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
, struct mood
*m
,
267 struct mood_item
*item
;
269 long score_arg_sum
= 0, score
= 0;
273 /* reject audio file if it matches any entry in the deny list */
274 list_for_each_entry(item
, &m
->deny_list
, mood_item_node
)
275 if (add_item_score(aft_row
, item
, &score
, &score_arg_sum
) > 0)
276 return -E_NOT_ADMISSIBLE
;
277 list_for_each_entry(item
, &m
->accept_list
, mood_item_node
)
278 if (add_item_score(aft_row
, item
, &score
, &score_arg_sum
) > 0)
280 /* reject if there is no matching entry in the accept list */
281 if (!match
&& !list_empty(&m
->accept_list
))
282 return -E_NOT_ADMISSIBLE
;
283 list_for_each_entry(item
, &m
->score_list
, mood_item_node
)
284 add_item_score(aft_row
, item
, &score
, &score_arg_sum
);
286 score
/= score_arg_sum
;
291 static const struct mood_method mood_methods
[] = {
293 .parser
= mm_played_rarely_parser
,
294 .score_function
= mm_played_rarely_score_function
,
295 .name
= "played_rarely"
298 .parser
= mm_is_set_parser
,
299 .score_function
= mm_is_set_score_function
,
303 .parser
= mm_name_like_parser
,
304 .score_function
= mm_name_like_score_function
,
305 .cleanup
= mm_name_like_cleanup
,
313 static void cleanup_list_entry(struct mood_item
*item
)
315 if (item
->method
&& item
->method
->cleanup
)
316 item
->method
->cleanup(item
->parser_data
);
318 free(item
->parser_data
);
319 list_del(&item
->mood_item_node
);
323 static void destroy_mood(struct mood
*m
)
325 struct mood_item
*tmp
, *item
;
329 list_for_each_entry_safe(item
, tmp
, &m
->accept_list
, mood_item_node
)
330 cleanup_list_entry(item
);
331 list_for_each_entry_safe(item
, tmp
, &m
->deny_list
, mood_item_node
)
332 cleanup_list_entry(item
);
333 list_for_each_entry_safe(item
, tmp
, &m
->score_list
, mood_item_node
)
334 cleanup_list_entry(item
);
339 static struct mood
*alloc_new_mood(const char *name
)
341 struct mood
*m
= para_calloc(sizeof(struct mood
));
342 m
->name
= para_strdup(name
);
343 INIT_LIST_HEAD(&m
->accept_list
);
344 INIT_LIST_HEAD(&m
->deny_list
);
345 INIT_LIST_HEAD(&m
->score_list
);
349 /** The different types of a mood line. */
350 enum mood_line_type
{
362 * <accept [with score <score>] | deny [with score <score>] | score <score>>
363 * [if] [not] <mood_method> [options]
364 * <score> is either an integer or "random" which assigns a random score to
368 static int parse_mood_line(char *mood_line
, void *data
)
370 struct mood
*m
= data
;
376 enum mood_line_type mlt
= ML_INVALID
;
377 struct mood_item
*mi
= NULL
;
378 char *buf
= para_strdup(mood_line
);
380 num_words
= split_args(buf
, &argv
, delim
);
382 if (!num_words
) /* empty line */
385 if (**w
== '#') /* comment */
387 if (!strcmp(*w
, "accept"))
389 else if (!strcmp(*w
, "deny"))
391 else if (!strcmp(*w
, "score"))
393 ret
= -E_MOOD_SYNTAX
;
394 if (mlt
== ML_INVALID
)
396 mi
= para_calloc(sizeof(struct mood_item
));
397 if (mlt
!= ML_SCORE
) {
398 ret
= -E_MOOD_SYNTAX
;
402 if (!strcmp(*w
, "with")) {
408 if (mlt
== ML_SCORE
|| !strcmp(*w
, "score")) {
409 ret
= -E_MOOD_SYNTAX
;
413 if (strcmp(*w
, "random")) {
414 mi
->random_score
= 0;
415 ret
= para_atol(*w
, &mi
->score_arg
);
419 mi
->random_score
= 1;
421 goto success
; /* the line "score random" is valid */
425 ret
= -E_MOOD_SYNTAX
;
429 if (!strcmp(*w
, "if")) {
430 ret
= -E_MOOD_SYNTAX
;
435 if (!strcmp(*w
, "not")) {
436 ret
= -E_MOOD_SYNTAX
;
443 for (i
= 0; mood_methods
[i
].parser
; i
++) {
444 if (strcmp(*w
, mood_methods
[i
].name
))
448 ret
= -E_MOOD_SYNTAX
;
449 if (!mood_methods
[i
].parser
)
452 ret
= mood_methods
[i
].parser(*w
, &mi
->parser_data
);
455 mi
->method
= &mood_methods
[i
];
457 if (mlt
== ML_ACCEPT
)
458 para_list_add(&mi
->mood_item_node
, &m
->accept_list
);
459 else if (mlt
== ML_DENY
)
460 para_list_add(&mi
->mood_item_node
, &m
->deny_list
);
462 para_list_add(&mi
->mood_item_node
, &m
->score_list
);
463 PARA_DEBUG_LOG("%s entry added, method: %p\n", mlt
== ML_ACCEPT
? "accept" :
464 (mlt
== ML_DENY
? "deny" : "score"), mi
->method
);
472 free(mi
->parser_data
);
478 static int load_mood(const struct osl_row
*mood_row
, struct mood
**m
)
481 struct osl_object objs
[NUM_BLOB_COLUMNS
];
483 ret
= osl_get_object(moods_table
, mood_row
, BLOBCOL_NAME
, &objs
[BLOBCOL_NAME
]);
486 if (objs
[BLOBCOL_NAME
].size
<= 1)
488 ret
= osl_open_disk_object(moods_table
, mood_row
, BLOBCOL_DEF
, &objs
[BLOBCOL_DEF
]);
491 *m
= alloc_new_mood((char*)objs
[BLOBCOL_NAME
].data
);
492 ret
= for_each_line_ro(objs
[BLOBCOL_DEF
].data
, objs
[BLOBCOL_DEF
].size
,
493 parse_mood_line
, *m
);
494 osl_close_disk_object(&objs
[BLOBCOL_DEF
]);
496 PARA_ERROR_LOG("unable to load mood %s: %s\n", (*m
)->name
,
497 PARA_STRERROR(-ret
));
501 PARA_INFO_LOG("loaded mood %s\n", (*m
)->name
);
505 /* returns -E_MOOD_LOADED on _success_ to terminate the loop */
506 static int mood_loop(struct osl_row
*mood_row
, void *data
)
508 struct mood
**m
= data
;
509 int ret
= load_mood(mood_row
, m
);
511 if (ret
!= -E_DUMMY_ROW
)
512 PARA_NOTICE_LOG("invalid mood (%d), trying next mood\n", ret
);
515 return -E_MOOD_LOADED
;
518 static int load_first_available_mood(struct mood
**m
)
520 int ret
= osl_rbtree_loop(moods_table
, BLOBCOL_NAME
, m
,
522 if (ret
== -E_MOOD_LOADED
) /* success */
525 return ret
; /* error */
526 PARA_NOTICE_LOG("no valid mood found\n");
531 static unsigned int_log2(uint64_t x
)
543 static int64_t normalized_value(int64_t x
, int64_t n
, int64_t sum
, int64_t qd
)
547 return 100 * (n
* x
- sum
) / (int64_t)int_sqrt(n
* qd
);
550 static long compute_num_played_score(struct afs_info
*afsi
)
552 return -normalized_value(afsi
->num_played
, statistics
.num
,
553 statistics
.num_played_sum
, statistics
.num_played_qd
);
556 static long compute_last_played_score(struct afs_info
*afsi
)
558 return -normalized_value(afsi
->last_played
, statistics
.num
,
559 statistics
.last_played_sum
, statistics
.last_played_qd
);
562 static long compute_dynamic_score(const struct osl_row
*aft_row
)
564 struct afs_info afsi
;
565 int64_t score
, nscore
= 0, lscore
= 0;
568 ret
= get_afsi_of_row(aft_row
, &afsi
);
571 nscore
= compute_num_played_score(&afsi
);
572 lscore
= compute_last_played_score(&afsi
);
573 score
= nscore
+ lscore
;
577 static int add_afs_statistics(const struct osl_row
*row
)
580 struct afs_info afsi
;
583 ret
= get_afsi_of_row(row
, &afsi
);
587 x
= afsi
.last_played
;
588 s
= statistics
.last_played_sum
;
590 statistics
.last_played_qd
+= (x
- s
/ n
) * (x
- s
/ n
) * n
/ (n
+ 1);
591 statistics
.last_played_sum
+= x
;
594 s
= statistics
.num_played_sum
;
596 statistics
.num_played_qd
+= (x
- s
/ n
) * (x
- s
/ n
) * n
/ (n
+ 1);
597 statistics
.num_played_sum
+= x
;
602 static int del_afs_statistics(const struct osl_row
*row
)
604 uint64_t n
, s
, q
, a
, new_s
;
605 struct afs_info afsi
;
607 ret
= get_afsi_of_row(row
, &afsi
);
613 memset(&statistics
, 0, sizeof(statistics
));
617 s
= statistics
.last_played_sum
;
618 q
= statistics
.last_played_qd
;
619 a
= afsi
.last_played
;
621 statistics
.last_played_sum
= new_s
;
622 statistics
.last_played_qd
= q
+ s
* s
/ n
- a
* a
623 - new_s
* new_s
/ (n
- 1);
625 s
= statistics
.num_played_sum
;
626 q
= statistics
.num_played_qd
;
629 statistics
.num_played_sum
= new_s
;
630 statistics
.num_played_qd
= q
+ s
* s
/ n
- a
* a
631 - new_s
* new_s
/ (n
- 1);
638 * Structure used during mood_open().
640 * At mood open time, we look at each file in the audio file table in order to
641 * determine whether it is admissible. If a file happens to be admissible, its
642 * mood score is computed by calling each relevant mood_score_function. Next,
643 * we update the afs_statistics and add a struct admissible_file_info to a
646 * If all files have been processed that way, the final score of each
647 * admissible file is computed by adding the dynamic score (which depends on
648 * the afs_statistics) to the mood score. Finally, all audio files in the
649 * array are added to the score table and the admissible array is freed.
651 * \sa mood_method, admissible_array.
653 struct admissible_file_info
655 /** The admissible audio file. */
656 struct osl_row
*aft_row
;
661 /** The temporary array of admissible files. */
662 struct admissible_array
{
663 /** Files are admissible wrt. this mood. */
665 /** The size of the array */
667 /** Pointer to the array of admissible files. */
668 struct admissible_file_info
*array
;
672 * Add an entry to the array of admissible files.
674 * \param aft_row The audio file to be added.
675 * \param private_data Pointer to a struct admissible_file_info.
677 * \return Negative on errors, positive on success.
679 static int add_if_admissible(struct osl_row
*aft_row
, void *data
)
681 struct admissible_array
*aa
= data
;
685 ret
= compute_mood_score(aft_row
, aa
->m
, &score
);
687 return (ret
== -E_NOT_ADMISSIBLE
)? 1 : ret
;
688 if (statistics
.num
>= aa
->size
) {
691 aa
->array
= para_realloc(aa
->array
,
692 aa
->size
* sizeof(struct admissible_file_info
));
694 aa
->array
[statistics
.num
].aft_row
= aft_row
;
695 aa
->array
[statistics
.num
].score
= score
;
696 ret
= add_afs_statistics(aft_row
);
703 * Compute the new quadratic deviation in case one element changes.
705 * \param n Number of elements.
706 * \param old_qd The quadratic deviation before the change.
707 * \param old_val The value that was repaced.
708 * \param new_val The replacement value.
709 * \param old_sum The sum of all elements before the update.
711 * \return The new quadratic deviation resulting from replacing old_val
714 * Given n real numbers a_1, ..., a_n, their sum S = a_1 + ... + a_n,
715 * their quadratic deviation
717 * q = (a_1 - S/n)^2 + ... + (a_n - S/n)^2,
719 * and a real number b, the quadratic deviation q' of a_1,...a_{n-1}, b (ie.
720 * the last number a_n was replaced by b) may be computed in O(1) time in terms
721 * of n, q, a_n, b, and S as
723 * q' = q + d * s - (2 * S + d) * d / n,
725 * where d = b - a_n, and s = b + a_n.
727 * Example: n = 3, a_1 = 3, a_2 = 5, a_3 = 7, b = 10. Then S = 15, q = 8, d = 3,
730 * q + d * s - (2 * S + d) * d / n = 8 + 51 - 33 = 26,
732 * which equals q' = (3 - 6)^2 + (5 - 6)^2 + (10 - 6)^2.
735 _static_inline_
int64_t update_quadratic_deviation(int64_t n
, int64_t old_qd
,
736 int64_t old_val
, int64_t new_val
, int64_t old_sum
)
738 int64_t delta
= new_val
- old_val
;
739 int64_t sigma
= new_val
+ old_val
;
740 return old_qd
+ delta
* sigma
- (2 * old_sum
+ delta
) * delta
/ n
;
743 static int update_afs_statistics(struct afs_info
*old_afsi
, struct afs_info
*new_afsi
)
746 int ret
= get_num_admissible_files(&n
);
752 statistics
.last_played_qd
= update_quadratic_deviation(n
,
753 statistics
.last_played_qd
, old_afsi
->last_played
,
754 new_afsi
->last_played
, statistics
.last_played_sum
);
755 statistics
.last_played_sum
+= new_afsi
->last_played
- old_afsi
->last_played
;
757 statistics
.num_played_qd
= update_quadratic_deviation(n
,
758 statistics
.num_played_qd
, old_afsi
->num_played
,
759 new_afsi
->num_played
, statistics
.num_played_sum
);
760 statistics
.num_played_sum
+= new_afsi
->num_played
- old_afsi
->num_played
;
764 static int add_to_score_table(const struct osl_row
*aft_row
, long mood_score
)
766 long score
= (compute_dynamic_score(aft_row
) + mood_score
) / 3;
767 return score_add(aft_row
, score
);
770 static int delete_from_statistics_and_score_table(const struct osl_row
*aft_row
)
772 int ret
= del_afs_statistics(aft_row
);
775 return score_delete(aft_row
);
779 * Delete one entry from the statitics and from the score table.
781 * \param aft_row The audio file which is no longer admissible.
783 * \return Positive on success, negative on errors.
785 * \sa score_delete(), mood_update_audio_file().
787 int mood_delete_audio_file(const struct osl_row
*aft_row
)
791 ret
= row_belongs_to_score_table(aft_row
);
794 if (!ret
) /* not admissible, nothing to do */
796 return delete_from_statistics_and_score_table(aft_row
);
800 * Compute the new score of an audio file wrt. the current mood.
802 * \param aft_row Determines the audio file.
803 * \param old_afsi The audio file selector info before updating.
805 * The \a old_afsi argument may be \p NULL which indicates that no changes to
806 * the audio file info were made.
808 * \return Positive on success, negative on errors.
810 int mood_update_audio_file(const struct osl_row
*aft_row
, struct afs_info
*old_afsi
)
813 int ret
, is_admissible
, was_admissible
= 0;
814 struct afs_info afsi
;
817 return 1; /* nothing to do */
818 ret
= row_belongs_to_score_table(aft_row
);
821 was_admissible
= ret
;
822 ret
= compute_mood_score(aft_row
, current_mood
, &score
);
823 is_admissible
= (ret
> 0);
824 if (!was_admissible
&& !is_admissible
)
826 if (was_admissible
&& !is_admissible
)
827 return delete_from_statistics_and_score_table(aft_row
);
828 if (!was_admissible
&& is_admissible
) {
829 ret
= add_afs_statistics(aft_row
);
832 return add_to_score_table(aft_row
, score
);
835 ret
= get_afsi_of_row(aft_row
, &afsi
);
839 ret
= update_afs_statistics(old_afsi
, &afsi
);
843 score
+= compute_num_played_score(&afsi
);
844 score
+= compute_last_played_score(&afsi
);
846 PARA_DEBUG_LOG("score: %li\n", score
);
847 percent
= (score
+ 100) / 3;
850 else if (percent
< 0)
852 PARA_DEBUG_LOG("re-inserting at %lu%%\n", percent
);
853 return score_update(aft_row
, percent
);
856 static void log_statistics(void)
858 unsigned n
= statistics
.num
;
861 PARA_NOTICE_LOG("no admissible files\n");
864 PARA_NOTICE_LOG("last_played mean: %lli, last_played sigma: %llu\n",
865 (long long int)(statistics
.last_played_sum
/ n
),
866 (long long unsigned)int_sqrt(statistics
.last_played_qd
/ n
));
867 PARA_NOTICE_LOG("num_played mean: %lli, num_played sigma: %llu\n",
868 (long long int)statistics
.num_played_sum
/ n
,
869 (long long unsigned)int_sqrt(statistics
.num_played_qd
/ n
));
873 * Change the current mood.
875 * \param mood_name The name of the mood to open.
877 * There are two special cases: If \a mood_name is \a NULL, load the
878 * first available mood. If \a mood_name is the empty string "", load
879 * the dummy mood that accepts every audio file and uses a scoring method
880 * based only on the \a last_played information.
882 * If there is already an open mood, it will be closed first.
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 change_current_mood(char *mood_name
)
893 struct admissible_array aa
= {
900 ret
= load_first_available_mood(&m
);
903 destroy_mood(current_mood
);
905 } else if (*mood_name
) {
908 struct osl_object obj
= {
910 .size
= strlen(mood_name
) + 1
912 ret
= osl_get_row(moods_table
, BLOBCOL_NAME
, &obj
, &row
);
914 PARA_NOTICE_LOG("no such mood: %s\n", mood_name
);
917 ret
= load_mood(row
, &m
);
920 destroy_mood(current_mood
);
923 destroy_mood(current_mood
);
924 current_mood
= alloc_new_mood("dummy");
927 PARA_NOTICE_LOG("loaded mood %s\n", current_mood
->name
);
928 PARA_INFO_LOG("%s\n", "computing statistics of admissible files");
929 ret
= audio_file_loop(&aa
, add_if_admissible
);
933 PARA_NOTICE_LOG("%d admissible files \n", statistics
.num
);
934 for (i
= 0; i
< statistics
.num
; i
++) {
935 struct admissible_file_info
*a
= aa
.array
+ i
;
936 ret
= add_to_score_table(a
->aft_row
, a
->score
);
940 PARA_NOTICE_LOG("score add complete\n");
948 * Close the current mood.
950 * Free all resources of the current mood which were allocated during
953 void close_current_mood(void)
955 destroy_mood(current_mood
);
957 memset(&statistics
, 0, sizeof(statistics
));
961 * Close and re-open the current mood.
963 * This function is used if changes to the audio file table or the
964 * attribute table were made that render the current list of admissible
965 * files useless. For example, if an attribute is removed from the
966 * attribute table, this function is called.
968 * \return Positive on success, negative on errors. If no mood is currently
969 * open, the function returns success.
971 * \sa mood_open(), mood_close().
973 int reload_current_mood(void)
981 mood_name
= para_strdup(current_mood
->name
);
982 close_current_mood();
983 ret
= change_current_mood(mood_name
);