rhythmdb/rhythmdb.h

   1  /*
   2  *  arch-tag: Header for RhythmDB - Rhythmbox backend queryable database
   3  *
   4  *  Copyright (C) 2003,2004 Colin Walters <walters@rhythmbox.org>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA.
  19  *
  20  */
  21
  22 #ifndef RHYTHMDB_H
  23 #define RHYTHMDB_H
  24
  25 #include <glib.h>
  26 #include <glib-object.h>
  27 #include <stdarg.h>
  28 #include <libxml/tree.h>
  29
  30 #include "config.h"
  31 #include "rb-refstring.h"
  32 #include "rhythmdb-query-results.h"
  33
  34 G_BEGIN_DECLS
  35
  36 struct RhythmDB_;
  37 typedef struct RhythmDB_ RhythmDB;
  38
  39 #define RHYTHMDB_TYPE      (rhythmdb_get_type ())
  40 #define RHYTHMDB(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), RHYTHMDB_TYPE, RhythmDB))
  41 #define RHYTHMDB_CLASS(k)     (G_TYPE_CHECK_CLASS_CAST((k), RHYTHMDB_TYPE, RhythmDBClass))
  42 #define RHYTHMDB_IS(o)        (G_TYPE_CHECK_INSTANCE_TYPE ((o), RHYTHMDB_TYPE))
  43 #define RHYTHMDB_IS_CLASS(k)  (G_TYPE_CHECK_CLASS_TYPE ((k), RHYTHMDB_TYPE))
  44 #define RHYTHMDB_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), RHYTHMDB_TYPE, RhythmDBClass))
  45
  46 struct RhythmDBEntry_;
  47 typedef struct RhythmDBEntry_ RhythmDBEntry;
  48 GType rhythmdb_entry_get_type (void);
  49
  50 #define RHYTHMDB_TYPE_ENTRY      (rhythmdb_entry_get_type ())
  51 #define RHYTHMDB_ENTRY(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), RHYTHMDB_TYPE_ENTRY, RhythmDBEntry))
  52
  53 typedef void (*RhythmDBEntryActionFunc) (RhythmDBEntry *entry, gpointer data);
  54 typedef char* (*RhythmDBEntryStringFunc) (RhythmDBEntry *entry, gpointer data);
  55 typedef gboolean (*RhythmDBEntryCanSyncFunc) (RhythmDB *db, RhythmDBEntry *entry, gpointer data);
  56 typedef void (*RhythmDBEntrySyncFunc) (RhythmDB *db, RhythmDBEntry *entry, GError **error, gpointer data);
  57
  58 enum RhythmDBEntryCategory {
  59         RHYTHMDB_ENTRY_NORMAL,          /* anything that doesn't match the other categories */
  60         RHYTHMDB_ENTRY_STREAM,          /* endless streams (eg shoutcast, last.fm) */
  61         RHYTHMDB_ENTRY_CONTAINER,       /* things that point to other entries (eg podcast feeds) */
  62         RHYTHMDB_ENTRY_VIRTUAL          /* import errors, ignored files */
  63 };
  64
  65 typedef struct {
  66         char                            *name;
  67
  68         guint                           entry_type_data_size;
  69         gboolean                        save_to_disk;
  70         enum RhythmDBEntryCategory      category;
  71
  72         /* virtual functions here */
  73         RhythmDBEntryActionFunc         post_entry_create;
  74         gpointer                        post_entry_create_data;
  75         GDestroyNotify                  post_entry_create_destroy;
  76
  77         RhythmDBEntryActionFunc         pre_entry_destroy;
  78         gpointer                        pre_entry_destroy_data;
  79         GDestroyNotify                  pre_entry_destroy_destroy;
  80
  81         RhythmDBEntryStringFunc         get_playback_uri;
  82         gpointer                        get_playback_uri_data;
  83         GDestroyNotify                  get_playback_uri_destroy;
  84
  85         RhythmDBEntryCanSyncFunc        can_sync_metadata;
  86         gpointer                        can_sync_metadata_data;
  87         GDestroyNotify                  can_sync_metadata_destroy;
  88
  89         RhythmDBEntrySyncFunc           sync_metadata;
  90         gpointer                        sync_metadata_data;
  91         GDestroyNotify                  sync_metadata_destroy;
  92 } RhythmDBEntryType_;
  93 typedef RhythmDBEntryType_ *RhythmDBEntryType;
  94
  95 GType rhythmdb_entry_type_get_type (void);
  96 #define RHYTHMDB_TYPE_ENTRY_TYPE        (rhythmdb_entry_type_get_type ())
  97 #define RHYTHMDB_ENTRY_TYPE(o)          (G_TYPE_CHECK_INSTANCE_CAST ((o), RHYTHMDB_TYPE_ENTRY_TYPE, RhythmDBEntryType_))
  98 #define RHYTHMDB_IS_ENTRY_TYPE(o)       (G_TYPE_CHECK_INSTANCE_TYPE ((o), RHYTHMDB_TYPE_ENTRY_TYPE))
  99
 100 typedef GPtrArray RhythmDBQuery;
 101 GType rhythmdb_query_get_type (void);
 102 #define RHYTHMDB_TYPE_QUERY     (rhythmdb_query_get_type ())
 103 #define RHYTHMDB_QUERY(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), RHYTHMDB_TYPE_QUERY, RhythmDBQuery))
 104 #define RHYTHMDB_IS_QUERY(o)        (G_TYPE_CHECK_INSTANCE_TYPE ((o), RHYTHMDB_TYPE_QUERY))
 105
 106 #define RHYTHMDB_ENTRY_TYPE_SONG (rhythmdb_entry_song_get_type ())
 107 #define RHYTHMDB_ENTRY_TYPE_PODCAST_POST (rhythmdb_entry_podcast_post_get_type ())
 108 #define RHYTHMDB_ENTRY_TYPE_PODCAST_FEED (rhythmdb_entry_podcast_feed_get_type ())
 109 #define RHYTHMDB_ENTRY_TYPE_IMPORT_ERROR (rhythmdb_entry_import_error_get_type ())
 110 #define RHYTHMDB_ENTRY_TYPE_IGNORE (rhythmdb_entry_ignore_get_type ())
 111 #define RHYTHMDB_ENTRY_TYPE_INVALID (GINT_TO_POINTER (-1))
 112
 113 typedef enum
 114 {
 115         RHYTHMDB_QUERY_END,
 116         RHYTHMDB_QUERY_DISJUNCTION,
 117         RHYTHMDB_QUERY_SUBQUERY,
 118
 119         /* general */
 120         RHYTHMDB_QUERY_PROP_EQUALS,
 121
 122         /* string */
 123         RHYTHMDB_QUERY_PROP_LIKE,
 124         RHYTHMDB_QUERY_PROP_NOT_LIKE,
 125         RHYTHMDB_QUERY_PROP_PREFIX,
 126         RHYTHMDB_QUERY_PROP_SUFFIX,
 127
 128         /* numerical */
 129         RHYTHMDB_QUERY_PROP_GREATER,
 130         RHYTHMDB_QUERY_PROP_LESS,
 131
 132         /* synthetic query types, translated into non-synthetic ones internally */
 133         RHYTHMDB_QUERY_PROP_CURRENT_TIME_WITHIN,
 134         RHYTHMDB_QUERY_PROP_CURRENT_TIME_NOT_WITHIN,
 135         RHYTHMDB_QUERY_PROP_YEAR_EQUALS,
 136         RHYTHMDB_QUERY_PROP_YEAR_GREATER,
 137         RHYTHMDB_QUERY_PROP_YEAR_LESS,
 138 } RhythmDBQueryType;
 139
 140 /* If you modify this enum, don't forget to modify rhythmdb_prop_get_type */
 141 typedef enum
 142 {
 143         RHYTHMDB_PROP_TYPE = 0,
 144         RHYTHMDB_PROP_ENTRY_ID,
 145         RHYTHMDB_PROP_TITLE,
 146         RHYTHMDB_PROP_GENRE,
 147         RHYTHMDB_PROP_ARTIST,
 148         RHYTHMDB_PROP_ALBUM,
 149         RHYTHMDB_PROP_TRACK_NUMBER,
 150         RHYTHMDB_PROP_DISC_NUMBER,
 151         RHYTHMDB_PROP_DURATION,
 152         RHYTHMDB_PROP_FILE_SIZE,
 153         RHYTHMDB_PROP_LOCATION,
 154         RHYTHMDB_PROP_MOUNTPOINT,
 155         RHYTHMDB_PROP_MTIME,
 156         RHYTHMDB_PROP_FIRST_SEEN,
 157         RHYTHMDB_PROP_LAST_SEEN,
 158         RHYTHMDB_PROP_RATING,
 159         RHYTHMDB_PROP_PLAY_COUNT,
 160         RHYTHMDB_PROP_LAST_PLAYED,
 161         RHYTHMDB_PROP_BITRATE,
 162         RHYTHMDB_PROP_DATE,
 163         RHYTHMDB_PROP_TRACK_GAIN,
 164         RHYTHMDB_PROP_TRACK_PEAK,
 165         RHYTHMDB_PROP_ALBUM_GAIN,
 166         RHYTHMDB_PROP_ALBUM_PEAK,
 167         RHYTHMDB_PROP_MIMETYPE,
 168         RHYTHMDB_PROP_TITLE_SORT_KEY,
 169         RHYTHMDB_PROP_GENRE_SORT_KEY,
 170         RHYTHMDB_PROP_ARTIST_SORT_KEY,
 171         RHYTHMDB_PROP_ALBUM_SORT_KEY,
 172         RHYTHMDB_PROP_TITLE_FOLDED,
 173         RHYTHMDB_PROP_GENRE_FOLDED,
 174         RHYTHMDB_PROP_ARTIST_FOLDED,
 175         RHYTHMDB_PROP_ALBUM_FOLDED,
 176         RHYTHMDB_PROP_LAST_PLAYED_STR,
 177         RHYTHMDB_PROP_HIDDEN,
 178         RHYTHMDB_PROP_PLAYBACK_ERROR,
 179         RHYTHMDB_PROP_FIRST_SEEN_STR,
 180         RHYTHMDB_PROP_LAST_SEEN_STR,
 181
 182         /* synthetic properties */
 183         RHYTHMDB_PROP_SEARCH_MATCH,
 184         RHYTHMDB_PROP_YEAR,
 185
 186         /* Podcast properties */
 187         RHYTHMDB_PROP_STATUS,
 188         RHYTHMDB_PROP_DESCRIPTION,
 189         RHYTHMDB_PROP_SUBTITLE,
 190         RHYTHMDB_PROP_SUMMARY,
 191         RHYTHMDB_PROP_LANG,
 192         RHYTHMDB_PROP_COPYRIGHT,
 193         RHYTHMDB_PROP_IMAGE,
 194         RHYTHMDB_PROP_POST_TIME,
 195
 196         RHYTHMDB_PROP_MUSICBRAINZ_TRACKID,
 197
 198         RHYTHMDB_NUM_PROPERTIES
 199 } RhythmDBPropType;
 200
 201 enum {
 202         RHYTHMDB_PODCAST_STATUS_COMPLETE = 100,
 203         RHYTHMDB_PODCAST_STATUS_ERROR = 101,
 204         RHYTHMDB_PODCAST_STATUS_WAITING = 102,
 205         RHYTHMDB_PODCAST_STATUS_PAUSED = 103,
 206 };
 207
 208 /* commonly used extra entry metadata */
 209 #define RHYTHMDB_PROP_STREAM_SONG_TITLE         "rb:stream-song-title"
 210 #define RHYTHMDB_PROP_STREAM_SONG_ARTIST        "rb:stream-song-artist"
 211 #define RHYTHMDB_PROP_STREAM_SONG_ALBUM         "rb:stream-song-album"
 212
 213 GType rhythmdb_query_type_get_type (void);
 214 GType rhythmdb_prop_type_get_type (void);
 215
 216 #define RHYTHMDB_TYPE_QUERY_TYPE (rhythmdb_query_type_get_type ())
 217 #define RHYTHMDB_TYPE_PROP_TYPE (rhythmdb_prop_type_get_type ())
 218
 219 typedef struct {
 220         guint type;
 221         guint propid;
 222         GValue *val;
 223         GPtrArray *subquery;
 224 } RhythmDBQueryData;
 225
 226 typedef struct {
 227         RhythmDBPropType prop;
 228         GValue old;
 229         GValue new;
 230 } RhythmDBEntryChange;
 231
 232 const char *rhythmdb_entry_get_string   (RhythmDBEntry *entry, RhythmDBPropType propid);
 233 RBRefString *rhythmdb_entry_get_refstring (RhythmDBEntry *entry, RhythmDBPropType propid);
 234 char *rhythmdb_entry_dup_string (RhythmDBEntry *entry, RhythmDBPropType propid);
 235 gboolean rhythmdb_entry_get_boolean     (RhythmDBEntry *entry, RhythmDBPropType propid);
 236 guint64 rhythmdb_entry_get_uint64       (RhythmDBEntry *entry, RhythmDBPropType propid);
 237 gulong rhythmdb_entry_get_ulong         (RhythmDBEntry *entry, RhythmDBPropType propid);
 238 double rhythmdb_entry_get_double        (RhythmDBEntry *entry, RhythmDBPropType propid);
 239 gpointer rhythmdb_entry_get_pointer     (RhythmDBEntry *entry, RhythmDBPropType propid);
 240
 241 RhythmDBEntryType rhythmdb_entry_get_entry_type (RhythmDBEntry *entry);
 242
 243 typedef enum
 244 {
 245         RHYTHMDB_ERROR_ACCESS_FAILED,
 246 } RhythmDBError;
 247
 248 #define RHYTHMDB_ERROR (rhythmdb_error_quark ())
 249
 250 GQuark rhythmdb_error_quark (void);
 251
 252 typedef struct RhythmDBPrivate RhythmDBPrivate;
 253
 254 struct RhythmDB_
 255 {
 256         GObject parent;
 257
 258         RhythmDBPrivate *priv;
 259 };
 260
 261 typedef struct
 262 {
 263         GObjectClass parent;
 264
 265         /* signals */
 266         void    (*entry_added)          (RhythmDB *db, RhythmDBEntry *entry);
 267         void    (*entry_changed)        (RhythmDB *db, RhythmDBEntry *entry, GSList *changes); /* list of RhythmDBEntryChanges */
 268         void    (*entry_deleted)        (RhythmDB *db, RhythmDBEntry *entry);
 269         GValue *(*entry_extra_metadata_request) (RhythmDB *db, RhythmDBEntry *entry);
 270         void    (*entry_extra_metadata_gather) (RhythmDB *db, RhythmDBEntry *entry, GHashTable *data);
 271         void    (*entry_extra_metadata_notify) (RhythmDB *db, RhythmDBEntry *entry, const char *field, GValue *metadata);
 272         void    (*load_complete)        (RhythmDB *db);
 273         void    (*save_complete)        (RhythmDB *db);
 274         void    (*load_error)           (RhythmDB *db, const char *uri, const char *msg);
 275         void    (*save_error)           (RhythmDB *db, const char *uri, const GError *error);
 276         void    (*read_only)            (RhythmDB *db, gboolean readonly);
 277
 278         /* virtual methods */
 279
 280         gboolean        (*impl_load)            (RhythmDB *db, gboolean *dead, GError **error);
 281         void            (*impl_save)            (RhythmDB *db);
 282
 283         void            (*impl_entry_new)       (RhythmDB *db, RhythmDBEntry *entry);
 284
 285         gboolean        (*impl_entry_set)       (RhythmDB *db, RhythmDBEntry *entry,
 286                                          guint propid, const GValue *value);
 287
 288         void            (*impl_entry_get)       (RhythmDB *db, RhythmDBEntry *entry,
 289                                                  guint propid, GValue *value);
 290
 291         void            (*impl_entry_delete)    (RhythmDB *db, RhythmDBEntry *entry);
 292
 293         void            (*impl_entry_delete_by_type) (RhythmDB *db, RhythmDBEntryType type);
 294
 295         RhythmDBEntry * (*impl_lookup_by_location)(RhythmDB *db, RBRefString *uri);
 296
 297         gboolean        (*impl_evaluate_query)  (RhythmDB *db, GPtrArray *query, RhythmDBEntry *entry);
 298
 299         void            (*impl_entry_foreach)   (RhythmDB *db, GFunc func, gpointer data);
 300
 301         void            (*impl_do_full_query)   (RhythmDB *db, GPtrArray *query,
 302                                                  RhythmDBQueryResults *results,
 303                                                  gboolean *cancel);
 304
 305         void            (*impl_entry_type_registered) (RhythmDB *db,
 306                                                        const char *name,
 307                                                        RhythmDBEntryType type);
 308 } RhythmDBClass;
 309
 310 GType           rhythmdb_get_type       (void);
 311
 312 RhythmDB *      rhythmdb_new            (const char *name);
 313
 314 void            rhythmdb_shutdown       (RhythmDB *db);
 315
 316 void            rhythmdb_load           (RhythmDB *db);
 317
 318 void            rhythmdb_save           (RhythmDB *db);
 319 void            rhythmdb_save_async     (RhythmDB *db);
 320
 321 void            rhythmdb_start_action_thread    (RhythmDB *db);
 322
 323 void            rhythmdb_commit         (RhythmDB *db);
 324
 325 gboolean        rhythmdb_entry_is_editable (RhythmDB *db, RhythmDBEntry *entry);
 326
 327 RhythmDBEntry * rhythmdb_entry_new      (RhythmDB *db, RhythmDBEntryType type, const char *uri);
 328 RhythmDBEntry * rhythmdb_entry_example_new      (RhythmDB *db, RhythmDBEntryType type, const char *uri);
 329
 330 void            rhythmdb_add_uri        (RhythmDB *db, const char *uri);
 331 void            rhythmdb_add_uri_with_type      (RhythmDB *db, const char *uri, RhythmDBEntryType type);
 332
 333 void            rhythmdb_entry_get      (RhythmDB *db, RhythmDBEntry *entry, RhythmDBPropType propid, GValue *val);
 334 void            rhythmdb_entry_set      (RhythmDB *db, RhythmDBEntry *entry,
 335                                          guint propid, const GValue *value);
 336
 337 char *          rhythmdb_entry_get_playback_uri (RhythmDBEntry *entry);
 338
 339 gpointer        rhythmdb_entry_get_type_data (RhythmDBEntry *entry, guint expected_size);
 340 #define         RHYTHMDB_ENTRY_GET_TYPE_DATA(e,t)       ((t*)rhythmdb_entry_get_type_data((e),sizeof(t)))
 341
 342 void            rhythmdb_entry_delete   (RhythmDB *db, RhythmDBEntry *entry);
 343 void            rhythmdb_entry_delete_by_type (RhythmDB *db,
 344                                                RhythmDBEntryType type);
 345 void            rhythmdb_entry_move_to_trash (RhythmDB *db,
 346                                               RhythmDBEntry *entry);
 347
 348 RhythmDBEntry * rhythmdb_entry_lookup_by_location (RhythmDB *db, const char *uri);
 349
 350 gboolean        rhythmdb_evaluate_query         (RhythmDB *db, GPtrArray *query,
 351                                                  RhythmDBEntry *entry);
 352
 353 void            rhythmdb_entry_foreach          (RhythmDB *db,
 354                                                  GFunc func,
 355                                                  gpointer data);
 356
 357 /**
 358  * Returns a freshly allocated GtkTreeModel which represents the query.
 359  * The extended arguments alternate between RhythmDBQueryType args
 360  * and their values. Items are prioritized like algebraic expressions, and
 361  * implicitly ANDed. Here's an example:
 362  *
 363 rhythmdb_do_full_query (db,
 364                         RHYTHMDB_QUERY_PROP_EQUALS,
 365                                 RHYTHMDB_PROP_ARTIST, "Pink Floyd",
 366                 RHYTHMDB_QUERY_DISJUNCTION,
 367                         RHYTHMDB_QUERY_PROP_EQUALS,
 368                                 RHYTHMDB_PROP_GENRE, "Classical",
 369                         RHYTHMDB_QUERY_PROP_GREATER,
 370                                 RHYTHMDB_PROP_RATING, 5,
 371         RHYTHMDB_QUERY_END);
 372  * Which means: artist = Pink Floyd OR (genre = Classical AND rating >= 5)
 373  */
 374 void            rhythmdb_do_full_query                  (RhythmDB *db,
 375                                                          RhythmDBQueryResults *results,
 376                                                          ...);
 377 void            rhythmdb_do_full_query_parsed           (RhythmDB *db,
 378                                                          RhythmDBQueryResults *results,
 379                                                          GPtrArray *query);
 380
 381 void            rhythmdb_do_full_query_async            (RhythmDB *db,
 382                                                          RhythmDBQueryResults *results,
 383                                                          ...);
 384
 385 void            rhythmdb_do_full_query_async_parsed     (RhythmDB *db,
 386                                                          RhythmDBQueryResults *results,
 387                                                          GPtrArray *query);
 388
 389 GPtrArray *     rhythmdb_query_parse                    (RhythmDB *db, ...);
 390 void            rhythmdb_query_append                   (RhythmDB *db, GPtrArray *query, ...);
 391 void            rhythmdb_query_append_prop_multiple     (RhythmDB *db, GPtrArray *query, RhythmDBPropType propid, GList *items);
 392 void            rhythmdb_query_concatenate              (GPtrArray *query1, GPtrArray *query2);
 393 void            rhythmdb_query_free                     (GPtrArray *query);
 394 GPtrArray *     rhythmdb_query_copy                     (GPtrArray *array);
 395 void            rhythmdb_query_preprocess               (RhythmDB *db, GPtrArray *query);
 396
 397 void            rhythmdb_query_serialize                (RhythmDB *db, GPtrArray *query,
 398                                                          xmlNodePtr node);
 399
 400 GPtrArray *     rhythmdb_query_deserialize              (RhythmDB *db, xmlNodePtr node);
 401
 402 char *          rhythmdb_query_to_string                (RhythmDB *db, GPtrArray *query);
 403
 404 gboolean        rhythmdb_query_is_time_relative         (RhythmDB *db, GPtrArray *query);
 405
 406 const xmlChar * rhythmdb_nice_elt_name_from_propid      (RhythmDB *db, RhythmDBPropType propid);
 407 int             rhythmdb_propid_from_nice_elt_name      (RhythmDB *db, const xmlChar *name);
 408
 409 void            rhythmdb_emit_entry_added               (RhythmDB *db, RhythmDBEntry *entry);
 410 void            rhythmdb_emit_entry_deleted             (RhythmDB *db, RhythmDBEntry *entry);
 411
 412 GValue *        rhythmdb_entry_request_extra_metadata   (RhythmDB *db, RhythmDBEntry *entry, const gchar *property_name);
 413 GHashTable *    rhythmdb_entry_gather_metadata          (RhythmDB *db, RhythmDBEntry *entry);
 414 void            rhythmdb_emit_entry_extra_metadata_notify (RhythmDB *db, RhythmDBEntry *entry, const gchar *property_name, const GValue *metadata);
 415
 416 gboolean        rhythmdb_is_busy                        (RhythmDB *db);
 417 char *          rhythmdb_compute_status_normal          (gint n_songs, glong duration,
 418                                                          guint64 size,
 419                                                          const char *singular,
 420                                                          const char *plural);
 421
 422 RhythmDBEntryType rhythmdb_entry_register_type          (RhythmDB *db, const char *name);
 423 RhythmDBEntryType rhythmdb_entry_type_get_by_name       (RhythmDB *db, const char *name);
 424
 425 RhythmDBEntryType rhythmdb_entry_song_get_type          (void);
 426 RhythmDBEntryType rhythmdb_entry_podcast_post_get_type  (void);
 427 RhythmDBEntryType rhythmdb_entry_podcast_feed_get_type  (void);
 428 RhythmDBEntryType rhythmdb_entry_import_error_get_type  (void);
 429 RhythmDBEntryType rhythmdb_entry_ignore_get_type        (void);
 430
 431 GType rhythmdb_get_property_type (RhythmDB *db, guint property_id);
 432
 433 RhythmDBEntry* rhythmdb_entry_ref (RhythmDBEntry *entry);
 434 void rhythmdb_entry_unref (RhythmDBEntry *entry);
 435
 436 G_END_DECLS
 437
 438 #endif /* __RHYTHMBDB_H */