git.sesse.net Git - vlc/blob - 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
 112 #define VIEW_LAST_SORTED  10
 113
 114 #define VIEW_FIRST_CUSTOM 100
 115
 116 /**
 117  * Playlist status
 118  */
 119 typedef enum { PLAYLIST_STOPPED,PLAYLIST_RUNNING,PLAYLIST_PAUSED } playlist_status_t;
 120
 121
 122 struct services_discovery_t
 123 {
 124     VLC_COMMON_MEMBERS
 125     const char *psz_module;
 126
 127     module_t *p_module;
 128
 129     services_discovery_sys_t *p_sys;
 130     void (*pf_run) ( services_discovery_t *);
 131 };
 132
 133 struct playlist_preparse_t
 134 {
 135     VLC_COMMON_MEMBERS
 136     vlc_mutex_t     lock;
 137     int             i_waiting;
 138     input_item_t  **pp_waiting;
 139 };
 140
 141
 142 /**
 143  * Structure containing information about the playlist
 144  */
 145 struct playlist_t
 146 {
 147     VLC_COMMON_MEMBERS
 148 /**
 149    \name playlist_t
 150    These members are uniq to playlist_t
 151 */
 152 /*@{*/
 153     int                   i_index;  /**< current index into the playlist */
 154     int                   i_enabled; /**< How many items are enabled ? */
 155
 156     int                   i_size;   /**< total size of the list */
 157     playlist_item_t **    pp_items; /**< array of pointers to the
 158                                      * playlist items */
 159     int                   i_all_size; /**< size of list of items and nodes */
 160     playlist_item_t **    pp_all_items; /**< array of pointers to the
 161                                          * playlist items and nodes */
 162
 163     int                   i_views; /**< Number of views */
 164     playlist_view_t **    pp_views; /**< array of pointers to the
 165                                      * playlist views */
 166
 167     input_thread_t *      p_input;  /**< the input thread ascosiated
 168                                      * with the current item */
 169
 170     mtime_t               request_date; /**< Used for profiling */
 171
 172     int                   i_last_id; /**< Last id to an item */
 173     int                   i_sort; /**< Last sorting applied to the playlist */
 174     int                   i_order; /**< Last ordering applied to the playlist */
 175
 176     playlist_item_t *    p_general; /**< Keep a pointer on the "general"
 177                                         category */
 178
 179     services_discovery_t **pp_sds;
 180     int                   i_sds;
 181
 182     vlc_bool_t          b_go_next; /*< Go further than the parent node ? */
 183
 184     struct {
 185         /* Current status */
 186         playlist_status_t   i_status;  /**< Current status of playlist */
 187
 188         /* R/O fields, don't touch if you aren't the playlist thread */
 189         /* Use a request */
 190         playlist_item_t *   p_item; /**< Currently playing/active item */
 191         playlist_item_t *   p_node;   /**< Current node to play from */
 192         int                 i_view;    /**< Current view */
 193     } status;
 194
 195     struct {
 196         /* Request */
 197         /* Playlist thread uses this info to calculate the next position */
 198         int                 i_view;   /**< requested view id */
 199         playlist_item_t *   p_node;   /**< requested node to play from */
 200         playlist_item_t *   p_item;   /**< requested item to play in the node */
 201
 202         int                 i_skip;   /**< Number of items to skip */
 203         int                 i_goto;   /**< Direct index to go to (non-view)*/
 204
 205         vlc_bool_t          b_request; /**< Set to true by the requester
 206                                             The playlist sets it back to false
 207                                             when processing the request */
 208         vlc_mutex_t         lock;      /**< Lock to protect request */
 209     } request;
 210
 211     playlist_preparse_t     *p_preparse;
 212
 213     vlc_mutex_t gc_lock;         /**< Lock to protect the garbage collection */
 214
 215     /*@}*/
 216 };
 217
 218 /* Helper to add an item */
 219 struct playlist_add_t
 220 {
 221     int i_node;
 222     int i_item;
 223     int i_view;
 224     int i_position;
 225 };
 226
 227 #define SORT_ID 0
 228 #define SORT_TITLE 1
 229 #define SORT_TITLE_NODES_FIRST 2
 230 #define SORT_AUTHOR 3
 231 #define SORT_GENRE 4
 232 #define SORT_RANDOM 5
 233 #define SORT_DURATION 6
 234 #define SORT_TITLE_NUMERIC 7
 235
 236 #define ORDER_NORMAL 0
 237 #define ORDER_REVERSE 1
 238
 239 /*****************************************************************************
 240  * Prototypes
 241  *****************************************************************************/
 242
 243 /* Creation/Deletion */
 244 #define playlist_Create(a) __playlist_Create(VLC_OBJECT(a))
 245 playlist_t * __playlist_Create   ( vlc_object_t * );
 246 int            playlist_Destroy  ( playlist_t * );
 247
 248 /* Playlist control */
 249 #define playlist_Play(p) playlist_LockControl(p,PLAYLIST_PLAY )
 250 #define playlist_Pause(p) playlist_LockControl(p,PLAYLIST_PAUSE )
 251 #define playlist_Stop(p) playlist_LockControl(p,PLAYLIST_STOP )
 252 #define playlist_Next(p) playlist_LockControl(p,PLAYLIST_SKIP, 1)
 253 #define playlist_Prev(p) playlist_LockControl(p,PLAYLIST_SKIP, -1)
 254 #define playlist_Skip(p,i) playlist_LockControl(p,PLAYLIST_SKIP, i)
 255 #define playlist_Goto(p,i) playlist_LockControl(p,PLAYLIST_GOTO, i)
 256
 257 VLC_EXPORT( int, playlist_Control, ( playlist_t *, int, ...  ) );
 258 VLC_EXPORT( int, playlist_LockControl, ( playlist_t *, int, ...  ) );
 259
 260 VLC_EXPORT( int,  playlist_Clear, ( playlist_t * ) );
 261 VLC_EXPORT( int,  playlist_LockClear, ( playlist_t * ) );
 262
 263 VLC_EXPORT( int, playlist_PreparseEnqueue, (playlist_t *, input_item_t *) );
 264
 265 /* Services discovery */
 266
 267 VLC_EXPORT( int, playlist_ServicesDiscoveryAdd, (playlist_t *, const char *));
 268 VLC_EXPORT( int, playlist_ServicesDiscoveryRemove, (playlist_t *, const char *));
 269 VLC_EXPORT( int, playlist_AddSDModules, (playlist_t *, char *));
 270 VLC_EXPORT( vlc_bool_t, playlist_IsServicesDiscoveryLoaded, ( playlist_t *,const char *));
 271
 272
 273 /* Item management functions (act on items) */
 274 #define playlist_AddItem(p,pi,i1,i2) playlist_ItemAdd(p,pi,i1,i2)
 275 #define playlist_ItemNew( a , b, c ) __playlist_ItemNew(VLC_OBJECT(a) , b , c )
 276 #define playlist_ItemCopy( a, b ) __playlist_ItemCopy(VLC_OBJECT(a), b )
 277 VLC_EXPORT( playlist_item_t* , __playlist_ItemNew, ( vlc_object_t *,const char *,const char * ) );
 278 VLC_EXPORT( playlist_item_t* , __playlist_ItemCopy, ( vlc_object_t *,playlist_item_t* ) );
 279 VLC_EXPORT( playlist_item_t* , playlist_ItemNewWithType, ( vlc_object_t *,const char *,const char *, int ) );
 280 VLC_EXPORT( int, playlist_ItemDelete, ( playlist_item_t * ) );
 281 VLC_EXPORT( int, playlist_ItemAddParent, ( playlist_item_t *, int,playlist_item_t *) );
 282 VLC_EXPORT( int, playlist_CopyParents, ( playlist_item_t *,playlist_item_t *) );
 283 /* Item informations accessors */
 284 VLC_EXPORT( int, playlist_ItemSetName, (playlist_item_t *,  char * ) );
 285 VLC_EXPORT( int, playlist_ItemSetDuration, (playlist_item_t *, mtime_t ) );
 286
 287
 288 /* View management functions */
 289 VLC_EXPORT( int, playlist_ViewInsert, (playlist_t *, int, char * ) );
 290 VLC_EXPORT( int, playlist_ViewDelete, (playlist_t *,playlist_view_t* ) );
 291 VLC_EXPORT( playlist_view_t *, playlist_ViewFind, (playlist_t *, int ) );
 292 VLC_EXPORT( int, playlist_ViewUpdate, (playlist_t *, int ) );
 293 VLC_EXPORT( int, playlist_ViewDump, (playlist_t *, playlist_view_t * ) );
 294 VLC_EXPORT( int, playlist_ViewEmpty, (playlist_t *, int, vlc_bool_t ) );
 295
 296 /* Node management */
 297 VLC_EXPORT( playlist_item_t *, playlist_NodeCreate, ( playlist_t *,int,char *, playlist_item_t * p_parent ) );
 298 VLC_EXPORT( int, playlist_NodeAppend, (playlist_t *,int,playlist_item_t*,playlist_item_t *) );
 299 VLC_EXPORT( int, playlist_NodeInsert, (playlist_t *,int,playlist_item_t*,playlist_item_t *, int) );
 300 VLC_EXPORT( int, playlist_NodeRemoveItem, (playlist_t *,playlist_item_t*,playlist_item_t *) );
 301 VLC_EXPORT( int, playlist_NodeRemoveParent, (playlist_t *,playlist_item_t*,playlist_item_t *) );
 302 VLC_EXPORT( int, playlist_NodeChildrenCount, (playlist_t *,playlist_item_t* ) );
 303 VLC_EXPORT( playlist_item_t *, playlist_ChildSearchName, (playlist_item_t*, const char* ) );
 304 VLC_EXPORT( int, playlist_NodeDelete, ( playlist_t *, playlist_item_t *, vlc_bool_t , vlc_bool_t ) );
 305 VLC_EXPORT( int, playlist_NodeEmpty, ( playlist_t *, playlist_item_t *, vlc_bool_t ) );
 306
 307 /* Tree walking */
 308 playlist_item_t *playlist_FindNextFromParent( playlist_t *p_playlist,
 309                 int i_view,
 310                 playlist_item_t *p_root,
 311                 playlist_item_t *p_node,
 312                 playlist_item_t *p_item );
 313 playlist_item_t *playlist_FindPrevFromParent( playlist_t *p_playlist,
 314                 int i_view,
 315                 playlist_item_t *p_root,
 316                 playlist_item_t *p_node,
 317                 playlist_item_t *p_item );
 318
 319
 320 /* Simple add/remove functions */
 321 /* These functions add the item to the "simple" view (+all & category )*/
 322 VLC_EXPORT( int,  playlist_Add,    ( playlist_t *, const char *, const char *, int, int ) );
 323 VLC_EXPORT( int,  playlist_AddExt, ( playlist_t *, const char *, const char *, int, int, mtime_t, const char **,int ) );
 324 VLC_EXPORT( int,  playlist_ItemAdd, ( playlist_t *, playlist_item_t *, int, int ) );
 325 VLC_EXPORT(int, playlist_NodeAddItem, ( playlist_t *, playlist_item_t *,int,playlist_item_t *,int , int ) );
 326
 327 /* Misc item operations (act on item+playlist) */
 328 VLC_EXPORT( int,  playlist_Delete, ( playlist_t *, int ) );
 329 VLC_EXPORT( int,  playlist_LockDelete, ( playlist_t *, int ) );
 330 VLC_EXPORT( int,  playlist_Disable, ( playlist_t *, playlist_item_t * ) );
 331 VLC_EXPORT( int,  playlist_Enable, ( playlist_t *, playlist_item_t * ) );
 332 VLC_EXPORT( int, playlist_ItemToNode, (playlist_t *,playlist_item_t *) );
 333 VLC_EXPORT( int, playlist_LockItemToNode, (playlist_t *,playlist_item_t *) );
 334 VLC_EXPORT( int, playlist_Replace, (playlist_t *,playlist_item_t *, input_item_t*) );
 335 VLC_EXPORT( int, playlist_LockReplace, (playlist_t *,playlist_item_t *, input_item_t*) );
 336
 337
 338 /* Item search functions */
 339 VLC_EXPORT( playlist_item_t *, playlist_ItemGetById, (playlist_t *, int) );
 340 VLC_EXPORT( playlist_item_t *, playlist_LockItemGetById, (playlist_t *, int) );
 341 VLC_EXPORT( playlist_item_t *, playlist_ItemGetByPos, (playlist_t *, int) );
 342 VLC_EXPORT( playlist_item_t *, playlist_LockItemGetByPos, (playlist_t *, int) );
 343 VLC_EXPORT( playlist_item_t *, playlist_ItemGetByInput, (playlist_t *,input_item_t * ) );
 344 VLC_EXPORT( playlist_item_t *, playlist_LockItemGetByInput, (playlist_t *,input_item_t * ) );
 345 VLC_EXPORT( int, playlist_GetPositionById, (playlist_t *,int ) );
 346
 347 VLC_EXPORT( int, playlist_ItemAddOption, (playlist_item_t *, const char *) );
 348
 349 /* Playlist sorting */
 350 #define playlist_SortID(p, i) playlist_Sort( p, SORT_ID, i)
 351 #define playlist_SortTitle(p, i) playlist_Sort( p, SORT_TITLE, i)
 352 #define playlist_SortAuthor(p, i) playlist_Sort( p, SORT_AUTHOR, i)
 353 #define playlist_SortGroup(p, i) playlist_Sort( p, SORT_GROUP, i)
 354 VLC_EXPORT( int,  playlist_Sort, ( playlist_t *, int, int) );
 355 VLC_EXPORT( int,  playlist_Move, ( playlist_t *, int, int ) );
 356 VLC_EXPORT( int,  playlist_NodeGroup, ( playlist_t *, int,playlist_item_t *,playlist_item_t **,int, int, int ) );
 357 VLC_EXPORT( int,  playlist_NodeSort, ( playlist_t *, playlist_item_t *,int, int ) );
 358 VLC_EXPORT( int,  playlist_RecursiveNodeSort, ( playlist_t *, playlist_item_t *,int, int ) );
 359
 360 /* Load/Save */
 361 VLC_EXPORT( int,  playlist_Import, ( playlist_t *, const char * ) );
 362 VLC_EXPORT( int,  playlist_Export, ( playlist_t *, const char *, const char * ) );
 363
 364 /***********************************************************************
 365  * Inline functions
 366  ***********************************************************************/
 367
 368
 369 /**
 370  *  tell if a playlist is currently playing.
 371  *  \param p_playlist the playlist to check
 372  *  \return true if playlist is playing, false otherwise
 373  */
 374 static inline vlc_bool_t playlist_IsPlaying( playlist_t * p_playlist )
 375 {
 376     vlc_bool_t b_playing;
 377
 378     vlc_mutex_lock( &p_playlist->object_lock );
 379     b_playing = p_playlist->status.i_status == PLAYLIST_RUNNING;
 380     vlc_mutex_unlock( &p_playlist->object_lock );
 381
 382     return( b_playing );
 383 }
 384
 385 /**
 386  *  tell if a playlist is currently empty
 387  *  \param p_playlist the playlist to check
 388  *  \return true if the playlist is empty, false otherwise
 389  */
 390 static inline vlc_bool_t playlist_IsEmpty( playlist_t * p_playlist )
 391 {
 392     vlc_bool_t b_empty;
 393
 394     vlc_mutex_lock( &p_playlist->object_lock );
 395     b_empty = p_playlist->i_size == 0;
 396     vlc_mutex_unlock( &p_playlist->object_lock );
 397
 398     return( b_empty );
 399 }
 400
 401
 402
 403 /**
 404  * @}
 405  */