git.sesse.net Git - vlc/blob - src/playlist/item.c

   1 /*****************************************************************************
   2  * item.c : Playlist item creation/deletion/add/removal functions
   3  *****************************************************************************
   4  * Copyright (C) 1999-2007 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Samuel Hocevar <sam@zoy.org>
   8  *          Clément Stenac <zorglub@videolan.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24 #ifdef HAVE_CONFIG_H
  25 # include "config.h"
  26 #endif
  27
  28 #include <vlc_common.h>
  29 #include <assert.h>
  30 #include <vlc_playlist.h>
  31 #include "playlist_internal.h"
  32
  33 static void AddItem( playlist_t *p_playlist, playlist_item_t *p_item,
  34                      playlist_item_t *p_node, int i_mode, int i_pos );
  35 static void GoAndPreparse( playlist_t *p_playlist, int i_mode,
  36                            playlist_item_t *, playlist_item_t * );
  37 static void ChangeToNode( playlist_t *p_playlist, playlist_item_t *p_item );
  38 static int DeleteInner( playlist_t * p_playlist, playlist_item_t *p_item,
  39                         bool b_stop );
  40
  41 /*****************************************************************************
  42  * An input item has gained a subitem (Event Callback)
  43  *****************************************************************************/
  44 static void input_item_subitem_added( const vlc_event_t * p_event,
  45                                       void * user_data )
  46 {
  47     playlist_item_t *p_parent_playlist_item = user_data;
  48     playlist_t * p_playlist = p_parent_playlist_item->p_playlist;
  49     input_item_t * p_parent, * p_child;
  50     playlist_item_t * p_child_in_category;
  51     playlist_item_t * p_item_in_category;
  52     bool b_play;
  53
  54     p_parent = p_event->p_obj;
  55     p_child = p_event->u.input_item_subitem_added.p_new_child;
  56
  57     PL_LOCK;
  58     b_play = var_CreateGetBool( p_playlist, "playlist-autostart" );
  59
  60     /* This part is really hakish, but this playlist system isn't simple */
  61     /* First check if we haven't already added the item as we are
  62      * listening using the onelevel and the category representent
  63      * (Because of the playlist design) */
  64     p_child_in_category = playlist_ItemFindFromInputAndRoot(
  65                             p_playlist, p_child->i_id,
  66                             p_playlist->p_root_category,
  67                             false /* Only non-node */ );
  68
  69     if( !p_child_in_category )
  70     {
  71         /* Then, transform to a node if needed */
  72         p_item_in_category = playlist_ItemFindFromInputAndRoot(
  73                                 p_playlist, p_parent->i_id,
  74                                 p_playlist->p_root_category,
  75                                 false /* Only non-node */ );
  76         if( !p_item_in_category )
  77         {
  78             /* Item may have been removed */
  79             PL_UNLOCK;
  80             return;
  81         }
  82
  83         b_play = b_play &&
  84             p_item_in_category == get_current_status_item( p_playlist );
  85
  86         /* If this item is already a node don't transform it */
  87         if( p_item_in_category->i_children == -1 )
  88         {
  89             p_item_in_category = playlist_ItemToNode( p_playlist,
  90                     p_item_in_category, pl_Locked );
  91             p_item_in_category->p_input->i_type = ITEM_TYPE_PLAYLIST;
  92         }
  93
  94         int i_ret = playlist_BothAddInput( p_playlist, p_child,
  95                 p_item_in_category,
  96                 PLAYLIST_APPEND | PLAYLIST_SPREPARSE , PLAYLIST_END,
  97                 NULL, NULL, pl_Locked );
  98
  99         if( i_ret == VLC_SUCCESS && b_play )
 100         {
 101             playlist_Control( p_playlist, PLAYLIST_VIEWPLAY,
 102                           pl_Locked, p_item_in_category, NULL );
 103         }
 104     }
 105
 106     PL_UNLOCK;
 107
 108 }
 109
 110 /*****************************************************************************
 111  * An input item's meta or duration has changed (Event Callback)
 112  *****************************************************************************/
 113 static void input_item_changed( const vlc_event_t * p_event,
 114                                 void * user_data )
 115 {
 116     (void)p_event;
 117     playlist_item_t * p_item = user_data;
 118     var_SetInteger( p_item->p_playlist, "item-change", p_item->i_id );
 119 }
 120
 121 /*****************************************************************************
 122  * Listen to vlc_InputItemAddSubItem event
 123  *****************************************************************************/
 124 static void install_input_item_observer( playlist_item_t * p_item )
 125 {
 126     vlc_event_manager_t * p_em = &p_item->p_input->event_manager;
 127     vlc_event_attach( p_em, vlc_InputItemSubItemAdded,
 128                       input_item_subitem_added, p_item );
 129     vlc_event_attach( p_em, vlc_InputItemDurationChanged,
 130                       input_item_changed, p_item );
 131     vlc_event_attach( p_em, vlc_InputItemMetaChanged,
 132                       input_item_changed, p_item );
 133     vlc_event_attach( p_em, vlc_InputItemNameChanged,
 134                       input_item_changed, p_item );
 135     vlc_event_attach( p_em, vlc_InputItemInfoChanged,
 136                       input_item_changed, p_item );
 137     vlc_event_attach( p_em, vlc_InputItemErrorWhenReadingChanged,
 138                       input_item_changed, p_item );
 139 }
 140
 141 static void uninstall_input_item_observer( playlist_item_t * p_item )
 142 {
 143     vlc_event_manager_t * p_em = &p_item->p_input->event_manager;
 144     vlc_event_detach( p_em, vlc_InputItemSubItemAdded,
 145                       input_item_subitem_added, p_item );
 146     vlc_event_detach( p_em, vlc_InputItemMetaChanged,
 147                       input_item_changed, p_item );
 148     vlc_event_detach( p_em, vlc_InputItemDurationChanged,
 149                       input_item_changed, p_item );
 150     vlc_event_detach( p_em, vlc_InputItemNameChanged,
 151                       input_item_changed, p_item );
 152     vlc_event_detach( p_em, vlc_InputItemInfoChanged,
 153                       input_item_changed, p_item );
 154     vlc_event_detach( p_em, vlc_InputItemErrorWhenReadingChanged,
 155                       input_item_changed, p_item );
 156 }
 157
 158 /*****************************************************************************
 159  * Playlist item creation
 160  *****************************************************************************/
 161 playlist_item_t *playlist_ItemNewFromInput( playlist_t *p_playlist,
 162                                               input_item_t *p_input )
 163 {
 164     playlist_item_t* p_item = malloc( sizeof( playlist_item_t ) );
 165     if( !p_item )
 166         return NULL;
 167
 168     assert( p_input );
 169
 170     p_item->p_input = p_input;
 171     vlc_gc_incref( p_item->p_input );
 172
 173     p_item->i_id = ++pl_priv(p_playlist)->i_last_playlist_id;
 174
 175     p_item->p_parent = NULL;
 176     p_item->i_children = -1;
 177     p_item->pp_children = NULL;
 178     p_item->i_flags = 0;
 179     p_item->p_playlist = p_playlist;
 180
 181     install_input_item_observer( p_item );
 182
 183     return p_item;
 184 }
 185
 186 playlist_item_t * playlist_ItemNewWithType( playlist_t *p_playlist,
 187                                             const char *psz_uri,
 188                                             const char *psz_name,
 189                                             int i_options,
 190                                             const char *const *ppsz_options,
 191                                             int i_duration, int i_type )
 192 {
 193     input_item_t *p_input;
 194     if( psz_uri == NULL ) return NULL;
 195     p_input = input_item_NewWithType( VLC_OBJECT(p_playlist), psz_uri,
 196                                      psz_name, i_options, ppsz_options,
 197                                      i_duration, i_type );
 198     return playlist_ItemNewFromInput( p_playlist, p_input );
 199 }
 200
 201 /***************************************************************************
 202  * Playlist item destruction
 203  ***************************************************************************/
 204
 205 /**
 206  * Release an item
 207  *
 208  * \param p_item item to delete
 209  * \return VLC_SUCCESS
 210 */
 211 int playlist_ItemRelease( playlist_item_t *p_item )
 212 {
 213     /* For the assert */
 214     playlist_t *p_playlist = p_item->p_playlist;
 215     PL_ASSERT_LOCKED;
 216
 217     /* Surprise, we can't actually do more because we
 218      * don't do refcounting, or eauivalent.
 219      * Because item are not only accessed by their id
 220      * using playlist_item outside the PL_LOCK isn't safe.
 221      * Most of the modules does that.
 222      *
 223      * Who wants to add proper memory management? */
 224     uninstall_input_item_observer( p_item );
 225     ARRAY_APPEND( pl_priv(p_playlist)->items_to_delete, p_item);
 226     return VLC_SUCCESS;
 227 }
 228
 229 /**
 230  * Delete input item
 231  *
 232  * Remove an input item when it appears from a root playlist item
 233  * \param p_playlist playlist object
 234  * \param i_input_id id of the input to delete
 235  * \param p_root root playlist item
 236  * \param b_do_stop must stop or not the playlist
 237  * \return VLC_SUCCESS or VLC_EGENERIC
 238 */
 239 static int DeleteFromInput( playlist_t *p_playlist, int i_input_id,
 240                             playlist_item_t *p_root, bool b_do_stop )
 241 {
 242     int i;
 243     PL_ASSERT_LOCKED;
 244     for( i = 0 ; i< p_root->i_children ; i++ )
 245     {
 246         if( p_root->pp_children[i]->i_children == -1 &&
 247             p_root->pp_children[i]->p_input->i_id == i_input_id )
 248         {
 249             DeleteInner( p_playlist, p_root->pp_children[i], b_do_stop );
 250             return VLC_SUCCESS;
 251         }
 252         else if( p_root->pp_children[i]->i_children >= 0 )
 253         {
 254             int i_ret = DeleteFromInput( p_playlist, i_input_id,
 255                                          p_root->pp_children[i], b_do_stop );
 256             if( i_ret == VLC_SUCCESS ) return VLC_SUCCESS;
 257         }
 258     }
 259     return VLC_EGENERIC;
 260 }
 261
 262 /**
 263  * Delete input item
 264  *
 265  * Remove an input item when it appears from a root playlist item
 266  * \param p_playlist playlist object
 267  * \param i_input_id id of the input to delete
 268  * \param p_root root playlist item
 269  * \param b_locked TRUE if the playlist is locked
 270  * \return VLC_SUCCESS or VLC_EGENERIC
 271  */
 272 int playlist_DeleteFromInputInParent( playlist_t *p_playlist, int i_input_id,
 273                                       playlist_item_t *p_root, bool b_locked )
 274 {
 275     int i_ret;
 276     PL_LOCK_IF( !b_locked );
 277     i_ret = DeleteFromInput( p_playlist, i_input_id,
 278                              p_root, true );
 279     PL_UNLOCK_IF( !b_locked );
 280     return i_ret;
 281 }
 282
 283 /**
 284  * Delete from input
 285  *
 286  * Remove an input item from ONELEVEL and CATEGORY
 287  * \param p_playlist playlist object
 288  * \param i_input_id id of the input to delete
 289  * \param b_locked TRUE if the playlist is locked
 290  * \return VLC_SUCCESS or VLC_ENOITEM
 291  */
 292 int playlist_DeleteFromInput( playlist_t *p_playlist, int i_input_id,
 293                               bool b_locked )
 294 {
 295     int i_ret1, i_ret2;
 296     PL_LOCK_IF( !b_locked );
 297     i_ret1 = DeleteFromInput( p_playlist, i_input_id,
 298                              p_playlist->p_root_category, true );
 299     i_ret2 = DeleteFromInput( p_playlist, i_input_id,
 300                      p_playlist->p_root_onelevel, true );
 301     PL_UNLOCK_IF( !b_locked );
 302     return ( i_ret1 == VLC_SUCCESS || i_ret2 == VLC_SUCCESS ) ?
 303                             VLC_SUCCESS : VLC_ENOITEM;
 304 }
 305
 306 /**
 307  * Clear the playlist
 308  *
 309  * \param p_playlist playlist object
 310  * \param b_locked TRUE if the playlist is locked
 311  * \return nothing
 312  */
 313 void playlist_Clear( playlist_t * p_playlist, bool b_locked )
 314 {
 315     PL_LOCK_IF( !b_locked );
 316     playlist_NodeEmpty( p_playlist, p_playlist->p_local_category, true );
 317     playlist_NodeEmpty( p_playlist, p_playlist->p_local_onelevel, true );
 318     PL_UNLOCK_IF( !b_locked );
 319 }
 320
 321 /**
 322  * Delete playlist item
 323  *
 324  * Remove a playlist item from the playlist, given its id
 325  * This function is to be used only by the playlist
 326  * \param p_playlist playlist object
 327  * \param i_id id of the item do delete
 328  * \return VLC_SUCCESS or an error
 329  */
 330 int playlist_DeleteFromItemId( playlist_t *p_playlist, int i_id )
 331 {
 332     PL_ASSERT_LOCKED;
 333     playlist_item_t *p_item = playlist_ItemGetById( p_playlist, i_id,
 334                                                     pl_Locked );
 335     if( !p_item ) return VLC_EGENERIC;
 336     return DeleteInner( p_playlist, p_item, true );
 337 }
 338
 339 /***************************************************************************
 340  * Playlist item addition
 341  ***************************************************************************/
 342 /**
 343  * Playlist add
 344  *
 345  * Add an item to the playlist or the media library
 346  * \param p_playlist the playlist to add into
 347  * \param psz_uri the mrl to add to the playlist
 348  * \param psz_name a text giving a name or description of this item
 349  * \param i_mode the mode used when adding
 350  * \param i_pos the position in the playlist where to add. If this is
 351  *        PLAYLIST_END the item will be added at the end of the playlist
 352  *        regardless of its size
 353  * \param b_playlist TRUE for playlist, FALSE for media library
 354  * \param b_locked TRUE if the playlist is locked
 355  * \return The id of the playlist item
 356  */
 357 int playlist_Add( playlist_t *p_playlist, const char *psz_uri,
 358                   const char *psz_name, int i_mode, int i_pos,
 359                   bool b_playlist, bool b_locked )
 360 {
 361     return playlist_AddExt( p_playlist, psz_uri, psz_name,
 362                             i_mode, i_pos, -1, NULL, 0, b_playlist, b_locked );
 363 }
 364
 365 /**
 366  * Add a MRL into the playlist or the media library, duration and options given
 367  *
 368  * \param p_playlist the playlist to add into
 369  * \param psz_uri the mrl to add to the playlist
 370  * \param psz_name a text giving a name or description of this item
 371  * \param i_mode the mode used when adding
 372  * \param i_pos the position in the playlist where to add. If this is
 373  *        PLAYLIST_END the item will be added at the end of the playlist
 374  *        regardless of its size
 375  * \param i_duration length of the item in milliseconds.
 376  * \param ppsz_options an array of options
 377  * \param i_options the number of options
 378  * \param b_playlist TRUE for playlist, FALSE for media library
 379  * \param b_locked TRUE if the playlist is locked
 380  * \return The id of the playlist item
 381 */
 382 int playlist_AddExt( playlist_t *p_playlist, const char * psz_uri,
 383                      const char *psz_name, int i_mode, int i_pos,
 384                      mtime_t i_duration, const char *const *ppsz_options,
 385                      int i_options, bool b_playlist, bool b_locked )
 386 {
 387     int i_ret;
 388     input_item_t *p_input = input_item_NewExt( p_playlist, psz_uri, psz_name,
 389                                               i_options, ppsz_options,
 390                                               i_duration );
 391
 392     i_ret = playlist_AddInput( p_playlist, p_input, i_mode, i_pos, b_playlist,
 393                                b_locked );
 394     int i_id = (i_ret == VLC_SUCCESS) ? p_input->i_id : -1;
 395
 396     vlc_gc_decref( p_input );
 397
 398     return i_id;
 399 }
 400
 401 /**
 402  * Add an input item to the playlist node
 403  *
 404  * \param p_playlist the playlist to add into
 405  * \param p_input the input item to add
 406  * \param i_mode the mode used when adding
 407  * \param i_pos the position in the playlist where to add. If this is
 408  *        PLAYLIST_END the item will be added at the end of the playlist
 409  *        regardless of its size
 410  * \param b_playlist TRUE for playlist, FALSE for media library
 411  * \param b_locked TRUE if the playlist is locked
 412  * \return VLC_SUCCESS or VLC_ENOMEM or VLC_EGENERIC
 413 */
 414 int playlist_AddInput( playlist_t* p_playlist, input_item_t *p_input,
 415                        int i_mode, int i_pos, bool b_playlist,
 416                        bool b_locked )
 417 {
 418     playlist_item_t *p_item_cat, *p_item_one;
 419     if( p_playlist->b_die ) return VLC_EGENERIC;
 420     if( !pl_priv(p_playlist)->b_doing_ml )
 421         PL_DEBUG( "adding item `%s' ( %s )", p_input->psz_name,
 422                                              p_input->psz_uri );
 423
 424     PL_LOCK_IF( !b_locked );
 425
 426     /* Add to ONELEVEL */
 427     p_item_one = playlist_ItemNewFromInput( p_playlist, p_input );
 428     if( p_item_one == NULL ) return VLC_ENOMEM;
 429     AddItem( p_playlist, p_item_one,
 430              b_playlist ? p_playlist->p_local_onelevel :
 431                           p_playlist->p_ml_onelevel , i_mode, i_pos );
 432
 433     /* Add to CATEGORY */
 434     p_item_cat = playlist_ItemNewFromInput( p_playlist, p_input );
 435     if( p_item_cat == NULL ) return VLC_ENOMEM;
 436     AddItem( p_playlist, p_item_cat,
 437              b_playlist ? p_playlist->p_local_category :
 438                           p_playlist->p_ml_category , i_mode, i_pos );
 439
 440     GoAndPreparse( p_playlist, i_mode, p_item_cat, p_item_one );
 441
 442     PL_UNLOCK_IF( !b_locked );
 443     return VLC_SUCCESS;
 444 }
 445
 446 /**
 447  * Add input
 448  *
 449  * Add an input item to p_direct_parent in the category tree, and to the
 450  * matching top category in onelevel
 451  * \param p_playlist the playlist to add into
 452  * \param p_input the input item to add
 453  * \param p_direct_parent the parent item to add into
 454  * \param i_mode the mode used when adding
 455  * \param i_pos the position in the playlist where to add. If this is
 456  *        PLAYLIST_END the item will be added at the end of the playlist
 457  *        regardless of its size
 458  * \param i_cat id of the items category
 459  * \param i_one id of the item onelevel category
 460  * \param b_locked TRUE if the playlist is locked
 461  * \return VLC_SUCCESS if success, VLC_EGENERIC if fail, VLC_ENOMEM if OOM
 462  */
 463 int playlist_BothAddInput( playlist_t *p_playlist,
 464                            input_item_t *p_input,
 465                            playlist_item_t *p_direct_parent,
 466                            int i_mode, int i_pos,
 467                            int *i_cat, int *i_one, bool b_locked )
 468 {
 469     playlist_item_t *p_item_cat, *p_item_one, *p_up;
 470     int i_top;
 471     assert( p_input );
 472
 473     if( !vlc_object_alive( p_playlist ) )
 474         return VLC_EGENERIC;
 475
 476     PL_LOCK_IF( !b_locked );
 477
 478     /* Add to category */
 479     p_item_cat = playlist_ItemNewFromInput( p_playlist, p_input );
 480     if( p_item_cat == NULL ) return VLC_ENOMEM;
 481     AddItem( p_playlist, p_item_cat, p_direct_parent, i_mode, i_pos );
 482
 483     /* Add to onelevel */
 484     /** \todo make a faster case for ml import */
 485     p_item_one = playlist_ItemNewFromInput( p_playlist, p_input );
 486     if( p_item_one == NULL ) return VLC_ENOMEM;
 487
 488     p_up = p_direct_parent;
 489     while( p_up->p_parent != p_playlist->p_root_category )
 490     {
 491         p_up = p_up->p_parent;
 492     }
 493     for( i_top = 0 ; i_top < p_playlist->p_root_onelevel->i_children; i_top++ )
 494     {
 495         if( p_playlist->p_root_onelevel->pp_children[i_top]->p_input->i_id ==
 496                              p_up->p_input->i_id )
 497         {
 498             AddItem( p_playlist, p_item_one,
 499                      p_playlist->p_root_onelevel->pp_children[i_top],
 500                      i_mode, i_pos );
 501             break;
 502         }
 503     }
 504     GoAndPreparse( p_playlist, i_mode, p_item_cat, p_item_one );
 505
 506     if( i_cat ) *i_cat = p_item_cat->i_id;
 507     if( i_one ) *i_one = p_item_one->i_id;
 508
 509     PL_UNLOCK_IF( !b_locked );
 510     return VLC_SUCCESS;
 511 }
 512
 513 /**
 514  * Add an input item to a given node
 515  *
 516  * \param p_playlist the playlist to add into
 517  * \param p_input the input item to add
 518  * \param p_parent the parent item to add into
 519  * \param i_mode the mode used when addin
 520  * \param i_pos the position in the playlist where to add. If this is
 521  *        PLAYLIST_END the item will be added at the end of the playlist
 522  *        regardless of its size
 523  * \param b_locked TRUE if the playlist is locked
 524  * \return the new playlist item
 525  */
 526 playlist_item_t * playlist_NodeAddInput( playlist_t *p_playlist,
 527                                          input_item_t *p_input,
 528                                          playlist_item_t *p_parent,
 529                                          int i_mode, int i_pos,
 530                                          bool b_locked )
 531 {
 532     playlist_item_t *p_item;
 533     assert( p_input );
 534     assert( p_parent && p_parent->i_children != -1 );
 535
 536     if( p_playlist->b_die )
 537         return NULL;
 538     PL_LOCK_IF( !b_locked );
 539
 540     p_item = playlist_ItemNewFromInput( p_playlist, p_input );
 541     if( p_item == NULL ) return NULL;
 542     AddItem( p_playlist, p_item, p_parent, i_mode, i_pos );
 543
 544     PL_UNLOCK_IF( !b_locked );
 545
 546     return p_item;
 547 }
 548
 549 /*****************************************************************************
 550  * Playlist item misc operations
 551  *****************************************************************************/
 552
 553 /**
 554  * Item to node
 555  *
 556  * Transform an item to a node. Return the node in the category tree, or NULL
 557  * if not found there
 558  * This function must be entered without the playlist lock
 559  * \param p_playlist the playlist object
 560  * \param p_item the item to transform
 561  * \param b_locked TRUE if the playlist is locked
 562  * \return the item transform in a node
 563  */
 564 playlist_item_t *playlist_ItemToNode( playlist_t *p_playlist,
 565                                       playlist_item_t *p_item,
 566                                       bool b_locked )
 567 {
 568
 569     playlist_item_t *p_item_in_category;
 570     /* What we do
 571      * Find the input in CATEGORY.
 572      *  - If we find it
 573      *    - change it to node
 574      *    - we'll return it at the end
 575      *    - If we are a direct child of onelevel root, change to node, else
 576      *      delete the input from ONELEVEL
 577      *  - If we don't find it, just change to node (we are probably in VLM)
 578      *    and return NULL
 579      *
 580      * If we were in ONELEVEL, we thus retrieve the node in CATEGORY (will be
 581      * useful for later BothAddInput )
 582      */
 583
 584     PL_LOCK_IF( !b_locked );
 585
 586     /* Fast track the media library, no time to loose */
 587     if( p_item == p_playlist->p_ml_category ) {
 588         PL_UNLOCK_IF( !b_locked );
 589         return p_item;
 590     }
 591
 592     /** \todo First look if we don't already have it */
 593     p_item_in_category = playlist_ItemFindFromInputAndRoot(
 594                                             p_playlist, p_item->p_input->i_id,
 595                                             p_playlist->p_root_category,
 596                                             true );
 597
 598     if( p_item_in_category )
 599     {
 600         playlist_item_t *p_item_in_one = playlist_ItemFindFromInputAndRoot(
 601                                             p_playlist, p_item->p_input->i_id,
 602                                             p_playlist->p_root_onelevel,
 603                                             true );
 604         assert( p_item_in_one );
 605
 606         /* We already have it, and there is nothing more to do */
 607         ChangeToNode( p_playlist, p_item_in_category );
 608
 609         /* Item in one is a root, change it to node */
 610         if( p_item_in_one->p_parent == p_playlist->p_root_onelevel )
 611             ChangeToNode( p_playlist, p_item_in_one );
 612         else
 613         {
 614             playlist_item_t *p_status_item = get_current_status_item( p_playlist );
 615             playlist_item_t *p_status_node = get_current_status_node( p_playlist );
 616             if( p_item_in_one == p_status_item )
 617             {
 618                 /* We're deleting the current playlist item. Update
 619                  * the playlist object to point at the previous item
 620                  * so the playlist won't be restarted */
 621                 playlist_item_t *p_prev_status_item = NULL;
 622                 int i = 0;
 623                 while( i < p_status_node->i_children &&
 624                        p_status_node->pp_children[i] != p_status_item )
 625                 {
 626                     p_prev_status_item = p_status_node->pp_children[i];
 627                     i++;
 628                 }
 629                 if( i == p_status_node->i_children )
 630                     p_prev_status_item = NULL;
 631                 if( p_prev_status_item )
 632                     set_current_status_item( p_playlist, p_prev_status_item );
 633             }
 634             DeleteFromInput( p_playlist, p_item_in_one->p_input->i_id,
 635                              p_playlist->p_root_onelevel, false );
 636         }
 637         pl_priv(p_playlist)->b_reset_currently_playing = true;
 638         vlc_cond_signal( &pl_priv(p_playlist)->signal );
 639         var_SetInteger( p_playlist, "item-change", p_item_in_category->
 640                                                         p_input->i_id );
 641         PL_UNLOCK_IF( !b_locked );
 642         return p_item_in_category;
 643     }
 644     else
 645     {
 646         ChangeToNode( p_playlist, p_item );
 647         PL_UNLOCK_IF( !b_locked );
 648         return p_item;
 649     }
 650 }
 651
 652 /**
 653  * Find an item within a root, given its input id.
 654  *
 655  * \param p_playlist the playlist object
 656  * \param i_input_id id of the input
 657  * \param p_root root playlist item
 658  * \param b_items_only TRUE if we want the item himself
 659  * \return the first found item, or NULL if not found
 660  */
 661 playlist_item_t *playlist_ItemFindFromInputAndRoot( playlist_t *p_playlist,
 662                                                     int i_input_id,
 663                                                     playlist_item_t *p_root,
 664                                                     bool b_items_only )
 665 {
 666     int i;
 667     for( i = 0 ; i< p_root->i_children ; i++ )
 668     {
 669         if( ( b_items_only ? p_root->pp_children[i]->i_children == -1 : 1 ) &&
 670             p_root->pp_children[i]->p_input->i_id == i_input_id )
 671         {
 672             return p_root->pp_children[i];
 673         }
 674         else if( p_root->pp_children[i]->i_children >= 0 )
 675         {
 676             playlist_item_t *p_search =
 677                  playlist_ItemFindFromInputAndRoot( p_playlist, i_input_id,
 678                                                     p_root->pp_children[i],
 679                                                     b_items_only );
 680             if( p_search ) return p_search;
 681         }
 682     }
 683     return NULL;
 684 }
 685
 686
 687 static int TreeMove( playlist_t *p_playlist, playlist_item_t *p_item,
 688                      playlist_item_t *p_node, int i_newpos )
 689 {
 690     int j;
 691     playlist_item_t *p_detach = p_item->p_parent;
 692     (void)p_playlist;
 693
 694     if( p_node->i_children == -1 ) return VLC_EGENERIC;
 695
 696     for( j = 0; j < p_detach->i_children; j++ )
 697     {
 698          if( p_detach->pp_children[j] == p_item ) break;
 699     }
 700     REMOVE_ELEM( p_detach->pp_children, p_detach->i_children, j );
 701
 702     /* If j < i_newpos, we are moving the element from the top to the
 703      * down of the playlist. So when removing the element we have
 704      * to change the position as we loose one element
 705      */
 706     if( j < i_newpos )
 707         i_newpos--;
 708
 709     /* Attach to new parent */
 710     INSERT_ELEM( p_node->pp_children, p_node->i_children, i_newpos, p_item );
 711     p_item->p_parent = p_node;
 712
 713     return VLC_SUCCESS;
 714 }
 715
 716 /**
 717  * Moves an item
 718  *
 719  * This function must be entered with the playlist lock
 720  *
 721  * \param p_playlist the playlist
 722  * \param p_item the item to move
 723  * \param p_node the new parent of the item
 724  * \param i_newpos the new position under this new parent
 725  * \return VLC_SUCCESS or an error
 726  */
 727 int playlist_TreeMove( playlist_t * p_playlist, playlist_item_t *p_item,
 728                        playlist_item_t *p_node, int i_newpos )
 729 {
 730     int i_ret;
 731     PL_ASSERT_LOCKED;
 732
 733     /* Drop on a top level node. Move in the two trees */
 734     if( p_node->p_parent == p_playlist->p_root_category ||
 735         p_node->p_parent == p_playlist->p_root_onelevel )
 736     {
 737         /* Fixme: avoid useless lookups but we need some clean helpers */
 738         {
 739             /* Fixme: if we try to move a node on a top-level node, it will
 740              * fail because the node doesn't exist in onelevel and we will
 741              * do some shit in onelevel. We should recursively move all items
 742              * within the node */
 743             playlist_item_t *p_node_onelevel;
 744             playlist_item_t *p_item_onelevel;
 745             p_node_onelevel = playlist_ItemFindFromInputAndRoot( p_playlist,
 746                                                 p_node->p_input->i_id,
 747                                                 p_playlist->p_root_onelevel,
 748                                                 false );
 749             p_item_onelevel = playlist_ItemFindFromInputAndRoot( p_playlist,
 750                                                 p_item->p_input->i_id,
 751                                                 p_playlist->p_root_onelevel,
 752                                                 false );
 753             if( p_node_onelevel && p_item_onelevel )
 754                 TreeMove( p_playlist, p_item_onelevel, p_node_onelevel, i_newpos );
 755         }
 756         {
 757             playlist_item_t *p_node_category;
 758             playlist_item_t *p_item_category;
 759             p_node_category = playlist_ItemFindFromInputAndRoot( p_playlist,
 760                                                 p_node->p_input->i_id,
 761                                                 p_playlist->p_root_category,
 762                                                 false );
 763             p_item_category = playlist_ItemFindFromInputAndRoot( p_playlist,
 764                                                 p_item->p_input->i_id,
 765                                                 p_playlist->p_root_category,
 766                                                 false );
 767             if( p_node_category && p_item_category )
 768                 TreeMove( p_playlist, p_item_category, p_node_category, 0 );
 769         }
 770         i_ret = VLC_SUCCESS;
 771     }
 772     else
 773         i_ret = TreeMove( p_playlist, p_item, p_node, i_newpos );
 774     pl_priv(p_playlist)->b_reset_currently_playing = true;
 775     vlc_cond_signal( &pl_priv(p_playlist)->signal );
 776     return i_ret;
 777 }
 778
 779 /**
 780  * Send a notification that an item has been added to a node
 781  *
 782  * \param p_playlist the playlist object
 783  * \param i_item_id id of the item added
 784  * \param i_node_id id of the node in wich the item was added
 785  * \param b_signal TRUE if the function must send a signal
 786  * \return nothing
 787  */
 788 void playlist_SendAddNotify( playlist_t *p_playlist, int i_item_id,
 789                              int i_node_id, bool b_signal )
 790 {
 791     vlc_value_t val;
 792     PL_ASSERT_LOCKED;
 793
 794     playlist_add_t *p_add = (playlist_add_t *)malloc( sizeof( playlist_add_t) );
 795     if( !p_add )
 796         return;
 797
 798     p_add->i_item = i_item_id;
 799     p_add->i_node = i_node_id;
 800     val.p_address = p_add;
 801     pl_priv(p_playlist)->b_reset_currently_playing = true;
 802     if( b_signal )
 803         vlc_cond_signal( &pl_priv(p_playlist)->signal );
 804
 805     var_Set( p_playlist, "item-append", val );
 806     free( p_add );
 807 }
 808
 809 /***************************************************************************
 810  * The following functions are local
 811  ***************************************************************************/
 812
 813 /* Enqueue an item for preparsing, and play it, if needed */
 814 static void GoAndPreparse( playlist_t *p_playlist, int i_mode,
 815                            playlist_item_t *p_item_cat,
 816                            playlist_item_t *p_item_one )
 817 {
 818     PL_ASSERT_LOCKED;
 819     if( (i_mode & PLAYLIST_GO ) )
 820     {
 821         playlist_item_t *p_parent = p_item_one;
 822         playlist_item_t *p_toplay = NULL;
 823         while( p_parent )
 824         {
 825             if( p_parent == p_playlist->p_root_category )
 826             {
 827                 p_toplay = p_item_cat; break;
 828             }
 829             else if( p_parent == p_playlist->p_root_onelevel )
 830             {
 831                 p_toplay = p_item_one; break;
 832             }
 833             p_parent = p_parent->p_parent;
 834         }
 835         assert( p_toplay );
 836         pl_priv(p_playlist)->request.b_request = true;
 837         pl_priv(p_playlist)->request.i_skip = 0;
 838         pl_priv(p_playlist)->request.p_item = p_toplay;
 839         if( pl_priv(p_playlist)->p_input )
 840             input_StopThread( pl_priv(p_playlist)->p_input );
 841         pl_priv(p_playlist)->request.i_status = PLAYLIST_RUNNING;
 842         vlc_cond_signal( &pl_priv(p_playlist)->signal );
 843     }
 844     /* Preparse if PREPARSE or SPREPARSE & not enough meta */
 845     char *psz_artist = input_item_GetArtist( p_item_cat->p_input );
 846     char *psz_album = input_item_GetAlbum( p_item_cat->p_input );
 847     if( pl_priv(p_playlist)->b_auto_preparse &&
 848           (i_mode & PLAYLIST_PREPARSE ||
 849           ( i_mode & PLAYLIST_SPREPARSE &&
 850             ( EMPTY_STR( psz_artist ) || ( EMPTY_STR( psz_album ) ) )
 851           ) ) )
 852         playlist_PreparseEnqueue( p_playlist, p_item_cat->p_input, pl_Locked );
 853     /* If we already have it, signal it */
 854     else if( !EMPTY_STR( psz_artist ) && !EMPTY_STR( psz_album ) )
 855         input_item_SetPreparsed( p_item_cat->p_input, true );
 856     free( psz_artist );
 857     free( psz_album );
 858 }
 859
 860 /* Add the playlist item to the requested node and fire a notification */
 861 static void AddItem( playlist_t *p_playlist, playlist_item_t *p_item,
 862                      playlist_item_t *p_node, int i_mode, int i_pos )
 863 {
 864     PL_ASSERT_LOCKED;
 865     ARRAY_APPEND(p_playlist->items, p_item);
 866     ARRAY_APPEND(p_playlist->all_items, p_item);
 867
 868     if( i_pos == PLAYLIST_END )
 869         playlist_NodeAppend( p_playlist, p_item, p_node );
 870     else
 871         playlist_NodeInsert( p_playlist, p_item, p_node, i_pos );
 872
 873     if( !pl_priv(p_playlist)->b_doing_ml )
 874         playlist_SendAddNotify( p_playlist, p_item->i_id, p_node->i_id,
 875                                  !( i_mode & PLAYLIST_NO_REBUILD ) );
 876 }
 877
 878 /* Actually convert an item to a node */
 879 static void ChangeToNode( playlist_t *p_playlist, playlist_item_t *p_item )
 880 {
 881     int i;
 882     if( p_item->i_children == -1 )
 883         p_item->i_children = 0;
 884
 885     /* Remove it from the array of available items */
 886     ARRAY_BSEARCH( p_playlist->items,->i_id, int, p_item->i_id, i );
 887     if( i != -1 )
 888         ARRAY_REMOVE( p_playlist->items, i );
 889 }
 890
 891 /* Do the actual removal */
 892 static int DeleteInner( playlist_t * p_playlist, playlist_item_t *p_item,
 893                         bool b_stop )
 894 {
 895     int i;
 896     int i_id = p_item->i_id;
 897     PL_ASSERT_LOCKED;
 898
 899     if( p_item->i_children > -1 )
 900     {
 901         return playlist_NodeDelete( p_playlist, p_item, true, false );
 902     }
 903     pl_priv(p_playlist)->b_reset_currently_playing = true;
 904     var_SetInteger( p_playlist, "item-deleted", i_id );
 905
 906     /* Remove the item from the bank */
 907     ARRAY_BSEARCH( p_playlist->all_items,->i_id, int, i_id, i );
 908     if( i != -1 )
 909         ARRAY_REMOVE( p_playlist->all_items, i );
 910
 911     ARRAY_BSEARCH( p_playlist->items,->i_id, int, i_id, i );
 912     if( i != -1 )
 913         ARRAY_REMOVE( p_playlist->items, i );
 914
 915     /* Check if it is the current item */
 916     if( get_current_status_item( p_playlist ) == p_item )
 917     {
 918         /* Hack we don't call playlist_Control for lock reasons */
 919         if( b_stop )
 920         {
 921             pl_priv(p_playlist)->request.i_status = PLAYLIST_STOPPED;
 922             pl_priv(p_playlist)->request.b_request = true;
 923             pl_priv(p_playlist)->request.p_item = NULL;
 924             msg_Info( p_playlist, "stopping playback" );
 925             vlc_cond_signal( &pl_priv(p_playlist)->signal );
 926         }
 927     }
 928
 929     PL_DEBUG( "deleting item `%s'", p_item->p_input->psz_name );
 930
 931     /* Remove the item from its parent */
 932     playlist_NodeRemoveItem( p_playlist, p_item, p_item->p_parent );
 933
 934     playlist_ItemRelease( p_item );
 935
 936     return VLC_SUCCESS;
 937 }