9153bf1f849246379e68b4605c749474fce2c656
6 /** \file playlist.c Functions for loading and saving playlists. */
8 /** Structure used for adding entries to a playlist. */
10 /** The name of the playlist. */
12 /** The number of entries currently in the playlist. */
15 static struct playlist_info playlist
;
18 * Re-insert an audio file into the tree of admissible files.
20 * \param aft_row Determines the audio file.
22 * \return The return value of score_update().
24 int playlist_update_audio_file(struct osl_row
*aft_row
)
26 /* always re-insert to the top of the tree */
27 return score_update(aft_row
, 0);
30 static int add_playlist_entry(char *line
, void *private_data
)
32 struct osl_row
*aft_row
;
33 struct playlist_info
*pli
= private_data
;
34 int ret
= aft_get_row_of_path(line
, &aft_row
);
37 PARA_NOTICE_LOG("path not found in audio file table: %s\n",
41 ret
= score_add(aft_row
, -pli
->length
);
43 PARA_ERROR_LOG("failed to add %s: %d\n", line
, ret
);
50 static int load_playlist(struct osl_row
*row
)
52 struct osl_object obj
;
55 ret
= osl_get_object(playlists_table
, row
, BLOBCOL_NAME
, &obj
);
58 playlist
.name
= para_strdup(obj
.data
);
60 ret
= osl_open_disk_object(playlists_table
, row
, BLOBCOL_DEF
, &obj
);
63 ret
= for_each_line_ro(obj
.data
, obj
.size
, add_playlist_entry
,
65 osl_close_disk_object(&obj
);
68 ret
= -E_PLAYLIST_EMPTY
;
71 PARA_NOTICE_LOG("loaded playlist %s (%u files)\n", playlist
.name
,
79 /* returns -E_PLAYLIST_LOADED on _success_ to terminate the loop */
80 static int playlist_loop(struct osl_row
*row
, __a_unused
void *private_data
)
82 int ret
= load_playlist(row
);
84 if (ret
!= -E_DUMMY_ROW
)
85 PARA_NOTICE_LOG("unable to load playlist, trying next\n");
88 return -E_PLAYLIST_LOADED
;
91 static int load_first_available_playlist(void)
93 int ret
= osl_rbtree_loop(playlists_table
, BLOBCOL_NAME
, NULL
,
95 if (ret
== -E_PLAYLIST_LOADED
) /* success */
98 return ret
; /* error */
99 PARA_NOTICE_LOG("no valid playlist found\n");
100 return -E_NO_PLAYLIST
;
104 * Close the current playlist.
106 * \sa playlist_open().
108 void playlist_close(void)
111 playlist
.name
= NULL
;
115 * Open the given playlist.
117 * \param name The name of the playlist to open.
119 * If name is \p NULL, load the first available playlist. Files which are
120 * listed in the playlist, but not contained in the database are ignored.
121 * This is not considered an error.
123 * \return Positive on success, negative on errors. Possible errors
124 * include: Given playlist not found, -E_NO_PLAYLIST (no playlist defined).
126 int playlist_open(char *name
)
128 struct osl_object obj
;
133 return load_first_available_playlist();
135 obj
.size
= strlen(obj
.data
);
136 ret
= osl_get_row(playlists_table
, BLOBCOL_NAME
, &obj
, &row
);
138 PARA_NOTICE_LOG("failed to load playlist %s\n", name
);
141 return load_playlist(row
);