2 * Copyright (C) 2007 Andre Noll <maan@systemlinux.org>
4 * Licensed under the GPL v2. For licencing details see COPYING.
7 /** \file mood.c Paraslash's mood handling functions. */
17 * Contains statistical data of the currently admissible audio files.
19 * It is used to assign normalized score values to each admissbile audio file.
21 struct afs_statistics
{
22 /** sum of num played over all admissible files */
23 int64_t num_played_sum
;
24 /** sum of last played times over all admissible files */
25 int64_t last_played_sum
;
26 /** quadratic deviation of num played time */
27 int64_t num_played_qd
;
28 /** quadratic deviation of last played time */
29 int64_t last_played_qd
;
30 /** number of admissible files */
33 struct afs_statistics statistics
;
36 * Assign scores according to a mood_method.
38 * Each mood_method has its own mood_score_function. The first parameter passed
39 * to that function is a pointer to a row of the audio file table. It
40 * determines the audio file for which a score is to be assigned. The second
41 * argument depends on the mood method this function is used for. It usually is
42 * the argument given at the end of a mood line.
44 * Mood score functions must return values between -100 and +100 inclisively.
45 * Boolean score functions should always return either -100 or +100.
47 * \sa struct mood_method, mood_parser.
49 typedef int mood_score_function(const struct osl_row
*, void *);
52 * Preprocess a mood line.
54 * The mood_parser of a mood_method is called once at mood open time for each
55 * line of the current mood definition that contains the mood_method's name as
56 * a keyword. The line is passed to the mood_parser as the first argument. The
57 * mood_parser must determine whether the line is syntactically correct and
58 * return a positive value if so and a negative value otherwise.
60 * Some mood parsers preprocess the data given in the mood line to compute a
61 * structure which depends of the particular mood_method and which is used
62 * later in the mood_score_function of the mood_method. The mood_parser may
63 * store a pointer to its structure via the second argument.
65 * \sa mood_open(), mood_cleanup_function, mood_score_function.
67 typedef int mood_parser(const char *, void **);
70 * Deallocate resources which were allocated by the mood_parser.
72 * This optional function of a mood_method is used to free any resources
73 * allocated in mood_open() by the mood_parser. The argument passed is a
74 * pointer to the mood_method specific data structure that was returned by the
79 typedef void mood_cleanup_function(void *);
82 * Used for scoring and to determine whether a file is admissible.
85 /* The name of the method. */
87 /** Pointer to the mood parser. */
89 /** Pointer to the score function */
90 mood_score_function
*score_function
;
91 /** Optional cleanup function. */
92 mood_cleanup_function
*cleanup
;
96 * Each line of the current mood corresponds to a mood_item.
99 /** The method this line is referring to. */
100 const struct mood_method
*method
;
101 /** The data structure computed by the mood parser. */
103 /** The given score value, or zero if none was given. */
105 /** Non-zero if random scoring was requested. */
107 /** Whether the "not" keyword was given in the mood line. */
109 /** The position in the list of items. */
110 struct list_head mood_item_node
;
114 * Created from the mood definition by mood_open().
116 * When a mood is opened, each line of its definition is investigated, and a
117 * corresponding mood item is produced. Each mood line starts with \p accept,
118 * \p deny, or \p score which determins the type of the mood line. For each
119 * such type a linked list is maintained whose entries are the mood items.
121 * \sa mood_item, mood_open().
124 /** the name of this mood */
126 /** The list of mood items of type \p accept. */
127 struct list_head accept_list
;
128 /** The list of mood items of type \p deny. */
129 struct list_head deny_list
;
130 /** The list of mood items of type \p score. */
131 struct list_head score_list
;
134 static struct mood
*current_mood
;
137 * Rough approximation to sqrt.
139 * \param x Integer of which to calculate the sqrt.
141 * \return An integer res with res * res <= x.
143 static uint64_t int_sqrt(uint64_t x
)
145 uint64_t op
, res
, one
= 1;
154 if (op
>= res
+ one
) {
155 op
= op
- (res
+ one
);
161 // PARA_NOTICE_LOG("sqrt(%llu) = %llu\n", x, res);
165 static int mm_played_rarely_score_function(const struct osl_row
*row
,
166 __a_unused
void *ignored
)
168 struct afs_info afsi
;
170 int ret
= get_afsi_of_row(row
, &afsi
);
174 ret
= get_num_admissible_files(&num
);
177 if (statistics
.num_played_sum
- num
* afsi
.num_played
178 > int_sqrt(statistics
.num_played_qd
* num
))
183 static int mm_played_rarely_parser(const char *arg
, __a_unused
void **ignored
)
186 PARA_WARNING_LOG("ignored junk at eol: %s\n", arg
);
190 static int mm_name_like_score_function(const struct osl_row
*row
, void *preg
)
193 int ret
= get_audio_file_path_of_row(row
, &path
);
197 ret
= regexec((regex_t
*)preg
, path
, 42, NULL
, 0);
198 return (ret
== REG_NOMATCH
)? -100 : 100;
201 static int mm_name_like_parser(const char *arg
, void **regex
)
203 regex_t
*preg
= para_malloc(sizeof(*preg
));
204 int ret
= regcomp(preg
, arg
, REG_NOSUB
);
208 return -E_MOOD_REGEX
;
214 static void mm_name_like_cleanup(void *preg
)
220 static int mm_is_set_parser(const char *arg
, void **bitnum
)
222 unsigned char *c
= para_malloc(1);
223 int ret
= get_attribute_bitnum_by_name(arg
, c
);
232 static int mm_is_set_score_function(const struct osl_row
*row
, void *bitnum
)
234 unsigned char *bn
= bitnum
;
235 struct afs_info afsi
;
236 int ret
= get_afsi_of_row(row
, &afsi
);
240 if (afsi
.attributes
& (1ULL << *bn
))
245 /* returns 1 if row matches score item, -1 otherwise */
246 static int add_item_score(const struct osl_row
*row
, struct mood_item
*item
, long *score
,
251 *score_arg_sum
+= item
->random_score
? 100 : PARA_ABS(item
->score_arg
);
253 ret
= item
->method
->score_function(row
, item
->parser_data
);
254 if ((ret
< 0 && !item
->logical_not
) || (ret
>= 0 && item
->logical_not
))
255 return -1; /* no match */
257 if (item
->random_score
)
258 *score
+= PARA_ABS(ret
) * para_random(100);
260 *score
+= PARA_ABS(ret
) * item
->score_arg
;
264 static int compute_mood_score(const struct osl_row
*aft_row
, long *result
)
266 struct mood_item
*item
;
268 long score_arg_sum
= 0, score
= 0;
272 /* reject audio file if it matches any entry in the deny list */
273 list_for_each_entry(item
, ¤t_mood
->deny_list
, mood_item_node
)
274 if (add_item_score(aft_row
, item
, &score
, &score_arg_sum
) > 0)
275 return -E_NOT_ADMISSIBLE
;
276 list_for_each_entry(item
, ¤t_mood
->accept_list
, mood_item_node
)
277 if (add_item_score(aft_row
, item
, &score
, &score_arg_sum
) > 0)
279 /* reject if there is no matching entry in the accept list */
280 if (!match
&& !list_empty(¤t_mood
->accept_list
))
281 return -E_NOT_ADMISSIBLE
;
282 list_for_each_entry(item
, ¤t_mood
->score_list
, mood_item_node
)
283 add_item_score(aft_row
, item
, &score
, &score_arg_sum
);
285 score
/= score_arg_sum
;
290 static const struct mood_method mood_methods
[] = {
292 .parser
= mm_played_rarely_parser
,
293 .score_function
= mm_played_rarely_score_function
,
294 .name
= "played_rarely"
297 .parser
= mm_is_set_parser
,
298 .score_function
= mm_is_set_score_function
,
302 .parser
= mm_name_like_parser
,
303 .score_function
= mm_name_like_score_function
,
304 .cleanup
= mm_name_like_cleanup
,
312 static void cleanup_list_entry(struct mood_item
*item
)
314 if (item
->method
&& item
->method
->cleanup
)
315 item
->method
->cleanup(item
->parser_data
);
317 free(item
->parser_data
);
318 list_del(&item
->mood_item_node
);
322 static void destroy_mood(struct mood
*m
)
324 struct mood_item
*tmp
, *item
;
328 list_for_each_entry_safe(item
, tmp
, &m
->accept_list
, mood_item_node
)
329 cleanup_list_entry(item
);
330 list_for_each_entry_safe(item
, tmp
, &m
->deny_list
, mood_item_node
)
331 cleanup_list_entry(item
);
332 list_for_each_entry_safe(item
, tmp
, &m
->score_list
, mood_item_node
)
333 cleanup_list_entry(item
);
338 static struct mood
*alloc_new_mood(const char *name
)
340 struct mood
*m
= para_calloc(sizeof(struct mood
));
341 m
->name
= para_strdup(name
);
342 INIT_LIST_HEAD(&m
->accept_list
);
343 INIT_LIST_HEAD(&m
->deny_list
);
344 INIT_LIST_HEAD(&m
->score_list
);
348 /** The different types of a mood line. */
349 enum mood_line_type
{
361 * <accept [with score <score>] | deny [with score <score>] | score <score>>
362 * [if] [not] <mood_method> [options]
363 * <score> is either an integer or "random" which assigns a random score to
367 static int parse_mood_line(char *mood_line
, void *data
)
369 struct mood
*m
= data
;
375 enum mood_line_type mlt
= ML_INVALID
;
376 struct mood_item
*mi
= NULL
;
377 char *buf
= para_strdup(mood_line
);
379 num_words
= split_args(buf
, &argv
, delim
);
381 if (!num_words
) /* empty line */
384 if (**w
== '#') /* comment */
386 if (!strcmp(*w
, "accept"))
388 else if (!strcmp(*w
, "deny"))
390 else if (!strcmp(*w
, "score"))
392 ret
= -E_MOOD_SYNTAX
;
393 if (mlt
== ML_INVALID
)
395 mi
= para_calloc(sizeof(struct mood_item
));
396 if (mlt
!= ML_SCORE
) {
397 ret
= -E_MOOD_SYNTAX
;
401 if (!strcmp(*w
, "with")) {
407 if (mlt
== ML_SCORE
|| !strcmp(*w
, "score")) {
408 ret
= -E_MOOD_SYNTAX
;
412 if (strcmp(*w
, "random")) {
413 mi
->random_score
= 0;
414 ret
= para_atol(*w
, &mi
->score_arg
);
418 mi
->random_score
= 1;
420 goto success
; /* the line "score random" is valid */
424 ret
= -E_MOOD_SYNTAX
;
428 if (!strcmp(*w
, "if")) {
429 ret
= -E_MOOD_SYNTAX
;
434 if (!strcmp(*w
, "not")) {
435 ret
= -E_MOOD_SYNTAX
;
442 for (i
= 0; mood_methods
[i
].parser
; i
++) {
443 if (strcmp(*w
, mood_methods
[i
].name
))
447 ret
= -E_MOOD_SYNTAX
;
448 if (!mood_methods
[i
].parser
)
451 ret
= mood_methods
[i
].parser(*w
, &mi
->parser_data
);
454 mi
->method
= &mood_methods
[i
];
456 if (mlt
== ML_ACCEPT
)
457 para_list_add(&mi
->mood_item_node
, &m
->accept_list
);
458 else if (mlt
== ML_DENY
)
459 para_list_add(&mi
->mood_item_node
, &m
->deny_list
);
461 para_list_add(&mi
->mood_item_node
, &m
->score_list
);
462 PARA_DEBUG_LOG("%s entry added, method: %p\n", mlt
== ML_ACCEPT
? "accept" :
463 (mlt
== ML_DENY
? "deny" : "score"), mi
->method
);
471 free(mi
->parser_data
);
477 static int load_mood(const struct osl_row
*row
)
480 struct mood
*new_mood
, *old_mood
= current_mood
;
481 struct osl_object objs
[NUM_BLOB_COLUMNS
];
483 ret
= osl_get_object(moods_table
, row
, BLOBCOL_NAME
, &objs
[BLOBCOL_NAME
]);
486 if (objs
[BLOBCOL_NAME
].size
<= 1)
488 ret
= osl_open_disk_object(moods_table
, row
, BLOBCOL_DEF
, &objs
[BLOBCOL_DEF
]);
491 new_mood
= alloc_new_mood((char*)objs
[BLOBCOL_NAME
].data
);
492 current_mood
= new_mood
;
493 ret
= for_each_line_ro(objs
[BLOBCOL_DEF
].data
, objs
[BLOBCOL_DEF
].size
,
494 parse_mood_line
, ¤t_mood
);
495 osl_close_disk_object(&objs
[BLOBCOL_DEF
]);
497 PARA_ERROR_LOG("unable to load mood %s: %d\n",
498 (char *)objs
[BLOBCOL_NAME
].data
, ret
);
499 destroy_mood(new_mood
);
500 current_mood
= old_mood
;
503 destroy_mood(old_mood
);
504 current_mood
= new_mood
;
505 PARA_INFO_LOG("loaded mood %s\n", current_mood
->name
);
509 /* returns -E_MOOD_LOADED on _success_ to terminate the loop */
510 static int mood_loop(struct osl_row
*row
, __a_unused
void *private_data
)
512 int ret
= load_mood(row
);
514 if (ret
!= -E_DUMMY_ROW
)
515 PARA_NOTICE_LOG("invalid mood (%d), trying next mood\n", ret
);
518 return -E_MOOD_LOADED
;
521 static int load_first_available_mood(void)
523 int ret
= osl_rbtree_loop(moods_table
, BLOBCOL_NAME
, NULL
,
525 if (ret
== -E_MOOD_LOADED
) /* success */
528 return ret
; /* error */
529 PARA_NOTICE_LOG("no valid mood found\n");
534 static unsigned int_log2(uint64_t x
)
546 static int64_t normalized_value(int64_t x
, int64_t n
, int64_t sum
, int64_t qd
)
550 return 100 * (n
* x
- sum
) / (int64_t)int_sqrt(n
* qd
);
553 static long compute_num_played_score(struct afs_info
*afsi
)
555 return -normalized_value(afsi
->num_played
, statistics
.num
,
556 statistics
.num_played_sum
, statistics
.num_played_qd
);
559 static long compute_last_played_score(struct afs_info
*afsi
)
561 return -normalized_value(afsi
->last_played
, statistics
.num
,
562 statistics
.last_played_sum
, statistics
.last_played_qd
);
565 static long compute_dynamic_score(const struct osl_row
*aft_row
)
567 struct afs_info afsi
;
568 int64_t score
, nscore
= 0, lscore
= 0;
571 ret
= get_afsi_of_row(aft_row
, &afsi
);
574 nscore
= compute_num_played_score(&afsi
);
575 lscore
= compute_last_played_score(&afsi
);
576 score
= nscore
+ lscore
;
580 static int add_afs_statistics(const struct osl_row
*row
)
583 struct afs_info afsi
;
586 ret
= get_afsi_of_row(row
, &afsi
);
590 x
= afsi
.last_played
;
591 s
= statistics
.last_played_sum
;
593 statistics
.last_played_qd
+= (x
- s
/ n
) * (x
- s
/ n
) * n
/ (n
+ 1);
594 statistics
.last_played_sum
+= x
;
597 s
= statistics
.num_played_sum
;
599 statistics
.num_played_qd
+= (x
- s
/ n
) * (x
- s
/ n
) * n
/ (n
+ 1);
600 statistics
.num_played_sum
+= x
;
605 static int del_afs_statistics(const struct osl_row
*row
)
607 uint64_t n
, s
, q
, a
, new_s
;
608 struct afs_info afsi
;
610 ret
= get_afsi_of_row(row
, &afsi
);
616 memset(&statistics
, 0, sizeof(statistics
));
620 s
= statistics
.last_played_sum
;
621 q
= statistics
.last_played_qd
;
622 a
= afsi
.last_played
;
624 statistics
.last_played_sum
= new_s
;
625 statistics
.last_played_qd
= q
+ s
* s
/ n
- a
* a
626 - new_s
* new_s
/ (n
- 1);
628 s
= statistics
.num_played_sum
;
629 q
= statistics
.num_played_qd
;
632 statistics
.num_played_sum
= new_s
;
633 statistics
.num_played_qd
= q
+ s
* s
/ n
- a
* a
634 - new_s
* new_s
/ (n
- 1);
641 * Structure used during mood_open().
643 * At mood open time, we look at each file in the audio file table in order to
644 * determine whether it is admissible. If a file happens to be admissible, its
645 * mood score is computed by calling each relevant mood_score_function. Next,
646 * we update the afs_statistics and add a struct admissible_file_info to a
649 * If all files have been processed that way, the final score of each
650 * admissible file is computed by adding the dynamic score (which depends on
651 * the afs_statistics) to the mood score. Finally, all audio files in the
652 * array are added to the score table and the admissible array is freed.
654 * \sa mood_method, admissible_array.
656 struct admissible_file_info
658 /** The admissible audio file. */
659 struct osl_row
*aft_row
;
664 /** The temporary array of admissible files. */
665 struct admissible_array
{
666 /** The size of the array */
668 /** Pointer to the array of admissible files. */
669 struct admissible_file_info
*array
;
673 * Add an entry to the array of admissible files.
675 * \param aft_row The audio file to be added.
676 * \param private_data Pointer to a struct admissible_file_info.
678 * \return Negative on errors, positive on success.
680 static int add_if_admissible(struct osl_row
*aft_row
, void *private_data
)
683 struct admissible_array
*aa
= private_data
;
687 ret
= compute_mood_score(aft_row
, &score
);
689 return (ret
== -E_NOT_ADMISSIBLE
)? 1 : ret
;
690 if (statistics
.num
>= aa
->size
) {
693 aa
->array
= para_realloc(aa
->array
,
694 aa
->size
* sizeof(struct admissible_file_info
));
696 aa
->array
[statistics
.num
].aft_row
= aft_row
;
697 aa
->array
[statistics
.num
].score
= score
;
698 ret
= add_afs_statistics(aft_row
);
705 * Compute the new quadratic deviation in case one element changes.
707 * \param n Number of elements.
708 * \param old_qd The quadratic deviation before the change.
709 * \param old_val The value that was repaced.
710 * \param new_val The replacement value.
711 * \param old_sum The sum of all elements before the update.
713 * \return The new quadratic deviation resulting from replacing old_val
716 * Given n real numbers a_1, ..., a_n, their sum S = a_1 + ... + a_n,
717 * their quadratic deviation
719 * q = (a_1 - S/n)^2 + ... + (a_n - S/n)^2,
721 * and a real number b, the quadratic deviation q' of a_1,...a_{n-1}, b (ie.
722 * the last number a_n was replaced by b) may be computed in O(1) time in terms
723 * of n, q, a_n, b, and S as
725 * q' = q + d * s - (2 * S + d) * d / n,
727 * where d = b - a_n, and s = b + a_n.
729 * Example: n = 3, a_1 = 3, a_2 = 5, a_3 = 7, b = 10. Then S = 15, q = 8, d = 3,
732 * q + d * s - (2 * S + d) * d / n = 8 + 51 - 33 = 26,
734 * which equals q' = (3 - 6)^2 + (5 - 6)^2 + (10 - 6)^2.
737 _static_inline_
int64_t update_quadratic_deviation(int64_t n
, int64_t old_qd
,
738 int64_t old_val
, int64_t new_val
, int64_t old_sum
)
740 int64_t delta
= new_val
- old_val
;
741 int64_t sigma
= new_val
+ old_val
;
742 return old_qd
+ delta
* sigma
- (2 * old_sum
+ delta
) * delta
/ n
;
745 static int update_afs_statistics(struct afs_info
*old_afsi
, struct afs_info
*new_afsi
)
748 int ret
= get_num_admissible_files(&n
);
754 statistics
.last_played_qd
= update_quadratic_deviation(n
,
755 statistics
.last_played_qd
, old_afsi
->last_played
,
756 new_afsi
->last_played
, statistics
.last_played_sum
);
757 statistics
.last_played_sum
+= new_afsi
->last_played
- old_afsi
->last_played
;
759 statistics
.num_played_qd
= update_quadratic_deviation(n
,
760 statistics
.num_played_qd
, old_afsi
->num_played
,
761 new_afsi
->num_played
, statistics
.num_played_sum
);
762 statistics
.num_played_sum
+= new_afsi
->num_played
- old_afsi
->num_played
;
766 static int add_to_score_table(const struct osl_row
*aft_row
, long mood_score
)
768 long score
= (compute_dynamic_score(aft_row
) + mood_score
) / 3;
769 return score_add(aft_row
, score
);
772 static int delete_from_statistics_and_score_table(const struct osl_row
*aft_row
)
774 int ret
= del_afs_statistics(aft_row
);
777 return score_delete(aft_row
);
781 * Delete one entry from the statitics and from the score table.
783 * \param aft_row The audio file which is no longer admissible.
785 * \return Positive on success, negative on errors.
787 * \sa score_delete(), mood_update_audio_file().
789 int mood_delete_audio_file(const struct osl_row
*aft_row
)
793 ret
= row_belongs_to_score_table(aft_row
);
796 if (!ret
) /* not admissible, nothing to do */
798 return delete_from_statistics_and_score_table(aft_row
);
802 * Compute the new score of an audio file.
804 * \param aft_row Determines the audio file.
805 * \param old_afsi The audio file selector info before updating.
807 * The \a old_afsi argument may be \p NULL which indicates that no changes to
808 * the audio file info were made.
810 * \return Positive on success, negative on errors.
812 int mood_update_audio_file(const struct osl_row
*aft_row
, struct afs_info
*old_afsi
)
815 int ret
, is_admissible
, was_admissible
= 0;
816 struct afs_info afsi
;
819 return 1; /* nothing to do */
820 ret
= row_belongs_to_score_table(aft_row
);
823 was_admissible
= ret
;
824 ret
= compute_mood_score(aft_row
, &score
);
825 is_admissible
= (ret
> 0);
826 if (!was_admissible
&& !is_admissible
)
828 if (was_admissible
&& !is_admissible
)
829 return delete_from_statistics_and_score_table(aft_row
);
830 if (!was_admissible
&& is_admissible
) {
831 ret
= add_afs_statistics(aft_row
);
834 return add_to_score_table(aft_row
, score
);
837 ret
= get_afsi_of_row(aft_row
, &afsi
);
841 ret
= update_afs_statistics(old_afsi
, &afsi
);
845 score
+= compute_num_played_score(&afsi
);
846 score
+= compute_last_played_score(&afsi
);
848 PARA_DEBUG_LOG("score: %li\n", score
);
849 percent
= (score
+ 100) / 3;
852 else if (percent
< 0)
854 PARA_DEBUG_LOG("re-inserting at %lu%%\n", percent
);
855 return score_update(aft_row
, percent
);
858 static void log_statistics(void)
860 unsigned n
= statistics
.num
;
863 PARA_NOTICE_LOG("no admissible files\n");
866 PARA_NOTICE_LOG("last_played mean: %lli, last_played sigma: %llu\n",
867 (long long int)(statistics
.last_played_sum
/ n
),
868 (long long unsigned)int_sqrt(statistics
.last_played_qd
/ n
));
869 PARA_NOTICE_LOG("num_played mean: %lli, num_played sigma: %llu\n",
870 (long long int)statistics
.num_played_sum
/ n
,
871 (long long unsigned)int_sqrt(statistics
.num_played_qd
/ n
));
875 * Open the given mood.
877 * \param mood_name The name of the mood to open.
879 * There are two special cases: If \a mood_name is \a NULL, load the
880 * first available mood. If \a mood_name is the empty string "", load
881 * the dummy mood that accepts every audio file and uses a scoring method
882 * based only on the \a last_played information.
884 * \return Positive on success, negative on errors. Loading the dummy mood
887 * \sa struct admissible_file_info, struct admissible_array, struct
888 * afs_info::last_played, mood_close().
890 int mood_open(char *mood_name
)
893 struct admissible_array aa
= {
899 ret
= load_first_available_mood();
902 } else if (*mood_name
) {
904 struct osl_object obj
= {
906 .size
= strlen(mood_name
) + 1
908 ret
= osl_get_row(moods_table
, BLOBCOL_NAME
, &obj
, &row
);
910 PARA_NOTICE_LOG("no such mood: %s\n", mood_name
);
913 ret
= load_mood(row
);
917 destroy_mood(current_mood
);
918 current_mood
= alloc_new_mood("dummy");
920 PARA_NOTICE_LOG("loaded mood %s\n", current_mood
->name
);
921 PARA_INFO_LOG("%s\n", "computing statistics of admissible files");
922 ret
= audio_file_loop(&aa
, add_if_admissible
);
926 PARA_NOTICE_LOG("%d admissible files \n", statistics
.num
);
927 for (i
= 0; i
< statistics
.num
; i
++) {
928 struct admissible_file_info
*a
= aa
.array
+ i
;
929 ret
= add_to_score_table(a
->aft_row
, a
->score
);
933 PARA_NOTICE_LOG("score add complete\n");
941 * Close the current mood.
943 * Free all resources of the current mood which were allocated during
946 void mood_close(void)
948 destroy_mood(current_mood
);
950 memset(&statistics
, 0, sizeof(statistics
));
954 * Close and re-open the current mood.
956 * This function is used if changes to the audio file table or the
957 * attribute table were made that render the current list of admissible
958 * files useless. For example, if an attribute is removed from the
959 * attribute table, this function is called.
961 * \return Positive on success, negative on errors. If no mood is currently
962 * open, the function returns success.
964 * \sa mood_open(), mood_close().
966 int mood_reload(void)
974 mood_name
= para_strdup(current_mood
->name
);
976 ret
= mood_open(mood_name
);