git.sesse.net Git - vlc/blob - 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     vlc_bool_t b_autodeletion;    /**< Indicates whther this item is to
  72                                    * be deleted after playback. True mean
  73                                    * that this item is to be deleted
  74                                    * after playback, false otherwise */
  75     vlc_bool_t b_enabled;         /**< Indicates whether this item is to be
  76                                    * played or skipped */
  77 };
  78
  79 #define PLAYLIST_SAVE_FLAG      0x1     /**< Must it be saved */
  80 #define PLAYLIST_SKIP_FLAG      0x2     /**< Must playlist skip after it ? */
  81 #define PLAYLIST_ENA_FLAG       0x4     /**< Is it enabled ? */
  82 #define PLAYLIST_DEL_FLAG       0x8     /**< Autodelete ? */
  83
  84 /**
  85  * playlist view
  86  * \see playlist_t
  87 */
  88 struct playlist_view_t
  89 {
  90     char            *   psz_name;        /**< View name */
  91     int                 i_id;            /**< Identifier for the view */
  92     playlist_item_t *   p_root;          /**< Root node */
  93 };
  94
  95
  96 /**
  97  * predefined views
  98  *
  99  */
 100 #define VIEW_CATEGORY 1
 101 #define VIEW_SIMPLE   2
 102 #define VIEW_ALL      3
 103 #define VIEW_FIRST_SORTED  4
 104 #define VIEW_S_AUTHOR 4
 105
 106 #define VIEW_LAST_SORTED  4
 107
 108 #define VIEW_FIRST_CUSTOM 100
 109
 110 /**
 111  * Playlist status
 112  */
 113 typedef enum { PLAYLIST_STOPPED,PLAYLIST_RUNNING,PLAYLIST_PAUSED } playlist_status_t;
 114
 115
 116 struct services_discovery_t
 117 {
 118     VLC_COMMON_MEMBERS
 119     const char *psz_module;
 120
 121     module_t *p_module;
 122
 123     services_discovery_sys_t *p_sys;
 124     void (*pf_run) ( services_discovery_t *);
 125 };
 126
 127
 128 /**
 129  * Structure containing information about the playlist
 130  */
 131 struct playlist_t
 132 {
 133     VLC_COMMON_MEMBERS
 134 /**
 135    \name playlist_t
 136    These members are uniq to playlist_t
 137 */
 138 /*@{*/
 139     int                   i_index;  /**< current index into the playlist */
 140     int                   i_enabled; /**< How many items are enabled ? */
 141
 142     int                   i_size;   /**< total size of the list */
 143     playlist_item_t **    pp_items; /**< array of pointers to the
 144                                      * playlist items */
 145
 146     int                   i_views; /**< Number of views */
 147     playlist_view_t **    pp_views; /**< array of pointers to the
 148                                      * playlist views */
 149
 150     input_thread_t *      p_input;  /**< the input thread ascosiated
 151                                      * with the current item */
 152
 153     mtime_t               request_date; /**< Used for profiling */
 154
 155     int                   i_last_id; /**< Last id to an item */
 156     int                   i_sort; /**< Last sorting applied to the playlist */
 157     int                   i_order; /**< Last ordering applied to the playlist */
 158
 159     playlist_item_t *    p_general; /**< Keep a pointer on the "general"
 160                                         category */
 161
 162     services_discovery_t **pp_sds;
 163     int                   i_sds;
 164
 165     vlc_bool_t          b_go_next; /*< Go further than the parent node ? */
 166
 167     struct {
 168         /* Current status */
 169         playlist_status_t   i_status;  /**< Current status of playlist */
 170
 171         /* R/O fields, don't touch if you aren't the playlist thread */
 172         /* Use a request */
 173         playlist_item_t *   p_item; /**< Currently playing/active item */
 174         playlist_item_t *   p_node;   /**< Current node to play from */
 175         int                 i_view;    /**< Current view */
 176     } status;
 177
 178     struct {
 179         /* Request */
 180         /* Playlist thread uses this info to calculate the next position */
 181         int                 i_view;   /**< requested view id */
 182         playlist_item_t *   p_node;   /**< requested node to play from */
 183         playlist_item_t *   p_item;   /**< requested item to play in the node */
 184
 185         int                 i_skip;   /**< Number of items to skip */
 186         int                 i_goto;   /**< Direct index to go to (non-view)*/
 187
 188         vlc_bool_t          b_request; /**< Set to true by the requester
 189                                             The playlist sets it back to false
 190                                             when processing the request */
 191         vlc_mutex_t        lock;      /**< Lock to protect request */
 192     } request;
 193
 194     /*@}*/
 195 };
 196
 197 /* Helper to add an item */
 198 struct playlist_add_t
 199 {
 200     playlist_item_t *p_parent;
 201     playlist_item_t *p_item;
 202     int i_view;
 203     int i_position;
 204 };
 205
 206 #define SORT_ID 0
 207 #define SORT_TITLE 1
 208 #define SORT_AUTHOR 2
 209 #define SORT_RANDOM 4
 210 #define SORT_DURATION 5
 211
 212 #define ORDER_NORMAL 0
 213 #define ORDER_REVERSE 1
 214
 215 /*****************************************************************************
 216  * Prototypes
 217  *****************************************************************************/
 218
 219 /* Creation/Deletion */
 220 #define playlist_Create(a) __playlist_Create(VLC_OBJECT(a))
 221 playlist_t * __playlist_Create   ( vlc_object_t * );
 222 void           playlist_Destroy  ( playlist_t * );
 223
 224 /* Playlist control */
 225 #define playlist_Play(p) playlist_Control(p,PLAYLIST_PLAY )
 226 #define playlist_Pause(p) playlist_Control(p,PLAYLIST_PAUSE )
 227 #define playlist_Stop(p) playlist_Control(p,PLAYLIST_STOP )
 228 #define playlist_Next(p) playlist_Control(p,PLAYLIST_SKIP , 1)
 229 #define playlist_Prev(p) playlist_Control(p,PLAYLIST_SKIP , -1)
 230 #define playlist_Skip(p,i) playlist_Control(p,PLAYLIST_SKIP,i)
 231 #define playlist_Goto(p,i) playlist_Control(p,PLAYLIST_GOTO,i)
 232
 233 VLC_EXPORT( int, playlist_Control, ( playlist_t *, int, ...  ) );
 234
 235 VLC_EXPORT( int,  playlist_Clear, ( playlist_t * ) );
 236
 237
 238 /* Services discovery */
 239
 240 VLC_EXPORT( int, playlist_ServicesDiscoveryAdd, (playlist_t *, const char *));
 241 VLC_EXPORT( void, playlist_ServicesDiscoveryRemove, (playlist_t *, const char *));
 242 VLC_EXPORT( int, playlist_AddSDModules, (playlist_t *, char *));
 243 VLC_EXPORT( vlc_bool_t, playlist_IsServicesDiscoveryLoaded, ( playlist_t *,const char *));
 244
 245
 246 /* Item management functions (act on items) */
 247 #define playlist_AddItem(p,pi,i1,i2) playlist_ItemAdd(p,pi,i1,i2)
 248 #define playlist_ItemNew( a , b, c ) __playlist_ItemNew(VLC_OBJECT(a) , b , c )
 249 VLC_EXPORT( playlist_item_t* , __playlist_ItemNew, ( vlc_object_t *,const char *,const char * ) );
 250 VLC_EXPORT( void, playlist_ItemDelete, ( playlist_item_t * ) );
 251 VLC_EXPORT( void, playlist_ItemAddParent, ( playlist_item_t *, int,playlist_item_t *) );
 252 VLC_EXPORT( void, playlist_CopyParents, ( playlist_item_t *,playlist_item_t *) );
 253 /* Item informations accessors */
 254 VLC_EXPORT( int, playlist_ItemSetName, (playlist_item_t *,  char * ) );
 255 VLC_EXPORT( int, playlist_ItemSetDuration, (playlist_item_t *, mtime_t ) );
 256
 257
 258 /* View management functions */
 259 VLC_EXPORT( int, playlist_ViewInsert, (playlist_t *, int, char * ) );
 260 VLC_EXPORT( void, playlist_ViewDelete, (playlist_t *,playlist_view_t* ) );
 261 VLC_EXPORT( playlist_view_t *, playlist_ViewFind, (playlist_t *, int ) );
 262 VLC_EXPORT( int, playlist_ViewUpdate, (playlist_t *, int ) );
 263 VLC_EXPORT( void, playlist_ViewDump, (playlist_t *, playlist_view_t * ) );
 264 VLC_EXPORT( int, playlist_ViewEmpty, (playlist_t *, int, vlc_bool_t ) );
 265
 266 /* Node management */
 267 VLC_EXPORT( playlist_item_t *, playlist_NodeCreate, ( playlist_t *,int,char *, playlist_item_t * p_parent ) );
 268 VLC_EXPORT( int, playlist_NodeAppend, (playlist_t *,int,playlist_item_t*,playlist_item_t *) );
 269 VLC_EXPORT( int, playlist_NodeInsert, (playlist_t *,int,playlist_item_t*,playlist_item_t *, int) );
 270 VLC_EXPORT( int, playlist_NodeRemoveItem, (playlist_t *,playlist_item_t*,playlist_item_t *) );
 271 VLC_EXPORT( int, playlist_NodeChildrenCount, (playlist_t *,playlist_item_t* ) );
 272 VLC_EXPORT( playlist_item_t *, playlist_ChildSearchName, (playlist_item_t*, const char* ) );
 273 VLC_EXPORT( int, playlist_NodeDelete, ( playlist_t *, playlist_item_t *, vlc_bool_t ) );
 274 VLC_EXPORT( int, playlist_NodeEmpty, ( playlist_t *, playlist_item_t *, vlc_bool_t ) );
 275
 276
 277 /* Tree walking */
 278 playlist_item_t *playlist_FindNextFromParent( playlist_t *p_playlist,
 279                 int i_view,
 280                 playlist_item_t *p_root,
 281                 playlist_item_t *p_node,
 282                 playlist_item_t *p_item );
 283 playlist_item_t *playlist_FindPrevFromParent( playlist_t *p_playlist,
 284                 int i_view,
 285                 playlist_item_t *p_root,
 286                 playlist_item_t *p_node,
 287                 playlist_item_t *p_item );
 288
 289
 290 /* Simple add/remove functions */
 291 /* These functions add the item to the "simple" view (+all & category )*/
 292 VLC_EXPORT( int,  playlist_Add,    ( playlist_t *, const char *, const char *, int, int ) );
 293 VLC_EXPORT( int,  playlist_AddExt, ( playlist_t *, const char *, const char *, int, int, mtime_t, const char **,int ) );
 294 VLC_EXPORT( int,  playlist_ItemAdd, ( playlist_t *, playlist_item_t *, int, int ) );
 295 VLC_EXPORT(int, playlist_NodeAddItem, ( playlist_t *, playlist_item_t *,int,playlist_item_t *,int , int ) );
 296
 297 /* Misc item operations (act on item+playlist) */
 298 VLC_EXPORT( int,  playlist_Delete, ( playlist_t *, int ) );
 299 VLC_EXPORT( int,  playlist_Disable, ( playlist_t *, playlist_item_t * ) );
 300 VLC_EXPORT( int,  playlist_Enable, ( playlist_t *, playlist_item_t * ) );
 301 VLC_EXPORT( void, playlist_ItemToNode, (playlist_t *,playlist_item_t *) );
 302
 303
 304 /* Item search functions */
 305 VLC_EXPORT( playlist_item_t *, playlist_ItemGetById, (playlist_t *, int) );
 306 VLC_EXPORT( playlist_item_t *, playlist_ItemGetByPos, (playlist_t *, int) );
 307 VLC_EXPORT( int, playlist_GetPositionById, (playlist_t *,int ) );
 308 VLC_EXPORT( playlist_item_t *, playlist_ItemGetByInput, (playlist_t *,input_item_t * ) );
 309
 310 /* Info functions */
 311 VLC_EXPORT( char * , playlist_GetInfo, ( playlist_t * , int, const char *, const char *) );
 312 VLC_EXPORT( char * , playlist_ItemGetInfo, ( playlist_item_t * , const char *, const char *) );
 313
 314 VLC_EXPORT( info_category_t*, playlist_ItemGetCategory, ( playlist_item_t *, const char *) );
 315
 316 VLC_EXPORT( info_category_t*, playlist_ItemCreateCategory, ( playlist_item_t *, const char *) );
 317
 318 VLC_EXPORT( int, playlist_AddInfo, (playlist_t *, int, const char * , const char *, const char *, ...) );
 319 VLC_EXPORT( int, playlist_ItemAddInfo, (playlist_item_t *, const char * , const char *, const char *, ...) );
 320 VLC_EXPORT( int, playlist_ItemAddOption, (playlist_item_t *, const char *) );
 321
 322 /* Playlist sorting */
 323 #define playlist_SortID(p, i) playlist_Sort( p, SORT_ID, i)
 324 #define playlist_SortTitle(p, i) playlist_Sort( p, SORT_TITLE, i)
 325 #define playlist_SortAuthor(p, i) playlist_Sort( p, SORT_AUTHOR, i)
 326 #define playlist_SortGroup(p, i) playlist_Sort( p, SORT_GROUP, i)
 327 VLC_EXPORT( int,  playlist_Sort, ( playlist_t *, int, int) );
 328 VLC_EXPORT( int,  playlist_Move, ( playlist_t *, int, int ) );
 329 VLC_EXPORT( int,  playlist_NodeGroup, ( playlist_t *, int,playlist_item_t *,playlist_item_t **,int, int, int ) );
 330
 331 /* Load/Save */
 332 VLC_EXPORT( int,  playlist_Import, ( playlist_t *, const char * ) );
 333 VLC_EXPORT( int,  playlist_Export, ( playlist_t *, const char *, const char * ) );
 334
 335 /***********************************************************************
 336  * Inline functions
 337  ***********************************************************************/
 338
 339
 340 /**
 341  *  tell if a playlist is currently playing.
 342  *  \param p_playlist the playlist to check
 343  *  \return true if playlist is playing, false otherwise
 344  */
 345 static inline vlc_bool_t playlist_IsPlaying( playlist_t * p_playlist )
 346 {
 347     vlc_bool_t b_playing;
 348
 349     vlc_mutex_lock( &p_playlist->object_lock );
 350     b_playing = p_playlist->status.i_status == PLAYLIST_RUNNING;
 351     vlc_mutex_unlock( &p_playlist->object_lock );
 352
 353     return( b_playing );
 354 }
 355
 356 /**
 357  *  tell if a playlist is currently empty
 358  *  \param p_playlist the playlist to check
 359  *  \return true if the playlist is empty, false otherwise
 360  */
 361 static inline vlc_bool_t playlist_IsEmpty( playlist_t * p_playlist )
 362 {
 363     vlc_bool_t b_empty;
 364
 365     vlc_mutex_lock( &p_playlist->object_lock );
 366     b_empty = p_playlist->i_size == 0;
 367     vlc_mutex_unlock( &p_playlist->object_lock );
 368
 369     return( b_empty );
 370 }
 371
 372 /**
 373  * @}
 374  */