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Use item-append when an item is appended to a node -> don't rebuild the whole tree
[vlc] / include / vlc_playlist.h
1 /*****************************************************************************
2  * vlc_playlist.h : Playlist functions
3  *****************************************************************************
4  * Copyright (C) 1999-2004 VideoLAN
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      0x1     /**< Must it be saved */
83 #define PLAYLIST_SKIP_FLAG      0x2     /**< Must playlist skip after it ? */
84 #define PLAYLIST_ENA_FLAG       0x4     /**< Is it enabled ? */
85 #define PLAYLIST_DEL_FLAG       0x8     /**< Autodelete ? */
86
87 /**
88  * playlist view
89  * \see playlist_t
90 */
91 struct playlist_view_t
92 {
93     char            *   psz_name;        /**< View name */
94     int                 i_id;            /**< Identifier for the view */
95     playlist_item_t *   p_root;          /**< Root node */
96 };
97
98
99 /**
100  * predefined views
101  *
102  */
103 #define VIEW_CATEGORY 1
104 #define VIEW_SIMPLE   2
105 #define VIEW_ALL      3
106 #define VIEW_FIRST_SORTED  4
107 #define VIEW_S_AUTHOR 4
108
109 #define VIEW_LAST_SORTED  4
110
111 #define VIEW_FIRST_CUSTOM 100
112
113 /**
114  * Playlist status
115  */
116 typedef enum { PLAYLIST_STOPPED,PLAYLIST_RUNNING,PLAYLIST_PAUSED } playlist_status_t;
117
118
119 struct services_discovery_t
120 {
121     VLC_COMMON_MEMBERS
122     const char *psz_module;
123
124     module_t *p_module;
125
126     services_discovery_sys_t *p_sys;
127     void (*pf_run) ( services_discovery_t *);
128 };
129
130
131 /**
132  * Structure containing information about the playlist
133  */
134 struct playlist_t
135 {
136     VLC_COMMON_MEMBERS
137 /**
138    \name playlist_t
139    These members are uniq to playlist_t
140 */
141 /*@{*/
142     int                   i_index;  /**< current index into the playlist */
143     int                   i_enabled; /**< How many items are enabled ? */
144
145     int                   i_size;   /**< total size of the list */
146     playlist_item_t **    pp_items; /**< array of pointers to the
147                                      * playlist items */
148
149     int                   i_views; /**< Number of views */
150     playlist_view_t **    pp_views; /**< array of pointers to the
151                                      * playlist views */
152
153     input_thread_t *      p_input;  /**< the input thread ascosiated
154                                      * with the current item */
155
156     mtime_t               request_date; /**< Used for profiling */
157
158     int                   i_last_id; /**< Last id to an item */
159     int                   i_sort; /**< Last sorting applied to the playlist */
160     int                   i_order; /**< Last ordering applied to the playlist */
161
162     playlist_item_t *    p_general; /**< Keep a pointer on the "general"
163                                         category */
164
165     services_discovery_t **pp_sds;
166     int                   i_sds;
167
168     vlc_bool_t          b_go_next; /*< Go further than the parent node ? */
169
170     struct {
171         /* Current status */
172         playlist_status_t   i_status;  /**< Current status of playlist */
173
174         /* R/O fields, don't touch if you aren't the playlist thread */
175         /* Use a request */
176         playlist_item_t *   p_item; /**< Currently playing/active item */
177         playlist_item_t *   p_node;   /**< Current node to play from */
178         int                 i_view;    /**< Current view */
179     } status;
180
181     struct {
182         /* Request */
183         /* Playlist thread uses this info to calculate the next position */
184         int                 i_view;   /**< requested view id */
185         playlist_item_t *   p_node;   /**< requested node to play from */
186         playlist_item_t *   p_item;   /**< requested item to play in the node */
187
188         int                 i_skip;   /**< Number of items to skip */
189         int                 i_goto;   /**< Direct index to go to (non-view)*/
190
191         vlc_bool_t          b_request; /**< Set to true by the requester
192                                             The playlist sets it back to false
193                                             when processing the request */
194         vlc_mutex_t        lock;      /**< Lock to protect request */
195     } request;
196
197     /*@}*/
198 };
199
200 /* Helper to add an item */
201 struct playlist_add_t
202 {
203     playlist_item_t *p_node;
204     playlist_item_t *p_item;
205     int i_view;
206     int i_position;
207 };
208
209 #define SORT_ID 0
210 #define SORT_TITLE 1
211 #define SORT_TITLE_NODES_FIRST 2
212 #define SORT_AUTHOR 3
213 #define SORT_RANDOM 4
214 #define SORT_DURATION 5
215
216 #define ORDER_NORMAL 0
217 #define ORDER_REVERSE 1
218
219 /*****************************************************************************
220  * Prototypes
221  *****************************************************************************/
222
223 /* Creation/Deletion */
224 #define playlist_Create(a) __playlist_Create(VLC_OBJECT(a))
225 playlist_t * __playlist_Create   ( vlc_object_t * );
226 int            playlist_Destroy  ( playlist_t * );
227
228 /* Playlist control */
229 #define playlist_Play(p) playlist_Control(p,PLAYLIST_PLAY )
230 #define playlist_Pause(p) playlist_Control(p,PLAYLIST_PAUSE )
231 #define playlist_Stop(p) playlist_Control(p,PLAYLIST_STOP )
232 #define playlist_Next(p) playlist_Control(p,PLAYLIST_SKIP , 1)
233 #define playlist_Prev(p) playlist_Control(p,PLAYLIST_SKIP , -1)
234 #define playlist_Skip(p,i) playlist_Control(p,PLAYLIST_SKIP,i)
235 #define playlist_Goto(p,i) playlist_Control(p,PLAYLIST_GOTO,i)
236
237 VLC_EXPORT( int, playlist_Control, ( playlist_t *, int, ...  ) );
238
239 VLC_EXPORT( int,  playlist_Clear, ( playlist_t * ) );
240
241
242 /* Services discovery */
243
244 VLC_EXPORT( int, playlist_ServicesDiscoveryAdd, (playlist_t *, const char *));
245 VLC_EXPORT( int, playlist_ServicesDiscoveryRemove, (playlist_t *, const char *));
246 VLC_EXPORT( int, playlist_AddSDModules, (playlist_t *, char *));
247 VLC_EXPORT( vlc_bool_t, playlist_IsServicesDiscoveryLoaded, ( playlist_t *,const char *));
248
249
250 /* Item management functions (act on items) */
251 #define playlist_AddItem(p,pi,i1,i2) playlist_ItemAdd(p,pi,i1,i2)
252 #define playlist_ItemNew( a , b, c ) __playlist_ItemNew(VLC_OBJECT(a) , b , c )
253 VLC_EXPORT( playlist_item_t* , __playlist_ItemNew, ( vlc_object_t *,const char *,const char * ) );
254 VLC_EXPORT( int, playlist_ItemDelete, ( playlist_item_t * ) );
255 VLC_EXPORT( int, playlist_ItemAddParent, ( playlist_item_t *, int,playlist_item_t *) );
256 VLC_EXPORT( int, playlist_CopyParents, ( playlist_item_t *,playlist_item_t *) );
257 /* Item informations accessors */
258 VLC_EXPORT( int, playlist_ItemSetName, (playlist_item_t *,  char * ) );
259 VLC_EXPORT( int, playlist_ItemSetDuration, (playlist_item_t *, mtime_t ) );
260
261
262 /* View management functions */
263 VLC_EXPORT( int, playlist_ViewInsert, (playlist_t *, int, char * ) );
264 VLC_EXPORT( int, playlist_ViewDelete, (playlist_t *,playlist_view_t* ) );
265 VLC_EXPORT( playlist_view_t *, playlist_ViewFind, (playlist_t *, int ) );
266 VLC_EXPORT( int, playlist_ViewUpdate, (playlist_t *, int ) );
267 VLC_EXPORT( int, playlist_ViewDump, (playlist_t *, playlist_view_t * ) );
268 VLC_EXPORT( int, playlist_ViewEmpty, (playlist_t *, int, vlc_bool_t ) );
269
270 /* Node management */
271 VLC_EXPORT( playlist_item_t *, playlist_NodeCreate, ( playlist_t *,int,char *, playlist_item_t * p_parent ) );
272 VLC_EXPORT( int, playlist_NodeAppend, (playlist_t *,int,playlist_item_t*,playlist_item_t *) );
273 VLC_EXPORT( int, playlist_NodeInsert, (playlist_t *,int,playlist_item_t*,playlist_item_t *, int) );
274 VLC_EXPORT( int, playlist_NodeRemoveItem, (playlist_t *,playlist_item_t*,playlist_item_t *) );
275 VLC_EXPORT( int, playlist_NodeChildrenCount, (playlist_t *,playlist_item_t* ) );
276 VLC_EXPORT( playlist_item_t *, playlist_ChildSearchName, (playlist_item_t*, const char* ) );
277 VLC_EXPORT( int, playlist_NodeDelete, ( playlist_t *, playlist_item_t *, vlc_bool_t ) );
278 VLC_EXPORT( int, playlist_NodeEmpty, ( playlist_t *, playlist_item_t *, vlc_bool_t ) );
279
280
281 /* Tree walking */
282 playlist_item_t *playlist_FindNextFromParent( playlist_t *p_playlist,
283                 int i_view,
284                 playlist_item_t *p_root,
285                 playlist_item_t *p_node,
286                 playlist_item_t *p_item );
287 playlist_item_t *playlist_FindPrevFromParent( playlist_t *p_playlist,
288                 int i_view,
289                 playlist_item_t *p_root,
290                 playlist_item_t *p_node,
291                 playlist_item_t *p_item );
292
293
294 /* Simple add/remove functions */
295 /* These functions add the item to the "simple" view (+all & category )*/
296 VLC_EXPORT( int,  playlist_Add,    ( playlist_t *, const char *, const char *, int, int ) );
297 VLC_EXPORT( int,  playlist_AddExt, ( playlist_t *, const char *, const char *, int, int, mtime_t, const char **,int ) );
298 VLC_EXPORT( int,  playlist_ItemAdd, ( playlist_t *, playlist_item_t *, int, int ) );
299 VLC_EXPORT(int, playlist_NodeAddItem, ( playlist_t *, playlist_item_t *,int,playlist_item_t *,int , int ) );
300
301 /* Misc item operations (act on item+playlist) */
302 VLC_EXPORT( int,  playlist_Delete, ( playlist_t *, int ) );
303 VLC_EXPORT( int,  playlist_Disable, ( playlist_t *, playlist_item_t * ) );
304 VLC_EXPORT( int,  playlist_Enable, ( playlist_t *, playlist_item_t * ) );
305 VLC_EXPORT( int, playlist_ItemToNode, (playlist_t *,playlist_item_t *) );
306 VLC_EXPORT( int, playlist_Replace, (playlist_t *,playlist_item_t *, input_item_t*) );
307
308
309 /* Item search functions */
310 VLC_EXPORT( playlist_item_t *, playlist_ItemGetById, (playlist_t *, int) );
311 VLC_EXPORT( playlist_item_t *, playlist_ItemGetByPos, (playlist_t *, int) );
312 VLC_EXPORT( int, playlist_GetPositionById, (playlist_t *,int ) );
313 VLC_EXPORT( playlist_item_t *, playlist_ItemGetByInput, (playlist_t *,input_item_t * ) );
314
315 /* Info functions */
316 VLC_EXPORT( char * , playlist_GetInfo, ( playlist_t * , int, const char *, const char *) );
317 VLC_EXPORT( char * , playlist_ItemGetInfo, ( playlist_item_t * , const char *, const char *) );
318
319 VLC_EXPORT( info_category_t*, playlist_ItemGetCategory, ( playlist_item_t *, const char *) );
320
321 VLC_EXPORT( info_category_t*, playlist_ItemCreateCategory, ( playlist_item_t *, const char *) );
322
323 VLC_EXPORT( int, playlist_AddInfo, (playlist_t *, int, const char * , const char *, const char *, ...) );
324 VLC_EXPORT( int, playlist_ItemAddInfo, (playlist_item_t *, const char * , const char *, const char *, ...) );
325 VLC_EXPORT( int, playlist_ItemAddOption, (playlist_item_t *, const char *) );
326
327 /* Playlist sorting */
328 #define playlist_SortID(p, i) playlist_Sort( p, SORT_ID, i)
329 #define playlist_SortTitle(p, i) playlist_Sort( p, SORT_TITLE, i)
330 #define playlist_SortAuthor(p, i) playlist_Sort( p, SORT_AUTHOR, i)
331 #define playlist_SortGroup(p, i) playlist_Sort( p, SORT_GROUP, i)
332 VLC_EXPORT( int,  playlist_Sort, ( playlist_t *, int, int) );
333 VLC_EXPORT( int,  playlist_Move, ( playlist_t *, int, int ) );
334 VLC_EXPORT( int,  playlist_NodeGroup, ( playlist_t *, int,playlist_item_t *,playlist_item_t **,int, int, int ) );
335 VLC_EXPORT( int,  playlist_NodeSort, ( playlist_t *, playlist_item_t *,int, int ) );
336
337 /* Load/Save */
338 VLC_EXPORT( int,  playlist_Import, ( playlist_t *, const char * ) );
339 VLC_EXPORT( int,  playlist_Export, ( playlist_t *, const char *, const char * ) );
340
341 /***********************************************************************
342  * Inline functions
343  ***********************************************************************/
344
345
346 /**
347  *  tell if a playlist is currently playing.
348  *  \param p_playlist the playlist to check
349  *  \return true if playlist is playing, false otherwise
350  */
351 static inline vlc_bool_t playlist_IsPlaying( playlist_t * p_playlist )
352 {
353     vlc_bool_t b_playing;
354
355     vlc_mutex_lock( &p_playlist->object_lock );
356     b_playing = p_playlist->status.i_status == PLAYLIST_RUNNING;
357     vlc_mutex_unlock( &p_playlist->object_lock );
358
359     return( b_playing );
360 }
361
362 /**
363  *  tell if a playlist is currently empty
364  *  \param p_playlist the playlist to check
365  *  \return true if the playlist is empty, false otherwise
366  */
367 static inline vlc_bool_t playlist_IsEmpty( playlist_t * p_playlist )
368 {
369     vlc_bool_t b_empty;
370
371     vlc_mutex_lock( &p_playlist->object_lock );
372     b_empty = p_playlist->i_size == 0;
373     vlc_mutex_unlock( &p_playlist->object_lock );
374
375     return( b_empty );
376 }
377
378 /**
379  * @}
380  */