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     playlist_item_t* p_item = malloc( sizeof( playlist_item_t ) );
 165     if( !p_item )
 166         return NULL;
 167
 168     assert( p_input );
 169
 170     p_item->p_input = p_input;
 171     vlc_gc_incref( p_item->p_input );
 172
 173     p_item->i_id = ++pl_priv(p_playlist)->i_last_playlist_id;
 174
 175     p_item->p_parent = NULL;
 176     p_item->i_children = -1;
 177     p_item->pp_children = NULL;
 178     p_item->i_flags = 0;
 179     p_item->p_playlist = p_playlist;
 180
 181     install_input_item_observer( p_item );
 182
 183     return p_item;
 184 }
 185
 186 playlist_item_t * playlist_ItemNewWithType( playlist_t *p_playlist,
 187                                             const char *psz_uri,
 188                                             const char *psz_name,
 189                                             int i_options,
 190                                             const char *const *ppsz_options,
 191                                             int i_duration, int i_type )
 192 {
 193     input_item_t *p_input;
 194     if( psz_uri == NULL ) return NULL;
 195     p_input = input_item_NewWithType( VLC_OBJECT(p_playlist), psz_uri,
 196                                       psz_name,
 197                                       i_options, ppsz_options, VLC_INPUT_OPTION_TRUSTED,
 198                                       i_duration, i_type );
 199     return playlist_ItemNewFromInput( p_playlist, p_input );
 200 }
 201
 202 /***************************************************************************
 203  * Playlist item destruction
 204  ***************************************************************************/
 205
 206 /**
 207  * Release an item
 208  *
 209  * \param p_item item to delete
 210  * \return VLC_SUCCESS
 211 */
 212 int playlist_ItemRelease( playlist_item_t *p_item )
 213 {
 214     /* For the assert */
 215     playlist_t *p_playlist = p_item->p_playlist;
 216     PL_ASSERT_LOCKED;
 217
 218     /* Surprise, we can't actually do more because we
 219      * don't do refcounting, or eauivalent.
 220      * Because item are not only accessed by their id
 221      * using playlist_item outside the PL_LOCK isn't safe.
 222      * Most of the modules does that.
 223      *
 224      * Who wants to add proper memory management? */
 225     uninstall_input_item_observer( p_item );
 226     ARRAY_APPEND( pl_priv(p_playlist)->items_to_delete, p_item);
 227     return VLC_SUCCESS;
 228 }
 229
 230 /**
 231  * Delete input item
 232  *
 233  * Remove an input item when it appears from a root playlist item
 234  * \param p_playlist playlist object
 235  * \param i_input_id id of the input to delete
 236  * \param p_root root playlist item
 237  * \param b_do_stop must stop or not the playlist
 238  * \return VLC_SUCCESS or VLC_EGENERIC
 239 */
 240 static int DeleteFromInput( playlist_t *p_playlist, int i_input_id,
 241                             playlist_item_t *p_root, bool b_do_stop )
 242 {
 243     int i;
 244     PL_ASSERT_LOCKED;
 245     for( i = 0 ; i< p_root->i_children ; i++ )
 246     {
 247         if( p_root->pp_children[i]->i_children == -1 &&
 248             p_root->pp_children[i]->p_input->i_id == i_input_id )
 249         {
 250             DeleteInner( p_playlist, p_root->pp_children[i], b_do_stop );
 251             return VLC_SUCCESS;
 252         }
 253         else if( p_root->pp_children[i]->i_children >= 0 )
 254         {
 255             int i_ret = DeleteFromInput( p_playlist, i_input_id,
 256                                          p_root->pp_children[i], b_do_stop );
 257             if( i_ret == VLC_SUCCESS ) return VLC_SUCCESS;
 258         }
 259     }
 260     return VLC_EGENERIC;
 261 }
 262
 263 /**
 264  * Delete input item
 265  *
 266  * Remove an input item when it appears from a root playlist item
 267  * \param p_playlist playlist object
 268  * \param i_input_id id of the input to delete
 269  * \param p_root root playlist item
 270  * \param b_locked TRUE if the playlist is locked
 271  * \return VLC_SUCCESS or VLC_EGENERIC
 272  */
 273 int playlist_DeleteFromInputInParent( playlist_t *p_playlist, int i_input_id,
 274                                       playlist_item_t *p_root, bool b_locked )
 275 {
 276     int i_ret;
 277     PL_LOCK_IF( !b_locked );
 278     i_ret = DeleteFromInput( p_playlist, i_input_id,
 279                              p_root, true );
 280     PL_UNLOCK_IF( !b_locked );
 281     return i_ret;
 282 }
 283
 284 /**
 285  * Delete from input
 286  *
 287  * Remove an input item from ONELEVEL and CATEGORY
 288  * \param p_playlist playlist object
 289  * \param i_input_id id of the input to delete
 290  * \param b_locked TRUE if the playlist is locked
 291  * \return VLC_SUCCESS or VLC_ENOITEM
 292  */
 293 int playlist_DeleteFromInput( playlist_t *p_playlist, int i_input_id,
 294                               bool b_locked )
 295 {
 296     int i_ret1, i_ret2;
 297     PL_LOCK_IF( !b_locked );
 298     i_ret1 = DeleteFromInput( p_playlist, i_input_id,
 299                              p_playlist->p_root_category, true );
 300     i_ret2 = DeleteFromInput( p_playlist, i_input_id,
 301                      p_playlist->p_root_onelevel, true );
 302     PL_UNLOCK_IF( !b_locked );
 303     return ( i_ret1 == VLC_SUCCESS || i_ret2 == VLC_SUCCESS ) ?
 304                             VLC_SUCCESS : VLC_ENOITEM;
 305 }
 306
 307 /**
 308  * Clear the playlist
 309  *
 310  * \param p_playlist playlist object
 311  * \param b_locked TRUE if the playlist is locked
 312  * \return nothing
 313  */
 314 void playlist_Clear( playlist_t * p_playlist, bool b_locked )
 315 {
 316     PL_LOCK_IF( !b_locked );
 317     playlist_NodeEmpty( p_playlist, p_playlist->p_local_category, true );
 318     playlist_NodeEmpty( p_playlist, p_playlist->p_local_onelevel, true );
 319     PL_UNLOCK_IF( !b_locked );
 320 }
 321
 322 /**
 323  * Delete playlist item
 324  *
 325  * Remove a playlist item from the playlist, given its id
 326  * This function is to be used only by the playlist
 327  * \param p_playlist playlist object
 328  * \param i_id id of the item do delete
 329  * \return VLC_SUCCESS or an error
 330  */
 331 int playlist_DeleteFromItemId( playlist_t *p_playlist, int i_id )
 332 {
 333     PL_ASSERT_LOCKED;
 334     playlist_item_t *p_item = playlist_ItemGetById( p_playlist, i_id,
 335                                                     pl_Locked );
 336     if( !p_item ) return VLC_EGENERIC;
 337     return DeleteInner( p_playlist, p_item, true );
 338 }
 339
 340 /***************************************************************************
 341  * Playlist item addition
 342  ***************************************************************************/
 343 /**
 344  * Playlist add
 345  *
 346  * Add an item to the playlist or the media library
 347  * \param p_playlist the playlist to add into
 348  * \param psz_uri the mrl to add to the playlist
 349  * \param psz_name a text giving a name or description of this item
 350  * \param i_mode the mode used when adding
 351  * \param i_pos the position in the playlist where to add. If this is
 352  *        PLAYLIST_END the item will be added at the end of the playlist
 353  *        regardless of its size
 354  * \param b_playlist TRUE for playlist, FALSE for media library
 355  * \param b_locked TRUE if the playlist is locked
 356  * \return The id of the playlist item
 357  */
 358 int playlist_Add( playlist_t *p_playlist, const char *psz_uri,
 359                   const char *psz_name, int i_mode, int i_pos,
 360                   bool b_playlist, bool b_locked )
 361 {
 362     return playlist_AddExt( p_playlist, psz_uri, psz_name,
 363                             i_mode, i_pos, -1, NULL, 0, b_playlist, b_locked );
 364 }
 365
 366 /**
 367  * Add a MRL into the playlist or the media library, duration and options given
 368  *
 369  * \param p_playlist the playlist to add into
 370  * \param psz_uri the mrl to add to the playlist
 371  * \param psz_name a text giving a name or description of this item
 372  * \param i_mode the mode used when adding
 373  * \param i_pos the position in the playlist where to add. If this is
 374  *        PLAYLIST_END the item will be added at the end of the playlist
 375  *        regardless of its size
 376  * \param i_duration length of the item in milliseconds.
 377  * \param ppsz_options an array of options
 378  * \param i_options the number of options
 379  * \param b_playlist TRUE for playlist, FALSE for media library
 380  * \param b_locked TRUE if the playlist is locked
 381  * \return The id of the playlist item
 382 */
 383 int playlist_AddExt( playlist_t *p_playlist, const char * psz_uri,
 384                      const char *psz_name, int i_mode, int i_pos,
 385                      mtime_t i_duration, const char *const *ppsz_options,
 386                      int i_options, bool b_playlist, bool b_locked )
 387 {
 388     int i_ret;
 389     input_item_t *p_input = input_item_NewExt( p_playlist, psz_uri, psz_name,
 390                                               i_options, ppsz_options, VLC_INPUT_OPTION_TRUSTED,
 391                                               i_duration );
 392
 393     i_ret = playlist_AddInput( p_playlist, p_input, i_mode, i_pos, b_playlist,
 394                                b_locked );
 395     int i_id = (i_ret == VLC_SUCCESS) ? p_input->i_id : -1;
 396
 397     vlc_gc_decref( p_input );
 398
 399     return i_id;
 400 }
 401
 402 /**
 403  * Add an input item to the playlist node
 404  *
 405  * \param p_playlist the playlist to add into
 406  * \param p_input the input item to add
 407  * \param i_mode the mode used when adding
 408  * \param i_pos the position in the playlist where to add. If this is
 409  *        PLAYLIST_END the item will be added at the end of the playlist
 410  *        regardless of its size
 411  * \param b_playlist TRUE for playlist, FALSE for media library
 412  * \param b_locked TRUE if the playlist is locked
 413  * \return VLC_SUCCESS or VLC_ENOMEM or VLC_EGENERIC
 414 */
 415 int playlist_AddInput( playlist_t* p_playlist, input_item_t *p_input,
 416                        int i_mode, int i_pos, bool b_playlist,
 417                        bool b_locked )
 418 {
 419     playlist_item_t *p_item_cat, *p_item_one;
 420     if( p_playlist->b_die ) return VLC_EGENERIC;
 421     if( !pl_priv(p_playlist)->b_doing_ml )
 422         PL_DEBUG( "adding item `%s' ( %s )", p_input->psz_name,
 423                                              p_input->psz_uri );
 424
 425     PL_LOCK_IF( !b_locked );
 426
 427     /* Add to ONELEVEL */
 428     p_item_one = playlist_ItemNewFromInput( p_playlist, p_input );
 429     if( p_item_one == NULL ) return VLC_ENOMEM;
 430     AddItem( p_playlist, p_item_one,
 431              b_playlist ? p_playlist->p_local_onelevel :
 432                           p_playlist->p_ml_onelevel , i_mode, i_pos );
 433
 434     /* Add to CATEGORY */
 435     p_item_cat = playlist_ItemNewFromInput( p_playlist, p_input );
 436     if( p_item_cat == NULL ) return VLC_ENOMEM;
 437     AddItem( p_playlist, p_item_cat,
 438              b_playlist ? p_playlist->p_local_category :
 439                           p_playlist->p_ml_category , i_mode, i_pos );
 440
 441     GoAndPreparse( p_playlist, i_mode, p_item_cat, p_item_one );
 442
 443     PL_UNLOCK_IF( !b_locked );
 444     return VLC_SUCCESS;
 445 }
 446
 447 /**
 448  * Add input
 449  *
 450  * Add an input item to p_direct_parent in the category tree, and to the
 451  * matching top category in onelevel
 452  * \param p_playlist the playlist to add into
 453  * \param p_input the input item to add
 454  * \param p_direct_parent the parent item to add into
 455  * \param i_mode the mode used when adding
 456  * \param i_pos the position in the playlist where to add. If this is
 457  *        PLAYLIST_END the item will be added at the end of the playlist
 458  *        regardless of its size
 459  * \param i_cat id of the items category
 460  * \param i_one id of the item onelevel category
 461  * \param b_locked TRUE if the playlist is locked
 462  * \return VLC_SUCCESS if success, VLC_EGENERIC if fail, VLC_ENOMEM if OOM
 463  */
 464 int playlist_BothAddInput( playlist_t *p_playlist,
 465                            input_item_t *p_input,
 466                            playlist_item_t *p_direct_parent,
 467                            int i_mode, int i_pos,
 468                            int *i_cat, int *i_one, bool b_locked )
 469 {
 470     playlist_item_t *p_item_cat, *p_item_one, *p_up;
 471     int i_top;
 472     assert( p_input );
 473
 474     if( !vlc_object_alive( p_playlist ) )
 475         return VLC_EGENERIC;
 476
 477     PL_LOCK_IF( !b_locked );
 478
 479     /* Add to category */
 480     p_item_cat = playlist_ItemNewFromInput( p_playlist, p_input );
 481     if( p_item_cat == NULL ) return VLC_ENOMEM;
 482     AddItem( p_playlist, p_item_cat, p_direct_parent, i_mode, i_pos );
 483
 484     /* Add to onelevel */
 485     /** \todo make a faster case for ml import */
 486     p_item_one = playlist_ItemNewFromInput( p_playlist, p_input );
 487     if( p_item_one == NULL ) return VLC_ENOMEM;
 488
 489     p_up = p_direct_parent;
 490     while( p_up->p_parent != p_playlist->p_root_category )
 491     {
 492         p_up = p_up->p_parent;
 493     }
 494     for( i_top = 0 ; i_top < p_playlist->p_root_onelevel->i_children; i_top++ )
 495     {
 496         if( p_playlist->p_root_onelevel->pp_children[i_top]->p_input->i_id ==
 497                              p_up->p_input->i_id )
 498         {
 499             AddItem( p_playlist, p_item_one,
 500                      p_playlist->p_root_onelevel->pp_children[i_top],
 501                      i_mode, i_pos );
 502             break;
 503         }
 504     }
 505     GoAndPreparse( p_playlist, i_mode, p_item_cat, p_item_one );
 506
 507     if( i_cat ) *i_cat = p_item_cat->i_id;
 508     if( i_one ) *i_one = p_item_one->i_id;
 509
 510     PL_UNLOCK_IF( !b_locked );
 511     return VLC_SUCCESS;
 512 }
 513
 514 /**
 515  * Add an input item to a given node
 516  *
 517  * \param p_playlist the playlist to add into
 518  * \param p_input the input item to add
 519  * \param p_parent the parent item to add into
 520  * \param i_mode the mode used when addin
 521  * \param i_pos the position in the playlist where to add. If this is
 522  *        PLAYLIST_END the item will be added at the end of the playlist
 523  *        regardless of its size
 524  * \param b_locked TRUE if the playlist is locked
 525  * \return the new playlist item
 526  */
 527 playlist_item_t * playlist_NodeAddInput( playlist_t *p_playlist,
 528                                          input_item_t *p_input,
 529                                          playlist_item_t *p_parent,
 530                                          int i_mode, int i_pos,
 531                                          bool b_locked )
 532 {
 533     playlist_item_t *p_item;
 534     assert( p_input );
 535     assert( p_parent && p_parent->i_children != -1 );
 536
 537     if( p_playlist->b_die )
 538         return NULL;
 539     PL_LOCK_IF( !b_locked );
 540
 541     p_item = playlist_ItemNewFromInput( p_playlist, p_input );
 542     if( p_item == NULL ) return NULL;
 543     AddItem( p_playlist, p_item, p_parent, i_mode, i_pos );
 544
 545     PL_UNLOCK_IF( !b_locked );
 546
 547     return p_item;
 548 }
 549
 550 /*****************************************************************************
 551  * Playlist item misc operations
 552  *****************************************************************************/
 553
 554 /**
 555  * Item to node
 556  *
 557  * Transform an item to a node. Return the node in the category tree, or NULL
 558  * if not found there
 559  * This function must be entered without the playlist lock
 560  * \param p_playlist the playlist object
 561  * \param p_item the item to transform
 562  * \param b_locked TRUE if the playlist is locked
 563  * \return the item transform in a node
 564  */
 565 playlist_item_t *playlist_ItemToNode( playlist_t *p_playlist,
 566                                       playlist_item_t *p_item,
 567                                       bool b_locked )
 568 {
 569
 570     playlist_item_t *p_item_in_category;
 571     /* What we do
 572      * Find the input in CATEGORY.
 573      *  - If we find it
 574      *    - change it to node
 575      *    - we'll return it at the end
 576      *    - If we are a direct child of onelevel root, change to node, else
 577      *      delete the input from ONELEVEL
 578      *  - If we don't find it, just change to node (we are probably in VLM)
 579      *    and return NULL
 580      *
 581      * If we were in ONELEVEL, we thus retrieve the node in CATEGORY (will be
 582      * useful for later BothAddInput )
 583      */
 584
 585     PL_LOCK_IF( !b_locked );
 586
 587     /* Fast track the media library, no time to loose */
 588     if( p_item == p_playlist->p_ml_category ) {
 589         PL_UNLOCK_IF( !b_locked );
 590         return p_item;
 591     }
 592
 593     /** \todo First look if we don't already have it */
 594     p_item_in_category = playlist_ItemFindFromInputAndRoot(
 595                                             p_playlist, p_item->p_input->i_id,
 596                                             p_playlist->p_root_category,
 597                                             true );
 598
 599     if( p_item_in_category )
 600     {
 601         playlist_item_t *p_item_in_one = playlist_ItemFindFromInputAndRoot(
 602                                             p_playlist, p_item->p_input->i_id,
 603                                             p_playlist->p_root_onelevel,
 604                                             true );
 605         assert( p_item_in_one );
 606
 607         /* We already have it, and there is nothing more to do */
 608         ChangeToNode( p_playlist, p_item_in_category );
 609
 610         /* Item in one is a root, change it to node */
 611         if( p_item_in_one->p_parent == p_playlist->p_root_onelevel )
 612             ChangeToNode( p_playlist, p_item_in_one );
 613         else
 614         {
 615             playlist_item_t *p_status_item = get_current_status_item( p_playlist );
 616             playlist_item_t *p_status_node = get_current_status_node( p_playlist );
 617             if( p_item_in_one == p_status_item )
 618             {
 619                 /* We're deleting the current playlist item. Update
 620                  * the playlist object to point at the previous item
 621                  * so the playlist won't be restarted */
 622                 playlist_item_t *p_prev_status_item = NULL;
 623                 int i = 0;
 624                 while( i < p_status_node->i_children &&
 625                        p_status_node->pp_children[i] != p_status_item )
 626                 {
 627                     p_prev_status_item = p_status_node->pp_children[i];
 628                     i++;
 629                 }
 630                 if( i == p_status_node->i_children )
 631                     p_prev_status_item = NULL;
 632                 if( p_prev_status_item )
 633                     set_current_status_item( p_playlist, p_prev_status_item );
 634             }
 635             DeleteFromInput( p_playlist, p_item_in_one->p_input->i_id,
 636                              p_playlist->p_root_onelevel, false );
 637         }
 638         pl_priv(p_playlist)->b_reset_currently_playing = true;
 639         vlc_cond_signal( &pl_priv(p_playlist)->signal );
 640         var_SetInteger( p_playlist, "item-change", p_item_in_category->
 641                                                         p_input->i_id );
 642         PL_UNLOCK_IF( !b_locked );
 643         return p_item_in_category;
 644     }
 645     else
 646     {
 647         ChangeToNode( p_playlist, p_item );
 648         PL_UNLOCK_IF( !b_locked );
 649         return p_item;
 650     }
 651 }
 652
 653 /**
 654  * Find an item within a root, given its input id.
 655  *
 656  * \param p_playlist the playlist object
 657  * \param i_input_id id of the input
 658  * \param p_root root playlist item
 659  * \param b_items_only TRUE if we want the item himself
 660  * \return the first found item, or NULL if not found
 661  */
 662 playlist_item_t *playlist_ItemFindFromInputAndRoot( playlist_t *p_playlist,
 663                                                     int i_input_id,
 664                                                     playlist_item_t *p_root,
 665                                                     bool b_items_only )
 666 {
 667     int i;
 668     for( i = 0 ; i< p_root->i_children ; i++ )
 669     {
 670         if( ( b_items_only ? p_root->pp_children[i]->i_children == -1 : 1 ) &&
 671             p_root->pp_children[i]->p_input->i_id == i_input_id )
 672         {
 673             return p_root->pp_children[i];
 674         }
 675         else if( p_root->pp_children[i]->i_children >= 0 )
 676         {
 677             playlist_item_t *p_search =
 678                  playlist_ItemFindFromInputAndRoot( p_playlist, i_input_id,
 679                                                     p_root->pp_children[i],
 680                                                     b_items_only );
 681             if( p_search ) return p_search;
 682         }
 683     }
 684     return NULL;
 685 }
 686
 687
 688 static int TreeMove( playlist_t *p_playlist, playlist_item_t *p_item,
 689                      playlist_item_t *p_node, int i_newpos )
 690 {
 691     int j;
 692     playlist_item_t *p_detach = p_item->p_parent;
 693     (void)p_playlist;
 694
 695     if( p_node->i_children == -1 ) return VLC_EGENERIC;
 696
 697     for( j = 0; j < p_detach->i_children; j++ )
 698     {
 699          if( p_detach->pp_children[j] == p_item ) break;
 700     }
 701     REMOVE_ELEM( p_detach->pp_children, p_detach->i_children, j );
 702
 703     /* If j < i_newpos, we are moving the element from the top to the
 704      * down of the playlist. So when removing the element we have
 705      * to change the position as we loose one element
 706      */
 707     if( j < i_newpos )
 708         i_newpos--;
 709
 710     /* Attach to new parent */
 711     INSERT_ELEM( p_node->pp_children, p_node->i_children, i_newpos, p_item );
 712     p_item->p_parent = p_node;
 713
 714     return VLC_SUCCESS;
 715 }
 716
 717 /**
 718  * Moves an item
 719  *
 720  * This function must be entered with the playlist lock
 721  *
 722  * \param p_playlist the playlist
 723  * \param p_item the item to move
 724  * \param p_node the new parent of the item
 725  * \param i_newpos the new position under this new parent
 726  * \return VLC_SUCCESS or an error
 727  */
 728 int playlist_TreeMove( playlist_t * p_playlist, playlist_item_t *p_item,
 729                        playlist_item_t *p_node, int i_newpos )
 730 {
 731     int i_ret;
 732     PL_ASSERT_LOCKED;
 733
 734     /* Drop on a top level node. Move in the two trees */
 735     if( p_node->p_parent == p_playlist->p_root_category ||
 736         p_node->p_parent == p_playlist->p_root_onelevel )
 737     {
 738         /* Fixme: avoid useless lookups but we need some clean helpers */
 739         {
 740             /* Fixme: if we try to move a node on a top-level node, it will
 741              * fail because the node doesn't exist in onelevel and we will
 742              * do some shit in onelevel. We should recursively move all items
 743              * within the node */
 744             playlist_item_t *p_node_onelevel;
 745             playlist_item_t *p_item_onelevel;
 746             p_node_onelevel = playlist_ItemFindFromInputAndRoot( p_playlist,
 747                                                 p_node->p_input->i_id,
 748                                                 p_playlist->p_root_onelevel,
 749                                                 false );
 750             p_item_onelevel = playlist_ItemFindFromInputAndRoot( p_playlist,
 751                                                 p_item->p_input->i_id,
 752                                                 p_playlist->p_root_onelevel,
 753                                                 false );
 754             if( p_node_onelevel && p_item_onelevel )
 755                 TreeMove( p_playlist, p_item_onelevel, p_node_onelevel, i_newpos );
 756         }
 757         {
 758             playlist_item_t *p_node_category;
 759             playlist_item_t *p_item_category;
 760             p_node_category = playlist_ItemFindFromInputAndRoot( p_playlist,
 761                                                 p_node->p_input->i_id,
 762                                                 p_playlist->p_root_category,
 763                                                 false );
 764             p_item_category = playlist_ItemFindFromInputAndRoot( p_playlist,
 765                                                 p_item->p_input->i_id,
 766                                                 p_playlist->p_root_category,
 767                                                 false );
 768             if( p_node_category && p_item_category )
 769                 TreeMove( p_playlist, p_item_category, p_node_category, 0 );
 770         }
 771         i_ret = VLC_SUCCESS;
 772     }
 773     else
 774         i_ret = TreeMove( p_playlist, p_item, p_node, i_newpos );
 775     pl_priv(p_playlist)->b_reset_currently_playing = true;
 776     vlc_cond_signal( &pl_priv(p_playlist)->signal );
 777     return i_ret;
 778 }
 779
 780 /**
 781  * Send a notification that an item has been added to a node
 782  *
 783  * \param p_playlist the playlist object
 784  * \param i_item_id id of the item added
 785  * \param i_node_id id of the node in wich the item was added
 786  * \param b_signal TRUE if the function must send a signal
 787  * \return nothing
 788  */
 789 void playlist_SendAddNotify( playlist_t *p_playlist, int i_item_id,
 790                              int i_node_id, bool b_signal )
 791 {
 792     vlc_value_t val;
 793     PL_ASSERT_LOCKED;
 794
 795     playlist_add_t *p_add = (playlist_add_t *)malloc( sizeof( playlist_add_t) );
 796     if( !p_add )
 797         return;
 798
 799     p_add->i_item = i_item_id;
 800     p_add->i_node = i_node_id;
 801     val.p_address = p_add;
 802     pl_priv(p_playlist)->b_reset_currently_playing = true;
 803     if( b_signal )
 804         vlc_cond_signal( &pl_priv(p_playlist)->signal );
 805
 806     var_Set( p_playlist, "item-append", val );
 807     free( p_add );
 808 }
 809
 810 /***************************************************************************
 811  * The following functions are local
 812  ***************************************************************************/
 813
 814 /* Enqueue an item for preparsing, and play it, if needed */
 815 static void GoAndPreparse( playlist_t *p_playlist, int i_mode,
 816                            playlist_item_t *p_item_cat,
 817                            playlist_item_t *p_item_one )
 818 {
 819     PL_ASSERT_LOCKED;
 820     if( (i_mode & PLAYLIST_GO ) )
 821     {
 822         playlist_item_t *p_parent = p_item_one;
 823         playlist_item_t *p_toplay = NULL;
 824         while( p_parent )
 825         {
 826             if( p_parent == p_playlist->p_root_category )
 827             {
 828                 p_toplay = p_item_cat; break;
 829             }
 830             else if( p_parent == p_playlist->p_root_onelevel )
 831             {
 832                 p_toplay = p_item_one; break;
 833             }
 834             p_parent = p_parent->p_parent;
 835         }
 836         assert( p_toplay );
 837         pl_priv(p_playlist)->request.b_request = true;
 838         pl_priv(p_playlist)->request.i_skip = 0;
 839         pl_priv(p_playlist)->request.p_item = p_toplay;
 840         if( pl_priv(p_playlist)->p_input )
 841             input_StopThread( pl_priv(p_playlist)->p_input );
 842         pl_priv(p_playlist)->request.i_status = PLAYLIST_RUNNING;
 843         vlc_cond_signal( &pl_priv(p_playlist)->signal );
 844     }
 845     /* Preparse if PREPARSE or SPREPARSE & not enough meta */
 846     char *psz_artist = input_item_GetArtist( p_item_cat->p_input );
 847     char *psz_album = input_item_GetAlbum( p_item_cat->p_input );
 848     if( pl_priv(p_playlist)->b_auto_preparse &&
 849           (i_mode & PLAYLIST_PREPARSE ||
 850           ( i_mode & PLAYLIST_SPREPARSE &&
 851             ( EMPTY_STR( psz_artist ) || ( EMPTY_STR( psz_album ) ) )
 852           ) ) )
 853         playlist_PreparseEnqueue( p_playlist, p_item_cat->p_input, pl_Locked );
 854     /* If we already have it, signal it */
 855     else if( !EMPTY_STR( psz_artist ) && !EMPTY_STR( psz_album ) )
 856         input_item_SetPreparsed( p_item_cat->p_input, true );
 857     free( psz_artist );
 858     free( psz_album );
 859 }
 860
 861 /* Add the playlist item to the requested node and fire a notification */
 862 static void AddItem( playlist_t *p_playlist, playlist_item_t *p_item,
 863                      playlist_item_t *p_node, int i_mode, int i_pos )
 864 {
 865     PL_ASSERT_LOCKED;
 866     ARRAY_APPEND(p_playlist->items, p_item);
 867     ARRAY_APPEND(p_playlist->all_items, p_item);
 868
 869     if( i_pos == PLAYLIST_END )
 870         playlist_NodeAppend( p_playlist, p_item, p_node );
 871     else
 872         playlist_NodeInsert( p_playlist, p_item, p_node, i_pos );
 873
 874     if( !pl_priv(p_playlist)->b_doing_ml )
 875         playlist_SendAddNotify( p_playlist, p_item->i_id, p_node->i_id,
 876                                  !( i_mode & PLAYLIST_NO_REBUILD ) );
 877 }
 878
 879 /* Actually convert an item to a node */
 880 static void ChangeToNode( playlist_t *p_playlist, playlist_item_t *p_item )
 881 {
 882     int i;
 883     if( p_item->i_children == -1 )
 884         p_item->i_children = 0;
 885
 886     /* Remove it from the array of available items */
 887     ARRAY_BSEARCH( p_playlist->items,->i_id, int, p_item->i_id, i );
 888     if( i != -1 )
 889         ARRAY_REMOVE( p_playlist->items, i );
 890 }
 891
 892 /* Do the actual removal */
 893 static int DeleteInner( playlist_t * p_playlist, playlist_item_t *p_item,
 894                         bool b_stop )
 895 {
 896     int i;
 897     int i_id = p_item->i_id;
 898     PL_ASSERT_LOCKED;
 899
 900     if( p_item->i_children > -1 )
 901     {
 902         return playlist_NodeDelete( p_playlist, p_item, true, false );
 903     }
 904     pl_priv(p_playlist)->b_reset_currently_playing = true;
 905     var_SetInteger( p_playlist, "item-deleted", i_id );
 906
 907     /* Remove the item from the bank */
 908     ARRAY_BSEARCH( p_playlist->all_items,->i_id, int, i_id, i );
 909     if( i != -1 )
 910         ARRAY_REMOVE( p_playlist->all_items, i );
 911
 912     ARRAY_BSEARCH( p_playlist->items,->i_id, int, i_id, i );
 913     if( i != -1 )
 914         ARRAY_REMOVE( p_playlist->items, i );
 915
 916     /* Check if it is the current item */
 917     if( get_current_status_item( p_playlist ) == p_item )
 918     {
 919         /* Hack we don't call playlist_Control for lock reasons */
 920         if( b_stop )
 921         {
 922             pl_priv(p_playlist)->request.i_status = PLAYLIST_STOPPED;
 923             pl_priv(p_playlist)->request.b_request = true;
 924             pl_priv(p_playlist)->request.p_item = NULL;
 925             msg_Info( p_playlist, "stopping playback" );
 926             vlc_cond_signal( &pl_priv(p_playlist)->signal );
 927         }
 928     }
 929
 930     PL_DEBUG( "deleting item `%s'", p_item->p_input->psz_name );
 931
 932     /* Remove the item from its parent */
 933     playlist_NodeRemoveItem( p_playlist, p_item, p_item->p_parent );
 934
 935     playlist_ItemRelease( p_item );
 936
 937     return VLC_SUCCESS;
 938 }