]> git.sesse.net Git - vlc/blob - include/vlc_playlist.h
Interaction facility (Refs:#27)
[vlc] / include / vlc_playlist.h
1 /*****************************************************************************
2  * vlc_playlist.h : Playlist functions
3  *****************************************************************************
4  * Copyright (C) 1999-2004 the VideoLAN team
5  * $Id$
6  *
7  * Authors: Samuel Hocevar <sam@zoy.org>
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17  * GNU General Public License for more details.
18  *
19  * You should have received a copy of the GNU General Public License
20  * along with this program; if not, write to the Free Software
21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
22  *****************************************************************************/
23
24 /**
25  *  \file
26  *  This file contain structures and function prototypes related
27  *  to the playlist in vlc
28  */
29
30 /**
31  * \defgroup vlc_playlist Playlist
32  * Brief description. Longer description
33  * @{
34  */
35
36 /**
37  * playlist export helper structure
38  */
39 struct playlist_export_t
40 {
41     char *psz_filename;
42     FILE *p_file;
43 };
44
45 struct item_parent_t
46 {
47     int i_view;
48     playlist_item_t *p_parent;
49 };
50
51 /**
52  * playlist item / node
53  * \see playlist_t
54  */
55 struct playlist_item_t
56 {
57     input_item_t           input;       /**< input item descriptor */
58
59     /* Tree specific fields */
60     int                    i_children;  /**< Number of children
61                                              -1 if not a node */
62     playlist_item_t      **pp_children; /**< Children nodes/items */
63     int                    i_parents;   /**< Number of parents */
64     struct item_parent_t **pp_parents;  /**< Parents */
65     int                    i_serial;    /**< Has this node been updated ? */
66
67     uint8_t                i_flags;     /**< Flags */
68
69
70     int        i_nb_played;       /**< How many times was this item played ? */
71
72     /* LEGACY FIELDS */
73     vlc_bool_t b_autodeletion;    /**< Indicates whther this item is to
74                                    * be deleted after playback. True mean
75                                    * that this item is to be deleted
76                                    * after playback, false otherwise */
77     vlc_bool_t b_enabled;         /**< Indicates whether this item is to be
78                                    * played or skipped */
79     /* END LEGACY FIELDS */
80 };
81
82 #define PLAYLIST_SAVE_FLAG      0x01     /**< Must it be saved */
83 #define PLAYLIST_SKIP_FLAG      0x02     /**< Must playlist skip after it ? */
84 #define PLAYLIST_ENA_FLAG       0x04     /**< Is it enabled ? */
85 #define PLAYLIST_DEL_FLAG       0x08     /**< Autodelete ? */
86 #define PLAYLIST_RO_FLAG        0x10    /**< Write-enabled ? */
87 #define PLAYLIST_REMOVE_FLAG    0x20    /**< Remove this item at the end */
88
89 /**
90  * playlist view
91  * \see playlist_t
92 */
93 struct playlist_view_t
94 {
95     char            *   psz_name;        /**< View name */
96     int                 i_id;            /**< Identifier for the view */
97     playlist_item_t *   p_root;          /**< Root node */
98 };
99
100
101 /**
102  * predefined views
103  *
104  */
105 #define VIEW_CATEGORY 1
106 #define VIEW_SIMPLE   2
107 #define VIEW_ALL      3
108 #define VIEW_FIRST_SORTED  4
109 #define VIEW_S_AUTHOR 4
110 #define VIEW_S_GENRE 5
111 #define VIEW_S_ALBUM  6
112
113 #define VIEW_LAST_SORTED  10
114
115 #define VIEW_FIRST_CUSTOM 100
116
117 /**
118  * Playlist status
119  */
120 typedef enum { PLAYLIST_STOPPED,PLAYLIST_RUNNING,PLAYLIST_PAUSED } playlist_status_t;
121
122
123 struct services_discovery_t
124 {
125     VLC_COMMON_MEMBERS
126     char *psz_module;
127
128     module_t *p_module;
129
130     services_discovery_sys_t *p_sys;
131     void (*pf_run) ( services_discovery_t *);
132 };
133
134 struct playlist_preparse_t
135 {
136     VLC_COMMON_MEMBERS
137     vlc_mutex_t     lock;
138     int             i_waiting;
139     input_item_t  **pp_waiting;
140 };
141
142
143 /**
144  * Structure containing information about the playlist
145  */
146 struct playlist_t
147 {
148     VLC_COMMON_MEMBERS
149 /**
150    \name playlist_t
151    These members are uniq to playlist_t
152 */
153 /*@{*/
154     int                   i_index;  /**< current index into the playlist */
155     int                   i_enabled; /**< How many items are enabled ? */
156
157     int                   i_size;   /**< total size of the list */
158     playlist_item_t **    pp_items; /**< array of pointers to the
159                                      * playlist items */
160     int                   i_all_size; /**< size of list of items and nodes */
161     playlist_item_t **    pp_all_items; /**< array of pointers to the
162                                          * playlist items and nodes */
163
164     int                   i_views; /**< Number of views */
165     playlist_view_t **    pp_views; /**< array of pointers to the
166                                      * playlist views */
167
168     input_thread_t *      p_input;  /**< the input thread ascosiated
169                                      * with the current item */
170
171     mtime_t               request_date; /**< Used for profiling */
172
173     int                   i_last_id; /**< Last id to an item */
174     int                   i_sort; /**< Last sorting applied to the playlist */
175     int                   i_order; /**< Last ordering applied to the playlist */
176
177     playlist_item_t *    p_general; /**< Keep a pointer on the "general"
178                                         category */
179
180     services_discovery_t **pp_sds;
181     int                   i_sds;
182
183     vlc_bool_t          b_go_next; /*< Go further than the parent node ? */
184
185     struct {
186         /* Current status */
187         playlist_status_t   i_status;  /**< Current status of playlist */
188
189         /* R/O fields, don't touch if you aren't the playlist thread */
190         /* Use a request */
191         playlist_item_t *   p_item; /**< Currently playing/active item */
192         playlist_item_t *   p_node;   /**< Current node to play from */
193         int                 i_view;    /**< Current view */
194     } status;
195
196     struct {
197         /* Request */
198         /* Playlist thread uses this info to calculate the next position */
199         int                 i_view;   /**< requested view id */
200         playlist_item_t *   p_node;   /**< requested node to play from */
201         playlist_item_t *   p_item;   /**< requested item to play in the node */
202
203         int                 i_skip;   /**< Number of items to skip */
204         int                 i_goto;   /**< Direct index to go to (non-view)*/
205
206         vlc_bool_t          b_request; /**< Set to true by the requester
207                                             The playlist sets it back to false
208                                             when processing the request */
209         vlc_mutex_t         lock;      /**< Lock to protect request */
210     } request;
211
212     playlist_preparse_t     *p_preparse;
213
214     vlc_mutex_t gc_lock;         /**< Lock to protect the garbage collection */
215
216     // The following members are about user interaction
217     // The playlist manages the user interaction to avoid creating another
218     // thread
219     interaction_t *p_interaction;
220
221     /*@}*/
222 };
223
224 /* Helper to add an item */
225 struct playlist_add_t
226 {
227     int i_node;
228     int i_item;
229     int i_view;
230     int i_position;
231 };
232
233 #define SORT_ID 0
234 #define SORT_TITLE 1
235 #define SORT_TITLE_NODES_FIRST 2
236 #define SORT_AUTHOR 3
237 #define SORT_GENRE 4
238 #define SORT_RANDOM 5
239 #define SORT_DURATION 6
240 #define SORT_TITLE_NUMERIC 7
241 #define SORT_ALBUM 8
242
243 #define ORDER_NORMAL 0
244 #define ORDER_REVERSE 1
245
246 /*****************************************************************************
247  * Prototypes
248  *****************************************************************************/
249
250 /* Creation/Deletion */
251 #define playlist_Create(a) __playlist_Create(VLC_OBJECT(a))
252 playlist_t * __playlist_Create   ( vlc_object_t * );
253 int            playlist_Destroy  ( playlist_t * );
254
255 /* Playlist control */
256 #define playlist_Play(p) playlist_LockControl(p,PLAYLIST_PLAY )
257 #define playlist_Pause(p) playlist_LockControl(p,PLAYLIST_PAUSE )
258 #define playlist_Stop(p) playlist_LockControl(p,PLAYLIST_STOP )
259 #define playlist_Next(p) playlist_LockControl(p,PLAYLIST_SKIP, 1)
260 #define playlist_Prev(p) playlist_LockControl(p,PLAYLIST_SKIP, -1)
261 #define playlist_Skip(p,i) playlist_LockControl(p,PLAYLIST_SKIP, i)
262 #define playlist_Goto(p,i) playlist_LockControl(p,PLAYLIST_GOTO, i)
263
264 VLC_EXPORT( int, playlist_Control, ( playlist_t *, int, ...  ) );
265 VLC_EXPORT( int, playlist_LockControl, ( playlist_t *, int, ...  ) );
266
267 VLC_EXPORT( int,  playlist_Clear, ( playlist_t * ) );
268 VLC_EXPORT( int,  playlist_LockClear, ( playlist_t * ) );
269
270 VLC_EXPORT( int, playlist_PreparseEnqueue, (playlist_t *, input_item_t *) );
271 VLC_EXPORT( int, playlist_PreparseEnqueueItem, (playlist_t *, playlist_item_t *) );
272
273 /* Services discovery */
274
275 VLC_EXPORT( int, playlist_ServicesDiscoveryAdd, (playlist_t *, const char *));
276 VLC_EXPORT( int, playlist_ServicesDiscoveryRemove, (playlist_t *, const char *));
277 VLC_EXPORT( int, playlist_AddSDModules, (playlist_t *, char *));
278 VLC_EXPORT( vlc_bool_t, playlist_IsServicesDiscoveryLoaded, ( playlist_t *,const char *));
279
280
281 /* Item management functions (act on items) */
282 #define playlist_AddItem(p,pi,i1,i2) playlist_ItemAdd(p,pi,i1,i2)
283 #define playlist_ItemNew( a , b, c ) __playlist_ItemNew(VLC_OBJECT(a) , b , c )
284 #define playlist_ItemCopy( a, b ) __playlist_ItemCopy(VLC_OBJECT(a), b )
285 VLC_EXPORT( playlist_item_t* , __playlist_ItemNew, ( vlc_object_t *,const char *,const char * ) );
286 VLC_EXPORT( playlist_item_t* , __playlist_ItemCopy, ( vlc_object_t *,playlist_item_t* ) );
287 VLC_EXPORT( playlist_item_t* , playlist_ItemNewWithType, ( vlc_object_t *,const char *,const char *, int ) );
288 VLC_EXPORT( int, playlist_ItemDelete, ( playlist_item_t * ) );
289 VLC_EXPORT( int, playlist_ItemAddParent, ( playlist_item_t *, int,playlist_item_t *) );
290 VLC_EXPORT( int, playlist_CopyParents, ( playlist_item_t *,playlist_item_t *) );
291 /* Item informations accessors */
292 VLC_EXPORT( int, playlist_ItemSetName, (playlist_item_t *,  char * ) );
293 VLC_EXPORT( int, playlist_ItemSetDuration, (playlist_item_t *, mtime_t ) );
294
295
296 /* View management functions */
297 VLC_EXPORT( int, playlist_ViewInsert, (playlist_t *, int, char * ) );
298 VLC_EXPORT( int, playlist_ViewDelete, (playlist_t *,playlist_view_t* ) );
299 VLC_EXPORT( playlist_view_t *, playlist_ViewFind, (playlist_t *, int ) );
300 VLC_EXPORT( int, playlist_ViewUpdate, (playlist_t *, int ) );
301 VLC_EXPORT( int, playlist_ViewDump, (playlist_t *, playlist_view_t * ) );
302 VLC_EXPORT( int, playlist_ViewEmpty, (playlist_t *, int, vlc_bool_t ) );
303
304 /* Node management */
305 VLC_EXPORT( playlist_item_t *, playlist_NodeCreate, ( playlist_t *,int,char *, playlist_item_t * p_parent ) );
306 VLC_EXPORT( int, playlist_NodeAppend, (playlist_t *,int,playlist_item_t*,playlist_item_t *) );
307 VLC_EXPORT( int, playlist_NodeInsert, (playlist_t *,int,playlist_item_t*,playlist_item_t *, int) );
308 VLC_EXPORT( int, playlist_NodeRemoveItem, (playlist_t *,playlist_item_t*,playlist_item_t *) );
309 VLC_EXPORT( int, playlist_NodeRemoveParent, (playlist_t *,playlist_item_t*,playlist_item_t *) );
310 VLC_EXPORT( int, playlist_NodeChildrenCount, (playlist_t *,playlist_item_t* ) );
311 VLC_EXPORT( playlist_item_t *, playlist_ChildSearchName, (playlist_item_t*, const char* ) );
312 VLC_EXPORT( int, playlist_NodeDelete, ( playlist_t *, playlist_item_t *, vlc_bool_t , vlc_bool_t ) );
313 VLC_EXPORT( int, playlist_NodeEmpty, ( playlist_t *, playlist_item_t *, vlc_bool_t ) );
314
315 /* Tree walking */
316 playlist_item_t *playlist_FindNextFromParent( playlist_t *p_playlist,
317                 int i_view,
318                 playlist_item_t *p_root,
319                 playlist_item_t *p_node,
320                 playlist_item_t *p_item );
321 playlist_item_t *playlist_FindPrevFromParent( playlist_t *p_playlist,
322                 int i_view,
323                 playlist_item_t *p_root,
324                 playlist_item_t *p_node,
325                 playlist_item_t *p_item );
326
327
328 /* Simple add/remove functions */
329 /* These functions add the item to the "simple" view (+all & category )*/
330 VLC_EXPORT( int,  playlist_Add,    ( playlist_t *, const char *, const char *, int, int ) );
331 VLC_EXPORT( int,  playlist_AddExt, ( playlist_t *, const char *, const char *, int, int, mtime_t, const char **,int ) );
332 VLC_EXPORT( int,  playlist_ItemAdd, ( playlist_t *, playlist_item_t *, int, int ) );
333 VLC_EXPORT(int, playlist_NodeAddItem, ( playlist_t *, playlist_item_t *,int,playlist_item_t *,int , int ) );
334
335 /* Misc item operations (act on item+playlist) */
336 VLC_EXPORT( int,  playlist_Delete, ( playlist_t *, int ) );
337 VLC_EXPORT( int,  playlist_LockDelete, ( playlist_t *, int ) );
338 VLC_EXPORT( int,  playlist_Disable, ( playlist_t *, playlist_item_t * ) );
339 VLC_EXPORT( int,  playlist_Enable, ( playlist_t *, playlist_item_t * ) );
340 VLC_EXPORT( int, playlist_ItemToNode, (playlist_t *,playlist_item_t *) );
341 VLC_EXPORT( int, playlist_LockItemToNode, (playlist_t *,playlist_item_t *) );
342 VLC_EXPORT( int, playlist_Replace, (playlist_t *,playlist_item_t *, input_item_t*) );
343 VLC_EXPORT( int, playlist_LockReplace, (playlist_t *,playlist_item_t *, input_item_t*) );
344
345
346 /* Item search functions */
347 VLC_EXPORT( playlist_item_t *, playlist_ItemGetById, (playlist_t *, int) );
348 VLC_EXPORT( playlist_item_t *, playlist_LockItemGetById, (playlist_t *, int) );
349 VLC_EXPORT( playlist_item_t *, playlist_ItemGetByPos, (playlist_t *, int) );
350 VLC_EXPORT( playlist_item_t *, playlist_LockItemGetByPos, (playlist_t *, int) );
351 VLC_EXPORT( playlist_item_t *, playlist_ItemGetByInput, (playlist_t *,input_item_t * ) );
352 VLC_EXPORT( playlist_item_t *, playlist_LockItemGetByInput, (playlist_t *,input_item_t * ) );
353 VLC_EXPORT( int, playlist_GetPositionById, (playlist_t *,int ) );
354
355 VLC_EXPORT( int, playlist_ItemAddOption, (playlist_item_t *, const char *) );
356
357 /* Playlist sorting */
358 #define playlist_SortID(p, i) playlist_Sort( p, SORT_ID, i)
359 #define playlist_SortTitle(p, i) playlist_Sort( p, SORT_TITLE, i)
360 #define playlist_SortAuthor(p, i) playlist_Sort( p, SORT_AUTHOR, i)
361 #define playlist_SortAlbum(p, i) playlist_Sort( p, SORT_ALBUM, i)
362 #define playlist_SortGroup(p, i) playlist_Sort( p, SORT_GROUP, i)
363 VLC_EXPORT( int,  playlist_Sort, ( playlist_t *, int, int) );
364 VLC_EXPORT( int,  playlist_Move, ( playlist_t *, int, int ) );
365 VLC_EXPORT( int,  playlist_NodeGroup, ( playlist_t *, int,playlist_item_t *,playlist_item_t **,int, int, int ) );
366 VLC_EXPORT( int,  playlist_NodeSort, ( playlist_t *, playlist_item_t *,int, int ) );
367 VLC_EXPORT( int,  playlist_RecursiveNodeSort, ( playlist_t *, playlist_item_t *,int, int ) );
368
369 /* Load/Save */
370 VLC_EXPORT( int,  playlist_Import, ( playlist_t *, const char * ) );
371 VLC_EXPORT( int,  playlist_Export, ( playlist_t *, const char *, const char * ) );
372
373 /***********************************************************************
374  * Inline functions
375  ***********************************************************************/
376
377
378 /**
379  *  tell if a playlist is currently playing.
380  *  \param p_playlist the playlist to check
381  *  \return true if playlist is playing, false otherwise
382  */
383 static inline vlc_bool_t playlist_IsPlaying( playlist_t * p_playlist )
384 {
385     vlc_bool_t b_playing;
386
387     vlc_mutex_lock( &p_playlist->object_lock );
388     b_playing = p_playlist->status.i_status == PLAYLIST_RUNNING;
389     vlc_mutex_unlock( &p_playlist->object_lock );
390
391     return( b_playing );
392 }
393
394 /**
395  *  tell if a playlist is currently empty
396  *  \param p_playlist the playlist to check
397  *  \return true if the playlist is empty, false otherwise
398  */
399 static inline vlc_bool_t playlist_IsEmpty( playlist_t * p_playlist )
400 {
401     vlc_bool_t b_empty;
402
403     vlc_mutex_lock( &p_playlist->object_lock );
404     b_empty = p_playlist->i_size == 0;
405     vlc_mutex_unlock( &p_playlist->object_lock );
406
407     return( b_empty );
408 }
409
410
411
412 /**
413  * @}
414  */