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 <vlc_rand.h>
  32 #include "playlist_internal.h"
  33
  34 static void AddItem( playlist_t *p_playlist, playlist_item_t *p_item,
  35                      playlist_item_t *p_node, int i_mode, int i_pos );
  36 static void GoAndPreparse( playlist_t *p_playlist, int i_mode,
  37                            playlist_item_t * );
  38 static void ChangeToNode( playlist_t *p_playlist, playlist_item_t *p_item );
  39
  40 static int RecursiveAddIntoParent (
  41                 playlist_t *p_playlist, playlist_item_t *p_parent,
  42                 input_item_node_t *p_node, int i_pos, bool b_flat,
  43                 playlist_item_t **pp_first_leaf );
  44 static int RecursiveInsertCopy (
  45                 playlist_t *p_playlist, playlist_item_t *p_item,
  46                 playlist_item_t *p_parent, int i_pos, bool b_flat );
  47
  48 /*****************************************************************************
  49  * An input item has gained subitems (Event Callback)
  50  *****************************************************************************/
  51
  52 static void input_item_add_subitem_tree ( const vlc_event_t * p_event,
  53                                           void * user_data )
  54 {
  55     input_item_t *p_input = p_event->p_obj;
  56     playlist_t *p_playlist = (( playlist_item_t* ) user_data)->p_playlist;
  57     input_item_node_t *p_new_root = p_event->u.input_item_subitem_tree_added.p_root;
  58
  59     PL_LOCK;
  60
  61     playlist_item_t *p_item =
  62         playlist_ItemGetByInput( p_playlist, p_input );
  63
  64     assert( p_item != NULL );
  65
  66     bool b_current = get_current_status_item( p_playlist ) == p_item;
  67     bool b_autostart = var_CreateGetBool( p_playlist, "playlist-autostart" );
  68     bool b_stop = p_item->i_flags & PLAYLIST_SUBITEM_STOP_FLAG;
  69     bool b_flat = false;
  70
  71     p_item->i_flags &= ~PLAYLIST_SUBITEM_STOP_FLAG;
  72
  73     /* We will have to flatten the tree out if we are in "the playlist" node and
  74     the user setting demands flat playlist */
  75
  76     if( !pl_priv(p_playlist)->b_tree ) {
  77         playlist_item_t *p_up = p_item;
  78         while( p_up->p_parent )
  79         {
  80             if( p_up->p_parent == p_playlist->p_playing )
  81             {
  82                 b_flat = true;
  83                 break;
  84             }
  85             p_up = p_up->p_parent;
  86         }
  87     }
  88
  89     int pos = 0;
  90
  91     /* If we have to flatten out, then take the item's position in the parent as
  92     insertion point and delete the item */
  93
  94     if( b_flat )
  95     {
  96         playlist_item_t *p_parent = p_item->p_parent;
  97         assert( p_parent != NULL );
  98
  99         int i;
 100         for( i = 0; i < p_parent->i_children; i++ )
 101         {
 102             if( p_parent->pp_children[i] == p_item )
 103             {
 104                 pos = i;
 105                 break;
 106             }
 107         }
 108         assert( i < p_parent->i_children );
 109
 110         playlist_DeleteItem( p_playlist, p_item, true );
 111
 112         p_item = p_parent;
 113     }
 114     else
 115     {
 116         pos = p_item->i_children >= 0 ? p_item->i_children : 0;
 117     }
 118
 119     /* At this point:
 120     "p_item" is the node where sub-items should be inserted,
 121     "pos" is the insertion position in that node */
 122
 123     int last_pos = playlist_InsertInputItemTree( p_playlist,
 124                                                  p_item,
 125                                                  p_new_root,
 126                                                  pos,
 127                                                  b_flat );
 128
 129     if( !b_flat ) var_SetAddress( p_playlist, "leaf-to-parent", p_input );
 130
 131     //control playback only if it was the current playing item that got subitems
 132     if( b_current )
 133     {
 134         if( last_pos == pos || ( b_stop && !b_flat ) || !b_autostart )
 135         {
 136             /* We stop, either because no sub-item was actually created, or some
 137             flags/settings want us to do so at this point */
 138             PL_UNLOCK;
 139             playlist_Stop( p_playlist );
 140             return;
 141         }
 142         else
 143         {
 144             /* Continue to play, either random or the first new item */
 145             playlist_item_t *p_play_item;
 146
 147             if( var_GetBool( p_playlist, "random" ) )
 148             {
 149                 unsigned rand_pos =
 150                     ((unsigned)vlc_mrand48()) % (last_pos - pos);
 151                 rand_pos += pos;
 152                 p_play_item = p_item->pp_children[rand_pos];
 153             }
 154             else
 155             {
 156                 p_play_item = p_item->pp_children[pos];
 157                 /* NOTE: this is a work around the general bug:
 158                 if node-to-be-played contains sub-nodes, then second instead
 159                 of first leaf starts playing (only in case the leafs have just
 160                 been instered and playlist has not yet been rebuilt.)
 161                 */
 162                 while( p_play_item->i_children > 0 )
 163                     p_play_item = p_play_item->pp_children[0];
 164             }
 165
 166             playlist_Control( p_playlist, PLAYLIST_VIEWPLAY,
 167                                   pl_Locked,
 168                                   get_current_status_node( p_playlist ),
 169                                   p_play_item );
 170         }
 171     }
 172
 173     PL_UNLOCK;
 174 }
 175 /*****************************************************************************
 176  * An input item's meta or duration has changed (Event Callback)
 177  *****************************************************************************/
 178 static void input_item_changed( const vlc_event_t * p_event,
 179                                 void * user_data )
 180 {
 181     playlist_item_t *p_item = user_data;
 182     VLC_UNUSED( p_event );
 183     var_SetAddress( p_item->p_playlist, "item-change", p_item->p_input );
 184 }
 185
 186 /*****************************************************************************
 187  * Listen to vlc_InputItemAddSubItem event
 188  *****************************************************************************/
 189 static void install_input_item_observer( playlist_item_t * p_item )
 190 {
 191     vlc_event_manager_t * p_em = &p_item->p_input->event_manager;
 192     vlc_event_attach( p_em, vlc_InputItemSubItemTreeAdded,
 193                       input_item_add_subitem_tree, p_item );
 194     vlc_event_attach( p_em, vlc_InputItemDurationChanged,
 195                       input_item_changed, p_item );
 196     vlc_event_attach( p_em, vlc_InputItemMetaChanged,
 197                       input_item_changed, p_item );
 198     vlc_event_attach( p_em, vlc_InputItemNameChanged,
 199                       input_item_changed, p_item );
 200     vlc_event_attach( p_em, vlc_InputItemInfoChanged,
 201                       input_item_changed, p_item );
 202     vlc_event_attach( p_em, vlc_InputItemErrorWhenReadingChanged,
 203                       input_item_changed, p_item );
 204 }
 205
 206 static void uninstall_input_item_observer( playlist_item_t * p_item )
 207 {
 208     vlc_event_manager_t * p_em = &p_item->p_input->event_manager;
 209     vlc_event_detach( p_em, vlc_InputItemSubItemTreeAdded,
 210                       input_item_add_subitem_tree, p_item );
 211     vlc_event_detach( p_em, vlc_InputItemMetaChanged,
 212                       input_item_changed, p_item );
 213     vlc_event_detach( p_em, vlc_InputItemDurationChanged,
 214                       input_item_changed, p_item );
 215     vlc_event_detach( p_em, vlc_InputItemNameChanged,
 216                       input_item_changed, p_item );
 217     vlc_event_detach( p_em, vlc_InputItemInfoChanged,
 218                       input_item_changed, p_item );
 219     vlc_event_detach( p_em, vlc_InputItemErrorWhenReadingChanged,
 220                       input_item_changed, p_item );
 221 }
 222
 223 /*****************************************************************************
 224  * Playlist item creation
 225  *****************************************************************************/
 226 playlist_item_t *playlist_ItemNewFromInput( playlist_t *p_playlist,
 227                                               input_item_t *p_input )
 228 {
 229     playlist_item_t* p_item = malloc( sizeof( playlist_item_t ) );
 230     if( !p_item )
 231         return NULL;
 232
 233     assert( p_input );
 234
 235     p_item->p_input = p_input;
 236     vlc_gc_incref( p_item->p_input );
 237
 238     p_item->i_id = ++pl_priv(p_playlist)->i_last_playlist_id;
 239
 240     p_item->p_parent = NULL;
 241     p_item->i_children = -1;
 242     p_item->pp_children = NULL;
 243     p_item->i_flags = 0;
 244     p_item->p_playlist = p_playlist;
 245
 246     install_input_item_observer( p_item );
 247
 248     return p_item;
 249 }
 250
 251 /***************************************************************************
 252  * Playlist item destruction
 253  ***************************************************************************/
 254
 255 /**
 256  * Release an item
 257  *
 258  * \param p_item item to delete
 259  * \return VLC_SUCCESS
 260 */
 261 int playlist_ItemRelease( playlist_item_t *p_item )
 262 {
 263     /* For the assert */
 264     playlist_t *p_playlist = p_item->p_playlist;
 265     PL_ASSERT_LOCKED;
 266
 267     /* Surprise, we can't actually do more because we
 268      * don't do refcounting, or eauivalent.
 269      * Because item are not only accessed by their id
 270      * using playlist_item outside the PL_LOCK isn't safe.
 271      * Most of the modules does that.
 272      *
 273      * Who wants to add proper memory management? */
 274     uninstall_input_item_observer( p_item );
 275     ARRAY_APPEND( pl_priv(p_playlist)->items_to_delete, p_item);
 276     return VLC_SUCCESS;
 277 }
 278
 279 /**
 280  * Delete input item
 281  *
 282  * Remove an input item when it appears from a root playlist item
 283  * \param p_playlist playlist object
 284  * \param p_input the input to delete
 285  * \param p_root root playlist item
 286  * \param b_do_stop must stop or not the playlist
 287  * \return VLC_SUCCESS or VLC_EGENERIC
 288 */
 289 static int DeleteFromInput( playlist_t *p_playlist, input_item_t *p_input,
 290                             playlist_item_t *p_root, bool b_do_stop )
 291 {
 292     PL_ASSERT_LOCKED;
 293     playlist_item_t *p_item = playlist_ItemFindFromInputAndRoot(
 294         p_playlist, p_input, p_root, false );
 295     if( !p_item ) return VLC_EGENERIC;
 296     return playlist_DeleteItem( p_playlist, p_item, b_do_stop );
 297 }
 298
 299 /**
 300  * Delete input item
 301  *
 302  * Remove an input item when it appears from a root playlist item
 303  * \param p_playlist playlist object
 304  * \param p_input the input to delete
 305  * \param p_root root playlist item
 306  * \param b_locked TRUE if the playlist is locked
 307  * \return VLC_SUCCESS or VLC_EGENERIC
 308  */
 309 int playlist_DeleteFromInputInParent( playlist_t *p_playlist,
 310                                       input_item_t *p_item,
 311                                       playlist_item_t *p_root, bool b_locked )
 312 {
 313     int i_ret;
 314     PL_LOCK_IF( !b_locked );
 315     i_ret = DeleteFromInput( p_playlist, p_item, p_root, true );
 316     PL_UNLOCK_IF( !b_locked );
 317     return i_ret;
 318 }
 319
 320 /**
 321  * Delete from input
 322  *
 323  * Search anywhere in playlist for an an input item and delete it
 324  * \param p_playlist playlist object
 325  * \param p_input the input to delete
 326  * \param b_locked TRUE if the playlist is locked
 327  * \return VLC_SUCCESS or VLC_ENOITEM
 328  */
 329 int playlist_DeleteFromInput( playlist_t *p_playlist, input_item_t *p_input,
 330                               bool b_locked )
 331 {
 332     int i_ret;
 333     PL_LOCK_IF( !b_locked );
 334     i_ret = DeleteFromInput( p_playlist, p_input,
 335                              p_playlist->p_root, true );
 336     PL_UNLOCK_IF( !b_locked );
 337     return ( i_ret == VLC_SUCCESS ? VLC_SUCCESS : VLC_ENOITEM );
 338 }
 339
 340 /**
 341  * Clear the playlist
 342  *
 343  * \param p_playlist playlist object
 344  * \param b_locked TRUE if the playlist is locked
 345  * \return nothing
 346  */
 347 void playlist_Clear( playlist_t * p_playlist, bool b_locked )
 348 {
 349     PL_LOCK_IF( !b_locked );
 350     playlist_NodeEmpty( p_playlist, p_playlist->p_playing, true );
 351     PL_UNLOCK_IF( !b_locked );
 352 }
 353
 354 /**
 355  * Delete playlist item
 356  *
 357  * Remove a playlist item from the playlist, given its id
 358  * This function is to be used only by the playlist
 359  * \param p_playlist playlist object
 360  * \param i_id id of the item do delete
 361  * \return VLC_SUCCESS or an error
 362  */
 363 int playlist_DeleteFromItemId( playlist_t *p_playlist, int i_id )
 364 {
 365     PL_ASSERT_LOCKED;
 366     playlist_item_t *p_item = playlist_ItemGetById( p_playlist, i_id );
 367     if( !p_item ) return VLC_EGENERIC;
 368     return playlist_DeleteItem( p_playlist, p_item, true );
 369 }
 370
 371 /***************************************************************************
 372  * Playlist item addition
 373  ***************************************************************************/
 374 /**
 375  * Playlist add
 376  *
 377  * Add an item to the playlist or the media library
 378  * \param p_playlist the playlist to add into
 379  * \param psz_uri the mrl to add to the playlist
 380  * \param psz_name a text giving a name or description of this item
 381  * \param i_mode the mode used when adding
 382  * \param i_pos the position in the playlist where to add. If this is
 383  *        PLAYLIST_END the item will be added at the end of the playlist
 384  *        regardless of its size
 385  * \param b_playlist TRUE for playlist, FALSE for media library
 386  * \param b_locked TRUE if the playlist is locked
 387  * \return VLC_SUCCESS or a VLC error code
 388  */
 389 int playlist_Add( playlist_t *p_playlist, const char *psz_uri,
 390                   const char *psz_name, int i_mode, int i_pos,
 391                   bool b_playlist, bool b_locked )
 392 {
 393     return playlist_AddExt( p_playlist, psz_uri, psz_name,
 394                             i_mode, i_pos, -1, 0, NULL, 0, b_playlist, b_locked );
 395 }
 396
 397 /**
 398  * Add a MRL into the playlist or the media library, duration and options given
 399  *
 400  * \param p_playlist the playlist to add into
 401  * \param psz_uri the mrl to add to the playlist
 402  * \param psz_name a text giving a name or description of this item
 403  * \param i_mode the mode used when adding
 404  * \param i_pos the position in the playlist where to add. If this is
 405  *        PLAYLIST_END the item will be added at the end of the playlist
 406  *        regardless of its size
 407  * \param i_duration length of the item in milliseconds.
 408  * \param i_options the number of options
 409  * \param ppsz_options an array of options
 410  * \param i_option_flags options flags
 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 a VLC error code
 414 */
 415 int playlist_AddExt( playlist_t *p_playlist, const char * psz_uri,
 416                      const char *psz_name, int i_mode, int i_pos,
 417                      mtime_t i_duration,
 418                      int i_options, const char *const *ppsz_options,
 419                      unsigned i_option_flags,
 420                      bool b_playlist, bool b_locked )
 421 {
 422     int i_ret;
 423     input_item_t *p_input;
 424
 425     p_input = input_item_NewExt( p_playlist, psz_uri, psz_name,
 426                                  i_options, ppsz_options, i_option_flags,
 427                                  i_duration );
 428     if( p_input == NULL )
 429         return VLC_ENOMEM;
 430     i_ret = playlist_AddInput( p_playlist, p_input, i_mode, i_pos, b_playlist,
 431                                b_locked );
 432     vlc_gc_decref( p_input );
 433     return i_ret;
 434 }
 435
 436 /**
 437  * Add an input item to the playlist node
 438  *
 439  * \param p_playlist the playlist to add into
 440  * \param p_input the input item to add
 441  * \param i_mode the mode used when adding
 442  * \param i_pos the position in the playlist where to add. If this is
 443  *        PLAYLIST_END the item will be added at the end of the playlist
 444  *        regardless of its size
 445  * \param b_playlist TRUE for playlist, FALSE for media library
 446  * \param b_locked TRUE if the playlist is locked
 447  * \return VLC_SUCCESS or VLC_ENOMEM or VLC_EGENERIC
 448 */
 449 int playlist_AddInput( playlist_t* p_playlist, input_item_t *p_input,
 450                        int i_mode, int i_pos, bool b_playlist,
 451                        bool b_locked )
 452 {
 453     playlist_item_t *p_item;
 454     if( p_playlist->b_die ) return VLC_EGENERIC;
 455     if( !pl_priv(p_playlist)->b_doing_ml )
 456         PL_DEBUG( "adding item `%s' ( %s )", p_input->psz_name,
 457                                              p_input->psz_uri );
 458
 459     PL_LOCK_IF( !b_locked );
 460
 461     p_item = playlist_ItemNewFromInput( p_playlist, p_input );
 462     if( p_item == NULL ) return VLC_ENOMEM;
 463     AddItem( p_playlist, p_item,
 464              b_playlist ? p_playlist->p_playing :
 465                           p_playlist->p_media_library , i_mode, i_pos );
 466
 467     GoAndPreparse( p_playlist, i_mode, p_item );
 468
 469     PL_UNLOCK_IF( !b_locked );
 470     return VLC_SUCCESS;
 471 }
 472
 473 /**
 474  * Add an input item to a given node
 475  *
 476  * \param p_playlist the playlist to add into
 477  * \param p_input the input item to add
 478  * \param p_parent the parent item to add into
 479  * \param i_mode the mode used when addin
 480  * \param i_pos the position in the playlist where to add. If this is
 481  *        PLAYLIST_END the item will be added at the end of the playlist
 482  *        regardless of its size
 483  * \param b_locked TRUE if the playlist is locked
 484  * \return the new playlist item
 485  */
 486 playlist_item_t * playlist_NodeAddInput( playlist_t *p_playlist,
 487                                          input_item_t *p_input,
 488                                          playlist_item_t *p_parent,
 489                                          int i_mode, int i_pos,
 490                                          bool b_locked )
 491 {
 492     playlist_item_t *p_item;
 493     assert( p_input );
 494     assert( p_parent && p_parent->i_children != -1 );
 495
 496     if( p_playlist->b_die )
 497         return NULL;
 498     PL_LOCK_IF( !b_locked );
 499
 500     p_item = playlist_ItemNewFromInput( p_playlist, p_input );
 501     if( p_item == NULL ) return NULL;
 502     AddItem( p_playlist, p_item, p_parent, i_mode, i_pos );
 503
 504     GoAndPreparse( p_playlist, i_mode, p_item );
 505
 506     PL_UNLOCK_IF( !b_locked );
 507
 508     return p_item;
 509 }
 510
 511 /**
 512  * Copy an item (and all its children, if any) into another node
 513  *
 514  * \param p_playlist the playlist to operate on
 515  * \param p_item the playlist item to copy
 516  * \param p_parent the parent item to copy into
 517  * \param i_pos the position in the parent item for the new copy;
 518  *              if this is PLAYLIST_END, the copy is appended after all
 519  *              parent's children
 520  * \return the position in parent item just behind the last new item inserted
 521  */
 522 int playlist_NodeAddCopy (
 523     playlist_t *p_playlist, playlist_item_t *p_item,
 524     playlist_item_t *p_parent, int i_pos )
 525 {
 526     PL_ASSERT_LOCKED;
 527     assert( p_parent != NULL && p_item != NULL );
 528     assert( p_parent->i_children > -1 );
 529
 530     if( i_pos == PLAYLIST_END ) i_pos = p_parent->i_children;
 531
 532     bool b_flat = false;
 533
 534     playlist_item_t *p_up = p_parent;
 535     while( p_up )
 536     {
 537         if( p_up == p_playlist->p_playing )
 538             if( !pl_priv(p_playlist)->b_tree ) b_flat = true;
 539         if( p_up == p_item )
 540             /* TODO: We don't support copying a node into itself (yet),
 541             because we insert items as we copy. Instead, we should copy
 542             all items first and then insert. */
 543             return i_pos;
 544         p_up = p_up->p_parent;
 545     }
 546
 547     return RecursiveInsertCopy( p_playlist, p_item, p_parent, i_pos, b_flat );
 548 }
 549
 550 /**
 551  * Insert a tree of input items into a given playlist node
 552  *
 553  * \param p_playlist the playlist to insert into
 554  * \param p_parent the receiving playlist node (can be an item)
 555  * \param p_node the root of input item tree,
 556           only it's contents will be inserted
 557  * \param i_pos the position in the playlist where to insert. If this is
 558  *        PLAYLIST_END the items will be added at the end of the playlist
 559  *        regardless of its size
 560  * \param b_flat TRUE if the new tree contents should be flattened into a list
 561  * \return the first new leaf inserted (in playing order)
 562  */
 563 int playlist_InsertInputItemTree (
 564     playlist_t *p_playlist, playlist_item_t *p_parent,
 565     input_item_node_t *p_node, int i_pos, bool b_flat )
 566 {
 567   playlist_item_t *p_first_leaf = NULL;
 568   int i = RecursiveAddIntoParent ( p_playlist, p_parent, p_node, i_pos, b_flat, &p_first_leaf );
 569   return i;
 570 }
 571
 572
 573 /*****************************************************************************
 574  * Playlist item misc operations
 575  *****************************************************************************/
 576
 577 /**
 578  * Find an item within a root, given its input id.
 579  *
 580  * \param p_playlist the playlist object
 581  * \param p_item the input item
 582  * \param p_root root playlist item
 583  * \param b_items_only TRUE if we want the item himself
 584  * \return the first found item, or NULL if not found
 585  */
 586 playlist_item_t *playlist_ItemFindFromInputAndRoot( playlist_t *p_playlist,
 587                                                     input_item_t *p_item,
 588                                                     playlist_item_t *p_root,
 589                                                     bool b_items_only )
 590 {
 591     int i;
 592     for( i = 0 ; i< p_root->i_children ; i++ )
 593     {
 594         if( ( b_items_only ? p_root->pp_children[i]->i_children == -1 : 1 ) &&
 595             p_root->pp_children[i]->p_input == p_item )
 596         {
 597             return p_root->pp_children[i];
 598         }
 599         else if( p_root->pp_children[i]->i_children >= 0 )
 600         {
 601             playlist_item_t *p_search =
 602                  playlist_ItemFindFromInputAndRoot( p_playlist, p_item,
 603                                                     p_root->pp_children[i],
 604                                                     b_items_only );
 605             if( p_search ) return p_search;
 606         }
 607     }
 608     return NULL;
 609 }
 610
 611
 612 static int ItemIndex ( playlist_item_t *p_item )
 613 {
 614     for( int i = 0; i < p_item->p_parent->i_children; i++ )
 615         if( p_item->p_parent->pp_children[i] == p_item ) return i;
 616     return -1;
 617 }
 618
 619 /**
 620  * Moves an item
 621  *
 622  * This function must be entered with the playlist lock
 623  *
 624  * \param p_playlist the playlist
 625  * \param p_item the item to move
 626  * \param p_node the new parent of the item
 627  * \param i_newpos the new position under this new parent
 628  * \return VLC_SUCCESS or an error
 629  */
 630 int playlist_TreeMove( playlist_t * p_playlist, playlist_item_t *p_item,
 631                        playlist_item_t *p_node, int i_newpos )
 632 {
 633     PL_ASSERT_LOCKED;
 634
 635     if( p_node->i_children == -1 ) return VLC_EGENERIC;
 636
 637     playlist_item_t *p_detach = p_item->p_parent;
 638     int i_index = ItemIndex( p_item );
 639
 640     REMOVE_ELEM( p_detach->pp_children, p_detach->i_children, i_index );
 641
 642     if( p_detach == p_node && i_index < i_newpos )
 643         i_newpos--;
 644
 645     INSERT_ELEM( p_node->pp_children, p_node->i_children, i_newpos, p_item );
 646     p_item->p_parent = p_node;
 647
 648     pl_priv( p_playlist )->b_reset_currently_playing = true;
 649     vlc_cond_signal( &pl_priv( p_playlist )->signal );
 650     return VLC_SUCCESS;
 651 }
 652
 653 /**
 654  * Moves an array of items
 655  *
 656  * This function must be entered with the playlist lock
 657  *
 658  * \param p_playlist the playlist
 659  * \param i_items the number of indexes to move
 660  * \param pp_items the array of indexes to move
 661  * \param p_node the target node
 662  * \param i_newpos the target position under this node
 663  * \return VLC_SUCCESS or an error
 664  */
 665 int playlist_TreeMoveMany( playlist_t *p_playlist,
 666                             int i_items, playlist_item_t **pp_items,
 667                             playlist_item_t *p_node, int i_newpos )
 668 {
 669     PL_ASSERT_LOCKED;
 670
 671     if ( p_node->i_children == -1 ) return VLC_EGENERIC;
 672
 673     int i;
 674     for( i = 0; i < i_items; i++ )
 675     {
 676         playlist_item_t *p_item = pp_items[i];
 677         int i_index = ItemIndex( p_item );
 678         playlist_item_t *p_parent = p_item->p_parent;
 679         REMOVE_ELEM( p_parent->pp_children, p_parent->i_children, i_index );
 680         if ( p_parent == p_node && i_index < i_newpos ) i_newpos--;
 681     }
 682     for( i = i_items - 1; i >= 0; i-- )
 683     {
 684         playlist_item_t *p_item = pp_items[i];
 685         INSERT_ELEM( p_node->pp_children, p_node->i_children, i_newpos, p_item );
 686         p_item->p_parent = p_node;
 687     }
 688
 689     pl_priv( p_playlist )->b_reset_currently_playing = true;
 690     vlc_cond_signal( &pl_priv( p_playlist )->signal );
 691     return VLC_SUCCESS;
 692 }
 693
 694 /**
 695  * Send a notification that an item has been added to a node
 696  *
 697  * \param p_playlist the playlist object
 698  * \param i_item_id id of the item added
 699  * \param i_node_id id of the node in wich the item was added
 700  * \param b_signal TRUE if the function must send a signal
 701  * \return nothing
 702  */
 703 void playlist_SendAddNotify( playlist_t *p_playlist, int i_item_id,
 704                              int i_node_id, bool b_signal )
 705 {
 706     playlist_private_t *p_sys = pl_priv(p_playlist);
 707     PL_ASSERT_LOCKED;
 708
 709     p_sys->b_reset_currently_playing = true;
 710     if( b_signal )
 711         vlc_cond_signal( &p_sys->signal );
 712
 713     playlist_add_t add;
 714     add.i_item = i_item_id;
 715     add.i_node = i_node_id;
 716
 717     vlc_value_t val;
 718     val.p_address = &add;
 719
 720     var_Set( p_playlist, "playlist-item-append", val );
 721 }
 722
 723 /***************************************************************************
 724  * The following functions are local
 725  ***************************************************************************/
 726
 727 /* Enqueue an item for preparsing, and play it, if needed */
 728 static void GoAndPreparse( playlist_t *p_playlist, int i_mode,
 729                            playlist_item_t *p_item )
 730 {
 731     PL_ASSERT_LOCKED;
 732     if( (i_mode & PLAYLIST_GO ) )
 733     {
 734         pl_priv(p_playlist)->request.b_request = true;
 735         pl_priv(p_playlist)->request.i_skip = 0;
 736         pl_priv(p_playlist)->request.p_item = p_item;
 737         if( pl_priv(p_playlist)->p_input )
 738             input_Stop( pl_priv(p_playlist)->p_input, true );
 739         pl_priv(p_playlist)->request.i_status = PLAYLIST_RUNNING;
 740         vlc_cond_signal( &pl_priv(p_playlist)->signal );
 741     }
 742     /* Preparse if no artist/album info, and hasn't been preparsed allready
 743        and if user has some preparsing option (auto-preparse variable)
 744        enabled*/
 745     char *psz_artist = input_item_GetArtist( p_item->p_input );
 746     char *psz_album = input_item_GetAlbum( p_item->p_input );
 747     if( pl_priv(p_playlist)->b_auto_preparse &&
 748         input_item_IsPreparsed( p_item->p_input ) == false &&
 749             ( EMPTY_STR( psz_artist ) || ( EMPTY_STR( psz_album ) ) )
 750           )
 751         playlist_PreparseEnqueue( p_playlist, p_item->p_input );
 752     free( psz_artist );
 753     free( psz_album );
 754 }
 755
 756 /* Add the playlist item to the requested node and fire a notification */
 757 static void AddItem( playlist_t *p_playlist, playlist_item_t *p_item,
 758                      playlist_item_t *p_node, int i_mode, int i_pos )
 759 {
 760     PL_ASSERT_LOCKED;
 761     ARRAY_APPEND(p_playlist->items, p_item);
 762     ARRAY_APPEND(p_playlist->all_items, p_item);
 763
 764     if( i_pos == PLAYLIST_END )
 765         playlist_NodeAppend( p_playlist, p_item, p_node );
 766     else
 767         playlist_NodeInsert( p_playlist, p_item, p_node, i_pos );
 768
 769     if( !pl_priv(p_playlist)->b_doing_ml )
 770         playlist_SendAddNotify( p_playlist, p_item->i_id, p_node->i_id,
 771                                  !( i_mode & PLAYLIST_NO_REBUILD ) );
 772 }
 773
 774 /* Actually convert an item to a node */
 775 static void ChangeToNode( playlist_t *p_playlist, playlist_item_t *p_item )
 776 {
 777     int i;
 778     if( p_item->i_children != -1 ) return;
 779
 780     p_item->i_children = 0;
 781
 782     input_item_t *p_input = p_item->p_input;
 783     vlc_mutex_lock( &p_input->lock );
 784     p_input->i_type = ITEM_TYPE_NODE;
 785     vlc_mutex_unlock( &p_input->lock );
 786
 787     var_SetAddress( p_playlist, "item-change", p_item->p_input );
 788
 789     /* Remove it from the array of available items */
 790     ARRAY_BSEARCH( p_playlist->items,->i_id, int, p_item->i_id, i );
 791     if( i != -1 )
 792         ARRAY_REMOVE( p_playlist->items, i );
 793 }
 794
 795 /* Do the actual removal */
 796 int playlist_DeleteItem( playlist_t * p_playlist, playlist_item_t *p_item,
 797                         bool b_stop )
 798 {
 799     assert( b_stop );
 800     return playlist_NodeDelete( p_playlist, p_item, true, false );
 801 #if 0
 802     int i;
 803     int i_id = p_item->i_id;
 804     PL_ASSERT_LOCKED;
 805
 806     if( p_item->i_children > -1 )
 807     {
 808         return playlist_NodeDelete( p_playlist, p_item, true, false );
 809     }
 810
 811     pl_priv(p_playlist)->b_reset_currently_playing = true;
 812     var_SetInteger( p_playlist, "playlist-item-deleted", i_id );
 813
 814     /* Remove the item from the bank */
 815     ARRAY_BSEARCH( p_playlist->all_items,->i_id, int, i_id, i );
 816     if( i != -1 )
 817         ARRAY_REMOVE( p_playlist->all_items, i );
 818
 819     ARRAY_BSEARCH( p_playlist->items,->i_id, int, i_id, i );
 820     if( i != -1 )
 821         ARRAY_REMOVE( p_playlist->items, i );
 822
 823     /* Check if it is the current item */
 824     if( get_current_status_item( p_playlist ) == p_item )
 825     {
 826         /* Stop it if we have to */
 827         if( b_stop )
 828         {
 829             playlist_Control( p_playlist, PLAYLIST_STOP, pl_Locked );
 830             msg_Info( p_playlist, "stopping playback" );
 831         }
 832         /* In any case, this item can't be the next one to be played ! */
 833         set_current_status_item( p_playlist, NULL );
 834     }
 835
 836     ARRAY_BSEARCH( p_playlist->current,->i_id, int, i_id, i );
 837     if( i != -1 )
 838         ARRAY_REMOVE( p_playlist->current, i );
 839
 840     PL_DEBUG( "deleting item `%s'", p_item->p_input->psz_name );
 841
 842     /* Remove the item from its parent */
 843     playlist_NodeRemoveItem( p_playlist, p_item, p_item->p_parent );
 844
 845     playlist_ItemRelease( p_item );
 846
 847     return VLC_SUCCESS;
 848 #endif
 849 }
 850
 851 static int RecursiveAddIntoParent (
 852     playlist_t *p_playlist, playlist_item_t *p_parent,
 853     input_item_node_t *p_node, int i_pos, bool b_flat,
 854     playlist_item_t **pp_first_leaf )
 855 {
 856   *pp_first_leaf = NULL;
 857
 858   if( p_parent->i_children == -1 ) ChangeToNode( p_playlist, p_parent );
 859
 860   if( i_pos == PLAYLIST_END ) i_pos = p_parent->i_children;
 861
 862   for( int i = 0; i < p_node->i_children; i++ )
 863   {
 864       input_item_node_t *p_child_node = p_node->pp_children[i];
 865
 866       playlist_item_t *p_new_item = NULL;
 867       bool b_children = p_child_node->i_children > 0;
 868
 869       //Create the playlist item represented by input node, if allowed.
 870       if( !(b_flat && b_children) )
 871       {
 872           p_new_item = playlist_NodeAddInput( p_playlist,
 873                                               p_child_node->p_item,
 874                                               p_parent,
 875                                               PLAYLIST_INSERT, i_pos,
 876                                               pl_Locked );
 877           if( !p_new_item ) return i_pos;
 878
 879           i_pos++;
 880       }
 881       //Recurse if any children
 882       if( b_children )
 883       {
 884           //Substitute p_new_item for first child leaf
 885           //(If flat, continue counting from current position)
 886           int i_last_pos = RecursiveAddIntoParent(
 887                                       p_playlist,
 888                                       p_new_item ? p_new_item : p_parent,
 889                                       p_child_node,
 890                                       ( b_flat ? i_pos : 0 ),
 891                                       b_flat,
 892                                       &p_new_item );
 893           //If flat, take position after recursion as current position
 894           if( b_flat ) i_pos = i_last_pos;
 895       }
 896
 897       assert( p_new_item != NULL );
 898       if( i == 0 ) *pp_first_leaf = p_new_item;
 899   }
 900   return i_pos;
 901 }
 902
 903 static int RecursiveInsertCopy (
 904     playlist_t *p_playlist, playlist_item_t *p_item,
 905     playlist_item_t *p_parent, int i_pos, bool b_flat )
 906 {
 907     PL_ASSERT_LOCKED;
 908     assert( p_parent != NULL && p_item != NULL );
 909
 910     if( p_item == p_parent ) return i_pos;
 911
 912     input_item_t *p_input = p_item->p_input;
 913
 914     if( !(p_item->i_children != -1 && b_flat) )
 915     {
 916         input_item_t *p_new_input = input_item_Copy( VLC_OBJECT(p_playlist),
 917                                                      p_input );
 918         if( !p_new_input ) return i_pos;
 919
 920         playlist_item_t *p_new_item = NULL;
 921         if( p_item->i_children == -1 )
 922             p_new_item = playlist_NodeAddInput( p_playlist, p_new_input,
 923                                    p_parent, PLAYLIST_INSERT, i_pos,
 924                                    pl_Locked );
 925         else
 926             p_new_item = playlist_NodeCreate( p_playlist, NULL,
 927                                  p_parent, i_pos, 0, p_new_input );
 928         vlc_gc_decref( p_new_input );
 929         if( !p_new_item ) return i_pos;
 930
 931         i_pos++;
 932
 933         if( p_new_item->i_children != -1 )
 934             p_parent = p_new_item;
 935     }
 936
 937     for( int i = 0; i < p_item->i_children; i++ )
 938     {
 939         if( b_flat )
 940             i_pos = RecursiveInsertCopy( p_playlist, p_item->pp_children[i],
 941                                          p_parent, i_pos, true );
 942         else
 943             RecursiveInsertCopy( p_playlist, p_item->pp_children[i],
 944                                  p_parent, p_parent->i_children, false );
 945     }
 946
 947     return i_pos;
 948 }