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 * );
  37 static void ChangeToNode( playlist_t *p_playlist, playlist_item_t *p_item );
  38
  39 static playlist_item_t *ItemToNode( playlist_t *, playlist_item_t *, bool );
  40
  41 static int RecursiveAddIntoParent (
  42                 playlist_t *p_playlist, playlist_item_t *p_parent,
  43                 input_item_node_t *p_node, int i_pos, bool b_flat,
  44                 playlist_item_t **pp_first_leaf );
  45
  46 /*****************************************************************************
  47  * An input item has gained subitems (Event Callback)
  48  *****************************************************************************/
  49
  50 static void input_item_add_subitem_tree ( const vlc_event_t * p_event,
  51                                           void * user_data )
  52 {
  53     input_item_t *p_input = p_event->p_obj;
  54     playlist_t *p_playlist = (( playlist_item_t* ) user_data)->p_playlist;
  55     input_item_node_t *p_new_root = p_event->u.input_item_subitem_tree_added.p_root;
  56
  57     PL_LOCK;
  58
  59     playlist_item_t *p_item =
  60         playlist_ItemGetByInput( p_playlist, p_input );
  61
  62     assert( p_item != NULL );
  63     playlist_item_t *p_parent = p_item->p_parent;
  64     assert( p_parent != NULL );
  65
  66     bool b_play = var_CreateGetBool( p_playlist, "playlist-autostart" ) &&
  67                   get_current_status_item( p_playlist ) == p_item;
  68     bool b_stop = b_play && p_item->i_flags & PLAYLIST_SUBITEM_STOP_FLAG;
  69     p_item->i_flags &= ~PLAYLIST_SUBITEM_STOP_FLAG;
  70
  71     int pos = 0;
  72     for( int i = 0; i < p_parent->i_children; i++ )
  73     {
  74         if( p_parent->pp_children[i] == p_item )
  75         {
  76             pos = i;
  77             break;
  78         }
  79     }
  80
  81     bool b_flat = false;
  82     playlist_item_t *p_up = p_item;
  83     while( p_up->p_parent )
  84     {
  85         if( p_up->p_parent == p_playlist->p_playing ||
  86             p_up->p_parent == p_playlist->p_media_library )
  87         {
  88             if( !pl_priv(p_playlist)->b_tree ) b_flat = true;
  89             break;
  90         }
  91         p_up = p_up->p_parent;
  92     }
  93     if( b_flat )
  94     {
  95         playlist_DeleteItem( p_playlist, p_item, true );
  96         p_item = playlist_InsertInputItemTree( p_playlist, p_parent,
  97                                                p_new_root, pos, true );
  98     }
  99     else
 100         p_item = playlist_InsertInputItemTree( p_playlist, p_item,
 101                                                p_new_root, 0, false );
 102
 103
 104     if( b_stop )
 105     {
 106         PL_UNLOCK;
 107         playlist_Stop( p_playlist );
 108         return;
 109     }
 110     else if( b_play )
 111     {
 112         playlist_Control( p_playlist, PLAYLIST_VIEWPLAY,
 113                           pl_Locked, get_current_status_node( p_playlist ), p_item );
 114     }
 115
 116     PL_UNLOCK;
 117 }
 118 /*****************************************************************************
 119  * An input item's meta or duration has changed (Event Callback)
 120  *****************************************************************************/
 121 static void input_item_changed( const vlc_event_t * p_event,
 122                                 void * user_data )
 123 {
 124     playlist_item_t *p_item = user_data;
 125     VLC_UNUSED( p_event );
 126     var_SetAddress( p_item->p_playlist, "item-change", p_item->p_input );
 127 }
 128
 129 /*****************************************************************************
 130  * Listen to vlc_InputItemAddSubItem event
 131  *****************************************************************************/
 132 static void install_input_item_observer( playlist_item_t * p_item )
 133 {
 134     vlc_event_manager_t * p_em = &p_item->p_input->event_manager;
 135     vlc_event_attach( p_em, vlc_InputItemSubItemTreeAdded,
 136                       input_item_add_subitem_tree, p_item );
 137     vlc_event_attach( p_em, vlc_InputItemDurationChanged,
 138                       input_item_changed, p_item );
 139     vlc_event_attach( p_em, vlc_InputItemMetaChanged,
 140                       input_item_changed, p_item );
 141     vlc_event_attach( p_em, vlc_InputItemNameChanged,
 142                       input_item_changed, p_item );
 143     vlc_event_attach( p_em, vlc_InputItemInfoChanged,
 144                       input_item_changed, p_item );
 145     vlc_event_attach( p_em, vlc_InputItemErrorWhenReadingChanged,
 146                       input_item_changed, p_item );
 147 }
 148
 149 static void uninstall_input_item_observer( playlist_item_t * p_item )
 150 {
 151     vlc_event_manager_t * p_em = &p_item->p_input->event_manager;
 152     vlc_event_detach( p_em, vlc_InputItemSubItemTreeAdded,
 153                       input_item_add_subitem_tree, p_item );
 154     vlc_event_detach( p_em, vlc_InputItemMetaChanged,
 155                       input_item_changed, p_item );
 156     vlc_event_detach( p_em, vlc_InputItemDurationChanged,
 157                       input_item_changed, p_item );
 158     vlc_event_detach( p_em, vlc_InputItemNameChanged,
 159                       input_item_changed, p_item );
 160     vlc_event_detach( p_em, vlc_InputItemInfoChanged,
 161                       input_item_changed, p_item );
 162     vlc_event_detach( p_em, vlc_InputItemErrorWhenReadingChanged,
 163                       input_item_changed, p_item );
 164 }
 165
 166 /*****************************************************************************
 167  * Playlist item creation
 168  *****************************************************************************/
 169 playlist_item_t *playlist_ItemNewFromInput( playlist_t *p_playlist,
 170                                               input_item_t *p_input )
 171 {
 172     playlist_item_t* p_item = malloc( sizeof( playlist_item_t ) );
 173     if( !p_item )
 174         return NULL;
 175
 176     assert( p_input );
 177
 178     p_item->p_input = p_input;
 179     vlc_gc_incref( p_item->p_input );
 180
 181     p_item->i_id = ++pl_priv(p_playlist)->i_last_playlist_id;
 182
 183     p_item->p_parent = NULL;
 184     p_item->i_children = -1;
 185     p_item->pp_children = NULL;
 186     p_item->i_flags = 0;
 187     p_item->p_playlist = p_playlist;
 188
 189     install_input_item_observer( p_item );
 190
 191     return p_item;
 192 }
 193
 194 /***************************************************************************
 195  * Playlist item destruction
 196  ***************************************************************************/
 197
 198 /**
 199  * Release an item
 200  *
 201  * \param p_item item to delete
 202  * \return VLC_SUCCESS
 203 */
 204 int playlist_ItemRelease( playlist_item_t *p_item )
 205 {
 206     /* For the assert */
 207     playlist_t *p_playlist = p_item->p_playlist;
 208     PL_ASSERT_LOCKED;
 209
 210     /* Surprise, we can't actually do more because we
 211      * don't do refcounting, or eauivalent.
 212      * Because item are not only accessed by their id
 213      * using playlist_item outside the PL_LOCK isn't safe.
 214      * Most of the modules does that.
 215      *
 216      * Who wants to add proper memory management? */
 217     uninstall_input_item_observer( p_item );
 218     ARRAY_APPEND( pl_priv(p_playlist)->items_to_delete, p_item);
 219     return VLC_SUCCESS;
 220 }
 221
 222 /**
 223  * Delete input item
 224  *
 225  * Remove an input item when it appears from a root playlist item
 226  * \param p_playlist playlist object
 227  * \param p_input the input to delete
 228  * \param p_root root playlist item
 229  * \param b_do_stop must stop or not the playlist
 230  * \return VLC_SUCCESS or VLC_EGENERIC
 231 */
 232 static int DeleteFromInput( playlist_t *p_playlist, input_item_t *p_input,
 233                             playlist_item_t *p_root, bool b_do_stop )
 234 {
 235     PL_ASSERT_LOCKED;
 236     playlist_item_t *p_item = playlist_ItemFindFromInputAndRoot(
 237         p_playlist, p_input, p_root, false );
 238     if( !p_item ) return VLC_EGENERIC;
 239     return playlist_DeleteItem( p_playlist, p_item, b_do_stop );
 240 }
 241
 242 /**
 243  * Delete input item
 244  *
 245  * Remove an input item when it appears from a root playlist item
 246  * \param p_playlist playlist object
 247  * \param p_input the input to delete
 248  * \param p_root root playlist item
 249  * \param b_locked TRUE if the playlist is locked
 250  * \return VLC_SUCCESS or VLC_EGENERIC
 251  */
 252 int playlist_DeleteFromInputInParent( playlist_t *p_playlist,
 253                                       input_item_t *p_item,
 254                                       playlist_item_t *p_root, bool b_locked )
 255 {
 256     int i_ret;
 257     PL_LOCK_IF( !b_locked );
 258     i_ret = DeleteFromInput( p_playlist, p_item, p_root, true );
 259     PL_UNLOCK_IF( !b_locked );
 260     return i_ret;
 261 }
 262
 263 /**
 264  * Delete from input
 265  *
 266  * Search anywhere in playlist for an an input item and delete it
 267  * \param p_playlist playlist object
 268  * \param p_input the input to delete
 269  * \param b_locked TRUE if the playlist is locked
 270  * \return VLC_SUCCESS or VLC_ENOITEM
 271  */
 272 int playlist_DeleteFromInput( playlist_t *p_playlist, input_item_t *p_input,
 273                               bool b_locked )
 274 {
 275     int i_ret;
 276     PL_LOCK_IF( !b_locked );
 277     i_ret = DeleteFromInput( p_playlist, p_input,
 278                              p_playlist->p_root, true );
 279     PL_UNLOCK_IF( !b_locked );
 280     return ( i_ret == VLC_SUCCESS ? VLC_SUCCESS : VLC_ENOITEM );
 281 }
 282
 283 /**
 284  * Clear the playlist
 285  *
 286  * \param p_playlist playlist object
 287  * \param b_locked TRUE if the playlist is locked
 288  * \return nothing
 289  */
 290 void playlist_Clear( playlist_t * p_playlist, bool b_locked )
 291 {
 292     PL_LOCK_IF( !b_locked );
 293     playlist_NodeEmpty( p_playlist, p_playlist->p_playing, true );
 294     PL_UNLOCK_IF( !b_locked );
 295 }
 296
 297 /**
 298  * Delete playlist item
 299  *
 300  * Remove a playlist item from the playlist, given its id
 301  * This function is to be used only by the playlist
 302  * \param p_playlist playlist object
 303  * \param i_id id of the item do delete
 304  * \return VLC_SUCCESS or an error
 305  */
 306 int playlist_DeleteFromItemId( playlist_t *p_playlist, int i_id )
 307 {
 308     PL_ASSERT_LOCKED;
 309     playlist_item_t *p_item = playlist_ItemGetById( p_playlist, i_id );
 310     if( !p_item ) return VLC_EGENERIC;
 311     return playlist_DeleteItem( p_playlist, p_item, true );
 312 }
 313
 314 /***************************************************************************
 315  * Playlist item addition
 316  ***************************************************************************/
 317 /**
 318  * Playlist add
 319  *
 320  * Add an item to the playlist or the media library
 321  * \param p_playlist the playlist to add into
 322  * \param psz_uri the mrl to add to the playlist
 323  * \param psz_name a text giving a name or description of this item
 324  * \param i_mode the mode used when adding
 325  * \param i_pos the position in the playlist where to add. If this is
 326  *        PLAYLIST_END the item will be added at the end of the playlist
 327  *        regardless of its size
 328  * \param b_playlist TRUE for playlist, FALSE for media library
 329  * \param b_locked TRUE if the playlist is locked
 330  * \return VLC_SUCCESS or a VLC error code
 331  */
 332 int playlist_Add( playlist_t *p_playlist, const char *psz_uri,
 333                   const char *psz_name, int i_mode, int i_pos,
 334                   bool b_playlist, bool b_locked )
 335 {
 336     return playlist_AddExt( p_playlist, psz_uri, psz_name,
 337                             i_mode, i_pos, -1, 0, NULL, 0, b_playlist, b_locked );
 338 }
 339
 340 /**
 341  * Add a MRL into the playlist or the media library, duration and options given
 342  *
 343  * \param p_playlist the playlist to add into
 344  * \param psz_uri the mrl to add to the playlist
 345  * \param psz_name a text giving a name or description of this item
 346  * \param i_mode the mode used when adding
 347  * \param i_pos the position in the playlist where to add. If this is
 348  *        PLAYLIST_END the item will be added at the end of the playlist
 349  *        regardless of its size
 350  * \param i_duration length of the item in milliseconds.
 351  * \param i_options the number of options
 352  * \param ppsz_options an array of options
 353  * \param i_option_flags options flags
 354  * \param b_playlist TRUE for playlist, FALSE for media library
 355  * \param b_locked TRUE if the playlist is locked
 356  * \return VLC_SUCCESS or a VLC error code
 357 */
 358 int playlist_AddExt( playlist_t *p_playlist, const char * psz_uri,
 359                      const char *psz_name, int i_mode, int i_pos,
 360                      mtime_t i_duration,
 361                      int i_options, const char *const *ppsz_options,
 362                      unsigned i_option_flags,
 363                      bool b_playlist, bool b_locked )
 364 {
 365     int i_ret;
 366     input_item_t *p_input;
 367
 368     p_input = input_item_NewExt( p_playlist, psz_uri, psz_name,
 369                                  i_options, ppsz_options, i_option_flags,
 370                                  i_duration );
 371     if( p_input == NULL )
 372         return VLC_ENOMEM;
 373     i_ret = playlist_AddInput( p_playlist, p_input, i_mode, i_pos, b_playlist,
 374                                b_locked );
 375     vlc_gc_decref( p_input );
 376     return i_ret;
 377 }
 378
 379 /**
 380  * Add an input item to the playlist node
 381  *
 382  * \param p_playlist the playlist to add into
 383  * \param p_input the input item to add
 384  * \param i_mode the mode used when adding
 385  * \param i_pos the position in the playlist where to add. If this is
 386  *        PLAYLIST_END the item will be added at the end of the playlist
 387  *        regardless of its size
 388  * \param b_playlist TRUE for playlist, FALSE for media library
 389  * \param b_locked TRUE if the playlist is locked
 390  * \return VLC_SUCCESS or VLC_ENOMEM or VLC_EGENERIC
 391 */
 392 int playlist_AddInput( playlist_t* p_playlist, input_item_t *p_input,
 393                        int i_mode, int i_pos, bool b_playlist,
 394                        bool b_locked )
 395 {
 396     playlist_item_t *p_item;
 397     if( p_playlist->b_die ) return VLC_EGENERIC;
 398     if( !pl_priv(p_playlist)->b_doing_ml )
 399         PL_DEBUG( "adding item `%s' ( %s )", p_input->psz_name,
 400                                              p_input->psz_uri );
 401
 402     PL_LOCK_IF( !b_locked );
 403
 404     p_item = playlist_ItemNewFromInput( p_playlist, p_input );
 405     if( p_item == NULL ) return VLC_ENOMEM;
 406     AddItem( p_playlist, p_item,
 407              b_playlist ? p_playlist->p_playing :
 408                           p_playlist->p_media_library , i_mode, i_pos );
 409
 410     GoAndPreparse( p_playlist, i_mode, p_item );
 411
 412     PL_UNLOCK_IF( !b_locked );
 413     return VLC_SUCCESS;
 414 }
 415
 416 /**
 417  * Add an input item to a given node
 418  *
 419  * \param p_playlist the playlist to add into
 420  * \param p_input the input item to add
 421  * \param p_parent the parent item to add into
 422  * \param i_mode the mode used when addin
 423  * \param i_pos the position in the playlist where to add. If this is
 424  *        PLAYLIST_END the item will be added at the end of the playlist
 425  *        regardless of its size
 426  * \param b_locked TRUE if the playlist is locked
 427  * \return the new playlist item
 428  */
 429 playlist_item_t * playlist_NodeAddInput( playlist_t *p_playlist,
 430                                          input_item_t *p_input,
 431                                          playlist_item_t *p_parent,
 432                                          int i_mode, int i_pos,
 433                                          bool b_locked )
 434 {
 435     playlist_item_t *p_item;
 436     assert( p_input );
 437     assert( p_parent && p_parent->i_children != -1 );
 438
 439     if( p_playlist->b_die )
 440         return NULL;
 441     PL_LOCK_IF( !b_locked );
 442
 443     p_item = playlist_ItemNewFromInput( p_playlist, p_input );
 444     if( p_item == NULL ) return NULL;
 445     AddItem( p_playlist, p_item, p_parent, i_mode, i_pos );
 446
 447     PL_UNLOCK_IF( !b_locked );
 448
 449     return p_item;
 450 }
 451
 452 /**
 453  * Insert a tree of input items into a given playlist node
 454  *
 455  * \param p_playlist the playlist to insert into
 456  * \param p_parent the receiving playlist node (can be an item)
 457  * \param p_node the root of input item tree,
 458           only it's contents will be inserted
 459  * \param i_pos the position in the playlist where to insert. If this is
 460  *        PLAYLIST_END the items will be added at the end of the playlist
 461  *        regardless of its size
 462  * \param b_flat TRUE if the new tree contents should be flattened into a list
 463  * \return the first new leaf inserted (in playing order)
 464  */
 465 playlist_item_t *playlist_InsertInputItemTree (
 466     playlist_t *p_playlist, playlist_item_t *p_parent,
 467     input_item_node_t *p_node, int i_pos, bool b_flat )
 468 {
 469   playlist_item_t *p_first_leaf = NULL;
 470   RecursiveAddIntoParent ( p_playlist, p_parent, p_node, i_pos, b_flat, &p_first_leaf );
 471   return p_first_leaf;
 472 }
 473
 474 /*****************************************************************************
 475  * Playlist item misc operations
 476  *****************************************************************************/
 477
 478 /**
 479  * Item to node
 480  *
 481  * Transform an item to a node. Return the node in the category tree, or NULL
 482  * if not found there
 483  * This function must be entered without the playlist lock
 484  * \param p_playlist the playlist object
 485  * \param p_item the item to transform
 486  * \param b_locked TRUE if the playlist is locked
 487  * \return the item transform in a node
 488  */
 489 static playlist_item_t *ItemToNode( playlist_t *p_playlist,
 490                                     playlist_item_t *p_item,
 491                                     bool b_locked )
 492 {
 493     PL_LOCK_IF( !b_locked );
 494
 495     assert( p_item->p_parent );
 496
 497     bool b_flat = false;
 498     playlist_item_t *p_up = p_item;
 499     while( p_up->p_parent )
 500     {
 501         if( p_up->p_parent == p_playlist->p_playing ||
 502             p_up->p_parent == p_playlist->p_media_library )
 503         {
 504             if( !pl_priv(p_playlist)->b_tree ) b_flat = true;
 505             break;
 506         }
 507         p_up = p_up->p_parent;
 508     }
 509
 510     if( !b_flat )
 511     {
 512         ChangeToNode( p_playlist, p_item );
 513         if( p_up == p_playlist->p_root )
 514             var_SetAddress( p_playlist, "item-change", p_item->p_input );
 515         PL_UNLOCK_IF( !b_locked );
 516         return p_item;
 517     }
 518     else
 519     {
 520         playlist_item_t *p_status_item = get_current_status_item( p_playlist );
 521         playlist_item_t *p_status_node = get_current_status_node( p_playlist );
 522         if( p_item == p_status_item )
 523         {
 524             /* We're deleting the current playlist item. Update
 525               * the playlist object to point at the previous item
 526               * so the playlist won't be restarted */
 527             playlist_item_t *p_prev_status_item = NULL;
 528             int i = 0;
 529             while( i < p_status_node->i_children &&
 530                     p_status_node->pp_children[i] != p_status_item )
 531             {
 532                 p_prev_status_item = p_status_node->pp_children[i];
 533                 i++;
 534             }
 535             if( i == p_status_node->i_children )
 536                 p_prev_status_item = NULL;
 537             if( p_prev_status_item )
 538                 set_current_status_item( p_playlist, p_prev_status_item );
 539         }
 540
 541         DeleteFromInput( p_playlist, p_item->p_input,
 542                           p_playlist->p_root, false );
 543
 544         pl_priv(p_playlist)->b_reset_currently_playing = true;
 545         vlc_cond_signal( &pl_priv(p_playlist)->signal );
 546
 547         PL_UNLOCK_IF( !b_locked );
 548         return p_item->p_parent;
 549     }
 550 }
 551
 552 /**
 553  * Find an item within a root, given its input id.
 554  *
 555  * \param p_playlist the playlist object
 556  * \param p_item the input item
 557  * \param p_root root playlist item
 558  * \param b_items_only TRUE if we want the item himself
 559  * \return the first found item, or NULL if not found
 560  */
 561 playlist_item_t *playlist_ItemFindFromInputAndRoot( playlist_t *p_playlist,
 562                                                     input_item_t *p_item,
 563                                                     playlist_item_t *p_root,
 564                                                     bool b_items_only )
 565 {
 566     int i;
 567     for( i = 0 ; i< p_root->i_children ; i++ )
 568     {
 569         if( ( b_items_only ? p_root->pp_children[i]->i_children == -1 : 1 ) &&
 570             p_root->pp_children[i]->p_input == p_item )
 571         {
 572             return p_root->pp_children[i];
 573         }
 574         else if( p_root->pp_children[i]->i_children >= 0 )
 575         {
 576             playlist_item_t *p_search =
 577                  playlist_ItemFindFromInputAndRoot( p_playlist, p_item,
 578                                                     p_root->pp_children[i],
 579                                                     b_items_only );
 580             if( p_search ) return p_search;
 581         }
 582     }
 583     return NULL;
 584 }
 585
 586
 587 static int ItemIndex ( playlist_item_t *p_item )
 588 {
 589     for( int i = 0; i < p_item->p_parent->i_children; i++ )
 590         if( p_item->p_parent->pp_children[i] == p_item ) return i;
 591     return -1;
 592 }
 593
 594 /**
 595  * Moves an item
 596  *
 597  * This function must be entered with the playlist lock
 598  *
 599  * \param p_playlist the playlist
 600  * \param p_item the item to move
 601  * \param p_node the new parent of the item
 602  * \param i_newpos the new position under this new parent
 603  * \return VLC_SUCCESS or an error
 604  */
 605 int playlist_TreeMove( playlist_t * p_playlist, playlist_item_t *p_item,
 606                        playlist_item_t *p_node, int i_newpos )
 607 {
 608     PL_ASSERT_LOCKED;
 609
 610     if( p_node->i_children == -1 ) return VLC_EGENERIC;
 611
 612     playlist_item_t *p_detach = p_item->p_parent;
 613     int i_index = ItemIndex( p_item );
 614
 615     REMOVE_ELEM( p_detach->pp_children, p_detach->i_children, i_index );
 616
 617     if( p_detach == p_node && i_index < i_newpos )
 618         i_newpos--;
 619
 620     INSERT_ELEM( p_node->pp_children, p_node->i_children, i_newpos, p_item );
 621     p_item->p_parent = p_node;
 622
 623     pl_priv( p_playlist )->b_reset_currently_playing = true;
 624     vlc_cond_signal( &pl_priv( p_playlist )->signal );
 625     return VLC_SUCCESS;
 626 }
 627
 628 /**
 629  * Moves an array of items
 630  *
 631  * This function must be entered with the playlist lock
 632  *
 633  * \param p_playlist the playlist
 634  * \param i_items the number of indexes to move
 635  * \param pp_items the array of indexes to move
 636  * \param p_node the target node
 637  * \param i_newpos the target position under this node
 638  * \return VLC_SUCCESS or an error
 639  */
 640 int playlist_TreeMoveMany( playlist_t *p_playlist,
 641                             int i_items, playlist_item_t **pp_items,
 642                             playlist_item_t *p_node, int i_newpos )
 643 {
 644     PL_ASSERT_LOCKED;
 645
 646     if ( p_node->i_children == -1 ) return VLC_EGENERIC;
 647
 648     int i;
 649     for( i = 0; i < i_items; i++ )
 650     {
 651         playlist_item_t *p_item = pp_items[i];
 652         int i_index = ItemIndex( p_item );
 653         playlist_item_t *p_parent = p_item->p_parent;
 654         REMOVE_ELEM( p_parent->pp_children, p_parent->i_children, i_index );
 655         if ( p_parent == p_node && i_index < i_newpos ) i_newpos--;
 656     }
 657     for( i = i_items - 1; i >= 0; i-- )
 658     {
 659         playlist_item_t *p_item = pp_items[i];
 660         INSERT_ELEM( p_node->pp_children, p_node->i_children, i_newpos, p_item );
 661         p_item->p_parent = p_node;
 662     }
 663
 664     pl_priv( p_playlist )->b_reset_currently_playing = true;
 665     vlc_cond_signal( &pl_priv( p_playlist )->signal );
 666     return VLC_SUCCESS;
 667 }
 668
 669 /**
 670  * Send a notification that an item has been added to a node
 671  *
 672  * \param p_playlist the playlist object
 673  * \param i_item_id id of the item added
 674  * \param i_node_id id of the node in wich the item was added
 675  * \param b_signal TRUE if the function must send a signal
 676  * \return nothing
 677  */
 678 void playlist_SendAddNotify( playlist_t *p_playlist, int i_item_id,
 679                              int i_node_id, bool b_signal )
 680 {
 681     playlist_private_t *p_sys = pl_priv(p_playlist);
 682     PL_ASSERT_LOCKED;
 683
 684     p_sys->b_reset_currently_playing = true;
 685     if( b_signal )
 686         vlc_cond_signal( &p_sys->signal );
 687
 688     playlist_add_t add;
 689     add.i_item = i_item_id;
 690     add.i_node = i_node_id;
 691
 692     vlc_value_t val;
 693     val.p_address = &add;
 694
 695     var_Set( p_playlist, "playlist-item-append", val );
 696 }
 697
 698 /***************************************************************************
 699  * The following functions are local
 700  ***************************************************************************/
 701
 702 /* Enqueue an item for preparsing, and play it, if needed */
 703 static void GoAndPreparse( playlist_t *p_playlist, int i_mode,
 704                            playlist_item_t *p_item )
 705 {
 706     PL_ASSERT_LOCKED;
 707     if( (i_mode & PLAYLIST_GO ) )
 708     {
 709         pl_priv(p_playlist)->request.b_request = true;
 710         pl_priv(p_playlist)->request.i_skip = 0;
 711         pl_priv(p_playlist)->request.p_item = p_item;
 712         if( pl_priv(p_playlist)->p_input )
 713             input_Stop( pl_priv(p_playlist)->p_input, true );
 714         pl_priv(p_playlist)->request.i_status = PLAYLIST_RUNNING;
 715         vlc_cond_signal( &pl_priv(p_playlist)->signal );
 716     }
 717     /* Preparse if PREPARSE or SPREPARSE & not enough meta */
 718     char *psz_artist = input_item_GetArtist( p_item->p_input );
 719     char *psz_album = input_item_GetAlbum( p_item->p_input );
 720     if( pl_priv(p_playlist)->b_auto_preparse &&
 721           (i_mode & PLAYLIST_PREPARSE ||
 722           ( i_mode & PLAYLIST_SPREPARSE &&
 723             ( EMPTY_STR( psz_artist ) || ( EMPTY_STR( psz_album ) ) )
 724           ) ) )
 725         playlist_PreparseEnqueue( p_playlist, p_item->p_input, pl_Locked );
 726     /* If we already have it, signal it */
 727     else if( !EMPTY_STR( psz_artist ) && !EMPTY_STR( psz_album ) )
 728         input_item_SetPreparsed( p_item->p_input, true );
 729     free( psz_artist );
 730     free( psz_album );
 731 }
 732
 733 /* Add the playlist item to the requested node and fire a notification */
 734 static void AddItem( playlist_t *p_playlist, playlist_item_t *p_item,
 735                      playlist_item_t *p_node, int i_mode, int i_pos )
 736 {
 737     PL_ASSERT_LOCKED;
 738     ARRAY_APPEND(p_playlist->items, p_item);
 739     ARRAY_APPEND(p_playlist->all_items, p_item);
 740
 741     if( i_pos == PLAYLIST_END )
 742         playlist_NodeAppend( p_playlist, p_item, p_node );
 743     else
 744         playlist_NodeInsert( p_playlist, p_item, p_node, i_pos );
 745
 746     if( !pl_priv(p_playlist)->b_doing_ml )
 747         playlist_SendAddNotify( p_playlist, p_item->i_id, p_node->i_id,
 748                                  !( i_mode & PLAYLIST_NO_REBUILD ) );
 749 }
 750
 751 /* Actually convert an item to a node */
 752 static void ChangeToNode( playlist_t *p_playlist, playlist_item_t *p_item )
 753 {
 754     int i;
 755     if( p_item->i_children == -1 )
 756         p_item->i_children = 0;
 757
 758     /* Remove it from the array of available items */
 759     ARRAY_BSEARCH( p_playlist->items,->i_id, int, p_item->i_id, i );
 760     if( i != -1 )
 761         ARRAY_REMOVE( p_playlist->items, i );
 762 }
 763
 764 /* Do the actual removal */
 765 int playlist_DeleteItem( playlist_t * p_playlist, playlist_item_t *p_item,
 766                         bool b_stop )
 767 {
 768     int i;
 769     int i_id = p_item->i_id;
 770     PL_ASSERT_LOCKED;
 771
 772     if( p_item->i_children > -1 )
 773     {
 774         return playlist_NodeDelete( p_playlist, p_item, true, false );
 775     }
 776
 777     pl_priv(p_playlist)->b_reset_currently_playing = true;
 778     var_SetInteger( p_playlist, "playlist-item-deleted", i_id );
 779
 780     /* Remove the item from the bank */
 781     ARRAY_BSEARCH( p_playlist->all_items,->i_id, int, i_id, i );
 782     if( i != -1 )
 783         ARRAY_REMOVE( p_playlist->all_items, i );
 784
 785     ARRAY_BSEARCH( p_playlist->items,->i_id, int, i_id, i );
 786     if( i != -1 )
 787         ARRAY_REMOVE( p_playlist->items, i );
 788
 789     /* Check if it is the current item */
 790     if( get_current_status_item( p_playlist ) == p_item )
 791     {
 792         /* Stop it if we have to */
 793         if( b_stop )
 794         {
 795             playlist_Control( p_playlist, PLAYLIST_STOP, pl_Locked );
 796             msg_Info( p_playlist, "stopping playback" );
 797         }
 798         /* In any case, this item can't be the next one to be played ! */
 799         set_current_status_item( p_playlist, NULL );
 800     }
 801
 802     ARRAY_BSEARCH( p_playlist->current,->i_id, int, i_id, i );
 803     if( i != -1 )
 804         ARRAY_REMOVE( p_playlist->current, i );
 805
 806     PL_DEBUG( "deleting item `%s'", p_item->p_input->psz_name );
 807
 808     /* Remove the item from its parent */
 809     playlist_NodeRemoveItem( p_playlist, p_item, p_item->p_parent );
 810
 811     playlist_ItemRelease( p_item );
 812
 813     return VLC_SUCCESS;
 814 }
 815
 816 static int RecursiveAddIntoParent (
 817     playlist_t *p_playlist, playlist_item_t *p_parent,
 818     input_item_node_t *p_node, int i_pos, bool b_flat,
 819     playlist_item_t **pp_first_leaf )
 820 {
 821   if( p_parent->i_children == -1 ) ChangeToNode( p_playlist, p_parent );
 822
 823   if( i_pos == PLAYLIST_END ) i_pos = p_parent->i_children;
 824
 825   for( int i = 0; i < p_node->i_children; i++ )
 826   {
 827       playlist_item_t *p_child = NULL;
 828       if( b_flat ? p_node->pp_children[i]->i_children == 0 : 1 )
 829       {
 830           p_child = playlist_NodeAddInput( p_playlist,
 831                                  p_node->pp_children[i]->p_item,
 832                                  p_parent,
 833                                  PLAYLIST_INSERT, i_pos,
 834                                  pl_Locked );
 835           i_pos++;
 836       }
 837       if( p_node->pp_children[i]->i_children > 0 )
 838       {
 839           if( b_flat )
 840           {
 841               i_pos = RecursiveAddIntoParent(
 842                                       p_playlist, p_parent,
 843                                       p_node->pp_children[i], i_pos, true,
 844                                       &p_child );
 845           }
 846           else
 847           {
 848               RecursiveAddIntoParent( p_playlist, p_child,
 849                                       p_node->pp_children[i], 0, false,
 850                                       &p_child );
 851           }
 852       }
 853       assert( p_child != NULL );
 854       if( i == 0 ) *pp_first_leaf = p_child;
 855   }
 856   return i_pos;
 857 }