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