8ec3924660a22e4a5de8fe4e3131cbab7faeabc2
[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 #include <vlc/vlc.h>
25 #include <assert.h>
26 #include <vlc_playlist.h>
27 #include "playlist_internal.h"
28
29 static void AddItem( playlist_t *p_playlist, playlist_item_t *p_item,
30                      playlist_item_t *p_node, int i_mode, int i_pos );
31 static void GoAndPreparse( playlist_t *p_playlist, int i_mode,
32                            playlist_item_t *, playlist_item_t * );
33 static void ChangeToNode( playlist_t *p_playlist, playlist_item_t *p_item );
34 static int DeleteInner( playlist_t * p_playlist, playlist_item_t *p_item,
35                         vlc_bool_t b_stop );
36
37 /*****************************************************************************
38  * An input item has gained a subitem (Event Callback)
39  *****************************************************************************/
40 static void input_item_subitem_added( const vlc_event_t * p_event,
41                                       void * user_data )
42 {
43     playlist_item_t *p_parent_playlist_item = user_data;
44     playlist_t * p_playlist = p_parent_playlist_item->p_playlist;
45     input_item_t * p_parent, * p_child;
46     playlist_item_t * p_child_in_category;
47     playlist_item_t * p_item_in_category;
48     vlc_bool_t b_play;
49
50     p_parent = p_event->p_obj;
51     p_child = p_event->u.input_item_subitem_added.p_new_child;
52
53     PL_LOCK;
54     b_play = var_CreateGetBool( p_playlist, "playlist-autostart" );
55
56     /* This part is really hakish, but this playlist system isn't simple */
57     /* First check if we haven't already added the item as we are
58      * listening using the onelevel and the category representent
59      * (Because of the playlist design) */
60     p_child_in_category = playlist_ItemFindFromInputAndRoot(
61                             p_playlist, p_child->i_id,
62                             p_playlist->p_root_category,
63                             VLC_FALSE /* Only non-node */ );
64
65     if( !p_child_in_category )
66     {
67         /* Then, transform to a node if needed */
68         p_item_in_category = playlist_ItemFindFromInputAndRoot(
69                                 p_playlist, p_parent->i_id,
70                                 p_playlist->p_root_category,
71                                 VLC_FALSE /* Only non-node */ );
72         if( !p_item_in_category )
73         {
74             /* Item may have been removed */
75             PL_UNLOCK;
76             return;
77         }
78
79         b_play = b_play && p_item_in_category == p_playlist->status.p_item;
80
81         /* If this item is already a node don't transform it */
82         if( p_item_in_category->i_children == -1 )
83         {
84             p_item_in_category = playlist_ItemToNode( p_playlist,
85                     p_item_in_category, VLC_TRUE );
86             p_item_in_category->p_input->i_type = ITEM_TYPE_PLAYLIST;
87         }
88  
89         playlist_BothAddInput( p_playlist, p_child, p_item_in_category,
90                 PLAYLIST_APPEND | PLAYLIST_SPREPARSE , PLAYLIST_END,
91                 NULL, NULL,  VLC_TRUE );
92
93         if( b_play )
94         {
95             playlist_Control( p_playlist, PLAYLIST_VIEWPLAY,
96                           VLC_TRUE, p_item_in_category, NULL );
97         }
98     }
99  
100     PL_UNLOCK;
101
102 }
103
104 /*****************************************************************************
105  * Listen to vlc_InputItemAddSubItem event
106  *****************************************************************************/
107 static void install_input_item_observer( playlist_item_t * p_item,
108                                          input_item_t * p_input )
109 {
110     vlc_event_attach( &p_input->event_manager, vlc_InputItemSubItemAdded,
111                       input_item_subitem_added,
112                       p_item );
113 }
114
115 static void uninstall_input_item_observer( playlist_item_t * p_item,
116                                            input_item_t * p_input )
117 {
118     vlc_event_detach( &p_input->event_manager, vlc_InputItemSubItemAdded,
119                       input_item_subitem_added,
120                       p_item );
121  
122 }
123
124 /*****************************************************************************
125  * Playlist item creation
126  *****************************************************************************/
127 playlist_item_t * playlist_ItemNewWithType( vlc_object_t *p_obj,
128                                             const char *psz_uri,
129                                             const char *psz_name,
130                                             int i_options,
131                                             const char *const *ppsz_options,
132                                             int i_duration, int i_type )
133 {
134     input_item_t *p_input;
135     if( psz_uri == NULL ) return NULL;
136     p_input = input_ItemNewWithType( p_obj, psz_uri,
137                                      psz_name, i_options, ppsz_options,
138                                      i_duration, i_type );
139     return playlist_ItemNewFromInput( p_obj, p_input );
140 }
141
142 playlist_item_t *__playlist_ItemNewFromInput( vlc_object_t *p_obj,
143                                               input_item_t *p_input )
144 {
145     DECMALLOC_NULL( p_item, playlist_item_t );
146     playlist_t *p_playlist = pl_Yield( p_obj );
147
148     p_item->p_input = p_input;
149     vlc_gc_incref( p_item->p_input );
150
151     p_item->i_id = ++p_playlist->i_last_playlist_id;
152
153     p_item->p_parent = NULL;
154     p_item->i_children = -1;
155     p_item->pp_children = NULL;
156     p_item->i_flags = 0;
157     p_item->p_playlist = p_playlist;
158
159     install_input_item_observer( p_item, p_input );
160
161     pl_Release( p_item->p_playlist );
162
163     return p_item;
164 }
165
166 /***************************************************************************
167  * Playlist item destruction
168  ***************************************************************************/
169
170 /** Delete a playlist item and detach its input item */
171 int playlist_ItemDelete( playlist_item_t *p_item )
172 {
173     uninstall_input_item_observer( p_item, p_item->p_input );
174
175     vlc_gc_decref( p_item->p_input );
176     free( p_item );
177     return VLC_SUCCESS;
178 }
179
180 /** Remove an input item when it appears from a root playlist item */
181 static int DeleteFromInput( playlist_t *p_playlist, int i_input_id,
182                             playlist_item_t *p_root, vlc_bool_t b_do_stop )
183 {
184     int i;
185     for( i = 0 ; i< p_root->i_children ; i++ )
186     {
187         if( p_root->pp_children[i]->i_children == -1 &&
188             p_root->pp_children[i]->p_input->i_id == i_input_id )
189         {
190             DeleteInner( p_playlist, p_root->pp_children[i], b_do_stop );
191             return VLC_SUCCESS;
192         }
193         else if( p_root->pp_children[i]->i_children >= 0 )
194         {
195             int i_ret = DeleteFromInput( p_playlist, i_input_id,
196                                          p_root->pp_children[i], b_do_stop );
197             if( i_ret == VLC_SUCCESS ) return VLC_SUCCESS;
198         }
199     }
200     return VLC_EGENERIC;
201 }
202
203 /** Remove an input item when it appears from a root playlist item */
204 int playlist_DeleteInputInParent( playlist_t *p_playlist, int i_input_id,
205                                   playlist_item_t *p_root, vlc_bool_t b_locked )
206 {
207     int i_ret;
208     if( !b_locked ) PL_LOCK;
209     i_ret = DeleteFromInput( p_playlist, i_input_id,
210                              p_root, VLC_TRUE );
211     if( !b_locked ) PL_UNLOCK;
212     return i_ret;
213 }
214
215 /** Remove an input item from ONELEVEL and CATEGORY */
216 int playlist_DeleteFromInput( playlist_t *p_playlist, int i_input_id,
217                               vlc_bool_t b_locked )
218 {
219     int i_ret1, i_ret2;
220     if( !b_locked ) PL_LOCK;
221     i_ret1 = DeleteFromInput( p_playlist, i_input_id,
222                              p_playlist->p_root_category, VLC_TRUE );
223     i_ret2 = DeleteFromInput( p_playlist, i_input_id,
224                      p_playlist->p_root_onelevel, VLC_TRUE );
225     if( !b_locked ) PL_UNLOCK;
226     return ( i_ret1 == VLC_SUCCESS || i_ret2 == VLC_SUCCESS ) ?
227                             VLC_SUCCESS : VLC_ENOITEM;
228 }
229
230 void playlist_Clear( playlist_t * p_playlist, vlc_bool_t b_locked )
231 {
232     if( !b_locked ) PL_LOCK;
233     playlist_NodeEmpty( p_playlist, p_playlist->p_local_category, VLC_TRUE );
234     playlist_NodeEmpty( p_playlist, p_playlist->p_local_onelevel, VLC_TRUE );
235     if( !b_locked ) PL_UNLOCK;
236 }
237
238 /** Remove a playlist item from the playlist, given its id
239  * This function is to be used only by the playlist */
240 int playlist_DeleteFromItemId( playlist_t *p_playlist, int i_id )
241 {
242     playlist_item_t *p_item = playlist_ItemGetById( p_playlist, i_id,
243                                                     VLC_TRUE );
244     if( !p_item ) return VLC_EGENERIC;
245     return DeleteInner( p_playlist, p_item, VLC_TRUE );
246 }
247
248 /***************************************************************************
249  * Playlist item addition
250  ***************************************************************************/
251 /** Add an item to the playlist or the media library
252  * \param p_playlist the playlist to add into
253  * \param psz_uri the mrl to add to the playlist
254  * \param psz_name a text giving a name or description of this item
255  * \param i_mode the mode used when adding
256  * \param i_pos the position in the playlist where to add. If this is
257  *        PLAYLIST_END the item will be added at the end of the playlist
258  *        regardless of its size
259  * \param b_playlist TRUE for playlist, FALSE for media library
260  * \return The id of the playlist item
261  */
262 int playlist_Add( playlist_t *p_playlist, const char *psz_uri,
263                   const char *psz_name, int i_mode, int i_pos,
264                   vlc_bool_t b_playlist, vlc_bool_t b_locked )
265 {
266     return playlist_AddExt( p_playlist, psz_uri, psz_name,
267                             i_mode, i_pos, -1, NULL, 0, b_playlist, b_locked );
268 }
269
270 /**
271  * Add a MRL into the playlist or the media library, duration and options given
272  *
273  * \param p_playlist the playlist to add into
274  * \param psz_uri the mrl to add to the playlist
275  * \param psz_name a text giving a name or description of this item
276  * \param i_mode the mode used when adding
277  * \param i_pos the position in the playlist where to add. If this is
278  *        PLAYLIST_END the item will be added at the end of the playlist
279  *        regardless of its size
280  * \param i_duration length of the item in milliseconds.
281  * \param ppsz_options an array of options
282  * \param i_options the number of options
283  * \param b_playlist TRUE for playlist, FALSE for media library
284  * \return The id of the playlist item
285 */
286 int playlist_AddExt( playlist_t *p_playlist, const char * psz_uri,
287                      const char *psz_name, int i_mode, int i_pos,
288                      mtime_t i_duration, const char *const *ppsz_options,
289                      int i_options, vlc_bool_t b_playlist, vlc_bool_t b_locked )
290 {
291     int i_ret;
292     input_item_t *p_input = input_ItemNewExt( p_playlist, psz_uri, psz_name,
293                                               i_options, ppsz_options,
294                                               i_duration );
295
296     i_ret = playlist_AddInput( p_playlist, p_input, i_mode, i_pos, b_playlist,
297                                b_locked );
298     int i_id = i_ret == VLC_SUCCESS ? p_input->i_id : -1;
299
300     vlc_gc_decref( p_input );
301
302     return i_id;
303 }
304
305 /** Add an input item to the playlist node */
306 int playlist_AddInput( playlist_t* p_playlist, input_item_t *p_input,
307                        int i_mode, int i_pos, vlc_bool_t b_playlist,
308                        vlc_bool_t b_locked )
309 {
310     playlist_item_t *p_item_cat, *p_item_one;
311
312     if( !p_playlist->b_doing_ml )
313         PL_DEBUG( "adding item `%s' ( %s )", p_input->psz_name,
314                                              p_input->psz_uri );
315
316     if( !b_locked ) PL_LOCK;
317
318     /* Add to ONELEVEL */
319     p_item_one = playlist_ItemNewFromInput( p_playlist, p_input );
320     if( p_item_one == NULL ) return VLC_ENOMEM;
321     AddItem( p_playlist, p_item_one,
322              b_playlist ? p_playlist->p_local_onelevel :
323                           p_playlist->p_ml_onelevel , i_mode, i_pos );
324
325     /* Add to CATEGORY */
326     p_item_cat = playlist_ItemNewFromInput( p_playlist, p_input );
327     if( p_item_cat == NULL ) return VLC_ENOMEM;
328     AddItem( p_playlist, p_item_cat,
329              b_playlist ? p_playlist->p_local_category :
330                           p_playlist->p_ml_category , i_mode, i_pos );
331
332     GoAndPreparse( p_playlist, i_mode, p_item_cat, p_item_one );
333
334     if( !b_locked ) PL_UNLOCK;
335     return VLC_SUCCESS;
336 }
337
338 /** Add an input item to p_direct_parent in the category tree, and to the
339  *  matching top category in onelevel **/
340 int playlist_BothAddInput( playlist_t *p_playlist,
341                            input_item_t *p_input,
342                            playlist_item_t *p_direct_parent,
343                            int i_mode, int i_pos,
344                            int *i_cat, int *i_one, vlc_bool_t b_locked )
345 {
346     playlist_item_t *p_item_cat, *p_item_one, *p_up;
347     int i_top;
348     assert( p_input );
349     if( !b_locked ) PL_LOCK;
350
351     /* Add to category */
352     p_item_cat = playlist_ItemNewFromInput( p_playlist, p_input );
353     if( p_item_cat == NULL ) return VLC_ENOMEM;
354     AddItem( p_playlist, p_item_cat, p_direct_parent, i_mode, i_pos );
355
356     /* Add to onelevel */
357     /** \todo make a faster case for ml import */
358     p_item_one = playlist_ItemNewFromInput( p_playlist, p_input );
359     if( p_item_one == NULL ) return VLC_ENOMEM;
360
361     p_up = p_direct_parent;
362     while( p_up->p_parent != p_playlist->p_root_category )
363     {
364         p_up = p_up->p_parent;
365     }
366     for( i_top = 0 ; i_top < p_playlist->p_root_onelevel->i_children; i_top++ )
367     {
368         if( p_playlist->p_root_onelevel->pp_children[i_top]->p_input->i_id ==
369                              p_up->p_input->i_id )
370         {
371             AddItem( p_playlist, p_item_one,
372                      p_playlist->p_root_onelevel->pp_children[i_top],
373                      i_mode, i_pos );
374             break;
375         }
376     }
377     GoAndPreparse( p_playlist, i_mode, p_item_cat, p_item_one );
378
379     if( i_cat ) *i_cat = p_item_cat->i_id;
380     if( i_one ) *i_one = p_item_one->i_id;
381
382     if( !b_locked ) PL_UNLOCK;
383     return VLC_SUCCESS;
384 }
385
386 /** Add an input item to a given node */
387 playlist_item_t * playlist_NodeAddInput( playlist_t *p_playlist,
388                                          input_item_t *p_input,
389                                          playlist_item_t *p_parent,
390                                          int i_mode, int i_pos,
391                                          vlc_bool_t b_locked )
392 {
393     playlist_item_t *p_item;
394     assert( p_input );
395     assert( p_parent && p_parent->i_children != -1 );
396
397     if( !b_locked ) PL_LOCK;
398
399     p_item = playlist_ItemNewFromInput( p_playlist, p_input );
400     if( p_item == NULL ) return NULL;
401     AddItem( p_playlist, p_item, p_parent, i_mode, i_pos );
402
403     if( !b_locked ) PL_UNLOCK;
404
405     return p_item;
406 }
407
408 /*****************************************************************************
409  * Playlist item misc operations
410  *****************************************************************************/
411
412 /**
413  * Transform an item to a node. Return the node in the category tree, or NULL
414  * if not found there
415  * This function must be entered without the playlist lock
416  */
417 playlist_item_t *playlist_ItemToNode( playlist_t *p_playlist,
418                                       playlist_item_t *p_item,
419                                       vlc_bool_t b_locked )
420 {
421
422     playlist_item_t *p_item_in_category;
423     /* What we do
424      * Find the input in CATEGORY.
425      *  - If we find it
426      *    - change it to node
427      *    - we'll return it at the end
428      *    - If we are a direct child of onelevel root, change to node, else
429      *      delete the input from ONELEVEL
430      *  - If we don't find it, just change to node (we are probably in VLM)
431      *    and return NULL
432      *
433      * If we were in ONELEVEL, we thus retrieve the node in CATEGORY (will be
434      * useful for later BothAddInput )
435      */
436
437     if( !b_locked ) PL_LOCK;
438
439     /* Fast track the media library, no time to loose */
440     if( p_item == p_playlist->p_ml_category ) {
441         if( !b_locked ) PL_UNLOCK;
442         return p_item;
443     }
444
445     /** \todo First look if we don't already have it */
446     p_item_in_category = playlist_ItemFindFromInputAndRoot(
447                                             p_playlist, p_item->p_input->i_id,
448                                             p_playlist->p_root_category,
449                                             VLC_TRUE );
450
451     if( p_item_in_category )
452     {
453         playlist_item_t *p_item_in_one = playlist_ItemFindFromInputAndRoot(
454                                             p_playlist, p_item->p_input->i_id,
455                                             p_playlist->p_root_onelevel,
456                                             VLC_TRUE );
457         assert( p_item_in_one );
458
459         /* We already have it, and there is nothing more to do */
460         ChangeToNode( p_playlist, p_item_in_category );
461
462         /* Item in one is a root, change it to node */
463         if( p_item_in_one->p_parent == p_playlist->p_root_onelevel )
464             ChangeToNode( p_playlist, p_item_in_one );
465         else
466         {
467             DeleteFromInput( p_playlist, p_item_in_one->p_input->i_id,
468                              p_playlist->p_root_onelevel, VLC_FALSE );
469         }
470         p_playlist->b_reset_currently_playing = VLC_TRUE;
471         vlc_cond_signal( &p_playlist->object_wait );
472         var_SetInteger( p_playlist, "item-change", p_item_in_category->
473                                                         p_input->i_id );
474         if( !b_locked ) PL_UNLOCK;
475         return p_item_in_category;
476     }
477     else
478     {
479         ChangeToNode( p_playlist, p_item );
480         if( !b_locked ) PL_UNLOCK;
481         return NULL;
482     }
483 }
484
485 /** Find an item within a root, given its input id.
486  * \return the first found item, or NULL if not found
487  */
488 playlist_item_t *playlist_ItemFindFromInputAndRoot( playlist_t *p_playlist,
489                                                     int i_input_id,
490                                                     playlist_item_t *p_root,
491                                                     vlc_bool_t b_items_only )
492 {
493     int i;
494     for( i = 0 ; i< p_root->i_children ; i++ )
495     {
496         if( ( b_items_only ? p_root->pp_children[i]->i_children == -1 : 1 ) &&
497             p_root->pp_children[i]->p_input->i_id == i_input_id )
498         {
499             return p_root->pp_children[i];
500         }
501         else if( p_root->pp_children[i]->i_children >= 0 )
502         {
503             playlist_item_t *p_search =
504                  playlist_ItemFindFromInputAndRoot( p_playlist, i_input_id,
505                                                     p_root->pp_children[i],
506                                                     b_items_only );
507             if( p_search ) return p_search;
508         }
509     }
510     return NULL;
511 }
512
513
514 static int TreeMove( playlist_t *p_playlist, playlist_item_t *p_item,
515                      playlist_item_t *p_node, int i_newpos )
516 {
517     int j;
518     playlist_item_t *p_detach = p_item->p_parent;
519     (void)p_playlist;
520
521     if( p_node->i_children == -1 ) return VLC_EGENERIC;
522
523     for( j = 0; j < p_detach->i_children; j++ )
524     {
525          if( p_detach->pp_children[j] == p_item ) break;
526     }
527     REMOVE_ELEM( p_detach->pp_children, p_detach->i_children, j );
528
529     /* Attach to new parent */
530     INSERT_ELEM( p_node->pp_children, p_node->i_children, i_newpos, p_item );
531     p_item->p_parent = p_node;
532
533     return VLC_SUCCESS;
534 }
535
536 /**
537  * Moves an item
538  *
539  * This function must be entered with the playlist lock
540  *
541  * \param p_playlist the playlist
542  * \param p_item the item to move
543  * \param p_node the new parent of the item
544  * \param i_newpos the new position under this new parent
545  * \return VLC_SUCCESS or an error
546  */
547 int playlist_TreeMove( playlist_t * p_playlist, playlist_item_t *p_item,
548                        playlist_item_t *p_node, int i_newpos )
549 {
550     int i_ret;
551     /* Drop on a top level node. Move in the two trees */
552     if( p_node->p_parent == p_playlist->p_root_category ||
553         p_node->p_parent == p_playlist->p_root_onelevel )
554     {
555         /* Fixme: avoid useless lookups but we need some clean helpers */
556         {
557             /* Fixme: if we try to move a node on a top-level node, it will
558              * fail because the node doesn't exist in onelevel and we will
559              * do some shit in onelevel. We should recursively move all items
560              * within the node */
561             playlist_item_t *p_node_onelevel;
562             playlist_item_t *p_item_onelevel;
563             p_node_onelevel = playlist_ItemFindFromInputAndRoot( p_playlist,
564                                                 p_node->p_input->i_id,
565                                                 p_playlist->p_root_onelevel,
566                                                 VLC_FALSE );
567             p_item_onelevel = playlist_ItemFindFromInputAndRoot( p_playlist,
568                                                 p_item->p_input->i_id,
569                                                 p_playlist->p_root_onelevel,
570                                                 VLC_FALSE );
571             if( p_node_onelevel && p_item_onelevel )
572                 TreeMove( p_playlist, p_item_onelevel, p_node_onelevel, 0 );
573         }
574         {
575             playlist_item_t *p_node_category;
576             playlist_item_t *p_item_category;
577             p_node_category = playlist_ItemFindFromInputAndRoot( p_playlist,
578                                                 p_node->p_input->i_id,
579                                                 p_playlist->p_root_category,
580                                                 VLC_FALSE );
581             p_item_category = playlist_ItemFindFromInputAndRoot( p_playlist,
582                                                 p_item->p_input->i_id,
583                                                 p_playlist->p_root_category,
584                                                 VLC_FALSE );
585             if( p_node_category && p_item_category )
586                 TreeMove( p_playlist, p_item_category, p_node_category, 0 );
587         }
588         i_ret = VLC_SUCCESS;
589     }
590     else
591         i_ret = TreeMove( p_playlist, p_item, p_node, i_newpos );
592     p_playlist->b_reset_currently_playing = VLC_TRUE;
593     vlc_cond_signal( &p_playlist->object_wait );
594     return i_ret;
595 }
596
597 /** Send a notification that an item has been added to a node */
598 void playlist_SendAddNotify( playlist_t *p_playlist, int i_item_id,
599                              int i_node_id, vlc_bool_t b_signal )
600 {
601     vlc_value_t val;
602     playlist_add_t *p_add = (playlist_add_t *)malloc(sizeof( playlist_add_t));
603     p_add->i_item = i_item_id;
604     p_add->i_node = i_node_id;
605     val.p_address = p_add;
606     p_playlist->b_reset_currently_playing = VLC_TRUE;
607     if( b_signal )
608         vlc_cond_signal( &p_playlist->object_wait );
609     var_Set( p_playlist, "item-append", val );
610     free( p_add );
611 }
612
613 /*****************************************************************************
614  * Playlist item accessors
615  *****************************************************************************/
616
617 /** Set the name of a playlist item */
618 int playlist_ItemSetName( playlist_item_t *p_item, const char *psz_name )
619 {
620     if( psz_name && p_item )
621     {
622         input_item_SetName( p_item->p_input, psz_name );
623         return VLC_SUCCESS;
624     }
625     return VLC_EGENERIC;
626 }
627
628 /***************************************************************************
629  * The following functions are local
630  ***************************************************************************/
631
632 /* Enqueue an item for preparsing, and play it, if needed */
633 static void GoAndPreparse( playlist_t *p_playlist, int i_mode,
634                            playlist_item_t *p_item_cat,
635                            playlist_item_t *p_item_one )
636 {
637     if( (i_mode & PLAYLIST_GO ) )
638     {
639         playlist_item_t *p_parent = p_item_one;
640         playlist_item_t *p_toplay = NULL;
641         while( p_parent )
642         {
643             if( p_parent == p_playlist->p_root_category )
644             {
645                 p_toplay = p_item_cat; break;
646             }
647             else if( p_parent == p_playlist->p_root_onelevel )
648             {
649                 p_toplay = p_item_one; break;
650             }
651             p_parent = p_parent->p_parent;
652         }
653         assert( p_toplay );
654         p_playlist->request.b_request = VLC_TRUE;
655         p_playlist->request.i_skip = 0;
656         p_playlist->request.p_item = p_toplay;
657         if( p_playlist->p_input )
658             input_StopThread( p_playlist->p_input );
659         p_playlist->request.i_status = PLAYLIST_RUNNING;
660         vlc_cond_signal( &p_playlist->object_wait );
661     }
662     /* Preparse if PREPARSE or SPREPARSE & not enough meta */
663     char *psz_artist = input_item_GetArtist( p_item_cat->p_input );
664     char *psz_album = input_item_GetAlbum( p_item_cat->p_input );
665     if( p_playlist->b_auto_preparse &&
666           (i_mode & PLAYLIST_PREPARSE ||
667           ( i_mode & PLAYLIST_SPREPARSE &&
668             ( EMPTY_STR( psz_artist ) || ( EMPTY_STR( psz_album ) ) )
669           ) ) )
670         playlist_PreparseEnqueue( p_playlist, p_item_cat->p_input );
671     /* If we already have it, signal it */
672     else if( !EMPTY_STR( psz_artist ) && !EMPTY_STR( psz_album ) )
673         input_item_SetPreparsed( p_item_cat->p_input, VLC_TRUE );
674     free( psz_artist );
675     free( psz_album );
676 }
677
678 /* Add the playlist item to the requested node and fire a notification */
679 static void AddItem( playlist_t *p_playlist, playlist_item_t *p_item,
680                      playlist_item_t *p_node, int i_mode, int i_pos )
681 {
682     ARRAY_APPEND(p_playlist->items, p_item);
683     ARRAY_APPEND(p_playlist->all_items, p_item);
684     p_playlist->i_enabled ++;
685
686     if( i_pos == PLAYLIST_END )
687         playlist_NodeAppend( p_playlist, p_item, p_node );
688     else
689         playlist_NodeInsert( p_playlist, p_item, p_node, i_pos );
690
691     if( !p_playlist->b_doing_ml )
692         playlist_SendAddNotify( p_playlist, p_item->i_id, p_node->i_id,
693                                  !( i_mode & PLAYLIST_NO_REBUILD ) );
694 }
695
696 /* Actually convert an item to a node */
697 static void ChangeToNode( playlist_t *p_playlist, playlist_item_t *p_item )
698 {
699     int i;
700     if( p_item->i_children == -1 )
701         p_item->i_children = 0;
702
703     /* Remove it from the array of available items */
704     ARRAY_BSEARCH( p_playlist->items,->i_id, int, p_item->i_id, i );
705     if( i != -1 )
706         ARRAY_REMOVE( p_playlist->items, i );
707 }
708
709 /* Do the actual removal */
710 static int DeleteInner( playlist_t * p_playlist, playlist_item_t *p_item,
711                         vlc_bool_t b_stop )
712 {
713     int i;
714     int i_id = p_item->i_id;
715     vlc_bool_t b_delay_deletion = VLC_FALSE;
716
717     if( p_item->i_children > -1 )
718     {
719         return playlist_NodeDelete( p_playlist, p_item, VLC_TRUE, VLC_FALSE );
720     }
721     p_playlist->b_reset_currently_playing = VLC_TRUE;
722     var_SetInteger( p_playlist, "item-deleted", i_id );
723
724     /* Remove the item from the bank */
725     ARRAY_BSEARCH( p_playlist->all_items,->i_id, int, i_id, i );
726     if( i != -1 )
727         ARRAY_REMOVE( p_playlist->all_items, i );
728
729     /* Check if it is the current item */
730     if( p_playlist->status.p_item == p_item )
731     {
732         /* Hack we don't call playlist_Control for lock reasons */
733         if( b_stop )
734         {
735             p_playlist->request.i_status = PLAYLIST_STOPPED;
736             p_playlist->request.b_request = VLC_TRUE;
737             p_playlist->request.p_item = NULL;
738             msg_Info( p_playlist, "stopping playback" );
739             vlc_cond_signal( &p_playlist->object_wait );
740         }
741         b_delay_deletion = VLC_TRUE;
742     }
743
744     PL_DEBUG( "deleting item `%s'", p_item->p_input->psz_name );
745
746     /* Remove the item from its parent */
747     playlist_NodeRemoveItem( p_playlist, p_item, p_item->p_parent );
748
749     if( !b_delay_deletion )
750         playlist_ItemDelete( p_item );
751     else
752     {
753         PL_DEBUG( "marking %s for further deletion", PLI_NAME( p_item ) );
754         p_item->i_flags |= PLAYLIST_REMOVE_FLAG;
755     }
756
757     return VLC_SUCCESS;
758 }