_parent == p_playlist->p_root_category )
 796             {
 797                 p_toplay = p_item_cat; break;
 798             }
 799             else if( p_parent == p_playlist->p_root_onelevel )
 800             {
 801                 p_toplay = p_item_one; break;
 802             }
 803             p_parent = p_parent->p_parent;
 804         }
 805         assert( p_toplay );
 806         p_playlist->request.b_request = true;
 807         p_playlist->request.i_skip = 0;
 808         p_playlist->request.p_item = p_toplay;
 809         if( p_playlist->p_input )
 810             input_StopThread( p_playlist->p_input );
 811         p_playlist->request.i_status = PLAYLIST_RUNNING;
 812         vlc_object_signal_maybe( VLC_OBJECT(p_playlist) );
 813     }
 814     /* Preparse if PREPARSE or SPREPARSE & not enough meta */
 815     char *psz_artist = input_item_GetArtist( p_item_cat->p_input );
 816     char *psz_album = input_item_GetAlbum( p_item_cat->p_input );
 817     if( p_playlist->b_auto_preparse &&
 818           (i_mode & PLAYLIST_PREPARSE ||
 819           ( i_mode & PLAYLIST_SPREPARSE &&
 820             ( EMPTY_STR( psz_artist ) || ( EMPTY_STR( psz_album ) ) )
 821           ) ) )
 822         playlist_PreparseEnqueue( p_playlist, p_item_cat->p_input );
 823     /* If we already have it, signal it */
 824     else if( !EMPTY_STR( psz_artist ) && !EMPTY_STR( psz_album ) )
 825         input_item_SetPreparsed( p_item_cat->p_input, true );
 826     free( psz_artist );
 827     free( psz_album );
 828 }
 829
 830 /* Add the playlist item to the requested node and fire a notification */
 831 static void AddItem( playlist_t *p_playlist, playlist_item_t *p_item,
 832                      playlist_item_t *p_node, int i_mode, int i_pos )
 833 {
 834     ARRAY_APPEND(p_playlist->items, p_item);
 835     ARRAY_APPEND(p_playlist->all_items, p_item);
 836
 837     if( i_pos == PLAYLIST_END )
 838         playlist_NodeAppend( p_playlist, p_item, p_node );
 839     else
 840         playlist_NodeInsert( p_playlist, p_item, p_node, i_pos );
 841
 842     if( !p_playlist->b_doing_ml )
 843         playlist_SendAddNotify( p_playlist, p_item->i_id, p_node->i_id,
 844                                  !( i_mode & PLAYLIST_NO_REBUILD ) );
 845 }
 846
 847 /* Actually convert an item to a node */
 848 static void ChangeToNode( playlist_t *p_playlist, playlist_item_t *p_item )
 849 {
 850     int i;
 851     if( p_item->i_children == -1 )
 852         p_item->i_children = 0;
 853
 854     /* Remove it from the array of available items */
 855     ARRAY_BSEARCH( p_playlist->items,->i_id, int, p_item->i_id, i );
 856     if( i != -1 )
 857         ARRAY_REMOVE( p_playlist->items, i );
 858 }
 859
 860 /* Do the actual removal */
 861 static int DeleteInner( playlist_t * p_playlist, playlist_item_t *p_item,
 862                         bool b_stop )
 863 {
 864     int i;
 865     int i_id = p_item->i_id;
 866     bool b_delay_deletion = false;
 867
 868     if( p_item->i_children > -1 )
 869     {
 870         return playlist_NodeDelete( p_playlist, p_item, true, false );
 871     }
 872     p_playlist->b_reset_currently_playing = true;
 873     var_SetInteger( p_playlist, "item-deleted", i_id );
 874
 875     /* Remove the item from the bank */
 876     ARRAY_BSEARCH( p_playlist->all_items,->i_id, int, i_id, i );
 877     if( i != -1 )
 878         ARRAY_REMOVE( p_playlist->all_items, i );
 879
 880     ARRAY_BSEARCH( p_playlist->items,->i_id, int, i_id, i );
 881     if( i != -1 )
 882         ARRAY_REMOVE( p_playlist->items, i );
 883
 884     /* Check if it is the current item */
 885     if( get_current_status_item( p_playlist ) == p_item )
 886     {
 887         /* Hack we don't call playlist_Control for lock reasons */
 888         if( b_stop )
 889         {
 890             p_playlist->request.i_status = PLAYLIST_STOPPED;
 891             p_playlist->request.b_request = true;
 892             p_playlist->request.p_item = NULL;
 893             msg_Info( p_playlist, "stopping playback" );
 894             vlc_object_signal_maybe( VLC_OBJECT(p_playlist) );
 895         }
 896         b_delay_deletion = true;
 897     }
 898
 899     PL_DEBUG( "deleting item `%s'", p_item->p_input->psz_name );
 900
 901     /* Remove the item from its parent */
 902     playlist_NodeRemoveItem( p_playlist, p_item, p_item->p_parent );
 903
 904     if( !b_delay_deletion )
 905         playlist_ItemDelete( p_item );
 906     else
 907     {
 908         PL_DEBUG( "marking %s for further deletion", PLI_NAME( p_item ) );
 909         p_item->i_flags |= PLAYLIST_REMOVE_FLAG;
 910     }
 911
 912     return VLC_SUCCESS;
 913 }