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 static playlist_item_t *ItemToNode( playlist_t *, playlist_item_t *, bool );
  42
  43 /*****************************************************************************
  44  * An input item has gained a subitem (Event Callback)
  45  *****************************************************************************/
  46 static void input_item_subitem_added( const vlc_event_t * p_event,
  47                                       void * user_data )
  48 {
  49     playlist_item_t *p_parent_playlist_item = user_data;
  50     playlist_t * p_playlist = p_parent_playlist_item->p_playlist;
  51     input_item_t * p_parent, * p_child;
  52     playlist_item_t * p_child_in_category;
  53     playlist_item_t * p_item_in_category;
  54     bool b_play;
  55
  56     p_parent = p_event->p_obj;
  57     p_child = p_event->u.input_item_subitem_added.p_new_child;
  58
  59     PL_LOCK;
  60     b_play = var_CreateGetBool( p_playlist, "playlist-autostart" );
  61
  62     /* This part is really hakish, but this playlist system isn't simple */
  63     /* First check if we haven't already added the item as we are
  64      * listening using the onelevel and the category representent
  65      * (Because of the playlist design) */
  66     p_child_in_category = playlist_ItemFindFromInputAndRoot(
  67                             p_playlist, p_child,
  68                             p_playlist->p_root_category,
  69                             false /* Only non-node */ );
  70
  71     if( !p_child_in_category )
  72     {
  73         /* Then, transform to a node if needed */
  74         p_item_in_category = playlist_ItemFindFromInputAndRoot(
  75                                 p_playlist, p_parent,
  76                                 p_playlist->p_root_category,
  77                                 false /* Only non-node */ );
  78         if( !p_item_in_category )
  79         {
  80             /* Item may have been removed */
  81             PL_UNLOCK;
  82             return;
  83         }
  84
  85         bool b_stop = p_item_in_category->i_flags & PLAYLIST_SUBITEM_STOP_FLAG;
  86
  87         b_play = b_play &&
  88             p_item_in_category == get_current_status_item( p_playlist ) &&
  89             p_item_in_category->i_children == -1;
  90
  91         /* If this item is already a node don't transform it */
  92         if( p_item_in_category->i_children == -1 )
  93         {
  94             p_item_in_category = ItemToNode( p_playlist,
  95                     p_item_in_category, pl_Locked );
  96             p_item_in_category->p_input->i_type = ITEM_TYPE_PLAYLIST;
  97         }
  98
  99         int i_ret = playlist_BothAddInput( p_playlist, p_child,
 100                 p_item_in_category,
 101                 PLAYLIST_APPEND | PLAYLIST_SPREPARSE , PLAYLIST_END,
 102                 NULL, NULL, pl_Locked );
 103
 104         if( i_ret == VLC_SUCCESS && b_play )
 105         {
 106             if( b_stop )
 107             {
 108                 p_item_in_category->i_flags &= ~PLAYLIST_SUBITEM_STOP_FLAG;
 109                 PL_UNLOCK;
 110                 playlist_Stop( p_playlist );
 111                 return;
 112             }
 113             playlist_Control( p_playlist, PLAYLIST_VIEWPLAY,
 114                           pl_Locked, p_item_in_category, NULL );
 115         }
 116     }
 117
 118     PL_UNLOCK;
 119
 120 }
 121
 122 /*****************************************************************************
 123  * An input item's meta or duration has changed (Event Callback)
 124  *****************************************************************************/
 125 static void input_item_changed( const vlc_event_t * p_event,
 126                                 void * user_data )
 127 {
 128     playlist_item_t *p_item = user_data;
 129     VLC_UNUSED( p_event );
 130     var_SetAddress( p_item->p_playlist, "item-change", p_item->p_input );
 131 }
 132
 133 /*****************************************************************************
 134  * Listen to vlc_InputItemAddSubItem event
 135  *****************************************************************************/
 136 static void install_input_item_observer( playlist_item_t * p_item )
 137 {
 138     vlc_event_manager_t * p_em = &p_item->p_input->event_manager;
 139     vlc_event_attach( p_em, vlc_InputItemSubItemAdded,
 140                       input_item_subitem_added, p_item );
 141     vlc_event_attach( p_em, vlc_InputItemDurationChanged,
 142                       input_item_changed, p_item );
 143     vlc_event_attach( p_em, vlc_InputItemMetaChanged,
 144                       input_item_changed, p_item );
 145     vlc_event_attach( p_em, vlc_InputItemNameChanged,
 146                       input_item_changed, p_item );
 147     vlc_event_attach( p_em, vlc_InputItemInfoChanged,
 148                       input_item_changed, p_item );
 149     vlc_event_attach( p_em, vlc_InputItemErrorWhenReadingChanged,
 150                       input_item_changed, p_item );
 151 }
 152
 153 static void uninstall_input_item_observer( playlist_item_t * p_item )
 154 {
 155     vlc_event_manager_t * p_em = &p_item->p_input->event_manager;
 156     vlc_event_detach( p_em, vlc_InputItemSubItemAdded,
 157                       input_item_subitem_added, p_item );
 158     vlc_event_detach( p_em, vlc_InputItemMetaChanged,
 159                       input_item_changed, p_item );
 160     vlc_event_detach( p_em, vlc_InputItemDurationChanged,
 161                       input_item_changed, p_item );
 162     vlc_event_detach( p_em, vlc_InputItemNameChanged,
 163                       input_item_changed, p_item );
 164     vlc_event_detach( p_em, vlc_InputItemInfoChanged,
 165                       input_item_changed, p_item );
 166     vlc_event_detach( p_em, vlc_InputItemErrorWhenReadingChanged,
 167                       input_item_changed, p_item );
 168 }
 169
 170 /*****************************************************************************
 171  * Playlist item creation
 172  *****************************************************************************/
 173 playlist_item_t *playlist_ItemNewFromInput( playlist_t *p_playlist,
 174                                               input_item_t *p_input )
 175 {
 176     playlist_item_t* p_item = malloc( sizeof( playlist_item_t ) );
 177     if( !p_item )
 178         return NULL;
 179
 180     assert( p_input );
 181
 182     p_item->p_input = p_input;
 183     vlc_gc_incref( p_item->p_input );
 184
 185     p_item->i_id = ++pl_priv(p_playlist)->i_last_playlist_id;
 186
 187     p_item->p_parent = NULL;
 188     p_item->i_children = -1;
 189     p_item->pp_children = NULL;
 190     p_item->i_flags = 0;
 191     p_item->p_playlist = p_playlist;
 192
 193     install_input_item_observer( p_item );
 194
 195     return p_item;
 196 }
 197
 198 /***************************************************************************
 199  * Playlist item destruction
 200  ***************************************************************************/
 201
 202 /**
 203  * Release an item
 204  *
 205  * \param p_item item to delete
 206  * \return VLC_SUCCESS
 207 */
 208 int playlist_ItemRelease( playlist_item_t *p_item )
 209 {
 210     /* For the assert */
 211     playlist_t *p_playlist = p_item->p_playlist;
 212     PL_ASSERT_LOCKED;
 213
 214     /* Surprise, we can't actually do more because we
 215      * don't do refcounting, or eauivalent.
 216      * Because item are not only accessed by their id
 217      * using playlist_item outside the PL_LOCK isn't safe.
 218      * Most of the modules does that.
 219      *
 220      * Who wants to add proper memory management? */
 221     uninstall_input_item_observer( p_item );
 222     ARRAY_APPEND( pl_priv(p_playlist)->items_to_delete, p_item);
 223     return VLC_SUCCESS;
 224 }
 225
 226 /**
 227  * Delete input item
 228  *
 229  * Remove an input item when it appears from a root playlist item
 230  * \param p_playlist playlist object
 231  * \param p_input the input to delete
 232  * \param p_root root playlist item
 233  * \param b_do_stop must stop or not the playlist
 234  * \return VLC_SUCCESS or VLC_EGENERIC
 235 */
 236 static int DeleteFromInput( playlist_t *p_playlist, input_item_t *p_input,
 237                             playlist_item_t *p_root, bool b_do_stop )
 238 {
 239     int i;
 240     PL_ASSERT_LOCKED;
 241     for( i = 0 ; i< p_root->i_children ; i++ )
 242     {
 243         if( p_root->pp_children[i]->i_children == -1 &&
 244             p_root->pp_children[i]->p_input == p_input )
 245         {
 246             DeleteInner( p_playlist, p_root->pp_children[i], b_do_stop );
 247             return VLC_SUCCESS;
 248         }
 249         else if( p_root->pp_children[i]->i_children >= 0 )
 250         {
 251             int i_ret = DeleteFromInput( p_playlist, p_input,
 252                                          p_root->pp_children[i], b_do_stop );
 253             if( i_ret == VLC_SUCCESS ) return VLC_SUCCESS;
 254         }
 255     }
 256     return VLC_EGENERIC;
 257 }
 258
 259 /**
 260  * Delete input item
 261  *
 262  * Remove an input item when it appears from a root playlist item
 263  * \param p_playlist playlist object
 264  * \param p_input the input to delete
 265  * \param p_root root playlist item
 266  * \param b_locked TRUE if the playlist is locked
 267  * \return VLC_SUCCESS or VLC_EGENERIC
 268  */
 269 int playlist_DeleteFromInputInParent( playlist_t *p_playlist,
 270                                       input_item_t *p_item,
 271                                       playlist_item_t *p_root, bool b_locked )
 272 {
 273     int i_ret;
 274     PL_LOCK_IF( !b_locked );
 275     i_ret = DeleteFromInput( p_playlist, p_item, p_root, true );
 276     PL_UNLOCK_IF( !b_locked );
 277     return i_ret;
 278 }
 279
 280 /**
 281  * Delete from input
 282  *
 283  * Remove an input item from ONELEVEL and CATEGORY
 284  * \param p_playlist playlist object
 285  * \param p_input the input to delete
 286  * \param b_locked TRUE if the playlist is locked
 287  * \return VLC_SUCCESS or VLC_ENOITEM
 288  */
 289 int playlist_DeleteFromInput( playlist_t *p_playlist, input_item_t *p_input,
 290                               bool b_locked )
 291 {
 292     int i_ret1, i_ret2;
 293     PL_LOCK_IF( !b_locked );
 294     i_ret1 = DeleteFromInput( p_playlist, p_input,
 295                              p_playlist->p_root_category, true );
 296     i_ret2 = DeleteFromInput( p_playlist, p_input,
 297                      p_playlist->p_root_onelevel, true );
 298     PL_UNLOCK_IF( !b_locked );
 299     return ( i_ret1 == VLC_SUCCESS || i_ret2 == VLC_SUCCESS ) ?
 300                             VLC_SUCCESS : VLC_ENOITEM;
 301 }
 302
 303 /**
 304  * Clear the playlist
 305  *
 306  * \param p_playlist playlist object
 307  * \param b_locked TRUE if the playlist is locked
 308  * \return nothing
 309  */
 310 void playlist_Clear( playlist_t * p_playlist, bool b_locked )
 311 {
 312     PL_LOCK_IF( !b_locked );
 313     playlist_NodeEmpty( p_playlist, p_playlist->p_local_category, true );
 314     playlist_NodeEmpty( p_playlist, p_playlist->p_local_onelevel, true );
 315     PL_UNLOCK_IF( !b_locked );
 316 }
 317
 318 /**
 319  * Delete playlist item
 320  *
 321  * Remove a playlist item from the playlist, given its id
 322  * This function is to be used only by the playlist
 323  * \param p_playlist playlist object
 324  * \param i_id id of the item do delete
 325  * \return VLC_SUCCESS or an error
 326  */
 327 int playlist_DeleteFromItemId( playlist_t *p_playlist, int i_id )
 328 {
 329     PL_ASSERT_LOCKED;
 330     playlist_item_t *p_item = playlist_ItemGetById( p_playlist, i_id );
 331     if( !p_item ) return VLC_EGENERIC;
 332     return DeleteInner( p_playlist, p_item, true );
 333 }
 334
 335 /***************************************************************************
 336  * Playlist item addition
 337  ***************************************************************************/
 338 /**
 339  * Playlist add
 340  *
 341  * Add an item to the playlist or the media library
 342  * \param p_playlist the playlist to add into
 343  * \param psz_uri the mrl to add to the playlist
 344  * \param psz_name a text giving a name or description of this item
 345  * \param i_mode the mode used when adding
 346  * \param i_pos the position in the playlist where to add. If this is
 347  *        PLAYLIST_END the item will be added at the end of the playlist
 348  *        regardless of its size
 349  * \param b_playlist TRUE for playlist, FALSE for media library
 350  * \param b_locked TRUE if the playlist is locked
 351  * \return VLC_SUCCESS or a VLC error code
 352  */
 353 int playlist_Add( playlist_t *p_playlist, const char *psz_uri,
 354                   const char *psz_name, int i_mode, int i_pos,
 355                   bool b_playlist, bool b_locked )
 356 {
 357     return playlist_AddExt( p_playlist, psz_uri, psz_name,
 358                             i_mode, i_pos, -1, 0, NULL, 0, b_playlist, b_locked );
 359 }
 360
 361 /**
 362  * Add a MRL into the playlist or the media library, duration and options given
 363  *
 364  * \param p_playlist the playlist to add into
 365  * \param psz_uri the mrl to add to the playlist
 366  * \param psz_name a text giving a name or description of this item
 367  * \param i_mode the mode used when adding
 368  * \param i_pos the position in the playlist where to add. If this is
 369  *        PLAYLIST_END the item will be added at the end of the playlist
 370  *        regardless of its size
 371  * \param i_duration length of the item in milliseconds.
 372  * \param i_options the number of options
 373  * \param ppsz_options an array of options
 374  * \param i_option_flags options flags
 375  * \param b_playlist TRUE for playlist, FALSE for media library
 376  * \param b_locked TRUE if the playlist is locked
 377  * \return VLC_SUCCESS or a VLC error code
 378 */
 379 int playlist_AddExt( playlist_t *p_playlist, const char * psz_uri,
 380                      const char *psz_name, int i_mode, int i_pos,
 381                      mtime_t i_duration,
 382                      int i_options, const char *const *ppsz_options,
 383                      unsigned i_option_flags,
 384                      bool b_playlist, bool b_locked )
 385 {
 386     int i_ret;
 387     input_item_t *p_input;
 388
 389     p_input = input_item_NewExt( p_playlist, psz_uri, psz_name,
 390                                  i_options, ppsz_options, i_option_flags,
 391                                  i_duration );
 392     if( p_input == NULL )
 393         return VLC_ENOMEM;
 394     i_ret = playlist_AddInput( p_playlist, p_input, i_mode, i_pos, b_playlist,
 395                                b_locked );
 396     vlc_gc_decref( p_input );
 397     return i_ret;
 398 }
 399
 400 /**
 401  * Add an input item to the playlist node
 402  *
 403  * \param p_playlist the playlist to add into
 404  * \param p_input the input item to add
 405  * \param i_mode the mode used when adding
 406  * \param i_pos the position in the playlist where to add. If this is
 407  *        PLAYLIST_END the item will be added at the end of the playlist
 408  *        regardless of its size
 409  * \param b_playlist TRUE for playlist, FALSE for media library
 410  * \param b_locked TRUE if the playlist is locked
 411  * \return VLC_SUCCESS or VLC_ENOMEM or VLC_EGENERIC
 412 */
 413 int playlist_AddInput( playlist_t* p_playlist, input_item_t *p_input,
 414                        int i_mode, int i_pos, bool b_playlist,
 415                        bool b_locked )
 416 {
 417     playlist_item_t *p_item_cat, *p_item_one;
 418     if( p_playlist->b_die ) return VLC_EGENERIC;
 419     if( !pl_priv(p_playlist)->b_doing_ml )
 420         PL_DEBUG( "adding item `%s' ( %s )", p_input->psz_name,
 421                                              p_input->psz_uri );
 422
 423     PL_LOCK_IF( !b_locked );
 424
 425     /* Add to ONELEVEL */
 426     p_item_one = playlist_ItemNewFromInput( p_playlist, p_input );
 427     if( p_item_one == NULL ) return VLC_ENOMEM;
 428     AddItem( p_playlist, p_item_one,
 429              b_playlist ? p_playlist->p_local_onelevel :
 430                           p_playlist->p_ml_onelevel , i_mode, i_pos );
 431
 432     /* Add to CATEGORY */
 433     p_item_cat = playlist_ItemNewFromInput( p_playlist, p_input );
 434     if( p_item_cat == NULL ) return VLC_ENOMEM;
 435     AddItem( p_playlist, p_item_cat,
 436              b_playlist ? p_playlist->p_local_category :
 437                           p_playlist->p_ml_category , i_mode, i_pos );
 438
 439     GoAndPreparse( p_playlist, i_mode, p_item_cat, p_item_one );
 440
 441     PL_UNLOCK_IF( !b_locked );
 442     return VLC_SUCCESS;
 443 }
 444
 445 /**
 446  * Add input
 447  *
 448  * Add an input item to p_direct_parent in the category tree, and to the
 449  * matching top category in onelevel
 450  * \param p_playlist the playlist to add into
 451  * \param p_input the input item to add
 452  * \param p_direct_parent the parent item to add into
 453  * \param i_mode the mode used when adding
 454  * \param i_pos the position in the playlist where to add. If this is
 455  *        PLAYLIST_END the item will be added at the end of the playlist
 456  *        regardless of its size
 457  * \param i_cat id of the items category
 458  * \param i_one id of the item onelevel category
 459  * \param b_locked TRUE if the playlist is locked
 460  * \return VLC_SUCCESS if success, VLC_EGENERIC if fail, VLC_ENOMEM if OOM
 461  */
 462 int playlist_BothAddInput( playlist_t *p_playlist,
 463                            input_item_t *p_input,
 464                            playlist_item_t *p_direct_parent,
 465                            int i_mode, int i_pos,
 466                            int *i_cat, int *i_one, bool b_locked )
 467 {
 468     playlist_item_t *p_item_cat, *p_item_one, *p_up;
 469     int i_top;
 470     assert( p_input );
 471
 472     if( !vlc_object_alive( p_playlist ) )
 473         return VLC_EGENERIC;
 474
 475     PL_LOCK_IF( !b_locked );
 476
 477     /* Add to category */
 478     p_item_cat = playlist_ItemNewFromInput( p_playlist, p_input );
 479     if( p_item_cat == NULL ) return VLC_ENOMEM;
 480     AddItem( p_playlist, p_item_cat, p_direct_parent, i_mode, i_pos );
 481
 482     /* Add to onelevel */
 483     /** \todo make a faster case for ml import */
 484     p_item_one = playlist_ItemNewFromInput( p_playlist, p_input );
 485     if( p_item_one == NULL ) return VLC_ENOMEM;
 486
 487     p_up = p_direct_parent;
 488     while( p_up->p_parent != p_playlist->p_root_category )
 489     {
 490         p_up = p_up->p_parent;
 491     }
 492     for( i_top = 0 ; i_top < p_playlist->p_root_onelevel->i_children; i_top++ )
 493     {
 494         if( p_playlist->p_root_onelevel->pp_children[i_top]->p_input ==
 495                              p_up->p_input )
 496         {
 497             AddItem( p_playlist, p_item_one,
 498                      p_playlist->p_root_onelevel->pp_children[i_top],
 499                      i_mode, i_pos );
 500             break;
 501         }
 502     }
 503     GoAndPreparse( p_playlist, i_mode, p_item_cat, p_item_one );
 504
 505     if( i_cat ) *i_cat = p_item_cat->i_id;
 506     if( i_one ) *i_one = p_item_one->i_id;
 507
 508     PL_UNLOCK_IF( !b_locked );
 509     return VLC_SUCCESS;
 510 }
 511
 512 /**
 513  * Add an input item to a given node
 514  *
 515  * \param p_playlist the playlist to add into
 516  * \param p_input the input item to add
 517  * \param p_parent the parent item to add into
 518  * \param i_mode the mode used when addin
 519  * \param i_pos the position in the playlist where to add. If this is
 520  *        PLAYLIST_END the item will be added at the end of the playlist
 521  *        regardless of its size
 522  * \param b_locked TRUE if the playlist is locked
 523  * \return the new playlist item
 524  */
 525 playlist_item_t * playlist_NodeAddInput( playlist_t *p_playlist,
 526                                          input_item_t *p_input,
 527                                          playlist_item_t *p_parent,
 528                                          int i_mode, int i_pos,
 529                                          bool b_locked )
 530 {
 531     playlist_item_t *p_item;
 532     assert( p_input );
 533     assert( p_parent && p_parent->i_children != -1 );
 534
 535     if( p_playlist->b_die )
 536         return NULL;
 537     PL_LOCK_IF( !b_locked );
 538
 539     p_item = playlist_ItemNewFromInput( p_playlist, p_input );
 540     if( p_item == NULL ) return NULL;
 541     AddItem( p_playlist, p_item, p_parent, i_mode, i_pos );
 542
 543     PL_UNLOCK_IF( !b_locked );
 544
 545     return p_item;
 546 }
 547
 548 /*****************************************************************************
 549  * Playlist item misc operations
 550  *****************************************************************************/
 551
 552 /**
 553  * Item to node
 554  *
 555  * Transform an item to a node. Return the node in the category tree, or NULL
 556  * if not found there
 557  * This function must be entered without the playlist lock
 558  * \param p_playlist the playlist object
 559  * \param p_item the item to transform
 560  * \param b_locked TRUE if the playlist is locked
 561  * \return the item transform in a node
 562  */
 563 static playlist_item_t *ItemToNode( playlist_t *p_playlist,
 564                                     playlist_item_t *p_item,
 565                                     bool b_locked )
 566 {
 567
 568     playlist_item_t *p_item_in_category;
 569     /* What we do
 570      * Find the input in CATEGORY.
 571      *  - If we find it
 572      *    - change it to node
 573      *    - we'll return it at the end
 574      *    - If we are a direct child of onelevel root, change to node, else
 575      *      delete the input from ONELEVEL
 576      *  - If we don't find it, just change to node (we are probably in VLM)
 577      *    and return NULL
 578      *
 579      * If we were in ONELEVEL, we thus retrieve the node in CATEGORY (will be
 580      * useful for later BothAddInput )
 581      */
 582
 583     PL_LOCK_IF( !b_locked );
 584
 585     /* Fast track the media library, no time to loose */
 586     if( p_item == p_playlist->p_ml_category ) {
 587         PL_UNLOCK_IF( !b_locked );
 588         return p_item;
 589     }
 590
 591     /** \todo First look if we don't already have it */
 592     p_item_in_category = playlist_ItemFindFromInputAndRoot(
 593                                             p_playlist, p_item->p_input,
 594                                             p_playlist->p_root_category,
 595                                             true );
 596
 597     if( p_item_in_category )
 598     {
 599         playlist_item_t *p_item_in_one = playlist_ItemFindFromInputAndRoot(
 600                                             p_playlist, p_item->p_input,
 601                                             p_playlist->p_root_onelevel,
 602                                             true );
 603         assert( p_item_in_one );
 604
 605         /* We already have it, and there is nothing more to do */
 606         ChangeToNode( p_playlist, p_item_in_category );
 607
 608         /* Item in one is a root, change it to node */
 609         if( p_item_in_one->p_parent == p_playlist->p_root_onelevel )
 610             ChangeToNode( p_playlist, p_item_in_one );
 611         else
 612         {
 613             playlist_item_t *p_status_item = get_current_status_item( p_playlist );
 614             playlist_item_t *p_status_node = get_current_status_node( p_playlist );
 615             if( p_item_in_one == p_status_item )
 616             {
 617                 /* We're deleting the current playlist item. Update
 618                  * the playlist object to point at the previous item
 619                  * so the playlist won't be restarted */
 620                 playlist_item_t *p_prev_status_item = NULL;
 621                 int i = 0;
 622                 while( i < p_status_node->i_children &&
 623                        p_status_node->pp_children[i] != p_status_item )
 624                 {
 625                     p_prev_status_item = p_status_node->pp_children[i];
 626                     i++;
 627                 }
 628                 if( i == p_status_node->i_children )
 629                     p_prev_status_item = NULL;
 630                 if( p_prev_status_item )
 631                     set_current_status_item( p_playlist, p_prev_status_item );
 632             }
 633             DeleteFromInput( p_playlist, p_item_in_one->p_input,
 634                              p_playlist->p_root_onelevel, false );
 635         }
 636         pl_priv(p_playlist)->b_reset_currently_playing = true;
 637         vlc_cond_signal( &pl_priv(p_playlist)->signal );
 638         var_SetAddress( p_playlist, "item-change", p_item_in_category->p_input );
 639         var_SetAddress( p_playlist, "leaf-to-parent", p_item_in_category->p_input );
 640         PL_UNLOCK_IF( !b_locked );
 641         return p_item_in_category;
 642     }
 643     else
 644     {
 645         ChangeToNode( p_playlist, p_item );
 646         PL_UNLOCK_IF( !b_locked );
 647         return p_item;
 648     }
 649 }
 650
 651 /**
 652  * Find an item within a root, given its input id.
 653  *
 654  * \param p_playlist the playlist object
 655  * \param p_item the input item
 656  * \param p_root root playlist item
 657  * \param b_items_only TRUE if we want the item himself
 658  * \return the first found item, or NULL if not found
 659  */
 660 playlist_item_t *playlist_ItemFindFromInputAndRoot( playlist_t *p_playlist,
 661                                                     input_item_t *p_item,
 662                                                     playlist_item_t *p_root,
 663                                                     bool b_items_only )
 664 {
 665     int i;
 666     for( i = 0 ; i< p_root->i_children ; i++ )
 667     {
 668         if( ( b_items_only ? p_root->pp_children[i]->i_children == -1 : 1 ) &&
 669             p_root->pp_children[i]->p_input == p_item )
 670         {
 671             return p_root->pp_children[i];
 672         }
 673         else if( p_root->pp_children[i]->i_children >= 0 )
 674         {
 675             playlist_item_t *p_search =
 676                  playlist_ItemFindFromInputAndRoot( p_playlist, p_item,
 677                                                     p_root->pp_children[i],
 678                                                     b_items_only );
 679             if( p_search ) return p_search;
 680         }
 681     }
 682     return NULL;
 683 }
 684
 685
 686 static int ItemIndex ( playlist_item_t *p_item )
 687 {
 688     for( int i = 0; i < p_item->p_parent->i_children; i++ )
 689         if( p_item->p_parent->pp_children[i] == p_item ) return i;
 690     return -1;
 691 }
 692
 693 /**
 694  * Moves an item
 695  *
 696  * This function must be entered with the playlist lock
 697  *
 698  * \param p_playlist the playlist
 699  * \param p_item the item to move
 700  * \param p_node the new parent of the item
 701  * \param i_newpos the new position under this new parent
 702  * \return VLC_SUCCESS or an error
 703  */
 704 int playlist_TreeMove( playlist_t * p_playlist, playlist_item_t *p_item,
 705                        playlist_item_t *p_node, int i_newpos )
 706 {
 707     PL_ASSERT_LOCKED;
 708
 709     if( p_node->i_children == -1 ) return VLC_EGENERIC;
 710
 711     playlist_item_t *p_detach = p_item->p_parent;
 712     int i_index = ItemIndex( p_item );
 713
 714     REMOVE_ELEM( p_detach->pp_children, p_detach->i_children, i_index );
 715
 716     if( p_detach == p_node && i_index < i_newpos )
 717         i_newpos--;
 718
 719     INSERT_ELEM( p_node->pp_children, p_node->i_children, i_newpos, p_item );
 720     p_item->p_parent = p_node;
 721
 722     pl_priv( p_playlist )->b_reset_currently_playing = true;
 723     vlc_cond_signal( &pl_priv( p_playlist )->signal );
 724     return VLC_SUCCESS;
 725 }
 726
 727 /**
 728  * Moves an array of items
 729  *
 730  * This function must be entered with the playlist lock
 731  *
 732  * \param p_playlist the playlist
 733  * \param i_items the number of indexes to move
 734  * \param pp_items the array of indexes to move
 735  * \param p_node the target node
 736  * \param i_newpos the target position under this node
 737  * \return VLC_SUCCESS or an error
 738  */
 739 int playlist_TreeMoveMany( playlist_t *p_playlist,
 740                             int i_items, playlist_item_t **pp_items,
 741                             playlist_item_t *p_node, int i_newpos )
 742 {
 743     PL_ASSERT_LOCKED;
 744
 745     if ( p_node->i_children == -1 ) return VLC_EGENERIC;
 746
 747     int i;
 748     for( i = 0; i < i_items; i++ )
 749     {
 750         playlist_item_t *p_item = pp_items[i];
 751         int i_index = ItemIndex( p_item );
 752         playlist_item_t *p_parent = p_item->p_parent;
 753         REMOVE_ELEM( p_parent->pp_children, p_parent->i_children, i_index );
 754         if ( p_parent == p_node && i_index < i_newpos ) i_newpos--;
 755     }
 756     for( i = i_items - 1; i >= 0; i-- )
 757     {
 758         playlist_item_t *p_item = pp_items[i];
 759         INSERT_ELEM( p_node->pp_children, p_node->i_children, i_newpos, p_item );
 760         p_item->p_parent = p_node;
 761     }
 762
 763     pl_priv( p_playlist )->b_reset_currently_playing = true;
 764     vlc_cond_signal( &pl_priv( p_playlist )->signal );
 765     return VLC_SUCCESS;
 766 }
 767
 768 /**
 769  * Send a notification that an item has been added to a node
 770  *
 771  * \param p_playlist the playlist object
 772  * \param i_item_id id of the item added
 773  * \param i_node_id id of the node in wich the item was added
 774  * \param b_signal TRUE if the function must send a signal
 775  * \return nothing
 776  */
 777 void playlist_SendAddNotify( playlist_t *p_playlist, int i_item_id,
 778                              int i_node_id, bool b_signal )
 779 {
 780     playlist_private_t *p_sys = pl_priv(p_playlist);
 781     PL_ASSERT_LOCKED;
 782
 783     p_sys->b_reset_currently_playing = true;
 784     if( b_signal )
 785         vlc_cond_signal( &p_sys->signal );
 786
 787     playlist_add_t add;
 788     add.i_item = i_item_id;
 789     add.i_node = i_node_id;
 790
 791     vlc_value_t val;
 792     val.p_address = &add;
 793
 794     var_Set( p_playlist, "playlist-item-append", val );
 795 }
 796
 797 /***************************************************************************
 798  * The following functions are local
 799  ***************************************************************************/
 800
 801 /* Enqueue an item for preparsing, and play it, if needed */
 802 static void GoAndPreparse( playlist_t *p_playlist, int i_mode,
 803                            playlist_item_t *p_item_cat,
 804                            playlist_item_t *p_item_one )
 805 {
 806     PL_ASSERT_LOCKED;
 807     if( (i_mode & PLAYLIST_GO ) )
 808     {
 809         playlist_item_t *p_parent = p_item_one;
 810         playlist_item_t *p_toplay = NULL;
 811         while( p_parent )
 812         {
 813             if( p_parent == p_playlist->p_root_category )
 814             {
 815                 p_toplay = p_item_cat; break;
 816             }
 817             else if( p_parent == p_playlist->p_root_onelevel )
 818             {
 819                 p_toplay = p_item_one; break;
 820             }
 821             p_parent = p_parent->p_parent;
 822         }
 823         assert( p_toplay );
 824         pl_priv(p_playlist)->request.b_request = true;
 825         pl_priv(p_playlist)->request.i_skip = 0;
 826         pl_priv(p_playlist)->request.p_item = p_toplay;
 827         if( pl_priv(p_playlist)->p_input )
 828             input_Stop( pl_priv(p_playlist)->p_input, true );
 829         pl_priv(p_playlist)->request.i_status = PLAYLIST_RUNNING;
 830         vlc_cond_signal( &pl_priv(p_playlist)->signal );
 831     }
 832     /* Preparse if PREPARSE or SPREPARSE & not enough meta */
 833     char *psz_artist = input_item_GetArtist( p_item_cat->p_input );
 834     char *psz_album = input_item_GetAlbum( p_item_cat->p_input );
 835     if( pl_priv(p_playlist)->b_auto_preparse &&
 836           (i_mode & PLAYLIST_PREPARSE ||
 837           ( i_mode & PLAYLIST_SPREPARSE &&
 838             ( EMPTY_STR( psz_artist ) || ( EMPTY_STR( psz_album ) ) )
 839           ) ) )
 840         playlist_PreparseEnqueue( p_playlist, p_item_cat->p_input, pl_Locked );
 841     /* If we already have it, signal it */
 842     else if( !EMPTY_STR( psz_artist ) && !EMPTY_STR( psz_album ) )
 843         input_item_SetPreparsed( p_item_cat->p_input, true );
 844     free( psz_artist );
 845     free( psz_album );
 846 }
 847
 848 /* Add the playlist item to the requested node and fire a notification */
 849 static void AddItem( playlist_t *p_playlist, playlist_item_t *p_item,
 850                      playlist_item_t *p_node, int i_mode, int i_pos )
 851 {
 852     PL_ASSERT_LOCKED;
 853     ARRAY_APPEND(p_playlist->items, p_item);
 854     ARRAY_APPEND(p_playlist->all_items, p_item);
 855
 856     if( i_pos == PLAYLIST_END )
 857         playlist_NodeAppend( p_playlist, p_item, p_node );
 858     else
 859         playlist_NodeInsert( p_playlist, p_item, p_node, i_pos );
 860
 861     if( !pl_priv(p_playlist)->b_doing_ml )
 862         playlist_SendAddNotify( p_playlist, p_item->i_id, p_node->i_id,
 863                                  !( i_mode & PLAYLIST_NO_REBUILD ) );
 864 }
 865
 866 /* Actually convert an item to a node */
 867 static void ChangeToNode( playlist_t *p_playlist, playlist_item_t *p_item )
 868 {
 869     int i;
 870     if( p_item->i_children == -1 )
 871         p_item->i_children = 0;
 872
 873     /* Remove it from the array of available items */
 874     ARRAY_BSEARCH( p_playlist->items,->i_id, int, p_item->i_id, i );
 875     if( i != -1 )
 876         ARRAY_REMOVE( p_playlist->items, i );
 877 }
 878
 879 /* Do the actual removal */
 880 static int DeleteInner( playlist_t * p_playlist, playlist_item_t *p_item,
 881                         bool b_stop )
 882 {
 883     int i;
 884     int i_id = p_item->i_id;
 885     PL_ASSERT_LOCKED;
 886
 887     if( p_item->i_children > -1 )
 888     {
 889         return playlist_NodeDelete( p_playlist, p_item, true, false );
 890     }
 891     pl_priv(p_playlist)->b_reset_currently_playing = true;
 892     var_SetInteger( p_playlist, "playlist-item-deleted", i_id );
 893
 894     /* Remove the item from the bank */
 895     ARRAY_BSEARCH( p_playlist->all_items,->i_id, int, i_id, i );
 896     if( i != -1 )
 897         ARRAY_REMOVE( p_playlist->all_items, i );
 898
 899     ARRAY_BSEARCH( p_playlist->items,->i_id, int, i_id, i );
 900     if( i != -1 )
 901         ARRAY_REMOVE( p_playlist->items, i );
 902
 903     /* Check if it is the current item */
 904     if( get_current_status_item( p_playlist ) == p_item )
 905     {
 906         /* Stop it if we have to */
 907         if( b_stop )
 908         {
 909             playlist_Control( p_playlist, PLAYLIST_STOP, pl_Locked );
 910             msg_Info( p_playlist, "stopping playback" );
 911         }
 912         /* In any case, this item can't be the next one to be played ! */
 913         set_current_status_item( p_playlist, NULL );
 914     }
 915
 916     ARRAY_BSEARCH( p_playlist->current,->i_id, int, i_id, i );
 917     if( i != -1 )
 918         ARRAY_REMOVE( p_playlist->current, i );
 919
 920     PL_DEBUG( "deleting item `%s'", p_item->p_input->psz_name );
 921
 922     /* Remove the item from its parent */
 923     playlist_NodeRemoveItem( p_playlist, p_item, p_item->p_parent );
 924
 925     playlist_ItemRelease( p_item );
 926
 927     return VLC_SUCCESS;
 928 }